A method and device for sending and receiving a physical uplink control channel

Abstract

A method and device for sending and receiving a physical uplink control channel, used to enhance the channel estimation performance of a terminal device. One of the methods for sending a physical uplink control channel includes: generating a physical uplink control channel, wherein the physical uplink control channel carries a demodulation reference signal and uplink control information, and the physical uplink control channel is sent on a resource unit set, The resource unit set occupies at least 2 time domain symbols in the time domain, the demodulation reference signal is located on at least 1 time domain symbol of the resource unit set, and the at least 1 time domain symbol includes the first time domain symbol Domain symbols, the demodulation reference signal occupies part of the frequency domain subcarriers of the resource element set on the first time domain symbol, and the part of frequency domain subcarriers and the uplink control information are in the resource element set The frequency-domain subcarriers occupied by the two are the same; and the physical uplink control channel is sent.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a method and device for sending and receiving a physical uplink control channel. Background technique [0002] In the fifth-generation mobile communication technology (5G), it is possible to support multiplexing of different terminal devices within the same physical resource, and different terminal devices can use long physical uplink control channels (long physical uplink control channels, long physical uplink control channels, long physical uplink control channels) of different lengths. PUCCH). [0003] When different terminal devices are multiplexed in the same physical resource, for the demodulation reference signal (demodulation reference signal, DMRS), it is sent in a sequence orthogonal manner, that is, the DMRS sent by each terminal device will occupy all The 12 resource elements (resource element, RE) corresponding to the DMRS symbol, the DMRS seq...

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Problems solved by technology

However, the uplink control information sent by the terminal equipment in the physical resource adopts the orthogonal cover code scrambled before DFT transformation to realize the orthogonality, and the orthogonality method adopted between the uplink control information and the DMRS is different, then, if If two long PUCCHs of different lengths are multiplexed in the same physical resource, it must be ensured that the DMRS symbols of different long PUCCHs are aligned within one slot, for example, both occupy 14 symbols in one slot The second symbol, the sixth symbol, etc., otherwise, if the DMRS sent by one terminal device is aligned with other uplink control information sent by another terminal device, the orthogonality between them cannot be guaranteed, resulting in conflicts

However, if the DMRS are aligned, it may cause the number of DMRS contained in the longPUCCH of a certain length to not meet the performance requirements, please refer to figure 1 , where the box with a slash represents the DMRS. When the 14-symbol long PUCCH contains 4 DMRS in one long PUCCH resource, and the positions of these 4 DMRS are fixed on symbols 1, 5, 8, and 12, the other The 5-symbol long PUCCH multiplexed with it can only contain 1 DMRS symbol on the first symbol in this physical resource, which may lead to poor channel estimation performance of the terminal equipment using the 5-symbol long PUCCH

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