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Method and device for measuring condition of channel between D2D (device-to-device) user equipment

A channel measurement and device user technology, applied in wireless communication, electrical components, etc., can solve problems such as the inability to realize effective scheduling of D2DUE resources, the inability to implement resource allocation and scheduling on the network side, and the inability to know the status of D2DUE channels.

Inactive Publication Date: 2014-04-02
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In D2D communication, service data is directly transmitted between D2D UEs, so the network side needs to configure D2D resources for D2D service data transmission for D2D UEs, because the channel status between UEs performing D2D communication is that the network side cannot directly Therefore, on the premise that the channel state between D2D UEs cannot be known, the network side cannot implement effective resource allocation and scheduling
In addition, in the D2D communication mode of semi-centralized scheduling, D2D UE has the ability to schedule the transmission of other D2D UEs, and can schedule and configure the data transmission of other D2D UEs within a certain resource. At this time, it is also necessary to obtain the channel between D2D UEs status information, otherwise the effective scheduling of D2D UE resources cannot be realized
However, the channel state between D2D UEs cannot be obtained by using the existing technology, so an effective solution needs to be proposed to realize the measurement of the channel state between D2D UEs, so as to achieve more efficient resource scheduling and improve the resource utilization of the system

Method used

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  • Method and device for measuring condition of channel between D2D (device-to-device) user equipment
  • Method and device for measuring condition of channel between D2D (device-to-device) user equipment
  • Method and device for measuring condition of channel between D2D (device-to-device) user equipment

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0169] Such as image 3 As shown, the eNB notifies UE1 of the configuration information related to channel measurement of UE2 through the RRC message instruction. After UE1 obtains the configuration information, it knows the specific resources and related parameters of UE2 transmitting the measurement signal, and can monitor the measurement signal of UE2;

[0170] Further, UE1 measures the channel measurement signal transmitted by UE2 under the instruction of eNB and / or UE2, and obtains the measurement result of the channel state between D2D UEs (here, the D2D channel between UE1 and UE2);

[0171] Preferably, UE1 can report to eNB and / or UE2 the measurement report generated according to the channel measurement according to the configuration instruction of eNB and / or UE2, and the reporting step of the channel measurement report is an optional step.

example 2

[0173] The eNB indicates to the UE1 the configuration information related to the measurement of the UE2 through RRC signaling. Specifically, the RRC message used may be a D2D Reconfiguration Message. Such as Figure 4 As shown, eNB sends a D2D Reconfiguration message to UE1, which includes configuration information related to UE2 measurement signal transmission, such as time domain / frequency domain resources corresponding to UE2 transmitting SRS, including subframe offset, frequency domain bandwidth, frequency hopping parameters, etc. , SRS transmission period, generation sequence, transmission power, etc.

[0174] After receiving the message, UE1 obtains the relevant configuration information of the measurement signal of UE2, and feeds back a D2D configuration complete (D2D Reconfiguration Complete) message to the eNB.

example 3

[0176] The eNB configuration instructs UE1 to periodically measure the SRS transmitted by UE2, and periodically report the D2D channel state information obtained from the measurement to the eNB, and the eNB configures dedicated PUCCH format 2 resources for UE1 to carry the D2D channel measurement report for UE1.

[0177] After UE1 completes the D2D channel state measurement with UE2 according to the instructions, it generates a measurement report, encodes and modulates the measurement report according to the configuration of the eNB, and carries the D2D channel on the allocated PUCCH format2 resources according to the processing method of PUCCH format2 The measurement report is sent to the eNB.

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Abstract

The invention discloses a method for measuring the condition of a channel between D2D (device-to-device) user equipment. As for a network side, the method comprises the following steps: the network side indicates measurement-related configuration information of transmitting terminal user equipment for measuring terminal user equipment in D2D communication, and the measurement-related configuration information of the transmitting terminal user equipment is configuration information configured by the network side for the transmitting terminal user equipment and used for measuring the channel, and comprises configuration information for measuring the channel of a honeycomb cell and / or configuration information used for measuring the D2D channel. The invention further discloses a device for measuring the condition of the channel between the D2D (device-to-device) user equipment, and when the equipment is a network side entity, the network side entity is used for indicating the measurement-related configuration information of the transmitting terminal user equipment for the measuring terminal user equipment in D2D communication. With the adoption of the method and device provided by the invention, the condition of the channel between the D2D user equipment can be measured.

Description

technical field [0001] The present invention belongs to the field of mobile communication, and in particular relates to a method and device for channel state measurement between D2D user equipment (UE, User Equipment) in device-to-device (D2D, Device-to-Device) communication. 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 UEs, the service data from UE1 to UE2 will first be transmitted to base station 1 through the air interface (abbreviated as air interface), and base station 1 transmits the user data to the base station through the core network 2. Base station 2 then transmits the above service data to UE2 through an air interface. The service data transmission from UE2 to UE1 adopts a similar processing flow. When UE1 and UE2 are located in the sam...

Claims

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Application Information

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IPC IPC(8): H04W24/02
Inventor 杨瑾梁枫吴栓栓袁明
Owner ZTE CORP
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