CN101969605B - Method and equipment for determining DTIM interval by wireless access point (AP) - Google Patents
Method and equipment for determining DTIM interval by wireless access point (AP) Download PDFInfo
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- CN101969605B CN101969605B CN201010502278.0A CN201010502278A CN101969605B CN 101969605 B CN101969605 B CN 101969605B CN 201010502278 A CN201010502278 A CN 201010502278A CN 101969605 B CN101969605 B CN 101969605B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a method and equipment for determining delivery traffic indication map (DTIM) interval by an access point (AP). The method comprises the following steps: the AP stores the correspondence between the service function and the DTIM interval; and the AP obtains the service function of the workstation accessed to the AP, searches the correspondence according to the obtained service function of the workstation and determines the DTIM interval according to the searched minimum DTIM interval. The invention has the following advantages: in the invention, the AP stores the correspondence between the priority of the service function and the DTIM interval and determines the DTIM interval according to the priority of the service function of the workstation, thus being capable of making corresponding adjustment when the priority of the service function of the workstation differs or changes and avoiding reduction of the energy saving efficiency of the wireless workstation while meeting the real-time requirement of the workstation.
Description
Technical field
The present invention relates to the communications field, relate in particular to the method and apparatus that a kind of AP determines DTIM interval.
Background technology
The mobility of wireless network requires the power supply supply of work station to use battery, but the electric power of battery is limited, is merely able to maintain some times.The transceiver of workstation configuration (Transceiver) can be opened or close, and while closing transceiver, work station enters dormancy (sleeping) pattern, and while opening transceiver, work station enters (awake) pattern of reviving.Work station can not sacrifice the quality that is connected of wireless network in park mode and the switching between wake mode.
In order to save the power consumption of work station, need to extend the time of work station dormancy as far as possible, reduce the time that work station is revived.In Infrastructure (all wireless stations of same BSS (Basic Service Set, basic service set) communicate by AP) network, the power management of work station (dormancy time or recovery time) can be controlled by AP.AP possesses two tasks relevant to power management: one, and AP knows the power management states of every connected work station, needs only this work station in wake mode, AP is sent to this work station by frame, otherwise is this work station caching frame; Its two, AP periodically announces buffer status (frame of buffer memory), to allow the work station of park mode learn, extract waiting frame.
Concrete, AP sends Beacon (beacon) frame at set intervals, is used for announcing the existence of 802.11 networks.In Beacon frame, except comprising the information of BSS (Basic Service Set, basic service set) parameter, also comprise the information of AP caching frame, in order to indicate work station to receive corresponding caching frame.The chronomere of Beacon Interval (interval) is abbreviated as TU conventionally, represents 1024 microseconds, and BeaconInterval can be set to 100Ge chronomere conventionally, is equivalent to every 100 milliseconds and sends a Beacon frame.
As shown in Figure 1, AP is wireless stations buffer memory unicast frame (at least buffer memory listen Interval time), and whether needs at TIM (Traffic Indication Map, data information to be passed) indication work station the data that receive.The wireless stations of park mode is waken up after at interval of listen Interval, checks the indication information in TIM, if there is the unicast frame of self correspondence, by PS-POLL frame, obtains the unicast frame that AP is its buffer memory.
As shown in Figure 2, AP is the broadcast of all wireless stations buffer memorys and multicast frame (buffer memory DTIM (Delivery TIM at least, data transmission of information to be passed) interval time), when DTIM arrives constantly, send broadcast and the multicast frame of all buffer memorys, simultaneously AP has carried TIM information in Beacon frame, and whether notice wireless stations AP the unicast frame of promising its buffer memory.The wireless stations of park mode is waken up behind each DTIM interval, broadcast and multicast frame that reception AP is its buffer memory, receive after broadcast and multicast frame, wireless stations can be monitored the TIM information in DTIM simultaneously, if there is the unicast frame of self correspondence, by PS-POLL frame, obtains the unicast frame that AP is its buffer memory again.Wireless stations receives after all frames (comprising clean culture/broadcast/multicast frames), enters power down mode, until the next Listen Interval moment (DTIM interval time) wakes up.
In prior art, the listen interval of work station determines according to the DTIM spacing parameter of AP.The DTIM spacing parameter of AP is manual setting on AP, therefore, after DTIM spacing parameter on AP is set up, the work station of AP association is determined listen interval according to this DTIM spacing parameter, and according to identical listen interval, monitors the Beacon message of AP.
But, the setting principle at existing DTIM interval is uncertain, the default value at DTIM interval is 1, the moment after each Beacon Interval is the DTIM moment, work station business function requirement of real-time under AP is low, during to delay-insensitive, the set-up mode at this DTIM interval has reduced the energy-saving efficiency of wireless stations.
Summary of the invention
The invention provides the method and apparatus that a kind of AP determines DTIM interval, make AP can adjust flexibly the size at DTIM interval.
The invention provides a kind of wireless access point AP and determine the method at DTIM interval, be applied to comprise in the system of described AP and the work station of the described AP of access, work station arranges the listening intervals Listen Interval of self according to the DTIM interval of carrying in the Beacon message of AP, the method comprises:
The corresponding relation at described AP storage service function and DTIM interval;
Described AP obtains the business function of the work station of access with it, according to the business function of the work station obtaining, searches described corresponding relation, according to the minimum DTIM interval finding, determines DTIM interval.
Described AP obtains the business function of the work station of access with it, according to the business function of the work station obtaining, search described corresponding relation, according to the minimum DTIM interval finding, determine that DTIM interval comprises: described AP obtains the business function of work station in each DTIM interval and searches described corresponding relation, when the minimum DTIM interval finding is less than current DTIM interval, while finishing at current DTIM interval, adjust the minimum DTIM interval that DTIM finds described in being spaced apart.
Described AP obtains the business function of the work station of access with it, according to the business function of the work station obtaining, searches described corresponding relation, according to the minimum DTIM interval finding, determines DTIM interval, further comprises:
The minimum DTIM interval that the minimum DTIM interval that described AP finds in Preset Time is all greater than in the DTIM interval at due in place of current DTIM interval and this Preset Time is greater than current DTIM interval, tunes up DTIM interval while finishing at the DTIM interval at this due in place.
When finish at the DTIM interval at this due in place, tuning up described DTIM interval comprises: DTIM interval is adjusted into the minimum DTIM interval finding in Preset Time; Or DTIM interval is adjusted into the DTIM interval of low one-level according to default DTIM grade.
Also comprise: if preset continuously the minimum DTIM interval finding in the DTIM interval of number, be greater than current DTIM interval, while finishing at the DTIM interval of described default number, DTIM interval be adjusted into the minimum DTIM interval finding in the DTIM interval of continuously default number.
Described AP obtains the business function of the work station of access with it, according to the business function of the work station obtaining, search described corresponding relation, according to the minimum DTIM interval finding, determine that DTIM interval comprises: described AP obtains the business function of work station in Preset Time, according to the business function of the work station obtaining, search described corresponding relation, obtain minimum DTIM interval in Preset Time, while finishing at current DTIM interval, adjust DTIM and be spaced apart described minimum DTIM interval.
The business function that described AP obtains work station comprises: described AP detects the traffic priority field of service message, obtains the business function of work station according to the corresponding relation of service priority and business function.
A WAP (wireless access point), is applied to comprise that in the system of wireless access point AP and the work station of the described AP of access, work station arranges the listening intervals Listen Interval of self according to the DTIM interval of carrying in the Beacon message of AP, and this WAP (wireless access point) comprises:
Memory cell, for the corresponding relation at storage service function and DTIM interval;
Acquiring unit, for obtaining the business function of the work station accessing with described AP;
Determining unit, is connected with acquiring unit with described memory cell, for searching described corresponding relation according to the business function of the work station obtaining, according to the minimum DTIM interval finding, determines DTIM interval.
Described acquiring unit is specifically for obtaining the business function of work station in each DTIM interval; Described determining unit specifically for: according to the business function of the work station obtaining, search minimum DTIM interval, when the minimum DTIM interval finding is less than current DTIM interval, while finishing at current DTIM interval, adjust the minimum DTIM interval that DTIM finds described in being spaced apart.
The minimum DTIM interval that described determining unit is also all greater than in the DTIM interval at due in place of current DTIM interval and this Preset Time for: the minimum DTIM interval finding in Preset Time is greater than current DTIM interval, tunes up DTIM interval while finishing at the DTIM interval at this due in place.
Described determining unit also for: while finishing at the DTIM interval at this due in place, DTIM interval is adjusted into the minimum DTIM interval finding in Preset Time; Or DTIM interval is adjusted into the DTIM interval of low one-level according to default DTIM grade.
Described determining unit also for: if the minimum DTIM interval finding in the DTIM interval of default number is continuously greater than current DTIM interval, while finishing at the DTIM interval of described default number, DTIM interval is adjusted into the minimum DTIM interval finding in the DTIM interval of continuously default number.
Described acquiring unit is also for the business function that obtains work station in Preset Time;
Described determining unit also for: according to the business function of the work station obtaining, search described corresponding relation, obtain minimum DTIM interval in Preset Time, while finishing at current DTIM interval, adjust DTIM and be spaced apart described minimum DTIM interval.
Described acquiring unit specifically for: detect the traffic priority field of service message, according to the corresponding relation of service priority and business function, obtain the business function of work station.
Compared with prior art, the present invention at least has the following advantages:
In the present invention, the priority of AP storage service function and the corresponding relation at DTIM interval, according to the priority of the business function of work station, determine DTIM interval, thereby when the priority of the business function of work station is different or change, can correspondingly adjust, when meeting work station requirement of real-time, avoid reducing the energy-saving efficiency of wireless stations.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of AP buffer memory unicast frame in prior art;
Fig. 2 is the schematic diagram of AP buffer memory broadcast and multicast frame in prior art;
Fig. 3 is the schematic flow sheet of the method at definite DTIM provided by the invention interval;
Fig. 4 is the schematic flow sheet of the method at definite DTIM provided by the invention interval;
Fig. 5 and Fig. 6 are the structural representations of WAP (wireless access point) provided by the invention.
Embodiment
Core concept of the present invention is: AP adjusts DTIM interval according to the priority of the business function of work station.
The priority of AP storage service function and the corresponding relation at DTIM interval, according to the above-mentioned corresponding relation of the limit priority of the business function of the work station getting and storage, determine DTIM interval.
AP provides following two schemes:
The priority (limit priority of being selected by user) of the business function of the work station of the first scheme: AP reception user input, according to this priority search self storage priority and the corresponding relation at DTIM interval, obtain corresponding DTIM interval, in Beacon message, carry this DTIM interval, each work station arranges the listen interval of self according to this Beacon message.The corresponding relation of this DTIM interval and priority according to actual needs (for example empirical value) is set, because the DTIM interval of carrying in Beacon message is corresponding with the limit priority of the business function of work station, therefore can meet the requirement of real-time of work station business function, simultaneously when the requirement of real-time of this work station is not high, the DTIM interval arranging according to the limit priority of the business function of work station can be not too small yet, to such an extent as to reduce the energy-saving efficiency of wireless stations.
First scheme: the priority of the business function of AP active obtaining work station, according to the priority of the business function of the work station getting, determine DTIM interval.
The traffic priority field of the service message at AP testing station under this scheme, knows the priority of the business function of work station according to the value of this field.Concrete, the traffic priority field that AP detects service message is the 802.11E User Priority (0 to 7) according to service message, this priority is carried in the QOScontrol of message field field, and 802.11E User Priority and type of service corresponding relation are as shown in table 1.
Table 1
In service message as shown in table 1, carry service priority, correspond respectively to identical or different business functions.For same business function, conventionally to time delay require identically, therefore, in the present invention, according to the different demarcation DTIM interval of business function, and set up the corresponding relation of DTIM interval and business function.In shown in table 1, business function is divided into four classes, therefore business function is divided into four priority, the DTIM interval that each priority is corresponding different.
The end-to-end Qos time delay empirical value of several typical services of IPTV requires as follows, the delay of net cast requires, the delay of video request program requires, the delay of video telephone/video conference requires, it is≤200ms that background stream can not require delay that the delay of internet game requires.According to these time delay empirical values, we are divided into 4 classes by wireless traffic message ,≤150ms corresponding A C_VO, and≤1000ms corresponding A C_VI ,≤2000ms corresponding A C_BE, to time delay no requirement (NR) corresponding A C_BK.The transmission atomic operation of a message generally can not surpass 15ms, and (message that sends 1500 bytes as 11g 1M speed needs 13.3ms, comprise DIFS, SIFS and message, ACK transmitting time), DTIM adjustable extent is 1～31 (unit is beacon interval), a beacon interval adjustable extent is 32～8191TU (1TU=1024us), and acquiescence beacon interval is 100 TU.
According to above-mentioned Qos time delay empirical value, in the present invention, can set up the corresponding relation at business function and DTIM interval, as shown in table 2.
Table 2
It should be noted that, above-mentioned table 2 is only that a kind of specific implementation of the present invention is given an example, it will be appreciated by those skilled in the art that, the concrete form of table 2 (such as whether comprising DTIM grade, time delay etc.) can be adjusted according to actual needs flexibly, and the DTIM interval value in this table 2 also can be adjusted according to actual needs.
Lower mask body introduction is according to the corresponding relation at business function shown in table 2 and DTIM interval, and the step of the method at definite DTIM provided by the invention interval, as shown in Figure 3, comprising:
Step 301, AP obtains minimum DTIM interval corresponding to each DTIM interval according to the business function of work station in each DTIM interval.
The traffic priority field concrete, the message that AP detects each DTIM interval in and all working station of lower extension is mutual carries, further obtains the business function of corresponding work station according to this field value.Then business function shown in look-up table 2 and the corresponding relation at DTIM interval are known the DTIM interval corresponding to business function of work station, from DTIM interval corresponding to the business function at all working station, obtain minimum DTIM interval.
Step 302, the minimum DTIM interval obtaining in the more current DTIM of AP interval and the size at current DTIM interval, if minimum DTIM interval is less than current DTIM interval, execution step 303; Otherwise, execution step 304.
Step 303, adjusts DTIM and is spaced apart minimum DTIM interval while finishing at current DTIM interval.
Step 304, the minimum DTIM interval that the minimum DTIM interval that AP finds in Preset Time is all greater than in the DTIM interval at due in place of current DTIM interval and this Preset Time is greater than current DTIM interval, tunes up DTIM interval while finishing at the DTIM interval at this due in place.
Concrete, AP can add up the minimum DTIM interval finding and be greater than continuously current DTIM interlude, minimum DTIM interval in the DTIM interval at this time arrival Preset Time and this due in place is greater than current DTIM interval, tunes up DTIM interval while finishing at the DTIM interval at this due in place.For example AP arranges timer, if the minimum DTIM interval finding is greater than current DTIM interval, the normal timing of timer; If the minimum DTIM interval finding is less than or equal to current DTIM interval, timer reclocking.
While wherein, finishing at the DTIM interval at this due in place, tuning up DTIM interval can comprise: DTIM interval is adjusted into the minimum DTIM interval finding in Preset Time; Or according to default DTIM grade, DTIM interval is adjusted into the DTIM interval of low one-level, routine DTIM as shown in table 2 interval is divided into 4 grades, current DTIM interval can be turned down to a grade.Thus, improve the energy-saving efficiency of wireless stations, timing adjustment can guarantee the stability at DTIM interval, is unlikely to frequent adjustment.
Step 305, after the DTIM interval adjustment of AP completes, is the clean culture of wireless stations and the DTIM interlude after broadcast/group broadcast frame buffer adjustment.
Step 306, the DTIM interval that wireless stations can arrange according to AP resets listeninterval, wakes up and receive AP for broadcast and the multicast frame of its buffer memory after listen interval, sends the unicast frame that PS-POLL frame obtains buffer memory simultaneously.
The method at definite DTIM provided by the invention interval can also have other implementations, as shown in 4, comprising:
Step 401, AP obtains minimum DTIM interval corresponding to each DTIM interval according to the business function of work station in each DTIM interval.
Step 402, the minimum DTIM interval obtaining in the more current DTIM of AP interval and the size at current DTIM interval, if minimum DTIM interval is less than current DTIM interval, execution step 403; Otherwise, execution step 404.
Step 403, adjusts DTIM and is spaced apart minimum DTIM interval while finishing at current DTIM interval.
Step 404, AP obtains the business function of work station in next DTIM interval; If the minimum DTIM interval finding in the DTIM interval of default number is continuously greater than current DTIM interval, while finishing at the DTIM interval of default number, DTIM interval is adjusted into the minimum DTIM interval finding in the DTIM interval of continuously default number.
Wherein, this default number can arrange according to actual needs, and the present invention does not limit this.
Step 405, after the DTIM interval adjustment of AP completes, is the clean culture of wireless stations and the DTIM interlude after broadcast/group broadcast frame buffer adjustment.
Step 406, the DTIM interval that wireless stations can arrange according to AP resets listeninterval, wakes up and receive AP for broadcast and the multicast frame of its buffer memory after listen interval, sends the unicast frame that PS-POLL frame obtains buffer memory simultaneously.
In addition, in the present invention, AP can also be set to obtain the business function of work station in Preset Time, according to the corresponding relation shown in the business function look-up table 2 of the work station obtaining, obtain minimum DTIM interval in Preset Time, while finishing at current DTIM interval, adjust DTIM and be spaced apart minimum DTIM interval.In this case, AP does not need the minimum DTIM interval that relatively obtains and the size at current DTIM interval, and the value of this Preset Time can be set flexibly, for example, get 10Beacon interval, and the present invention does not limit this.
The invention provides a kind of WAP (wireless access point), be applied to comprise in the system of wireless access point AP and the work station of the described AP of access, work station arranges the listening intervals Listen Interval of self according to the DTIM interval of carrying in the Beacon message of AP, as shown in Figure 5, this WAP (wireless access point) comprises:
Memory cell 11, for the corresponding relation at storage service function and DTIM interval;
Acquiring unit 12, for obtaining the business function of the work station accessing with described AP;
Determining unit 13, is connected with acquiring unit 12 with described memory cell 11, for searching described corresponding relation according to the business function of the work station obtaining, according to the minimum DTIM interval finding, determines DTIM interval.
Described acquiring unit 12 is specifically for obtaining the business function of work station in each DTIM interval; Described determining unit 13 specifically for: according to the business function of the work station obtaining, search minimum DTIM interval, when the minimum DTIM interval finding is less than current DTIM interval, while finishing at current DTIM interval, adjust the minimum DTIM interval that DTIM finds described in being spaced apart.
The minimum DTIM interval that described determining unit 13 is also all greater than in the DTIM interval at due in place of current DTIM interval and this Preset Time for: the minimum DTIM interval finding in Preset Time is greater than current DTIM interval, tunes up DTIM interval while finishing at the DTIM interval at this due in place.
Described determining unit 13 also for: while finishing at the DTIM interval at this due in place, DTIM interval is adjusted into the minimum DTIM interval finding in Preset Time; Or DTIM interval is adjusted into the DTIM interval of low one-level according to default DTIM grade.
Described determining unit 13 also for: if the minimum DTIM interval finding in the DTIM interval of default number is continuously greater than current DTIM interval, while finishing at the DTIM interval of described default number, DTIM interval is adjusted into the minimum DTIM interval finding in the DTIM interval of continuously default number.
Described acquiring unit 12 is also for the business function that obtains work station in Preset Time; Accordingly, described determining unit 13 also for: according to the business function of the work station obtaining, search described corresponding relation, obtain minimum DTIM interval in Preset Time, while finishing at current DTIM interval, adjust DTIM and be spaced apart described minimum DTIM interval.
Described acquiring unit 12 specifically for: detect the traffic priority field of service message, according to the corresponding relation of service priority and business function, obtain the business function of work station.
As shown in Figure 6, this WAP (wireless access point) can also comprise:
Timing unit 14, is connected with described determining unit 13, normal timing while being greater than current DTIM interval for the minimum DTIM interval when finding, otherwise reclocking;
Described determining unit 13, be connected with described timing unit 14, for the minimum DTIM interval finding in the timing arrival Preset Time of described timing unit and the DTIM interval at this due in place, be greater than current DTIM interval, while finishing at the DTIM interval at this due in place, tune up described DTIM interval.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Understanding based on such, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, or the network equipment etc.) carry out the method described in each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device in embodiment can be distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into a plurality of submodules.
Disclosed is above only several specific embodiment of the present invention, and still, the present invention is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (14)
1. the method at a wireless access point AP specified data transmission of information DTIM to be passed interval, be applied to comprise in the system of described AP and the work station of the described AP of access, work station arranges the listening intervals Listen Interval of self according to the DTIM interval of carrying in the Beacon message of AP, it is characterized in that, the method comprises:
The corresponding relation at described AP storage service function and DTIM interval;
Described AP obtains the business function of the work station of access with it, according to the business function of the work station obtaining, searches described corresponding relation, according to the minimum DTIM interval finding, determines DTIM interval;
Wherein, the corresponding relation at described business function and DTIM interval, is specially: the DTIM interval that business function that requirement of real-time is higher is corresponding is less, and the DTIM interval that business function that requirement of real-time is lower is corresponding is larger.
2. the method for claim 1, it is characterized in that, described AP obtains the business function of the work station of access with it, according to the business function of the work station obtaining, search described corresponding relation, according to the minimum DTIM interval finding, determine that DTIM interval comprises: described AP obtains the business function of work station in each DTIM interval and searches described corresponding relation, when the minimum DTIM interval finding is less than current DTIM interval, while finishing at current DTIM interval, adjust the minimum DTIM interval that DTIM finds described in being spaced apart.
3. method as claimed in claim 2, it is characterized in that, described AP obtains the business function of the work station of access with it, according to the business function of the work station obtaining, searches described corresponding relation, according to the minimum DTIM interval finding, determine DTIM interval, further comprise:
The minimum DTIM interval that the minimum DTIM interval that described AP finds in Preset Time is all greater than in the DTIM interval at due in place of current DTIM interval and this Preset Time is greater than current DTIM interval, tunes up DTIM interval while finishing at the DTIM interval at this due in place.
4. method as claimed in claim 3, is characterized in that, tunes up described DTIM interval and comprise while finishing at the DTIM interval at this due in place: DTIM interval is adjusted into the minimum DTIM interval finding in Preset Time; Or DTIM interval is adjusted into the DTIM interval of low one-level according to default DTIM grade.
5. method as claimed in claim 2, it is characterized in that, described AP obtains the business function of the work station of access with it, according to the business function of the work station obtaining, search described corresponding relation, according to the minimum DTIM interval finding, determine DTIM interval, also comprise: if preset continuously the minimum DTIM interval finding in the DTIM interval of number, be greater than current DTIM interval, while finishing at the DTIM interval of described default number, DTIM interval be adjusted into the minimum DTIM interval finding in the DTIM interval of continuously default number.
6. the method for claim 1, it is characterized in that, described AP obtains the business function of the work station of access with it, according to the business function of the work station obtaining, search described corresponding relation, according to the minimum DTIM interval finding, determine that DTIM interval comprises: described AP obtains the business function of work station in Preset Time, according to the business function of the work station obtaining, search described corresponding relation, obtain minimum DTIM interval in Preset Time, while finishing at current DTIM interval, adjust DTIM and be spaced apart described minimum DTIM interval.
7. the method for claim 1, is characterized in that, the business function that described AP obtains work station comprises: described AP detects the traffic priority field of service message, obtains the business function of work station according to the corresponding relation of service priority and business function.
8. a WAP (wireless access point), be applied to comprise in the system of wireless access point AP and the work station of the described AP of access, work station arranges the listening intervals Listen Interval of self according to the data transmission of information DTIM to be passed interval of carrying in the Beacon message of AP, it is characterized in that, this WAP (wireless access point) comprises:
Memory cell, for the corresponding relation at storage service function and DTIM interval;
Acquiring unit, for obtaining the business function of the work station accessing with described AP;
Determining unit, is connected with acquiring unit with described memory cell, for searching described corresponding relation according to the business function of the work station obtaining, according to the minimum DTIM interval finding, determines DTIM interval;
Wherein, the corresponding relation at described business function and DTIM interval, is specially: the DTIM interval that business function that requirement of real-time is higher is corresponding is less, and the DTIM interval that business function that requirement of real-time is lower is corresponding is larger.
9. WAP (wireless access point) as claimed in claim 8, is characterized in that, described acquiring unit is specifically for obtaining the business function of work station in each DTIM interval; Described determining unit specifically for: according to the business function of the work station obtaining, search minimum DTIM interval, when the minimum DTIM interval finding is less than current DTIM interval, while finishing at current DTIM interval, adjust the minimum DTIM interval that DTIM finds described in being spaced apart.
10. WAP (wireless access point) as claimed in claim 9, it is characterized in that, the minimum DTIM interval that described determining unit is also all greater than in the DTIM interval at due in place of current DTIM interval and this Preset Time for: the minimum DTIM interval finding in Preset Time is greater than current DTIM interval, tunes up DTIM interval while finishing at the DTIM interval at this due in place.
11. WAP (wireless access point) as claimed in claim 10, is characterized in that, described determining unit also for: while finishing at the DTIM interval at this due in place, DTIM interval is adjusted into the minimum DTIM interval finding in Preset Time; Or DTIM interval is adjusted into the DTIM interval of low one-level according to default DTIM grade.
12. WAP (wireless access point) as claimed in claim 9, it is characterized in that, described determining unit also for: if the minimum DTIM interval finding in the DTIM interval of default number is continuously greater than current DTIM interval, while finishing at the DTIM interval of described default number, DTIM interval is adjusted into the minimum DTIM interval finding in the DTIM interval of continuously default number.
13. WAP (wireless access point) as claimed in claim 8, is characterized in that, described acquiring unit is also for the business function that obtains work station in Preset Time;
Described determining unit also for: according to the business function of the work station obtaining, search described corresponding relation, obtain minimum DTIM interval in Preset Time, while finishing at current DTIM interval, adjust DTIM and be spaced apart described minimum DTIM interval.
14. WAP (wireless access point) as claimed in claim 8, is characterized in that, described acquiring unit specifically for: detect the traffic priority field of service message, according to the corresponding relation of service priority and business function, obtain the business function of work station.
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| CN107087283B (en) * | 2017-06-09 | 2020-02-14 | 维沃移动通信有限公司 | Method and terminal for monitoring beacon frame |
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