CN107148071B - Ubiquitous access method and system based on low-power-consumption wide area network and Mesh fusion - Google Patents
Ubiquitous access method and system based on low-power-consumption wide area network and Mesh fusion Download PDFInfo
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- CN107148071B CN107148071B CN201710258396.3A CN201710258396A CN107148071B CN 107148071 B CN107148071 B CN 107148071B CN 201710258396 A CN201710258396 A CN 201710258396A CN 107148071 B CN107148071 B CN 107148071B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a ubiquitous access method and an application system based on low-power-consumption wide area network technology and Mesh fusion. The scheme provides an access method for fusing a low-power-consumption wide area network technology and a Mesh technology aiming at certain outdoor or indoor areas with dense terminal equipment and poor 4G network signals. The low-power-consumption wide area base station is provided with a 4G module, and data can be reported to a service server through a 4G network by route forwarding as long as any one base station can be connected with the Internet. The invention fully utilizes the low-power-consumption wide area network technology and the stability and reliability of the Mesh network, and realizes terminal access and Mesh network return through the low-power-consumption wide area network technology, so that data can be smoothly transmitted and reported under the condition that certain base stations have poor 4G signals.
Description
Technical Field
The invention relates to a ubiquitous access method based on low-power-consumption wide area network technology and Mesh fusion, and belongs to the technical field of communication.
Background
Before the Low Power Wide Area Network (LPWAN) was created, only one of the two seemed to be selectable between low power and wide area networks. The low-power-consumption wide area network can not only meet longer-distance communication, but also enable the power consumption to be at a lower level. NB-IoT, LoRa, RPMA and the like are low-power consumption wide area network communication technologies, have the characteristics of wide coverage, more connections, low speed, low cost, low power consumption and the like, are very suitable for the application of the low-power consumption Internet of things, and can realize coverage and connection with meters deeply buried in underground pipe networks and various corners. A low power wan access gateway module may be capable of connecting thousands of terminals per square kilometer, allowing a large number of terminals to access the network.
A Mesh network is a multi-hop network in which each node can send and receive signals and can communicate directly with one or more peer nodes. Therefore, a Mesh networking can be established by using the low-power-consumption technology of the wide area network for routing forwarding, and each low-power-consumption wide area network base station is a Mesh node, so that the reliability of data transmission is fully ensured. The Mesh network is deployed quickly, and each low-power-consumption wide area network base station is provided with a 4G module and has a 4G internet access function so as to report data in time.
Disclosure of Invention
The technical problem is as follows: according to the invention, a ubiquitous access method based on a low-power-consumption wide area network technology and Mesh fusion is designed according to the real-time requirement of acquired data, and a wireless Mesh network is flexibly established by a low-power-consumption wide area network base station. Meanwhile, a plurality of low-power-consumption wide area network terminals are conveniently and quickly accessed to realize data transmission. Therefore, the technical problems that the outdoor or densely populated indoor 4G mobile network has poor signal coverage and partial data cannot be uploaded are solved.
The technical scheme is as follows: the ubiquitous access method based on the low-power-consumption wide area network technology and Mesh fusion comprises the following communication processes:
1) the low-power-consumption wide area network access gateway module and the low-power-consumption wide area network terminals automatically establish a star-type low-power-consumption wide area network;
2) the low-power-consumption wide area network base station automatically discovers other low-power-consumption wide area network base stations distributed around and forms a Mesh network with the low-power-consumption wide area network base stations;
3) the 4G module of each low-power-consumption wide area network base station generates a corresponding file descriptor, equipment information is broadcast to other base stations in the network, and each low-power-consumption wide area network base station detects the own 4G signal intensity at regular time and informs the other base stations;
4) the low-power wide area network base station adopts a TDMA technology, and in a time slot of communication between the low-power wide area network base station and the terminal, the base station receives data information sent by the terminal; if the base station 4G network signal is good, directly uploading the data to a server by self;
5) if the low-power-consumption wide area network base station 4G network signal is poor or even unavailable, firstly, temporarily storing the information in a storage module; when the communication time slot between the base stations is waited, the help-seeking broadcast is issued to other base stations in the Mesh network, each base station updates the 4G unavailable state information after receiving the broadcast information, and simultaneously feeds back the 4G signal intensity and busy and idle state information of the low-power-consumption wide area network base station; the base station selects the low-power-consumption wide area network base station with better signal and in an idle state to send a forwarding request, and after receiving a positive response, the base station forwards data to a target base station, and the target base station is uploaded to a server instead of the target base station.
And 1) the low-power-consumption wide area network base station communicates with the low-power-consumption wide area network base station and the low-power-consumption wide area network terminal in a time slot by adopting a TDMA working mode.
An application system of the method comprises a low-power-consumption wide area network base station and each low-power-consumption wide area network terminal:
the low-power-consumption wide area network base station integrates a core processor, a 4G module, a low-power-consumption wide area network access gateway module, a storage module, a routing module and a power supply; the core processor is connected with the 4G module, the low-power-consumption wide area network access gateway module, the storage module and the routing module.
A core processor: the 4G signal strength of the current position is obtained and whether the signal strength is forwarded or not is judged;
a 4G module: uploading data collected from the terminal to the Internet;
the low-power wide area network access gateway module: receiving data information sent by each low-power-consumption wide area network terminal;
a storage module: when the 4G network signal is not good, the collected data is temporarily stored so as to carry out return transmission in the communication time slot between the base stations;
a routing module: realizing a forwarding function, and forwarding the data of the base station to the next base station according to an instruction issued by the core processor;
a power supply module: providing power for various work operations;
and the low-power-consumption wide area network terminal acquires data and uploads the data to the base station.
The low-power-consumption wide area network terminal access and the Mesh network return between the base stations are realized by a low-power-consumption wide area network technology.
Has the advantages that: compared with the prior art, the invention has the following advantages:
(1) the low-power-consumption wide area network terminal and the low-power-consumption wide area network base station adopt the low-power-consumption wide area network technology for communication and a point-to-point communication mode, so that the aim of remote transmission is fulfilled, data acquisition is realized at low cost, and the low-power-consumption wide area network terminal and the low-power-consumption wide area network base station have the characteristics of low power consumption, strong signal penetrability and high sensitivity.
(2) The invention fully utilizes the flexibility and the robustness of the Mesh network, relies on the data transmission among a plurality of low-power-consumption wide area network base stations, and reasonably controls the data uploading according to different 4G signal conditions of each low-power-consumption wide area network base station, so that the operation process of the whole system is more reliable. Meanwhile, the Mesh network formed by the low-power-consumption wide area network technology does not need to carry other networking modules, so that the power consumption can be better reduced, and the system can be kept running for a longer time.
(3) The access and Mesh network return modes are carried out by the low-power-consumption wide area network technology, so that data of a large number of data points can be collected and reliably uploaded to a service server in real time. Meanwhile, due to the addition of the plurality of low-power-consumption wide area network base stations, the number of accessible low-power-consumption wide area network terminals is increased by times, the practical application range is wider, and the method is more suitable for application in the Internet of things.
Drawings
Fig. 1 is a schematic diagram of a ubiquitous access method based on low-power-consumption wide area network technology and Mesh fusion;
FIG. 2 is a network structure diagram of a ubiquitous access method based on low-power wide area network technology and Mesh fusion;
FIG. 3 is a diagram of a base station protocol stack of a ubiquitous access method based on low power consumption WAN (Wide area network) technology and Mesh fusion;
FIG. 4 is a diagram of a base station of a ubiquitous access method based on a low-power wide area network technology and Mesh fusion;
fig. 5 is a software flowchart of a ubiquitous access method based on low-power wide area network technology and Mesh fusion.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
The ubiquitous access method based on the low-power-consumption wide area network technology and Mesh fusion mainly completes three aspects of work:
(1) the low-power-consumption wide area network terminal acquires and sends data information;
(2) the Mesh return network constructed by the low-power-consumption wide area network base station is utilized to transmit information in real time, and a seamless connection transmission network is realized;
(3) and establishing a remote server system, receiving information sent by the low-power-consumption wide area network base station and processing the information.
The ubiquitous access method based on the low-power-consumption wide area network technology and Mesh fusion is developed and designed aiming at the scene of poor 4G network signals, the requirement of real-time data transmission is fully met, and a network structure diagram is shown in figure 2.
(I) design of application scheme
The wireless Mesh network automatically initiates a connection establishment request, and a low-power wide area network base station automatically establishes the wireless Mesh network. And each low-power-consumption wide area network base station opens a 4G networking function and monitors the self 4G network signal intensity in real time. The low-power-consumption wide area network terminal collects data and sends the data to a corresponding low-power-consumption wide area network base station, and if the current 4G network signal of the low-power-consumption wide area network base station is good, the data are uploaded to the Internet through the 4G network of the base station; and if the 4G network signal of the current base station is poor, forwarding the data to other low-power-consumption wide area network base stations to be uploaded. The communication between the base stations and the communication between the terminals adopt the low-power-consumption wide area network technology. The same frequency interference problem can be generated when the equipment works in the same frequency band. Therefore, the invention adopts the TDMA technology, and the traffic channels are distributed to different base stations or terminals at different times, thereby avoiding co-channel interference. The invention fully considers the requirement of data real-time uploading, on one hand, the whole acquisition and uploading process does not need human intervention, on the other hand, the invention has the characteristic of heterogeneous network cooperation, and meets the application requirement of the next generation network.
The wireless communication process is as follows:
(1) each low-power-consumption wide area network access gateway module and a plurality of low-power-consumption wide area network terminals automatically establish a star-type low-power-consumption wide area network.
(2) The low-power-consumption wide area network base station automatically discovers other low-power-consumption wide area network base stations distributed around the low-power-consumption wide area network base station and forms a Mesh network with the low-power-consumption wide area network base stations.
(3) The 4G module of the low-power-consumption wide area network base station generates a corresponding file descriptor, equipment information is broadcast to other base stations in the Mesh network, and each low-power-consumption wide area network base station detects the own 4G signal intensity at regular time and informs other base stations.
(4) The low-power wide area network base station adopts a TDMA technology, and the base station receives data information sent by the terminal in a time slot of communication between the low-power wide area network base station and the terminal. If the base station 4G network signal is good, the data is directly uploaded to the server by the user.
(5) If the low power consumption WAN base station 4G has bad or even unavailable network signal, the data is temporarily stored in the memory. When the communication time slot between the base stations arrives, the help-seeking broadcast is issued to other base stations in the Mesh network, and after receiving the broadcast information, each base station feeds back the self 4G signal intensity and busy-idle state information to the low-power-consumption wide area network base station. The low-power-consumption wide area network base station selects a base station which has a better signal and is in an idle state to send a forwarding request, and after receiving a positive response, data are forwarded to a target base station and are uploaded to a service server instead of the target base station.
Claims (4)
1. The ubiquitous access method based on the low-power-consumption wide area network technology and Mesh fusion is characterized by comprising the following communication processes:
1) the low-power-consumption wide area network access gateway module and the low-power-consumption wide area network terminals automatically establish a star-type low-power-consumption wide area network;
2) the low-power-consumption wide area network base station automatically discovers other low-power-consumption wide area network base stations distributed around and forms a Mesh network with the low-power-consumption wide area network base stations;
3) the 4G module of each low-power-consumption wide area network base station generates a corresponding file descriptor, equipment information is broadcast to other base stations in the network, and each low-power-consumption wide area network base station detects the own 4G signal intensity at regular time and informs the other base stations;
4) the low-power wide area network base station adopts a TDMA technology, and in a time slot of communication between the low-power wide area network base station and the terminal, the base station receives data information sent by the terminal; if the base station 4G network signal is good, directly uploading the data to a server by self;
5) if the low-power-consumption wide area network base station 4G network signal is poor or even unavailable, firstly, temporarily storing the information in a storage module; when the communication time slot between the base stations is waited, the help-seeking broadcast is issued to other base stations in the Mesh network, each base station updates the 4G unavailable state information after receiving the broadcast information, and simultaneously feeds back the 4G signal intensity and busy and idle state information of the low-power-consumption wide area network base station; the base station selects the low-power-consumption wide area network base station with better signal and in an idle state to send a forwarding request, and after receiving a positive response, the base station forwards data to a target base station, and the target base station is uploaded to a server instead of the target base station.
2. The access method according to claim 1, wherein the low power consumption wan base station in the communication process 1) adopts a TDMA operation mode to communicate with the low power consumption wan base station and the low power consumption wan terminal in time slots.
3. The application system of the method of claim 1, comprising the low power wide area network base station and each low power wide area network terminal:
the low-power-consumption wide area network base station integrates a core processor, a 4G module, a low-power-consumption wide area network access gateway module, a storage module, a power supply and a routing module; the core processor is connected with the 4G module, the low-power-consumption wide area network access gateway module, the storage module and the routing module;
a core processor: the 4G signal strength of the current position is obtained and whether the signal strength is forwarded or not is judged;
a 4G module: uploading data collected from the terminal to the Internet;
the low-power wide area network access gateway module: receiving data information sent by each low-power-consumption wide area network terminal;
a storage module: when the 4G network signal is not good, the collected data is temporarily stored so as to carry out return transmission in the communication time slot between the base stations;
a routing module: realizing a forwarding function, and forwarding the data of the base station to the next base station according to an instruction issued by the core processor;
a power supply module: providing power for various work operations;
and the low-power-consumption wide area network terminal acquires data and uploads the data to the base station.
4. The system of claim 3, wherein the low power WAN terminal access and the Mesh network backhaul between the base stations are implemented by low power WAN technology.
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