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M2M (machine-to-machine) terminal and TCP transmission congestion control method and system thereof

A terminal and network congestion technology, applied in the field of computer communication, can solve problems such as increased terminal power consumption

Active Publication Date: 2015-08-12
南京麦朵信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The problem to be solved by the present invention is: in the prior art, when the M2M terminal is congested in TCP transmission, a large number of retransmissions lead to increased power consumption of the terminal. According to the current method, the present invention proposes a TCP transmission adaptive congestion control method, By judging the network congestion situation, if the network puts the M2M terminal into a dormant low power consumption state, reduce power consumption and network data traffic

Method used

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  • M2M (machine-to-machine) terminal and TCP transmission congestion control method and system thereof
  • M2M (machine-to-machine) terminal and TCP transmission congestion control method and system thereof

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Embodiment Construction

[0056] The technical scheme that the present invention takes is as follows:

[0057] A M2M terminal TCP transmission congestion control method and system, characterized by comprising the following steps:

[0058] Step 1: The M2M terminal starts sending TCP data packets, and initializes the size of the congestion window (CWND);

[0059] Step 2: After receiving the TCP packet, the receiving end checks the correctness of the data through CRC, and returns ACK if it is correct;

[0060] Step 3: the sending end judges the degree of congestion of the network layer, if it reaches the congestion level a set, then reduces CWND, and continues to generate TCP data blocks; if it reaches the congestion level b, it stops sending TCP packets;

[0061] Step 4: the receiving end sends signaling to the physical layer, and after the physical layer receives the signaling, the terminal enters a dormant state;

[0062] Step 5: The receiving end determines whether the sending end enters the dormant...

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Abstract

The invention relates to a M2M terminal TCP transmission congestion control method and system, and belongs to the field of computer communications. The method and system mainly involves: a M2M terminal in an Internet-of-Tings judges the network congestion status of the TCP transmission, and if the network congestion is serious, stops sending TCP data packets, and sends a signal to a bottom layer to enter a dormant state, thereby relieving the congestion at the network side, reducing power consumption of the terminal, and saving energy for the terminal; and meanwhile, a receiving terminal carries out corresponding adjustment according to the congestion status so as to reduce the network overheads at the receiving terminal.

Description

technical field [0001] The invention relates to an M2M terminal and a TCP transmission congestion control method and system thereof, belonging to the field of computer communication. Background technique [0002] The Internet of Things (Internet of Things) is to connect any object with the Internet through radio frequency identification (RFID), infrared sensors, global positioning systems, laser scanners and other information sensing devices according to agreed protocols for information exchange and communication. , to realize a network of intelligent identification, positioning, tracking, monitoring and management of objects. The basis of the Internet of Things is device-to-device communication: M2M (machine-to-machine), in this form of communication, the machine can automatically complete the entire communication process. M2M communication has developed rapidly in recent years and has been widely used in many fields, such as electronic medical care, smart grid, and multim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/801H04L29/08H04W4/00H04W28/02H04W52/02
CPCY02D30/70
Inventor 徐静姚志垒徐森皋军刘其明张成彬
Owner 南京麦朵信息技术有限公司
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