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D2D communication synchronization signal transmission method, D2D communication synchronization signal transmission system, sender and receiver

A technology of synchronous signal and transmission method, applied in the direction of wireless communication, synchronous device, electrical components, etc.

Active Publication Date: 2015-07-29
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are not any specific implementation details, which include how D2DSS and PD2DSCH are transmitted, the association between D2DSS and PD2DSCH, etc.

Method used

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  • D2D communication synchronization signal transmission method, D2D communication synchronization signal transmission system, sender and receiver
  • D2D communication synchronization signal transmission method, D2D communication synchronization signal transmission system, sender and receiver
  • D2D communication synchronization signal transmission method, D2D communication synchronization signal transmission system, sender and receiver

Examples

Experimental program
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Effect test

Embodiment

[0127] This embodiment provides a device-to-device communication synchronization signal transmission method, which is applied to the D2D sending end, including:

[0128] The D2D sending end sends the D2D synchronization signal D2DSS on the time-frequency resources pre-configured on the network side; where the pre-configured time-frequency resources refer to n groups of synchronization resources reserved on the D2D transmission bandwidth for carrying synchronization signals , and use the D2DSS located on each group of synchronization resources to determine the frequency domain position of the group of synchronization resources in the subframe, where n is a positive integer.

[0129]Wherein, before sending the D2DSS, the method further includes:

[0130] The D2D sending end negotiates with the D2D receiving end to send and receive the D2DSS on the time-frequency resources preconfigured on the same network side.

[0131] Wherein, the D2DSS includes: a D2D primary synchronization...

application example 1

[0241] If there is only 1 set of synchronized resources, such as Figure 9 As shown, the corresponding relationship between the frequency domain position of the group of synchronization resources in the subframe and the time domain position of PD2DSS and SD2DSS is shown:

[0242] When the set of synchronization resources is located in the middle of the D2D transmission frequency band on RBs, such as Figure 9 (a) shown. At this time, PD2DSS and SD2DSS each occupy one SC-FDMA symbol, PD2DSS is located in the third symbol of slot1, and SD2DSS is located in the last symbol of slot0.

[0243] When the set of synchronization resources is located in the middle of the non-D2D transmission frequency band, for example, the upper edge of the D2D transmission frequency band is the starting position on RBs, such as Figure 9 As shown in (b), PD2DSS is located on the penultimate SC-FDMA symbol of slot0, and SD2DSS is located on one SC-FDMA symbol before PD2DSS.

[0244] The D2D rece...

application example 2

[0246] The two sets of synchronization resources preconfigured on the network side are respectively located at the upper / lower frequency band edges of the D2D transmission bandwidth, such as Figure 10 As shown, the corresponding relationship between the frequency domain positions of the two groups of synchronization resources and the time domain positions of PD2DSS and SD2DSS is given:

[0247] The frequency domain location of the first group of synchronization resources is: starting from the edge of the upper frequency band of the D2D transmission bandwidth RB, at this time, each of PD2DSS and SD2DSS occupies one SC-FDMA symbol, and PD2DSS is located on the last SC-FDMA symbol of the first half of the subframe, and SD2DSS is located on the SC-FDMA symbol immediately after PD2DSS. on the FDMA symbol;

[0248] The frequency domain location of the second group of synchronization resources is: starting from the lower frequency band edge of the D2D transmission bandwidth on R...

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Abstract

A method and a system for transmitting a D2D communication synchronization signal, a sending end, and a reception end. The method comprises: a device-to-device (D2D) sending end sending a D2D communication synchronization signal (D2DSS) on time-frequency resources preconfigured on a network side, the preconfigured time-frequency resources referring to n groups of synchronization resources reserved on a D2D transmission bandwidth and used for bearing the synchronization signal; and determining, according to the D2DSS on each group of the synchronization resources, a frequency domain position of the group of the synchronization resources in a subframe, n being a positive integer.

Description

technical field [0001] The present invention relates to the field of wireless communication, and in particular to a device-to-device (Device-to-Device, D2D for short) communication synchronization signal transmission method and system, a sending end and a receiving end. Background technique [0002] Because the cellular communication system realizes the multiplexing of limited spectrum resources, the wireless communication technology has been developed vigorously. In a cellular system, when there is a service to be transmitted between two user equipments (UE1), the service data from user equipment 1 (UE1) to user equipment 2 (UE2) will first be transmitted to the base station through the air interface 1. Base station 1 transmits the user data to base station 2 through the core network, and base station 2 then transmits the above service data to UE2 through the air interface. The service data transmission from UE2 to UE1 adopts a similar processing flow. Such as figure 1 A...

Claims

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Application Information

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IPC IPC(8): H04W56/00H04W72/04
CPCH04W56/002
Inventor 袁明夏树强吴栓栓袁弋非杨瑾
Owner ZTE CORP
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