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Data transmission method, data sending method, terminal and control node

A technology of a data transmission method and a data sending method, which is applied in the field of communication, can solve problems such as increasing scheduling delay sidelink overhead, and achieve the effect of reducing scheduling delay and direct communication link resource overhead

Active Publication Date: 2020-10-27
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a data transmission and sending method, terminal, and control node to solve the problem that the existing sidelink resource allocation and scheduling methods will increase scheduling delay and sidelink overhead

Method used

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  • Data transmission method, data sending method, terminal and control node
  • Data transmission method, data sending method, terminal and control node
  • Data transmission method, data sending method, terminal and control node

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0162] Example 1. The base station configures the same DCI for the terminal, and the transmission status indicated by the transmission indication field is data transmission

[0163] 1. When performing direct communication link unicast

[0164] A31. The base station allocates RNTIs (for example, SL-G-RNTI) to UE1 and UE2 for sidelink transmission, and allocates transmission IDs of UE1 and UE2 to 0 and 1, respectively.

[0165] A32. The base station schedules UE1 to send sidelink unicast data to UE2. The base station generates and schedules DCI (for example, DCI format 3-1) to UE1 and UE2, where the transmission indication field is 0, and scrambles the DCI using SL-G-RNTI, and passes PDCCH transmission.

[0166] A33, UE1 and UE2 use SL-G-RNTI to monitor the PDCCH, decode and demodulate the scheduling DCI.

[0167] A34. UE1 finds that the transmission identification ID assigned to it in the transmission indication field is 0, and thus knows that it is the sending UE; UE2 finds ...

example 2

[0178] Example 2. The base station configures the same DCI for the terminal, and the transmission status indicated by the transmission indication field is data reception and direct communication link unicast

[0179] A51. The base station allocates RNTIs (for example, SL-G-RNTI) to UE1 and UE2 for sidelink transmission, and allocates transmission identifiers IDs 0 and 1 to UE1 and UE2 respectively.

[0180] A52. The base station schedules UE1 to send sidelink unicast data to UE2, and the base station generates and schedules DCI (for example, DCI format 3-1) to UE1 and UE2, where the transmission ID in the transmission indication field is 1, and scrambled using SL-G-RNTI The DCI is sent through the PDCCH.

[0181] A53, UE1 and UE2 use SL-G-RNTI to monitor the PDCCH, decode and demodulate the scheduling DCI.

[0182] A54. UE2 finds that the transmission indication field assigned to it is 1, and thus knows that it is the receiving UE; UE1 finds that the transmission indication f...

example 3

[0185] Example 3. The base station configures the same DCI for the terminal, and the transmission status indicated by the transmission indication field is data reception and data transmission, and direct communication link unicast

[0186] A61. The base station allocates RNTIs (for example, SL-G-RNTI) to UE1 and UE2 for sidelink transmission, and allocates transmission identifiers IDs 0 and 1 to UE1 and UE2 respectively.

[0187] A62. The base station schedules UE1 to send sidelink unicast data to UE2, and the base station generates scheduling DCI (for example, DCI format 3-1) to UE1 and UE2, where the transmission ID in the transmission indication field includes 0 and 1, 0 indicates the sending end, and 1 Indicates that the receiving end uses SL-G-RNTI to scramble the DCI and sends it through the PDCCH.

[0188] A63, UE1 and UE2 use the SL-G-RNTI to monitor the PDCCH, decode and demodulate the scheduling DCI.

[0189] A64. UE1 discovers that the transmission ID assigned to i...

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Abstract

The invention provides a data transmission method, a data sending method, a terminal and a control node, and relates to the technical field of communication. The data transmission method is applied tothe terminal and comprises the steps of obtaining first information; according to the first information, obtaining a scheduling instruction sent by a control node for a direct communication link; according to the scheduling instruction, carrying out data transmission. The first information comprises a scheduling identifier, and the scheduling identifier is used for indicating the terminal to monitor a scheduling instruction. Thus, the scheduling delay and the direct communication link resource overhead can be reduced.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a data transmission and sending method, a terminal and a control node. Background technique [0002] The fifth generation (5Generation, 5G) new air interface (New radio, NR) system supports direct communication links (sidelink, or translated as secondary link, side link, side link, side link, etc.) from Release 16, It can be used in a working frequency band above 6GHz not supported by Long Term Evolution (LTE), and supports a larger working bandwidth. NR sidelink supports multiple transmission modes such as unicast, multicast, and broadcast, and supports Hybrid Automatic Repeat Request (HARQ) in unicast and multicast modes. The HARQ response is sent through a physical direct communication link feedback channel (Physical Sidelink Feedback Channel, PSFCH). In addition, NR sidelink also supports multiple resource allocation modes, such as base station scheduling mode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12H04L1/00H04L1/16H04L1/18
CPCH04L1/0028H04L1/1614H04L1/1806H04L1/1812H04W72/20
Inventor 纪子超邬华明
Owner VIVO MOBILE COMM CO LTD
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