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Method and apparatus for cell reselection for a wireless communication device




Title: Method and apparatus for cell reselection for a wireless communication device.
Abstract: A method and apparatus for cell reselection for a wireless communication device are disclosed. ...


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USPTO Applicaton #: #20140050129
Inventors: Raghavendra Magadi Rangaiah, Andrew John Farnsworth, Takashi Suzuki


The Patent Description & Claims data below is from USPTO Patent Application 20140050129, Method and apparatus for cell reselection for a wireless communication device.

RELATED APPLICATIONS

The present application is a continuation of U.S. patent application Ser. No. 13/286,723, filed Nov. 1, 2011, the contents of which are incorporated herein by reference.

BACKGROUND

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1. Technical Field

This application relates to mobile telecommunications systems in general, and in particular relates to a method and apparatus for handling UE mobility information for a wireless communication device. In particular, though not limited to, the application relates to a method and apparatus for cell reselection.

2. Description of the Related Art

In a typical cellular radio system, mobile user equipment (UE) communicates via a radio access network (RAN) to a core network. User equipment (UE) comprises various types of equipment such as mobile telephones (also known as cellular or cell phones), lap tops with wireless communication capability, personal digital assistants (PDAs) etc. These may be portable, hand held, pocket sized, installed in a vehicle etc and communicate voice and/or data signals with the radio access network.

A radio access network covers a geographical area typically divided into a plurality of cell areas. Each cell area is served by at least one base station, which in UMTS may be referred to as a Node B. Each cell is typically identified by a unique identifier which is broadcast in the cell. The base stations communicate at radio frequencies over an air interface with the UEs within range of the base station. Several base stations may be connected to a radio network controller (RNC) which controls various activities of the base Stations. The radio Network controllers are typically connected to a core network.

UMTS is a third generation public land mobile telecommunication system. Various standardization bodies are known to publish and set standards for third generation public land mobile telecommunication systems, each in their respective areas of competence. For instance, the 3GPP (Third Generation Partnership Project) in addition to publishing and setting standards for UMTS, also publishes and sets standards GSM (Global System for Mobile Communications) 3GPP2 (Third Generation Partnership Project 2) publishes and sets standards for CDMA (Code Division Multiple Access).

The 3GPP Technical Specification 25.331, release 10 addresses some aspects of UMTS RRC (Radio Resource Control) protocol requirements between the UMTS Terrestrial Radio Access Network (UTRAN) and the mobile user equipment (UE). 3GPP Technical Specification 25.304, release 10, addresses some UE procedures in Idle mode and procedures for cell reselection in connected mode. 3GPP Technical Specification 25.133, release 10, addresses some requirements for support of radio resource management (FDD). The specifications are referred to herein as the “Standard”, and are incorporated herein by reference.

More particularly clause 8.1.1.6.11a of the 25.331 specification relates to some aspects of handling information in System Information Block (SIB) type 11 bis. Clause 5.2.6 of the 25.304 specification relates to some aspects of cell reselection evaluation process. Clause 4.2.2.1 of the 25.133 specification relates to some aspects of measurement and evaluation of cell selection criteria of a serving cell.

BRIEF DESCRIPTION OF THE DRAWINGS

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Embodiments will now be described, by way of example only, with reference to the attached drawings, in which:

FIG. 1 is a diagram capturing the current 3GPP standardised UE behaviour as described therein;

FIG. 2 is a flow diagram capturing the current 3GPP standardised UE behaviour as described therein;

FIG. 3 is a diagram capturing the current 3GPP standardised UE behaviour as described therein;

FIG. 4 is a diagram capturing the current 3GPP standardised UE behaviour as described therein;

FIG. 5 is a flow diagram illustrating steps performed according to a first aspect of the approach described herein;

FIG. 6 is a flow diagram illustrating steps performed according to an alternative related to the first aspect of the approach described herein;

FIG. 7 is a flow diagram illustrating steps performed according to an alternative related to the first aspect of the approach described herein;

FIG. 8 is a flow diagram illustrating steps performed according to an alternative related to the first aspect of the approach described herein;

FIG. 9 is a flow diagram illustrating steps performed according to a second aspect of the approach described herein;

FIG. 10 is a flow diagram illustrating steps performed according to a third aspect of the approach described herein;

FIG. 11 shows an overview of a network and a UE device;

FIG. 12 is a block diagram illustrating an embodiment of a protocol stack provided in a UE device; and

FIG. 13 is a block diagram illustrating a UE device.

The same reference numerals are used in different figures to denote similar elements.

DETAILED DESCRIPTION

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OF THE DRAWINGS

A method and apparatus for cell reselection for a wireless communication device is described herein. In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the new, inventive, and non-obvious concepts disclosed herein (hereinafter “concepts” or “concept”). It will be apparent, however, to one skilled in the art that the technique may be practised without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to avoid unnecessarily obscuring the concepts disclosed herein.

The needs identified in the foregoing Background, and other needs and objects that will become apparent from the following description, are achieved by, in one aspect, a method and apparatus for cell reselection for a wireless communication device. In other aspects, the concept encompasses a wireless telecommunication device and a computer-readable medium configured to carry out the foregoing actions, as well as a data carrier carrying thereon or therein data indicative of instructions executable by processing means to cause those means to carry out the foregoing actions. Examples are CD-ROMs, memory sticks, dongles, transmitted signals, downloaded files etc. In particular, the method may be implemented in a mobile telecommunications device, with or without voice capabilities, or other electronic devices such as handheld or portable devices.




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stats Patent Info
Application #
US 20140050129 A1
Publish Date
02/20/2014
Document #
File Date
12/31/1969
USPTO Class
Other USPTO Classes
International Class
/
Drawings
0


Wireless Communication Device Wireless Cell Reselection Reselection

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