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

The technology of a transmission method and a transmission device, which is applied in the field of communication, can solve problems such as inability to make full use of different PDCCH channel conditions, and achieve the effect of simple implementation and increased time delay

Active Publication Date: 2019-10-18
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Claims
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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 and device, storage medium, base station and terminal
  • DCI transmission and reception method and device, storage medium, base station and terminal
  • DCI transmission and reception method and device, storage medium, base station and 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

The invention discloses a DCI transmission and reception method and a device, a storage medium, a base station and a terminal, and the method comprises the steps: obtaining a to-be-transmitted codeword, and enabling the to-be-transmitted codeword to be correlated with DCI; dividing the code words according to the number of the PDCCHs to obtain a plurality of sub-code words, the number of the sub-code words being equal to the number of the PDCCHs, and the sub-code words being in one-to-one correspondence with the PDCCHs; and for each sub code word, mapping the sub code word to the correspondingPDCCH. According to the scheme of the invention, the DCI can be transmitted by fully utilizing channel conditions of different PDCCHs, so that the BLER performance of PDCCH decoding is better reduced, the decoding gain is improved, the decoding correctness is improved, and the requirement of URLLC on reliability is better met.

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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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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