CN106604410B - Method for realizing wireless self-organizing network establishment based on conflict detection and competition mode - Google Patents
Method for realizing wireless self-organizing network establishment based on conflict detection and competition mode Download PDFInfo
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- CN106604410B CN106604410B CN201710089461.4A CN201710089461A CN106604410B CN 106604410 B CN106604410 B CN 106604410B CN 201710089461 A CN201710089461 A CN 201710089461A CN 106604410 B CN106604410 B CN 106604410B
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Abstract
The invention relates to the technical field of wireless communication, and discloses a method for realizing wireless self-organizing network establishment based on a collision detection and competition mode. The method specifically comprises the following steps: setting N wireless network nodes in a network to monitor a communication channel, wherein N is a natural number greater than 1, and detecting the use condition of the channel; when the wireless network node detects that a channel is idle, transmitting node broadcast information, and simultaneously receiving and recording broadcast information of N-1 wireless network nodes except the wireless network node; repeating the steps 1-2 to complete the enumeration process until a network center node of the network is determined; the network center node completes the interaction of the resource allocation information in a time division multiplexing mode; the network center node and N-1 wireless network nodes except the network center node complete the establishment of the network in a three-way handshake interaction mode. The scheme can adapt to the condition that the wireless self-organizing network topology structure is changeable and the number of wireless network nodes is large, so that the detection coverage range of the wireless sensor is wider.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a method for realizing wireless self-organizing network establishment based on a collision detection and competition mode.
Background
With the development of wireless sensor technology, wireless sensors enter the fields of environment monitoring, intelligent transportation, battlefield detection and the like by means of convenient acquisition means and low price, and become important technical implementation means and promotion force in the field of internet of things. In the traditional environment detection which is not suitable for human survival, such as severe environment, damage scene and the like, the wireless sensor also plays a great advantage.
However, with the limited detection coverage range of a single wireless sensor, the traditional wireless sensor single-node acquisition processing mode does not meet the requirement. A plurality of isolated wireless sensors are integrated into one network through a wireless sensor network technology, so that the wireless sensors can share data and perform cooperative processing, and the wireless sensor network technology becomes the current hotspot technology.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the existing problems, a method for realizing the establishment of the wireless self-organizing network based on a collision detection and competition mode is provided.
The technical scheme adopted by the invention is as follows: a method for realizing wireless self-organizing network establishment based on conflict detection and competition modes specifically comprises the following processes: step 1, setting N wireless network nodes in a network to monitor a communication channel, wherein N is a natural number greater than 1, and detecting the use condition of the channel; step 2, when the wireless network node detects that the channel is idle, the wireless network node sends node broadcast information, and simultaneously receives and records broadcast information of N-1 wireless network nodes except the wireless network node; step 3, repeating the steps 1-2 to complete the enumeration process until a network center node of the network is determined; step 4, the network center node completes the interaction of the resource allocation information in a time division multiplexing mode; and 5, the network center node and the N-1 wireless network nodes except the network center node complete the establishment of the network in a three-way handshake interaction mode.
Further, in step 1, the wireless network node includes a wireless sensor, a wireless communication transceiving channel and a transceiving antenna, and the wireless sensor detects the use condition of the channel through the wireless communication transceiving channel and the transceiving antenna.
Further, the specific process of step 2 is as follows: if the wireless network node detects that the channel is occupied, the wireless sensor generates random back-off time, and monitors again after the back-off time; if the wireless network node detects that the channel is idle, the wireless network node immediately sends node broadcast information, and simultaneously receives and records the broadcast information of N-1 wireless network nodes except the wireless network node in the back-off time.
Further, the specific process of step 3 is as follows: repeating the steps 1-2, if the wireless network node finds that the node information of the wireless network node is contained in the broadcast information of the wireless network node except the wireless network node when monitoring the communication channel, quitting the competition sending process and stopping sending the node broadcast information; in the process of repeated interception, until only one node broadcasts information, the node is set as a network center node, and the enumeration process of the wireless network nodes is completed.
Further, in the specific process of step 4, the network center node divides the time resource into time frames and time elements, the time resource is composed of a plurality of time frames, each time frame includes a plurality of time elements, a time slot combination is obtained, each time slot only communicates with a unique wireless network node, and the next time slot waits for receiving the information of the wireless network node to complete the interaction of the resource allocation information.
Further, the specific process of step 5 is as follows: step 51, the network center node sends network access establishment broadcast to N-1 wireless network nodes except the network center node, and the wireless network nodes send network access requests to the network center node after receiving the broadcast information of the network center node to complete first handshake interaction; step 52, after receiving the network access request of the wireless network node, the network center node sends a network access response to the wireless network node to complete the second handshake interaction; and step 53, after receiving the response of the network center node, the wireless network node completes the third handshake interaction and completes the network access process.
Compared with the prior art, the beneficial effects of adopting the technical scheme are as follows: a plurality of wireless network nodes are adopted for acquisition and processing, so that the detection coverage range of the wireless sensors is wider, and the wireless sensors can share data; the method is simple to implement, can adapt to the condition that the wireless self-organizing network has variable topological structures and more wireless network nodes, and is a reliable mode for quickly establishing the wireless self-organizing network; the broadcast information of the sending node is realized by adopting a collision detection method, and the rapid establishment of the network can be completed without depending on the prior information of any wireless sensor.
Drawings
Fig. 1 is a schematic structural diagram of a wireless network node composition principle of the present invention.
Fig. 2 is a flow chart of the handshake interaction process of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
A method for realizing wireless self-organizing network establishment based on conflict detection and competition modes specifically comprises the following processes: step 1, setting N wireless network nodes in a network to monitor a communication channel, wherein N is a natural number greater than 1, and detecting the use condition of the channel; step 2, through a collision detection method, when a wireless network node X in N wireless network nodes detects that a channel is idle, the wireless network node X represents any wireless network node in the N wireless network nodes, and the wireless network node X sends node broadcast information and simultaneously receives and records the broadcast information of N-1 wireless network nodes except the wireless network node X; step 3, repeating the steps 1-2 to complete the enumeration process until a network center node of the network is determined; step 4, the network center node completes the interaction of the resource allocation information in a time division multiplexing mode; and 5, the network center node and the N-1 wireless network nodes except the network center node complete the establishment of the network in a three-way handshake interaction mode. The network establishment method is simple to implement, adopts a collision detection mode, sends broadcast information when a channel is idle, can adapt to the conditions that the wireless self-organizing network topology structure is changeable and the number of wireless network nodes is large, and realizes the rapid establishment of the wireless self-organizing network.
In the step 1, the wireless network node includes a wireless sensor, a wireless communication transceiving channel and a transceiving antenna, and the wireless sensor detects the use condition of the channel through the wireless communication transceiving channel and the transceiving antenna. As shown in fig. 1, the wireless sensor transmits the acquired signal to the wireless communication transceiving channel, and the wireless communication transceiving channel performs bidirectional transmission with the transceiving antenna, and can receive broadcast information of other wireless network nodes and send broadcast information of itself.
The specific process of the step 2 is as follows: if the wireless network node X detects that the channel is occupied, the wireless sensor generates a random back-off time TRAt a back-off time TRThen monitoring again; if the wireless network node X detects that the channel is idle, the wireless network node X immediately sends node broadcast information and keeps back-off time TRAnd simultaneously receiving and recording the broadcast information of N-1 wireless network nodes except the wireless network node X.
The specific process of the step 3 is as follows: repeating the steps 1-2, if a certain wireless network node Y finds that the node information of the wireless network node Y is contained in the broadcast information of the wireless network node except the wireless network node Y when the wireless network node Y monitors a communication channel, the wireless network node Y quits the competition sending process and stops sending the node broadcast information; in the process of repeated interception, until only one node broadcasts information, the node is set as a network center node, and the enumeration process of the wireless network nodes is completed.
In the specific process of step 4, the network center node divides the time resource into a time frame and a time element, the time resource is composed of a plurality of time frames, the time resource configuration combination of the network center time node takes the time frame as a repetition period, each time frame contains a plurality of time elements, the time element is also called a time slot, the minimum operation granularity is achieved, the network center node divides the time slot in the time frame into a sending time slot and a receiving time slot, a time slot combination is obtained, each time slot is only communicated with a unique wireless network node, the next time slot waits for receiving the information of the wireless network node, and the interaction of the resource allocation information is completed. In the above process, a specific time slot interacts with a specific network node.
As shown in fig. 2, the hub node and other wireless network nodes have a three-way handshake interaction procedure. The specific process of the step 5 is as follows: step 51, the network center node sends network access establishment broadcast to N-1 wireless network nodes except the network center node, and the wireless network nodes send network access requests to the network center node after receiving the broadcast information of the network center node to complete first handshake interaction; step 52, after receiving the network access request of the wireless network node, the network center node sends a network access response to the wireless network node to complete the second handshake interaction; and step 53, after receiving the response of the network center node, the wireless network node completes the third handshake interaction and completes the network access process.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed. Those skilled in the art to which the invention pertains will appreciate that insubstantial changes or modifications can be made without departing from the spirit of the invention as defined by the appended claims.
Claims (5)
1. A method for realizing wireless self-organizing network establishment based on conflict detection and competition modes is characterized by comprising the following processes: step 1, setting N wireless network nodes in a network to monitor a communication channel, wherein N is a natural number greater than 1, and detecting the use condition of the channel; step 2, when the wireless network node detects that the channel is idle, the wireless network node sends node broadcast information, and simultaneously receives and records broadcast information of N-1 wireless network nodes except the wireless network node; step 3, repeating the steps 1-2 to complete the enumeration process until a network center node of the network is determined; step 4, the network center node completes the interaction of the resource allocation information in a time division multiplexing mode; step 5, the network center node and N-1 wireless network nodes except the network center node complete the establishment of the network in a three-way handshake interaction mode;
the specific process of the step 3 is as follows: repeating the steps 1-2, if the wireless network node finds that the node information of the wireless network node is contained in the broadcast information of the wireless network node except the wireless network node when monitoring the communication channel, quitting the competition sending process and stopping sending the node broadcast information; in the process of repeated interception, until only one node broadcasts information, the node is set as a network center node, and the enumeration process of the wireless network nodes is completed.
2. The method for implementing wireless ad hoc network establishment based on collision detection and contention mode as claimed in claim 1, wherein in step 1, the wireless network node comprises a wireless sensor, a wireless communication transceiving channel and a transceiving antenna, and the wireless sensor detects the use condition of the channel through the wireless communication transceiving channel and the transceiving antenna.
3. The method for implementing wireless ad hoc network establishment based on collision detection and contention mode as claimed in claim 2, wherein the specific process of step 2 is: if the wireless network node detects that the channel is occupied, the wireless sensor generates random back-off time, and monitors again after the back-off time; if the wireless network node detects that the channel is idle, the wireless network node immediately sends node broadcast information, and simultaneously receives and records the broadcast information of N-1 wireless network nodes except the wireless network node in the back-off time.
4. The method according to claim 3, wherein in the specific process of step 4, the network center node divides the time resource into time frames and time elements, the time resource is composed of a plurality of time frames, each time frame includes a plurality of time elements, a time slot combination is obtained, each time slot only communicates with a unique wireless network node, and the next time slot waits for receiving the information of the wireless network node to complete the interaction of the resource allocation information.
5. The method for implementing wireless ad hoc network establishment based on collision detection and contention mode as claimed in claim 4, wherein the specific process of step 5 is: step 51, the network center node sends network access establishment broadcast to N-1 wireless network nodes except the network center node, and the wireless network nodes send network access requests to the network center node after receiving the broadcast information of the network center node to complete first handshake interaction; step 52, after receiving the network access request of the wireless network node, the network center node sends a network access response to the wireless network node to complete the second handshake interaction; and step 53, after receiving the response of the network center node, the wireless network node completes the third handshake interaction and completes the network access process.
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| CN107820264B (en) * | 2017-10-17 | 2020-12-08 | 浙江大华技术股份有限公司 | Method and device for determining back-off time |
| CN109450511B (en) * | 2018-11-30 | 2022-03-29 | 上海无线电设备研究所 | Multi-antenna autonomous switching method of star self-organizing network |
| CN109510658B (en) * | 2018-12-29 | 2021-06-15 | 湖北航天技术研究院总体设计所 | Networking access method, system and platform applied to multi-floating platform scene |
| CN109977068B (en) * | 2019-02-01 | 2021-06-08 | 广州广电运通金融电子股份有限公司 | Inter-board communication method and device and circulating machine core |
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