Device-to-device (D2D) resource allocation method and D2D resource allocation device

A technology of resource allocation and reference configuration, applied in the direction of machine-to-machine/machine-type communication services, electrical components, wireless communication, etc., to avoid inter-subframe interference

Active Publication Date: 2015-07-15
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a D2D resource configuration method and device to solve the problem of how to configure D2D subframes in the TDM multiplexing mode

Method used

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  • Device-to-device (D2D) resource allocation method and D2D resource allocation device
  • Device-to-device (D2D) resource allocation method and D2D resource allocation device
  • Device-to-device (D2D) resource allocation method and D2D resource allocation device

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Embodiment Construction

[0052] In the TDM multiplexing mode, if any uplink subframe is allowed to be used as a D2D subframe, it may cause interference to cellular communication.

[0053] For example, the first uplink subframe after the special subframe is configured as a D2D subframe. It is stipulated in the agreement that the first subframe after the special subframe is an uplink subframe, and configuring this subframe as a D2D subframe will not only interfere with cellular communication, but also cause the system to be unable to determine the PUCCH feedback of D2D UEs. TDD uplink and downlink reference configuration. Among them, the TDD uplink and downlink reference configuration fed back by PUCCH is used for D2D UE to receive cellular downlink data and ACK / NACK feedback, which is determined according to the TDD uplink and downlink configuration and D2D subframe configuration currently used by the cell. The reason why the TDD uplink and downlink reference configuration for PUCCH feedback is introd...

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Abstract

The invention discloses a device-to-device (D2D) resource allocation method and a D2D resource allocation device. The method comprises the steps of determining time division duplex (TDD) uplink configuration and downlink configuration used by a cell, and a D2D resource allocation period; according to the instruction of the TDD uplink configuration and downlink configuration, starting configuring a D2D subframe from the last uplink subframe of the D2D resource allocation frame in the D2D resource allocation period, wherein the first uplink subframe of the D2D resource allocation frame in the D2D resource allocation period is not used as the D2D subframe. Through adoption of the D2D resource allocation method for D2D subframe configuration, the D2D and user equipment (UE) can easily determine TDD uplink and downlink reference configurations fed back by a physical uplink control channel (PUCCH). If the D2D and the UE need to support transmission in an idle mode of radio resource control (RRC), the method can be adopted and can prevent inter-subframe interference due to timing offset.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and in particular to a device-to-device (Device-to-Device, D2D) resource configuration method and device. Background technique [0002] D2D, that is, terminal direct technology, refers to a method in which adjacent user equipment (User Equipment, UE) can transmit data through a direct link within a short distance without forwarding through a central node (ie, a base station). [0003] In the case of network coverage, the current 3rd Generation Partnership Project (3GPP) standard has determined that D2D transmission (including D2D discovery (discovery) and D2D communication (communication)) works on the uplink resource of the cellular network. For example: in the case of frequency division duplex (FDD), it works on the uplink carrier, and in the case of time division duplex (TDD), it works on the uplink subframe. [0004] At present, in the discussion of Long Term Evolution...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W8/14H04W72/04
CPCH04W4/70H04W72/0446
Inventor 赵锐高秋彬陈文洪彭莹
Owner DATANG MOBILE COMM EQUIP CO LTD
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