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Method, system and apparatus for retransmitting preamble signature

A leading and transmitting module technology, applied in the field of communication, can solve problems such as high blocking probability, achieve the effect of reducing blocking probability and improving efficiency

Active Publication Date: 2011-09-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when a UE initiates the enhanced RACH random access procedure, there is a high blocking probability

Method used

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  • Method, system and apparatus for retransmitting preamble signature
  • Method, system and apparatus for retransmitting preamble signature
  • Method, system and apparatus for retransmitting preamble signature

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Embodiment Construction

[0018] An embodiment of the present invention provides a method for retransmitting a preamble signature. Through the embodiment of the present invention, a base station returns a retry acquisition indication to a UE, and the UE transmits a preamble signature according to the retry acquisition indication. The UE in the embodiment of the present invention can retransmit the preamble signature according to the retry acquisition indication, thereby initiating the enhanced RACH random access process, improving the efficiency of E-DCH resource allocation, significantly reducing the blocking probability, and at the same time, enhancing the RACH random access process Latency can also be significantly reduced. The base station mentioned in the embodiment of the present invention may be an entity such as a NodeB.

[0019] Such as image 3 As shown, it is a flowchart of a method for retransmitting a preamble signature in an embodiment of the present invention, including the following st...

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Abstract

The embodiment of the invention discloses a method for transmitting a preamble signature once again, which comprises that: a retry capture instruction returned from a base station is received by a user facility UE, which is generated by the base station when allocation of strengthened dedicated transmission channel E-DCH resource corresponding with the preamble signature transmitted last time by the UE is finished; the preamble signature is transmitted once again by the UE according to the retry capture instruction. Through the embodiment of the invention, the retry capture instruction is returned to the UE by the base station, and the preamble signature is transmitted once again by the UE according to the retry capture instruction. When a strengthened RACH random access process is initiated by the UE, efficiency of E-DCH resource allocation is improved, thus obviously lowering blocking probability; meanwhile, time lapse of the strengthened RACH random access process can be lowered remarkably.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, system and device for retransmitting a preamble signature. Background technique [0002] The physical random access process is triggered by a MAC (Medium Access Control, Media Access Control) layer request. Before the physical random access process starts, the physical layer needs to receive the following parameter information from the RRC (Radio Resource Control, radio resource control) layer: preamble scrambling code, message length (10ms or 20ms), AICH (Acquisition Indicator Channel, acquisition indication channel ) transmission timing, each ASC (Access Service Class, access service level) available signature set and RACH (Random Access Channel, random access channel) subchannel set, power climbing step size, preamble maximum retransmission times, preamble initial power, power offset between the last transmitted preamble and the control part of the ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/14H04W74/08
CPCH04W74/06H04W74/08H04W72/04H04W28/04
Inventor 贺传峰
Owner HUAWEI TECH CO LTD