Unlock instant, AI-driven research and patent intelligence for your innovation.

Spectrum resource allocation method and spectrum resource allocation system based on interference threshold in Femtocell network

A spectrum resource allocation and interference threshold technology, applied in the field of wireless communication, can solve problems such as ineffective guarantee of user service quality, neglect of user service quality, poor user experience, etc., to achieve system throughput and improve sub-channel utilization , Guarantee the effect of communication quality

Inactive Publication Date: 2018-06-29
SHANDONG UNIV
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this algorithm greatly improves the utilization rate of subcarriers, a high interference value is generated between users, which cannot effectively guarantee the quality of service (Quality of Service, QoS) of users, resulting in poor user experience
[0005] At present, when most researchers design subcarrier allocation algorithms in Femtocell networks, in order to improve spectrum resource utilization and increase network throughput, they often ignore user service quality.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Spectrum resource allocation method and spectrum resource allocation system based on interference threshold in Femtocell network
  • Spectrum resource allocation method and spectrum resource allocation system based on interference threshold in Femtocell network
  • Spectrum resource allocation method and spectrum resource allocation system based on interference threshold in Femtocell network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] In order to optimize the allocation of spectrum resources in the Femtocell network, reduce interference between users, and improve network throughput, the present invention proposes a spectrum resource allocation method based on an interference threshold. Figure 1-3 The flow of this program is given, and the specific implementation steps are as follows:

[0058] Step 1: Initialize Femtocell user number N and number, user address, user interference threshold Th, and home base station transmission power. The number of sub-channels available in the Femtocell network and numbered sequentially starting from 1.

[0059] Among them, the system bandwidth is divided into several orthogonal sub-channels by using OFDMA technology, and no spectrum interference will be generated between users accessing different sub-channels. M={1,...M} means that all Femtocells Available subchannels for the network. At the same time, the same user can occupy multiple orthogonal sub-channels.

...

Embodiment 2

[0088] This embodiment provides a system for allocating spectrum resources based on an interference threshold in a Femtocell network. The home base station FBSs periodically sends a reference signal, and the Femtocell user equipment FUEs periodically detects the reference signal and sends it to a computing device; the computing The device includes a memory and a processor, the memory stores an executable computer program, and when the processor executes the program, it realizes:

[0089] Determine whether there is interference between the home base stations FBSs according to the detected reference signal strength;

[0090] The Femtocell network is abstracted into an interference graph, wherein the FBSs are vertices, if there is interference between the two FBSs, there is a connection between the two FBSs;

[0091] assigning subchannels to FBSs based on the interference graph, each FBS can only be assigned to one subchannel at most;

[0092] Sub-channel reallocation is perform...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a spectrum resource allocation method and a spectrum resource allocation system based on interference threshold in a Femtocell network, the method comprises the following steps: Femtocell network FBSs (Femtocell Base Station) periodically send a reference signal, and Femtocell user equipment FUEs periodically detect the reference signal and determine whether interference exists among the FBSs according to the detected reference signal; the Femtocell network is abstracted into an interference pattern, wherein the FBSs are a peak, if interference exists between the two FBSs, a connection line exists between the two FBSs; a subchannel is allocated for the FBSs based on the interference pattern, each FBS at most can get one subchannel by allocation; and the subchannel is allocated again according to total interference signal strength on each FBS. The allocation method provided by the invention can improve utilization rate of the subchannel and increase fairness.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a spectrum resource allocation method and system based on an interference threshold in a Femtocell network. Background technique [0002] At present, more and more mobile communication services take place indoors, and people need greater network throughput to meet the growing demand for indoor communication. The traditional macro base station network is difficult to cope with the continuous and rapid growth of indoor communication services. Because the macro base station network cannot fully cover the indoor communication area, and when communicating with indoor users, it is vulnerable to the penetration loss of the wall, which greatly reduces the communication quality. The emergence of Femtocell technology has brought hope to the above-mentioned difficulties. In a Femtocell network, a Femtocell Base Station (FBS) is a low-cost, low-power consumption,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04W72/08
CPCH04W72/541
Inventor 曹叶文刘君
Owner SHANDONG UNIV