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System and method for transmitting low interception signal of high-throughput and delay sensibility wireless network

A delay-sensitive, wireless network technology, applied in the transmission system, digital transmission system, duplex signal operation, etc., can solve the problems of low collision probability, low interception, high throughput delay-sensitive wireless network, etc.

Active Publication Date: 2011-02-02
BEIHANG UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of multiple access in high-throughput, delay-sensitive wireless networks, and provide a signal transmission system and method that can realize multi-channel, full-duplex transmission and has low collision probability and low interception characteristics

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  • System and method for transmitting low interception signal of high-throughput and delay sensibility wireless network
  • System and method for transmitting low interception signal of high-throughput and delay sensibility wireless network
  • System and method for transmitting low interception signal of high-throughput and delay sensibility wireless network

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Embodiment Construction

[0074] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0075] In an asynchronous channel access protocol (such as ALOHA type, CSMA type protocol), user information is packaged into several message packets for transmission within the network. When a node cannot accurately obtain channel state information, once multiple adjacent nodes need to access the channel at the same time, packet collisions are likely to occur, resulting in a large access delay and seriously reducing channel utilization. The low-interception signal transmission method of the high-throughput, delay-sensitive wireless network proposed by the present invention, the method splits each data packet into a number of evenly short data sub-blocks, and performs bursting through time-frequency two-dimensional pseudo-random modulation Transmission not only has good low interception and anti-interference performance, but also reduces the channel c...

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Abstract

The invention discloses a system and a method for transmitting low interception signals, which are suitable for a high-throughput and delay sensibility wireless network that mainly uses burst service. The system and the method are used for splitting a message group in the traditional group wireless network into a series of even and short data sub-blocks and defusing the grouping conflict into thecollision among a plurality of few sub-blocks by frequency hopping and time hopping two-dimensional pseudo-random modulation, are combined with channel coding with good deletion performance to realize the full-duplex transmission of emission and multi-path reception, not only increases channel utilization rate and network throughput, but also have good anti-interference and low-interception performance; meanwhile, by combining an asynchronous competitive channel access system, the system and the method are not only capable of avoiding a complicated resource scheduling algorithm and reducing channel access time delay, but also can satisfy multi-user access at the same time; finally, the system and the method can slowly reduce the throughput of an overload network, avoid the systemic breakdown caused by overload and increases the network robustness.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a low-interception signal transmission system and method suitable for high-throughput, delay-sensitive wireless networks. Background technique [0002] The multiple access technology of the network usually refers to the technology that network nodes realize mutual connection and access through a shared channel. In order to achieve network interconnection, different nodes must communicate with each other through a common channel. Because the process of accessing or accessing the network is actually a process of occupying a channel, it is also called channel access technology. In channel access protocols, two basic issues affecting channel utilization are: first, channel resource allocation. The channel resource allocation method is closely related to the communication service, and different services require a resource allocation method suitable for it; secondly,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/00H04L1/00H04L5/14H04B1/713H04L9/08
Inventor 张晓林和欣姚远鲍君海
Owner BEIHANG UNIV
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