CN106937368A - The secondary wake/sleep method of low power loss communication node, node and system - Google Patents
The secondary wake/sleep method of low power loss communication node, node and system Download PDFInfo
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- 238000004891 communication Methods 0.000 title claims abstract description 91
- 230000007958 sleep Effects 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000005059 dormancy Effects 0.000 claims abstract description 60
- 230000002618 waking effect Effects 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 230000004622 sleep time Effects 0.000 claims description 12
- 230000003247 decreasing effect Effects 0.000 claims description 5
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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
- H04W52/02—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
- H04W52/0241—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where no transmission is received, e.g. out of range of the transmitter
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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 present invention relates to a kind of secondary wake/sleep method of low power loss communication node, node and system, Section Point receives n-th wake-up chip segment in the packet of first node transmission, n is positive integer, packet includes waking up code and positioned at the communication data for waking up code end, wake up code and include m continuous wake-up chip segment, m is positive integer；Section Point wakes up chip segment and calculates time interval Δ T required when current time range communication data reaches according to n-th for receiving；Section Point with current time be a dormancy time point, enter a dormancy by dormancy time length of time interval；At the end of a dormancy, the communication data for just reaching is waken up and received immediately, and secondary dormancy is gone successively to after communication data has been received, until the wakeup time point in next wake/sleep cycle wakes up again when reaching.The present invention can avoid the lasting power consumption penalty for receiving and waking up code and cause, and reach reduction power consumption, improve the purpose of battery.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a low-power-consumption communication node secondary awakening/sleeping method, a node and a system.
Background
Wireless Networks (WSNs) are a distributed sensing network, the tip of which is a Sensor that can sense and examine the outside world. The sensors in the WSN communicate in a wireless mode, so that the network setting is flexible, the position of equipment can be changed at any time, and the equipment can be connected with the Internet in a wired or wireless mode. A multi-hop ad hoc network formed by wireless communication.
In order to realize precise sensing of environmental information and guarantee the effectiveness of node energy, cooperative sensing and data transmission among nodes have become one of the hot problems of sensor network research.
For example: at present, in the field of wireless remote meter reading, because the equipment cannot realize external direct current due to environmental restriction, most of wireless remote meter reading equipment adopts disposable lithium batteries for power supply, and the service life is more than 3 years, so the equipment is sensitive to power consumption, and the dormant standby current is uA level, so the equipment only wakes up to work in a specific time period and continues dormancy after being processed. For example: in a meter reading network, when a master node sends data to a slave node, a wake-up code must be first sent, and the data is sent only at the tail end of the wake-up code, for the slave node, the data can be received only after the wake-up code is continuously received, the time for sending the wake-up code is generally longer, and the sending time is unequal, so that the slave node inevitably receives the wake-up code for a longer time, the power consumption loss is increased, and the service life of a battery is reduced; similarly, when the slave node transmits data to the master node, power consumption of the master node is also lost.
Disclosure of Invention
The present invention is directed to provide a method, a node and a system for waking up/sleeping a communication node with low power consumption for a second time, which overcome the above-mentioned shortcomings in the prior art.
In order to achieve the above object, in one aspect, the present invention provides a secondary wake-up/sleep method for a low power consumption communication node, including:
the method comprises the steps that a second node receives an nth wake-up code segment in a data packet with a preset length sent by a first node in a wake-up period in a current wake-up/sleep cycle, wherein n is a positive integer, the data packet comprises a wake-up code and communication data positioned at the tail end of the wake-up code, the wake-up code comprises m continuous wake-up code segments, and m is a positive integer;
the second node calculates a time interval delta T required by the communication data at the current moment according to the received nth wake-up code segment;
the second node enters the primary dormancy in the current awakening/dormancy period by taking the current moment as a primary dormancy time point and the time interval as a primary dormancy time length;
when the one-time dormancy is finished, immediately waking up and receiving the communication data which is just reached, and continuing to enter the secondary dormancy in the current wake-up/dormancy period after the communication data is received, and waking up again until the wake-up time point of the next wake-up/dormancy period is reached.
In another aspect, the present invention provides a second node, including:
a receiving module, configured to receive an nth wakeup code segment in a data packet with a predetermined length sent by a first node at a wakeup time interval in a current wakeup/sleep cycle, where n is a positive integer, the data packet includes a wakeup code and communication data located at a tail end of the wakeup code, the wakeup code includes m consecutive wakeup code segments, and m is a positive integer;
the calculating module is used for calculating a time interval delta T required by the communication data at the current moment according to the received nth wake-up code segment;
a primary dormancy module, configured to enter a primary dormancy in the current wake-up/dormancy cycle with a current time as a primary dormancy time point and the time interval as a primary dormancy time length;
and the secondary awakening/sleeping module is used for immediately awakening and receiving the communication data which are just reached when the primary dormancy is finished, continuing to enter the secondary dormancy in the current awakening/sleeping period after the communication data are received, and awakening again until the awakening time point of the next awakening/sleeping period is reached.
In another aspect, the present invention provides a secondary sleep/wake-up network system, including:
the first node is used for sending a data packet with a preset length, wherein the data packet comprises a wake-up code and communication data positioned at the tail end of the wake-up code, the wake-up code comprises m continuous wake-up code segments, and m is a positive integer;
the second node is used for receiving an nth wake-up code segment in a data packet with a preset length sent by the first node in a wake-up period in a current wake-up/sleep cycle, wherein n is a positive integer; calculating a time interval delta T required by the communication data when the current moment reaches the communication data according to the received nth wake-up code segment, and entering a sleep in the current wake-up/sleep period by taking the current moment as a sleep time point and the time interval as a sleep time length; and when the one-time dormancy is finished, immediately waking up and receiving the communication data which is just reached, and continuing to enter the secondary dormancy in the current wake-up/dormancy period after the communication data is received, and waking up again until the wake-up time point of the next wake-up/dormancy period is reached.
According to the low-power-consumption communication node secondary awakening/sleeping method, the node and the system, after any one piece of awakening is received, the communication node enters a sleeping state, awakening is carried out until data arrives, and the communication node continues sleeping after receiving the data, so that power consumption loss caused by continuous receiving of awakening codes can be avoided, and the purposes of reducing power consumption and prolonging the service life of a battery are achieved.
Drawings
Fig. 1 is a flowchart of a first embodiment of a low power consumption communication node secondary wake-up/sleep method according to the present invention;
FIG. 2 is a flowchart illustrating a second embodiment of a method for waking up/sleeping a low power communication node according to the present invention;
FIG. 3 is a schematic structural diagram of a second node according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a secondary sleep/wake-up network system according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Example one
Referring to fig. 1, fig. 1 illustrates an implementation flow of a method for waking up/sleeping a low power consumption communication node twice according to an embodiment of the present invention, and for convenience of description, only a part related to the embodiment of the present invention is illustrated. Specifically, the method for waking up/sleeping the low-power-consumption communication node for the second time comprises the following steps:
s101, a second node receives an nth wake-up code segment in a data packet with a preset length sent by a first node in a wake-up period in a current wake-up/sleep cycle, wherein n is a positive integer, the data packet comprises a wake-up code and communication data located at the tail end of the wake-up code, the wake-up code comprises m continuous wake-up code segments, and m is a positive integer.
In the invention, the wake-up code sent by the first node is composed of a plurality of continuous wake-up code segments, and the second node can receive any one wake-up code segment without receiving the whole complete wake-up code. And the plurality of continuous wakeup code segments are continuously transmitted in sequence during transmission, namely, the 1 st wakeup code segment is transmitted until the last wakeup code segment is transmitted, and then the communication data is transmitted. For example: the wake-up code includes 10 wake-up code segments (i.e. when m is 10), which are the 1 st wake-up code segment, the 2 nd wake-up code segment, and the 3 rd wake-up code segment … … th wake-up code segment in sequence, and when the first node transmits, the first node starts to transmit from the 1 st wake-up code segment until the 10 th wake-up code segment transmits the communication data after completing the transmission.
Because the first node and the second node are two nodes in the wireless network, and both the nodes are in periodic wake-up work, and the wake-up time point of the second node and the wake-up time point of the first node are not necessarily synchronous, when the second node wakes up at the wake-up time point in one wake-up/sleep cycle, it may receive a non-1 st wake-up code segment, for example, when the second node wakes up, a 3 rd wake-up segment sent by the first node arrives, and the second node may receive the 3 rd wake-up code segment.
S102, the second node calculates a time interval delta T required by the communication data at the current moment according to the received nth wake-up code segment.
That is, after the second node wakes up and receives a wake-up code segment, it does not receive the subsequent wake-up code segment any more, but calculates how long the communication data in the data packet needs to be reached according to the received related information of the wake-up code segment.
And S103, the second node enters the primary sleep in the current awakening/sleep cycle by taking the current moment as a primary sleep time point and the time interval as a primary sleep time length.
After the nth wakeup code segment is received by the second node, the first node continues to send subsequent wakeup code segments which are finished to be sent, and if the second node continues to receive subsequent wakeup code segments, the second node is inevitably in a receiving state for a long time, so that the power consumption is increased. Therefore, in step S103, after a wakeup code segment is received by the second node and the time interval Δ T required for the communication data to arrive is calculated, the second node enters a sleep mode in the current wakeup/sleep cycle. And the time length of the one-time dormancy is just the time required by the first node to continue to send the subsequent wakeup code segment after the nth wakeup code segment, so that when the first node finishes sending the subsequent wakeup code segment and prepares to send communication data, the second node just finishes the one-time dormancy and wakes up, and the waking up can be called as secondary waking.
S104, when the primary dormancy is finished, immediately waking up and receiving the just reached communication data, and continuing to enter the secondary dormancy in the current wake-up/dormancy period after the communication data are received, and waking up again until the wake-up time point of the next wake-up/dormancy period is reached.
That is to say, when the second node finishes waking up after sleeping once in the current wake-up/sleep cycle, the first node just sends the communication data, at this time, the second node can receive the communication data sent by the first node, and after receiving the communication data, the second node enters the sleep state again, that is, enters the secondary sleep state, and when the secondary sleep is finished, that is, the second node finishes sleeping in the current wake-up/sleep cycle, the second node enters the next wake-up/sleep cycle.
It can be understood that, in this embodiment, the first node and the second node may be, but are not limited to, a concentrator, a collector, or a node device such as a wireless communication meter in a wireless meter reading network.
According to the low-power-consumption communication node secondary awakening/sleeping method provided by the embodiment, the awakening code is divided into a plurality of awakening code segments, the second node enters the sleeping state after receiving any one awakening code segment, awakens until data arrives, and continues to sleep after receiving the data, namely, the whole awakening code is not received any more, so that power consumption loss caused by continuous receiving of the awakening code can be avoided, the purposes of reducing power consumption and prolonging the service life of a battery are achieved.
Example two
Referring to fig. 2, fig. 2 shows another implementation flow of a low power consumption communication node secondary wake-up/sleep method provided in the embodiment of the present invention, and for convenience of description, only parts related to the embodiment of the present invention are shown. Specifically, the method for waking up/sleeping the low-power-consumption communication node for the second time comprises the following steps:
s201, the second node receives an nth wake-up code segment in a data packet with a preset length sent by the first node in a wake-up period in a current wake-up/sleep cycle, wherein n is a positive integer, the data packet comprises a wake-up code and communication data located at the tail end of the wake-up code, the wake-up code comprises m continuous wake-up code segments, and m is a positive integer.
In the invention, the wake-up code sent by the first node is composed of a plurality of continuous wake-up code segments, and the second node can receive any one wake-up code segment without receiving the whole complete wake-up code. And the plurality of continuous wakeup code segments are continuously transmitted in sequence during transmission, namely, the 1 st wakeup code segment is transmitted until the last wakeup code segment is transmitted, and then the communication data is transmitted. For example: the wake-up code includes 10 wake-up code segments (i.e. when m is 10), which are the 1 st wake-up code segment, the 2 nd wake-up code segment, and the 3 rd wake-up code segment … … th wake-up code segment in sequence, and when the first node transmits, the first node starts to transmit from the 1 st wake-up code segment until the 10 th wake-up code segment transmits the communication data after completing the transmission.
Because the first node and the second node are two nodes in the wireless network, and both the nodes are in periodic wake-up work, and the wake-up time point of the second node and the wake-up time point of the first node are not necessarily synchronous, when the second node wakes up at the wake-up time point in one wake-up/sleep cycle, it may receive a non-1 st wake-up code segment, for example, when the second node wakes up, a 3 rd wake-up segment sent by the first node arrives, and the second node may receive the 3 rd wake-up code segment.
The transmission time lengths t of the wakeup code segments are equal, each wakeup code segment carries a segment count, the segment counts of the wakeup code segments are continuous natural numbers, and the minimum value of the segment counts is 0 or 1.
It should be noted that the transmission time length of the wakeup code segment refers to the time required for the first node to transmit a complete wakeup code segment. The segment count is to mark the position of the wakeup code segment in a plurality of consecutive wakeup code segments, so as to conveniently judge how many wakeup code segments are respectively arranged before and after the wakeup code segment.
That is, the lengths of the wake-up code segments are equal, and a plurality of consecutive wake-up code segments are counted consecutively, for example, the number of the wake-up code segments is 10, and the segment counts corresponding to the 1 st wake-up code segment to the 10 th wake-up code segment may be 1, 2, 3 … … 10, etc.
S202, obtaining the segment count a and the transmission time length t in the nth wake-up code segment. Specifically, after receiving the nth wakeup code segment, the second node may obtain the segment count a carried by the nth wakeup code segment from the wakeup segment, and the transmission time length may be preset, for example, the transmission length of one wakeup code segment is 100 milliseconds.
S203, calculating the number x of the wakeup code segments which are not sent in the wakeup code according to the segment count a in the nth wakeup code segment, and multiplying the number x by the time length T to obtain the time interval delta T required by the communication data at the current moment.
Since the wakeup code segments are counted continuously, when the segment count a in the nth received wakeup code segment is known, the number x of wakeup code segments which are not transmitted yet can be known. The wakeup code segments are continuously transmitted in sequence, and the transmission time length of each wakeup code segment is equal, so that the time required for transmitting the subsequent wakeup code segments can be obtained by multiplying the number x of the wakeup code segments which are not transmitted by the transmission time length of each wakeup code segment. Since the first node starts to transmit the communication data after the first node transmits the subsequent wakeup code segment, the time required for transmitting the subsequent wakeup code segment is the time interval Δ T required by the communication data at the current time.
That is, after the second node wakes up and receives a wake-up code segment, it does not receive the subsequent wake-up code segment any more, but calculates how long the communication data in the data packet still needs to be reached according to the received segment count in the wake-up code segment.
It should be noted that, the number x of the wakeup code segments that have not been sent in the wakeup code is calculated according to the segment count a in the nth wakeup code segment, which is different according to different segment count modes of a plurality of consecutive wakeup code segments, for example:
in an embodiment of the present invention, the segment counts of a plurality of consecutive wakeup code segments are sequentially increased, and correspondingly, the step of calculating the number m of the wakeup code segments that have not been sent according to the segment count a in the nth wakeup code segment specifically includes:
and subtracting the total number m of the wake-up code segments and the segment count a to obtain the number x of the wake-up code segments which are not sent yet.
That is, if the segment count of a plurality of consecutive wakeup code segments is sequentially incremented from 0 or 1, the total number of wakeup code segments is subtracted by the segment count of the received wakeup code segment to obtain the number of wakeup code segments that have not been transmitted.
For example, when m is 10 and the minimum value of the segment count is 1, the segment counts of a plurality of consecutive wakeup code segments are 1, 2, and 3 … … 10 in sequence. Assuming that the wakeup code segment received by the second node is the 3 rd wakeup code segment, the segment count in the 3 rd wakeup code segment is also 3, and subtracting 3 from 10, the number of the wakeup code segments which are not sent is 7.
For example, when m is 10 and the minimum value of the segment count is 0, the segment counts of a plurality of consecutive wakeup code segments are 0, 1, and 2 … … 9 in this order. Assuming that the wakeup code segment received by the second node is the 3 rd wakeup code segment, the segment count in the 3 rd wakeup code segment is also 2, and subtracting 2 from 9, the number of the wakeup code segments which are not sent is 7.
In another embodiment of the present invention, the segment counts of a plurality of consecutive wakeup code segments are sequentially decreased, and the minimum value is 0. Correspondingly, the step of calculating the number x of the wakeup code segments which are not sent according to the segment count a in the nth wakeup code segment specifically comprises the following steps:
determining the segment count a as the number x of the wakeup code segments that have not been sent.
That is, in this case, the segment count a in the wakeup code segment is equal to the number x of wakeup code segments that have not been transmitted.
For example, when m is 10, the segment counts of a plurality of consecutive wakeup code segments are 9, 8, and 7 … … 0 in sequence. If the wakeup code segment received by the second node is the 3 rd wakeup code segment, the segment count in the 3 rd wakeup code segment is also 7, and the number of the wakeup code segments that are not sent is 7.
In another embodiment of the present invention, the segment counts of a plurality of consecutive wakeup code segments are sequentially decreased, and the minimum value is 1; correspondingly, the step of calculating the number x of the wakeup code segments which are not sent according to the segment count a in the nth wakeup code segment specifically comprises the following steps:
and subtracting 1 from the segment count a to obtain the number x of the wake-up code segments which are not sent yet.
For example, when m is 10, the segment counts of a plurality of consecutive wakeup code segments are 10, 9, 8, and 7 … … 1 in sequence. Assuming that the wakeup code segment received by the second node is the 3 rd wakeup code segment, the segment count in the 3 rd wakeup code segment is also 8, and subtracting 1 from 8, the number of the wakeup code segments which are not sent is 7.
And S204, the second node enters the primary sleep in the current awakening/sleep cycle by taking the current moment as a primary sleep time point and the time interval as a primary sleep time length.
After the nth wakeup code segment is received by the second node, the first node continues to send subsequent wakeup code segments which are finished to be sent, and if the second node continues to receive subsequent wakeup code segments, the second node is inevitably in a receiving state for a long time, so that the power consumption is increased. Therefore, in step S204, after a wakeup code segment is received by the second node and the time interval Δ T required for the communication data to arrive is calculated, the second node enters a sleep mode in the current wakeup/sleep cycle. And the time length of the one-time dormancy is just the time required by the first node to continue to send the subsequent wakeup code segment after the nth wakeup code segment, so that when the first node finishes sending the subsequent wakeup code segment and prepares to send communication data, the second node just finishes the one-time dormancy and wakes up, and the waking up can be called as secondary waking.
S205, when the one-time dormancy is finished, immediately waking up and receiving the just reached communication data, and continuing to enter the secondary dormancy in the current wake-up/dormancy period after the communication data is received, and waking up again until the wake-up time point of the next wake-up/dormancy period is reached.
That is to say, when the second node finishes waking up after sleeping once in the current wake-up/sleep cycle, the first node just sends the communication data, at this time, the second node can receive the communication data sent by the first node, and after receiving the communication data, the second node enters the sleep state again, that is, enters the secondary sleep state, and when the secondary sleep is finished, that is, the second node finishes sleeping in the current wake-up/sleep cycle, the second node enters the next wake-up/sleep cycle.
It can be understood that, in this embodiment, the first node and the second node may be, but are not limited to, a concentrator, a collector, or a node device such as a wireless communication meter in a wireless meter reading network.
According to the low-power-consumption communication node secondary awakening/sleeping method provided by the embodiment, the awakening code is divided into a plurality of awakening code segments, the second node enters the sleeping state after receiving any one awakening code segment, awakens until data arrives, and continues to sleep after receiving the data, namely, the whole awakening code is not received any more, so that power consumption loss caused by continuous receiving of the awakening code can be avoided, the purposes of reducing power consumption and prolonging the service life of a battery are achieved.
EXAMPLE III
Fig. 3 illustrates a second node 300 provided in the embodiment of the present invention, and only shows a part related to the embodiment of the present invention for convenience of description. Specifically, the second node provided in the embodiment of the present invention includes:
a receiving module 301, configured to receive an nth wakeup code segment in a data packet with a predetermined length sent by a first node at a wakeup time interval in a current wakeup/sleep cycle, where n is a positive integer, the data packet includes a wakeup code and communication data located at an end of the wakeup code, the wakeup code includes m consecutive wakeup code segments, and m is a positive integer.
A calculating module 302, configured to calculate, according to the received nth wakeup code segment, a time interval Δ T required by the distance from the current time to the communication data.
A primary sleep module 303, configured to enter a primary sleep in the current wake-up/sleep cycle by taking the current time as a primary sleep time point and taking the time interval as a primary sleep time length.
A secondary waking/sleeping module 304, configured to wake up and receive the communication data that is just reached immediately when the primary sleeping is finished, and continue to enter the secondary sleeping in the current waking/sleeping period after the communication data is received, and wake up again until a waking time point of a next waking/sleeping period is reached.
In an embodiment of the present invention, the transmission time lengths t of the wakeup code segments are equal, and each wakeup code segment carries a segment count, the segment counts of consecutive wakeup code segments are consecutive natural numbers, and the minimum value of the segment counts is 0 or 1.
The calculating module 302 specifically includes:
an obtaining module 3021, configured to obtain a segment count a and the transmission time length t in the nth wakeup code segment;
an operation module 3022, configured to calculate, according to the segment count a in the nth wakeup code segment, the number x of wakeup code segments that have not been sent in the wakeup code, and then multiply the number x by the time length T to obtain the time interval Δ T.
In one embodiment of the present invention, the segment count of a plurality of consecutive wakeup code segments is sequentially increased; correspondingly, the operation module 3022 is specifically configured to: and subtracting the total number m of the wake-up code segments and the segment count a to obtain the number x of the wake-up code segments which are not sent yet.
In another embodiment of the present invention, the segment counts of a plurality of consecutive wakeup code segments are sequentially decreased, and the minimum value is 0; correspondingly, the operation module 3022 is specifically configured to: determining the segment count a as the number x of the wakeup code segments that have not been sent.
In yet another embodiment of the invention, the segment counts of a plurality of consecutive wake-up code segments are sequentially decreased, and the minimum value is 1; correspondingly, the operation module 3022 is specifically configured to: and subtracting 1 from the segment count a to obtain the number x of the wake-up code segments which are not sent yet.
It is understood that, in this embodiment, the second node 300 may be, but is not limited to, a node device in a wireless meter reading network, such as a concentrator, a collector, or a wireless communication meter.
It should be noted that the second node 300 in the embodiment of the present invention may be configured to implement all technical solutions in the foregoing method embodiments, and the functions of each functional unit may be specifically implemented according to the method in the foregoing method embodiments, and the specific implementation process may refer to the relevant description in the foregoing method embodiments, and is not described herein again.
According to the second node 300 provided by this embodiment, the wakeup code is divided into a plurality of wakeup code segments, and after any wakeup code segment is received, the second node enters a sleep state until the data arrives, and then continues to sleep after receiving the data, that is, the whole wakeup code is not received any more, so that power loss caused by continuously receiving the wakeup code can be avoided, and the purposes of reducing power consumption and prolonging the service life of the battery are achieved.
Referring to fig. 4, fig. 4 illustrates a secondary sleep/wake-up network system 400 according to an embodiment of the present invention.
A first node 401, configured to send a data packet with a predetermined length, where the data packet includes a wake-up code and communication data located at an end of the wake-up code, where the wake-up code includes m consecutive wake-up code segments, and m is a positive integer;
the second node 300 is configured to receive an nth wakeup code segment in a data packet with a predetermined length sent by the first node 401 at a wakeup time interval in a current wakeup/sleep cycle, where n is a positive integer; calculating a time interval delta T required by the communication data when the current moment reaches the communication data according to the received nth wake-up code segment, and entering a sleep in the current wake-up/sleep period by taking the current moment as a sleep time point and the time interval as a sleep time length; and when the one-time dormancy is finished, immediately waking up and receiving the communication data which is just reached, and continuing to enter the secondary dormancy in the current wake-up/dormancy period after the communication data is received, and waking up again until the wake-up time point of the next wake-up/dormancy period is reached.
It should be noted that the first node 401 and the second node 300 in the embodiments of the present invention may be implemented by the methods or nodes in the foregoing embodiments, and the specific implementation process may refer to the description related to the foregoing methods or node embodiments, and is not described herein again.
It is understood that in this embodiment, the first node 401 and the second node 300 may be, but are not limited to, a node device such as a collector or a wireless communication meter, and thus, the formed network may be applied to wireless meter reading.
According to the secondary wake-up/sleep network system 400 provided by the invention, the second node 300 enters the sleep state after receiving any one wake-up fragment, wakes up until the data arrives, and continues to sleep after receiving the data, so that the power loss caused by continuously receiving wake-up codes can be avoided, and the purposes of reducing power consumption and prolonging the service life of a battery are achieved.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. For the device or system type embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A low-power consumption communication node secondary awakening/sleeping method is characterized by comprising the following steps:
the method comprises the steps that a second node receives an nth wake-up code segment in a data packet with a preset length sent by a first node in a wake-up period in a current wake-up/sleep cycle, wherein n is a positive integer, the data packet comprises a wake-up code and communication data positioned at the tail end of the wake-up code, the wake-up code comprises m continuous wake-up code segments, and m is a positive integer;
the second node calculates a time interval delta T required by the communication data at the current moment according to the received nth wake-up code segment;
the second node enters the primary dormancy in the current awakening/dormancy period by taking the current moment as a primary dormancy time point and the time interval as a primary dormancy time length;
when the one-time dormancy is finished, immediately waking up and receiving the communication data which is just reached, and continuing to enter the secondary dormancy in the current wake-up/dormancy period after the communication data is received, and waking up again until the wake-up time point of the next wake-up/dormancy period is reached.
2. The method according to claim 1, wherein the transmission time lengths t of the wakeup code segments are equal, each wakeup code segment carries a segment count, the segment count of consecutive wakeup code segments is a continuous natural number, and the minimum value of the segment count is 0 or 1;
the step of calculating, by the second node, a time interval Δ T required for the communication data to arrive at the current time according to the received nth wakeup code segment specifically includes:
obtaining a segment count a and the transmission time length t in the nth wake-up code segment;
and calculating the number x of the wakeup code segments which are not sent in the wakeup code according to the segment count a in the nth wakeup code segment, and multiplying the number x by the time length T to obtain the time interval delta T.
3. The method according to claim 2, wherein the segment count of a plurality of consecutive wakeup code segments is sequentially increased;
the step of calculating the number x of the wakeup code segments that have not been sent according to the segment count a in the nth wakeup code segment specifically includes:
and subtracting the total number m of the wake-up code segments and the segment count a to obtain the number x of the wake-up code segments which are not sent yet.
4. The method according to claim 2, wherein the segment counts of a plurality of consecutive wakeup code segments are sequentially decreased, and the minimum value is 0;
the step of calculating the number x of the wakeup code segments that have not been sent according to the segment count a in the nth wakeup code segment specifically includes: determining the segment count a as the number x of the wakeup code segments not yet transmitted;
or,
the segment counts of a plurality of continuous wakeup code segments are sequentially reduced, and the minimum value is 1;
the step of calculating the number x of the wakeup code segments that have not been sent according to the segment count a in the nth wakeup code segment specifically includes: and subtracting 1 from the segment count a to obtain the number x of the wake-up code segments which are not sent yet.
5. The method according to claim 1, wherein the first node and the second node are a concentrator, a collector or a wireless communication meter.
6. A second node, comprising:
a receiving module, configured to receive an nth wakeup code segment in a data packet with a predetermined length sent by a first node at a wakeup time interval in a current wakeup/sleep cycle, where n is a positive integer, the data packet includes a wakeup code and communication data located at a tail end of the wakeup code, the wakeup code includes m consecutive wakeup code segments, and m is a positive integer;
the calculating module is used for calculating a time interval delta T required by the communication data at the current moment according to the received nth wake-up code segment;
a primary dormancy module, configured to enter a primary dormancy in the current wake-up/dormancy cycle with a current time as a primary dormancy time point and the time interval as a primary dormancy time length;
and the secondary awakening/sleeping module is used for immediately awakening and receiving the communication data which are just reached when the primary dormancy is finished, continuing to enter the secondary dormancy in the current awakening/sleeping period after the communication data are received, and awakening again until the awakening time point of the next awakening/sleeping period is reached.
7. The second node according to claim 6, wherein the transmission time lengths t of the wakeup code segments are equal, and each wakeup code segment carries a segment count, the segment count of consecutive wakeup code segments is a consecutive natural number, and the minimum value of the segment count is 0 or 1;
the calculation module specifically includes:
an obtaining module, configured to obtain a segment count a and the transmission time length t in the nth wakeup code segment;
and the operation module is used for calculating the number x of the wakeup code segments which are not sent in the wakeup code according to the segment count a in the nth wakeup code segment, and multiplying the number x by the time length T to obtain the time interval delta T.
8. The second node of claim 6, wherein the segment counts of a plurality of consecutive segments of the wake-up code are sequentially incremented;
the operation module is specifically configured to: and subtracting the total number m of the wake-up code segments and the segment count a to obtain the number x of the wake-up code segments which are not sent yet.
9. The second node of claim 6, wherein the segment counts of a plurality of consecutive wakeup code segments decrease sequentially and the minimum value is 0;
the operation module is specifically configured to: determining the segment count a as the number x of the wakeup code segments not yet transmitted;
or,
the segment counts of a plurality of continuous wakeup code segments are sequentially reduced, and the minimum value is 1;
the operation module is specifically configured to: and subtracting 1 from the segment count a to obtain the number x of the wake-up code segments which are not sent yet.
10. A secondary sleep/wake-up network system, comprising:
the first node is used for sending a data packet with a preset length, wherein the data packet comprises a wake-up code and communication data positioned at the tail end of the wake-up code, the wake-up code comprises m continuous wake-up code segments, and m is a positive integer;
the second node is used for receiving an nth wake-up code segment in a data packet with a preset length sent by the first node in a wake-up period in a current wake-up/sleep cycle, wherein n is a positive integer; calculating a time interval delta T required by the communication data when the current moment reaches the communication data according to the received nth wake-up code segment, and entering a sleep in the current wake-up/sleep period by taking the current moment as a sleep time point and the time interval as a sleep time length; and when the one-time dormancy is finished, immediately waking up and receiving the communication data which is just reached, and continuing to enter the secondary dormancy in the current wake-up/dormancy period after the communication data is received, and waking up again until the wake-up time point of the next wake-up/dormancy period is reached.
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