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Codebook transmission method, device and system

A codebook and sub-codebook technology, applied in the field of devices and systems, and codebook transmission methods, can solve the problems of long preparation time, inability to generate, and short preparation time.

Active Publication Date: 2020-09-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in an actual application scenario, if the preparation time required for the sent downlink transmissions is different, for example, the preparation time required for the first downlink transmission is long, and the preparation time required for the second downlink transmission is short, then when preparing the first downlink transmission When the DCI is transmitted in the downlink, the network device cannot know that the second downlink transmission will also be sent, so that the DCI corresponding to the first downlink transmission and the DCI corresponding to the second downlink transmission cannot generate a C-DAI that satisfies the arrangement rules of the prior art and T-DAI

Method used

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  • Codebook transmission method, device and system
  • Codebook transmission method, device and system
  • Codebook transmission method, device and system

Examples

Experimental program
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Effect test

example 1

[0100] Example 1, such as figure 2 As shown, both PDSCH_1 and PDSCH_3 correspond to the same PDCCH listening opportunity, but belong to different serving cells. According to the ascending order of the index number of the serving cell first, and then the ascending order of the index number of the PDCCH monitoring opportunity, determine that the indication information corresponding to PDSCH_1 is 1, T-DAI is 2, and determine that the indication information corresponding to PDSCH_3 is C-DAI It is 2, T-DAI is 2. Since the T-DAIs corresponding to PDSCH_1 and PDSCH_3 are both 2, it is necessary to know the existence of PDSCH_3 when preparing the indication information of PDSCH_1. However, if figure 2 As shown, for example, when PDSCH_1 is an enhanced mobile broadband (eMBB) service, the preparation time T1 required by PDSCH_1 is relatively long, and PDSCH_3 is an ultra-reliable / low latency communication (Ultra-reliable / low latency communication, URLLC ) service, the preparation ...

example 2

[0101] Example two, such as image 3 As shown, both PDSCH_1 and PDSCH_3 correspond to the same PDSCH opportunity, but belong to different serving cells. According to the ascending order of the index number of the serving cell first, and then the ascending order of the index number of the PDSCH opportunity, determine that the indication information C-DAI corresponding to PDSCH_1 is 1, T-DAI is 2, and determine that the indication information corresponding to PDSCH_3 is C-DAI is 2, T-DAI is 2. However, if image 3 As shown, since the T-DAIs corresponding to PDSCH_1 and PDSCH_3 are both 2, it is necessary to know the existence of PDSCH_3 when preparing the indication information of PDSCH_1. The existence of PDSCH_3 can only be known when the indication information of PDSCH_3 is prepared at time B2, and the existence of PDSCH_3 cannot be known when the indication information of PDSCH_1 is prepared at time A2, and the indication information corresponding to PDSCH_1 cannot be accu...

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PUM

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Abstract

The application discloses a codebook transmission method, device and system. For a target downlink transmission in at least one downlink transmission sent by the network device, obtain an actual timing corresponding to the target downlink transmission, and obtain a reference timing for the target downlink transmission after offsetting the actual timing according to the timing offset value . A pairing corresponding to the target downlink transmission is defined, and the pairing is a pairing of a frequency domain resource of the target downlink transmission and a reference opportunity of the target downlink transmission. According to the obtained pairing corresponding to the at least one downlink transmission, determine indication information corresponding to the at least one downlink transmission. When determining the indication information, it is based on the reference opportunity corresponding to the downlink transmission, and the indication information for the downlink transmission corresponding to the same reference opportunity can be generated within the same time period. Therefore, when preparing an indication information for downlink transmission, also The existence of another downlink transmission can be known, and the indication information corresponding to the downlink transmission can be effectively generated.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a codebook transmission method, device and system. Background technique [0002] In a next-generation radio access network (new radio, NR), a physical downlink control channel (physical downlink control channel, PDCCH) is sent by a network device to a terminal device, and the PDCCH carries downlink control information (downlink control information, DCI). The PDCCH may be used to schedule a physical downlink shared channel (physical downlink shared channel, PDSCH) carrying downlink data, may also be used to indicate the activation of Semi-Persistent Scheduling (Semi-Persistent Scheduling, SPS), and may also be used to indicate the release of SPS. [0003] In the NR system, the DCI includes a count downlink assignment indicator (C-DAI), and may also include a total downlink assignment indicator (T-DAI). Wherein, the C-DAI is used to indicate the count of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04L5/00
CPCH04L5/0053H04W72/0453H04W72/23H04L5/0055H04L1/1861H04L1/1896H04L1/1614H04L1/1854H04L5/0094H04L5/001H04B7/0417H04B7/0456
Inventor 邵家枫官磊宋兴华
Owner HUAWEI TECH CO LTD