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CN109429299B - Communication method, communication device and communication equipment of wireless local area network - Google Patents

Communication method, communication device and communication equipment of wireless local area network Download PDF

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Publication number
CN109429299B
CN109429299B CN201710562658.5A CN201710562658A CN109429299B CN 109429299 B CN109429299 B CN 109429299B CN 201710562658 A CN201710562658 A CN 201710562658A CN 109429299 B CN109429299 B CN 109429299B
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message frame
wake
station
access point
association
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CN109429299A (en
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董贤东
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Meizu Technology Co Ltd
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Meizu Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)

Abstract

The invention provides a communication method, a communication device and communication equipment of a wireless local area network, wherein the communication method of the wireless local area network for a station which establishes association with a first access point comprises the following steps: receiving a wake-up message frame sent by a second access point, wherein the wake-up message frame comprises an identifier indicating that the first access point leaves the coverage area of the station; and awakening a main communication interface of the station according to the awakening message frame so as to establish association with the second access point and receive the downlink data frame cached by the second access point for the station. Through the technical scheme of the invention, the new access point can rediscover the station in the WUR state to establish the association in time, so that the power consumption of the equipment is effectively reduced, the equipment is more power-saving, and the requirement of IEEE802.11ba is met.

Description

Communication method, communication device and communication equipment of wireless local area network
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a communication method of a wireless local area network, a communication apparatus of the wireless local area network, and a communication device.
Background
In 2016, 802.11 of the Institute of Electrical and Electronics Engineers (IEEE) has established the next-generation Wi-Fi (Wireless Fidelity) research group wur (wake Up receiver), i.e., IEEE802.11ba, mainly applied to the internet of things, in order to save the power consumption of the device as much as possible, and most mainly, in order to save the power consumption of the device as much as possible by the device receiving the wake-Up frame (wake-Up message frame), wherein the power consumption required by the device to receive the wake-Up frame is not more than 1 mW.
Currently, in order to make a Station (STA) device save more Power in IEEE802.11ba, a main communication interface is in a Power-off state (Power-off state), i.e., in a sleep state, and a secondary communication interface is in a Power-on state (Power-on state), i.e., in a communication state, so as to listen and receive an awake message frame sent by an Access Point (AP) thereto, i.e., the Station device is in a WUR state.
The purpose of the wake-up message frame is to wake up a main communication interface of a station for data communication, and in the related art, it is indicated that station equipment should enter a WUR state when an AP does not have a requirement for data communication with STAs; when the AP leaves the coverage of STAs with which association has been established, STAs may also enter the WUR state, which may result in that the STAs may not receive the wake-up message frame sent by the AP, so that the STAs are in a non-target state.
Therefore, a mechanism is needed to enable a new access point to re-discover a station in a WUR state, so that the station can quickly establish an association with the new access point to meet the requirements of IEEE802.11ba in case the access point with which the station has established an association leaves its coverage.
Disclosure of Invention
Based on at least one of the above technical problems, the present invention provides a new communication scheme for a wireless local area network, which enables a new access point to discover a station in a WUR state again, so that the station can establish association with the new access point quickly when the access point with which association has been established leaves its coverage, thereby effectively reducing power consumption of the device, enabling the device to save more power, and meeting the requirements of IEEE802.11 ba.
In view of the above, according to a first aspect of the present invention, a communication method of a wireless local area network is provided, where the station is used for a station, and the station has established association with a first access point, and the communication method of the wireless local area network includes: receiving a wake-up message frame sent by a second access point, wherein the wake-up message frame comprises an identifier indicating that the first access point leaves the coverage area of the station; and awakening a main communication interface of the station according to the awakening message frame so as to establish association with the second access point and receive the downlink data frame cached by the second access point for the station.
In the technical scheme, when a first access point which has established association with a station leaves the coverage of the station and the station is in a WUR state, in order to avoid that the station is in a diffuse and useless state because the station cannot establish normal data communication with the first access point, a new second access point is allowed to discover the station again and send a wake-up message frame to the station to wake up a main communication interface of the station, specifically, the wake-up message frame sent by the second access point comprises an identifier which indicates that the first access point leaves the coverage of the station, so that the station and the second access point can quickly establish association, thereby enabling the station to receive downlink data frames which are cached by the second access point, and also avoiding that the station is in the diffuse and useless state that the main communication interface cannot be waken up until the secondary communication interface wakes up, specifically, the station receives the wake-up message frame sent by the second access point through the communication interface, and the main communication interface awakened according to the awakening message frame receives the downlink data frame, so that the timely communication between the station and the new access point is realized, the power consumption of the equipment is effectively reduced, the equipment is more power-saving, and the requirement of IEEE802.11ba is met.
The primary communication interface and the secondary communication interface may be different physical entities, or may be the same set of physical entities, and are only logically separated.
In the above technical solution, preferably, the wake-up message frame includes a unicast wake-up message frame, a multicast wake-up message frame, and a broadcast wake-up message frame; when the wake-up message frame is a unicast wake-up message frame, receiving the wake-up message frame according to the first association identifier of the station; when the wake-up message frame is a multicast wake-up message frame or a broadcast wake-up message frame, receiving the wake-up message frame according to a second association identifier of the station, which is different from the first association identifier; wherein the first association identifier and the second association identifier of the station are informed to the second access point by the first access point.
In this technical solution, different receiving modes of the wake-up message frame may be specifically set according to different frame types of the wake-up message frame, so as to save more power for the device, and further, the wake-up message frame mainly includes: the method comprises the steps of realizing a unicast awakening message frame of a one-to-one communication mode of a sender to a receiver, realizing a multicast awakening message frame of a one-to-one group communication mode of the sender to the receiver, and realizing a broadcast awakening message frame of all the communication modes of the sender to the receiver.
Further, in order to improve the receiving efficiency of the station for the wake-up message frame, the first access point may specifically send, through interaction between the first access point and the second access point, the association identifier of the station serving as the receiving address of the wake-up message frame and corresponding to the frame type of the wake-up message frame to the second access point, so as to avoid resetting the receiving address when the second access point sends the wake-up message frame to the station, and to ensure smooth delivery of the wake-up message frame to the secondary communication interface of the station, specifically, when the wake-up message frame is a unicast wake-up message frame, the station receives the unicast wake-up message frame according to the first association identifier thereof, and when the wake-up message frame is a multicast wake-up message frame or a broadcast wake-up message frame, the station receives the multicast wake-up message frame or the broadcast wake-up message frame according to the second association identifier different from the first association identifier thereof, wherein, the first Association Identifier and the second Association Identifier may be different AIDs (Association identifiers) of the stations, respectively.
And after the second access point obtains the AID of the station, the AID is not allocated to other STAs establishing initial connection with the station, and if the AID is consistent with the AID allocated by the second access point to other STAs already establishing association with the second access point, the second access point allocates a new AID to other STAs already establishing association with the second access point, so as to avoid address errors and collision.
In any of the foregoing technical solutions, preferably, the step of receiving the wake-up message frame sent by the second access point specifically includes: and receiving the wake-up message frame according to a preset wake-up period, wherein the preset wake-up period is determined by the negotiation between the station and the first access point.
In the technical scheme, the first access point interacts with the second access point to inform the second access point of a receiving address of a wake-up message frame of a main communication interface for waking up a site, and simultaneously informs the second access point of a wake-up period of a secondary communication interface of the site, so that the first access point sends the wake-up message frame to the secondary communication interface of the site according to the period, time of the station in an idle state can be shortened as much as possible under the condition that the site is not changed, association can be quickly established with the second access point after the wake-up message frame sent by the second access point is accurately and efficiently received, and the first access point enters a data communication state, power consumption of equipment is reduced, and the equipment is more power-saving.
In the above scheme, if the wakeup period received by the second access point is smaller than the preset minimum wakeup period for sending the wakeup message frame, the wakeup period is taken as the minimum wakeup period for sending the wakeup message frame.
According to the second aspect of the present invention, there is also provided a communication apparatus of a wireless local area network, which is used for a station that has established an association with a first access point, and includes: a receiving module, configured to receive a wake-up message frame sent by a second access point, where the wake-up message frame includes an identifier indicating that the first access point has left the coverage area of the station; and the awakening module is used for awakening the main communication interface of the station according to the awakening message frame received by the receiving module so as to establish association with the second access point and receive the downlink data frame cached by the second access point for the station.
In the technical scheme, when a first access point which has established association with a station leaves the coverage of the station and the station is in a WUR state, in order to avoid that the station is in a diffuse and useless state because the station cannot establish normal data communication with the first access point, a new second access point is allowed to discover the station again and send a wake-up message frame to the station to wake up a main communication interface of the station, specifically, the wake-up message frame sent by the second access point comprises an identifier which indicates that the first access point leaves the coverage of the station, so that the station and the second access point can quickly establish association, thereby enabling the station to receive downlink data frames which are cached by the second access point, and also avoiding that the station is in the diffuse and useless state that the main communication interface cannot be waken up until the secondary communication interface wakes up, specifically, the station receives the wake-up message frame sent by the second access point through the communication interface, and the main communication interface awakened according to the awakening message frame receives the downlink data frame, so that the timely communication between the station and the new access point is realized, the power consumption of the equipment is effectively reduced, the equipment is more power-saving, and the requirement of IEEE802.11ba is met.
The primary communication interface and the secondary communication interface may be different physical entities, or may be the same set of physical entities, and are only logically separated.
In the above technical solution, preferably, the wake-up message frame includes a unicast wake-up message frame, a multicast wake-up message frame, and a broadcast wake-up message frame; and the receiving module is specifically configured to: when the wake-up message frame is a unicast wake-up message frame, receiving the wake-up message frame according to a first association identifier of the station; when the wake-up message frame is a multicast wake-up message frame or a broadcast wake-up message frame, receiving the wake-up message frame according to a second association identifier of the station, which is different from the first association identifier; wherein the first association identifier and the second association identifier of the station are informed to the second access point by the first access point.
In this technical solution, different receiving modes of the wake-up message frame may be specifically set according to different frame types of the wake-up message frame, so as to save more power for the device, and further, the wake-up message frame mainly includes: the method comprises the steps of realizing a unicast awakening message frame of a one-to-one communication mode of a sender to a receiver, realizing a multicast awakening message frame of a one-to-one group communication mode of the sender to the receiver, and realizing a broadcast awakening message frame of all the communication modes of the sender to the receiver.
Further, in order to improve the receiving efficiency of the station for the wake-up message frame, the first access point may specifically send, through interaction between the first access point and the second access point, the association identifier of the station serving as the receiving address of the wake-up message frame and corresponding to the frame type of the wake-up message frame to the second access point, so as to avoid resetting the receiving address when the second access point sends the wake-up message frame to the station, and to ensure smooth delivery of the wake-up message frame to the secondary communication interface of the station, specifically, when the wake-up message frame is a unicast wake-up message frame, the station receives the unicast wake-up message frame according to the first association identifier thereof, and when the wake-up message frame is a multicast wake-up message frame or a broadcast wake-up message frame, the station receives the multicast wake-up message frame or the broadcast wake-up message frame according to the second association identifier different from the first association identifier thereof, wherein, the first association identifier and the second association identifier may be different AIDs of the station, respectively.
And after the second access point obtains the AID of the station, the AID is not allocated to other STAs establishing initial connection with the station, and if the AID is consistent with the AID allocated by the second access point to other STAs already establishing association with the second access point, the second access point allocates a new AID to other STAs already establishing association with the second access point, so as to avoid address errors and collision.
In any of the above technical solutions, preferably, the receiving module is specifically configured to: and receiving the wake-up message frame according to a preset wake-up period, wherein the preset wake-up period is determined by the negotiation between the station and the first access point.
In the technical scheme, the first access point interacts with the second access point to inform the second access point of a receiving address of a wake-up message frame of a main communication interface for waking up a site, and simultaneously informs the second access point of a wake-up period of a secondary communication interface of the site, so that the first access point sends the wake-up message frame to the secondary communication interface of the site according to the period, time of the station in an idle state can be shortened as much as possible under the condition that the site is not changed, association can be quickly established with the second access point after the wake-up message frame sent by the second access point is accurately and efficiently received, and the first access point enters a data communication state, power consumption of equipment is reduced, and the equipment is more power-saving.
In the above scheme, if the wakeup period received by the second access point is smaller than the preset minimum wakeup period for sending the wakeup message frame, the wakeup period is taken as the minimum wakeup period for sending the wakeup message frame.
According to the third aspect of the present invention, there is further provided a communication method of a wireless local area network, which is used for an access point, and the communication method of the wireless local area network includes: generating a wake-up message frame for waking up a main communication interface of a station which has established association with a target access point; and sending the wake-up message frame to a secondary communication interface of the station, wherein the wake-up message frame comprises an identifier indicating that the target access point leaves the coverage area of the station.
In the technical solution, when a target access point that has been associated with a station leaves a coverage area of the station and the station is in a WUR state, in order to avoid that the station is in a non-destination state due to the fact that the station cannot establish normal data communication with the target access point, the station can be rediscovered by generating and sending a wakeup message frame to the station to wake up a main communication interface of the station for data communication, specifically, the wakeup message frame includes an identifier indicating that the target access point has left the coverage area of the station, so as to quickly establish association with the station, so that the station can receive a downlink data frame buffered by a new access point, and also avoid that the station is in the non-destination state in which the main communication interface cannot be woken up until the secondary communication interface wakes up, specifically, the wakeup message frame is sent to a secondary communication interface of the station, and sending the downlink data frame cached for the main communication interface of the station to the main communication interface of the station after waking up the main communication interface of the station according to the wake-up message frame, so as to realize timely communication with the station in the WUR state, thereby effectively reducing the power consumption of the equipment, leading the equipment to be more power-saving and meeting the requirements of IEEE802.11 ba.
The primary communication interface and the secondary communication interface of the station may be different physical entities, or may be the same set of physical entities, and are only logically separated.
In the above technical solution, preferably, the wake-up message frame includes a unicast wake-up message frame, a multicast wake-up message frame, and a broadcast wake-up message frame; when the wake-up message frame is a unicast wake-up message frame, setting a receiving address of the wake-up message frame as a first associated identifier of the station; when the wake-up message frame is a multicast wake-up message frame or a multicast wake-up message frame, setting a receiving address of the wake-up message frame as a second association identifier of the station; wherein the first association identifier and the second association identifier of the station are received from the target access point.
In this technical solution, different receiving modes of the wake-up message frame may be specifically set according to different frame types of the wake-up message frame, so as to save more power for the device, and further, the wake-up message frame mainly includes: the method comprises the steps of realizing a unicast awakening message frame of a one-to-one communication mode of a sender to a receiver, realizing a multicast awakening message frame of a one-to-one group communication mode of the sender to the receiver, and realizing a broadcast awakening message frame of all the communication modes of the sender to the receiver.
In order to improve the receiving efficiency of the station for the wake-up message frame, specifically, by interacting with the target access point, receiving the association identifier of the station used as the receiving address of the wake-up message frame and corresponding to the frame type of the wake-up message frame sent by the target access point, to avoid resetting its receiving address when sending the wake-up message frame to the station and to ensure that the wake-up message frame is successfully delivered to the secondary communication interface of the station, and, in particular, when the wake-up message frame is a unicast wake-up message frame, setting the receiving address of the unicast wake-up message frame as a first association identifier of the station, when the wake-up message frame is a multicast wake-up message frame or a broadcast wake-up message frame, setting the receiving address of the multicast wake-up message frame or the broadcast wake-up message frame as a second association identifier of the station, which is different from the first association identifier, the first association identifier and the second association identifier may be different AIDs of the station, respectively.
And if the AID is consistent with the AID allocated to other STAs which are already associated with the AID, allocating a new AID to other STAs which are already associated with the AID, so as to avoid conflict caused by address errors.
In any of the above technical solutions, preferably, before sending the wake-up message frame to the primary communication interface of the station, the communication method of the wireless local area network further includes: and receiving the wake-up period of the secondary communication interface which is determined by the negotiation between the target access point and the station, so as to refer to the wake-up message frame sent to the station.
In the technical scheme, while interacting with a target access point to acquire a receiving address of a wake-up message frame for waking up a main communication interface of a station, a wake-up period of a secondary communication interface of the station can be acquired from the target access point, so that the wake-up message frame can be sent to the secondary communication interface of the station according to the period, time of the station in an idle state can be shortened as much as possible under the condition that the station does not change, the station can be quickly associated with a new access point after accurately and efficiently receiving the wake-up message frame sent by the new access point, and the station can enter a data communication state to reduce power consumption of equipment, so that the equipment saves more power.
In the above scheme, if the wakeup period received from the target access point is smaller than the preset minimum wakeup period for sending the wakeup message frame, the wakeup period is taken as the minimum wakeup period for sending the wakeup message frame.
According to the fourth aspect of the present invention, there is further provided a communication apparatus of a wireless local area network, configured to be used in an access point, the communication apparatus of the wireless local area network including: a generation module, configured to generate a wake-up message frame, where the wake-up message frame is used to wake up a main communication interface of a station that has established association with a target access point; a sending module, configured to send the wake-up message frame generated by the generating module to a secondary communication interface of the station, where the wake-up message frame includes an identifier indicating that the target access point has left a coverage area of the station.
In the technical solution, when a target access point that has been associated with a station leaves a coverage area of the station and the station is in a WUR state, in order to avoid that the station is in a non-destination state due to the fact that the station cannot establish normal data communication with the target access point, the station can be rediscovered by generating and sending a wakeup message frame to the station to wake up a main communication interface of the station for data communication, specifically, the wakeup message frame includes an identifier indicating that the target access point has left the coverage area of the station, so as to quickly establish association with the station, so that the station can receive a downlink data frame buffered by a new access point, and also avoid that the station is in the non-destination state in which the main communication interface cannot be woken up until the secondary communication interface wakes up, specifically, the wakeup message frame is sent to a secondary communication interface of the station, and sending the downlink data frame cached for the main communication interface of the station to the main communication interface of the station after waking up the main communication interface of the station according to the wake-up message frame, so as to realize timely communication with the station in the WUR state, thereby effectively reducing the power consumption of the equipment, leading the equipment to be more power-saving and meeting the requirements of IEEE802.11 ba.
The primary communication interface and the secondary communication interface of the station may be different physical entities, or may be the same set of physical entities, and are only logically separated.
In the above technical solution, preferably, the wake-up message frame includes a unicast wake-up message frame, a multicast wake-up message frame, and a broadcast wake-up message frame; and the communication device of the wireless local area network further comprises a setting module, wherein the setting module is used for: when the wake-up message frame is a unicast wake-up message frame, setting a receiving address of the wake-up message frame as a first associated identifier of the station; when the wake-up message frame is a multicast wake-up message frame or a multicast wake-up message frame, setting a receiving address of the wake-up message frame as a second association identifier of the station; wherein the first association identifier and the second association identifier of the station are received from the target access point.
In this technical solution, different receiving modes of the wake-up message frame may be specifically set according to different frame types of the wake-up message frame, so as to save more power for the device, and further, the wake-up message frame mainly includes: the method comprises the steps of realizing a unicast awakening message frame of a one-to-one communication mode of a sender to a receiver, realizing a multicast awakening message frame of a one-to-one group communication mode of the sender to the receiver, and realizing a broadcast awakening message frame of all the communication modes of the sender to the receiver.
In order to improve the receiving efficiency of the station for the wake-up message frame, specifically, by interacting with the target access point, receiving the association identifier of the station used as the receiving address of the wake-up message frame and corresponding to the frame type of the wake-up message frame sent by the target access point, to avoid resetting its receiving address when sending the wake-up message frame to the station and to ensure that the wake-up message frame is successfully delivered to the secondary communication interface of the station, and, in particular, when the wake-up message frame is a unicast wake-up message frame, setting the receiving address of the unicast wake-up message frame as a first association identifier of the station, when the wake-up message frame is a multicast wake-up message frame or a broadcast wake-up message frame, setting the receiving address of the multicast wake-up message frame or the broadcast wake-up message frame as a second association identifier of the station, which is different from the first association identifier, the first association identifier and the second association identifier may be different AIDs of the station, respectively.
And if the AID is consistent with the AID allocated to other STAs which are already associated with the AID, allocating a new AID to other STAs which are already associated with the AID, so as to avoid conflict caused by address errors.
In any of the above technical solutions, preferably, the communication apparatus of the wireless local area network further includes: a receiving module, configured to receive, before the sending module sends the wakeup message frame to the primary communication interface of the station, a wakeup period of a secondary communication interface that is determined by negotiation between the target access point and the station, so as to refer to sending the wakeup message frame to the station.
In the technical scheme, while interacting with a target access point to acquire a receiving address of a wake-up message frame for waking up a main communication interface of a station, a wake-up period of a secondary communication interface of the station can be acquired from the target access point, so that the wake-up message frame can be sent to the secondary communication interface of the station according to the period, time of the station in an idle state can be shortened as much as possible under the condition that the station does not change, the station can be quickly associated with a new access point after accurately and efficiently receiving the wake-up message frame sent by the new access point, and the station can enter a data communication state to reduce power consumption of equipment, so that the equipment saves more power.
In the above scheme, if the wakeup period received from the target access point is smaller than the preset minimum wakeup period for sending the wakeup message frame, the wakeup period is taken as the minimum wakeup period for sending the wakeup message frame.
According to a fifth aspect of the present invention, there is also provided a communication device, comprising: communication means of a wireless local area network as described in the second aspect above; and/or a communication device of a wireless local area network as described in the fourth aspect above.
Through the technical scheme of the invention, the new access point can rediscover the station in the WUR state, so that the station can quickly establish association with the new access point when the access point which is associated with the station leaves the coverage range of the access point, thereby effectively reducing the power consumption of the equipment, saving more power of the equipment and meeting the requirements of IEEE802.11 ba.
Drawings
Fig. 1 shows a flow chart of a communication method for a wireless local area network of a station according to an embodiment of the present invention;
fig. 2 shows a schematic block diagram of a communication device for a wireless local area network of a station of an embodiment of the present invention;
fig. 3 is a flow chart illustrating a communication method for a wireless lan of an access point according to an embodiment of the present invention;
fig. 4 shows a schematic block diagram of a communication device for a wireless local area network of an access point according to an embodiment of the present invention;
fig. 5 shows an interaction diagram of a communication system of a wireless local area network according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Fig. 1 is a flowchart illustrating a communication method for a wireless local area network of a station according to an embodiment of the present invention, where the station has established an association with a first access point.
As shown in fig. 1, the communication method for a wireless local area network of a station according to an embodiment of the present invention specifically includes the following steps:
step 102, receiving a wake-up message frame sent by a second access point, where the wake-up message frame includes an identifier indicating that the first access point has left the coverage area of the station.
It can be understood that the wake-up message frame includes a unicast wake-up message frame, a multicast wake-up message frame and a broadcast wake-up message frame, that is, the wake-up message frame mainly includes: the method comprises the steps of realizing a unicast awakening message frame of a one-to-one communication mode of a sender to a receiver, realizing a multicast awakening message frame of a one-to-one group communication mode of the sender to the receiver, and realizing a broadcast awakening message frame of all the communication modes of the sender to the receiver.
Further, different receiving manners of the wake-up message frame may be set according to different frame types of the wake-up message frame, so as to enable the device to save more power, specifically, the scheme for receiving the wake-up message frame sent by the second access point in step 102 may be specifically implemented as:
when the wake-up message frame is a unicast wake-up message frame, receiving the wake-up message frame according to a first association identifier of the station; when the wake-up message frame is a multicast wake-up message frame or a broadcast wake-up message frame, receiving the wake-up message frame according to a second association identifier of the station, which is different from the first association identifier; wherein the first association identifier and the second association identifier of the station are informed to the second access point by the first access point.
It can be understood that, in order to improve the receiving efficiency of the station for the wake-up message frame, the first access point sends the association identifier of the station serving as the receiving address of the wake-up message frame corresponding to the frame type of the wake-up message frame to the second access point through interaction between the first access point and the second access point, so as to avoid resetting the receiving address when the second access point sends the wake-up message frame to the station, and to ensure that the wake-up message frame is successfully sent to the secondary communication interface of the station, specifically, when the wake-up message frame is a unicast wake-up message frame, the station receives the unicast wake-up message frame according to the first association identifier thereof, and when the wake-up message frame is a multicast wake-up message frame or a broadcast wake-up message frame, the station receives the multicast wake-up message frame or the broadcast wake-up message frame according to the second association identifier different from the first association identifier thereof, the first association identifier and the second association identifier may be different AIDs of the station, respectively.
And after the second access point obtains the AID of the station, the AID is not allocated to other STAs establishing initial connection with the station, and if the AID is consistent with the AID allocated by the second access point to other STAs already establishing association with the second access point, the second access point allocates a new AID to other STAs already establishing association with the second access point, so as to avoid address errors and collision.
Further, the first association identification may be a general AID, and the second association identification may be a special AID, such as "1111111111111111", "1111000011110000", "0000000000000000", and the like.
Further, in the above embodiment, the scheme of receiving the wake-up message frame sent by the second access point in step 102 may further specifically be implemented as: and receiving the wake-up message frame according to a preset wake-up period, wherein the preset wake-up period is determined by the negotiation between the station and the first access point.
It can be understood that, while the first access point interacts with the second access point to inform the second access point of the receiving address of the wake-up message frame for waking up the primary communication interface of the station, the first access point can inform the second access point of the wake-up period of the secondary communication interface of the station, so that the first access point sends the wake-up message frame to the secondary communication interface of the station according to the wake-up period, thereby ensuring that the time in the random state can be shortened as much as possible without any change of the station, and after the wake-up message frame sent by the second access point is accurately and efficiently received, association can be quickly established with the second access point, and the first access point can enter a data communication state, thereby reducing power consumption of the device, and enabling the device to be more power-saving.
That is to say, when the first access point interacts with the second access point, mapping between the wake-up period information bit and the AID may be implemented to ensure that the secondary communication interface of the station can successfully receive the wake-up message frame sent by the second access point.
In the above embodiment, if the wakeup period received by the second access point is smaller than the preset minimum wakeup period for sending the wakeup message frame, the wakeup period is used as the minimum wakeup period for sending the wakeup message frame.
And 104, waking up a main communication interface of the station according to the wake-up message frame to establish association with the second access point and receive a downlink data frame cached by the second access point for the station.
To sum up, in the above embodiments, when a first access point that has already established association with a station leaves the coverage of the station and the station is in a WUR state, in order to avoid a situation where the station is in a non-destination state due to the fact that the station cannot establish normal data communication with the first access point, a new second access point is allowed to discover the station again and send a wake-up message frame to wake up a main communication interface of the station, specifically, the wake-up message frame sent by the second access point includes an identifier indicating that the first access point has left the coverage of the station, so as to enable the station to quickly establish association with the second access point, so that the station can receive downlink data frames buffered by the second access point, and also avoid a non-destination state where the main communication interface cannot be woken up until the second access point wakes up, specifically, the station receives the wake-up message sent by the second access point through the communication interface, and the main communication interface awakened according to the awakening message frame receives the downlink data frame, so that the timely communication between the station and the new access point is realized, the power consumption of the equipment is effectively reduced, the equipment is more power-saving, and the requirement of IEEE802.11ba is met.
The primary communication interface and the secondary communication interface may be different physical entities, or may be the same set of physical entities, and are only logically separated.
The main body of the communication method shown in fig. 1 may be a station device in a network formed by an access point and a station, such as a smart phone or a PDA (Personal Digital Assistant).
The interface of the station device receiving the wake-up message frame is a secondary communication interface, and the purpose of receiving the wake-up message frame is to wake up a primary communication interface of the station device for performing communication to obtain a downlink data frame buffered by the access point device, and specifically, the primary and secondary communication interfaces may be antennas.
Fig. 2 shows a schematic block diagram of a communication device for a wireless local area network of a station, wherein the station has established an association with a first access point, according to an embodiment of the invention.
As shown in fig. 2, a communication apparatus 20 for a wireless local area network of a station according to an embodiment of the present invention includes: a receiving module 202 and a wake-up module 204.
The receiving module 202 is configured to receive a wake-up message frame sent by a second access point, where the wake-up message frame includes an identifier indicating that the first access point has left the coverage of the station; the wake-up module 204 is configured to wake up the main communication interface of the station according to the wake-up message frame received by the receiving module 202, so as to establish association with the second access point and receive a downlink data frame cached by the second access point for the station.
In this embodiment, when a first access point that has already established association with a station leaves the coverage of the station and makes the station in a WUR state, in order to avoid a situation where the station is in a non-destination state due to the fact that the station cannot establish normal data communication with the first access point, a new second access point is allowed to discover the station again and send a wake-up message frame to wake up a main communication interface of the station, specifically, the wake-up message frame sent by the second access point includes an identifier indicating that the first access point has left the coverage of the station, so as to quickly establish association between the station and the second access point, so that the station can receive downlink data frames buffered by the second access point, and also avoid a non-destination state where the main communication interface cannot be woken up until a secondary communication interface wakes up, specifically, the station receives the wake-up message sent by the second access point through the second communication interface, and the main communication interface awakened according to the awakening message frame receives the downlink data frame, so that the timely communication between the station and the new access point is realized, the power consumption of the equipment is effectively reduced, the equipment is more power-saving, and the requirement of IEEE802.11ba is met.
The primary communication interface and the secondary communication interface may be different physical entities, or may be the same set of physical entities, and are only logically separated.
Further, in the above embodiment, the wake-up message frame includes a unicast wake-up message frame, a multicast wake-up message frame, and a broadcast wake-up message frame; and the receiving module 202 is specifically configured to: when the wake-up message frame is a unicast wake-up message frame, receiving the wake-up message frame according to a first association identifier of the station; when the wake-up message frame is a multicast wake-up message frame or a broadcast wake-up message frame, receiving the wake-up message frame according to a second association identifier of the station, which is different from the first association identifier; wherein the first association identifier and the second association identifier of the station are informed to the second access point by the first access point.
In this embodiment, different receiving manners of the wake-up message frame may be specifically set according to different frame types of the wake-up message frame, so as to save more power for the device, and further, the wake-up message frame mainly includes: the method comprises the steps of realizing a unicast awakening message frame of a one-to-one communication mode of a sender to a receiver, realizing a multicast awakening message frame of a one-to-one group communication mode of the sender to the receiver, and realizing a broadcast awakening message frame of all the communication modes of the sender to the receiver.
Further, in order to improve the receiving efficiency of the station for the wake-up message frame, the first access point may specifically send, through interaction between the first access point and the second access point, the association identifier of the station serving as the receiving address of the wake-up message frame and corresponding to the frame type of the wake-up message frame to the second access point, so as to avoid resetting the receiving address when the second access point sends the wake-up message frame to the station, and to ensure smooth delivery of the wake-up message frame to the secondary communication interface of the station, specifically, when the wake-up message frame is a unicast wake-up message frame, the station receives the unicast wake-up message frame according to the first association identifier thereof, and when the wake-up message frame is a multicast wake-up message frame or a broadcast wake-up message frame, the station receives the multicast wake-up message frame or the broadcast wake-up message frame according to the second association identifier different from the first association identifier thereof, wherein, the first association identifier and the second association identifier may be different AIDs of the station, respectively.
And after the second access point obtains the AID of the station, the AID is not allocated to other STAs establishing initial connection with the station, and if the AID is consistent with the AID allocated by the second access point to other STAs already establishing association with the second access point, the second access point allocates a new AID to other STAs already establishing association with the second access point, so as to avoid address errors and collision.
Further, the first association identification may be a general AID, and the second association identification may be a special AID, such as "1111111111111111", "1111000011110000", "0000000000000000", and the like.
Further, in the foregoing embodiment, the receiving module 202 is specifically configured to: and receiving the wake-up message frame according to a preset wake-up period, wherein the preset wake-up period is determined by the negotiation between the station and the first access point.
In this embodiment, the first access point may notify the second access point of an awake period of the secondary communication interface of the station while interacting with the second access point to notify the second access point of a received address of an awake message frame for waking up the primary communication interface of the station, so that the first access point can send the awake message frame to the secondary communication interface of the station according to the awake period, thereby ensuring that the time in an idle state can be shortened as much as possible without any change of the station, and after accurately and efficiently receiving the awake message frame sent by the second access point, the first access point can quickly establish association with the second access point, and enter a data communication state in time, thereby reducing power consumption of the device and enabling the device to save power.
That is to say, when the first access point interacts with the second access point, mapping between the wake-up period information bit and the AID may be implemented to ensure that the secondary communication interface of the station can successfully receive the wake-up message frame sent by the second access point.
In the above embodiment, if the wakeup period received by the second access point is smaller than the preset minimum wakeup period for sending the wakeup message frame, the wakeup period is used as the minimum wakeup period for sending the wakeup message frame.
In a specific implementation, the receiving module 202 may be a receiver or an antenna, etc.; the wake-up module 204 may be a central processor or a baseband processor, etc.
Fig. 3 is a flowchart illustrating a communication method for a wireless lan of an access point according to an embodiment of the present invention.
As shown in fig. 3, the communication method for the wlan of the access point according to the embodiment of the present invention specifically includes the following steps:
step 302, a wake-up message frame is generated, where the wake-up message frame is used to wake up a primary communication interface of a station that has established an association with a target access point.
It can be understood that the wake-up message frame includes a unicast wake-up message frame, a multicast wake-up message frame and a broadcast wake-up message frame, that is, the wake-up message frame mainly includes: the method comprises the steps of realizing a unicast awakening message frame of a one-to-one communication mode of a sender to a receiver, realizing a multicast awakening message frame of a one-to-one group communication mode of the sender to the receiver, and realizing a broadcast awakening message frame of all the communication modes of the sender to the receiver.
Further, different receiving manners of the wake-up message frame may be set according to different frame types of the wake-up message frame, so that the device may save more power, and specifically, the scheme for generating the wake-up message frame in step 302 may be specifically implemented as:
when the wake-up message frame is a unicast wake-up message frame, setting a receiving address of the wake-up message frame as a first associated identifier of the station; when the wake-up message frame is a multicast wake-up message frame or a multicast wake-up message frame, setting a receiving address of the wake-up message frame as a second association identifier of the station; wherein the first association identifier and the second association identifier of the station are received from the target access point.
It can be understood that, in order to improve the receiving efficiency of the station for the wake-up message frame, specifically, by interacting with the target access point, receiving the association identifier of the station used as the receiving address of the wake-up message frame and sent by the target access point and corresponding to the frame type of the wake-up message frame, to avoid resetting its receiving address when sending the wake-up message frame to the station and to ensure that the wake-up message frame is successfully delivered to the secondary communication interface of the station, and, in particular, when the wake-up message frame is a unicast wake-up message frame, setting the receiving address of the unicast wake-up message frame as a first association identifier of the station, when the wake-up message frame is a multicast wake-up message frame or a broadcast wake-up message frame, setting the receiving address of the multicast wake-up message frame or the broadcast wake-up message frame as a second association identifier of the station, which is different from the first association identifier, the first association identifier and the second association identifier may be different AIDs of the station, respectively.
And if the AID is consistent with the AID allocated to other STAs which are already associated with the AID, allocating a new AID to other STAs which are already associated with the AID, so as to avoid conflict caused by address errors.
Further, the first association identification may be a general AID, and the second association identification may be a special AID, such as "1111111111111111", "1111000011110000", "0000000000000000", and the like.
Further, in the above embodiment, the communication method of the wireless local area network further includes: and receiving the wake-up period of the secondary communication interface which is determined by the negotiation between the target access point and the station, so as to refer to the wake-up message frame sent to the station.
It can be understood that, while interacting with the target access point to obtain the receiving address of the wake-up message frame for waking up the primary communication interface of the station, the wake-up period of the secondary communication interface of the station can be obtained from the target access point, so that the wake-up message frame can be sent to the secondary communication interface of the station according to the period, and the time that the station is in the random state can be shortened as much as possible without any change of the station, and the station can be enabled to quickly establish association with a new access point after accurately and efficiently receiving the wake-up message frame sent by the new access point, and enter a data communication state in time, thereby reducing the power consumption of the device and enabling the device to save more power.
That is, when interacting with the target access point, mapping between the wakeup period information bit and the AID may be implemented to ensure that the secondary communication interface of the station can successfully receive the wakeup message frame sent by the new access point.
In the above embodiment, if the wakeup period received from the target access point is smaller than the preset minimum wakeup period for sending the wakeup message frame, the wakeup period is taken as the minimum wakeup period for sending the wakeup message frame.
Step 304, sending the wake-up message frame to the secondary communication interface of the station, where the wake-up message frame includes an identifier indicating that the target access point has left the coverage area of the station.
To sum up, in the above embodiment, when the target access point that has already associated with the station leaves the coverage of the station and causes the station to be in the WUR state, in order to avoid the station being in the state of indifference due to the fact that the station cannot establish normal data communication with the target access point, the station may be rediscovered by generating and sending a wake-up message frame to the station to wake up its primary communication interface for data communication, specifically, the wake-up message frame includes an identifier indicating that the target access point has left the coverage of the station, so as to quickly establish association with the station, thereby enabling the station to receive a downlink data frame buffered by a new access point, and also avoiding the state of indifference that the primary communication interface cannot be woken up until the secondary communication interface wakes up, specifically, sending the wake-up message frame to the secondary communication interface of the station, and sending the downlink data frame cached for the main communication interface of the station to the main communication interface of the station after waking up the main communication interface of the station according to the wake-up message frame, so as to realize timely communication with the station in the WUR state, thereby effectively reducing the power consumption of the equipment, leading the equipment to be more power-saving and meeting the requirements of IEEE802.11 ba.
The primary communication interface and the secondary communication interface of the station may be different physical entities, or may be the same set of physical entities, and are only logically separated.
The main body of the communication method shown in fig. 3 may be an access point device in a network formed by an access point and a station, such as a router, a server with a Wi-Fi interface, or a smart phone.
Fig. 4 shows a schematic block diagram of a communication device for a wireless local area network of an access point according to an embodiment of the present invention.
As shown in fig. 4, a communication apparatus 40 for a wireless local area network of an access point according to an embodiment of the present invention includes: a generation module 402 and a sending module 404.
The generating module 402 is configured to generate a wake-up message frame, where the wake-up message frame is used to wake up a primary communication interface of a station that has established an association with a target access point; the sending module 404 is configured to send the wake-up message frame generated by the generating module 402 to the secondary communication interface of the station, where the wake-up message frame includes an identifier indicating that the target access point has left the coverage of the station.
In this embodiment, when the target access point that has already established association with the station leaves the coverage of the station and makes the station in the WUR state, in order to avoid the station in the state of flooding and disappearing due to the station being unable to establish normal data communication with the target access point, the station can be rediscovered by generating and sending a wake-up message frame to the station to wake up its main communication interface for data communication, specifically, the wake-up message frame includes an identifier indicating that the target access point has left the coverage of the station, so as to quickly establish association with the station, thereby enabling the station to receive a new downlink data frame buffered by the access point, and also avoiding the station in the flooding and disappearing state that the main communication interface cannot be woken up until the secondary communication interface wakes up, specifically, sending the wake-up message frame to the secondary communication interface of the station, and sending the downlink data frame cached for the main communication interface of the station to the main communication interface of the station after waking up the main communication interface of the station according to the wake-up message frame, so as to realize timely communication with the station in the WUR state, thereby effectively reducing the power consumption of the equipment, leading the equipment to be more power-saving and meeting the requirements of IEEE802.11ba.
The primary communication interface and the secondary communication interface of the station may be different physical entities, or may be the same set of physical entities, and are only logically separated.
Further, in the above embodiment, the wake-up message frame includes a unicast wake-up message frame, a multicast wake-up message frame, and a broadcast wake-up message frame; and the communication device of the wireless local area network further comprises a setting module 406, wherein the setting module 406 is configured to: when the wake-up message frame is a unicast wake-up message frame, setting a receiving address of the wake-up message frame as a first associated identifier of the station; when the wake-up message frame is a multicast wake-up message frame or a multicast wake-up message frame, setting a receiving address of the wake-up message frame as a second association identifier of the station; wherein the first association identifier and the second association identifier of the station are received from the target access point.
In this embodiment, different receiving manners of the wake-up message frame may be specifically set according to different frame types of the wake-up message frame, so as to save more power for the device, and further, the wake-up message frame mainly includes: the method comprises the steps of realizing a unicast awakening message frame of a one-to-one communication mode of a sender to a receiver, realizing a multicast awakening message frame of a one-to-one group communication mode of the sender to the receiver, and realizing a broadcast awakening message frame of all the communication modes of the sender to the receiver.
In order to improve the receiving efficiency of the station for the wake-up message frame, specifically, by interacting with the target access point, receiving the association identifier of the station used as the receiving address of the wake-up message frame and corresponding to the frame type of the wake-up message frame sent by the target access point, to avoid resetting its receiving address when sending the wake-up message frame to the station and to ensure that the wake-up message frame is successfully delivered to the secondary communication interface of the station, and, in particular, when the wake-up message frame is a unicast wake-up message frame, setting the receiving address of the unicast wake-up message frame as a first association identifier of the station, when the wake-up message frame is a multicast wake-up message frame or a broadcast wake-up message frame, setting the receiving address of the multicast wake-up message frame or the broadcast wake-up message frame as a second association identifier of the station, which is different from the first association identifier, the first association identifier and the second association identifier may be different AIDs of the station, respectively.
And if the AID is consistent with the AID allocated to other STAs which are already associated with the AID, allocating a new AID to other STAs which are already associated with the AID, so as to avoid conflict caused by address errors.
Further, the first association identification may be a general AID, and the second association identification may be a special AID, such as "1111111111111111", "1111000011110000", "0000000000000000", and the like.
Further, in the above embodiment, the communication device 40 of the wireless local area network further includes: a receiving module 408, configured to receive, before the sending module 404 sends the wake-up message frame to the primary communication interface of the station, an awake period of a secondary communication interface that is determined by negotiation between the target access point and the station, so as to refer to sending the wake-up message frame to the station.
In this embodiment, while interacting with the target access point to acquire the receiving address of the wake-up message frame for waking up the primary communication interface of the station, the wake-up period of the secondary communication interface of the station may be acquired from the target access point, so that the wake-up message frame may be sent to the secondary communication interface of the station according to the period, and it is ensured that the time when the station is in the random state may be shortened as much as possible without any change, and the station may quickly establish association with a new access point after accurately and efficiently receiving the wake-up message frame sent by the new access point, and enter a data communication state in time, thereby reducing power consumption of the device and enabling the device to save more power.
That is to say, when interacting with the target access point, mapping between the wake-up period information bit and the AID may be implemented to ensure that the secondary communication interface of the station can successfully receive the wake-up message frame sent by the second access point.
In the above embodiment, if the wakeup period received from the target access point is smaller than the preset minimum wakeup period for sending the wakeup message frame, the wakeup period is taken as the minimum wakeup period for sending the wakeup message frame.
In a specific implementation, the generating module 402 and the setting module 406 may be a central processor or a baseband processor; the sending module 404 may be a transmitter or an antenna, etc., and the receiving module 408 may be a receiver or an antenna, etc.
The following describes a technical solution of the present invention in detail with reference to a specific interaction schematic of a communication system of a wireless local area network according to an embodiment of the present invention shown in fig. 5.
As shown in fig. 5, in the communication system of the wireless local area network according to the embodiment of the present invention, a station 502 has previously established an association with a first access point 504, and negotiates with each other to determine a receiving address of a wake-up message frame sent to the station by the first access point 504 and an awake period of a secondary communication interface of the station 502; further, after the first access point 504 leaves the coverage of the station 502 due to a power failure or the like, since the station 502 has already established association with the first access point 504, it is in the WUR state at this time, that is, its primary communication interface is in a sleep state, and the secondary communication interface is in a communication state to listen and receive the wake-up message frame from the first access point 504, obviously, after the first access point 504 leaves the coverage of the station 502, the station 502 will enter an unintentional state; in order to reduce the power consumption of the device, enable the device to save more power, and meet the requirement of IEEE802.11ba, at this time, through interaction between the first access point 504 and the second access point 506, the second access point 506 may obtain the receiving address of the station 502 and the wakeup period of the secondary communication interface, so that when the station 502 enters an idle state, the station 502 is rediscovered, associated with the station, and a wakeup message frame is sent to the secondary communication interface to wake up the primary communication interface to receive the downlink data frame buffered by the second access point 506.
When the station 502 re-establishes association with the second access point, an IEEE802.11 ai mechanism may be used, so that the station 502 in the WUR state can quickly establish association with the new second access point 506 when the old first access point 504 leaves its coverage area, and the IEEE802.11ba requirement is met.
Further, the receiving address of the wake-up message frame received by the station 502 is the AID of the station 502, specifically, when the wake-up message frame is a unicast wake-up message frame, the receiving address thereof may be a general AID, and when the wake-up message frame is a multicast wake-up message frame or a broadcast wake-up message frame, the receiving address thereof may be a special AID.
There is also provided, in accordance with an embodiment of the present invention, communication apparatus including: a communication device 20 of a wireless local area network as shown in fig. 2; and/or a communication device 40 of a wireless local area network as shown in fig. 4.
The technical scheme of the invention is described in detail above with reference to the accompanying drawings, and through the technical scheme of the invention, a new access point can rediscover a station in a WUR state, so that the station can quickly establish association with the new access point when the access point with which the association is established leaves the coverage range of the station, thereby effectively reducing the power consumption of the device, enabling the device to save more power, and meeting the requirements of IEEE802.11 ba.
In the description of the present specification, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and specific meanings of the above terms in the disclosed embodiments may be understood according to specific situations by those of ordinary skill in the art.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. A communication method of a wireless local area network, which is used for a station, wherein the station has established an association with a first access point, and the communication method of the wireless local area network comprises:
receiving a wake-up message frame sent by a second access point, wherein the wake-up message frame comprises an identifier indicating that the first access point leaves the coverage area of the station;
and awakening a main communication interface of the station according to the awakening message frame so as to establish association with the second access point and receive the downlink data frame cached by the second access point for the station.
2. The communication method of the wireless local area network according to claim 1,
the awakening message frame comprises a unicast awakening message frame, a multicast awakening message frame and a broadcast awakening message frame; and
when the wake-up message frame is a unicast wake-up message frame, receiving the wake-up message frame according to a first association identifier of the station;
when the wake-up message frame is a multicast wake-up message frame or a broadcast wake-up message frame, receiving the wake-up message frame according to a second association identifier of the station, which is different from the first association identifier;
wherein the first association identifier and the second association identifier of the station are informed to the second access point by the first access point.
3. The communication method according to claim 1 or 2, wherein the step of receiving the wake-up message frame sent by the second access point specifically includes:
and receiving the wake-up message frame according to a preset wake-up period, wherein the preset wake-up period is determined by the negotiation between the station and the first access point.
4. A communication method of a wireless local area network, which is used for an access point, wherein the communication method of the wireless local area network comprises:
generating a wake-up message frame for waking up a main communication interface of a station which has established association with a target access point;
and sending the wake-up message frame to a secondary communication interface of the station, wherein the wake-up message frame comprises an identifier indicating that the target access point leaves the coverage area of the station.
5. The communication method of the wireless local area network according to claim 4,
the awakening message frame comprises a unicast awakening message frame, a multicast awakening message frame and a broadcast awakening message frame; and
when the wake-up message frame is a unicast wake-up message frame, setting a receiving address of the wake-up message frame as a first associated identifier of the station;
when the wake-up message frame is a multicast wake-up message frame or a multicast wake-up message frame, setting a receiving address of the wake-up message frame as a second association identifier of the station;
wherein the first association identifier and the second association identifier of the station are received from the target access point.
6. The communication method of the wireless local area network according to claim 4 or 5, further comprising, before sending the wake-up message frame to the primary communication interface of the station:
and receiving the wake-up period of the secondary communication interface which is determined by the negotiation between the target access point and the station, so as to refer to the wake-up message frame sent to the station.
7. A communication apparatus of a wireless local area network for a station, wherein the station has established an association with a first access point, and the communication apparatus of the wireless local area network comprises:
a receiving module, configured to receive a wake-up message frame sent by a second access point, where the wake-up message frame includes an identifier indicating that the first access point has left the coverage area of the station;
and the awakening module is used for awakening the main communication interface of the station according to the awakening message frame received by the receiving module so as to establish association with the second access point and receive the downlink data frame cached by the second access point for the station.
8. The communication device of the wireless local area network according to claim 7,
the awakening message frame comprises a unicast awakening message frame, a multicast awakening message frame and a broadcast awakening message frame; and
the receiving module is specifically configured to:
when the wake-up message frame is a unicast wake-up message frame, receiving the wake-up message frame according to a first association identifier of the station;
when the wake-up message frame is a multicast wake-up message frame or a broadcast wake-up message frame, receiving the wake-up message frame according to a second association identifier of the station, which is different from the first association identifier;
wherein the first association identifier and the second association identifier of the station are informed to the second access point by the first access point.
9. The apparatus according to claim 7 or 8, wherein the receiving module is specifically configured to:
and receiving the wake-up message frame according to a preset wake-up period, wherein the preset wake-up period is determined by the negotiation between the station and the first access point.
10. A communication apparatus of a wireless local area network for an access point, the communication apparatus of the wireless local area network comprising:
a generation module, configured to generate a wake-up message frame, where the wake-up message frame is used to wake up a main communication interface of a station that has established association with a target access point;
a sending module, configured to send the wake-up message frame generated by the generating module to a secondary communication interface of the station, where the wake-up message frame includes an identifier indicating that the target access point has left a coverage area of the station.
11. The communication device of the wireless local area network according to claim 10,
the awakening message frame comprises a unicast awakening message frame, a multicast awakening message frame and a broadcast awakening message frame; and
the communication device of the wireless local area network further comprises a setting module, wherein the setting module is used for:
when the wake-up message frame is a unicast wake-up message frame, setting a receiving address of the wake-up message frame as a first associated identifier of the station;
when the wake-up message frame is a multicast wake-up message frame or a multicast wake-up message frame, setting a receiving address of the wake-up message frame as a second association identifier of the station;
wherein the first association identifier and the second association identifier of the station are received from the target access point.
12. The communication apparatus of the wireless local area network according to claim 10 or 11, further comprising:
a receiving module, configured to receive, before the sending module sends the wakeup message frame to the primary communication interface of the station, a wakeup period of a secondary communication interface that is determined by negotiation between the target access point and the station, so as to refer to sending the wakeup message frame to the station.
13. A communication device, comprising:
communication means of a wireless local area network according to any one of claims 7 to 9; and/or
Communication device of a wireless local area network according to any of claims 10 to 12.
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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109041178B (en) * 2017-06-09 2022-04-19 珠海市魅族科技有限公司 Communication method, communication device and communication equipment of wireless local area network
CN117279121A (en) * 2022-06-15 2023-12-22 华为技术有限公司 Wakeup signal transmission method and communication system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101288329A (en) * 2005-08-15 2008-10-15 高通股份有限公司 Adaptive wake-up period of roaming wireless terminals
CN101971577A (en) * 2007-05-25 2011-02-09 手持产品公司 Wireless mesh point portable data terminal
CN104853391A (en) * 2015-03-17 2015-08-19 杭州华三通信技术有限公司 Terminal wake-up method and access point AP
CN204741572U (en) * 2015-06-25 2015-11-04 上海迪爱斯通信设备有限公司 WIFI surveys identification equipment and WIFI intelligence system
CN105101343A (en) * 2015-08-11 2015-11-25 北京邮电大学 Energy-saving method and device for associating a mobile terminal with a wireless access point

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8977276B2 (en) * 2010-07-15 2015-03-10 Nokia Corporation Method and apparatus for device initiated offloading to unlicensed bands
US9544848B2 (en) * 2012-10-24 2017-01-10 Qualcomm Incorporated Methods and apparatus for communicating short paging messages in a wireless communication network
US9313741B2 (en) * 2012-12-29 2016-04-12 Intel Corporation Methods and arrangements to coordinate communications in a wireless network
US10015741B2 (en) * 2014-01-17 2018-07-03 Apple Inc. System and method for low power signaling in a wireless local area network
EP2999160A1 (en) * 2014-09-16 2016-03-23 Samsung Electronics Co., Ltd. Transmission device and reception device for transmission and reception of wake-up packet, and wake-up system and method
US9826483B2 (en) * 2015-06-22 2017-11-21 Intel Corporation Apparatus, system and method of communicating a wakeup packet
US9736779B2 (en) * 2015-06-26 2017-08-15 Intel Corporation Techniques for mobile platform power management using low-power wake-up signals
CN106550376B (en) * 2015-09-17 2020-06-26 杭州华为企业通信技术有限公司 Terminal awakening method and device
CN107333307B (en) * 2016-04-29 2020-06-16 华为技术有限公司 Method and equipment for switching access points in wireless local area network
CN106604377A (en) * 2016-12-30 2017-04-26 广东欧珀移动通信有限公司 Data communication method and device
CN108810825B (en) * 2017-04-26 2021-12-17 珠海市魅族科技有限公司 Communication method, communication device and communication equipment of wireless local area network

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101288329A (en) * 2005-08-15 2008-10-15 高通股份有限公司 Adaptive wake-up period of roaming wireless terminals
CN101971577A (en) * 2007-05-25 2011-02-09 手持产品公司 Wireless mesh point portable data terminal
CN104853391A (en) * 2015-03-17 2015-08-19 杭州华三通信技术有限公司 Terminal wake-up method and access point AP
CN204741572U (en) * 2015-06-25 2015-11-04 上海迪爱斯通信设备有限公司 WIFI surveys identification equipment and WIFI intelligence system
CN105101343A (en) * 2015-08-11 2015-11-25 北京邮电大学 Energy-saving method and device for associating a mobile terminal with a wireless access point

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Radio-On-Demand Sensor and Actuator Networks (ROD-SAN): System Design and Field Trial;Hiroyuki Yomo;《IEEE》;20151210;全文 *
一种极低功耗无线唤醒收发机设计;张雪凡等;《上海大学学报(自然科学版)》;20071215(第06期);全文 *
面向物联网的IEEE 802.11ah低功耗技术改进;傅新星等;《陕西师范大学学报(自然科学版)》;20170310(第02期);全文 *

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