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Frequency spectrum aggregation method based on business delay demands

A spectrum aggregation and time delay technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve the problem that discrete spectrum resources cannot be aggregated, and achieve the effect of improving spectrum utilization and minimizing packet loss rate.

Inactive Publication Date: 2012-12-26
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, due to the hardware limitation of the transmitter, the span S (unit: MHz) of the aggregated frequency band is not unlimited, which means that the aggregation device can only aggregate the available discrete spectrum resources within the maximum span S of the aggregation range , and the discrete spectrum resources beyond this range cannot be aggregated by the aggregation device

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  • Frequency spectrum aggregation method based on business delay demands
  • Frequency spectrum aggregation method based on business delay demands
  • Frequency spectrum aggregation method based on business delay demands

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Embodiment Construction

[0030] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] Assuming that there are K users in the network, and there are N discrete idle spectrums in space, the spectrum aggregation process of the present invention is as follows figure 1 As shown, firstly, users who need to allocate spectrum are selected. In order to minimize the user’s packet loss rate, the principle of selecting users in this method is to consider the user’s packet loss urgency, and assign priority to the user with the highest packet loss urgency, that is, the difference between the user’s maximum delay threshold and the current experience delay is the smallest, As shown in the following formula:

[0032] while K≠φ

[0033] (k)←argmin{T k -τ k}

[0...

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Abstract

The invention discloses a frequency spectrum aggregation method based on business delay demands, and relates to the technical field of wireless communication. According to the frequency spectrum aggregation method based on the business delay demands, by searching available discrete frequency bands in the space, and the optimal aggregation frequency band is selected for a user in an aggregation span range, wherein frequency spectrum is to be allocated to the user. According to the frequency spectrum aggregation method based on the business delay demands, packet-loss emergency degree of the user is fully considered, the frequency spectrum is optimally selected by combining the packet-loss emergency degree of the user with frequency spectrum survival time, package loss ratio of the user is minimized, time utilization rate of the frequency spectrum is improved at the same time, frequency spectrum switching of the user is reduced, users are accommodated as more as possible, and therefore frequency spectrum waste is avoided, and frequency spectrum efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a spectrum aggregation method based on service delay requirements. Background technique [0002] With the rapid development of various new wireless communication technologies, wireless networks have more and more demands on spectrum resources, so the shortage of spectrum resources has become one of the bottlenecks restricting the development of wireless communication. On the other hand, the utilization rate of some licensed spectrum is very low, and many spectrum resources have not been fully utilized for a period of time. In recent years, cognitive radio technology has gradually become a new research hotspot. Cognitive radio technology can perceive and utilize the spectrum holes existing in space, so it is considered to be an effective method to solve the shortage of spectrum resources and improve spectrum utilization. [0003] Different from traditional wireles...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04W72/04
Inventor 滕颖蕾张勇宋梅王莉刘媛媛李元峰翁航都晨辉王小军高鹏
Owner BEIJING UNIV OF POSTS & TELECOMM
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