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  System and method of telephonic dialing simulationUSPTO Application #: 20080051106Title: System and method of telephonic dialing simulation Abstract: A multiple mode, personal, wireless communications system exists within a radiotelephone network serving general customers and provides additional services to a select group of customers. The system uses handsets which automatically switch between a standard cellular radiotelephone mode of operation and an enhanced cordless mode when the handsets are within range of pico cells that are interconnected to the public switched telephone network. Each pico cell is controlled via a framework of overlay cells that operates independently of the radiotelephone network and uses a unique control protocol on a small number of reserved cellular channels. Each pico cell consists of a spectrally dynamic, non-capturing, frequency agile, multi-purpose base station provided at customer-selected locations to cooperate with the overlay cell framework. Each pico cell is capable of supporting multiple handsets and uses low power operation that achieves limited coverage. Each pico cell reduces traffic on the standard cellular radiotelephone network by independently handling registered handsets. An alternate line option module provides wireless local interconnect capability to selectively route call traffic between land lines and the standard cellular radiotelephone network. Service control units and host stations facilitate wireless activation and control of each pico cell and handset via the overlay cell framework. (end of abstract) Agent: Verizon Patent Management Group - Arlington, VA, US Inventors: Robert G. Zicker, John K. Dion USPTO Applicaton #: 20080051106 - Class: 455456200 (USPTO) Related Patent Categories: Telecommunications, Radiotelephone System, Zoned Or Cellular Telephone System, Location Monitoring, Based On Request Signal The Patent Description & Claims data below is from USPTO Patent Application 20080051106. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF INVENTION [0001] 1. Field of Invention [0002] The present invention relates to an improved wireless communications system. More particularly, the preferred embodiment of the invention concerns a multiple mode communications system, including special handsets designed to operate with standard analog or digital protocols when within the coverage of a standard cellular radiotelephone network, and to automatically switch to an enhanced cordless mode that operates with unique protocols when within the coverage area provided by independent, low power pico cells that are connected to the wireline telephone network. Pico cells are provided at customer selected locations to cooperate with a framework of overlay cells that operate independently of the cells of the cellular network. [0003] This overlay cell framework allows the service provider to exercise complete control over the operation of each special handset and the pico cell system by means of service control units and host stations. The standard cellular system can be further enhanced by the addition of zone identifier overhead messages which are ignored by standard handsets but interpreted by the special handsets to inform those customers continuously of the special handset's current operating mode. [0004] 2. Description of Related Art [0005] There has long been a recognized need for ubiquitous telecommunications services wherein each customer is assigned a personal service number and provided with suitable equipment which will permit the customer to have two-way communication capability (i.e., the ability to make and receive calls) regardless of the customer's changing location. [0006] Systems that extend beyond traditional wireline telephone service have been developed in order to more closely achieve this capability from a technical perspective. For example, recent innovations in paging, standard cordless within the home telephone service, cellular telephone service and personal communications systems are well known. The designs of such systems all comprise efforts to cost effectively satisfy the need for ultimate ubiquitous service. However, each system has well recognized technical and cost disadvantages which cause it to fall short of providing ultimate telecommunications service. [0007] Accordingly, a need still exists for an improved communications system that comes closer to providing ubiquitous communications service to customers than existing systems. RELATED PATENTS [0008] The following U.S. patents assigned to the assignee of the present invention were issued to Robert G. Zicker et. al. and are related to this invention to the extent that they relate generally to improvements in telecommunications systems or service: TABLE-US-00001 U.S. Pat. No. Title 5,046,082 Remote Accessing System for Cellular Telephones 5,144,649 Cellular Radiotelephone Credit Card Paystation Method 5,159,625 Method of Selecting the Cellular System with Which a Cellular Mobile Radiotelephone Communicates 5,220,593 Cellular Radiotelephone Credit Card Paystation Method 5,247,564 Adaptive Vehicle Alarm Detection and Reporting System 5,247,160 Method for Transmitting Credit Card Information for a Group of Passengers SUMMARY OF INVENTION [0009] Therefore, it is an object of this invention to provide an improved telecommunications system which more completely meets customer needs for low cost, ubiquitous telecommunications service. [0010] It is another object of the invention to provide an improved telecommunications system, designed to include a standard cellular network, and which further includes a network of overlay cells that operate independently of the cells of the cellular network. [0011] It is a further object of the invention to provide, in such a system, a multi-channel pico station at each customer location that, in turn, supports multiple portable telephone handsets, with each handset being capable of operating in a wireless or pico mode when within the customer premises, and in a standard cellular mode when away from the customer premises and yet within the cellular coverage area. [0012] It is yet a further object of the invention to provide such an improved telecommunications system wherein call forwarding capability is provided in conjunction with distinctive ring so that a customer with a portable personal handset selected to operate in one of the dual modes can receive and readily identify incoming calls, directed to the assigned cellular customer number, through the unselected or inactive mode of the system. [0013] It is yet another object of the invention to provide automatic registration and control of such a dual mode portable handset, without customer action, and with the customer being provided with a display advising the status or mode which the handset is set to operate in at any time, so that the customer can make informed, cost-effective decisions as to call placement. [0014] It is another object of the invention to provide in a dual mode system using one radio per handset, a mode of operation based upon a unique, though cellular compatible, protocol that permits easy dynamic channel allocation and occupancy. [0015] It is another object of the invention to provide an alternate line option capability which permits selective allocation of call traffic between the customer premises and the cellular network. [0016] These objects and other features and advantages of the invention are attained in a telecommunications system that is designed to operate in conjunction with a standard cellular network having multiple cell sites of either analog or digital configuration and embodying standard geographical coverage. The system also includes a comparable network of overlay cells that operate independently of the standard cell sites of the cellular network. Alternatively, the system could be used within a radiotelephone network of other character, such as an SMR network, for example. [0017] Preferably, each overlay cell provides radio communication coverage to a geographical area that corresponds generally to the cellular site area, but on a set of reserved cellular frequencies that are selected with the maximum possible separation with respect to the assigned cellular network signaling frequencies, so as to be non-interfering. [0018] To cooperate with the overlay cells a base station, referred to hereinafter as a pico station, is provided at each customer site. Each pico station is designed to support up to six improved portable handsets which function in dual modes. In a first mode each handset functions as a normal portable network or cellular telephone, when it is physically removed from the proximity of the pico station. A second wireless mode of operation is described herein for the handsets of the system which has been referred to herein as enhanced cordless on the first iterations and will be referred to as the pico mode in subsequent usage. The enhanced cordless mode of this invention differs from the operation of standard cordless telephones in several respects. This system employs a unique burst mode communication control protocol between the handsets and the pico station which is not found in standard cordless operation. This protocol is compatible with cellular standards to permit dual mode operation which would not be possible with standard cordless. Moreover, the standard cordless frequency arrangement is obviously different from cellular frequencies used in this system. Other differences will become apparent from the description that follows, which result in operational improvements in the service offered. [0019] The use of the unique protocol of this system permits remote activation and control using the 10 k bit Manchester encoded data pathway inherent in cellular telephone hardware. Therefore, when close to the pico station, the handset operates as a cordless telephone supported by the pico station via a connection to the house PSTN wiring. [0020] In the preferred mode, call delivery is provided through a link that may also include an alternate line option module connected between the pico station and the PSTN. With that arrangement, service can be provided through direct access from the pico station to the public switched telephone network, or alternatively, service from the pico station can be selectively redirected back to the cellular network by the radio of the alternate line option module. A significant advantage of the system arises from the capability of allocating selected portions of call traffic between these two paths, in order to accommodate call capacity and varying call demand. This permits deployment of the system in areas with limited cellular capacity, without necessitating rationing of service. [0021] Service control units and a host station are provided to facilitate set up and control of the portable handsets and pico stations using remote programming techniques which were not previously practical. Continue reading... Full patent description for System and method of telephonic dialing simulation Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this System and method of telephonic dialing simulation patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. 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