Hand-off Control

Hand-off Control patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

01/31/08 - 20080025262 - Method for performing handoff from wibro(wimax) service to wireless lan service and terminal apparatus using the same title
Embodiments of systems (e.g., the terminal apparatus) and methods according to the application can perform a handoff from a WiBro (wireless broadband) service to a wireless LAN service or from a WIMAX (worldwide interoperability for microwave access) service to a wireless LAN service. One embodiment can perform a communication according ...

01/31/08 - 20080025261 - Distributed policy services for mobile and nomadic networking
A method of disseminating topology information related to a subscriber in a system having one or more networks, each network having access devices and policy functions, includes identifying a current location of the subscriber by a serving policy function. The method further includes forwarding information relating to the current location ...

01/31/08 - 20080025260 - Mobile station device for multicarrier transmission, base station device, and cell search method
A mobile station device which can correctly search for another cell quickly in a communication system using the OFCDM method. A blank subcarrier correlation calculating section (502) calculates the correlation between the blank subcarriers of the CPICH symbols adjacent to the cell signal of this mobile station device. A correlation-between-adjacent-symbols ...

01/24/08 - 20080019319 - Method and apparatus for performing ip configuration after handoff in wlan
Techniques for performing IP configuration after handoff in a WLAN are described. A station associates with a first access point in the WLAN and performs IP configuration to obtain a first set of IP configuration parameters. The station thereafter exchanges data via the first access point using the first set ...

01/24/08 - 20080019318 - Cryptographic optimisation for duplicate address detection
Cryptographic Optimisation for Duplicate Address Detection Cryptographic Optimisation for Duplicate Address Detection is achieved by providing access routers with the cryptographic key and auxiliary parameters such that the access routers can generate CGA addresses on behalf of the MN and return these CGA addresses to the MN. ...

01/17/08 - 20080013493 - Mobility signaling using direct or indirect signaling based on cell residency heuristics
A mobility signaling method and apparatus are disclosed. Mobility signaling is performed by, first, generating a mobility signaling message (300, 302) at a mobile node (100) to be sent to a correspondent node (112). Next, either direct signaling or indirect signaling is selected as a signaling mechanism for the mobility ...

01/17/08 - 20080013492 - Apparatus and method for managing dormant state in a wireless packet data system
A wireless packet data system efficiently manages a location of a packet call in a radio environment. A mobile station transmits a location registration message to a target BSC when moving to the target BSC adjacent to a source BSC. Upon receipt of the location registration message, the target BSC ...

01/17/08 - 20080013491 - Communication system providing handoff of a node to a new controller with the handoff including a clock signal synchronizing a slot of time in a frame to enable the node to communicate
A network communication system is provided for communication between network nodes, including individual nodes and a communication controller. In the network, signals are transmitted from the communication controller to identify a slot of a frame in which individual nodes may transmit a request to transmit data. When a first individual ...

01/10/08 - 20080008132 - Mobile communication apparatus and channel switching method for ad-hoc communication
A communication apparatus and method for channel switching for ad-hoc communication provides effective utilization of an infrastructure communication channel while preventing a deterioration in the quality of the infrastructure communication affected by a transmission signal used in the ad-hoc communication. Typically, the number of channels that can be used for ...

01/10/08 - 20080008131 - Efficient media independent handover protocol operation enhancements
The present invention modifies existing media independent handover (MIH) function (MIHF) frame format as defined by the IEEE 802.21 standard. In one embodiment, the variable load of the MIHF frame is modified to eliminate the MIHF variable header by defining the MIHF identification (ID) field and the session ID field ...

01/10/08 - 20080008130 - Mobile station device and communication partner selection method
It is possible to surely improve the throughput in a handover area in the MIMO communication and increase the cell coverage. Channel estimation units (104-1, 104-2) perform a channel estimation by using a common pilot signal transmitted from each base station device and acquire a channel matrix for each cell. ...

12/27/07 - 20070297370 - Real-time and non-real-time traffic handoff method and agent apparatus
In accordance with a handoff method, when a handoff of mobile terminal equipment from a previous foreign agent to a new foreign agent is detected, the mobile terminal equipment is doubly registered with either a home agent or a gateway foreign agent so that the mobile terminal equipment is associated ...

12/27/07 - 20070297367 - Method and apparatus for security protection of an original user identity in an initial signaling message
A wireless transmit/receive unit (WTRU) includes a control plane (C-plane) packet data convergence protocol (C-PDCP) layer which performs ciphering of a signaling message. The C-PDCP layer is activated upon power up of the WTRU and initial security parameters are loaded to the C-PDCP layer. An initial connection signaling message and ...

12/27/07 - 20070297364 - Fast handover in mobile communications networks
A method is described for routing of data in hierarchical mobility management systems with tiered mobile anchor points. Routing of data is switched from old to new communications nodes and regulated, by a controlling mobile anchor point having both communications nodes in its domain, to occur synchronously with the expiry ...

12/20/07 - 20070291698 - Performing association during handover in wireless access system
A method of associating a mobile station to a base station in a wireless communication system comprises transmitting to a serving base station a scanning request message comprising an association indicator. The method also comprises receiving from the serving base station a scanning response message comprising a rendezvous time associated ...

12/20/07 - 20070291697 - Method for replacing mobile router in mobile internet service system having multiple mobile routers
Provided is a method for replacing a function of mobile router for a mobile Internet service in a multiple mobile router and multiple prefix structure. The method includes the steps of: at a second mobile router, detecting a malfunction of a first mobile router using a router notifying interval of ...

12/20/07 - 20070291696 - Method and apparatus for performing random access in a wireless communication system
A method and apparatus for random access in an evolved universal terrestrial radio access (E-UTRA) system are disclosed. For code division multiplexing (CDM), a basic preamble is generated using a constant amplitude zero auto-correlation (CAZAC) sequence. The basic preamble is repeated for M time for generating a random access channel ...

12/20/07 - 20070291695 - Method and apparatus for facilitating lossless handover in 3gpp long term evolution systems
The present invention is related to a method and apparatus for facilitating lossless handover in a wireless communication system comprising at least one wireless transmit/receive unit (WTRU), a source evolved Node B (eNB), a target eNB, and a mobility management entity/user plane entity (MME/UPE) where the WTRU is in wireless ...

12/20/07 - 20070291694 - Seamless multimedia session handoff across multiple devices in a mobile networking environment
There is provided, in a source device, a method for handing off a media session from the source device to a target device in a network. The target device is informed of an impending handoff of the media session. Session state information is transmitted to the target device in preparation ...

12/13/07 - 20070286127 - Base station, mobile station and mobile communication method
A WiMAX compatible base station (BS) includes: an allocator unit (10B, 10C) configured to allocate allocation information of the downlink burst (DL-MAP) as transmission information in a first region (MAP region), and to allocate the downlink burst as transmission information in the second region (downlink burst region); and a transmitter ...

12/13/07 - 20070286125 - Method and system for transmitting data in mobile communications system
A new data transmission method and system that can enhance the speed of data transfer between base stations are provided. Unsent data stored at a base station is transmitted through a plurality of routes. The base station stores unsent packets destined for a mobile station or a gateway. The base ...

12/06/07 - 20070280170 - Base station and interference reduction method in base station
A base station communicates with mobile terminals existing within a subordinate cell, and in addition executes control to reduce interference from mobile terminals existing within adjacent cells. The base station measures the total interference power received from mobile terminals in all adjacent cells, and if the total interference power is ...

12/06/07 - 20070280169 - Facilitating 802.11 roaming by pre-establishing session keys
A method and system for pre-authenticating a pre-establishing key management on a roaming device prior to re-association to facilitate fast hand-off in a wireless network is described. For enhanced mobility, both authentication and key establishment is performed prior to re-association of the roaming device between access points. When the roaming ...

12/06/07 - 20070280167 - Methods, apparatus and computer program products for beacon generation and processing in an ofdm communications system
An enhanced-range beacon signal transmitted from a wireless terminal in a frequency band used by the wireless OFDM communications system for OFDM communications. The beacon may be received at each of a plurality of base stations of the wireless OFDM communications system. A location of the wireless terminal may be ...

12/06/07 - 20070280166 - Apparatus and method for allocating resources in an orthogonal frequency division multiple access mobile communication system
A method for receiving resources allocated from a base station by a terminal in an OFDMA mobile communication system. The method includes receiving, for a data channel, a number of first components, which indicates an amount of resources used with a first resource allocation scheme, and a number of second ...

12/06/07 - 20070280164 - Base station and mobile communication method
A base station capable of maintaining a signal quality and appropriately controlling a transmission power, taking into account the radio propagation characteristics of some different frequency bands, thereby drawing the best out of the system performance. In this base station (120), a mobile speed determining circuit (125) determines the mobile ...

12/06/07 - 20070280163 - Directional transmission and reception in a mobile wireless ad hoc network
Directional transmission and reception in mobile wireless ad hoc networks may include a number of nodes, in which there is at least a first node and a second node. Each node is associated with a time multiplex frame structure having multiple sub-frames. The sub-frames includes at least a first sub-frame, ...

12/06/07 - 20070280160 - Multi-mode multi-band mobile communication terminal and mode switching method thereof
Disclosed is a multi-mode multi-band mobile communication terminal and a mode switching method thereof wherein a mode switching can be performed between an asynchronous network and a synchronous network by minimizing interruption in communication. According to the switching method of a multi-mode multi-band mobile communication terminal, the power of a ...

11/29/07 - 20070274263 - Slot allocation method for use in cellular radio communication system and base station for use in the same system
In the base station for use in a cellular radio communication system, cell-reuse factors are set in a mixed manner. The base station has a use permission slot information storing unit which stores use permission slot information about slots whose use is permitted to the base station, and a slot ...

11/22/07 - 20070268865 - Communications system, mobile node apparatus, and method of performing a handover
A communications system comprises a first network node (102) and a second network node (110). A mobile node (108) attached to the first network node (102) hands over from communicating with the first network node (102) at a link layer (208) of a protocol stack to communicating with the second ...

11/15/07 - 20070263568 - Method and apparatus for transmitting/receiving packet in mobile communication system
Disclosed is a method and apparatus for transmitting/receiving a packet in a mobile communication system. When upper layer packets are multiplexed into a packet whose overall size is informed via a separate path, the size of the upper layer packet is not signaled if it can be calculated from the ...

11/08/07 - 20070258409 - Methods of filtering and determining cofidence factors for reference points for use in triangulation systems based on wi-fi access points
Methods and systems for classifying WLAN access points according to the quality of estimation of characteristics of the WLAN access points are provided. The classifications may be used to scale a reference database and quantify an expected error of estimation of the characteristics of the access points. WLAN access points ...

11/08/07 - 20070258408 - Estimation of speed and direction of travel in a wlan positioning system using multiple position estimations
A method for estimating the speed and bearing of a Wi-Fi enabled device using WLAN radio signals in a WLAN based location service is provided. A method used to estimate a speed of travel of a Wi-Fi enabled device comprises the Wi-Fi enabled device receiving signals transmitted by Wi-Fi access ...

11/08/07 - 20070258407 - Handover optimization in a wireless network
Various embodiments are disclosed relating to the optimization of handovers and ranging in a wireless network. According to an example embodiment, an information request may be received, which may include a handover information request, such as a ranging request for handover. Resources for handover information requests may be allocated or ...

11/08/07 - 20070258406 - Method for handover in a wireless communication network
A method for carrying out a handover of servicing a mobile terminal from a currently serving base station to another base station in a cellular network, comprising the following steps. The currently serving base transmits information associated with the mobile terminal to one or more of its neighboring base stations. ...

11/08/07 - 20070258405 - Method for handover between asynchronous communication network and synchronous communication network
A handover method for a mobile communication terminal is disclosed. In the handover method, a radio network controller periodically measures the wireless environment of a mobile communication terminal, determines whether handover is required, and informs the asynchronous mobile switching center of the asynchronous communication system that the handover is required. ...

11/01/07 - 20070253371 - System and method for traffic localization
Systems and methods for bridging packet flows to bypass call legs and/or tunnels are provided. A tunnel initiator, which can be an access gateway, a foreign agent, and a mobility anchor point, for example, provides a bypass for certain packets that have a destination serviced by the same tunnel initiator. ...

11/01/07 - 20070253369 - Coordinating a transition of a roaming client between wireless access points using another client in physical proximity
Systems and methods for handling a transition of a roaming mobile user device (i.e., a roaming client) from one access point (AP) to a target AP, referred to herein as soft inter-AP handoff. This technique involves a second mobile user device that is already connected with the target AP, called ...

10/25/07 - 20070248056 - Application managed transition of ip connections
The present invention accomplishes smooth transition when the IP address in a mobile terminal changes. This Application Managed Transition of IP Connections solution maintains a stable session between a mobile terminal and a peer computing device before, during and after the mobile terminal roams from the coverage area of a ...

10/25/07 - 20070248053 - Method and arrangement for controlling cell change and a terminal of a cellular system
The invention relates to an improved method and arrangement for controlling a cell change performed by a terminal of a cellular radio system. In particular the invention relates to a cell change in a situation where the terminal is connected to a special service provided by its current cell, e.g. ...

10/25/07 - 20070248052 - Method to control the effects of out-of-cell interference in a wireless cellular system using backhaul transmission of decoded data and formats
Successfully decoded data received from a mobile terminal as well as the transmission format of that data is relayed over the backhaul from a base station receiver that successfully decoded the mobile terminal's transmission to the base stations in the mobile terminal's active set that presumably were unable to decode ...

10/25/07 - 20070248051 - Method to control the effects of out-of-cell interference in a wireless cellular system using over-the-air feedback control
A mobile terminal is controlled via over-the-air feedback so as to enable its data transmissions to be independently and successfully decoded at each of the base stations in its active set absent a transmit power limitation or data retransmission limit. Using the decoded data, the channel is re-estimated and the ...

10/25/07 - 20070248050 - Method and system for propagating mutual authentication data in wireless communication networks
A method and system for propagating mutual authentication data in both a first wireless communication network and a second wireless communication network is useful for unifying wireless communication networks. The method includes mutually authenticating a first node operating in the first network and a second node operating in the second ...

10/25/07 - 20070248049 - Packet loss prevention during handoff using packet copy-and-forward
The present invention relates to the handing off without packet loss, from a mobile device traveling from a current point of attachment to a new point of attachment, by providing a copy and forward module in association with the current point of attachment. The copy and forward module copies and ...

10/18/07 - 20070242638 - Fast network attachment
A method of facilitating Internet Protocol access by a mobile node to an access Network, the method comprising: sending an attachment request from the mobile node to an access router of the access network, the request containing a mobile node identifier and an Interface Identifier or means for deriving an ...

10/11/07 - 20070237113 - Method and apparatus for fast cell search
The GCL sequence index of each cell/sector is assigned so that a difference of the indices between adjacent cells/sectors is more than N, where N≧1. During GCL index detection, the adjacent N−1 indices of an index with the largest magnitude can be deleted from handoff candidate cell indices. ...

10/04/07 - 20070230401 - Device, system and method of layer 2 handover between hetreogenous networks
Embodiments of the present invention provide devices, systems and methods of seamless layer 2 handover between heterogeneous networks for a hybrid wireless communication device. For example, an apparatus includes a first wireless transceiver able to operate in accordance with a first wireless communication protocol, a second, collocated, wireless transceiver able ...

10/04/07 - 20070230400 - Method for data transfer with a mobile station while in discontinuous reception state
A method for sleep mode during an impending handover is disclosed. The method comprises receiving (104) from a network a handover threshold value. Then once in sleep mode, monitoring (128) a channel condition of a handover candidate cell and determining that the handover threshold value of the handover candidate cell ...

10/04/07 - 20070230399 - Predicting movement of a mobile node from a current access location to next access locations
Facilitating mobile node mobility includes facilitating at a current access location a communication session for a mobile node. Context information for the communication session is managed, where the context information comprises information for supporting the communication session. A predictive set comprising one or more predicted next access locations is established ...

09/27/07 - 20070223420 - Communication handover method, communication message processing method and program for executing these methods by use of a computer
Disclosed is a technique so arranged that, after handover, a mobile terminal can promptly and continuously accept an additional service (for example, QoS assurance), the mobile terminal has accepted before the handover. With this technique, when the mobile terminal (MN 10) carries out the handover, the MN selects, as a ...

09/20/07 - 20070217366 - Method and apparatus for providing a communication unit with a handoff between networks
A communication unit (10) includes a mobility agent (225) for providing handoffs between a cellular network and a wireless local area network (11). The communication unit (10) determines if it should switch between the wireless local area network (11) and the cellular network for obtaining service, requests a handoff to ...

09/20/07 - 20070217365 - Method and apparatus for channel optimization during point-to-point protocol (ppp) session requests
A method and apparatus for requesting PPP instances from a packet data services network includes a mobile station configured to send an origination message to a packet data service node (PDSN) at which it has arrived upon leaving the vicinity of another PDSN. The message informs the new PDSN of ...

09/20/07 - 20070217364 - Access network system, connection station device, radio base station device, and packet loss reducing method
The present invention discloses a technique to reduce packet loss during the handover of a mobile terminal and to eliminate wasteful consumption of band. According to this technique, a connection station 103 and a radio base station 104 where a mobile terminal 100 is connected generate a plurality of own ...

09/20/07 - 20070217363 - Communication handover method, communication message processing method, program for causing computer to execute these methods, and communication system
Disclosed is a technique which enables a mobile node to promptly and continuously get an additional service (e.g., QoS guarantee) before and after the handover. According to the technique, a mobile terminal (MN 10) determines execution of a handover between subnets based on a predetermined condition, configures an NCoA, and ...

09/06/07 - 20070206539 - System and method for handover of an access terminal in a communication network
In one embodiment according to the present disclosure, a system for implementing handover of a mobile IP session in a cellular communication network generally includes a processor and a memory for storing one or more context information rules associated with an access terminal. The processor is operable to receive a ...

09/06/07 - 20070206537 - System and method for securing mesh access points in a wireless mesh network, including rapid roaming
An authentication method in a mesh AP including using standard IEEE 802.11i mechanisms between the mesh AP and an authenticator for authenticating the mesh AP to become a child mesh AP with a secure layer-2 link to a first parent mesh AP that has a secure tunnel to a Controller, ...

09/06/07 - 20070206536 - Autoconfiguration of wireless networks
The autoconfiguration of a base station in a wireless communication network is accomplished using data received from network subscribers. This subscriber data is used to determine suitable values for base station parameters that require cooperation between or among base stations and subscribers. For example, the PN offset of this base ...

09/06/07 - 20070206535 - Mobile station and method for fast roaming with integrity protection and source authentication using a common protocol
Embodiments of a mobile station and method for fast roaming in a wireless network using a fast-roaming protocol are generally described herein. Other embodiments may be described and claimed. In some embodiments, the fast-roaming protocol has a predetermined structure including an integrity check which remains independent of the route taken ...

08/30/07 - 20070201404 - Method and system for allocating resources in a communication system
Provided are a system and a method for allocating resources in a communication system. The method includes mapping a Transmission Time Interval (TTI) class according to channel information transmitted from a mobile station and service class information of the mobile station; and allocating resources by dynamically configuring a frame based ...

08/30/07 - 20070201403 - Apparatus, system and method for transferring an active call between wireless communication networks
An active voice call with an access terminal is transferred from an originating wireless network to a destination wireless network in response to a call continuation message transmitted by the access terminal to a destination network switch of the destination wireless network. The call continuation message includes a connected number ...

08/23/07 - 20070195733 - Handover method for minimizing packet call reconnection delay time between different mobile communication schemes and multi-mode terminal for the same
Provided is a function of minimizing a delay time of a packet call disconnect due to a handover between communication networks providing a communication service using different mobile communication technologies. To do this, even though a handover situation is generated during a packet service, the packet service is continuously provided ...

08/23/07 - 20070195732 - Method for releasing allocated resources at sip handover
When mobile communication is handed over from a first link to a second like, in order to relinquish resources as soon as possible, the release of resources allocated to the first link is initiated in response to the generation of the ACK signal by the mobile node, rather than waiting ...

08/16/07 - 20070189223 - Hsdpa cqi, ack, nack power offset known in node b and srnc
High speed data packet access (HSDPA) is facilitated by ensuring that power offsets are delivered to the base station (Node B) so that the new functions envisioned therefor having to do with scheduling and retransmission handling can be carried out effectively. A signal primitive having one or more information elements ...

08/16/07 - 20070189222 - Station mobility between access points
Various embodiments are discussed for approaches to transparent mobility, which attempts to permit a wireless station to be handed off between wireless access points without packet loss, without noticeable delay to the station user, and/or without loss of session continuity. ...

08/16/07 - 20070189221 - Handover control apparatus, base station, edge router, relay router, radio terminal unit, mobile communication system, and handover control method
When a radio terminal unit 30 undergoes a handover between base stations 34, 36, a previous edge router 40 having been connected to the radio terminal unit 30, out of edge routers 40, 42 provided in respective base stations 34, 36, provides an instruction to instruct a relay router 48, ...

08/16/07 - 20070189219 - Internet protocol tunneling on a mobile network
Systems and methods are provided for sending information in a first protocol over a network that supports a second protocol. A tunnel is used to provide a roaming mobile node with IPv6 packet data over an IPv4 core network. When the mobile node is handed off while roaming, the same ...

08/16/07 - 20070189218 - Mpa with mobile ip foreign agent care-of address mode
In the preferred embodiments, a system and/or method is disclosed for performing an MPA proactive handover of a mobile node in a Mobile IP scenario which includes, employing a care-of address assigned by a previous foreign agent (pFA-CoA) as a mobile node's tunnel outer address of a forward proactive handover ...

08/16/07 - 20070189217 - Method and system for signalling the transfer of voice calls between access points in a wireless local area network
A method for signalling a transfer of a voice call communicated between a wireless device and a second device from a first access point to a second access point in a wireless network, the second device coupled to the first and second access points through a server, the method comprising: ...

08/16/07 - 20070189216 - Method for performing a network handoff in a wireless network environment
A method for performing an efficient handoff of a wireless endpoint to an access point in a wireless network environment includes measuring a number of stations utilizing the access point, selecting a broadcast count of the wireless endpoint according to the number of stations, selecting a retry count of the ...

08/16/07 - 20070189215 - Method for reducing interface load of home subscriber server
The present invention provides a method for reducing the load on Home Subscriber Server (HSS)'s interface. After receiving a request message from Serving Call Session Control Function (S-CSCF) comprising the request for storing the name of the S-CSCF and for downloading the user's subscription information, HSS first stores the name ...

08/09/07 - 20070183364 - Anchoring a communication session in a multiple mode system
Anchoring a communication session for a target mobile phone includes identifying a current access node operable to provide the target mobile phone access to a first network of a first network type. Potential access nodes operable to provide a mobile phone access to a second network of a second network ...

08/09/07 - 20070183363 - Method for ipv4 mobility from ipv6 networks
A method for allowing a Mobile IPv4 Mobile Node (2) to communicate from an IPv6 visited network (5), and across IPv6 networks, back to a Mobile IPv4 Home Agent (1), in a Mobile IPv4 Network (4), comprising a Mobile Node supporting Mobile IPv4 registration procedures including IvPv6 addressing details to ...

08/02/07 - 20070177550 - Method for providing virtual private network services to mobile node in ipv6 network and gateway using the same
Provided are a method for providing virtual private network (VPN) services to a mobile node (MN) in an IPv6 network and a gateway using the same. The method includes: performing IKE (Internet key exchange) negotiation with an MN (mobile node) which has performed handover, acquiring SA (security association) and then ...

08/02/07 - 20070177549 - Systems and methods for handoff in wireless network
Methods performed by a mobile node (MN) in a secured network for handoff of communication from a serving access point (AP) to a target AP are provided. In a bounded delay channel switching (BDCS) method, the MN periodically switches between a first channel and one of multiple other channels during ...

08/02/07 - 20070177547 - Data state transition during handoff
Described herein are mechanisms and methods that facilitate seamless handoff of an access terminal between access points (transceiver modules). A first transceiver module can be providing forward link data services to an access terminal when it requests a handoff to a second transceiver module. In response, the first transceiver module ...

08/02/07 - 20070177545 - System and method for allocating sub-channels in a network
At least one operating condition is determined for a first mobile subscriber station (104) that is operating in an orthogonal frequency division multiple access (OFDMA) network. The first mobile subscriber station (104) is handed off from a base station (102) to a relay station (110). Based upon the at least ...

08/02/07 - 20070177544 - Using the repetition of an erasure indicator bit to enhance a power control command during handoff
A wireless communication network (20) includes a power control technique that includes repeating an erasure indicator bit in a transmission from a mobile station (22) to a base station (24, 30, 36). The repeated erasure indicator bit is transmitted on the uplink to each base station. The base station then ...

07/26/07 - 20070171872 - Connection initiation in wireless networks including load balancing
Disclosed embodiments include a method for establishing a wireless communication session between a base station unit and a mobile unit wherein a system controller determines which base station unit of multiple base station units is an optimal base station unit to establish the session. The method includes the system controller ...

07/26/07 - 20070171871 - Secure distributed handover signaling
Provided are apparatuses and methods for providing security measures for a handover execution procedure in a communication network. In one example, the handover procedure is initiated by more than one base station. In another example, a base station may not launch a Denial or Service (DoS) attack towards other base ...

07/26/07 - 20070171870 - Mobility architecture using pre-authentication, pre-configuration and/or virtual soft-handoff
In some illustrative embodiments, a novel system and method is provided that can, for example, extend concepts of pre-authentication (such as, e.g., IEEE 802.11i pre-authentication) so as to operate across networks or subnetworks (such as, e.g., IP subnets). In preferred embodiments, a novel architecture includes one or both of two ...

07/26/07 - 20070171869 - Wireless access networks
Changing access points for a mobile node (106) in a wireless access network (100), for example a wireless local area network (WLAN), includes the mobile node (106) communicating content data on an initial channel (214) via an initial access point (104) of the wireless access network (100); the mobile node ...

07/26/07 - 20070171868 - Method, system, terminal and computer program product for selecting radio access system in a multiaccess system
A method for selecting radio access system in a multi access system handling packet data services where a terminal can communicate with at least two different types of access systems. According to the invention the method comprises the steps of:—determining (S23) packet characteristics of each packet to be transmitted;—selecting (S31) ...

07/26/07 - 20070171867 - System and method for setting handover based on quality of service in wcdma system
The present invention relates to a method and system for performing handover based on a degree of QoS in WCDMA system. The method and system in accordance with the present invention establishes a new wireless link for use in hard handover upon determining the degree of QoS of a mobile ...

07/19/07 - 20070165573 - Mobility management with controlled use of new reject causes
Due to possibly different standard versions implemented in a mobile station (MS) and a network, the MS may not be able to interpret all reject-cause values used by the network. In this case, a MS may receive upon a mobility-management (MM) request a reject message with an unknown reject-cause value ...

07/19/07 - 20070165572 - Method and system for seamless handover of mobile devices in heterogeneous networks
The invention relates to a method for seamless handover of mobile devices in heterogeneous networks. A mobile device (10) is moved between different topological network locations (30/31/32/33) and transmits and/or receives data by means of different network access technologies without the data transfer between a Client IP application (11), running ...

07/19/07 - 20070165571 - Unauthorized wireless station detecting system, apparatus used therein, and method therefor
Wireless stations 300 and 400, being an object of administration, searches a wireless space over a plurality of frequency channels, and acquire a BSS identifier, being a specific ID, and a frame transmission source identifier from a frame propagating through a space. An operation administering apparatus 100 obtains these acquired ...

07/12/07 - 20070160009 - System and method for detecting node mobility based on network topology changes in a wireless communication network
Techniques are provided for determining mobility of a first node in an ad hoc network. A particular node generates a fixed neighbor node table comprising second nodes in the area of the particular node which are not mobile. The particular node can monitor changes between the first node and the ...

07/12/07 - 20070160008 - Method for selecting an inter-subnet idle hand-off technique
The present invention provides a method that includes accessing a first identifier associated with an idle mobile unit having a first session with a first subnet and a second identifier associated with a second subnet and determining whether the idle mobile unit has moved from the first subnet to the ...

07/12/07 - 20070160007 - Method and device for cost-function based handoff determination using wavelet prediction in vertical networks
A method for performing a network handoff between different network communication providers for a wireless endpoint includes: calculating a first cost value for a first network detected by the wireless endpoint according to a first cost function calculation, calculating a second cost value for a second network detected by the ...

07/12/07 - 20070160006 - Method and apparatus for improving wireless communication between motor vehicles
In order to provide a method of improving wireless communication between motor vehicles, wherein the motor vehicles transmit messages to a stationary unit (100), by means of which the exchange of messages is possible even between motor vehicles which are far away from one another, in the stationary unit (100) ...

07/05/07 - 20070153742 - Method, apparatus, software, and system for handover
A method is presented for handing over a mobile device from a source base station to a target base station. A plurality of service data units are segmented, in the source base station, at a medium access control layer. The segments produced by the segmentation are transmitted, after which a ...

07/05/07 - 20070153741 - Seamless roaming across wireless subnets using source address forwarding
To enable devices to detect L3 roaming users and to take appropriate forwarding actions, L3 knowledge is introduced inside a bridge in a non-intrusive way. In particular, as a client moves from a subnet associated with a first network element to a subnet associated with a second network element, a ...

07/05/07 - 20070153740 - Method and apparatus for media handover in the network
An innovative apparatus and method for media handover in the network is proposed. The apparatus comprises a communication network; a data source provider and handover devices. The handover device comprises a handover module for executing the handover execution. The handover process comprises searching for handover target devices by a searching ...

07/05/07 - 20070153739 - Wireless router assisted security handoff (wrash) in a multi-hop wireless network
A wireless router assisted security handoff method (300) includes an efficient layer 2security handoff for an infrastructure-based mobile multi-hop wireless network. The handoff is assisted with a wireless router (311) which is the first hop from the mobile station (301) to the new access point (307). The security context from ...

07/05/07 - 20070153738 - Method for switching the use of an access point (ap) within a wireless communications network
A method for switching the use of an access point (AP) in a wireless communication network without explicitly updating a proxy address resolution protocol (ARP) cache (200) includes first providing a communication between a network node (111) and a first access point (107) utilizing a first proxy ARP cache. The ...

07/05/07 - 20070153737 - Link mobility tracking and its application to mobile ad hoc networks
Embodiments of the present invention provide a method for tracking link mobility between two mobile nodes. Each node estimates a link mobility state of a link between itself and each of its neighbor nodes, accumulates successively the link mobility states, estimates link mobility parameters using the successively estimated link mobility ...

07/05/07 - 20070153736 - Wireless handoff to and from an ip network
In order to reduce the usage charges of a wireless telephone, the patent will manage and effect a handoff between a subscriber's wireless instrument and the subscriber's IP location, i.e. home, office, etc., and vice versa. The event may be automatically or manually activated without dropping the call. A gateway ...

06/28/07 - 20070147306 - Systems and methods for migratable services
A migration framework provides for the migration of services in a cluster. A migratable target contains a list of servers in the cluster capable of hosting a migratable service. A migration manager can migrate the service between servers in the migratable target, and can activate an instance of the service ...

06/28/07 - 20070147305 - Employing simulated acknowledgment signals for efficient handoffs in cellular packet networks
An improved arrangement is described for maintaining throughput of date packets over a cellular packet network from an Internet server to an end user machine during handoff of a mobile subscriber unit from a first base station to a second base station. The end user machine conventionally generates, in response ...

06/28/07 - 20070147304 - Method of reestablishing communication by a mobile node upon recovery from an abrupt shut down
When a mobile node suffers an abrupt shut down while operating in a foreign network and recovers in a new foreign network, the invention enables the mobile node to reestablish communication capability, without time delay, with the nodes that had established one or more communication sessions with the mobile node ...

06/28/07 - 20070147303 - Method and multimode terminal for minimizing mute interval
A method and a multimode terminal for minimizing a mute interval caused when call interruption occurs due to a handover between communication networks which provide communication services using different mobile communication technologies. In the method, communication network modems of the terminal supporting a multimode are interconnected through a one-to-one communication ...

06/28/07 - 20070147302 - Method for minimizing current consumption at handover in multimode terminal and terminal for use in the same
A method and a multimode terminal for minimizing current consumption and simultaneously reducing a handover processing time when a handover occurs between communication networks which provide communication services using different mobile communication technologies. The communication network modems of the multimode terminal are interconnected via a one-to-one communication path, so that ...

06/28/07 - 20070147301 - Method for acquiring handover network in multi-mode terminal and multi-mode terminal therefor
Disclosed is a method capable of minimizing a period of time required for a handover network acquisition procedure when a handover occurs between communication networks which provide communication services using different mobile communication technologies. When a modem for a handover communication network performs network acquisition due to the occurrence of ...

06/28/07 - 20070147300 - Fast handover method using candidate coas
Provided is a fast handover method using candidate care-of addresses (CoAs). The method includes obtaining Internet protocol (IP) address information of access routers located adjacent to a previous access router (PAR) to which a mobile node is connected; setting more than one candidate CoAs based on the IP address information; ...

06/28/07 - 20070147299 - Wireless transmission device
The wireless transmission device connected to any one of subnetworks configuring an IP network including a server managing IP addresses, and connecting a mobile terminal to any one of subnetworks, includes an address storage unit storing identifying information specifying the mobile terminal as a sender of a message and the ...

06/28/07 - 20070147298 - Method and apparatus for mobility management in wireless networks
This invention provides a method and apparatus that uses a mobility management server (MMS) device for supporting mobility management in wireless networks. With the MMS device for services of resource management and packet relay, this invention speeds up the handover procedure for a mobile device switching from a first network ...

06/28/07 - 20070147297 - Dynamic baseline technique for analyzing wireless networks
The technique for analyzing a live wireless network (20) includes repeatedly alternating (54, 60) between a baseline network configuration (52, 58, 64) and a trial network configuration (56, 62) a plurality of times within a twenty-four hour period. A disclosed example includes repeatedly alternating between the baseline network configuration and ...

06/28/07 - 20070147296 - Method for simulating communication networks, related simulator, communication network, and computer program product
A communication network is simulated with a simulator with object based architecture in which each object represents the model of a network device. The simulated network is capable of corresponding to a plurality of different systems, such as, GSM, GPRS, UMTS, WLAN, fixed networks. At the simulator level, the physical ...

06/21/07 - 20070140173 - Wireless communication terminal
A wireless communication terminal, comprises: a requesting section that is configured to request content of a broadcast/multicast service; a storage section that is configured to store information on the content requested by the requesting section; and a control section that, when a handoff is performed, is configured to control a ...

06/21/07 - 20070140172 - Radio network control
The radio node controller of one subnet sends a communication to an access terminal over a control channel through the infrastructure of another subnet. The radio node controller maintains an open traffic channel with an access terminal when the access terminal moves from a coverage area of the first subnet ...

06/21/07 - 20070140171 - Radio link management in distributed network architecture
In a mobile communication network, the call context for an active call is managed in a distributed manner following a cell change. When a mobile station migrates from one access node (AN) to another during the course of a call, the call state variables are transferred to the new serving ...

06/21/07 - 20070140170 - Method for faster mobility handoff of a mobile node
When a mobile node moves to a network (foreign network) other than its home network, it must register with the home network so that the home agents are able to tunnel messages to the mobile node while it is operating in the foreign network. The present invention enables the mobile ...

06/21/07 - 20070140169 - Dynamic quality of service (qos) provisioning using session initiation protocol (sip) module in wireless base stations
A method, apparatus and/or system for communicating in a wireless network may dynamically create and/or delete a medium access control (MAC) quality of service (QoS) connection in a wireless link between a base station and a mobile station. Each wireless base station in the network may include a packet classifier ...

06/14/07 - 20070133471 - System for interworking services of heterogeneous networks and method for vertical handoff
An interworking network system between heterogeneous networks and a vertical hand-off method for supporting QoS are provided. WLAN (Wireless Local Area Network) and Wibro (Wireless Broadband) have a service range overlaid with that of the CDMA (Code Division Multiple Access) 2000 that has been provided over the whole area, and ...

06/14/07 - 20070133470 - Method for recovering arq data in wireless portable internet system
In an Automatic Repeat reQuest (ARQ) method for recovering ARQ data by a target base station when handover of a mobile terminal is performed from a serving base station to the target base station in a portable Internet system is provided. First ARQ data, which includes a first service data ...

06/14/07 - 20070133469 - Sensor node device and method for supporting mobility of mobile node in sensor network
Provided are a sensor node device and method for supporting mobility of a mobile node in a sensor network. The sensor node device includes: a network interface for communicating with a sink node, at least one neighboring sensor node, and the mobile node; a mobility supervisor for detecting a location ...

06/14/07 - 20070133468 - Radio network system, communication traffic changeover method for the same system, and traffic processing apparatus, line multiplexing apparatus, and host apparatus for the same system
When a congested state is detected with respect to a traffic processor, the ATM multiplexer performs a line changeover process so that at least a part of communication traffic to be processed by the traffic processing apparatus is processed by another traffic processing apparatus. This arrangement makes it possible to ...

06/14/07 - 20070133467 - Vertical handoff method and system in wlan/3g integrated networks
An IPSec tunnel is established by assigning parameters TS and SPI being translated into TFT (PF I, PF II). A first index is assigned. A GTP tunnel is established based on TFT (PF I, PF II) and the first index. GGSN generates a table based on TFT (PF I, PF ...

06/14/07 - 20070133466 - Method and apparatus to facilitate persistence of a handed-off communication system
During a communication session (101) for a multi-network user platform (which communication session is presently occurring in a first network and is terminable by a Session Initiation Protocol server as comprises a part of that first network), one establishes (102) in the first network a Session Initiation Protocol instance as ...

06/14/07 - 20070133465 - Method and apparatus to facilitate use of a session initiation protocol instance to support on-hold session status
During (101) a communication session for a plurality of user platforms wherein at least one of the user platforms is on hold and wherein the communication session is presently occurring in a first network and is terminable by a Session Initiation Protocol server as comprises a part of that first ...

06/14/07 - 20070133464 - Method for determining a path in a local radio communication
In a case where an access point lies outside the direct radio transmission range of a first radio station of a radio communications system, and a routing runs between the first radio station and the access point that includes at least one additional radio station is known to the first ...

06/14/07 - 20070133463 - Communication handover method, communication handover program, and communication system
A technique which realizes an efficient handover by reducing loads on a mobile node and an access router and communication traffics thereof while keeping a packet loss rate in a fast handover technology is disclosed, and according to that technique, a mobile node (MN 10) has a correspondence relationship between ...

06/07/07 - 20070127416 - Method and apparatus in a cdma communication system
A novel and improved method and apparatus, in a WCDMA communication system, for informing a mobile station of a downlink data frame time offset by determining the downlink data frame time offset, and transmitting the downlink data frame time offset via an Active Set Update message transmitted from a cell ...

06/07/07 - 20070127415 - System and method for performing handovers
A handover request (408) is received. The handover request (408) is for a mobile station to move between a packet-based network (112) and a circuit-voice with packet data based network (102). The handover request (408) is processed at a network element (108) to appear as a packet handover to the ...

06/07/07 - 20070127414 - Seamless mobility in layer 2 radio access networks
Systems and techniques for routing frames in one or more radio access networks based on a physical addressing scheme involve assigning a unique identifier to a virtual local area network that includes a path connecting an access point to a radio network serving node. For each of multiple nodes in ...

06/07/07 - 20070127413 - Erased frame and idle frame suppression in a wireless communications system
A method of reducing loading on backhaul communications links in a wireless communications system suppresses a portion of the upward flow of frame information for idle and/or erased frames in certain situations, such as when multiple ones of such frames are successively encountered. A radio base station abstains from sending ...

05/31/07 - 20070121549 - Fast handover method and apparatus
A fast handover method and apparatus for a mobile node between sub-networks by using a predictive algorithm includes: identifying a sub-network which is likely to be connected to a mobile node; requesting detection of whether an address of the mobile node which is to be used in the sub-network is ...

05/24/07 - 20070115890 - Apparatus and method for transmitting/receiving a downlink signal in a communication system
In a communication system, a first Downlink (DL) signal to be commonly received by all Mobile Stations (MSs) at a Base Station (BS) is generated. A second DL signal that all the MSs do not need to commonly receive is generated. The first DL signal is applied to an interference ...

05/24/07 - 20070115889 - Method and apparatus for providing trust guarantee transmission service in digital broadcasting system
Provided is a method and apparatus for providing a trust guarantee service in a digital broadcasting system, in which trust is guaranteed to a user in providing broadcasting streaming and file download services in a Digital Video Broadcasting (DVB) system. The method for providing a trust guarantee service through a ...

05/24/07 - 20070115888 - Method for reverse data processing in a mobile communication system
A method is provided of performing reverse data processing in a mobile communication system that can prevent data error caused by lack of synchronization in data from a plurality of base stations at a time of handoff in the communication system. The method may include establishing a predetermined total receiving ...

05/24/07 - 20070115887 - Device for providing hand-off quality of service of inter-access systems and method thereof
The present invention relates to a device for providing a quality of service (QoS) of a hand-off between heterogeneous networks, and a method thereof. According to the present invention, the device includes a device for performing a QoS management function for each access system and a device for performing a ...

05/24/07 - 20070115886 - Method of verifying integrity of an access point on a wireless network
A method of verifying integrity of an access point on a wireless network comprises registering an access point with a core network, allocating a unique identifier from the network to the access point; recording data including the unique identifier together with a geographical location of the access point; requesting reports ...

05/24/07 - 20070115885 - Method and system for fast ip handoff of a mobile node
A method and system for fast IP handoff of a mobile node (MN) (102) from a first wireless network (106) to a second wireless network (108) is disclosed. The method includes releasing (402) a tunnel between a first access router (AR) (204) and a second FA (206), based on at ...

05/24/07 - 20070115884 - Method, user equipment and network for performing a handover for user equipments in peer-to-peer communication mode, to a cell whose link performance is a predefined value higher than that of the active cell
A method to be executed by a UE (user equipment) is proposed, for said UE in P2P communication mode to perform cell handover, comprising steps of: detecting downlink signals of the active cell in which said UE is camping and its adjacent cells (S205); judging whether there exists a suitable ...

05/24/07 - 20070115883 - Method for reducing hand-off latency in mobile networks
A method for use in a mobile device to expedite hand-off of mobile devices between access points first detects movement of the mobile device among the coverage ranges of the access points. A mobile device that moves from one access point to another periodically transmits information on the data link ...

05/17/07 - 20070109999 - Method and system for adaptive modification of cell boundary
A method and system for reducing interference in a cellular radio communications network. At least one parameter affecting user terminals within a cell is adjusted such that the cell boundary is modified, such that interference in the network is reduced. In alternative embodiments the at least one parameter is adjusted ...

05/17/07 - 20070109998 - Information communication program, information communication apparatus and information communication method
An information communication program, an information communication apparatus and an information communication method make it possible for a mobile node to maintain direct communication with some other terminal while it is moving from a network to another if the some other terminal is always located on a particular network. An ...

05/17/07 - 20070109997 - Access router based mobile ipv6 fast handover method
Provided is a mobile IPv6 fast handovers method, which includes the steps of: a) if a mobile node is moved in a layer 2, receiving a modified RS message from a mobile node in the access router, b) detecting movement of the mobile node in a layer 3 in the ...

05/10/07 - 20070104148 - Apparatus and method of processing handover of a mobile relay station in broadband wireless access (bwa) communication system using multihop relay scheme
An apparatus and method of processing handover of a mobile relay station (MRS) in a cellular communication system using a multihop relay scheme is provided. The handover processing method includes transmitting, by the MRS, a handover request message containing child node information to a serving BS when handover is required; ...

05/10/07 - 20070104147 - Mobile communication terminal for handover from wcdma network to cdma network and method therefor
A handover method from a WCDMA network to a CDMA network in a system comprising a mobile communication terminal, a RNC of the WCDMA network and a BSC of the CDMA network comprises: transmitting a measurement control message for commanding cell power measurement on a WCDMA cell and a beacon ...

05/10/07 - 20070104146 - Apparatus and methods for home agent resiliency for mobile ipv4
Providing resiliency for mobile terminal data sessions, wherein the data sessions rely on Internet Protocol Version 4 and wherein at least one Home Agent node maintains a mobility bindings database for all registered mobile terminals while they are away from a home network. A first aspect of the invention provides ...

05/10/07 - 20070104145 - Data accessing method for a wireless communication device performing a handover operation between wireless stations
A data accessing method for performing a handover operation between wireless communication stations is provided. In particular, the present invention provides a virtual DHCP server module that is installed in a wireless communication device and roams between a plurality of wireless stations. Wherein, a communication module, which can simultaneously record ...

05/10/07 - 20070104144 - Control of reverse link packet forwarding in a wireless communications system
An approach to controlling packet forwarding in a wireless communications system that helps limit the burden placed on internal communication links while maintaining some or all of the advantages of diversity gain on the reverse link. A primary base station sends its peers a forwarding control message if a packet ...

05/10/07 - 20070104143 - Communication handover method, communication message processing method, program for executing these methods by use of computer, and communication system
Disclosed is a technique which enables a mobile node to promptly and continuously get an additional service (e.g., QoS guarantee) gotten before handover after the handover. According to the technique, a mobile node (MN 10) has a correspondence relationship between information (link layer address of an AP) on an access ...

05/10/07 - 20070104142 - Method for modem switching for use with mm-mb terminal
A multimode-multiband terminal includes an RF antenna for transceiving a CDMA-2000 signal and/or a WCDMA signal; an RF transceiver for demodulating a WCDMA pilot signal received from the RF antenna and outputting the demodulated WCDMA pilot signal; a pilot signal measurement unit for measuring an intensity of the demodulated WCDMA ...

05/03/07 - 20070097921 - Method and apparatus for supporting fast mobility ip with link identifier prefix in wireless communication system
A method and apparatus for supporting a fast mobility Internet Protocol (IP) with a link identifier prefix (LinkID prefix) in a wireless communication system are provided. According to a method for performing a handoff from a first access router to a second access router, a Layer 2 (L2) beacon containing ...

05/03/07 - 20070097920 - Method of handoff within a telecommunications system containing digital base stations with different spectral capabilities
The present invention is directed to a digital wireless telecommunications system that includes a plurality of base station of differing spectral capabilities, and a plurality of remote stations capable of transmitting data to and receiving transmissions from the plurality of base stations. The invention herein provides a method for remote ...

05/03/07 - 20070097919 - Access point device and a communications system for effectively using a proxy arp function
In an access point device, a controller controls a wired interface communicating on wire with a network switcher accommodating access point devices and a wireless interface communicating wirelessly with a wireless terminal device located in its service area. Services are handed over between the access point devices responsively to the ...

05/03/07 - 20070097918 - Mobility enhancement for real time service over high speed downlink packet access (hsdpa)
A system and method for enhancing service over a high-speed downlink packet access (HSDPA) service in a cellular communication network includes informing a UE of the cells in an HSDPA active subset of cells. The US makes a measurement of the cells and selects a best cell for switching. The ...

05/03/07 - 20070097917 - Method for rapidly lnking mobile node and access point in wireless local area network
A method for rapidly updating network information when a mobile node (MN) moves in a wireless local area network (WLAN) is provided, wherein the MAC Table information in a wireless LAN switch can be rapidly updated or removed when hand-off has been completed for the wireless LAN switch in the ...

04/26/07 - 20070091850 - Method of performing handover in mobile ip environment
Provided is a method of performing a handover in a mobile communication environment. The method of performing the handover using a mobile node (MN) that moves from a first access router (AR) network to a second AR network in a mobile Internet protocol (IP) network includes: (a) the MN providing ...

04/26/07 - 20070091849 - Method and apparatus to provide for a handover on a wireless network
A method of integrating handover technology at a data link layer level with handover technology at a network layer level, and an apparatus. The method includes sending a first management message, which requests that a handover at a data link layer level be performed, to a serving base station, receiving ...

04/26/07 - 20070091848 - Reducing data loss during handoffs in wireless communication
A method for reducing data loss when a client device performs a handoff from a first radio station to a second radio station. The method includes detecting imminence of the handoff using one or more criteria. The method also includes buffering incoming data upon the imminence of the handoff to ...

04/26/07 - 20070091847 - Method and apparatus for controlling scanning period in a mobile communication terminal
A method and an apparatus for controlling a WLAN scanning period using a velocity sensor in a mobile communication terminal are provided. The velocity of a user is measured at a predetermined period and it is determined whether the measured velocity satisfies a predetermined condition for changing the scanning period. ...

04/26/07 - 20070091846 - Method of reconfiguring an internet protocol address in handover between heterogeneous networks
a method of communicating information in a wireless mobile communication system is disclosed. More specifically, the method includes a network for establishing handover management modules in a source network and a target network and transmitting a handover request message from the handover management module of the source network to the ...

04/26/07 - 20070091845 - Automatic and seamless vertical roaming between wireless local area network (wlan) and wireless wide area network (wwan) while maintaining an active voice or streaming data connection: systems, methods and program products
A Mobile Station (MS) is able to vertically roam in either direction between two different networks, i.e., WWAN and WLAN. The MS is equipped with a dual mode Radio for WWAN and WLAN transmissions. The WLAN Radio is linked to a WLAN Enterprise Gateway Controller (EGC) via a first air ...

04/26/07 - 20070091844 - Novel vertical handover control algorithm for wlan and umts
In this invention, a novel vertical handover control algorithm, consisting of a throughput-based mapping function, QoS-based dynamic handover thresholds, and performance-based trigger timers, are proposed to resolve uncommon pilot problem, QoS requirements, and ping-pong effects, respectively. An analytic model based on a finite state machine is developed to evaluate the ...

04/26/07 - 20070091843 - Eap/sim authentication for mobile ip to leverage gsm/sim authentication infrastructure
Methods and apparatus for dynamically generating a set of Mobile IP keys are disclosed. The set of Mobile IP keys is dynamically generated using an existing HLR/AuC authentication infrastructure. This is accomplished, in part, by obtaining an International Mobile Subscriber Identity (IMSI) that uniquely identifies a particular Mobile Node. Once ...

04/26/07 - 20070091842 - Method for supporting mobility for dynamic windows clients in a wireless lan network
Methods and apparatus for preventing an IP address from being assigned to a client implementing a protocol such as DHCP are disclosed. This is particularly useful in an environment such as a Mobile IP environment in which a network device (e.g., Access Point) performs proxy registration on behalf of the ...

04/19/07 - 20070086388 - Apparatus and method for supporting handover in a wireless access communication system
An apparatus and a method for supporting an MS-initiated handover in a multi-hop relay BWA communication system are provided. An MS determines whether a handover is required by measuring the strengths of signals received from neighbor BSs and neighbor RSs. If the handover is required, the MS sends to a ...

04/19/07 - 20070086387 - Apparatus and method for handover in wireless access communication system
Provided are an apparatus and a method for handling a handover in multi-hop relay Broadband Wireless Access (BWA) system. In a communication method of a Relay Station (RS) in a multi-hop relay BWA system, a handover request message including a candidate node list is received from a Base Station (BS), ...

04/19/07 - 20070086386 - Method and apparatus for supporting seamless handover in transport layer
A method and apparatus for supporting a seamless handover in a transport layer is provided. In a network using an SCTP, an MN notifies a CN of a handover after the handover occurs. The MN receives a handover confirm message from the CN and sends a response message for the ...

04/19/07 - 20070086385 - Method and apparatus for supporting handover in transport layer
A method and apparatus of supporting a fast handover in a transport layer is provided. In a network using an SCTP (Stream Control Transmission Protocol), an MN (Mobile Node) acquires a first new IP (Internet Protocol) address after a first handover to a first new network area, stores information about ...

04/19/07 - 20070086384 - Method of setting up quality of service in wireless communication network and wireless communication apparatus
A wireless communication apparatus for communicating with a base station is provided with the function of specifying the type of an application from header information of an IP packet issued by the application, searching for a set of radio parameters for assuring a Quality of Service (QoS) required by the ...

04/19/07 - 20070086383 - Method and apparatus for performing handoff in mobile network communication
A server including: a communication unit for wirelessly communicating with a mobile terminal through one of wireless network gateways; and a processing unit for receiving registration request information from the mobile terminal through the communication unit, executing handoff from one wireless interface to another wireless interface and sending a signal ...

04/19/07 - 20070086382 - Methods of network access configuration in an ip network
Apparatus performs a method that includes the steps of: receiving (210) a location parameter request for a mobile entity; determining (220) a set of location parameters corresponding to the mobile entity, the set of location parameters comprising at least an identification of a current point of attachment of the mobile ...

04/19/07 - 20070086381 - Rate control method and apparatus for data packet transmission
Base stations control the transmission rate that is used by UE (user equipment) to forward them information. A UE periodically forwards a rate request to a base station if the UE needs to have its data transmission rate to the base station increased or decreased, and the base station responds ...

04/12/07 - 20070081497 - Method for improving intercellural transfers in cellular mobile radio communication systems
One aspect of the present invention is a method for improving intercellular transfers in cellular mobile radio communication systems, the method including at least one step in which a mobile radio communication network entity sends another mobile radio communication network entity, for an intercellular transfer from a first cell in ...

04/12/07 - 20070081496 - Method and system for the localization of a mobile wlan client
A method and a system for the localization of a mobile WLAN client, located within a WLAN network of multiple WLAN stations. Static reference points are ascertained by measuring field strengths of the WLAN stations at spatial coordinates, aided by WLAN client(s), and assignment of the measured field strengths to ...

04/12/07 - 20070081495 - Base station methods and apparatus for establishing connections
Methods and apparatus for establishing communication links, used to support communications sessions with one or more end nodes, e.g., mobile devices, are described. Various features are directed to a mobile node controlling the establishment of initial links to a first access node and the establishment of new links from a ...

04/12/07 - 20070081494 - Method and apparatus for facilitating handoffs in a wireless communication network
A method and apparatus for facilitating handoff for a mobile entity in a wireless communication network is provided (100). The method comprising obtaining a first internet protocol (IP) address for the mobile entity (105) when the mobile entity is attached to a first access node, identifying at least one target ...

04/12/07 - 20070081493 - Arrangements and method for handling macro diversity in a universal mobile telecommunications system
The present invention relates to methods and arrangements for selecting one or more Diversity Handover (DHO) nodes, such as a Node B or a Radio Network Controller (RNC) executing a macro diversity functionality, in a mobile telecommunication system wherein the macro diversity functionality is distributed to one or a plurality ...

04/12/07 - 20070081492 - Protocol context transfer in a mobile communication system
The present invention relates to a method for controlling a radio cell change of a communication terminal from a first radio cell to a second radio cell, wherein the first and the second radio cell is controlled by at least one base station of a mobile communication system. The present ...

04/05/07 - 20070076664 - Handoff decision making for heterogeneous network environments
A method and apparatus of handoff decision making for heterogeneous network environments are described. In one embodiment, the method includes receiving session initiation protocol (SIP) messages from a mobile device via a wireless local area network (WLAN). The SIP messages contain data identifying at least one current network characteristic. The ...

04/05/07 - 20070076663 - Providing handoff in a spread spectrum wireless communications system for high rate packet data
The present invention provides a method and an apparatus for wireless communication between a wireless unit and a set of base stations. The method includes signaling the wireless unit about a plurality of transmissions of same packet data from the set of base stations to enable a soft handoff on ...

04/05/07 - 20070076662 - Handoffs in a wireless local area network
The disclosure is directed to a mobile communication device, and method for handing off a mobile communications device between access points in a Wireless Local Area Network (WLAN). The mobile communications device includes a processor configured to access a database having service quality information for access points in a WLAN, ...

04/05/07 - 20070076661 - Method of performing handoffs in wireless local area networks
In the method, communication is established between a mobile device and access points in a wireless local area network by first connecting to a first access point on a first channel. After the first connection is established, the method determines whether a second access point is available before disconnecting from ...

03/29/07 - 20070070949 - Method, device, system and software product for providing system information to enable packet switched handover
A method, mobile device, network device, system, and software product are presented for providing an indication whether a source radio network controller requests to receive system information from a handover target, and for receiving the system information in a target to source transparent container, if the indication requests to receive ...

03/29/07 - 20070070948 - Conferencing pstn gateway methods and apparatus to facilitate heterogeneous wireless network handovers for mobile communication devices
In one illustrative example, a mobile communication device operating in a wireless local area network (WLAN) of a communication network maintains an inter-enterprise voice call via its WLAN interface (e.g. 802.11/VoIP/SIP) with another communication device in the communication network. Communications of the voice call are maintained solely within the communication ...

03/29/07 - 20070070947 - Method for set maintainance by mobile station in mobile communication system, and pilot channel searcher block using the same
A method for maintaining a set by a mobile station in a mobile communication system, and a pilot channel searcher block using the same are provided. The method includes receiving a pilot signal from a base station of at least one active set, checking a variation of a path position ...

03/29/07 - 20070070946 - Method and apparatus for providing seamless mobility across multicast domains
A mobile station (303) provides seamless mobility across multicast domains for communicating with a multicast group (109) in a telecommunication system (300) that includes a home domain (102) and a visited domain (302). The mobile station (303) includes a local source address (324) and a home address (322). The mobile ...

03/22/07 - 20070064654 - Proxy mobile node capability for mobile ip
A method and system are provided for transmitting information in a Mobile Internet Protocol (IP) environment, which includes a home network, a home agent (HA) provided at the home network, a base station (BS) broadcasting a pilot signal, a foreign agent (FA) provided at or associated with the BS, a ...

03/22/07 - 20070064653 - Method and system for configuring ip address in a mobile communication system
An apparatus and method for providing a seamless communication service in a mobile communication system. The method includes transmitting a first message to a base station when an IP subnet has been changed due to movement of the portable terminal, the first message including a Medium Access Control (MAC) address ...

03/22/07 - 20070064652 - Handover method and apparatus in digital multimedia broadcasting system
A handover method and apparatus in a digital multimedia broadcasting (DMB) system that transmits/receives broadcast data through a frame group using different frequencies. A handover method includes receiving a first frame group header at a serving frequency, and receiving a burst of the desired service at the serving frequency according ...

03/22/07 - 20070064651 - Apparatus and method for performing handoff in cellular environments
Provided are an apparatus and a method for performing a handoff in a broadband cellular communication system with a frequency reuse factor of N by using both of two neighboring frequency allocations. The method includes determining, if a mobile station receives a signal from a second base station during communication ...

03/22/07 - 20070064650 - Sending an identifier of a wireless local area network to enable handoff of a mobile station to the wireless local area network
In a wireless communications network, the presence of a wireless local area network in a cell segment is determined. An identifier of the wireless local area network in the cell segment is sent to at least one mobile station in the cell segment to enable the at least one mobile ...

03/22/07 - 20070064649 - Two-layer network identification
A method, apparatus, system, and software product are presented for managing data flow via connections between a mobile terminal and a destination internet protocol network. A plurality of sets of connection parameters are accessed by a mobile terminal, each of the sets including at least one parameter for an access ...

03/22/07 - 20070064648 - Method and system for hand-over from wideband code division multiple access network to code division multiple access network by using dummy pilot signal
Disclosed are a method and a system for handover from a WCDMA network to a CDMA-2000 network by using a dummy pilot signal. The method comprises the steps of: a) a multimode terminal receiving a WCDMA signal level measurement message, turning on a CDMA-2000 modem mounted on the multimode terminal ...

03/22/07 - 20070064647 - Secure intra-and inter-domain handover
To achieve a secure and fast handover in a distributed mobile communication environment (10), the control functionality is lying at the borderline between wireless and wire-bound communication network elements, and it is proposed to, firstly, execute a mutual authentication between a mobile device (26) and a new access point (14) ...

03/15/07 - 20070058589 - Mobile communication system, mobile station and diversity handover branch control method
A branch candidate selecting method by a mobile station and a diversity handover control method on a network side in DHO performance are provided which consider a maximum cable branch number and maximum radio branch number of the mobile station, when the mobile station detects the plurality of addition branch ...

03/15/07 - 20070058588 - Reducing handoff latency in a wireless local area network
If a handoff by a mobile station currently associated with a particular access point is probable, then the particular access point sends an activation alert to one or more other access points. An access point receiving the activation alert that is in a low-power state enters a higher-power state. An ...

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