Interference management method under partial channel state information in uplink

A technology for channel state information and interference management, applied in the uplink field of heterogeneous wireless networks, can solve the problems of increasing measurement and information exchange overhead, reduce measurement and information exchange overhead, realize interference transfer, and suppress cross-layer interference. Effect

Active Publication Date: 2018-12-21
XIDIAN UNIV
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  • Claims
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Problems solved by technology

However, this article uses all the channel state information measured by the user, which increases the measurement and information interaction overhead

Method used

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  • Interference management method under partial channel state information in uplink
  • Interference management method under partial channel state information in uplink
  • Interference management method under partial channel state information in uplink

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Embodiment Construction

[0042] Below with reference to accompanying drawing, technical scheme and effect of the present invention are further described:

[0043] refer to figure 1 , the application system of the present invention includes a macro base station M, E home base stations and Ω users, and the Ω users are randomly distributed within the coverage of the macro base station. Each user can only connect to one base station, and each sub-channel under the base station can only be allocated to one user. In order to improve resource utilization, the home base station and the macro base station adopt a co-channel deployment method, and the spectrum allocation of the home base station can be allocated according to the existing graph theory method: adjacent home base stations use orthogonal spectrum, and the distance is relatively long The same frequency spectrum is used between femtocells.

[0044] refer to figure 2 , the implementation steps of the present invention are as follows:

[0045] Ste...

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Abstract

The present invention disclosed the interference management method under some channel status information in the uplink link, which mainly solves the problem of the existing technology resource distribution method information interaction overhead and the associated control method slowly convergence.The realization step is: 1) Hongji Station adopts historical sub -gradient decline method to control all users; 2) home base stations to allocate resource allocation according to the structured home user utility functions as associated with each user; 3) Hongji Station First of allIn order to associate each user, select a reference home base station, and then allocate resource allocation to each user associated to each user based on the constructed macro user effectiveness.The present invention not only reduces cross -layer interference and information interaction overhead, but also increases the convergence speed of system throughput and associated control, which can be used for the heterogeneous wireless network coexisting with family base stations.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to an interference management method of joint correlation control and resource allocation under partial channel state information in an Orthogonal Frequency Division Multiple Access (OFDMA) system, which can be used in heterogeneous wireless networks where macro base stations and home base stations coexist. uplink. Background technique [0002] Studies have found that about 50% of voice services and 70% of data services take place indoors. In order to meet the increasing data transmission demands of users, operators build a large number of femtocells under traditional macro base stations, forming a heterogeneous wireless network where macro base stations and femtocells coexist. [0003] In the downlink of the heterogeneous wireless network, since the transmission power of the home base station is very small, the macro user cannot perceive the channel stat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/08
CPCH04W72/542
Inventor 赵林靖张燕张岗山张顺李钊刘勤
Owner XIDIAN UNIV
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