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Radio resource control (RRC) connection reestablishing method and equipment

A technology for wireless resource control and connection re-establishment, applied in wireless communication, connection management, network traffic/resource management, etc., and can solve problems such as wireless link failure

Active Publication Date: 2012-09-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Regardless of whether it is a single RRC connection or a dual RRC connection, there may be a wireless link failure in the connection between the terminal and a certain station.

Method used

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  • Radio resource control (RRC) connection reestablishing method and equipment
  • Radio resource control (RRC) connection reestablishing method and equipment
  • Radio resource control (RRC) connection reestablishing method and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] see figure 1 , this embodiment provides a method for re-establishing an RRC connection. The sites to which the terminal is currently attached include a first site and a second site. The first RRC connection is maintained between the terminal and the first site, and the terminal is maintained between the second site. For a second RRC connection, the method includes:

[0060] S11: When a radio link failure occurs in the first RRC connection, the terminal performs cell reselection;

[0061] S12: If the cell reselected by the terminal belongs to the second site, or if the cell reselected by the terminal belongs to the same cell group as the cell connected to the second RRC, the terminal reselects another cell or the terminal stops the cell reselection operation and releases the first RRC connection;

[0062] S13: If the cell reselected by the terminal does not belong to the second site, or if the cell reselected by the terminal does not belong to the same cell group as th...

Embodiment 2

[0066] This embodiment is improved on the basis of Embodiment 1.

[0067] see figure 2 , in the context of carrier aggregation between different sites, the RRC connection re-establishment scheme based on dual RRC connections is as follows:

[0068] 100: The sites to which the terminal is currently attached include a first site and a second site, and two independent RRC connections are maintained between the terminal and the first site and between the terminal and the second site.

[0069] In this embodiment, the RRC connection between the terminal and the first station is called a first RRC connection, and the RRC connection between the terminal and the second station is called a second RRC connection.

[0070] 101: During communication, a radio link failure occurs in the first RRC connection between the terminal and the first site, that is, the terminal loses the first RRC connection between the terminal and the first site.

[0071] 102: After a radio link failure occurs i...

Embodiment 3

[0085] see image 3 , this embodiment provides a method for re-establishing an RRC connection. The sites to which the terminal is currently attached include a first site and a second site, and the first RRC connection is maintained between the terminal and the first site. The method includes:

[0086] S21: When a radio link failure occurs in the first RRC connection, the second station receives a report message that a radio link failure occurs in the first RRC connection sent by the terminal;

[0087] S22: The second station determines whether to allow the terminal to perform re-establishment of the first RRC connection, or determines whether to allow the terminal to perform re-establishment of the RRC connection with the second station;

[0088] S23: The second station sends an indication message corresponding to the determination result to the terminal according to the determination result.

[0089] This embodiment provides a solution for maintaining RRC connection re-estab...

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Abstract

The invention discloses a radio resource control (RRC) connection reestablishing method and equipment, which belong to the field of radio communication. The method comprises the following steps that: when radio links of first RRC connection fail, a terminal reselects a cell; if the cell reselected by the terminal belongs to a second station or the cell reselected by the terminal and a cell of second RRC connection belong to a same cell group, the terminal reselects another cell or stops the operation of reselecting the cell and releases the first RRC connection; and if the cell reselected by the terminal does not belong to the second station or the cell reselected by the terminal and the cell of the second RRC connection do not belong to the same cell group, the terminal reestablishes the RRC connection on the basis of the reselected cell. According to a scheme for maintaining the reestablishment of the PRC connection between the terminal and different stations, the terminal can guarantee data services of the terminal through an RRC connection reestablishing process when the connection between the terminal and one station fails.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and equipment for re-establishing a radio resource control RRC connection. Background technique [0002] Carrier aggregation is the aggregation of multiple carriers into a carrier with a larger bandwidth to support high-speed data transmission rates. In some application scenarios, a terminal needs to aggregate carriers from two different sites, which is called a carrier aggregation technology between different sites. [0003] In the context of carrier aggregation between different sites, one RRC (Radio Resource Control, radio resource control) connection or two RRC connections may be maintained between the terminal and the network. The so-called maintaining an RRC connection means that the terminal only establishes a bearer for transmitting RRC control messages with one of the stations. The so-called maintenance of two RRC connections means that the termin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/04H04W76/02
CPCH04W36/08H04W76/028H04W72/00H04W28/04H04W76/19
Inventor 常俊仁李亚娟张永平张亮亮
Owner HUAWEI TECH CO LTD
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