CN113596952A - Autonomous selection dynamic route relay method and system - Google Patents
Autonomous selection dynamic route relay method and system Download PDFInfo
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- CN113596952A CN113596952A CN202110841654.7A CN202110841654A CN113596952A CN 113596952 A CN113596952 A CN 113596952A CN 202110841654 A CN202110841654 A CN 202110841654A CN 113596952 A CN113596952 A CN 113596952A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
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Abstract
The invention discloses an autonomous selection dynamic route relay method and an autonomous selection dynamic route relay system, and belongs to the technical field of communication. In the invention, a ground terminal periodically broadcasts a time slot distribution table, both the ground relay and an airborne relay transmit the time slot distribution table, a perimeter terminal receives the time slot distribution table and simultaneously judges which routing signal is good, a time slot application frame is sent in an idle time slot in the time slot distribution table, the ground terminal distributes a time slot to the perimeter terminal after receiving the time slot application frame and updates the time slot distribution table to continue periodic broadcast sending, and the perimeter terminal selects a routing path with relatively good signals to transmit data. The invention can autonomously select the path with better communication quality to carry out the relay transmission of the data, and has simple, stable and reliable implementation mode.
Description
Technical Field
The invention belongs to the technical field of communication, and particularly relates to an autonomous selection dynamic route relay method and an autonomous selection dynamic route relay system.
Background
With the rapid development of the measurement and control technology, the use environment of the data chain is more and more complex, and when the communication environment is not available, the data chain with the relay function needs to be added.
The common relay data chain adopts a plurality of sets of equipment with different frequencies to realize the relay function, and the time division data chain adopting the same frequency only has a fixed relay station and does not relate to the routing function of two or more relay stations. The routing is selected using standard network layer protocols in mobile communications, but is not applicable to other communication systems. At present, in measurement and control communication, under the condition that two relay stations exist, a data link terminal cannot autonomously select a channel with better communication quality to perform relay transmission of data, and communication efficiency is seriously influenced.
Disclosure of Invention
In view of the above, the present invention provides an autonomous dynamic routing relay method and system, which can autonomously select a path with better communication quality for relaying data, and the implementation manner is simple, stable and reliable.
In order to achieve the purpose, the invention adopts the technical scheme that:
an autonomous selection dynamic routing relay method is applied to a system comprising a main node, a relay node and a terminal node, wherein the main node allocates time slots for other nodes; the method comprises the following steps:
step 1, a main node periodically broadcasts a time slot distribution table;
step 2, the relay node forwards the time slot allocation table to the terminal node;
step 3, only receiving the signal from the relay node after the terminal node is powered on, and judging the strength of the signal;
step 4, the terminal node sends a time slot application frame in an idle time slot according to the time slot allocation table, and forwards the time slot application frame to the main node through the relay node with the strongest signal; the time slot application frame comprises information of the relay node with the strongest signal;
and step 5, after receiving the time slot application frame of the terminal node, the main node updates the time slot allocation table and broadcasts the time slot allocation table to realize dynamic routing relay.
Further, the method also comprises the following steps:
and 6, the terminal node of the allocated time slot continues to receive the signal from the relay node and judges the strength of the signal, if the relay node with the strongest signal changes, a new time slot application frame is sent to the main node through the new relay node with the strongest signal, and the main node updates the time slot allocation table and broadcasts after receiving the new time slot application frame to realize the change of the routing relay.
Further, the master node is a ground terminal, the relay nodes include ground relays and airborne relays, and the terminal nodes are perimeter terminals.
An autonomously selected dynamic routing relay system comprising a master node, a relay node and a terminal node, wherein:
the main node periodically broadcasts a time slot allocation table, receives a time slot application frame forwarded by the relay node, allocates time slots for the terminal node and the corresponding relay node with the strongest signal and realizes routing relay;
the relay node is used for forwarding information between the main node and the terminal node;
the terminal node only receives the signal from the relay node and judges the strength of the signal, when the terminal node is powered on or the relay node with the strongest signal changes, the information of the relay node with the strongest signal at present is written into the time slot application frame, and the time slot application frame is sent to the main node through the relay node with the strongest signal at present.
Further, the master node is a ground terminal, the relay nodes include ground relays and airborne relays, and the terminal nodes are perimeter terminals.
The invention has the following advantages:
(1) the invention realizes dynamic route selection by using a simpler mode, does not relate to network layer protocols, and can avoid network vulnerabilities.
(2) The invention can select the path with better communication quality to transmit data and can freely switch.
Drawings
FIG. 1 is a schematic diagram of a test system according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The utility model provides an autonomous selection's dynamic routing relay system, includes ground terminal, ground relay, machine carries relay, perimeter terminal, and perimeter terminal and ground terminal all are connected with a fixed attenuator, and ground terminal's fixed attenuator connects ground relay and machine carries relay respectively through the multiplexer, and ground relay and machine carries relay and is connected with perimeter terminal's fixed attenuator through a variable attenuator respectively. Wherein:
the ground terminal periodically broadcasts a time slot allocation table, receives a time slot application frame forwarded by the ground/airborne relay, allocates time slots for the perimeter terminal and the relay with the strongest signal, and realizes routing relay;
the ground/airborne relay is used for forwarding information between the ground terminal and the perimeter terminal;
the peripheral terminal only receives the signals from the relay and judges the strength of the signals, when the peripheral terminal is powered on or the relay with the strongest signal is changed, the information of the relay with the strongest signal is written into the time slot application frame, and the time slot application frame is sent to the ground terminal through the relay node with the strongest signal.
An autonomously selected dynamic route relay method, comprising the steps of:
step 1, the ground terminal periodically broadcasts a time slot allocation table, and the ground terminal serving as a main node can allocate time slots to other slave nodes in the system; the slot allocation table format is shown in table 1:
TABLE 1 time Slot Allocation frame
| Serial number | Content providing method and apparatus | Occupied byte | Remarks for note |
| 1 | Frame header | 2 | |
| 2 | Source address | 2 | Ground terminal ID |
| 3 | Destination address | 2 | Broadcasting |
| 4 | Forwarding addresses | 2 | |
| 5 | Frame header residual byte | X | |
| 6 | Timeslot allocation frame type | 1 byte | Timeslot allocation frame type |
| 7 | MAC_ID | 2 bytes | Aircraft address 1 |
| 8 | MAC_ID | 2 bytes | Occupying the address ID transmitted in slot 1, with no allocated padding of 0X00 |
| 9 | MAC_ID | 2 bytes | Occupying the address ID transmitted in slot 2, with no allocated padding of 0X00 |
| 10 | MAC_ID | 2 bytes | Occupying the address ID transmitted in slot 3, with no allocated padding of 0X00 |
| 11 | MAC_ID | 2 bytes | Occupying the address ID transmitted in slot 4, with no allocated padding of 0X00 |
| 12 | MAC_ID | 2 bytes | Occupying the address ID transmitted in time slot 5, with no allocated padding of 0X00 |
| 13 | MAC_ID | 2 bytes | Occupying the address ID transmitted in slot 6, with no allocated padding of 0X00 |
| 14 | For standby | 1 byte |
Step 2, a ground relay and an airborne relay forward time slot distribution table;
step 3, only receiving signals from a ground relay and an airborne relay after the peripheral terminal is electrified, and judging the strength of the signals;
step 4, the perimeter terminal sends a time slot application frame in the idle time slot in the time slot allocation table, and the time slot application frame is used as a forwarding node through a path with good signals and sent to the ground terminal; the format of the slot application frame is shown in table 2:
TABLE 2 time Slot application frame
| Serial number | Content providing method and apparatus | Occupied byte | Remarks for note |
| 1 | Frame header | 2 | |
| 2 | Source address | 2 | Perimeter terminal ID |
| 3 | Destination address | 2 | Ground terminal ID |
| 4 | Forwarding addresses | 2 | |
| 5 | Frame header residual byte | X | |
| 6 | Timeslot application frame type | 1 byte | Timeslot application frame type |
| 7 | Application node ID number | 2 bytes | Application node ID number |
| 8 | Whether or not relaying is required | 1 byte | 0XFF required on-board relay 0X55 ground relay 0X 00: straight-through link |
Step 5, the ground terminal receives the time slot application frame sent by the perimeter terminal, allocates time slots to the perimeter terminal and the corresponding relay, updates a time slot allocation table and broadcasts periodically;
and 6, repeating the steps 3-5 to finish the data transmission after the signal strength is changed.
The effects of the present invention can be further illustrated by the following tests:
1. test conditions.
1, a certain type of measurement and control and information transmission data chain system;
the debugging machine is configured as 1 platform of Intel Core i7-3770 CPU 3.4Ghz, 8GB memory;
2 variable attenuators;
a plurality of fixed attenuators;
1 divider is provided;
a test cable, a plurality of strips;
the software environment is a Windows 764 bit professional edition.
The test system is shown in FIG. 1.
2. Test methods.
The dynamic routing relay method has wide adaptability and can be added into various types of data chain systems. In the test, a ground terminal is connected with an airborne relay, a ground relay and a perimeter terminal through wires, a fixed attenuator value between the perimeter terminal and the ground terminal is larger than a communication condition, signals between the perimeter terminal and the ground terminal are not communicated, variable attenuators are respectively added between the perimeter terminal and the ground relay and between the perimeter terminal and the airborne relay, the variable attenuator value between the perimeter terminal and the ground relay is increased, the ground terminal sees received perimeter terminal data, and whether a forwarding address in the data is the airborne relay or not; only increasing the variable attenuator value between the perimeter terminal and the airborne relay, and checking the received data of the perimeter terminal at the ground terminal to determine whether the forwarding address in the data is the ground relay; and comparing the variable attenuation values of the ground terminal and the airborne relay or the ground relay, and then checking whether the forwarding address in the data of the perimeter terminal received by the ground terminal is consistent with the route with the small attenuation value.
3. Test contents and results.
The test results were consistent with expectations.
The test result shows that the method can realize the dynamic route selection, can automatically switch the route with better channel condition, has simple protocol and does not relate to network protocol.
Claims (5)
1. An autonomous selection dynamic route relay method is characterized in that the method is applied to a system comprising a main node, a relay node and a terminal node, wherein the main node allocates time slots for other nodes; the method comprises the following steps:
step 1, a main node periodically broadcasts a time slot distribution table;
step 2, the relay node forwards the time slot allocation table to the terminal node;
step 3, only receiving the signal from the relay node after the terminal node is powered on, and judging the strength of the signal;
step 4, the terminal node sends a time slot application frame in an idle time slot according to the time slot allocation table, and forwards the time slot application frame to the main node through the relay node with the strongest signal; the time slot application frame comprises information of the relay node with the strongest signal;
and step 5, after receiving the time slot application frame of the terminal node, the main node updates the time slot allocation table and broadcasts the time slot allocation table to realize dynamic routing relay.
2. The autonomously selected dynamic route relaying method according to claim 1, further comprising the steps of:
and 6, the terminal node of the allocated time slot continues to receive the signal from the relay node and judges the strength of the signal, if the relay node with the strongest signal changes, a new time slot application frame is sent to the main node through the new relay node with the strongest signal, and the main node updates the time slot allocation table and broadcasts after receiving the new time slot application frame to realize the change of the routing relay.
3. The method of claim 1, wherein the master node is a ground terminal, the relay nodes comprise a ground relay and an airborne relay, and the terminal node is a perimeter terminal.
4. An autonomous selection dynamic routing relay system, comprising a master node, a relay node and a terminal node, wherein:
the main node periodically broadcasts a time slot allocation table, receives a time slot application frame forwarded by the relay node, allocates time slots for the terminal node and the corresponding relay node with the strongest signal and realizes routing relay;
the relay node is used for forwarding information between the main node and the terminal node;
the terminal node only receives the signal from the relay node and judges the strength of the signal, when the terminal node is powered on or the relay node with the strongest signal changes, the information of the relay node with the strongest signal at present is written into the time slot application frame, and the time slot application frame is sent to the main node through the relay node with the strongest signal at present.
5. The autonomously selected dynamic routing relay system of claim 4, wherein said master node is a ground terminal, said relay nodes comprise a ground relay and an airborne relay, and said terminal nodes are perimeter terminals.
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| CN111447690A (en) * | 2020-03-25 | 2020-07-24 | 中国人民解放军第六九O五工厂 | Rapid dynamic time slot application method and multichannel radio station |
| CN111885615A (en) * | 2020-07-24 | 2020-11-03 | 成都傅立叶电子科技有限公司 | Center transferable networking communication method based on TDMA |
| CN112218246A (en) * | 2020-09-08 | 2021-01-12 | 天地（常州）自动化股份有限公司 | BLE ad hoc network suitable for mine linear space and forming method thereof |
| CN113162655A (en) * | 2020-01-23 | 2021-07-23 | 华为技术有限公司 | Power line communication time slot distribution method and device |
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2021
- 2021-07-26 CN CN202110841654.7A patent/CN113596952A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106535341A (en) * | 2016-11-24 | 2017-03-22 | 北京必创科技股份有限公司 | Big data transmission method of wireless sensor network |
| CN110519845A (en) * | 2019-05-16 | 2019-11-29 | 重庆邮电大学 | The unmanned plane ad hoc network multi-hop TDMA cut-in method for assisting distribution based on time slot and using |
| CN113162655A (en) * | 2020-01-23 | 2021-07-23 | 华为技术有限公司 | Power line communication time slot distribution method and device |
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