CN109412664B - Method for transmitting radio wakeup data, access point device, and readable medium - Google Patents
Method for transmitting radio wakeup data, access point device, and readable medium Download PDFInfo
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- 230000006870 function Effects 0.000 claims abstract description 115
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 230000000737 periodic effect Effects 0.000 claims description 11
- 230000005428 wave function Effects 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 11
- 230000007246 mechanism Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 5
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
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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
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Abstract
A transmission method of radio wakeup data, an access point device, and a readable medium, the transmission method of radio wakeup data comprising: determining the weight functions of the 1 st to the N-1 st transmitting antennas as follows: f. of1(x)、f2(x)、…、fN‑1(x) N is the number of the transmitting antennas, and N is more than or equal to 2; at least one of the weight functions of the 1 st to N-1 st transmit antennas satisfies the following condition: the phase time-varying complex function is a phase time-varying complex function with the amplitude of 1, and the variation range of the phase is an integer multiple of 360 degrees within the transmission duration of one WUR data; based on the weight function, the antenna array pattern of the N antennas is adjusted and radio wakeup data is transmitted. By applying the scheme, the channel quality of the WUR channel can be dynamically adjusted, the WUR channel is prevented from being in a poor state all the time, and therefore the success rate of the STA for normally receiving the radio awakening data is improved.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method for sending radio wakeup data, an access point device, and a readable medium.
Background
In a Wireless Local Area Network (WLAN) system, a Wireless Station device (STA) communicates with other devices through an Access Point device (AP). With the development of WLAN technology, a Wake Up Radio (WUR) mode is introduced.
In the WUR mode, the STA enters a sleep mode, only receives WUR packets sent by the AP, and after the AP sends the WUR packets to wake up the STA, the STA can enter a Primary Connectivity Radio (PCR) mode to normally receive and transmit data.
In the existing implementation scheme, for an STA in the WUR mode, since data can only be received and data cannot be sent, when an AP sends a WUR packet, the channel environment of the STA cannot be known, so that when the channel environment is poor, the STA cannot normally receive the WUR packet, and thus the STA cannot be awakened in time, and the performance of the WUR service is poor.
Disclosure of Invention
The technical problem solved by the embodiment of the invention is how to improve the success rate of normally receiving radio awakening data by the STA.
To solve the above technical problem, an embodiment of the present invention provides a method for sending radio wakeup data, including: determining the weight functions of the 1 st to the N-1 st transmitting antennas as follows: f. of1(x)、f2(x)、…、fN-1(x) N is the number of the transmitting antennas, and N is more than or equal to 2; at least one of the weight functions of the 1 st to N-1 st transmit antennas satisfies the following condition: the phase time-varying complex function is a phase time-varying complex function with the amplitude of 1, and the variation range of the phase is an integer multiple of 360 degrees within the transmission duration of one WUR data; based on the weight function, the antenna array pattern of the N antennas is adjusted and radio wakeup data is transmitted.
Optionally, the phase part of the weighting function is at least one of: a straight line function, a sawtooth wave function, and a triangular wave function.
Optionally, the weighting function is a periodic function or a non-periodic function.
Optionally, the adjusting the antenna array pattern of the N antennas and transmitting the radio wakeup data based on the weight function includes: in the digital domain, the antenna array pattern of the N antennas is adjusted and radio wakeup data is transmitted based on the weight function.
Optionally, the adjusting the antenna array pattern of the N antennas and transmitting the radio wakeup data based on the weight function includes: in the analog domain, the antenna array pattern of the N antennas is adjusted and radio wakeup data is transmitted based on the weight function.
An embodiment of the present invention provides an access point device, including: a determining unit adapted to determine the weighting functions of the 1 st to the N-1 st transmitting antennas as: f. of1(x)、f2(x)、…、fN-1(x) N is the number of the transmitting antennas, and N is more than or equal to 2; at least one of the weight functions of the 1 st to N-1 st transmit antennas satisfies the following condition: the phase time-varying complex function is a phase time-varying complex function with the amplitude of 1, and the variation range of the phase is an integer multiple of 360 degrees within the transmission duration of one WUR data; a transmitting unit adapted to adjust an antenna array pattern of the N antennas and transmit radio wakeup data based on the weight function.
Optionally, the phase part of the weighting function is at least one of: a straight line function, a sawtooth wave function, and a triangular wave function.
Optionally, the weighting function is a periodic function or a non-periodic function.
Optionally, the transmitting unit is adapted to adjust an antenna array pattern of the N antennas and transmit radio wakeup data based on the weight function in a digital domain.
Optionally, the transmitting unit is adapted to adjust an antenna array pattern of the N antennas and transmit radio wakeup data based on the weight function in an analog domain.
An embodiment of the present invention provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and has stored thereon computer instructions, where the computer instructions, when executed, perform any of the steps of the method described above.
An embodiment of the present invention provides an access point device, including a memory and a processor, where the memory stores computer instructions executable on the processor, and the processor executes the computer instructions to perform any one of the steps of the method described above.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
by determining the weight functions of the 1 st to the N-1 st transmitting antennas, then adjusting the antenna array modes of the N antennas and transmitting the radio awakening data based on the weight functions, because the change range of the phase of at least one weight function is an integer multiple of 360 degrees in the transmission duration of the primary radio awakening data, the channel quality of a WUR channel can be dynamically adjusted through the weight functions of the N antennas in the transmission duration of the primary radio awakening data, the WUR channel is prevented from being in a poor state all the time, and the success rate of the STA in normally receiving the radio awakening data is improved.
Drawings
Fig. 1 is a flowchart of a method for transmitting radio wakeup data according to an embodiment of the present invention;
fig. 2 is a schematic diagram of WUR channel power received by a station device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an OOK mechanism according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a method for transmitting radio wakeup data according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an access point device according to an embodiment of the present invention;
FIG. 6 is a diagram illustrating a phase function of f (x) according to an embodiment of the present invention;
FIG. 7 is a diagram illustrating another phase function of f (x) according to an embodiment of the present invention.
Detailed Description
In the existing implementation scheme, for an STA in the radio wakeup mode, since data can only be received and data cannot be sent, when an AP sends a radio wakeup data packet, the AP cannot know the channel environment of the STA, so that when the channel environment is poor, the STA cannot normally receive the radio wakeup data packet, and thus the STA cannot be waken up in time, and the performance of the radio wakeup service is poor.
In the embodiment of the invention, the weight functions of the 1 st to the N-1 st transmitting antennas are determined, then the antenna array modes of the N antennas are adjusted and the radio awakening data are transmitted based on the weight functions, and because the change range of the phase of at least one weight function is an integer multiple of 360 degrees in the transmission time length of the primary radio awakening data, the channel quality of a WUR channel can be dynamically adjusted through the weight functions of the N antennas in the transmission time length of the primary radio awakening data, the WUR channel is prevented from being in a poor state all the time, and the success rate of normally receiving the radio awakening data by the STA is improved.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the present invention provides a method for sending radio wakeup data, which may include the following steps:
step S101, determining the weight functions of the 1 st to the N-1 st transmitting antennas as: f. of1(x)、f2(x)、…、fN-1(x) N is the number of the transmitting antennas, and N is more than or equal to 2; at least one of the weight functions of the 1 st to N-1 st transmit antennas satisfies the following condition: is a phase time-varying complex function with amplitude of 1, and the phase varies in an integer multiple of 360 degrees within one transmission duration of WUR data.
In the specific implementation, because the STA in the radio wakeup mode can only receive data and cannot send data, and when the AP needs to send a radio wakeup data packet, the channel environment of the STA cannot be known, so that when the channel environment is poor, the STA may not normally receive the radio wakeup data packet.
In a specific implementation, at least one of the weighting functions of the 1 st to the N-1 st transmitting antennas is defined as f (x), and then: and f (x) is a complex function, the amplitude value is 1, the phase changes along with time, and the change range of the phase is an integer multiple of 360 degrees in the transmission time length of the radio wakeup data.
In a specific implementation, one, two, …, or N-1 of the weighting functions of the 1 st to N-1 st transmitting antennas can satisfy: is a phase time-varying complex function with amplitude of 1, and the phase varies in an integer multiple of 360 degrees within one transmission duration of WUR data.
For example, when 2 of the weight functions of the 1 st to N-1 st transmit antennas satisfy the following condition: the amplitude is a phase time-varying complex function with 1, and when the phase variation range is an integer multiple of 360 degrees in the transmission duration of one WUR data, the phase variation range of the weight function corresponding to the N antennas is an integer multiple of 2 x 360 degrees in the transmission duration of one WUR data.
For example, when N-1 of the weight functions of the 1 st to N-1 st transmitting antennas all satisfy the following condition: the phase time-varying complex function is a phase time-varying complex function with the amplitude of 1, and when the phase variation range is an integer multiple of 360 degrees in the transmission duration of one WUR data, the phase variation range of the weighting function corresponding to the N antennas is an integer multiple of (N-1) × 360 degrees in the transmission duration of one WUR data.
That is, when X of the weight functions of the 1 st to N-1 st transmit antennas all satisfy the following condition: the phase time-varying complex function is a phase time-varying complex function with the amplitude of 1, and when the variation range of the phase is an integer multiple of 360 degrees in the transmission duration of one WUR data, the variation range of the phase of the weighting function corresponding to the N antennas is an integer multiple of X X360 degrees in the transmission duration of one WUR data. Wherein X is more than or equal to 1 and less than or equal to N-1.
To enable those skilled in the art to better understand and implement the present invention, an exemplary diagram of a phase function (i.e., a function of a phase portion) of f (x) is provided, as shown in fig. 6.
Referring to fig. 6, the phase of f (x) varies with time period, and the phase varies in a range of 2 × Pi, i.e., 360 degrees, for one transmission duration of WUR data.
To enable those skilled in the art to better understand and implement the present invention, another schematic diagram of the phase function of f (x) is provided in the embodiment of the present invention, as shown in fig. 7.
Referring to fig. 7, the phase of f (x) varies with time period, and the range of the phase varies by 2 × Pi, i.e., 360 degrees, within one transmission duration of WUR data.
To enable those skilled in the art to better understand and implement the present invention, an embodiment of the present invention provides a schematic diagram of the WUR channel power received by a station device, as shown in fig. 2.
Referring to fig. 2, for the first WUR channel, in the range of the frequency band 21, the WUR channel Power (Power) received by the station device is low, and the radio wakeup packet may not be received normally; for the second WUR channel, the WUR channel Power (Power) received by the station device is low in the range of frequency band 22 and may not receive the radio wakeup packet properly.
In specific implementation, an AP sends a radio wakeup packet through an On-Off Key (OOK) mechanism, and an embodiment of the present invention provides a schematic diagram of an OOK mechanism, as shown in fig. 3.
Referring to fig. 3, in embodiment 31, when the OOK mechanism corresponds to "ON", it indicates that data is transmitted, and when the OOK mechanism corresponds to "OFF", it indicates that data is not transmitted. In embodiment 32, when the OOK scheme is "ON", it indicates that data is transmitted, and when the OOK scheme is "OFF", it indicates that data is not transmitted.
In a specific implementation, the number N of the transmitting antennas may be 2, or may be more than 2.
When N is 2, an embodiment of the present invention provides a schematic diagram of a method for transmitting radio wakeup data, as shown in fig. 4.
Referring to fig. 4, an original signal corresponding to the first transmitting antenna (TX1) of the AP41 is S1, the weight function is f (x), the transmitting signal of the first transmitting antenna (TX1) is S1 xf (x), the transmitting signal of the second transmitting antenna (TX2) is S2, and the signal S1 xf (x) and the signal S2 are received by the receiving antenna (Rx) of the STA42 after passing through the Fading Channel (Fading Channel) 43.
In a specific implementation, the signal S1 may be identical to the signal S2, or may have a certain correspondence, for example, the signal S2 is a signal corresponding to the signal S1 after cyclic shift (cyclic shift), and all of which belong to the protection scope of the embodiment of the present invention.
Where f (x) may be a complex function, the amplitude value is 1, the phase varies with time, and the range of variation of the phase is an integer multiple of 360 degrees within the transmission duration of one radio wakeup data.
In an implementation, the primary radio wakeup dataMay be a duration corresponding to "ON" in the OOK mechanism shown in fig. 3, corresponding to a plurality of WUR symbols. For example, the transmission duration of the one-time radio wakeup data corresponds to m symbols, the phase of f (x) is changed m times, and the phase value of each change is
And (4) degree.
Because the phase of f (x) can rotate 360 degrees in the sending time of the radio awakening data at one time, the channel quality of the WUR channel can be dynamically adjusted, the WUR channel is prevented from being in a poor state all the time, and the success rate of the STA for normally receiving the radio awakening data is improved.
And step S102, based on the weight function, adjusting the antenna array mode of the N antennas and sending radio awakening data.
In a specific implementation, the phase portion of the weighting function may be a linear function, a sawtooth function, a triangle function, or a function with other shapes.
In a specific implementation, the weighting function may be a periodic function or a non-periodic function.
In one embodiment of the invention, the antenna array mode of the N antennas is adjusted and WUR data is transmitted in the digital domain based on the weighting function. For example, the antenna array pattern of N antennas is adjusted by digital weighting and WUR data is transmitted.
In an embodiment of the invention, in the analog domain, the antenna array mode of the N antennas is adjusted and WUR data is transmitted based on the weight function. For example, the antenna array mode of the N antennas is adjusted and WUR data is transmitted by a weight function generated by an analog circuit or a Radio Frequency (RF) circuit.
In a specific implementation, when the AP transmits a radio wakeup packet using the OOK mechanism, there may be a guard period (legacy protection part) before the OOK signal, and the weight function is only used for the OOK signal portion.
By applying the scheme, the weight functions of the 1 st to the N-1 st transmitting antennas are determined, then the antenna array modes of the N antennas are adjusted and the radio awakening data are transmitted based on the weight functions, and because the change range of the phase of at least one weight function is an integer multiple of 360 degrees in the transmission time length of the primary radio awakening data, the channel quality of a WUR channel can be dynamically adjusted through the weight functions of the N antennas in the transmission time length of the primary radio awakening data, the WUR channel is prevented from being in a poor state all the time, and the success rate of normally receiving the radio awakening data by the STA is improved.
In order to make those skilled in the art better understand and implement the present invention, the embodiment of the present invention further provides an access point device capable of implementing the above-mentioned method for transmitting radio wakeup data, as shown in fig. 5.
Referring to fig. 5, the access point device 50 may include: a determination unit 51 and a transmission unit 52, wherein:
the determining unit 51 is adapted to determine the weighting functions of the 1 st to the N-1 st transmitting antennas as: f. of1(x)、f2(x)、…、fN-1(x) N is the number of the transmitting antennas, and N is more than or equal to 2; at least one of the weight functions of the 1 st to N-1 st transmit antennas satisfies the following condition: is a phase time-varying complex function with amplitude of 1, and the phase varies in an integer multiple of 360 degrees within one transmission duration of WUR data.
The transmitting unit 52 is adapted to adjust the antenna array pattern of the N antennas and transmit radio wake-up data based on the weight function.
In a specific implementation, the phase portion of the weighting function is at least one of: a straight line function, a sawtooth wave function, and a triangular wave function.
In a specific implementation, the weighting function is a periodic function or a non-periodic function.
In an embodiment of the present invention, the sending unit 52 is adapted to adjust an antenna array pattern of the N antennas and send radio wakeup data based on the weight function in a digital domain.
In an embodiment of the present invention, the transmitting unit 52 is adapted to adjust an antenna array pattern of the N antennas and transmit radio wakeup data based on the weight function in an analog domain.
In a specific implementation, the working procedure and principle of the access point device 50 may refer to the description in the method provided in the foregoing embodiment, and are not described herein again.
An embodiment of the present invention provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and on which a computer instruction is stored, where the computer instruction executes, when running, any of the steps corresponding to the foregoing methods, and details are not described here again.
An embodiment of the present invention provides an access point device, including a memory and a processor, where the memory stores a computer instruction capable of running on the processor, and when the processor runs the computer instruction, the processor executes steps corresponding to any of the above methods, which is not described herein again.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (12)
1. A method for transmitting radio wakeup data, comprising:
determining the weight functions of the 1 st to the N-1 st transmitting antennas as follows: f. of1(x)、f2(x)、…、fN-1(x) N is the number of the transmitting antennas, and N is more than or equal to 2; at least one of the weight functions of the 1 st to N-1 st transmit antennas satisfies the following condition: is a phase time-varying complex function with amplitude of 1, and the phase varies over 360 degrees within one transmission duration of WUR dataA multiple of an integer;
based on the weight function, the antenna array pattern of the N antennas is adjusted and radio wakeup data is transmitted.
2. The method of claim 1, wherein the phase portion of the weighting function is at least one of:
a straight line function, a sawtooth wave function, and a triangular wave function.
3. The method according to claim 1, wherein the weighting function is a periodic function or an aperiodic function.
4. The method of claim 1, wherein the adjusting the antenna array pattern of the N antennas and transmitting the radio wakeup data based on the weight function comprises: in the digital domain, the antenna array pattern of the N antennas is adjusted and radio wakeup data is transmitted based on the weight function.
5. The method of claim 1, wherein the adjusting the antenna array pattern of the N antennas and transmitting the radio wakeup data based on the weight function comprises: in the analog domain, the antenna array pattern of the N antennas is adjusted and radio wakeup data is transmitted based on the weight function.
6. An access point device, comprising:
a determining unit adapted to determine the weighting functions of the 1 st to the N-1 st transmitting antennas as: f. of1(x)、f2(x)、…、fN-1(x) N is the number of the transmitting antennas, and N is more than or equal to 2; at least one of the weight functions of the 1 st to N-1 st transmit antennas satisfies the following condition: is a phase time-varying complex function with amplitude of 1, and the phase varies in an integral multiple of 360 degrees within one transmission time of WUR dataCounting;
a transmitting unit adapted to adjust an antenna array pattern of the N antennas and transmit radio wakeup data based on the weight function.
7. The access point device of claim 6, wherein the phase portion of the weighting function is at least one of:
a straight line function, a sawtooth wave function, and a triangular wave function.
8. The access point device of claim 6, wherein the weighting function is a periodic function or a non-periodic function.
9. The access point device of claim 6, wherein the transmitting unit is adapted to adjust an antenna array pattern of the N antennas and transmit radio wakeup data in a digital domain based on the weighting function.
10. The access point device of claim 6, wherein the transmitting unit is adapted to adjust an antenna array pattern of the N antennas and transmit radio wakeup data in an analog domain based on the weighting function.
11. A computer-readable storage medium, being a non-volatile storage medium or a non-transitory storage medium, having computer instructions stored thereon, wherein the computer instructions, when executed, perform the steps of the method according to any one of claims 1 to 5.
12. An access point device comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the method of any one of claims 1 to 5.
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| US10492139B2 (en) * | 2016-08-31 | 2019-11-26 | Futurewei Technologies, Inc. | System and method for secure and quick wake up of a station |
| US10277378B2 (en) * | 2016-09-06 | 2019-04-30 | Intel IP Corporation | Wake-up receiver band and channel negotiation |
| US10728853B2 (en) * | 2016-10-06 | 2020-07-28 | Huawei Technologies Co., Ltd. | Wake up radio frame with spectrum spreading based single carrier |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103155435A (en) * | 2010-10-08 | 2013-06-12 | 阿尔卡特朗讯 | Setting uplink antenna transmission weights in soft handover |
| CN103369713A (en) * | 2012-03-29 | 2013-10-23 | 美国博通公司 | Session recovery after restart of network coordinator or AP |
| CN105723780A (en) * | 2013-12-16 | 2016-06-29 | 英特尔公司 | Remote wakeup for wi-fi devices |
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