Access method with high slot utilization rate for terahertz wireless personal area network based on implicit tdma

Abstract

The invention proposes a method for accessing a terahertz wireless personal area network with high time slot utilization rate based on implicit TDMA. It consists of the operations of PNC and DEV in the three cycles of Beacon, CAP and CTAP, including "partial allocation of time slots for multiple superframes", "information perception of time slot allocation based on two overhearings", Four new mechanisms: "adaptive notification of data frame continuity" and "implicit TDMA-based superframe idle time slot allocation"; among them, the first new mechanism works in Beacon and CAP periods, and the second new mechanism works in CAP The third new mechanism works during the CTAP period, and the fourth new mechanism works during the CAP and CTAP periods. The new method proposed by the present invention can reduce the waste of idle time slots by more fully allocating and using the available time slots in the CTAP period of the superframe, and increase the time for data transmission in the superframe, thereby improving the utilization rate of channel time slots and improving Network throughput, reducing the end-to-end average data delay.

Description

technical field [0001] The present invention belongs to the field of using Terahertz Wireless Personal Area Networks (Terahertz Wireless Personal Area Networks, TWPAN) technology, and particularly 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. Multiple Access) + CSMA (CarrierSense Multiple Access, Carrier Sense Multiple Access)" hybrid access mode terahertz wireless personal area network occasions. Background technique [0002] Terahertz (TeraHertz, THz) wave is an electromagnetic wave with a wavelength between millimeter wave and infrared light wave, and its wavelength and frequency range are 0.03mm-3mm and 0.1THz-10THz, respectively. This frequency band has more than twice the available bandwidth than the mmWave frequency band. According to Shannon's formula, when the signal-to-noise ratio of the receiving end is constant, the maximum data rate suppor...

AI Technical Summary

Problems solved by technology

[0014] In order to solve the existing terahertz wireless personal area network access method "PNC only allocates the time slot of the next superframe during the CAP period of the superframe, and the basic method is the overall allocation, which may easily cause the current superframe and the next superframe to appear. In order to solve the problem of free time slots, the present invention proposes a high-slot utilization access method for terahertz wireless personal area networks based on implicit TDMA. The method includes "time slot allocation for multiple superframes", "based The four new mechanisms of "time slot allocation information awareness of two overhearings", "adaptive notification of data frame continuity" and "implicit TDMA-based superframe idle time slot allocation" are used to solve the above-mentioned problem of underutilization of superframe time slots. Solve, so as to improve time slot utilization, increase network throughput, and help reduce data transmission delay

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