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Fast connection establishment method and system after reconstruction of radio resource control connection fails

A technology for radio resource control and connection re-establishment, applied in connection management, wireless communication, access restriction, etc., can solve problems such as affecting user service experience, reducing the speed of RRC re-establishment connection, etc., achieving fast RRC connection establishment, saving cell selection and Random access time, the effect of reducing time consumption

Inactive Publication Date: 2010-11-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] According to the above, it can be seen that during the RRC connection reestablishment process of the UE, the RRC connection reestablishment fails after being rejected by the target cell because the target cell does not have the context of the UE. The cell selection process generally selects the target cell when the connection is reestablished. According to the current processing flow, in this case, the UE needs to return to the RRC-IDLE state and wait for the NAS to initiate a service request or a tracking area update request before reestablishing the connection. When the target cell re-initiates random access and establishes an RRC connection, this process significantly reduces the speed of RRC reestablishment connection establishment, and even affects the user's service experience

Method used

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  • Fast connection establishment method and system after reconstruction of radio resource control connection fails
  • Fast connection establishment method and system after reconstruction of radio resource control connection fails
  • Fast connection establishment method and system after reconstruction of radio resource control connection fails

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Embodiment 1

[0057] In Embodiment 1, after the target cell receives the RRC connection re-establishment request, it sends the RRC connection re-establishment rejection signaling to the user terminal, and allocates uplink authorization for the user terminal, and the user terminal maintains the RRC connection state and continues to reside in the target cell , and notify the NAS layer that the RRC connection failed. After receiving the tracking area update request or service request returned by the NAS layer within the system setting time, the RRC connection establishment request is sent to the target cell on the uplink resources corresponding to the uplink authorization, and the target cell Allocating dedicated radio resources for the user terminal, configuring the dedicated radio resources, and notifying the target cell to complete the RRC connection.

[0058] Such as image 3 As shown, in the first embodiment, the method for quickly completing the establishment of the radio resource contro...

Embodiment 2

[0067] The solution of Embodiment 2 is the same as the application scenario of Embodiment 1, but the processing method in Embodiment 1 is a serial method, that is, the UE needs to receive the NAS tracking area update request or service request before it can initiate RRC to the target cell In the second embodiment, when the UE does not receive a tracking area update request or a service request from the NAS, it can initiate an RRC connection establishment request to the target cell. Such as Figure 4 As shown, the specific method includes the following steps:

[0068] Steps 400 to 402 are the same as steps 300 to 302;

[0069] Step 403, before the UE receives the tracking area update request or service request from the NAS layer, it directly sends an RRC connection establishment request on the uplink resource corresponding to the uplink authorization allocated by cell B for the UE;

[0070] Step 404, Cell B receives the UE's RRC connection establishment request, allocates ded...

Embodiment 3

[0074] Embodiment 3 is different from Embodiment 1 and Embodiment 2 in that the target cell does not need to allocate uplink authorization for the UE, and directly allocates dedicated radio resources for the user terminal, and the terminal device does not need to send an RRC connection to the target cell. The establishment request directly configures radio resources according to the dedicated radio resources allocated to the target cell, and establishes SRB1. Such as Figure 5 As shown, the specific method in embodiment three comprises the following steps:

[0075] Step 501, cell B receives the UE's RRC connection re-establishment request, and when it judges that the cell has no UE context and the current cell has idle resources that can be allocated to the UE, it directly allocates dedicated radio resources for the user terminal, and the allocation method can be Is any of the following 501a, 501b and 501c:

[0076] In step 501a, the cell B rejects the RRC connection reestab...

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Abstract

The invention discloses a fast connection establishment method and a system after reconstruction of radio resource control connection fails, and the method comprises the following steps: leading a user terminal to initiate the reconstruction of the radio resource control RRC connection to a target cell without context of the user terminal, leading the target cell to distribute special radio resources for the user terminal after the reconstruction of the RRC connection fails, leading the user terminal to keep the RRC connection state and completing the RRC connection establishment with the target cell through the special radio resources. The system comprises the user terminal and a target base station serving the target cell, wherein the target base station comprises a base station side RRC processing module, and the user terminal comprises a terminal side RRC processing module. The adoption of the method can effectively save cell selection time and random access time, realize the fast RRC connection establishment after the reconstruction of the RRC connection fails, improve the RRC connection establishment efficiency between the UE and the target cell and improve the user experience.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a method and system for establishing a fast connection after a Radio Resource Control (RRC) connection re-establishment fails. Background technique [0002] With the development of flat network architecture and the emergence of various high-speed broadband mobile access methods, the evolved wireless communication system can provide higher transmission rates, shorter transmission delays, and support third-generation mobile communications The mobility between the internal access systems of the Partnership Project (The 3rd Generation Partnership Project, referred to as 3GPP), and the mobility between the 3GPP access system and the non-3GPP access system, etc., have prompted the mobile communication system to propose the next generation Architecture concept. [0003] figure 1 It is a schematic diagram of a next-generation network architecture for a long-term evolution (L...

Claims

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Application Information

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IPC IPC(8): H04W48/08H04W48/18H04W76/02
Inventor 施小娟黄亚达杜忠达
Owner ZTE CORP