CN112752234A

CN112752234A - Communication link transmission method and system based on narrowband wireless ad hoc network

Info

Publication number: CN112752234A
Application number: CN202011622283.5A
Authority: CN
Inventors: 王磊; 张文杰; 石巍; 王双博
Original assignee: Shenzhen Zhongchuang Aibao Technology Co ltd
Current assignee: Shenzhen Zhongchuang Aibao Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-05-04

Abstract

The embodiment of the application discloses a communication link transmission method and a system based on a narrowband wireless ad hoc network, wherein the method comprises the following steps: the acquisition controller acquires node data acquired by the front-end sensor in real time through a wired link; the ad hoc network system transmits the node data acquired from the acquisition controller to the back end through an ad hoc network wireless air link; after receiving the node data, the ad hoc network receiving equipment transmits the processed data to the intelligent terminal equipment through a Bluetooth communication link after local processing. Therefore, wired acquisition, wireless transmission and cross-link and cross-region real-time acquisition of standard Bluetooth transmission of the whole data are realized.

Description

Communication link transmission method and system based on narrowband wireless ad hoc network

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a communication link transmission method and system based on a narrowband wireless ad hoc network.

Background

With the rapid development of modern science and technology, the communication coverage requirement of a wireless dispatching communication network is increasingly extremely high, except that cities need to be covered, the interior needs to be covered, barren mountains and wildlands also need to be covered, and the emergency communication coverage is more needed when earthquake and flood communication facilities are paralyzed.

In order to realize the emergency communication, the networking requirements of the new generation emergency dispatching communication system are as follows: the communication network is constructed quickly, simply and automatically, and the operation is reliable and stable, and basically belongs to a maintenance-free system.

Disclosure of Invention

Therefore, the embodiment of the application provides a communication link transmission method and system based on a narrowband wireless ad hoc network, so that the wired acquisition, the wireless transmission and the cross-link and cross-region real-time acquisition of the whole data are realized.

In order to achieve the above object, the embodiments of the present application provide the following technical solutions:

according to a first aspect of embodiments of the present application, a communication link transmission method based on a narrowband wireless ad hoc network is provided, the method including:

the acquisition controller acquires node data acquired by the front-end sensor in real time through a wired link;

the ad hoc network system transmits the node data acquired from the acquisition controller to the back end through an ad hoc network wireless air link;

after receiving the node data, the ad hoc network receiving equipment transmits the processed data to the intelligent terminal equipment through a Bluetooth communication link after local processing.

Optionally, the acquiring controller acquires, in real time, node data acquired by the front-end sensor through a wired link, and includes:

the acquisition controller sends a data acquisition instruction according to the ID of the target sensor;

and each front-end sensor judges whether the ID of the target sensor is consistent with the ID of the sensor according to the received data acquisition instruction, and if so, the node data is transmitted back to the acquisition controller.

Optionally, the ad hoc network communication protocol module is divided into an MAC layer protocol and a network layer protocol; the MAC layer protocol is based on a TDMA access mode to realize the functions of system synchronization, network management, multiple access, service data caching, splitting, cascading and submitting, and the network layer protocol realizes a routing function.

Optionally, the MAC layer includes an SDU caching module, a PDU caching module, a synchronization module, a network management module, a multiple access module, an SDU processing module, and a user management module;

the SDU caching module is used for caching service data from an upper layer; the PDU buffer module is used for buffering service data and/or segments from an air interface, recombining the service data and/or segments into a complete SDU and submitting the complete SDU to an upper layer; the synchronization module is used for ensuring the clock synchronization of each node in the network in a self-synchronization mode; the network management module is used for maintaining network operation; the multiple access module is used for scheduling air interface resources; the SDU processing module is used for splitting and recombining upper layer data; the user management module is used for configuring network and user parameters and displaying network information; the routing module is used for data transmission routing.

Optionally, the method adopts a baseband spread spectrum processing technology, recovers the useful signal into a narrow-band signal, and spreads the useless signal into a wide-band signal to increase the signal-to-interference ratio at the output end of the correlator;

the method also adopts an ultra-narrow band low-sensitivity communication technology and a multi-path concurrent narrowband-oriented ad hoc network technology.

According to a second aspect of the embodiments of the present application, there is provided a communication link transmission system based on a narrowband wireless ad hoc network, the system including:

the acquisition controller is used for acquiring node data acquired by the front-end sensor in real time through a wired link;

the ad hoc network system is used for transmitting the node data acquired from the acquisition controller to a back end through an ad hoc network wireless air link;

and the ad hoc network receiving equipment is used for receiving the node data, locally processing the node data and transmitting the processed node data to the intelligent terminal equipment through a Bluetooth communication link.

According to a third aspect of embodiments herein, there is provided an apparatus comprising: the device comprises a data acquisition device, a processor and a memory; the data acquisition device is used for acquiring data; the memory is to store one or more program instructions; the processor is configured to execute one or more program instructions to perform the method of any of the first aspect.

According to a fourth aspect of embodiments herein, there is provided a computer-readable storage medium having one or more program instructions embodied therein for performing the method of any of the first aspects.

To sum up, the embodiment of the present application provides a communication link transmission method and system based on a narrowband wireless ad hoc network, which obtains node data acquired by a front-end sensor in real time through a wired link by an acquisition controller; the ad hoc network system transmits the node data acquired from the acquisition controller to the back end through an ad hoc network wireless air link; after receiving the node data, the ad hoc network receiving equipment transmits the processed data to the intelligent terminal equipment through a Bluetooth communication link after local processing. Therefore, wired acquisition, wireless transmission and cross-link and cross-region real-time acquisition of standard Bluetooth transmission of the whole data are realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.

Fig. 1 is a schematic flowchart of a communication link transmission method based on a narrowband wireless ad hoc network according to an embodiment of the present application;

fig. 2 is a schematic view of a service flow provided in an embodiment of the present application;

fig. 3 is a schematic diagram of a system software start-up workflow provided in an embodiment of the present application;

FIG. 4 is a schematic diagram of a sensor data flow provided by an embodiment of the present application;

fig. 5 is a schematic diagram of a communication protocol module according to an embodiment of the present application;

fig. 6 is a block diagram of a communication link transmission system based on a narrowband wireless ad hoc network according to an embodiment of the present application.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the application provides a transmission method capable of realizing cross-wired, microwave and Bluetooth communication links based on a narrowband wireless ad hoc network system architecture, and high timeliness and high reliability of data transmission are realized. The following explains the terms related to the embodiments of the present application.

Narrowband wireless ad hoc networks: a multi-hop mobility peer-to-peer network with dynamic networking of several to tens of nodes is implemented using narrow-band wireless links.

Wired: the physical connection implemented between two communication devices, in any form, is intended to transmit signals from one party to the other.

The embodiment of the application relates to an ad hoc network communication technology, a computer network communication technology and a Bluetooth communication technology. The method aims to solve the communication link switching guarantee in special scenes of distributed distribution of a plurality of information acquisition points and a plurality of information receiving points, complex communication geographic environment and the like.

Fig. 1 is a flowchart of a communication link transmission method based on a narrowband wireless ad hoc network according to an embodiment of the present application, and as shown in fig. 1, the method includes:

step 101: the acquisition controller acquires node data acquired by the front-end sensor in real time through a wired link;

step 102: the ad hoc network system transmits the node data acquired from the acquisition controller to the back end through an ad hoc network wireless air link;

step 103: after receiving the node data, the ad hoc network receiving equipment transmits the processed data to the intelligent terminal equipment through a Bluetooth communication link after local processing.

In one possible implementation, in step 101, the acquiring controller acquires node data acquired by a front-end sensor in real time through a wired link, including: the acquisition controller sends a data acquisition instruction according to the ID of the target sensor; and each front-end sensor judges whether the ID of the target sensor is consistent with the ID of the sensor according to the received data acquisition instruction, and if so, the node data is transmitted back to the acquisition controller.

In one possible implementation, the ad hoc network communication protocol module is divided into an MAC layer protocol and a network layer protocol; the MAC layer protocol is based on a TDMA access mode to realize the functions of system synchronization, network management, multiple access, service data caching, splitting, cascading and submitting, and the network layer protocol realizes a routing function.

In one possible implementation, the MAC layer includes an SDU caching module, a PDU caching module, a synchronization module, a network management module, a multiple access module, an SDU processing module, and a user management module; the SDU caching module is used for caching service data from an upper layer; the PDU buffer module is used for buffering service data and/or segments from an air interface, recombining the service data and/or segments into a complete SDU and submitting the complete SDU to an upper layer; the synchronization module is used for ensuring the clock synchronization of each node in the network in a self-synchronization mode; the network management module is used for maintaining network operation; the multiple access module is used for scheduling air interface resources; the SDU processing module is used for splitting and recombining upper layer data; the user management module is used for configuring network and user parameters and displaying network information; the routing module is used for data transmission routing.

In one possible implementation, the method adopts a baseband spread spectrum processing technology to recover the useful signal into a narrow-band signal and spread the useless signal into a wide-band signal so as to increase the signal-to-interference ratio at the output end of the correlator; the method also adopts an ultra-narrow band low-sensitivity communication technology and a multi-path concurrent narrowband-oriented ad hoc network technology.

Fig. 2 shows an exemplary diagram of a business process provided by an embodiment of the present application. As shown in fig. 2, the scheme relies on a computer network communication technology, data of a front-end information acquisition node is acquired in real time through a wired link, the data is transmitted to a rear end through an ad hoc wireless air link through a narrow-band ad hoc network acquisition device, and after the data is acquired by an ad hoc network receiving device, the data is locally processed and then transmitted to the intelligent handheld device through a bluetooth communication link. Therefore, wired acquisition, wireless transmission and cross-link and cross-region real-time acquisition of standard Bluetooth transmission of the whole data are realized.

The scheme is mainly based on narrow-band ad hoc network communication to communicate a wired communication link with a wireless communication link, but communication connection can be realized only when the wireless ad hoc network communication nodes reach a standard communication condition, and relay nodes need to be added under a non-communication environment.

In order to meet the requirement that a message is transmitted to all nodes in a network in a packet network in an ad hoc network, a multi-point cooperative relay high-dynamic routing technology is adopted, flooding is reduced through a clustering structure, the performance of a routing protocol in a large-scale network is improved, and the method has good expandability and network survivability.

The system software start workflow design provided by the embodiment of the application is shown in fig. 3.

Step 1: firstly, judging whether the ID is more than three, if so, executing the step 2; if the number is less than or equal to three, executing the step 3;

step 2: the receiving controller continuously detects the command of receiving the self-networking data or receiving the Bluetooth; specifically, when receiving a command transmitted through bluetooth, sending the received bluetooth command to a corresponding acquisition end device through an ad hoc network; when receiving the ad hoc network data, the data is sent to the mobile phone through Bluetooth.

And step 3: the acquisition controller continuously detects 500ms interrupt signals or Bluetooth commands; if a Bluetooth command transmitted through the ad hoc network is received, realizing a corresponding function according to the received command; and if the 500ms interrupt signal is received, reading the sensor data, successfully acquiring, and sending and receiving to a receiving end through the ad hoc network.

The sensor data flow provided by the embodiments of the present application is generally designed as shown in fig. 4. The acquisition controller acquires data from the wind speed sensor through an RS485 data line at regular time, analyzes and judges that the received data is correct, and then sends the data to the air through the ad-hoc network system, and after the ad-hoc network system of the receiving controller receives the data, the data are sent to the Bluetooth module through the RS232, and then the Bluetooth module sends the data to the terminal through a Bluetooth wireless signal, wherein the terminal can be handheld or wearable, for example, a mobile phone, and the APP can receive the data. Each step is described in further detail below.

In a first aspect, a front-end data sampling flow.

The principle of front-end sensor collection is as follows: the data interface of the sensor is RS485, according to the characteristics of the sensor, each sensor can be provided with different ID numbers, when a data acquisition unit needs to acquire data of one sensor, a corresponding command is issued first, wherein the command comprises the ID number, all the sensors can simultaneously receive the command, each sensor checks whether the ID number in the command is consistent with the ID number of the sensor, and if the ID number in the command is not consistent with the ID number of the sensor, the sensor ignores the command and does not perform any processing. Otherwise, returning the data of the sensor to the data acquisition unit according to the information in the command.

Therefore, in order to acquire data of all sensors, the central control chip needs to sequentially issue instructions to acquire data of corresponding sensors. The specific process is as follows:

step 1: and the data acquisition unit sends an instruction for acquiring the data of the No. 1 sensor equipment.

Step 2: the No. 1 sensor transmits data back to the data acquisition unit.

And step 3: and the data acquisition unit sends an instruction for acquiring the data of the No. 2 sensor equipment.

And 4, step 4: the No. 2 sensor transmits data back to the data acquisition unit.

……

In a second aspect, an ad hoc network escape transmission procedure.

The ad hoc network communication protocol module is divided into two parts of an MAC layer protocol and a network layer protocol, and a schematic diagram of the communication protocol module is shown in FIG. 5. The MAC layer protocol is based on a TDMA access mode and mainly realizes the functions of system synchronization, network management, multiple access, service data caching, splitting, cascading, submitting and the like, and the network layer protocol mainly realizes a routing function.

The network layered architecture fuses the idea of cross-layer design. And the user management carries out unified management on parameter configuration of each layer of the network. In order to facilitate cross-layer consideration among protocols of each layer of the network, the shared database is set to store data (such as link quality) related to cross-layer design in a consistent data format, and each functional layer in the network can contribute or read shared state information to the shared database. The shared database enables only control information to be transmitted between layers, and shared state information providing basis for decision making is read from the shared database.

The MAC module comprises an SDU cache module, a PDU cache module, a synchronization module, a network management module, a multiple access module, an SDU processing module and a user management module.

The SDU caching module is used for caching service data from an upper layer; PDU buffer module, which is used to buffer the service data/segment from air interface, and regroups into a complete SDU and delivers it to the upper layer; the synchronization module is used for ensuring the clock synchronization of each node in the network in a self-synchronization mode; the network management module is used for maintaining network operation and has the functions of network access, network establishment, network convergence and the like; the multi-address access module is used for scheduling air interface resources; the SDU processing module is used for splitting and recombining the upper layer data; the user management module is used for configuring network/user parameters and displaying network information; and the routing module is used for data transmission routing.

As a private network protocol, the protocol provided in the embodiments of the present application provides strong support and guarantee for service transmission. The exquisite distributed network control mechanism enables the network fusion, segmentation, self-healing and other scenes to be quickly responded without depending on external clock synchronization under the condition that air interface resources are short; on the basis of ensuring the maximum connectivity of the network, the node can automatically select the most robust communication link to form the network so as to effectively deal with the instability of the wireless link and the oscillation among the links; under the condition that air interface resources are relatively limited, a simple and efficient resource scheduling mechanism ensures low delay of service transmission, and a network can support 6 hops or even more on the premise of meeting service requirements, so that the coverage capability of the network is further improved.

In a third aspect, a bluetooth transmission procedure.

On the one hand, the receiving end needs to send data to the mobile phone APP through the Bluetooth signal after receiving the data. On the other hand, in the installation and debugging situation, some parameters of the ad hoc network device need to be set through the APP, such as setting the ID, the radio frequency, the sensor number, and the like of the ad hoc network device.

Data reception: the receiving terminal receives data such as wind direction, wind speed through the ad hoc network, and immediately sends data to the APP through the Bluetooth signal.

Setting parameters: in order to improve the flexibility of the device, it is necessary to provide flexible partial system parameters which can be set by the APP, including commands for acquiring sensor data, and the like. Such as: and the No. 2 mobile phone App sends a command to set parameters of the sensor corresponding to the collector. The specific flow is as follows: no. 2 cell-phone APP sends the order to corresponding receiving equipment (No. 2) through bluetooth signal, No. 2 receiving equipment is according to the order content, with this order through wireless ad hoc network send to corresponding collection equipment, after the collection end received the order, after having executed the order of setting up the sensor parameter, will carry out the result (the result is success or failure) again and send to No. 2 receiving equipment through wireless ad hoc network, and final No. 2 equipment passes back the APP of result for No. 2 cell-phone through the bluetooth.

The scheme provided by the embodiment of the application is based on a narrowband wireless ad hoc network system architecture, and stability and reliability of data transmission in a complex electromagnetic environment in a transmission process are realized by relying on an anti-interference wireless communication technology; by means of an ultra-narrow-band low-sensitivity communication technology, two main problems of interference and frequency deviation are solved, and the communication distance is greatly expanded under the condition of enough bandwidth; by means of a narrowband-oriented design ad hoc network multi-path concurrency technology, the whole network can support 32 nodes at most, and the network can support 12 hops on the premise of meeting the QoS, so that the coverage capability of the network is further improved.

In a possible implementation mode, the existing wireless public network and other wireless communication means can be used for replacing the transmission part of the ad hoc network, and the unification of the whole communication conversion guarantee effect is realized.

In the embodiment of the application, an anti-interference reliable communication technology, an ultra-narrow-band low-sensitivity communication technology and an ad hoc network technology supporting multi-path concurrent narrow-band-oriented design are mainly adopted. These three techniques are explained in detail below.

1. Anti-interference reliable communication technology

The base band of the system adopts the spread spectrum processing technology, and integrates the 2 characteristics of good anti-interference performance and multi-address communication of the spread spectrum communication system to the maximum extent.

Spread spectrum communication is despread by adopting a correlation detection method at a receiving end, useful signals are recovered into narrow-band signals, useless signals are spread into wide-band signals, and the signal/interference ratio of the output end of a correlator is correspondingly increased, so that the anti-interference capability is stronger. The anti-jamming method has the capability of resisting most man-made broadband interference, narrow-band aiming type interference and relay forwarding type interference, and is favorable for electronic anti-jamming.

All transceivers in the multiple access communication network can work on the same frequency band at the same time, and receivers in the network can select corresponding spread spectrum code transmitters to be associated with, so that a plurality of users can share the frequency band, and the utilization rate of the frequency band is greatly improved.

2. Ultra-narrow band low sensitivity communication technology

In a physical layer communication system, a theoretical sensitivity is more likely to be achieved as the rate is larger, but since the communication distance is shorter because of the larger sensitivity, in order to extend the communication distance, the smaller the communication distance is, the better, but the theoretical sensitivity is less likely to be achieved as the rate is smaller, and the communication distance is more likely to be affected by interference and frequency offset.

The ultra-narrow band communication technology is based on a spread spectrum technology and a linear frequency modulation technology, the characteristics of the linear frequency modulation technology are fully utilized, two main problems of interference and frequency deviation are mainly solved, and the Linear Frequency Modulation (LFM) is a spread spectrum modulation technology without a pseudo-random coding sequence. Because the frequency bandwidth occupied by the chirp signal is much larger than the information bandwidth, a large system processing gain can be obtained. The receiving sensitivity is made to be-130 dBm, and the communication distance is greatly enlarged.

3. Self-networking technology supporting multi-path concurrent narrow-band-oriented design

The whole network supports 32 nodes at most, does not depend on external clock synchronization, and can quickly respond to scenes such as network fusion, segmentation and self-healing; on the basis of ensuring the maximum connectivity of the network, the node can automatically select the most robust communication link to form the network so as to effectively deal with the instability of the wireless link and the oscillation among the links; under the condition that narrow-band resources are relatively limited, a high-efficiency resource scheduling mechanism can realize the broadcast of 4-path data of the whole network at a low rate, simultaneously ensures low delay of services, and can support 12 hops on the premise of meeting QoS (quality of service), wherein the hop can be increased to 15 hops or even more according to requirements; the increase in the maximum number of hops that can be supported further improves the coverage capability of the network.

The ad hoc network protocol is the basis of the operation of the whole system, needs a certain bandwidth, is easier to design and implement when the system bandwidth is larger, and in a narrow-band system, because the bandwidth is lower, the information collection of the whole network is more difficult, and the narrow-band-oriented networking protocol needs to be designed.

An ad hoc network protocol supporting multi-channel concurrent design facing to narrow band is designed, and strong support and guarantee are provided for transmission of narrow band services. The exquisite distributed network control mechanism enables the whole network information to be quickly collected to realize the whole network resource allocation under the condition that narrow-band resources are in shortage, does not depend on external clock synchronization, and can quickly respond to scenes such as network fusion, segmentation, self-healing and the like; on the basis of ensuring the maximum connectivity of the network, the node can automatically select the most robust communication link to form the network so as to effectively deal with the instability of the wireless link and the oscillation among the links; under the condition that narrow-band resources are relatively limited, the high-efficiency resource scheduling mechanism can realize the broadcasting of 4-path data of the whole network at a low rate, simultaneously ensures the low delay of services, and achieves the purpose of the communication of the whole network ad hoc network.

Based on the same technical concept, an embodiment of the present application further provides a communication link transmission system based on a narrowband wireless ad hoc network, as shown in fig. 6, the system includes:

and the acquisition controller 601 is configured to acquire node data acquired by the front-end sensor in real time through a wired link.

And the ad hoc network system 602 is configured to transmit the node data acquired from the acquisition controller to a back end through an ad hoc network wireless air link.

And the ad hoc network receiving device 603 is configured to, after receiving the node data, transmit the processed data to the intelligent terminal device through the bluetooth communication link after local processing.

Based on the same technical concept, an embodiment of the present application further provides an apparatus, including: the device comprises a data acquisition device, a processor and a memory; the data acquisition device is used for acquiring data; the memory is to store one or more program instructions; the processor is configured to execute one or more program instructions to perform the method.

Based on the same technical concept, the embodiment of the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium contains one or more program instructions, and the one or more program instructions are used for executing the method.

In the present specification, each embodiment of the method is described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. Reference is made to the description of the method embodiments.

It is noted that while the operations of the methods of the present invention are depicted in the drawings in a particular order, this is not a requirement or suggestion that the operations must be performed in this particular order or that all of the illustrated operations must be performed to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions.

Although the present application provides method steps as in embodiments or flowcharts, additional or fewer steps may be included based on conventional or non-inventive approaches. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an apparatus or client product in practice executes, it may execute sequentially or in parallel (e.g., in a parallel processor or multithreaded processing environment, or even in a distributed data processing environment) according to the embodiments or methods shown in the figures. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded.

The units, devices, modules, etc. set forth in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, in implementing the present application, the functions of each module may be implemented in one or more software and/or hardware, or a module implementing the same function may be implemented by a combination of a plurality of sub-modules or sub-units, and the like. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may therefore be considered as a hardware component, and the means included therein for performing the various functions may also be considered as a structure within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.

The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, classes, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.

From the above description of the embodiments, it is clear to those skilled in the art that the present application can be implemented by software plus necessary general hardware platform. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, or the like, and includes several instructions for enabling a computer device (which may be a personal computer, a mobile terminal, a server, or a network device) to execute the method according to the embodiments or some parts of the embodiments of the present application.

The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The application is operational with numerous general purpose or special purpose computing system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable electronic devices, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like.

The above-mentioned embodiments are further described in detail for the purpose of illustrating the invention, and it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A communication link transmission method based on a narrowband wireless ad hoc network is characterized by comprising the following steps:

2. The method of claim 1, wherein the acquisition controller acquires node data acquired by a front-end sensor in real time over a wired link, comprising:

3. The method of claim 1, wherein the ad hoc network communication protocol module is divided into a MAC layer protocol and a network layer protocol; the MAC layer protocol is based on a TDMA access mode to realize the functions of system synchronization, network management, multiple access, service data caching, splitting, cascading and submitting, and the network layer protocol realizes a routing function.

4. The method of claim 3, wherein the MAC layer comprises an SDU buffering module, a PDU buffering module, a synchronization module, a network management module, a multiple access module, an SDU processing module, and a user management module;

5. The method of claim 1, wherein the method employs baseband spread spectrum processing techniques to recover the wanted signal as a narrowband signal and to spread the unwanted signal as a wideband signal to increase the signal-to-interference ratio at the output of the correlator;

6. A communication link transmission system based on a narrowband wireless ad hoc network, the system comprising:

7. The system of claim 6, wherein the ad hoc network communication protocol module is divided into a MAC layer protocol and a network layer protocol; the MAC layer protocol is based on a TDMA access mode to realize the functions of system synchronization, network management, multiple access, service data caching, splitting, cascading and submitting, and the network layer protocol realizes a routing function.

8. The system of claim 7, wherein the MAC layer includes an SDU buffering module, a PDU buffering module, a synchronization module, a network management module, a multiple access module, an SDU processing module, and a user management module;

9. An apparatus, characterized in that the apparatus comprises: the device comprises a data acquisition device, a processor and a memory;

the data acquisition device is used for acquiring data; the memory is to store one or more program instructions; the processor, configured to execute one or more program instructions to perform the method of any of claims 1-5.

10. A computer-readable storage medium having one or more program instructions embodied therein for performing the method of any of claims 1-5.