Method for uplink confirm information transmission on uplink control channel

A control channel, physical uplink technology, applied in the field of communication, can solve the problem of unequal number of symbols occupied by reference signal ACK/NACK signals, etc.

Inactive Publication Date: 2008-11-19
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention aims to provide a physical uplink control channel transmission method for uplink acknowledgment information to solve the problem caused by the unequal number of symbols occupied by reference signals and the number of symbols occupied by ACK / NACK signals

Method used

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  • Method for uplink confirm information transmission on uplink control channel
  • Method for uplink confirm information transmission on uplink control channel
  • Method for uplink confirm information transmission on uplink control channel

Examples

Experimental program
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Embodiment 1

[0048] Figure 3a-3d It is a schematic diagram of the new PUCCH structure for sending confirmation messages when the PUCCH uses an extended cyclic prefix in the LTE system, and it is mainly used to carry ACK / NACK information. In this diagram, a 1ms subframe is divided into two 0.5ms time slots. When the PUCCH uses an extended cyclic prefix, each 0.5ms time slot contains 6 symbols, numbered #0~#5, each symbol It occupies 12 subcarriers in the frequency domain. The two time slots use the same structure to transmit uplink acknowledgment information.

[0049] The ACK / NACK information bit sent in one uplink subframe is 1 bit or 2 bits, corresponding to 1 stream or 2 streams of downlink transmission respectively. The 1-bit / 2-bit ACK / NACK information is modulated by BPSK / QPSK to form a modulation symbol. The modulation symbol is first spread in the frequency domain with a spreading factor of 12 (the spreading sequence is a 12-long CAZAC sequence). Then in the time domain, after a ...

Embodiment 2

[0059] Figure 4a~4d It is a schematic diagram of the new PUCCH structure for sending confirmation messages when the PUCCH uses a regular cyclic prefix and a sounding pilot is sent in the LTE system. It is mainly used to carry ACK / NACK information. In this diagram, a 1ms subframe is divided into two 0.5ms time slots. When the PUCCH uses an extended cyclic prefix, each 0.5ms time slot contains 7 symbols, numbered #0~#6, and each symbol It occupies 12 subcarriers in the frequency domain.

[0060] In the first time slot of an uplink subframe, the transmitted ACK / NACK information bits are 1 bit or 2 bits, corresponding to 1 stream or 2 streams of downlink transmission respectively. The 1-bit / 2-bit ACK / NACK information is modulated by BPSK / QPSK to form a modulation symbol. The modulation symbol is first spread in the frequency domain with a spreading factor of 12 (the spreading sequence is a 12-long CAZAC sequence). Then in the time domain, after a time domain extension of a WASH...

Embodiment 3

[0073] Figure 5a-5d In the LTE system, when the PUCCH uses an extended cyclic prefix and a sounding pilot is sent, a new PUCCH structure diagram for sending confirmation messages is mainly used to carry ACK / NACK information. In this diagram, a 1ms subframe is divided into two 0.5ms time slots. When the PUCCH uses an extended cyclic prefix, each 0.5ms time slot contains 6 symbols, numbered #0~#5, each symbol It occupies 12 subcarriers in the frequency domain. The Sounding pilot is sent on the last symbol of the second time slot, that is, there are 5 available symbols in the second time slot.

[0074] method one

[0075] In the first time slot of an uplink subframe, the transmitted ACK / NACK information bits are 1 bit or 2 bits, corresponding to 1 stream or 2 streams of downlink transmission respectively. The 1-bit / 2-bit ACK / NACK information is modulated by BPSK / QPSK to form a modulation symbol. The modulation symbol is first spread in the frequency domain with a spreading fa...

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Abstract

The invention provides an up-link acknowledgement information transmitting method in a physical up-link control channel. The number of the usable symbol in a time slot of the sub-frame in the physical up-link control channel is six, three of the symbols can be used for transmitting the up-link acknowledgement information, and the other three symbols are used for transmitting reference signal. The up-link acknowledgement information transmitting method of the invention overcomes the problem brought by the inequality of the symbol number occupied by the reference signal and the symbol number occupied by ACK / NACK signal, and can multiplex more user equipments by using the same resource, thereby increases the system capacity.

Description

technical field [0001] The present invention relates to the communication field, in particular to a physical uplink control channel sending method of uplink acknowledgment information. Background technique [0002] In a Hybrid Automatic Repeat Request (HARQ) mode, the code 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 of the received information. If the error is within the error correction capability of the code, it will automatically correct the error. If there are too many errors and exceeds the error correction capability of the code, the receiving end will Send a decision signal to the sender through the feedback channel, requesting the sender to resend information. In the OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) system, the ACK / NACK (Acknowledged / Non-acknowledged) contro...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H04L1/18H04L27/26
Inventor夏树强戴博梁春丽郝鹏
OwnerZTE CORP