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Methods and device for transmitting and receiving ACK/NACK (acknowledgement/negative acknowledgement)

A technology of transmission method and transmission mode, which is applied in the field of wireless communication, can solve the problems affecting ACK/NACK and uplink data detection performance, understanding inconsistency, etc., and achieve the effect of improving transmission reliability and avoiding DTX detection

Active Publication Date: 2011-10-19
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the downlink data of the UE is lost, it will cause the base station and the UE to have inconsistent understanding of whether ACK / NACK is transmitted on the PUSCH, thus affecting the detection performance of ACK / NACK and uplink data

Method used

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  • Methods and device for transmitting and receiving ACK/NACK (acknowledgement/negative acknowledgement)
  • Methods and device for transmitting and receiving ACK/NACK (acknowledgement/negative acknowledgement)
  • Methods and device for transmitting and receiving ACK/NACK (acknowledgement/negative acknowledgement)

Examples

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Embodiment 1

[0059] An embodiment of the present invention provides an ACK / NACK transmission method, such as Figure 4 As shown, the method includes the following steps:

[0060] Step 401, UE determines ACK / NACK feedback information transmitted on PUSCH.

[0061] In the embodiment of the present invention, in the LTE-A system, when the ACK / NACK feedback information is transmitted on the PUSCH, if the UE determines that the PUSCH used to transmit the uplink control information is a PUSCH without a corresponding PDCCH, or a PUSCH in a TDD system When the PUSCH under row configuration 0 or the PUSCH in the FDD system, no matter whether the UE receives the PDSCH or the PDCCH indicating the release of downlink SPS resources in the downlink subframe corresponding to the current uplink subframe that needs ACK / NACK feedback, the UE All transmit ACK / NACK feedback information on the PUSCH (that is, if the UE does not receive the PDSCH or the PDCCH indicating the release of downlink SPS resources in...

Embodiment 2

[0113] An embodiment of the present invention provides a method for receiving ACK / NACK. This embodiment is a processing flow of the base station side corresponding to the ACK / NACK information transmitted by the UE side. Such as Figure 9 As shown, the method includes the following steps:

[0114] Step 901, the base station determines the number of ACK / NACK feedback information bits transmitted by the UE on the PUSCH.

[0115] In the embodiment of the present invention, in the LTE-A system, when the base station determines that the PUSCH used by the UE to transmit uplink control information is a PUSCH without a corresponding PDCCH, or a PUSCH with uplink and downlink configuration 0 in a TDD system, or an FDD When using PUSCH in the system, the base station believes that there is ACK / NACK feedback downlink transmission, that is, the base station does not need to perform DTX detection on the ACK / NACK feedback information on the PUSCH, and determines that the UE always transmits...

Embodiment 3

[0138] Based on the same inventive concept as the above method, an embodiment of the present invention also provides a user equipment UE, such as Figure 10 As shown, the UE includes:

[0139] A judging module 11, configured to judge that the physical uplink shared channel PUSCH determined by the UE for transmitting uplink control information is a PUSCH without a corresponding physical downlink control channel PDCCH, or a PUSCH with uplink and downlink configuration 0 in a time division duplex TDD system, Or it is the PUSCH in the frequency division duplex FDD system, and it is used to judge that the UE has not received the physical downlink shared channel PDSCH or indicates the downlink PDCCH for semi-persistent scheduling SPS resource release;

[0140] An information determination module 12, configured to determine ACK / NACK feedback information transmitted on the PUSCH;

[0141] A resource determination module 13, configured to determine resources used to transmit the ACK / ...

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Abstract

The invention discloses methods and device for transmitting and receiving ACK / NACK (acknowledgement / negative acknowledgement). The method for transmitting the ACK / NACK comprises: when a PUSCH (physical uplink shared channel) used for transmitting uplink control information and determined by user equipment (UE) is a PUSCH which has no corresponding PDCCH (physical downlink control channel), or a PUSCH under the uplink configuration and downlink configuration 0 in a TDD (time division duplexing) system, or a PUSCH in an FDD (frequency division duplexing) system, if the UE does not receive the PDSCH in a downlink subframe which performs ACK / NACK feedback in an uplink subframe which sends the PUSCH correspondingly, or if the UE instructs the PDCCH released by downlink SPS (semi-persistent scheduling) resources, the UE determines the ACK / NACK feedback information transmitted on the PUSCH; the UE determines the resources for transmitting the ACK / NACK feedback information on the PUSCH; and the UE transmits the ACK / NACK feedback information on the determined resources for transmitting the ACK / NACK feedback information on the PUSCH. According to the invention, the inconformity of understanding on whether the ACK / NACK is transmitted on the PUSCH by a base station and the UE caused by the UE downlink data loss can be avoided, and the transmission reliability of the downlink data and ACK / NACK feedback information can be improved.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to an ACK / NACK transmission method, a reception method and a device thereof. Background technique [0002] For the LTE-A (Long Term Evolution Advanced, long-term evolution upgrade) 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 The schematic diagram of the single-spectrum system is shown; another possibility is to use CA (Carrier Aggregation, Carrier Aggregation) technology 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 system The uplink and downlink carriers can be configured asymmetrically, that is, users may occupy N1≥1 carriers for downlink transmission, and N2≥1 carriers for uplin...

Claims

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Application Information

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IPC IPC(8): H04L1/16
CPCH04L1/1854
Inventor 高雪娟沈祖康林亚男
Owner DATANG MOBILE COMM EQUIP CO LTD
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