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Correct/wrong response message mapping method and terminal

一种错误应答、应答消息的技术，应用在通过分集接收来防止/检测错误、使用返回通道进行错误预防/检测、防止差错等方向，能够解决ACK/NACK应答消息理解错误、错误等问题

Active Publication Date: 2011-01-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no specific scheme for the mapping relationship between the 6-bit feedback information and each configured component carrier.
[0013] Therefore, if the mapping relationship between the ACK / NACK response message and the feedback bit, or the corresponding relationship between the ACK / NACK response message and the HARQ-ACK state in the mapping table, the base station and the terminal have different understandings, the base station will feedback the UE The ACK / NACK response message is misunderstood, resulting in an error

Method used

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  • Correct/wrong response message mapping method and terminal
  • Correct/wrong response message mapping method and terminal
  • Correct/wrong response message mapping method and terminal

Examples

Experimental program
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Effect test

Embodiment 1

[0068] Such as figure 2 As shown, in the FDD system, the base station configures four downlink component carriers {DL CC#0, DL CC#1, DL CC#2, DL CC#3} for the UE, and DL CC#0 / 1 / 3 all need 2-bit ACK / NACK is fed back, while DL CC#2 needs to feed back 1-bit ACK / NACK. According to the number of downlink component carriers (or cells) configured by the base station for the terminal and the transmission mode of each configured downlink component carrier, the UE determines the number of bits of the correct error response message that needs to be fed back The ACK / NACK response message corresponding to the two codeword streams of DL CC#0 is {A, B}, the ACK / NACK response message corresponding to the two codeword streams of DL CC#1 is {C, D}, and the DL CC#1 The corresponding ACK / NACK response message of #2 is {E}, and the ACK / NACK response message corresponding to the two codeword streams of DL CC#3 is {F, G}, where A / B / C / D / E / F ∈ {ACK, NACK}, when the terminal does not detect the phy...

Embodiment 2

[0072] Such as image 3 As shown, in the TDD system, the base station configures four downlink component carriers {DL CC#0, DL CC#1, DL CC#2, DL CC#3} for the UE, and DL CC#0 / 1 / 3 all need Feedback 2-bit ACK / NACK, while DL CC#2 needs to feed back 1-bit ACK / NACK, and assume that a certain uplink subframe needs to feed back 3 downlink subframes #n, #n+1 and #n+2 at the same time The ACK / NACK response message of the downlink subframe. Assuming that the base station configures that the terminal does not need to perform logical AND of correct and error response messages between codeword streams, the UE configures the number of downlink component carriers (or cells) for the terminal according to the base station, the configured uplink and downlink proportional relationship, and each configured downlink component The transmission mode of the carrier, which determines the number of bits of the correct error response message that needs to be fed back The feedback status of each compo...

Embodiment 3

[0076] Such as Figure 4 As shown, in the TDD system, the base station configures four downlink component carriers {DL CC#0, DL CC#1, DL CC#2, DL CC#3} for the UE, and DL CC#0 / 1 / 3 all need Feedback 2-bit ACK / NACK, while DL CC#2 needs to feed back 1-bit ACK / NACK, and assume that a certain uplink subframe needs to feed back 3 downlink subframes #n, #n+1 and #n+2 at the same time The ACK / NACK response message of the downlink subframe. Assuming that the base station configures the logical AND of correct and error response messages between the codeword streams for the terminal, the UE configures the number of downlink component carriers (or cells) for the terminal according to the base station, the configured uplink and downlink proportional relationship, and each configured downlink component carrier transmission mode, determine the number of bits L=N.M=12 of correct and error response messages that need to be fed back. The feedback state of each component carrier on the codewor...

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Abstract

The invention discloses a correct / wrong response message mapping method and a terminal. The method comprises the steps that: the terminal determines the bit number L of a correct / wrong acknowledged / non-acknowledged (ACK / NACK) response message required to be fed according to preset conditions, wherein the preset conditions comprise at least one of the number of downlink component carriers or cells configured to the terminal by a base station and the transmission mode of each downlink component carrier; and the terminal maps the ACK / NACK response message into L bits. With the correct / wrong response message mapping method and the terminal, the ACK / NACK response message can be processed correctly.

Description

technical field [0001] The present invention relates to the communication field, in particular to a correct / error response message mapping method and a terminal. Background technique [0002] In a Hybrid Automatic Repeat Request (HARQ for short) mode, the codeword sent by the originating end can not only detect errors, but also have certain error correction capabilities. After receiving the codeword, the decoder at the receiving end first checks the error situation. If it is within the error correction capability of the codeword, it will automatically correct the error. If there are too many errors, it exceeds the error correction capability of the codeword, but it can detect the error. , the receiving end sends a decision signal to the sending end through the feedback channel, requesting the sending end to resend the information. In the Orthogonal Frequency Division Multiplex (OFDM for short) system, the correct / wrong response (Acknowledged / Non-acknowledged, ACK / NACK for s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/16
CPCH04L5/001H04L1/1607H04W72/042H04L5/003H04L1/06H04L1/1861H04W72/23
Inventor 梁春丽戴博杨维维朱鹏
Owner ZTE CORP
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