CN109379283B - Ad hoc network communication method and device based on heterogeneous equipment of Internet of things and ad hoc network - Google Patents
Ad hoc network communication method and device based on heterogeneous equipment of Internet of things and ad hoc network Download PDFInfo
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- CN109379283B CN109379283B CN201811507712.7A CN201811507712A CN109379283B CN 109379283 B CN109379283 B CN 109379283B CN 201811507712 A CN201811507712 A CN 201811507712A CN 109379283 B CN109379283 B CN 109379283B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/20—Hop count for routing purposes, e.g. TTL
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/16—Threshold monitoring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
- H04L45/745—Address table lookup; Address filtering
Abstract
The invention discloses an ad hoc network communication method, an ad hoc network communication device and an ad hoc network based on heterogeneous equipment of the Internet of things, wherein the method comprises the following steps: receiving message data transmitted by a previous hop node; wherein, the message data includes: data content, source node IP, target node IP, forwarding node IP of the previous hop node, routing hop count and node performance in the ad hoc network; according to the IP of the target node, whether an effective route capable of reaching the target node exists in a routing table of the routing table is searched; if yes, updating the message data, and sending the updated message data according to the effective route and the node performance of the current node; if not, starting a route discovery process, updating message data after finding an available route, and sending the message data according to the node performance of the current node. The invention can automatically recover the communication of the ad hoc network after a certain node fails, and can balance the data calculation workload of each node according to the node performance.
Description
Technical Field
The invention relates to the field of communication, in particular to an ad hoc network communication method and device based on internet of things heterogeneous equipment and an ad hoc network.
Background
At present, various physical network communication protocols such as MQTT and the like exist, and each protocol has a certain application scene. For example, LoRa, NB-IoT, Zigbee and bluetooth mainly solve the problem of internet of things and network access, and basically belong to a data link layer protocol from the viewpoint of network protocol layering. For data exchange of the internet of things, the data exchange is mainly solved by depending on an application layer protocol. For example, Message Queuing Telemetry Transport (MQTT) is a protocol designed for a large number of sensors or controllers with limited computing power, limited operating bandwidth, and unreliable network environment.
For heterogeneous devices of an ad hoc network, the problems that device nodes are unstable and the routing state changes with time exist. Meanwhile, the performance of each device is inconsistent, the distance is changed, and the factors can influence the communication stability of the ad hoc network to a certain extent.
Disclosure of Invention
In view of this, the present invention aims to provide an ad hoc network communication method, an ad hoc network communication device and an ad hoc network based on heterogeneous devices of the internet of things, which can solve the problem that a general protocol cannot guarantee node stability and performance difference.
The embodiment of the invention provides an ad hoc network communication method based on heterogeneous equipment of the Internet of things, which comprises the following steps:
for each current node in the ad hoc network:
receiving message data transmitted by a previous hop node and carrying out operation processing on the message data; wherein the message data includes: data content, a source node IP, a target node IP, a forwarding node IP of a previous hop node, a routing hop count from the source node to a current node and node performance of each node in the ad hoc network; when the data content in the message data is operated, part of operation tasks are sent to peripheral nodes in an idle state; the peripheral nodes are other nodes in a communication range; receiving data returned after peripheral node operation, and generating message data to be transmitted according to the data obtained by the operation of the peripheral node and the data returned by the peripheral node;
according to the target node IP, whether an effective route capable of reaching the target node corresponding to the target node IP exists in a routing table of the routing table is searched;
if yes, updating the message data, and sending the updated message data according to the effective route and the node performance of the current node; in the updated message data, the IP of the forwarding node is updated to the IP of the current node, and the route hop number is added by 1;
if not, starting a route discovery process, updating message data after finding an available route, and sending the message data according to the node performance of the current node; and in the updated message data, the IP of the forwarding node is updated to the IP of the current node, and the route hop number is added by 1.
Preferably, the node performance of each node is evaluated by a benchmark method; during evaluation, a section of test program is operated in each node, and the execution time of each node for executing the test program is obtained to determine the performance of the equipment, so that the performance of the nodes is graded; after the nodes are graded in performance grade, the transmission speed of the message data is dynamically controlled through the performance grade, so that each node can correctly receive and process the data.
Preferably, the method further comprises the following steps:
periodically broadcasting a heartbeat detection message to inform the position of a peripheral node; and
and receiving heartbeat detection messages sent by other nodes to determine whether the nodes exist or leave the communication range.
Preferably, the method further comprises the following steps:
establishing a reverse route based on the forwarding node IP; the reverse route is a route from the current node to the source node.
Preferably, the method further comprises the following steps:
when judging that a plurality of paths from the current node to the target node exist, acquiring the data volume of the data content of the message data;
when the data volume is smaller than a preset threshold value, selecting the shortest path as a transmission path of the message data;
and when the data volume is greater than a preset threshold value and the calculation volume requirement is greater than a preset requirement, acquiring a path with better node performance in the plurality of paths as a transmission path of the message data.
Preferably, the task size of the partial computation task is determined by the node performance of the peripheral node.
Preferably, the message data further includes a protocol number and a check.
The embodiment of the invention also provides an ad hoc network communication device based on the internet of things heterogeneous equipment, which comprises:
the receiving unit is used for receiving the message data transmitted by the previous hop node and carrying out operation processing on the message data; wherein the message data includes: data content, a source node IP, a target node IP, a forwarding node IP of a previous hop node, a routing hop count from the source node to a current node and node performance of each node in the ad hoc network; when the data content in the message data is operated, part of operation tasks are sent to peripheral nodes in an idle state; the peripheral nodes are other nodes in a communication range; receiving data returned after peripheral node operation, and generating message data to be transmitted according to the data obtained by the operation of the peripheral node and the data returned by the peripheral node;
the route searching unit is used for searching whether an effective route which can reach a target node corresponding to a target node IP exists in a route table of the route searching unit according to the target node IP; if yes, updating the message data, and sending the updated message data according to the effective route and the node performance of the current node; in the updated message data, the IP of the forwarding node is updated to the IP of the current node, and the route hop number is added by 1; if not, starting a route discovery process, updating message data after finding an available route, and sending the message data according to the node performance of the current node; and in the updated message data, the IP of the forwarding node is updated to the IP of the current node, and the route hop number is added by 1.
The embodiment of the invention also provides an ad hoc network, which comprises a plurality of nodes; each node has a preset communication range and can send message data to other nodes in the communication range of the node;
each node comprises a processor and a memory, wherein the memory stores executable codes, and the executable codes can be executed by the processor to realize the ad hoc network communication method based on the internet of things heterogeneous equipment.
In this embodiment, by adding the forwarding node IP, the routing hop count, and the node performance to the packet data, it is possible to complete transmission and sharing of the packet data in the ad hoc network more quickly, so that the ad hoc network can automatically recover communication after a certain node fails, and meanwhile, the data calculation workload of each device can be balanced according to the node performance, thereby achieving the effect of improving the overall operation stability, speed, and efficiency of the ad hoc network.
Drawings
Fig. 1 is a schematic flowchart of an ad hoc network communication method based on heterogeneous devices of the internet of things according to an embodiment of the present invention;
FIG. 2 is an architecture diagram of an ad hoc network provided by an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an ad hoc network communication device based on heterogeneous devices of the internet of things according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1, an embodiment of the present invention provides an ad hoc network communication method based on heterogeneous devices of the internet of things, including:
for each current node in the ad hoc network:
s101, receiving message data transmitted by a previous hop node and carrying out operation processing on the message data; wherein the message data includes: data content, a source node IP, a target node IP, a forwarding node IP of a previous hop node, a routing hop count from the source node to a current node and node performance of each node in the ad hoc network; when the data content in the message data is operated, part of operation tasks are sent to peripheral nodes in an idle state; the peripheral nodes are other nodes in a communication range; and receiving data returned after the peripheral node is operated, and generating message data to be transmitted according to the data obtained by the operation of the peripheral node and the data returned by the peripheral node.
S102, searching whether an effective route capable of reaching a target node corresponding to a target node IP exists in a routing table of the routing table according to the target node IP; if yes, executing step S103, otherwise executing step S104;
s103, updating the message data, and sending the updated message data according to the effective route and the node performance of the current node; and in the updated message data, the IP of the forwarding node is updated to the IP of the current node, and the route hop number is added by 1.
S104, starting a route discovery process, updating message data after finding an available route, and sending the message data according to the node performance of the current node; and in the updated message data, the IP of the forwarding node is updated to the IP of the current node, and the route hop number is added by 1.
Generally, each message data sent by a complete communication protocol at least comprises three basic fields of a protocol number, data content and verification. The protocol number is used to uniquely identify a protocol, similar to the ID of the protocol. The data content can be composed of a plurality of small fields, the rules of the small fields are agreed by the sender, the sender packs the parts according to the agreement, and the receiver analyzes according to the agreement. The check field is used for avoiding errors in the process of data transmission in a physical link, and a section of check field generated by a certain algorithm on all the previous data is sent to the receiving party by the sending party.
In order to ensure the optimal device performance and the automatic network communication switching problem of the whole ad hoc network communication, the embodiment adds three parameters, namely forwarding node IP, routing hop count and node performance, to the existing message communication protocol. The node in the message data refers to a specific device in the internet of things.
Wherein:
forwarding node IP: and in the message data transmission process, the IP address of the intermediate forwarding equipment. In the process of routing request transmission, the message data is forwarded in the ad hoc network, and in the process of forwarding, each node receiving the message data establishes a reverse route, namely a route from the current node to the source node. If the message data can reach the node from the source node, it indicates that the message data sent by the node can also reach the source node, and it is necessary to know which next hop node to reach the source node should be to establish a route to reach the source node, i.e., a node forwarding the message data by the previous hop. Therefore, in order to efficiently establish a reverse route, the forwarding node IP needs to be added. Before forwarding the message data to the next node, the current node should update the field to its own IP, and then forward the message data.
Routing hop count: and the method is used for counting the forwarding times of the segment of message data in the whole ad hoc network system. When a forwarding node establishes a reverse route, the forwarding node needs to store the route hop number, and at the same time, each time a route request message is forwarded, one field needs to be added to increase one hop.
The node performance is as follows: device node performance evaluation values. Wherein the node performance of each node can be evaluated by a benchmark method; during evaluation, a section of test program is operated in each node, and the execution time of each node for executing the test program is obtained to determine the performance of the equipment, so that the performance of the nodes is graded; after the nodes are graded in performance grade, the transmission speed of the message data is dynamically controlled through the performance grade, so that each node can correctly receive and process the data. Of course, it should be noted that the node performance of each node may also be obtained through testing by other algorithms or methods, and the present invention is not limited in particular.
Preferably, the method further comprises the following steps:
periodically broadcasting a heartbeat detection message to inform the position of a peripheral node; and
and receiving heartbeat detection messages sent by other nodes to determine whether the nodes exist or leave the communication range.
In this embodiment, each node further employs a heartbeat-based detection mechanism. Each node informs the position of the peripheral node by periodically broadcasting a simple heartbeat detection message (such as I am here), and simultaneously receives simple messages of other peripheral equipment. In this way it is determined whether a node is present or out of communication range.
Preferably, the method further comprises the following steps:
when judging that a plurality of paths from the current node to the target node exist, acquiring the data volume of the data content of the message data;
when the data volume is smaller than a preset threshold value, selecting the shortest path as a transmission path of the message data;
and when the data volume is greater than a preset threshold value and the calculation volume requirement is greater than a preset requirement, acquiring a path with better node performance in the plurality of paths as a transmission path of the message data.
Preferably, the method further comprises the following steps:
when the data content in the message data is operated, part of operation tasks are sent to peripheral nodes in an idle state; the peripheral nodes are other nodes in a communication range;
and receiving data returned after the peripheral node is operated, and generating message data to be transmitted according to the data obtained by the operation of the peripheral node and the data returned by the peripheral node.
The task size of the partial computation task is determined by the node performance of the peripheral nodes, and the better the node performance of the peripheral nodes is, more task sizes can be delivered to the peripheral nodes for processing, so that the transmission and processing speed of the message data is integrally improved.
For the understanding of the present invention, the following describes the message data transmission process of the present invention as a practical example.
As shown in FIG. 2, assume that the current node is node A and the target node is node C. The normal procedure for communication between node a and node C would be node a-node B-node-C. Due to the failure of the node B in the network topology. In this embodiment, through the heartbeat detection mechanism and the mechanisms such as forwarding node and node performance evaluation, the path can be searched again, and the path is automatically adjusted to the node a-node D-node F-node C, thereby ensuring the stability of communication in the ad hoc network process.
Specifically, during searching, the node a searches for the node D located in the communication range thereof through the heartbeat detection mechanism, then determines whether a route to the node C exists in a route list of the node D, and if so, determines a path from the node a to the node C.
It should be noted that, in this embodiment, if there are multiple paths from the node a to the target node C, the selection may be performed according to the situation of the packet data: selecting the shortest path when the data content data of the message data is less; if the transmitted data content is larger and the requirement of higher computation amount exists, the path with good node performance is preferentially selected.
Meanwhile, in the transmission and processing process of the message data, when the message data is transmitted to the F node, if the F node finds that the node performance of the G node in the communication range of the F node is higher than that of the F node, and when the G node is judged to be in a working idle state, the F node can hand part of the operation tasks to the G node to be completed, the G node returns to the F node after completing the operation, and then the G node is uniformly collected by the F node and then is sent to the C node, so that the effect of optimizing the overall operation speed and efficiency of the system is achieved.
In summary, in this embodiment, by adding the forwarding node IP, the routing hop count, and the node performance in the packet data, it is possible to complete transmission and sharing of the packet data in the ad hoc network better and faster, so that the ad hoc network can automatically recover communication after a certain node fails, and meanwhile, the data calculation workload of each device can be balanced according to the node performance, thereby achieving the effect of improving the overall operation stability, speed, and efficiency of the ad hoc network.
Referring to fig. 3, an embodiment of the present invention further provides an ad hoc network communication device based on heterogeneous devices of the internet of things, including:
a receiving unit 10, configured to receive the packet data transmitted by the previous-hop node and perform operation processing on the packet data; wherein the message data includes: data content, a source node IP, a target node IP, a forwarding node IP of a previous hop node, a routing hop count from the source node to a current node and node performance of each node in the ad hoc network; when the data content in the message data is operated, part of operation tasks are sent to peripheral nodes in an idle state; the peripheral nodes are other nodes in a communication range; receiving data returned after peripheral node operation, and generating message data to be transmitted according to the data obtained by the operation of the peripheral node and the data returned by the peripheral node;
the route searching unit 20 is configured to search, according to a target node IP, whether an effective route capable of reaching a target node corresponding to the target node IP exists in a routing table of the route searching unit; if yes, updating the message data, and sending the updated message data according to the effective route and the node performance of the current node; in the updated message data, the IP of the forwarding node is updated to the IP of the current node, and the route hop number is added by 1; if not, starting a route discovery process, updating message data after finding an available route, and sending the message data according to the node performance of the current node; and in the updated message data, the IP of the forwarding node is updated to the IP of the current node, and the route hop number is added by 1.
Preferably, the node performance of each node is evaluated by a benchmark method; during evaluation, a section of test program is operated in each node, and the execution time of each node for executing the test program is obtained to determine the performance of the equipment, so that the performance of the nodes is graded; after the nodes are graded in performance grade, the transmission speed of the message data is dynamically controlled through the performance grade, so that each node can correctly receive and process the data.
Preferably, the method further comprises the following steps:
the broadcast unit is used for regularly broadcasting a heartbeat detection message to inform the position of the peripheral node; and
and the heartbeat detection message receiving unit is used for receiving heartbeat detection messages sent by other nodes so as to determine whether the nodes exist or leave the communication range.
Preferably, the method further comprises the following steps:
a reverse route establishing unit, configured to establish a reverse route based on the forwarding node IP; the reverse route is a route from the current node to the source node.
Preferably, the apparatus further comprises a path selection unit, configured to:
when judging that a plurality of paths from the current node to the target node exist, acquiring the data volume of the data content of the message data; when the data volume is smaller than a preset threshold value, selecting the shortest path as a transmission path of the message data; and when the data volume is greater than a preset threshold value and the calculation volume requirement is greater than a preset requirement, acquiring a path with better node performance in the plurality of paths as a transmission path of the message data.
Preferably, the computing task allocation unit is further included, configured to:
when the data content in the message data is operated, part of operation tasks are sent to peripheral nodes in an idle state; the peripheral nodes are other nodes in a communication range; receiving data returned after peripheral node operation, and generating message data to be transmitted according to the data obtained by the operation of the peripheral node and the data returned by the peripheral node; and sending the message data to be transmitted to the next node in the route.
Preferably, the task size of the partial computation task is determined by the node performance of the peripheral node.
Preferably, the message data further includes a protocol number and a check.
As shown in fig. 2, an embodiment of the present invention further provides an ad hoc network, including a plurality of nodes; each node has a preset communication range and can send message data to other nodes in the communication range of the node;
each node comprises a processor and a memory, wherein the memory stores executable codes, and the executable codes can be executed by the processor to realize the ad hoc network communication method based on the internet of things heterogeneous equipment according to any embodiment.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (9)
1. An ad hoc network communication method based on internet of things heterogeneous equipment is characterized by comprising the following steps:
for each current node in the ad hoc network:
receiving message data transmitted by a previous hop node and carrying out operation processing on the message data; wherein the message data includes: data content, a source node IP, a target node IP, a forwarding node IP of a previous hop node, a routing hop count from the source node to a current node and node performance of each node in the ad hoc network; when the data content in the message data is operated, part of operation tasks are sent to peripheral nodes in an idle state; the peripheral nodes are other nodes in a communication range; receiving data returned after peripheral node operation, and generating message data to be transmitted according to the data obtained by the operation of the peripheral node and the data returned by the peripheral node;
according to the target node IP, whether an effective route capable of reaching the target node corresponding to the target node IP exists in a routing table of the routing table is searched;
if yes, updating the message data, and sending the updated message data according to the effective route and the node performance of the current node; in the updated message data, the IP of the forwarding node is updated to the IP of the current node, and the route hop number is added by 1;
if not, starting a route discovery process, updating message data after finding an available route, and sending the message data according to the node performance of the current node; and in the updated message data, the IP of the forwarding node is updated to the IP of the current node, and the route hop number is added by 1.
2. The ad-hoc network communication method based on the internet-of-things heterogeneous device according to claim 1, wherein the node performance of each node is evaluated by a benchmark method; during evaluation, a section of test program is operated in each node, and the execution time of each node for executing the test program is obtained to determine the performance of the equipment, so that the performance of the nodes is graded; after the nodes are graded in performance level, the transmission speed of the message data is dynamically controlled according to the performance level.
3. The ad-hoc network communication method based on the internet-of-things heterogeneous device according to claim 1, further comprising:
periodically broadcasting a heartbeat detection message to inform the position of a peripheral node; and
and receiving heartbeat detection messages sent by other nodes to determine whether the nodes exist or leave the communication range.
4. The ad-hoc network communication method based on the internet-of-things heterogeneous device according to claim 1, further comprising:
establishing a reverse route based on the forwarding node IP; the reverse route is a route from the current node to the source node.
5. The ad-hoc network communication method based on the internet-of-things heterogeneous device according to claim 1, further comprising:
when judging that a plurality of paths from the current node to the target node exist, acquiring the data volume of the data content of the message data;
when the data volume is smaller than a preset threshold value, selecting the shortest path as a transmission path of the message data;
and when the data volume is greater than a preset threshold value and the calculation volume requirement is greater than a preset requirement, acquiring a path with better node performance in the plurality of paths as a transmission path of the message data.
6. The Internet of things heterogeneous device-based ad hoc network communication method according to claim 1, wherein the task volume of the partial operation task is determined by node performance of the peripheral nodes.
7. The ad-hoc network communication method based on the internet-of-things heterogeneous device according to claim 1, wherein the message data further comprises a protocol number and a check.
8. The utility model provides an from network deployment communication device based on heterogeneous equipment of thing networking which characterized in that includes:
the receiving unit is used for receiving the message data transmitted by the previous hop node and carrying out operation processing on the message data; wherein the message data includes: data content, a source node IP, a target node IP, a forwarding node IP of a previous hop node, a routing hop count from the source node to a current node and node performance of each node in the ad hoc network; when the data content in the message data is operated, part of operation tasks are sent to peripheral nodes in an idle state; the peripheral nodes are other nodes in a communication range; receiving data returned after peripheral node operation, and generating message data to be transmitted according to the data obtained by the operation of the peripheral node and the data returned by the peripheral node;
the route searching unit is used for searching whether an effective route which can reach a target node corresponding to a target node IP exists in a route table of the route searching unit according to the target node IP; if yes, updating the message data, and sending the updated message data according to the effective route and the node performance of the current node; in the updated message data, the IP of the forwarding node is updated to the IP of the current node, and the route hop number is added by 1; if not, starting a route discovery process, updating message data after finding an available route, and sending the message data according to the node performance of the current node; and in the updated message data, the IP of the forwarding node is updated to the IP of the current node, and the route hop number is added by 1.
9. An ad-hoc network comprising a plurality of nodes; each node has a preset communication range and can send message data to other nodes in the communication range of the node;
wherein each node comprises a processor and a memory, the memory storing executable code, the executable code being executable by the processor to implement the method for ad hoc network communication based on internet of things heterogeneous devices according to any one of claims 1 to 7.
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| CN110493716B (en) * | 2019-08-21 | 2020-12-11 | 科航（苏州）信息科技有限公司 | Automatic deployment method and device for communication nodes |
| CN110958629A (en) * | 2019-12-31 | 2020-04-03 | 北京云联慧通科技有限公司 | Distributed self-organizing wireless narrowband communication method, device, terminal equipment and system |
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| CN102387550A (en) * | 2011-10-14 | 2012-03-21 | 北京航空航天大学 | Hierarchical cooperation access method and system as well as cooperative nodes |
| CN103312619A (en) * | 2013-05-30 | 2013-09-18 | 南京邮电大学 | Synchronous deleting and message transferring congestion control method |
| CN103701700A (en) * | 2013-12-24 | 2014-04-02 | 中国科学院信息工程研究所 | Node discovering method and system in communication network |
| CN104023371A (en) * | 2014-06-11 | 2014-09-03 | 中国联合网络通信集团有限公司 | Method and system of multi-path routing of vehicular ad hoc network |
| CN104936249A (en) * | 2015-06-05 | 2015-09-23 | 电子科技大学 | Route self-healing method suitable for wireless network |
| CN106686686A (en) * | 2016-09-23 | 2017-05-17 | 东南大学 | Wireless sensor network ad hoc network method for crop greenhouse cultivation |
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