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Node communication method of Ad hoc network and node equipment

A communication method and node technology, applied in wireless communication, network topology, error prevention/detection using return channels, etc., can solve the problems of limited control time slot number, low spectrum utilization, influence, etc., to improve the success rate , improve the accuracy and improve the efficiency

Inactive Publication Date: 2015-09-09
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the frequency domain, a control slot usually occupies all the frequency domain resources that the entire decentralized network can occupy, and the spectrum utilization rate is low, which leads to a complete limitation in the number of nodes that can provide competition or coordination in a control subframe. The number of control slots divided by the control subframe
Moreover, even if the sending node can compete or coordinate without collision in a certain control time slot, due to the lack of central node coordination in the decentralized network, the nodes in the network usually use full power transmission to cause interference to adjacent nodes, or there is movement Environmental interference may cause the transmitted competition or negotiation information to be interfered and cause the receiving node to be unable to demodulate correctly. Therefore, the sending node usually fails to receive a response and will continue to repeatedly send competition or negotiation information in the subsequent control time slots, prolonging the The time for competition or negotiation reduces the efficiency of competition or negotiation, and continues to occupy control time slots, which may further affect nodes that need to compete or negotiate during the same period

Method used

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  • Node communication method of Ad hoc network and node equipment
  • Node communication method of Ad hoc network and node equipment
  • Node communication method of Ad hoc network and node equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment provides a node communication method in a centerless network, which is mainly used for wireless control information between nodes in a centerless network (the information includes at least frame structure control information for controlling the time domain structure of wireless frames and frequency domain structure) transmission and reception, data transmission and reception. The wireless frame structure used in node communication is as follows: figure 2 shown.

[0036] The communication steps between nodes are:

[0037] 101. A node sends radio control information in a control field of each radio frame, or receives radio control information sent by other nodes.

[0038] The radio link control information sent by the node includes at least frame structure configuration information, indicating the time domain structure or frequency domain structure of the radio frame or a combination of the two, for example, the number of sub-bands divided by the contro...

Embodiment 2

[0054] The difference between Embodiment 2 and Embodiment 1 is that, in the node communication method provided in Embodiment 2, the wireless frame structure adopted by the node is as follows: image 3 As shown, the data field in the wireless frame also includes the node control field.

[0055] Step 201, the node sends radio control information in the control field of each radio frame, or receives radio control information sent by other nodes.

[0056] Same as step 101 in the first embodiment;

[0057] Step 202, the node sends data or receives data in the data field of each wireless frame.

[0058] The difference from step 102 in Embodiment 1 is that the node control field in the data field of the node can send the link control information of the node, including at least the modulation and coding information used to send data in the data field, such as modulation mode indication and coding mode indication , encoding block size, etc. In this way, in each wireless frame, the n...

Embodiment 3

[0064] The difference between the third embodiment and the first embodiment is that, in the node communication method provided in the third embodiment, the wireless frame structure adopted by the node is as follows: Figure 4 As shown, the radio frame also includes a feedback field.

[0065] Step 301, the node sends radio control information in the control field of each radio frame, or receives radio control information sent by other nodes.

[0066] Same as step 101 in the first embodiment;

[0067] Step 302, the node sends data or receives data in the data field of each radio frame.

[0068] The difference from step 202 in Embodiment 1 is that the node can also send corresponding data in the data field of the subsequent wireless frame according to the feedback information received in the feedback field in step 303. If the feedback data is lost or wrong, the lost or Incorrect data is retransmitted.

[0069] Step 303, the node sends feedback information or receives feedback ...

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Abstract

The invention provides a node communication method of an Ad hoc network. The method comprises: a wireless frame used by inter-node communication comprises a control domain and a data domain, wherein the control domain comprises a plurality of control resource blocks, and each control resource block occupies a control time slot in the time domain and a sub frequency band in the frequency domain; a node transmits and receives wireless control information in the control domain, wherein the wireless control information comprises frame structure configuration information which indicates the time domain structure or the frequency domain structure of the wireless frame or a combination of the time domain structure and the frequency domain structure; and the node transmits and receives data via the data domain. The method provided by the invention may improve the competition or coordination efficiency of the node.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a node communication method and node equipment of a centerless network. Background technique [0002] At present, in the field of mobile communication, decentralized networks (also known as self-organizing networks) are more and more widely used. Among them, the relatively mature decentralized network technology is represented by Mesh technology based on IEEE802.16. The physical frame structure of Mesh mode is as follows: figure 1 shown. Each frame includes control subframes and data subframes. The control subframe occupies a predetermined OFDM symbol at the front end of each frame, and it can be divided into several time slots. The remaining symbols are the symbols of the data subframe. The control subframe is fixed to use QPSK modulation and 1 / 2 code rate RS-CC coding. [0003] In the process of implementing the prior art, the inventor found that the prior art represente...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/18H04W84/18
CPCH04L1/1825H04L1/1822H04W84/18
Inventor 张文忠黄其华孙鹏余西西俞岚
Owner BEIJING XINWEI TELECOM TECH