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Time slot on-demand distribution method based on business load of self-organizing network

A self-organizing network and business load technology, applied in the field of communication, can solve the problems of channel resource waste, time slot utilization, no consideration of node business load, etc., and achieve dynamic adaptation to business load, high time slot utilization, and low control overhead Effect

Inactive Publication Date: 2018-01-09
国网四川省电力公司电力应急中心 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such protocols can only guarantee the conflict-free allocation of slot resources in the network, and do not consider the traffic load of nodes
Since nodes with different business loads have the same ability to obtain time slots, the time slots obtained by light-loaded nodes cannot be used by heavy-loaded nodes, which will directly lead to waste of channel resources, thereby affecting network throughput, delay, and packet delivery rate, etc. related performance
Therefore, in a network with unbalanced business load, the time slot allocation method of FPRP is unreasonable

Method used

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  • Time slot on-demand distribution method based on business load of self-organizing network
  • Time slot on-demand distribution method based on business load of self-organizing network
  • Time slot on-demand distribution method based on business load of self-organizing network

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Embodiment 1

[0049] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0050] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

Embodiment 1

[0052] figure 1 It is an on-demand time slot allocation process based on service load in the present invention.

[0053] figure 2 is a schematic diagram of the network topology in this embodiment, and a total of 5 nodes form a two-hop self-organizing network.

[0054] The TDMA frame structure adopted in this embodiment is as follows image 3 As shown, 1 TDMA frame has 1 reserved frame and 1 information frame in total. 10 reserved time slots and 10 information time slots constitute a reserved frame and an information frame respectively, each reserved time slot contains 4 contention time slots, therefore, there are 40 contention time slots in the reserved frame, in each A contention slot can complete a five-step reservation process.

[0055] Figure 4 Indicates the calculation results of μ and k by each node in the network at the beginning of the reserved frame. In this embodiment, the maximum length L of the sending buffer of the MAC layer of the network node is set to 6...

Embodiment 2

[0064] The locations of network nodes are randomly distributed in a rectangular area of ​​1500m×1500m. The entire network topology has connectivity. The communication range of each node is 300m, the packet length is 1024bits, the packet transmission rate is 1Mbps, and the service packet generation rate of each node is Obey the uniform distribution on the integer interval of [1,70] (unit: packet / second).

[0065] The frame format of the TDMA-MAC protocol is set as follows: 1 reserved frame and 3 information frames together constitute a complete TDMA frame, each reserved frame and each information frame has 16 time slots respectively, and the There is a one-to-one correspondence between reservation time slots and information time slots. Wherein, the length of each reservation time slot is 60 bits, and the length of each information time slot is 1024 bits. Each reservation time slot is divided into 4 contention time slots, and the length of each contention time slot is 15 bits, ...

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Abstract

The invention discloses a time slot on-demand distribution method based on a business load of a self-organizing network, which is characterized by including steps of step (1), calculating current business load Mu of a node according to the node information, and acquiring competition probability pb of the node calculated by a multi-jump bayesian algorithm within a current competition time slot; step (2), calculating mixed competition probability pc of the node; step (3), actively starting the participation in the time slot competition by the mixed competition probability; step (4), judging thecompetition result; step (5), adjusting the competition probability pb in a previous competition cycle according to the multi-jump bayesian algorithm so as to obtain a new competition probability pb;then performing step (6); step (6): re-calculating the mixed competition probability pc to be new mixed competition probability pc according to the current business load Mu and the new competition probability pb of the node; replacing the mixed competition probability pc of the previous competition time slot by the new mixed competition probability pc, and circularly carrying out the treating processes of steps (3), (4), (5), and (6).

Description

technical field [0001] The invention relates to the technical field of communication methods, in particular to a dynamic time slot allocation method for an ad hoc network based on service load. Background technique [0002] Ad hoc network is one of the important research hotspots in the field of wireless mobile communication in recent years. Its distributed and dynamic network topology and other characteristics put forward extremely high adaptability requirements for MAC (Media Access Control, Media Access Control) protocol. Compared with the traditional MAC protocol based on random contention, the MAC protocol based on TDMA (Time Division Multiple Access, Time Division Multiple Access) has better and more stable network transmission performance. The core problem is how to effectively allocate limited time slot resources. [0003] FPRP (see literature: C.Zhu, M.S.Corson.A five-phase reservation protocol (FPRP) for mobile ad hoc networks[J].Wireless networks, 2001,7(4):371-38...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W4/00
Inventor 邓创刘军曹永兴
Owner 国网四川省电力公司电力应急中心
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