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Device-to-Device (D2D) communication method and device, and D2D communication control device

A device communication and device technology, applied in the field of communication, can solve problems such as limited D2D applications and inability to discover each other

Active Publication Date: 2016-01-27
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a device-to-device communication method and device, and a device-to-device communication control device, to at least solve the problem in the related art that due to the half-duplex feature of D2D communication, UEs that simultaneously send discovery signals cannot discover each other, which leads to The problem of limited application of D2D

Method used

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  • Device-to-Device (D2D) communication method and device, and D2D communication control device
  • Device-to-Device (D2D) communication method and device, and D2D communication control device
  • Device-to-Device (D2D) communication method and device, and D2D communication control device

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Experimental program
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Effect test

Embodiment 1

[0124] As a preferred implementation manner of the present invention, D2D discovery will be taken as an example for description.

[0125] In this preferred embodiment, the radio resources used for device discovery have a period, and the device discovery radio resources in each discovery resource period are divided into discovery resource units in a time division multiplexing and / or frequency division multiplexing manner. In a discovery resource period, the allocated device discovery radio resources are divided into discovery resource units, which may include: N*K discovery resource units, where N is a positive integer, which is the number of discovery resource units in the time direction; K is a positive integer, which is the number of discovered resource units in the frequency direction, and the position of each discovered resource unit corresponds to a coordinate (n, k), where n is an integer and 0≤n<N, and k is an integer and 0≤k<K. For example: the time length for discover...

Embodiment 2

[0141] As another preferred implementation manner of the present invention, D2D discovery will be taken as an example for description.

[0142] In this preferred embodiment, the hopping rules of the discovery resource groups between the discovery resource groups within the discovery resource period are predefined, and the inter-group hopping rules are used for the resources of the time-domain adjacent discovery resource groups within the discovery resource period Establish a mapping relationship between locations.

[0143] Figure 7 It is a schematic diagram of time-domain grouping of discovery resource units in a discovery resource period according to a second preferred embodiment of the present invention. Such as Figure 7As shown, the discovery resources in each period can be divided into four discovery resource groups from the time domain, and each discovery resource group can include several discovery resource units. Regarding the division method of the discovery resou...

Embodiment 3

[0151] As yet another preferred implementation manner of the present invention, D2D discovery will be taken as an example for description.

[0152] In this preferred embodiment, a hopping rule of the discovery resource between discovery resource periods is predefined, and the period hopping rule is used to establish a mapping relationship between resource positions of adjacent discovery resource periods.

[0153] Figure 9 is a schematic diagram of periodic resource allocation according to a preferred embodiment of the present invention. Such as Figure 9 As shown, establishing a mapping relationship between the resource positions of adjacent discovery resource periods means that any discovery resource in period p has a unique discovery resource corresponding to it in the discovery resources of period p+1; period p Any one of the discovery resources of +1 has a unique discovery resource corresponding to it among the discovery resources of period p+2.

[0154] It should be n...

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PUM

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Abstract

The invention discloses a Device-to-Device (D2D) method and device, and a D2D communication control device. In the abovementioned method, the position of a first resource is determined among D2D resources in a D2D resource period; according to the position of the first resource and a predefined hopping rule, the position of a second resource is determined; and D2D signals are sent on physical resources corresponding to the first resource and the second resource, or, a D2D signal is sent on the physical resource corresponding to the second resource. According to the technical scheme provided by the invention, a circumstance that different user equipment sends and monitors a D2D signal at the same time and thus the user equipment cannot receive the D2D signals from each other is avoided, thereby improving universality of the D2D communication method.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a device-to-device communication method and device, and a device-to-device communication control device. Background technique [0002] With the diversification of mobile communication services, such as the popularity of applications such as social networking and electronic payment in wireless communication systems, the demand for service transmission between users in close proximity is increasing. However, a device-to-device (D2D for short) communication mode between users in a short distance is attracting more and more attention because it can save power consumption of user terminals and improve spectrum utilization. figure 1 is a schematic diagram of performing D2D communication between user equipments according to related technologies. Such as figure 1 As shown, D2D means that the service data is directly transmitted from the source user equipment (User Equipment, referred...

Claims

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Application Information

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IPC IPC(8): H04W72/00
CPCH04W48/16H04W8/005H04W48/12H04W72/0446H04W72/0453H04L5/0012H04W72/53H04L5/1438H04W72/1215
Inventor 吴栓栓袁弋非戴博黄双红卢有雄
Owner ZTE CORP
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