Random channel access method of narrow pulse ultra wide band network and based on business priorities

Abstract

The invention discloses a random channel access method of a narrow pulse ultra wide band network and based on business priorities. The control structure refers to the CDPD structure characteristic that uplink channel and downlink channel are included, in improving throughput capacity, measures of CSMA and time slot ALOHA for overcoming data packet collision are learned, and through defining the grades and the structures of control frames, nodes with different business priorities in the network obtain the right to use channels through acquiring different grades of control frames. According to the invention, channel resources in the narrow pulse ultra wide band network are reasonably utilized, the channel utilization rate of the network is increased, services can be provided according to grades before data packet collision, and a service grade safeguard mechanism which is different from a previous mechanism based on a back off algorithm is achieved. The random channel access method can be applied to occasions of narrow pulse ultra wide band radio networks, multi-hop mobile ad hoc networks, wireless local area networks and next generation heterogeneous networks and the like.

Description

technical field [0001] The invention belongs to the field of wireless network technology, such as ultra-wideband communication network, multi-hop mobile self-organizing network, wireless local area network, wireless access network, etc., and particularly relates to channel access technology of narrow-pulse ultra-wideband network. Background technique [0002] Narrow-pulse ultra-wideband is the most basic way to realize ultra-wideband. The main difference from traditional narrowband wireless communication technology is that it directly uses extremely narrow impulse pulses in the time domain to transmit data without using carrier modulation. Narrow-pulse ultra-wideband network is a network that uses pulsed UWB (Ultra Wideband, ultra-wideband) signals for communication. Since very narrow pulses (on the order of nanoseconds) are used to transmit information, and the average power of the transmission is very low, it takes a very long time. The communication connection can only be...

AI Technical Summary

Problems solved by technology

[0004] For narrow-pulse ultra-wideband networks, because the pulse duty cycle is very small, the pulses are not easy to detect, so it takes a long time to achieve synchronization between the transmitter and receiver without increasing the complexity of the receiver. This is the narrow-pulse ultra-wideband network. At present, an unavoidable reality is also a problem that must be considered in the design of narrow pulse ultra-broadband network access technology

Ultra-broadband high-speed transmission capability, combined with inefficient access mechanism, its channel utilization rate is greatly reduced, and the potential and advantages of ultra-broadband technology cannot be brought into play

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