Method for transmitting uplink control information, terminal device, and network device
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A technology for terminal equipment and control information, which is applied in the direction of transmission path sub-channel allocation, transmission system, digital transmission system, etc., and can solve the problem of ACK/NACK information waste and overhead
Active Publication Date: 2019-04-19
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Then there may be a waste of overhead for the ACK / NACK information fed back by the terminal device
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Embodiment 1
[0056] Embodiment 1: In the case of single carrier and single codeword transmission, the ACK / NACK feedback timing set is {1, 2, 3, 4, 5, 6, 7, 8}, where the PDCCH monitoring time point is a slot (slot) n, n+1, n+5, n+6, set Such as image 3 As shown, if PDSCH is to be transmitted in downlink slot n+4, the corresponding DCI must be transmitted in slot n+2 or n+3, but these two slots are not PDCCH monitoring time points, so DCI will not be transmitted. Therefore, there will be no PDSCH transmission in slot n+4, and there will be no corresponding ACK / NACK information. The feedback information sequence can only contain 7 bits of information, namely {b n ,b n+1 ,b n+2 ,b n+3 ,b n+5 ,b n+6 ,b n+7}.
Embodiment 2
[0057] Embodiment 2: In the case of single carrier and single codeword transmission, the ACK / NACK feedback timing set is {1, 2, 3, 4, 5, 6, 7, 8}, where slot n+2~n+4 are uplink slot, all downlink slots are PDCCH monitoring time points. Assume Such as Figure 4 As shown, if PDSCH is to be transmitted in downlink slot n+5, the corresponding DCI must be transmitted in slot n+3 or n+4, but these two slots are both uplink slots, so DCI will not be transmitted, so slot There will be no PDSCH transmission in n+5, and there will be no corresponding ACK / NACK information. The feedback information sequence can only contain 4 bits of information, namely {b n ,b n+1 ,b n+6 ,b n+7}.
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Abstract
The embodiment of the invention discloses a method for transmitting uplink control information, a terminal device and a network device, The method comprises the following steps that the terminal device determines a second time domain resource set from a preset first time domain resource set, wherein each time unit in the second time domain resource set is a candidate time domain unit used for transmitting downlink data, and the first time domain resource set is determined according to a response ACK / negative response NACK feedback time sequence set of the downlink data; and the terminal devicesends the ACK / NACK feedback information corresponding to each time unit in the second time domain resource set to the network device in the target time unit. According to the method, the terminal device and the network device provided by the embodiment of the invention, the ACK / NACK feedback overhead can be reduced.
Description
technical field [0001] The embodiments of the present application relate to the communication field, and more specifically, relate to a method for transmitting transmission control information, a terminal device, and a network device. Background technique [0002] In a current New Radio (New Radio, NR) system, a Physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH) supports dynamic indication and feedback of response information. For example, the network device can pre-configure a feedback sequence set for the terminal device, and the set can include 8 values {K1 0 , K1 1 , K1 2 , K1 3 , K1 4 , K1 5 , K1 6 , K1 7}. If the PDSCH is transmitted in time unit n, the downlink control information (Downlink ControlInformation, DCI) used to schedule the PDSCH may include a target information field to indicate a value K1 in the feedback timing set i , then the terminal device can be in the time unit (n+K1 i ) to send the acknowledgment (acknowledgment...
Claims
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