CN104540197A - Power save method, access point equipment and terminal station equipment - Google Patents

Power save method, access point equipment and terminal station equipment Download PDF

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Publication number
CN104540197A
CN104540197A CN201510003884.0A CN201510003884A CN104540197A CN 104540197 A CN104540197 A CN 104540197A CN 201510003884 A CN201510003884 A CN 201510003884A CN 104540197 A CN104540197 A CN 104540197A
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China
Prior art keywords
txop
power
frame
equipment
sta
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Granted
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CN201510003884.0A
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Chinese (zh)
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CN104540197B (en
Inventor
朱胡飞
李云波
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201510003884.0A priority Critical patent/CN104540197B/en
Publication of CN104540197A publication Critical patent/CN104540197A/en
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Publication of CN104540197B publication Critical patent/CN104540197B/en
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Classifications

    • 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
    • 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
    • H04W52/0222—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave in packet switched networks
    • 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
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • 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
    • 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
    • H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
    • 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
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/46—TPC being performed in particular situations in multi hop networks, e.g. wireless relay networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention provides a power save method, access point (AP) equipment and terminal station (STA) equipment. A TXOP power save indication of each frame is set through the AP equipment according to the judgment whether it is allowed to perform power save at the current TXOP and the judgment whether a newly added terminal STA exists in an operation object mark of each follow-up frame at the current TXOP, and when the TXOP power save indication of the current frame allows power save, the STA equipment determines whether to enter a sleeping state or not according to a judgment result about the sleeping condition; or when the current frame comprises a follow-up STA indication and the TXOP power save indication, the TXOP power save indication of the current frame is set to allow power save, no indication for STA equipment is included in the operation object mark of a preset frame, and the follow-up STA indication of the current frame means that no newly added follow-up STA exists, the STA equipment enters the sleeping state. By the adoption of the method and equipment, the application range of power save can be enlarged, and the power save effect can be improved.

Description

Power saving method, access point apparatus and end-station device
The divisional application of the application's to be application number be application for a patent for invention of 201110046716.1, the applying date of original application is on February 25th, 2011, the priority date of original application is on February 1st, 2011, and the invention and created name of original application is " power saving method, access point apparatus and end-station device ".
Technical field
The embodiment of the present invention relates to wireless communication technology, particularly relates to power saving method, access point (Access Point is called for short AP) equipment and point of termination station (Station is called for short STA) equipment.
Background technology
For multiple-input, multiple-output (Multiple-Input Multiple-Output, be called for short MIMO) wireless communication system, at a transmission opportunity (Transmit Opportunity, be called for short TXOP) in, be not that all STA equipment in a basic service sets (Basic Service Set, be called for short BSS) all need to receive data.Therefore, adopt power saving method in a wireless communication system, allow does not have the STA equipment of data receiver to enter sleep state in current TXOP.Be in the receiver that dormant STA equipment closes self, thus reduce power consumption.
At present, the power saving method of wireless communication system is: AP equipment is to STA equipment transmit operation object identity and forbid that TXOP power saves instruction (No TXOP Power Save indicates, and is called for short NoTXOP PS instruction).This operated object mark is used to indicate the one or more STA equipment needing to carry out operating.This forbids that TXOP power saves instruction can for being or no, wherein, is designated as no, then represents and allow the STA equipment in this BSS to carry out power save operation at current TXOP if forbid that TXOP power is saved; If forbidding that TXOP power saves to be designated as is then represent and forbid that the STA equipment in this BSS carries out power save operation at current TXOP.This forbids that the valid interval that TXOP power is saved indicated by instruction is current TXOP, and therefore, if STA equipment enters sleep state, then this STA equipment is by maintenance sleep state until this TXOP terminates, and at the end of this TXOP, STA equipment returns to waking state.In the power saving method of current communication standard, the No TXOP PS of all frames of same TXOP is set to identical value, and STA equipment only judges according to the NoTXOP PS of first frame of a TXOP.Be specially: in a TXOP, after STA equipment receives the first frame, judge whether allow to carry out power saving in this TXOP according to the No TXOP PS of the first frame.If do not allowed, then STA equipment all keeps waking state in whole TXOP.If allowed, then STA equipment is at first frame of this TXOP in all frames of last frame, all judges whether to enter sleep state according to sleep condition.
Adopt existing power saving method, when first frame of TXOP carry forbid TXOP power save be designated as no time, show that all STA equipment be not included in the operated object mark of this frame in this BSS all can enter sleep state, in the case, all STA equipment entering sleep state function that have usually in this BSS all enter sleep state.Therefore, for multiuser MIMO (Multi-UserMIMO is called for short MU-MIMO) pattern.Adopt existing power saving method, the operated object mark be only applicable in first frame of TXOP includes the situation of all STA equipment that this TXOP relates to, and for Single User MIMO (Single-User MIMO, be called for short SU-MIMO) pattern, the operated object mark that the method is only applicable to each frame of TXOP all indicates the situation of same STA equipment, therefore only can carry out power saving under less situation, range of application is little, the poor effect of therefore power saving.
Summary of the invention
The embodiment of the present invention provides power saving method, AP equipment and STA equipment, in order to solve defect of the prior art, expands the range of application that power is saved, strengthens power savings.
The embodiment of the present invention provides a kind of power saving method, comprising:
Whether according to allowing to carry out with or without newly-increased point of termination station STA in the operated object mark of the subsequent frame of each frame of power saving and current TXOP at current transmission chance TXOP, the TXOP power arranging each frame respectively saves instruction;
Send the one or more frame of current TXOP to STA equipment, to make described STA equipment when the TXOP power saving of present frame is designated as the saving of permission power, determine whether to enter sleep state according to the judged result of sleep condition.
The embodiment of the present invention provides a kind of power saving method, comprising:
Obtain the present frame of current TXOP, described present frame comprises AP equipment according to whether allowing the TXOP power arranged with or without newly-increased STA in the operated object mark of carrying out power saving and subsequent frame at current TXOP to save instruction;
When the TXOP power saving of described present frame is designated as the saving of permission power, STA equipment determines whether to enter sleep state according to the judged result of sleep condition.
The embodiment of the present invention also provides a kind of AP equipment, comprising:
Whether arrange module, allow to carry out with or without newly-increased point of termination station STA in the operated object mark of the subsequent frame of each frame of power saving and current TXOP at current transmission chance TXOP for basis, the TXOP power arranging each frame respectively saves instruction;
Sending module, for sending the one or more frame of current TXOP to STA equipment, to make described STA equipment when the TXOP power saving of present frame is designated as the saving of permission power, determines whether to enter sleep state according to the judged result of sleep condition.
The embodiment of the present invention also provides a kind of STA equipment, comprising:
Acquisition module, for obtaining the present frame of current transmission chance TXOP, described present frame comprises access point AP equipment according to whether allowing the TXOP power arranged with or without newly-increased STA in the operated object mark of carrying out power saving and subsequent frame at current TXOP to save instruction;
Control module, when being designated as the saving of permission power for saving when the TXOP power of described present frame, controlling described STA equipment and determining whether to enter sleep state according to the judged result of sleep condition.
The embodiment of the present invention also provides a kind of power saving method, comprising:
Point of termination station STA equipment obtains the present frame of current transmission chance TXOP and default frame respectively, and described present frame comprises subsequent terminal STA and indicates and TXOP power saving instruction, and described default frame comprises operated object mark;
When the TXOP power saving of described present frame is designated as permission, and the instruction do not comprised in the operated object mark of described default frame this STA equipment, and the follow-up STA of described present frame is designated as follow-up nothing when increasing STA newly, and described STA equipment enters sleep state.
The embodiment of the present invention also provides a kind of STA equipment, comprising:
Acquisition module, for obtaining the present frame of current transmission chance TXOP and default frame respectively, described present frame comprises follow-up STA and indicates and TXOP power saving instruction, and described default frame comprises operated object mark;
Control module, permission is designated as saving when the TXOP power of described present frame, and the instruction do not comprised in the operated object mark of described default frame this STA equipment, and the follow-up STA of described present frame is designated as follow-up nothing when increasing STA newly, controls described STA equipment and enters sleep state.
As shown from the above technical solution, the TXOP power of embodiment of the present invention different frame in same TXOP saves instruction can be different, only have when without newly-increased STA and allow current TXOP carry out power save these two conditions all meet time, the TXOP power of the subsequent frame of this frame or this frame is saved instruction and is just designated as the saving of permission power, STA is when the TXOP power saving of present frame is designated as the saving of permission power, just sleep condition is judged, determine whether to enter sleep state according to judged result.Or, send follow-up STA by AP equipment to STA equipment to indicate, when TXOP power save be designated as permission and follow-up STA be designated as follow-up nothing increase STA newly and preset frame operated object mark in do not comprise the mark of this STA equipment time, this STA equipment enters sleep state.Therefore, all STA equipment that the method does not require the operated object mark in first frame of TXOP to comprise this TXOP to relate to, thus expand the range of application of power saving method, enhance power savings.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the power saving method of the embodiment of the present invention one;
Fig. 2 is the flow chart of the power saving method of the embodiment of the present invention two;
Fig. 3 is the flow chart of the power saving method of the embodiment of the present invention three;
Fig. 4 is the flow chart of the power saving method of the embodiment of the present invention four;
Fig. 5 is the structural representation of the AP equipment of the embodiment of the present invention five;
Fig. 6 is the structural representation of the STA equipment of the embodiment of the present invention six;
Fig. 7 is the flow chart of the power saving method of the embodiment of the present invention seven;
Fig. 8 is the flow chart of the power saving method of the embodiment of the present invention eight;
Fig. 9 is the flow chart of the power saving method of the embodiment of the present invention nine;
Figure 10 is the flow chart of the power saving method of the embodiment of the present invention ten;
Figure 11 is the structural representation of the STA equipment of the embodiment of the present invention 11.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
When No TXOP PS instruction allows to carry out power saving, one or more combination in three conditions can be comprised for judging whether to enter dormant sleep condition, when wherein a condition meets, be namely judged as meeting sleep condition, STA equipment enters sleep state; When one or more conditions that sleep condition comprises all do not meet, be judged as not meeting sleep condition, STA equipment keeps waking state.Particularly, under MU-MIMO pattern, these three conditions specifically comprise following content.Condition one: when not comprising the instruction to this STA equipment in the operated object mark of default frame, STA equipment enters sleep state.Condition two: when the operated object mark of default frame comprises the instruction to this STA equipment, and when spatial reuse fluxion corresponding to this STA is designated as 0, STA equipment enters sleep state.Condition three: when the operated object mark of default frame comprises the instruction to this STA equipment, and this STA receives more data bit when being designated as the Frame of 0, and STA equipment enters sleep state.Under SU-MIMO pattern, these three conditions specifically comprise following content.Condition one: when the partial association mark (association identifier is called for short AID) indicated in the operated object mark of default frame is different from the part AID of this STA equipment, STA equipment enters sleep state.Condition two: the part AID indicated in the operated object mark of default frame is identical with the part AID of this STA equipment, but present frame is not that when issuing this STA, STA equipment enters sleep state.Condition three: when the operated object mark of default frame comprises the instruction to this STA equipment, and this STA receives more data bit when being designated as the Frame of 0, and STA equipment enters sleep state.
Adopt existing power saving method, the No TXOP PS of each frame in same TXOP is identical.For MU-MIMO pattern, when the No TXOP PS of the first frame is designated as the saving of permission power, if relate to the STA equipment that the first frame does not comprise in the operated object mark of the subsequent frame of this TXOP, because this STA equipment enters sleep state after receiving the first frame, then cannot respond the instruction of subsequent frame.And for SU-MIMO pattern, when the No TXOP PS of the first frame is designated as the saving of permission power, if the STA equipment of the subsequent frame instruction of TXOP is different from the STA equipment that the first frame indicates, because the STA equipment of subsequent frame instruction enters sleep state after receiving the first frame, then cannot respond the instruction of subsequent frame.
For above-mentioned defect, the embodiment of the present invention proposes a kind of power saving method, in same TXOP, different No TXOP PS can be set for different frames, particularly, whether AP allows to carry out with or without newly-increased STA in power saving and the subsequent frame at this TXOP at current TXOP according to the communication system at place, and arrange the No TXOP PS of each frame, STA judges whether to enter sleep state according to this No TXOP PS.Specifically see following examples one to embodiment six.
Fig. 1 is the flow chart of the power saving method of the embodiment of the present invention one.In the embodiment of the present invention one, for the operating process of AP equipment, this power saving method is described.As shown in Figure 1, the method comprises following process.
Whether step 101:AP equipment is according to allowing to carry out with or without newly-increased STA in the operated object mark of the subsequent frame of each frame of power saving and current TXOP at current TXOP, and the TXOP power arranging each frame respectively saves instruction.
Step 102:AP equipment sends the one or more frame of current TXOP to STA equipment, to make STA equipment when the TXOP power saving of present frame is designated as the saving of permission power, determines whether to enter sleep state according to the judged result of sleep condition.
In this step, each frame comprises: the operated object mark of this frame and the TXOP power of this frame save instruction.
On the basis of technique scheme, further the concrete grammar of step 101 is introduced.In same TXOP, whether the TXOP power of each frame saves instruction is according to allowing to carry out arranging respectively with or without newly-increased STA in the operated object mark of the subsequent frame of each frame of power saving and current TXOP at current TXOP by AP.Wherein, AP specifically can adopt two kinds of methods to judge with or without newly-increased STA in the operated object mark of the subsequent frame of each frame of current TXOP.First method is: judge whether to include in the operated object mark before present frame and present frame the STA equipment needing to carry out data transmission in all frames after the present frame in current TXOP, if, represent and can not new STA equipment be indicated in each frame that present frame is follow-up, then meet follow-up nothing and increase STA condition newly, otherwise, do not meet follow-up nothing and increase STA condition newly.Second method is: judge whether to include in the operated object mark of present frame the STA equipment needing to carry out data transmission in all frames after the present frame in current TXOP, if, represent and can not new STA equipment be indicated in each frame that present frame is follow-up, then meet follow-up nothing and increase STA condition newly, otherwise, do not meet follow-up nothing and increase STA condition newly.Any one method above-mentioned is adopted to judge follow-up with or without newly-increased STA, the method to set up that TXOP power saves instruction is: when follow-up nothing increases STA newly and allows to carry out power saving at current TXOP, the TXOP power of the present frame of current TXOP can be saved instruction and be set to allow power to save; Or, also the TXOP power of the present frame of current TXOP can be saved instruction and be set to forbid that power is saved, and the TXOP power of arbitrary frame later for present frame saving instruction is set to allow power to save.When follow-up have a newly-increased STA time, the TXOP power of present frame must be saved instruction to be set to forbid that power is saved, namely no matter whether allow to carry out power saving at current TXOP, have newly-increased STA as long as follow-up, just the TXOP power of present frame must be saved instruction and be set to forbid that power is saved; Further, when not allowing to carry out power saving at current TXOP, no matter follow-up with or without newly-increased STA, all the TXOP power of present frame must be saved instruction and be set to forbid that power is saved.
In the embodiment of the present invention one, AP equipment saves instruction to the TXOP power of different frame in same TXOP can take different settings, a part of frame then likely in a TXOP is set to allow power to save, STA equipment may enter sleep state at this frame, and another part frame is set to forbid that power is saved in same TXOP, STA equipment must keep waking state at this frame.Only have when without newly-increased STA and allow to carry out power save these two conditions all meet time, the TXOP power of the subsequent frame of this frame or this frame is just saved instruction and is set to allow power to save by AP equipment, saves the judgement that instruction determines whether to carry out sleep condition to make STA equipment according to this TXOP power.Instruction is saved owing to arranging different TXOP power for different frame, if do not comprise all STA equipment that this TXOP relates in the operated object mark of the first frame, the TXOP power of the first frame can be saved instruction and is set to forbid that power is saved by AP equipment, until when having included all STA equipment that this TXOP relates to the operated object mark of multiple frames from the first frame to present frame, just the TXOP power of this present frame is saved instruction to be set to allow power to save, therefore the method all STA equipment that this TXOP relates to of situation do not comprise to(for) the operated object mark in first frame of TXOP is still applicable, thus expand the range of application of power saving.And, operated object mark in first frame of TXOP is not comprised to the situation of all STA equipment that this TXOP relates to, existing power saving method cannot carry out power saving from start to finish in this TXOP, and adopt the power saving method of the embodiment of the present invention one, the TXOP power of the first frame is saved instruction and is set to forbid that power is saved by AP, after receiving the first frame, each STA equipment can not enter sleep state, until receive TXOP power to save the frame being designated as and allowing power to save, each STA equipment judges whether to enter sleep state according to sleep condition, thus enhance power savings.
Fig. 2 is the flow chart of the power saving method of the embodiment of the present invention two.In the embodiment of the present invention two, for the operating process of STA equipment, this power saving method is described.As shown in Figure 2, the method comprises following process.
Step 201:STA equipment obtains the present frame of current TXOP, and wherein, present frame comprises AP equipment according to whether allowing the TXOP power arranged with or without newly-increased STA in the operated object mark of carrying out power saving and subsequent frame at current TXOP to save instruction.
In this step, whether the TXOP power of each frame that STA equipment gets saves instruction is according to allowing to carry out arranging respectively with or without the STA increased newly in the operated object mark of the subsequent frame of each frame of power saving and current TXOP at current TXOP by AP.Wherein, AP specifically can adopt two kinds of methods to judge with or without newly-increased STA in the operated object mark of the subsequent frame of each frame of current TXOP.First method is: judge whether to include in the operated object mark before present frame and present frame the STA equipment needing to carry out data transmission in all frames after the present frame in current TXOP, if, represent and can not new STA equipment be indicated in each frame that present frame is follow-up, then meet follow-up nothing and increase STA condition newly, otherwise, do not meet follow-up nothing and increase STA condition newly.Second method is: judge whether to include in the operated object mark of present frame the STA equipment needing to carry out data transmission in all frames after the present frame in current TXOP, if, represent and can not new STA equipment be indicated in each frame that present frame is follow-up, then meet follow-up nothing and increase STA condition newly, otherwise, do not meet follow-up nothing and increase STA condition newly.Any one method above-mentioned is adopted to judge follow-up with or without newly-increased STA, the method to set up that TXOP power saves instruction is: when follow-up nothing increases STA newly and allows to carry out power saving at current TXOP, the TXOP power of the present frame of current TXOP can be saved instruction and be set to allow power to save; Or, also the TXOP power of the present frame of current TXOP can be saved instruction and be set to forbid that power is saved, and the TXOP power of arbitrary frame later for present frame saving instruction is set to allow power to save.When follow-up have a newly-increased STA time, the TXOP power of present frame must be saved instruction to be set to forbid that power is saved, namely no matter whether allow to carry out power saving at current TXOP, have newly-increased STA as long as follow-up, just the TXOP power of present frame must be saved instruction and be set to forbid that power is saved; Further, when not allowing to carry out power saving at current TXOP, no matter follow-up with or without newly-increased STA, all the TXOP power of present frame must be saved instruction and be set to forbid that power is saved.
Step 202: when the TXOP power saving of present frame is designated as the saving of permission power, STA equipment determines whether to enter sleep state according to the judged result of sleep condition.
On the basis of technique scheme, further, when present frame TXOP power save be designated as forbid that power is saved time, STA equipment using next frame as present frame, return execution step 201.
In the embodiment of the present invention two, in same TXOP, the TXOP power saving instruction of different frame can be different, only have when without newly-increased STA and allow to carry out power save these two conditions all meet time, the TXOP power of the subsequent frame of this frame or this frame is saved instruction and is just designated as the saving of permission power, STA is when the TXOP power saving of present frame is designated as the saving of permission power, just sleep condition is judged, determine whether to enter sleep state according to judged result.Instruction is saved owing to arranging different TXOP power for different frame, if do not comprise all STA equipment that this TXOP relates in the operated object mark of the first frame, the TXOP power of the first frame can be saved instruction to be set to forbid that power is saved, until when having included all STA equipment that this TXOP relates to the operated object mark of multiple frames from the first frame to present frame, the TXOP power of this present frame is saved instruction to be set to allow power to save, therefore the method all STA equipment that this TXOP relates to of situation do not comprise to(for) the operated object mark in first frame of TXOP is still applicable, thus expand the range of application of power saving.And, operated object mark in first frame of TXOP is not comprised to the situation of all STA equipment that this TXOP relates to, existing power saving method cannot carry out power saving from start to finish in this TXOP, and adopt the power saving method of the embodiment of the present invention two, the TXOP power of the first frame is saved to be designated as and is forbidden that power is saved, after receiving the first frame, each STA equipment can not enter sleep state, until receive TXOP power to save the frame being designated as and allowing power to save, each STA equipment judges whether to enter sleep state according to sleep condition, thus enhance power savings.
Fig. 3 is the flow chart of the power saving method of the embodiment of the present invention three.In the embodiment of the present invention three, for the operating process of AP equipment in conjunction with STA equipment, this power saving method is described.In the embodiment of the present invention three, TXOP power is saved instruction and is designated as example to forbid that TXOP power is saved, further, with in current TXOP without newly-increased STA equipment and allow current TXOP carry out power save time, AP can arrange this at present frame and forbid that TXOP power saves that to be designated as no be example.In the embodiment of the present invention three, sleep condition comprises the first sleep condition.As shown in Figure 3, the method comprises following process.
Step 301:AP equipment sends the one or more frame of current TXOP to STA equipment.Wherein, each frame comprises: the operated object mark of this frame and this frame forbid that TXOP power saves instruction, each frame forbid that TXOP power is saved instruction and arranged respectively with or without newly-increased STA according in the operated object mark of the subsequent frame of each frame of current TXOP by AP.
In this step, a TXOP comprises one or more frames, and what AP equipment issued present frame to STA equipment in each frame forbids that TXOP power saves instruction, and issues the mark of the STA equipment corresponding to operation of present frame instruction.By above-mentioned, AP forbids that TXOP power is saved instruction and operated object mark and is carried in the targeting sequencing of each frame and sends to STA equipment.Particularly, can at the signaling A1 of the superelevation throughput pattern of the targeting sequencing of each frame (Very high throughput signal A1, be called for short VHT-SIG-A1) in field, adopting 1 bit as forbidding that TXOP power saves instruction, adopting more than 1 bit instruction operated object mark.Such as, for operated object mark, in VHT-SIG-A1 field 1 or more than 1 bit can be adopted to indicate the operated object mark that this frame is corresponding.For forbidding that TXOP power saves instruction, the B22 bit of VHT-SIG-A1 field can being adopted as forbidding that TXOP power saves instruction, this bit being called No TXOP PS bit.If No TXOP PS bit is 0, represents and forbid that TXOP power saving is designated as no, allow the STA of this BSS to carry out power save operation, namely allow STA to switch between waking state and sleep state.If No TXOP PS bit is 1, represent that forbidding that TXOP power saving is designated as is that forbid that the STA of this BSS carries out power save operation, namely STA must keep waking state.
When arranging the No TXOP PS bit of each frame, AP not only saves arrange according to whether allowing to carry out power at current TXOP, also needs to arrange with or without newly-increased STA in the subsequent frame according to present frame in this TXOP.Particularly, if subsequent frame is without newly-increased STA, and allow to carry out power saving at current TXOP, then AP equipment can arrange the No TXOP PS bit of present frame is 0, allow STA to carry out power saving, the No TXOP PS bit that also can arrange present frame is 1, forbids that STA carries out power saving.If subsequent frame is without newly-increased STA, and does not allow to carry out power saving at current TXOP, then AP arranges the No TXOP PS bit of present frame is 1, does not allow STA to carry out power saving.If subsequent frame has newly-increased STA, then AP arranges the No TXOP PS bit of present frame is 1, does not allow STA to carry out power saving at current TXOP.Wherein, AP equipment specifically can adopt the two kinds of methods recorded in the embodiment of the present invention one and the embodiment of the present invention two, judges with or without newly-increased STA in the operated object mark of the subsequent frame of each frame of current TXOP.In the embodiment of the present invention three, only to adopt second method to be explained.Particularly, if all frames after the present frame in TXOP and present frame, AP equipment all only gives same STA equipment transmission data, or AP equipment transmits data all only to several users in same MU-MIMO group, then AP equipment judges that follow-up nothing increases STA newly, therefore whether can enter sleep state with No TXOP PS bit instruction STA, namely, No TXOPPS=0 can be set, No TXOP PS=1 also can be set.Otherwise, AP equipment must be set to 1 No TXOP PS bit, namely STA equipment is indicated to enter sleep state, that is, if in the frame in TXOP after present frame, AP equipment needs the STA equipment transmission data beyond to several STA equipment indicated by the operated object mark of present frame, then AP equipment must indicate STA equipment to enter sleep state.Wherein, in frame in TXOP after present frame, AP equipment comprises to the concrete condition of the STA equipment transmission data beyond several STA equipment indicated by the operated object mark of present frame: under SU-MIMO pattern, and AP equipment is to the STA equipment transmission data beyond STA equipment indicated by the operated object mark of present frame; Under MU-MIMO pattern, AP is to the STA equipment transmission data beyond the set of the multiple STA equipment compositions indicated by the operated object mark of present frame.
Under MU-MIMO pattern, this operated object mark is group mark (Group Identity is called for short Group ID).Before this power saving method of execution, by signaling Group ID defined in advance and arrange in STA equipment.Particularly, the MU-MIMO group of more than 1 or 1 is comprised under MU-MIMO pattern, wherein each MU-MIMO group comprises the STA equipment of more than 1, is generally 4 STA equipment, is identified respectively the MU-MIMO group of above-mentioned more than 1 or 1 by Group ID.Before this power saving method of execution, AP equipment issues each STA equipment by relevant signaling the above-mentioned definition to Group ID, after each STA equipment receives above-mentioned definition, store part relevant to oneself in above-mentioned definition, thus when performing this power saving method, AP equipment is to STA equipment transmit operation object identity, i.e. Group ID, after STA equipment receives Group ID, the definition of the Group ID that can store according to self, know the MU-MIMO group oneself whether belonging to this Group ID and indicate, if STA equipment belongs to the MU-MIMO group that this Group ID indicates, then illustrate that this operated object mark comprises the instruction to this STA equipment, if STA equipment does not belong to the MU-MIMO group that this Group ID indicates, the instruction do not comprised this STA equipment is then described in this operated object mark.Under SU-MIMO pattern, this operated object mark is the partial association mark (associationidentifier is called for short AID) of 1 STA that this frame is corresponding, or, this operated object mark is a part of the AID of 1 STA that this frame is corresponding, also referred to as partial AID.A kind of embodiment is that, under SU-MIMO pattern, AID is made up of 12 bits, and this operated object mark is low 9 in 12 bits of AID.If this AID or partial AID is identical with AID or the partial AID of this STA equipment, then illustrate that this operated object mark comprises the instruction to this STA equipment, if this AID or partial AID is different from AID or the partial AID of this STA equipment, then the instruction do not comprised this STA equipment is described in this operated object mark.
Step 302:STA equipment obtains the present frame of current TXOP, and wherein, present frame comprises the operated object mark of forbidding TXOP power saving instruction and this frame of this frame.
In this step, in this step, STA equipment obtain from the targeting sequencing of the frame from AP equipment present frame forbid TXOP power save instruction and operated object mark.
Step 303:STA equipment judge present frame to forbid that TXOP power saves to be designated as be or no if NO, perform step 304; If YES, STA equipment keeps waking state, and STA equipment, using next frame as new present frame, returns and performs step 302.
In this step, STA equipment judges above-mentionedly to forbid that TXOP power saves 1 bit of instruction as being or no for representing, if this bit is no, illustrate and meet two conditions simultaneously, that is: allow to carry out TXOP power saving and follow-up nothing increases STA newly, then can carry out power saving, continue to perform following step 304; If this bit is yes, illustrate that one of them condition does not meet, or two conditions all do not meet, then STA equipment keeps waking state.
Step 304: at the present frame of current TXOP in each frame of last frame, STA equipment judges whether satisfied first sleep condition, and if so, STA equipment enters sleep state; If not, STA equipment keeps waking state.
In this step, the first sleep condition need not be modified to the sleep condition in existing communication agreement, thus is more convenient to carry out upgrading to existing communication equipment.
Particularly, under MU-MIMO pattern, the first sleep condition can comprise one or more the combination in following three conditions, and when wherein a condition meets, be namely judged as satisfied first sleep condition, STA equipment enters sleep state; When one or more conditions that the first sleep condition comprises all do not meet, be judged as not meeting the first sleep condition, STA equipment keeps waking state.These three conditions specifically can comprise following content.Condition one: when not comprising the instruction to this STA equipment in the operated object mark of present frame, STA equipment enters sleep state.Condition two: when the operated object mark of present frame comprises the instruction to this STA equipment, and when spatial reuse fluxion corresponding to this STA is designated as 0, STA equipment enters sleep state.Condition three: when the operated object mark of present frame comprises the instruction to this STA equipment, and this STA receives more data bit when being designated as the Frame of 0, and STA equipment enters sleep state.
In this step, under SU-MIMO pattern, the first sleep condition can comprise one or more the combination in following three conditions, and when wherein a condition meets, be namely judged as satisfied first sleep condition, STA equipment enters sleep state; When one or more conditions that the first sleep condition comprises all do not meet, be judged as not meeting the first sleep condition, STA equipment keeps waking state.These three conditions specifically can comprise following content.Condition one: when the part AID indicated in the operated object mark of present frame is different from the part AID of this STA equipment, STA equipment enters sleep state.Condition two: the part AID indicated in the operated object mark of present frame is identical with the part AID of this STA equipment, but present frame is not that when issuing this STA, STA equipment enters sleep state.Particularly, STA equipment can adopt various ways to judge, and whether present frame issues this STA equipment, wherein a kind of embodiment is, STA equipment judges whether the MAC mark of present frame meets the MAC mark of this STA equipment, if, present frame issues this STA equipment, and if not, present frame does not issue this STA equipment.Condition three: when the operated object mark of present frame comprises the instruction to this STA equipment, and this STA receives more data bit when being designated as the Frame of 0, and STA equipment enters sleep state.
When performing step 304, at the present frame of current TXOP in each frame of last frame, a kind of judgement flow process of preferably execution mode is as follows.
The first step: STA equipment judges the instruction whether comprised in the operated object mark of present frame this STA equipment, if so, performs second step; If not, STA equipment enters sleep state.
Second step: under MU-MIMO pattern, judge the spatial reuse fluxion that this STA is corresponding indicates whether to be 0, or whether this STA receives the Frame that more data bit is designated as 0, and if so, STA equipment enters sleep state; If not, STA equipment keeps waking state.Under SU-MIMO pattern, judge whether present frame issues this STA equipment, or, judge whether this STA receives the Frame that more data bit is designated as 0, if present frame is not issue this STA equipment or this STA equipment receives the Frame that more data bit is designated as 0, then STA equipment enters sleep state, if present frame issues this STA equipment and this STA equipment receives the Frame that more data bit is designated as 1, then STA equipment keeps waking state.
In the embodiment of the present invention three, in same TXOP, the No TXOP PS of different frame can be different, only have when allow to carry out power saving and in subsequent frame at this TXOP without newly-increased STA time, the No TXOP PS of this frame just can be designated as and allow power to save, STA, according to the instruction of the No TXOP PS of present frame, determines whether the judgement carrying out the first sleep condition.Owing to arranging different No TXOP PS for different frame, if do not comprise all STA equipment that this TXOP relates in the operated object mark of the first frame, the No TXOP PS of the first frame can be set to forbid that power is saved.Assuming that adopt the aforementioned first method determining whether newly-increased STA, then until when having included all STA equipment that this TXOP relates to the operated object mark of multiple frames from the first frame to present frame, just the No TXOP PS of this present frame can be set to allow power to save; Assuming that adopt the aforementioned second method determining whether newly-increased STA, then until when having included all STA equipment that all frames that in this TXOP, present frame is later relate in the operated object mark of present frame, just the No TXOP PS of this present frame can be set to allow power to save.Therefore the method all STA equipment that this TXOP relates to of situation do not comprise to(for) the operated object mark in first frame of TXOP is still applicable, thus expands the range of application that power saves.And, operated object mark in first frame of TXOP is not comprised to the situation of all STA equipment that this TXOP relates to, existing power saving method cannot carry out power saving from start to finish in this TXOP, and adopt the power saving method of the embodiment of the present invention three, the No TXOP PS of the first frame is for forbidding that power is saved, after receiving the first frame, this STA equipment can not enter sleep state, until receiving No TXOP PS is the frame allowing power to save, this STA equipment judges whether to enter sleep state according to the first sleep condition, thus enhance power savings.
Fig. 4 is the flow chart of the power saving method of the embodiment of the present invention four.In the embodiment of the present invention four, for the operating process of AP equipment in conjunction with STA equipment, this power saving method is described.In the embodiment of the present invention four, sleep condition comprises: the first sleep condition and the second sleep condition.At technical scheme technical that the embodiment of the present invention three is recorded, when the No TXOP PS of present frame is for forbidding that power is saved, increase STA equipment judges the second sleep condition and records the step of judged result; When the No TXOP PS of present frame is for allowing power to save, increases and determining whether to enter dormant step according to the judged result of record.As shown in Figure 4, the method comprises following process.
Step 401:AP equipment sends the one or more frame of current TXOP to STA equipment.Wherein, each frame comprises: the operated object mark of this frame and this frame forbid that TXOP power saves instruction, each frame forbid that TXOP power is saved instruction and arranged respectively with or without newly-increased STA according in the operated object mark of the subsequent frame of each frame of current TXOP by AP.
This step is identical with the step 301 in the embodiment of the present invention three, does not repeat them here.
Step 402:STA equipment obtains the present frame of current TXOP, and wherein, present frame comprises the operated object mark of forbidding TXOP power saving instruction and this frame of this frame.
This step is identical with the step 302 in the embodiment of the present invention three, does not repeat them here.
Step 403:STA equipment judge present frame to forbid that TXOP power saves to be designated as be or no if NO, perform step 404; If YES, step 406 is performed.
Step 404:STA equipment judges that the judged result recorded is as meeting or not meeting, if be satisfied, STA equipment enters sleep state; If for not meet, perform step 405.
Step 405: at the present frame of current TXOP in each frame of last frame, STA equipment judges whether satisfied first sleep condition, and if so, STA equipment enters sleep state; If not, STA equipment keeps waking state.
This step is identical with the step 304 in the embodiment of the present invention three, does not repeat them here.
Step 406:STA equipment keeps waking state, judges whether satisfied second sleep condition and records judged result, using next frame as new present frame, returns and performs step 402.
In this step, particularly, under MU-MIMO pattern, the second sleep condition can comprise one or both the combination in following two conditions.When wherein a condition meets, be namely judged as satisfied second sleep condition, STA equipment record judged result is: meet.When two kinds of conditions that the second sleep condition comprises all do not meet, be judged as not meeting the second sleep condition, STA equipment record judged result is: do not meet.These two conditions specifically can comprise following content.Condition one: the operated object mark of present frame comprises the instruction to this STA equipment, and spatial reuse fluxion corresponding to this STA is designated as 0.Condition two: when the operated object mark of present frame comprises the instruction to this STA equipment, and this STA receives the Frame that more data bit is designated as 0.
In this step, under SU-MIMO pattern, the second sleep condition can comprise one or both the combination in following two conditions.When wherein a condition meets, be namely judged as satisfied second sleep condition, STA equipment record judged result is: meet.When two kinds of conditions that the second sleep condition comprises all do not meet, be judged as not meeting the second sleep condition, STA equipment record judged result is: do not meet.These two conditions specifically can comprise following content.Condition one: the part AID indicated in the operated object mark of present frame is identical with the part AID of this STA equipment, but present frame does not issue this STA equipment.Particularly, STA equipment can adopt various ways to judge, and whether present frame issues this STA equipment, wherein a kind of embodiment is, STA equipment judges whether the MAC mark of present frame meets the MAC mark of this STA equipment, if, present frame issues this STA equipment, and if not, present frame does not issue this STA equipment.Condition two: when the operated object mark of present frame comprises the instruction to this STA equipment, and this STA equipment receives the Frame that more data bit is designated as 0.
In the embodiment of the present invention four, in same TXOP, the No TXOP PS of different frame can be different, only have when allow to carry out power saving and in subsequent frame at this TXOP without newly-increased STA time, the No TXOP PS of this frame is just designated as the saving of permission power.STA is according to the instruction of the No TXOP PS of present frame, and when the No TXOP PS of present frame is for forbidding that power is saved, STA equipment first judges the second sleep condition and records judged result, and then judges the No TXOP PS of next frame; In subsequent process, when STA equipment receive No TXOP PS be allow power save frame time, first determine whether to enter sleep state according to the judged result of the second sleep condition of record, when this judged result is not for meeting, again to multiple frames of last frame, the first sleep condition judgement is carried out to present frame, thus determine whether to enter sleep state.The situation that the method does not comprise for the operated object mark in first frame of TXOP all STA equipment that this TXOP relates to is still applicable, not only expands the range of application that power is saved, and enhances power savings.And, by prejudging the second sleep condition when No TXOP PS is for forbidding that power is saved and records result, when this result is for meeting the second sleep condition, once receiving NoTXOP PS is the frame allowing power to save, STA equipment can enter sleep state immediately, and need not judge the first sleep condition again, thus STA equipment can enter sleep state as early as possible, also save and enter the dormant judgement time, thus enhance the effect of power saving.Especially, such STA equipment may be there is, it is satisfied second sleep condition of at least one frame in each frame forbidding that power is saved at No TXOP PS, and be that each frame allowing power to save does not meet the second sleep condition at No TXOP PS, if so adopt the technical scheme that other embodiment is recorded, this STA equipment can not enter sleep state, and adopt the technical scheme that the embodiment of the present invention four is recorded, this STA equipment can enter sleep state, thus further enhancing the effect of power saving.
Further, in the invention described above embodiment three and the embodiment of the present invention four, forbidding that TXOP power saves instruction is only a kind of embodiment that TXOP power saves instruction, those skilled in the art are appreciated that according to prior art, also can adopt and allow TXOP power to save instruction expression TXOP power saving instruction, save when allowing TXOP power and be designated as when being, represent and allow power to save in current TXOP; Saving when allowing TXOP power when being designated as no, representing and forbidding that power is saved in current TXOP.
Further, in the invention described above embodiment one to embodiment of the present invention four, AP to TXOP power save instruction arrange time, can also further to TXOP power save instruction the change frequency of value and/or the version of value limit.
Due in same TXOP, whether AP equipment is according to allowing to carry out in power saving and the subsequent frame at this TXOP with or without newly-increased STA at current TXOP, save instruction to the TXOP power of each frame to arrange, then the value of TXOP power saving instruction likely occurs repeatedly to change, such as, in the first frame, allow to carry out power saving and follow-uply have newly-increased STA, then the TXOP power of the first frame is saved to be designated as and is forbidden that power is saved, for No TXOP PS=1; In the second frame, allow to carry out power saving and follow-up nothing increases STA newly, then the TXOP power of the second frame is saved to be designated as and is allowed power to save, for No TXOPPS=0; In the 3rd frame, do not allow to carry out power saving and follow-up nothing increases STA newly, then the TXOP power of the 3rd frame is saved to be designated as and is forbidden that power is saved, for No TXOP PS=1, by that analogy.On the basis of technique scheme, in order to reduce the complexity of the processing procedure of AP equipment and STA equipment, when saving instruction to TXOP power and arranging, can be set in advance in TXOP power in a TXOP and save the change frequency of the value indicated, AP equipment can also arrange the TXOP power saving instruction of each frame further respectively according to the change frequency of the value of the TXOP power saving instruction preset.Such as, the change frequency presetting the value of TXOP power saving instruction is 2 times or 3 times, and one preferably execution mode is, the change frequency presetting the value of TXOP power saving instruction is 1 time, that is, in same TXOP, TXOP power is only allowed to save instruction change 1 time.Then in the above-described example, although according to whether allowing to carry out in power saving and the subsequent frame at this TXOP with or without newly-increased STA at current TXOP, 3rd frame should be set to No TXOP PS=1, but the change frequency saving the value of instruction due to default TXOP power is 1 time, in the second frame, TXOP power is saved instruction and be there occurs change relative to the first frame, therefore in the 3rd frame, No TXOP PS is not changed, and still adopt the No TXOP PS=0 identical with the second frame.
On the basis of technique scheme, can also be set in advance in TXOP power in a TXOP and save the version of the value of instruction, the TXOP power that AP equipment arranges each frame respectively according to the version of the value of the TXOP power saving instruction preset saves instruction.Such as, the version being set in advance in the value of TXOP power saving instruction in a TXOP is: allow power saving to indicate from forbidding that power saving instruction is changed to.Therefore, in same TXOP, only allowing TXOP power to save instruction allows power to save instruction from forbidding that power saving instruction is changed to, namely, if the TXOP power of the former frame of present frame saves to be designated as forbid that power is saved, the TXOP power allowing to arrange present frame is saved to be designated as and is allowed power to save, and if the TXOP power of the former frame of present frame is saved to be designated as and is allowed power to save, then do not allow the TXOP power that present frame is set to save to be designated as and forbid that power is saved.For No TXOP PS, its value is only allowed to be changed to 0 from 1, when whether basis allows to carry out judging with or without newly-increased STA in the operated object mark of the subsequent frame of each frame of power saving and current TXOP at current TXOP, should from permission power save instruction be changed to forbid power save instruction time, AP equipment is not changed the setting that TXOP power saves instruction, namely still keeps it to be allow power to save instruction.
Further, on the basis of technique scheme, can also the present frame in process be expanded.Particularly, in above-mentioned steps 302 and step 402, STA equipment is except obtaining the present frame of current TXOP, and can also obtain the more than one frame of the first frame to present frame of current TXOP, this more than one frame comprises each frame operated object mark separately.When in step 304 the first sleep condition being judged, and when in a step 406 the second sleep condition being judged, by the operated object mark of with good grounds present frame carry out the condition that judges, expand to and judge according to the operated object mark of above-mentioned more than one frame.
Fig. 5 is the structural representation of the AP equipment of the embodiment of the present invention five.As shown in Figure 5.This AP equipment at least comprises: arrange module 51 and sending module 52.The specific works flow process of the AP equipment of the embodiment of the present invention five can see the technical scheme of the invention described above embodiment one to embodiment of the present invention four record.
Wherein, whether arrange module 51 and allow to carry out with or without newly-increased STA in the operated object mark of the subsequent frame of each frame of power saving and current TXOP at current TXOP for basis, the TXOP power arranging each frame respectively if saving instruction;
Sending module 52, for sending the one or more frame of current TXOP to STA equipment, to make STA equipment when the TXOP power saving of present frame is designated as the saving of permission power, determines whether to enter sleep state according to the judged result of sleep condition.
On the basis of technique scheme, module 51 is set specifically for carrying out power saving when permission at current TXOP, and time in the operated object mark of the subsequent frame of the present frame of current TXOP without newly-increased STA, the TXOP power saving arranging present frame is designated as and allows power save or forbid that power is saved; When not allowing to carry out power saving at current TXOP, the TXOP power saving arranging present frame is designated as forbids that power is saved; When having newly-increased STA in the operated object mark of the subsequent frame of the present frame of current TXOP, the TXOP power saving arranging present frame is designated as forbids that power is saved.
On the basis of technique scheme, module 51 is set specifically for carrying out power saving when permission at current TXOP, and time in the operated object mark of the subsequent frame of the present frame of current TXOP without newly-increased STA, after arranging present frame, the TXOP power of a frame of predeterminated position is saved to be designated as and is allowed power save or forbid that power is saved; When not allowing to carry out power saving at current TXOP, the TXOP power saving arranging present frame is designated as forbids that power is saved; When having newly-increased STA in the operated object mark of the subsequent frame of the present frame of current TXOP, the TXOP power saving arranging present frame is designated as forbids that power is saved.
On the basis of technique scheme, when module 51 is set specifically for needing the STA equipment of carrying out data transmission in all frames after the present frame that the operated object mark before present frame and present frame comprises in current TXOP, determine in the operated object mark of the subsequent frame of the present frame of current TXOP without newly-increased STA.Or, when module 51 is set specifically for needing the STA equipment of carrying out data transmission in all frames after the present frame comprised in current TXOP in the operated object mark of present frame, determine in the operated object mark of the subsequent frame of the present frame of current TXOP without newly-increased STA.
On the basis of technique scheme, the TXOP power saving instruction that the change frequency of module 51 also for saving the value of instruction according to TXOP power in the TXOP preset arranges each frame is respectively set.And/or, the TXOP power saving instruction that the version of module 51 also for saving the value of instruction according to TXOP power in the TXOP preset arranges each frame is respectively set.
On the basis of technique scheme, arranging module 51 specifically for saving the change frequency of the value of instruction according to TXOP power in the TXOP preset is 1 time, and the TXOP power arranging each frame respectively saves instruction.And/or, arranging module 51 specifically for saving the version of value of instruction according to TXOP power in the TXOP preset is that the TXOP power of the former frame of present frame is saved to be designated as and forbidden that power is saved, the TXOP power of present frame is saved to be designated as and allowed power to save, and the TXOP power arranging each frame respectively saves instruction.
In the embodiment of the present invention five, only have when without newly-increased STA and allow to carry out power save these two conditions all meet time, the TXOP power of the subsequent frame of this frame or this frame is just saved instruction and is set to allow power to save by the module that arranges of AP equipment, saves the judgement that instruction determines whether to carry out sleep condition to make STA equipment according to this TXOP power.Therefore the situation not comprising for the operated object mark in first frame of TXOP all STA equipment that this TXOP relates to still can carry out power saving, thus expands the range of application that power saves, and enhances power savings.
Fig. 6 is the structural representation of the STA equipment of the embodiment of the present invention six.As shown in Figure 6.This STA equipment at least comprises: acquisition module 61 and control module 62.The specific works flow process of the STA equipment of the embodiment of the present invention six can see the technical scheme of the invention described above embodiment one to embodiment of the present invention four record.
Wherein, acquisition module 61 is for obtaining the present frame of current TXOP, and present frame comprises AP equipment according to whether allowing the TXOP power arranged with or without newly-increased STA in the operated object mark of carrying out power saving and subsequent frame at current TXOP to save instruction;
When control module 62 being designated as the saving of permission power for saving when the TXOP power of present frame, controlling STA equipment and determining whether to enter sleep state according to the judged result of sleep condition.
On the basis of technique scheme, control module 62 also for when present frame TXOP power save be designated as forbid that power is saved time, control STA equipment and keep waking state, control acquisition module 61 obtains current TXOP present frame using next frame as present frame.
On the basis of technique scheme, when control module 62 is designated as the saving of permission power specifically for saving when the TXOP power of present frame, at the present frame of current TXOP in each frame of last frame, judge whether satisfied first sleep condition, if so, control STA equipment and enter sleep state; If not, control STA equipment and keep waking state.Wherein, first sleep condition comprises: do not comprise the instruction to this STA equipment in the operated object mark of present frame, or, the operated object mark of present frame comprises the instruction of this STA equipment and spatial reuse fluxion corresponding to this STA is designated as 0, or the operated object mark of present frame comprises the instruction of this STA equipment and this STA receives the Frame that more data bit is designated as 0.Or, first sleep condition comprises: the part AID indicated in the operated object mark of present frame is different from the part AID of this STA equipment, or, the part AID indicated in the operated object mark of present frame is identical with the part AID of this STA equipment and present frame is not issue this STA, or the operated object mark of present frame comprises the instruction of this STA equipment and this STA receives the Frame that more data bit is designated as 0.
On the basis of technique scheme, control module 62 also for when present frame TXOP power save be designated as forbid that power is saved time, judge whether satisfied second sleep condition and record judged result.Wherein, second sleep condition comprises: the operated object mark of present frame comprises the instruction of this STA equipment and spatial reuse fluxion corresponding to this STA is designated as 0, or the operated object mark of present frame comprises the instruction of this STA equipment and this STA receives the Frame that more data bit is designated as 0.Or, second sleep condition comprises: the part AID indicated in the operated object mark of present frame is identical with the part AID of this STA equipment and present frame does not issue this STA equipment, or the operated object mark of present frame comprises the instruction of this STA equipment and this STA equipment receives the Frame that more data bit is designated as 0.
On the basis of technique scheme, control module 62 is also for when the TXOP power saving of present frame is designated as the saving of permission power, judge that the judged result of the second sleep condition recorded is as meeting or not meeting, if be satisfied, control STA equipment and enter sleep state; If for not meet, judge whether satisfied first sleep condition.
In the embodiment of the present invention six, only have when without newly-increased STA and allow to carry out power save these two conditions all meet time, the frame of acquisition module acquisition of STA equipment or the TXOP power of the subsequent frame of this frame are saved instruction and are just designated as the saving of permission power, the control module of STA equipment is when the TXOP power saving of present frame is designated as the saving of permission power, just sleep condition is judged, determine whether to enter sleep state according to judged result., the situation that therefore the method does not comprise for the operated object mark in first frame of TXOP all STA equipment that this TXOP relates to still can carry out power saving, thus expands the range of application of power saving, enhances power savings.
In another aspect of this invention, for the defect that prior art exists, the embodiment of the present invention proposes a kind of power saving method, do not change the method to set up that the No TXOP PS of all frames in prior art in same TXOP is identical, on this basis, by indicating with or without newly-increased STA follow-up in the frame of TXOP, expand the range of application of power saving method.Specifically see following embodiment seven to embodiment 11.
Fig. 7 is the flow chart of the power saving method of the embodiment of the present invention seven.As shown in Figure 7, the method comprises following process.
Step 701:STA equipment obtains current transmission chance (Transmit Opportunity respectively, be called for short TXOP) present frame and default frame, this present frame comprises follow-up STA and indicates and TXOP power saving instruction, and this default frame comprises operated object mark.
Step 702: be designated as permission when the TXOP power of present frame is saved, and preset in the operated object mark of frame and do not comprise instruction to this STA equipment, and the follow-up STA of present frame is designated as follow-up nothing when increasing STA newly, and STA equipment enters sleep state.
On the basis of technique scheme, step 702 also comprises: when the TXOP power saving of present frame is designated as permission, and preset in the operated object mark of frame the instruction do not comprised this STA equipment, and the follow-up STA of present frame is designated as follow-up when having a newly-increased STA, and STA equipment keeps waking state.
In the embodiment of the present invention seven, these three conditions of scope that STA equipment comprises according to TXOP power saving instruction, follow-up STA instruction and operated object mark judge, when TXOP power save be designated as permission and follow-up STA be designated as follow-up nothing increase STA newly and preset frame operated object mark in do not comprise the mark of this STA equipment time, this STA equipment enters sleep state.Therefore, the situation that the method does not comprise for the operated object mark in first frame of TXOP all STA equipment that this TXOP relates to is still applicable, thus expands the range of application of power saving.And, operated object mark in first frame of TXOP is not comprised to the situation of all STA equipment that this TXOP relates to, existing power saving method cannot carry out power saving from start to finish in this TXOP, and adopt the power saving method of the embodiment of the present invention seven, after receiving the first frame, this STA equipment can not enter sleep state, until receive follow-up STA to be designated as the frame that follow-up nothing increases STA newly, this STA equipment starts to enter sleep state, thus enhances power savings.
Fig. 8 is the flow chart of the power saving method of the embodiment of the present invention eight.Particularly, in the embodiment of the present invention eight, this follow-up STA be designated as follow-up nothing increase newly STA instruction (being called that No More STA indicates), when follow-up nothing increase newly STA be designated as be time, represent that follow-up nothing increases STA newly; When follow-up nothing increase newly STA be designated as no time, representing follow-up has newly-increased STA.In the embodiment of the present invention eight, this TXOP power is saved to be designated as and is forbidden that TXOP power saves instruction, and namely No TXOP PS indicate, when forbid TXOP power saving be designated as be time, represent and forbid that power is saved in current TXOP; When forbid TXOP power save be designated as no time, represent and allow power to save in current TXOP.
Further, in the embodiment of the present invention eight, STA instruction increased newly for follow-up nothing and forbids that TXOP power saves instruction, adopting 1 bit to indicate respectively.As shown in Figure 8, the method comprises following process.
Step 801:AP equipment sends follow-up nothing at each frame of current TXOP to STA equipment and increases STA instruction newly, forbids that TXOP power saves instruction and operated object mark.
In this step, AP equipment issues follow-up nothing directly to STA equipment and increases STA newly and be designated as and be or no, and forbids that TXOP power saves to be designated as and be or no, and the mark of the STA equipment corresponding to operation of this frame instruction.A TXOP comprises one or more frames, and above-mentioned follow-up nothing is increased newly STA instruction, forbids that TXOP power saves instruction and operated object mark is carried in the targeting sequencing of each frame and sends to STA equipment by AP.Particularly, can at the signaling A1 of the superelevation throughput pattern of the targeting sequencing of each frame (Very high throughput signal A1, be called for short VHT-SIG-A1) in field, 1 bit is adopted to increase STA instruction newly as follow-up nothing, adopting 1 bit as forbidding that TXOP power saves instruction, adopting more than 1 bit instruction operated object mark.Such as, 1 of VHT-SIG-A1 field is adopted to retain (Reserved, be called for short RSVD) bit as follow-up nothing increase newly STA instruction, this bit is called NoMoreSTA bit, when NoMoreSTA bit is 1, representing that follow-up nothing increases that STA is designated as newly is indicate in the operated object mark of the frame of all STA equipment all before present frame and present frame related in current TXOP, can not indicate in each frame that present frame is follow-up to new STA equipment; When NoMoreSTA bit is 0, represent that follow-up nothing increases STA newly and is designated as no, indicate in the operated object mark of the frame of all STA equipment related in current TXOP not all before present frame and present frame, also can new STA equipment be indicated in each frame that present frame is follow-up.For forbidding that TXOP power saves instruction, the B22 bit of VHT-SIG-A1 field can be adopted as forbidding that TXOP power saves instruction, this bit is called No TXOP PS bit, when No TXOP PS bit is 0, represent and forbid that TXOP power saving is designated as no, allow the STA of this BSS to carry out power save operation, namely allow STA to switch between waking state and sleep state; When No TXOP PS bit is 1, represent that forbidding that TXOP power saving is designated as is forbid that the STA of this BSS carries out power save operation.For operated object mark, in VHT-SIG-A1 field 1 or more than 1 bit can be adopted to indicate the operated object mark that this frame is corresponding.
Under MU-MIMO pattern, this operated object mark is group mark (Group Identity is called for short Group ID).Before this power saving method of execution, by signaling Group ID defined in advance and arrange in STA equipment.Particularly, the MU-MIMO group of more than 1 or 1 is comprised under MU-MIMO pattern, wherein each MU-MIMO group comprises the STA equipment of more than 1, is generally 4 STA equipment, is identified respectively the MU-MIMO group of above-mentioned more than 1 or 1 by Group ID.Before this power saving method of execution, AP equipment issues each STA equipment by relevant signaling the above-mentioned definition to Group ID, after each STA equipment receives above-mentioned definition, store part relevant to oneself in above-mentioned definition, thus when performing this power saving method, AP equipment is to STA equipment transmit operation object identity, i.e. Group ID, after STA equipment receives Group ID, the definition of the Group ID that can store according to self, know the MU-MIMO group oneself whether belonging to this Group ID and indicate, if STA equipment belongs to the MU-MIMO group that this Group ID indicates, then illustrate that this operated object mark comprises the instruction to this STA equipment, if STA equipment does not belong to the MU-MIMO group that this Group ID indicates, the instruction do not comprised this STA equipment is then described in this operated object mark.Under SU-MIMO pattern, this operated object mark is the partial association mark (associatio nidentifier is called for short AID) of 1 STA that this frame is corresponding, or, this operated object mark is a part of the AID of 1 STA that this frame is corresponding, also referred to as partial AID.A kind of embodiment is that, under SU-MIMO pattern, AID is made up of 12 bits, and this operated object mark is low 9 in 12 bits of AID.If this AID or partial AID is identical with AID or the partial AID of this STA equipment, then illustrate that this operated object mark comprises the instruction to this STA equipment, if this AID or partial AID is different from AID or the partial AID of this STA equipment, then the instruction do not comprised this STA equipment is described in this operated object mark.
Step 802:STA equipment obtains the present frame of current TXOP and default frame respectively, and this present frame comprises follow-up nothing and increases STA instruction newly and forbid that TXOP power saves instruction, and this default frame comprises operated object mark.
In this step, the follow-up nothing that STA equipment obtains present frame from the targeting sequencing of the frame from AP equipment increase newly STA instruction, present frame forbid that TXOP power saves the operated object mark of instruction and default frame.Wherein, default frame can adopt two kinds of embodiments, and in a first embodiment, default frame is the present frame of current TXOP; In the second execution mode, default frame is that first frame of current TXOP is to one or more frames in present frame.
Step 803:STA equipment judge present frame to forbid that TXOP power saves to be designated as be or no that if YES, STA equipment keeps waking state; If NO, step 804 is performed.
In this step, if the TXOP power of forbidding of present frame saves that to be designated as be show that AP equipment forbids that STA equipment carries out power saving at current TXOP, therefore, STA equipment needs to keep waking state.If forbidding that TXOP power is saved and being designated as no of present frame, shows that AP equipment allows STA equipment to carry out power saving at current TXOP, then continues to perform following step 804.
Step 804:STA equipment judges whether satisfied first sleep condition, and if so, STA equipment enters sleep state; If not, STA equipment keeps waking state.
In this step, under MU-MIMO pattern, the first sleep condition can comprise one or more the combination in following three conditions, and when wherein a condition meets, be namely judged as satisfied first sleep condition, STA equipment enters sleep state; When one or more conditions that the first sleep condition comprises all do not meet, be judged as not meeting the first sleep condition, STA equipment keeps waking state.These three conditions specifically can comprise following content.Condition one: do not comprise the instruction to this STA equipment in the operated object mark of default frame, and the follow-up nothing of present frame increases STA newly is designated as when being, and STA equipment enters sleep state.Condition two: when the operated object mark of default frame comprises the instruction to this STA equipment, and when spatial reuse fluxion corresponding to this STA is designated as 0, STA equipment enters sleep state.Condition three: when the operated object mark of default frame comprises the instruction to this STA equipment, and this STA receives more data bit when being designated as the Frame of 0, and STA equipment enters sleep state.
In this step, under SU-MIMO pattern, the first sleep condition can comprise one or more the combination in following three conditions, and when wherein a condition meets, be namely judged as satisfied first sleep condition, STA equipment enters sleep state; When one or more conditions that the first sleep condition comprises all do not meet, be judged as not meeting the first sleep condition, STA equipment keeps waking state.These three conditions specifically can comprise following content.Condition one: the part AID indicated in the operated object mark of default frame is different from the part AID of this STA equipment, and the follow-up nothing of present frame increases STA newly is designated as when being, STA equipment enters sleep state.Condition two: the part AID indicated in the operated object mark of default frame is identical with the part AID of this STA equipment, and the follow-up nothing of present frame increases STA newly is designated as and is, but present frame is not that when issuing this STA, STA equipment enters sleep state.Particularly, STA equipment can adopt various ways to judge, and whether present frame issues this STA equipment, wherein a kind of embodiment is, STA equipment judges medium education (the Medium Access Control of present frame, be called for short MAC) identify the MAC mark whether meeting this STA equipment, if so, present frame issues this STA equipment, if not, present frame does not issue this STA equipment.Condition three: when the operated object mark of default frame comprises the instruction to this STA equipment, and this STA receives more data bit when being designated as the Frame of 0, and STA equipment enters sleep state.
When performing step 804, a kind of judgement flow process of preferably execution mode is as follows.
The first step: STA equipment judges the instruction whether comprised in the operated object mark of default frame this STA equipment, if so, performs second step; If not, the 3rd step is performed.In a first step, for above-mentioned two kinds of embodiments of default frame, if preset the present frame that frame is current TXOP, then in a first step, judge the instruction whether comprised in the operated object mark of present frame this STA equipment; If preset frame be first frame of current TXOP to present frame, then in a first step, judge the instruction whether comprised in the first frame to the operated object mark of multiple frames of present frame this STA equipment.
Second step: under MU-MIMO pattern, judges the spatial reuse fluxion that this STA is corresponding indicates whether to be 0, or, whether this STA receives the Frame that more data bit is designated as 0, and if so, STA equipment enters sleep state, if not, STA equipment keeps waking state.Under SU-MIMO pattern, judge whether present frame issues this STA equipment, or, judge whether this STA receives the Frame that more data bit is designated as 0, if present frame is not issue this STA equipment or this STA equipment receives the Frame that more data bit is designated as 0, then STA equipment enters sleep state, if present frame issues this STA equipment and this STA equipment receives the Frame that more data bit is designated as 1, then STA equipment keeps waking state.In second step, when the operated object mark of default frame comprises the instruction to this STA equipment, adopt the Equations of The Second Kind sleep condition in existing power saving method, judge whether STA equipment enters sleep state.Identical with existing power saving method to the concrete judgement of Equations of The Second Kind sleep condition, do not repeat them here.
3rd step: it is or no that if YES, STA equipment enters sleep state that STA equipment judges that the follow-up nothing of present frame increases that STA is designated as newly; If NO, STA equipment keeps waking state.In the third step, be designated as no if the follow-up nothing of present frame increases STA newly, show that subsequent frame still there will be newly-increased STA, therefore, the STA equipment in operated object mark is not included in yet till present frame, still likely be used in the operation of subsequent frame, therefore, STA equipment needs to keep waking state.If the follow-up nothing of present frame increases STA newly and is designated as and is, show that subsequent frame there will not be newly-increased STA, then can consider that order STA equipment be not included in yet in the operated object mark of default frame till present frame enters sleep state, close the receiver of this STA equipment, to save the power consumption of STA equipment.
In the embodiment of the present invention eight, send follow-up nothing at each frame of current TXOP to STA equipment by AP equipment to increase STA instruction newly, forbid that TXOP power saves instruction and operated object mark, STA equipment is obtained by the mode directly obtained from AP equipment forbids that TXOP power saves instruction, first according to forbidding that TXOP power is saved instruction and judged whether to allow to carry out power saving, when permitted, more successively increase STA instruction newly according to operated object mark and follow-up nothing to judge whether to enter sleep state.Therefore, all STA equipment that the method does not require the operated object mark in first frame of TXOP to comprise this TXOP to relate to, thus expand the range of application of power saving method, enhance power savings.
Fig. 9 is the flow chart of the power saving method of the embodiment of the present invention nine.In the embodiment of the present invention nine, still adopt this follow-up STA to be designated as follow-up nothing and increase STA instruction newly, this TXOP power is saved to be designated as and is forbidden that TXOP power saving is designated as example.
And, in the embodiment of the present invention nine, in order to saving signaling resource, do not re-use instruction and forbid that TXOP power saves 1 bit of instruction, and make communication parties arrange in advance this forbid TXOP power save be designated as no, namely acquiescence allows to carry out power saving in current TXOP, thus does not necessarily adopt bit to indicate, and saves the signaling consumption of 1 bit.Method can adopt the mode specified communication standard particularly, can provide against TXOP power saving in communication standard is designated as no, or do not relate in communication standard and forbid that TXOP power saves this indication information of instruction, be namely equivalent to this standard default and allow to carry out power saving in current TXOP.And STA instruction is increased newly for follow-up nothing, still adopt 1 bit to indicate.As shown in Figure 9, the method comprises following process.
Step 901:AP equipment sends follow-up nothing at each frame of current TXOP to STA equipment and increases STA instruction and operated object mark newly.
In this step, AP equipment to send follow-up nothing at each frame of current TXOP, and to increase STA instruction newly identical with the method that step 801 in the embodiment of the present invention eight is recorded with the concrete grammar of operated object mark to STA equipment, do not repeat them here.
Step 902:STA equipment obtains the present frame of current TXOP and default frame respectively, and this present frame comprises follow-up nothing and increases STA instruction newly and forbid that TXOP power saves instruction, and this default frame comprises operated object mark.
In this step, according to what preset, STA equipment forbids that TXOP power saves instruction, obtains this and forbids that TXOP power saving is designated as no.It is identical with the method that step 802 in the embodiment of the present invention eight is recorded with the concrete grammar of the operated object mark presetting frame that the follow-up nothing that STA equipment obtains the present frame of current TXOP increases STA instruction newly, do not repeat them here.
Due in the embodiment of the present invention nine, be equivalent to communication parties and arranged to forbid that TXOP power saving is designated as no, therefore STA equipment to forbidding that TXOP power is saved instruction and judged, directly need not can perform following step 903.
Step 903:STA equipment judges whether satisfied first sleep condition, and if so, STA equipment enters sleep state; If not, STA equipment keeps waking state.
The concrete grammar of this step is identical with the method that step 804 in the embodiment of the present invention eight is recorded, and does not repeat them here.
In the embodiment of the present invention nine, by the mode that communication protocol specifies, communication parties has arranged to forbid that TXOP power saving is designated as no in advance, namely give tacit consent to and all allow to carry out power saving in current TXOP, therefore, save signaling consumption, and STA equipment can be omitted judge forbidding that TXOP power is saved and being designated as and being or no step of present frame, thus further increase the judging efficiency of this power saving method, enhance power savings.
In the invention described above embodiment eight and the embodiment of the present invention nine, follow-up nothing increases STA instruction newly and forbids that TXOP power saves instruction is only a kind of embodiment that follow-up STA instruction and TXOP power save instruction respectively, those skilled in the art are appreciated that according to prior art, also can adopt follow-uply has newly-increased STA to indicate to represent follow-up STA instruction, when follow-up have newly-increased STA to be designated as to be time, representing follow-up has newly-increased STA; When follow-up have newly-increased STA to be designated as no time, represent that follow-up nothing increases STA newly.In like manner, also can adopt and allow TXOP power to save instruction to represent that TXOP power saves instruction, save when allowing TXOP power and be designated as when being, represent and allow power to save in current TXOP; Saving when allowing TXOP power when being designated as no, representing and forbidding that power is saved in current TXOP.
Figure 10 is the flow chart of the power saving method of the embodiment of the present invention ten.In the embodiment of the present invention ten, follow-up STA is designated as follow-up nothing and increases STA instruction newly, and this TXOP power is saved to be designated as and allowed TXOP power to save instruction.Further, in the embodiment of the present invention ten, adopt 1 bit that follow-up nothing is increased newly to STA instruction and allows TXOP power to save instruction and indicate simultaneously, thus save 1 bit, save signaling consumption.As shown in Figure 10, the method comprises following process.
Step 1001:AP equipment sends follow-up nothing at each frame of current TXOP to STA equipment and increases STA instruction newly, allows TXOP power to save instruction and operated object mark.
In this step, the method recorded to the concrete grammar of STA equipment transmit operation object identity and the step 801 of the embodiment of the present invention eight of AP equipment is identical.And STA instruction is increased newly for follow-up nothing and allows TXOP power to save instruction, AP equipment adopts same bit to send to STA equipment.Particularly, follow-up nothing increases STA newly and indicates and allow TXOP power saving instruction to comprise 1 bit altogether, and when follow-up nothing increases STA newly and allows to carry out power saving at current TXOP, this bit is yes, and logical accepted value 1 represents; At other in any case, this bit is no, and logical accepted value 0 represents, such as: when follow-up have a newly-increased STA time, whether no matter allow to carry out power saving at current TXOP, this bit is no; Or, when forbid current TXOP carry out power save time, no matter follow-up whether have newly-increased STA, and this bit is also no.
Step 1002:STA equipment obtains the present frame of current TXOP and default frame respectively, and this present frame comprises follow-up nothing and increases STA instruction newly and allow TXOP power to save instruction, and this default frame comprises operated object mark.
The permission TXOP power that step 1003:STA equipment judges whether to meet present frame saves to be designated as; If not, STA equipment keeps waking state.
In this step, STA equipment judges above-mentioned for indicating follow-up nothing to increase STA instruction newly and allow TXOP power to save 1 bit of instruction as being or no simultaneously, if this bit is yes, illustrating that the permission TXOP power simultaneously meeting present frame saves to be designated as is and follow-up nothing increases STA newly is designated as and is, then can carry out power saving, continue to perform following step 1004; If this bit is no, illustrate that one of them condition does not meet, or two conditions all do not meet, then STA equipment keeps waking state.
Step 1004:STA equipment judges whether satisfied second sleep condition, and if so, STA equipment enters sleep state; If not, STA equipment keeps waking state.
In this step, the second sleep condition can comprise two class sleep condition of the prior art, namely need not modify to the sleep condition in existing communication agreement, thus is more convenient to carry out upgrading to existing communication equipment.
Particularly, under MU-MIMO pattern, the second sleep condition can comprise one or more the combination in following three conditions, and when wherein a condition meets, be namely judged as satisfied second sleep condition, STA equipment enters sleep state; When one or more conditions that the second sleep condition comprises all do not meet, be judged as not meeting the second sleep condition, STA equipment keeps waking state.These three conditions specifically can comprise following content.Condition one: when not comprising the instruction to this STA equipment in the operated object mark of default frame, STA equipment enters sleep state.Condition two: when the operated object mark of default frame comprises the instruction to this STA equipment, and when spatial reuse fluxion corresponding to this STA is designated as 0, STA equipment enters sleep state.Condition three: when the operated object mark of default frame comprises the instruction to this STA equipment, and this STA receives more data bit when being designated as the Frame of 0, and STA equipment enters sleep state.
In this step, under SU-MIMO pattern, the second sleep condition can comprise one or more the combination in following three conditions, and when wherein a condition meets, be namely judged as satisfied second sleep condition, STA equipment enters sleep state; When one or more conditions that the second sleep condition comprises all do not meet, be judged as not meeting the second sleep condition, STA equipment keeps waking state.These three conditions specifically can comprise following content.Condition one: when the part AID indicated in the operated object mark of default frame is different from the part AID of this STA equipment, STA equipment enters sleep state.Condition two: the part AID indicated in the operated object mark of default frame is identical with the part AID of this STA equipment, but present frame is not that when issuing this STA, STA equipment enters sleep state.Particularly, STA equipment can adopt various ways to judge, and whether present frame issues this STA equipment, wherein a kind of embodiment is, STA equipment judges whether the MAC mark of present frame meets the MAC mark of this STA equipment, if, present frame issues this STA equipment, and if not, present frame does not issue this STA equipment.Condition three: when the operated object mark of default frame comprises the instruction to this STA equipment, and this STA receives more data bit when being designated as the Frame of 0, and STA equipment enters sleep state.
When performing step 1004, a kind of judgement flow process of preferably execution mode is as follows.
The first step: STA equipment judges the instruction whether comprised in the operated object mark of default frame this STA equipment, if so, performs second step; If not, STA equipment enters sleep state.
Second step: under MU-MIMO pattern, judge the spatial reuse fluxion that this STA is corresponding indicates whether to be 0, or whether this STA receives the Frame that more data bit is designated as 0, and if so, STA equipment enters sleep state; If not, STA equipment keeps waking state.Under SU-MIMO pattern, judge whether present frame issues this STA equipment, or, judge whether this STA receives the Frame that more data bit is designated as 0, if present frame is not issue this STA equipment or this STA equipment receives the Frame that more data bit is designated as 0, then STA equipment enters sleep state, if present frame issues this STA equipment and this STA equipment receives the Frame that more data bit is designated as 1, then STA equipment keeps waking state.
In the embodiment of the present invention ten, adopt 1 bit that follow-up nothing is increased newly to STA instruction and allows TXOP power to save instruction and indicate simultaneously, thus save the signaling consumption of 1 bit further.
On the basis of the technical scheme of the invention described above embodiment seven to embodiment of the present invention ten record, further, this power saving method is further comprising the steps of: STA equipment arranges involved mark.This involved mark is for representing whether the mark of this STA equipment is included in the operated object mark of default frame, and being initially set to of this involved mark is no.Particularly, STA equipment can adopt 1 bit as involved mark, during initial setting up, this bit value is 0, as long as comprise the mark of this STA equipment in the operated object mark of a frame, the bit value corresponding by the involved mark of this STA equipment is set to 1, and still keeps this bit value to be 1 after continuing frame upon receipt.In above-mentioned three embodiments, the step arranging involved mark for STA equipment can perform respectively before above-mentioned steps 701, step 801, step 901 and step 1002 or with it simultaneously.After STA equipment gets the operated object mark of default frame, STA equipment judges that current involved being designated is or no, if YES, keeps involved being designated to be; If NO, judge the mark whether comprising this STA equipment in the operated object mark of present frame, if so, arranging involved being designated is, otherwise, keep involved be designated no.In step 702, step 804, step 903 and step 1004, when whether comprising the mark of this STA equipment in the operated object mark judging default frame, concrete method is: judge that this involved being designated is or no, if this involved being designated is, show that the mark of this STA equipment has been included in the operated object mark of default frame, be designated no if this is involved, show that the mark of this STA equipment is not included in the operated object mark of default frame.Adopt the mode of involved mark of arranging, make to judge that the step whether comprising the mark of this STA equipment in the operated object mark of default frame is simple and easy to do, improve judgement treatment effeciency.
On the basis of the technical scheme of the invention described above embodiment seven to embodiment of the present invention ten record, further, this power saving method also comprises: STA equipment obtains the Duration Information of current TXOP.In above-mentioned three embodiments, the step that STA equipment obtains the Duration Information of current TXOP can perform respectively before above-mentioned steps 701, step 801, step 901 and step 1002 or with it simultaneously.In step 702, step 804, step 903 and step 1004, STA equipment is after entering sleep state, and at the end of the duration of current TXOP, this STA equipment enters waking state.Thus ensure that STA equipment is all in waking state, the corresponding indication information that the frame successfully receiving next TXOP carries when next TXOP arrives.
Figure 11 is the structural representation of the STA equipment of the embodiment of the present invention 11.Equipment in the present embodiment can be the STA in mimo wireless communication.Method when access point AP equipment sends data or information to STA equipment in application said method embodiment.In actual applications, the Correspondent Node in MIMO can AP and STA each other, so may respectively as AP or STA at the next equipment of different signal intelligences.As shown in figure 11, this STA equipment 110 at least comprises: acquisition module 111 and control module 112.Further, identification module 113 can also be comprised.
Wherein, acquisition module 111 is for obtaining the present frame of current TXOP and default frame respectively, this present frame comprises follow-up STA and indicates and TXOP power saving instruction, this default frame comprises operated object mark, and the follow-up STA instruction of the present frame of above-mentioned current TXOP, the TXOP power saving instruction of present frame and the operated object mark of default frame are sent to control module 112 by acquisition module 111;
Control module 112 controls STA equipment for the follow-up STA instruction according to the present frame from the current TXOP of acquisition module 111, the TXOP power saving instruction of present frame and the operated object mark of default frame, when the TXOP power saving of present frame is designated as permission, and preset in the operated object mark of frame the instruction do not comprised this STA equipment, and the follow-up STA of present frame is designated as follow-up nothing when increasing STA newly, controls STA equipment and enter sleep state.
On the basis of technique scheme, further, control module 112 is also designated as permission for saving when the TXOP power of present frame, and preset in the operated object mark of frame the instruction do not comprised this STA equipment, and the follow-up STA of present frame is designated as follow-up when having a newly-increased STA, controls STA equipment and keeps waking state.
On the basis of technique scheme, particularly, acquisition module 111 specifically can adopt in following three kinds of modes any one, to indicate and TXOP power is saved and indicated to obtain follow-up STA.In first kind of way, acquisition module 111 is for obtaining 1 bit information representing follow-up STA instruction and 1 bit information representing TXOP power saving instruction.Or in the second way, acquisition module 111 representing 1 bit information of follow-up STA instruction specifically for obtaining, and according to communication standard, obtaining TXOP power saving and being designated as permission.Or, in the third mode, specifically for obtaining, acquisition module 111 represents that follow-up STA instruction and TXOP power save 1 bit information of instruction, when follow-up STA be designated as follow-up nothing increase STA newly and TXOP power save be designated as permission time, this bit is yes, when follow-up STA be designated as follow-up have newly-increased STA or TXOP power to save to be designated as forbid time, this bit is no.
On the basis of technique scheme, particularly, acquisition module 111 specifically can adopt in following three kinds of modes any one, to obtain operated object mark.In first kind of way, acquisition module 111 is specifically for obtaining the operated object mark of the present frame of current TXOP.Or in the second way, acquisition module 111 is specifically for the operated object mark of the first frame to one or more frames in present frame that obtain current TXOP.
On the basis of technique scheme, this STA equipment can also comprise identification module 113.Identification module 113 is for storing and upgrading the involved mark of STA equipment.Particularly, acquisition module 111 obtains the operated object mark of the default frame of current TXOP and sends to identification module 113, and identification module 113, for judging that current involved being designated is or no, if YES, keeps involved being designated to be; If NO, judge the mark whether comprising this STA equipment in the operated object mark of present frame, if so, arranging involved being designated is, otherwise, keep involved be designated no.Correspondingly, control module 112 is specifically for judging that involved being designated stored in identification module 113 is or no, if YES, judge that the operated object mark of default frame comprises the instruction to this STA equipment, if NO, the instruction do not comprised in the operated object mark of default frame this STA equipment is judged.
On the basis of technique scheme, further, acquisition module 111 is also for obtaining the Duration Information of current TXOP and sending to control module 112.Correspondingly, control module 112 is also for controlling this STA equipment according to the Duration Information from the current TXOP of acquisition module 111, and particularly, control module 112, at the end of the duration of current TXOP, controls this STA equipment and enters waking state.
Wherein, the specific works mode of the above-mentioned modules of the STA equipment of the embodiment of the present invention 11 all can adopt the power saving method recorded in the embodiment of the present invention seven to the embodiment of the present invention ten to carry out, technical scheme not detailed in the embodiment of the present invention 11, can implement with reference to recording in the embodiment of the present invention seven to the embodiment of the present invention ten.
In the embodiment of the present invention 11, STA equipment obtains follow-up STA and indicates, when TXOP power save be designated as permission and follow-up STA be designated as follow-up nothing increase STA newly and preset frame operated object mark in do not comprise the mark of this STA equipment time, control this STA equipment and enter sleep state.Therefore, adopt this power saving method, all STA equipment not requiring the operated object mark in first frame of TXOP to comprise this TXOP to relate to, thus expand the range of application of power saving method, enhance power savings.
It should be noted that: for aforesaid each embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not by the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and involved action and module might not be that the present invention is necessary.
In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (44)

1. a power saving method, is characterized in that, comprising:
If all frames after the present frame in transmission opportunity TXOP and present frame, access point AP equipment all only gives same point of termination station STA equipment transmission data, or described AP equipment all only gives several STA equipment transmission data in same multi-user's multiple-input, multiple-output MU-MIMO group, then the TXOP power of present frame saving instruction is set to allow power to save by described AP equipment;
Or, if in the frame in TXOP after present frame, described AP equipment is to the STA equipment transmission data beyond several STA equipment indicated by the operated object mark of present frame, then the TXOP power of present frame saving instruction is set to forbid that power is saved by described AP equipment;
Described AP equipment sends the one or more frame of current TXOP to STA equipment, and to make when the TXOP power saving of present frame is designated as the saving of permission power, described STA equipment determines whether to enter sleep state according to the judged result of sleep condition.
2. method according to claim 1, it is characterized in that, in described frame in TXOP after present frame, described AP equipment is to the STA equipment transmission data beyond several STA equipment indicated by the operated object mark of present frame, comprise: under single user multiple-input, multiple-output SU-MIMO pattern, described AP equipment is to the STA equipment transmission data beyond STA equipment indicated by the operated object mark of present frame; Under MU-MIMO pattern, described AP is to the STA equipment transmission data beyond the set of the multiple STA equipment compositions indicated by the operated object mark of present frame.
3. method according to claim 1, is characterized in that, in the one or more frame of the current TXOP sent to STA equipment at described AP equipment, each frame comprises: this frame forbid that TXOP power saves instruction; Wherein, in same TXOP, the value only allowing TXOP power to save instruction changes 1 time.
4. method according to claim 3, is characterized in that, in same TXOP, only allows TXOP power to save instruction and allows power to save instruction from forbidding that power saving instruction is changed to.
5. method according to claim 1, is characterized in that, in the one or more frame of the current TXOP sent to STA equipment at described AP equipment, each frame comprises: this frame forbid that TXOP power saves instruction; Wherein, in same TXOP, if the TXOP power of the former frame of present frame saves to be designated as forbid that power is saved, then allow the TXOP power that present frame is set to save and be designated as the saving of permission power, allow power to save if the TXOP power of the former frame of present frame saves to be designated as, then do not allow the TXOP power saving that present frame is set to be designated as and forbid that power is saved.
6. method according to claim 1, is characterized in that, also comprises: if described STA equipment enters sleep state, then this STA equipment keeps sleep state until this TXOP terminates.
7. method according to claim 1, is characterized in that, in the one or more frame of the current TXOP that described AP equipment sends to STA equipment, each frame comprises: this frame forbid TXOP power save instruction; Wherein, if forbid that TXOP power is saved to be designated as 0, represent and forbid that TXOP power saving is designated as no, allow the STA equipment in this basic service sets BSS to carry out power save operation at current TXOP; If forbid that TXOP power is saved to be designated as 1, represent that forbidding that TXOP power saving is designated as is forbid that the STA equipment in this BSS carries out power save operation at current TXOP.
8. a power saving method, is characterized in that, comprising:
Point of termination station STA equipment obtains the present frame of current transmission chance TXOP, and described present frame comprises the TXOP power saving instruction that access point AP equipment is arranged; Wherein, if all frames after the present frame in TXOP and present frame, described AP equipment all only gives same STA equipment transmission data, or described AP equipment all only gives several STA equipment transmission data in same multi-user's multiple-input, multiple-output MU-MIMO group, then the TXOP power of present frame saving instruction is set to allow power to save by described AP equipment; Or, if in the frame in TXOP after present frame, described AP equipment is to the STA equipment transmission data beyond several STA equipment indicated by the operated object mark of present frame, then the TXOP power of present frame saving instruction is set to forbid that power is saved by described AP equipment;
When the TXOP power saving of described present frame is designated as the saving of permission power, described STA equipment determines whether to enter sleep state according to the judged result of sleep condition.
9. method according to claim 8, it is characterized in that, in described frame in TXOP after present frame, AP equipment is to the STA equipment transmission data beyond several STA equipment indicated by the operated object mark of present frame, comprise: under single user multiple-input, multiple-output SU-MIMO pattern, described AP equipment is to the STA equipment transmission data beyond STA equipment indicated by the operated object mark of present frame; Under MU-MIMO pattern, described AP is to the STA equipment transmission data beyond the set of the multiple STA equipment compositions indicated by the operated object mark of present frame.
10. method according to claim 8, it is characterized in that, the present frame that described STA equipment obtains current TXOP specifically comprises: described STA equipment receives the one or more frame of the current TXOP that described AP equipment sends, described one or more frame comprises described present frame, wherein, each frame comprise this frame forbid TXOP power save instruction; In same TXOP, the value only allowing TXOP power to save instruction changes 1 time.
11. methods according to claim 10, is characterized in that, in same TXOP, only allow TXOP power to save instruction and allow power to save instruction from forbidding that power saving instruction is changed to.
12. methods according to claim 8, it is characterized in that, the present frame that described STA equipment obtains current TXOP specifically comprises: described STA equipment receives the one or more frame of the current TXOP that described AP equipment sends, described one or more frame comprises described present frame, wherein, each frame comprise this frame forbid TXOP power save instruction; In same TXOP, if the TXOP power of the former frame of present frame saves to be designated as forbid that power is saved, then allow the TXOP power that present frame is set to save and be designated as the saving of permission power, allow power to save if the TXOP power of the former frame of present frame saves to be designated as, then do not allow the TXOP power saving that present frame is set to be designated as and forbid that power is saved.
13. methods according to claim 8, is characterized in that, if described STA equipment enters sleep state, then this STA equipment keeps sleep state until this TXOP terminates.
14. methods according to claim 8, it is characterized in that, the present frame that described STA equipment obtains current TXOP specifically comprises: described STA equipment receives the one or more frame of the current TXOP that described AP equipment sends, described one or more frame comprises described present frame, wherein, each frame comprise this frame forbid TXOP power save instruction; If forbid that TXOP power is saved to be designated as 0, represent and forbid that TXOP power saving is designated as no, allow the STA equipment in this basic service sets BSS to carry out power save operation at current TXOP; If forbid that TXOP power is saved to be designated as 1, represent that forbidding that TXOP power saving is designated as is forbid that the STA equipment in this BSS carries out power save operation at current TXOP.
15. 1 kinds of access point AP equipment, is characterized in that, comprising:
Module is set, saves instruction for the TXOP power arranging each frame in transmission opportunity TXOP; If all frames after the present frame in TXOP and present frame, described AP equipment all only gives same point of termination station STA equipment transmission data, or described AP equipment all only gives several STA equipment transmission data in same multi-user's multiple-input, multiple-output MU-MIMO group, then the TXOP power of present frame saving instruction is set to allow power to save by the described module that arranges; Or, if in the frame in TXOP after present frame, described AP equipment is to the STA equipment transmission data beyond several STA equipment indicated by the operated object mark of present frame, then the TXOP power of present frame saving instruction is set to forbid that power is saved by the described module that arranges;
Sending module, for sending the one or more frame of current TXOP to STA equipment, to make described STA equipment when the TXOP power saving of present frame is designated as the saving of permission power, determines whether to enter sleep state according to the judged result of sleep condition.
16. AP equipment according to claim 15, it is characterized in that, in described frame in TXOP after present frame, described AP equipment is to the STA equipment transmission data beyond several STA equipment indicated by the operated object mark of present frame, comprise: under single user multiple-input, multiple-output SU-MIMO pattern, described AP equipment is to the STA equipment transmission data beyond STA equipment indicated by the operated object mark of present frame; Under MU-MIMO pattern, described AP is to the STA equipment transmission data beyond the set of the multiple STA equipment compositions indicated by the operated object mark of present frame.
17. AP equipment according to claim 15, is characterized in that, in the one or more frame of the current TXOP sent to STA equipment at described sending module, each frame comprises: this frame forbid that TXOP power saves instruction; Wherein, in same TXOP, the value only allowing TXOP power to save instruction changes 1 time.
18. AP equipment according to claim 17, is characterized in that, in same TXOP, only allow TXOP power to save instruction and allow power to save instruction from forbidding that power saving instruction is changed to.
19. AP equipment according to claim 15, is characterized in that, in the one or more frame of the current TXOP sent to STA equipment at described sending module, each frame comprises: this frame forbid that TXOP power saves instruction; Wherein, in same TXOP, if the TXOP power of the former frame of present frame saves to be designated as forbid that power is saved, then allow the TXOP power that present frame is set to save and be designated as the saving of permission power, allow power to save if the TXOP power of the former frame of present frame saves to be designated as, then do not allow the TXOP power saving that present frame is set to be designated as and forbid that power is saved.
20. AP equipment according to claim 15, is characterized in that, if described STA equipment enters sleep state, then this STA equipment keeps sleep state until this TXOP terminates.
21. AP equipment according to claim 15, is characterized in that, in the one or more frame of the current TXOP that described sending module sends to STA equipment, each frame comprises: this frame forbid TXOP power save instruction; Wherein, if forbid that TXOP power is saved to be designated as 0, represent and forbid that TXOP power saving is designated as no, allow the STA equipment in this basic service sets BSS to carry out power save operation at current TXOP; If forbid that TXOP power is saved to be designated as 1, represent that forbidding that TXOP power saving is designated as is forbid that the STA equipment in this BSS carries out power save operation at current TXOP.
22. 1 kinds of point of termination station STA equipment, is characterized in that, comprising:
Acquisition module, for obtaining the present frame of current transmission chance TXOP, described present frame comprises the TXOP power saving instruction that access point AP equipment is arranged; Wherein, if all frames after the present frame in TXOP and present frame, described AP equipment all only gives same STA equipment transmission data, or described AP equipment all only gives several STA equipment transmission data in same multi-user's multiple-input, multiple-output MU-MIMO group, then the TXOP power of present frame saving instruction is set to allow power to save by described AP equipment; Or, if in the frame in TXOP after present frame, described AP equipment is to the STA equipment transmission data beyond several STA equipment indicated by the operated object mark of present frame, then the TXOP power of present frame saving instruction is set to forbid that power is saved by described AP equipment;
Control module, when being designated as the saving of permission power for saving when the TXOP power of described present frame, according to the judged result of sleep condition being determined whether to controlling described STA equipment enters sleep state.
23. STA equipment according to claim 22, it is characterized in that, in described frame in TXOP after present frame, AP equipment is to the STA equipment transmission data beyond several STA equipment indicated by the operated object mark of present frame, comprise: under single user multiple-input, multiple-output SU-MIMO pattern, described AP equipment is to the STA equipment transmission data beyond STA equipment indicated by the operated object mark of present frame; Under MU-MIMO pattern, described AP is to the STA equipment transmission data beyond the set of the multiple STA equipment compositions indicated by the operated object mark of present frame.
24. STA equipment according to claim 22, it is characterized in that, described acquisition module is specifically for receiving the one or more frame of the current TXOP of described AP equipment transmission, described one or more frame comprises described present frame, wherein, each frame comprise this frame forbid TXOP power save instruction; In same TXOP, the value only allowing TXOP power to save instruction changes 1 time.
25. STA equipment according to claim 24, is characterized in that, in same TXOP, only allow TXOP power to save instruction and allow power to save instruction from forbidding that power saving instruction is changed to.
26. STA equipment according to claim 22, it is characterized in that, described acquisition module is specifically for receiving the one or more frame of the current TXOP of described AP equipment transmission, described one or more frame comprises described present frame, wherein, each frame comprise this frame forbid TXOP power save instruction; In same TXOP, if the TXOP power of the former frame of present frame saves to be designated as forbid that power is saved, then allow the TXOP power that present frame is set to save and be designated as the saving of permission power, allow power to save if the TXOP power of the former frame of present frame saves to be designated as, then do not allow the TXOP power saving that present frame is set to be designated as and forbid that power is saved.
27. STA equipment according to claim 22, is characterized in that, if described control module controls described STA equipment enter sleep state, then described control module controls this STA equipment maintenance sleep state until this TXOP terminates.
28. STA equipment according to claim 22, it is characterized in that, described acquisition module sends the one or more frame of current TXOP specifically for receiving described AP equipment, described one or more frame comprises described present frame, wherein, each frame comprise this frame forbid TXOP power save instruction; If forbid that TXOP power is saved to be designated as 0, represent and forbid that TXOP power saving is designated as no, allow the STA equipment in this basic service sets BSS to carry out power save operation at current TXOP; If forbid that TXOP power is saved to be designated as 1, represent that forbidding that TXOP power saving is designated as is forbid that the STA equipment in this BSS carries out power save operation at current TXOP.
29. 1 kinds of power saving methods, is characterized in that, comprising:
If do not allow to carry out power saving at current transmission chance TXOP, the TXOP power of present frame is saved instruction and is set to forbid that power is saved by access point AP equipment; Wherein, described TXOP power is saved to be designated as and is forbidden that TXOP power saves instruction, described present frame comprises the signaling VHT-SIG-A1 field of the superelevation throughput pattern of targeting sequencing, adopts the B22 bit of described VHT-SIG-A1 field as forbidding that TXOP power saves instruction.
30. methods according to claim 29, is characterized in that, if described B22 bit is 1, forbidding described in expression that TXOP power saving is designated as is forbid that the point of termination station STA of this basic service sets BSS carries out power save operation; If described B22 bit is 0, forbids described in expression that TXOP power saving is designated as no, allow the STA of this BSS to carry out power save operation.
31. methods according to claim 29, is characterized in that, described method also comprises:
Described AP equipment sends the one or more frame of current TXOP to described STA equipment, to make when the TXOP power saving of present frame is designated as the saving of permission power, described STA equipment determines whether to enter sleep state according to the judged result of sleep condition, if described STA equipment enters sleep state, then this STA equipment keeps sleep state until this TXOP terminates; In the one or more frame of the current TXOP sent to described STA equipment at described AP equipment, each frame comprises: this frame forbid that TXOP power saves instruction; In same TXOP, only allow TXOP power to save the value indicated and change 1 time, and only permission TXOP power saves instruction from forbidding that power is saved instruction and is changed to permission power saving instruction.
32. methods according to claim 29, is characterized in that,
Described permission carries out power saving at current TXOP, refers to that the communication system at described AP equipment place does not allow to carry out power saving at current TXOP;
If do not allow described to carry out power saving at current transmission chance TXOP, the TXOP power of present frame is saved instruction and is set to forbid that power saving specifically comprises by AP equipment:
If do not allow to carry out power saving at current TXOP, and the TXOP power of the former frame of described present frame is saved and is designated as and forbids that power is saved, and the TXOP power of described present frame saving instruction is set to forbid that power is saved by described AP equipment;
Or allow power to save if the TXOP power of the former frame of described present frame saves to be designated as, then the TXOP power not allowing described AP equipment to arrange described present frame is saved to be designated as and is forbidden that power is saved.
33. 1 kinds of power saving methods, is characterized in that, comprising:
Point of termination station STA equipment obtains the present frame of current transmission chance TXOP, and described present frame comprises the TXOP power saving instruction that access point AP equipment is arranged; Wherein, if do not allow to carry out power saving at current transmission chance TXOP, the TXOP power of present frame is saved instruction and is set to forbid that power is saved by described AP equipment; Described TXOP power is saved to be designated as and is forbidden that TXOP power saves instruction, and described present frame comprises the signaling VHT-SIG-A1 field of the superelevation throughput pattern of targeting sequencing, adopts the B22 bit of described VHT-SIG-A1 field as forbidding that TXOP power saves instruction.
34. methods according to claim 33, is characterized in that, if described B22 bit is 1, forbidding described in expression that TXOP power saving is designated as is forbid that the point of termination station STA of this basic service sets BSS carries out power save operation; If described B22 bit is 0, forbids described in expression that TXOP power saving is designated as no, allow the STA of this BSS to carry out power save operation.
35. methods according to claim 33, is characterized in that,
The present frame that described STA equipment obtains current TXOP specifically comprises: described STA equipment receives the one or more frame of the current TXOP that described AP equipment sends, and described one or more frame comprises described present frame; Wherein, in the one or more frame of the current TXOP sent at described AP equipment, each frame comprises: this frame forbid that TXOP power saves instruction; In same TXOP, only allow TXOP power to save the value indicated and change 1 time, and only permission TXOP power saves instruction from forbidding that power is saved instruction and is changed to permission power saving instruction;
After described STA equipment obtains the present frame of current TXOP, described method also comprises: when the TXOP power saving of present frame is designated as the saving of permission power, described STA equipment determines whether to enter sleep state according to the judged result of sleep condition, if described STA equipment enters sleep state, then this STA equipment keeps sleep state until this TXOP terminates.
36. methods according to claim 33, is characterized in that,
Described permission carries out power saving at current TXOP, refers to that the communication system at described AP equipment place does not allow to carry out power saving at current TXOP;
If do not allow described to carry out power saving at current transmission chance TXOP, the TXOP power of present frame is saved instruction and is set to forbid that power saving specifically comprises by AP equipment:
If do not allow to carry out power saving at current TXOP, and the TXOP power of the former frame of described present frame is saved and is designated as and forbids that power is saved, and the TXOP power of described present frame saving instruction is set to forbid that power is saved by described AP equipment;
Or allow power to save if the TXOP power of the former frame of described present frame saves to be designated as, then the TXOP power not allowing described AP equipment to arrange described present frame is saved to be designated as and is forbidden that power is saved.
37. 1 kinds of access point AP equipment, is characterized in that, comprising:
Module is set, saves instruction for the TXOP power arranging each frame in transmission opportunity TXOP; If do not allow to carry out power saving at current transmission chance TXOP, the TXOP power of present frame is saved instruction and is set to forbid that power is saved by access point AP equipment; Wherein, described TXOP power is saved to be designated as and is forbidden that TXOP power saves instruction, described present frame comprises the signaling VHT-SIG-A1 field of the superelevation throughput pattern of targeting sequencing, adopts the B22 bit of described VHT-SIG-A1 field as forbidding that TXOP power saves instruction.
38., according to AP equipment according to claim 37, is characterized in that, if described B22 bit is 1, forbidding described in expression that TXOP power saving is designated as is forbid that the point of termination station STA of this basic service sets BSS carries out power save operation; If described B22 bit is 0, forbids described in expression that TXOP power saving is designated as no, allow the STA of this BSS to carry out power save operation.
39., according to AP equipment according to claim 37, is characterized in that, also comprise:
Sending module, for sending the one or more frame of current TXOP to described STA equipment, to make when the TXOP power saving of present frame is designated as the saving of permission power, described STA equipment determines whether to enter sleep state according to the judged result of sleep condition, if described STA equipment enters sleep state, then this STA equipment keeps sleep state until this TXOP terminates; In the one or more frame of the current TXOP sent to described STA equipment at described sending module, each frame comprises: this frame forbid that TXOP power saves instruction; In same TXOP, only allow TXOP power to save the value indicated and change 1 time, and only permission TXOP power saves instruction from forbidding that power is saved instruction and is changed to permission power saving instruction.
40., according to AP equipment according to claim 37, is characterized in that,
Described permission carries out power saving at current TXOP, refers to that the communication system at described AP equipment place does not allow to carry out power saving at current TXOP;
The described module that arranges is not specifically for allowing to carry out power saving at current TXOP, and the TXOP power of the former frame of described present frame is saved and is designated as when forbidding that power is saved, the TXOP power of described present frame saving instruction is set to forbid that power is saved; Or, when the TXOP power saving of the former frame of described present frame is designated as the saving of permission power, does not then allow the TXOP power saving that described present frame is set to be designated as and forbid that power is saved.
41. 1 kinds of point of termination station STA equipment, is characterized in that, comprising:
Acquisition module, for obtaining the present frame of current transmission chance TXOP, described present frame comprises the TXOP power saving instruction that access point AP equipment is arranged; Wherein, if do not allow to carry out power saving at current transmission chance TXOP, the TXOP power of present frame is saved instruction and is set to forbid that power is saved by described AP equipment; Described TXOP power is saved to be designated as and is forbidden that TXOP power saves instruction, and described present frame comprises the signaling VHT-SIG-A1 field of the superelevation throughput pattern of targeting sequencing, adopts the B22 bit of described VHT-SIG-A1 field as forbidding that TXOP power saves instruction.
42. STA equipment according to claim 41, is characterized in that, if described B22 bit is 1, forbidding described in expression that TXOP power saving is designated as is forbid that the point of termination station STA of this basic service sets BSS carries out power save operation; If described B22 bit is 0, forbids described in expression that TXOP power saving is designated as no, allow the STA of this BSS to carry out power save operation.
43. STA equipment according to claim 41, is characterized in that,
Described acquisition module is specifically for receiving the one or more frame of the current TXOP of described AP equipment transmission, and described one or more frame comprises described present frame; Wherein, in the one or more frame of the current TXOP sent at described AP equipment, each frame comprises: this frame forbid that TXOP power saves instruction; In same TXOP, only allow TXOP power to save the value indicated and change 1 time, and only permission TXOP power saves instruction from forbidding that power is saved instruction and is changed to permission power saving instruction;
Described STA equipment also comprises:
Control module, when being designated as the saving of permission power for saving in the TXOP power of present frame, determine whether described STA equipment enters sleep state according to the judged result of sleep condition, if described STA equipment enters sleep state, then this STA equipment keeps sleep state until this TXOP terminates.
44. STA equipment according to claim 41, is characterized in that,
Described permission carries out power saving at current TXOP, refers to that the communication system at described AP equipment place does not allow to carry out power saving at current TXOP;
If do not allow described to carry out power saving at current transmission chance TXOP, the TXOP power of present frame is saved instruction and is set to forbid that power saving specifically comprises by AP equipment:
If do not allow to carry out power saving at current TXOP, and the TXOP power of the former frame of described present frame is saved and is designated as and forbids that power is saved, and the TXOP power of described present frame saving instruction is set to forbid that power is saved by described AP equipment;
Or allow power to save if the TXOP power of the former frame of described present frame saves to be designated as, then the TXOP power not allowing described AP equipment to arrange described present frame is saved to be designated as and is forbidden that power is saved.
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