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Method and device for transmitting uplink control information

A technology for controlling information and confirming information, applied in the direction of transmission system, digital transmission system, multiple use of transmission path, etc.

Active Publication Date: 2012-10-03
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

How UCI is transmitted on the PUSCH of multiple codewords is a new problem, and there is no related prior art at present

Method used

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  • Method and device for transmitting uplink control information
  • Method and device for transmitting uplink control information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] see figure 2 , this embodiment provides a method for transmitting uplink control information, which divides a UCI into multiple parts and then transmits them with multiple codewords, specifically including:

[0039] 201: When transmitting UCI on the PUSCH of multiple codewords, for one UCI to be transmitted, divide the UCI into multiple parts, the number of the multiple parts is equal to the number of the multiple codewords, and each The portion corresponds to one of the codewords.

[0040] For example, there are two codewords: codeword 1 and codeword 2, and one UCI is divided into two parts, UCI1 and UCI2, wherein UCI1 corresponds to codeword 1, and UCI2 corresponds to codeword 2.

[0041] Wherein, the method of dividing one UCI into multiple parts is not specifically limited in this embodiment of the present invention. The lengths of any two parts among the divided parts may be the same or different.

[0042] 202: Map each divided part of the UCI to its correspond...

Embodiment 2

[0072] Since a UCI is divided into multiple parts for encoding in Embodiment 1, compared to LTE R8, the implementation complexity is increased, and the performance of UCI is limited by the performance of multiple parts, and the probability of UCI being correctly received will be lower than The probability that either part is received correctly. Therefore, see Image 6 , this embodiment provides another method for transmitting uplink control information, using a method different from that of Embodiment 1, dividing the UCI after channel coding into multiple parts and then transmitting them with multiple codewords, specifically including:

[0073] 601: When UCI is transmitted on the PUSCH of multiple codewords, for a UCI to be transmitted, perform channel coding on the UCI;

[0074] Specifically, the process of channel coding the UCI is as follows:

[0075] 1) Calculate the number Q' of the modulation symbols occupied by the UCI on each codeword. If the above UCI is HARQ-ACK or...

Embodiment 3

[0098] Since the sending and receiving process of LTE R8 UCI transmission on PUSCH needs to be modified in embodiment 2, it is not conducive to reuse the algorithm of LTE R8, and the formula for calculating the number of modulation symbols occupied by UCI and the number of bits after UCI channel coding needs to be modified in LTE R8 , that is, formulas (4) and (5), usually, the number of original information bits of RI and HARQ-ACK is small, such as 1~2bit, at this time, in order to allow it to be transmitted with multiple codewords, additional repetitions may be required Coding, resulting in unnecessary waste of resources. In order to solve the above problems, this embodiment provides another method for transmitting uplink control information, which is different from the methods in Embodiments 1 and 2, and uses mapping a UCI to a codeword for transmission, see Figure 8 , including:

[0099] 801: When UCI is transmitted on the PUSCH of multiple codewords, for one UCI to be t...

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Abstract

The invention discloses a method and a device for transmitting uplink control information. The method comprises the following steps: when uplink control information UCI is transmitted on a physical uplink shared channel PUSCH of multiple digits, determining the digit corresponding to the UCI in the multiple digits according to a predetermined rule; and mapping the UCI to the corresponding digit to transmit. The device comprises a determining module and a transmitting module. According to the invention, the problem of transmitting the UCI on the PUSCH of the multiple digits is solved, and the method and the device are easily realized on the basis of LTE R8 without additionally adding many standardized jobs.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and device for transmitting uplink control information, in particular to a method and device for transmitting uplink control information on a physical uplink shared channel of multiple codewords. Background technique [0002] In the LTE (Long Term Evolution, Long Term Evolution) R8 wireless communication system, in order to support technologies such as dynamic scheduling, downlink MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) transmission and hybrid automatic retransmission, terminals need to pass PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) and PUSCH (Physical Uplink Share Channel, Physical Uplink Shared Channel) feed back a variety of UCI (Uplink Control Information, uplink control information) to the base station, such as channel quality indication, coding matrix indication and for mixing Acknowledgments...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L5/00
Inventor 吕永霞成艳
Owner HUAWEI TECH CO LTD
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