CN104618996B - A kind of method and apparatus for the terminal for being used to wake up power save mode - Google Patents

A kind of method and apparatus for the terminal for being used to wake up power save mode Download PDF

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Publication number
CN104618996B
CN104618996B CN201510029107.3A CN201510029107A CN104618996B CN 104618996 B CN104618996 B CN 104618996B CN 201510029107 A CN201510029107 A CN 201510029107A CN 104618996 B CN104618996 B CN 104618996B
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timer
short cycle
terminal
wake
cycle timer
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CN104618996A (en
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李华
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New H3C Technologies Co Ltd
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New H3C Technologies Co Ltd
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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
    • 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
    • H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
    • 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

The invention discloses a kind of for waking up the method and apparatus of the terminal of power save mode.This method includes：Access point AP sets long period timer, and in the long period timer expiry, the wake-up message of first number is sent, and restart long period timer to the associated each terminals of AP；AP is when network side needs to send business datum to the associated terminals of the AP, start short cycle timer, during business datum is sent, the AP is in short cycle timer time-out, the wake-up message of second number is sent to the associated terminal, and restart short cycle timer, after the business datum is sent, stop or delete the short cycle timer；Wherein, the timing length of long period timer is more than the timing length of short cycle timer, and first number is more than second number.It can effectively solve the problem that using the embodiment of the present invention since terminal causes business datum to send failure or the slack problem of business datum transmission in a dormant state.

Description

A kind of method and apparatus for the terminal for being used to wake up power save mode
Technical field
The present invention relates to field of communication technology, more particularly to a kind of method and dress of the terminal for being used to wake up power save mode It puts.
Background technology
With the application of mobile Internet and big data, the indoor positioning technologies based on wlan network increasingly process hand can Heat suffers from bright application prospect in numerous industry such as retail, hotel, traffic, medical treatment.
Traditional WLAN location technologies depend on RSSI signal strengths, specific to be divided into following two method again：Base Triangulation location in signal transmission model and the fingerprint characteristic method based on signal sampling.Due to indoor multipath effect, barrier Etc. factors influence, RSSI value is highly unstable, leads to the unreliable of the positioning result based on RSSI value.And the positioning of a new generation System be based on so-called round-trip delay (Round-Trip Time, the RTT) time, rely on electromagnetic transmission speed it is constant not The characteristic of change, realizes higher precision, more stable locating effect at the defects of overcoming traditional RSSI alignment systems.
So-called RTT actives measurement and positioning method refers to such a positioning means：It is actively sent based on access point (AP) Message and the measurement behavior carried out, that is, sent from the AP of network side to terminal (STA) to be measured and measure request message, receive Response message is measured, obtains the measurement results such as two-way time, and and then calculates the distance of AP and terminal.
In the passive type alignment system based on RSSI value, AP only needs passively to receive the message of surrounding STA.And RTT proactive systems need AP actively to send measurement request message to STA around.Under common application scenarios, such as in quotient Under the scenes such as field, airport, STA to be positioned is all kinds of handheld terminals, such as mobile phone, PAD, this kind of handheld terminal due to The limitation of battery capacity, often into so-called energy saver mode.Within the energy saving period, due to chip be in suspend mode and nothing Method carries out effective packet sending and receiving, and therefore, AP can not effectively measure terminal in a dormant state at this time.
The phenomenon that almost all of handheld terminal can all frequently enter suspend mode, this is a universal.Therefore, for RTT For measurement and positioning system, in order to effectively be measured, need solution terminal that can not receive measurement under power save mode Request message is measured caused by request message to send failure and then cause to measure the problem of mortality is higher.
In addition, in group broadcasting video frequency plays application, there is also lead to video traffic in a dormant state due to terminal Data send failure or video traffic data send slack problem.
As it can be seen that in current network service data transmission applications, be widely present due to terminal in a dormant state and Business datum is caused to send failure or the slack problem of business datum transmission.
Invention content
In view of this, the present invention proposes a kind of for waking up the method and apparatus of the terminal of power save mode, can solve Since terminal causes business datum to send failure or the slack problem of business datum transmission in a dormant state.
Technical solution proposed by the present invention is：
A kind of method for the terminal for being used to wake up power save mode, this method include：
Access point AP sets long period timer, associated each to the AP in the long period timer expiry Terminal sends the wake-up message of first number, and restarts the long period timer；
AP starts short cycle timer, in business when network side needs to send business datum to the associated terminals of the AP During data are sent, the AP is in the short cycle timer time-out, to calling out for described associated terminal second number of transmission It wakes up message, and restarts the short cycle timer, after the business datum is sent, stop or delete the short period determining When device；
Wherein, the timing length of the long period timer is more than the timing length of the short cycle timer, and described the One number is more than second number.
A kind of for waking up the device of the terminal of power save mode, the device is located in access point AP, and mould is waken up including first Block and the second wake-up module；
First wake-up module, for setting long period timer, in the long period timer expiry, to described The associated each terminals of AP send the wake-up message of first number, and restart the long period timer；
Second wake-up module, for when network side needs to send business datum to the associated terminals of the AP, starting Short cycle timer, during business datum is sent, the AP is in the short cycle timer time-out, to the associated end End sends the wake-up message of second number, and restarts the short cycle timer, after the business datum is sent, stops Or delete the short cycle timer；
Wherein, the timing length of the long period timer is more than the timing length of the short cycle timer, and described the One number is more than second number.
As seen from the above technical solution, in the embodiment of the present invention, there is provided long period timer and short cycle timer, Middle long period timer continuously effective, short cycle timer is only just effective during actual traffic data is sent, long period timing Quantity forwarded relatively large number of message during device time-out, such as up to 10, the batch message of 20 are sent, and short cycle timer Quantity forwarded relatively small number of message when overtime, such as only send 1 message.
Since the message amount sent during long period timer expiry is more, under normal circumstances, if network side has largely Data issue terminal, terminal will wake up from dormant state, and therefore, by long period timer, AP can to close with it The terminal of connection will not rest on dormant state for a long time, and terminal is once waken up from dormant state, when can generally stop one section Between decide whether to enter dormant state again, therefore, carved at the beginning of the lateral terminal of network sends business datum, terminal is in The probability of wake-up states will increase, moreover, when network side needs to send business datum to terminal, AP can also start the short period Timer, in the short cycle timer time-out, AP currently need to be sent to network side business datum, the AP it is associated Terminal sends the less message of number, and in other words, AP is by responding short cycle timer, frequently and marginally to associated terminal It sends and wakes up message, therefore the probability that terminal is waken up and stays awake for can further increase.
Therefore, the embodiment of the present invention is combined by long period timer and short cycle timer, can significantly be increased The probability of terminal is waken up, terminal is avoided to enter dormant state, it is thus possible to effectively solve to lead in a dormant state due to terminal Business datum is caused to send failure or the slack problem of business datum transmission.
On the other hand, due to the timing length of long period timer is longer, is sent in response to long period timer wake-up Message amount is larger, and the timing length of short cycle timer is shorter, the wake-up message number that is sent in response to short cycle timer Measure it is less, also, long period timer continuously effective, short cycle timer only business datum send during effectively, therefore, Even if it can avoid continually sending a large amount of message numbers for waking up messages and leading to interface-free resources waste, also being able to avoid single transmission Measuring less but transmission frequency excessively frequently causes interface-free resources to waste.
As it can be seen that the embodiment of the present invention is by rationally setting timing length, the sound of long period timer and short cycle timer The term of validity of the message amount and timer transmitted by time-out time is answered, can not only effectively solve to stop since terminal is in Dormancy state and lead to that business datum sends failure or business datum sends slack problem, it can also enough avoiding eating dishes without rice or wine to provide Source excessively wastes, and saves interface-free resources.
Description of the drawings
Fig. 1 is the method flow diagram of the terminal provided in an embodiment of the present invention for being used to wake up power save mode.
Fig. 2 is that combination long and short period timer provided in an embodiment of the present invention sends the schematic diagram for waking up message.
Fig. 3 is by setting unicast cache tag and broadcasting the principle schematic of cache tag wake-up terminal.
Fig. 4 is the method flow diagram provided in an embodiment of the present invention that terminal is waken up in RTT measurement and positioning systems.
Fig. 5 is the hardware configuration connection figure of access point AP equipment provided in an embodiment of the present invention.
Fig. 6 is the apparatus structure schematic diagram of the terminal provided in an embodiment of the present invention for being used to wake up power save mode.
Specific embodiment
Cause business datum transmission failure or business datum transmission slack in a dormant state for due to terminal Problem, applicant carried out following analyses：When there is data message transmitting-receiving, terminal cannot be introduced into power save mode, by with The periodic packet sending and receiving of terminal can make terminal maximum probability within the entire time cycle be in active state.If however, AP carries out intensive, lasting flow with terminal and interacts, intensive in this way although ideal power save mode arousal function can be realized Flow interaction empty overhead it is very big, cause normal access service impacted, therefore, how can keep to be in section The effect that the terminal of energy state is waken up, and expense small as possible can be kept, into key to solve above-mentioned technical problem.
Based on above-mentioned analysis, an embodiment of the present invention provides a kind of for waking up the method for the terminal of power save mode, not only Good wake-up effect can be obtained, moreover, required expense is smaller, saves interface-free resources.
Fig. 1 is the method flow diagram of the terminal provided in an embodiment of the present invention for being used to wake up power save mode.
As shown in Figure 1, the flow includes：
Step 101, access point AP sets long period timer, in the long period timer expiry, is closed to the AP Each terminal of connection sends the wake-up message of first number, and restarts the long period timer.
Step 102, AP starts short period timing when network side needs to send business datum to the associated terminals of the AP Device, during business datum is sent, the AP sends second in the short cycle timer time-out, to the associated terminal The wake-up message of number, and restart the short cycle timer, after the business datum is sent, described in stopping or deletion Short cycle timer.
Wherein, the timing length of the long period timer is more than the timing length of the short cycle timer, and described the One number is more than second number, for example, first number can be with for 2 or more, second number can be only 1 It is a.
In method shown in Fig. 1, the effect of the long and short period timer of use is to control the frequency for being sent to terminal and waking up message Rate, that is, when the timer has lapsed, trigger the wake-up message sending action of AP.Wherein, the timing length of long period timer compared with It is long, such as 100ms or 200ms etc., and the timing length of short cycle timer is shorter, such as 10ms or 15ms etc..
In addition, when long period timer expires, the quantity of wake-up message that AP is sent is more, generally the wake-up report of batch Text, such as 10,20, and when short cycle timer expires, the negligible amounts of wake-up message that AP is sent, is typically only several It is a, such as 1,2 etc..
Furthermore long period timer is continuously effective, in other words, as long as being associated with arbitrary terminal under AP, no matter close Whether have that terminal is offline in all terminals of connection, as long as current associated terminal number is not 0, then long week has been switched on the AP Phase timer, when the long period timer expires, which sends to current associated terminal and wakes up message.And short period timing Device is only just effective when network side needs to send business datum to the associated terminals of AP, in other words, if network side works as the AP Preceding associated all terminals all do not need to send business datum, then short cycle timer or short period will not be set to determine on AP When device be in the state that is stopped, only AP knows that the associated at least one terminals of the AP need to receive the industry from network side During data of being engaged in, short cycle timer can be just opened, and when the short cycle timer expires on the AP, be come to needs reception The terminal of the business datum of network side, which is sent, wakes up message.
Fig. 2 is that combination long and short period timer provided in an embodiment of the present invention sends the schematic diagram for waking up message.
As shown in Fig. 2, the thickness of the lines wherein from AP sides to STA sides illustrates the number of the message amount of transmission, line The distance between item illustrates the length of interval time.Heavy line expression in Fig. 2 sends the in long period timer expiry The message of one number, the spacing between adjacent heavy line represent the timing length of long period timer, and fine line was represented in short week The message of second number is sent during phase timer expiry, when the spacing between adjacent fine line represents the timing of short cycle timer It is long.As shown in Fig. 2, long period timer is continuously effective, and the term of validity of short cycle timer, it is only necessary to cover business number According to sending duration.
When why method shown in FIG. 1 sets the timing of long period timer and short cycle timer in the manner described above The term of validity of message amount long, transmitted by response timeout event and timer, is because of long period timer and short period The effect of timer is different, specifically：
Long period timer is mainly used for that terminal is prevented to be in power save mode for a long time, i.e.,：Although it can not ensure all Type terminal juncture keeps active state, still, because waking up message with the presence of periodic batch, therefore ensures that terminal will not The suspend mode long time.Using long period timer, there are two advantages：First, the because wake-up of longer, the corresponding transmission of timer period Message amount is limited, therefore expense is smaller；Second is that laying the groundwork for short cycle timer, that is, short cycle timer is assisted to realize more excellent Wake-up effect.
Short cycle timer is mainly used for effectively waking up terminal during actual traffic data is sent, ensure at terminal juncture In active state, therefore the effect of short cycle timer directly sends effect hook with final business datum.Relative to long week Phase timer, since the timing length of short cycle timer is shorter, that is, the frequency for sending wake-up message is higher, therefore, the short period The corresponding expense of timer is big, in order to reduce the required expense of short cycle timer as possible, in the embodiment of the present invention, and short week The effective time of phase timer only needs the practical business datum sending time section of covering, is sent with protection in actual traffic data Period terminal is in active state, after business datum is sent, you can stops short cycle timer, to use smaller generation Valency sends effect to obtain preferable business datum.For example, when the embodiment of the present invention is applied in RTT positioning measurment systems, it is short The effective time of cycle timer only needs covering to need the period measured, i.e., only needs to cover RTT measurement periods, thus During network side performs RTT measurements action, terminal is made to be in active state, short cycle timer can be stopped after measurement.
In the embodiment of the present invention, long period timer can be that short cycle timer plays the role of auxiliary, if only Use short cycle timer, it is difficult to obtain preferable wake-up effect.This is because AP receives the measurement request from server Time point be uncertain, if not having long period timer, terminal is very possible for a long time in a dormant state, once eventually For a long time in a dormant state, unless a large amount of data interaction, a small amount of data interaction is generally difficult to wake up terminal at end, therefore, A small amount of message sending action that wakes up that short cycle timer time-out is caused can not wake up terminal.Therefore, the embodiment of the present invention By the combined use of long and short period timer, ideal wake-up effect can be realized.
As it can be seen that method shown in FIG. 1 is by rationally setting timing length, the sound of long period timer and short cycle timer The term of validity of the message amount and timer transmitted by time-out time is answered, can not only effectively solve to stop since terminal is in Dormancy state and lead to that business datum sends failure or business datum sends slack problem, it can also enough avoiding eating dishes without rice or wine to provide Source excessively wastes, and saves interface-free resources.
Although the method that long and short cycle timer shown in FIG. 1 is combined can obtain preferable wake-up effect, from The test result of practical various terminals on the market sees that, in order to save electric power, terminal meeting " moves heaven and earth ", as occasion serves Power save mode will be entered, therefore, in order to obtain more preferably wake-up effect, the basis of method shown in Fig. 1 of the embodiment of the present invention On, by network side " deception " method, further to improve wake-up effect.
Regulation of 802.11 agreements of IEEE to terminal energy-efficient treatment flow, i.e. terminal is utilized in network side " deception " method Periodically to check the cache tag in beacon messages, when find have the message for issuing itself when by certain interactive stream Journey caches message to obtain these.After terminal finds to be cached with the message to itself on AP, additional time-triggered protocol can be spent, That is the terminal is kept for the active time can be elongated.
Therefore, the embodiment of the present invention shows that network side has data by being 1 by the cache tag set in beacon messages The terminal is issued, to wake up the terminal.
However, there are two kinds of cache tags in beacon messages, one kind is broadcast cache tag, and another kind is for single Any cache tag set is specifically 1 by the unicast cache tag of a terminal, and applicant carried out following analyses：
Terminal type on the market is extensive, and the specific energy-efficient treatment flow of behind has differences, the terminal of certain manufacturers Broadcast cache tag can be handled, but the terminal of other manufacturer will not handle the label of these broadcast cachings.Why occur Such difference, mainly latter class manufacturer pursue better energy-saving effect, that is, it is all to think that broadcast caching message is destined to Terminal a, not too important category information, therefore can selectively ignore.
Based on above-mentioned analysis, in the embodiment of the present invention, it is preferable that will need to send out to it for network side in beacon messages The unicast cache tag of the terminal of business datum is sent and the set of non-broadcasting cache tag is 1, this is because unicast cache tag is Be separately provided for each terminal, that is to say, that be AP exclusively for some terminal buffers message, in general, this terminal does not have " reason " does not go to handle.It by unicast cache tag set be 1 compared to that will broadcast cache tag set is 1 with more preferably that this, which is also, The reason of wake-up effect.
It is further preferred that it can be sent to by the broadcast cache tag in beacon messages and for network side needs Unicast cache tag all set of the terminal of business datum is 1, so as to further improve wake-up effect.
About the specific setting of broadcast cache tag and unicast cache tag, can believe in the TIM of 802.11 agreements of IEEE It is carried out in breath field." Partial Virtual Bitmap " in TIM information fields can set above-mentioned label, wherein AID0 The bit of corresponding position represents broadcast cache tag, the bit of other AID value (1~2007) corresponding positions represents unicast and delays Deposit label.
Fig. 3 is by setting unicast cache tag and broadcasting the principle schematic of cache tag wake-up terminal.
As shown in figure 3, AP periodicity sending beacon messages, put broadcast cache tag in each beacon messages Position is 1, also, for associated and network side needs to be sent to the terminal of business datum with the AP, should by the terminal-pair Unicast cache tag also set be 1, corresponding terminal after beacon messages are received, detect broadcast cache tag and Unicast cache tag all set for the terminal is 1, therefore can stay for some time and wait for order caching message, i.e., in this section It is stayed awake in time.
Above-mentioned network side " deception " method can improve the terminal for needing to receive business datum and enliven to a certain extent Time, however, due to according to 802.11 agreements of IEEE, terminal is on AP to check by the cache tag in beacon messages It is no to have caching to the message of oneself, if so, then terminal can stay for a while, but be also only limitted to a smaller period more, Since actually AP is not really terminal buffers message at all, so terminal continues after a smaller period has been stopped Into power save mode.Therefore, the effect that the method that network side " deception " is used alone wakes up terminal be not it is ideal, But since the embodiment of the present invention is that itself and network side based on long and short cycle timer are given out a contract for a project what method was combined, Wake-up effect can be improved to a certain extent.
The embodiment of the present invention is given out a contract for a project by give out a contract for a project method, particularly network side of the network side based on long and short cycle timer Method is combined with network side " deception " method, effective wake-up can be realized to terminal, in actual test, the present invention is implemented Example has obviously wake-up effect, also, overall overhead is little to almost all kinds of terminal on the market.
The above-mentioned terminal awakening method that the embodiment of the present invention proposes can be applied to the various industry for needing to force to wake up terminal Data of being engaged in are sent in scene, for example, can be applied in RTT measurement and positioning systems, for another example, can be applied to multiple tablet electricity In the scene of brain device multicast video flowing.
Below by taking RTT measurement and positioning systems as an example, illustratively illustrate application of the embodiment of the present invention under concrete scene Details.
Due to the limitation of the battery capacity of handheld terminal, terminal often saves electricity by the way that WLAN chips is made to enter power save mode Power especially but will frequently enter power save mode when data volume is less or power save mode duration is elongated.Due to being in The terminal of power save mode, which can not be responded, extraneous issues its message, that is to say, that AP issues the message of terminal and will appear packet loss at this time Phenomenon.Packet loss in order to prevent, 802.11 agreements of IEEE specially devise the process flow of energy saving terminal, i.e.,：When terminal enter and Its associated AP is notified that when exiting dormant state, such associated AP, which can cache, issues the message of terminal, when terminal is in active These caching messages are obtained to the associated AP again during state, so as to which message solves the problems, such as packet loss.
The process flow of this energy saving terminal can effectively balanced energy conservation demand and reduction message packet loss, but the flow The function AP that places one's entire reliance upon associated by terminal of realization, i.e., power save mode variation notice dependent on terminal to associated AP.And For RTT measurement and positioning systems, since the coordinate for successfully determining terminal needs the participation of multiple AP, that is to say, that only related It is inadequate to join AP.For associated AP, can be sent when terminal being selected to be in active state according to the process flow of energy saving terminal Coordinate detection request message；But for the measurement AP other than dereferenced AP, since it can not know the power save mode of terminal, It can not select to give out a contract for a project when terminal is in active state, can thus encounter showing for packet loss when terminal is in power save mode As.
As it can be seen that in RTT measurement and positioning systems, being successfully determined the coordinate of some terminal needs associated AP and multiple measurements The common participation of AP, and AP is measured due to being unaware of the problem of power save mode variation of terminal can cause to measure failure.
The embodiment of the present invention is waken up by associated AP come the terminal to power save mode, and terminal is made to need to carry out RTT Active state is kept during measurement, so as to protect the success rate for the measurement behavior for measuring AP.Obviously, the measurement of all measurement AP Behavior should be all included in the wake-up protection act of associated AP, just can ensure that all measurement AP can measure success in this way. For this purpose, associated AP can be made to measure first by way of server scheduling, and the duration of short cycle timer will be covered It covers the period that all measurement AP carry out RTT measurements, such associated AP can protect the subsequent measurement success for measuring AP.
The embodiment of the present invention sends the frequency sum number for waking up message based on long and short period Timer Controlling to terminal to be measured Amount, that is, when long and short timer expires, triggering AP sends the wake-up message of different number；Wherein, macrocyclic timer is determined The period of justice is longer, such as 100ms or 200ms etc., and the period that short-period timer defines is relatively short, such as 10ms Or 15ms etc., when long period timer expires, relatively large number of wake-up message, such as 10, the batch message of 20 are sent, When short cycle timer expires, the relatively small number of wake-up message of quantity forwarded, such as only send 1 message.
Wherein, macrocyclic timer is mainly used for preventing terminal for a long time in power save mode, therefore, as long as AP ShiShimonoseki At least one terminal for needing to carry out RTT measurements is associated with, AP is upper with regard to always on long period timer.
The effect of short-period timer be RTT measurement and positioning systems are practical measure when effectively wake up terminal, really It protects terminal juncture and is in active state, therefore the wake-up effect of short cycle timer is directly linked up with final measurement effect.
Relative to macrocyclic timer, since the frequency that message is sent based on short cycle timer is higher, short week The corresponding expense for sending message of timer of phase is big, therefore, is needed as long as short cycle timer duration can cover The period to be measured, i.e.,：Active state is in for the terminal during RTT measurements action is protected to perform, measurement terminates After can stop this protection.Smaller cost can be thus used, to obtain preferable measurement effect.
But preferable wake-up effect only can not be obtained using only short cycle timer, it is come from because AP is received The time point of the measurement request of server is uncertain, if without the auxiliary of macrocyclic timer, terminal is very possible For a long time in a dormant state, so as to cause the failure of short cycle timer.Therefore, pass through the knot of the timer of long and short period It closes and uses, can realize ideal measurement effect.
It, can also be further combined with network side on the basis of the network side based on long and short cycle timer gives out a contract for a project method " deception " method wakes up terminal, to obtain better wake-up effect.
Fig. 4 is the method flow diagram provided in an embodiment of the present invention that terminal is waken up in RTT measurement and positioning systems.
As shown in figure 4, the flow includes：
Step 401, each AP in RTT measurement and positionings system obtains itself lower association STA list hung：[STA1, STA2, STA3 ... ...].
Step 402, AP is according to the association STA lists of itself, by " the Partial of the TIM fields in Beacon messages Broadcast cache tag and unicast corresponding with each STA in association STA lists caching in Virtual Bitmap " It is 1 to mark set, and with each beacon messages update when synchronize above-mentioned broadcast cache tag and unicast cache tag It is updated to 1.
Step 403, each AP starts for itself lower long period timer of association STA hung, period Tlong. The event for responding the long period timer expiry is：Calling out to each terminal first number of transmission under association STA lists respectively Awake message.
Wherein, first number can be multiple, and specific number is specified by server.Meanwhile as long as positioning on AP Function is opened, that is, as long as associated STA number is not 0 under the AP, which just always exists, specific with some STA it is whether offline unrelated.
Step 404, the AP in RTT measurement and positionings system receives the measurement request from server, and measurement request includes The MAC Address list of STA to be measured and measurement channel.
Step 405, the AP judges whether channel to be measured is consistent with the working channel of the AP, if the two is consistent, shows The AP is associated AP, enters step 406, and otherwise, it is to measure AP to show the AP, is directly entered step 409.
Step 406, which further obtains current measurement cycle Tprobe from the measurement request of server, which covers Lid is current to carry out the period of RTT measurements, and creates the disposable period as Tprobe timers.
In this step, in the measurement request that RTT measurement periods Tprobe carryings are sent in server, therefore, server can According to actual needs, dynamically to change RTT measurement periods Tprobe.As another embodiment, can also make an appointment RTT The value of measurement period Tprobe, then AP do not need to perform from measure ask in read the action of measurement period Tprobe, so that it may To know the value of measurement period Tprobe.
Step 407, which opens or creates short cycle timer, and period Tshort responds the short cycle timer Time out event be：1 wake-up message is sent to each terminal to be measured being associated in STA lists hung under the AP respectively.
Step 408, which responds the time out event of disposable Tprobe timers, that is, stop or delete using Tshort as The short cycle timer in period terminates the wake actions of current short cycle timer, terminates this flow.
Wherein, the effect of disposable Tprobe timers is to set the term of validity of short cycle timer, and the short period determines When device only during disposable Tprobe timers are run effectively, once disposable Tprobe timer expiries, then need Stop or delete short cycle timer.In practical application, the term of validity of other modes setting short cycle timer can also be used, The present invention is without limitation.
Step 409, which specifies according to server MAC Address, channel number, message amount send RTT measurements immediately Message terminates this flow.
As it can be seen that the embodiment of the present invention is by using various ways, including network side " deception " method, long and short cycle Timer combines method of giving out a contract for a project, and terminal can be realized and effectively waken up, in actual test, to almost all kinds of end on the market There is obviously energy saving wake-up effect at end, and overall overhead is not very big.
The scheme that the embodiment of the present invention proposes wakes up scheme as a kind of general energy saving terminal, can not only be applied to In RTT measurement and positioning systems, and other needs can be used in and force to wake up the application scenario of terminal.For example, it can be applied to In the scene of multiple tablet computer terminal multicast video playings.
In the application scenarios such as teaching practice in classroom, it is exactly to play spy by tablet computer to have an important content Fixed instructional video.In terms of technical standpoint, such video playing is usually all played out using multicast protocol, i.e. video content The tablet computer equipment of each student is sent in a manner of multicast message of eating dishes without rice or wine by server, via AP access devices.But in reality In trampling, although multicast protocol simplifies server and the media interactive stream of multiple terminal devices, due to it is wireless itself the characteristics of, The instantaneous receiving ability of each equipment is different, and the rate that AP access devices are sent to the multicast message eated dishes without rice or wine is caused to become non- It is often low.Therefore, generally the single flux of multicast of downlink can be switched to multiple unicast traffics, although flow of eating dishes without rice or wine is answered in AP sides More parts, but the significant increase of the rate due to single flow are made, whole user experience effect is still better than multicast mode.
The mode that multicast turns unicast is feasible for a small amount of terminal, but just will appear card when the number increase of terminal , mosaic phenomena such as.In view of number generally above 20 people, even more, therefore system is whole of each classroom student Body performance will decline, and can play the media of high definition code stream originally, can only reduce and play SD code stream, influence user experience. Why these problems are occurred, and major reason therein is exactly the suspend mode of terminal.
Since tablet computer is the tablet kind equipment using battery durable, regular entrance suspend mode is understood. Terminal notices AP access devices by sending the message with Power Save marker bits in advance, but wirelessly empty in classroom instruction scene The busy loss that can lead to message of mouth, such AP access devices would not be that it caches message；Simultaneously as from server Multicast code stream is real-time, therefore message during this period is all abandoned, and leads to interim card, mosaic phenomenon.
Further more, when tablet computers multiple on classroom play high definition code stream, it is that tablet computer suspend mode is delayed that can lead to AP sides The flow deposited overflows, so as to cause the loss of Streaming Media message.Although problem hair can be reduced by way of increasing buffering area Raw probability, but the message of actually a large amount of, multiple terminal enters, goes out buffer queue, necessarily leads to larger delay overhead, and Streaming media playing is an application for real-time class, can not be made up by subsequent supplement message mode.
As it can be seen that in group broadcasting video frequency plays application, there is also lead to video traffic in a dormant state due to terminal Data send failure or video traffic data send slack problem.
Failure is sent for above-mentioned video traffic data or video traffic data send slack problem, this may be used The terminal awakening method of inventive embodiments.Specifically, long period timer is run in the associated AP of these terminals, in long period During timer expiry, AP to associated terminal send first number wake-up message, then AP terminal operating it is important, During the business of real-time class, in the actual data traffic data transmission procedure of the business, for example, actually sending the video flowing phase Between, starting or create short cycle timer, the term of validity of the short cycle timer covers the period for issuing video stream data, During short cycle timer time-out, AP sends the wake-up message of second number to the terminal, by the combination of long and short cycle timer, The terminal is made not enter or enter less dormant state, effect is sent so as to promote business datum.
For the above method, the embodiment of the invention also discloses a kind of access point AP equipment.
Fig. 5 is the hardware configuration connection figure of access point AP equipment provided in an embodiment of the present invention.
As shown in figure 5, access point AP includes processor, network interface, memory and nonvolatile memory, and above-mentioned each Hardware is connected by bus, wherein：
Nonvolatile memory, for storing instruction code；The operation that described instruction code is completed when being executed by processor The function that the device for being used to wake up the terminal of power save mode predominantly in memory is completed.
Processor, for communicating with nonvolatile memory, read and perform stored in nonvolatile memory it is described Instruction code completes the function that the device of the above-mentioned terminal for being used to wake up power save mode is completed.
Memory, when the operation that the described instruction code in nonvolatile memory is performed completion is mainly in memory For waking up the function of the device of the terminal of power save mode completion.
For software view, applied to the device such as Fig. 6 institutes for being used to wake up the terminal of power save mode in access point AP Show.
Fig. 6 is the apparatus structure schematic diagram of the terminal provided in an embodiment of the present invention for being used to wake up power save mode.
As shown in fig. 6, the device includes the first wake-up module 601 and the second wake-up module 602.
First wake-up module 601, for setting long period timer, in the long period timer expiry, to described The associated each terminals of AP send the wake-up message of first number, and restart the long period timer.
Second wake-up module 602, for when network side needs to send business datum to the associated terminals of the AP, starting short Cycle timer, during business datum is sent, the AP is in the short cycle timer time-out, to the associated terminal Send the wake-up message of second number, and restart the short cycle timer, after the business datum is sent, stop or Delete the short cycle timer.
Wherein, the timing length of the long period timer is more than the timing length of the short cycle timer, and described the One number is more than second number.
The device can also include third wake-up module.
The third wake-up module, for determining that associated with the AP and network side needs to be sent to business datum Terminal, by the terminal, corresponding unicast cache tag set is 1 in beacon beacon messages.
The third wake-up module, can be also used for the broadcast cache tag set in beacon beacon messages is 1.
First number can be with for 2 or more, second number can be with for 1.
The business datum can be that Loop Round Trip Time RTT measures request message.
Second wake-up module 602 can be used for receiving RTT measurement requests, end to be measured extracted from described measure in request The measurement channel at end when the measurement channel is identical with the working channel of the AP, starts short cycle timer, and by the short week The term of validity of phase timer is set as not less than RTT measurement periods, and the short cycle timer is in the term of validity after time-out Restart, after the term of validity, stop or delete the short cycle timer.
Wherein, the second wake-up module 602 can be used for when the measurement channel is identical with the working channel of the AP, from institute It states in measurement request and extracts RTT measurement period information.
Second wake-up module 602 can be also used for extracting RTT measurement period information in request from described measure, start short Cycle timer and disposable supervision timer, the timing length of the supervision timer are not less than the RTT measurement periods, During the supervision timer is run, restart after the short cycle timer time-out, after supervision timer failure, stop Only or delete the short cycle timer.
The above-mentioned device for being used to wake up the terminal of power save mode is to pass through place as the device on a logical meaning Computer program instructions corresponding in nonvolatile memory are read what operation in memory was formed by reason device.When corresponding calculating Machine program instruction is performed, and formation is used for for waking up the device of the terminal of power save mode according to the use in above-described embodiment Corresponding operating is performed in the method for the terminal for waking up power save mode.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention Any modification, equivalent substitution, improvement and etc. done within refreshing and principle, should be included within the scope of protection of the invention.

Claims (10)

  1. A kind of 1. method for the terminal for being used to wake up power save mode, which is characterized in that this method includes：
    Access point AP sets long period timer, in the long period timer expiry, to the associated each terminals of the AP The wake-up message of first number is sent, and restarts the long period timer；
    AP starts short cycle timer, in business datum when network side needs to send business datum to the associated terminals of the AP During transmission, the AP sends the wake-up report of second number to the associated terminal in the short cycle timer time-out Text, and restart the short cycle timer, after the business datum is sent, stop or delete the short period timing Device；
    Wherein, the timing length of the long period timer be more than the short cycle timer timing length, described first Number is more than second number；
    Wherein, the business datum measures request message for Loop Round Trip Time RTT；
    AP starts short cycle timer and includes when network side needs to send business datum to the associated terminals of the AP：
    AP receives RTT and measures request, and the measurement channel of terminal to be measured is extracted in request from described measure, when the measurement channel with When the working channel of the AP is identical, which starts short cycle timer, and the term of validity of the short cycle timer is set as Not less than RTT measurement periods, the short cycle timer is restarted in the term of validity after time-out, after the term of validity, Stop or delete the short cycle timer.
  2. 2. according to the method described in claim 1, it is characterized in that, this method further includes：
    AP determines that and network side associated with the AP needs to be sent to the terminal of business datum, by the terminal in beacon Corresponding unicast cache tag set is 1 in beacon messages.
  3. 3. according to the method described in claim 2, it is characterized in that, this method further includes：
    Broadcast cache tag set in beacon beacon messages is 1 by AP.
  4. 4. according to the method described in claim 1, it is characterized in that, first number is 2 or more, second number is 1.
  5. 5. according to the method described in claim 1, it is characterized in that, the term of validity of the short cycle timer is set as not small Include in RTT measurement periods：
    Start disposable supervision timer, the timing length of the supervision timer is not less than RTT measurement periods, in the prison During being run depending on timer, restart after the short cycle timer time-out, after supervision timer failure, stop or delete The short cycle timer.
  6. 6. according to the method described in claim 1, it is characterized in that, before AP startup short cycle timers, this method is also wrapped It includes：
    The AP extracts RTT measurement periods from described measure in request.
  7. It is 7. a kind of for waking up the device of the terminal of power save mode, which is characterized in that the device is located in access point AP, including the One wake-up module and the second wake-up module；
    First wake-up module for setting long period timer, in the long period timer expiry, is closed to the AP Each terminal of connection sends the wake-up message of first number, and restarts the long period timer；
    Second wake-up module, for when network side needs to send business datum to the associated terminals of the AP, starting short week Phase timer, during business datum is sent, the AP is sent out in the short cycle timer time-out to the associated terminal The wake-up message of second number is sent, and restarts the short cycle timer, after the business datum is sent, stops or deletes Except the short cycle timer；
    Wherein, the timing length of the long period timer be more than the short cycle timer timing length, described first Number is more than second number；
    Wherein, the business datum is sent measures request message for Loop Round Trip Time RTT；
    Second wake-up module measures request for receiving RTT, and the measurement of terminal to be measured is extracted from the measurement request Channel when the measurement channel is identical with the working channel of the AP, starts short cycle timer, and by the short cycle timer The term of validity be set as not less than RTT measurement periods, the short cycle timer is restarted in the term of validity after time-out, described After the term of validity, stop or delete the short cycle timer.
  8. 8. device according to claim 7, which is characterized in that the device further includes third wake-up module；
    The third wake-up module needs to be sent to the terminal of business datum for the determining associated and network side with the AP, By the terminal, corresponding unicast cache tag set is 1 in beacon beacon messages.
  9. 9. device according to claim 8, which is characterized in that
    The third wake-up module, for being 1 by the broadcast cache tag set in beacon beacon messages.
  10. 10. device according to claim 7, which is characterized in that
    Second wake-up module, for when the measurement channel is identical with the working channel of the AP, being measured in request from described RTT measurement period information is extracted, starts short cycle timer and disposable supervision timer, the timing of the supervision timer Duration is not less than the RTT measurement periods, during the supervision timer is run, weight after the short cycle timer time-out It opens, after supervision timer failure, stops or delete the short cycle timer.
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CN106304359B (en) * 2016-07-28 2019-08-02 西北工业大学 User terminal energy conservation optimizing method and user terminal apparatus under intensive user scene
CN106452960B (en) * 2016-10-11 2019-09-24 郑州云海信息技术有限公司 It is a kind of based on multicomputer system emulation message time-out determine method and device
CN107526603B (en) * 2017-09-20 2021-01-08 深圳天珑无线科技有限公司 Application awakening method and device
CN108065576A (en) * 2017-11-29 2018-05-25 厦门欣维发实业有限公司 A kind of anti-theft intelligent knapsack and its control method
KR102013258B1 (en) * 2017-12-13 2019-08-22 (주)에프씨아이 Apparatus and Method for Transmitting/receiving a Packet in Low Power Sleep Modes
WO2021007824A1 (en) * 2019-07-17 2021-01-21 北京小米移动软件有限公司 Wake-up signal processing method and apparatus, information issuing method and apparatus, communication device, and medium
CN113133092B (en) * 2019-12-30 2022-07-22 华为技术有限公司 Energy-saving control method and related equipment
CN113141626B (en) * 2021-03-29 2022-08-19 杭州涂鸦信息技术有限公司 Event sending method, system, terminal equipment and related device
CN116320147B (en) * 2023-02-17 2023-11-17 荣耀终端有限公司 Awakening method and electronic equipment

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