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Method and system for implementing mixed self-adapting retransmission

An adaptive and retransmission technology, which is applied in transmission control/equalization, communication between multiple stations, error prevention/detection using the return channel, etc., can solve the problem of increasing system power consumption, consuming large transmit power, reducing System performance and other issues to achieve the effect of reducing power consumption

Active Publication Date: 2011-09-07
TD TECH COMM TECH LTD
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  • Application Information

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Problems solved by technology

In this way, due to the multiplexing structure, the E-HICH shared physical channel has the superimposed power of multiple ACK / NACKs of different user terminals, and the base station can only perform spread spectrum processing on the superimposed ACK / NACK. However, it is impossible to perform processing to reduce power consumption, resulting in the ACK / NACK sent by the E-HICH shared physical channel consuming a large amount of transmit power in one time slot. For example, using an OVSF spreading code to multiplex 4 ACK / NACK will consume nearly 90% of the power
[0012] It can be seen that in the prior art, when implementing the uplink HARQ process, the method of sending multiple ACK / NACKs of different user terminals through the E-HICH shared physical channel will greatly increase the power consumption of the system, thereby reducing the performance of the system

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  • Method and system for implementing mixed self-adapting retransmission
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  • Method and system for implementing mixed self-adapting retransmission

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Embodiment Construction

[0079] The invention proposes a method for realizing hybrid adaptive retransmission. In this method, a dedicated E-HICH channel is assigned to each user terminal supporting HSUPA; the base station performs power reduction processing and spread spectrum processing on the ACK / NACK information of the current user terminal supporting HSUPA; the base station passes the current user terminal The terminal-dedicated E-HICH channel sends the processed ACK / NACK information to the current user terminal.

[0080] Correspondingly, the present invention also proposes a system for realizing hybrid adaptive retransmission. figure 2 It is a structural schematic diagram of the system of the present invention. see figure 2 , the system proposed by the present invention mainly includes: a base station and a user terminal supporting HSUPA, wherein the base station is used to allocate an E-HICH channel dedicated to the user terminal for each user terminal supporting HSUPA, and generate a channe...

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Abstract

The present invention discloses a method and a system for realizing HARQ; the system comprises a base station and a user terminal which supports HSUPA. The method comprises that every user terminal which supports HSUPA is collocated with a special E-HICH; the base station implements the treatment of reducing the energy consumption and spreading frequency on the ACK / NACK information of the presentuser terminal; the base station issues the processed ACK / NACK information to the present user terminals through the special E-HICH. The present invention can implement the process of reducing the energy consumption on the ACK / NACK information of the user terminal which greatly reduces the energy consumption of the system and promotes the system function.

Description

technical field [0001] The present invention relates to uplink high-speed data transmission (HSUPA) technology, in particular to a method and system for realizing hybrid adaptive retransmission (HARQ). Background technique [0002] The Universal Terrestrial Mobile Telecommunications System (UMTS TDD) system is a system that utilizes HSUPA technology to realize uplink data transmission. In order to ensure the correct reception of user data, in the UMTS TDD system, the HARQ technology in the HSUPA technology is adopted. Moreover, in order to conveniently implement a complete uplink HARQ process, in the UMTS TDD system, independent physical channels are also defined, including enhanced grant channel (E-AGCH), enhanced uplink physical channel (E-PUCH) and enhanced hybrid automatic A retransmission request indication channel (E-HICH), wherein both the E-AGCH and the E-HICH are shared physical channels. [0003] figure 1 It is a flow chart of implementing uplink HARQ in the pri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04B7/26H04B7/005
CPCY02D30/70
Inventor 沈东栋王浩然宋爱惠李蓉
Owner TD TECH COMM TECH LTD