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A method for allocating wireless channel resources

A resource allocation and wireless channel technology, applied in the directions of transmission path sub-channel allocation, wireless communication, signaling allocation, etc., can solve the problems of increasing negotiation channel conflict, aggravating negotiation channel load, increasing communication delay, etc., to reduce control The effect of information overhead, reduction of negotiation times, and reduction of communication delay

Active Publication Date: 2020-04-03
JIANGSU ZHONGKE YILIAN COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this scheme, the data transmission requirements of the wireless communication nodes are dynamically changing. From the source communication node applying for resources to the target communication node replying the confirmation message, the source node may generate new data transmission requirements. In this way, it is necessary to New data transmission needs to apply for resources multiple times, which increases the number of negotiations, increases the load of the negotiation channel for the entire network, and also increases the probability of conflicts on the negotiation channel, which is not conducive to communication nodes for a single communication node power saving, and the new data requirements are not met in time, which increases the communication delay

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  • A method for allocating wireless channel resources
  • A method for allocating wireless channel resources
  • A method for allocating wireless channel resources

Examples

Experimental program
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Effect test

Embodiment 1

[0059] Assuming that node A has 5 symbols of data to be sent to node B at a certain moment, the wireless channel resource allocation method includes the following steps:

[0060] S1: The maximum number of symbols is determined to be 100 by using a static determination method;

[0061] S2: Before sending data, node A first queries NAV2 information and finds that there are 3 data channels fb, fc, and fd that are free, then randomly selects channel fd as the data channel from these three data channels, and sends it on the negotiated channel obtained through competition The RTS frame is sent to node B, and the RTS frame carries the number of symbols of node A's data to be sent 7, the maximum number of symbols that node A can occupy channel resources of 100, and the data channel fd that node A requires to occupy; the number of symbols of node A's data to be sent 7 includes the transceiving conversion of 1 symbol, the ACK frame of 1 symbol and the data to be sent of 5 symbols;

[0...

Embodiment 2

[0067] Assuming that node A has 5 symbols of data to be sent to node B at a certain moment, the wireless channel resource allocation method includes the following steps:

[0068] S1: Use a dynamic determination method to determine the maximum number of symbols, set Prate=100, Lavg=10 symbols, t=36×10 -6 Second, Lreq=15 symbols are substituted in formula (1), calculate and obtain maximum symbol number Smax to be 40 symbols;

[0069] S2: Before sending data, node A first queries NAV2 information and finds that there are 3 data channels fb, fc, and fd that are free, then randomly selects channel fd as the data channel from these three data channels, and sends it on the negotiated channel obtained through competition The RTS frame is sent to node B, and the RTS frame carries the number of symbols of the data to be sent by node A 7, the maximum number of symbols of the channel resources that node A can occupy is 40, and the data channel fd required by node A; the number of symbols ...

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Abstract

The invention discloses a method for allocating wireless channel resources, comprising four steps of determining the maximum number of symbols, applying for node wireless channel resources before sending data, confirming wireless channel resources by a target node and sending data by a source node. Through the present invention, the data transmission requirements of wireless communication nodes can be met in time, the number of negotiations is reduced, the control information overhead on the negotiation channel is reduced, and the negotiation channel is prevented from becoming more likely to conflict due to more control information when the network load is large. performance bottleneck. When the network load is light, the arrival frequency of the data packets is relatively slow, and the present invention does not cause performance deterioration; when the network load is large, the arrival frequency of the data packets is fast, and the present invention can utilize the allocated resources as much as possible to improve the The throughput of the wireless communication network reduces the total number of transmissions of the communication nodes, thereby reducing the power consumption of the communication nodes, and at the same time reducing the overall communication delay of the wireless communication network.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method for allocating wireless channel resources. Background technique [0002] Compared with traditional wireless communication networks, wireless ad hoc networks have the characteristics of fast networking, low requirements for infrastructure, and strong resistance to destruction. They are widely used in military communications, rescue and disaster relief, and intelligent transportation. [0003] Similar to the OSI model of the TCP / IP protocol stack, the underlying protocol stack of the wireless ad hoc network can also be divided into a physical layer (PHY), a medium access control layer (MAC) and a network layer (NET), among which the MAC layer is responsible for access control and wireless resource allocation. The MAC layer protocol will directly affect performance indicators such as network delay, throughput, and channel utilization. Therefore, choosing an appropriat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04W28/04H04W72/04
CPCH04L5/0055H04W72/0446H04W74/0841H04W72/52Y02D30/70
Inventor 于建超慕福奇吕欣岩
Owner JIANGSU ZHONGKE YILIAN COMM TECH CO LTD
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