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D2D (Device to Device) resource allocation method and base station

A technology of resource allocation and resource allocation information, applied in the field of D2D resource allocation methods and base stations, which can solve problems such as resource collisions and mutual interference between vehicle-mounted D2D terminals, and achieve the effects of reducing the probability of resource collisions, reducing switching, and efficient allocation

Active Publication Date: 2017-01-18
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The time-frequency resources allocated by base station A to vehicle-mounted D2D terminal A in its coverage area are the same as the time-frequency resources allocated by base station B to vehicle-mounted D2D terminal B in its coverage area. Vehicle-mounted D2D terminal B resides under base station B, while vehicle-mounted D2D terminal A moves to the coverage area of ​​base station B. When vehicle-mounted D2D terminal A moves into the coverage area of ​​base station B, resource collision between vehicle-mounted D2D terminal A and vehicle-mounted D2D terminal B will occur, causing the two vehicle-mounted D2D terminals to interfere with each other.
[0006] At present, for D2D communication involving cellular networks, how to reasonably allocate D2D resources to reduce the probability of resource collisions in D2D resources, there is no clear solution

Method used

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  • D2D (Device to Device) resource allocation method and base station
  • D2D (Device to Device) resource allocation method and base station
  • D2D (Device to Device) resource allocation method and base station

Examples

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Embodiment 1

[0145] combine Figure 4 , Figure 4 In , the coverage area of ​​each base station in the cellular network includes only one cell, and the diameter of each cell is the minimum spatial reusable distance of D2D resources. Figure 4 The base station corresponding to a cell in the middle receives the location information of the D2D terminal and the D2D resource allocation information of the D2D terminal sent by the base station corresponding to the adjacent cell in its coverage area. The D2D terminal here is a vehicle-mounted D2D terminal.

[0146] Such as Figure 4 As shown, the D2D resource information area of ​​the base station in the middle consists of 6 cells adjacent to the base station.

[0147] Figure 4 , the base station obtains the location information of the vehicle-mounted D2D terminal in the coverage area of ​​the base station and the D2D resource allocation information of the vehicle-mounted D2D terminal through the D2N link, and at the same time, the base statio...

Embodiment 2

[0151] combine Figure 5 , Figure 5 In , the coverage area of ​​each base station in the cellular network includes 7 cells, and the diameter of each cell is the minimum spatial reusable distance of D2D resources. Base station The base station is responsible for managing and allocating the D2D resources of the D2D terminals within its coverage area, where the D2D terminals are vehicle-mounted D2D terminals.

[0152] Such as Figure 5 As shown, the D2D resource information area of ​​the base station in the middle is composed of 12 cells adjacent to the boundary of the coverage area of ​​the base station.

[0153] Figure 5 , the base station obtains the location information of the D2D terminal of the vehicle-mounted D2D terminal in the coverage area of ​​the base station and the D2D resource allocation information of the D2D terminal through the D2N link, and at the same time obtains the D2D resource allocation information of the vehicle-mounted D2D terminal in each cell in ...

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Abstract

The invention provides a D2D (Device to Device) resource allocation method and a base station. The D2D resource allocation method comprises the steps that the base station receives location information of a D2D terminal and D2D resource allocation information of the D2D terminal which are sent by an adjacent base station of the base station; the base station allocates D2D resources for a D2D terminal in a coverage area of the base station according to the location information of the D2D terminal and the resource allocation information of the D2D terminal which are sent by the adjacent base station and location information of the D2D terminal and D2D resource allocation information of the D2D terminal in the coverage area of the base station. By adopting the method provided by the invention, the base station can allocate the D2D resources more reasonably, the probability of resource collision occurred in allocated D2D resources is reduced, and switching of the D2D resources is reduced, so that allocation of the D2D resources is carried out reasonably and efficiently.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and in particular to a D2D (Device to Device, device to device, also translated as D2D terminal direct connection) resource allocation method and a base station. Background technique [0002] In the traditional cellular communication technology, services such as voice and data of two D2D terminals interact through the base stations (Evolved Node B, eNode B) where they reside respectively and the core network. In order to improve transmission efficiency between D2D terminals, a technology for direct communication between D2D terminals, that is, a D2D technology, is currently proposed. When the distance between the D2D terminals is very close, the D2D communication mode can be used to realize the interaction, and at this time, the D2D terminals do not need to interact with services such as voice and data through the base station. [0003] The D2D communication that the cellu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/00H04W72/04
CPCH04W72/51H04W4/00
Inventor 唐纪晔赵丽林琳冯媛
Owner DATANG MOBILE COMM EQUIP CO LTD
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