CN101584229B - Efficient addressing and power saving method and system in wireless system - Google Patents

Abstract

A kind of method that platform group is addressed in wireless communication system, it starts by some groups of the platform in dispatching system.Group identifier is transferred into each platform, and the group identifier is shown in frame for each group for having data in the frame.The addressing method can be employed to save the platform power, if the group identifier in its for the platform is not appeared in the frame, the platform ingoing power save mode.

Description

Efficient addressing and power saving method and system in wireless system

Technical field

The present invention relates to wireless communication system.More particularly, passed the present invention relates to reinforced dedicated channel (E-DCH) control Transmission method and device.

Background technology

Frame is integrated and frame burst is the two proposal mechanisms of enhancing WLAN (WLAN) system effectiveness.The mechanism is examined Consider 802.11n to be extended for that 802.11 WLAN standards compared with high production Wireless LAN device can be facilitated.TGnSync And WWISE proposes to consider that all kinds of frames are integrated and frame bursting scheme.

Fig. 1 shows that the different type frame that TGnSync, WwiSE or both propose is integrated and frame bursting scheme.Integrated scheme is big The packet part that can be integrated according to it is caused to distinguish.

M AC (MAC) service data unit (MSDU) integrates (100) and can integrate one or more media access controls To form integration medium access control service data cell (A-MSDU) 104, each medium accesses control to service data unit processed 102 Service data unit processed is separated by sub-frame header 106.M AC header 108 is added into integration M AC Service data unit is forming single medium access control protocol data cell (MPDU) 110.

Medium access control protocol data unit aggregation (120) can integrate one or more medium access control protocol data sheets Unit 122 integrates medium access control protocol data cell (A-MPDU) 124, each medium access control protocol data to form a list Unit is separated by medium access control protocol data cell delimiter 126.Comprising an intrinsic training and signal (SIGNAL) word The HT training of section 130 and one and entity (PHY) header 128 of signal field 132, are added into integration medium access control protocol number According to unit 124 forming an en-tity protocol data unit (PPDU) 134.

En-tity protocol data unit integrates (140) and can integrate one or more en-tity protocol data units 142, each en-tity protocol Data cell includes an entity header 144 and a medium access control protocol data cell 146.Comprising an intrinsic training and signal The HT of a field 150 and training and the entity header 148 of signal field 152, are added to form a single integral entity protocol data Unit (A-PPDU) 154.

The en-tity protocol data unit bursts (160) for being also known as high yield (HTP) burst transfer are related to by single high yield Amount platform (STA) accesses the transmission sequence of frame 162 with single medium.Each frame 162 includes an entity header 164, with an intrinsic training And the HT of a signal field 166 and training and signal field 168, and a medium access control protocol data cell 170.Frame 162 can Thin consolidation en-tity protocol data unit is transmitted as, or tool lowers frame border interval (RIFS) 172 and carrys out amplified medium efficiency.

Integration or bursting scheme can be supported to be scheduled and be sent to single collector (namely single WLAN destination) Integration frame, the scheduled integration frame for being sent to multiple collector (namely many WLAN destinations), or both.SRA Address single collector is used to integrate, and MRA is used to address multiple collector and integrates.For example, because medium access control service Data unit aggregation scheme only includes a media access control address of recognizable list WLAN receiver address, so It is normally used for single collector integration.On the other hand, because integrate or burst in each medium access control protocol data sheet A media access control address of the unit comprising recognizable different wireless local area network network receiver address, so M AC is assisted The bursting scheme of view data unit aggregation, the integration of en-tity protocol data unit and en-tity protocol data unit, can be used for singly connecing Device is received to integrate or multiple collector integration.

Frame is integrated and bursting scheme has the benefit for increasing WLAN system efficiency and Gross Output.Shortcoming is most of Frame is integrated and bursting scheme do not support saving power/battery/it is friendly.Subject matter is phase during integrating frame and burst duration Work as length.If so being contained in integration frame about the data (namely what WLAN destination-address) of any station platform and dashing forward Knowledge in hair is not provided in advance, then each platform in WLAN must be received and decoded and all integrate frame or burst To check whether frame or burst are included by with some data for being sent to platform surely.

The action for receiving and decoding the tediously long grouping information consumes the big energy of receiver of the platform, if the reception platform With some signs, it should not be monitored (receive and decode) and if the specific integration frame of unexpected receiver or knowing in advance for burst Know, then can substantially save power/battery.

There is the related knowledge in advance of the data integrated in frame or burst by providing any station platform, it is all without integrate frame or The platform of the data in burst (namely can be not listening to or not decode all divide by being sunk into sleep during integrating frame or burst duration Group) save power.On the other hand, if some more prior information are provided, with the data integrated in frame or burst Platform can save power.The prior information is the data transfer time point about integrating the platform in frame or burst.Basic conception is The platform waken up using prior timing information during the integration frame comprising its data or burst part (monitor and decode) and It is sunk into sleep during the remaining part not comprising its data, thereby reduces its power consumption.

In prior art, with the proposal that some support power/batteries are saved.As shown in Fig. 2 TgnSync motions is whole Medium access control protocol data unit aggregation scheme 200 is closed to propose to integrate descriptor (MRAD) as pre- using multiple collector Surely the first medium access control protocol data cell for being sent to the integration frame in of multiple collector (integrates medium access control protocol Data cell).En-tity protocol data unit 202 integrates medium access control protocol data sheet comprising an entity header 204 and Unit 206.Entity header 204 includes an intrinsic training and the HT of a signal field 208 and training and signal field 210.Integrate medium Access control protocol data cell 206 comprising a multiple collector integrate descriptor medium access control protocol data cell 212 and The multiple medium access control protocol data cells 214 for respectively being separated by medium access control protocol data cell delimiter 216.

Multiple collector integrates descriptor medium access control protocol data cell 212 and is used in the following manner.Without whole Closing the platform of the data in frame or burst will receive and decode until multiple collector integrates descriptor medium access control protocol number Untill terminating according to unit 212, and platform can learn its receiver address and be not included in multiple collector integration descriptor, its Untill (namely deenergize its receiver) can be sunk into sleep until integrating frame end.Because TgnSync requirements are scheduled be sent to it is identical The medium access control protocol data cell of receiver address must be positioned over integration medium access control protocol by that neighbour each other In data cell, so the platform with the data for integrating frame in will be received and decoding data is until its all its medium of reception connects Untill entering the different receiver addresses in control protocol data cell and the next medium access control protocol data cell of detecting, its Untill (namely deenergize its receiver) can be sunk into sleep on the aspect until integrating frame end.

Even if the offer of multiple collector integration descriptor mechanism is reached based on integration medium access control protocol data cell Multiple collector integrate the method that power is saved in example, but multiple collector integrates descriptor mechanism and is applied to single-rate multiple collector Integrate, and be not enough to (wherein integrate medium access control protocol data cell by with not suitable for the integration of multi tate multiple collector Same rate is transmitted), integrated for en-tity protocol data unit, it is not suitable for en-tity protocol data unit bursts.

One motion explanation multi tate (or many MCS) multiple collector integrates (MMRA), and it is integrated about multi tate multiple collector Support that power is saved when being used.The motion is comprising using with platform identifier (namely receiver address) information and time point The multi tate multiple collector of offset information integrates descriptor (MMRAD), and it can be used for power saving.Multi tate multiple collector is whole Descriptor is closed to be defined in the M AC part of frame, and the single-bit in the entity part of frame is (bright to be positioned at HT- In SIG fields) it is used to indicate the appearance that multi tate multiple collector integrates descriptor.

Many shortcomings are born in prior art motion, and such as multiple collector integrates descriptor or multi tate multiple collector integrates description Symbol length very big and inefficiency, it is variable length, and can be only simplified by using fixed length packets.Also because this is big Field, power saves information and cannot be embedded into and should be maintained in the physical layer of small size.Because power is saved information and is connect in medium Enter and transmitted in controlled level, so it integrates descriptor because of multiple collector being passed with the speed of the simultaneously equal decodable code of not all platform Send without very strong.It is also M AC medium access control protocol data cell, if if so it is lost or stands Platform can not be correctly decoded it, then can not save power.Further drawback is that timing information is not provided with efficient manner.Current motion Most applications integrate medium access control protocol data unit aggregation, and cannot be integrated with integral entity protocol Data Unit, En-tity protocol data unit bursts, multi tate multiple collector is integrated or reverse traffic efficient and strongly is operated.

The content of the invention

This method can be applied to frame integrated scheme, and frame bursting scheme, and the frame not being integrated (is namely such as transferred into list Receiver person).Saved the invention is not restricted to power and battery, also can be used for other purposes, such as carried via simplified group addresing For addressing metrizability, it is designed or implemented for being grouped scheduler, or for various radio resource manager functionalities.

In a kind of wireless communication system platform group addresing method be using the platform in dispatching system as some groups as Start.Group identifier is transferred into each platform, and the group identifier is directed to each group for having data in the frame and is marked It is shown in frame.

It is a kind of promote the method that wireless communication system power is saved using the platform in dispatching system be some groups as opening Begin.Group identifier is transferred into each platform, and the group identifier is directed to each group for having data in the frame and is labeled In frame.If the group identifier of platform is not appeared in frame, platform ingoing power save mode thereby saves power.

A kind of method for promoting wireless communication system power to save is to indicate traffic direction, traffic direction sign in frame Frame destination is used as beginning.If traffic direction thereby saves power not against platform, platform ingoing power save mode.

A kind of method for promoting wireless communication system power to save is received and decoding frame with platform, until platform decoding Conduct starts untill power saves marking device.If the power saves marking device, sign platform can be used power saving mode, stand Platform ingoing power save mode.

A kind of method for promoting wireless communication system power to save is the time point to transmit the platform in timing information to frame Information takes a part of frame as beginning.Platform ingoing power save mode based on the timing information.The platform is with this Power saving mode is left based on timing information, and is received after power saving mode is left and is decoded a part of frame.

A kind of method for promoting wireless communication system power to save is indicated to frame to provide monitoring, and the monitoring indicates to include How many frames are using the sign decoded by the platform of the expected receiver of the non-frame as starting.The monitoring indicates to be contained in frame, It is transferred into platform.Frame is received at platform, and is monitored instruction and be decoded.Frame is decoded based on monitoring instruction At platform, wherein the platform is in the rear entrance power saving mode for decoding the part frame that monitoring instruction is indicated, the station Platform thereby saves power.

It is a kind of to promote the method that wireless communication system power is saved to transmit the first frame to access point with from platform, comprising coming from The platform exits the requirement of transport-type as beginning.At least one second frame is transmitted from the access point.Second frame is received in At platform, the transport-type of its decodable code second frame.If the transmission class that the transport-type of second frame is the platform to be had dropped out Type, then the platform ingoing power save mode.

Brief description of the drawings

Understanding in more detail of the invention can be obtained from preferred embodiments below and brief description of the drawings, wherein：

Fig. 1 is integrated and bursting scheme diagram for some frames of both having deposited；

Fig. 2 is both to deposit medium access control protocol data unit aggregation scheme icon using multiple collector integration descriptor；

Fig. 3 is to be grouped platform and illustrated with the group of access point communication；

Fig. 4 is to use the group identifier information example being connected during being sunk into sleep with timing information and platform；

Fig. 5 A are both to have deposited intrinsic PLCP (PLCP) header diagram in TgnSync entity headers；

Fig. 5 B are the intrinsic PLCP header diagram comprising frame type designation device；

Fig. 6 A are that the HT-SIG fields of both depositing both deposited in TgnSync entity headers are illustrated；

Fig. 6 B are comprising HT-SIG_XThe HT-SIG fields diagram of field；

Fig. 7 A be WWiSE entity headers in both deposit signal-MM and signal-N field icons；And

Fig. 7 B are the signal-MM comprising extra information field and signal-N field icons.

Specific embodiment

Hereafter, " platform " (STA) noun is including but not limited to user's equipment, wireless transmission/receive unit, fixed or row Dynamic subscriber unit, calling set, or it is operable in any other type component in wireless environment.Hereafter it is referred to as " access point (AP) " person is including but not limited to B node, base station, any other interfacing device in address control unit, or wireless environment.

The present invention can be applied to various different technologies, and comprising integrating frame, nonconformity frame connects inversion scheme, such as multiple response more The multiple response device scheme that device integrates (MRMRA) is received, reverse traffic, more wheel inquire about multiple response multiple collector and integrate many polls (MMP). Therefore, the defined power of the present invention saves scope can cover individually, not be integrated, or the frame that single collector is integrated, all quilts Integrate frame or outburst type, and all schemes with multiple response device or many polls of use.

Platform group addresing

The method that the present invention provides efficient addressing platform group.Because the finite size header such as physical layer header needs many Bit group, so the addressing current technical scheme of WLAN platform is not effective for them.Substantially, current wireless office Area network system and method can not efficient addressing physical layer or the platforms even at medium access control layer.

The present invention propose can group addresing platform, and can be used for the new efficiency of the WLAN header of finite size Scheme.This group addresing can be used by various efficiency enhancing function, and such as power is saved, RRM, improves service quality , and packet scheduling (packet scheduler design and implement) (QoS).When platform number is sufficiently small, it can also be used to unique identification Last business purpose ground (as received WLAN platform).In WLAN, efficient addressing can be by making access point The platform (these platforms for such as being associated from access point) that tissue is being serviced is different groups, and each group can reach comprising many platforms Into." power saves group ", " platform group ", or " address group " term can be used to call the group.

Although WLAN platform is generally uniquely identified by its media access control address, the strong enhancing of effect and Power is saved by being also not required to the bright whole media access control address or certain media access control address for determining platform and reached Into.Additionally, " group address ", " group identifier ", " group's marking device " or " group number " can be used to promote power to save.Such as Fig. 3, it is assumed that it is four groups that access point 300 may organize six platforms (302-312) for servicing.One possibility is to access Point 300 assigns platform #1 (302) and #6 (312) to group 1, platform #2 (304) to group 2, platform #4 (308) and #5 (310 to Group 3, and platform #3 (306) is to group 4.Also can be put into a platform in many groups by access point 300.In Fig. 3, platform #5 And both #6 (312) is deployed on group 1 and group 3 (310).

Once access point 300 determines to assign platform to one or more groups, then it can be used any message pattern to send This is assigned group or group signals to the platform.For example, working as platform #6 (312) once being associated with access point 300 and access point It is determined that when assignment or classification platform #6 are 1 part of group, access point can be used management frame, action action frame, control frame or data frame To indicate platform #6, it has been assigned to group 1.The signaling can be directed in a variety of ways, such as by introducing newer field in association Or again in disassociation frame；Both deposit management or action action frame (such as be used to intercept and confirm that (ACK) sets up, Business Stream is set up, or direct link Agreement (DLP) creator)；As confirmed, intercept and confirm to require (BAR) and intercept to confirm (BA), starter integral traffic control (IAC)/ Responsor integral traffic control (RAC), Modulation and Coding Scheme (MCS) request and Modulation and Coding Scheme feedback；And data frame.

Some classes confirm that (feedback) can be used, and thereby platform can confirm that it has been properly received its new group and has assigned.Group Assign and its then confirm that (via feedback or confirmation) can both deposit WLAN frame in or by defining new frame quilt in any Transmission message.Access point can rely on oneself itself will classify as special Group Partial, without Group Partial, can include any of other platforms Group Partial, or per Group Partial.Access point also can be by its platform that group passes to association of assigning.

Access point can belong to default group (such as the fixed value) (group for such as being recognized by all 0 and 1 that all platforms are noticed Group；In Fig. 3, access point belongs to group 0.Not yet may be assumed that it is predetermined to be by the platform that access point is assigned into group to be possible to Group Partial (such as platform belongs to every group untill it is assigned particular demographic).Meanwhile, set up or directly in direct link Connect in the specific context network of link protocol (DLS or DLP), access point it is transmittable when directly talking with another platform its should make Group identifier (namely whichever should be other platforms be assigned into group) or substituting made for the purpose Default group is to platform.

Group assigns, then assigns or signaling can be directed at access point or platform is considered as at necessary any time point, and not It is limited to the moment such as agreement or association.Static assignment can also be used, and thereby operator or user can configure or organize The platform or access point are necessary group, and by the information input platform or access point.Meanwhile, being assigned algorithm can be designed For assigning, thereby platform be can be used without or clearly communication/signaling is relied on oneself and itself will be assigned into a group a little.

Various dimensions group can be defined, and it can be interpreted as having the secondary group in group.For example, platform can be assigned to Group 1 and subgroup 2.Subgroup concept have for belonging to many platforms of same group between differentiation.If for example, group 1 includes Three platforms, and there are four available subgroups in group 1, then three platform can respectively be placed into different subgroups, thereby provide group Further discriminated between the platform in group.Therefore, more general example is to assign one or more values to platform, and each value represents a group, A subgroup in one group, and the sub- subgroup in a subgroup.More general example is that, with NWei Du groups, it can be by N Repeated order unit (g1, g2 ..., gN) is identified, and platform will be assigned N values, and one is worth for each N-dimensional degree (namely group's combination).

Group also can be by considering that other characteristics are defined.For example, whether the recognizable broadcasting service of a group is contained in Frame in and effective all platforms comprising in access point coverage area.If access point thinks transmission comprising broadcasting service and belongs to group The integration frame of 2 business, then its group 0 can be used to indicate with the scheduled broadcasting service for being sent to all platforms, and can Indicated using group 2 with the business for an at least platform in group 2.This concept is particularly useful in integrating the data of frame in When being sorted by type of service；For example, broadcasting service and/or multiple spot the business transferring quilt before frame in single-point business transferring is integrated Place.It is the scheduled broadcasting service for being sent to all platforms that broadcast group can be used to represent data type.

Similar concept can be applied to multiple spot business transferring, the one or more groups with sign multiple spot business transferring.One Group it is signable broadcast and multiple spot business transferring be simultaneously or it is any come across frame in (namely simple group group present broadcast or multiple spot Transmission).Frame type information can be used for defining the group.For example, a group can be used for the management of frame, action or control class Type.In addition, when service quality relevant information can be used for defining group.

It is many possible algorithm of available groups with can be used for tissue platform and/or different service types.One algorithm Use memory list index bit subgroup (such as Stochastic accessing memory table), the entrance of the media access control address comprising the platform It is placed.Because access point may maintain the look-up table of the media access control address of its related platform, access point The media access control address of usable wherein platform is stored in the minimum influence of the list index in Stochastic accessing memory table Bit.Second algorithm application hash function in platform media access control address (and if expected platform and business other are special Property).Third algorithm is to load (namely business is used) to each group (or its platform) monitoring (measurement), and between all groups The mode of approximate even load is produced dynamically to change group assignment.4th algorithms selection minimum (is used) using group with business To be assigned to newest related platform.Other algorithms comprising the load attempted between segmentation/all groups of balance/use, and consider it Its factor, such as encapsulation/packet are integrated with similar frame and required, using similar data rate or power level, or with similar clothes These platforms in business quality or the same group of RRM requirement.

Transmission group assignment information

As described above, manage, action, control or data frame can be used for transmission and be assigned group signals to platform, Ling Yizhan The group of platform or the group of access point.For example, starter integral traffic control/responsor integral traffic control, RTS/CTS, modulating-coding side Case is asked and fed back, and is intercepted and is confirmed to require/intercept to confirm, association/association request and response frame, or CF polls or service quality again Poll can be used for the signaling purpose.The signaling can include group's assignment message, and it is group's assignment message that it includes signable this A flag, and the newest value (being encoded as bitmap or other patterns) for being assigned group.Assignment message can also be included and is assigned The information of group range, for example this be assigned group and whether can be applied to this platform, access point or another platform (such as direct link During agreement).

Once platform is properly received group's assignment message, it can confirm it via the group's confirmation message for returning to access point It is correctly received and newest is assigned group.Alternative to be, platform can periodically confirm group in unsolicited mode, and it can be directed to respectively not With communication range transmission, group confirms or confirmation message.

Assign platform to different groups again

If being unsatisfactory for the group being assigned at present, platform can also require that group assigns again.For example, platform measures its electricity Water put down, and if its power outage (namely when specific door is intersected), it can connect via the very low news of power supply Access point, and it may require group and assigns again.Platform can be clearly comprising its battery levels in the requirement.When receiving message, During access point can be determined to deny or receive the requirement of platform and can assign the platform to new group.Because management, action, control or Data frame is indicated to access point design or organizes its group useful, so platform can be set up or any signaling phase phase in agreement Between via the sign to access point, whether it has and using power save group information and save the ability of power.

Power saves group information

It is proposed for realizing that power is saved, simplified or mensurable addressing, scheduling frame (scheduler implementation), any wireless money Power management function, or any other efficiency increases powerful information and is generically referred to as " power saving group information ".The information Use be not limited to power saving, and also can be used for other purposes, such as data scheduler is implemented；With class paraconformity requirement ( These frames together may be exactly integrated), data rate is similar to, it is similar to power, or the similar service quality in same group It is required that to be grouped platform；And various radio resource management functions.Some or all frames that WLAN can be used can be included Frame header (entity or M AC header), frame main body, or it is any previously by transmission frame (such as RTS/CTS, starter integration Control/responsor integral traffic control, CF polls or service quality poll).Power save group information can comprising it is one or more with Bottom sheet segment information.

Occur or validity flag (PVF)

It is at least a piece of to indicate power saving group information that field (or bit) is taken as flag (being referred to herein as flag) Whether section is come across in frame (such as in frame header).For example, appearance or validity flag can be used to whether sign frame in has work( Rate saves information.It is assumed per frame and is saved in the example of information comprising power, the flag may be unnecessary.Flag can be used for implementing Variable-length entity or M AC header field or header.

For example, whether the signable header extension of flag occurs, wherein the header extends comprising all or some power Saving information.Bit can be used in entity header signal field (such as HT-SIG fields or signal-N fields) indicating one (or It is more) additional orthogonal frequency division multitask symbol is provided in HT-SIG fields, and the additional orthogonal frequency division multitask symbol is included The field that all or some power save information can be provided.In another variation, flag can be used to sign and be contained in signal letters In general (pressure) the orthogonal frequency multitask symbol of section, the power without extra orthogonal frequency multitask symbol saves information Field availability or validity.Occur or the signable power of another use of validity flag (such as by using another bit) is saved Whether group information is effective.

There is (or occurring without) marking device (GPI) in group

Frame includes recognizable frame and is scheduled the platform group being sent to.(or occurring without) marking device occurs in group can be using extremely Individual frames, integrate frame, burst transfer or frame sequence.For example, there is (or occurring without) marking device information in Ming Ding or coding group One pattern is reached by using bitmap (or curtain cover).Previously described four groups of examples are returned to, (or occurring without) sign occurs in group Device field can be defined as comprising four bits (b1, b2, b3, b4), and thereby whether 2 value sign frame is comprising being assigned to group 2 An at least platform data.In order to illustrate, when access point transfers data to the single platform as the part of group 2, access point The platform that can be used bitmap 0100 to belong to group 2 to indicate has and comes across by some of transmission frame data, and the frame has no Comprising the data for belonging to other three group.

Alternative to be, group can be defined to be indicated this frame and included to be scheduled to be sent to using rule encoding (such as 10) and belong to group The data of the platform of group 2.

Another example, when access point (uses service data unit aggregation, medium access control protocol number using frame is integrated as worked as Integrated according to unit, en-tity protocol data unit integrates burst, and multi tate multiple collector is integrated, or many polls) transfer data to station During platform, the data of an at least platform of 0110 bitmap values an at least platform and group 3 of the sign frame comprising group 2, and the frame is not Data comprising group 1 or group 4.Even if it should be noted that this official holiday sets four groups, but any group number can be used and bitmap It is expanded the group number for accommodating and being used.Furthermore, the group number for being used can be rendered as dynamic variable.Group's appearance (or not Occurring) marking device may be included with frame header, entity header, M AC header, entity header, M AC mark Head, multiple collector integrates descriptor, and many polls of multiple response multiple collector integration, or the signal field of any many poll frames is (intrinsic Signal, HT-SIG, or signal-N) in.

Group's timing information (GTI)

Multiple collector is integrated in example, there is provided group's timing information can be saved compared with Gao Gong to these platforms for being integrated in frame in Rate.Because group's timing information still (or occurring without) marking device can occur by using group reaches power saving, non-whole The platform for closing frame part is not required to them.

In order to illustrate how group's timing information is used, it is considered to which bitmap values 0110 are used to sign integration frame and include group The data of at least platform in an at least platform and group 3 in 2.Assuming that the data of given group that adjacent to integrating frame in, Then can recognize that group 2 data start by the delivery time or nearby, and also recognize group 2 data start by the delivery time Or neighbouring timing information can be provided that.

Group's timing information can make group allow data to be sunk into sleep (do not receive namely or decode) until the data of the group Untill the time point that one fragment is transmitted, thus reach power saving therebetween.Because receiving platform can be sunk into sleep, once it is received Receiver address modification in its data and detecting integration frame in next fragment data, power is saved can be achieved.

In order to provide group's timing information, the frame in each group time started (such as time migration pattern) is provided.This information is Belong to any platform in group the fragment of data first start the time point transmitted or near.In order to efficiency provides group's time point Information, except completely bright fixed (coding) each group's time started (or shift time), all group basis duration are (namely Base period) can be used, and recognize the time started different fractional values of (such as time migration) and can be used for each group.For example, it is assumed that The basic duration is 16 time quantums, then it is fraction 3/4 that group's time started can be encoded and be communicated by using dibit, Its mean group's time started (such as group time skew) be it is any come self-reference time point (3/4 × 16=) 12 time quantum.

Basic Duration Information can be from WLAN frame header field of both depositing be exported.For example：Entity mark Speed (RATE) and length (LENGTH) field in head intrinsic signal field；In the HT-SIG (signal) of TgnSync frame headers HTLENGTH and Modulation and Coding Scheme field；Or length and Config in signal-N (signal) field of WWiSE frame headers Field can be used to derive basic Duration Information.Basis be persistently same as from physical layer information be exported when deceiving lasting Between (SD).Deceiving the duration (or any variation that can be exported from it) using this can provide coding as the basic duration And the efficiency method of time point (as offset) information.Alternative to be, the duration/identifier field of M AC header can It is used to derive the basic Duration Information.

It is shown in Fig. 4 using the timing information example based on deceiving duration and group's timing information.Group When the signable platform of timing information should begin listening for medium, and in Fig. 4, be encoded group's timing information and be given 1/4 deceiving Duration spacing.Table 1 illustrates the group's timing information coding used in Fig. 4.Although it should be noted that table 1 is held with deceiving Continuous time mode illustrates group's timing information, but any types frame duration can be used to encode group's timing information.

The group's timing information coding example of table 1.

Group's timing information value	When platform begins listening for
		00	When deceiving the duration and starting
01	Deceive at the duration 1/4
		10	Deceive at the duration 1/2
11	When deceiving duration 3/4

Newer field can be added into the entity or M AC header of WLAN frame, and it is bright fixed to be clearly used as The basic duration.The basic duration can correspond to full duration or the section duration of frame of frame.En-tity protocol data Unit bursts or en-tity protocol data unit are integrated in example, except the definition basic duration is single en-tity protocol data unit (or frame) duration, the basic duration can also be defined as en-tity protocol data unit bursts and (namely cover multiframe The basic duration) or integral entity protocol data unit frame.Similarly, multi tate multiple collector is integrated, and reverse traffic is taken turns more Ask, or in multi tate multiple collector integrated scheme, the basic duration can cover the frame sequence full duration for being exchanged.

In addition to the basic duration, each group's fractional value must be specified.Fractional value is multiplied by the basic duration To obtain group's actual transmission time started (such as group's delivery time offsets).Assuming that fixed reference denominator, then only denominator value must Must be specified and communicate.For example, it is assumed that four denominators, then dibit can be used to group's timing information.

Again as a example by indicating 0110 group of the appearance of group 2 and 3 and (or occurring without) marking device occur, group's time point is encoded Information one may mode be that every group has dibit, so group's timing information comprising eight bits (b1, b2, b3, b4, b5, B6, b7, b8), thereby bit b1 and b2 values can provide the numerator value of group 1 (because (or occurring without) marking device mark occurs in group Show that group 1 occurs without, so it may not be needed in this example), and b3 and b4 provides numerator value of group 2 etc..For example, being Obtain group 2 to transmit beginning or neighbouring time migration information, the basic duration, must be multiplied by ' b3b4 ' by we It is worth and divided by four.(namely when the group of platform comes across frame in), time when the frame is comprising the data for being used for the platform Offset information is substantially interpreted that platform will be monitored at frame or the neighbouring time.

Group's timing information may be included with frame header；Entity header；M AC header；Or entity header, it is situated between Matter Access Control header, multiple collector integrates descriptor, and multiple response multiple collector integrates the letter of many polls or any many poll frames In number field (intrinsic signal, HT-SIG, or signal-N).Group's timing information need not be contained in be same as group occur (or Occur without) position of marking device.For example, (or occurring without) marking device occurs in group may be included with entity header, and group Timing information may be included with M AC header, and (such as multiple collector integrates descriptor or the integration of multiple response multiple collector is more In poll).

Group occurs and timing information (GPTI)

Even if (or occurring without) marking device information occur in group's timing information and group is defined as two independent fields, it is also Can be merged together and by using predetermined image encode occur and timing information come define a field (group occur and time point believe Breath) in two category informations.As shown in Fig. 4 and table 2, with the various methods for encoding two panels segment information together.

The group of table 2. occurs and timing information coding example

Group occurs and the time point value of information	When platform begins listening for
		00	When deceiving the duration and starting
01	Deceive at the duration 1/4
		10	Deceive at the duration 1/2
11	At the end of deceiving the duration

There is value 01,10 and 11, platform can be sunk into sleep untill monitoring Medium Time, thereby save power.Because platform Will be in being begun listening at the end of deceiving the duration and being sunk into sleep during all transmission of frame, so the 11 signable group of particular example Occur without.Group occurs and timing information may be included with frame header, in entity header or M AC header.Group goes out Existing and timing information may be included with entity header, M AC header, and multiple collector integrates descriptor, is connect multiple response more Device is received to integrate in the signal field (intrinsic signal, HT-SIG, or signal-N) of many polls or any many poll frames.

Access point color (APC), cell color, or access point coverage area color

In with the multi-access point system using same frequency channel, give in cell (namely access point coverage area) Platform can monitor betide it is another nearby or adjacent cell in frame transmission.In order to preferably power saves effect in capturing the example Can, WLAN frame can recognize that it is referred to alternatively as " access point color " or " groups of access points " or " cell comprising access point Color " or " cell identification ".Access point color differs and is set to access point unique identification.If for example, access point 1, access point 2 and connecing Access point 3 is closer to each other and uses same frequency channel, then access point color is recognized by using dibit, and access point 1 can quilt Assign 11 colors, access point 2 can be assigned 01 color, and access point 3 can be assigned 00 color.Access point color may be included with frame Header, entity header, M AC header, entity header, M AC header, multiple collector integrates descriptor, Multiple response multiple collector is integrated in the signal field (intrinsic signal, HT-SIG, or signal-N) of many polls or any many poll frames.

The platform serviced by access point 1 can be by not decoding comprising further in the frame of diverse access point color in frame header Information come save power (platform for such as being associated with access point 1 pass through be not listening to or decode as its access point color, include 00,01 or 10 frame saves power).Access point color can further save power at multi-access point system level, but Even if without it, also can be used the above method to save power.

MonitorDirection indicates (LDI)

Monitor direction or indicate to illustrate that whichever must be read, decode or explain.In some examples, non-frame is expected receiver The WLAN platform of (namely its data is not contained in frame in) still has to read and decoding frame is specific to capture Information.For example, platform need to update its part is stored NAV duration values, and it needs the M AC of at least decoding frame Duration/identification information in header.Alternative to be, (such as length and speed, modulate and compile the responsible entity header information of platform Code scheme or Config fields) update its NAV duration value.

Even if receiving the expected receiver of platform not frame, frame conveyer still can be used (such as bit or a bit of field in header Perhaps bit) bright fixed reading and decode whether all or some M AC header informations need to receive platform.Conveyer also may be used Receive whether platform should be contained in intrinsic entity header (such as intrinsic signal field), high production surely using another field is bright (namely 802.11n) entity header, or (such as duration of the M AC header/identification of M AC header Field) in information based on be stored NAV duration values updating its part.

Some recessive criterions can be used to derive the duration/identification field of M AC header (or substantially Whole M AC header) whether need to be read.One criterion may compare and be continued using deceiving for intrinsic physical signalling field Time and deceive the duration using high production entity HT-SIG (or signal-N) field.If having particular differences between the two Measure, then the difference can be interpreted that further reading and solution are released into the instruction of M AC header.

Meanwhile, the field (a such as bit) in entity header can be used as clearly monitoring direction or indicate indicating platform is It is no to be sunk into sleep immediately, or should not be sunk into sleep and keep monitoring until it decodes first medium Access Control header that (or medium accesses control The some fragments of information processed) and be then sunk into sleep.It is relevant monitor deep this more than frame be explicitly indicated can be further enlarged provide where/ When (such as event/field or when) ceases listening for immediately：After ASAP, such as decoding M AC header, decoding the After one medium access control protocol data cell, after decoding multiple collector integration descriptor etc..

Traffic direction

Also power can be saved by knowing traffic direction.If for example, given platform transmits business to access point, frame mark Signable data are scheduled in head is sent to access point.Because platform can be sunk into sleep during other platforms are sent to access point, institute Power can be saved with them using this information by watching this " traffic direction " (TD) field or bit attentively.M AC mark In head, and more clearly in the frame control field of M AC header, with can be used to identify traffic direction " extremely DS " and " coming from DS " field.The information also can be used for saving power.In addition, new business direction can be for identification traffic direction Specific purpose is placed in the entity header of frame.The signal field that traffic direction field can be placed on entity header is (intrinsic Signal, HT-SIG, or signal-N).This simple scheme advantage for its be not required to specific new signal send set up group (group wrap Containing access point as receiver, and other groups include all platforms as receiver).

Exit integration and bursting scheme

Platform can transmit its preference not for platform can be made to consume the signal of the specified scheme part of too many power to access point, Such as specific integration or bursting scheme, the power of platform is thereby saved.For example, platform can be used not want to make to be scheduled to be sent to its Data turn into the frame (management, action, control or data frame) for integrating frame part.If access point agrees to that this requires and confirms to agree to back To platform, then the platform can save power when frame is detected using specified scheme by being sunk into sleep.For example, when detecting frame is integrated (by using signal field, such as information in HT-SIG fields), platform can be sunk into sleep during frame is integrated.

Platform can be used not to be wanted to make scheduled its data that are sent to be integrated as particular type, such as multiple collector integration portion The frame for dividing.In the example, platform can be sunk into sleep during the frame integrated comprising multiple collector.Similarly, platform can require that it does not want to make It is scheduled to be sent to its medium access control protocol data cell or en-tity protocol data cell data integrated part, but its is same Mean service data unit aggregation part.Field (such as in signal field) in frame header can be used to indicate the integration that frame is included Scheme accurate type.Detected once platform it is not assumed that when monitoring frame, because data of the frame not comprising platform, platform can be in frame Duration is sunk into sleep.Platform can agreement its whether support or preference is integrated frame and received (to multi-destination or single destination).Platform Table row can be characterized by through management, action, control or data frame transmission information, agreement is carried out in menu bar, or preference table row part. Platform can before association, association after immediately, association after certain after a while time or any other time transmit this frame.

Message also can be produced dynamically, such as by making its battery levels of station monitor and being arranged across specific door and transmission Except from the requirement of the scheme (such as specific integration scheme) of more power hungry to access point.Platform remaining work(also in signable message Rate amount, and its preference is excluded from or alternative is incorporated into.

Frame type indicators

The use of the unused reservation bit in intrinsic physical signalling field (L-SIG) can also be taken as identification extrinsic frame to pass Defeated flag, such as 802.11n frames.Because platform can be sunk into sleep during the frame of these extrinsics (such as 802.11n frames transmission) is transmitted, So this field can be used for saving the power that intrinsic device is newly implemented (newly send).

It is sunk into sleep timer

In order to prevent from platform from being maintained because of error situation being sunk into sleep one section of fast knot situation in period long, when platform enters mould of being sunk into sleep During formula, timer mechanism is implemented at platform.If platform was sunk into sleep more than scheduled time interval (configurable parameter), because it is In fast knot situation, so it will wake up when timer ends and start to once again listen for medium.

Power saves group information position

Any power saves group information (PSGI) fragment and may be included with any types WLAN frame and appoint What part WLAN frame in.Power saves group information and may be included with entity header (such as signal field), medium Access Control header, frame main body or tail.Power saves during group information some fragments may be included with frame ad-hoc location (such as In entity header), and power saves group information some other fragments and can be placed (such as M AC header of somewhere in frame It is interior).

For the frame as the integration of en-tity protocol data unit or en-tity protocol data unit bursts part, power saves group Group information can be by comprising integration frame or burst centre, such as in the physical signalling (header) of intermediate frame, M AC signal (header), midamble, or delimiter.Meanwhile, integrated for such as multiple response multiple collector, reverse traffic, wheel inquires about polyphony more Multiple collector is answered to integrate many polls, some power save group information fragment and may be included with WLAN frame and many receptions Device is integrated in descriptor or many polls of multiple response multiple collector integration.The some power that are suggested of addition save group information in the party Its efficiency (for example being encoded via timing information efficiency) and potential its efficiency of improvement can be increased in case.

Fig. 5 A are that the intrinsic PLCP header 500 both deposited in TgnSync entity headers is illustrated.Physical layer is converged Agreement header includes a speed field 502, a reserved field 504, a length field 506, together bit field 508, an and afterbody Field 510.Because PLCP header 500 is positioned in frame previously, it is that power saves group information word The efficiency position (being shown with saving reception platform power meter) of one of section.

Fig. 5 B are that the intrinsic PLCP header 550 comprising frame type designation device field 552 is illustrated.Field 502 And 506-510 is identical with header 550.When picture format designator is that a bit and PLCP header compare with a reservation When special, the PLCP header is an appropriate location.

Fig. 6 A are that the HT-SIG fields 600 of both depositing both deposited in TgnSync entity headers are illustrated.HT-SIG fields 600 are included One HT-SIG1 parts 602 and a HT-SIG2 parts 604.HT-SIG1 parts 602 include a length field 610, a reserved field 612 and a M AC field 614.HT-SIG2 parts 604 include an advanced encoder field 620, one first reserved field 622, a sound grouping field 624, a numeral HY-LTF fields 626, a short GI fields 628, one second reserved field 630, one The frequency range field 634 of scrambler initialization field 632,1, a Cyclic Redundancy Check field 636 and a wave tail 638.

Fig. 6 B are comprising HT-SIG_XThe HT-SIG fields 650 of part 652 are illustrated；HT-SIG1 parts 602 and HT-SIG2 portions 604 are divided to be same as HT-SIG fields 600.HT-SIG_XPart 652 includes a picture format indicator field 654, a traffic direction field 656, one occurs or validity flag 658, a group occur (or occurring without) marking device/group's timing information/group occur and Timing information field 662, an access point color field 664, and a Cyclic Redundancy Check 666.Although it should be noted that HT-SIG_XPortion There are all power to save group information field, HT-SIG to divide 652 to be shown_XPart 652 can be saved with any number power Group information field is constructed without influenceing efficiency of the present invention.Additionally, as a example by shown power saves group information field order only Card, and skilled artisan can again arrange order of the field without influence present invention operation.

It is alternative to be, the first reserved word in reserved field 612 and HT-SIG2 parts 604 in HT-SIG1 parts 602 The reserved field 630 of section 622 and second can be used for power and save group information.Power save group information field can be unfolded and It is positioned over its script position in reserved field, or reserved field can be rearranged and save group information field that is adjacent forming power Space.

Fig. 7 A are both depositing signal-MM fields 702 and both deposited the icon of signal-N fields 704 in WWiSE entities header 700. Signal-MM fields 702 include a speed field 710, a reserved field 712, a length field 714, together bit field 716, and One trailer field 718.Signal-N fields 704 include one first reserved field 720, a configuration field 722, a length field 724, One LPI fields 726, one second reserved field 728, a Cyclic Redundancy Check field 730, a trailer field 732 and a service words Section 734.

Fig. 7 B are comprising the signal-MM fields 752 in WWiSE entities header 750 and the icon of signal-N fields 754.Power Saving group information field can be placed on both had deposited reserved field 712,720 and 728.As shown in Figure 7 B, picture format indicator field 756 can be placed in signal-MM fields 752, and some other power save group information field and can be placed on signal-N At the position 758 and 760 of field 754.It should be noted that field 758 and 760 can be rearranged in signal-N fields 754 to be formed Between power saves group information field that adjacent air space.

Checking power saves group information

Power is saved group information integrality (correctness) and can be calculated via inspection and (such as Cyclic Redundancy Check) or with position Protected.Cyclic Redundancy Check can be the latest definition field in frame header, or can be in entity or M AC header Both deposit inspection and/or Cyclic Redundancy Check field (such as HT-SIG or signal-N fields).Cyclic Redundancy Check can individually from all Or Partial Power is saved group information and is exported, or some other information quilts of group information quilt can be saved from frame header and power Derive.

Even if most of explanations and example say integration frame, but all explanations and example also can equally using dashing forward to frame Hair or frame sequence, such as entity protocol Data Unit burst, multiple response multiple collector are integrated, poll, many polls, or many poll polyphonies Answer multiple collector integrated scheme.

The present invention described herein can be applied to any WLAN system train of thought, and such as BSS, ESS, IBSS are to wireless LAN, mesh network and end-to-end (ad-hoc) network of WLAN.The network and substantially by expositor and worked as If it is the node that access point is not appeared as in the network to make the small difference in case, any platform can provide and be attributed to connect The feature of access point.Many WLAN platforms can also be not required to access point and come the implementation of cooperation together function of the present invention and side Method.

The present invention does not limit WLAN system based on only WLAN system or network, or only 802.11 System.The present invention can be used and is applied in any wireless communication system, such as other WLAN technologies or standard, and its Its cellular communication system, comprising umts (UMTS), WCDMA (WCDMA), CDMA 2000 is high The lower chain packet of speed accesses (HSDPA), and the packet of high speed cochain accesses (HSUPA), or third generation Partnership Program (3GPP) LTE.This hair It is bright also to apply and be used in wide area wireless network, in such as 802.16.

Embodiment

1. a kind of method for being addressed to the STA groups in WLAN, it comprises the following steps：

AP, STA or any entity are by STA (or address of STA) tissue in WLAN coverage areas/be categorized as some groups Group, one of group can include multiple STA, and a STA can be then included in multiple groups；

One signaling message is sent to a STA, to indicate the assignment group or multiple assignment groups of the STA；And

Its data is indicated to be included in using the field (or multiple fields) in the WLAN frame ins newly addition described The group of WLAN frame ins or multiple groups.

2. one kind newly adds the field of (or added to the packet of any wireless system) in a WLAN frame ins, and it can be used to having Body specify it is any what follows：

The field indicates include data in which group of the frame in or which group；Or

The field indicates do not include data in which group of the frame in or which group.

3. the method according to embodiment 1 or 2, wherein it is bitmap that the field of the new addition is encoded, so that, it is each The recognizable group number in the position of bit, and the numerical value of bit can recognize that the group whether there is or not exist.

4. a kind of for starting the method that battery and power are saved in a WLAN, it comprises the following steps：

The multiple STA associated with AP are organized as some groups (can be described as " power saves group ").

5. a kind of for starting the method that battery and power are saved in a WLAN, it comprises the following steps：

All (or some) traffic frames (by the field in the frame in) indicate the frame to be it and the work(comprising business Rate saves group's (or multiple power save group).

6. a kind of for starting the method that battery and power are saved in a WLAN, it comprises the following steps：

When a frame is sent to single STA, AP (by the field in the frame in) indicates the power section belonging to target STA Group of province.

7. a kind of for starting the method that battery and power are saved in a WLAN, it comprises the following steps：

When a frame is sent to multiple STA, AP (by the field in the frame in) indicates the work(belonging to each target STA Rate saves group.

8. a kind of for starting the method that battery and power are saved in a WLAN, it comprises the following steps：

When being transmitted to AP, the STA (by the field in the frame in) recognizes the power section belonging to the STA Group of province.

9. a kind of for starting the method that battery and power are saved in a WLAN, it comprises the following steps：

When being transmitted to AP, the STA (by the field in the frame in) recognizes the power section belonging to the AP Group of province.

10. a kind of for starting the method that battery and power are saved in a WLAN, it comprises the following steps：

When being transmitted to AP, the STA (by the field in the frame in) power described in nonrecognition saves group (for example, using the bitmap for being all " 0 " or using the bitmap for being all " 1 ").

11. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

When being transmitted to AP, STA (by the field in the frame in) identification is unique power to this AP Save group's (for example, the AP for example will be some of group 0).

12. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

Make the STAs for being organized as or being dispatched to power saving group by being not listening to (do not decode) whole for frame Or power is saved in part, wherein the frame indicates not include that power as (presence) saves group in the frame in.

13. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

When being transmitted to STA (or multiple STA), the AP is (by the field in the frame in, and particularly in institute State in the PHY headers of frame) indicate " traffic direction " be " to STA " (namely descending chain).

14. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

When being transmitted to AP, the STA (by the field in the frame in, and is particularly marked in the PHY of the frame In head) recognize that " traffic direction " is " to AP " (namely cochain).

15. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

STA is set to utilize " traffic direction " information to save work(by being not listening to (do not decode) all or part for frame Rate, wherein it is " to AP " (namely that the frame (in described frame header or in PHY or MAC headers) indicates " traffic direction " Cochain).

16. is a kind of for reaching the method that battery and power are saved in a WLAN, and it comprises the following steps：

STA or AP is received and decoding WLAN frames, untill its decoding and identifying power saving group information；And

Once the STA or AP recognize that its group is not included in the WLAN frame ins, then the STA or AP stop decoding or The other parts of the frame are received until one specifies untill the time (for example, untill end of the frame).

17. is a kind of for reaching the method that battery and power are saved in a WLAN, and it comprises the following steps：

STA or AP is received and decoding WLAN frames, until it has decoded whether the instruction reception STA is allowed to save power Field (or bit) untill；

The STA or AP is received and decoding WLAN frames, untill its decoding and identifying power saving group information；With And

Once the STA or AP recognize that its group is not included in the WLAN frame ins, and if the field (or ratio It is special) indicate to allow the reception STA or AP to save power, then the STA or AP stops decoding or receives other portions of the frame Point, untill the specified time (for example, untill end of the frame).

18. method according to embodiment 17, wherein previous signaling or message send (for example, through consultation or It is by using management, action or control frame) it is to be used between the AP and the STA, so that, the AP indicates whether Allow the receptions STA to save power, and the STA deposits interior by this type of information is stored within, and identifying that its group is It is no to use described information when not being included in the WLAN frame ins.

19. is a kind of for reaching the method that battery and power are saved in a WLAN, and it comprises the following steps：

STA or AP are received and decoding WLAN frames, until its decoded the instruction whether described STA of reception STA or AP or AP should be received and be decoded the word untill terminating at least up to MAC headers (for example, in MAC headers for the frame) Section；

The STA or AP is received and decoding WLAN frames, untill its decoding and identifying power saving group information；With And

Once the STA or AP recognize that its group is not included in the WLAN frame ins, and if the field (or ratio It is special) indicate the receptions STA or AP to be received and be decoded and terminate at least up to the MAC headers untill, then in reception And decoding is after the MAC headers terminate, the STA or AP stops decoding or receives the other parts of the frame, Zhi Daoyi Untill the time of specifying (for example, untill end of the frame).

20. method according to embodiment 19, wherein previous signaling or message send (for example, through consultation or It is by using management, action or control frame) it is to be used between the AP and the STA, so that, the AP indicates whether The reception STA should be received and decoded at least up to the MAC headers (for example, in MAC headers for the frame) Untill end, and the STA by this type of information is stored within deposit in, and identifying it is described whether its group is not included in Described information is used during WLAN frame ins.

21. is a kind of for reaching the method that battery and power are saved in a WLAN, and it comprises the following steps：

STA or AP are received and decoding WLAN frames, until its decoded the instruction whether described STA of reception STA or AP or During AP should be received and be decoded and use MAC headers (for example, in MAC headers for the frame)/id field Field；

The STA or AP is received and decoding WLAN frames, untill its decoding and identifying power saving group information；With And

Once the STA or AP recognize that its group is not included in the WLAN frame ins, and if the field (or ratio It is special) indicate the reception STA or AP should be received and be decoded at least up to the MAC headers during/id field terminates Untill, then after receiving and decoding such field, the STA or AP stops decoding or receives the other parts of the frame, directly Specified the time (for example, until end of the frame) to one.

22. method according to embodiment 21, wherein previous signaling or message send (for example, through consultation or It is by using management, action or control frame) it is to be used between the AP and the STA, so that, the AP indicates whether The reception STA should be received, decoded and be used the MAC headers (for example, in MAC headers for the frame) Period/id field, and the STA by this type of information is stored within deposit in, and identifying whether its group is not included in institute Described information is used when stating WLAN frame ins.

23. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

AP sends signal via the message of frame in is included in STA, and it is pointed out that the STA is assigned to and (or is organized Into) which power saving group.

24. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

STA confirms that the STA is assigned to the power section of (or being organized into) via the message for being included in frame in AP Group of province.

25. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

AP sends signal via the message of frame in is included in STA, and it points out that other STA are assigned to (or by group It is made into) which power saving group, it has the context for DLS or DLP.

26. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

STA confirms that other STA are assigned to the power of (or being organized into) via the message for being included in frame in AP Group is saved, it has the context for DLS or DLP.

27. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

AP sends signal via the message of frame in is included in STA, and it is pointed out that the AP is assigned to and (or is organized Into) which power saving group.

28. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

STA confirms that the AP is assigned to the power saving of (or being organized into) via the message for being included in frame in AP Group.

29. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

The STA for being associated AP is organized into the group that can be used for power saving；

The one or more power for making the AP be assigned to STA are saved group and are dispatched to STA and are led to signal Know STA；And

Power thereon is saved into group has the information including the data in WLAN frame ins including in the WLAN frame ins.

A kind of 30. WLAN frame formats comprising one or more fields, the one or more fields are used to provide any identification Or the form for indicating, the identification or instruction show which power saves the data that group includes such frame in.

31. a kind of WLAN frame formats, (for example, in PLCP in PHY (physical layer) part of the WLAN frame formats comprising frame In header) any power save group information.

32. a kind of WLAN frame formats, in MAC parts of the WLAN frame formats comprising frame (for example, in MAC headers) Any power saves group information.

33. a kind of WLAN frame formats, in SIGNAL fields of the WLAN frame formats comprising PLCP (for example, PHY) header Any power of (for example, in PLCP headers) saves group information.

A kind of 34. WLAN frame formats, the WLAN frame formats are included in the intrinsic SIGNAL of PLCP (for example, PHY) header Any power in field saves group information.

A kind of 35. WLAN frame formats, high production SIGNAL of the WLAN frame formats comprising PLCP (for example, PHY) header Any power in field saves group information.

A kind of 36. WLAN frame formats, the WLAN frame formats include TGnSync motions (reference number of a document IEEE 802.11- Any power in the HT-SIG fields of PLCP (for example, PHY) header 04/0889r44) saves group information.

A kind of 37. WLAN frame formats, the WLAN frame formats include WWiSE motions (reference number of a document IEEE 802.11-05/ Any power in the SIGNAL-N fields of PLCP (for example, PHY) header 0149r1) saves group information.

A kind of 38. WLAN frame formats, the WLAN frame formats include TGnSync motions (reference number of a document IEEE 802.11- Any power in any PHY or MAC headers 04/0889r44) saves group information.

A kind of 39. WLAN frame formats, the WLAN frame formats include WWiSE motions (reference number of a document IEEE 802.11-05/ Any power in any PHY or MAC headers 0149r1) saves group information.

40. a kind of WLAN frame formats, so as in PLCP (for example, PHY) header (for example, HT-SIG or SIGNAL-N) Some fields for defining or retaining in SIGNAL fields can be redefined saves group information with comprising power.

A kind of 41. methods for strengthening the power saving group information confidence level for being included in frame in, it comprises the following steps：

Calculating is included in coding or the inspection of the CRC or any other forms of the power saving group information of frame in With；And

The CRC that will be calculated is included at the frame in (for example, in header).

A kind of 42. methods for strengthening the power saving group information confidence level for being included in frame in, it comprises the following steps：

The power is saved into group information includes the SIGNAL fields in the frame (for example, HT-SIG or SIGNAL- N in)；And

Using some or all elements of the SIGNAL fields for saving including the power group information, institute is calculated State the crc field of SIGNAL fields.

A kind of 43. WLAN frame formats, the WLAN frame formats save group's letter in the PHY parts of frame comprising some power Breath, and, group information is saved (for example, when MAC parts can be with comprising some other power in the MAC parts of the frame When providing sequential relevant information, PHY parts can be provided in the information that the frame in has group).

A kind of 44. WLAN frame formats comprising field (or bit), the field (or bit) indicates such frame Whether comprising the field (or multiple fields) for providing power saving group information.

A kind of 45. WLAN frame formats comprising field (or bit), the field (or bit) indicates such frame Whether comprising the field (or multiple fields) for providing the extra extension that power saves group information.

A kind of 46. WLAN frame formats comprising field (or bit), the field (or bit) is indicated in the frame Internal power saves presence or the validity of group information, and it can be described as PVF (existing or validity flag).

47. one kind are used by AP or any STA and are organized into group's (can be described as " power saves group ") with by STA Method, it comprises the following steps：

The AP performs lookup in a memory table, to find out the introduction point of storage STA addresses (or any STA attributes)； And

Using look-up table introduction point index or its any function or change group is saved as the power assigned.

48. one kind are used by AP or any STA and are organized into group's (can be described as " power saves group ") with by STA Method, it comprises the following steps：

Using the bit subgroup of the address (for example, MAC Address) from STA, for example, using STA MAC Address (or Its change) two minimum significant bits, with the group that will be assigned as the STA therein.

49. one kind are used by AP or any STA and are organized into group's (can be described as " power saves group ") with by STA Method, it comprises the following steps：

Determined using the hash function or any other function on its any attribute on the address of STA described The group that STA will be assigned to.

50. one kind are used by AP or any STA and are organized into group's (can be described as " power saves group ") with by STA Method, it comprises the following steps：

Monitoring measures in AP regions the business load of some groups or some STA and/or utilizes grade；And

In the algorithm using business load and/or using numerical value for assignment group.

51. one kind are used by AP or any STA and are organized into group's (can be described as " power saves group ") with by STA Method, it comprises the following steps：

To be usually to be dispatched to identical power using the STA of similar data rate or similar power level to save group Group.

52. one kind are used by AP or any STA and are organized into group's (can be described as " power saves group ") with by STA Method, it comprises the following steps：

STA is dispatched to identical power and saves group, STA therein is usually have the industry with similar qos requirement Business.

53. one kind are used by AP or any STA and are organized into group's (can be described as " power saves group ") with by STA Method, it comprises the following steps：

STA is dispatched to identical power and saves group, STA therein is usually have to be integrated with similar frame to require The business of (or similar historical frames integrated curriculum types).

54. one kind are used by AP or any STA and are organized into group's (can be described as " power saves group ") with by STA Method, it comprises the following steps：

To be usually that there is the STA of similar type of service or business need to be dispatched to identical power to save group.

55. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

One or more power saving group is dispatched to identical STA.

56. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

One or more groups are specifically assigned the frame that broadcast to the business of all STA is contained to recognize.

57. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

One or more groups are specifically assigned the frame that the business for being multicasted to some STA is contained to recognize.

58. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

One or more groups are specifically assigned and is identified with to belonging to a certain types of frame (such as management frame).

59. save group field content for other purposes (for example using the power described by any preceding embodiments Scheduling implementations, multicast group identification, relatively easily address etc.) method.

60. it is any using certain cluster classes for other purposes or the method or concept of function, so as to reuse Those groups save the purpose of information for offer power.

61. is a kind of for saving the method that group information is encoded to power, wherein, using a bitmap, wherein in institute Each bit in rheme figure be specifically designated belong to such group packet whether there is or do not exist.

62. is a kind of for saving the method that group's timing information is encoded to power, wherein, come using little bit The fragment of a duration is indicated, in this duration, STA can be sunk into sleep, but in this time point, STA should wake up and monitor it The beginning of data.

63. is a kind of for providing the method that power saves information, wherein providing the sequential relevant with a duration field Information, it is described lasting so as to be derived from the length and speed field of PLCP headers intrinsic signal, high production signal or MAC headers Period field.

64. is a kind of for providing the method that power saves information, wherein providing the sequential relevant with a duration field Information, thus the duration be it is a kind of for power save purpose newer field (for example, it is new be sunk into sleep duration section or It is that power saves duration section).

65. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

If STA discoveries need more power to save in itself, the STA sends a signaling message to AP, it is desirable to new Power is saved group and is assigned.

66. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

If STA discoveries need more power to save in itself, the STA sends a signaling message to AP, it is desirable to described AP should not place its data integrating in frame or burst；And

The STA can recognize this as a kind of integrating packet and will not be right with (using the integration bit in HT-SIG fields) It is read out or enters row decoding to it.

A kind of 67. WLAN frame formats, it includes a bit and is continued with indicating MAC NAV duration and PHY to deceive Whether the time matches.

A kind of 68. WLAN frame formats, it includes traffic direction information in PHY headers.

A kind of 69. purposes saved for power using traffic direction information in embodiment 68 are (if for example, business AP is directed towards, then all of STA for decoding such traffic direction information can cease listening for and save power).

70. is a kind of using being currently included in the traffic direction information of WLAN MAC headers (for example, " to DS " or " coming from DS ") purpose saved for power is (if for example, business is directed towards AP, decode all of of such traffic direction information STA can cease listening for and save power).

A kind of 71. WLAN frame formats, it includes that indication field shows that it should be at a distance carried out more than the frame in to STA Read.

A kind of 72. WLAN frame formats, it include indication field to STA show its can the where of the frame in or what When cease listening for.

A kind of 73. WLAN frame formats, it includes that information needs are read, decode and explain or require STA in frame in Many monitoring directions monitored at a distance indicate (LDI) field.

A kind of 74. WLAN frame formats, it includes a field (for example, bit) to indicate depositing for the HT-SIG fields of an extension Or in the HT-SIG fields extra OFDM symbol presence so that the field or symbol can include certain work( Rate saves information.

A kind of 75. WLAN frame formats, it includes a field (for example, a bit) to indicate to have an extension in frame header SIGNAL fields (for example, HT-SIG or SIGNAL-N), wherein the SIGNAL fields of the extension generally include power section Province's information.

A kind of 76. WLAN frame formats, its include in many poll frames of the MRAD (for example, MMP) for GPI, GTI or One field of GPTI.

A kind of 77. MRAD frame formats, it includes the field for GPI, GTI or GPTI.

A kind of 78. MMP frame formats, it includes the field for GPI, GTI or GPTI.

79. any IAC/RAC, RTS/CTS, reverse traffic, CF- polls, QoS polls or BA/BAR frame formats, its warp Modify with the field including saving information for GPI, GTI, GPTI or any other power.

80. any WLAN frame formats including timing information coding, timing information coding utilizes " basic duration " And communication should be multiplied by one " fragment " of " the basic duration ".

81. any WLAN frame formats using encoded timing informations (for example, offset information), when described encoded Sequence information includes " basic duration " and one " fragment " or " basic duration " and " polynary (multiple) ".

82. " basic duration " were defined as " deceiving the duration " or were derived from " deceiving the duration ".

83. " basic duration " were defined as " NAV duration " or were derived from " NAV duration ".

84. it is any for by the assignment group of STA, the assignment group of AP or the assignment group of some other STA believing Number send to the STA or be communicated to the WLAN frame formats of the STA.

85. it is any for by the assignment group of STA, the assignment group of AP or the assignment group of some other STA believing Number send to the STA or be communicated to the management of the STA, action, control or data frame.

86. it is any for by the assignment group of STA, the assignment group of AP or the assignment group of some other STA believing Number send to the STA or be communicated to the IAC/RAC of the STA, RTS/CTS, reverse traffic, CF- polls, QoS polls or It is BA/BAR frame formats.

87. it is any for by the assignment group of STA, the assignment group of AP or the assignment group of some other STA believing Number send to the STA or be communicated to the WLAN frame formats of the STA.

88. any management, action, control or data frame, it is used from STA and sends renewal with to AP, confirmed or should Answer the assignment group or the assignment group of some other STA that assign group, AP of the STA.

89. any IAC/RAC, RTS/CTS, reverse traffic, CF- polls, QoS polls or BA/BAR frame formats, its by STA is used and update, confirm or STA described in response assigns group, the assignment group of AP or some other being sent to AP The assignment group of STA.

90. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

STA sends a signaling message using management, action, control or data frame, is low to indicate its battery to AP Power and the possible power level of its battery or duration.

91. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

STA sends a signaling message using management, action, control or data frame, indicates it had better not to adopt with to AP With all or certain specific integration or bursting scheme part saving its power.

92. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

STA sends a signaling message using management, action, control or data frame, and its desired request work(is indicated with to AP Again the assignment of rate group is saving more power.

93. is a kind of for starting the method that battery and power are saved in a WLAN, and it comprises the following steps：

STA consult, association, set up or any other stage using management, action, control or data frame send one Signaling message, to indicate the ability and preference of STA, so as to participate in all or some integrated schemes.

A kind of 94. STA consult, association, set up or any other stage using management, action, control or data frame Send the STA of a signaling message, be used to indicate STA ability (for example, STA can indicate its can not receive integration frame or Certain types of integration frame).

Whether negotiable its of a kind of 95. STA, the STA is supported to multiple destinations or the integration to single destination The reception of frame.

A kind of 96. STA, the STA can be before association, just after association, after association later time or will be by Whether the data for consulting STA with AP will be integrated or should use any time of which kind of type integrated scheme, via Management, action, control or data frame send feature, capabilities list or the list of preferences of its support.

Any embodiment in 97. preceding embodiments, wherein the embodiment is for MRMRA, MMRA, MRAD or MMP Context in.

98. using the reservation bit in intrinsic SIGNAL fields indicate this for a kind of extrinsic frame format (for example, 820.11n frames) any WLAN frame formats.

Any WLAN frames that 99. power for starting intrinsic device using the reservation bit in intrinsic SIGNAL fields are saved Form.

100. indicate any WLAN frames lattice that this is a kind of integration frame using the reservation bit in intrinsic SIGNAL fields Formula.

Any embodiment in 101. preceding embodiments, wherein, such as in mesh network environment, if using AP, with WLAN STA replace the AP, so that other STA can be as AP.

Any embodiment in 102. preceding embodiments, it is used for WLAN ad-hoc networks, WLAN mesh networks or nothing Line Wide Area Network (for example, 802.16).

Any embodiment in 103. preceding embodiments, it is used for other wireless lan technologys and standard.

Any embodiment in 104. preceding embodiments, it is used for other wireless communication systems, such as cell system, described small Sound zone system includes but is not limited to UMTS, WCDMA, CDMA 2000, HSDPA and HSUPA.

Claims (11)

1. a kind of method for saving power in wireless communications used in 802.11 access points, the method includes：

Assign multiple 802.11 platforms as in cadres and masses group；

Each 802.11 platform in transmission group identifier to the multiple 802.11 platform；And

It is in the first frame that each group with the data in first frame indicates the group identifier, wherein described the Do not exist respective group identifier in one frame, then indicate ingoing power save mode to corresponding respective 802.11 platform.

2. method according to claim 1, wherein, it is described assign include being based on a function application to each 802.11 platform Media access control address assign the multiple 802.11 platform.

3. method according to claim 2, wherein, the function is hash function.

4. method according to claim 1, wherein, the assignment include it is following it is every in any one：

Assign the multiple 802.11 platform based on each media access control address；

Business use value based on each platform assigns the multiple 802.11 platform；

Requirement is integrated based on similar frame to assign the multiple 802.11 platform；

Assign the multiple 802.11 platform based on similar data rate；

Assign the multiple 802.11 platform based on similar power level；

Assign the multiple 802.11 platform based on similar service quality requirement；

Assign the multiple 802.11 platform based on similar application requirement；

The multiple 802.11 platform is assigned based on the requirement of similar RRM；Or

The multiple 802.11 platform is assigned in more than one group.

5. method according to claim 1, wherein, the transmission includes sending a message to 802.11 platforms, the message package Containing the respective group identifier.

6. method according to claim 5, wherein, the message is any one in following items：Starter is integrated Control frame, responsor integral traffic control frame, immediately transmission frame, remove sending frame, Modulation and Coding Scheme claim frame, modulating-coding side Case feedback frame, block confirmation request frame, block acknowledgement frame, association request frame, association response frame, again association request frame, associate again Response frame, exempt from compete poll frame or quality of service poll frame.

7. method according to claim 5, wherein, the message is group's assignment message.

8. method according to claim 1, wherein, the sign is included using the field in first frame come comprising institute State group identifier or which group is indicated using the field in first frame without the data in first frame.

9. method according to claim 8, wherein, the field includes bitmap, wherein each bit in the bitmap Location recognition group number, and the value of wherein described bit indicates whether the group has data in first frame.

10. method according to claim 1, the method is further included：

The request for being assigned to different groups again is received from 802.11 platforms.

11. methods according to claim 10, wherein, under the situation of 802.11 platform sign low power condition, The request is received.