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A design method of mac layer transmission protocol with limited control overhead

A transmission protocol and overhead control technology, applied in the field of communication, can solve problems such as energy waste, finding damaged nodes, and data loss, and achieve the effects of enhancing robustness, improving life cycle, and avoiding network congestion or even paralysis

Active Publication Date: 2021-11-23
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for wireless sensor networks with high link reliability requirements and limited control overhead, the S-MAC protocol cannot detect damaged nodes through the message transfer mechanism with limited control overhead and notify the source node to change the sending path in time, resulting in data loss. , a waste of energy

Method used

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  • A design method of mac layer transmission protocol with limited control overhead
  • A design method of mac layer transmission protocol with limited control overhead
  • A design method of mac layer transmission protocol with limited control overhead

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Embodiment Construction

[0117] The following examples illustrate the present invention in further detail.

[0118] This patent covers Figure 1 to Figure 6 Six message data formats, in which the ID fields of network nodes include Source ID, Dest ID and Nexthop ID, which are determined by the scale of the network. Assuming that m is the number of nodes in the network topology, then In order to represent the minimum number of binary digits required for m nodes; the Packet Type field is determined by the number of message types, and the six message formats only need 3-bit data bits; the Packet ID is determined according to the amount of network data sent, and the 4-bit Packet in this patent ID is enough to explain the advantages of this patent; HopCount is set to 4bit because it is considered that 4bit is enough for the general network scale, which is consistent with the classic RIP routing protocol. If it does not match the network scale, this value can be adjusted appropriately; the Data field is de...

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Abstract

The invention belongs to the communication field, and in particular relates to a design method of a MAC layer transmission protocol with limited control overhead. The present invention includes initializing and generating DATA message, sending RTS message, receiving RTS message, sending CTS message, receiving CTS message, sending DATA message, receiving DATA message, sending REQ message, receiving REQ message, sending SRQ message, receiving SRQ message, sending ACK message, receiving ACK message and other processing processes, the present invention judges its own report by monitoring the channel reservation request RTS message sent by the next-hop node and the REQ message of the next-hop node. The correctness of the text transmission, so as to adjust and change the path information in time to solve the problem of avoiding the failure of the relay node and the repair of the interrupted transmission link; within the limited control overhead, no additional control message field is added, effectively avoiding the problem caused by the transmission link. Network congestion or even paralysis caused by road failure, thereby enhancing the robustness of message transmission links, improving the network life cycle, and making it more suitable for wireless sensor networking requirements.

Description

technical field [0001] The invention belongs to the communication field, and in particular relates to a design method of a MAC layer transmission protocol applicable to a wireless sensor network with limited control overhead. Background technique [0002] Contention-type MAC protocol is a kind of MAC protocol classified according to channel allocation method. When a wireless node needs to send data, it actively preempts the channel. When other wireless nodes within its communication range need to send data, it will also initiate the preemption of the wireless channel. This requires a corresponding mechanism to ensure any time in the communication. Only one wireless node in the area can obtain the right to use the channel. The S-MAC protocol is proposed by Wei Ye et al. of US / ISI on the basis of the 802.11MAC protocol as a competition-based MAC protocol for wireless sensor networks. The S-MAC protocol is improved in three aspects to meet the needs of sensor networks to redu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/04H04W40/04H04W80/02H04W84/18H04L12/703H04L12/733H04L12/741H04L45/122H04L45/28H04L45/74
CPCH04L45/20H04L45/28H04L45/74H04W24/04H04W40/04H04W80/02H04W84/18
Inventor 张林波杨帆刘彤徐瑛程郝婧
Owner HARBIN ENG UNIV
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