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Device-to-device communication interference avoidance method and device

A technology for device communication and interference avoidance, applied in wireless communication, network data management, power management, etc., can solve problems such as D2D transmission and cellular transmission interference

Active Publication Date: 2019-08-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The present invention provides a device-to-device communication interference avoidance method and device, which solves the problem of D2D transmission interfering with cellular transmission

Method used

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  • Device-to-device communication interference avoidance method and device
  • Device-to-device communication interference avoidance method and device
  • Device-to-device communication interference avoidance method and device

Examples

Experimental program
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Embodiment 1

[0177] An embodiment of the present invention provides a device-to-device communication interference avoidance method, in which a user equipment uses D2D power control information to perform interference avoidance.

[0178] The UE1 system with the D2D communication function is pre-configured with the maximum transmission power and the minimum transmission power allowed for D2D transmission. In addition, the system may also pre-configure the D2D transmission with respect to the allowed signal-to-noise ratio threshold of the base station. These power control information can be the default value of the system, or built in the UE, or it may be obtained from the D2D server or the short-distance server or from the core network element MME (via NAS message) after the UE accesses the network, such as Figure 4 shown. The system can use exactly the same power control information configuration as above, and it is also possible to adopt different power control information configurations...

example 2

[0182] An embodiment of the present invention provides a device-to-device communication interference avoidance method, in which a user equipment uses D2D power control information to perform interference avoidance.

[0183] The UE1 serving base station with the D2D discovery function periodically sends the maximum transmission power and / or minimum transmission power allowed for D2D transmission and / or the SNR threshold allowed for D2D transmission relative to the base station through SIB broadcast, such as Figure 5 shown. The power control information sent by broadcasting may only include information about the maximum sending power, or may only include information about the signal-to-noise ratio threshold. Each cell can use exactly the same power control information configuration, and it is also possible to use different power control information for different cells and processing capabilities of the base station.

[0184] After UE1 receives these power control information f...

example 3

[0187] An embodiment of the present invention provides a device-to-device communication interference avoidance method, in which a user equipment uses D2D power control information to perform interference avoidance.

[0188] UE1 capable of D2D communication can receive from the serving base station the maximum transmit power and / or minimum transmit power allowed for D2D transmission and / or the SNR threshold allowed for D2D transmission relative to the base station, which is sent through dedicated signaling, such as Figure 6 shown. The proprietary information sent by the base station may be RRC signaling, and the existing RRC connection establishment or RRC connection reconfiguration message may be reused, or a new RRC message may be designed to carry the D2D power control information. The power control information sent through the dedicated signaling may only include maximum transmit power information, or may only include signal-to-noise ratio threshold information. Each UE s...

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PUM

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Abstract

A method and apparatus for preventing D2D communication interference, relating to the technical field of wireless communication, and resolving the problem of interference by D2D transmission on cellular transmission. The method comprises: a user device acquires a D2D resource allocation mode and / or D2D power control information; the user device uses the D2D resource allocation mode and / or the D2D power control information to implement D2D transmission. The present technical solution is suitable for use in a D2D technology network, allowing smooth implementation of D2D transmission and uplink cellular transmission.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a device-to-device communication interference avoidance method and device. Background technique [0002] With the development of wireless multimedia services, people's demand for high data rate and user experience is increasing, which puts forward higher requirements on the system capacity and coverage of traditional cellular networks. On the other hand, application scenarios such as public security, social networking, short-distance data sharing, and local advertising have gradually increased people's demand for understanding and communicating with nearby people or things (such as proximity services, Proximity Services). The traditional base station-centric cellular network has obvious limitations in high data rate and proximity service support. Against this background of demand, Device-to-Device (Device-to-Device, D2D) technology came into being. The ap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04W52/14
CPCH04W8/005H04W52/383
Inventor 陈琳吴栓栓刘锟戴博李大鹏
Owner ZTE CORP
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