CN116170882A - Ad hoc network realization method of air-ground connection and interference system and related equipment thereof - Google Patents
Ad hoc network realization method of air-ground connection and interference system and related equipment thereof Download PDFInfo
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Abstract
The invention relates to the technical field of communication networking, and discloses an ad hoc network realization method of an air-ground connection and interference system and related equipment thereof, which are used for ensuring that all nodes mutually transmit and receive data under strict time sequence in wireless communication, avoiding the conflict of simultaneous transmission services of multiple nodes in the communication process and improving the channel utilization rate. The method comprises the following steps: receiving data to be processed from an upper layer data interface at any node of an ad hoc network, analyzing the data to be processed, and extracting information in a data packet and a control packet in the data to be processed; the method comprises the steps of processing information based on a MAC protocol of the TDMA and a frame structure design of the TDMA to obtain a target frame; and obtaining the transmission data quantity of a plurality of nodes in the ad hoc network, configuring the time sequence of each node according to the transmission data quantity, and controlling each node to transmit part or all of information in the target frame according to the corresponding time sequence.
Description
Technical Field
The invention relates to the technical field of communication networking, in particular to an ad hoc network implementation method of an air-to-ground connection and interference system and related equipment thereof.
Background
The construction of the air-ground combined interference environment comprises a plurality of air interference loads and a plurality of ground interference devices, a plurality of interference resources are required to be networked, and the interference to the target is implemented in a controlled state according to application requirements and planning and unified distribution and use. The wireless ad hoc network is connected in a wireless ad hoc network mode, the wireless ad hoc network does not depend on the existing fixed communication network infrastructure, multipath and time variation caused by the surrounding environment are two important influence factors of a communication system for complex electromagnetic environment application scenes, the multipath can cause wireless signals to suffer from frequency selective fading, the time variation causes corresponding time variation of channels, and in order to effectively solve the multipath and time variation, the wireless ad hoc network communication needs to develop a special physical layer communication algorithm so as to ensure the safety and reliability of wireless networking.
Disclosure of Invention
The invention provides an ad hoc network realization method of an air-ground connection and interference system and related equipment thereof, which are used for ensuring that all nodes mutually transmit and receive data under strict time sequence in wireless communication, avoiding the conflict of simultaneous transmission service of multiple nodes in the communication process and improving the channel utilization rate on the basis of solving the problem that the multiple nodes are fairly accessed into a shared channel.
In order to achieve the above object, a first aspect of the present invention provides a method for implementing an ad hoc network of an air-space coupling and interference system, including:
receiving data to be processed from an upper layer data interface at any node of an ad hoc network, analyzing the data to be processed, and extracting information in a data packet and a control packet in the data to be processed;
the method comprises the steps of processing information based on a MAC protocol of the TDMA and a frame structure design of the TDMA to obtain a target frame;
and obtaining the transmission data quantity of a plurality of nodes in the ad hoc network, configuring the time sequence of each node according to the transmission data quantity, and controlling each node to transmit part or all of information in the target frame according to the corresponding time sequence.
Optionally, the processing the information to obtain a target frame includes:
and carrying out any one or more of data segmentation, data aggregation, data decryption, ACK response, data recombination and data encryption on the information according to a preset sequence to obtain a target frame.
Optionally, the configuring the timing of each node according to the amount of the transmission data includes:
configuring the target frame into a structure consisting of a timeout frame, a time frame and a time slot;
and matching time slots according to the transmitted data quantity of each node, and configuring the time sequence of each node according to the time slots.
Optionally, before the controlling each node sends part or all of the information in the target frame according to the corresponding time sequence, the method further includes:
respectively sending a ranging frame to each node;
calculating the distance of each node according to the measuring and calculating data of the ranging frame;
and configuring the transmission delay of each node according to the distance so as to adjust the time sequence of each node.
Optionally, after the configuring the transmission delay of each node according to the distance, the method further includes:
and carrying out clock synchronization on each node according to the transmission delay.
Optionally, the method further comprises:
receiving a network access request of a new application node, analyzing a network access request frame of the network access request, and acquiring the MAC address, IP address information and network access request information of the network access request frame;
configuring a time slot based on a random access principle to send the network access request;
responding to the network access request according to the MAC address, the IP address information, the network access request information and the time slot of the network access request frame, and generating a network access response frame;
issuing the network access response frame in the time slot to allow the new application node to join the ad hoc network; and sending a broadcast frame to the nodes of the ad hoc network to broadcast the network access information of the new application node.
Optionally, the method further comprises:
receiving a network-quitting request frame of a node;
determining neighbor nodes of the network-quitting node according to the network-quitting request frame;
and deleting node information and time slot information of the corresponding network-quitting node in the neighbor node list.
The second aspect of the present invention provides an apparatus for implementing an ad hoc network of an air-space coupling and interference system, the apparatus comprising:
the receiving module is used for receiving the data to be processed from the upper layer data interface at any node of the ad hoc network, analyzing the data to be processed and extracting the information in the data packet and the control packet in the data to be processed;
the processing module is used for processing the information based on the MAC protocol of the TDMA and the frame structure design of the TDMA to obtain a target frame;
and the sending module is used for obtaining the sending data quantity of a plurality of nodes in the self-organizing network, configuring the time sequence of each node according to the sending data quantity, and controlling each node to send part or all of information in the target frame according to the corresponding time sequence.
Optionally, in another embodiment of the apparatus for implementing an ad hoc network of the air-to-ground connection and interference system, the processing module includes:
and the operation processing unit is used for carrying out any one or more of data segmentation, data aggregation, data decryption, ACK response, data recombination and data encryption on the information according to a preset sequence to obtain a target frame.
Optionally, in another embodiment of the apparatus for implementing an ad hoc network of an air-to-ground connection and interference system, the sending module further includes:
a time sequence configuration unit, configured to configure the target frame into a structure composed of a timeout frame, a time frame and a time slot; and matching time slots according to the transmitted data quantity of each node, and configuring the time sequence of each node according to the time slots.
Optionally, in another embodiment of the apparatus for implementing an ad hoc network of the air-to-ground connection and interference system, the apparatus further includes:
the time delay configuration unit is used for respectively sending ranging frames to each node; calculating the distance of each node according to the measuring and calculating data of the ranging frame; and configuring the transmission delay of each node according to the distance so as to adjust the time sequence of each node.
Optionally, in another embodiment of the apparatus for implementing an ad hoc network of the air-to-ground connection and interference system, the apparatus further includes:
and the clock synchronization unit is used for carrying out clock synchronization on each node according to the transmission delay.
Optionally, in another embodiment of the apparatus for implementing an ad hoc network of the air-to-ground connection and interference system, the apparatus further includes:
the node network access unit is used for receiving a network access request of a new application node and analyzing a network access request frame of the network access request to acquire the MAC address, the IP address information and the network access request information of the network access request frame;
configuring a time slot based on a random access principle to send the network access request;
responding to the network access request according to the MAC address, the IP address information, the network access request information and the time slot of the network access request frame, and generating a network access response frame;
issuing the network access response frame in the time slot to allow the new application node to join the ad hoc network; and sending a broadcast frame to the nodes of the ad hoc network to broadcast the network access information of the new application node.
Optionally, in another embodiment of the apparatus for implementing an ad hoc network of the air-to-ground connection and interference system, the apparatus further includes:
the node network-quitting unit is used for receiving a network-quitting request frame of the node;
determining neighbor nodes of the network-quitting node according to the network-quitting request frame;
and deleting node information and time slot information of the corresponding network-quitting node in the neighbor node list.
The invention also provides an ad hoc network implementation device of the space-time linkage and interference system, which is characterized by comprising a memory and at least one processor, wherein the memory stores instructions, and the memory and the at least one processor are interconnected through a circuit; the at least one processor invokes the instructions in the memory to cause the ad hoc network implementing device of the air-to-ground and interference system to perform the ad hoc network implementing method of the air-to-ground and interference system of any one of the above.
The fourth aspect of the present invention also provides a computer readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements a method for implementing an ad hoc network of an air-to-ground and interference system according to any one of the above.
In the technical scheme provided by the invention, in order to prevent the transmission time sequence and the continuous efficiency of wireless signals from being greatly influenced under the application scene of a space-time linkage and interference system in a complex electromagnetic environment, the invention provides an ad hoc network implementation scheme of the space-time linkage and interference system, which comprises the steps of firstly, receiving data to be processed from an upper layer data interface at any node of an ad hoc network, analyzing the data to be processed, and extracting information in a data packet and a control packet in the data to be processed; then, based on the MAC protocol of the TDMA and the frame structure design of the TDMA, processing the information to obtain a target frame; and obtaining the transmission data quantity of a plurality of nodes in the ad hoc network, configuring the time sequence of each node according to the transmission data quantity, and controlling each node to transmit part or all of information in the target frame according to the corresponding time sequence. By ensuring that all nodes mutually transmit and receive data under strict time sequence in wireless communication, the conflict of simultaneous transmission of services by multiple nodes in the communication process is avoided, the channel utilization rate is improved on the basis of solving the problem that multiple nodes fairly access a shared channel, the influence of factors such as electromagnetic environment, natural weather, communication distance and the like is reduced, and the safety and reliability of an air-ground connection and interference system are improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a process schematic diagram of an embodiment of an implementation method of an ad hoc network of a hollow ground connection and interference system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an embodiment of an apparatus for implementing an ad hoc network of a hollow earth and interference system in accordance with an embodiment of the present invention;
fig. 3 is a schematic diagram of an embodiment of an ad hoc network implementing apparatus of a hollow ground coupling and interference system according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides an ad hoc network realization method of an air-to-ground connection and interference system and related equipment thereof, which are used for improving the isolation between links of the air-to-ground connection and interference system and ensuring that each link works independently and stably, thereby optimizing a communication compatibility scheme and ensuring the requirement of reliable communication.
In order to enable those skilled in the art to better understand the present invention, embodiments of the present invention will be described below with reference to the accompanying drawings.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
The air-ground combined interference environment is constructed and comprises a plurality of air interference loads and a plurality of ground interference devices, a plurality of interference resources are required to be networked, the air-ground combined networking is interconnected in a wireless ad hoc mode, the wireless ad hoc network does not depend on the existing fixed communication network infrastructure, and wireless signals can suffer from frequency fading and time sequence influence for complex electromagnetic environment application scenes. In the invention, the wireless ad hoc network does not depend on the existing fixed communication network infrastructure, has the characteristics of flexible change of the topology structure and strong destruction resistance, and combines the requirements of rapid expansion, flexible networking, strong destruction resistance, good mobility, no time space limitation and the like of the communication network. The application provides an ad hoc network realization method of an air-ground connection and interference system and related equipment thereof, which are used for ensuring that all nodes mutually transmit and receive data under strict time sequence in wireless communication, avoiding conflict generated by simultaneous transmission service of multiple nodes in the communication process, and improving the channel utilization rate on the basis of solving the problem that the multiple nodes are fairly accessed into a shared channel.
Referring to fig. 1, an embodiment of a method for implementing an ad hoc network of a hollow ground coupling and interference system according to an embodiment of the present invention includes:
And 102, processing the information to obtain a target frame based on a MAC protocol of the TDMA and a frame structure design of the TDMA.
The air-ground combined interference system needs to use a wireless ad hoc network communication system to complete networking between an air-ground jammer and a pilot control center, and the primary work of researching and developing the wireless ad hoc network communication system is to deeply understand and research the characteristics of a wireless channel and possible risks. Wireless networking does not depend on infrastructure, has obvious advantages in flexibility, expandability and economy, is easily influenced by electromagnetic environment, natural weather, communication distance and other factors, and faces a certain risk in safety and reliability. Therefore, in order to solve the problem that each node of the air-ground combined interference system generates service conflict in the communication process, the self-networking implementation scheme of the air-ground combined interference system aims at improving the safety and reliability of the air-ground combined interference system and reducing the influence of factors such as electromagnetic environment, natural weather, communication distance and the like, so that the communication networking scheme of the air-ground combined interference system is optimized, and the channel utilization rate is improved on the basis of solving the problem that multiple nodes are fairly accessed into a shared channel. In one embodiment of the invention, the ad hoc network employs a typical multi-user distributed network, which has no center in the network and is independent of infrastructure, with obvious advantages in terms of flexibility, scalability and economy. The MAC layer of the ad hoc network communication link adopts a time division multiple access protocol (TDMA), so that each node in the space-time link and interference system can operate in a distributed mode in wireless communication, and data receiving and transmitting are mutually carried out under a strict time sequence, so that the conflict of simultaneous transmission business of multiple nodes in the communication process is avoided.
Each node in the air-ground coupling and interference system is configured with a MAC module, and the main function of the module is to implement an algorithm of a MAC protocol.
In the implementation, for any node in the ad hoc network, the data to be processed from the upper layer data interface can be received, that is, when external data is received through the upper layer data interface, the external data needs to be sent out through the ad hoc network, the received external data is defined as the data to be processed, then the data to be processed is analyzed, and information in a data packet and a control packet in the data to be processed is extracted.
Specifically, after extracting information in a data packet and a control packet in the data to be processed, the information is processed based on a TDMA MAC protocol and a TDMA frame structure design, so as to obtain a target frame, where TDMA is a TDMA protocol, and the MAC protocol in the present invention is designed and improved based on TDMA (time division multiple access protocol), where the TDMA frame structure design is a basis of the protocol design, and in one embodiment, the TDMA frame structure is divided into multiple levels of frame formats, such as three levels of frame formats, that is, each level of frame includes a next level of frame, and then the highest level of frame forms the data to be processed. In a specific implementation, when the information is processed, the information can be processed sequentially in a multi-stage frame mode, the information is decomposed and then sequentially processed according to gaps of the multi-stage frame, and a target frame is obtained, wherein the target frame contains data carried by each gap.
And processing the information to obtain a target frame, wherein the target frame comprises data carried in each time interval, acquiring the transmission data quantity of a plurality of nodes in the ad hoc network, accessing a plurality of distributed nodes in the ad hoc network, distributing tasks for transmitting the data to each node capable of participating in data transmission in order to improve the utilization rate of a channel, then transmitting the target frame by the nodes according to a strict sequence so that the received data to be processed can be transmitted after being processed, and when the method is implemented, acquiring the transmission data quantity of a plurality of nodes in the ad hoc network, namely the data quantity capable of being transmitted by each node, configuring the time sequence of each node according to the transmission data quantity, controlling each node to transmit part or all of information in the target frame according to the corresponding time sequence, namely transmitting the information of the distributed target frame after distributing the time sequence, and rapidly transmitting the data under the condition of limited channel capacity.
Further, the process of processing the information to obtain the target frame includes: and carrying out any one or more of data segmentation, data aggregation, data decryption, ACK response, data recombination and data encryption on the information according to a preset sequence to obtain a target frame.
In specific implementation, when the information is processed, firstly, data segmentation is carried out on the information, the ultralong information is divided into a plurality of data segments, before the segmentation, if the data is encrypted, the data is decrypted to obtain the correct data segments, if the information contains the information needing to be responded, the information needing to be responded is responded, including adding corresponding ACK response data, then, data aggregation is carried out, the decomposed data is added with other information and then is aggregated, then, data recombination and data encryption are carried out, and a target frame is obtained, wherein the target frame contains the born actual data, a frame header, a load, an ACK response field, a check field such as CRC16 and the like.
In specific implementation, in different situations, the information processing modes/flows are different, which can include any one or more of data segmentation, data aggregation, data decryption, ACK response, data recombination and data encryption, and can also adjust the processing sequence of the data segmentation, data aggregation, data decryption, ACK response, data recombination and data encryption.
Further, the present invention is a method for configuring the timing of each of the nodes according to the transmission data amount, comprising: configuring the target frame into a structure consisting of a timeout frame, a time frame and a time slot; and matching time slots according to the transmitted data quantity of each node, and configuring the time sequence of each node according to the time slots.
In a specific embodiment, in the MAC protocol based on the TDMA design, the TDMA Frame structure is divided into three levels of Frame formats, i.e., a time Slot (Slot), a time Frame (Frame) and a super Frame (Supframe), that is, the target Frame is configured into a structure consisting of a timeout Frame, a time Frame and a time Slot; further, in order to improve the transmission efficiency, the concepts of time slots and micro time slots are proposed, wherein the micro time slots mainly transmit short frames, which can be defined as the time required for transmitting the shortest frames, time slot T slot Minislot T uslot Is in units of a multiple of 100 us; a time frame comprises a plurality of time slots/micro time slots, the time frame structure consists of fixedly allocated micro time slots and randomly scheduled time slots, and each node is fixedly allocated with one micro time slot for transmitting short message service; randomly scheduling time slots can be applied for use by nodes with related QoS service requirements, such as video transmission, micro time slots and time in one time frameThe ratio of the total time length of slots is about 1:2, for example, the length of a micro time slot of an ad hoc network communication link can be configured to be 0.5/1/2ms, the length of a time slot is 2 times of that of the micro time slot, the time frame length and the time slot/micro time slot composition ratio can be configured and modified according to the actual conditions such as network capacity, etc., a plurality of time frames form a super frame, wherein the first time frame can be used as a network control time frame for controlling the network, such as network bulletin, time slot distribution notice, network access request, service request, etc., the selection of the number of time frames in the super frame is mainly determined by the time of network management, or the frequency of dynamic change of network topology, and the maximum waiting time of network access of a new node, in order to be able to respond within a super frame at the latest after the new node is started, the length T of the super frame supframe Designed to not exceed 600ms. The first time frame of the super frame is taken as a network control time frame, the network control time frame adopts a micro time slot structure, the time frame structure is shown in a drawing, and the network control micro time slot consists of a fixed allocation micro time slot and a competition micro time slot; fixed minislots: each node is fixedly allocated with a micro time slot for transmitting each node broadcasting frame, and the broadcasting frame is mainly used for clock synchronization, time slot structure broadcasting, network parameter broadcasting, neighbor node perception management and the like; competing minislots: for sending a network access request to a node not accessing the network.
Since the target frame is configured as a structure consisting of a timeout frame, a time frame and a time slot; and matching time slots according to the transmission data quantity of each node, namely configuring the node which transmits the data corresponding to the time slots in each time slot, and configuring the time sequence of each node according to the time slots to form a time sequence for transmitting the data. And each node is ensured to mutually transmit and receive data under strict time sequence in the wireless communication, so that the conflict of the simultaneous transmission service of multiple nodes in the communication process is avoided, and the channel utilization rate is improved on the basis of solving the problem that the multiple nodes are fairly accessed to a shared channel.
Further, in another embodiment of the method for implementing an ad hoc network of an air-to-ground connection and interference system of the present invention, before controlling each node to send part or all of the information in the target frame according to the corresponding time sequence, the method further includes:
respectively sending a ranging frame to each node;
calculating the distance of each node according to the measuring and calculating data of the ranging frame;
and configuring the transmission delay of each node according to the distance so as to adjust the time sequence of each node.
In practical implementation, the distances between nodes need to be measured due to different distances between nodes. Assuming that node B is 30 km from node a and node C is 3 km from node a, then the transmission delays of the radio waves are 100us and 10us, respectively, and in order for node a to begin receiving data at the beginning of the slot, node B, C must adjust the transmission time to transmit data 100us or 10us ahead of the beginning of the slot. The method comprises the steps of adopting a mode of interactively transmitting a ranging frame between two nodes and measuring time delay differentially to obtain measuring and calculating data of the ranging frame, calculating the distance of each node according to the measuring and calculating data of the ranging frame, configuring the transmission time delay of each node according to the distance to adjust the time sequence of each node, enabling each node to configure the corresponding transmission time delay so that data receiving and transmitting of each node are more orderly, and ensuring that each node mutually receives and transmits data under strict time sequence in wireless communication.
Further, in another embodiment of the method for implementing the ad hoc network of the air-to-ground connection and interference system of the present invention, after configuring the transmission delay of each node according to the distance, the method further includes:
and carrying out clock synchronization on each node according to the transmission delay.
In the implementation, after the transmission time delay of the node is calculated, clock synchronization is performed on each node according to the transmission time delay, and the clock synchronization is to adopt a master-slave synchronization mode. In one embodiment, after the node started first does not sense the clock synchronization information in the corresponding time, the node is taken as a zero-order clock node (temporary synchronization master node) and periodically broadcasts the synchronization information. The synchronization information comprises a time slot starting time and a time difference intvlTime between the time slot starting time and the time slot starting time when the synchronization information is sent, the last startup node performs time synchronization to the temporary master node started first, when the synchronization information is received for the first time, coarse synchronization is performed, only the intvlTime in the synchronization information is taken, the time length of a superframe is subtracted by (intvltime+D) to obtain a waiting time waitTime, D is a transmission delay, the node obtains the startTime of the node after waiting for the waitTime, when the node receives the synchronization information again and performs local clock synchronization, the timestamp startTime in the synchronization information is taken out, the timestamp is added with a timestamp correction value theta, theta is the clock deviation among the nodes, and then the correction clock TS1 = TS + theta is used as the time value of the clock of the local node.
Further, in another embodiment of the method for implementing the ad hoc network of the air-to-ground connection and interference system of the present invention, the method further includes:
receiving a network access request of a new application node, analyzing a network access request frame of the network access request, and acquiring the MAC address, IP address information and network access request information of the network access request frame;
configuring a time slot based on a random access principle to send the network access request;
responding to the network access request according to the MAC address, the IP address information, the network access request information and the time slot of the network access request frame, and generating a network access response frame;
issuing the network access response frame in the time slot to allow the new application node to join the ad hoc network;
and sending a broadcast frame to the nodes of the ad hoc network to broadcast the network access information of the new application node.
When a new node is accessed to an ad hoc network, a network access request of the new application node is received, a network access request frame of the network access request is analyzed, the network access request frame is used for applying for network access to the network after the new node is started, the network access request frame is sent in a network control contention micro time slot and comprises MAC address IP address information, network access request information and the like of the node, then the MAC address, the IP address information and the network access request information of the network access request frame are obtained, a time slot is configured based on a random access principle to send the network access request, and the node randomly selects one micro time slot to send the network access request on the assumption that N contention micro time slots exist, so that collision caused by sending request frames by a plurality of nodes is reduced, and further, the request information in the network access request frame can also carry information such as node identity level, secret key and the like.
Further, the network access request is responded according to the MAC address, the IP address information, the network access request information and the time slot of the network access request frame, a network access response frame is generated, the network access response frame is used for responding to a new network access application node, the new node is allowed to join the network, in order to quickly respond to the request information, the network access response frame can be issued in a data micro time slot/time slot corresponding to the node, that is, the network access response frame is issued in the time slot, so that the new application node is allowed to join the ad hoc network, wherein the response information comprises response node information, a request result, time slot allowed to be used, relevant response information and the like, and finally, a broadcast frame is sent to the node of the ad hoc network to broadcast the network access information of the new application node, and the network access information of the new application node of other nodes in the ad hoc network is notified.
Further, in another embodiment of the method for implementing the ad hoc network of the air-to-ground connection and interference system of the present invention, the method further includes:
receiving a network-quitting request frame of a node;
determining neighbor nodes of the network-quitting node according to the network-quitting request frame;
and deleting node information and time slot information of the corresponding network-quitting node in the neighbor node list.
When the ad hoc network has a node to exit, the ad hoc network can send a network exit request frame to inform the neighbor node that the neighbor node is about to get off the network, namely, the network exit request frame of the receiving node is sent, then the neighbor node of the network exit node is determined according to the network exit request frame, after the neighbor node receives the network exit request frame of the node, the neighbor node does not need to reply, and node information and time slot information of the corresponding network exit node in the neighbor node list are deleted. Further, if the node does not receive the broadcast frame of the neighbor node within the preset active time, the neighbor node is considered to be already in the network-quitting state, and the neighbor node information and the occupied time slot information are deleted at the moment, so that the timely response of the node in the ad hoc network to the network-quitting state is improved, and the safety and reliability of the space-space connection and interference system are improved.
In summary, in the embodiment of the present invention, in order to prevent the transmission timing sequence and the continuous efficiency of the wireless signal from being greatly affected in the application scenario of the air-to-ground connection and the interference system in the complex electromagnetic environment, an ad hoc network implementation scheme of the air-to-ground connection and the interference system is provided, firstly, to receive the data to be processed from the upper layer data interface at any node of the ad hoc network, parse the data to be processed, and extract the information in the data packet and the control packet in the data to be processed; then, based on the MAC protocol of the TDMA and the frame structure design of the TDMA, processing the information to obtain a target frame; and obtaining the transmission data quantity of a plurality of nodes in the ad hoc network, configuring the time sequence of each node according to the transmission data quantity, and controlling each node to transmit part or all of information in the target frame according to the corresponding time sequence. By ensuring that all nodes mutually transmit and receive data under strict time sequence in wireless communication, the conflict of simultaneous transmission of services by multiple nodes in the communication process is avoided, the channel utilization rate is improved on the basis of solving the problem that multiple nodes fairly access a shared channel, the influence of factors such as electromagnetic environment, natural weather, communication distance and the like is reduced, and the safety and reliability of an air-ground connection and interference system are improved.
The method for implementing the ad hoc network of the hollow ground connection and interference system according to the embodiment of the present invention is described above, and the device for implementing the ad hoc network of the hollow ground connection and interference system according to the embodiment of the present invention is described below, referring to fig. 2, an embodiment of the device for implementing the ad hoc network of the hollow ground connection and interference system according to the embodiment of the present invention includes:
the receiving module 11 is configured to receive data to be processed from an upper layer data interface at any node of the ad hoc network, parse the data to be processed, and extract information in a data packet and a control packet in the data to be processed;
the processing module 12 is configured to process the information based on a MAC protocol of TDMA and a frame structure design of TDMA to obtain a target frame;
and the sending module 13 is used for obtaining the sending data quantity of a plurality of nodes in the ad hoc network, configuring the time sequence of each node according to the sending data quantity, and controlling each node to send part or all of information in the target frame according to the corresponding time sequence.
Optionally, in another embodiment of the apparatus for implementing an ad hoc network of the air-to-ground connection and interference system, the processing module includes:
and the operation processing unit is used for carrying out any one or more of data segmentation, data aggregation, data decryption, ACK response, data recombination and data encryption on the information according to a preset sequence to obtain a target frame.
Optionally, in another embodiment of the apparatus for implementing an ad hoc network of an air-to-ground connection and interference system, the sending module further includes:
a time sequence configuration unit, configured to configure the target frame into a structure composed of a timeout frame, a time frame and a time slot; and matching time slots according to the transmitted data quantity of each node, and configuring the time sequence of each node according to the time slots.
Optionally, in another embodiment of the apparatus for implementing an ad hoc network of the air-to-ground connection and interference system, the apparatus further includes:
the time delay configuration unit is used for respectively sending ranging frames to each node; calculating the distance of each node according to the measuring and calculating data of the ranging frame; and configuring the transmission delay of each node according to the distance so as to adjust the time sequence of each node.
Optionally, in another embodiment of the apparatus for implementing an ad hoc network of the air-to-ground connection and interference system, the apparatus further includes:
and the clock synchronization unit is used for carrying out clock synchronization on each node according to the transmission delay.
Optionally, in another embodiment of the apparatus for implementing an ad hoc network of the air-to-ground connection and interference system, the apparatus further includes:
the node network access unit is used for receiving a network access request of a new application node and analyzing a network access request frame of the network access request to acquire the MAC address, the IP address information and the network access request information of the network access request frame;
configuring a time slot based on a random access principle to send the network access request;
responding to the network access request according to the MAC address, the IP address information, the network access request information and the time slot of the network access request frame, and generating a network access response frame;
issuing the network access response frame in the time slot to allow the new application node to join the ad hoc network;
and sending a broadcast frame to the nodes of the ad hoc network to broadcast the network access information of the new application node.
Optionally, in another embodiment of the apparatus for implementing an ad hoc network of the air-to-ground connection and interference system, the apparatus further includes:
the node network-quitting unit is used for receiving a network-quitting request frame of the node;
determining neighbor nodes of the network-quitting node according to the network-quitting request frame;
and deleting node information and time slot information of the corresponding network-quitting node in the neighbor node list.
It should be noted that, the apparatus in the embodiment of the present invention may be used to implement all the technical solutions in the foregoing method embodiment, and the functions of each functional module may be specifically implemented according to the method in the foregoing method embodiment, and the specific implementation process may refer to the relevant description in the foregoing example, which is not repeated herein. The above fig. 2 describes the ad hoc network implementing apparatus of the air-to-ground coupling and interference system in the embodiment of the present invention in detail from the point of view of modularized functional entities, and the following describes the ad hoc network implementing apparatus of the air-to-ground coupling and interference system in the embodiment of the present invention in detail from the point of view of hardware processing.
Fig. 3 is a schematic structural diagram of an ad hoc network implementing apparatus of an air-to-ground and interference system according to an embodiment of the present invention, where the ad hoc network implementing apparatus 300 of the air-to-ground and interference system may have relatively large differences due to different configurations or performances, and may include one or more processors (central processing units, CPU) 301 (e.g., one or more processors) and a memory 309, and one or more storage mediums 308 (e.g., one or more mass storage devices) storing applications 307 or data 306. Wherein the memory 309 and storage medium 308 may be transitory or persistent storage. The program stored on the storage medium 308 may include one or more modules (not shown), each of which may include a series of instruction operations in a boolean variable store for graph computation. Still further, the processor 301 may be configured to communicate with the storage medium 308 to execute a series of instruction operations in the storage medium 308 on the ad hoc network implementing apparatus 300 of the air-to-ground and interfering system.
The ad hoc network implementing device 300 of the air-to-ground and interference system may also include one or more power supplies 302, one or more wired or wireless network interfaces 303, one or more input-output interfaces 304, and/or one or more operating systems 305, such as Windows Serve, mac OS X, unix, linux, freeBSD, and the like. Those skilled in the art will appreciate that the ad hoc network implementing apparatus structure of the air-to-ground and interference system shown in fig. 3 does not constitute a limitation of the ad hoc network implementing apparatus of the air-to-ground and interference system, and may include more or fewer components than shown, or may combine certain components, or may be a different arrangement of components.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the several embodiments provided in the present invention, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium, which may be non-volatile or volatile. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An implementation method of an ad hoc network of an air-space coupling and interference system, which is characterized by comprising the following steps:
receiving data to be processed from an upper layer data interface at any node of an ad hoc network, analyzing the data to be processed, and extracting information in a data packet and a control packet in the data to be processed;
the method comprises the steps of processing information based on a MAC protocol of the TDMA and a frame structure design of the TDMA to obtain a target frame;
and obtaining the transmission data quantity of a plurality of nodes in the ad hoc network, configuring the time sequence of each node according to the transmission data quantity, and controlling each node to transmit part or all of information in the target frame according to the corresponding time sequence.
2. The method for implementing the ad hoc network of the air-to-ground connection and interference system according to claim 1, wherein said processing the information to obtain the target frame comprises:
and carrying out any one or more of data segmentation, data aggregation, data decryption, ACK response, data recombination and data encryption on the information according to a preset sequence to obtain a target frame.
3. The method for implementing an ad hoc network of an air-to-ground and interference system according to claim 1, wherein said configuring the timing of each of said nodes according to said amount of transmission data comprises:
configuring the target frame into a structure consisting of a timeout frame, a time frame and a time slot;
and matching time slots according to the transmitted data quantity of each node, and configuring the time sequence of each node according to the time slots.
4. The method for implementing an ad hoc network of an air-to-ground connection and interference system according to claim 1, wherein before said controlling each node to transmit part or all of the information in the target frame according to the corresponding timing sequence, the method further comprises:
respectively sending a ranging frame to each node;
calculating the distance of each node according to the measuring and calculating data of the ranging frame;
and configuring the transmission delay of each node according to the distance so as to adjust the time sequence of each node.
5. The method for implementing the ad hoc network of the air-to-ground connection and interference system according to claim 1, wherein after said configuring the transmission delay of each node according to the distance, the method further comprises:
and carrying out clock synchronization on each node according to the transmission delay.
6. The method for implementing an ad hoc network of an air-to-ground and interference system according to claim 1, further comprising:
receiving a network access request of a new application node, analyzing a network access request frame of the network access request, and acquiring the MAC address, IP address information and network access request information of the network access request frame;
configuring a time slot based on a random access principle to send the network access request;
responding to the network access request according to the MAC address, the IP address information, the network access request information and the time slot of the network access request frame, and generating a network access response frame;
issuing the network access response frame in the time slot to allow the new application node to join the ad hoc network;
and sending a broadcast frame to the nodes of the ad hoc network to broadcast the network access information of the new application node.
7. The method for implementing an ad hoc network of an air-to-ground and interference system according to claim 1, further comprising:
receiving a network-quitting request frame of a node;
determining neighbor nodes of the network-quitting node according to the network-quitting request frame;
and deleting node information and time slot information of the corresponding network-quitting node in the neighbor node list.
8. An apparatus for implementing an ad hoc network of an air-space networking and interference system, the apparatus comprising:
the receiving module is used for receiving the data to be processed from the upper layer data interface at any node of the ad hoc network, analyzing the data to be processed and extracting the information in the data packet and the control packet in the data to be processed;
the processing module is used for processing the information based on the MAC protocol of the TDMA and the frame structure design of the TDMA to obtain a target frame;
and the sending module is used for obtaining the sending data quantity of a plurality of nodes in the self-organizing network, configuring the time sequence of each node according to the sending data quantity, and controlling each node to send part or all of information in the target frame according to the corresponding time sequence.
9. The device for realizing the self-networking of the air-space networking and interference system is characterized by comprising a memory and at least one processor, wherein the memory is stored with instructions, and the memory and the at least one processor are interconnected through a circuit; the at least one processor invokes the instructions in the memory to cause the ad hoc network implementing apparatus of the air-to-ground and interference system to perform the ad hoc network implementing method of the air-to-ground and interference system of any one of claims 1-7.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements an ad hoc network implementation method of a space-time and interference system according to any of the claims 1-7.
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| CN117528601A (en) * | 2024-01-05 | 2024-02-06 | 深圳市烽云技术有限公司 | Wireless ad hoc network communication method and device |
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| CN117528601A (en) * | 2024-01-05 | 2024-02-06 | 深圳市烽云技术有限公司 | Wireless ad hoc network communication method and device |
| CN117528601B (en) * | 2024-01-05 | 2024-03-26 | 深圳市烽云技术有限公司 | Wireless ad hoc network communication method and device |
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