CN113259860A - Ad hoc network method based on Bluetooth broadcast communication - Google Patents
Ad hoc network method based on Bluetooth broadcast communication Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention discloses an ad hoc network method based on Bluetooth broadcast communication, which belongs to the technical field of broadcast communication and is characterized by comprising the following steps: a. initiating a networking request data packet; b. returning a response and sending a data response packet; c. analyzing the data packet; d. waiting for the command target equipment to return a response packet with successful numbering; e. stopping numbering and commanding broadcasting, ending the first numbering, and numbering for the second time; f. and the No. 5 target equipment serving as the information source equipment repeats the numbering process of the No. 1 terminal equipment, and the numbering process is sequentially carried out until all the terminal equipment are numbered, so that the ad hoc network is completed. The invention takes the spacing distance between the terminal devices as the datum point of the communication delay, and automatically networks through the signal intensity of the terminal device communication, thereby reducing the workload of manual input, improving the intelligent degree of the terminal device networking, and having the characteristics of low communication protocol cost, stable performance, large networking capacity, good redundancy and stable network.
Description
Technical Field
The invention relates to the technical field of broadcast communication, in particular to an ad hoc network method based on Bluetooth broadcast communication.
Background
In a system formed by existing internet of things equipment which is used for networking equipment in a column shape, whether the equipment belongs to a terminal, a relay and a gateway or not is defined through two-dimensional code scanning, RFID scanning and inputting or manual equipment number inputting, and then data communication is carried out according to configuration information. Although the traditional method is effective and reliable, the problems that the equipment is slow to record and labor cost is increased exist when mass equipment is installed.
Chinese patent publication No. CN 111328037a, published as 2020, 06, 23, discloses a bluetooth MESH technology-based highway tunnel communication system, comprising: the system comprises a plurality of MESH routers arranged in an expressway tunnel, at least two MESH configuration servers arranged at an entrance and an exit of the expressway tunnel, a MESH gateway server arranged in the expressway tunnel and a plurality of Bluetooth clients, wherein the MESH routers, the MESH configuration servers and the MESH gateway server form a tunnel backbone MESH network, the MESH configuration servers are used for configuring the Bluetooth clients into MESH nodes of the tunnel backbone MESH network, the MESH routers are in communication connection with the MESH gateway server, the tunnel backbone MESH network is in communication connection with a remote monitoring center through the MESH gateway server, and a plurality of MESH routers transmit data in a multi-hop mode.
The highway tunnel communication system based on the bluetooth MESH technology disclosed in the patent document has the effect of being beneficial to improving the reliability and timeliness of data transmission in a tunnel to a remote monitoring center. However, the bluetooth-based MESH networking has the disadvantages of complex technology and high development difficulty, and has some disadvantages in low power consumption.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an ad hoc network method based on Bluetooth broadcast communication.
The invention is realized by the following technical scheme:
an ad hoc network method based on Bluetooth broadcast communication is characterized by comprising the following steps:
a. the number 1 terminal equipment is firstly used as information source equipment to initiate a networking request data packet;
b. after receiving the networking request data packet, the No. 2 target device, the No. 3 target device, the No. 4 target device, the No. 5 target device and other terminal devices return a response and send out a data response packet;
c. the No. 1 terminal equipment receives data response packets of the No. 2 target equipment, the No. 3 target equipment, the No. 4 target equipment, the No. 5 target equipment and other terminal equipment and then performs data packet analysis;
d. the method comprises the steps that 1, for a data packet of unnumbered equipment, a numbering command packet is set by the terminal equipment according to the signal intensity of the data packet, the target equipment with the strongest signal is set to be No. 2 according to the principle that the signal intensity is strong when the distance between the terminal equipment and the target equipment is short, then the signal intensity is No. 3, and the like, numbering instructions are sent to the No. 2 target equipment, the No. 3 target equipment, the No. 4 target equipment and the No. 5 target equipment, and a successful numbering response packet is waited to be sent back by the target equipment;
e. after receiving the successful numbering response packets of the target equipment No. 2, the target equipment No. 3, the target equipment No. 4 and the target equipment No. 5, the terminal equipment No. 1 stops numbering and orders to broadcast, finishes the first numbering, and transfers the numbering task to the target equipment No. 5 for the second numbering;
f. and the No. 5 target equipment serving as the information source equipment repeats the numbering process of the No. 1 terminal equipment, and the numbering process is sequentially carried out until all the terminal equipment are numbered, so that the ad hoc network is completed.
In the step a, initiating the networking request data packet specifically means sending through a platform remote or on-site mobile phone APP.
In the step b, the specific receiving of the networking request data packets refers to sequentially receiving the networking request data packets according to the direct proportion relationship between the intensity of the Bluetooth signals and the physical distance.
In the step c, the data packet analysis specifically refers to analyzing a unique 6-byte MAC address, data packet signal strength and whether the data packet is unnumbered equipment or not.
In the step d, the numbering command packet specifically means that a unique corresponding mapping relation is established between the 6-byte MAC address and the virtual 1-9999 virtual equipment number.
And the step of quitting the networking in an overtime mode, specifically, the step is preset time, and when the number success response packet of the target equipment is not received after the preset time is exceeded, the step of quitting the networking in the numbering mode is stopped.
In the step f, completing the ad hoc network specifically means setting the networking position of the terminal equipment according to the serial number of the terminal equipment, and performing data transmission between the terminal equipment through Bluetooth broadcast communication.
The basic principle of the invention is as follows:
the terminal equipment on the highway is usually in a linear networking mode and has a difference with a common communication node network distributed in a grid shape; by utilizing Bluetooth broadcast communication, automatic networking is carried out by using the distance between terminal equipment as a reference point of communication delay and the signal intensity of terminal equipment communication, the workload of manual input is reduced, the intelligent degree of terminal equipment networking is improved, the terminal equipment is truly and randomly installed, and after power-on operation, a unique corresponding mapping relation is established between the 6-byte MAC addresses of all the terminal equipment and the virtual 1-9999 virtual equipment numbers, so that automatic numbering can be carried out, and automatic networking is realized.
The beneficial effects of the invention are mainly shown in the following aspects:
1. compared with the prior art, the invention takes the interval distance between the terminal devices as the datum point of communication delay, automatically networks by the signal intensity of the terminal device communication, reduces the workload of manual input, improves the intelligent degree of the terminal device networking, and has the characteristics of low communication protocol cost, stable performance, large networking capacity, good redundancy and stable network.
2. In the invention, because the terminal equipment along the highway is generally arranged along the highway and the tunnel and is not usually arranged in a net shape, the terminal equipment can be self-organized by utilizing the Bluetooth broadcast communication, such as a bottom layer broadcast communication mechanism of a Bluetooth protocol stack, so that the complex steps of manually networking the terminal equipment are reduced, the networking is more flexible, and the random installation of the terminal equipment is realized.
3. Compared with the traditional networking mode, the invention has the advantages of simpler networking mode, more stable and reliable communication and strong applicability.
4. Compared with a communication node network distributed in a grid shape, the network node network has the advantages that the linear networking mode has the characteristic of good redundancy, the whole operation is not influenced even if part of terminal equipment fails, and the operation is more stable.
Drawings
The invention will be further described in detail with reference to the drawings and the detailed description, in which:
FIG. 1 is a block flow diagram of the present invention.
Detailed Description
Example 1
Referring to fig. 1, an ad hoc network method based on bluetooth broadcast communication includes the following steps:
a. the number 1 terminal equipment is firstly used as information source equipment to initiate a networking request data packet;
b. after receiving the networking request data packet, the No. 2 target device, the No. 3 target device, the No. 4 target device, the No. 5 target device and other terminal devices return a response and send out a data response packet;
c. the No. 1 terminal equipment receives data response packets of the No. 2 target equipment, the No. 3 target equipment, the No. 4 target equipment, the No. 5 target equipment and other terminal equipment and then performs data packet analysis;
d. the method comprises the steps that 1, for a data packet of unnumbered equipment, a numbering command packet is set by the terminal equipment according to the signal intensity of the data packet, the target equipment with the strongest signal is set to be No. 2 according to the principle that the signal intensity is strong when the distance between the terminal equipment and the target equipment is short, then the signal intensity is No. 3, and the like, numbering instructions are sent to the No. 2 target equipment, the No. 3 target equipment, the No. 4 target equipment and the No. 5 target equipment, and a successful numbering response packet is waited to be sent back by the target equipment;
e. after receiving the successful numbering response packets of the target equipment No. 2, the target equipment No. 3, the target equipment No. 4 and the target equipment No. 5, the terminal equipment No. 1 stops numbering and orders to broadcast, finishes the first numbering, and transfers the numbering task to the target equipment No. 5 for the second numbering;
f. and the No. 5 target equipment serving as the information source equipment repeats the numbering process of the No. 1 terminal equipment, and the numbering process is sequentially carried out until all the terminal equipment are numbered, so that the ad hoc network is completed.
The embodiment is the most basic implementation manner, and a, number 1 terminal devices are firstly used as information source devices to initiate networking request data packets; b. after receiving the networking request data packet, the No. 2 target device, the No. 3 target device, the No. 4 target device, the No. 5 target device and other terminal devices return a response and send out a data response packet; c. the No. 1 terminal equipment receives data response packets of the No. 2 target equipment, the No. 3 target equipment, the No. 4 target equipment, the No. 5 target equipment and other terminal equipment and then performs data packet analysis; d. the method comprises the steps that 1, for a data packet of unnumbered equipment, a numbering command packet is set by the terminal equipment according to the signal intensity of the data packet, the target equipment with the strongest signal is set to be No. 2 according to the principle that the signal intensity is strong when the distance between the terminal equipment and the target equipment is short, then the signal intensity is No. 3, and the like, numbering instructions are sent to the No. 2 target equipment, the No. 3 target equipment, the No. 4 target equipment and the No. 5 target equipment, and a successful numbering response packet is waited to be sent back by the target equipment; e. after receiving the successful numbering response packets of the target equipment No. 2, the target equipment No. 3, the target equipment No. 4 and the target equipment No. 5, the terminal equipment No. 1 stops numbering and orders to broadcast, finishes the first numbering, and transfers the numbering task to the target equipment No. 5 for the second numbering; f. the No. 5 target device is used as the information source device to repeat the numbering process of the No. 1 terminal device, and the numbering process is sequentially carried out until all the terminal devices are numbered, so that the ad hoc network is completed; as a complete technical scheme, compared with the prior art, the invention takes the spacing distance between the terminal devices as the datum point of communication delay, and automatically networks through the signal intensity of the terminal device communication, thereby reducing the workload of manual input, improving the intelligent degree of the terminal device networking, and having the characteristics of low communication protocol cost, stable performance, large networking capacity, good redundancy and stable network.
Example 2
Referring to fig. 1, an ad hoc network method based on bluetooth broadcast communication includes the following steps:
a. the number 1 terminal equipment is firstly used as information source equipment to initiate a networking request data packet;
b. after receiving the networking request data packet, the No. 2 target device, the No. 3 target device, the No. 4 target device, the No. 5 target device and other terminal devices return a response and send out a data response packet;
c. the No. 1 terminal equipment receives data response packets of the No. 2 target equipment, the No. 3 target equipment, the No. 4 target equipment, the No. 5 target equipment and other terminal equipment and then performs data packet analysis;
d. the method comprises the steps that 1, for a data packet of unnumbered equipment, a numbering command packet is set by the terminal equipment according to the signal intensity of the data packet, the target equipment with the strongest signal is set to be No. 2 according to the principle that the signal intensity is strong when the distance between the terminal equipment and the target equipment is short, then the signal intensity is No. 3, and the like, numbering instructions are sent to the No. 2 target equipment, the No. 3 target equipment, the No. 4 target equipment and the No. 5 target equipment, and a successful numbering response packet is waited to be sent back by the target equipment;
e. after receiving the successful numbering response packets of the target equipment No. 2, the target equipment No. 3, the target equipment No. 4 and the target equipment No. 5, the terminal equipment No. 1 stops numbering and orders to broadcast, finishes the first numbering, and transfers the numbering task to the target equipment No. 5 for the second numbering;
f. and the No. 5 target equipment serving as the information source equipment repeats the numbering process of the No. 1 terminal equipment, and the numbering process is sequentially carried out until all the terminal equipment are numbered, so that the ad hoc network is completed.
In the step a, the specific step of initiating the networking request data packet refers to the step of remotely sending the networking request data packet through the platform.
The embodiment is a preferred implementation manner, and since terminal devices along a highway are generally arranged along the highway and a tunnel, and are not usually arranged in a mesh shape, the terminal devices can be self-organized by using bluetooth broadcast communication, such as a bottom layer broadcast communication mechanism of a bluetooth protocol stack, through signal strength, so that tedious steps of manually networking the terminal devices are reduced, networking is more flexible, and random installation of the terminal devices is realized.
Example 3
Referring to fig. 1, an ad hoc network method based on bluetooth broadcast communication includes the following steps:
a. the number 1 terminal equipment is firstly used as information source equipment to initiate a networking request data packet;
b. after receiving the networking request data packet, the No. 2 target device, the No. 3 target device, the No. 4 target device, the No. 5 target device and other terminal devices return a response and send out a data response packet;
c. the No. 1 terminal equipment receives data response packets of the No. 2 target equipment, the No. 3 target equipment, the No. 4 target equipment, the No. 5 target equipment and other terminal equipment and then performs data packet analysis;
d. the method comprises the steps that 1, for a data packet of unnumbered equipment, a numbering command packet is set by the terminal equipment according to the signal intensity of the data packet, the target equipment with the strongest signal is set to be No. 2 according to the principle that the signal intensity is strong when the distance between the terminal equipment and the target equipment is short, then the signal intensity is No. 3, and the like, numbering instructions are sent to the No. 2 target equipment, the No. 3 target equipment, the No. 4 target equipment and the No. 5 target equipment, and a successful numbering response packet is waited to be sent back by the target equipment;
e. after receiving the successful numbering response packets of the target equipment No. 2, the target equipment No. 3, the target equipment No. 4 and the target equipment No. 5, the terminal equipment No. 1 stops numbering and orders to broadcast, finishes the first numbering, and transfers the numbering task to the target equipment No. 5 for the second numbering;
f. and the No. 5 target equipment serving as the information source equipment repeats the numbering process of the No. 1 terminal equipment, and the numbering process is sequentially carried out until all the terminal equipment are numbered, so that the ad hoc network is completed.
In the step a, specifically, initiating the networking request data packet refers to sending through a field mobile phone APP.
In the step b, the specific receiving of the networking request data packets refers to sequentially receiving the networking request data packets according to the direct proportion relationship between the intensity of the Bluetooth signals and the physical distance.
In the step c, the data packet analysis specifically refers to analyzing a unique 6-byte MAC address, data packet signal strength and whether the data packet is unnumbered equipment or not.
Compared with the traditional networking mode, the networking mode is simpler, the communication is more stable and reliable, and the applicability is strong.
Example 4
Referring to fig. 1, an ad hoc network method based on bluetooth broadcast communication includes the following steps:
a. the number 1 terminal equipment is firstly used as information source equipment to initiate a networking request data packet;
b. after receiving the networking request data packet, the No. 2 target device, the No. 3 target device, the No. 4 target device, the No. 5 target device and other terminal devices return a response and send out a data response packet;
c. the No. 1 terminal equipment receives data response packets of the No. 2 target equipment, the No. 3 target equipment, the No. 4 target equipment, the No. 5 target equipment and other terminal equipment and then performs data packet analysis;
d. the method comprises the steps that 1, for a data packet of unnumbered equipment, a numbering command packet is set by the terminal equipment according to the signal intensity of the data packet, the target equipment with the strongest signal is set to be No. 2 according to the principle that the signal intensity is strong when the distance between the terminal equipment and the target equipment is short, then the signal intensity is No. 3, and the like, numbering instructions are sent to the No. 2 target equipment, the No. 3 target equipment, the No. 4 target equipment and the No. 5 target equipment, and a successful numbering response packet is waited to be sent back by the target equipment;
e. after receiving the successful numbering response packets of the target equipment No. 2, the target equipment No. 3, the target equipment No. 4 and the target equipment No. 5, the terminal equipment No. 1 stops numbering and orders to broadcast, finishes the first numbering, and transfers the numbering task to the target equipment No. 5 for the second numbering;
f. and the No. 5 target equipment serving as the information source equipment repeats the numbering process of the No. 1 terminal equipment, and the numbering process is sequentially carried out until all the terminal equipment are numbered, so that the ad hoc network is completed.
In the step a, the specific step of initiating the networking request data packet refers to the step of remotely sending the networking request data packet through the platform.
In the step b, the specific receiving of the networking request data packets refers to sequentially receiving the networking request data packets according to the direct proportion relationship between the intensity of the Bluetooth signals and the physical distance.
In the step c, the data packet analysis specifically refers to analyzing a unique 6-byte MAC address, data packet signal strength and whether the data packet is unnumbered equipment or not.
In the step d, the numbering command packet specifically means that a unique corresponding mapping relation is established between the 6-byte MAC address and the virtual 1-9999 virtual equipment number.
And the step of quitting the networking in an overtime mode, specifically, the step is preset time, and when the number success response packet of the target equipment is not received after the preset time is exceeded, the step of quitting the networking in the numbering mode is stopped.
In the step f, completing the ad hoc network specifically means setting the networking position of the terminal equipment according to the serial number of the terminal equipment, and performing data transmission between the terminal equipment through Bluetooth broadcast communication.
Compared with a communication node network in a grid distribution mode, the method has the advantages that the linear networking mode has the characteristic of good redundancy, the whole operation cannot be influenced even if part of terminal equipment fails, and the operation is more stable.
The whole automatic numbering process of the invention is as follows:
initiating a data packet:
the end position terminal equipment with the number of 1 initiates an ad hoc network numbering signal packet, for information source equipment initiating networking, the former 4 terminal equipment and the latter 4 terminal equipment are programmed into a white list MAC address each time, and the goal of realizing numbering is shown in table 1, wherein table 1 is a numbering state table of the equipment initiating networking.
TABLE 1
Automatic numbering:
the numbering process of the No. 5 terminal device is consistent with that of the No. 1 terminal device, the numbering process is a process of sequential circular propulsion, the numbering process continues to be propelled forwards, and the numbering process refers to a table 2, and the table 2 is a device numbering state table in the networking process.
TABLE 2
The queue tail terminal device takes terminal device No. 1000 as an example, the numbering process of terminal device No. 1000 is consistent with that of terminal device No. 5, after the numbering of the group is finished, the automatic numbering is finished without sending an automatic grouping instruction, and referring to table 3, table 3 is a numbering state table of networking finishing devices.
TABLE 3
As can be seen from tables 1 to 3, the whole process from the initiation of the data packet to the automatic numbering is flexible in networking, so that the tedious steps of manually networking the terminal equipment are reduced, and the networking is more efficient.
Claims (7)
1. An ad hoc network method based on Bluetooth broadcast communication is characterized by comprising the following steps:
a. the number 1 terminal equipment is firstly used as information source equipment to initiate a networking request data packet;
b. after receiving the networking request data packet, the No. 2 target device, the No. 3 target device, the No. 4 target device, the No. 5 target device and other terminal devices return a response and send out a data response packet;
c. the No. 1 terminal equipment receives data response packets of the No. 2 target equipment, the No. 3 target equipment, the No. 4 target equipment, the No. 5 target equipment and other terminal equipment and then performs data packet analysis;
d. the method comprises the steps that 1, for a data packet of unnumbered equipment, a numbering command packet is set by the terminal equipment according to the signal intensity of the data packet, the target equipment with the strongest signal is set to be No. 2 according to the principle that the signal intensity is strong when the distance between the terminal equipment and the target equipment is short, then the signal intensity is No. 3, and the like, numbering instructions are sent to the No. 2 target equipment, the No. 3 target equipment, the No. 4 target equipment and the No. 5 target equipment, and a successful numbering response packet is waited to be sent back by the target equipment;
e. after receiving the successful numbering response packets of the target equipment No. 2, the target equipment No. 3, the target equipment No. 4 and the target equipment No. 5, the terminal equipment No. 1 stops numbering and orders to broadcast, finishes the first numbering, and transfers the numbering task to the target equipment No. 5 for the second numbering;
f. and the No. 5 target equipment serving as the information source equipment repeats the numbering process of the No. 1 terminal equipment, and the numbering process is sequentially carried out until all the terminal equipment are numbered, so that the ad hoc network is completed.
2. The ad-hoc network method based on bluetooth broadcast communication according to claim 1, wherein: in the step a, initiating the networking request data packet specifically means sending through a platform remote or on-site mobile phone APP.
3. The ad-hoc network method based on bluetooth broadcast communication according to claim 1, wherein: in the step b, the specific receiving of the networking request data packets refers to sequentially receiving the networking request data packets according to the direct proportion relationship between the intensity of the Bluetooth signals and the physical distance.
4. The ad-hoc network method based on bluetooth broadcast communication according to claim 1, wherein: in the step c, the data packet analysis specifically refers to analyzing a unique 6-byte MAC address, data packet signal strength and whether the data packet is unnumbered equipment or not.
5. The ad-hoc network method based on bluetooth broadcast communication according to claim 1, wherein: in the step d, the numbering command packet specifically means that a unique corresponding mapping relation is established between the 6-byte MAC address and the virtual 1-9999 virtual equipment number.
6. The ad-hoc network method based on bluetooth broadcast communication according to claim 1, wherein: and the step of quitting the networking in an overtime mode, specifically, the step is preset time, and when the number success response packet of the target equipment is not received after the preset time is exceeded, the step of quitting the networking in the numbering mode is stopped.
7. The ad-hoc network method based on bluetooth broadcast communication according to claim 1, wherein: in the step f, completing the ad hoc network specifically means setting the networking position of the terminal equipment according to the serial number of the terminal equipment, and performing data transmission between the terminal equipment through Bluetooth broadcast communication.
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| CN115134951A (en) * | 2022-06-22 | 2022-09-30 | 汉威科技集团股份有限公司 | A peer-to-peer mode wireless networking communication method |
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