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Method and relay node for handling radio link failure

A wireless link failure, relay node technology, applied in the field of wireless link failure, method and relay node, relay, can solve the problem of failure to provide, to achieve the effect of increasing reliability and realizing detection

Active Publication Date: 2011-10-19
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 4. For LTE version 8 (Rel 8) UEs, the Relay cell is no different from the normal Rel 8 eNB cell
When RLF occurs on the Un interface, the RN's detection and determination of RLF and the corresponding processing methods are different from those of ordinary UEs. Appropriate handling in case of RLF

Method used

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  • Method and relay node for handling radio link failure
  • Method and relay node for handling radio link failure
  • Method and relay node for handling radio link failure

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Embodiment Construction

[0050] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0051] A method for dealing with wireless link failure provided by the present invention, the core idea of ​​which is: RN detects the RLF of the Un interface according to the preset RLF detection and judgment conditions; RRC_IDLE state and re-establish the RRC connection of the Un interface through random access operation again, or choose to restore the RRC connection of the Un interface through the RRC connection reconstruction procedure in the RRC_Connected state.

[0052] Wherein, the RLF detection and judgment condition is: continuous out-of-synchronization indication, or the RLC layer indicates that the PDU has reached the maximum number of retransmissions, or the MAC layer has indicated that the scheduling request (SR, Scheduling Request) has reached the maximum number of transmissions.

[0053] The RN detects ...

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Abstract

The invention discloses a method for handling radio link failure, comprising the following steps that: a relay node (RN) detects RLF (radio link failure) of an Un interface according to a preset RLF detection judging condition; the RN chooses to return back to a radio resource control (RRC) idle state when detecting that the UN interface has RLF, and rebuilds a RRC connection of the Un interface performing a random access operation again, or chooses to recover the RRC connection of the Un interface through a RRC connection rebuilding program under a RRC connection state. The invention further discloses a relay node. With the method and the relay node provided by the invention, effective detection on the RLF of the Un interface by the RN is implemented, and the RLF is handled well.

Description

technical field [0001] The invention relates to relay technology in the field of wireless communication, in particular to a method and a relay node for dealing with wireless link failure. Background technique [0002] In the wireless communication network, some areas cannot be connected to the wired backbone network of ordinary base stations due to terrain or environmental reasons, or there are temporary wireless coverage requirements for some coverage dead spots or hotspot areas, but the cost of setting up wired connection base station equipment is relatively high . For these wireless coverage requirements, wireless relay (Relay) equipment can usually be used to solve them, such as figure 1 As shown, the Relay device is connected to the existing network base station through wireless signals, and provides services to UEs within its own coverage area, so as to achieve coverage expansion, reduce coverage dead spots, and transfer loads in hotspot areas. [0003] Wireless rela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/04H04W74/08H04W76/02
Inventor 王冠宙邓云陈思
Owner ZTE CORP
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