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A Link Scheduling Method Based on Segmentation

A link scheduling and link technology, which is applied in machine-to-machine/machine-type communication services, electrical components, transmission systems, etc., can solve problems such as links cannot be successfully scheduled, users cannot successfully obtain files, etc., and achieve strong interference Effects of management ability and throughput increase

Active Publication Date: 2019-08-30
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • 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 not be able to be successfully scheduled. The user cannot successfully obtain the file they want

Method used

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  • A Link Scheduling Method Based on Segmentation
  • A Link Scheduling Method Based on Segmentation
  • A Link Scheduling Method Based on Segmentation

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Embodiment Construction

[0033] The technical solutions 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}, and the file repository of the network has M files of equal size.

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

[0036]

[0037] Among them, γ r is the requested Zipf distribution parameter.

[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 their neighboring users. Obtaining files from yourself requires caching t...

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Abstract

The invention belongs to the technical field of wireless communication, and in particular relates to a section-based link scheduling method. Compared with the traditional technology, the method of the present invention has a stronger interference management capability, and the simultaneous scheduling of all links will inevitably make most of the links suffer from relatively large interference, so that the number of scheduled links is reduced, which may lead to a decrease in throughput, etc. Performance degradation; the present invention proposes a method that can effectively increase system throughput by considering the introduction of a segmentation factor to manage the interference between links.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a segment-based link scheduling method. Background technique [0002] With the gradual popularization of smartphones and tablet computers and the continuous development of Internet of Things technology, 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 today's wireless communication system, and the traditional cellular communication system can no longer meet the current massive mobile service requirements. With the improvement of computing power and storage space of mobile terminals, the wireless caching network formed by the combination of D2D (Device-to-Device) communication and caching technology based on cellular network greatly relieves the communication pressure brought by a large amount of traffic. [0003] In the D2D wireless caching network, with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/70H04W72/08H04L29/08H04W72/54
CPCH04L67/06H04W72/541
Inventor 李立英彭绍秦赵国栋
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA