CN107800526A - The method and apparatus of signal transacting - Google Patents

The method and apparatus of signal transacting Download PDF

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Publication number
CN107800526A
CN107800526A CN201611026905.1A CN201611026905A CN107800526A CN 107800526 A CN107800526 A CN 107800526A CN 201611026905 A CN201611026905 A CN 201611026905A CN 107800526 A CN107800526 A CN 107800526A
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CN
China
Prior art keywords
equipment
message
channel
synchronizing signal
duration
Prior art date
Application number
CN201611026905.1A
Other languages
Chinese (zh)
Inventor
杜振国
韩云博
程勇
容志刚
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华为技术有限公司
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Publication date
Priority to CN201610740694 priority Critical
Priority to CN2016107406941 priority
Priority to CN2016107767780 priority
Priority to CN201610776778 priority
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority claimed from CN201710702494.1A external-priority patent/CN108123784A/en
Priority claimed from PCT/CN2017/103970 external-priority patent/WO2018090741A1/en
Publication of CN107800526A publication Critical patent/CN107800526A/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver

Abstract

The embodiment of the present application provides a kind of method and apparatus of signal transacting.This method includes the first equipment and receives the first message that the second equipment is sent;First equipment determines the target duration of synchronizing signal according to the first message;First equipment generates the second message, second message includes the synchronizing signal, when a length of target duration of the synchronizing signal according to the target duration of the synchronizing signal;First equipment sends second message to second equipment.The equipment of the embodiment of the present application first can determine the duration of suitable synchronizing signal according to the first message that the second equipment is sent, and the second message of the synchronizing signal of a length of target duration when including is sent to the second equipment, wasted so as to avoid the second message of the synchronizing signal duration that transmission includes redundancy to caused by channel resource, improve the utilization rate of channel resource.

Description

The method and apparatus of signal transacting

Technical field

The application is related to the communications field, and more particularly, to the method and apparatus of signal transacting.

Background technology

Institute of Electrical and Electric Engineers (Institute of Electrical and Electronics Engineers, IEEE) Wireless Fidelity Internet of Things of the 802.11 normal structure plans based on 2.4G/5GHz frequency ranges (Wireless Fidelity Internet of Things, WiFi IoT) standard, its essential characteristic be low-power consumption and it is long away from From.A kind of existing method is by waking up radio frequency using low-power consumption (Lower Power, LP) in WiFi IoT equipment side (Wake-up Radio, WUR) reduces power consumption.Wake up radio frequency and also known as wake up receiver (Wake-up Receiver, WUR).

The WUR frames that can be received are referred to as WUR frames, in the prior art, the frame structure of WUR frames can include synchronizing signal (Synchronization, SYNC) and Start Frame Delimiter (Starting Frame Delimiter, SFD), this with 802.11b is similar, and SYNC effect is that to make receiving terminal to be timed with transmitting terminal synchronous.Supported two kinds of 802.11b SYNC parts are respectively complete 1 sequences of 128bits and complete 1 sequences of 56bits in frame format, and the length of SYNC parts is fixed. Using regular length SYNC, typically using worst condition to consider, i.e., under channel worst condition required for completion timing synchronization SYNC length, it is clear that this length is longer.And practical communication is not always in worst condition, therefore always using most protecting The SYNC length kept is not necessarily to.Therefore, the WUR frames for the SYNC signal that transmission includes regular length cause in the prior art The waste of channel resource.

The content of the invention

The embodiment of the present application provides a kind of method and apparatus of signal transacting, it is possible to increase the utilization rate of channel resource.

First aspect, there is provided a kind of method of signal transacting, this method include:First equipment receives the second equipment and sent First message;First equipment determines the target duration of the synchronizing signal according to the first message;First equipment is according to this The target duration of synchronizing signal, generate the second message, second message includes the synchronizing signal, the synchronizing signal when it is a length of this Target duration;First equipment sends second message to second equipment.

The first message that the equipment of the embodiment of the present application first is sent by receiving the second equipment, it is true according to the first message Determine the target duration of synchronizing signal and generate the second message, second message includes synchronizing signal, and second message includes When a length of target duration of synchronizing signal, and send second message to the second equipment so that the second equipment and the first equipment Synchronize, there is the second message that such first equipment is sent to the second equipment shorter but enough second equipment to complete The synchronizing signal of synchronizing function, wasted so as to reduce media resource, improve media utilization ratio.

In some possible implementations, the first message carries the expectation duration of the synchronizing signal, the expectation duration Represent that second equipment completes the duration of required synchronizing signal synchronous with first equipment;Wherein, first equipment according to The first message, determining the target duration of the synchronizing signal includes:First equipment is according to the expectation duration, when determining the target Long, the target duration is more than or equal to the expectation duration.

The expectation duration that the transmission of the second equipment is received when the first equipment (is expressed as L0) after, according to L0Determine synchronizing signal Target duration (being expressed as L).L is not less than L0, preferably L=L0.So carried by first message and it is expected duration, the first equipment The target duration of synchronizing signal can be determined, saves the power consumption of the first equipment.

In some possible implementations, first equipment receive second equipment transmission the first message it Before, this method also includes:First equipment sends the 3rd message in the first channel to second equipment, so that the second equipment root The channel quality of first channel is measured according to the 3rd message to generate the channel quality measurements of first channel, and according to The channel quality measurements of first channel determine the expectation duration of the synchronizing signal.

First equipment can send the 3rd message to the second equipment, so that the second equipment determines first according to the 3rd message Equipment can be according to the channel quality measurements more to the channel quality measurements between the second equipment, such second equipment Add and accurately determine it is expected duration, therefore the first equipment can accurately determine target duration according to duration it is expected, so as to Further improve media utilization ratio.

In some possible implementations, first equipment, which receives the first message that the second equipment is sent, to be included:This One equipment receives the first message of second equipment transmission in the first channel;Wherein, first equipment is according to the first message, Determining the target duration of the synchronizing signal includes:First equipment measures the channel matter of first channel according to the first message Measure and generate the channel quality measurements of first channel;First equipment is according to the channel quality measurement of first channel As a result, the target duration of the synchronizing signal is determined.

First equipment receives first message in the first channel, and the channel matter of the first channel is determined according to the first message The channel quality measurements of first channel are measured and generate, such first equipment can be according to the channel matter of first channel Measurements determine the target duration of synchronizing signal, that is to say, that the first equipment arrives the second equipment according to channel heterogeneite Channel quality of the channel quality of first device orientation as the first equipment to the second device orientation, i.e. the first equipment need not be single Solely send channel measurement information can and realize and know channel quality, so as to reduce the expense of the first equipment.

In some possible implementations, this method also includes:Second equipment transmission is received in first equipment Before the first message, first equipment sends the 3rd message in the first channel to second equipment, and the 3rd message is used for should The channel quality of second device measuring, first channel simultaneously generates the channel quality measurements of first channel;The first message Carry the channel quality measurements of first channel;Wherein, first equipment determines the synchronizing signal according to the first message Target duration include:First equipment determines the mesh of the synchronizing signal according to the channel quality measurements of first channel Timestamp is grown.

First equipment can send the 3rd message to the second equipment, so that the second equipment determines first according to the 3rd message Equipment receives the channel quality measurement knot that the second equipment is sent to the channel quality measurements between the second equipment, the first equipment Target duration can be determined more accurately out in fruit, such first equipment according to the channel quality measurements, simultaneously need not Second equipment determines it is expected duration according to channel measurement, so as to save the power consumption of the second equipment.

In some possible implementations, this method also includes:Second equipment transmission is received in first equipment Before the first message, first equipment receives the receiving ability information of second equipment transmission, and the receiving ability information represents Second equipment receives the receiving ability of the second message;Wherein, first equipment is according to the channel quality measurement of first channel As a result, determining the target duration of the synchronizing signal includes:First equipment is according to the channel quality measurements of first channel With the receiving ability information, the target duration of the synchronizing signal is determined.

First equipment can be determined accurately according to the receiving ability information of channel quality measurements and the second equipment The target duration of synchronizing signal, this method is most directly and most accurate, so as to improve the accuracy rate for determining target duration.

In some possible implementations, first channel includes at least one subchannel;Wherein, first equipment to Second equipment, which sends second message, to be included:First equipment at least one subchannel in first channel to this Two equipment send second message.

First equipment to the second equipment send the second message when use before used channel, or used The subchannel of channel, for example, used channel can be that the first equipment uses when sending three message to the second equipment Channel, or can also be the second equipment to the first equipment send the second message when the channel that uses.Such first equipment is led to The channel that using used channel, can be avoided using failure is crossed, improves the efficiency for sending the second message.

Second aspect, there is provided a kind of method of signal transacting, this method include:Second equipment sends the to the first equipment One message, the first message is used for first equipment and determines the target duration of synchronizing signal, and generates the second message, and this second disappears Breath includes the synchronizing signal, when a length of target duration of the synchronizing signal;Second equipment receives first equipment transmission Second message;Synchronizing signal of second equipment in second message, is synchronized with first equipment.

Second equipment sends first message to the first equipment, so that the first equipment determines synchronizing signal according to the first message Target duration, and the second message is generated according to the target duration, second message includes synchronizing signal, and second message package When a length of target duration of the synchronizing signal included, then second message of the first equipment transmission is received, the second equipment is according to this Synchronizing signal in second message synchronizes with the first equipment, so passes through the negotiation of the first equipment and the second equipment so that Second message is the synchronizing signal for having shorter but enough second equipment to complete synchronizing function, so as to reduce media resource Waste, improve media utilization ratio.

In some possible implementations, this method also includes:When second equipment determines the expectation of the synchronizing signal It is long, it is expected the duration of the synchronizing signal represent second equipment completion required synchronizing signal synchronous with first equipment when It is long;Wherein, second equipment sends first message to the first equipment and included:Second equipment sends to carry to first equipment and is somebody's turn to do The first message of the expectation duration of synchronizing signal.

Second equipment determines the duration (being expressed as it is expected duration) with the synchronous required synchronizing signal of the first equipment, and passes through First message is sent to the first equipment, and then the first equipment can accurately really according to the expectation duration carried in the first message Target duration is made, so as to save the power consumption of the first equipment.

In some possible implementations, this method also includes:Second equipment receives the 3rd message, the 3rd message For measuring the channel quality of the first channel;Second equipment determines the channel quality of first channel according to the 3rd message Measurement result;Wherein, second equipment determines that the expectation duration of the synchronizing signal includes:Second equipment is according to first channel Channel quality measurements, determine the expectation duration of the synchronizing signal.

Second equipment receives the 3rd message, and determines channel quality measurements according to the 3rd message, and such second sets It is standby accurately to be determined it is expected duration according to channel quality measurements, and will it is expected that duration is sent to the first equipment, this The equipment of sample first can accurately determine target duration, so as to further improve media utilization ratio.

In some possible implementations, this method also includes:Second equipment receives the 3rd message, the 3rd message For measuring the channel quality of the first channel;Second equipment determines the channel quality of first channel according to the 3rd message Measurement result;Wherein, second equipment sends first message to the first equipment and included:Second equipment is sent to first equipment Carry the first message of the channel quality measurements of first channel.

Second equipment determines channel measurement according to the 3rd message, and is sent to the first equipment, the first equipment according to The channel measurement determines target duration, does not need so the second equipment to be determined it is expected duration, section according to channel measurement The power consumption of the second equipment is saved.

The third aspect, there is provided a kind of method for determining to send the synchronizing signal length of message, this method include:First sets The standby first message that the transmission of the second equipment is received by first interface or second interface, first equipment disappear based on described first Breath determines synchronizing signal length L;First equipment generates the second message, and the first synchronizing signal is included in second message, The length of first synchronizing signal is L;First equipment sends described second by first interface to second equipment Message.

In some possible implementations, described the is received by first interface or second interface in first equipment Before the first message that two equipment are sent, first equipment sends the 3rd message by first interface or second interface, So that second equipment is measured based on the 3rd message to channel, and obtain channel measurement;Wherein, described Channel used in one equipment transmission the 3rd message is the first channel, and first equipment, which sends second message, to be made Channel is second channel, and the second channel is the subchannel of first channel, in the channel measurement at least Measurement result comprising second equipment to the second channel.

In some possible implementations, first equipment receives the first of the second equipment transmission by second interface Message, first equipment determine synchronizing signal length L based on the first message, including:The first message includes institute Channel measurement is stated, first equipment determines the synchronizing signal length L based on the channel measurement.

In some possible implementations, first equipment receives the first of the second equipment transmission by second interface Message, first equipment determine synchronizing signal length L based on the first message, including:Comprising the in the first message The desired synchronizing signal length L of two equipment0, first equipment is based on the L0The L is determined, wherein, L >=L0

In some possible implementations, first equipment determines synchronizing signal length L based on the first message, Including:First equipment is based on first message measurement channel, obtains channel measurement, and be based on the channel measurement As a result synchronizing signal length L is determined;Wherein, it is the 3rd channel that second equipment, which sends the channel used described in first message, Channel used in the first equipment transmission, second message is second channel, and the second channel is the 3rd channel Subchannel, measurement result of first equipment to the second channel is comprised at least in the channel measurement.

In some possible implementations, the second interface is main communication interface.

Fourth aspect, there is provided a kind of first equipment, first equipment can be with the second equipment communication, the first equipment bag Include:First equipment receives the first message of the second equipment transmission by first interface or second interface;Determining unit, it is used for Synchronizing signal length L is determined based on the first message;Generation unit, for generating the second message, wrapped in second message Containing the first synchronizing signal, the length of first synchronizing signal is L;After the first message is received, described first connects Mouthful, it is additionally operable to send second message to second equipment.

In some possible implementations, the first interface or second interface are additionally operable to:Lead in first equipment Cross before first interface or second interface receive the first message that second equipment is sent, first equipment passes through the One interface or second interface send the 3rd message so that and second equipment is measured based on the 3rd message to channel, And obtain channel measurement;Wherein, first equipment send the 3rd message used in channel be the first channel, institute Channel used in stating the first equipment transmission second message is second channel, and the second channel is first channel Subchannel, measurement result of second equipment to the second channel is comprised at least in the channel measurement.

In some possible implementations, the second interface disappears for receiving second equipment is sent first Breath, the determining unit are used to determine synchronizing signal length L based on the first message, including:The first message includes The channel measurement, first equipment determine the synchronizing signal length L based on the channel measurement.

In some possible implementations, the second interface disappears for receiving second equipment is sent first Breath, the determining unit are used to determine synchronizing signal length L based on the first message, including:Included in the first message The desired synchronizing signal length L of second equipment0, first equipment determines the L based on the L0, wherein, L >=L0

In some possible implementations, the determining unit is used to determine that synchronizing signal is grown based on the first message L is spent, including:First equipment is based on first message measurement channel, obtains channel measurement, and be based on the channel Measurement result determines synchronizing signal length L;Wherein, it is the 3rd letter that second equipment, which sends the channel used described in first message, Road, channel used in the first equipment transmission second message is second channel, and the second channel is the described 3rd The subchannel of channel, measurement result of first equipment to the second channel is comprised at least in the channel measurement.

In some possible implementations, the first interface leads to wake up radio frequency interface based on the second interface Believe interface.

5th aspect, there is provided a kind of first equipment, first equipment include being used to perform first aspect or first aspect Any possible implementation in method module.

6th aspect, there is provided a kind of second equipment, second equipment include being used to perform second aspect or second aspect Any possible implementation in method module.

7th aspect, there is provided a kind of system of signal transacting, the system include:

Second equipment of the first equipment of above-mentioned 5th aspect and above-mentioned 6th aspect.

Eighth aspect, this application provides a kind of first equipment, including:Processor, memory and communication interface.Processor It is connected with memory and communication interface.Memory is used for store instruction, and processor is used to perform the instruction, and communication interface is used for Communicated under the control of processor with other network elements.During the instruction of the computing device memory storage, the execution causes Method in any possible implementation of the computing device first aspect or first aspect.

9th aspect, this application provides a kind of second equipment, including:Processor, memory and communication interface.Processor It is connected with memory and communication interface.Memory is used for store instruction, and processor is used to perform the instruction, and communication interface is used for Communicated under the control of processor with other network elements.During the instruction of the computing device memory storage, the execution causes Method in any possible implementation of the computing device second aspect or second aspect.

Tenth aspect, this application provides a kind of computer-readable storage medium, has program stored therein in the computer-readable storage medium Code, the program code are used to indicate to perform the letter in any possible implementation of above-mentioned first aspect or first aspect Number processing method instruction.

On the one hand tenth, this application provides a kind of computer-readable storage medium, journey is stored with the computer-readable storage medium Sequence code, the program code are used in any possible implementation that instruction performs above-mentioned second aspect or second aspect The instruction of the method for signal transacting.

Based on above-mentioned technical proposal, the first message sent by receiving the second equipment, determined according to the first message same Walk the target duration of signal and generate the second message, send second message to the second equipment, such first equipment being capable of basis The first message that second equipment is sent determines the target duration of suitable synchronizing signal, includes the same of redundancy so as to avoid to send Second message of step signal duration wastes to caused by channel resource, improves channel resource utilization rate.

Brief description of the drawings

, below will be in embodiment or description of the prior art in order to illustrate more clearly of the technical scheme of the embodiment of the present application The required accompanying drawing used is briefly described.

Fig. 1 is the Organization Chart that low-power consumption wakes up system;

Fig. 2 is a kind of specific design of wake-up packet in the prior art;

Fig. 3 is the transmission mode of wake-up packet in the prior art;

Fig. 4 is the frame structure of the WUR frames of the embodiment of the present application;

Fig. 5 is the frame structure of WUR frames in the prior art;

Fig. 6 is the schematic interaction diagrams of the method for the signal transacting of the application one embodiment;

Fig. 7 is the schematic diagram of the method for the signal transacting of the application another embodiment;

Fig. 8 is the structural representation of the synchronizing signal of the application one embodiment;

Fig. 9 is the structural representation of the synchronizing signal of the application one embodiment;

Figure 10 is the schematic diagram of the method for the signal transacting of the application one embodiment;

Figure 11 is the schematic diagram of the method for the signal transacting of the application another embodiment;

Figure 12 is the schematic diagram of the method for the signal transacting of the application another embodiment;

Figure 13 is the schematic interaction diagrams of the method for the signal transacting of the application another embodiment;

Figure 14 is the schematic interaction diagrams of the method for the signal transacting of the application another embodiment;

Figure 15 is the schematic interaction diagrams of the method for the signal transacting of the application another embodiment;

Figure 16 is the schematic block diagram of first equipment of the application one embodiment;

Figure 17 is the schematic block diagram of second equipment of the application one embodiment;

Figure 18 is the schematic block diagram of the system of the signal transacting of the embodiment of the present application;

Figure 19 is the structural representation of first equipment of the embodiment of the present application;

Figure 20 is the structural representation of second equipment of the embodiment of the present application;

Figure 21 is the interaction diagrams of the application one embodiment;

Figure 22 is the interaction diagrams of another embodiment of the application;

Figure 23 is the interaction diagrams of another embodiment of the application;

Figure 24 is the interaction diagrams of another embodiment of the application;

Figure 25 is the interaction diagrams of another embodiment of the application;

Figure 26 is the structural representation of another embodiment of the application.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete Site preparation describes.Obviously, described embodiment is some embodiments of the present application, rather than whole embodiments.

The embodiment of the present application can apply to WLAN (Wireless Local Area Network, WLAN), mesh Preceding WLAN accepted standards are Institute of Electrical and Electric Engineers (Institute of Electrical and Electronics Engineers, IEEE) 802.11 series.WLAN can include multiple Basic Service Set (Basic Service Set, BSS), the network node in BSS is website (Station, STA), and the website that STA includes access point class accesses Point (Access Point, AP) and the website of non-access point class (none Access Point Station, non-AP STA). Each BSS can include an AP and multiple non-AP STA for being associated with the AP.

AP is also referred to as wireless access points or focus etc..AP is the access point that mobile subscriber enters cable network, main Be deployed in inside family, inside buildings and garden, typical covering radius be tens meters to rice up to a hundred, it is of course also possible to portion It is deployed on open air.For AP equivalent to a connection wired network and the bridge of wireless network, its main function is by each wireless network client End connects together, then by wireless network access network based on ethernet.Specifically, AP can carry Wireless Fidelity (Wireless Fidelity, WiFi) chip terminal device or the network equipment.Alternatively, AP can be to support setting for 802.11ax standards Standby, still optionally further, the AP can be to support 802.11ac, 802.11n, 802.11g, 802.11b and 802.11a or follow-up The equipment of a variety of WLAN standards such as version.

Non-AP STA can be wireless communications chips, wireless senser or wireless communication terminal.Such as:WiFi is supported to lead to The mobile phone of communication function, the tablet personal computer for supporting WiFi communication function, the set top box for supporting WiFi communication function, support WiFi The intelligent television of communication function, the intelligent wearable device for supporting WiFi communication function, support the vehicle-mounted logical of WiFi communication function Believe equipment and support the computer of WiFi communication function.Alternatively, website can support 802.11ax standards, further optional Ground, the website support a variety of WLAN systems such as 802.11ac, 802.11n, 802.11g, 802.11b and 802.11a or later release Formula.Non-AP STA can be also simply referred to as STA.

Fig. 1 shows that low-power consumption wakes up the Organization Chart of system.Website (Station, STA) in traditional WiFi interfaces (i.e. 802.11 principal communication modules (main radio)) on the basis of, introduce a LP-WUR interface.STA LP-WUP is continuously in Reception state, or intermittence are in reception state, when LP-WUR receives the wake-up packet (Wake-up from AP in reception state When Packet), wake-up signal is sent to 802.11 principal communication modules, to wake up 802.11 principal communication moulds in a dormant state Block, then enter row data communication with AP.Wherein, AP can also logically include 802.11 principal communication modules and WUR modules, but For current 802.11 standard, 802.11 principal communication modules usually from OFDM broadband signals, and WUR wake-up signals are arrowband Signal, for cost and consideration simple in construction is reduced, OFDM wideband transmitters can be utilized to produce arrowband WUR wake-up signals.Example Such as, by the portion subcarriers of ofdm signal it is vacant and only in transmission signal on arrowband corresponding to WUR wake-up signals, it is narrow so as to produce Band signal, here it is the example that WUR narrow band signals are produced using OFDM wideband transmitters, as AP is only used for comprising one in Fig. 1 The principal communication module of receiving and transmitting signal.

It should be strongly noted that 802.11 principal communication modules and WUR modules can also be carried out respectively in AP specific implementations Realize.In addition, AP and STA only has an antenna in Fig. 1, this mainly considers that 802.11 principal communication modules and WUR modules make In the case of similar frequency bands carrier wave (for example, 2.4GHz), the same antenna can be shared, to save cost and simplify device structure.But When 802.11 principal communication modules and WUR modules use different frequency range carrier wave, both should configure different antennae.For example, 802.11 Principal communication module uses 5GHz frequency ranges, and WUR modules use 2.4GHz frequency ranges, and now both should correspond to different antennae.

Why STA can reduce power consumption compared to direct using WUR using 802.11 principal communication modules, main reason is that The reception and decoding of wake-up packet are simple more than traditional 802.11 frames.Wake-up packet generally use is easy to the modulation methods of receiving terminal demodulation Formula, as on-off keying (on-off key, OOK) is modulated.So that OOK is modulated as an example, receiving terminal is by there is noenergy to judge to receive letter Number carrying information, for example, have energy be 1, noenergy 0.And traditional 802.11 frames in transmitting terminal due to using orthogonal frequency It is multiplexed (Orthogonal Frequency Division Multiplexing, OFDM), Binary Convolutional Code (Binary Convolutional Code, BCC)/low-density checksum (Low-density Parity Check, LDPC) etc., accordingly Ground, receiving terminal need to perform Fast Fourier Transform (FFT) (Fast Fourier Transform, FFT), forward error correction (Forward Error Correction, FEC) the sophisticated signal processing operation such as decoding, these operations need to expend big energy.

STA 802.11main radio can also be other communication interfaces in Fig. 1, such as Long Term Evolution (Long Term Evolution, LTE).For the module of data communication, principal communication module or principal communication interface (main radio) are referred to as, such as LTE, WiFi module;The module waken up for equipment, it is referred to as waking up radio frequency (WUR) module or wakes up radio frequency interface.

Fig. 2 shows a kind of specific design of wake-up packet in the prior art.As shown in Fig. 2 old Short Training domain (Legacy Short Training Field, L-STF), it is old long training domain (Legacy Long Training Field, L-LTF), old There is leading (preamble) part that signaling domain (Legacy Signal, L-SIG) corresponds to tradition 802.11, for backward simultaneous Hold, and sent in 20MHz (or 20MHz integral multiple) bandwidth using OFDM modes so that traditional WiFi equipment can be sentenced accordingly Disconnected current bag is WiFi bags, so as to select corresponding channel sense decision threshold.If not considering backward compatibility, L-STF, L- LTF, L-SIG are possible to be not present.The load (Payload) of wake-up packet partly using the modulation system for being easy to demodulation, such as switchs Keying (On-Off Key, OOK) modulation (specific such as amplitude shift keying (Amplitude Shift Keying, ASK)), can be more Transmitted on narrow bandwidth, such as 2MHz channels, 4MHz channels, 5MHz channels etc. (traditional WiFi minimum channels are 20MHz) so that connect The energy consumption of receiving end is smaller.

The load (Payload) of wake-up packet includes waking up leading (Wake-up preamble) and media intervention control (Medium Access Control, MAC) part, leading part is waken up similar to the STF and LTF in traditional WiFi, for same Step, automatic growth control (Automatic Gain Control, AGC) and channel estimation etc.;Media intervention control section is similar The MAC parts of traditional Wifi frame, further comprise MAC header (Header), frame (Frame Body), Frame Check Sequence (Frame Check Sequence, FCS), MAC parts may use the modes such as duplication code, spreading code, Manchester code to carry out simple channel Coding, to improve reliability, but is also possible to without using channel coding.Wake-up preamble include a string of specific sequences Row, STA WUR may not receive Legacy preamble parts above, but directly detect the particular sequence, so as to Identify the beginning of wake-up packet.When STA WUR receives wake-up packet, and the mark of oneself is detected from the MAC parts of wake-up packet (unicast/multicast/broadcast address), then send wake-up signal to 802.11 principal communication modules.For the consideration of efficiency of transmission, wake up Bag can be not added with Legacy 802.11preamble, MAC part also can be without using channel coding.Except OOK, Payload parts Also other modulation systems for being easy to demodulation, such as frequency shift keying (Frequency Shift Keying FSK) can be used.

If STA WUR is chronically at state of activation, it is clear that can compare power consumption.A kind of method of compromise is that WUR is intermittent It is active.The appearance of this awake window (Wake window) should be regular, so that AP is able to know that STA WUR when can receive wake-up packet.For example, WUR has 2ms to be active in every 100ms, as shown in Figure 3.When AP has Data need to STA send when, wake-up packet can be sent in the awake window of the STA, so as to wake up STA 802.11 principal communications Module.It is of course also possible to not introduce awake window, i.e. STA WUR is in listening state all the time, and this causes AP to wake up at any time STA, advantageously reduces wake-up delay, and shortcoming is the rise of STA energy consumptions.

Above-mentioned frame structure cannot be only used for wake-up packet, can be also used for other frames received by WUR, such as synchronous work( The synchronization frame of energy.Using above-mentioned form, the frame that can be received by WUR, WUR frames are referred to as.Because the function of WUR frames is fairly simple, Frame in its MAC part may also be not present.

A kind of Wake-up Preamble frame structure is fixed by synchronizing signal (Synchronization, SYNC), start frame Boundary's symbol (Starting Frame Delimiter, SFD), signaling domain (Signal, SIG) are formed, as shown in Figure 4.Wherein, it is synchronous Signal is a series of signal waveform of repetitions, such as by 10101010 ... caused waveform after OOK modulation is carried out, receiving terminal is based on Clock synchronization is realized in detection to repetitive pattern;Start Frame Delimiter is typically a predefined fixed sequence program, for carrying out The identification of frame start position, i.e., after receiving terminal, which is based on synchronizing signal, completes synchronization, predefined SFD sequences are detected again, Then it is thought that the beginning of a WUR frame;Signaling domain is used to carry MAC parts control information, such as the length of MAC parts, biography Defeated speed etc., if WUR length is fixed and only uses specific transmission speed, SIG is probably what is be not present.

Because WUR frames use simple modulation method, the receiving terminals such as OOK to be often also required to be connect by non-coherent demodulation Receive, it is worse compared to traditional WiFi OFDM modulation used and receiving terminal coherent demodulation, the reliability of WUR frames.It is higher to ensure Transmission reliability, transmission of the WUR frames per bit should occupy the longer time, i.e. the symbol lengths per bit are bigger.For example, there is document It is proposed, the symbol lengths of WUR frames are 4us, i.e., a symbol is transmitted per 4us.It is estimated that the transmission duration of a WUR frame may Need hundreds of us.On the other hand, because the function of WUR frames is fairly simple, therefore its MAC parts are generally shorter, may be only several Byte or more than ten of byte, this causes Wake-up Preamble accountings in whole WUR frames larger.Particularly when MAC parts When allowing using higher rate transmission, Wake-up Preamble can only use minimum speed limit, Wake-up Preamble transmission Time accounting in whole frame transmits duration is bigger.In a word, long Wake-up Preamble can cause larger media (Media) wasting of resources.Here " media " refer to wireless channel.

It is based on above-mentioned Wake-up Preamble structures it is assumed that the embodiment of the present invention proposes and a kind of reduces Wake-up The method of Preamble length, WUR frame lengths can be shortened as far as possible, be wasted so as to reduce media resource, improved media and utilize Efficiency.

The preamble for two kinds of frame formats that 802.11b is supported is as shown in Figure 5.Wherein, the long form in Fig. 5 (a) is real It is the form that original 802.11 standard than 802.11b earlier is supported on border, 802.11 this compatible form, SYNC parts are Complete 1 sequences of 128bits;Short format in Fig. 5 (b) is the form that 802.11b is newly introduced, and its SYNC parts are complete 1 sequences of 56bits Row.As can be seen here, technological evolvement causes synchronizing signal contraction in length.No matter 802.11b or original 802.11, the frame supported SYNC parts always regular length in the preamble of form.The length by most conservative situation by being determined, it means that, very In the case of more, the SYNC signal of such length is not necessarily to, and causes certain wasting of resources.

Fig. 6 shows the indicative flowchart of the method for the signal transacting according to the application one embodiment.

601st, the second equipment sends first message to the first equipment.

In the embodiment of the present application, the first equipment includes principal communication module, and the second equipment includes principal communication module and WUR moulds Block, or the first equipment can also also include WUR modules.First equipment is to send the equipment for waking up radio frequency frame, and the second equipment is Receive the equipment for waking up radio frequency frame.

For example, the first equipment can be AP (such as router), the second equipment can be STA (such as mobile phone);Or first set Standby can be STA (such as mobile phone), and the second equipment can be wearable device, such as bracelet.First equipment and the second equipment can be with It is other equipment with above-mentioned corresponding function etc., but the application is not limited to this.

First equipment can pass through principal communication interface or WUR interface first messages.Synchronizing signal is by multiple repetitions Signal waveform forms, wherein, the duration of synchronizing signal can be represented or by same by the time domain length of synchronizing signal The number of the signal waveform of repetition included in step waveform represents that the application is to this without limiting.

In some scenes, two equipment may have WUR to receive and dispatch ability simultaneously, then the role of two equipment depends on current Communication scenes.For example, mobile phone and bracelet, both may all possess WUR transmitting-receiving abilities, and have power saving demand, therefore can WUR mode of operations are run on simultaneously, but the awake window rule of other side oneself need to be informed.Specifically, when mobile phone has data to hand When ring is sent, then wake-up packet is sent to bracelet in the awake window of bracelet, now, mobile phone is the first equipment, and bracelet is second Equipment;When bracelet there are data to be sent to mobile phone, then wake-up packet, now, bracelet are sent to mobile phone in the awake window of mobile phone It is the first equipment, mobile phone is the second equipment.

It should be understood that can represent WUR modules in the embodiment of the present application by first interface, second interface represents principal communication mould Block, and the embodiment of the present application can also be to WUR modules or WUR interfaces without distinguishing, to principal communication module and principal communication interface Also without distinguishing.

Alternatively, as one embodiment, the second equipment determines the expectation duration of synchronizing signal, wherein, second equipment Sending first message to the first equipment includes:Second equipment carries the expectation duration of the synchronizing signal to the transmission of the first equipment The first message.

As shown in fig. 7, the duration that the second equipment determines to complete required synchronizing signal synchronous with the first equipment (is expressed as It is expected duration), the expectation duration can be that the ability based on itself first interface (i.e. WUR modules) determines desired synchronizing signal Duration, and report to the first equipment.The receiving ability of WUR modules in itself is typically that equipment determines that when dispatching from the factory, therefore can Reported as a basic capacity information to the first equipment.Or second equipment the second equipment can also be determined according to other information The duration of desired synchronizing signal, the application is to this without limiting.

For example, first message can be association request (Association Request)/response frame (Response Frame), wherein including the duration of desired synchronizing signal, i.e. the second equipment can report the WUR moulds of oneself in association process The desired synchronizing signal length of block.Now, first message is transmitted by second interface (i.e. principal communication module).

Second equipment to the first equipment send carry it is expected duration first message, the first message can be management frame, Data frame or can also be control frame.For example, as shown in figure 8, first message is management frame, the management frame includes special fixed The preset length for being used to carry synchronizing signal of justice is (assuming that a length of L when it is expected0) synchronizing signal element (Information Element, IE).First message is control frame, is carried by way of incidentally (piggyback) in the control domain of these frames L0, utilize high-throughput (High Throughput, HT)/very high-throughput (Very in 802.11n/ac/ax data frames High Throughput, VHT)/efficient (High Efficiency, HE) control (Control) domain or service quality (Quality of Service, QoS) Control domains, or frame (Frame) Control domains of control frame etc., set to carry second Standby desired synchronizing signal length L0.As shown in figure 9, using control frame (as request send (Request to Send, RTS)/ Clear to send (Clear to Send, CTS)/confirmation (Acknowledge, ACK) etc.) Frame Control domains in reservation Position carries L0, wherein, the bit that value is 0 is reserved bit, available for carrying L0

Alternatively, before the first message that the first equipment receives that the second equipment is sent, the first equipment is sent out to the second equipment The 3rd message of the channel quality for measuring the 3rd channel is sent, the second equipment determines the 3rd channel according to the 3rd message Channel quality measurements, and the channel quality measurements according to the 3rd channel, when determining the expectation of the synchronizing signal It is long.

It should be noted that for ease of distinguishing and describing conveniently in the embodiment of the present application, the second equipment is sent first Channel used in message is referred to as " the first channel ", and channel used in the first equipment to the second equipment the 3rd message of transmission is referred to as " the 3rd channel ".Wherein, the first channel can be with identical with the 3rd channel, can also be different.

3rd message can be sent by first interface or second interface, and the 3rd message can be WUR frames, i.e., first sets Preparation send a WUR frame, and the second equipment is measured based on this WUR frame to the 3rd channel.That is, pass through in the second equipment Before second interface sends first message, the first equipment can send the 3rd message to the second equipment, and the 3rd message is used to survey The channel quality of first equipment to the second device orientation (first direction can be expressed as) in the channel of flow control three, the second equipment according to 3rd message determines the channel quality measurements of the 3rd channel, and estimates oneself institute's phase according to the channel quality measurements The length (being expressed as it is expected duration) of the synchronizing signal of prestige, so as to be reported by being carried on first message to the first equipment.

The channel quality measurements can be channel quality information (Channel Quality Information, CQI), channel condition information (Channel State Information, CSI) or signal noise ratio (Signal-Noise Ratio, SNR) etc..

Alternatively, as one embodiment, as shown in Figure 10, the first equipment is sent for measuring the 3rd letter to the second equipment 3rd message of the channel quality in road, the second equipment determine the channel quality measurement knot of the 3rd channel according to the 3rd message Fruit, and the channel quality measurements are carried in first message and are sent to the first equipment.

Specifically, channel quality measurements can also be CQI, CSI or SNR etc..Specifically, channel quality is carried to survey The first message for measuring result can be management frame (as shown in Figure 8).3rd message can be special channel measurement message, such as zero Data message (Null Data Packet, NDP) channel detection message (Sounding).Now, the first equipment is sending the 3rd Measurement notification message should be also sent before message, to notify the second equipment measures to which channel, as shown in figure 11 (in figure Eliminate the transmission of subsequent third message), it should be noted that it is not drawn into being located at the measurement that may be present before the 3rd message in Figure 10 Notification message.This method has higher flexibility, and the main channel and WUR channels even if principal communication module are entirely different can also to be made With for example, the main channel of principal communication module is channel 1, for WUR channels in channel 2, two channels are non-overlapping, then the first equipment can Measurement announcement information is sent in channel 1, and the second equipment of instruction then receives NDP Sounding on channel 2, so as to letter Road 2 measures;3rd message can also be other message that principal communication module is sent, such as the periodically beacon of transmission (Beacon) frame, be that need not send special measurement message the advantages of this method, thus expense hand over it is small.

The embodiment of the present application can will determine the channel quality measurement knot of the first direction of the 3rd channel by the 3rd message Fruit is referred to as " explicit feedback ", is there is higher accuracy the advantages of " explicit feedback ".Second equipment is anti-in first message Channel quality measurements are presented, should at least include the second message of transmission in the channel quality measurements uses channel (to represent For second channel) measurement result.Certainly, it also can further include the measurement result of whole channel (i.e. the first channel).

Alternatively, as one embodiment, channel quality measurements can also be the modulation volume by the second equipment recommendation Code scheme (modulation coding scheme, MCS) is equivalently represented, that is to say, that the second equipment pushes away in first message A MCS is recommended, because MCS is general and channel quality has corresponding relation, such first equipment can be according to the second equipment recommendation MCS substantially estimates the substantially channel situation from the first equipment to the second equipment.

For example, in current 802.11 standard, the second equipment can be in the HT Control domains of data frame incidentally (piggyback) MCS recommended, the first equipment can utilize the MCS estimation preset lengths of the recommendation, so, just without special Measurement process measure channel, can further reduce expense.

602nd, the first equipment determines the target duration of synchronizing signal according to first message.

Alternatively, if carrying the expectation duration of the synchronizing signal in the first message, when first equipment is according to the expectation It is long, determine the target duration.

When the first equipment by second interface or first interface receive the second equipment send expectation duration (be expressed as L0) after, according to L0Determine the target duration (being expressed as L) of synchronizing signal.L is not less than L0, preferably L=L0.As shown in fig. 7, second Message omits Legacy Preamble that may be present, and diagram below uses similar fashion, but the application is not limited to This.

Alternatively, the first message carries the channel quality measurements of the 3rd channel, and the first equipment is according to the channel Quality measurements determine the target duration of synchronizing signal.

Before the second equipment sends first message by second interface, the first equipment sends the 3rd to the second equipment and disappeared Breath, so that the second equipment measures the 3rd channel according to the 3rd message, and obtain the 3rd channel quality measurements.Then, second Equipment reports channel quality measurements to the first equipment by first message.In general, channel quality is better, during target Length is smaller;Channel quality is poorer, and target duration is bigger.

Alternatively, as one embodiment, first equipment the first channel receive second equipment transmission this One message, the first equipment can measure the channel quality of first channel and generate first channel according to the first message Channel quality measurements, and then the target of the synchronizing signal can be determined according to the channel quality measurements of first channel Duration.

According to channel heterogeneite, it is assumed that the channel quality between the first equipment and the second equipment is substantially in the two directions Suitable, therefore the measurement result of the first channel (being expressed as second direction) of the second equipment to the first equipment is considered as the first equipment To the channel quality measurements of the first channel (being expressed as first direction) of the second equipment, which can be referred to as " implicit Feedback ".That is, being sent using first message as channel measurement message by the second equipment, the first equipment is according to first message First channel is measured and generates channel quality measurements, then synchronizing signal is determined based on channel quality measurements Target duration.As shown in figure 12, the channel quality measurements can be specifically channel quality information (Channel Quality Information, CQI) or channel condition information (Channel State Information, CSI) etc..By " implicit anti- Feedback ", it is not necessary to individually send channel measurement information can and realize and know channel quality, so as to reduce expense.

First message in the present embodiment is similar to the 3rd message, and first message can be special channel measurement message, such as NDP Sounding or other frames, such as data frame, management frame or control frame etc..First equipment is based on this and first disappeared Breath measures to channel.Similar, first message can be sent by first interface (WUR), can also pass through second interface Send.Often do not possess WUR emissivities in view of the second equipment, therefore it is preferred that first message is sent by second interface.

Alternatively, this method also includes:First equipment receives the receiving ability information of second equipment transmission, the reception Ability information represents that second equipment receives the receiving ability of the second message;Wherein, first equipment is surveyed according to the channel quality Result is measured, determining the target duration of the synchronizing signal includes:First equipment is according to the channel quality measurements and the reception Ability information, determine the target duration of the synchronizing signal.

Either the second equipment determines L based on channel quality measurements0When, or it is based on the second equipment in the first equipment When the channel quality measurements of feedback determine L, it may all need to consider the receiving ability of the message of reception second of the second equipment Information (i.e. the second equipment receives the receiving ability information for waking up radio frequency frame), will " wake-up radio frequency frame " statement in the embodiment of the present application For " the second message ".Here " receiving ability " can be the second equipment receive the message of same class second (such as frame format is identical) or The receiving ability of the message of inhomogeneity second (such as frame format differs).

For example, the first equipment is L based on the synchronizing signal length that channel quality measurements determine1, based on the second equipment WUR receiving abilities information determine synchronizing signal length be L2, then the L that finally determines0Or L should take larger in both one, That is max { L1,L2}。

Because the synchronizing signal length of WUR frames mainly influences the receptivity of the second equipment, and WUR frames are by the first equipment Transmission, the second equipment receive, therefore itself receiving ability and the first equipment fed back by the second equipment are to the second equipment The measurement result of channel, all it is most directly and most accurate for the first equipment determines the synchronizing signal length of WUR frames.

Alternatively, if second message is unicast frame, i.e. only second equipment, then the first equipment second set according to this The first message that preparation is sent determines synchronizing signal length L;If second message is multicast frames or broadcast frame, that is to say, that is had multiple Second equipment, then need to consider the first message of multiple each self feed backs of second equipment.Specifically, if the reception pair of the second message As for multiple known determination equipment (for example, the first equipment is AP, the second equipment is multiple STA associated with AP), then second The synchronizing signal length L of message should be according to a consideration most conservative in multiple second equipment, for example, AP is each based on three STA The L determined from the first message of transmission is respectively 30,35,27 (units:Repetitive pattern number), then AP sends the same of the second message Step signal length should be the maximum 35 of three;If the reception object of the first equipment it is indefinite (for example, the first equipment is AP, Two equipment both comprising association STA, also will not send first message comprising dereferenced STA, the latter as AP), then the second message is same Step signal length L should be the maximum permissible value of the length of synchronizing signal, i.e., considers according to most conservative situation.

In addition, the first equipment determines target duration according to channel quality, can be specifically according to the first equipment and second The distance between equipment, and transmission power etc. determine target duration, and the STA so reduced remotely receives the general of WUR frames Rate, so as to improve the security of the second message transmission, it is significant applied to wearable device.

603rd, the first equipment generates the second message, it is same that second message includes this according to the target duration of the synchronizing signal Walk signal, when a length of target duration of the synchronizing signal.

First equipment determines the target duration of synchronizing signal, and the frame format generation further according to system wakes up radio frequency frame (expression For the second message), for example, synchronizing signal, Start Frame Delimiter (Starting Frame can be included by waking up radio frequency frame Delimiter, SFD) and/or signaling domain etc..First equipment can generate the wake-up radio frequency frame of different-format for different system, As long as including synchronizing signal, the application is to waking up radio frequency frame format without limiting.

Most short synchronizing signal length needed for the WUR interface WUR frames of different second equipment may be different.This be by Caused by following reason:

1st, ability of the receiver of distinct device itself is variant.For example, the WUR of mobile phone has degree of precision and acceptance Can be, it is necessary to which shorter synchronizing signal can successfully complete synchronization;Sensor (for example, sensor for forest monitoring) is due to needing Want large scale deployment, cost must be cheap, and correspondingly, its WUR precision for being configured is relatively low, it is necessary to longer synchronizing signal ability Complete synchronous.

2nd, same equipment usage time is longer, due to device aging cause precision to reduce, it is necessary to longer synchronizing signal It can complete synchronous.For example, sensor device is expected work 5-10, so long time, plus adverse circumstances that may be present (for example, forest sensor in monitoring receives wind and weather Exposure to Sunlight), device aging is obvious.

3rd, with technology development and progress, it is necessary to shorter synchronizing signal can complete synchronizing function.For example, from original 802.11 arrive 802.11b, and synchronizing signal length shortens.

4th, the influence of distance and transmission power.The distance of first equipment and the second equipment is shorter, the transmitting work(of the first equipment Rate is bigger, and it is smaller that the second equipment completes synchronous required synchronizing signal length;Conversely, distance is bigger, transmission power is smaller, second It is longer that equipment completes synchronous required synchronizing signal length.

In aforementioned four factor, the ability of receiver in itself is that equipment determines that when dispatching from the factory, same caused by technological progress It is equally that equipment determines that when dispatching from the factory to walk signal length and reduce, therefore can uniformly be attributed to receiver self-ability (Capability);Device aging, distance and synchronizing signal length change caused by transmission power change, can be attributed to the The influence of channel between one equipment and the second equipment.

On the other hand, the change of synchronizing signal length will not cause the rising of receiver implementation complexity.Receiver is not Detect that the synchronizing signal repetitive pattern of predefined number is taken as the starting of frame from the signal received, but examine first Predefined repetitive pattern is surveyed, based on detecting that predefined repetitive pattern synchronizes and then detect predefined sequence (i.e. SFD signal), just it is considered the starting of frame.In other words, not to repetitive wave when receiver is synchronized based on synchronizing signal Shape number is counted, and the original position of frame judges to be determined by subsequent SFD.The change of synchronizing signal length is due to wherein to wrap The repetitive pattern number contained is changed, as long as enough second equipment is completed synchronous, the change of synchronizing signal length is for the The realization of two equipment does not just influence.

604th, the first equipment sends the second message to the second equipment.

Alternatively, the first equipment sends the second message by first interface to the second equipment, wherein the first equipment is to second Channel (being expressed as the 3rd channel) used in equipment the 3rd message of transmission should be able to cover what the second message of follow-up transmission used Channel (for ease of description, following to be referred to as " second channel ").In other words, sending the second channel that the second message uses can be At least one subchannel of 3rd channel or the 3rd channel, i.e. second channel can be the wholes of the 3rd channel Subchannel either part subchannel.For example, the 3rd message is sent with 20MHz channels, and the second message is with the 20MHz channels Certain 4MHz channel send.

Or first equipment to the second equipment send the second message used in second channel can be the second equipment to the One equipment sends the first channel used in first message, or the subchannel of first channel.

It should be understood that the first equipment sends the 3rd channel used in the 3rd message and the second equipment to first to the second equipment Equipment sends the first channel used in first message can be with identical, can also be different, and the application is to this without limiting.

605th, synchronizing signal of second equipment in the second message, synchronized with the first equipment.

The first message that the equipment of the embodiment of the present application first is sent by receiving the second equipment, determine the mesh of synchronizing signal Timestamp is long and generates the second message, then sends second message to the second equipment so that the second equipment carries out same with the first equipment There is shorter but enough second equipment to complete synchronous work(for step, the second message that such first equipment is sent to the second equipment The synchronizing signal of energy, wasted so as to reduce media resource, improve media utilization ratio.

It should be understood that when multiple second equipment in network be present, what the first equipment was sent to different second equipment second disappears The synchronizing signal of breath is probably different, but the synchronizing signal length L selected must be shorter but be enough to support receiving terminal Complete synchronization.

It should also be understood that in various embodiments of the present invention, the size of the sequence number of above-mentioned each process is not meant to perform The priority of order, the execution sequence of each process should be determined with its function and internal logic, without the reality of the reply embodiment of the present invention Apply process and form any restriction.

Therefore, the method for the signal transacting of the embodiment of the present application, the first message sent by receiving the second equipment, according to The first message determines the target duration of synchronizing signal and generates the second message, is sent to the second equipment for the second equipment and the The second message that one equipment synchronizes, it is suitable that the first message that such first equipment can be sent according to the second equipment determines The target duration of synchronizing signal, and to the second equipment send include synchronizing signal target duration the second message, so as to avoid The second message for sending the synchronizing signal duration for including redundancy wastes to caused by channel resource, improves channel resource and utilizes Rate.

Figure 13 shows the interaction diagrams of the method for the signal transacting according to the application one embodiment.The application is implemented The implication of various terms in example is identical with foregoing embodiments.

It should be noted that this is intended merely to help those skilled in the art to more fully understand the embodiment of the present application, and unrestricted Apply for the scope of embodiment.

1301, the first equipment receives first message in the first channel, and first channel includes at least one subchannel.

1302, the first equipment determines the channel quality measurements of the first channel according to first message.

1303, the first equipment determines the target duration of synchronizing signal according to the channel quality measurements of the first channel.

1304, the first equipment generates the second message, second message includes the synchronizing signal, and this is same according to target duration Walk when a length of target duration of signal.

1305, the first equipment sends second message at least one subchannel in the first channel, to the second equipment.

1306, synchronizing signal of second equipment in second message synchronizes with the first equipment.

Therefore, the method for the signal transacting of the embodiment of the present application, the first equipment receive the second equipment in the first channel and sent First message, the channel quality measurements of the first channel are determined according to the first message, and according to the letter of first channel Road quality measurements determine that the target duration of synchronizing signal generates the second message, the first channel subchannel to the second equipment The second message synchronized for the second equipment and the first equipment is sent, such first equipment can be made according to by first message Channel quality measurements are determined for measurement message, and the mesh of suitable synchronizing signal is determined according to channel quality measurements Timestamp grow, and to the second equipment send include synchronizing signal target duration the second message, so as to avoid transmission include it is superfluous Second message of remaining synchronizing signal duration wastes to caused by channel resource, improves channel resource utilization rate.

Figure 14 shows the interaction diagrams of the method for the signal transacting according to the application another embodiment.The application is real The implication for applying the various terms in example is identical with foregoing embodiments.

It should be noted that this is intended merely to help those skilled in the art to more fully understand the embodiment of the present application, and unrestricted Apply for the scope of embodiment.

1401, the first equipment sends the 3rd message in the 3rd channel, and the 3rd channel includes at least one subchannel.

1402, the second equipment measures the channel quality measurements of the 3rd channel according to the 3rd message.

1403, the second equipment determines the preset length of synchronizing signal according to the channel quality measurements of the 3rd channel.

1404, the second equipment sends the first message for carrying and it is expected duration.

1405, the first equipment determines target duration according to duration it is expected.

1406, the first equipment generates the second message, second message includes the synchronizing signal, and this is same according to target duration Walk when a length of target duration of signal.

1407, the first equipment sends second message in the subchannel of the 3rd channel to the second equipment.

1408, synchronizing signal of second equipment in second message synchronizes with the first equipment.

Therefore, the method for the signal transacting of the embodiment of the present application, the first equipment are sent with to the 3rd channel to the second equipment Carry out the 3rd message of channel measurement so that the second equipment determines the channel quality measurement of the 3rd channel according to the 3rd message As a result, and according to the channel quality measurements determine the expectation duration of the synchronizing signal of the second device requirement, the second equipment to First equipment sends the first message for the expectation duration for carrying the synchronizing signal, when the first equipment is according to the expectation of the synchronizing signal The long target duration for determining synchronizing signal simultaneously generates the second message, and the first equipment is sent for the second equipment and the to the second equipment The second message that one equipment synchronizes, the expectation duration for the synchronizing signal that such first equipment can be sent according to the second equipment It is determined that the target duration of suitable synchronizing signal, and send the second of the target duration for including synchronizing signal to the second equipment and disappear Breath, waste, improve to caused by channel resource so as to avoid the second message of the synchronizing signal duration that transmission includes redundancy Channel resource utilization rate.

Figure 15 shows the interaction diagrams of the method for the signal transacting according to the application another embodiment.The application is real The implication for applying the various terms in example is identical with foregoing embodiments.

It should be noted that this is intended merely to help those skilled in the art to more fully understand the embodiment of the present application, and unrestricted Apply for the scope of embodiment.

1501, the second equipment receives the 3rd message that the first equipment sends in the 3rd channel, and the 3rd message is used to measure the The channel quality of three channels, the 3rd channel include at least one subchannel.

1502, the second equipment determines the channel quality measurements of the 3rd channel according to the 3rd message.

1503, the second equipment sends the first message for carrying channel quality measurements to the first equipment.

1504, the first equipment determines target duration according to channel quality measurements.

1505, the first equipment generates the second message, second message includes the synchronizing signal, and this is same according to target duration Walk when a length of target duration of signal.

1506, the first equipment sends second message in the subchannel of the 3rd channel to the second equipment.

1507, synchronizing signal of second equipment in second message synchronizes with the first equipment.

Therefore, the method for the signal transacting of the embodiment of the present application, the first equipment are sent with to the 3rd channel to the second equipment Carry out the 3rd message of channel measurement so that the second equipment determines the channel quality measurement of the 3rd channel according to the 3rd message As a result, the second equipment sends the first message for carrying the channel quality measurements to the first equipment, and the first equipment is according to the letter Road quality measurements determine the target duration of synchronizing signal and generate the second message, and the first equipment is sent to the second equipment to be used for The second message that second equipment synchronizes with the first equipment, the channel matter that such first equipment can be sent according to the second equipment Measurements determine the target duration of suitable synchronizing signal, and the target duration for including synchronizing signal is sent to the second equipment The second message, so as to avoid send include redundancy synchronizing signal duration the second message to caused by channel resource wave Take, improve channel resource utilization rate.

It should be understood that in the various embodiments of the application, the size of the sequence number of above-mentioned each process is not meant to perform suitable The priority of sequence, the execution sequence of each process should be determined with its function and internal logic, without the implementation of reply the embodiment of the present application Process forms any restriction.

The method of the signal transacting according to the embodiment of the present application has been described in detail above, has been described below according to the application The equipment of the signal transacting of embodiment.

Figure 16 shows the schematic block diagram of the first equipment according to the embodiment of the present application.As shown in figure 16, this first sets Standby 1600 include:

Receiving module 1610, the first message sent for receiving the second equipment;

Processing module 1620, for the first message received according to the receiving module 1610, determine the synchronizing signal Target duration;

The processing module 1620, the target duration of the synchronizing signal determined according to the processing module 1620 is additionally operable to, it is raw Into the second message, second message includes the synchronizing signal, when a length of target duration of the synchronizing signal;

Sending module 1630, for sending second message of the processing module 1620 generation to second equipment.

Therefore, first equipment of the embodiment of the present application, the first message sent by receiving the second equipment, it is determined that synchronous The target duration of signal simultaneously generates the second message, and second message includes synchronizing signal, and the synchronous letter that second message includes Number when a length of target duration, then send second message to the second equipment so that the second equipment carries out same with the first equipment There is shorter but enough second equipment to complete synchronous work(for step, the second message that such first equipment is sent to the second equipment The synchronizing signal of energy, wasted so as to reduce media resource, improve media utilization ratio.

Alternatively, the first message carries the expectation duration of the synchronizing signal, and the expectation duration of the synchronizing signal represents should Second equipment completes the duration of required synchronizing signal synchronous with first equipment;The processing module 1620 is specifically used for:Root According to the expectation duration, the target duration of the synchronizing signal is determined, the target duration is not less than the expectation duration.

Alternatively, the sending module 1630 is additionally operable to send the 3rd message to second equipment in the first channel, so that should Second equipment measures the channel quality of first channel according to the 3rd message, generates the channel quality measurement knot of first channel Fruit, and determine according to the channel quality measurements of first channel expectation duration of the synchronizing signal.

Alternatively, the receiving module 1610 is additionally operable to first equipment and receives being somebody's turn to do for second equipment transmission in the first channel First message;The processing module 1620 is specifically used for:According to the first message, channel quality and the generation of first channel are measured The channel quality measurements of first channel;According to the channel quality measurements of first channel, the synchronizing signal is determined Target duration.

Alternatively, the sending module 1630 be additionally operable to the first channel to second equipment send the 3rd message, the 3rd Message is used for the channel quality of second device measuring first channel and generates the channel quality measurements of first channel; The first message carries the channel quality measurements of first channel;The processing module 1620 is specifically used for:According to this first The channel quality measurements of channel, determine the target duration of the synchronizing signal.

Alternatively, the receiving module 1610 is additionally operable to receive the receiving ability information of second equipment transmission, the reception energy Force information represents that second equipment receives the receiving ability of the second message;The processing module 1620 is specifically used for:According to this first The channel quality measurements of channel and the receiving ability information, determine the target duration of the synchronizing signal.

Alternatively, first channel includes at least one subchannel;The sending module 1630 is specifically used for:In first letter In at least one subchannel in road second message is sent to second equipment.

Therefore, first equipment of the embodiment of the present application, the first message sent by receiving the second equipment, it is determined that synchronous The target duration of signal simultaneously generates the second message, and second message includes synchronizing signal, and the synchronous letter that second message includes Number when a length of target duration, and send second message to the second equipment so that the second equipment carries out same with the first equipment There is shorter but enough second equipment to complete synchronous work(for step, the second message that such first equipment is sent to the second equipment The synchronizing signal of energy, wasted so as to reduce media resource, improve media utilization ratio.

The method of the signal transacting according to the embodiment of the present application is may correspond to according to first equipment of the embodiment of the present application Executive agent, and above and other operation and/or function of the modules in the first equipment is foregoing each in order to realize respectively The corresponding flow of individual method, for sake of simplicity, will not be repeated here.

Figure 17 shows the schematic block diagram of the first equipment according to the embodiment of the present application.As shown in figure 17, this second sets Standby 1700 include:

Sending module 1710, for sending first message to the first equipment, the first message determines for first equipment The target duration of synchronizing signal, and generate the second message, second message includes the synchronizing signal, the synchronizing signal when it is a length of The target duration;

Receiving module 1720, for receiving second message of first equipment transmission;

Processing module 1730, for the synchronizing signal in second message, synchronized with first equipment.

Therefore, second equipment of the embodiment of the present application, by sending first message to the first equipment, so that the first equipment root The target duration of synchronizing signal is determined according to the first message, and the second message, second message package are generated according to the target duration Include synchronizing signal, and when a length of target duration of synchronizing signal that second message includes, then receive the transmission of the first equipment Second message, synchronizing signal of second equipment in second message synchronize with the first equipment, such second equipment The second message received is the synchronizing signal for having shorter but enough second equipment to complete synchronizing function, so as to reduce Media resource wastes, and improves media utilization ratio.

Alternatively, the processing module 1730 is additionally operable to determine the expectation duration of the synchronizing signal, the expectation of the synchronizing signal Duration represents that second equipment completes the duration of required synchronizing signal synchronous with first equipment;The sending module 1710 has Body is used for:The first message for the expectation duration for carrying the synchronizing signal is sent to first equipment.

Alternatively, the receiving module 1720 is additionally operable to the second equipment and receives the 3rd message, and the 3rd message is used to measure the The channel quality of one channel;The processing module 1730 is additionally operable to, according to the 3rd message, determine the channel quality of first channel Measurement result;The processing module 1730 is specifically used for:According to the channel quality measurements of first channel, determine that the synchronization is believed Number expectation duration.

Alternatively, the receiving module 1720 is additionally operable to receive the 3rd message, and the 3rd message is used to measure the first channel Channel quality;The processing module 1730 is additionally operable to, according to the 3rd message, determine the channel quality measurements of first channel; The processing module 1730 is specifically used for:Sent to first equipment channel quality measurements that carry first channel this One message.

Therefore, second equipment of the embodiment of the present application, by sending first message to the first equipment, so that the first equipment root The target duration of synchronizing signal is determined according to the first message, and the second message, second message package are generated according to the target duration Include synchronizing signal, and when a length of target duration of synchronizing signal that second message includes, then receive the transmission of the first equipment Second message, synchronizing signal of second equipment in second message synchronize with the first equipment, such second equipment The second message received is the synchronizing signal for having shorter but enough second equipment to complete synchronizing function, so as to reduce Media resource wastes, and improves media utilization ratio.

The method of the signal transacting according to the embodiment of the present application is may correspond to according to second equipment of the embodiment of the present application Executive agent, and above and other operation and/or function of the modules in the second equipment is foregoing each in order to realize respectively The corresponding flow of individual method, for sake of simplicity, will not be repeated here.

Figure 18 shows the system 1800 of the signal transacting of the embodiment of the present application, and the system 1800 includes:

The second equipment in the first equipment 1600 and embodiment as shown in figure 17 in embodiment as shown in figure 16 1700。

Figure 19 shows the structural representation for the first equipment that embodiments herein provides.As shown in figure 19, this first Equipment includes at least one processor 1902 (such as with calculating and the general processor CPU of disposal ability, Digital Signal Processing Device (DSP), application specific integrated circuit (ASIC), ready-made programmable gate array (FPGA) etc.), processor 1902 is used for the first equipment Interior each module and device are managed and dispatched.Processing module 1620 in embodiment shown in Figure 16 can pass through processor 1902 realize.First equipment also includes at least one transceiver 1905 (receiver/transmitter 1905), memory 1906, and At least one bus system 1903.Receiving module 1610 and sending module 1630 in embodiment shown in Figure 16 can pass through receipts Hair device 1905 is realized.Each component of first equipment is coupled by bus system 1903, and wherein bus system 1903 can Data/address bus, power bus, controlling bus and status signal bus in addition etc. can be included, but for the sake of clear explanation, in figure Various buses are all designated as bus system 1903.

The method that above-mentioned the embodiment of the present application discloses can apply to processor 1902, or for performing memory 1906 The executable module of middle storage, such as computer program.Memory 1906 may include high-speed random access memory (RAM: Random Access Memory), it is also possible to also including non-labile memory (non-volatile memory), storage Device can include read-only storage and random access memory, and provide the signaling needed or data, program etc. to processor. The a part of of memory can also include non-volatile row random access memory (NVRAM).Pass through at least one transceiver 1905 (can be wired or wireless) realizes the communication connection between at least one other network element.

In some embodiments, memory 1906 stores program 19061, the configuration processor 19061 of processor 1902, uses Operated below performing:

The first message of the second equipment transmission is received by transceiver 1905;

According to the first message, the target duration of the synchronizing signal is determined;

According to the target duration of the synchronizing signal, the second message is generated, second message includes the synchronizing signal, the synchronization When a length of target duration of signal;

Second message is sent to second equipment by transceiver 1905.

It should be noted that first equipment can be specially the first equipment in the embodiment shown in Figure 16, and can For perform Fig. 6, Figure 13, Figure 14 and Figure 15 shown in embodiment of the method in each step corresponding with the first equipment and/or Flow.

The above technical scheme provided from the embodiment of the present application can be seen that the first equipment and be sent out by receiving the second equipment The first message sent, determine the target duration of synchronizing signal and generate the second message, second message includes synchronizing signal, and should The when a length of target duration for the synchronizing signal that second message includes, then send second message to the second equipment so that second Equipment synchronizes with the first equipment, and the second message that such first equipment is sent to the second equipment has shorter but foot Enough second equipment completes the synchronizing signal of synchronizing function, is wasted so as to reduce media resource, improves media utilization ratio.

Figure 20 shows the structural representation for the second equipment that embodiments herein provides.As shown in figure 20, this second Equipment includes at least one processor 2002 (such as with calculating and the general processor CPU of disposal ability, Digital Signal Processing Device (DSP), application specific integrated circuit (ASIC), ready-made programmable gate array (FPGA) etc.), processor 2002 is used for the second equipment Interior each module and device are managed and dispatched.Processing module 1730 in embodiment shown in Figure 17 can pass through processor 2002 realize.Second equipment also includes at least one transceiver 2005 (receiver/transmitter 2005), memory 2006, and At least one bus system 2003.Receiving module 1720 and sending module 1710 in embodiment shown in Figure 17 can pass through receipts Hair device 2005 is realized.Each component of second equipment is coupled by bus system 2003, and wherein bus system 2003 can Data/address bus, power bus, controlling bus and status signal bus in addition etc. can be included, but for the sake of clear explanation, in figure Various buses are all designated as bus system 2003.

The method that above-mentioned the embodiment of the present application discloses can apply to processor 2002, or for performing memory 2006 The executable module of middle storage, such as computer program.Memory 2006 may include high-speed random access memory (RAM: Random Access Memory), it is also possible to also including non-labile memory (non-volatile memory), storage Device can include read-only storage and random access memory, and provide the signaling needed or data, program etc. to processor. The a part of of memory can also include non-volatile row random access memory (NVRAM).Pass through at least one transceiver 2005 (can be wired or wireless) realizes the communication connection between at least one other network element.

In some embodiments, memory 2006 stores program 20061, the configuration processor 20061 of processor 2002, uses Operated below performing:

First message is sent to the first equipment by transceiver 2005, the first message is used for first equipment and determined synchronously The target duration of signal, and the second message is generated, second message includes the synchronizing signal, when a length of mesh of the synchronizing signal Timestamp is grown;

Second message of first equipment transmission is received by transceiver 2005;

Synchronizing signal of second equipment in second message, is synchronized with first equipment.

It should be noted that second equipment can be specially the second equipment in the embodiment shown in Figure 17, and can For perform Fig. 6, Figure 13, Figure 14 and Figure 15 shown in embodiment of the method in each step corresponding with the second equipment and/or Flow.

The above technical scheme provided from the embodiment of the present application can be seen that the second equipment by sending the to the first equipment One message, so that the first equipment determines the target duration of synchronizing signal according to the first message, and generated according to the target duration Second message, second message include synchronizing signal, and when a length of target duration of synchronizing signal that second message includes, Second message of the first equipment transmission is received again, and synchronizing signal of second equipment in second message is entered with the first equipment Row is synchronous, and the second message that such second equipment receives is to have shorter but enough second equipment to complete synchronizing function Synchronizing signal, wasted so as to reduce media resource, improve media utilization ratio.

The embodiment of the present application also provides a kind of computer-readable storage medium, and the computer-readable storage medium can be stored for indicating The programmed instruction of any of the above-described kind of method.

Alternatively, the storage medium is specifically as follows memory 1906 or 2006.

It should be noted that this application claims the priority of earlier application, this Shen is hereby incorporated by reference in entire contents Please in.The implication of following various terms is identical with foregoing embodiments.

Embodiments of the invention for Wake-up Preamble accounting is larger in WUR frames the problem of, it is proposed that it is a kind of The method for reducing Wake-up Preamble, can shorten WUR frame lengths as far as possible, waste, improve so as to reduce media resource Media utilization ratio.

In one embodiment of the invention:First equipment receives the second equipment and sent by first interface or second interface First message, and synchronizing signal length L is determined based on first message;First equipment generates the second message, is wrapped in the second message Containing the first synchronizing signal, the length of the first synchronizing signal is L;First equipment sends second to the second equipment by first interface and disappeared Breath.The Signalling exchange and handling process of the embodiment are as shown in figure 21.

It should be noted that " the target duration of synchronizing signal " that " synchronizing signal length " here corresponds in above-described embodiment.

The embodiment of the present invention cause the first equipment be sent to the second equipment the second message have it is shorter but enough the Two equipment complete the synchronizing signal of synchronizing function, are wasted so as to reduce media resource, improve media utilization ratio.Work as network In when multiple second equipment be present, the synchronizing signal that the first equipment is sent to the second message of different second equipment is probably different , but the synchronizing signal length L selected must be shorter but to be enough to support that receiving terminal is completed synchronous.

In embodiments of the invention, first interface can be WUR, and correspondingly, the second message can be WUR frames.First disappears Breath can be received by the first interface or second interface of the first equipment, and second interface can be principal communication interface, i.e. WiFi connects Mouth or other high-speed communication interfaces, such as LTE.If the first equipment is without WUR receiving abilities, or the second equipment is without WUR transmitting capacities, then First message can only be transmitted by first interface.

Wherein, the first equipment is the equipment for sending WUR frames, and the second equipment is the equipment for receiving WUR frames.For example, first sets Standby can be AP, such as router, and the second equipment can be STA, such as mobile phone;First equipment can also be STA, such as mobile phone, second Equipment can be wearable device, such as smart mobile phone, bracelet.In some scenes, two equipment may have WUR receipts simultaneously Hair ability, then the role of two equipment depend on current communication scenes.For example, mobile phone and bracelet, both may all possess WUR receipts Hair ability, and have power saving demand, therefore WUR mode of operations can be run on simultaneously, but the wake-up window of other side oneself need to be informed Mouth rule.Specifically, when mobile phone there are data to be sent to bracelet, then wake-up packet is sent to bracelet in the awake window of bracelet, Now, mobile phone is the first equipment, and bracelet is the second equipment;When bracelet has data to be sent to mobile phone, then in the wake-up window of mobile phone Wake-up packet is sent to mobile phone in mouthful, now, bracelet is the first equipment, and mobile phone is the second equipment.

First synchronizing signal is made up of the signal waveform of multiple repetitions.First synchronizing signal length L, can be first synchronous The number of the signal waveform of the repetition included in the time domain length of signal or the first sync waveform.Both essence contains Justice is identical, is all used for the duration for describing the first synchronizing signal.

First message is feedback message, and the first equipment determines then to send WUR according to the feedback message from the second equipment The synchronizing signal length that frame uses when being (the second message).Be sent to the WUR frames of the second equipment synchronizing signal length why It can change, primarily for two aspect reasons:

On the one hand, the most short synchronizing signal length needed for the WUR interface WUR frames of different second equipment may be different 's.Caused by this is due to following reason:

A. ability of the receiver of distinct device itself is variant.For example, the WUR of mobile phone has degree of precision and acceptance Can be, it is necessary to which shorter synchronizing signal can successfully complete synchronization;Sensor (for example, sensor for forest monitoring) is due to needing Want large scale deployment, cost must be cheap, and correspondingly, its WUR precision for being configured is relatively low, it is necessary to longer synchronizing signal ability Complete synchronous.

B. same equipment usage time is longer, due to device aging cause precision to reduce, it is necessary to longer synchronizing signal It can complete synchronous.For example, sensor device is expected work 5-10, so long time, plus adverse circumstances that may be present (for example, forest sensor in monitoring receives wind and weather Exposure to Sunlight), device aging is obvious.

C. with technology development and progress, it is necessary to shorter synchronizing signal can complete synchronizing function.For example, from original 802.11 arrive 802.11b, and synchronizing signal length shortens.

D. the influence of distance and transmission power.The distance of first equipment and the second equipment is shorter, the first equipment sends second The transmission power of message is bigger, and it is smaller that the second equipment completes synchronous required synchronizing signal length;Conversely, distance is bigger, transmitting Power is smaller, and it is longer that the second equipment completes synchronous required synchronizing signal length.

In aforementioned four factor, the ability of receiver in itself is that equipment determines that when dispatching from the factory, same caused by technological progress It is equally that equipment determines that when dispatching from the factory to walk signal length and reduce, therefore can be attributed to receiver self-ability (Capability);Device aging, distance and synchronizing signal length change caused by transmission power change, can be attributed to the The influence of channel between one equipment and the second equipment.

On the other hand, the change of synchronizing signal length will not cause the rising of receiver implementation complexity.Receiver is not Detect that the synchronizing signal repetitive pattern of predefined number is taken as the starting of frame from the signal received, but examine first Predefined repetitive pattern is surveyed, based on detecting that predefined repetitive pattern synchronizes and then detect predefined sequence (i.e. SFD signal), just it is considered the starting of frame.In other words, not to repetitive wave when receiver is synchronized based on synchronizing signal Shape number is counted, and the original position of frame judges to be determined by subsequent SFD.The change of synchronizing signal length is due to wherein to wrap The repetitive pattern number contained is changed, as long as receiving terminal is completed synchronously enough, the change of synchronizing signal length is for receiving The realization at end does not just influence.

Specifically, if the second message is unicast frame, i.e. the second equipment only has one, then the synchronization of the second message Signal length L is solely dependent upon the first message of second equipment feedback;If the second message is multicast frames or broadcast frame, i.e., second sets Have multiple, then need to consider the first message of multiple each self feed backs of second equipment.Specifically, if the expectation of the second message connects Object is received as multiple known determination equipment (for example, the first equipment is AP, the second equipment is multiple STA associated with AP), then The synchronizing signal length L of second message should be according to a consideration most conservative in multiple second equipment, for example, AP is based on three The L that the first message that STA is each sent determines is respectively 30,35,27 (units:Repetitive pattern number), then AP sends second and disappeared The synchronizing signal length of breath should be the maximum 35 of three;It is indefinite (for example, first sets that if the expectation of the second message receives object Standby be AP, and the second equipment, also will not be as AP transmissions first message comprising dereferenced STA, the latter both comprising association STA), then second The synchronizing signal length L of message should be the maximum permissible value of synchronizing signal length, i.e., considers according to most conservative situation.

Embodiment one:First message is explicit feedback messages

Second equipment feeds back oneself desired first synchronizing signal length L0, or feedback by first message to the first equipment Channel condition information of first equipment to the second equipment.In the present embodiment, first message passes through second interface (main radio) Transmission.

Specifically include two kinds of situations:

1) ability of second equipment based on itself first interface (WUR interfaces) determines desired first synchronizing signal length L0, and report to the first equipment.

The receiving ability of WUR interfaces in itself is typically that equipment determines that when dispatching from the factory, therefore can be used as a basic capacity Information is reported to the first equipment.For example, first message is Association Request/Response frame, wherein including Desired first synchronizing signal length L0, i.e. the second equipment reports that the WUR receivers of oneself are desired same in association process Walk signal length L0.Now, first message is transmitted by second interface (i.e. principal communication interface).

After the first equipment receives the first message of the second equipment transmission by second interface, according to the L wherein reported0 Determine synchronizing signal length L.L is not less than L0, preferably L=L0.Then, the second message that L is used on first interface by the first equipment Transmission.

Said process is as shown in figure 21.Pay attention to, for ease of diagram, the second message in Fig. 7 omits that may be present Legacy Preamble.Diagram below uses similar fashion, repeats no more.Figure 22 is the Signalling exchange and place of this programme Manage flow.

2) the second equipment measures to channel, by channel measurement or the L determined based on channel measurement0Pass through First message feeds back to the first equipment.

Before the second equipment sends first message by second interface, the first equipment sends the 3rd to the second equipment and disappeared Breath, so that the second equipment is based on the 3rd message measurement channel, and obtain channel measurement.Then, the second equipment surveys channel Amount result is reported by first message estimates the first interface of oneself based on channel measurement to the first equipment, or the second equipment (WUR interfaces) desired synchronizing signal length L0, and reported by first message to the first equipment.

In the present embodiment, channel measurement can be specifically channel quality information (Channel Quality Information, CQI), channel condition information (Channel State Information, CSI) or signal noise ratio (Signal-Noise Ratio, SNR) etc..In addition, channel measurement can also use the MCS recommended equivalently represented, i.e., second Equipment recommends a MCS in first message, is used when sending message to the second equipment so as to the first equipment.Because MCS is general Have a corresponding relation with channel quality, thus the first equipment can the MCS based on the second equipment recommendation substantially estimate from the first equipment to The substantially channel situation of two equipment, and then determine synchronizing signal length L0.In current 802.11 standard, receiving terminal can be in data frame HT Control domains in MCS that incidentally (piggyback) recommends, reach the purpose of MCS feedback, the present embodiment pushes away using this The MCS estimations L recommended0, so, channel just is measured without special measurement process, can further reduce expense.

If the second equipment reports desired synchronizing signal length L by first message0, then the first equipment is according to L0It is determined that Synchronizing signal length L, as shown in Figure 10, its Signalling exchange and handling process are as shown in figure 23.L is not less than L0, preferably L=L0

If the second equipment reports channel measurement by first message, the first equipment is based on this channel measurement Synchronizing signal length L is determined, as shown in figure 11, its Signalling exchange and handling process are as shown in figure 24.In general, channel quality Better, L is smaller;Channel quality is poorer, and L is bigger.Then, the first equipment by L be used for first interface on the second message transmission.

3rd message can be sent by first interface, i.e. the first equipment sends a WUR frame, and the second equipment is based on this WUR frames measure to channel.

3rd message can also be sent by second interface, now, sent channel used in the 3rd message and (be referred to as first Channel) the follow-up channel (being referred to as second channel) for sending the second message and using should be able to be covered, i.e., second channel is the first channel Subchannel.For example, the 3rd message is sent with 20MHz channels, and the second message is sent out with certain 4MHz channel in the 20MHz channels Send.It should at least be included if the second equipment feedback channel measurement result in first message, in the channel measurement and send the Two message use the measurement result of channel (for example, foregoing 4MHz channels).Certainly, it also can further include whole channel (example Such as, foregoing 20MHz channels) measurement result.

3rd message can be special channel measurement message, and such as NDP Sounding, now, the first equipment is sending the Measurement notification message should be also sent before three message, to notify which STA measures to which channel, (is schemed as shown in figure 11 In eliminate the transmission of subsequent third message), it is noted that there may be before being not drawn into being located at the 3rd message in Figure 10 and Figure 23 Measurement notification message.This method has higher flexibility, and the main channel and WUR channels even if main radio are entirely different It can be used, for example, main radio main channels are channel 1, WUR channels are in channel 2, and two channels are non-overlapping, then the first equipment Measurement announcement information can be sent in channel 1, and the second equipment of instruction then receives NDP Sounding on channel 2, so as to right Channel 2 measures;3rd message can also be other message that main radio are sent, such as the periodically Beacon of transmission Frame, be that need not send special measurement message the advantages of this method, thus expense hand over it is small, but because main radio transmission is necessary Using main channel, if WUR channels and main radio main channel no overlaps, this method are likely difficult to use.

When the second equipment is by first message feedback channel measurement result, first message should be management frame, wherein carrying Channel measurement.And desired synchronizing signal length L is fed back by first message for the second equipment in the present embodiment0Feelings Condition, first message equally can be management frames, wherein comprising special definition be used for carry synchronizing signal length L0Information word Plain (Information Element, IE), synchronizing signal IE as shown in Figure 8;First message can also be data frame or control Frame, L is carried in the control domain of these frames by way of incidentally (piggyback)0, for example, utilizing 802.11n/ac/ax numbers According to the HT/VHT/HE Control domains in frame or QoS Control domains, or Frame Control domains of control frame etc., to carry The desired synchronizing signal length L of second equipment0.Fig. 9 is the Frame Control using control frame (such as RTS/CTS/ACK) Reserved bit in domain carries L0Example, wherein, the bit that value is 0 is reserved bit, available for carrying L0

It should be noted that either the second equipment determines L based on channel measurement0When, or in the first equipment base When the channel measurement of the second equipment feedback determines L, it may all need to consider the WUR receiving abilities of the second equipment.For example, The synchronizing signal length determined based on channel measurement is L1, the synchronous letter of the WUR receiving abilities determination based on the second equipment Number length is L2, then the L that finally determines0Or L should take larger in both one, i.e. max { L1,L2}。

Explicit feedback advantage is there is higher accuracy.Because the synchronizing signal length of WUR frames mainly influences to receive The receptivity at end, and WUR frames be by the first equipment send, the second equipment receive, therefore fed back by the second equipment itself Receiving ability and the first equipment determine that the synchronous of WUR frames is believed to the measurement result of channel between the second equipment for the first equipment All it is most directly and most accurate for number length.The major defect of the present embodiment is to measure and the expense of feedback procedure is omited Greatly.

Embodiment two:First message is implicit feedback message

So-called implicit feedback, i.e., according to channel reciprocity, it is assumed that the channel quality between the first equipment and the second equipment exists It is roughly the same in both direction, therefore the second equipment to the measurement result of the channel of the first equipment is considered as the first equipment to The channel measurement of two equipment.Now, channel measurement message (i.e. first message) is sent by the second equipment, and the first equipment is based on This is measured to channel, and based on channel measurement estimation synchronizing signal length L.As shown in figure 12.The channel measurement knot Fruit can be specifically letter CQI or CSI etc..Figure 25 is the Signalling exchange and handling process of the present embodiment.

The 3rd message in first message similar embodiment one in the present embodiment, receiving terminal are entered based on the message to channel Row measurement.Similar, first message can be sent by first interface (WUR), can also pass through second interface (main Radio) send.Often do not possess WUR emissivities in view of the second equipment, therefore disappear it is preferred that sending first by second interface Breath.Now, channel used in the first message sent in second interface (is referred to as the 3rd channel), supervention after should be able to covering Channel used in the second message (being referred to as second channel) is sent, i.e., second channel is the subchannel of the 3rd channel.For example, first disappears Breath is sent with 20MHz channels, and the second message is sent with certain 4MHz channel in the 20MHz channels.First message can be special The channel measurement message of door, such as NDP Sounding;Can also be other frames, such as the second equipment is sent to the number of the first equipment According to frame, management frame or control frame.

Similar embodiment one, it should be noted that in the channel that the first equipment is obtained based on the measurement to first message When measurement result determines L, it may be necessary to consider the WUR receiving abilities of the second equipment, and the ability to accept of the second equipment is probably Feed back, such as fed back using the Association Request/Response frames in association process in advance.

For example, it is L based on the synchronizing signal length that channel measurement determines1, the WUR receiving abilities based on the second equipment The synchronizing signal length of determination is L2, then the L that finally determines0Or L should take larger in both one, i.e. max { L1,L2}。

The advantages of implicit feedback, is that expense is smaller, only needs a channel measurement message;Shortcoming is to utilize reversely letter The equivalent forward channel of channel quality (channel of first equipment to the second equipment) in road (channel of second equipment to the first equipment) Channel quality, be probably in some cases it is not accurate enough, this be possible to influence the first equipment determine L accuracy, And then influence the performance that the second equipment receives the second message.

Embodiment three

, can be to be used to perform above method embodiment in above-described embodiment the embodiments of the invention provide a kind of first equipment In corresponding with the first equipment each step and/or flow.Concrete structure can be as shown in figure 26 the first equipment structure, its Corresponding first equipment of middle module 300.For the first equipment 300, it includes submodule 301,302,303,304 and 305.First sets It is standby that the first message of second equipment transmission is received by first interface 301 or second interface 302, and be based in processor 303 First message determines synchronizing sequence length L;Processor 303 generates the second message, and the first synchronizing signal is included in the second message, the The length of one synchronizing signal is L;Second message is sent to the second equipment by the first equipment by first interface 301.In Figure 26, son 301 corresponding first interface of module, can be provided by WUR.Corresponding the second transceiver for being waken up equipment of submodule 302, i.e., second Interface, it can be provided by main radio (for example, 802.11main radio).The alignment processing device of submodule 303 (can be one It is individual or multiple), it is possible to achieve it is foregoing that L is determined according to first message and generates the function of the second message, i.e., in claim 7 Determining unit and generation unit can be realized by processor 303.304 corresponding memory of submodule (can be one or more). Submodule 303 and submodule 304 can be that first interface and second interface are shared.

During Figure 26 is exemplified, first interface 301 and second interface 302 can share same root antenna sub-module 305, mainly Simply consider for reducing device hardware cost and realizing.First interface 301 and second interface 302 can also correspond to different Antenna, particularly when both, which are operated in different frequency range, carries, for example, both work in 2.4GHz frequency ranges and 5GHz frequencies respectively Section.In actual product, the first equipment 300 can be realized or integrated by an on-chip system (System on a Chip, SoC) Circuit realiration.

The embodiment of the present application can shorten WUR frame lengths so that the WUR that AP issues each user has most short synchronous letter Number, wasted so as to reduce, improve system effectiveness;And synchronizing sequence length can be adjusted according to distance, transmission power, reduce Remotely third party STA receives the probability of WUR frames, and so as to improve the security of WUR transmission, this is special for wearable device It is significant.

In addition, it is the embodiment described in 13-22 that the embodiment of the present invention, which additionally provides following numbering, the numbering is only for side Just, and from 13 it is numbered, do not necessarily represent has specific relation between the numbering of embodiment that is above provided, implements Example 13-22 is specific as follows:

13rd, the first equipment according to embodiment 12, it is characterised in that the first message carries the synchronizing signal Expectation duration, the expectation duration represents that second equipment completes required synchronizing signal synchronous with first equipment Duration;

The processing module is specifically used for:

According to the expectation duration, the target duration is determined, the target duration is more than or equal to the expectation duration.

14th, the first equipment according to embodiment 13, it is characterised in that the sending module is additionally operable in the first channel The 3rd message is sent to second equipment, so that second equipment measures first channel according to the 3rd message Channel quality is to generate the channel quality measurements of first channel, and according to the channel quality measurement of first channel As a result the expectation duration is determined.

15th, the first equipment according to embodiment 12, it is characterised in that the receiving module is additionally operable to described first and set The standby first message that the second equipment transmission is received in the first channel;

The processing module is specifically used for:

According to the first message, measure the channel quality of first channel and generate the channel matter of first channel Measurements;

According to the channel quality measurements of first channel, the target duration is determined.

16th, the first equipment according to embodiment 12, it is characterised in that the sending module is additionally operable in the first channel The 3rd message is sent to second equipment, the 3rd message is used for the channel of the first channel described in second device measuring Quality and the channel quality measurements for generating first channel;

The first message carries the channel quality measurements of first channel;

The processing module is specifically used for:

According to the channel quality measurements of first channel, the target duration is determined.

17th, the first equipment according to embodiment 15 or 16, it is characterised in that the receiving module is additionally operable to receive institute The receiving ability information of the second equipment transmission is stated, the receiving ability information represents that second equipment receives connecing for the second message Receipts ability;

The processing module is specifically used for:

According to the channel quality measurements of first channel and the receiving ability information, when determining the target It is long.

18th, the first equipment according to any one of embodiment 14 to 16, it is characterised in that first channel includes At least one subchannel;

The sending module is specifically used for:

In at least one subchannel in first channel second message is sent to second equipment.

19th, a kind of second equipment, it is characterised in that including:

Sending module, for sending first message to the first equipment, the first message determines for first equipment The target duration of synchronizing signal, and the second message is generated, second message includes the synchronizing signal, the synchronizing signal Target duration described in Shi Changwei;

Receiving module, second message sent for receiving first equipment;

Processing module, for the synchronizing signal in second message, synchronized with first equipment.

20th, the second equipment according to embodiment 19, it is characterised in that the processing module is additionally operable to determine described same Walk the expectation duration of signal, described it is expected that duration represents that second equipment is completed synchronous with first equipment required same Walk the duration of signal;

The sending module is specifically used for:

Sent to first equipment and carry the first message for it is expected duration.

21st, the second equipment according to embodiment 20, it is characterised in that the receiving module is additionally operable to the second equipment and connect The 3rd message is received, the 3rd message is used for the channel quality for measuring the first channel;

The processing module is additionally operable to, according to the 3rd message, determine the channel quality measurement knot of first channel Fruit;

The processing module is specifically used for:

According to the channel quality measurements of first channel, the expectation duration is determined.

22nd, the second equipment according to embodiment 19, it is characterised in that the receiving module is additionally operable to reception the 3rd and disappeared Breath, the 3rd message are used for the channel quality for measuring the first channel;

The processing module is additionally operable to, according to the 3rd message, determine the channel quality measurement knot of first channel Fruit;

The processing module is specifically used for:

The first message for the channel quality measurements for carrying first channel is sent to first equipment.

It should be understood that the specific example in the application is intended merely to help those skilled in the art to more fully understand the application Embodiment, and the scope of unrestricted the embodiment of the present application.

It should be understood that the terms "and/or", only a kind of incidence relation for describing affiliated partner, expression can deposit In three kinds of relations, for example, A and/or B, can be represented:Individualism A, while A and B be present, these three situations of individualism B. In addition, character "/" herein, it is a kind of relation of "or" to typically represent forward-backward correlation object.

It should be understood that in the various embodiments of the application, the size of the sequence number of above-mentioned each process is not meant to perform suitable The priority of sequence, the execution sequence of each process should be determined with its function and internal logic, without the implementation of reply the embodiment of the present application Process forms any restriction.

Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein Member and algorithm steps, it can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually Performed with hardware or software mode, application-specific and design constraint depending on technical scheme.Professional and technical personnel Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed Scope of the present application.

It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific work process of device and unit, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.

In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, can be with Realize by another way.For example, device embodiment described above is only schematical, for example, the unit is drawn Point, only a kind of division of logic function, there can be other dividing mode when actually realizing, such as multiple units or component can To combine or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, it is shown or beg for The mutual coupling of opinion or direct-coupling or communication connection can be the INDIRECT COUPLINGs by some interfaces, device or unit Or communication connection, can be electrical, mechanical or other forms.

The unit illustrated as separating component can be or may not be physically separate, show as unit The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs 's.

In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, can also That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.

If the integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or use When, it can be stored in a computer read/write memory medium.Based on such understanding, the technical scheme of the application is substantially The part to be contributed in other words to prior art or the part of the technical scheme can be embodied in the form of software product Come, the computer software product is stored in a storage medium, including some instructions are make it that a computer equipment (can To be personal computer, server, or network equipment etc.) perform all or part of each embodiment methods described of the application Step.And foregoing storage medium includes:It is USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), random Access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with Jie of store program codes Matter.

Described above, the only embodiment of the application, but the protection domain of the application is not limited thereto is any Those familiar with the art can readily occur in change or replacement in the technical scope that the application discloses, and should all contain Cover within the protection domain of the application.Therefore, the protection domain of the application should be defined by the scope of the claims.

Claims (13)

  1. A kind of 1. method of signal transacting, it is characterised in that including:
    First equipment receives the first message that the second equipment is sent;
    First equipment determines the target duration of synchronizing signal according to the first message;
    First equipment generates the second message, second message includes the synchronizing signal, institute according to the target duration State when a length of target duration of synchronizing signal;
    First equipment sends second message to second equipment.
  2. 2. according to the method for claim 1, it is characterised in that when the first message carries the expectation of the synchronizing signal It is long, it is described it is expected that duration represents that second equipment completes the duration of required synchronizing signal synchronous with first equipment;
    Wherein, according to the first message, determine the target duration of synchronizing signal includes first equipment:
    First equipment determines the target duration, the target duration is more than or equal to the phase according to the expectation duration Hope duration.
  3. 3. according to the method for claim 2, it is characterised in that receive what second equipment was sent in first equipment Before the first message, methods described also includes:
    First equipment sends the 3rd message in the first channel to second equipment, so that second equipment is according to 3rd message measures the channel quality of first channel to generate the channel quality measurements of first channel, and according to The channel quality measurements of first channel determine the expectation duration.
  4. 4. according to the method for claim 1, it is characterised in that first equipment receives first that the second equipment is sent and disappeared Breath includes:
    First equipment receives the first message of the second equipment transmission in the first channel;
    Wherein, according to the first message, determine the target duration of synchronizing signal includes first equipment:
    First equipment measures the channel quality of first channel and generates first channel according to the first message Channel quality measurements;
    First equipment determines the target duration according to the channel quality measurements of first channel.
  5. 5. according to the method for claim 1, it is characterised in that receive what second equipment was sent in first equipment Before the first message, methods described also includes:
    First equipment sends the 3rd message in the first channel to second equipment, and the 3rd message is used for described second The channel quality of first channel described in device measuring and the channel quality measurements for generating first channel;
    The first message carries the channel quality measurements of first channel;
    Wherein, according to the first message, determine the target duration of synchronizing signal includes first equipment:
    First equipment determines the target duration according to the channel quality measurements of first channel.
  6. 6. the method according to claim 4 or 5, it is characterised in that receive the second equipment hair in first equipment Before the first message sent, methods described also includes:
    First equipment receives the receiving ability information that second equipment is sent, and the receiving ability information represents described the Two equipment receive the receiving ability of the second message;
    Wherein, first equipment is according to the channel quality measurements of first channel, when determining the target of synchronizing signal Length includes:
    Channel quality measurements and the receiving ability information of first equipment according to first channel, it is determined that described Target duration.
  7. 7. the method according to any one of claim 3 to 5, it is characterised in that first channel includes at least one Subchannel;
    Wherein, first equipment sends second message to second equipment and included:
    First equipment sends described second at least one subchannel in first channel to second equipment Message.
  8. A kind of 8. method of signal transacting, it is characterised in that including:
    Second equipment sends first message to the first equipment, and the first message determines synchronizing signal for first equipment Target duration, and generate the second message, second message includes the synchronizing signal, the synchronizing signal when it is a length of described in Target duration;
    Second equipment receives second message that first equipment is sent;
    Synchronizing signal of second equipment in second message, is synchronized with first equipment.
  9. 9. according to the method for claim 8, it is characterised in that methods described also includes:
    Second equipment determines the expectation duration of synchronizing signal, the expectation duration represent second equipment complete with it is described The duration of the required synchronizing signal of the synchronization of first equipment;
    Wherein, second equipment sends first message to the first equipment and included:
    Second equipment is sent to first equipment carries the first message for it is expected duration.
  10. 10. according to the method for claim 9, it is characterised in that methods described also includes:
    Second equipment receives the 3rd message, and the 3rd message is used for the channel quality for measuring the first channel;
    Second equipment determines the channel quality measurements of first channel according to the 3rd message;
    Wherein, second equipment determines that the expectation duration of the synchronizing signal includes:
    Second equipment determines the expectation duration according to the channel quality measurements of first channel.
  11. 11. according to the method for claim 8, it is characterised in that methods described also includes:
    Second equipment receives the 3rd message, and the 3rd message is used for the channel quality for measuring the first channel;
    Second equipment determines the channel quality measurements of first channel according to the 3rd message;
    Wherein, second equipment sends first message to the first equipment and included:
    Second equipment sends described the of the channel quality measurements that carry first channel to first equipment One message.
  12. A kind of 12. first equipment, it is characterised in that including:
    Receiving module, the first message sent for receiving the second equipment;
    Processing module, for the first message received according to the receiving module, determine the target duration of synchronizing signal;
    The processing module, the target duration determined according to the processing module is additionally operable to, generates the second message, described the Two message include the synchronizing signal, when a length of target duration of the synchronizing signal;
    Sending module, for sending second message of the processing module generation to second equipment.
  13. A kind of 13. second equipment, it is characterised in that including:
    Sending module, for sending first message to the first equipment, the first message is used for first equipment and determined synchronously The target duration of signal, and the second message is generated, second message includes the synchronizing signal, the duration of the synchronizing signal For the target duration;
    Receiving module, second message sent for receiving first equipment;
    Processing module, for the synchronizing signal in second message, synchronized with first equipment.
CN201611026905.1A 2016-08-26 2016-11-16 The method and apparatus of signal transacting CN107800526A (en)

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CN201610740694 2016-08-26
CN2016107406941 2016-08-26
CN2016107767780 2016-08-30
CN201610776778 2016-08-30

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710702494.1A CN108123784A (en) 2016-08-26 2017-08-16 The method and apparatus of signal processing
PCT/CN2017/103970 WO2018090741A1 (en) 2016-11-16 2017-09-28 Signal processing method and device

Publications (1)

Publication Number Publication Date
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109155972A (en) * 2018-08-13 2019-01-04 北京小米移动软件有限公司 Awakening method, Rouser, electronic equipment and computer readable storage medium
WO2019194855A1 (en) * 2018-04-03 2019-10-10 Marvell World Trade Ltd. Wakeup radio (wur) packet preamble design
US10548082B2 (en) 2017-05-26 2020-01-28 Marvell World Trade Ltd. Wakeup radio (WUR) preamble design
US10701632B2 (en) 2017-07-18 2020-06-30 Marvell International Ltd. Wakeup packet modulation and demodulation
US10764826B2 (en) 2017-04-25 2020-09-01 Nxp Usa, Inc. Low power wakeup in a wireless network
US10764855B1 (en) 2018-02-26 2020-09-01 Marvell Asia Pte, Ltd. Synchronizing clocks in a wireless network
US10764828B2 (en) 2017-10-19 2020-09-01 Nxp Usa, Inc. Wakeup radio (WUR) packet multi-format design
US10873909B1 (en) 2019-05-08 2020-12-22 Marvell Asia Pte, Ltd. Frequency division multiple access (FDMA) support for wakeup radio (WUR) operation

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10764826B2 (en) 2017-04-25 2020-09-01 Nxp Usa, Inc. Low power wakeup in a wireless network
US10548082B2 (en) 2017-05-26 2020-01-28 Marvell World Trade Ltd. Wakeup radio (WUR) preamble design
US10701632B2 (en) 2017-07-18 2020-06-30 Marvell International Ltd. Wakeup packet modulation and demodulation
US10764828B2 (en) 2017-10-19 2020-09-01 Nxp Usa, Inc. Wakeup radio (WUR) packet multi-format design
US10764855B1 (en) 2018-02-26 2020-09-01 Marvell Asia Pte, Ltd. Synchronizing clocks in a wireless network
WO2019194855A1 (en) * 2018-04-03 2019-10-10 Marvell World Trade Ltd. Wakeup radio (wur) packet preamble design
US10772056B2 (en) 2018-04-03 2020-09-08 Marvell Asia Pte, Ltd. Wakeup radio (WUR) packet preamble design
CN109155972A (en) * 2018-08-13 2019-01-04 北京小米移动软件有限公司 Awakening method, Rouser, electronic equipment and computer readable storage medium
US10887837B1 (en) 2018-10-16 2021-01-05 Marvell Asia Pte, Ltd. Wakeup radio packet with neighbor access point information
US10873909B1 (en) 2019-05-08 2020-12-22 Marvell Asia Pte, Ltd. Frequency division multiple access (FDMA) support for wakeup radio (WUR) operation

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Application publication date: 20180313