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MAC protocol based on instant forwarding

A protocol and time slot technology, which is applied in the field of MAC protocol based on instant forwarding, can solve the problems of high number of times and high end-to-end delay of relayed data packets, reduce end-to-end delay, solve hidden node problems, and improve throughput and the effect of full-duplex network performance on

Inactive Publication Date: 2014-09-24
TSINGHUA UNIV
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Problems solved by technology

[0005] Although there are some full-duplex MAC protocols, the working mechanism is not based on instant forwarding in the multi-hop forwarding scenario of data packets, resulting in high end-to-end delay of forwarded data packets. In addition, a three-way handshake is performed before transmitting data. There are problems such as too many times

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  • MAC protocol based on instant forwarding
  • MAC protocol based on instant forwarding
  • MAC protocol based on instant forwarding

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Embodiment Construction

[0023] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present invention, but should not be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer" etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and The description is simplified, rather than indicating or impl...

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Abstract

The invention provides an MAC protocol based on instant forwarding. The protocol is achieved through the self-organization router step and the transmission step. According to the self-organization router step, nodes generate a self-organization router according to a ROUT_REQ frame, a response frame ROUT_ACK and an acknowledgement frame ROUT_CNFM. According to the transmission step, the nodes are classified, the classified nodes acquire target addresses according to the self-organization router, and data packets are sent or received according to the target addresses. According to the MAC protocol based on instant forwarding, through the self-organization router and the improvement of a handshaking mechanism, synchronous check can be carried out through forwarded signals in the forwarding process, dual-way contralateral routing and single-way instant forwarding are supported at the same time, the problem of hidden nodes can be solved, end-to-end delay is lowered, and the throughput rate and full-duplex network performance are improved.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a MAC protocol based on instant forwarding. Background technique [0002] Wireless half-duplex communication can only transmit or receive in the same frequency and time slot, whichever is the case; while wireless full-duplex communication can achieve simultaneous transmission and reception of the same frequency and the same time slot, thereby achieving double throughput. Due to the immature self-interference cancellation technology in the past few decades, wireless communication has been severely affected by self-interference, and wireless communication systems basically adopt a half-duplex mode. [0003] In recent years, there have been breakthrough researches in the field of self-interference cancellation, which can achieve good cancellation effects and provide the possibility for the realization of full-duplex mode. Self-interference cancellation includes three parts:...

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Application Information

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IPC IPC(8): H04L29/08
Inventor 张春林进佳贾雯姜汉钧王志华
Owner TSINGHUA UNIV
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