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DCI transmission and reception method, device, storage medium, base station, terminal

A transmission method and technology of a transmission device, applied in the field of communication, can solve problems such as inability to make full use of different PDCCH channel conditions, and achieve the effects of improving decoding accuracy, increasing decoding delay, and reducing block error rate

Active Publication Date: 2022-03-04
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology

[0004] However, there are still defects in the existing implementation of DCI transmission through multiple PDCCHs, which cannot make full use of the channel conditions of different PDCCHs

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  • DCI transmission and reception method, device, storage medium, base station, terminal
  • DCI transmission and reception method, device, storage medium, base station, terminal
  • DCI transmission and reception method, device, storage medium, base station, terminal

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Embodiment Construction

[0048] As mentioned in the background technology, in order to meet the high reliability and low delay requirements of URLLC services, the latest meeting proposed a scheme to use the physical downlink control channel (Physical Downlink Control Channel, referred to as PDCCH) repeated transmission scheme, through each PDCCH Transmission of downlink control information (Downlink Control Information, referred to as DCI) encoding and rate-matched codeword bits (referred to as "codeword") with the same content to reduce the block error rate (Block Error Rate) when only transmitting on one PDCCH , referred to as BLER).

[0049] Taking the number of PDCCHs as 2, where the aggregation level (Aggregation Level, AL for short) on each PDCCH is 4 as an example, refer to figure 1 , wherein, in one time slot (slot), the PDCCH is repeated twice (corresponding to PDCCH01 and PDCCH02 in the figure respectively, wherein the number of symbols occupied by PDCCH01 and PDCCH02 can be the same or diff...

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Abstract

A DCI transmission and reception method, device, storage medium, base station, and terminal, the method comprising: acquiring a codeword to be transmitted, the codeword to be transmitted is associated with the DCI; dividing the codeword according to the number of PDCCHs, to Obtain a plurality of sub-codewords, the number of the plurality of sub-codewords is equal to the number of the PDCCH, and the sub-codewords are in one-to-one correspondence with the PDCCH; for each sub-codeword, map the sub-codeword to the corresponding The PDCCH. The scheme of the present invention can make full use of different PDCCH channel conditions to transmit DCI, thereby better reducing the BLER performance of PDCCH decoding, improving decoding gain, improving decoding correctness, and better meeting the reliability requirements of URLLC.

Description

technical field [0001] The present invention relates to the technical field of communications, and in particular to a DCI transmission and reception method, device, storage medium, base station, and terminal. Background technique [0002] As a hot topic of New Radio (NR) technology, Ultra Reliable and Low Latency Communication (URLLC) system requires ultra-reliable system performance and ultra-low system processing time. delay. [0003] In order to meet the performance requirements of the above two aspects, as discussed in the current 3GPP#92 meeting, when transmitting downlink control information (DCI for short) in the URLLC system, multiple physical downlink control channels (Physical Downlink Control Channels) can be allocated. , PDCCH for short) method to reduce the Block Error Rate (Block Error Rate, BLER for short) during transmission. [0004] However, there are still defects in the existing implementation of DCI transmission through multiple PDCCHs, which cannot ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04W72/12
CPCH04L1/0067H04L1/0071H04L1/0036H04W72/23
Inventor 樊婷婷刘萌萌周化雨
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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