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Multilayer time delay-capacity model for LTE (Long Term Evolution)

A delay and capacity technology, applied in electrical components, wireless communication, etc., can solve the problems of lack of consideration of nonlinear factors in complex networks, consideration of linear factors in packet length, etc.

Inactive Publication Date: 2011-10-19
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the defects of the prior art, solve the impact of the packet length on the delay in the traditional link capacity model, only consider the linear factor and lack the consideration of the non-linear factor in the complex network, propose a kind of for LTE multilevel delay-capacity model

Method used

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  • Multilayer time delay-capacity model for LTE (Long Term Evolution)
  • Multilayer time delay-capacity model for LTE (Long Term Evolution)
  • Multilayer time delay-capacity model for LTE (Long Term Evolution)

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Experimental program
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Embodiment

[0040] A multi-level delay-capacity model for LTE, the specific process of network delay and capacity calculation is as follows:

[0041] 1) Insert software probes at each end of the test in the network to measure the time stamp information of data packets passing through different layers at each end;

[0042] 2) Synchronize the clock of each terminal under test through the synchronization protocol;

[0043] 3) The continuous flow of probe data packets with the TOS area of ​​the IP header set to a specific value is transmitted from the transmitter to the receiver. Each group of data streams consists of data packets of the same size and is sent at a fixed time interval and average bit rate ;The application layer packet size can be set to different values ​​in different data streams, for example, select from 100 bytes to 1400 bytes at intervals;

[0044] 4) Record the time stamps left by the probe data packets at the transmitting end and the receiving end; for each data flow, k...

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Abstract

The invention relates to a multilayer time delay-capacity model for an LTE (Long Term Evolution), belonging to the technical field of wireless mobile communication. In the model, the expression of three parts contained in a data packet time delay is described and is expressed by adopting a polynomial mode; a polynomial coefficient is determined by adopting the process of the test; and the capacity of each layer is calculated according to the time delay of each layer, and thereby the multilayer time delay-capacity model for the LTE is obtained. Compared with the traditional model in which linear factors are only considered for the influence of packet size on the time delay, the multilayer time delay-capacity model takes the nonlinear factors in a complex network into consideration, gives out the nonlinear relationship of the time delay and the packet size and can be used for measuring and calculating the time delay and the capacity of each layer of link, thereby providing more proper relationship for the analysis of the performance of a flat network.

Description

technical field [0001] The invention relates to a multi-level delay-capacity model for LTE, belonging to the technical field of wireless mobile communication. Background technique [0002] With the rapid development of technology and the continuous increase of demand, users' requirements for network performance and functions are also gradually increasing. NGN (Next Generation Network) is an open network based on IP packet switching technology with softswitch as the core. It has three main characteristics on the whole: it is based on IP packet technology, has an open layered architecture, and network development is driven by services. The NGN network is becoming increasingly flat, that is, more functions are integrated into fewer protocol layers. NGN provides a variety of services including Internet and telecommunication services. It can use different transmission media and bandwidths for data transmission with guaranteed quality of service, and realize the separation of upp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/06
Inventor 卢继华卜祥元孙翰飞李祥明安建平
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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