CN106506046B - A kind of electricity saving method of bandwidth carrier communication system terminal node - Google Patents
A kind of electricity saving method of bandwidth carrier communication system terminal node Download PDFInfo
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- CN106506046B CN106506046B CN201611045260.6A CN201611045260A CN106506046B CN 106506046 B CN106506046 B CN 106506046B CN 201611045260 A CN201611045260 A CN 201611045260A CN 106506046 B CN106506046 B CN 106506046B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/544—Setting up communications; Call and signalling arrangements
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Abstract
A kind of electricity saving method of bandwidth carrier communication system terminal node is claimed in the present invention, and specific electricity-saving function is uniformly controlled management by central control station point.The power saving of other all websites of central control station point is divided into three kinds of states, i.e. sleep pattern, awakening mode and activation pattern.Transmitting-receiving of the website in sleep pattern without any data, entire website are in off-position；The website of awakening mode carries out the parsing of beacon frame, and detects whether to send request of data there are other websites, and the website under the mode only receives data, but does not send data.The website of activation pattern is the station data that website receives that other websites are sent in the wake mode, then immediately enters activation pattern, and under the mode, it is functional that website can carry out the institute such as sending and receiving data.
Description
Technical field
The invention belongs to broadband power carrier communications, mainly propose each in a kind of broadband power carrier communication system
The power save scheme of a equipment.
Background technique
Bandwidth carrier communication (referred to as: PLC) network is to realize low-voltage electricity user using low-voltage power line as telecommunication media
Power information convergence, the communication network of transmission and interaction.According to the design feature of power line, the network of bandwidth carrier communication is opened up
Structure tree structure is flutterred, as shown in Figure 1.The structure is centered on central control station point (referred to as: CCO), with agentbased control station
Point (referred to as: PCO) is relaying, connects the multi-layer network of all websites (abbreviation STA), is also known as without the website of substation point
For end station point.
In actual bandwidth carrier communication network topology structure, connection is not necessarily tree structure, such as Fig. 1 between website
It is that is, the website B1 hair there may be being used in conjunction shown in bandwidth carrier communication network topology figure, between website B1 and website B2
The data sent, website B2 may be received, and the data that certain website B2 is sent, website B1 is also that may receive.But actual
In network management, it is managed using tree topology.As shown in figure 1, website A and website C1 communication, then need website B1
Forwarding.Tree topology has recorded a kind of routing infrastructure relationship of PLC system.Communication between website is then by this routing relation
Determining.
In actual application, the transmission medium that bandwidth carrier communication uses is power line, so there is no websites to power
The problem of, this and mobile terminal have very big difference, so being not directed to the province of website in the standard that State Grid Corporation of China provides
Motor system.If but working terminal does not use electricity-saving mechanism, and there are when extensive work website in network, then always
Body power consumption is also bigger, is unfavorable for energy saving, and real-time working is also resulted in electricity by the electronic component on secondary site in this way
Sub- device is easy aging, after a period of time, increases the work of the abnormal probability of site works, maintenance or replacement
Amount is also very big, and which increase operation expenses.
Since the website routing relation of PLC system is at tree structure, this brings certain difficulty to power saving, in actual fortune
In row, system needs each website to need periodically to report discovery list, to safeguard and optimize the routing table of PLC system, so
Central control station point, agentbased control website, end station point send the data moment be it is random, at this time receive data targeted sites or
It is to act on behalf of website to be likely to be at power down mode, if transmitting station does not know targeted sites and the power saving shape by website on path
State, then will lead to transmission data failure.However transmitting station is needed to record or detect communication lines passed through website on
Power down mode, this is practically impossible to.
But for Practical Project angle, and raising user experience, the website in bandwidth carrier communication carries out power saving
Mechanism be it is necessary, have its specific realistic meaning.Invention thus proposes one kind in broadband power carrier wave each website
Electricity saving method.
Summary of the invention
Present invention seek to address that the above problem of the prior art.It proposes a kind of power saving and improves the broadband of communication efficiency and carry
The electricity saving method of communi-cation system terminal node.Technical scheme is as follows:
A kind of electricity saving method of bandwidth carrier communication system terminal node, the bandwidth carrier communication system include center control
Website processed acts on behalf of website and end station point, is uniformly controlled each province for acting on behalf of website and end station point of management by central control station point
Power mode；Central control station clicks through the planning of province electricity, and determines to save electrical parameter and be distributed to and each act on behalf of website and end station point；
It is each to act on behalf of website and the power saving of end station point is divided into Three models, i.e. sleep pattern, awakening mode and activation pattern,
Transmitting-receiving of the website in sleep pattern without any data, entire website are in off-position；The website of awakening mode into
The parsing of row beacon frame, and detect whether to send request of data there are other websites, the website under the mode only receives number
According to, but do not send data；The website of activation pattern is the station data for receiving other websites in the wake mode and sending, then immediately
Activation pattern is entered, under the mode, it is functional that website can carry out the institute including sending and receiving data.
Further, the distribution that the central control station point saves electrical parameter, which uses, passes sequentially through central beacon-agent beacon
Sequence carry out broadcast transmission, central control station point broadcast central beacon in, include FNBeacon frame number, FNSleeping frame
Number, FNWaking frame number, Toffset frame number, wherein FNBeacon frame number indicates that each Site synch is sent out to central control station point
Base when sending the beacon in central beacon, FNSleeping frame number indicate each time span for entering sleep of each website；
FNWaking frame number indicates that each website wakes up the time that not can enter sleep pattern later, and Toffset frame number is indicated and given
Outbound point enters the beacon frame shifting amount of power down mode, and value is less than or is equal to FNSleeping frame number and FNWaking frame number
The sum of.
Further, the entry condition of the sleep pattern are as follows:
If the FN of websiteBeaconMeet and enter sleep mode condition:
FNBeacon% (FNSleeping+FNWaking)=FNoffset, wherein % indicates modular arithmetic.
Then website enters sleep pattern, and sleep FN under website sleep patternSleepingAwakening mode is entered after frame number；?
FN is monitored under awakening modeWakingAfter frame number, if not finding activation business, sleep pattern is gone successively to.
Further, when website in the wake mode, detect need our station point carry out business processing when, website is located immediately
The business is managed, after treatment will start TActiveTimer, website is in TActiveNon- power saving mould is in during timer activation
Formula, if timer TActiveTime-out, and meet FNBeacon% (FNSleeping+FNWaking)=FNoffsetCondition, then it is full
Condition that is sufficient then entering sleep pattern, otherwise website keeps activation pattern, until meeting FNBeacon% (FNSleeping+
FNWaking)=FNoffsetWhen condition, website is just again introduced into sleep pattern.
The electricity saving method of broadband power carrier terminal node, in broadband power carrier terminal node initial group network process, institute
There is website all in activation pattern, after initial networking is completed, just start electricity-saving mechanism, comprising the following steps:
1. broadband power carrier network does not start electricity-saving function in initial group network process；
2. broadband power carrier network, after initial group network process, central control station point starts battery saving mode, broadcast is saved
Electrical parameter, each website start power saving process flow after receiving power saving requirement；
3. acting on behalf of website or end station point in electricity-saving wake-up mode, if necessary to business processing, and data are sent
Message then starts T to other websitesActiveTimer carries out data transmission into activation pattern；
4. being in the website of electricity-saving wake-up mode, the website of data message is received, if it is the report for needing the processing of this website
Then text starts TActiveTimer, into activation pattern；
5. the website of activation pattern is in, in TActiveDuring timer starts, if not receiving report to be treated
Text, then TActiveAfter timer expiry, into corresponding battery saving mode.
It advantages of the present invention and has the beneficial effect that:
The present invention first: according to PLC system network topology structure feature, proposing the power saving solution of complete set,
The function that can complete PLC system, has been completed at the same time electricity-saving function.
Second: acting on behalf of website for PLC system and end station point exactly defines three kinds of battery saving modes, i.e. awakening mode, sleep
Mode and activation pattern.Central control station point is responsible for power saving planning, and long by the time of central beacon broadcast Three models
Degree.Improve the flexibility of PLC system power saving.
Third: the present invention can support it is different act on behalf of website and end node in fixed time all in awakening mode, solve
Stationary problem is waken up between different websites.
4th: in website into central control station point communication process, first under the awakening mode of website, into activation mould
Formula, and generate point communication link, all entrance activation of all websites in chain road from the website to central control station
Mode improves communication efficiency.
Detailed description of the invention
Fig. 1 is bandwidth carrier communication network topology figure in the prior art；
Fig. 2 is the website battery saving mode transfer figure of the preferred embodiment of the present invention；
Fig. 3 is preferred embodiment of the present invention website sleep pattern and awakening mode period schematic diagram；
Fig. 4 is the mode transition diagram that preferred embodiment of the present invention website is in activation pattern；
Fig. 5 is each mutually coordinated flow diagram of website battery saving mode of the preferred embodiment of the present invention；
Fig. 6 is the site apparatus topological structure schematic diagram of electricity meter-reading in preferred embodiment of the present invention PLC system；
Fig. 7 is that preferred embodiment of the present invention end station point D2 reports discovery list flow diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, detailed
Carefully describe.Described embodiment is only a part of the embodiments of the present invention.
Technical scheme is as follows:
The invention proposes a kind of electricity saving method of broadband power carrier wave, each website electricity-saving function is by central control station point
It is uniformly controlled management, central control station point indicates whether to need to enter battery saving mode in central beacon, and provides specific save
Electrical parameter.The power saving of other all websites of central control station point is divided into three kinds of states, i.e. sleep pattern, awakening mode and activation
Mode.Transmitting-receiving of the website in sleep pattern without any data, entire website are in off-position；The station of awakening mode
Point carries out the parsing of beacon frame, and detects whether to send request of data there are other websites, and the website under the mode only connects
Data are received, but do not send data.The website of activation pattern is the website number that website receives that other websites are sent in the wake mode
According to, then immediately enter activation pattern, under the mode, website can carry out sending and receiving data etc. institute it is functional.Three provinces of website
Power mode and transformational relation are as shown in Figure 2.
In the central beacon of central control station point broadcast, comprising each Site synch time in control whole network, often
Base when a Site synch sends the beacon in central beacon to central control station point, is denoted as FNBeaconFrame number.Each website it is every
The secondary time span for entering sleep is FNSleepingFrame number.In FN after each website wake-upWakingThe frame number time, which not can enter, sleeps
Sleep mode.And providing website to enter the beacon frame shifting amount of power down mode is ToffsetFrame number.Save electrical parameter FNBeaconFrame number,
FNSleepingFrame number, FNWakingFrame number, ToffsetFrame number is broadcasted in central beacon and agent beacon.
All websites monitor central beacon and agent beacon, and record saves electrical parameter FNBeaconFrame number, FNSleepingFrame number,
FNwakingFrame number, TOffsetFrame number, and each website is by real-time update FNBeaconFrame number, so as to central control station point
FNBeaconFrame number synchronization.
If the FN of websiteBeaconMeet and enter sleep mode condition:
FNBeacon% (FNSleeping+FNWaking)=FNoffsetWherein % indicates modular arithmetic.
Then website enters sleep pattern, and sleep FN under website sleep patternSleepingWake-up mould is entered after the frame number time
Formula；FN is monitored in the wake modeWakingAfter the frame number time, if not finding activation business, sleep mould is gone successively to
Formula.As shown in Fig. 3 website sleep pattern and awakening mode period schematic diagram.
Our station point is needed to carry out business processing if website in the wake mode, detects, website immediately treats arrangement
Task, after treatment will start TActiveTimer.If timer TActive time-out, and would meet FNBeacon%
(FNSleeping+FNWaking)=FNoffset condition then meets the condition for then entering sleep pattern, and otherwise website continues
In activation pattern, when meeting FNBeacon% (FNSleeping+FNWaking)=FNoffset condition, website is
It is again introduced into sleep pattern, as Fig. 4 website is in shown in the mode transition diagram of activation pattern.
The independent power saving principle of each website, each mutually coordinated process of website battery saving mode of following FIG. 5 is presented above
Figure provides each website in system is how to coordinate to complete power saving task.
Each mutually coordinated process of website battery saving mode is as follows:
Step 1: in PLC system, all devices are all in non-battery saving mode, that is, are in activation pattern, center control
After website processed completes initial networking, then modify province's electrosemaphore in central beacon, each agent point receive central beacon it
Afterwards, then province's electrosemaphore in central beacon is directly forwarded, if the power saving traffic sign placement in central beacon is state of activation, respectively
A website starts battery saving mode.
Each website receives province's electrical parameter in central beacon or agent beacon, each website FNBeaconMeet sleep
Mode condition FNBeacon% (FNSleeping+FNWaking)=FNoffsetWhen, then website enters sleep pattern, website sleep mould
Sleep FN under formulaSleepingAwakening mode is entered after the frame number time；FN is monitored in the wake modeSleepingThe frame number time it
Afterwards, if not finding activation business, sleep pattern is gone successively to.Such as step 1 in Fig. 4.
Step 2: either central control station point, act on behalf of website or end station point and cannot all initiate in a sleep mode
Any operation flow, each website could only initiate business in the wake mode.Step 2 as shown in Figure 4, if center control
Website needs to send business request information to end station point, asks then business can only be sent under the awakening mode of central control station point
Message is sought, and after sending the business request information, central control station point starts TActiveActivation supervision timer, and into
Enter activation pattern.
It acts on behalf of website and receives the business request information from central control station point in the wake mode, and asked according to business
Ask the purpose site identity in message, forwarding service request message to end station point.Activation pattern will be entered by acting on behalf of website at this time, and
And starting TActiveActivate supervision timer.
Agent point receives the business request information of central control station point, if without enough time in website awakening mode
Under be forwarded, then business request information will be saved by acting on behalf of website, and the forwarding service that arrives again of next awakening mode time is waited to ask
Seek message.
Step 3: end station checks and accepts the business request information from central control station point, then handles the message, and according to
Processing business demand replys service request response, after end station point sends service request response message, starts TActiveActivation monitoring
Timer, into activation pattern.
After agent checks and accepts the response of the service request from end station point, forwarding service request message is controlled to center
Then website restarts TActiveSupervision timer is activated, activation pattern is again introduced into.
After central control station checks and accepts the service request response message from end station point, T is restartedActiveActivation prison
Depending on timer, it is again introduced into activation pattern.
Step 4: during step 1 is to step 3, if website starts TActiveSupervision timer is activated, if
The timer expiry, then website then thinks that operation flow is over, and can enter sleep pattern according to website power saving principle
Or awakening mode.
Process flow in PLC system, then can complete the electricity-saving function of each website in PLC system, and save industry
Business is gone on smoothly.The present invention has the advantages that
First: according to PLC system network topology structure feature, the power saving solution of complete set is proposed, it can
The function of completing PLC system, has been completed at the same time electricity-saving function.
Second: acting on behalf of website for PLC system and end station point exactly defines three kinds of battery saving modes, i.e. awakening mode, sleep
Mode and activation pattern.Central control station point is responsible for power saving planning, and long by the time of central beacon broadcast Three models
Degree.Improve the flexibility of PLC system power saving.
Third: the present invention can support it is different act on behalf of website and end node in fixed time all in awakening mode, solve
Stationary problem is waken up between different websites.
4th: in website into central control station point communication process, first under the awakening mode of website, into activation mould
Formula, and generate point communication link, all entrance activation of all websites in chain road from the website to central control station
Mode improves communication efficiency.
Illustrate that the patent of invention is applied in PLC system to become apparent from, the process of discovery list is reported using end station point
It is illustrated.Assuming that the website topological structure of PLC is as shown in Figure 6.The structure amounts to level Four, and wherein website is central control station
Point；Website B1, website B2 and website B3 are level-one website；Website C1 and website C2 is second level website；Website D1, it website D2, stands
Point D3 and website D4 is three-level website.
After PLC system powers on the initial networking of completion, then all websites all record relevant routing iinformation, according to PLC
The requirement of route maintenance in system, after completing initial route setup, starting is reported discovery list timer by end station point, if
The discovery list timer time-out of end station point, then end station point sends discovery list message to website is acted on behalf of, by acting on behalf of website forwarding
It is sent to central control station point at heartbeat message, the discovery list information of end station point D2 is saved by central control station point.
If not using electricity-saving mechanism, discovery list message is reported to be ok on end station point above in real time
It carries out, after PLC system starts electricity-saving mechanism, although can complete end station point reports discovery list message event, but
It is to need to meet some operation rules of the invention, can just smoothly completes discovery list message and be reported to central control station point.
First: in PLC system, all websites include that central control station point default does not start battery saving mode, and center control
Website processed will in central beacon, act on behalf of website clearly each website in agent beacon and do not start battery saving mode.Central control station
After point completes initial networking, starting is reported discovery list timer by each end station point, and central control station point is in central beacon
Middle setting starts battery saving mode, and provides the parameter for realizing that power saving needs, and each time for entering sleep of each website is long
The FN of degreeSleepingThe frame number time.Each website not can enter the FN of sleep pattern after waking upWakingThe frame number time, and provide
Website enters the beacon frame shifting amount T of power down modeoffsetFrame.Such as steps 1 and 2,3 in Fig. 7.
FN is also carried in central beaconBeaconFrame number, either agentbased control website or end station point, receive
FNBeaconIt requires to be synchronized on this frame number after frame number, the FN of whole network in PLC systemBeaconIt is in synchronous regime.
Agentbased control website and end station the point FN in not receiving central beaconBeaconWhen frame number, it will be automatically updated according to oneself clock
FNBeaconFrame number, to keep central controller, the FN of agent controller and end station pointBeaconFrame number synchronization.
Second: central control station point and acting on behalf of website and end station point, detect the starting of this website is requested to save in a beacon
Power mode then saves province's electrical parameter in beacon.And detect the FN of this websiteBeaconMeet and enter sleep mode condition:
FNBeacon% (FNSleeping+FNWaking)=FNoffset
If this website FNBeaconMeet the formula, then our station is clicked through into sleep pattern, if conditions are not met, then this website place
In awakening mode.
It can detecte all beacons and message data from this website in the website of awakening mode, this website will test
Site information be recorded discovery list in, be recorded as NodeNeighbourList.Such as step 4 in Fig. 7.
Third: if end station point reports discovery list timer time-out, and the website is in the awakening mode of power saving
Under, which sends discovery list message, sends the site identity of NodeNeighbourList to and acts on behalf of website, it is assumed that
Website D2's reports discovery list message timer expiry, then website D2 arrives at a station the NodeNeighbourList transmission of collection
Point C2.When website D2 is sent to website C2, website C1 can also receive the discovery list message of website D2 transmission.At this
In scene, since website C1 is not that website D2 acts on behalf of website, so the power down mode of website C1 will not change, but stand
Point C2 is that website D2 acts on behalf of website, so forwarding the discovery list after website C2 receives the discovery list message of D2 transmission
Message is heartbeat message, and website C2 website starts TActiveTimer, and enter activation pattern.In website C2 forwarding
The website B2 of centre control site approach also opens TActiveTimer, and enter activation pattern.
In this process, end station point requires, highest to central control station point there may be many grades according to national grid
It can achieve 15 grades, then these websites can only wait next awakening mode week when certain site receives heartbeat message
Phase could forward heartbeat message.Such as step 5 in Fig. 7.
4th: end station point sends discovery list message to central control station point, then including local terminal website and center control
All repeater stations including website have been switched on TActiveTimer, if without subsequent packet processing, TActivePeriodically
After device time-out, each website will enter awakening mode or battery saving mode.
In the network topology structure of Fig. 6, website D2 sends discovery list message to central control station point, approach website
C2, website B2, the two websites will all start TActiveTimer enters activation pattern, that is, is transmitted across in subsequent packet
Cheng Zhong, end station point D2 enter non-power down mode between central control station point, end station point D2 and central control station point it
Between a communication link for not entering into power saving, but during this, the battery saving mode of other websites is unaffected.
The above embodiment is interpreted as being merely to illustrate the present invention rather than limit the scope of the invention.?
After the content for having read record of the invention, technical staff can be made various changes or modifications the present invention, these equivalent changes
Change and modification equally falls into the scope of the claims in the present invention.
Claims (4)
1. a kind of electricity saving method of bandwidth carrier communication system terminal node, the bandwidth carrier communication system includes center control
Website acts on behalf of website and end station point, which is characterized in that is uniformly controlled management by central control station point and each acts on behalf of website and end station
The battery saving mode of point；Central control station clicks through the planning of province electricity, and determines to save electrical parameter and be distributed to and each act on behalf of website and end
Website；
It is each to act on behalf of website and the power saving of end station point is divided into Three models, i.e. sleep pattern, awakening mode and activation pattern, it is in
Transmitting-receiving of the website of sleep pattern without any data, entire website are in off-position；The website of awakening mode carries out letter
The parsing of frame to be marked, and detects whether to send request of data there are other websites, the website under the mode only receives data, but
Do not send data；The website of activation pattern is the station data for receiving other websites in the wake mode and sending, then immediately enters
To activation pattern, under the mode, it is functional that website can carry out the institute including sending and receiving data；The entrance of the sleep pattern
Condition are as follows:
If the FN of websiteBeaconMeet and enter sleep mode condition:
FNBeacon% (FNSleeping+FNWaking)=FNoffset, then website enters sleep pattern, sleeps under website sleep pattern
FNSleepingAwakening mode is entered after frame number；FN is monitored in the wake modeWakingAfter frame number, if not finding to activate
Business then goes successively to sleep pattern；Wherein % indicates modular arithmetic, FNoffsetThe offset in power saving period is indicated entry into,
FNBeaconFrame number indicates base when each Site synch sends the beacon in central beacon to central control station point, FNSleepingFrame number
Indicate each time span for entering sleep of each website；FNWakingFrame number indicates that each website wakes up not can enter later and sleeps
The time of sleep mode.
2. the electricity saving method of bandwidth carrier communication system terminal node according to claim 1, which is characterized in that in described
The distribution that centre control site saves electrical parameter carries out broadcast transmission, center using the sequence for passing sequentially through central beacon-agent beacon
It include FN in the central beacon of control site broadcastBeaconFrame number, FNSleepingFrame number, FNWakingFrame number, Toffset frame number,
Middle FNBeaconFrame number indicates base when each Site synch sends the beacon in central beacon to central control station point, FNSleepingFrame
Number indicates each time span for entering sleep of each website；FNWakingFrame number indicates not can enter after each website wakes up
The time of sleep pattern, Toffset frame number indicates and provides the beacon frame shifting amount that website enters power down mode, and value is less than
Or it is equal to FNSleepingFrame number and FNWakingThe sum of frame number.
3. the electricity saving method of bandwidth carrier communication system terminal node according to claim 1, which is characterized in that work as website
In the wake mode, detect that website immediately treats the business, and after treatment will when our station point being needed to carry out business processing
Start TActiveTimer, website is in TActiveNon- battery saving mode is in during timer activation, if timer TActiveIt is super
When, and meet FNBeacon% (FNSleeping+FNWaking)=FNoffsetCondition, if meet if enter sleep pattern item
Part, otherwise website keeps activation pattern, until meeting FNBeacon% (FNSleeping+FNWaking)=FNoffsetCondition when
It waits, website is just again introduced into sleep pattern.
4. the electricity saving method of bandwidth carrier communication system terminal node according to claim 3, which is characterized in that broadband electricity
In power carrier terminal node initial group network process, all websites are all in activation pattern, and after initial networking is completed, just starting is saved
Motor system, comprising the following steps:
4.1 broadband power carrier networks do not start electricity-saving function in initial group network process；
For 4.2 broadband power carrier networks after initial group network process, central control station point starts battery saving mode, broadcast power saving ginseng
Number, each website start power saving process flow after receiving power saving requirement；
4.3 act on behalf of website or end station point in electricity-saving wake-up mode, if necessary to business processing, and send datagram
To other websites, then start TActiveTimer carries out data transmission into activation pattern；
4.4 be in electricity-saving wake-up mode websites, receive the website of data message, if it is need this website processing message,
Then start TActiveTimer, into activation pattern；
4.5 are in the website of activation pattern, in TActiveDuring timer starts, if not receiving message to be treated,
TActiveAfter timer expiry, into corresponding battery saving mode.
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| CN109474975B (en) * | 2017-09-08 | 2022-04-12 | 西安中兴新软件有限责任公司 | Networking method and terminal, and Internet of things platform |
| CN117221986A (en) * | 2018-01-11 | 2023-12-12 | 松下电器（美国）知识产权公司 | Communication device, access point, and communication method |
| CN110739987A (en) * | 2018-10-16 | 2020-01-31 | 南京无疆界通信科技有限公司 | Low-voltage power line broadband carrier communication system |
| CN111245477B (en) * | 2020-01-16 | 2022-02-22 | 磐基技术有限公司 | Power failure detection method of communication equipment |
| CN111315003B (en) * | 2020-02-16 | 2022-08-19 | 重庆邮电大学 | PSM and EDRX power failure sleep method and terminal thereof |
| CN112396793A (en) * | 2020-10-27 | 2021-02-23 | 山东卡尔电气股份有限公司 | Linkage method and system of wireless smoke sensing terminal |
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| CN101599214A (en) * | 2009-07-13 | 2009-12-09 | 利尔达科技有限公司 | Networking low power consumption wireless meter reading method |
| CN102984866A (en) * | 2012-12-17 | 2013-03-20 | 湖南师范大学 | Intelligent power module for LED lamps, based on electric carrier waves with address control |
| CN104918339A (en) * | 2014-03-12 | 2015-09-16 | 国家电网公司 | Wireless sensor network communication control method and device |
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