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Implementation method for automatic retransfer response channel indication channel of time division synchronous code division multi-address system

A technique of indicating channel and automatic retransmission, applied in multiplex code generation, error prevention/detection using return channel, etc.

Inactive Publication Date: 2012-01-11
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004]Since the E-HICH carries the uplink E-DCH HARQ indication information, it is hoped to ensure that the information is received correctly while saving downlink code channel resources, which cannot be achieved in the prior art Ensure that the information is received correctly and save downlink code channel resources

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  • Implementation method for automatic retransfer response channel indication channel of time division synchronous code division multi-address system
  • Implementation method for automatic retransfer response channel indication channel of time division synchronous code division multi-address system
  • Implementation method for automatic retransfer response channel indication channel of time division synchronous code division multi-address system

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Embodiment Construction

[0040] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0041] Such as figure 1 As shown, it is a schematic diagram of the E-HICH frame structure of the present invention. The present invention adopts the channelization code of SF=16, and the maximum bit capacity is 88 bits. Considering the structure of the spreading code for the first time, the first 80 bits are adopted. One-time spreading code, therefore, the present invention, in order to reduce the interference of the first half data symbol Data symbols to the training sequence Midamble and the training sequence Midamble to the second half data symbol Data symbols, the 4 symbols (8 bits) that are vacated are used as GP is placed equally between Midamble and symbol data.

[0042] Wherein, the first half of the data symbols and the second half of the data symbols both include 40 bits, that is, 320 chips; the training sequ...

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Abstract

The utility model discloses an implementation method of auto-retransmission answering indication channel of a time division synchronous code division multiple access (TD SDMA) system, which aims to solve the problem that the information can not be accurately received and the descending code channel resources can not be economically used in the prior art. The auto-retransmission answering indication channel of a time division synchronous code division multiple access (TD SDMA) system can be implemented in the following steps: the initial OVSF sequence is generated by the system; the data confirmed by the system to the link layer choose and amplify the corresponding initial OVSF; the data acquired by the initial frequency amplification are modulated and superimposed and the so acquired dataare amplified and scrambled for the second time by the system; the data obtained after the second frequency amplification and scrambling are arranged according to the given HICH time slot structure by the system. The utility model has the advantages that: the descending channel resources are economically used and a better receptivity of the UE is ensured, therefore, the HARQ indicating information of the E-DCH is efficiently and accurately received.

Description

technical field [0001] The invention relates to a time division synchronous code division multiple access system, in particular to a method for realizing an automatic retransmission indication channel of HSUPA (High Speed ​​Uplink Packet Access) in the time division synchronous code division multiple access system. Background technique [0002] In the third-generation mobile communication system, in order to provide higher-speed uplink packet services and improve spectrum utilization efficiency, 3GPP (3rd Generation Partnership Project) introduced High-Speed ​​Uplink Packet Access (HSUPA) into the specifications of WCDMA and TD-CDMA systems. : High Speed ​​Uplink Packet Access) feature, that is, the uplink enhanced feature. [0003] The HSUPA system is also called an enhanced uplink system (E-DCH). In the TD-CDMA system, the physical layer of the HSUPA system introduces the E-PUCH physical channel, which is used to transmit the E-DCH type CCTrCH (coded composite transport ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04J13/10
CPCH04L1/16
Inventor 刘虎芮华耿鹏张银成陈慧殷玮玮
Owner ZTE CORP