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A downlink control method and signaling for multipoint transmission

A control method and multi-point technology, applied in the field of mobile communication, to achieve the effect of increasing diversity and increasing diversity

Active Publication Date: 2022-02-25
CHINA ACADEMY OF INFORMATION & COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application proposes a downlink control method and signaling for multi-point transmission to solve the problem of how to receive downlink control information and downlink service data with high reliability when there are multiple downlink transmission points

Method used

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  • A downlink control method and signaling for multipoint transmission
  • A downlink control method and signaling for multipoint transmission
  • A downlink control method and signaling for multipoint transmission

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Embodiment Construction

[0022] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0023] When this patent discusses multi-point downlink transmission, in order to increase the reliability of the downlink control channel and downlink data, the sending point identifier corresponding to the control resource group is added to the RRC signaling, and different sending points are configured with orthogonal control resource group resources ...

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Abstract

This application discloses a downlink control method for multi-point transmission, which configures a control resource group for each transmission point, and the control resource groups of different transmission points are orthogonal to each other; sends configuration information to terminal equipment, including transmission point identification, control resource group; the MAC CE that sends downlink control signaling to the terminal device activates at least one transmission beam direction of the control resource group, and or, sends configuration information to the terminal device to indicate that the terminal activates a TCI state related to the transmission point; the terminal The device receives downlink control information for scheduling service data in at least one activated control resource group, and or, the terminal device determines a beam direction of a sending point according to the configuration information and receives service data. The application also discloses a downlink signaling for multipoint transmission. The technical solution of the present application improves the reliability of the terminal equipment in receiving downlink control information and downlink service data sent by multipoint.

Description

technical field [0001] The present application relates to the technical field of mobile communication, and in particular to a downlink control method and downlink signaling for multipoint transmission. Background technique [0002] The new wireless communication (5G NR) system supports a multi-beam transmission mechanism. The R16 version will further enhance multiple transmission points to transmit data, thereby further enhancing reliability and robustness, and supporting joint transmission. [0003] The beam indication process of the existing single-panel control channel and service data channel is that first RRC signaling configures the TCI state pool of the service data channel, activates up to 8 TCI states in the PDSCH MAC CE, and then in the downlink control information (DCI) Indicates the TCI state of the service data channel, and the PDCCH MACCE indicates the TCI corresponding to the control resource set (CORSET). [0004] When there are multiple transmission points ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/20H04W72/04H04L5/00
CPCH04W4/20H04W72/046H04L5/0094H04L5/0053H04W72/53
Inventor 焦慧颖
Owner CHINA ACADEMY OF INFORMATION & COMM
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