CN108668342B - Data transmission method and device - Google Patents

Data transmission method and device Download PDF

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Publication number
CN108668342B
CN108668342B CN201710193015.8A CN201710193015A CN108668342B CN 108668342 B CN108668342 B CN 108668342B CN 201710193015 A CN201710193015 A CN 201710193015A CN 108668342 B CN108668342 B CN 108668342B
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frame
time period
beacon frame
network device
sending
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CN108668342A (en
Inventor
李云波
王莹
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201710193015.8A priority Critical patent/CN108668342B/en
Priority to PCT/CN2018/080590 priority patent/WO2018177266A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
    • H04W74/0841—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment
    • H04W74/085—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment collision avoidance
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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

Abstract

The application provides a method and a device for data transmission, wherein the method comprises the following steps: the method comprises the steps that network equipment determines that a first wakeup frame to be sent exists in a first time period, the first wakeup frame is used for waking up first terminal equipment, the first time period comprises a preset first sending moment of a beacon frame, the beacon frame is sent periodically, the duration of the first time period is greater than or equal to 0 and smaller than the sending period of the beacon frame, and when the duration of the first time period is equal to 0, the first time period is the first sending moment; the network device transmits the first wake-up frame in place of transmitting the beacon frame. The data transmission method and device provided by the embodiment of the application can reduce the overhead of the beacon frame.

Description

Data transmission method and device
Technical Field
The present application relates to the field of communications, and more particularly, to a method and apparatus for data transmission in the field of communications.
Background
With the increasing diversification of mobile applications and the continuous development of mobile terminals, a large number of mobile terminals powered by batteries appear, and reducing the energy consumption of the mobile terminals becomes one of the important technologies of future wireless networks. Wake-up radio (WUR) technology is a technology for reducing power consumption and cost of a terminal, in a WUR system, a mobile terminal can intelligently select an appropriate time to enter a power saving mode, namely, a main radio of the mobile terminal is turned off, the terminal is enabled to work in a narrowband mode, a narrowband signal can be continuously intercepted when the main radio is turned off, and the main radio is turned on by the terminal once a wake-up packet (WUP) sent by a network device is received.
In the WUR system, a network device needs to periodically transmit a beacon frame so that a mobile terminal associated with the network device knows that the network device is in an operating state. In addition, the mobile terminal not associated with the network device can also sense the existence of the network device through the beacon frame. However, the network device may occupy a large amount of air interface resources for periodically transmitting the beacon frame, i.e., the overhead of the beacon frame is relatively large.
In the existing WUR, when a network device sends a wakeup frame to a mobile terminal, other mobile terminals may use the wakeup frame as a beacon frame, and when the network device sends another wakeup frame to another mobile terminal, other terminals may use the another wakeup frame as a beacon frame, and until the network device determines that the wakeup frame is not sent to any mobile terminal in a preset time period, the beacon frame is sent to all the mobile terminals in a broadcast manner, so as to reduce overhead of the beacon frame.
Disclosure of Invention
The application provides a data transmission method and device, which can reduce the overhead of a beacon frame.
In a first aspect, the present application provides a method for data transmission, where the method includes:
the method comprises the steps that network equipment determines that a first wakeup frame to be sent exists in a first time period, the first wakeup frame is used for waking up first terminal equipment, the first time period comprises a preset first sending moment of a beacon frame, the beacon frame is sent periodically, the duration of the first time period is greater than or equal to 0 and smaller than the sending period of the beacon frame, and when the duration of the first time period is equal to 0, the first time period is the first sending moment;
the network device sends the first wake-up frame instead of sending the beacon frame.
Optionally, the first time period in this embodiment of the application may be at least one time period, the first sending time may be at least one sending time, the first wakeup frame may be at least one wakeup frame, when the first sending time is multiple sending times, the multiple sending times may be multiple sending times in continuous cycles or multiple sending times in discontinuous cycles, the multiple time periods may be understood as time periods corresponding to each sending time in the multiple sending times, and the multiple wakeup frames may be understood as wakeup frames to be sent in each time period, which is not limited in this embodiment of the application.
Optionally, the time lengths of the time periods corresponding to each of the multiple sending moments may be equal or different, and this is not limited in this embodiment of the application.
It should be understood that the time period corresponding to the sending time may be understood as a time period at least including the sending time, that is, the duration of the time period is greater than or equal to 0.
It should also be understood that, when the duration of the time period is equal to 0, the time period is the sending time; when the duration of the time period is greater than 0, the duration between the starting time and the ending time of the time period includes the sending time, or the starting time of the time period is the sending time, or the ending time of the time period is the sending time.
Optionally, the beacon frame in this embodiment may be sent in a unicast, multicast, or broadcast form, which is not limited in this embodiment.
In the data transmission method provided in the embodiment of the present application, a network device determines that a first wakeup frame to be sent exists in a first time period, where the first time period includes a preset first sending time of a beacon frame, the beacon frame is sent periodically, a duration of the first time period is greater than or equal to 0 and less than a sending period of the beacon frame, and the network device sends the first wakeup frame instead of sending the beacon frame, so that overhead of the beacon frame can be reduced.
It should be understood that the network device transmits the first wake-up frame instead of transmitting the beacon frame, so that the network device does not need to transmit the beacon frame at the transmission time, and accordingly, other terminal devices except the first terminal device can use the first wake-up frame as the beacon frame, and therefore, the overhead of the beacon frame can be reduced.
In addition, if the network device determines that the wakeup frame to be sent exists in the time period corresponding to each sending time of the beacon frame and sends the wakeup frame instead of the beacon frame, the network device can ensure that the terminal device obtains the beacon frame in the period of each beacon frame while reducing the overhead of the beacon frame, so that the WUR system of the terminal device can sleep periodically, and the energy consumption of the terminal device can be further reduced.
In a possible implementation manner, the first wakeup frame carries synchronization information, and the synchronization information is used for time synchronization or frequency synchronization.
As an optional embodiment, the first wake-up frame may carry a synchronization information field, where the synchronization information field is used to indicate time domain information or frequency information of the network device, so that the terminal device performs time synchronization or frequency synchronization with the network device according to the synchronization information field.
In another possible implementation manner, the sending, by the network device, the first wake-up frame includes: and the network equipment sends the first awakening frame at a first sending rate, wherein the first sending rate is smaller than a preset rate threshold.
According to the data transmission method provided by the embodiment of the application, the network device reduces the sending rate of the first wakeup frame to be low enough, so that more terminal devices can sense the first wakeup frame, the first wakeup frame can be correctly analyzed, and the first wakeup frame is used as the beacon frame.
In yet another possible implementation manner, before the network device sends the first wake-up frame, the method further includes: and the network equipment sends an interception notification message to second terminal equipment, wherein the interception notification message is used for indicating the second terminal equipment to intercept the beacon frame in the first time period.
Optionally, in the embodiment of the present application, a manner in which the network device and the second terminal device obtain the information of the first time period is not limited.
As an optional embodiment, the network device and the second terminal device may agree in advance with a start frame and a transmission period of beacon frame transmission, and determine a first time period in which each transmission time of the beacon frame is located according to the start frame and the transmission period.
As another alternative, the network device may carry start frame information, listening period information, and listening duration information of beacon frame transmission in the listening notification message.
In yet another possible implementation, the network device communicates with a terminal device operating on each of the frequency-domain channels through a plurality of frequency-domain channels, the first wakeup frame is sent on a first frequency-domain channel, and the plurality of frequency-domain channels includes the first frequency-domain channel, and the method further includes: the network device determines that a second wake-up frame to be sent does not exist in the first time period, where the second wake-up frame is used to wake up a third terminal device, the third terminal device operates on a second frequency domain channel, the plurality of frequency domain channels include the second frequency domain channel, and the second frequency domain channel is different from the first frequency domain channel; the network device transmits the beacon frame on the second frequency domain channel while the network device transmits the first wakeup frame on the first frequency domain channel.
It should be understood that the network device may communicate with the terminal device operating on each of the plurality of frequency domain channels, the WUR system is usually operated on a narrow band to save power, and the network device needs to have a 20MHz preamble sequence at the beginning of the wake-up frame transmission, so that once the network device transmits the wake-up frame on one of the plurality of frequency domain channels, the other frequency domain channels are not used for transmitting other data, i.e. are in an idle state, even though the wake-up frame is not transmitted.
In the data transmission method provided in the embodiment of the present application, when the network device determines that a first wakeup frame to be sent on a first frequency domain channel exists in a first time period and a second wakeup frame to be sent on a second frequency domain channel does not exist, the network device sends a beacon frame on the second frequency domain channel while sending the first wakeup frame on the first frequency domain channel, so that frequency domain bandwidth can be fully utilized, and the utilization rate of system resources is improved.
In a second aspect, the present application provides a method for data transmission, including:
the method comprises the steps that a terminal device monitors a beacon frame sent by a network device in a first time period, wherein the first time period comprises a preset first receiving time of the beacon frame, the beacon frame is sent periodically, the duration of the first time period is greater than or equal to 0 and smaller than the receiving period of the beacon frame, and when the duration of the first time period is equal to 0, the first time period is the first receiving time;
and if the terminal equipment monitors the awakening frame sent by the network equipment in the first time period, and the awakening frame is used for awakening other terminal equipment, the terminal equipment takes the awakening frame as the beacon frame.
Optionally, the first time period in this embodiment may be at least one time period, and the first receiving time may be at least one receiving time.
As an alternative embodiment, the first receiving time may be any one of the receiving times at which the beacon frame is periodically transmitted, the first time period may be a time period at least including the first receiving time, and the duration of the first time period is less than the receiving period.
As another optional embodiment, when the first receiving time may be multiple receiving times, the multiple receiving times may be multiple receiving times of continuous cycles or multiple receiving times of discontinuous cycles, the multiple time periods may be understood as time periods corresponding to each of the multiple receiving times in a one-to-one manner, and the multiple wakeup frames may be understood as wakeup frames to be received in each time period, which is not limited in this embodiment of the present application.
Optionally, the time lengths of the time periods corresponding to each of the multiple receiving moments may be equal or different, which is not limited in this embodiment of the application.
It should be understood that the time period corresponding to the receiving time may be understood as a time period at least including the receiving time, that is, the duration of the time period is greater than or equal to 0.
It should also be understood that when the duration of the time period is equal to 0, the time period is the receiving time; when the duration of the time period is greater than 0, the duration between the starting time and the ending time of the time period includes the receiving time, or the starting time of the time period is the receiving time, or the ending time of the time period is the receiving time.
Optionally, the beacon frame in this embodiment may be received in a unicast, multicast, or broadcast form, which is not limited in this embodiment.
In one possible implementation, before the terminal device listens for a beacon frame transmitted by a network device within a first time period, the method further includes: the terminal device receives an interception notification message sent by the network device, wherein the interception notification message is used for notifying the terminal device to intercept the beacon frame in the first time period; the method for the terminal device to listen to the beacon frame sent by the network device in the first time period includes: and the terminal equipment monitors the beacon frame in the first time period according to the monitoring notification message.
In another possible implementation manner, the wake-up frame carries synchronization information, and the synchronization information is used for time synchronization or frequency synchronization.
According to the data transmission method provided by the embodiment of the application, if the terminal device senses the wakeup frame sent by the network device to other terminal devices in the first time period, the terminal device takes the wakeup frame as the beacon frame, so that the overhead of the beacon frame can be reduced.
In addition, if the terminal device uses the received wakeup frame as the beacon frame in the time period corresponding to each receiving time of the beacon frame, the overhead of the beacon frame is reduced, and meanwhile, the terminal device can be ensured to obtain the beacon frame in the period of each beacon frame, so that the WUR system of the terminal device can sleep periodically, and the energy consumption of the terminal device can be further reduced.
Optionally, if the terminal device monitors a wakeup frame sent by the network device in a first time period, the terminal device uses the wakeup frame as a beacon frame, and synchronizes with the network device according to the wakeup frame; and if the terminal equipment monitors the beacon frame sent by the network equipment in the first time period, the terminal equipment synchronizes with the network equipment according to the beacon frame.
In a third aspect, the present application provides a method for data transmission, including:
the method comprises the steps that network equipment determines that the duration of a transmission opportunity obtained in advance is remained in a first time period, wherein the first time period comprises the sending time of a preset beacon frame, the beacon frame is sent periodically, and the duration of the first time period is greater than or equal to 0 and is less than the sending period of the beacon frame;
the network device transmits the beacon frame for the duration of the transmission opportunity remaining.
It should be understood that transmission opportunity (TXOP) is a period in a Wireless Local Area Network (WLAN) system, and a network device obtains a transmission right of a channel through contention, where the transmission right enables the network device to obtain a right to transmit data to a mobile terminal within a reserved period. During the reserved time period, other mobile terminals will keep silent, and therefore, interference to the mobile terminal or transmission collision with the mobile terminal will not be caused. The TXOP period usually has an upper limit of a time length, e.g., 3 ms.
According to the data transmission method provided by the embodiment of the application, when the reserved time period obtained by the network equipment through the TXOP is still remained, the network equipment can send the beacon frame to the terminal equipment within the remained time period of the TXOP, so that the situation that the data sending right is obtained by re-passing the channel competition at the sending time of the preset beacon frame is avoided, the expense of the channel competition is reduced, and the probability of transmission collision is reduced.
In a fourth aspect, the present application provides another data transmission method, including:
the method comprises the steps that terminal equipment determines that the time length of a transmission opportunity pre-allocated by network equipment is remained in a first time period, the first time period comprises the sending time of a preset beacon frame, the beacon frame is sent periodically, and the time length of the first time period is greater than or equal to 0 and is less than the sending period of the beacon frame;
the terminal device receives the beacon frame for the duration of the remaining transmission opportunity.
In a fifth aspect, the present application provides an apparatus for data transmission, configured to perform the method in the first aspect or any possible implementation manner of the first aspect. In particular, the apparatus comprises means for performing the method of the first aspect described above or any possible implementation manner of the first aspect.
In a sixth aspect, the present application provides another apparatus for data transmission, configured to perform the method of the second aspect or any possible implementation manner of the second aspect. In particular, the apparatus comprises means for performing the method of the second aspect described above or any possible implementation of the second aspect.
In a seventh aspect, the present application provides a further apparatus for data transmission, configured to perform the method in the third aspect or any possible implementation manner of the third aspect. In particular, the apparatus comprises means for performing the method of the third aspect or any possible implementation manner of the third aspect.
In an eighth aspect, the present application provides a further apparatus for data transmission, configured to perform the method in the fourth aspect or any possible implementation manner of the fourth aspect. In particular, the apparatus comprises means for performing the method of the fourth aspect described above or any possible implementation manner of the fourth aspect.
In a ninth aspect, the present application provides a further apparatus for data transmission, the apparatus comprising: a processor, a memory, and a transceiver. Wherein the processor, the memory and the transceiver are all in communication with each other via an internal connection path, the memory is configured to store computer-executable instructions, and the processor is configured to execute the computer-executable instructions stored by the memory, such that the apparatus can perform the method of the first aspect or any possible implementation manner of the first aspect by data interaction with other apparatuses via the transceiver.
In a tenth aspect, the present application provides a further apparatus for data transmission, the apparatus comprising: a processor, a memory, and a transceiver. Wherein the processor, the memory and the transceiver are all in communication with each other via an internal connection path, the memory is configured to store computer-executable instructions, and the processor is configured to execute the computer-executable instructions stored by the memory, such that the apparatus can perform the method of the second aspect or any possible implementation manner of the second aspect by data interaction with other apparatuses via the transceiver.
In an eleventh aspect, the present application provides yet another apparatus for data transmission, the apparatus comprising: a processor, a memory, and a transceiver. Wherein the processor, the memory and the transceiver are all in communication with each other via an internal connection path, the memory is configured to store computer-executable instructions, and the processor is configured to execute the computer-executable instructions stored by the memory, such that the apparatus can perform the method of the third aspect or any possible implementation manner of the third aspect by data interaction with other apparatuses via the transceiver.
In a twelfth aspect, the present application provides yet another apparatus for data transmission, the apparatus comprising: a processor, a memory, and a transceiver. Wherein the processor, the memory and the transceiver are all in communication with each other via an internal connection path, the memory is configured to store computer-executable instructions, and the processor is configured to execute the computer-executable instructions stored by the memory, such that the apparatus can perform the method of the fourth aspect or any possible implementation manner of the fourth aspect by data interaction with other apparatuses via the transceiver.
In a thirteenth aspect, the present application provides a computer-readable medium for storing a computer program comprising instructions for performing the method of the first aspect or any possible implementation manner of the first aspect.
In a fourteenth aspect, the present application provides another computer-readable medium for storing a computer program comprising instructions for performing the method of the second aspect or any possible implementation of the second aspect.
In a fifteenth aspect, the present application provides a further computer-readable medium for storing a computer program comprising instructions for carrying out the method of the third aspect or any possible implementation of the third aspect.
In a sixteenth aspect, the present application provides a further computer readable medium for storing a computer program comprising instructions for performing the method of the fourth aspect or any possible implementation manner of the fourth aspect.
Drawings
Fig. 1 is a schematic structural diagram of a wireless communication system provided in an embodiment of the present application;
fig. 2 is a schematic flow chart of a method of data transmission provided by an embodiment of the present application;
fig. 3 is a schematic flow chart of another method for data transmission provided by an embodiment of the present application;
FIG. 4 is a schematic block diagram of an apparatus for data transmission provided by an embodiment of the present application;
FIG. 5 is a schematic block diagram of another apparatus for data transmission provided by an embodiment of the present application;
FIG. 6 is a schematic block diagram of an apparatus for further data transmission provided by an embodiment of the present application;
fig. 7 is a schematic block diagram of an apparatus for further data transmission provided in an embodiment of the present application.
Detailed Description
The technical solution in the present application will be described below with reference to the accompanying drawings.
Fig. 1 illustrates a wireless communication system 100 to which an embodiment of the present application is applied. The wireless communication system 100 can include at least one network device, shown in fig. 1 as network device 110, the network device 110 can provide communication coverage for a particular geographic area and can communicate with terminal devices located within the coverage area. The network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a base station (nodeB, NB) in a WCDMA system, an evolved node B (eNB or eNodeB) in an LTE system, or a radio controller in a Cloud Radio Access Network (CRAN). The network device may also be a relay station, an access point, a vehicle-mounted device, a wearable device, a network-side device in a future 5G network, or a network device in a Public Land Mobile Network (PLMN) for future evolution, and the like.
The wireless communication system 100 also includes a plurality of terminal devices located within the coverage area of the network device 110, terminal device 120 and terminal device 130 being shown in fig. 1.
Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the wireless communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application. Optionally, the wireless communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited thereto.
It should be understood that in the embodiments of the present application, the terminal device may be mobile or fixed. The terminal equipment 120 and the terminal equipment 130 may refer to access terminals, User Equipments (UEs), subscriber units, subscriber stations, mobile stations, remote terminals, mobile devices, user terminals, wireless communication devices, user agents or user equipment, etc. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved PLMN, etc.
It should be appreciated that in the system 100, the terminal device 120 and the terminal device 130 can intelligently select appropriate times to enter the power saving/sleep mode to reduce power consumption, and the network device 110 can wake them up when needed (e.g., when emergency/real-time traffic demands are met). Since the WUR operates in the narrowband mode, the terminal device 120 or the terminal device 130 can continuously listen to the narrowband signal while the master radio is off in the power saving mode, and turn the master radio on upon receiving a wake-up frame sent by the network device.
It should also be understood that the network device needs to periodically send a beacon frame to the terminal devices that are associated with the network device and enter the power saving mode, so that the terminal devices know that the network device is in the working state, and furthermore, the unassociated terminal devices can also perceive the existence of the network device through the beacon frame.
Since the transmission rate of the beacon frame is low, a large amount of air interface overhead is occupied by periodically transmitting the beacon frame.
According to the method and the device for data transmission provided by the embodiment of the application, a network device determines that a first wakeup frame to be sent exists in a first time period, the first time period comprises a preset sending moment of a beacon frame, the beacon frame is sent periodically, the duration of the first time period is greater than or equal to 0 and less than the sending period of the beacon frame, the network device sends the first wakeup frame to replace sending the beacon frame, and therefore the overhead of the beacon frame can be reduced.
It should be understood that the network device transmits the first wake-up frame instead of transmitting the beacon frame, so that the network device does not need to transmit the beacon frame at the transmission time, and accordingly, a second terminal device other than the first terminal device can take the first wake-up frame as the beacon frame, and therefore, the overhead of the beacon frame can be reduced.
Fig. 2 shows a schematic flow chart of a method 200 for data transmission provided by the embodiment of the present application, and the method 200 may be applied to a wireless communication system as shown in fig. 1, for example, and it is to be understood that the method 200 may be performed by a network device, which may be an access point, for example.
S210, the network device determines that a first wakeup frame to be sent exists in a first time period, where the first wakeup frame is used to wake up a first terminal device, the first time period includes a preset first sending time of a beacon frame, the beacon frame is sent periodically, a duration of the first time period is greater than or equal to 0 and is less than a sending period of the beacon frame, and when the duration of the first time period is equal to 0, the first time period is the first sending time.
S220, the network device sends the first wake-up frame to replace the beacon frame.
Optionally, the first time period in this embodiment may be at least one time period, and the first sending time may be at least one sending time.
As an optional embodiment, the first sending time may be a sending time of any sending period of a beacon frame, the first time period may be a time period at least including the first sending time, and a duration of the first time period is less than the sending period.
As another optional embodiment, when the first sending time may be multiple sending times, the multiple sending times may be multiple sending times in continuous cycles or multiple sending times in discontinuous cycles, the multiple time periods may be understood as time periods corresponding to each of the multiple sending times, and the multiple wakeup frames may be understood as wakeup frames to be sent in each time period, which is not limited in this embodiment of the present application.
Optionally, the first time period in this embodiment of the application may be at least one time period, the first sending time may be at least one sending time, the first wakeup frame may be at least one wakeup frame, when the first sending time is multiple sending times, the multiple sending times may be multiple sending times in continuous cycles or multiple sending times in discontinuous cycles, the multiple time periods may be understood as time periods corresponding to each sending time in the multiple sending times, and the multiple wakeup frames may be understood as wakeup frames to be sent in each time period, which is not limited in this embodiment of the application.
Optionally, the time lengths of the time periods corresponding to each of the multiple sending moments may be equal or different, and this is not limited in this embodiment of the application.
It should be understood that the time period corresponding to the sending time may be understood as a time period at least including the sending time, that is, the duration of the time period is greater than or equal to 0.
It should also be understood that, when the duration of the time period is equal to 0, the time period is the sending time; when the duration of the time period is greater than 0, the duration between the starting time and the ending time of the time period includes the sending time, or the starting time of the time period is the sending time, or the ending time of the time period is the sending time.
Optionally, the beacon frame in this embodiment may be sent in a unicast, multicast, or broadcast form, which is not limited in this embodiment.
In the data transmission method provided in the embodiment of the present application, a network device determines that a first wakeup frame to be sent exists in a first time period, where the first time period includes a preset first sending time of a beacon frame, the beacon frame is sent periodically, a duration of the first time period is greater than or equal to 0 and less than a sending period of the beacon frame, and the network device sends the first wakeup frame instead of sending the beacon frame, so that overhead of the beacon frame can be reduced.
It should be understood that the network device transmits the first wake-up frame instead of transmitting the beacon frame, so that the network device does not need to transmit the beacon frame at the transmission time, and accordingly, other terminal devices except the first terminal device can use the first wake-up frame as the beacon frame, and therefore, the overhead of the beacon frame can be reduced.
In addition, if the network device determines that the wakeup frame to be sent exists in the time period corresponding to each sending time of the beacon frame and sends the wakeup frame instead of the beacon frame, the network device can ensure that the terminal device obtains the beacon frame in the period of each beacon frame while reducing the overhead of the beacon frame, so that the WUR system of the terminal device can sleep periodically, and the energy consumption of the terminal device can be further reduced.
Optionally, the first wake-up frame may carry synchronization information, where the synchronization information is used for time synchronization or frequency synchronization.
As an optional embodiment, the first wake-up frame may carry a synchronization information field, where the synchronization information field is used to indicate time domain information or frequency information of the network device, so that the terminal device performs time synchronization or frequency synchronization with the network device according to the synchronization information field.
Optionally, the network device sends the first wake-up frame, and may send the first wake-up frame at a first sending rate for the network device, where the first sending rate is less than a preset rate threshold.
According to the data transmission method provided by the embodiment of the application, the network device reduces the sending rate of the first wakeup frame to be low enough, so that more terminal devices can sense the first wakeup frame, the first wakeup frame can be correctly analyzed, and the first wakeup frame is used as the beacon frame.
Optionally, before S210, the network device may send a listening notification message to the second terminal device, the listening notification message being used to instruct the second terminal device to listen to the beacon frame during the first time period.
Optionally, the second terminal device in this embodiment may be another terminal device besides the first terminal device, and the first terminal device and the second terminal device may be terminal devices associated with the network device.
Optionally, the network device may carry indication information in the listening notification sending message, where the indication information is used to indicate that, if the second terminal device listens to a first wakeup frame sent by the network device in a first time period, the second terminal device uses the first wakeup frame as the beacon frame; or the network device and the second terminal device may agree in advance on a transmission policy of the beacon frame, which is not limited in this embodiment of the application.
Optionally, in S220, the network device may send the first wake-up frame immediately when determining that the first wake-up frame exists, or may send the first wake-up frame within a first duration after determining that the first wake-up frame exists, which is not limited in this embodiment of the application.
Optionally, in the embodiment of the present application, a manner in which the network device and the second terminal device obtain the information of the first time period is not limited.
As an optional embodiment, the network device and the second terminal device may agree in advance with a start frame and a transmission period of beacon frame transmission, and determine a first time period in which each transmission time of the beacon frame is located according to the start frame and the transmission period.
As another alternative, the network device may carry start frame information, listening period information, and listening duration information of beacon frame transmission in the listening notification message.
Optionally, if the network device determines that there is no second wakeup frame to be sent in the first time period, where the second wakeup frame is used to wake up a third terminal device, the network device sends the beacon frame.
Optionally, the third terminal device may be the first terminal device, and the second wakeup frame may be the first wakeup frame, that is, if the network device determines that the first wakeup frame exists in the first time period, the network device sends the wakeup frame instead of sending the beacon frame, and if the network device determines that the first wakeup frame does not exist in the first time period, the network device sends the beacon frame.
As an alternative embodiment, the network device may transmit the beacon frame in the first time period, or may transmit the beacon frame at the end of the first time period, which is not limited in this application.
In the method for transmitting data provided in the embodiment of the present application, when the network device determines that the second wakeup frame to be sent does not exist in the first time period, the network device sends the beacon frame, which ensures that the terminal device can receive the beacon frame in each beacon frame period.
Optionally, the network device may communicate with a terminal device operating on each of the frequency domain channels through a plurality of frequency domain channels, and if the first wakeup frame is sent on a first frequency domain channel, where the plurality of frequency domain channels include the first frequency domain channel, when the network device determines that a second wakeup frame to be sent does not exist in the first time period, the network device sends the beacon frame on a second frequency domain channel while sending the first wakeup frame on the first frequency domain channel, where the second wakeup frame is used to wake up a third terminal device, and the third terminal device operates on a second frequency domain channel, where the plurality of frequency domain channels include the second frequency domain channel, and the second frequency domain channel is different from the first frequency domain channel.
It should be understood that the network device may communicate with the terminal device operating on each of the plurality of frequency domain channels, the WUR system is usually operated on a narrow band to save power, and the network device needs to have a 20MHz preamble sequence at the beginning of the wake-up frame transmission, so that once the network device transmits the wake-up frame on one of the plurality of frequency domain channels, the other frequency domain channels are not used for transmitting other data, i.e. are in an idle state, even though the wake-up frame is not transmitted.
In the data transmission method provided in the embodiment of the present application, when the network device determines that a first wakeup frame to be sent on a first frequency domain channel exists in a first time period and a second wakeup frame to be sent on a second frequency domain channel does not exist, the network device sends a beacon frame on the second frequency domain channel while sending the first wakeup frame on the first frequency domain channel, so that frequency domain bandwidth can be fully utilized, and the utilization rate of system resources is improved.
Optionally, if the network device determines that there is no wakeup frame to be sent on a first frequency domain channel of the multiple frequency domain channels in the first time period, the network device may send a beacon frame on the first frequency domain channel, so as to ensure that each terminal device operating on the first frequency domain channel can listen to the beacon frame.
Optionally, if the network device determines that there is no wakeup frame to be sent on each of the frequency domain channels in the plurality of frequency domain channels in the first time period, the network device may broadcast the beacon frame on all the frequency domain channels, for example, the network device may broadcast the beacon frame on all the frequency domain channels simultaneously, which is not limited in this embodiment of the present application.
Optionally, an embodiment of the present application further provides a data transmission method, where the method includes: if the network device determines that the duration of the transmission opportunity acquired in advance is still left in a first time period, the network device may send the beacon frame in the remaining duration of the transmission opportunity, where the first time period includes a preset sending time of the beacon frame, the beacon frame is sent periodically, and the duration of the first time period is greater than or equal to 0 and is less than a sending period of the beacon frame.
It should be understood that the transmission opportunity TXOP is a time period in the WLAN system, and the network device obtains the transmission right of the channel through contention, and the transmission right enables the network device to obtain the right to transmit data to a mobile terminal in the reserved time period. During the reserved time period, other mobile terminals will keep silent, so that other terminal devices will not interfere with the mobile terminal or generate transmission collision with the mobile terminal. The TXOP period usually has an upper limit of a time length, e.g., 3 ms.
According to the method for transmitting the beacon frame, provided by the embodiment of the application, when the reserved time period obtained by the network equipment through the TXOP is still remained, the network equipment can send the beacon frame to the terminal equipment within the remained time period of the TXOP, so that the situation that the data sending right is obtained by channel competition again at the sending time of the preset beacon frame is avoided, the expense of the channel competition is reduced, and the probability of transmission collision is reduced.
Fig. 3 shows a schematic flow chart of a method 300 for data transmission provided by the embodiment of the present application, where the method 300 may be applied to a wireless communication system as shown in fig. 1, for example, and it is to be understood that the method 300 may be performed by a terminal device, which may be a station, for example.
S310, a terminal device listens for a beacon frame sent by a network device in a first time period, wherein the first time period comprises a preset first receiving time of the beacon frame, the beacon frame is sent periodically, the duration of the first time period is greater than or equal to 0 and less than the sending period of the beacon frame, and when the duration of the first time period is equal to 0, the first time period is the first receiving time.
S320, if the terminal device monitors the wakeup frame sent by the network device in the first time period, where the wakeup frame is used to wake up other terminal devices, the terminal device uses the wakeup frame as the beacon frame.
Optionally, the first time period in this embodiment may be at least one time period, and the first receiving time may be at least one receiving time.
As an optional embodiment, the first receiving time may be a receiving time of any receiving period of a beacon frame, the first time period may be a time period at least including the first receiving time, and a duration of the first time period is less than the receiving period.
As another optional embodiment, when the first receiving time may be multiple receiving times, the multiple receiving times may be multiple receiving times of continuous cycles or multiple receiving times of discontinuous cycles, the multiple time periods may be understood as time periods corresponding to each of the multiple receiving times in a one-to-one manner, and the multiple wakeup frames may be understood as wakeup frames to be received in each time period, which is not limited in this embodiment of the present application.
Optionally, the time lengths of the time periods corresponding to each of the multiple receiving moments may be equal or different, which is not limited in this embodiment of the application.
It should be understood that the time period corresponding to the receiving time may be understood as a time period at least including the receiving time, that is, the duration of the time period is greater than or equal to 0.
It should also be understood that when the duration of the time period is equal to 0, the time period is the receiving time; when the duration of the time period is greater than 0, the duration between the starting time and the ending time of the time period includes the receiving time, or the starting time of the time period is the receiving time, or the ending time of the time period is the receiving time.
Optionally, the beacon frame in this embodiment may be received in a unicast, multicast, or broadcast form, which is not limited in this embodiment.
Optionally, the wake-up frame may carry synchronization information, which is used for time synchronization or frequency synchronization.
As an optional embodiment, the wake-up frame may carry a synchronization information field, where the synchronization information field is used to indicate time domain information or frequency information of the network device, so that the terminal device performs time synchronization or frequency synchronization with the network device according to the synchronization information field.
Alternatively, before S310, the terminal device may receive a listening notification message sent by the network device, where the listening notification message is used to notify the terminal device to listen to the beacon frame in the first time period, and the terminal device may listen to the beacon frame sent by the network device in the first time period according to the listening notification message.
Optionally, the wakeup frame carries synchronization information, where the synchronization information is used for time synchronization or frequency synchronization.
Optionally, if the terminal device listens to a plurality of wake-up frames sent by the network device in the first time period, the terminal device may use any one of the wake-up frames as a beacon frame according to a pre-agreement with the network device, for example, the wake-up frame with the best channel quality may be used as the beacon frame, or the first received wake-up frame may be used as the beacon frame, which is not limited in this embodiment of the present application.
According to the data transmission method provided by the embodiment of the application, if the terminal device senses the wakeup frame sent by the network device to other terminal devices in the first time period, the terminal device takes the wakeup frame as the beacon frame, so that the overhead of the beacon frame can be reduced.
In addition, if the terminal device uses the received wakeup frame as the beacon frame in the time period corresponding to each receiving time of the beacon frame, the overhead of the beacon frame is reduced, and meanwhile, the terminal device can be ensured to obtain the beacon frame in the period of each beacon frame, so that the WUR system of the terminal device can sleep periodically, and the energy consumption of the terminal device can be further reduced.
Optionally, if the terminal device monitors a wakeup frame sent by the network device in a first time period, the terminal device uses the wakeup frame as a beacon frame, and synchronizes with the network device according to the wakeup frame; and if the terminal equipment monitors the beacon frame sent by the network equipment in the first time period, the terminal equipment synchronizes with the network equipment according to the beacon frame.
Optionally, an embodiment of the present application further provides a data transmission method, where the method includes: the method comprises the steps that terminal equipment determines that the time length of a transmission opportunity pre-allocated by network equipment is remained in a first time period, the first time period comprises the sending time of a preset beacon frame, the beacon frame is sent periodically, and the time length of the first time period is greater than or equal to 0 and is less than the sending period of the beacon frame; the terminal device receives the beacon frame for the duration of the remaining transmission opportunity.
According to the method for transmitting the beacon frame, the terminal device receives the beacon frame sent by the network device within the residual duration of the TXOP reserved time period obtained by the network device, and the probability of transmission collision of the terminal device is reduced.
The method for data transmission according to the embodiment of the present application is described in detail above with reference to fig. 1 to 3, and the apparatus for data transmission according to the embodiment of the present application is described in detail below with reference to fig. 4 to 7.
Fig. 4 is a schematic block diagram of an apparatus 400 for data transmission according to an embodiment of the present application, where the apparatus 400 may be, for example, a network device as shown in fig. 1. The apparatus 400 comprises:
a determining unit 410, configured to determine that a first wakeup frame to be sent exists in a first time period, where the first wakeup frame is used to wake up a first terminal device, the first time period includes a preset first sending time of a beacon frame, the beacon frame is sent periodically, a duration of the first time period is greater than or equal to 0 and is less than a sending period of the beacon frame, and when the duration of the first time period is equal to 0, the first time period is the first sending time;
a communication unit 420, configured to send the first wake-up frame determined by the determining unit 410, instead of sending the beacon frame.
Optionally, the first wake-up frame carries synchronization information, and the synchronization information is used for time synchronization or frequency synchronization.
Optionally, the communication unit is specifically configured to send the first wakeup frame at a first sending rate, where the first sending rate is smaller than a preset rate threshold.
Optionally, the communication unit is specifically configured to send, before sending the first wake-up frame, a listening notification message to a second terminal device, where the listening notification message is used to instruct the second terminal device to listen to the beacon frame in the first time period.
Optionally, the apparatus 400 communicates with a terminal device operating on each of the frequency domain channels through a plurality of frequency domain channels, the first wakeup frame being sent on a first frequency domain channel, the plurality of frequency domain channels including the first frequency domain channel; the determining unit is further configured to determine that, in the first time period, there is no second wake-up frame to be sent, where the second wake-up frame is used to wake up a third terminal device, the third terminal device operates on a second frequency domain channel, the plurality of frequency domain channels include the second frequency domain channel, and the second frequency domain channel is different from the first frequency domain channel; the communication unit is further configured to transmit the beacon frame on the second frequency domain channel while the communication unit transmits the first wakeup frame on the first frequency domain channel.
In an optional example, it may be understood by those skilled in the art that the apparatus 400 may be embodied as a network device in the foregoing method embodiment, and the apparatus 400 may be configured to perform each procedure and/or step corresponding to the network device in the foregoing method embodiment, and in order to avoid repetition, details are not described here again.
It should be appreciated that the apparatus 400 herein may be embodied in the form of a functional unit. The term "unit" herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality.
Fig. 5 illustrates an apparatus 500 for data transmission provided by an embodiment of the present application. The apparatus 500 may be, for example, a terminal device as shown in fig. 1. The apparatus 500 comprises:
a communication unit 510, configured to listen to a beacon frame sent by a network device in a first time period, where the first time period includes a preset first receiving time of the beacon frame, the beacon frame is sent periodically, a duration of the first time period is greater than or equal to 0 and is less than a receiving period of the beacon frame, and when the duration of the first time period is equal to 0, the first time period is the first sending time;
a processing unit 520, configured to use the wakeup frame as the beacon frame if the communication unit 510 monitors the wakeup frame sent by the network device in the first time period, where the wakeup frame is used to wake up other terminal devices.
Optionally, the communication unit is further configured to: receiving a listening notification message sent by a network device before listening for a beacon frame sent by the network device in a first time period, wherein the listening notification message is used for notifying the terminal device to listen for the beacon frame in the first time period; and according to the interception notification message, intercepting the beacon frame in the first time period.
Optionally, the wakeup frame carries synchronization information, and the synchronization information is used for time synchronization or frequency synchronization.
In an optional example, it may be understood by those skilled in the art that the apparatus 500 may be specifically a terminal device in the foregoing method embodiment, and the apparatus 500 may be configured to execute each procedure and/or step corresponding to the terminal device in the foregoing method embodiment, and for avoiding repetition, details are not described here again.
It should be appreciated that the apparatus 500 herein may be embodied in the form of a functional unit. The term unit herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality.
Fig. 6 shows a schematic block diagram of an apparatus 600 for transmitting data according to an embodiment of the present application. As shown in fig. 6, the apparatus 600 includes a processor 610 and a transceiver 620.
The apparatus includes a processor 610, configured to determine that a first wakeup frame to be sent exists in a first time period, where the first wakeup frame is used to wake up a first terminal device, the first time period includes a first sending time of a preset beacon frame, the beacon frame is sent periodically, a duration of the first time period is greater than or equal to 0 and is less than a sending period of the beacon frame, and when the duration of the first time period is equal to 0, the first time period is the first sending time.
A transceiver 620, configured to transmit the first wake-up frame determined by the processor 610 instead of transmitting the beacon frame.
Optionally, the apparatus 600 may also include a memory, which may include read-only memory and random access memory, and provide instructions and data to the processor. The portion of memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 610 may be configured to execute the instructions stored in the memory, and when the processor executes the instructions, the processor may perform the steps corresponding to the network device in the above method embodiments.
It should be understood that in the embodiments of the present application, the processor may be a Central Processing Unit (CPU), and the processor may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
Fig. 7 shows a schematic block diagram of an apparatus 700 for data transmission according to an embodiment of the present application. As shown in fig. 7, the apparatus 700 includes a processor 710 and a transceiver 720.
The transceiver 720 is configured to listen to a beacon frame sent by a network device in a first time period, where the first time period includes a preset first receiving time of the beacon frame, the beacon frame is sent periodically, a duration of the first time period is greater than or equal to 0 and is less than a receiving period of the beacon frame, and when the duration of the first time period is equal to 0, the first time period is the first sending time.
A processor 710, configured to, if the transceiver 720 monitors a wakeup frame sent by the network device in the first time period, where the wakeup frame is used to wake up other terminal devices, use the wakeup frame as the beacon frame.
Optionally, the apparatus 700 may also include a memory, which may include read-only memory and random access memory, and provide instructions and data to the processor. The portion of memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 710 may be configured to execute the instructions stored in the memory, and when the processor executes the instructions, the processor may perform the steps corresponding to the terminal device in the foregoing method embodiments.
It should be understood that in embodiments of the present application, the processor may be a Central Processing Unit (CPU), and the processor may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor executes instructions in the memory, in combination with hardware thereof, to perform the steps of the above-described method. To avoid repetition, it is not described in detail here.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (14)

1. A method of data transmission, comprising:
the method comprises the steps that network equipment determines that a first wakeup frame to be sent exists in a first time period, the first wakeup frame is used for waking up first terminal equipment, the first time period comprises a preset first sending moment of a beacon frame, the beacon frame is sent periodically, the duration of the first time period is greater than or equal to 0 and smaller than the sending period of the beacon frame, and when the duration of the first time period is equal to 0, the first time period is the first sending moment;
the network device sends the first wakeup frame instead of sending the beacon frame, where the first wakeup frame is used as the beacon frame by other terminal devices except the first terminal device, and sending the first wakeup frame by the network device includes: and the network equipment sends the first awakening frame at a first sending rate, wherein the first sending rate is smaller than a preset rate threshold.
2. The method of claim 1, wherein the first wake-up frame carries synchronization information, and wherein the synchronization information is used for time synchronization or frequency synchronization.
3. The method of claim 1 or 2, wherein before the network device sends the first wake-up frame, the method further comprises:
and the network equipment sends an interception notification message to second terminal equipment, wherein the interception notification message is used for indicating the second terminal equipment to intercept the beacon frame in the first time period.
4. The method of claim 1 or 2, wherein the network device communicates with terminal devices operating on each of the frequency-domain channels over a plurality of frequency-domain channels, wherein the first wake-up frame is sent on a first frequency-domain channel, wherein the plurality of frequency-domain channels includes the first frequency-domain channel, and wherein the method further comprises:
the network device determines that a second wake-up frame to be sent does not exist in the first time period, where the second wake-up frame is used to wake up a third terminal device, the third terminal device operates on a second frequency domain channel, the plurality of frequency domain channels include the second frequency domain channel, and the second frequency domain channel is different from the first frequency domain channel;
the network device transmits the beacon frame on the second frequency domain channel while the network device transmits the first wakeup frame on the first frequency domain channel.
5. A method of data transmission, comprising:
a terminal device listens for a beacon frame sent by a network device within a first time period, wherein the first time period comprises a preset first receiving time of the beacon frame, the beacon frame is sent periodically, the duration of the first time period is greater than or equal to 0 and less than the receiving period of the beacon frame, and when the duration of the first time period is equal to 0, the first time period is the first receiving time;
if the terminal device monitors the wakeup frame sent by the network device in the first time period, and the wakeup frame is used for waking up other terminal devices, the terminal device takes the wakeup frame as the beacon frame, the wakeup frame is sent by the network device at a first sending rate, and the first sending rate is smaller than a preset rate threshold.
6. The method of claim 5, wherein before the terminal device listens for a beacon frame transmitted by a network device for a first period of time, the method further comprises:
the terminal device receives an interception notification message sent by the network device, wherein the interception notification message is used for notifying the terminal device to intercept the beacon frame in the first time period;
the method for the terminal device to listen to the beacon frame sent by the network device in the first time period includes:
and the terminal equipment monitors the beacon frame in the first time period according to the monitoring notification message.
7. The method according to claim 5 or 6, wherein the wake-up frame carries synchronization information, and the synchronization information is used for time synchronization or frequency synchronization.
8. An apparatus for data transmission, comprising:
a determining unit, configured to determine that a first wakeup frame to be sent exists in a first time period, where the first wakeup frame is used to wake up a first terminal device, the first time period includes a preset first sending time of a beacon frame, the beacon frame is sent periodically, a duration of the first time period is greater than or equal to 0 and is less than a sending period of the beacon frame, and when the duration of the first time period is equal to 0, the first time period is the first sending time;
a communication unit, configured to send the first wakeup frame determined by the determining unit, instead of sending the beacon frame, where the first wakeup frame is used as the beacon frame by a terminal device other than the first terminal device, and the communication unit is specifically configured to: and sending the first wake-up frame at a first sending rate, wherein the first sending rate is less than a preset rate threshold.
9. The apparatus of claim 8, wherein the first wake-up frame carries synchronization information, and wherein the synchronization information is used for time synchronization or frequency synchronization.
10. The apparatus according to claim 8 or 9, wherein the communication unit is specifically configured to send a listening notification message to a second terminal device before sending the first wake-up frame, and the listening notification message is configured to instruct the second terminal device to listen to the beacon frame in the first time period.
11. The apparatus of claim 8 or 9, wherein the apparatus communicates with a terminal device operating on each of the frequency domain channels over a plurality of frequency domain channels, wherein the first wake-up frame is sent on a first frequency domain channel, and wherein the plurality of frequency domain channels comprises the first frequency domain channel;
the determining unit is further configured to determine that, in the first time period, there is no second wake-up frame to be sent, where the second wake-up frame is used to wake up a third terminal device, the third terminal device operates on a second frequency domain channel, the plurality of frequency domain channels include the second frequency domain channel, and the second frequency domain channel is different from the first frequency domain channel;
the communication unit is further configured to transmit the beacon frame on the second frequency domain channel while the communication unit transmits the first wakeup frame on the first frequency domain channel.
12. An apparatus for data transmission, comprising:
a communication unit, configured to listen to a beacon frame sent by a network device in a first time period, where the first time period includes a preset first receiving time of the beacon frame, the beacon frame is sent periodically, a duration of the first time period is greater than or equal to 0 and is less than a receiving period of the beacon frame, and when the duration of the first time period is equal to 0, the first time period is the first receiving time;
and the processing unit is configured to, if the communication unit senses a wakeup frame sent by the network device in the first time period, the wakeup frame is used for waking up other terminal devices, the wakeup frame is used as the beacon frame, the wakeup frame is sent by the network device at a first sending rate, and the first sending rate is smaller than a preset rate threshold.
13. The apparatus of claim 12, wherein the communication unit is further configured to:
receiving a listening notification message sent by a network device before listening for a beacon frame sent by the network device in a first time period, wherein the listening notification message is used for notifying the terminal device to listen for the beacon frame in the first time period;
and according to the interception notification message, intercepting the beacon frame in the first time period.
14. The apparatus according to claim 12 or 13, wherein the wakeup frame carries synchronization information, and the synchronization information is used for time synchronization or frequency synchronization.
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