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Cross layer design method of up resources of shared system by terminal direction connection technology

A technology of terminal direct connection and sharing system, which is applied in the cross-layer design field of terminal direct connection technology sharing system uplink resources, and can solve the problems of complex interference and so on.

Active Publication Date: 2015-04-15
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] Although the introduction of D2D terminals can bring additional gains to traditional cellular systems, it also makes interference more complicated
Existing Interference Coordination Techniques Are No Longer Applicable

Method used

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  • Cross layer design method of up resources of shared system by terminal direction connection technology
  • Cross layer design method of up resources of shared system by terminal direction connection technology
  • Cross layer design method of up resources of shared system by terminal direction connection technology

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Embodiment Construction

[0174] The present invention considers two system models, namely, Scenario A: intra-cell D2D communication and cellular users multiplexing uplink resource scenario and Scenario B: inter-cell D2D communication and cellular user multiplexing uplink resource scenario. Around resource allocation issues in different application scenarios.

[0175] around figure 1 For single-user scenarios, refer to image 3 , for the scenario where a single D2D communication pair and cellular users coexist in a cell, the specific implementation of the cross-layer design scheme is as follows:

[0176]In this scenario, there are mainly two types of interference, the interference of the D2D user to the BS and the interference of the CU1 to the D2D receiving end. In order to control these two interferences and take into account the performance of CU1 and D2D users, the resource allocation scheme is as follows:

[0177] Step 302: The BS firstly obtains the location information about the cellular user...

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Abstract

The invention relates to a cross layer design method of up resources of a shared system by the terminal direction connection technology. The method is used for conducting combined scheduling and optimization distribution on frequency, time, space and power resource by combining base stations, a D2D communication end physical layer, a link layer and a network layer. The method includes allowing D2D users to adopt the mode of simultaneously coordinating interference of the D2D client to a base state and interference of honeycomb users to the D2D client when the D2D users share up link resources of a honeycomb system to keep normal communication of a traditional user link and obtain effective gain brought by the D2D direction connection technology, and conducting cross layer resource distribution mode on the resources through the link self-adapting method. The cross layer design method is specifically applied to the following three scenes: 1) a single D2D communication pair and the honeycomb users coexist in a housing estate; 2) a plurality of D2D communication pairs and the honeycomb users coexist in the housing estate; and 3) a single D2D communication pair and the honeycomb users coexist between housing estates.

Description

technical field [0001] The present invention is aimed at the scenario where the uplink resources of the cellular system are shared by the direct-to-device (D2D) technology, and proposes a method for jointly scheduling and optimally allocating frequency, time, space, and power resources by combining the physical layer, the link layer, and the network layer. Background technique [0002] In order to overcome the limitations of the base station-centered cell service provision mode in the IMT-Advanced system in adapting to the development of local services brought about by the development of wireless multimedia services, the direct-to-device (D2D) technology is now introduced to improve the network structure and enhance coverage , Improve system capacity. [0003] The introduction of D2D technology into the cellular mobile communication system will form the coexistence of cellular communication and D2D communication. In addition to being a communication mode, D2D terminals are a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04W72/12
Inventor 孙君朱洪波邵世祥
Owner NANJING UNIV OF POSTS & TELECOMM
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