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Access method with high time slot utilization rate of implicit TDMA based terahertz wireless personal area network

An access method and terahertz technology, applied in the field of terahertz wireless personal area network, can solve problems such as idle time slots

Active Publication Date: 2017-10-17
CHONGQING UNIV OF POSTS & TELECOMM
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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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  • Access method with high time slot utilization rate of implicit TDMA based terahertz wireless personal area network
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  • Access method with high time slot utilization rate of implicit TDMA based terahertz wireless personal area network

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Embodiment Construction

[0140] In a wireless personal area network in which nodes use terahertz channels as wireless communication channels, and the number of nodes is not less than 3 (only 2 in special cases), all nodes are in a static or slow moving state; any two nodes can Directly carry out two-way data transmission, each node can be the source node of the data service, also can be the destination node of the data service; One node is selected as PNC, and other nodes are used as DEV; Each node in the network runs the present invention A high-slot utilization access method for terahertz wireless personal area networks based on implicit TDMA; in the process of running the access method, key parameters can be set according to default values.

[0141] The implicit TDMA-based terahertz wireless personal area network high-slot utilization access method proposed by the present invention is composed of the operations of PNC and DEV in three cycles of Beacon, CAP and CTAP. A specific implementation is as f...

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Abstract

The invention provides an access method with high time slot utilization rate of an implicit TDMA based terahertz wireless personal area network. The access method is composed of operation of a PNC and a DEV within three circularly occurred sequential periods, including, Beacon, CAP and CTAP, and comprises four new mechanisms, including, multiple-super-frame oriented time slot partial distribution, twice-auditing based time slot distribution information perception, data frame continuous situation self-adaption announcement and an implicit TDMA based super-frame idle time slot distribution. The first new mechanism works in the Beacon and the CAP; the second new mechanism works in the CAP; the third novel mechanism works in the CTAP; and the fourth new mechanism works in the CAP and the CTAP. By allocating and using available time slots of the super-frame CTAP more adequately, the new method reduces waste of idle time slots, increases time used for time transmission in the super-frame, accordingly can improve the channel time slot utilization rate, can improve the network throughput and can reduce the end-to-end average time delay of the data.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04
CPCH04W72/0446H04W72/53
Inventor 任智吕昱辉严炎田洁丽姚玉坤曹建玲
Owner CHONGQING UNIV OF POSTS & TELECOMM
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