CN109302736B - Sleep control method and device for wireless local area network, storage medium, workstation and terminal - Google Patents
Sleep control method and device for wireless local area network, storage medium, workstation and terminal Download PDFInfo
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- CN109302736B CN109302736B CN201710607600.8A CN201710607600A CN109302736B CN 109302736 B CN109302736 B CN 109302736B CN 201710607600 A CN201710607600 A CN 201710607600A CN 109302736 B CN109302736 B CN 109302736B
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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
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
A sleep control method and device, storage medium, workstation and terminal of wireless local area network are disclosed, the method includes following steps: determining a power saving notification frame, the power saving notification frame including a cache data identification field and having a length shorter than a length of a beacon frame; broadcasting the power saving notification frame to a plurality of terminals before broadcasting the beacon frame to the plurality of terminals, so that each terminal determines whether buffer data is to be received according to the buffer data identification field, goes to sleep when there is no buffer data to be received, and receives the beacon frame when there is buffer data to be received; the buffer data identification field and the traffic indication field in the beacon frame have a corresponding relationship, and are used for indicating whether each terminal has buffer data to be received. The scheme of the invention can prolong the sleep time of the terminal on the basis of not influencing the existing function of receiving the cache data of the terminal.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a sleep control method and apparatus for a wireless local area network, a storage medium, a workstation, and a terminal.
Background
In the existing Wireless Local Area Network (WLAN) technology, a station (AP), also called an access point, maintains time synchronization with each terminal (STA), and transmits protocol-related parameters to each terminal, using a Beacon Frame. If the terminal cannot receive the beacon frame for a long time, the terminal and the workstation are disconnected.
Specifically, the beacon frame may include a timestamp field (Time-stamp element), a Traffic Indication field (Traffic Indication MAP, TIM), and other fields. The timestamp field is used for synchronizing the terminals, and the flow indication field is used for indicating whether each terminal has data to be received cached at the workstation. Specifically, when a station needs to transmit data to a terminal, if the terminal is in a sleep state, the station buffers the data, and further indicates that the buffered data will be transmitted later through a beacon frame when the terminal wakes up to receive the beacon frame.
In order to reduce power consumption, a terminal that is not in an active state generally enters a sleep state and wakes up before a preset time point and receives a beacon frame at the preset time point. If the flow indication field indicates that the terminal does not cache the data to be received at the workstation end, the terminal can continue to sleep; otherwise, the data to be received is continuously received from the workstation terminal.
In the prior art, because the frame length of the beacon frame is long, the terminal needs a long time to receive the beacon frame each time the terminal wakes up, which results in a short sleep time and serious power consumption.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a sleep control method and device of a wireless local area network, a storage medium, a workstation and a terminal, which can prolong the sleep time of the terminal on the basis of not influencing the existing function of receiving cache data of the terminal.
In order to solve the above technical problem, an embodiment of the present invention provides a sleep control method for a wireless local area network, including the following steps: determining a power saving notification frame, the power saving notification frame including a cache data identification field and having a length shorter than a length of a beacon frame; broadcasting the power saving notification frame to a plurality of terminals before broadcasting the beacon frame to the plurality of terminals, so that each terminal determines whether buffer data is to be received according to the buffer data identification field, goes to sleep when there is no buffer data to be received, and receives the beacon frame when there is buffer data to be received; the buffer data identification field and the traffic indication field in the beacon frame have a corresponding relationship, and are used for indicating whether each terminal has buffer data to be received.
Optionally, the determining the power saving notification frame includes: copying a traffic indication field in the beacon frame to a buffer data identification field in the power saving notification frame.
Optionally, the determining the power saving notification frame includes: allocating a bit in the cache data identification field for the terminal whenever a sleep notification is received from the terminal, wherein the bit is used for indicating whether the terminal has cache data to be received or not, and the sleep notification is used for indicating that the terminal is going to sleep; sending the position number of the bit in the cache data identification field to the terminal so that the terminal can position the bit in the cache data identification field according to the position number; and configuring the bit allocated to each terminal in the cache data identification field according to whether the terminal sending the sleep notification has cache data to be received or not.
Optionally, each bit in the cache data identification field is allocated only to the terminal that sent the sleep notification.
Optionally, the power saving notification frame further includes a timestamp field, where the timestamp field is obtained by copying the timestamp field in the beacon frame.
Optionally, the broadcasting the power saving notification frame to the plurality of terminals includes: broadcasting the power saving notification frame to the plurality of terminals at a preset target beacon frame transmission time, wherein the beacon frame is broadcast to the plurality of terminals after the target beacon frame transmission time.
Optionally, the broadcasting the power saving notification frame to the plurality of terminals includes: broadcasting the power saving notification frame to the plurality of terminals before a preset target beacon frame transmission time, wherein the beacon frame is broadcast to the plurality of terminals at the preset target beacon frame transmission time, and a frame interval is provided between the power saving notification frame and the beacon frame.
Optionally, the beacon frame is a beacon frame including a transmission traffic indication field.
In order to solve the above technical problem, an embodiment of the present invention provides a sleep control method for a wireless local area network, including the following steps: receiving a power saving notification frame from a station before receiving a beacon frame from the station, the power saving notification frame including a buffer data identification field and having a length shorter than that of the beacon frame; determining whether cache data to be received exist or not according to the cache data identification field; when the cache data to be received does not exist, the sleep is started; receiving the beacon frame from the workstation when cache data to be received exist; the buffer data identification field and the traffic indication field in the beacon frame have a corresponding relationship, and are used for indicating whether each terminal has buffer data to be received.
Optionally, the buffer data identification field in the power saving notification frame is obtained by copying a traffic indication field in the beacon frame.
Optionally, the receiving the power saving notification frame from the workstation includes: when the workstation is about to go to sleep, sending a sleep notification to the workstation; receiving a location number in the cached data identification field from the workstation; according to the position number, positioning a bit in the cache data identification field, wherein the bit is allocated in the cache data identification field by the workstation and is used for indicating whether cache data are to be received or not; and receiving the power saving notification frame from the workstation, wherein the power saving notification frame is obtained by configuring the bit allocated to each terminal in the cache data identification field according to whether the terminal sending the sleep notification has cache data to be received or not.
Optionally, each bit in the cache data identification field is allocated only to the terminal that sent the sleep notification.
Optionally, the power saving notification frame further includes a timestamp field, where the timestamp field is obtained by copying the timestamp field in the beacon frame.
Optionally, the receiving the power saving notification frame from the workstation includes: receiving the power save notification frame from the station at a preset target beacon frame transmission time, wherein the beacon frame is received from the station after the target beacon frame transmission time.
Optionally, the receiving the power saving notification frame from the workstation includes: receiving the power saving notification frame from the station before a preset target beacon frame transmission time, wherein the beacon frame is received from the station at the preset target beacon frame transmission time, and a frame interval is provided between the power saving notification frame and the beacon frame.
Optionally, the beacon frame is a beacon frame including a transmission traffic indication field.
To solve the above technical problem, an embodiment of the present invention provides a sleep control apparatus for a wireless lan, including: a power saving notification frame determination module adapted to determine a power saving notification frame, the power saving notification frame including a cache data identification field and having a length shorter than a length of a beacon frame; a power saving notification frame broadcasting module adapted to broadcast the power saving notification frame to a plurality of terminals before broadcasting the beacon frame to the plurality of terminals, so that each terminal determines whether there is cache data to be received according to the cache data identification field, and goes to sleep when there is no cache data to be received, and receives the beacon frame when there is cache data to be received; the buffer data identification field and the traffic indication field in the beacon frame have a corresponding relationship, and are used for indicating whether each terminal has buffer data to be received.
Optionally, the power saving notification frame determining module includes: and the copying submodule is suitable for copying the flow indication field in the beacon frame to the cache data identification field in the power saving notification frame.
Optionally, the power saving notification frame determining module includes: a bit allocation submodule, adapted to allocate a bit in the buffer data identification field for the terminal whenever a sleep notification is received from the terminal, the bit being used to indicate whether the terminal has buffer data to receive, wherein the sleep notification is used to indicate that the terminal is going to sleep; the position number sending submodule is suitable for sending the position number of the bit in the cache data identification field to the terminal so that the terminal can position the bit in the cache data identification field according to the position number; and the configuration submodule is suitable for configuring the bit allocated to each terminal in the cache data identification field according to whether the terminal sending the sleep notification has cache data to be received or not.
Optionally, each bit in the cache data identification field is allocated only to the terminal that sent the sleep notification.
Optionally, the power saving notification frame further includes a timestamp field, where the timestamp field is obtained by copying the timestamp field in the beacon frame.
Optionally, the power saving notification frame broadcasting module includes: a first power saving notification frame broadcasting sub-module adapted to broadcast the power saving notification frame to the plurality of terminals at a preset target beacon frame transmission time, wherein the beacon frame is broadcast to the plurality of terminals after the target beacon frame transmission time.
Optionally, the power saving notification frame broadcasting module includes: a second power saving notification frame broadcasting sub-module adapted to broadcast the power saving notification frame to the plurality of terminals before a preset target beacon frame transmission time at which the beacon frame is broadcast to the plurality of terminals with a frame interval therebetween.
Optionally, the beacon frame is a beacon frame including a transmission traffic indication field.
To solve the above technical problem, an embodiment of the present invention provides a sleep control apparatus for a wireless lan, including: a power saving notification frame receiving module adapted to receive a power saving notification frame from a workstation before receiving a beacon frame from the workstation, the power saving notification frame including a buffer data identification field and having a length shorter than that of the beacon frame; the cache data determining module is suitable for determining whether cache data to be received exist or not according to the cache data identification field; the sleep module is suitable for entering sleep when the cache data to be received does not exist; a beacon frame receiving module adapted to receive the beacon frame from the workstation when there is buffered data to be received; the buffer data identification field and the traffic indication field in the beacon frame have a corresponding relationship, and are used for indicating whether each terminal has buffer data to be received.
Optionally, the buffer data identification field in the power saving notification frame is obtained by copying a traffic indication field in the beacon frame.
Optionally, the power saving notification frame receiving module includes: the sleep notification sending submodule is suitable for sending a sleep notification to the workstation when the workstation is going to sleep; a location number receiving submodule adapted to receive a location number in the cached data identification field from the workstation; a bit positioning sub-module, adapted to position a bit in the cache data identification field according to the position number, where the bit is allocated in the cache data identification field by the workstation and used for indicating whether to-be-received cache data; a first power saving notification frame receiving sub-module, adapted to receive the power saving notification frame from the workstation, where the power saving notification frame is obtained by configuring, in the buffer data identification field, bits allocated to each terminal according to whether a terminal sending a sleep notification has buffer data to receive.
Optionally, each bit in the cache data identification field is allocated only to the terminal that sent the sleep notification.
Optionally, the power saving notification frame further includes a timestamp field, where the timestamp field is obtained by copying the timestamp field in the beacon frame.
Optionally, the power saving notification frame receiving module includes: a second power saving notification frame receiving sub-module adapted to receive the power saving notification frame from the station at a preset target beacon frame transmission time, wherein the beacon frame is received from the station after the target beacon frame transmission time.
Optionally, the power saving notification frame receiving module includes: a third power saving notification frame receiving sub-module adapted to receive the power saving notification frame from the station before a preset target beacon frame transmission time, wherein the beacon frame is received from the station at the preset target beacon frame transmission time, and a frame interval is provided between the power saving notification frame and the beacon frame.
Optionally, the beacon frame is a beacon frame including a transmission traffic indication field.
In order to solve the above technical problem, an embodiment of the present invention provides a computer-readable storage medium, on which computer instructions are stored, and the computer instructions, when executed, perform the steps of the sleep control method for a wireless local area network described above.
In order to solve the above technical problem, an embodiment of the present invention provides a workstation, including a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the steps of the sleep control method for a wireless local area network when executing the computer instructions.
In order to solve the above technical problem, an embodiment of the present invention provides a terminal, including a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the steps of the sleep control method for a wireless local area network when executing the computer instructions.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
in an embodiment of the present invention, a power saving notification frame is determined, the power saving notification frame including a cache data identification field, and a length of the power saving notification frame being shorter than a length of a beacon frame; broadcasting the power saving notification frame to a plurality of terminals before broadcasting the beacon frame to the plurality of terminals, so that each terminal determines whether buffer data is to be received according to the buffer data identification field, goes to sleep when there is no buffer data to be received, and receives the beacon frame when there is buffer data to be received; the buffer data identification field and the traffic indication field in the beacon frame have a corresponding relationship, and are used for indicating whether each terminal has buffer data to be received. By adopting the scheme, before broadcasting one or more beacon frames to a plurality of terminals, the power saving notification frame shorter than the beacon frame is broadcasted, so that after each terminal receives the power saving notification frame, whether the data to be received cached at the workstation end exists can be determined, the terminal can enter sleep without receiving the beacon frame, the sleep time of the terminal can be prolonged on the basis of not influencing the existing data receiving and caching function of the terminal, and the power consumption is effectively saved.
Further, the buffer data identification field in the power saving notification frame may be configured for a plurality of terminals that receive the sleep notification, and the terminal may determine whether buffer data is to be received or not by a bit in the buffer data identification field through a location number. Compared with the method and the device for configuring and sending the bits for a plurality of terminals which do not go to sleep in addition to the terminals which go to sleep, the method and the device for configuring and sending the bits for the terminals which do not go to sleep help to reduce the length of the cache data identification field in the power saving notification frame to be sent.
Furthermore, the workstation can broadcast the power saving notification frame at the preset target beacon frame transmission time, and the scheme of the embodiment of the invention is beneficial to the terminal to receive the power saving notification frame according to the original target beacon frame transmission time configuration, thereby reducing the implementation complexity of the terminal.
Further, the workstation may broadcast the power saving notification frame to the plurality of terminals before a preset target beacon frame transmission time, and a frame interval is provided between the power saving notification frame and the beacon frame.
Further, the beacon frame may be a beacon frame including a transmission traffic indication field, and by using the scheme of the embodiment of the present invention, the sleep control method of the wireless local area network may be only used for a terminal with a high power saving requirement, so as to reduce the influence on other terminals.
Drawings
Fig. 1 is a flowchart of a sleep control method for a first wlan according to an embodiment of the present invention;
fig. 2 is a data flow diagram of a sleep control method of a second wlan according to an embodiment of the present invention;
FIG. 3 is a flowchart of one embodiment of step S11 of FIG. 1;
fig. 4 is a data flow diagram of a sleep control method of a third wlan according to an embodiment of the present invention;
fig. 5 is a flowchart of a sleep control method of a fourth wlan according to an embodiment of the present invention;
fig. 6 is a data flow diagram of a sleep control method of a fifth wlan in an embodiment of the present invention;
FIG. 7 is a flowchart of one embodiment of step S51 of FIG. 5;
fig. 8 is a data flow diagram of a sleep control method for a sixth wlan in an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a sleep control apparatus of a wireless lan according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of an embodiment of the power saving notification frame determination module 91 in fig. 9;
fig. 11 is a schematic diagram of an embodiment of the power saving notification frame broadcasting module 92 in fig. 9;
fig. 12 is a schematic structural diagram of a sleep control apparatus of another wlan in an embodiment of the present invention;
fig. 13 is a schematic structural diagram of an embodiment of the power saving notification frame receiving module 121 in fig. 12;
fig. 14 is a schematic structural diagram of another embodiment of the power saving notification frame receiving module 121 in fig. 12.
Detailed Description
In the existing WLAN technology, a WLAN basic service set (BBS) includes a workstation and a terminal, and specifically, the workstation is a communication device, such as a central controller, a base station or a scheduler, which allows the terminal to access and communicate with the WLAN. The terminal is any user communication device that allows a user to communicate with a workstation and thus with a WLAN, such as a smart phone, tablet, laptop, desktop, smart watch, and other sensing devices, as well as other mobile or communication devices with WLAN (e.g., Wi-Fi) functionality.
Specifically, the station maintains time synchronization with each terminal using a beacon frame and transmits protocol-related parameters to each terminal, and in order to reduce power consumption, a terminal that is not in an operating state typically enters a sleep state and wakes up before a preset time point and receives the beacon frame at the preset time point. However, in the prior art, since the frame length of the beacon frame is long, the terminal needs a long time to receive the beacon frame each time it wakes up, which results in a short sleep time and serious power consumption.
The inventor of the present invention has found through research that although a beacon frame may include multiple fields including a timestamp field, a traffic indication field, and other fields, for a terminal entering a sleep state, a field that needs to be received most timely is the traffic indication field, and through this field, data to be received that is cached at a workstation end can be prevented from being missed.
In an embodiment of the present invention, a power saving notification frame is determined, the power saving notification frame including a cache data identification field, and a length of the power saving notification frame being shorter than a length of a beacon frame; broadcasting the power saving notification frame to a plurality of terminals before broadcasting the beacon frame to the plurality of terminals, so that each terminal determines whether buffer data is to be received according to the buffer data identification field, goes to sleep when there is no buffer data to be received, and receives the beacon frame when there is buffer data to be received; the buffer data identification field and the traffic indication field in the beacon frame have a corresponding relationship, and are used for indicating whether each terminal has buffer data to be received. By adopting the scheme, before broadcasting one or more beacon frames to a plurality of terminals, the power saving notification frame shorter than the beacon frame is broadcasted, so that after each terminal receives the power saving notification frame, whether the data to be received cached at the workstation end exists can be determined, the terminal can enter sleep without receiving the beacon frame, the sleep time of the terminal can be prolonged on the basis of not influencing the existing data receiving and caching function of the terminal, and the power consumption is effectively saved.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, fig. 1 is a flowchart of a sleep control method for a first wlan according to an embodiment of the present invention. The sleep control method of the first wlan may be applied to a workstation, and may include steps S11 to S12:
step S11: determining a power saving notification frame, the power saving notification frame including a cache data identification field and having a length shorter than a length of a beacon frame;
step S12: broadcasting the power saving notification frame to a plurality of terminals before broadcasting the beacon frame to the plurality of terminals, so that each terminal determines whether buffer data is to be received according to the buffer data identification field, goes to sleep when there is no buffer data to be received, and receives the beacon frame when there is buffer data to be received. The buffer data identification field and the traffic indication field in the beacon frame have a corresponding relationship, and are used for indicating whether each terminal has buffer data to be received.
In one implementation of step S11, since the Power Saving Notification Frame (PSNF) with the shortest length may include only the buffered data identification field, the workstation may determine only the buffered data identification field.
It should be noted that the power saving notification frame may be Broadcast to the terminal in the form of Short Broadcast (Short Broadcast) or may be sent to the terminal in the form of Multicast Packet (Multicast Packet). In the embodiment of the present invention, the station broadcasts the power saving notification frame to the terminal as an example, but the power saving notification frame is not limited to be a short broadcast or a multicast packet.
Further, the power saving notification frame may further include a timestamp field, wherein the timestamp field is obtained by copying the timestamp field in the beacon frame. The terminal may determine synchronization with the station to wake up in advance and accept a power save notification frame from the station according to the timestamp field.
Further, the station may determine the power saving notification frame by copying a traffic indication field in a beacon frame to a buffer data identification field in the power saving notification frame.
In one implementation of step S12, the station broadcasts the power saving notification frame to a plurality of terminals before broadcasting the beacon frame to the plurality of terminals.
It should be noted that, in a specific application of the embodiment of the present invention, it may be that transmitting one beacon frame corresponds to transmitting one power saving notification frame, for example, the station broadcasts the power saving notification frame to a plurality of terminals before broadcasting each beacon frame to the plurality of terminals.
In a specific application of the embodiment of the present invention, the sending of a plurality of beacon frames may correspond to sending a power saving notification frame, for example, before the workstation broadcasts a plurality of beacon frames to a plurality of terminals, the power saving notification frame may be broadcasted to the plurality of terminals once, so that the sending times of the power saving notification frame may be controlled, and for a terminal that needs to receive a beacon frame, the power consumption of receiving data may be saved.
In the embodiment of the invention, before broadcasting one or more beacon frames to a plurality of terminals, the workstation broadcasts a power saving notification frame which is shorter than the beacon frame, so that after each terminal receives the power saving notification frame, whether the data to be received cached at the workstation end exists can be determined, and the terminal can enter sleep without receiving the beacon frame, and the sleep time of the terminal can be prolonged on the basis of not influencing the existing function of receiving the cached data of the terminal, thereby more effectively saving power consumption. In one particular application, the length of the power save notification frame may be only one tenth of the length of the beacon frame.
Further, compared with the case that the station needs to broadcast the beacon frame at a lower rate to take care of the receiving capability of all terminals accessing the station, in the embodiment of the present invention, the station may broadcast the power saving notification frame at a higher rate, so that a terminal without buffered data to be received obtains a longer sleep time. Specifically, since not all terminals have to receive the power saving notification frame, a similar function can also be realized by receiving the beacon frame for a terminal with a low reception capability. In one particular application, when transmitting over a 2.4GHz bandwidth, the beacon frame may reach a transmission rate of 1Mbps, and the power save notification frame may reach a transmission rate of 24 Mbps.
Referring to fig. 2, a data flow diagram of a sleep control method for a second wlan, which may be used on a workstation side, may include steps S21 to S24, and each step is described in detail below.
In step S21, the station 21 copies the traffic indication field in the beacon frame to the buffer data identification field in the power saving notification frame.
In a specific implementation, since the power saving notification frame sent by the workstation 21 may include only the buffer data identification field and may also include a part of fields other than the buffer data identification field, and the length of the power saving notification frame is shorter than that of the beacon frame, the time length consumed for the terminal 22 to receive the power saving notification frame may be shorter than that consumed for receiving the beacon frame.
In step S22, the station 21 broadcasts the power saving notification frame to the plurality of terminals 22 before broadcasting the beacon frame to the plurality of terminals 22. So that the terminal 22 receives the power saving notification frame with a shorter length first, which takes a shorter time than directly receiving the beacon frame.
In step S23, the workstation 21 broadcasts the beacon frame to the plurality of terminals 22.
In step S24, the terminal 22 determines whether there is buffered data to be received according to the buffered data identification field, and goes to sleep when there is no buffered data to be received, and receives the beacon frame when there is buffered data to be received.
By adopting the embodiment of the invention, the configuration difficulty of the power saving notification frame can be reduced and the research and development time can be shortened by copying the flow indication field in the beacon frame to the cache data identification field in the power saving notification frame.
Referring to fig. 3, fig. 3 shows a specific embodiment of step S11 in fig. 1, and specifically, may include steps S31 to S33, each of which is described in detail below.
In step S31, whenever a sleep notification is received from the terminal, allocating a bit in the buffer data identification field for the terminal, the bit being used to indicate whether the terminal has buffer data to receive, wherein the sleep notification is used to indicate that the terminal is going to go to sleep.
In step S32, the location number of the bit in the cache data identification field is sent to the terminal, so that the terminal locates the bit in the cache data identification field according to the location number.
In a specific implementation, when the terminal is going to sleep, the sleep notification is sent to the workstation, so that the workstation knows that the terminal enters the power saving mode, and buffers data to be sent for the terminal.
Further, after the terminal locates the bit in the cache data identification field according to the position number, the workstation may configure and send only the bit, for example, send a string of a combination of 0 and 1, where a bit of the string is 1 to indicate that the terminal corresponding to the bit has cache data to receive, and another bit of the string is 0 to indicate that the terminal corresponding to the bit has no cache data to receive. It is to be understood that, in the embodiment of the present invention, specific meanings of 0 and 1 are not limited, and whether a terminal is represented by 1 bit or by multiple bits is not limited.
Compared with the method for simultaneously sending the terminal identifier (such as the number used for indicating the terminal) and the bit corresponding to the terminal, the length of the cache data identification field can be reduced by adopting the scheme of the embodiment of the invention.
It is noted that the workstation may allocate bits only once during the process from the connection of the terminal to the workstation to the disconnection of the terminal from the workstation, and the position number determined from the bits is used only for the terminal. Thereby reducing the workload of the workstation for allocating bits and the terminal for determining the position number.
Further, each bit in the buffer data identification field may be allocated only to a terminal that issued a sleep notification. Compared with the method and the device for configuring and sending the bit for the terminal which enters the sleep mode and the terminals which do not enter the sleep mode, the method and the device for configuring and sending the bit for the terminals which do not enter the sleep mode are beneficial to reducing the length of the cache data identification field in the power saving notification frame to be sent.
In another specific application of the embodiment of the present invention, each bit in the buffer data identification field may also be allocated to a preset terminal, for example, a terminal that is awake and has not sent a sleep notification.
In step S33, the workstation configures bits allocated to each terminal in the buffer data identification field according to whether the terminal issuing the sleep notification has buffer data to receive.
In a specific implementation, the workstation may configure a character string with a preset length, for example, 64bits or 128bits, in the cache data identification field, and when one terminal corresponds to one bit, the character string may correspond to 64 or 128 terminals. Specifically, no matter how many terminals currently have bits to be configured, the workstation uses 64-bit or 128-bit strings, and unallocated bits are filled with 0 or 1. By adopting the scheme of the embodiment of the invention, the consistency of the length of the cache data identification field is kept.
It should be noted that the workstation may also configure a character string in the cache data identification field according to the number of terminals that need to be configured, which is not limited in the embodiment of the present invention.
Further, broadcasting the power saving notification frame to the plurality of terminals may include broadcasting the power saving notification frame to the plurality of terminals at a preset Target Beacon Transmission Time (TBTT), wherein the Beacon frame is broadcast to the plurality of terminals after the Target Beacon frame Transmission Time.
The scheme of the embodiment of the invention is beneficial to the terminal to receive the power saving notification frame according to the original target beacon frame transmission time configuration, and reduces the implementation complexity of the terminal.
In another embodiment, broadcasting the power saving notification frame to the plurality of terminals may include broadcasting the power saving notification frame to the plurality of terminals before a preset target beacon frame transmission time, wherein the beacon frame is broadcast to the plurality of terminals at the preset target beacon frame transmission time, and the power saving notification frame and the beacon frame have an Inter-frame Spacing (IFS) therebetween.
The scheme of the embodiment of the invention is beneficial to broadcasting the beacon frame in the original target beacon frame transmission time, thereby improving the consistency with the prior art.
Specifically, the power saving notification frame may be broadcasted to the plurality of terminals at a preset time before a preset target beacon frame transmission time according to a broadcast duration of the power saving notification frame, so as to broadcast the beacon frame to the plurality of terminals at the preset target beacon frame transmission time; and the difference value between the preset time and the target beacon frame transmission time is more than or equal to the sum value of the broadcast time length and the inter-frame interval.
Further, the beacon frame may be a beacon frame including a Traffic Indication Message (DTIM) field. For example, in one specific application, there is one beacon frame containing a transport traffic indication field every multiple beacon frames.
Specifically, for a terminal with a high power saving requirement, the DTIM field indication may be adopted in the beacon frame, so as to set a longer wake-up period and obtain a longer sleep duration. By adopting the scheme of the embodiment of the invention, the sleep control method of the wireless local area network can be adopted only for the terminal with higher power saving requirement, so as to reduce the influence on other terminals.
Referring to fig. 4, fig. 4 is a data flow diagram of a sleep control method for a third wlan, which may be applied to a workstation side and may include steps S41 to S48, in an embodiment of the present invention, and the steps are described below.
In step S41, the workstation 41 receives a sleep notification from the terminal 42.
In step S42, the workstation 41 allocates bits in the buffer data identification field for the terminal 42.
In step S43, workstation 41 sends the terminal 42 the position number of the bit in the cached data identification field.
In step S44, the terminal 42 locates the bit in the buffer data identification field according to the position number.
In step S45, the workstation 41 configures the bit allocated to each terminal 42 in the buffer data identification field according to whether the terminal 42 issuing the sleep notification has buffer data to receive.
In step S46, the station 41 broadcasts the power saving notification frame to the plurality of terminals 42 before broadcasting the beacon frame to the plurality of terminals 42.
In step S47, the workstation 41 broadcasts the beacon frame to the plurality of terminals 42.
In step S48, the terminal 42 determines whether there is buffered data to be received according to the buffered data identification field, goes to sleep when there is no buffered data to be received, and receives the beacon frame when there is buffered data to be received.
For more details of the third method for controlling sleep in the wlan shown in fig. 4, please refer to the foregoing description and the related descriptions of the method for controlling sleep in the wlan shown in fig. 1 to 3, which are not repeated herein.
Referring to fig. 5, fig. 5 is a flowchart of a sleep control method for a fourth wlan, which may be used in a terminal and includes steps S51 to S54:
step S51: receiving a power saving notification frame from a station before receiving a beacon frame from the station, the power saving notification frame including a buffer data identification field and having a length shorter than that of the beacon frame;
specifically, the power saving notification frame may further include a timestamp field, where the timestamp field is obtained by copying the timestamp field in the beacon frame.
Further, the receiving a power save notification frame from a station may include receiving the power save notification frame from the station at a preset target beacon frame transmission time, wherein the beacon frame is received from the station after the target beacon frame transmission time.
The receiving of the power saving notification frame from the station may further include receiving the power saving notification frame from the station before a preset target beacon frame transmission time at which the beacon frame is received from the station with a frame interval therebetween.
Further, the beacon frame may be a beacon frame including a transmission traffic indication field.
Step S52: determining whether cache data to be received exist or not according to the cache data identification field;
step S53: when the cache data to be received does not exist, the sleep is started;
step S54: receiving the beacon frame from the workstation when cache data to be received exist;
the buffer data identification field and the traffic indication field in the beacon frame have a corresponding relationship, and are used for indicating whether each terminal has buffer data to be received.
Further, in the process of receiving the power saving notification frame from the station using step S51, the buffer data identification field in the power saving notification frame may be obtained by copying the traffic indication field in the beacon frame.
Referring to fig. 6, a data flow diagram of a sleep control method for a fifth wireless local area network according to an embodiment of the present invention may include steps S61 to S64, and the steps are described below.
In step S61, the terminal 62 receives a power saving notification frame from the station 61, the buffer data identification field in the power saving notification frame being obtained by copying the traffic indication field in the beacon frame, before receiving the beacon frame from the station 61.
In step S62, the terminal 62 determines whether there is cache data to be received according to the cache data identification field.
In step S63, when there is no buffered data to be received, the terminal 62 goes to sleep.
In step S64, when there is buffered data to be received, the terminal 62 receives the beacon frame from the workstation 61.
Referring to fig. 7, fig. 7 shows a specific embodiment of step S51 in fig. 5, and specifically, may include steps S71 to S74:
step S71: when the workstation is about to go to sleep, sending a sleep notification to the workstation;
step S72: receiving a location number in the cached data identification field from the workstation;
step S73: according to the position number, positioning a bit in the cache data identification field, wherein the bit is allocated in the cache data identification field by the workstation and is used for indicating whether cache data are to be received or not;
step S74: and receiving the power saving notification frame from the workstation, wherein the power saving notification frame is obtained by configuring the bit allocated to each terminal in the cache data identification field according to whether the terminal sending the sleep notification has cache data to be received or not.
Further, each bit in the buffer data identification field may be allocated only to a terminal that issued a sleep notification.
Fig. 8 is a data flow diagram of a sleep control method for a sixth wireless local area network according to an embodiment of the present invention, where the sleep control method for the sixth wireless local area network may be used for a terminal, and may include steps S81 to S87, and the steps are described below.
In step S81, when going to sleep, the terminal 82 transmits a sleep notification to the workstation 81.
In step S82, the terminal 82 receives the location number in the cache data identification field from the workstation 81.
In step S83, the terminal 82 locates the bits in the buffer data identification field according to the position number.
In step S84, the terminal 82 receives the power saving notification frame from the station 81 before receiving the beacon frame from the station 81.
In step S85, the terminal 82 determines whether there is cache data to be received according to the cache data identification field.
In step S86, when there is no buffered data to be received, the terminal 82 goes to sleep.
In step S87, when there is buffered data to be received, the terminal 82 receives the beacon frame from the workstation 81.
For more details of the sleep control method of the wlan shown in fig. 5 to 8, please refer to the above description and the related description of the sleep control method of the wlan shown in fig. 1 to 4, which are not repeated herein.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a sleep control apparatus of a wireless lan according to an embodiment of the present invention. The sleep control apparatus of the wireless lan may be used at a workstation side, and may include a power saving notification frame determining module 91 and a power saving notification frame broadcasting module 92.
Wherein the power saving notification frame determining module 91 is adapted to determine a power saving notification frame, the power saving notification frame including a buffer data identification field, and a length of the power saving notification frame being shorter than a length of a beacon frame.
The power saving notification frame broadcasting module 92 is adapted to broadcast the power saving notification frame to a plurality of terminals before broadcasting the beacon frame to the plurality of terminals, so that each terminal determines whether there is buffered data to be received according to the buffered data identification field, and goes to sleep when there is no buffered data to be received, and receives the beacon frame when there is buffered data to be received.
The buffer data identification field and the traffic indication field in the beacon frame have a corresponding relationship, and are used for indicating whether each terminal has buffer data to be received.
Further, the power saving notification frame determining module 91 may include a copying sub-module (not shown) adapted to copy the traffic indication field in the beacon frame to the buffer data identification field in the power saving notification frame.
Further, referring to the schematic structural diagram of a specific embodiment shown in fig. 10, the power saving notification frame determining module 91 may include a bit allocation sub-module 101, a position number sending sub-module 102, and a configuration sub-module 103.
Wherein the bit allocation submodule 101 is adapted to allocate a bit in the buffer data identification field for the terminal whenever a sleep notification is received from the terminal, where the bit is used to indicate whether the terminal has buffer data to receive, and the sleep notification is used to indicate that the terminal is going to sleep.
The position number sending submodule 102 is adapted to send the position number of the bit in the cache data identification field to the terminal, so that the terminal locates the bit in the cache data identification field according to the position number.
The configuration submodule 103 is adapted to configure bits allocated to each terminal in the cache data identification field according to whether the terminal sending the sleep notification has cache data to be received.
Wherein, each bit in the buffer data identification field is only allocated to the terminal which sends out the sleep notification.
Further, the power saving notification frame further includes a timestamp field, wherein the timestamp field is obtained by copying the timestamp field in the beacon frame.
Referring to the schematic structural diagram of a specific embodiment of the power saving notification frame broadcasting module 92 shown in fig. 11, the power saving notification frame broadcasting module 92 may include a first power saving notification frame broadcasting sub-module 111 and a second power saving notification frame broadcasting sub-module 112.
Wherein the first power saving notification frame broadcasting sub-module 111 is adapted to broadcast the power saving notification frame to the plurality of terminals at a preset target beacon frame transmission time, wherein the beacon frame is broadcast to the plurality of terminals after the target beacon frame transmission time.
The second power saving notification frame broadcasting sub-module 112 is adapted to broadcast the power saving notification frame to the plurality of terminals before a preset target beacon frame transmission time, where the beacon frame is broadcast to the plurality of terminals at the preset target beacon frame transmission time, and a frame interval is provided between the power saving notification frame and the beacon frame.
Further, the beacon frame is a beacon frame containing a transmission traffic indication field.
For more details of the sleep control apparatus of the wlan, please refer to the related description of the sleep control method of the wlan shown in fig. 1 to 4, which is not repeated herein.
Referring to fig. 12, fig. 12 is a schematic structural diagram of another sleep control apparatus for a wireless lan according to an embodiment of the present invention. The sleep control apparatus of another wireless lan may be used for a terminal, and may include a power saving notification frame receiving module 121, a buffered data determining module 122, a sleep module 123, and a beacon frame receiving module 124.
Wherein the power saving notification frame receiving module 121 is adapted to receive a power saving notification frame from a workstation before receiving a beacon frame from the workstation, wherein the power saving notification frame includes a buffer data identification field, and the length of the power saving notification frame is shorter than the length of the beacon frame.
The cache data determining module 122 is adapted to determine whether cache data is to be received according to the cache data identification field.
The sleep module 123 is adapted to go to sleep when there is no buffered data to be received.
The beacon frame receiving module 124 is adapted to receive the beacon frame from the workstation when there is buffered data to be received.
The buffer data identification field and the traffic indication field in the beacon frame have a corresponding relationship, and are used for indicating whether each terminal has buffer data to be received.
Further, the buffer data identification field in the power saving notification frame may be obtained by copying a traffic indication field in the beacon frame.
Referring to the schematic structural diagram of a specific embodiment of the power saving notification frame receiving module 121 shown in fig. 13, the power saving notification frame receiving module 121 may include a sleep notification sending sub-module 131, a position number receiving sub-module 132, a bit position locating sub-module 133, and a first power saving notification frame receiving sub-module 134.
The sleep notification sending submodule 131 is adapted to send a sleep notification to the workstation when the workstation is going to sleep;
the location number receiving submodule 132 is adapted to receive the location number in the cache data identification field from the workstation;
the bit positioning sub-module 133 is adapted to position a bit in the cache data identification field according to the position number, where the bit is allocated in the cache data identification field by the workstation and is used to indicate whether to-be-received cache data;
the first power saving notification frame receiving sub-module 134 is adapted to receive the power saving notification frame from the workstation, where the power saving notification frame is obtained by configuring, in the buffer data identification field, bits allocated to each terminal according to whether a terminal sending a sleep notification has buffer data to be received or not.
Further, each bit in the buffer data identification field may be allocated only to a terminal that issued a sleep notification.
The power saving notification frame may further include a timestamp field, wherein the timestamp field is obtained by copying the timestamp field in the beacon frame.
Referring to fig. 14, a schematic structural diagram of another specific embodiment of the power saving notification frame receiving module 121 is shown. The power saving notification frame receiving module 121 may include a second power saving notification frame receiving submodule 141 and a third power saving notification frame receiving submodule 142.
Wherein the second power saving notification frame receiving submodule 141 is adapted to receive the power saving notification frame from the station at a preset target beacon frame transmission time, wherein the beacon frame is received from the station after the target beacon frame transmission time.
The third power saving notification frame receiving sub-module 142 is adapted to receive the power saving notification frame from the station before a preset target beacon frame transmission time, where the beacon frame is received from the station at the preset target beacon frame transmission time, and a frame interval is provided between the power saving notification frame and the beacon frame.
Further, the beacon frame may be a beacon frame containing a transmission traffic indication field.
For more details of the sleep control apparatus of another wlan, please refer to the related description of the sleep control method of the wlan shown in fig. 5 to 8, which is not repeated herein.
The embodiment of the invention also provides a computer readable storage medium, which stores computer instructions, and when the computer instructions are executed, the steps of the sleep control method of the wireless local area network are executed. The computer readable storage medium may be an optical disc, a mechanical hard disk, a solid state hard disk, etc. The computer readable storage medium may be applied to a workstation side.
The embodiment of the invention also provides a computer readable storage medium, which stores computer instructions, and when the computer instructions are executed, the steps of the sleep control method of the wireless local area network are executed. The computer readable storage medium may be an optical disc, a mechanical hard disk, a solid state hard disk, etc. The computer-readable storage medium may be applied to a terminal.
The embodiment of the invention also provides a workstation, which comprises a memory and a processor, wherein the memory is stored with computer instructions capable of running on the processor, and the processor executes the steps of the sleep control method of the wireless local area network when running the computer instructions.
The embodiment of the invention also provides a terminal, which comprises a memory and a processor, wherein the memory is stored with computer instructions capable of running on the processor, and the processor executes the steps of the sleep control method of the wireless local area network when running the computer instructions.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (32)
1. A sleep control method of a wireless local area network is characterized by comprising the following steps:
determining a power saving notification frame, the power saving notification frame including a cache data identification field and having a length shorter than a length of a beacon frame;
broadcasting the power saving notification frame to a plurality of terminals before broadcasting the beacon frame to the plurality of terminals, so that each terminal determines whether buffer data is to be received according to the buffer data identification field, goes to sleep when there is no buffer data to be received, and receives the beacon frame when there is buffer data to be received;
the cache data identification field and the flow indication field in the beacon frame have a corresponding relation and are used for indicating whether each terminal has cache data to be received or not;
wherein the determining of the power saving notification frame comprises:
allocating a bit in the cache data identification field for the terminal whenever a sleep notification is received from the terminal, wherein the bit is used for indicating whether the terminal has cache data to be received or not, and the sleep notification is used for indicating that the terminal is going to sleep;
sending the position number of the bit in the cache data identification field to the terminal so that the terminal can position the bit in the cache data identification field according to the position number;
and configuring the bit allocated to each terminal in the cache data identification field according to whether the terminal sending the sleep notification has cache data to be received or not.
2. The sleep control method for wlan according to claim 1, wherein the determining the power saving notification frame includes:
copying a traffic indication field in the beacon frame to a buffer data identification field in the power saving notification frame.
3. The sleep control method of wireless local area network according to claim 1, wherein each bit in the buffer data identification field is allocated only to a terminal which has issued a sleep notification.
4. The sleep control method for a wireless local area network according to claim 1, wherein the power saving notification frame further comprises a timestamp field, wherein the timestamp field is obtained by copying the timestamp field in the beacon frame.
5. The sleep control method for a wireless local area network according to claim 1, wherein broadcasting the power saving notification frame to the plurality of terminals comprises:
broadcasting the power saving notification frame to the plurality of terminals at a preset target beacon frame transmission time, wherein the beacon frame is broadcast to the plurality of terminals after the target beacon frame transmission time.
6. The sleep control method for a wireless local area network according to claim 1, wherein broadcasting the power saving notification frame to the plurality of terminals comprises:
broadcasting the power saving notification frame to the plurality of terminals before a preset target beacon frame transmission time, wherein the beacon frame is broadcast to the plurality of terminals at the preset target beacon frame transmission time, and a frame interval is provided between the power saving notification frame and the beacon frame.
7. The sleep control method for wireless local area network according to claim 1, wherein the beacon frame is a beacon frame containing a transmission traffic indication field.
8. A sleep control method of a wireless local area network is characterized by comprising the following steps:
receiving a power saving notification frame from a station before receiving a beacon frame from the station, the power saving notification frame including a buffer data identification field and having a length shorter than that of the beacon frame;
determining whether cache data to be received exist or not according to the cache data identification field;
when the cache data to be received does not exist, the sleep is started;
receiving the beacon frame from the workstation when cache data to be received exist;
the cache data identification field and the flow indication field in the beacon frame have a corresponding relation and are used for indicating whether each terminal has cache data to be received or not;
wherein the receiving of the power saving notification frame from the station comprises:
when the workstation is about to go to sleep, sending a sleep notification to the workstation;
receiving a location number in the cached data identification field from the workstation;
according to the position number, positioning a bit in the cache data identification field, wherein the bit is allocated in the cache data identification field by the workstation and is used for indicating whether cache data are to be received or not;
and receiving the power saving notification frame from the workstation, wherein the power saving notification frame is obtained by configuring the bit allocated to each terminal in the cache data identification field according to whether the terminal sending the sleep notification has cache data to be received or not.
9. The sleep control method for wlan according to claim 8, wherein the buffer data id field in the power saving notification frame is obtained by copying the traffic indication field in the beacon frame.
10. The sleep control method of the wireless local area network as claimed in claim 8, wherein each bit in the buffer data identification field is allocated only to a terminal which has issued a sleep notification.
11. The sleep control method for a wireless local area network according to claim 8, wherein the power saving notification frame further comprises a timestamp field, wherein the timestamp field is obtained by copying the timestamp field in the beacon frame.
12. The sleep control method for wlan according to claim 8, wherein the receiving the power saving notification frame from the workstation comprises:
receiving the power save notification frame from the station at a preset target beacon frame transmission time, wherein the beacon frame is received from the station after the target beacon frame transmission time.
13. The sleep control method for wlan according to claim 8, wherein the receiving the power saving notification frame from the workstation comprises:
receiving the power saving notification frame from the station before a preset target beacon frame transmission time, wherein the beacon frame is received from the station at the preset target beacon frame transmission time, and a frame interval is provided between the power saving notification frame and the beacon frame.
14. The sleep control method for the wireless local area network according to claim 8, wherein the beacon frame is a beacon frame containing a transmission traffic indication field.
15. A sleep control apparatus for a wireless local area network, comprising:
a power saving notification frame determination module adapted to determine a power saving notification frame, the power saving notification frame including a cache data identification field and having a length shorter than a length of a beacon frame;
a power saving notification frame broadcasting module adapted to broadcast the power saving notification frame to a plurality of terminals before broadcasting the beacon frame to the plurality of terminals, so that each terminal determines whether there is cache data to be received according to the cache data identification field, and goes to sleep when there is no cache data to be received, and receives the beacon frame when there is cache data to be received;
the cache data identification field and the flow indication field in the beacon frame have a corresponding relation and are used for indicating whether each terminal has cache data to be received or not;
wherein the power saving notification frame determination module includes:
a bit allocation submodule, adapted to allocate a bit in the buffer data identification field for the terminal whenever a sleep notification is received from the terminal, the bit being used to indicate whether the terminal has buffer data to receive, wherein the sleep notification is used to indicate that the terminal is going to sleep;
the position number sending submodule is suitable for sending the position number of the bit in the cache data identification field to the terminal so that the terminal can position the bit in the cache data identification field according to the position number;
and the configuration submodule is suitable for configuring the bit allocated to each terminal in the cache data identification field according to whether the terminal sending the sleep notification has cache data to be received or not.
16. The sleep control apparatus of wireless lan according to claim 15, wherein the power saving notification frame determining module comprises:
and the copying submodule is suitable for copying the flow indication field in the beacon frame to the cache data identification field in the power saving notification frame.
17. The sleep control apparatus of wireless lan according to claim 15, wherein each bit in the buffer data identification field is allocated only to the terminal which has issued the sleep notification.
18. The sleep control apparatus of a wireless local area network according to claim 15, wherein the power saving notification frame further includes a timestamp field, wherein the timestamp field is obtained by copying a timestamp field in the beacon frame.
19. The sleep control apparatus of wireless lan according to claim 15, wherein the power saving notification frame broadcasting module comprises:
a first power saving notification frame broadcasting sub-module adapted to broadcast the power saving notification frame to the plurality of terminals at a preset target beacon frame transmission time, wherein the beacon frame is broadcast to the plurality of terminals after the target beacon frame transmission time.
20. The sleep control apparatus of wireless lan according to claim 15, wherein the power saving notification frame broadcasting module comprises:
a second power saving notification frame broadcasting sub-module adapted to broadcast the power saving notification frame to the plurality of terminals before a preset target beacon frame transmission time at which the beacon frame is broadcast to the plurality of terminals with a frame interval therebetween.
21. The sleep control apparatus for a wireless local area network according to claim 15, wherein the beacon frame is a beacon frame including a transmission traffic indication field.
22. A sleep control apparatus for a wireless local area network, comprising:
a power saving notification frame receiving module adapted to receive a power saving notification frame from a workstation before receiving a beacon frame from the workstation, the power saving notification frame including a buffer data identification field and having a length shorter than that of the beacon frame;
the cache data determining module is suitable for determining whether cache data to be received exist or not according to the cache data identification field;
the sleep module is suitable for entering sleep when the cache data to be received does not exist;
a beacon frame receiving module adapted to receive the beacon frame from the workstation when there is buffered data to be received;
the cache data identification field and the flow indication field in the beacon frame have a corresponding relation and are used for indicating whether each terminal has cache data to be received or not;
wherein the power saving notification frame receiving module includes:
the sleep notification sending submodule is suitable for sending a sleep notification to the workstation when the workstation is going to sleep; a location number receiving submodule adapted to receive a location number in the cached data identification field from the workstation;
a bit positioning sub-module, adapted to position a bit in the cache data identification field according to the position number, where the bit is allocated in the cache data identification field by the workstation and used for indicating whether to-be-received cache data;
a first power saving notification frame receiving sub-module, adapted to receive the power saving notification frame from the workstation, where the power saving notification frame is obtained by configuring, in the buffer data identification field, bits allocated to each terminal according to whether a terminal sending a sleep notification has buffer data to receive.
23. The sleep control apparatus for a wireless local area network according to claim 22, wherein the buffer data identification field in the power saving notification frame is obtained by copying a traffic indication field in the beacon frame.
24. The sleep control apparatus of wireless lan according to claim 22, wherein each bit in the buffer data identification field is allocated only to the terminal which has issued the sleep notification.
25. The sleep control apparatus of a wireless local area network according to claim 22, wherein the power saving notification frame further comprises a timestamp field, wherein the timestamp field is obtained by copying a timestamp field in the beacon frame.
26. The sleep control apparatus of a wireless local area network according to claim 22, wherein the power saving notification frame receiving module comprises:
a second power saving notification frame receiving sub-module adapted to receive the power saving notification frame from the station at a preset target beacon frame transmission time, wherein the beacon frame is received from the station after the target beacon frame transmission time.
27. The sleep control apparatus of a wireless local area network according to claim 22, wherein the power saving notification frame receiving module comprises:
a third power saving notification frame receiving sub-module adapted to receive the power saving notification frame from the station before a preset target beacon frame transmission time, wherein the beacon frame is received from the station at the preset target beacon frame transmission time, and a frame interval is provided between the power saving notification frame and the beacon frame.
28. The sleep control apparatus for a wireless local area network according to claim 22, wherein the beacon frame is a beacon frame including a transmission traffic indication field.
29. A computer readable storage medium having stored thereon computer instructions, wherein the computer instructions when executed perform the steps of the sleep control method for a wireless local area network according to any one of claims 1 to 7.
30. A computer readable storage medium having stored thereon computer instructions, wherein the computer instructions are executable to perform the steps of the sleep control method for a wireless local area network according to any one of claims 8 to 14.
31. A workstation comprising a memory and a processor, said memory having stored thereon computer instructions executable on said processor, wherein said processor when executing said computer instructions performs the steps of the sleep control method of a wireless local area network according to any of claims 1 to 7.
32. A terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the sleep control method for a wireless local area network according to any one of claims 8 to 14.
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