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Method of triggering of radio network subsystem relocation

A wireless network and relocation technology, applied in transmission systems, wireless communications, digital transmission systems, etc., can solve problems such as increasing delay, reducing system reliability, and occupying Iur bandwidth resources, eliminating interruptions and improving wireless resource utilization. rate, the effect of optimizing system resources

Inactive Publication Date: 2008-11-26
UT STARCOM CHINA
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  • Claims
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Problems solved by technology

[0005] When the SRNC no longer controls any cell that is currently communicating with the UE, as shown in Figure 4(a), there will be many problems when the SRNC still controls the communication with the UE through the Iur interface: for example, the bandwidth resource of Iur is occupied , increasing the delay caused by Iur routing, reducing the reliability of the system, etc.

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  • Method of triggering of radio network subsystem relocation
  • Method of triggering of radio network subsystem relocation
  • Method of triggering of radio network subsystem relocation

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Embodiment Construction

[0049] Hereinafter, preferred embodiments of the present invention will be described in conjunction with the accompanying drawings. According to the foregoing description, when the UE is in the RRC connected mode, the RRC layer has four possible states: Cell_DCH, Cell_FACH, Cell_PCH, and URA_PCH. The RNS relocation triggering method proposed by the present invention is related to the RRC connection state of the UE. In the following, how to implement the RNS relocation triggering method of the present invention in different connection states of the RRC connection mode will be discussed respectively.

[0050] (1) Trigger method of SRNS relocation in Cell_DCH state

[0051] The main factors related to the triggering of SRNS relocation in the Cell_DCH state are:

[0052] (a) the number of cells controlled by the SRNC in the active set;

[0053] (b) The number of cells controlled by the SRNC in the monitoring set and their priorities;

[0054] (c) dedicated channel processor lo...

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Abstract

The present invention discloses a method of triggering radio network subsystem relocation in a mobile communicatio system, where the system includes: the core network communication with the universal terrestrial radio access network (UTRAN); UTRAN consisting of multiple radion network subsystems (RNS) and communicating with one or more UE via Uu interface, each said RNS comprising a radio network controller (RNC) and one or more nodes communicating with said RNC via Iub interface, and each of nodes comprising one or more cells, while RNCs communicating via Iur interface; and said method includes the steps of: determining radio resource control (RRC) connected state that UE located currently; performing the sub-step of triggering service RNC(SRNS) relocating according to RRC-connected state to UE; completing relocatio of SRNS under different RRC-connected state. In accordance to the present invention, it is optimized systematics resource of UTRAN, and may reduce or dispel interrupt of user's service stream for real time service transmission caused during SRNS's relocation in prior art, and can rais the radio resource utilization ratio of communication system at the same time.

Description

technical field [0001] The invention relates to a method for triggering a service radio network controller to initiate a service radio network subsystem relocation process in a universal terrestrial radio access network of a broadband code division multiple access system. Background technique [0002] In the wideband code division multiple access (WCDMA) system of the third generation cooperation project (3GPP), in order to support the mobility of the user equipment (UE) in the universal terrestrial radio access network (UTRAN), the serving radio network subsystem (SRNS) is defined. ) relocation process. This process enables the UTRAN to transfer the radio resource control (RRC) connection activated by the UE from the source radio network controller (RNC) or serving RNC (SRNC) to the target RNC (or DRNC), thereby optimizing the system resources of the UTRAN. [0003] In the network system structure of the Universal Mobile Telecommunications System (UMTS) shown in Figure 1, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/38H04L12/56H04W36/12
CPCH04W36/12
Inventor 刘晟钟鑫张春
Owner UT STARCOM CHINA
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