CN115776645A - Group control method, system and storage medium based on narrow-band low-power wireless network - Google Patents
Group control method, system and storage medium based on narrow-band low-power wireless network Download PDFInfo
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- CN115776645A CN115776645A CN202211165684.1A CN202211165684A CN115776645A CN 115776645 A CN115776645 A CN 115776645A CN 202211165684 A CN202211165684 A CN 202211165684A CN 115776645 A CN115776645 A CN 115776645A
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Abstract
The invention discloses a cluster control method, a system and a storage medium based on a narrow-band low-power wireless network, wherein the method is applied to a gateway and comprises the steps of setting at least two devices needing synchronous control as a same control group; selecting a device from the control group as an optimal agent node through a preset election mechanism; and sending a control message to the optimal proxy node in a unicast mode, wherein the control message is used for forwarding the optimal proxy node to all other devices in the control group in a single-hop multicast mode, and the control message is also used for controlling the optimal proxy node and all other devices in the control group to analyze and execute corresponding command actions. The invention can only need to select one proxy node and forward the control message once, thus greatly reducing the cost, greatly improving the command which can be borne by the network in unit time, reaching the control rate of more than 10 times/second and reducing the occupation of wireless broadband while solving the control performance.
Description
Technical Field
The invention relates to the technical field of wireless communication group control, in particular to a group control method, a group control system and a storage medium based on a narrow-band low-power wireless network.
Background
With the development of smart homes, zigBee is applied to smart homes more and more. At present, the broadcast of the ZigBee is flood broadcast, the cost is high, for example, 10 lamps are arranged in a pile of equipment, the broadcast is transmitted by 10 lamps in one broadcast according to the ZigBee protocol, the broadcast is transmitted for 10 times, and the ZigBee protocol ensures that the broadcast is transmitted completely in a simple and rough way.
When more ZigBee devices form a larger network in a home, if continuous and efficient group control is needed, the current broadcast/multicast or unicast defined by ZigBee cannot meet the performance requirement of more than 5 times/second, and a large amount of wireless bandwidth is occupied.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a group control method, system and storage medium based on a narrow-band low-power wireless network with high control performance and low bandwidth occupation.
The technical scheme adopted by the invention for solving the technical problem is as follows: a cluster control method based on a narrow-band low-power wireless network is constructed and applied to a gateway, the narrow-band low-power wireless network comprises a plurality of devices, and the method comprises the following steps:
setting at least two devices needing synchronous control as the same control group;
selecting a device from the control group as an optimal proxy node through a preset election mechanism;
and sending a control message to the optimal proxy node in a unicast mode, wherein the control message is used for forwarding the optimal proxy node to all other devices in the control group in a single-hop multicast mode, and the control message is also used for controlling the optimal proxy node and all other devices in the control group to analyze and execute corresponding command actions.
In one embodiment of the group control method based on a narrowband low power consumption wireless network according to the present invention, the electing a device from the control group as an optimal proxy node through a preset election mechanism includes:
sending an election multicast command to the control group, wherein the election multicast command comprises a group address, and is used for triggering each device in the control group to send a preset number of multicast packets for testing to all other devices in the control group according to the group address, and counting the received multicast packets from all other devices as election information;
and according to the election information reported by each device in the control group, selecting one device in the control group as an optimal proxy node according to a first election condition, or the first election condition and a second election condition, or the first election condition, the second election condition and a third election condition, wherein the single-hop multicast of the optimal proxy node covers all other devices in the control group.
In one embodiment, in the group control method based on the narrowband low-power wireless network according to the present invention, the election multicast command further includes an election timeout time;
the election multicast command is further configured to trigger each device in the control group to randomly and continuously send a preset number of multicast packets for testing to all other devices in the control group within the election timeout period according to the group address, and count the multicast packets received within the election timeout period from all other devices as the election information.
In one embodiment of the group control method based on the narrowband low power consumption wireless network, the election information includes a sender address of the multicast packet, a total number of times that the multicast packet is sent by the sender address, and an average signal strength of the multicast packet corresponding to the sender address.
In one embodiment of the group control method based on a narrow-band low-power wireless network, in the group control method based on a narrow-band low-power wireless network according to the present invention, the first election condition is to screen out devices that can receive the multicast packet sent by the devices at most;
the second election condition is that the device with the highest average number of times that the sent multicast packet is received by other devices is screened from the devices screened under the first election condition;
and the third election condition is that the device with the strongest average signal strength of all the received multicast packets is selected from the devices selected under the second election condition.
In one embodiment of the group control method based on the narrowband low power consumption wireless network according to the present invention, after the selecting a device from the control group as an optimal proxy node through a preset election mechanism, the method further includes: recording the address of the optimal proxy node;
the sending the control message to the optimal proxy node in a unicast manner includes:
and sending the control message to the optimal proxy node in a unicast mode according to the address of the optimal proxy node, wherein the control message comprises a control command.
In one embodiment, in the group control method based on the narrowband low-power wireless network, the method further includes:
if the single-hop multicast of the optimal proxy node cannot cover all other devices in the control group, selecting a device from all other devices in the control group except the optimal proxy node through the preset election mechanism as a secondary proxy node, wherein the single-hop multicast of the optimal proxy node and the secondary proxy node covers all other devices in the control group, and the single-hop multicast of the optimal proxy node covers the secondary proxy node;
the control message is also used for forwarding the optimal proxy node to all other devices in the control group in a single-hop multicast manner, each device performs matching of the secondary proxy node, and if the matching is consistent, the control message is forwarded to all other devices in the control group in a single-hop multicast manner so as to cover the devices which cannot be covered by the optimal proxy node, and the control message is also used for controlling the optimal proxy node, the secondary proxy node and all other devices in the control group to analyze and execute corresponding command actions.
In one embodiment of the group control method based on a narrowband low power consumption wireless network, after reselecting a device as a secondary proxy node from all other devices in the control group except the best proxy node through the preset election mechanism, the method further includes: recording the address of the secondary proxy node;
the control message further comprises an address of the secondary proxy node;
the matching of the secondary proxy node by each device comprises: and each device is matched according to the address of the secondary proxy node and the address of the device per se.
The invention also constructs a group control system based on the narrow-band low-power wireless network, which comprises a gateway and a plurality of devices in the narrow-band low-power wireless network, wherein the gateway is used for realizing any group control method based on the narrow-band low-power wireless network.
The present invention also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor can implement the steps of any one of the above-mentioned group control methods based on a narrowband low power consumption wireless network.
By implementing the invention, the following beneficial effects are achieved:
the invention sets at least two devices needing synchronous control as a same control group, then selects a device from the control group as an optimal proxy node through a preset election mechanism, and finally sends a control message to the optimal proxy node in a unicast mode, wherein the control message is used for forwarding the optimal proxy node to all other devices in the control group in a single-hop multicast mode, and the control message is also used for controlling the optimal proxy node and all other devices in the control group to analyze and execute corresponding command actions, so that only one proxy node is needed to be selected and the control message is forwarded once, thereby greatly reducing the overhead, greatly improving the commands borne by the network in unit time, reaching the control rate of more than 10 times/second, reducing the occupation of wireless broadband while solving the control performance, reducing the interference to other devices and having no obvious influence on the transmission of other commands of the network.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a flow chart of a group control method based on a narrowband low-power wireless network according to the present invention;
FIG. 2 is a schematic diagram of the present invention setting up a control group under a ZigBee network and electing an optimal agent node;
FIG. 3 is a schematic illustration of election information according to the present invention;
fig. 4 is a schematic diagram of setting up a control group under a ZigBee network and electing an optimal agent node and a secondary agent node.
Detailed Description
For a more clear understanding of the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
It should be noted that the flow charts shown in the drawings are only exemplary and do not necessarily include all the contents and operations/steps, nor must they be executed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
First, it should be noted that unicast: is a 1 to 1 communication mode. Single-hop multicast: is a 1-to-many communication mode and is not retransmitted for broadcasting.
The embodiment of the invention discloses a group control method based on a narrow-band low-power wireless network, which is applied to a gateway. The narrow-band low-power wireless network comprises ZigBee (Zigbee), bluetooth mesh, 2.4G and Sub-1G.
In this embodiment, taking the ZigBee network shown in fig. 2 and fig. 4 as an example, the ZigBee gateway is connected to an external network through WiFi, and there are 9 ZigBee devices from ZB device 1 to ZB device 9 in the ZigBee network below, if the ZB devices 4 to ZB device 9 are RGB lamps at this time, the gateway needs to group control them simultaneously and consistently, then a group control method based on a narrow-band low-power wireless network needs to be used, as shown in fig. 1, the method includes the following steps:
s110: setting at least two ZigBee devices needing synchronous control as the same control group, namely setting ZB devices 4 to 9 needing synchronous control as the same control group;
s120: selecting a device from the control group as an optimal proxy node through a preset election mechanism, wherein the selected optimal proxy node is a ZB device 4 in the embodiment;
s130: and sending a control message to the optimal proxy node in a unicast manner, where the control message is used for forwarding the optimal proxy node to all other devices in the control group in a single-hop multicast manner, and the control message is also used for controlling the optimal proxy node and all other devices in the control group to parse and execute corresponding command actions, such as dimming.
In this embodiment, the control message forwarded by the optimal proxy node ZB device 4 in a single-hop multicast manner is directly ignored after being received by the ZigBee devices outside the control group (e.g., ZB devices 1 to 3), the control message is not forwarded but processed after being received by the ZigBee devices inside the control group (e.g., ZB devices 5 to 9), and the ZB device 4 itself also processes the control message.
Specifically, the electing a device from the control group as an optimal proxy node through a preset election mechanism includes:
and sending an election multicast command to the control group, wherein the election multicast command comprises a group address, the election multicast command is used for triggering each device in the control group to send a preset number of multicast packets for testing to all other devices in the control group according to the group address, and counting the received multicast packets from all other devices as election information.
For example, the control group includes ZB devices 4 to 9, the gateway sends an election multicast command to the control group, the ZB devices 4 to 9 all receive the election multicast command, and after receiving the election multicast command, each ZigBee device randomly and continuously sends a preset number of multicast packets to other ZigBee devices in the control group.
And selecting one device in the control group as an optimal proxy node according to a first election condition, or the first election condition and a second election condition, or the first election condition, the second election condition and a third election condition according to the election information reported by each device in the control group, wherein the single-hop multicast of the optimal proxy node covers all other devices in the control group. It should be noted that, in the present embodiment, the execution order of the election conditions is the first election condition, the second election condition and the third election condition.
According to the characteristics of ZigBee multicast, because a gateway uses the control group address as a multicast address to send an election multicast command, only ZigBee devices in the control group can receive the election multicast command, like ZB device 2 can ignore the election multicast command even if receiving the election multicast command in a wireless signal range, after each ZigBee device in the control group receives the election multicast command, a multicast packet can be sent, zigBee devices outside the control group can directly ignore the multicast packet after receiving the election multicast command, and a network layer of the ZigBee devices in the control group can not forward but process the multicast packet.
In one embodiment, the election multicast command further includes an election timeout time. Correspondingly, the election multicast command is further configured to trigger each device in the control group to randomly and continuously send a preset number of multicast packets for testing to all other devices in the control group within the election timeout period according to the group address, and count the multicast packets received within the election timeout period from all other devices as the election information, where the election information includes a sender address of the multicast packet, a total number of times that the multicast packets are sent by the sender address, and an average signal strength of the multicast packets corresponding to the sender address, as shown in fig. 3.
And the first election condition is to filter out the devices which can receive the multicast packet sent by the device by the most other devices. And the second election condition is that the device with the highest average number of times of receiving the multicast packet sent by other devices is selected from the devices selected by the first election condition. And the third election condition is that the equipment with the strongest average signal intensity of all the received multicast packets is screened from the equipment screened under the second election condition.
For example, the election information reported by each device in the control group is received, that is, as shown in fig. 3, the devices which can receive the multicast packet sent by most other ZigBee devices are screened out according to a first election condition, that is, the multicast packets sent by the ZB devices 4 to 9 can be received by the ZB devices 4 to 9; when a plurality of ZigBee devices are screened according to the first election condition, the device with the highest average number of times that the multicast packet sent by the ZB device 4 is received by other ZigBee devices is screened according to the second election condition, that is, the multicast packet sent by the ZB device 4 is received by other ZigBee devices with the highest average number of times, and the ZB device 4 serves as the optimal proxy node. In other embodiments, when there are multiple ZigBee devices after screening according to the second election condition, the ZigBee device with the strongest average signal strength of all received multicast packets is screened according to the third election condition.
In this embodiment, after the electing a device from the control group as an optimal proxy node through a preset election mechanism, the method further includes: and recording the address of the optimal proxy node. Correspondingly, the sending the control message to the best proxy node in a unicast manner includes: and sending the control message to the optimal proxy node in a unicast mode according to the address of the optimal proxy node, wherein the control message comprises a control command, such as a dimming command.
The method also comprises the following steps: if the single-hop multicast of the optimal proxy node cannot cover all other devices in the control group, selecting a device as a secondary proxy node from all other devices in the control group except the optimal proxy node through the preset election mechanism, wherein the single-hop multicast of the optimal proxy node and the secondary proxy node covers all other devices in the control group, and the single-hop multicast of the optimal proxy node covers the secondary proxy node;
the control message is also used for forwarding the optimal proxy node to all other devices in the control group in a single-hop multicast manner, each device performs matching of the secondary proxy node, and if the optimal proxy node is consistent with the secondary proxy node, the control message is forwarded to all other devices in the control group in a single-hop multicast manner so as to cover the devices which cannot be covered by the optimal proxy node, and the control message is also used for controlling the optimal proxy node, the secondary proxy node and all other devices in the control group to analyze and execute corresponding command actions.
The preset election mechanism is the first election condition, the second election condition, and the third election condition, and will not be described herein again. And, if the single-hop multicast of the best proxy node cannot cover all other devices in the control group, the method includes: and if the single-hop multicast of the optimal proxy node is judged to be unable to cover all other devices in the control group according to the election information. The gateway can know the coverage condition of each device, namely election information, according to the list of other devices carried by each device.
And after the electing a device as a secondary agent node from all other devices in the control group except the optimal agent node through the preset election mechanism, the method further includes: and recording the address of the secondary proxy node. Correspondingly, the control message further comprises the address of the secondary proxy node. The matching of the secondary proxy node by each device comprises: and each device is matched according to the address of the secondary proxy node and the address of the device per se.
Completely, as shown in fig. 4, when group control of ZB devices 4 to 9 is required, the ZigBee gateway sends a control message to the ZB device 4 as the best proxy node in a unicast manner, the ZB device 4 receives the control message and forwards the control message to all other ZigBee devices in the control group in a single-hop multicast manner, the ZB device 5, the ZB device 7, the ZB device 8, and the ZB device 9 will receive the control message from the ZB device 4, but due to distance and other reasons, the ZB device 6 cannot receive the control message from the ZB4, and because the control message is the single-hop multicast, the ZB device 5, the ZB device 7, the ZB device 8, and the ZB device 9 will not forward the message at the network layer, but the message will reach the application layer to process and analyze and execute a corresponding command, such as dimming, and at the same time, the address of the next proxy node and the address of the ZB device 5 will be matched, and if the message is not consistent, no action is required; if the two control groups are consistent, the ZB device 5 forwards the control message to all other ZigBee devices in the control group in a single-hop multicast manner, at this time, the ZB device 6 receives the control message forwarded by the ZB device 5, and the ZB device 4, the ZB device 7, the ZB device 8, and the ZB device 9 may also receive the control message forwarded by the ZB device 5, but the ZB device 4, the ZB device 7, the ZB device 8, and the ZB device 9 may perform command deduplication after receiving the control message, so as to prevent repeated execution, so far, all ZigBee devices in the control group receive the control message, and perform corresponding command actions according to the control message parsing, thereby completing a complete group control flow.
In the embodiment, the method further comprises: if the single-hop multicast of the optimal proxy node and the secondary proxy node still cannot cover all other devices in the control group, selecting one device from all other devices in the control group except the optimal proxy node and the secondary proxy node through the preset election mechanism to serve as the secondary proxy node, wherein the single-hop multicast of the optimal proxy node, the secondary proxy node and the secondary proxy node covers all other devices in the control group, the single-hop multicast of the optimal proxy node covers the secondary proxy node, the single-hop multicast of the secondary proxy node covers the secondary proxy node, and so on;
the control message is also used for forwarding the optimal proxy node to all other devices in the control group in a single-hop multicast manner, where each device performs matching of the secondary proxy node, and if the optimal proxy node is consistent with the secondary proxy node, each device forwards the matching of the secondary proxy node to all other devices in the control group in a single-hop multicast manner to cover the optimal proxy node and the devices that cannot be covered by the secondary proxy node, and the control message is also used for controlling the optimal proxy node, the secondary proxy node, and all other devices in the control group to parse and execute corresponding command actions.
And, after the pre-set election mechanism elects a device as a secondary proxy node from all other devices in the control group except the optimal proxy node and the secondary proxy node, the method further includes: and recording the address of the secondary proxy node. Correspondingly, the control message also comprises the address of the secondary proxy node. The matching of the secondary proxy node by each device comprises: and each device is matched according to the address of the secondary proxy node and the address of the device.
The preset election mechanism is the first election condition, the second election condition, and the third election condition, and will not be described herein again. And, if the single-hop multicast of the optimal proxy node and the secondary proxy node still cannot cover all other devices in the control group, the method includes: and if the single-hop multicast of the optimal agent node and the secondary agent node is judged to be obtained according to the election information, all other devices in the control group still cannot be covered. The gateway can know the coverage condition of each device, namely election information, according to the list of other devices carried by each device.
An embodiment of the present invention further discloses a group control system based on a narrowband low power consumption wireless network, which includes a gateway and a plurality of devices in the narrowband low power consumption wireless network, where the gateway is configured to implement the group control method based on the narrowband low power consumption wireless network according to the above embodiment, and details are not repeated here.
An embodiment of the present invention further discloses a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the group control method based on the narrowband low power consumption wireless network according to the foregoing embodiment may be implemented, which are not described herein again.
By implementing the invention, the following beneficial effects are achieved:
the invention sets at least two devices needing synchronous control as a same control group, then selects a device from the control group as an optimal proxy node through a preset election mechanism, and finally sends a control message to the optimal proxy node in a unicast mode, wherein the control message is used for forwarding the optimal proxy node to all other devices in the control group in a single-hop multicast mode, and the control message is also used for controlling the optimal proxy node and all other devices in the control group to analyze and execute corresponding command actions, so that only one proxy node is needed to be selected and the control message is forwarded once, thereby greatly reducing the overhead, greatly improving the commands borne by the network in unit time, reaching the control rate of more than 10 times/second, reducing the occupation of wireless broadband while solving the control performance, reducing the interference to other devices and having no obvious influence on the transmission of other commands of the network.
It should be understood that the above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but should not be construed as limiting the scope of the present invention; it should be noted that, for a person skilled in the art, the above embodiments or technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention, that is, the embodiments described in "some embodiments" can be freely combined with any of the above and below embodiments; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (10)
1. A cluster control method based on a narrow-band low-power wireless network is applied to a gateway, and the narrow-band low-power wireless network comprises a plurality of devices, and is characterized by comprising the following steps:
setting at least two devices needing synchronous control as the same control group;
selecting a device from the control group as an optimal agent node through a preset election mechanism;
and sending a control message to the optimal proxy node in a unicast mode, wherein the control message is used for forwarding the optimal proxy node to all other devices in the control group in a single-hop multicast mode, and the control message is also used for controlling the optimal proxy node and all other devices in the control group to analyze and execute corresponding command actions.
2. The group control method based on the narrowband low power consumption wireless network of claim 1, wherein the electing a device from the control group as a best agent node through a preset election mechanism comprises:
sending an election multicast command to the control group, wherein the election multicast command comprises a group address, and is used for triggering each device in the control group to send a preset number of multicast packets for testing to all other devices in the control group according to the group address, and counting the received multicast packets from all other devices as election information;
and selecting one device in the control group as an optimal proxy node according to a first election condition, or the first election condition and a second election condition, or the first election condition, the second election condition and a third election condition according to the election information reported by each device in the control group, wherein the single-hop multicast of the optimal proxy node covers all other devices in the control group.
3. The group control method based on the narrow-band low-power wireless network according to claim 2, wherein the election multicast command further comprises an election timeout time;
the election multicast command is further configured to trigger each device in the control group to randomly and continuously send a preset number of multicast packets for testing to all other devices in the control group within the election timeout period according to the group address, and count the multicast packets received from all other devices within the election timeout period as the election information.
4. The group control method according to claim 2, wherein the election information includes a sender address of the multicast packet, a total number of times of sending the multicast packet through the sender address, and an average signal strength of the multicast packet corresponding to the sender address.
5. The group control method based on the narrow-band low-power wireless network according to claim 4, wherein the first election condition is to screen out the devices that can receive the multicast packet sent by most other devices;
the second election condition is that the device with the highest average number of times that the sent multicast packet is received by other devices is screened from the devices screened under the first election condition;
and the third election condition is that the equipment with the strongest average signal intensity of all the received multicast packets is screened from the equipment screened under the second election condition.
6. The group control method based on the narrowband low power consumption wireless network of claim 2, wherein the selecting a device from the control group as a best agent node through a preset election mechanism further comprises: recording the address of the optimal proxy node;
the sending the control message to the optimal proxy node in a unicast manner includes:
and sending the control message to the optimal proxy node in a unicast mode according to the address of the optimal proxy node, wherein the control message comprises a control command.
7. The group control method based on the narrow-band low-power wireless network as claimed in claim 6, wherein the method further comprises:
if the single-hop multicast of the optimal proxy node cannot cover all other devices in the control group, selecting a device as a secondary proxy node from all other devices in the control group except the optimal proxy node through the preset election mechanism, wherein the single-hop multicast of the optimal proxy node and the secondary proxy node covers all other devices in the control group, and the single-hop multicast of the optimal proxy node covers the secondary proxy node;
the control message is also used for forwarding the optimal proxy node to all other devices in the control group in a single-hop multicast manner, each device performs matching of the secondary proxy node, and if the matching is consistent, the control message is forwarded to all other devices in the control group in a single-hop multicast manner so as to cover the devices which cannot be covered by the optimal proxy node, and the control message is also used for controlling the optimal proxy node, the secondary proxy node and all other devices in the control group to analyze and execute corresponding command actions.
8. The group control method according to claim 7, wherein the method further comprises, after electing a device as a secondary proxy node from all other devices in the control group except the best proxy node through the predetermined election mechanism: recording the address of the secondary proxy node;
the control message further comprises an address of the secondary proxy node;
the matching of the secondary proxy node by each device comprises: and each device is matched according to the address of the secondary proxy node and the address of the device per se.
9. A group control system based on a narrow-band low-power wireless network, comprising a gateway and a plurality of devices in the narrow-band low-power wireless network, wherein the gateway is used for implementing the group control method based on the narrow-band low-power wireless network as claimed in any one of claims 1 to 8.
10. A computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, can implement the steps of the group control method based on narrowband low power consumption wireless networks according to any of claims 1 to 8.
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| CN116938672A (en) * | 2023-09-18 | 2023-10-24 | 中国电信股份有限公司 | Task model distribution method, device, computer equipment, medium and product |
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| CN116938672A (en) * | 2023-09-18 | 2023-10-24 | 中国电信股份有限公司 | Task model distribution method, device, computer equipment, medium and product |
| CN116938672B (en) * | 2023-09-18 | 2024-02-23 | 中国电信股份有限公司 | Task model distribution method, device, computer equipment, medium and product |
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