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Interference coordination method and device in non-authorized frequency 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: 2016-08-24
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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  • Interference coordination method and device in non-authorized frequency spectrum
  • Interference coordination method and device in non-authorized frequency spectrum
  • Interference coordination method and device in non-authorized frequency spectrum

Examples

Experimental program
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Effect test

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, send the first signaling, the first signaling indicates the first RPT, and the first RPT includes N first-type sending spaces; in step S12, the N1 first-type sending spaces in the first RPT The D2D signal is transmitted in the space, and zero transmission power is maintained in the remaining N-N1 first-type transmission spaces; in step S13, the D2D signal is transmitted in the 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 the N1-th Receive D2D signals in one type of transmission space (that is, do not detect D2D signals in the remaining transmissi...

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 provides an interference coordination method and device in the non-authorized frequency spectrum. Aimed at solving the problem that a traditional RPT based D2D resource distribution mechanism cannot adapt to emergent interference in the non-authorized frequency spectrum, D2D sending UE sends signaling configuration RPT, a substitute sending space is configured for the RPT in an explicit or implicit manner, and if an RPT sending space is not suitable for transmitting target D2D data, the D2D sending UE sends the target D2D data in the substitute sending space. According to the invention, a DFS scheme is compatible, the transmission robustness of a traditional RPT scheme is ensured, conference conclusion related to D2D communication is compatible, and the compatibility is high.

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 held #73 meeting The conclusion reached above is: UEs in the D2D system are not allowed to transmit and receive simultaneously. Further, in order to avoid the interference of downlink data on D2D communication, UE occupies traditional uplin...

Claims

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Application Information

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