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MAC layer access algorithm based on enhanced time mirroring

An access algorithm and enhanced technology, applied in the field of smart grid and the Internet of Things, which can solve the problems of channel fading noise and achieve the effect of improving throughput

Pending Publication Date: 2022-07-29
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

[0004] However, the physical layer of the network has problems such as channel fading and noise that cannot be ignored, and the delay and normalized throughput also have high-quality performance requirements for the Media Access Control (MAC) layer.

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  • MAC layer access algorithm based on enhanced time mirroring
  • MAC layer access algorithm based on enhanced time mirroring
  • MAC layer access algorithm based on enhanced time mirroring

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Embodiment Construction

[0045] The present invention is further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, and the embodiments of the present invention are not limited thereto.

[0046] A MAC layer access algorithm based on enhanced time mirroring, wherein the transmission medium from the source node S end to the relay node R end is wireless, and the transmission medium from the relay node R end to the destination node D end is the power line. The specific process includes: :

[0047] Step S1: After the source node S experiences the duration of the "Distributed Interframe Space" (DIFS), it starts to perform the carrier sense multiple access with Collision Avoid (CSMA / CA). In the backoff process, the MAC layer protocol used in wireless transmission is IEEE802.11, and the S end backs off according to the protocol rules and sends a "Request to Send" (Request to Send, ...

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Abstract

The invention provides a media access control (MAC) layer access algorithm based on enhanced time mirroring, the algorithm aims at two-hop relay transmission, a transmission medium of a first hop is wireless, a transmission medium of a second hop is a power line, and specific algorithm steps are provided; secondly, a physical layer channel parameter and a media access control (MAC) layer are comprehensively considered, and a mathematical model of system normalization throughput, time delay and energy consumption based on an enhanced time mirror image MAC layer access algorithm is established; finally, a simulation result verifies that the MAC layer access algorithm based on the enhanced time mirroring under the dual-medium cooperative communication can effectively improve the system performance and improve the resource utilization rate.

Description

technical field [0001] The present invention relates to the fields of smart grid and Internet of Things. More specifically, it relates to a MAC layer access algorithm based on enhanced time mirroring. Background technique [0002] Power line and wireless hybrid communication can achieve complementary advantages and have been widely used in smart grids, and the use of relays for information transmission can improve the robustness of the system. [0003] Power line communication and wireless communication technology are important components of smart grid and Internet of Things. Based on power line and wireless, a two-hop relay system based on dual-media cooperative communication can be constructed to meet the communication needs of information transmission. [0004] However, the physical layer of the network has problems such as channel fading and noise that cannot be ignored, and the delay and normalized throughput also have high-quality performance requirements for the Medi...

Claims

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Application Information

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IPC IPC(8): H04W74/08H04L45/12H04L45/121H04W40/08
CPCH04W74/0816H04W74/085H04W40/08H04L45/121H04L45/124Y02D30/70
Inventor 陈智雄陈佩茹
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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