Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A control method for communication of nodes in self-organized Ad hoc network of cellular mobile node

A communication control and cellular mobile technology, applied in the field of non-real-time service transmission, can solve problems such as large delay, large number of channels, and difficulty in clock synchronization, and achieve the effects of solving congestion, realizing clock synchronization, and improving frequency utilization.

Inactive Publication Date: 2011-04-20
HUAZHONG UNIV OF SCI & TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a multi-hop cognitive radio network, unlike a general multi-channel multi-hop Ad hoc network, its available channel set changes with time and location, and the number of channels in the available channel set may also be large, so it is impossible to Each node is equipped with transceivers equivalent to the number of channels
Furthermore, it will be difficult to achieve clock synchronization without a common control channel in cognitive radio networks
Later, someone proposed Slotted Seeded Channel Hopping (SSCH). Each node only needs one transceiver, but this method is not suitable for multi-hop networks, because for each hop communication, both the transceiver and the transceiver need to work on the same channel, which will cause a lot of problems. large delay

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A control method for communication of nodes in self-organized Ad hoc network of cellular mobile node
  • A control method for communication of nodes in self-organized Ad hoc network of cellular mobile node
  • A control method for communication of nodes in self-organized Ad hoc network of cellular mobile node

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Install the first transceiver and the second transceiver on the Ad hoc network node that can communicate with the base station of the cellular system; wherein the first transceiver (CONTROLLER) works on the common control channel, and the common control channel is for the Ad hoc network The channel available to all nodes can be a dedicated channel working on a certain frequency band. All nodes access the common control channel through the CSMA / CA competition mode; the second transceiver (TRANSMITTER) has wireless cognitive capabilities, It can work on any channel in the available channel set.

[0020] N users in the Ad hoc network will access the uplink channel in a time-division multiplexing manner. Because the nodes in the Ad hoc network have wireless sensing capabilities, they can sense the spectrum holes in the surrounding environment, such as figure 1 As shown, the node reports the perception result, that is, a list of status words Ch_info, to the base station in a pe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a communication control method using nodes in cellular mobile node self-organizing Ad Hoc network of the radio technology, which is characterized by comprising steps of: i, mounting a first transceiver and a second transceiver on the nodes; ii, finding a current usable channel set by a base station, and broadcasting the current usable channel set to the nodes in the network; iii, scanning the current usable channel set by the second transceiver, selecting a group of candidate home channels from the channel set, and randomly selecting one channel as the elected home channel; iv, the node broadcasting the elected home channel to the adjacent nodes on a common control channel via the first transceiver, and monitoring return signals on the network; v, a sending node tuning the second transceiver onto the elected home channel of a receiving node, and accessing the channel in a CSMA / CA manner to perform data transmission. With the invention, the frequency spectrum resource can be effectively used, the data transmission is distributed on a plurality of channels thereby reducing service interaction.

Description

technical field [0001] The invention relates to a wireless communication method, in particular to a non-real-time service transmission in a multi-hop cognitive radio Ad hoc network. Background technique [0002] Cellular network and Ad hoc network have strong complementary advantages in terms of coverage, mobility, data rate, network management, and cost performance, so they have become the main focus of research on network interoperability and integration. With the rapid increase of mobile users and traffic , the utilization of frequency resources has reached the limit. Cognitive radio is an intelligent wireless communication technology that provides users with high-capacity services through dynamic access to spectrum, and can greatly improve the existing inefficient frequency utilization. By using cognitive radio technology, unlicensed users (secondary users) can effectively use the spectrum that licensed users (primary users) do not use at a certain time and in a specifi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04W84/18H04W16/10
Inventor 涂来刘雅莎王芙蓉戴彬
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products