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Feedback method, terminal device and base station
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A technology of terminal equipment and base station, which is applied in the field of communication, and can solve the problems that UE cannot obtain PUCCH transmission power adjustment information in time, cannot transmit PUCCH, and increases downlink control signaling overhead, etc.
Active Publication Date: 2015-07-29
DATANG MOBILE COMM EQUIP CO LTD
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[0024] In the existing dynamic TDD system, since the UE works according to the downlink reference configuration, the downlink subframe receiving DL DAI=1 may not be the downlink subframe corresponding to the SIB1 configuration. At this time, there is no corresponding PUCCH hidden in the system. type resource, therefore, cannot transmit PUCCH
At this time, if the dedicated information field is directly added to PDCCH / EPDCCH to indicate PUCCH format 3 resources, it will increase the downlink control signaling overhead and affect system efficiency
If the TPC information field in the PDCCH / EPDCCH is always used to indicate the PUCCH format 3 resources, the UE cannot obtain the PUCCH transmission power adjustment information in a timely manner.
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Embodiment 1
[0152] Table 8 shows the HARQ feedback of the first type of downlink subframe set and the second type of downlink subframe set when the downlink reference configuration (that is, the first uplink / downlink configuration) is TDD uplink / downlink configuration 5, corresponding to different SIB1 configurations The timing relationship is as follows:
[0153] Table 8. When the downlink reference configuration according to the embodiment of the present invention is TDD uplink / downlink configuration 5, corresponding to different SIB1 configurations, the first type of downlink subframe set and the second type of downlink subframe set
[0154]
[0155] Wherein, when the configuration notified by the system information on carrier c is TDD uplink / downlink configuration 1, and the downlink reference configuration (that is, the first uplink / downlink configuration) is TDD uplink / downlink configuration 5, the terminal device sends ACK / NACK feedback information, the first set of downlink sub...
Embodiment 2
[0169]Continuing to refer to Table 8, when the configuration notified by the system information on carrier c is TDD uplink / downlink configuration 2, and the downlink reference configuration (that is, the first uplink / downlink configuration) is TDD uplink / downlink configuration 5, the terminal in the uplink subframe n= 2 Receive ACK / NACK feedback information, the first downlink subframe set includes downlink subframes {n-8, n-7, n-4, n-6} on carrier c, and the second downlink subframe set includes carrier c Uplink subframes {n-13, n-12, n-9, n-11, n-5}, the base station cannot 11, n-5} transmit the SPS PDSCH, and the UE does not receive the SPS PDSCH in the downlink subframes {n-13, n-12, n-9, n-11, n-5}.
[0170] Among them, the base station does not transmit the SPS PDSCH in the downlink subframe {n-13, n-12, n-9, n-11, n-5}, there are two different implementation methods as follows:
[0171] Mode 1: When configuring the SPS PDSCH transmission parameters, the base station re...
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Abstract
The invention discloses a feedback method. The method comprises that when a terminal device only receives PDSCH and / or PDCCH / EPDCCH for indicating release of SPS resource from subframes of a first type of down subframe set, the terminal device back feeds ACK / NACK feedback information in the channel selection manner; and when the terminal device receives PDCCH / EPDCCH for scheduling PDSCH transmission and / or PDCCH / EPDCCH for indicating release of SPS resource from subframes of a second type of down subframe set, the terminal device back feeds ACK / NACK feedback information in the PUCCH format 3. Under the condition that the signaling cost is not increased, it is ensured that the terminal device can receive necessary PUCCH emission power adjusting information, and hidden PUCCH resource is fully utilized.
Description
technical field [0001] The present invention relates to the communication field, in particular, to a feedback method, terminal equipment and a base station. Background technique [0002] As one of the two basic duplex systems, Time Division Duplex (TDD) mode has received more and more attention under the background of the increasing demand for bandwidth in broadband mobile communications. In a TDD system, uplink and downlink transmission use the same frequency resources, and uplink / downlink signals are transmitted on different time slots. [0003] In the common TDD system, including the time division synchronous code division multiple access (TD-SCDMA) system of the third generation mobile communication (3G) system and the time division long term evolution (TD-LTE) system of the fourth generation mobile communication (4G) system , wherein the division of uplink and downlink time slots is static or semi-static, and the usual practice is to determine the proportion of uplink ...
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