Node communication method of Ad hoc network and node equipment

A communication method and a technology of a central network, applied in wireless communication, network topology, error prevention/detection using return channels, etc., can solve problems such as feedback information failure, large interference of adjacent nodes, and high power consumption of equipment, and achieve improved Effects of retransmission efficiency, saving wireless resources, and improving reliability

CN104901785AInactive Publication Date: 2015-09-09BEIJING XINWEI TELECOM TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-09-09
Estimated Expiration
Not applicable · inactive patent

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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, a data domain, and a feedback domain; a node transmits and receives wireless control information in the control domain, wherein the wireless control information comprises frame structure configuration information used for indicating 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; the node transmits and receives data via the data domain; and the node receives and transmits feedback information in the feedback domain, wherein the feedback information is constructed by the node according to the state of the data received in the data domain and comprises retransmission feedback indication, a channel quality index, or a combination thereof. The method provided by the invention may greatly improve retransmission efficiency while saving wireless resources, improve data transmission reliability, and reduce interference on adjacent nodes.
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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. The data subframe can adopt a custom modulation and coding method, but it does not support changing eve...

Examples

Embodiment 1

[0042] 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), data transmission and reception, and feedback information transmission and reception. The wireless frame structure used in node communication is as follows: figure 2 or image 3 shown.

[0043] The steps of the communication method between nodes are:

[0044] 101. A node sends radio control information in a control field of each radio frame, or receives radio control information sent by other nodes.

[0045] 101-1. If the control domain in the wireless frame is not further subdivided in the frequency domain or time domain (such as figure 2 shown), the wireless control information sent by the node in the control domain may include indic...

Embodiment 2

[0065] 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: Figure 4 or Figure 5 or Figure 6 or Figure 7 As shown, the data field in the radio frame also includes the node control field.

[0066] The steps of the communication method between nodes are:

[0067] 201. A node sends radio control information in a control field of each radio frame, or receives radio control information sent by other nodes.

[0068] 201-1. If the control domain in the wireless frame is not further subdivided in the frequency domain or time domain (such as image 3 shown), the wireless control information sent by the node in the control domain may include indications of the frequency domain structure of the wireless frame (such as the frequency domain length of the wireless frame), time domain structure indications (the length of the time domain of the control do...