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Method and system for enhancing radio link failure recovery based on optimal reconstruction target cell selection

A technology of radio link failure and target cell, applied in the field of radio link failure recovery enhancement, can solve the problem of not being able to guarantee the context of the UE ready, unable to guarantee a suitable cell, etc., so as to reduce network signaling overhead and resources. The effect of reservation operation and improving spectrum utilization

Active Publication Date: 2017-01-11
CHONGQING UNIV OF POSTS & TELECOMM
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AI Technical Summary

Problems solved by technology

This technology can neither guarantee that the target cell has prepared the context of the UE, nor can it guarantee that the prepared cell selected by the UE is a suitable cell

Method used

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  • Method and system for enhancing radio link failure recovery based on optimal reconstruction target cell selection
  • Method and system for enhancing radio link failure recovery based on optimal reconstruction target cell selection
  • Method and system for enhancing radio link failure recovery based on optimal reconstruction target cell selection

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Embodiment Construction

[0044] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0045] figure 1 It is a flow chart of the first embodiment of the RLF fast recovery method provided by the present invention. In this embodiment, the mobile terminal is located in a radio link failure RLF-prone area. In the radio link failure RLF frequent area, a macro cell macrocell and several micro cells picocells provide wireless communication services. The current access cell of the mobile terminal is a picocell under the coverage of the macro cell.

[0046] The process for the mobile terminal to apply the RLF recovery enhancement method during the movement may specifically include:

[0047] Step A1, the current serving base station of the mobile terminal continuously obtains the signal quality measurement of the mobile terminal to the base station, and analyzes whether the mobile terminal needs to start performing handover measurem...

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Abstract

The invention discloses a wireless link failure recovery enhancing method and device based on optimal reconstruction target cell selection, and belongs to the technical field of mobile communication. The wireless link failure recovery enhancing method includes the steps of determining a first forecasting target cell and a second forecasting target cell according to continuously-measured-and-calculated RSRP gradient values of adjacent base stations, obtaining prepared cells according to a switching command of a service base station, ranking a prepared cell list according to the priority based on the proximity of base stations of the prepared cells and movement paths, and early terminating a T310 timer based on a switching executing event. According to the wireless link failure recovery enhancing method and device, the same probability of the forecasting target cells and the targets cells and the frequency spectrum efficiency are improved, the network signaling cost is reduced, and the signaling process is optimized; meanwhile, the query efficiency of the RRC connection reconstruction target cells in the prepared cell list is improved, namely the reconstruction success rate is improved, and the break period is shortened.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and relates to a radio link failure restoration enhancement method and device based on the selection of the best reconstruction target cell. Background technique [0002] To adapt to the rapidly growing mobile data traffic, operators have deployed more infrastructure to bring cellular networks closer to UEs, thereby increasing spectrum efficiency and spatial reuse. Faced with this situation, the 3GPP organization proposed a heterogeneous small cell network composed of macro cells and low-power nodes (such as picocells, femtocells, relaynodes). However, according to the simulation results of mobile robustness in heterogeneous small cell networks proposed by 3GPPRAN2, the handover performance in heterogeneous networks is far from that of traditional homogeneous networks. The handover failure rate HOF and the ping-pong handover rate Ping -pong greatly increased. The simulation results...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02
Inventor 陈前斌刘伊莎唐伦
Owner CHONGQING UNIV OF POSTS & TELECOMM
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