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Method and device for avoiding D2D communication interference

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

Active Publication Date: 2014-12-10
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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  • Method and device for avoiding D2D communication interference
  • Method and device for avoiding D2D communication interference
  • Method and device for avoiding D2D communication interference

Examples

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Embodiment 1

[0176] 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.

[0177] 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 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 for...

example 2

[0181] 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.

[0182] 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.

[0183] After UE1 receives these power control information f...

example 3

[0186] 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.

[0187] 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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Abstract

The present invention provides a method and device for avoiding D2D (Device-to-Device) communication interference, relates to the technical field of wireless communication, and solves the problem of interference on cellular transmission by D2D transmission. The method includes: obtaining, by user equipment, a D2D resource distribution approach and / or D2D power control information; and using, by the user equipment, the D2D resource distribution approach and / or D2D power control information for D2D transmission. The technical solution provided by the present invention is adapted to the network of the D2D technology, and achieves successful 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 terms of high data rate and proximity service support. Against this background of demand, Device-to-Device (Device-to-Device, D2D) technology came into being...

Claims

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Application Information

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Patent Type & Authority Applications(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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