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Method and system for selecting d2d direct communication resources

A technology for communication resources and receiving resources, which is applied in the field of selecting D2D direct communication resources, and can solve problems such as bandwidth limitation, narrow bandwidth, and inability to perform D2D direct communication.

Active Publication Date: 2018-10-16
BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] Since the available bandwidth of eMTC / NB-IoT UE is narrow, the resources that can be monitored at the same time are limited by the bandwidth
In the D2D direct communication process, when eMTC / NB-IoT UE acts as the receiving end, the transmission resource configuration bandwidth of the sending end may exceed the available bandwidth of the eMTC UE or NB-IoT UE, or the receiving end cannot know the bandwidth used by the sending end. Transmission resources, at this time, eMTC UE or NB-IoT UE cannot correctly receive the required data, resulting in the inability to perform D2D direct communication

Method used

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  • Method and system for selecting d2d direct communication resources
  • Method and system for selecting d2d direct communication resources

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Embodiment Construction

[0037] With the rapid development of wearable devices, the 3GPP working group decided to introduce the 3GPP access method to wearable devices, adopt D2D technology, and use smart terminals as relays to connect wearable devices to 3GPP networks. Wearable devices connected to the 3GPP network can not only ensure the security and reliability of data, but also greatly reduce the power of wearable devices and save power consumption. The use of narrowband transmission technology between wearable devices and smart terminals, such as eMTC technology or NB-IoT technology, can reduce the complexity and cost of wearable devices, and further reduce the transmission power of wearable devices.

[0038] In the existing R12 and R13 versions of the 3GPP, the D2D technology only supports broadband data transmission. The eMTC / NB-IoT technology introduced in the R13 version only supports narrowband data transmission. Therefore, eMTC UE and NB-IoT UE can also be called narrowband terminals. The b...

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Abstract

A method and system for selecting D2D direct communication resources, the method comprising: a first terminal and a second terminal obtain each other's terminal type and identification information; the first terminal and the second terminal respectively receive information configured by a base station A set of direct communication resource pools, the set of direct communication resource pools matches the terminal type of the first terminal and the terminal type of the second terminal, and is suitable for carrying the first terminal and the second terminal for secondary chain data for direct communication; the first terminal and the second terminal respectively select a resource pool from the set of direct communication resource pools, and the receiving resource pool selected by the first terminal is the same as the resource pool selected by the second terminal The transmission resource pools are the same, and the transmission resource pool selected by the first terminal is the same as the reception resource pool selected by the second terminal. The above solution can ensure normal D2D direct communication between devices.

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 communication 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 tec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/02H04W72/04H04W4/70
CPCH04W72/02H04W4/70H04W72/51H04W72/23
Inventor 高兴航徐伟杰潘振岗
Owner BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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