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Method for reinforcing ascending link and implementing fast switch-over

An enhanced uplink, enhanced uplink technology, applied in the direction of radio/induction link selection arrangement, multiplexing communication, code division multiplexing system, etc., to achieve the effect of improving switching speed

Active Publication Date: 2008-08-20
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This delay is unacceptable for enhanced uplink services, especially for the current application scenarios of real-time services such as VoIP (Voice over Internet Protocol) and video.

Method used

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  • Method for reinforcing ascending link and implementing fast switch-over
  • Method for reinforcing ascending link and implementing fast switch-over

Examples

Experimental program
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Embodiment Construction

[0044] The present invention provides a method for improving the switching speed of the E-DCH link in the HSUPA scheduling service. When the user performs the high-speed uplink packet access scheduling service and the E-DCH serving cell changes, the switching command of the upper layer of the network to the UE includes The information related to the E-RUCCH random access resource of the target cell enables the UE to initiate a scheduling request immediately after performing uplink synchronization in the new cell after handover, without reading the system information of the new cell.

[0045] The following takes the TD-SCDMA system as an example to introduce.

[0046] Step 1: The network side makes a cell handover decision for the UE based on the UE’s measurement information, and determines that the UE can perform enhanced uplink access services in the target cell. The network side includes the random number of the target cell in the handover command sent to the UE. Access reso...

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PUM

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Abstract

The present invention provides a rapid switch method for enhancing uplink which is used in time division synchronous code division multiple access system and processes district switch in special channel state UE. The method includes steps: (a) when network side determines UE processing enhancing uplink in target district, random access resource information of target district is carried in switch command send to UE; (b) UE rebuilds wireless link in target district, if buffer area corresponding to enhancing uplink wireless carrier has data to send, UE generates enhancing uplink link random access according with random access resource information carried by switch command, and requests scheduling resource to base station Node B. The method makes UE knowing random access resource of target district in advance according with random access resource information of target district carried by switch command, and generates E-RUCCH access rapidly after UE link reconfiguration to new district. The method can avoid UE from reading district broadcast information and obtaining random access resource information, and can improve switch speed.

Description

technical field [0001] The invention relates to a method for reducing switching time delay in a time-division synchronous code division multiple access system, in particular to a method for enhancing an uplink in a time-division synchronous code division multiple access system to realize fast hard handoff. Background technique [0002] In March 2006, 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) passed the project application for TD-SCDMA (Time Division Synchronous Code Division Multiple Access) system enhanced uplink. Enhanced uplink is generally called HSUPA (High Speed ​​Uplink Packet Access, High Speed ​​Uplink Packet Access), which aims to improve the efficiency of uplink through advanced technology to effectively support web browsing, video, multimedia information and other information based on IP business. [0003] The UE using the HSUPA service works in the CELL DCH (Dedicated Channel State) state. A new transport channel E-DCH (Enha...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04J13/02H04W28/06H04W36/00H04W72/14
CPCH04W36/0055H04W36/02H04W72/23H04W36/06
Inventor 陈慧
Owner ZTE CORP
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