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Broadcast station collaborative communication method in ultra short wave Ad Hoc network

A collaborative communication and ad hoc network technology, applied in electrical components, digital transmission systems, error prevention, etc., can solve the problems of low channel utilization, long synchronization and link establishment time, restricting network transmission performance, etc., and achieve high networking. effect of ability

Inactive Publication Date: 2012-07-18
PLA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest problem with ultra-short wave frequency hopping radio stations is that it takes a long time to synchronize and establish a link, especially when networking
[0005] In the TDMA mode, each radio station has precious opportunities to send data, so piggyback technology is often used to solve the problem of sending short frames (such as network layer routing request and response short frames, topology information short frames, neighbor information short frames, and data link layer responses) Short frame) the problem of low channel utilization
The data link layer in the TDMA network can use the response mechanism, but it cannot realize real-time response, which also restricts the network transmission performance

Method used

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  • Broadcast station collaborative communication method in ultra short wave Ad Hoc network
  • Broadcast station collaborative communication method in ultra short wave Ad Hoc network
  • Broadcast station collaborative communication method in ultra short wave Ad Hoc network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A radio station cooperative communication method in an ultrashort wave ad hoc network, such as figure 1 with figure 2 As shown, the time division multiple access method is adopted, the nth station sends the information frame of the nth station in the allocated time slot t, and other stations m receive the information frame sent by the nth station in the time slot t, The period of sending information frame is one time frame, where, m, n∈{1, 2,..., N}, m≠n, N is the number of network stations, t∈{1, 2,..., T}, T is The number of time slots contained in a time frame, T is a positive integer, N≤T≤128, the typical value of T is 32, and the remaining T-N time slots are reserved,

[0046] The nth radio station sends the information frame of the nth radio station in the allocated time slot t, the length of the information frame is equal to the length of a time slot, the length of the time slot is no more than 2 seconds, and the typical value is 32ms. The format of the informa...

Embodiment 2

[0073] Here, T=4 and N=4 are taken as an example to describe the sending and receiving process of the station information frame in detail, and other numbers of T and N are similar.

[0074] Note that the 4 radio stations are Radio 1, Radio 2, Radio 3 and Radio 4, and the assigned time slots are Time Slot 1, Time Slot 2, Time Slot 3 and Time Slot 4 respectively. First, station 1 sends information frame 1 in time slot 1, and station 2, station 3 and station 4 receive information frame 1 sent by station 1 in time slot 1, assuming:

[0075] 1) Information frame 1 contains data information packets sent to station 2 and station 3

[0076] 2) Station 3 and Station 2 are neighbor stations,

[0077] The process of station 2 receiving information frame 1 is as follows:

[0078] Step 1: parse the frame parameters,

[0079] Step 2: If there is a data packet sent to itself, if it is received correctly, it will be sent to the upper layer, otherwise it will be cached in the physical layer...

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Abstract

The invention discloses a broadcasting-station coordination communication method in an ultrashort self-organized network. An nth broadcasting-station sends an information frame of the nth broadcasting-station in an allocated time slot t; the other broadcasting-station m receives the information frame sent by the nth broadcasting-station in the time slot t; the other broadcasting-station m processes the information frame sent by the nth broadcasting-station after receiving the information frame sent by the nth broadcasting-station in the time slot t; an information frame parameter is analyzed,and the received information frame is processed correspondingly based upon whether trunking information grouping, short frame grouping and data information grouping sent to the broadcasting-station mexist in information loading; if the data information grouping of a neighbor broadcasting-station sent to the broadcasting-station m exists in the information loading and the trunking is admitted, the broadcasting-station m admits the trunking and generates the trunking information grouping; and the trunking information grouping is divided into retransmission trunking information grouping and pre-retransmission trunking information grouping, and a neighbor state table is refreshed.

Description

a technical field [0001] The invention belongs to wireless network communication technology, in particular to a radio station cooperative communication method in an ultrashort wave ad hoc network. Two background technology [0002] Ultrashort wave stations can adopt two anti-jamming mechanisms, direct spread and frequency hopping, but in practice, in order to take into account the requirements of anti-jamming and communication speed, the frequency hopping mechanism is the main one. The biggest problem with ultra-short wave frequency hopping radio stations is that it takes a long time to synchronize and establish a link, especially when networking. Therefore, in the networking of UHF high-speed data transmission stations, the selection of media access control (MAC) technology needs to carefully consider this point. [0003] Currently, there are two practically applicable MAC schemes: Carrier Sense Multiple Access (CSMA) and Time Division Multiple Access (TDMA). CSMA support...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04B1/00
Inventor 蔡跃明潘成康杨炜伟胡映波徐友云
Owner PLA UNIV OF SCI & TECH
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