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A link scheduling method based on minimum co-channel interference

A link scheduling and co-channel interference technology, which is applied in the field of link scheduling based on minimum co-channel interference, can solve the problems of affecting user QoS and failure of link scheduling to achieve strong interference management capabilities and low co-channel interference Effect

Inactive Publication Date: 2019-11-19
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the transmission phase, the pairing and scheduling of link transmission between users is very critical. If the pairing and scheduling of link pairs is not ideal, many links will be caused by excessive interference. However, it cannot be successfully scheduled, which affects the user's QoS (Quality of Service)

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  • A link scheduling method based on minimum co-channel interference
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  • A link scheduling method based on minimum co-channel interference

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Embodiment Construction

[0033] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] Take a cell as an example. There is a base station in the middle of the cell, and N users are evenly distributed in the radius R of the base station. B Inside. The user set is U={u 1 ,u 2 ,...,U N }. The network file library has M files of equal size, which are respectively denoted as f 1 ,f 2 ,...,F M .

[0035] Assuming that each user has cached a file from the file library and independently requests a file from the file library, the request probability obeys the Zipf distribution, that is, file f i The request probability is:

[0036]

[0037] Where γ r It is to request Zipf distribution parameters.

[0038] Because each user can cache files from the wireless D2D network. In addition to obtaining from the base station, users can obtain the files they need from themselves or from neighboring users. Obtaining files from oneself requires t...

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Abstract

The invention belongs to the technical field of wireless communication, and in particular relates to a link scheduling method based on minimum co-channel interference. The core idea of ​​the technical solution of the present invention is to use the potential D2D link that causes the least co-channel interference to the scheduled link as a new scheduled link. Compared with the traditional technology, the method of the present invention has stronger interference management capabilities. The traditional link scheduling method mainly considers potential D2D links according to channel gain, so that the scheduled D2D links have sufficient signal power; However, for co-channel interference, they do not handle it very well. Generally speaking, considering the interference last will cause all scheduled D2D links to lose SINR, thereby reducing the performance of the algorithm; on the contrary, the method of the present invention starts from The same-channel interference is considered in the scheduling process, which ensures that the same-frequency interference between all scheduled D2D links is minimized.

Description

Technical field [0001] The invention belongs to the technical field of wireless communication, and specifically relates to a link scheduling method based on minimum co-frequency interference. Background technique [0002] With the continuous development of technology, smart phones and tablet computers have become popular, and a large number of new wireless service applications have emerged, such as web browsing, video, WeChat, Weibo, etc. This makes wireless mobile communications penetrate from the initial call function to office and entertainment Every aspect of life, such as, social networks, has also contributed to the rapid growth of global mobile data traffic. Wireless video services have become one of the main drivers of wireless data traffic. The rapid growth of data traffic has brought a huge burden to the current wireless communication system, especially during the peak period of communication, the wireless communication network has great pressure. [0003] In recent yea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/02H04W72/12
CPCH04W28/0236H04L67/5681H04W72/543
Inventor 赵国栋林思华彭绍秦陈智
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA