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A method and device for interference coordination on unlicensed spectrum

A technology of unlicensed spectrum and licensed spectrum, applied in the field of scheduling scheme in D2D communication, can solve the problem of incompatibility of RPT configuration method and DFS technology

Active Publication Date: 2019-07-12
SHANGHAI LANGBO COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The inventor found through research that when D2D communication occurs on the unlicensed spectrum, a problem that needs to be solved is the incompatibility between the RPT configuration method and the DFS technology

Method used

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  • A method and device for interference coordination on unlicensed spectrum
  • A method and device for interference coordination on unlicensed spectrum
  • A method and device for interference coordination on unlicensed spectrum

Examples

Experimental program
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Embodiment 1

[0075] Embodiment 1 illustrates the flow chart of D2D communication, as attached figure 1 shown. attached figure 1 Among them, UE U1 is a D2D sending UE, and the corresponding D2D receiving UEs include UE U2.

[0076] For UE U1, in step S11, the first signaling is sent, the first signaling indicates the first RPT, and the first RPT includes N first-type transmission spaces; in step S12, the N1-th Send D2D signals in one type of transmission space, and keep zero transmission power in the remaining N-N1 first-type transmission spaces; in step S13, transmit D2D signals in N2 second-type transmission spaces.

[0077] For UE U2, in step S21, the first signaling is received, the first signaling indicates the first RPT, and the first RPT includes N first-type transmission spaces; in step S22, in and only in the first RPT D2D signals are received in N1 first-type transmission spaces (that is, D2D signals are not detected in the remaining transmission spaces of the first RPT); or D2...

Embodiment 2

[0087] Embodiment 2 illustrates a schematic diagram of D2D resource scheduling, as shown in the attached figure 2 shown. attached figure 2 , the small squares marked with slashes are the transmission subframes of the first signaling, the small squares marked with backslashes are the transmission subframes of the second signaling, and the small squares marked D1-D4 are the first type of transmission The small squares marked with T3-T4 are the second type of sending space, and the small squares marked with thick lines are the sending spaces for transmitting D2D signals.

[0088] For the D2D sending UE, the first signaling (as shown by arrow F1) and the second signaling (as shown by arrows F2 and F3) are sent on the first carrier to indicate the first RPT and N2 second-type sending spaces respectively; Then send D2D signals in the N1 first-type transmission spaces (as shown in D1 and D2) in the first RPT, and keep zero transmission in the remaining N-N1 first-type transmissio...

Embodiment 3

[0096] Embodiment 3 illustrates another schematic diagram of D2D resource scheduling, as shown in the attached image 3 shown. attached image 3 In , the small square marked with a slash is the transmission subframe of the first signaling. The small squares marked with D1-D4 are the first type of sending space, the small squares marked with T1-T4 are the second type of sending space, and the small squares marked with thick lines are the sending space for transmitting D2D signals.

[0097] For the D2D sending UE, first send the first signaling on the first carrier (as shown by arrow F10) to indicate the first RPT; then in the N1 first-type transmission spaces in the first RPT (as shown by D1, D2) Send D2D signals, and keep zero transmission power in the remaining N-N1 first-type transmission spaces (as shown in D3, D4); then send them in the N2 second-type transmission spaces (as shown in T3, T4) D2D signal.

[0098] For the D2D receiving UE, first receive the first signali...

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Abstract

The invention proposes an interference coordination method and device on an unlicensed frequency spectrum. In view of the problem that the traditional RPT-based D2D allocation mechanism cannot adapt to burst interference on the unlicensed spectrum, the D2D sending UE sends signaling to configure the RPT, and at the same time explicitly or implicitly configures a backup sending space for the RPT, if The sending space of the RPT is not suitable for transmitting target D2D data, and the D2D sending UE sends the target D2D data in a substitute sending space. The scheme of the present invention is compatible with the DFS scheme, while ensuring the transmission robustness of the traditional RPT scheme. In addition, the present invention is compatible with the conference conclusions on D2D communication, and has good compatibility.

Description

technical field [0001] The present invention relates to a scheduling scheme in D2D (Device to Device, device-to-device) communication, in particular to a scheduling scheme based on LTE (Long Term Evolution, long-term evolution) D2D on unlicensed spectrum. Background technique [0002] In a traditional 3GPP (3rd Generation Partner Project, 3rd Generation Partnership Project) LTE system, data transmission occurs between a base station and a UE (User Equipment, user equipment). In 3GPP R12, D2D communication is established and discussed, and the essential feature of D2D is to allow data transmission between UEs. For FDD (Frequency Division Duplex, frequency division duplex) and TDD (Time Division Duplex, time division duplex) systems, 3GPP reached an agreement at the #73 meeting of RAN1 (RadioAccess Network Working Group1, the first radio access network working group) The conclusion is: the UE in the D2D system is not allowed to transmit and receive at the same time. Further,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/14
CPCY02D30/70
Inventor 张晓博
Owner SHANGHAI LANGBO COMM TECH CO LTD