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

A channel access method and the technology of the access method are applied in the field of channel access of the narrow pulse ultra-broadband network, and can solve the problems such as the inability to exert the potential and advantages of the ultra-broadband technology, the difficulty of pulse detection, and the discount of channel utilization.

Inactive Publication Date: 2014-02-26
CHONGQING TELECOMMUNICATION INSTITUTE
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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 realit

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

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[0027] A specific implementation method of this patent in a narrow-pulse ultra-wideband network is given below. The network first recommends the central node, and the rest of the nodes are terminal nodes. Then the central node first detects the minimum reference time t of the narrow-pulse ultra-wideband signal, and then launches the control frame to the network according to the control frame delivery strategy. Here, the distribution of three levels of control frames in the network is taken as an example, that is to say, user services in the network are divided into three levels. Such as image 3 As shown, seven control frames form one control frame sending cycle. In a control frame cycle, the number of control frames ① is only 1, and the level is the lowest; the number of control frames ② is 2, and the level is the second; the number of control frames 3 is 4, and the level is the highest. The distribution sequence is arranged as follows, the control frame ③ occupies the odd...

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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...

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Application Information

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IPC IPC(8): H04W74/08H04B1/7163
Inventor 马宝红葛利嘉朱林张昊郑鹤钱林杰梁涛
Owner CHONGQING TELECOMMUNICATION INSTITUTE
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