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Rebuilding method of wireless resource control, user equipment, base station and communication system

A technology of radio resource control and user equipment, which is applied in the field of communication, can solve problems such as UE call drop and reduce UE call drop rate, and achieve the effect of reducing call drop rate and better user experience

Active Publication Date: 2011-11-23
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a radio resource control reestablishment method, user equipment, base station, and communication system to solve the problem of the prior art when UE initiates an RRC reestablishment request message during inter-base station handover because it carries handover target cell information and is rejected for reestablishment And the defect that causes the UE to drop the call, reduce the UE's call drop rate in the inter-station handover process of the cell base station

Method used

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  • Rebuilding method of wireless resource control, user equipment, base station and communication system
  • Rebuilding method of wireless resource control, user equipment, base station and communication system
  • Rebuilding method of wireless resource control, user equipment, base station and communication system

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Embodiment 1

[0038] figure 1 A schematic diagram of a radio resource control reestablishment method provided in Embodiment 1 of the present invention, as shown in figure 1 As shown, the radio resource control reestablishment method may include the following steps:

[0039] Step 101 , during the handover process between base stations, look up the source cell information stored in the user equipment (UE) according to the E-UTRAN Cell Global Identity (ECGI for short) of the source cell. The source cell information includes: the physical cell identifier PCI of the source cell, the cell radio network temporary identifier CRNTI assigned by the source cell to the user equipment, and the short MAC identifier Short-MAC I of the source cell;

[0040] Specifically, a cell information table may be stored in the UE, as shown in Table 1 below as a simple example. The cell information table includes: the correspondence between the source cell ECGI of the UE before and after handover and the UE cell inf...

Embodiment 2

[0052] figure 2 A schematic diagram of the radio resource control reestablishment method provided in Embodiment 2 of the present invention, as shown in figure 2 As shown, the radio resource control reestablishment method may include the following steps:

[0053] Step 201. When sending a handover request message to the target cell base station, save the intermediate key carried in the handover request message;

[0054] Step 202: Obtain the Short-MAC I of the source cell according to the transparent container information element (Target eNB to Source eNB Transparent Container) sent by the base station of the target cell to the base station of the source cell and the intermediate key;

[0055] Wherein, step 202 may specifically include:

[0056] If the handover response message returned by the base station of the target cell is received, from the transparent container information element carried in the handover response message sent by the base station of the target cell to t...

Embodiment 3

[0063] image 3 A schematic diagram of the radio resource control reestablishment method provided by Embodiment 3 of the present invention, as shown in image 3 As shown, in the handover process between base stations, in the period from when the source cell base station issues a handover command to when the target cell base station initiates the path switch (PATH SWITCH) of the UE to the core network, in order to prevent the UE from carrying the target cell information Reconstruction of the base station in the source cell is rejected, and the radio resource control reestablishment method may specifically include the following steps:

[0064] Step 301, when the source cell base station sends a handover request message to the target cell base station, the source cell base station can save the intermediate key (for example: K eNB* ). Among them, K eNB* It is the key of the integrity encryption algorithm used between UE and eNodeB. For details, please refer to the 3GPP TS24.301...

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Abstract

The invention discloses a rebuilding method of wireless resource control, user equipment, a base station and a communication system. The rebuilding method of wireless resource control comprises: during the process of base station switchover, finding source cell information stored in user equipment, according to a cell global identification ECGI of source cell E-UTRAN; and sending request message of wireless resource control carrying the source cell information to the source cell base station of the source cell. The embodiment of the invention can send RRC rebuiding request message to the source cell base station, according to the source cell information stored in the UE, so that the source cell base station can control RRC rebuilding, according to the source cell information before UE switchover, and can reduce drop call rate of the UE during the process of switching between cell base stations.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of communications, and in particular, to a radio resource control reestablishment method, user equipment, a base station, and a communications system. Background technique [0002] In the existing 3GPP TS36.331 protocol (3GPP TS 36.331V8.13.0 (2011-03), see the 3GPP website for details: http: / / www.3gpp.org), user equipment (User Equipment; referred to as: UE) initiates A radio resource control (Radio Resource Control; RRC for short) reestablishment request carries a user equipment identity (UE-Identity; UEID for short) and a reestablishment cause value (Reestablishment Cause). Wherein, the UEID includes: Cell Radio Network Temporary Identify (Cell Radio Network Temporary Identify; CRNTI for short), Physical Cell Identity (Physical Cell Identity; PCI for short) and the check value of the resident cell (short MAC identification Short MAC-I ). MAC is short for Message Authentication ...

Claims

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Application Information

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IPC IPC(8): H04W36/08H04W76/02
CPCH04W36/08H04W76/028H04W76/02H04W76/19
Inventor 张健王振东吴连方
Owner HUAWEI TECH CO LTD
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