CN111328058A - Bluetooth Mesh low-power-consumption node dynamic awakening method - Google Patents
Bluetooth Mesh low-power-consumption node dynamic awakening method Download PDFInfo
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- CN111328058A CN111328058A CN202010115344.2A CN202010115344A CN111328058A CN 111328058 A CN111328058 A CN 111328058A CN 202010115344 A CN202010115344 A CN 202010115344A CN 111328058 A CN111328058 A CN 111328058A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/46—TPC being performed in particular situations in multi hop networks, e.g. wireless relay networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a dynamic awakening method of a Bluetooth Mesh low-power consumption node, which mainly comprises the following two aspects: firstly, a data packet sent by a friend node to a low power consumption node (LPN) carries synchronous clock information incidentally, and the low power consumption node (LPN) carries out clock synchronization every time the low power consumption node (LPN) receives data; the friend node can synchronously update the dynamic awakening time of the low-power-consumption node, and can send data to the low-power-consumption node without sending an inquiry data packet by the low-power-consumption node; secondly, the low-power consumption node is in an awakening state; in the awakening period, if new information is received, processing is carried out, and then awakening time is gradually reduced; if no new information is received, the wake-up time is gradually increased. The invention can synchronously update the clocks of the low power consumption node (LPN) and the friendly node and the dynamic awakening time of the low power consumption node, reduce the sending of the data packet of the low power consumption node and further reduce the power consumption in the Bluetooth Mesh networking process.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a Bluetooth Mesh low-power-consumption node awakening method.
Background
In a wireless Mesh network, any wireless device node can simultaneously act as an AP and a router, each node in the network can send and receive signals, and each node can directly communicate with one or more peer nodes.
The wireless Mesh network structure has the following great benefits: if the nearest AP is congested due to excessive traffic, the data may be automatically rerouted to a neighboring node with a smaller traffic volume for transmission. And so on, the data packet can be further routed to the next node closest to the data packet for transmission according to the situation of the network until the final destination is reached.
Relation of bluetooth low energy and bluetooth Mesh: bluetooth Mesh is a network technology, bluetooth Mesh networks rely on bluetooth low energy, which is a wireless communication protocol stack used by bluetooth Mesh.
Bluetooth low energy BLE mode of operation mainly falls into 3: broadcast, scan, and connect. In order to ensure the accuracy of data transmission, there are two improved schemes: firstly, the scanning window time is increased, so that the scanning coverage rate is larger; secondly, setting the broadcast interval to be smaller than the time of the scanning window, so that the broadcast data must be in the time period of the scanning window. However, both of these solutions have drawbacks. The scan time is too long or the broadcast interval is too short, so that the wake-up time is increased, and the BLE power consumption is increased; the BLE devices of the connected communication need to maintain connection at regular time, and the reduction of the connection interval and the increase of the number of the connected devices both result in the increase of BLE connection events, thereby resulting in the increase of BEL power consumption.
The invention aims to provide a dynamic awakening method for a Bluetooth Mesh low-power-consumption node. When needed, the low power consumption node (LPN) can be dynamically changed from the dormant state to the response state, establish network connection with the friend node, and perform the process of data transmission and reception. And after the data transmission is finished, the low power consumption node (LPN) automatically enters a dormant state. Therefore, data transmission is achieved, and online scanning is not required forever, so that power consumption of the nodes is saved.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to overcome the defects of the prior art and provides a dynamic awakening method of a Bluetooth Mesh low-power-consumption node, so that the power consumption in the Bluetooth Mesh networking process is further reduced.
The technical scheme is as follows: in order to achieve the purpose, the technical method provided by the invention comprises the following steps:
a dynamic awakening method for a Bluetooth Mesh low-power-consumption node comprises the following steps:
s101: in a Bluetooth Mesh networking system, a user sends an operation instruction to the system from a control end according to the requirement of the user;
s102: the system receives the instruction and sends the instruction to the friend node;
s103: the friend node temporarily stores the instruction received from the system;
s104: the friend node establishes a friendship relationship with the LPN and establishes a data transmission channel;
s105: after the synchronous clock and the awakening time are updated, the friend node sends data information to the LPN from the awakening time, wherein the data information comprises a command to be processed, the synchronous clock, a count value N and the like;
s106: the friend node and the LPN update a synchronous clock;
s107: the LPN determines whether data is received, and if the LPN does not receive data, the step S108 is skipped, and if the LPN receives data, the step S109 is skipped;
s108: the LPN judges whether the own dormancy time is not less than the longest dormancy time, if the own dormancy time of the LPN is less than the longest dormancy time, the step S1081 is skipped; if the own sleep time of the LPN is not less than the longest sleep time, skipping to the step S1082;
the step S1081 is: the sleep time of the LPN is increased by 2 times of the existing sleep time, that is, the existing sleep time is multiplied by 2, and a counting function N +1 is executed, where an initial value N is 0; skipping to step S113;
the step S1082 is: the LPN keeps the longest dormancy time, and the step S113 is skipped;
s109: receiving and processing information, and then synchronizing time between the LPN and the system;
s110: the LPN judges whether the own dormancy time is not more than the shortest dormancy time, if the own dormancy time of the LPN is more than the shortest dormancy time, the step S1101 is jumped to; if the own sleep time of the LPN is not more than the shortest sleep time, skipping to the step S1102;
the step S1101 is: the sleep time of the LPN is reduced to 50% of the existing sleep time, i.e., the existing sleep time is multiplied by 0.5; executing a counting function N-1, wherein an initial value N is 0; skipping to step S111;
the step S1102 is: the LPN maintains the shortest sleep time;
s111: the LPN records the self residual electric quantity;
s112: the LPN sends data information to the friend node;
s113: judging whether the friend node in the wake-up period receives data, if not, skipping to step S1131, and if so, skipping to step S1132;
the step S1131 is: adding 1 to a counting value N at a friend node, and when the maximum value N is reached to be 4, keeping the maximum value; skipping to step S105, and starting the next round of processing;
the step S1132 is: the counting value N at the friend node is reduced by 1, and the minimum value is kept when the minimum value N is 0; the process skips to step S105, and starts the next round of processing.
Further, the bluetooth Mesh networking system in step S101 is composed of a plurality of users, a system background, a plurality of relay gateway nodes, a plurality of friend nodes, and a plurality of low power consumption nodes, and has functions of sending, receiving, and information processing, and includes the following steps:
s21: a user sends an operation instruction to a system background from a control end according to the self requirement; the user side also receives information from the system background;
s22: the system background receives an instruction from a user and sends the instruction to the relay gateway node; the relay gateway node feeds back to the system background according to the instruction sending result;
s23: the relay gateway node receives an instruction from a system background and sends the instruction to the friend node; the friend node feeds back to the relay gateway node according to the instruction sending result;
s24: and the friend node receives the instruction, establishes the friendship relationship with the low power consumption node (LPN), and then sends a data packet to the low power consumption node (LPN). The data information comprises a command to be processed, a synchronous clock, a count value N and the like; receiving processing-completed data information from a low power consumption node (LPN);
s25: the low power consumption node (LPN) performs clock synchronization by means of the received data packet, and synchronizes a wakeup period by means of a count value; and when the LPN awakening time is up, receiving data from the friend node, and after the data is processed, recording a count value by a low power consumption node (LPN) and feeding back the count value to the friend node to synchronously update an awakening period.
Further, the initial value N in step S1081 and step S1101 is 0, if the LPN receives information, N +1 counting is performed, if the LPN does not receive information, N-1 counting is performed, the value range of N is 0 or more and N or less than 4, the sleep time before the LPN determination of whether information is present is T (unit: second), and the LPN initial state sleep time is the shortest sleep time of 0.1 second, the sleep time of the LPN before the completion of the power recording operation is 0.1 × 2N(s)。
Further, the system has the functions of sending, receiving and information processing, and the specific functions are as follows:
a: in the sending aspect, after the user sends the instruction, the user information is processed through a system background, and then the information is sent to the relay gateway node and the friend node, and finally reaches the low power consumption node (LPN);
b: in the aspect of receiving, the networking system mainly comprises a user, a system background, a relay gateway node, a friend node and a low power consumption node (LPN); when data is transmitted among all system members, after the lower-layer system member receives the data of the upper-layer system member, clock synchronization and awakening period updating are carried out by means of the data packet and the count value.
Has the advantages that: the invention does not need the low-power consumption node to scan whether the channel information exists or not for a long time, increases or reduces the dormancy time through the dynamic window according to the existence of the previous hop information, and improves the working efficiency in the working time, so the invention has small self power consumption and feedback overhead and low algorithm complexity, and is suitable for further reducing the power consumption of the low-power consumption Bluetooth Mesh network.
Drawings
Fig. 1 is a schematic flow chart of a dynamic wake-up method for a bluetooth Mesh low-power consumption node according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a bluetooth Mesh networking system and timing sequences of a receive delay and a receive window 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 so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention will be more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.
Fig. 1 shows a dynamic wake-up method for a bluetooth Mesh low-power consumption node, which includes the following steps:
s101: in a Bluetooth Mesh networking system, a user sends an operation instruction to the system from a control end according to the requirement of the user;
s102: the system receives the instruction and sends the instruction to the friend node;
s103: the friend node temporarily stores the instruction received from the system;
s104: the friend node establishes a friendship relationship with the LPN and establishes a data transmission channel;
s105: after the synchronous clock and the awakening time are updated, the friend node sends data information to the LPN from the awakening time, wherein the data information comprises a command to be processed, the synchronous clock, a count value N and the like;
s106: the friend node and the LPN update a synchronous clock;
s107: the LPN determines whether data is received, and if the LPN does not receive data, the step S108 is skipped, and if the LPN receives data, the step S109 is skipped;
s108: the LPN judges whether the own dormancy time is not less than the longest dormancy time, if the own dormancy time of the LPN is less than the longest dormancy time, the step S1081 is skipped; if the own sleep time of the LPN is not less than the longest sleep time, skipping to the step S1082;
the step S1081 is: the sleep time of the LPN is increased by 2 times of the existing sleep time, that is, the existing sleep time is multiplied by 2, and a counting function N +1 is executed, where an initial value N is 0; skipping to step S113;
the step S1082 is: the LPN keeps the longest dormancy time, and the step S113 is skipped;
s109: receiving and processing information, and then synchronizing time between the LPN and the system;
s110: the LPN judges whether the own dormancy time is not more than the shortest dormancy time, if the own dormancy time of the LPN is more than the shortest dormancy time, the step S1101 is jumped to; if the own sleep time of the LPN is not more than the shortest sleep time, skipping to the step S1102;
the step S1101 is: the sleep time of the LPN is reduced to 50% of the existing sleep time, i.e., the existing sleep time is multiplied by 0.5; executing a counting function N-1, wherein an initial value N is 0; skipping to step S111;
the step S1102 is: the LPN maintains the shortest sleep time;
s111: the LPN records the self residual electric quantity;
s112: the LPN sends data information to the friend node;
s113: judging whether the friend node in the wake-up period receives data, if not, skipping to step S1131, and if so, skipping to step S1132;
the step S1131 is: adding 1 to a counting value N at a friend node, and when the maximum value N is reached to be 4, keeping the maximum value; skipping to step S105, and starting the next round of processing;
the step S1132 is: the counting value N at the friend node is reduced by 1, and the minimum value is kept when the minimum value N is 0; the process skips to step S105, and starts the next round of processing.
Wherein, the initial value N in step S1081 and step S1101 is 0, if the LPN receives information, N +1 counting is performed, if the LPN does not receive information, N-1 counting is performed, the value range of N is 0 or more and N or less than 4, the sleep time before the LPN determination of whether information is present is T (unit: second), and the LPN initial state sleep time is the shortest sleep time of 0.1 second, the sleep time of the LPN before the LPN performs one power recording operation is 0.1 × 2N(s)。
The system has the functions of sending, receiving and information processing, and the specific functions are as follows:
a: in the sending aspect, after the user sends the instruction, the user information is processed through a system background, and then the information is sent to the relay gateway node and the friend node, and finally reaches the low power consumption node (LPN);
b: in the aspect of receiving, the networking system mainly comprises a user, a system background, a relay gateway node, a friend node and a low power consumption node (LPN); when data is transmitted among all system members, after the lower-layer system member receives the data of the upper-layer system member, clock synchronization and awakening period updating are carried out by means of the data packet and the count value.
Fig. 2 shows a bluetooth Mesh networking system, which includes the following steps:
s21: a user sends an operation instruction to a system background from a control end according to the self requirement; the user side also receives information from the system background;
s22: the system background receives an instruction from a user and sends the instruction to the relay gateway node; the relay gateway node feeds back to the system background according to the instruction sending result;
s23: the relay gateway node receives an instruction from a system background and sends the instruction to the friend node; the friend node feeds back to the relay gateway node according to the instruction sending result;
s24: and the friend node receives the instruction, establishes the friendship relationship with the low power consumption node (LPN), and then sends a data packet to the low power consumption node (LPN). The data information comprises a command to be processed, a synchronous clock, a count value N and the like; receiving processing-completed data information from a low power consumption node (LPN);
s25: the low power consumption node (LPN) performs clock synchronization by means of the received data packet, and synchronizes a wakeup period by means of a count value; and when the LPN awakening time is up, receiving data from the friend node, and after the data is processed, recording a count value by a low power consumption node (LPN) and feeding back the count value to the friend node to synchronously update an awakening period.
According to the dynamic awakening method of the Bluetooth Mesh low-power-consumption node shown in the figure 1, a design example is provided. The shortest sleep time of a low power consumption node (LPN) is set to be 0.1 second, and the longest sleep time is set to be 2 seconds. If the LPN has information to receive, the sleep time is reduced in steps by the LPN, and each time the sleep time is reduced to 50% of the existing sleep time, namely the existing sleep time is multiplied by 0.5, the maximum sleep time can be reduced to the minimum sleep time from the longest sleep time after 5 times; if the LPN has no information to receive, the LPN increases the sleep time in steps, each time the sleep time is increased by 2 times of the existing sleep time, that is, the existing sleep time is multiplied by 2, the minimum sleep time can be increased to the maximum sleep time after 5 times at most.
The description and practice of the disclosure herein will be readily apparent to those skilled in the art from consideration of the specification and understanding, and may be modified and modified without departing from the principles of the disclosure. Therefore, modifications or improvements made without departing from the spirit of the invention should also be considered as the protection scope of the invention.
Claims (4)
1. A dynamic awakening method for a Bluetooth Mesh low-power consumption node is characterized by comprising the following steps:
s101: in a Bluetooth Mesh networking system, a user sends an operation instruction to the system from a control end according to the requirement of the user;
s102: the system receives the instruction and sends the instruction to the friend node;
s103: the friend node temporarily stores the instruction received from the system;
s104: the friend node establishes a friendship relationship with the LPN and establishes a data transmission channel;
s105: after the synchronous clock and the awakening time are updated, the friend node sends data information to the LPN from the awakening time, wherein the data information comprises a command to be processed, the synchronous clock, a count value N and the like;
s106: the friend node and the LPN update a synchronous clock;
s107: the LPN determines whether data is received, and if the LPN does not receive data, the step S108 is skipped, and if the LPN receives data, the step S109 is skipped;
s108: the LPN judges whether the own dormancy time is not less than the longest dormancy time, if the own dormancy time of the LPN is less than the longest dormancy time, the step S1081 is skipped; if the own sleep time of the LPN is not less than the longest sleep time, skipping to the step S1082;
the step S1081 is: the sleep time of the LPN is increased by 2 times of the existing sleep time, that is, the existing sleep time is multiplied by 2, and a counting function N +1 is executed, where an initial value N is 0; skipping to step S113;
the step S1082 is: the LPN keeps the longest dormancy time, and the step S113 is skipped;
s109: receiving and processing information, and then synchronizing time between the LPN and the system;
s110: the LPN judges whether the own dormancy time is not more than the shortest dormancy time, if the own dormancy time of the LPN is more than the shortest dormancy time, the step S1101 is jumped to; if the own sleep time of the LPN is not more than the shortest sleep time, skipping to the step S1102;
the step S1101 is: the sleep time of the LPN is reduced to 50% of the existing sleep time, i.e., the existing sleep time is multiplied by 0.5; executing a counting function N-1, wherein an initial value N is 0; skipping to step S111;
the step S1102 is: the LPN maintains the shortest sleep time;
s111: the LPN records the self residual electric quantity;
s112: the LPN sends data information to the friend node;
s113: judging whether the friend node in the wake-up period receives data, if not, skipping to step S1131, and if so, skipping to step S1132;
the step S1131 is: adding 1 to a counting value N at a friend node, and when the maximum value N is reached to be 4, keeping the maximum value; skipping to step S105, and starting the next round of processing;
the step S1132 is: the counting value N at the friend node is reduced by 1, and the minimum value is kept when the minimum value N is 0; the process skips to step S105, and starts the next round of processing.
2. The bluetooth Mesh low-power consumption node dynamic wake-up method according to claim 1, characterized in that: the bluetooth Mesh networking system in step S101 is composed of a plurality of users, a system background, a plurality of relay gateway nodes, a plurality of friend nodes, and a plurality of low power consumption nodes, and has functions of sending, receiving, and information processing, and includes the following steps:
s21: a user sends an operation instruction to a system background from a control end according to the self requirement; the user side also receives information from the system background;
s22: the system background receives an instruction from a user and sends the instruction to the relay gateway node; the relay gateway node feeds back to the system background according to the instruction sending result;
s23: the relay gateway node receives an instruction from a system background and sends the instruction to the friend node; the friend node feeds back to the relay gateway node according to the instruction sending result;
s24: and the friend node receives the instruction, establishes the friendship relationship with the low power consumption node (LPN), and then sends a data packet to the low power consumption node (LPN). The data information comprises a command to be processed, a synchronous clock, a count value N and the like; receiving processing-completed data information from a low power consumption node (LPN);
s25: the low power consumption node (LPN) performs clock synchronization by means of the received data packet, and synchronizes a wakeup period by means of a count value; and when the LPN awakening time is up, receiving data from the friend node, and after the data is processed, recording a count value by a low power consumption node (LPN) and feeding back the count value to the friend node to synchronously update an awakening period.
3. The bluetooth Mesh low-power consumption node dynamic wake-up method according to claim 1, characterized in that: the initial value N in step S1081 and step S1101 is equal to 0, if the LPN receives information, counting is performed by N +1, and if the LPN does not receive information, counting is performed by N-1, where a value range of N is 0 or more and N is 4 or less; if the sleep time before the LPN has the information is determined to be T (unit: second), and the sleep time of the LPN in the initial state is 0.1 second, the sleep time of the LPN before the LPN performs one power recording operation is determined to be T (unit: second)
T＝0.1×2N(s)。
4. The bluetooth Mesh low-power consumption node dynamic wake-up method according to claim 2, characterized in that: the system has the functions of sending, receiving and information processing, and the specific functions are as follows:
a: in the sending aspect, after the user sends the instruction, the user information is processed through a system background, and then the information is sent to the relay gateway node and the friend node, and finally reaches the low power consumption node (LPN);
b: in the aspect of receiving, the networking system mainly comprises a user, a system background, a relay gateway node, a friend node and a low power consumption node (LPN); when data is transmitted among all system members, after the lower-layer system member receives the data of the upper-layer system member, clock synchronization and awakening period updating are carried out by means of the data packet and the count value.
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| CN116456440A (en) * | 2023-06-14 | 2023-07-18 | 此芯科技(上海)有限公司 | Wi-Fi hotspot management method and device, storage medium and electronic equipment |
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