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D2D direct discovery resource selection method and system

A technology for discovering resources and selecting systems, which is applied in the field of D2D direct discovery of resources and can solve problems such as inability to receive data

Active Publication Date: 2017-05-31
BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, during the direct discovery process of D2D terminals, the discovery transmission resource pool and the discovery reception resource pool used are configured based on broadband transmission, and narrowband terminals may not be able to receive all required data

Method used

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  • D2D direct discovery resource selection method and system
  • D2D direct discovery resource selection method and system
  • D2D direct discovery resource selection method and system

Examples

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Embodiment Construction

[0045] ProSe short-distance services include ProSe direct discovery and direct communication. In the prior art, there are two types of resource allocation for D2D direct discovery: Type 1 is broadcast type, and the allocation of resources occupied by direct discovery signals is based on a non-UE-specific method, which is independently selected by the terminal and is applicable to UEs within coverage and UEs outside coverage. UE; Type 2 is a dedicated type. The allocation of resources occupied by the direct discovery signal is based on a UE-specific method, allocated by the base station, and applicable to UEs within the coverage.

[0046] In the existing direct discovery, there are two discovery transmission modes: ModeA, which uses a single discovery protocol message for direct discovery announcement (Announcement), which belongs to the broadcast type; ModeB, which uses two discovery protocol messages for direct discovery request and direct discovery. Discovery response (Solic...

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PUM

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Abstract

The invention relates to a D2D direct discovery resource selection method and system. The selection method comprises the following steps: a remote terminal and a relay terminal respectively receive a direct discovery resource pool set configured by a base station; the remote terminal determines a discovery transmission resource, and sends a direct discovery request message to the relay terminal on the determined discovery transmission resource; the relay terminal receives the direct discovery request message, and obtains the terminal type of the remote terminal; when the remote terminal is a narrow band terminal, the relay terminal selects a discovery transmission resource pool from the direct discovery resource pool set, and sends a direct discovery response message to the remote terminal on the selected discovery transmission resource corresponding to the discovery transmission resource pool; and the remote terminal selects a discovery receiving resource pool from the direct discovery resource pool set, and receives the direct discovery response message on the selected discovery receiving resource corresponding to the discovery receiving resource pool. By means of the scheme, the fact that the narrow band terminal can perform a normal D2D direct discovery process.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and system for selecting D2D direct discovery resources. Background technique [0002] In recent years, the Third Generation Partnership Project (The 3 rd Generation Partnership Project, 3GPP) Long Term Evolution (Long Term Evolution, LTE) technology develops rapidly, and has been widely applied in various technical fields. A direct-to-device (Device to Device, D2D) technology refers to a technology that allows user equipment (User Equipment, UE) to directly communicate with each other by multiplexing cell resources under the control of a communication system. The D2D technology can increase the spectral efficiency of the cellular communication system, reduce the transmit power of the UE, and solve the problem of lack of spectrum resources in the wireless communication system to a certain extent. [0003] With the development of Internet of Things technol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W76/02H04W76/04
CPCH04W76/12H04W76/14H04W76/23
Inventor 高兴航徐伟杰潘振岗
Owner BEIJING SPREADTRUM HI TECH COMM TECH CO LTD