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Synchronous non-self-adapting hybrid automatic repeat request method and system

A hybrid automatic retransmission, non-adaptive technology, applied in the field of communication, can solve the problems of small combining gain, increased number of retransmissions, and inability to fully reflect the retransmission gain, so as to increase system overhead and improve efficiency.

Active Publication Date: 2010-01-06
ZTE CORP
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  • Abstract
  • Description
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Problems solved by technology

[0006] Considering that the retransmission gain brought by synchronous non-adaptive HARQ cannot be fully reflected in the case of slow channel changes, resulting in an increase in the number of retransmissions and a small combination gain, the present invention is made. For this reason, the present invention The main purpose of the invention is to provide a synchronous non-adaptive hybrid automatic repeat transmission method and system to solve the above-mentioned problems in related technologies

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  • Synchronous non-self-adapting hybrid automatic repeat request method and system
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  • Synchronous non-self-adapting hybrid automatic repeat request method and system

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Embodiment Construction

[0040] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0041] Method embodiment

[0042] According to an embodiment of the present invention, a synchronous non-adaptive hybrid automatic retransmission method is provided, figure 1 Is a flowchart of a synchronous non-adaptive hybrid automatic retransmission method according to an embodiment of the present invention, such as figure 1 As shown, including the following processing:

[0043] Step S102: The sending end sends a data packet to the receiving end, where the sending end is a base station and the receiving end is a terminal, or the sending end is a terminal and the receiving end is a base station;

[0044] Step S104, the sending end receives an error response message (NAK message) ...

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Abstract

The invention discloses a synchronous non-self-adapting hybrid automatic repeat request (HARQ) method and a system. The method comprises: a transmitting end sends a data packet to a receiving end; the transmitting end receives a feedback error response message when error occurs at the cyclic redundancy check on the data packet by the receiving end; the transmitting end adjusts the transmitting bit of an HARQ data packet and transmits the HARQ data packet to the receiving end. By the above technical scheme, extra frequency diversity and time diversity can exist between the HARQ data packet and the initial transmission data packet so as to bring extra combined gain; under the condition of increasing no system cost, HARQ retransmission efficiency can be further improved.

Description

Technical field [0001] The present invention relates to the field of communications, and in particular, to a synchronous non-adaptive hybrid automatic retransmission method and system. Background technique [0002] Hybrid Automatic Retransmission Request (Hybrid Automatic Retransmission Request, abbreviated as HARQ) is a technology jointly used by automatic retransmission (Automatic Retransmission Request, abbreviated as ARQ) and forward error correction coding (Forward Error Correction, abbreviated as FEC). HARQ contains error correction and error detection check bits in each data packet sent. If the number of error bits in the received packet is within the error correction capability, the error is corrected by itself; when the error is serious and the FEC error correction capability has been exceeded, the sender is notified to retransmit. [0003] Synchronous non-adaptive HARQ means that the transmission (retransmission) of a HARQ process occurs at a fixed time. Since the receiv...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04L1/00
Inventor 方惠英曲红云王军虎
Owner ZTE CORP
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