CN111512673B - Network node awakening method and equipment - Google Patents
Network node awakening method and equipment Download PDFInfo
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- CN111512673B CN111512673B CN201780097946.6A CN201780097946A CN111512673B CN 111512673 B CN111512673 B CN 111512673B CN 201780097946 A CN201780097946 A CN 201780097946A CN 111512673 B CN111512673 B CN 111512673B
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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
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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
Abstract
A method and a device for waking up a network node are provided, the method comprises: a network node sends a service request to gateway equipment, wherein the service request comprises the conditions of a channel where the network node is located and an adjacent channel of the channel where the network node is located; the network node receives a service response sent by the gateway equipment, wherein the service response comprises information of a wireless awakening channel determined by the gateway equipment for the network node according to the conditions of a channel where the network node is located and an adjacent channel of the channel where the network node is located; the network node enters a wireless wake-up channel indicated by the service response to sleep; and when the network node receives the wake-up signal sent by the gateway equipment, if the received wake-up signal is judged to be the signal for waking up the network node, the network node wakes up in the wireless wake-up channel and switches to a working channel.
Description
Technical Field
The present application relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for waking up a network node.
Background
With the rapid development of the internet of things, in environmental monitoring of forest in the field, monitoring in an unattended sensor network system, industrial environment, and the like, as shown in fig. 1, a large amount of equipment and instruments powered by batteries, i.e., network nodes in wireless communication, are required to be used, and in the application environment, the network nodes need to keep a long life cycle and a certain use sensitivity.
In the prior art, a hardware circuit design technology is adopted to wake up a network node, a wake-up channel of the network node in the hardware circuit design technology is a fixed channel, the interference degree of the fixed channel cannot be determined, when the environment where the fixed channel is located is poor or the number of network nodes using the fixed channel is large, the interference on the fixed channel is large, and since a gateway node must use the fixed channel, the sensitivity of the network node is also poor under the condition that the interference of the fixed channel is large.
In summary, how to improve the sensitivity of the network node is a problem that needs to be solved urgently at present.
Disclosure of Invention
The embodiment of the application provides a network node awakening method and device, which are used for solving the problem that the sensitivity of a network node is low in the prior art.
In a first aspect, the present application provides a method for waking up a network node, including: a network node sends a service request to gateway equipment, wherein the service request comprises the conditions of a channel where the network node is located and an adjacent channel of the channel where the network node is located; the gateway equipment determines a wireless awakening channel from the channel where the network node is located and the adjacent channel of the channel where the network node is located through statistical analysis of the conditions of the channel where the network node is located and the adjacent channel of the channel where the network node is located; the gateway device sends a service response to the network node, wherein the service response comprises the information of the wireless wake-up channel so as to indicate the network node to sleep on the wireless wake-up channel, and the network node receives the service response sent by the gateway device and enters the wireless wake-up channel indicated by the service response to sleep; the gateway device sends a wake-up signal to the network node after the network node enters the wireless wake-up channel dormancy, if the network node judges that the received wake-up signal is a signal for waking up the network node, the network node wakes up in the wireless wake-up channel and switches to a working channel, and after the network node confirms that the wake-up signal is a signal for waking up the network node, the gateway device also switches to the working channel after the network node wakes up from the wireless wake-up channel and switches to the working channel.
By the method, the network node sends the condition of the adjacent channel to the gateway equipment, so that the gateway equipment can determine the wireless awakening channel for the network node according to the channel where the network node is located and the condition of the adjacent channel of the located channel; therefore, the network node to the gateway equipment can be made to sleep and awaken on the wireless awakening channel determined according to the conditions of the channel where the network node is located and the adjacent channel of the channel where the network node is located, and the problem that the sensitivity of the network node is low due to the fact that the network node is made to sleep and awaken on the fixed channel can be avoided.
In one possible design, the method further includes: and when judging that the received wake-up signal is not a signal for waking up the network node, the network node continues to sleep on the wireless wake-up channel and listens the wake-up signal sent next time by the gateway equipment according to the information of the wake-up signal.
In one possible design, the network node may perform channel scanning on the adjacent channel in advance, acquire the condition of the adjacent channel, and then send a service request to the gateway device. By the method, the network node can acquire the condition of the adjacent channel and provide accurate data of the channel condition for the gateway equipment.
In one possible design, the gateway device may send the determined wireless wake-up channel to the network node by carrying the determined wireless wake-up channel in the contract negotiation parameters. In addition, the contract negotiation parameters may further include at least one of a wireless wake-up period, a sleep time offset, an operating channel, a wake-up listening time, a node internal logic number, a communication rate, and a contract aging period indicated to the network node.
By the method, the network node can clearly and definitely acquire the wireless wake-up channel.
In a possible design, the network node may shift left and right according to an internal logic address carried in the wake-up signal to complete fast addressing, so as to determine whether the received wake-up signal is a signal for waking up the network node. By the method, the network node can quickly confirm whether the wake-up signal is the wake-up signal for waking up the network node, and the wake-up speed of the network node can be improved.
In a possible design, when the network node does not receive the wake-up on the wireless channel indicated by the service response by the gateway device for hibernation, the network node may send a new service request to the gateway device again. By this method, the network node may determine a wake-on-air channel that is better suited for the network node.
In one possible design, further comprising: if the gateway device does not receive the second acknowledgement message and does not receive the acknowledgement message fed back by the network node after sending the wake-up signal for the set number of times, the gateway device shortens the period of sending the wake-up signal or increases the preamble length of the wake-up signal.
In a possible design, the gateway device may determine a usage frequency weight of each channel according to a received condition of an adjacent channel included in a service request sent by a plurality of network nodes, rank the channels according to the usage frequency weights from large to small, and select a channel ranked at the last as a wireless wakeup channel.
In a second aspect, the present application provides a network node, which includes a transceiver unit and a processing unit, where the transceiver unit and the processing unit may be implemented by hardware or by corresponding logic function modules. The transceiver unit and the processing unit may implement, through interworking, the method procedures performed by the network node in any one of the possible designs of the first aspect and the first aspect described above.
In a third aspect, the present application provides a gateway device, including: the device comprises a transceiving unit and a processing unit, wherein the transceiving unit and the processing unit can be realized by hardware or corresponding logic function modules. The transceiver unit and the processing unit may implement, through interworking, the method procedures performed by the gateway device in any one of the possible designs of the first aspect and the first aspect thereof.
In a fourth aspect, an embodiment of the present application further provides an apparatus, including a processor and a memory, where the memory is used to store a software program, and the processor is used to read the software program stored in the memory and implement the method provided by the first aspect, any design of the first aspect, the second aspect, or any design of the second aspect.
In a fifth aspect, this embodiment of the present application further provides a computer storage medium, where a software program is stored, and when the software program is read and executed by one or more processors, the software program may implement the first aspect, any design of the first aspect, the second aspect, or the method provided by any design of the second aspect.
In a sixth aspect, an embodiment of the present application further provides a chip, where the chip is connected to a memory, and is configured to read and execute a software program stored in the memory, so as to implement the first aspect or any design of the first aspect, or the method provided by the second aspect or any design of the second aspect.
Drawings
Fig. 1 is a schematic view of a monitoring environment according to an embodiment of the present disclosure;
fig. 2 is a flowchart of a method for waking up a network node according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a network node according to an embodiment of the present application;
fig. 4 is a schematic diagram of a gateway device according to an embodiment of the present application;
fig. 5 is a schematic diagram of a hardware structure according to an embodiment of the present disclosure.
Detailed Description
Embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The embodiment of the application provides a network node awakening method and device, which are used for solving the problem that the sensitivity of a network node is low in the prior art. The method and the device are based on the same inventive concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.
Hereinafter, some terms in the present application are explained to be understood by those skilled in the art.
A Network node may be referred to as a terminal node, a terminal device, an internet of things terminal, and the like, and the Network node may communicate with one or more Network devices through a Radio Access Network (RAN). The network node may be a mobile telephone (or so-called "cellular" telephone) or a computer with mobile terminals, etc., for example, the network node may also be a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device. The network node can also be internet of things equipment, such as a meter terminal, wearable equipment, logistics tracking, elevator pictures or satellite equipment and other internet of things equipment. The network node may also be a vehicle device, such as a vehicle mounted terminal, a Road Side Unit (RSU).
And the gateway device can be called as a coordinator, a router and the like.
And the wireless wake-up channel is used for enabling the network node to sleep on the channel in the non-working state and to be woken up on the channel.
An operating channel, a channel on which the network node is in an operating state.
And the wake-up signal is a signal for waking up the network node to a working state in a dormant state.
Plural means two or more.
In addition, it is to be understood that the terms first, second, etc. in the description of the present application are used for distinguishing between the descriptions and not necessarily for describing a sequential or chronological order.
In the prior art, a hardware circuit design technology is adopted to wake up a network node, for example, a wireless internet service provider is connected with a passive wake-up module of Tmote Sky, an output pin of the WISP is connected to a general input/output pin of the passive wake-up module, and when a micro control unit of the WISP outputs a signal of 1.8V, the voltage is 0.92V which is greater than the voltage required by external interrupt triggering of the passive wake-up module, so as to trigger the passive wake-up module. In the using process, noise between two devices can also cause false awakening of a passive awakening module, the MCU of the WISP has large calculation burden and large power consumption, and when a hardware circuit is adopted to awaken a network node, an awakening channel is a fixed channel, so that the sensitivity is poor.
The network node wake-up scheme provided by the present application is specifically described below with reference to the accompanying drawings.
Referring to fig. 2, a flowchart of a method for waking up a network node is provided in the present application. The method comprises the following steps:
s201, a network node sends a service request to a gateway device, wherein the service request comprises a current working channel of the network node and a channel condition of an adjacent channel of the current working channel. Specifically, the network node sends a service Request to the gateway device, that is, may start a Contract negotiation with the gateway device for wireless wake-up, where the service Request may also be referred to as a wireless wake-up service Request (WOR-on radio) -context-Request).
S202, the gateway device carries out statistical analysis on the conditions of adjacent channels of the working channel where the network node is located currently in the service request so as to determine the wireless wake-up channel of the network node.
Specifically, the gateway device receives service requests sent by a plurality of network nodes, performs statistical analysis on adjacent channel conditions of respective channels in which the plurality of nodes are located, may determine a suitable wireless wake-up channel for each network node, and further may carry information of the determined wireless wake-up channel in contract negotiation parameters sent to the network nodes, where a channel condition of one channel may refer to how many network nodes are working or sleeping on the channel.
For example, the gateway device determines, according to channel conditions of adjacent channels of a working channel where each network node is currently located, included in service requests sent by a plurality of network nodes, a use frequency weight sequence of each channel, for example, the use frequency weight sequence is arranged according to a sequence of weights from small to large, a first channel in the sequence, that is, a channel with the smallest weight, is an optimal channel, the optimal channel refers to a channel with the smallest number of network nodes that operate or sleep on the channel relative to other channels, and the optimal channel is an optimal wake-up channel. On the same wake-up channel, preferably, one network node is kept on the same wake-up channel, when the number of the network nodes exceeds the number of the channels, the optimal channel is used for ensuring that the interference of communication is reduced to the minimum, the optimal channel is dynamically selected, the interference of a wireless wake-up channel and a wireless working channel can be reduced, and the reliability of communication is improved.
The contract negotiation parameters may further include at least one of a wireless wakeup period (WOR-T), a sleep time offset (Toffset), a wireless wakeup channel (WOR-channel), a working channel (Work-channel), a wakeup listening time (WOR-listen), a node internal logic number (local address), a communication rate (data-rate), and a contract aging (contract-T), and may be issued in a form of a contract table.
S203, the gateway device sends a service response to the network node, where the service response may include information of a wireless wake-up channel, and the information of the wireless wake-up channel may be carried in a contract negotiation parameter in the service response.
S204, the network node configures and updates the network node according to the contract negotiation parameters included in the received service response and according to the contract negotiation parameters, namely configures and updates a wireless wakeup period, a sleep time offset, a wireless wakeup channel, a working channel, wakeup interception time, a node internal logic number, a communication rate and contract aging for the network node.
S205, the network node sends a first confirmation message to the gateway device, starts a timer corresponding to the wireless wakeup period, and enters a wireless wakeup channel specified by the contract negotiation parameters to sleep.
S206, the gateway equipment starts a timer and sends a wake-up signal to the network node at the set time in the timer, wherein the wake-up signal comprises an internal logic address of the network node to be woken up and the time interval for sending the wake-up signal next time.
When the network node receives the wake-up signal, the internal logic address carried by the wake-up signal is determined, and the wake-up signal is confirmed to be sent to the network node.
S207, the network node receives the wake-up signal sent by the gateway device in the set wake-up interception time, and sends a second confirmation message to the gateway device and switches to a working channel to work if the received wake-up signal is judged to be the signal for waking up the network node.
Specifically, the wake-up signal includes an internal logic address, and the network node performs left-right shift according to the internal logic address to complete fast addressing to determine whether the received wake-up signal is a signal for waking up the network node, that is, if the internal logic address is correct, the network node determines that the received wake-up signal is a signal for waking up the network node; if the internal logic address is incorrect, the network node judges that the received wake-up signal is not the signal for waking up the network node, and addresses by simple and rapid left-right shifting, so that the addressing efficiency can be improved, and the channel wake-up time is shortened. The set wake-up snooping time is less than the set time of the timer, and the internal logic address can be numbered by adopting a binary number counting.
For example, the internal logic address of the network node itself is 16 bits, specifically 0000111100001111, the internal logic address included in the wake-up signal is 1000011110000111, after the network node receives the wake-up signal, the internal logic address included in the wake-up signal is shifted to the left, that is, the last bit is shifted to the leftmost end, after the first shift, the shifted internal logic address is 0000111100001111, and the network node determines that the shifted internal logic address is the same as the internal logic address of itself, and determines that the wake-up signal is sent to itself. In this embodiment of the present application, the internal logic address included in the wake-up signal may also be shifted to the right, specifically, the shift to the left or the shift to the right is preset, and this application is not limited, and the internal logic address may also be 64 bits. Taking 16-bit internal logic addresses as an example, 16 different groups of internal logic addresses can be produced after shifting, and a wake-up message can wake up 16 network nodes at most.
And if the network node judges that the received wake-up signal is not the signal for waking up the network node, continuing to enter a dormant state, and intercepting the wake-up signal sent next time by the gateway equipment according to the information of the wake-up signal.
S208, the gateway equipment receives the second confirmation message sent by the network node, switches to the working channel and starts normal communication. If the gateway device does not receive the second acknowledgement message after sending the wake-up signal for the set number of times, the gateway device may shorten the time length of the timer or increase the length of the preamble of the wake-up signal, so as to ensure that the network node can receive the wake-up signal as much as possible within the set time (i.e., the wireless wake-up period) in the timer, thereby avoiding an increase in data delay due to the loss of the wake-up signal (WuS).
In the embodiment of the application, the network node sends the condition of the adjacent channel to the gateway device, so that the gateway device can determine the wireless wake-up channel for the network node according to the channel where the network node is located and the condition of the adjacent channel of the channel where the network node is located; therefore, the network node to the gateway equipment can be made to sleep and awaken on the wireless awakening channel determined according to the conditions of the channel where the network node is located and the adjacent channel of the channel where the network node is located, and the problem that the sensitivity of the network node is low due to the fact that the network node is made to sleep and awaken on the fixed channel can be avoided.
Before step S201, the network node may also obtain the condition of the adjacent channel through channel scanning, and in this embodiment, the network node may also obtain the condition of the adjacent channel through other manners, which is not limited in this application.
Before step S204, if the network node receives the service response but does not receive the contract negotiation parameter in the service response, the network node may send a new service request to the gateway device, and may repeat the above steps S201, S202, and S203 until a channel suitable for the network node to be used for dormancy wakeup is determined.
In one possible implementation manner, after the network node and the gateway device determine the contract negotiation parameter, the time T for the network node to go to sleep may be calculated according to the current time Tcurr, the sleep time offset Toffset, and the wireless wake-up period WOR-Twake-upThe calculation formula is as follows:
Twake-up＝(Toffset-Tcurr)modWOR-T
in one possible implementation, different network nodes may perform sleep and wake-on-listen operations on different channels.
In a possible implementation mode, the duty ratio of the wake-up time and the sleep time is designed, so that the message sending time is longer than the wake-up time, the message is shortest in a feasible range as much as possible, and the efficiency is highest.
In the following, the step S202 is described in detail by a specific embodiment, the performance of the channel may be determined whether the channel is a good channel by using a signal to noise ratio (SNR), a loss rate and a delay, and the SNR can be determined by using the SNR
And (6) performing calculation. Wherein the channel power PsCan be expressed as a plurality of singular values, noise power PnIs M of
Multiple, M is the mean of the noise power of the channel,
is the white noise power.
The average loss rate can be determined by
Denotes, τkIs the loss rate of the signal k, λkIs the average arrival rate of the signal k and λ is the average arrival rate of the overall system.
The integrated channel estimate may be formed from
Is expressed as m is the type of channel estimation parameter, QiIs a comprehensive evaluation index of the channel i, qm' is an effective evaluation value, p, of a channel of type m of a channel evaluation parametermThe channel evaluation parameter is the ratio of the channels with the type m of the channel evaluation parameter in the channel i comprehensive evaluation index, and N is the number of the channels.
By evaluating the channel with the above three parameters, Q can be derivedi(t)＝p0q0′(t)+p1q1′(t)+p2q2′(t)，p0+p1+p2＝1。q0′，q1′，q2' effective evaluation values, p, representing SNR, delay and loss rate, respectively0，p1，p2Is the ratio of each parameter in the composite evaluation value.
If the SNR value increases, the channel quality value also increases, so
Conversely, if the delay and loss rate increase, the channel quality decreases, so
Where α is the SNR increase ratio, b is the reduction, and finally integratedThe channel with the highest channel estimation index is considered as a good channel.
In the case of a good channel selection,
f (t +1) is the frequency value of the good channel selected by the system at the next instant, f0Is a lower limit of the communication frequency of the channel, and the weight of each channel can be allocated by
To give, wherein Qi' (t) is a channel estimation function, Qi' (t +1) is the channel prediction function, γ and 1- γ are the scaling coefficients of the channel estimate and channel prediction in the channel weights, η is the effectiveness of the channel prediction, the greater the η, the more accurate the prediction, and
in order to better reflect the trend degree of the good-quality channel in the effective range
Wherein x isiIs an evaluation value of the ith channel.
Based on the same inventive concept as the method embodiment, the present application further provides a schematic diagram of a network node, as shown in fig. 3, the network node includes a transceiver unit 301, configured to send a service request to a gateway device, where the service request includes a channel where the network node is located and a condition of an adjacent channel of the channel where the network node is located; and receiving a service response sent by the gateway device, wherein the service response comprises information of a wireless wake-up channel, and the service response comprises information of the wireless wake-up channel determined by the gateway device for the network node according to the conditions of the channel where the network node is located and the adjacent channel of the channel where the network node is located, and the wireless wake-up channel is a channel for dormancy determined by the network node according to the conditions of the channel where the network node is located and the adjacent channel of the channel where the network node is located. In one implementation, the information of the wireless wake-up channel may be carried in a contract negotiation parameter in a service response. A processing unit 302, configured to control the network node to enter a wireless wake-up channel indicated by the service response for sleeping; the transceiver unit 301 is further configured to receive a wake-up signal sent by the gateway device; the processing unit 302 is further configured to control the network node to wake up in the wireless wake-up channel and switch to a working channel to work when it is determined that the wake-up signal received by the transceiver unit is a signal for waking up the network node.
The embodiment of the application provides that the network node sends the condition of the adjacent channel to the gateway device, so that the gateway device can determine the wireless wake-up channel for the network node according to the channel where the network node is located and the condition of the adjacent channel of the channel where the network node is located; therefore, the network node to the gateway equipment can be made to sleep and awaken on the wireless awakening channel determined according to the conditions of the channel where the network node is located and the adjacent channel of the channel where the network node is located, and the problem that the sensitivity of the network node is low due to the fact that the network node is made to sleep and awaken on the fixed channel can be avoided.
In a possible implementation manner, the processing unit 302 is further configured to control the network node to continue to sleep on the wireless wake-up channel when it is determined that the received wake-up signal is not a signal for waking up the network node, and control the transceiver unit to listen to a wake-up signal sent next time by the gateway device according to information of the wake-up signal.
In a possible implementation manner, the processing unit 302 is further configured to control the transceiver unit to perform channel scanning on the adjacent channel to acquire the adjacent channel before the transceiver unit sends a service request to the gateway device.
In a possible implementation manner, when determining that the wake-up signal received by the transceiver unit is a signal for waking up the network node, the processing unit 302 is specifically configured to perform left-right shifting according to an internal logic address carried in the wake-up signal to complete fast addressing, so as to determine whether the received wake-up signal is a signal for waking up the network node.
In a possible implementation manner, the processing unit 302 is further configured to control the transceiver unit to send a new service request to the gateway device again when the network node does not receive the wireless wake-up channel indicated by the service response by the gateway device to perform dormancy.
Based on the same inventive concept as the method embodiment, the present application further provides a schematic diagram of a gateway device, as shown in fig. 4, including a transceiver unit 401, configured to receive a service request sent by a network node, where the service request includes a channel where the network node is located and a situation of an adjacent channel of the channel where the network node is located; a processing unit 402, configured to determine a wireless wake-up channel from a channel in which the network node is located and an adjacent channel of the channel in which the network node is located by performing statistical analysis on conditions of the channel in which the network node is located and the adjacent channel of the channel in which the network node is located; the receiving and sending unit is controlled to send a service response to the network node, and the service response comprises the information of the wireless wake-up channel so as to indicate the network node to sleep on the wireless wake-up channel; and after the network node enters the wireless wake-up channel dormancy, controlling the transceiver unit to send a wake-up signal to the network node, and after the network node confirms that the wake-up signal is a signal for waking up the network node, switching to a working channel from the wireless wake-up channel wake-up to the working channel.
In a possible implementation manner, the transceiver unit is further configured to shorten a period for sending the wake-up signal or increase a preamble length of the wake-up signal when the acknowledgment message fed back by the network node is not received after the wake-up signal is sent for the set number of times.
In a possible implementation manner, when determining, through statistical analysis, a wireless wake-up channel in a channel where the network node is located and an adjacent channel of the channel where the network node is located, the processing unit is specifically configured to: determining the use frequency weight of each channel according to the condition of adjacent channels included in the received service requests sent by the plurality of network nodes, sequencing the channels from large to small according to the use frequency weight, and selecting the channel sequenced at the last as a wireless wakeup channel.
In a possible implementation manner, the transceiver unit is further configured to: and receiving a new service request retransmitted by the network node, wherein the new service request is transmitted when the network node does not accept the dormancy on the wireless wake-up channel indicated by the gateway equipment through the service response.
The division of the modules in the embodiments of the present application is schematic, and only one logical function division is provided, and in actual implementation, there may be another division manner, and in addition, each functional module in each embodiment of the present application may be integrated in one processor, may also exist alone physically, or may also be integrated in one module by two or more modules. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
When the integrated module may be implemented in the form of hardware, as shown in fig. 5, the network node or the gateway device may include a processor 501, and the hardware of the entity corresponding to the processing unit 302 or 402 may be the processor 501. A transceiver 504 may be further included, and the hardware of the entity corresponding to the transceiver unit 301 or 401 may be the transceiver 504. The processor 501 may be a Central Processing Unit (CPU), a digital processing module, or the like. The network node or gateway device further comprises: a memory 502 for storing programs executed by the processor 501. The memory 502 may be a nonvolatile memory such as a hard disk (HDD) or a solid-state drive (SSD), and may also be a volatile memory such as a random-access memory (RAM). The memory 502 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such.
The processor 501 is configured to execute the program code stored in the memory 502, and specifically call up the program instruction stored in the memory 502.
The specific connection medium between the processor 501 and the memory 502 is not limited in the embodiments of the present application. In the embodiment of the present application, the processor 501 and the memory 502 are connected by the bus 503 in fig. 5, the bus is represented by a thick line in fig. 5, and the connection manner between other components is merely for illustrative purposes and is not limited thereto. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 5, but this is not intended to represent only one bus or type of bus.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.
Claims (20)
1. A method for waking up a network node, comprising:
a network node sends a service request to gateway equipment, wherein the service request comprises the conditions of a channel where the network node is located and an adjacent channel of the channel where the network node is located;
the network node receives a service response sent by the gateway equipment, wherein the service response comprises information of a wireless awakening channel determined by the gateway equipment for the network node according to the conditions of a channel where the network node is located and an adjacent channel of the channel where the network node is located;
the network node enters a wireless wake-up channel indicated by the service response to sleep;
and when the network node receives the wake-up signal sent by the gateway equipment, if the received wake-up signal is judged to be the signal for waking up the network node, the network node wakes up in the wireless wake-up channel and switches to a working channel.
2. The method of claim 1, wherein the method further comprises:
and when judging that the received wake-up signal is not a signal for waking up the network node, the network node continues to sleep on the wireless wake-up channel and listens the wake-up signal sent next time by the gateway equipment according to the information of the wake-up signal.
3. The method of claim 1, wherein prior to the network node sending the service request to the gateway device, further comprising:
and the network node scans the channels of the adjacent channels to acquire the conditions of the adjacent channels.
4. The method of claim 1, wherein the network node determining that the received wake-up signal is a signal to wake up the network node comprises:
and the network node performs left-right shift according to the internal logic address carried in the wake-up signal to finish quick addressing so as to confirm whether the received wake-up signal is a signal for waking up the network node.
5. The method of claim 1, wherein the method further comprises:
the network node does not receive the wireless wake-up channel indicated by the service response of the gateway equipment to sleep;
the network node resends the new service request to the gateway device.
6. A method for waking up a network node, comprising:
the method comprises the steps that gateway equipment receives a service request sent by a network node, wherein the service request comprises the conditions of a channel where the network node is located and an adjacent channel of the channel where the network node is located;
the gateway equipment determines a wireless awakening channel from the channel where the network node is located and the adjacent channel of the channel where the network node is located by carrying out statistical analysis on the conditions of the channel where the network node is located and the adjacent channel of the channel where the network node is located;
the gateway equipment sends a service response to the network node, wherein the service response comprises the information of the wireless wake-up channel so as to indicate that the network node sleeps on the wireless wake-up channel;
and the gateway equipment sends a wake-up signal to the network node after the network node enters the wireless wake-up channel dormancy, and switches to a working channel after the network node wakes up from the wireless wake-up channel and switches to the working channel after confirming that the wake-up signal is a signal for waking up the network node.
7. The method of claim 6, further comprising:
if the gateway device does not receive the confirmation message fed back by the network node after sending the wake-up signal for the set number of times, the period for sending the wake-up signal is shortened or the length of the preamble of the wake-up signal is increased.
8. The method of claim 6, wherein the determining, by the gateway device through statistical analysis, a wireless wake-up channel from the channel where the network node is located and the adjacent channel to the channel where the network node is located comprises:
the gateway device determines the use frequency weight of each channel according to the condition of adjacent channels included in the service requests sent by the plurality of network nodes, sorts the channels from large to small according to the use frequency weight, and selects the channel sorted at the last as a wireless wake-up channel.
9. The method of claim 7, wherein the method further comprises:
and the gateway equipment receives a new service request retransmitted by the network node, wherein the new service request is transmitted when the network node does not receive the dormancy on the wireless wake-up channel indicated by the gateway equipment through the service response.
10. A network node, comprising:
a receiving and sending unit, configured to send a service request to a gateway device, where the service request includes a channel where the network node is located and a condition of an adjacent channel of the channel where the network node is located; receiving a service response sent by the gateway device, wherein the service response comprises information of a wireless wake-up channel determined by the gateway device for the network node according to the conditions of the channel where the network node is located and the adjacent channel of the channel where the network node is located;
a processing unit, configured to control the network node to enter a wireless wake-up channel indicated by the service response for sleeping;
the transceiver unit is further configured to receive a wake-up signal sent by the gateway device;
the processing unit is further configured to control the network node to wake up in the wireless wake-up channel and switch to a working channel to work when it is determined that the wake-up signal received by the transceiver unit is a signal for waking up the network node.
11. The network node according to claim 10, wherein the processing unit is further configured to, when determining that the received wake-up signal is not a signal for waking up the network node, control the network node to continue to sleep on the wireless wake-up channel, and control the transceiver unit to listen to a wake-up signal sent next time by the gateway device according to information of the wake-up signal.
12. The network node according to claim 10, wherein the processing unit is further configured to control the transceiver unit to perform channel scanning on the adjacent channel to acquire the adjacent channel before the transceiver unit sends a service request to a gateway device.
13. The network node according to claim 10, wherein the processing unit, when determining that the wake-up signal received by the transceiver unit is a signal for waking up the network node, is specifically configured to perform left-right shifting according to an internal logic address carried in the wake-up signal to complete fast addressing, so as to determine whether the received wake-up signal is a signal for waking up the network node.
14. The network node according to claim 10, wherein the processing unit is further configured to control the transceiver unit to resend a new service request to the gateway device when the network node does not receive the dormancy on the wake-on-air channel indicated by the service response by the gateway device.
15. A gateway device, comprising:
the receiving and sending unit is used for receiving a service request sent by a network node, wherein the service request comprises the conditions of a channel where the network node is located and an adjacent channel of the channel where the network node is located;
the processing unit is used for determining a wireless awakening channel from the channel where the network node is located and the adjacent channel of the channel where the network node is located by carrying out statistical analysis on the conditions of the channel where the network node is located and the adjacent channel of the channel where the network node is located; the receiving and sending unit is controlled to send a service response to the network node, and the service response comprises the information of the wireless wake-up channel so as to indicate the network node to sleep on the wireless wake-up channel; and after the network node enters the wireless wake-up channel dormancy, controlling the transceiver unit to send a wake-up signal to the network node, and after the network node confirms that the wake-up signal is a signal for waking up the network node, switching to a working channel from the wireless wake-up channel wake-up to the working channel.
16. The gateway device of claim 15, wherein the transceiver unit is further configured to shorten a period for sending the wake-up signal or increase a preamble length of the wake-up signal when an acknowledgement message fed back by the network node is not received after sending the wake-up signal for a set number of times.
17. The gateway device of claim 15, wherein the processing unit, through statistical analysis, when determining the wireless wake-up channel from the channel where the network node is located and the adjacent channel of the channel where the network node is located, is specifically configured to:
determining the use frequency weight of each channel according to the condition of adjacent channels included in the received service requests sent by the plurality of network nodes, sequencing the channels from large to small according to the use frequency weight, and selecting the channel sequenced at the last as a wireless wakeup channel.
18. The gateway device of claim 15, wherein the transceiving unit is further to:
and receiving a new service request retransmitted by the network node, wherein the new service request is transmitted when the network node does not accept the dormancy on the wireless wake-up channel indicated by the gateway equipment through the service response.
19. An apparatus comprising a processor, a memory, and a transceiver,
the memory is used for storing a software program;
the processor is used for calling and executing the software program stored in the memory, and transmitting and receiving data through the transceiver to realize the method of any one of claims 1 to 9.
20. A computer-readable medium having stored thereon computer instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/119452 WO2019127230A1 (en) | 2017-12-28 | 2017-12-28 | Network node wake-up method and device |
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| CN111512673B true CN111512673B (en) | 2021-06-29 |
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| CN112888050B (en) * | 2019-11-30 | 2022-09-09 | 华为技术有限公司 | Equipment energy saving method and device and computer storage medium |
| CN112383953A (en) * | 2020-12-08 | 2021-02-19 | 北京必创科技股份有限公司 | Portable networking assisting device and wireless sensor networking system |
| CN114339973A (en) * | 2021-12-30 | 2022-04-12 | 苏州景昱医疗器械有限公司 | Wireless communication system, method, computer device and storage medium |
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| CN101807937A (en) * | 2009-02-18 | 2010-08-18 | 深圳鼎识科技有限公司 | Method for communication between vehicular radio-frequency identification card and wireless base station |
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| CN107360619A (en) * | 2016-05-10 | 2017-11-17 | 中兴通讯股份有限公司 | Low power receiver for radio communication |
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| US8588119B2 (en) * | 2010-01-21 | 2013-11-19 | Robert Bosch Gmbh | Asynchronous low-power multi-channel media access control |
| US20160183187A1 (en) * | 2014-12-22 | 2016-06-23 | Intel Corporation | Adjacent channel interference mitigation for low-power wake-up radio |
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- 2017-12-28 WO PCT/CN2017/119452 patent/WO2019127230A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101807937A (en) * | 2009-02-18 | 2010-08-18 | 深圳鼎识科技有限公司 | Method for communication between vehicular radio-frequency identification card and wireless base station |
| CN103782486A (en) * | 2011-07-07 | 2014-05-07 | 三星电子株式会社 | Wireless power transmitting and charging system, and method for controlling communication and power in the wireless power transmitting and charging system |
| CN107360619A (en) * | 2016-05-10 | 2017-11-17 | 中兴通讯股份有限公司 | Low power receiver for radio communication |
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