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Unicast transmission method, configuration method, terminal and network side device

A technology of network side equipment and transmission direction, applied in transmission path sub-channel allocation, transmission system, digital transmission system, etc., can solve the problems of high power consumption of terminals, prolonged data time, slow processing time, etc., and achieve fast processing time. , the effect of reducing feedback delay and power consumption

Active Publication Date: 2022-07-15
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the embodiments of the present invention is to provide a unicast transmission method, a configuration method, a terminal, and a network-side device, so as to solve the problem caused by the receiving terminal performing data detection in the receiving resource pool during the unicast process of the direct link in the prior art. Large power consumption, slow processing time, extended data time, etc.

Method used

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  • Unicast transmission method, configuration method, terminal and network side device
  • Unicast transmission method, configuration method, terminal and network side device
  • Unicast transmission method, configuration method, terminal and network side device

Examples

Experimental program
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Effect test

example 1

[0171] Network side equipment: use the PDCCH command scrambled by the RNTI of the sending terminal to allocate Sidelink unicast transmission resources;

[0172] Sending terminal: monitor the PDCCH command of the network-side device scrambled with the RNIT of the sending terminal, and if there is resource allocation information for the sending terminal, send data on the allocated resources;

[0173] Receiving terminal: monitors the PDCCH command of the network-side device scrambled with the RNIT of the transmitting terminal, and if there is resource allocation information for the transmitting terminal, the receiving terminal performs data reception on the allocated resources according to the PDCCH command.

[0174] As another preferred embodiment of dynamic scheduling, the terminals are sending terminals and receiving terminals of Sidelink unicast transmission. Correspondingly, step 41 includes:

[0175] Obtain the shared intra-cell unique identifier RNTI allocated by the netwo...

example 2

[0185] Network side equipment: allocate a shared RNTI to the paired terminals (two terminals transmitted by Sidelink unicast), and configure the direction indication information to be carried in the subsequent scheduling commands. The transmission indication is set to "1"; the PDCCH scheduling command scrambled with the shared RNTI is used for dynamic allocation, and the transmission direction of the Sidelink unicast transmission resource is indicated in the PDCCH scheduling command. For example, the PDCCH scheduling command carries the transmission flag "0" Indicates that terminal 1 sends, and "1" indicates that terminal 2 sends.

[0186] Sending terminal and receiving terminal: receive the configuration command of the network side device, determine the shared RNTI used for the direct link scheduling; receive the PDCCH scheduling command scrambled by the network side device with the shared RNTI, and send the The identifier determines which terminal transmits the Sidelink unic...

example 3

[0188] Network side equipment: allocate shared RNTI to paired terminals (two terminals of Sidelink unicast transmission), perform dynamic allocation with PDCCH scheduling commands scrambled by the shared RNTI, and allocate Sidelink unicast transmission resources.

[0189] Sending terminal and receiving terminal: The paired terminal decides by itself the terminal that sends data in the Sidelink unicast transmission resource. The specific method can be to configure the terminal to pre-agreed the transmission direction or the order of the transmission direction when establishing a connection, such as always sent by one terminal (for example, the sensor sends data to the data collection terminal), or one terminal sends first, and the other terminal later Send (eg request and response messages from the head of the convoy and the platooning vehicles).

[0190] As a preferred embodiment of configuration resource scheduling mode 1, the terminals are the sending terminal and the receiv...

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Abstract

The present invention provides a unicast transmission method, a configuration method, a terminal and a network side device. The method includes: determining Sidelink unicast transmission resources allocated by the network side equipment; / or receiving; in the embodiment of the present invention, the receiving terminal can accurately obtain the Sidelink unicast transmission resources, so that data reception can be performed at an accurate resource location without searching in the entire resource pool; thus, the power consumption of the receiving terminal is reduced, and the processing of the receiving terminal is reduced. The data transmission delay can also enable the receiving terminal to quickly learn the feedback resources of the direct link and reduce the feedback delay.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a unicast transmission method on a direct link, a configuration method, a terminal and a network side device. Background technique [0002] Direct communication between devices is a typical communication method in a V2X (vehicle to everything) system. Devices and devices in close proximity to each other allow direct device-to-device communication. For the convenience of description, the direct link between the device and the device is defined as a Sidelink link, and the cellular communication link between the network and the direct communication device is called a D2N (Device to Network, device to network) link, or Uu interface. The schematic diagram of direct communication is as follows figure 1 As shown, the D2D link is also called the Sidelink link, or the PC5 interface. [0003] The devices that communicate directly may all be on the network, or they...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04W76/11H04W76/14
CPCH04W76/11H04W76/14H04L5/0053H04L5/0058Y02D30/70
Inventor 谌丽
Owner DATANG MOBILE COMM EQUIP CO LTD