CN103108383A - Power controlling method and wireless station device - Google Patents
Power controlling method and wireless station device Download PDFInfo
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- CN103108383A CN103108383A CN2011102465090A CN201110246509A CN103108383A CN 103108383 A CN103108383 A CN 103108383A CN 2011102465090 A CN2011102465090 A CN 2011102465090A CN 201110246509 A CN201110246509 A CN 201110246509A CN 103108383 A CN103108383 A CN 103108383A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention relates to the wireless communication field and provides a power controlling method. The power controlling method comprises the steps of sending a null data packet announcement (NDPA) to a receiving end, wherein the NDPA comprises address information and detection sequence. The detection sequence comprises a transmit opportunity_PS_NOT_ALLOWED (TXOP_PS_NOT_ALLOWED) indicating bit. The address information comprises a sending end address and a receiving end address. The TXOP_PS_NOT_ALLOWED indicating bit and the address information are used by the receiving end to judge whether entering a power saving state is allowed or not. An XOP_PS_NOT_ALLOWED indication is carried in a Sounding Sequence field of the NDPA and is used for by a target receiving end to judge whether the entering of the power saving state is allowed or not. And then a TXOP inner terminal power saving method based on the NDPA is achieved.
Description
Technical field
The present invention relates to wireless communication field, particularly a kind of method of power ratio control and wireless site equipment
Background technology
In wireless communication system, due to the application of MIMO (Multiple-Input Multiple-Out-put, multiple-input and multiple-output) technology and beamforming (beam forming) technology, it is more and more important that channel information becomes.Beam-shaper (beamformer) obtains channel information by the feedback of received beam receiver (beamformee), and as the reference of follow-up transmission data.Beam-shaper all obtained TXOP (Transmit opportunity, transmission opportunity) in the mode of competition before every data transfer, then the transmission of data in time span corresponding to this TXOP.
In prior art, the process of beam-shaper obtaining information information is as follows: beam-shaper (transmitting terminal) sends NDPA (Null Data Packet Announcement to beam receiver (receiving terminal), empty packet is stated) and NDP (Null Data Packet, empty packet) request channels information, after beam receiver receives NDPA and NDP, channel between beam-shaper and beam receiver is estimated, and according to rule, channel information is issued beam-shaper.When beam-shaper obtains multiuser channel information, for except other beam receiver first, can notify other beam receiver to feed back its channel information by sending Sounding Poll indication frame.
Transmission opportunity (Transmit opportunity, TXOP) has a kind of distinctive electricity-saving mechanism: TXOPPower Save (PS) electricity-saving mechanism.In TXOP PS electricity-saving mechanism, allow to support this machine-processed website (Station, STA) when entering sleep state when TXOP satisfies specified conditions in the time, thereby reach the purpose of power saving.
Access point (Access point, AP) can indicate whether to allow the STA that is in TXOP PS pattern to enter sleep state by TXOP_PS_NOT_ALLOWED (the not allowing TXOP PS) field that arranges in VHT-SIG-A1 (Very High Throughout Signal-A1, very the high-throughput information A 1).If NDPA adopts conventional form to send, this frame is difficult to offer the information whether STA allows TXOP power to save.Therefore be difficult at present realize based on terminal power method for saving in the TXOP of NDPA.
Summary of the invention
The embodiment of the present invention provides a kind of method of saving based on terminal power in the TXOP of NDPA.
A kind of method that the embodiment of the present invention discloses power ratio control comprises:
Send empty packet statement NDPA to receiving terminal, described NDPA comprises address information, detection sequence, wherein said detection sequence comprises the TXOP_PS_NOT_ALLOWED indicating bit, described address information comprises the STA address in receiving terminal address and STA information, and described TXOP_PS_NOT_ALLOWED indicating bit and described address information are used for described receiving terminal and judge whether to allow ingoing power to save state.
The method of a kind of power ratio control of the embodiment of the present invention comprises:
The empty packet statement NDPA that receiving end/sending end sends, described NDPA comprises address information, detection sequence, wherein said detection sequence comprises the TXOP_PS_NOT_ALLOWED indicating bit, described address information comprises the STA address in receiving terminal address and STA information;
Judge whether to allow ingoing power to save state according to described TXOP_PS_NOT_ALLOWED indicating bit and described address information.
A kind of wireless site equipment also is provided simultaneously, comprises:
Transmitting element, be used for sending empty packet statement NDPA to receiving terminal, described NDPA comprises address information, detection sequence, wherein said detection sequence comprises the TXOP_PS_NOT_ALLOWED indicating bit, described address information comprises the STA address in receiving terminal address and site STA information, and described TXOP_PS_NOT_ALLOWED indicating bit and described address information are used for described receiving terminal and judge whether to allow ingoing power to save state.
The indication of embodiments of the invention by carry TXOP_PS_NOT_ALLOWED in the Sounding of NDPA Sequence field, this indication is used for making the target receiving terminal to judge whether to allow ingoing power to save state, with the method that realizes saving based on terminal power in the TXOP of NDPA.
Description of drawings
Fig. 1 is the Channel Sounding flow chart at alone family.
Fig. 2 is the frame format schematic diagram of embodiment of the present invention NDPA.
Fig. 3 is the Sounding Sequence field of NDPA in the embodiment of the present invention.
Fig. 4 is the method for a kind of power ratio control of the embodiment of the present invention.
Fig. 5 is the wireless site device structure schematic diagram of the embodiment of the present invention.
Embodiment
The embodiment of the present invention relates to beam forming technique, can be applied in wireless local area network (WLAN) system, and the wireless device of use can be STA (Station, website).This STA includes but not limited to: mobile phone terminal, notebook computer, AP (Access Point, access point) etc.Wherein, when STA used beam forming technique to send data, this STA can be called beam-shaper beamformer, and when STA used the beam forming technique receive data, this STA can be called beam receiver beamformee.
The embodiment of the present invention can be applied to obtain usufructuary any wireless communication system of channel based on competitive way, obtains the usufructuary equipment of channel for first competition, can preferentially use channel to carry out transfer of data.Wherein, the channel right to use that competition obtains can be called send opportunity TXOP, and in the arbitrary moment in the TXOP time span, equipment can send data, if TXOP finishes, equipment can not re-use channel, can only again obtain the channel right to use by competition.
as shown in Figure 1, in the embodiment of the present invention, when beam-shaper obtains channel information, can be by asking to beam receiver transmission NDPA and NDP, after beam receiver is received NDPA and NDP, channel between beam-shaper and beam receiver is estimated, then the channel information (Channel Information) that obtains is sent to beam-shaper, the flow process that this flow process can be called in channel detection (Channel Sounding) Fig. 1 is the Channel Sounding flow process at alone family, refer to carry out between a beam-shaper and beam receiver the transmission of channel information.The channel information acquisition that the embodiment of the present invention relates to can be also multi-user's Channel Sounding flow process, refers to that a beam-shaper obtains channel information to a plurality of beam receiver.
Referring to Fig. 2, the frame format of a kind of NDPA, a NDPA frame comprises:
Frame Control: frame is controlled, and is used for the type of this frame of sign
Duration: the duration, be used for describing this frame length in time
RA (receiver address): receiving terminal address
TA (transmitter address): transmitting terminal address
Sounding Sequence: detection sequence
STA Info:STA information comprises STA address, STA feedback kind and channel matrix columns.
FCS (Frame Check Sequence): frame check sequence
The embodiment of the present invention increases the TXOP_PS_NOT_ALLOWED indication information in above-mentioned NDPA, and in the receiving course of the beam receiver (receiving terminal) of correspondence is realized based on the TXOP of NDPA the terminal power method for saving.
Consulting Fig. 3, carry the TXOP_PS_NOT_ALLOWED indicating bit in the Sounding of NDPA Sequence field, can be second bit in Sounding Sequence field.Sounding Sequence comprises the reserved place of 1 bit, the TXOP_PS_NOT_ALLOWED indicating bit of 1 bit and the channel detection sequence number of 6 bit.
Receiving terminal is after receiving NDPA, read in order the TXOP PS Not Allowed in Sounding Sequence, deposit it in corresponding parameter TXOP_PS_NOT_ALLOWED in RXVECTOR (receiving terminal after receiving physical layer information with the physical layer parameter list that forms after its arrangement and storage) (step is read the TXOP_PS_NOT_ALLOWED in the VHT-SIG-A of certain frame and deposit it in RXVECTOR corresponding parameter TXOP_PS_NOT_ALLOWED usually).
Receiving terminal can be known the current TXOP power save state that whether allows to enter according to the situation of this parameter; When for example TXOP_PS_NOT_ALLOWED is the first value, for example 0, expression allows the STA ingoing power under TXOP PS pattern to save state, otherwise does not allow ingoing power to save state.And further according to the RA of NDPA or the STA address judgement in the STA list, if the address of this receiving terminal is the destination address of NDPA, can not select to enter the TXOP power save state; If the address of this receiving terminal is not the destination address of NDPA, can select to enter the TXOP power save state.Power save state is sleep state.Also can the first value in practice being set to value is that 1 expression allows the STA ingoing power under TXOP PS pattern to save state, and the concrete value of first value here can arrange in system.
Consult Fig. 4, the method for a kind of power ratio control of the embodiment of the present invention, particularly a kind of method of saving based on terminal power in the TXOP of NDPA.
S101, send NDPA to receiving terminal, described NDPA comprises address information, detection sequence, wherein said detection sequence comprises the TXOP_PS_NOT_ALLOWED indicating bit, and described address information comprises that address information comprises the STA address in receiving terminal address and STA information.
S102, receiving terminal receive this NDPA, and this receiving terminal judges whether to allow ingoing power to save state according to described TXOP_PS_NOT_ALLOWED indicating bit and address information.
Receiving terminal can be known the current TXOP power save state that whether allows to enter according to this TXOP_PS_NOT_ALLOWED indicating bit; For example TXOP_PS_NOT_ALLOWED the first value, such as being 0 o'clock, representing to allow the STA under TXOP PS pattern to enter sleep state, otherwise do not allow to enter sleep state.Receiving terminal (this receiving terminal) is further the destination address of NDPA according to the address information judgement oneself of NDPA, if oneself be the destination address of NDPA, namely in the STA address in receiving terminal address or STA information, can not select to enter the TXOP sleep state; If oneself be not the destination address of NDPA, namely not in the STA address in receiving terminal address or STA information, can select to enter the TXOP sleep state.
In above-mentioned step, two steps are respectively transmitting terminal and receiver section steps independently separately, are respectively transmitting terminal and receiving terminal party of one's own independence flow process.
The indication of embodiments of the invention by carry TXOP_PS_NOT_ALLOWED in the Sounding of NDPA Sequence field, this indication is used for making the target receiving terminal to judge whether to allow ingoing power to save state, with the method that realizes saving based on terminal power in the TXOP of NDPA.
Further, another embodiment of the present invention can also carry out the control of TXOP power save state with the NDP with VHT transmission form after NDPA.
Transmitting terminal sends NDP afterwards again at transmission NDPA back SIFS (short interframe space, short frame period), and NDP adopts VHT to send form.Therefore, can utilize the bit TXOP_PS_NOT_ALLOWED in the VHT-SIG-A of NDP to indicate whether to allow to enter the TXOP power save state.
Receiving terminal reads the RA of NDPA or the address information in the STA list after receiving NDPA, judge whether this receiving terminal (oneself) is the target of NDPA.If not the target of NDPA, continue to receive NDP, and read TXOP_PS_NOT_ALLOWED in the VHT-SIG-A of NDP to judge whether that allowing to enter TXOP power saves.Save if allow to enter TXOP power, can select to enter the TXOP power save state.If the target of NDPA, the TXOP_PS_NOT_ALLOWED that no longer needs further to read in the VHT-SIG-A of NDP can determine that it can not enter the TXOP power save state.
Another kind of realization flow can for: receiving terminal obtains the RA of NDPA or the STA address in the STA list after receiving NDPA, and further receives NDP.At first receiving terminal reads TXOP_PS_NOT_ALLOWED in the VHT-SIG-A of NDP judging whether that allowing to enter TXOP power saves after receiving NDP, and further reads the NDPA that has stored and judge whether oneself is the target of NDPA.TXOP power is saved and oneself be not NDPA target STA if allow to enter, and can select ingoing power to save state, otherwise can not save state by ingoing power.
Above-mentioned method equally also can realize saving based on the power of terminal in the TXOP of NDPA.
The embodiment of the present invention gives a kind of wireless site equipment of realizing said method.Can be site STA or the access point AP in wireless local area in application.AP sends data to each, can think that AP is transmitting terminal, and STA is receiving terminal.Said method embodiment all can realize in wireless site equipment, and concrete method details all can realize in the corresponding module of wireless site equipment or unit.
Following embodiment can complete each flow process and the step of said method.
Consult Fig. 5, the wireless LAN station equipment of the embodiment of the present invention, site apparatus 50 comprises:
Transmitting element 501, be used for sending empty packet statement NDPA to receiving terminal, described NDPA comprises address information, detection sequence, wherein said detection sequence comprises the TXOP_PS_NOT_ALLOWED indicating bit, described address information comprises the STA address in receiving terminal address and site STA information, and described TXOP_PS_NOT_ALLOWED indicating bit and described address information are used for described receiving terminal and judge whether to allow ingoing power to save state.
During only as sending ending equipment, can pass through above-mentioned transmitting element 501 when site apparatus, complete function and the flow process of transmitting terminal.
Further, site apparatus 50 also comprises,
Receiving element 503, be used for the empty packet statement NDPA that receiving end/sending end sends, described NDPA comprises address information, detection sequence, wherein said detection sequence comprises the TXOP_PS_NOT_ALLOWED indicating bit, and described address information comprises transmitting terminal address and receiving terminal address;
Wherein the TXOP_PS_NOT_ALLOWED indicating bit is arranged in second bit of described detection sequence field.
TXOP_PS_NOT_ALLOWED indicating bit and described address information are used for described receiving terminal and judge whether to allow ingoing power to save state, perhaps state processing unit 505, when processing, if described TXOP_PS_NOT_ALLOWED indicating bit is the first value, and the address of described wireless site equipment is not in described address information, described state processing unit does not allow described wireless site equipment ingoing power to save state, if perhaps described TXOP_PS_NOT_ALLOWED indicating bit is the first value, and the address of described wireless site equipment is not in described address information, described state processing unit allows wireless site equipment ingoing power to save state.
Need to prove at last, one of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, to come the relevant hardware of instruction to complete by computer program, described program can be stored in a computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (ROM) or random store-memory body (RAM) etc.
Each functional unit in the embodiment of the present invention can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in a computer read/write memory medium.The above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.Above-mentioned each device or system can carry out the method in correlation method embodiment.
Claims (13)
1. the method for a power ratio control, is characterized in that, described method comprises:
Send empty packet statement NDPA to receiving terminal, described NDPA comprises address information, detection sequence, wherein said detection sequence comprises the TXOP_PS_NOT_ALLOWED indicating bit, described address information comprises the STA address in receiving terminal address and site STA information, and described TXOP_PS_NOT_ALLOWED indicating bit and described address information are used for described receiving terminal and judge whether to allow ingoing power to save state.
2. method according to claim 1, is characterized in that, described TXOP_PS_NOT_ALLOWED indicating bit and described address information are used for described receiving terminal and judge whether to allow ingoing power saving state to comprise:
If described TXOP_PS_NOT_ALLOWED indicating bit is the first value, and the address of described receiving terminal does not allow described receiving terminal ingoing power to save state in described address information.
3. method according to claim 1, is characterized in that, described TXOP_PS_NOT_ALLOWED indicating bit and described address information are used for described receiving terminal and judge whether to allow ingoing power saving state to comprise:
If described TXOP_PS_NOT_ALLOWED indicating bit is the first value, and the address of described receiving terminal allows described receiving terminal ingoing power to save state not in described address information.
4. method according to claim 1, is characterized in that, described TXOP_PS_NOT_ALLOWED indicating bit is arranged in second bit of described detection sequence field.
5. the method for a power ratio control, is characterized in that, described method comprises:
The empty packet statement NDPA that receiving end/sending end sends, described NDPA comprises address information, detection sequence, wherein said detection sequence comprises the TXOP_PS_NOT_ALLOWED indicating bit, described address information comprises transmitting terminal address and receiving terminal address;
Judge whether to allow ingoing power to save state according to described TXOP_PS_NOT_ALLOWED indicating bit and described address information.
6. method according to claim 5, is characterized in that, judges whether to allow ingoing power saving state to comprise according to described TXOP_PS_NOT_ALLOWED indicating bit and described address information:
If described TXOP_PS_NOT_ALLOWED indicating bit is the first value, and the address of described receiving terminal is in described address information, and described receiving terminal is not allowed to enter power save state.
7. method according to claim 5, is characterized in that, judges whether to allow ingoing power saving state to comprise according to described TXOP_PS_NOT_ALLOWED indicating bit and described address information:
If described TXOP_PS_NOT_ALLOWED indicating bit is the first value, and the address of described receiving terminal is in described address information, and described receiving terminal is allowed to enter power save state.
8. method according to claim 5, is characterized in that, described TXOP_PS_NOT_ALLOWED indicating bit is arranged in second bit of described detection sequence field.
9. a wireless site equipment, is characterized in that, described equipment comprises:
Transmitting element, be used for sending empty packet statement NDPA to receiving terminal, described NDPA comprises address information, detection sequence, wherein said detection sequence comprises the TXOP_PS_NOT_ALLOWED indicating bit, described address information comprises the STA address in receiving terminal address and site STA information, and described TXOP_PS_NOT_ALLOWED indicating bit and described address information are used for described receiving terminal and judge whether to allow ingoing power to save state.
10. equipment according to claim 9, is characterized in that, described equipment also comprises:
Receiving element, be used for the empty packet statement NDPA that receiving end/sending end sends, described NDPA comprises address information, detection sequence, wherein said detection sequence comprises the TXOP_PS_NOT_ALLOWED indicating bit, and described address information comprises transmitting terminal address and receiving terminal address;
State processing unit is used for judging whether to allow ingoing power to save state according to described TXOP_PS_NOT_ALLOWED indicating bit and described address information.
11. equipment according to claim 9 is characterized in that, the TXOP_PS_NOT_ALLOWED indicating bit in the NDPA that the NDPA that described transmitting element sends or described receiving element receive is arranged in second bit of described detection sequence field.
12. equipment according to claim 9 is characterized in that, described state processing unit comprises when being used for judging whether to allow ingoing power to save state according to described TXOP_PS_NOT_ALLOWED indicating bit and described address information:
If described TXOP_PS_NOT_ALLOWED indicating bit is the first value, and the address of described wireless site equipment is in described address information, and described state processing unit does not allow described wireless site equipment ingoing power to save state.
13. equipment according to claim 9, it is characterized in that, described state processing unit comprises when being used for judging whether to allow ingoing power to save state according to described TXOP_PS_NOT_ALLOWED indicating bit and described address information: if described TXOP_PS_NOT_ALLOWED indicating bit is the first value, and the address of described wireless site equipment is not in described address information, and described state processing unit allows wireless site equipment ingoing power to save state.
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| CN201110246509.0A CN103108383B (en) | 2011-08-25 | 2011-08-25 | Control method and the wireless site equipment of power |
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| CN201110246509.0A CN103108383B (en) | 2011-08-25 | 2011-08-25 | Control method and the wireless site equipment of power |
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| CN103108383A true CN103108383A (en) | 2013-05-15 |
| CN103108383B CN103108383B (en) | 2015-12-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022121918A1 (en) * | 2020-12-11 | 2022-06-16 | 华为技术有限公司 | Power control method in wireless local area network, and related apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110128929A1 (en) * | 2009-12-02 | 2011-06-02 | Yong Liu | Method and Apparatus for Sounding Multiple Stations |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110128929A1 (en) * | 2009-12-02 | 2011-06-02 | Yong Liu | Method and Apparatus for Sounding Multiple Stations |
Non-Patent Citations (1)
| Title |
|---|
| CHIN-HUNG（JACKSON）CHEN: "IEEE P802.11 Wireless LANs", 《IEEE 802.11-10/1361R1》, 30 November 2010 (2010-11-30), pages 38 - 39 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022121918A1 (en) * | 2020-12-11 | 2022-06-16 | 华为技术有限公司 | Power control method in wireless local area network, and related apparatus |
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