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Data transmission method and device for device-to-device communication

A data transmission method and a technology of a data transmission device, which are applied in the field of mobile communication, can solve problems such as collisions, and achieve the effect of reducing head overhead

Active Publication Date: 2019-01-04
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, different UEs may choose the same D2D Communication resource, so there is a problem of collision

Method used

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  • Data transmission method and device for device-to-device communication
  • Data transmission method and device for device-to-device communication
  • Data transmission method and device for device-to-device communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0122] Embodiment 1: D2D BSR process (BSR is triggered based on the device, and the D2D buffer status of each D2D communication target is independently reported or jointly reported), the following is respectively from the D2D BSR parameter configuration, the D2D BSR trigger mechanism, the processing after the D2D BSR report, The D2D BSR reporting format clearly describes the D2D BSR process in four formats, as follows:

[0123] 1) D2D BSR parameter configuration; among them, the D2D BSR related parameters can be configured by the resource allocation control node based on the device, including any of the following parameters or combinations. Of course, for online scenarios, D2D and D2N can also reuse a set of D2D BSR parameters.

[0124] D2D retxBSR-Timer: a timer that disables D2D BSR reporting;

[0125] D2D periodicBSR-Timer: The timer for periodic D2D BSR reporting.

[0126] 2) D2D BSR trigger mechanism; among them, D2D BSR trigger is based on device trigger, and the trigge...

Embodiment 2

[0135] Embodiment 2: D2D BSR process (triggered based on D2D communication target, independent reporting of D2D buffer status for each D2D communication target), similarly, the following are respectively from D2D BSR parameter configuration, D2D BSR trigger mechanism, and D2D BSR processing after reporting , D2D BSR reporting format four clearly explain the D2D BSR process, as follows:

[0136] 1) D2D BSR parameter configuration; among them, the D2D BSR related parameters can be configured by the resource allocation control node based on the device or D2D communication target, including any of the following parameters or combinations. Of course, for online scenarios, D2D and D2N can also reuse one set BSR report parameters.

[0137] D2D retxBSR-Timer: a timer that prohibits D2DBSR reporting;

[0138] D2D periodicBSR-Timer: The timer for periodic D2DBSR reporting.

[0139] 2) D2D BSR triggering mechanism; D2D BSR triggering is based on D2D communication target triggering, and...

Embodiment 3

[0147] Embodiment 3: D2D Communication resource determination method for different D2D communication targets (centralized resource allocation)

[0148] The resource allocation control node allocates D2D Communication resources respectively based on the D2D BSR information for each D2D communication target reported by the device. If the D2D Communication resources in the system are limited, the resource allocation control node needs to comprehensively consider the priority of each device for D2D Communication according to its service request, the QoS parameters of the D2D Communication service requested by each device, and other information for resource allocation.

[0149] Once the resource allocation control node determines the resource allocation information for each D2D Communication sending device served by it, it may notify the corresponding D2D Communication sending device through resource allocation indication signaling. Wherein, the resource allocation indication informa...

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Abstract

The invention discloses a data transmission method and device for device-to-device communication. The data transmission method for device-to-device communication includes: determining the device-to-device D2D communication target corresponding to the sending user equipment UE; Corresponding resources: according to the resources corresponding to each D2D communication target, generate a MAC PDU corresponding to the D2D communication target, and use the resources corresponding to the D2D communication target to send the MAC PDU. The present invention generates a MAC PDU separately for each D2D communication target of the sending UE, thereby avoiding the multiplexing of data from one device to different D2D communication target devices in one MAC PDU, thereby reducing the header overhead of the MAC PDU, and It also ensures that the receiving device does not need to perform unnecessary blind detection, thereby achieving the purpose of saving power.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a data transmission method and device for device-to-device communication. Background technique [0002] 1. LTE D2N communication system [0003] In the LTE (Long Term Evolution, long-term evolution) system, the transmission and reception of data adopts the mode of centralized network control, that is, the uplink and downlink data of the user equipment UE are all sent and received under the control of the network. The communication between the UE and the UE is forwarded and controlled by the network, and there is no direct communication link between the UE and the UE. In this way, the data transmission between the UE and the network can be referred to as D2N (Device to Network, device to the network) transmission. [0004] The BSR (Buffer State Reporting, buffer state reporting) mechanism in the LTE D2N communication system is as follows: [0005] Purpose of BSRs: ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/02
CPCH04W52/0209H04W72/30H04W72/20H04W72/04H04W28/06H04W4/08H04W76/14H04W76/11H04W28/0278Y02D30/70H04W72/51
Inventor 赵亚利曾二林傅婧许芳丽
Owner DATANG MOBILE COMM EQUIP CO LTD