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Channel resource determination method of ACK/NACK feedback information and equipment

A technology of channel resources and feedback information, applied in the field of channel resource determination of ACK/NACK feedback information

Active Publication Date: 2012-05-23
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Embodiments of the present invention provide a method and device for determining channel resources for ACK / NACK feedback information, which solves the problem of determining channel resources required by PUCCH format 1b with channel selection in the prior art

Method used

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  • Channel resource determination method of ACK/NACK feedback information and equipment
  • Channel resource determination method of ACK/NACK feedback information and equipment
  • Channel resource determination method of ACK/NACK feedback information and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] It corresponds to method 1 in the method for determining resources of the first type in step S402.

[0110] The UE is configured with 2 downlink carriers, downlink carrier 1 is the downlink primary carrier, downlink carrier 1 adopts multi-codeword transmission mode, there is no SPS transmission subframe on the downlink primary carrier, downlink carrier 2 adopts single codeword transmission mode, M=4, That is, the UE needs to feed back the ACK / NACK feedback information of 4 downlink subframes in one uplink subframe, and does not support cross-carrier scheduling, such as Figure 5 As shown, the process of transmitting ACK / NACK is as follows:

[0111] UE side:

[0112] According to the two downlink carrier configurations and the transmission mode of each downlink carrier, the UE determines that 12-bit ACK / NACK needs to be fed back, which is greater than 4 bits, so ACK / NACK combination is required.

[0113] Since the downlink primary carrier (downlink carrier 1) is in a m...

Embodiment 2

[0124] Method 1 corresponds to the first type resource determination method in step S402.

[0125] The UE is configured with 4 downlink carriers. Downlink carrier 1 is the main downlink carrier. There is no SPS transmission subframe on the main downlink carrier. Both downlink carriers 1 and 4 use single codeword transmission mode, and downlink carriers 2 and 3 both use multi-codeword transmission. Mode, M=4, that is, the UE needs to feed back the ACK / NACK feedback information of 4 downlink subframes in one uplink subframe, supports cross-carrier scheduling, and the data packets of downlink carrier 2 and downlink carrier 3 are transmitted by the PDCCH on downlink carrier 1 to schedule, such as Image 6 As shown, the process of transmitting ACK / NACK is as follows:

[0126] UE side:

[0127] According to the configuration of 4 downlink carriers and the transmission mode of each downlink carrier, the UE determines that 24-bit ACK / NACK needs to be fed back, which is greater than ...

Embodiment 3

[0139] Method 1 corresponds to the first type resource determination method in step S402.

[0140] The UE is configured with 3 downlink carriers, downlink carrier 1 is the downlink main carrier, there is no SPS transmission on the downlink main carrier, all downlink carriers adopt single code word transmission mode, M=3, that is, the UE needs to feed back 3 codewords in one uplink subframe The ACK / NACK of the downlink subframe does not support cross-carrier scheduling, such as Figure 7 As shown, the process of transmitting ACK / NACK is as follows:

[0141] UE side:

[0142] According to the configuration of 3 downlink carriers and the transmission mode of each downlink carrier, the UE determines that 9-bit ACK / NACK needs to be fed back, which is greater than 4 bits, so ACK / NACK combination is required;

[0143] Then, the ACK / NACK feedback information in each downlink subframe is combined, and the combined processing process is as follows:

[0144] In downlink subframe 1, th...

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Abstract

An embodiment of the invention discloses a channel resource determination method of ACK / NACK feedback information and equipment. Through applying a technical scheme of the embodiment, alternative channel resource can be determined in an application scene employing a PUCCH format 1b with channel selection scheme. A determination problem of channel resource needed by channel selection is solved when a terminal device employs the PUCCH format 1b with channel selection scheme to transmit ACK / NACK feedback information which is subjected to configuration downlink intercarrier merging. A situation that the alternative channel resource can not be determined according to present implicit channel resource which is determined by a PDCCH which is transmitted only through a downlink main carrier is avoided. To a scene that the ACK / NACK feedback information is larger than 4 bits, transmission of the ACK / NACK feedback information through the PUCCH format 1b with channel selection scheme is realized. The method and the equipment are mainly suitable for a TDD system.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for determining channel resources of ACK / NACK feedback information. Background technique [0002] For the Long Term Evolution multi-carrier system, in order to support a wider system bandwidth than the LTE (Long Term Evolution, Long Term Evolution) system, such as 100MHz, one possibility is to directly allocate 100M bandwidth spectrum, such as figure 1 One possibility is to aggregate some spectrum allocated to the existing system to form a large bandwidth for the long-term evolution multi-carrier system. At this time, the uplink and downlink carriers in the system can be configured asymmetrically, that is, users may occupy N≥ 1 carrier for downlink transmission, M≥1 carrier for uplink transmission, such as figure 2 shown. [0003] The LTE-A (Long Term Evolution Advanced, Advanced Long Term Evolution) system currently determines that it can su...

Claims

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Application Information

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IPC IPC(8): H04W72/08H04W72/12H04L1/16
Inventor 高雪娟沈祖康林亚男
Owner DATANG MOBILE COMM EQUIP CO LTD
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