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Wireless link failure recovery method based on path anticipation in mobile relay

A wireless link failure and mobile relay technology, applied in wireless communication, electrical components, connection management, etc., can solve problems such as long measurement and signaling interaction time, reselection, handover and access cannot be fully completed, and achieve Enhance security and optimize the effect of RLF recovery process

Inactive Publication Date: 2012-10-03
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the high-speed mobile environment, due to the deterioration of the link quality, the communication process of the terminal user such as cell residence, access, reselection and handover will take longer for measurement and signaling interaction, while the conventional macro cell coverage The main consideration is the low-to-medium speed scenario, and the reselection, handover, and access processes with large delays may not be fully completed within the coverage of a single base station site

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  • Wireless link failure recovery method based on path anticipation in mobile relay
  • Wireless link failure recovery method based on path anticipation in mobile relay
  • Wireless link failure recovery method based on path anticipation in mobile relay

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Embodiment Construction

[0033] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples serve to illustrate the present invention, but do not limit the scope of the present invention.

[0034] like image 3 As shown, the wireless link failure recovery method based on path prediction in the mobile relay of the present invention includes the following steps:

[0035] S101. After the mobile relay detects that the wireless link fails, determine the current location of the mobile relay;

[0036] S102, the mobile relay reports the RLF to the source DeNB, carrying the current location information;

[0037] S103. The source DeNB uses a path prediction method to estimate the cell location where the mobile relay is located after the RLF is restored;

[0038] S104, the source DeNB performs RLF recovery according to the estimated cell location where the mobile relay is located af...

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Abstract

The invention provides a wireless link failure recovery method based on path anticipation in a mobile relay. The wireless link failure recovery method comprises the following steps that: S101, the mobile relay determines the current position of the mobile relay after detecting that a wireless link is failed; S102, the mobile relay reports an RLF (Radio Link Failure) with current position information to a source DeNB (Donor evolved Node B); S103, the source DeNB estimates the position of a cell at which the mobile relay is located after recovering the RLF by using a path anticipation manner; and S104, the source DeNB recovers the RLF according to the position of the cell at which the mobile relay is located after the estimated RLF is recovered. By utilizing the wireless link failure recovery method provided by the invention, the security of a backhaul link of the mobile relay can be enhanced through an optimal RLF recovery flow.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a wireless link failure recovery method based on path prediction in a mobile relay. Background technique [0002] At the 3GPPRAN253 plenary meeting, a new research project was added for the formulation of the R10 / R11 standard: Mobile Relay (Mobile Relay), focusing on research in high-speed mobile environments such as high-speed railways and highways. , User Equipment) obtains stable signal access by directly connecting to the mobile relay while avoiding unnecessary user delay and user experience degradation caused by frequent switching. Due to standardization time and some technical reasons, 3GPP finally decided that in R10, mobile relay was given a relatively low priority and was not standardized in R10. [0003] In order to overcome the penetration loss of the car body, the mainstream candidate solution proposed by Huawei and other companies is to introduce a backhaul use...

Claims

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Application Information

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IPC IPC(8): H04W36/30H04W74/08H04W76/02
Inventor 田辉张平林尚静胡铮
Owner BEIJING UNIV OF POSTS & TELECOMM