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Accidental access method of spread-spectrum self-organizing network

A self-organizing network and random access technology, applied in data exchange network, transmission system, wireless communication, etc., can solve problems affecting network transmission performance and limiting the number of network access users, so as to improve transmission performance and reduce multi-user Jamming power, easy-to-achieve effects

Inactive Publication Date: 2008-09-24
PLA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Designing node transmission frequency and transmission power from the perspective of single node performance optimization limits the number of access users that the network can allow, which in turn affects the transmission performance of the entire network

Method used

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  • Accidental access method of spread-spectrum self-organizing network
  • Accidental access method of spread-spectrum self-organizing network
  • Accidental access method of spread-spectrum self-organizing network

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Embodiment Construction

[0026] The working principle of the present invention will be described in detail below in conjunction with the accompanying drawings. figure 1 Shown is the working scene of the present invention, in which the network nodes are randomly distributed in the network coverage area according to the two-dimensional Poisson point process. In the figure, A is an arbitrarily selected node in the network. The node located in the dotted circle can directly communicate with node A without forwarding through the intermediate node.

[0027] The invention provides a random access method of a spread spectrum ad hoc network. The core idea of ​​the present invention is: the network node buffers the newly arrived data packets and the packets that need to be retransmitted due to transmission failure in the packet queue waiting to be sent by the node, and then allows the network node to send the data packets in each time slot with a predetermined node Send frequency p and node transmit power P T...

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Abstract

The invention provides a random access method for a spread-spectrum self-organized network. In the method, newly arrived packets and packets that need to be re-transmitted are cached in a packet queue waiting to be sent by network nodes; then the packets are sent to target nodes according to preset sending frequency and transmission power; after receiving the packets, the target nodes reply in respect of the confirmed packets; if the network nodes receive the confirmed packets, a new packet is taken from the packet queue waiting to be sent for sending, or the packet is put back to the packet queue waiting to be sent to be retransmitted. In the method, the preset sending frequency is controlled by a random-number generator, and the read-out value of the preset transmission power depends on specific network parameters. While keeping relatively high transmission efficiency for the packets, the random access method for a spread-spectrum self-organized network of the invention reduces multiuser interference power, thereby allowing a relatively large number of access users and improving the transmission performance of the network. The random access method for spread-spectrum self-organized network of the invention is based on simple principle and can be easily realized, thus being convenient for being applied to self-organized network communication equipment.

Description

technical field [0001] The present invention relates to a random access method for a spread spectrum ad hoc network, specifically a random access method for a spread spectrum ad hoc network that improves network transmission performance by adjusting the frequency and transmission power of network nodes for sending packets. The invention belongs to the technical field of self-organizing network access method. Background technique [0002] Self-organizing networks can realize communication between nodes (users) without relying on network infrastructure, and have the characteristics of rapid deployment, flexible networking, and strong invulnerability. It is one of the important directions for the evolution and development of wireless communication networks. In recent years, wireless local area network WLAN (IEEE 802.11 series specification), wireless personal area network WPAN (IEEE 802.15 specification), wireless metropolitan area network WMAN (IEEE 802.16 series specification...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L1/18H04L12/28H04B1/707H04Q7/38H04W74/08
Inventor 孙诗东聂景楠
Owner PLA UNIV OF SCI & TECH