Wireless link recovery method

A recovery method and wireless link technology, applied in the direction of wireless communication, electrical components, etc., can solve the problems of limited content of wireless signaling bearer configuration, limited reliability, etc., and achieve the effect of improving performance and shortening the recovery time

Active Publication Date: 2009-08-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And this message is sent before the completion of RRC connection re-establishment. Logically, it must be sent in transparent radio link mode (RLC TM) on the public channel. This sending method limits the size of this message or the reliability of message sending. Therefore, steps 205 and 206 are only used to restore the wireless signaling bearer, because the configuration content of the wireless signaling bearer is very limited

Method used

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Examples

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no. 1 example

[0062] This embodiment describes the normal wireless link failure recovery process, including the following steps:

[0063] Step 401: The terminal reselects the serving cell after a radio link failure occurs during communication with the serving cell;

[0064] Step 402: the terminal sends a random access preamble message;

[0065] Step 403: The base station responds to a random access response message, which includes information such as timing advance TA, uplink authorization resources, etc.;

[0066] Step 404: the terminal sends an RRC connection reestablishment request. The message includes the identification information of the terminal, including at least the identity C-RNTI of the terminal in the serving cell, the physical cell ID and MAC-I parameters of the source cell;

[0067] The base station determines the role of the current cell according to the above identification information, that is, determines that it is the serving cell;

[0068] Step 405: After verifying t...

no. 2 example

[0071] This embodiment describes the RRC connection recovery process of the terminal returning to the source cell after the handover fails, including the following steps:

[0072] Step 501: After the handover fails, the terminal selects a cell, which is assumed to be the source cell of the handover;

[0073] Step 502: The terminal sends a random access preamble message;

[0074] Step 503: The base station responds to a random access response message, which includes information such as timing advance TA, uplink authorization resources, etc.;

[0075] Step 504: the terminal sends an RRC connection reestablishment request. The message includes the identification information of the terminal, including at least the identity C-RNTI of the terminal in the source cell, the physical cell ID and MAC-I parameters of the source cell;

[0076] The base station determines the role of the current cell according to the above identification information, that is, determines that it is the sou...

no. 3 example

[0080] This embodiment describes the RRC connection recovery process of the terminal selecting the target cell after the handover fails, including the following steps:

[0081] Step 601: After the handover fails, the terminal selects a cell, which is assumed to be the target cell of the handover;

[0082]Step 602: The terminal sends a random access preamble message;

[0083] Step 603: The base station responds to a random access response message, which includes information such as timing advance TA, uplink authorization resources, etc.;

[0084] Step 604: the terminal sends an RRC connection reestablishment request. The message includes the identification information of the terminal, including at least the identity C-RNTI of the terminal in the source cell, the physical cell ID and MAC-I parameters of the source cell;

[0085] The base station determines the role of the current cell according to the above identification information, that is, determines that it is the target ...

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Abstract

The invention relates to a method for restoring a wireless link by a terminal and a network after wireless link failure occurs in a distributed cellular wireless communication system, comprising the following steps: the terminal selects a cell after the wireless link failure occurs, and then sends wireless resource control connection reconstruction request to the cell; the cell responds a wireless resource control connection reconstruction message to the terminal, and the reconstruction message instructs the terminal to restore wireless configuration corresponding to a source cell or a targetcell stored by the terminal; and the source cell can be a service cell. After restoring the wireless configuration, the terminal returns a response message to the cell. According to the method, when the terminal returns to the source cell (service cell), target cell or a prepared cell after the wireless link failure occurs, the RRC reconstruction process can be simplified, thus shortening the time for restoring a control plane and a user plane, and improving the performance of the system.

Description

technical field [0001] The invention relates to a method for a terminal and a network to recover a wireless link after a wireless link failure occurs in a distributed cellular wireless communication system, wherein the wireless link failure refers to switching failure and general wireless link failure. Background technique [0002] figure 1 A schematic diagram of a distributed cellular wireless communication system is shown. Such as figure 1 As shown, the distributed cellular wireless communication system is mainly composed of a terminal (or mobile station), a base station (Base Station, BS for short), and a core network (Core Network, CN for short). [0003] The base stations can be connected logically or physically according to the needs. The network composed of the base stations is called a radio access network (Radio Access Network, referred to as RAN), which is responsible for access layer affairs (for example, management of wireless resources, etc.); the base station...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W74/08
Inventor 杜忠达王继承
Owner ZTE CORP
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