D2D (device to device) communication-based uplink interference coordination method in multi-operator network system

A network system and interference coordination technology, applied in wireless communication, electrical components, etc., to reduce or eliminate interference between operators, easy to implement, and avoid user complaints

Active Publication Date: 2013-09-04
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0015] In view of this, the purpose of the present invention is to provide a D2D communication-based uplink interference coordination method in a multi-operator network system, that is, a method for identifying strong interference sources and interfered terminals between operators through D2D communication. or O&M to process, coordinate the allocation of network resources, and reduce or eliminate inter-operator interference, thereby solving various problems or defects that cannot be solved by using ACIR to limit interference in the existing technology

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  • D2D (device to device) communication-based uplink interference coordination method in multi-operator network system

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[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0035] The technical scheme of the invention is not only applicable to the E-UTRA system, but also applicable to the problem of dealing with inter-operator interference in the UTRA or GSM network. Although macrocells are used as an example to illustrate the inventive point, the method can also be extended to hierarchical networks.

[0036] The basis of the method of the present invention is that D2D UEs can use white space frequency bands, industrial, scientific, medical ISM (Industrial Scientific Medical) frequency bands or other unlicensed frequency bands to establish communication links to exchange interference information. In addition, a D2D UE can communicate with its BS.

[0037] see Figure 4, introducing the following specific operation s...

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Abstract

A D2D (device to device) communication-based uplink interference coordination method in a multi-operator network system comprises the operating steps that (1), D2D UEs exchange respective inter-operator related interference information and make a decision that whether inter-operator potential interference exists; (2) a base station (BS) analyzes the received potential inter-operator interference information and decides whether uplink measuring is performed; (3) BS identifies the existence of the severe inter-operator interference and the honeycomb UE subjected to severe interference, thus indicating that the uncoordinated network deployment has a fault; and (4) interference coordination is carried out by resource allocation of the BS or the O&M (operation and maintenance) of an operation maintenance center. The method provided by the invention identifies the inter-operator strong interference source and an interfered terminal by the D2D communication and processes the same by the base station or O&M to coordinate the allocation of network resource, thus reducing or eliminating the inter-operator interference and further solving the problem that the interference cannot be solved by ACIR (adjacent channel leakage ratio) limitation.

Description

technical field [0001] The present invention relates to a communication method for supporting terminal direct D2D (Device-to-device) communication in a multi-operator network system, to be more precise, relates to an uplink interference coordination method based on D2D communication in a multi-operator network system, It belongs to the technical field of wireless communication. Background technique [0002] In the same area, there are usually multiple operators deploying networks with different architectures to provide users with a choice of corresponding communication services. Terminals in the network can communicate in two different modes: cellular communication mode and D2D communication mode. In the cellular communication mode, the terminal communicates with another user through the base station BS (BaseSation). While in the D2D communication mode, a terminal directly communicates with another terminal without central control. The main advantage of cellular mode comm...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/08H04W24/10
Inventor 彭涛漆渊刘子扬杨煜丰王文博
Owner BEIJING UNIV OF POSTS & TELECOMM
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