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Method for sending uplink control information on basis of PUSCH transmission and system thereof

A technology for controlling information and sending methods, applied in transmission systems, digital transmission systems, radio transmission systems, etc., can solve problems such as not being proposed, and achieve the effect of reliable performance

Active Publication Date: 2010-12-22
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0029] However, in the LTE-A system where the PUSCH transmission adopts the form of spatial multiplexing, how to transmit the uplink control information such as RI, W1 and W2 on the PUSCH transmission layer, and which codeword stream to select for transmission, there is no such thing in the prior art. come up with a feasible solution

Method used

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  • Method for sending uplink control information on basis of PUSCH transmission and system thereof
  • Method for sending uplink control information on basis of PUSCH transmission and system thereof
  • Method for sending uplink control information on basis of PUSCH transmission and system thereof

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Embodiment 1

[0095] In this embodiment, the rank indication information (RI) and the precoding matrix W1 of the first codebook are jointly encoded (the joint encoding belongs to information source encoding).

[0096] Please also refer to Figure 4 , the flow process of the method of this embodiment includes:

[0097] In step 1, the UE jointly encodes the rank indication information to be sent and the information of the precoding matrix in the first codebook to obtain a joint encoding index;

[0098] The joint encoding of RI and W1 is to uniformly encode RI and W1, and each joint encoding index uniquely indicates a precoding matrix in the first codebook, and different index intervals uniquely indicate different values ​​of RI, allowing a small number of encoding indices to represent default. The joint coding index of RI and W1 needs n bits to represent, and n is a positive integer greater than or equal to 1.

[0099] The following table is an example of a joint encoding of RI and W1:

...

Embodiment 2

[0130] This embodiment is basically the same as Embodiment 1. The difference lies in that the position of bit repetition is different. The bit repetition in Embodiment 1 occurs after channel coding, while the bit repetition in this embodiment occurs before channel coding. Bits are bit-repeated.

[0131] Please refer to Figure 4 , assuming that the current total number of uplink layers is r, first perform bit repetition on the source bits of the joint coding index of RI and W1 to obtain r repeated joint coding indices, and then perform channel coding on the r repeated joint coding indices respectively, r repeated control information codeword streams are obtained, and for subsequent processing, refer to Step 3 and Step 4 of Embodiment 1. When W2 is included in the PMI information, the processing when W2 is sent is also the same as that in Embodiment 1.

[0132] The transmission system of this embodiment is basically the same as the transmission system of Embodiment 1. The dif...

Embodiment 3

[0134] In this embodiment, the rank indication information and the information of the precoding matrix W1 of the first codebook C1 are not jointly encoded.

[0135] Please also refer to Figure 5 , the flow process of the method of this embodiment includes:

[0136] Step 1: Concatenate the index of the precoding matrix W1 in the n1 first codebooks to be sent, the index of the precoding matrix W2 in the n2 second codebooks, and the n3 CQI information source bits and then perform channel coding to obtain A control information codeword stream, wherein, n1 is a positive integer greater than or equal to 1, and n2 and n3 are integers greater than or equal to 0.

[0137] When n2=0, the index of W1 to be sent is only concatenated with the CQI information source bit; when n3=0, the index of W1 to be sent is only concatenated with the index of W2. The index of W1, the index of W2 and the CQI information can be transmitted in multiples.

[0138] The concatenation sequence among W1, W2...

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Abstract

The invention discloses a method for sending uplink control information on basis of physical uplink shared channel (PUSCH) transmission and a system thereof. The PUSCH transmissions adopts a spatial multiplexing mode; and two transmission blocks configured by user equipment all transmit uplink data and perform the channel coding to the uplink data to obtain two code word streams. The method comprises the following steps of: the user equipment jointly codes the rank indication information to be sent and the information of the pre-encoding matrix in a first code book to obtain a joint coding index; and the user equipment repeatedly maps a modulating symbol which is obtained by processing the joint coding index to all transmission layers which correspond to the two code word streams to send.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and system for sending uplink control information based on PUSCH (PUSCH: Physical Uplink Shared Channel) transmission. Background technique [0002] In the Long Term Evolution system (LTE: Long Term Evolution), the uplink control information that needs to be transmitted in the uplink includes correct / error acknowledgment information (ACK / NACK: Acknowledgment / NegativeAcknowledgment), and three types of downlink physical channel state information (CSI: Channel StateInformation). Two forms: channel quality indication (CQI: Channels quality indication), precoding matrix indication information (PMI: Pre-coding Matrix Indicator) and rank indication information (RI: Rank Indicator). [0003] In the LTE system, ACK / NACK information is transmitted on the physical uplink control channel (PUCCH: PhysicalUplink Control) in format 1 / 1a / 1b (PUCCH format1 / 1a1 / b), if the te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04W72/14
CPCH04B7/0639H04B7/0632H04B7/0697H04W72/0413H04B7/066H04B7/063H04W72/21
Inventor 徐俊陈艺戬李儒岳张峻峰
Owner ZTE CORP
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