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A method for determining the throughput rate of p-persistent csma under the asynchronous multi-packet receiving mechanism

A multi-packet receiving and determining method technology, applied in the direction of digital transmission system, data exchange network, electrical components, etc.

Active Publication Date: 2021-08-03
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, p-adherent CSMA is the basis of many CSMA algorithms. However, there is no method for determining the throughput rate of p-adherent CSMA under the asynchronous multi-packet receiving mechanism for arbitrary parameters and arbitrary access strategies.

Method used

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  • A method for determining the throughput rate of p-persistent csma under the asynchronous multi-packet receiving mechanism
  • A method for determining the throughput rate of p-persistent csma under the asynchronous multi-packet receiving mechanism
  • A method for determining the throughput rate of p-persistent csma under the asynchronous multi-packet receiving mechanism

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Embodiment 1

[0079] The present invention adopts MATLAB software to implement the method, the number of devices in the network is N=10,15,...,40, the ability to receive multiple packets is M=3,5, and the average length of data packets is Λ=17. Assuming that all network devices are within the interference range of each other, the data arrival is in a saturated state. Consider the following three p-persistent CSMA access strategies. Option 1: Given satisfy When , each device to be sent sends a data packet with the optimal fixed probability p. Option 2: Given satisfy When , each device to be sent sends a data packet with the optimal fixed probability p. Scheme 3: Access probability p r =(M'-r) / (N-r), the simulation traverses the optimal M', and

[0080] figure 2 It is a schematic diagram of the throughput performance of the three strategies as the number of devices N changes. It can be observed that the theoretical and simulation results under the three strategies are consiste...

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Abstract

The present invention provides a method for determining the CSMA throughput rate under the asynchronous multi-packet receiving mechanism. Lower the expected value of the successfully sent data packet length and the expected value of the number of new communication devices added in the next time slot, and then determine the throughput rate. The invention can accurately predict the throughput rate under any access strategy, and thus can provide help for the effective implementation of the p-persistent CSMA algorithm under the asynchronous multi-packet receiving mechanism.

Description

technical field [0001] The invention relates to the technical field of wireless network communication, in particular to a method for determining p-persistent CSMA throughput rate under an asynchronous multi-packet receiving mechanism. Background technique [0002] Benefiting from the advantages of distribution and scalability, the Carrier Sense Multiple Access (CSMA) algorithm is widely used in various access protocols, such as IEEE 802.11 and IEEE 802.15.4. Most of the previous research on CSMA algorithm assumes that wireless devices only have single packet reception (SPR) capability, that is, they cannot successfully receive multiple mutually interfering data packets at the same time. Based on the above limitations, the CSMA algorithm under the M-Multi-Packet Reception (M-MPR) mechanism has become a research hotspot in recent years. This mechanism stipulates that at most M simultaneously transmitted data packets can be successfully received. Nevertheless, most of such st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/26H04W24/02
CPCH04L41/142H04L41/147H04L43/0888H04W24/02
Inventor 宫傲宇张杰徐达陈蕾张一晋束锋桂林卿
Owner NANJING UNIV OF SCI & TECH