CN107105424A - Efficient addressing and power saving method and system in wireless system - Google Patents

Efficient addressing and power saving method and system in wireless system Download PDF

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Publication number
CN107105424A
CN107105424A CN201710188436.1A CN201710188436A CN107105424A CN 107105424 A CN107105424 A CN 107105424A CN 201710188436 A CN201710188436 A CN 201710188436A CN 107105424 A CN107105424 A CN 107105424A
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China
Prior art keywords
group
sta
frame
information
platform
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CN201710188436.1A
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Chinese (zh)
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CN107105424B (en
Inventor
穆罕默德·萨摩尔
苏希尔·A·格兰帝
亚蒂·钱德拉
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InterDigital Technology Corp
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InterDigital Technology Corp
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Priority claimed from US11/406,877 external-priority patent/US7577438B2/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/186—Processing of subscriber group data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0219—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave where the power saving management affects multiple terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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

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 directed to each group for having data in the frame and is shown in frame.The addressing method can be employed to save the platform power, if wherein when the group identifier 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
The application is the applying date on April 20th, 2006, Application No. 200680013768.6, entitled " in wireless system The divisional application of the Chinese patent application of efficient addressing and power saving method and 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 proposes mechanism for the two 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 TGnSync, and the different type frame that WwiSE or both proposes is integrated and frame bursting scheme.Integrated scheme is big Cause to distinguish according to the packet part of its integration.
M AC (MAC) service data unit (MSDU), which integrates (100), can integrate one or more medium access controls Service data unit 102 processed is to form an integration medium access control service data cell (A-MSDU) 104, and each medium access is controlled 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 to form 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 Member 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.Include 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 to form an en-tity protocol data unit (PPDU) 134.
En-tity protocol data unit, which integrates (140), 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.Include an intrinsic training and signal The HT of field 150 and one 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 Platform (STA) is measured with single medium access transmission sequence of frame 162.Each frame 162 includes an entity header 164, with an intrinsic training And the HT of signal field 166 and one 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, which can be supported to be scheduled, is 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 integrated.For example, because medium access control service Data unit aggregation scheme only includes a media access control address of recognizable single 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 Member includes a media access control address of recognizable different wireless local area network network receiver address, so M AC is assisted The bursting scheme of data unit aggregation, the integration of en-tity protocol data unit and en-tity protocol data unit is discussed, can be used for singly connecing Device is received to integrate or multiple collector integration.
Frame is integrated and bursting scheme has increase WLAN system efficiency and the benefit of 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 the data (namely what WLAN destination-address) about any station platform are contained in integration frame and prominent Knowledge in hair is not provided in advance, then each platform in WLAN, which must be received and decoded, all integrates 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 and (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.
The related knowledge in advance of data integrated by providing any station platform to have in frame or burst, it is all without integrate frame or The platform of 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 is waken up using prior timing information during the integration frame comprising its data or burst part and (monitors and decode) simultaneously It is sunk into sleep during the remaining part not comprising its data, thereby reduces its power consumption.
In prior art, the proposal saved with some support power/batteries.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 one Member 206.Entity header 204 includes an intrinsic training and the HT of signal field 208 and one 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 respectively 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 frame or the data in 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 (namely deenergize its receiver) can be sunk into sleep untill 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 connects until it receives its all medium Untill entering the different receiver addresses in control protocol data cell and the next medium access control protocol data cell of detecting, its (namely deenergize its receiver) can be sunk into sleep on the aspect untill 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, be not suitable for en-tity protocol data unit bursts.
One motion illustrates that multi tate (or many MCS) multiple collector integrates (MMRA), and it is integrated about multi tate multiple collector Power is supported to save when being used.The motion is included 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 Length very big and inefficiency is accorded with, it is variable length, and can be only simplified by using fixed length packets.Also because this is big Field, power saves information and can not be embedded into and should be maintained in the physical layer of small size.Because power is saved information and connect in medium Enter and transmitted in controlled level, passed so it integrates descriptor because of multiple collector 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 stood 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 can not 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 (are 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 by some groups of the platform in dispatching system as Start.Group identifier is transferred into each platform, and the group identifier is to be directed to each group for having data in the frame to be marked It is shown in frame.
It is a kind of to promote the method that wireless communication system power is saved by some groups of the platform in dispatching system as opening Begin.Group identifier is transferred into each platform, and the group identifier is to be directed to each group for having data in the frame to be 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 the traffic direction sign to indicate traffic direction 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 to be received and decoding frame at platform, until platform decoding Power is used as untill saving marking device to be started.If the power saves marking device, power saving mode can be used in sign platform, stands Platform ingoing power save mode.
A kind of method for promoting wireless communication system power to save is to transmit platform of the timing information into frame, the time point Information takes a part of frame and is used 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 after power saving mode is left receives and decode 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 frame using by the sign of the platform decoding of the expection 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 from platform, comprising 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 transport-type of second frame is the transmission class that the platform has 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 conceptual scheme using multiple collector integration descriptor Mark；
Fig. 3 illustrates for packet platform and with the group of access point communication；
Fig. 4 is using the group identifier information example being connected during being sunk into sleep with timing information and platform；
Fig. 5 A are both to deposit 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 both to deposit in TgnSync entity headers both to deposit HT-SIG fields diagram；
Fig. 6 B are to include HT-SIGXThe 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.
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 any other type component being operable 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, comprising integrating frame, nonconformity frame, connect inversion scheme, such as multiple response more The multiple response device scheme that device integrates (MRMRA) is received, reverse traffic, many wheels inquire about multiple response multiple collector and integrate many polls (MMP). Therefore, power defined in the present invention is saved scope and can covered individually, is not integrated, or the frame that single collector is integrated, all quilts Integrate frame or outburst type, and all schemes with multiple response device or using many polls.
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 It is different groups to organize the platform (these platforms such as associated from access point) serviced, 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 save can also be not required to the bright whole media access control address or certain media access control address for determining platform can by up to Into.In addition, " 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 access point 300 may organize six platforms (302-312) serviced to be four groups.One possibility is 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.One platform can be also put into 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 any message pattern can be used to send for the decision of access point 300 assignment platform to one or more groups, then its 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 the platform #6 that assigns or classify is 1 part of group, management frame, action action frame, control frame or data frame can be used in access point 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 (is such as used for barrier and confirms that (ACK) is set up, Business Stream is set up, or direct link Agreement (DLP) creator)；As confirmed, barrier confirms to require that (BAR) and barrier 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 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 Transmit message.Access point, which can rely on oneself, itself will be classified as special Group Partial, no 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 such as recognized by all 0 and 1 that all platforms are noticed Group；In Fig. 3, access point belongs to group 0.It 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 in direct link or directly In the specific context network for meeting link protocol (DLS or DLP), access point it is transmittable when it is direct talk with another platform when it should make Group identifier (namely whichever should be other platforms be assigned into group) or alternative 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 the information is inputted into the platform or access point.Meanwhile, being assigned algorithm can be designed For assigning, thereby platform can be used without or clearly communication/signaling is relied on oneself and itself will 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 has for belonging to the differentiation between many platforms of same group.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 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 pass through N Repeated order member (g1, g2 ..., gN) is identified, and platform will be assigned N values, and one is worth for each N-dimensional degree (namely group combines).
Group also can be by considering that other characteristics are defined.For example, a group can recognize that whether broadcasting service 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 group 0 can be used in it has the scheduled broadcasting service for being sent to all platforms to indicate, 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, which can be used to represent data type,.
Similar concept can be applied to multiple spot business transferring, 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.
With many possible algorithms that can be used for tissue platform and/or different service types are available groups.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 wherein platform can be used to be 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 the other spies of business Property).Third algorithm is to load (namely business is used) to each group (or its platform) monitoring (measurement), and between all groups The mode for producing approximate even load dynamically changes group assignment.4th algorithms selection minimum uses group (being used with business) To be assigned to newest related platform.Other algorithms use comprising segmentation/load between all groups of balance/is attempted, and consider it There is similar frame to integrate requirement for its factor, such as encapsulation/packet, using similar data rate or power level, or with similar clothes These platforms in quality of being engaged in or the same group of RRM requirement.
Transmit group's 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 barrier confirms that requirement/barrier confirms, 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 comprising 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 whether group 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 again to different groups
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 is put down, and if its power outage (namely when specific door is intersected), it can connect via power supply very low news Access point, and it may require group and assigns again.Platform can be clearly comprising its battery levels in the requirement.When receiving message, Access point can determine to deny or receive the requirement of platform and can assign the platform into new group.Because management, action, control or Data frame sign is 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 saves group information using power 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 increase powerful information and are 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), similar data rate, similar 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 can be included workable for WLAN 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 and is saved comprising power in the example of information per frame, 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 header extension includes all or some power Save 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 another use of validity flag signable power saving (such as by using another bit) Whether group information is effective.
There is (or occurring without) marking device (GPI) in group
Frame includes the scheduled platform group being sent to of recognizable frame.(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 including four bits (b1, b2, b3, b4), and thereby whether 2 value sign frame, which includes, is assigned to group 2 An at least platform data.In order to illustrate, when access point transfers data to single platform as the part of group 2, access point Bitmap 0100 can be used and belongs to the platform of group 2 to indicate and has and come across by some of transmission frame data, and the frame has no Include the data for belonging to other three group.
Alternative to be, group, which can be defined to be indicated this frame using rule encoding (such as 10) and included to be scheduled to be sent to, belongs to group The data of the platform of group 2.
Another example, when access point (is such as worked as using frame is integrated and uses service data unit aggregation, medium access control protocol number 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 for an at least platform of the 0110 bitmap values sign frame comprising group 2 and group 3, 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, used group number 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 are (intrinsic Signal, HT-SIG, or signal-N) in.
Group's timing information (GTI)
Multiple collector is integrated can be to being integrated in these platforms saving of frame in compared with Gao Gong there is provided group's timing information in example Rate.Because (or occurring without) marking device can still occur by using group in group's timing information 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 and (namely not receive 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 The receiver address modification in frame in next fragment data is integrated in its data and detecting, and power is saved and 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 which 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) it 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, which can be encoded and be communicated by using dibit, Its mean group's time started (such as group time skew) for it is any come self-reference time point (3/4 × 16=) 12 time quantum.
Basic Duration Information can be exported from the field of both depositing in WLAN frame header.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 export basic Duration Information.Basis be persistently same as from physical layer information be exported when deceiving lasting Between (SD).Coding can be provided as the basic duration by deceiving the duration (or any variation that can be exported from it) using this And the efficiency method of time point (as offset) information.Alternative to be, duration/identifier field of M AC header can It is used to export the basic Duration Information.
It is shown in using the timing information example based on deceiving duration and group's timing information in Fig. 4.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 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, reverse traffic, many wheels Ask, or in multi tate multiple collector integrated scheme, the basic duration can cover the frame sequence full duration 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 It must be specified and communicate.For example, it is assumed that four denominators, then dibit can be used to group's timing information.
Again exemplified 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 The one of information may mode be that there is dibit per group, 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 the time migration information at or near beginning, the basic duration must be multiplied by ' b3b4 ' by we Value and divided by four.When the frame includes the data for the platform (namely when the group of platform comes across frame in), the time Offset information is substantially interpreted platform by the time at or near monitoring frame.
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.It is may be included with for example, (or occurring without) marking device occurs in group in 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, which occur, in group's timing information and group is defined as two independent fields, it is also It can be merged together and encode appearance and timing information to define a field (group's appearance and time point letter by using predetermined image 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 beginning listening for and being sunk into sleep during frame entirety transmission at the end of deceiving the duration, so the 11 signable group of particular example Occur without.Group occurs and timing information may be included with frame header, 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
With using in the multi-access point system of identical frequency channel, give in cell (namely access point coverage area) Platform can monitor betide it is another nearby or adjacent cell in frame transmission.Effect is saved in order to capture preferable power in the example Can, WLAN frame can be comprising access point identification, and it is referred to alternatively as " access point color " or " groups of access points " or " cell Color " or " cell identification ".Access point color, which differs, 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 identical frequency channel, then access point color is recognized by using dibit, 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 such as associated with access point 1 by be not listening to or decode it is 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 the above method can be used to save power.
MonitorDirection indicates (LDI)
Monitor direction or indicate that explanation 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, which 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, the responsible entity header information of platform (compile by such as length and speed, modulation Code scheme or Config fields) update its NAV duration value.
Even if receiving the expection receiver of platform not frame, (such as bit or a little of field in header still can be used in frame conveyer Perhaps bit) bright fixed reading and decode whether all or some M AC header informations need to receive platform.Conveyer also may be used Whether should be to be contained in intrinsic entity header (such as intrinsic signal field), high production using the bright platform that receives surely of another field (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 to update its part.
Some recessive criterions can be used to export duration/identification field of M AC header (or substantially Whole M AC header) whether need to be read.One criterion is comparable to 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 Amount, then the difference can be interpreted further to read and solution is 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 instruction is to indicate platform It is no to be sunk into sleep immediately, or should not be sunk into sleep and keep monitoring until it decodes (or the medium access control of first medium Access Control header Some fragments of information processed) and be then sunk into sleep.It is relevant monitor how deep this of 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 " come from DS " fields.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 for can make platform consume too many power specified scheme part signal to access point, Such as specific integration or bursting scheme, the power of platform is thereby saved.Do not want to make to be scheduled to be sent to its for example, platform can be used Data turn into the frame (management, action, control or data frame) for integrating frame part.If access point agrees to the requirement and confirms to agree to back To platform, then the platform by being sunk into sleep can save power when frame is detected using specified scheme.For example, when detecting frame is integrated (by using signal field, the information in such as HT-SIG fields), platform can be sunk into sleep during frame is integrated.
Platform, which can be used, not to be wanted to make scheduled its data that are sent to integrate as particular type, such as multiple collector integration portion The frame divided.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 frame does not include the data of 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 Can be by being characterized table row 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 later 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.The remaining work(of platform also in signable message Rate amount, and its preference are excluded from or alternative are incorporated into.
Frame type indicators
The use of 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 transmission of these extrinsics (such as 802.11n frames are transmitted), So this field can be used for saving the power that intrinsic device is newly implemented and (newly sent).
It is sunk into sleep timer
In order to prevent from platform from maintaining being sunk into sleep the fast knot situation in one long period because of error situation, when platform enters mould of being sunk into sleep During formula, timer mechanism is implemented at platform.If platform is sunk into sleep interval (configurable parameter) more than the scheduled time, 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 some fragments of group information and may be included with frame ad-hoc location (such as In entity header), and the power saving some other fragments of group information 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 integrating in the middle of frame or burst, 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, many wheels inquire about polyphony 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 integrates descriptor or multiple response multiple collector is integrated in many polls.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 a bit and PLCP header has one to retain ratio 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 to include HT-SIGXThe 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-SIGXPart 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-SIGXPortion Dividing 652 to be shown, there are all power to save group information field, HT-SIGXPart 652 can be saved with any number power Group information field is constructed without influenceing efficiency of the present invention.In addition, exemplified by shown power saves group information field order only Card, and skilled artisan can arrange order of the field again without influenceing 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 the script of its in reserved field position, or reserved field can be rearranged and save group information field to form power that is adjacent Space.
Fig. 7 A are both depositing signal-MM fields 702 and both deposit 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 to include the signal-MM fields 752 in WWiSE entities header 750 and the icon of signal-N fields 754.Power Saving group information field, which can be placed on, had both 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 saving group information fields 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 that adjacent air space of power saving group information field.
Verify that power saves group information
Power is saved group information integrality (correctness) and can 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 be 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 Export.
Even if most of explanations and example say integration frame, but all explanations and example also can equally apply dashing forward to frame Hair or frame sequence, such as entity protocol Data Unit are happened suddenly, and multiple response multiple collector is 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, such as BSS, ESS, and IBSS is 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 that access point does not appear as node 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 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 access (HSDPA) of speed, high speed cochain packet access (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 STA address) tissue in WLAN coverage areas/be categorized as some groups Group, one of group can include multiple STA, and a STA can then be 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
Using the field (or multiple fields) newly added in the WLAN frame ins to indicate that it is described that its data is included in The group or multiple groups of WLAN frame ins.
2. a kind of field that (or added to the packet of any wireless system) is newly added in a WLAN frame ins, it can be used for 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 position of bit can recognize that group number, and the numerical value of bit can recognize that the group whether there is or be not present.
4. a kind of be used to start 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 be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
All (or some) traffic frames (by field in the frame in) indicate the frame for it work(comprising business Rate saves group's (or multiple power save group).
6. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
When sending a frame to single STA, AP (by field in the frame in) indicates the power section belonging to target STA Group of province.
7. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
When sending a frame to multiple STA, AP (by field in the frame in) indicates the work(belonging to each target STA Rate saves group.
8. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
When being transmitted to AP, the STA (by field in the frame in) recognizes the power section belonging to the STA Group of province.
9. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
When being transmitted to AP, the STA (by field in the frame in) recognizes the power section belonging to the AP Group of province.
10. a kind of be used to start 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. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
When being transmitted to AP, STA (by field in the frame in) identification is unique power to this AP Save group (for example, the AP for example by be group 0 some).
12. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
Make to be organized as or be dispatched to a power to save the STAs of group by being not listening to and (not decoding) whole of a frame Or power is saved in part, wherein the frame indicates that not including power as (presence) in the frame in saves group.
13. a kind of be used to start the method that battery and power are saved in a WLAN, 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 that " traffic direction " is " to STA " (namely descending chain).
14. a kind of be used to start 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, and is particularly marked in the PHY of the frame In head) recognize that " traffic direction " is " to AP " (namely cochain).
15. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
STA is set to utilize " traffic direction " information to save work(by being not listening to and (not decoding) all or part of a frame Rate, wherein the frame (in the frame header or in PHY or MAC headers) indicates that " traffic direction " is " to AP " (namely Cochain).
16. a kind of method for being used to reach that battery and power are saved in a WLAN, 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 untill one specifies the time (for example, untill the end of the frame).
17. a kind of method for being used to reach that battery and power are saved in a WLAN, 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 are 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 stop decoding or receive other portions of the frame Point, (for example, untill the end of the frame) untill one specifies the time.
18. the 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. a kind of method for being used to reach that battery and power are saved in a WLAN, 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 the first MAC headers of the frame) Section；
The STA or AP are 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 that the receptions STA or AP should be received and decoded and terminate at least up to the MAC headers untill, then in reception And decode after the MAC headers terminate, the STA or AP stop decoding or receive the other parts of the frame, Zhi Daoyi (for example, untill the end of the frame) untill the time of specifying.
20. the 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 the first MAC headers of 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. a kind of method for being used to reach that battery and power are saved in a WLAN, 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 and use MAC headers (for example, in the first MAC headers of the frame) during/id field Field；
The STA or AP are 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 stop decoding or receive the other parts of the frame, directly (for example, untill the end of the frame) untill one specifies the time.
22. the 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 using the MAC headers (for example, in the first MAC headers of 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. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
AP sends signal via being included in the message of frame in STA, and it is pointed out that the STA is assigned to and (or organized Into) which power saving group.
24. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
STA is assigned to the power section of (or being organized into) via the message for being included in frame in the AP confirmations STA Group of province.
25. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
AP sends signal via being included in the message of frame 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. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
STA is assigned to the power of (or being organized into) via the message for being included in frame in AP confirmations others STA Group is saved, it has the context for DLS or DLP.
27. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
AP sends signal via being included in the message of frame in STA, and it is pointed out that the AP is assigned to and (or organized Into) which power saving group.
28. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
STA is saved via the message for being included in frame in the AP confirmations AP power for being assigned to (or being organized into) Group.
29. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
The STA for being associated AP is organized into the group saved available for power；
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, and there is the information including the data in WLAN frame ins to include in the WLAN frame ins.
30. a kind of WLAN frame formats for including one or more fields, the one or more fields are used to provide any identification Or the form indicated, the identification or instruction show which power saves the data that group includes such frame in.
31. (for example, in PLCP in a kind of WLAN frame formats, 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, (for example, in MAC headers) in MAC parts of the WLAN frame formats comprising frame Any power saves group information.
33. in a kind of WLAN frame formats, SIGNAL fields of the WLAN frame formats comprising PLCP (for example, PHY) header Any power of (for example, in PLCP headers) saves group information.
34. a kind of 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.
35. a kind of WLAN frame formats, the WLAN frame formats include the high production SIGNAL of PLCP (for example, PHY) header Any power in field saves group information.
36. a kind of 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.
37. a kind of 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.
38. a kind of 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.
39. a kind of 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 that 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 to save group information comprising power.
41. a kind of strengthen the method for saving group information confidence level included in the power of frame in, it comprises the following steps：
The power calculated included in frame in saves coding or the inspection of the CRC or any other forms of group information With；And
The CRC calculated is included at the frame in (for example, in header).
42. a kind of strengthen the method for saving group information confidence level included in the power of 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 that group information is saved including the power, institute is calculated State the crc field of SIGNAL fields.
43. a kind of 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).
44. one kind includes the WLAN frame formats of field (or bit), the field (or bit) indicates such frame Whether the field (or multiple fields) that power saving group information is provided is included.
45. one kind includes the WLAN frame formats of field (or bit), the field (or bit) indicates such frame Whether the field (or multiple field) of extra extension that power saving group information be provided is included.
46. one kind includes the WLAN frame formats of 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. a kind of used STA being organized into group's (can be described as " power saves group ") by AP or any 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
Group is saved by the use of look-up table introduction point index or its any function or change using the power as assignment.
48. a kind of used STA being organized into group's (can be described as " power saves group ") by AP or any 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 It changes) two minimum significant bits, with as the STA therein by the group being assigned.
49. a kind of used STA being organized into group's (can be described as " power saves group ") by AP or any STA Method, it comprises the following steps：
Determined using the hash function or any other function on STA address on its any attribute described STA is by the group being assigned to.
50. a kind of used STA being organized into group's (can be described as " power saves group ") by AP or any STA Method, it comprises the following steps：
Monitoring measures in AP regions some groups or some STA business load and/or utilizes grade；And
In the algorithm using business load and/or using numerical value for assignment group.
51. a kind of used STA being organized into group's (can be described as " power saves group ") by AP or any 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. a kind of used STA being organized into group's (can be described as " power saves group ") by AP or any STA Method, it comprises the following steps：
STA is dispatched to identical power and saves group, STA therein is usually with the industry with similar qos requirement Business.
53. a kind of used STA being organized into group's (can be described as " power saves group ") by AP or any STA Method, it comprises the following steps：
STA is dispatched to identical power and saves group, STA therein is usually to have to integrate with similar frame to require The business of (or similar historical frames integrated curriculum types).
54. a kind of used STA being organized into group's (can be described as " power saves group ") by AP or any STA Method, it comprises the following steps：
To be usually that the STA with similar type of service or business need is dispatched to identical power saving group.
55. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
One or more power saving group is dispatched to identical STA.
56. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
One or more groups are specifically assigned and contain broadcast to the frame of all STA business to recognize.
57. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
One or more groups are specifically assigned and contain the frame of the business for being multicasted to some STA to recognize.
58. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
One or more groups are specifically assigned to be identified 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 embodiment Dispatch implementations, multicast group identification, relatively easily address etc.) method.
60. any use 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. a kind of be used to save the method that group information is encoded to power, wherein, using a bitmap, wherein in institute Each bit in rheme figure, which is specifically designated, to be belonged to the packet of such group and whether there is or be not present.
62. a kind of be used to save the method that group's timing information is encoded to power, wherein, come using seldom bit The fragment of a duration is indicated, in this duration, STA can be sunk into sleep, but in this time point, STA, which should wake up, monitors it The beginning of data.
63. a kind of be used to provide the method that power saves information, wherein providing the sequential relevant with a duration field Information, so that length and the speed field export from PLCP headers intrinsic signal, high production signal or MAC headers are described lasting Period field.
64. a kind of be used to provide 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. a kind of be used to start the method that battery and power are saved in a WLAN, 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 assigned.
66. a kind of be used to start the method that battery and power are saved in a WLAN, 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, which (can utilize the integration bit in HT-SIG fields) and recognize this as, a kind of integrates packet and will not be right It is read out or enters row decoding to it.
67. a kind of WLAN frame formats, it includes a bit and continued with indicating that MAC NAV duration and PHY deceive Whether the time matches.
68. a kind of WLAN frame formats, it includes traffic direction information in PHY headers.
69. a kind of purpose saved in embodiment 68 using traffic direction information for power is (if for example, business AP is directed towards, then power can be ceased listening for and save by decoding all STA of such traffic direction information).
70. it 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 such traffic direction information STA can cease listening for and save power).
71. a kind of WLAN frame formats, it includes indication field to show that it should be at a distance carried out more than the frame in STA Read.
72. a kind of WLAN frame formats, it include indication field to STA show its can the where of the frame in or what When cease listening for.
73. a kind of WLAN frame formats, it includes information needs and is read, decodes and explain or require STA in frame in Many monitoring directions monitored at a distance indicate (LDI) field.
74. a kind of WLAN frame formats, its HT-SIG field for including a field (for example, bit) to indicate an extension is deposited Or in the HT-SIG fields extra OFDM symbol presence so that the field or symbol can include certain work( Rate saves information.
75. a kind of 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 Save information.
76. a kind of WLAN frame formats, its include in many poll frames of MRAD (for example, MMP) for GPI, GTI or A GPTI field.
77. a kind of MRAD frame formats, it includes the field for GPI, GTI or GPTI.
78. a kind of 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, it is passed through Modify with the field including saving information for GPI, GTI, GPTI or any other power.
80. any WLAN frame formats encoded including timing information, 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 information (for example, offset information), when described encoded Sequence information includes " basic duration " and one " fragment " or " basic duration " and " polynary (multiple) ".
" 82. basic duration " is defined as " deceiving the duration " or exported from " deceiving the duration ".
" 83. basic duration " is defined as " NAV duration " or exported from " NAV duration ".
84. any be used to STA assignment group, AP assignment group or some other STA assignment group believe Number send to the STA or be communicated to the WLAN frame formats of the STA.
85. any be used to STA assignment group, AP assignment group or some other STA assignment group believe Number send to the STA or be communicated to the management of the STA, action, control or data frame.
86. any be used to STA assignment group, AP assignment group or some other STA assignment group believe 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. any be used to STA assignment group, AP assignment group or some other STA assignment group believe Number send to the STA or be communicated to the WLAN frame formats of the STA.
88. any manage, act, controlling or data frame, it is used to send renewal, confirmation to AP or answer from STA That answers the STA assigns group, AP assignment group or some other STA assignment group.
89. any IAC/RAC, RTS/CTS, reverse traffic, CF- polls, QoS polls or BA/BAR frame formats, its by STA use with sent to AP update, confirm or response described in STA assign group, AP assignment group or some are other STA assignment group.
90. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
STA sends a signaling message using management, action, control or data frame, to indicate that its battery is low to AP Power and the possible power level of its battery or duration.
91. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
STA sends a signaling message using management, action, control or data frame, to indicate that it had better not be adopted to AP With all or certain specific integration or bursting scheme part to save its power.
92. a kind of be used to start the method that battery and power are saved in a WLAN, it comprises the following steps：
STA sends a signaling message using management, action, control or data frame, to indicate that it wants request work(to AP The assignment again of rate group is to save more power.
93. a kind of be used to start the method that battery and power are saved in a WLAN, 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 STA ability and preference, so as to participate in all or some integrated schemes.
94. a kind of STA consult, association, set up or any other stage using management, action, control or data frame Send the STA of a signaling message, to indicate STA ability (for example, STA can indicate its can not receive integration frame or Certain types of integration frame).
95. whether negotiable its of a kind of STA, the STA is supported to multiple destinations or the extremely integration of single destination The reception of frame.
96. a kind of later time that STA, the STA can be before associations, just after association, after association will be by Whether will be integrated for the data with AP negotiations STA or any time of which kind of type integrated scheme should be used, via Management, action, control or data frame send feature, capabilities list or the list of preferences of its support.
97. any embodiment in preceding embodiment, wherein the embodiment is to be used for MRMRA, MMRA, MRAD or MMP Context in.
98. using the reservation bit in intrinsic SIGNAL fields using indicate this as a kind of extrinsic frame format (for example, 820.11n frames) any WLAN frame formats.
99. using the reservation bit in intrinsic SIGNAL fields with any WLAN frames for the power saving for starting intrinsic device Form.
100. using the reservation bit in intrinsic SIGNAL fields to indicate this as a kind of any WLAN frames lattice for integrating frame Formula.
101. any embodiment in preceding embodiment, wherein, such as in mesh network environment, if using AP, with WLAN STA replace the AP, so that other STA can be used as AP.
102. any embodiment in preceding embodiment, it is used for WLAN ad-hoc networks, WLAN mesh networks or nothing Line Wide Area Network (for example, 802.16).
103. any embodiment in preceding embodiment, it is used for other wireless lan technologys and standard.
104. any embodiment in preceding embodiment, 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 (24)

1. a kind of access point (AP), including：
Receiver, is configured to from least one platform (STA) receive information；
Processor, is configured to that STA is dispatched into group based on the information received；And
Emitter, is configured to transmit the management frame of the instruction including assigned group to the STA；
Wherein, the receiver is further configured to receive the response associated with the group assigned from the STA；
And wherein described emitter be further configured to transmission include the data frame of packet and group identifier, the group Identifier is used to cause the STA to can determine whether the packet is intended for assigned group.
2. AP according to claim 1, wherein the receiver is further configured to receive multiple STA each STA's Business use information and the processor are further configured to assign in multiple groups at least based on the business use information One group.
3. AP according to claim 1, wherein the receiver is further configured to receive multiple STA each STA's Power level information and the processor are further configured to assign in multiple groups at least based on the power level information One group.
4. AP according to claim 1, wherein the processor is further configured to the STA being dispatched to more than one group Group.
5. AP according to claim 1, wherein the receiver is further configured to receive each group in multiple groups The quality of service requirement and wherein described processor of group are further configured to the STA based on the quality of service requirement received It is dispatched to the group.
6. AP according to claim 1, wherein the processor is further configured to be based on load balance requirement by the STA It is dispatched to the group.
7. one kind is used for the method used in access point (AP), this method includes：
From at least one platform (STA) receive information；
STA is dispatched to at least one group in multiple groups based on the information received；
The management frame of the instruction at least one group for including being assigned is transmitted to the STA；
The response associated with least one group assigned is received from the STA；And
Data frame is transmitted, wherein the data frame packet includes packet and group identifier, and wherein described group identifier So that the STA can determine whether the packet is intended at least one that assigned associated with the STA Group.
8. method according to claim 7, wherein the information received includes business use information.
9. method according to claim 7, wherein the information received includes power level information.
10. method according to claim 7, wherein the STA is assigned to more than one group.
11. method according to claim 7, wherein the information received includes quality of service requirement.
12. method according to claim 7, wherein at least one described group assigned is based on load balance requirement.
13. a kind of platform (STA), including：
Emitter, is configured to transmit information to access point (AP)；
Receiver, is configured to receive the management frame of the instruction including assigned group from the AP；
Wherein described emitter is further configured to transmit the response associated with the group assigned to the AP；
Wherein described receiver, which is further configured to receive, includes the data frame of packet and group identifier；And
Processor, is configured to determine whether the group identifier received in the data frame corresponds to assigned group Group, and wherein described processor are further configured to not correspond to institute in the group identifier received in the data frame Cause the STA ingoing powers save mode in the case of the group of assignment.
14. STA according to claim 13, wherein the emitter is further configured to use letter to AP transmission business Breath.
15. STA according to claim 13, wherein the emitter is further configured to believe to the AP delivering power levels Breath.
16. STA according to claim 13, wherein the instruction of the group assigned indicates that the STA is assigned to More than one group.
17. STA according to claim 13, wherein the emitter is further configured to want to AP transmission service quality Ask.
18. STA according to claim 13, wherein the group assigned is based on load balance requirement.
19. one kind is used for the method used in platform (STA), this method includes：
Information is transmitted to access point (AP)；
The management frame of the instruction including assigned group is received from the AP；
The response associated with the group assigned is transmitted to the AP；
Reception includes the data frame of packet and group identifier；
It is determined that whether the group identifier received in the data frame corresponds to assigned group；And
The ingoing power in the case where the group identifier received in the data frame does not correspond to assigned group Save mode.
20. method according to claim 19, wherein the information transmitted is business use information.
21. method according to claim 19, wherein the information transmitted is power level information.
22. method according to claim 19, wherein the instruction of the group assigned indicates that the STA is assigned to More than one group.
23. method according to claim 19, wherein the information transmitted is quality of service requirement.
24. method according to claim 19, wherein the group assigned is based on load balance requirement.
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