CN101035332A - Adjustment of parameters based upon battery status - Google Patents

Adjustment of parameters based upon battery status Download PDF

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Publication number
CN101035332A
CN101035332A CNA2006101719953A CN200610171995A CN101035332A CN 101035332 A CN101035332 A CN 101035332A CN A2006101719953 A CNA2006101719953 A CN A2006101719953A CN 200610171995 A CN200610171995 A CN 200610171995A CN 101035332 A CN101035332 A CN 101035332A
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mobile device
data
access point
listening intervals
battery condition
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CNA2006101719953A
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CN101035332B (en
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吴长根
李镇硕
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LG Electronics Inc
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LG Electronics Inc
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00Packet switching elements
    • H04L49/90Buffering arrangements
    • H04L49/9005Buffering arrangements using dynamic buffer space allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0261Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

In a wireless local area network, a battery status of a mobile device is determined, battery status data based upon the battery status is generated, and a listen interval between a mobile device and an access point is adjusted based upon the battery status. Listen interval data is generated based upon the listen interval, an association request frame is wirelessly transmitted from the mobile device to the access point during the listen interval. The association request frame includes the battery status data and/or the listen interval data.

Description

Parameter regulation based on battery condition
Technical field
The disclosure relates to radio communication, and a kind of specific implementation relates to the size of regulating access point place buffer memory in radio local network environment based on the battery condition of the mobile device of working.
Background technology
Wireless lan (wlan) is for the network environment of WLAN service is provided such as mobile devices such as PDA(Personal Digital Assistant), the laptop computer of being with the WLAN card and smart phones.Mobile device is connected in WLAN by the access point as the trunking of communication usefulness in wlan system.
Compare wired lan, wlan system has some advantages.Because their wireless nature, WLAN allows networking gear to have bigger mobility, and easier deployment, dilatation and configuration.Yet the transmission speed of WLAN is lower than wired lan, and owing to the essence of radio communication is easy to generate the signal interference.In addition, in order to keep physically movably state in WLAN, the wireless device that is connected in WLAN may need to rely on its battery to carry out work.
Summary of the invention
According to a general aspect, determine the battery condition of mobile device, generate battery condition data based on battery condition, and based on the listening intervals between this battery condition adjusting mobile device and the access point.In addition, generate the listening intervals data based on listening intervals, and during listening intervals association request frame is sent to access point with wireless mode from mobile device, wherein association request frame comprises battery condition data and listening intervals data.Receive association request frame at the access point place, and be the buffer memory at mobile device distribution access point place, wherein cache size is based on battery condition data and/or listening intervals data.From access point association response frame is sent to mobile device with wireless mode.
Each implementation can comprise one or more in the following feature.For example, access point can send to plan the storage of this mobile device and go into the buffer memory that is distributed, and the data that will be stored in the buffer memory that is distributed send to mobile device with wireless mode.In addition, battery condition can be indicated remaining battery power.And for example, when remaining battery power be higher than the largest battery electric weight 70% the time, listening intervals is represented by time T, when the 40%-70% of remaining battery power at the largest battery electric weight, 2T represents by the time, and when remaining battery power be lower than the largest battery electric weight 40% the time, 5T represents by the time.For another example, when remaining battery power be higher than the largest battery electric weight 70% the time, cache size is represented by big or small S, when the 40%-70% of remaining battery power at the largest battery electric weight, represent by big or small 2S, and when remaining battery power be lower than the largest battery electric weight 40% the time, represent by big or small 3S.Association request frame also can comprise capacity data, service groups sign (" SSID ") data and/or supporting rate data.Association response frame also can comprise capacity data, situation code data, association identification (" AID "), the indication of supporting rate data and/or access point place cache size.Can generate the battery condition data of binary number form.In addition, can regulate listening intervals based on battery condition and predetermined battery condition threshold.
According to another general realization, a kind of equipment comprises battery and controller, this controller is configured to: the battery condition of determining battery, generate the battery condition data based on battery condition, based on the listening intervals between battery condition adjusting mobile device and the access point, and based on listening intervals generation listening intervals data.This equipment also comprises transceiver, this transceiver is configured to: the association request frame that will comprise battery condition data and/or listening intervals data with wireless mode during listening intervals is sent to access point from mobile device, and receives the association response frame that also comprises based on the data of the size of battery condition data and/or listening intervals data from access point with wireless mode.
According to another general realization, a kind of equipment comprises transceiver, and this transceiver is configured to receive battery condition data that comprise indication mobile device battery condition and/or the association request frame of indicating the listening intervals data of listening intervals with wireless mode from mobile device.This transceiver also is configured to will also to comprise the association response frame that is stored in the data in the buffer memory with wireless mode and is sent to mobile device from access point.In addition, access point apparatus comprises controller, and this control is configured to the size based on battery condition data and/or listening intervals data allocations access point place buffer memory.This access point also comprises the storage medium that is configured to data are deposited in buffer memory.
According to another general realization, a kind of system comprises mobile device and access point apparatus.Mobile device and then comprise battery, controller and transceiver.Controller is configured to: the battery condition of determining battery is regulated listening intervals based on battery condition, and is generated the listening intervals data based on listening intervals to generate the battery condition data based on battery condition.This transceiver is configured to: send the association request frame comprise battery condition data and/or listening intervals data with wireless mode during listening intervals, and receive the association response frame that also comprises based on the data of the size of battery condition data and/or listening intervals data with wireless mode.Access point apparatus and then comprise transceiver, controller and storage medium.This transceiver is configured to receive association request frame with wireless mode from mobile device, and will also comprise the association response frame that is stored in the data in the buffer memory with wireless mode and send to mobile device.This controller is configured to distribute the buffer memory at access point place, and wherein the size of buffer memory is based on battery condition data and/or listening intervals data.This storage medium is configured to storage in buffer memory.
According to another general realization, a kind of system comprises access point apparatus, and this access point apparatus comprises: be configured to the storage medium of storage in buffer memory; And the transceiver that is configured to send to mobile device with the association response frame of indication that wireless mode will also comprise the cache size at access point apparatus place.In addition, this system comprises mobile device, this mobile device and then comprise the transceiver that is configured to receive association response frame.This system also comprises controller, and this controller is configured to indication based on cache size and distributes listening intervals between managing electric quantity situation and/or mobile device and the access point apparatus.
According to another general realization, determine the mobile device battery condition of indication dump energy.Generation is based on the battery condition data of battery condition, and regulates listening intervals between mobile device and the access point based on battery condition.In addition, generate the listening intervals data, and the association request frame that will comprise battery condition data and listening intervals data with wireless mode during listening intervals is sent to access point from mobile device based on listening intervals.
Each realization can comprise one or more in the following feature.For example, the listening intervals of regulating between mobile device and the access point based on battery condition also comprises: prolong the duration of listening intervals when remaining battery power reduces, and shorten the duration of listening intervals when remaining battery power increases.
The details of one or more realizations will accompanying drawing and below explanation in illustrate.Further feature will become clear by specification and accompanying drawing and claims.
Description of drawings
Fig. 1 illustrates an exemplary configuration of network communicating system.
Fig. 2 is illustrated in the radio communication between interior access point of WLAN environment and the mobile device.
Fig. 3 is the block diagram that the exemplary configuration of access point and mobile device is shown.
Fig. 4 illustrates a kind of example format of association request frame.
Fig. 5 illustrates a kind of example format of association response frame.
Fig. 6 A and Fig. 6 B illustrate the example of the cache size of regulating the access point place.
Fig. 7 is the table that the exemplary values of listening intervals, cache size and battery condition is shown.
Fig. 8 and Fig. 9 illustrate the flow chart that access point place cache size is regulated.
Figure 10 illustrates the flow chart that mobile device place listening intervals is regulated.
Figure 11 illustrates the flow chart of communicating by letter between mobile device and the access point.
Figure 12 is the flow chart that method for communicating between mobile device and the access point is shown;
In all figure, identical label is represented corresponding part.
Embodiment
Fig. 1 illustrates an exemplary configuration of network communicating system 100.Network communicating system 100 comprises the wireless local network segment 110 and wired segment 120.WLAN section 110 can be configured to the equipment that is connected in WLAN 110 radio communication is provided.Wired segment 120 can interconnect one or more Local Area Network and/or wide area network (WAN).WLAN section 110 and wired segment 120 can interconnect with the access point 130 and 135 of trunking effect by play network service such as hub, bridge, switch or router etc.
Equipment with wireless networking capabilities can be connected in WLAN section 110.This kind equipment can including, but not limited to: have wireless capability PDA 111, wireless laptop devices 112, comprise the desktop system 113 of the computer equipment 113a that is furnished with the peripheral parts interconnected card of WLAN (PCI) 113b or comprise the system on knee 114 of the laptop devices 114a that is furnished with WLAN pci card 114b.Wireless device 111-114 is connected in the WLAN section 110 by the network trunk equipment that has wireless capability such as access point 130 and 135 etc.
Fig. 2 illustrates an example of the radio communication between WLAN environment 200 interior all access points and the mobile device.Briefly, wireless device 210a-210c communicates with one another by access point 220a, and wireless device 210d and 210e communicate with one another by access point 220b.Access point 220a and access point 220b are connected to each other by the network segment 230, and this network segment can be wireless segment or line segment is arranged.Connection between access point 220a and the access point 220b allow equipment 210a-210e with and with other network in devices communicating.Mobile device 210a-210e is furnished with radio frequency (RF) card to enable any communication equipment of radio communication in WLAN environment 200.For example, mobile device 210a-210e can comprise laptop computer or desktop computer, personal communication service terminal, PDA, smart phone, cell phone and/or WLAN terminal.As a supplement or replace, mobile device can comprise the network interface unit (NIC) of enabling according to the communication of IEEE  802.3 (Ethernet) and/or IEEE  802.11 (WLAN) standard.
Mobile device 210a-210e is connected in access point 220a-220b being called in the predetermined space of listening intervals, to receive and/or to send data.In order to be connected in access point 220a-220b, mobile device 210a-210e need be related with access point 220a-220b with itself.
Below such association process is described.Association process can take place to the connection of access point 220a with during reconnecting at mobile device 210a.Mobile device 210a sends to access point 220a-220b with association request frame.Association request frame can comprise the required various control datas that are associated with access point 220a with mobile device 210a.Access point 220 is handled association request frame and is replied mobile device 210a with association response frame.Association response frame also can comprise the various control datas that mobile device 210a is associated with access point 220a.In case association response frame has obtained processing at mobile device 210a, just between mobile device 210a and access point 220a, set up association.In addition, when having set up when related, access point 220a can be mobile device 210a and distributes association identification (" AID ").When mobile device 210a was not connected with access point 220a, AID can help access point 210a to be temporarily stored into buffer memory to the data that mobile device 210 sends.When mobile device 210a when reconnecting during next listening intervals in access point 220a, access point 210a uses AID to be retrieved as mobile device 210a and is temporary in the data in the buffer memory and these data are sent to mobile device 210a.As a result, access point 220a-220b can be each mobile device 210a-210e and safeguards independent buffer memory.These buffer memorys can be associated with the AID of mobile device 210a-210e.
The physics mobility is a key character of WLAN environment 200.As a result, in order to keep physically removable, responsible their battery rather than the supply socket of mobile device 210a-210e works on.Yet, in WLAN environment 200, send or receive the data consumes battery electric quantity.Specifically, during listening intervals,, will consume some battery electric quantities whenever mobile device 210a-210e is connected to access point 220a.As a result, the radio operation in WLAN environment 200 can shorten mobile device 210a-210e and has enough battery electric quantities and need not operating time of changing battery or charging again from supply socket to work on.
Fig. 3 is the block diagram that the exemplary configuration of the system 300 that comprises access point 330 and mobile device 310 is shown.Mobile device 310 comprises transceiver 311, storage medium 312, controller 313 and battery 314.Storage medium 312 or be used for waiting the operation of each parts for example in controller 313 controlling mobile equipment 310 from the transceiver 313 that access point 330 received or transmitted data.For example, in the association process in conjunction with Fig. 2 explanation, controller 313 can make transceiver 311 that association request frame is sent to access point 330.Association request frame can comprise can be configured to battery condition data and/or the listening intervals data that length is 16 field.Storage medium 312 can be stored the data that will be sent to access point 330 or receive from access point 330.In addition, storage medium 312 can be used to store any mobile device 310 that makes can operate required software code, comprises making controller 313 operable codes.At last, battery 314 is mobile device 310 and the power supply of each parts thereof.In addition, mobile device 330 can comprise other functional block useful to its operation, for example display, keyboard or data processing unit.
Mobile device 310 is expected to save its battery electric quantity by the length that is adjusted in the listening intervals in the WLAN environment.In an example, when being connected in access point 330, mobile device 310 is determined its battery condition based on for example dump energy, generate the battery condition data based on battery condition, based on the listening intervals between battery condition adjusting mobile device and the access point, and based on listening intervals generation listening intervals data.
Can during at every turn to the access attempts of access point 330, regulate listening intervals based on the battery condition of mobile device 310.In general, when mobile device 310 was attempted access point 330 inserted, the battery of mobile device 310 will consume.Therefore, a kind of method of mobile device 310 its battery power consumption of minimizing is to reduce the number of times that the access of access point 330 is attempted.The prolongation listening intervals duration realized when this can reduce by the battery electric quantity at mobile device 310.When listening intervals duration overtime, can will increase by the data volume that mobile device 310 receives or sends.As a result, identical if the data volume that mobile device 310 received/sends keeps, then along with the listening intervals duration prolongs, the actual frequency of required access attempts reduces.Therefore, prolonging the listening intervals duration is need save the battery electric quantity of mobile device 310 to the number of times that access point 330 inserts by reducing mobile device 310.
Access point 330 comprises storage medium 332, controller 333 and transceiver 331.Storage medium 332 comprises buffered destributer 332a, and it is configured to analyze the association request frame that receives from mobile device 310 and retrieval battery condition data and/or listening intervals data from received association request frame.Wait the operation of each parts in the controller 333 control access points 330 such as storage medium 332 and transceiver 331.For example, the generation of controller 333 may command association response frame, association response frame is the response to the association request frame that receives from mobile device 310.Controller 333 is gone back may command transceiver 331 association response frame is sent to mobile device 310.In addition, access point 330 can comprise such as other functional blocks useful to its operation such as data processing units.
As discussing in conjunction with Fig. 2,330 pairs of access points are successfully set up each related mobile device 310 and are distributed AID.The access point 330 temporary section data that itself send to mobile device 310 by other network equipment or access point 330 in the AID reference cache.As mentioned above such, the duration of regulating the listening intervals of mobile device 310 will change the data volume that mobile device 310 can receive or send in this interim.Therefore, when mobile device 310 was regulated listening intervals based on its battery condition, access point 330 also should regulate and distribute the size to the buffer memory of mobile device 310, so that cache size reflects the data volume that mobile device 310 receives or sends during listening intervals.
For example, if the listening intervals of mobile device 310 is elongated, then the number of times that inserts to receive or to send data of 310 pairs of access points 310 of mobile device tails off.As a result, access point 330 should increase to and be received from/be sent to the cache size that the data of mobile device 310 are distributed, can in longer listening intervals, receive or send more multidata thus.
In an object lesson, the listening intervals of mobile device 310 can be configured to 100 milliseconds and can determine battery condition (for example being expressed as the dump energy of the percentage of maximum electric weight) periodically.Maximum electric weight refers to be full of the electric weight of electric battery, and it may be less than the electric weight by the original regulation of battery manufacturers.If battery condition is the 40%-70% of largest battery electric weight, then listening intervals can be changed into 200 milliseconds.On the other hand, if battery condition, then can be extended for listening intervals 500 milliseconds at below 40% of largest battery electric weight to save battery electric quantity.
As previously mentioned, when prolonging the listening intervals of mobile device 310 based on battery condition, access point 330 may need to cushion more will be transferred into or from the data of mobile device 310.Therefore, when mobile device 310 was regulated the duration of its listening intervals, mobile device 310 should be notified access point 330.Specifically, the controller 313 of mobile device 310 comprises battery condition data and/or listening intervals data in association request frame, and when mobile device 310 connected or reconnects in access point 330, association request frame was sent to access point 330.Association request frame is sent to access point 330 by the transceiver 311 of mobile device 310 with wireless mode.The controller 333 of access point 330 is checked battery condition data and/or the listening intervals data that are included in the association request frame that is received, and allows buffered destributer 332a to distribute buffer memory based on the battery condition and/or the listening intervals of mobile device 310.Distributor 332 can be mobile device 310 and distributes new buffer memory.
Perhaps, if before distributed buffer memory for mobile device 310, then distributor 332 can use the buffer memory of previous distribution, rather than is that mobile device 310 distributes new buffer memory.Distributor 332 is gone back the size of the buffer memory of previous buffer memory that distributes of scalable or up-to-date distribution, and their content of removing/change.In case distributor has been regulated the cache size that is used for mobile device 310, access point 330 just sends to mobile device 310 with wireless mode with association response frame by transceiver 331.Association response frame can be included in the size that access point 330 places are the buffer memory of mobile device 310 distribution.
Fig. 4 is illustrated in the example format that connects or be sent to the association request frame of access point when reconnecting by wireless device.Association request frame 400 comprises ability information 401, listening intervals 402, service groups sign (SSID) 403, supporting rate 404 and battery condition data 405.Battery condition data 405 comprise the various data of describing battery condition.
In an example, the battery condition data can comprise battery condition 406, and its representative is by the battery electric quantity surplus of the percentage expression of largest battery electric weight.Battery condition 406 can be expressed as binary number in the position information data 407 in the battery condition data 405.For example, when the current battery electric quantity of battery condition 406 indication be higher than the largest battery electric weight 70% the time (406a), battery condition 406 is by binary number " 000 " expression (407a).And for example, when the current battery electric quantity of battery condition 406 indication is in the 40%-70% scope of largest battery electric weight (406b), battery condition is by binary number " 001 " expression (407b).For another example, when the current battery electric quantity of battery condition 406 indication be lower than the largest battery electric weight 40% the time (406c), battery condition is by binary number " 010 " expression (407c).Battery condition 406 also can be represented by the particular percentile of expressing with any benchmark numerical value 406d, for example 37%, 12% or 68.9%.
In another embodiment, the battery condition data can comprise the managing electric quantity situation of mobile device.The managing electric quantity operation that the indication of managing electric quantity situation is carried out by mobile device.For example, the managing electric quantity situation comprises sleep pattern situation, park mode situation, wake up situation, " LCD pass " situation or " hard disk drive pass " situation entirely.
Fig. 5 illustrates the response association request frame is sent to the association response frame of wireless device by access point a kind of example format.This association response frame 500 comprises ability information 501, situation code 502, AID 503, supporting rate 504 and cache size 505.The size of the buffer memory of mobile device is distributed in cache size 505 indications by access point after the processing of association request frame.For example, later consult Fig. 3, cache size 505 can indicate buffered destributer 332a and be sent to the size that battery condition data the association request of access point 330 and/or listening intervals data allocations are given the buffer memory of mobile device 310 based on being included in from mobile device 310.
Fig. 6 A and Fig. 6 B illustrate the example of the adjusting of access point place cache size.Specifically, the capable 601A-604A of the table 600A among Fig. 6 A illustrates battery condition with the original allocation for the used cache size of the mobile device 1-4 that is connected in access point.At first, going battery that 601A-604A illustrates indication mobile device 1-4 is in the battery condition of its maximum electric weight (for example being full of).Here, table 600A illustrates with the percentage of largest battery electric weight and/or the battery condition of binary number representation.In three preset ranges of this binary number and pilot cell situation one is corresponding---when remaining battery power be higher than the largest battery electric weight 70% the time be " 000 ", when remaining battery power the largest battery electric weight 40% and 70% between the time be " 001 ", and when remaining battery power be lower than the largest battery electric weight 40% the time for " 010 ".In any case, access point is initially each mobile device and distributes 10 Mbytes.In addition, access point is kept preparation storage pool 605A, and access point can be given mobile device 1-4 from this pond allocation external memory where necessary.
Turn to Fig. 6 B now, table 600B illustrate when the battery condition of mobile device 1-4 and/or listening intervals when Fig. 6 A changes, how access point regulates cache size.For example, indicated as battery condition new among the row 601B-604B, when the battery condition of mobile device 1 was changed into 56% or " 001 " (for example dropping on 40%-70% by interior) of maximum electric weight, the cache size that access point will be used for this mobile device was adjusted to 20 Mbytes (602B).And for example, when the battery condition of mobile device 3 becomes 32% or " 010 " of maximum electric weight (for example drop on be lower than 40% by interior), access point is regulated cache size to 30 Mbytes (603B) that is used for this equipment.Because mobile device 1 and 4 battery condition still are higher than 70% end, and distribute so access point changes the buffer memory that is used for these equipment as yet.Shown in Fig. 6 B, access point is got as the extra storage of distributing to the buffer memory of equipment 2,3 from preparation storage 605A, after the buffer memory that is used for equipment 2 and 3 being distributed these 30 extra Mbytes by access point, this preparation storage 605A is reduced to 10 Mbytes (605B) from 40 Mbytes.
Fig. 7 is the table 700 that the exemplary values of listening intervals, cache size and battery condition is shown.When battery condition pilot cell dump energy is reducing, just prolong the duration of listening intervals.In addition, cache size increases along with the prolongation of listening intervals.Can regulate the size of buffer memory by access point based on listening intervals data or battery condition data.Also can regulate listening intervals based on battery condition or by the cache size that access point is distributed to mobile device by mobile device.
Fig. 8 is the flow chart that the cache size adjusting at access point 330 places is shown, and in conjunction with Fig. 3 this is discussed.Access point 330 receives association request frame from mobile device 310, and wherein association request frame comprises battery condition data and/or listening intervals data (S801).In an example, the battery condition data can comprise battery condition, and its representative is by the surplus of the battery electric quantity of the percentage expression of the largest battery electric weight of mobile device 310.As a supplement or replace, battery condition can be able to be expressed as binary number as the position information data.The listening intervals data comprise the duration of listening intervals.
Whether greater than a predetermined value (for example greater than 70%) (S802) access point 330 checks battery condition.Access point 330 can check that also whether listening intervals is less than another predetermined value (for example less than 200 milliseconds).If battery condition is not more than a predetermined value or listening intervals is not less than another predetermined value, then access point 330 scalable are used for the cache size (S803) of mobile device 310.Cache size can be regulated (increase or reduce) scheduled volume, as in conjunction with Fig. 6 and example shown in Figure 7 discussion.Access point 330 also uses the amount that algorithms of different is calculated increases cache size.
If less than second scheduled volume, then access point 330 does not change the cache size (S804) that is used for mobile device 310 to battery condition greater than first predetermined value and listening intervals.Access point 330 sends to mobile device with association response frame.Association response frame was discussed in conjunction with Fig. 5, and it can comprise the current size of being distributed to the buffer memory of mobile device 310 by access point 330.
Fig. 9 is illustrated in the flow chart of access point 330 places based on another example of the cache size adjusting of battery condition, in conjunction with Fig. 3 this is discussed.For example, access point 330 receives the association request frame (S901) that comprises the battery condition data from mobile device 310.As previously mentioned, the battery condition data can comprise the battery condition of the battery electric quantity surplus of representing mobile device 310 places, and this is by the percentage expression of largest battery electric weight.
Access point 330 checks that whether battery condition is greater than 70% of largest battery electric weight.If battery condition is greater than 70% of the largest battery electric weight, access point 330 uncomfortable cache size (S903) of saving then in mobile device 310.On the other hand, if battery condition less than 70%, then access point 330 check battery conditions whether the largest battery electric weight 40% and 70% between (S904).If battery condition be in the largest battery electric weight 40% and 70% between, then access point 330 increases one-level (S905) with cache size, one-level is to be selected as realizing at access point 330 places the pre-sizing that optimal storage is distributed.In conjunction with Fig. 6 and Fig. 7 some exemplary predetermined cache sizes are discussed.For example, access point 330 can increase the cache size that is used for mobile device 310 10 Mbytes.If the battery condition of mobile device 310 is less than 40% of the largest battery electric weight, then access point 330 increases two-stage (S906) with cache size.For example, access point 330 can increase the cache size that is used for mobile device 310 20 Mbytes.Access point 330 sends to mobile device 310 (S907) with association response frame.Association response frame is discussed in conjunction with Fig. 5, and it can comprise the current size of being distributed to the buffer memory of mobile device 310 by access point 330.
Figure 10 is the flow chart of adjusting that the listening intervals at mobile device place is shown.Mobile device is checked current battery condition (S1001).When the battery condition that is checked through during greater than predetermined value (S1002), the storage size of being distributed constant (S1006).
When the battery condition that is checked through during less than predetermined value, the controller of mobile device is regulated listening intervals (S1003) according to the battery condition data.Then, association request frame is sent to access point (S1004).Association request frame can comprise battery condition data and listening intervals data, as discuss in conjunction with Fig. 4 the front.Access point is regulated the size (S1005) of buffer memory based on the listening intervals data that receive.Access point sends to mobile device (S1007) with associated response.
Figure 11 is the flow chart that is illustrated in another exemplary adjustments of mobile device place listening intervals.Its cache size (S1101) is distributed in the mobile device reception by access point.Mobile device compares (S1102) with this cache size and predetermined value.If the cache size of being distributed is greater than predetermined value, then mobile device prolongs its listening intervals, so that it can receive more multidata (S1103) to the access point transmission or from access point.On the other hand, if cache size less than predetermined value, then mobile device reduces the duration of its listening intervals, because it does not have the data of as much will receive (S1104) from access point during short listening intervals.Perhaps, if do not think that the listening intervals duration needs to change, it is constant that then mobile device can keep the duration of its listening intervals.
Figure 12 is the flow chart that the communication means between mobile device and the access point is shown.Mobile device is determined the battery condition (S1201) of mobile device.Mobile device generates battery condition data (S1202) based on battery condition subsequently.Battery condition can be indicated remaining battery power.The battery condition data also can be generated as binary number.
Mobile device is based on the listening intervals (S1202) between battery condition adjusting mobile device and the access point.Can regulate listening intervals based on battery condition and predetermined battery condition threshold.And for example, listening intervals can be the function of remaining battery power.For example, when remaining battery power be higher than the largest battery electric weight 70% the time listening intervals represent by time T, listening intervals is represented by time 2T when the 40%-70% of remaining battery power at the largest battery electric weight, and when remaining battery power be lower than the largest battery electric weight 40% the time listening intervals represent by time 5T.
The size of buffer memory also can be the function of remaining battery power.For example, when remaining battery power be higher than the largest battery electric weight 70% the time cache size represent by big or small S, cache size is represented by big or small 2S when the 40%-70% of remaining battery power at the largest battery electric weight, and when remaining battery power be lower than the largest battery electric weight 40% the time cache size represent by big or small 3S.
Mobile device generates listening intervals data (S1203) based on listening intervals.At last, mobile device is sent to access point (S1204) with the association request frame that wireless mode will comprise battery condition data and listening intervals data from mobile device in listening intervals.Association request frame also can comprise ability information, service groups sign (" SSID ") data and/or supporting rate data.
At the access point place, access point receives association request frame (S1205).Access point is the buffer memory that mobile device distributes the access point place, and wherein the size of buffer memory is based on battery condition data and/or listening intervals data (S1206).At last, access point is sent to mobile device (S1207) with association response frame from access point with wireless mode.Association response frame also can comprise ability information, situation code data, association identification (" AID "), the indication of supporting rate data and/or access point place cache size.In addition, access point can with the storage of planning to be dealt into this mobile device in the buffer memory that is distributed and with wireless mode will be stored in distributed the data in the buffer memory to be sent to this mobile device.
Be to be understood that the spirit and scope that to make various modifications and can not break away from claims.For example, if if the step in the public technology is carried out with different order and/or open system in parts make up by different way and/or replaced by other parts or replenish, still can obtain useful effect.
Be combined with a specific exemplary embodiment all configurations have been described.Yet be to be understood that these theories and implementation are not limited to the foregoing description and can make various changes and modification.

Claims (18)

1. method comprises:
Determine the battery condition of mobile device;
Generate the battery condition data based on described battery condition;
Regulate listening intervals between described mobile device and the access point based on described battery condition;
Generate the listening intervals data based on described listening intervals;
With wireless mode association request frame is sent to described access point from described mobile device during described listening intervals, described association request frame comprises described battery condition data and/or described listening intervals data;
The place receives described association request frame at described access point;
For mobile device distributes the buffer memory at described access point place, the size of wherein said buffer memory is based on described battery condition data and/or described listening intervals data;
With wireless mode association response frame is sent to described mobile device from described access point.
2. the method for claim 1 is characterized in that, described battery condition indication remaining battery power.
3. method as claimed in claim 2, it is characterized in that, when described remaining battery power be higher than the largest battery electric weight 70% the time, described listening intervals is expressed by time T, when the 40%-70% of described remaining battery power at the largest battery electric weight, described listening intervals is expressed by time 2T, and when described remaining battery power be lower than the largest battery electric weight 40% the time, described listening intervals is expressed by time 5T.
4. method as claimed in claim 2, it is characterized in that, when described remaining battery power be higher than the largest battery electric weight 70% the time, the size of described buffer memory is expressed as big or small S, when the 40%-70% of described remaining battery power at the largest battery electric weight, the size of described buffer memory is expressed as big or small 2S, and when described remaining battery power be lower than the largest battery electric weight 40% the time, the size of described buffer memory is expressed as big or small 3S.
5. the method for claim 1 is characterized in that, described association request frame also comprises capacity data, service groups sign (" SSID ") data and/or supporting rate data.
6. the method for claim 1 is characterized in that, described battery condition data are generated as binary number.
7. the method for claim 1 is characterized in that, described association response frame also comprises capacity data, situation code data, association identification (" AID "), the indication of supporting rate data and/or access point place cache size.
8. the method for claim 1 is characterized in that, regulates described listening intervals and is based on described battery condition and predetermined battery condition threshold value.
9. the method for claim 1 is characterized in that, also comprises:
Send to the storage of described mobile device in the buffer memory that is distributed with planning; And
The data that will be stored in the buffer memory that is distributed with wireless mode are sent to described mobile device.
10. method comprises:
With wireless mode association response frame is sent to mobile device from access point, described association response frame comprises the indication of described access point place cache size;
The place receives described association response frame at described mobile device;
At described mobile device place, distribute listening intervals between managing electric quantity situation and/or described mobile device and the described access point based on the indication of the cache size at described access point place.
11. method as claimed in claim 10 is characterized in that, described managing electric quantity situation is sleep pattern situation, park mode situation, wake up situation, " LCD pass " situation or " hard disk drive pass " situation entirely.
12. an equipment comprises:
Battery;
Controller, described controller is configured to: the battery condition of determining described battery, generate the battery condition data based on described battery condition, regulate listening intervals between described mobile device and the access point, and generate the listening intervals data based on described listening intervals based on described battery condition; And
Transceiver, described transceiver is configured to: with wireless mode association request frame is sent to described access point from described mobile device during described listening intervals, described association request frame comprises described battery condition data and/or described listening intervals data; And receiving association response frame from described access point with wireless mode, described association response frame also comprises the size of data based on described battery condition data and/or described listening intervals data.
13. an equipment comprises:
Transceiver, described transceiver is configured to: receive association request frame with wireless mode from mobile device, described association request frame comprises the battery condition data of the battery condition of indicating described mobile device and/or the listening intervals data of indication listening intervals; And association response frame being sent to described mobile device from described access point with wireless mode, described association response frame also comprises the data that are stored in the buffer memory;
Controller, described controller is configured to distribute the buffer memory at access point place, and the size of described buffer memory is based on described battery condition data and/or described listening intervals data; And
Storage medium, described storage medium are configured to deposit described data in described buffer memory.
14. a system comprises:
Mobile device, described mobile device also comprises:
Battery;
Controller, described controller is configured to: determine the battery condition of described battery, generate the battery condition data based on described battery condition, regulate listening intervals based on described battery condition, and generate the listening intervals data based on described listening intervals; And
Transceiver, described transceiver is configured to: send association request frame with wireless mode during described listening intervals, described association request frame comprises described battery condition data and/or described listening intervals data; And with wireless mode reception association response frame, described association response frame also comprises data, and the size of described data is based on described battery condition data and/or described listening intervals data; And
Access point apparatus, described access point apparatus also comprises:
Transceiver, described transceiver is configured to: receive described association request frame with wireless mode from mobile device, and with wireless mode described association response frame is sent to described mobile device, described association response frame also comprises the data that are stored in the buffer memory;
Controller, described controller is configured to distribute the buffer memory at described access point place, and the size of described buffer memory is based on described battery condition data and/or described listening intervals data; And
Storage medium, described storage medium are configured to described data are deposited in the described buffer memory.
15. a system comprises:
Access point apparatus, described access point apparatus also comprises:
Be configured to the storage medium of storage in buffer memory; And
Be configured to wireless mode association response frame be sent to the transceiver of mobile device, described association response frame also comprises the indication of the cache size at described access point apparatus place; And
Mobile device, described mobile device also comprises:
Transceiver, described transceiver is configured to receive described association response frame; And
Controller, described controller are configured to indication based on described cache size and distribute listening intervals between managing electric quantity situation and/or described mobile device and the described access point apparatus.
16. a method of regulating listening intervals at the mobile device place, described method comprises:
Determine the battery condition of described mobile device, wherein said battery condition indication dump energy;
Generate the battery condition data based on described battery condition;
Regulate listening intervals between described mobile device and the access point based on described battery condition; And
Generate the listening intervals data based on described listening intervals; And
With wireless mode association request frame is sent to described access point from described mobile device in listening intervals, described association request frame comprises described battery condition data and/or described listening intervals data.
17. method as claimed in claim 16 is characterized in that, the described listening intervals of regulating between mobile device and the access point based on battery condition also comprises: when described remaining battery power reduces, prolong the duration of described listening intervals.
18. method as claimed in claim 16 is characterized in that, the described listening intervals of regulating between mobile device and the access point based on battery condition also comprises: when described remaining battery power increases, shorten the duration of described listening intervals.
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