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Method for implementing automatic retransmission answering indication signal channel of time division synchronization code division multiple access system

An automatic retransmission and channel indication technology, which is applied in the direction of code division multiplexing system, transmission system, multiplexing communication, etc., to achieve the effects of correct reception, saving downlink channelization code resources, and good reception performance

Inactive Publication Date: 2008-02-27
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, save downlink code channel resources, and at the same time ensure that the TPC (Transmit Power Control) and SS (Synchronization Shift) of the UE (User Equipment) are synchronized Offset) is correctly received, but in the prior art it is impossible to ensure that these information are received correctly and save downlink code channel resources

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  • Method for implementing automatic retransmission answering indication signal channel of time division synchronization code division multiple access system
  • Method for implementing automatic retransmission answering indication signal channel of time division synchronization code division multiple access system

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Embodiment Construction

[0036] The core idea and various preferred embodiments of the present invention will be further described and illustrated in detail below with reference to the accompanying drawings.

[0037] As shown in Figure 1, 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 first spreading code comprehensively, 64 The first spreading code of bit, therefore, in order to reduce interference, the present invention provides SS and TPC, the 24 bits that are vacated are respectively done SS and TPC to 4 or 6 UEs (totally 8*2=16 bits ), and the remaining 8 bits are respectively placed between the data symbol and the training sequence (midamble code) as a guard interval. Wherein, both the first half of the data symbols and the second half of the data symbols include 32 bits, that is, 256 chips; the training sequence includes 144 ...

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Abstract

This invention discloses a method for realizing automatic re-transmission of response instruction channels of TD-SCDMA system including the following steps: the system generates a first time of spread-spectrum code sequence, selects its code corresponding to data confirmed by the link layer, caries out first time of spectrum-spread and distributes TPS and SS pair for user devices to modulate and overlap the data got from the first spectrum-spread and carries out second time of spread-spetrum and harass to the overlapped data to be arranged according to the set HICH time slot structure and plug the TPS and SS at corresponding positions.

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 (E-DCH Physical Uplink Channel) physical channel, which is used to transmit the E-DCH type of ...

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Application Information

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IPC IPC(8): H04Q7/38H04L1/18H04B7/26H04J13/02H04B1/707
CPCH04B1/707
Inventor 刘虎耿鹏芮华张银成殷玮玮
Owner ZTE CORP