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Time division multiplex protocol method applicable to underwater sound communication network

An underwater acoustic communication network and time-division multiplexing technology, which is applied in time-division multiplexing systems, multiplexing communication, network topology, etc., can solve problems such as high overhead, low network throughput, and inability to dynamically allocate network resources. problems to achieve good realizability

Inactive Publication Date: 2012-07-18
SOUTHEAST UNIV
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AI Technical Summary

Problems solved by technology

Therefore, the traditional implementation method has the defects of high overhead, low network throughput, and the inability to dynamically allocate network resources.

Method used

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  • Time division multiplex protocol method applicable to underwater sound communication network
  • Time division multiplex protocol method applicable to underwater sound communication network
  • Time division multiplex protocol method applicable to underwater sound communication network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] see figure 1

[0038] 1) The network is initialized and the topology of the network is established;

[0039] 2) All nodes in the network enter the time-division multiplexing state at the set time, and the network nodes establish initial time slot allocation information; the length of the control packet is set to FrameCtrl, the unit is bit, the data rate is R, the unit is bit / s, and the broadcast power is Pg. The unit is w, the sleep power is Ps, the unit is w, the communication range is MaxDist, the unit is m, the propagation speed is Cspeed, the unit is m / s, the sending power is Pt, the unit is w, the data packet length is FrameLen, and the unit is bit;

[0040] Calculate 3 sets of time values:

[0041] T 1 = FrameCtrl R · Pg Ps

[0042] T 2 = FrameCtrl R ...

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Abstract

The invention discloses a time division multiplex protocol method applicable to an underwater sound communication network. The method comprises the following steps: analyzing channel utilization ratio of the traditional time division multiplex protocol method; improving on the basis, dynamically allocating time slots according to user requirements, so as to cause data transmitted on the channel to be only from the user with data requiring transmission, thus avoiding overhead of idle time slot and causing a node to be independent of a control center; and updating a network time slot distribution list according to neighbour node information, thus automatically realizing network time slot dynamic allocation, reasonably employing channel resource to transmit data by the node, improving utilization ratio of network energy and prolonging network survival time. Thus, the channel utilization ratio is improved.

Description

Technical field: [0001] The invention relates to a time-division multiplexing technology of a data link layer of a sensor network, in particular to a time-division multiplexing protocol method applied to an underwater acoustic communication network, and belongs to the technical field of underwater acoustic signal processing. Background technique: [0002] Time division multiplexing technology is one of the protocol methods of the sensor network data link layer. However, in the application of underwater acoustic communication network, when there are many time slot divisions and less data, the traditional time division multiplexing protocol (TDMA) method is used. Allocate a time slot for each node. The network node only sends data in its own time slot, otherwise it is in the receiving state. Even if the node has no data to send in its own time slot, it still occupies the time slot. Other network nodes This time slot cannot be used either. If you want to adjust the allocation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/18H04W84/18H04B13/02H04J3/00H04L29/06
Inventor 李霞方世良张莹莹高翔安良罗昕炜
Owner SOUTHEAST UNIV
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