Method, communication system and user device for enhancing random access

A technology for random access, user equipment, applied in wireless communication, error prevention/detection using return channel, electrical components, etc., can solve the problem of inaccurate transmission power, synchronization process cannot be completed as soon as possible, and the quality of initial uplink control channel deteriorates and other issues to ensure the correctness

Active Publication Date: 2009-11-04
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In this way, the initial uplink transmission power will be inaccurate, causing the quality of the initial uplink control channel to deteriorate, so that the uplink synchronization pro

Method used

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  • Method, communication system and user device for enhancing random access
  • Method, communication system and user device for enhancing random access
  • Method, communication system and user device for enhancing random access

Examples

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Example Embodiment

[0022] The embodiment of the invention discloses a method for enhancing random access. When the Node B controls the enhanced random access initiated by the UE, the UE accesses through the power climbing process, which makes the initial transmission power of the UE in uplink transmission more accurate, which is conducive to the accuracy of uplink transmission information and the completion of uplink synchronization as soon as possible. The method for enhancing random access of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] figure 1 It is a schematic flowchart of an embodiment of an enhanced random access method of the present invention. Such as figure 1 As shown, the method includes:

[0024] 101. The Node B sends an HS-SCCH order.

[0025] In this step, the HS-SCCH order sent by the Node B carries the user equipment identifier UEID and E-DCH resource identity (E-DCH resource number) or UE ID and access preamble sign...

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Abstract

The invention relates to the field of communication, and discloses a method for enhancing random access. In the method, UE receives high-speed downlink shared control channel command HS-SCCH order transmitted by a base station node Node B, and the UE corresponding to UE ID carried by the HS-SCCH launches enhanced uplink access with rising power according to an access leading signature corresponding to an uplink transmission resource number carried by the received HS-SCCH order or an access leading signature corresponding to an access leading signature number. Meanwhile, the invention also discloses a communication system and the UE. With the method, the communication system and the UE, the invention can ensure that initial transmission power of the UE is more accurate during uplink transmission, and is beneficial to accurate transmission of uplink transmission and quick completion of uplink synchronization.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for enhancing random access, a communication system and user equipment. Background technique [0002] With the development of wireless communication technology, 3GPP (3rd Generation Partnership Project Wideband Code Division Multiple Access, Third Generation Partnership Project) introduced enhanced Random access is a new feature. Among them, the general process of enhanced random access includes random access preamble and resource allocation phase, conflict resolution phase, E-DCH (Enhanced Dedicated Channel, Enhanced Dedicated Channel) data transmission phase and release phase. [0003] With this new feature, UE (User Equipment, user equipment) in CELL_FACH state can receive downlink data through HS-DSCH (High Speed ​​Downlink Shared Channel, high speed downlink shared channel). [0004] In 3GPP WCDMA Release 7, the feature of downlink HS-DSCH transmission was introd...

Claims

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Application Information

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IPC IPC(8): H04W74/08H04L1/16
Inventor 王宗杰贺传峰马洁
Owner HUAWEI TECH CO LTD
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