Reliable Terahertz wireless personal area network access method with high time slot utilization

Abstract

The invention provides a reliable Terahertz wireless personal area network access method with high time slot utilization. The method comprises the following step: dividing the network running time into multiple superframes with different lengths, wherein each superframe consists of three ordered time periods that are Beacon, CAP and CTAP. The method includes the following three new mechanisms:'multi-dimensional bidirectional subframe body extraction', 'PNC adaptively using CTA time slots based on monitoring" and 'dynamization of the number of subframe head fields', and all the new mechanisms work in the CTAP time period of the superframes. Through the steps of maximally extracting subframe bodies in standard aggregation frames from three dimensions and two directions, enabling the PNCto adaptively use the CTA time slot that is allocated to DEV but is not used when the PNC has data to be transmitted but does not have allocated time slots, and dynamically adjusting the number of the subframe head fields in the standard aggregation frames according to the actual number of the subframe heads, the new access method achieves the effects of improving the reliability and time slot utilization of data frame transmission as well as reducing control fields, and thus the success rate and throughput of the data frame transmission can be improved, and the control overhead and the average delay of data frames can be reduced.

Description

technical field [0001] The present invention belongs to the field of using Terahertz Wireless Personal Area Networks (Terahertz Wireless Personal Area Networks) technology, and in particular relates to the use of TDMA (Time Division Multiple Access, Time Division Multiple Access) in the MAC (Medium Access Control, Media Access Control) layer of the network. In) + CSMA (Carrier Sense Multiple Access, Carrier Sense Multiple Access) hybrid access mode and standard frame aggregation mechanism for terahertz wireless personal area network occasions. Background technique [0002] Terahertz waves refer to electromagnetic waves with a frequency range of 0.1THz–10THz, and wavelengths between millimeter waves and infrared light waves, which can provide high bandwidth capacity while maintaining the stability of communication links. However, in the actual communication environment, it is seriously affected by atmospheric attenuation (especially water vapor absorption), resulting in a sho...

AI Technical Summary

Problems solved by technology

This method includes three new mechanisms: "PNC adaptively uses CTA time slots based on monitoring", "dynamic number of subframe header fields" and "multi-dimensional bidirectional subframe frame body extraction". For the above CTAP, there may be idle time slots, The number of standard frame aggregation sub-headers may be fixed, and the problem of retransmission caused by the failure of the aggregation frame sub-frame to be parsed correctly has been improved and dealt with accordingly, which is conducive to improving the utilization of time slots in the network and reducing the control overhead in data transmission , reduce the number of subframe retransmissions of the aggregated frame

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