Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Performance analysis method of d2d cellular heterogeneous network based on queuing theory

A heterogeneous network and analysis method technology, applied in transmission monitoring, electrical components, transmission systems, etc., can solve the problems of insufficient consideration of random arrival reliability requirements and low complexity

Active Publication Date: 2019-09-06
正链科技(深圳)有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems that the existing D2D cellular heterogeneous network performance analysis methods do not fully consider the random arrival of user services in the system, not always data waiting to be sent, reliability requirements, and practical application of low-complexity algorithms, the present invention proposes a A performance analysis method for D2D cellular heterogeneous networks based on queuing theory, aiming at the scenario where D2D users multiplex the uplink channel of cellular users, considering the influence of D2D transmission performance on the distance between cellular users and D2D receivers, and considering the limited dynamic service arrival model , the algorithm is reliable, the complexity is low, and the system performance can be accurately analyzed

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
  • Performance analysis method of d2d cellular heterogeneous network based on queuing theory
  • Performance analysis method of d2d cellular heterogeneous network based on queuing theory
  • Performance analysis method of d2d cellular heterogeneous network based on queuing theory

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Step 1: Establish a system model;

[0081] The present invention is aimed at a special application scene, comes from practical application, and the scene setting is meticulous and reasonable, and has practical guiding significance. Such as figure 1 As shown in , assuming that in a single-cell scenario, N cellular users occupy N orthogonal channels, record their set as There are M D2D user pairs in total, and the set is D={1, 2,..., M}. Cellular users and D2D users are uniformly distributed in the cell. Assuming N>M, a pair of D2D users only multiplex one cell For the user's uplink channel, in order to reduce system overhead, the D2D user randomly selects a multiplexed channel, and any D2D receiving end is only interfered by the cellular user sharing the channel with it. This paper only considers large-scale fading, and the path loss model can be expressed as P(d)=P·d -α , where P represents the transmitted power, P(d) represents the received power measured at a dist...

Embodiment 2

[0111] In order to analyze the system performance from the perspective of ease of practical application, considering that the transmission performance of D2D is affected by the distance between the cellular user and the D2D receiver, the complexity of the algorithm is reduced, which is conducive to accurate analysis of system performance in real time. The present invention is further improved on the basis of Embodiment 1, specifically:

[0112] Such as figure 2 As shown, consider that in a single macro cell, a D2D receiver is divided into three ring-shaped areas centered on a D2D receiving end, divided by radius r, R, assuming that the maximum radius is still within the coverage of the macro cell, and R is the macro user’s D2D The maximum interference distance of the user, that is, when the distance between the macro user and the D2D receiving end is greater than R, the interference of the macro user to the D2D user can be ignored. When the macro user falls into the ring dom...

Embodiment 3

[0118] The present invention further improves on the basis of Embodiment 1. Under the assumed conditions of finite-state Markov model and Poisson service arrival, a two-dimensional Markov system model including channel and queue state is constructed for the D2D user system. , using the steady-state probability analysis system performance, high reliability. Specifically, the solution to the steady-state transition probability includes the following steps:

[0119] when Time:

[0120]

[0121] The above formula shows that when the queue length is less than the minimum sending rate of the time slot ΔT, no matter which sending rate it is in, all data packets in the queue can be sent completely.

[0122] when and Time:

[0123]

[0124] The above formula shows that at this time with the minimum sending capability (i.e.γ 1 ), can’t achieve state transfer, only with γ 2 and gamma 3 Send data, and can clear the original captain.

[0125] when and Time:

[0126] ...

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 performance analysis method of a D2D cellular heterogeneous network based on queuing theory and belongs to the mobile communication technology field. For a scene of a D2D user reusing a cellular user uplink channel, taking consideration of influence of a distance between the cellular user and a D2D reception end on D2D transmission performance and combining a limited dynamic business arrival mode, the performance analysis method is provided. The performance analysis method comprises steps that an interference zone of the D2D reception end is divided, statistics analysis is carried out according to probability of the cellular user falling into the interference zone, a data state of the D2D user is described through an M / G / 1 queuing model, transfer probability of the waiting-to-be-transmitted-data quantity in a D2D user buffering zone is analyzed through utilizing an embedded Markov chain, and average queue length, average throughout, average time-delay and packet loss ratio expressions are acquired through stable state step-by-step derivation; through system simulation, calculation correctness can be theoretically analyzed, and rationality of an established analysis model is proved.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and more specifically relates to a performance analysis method of a D2D cellular heterogeneous network based on queuing theory. Background technique [0002] The direct communication technology (Device-to-Device, D2D) in the cellular system allows the mobile terminal to use the licensed frequency band of the cellular system for point-to-point communication under the control of the cellular system, which can provide a communication method with higher spectrum and energy efficiency. , both in terms of communication methods and network structures, have great flexibility and scalability, and soon gained the attention of academia and industry. Sharing the spectrum between D2D and cellular users can improve spectrum utilization, but it also inevitably introduces interference between the D2D link and the cellular link. If D2D interferes too much with the cellular communication link, it will...

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): H04W24/06H04B17/391
Inventor 辛建芳
Owner 正链科技(深圳)有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com