CN112867106A - Communication method, system and wireless access point - Google Patents

Communication method, system and wireless access point Download PDF

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Publication number
CN112867106A
CN112867106A CN201911186083.7A CN201911186083A CN112867106A CN 112867106 A CN112867106 A CN 112867106A CN 201911186083 A CN201911186083 A CN 201911186083A CN 112867106 A CN112867106 A CN 112867106A
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China
Prior art keywords
terminal
sleep mode
downlink data
super sleep
access point
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CN201911186083.7A
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CN112867106B (en
Inventor
黄海
何峣
陈平辉
王磊
张诺亚
赵静
杨敏维
陈淑珍
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The disclosure relates to a communication method, a communication system and a wireless access point, and relates to the technical field of communication. The method of the present disclosure comprises: the method comprises the steps that a wireless Access Point (AP) receives information which is sent by a terminal and applies for entering a super sleep mode; the terminal in the super sleep mode wakes up under the condition of uplink data to be transmitted; the AP returns information of agreeing to enter the super sleep mode to the terminal under the condition of supporting the super sleep mode of the terminal; and the AP caches the downlink data of the terminal under the condition that the terminal is in the super sleep mode.

Description

Communication method, system and wireless access point
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a communication method, a communication system, and a wireless access point.
Background
Currently, the IEEE 802.11 series supports a series of power saving modes, such as an APSD (automatic power saving mode), a PSMP (multi-polling power saving technology), an SMPS (switched mode switching power supply), and the like, and when a terminal accesses the internet through WiFi, the terminal can use the power saving modes under the scheduling of an AP (Access Point).
Currently, in the above power saving modes, the terminal wakes up periodically to receive downlink data.
Disclosure of Invention
The inventor finds that: for a data terminal (such as an internet of things terminal) supporting WiFi, the data terminal may be in a no-data receiving state for a long time, and a scheme can be adopted to further save the electric quantity of the terminal.
One technical problem to be solved by the present disclosure is: a new power saving mode is provided to further save the electric quantity of the terminal.
According to some embodiments of the present disclosure, there is provided a communication method including: the method comprises the steps that a wireless Access Point (AP) receives information which is sent by a terminal and applies for entering a super sleep mode; the terminal in the super sleep mode wakes up under the condition of uplink data to be transmitted; the AP returns information of agreeing to enter the super sleep mode to the terminal under the condition of supporting the super sleep mode of the terminal; and the AP caches the downlink data of the terminal under the condition that the terminal is in the super sleep mode.
In some embodiments, the information requesting for entry into super sleep mode and the information granting entry into super sleep mode are transmitted via a reserved value of the control frame subtype field.
In some embodiments, the caching, by the AP, downlink data of the terminal when the terminal is in the super sleep mode includes: and the AP reserves the association identification code AID of the terminal under the condition that the terminal is in the super sleep mode, caches the downlink data of the terminal until the terminal wakes up from the super sleep mode and then sends the cached downlink data of the terminal to the terminal.
In some embodiments, the caching, by the AP, downlink data of the terminal when the terminal is in the super sleep mode includes: the AP responds to the terminal entering the super sleep mode, starts a timer, reserves the AID of the terminal and caches the downlink data of the terminal before the timer reaches the preset time, and releases the AID and the downlink data of the terminal under the condition that the timer reaches the preset time.
In some embodiments, the caching, by the AP, downlink data of the terminal when the terminal is in the super sleep mode includes: the AP responds to the fact that the terminal enters a super sleep mode, determines a retention time interval according to a monitoring period or target awakening time and a preset value, retains an association identification code (AID) of the terminal in the retention time interval and caches downlink data of the terminal, and discards the AID and the downlink data of the terminal according to a preset mode under the condition that the retention time interval is exceeded; the preset mode comprises the following steps: at least one of a stacked type and a queued type.
In some embodiments, the AP transmits a broadcast frame, the broadcast frame comprising: the identifier of the terminal corresponding to the downlink data cached by the AP; after the terminal wakes up from the super sleep mode, the downlink data of the AP cache terminal is obtained by monitoring the broadcast frame; the AP receives a power-saving mode-polling PS-Poll request sent by a terminal; and the AP sends confirmation information to the terminal under the condition of confirming the downlink data of the cached terminal, and sends the cached downlink data of the terminal to the terminal.
In some embodiments, after the terminal wakes up from the super sleep mode, acquiring the downlink data of the AP cache terminal by monitoring the broadcast frame includes: after the terminal wakes up from the super sleep mode, monitoring a broadcast frame of the AP, analyzing the broadcast frame, and acquiring values of a Bitmap Control Bitmap and a Partial Virtual Bitmap; determining an association identification code AID corresponding to the downlink data cached by the AP according to the values of the Bitmap Control and the Partial Virtual Bitmap; and determining the downlink data of the AP cache terminal by comparing the AID corresponding to the downlink data stored in the AP with the AID of the AP.
According to still further embodiments of the present disclosure, there is provided a wireless access point including: the receiving module is used for receiving information which is sent by a terminal and applies for entering a super sleep mode; the terminal in the super sleep mode wakes up under the condition of uplink data to be transmitted; the terminal comprises a sending module, a receiving module and a sending module, wherein the sending module is used for returning information of agreeing to enter a super sleep mode to the terminal under the condition of supporting the super sleep mode of the terminal; and the storage module is used for caching the downlink data of the terminal under the condition that the terminal is in the super sleep mode.
In some embodiments, the information requesting for entry into super sleep mode and the information granting entry into super sleep mode are transmitted via a reserved value of the control frame subtype field.
In some embodiments, the storage module is configured to, when the terminal is in the super sleep mode, reserve the association identification code AID of the terminal, and cache the downlink data of the terminal until the terminal wakes up from the super sleep mode and then sends the cached downlink data of the terminal to the terminal.
In some embodiments, the storage module is configured to start a timer in response to the terminal entering the super sleep mode, retain the AID of the terminal and cache downlink data of the terminal before the timer reaches a preset time, and release the AID and the downlink data of the terminal when the timer reaches the preset time.
In some embodiments, the storage module is configured to determine a retention time interval according to a monitoring period or a target wake-up time and a preset value in response to the terminal entering a super sleep mode, retain an association identification code AID of the terminal in the retention time interval and buffer downlink data of the terminal, and discard the AID and the downlink data of the terminal in a preset manner if the retention time interval is exceeded; the preset mode comprises the following steps: at least one of a stacked type and a queued type.
In some embodiments, the transmitting module is further configured to transmit a broadcast frame, the broadcast frame comprising: the identification of the terminal corresponding to the downlink data cached by the wireless access point; after the terminal wakes up from the super sleep mode, the downlink data of the terminal cached by the wireless access point is acquired by monitoring the broadcast frame; and under the condition of confirming the downlink data of the buffer terminal, sending confirmation information to the terminal, and sending the downlink data of the buffer terminal to the terminal. The receiving module is further configured to receive a power saving mode-polling PS-Poll request sent by the terminal.
According to still further embodiments of the present disclosure, there is provided a communication system including: the wireless access point of any of the preceding embodiments; the terminal is used for sending information for applying to enter the super sleep mode to the wireless access point; and receiving the information which is returned by the wireless access point and agrees to enter the super sleep mode.
In some embodiments, the terminal is further configured to acquire downlink data of the terminal cached by the wireless access point by monitoring a broadcast frame after waking up from the super sleep mode; sending a power save mode-Poll (PS-Poll) Poll request to the wireless access point; and receiving the confirmation information sent by the wireless access point and the cached downlink data of the terminal.
In some embodiments, the terminal is further configured to monitor a broadcast frame of the wireless access point after waking up from the super sleep mode, analyze the broadcast frame, and obtain values of the Bitmap Control and the Partial Virtual Bitmap; determining an association identification code AID corresponding to downlink data cached by the wireless access point according to values of the Bitmap Control and the Partial Virtual Bitmap; and determining the downlink data of the wireless access point cache terminal by comparing the AID corresponding to the downlink data stored in the wireless access point with the AID of the wireless access point.
The present disclosure proposes a new power saving mode, i.e., a super sleep mode, in which a terminal in the super sleep mode wakes up when uplink data to be transmitted is pending, and the terminal does not wake up periodically any more. The terminal enters a super sleep mode through negotiation with the AP, and the AP caches downlink data of the terminal under the condition that the terminal is in the super sleep mode. The power saving mode provided by the disclosure can further reduce the energy consumption of the terminal, save the electric quantity of the terminal, buffer the downlink data of the terminal as much as possible, and reduce the loss of the downlink data in the terminal dormancy process.
Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 illustrates a flow diagram of a communication method of some embodiments of the present disclosure.
Fig. 2A illustrates a schematic diagram of an AP discarding buffered data according to some embodiments of the disclosure.
Fig. 2B is a schematic diagram illustrating discarding of buffered data by an AP according to further embodiments of the present disclosure.
Fig. 3 shows a flow diagram of a communication method of further embodiments of the present disclosure.
Fig. 4 illustrates a schematic structural diagram of a wireless access point of some embodiments of the present disclosure.
Fig. 5 illustrates a structural schematic diagram of a communication system of some embodiments of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The present disclosure proposes a new power saving mode, which is described below in conjunction with fig. 1.
Fig. 1 is a flow chart of some embodiments of the disclosed communication method. As shown in fig. 1, the method of this embodiment includes: steps S102 to S106.
In step S102, the terminal receives and transmits information for applying for entering the super sleep mode to the AP.
The terminal in the super sleep mode wakes up under the condition of uplink data to be transmitted, the terminal (STA) in the super sleep mode is always in a sleep state, and the terminal is different from the terminal which supports power saving modes such as APSD, PSMP, SMPS and the like in 802.11 series standards and periodically wakes up, synchronizes with the network, receives and pages the corresponding network. In the super sleep mode, only the terminal can actively initiate a connection request (regularly sending uplink data or having new uplink data). When WiFi is activated and in a connected state, the AP (or customer premises equipment CPE) device sends downlink data or a message to the terminal. And the AP (or CPE equipment) accesses the 4G or 5G base station through an uplink via an air interface, and the downlink provides access for the STA via WiFi.
In step S104, if the super sleep mode of the terminal is supported, the AP returns information that the terminal agrees to enter the super sleep mode.
If the AP does not support the super sleep mode, the information of refusing to enter the super sleep mode can be returned to the terminal. In some embodiments, the information requesting for entry into super sleep mode and the information granting entry into super sleep mode are transmitted via a reserved value of the control frame subtype field. The AP and the terminal may use a control frame (Type 01) in a MAC frame format in the 802.11 standard to interact with each other, and transmit information for applying for entering the super sleep mode and information for agreeing to enter the super sleep mode by using a reserved value (no use is defined in the 802.11 standard as reservation) of a Subtype field in the control frame. For example, 0101 is used as the information that the terminal applies for entering the super sleep mode, the AP replies 0111 with the information indicating approval of entering the super sleep mode, and if the AP does not approve, the AP replies 0110 with the information indicating denial of entering the super sleep mode. The AP and the terminal enter a super sleep mode by adopting the negotiation of the reserved value of the control frame in the standard, can be compatible with the prior art, cannot cause the conflict of the prior standard, and expand the application range of the scheme.
The terminal can enter the super sleep mode after receiving the information agreeing to enter the super sleep mode. If the AP rejects the terminal to enter the super sleep mode, the terminal may select: (1) entering other 802.11 defined power saving modes by sending standard control frames; or (2) to enter into a super sleep mode strongly (the AP may drop the downlink data of the terminal).
In step S106, the AP caches downlink data of the terminal when the terminal is in the super sleep mode.
The AP may buffer the downlink data of the terminal in the following several embodiments.
In some embodiments, when the terminal is in the super sleep mode, the AP retains an AID (association identifier, mapped and bound with the MAC address) of the terminal and caches downlink data of the terminal until the terminal wakes up from the super sleep mode and then sends the cached downlink data of the terminal to the terminal. That is, the AP always retains the AID and the buffer data of the terminal.
In some embodiments, the AP starts a timer in response to the terminal entering the super sleep mode, retains the AID of the terminal and buffers the downlink data of the terminal before the timer reaches a preset time, and releases the AID and the downlink data of the terminal when the timer reaches the preset time. For example, the AP starts a Timer in response to the terminal entering the super sleep mode, and releases the AID and the buffer data of the terminal after counting down the Timeout.
In some embodiments, in response to the terminal entering the super sleep mode, the AP determines a retention time interval according to a listening period (Listen interval) or a Target Wakeup Time (TWT) and a preset value, retains the AID of the terminal and buffers downlink data of the terminal in the retention time interval, and discards the AID and the downlink data of the terminal in a preset manner if the retention time interval is exceeded; the preset mode comprises the following steps: at least one of a stacked type and a queued type. For example, the AP sets the retention time interval according to the Listen interval or the TWT and a preset value n, for example, dropping the MAC buffer frame after n × Listen interval may select queued dropping or stacked dropping. As shown in fig. 2A, the AP adopts a stack-type discarding mode, that is, a last-in first-out discarding mode, to discard buffered downlink MAC frames of the terminal. As shown in fig. 2B, the AP discards buffered MAC frames of the terminal downlink in a queue manner, i.e., a first-in first-out manner.
The above embodiment provides a new power saving mode, i.e. a super sleep mode, in which a terminal in the super sleep mode wakes up when uplink data to be transmitted is pending, and the terminal does not wake up periodically any more. The terminal enters a super sleep mode through negotiation with the AP, and the AP caches downlink data of the terminal under the condition that the terminal is in the super sleep mode. The power saving mode provided by the embodiment can further reduce the energy consumption of the terminal, save the electric quantity of the terminal, buffer the downlink data of the terminal as much as possible, and reduce the loss of the downlink data in the sleep process of the terminal.
Further embodiments of the communication method of the present disclosure are described below in conjunction with fig. 3.
Fig. 3 is a flow chart of further embodiments of the communication method of the present disclosure. As shown in fig. 3, the method of this embodiment includes: steps S302 to S316.
In step S302, the terminal receives and transmits information for requesting entry into the super sleep mode to the AP.
In step S304, if the super sleep mode of the terminal is supported, the AP returns information that the terminal agrees to enter the super sleep mode.
In step S306, the AP caches downlink data of the terminal by using a preset policy when the terminal is in the super sleep mode.
The preset policy is, for example, the foregoing several cache embodiments.
In step S308, the uplink data to be transmitted by the terminal wakes up from the super sleep mode.
In step S310, the terminal learns that the AP buffers the downlink data of the terminal by monitoring the broadcast frame sent by the AP.
In some embodiments, after waking up from the super sleep mode, the terminal monitors a broadcast frame (e.g., Beacon frame) of the AP, parses the broadcast frame, and obtains values of a Bitmap Control and a Partial Virtual Bitmap; determining AID corresponding to the downlink data cached by the AP according to the values of the Bitmap Control and the Partial Virtual Bitmap; and determining the downlink data of the AP cache terminal by comparing the AID corresponding to the downlink data stored in the AP with the AID of the AP. The settings of the Bitmap Control and Partial Virtual Bitmap fields adopt the existing standard, and are not described in detail herein.
In step S312, the terminal transmits a PS-Poll (power save mode-Poll) request to the AP.
In step S314, the AP confirms whether to buffer the downlink data of the terminal, and if so, performs step S316.
For example, the AP compares the AID of the terminal with the AID corresponding to the cached data, and if the AIDs match, it indicates that the downlink data of the terminal is stored.
In step S316, the AP sends acknowledgement information to the terminal, and sends the buffered downlink data of the terminal to the terminal.
The terminal wakes up from the super sleep mode, activates WiFi, monitors the Beacon frame of the AP, judges whether the AP caches the data of the AP according to a Bitmap control and a Partial Virtual Bitmap, if so, sends PS-Poll to acquire the cached data, and the AP sends the cached data corresponding to the MAC address AID of the terminal to the terminal. If the AP does not respond to the PS-Poll request of the terminal, the terminal can be accessed again according to the 802.11 standard flow.
The method of the embodiment slightly modifies the MAC layer of an AP (access point), such as a wireless router, or 4G/5G CPE (customer premise equipment), and the function can be added by a small number of added codes to support terminal equipment in a super sleep mode, so that AID (AID identifier) and downlink cache data of the terminal can be stored for a long time.
The present disclosure also provides a wireless access point, described below with respect to fig. 4.
Fig. 4 is a block diagram of some embodiments of a wireless access point of the present disclosure. As shown in fig. 4, the wireless access point 40 of this embodiment includes: a receiving module 410, a sending module 420 and a storing module 430.
A receiving module 410, configured to receive information, which is sent by a terminal and applies for entering a super sleep mode; wherein, the terminal in the super sleep mode wakes up in case of uplink data to be transmitted.
A sending module 420, configured to return, to the terminal, information that it agrees to enter the super sleep mode when the super sleep mode of the terminal is supported.
In some embodiments, the information requesting for entry into super sleep mode and the information granting entry into super sleep mode are transmitted via a reserved value of the control frame subtype field.
The storage module 430 is configured to cache downlink data of the terminal when the terminal is in the super sleep mode.
In some embodiments, the storage module 430 is configured to, when the terminal is in the super sleep mode, reserve the association identification code AID of the terminal, and buffer the downlink data of the terminal until the terminal wakes up from the super sleep mode and then sends the buffered downlink data of the terminal to the terminal.
In some embodiments, the storage module 430 is configured to start a timer in response to the terminal entering the super sleep mode, retain the association identification code AID of the terminal and buffer the downlink data of the terminal before the timer reaches a preset time, and release the AID and the downlink data of the terminal when the timer reaches the preset time.
In some embodiments, the storage module 430 is configured to, in response to the terminal entering the super sleep mode, determine a retention time interval according to a monitoring period or a target wake-up time and a preset value, retain an association identification code AID of the terminal in the retention time interval and buffer downlink data of the terminal, and discard the AID and the downlink data of the terminal in a preset manner if the retention time interval is exceeded; the preset mode comprises the following steps: at least one of a stacked type and a queued type.
In some embodiments, the transmitting module 420 is further configured to transmit a broadcast frame, the broadcast frame including: the identification of the terminal corresponding to the downlink data cached by the wireless access point; after the terminal wakes up from the super sleep mode, the downlink data of the terminal cached by the wireless access point is acquired by monitoring the broadcast frame; and under the condition of confirming the downlink data of the buffer terminal, sending confirmation information to the terminal, and sending the downlink data of the buffer terminal to the terminal. The receiving module 410 is further configured to receive a power saving mode-polling PS-Poll request sent by the terminal.
The present disclosure also provides a communication system, described below in conjunction with fig. 5.
Fig. 5 is a block diagram of some embodiments of the communication system of the present disclosure. As shown in fig. 5, the communication system 5 of the embodiment includes: the wireless access point AP40 of any of the preceding embodiments, and the terminal 52.
The terminal 52 is used for sending information for applying to enter the super sleep mode to the AP 40; receiving information returned by the AP40 agreeing to enter a super sleep mode.
In some embodiments, the terminal 52 is further configured to learn, by monitoring the broadcast frame of the AP40, that the AP40 buffers the downlink data of the terminal after waking up from the super sleep mode; sending a PS-Poll request to the AP 40; and receiving the acknowledgement information sent by the AP40 and the buffered downlink data of the terminal.
In some embodiments, the terminal 52 is further configured to monitor a broadcast frame of the AP40 after the terminal wakes up from the super sleep mode, parse the broadcast frame, and obtain values of the Bitmap Control and the Partial Virtual Bitmap; determining an association identification code AID corresponding to the downlink data cached by the AP40 according to the values of the Bitmap Control and the Partial Virtual Bitmap; and determining the downlink data of the AP40 cache terminal by comparing the AID corresponding to the downlink data stored by the wireless access point with the AID of the AP.
As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only exemplary of the present disclosure and is not intended to limit the present disclosure, so that any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.

Claims (16)

1. A method of communication, comprising:
the method comprises the steps that a wireless Access Point (AP) receives information which is sent by a terminal and applies for entering a super sleep mode; the terminal in the super sleep mode wakes up under the condition of uplink data to be transmitted;
the AP returns information of agreeing to enter the super sleep mode to the terminal under the condition of supporting the super sleep mode of the terminal;
and the AP caches the downlink data of the terminal under the condition that the terminal is in the super sleep mode.
2. The communication method according to claim 1,
the information for applying for entering the super sleep mode and the information for agreeing to enter the super sleep mode are transmitted through a reserved value of a control frame subtype field.
3. The communication method according to claim 1,
the caching, by the AP, downlink data of the terminal when the terminal is in the super sleep mode includes:
and the AP reserves the association identification code AID of the terminal and caches the downlink data of the terminal under the condition that the terminal is in the super sleep mode until the terminal wakes up from the super sleep mode and then sends the cached downlink data of the terminal to the terminal.
4. The communication method according to claim 1,
the caching, by the AP, downlink data of the terminal when the terminal is in the super sleep mode includes:
and the AP responds that the terminal enters a super sleep mode, starts a timer, reserves the AID of the terminal and caches the downlink data of the terminal before the timer reaches a preset time, and releases the AID and the downlink data of the terminal under the condition that the timer reaches the preset time.
5. The communication method according to claim 1,
the caching, by the AP, downlink data of the terminal when the terminal is in the super sleep mode includes:
the AP responds to the terminal to enter a super sleep mode, determines a retention time interval according to a monitoring period or target wake-up time and a preset value, retains the AID of the terminal in the retention time interval and caches the downlink data of the terminal, and discards the AID and the downlink data of the terminal according to a preset mode when the retention time interval is exceeded; the preset mode comprises the following steps: at least one of a stacked type and a queued type.
6. The communication method of claim 1, further comprising:
the AP sends a broadcast frame, wherein the broadcast frame comprises: the identifier of the terminal corresponding to the downlink data cached by the AP; after the terminal wakes up from the super sleep mode, the downlink data of the terminal cached by the AP is obtained by monitoring the broadcast frame;
the AP receives a power-saving mode-polling PS-Poll request sent by the terminal;
and the AP sends confirmation information to the terminal under the condition of confirming the caching of the downlink data of the terminal, and sends the cached downlink data of the terminal to the terminal.
7. The communication method according to claim 6,
after the terminal wakes up from the super sleep mode, acquiring that the AP caches the downlink data of the terminal by monitoring the broadcast frame comprises the following steps:
after the terminal wakes up from the super sleep mode, monitoring a broadcast frame of the AP, analyzing the broadcast frame, and acquiring values of a Bitmap Control Bitmap and a Partial Virtual Bitmap; determining an association identification code AID corresponding to the downlink data cached by the AP according to the values of the Bitmap Control and the Partial Virtual Bitmap; and determining that the AP caches the downlink data of the terminal by comparing the AID corresponding to the downlink data stored in the AP with the AID of the AP.
8. A wireless access point, comprising:
the receiving module is used for receiving information which is sent by a terminal and applies for entering a super sleep mode; the terminal in the super sleep mode wakes up under the condition of uplink data to be transmitted;
the terminal comprises a sending module and a sending module, wherein the sending module is used for returning information of agreeing to enter a super sleep mode to the terminal under the condition of supporting the super sleep mode of the terminal;
and the storage module is used for caching the downlink data of the terminal under the condition that the terminal is in the super sleep mode.
9. The wireless access point of claim 8,
the information for applying for entering the super sleep mode and the information for agreeing to enter the super sleep mode are transmitted through a reserved value of a control frame subtype field.
10. The wireless access point of claim 8,
the storage module is used for reserving the association identification code AID of the terminal and caching the downlink data of the terminal under the condition that the terminal is in the super sleep mode until the terminal wakes up from the super sleep mode and then sends the cached downlink data of the terminal to the terminal.
11. The wireless access point of claim 8,
the storage module is used for responding to the fact that the terminal enters the super sleep mode, starting a timer, reserving the AID of the terminal and caching the downlink data of the terminal before the time of the timer reaches the preset time, and releasing the AID and the downlink data of the terminal under the condition that the time of the timer reaches the preset time.
12. The wireless access point of claim 8,
the storage module is used for responding to the fact that the terminal enters a super sleep mode, determining a retention time interval according to a monitoring period or target wake-up time and a preset value, retaining the association identification code AID of the terminal in the retention time interval and caching downlink data of the terminal, and discarding the AID and the downlink data of the terminal according to a preset mode when the association identification code AID exceeds the retention time interval; the preset mode comprises the following steps: at least one of a stacked type and a queued type.
13. The wireless access point of claim 8,
the sending module is further configured to send a broadcast frame, where the broadcast frame includes: the identification of the terminal corresponding to the downlink data cached by the wireless access point; after the terminal wakes up from the super sleep mode, the terminal acquires that the wireless access point caches the downlink data of the terminal by monitoring the broadcast frame; and under the condition of confirming that the downlink data of the terminal is cached, sending confirmation information to the terminal, and sending the cached downlink data of the terminal to the terminal.
The receiving module is further configured to receive a power saving mode-polling PS-Poll request sent by the terminal.
14. A communication system, comprising:
the wireless access point of any one of claims 8-13; and
the terminal is used for sending information for applying to enter a super sleep mode to the wireless access point; and receiving the information which is returned by the wireless access point and agrees to enter the super sleep mode.
15. The communication system of claim 14,
the terminal is also used for acquiring downlink data cached by the wireless access point through monitoring the broadcast frame of the wireless access point after the terminal wakes up from the super sleep mode; sending a power save mode-Poll (PS-Poll) Poll request to the wireless access point; and receiving the confirmation information sent by the wireless access point and the cached downlink data of the terminal.
16. The communication system of claim 15,
the terminal is also used for monitoring a broadcast frame of the wireless access point after waking up from a super sleep mode, analyzing the broadcast frame and acquiring values of Bitmap Control Bitmap and partial virtual Bitmap; determining an association identification code AID corresponding to downlink data cached by the wireless access point according to the values of the Bitmap Control and the Partial Virtual Bitmap; and determining that the wireless access point caches the downlink data of the terminal by comparing the AID corresponding to the downlink data stored in the wireless access point with the AID of the wireless access point.
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Citations (3)

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Publication number Priority date Publication date Assignee Title
US20130316769A1 (en) * 2012-05-25 2013-11-28 Samsung Electronics Co. Ltd. Dormancy mode control method and apparatus of portable terminal
US20140313957A1 (en) * 2011-08-09 2014-10-23 Dong-Shan Bao Method and Device for Power Saving
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US20140313957A1 (en) * 2011-08-09 2014-10-23 Dong-Shan Bao Method and Device for Power Saving
US20130316769A1 (en) * 2012-05-25 2013-11-28 Samsung Electronics Co. Ltd. Dormancy mode control method and apparatus of portable terminal
CN110149662A (en) * 2018-02-13 2019-08-20 中兴通讯股份有限公司 A kind of cell processing method, device and system

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