CN107969028B - Communication method, communication device, access point and station of wireless local area network - Google Patents

Communication method, communication device, access point and station of wireless local area network Download PDF

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Publication number
CN107969028B
CN107969028B CN201610911158.3A CN201610911158A CN107969028B CN 107969028 B CN107969028 B CN 107969028B CN 201610911158 A CN201610911158 A CN 201610911158A CN 107969028 B CN107969028 B CN 107969028B
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frame
resource allocation
allocation message
station
indication information
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CN107969028A (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
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • 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
    • H04W52/0219—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave where the power saving management affects multiple terminals
    • 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
    • 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

Abstract

The invention provides a communication method, a communication device, an access point and a station of a wireless local area network, wherein the communication method of the wireless local area network comprises the following steps: generating a unicast wakeup frame, wherein the unicast wakeup frame comprises first indication information, the first indication information is used for indicating a station to receive a resource allocation message frame after receiving the unicast wakeup frame, the unicast wakeup frame is used for waking up the station in a dormant state to enter a wakeup state to receive a data frame, and the resource allocation message frame is used for allocating transmission resources to the station in the wakeup state; and respectively sending the unicast wake-up frame to each device in the dormant state. The technical scheme of the invention ensures that the WUR can well meet the communication requirement of 802.11ax, and improves the communication efficiency on the premise of effectively reducing the power consumption of equipment.

Description

Communication method, communication device, access point and station 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 a wireless local area network, an access point, and a station.
Background
In 2016, 7 months, 802.11 established a research group wur (wake Up receiver) of a next generation Wi-Fi (Wireless Fidelity) technology, which is mainly applied to the aspect of internet of things, and aims to save the power consumption of equipment as much as possible and enable the equipment to receive some control signaling frames and data frames in real time.
In a specific discussion, a wake up frame is proposed as a control signaling frame, and the WUR function needs to be 802.11ax compatible. Considering that OFDMA (Orthogonal Frequency Division Multiple Access) technology is used in 802.11ax and a new resource allocation message frame (i.e. Trigger frame Trigger) is used to allocate transmission resources to each station, in order to make WUR better compatible with 802.11ax, there is a manuscript that proposes a wake-up frame wake-up process in a multi-user situation, as shown in fig. 1 specifically: an Access Point (AP) sends an awake frame to STAs (Stations) in a sleep state, and then sends a trigger frame to the STAs to allocate transmission resources, and then the STAs send a polling frame to the AP to receive a buffered data frame sent by the AP.
However, in the existing discussion, no specific specification is made on the format of the wake up frame, which results in that the WUR cannot well meet the requirement of 802.11ax, and therefore, in order to ensure that the WUR can better meet the requirement of 802.11ax, the definition of the format of the wake up frame is needed.
Disclosure of Invention
Based on at least one of the technical problems, the invention provides a new communication scheme of the wireless local area network, so that the WUR can well meet the communication requirement of 802.11ax, and the communication efficiency is improved on the premise of effectively reducing the power consumption of equipment.
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, including: generating a unicast wakeup frame, wherein the unicast wakeup frame comprises first indication information, the first indication information is used for indicating a station to receive a resource allocation message frame after receiving the unicast wakeup frame, the unicast wakeup frame is used for waking up the station in a dormant state to enter a wakeup state to receive a data frame, and the resource allocation message frame is used for allocating transmission resources to the station in the wakeup state; and respectively sending the unicast wake-up frame to each device in the dormant state.
In the technical scheme, the unicast wakeup frame includes the first indication information to indicate the station to receive the resource allocation message frame after receiving the unicast wakeup frame, so that the station can detect and receive the resource allocation message frame according to the indication of the first indication information after receiving the unicast wakeup frame, and further receive the cache data frame according to the transmission resource allocated by the resource allocation message frame. Therefore, the WUR can well meet the communication requirement of 802.11ax by the technical scheme of the invention, and the communication efficiency is improved on the premise of effectively reducing the power consumption of equipment.
The unicast wakeup frame and the resource allocation message frame may be sent in different channels, and the sending power of the unicast wakeup frame is obviously less than the sending power of the resource allocation message frame. The wake-up frame is a wake up frame; the resource allocation message frame is a trigger frame, and the receiving address of the resource allocation message frame is a multicast address, that is, the trigger frame is used for allocating transmission resources to a plurality of stations, and the plurality of stations are stations for receiving unicast wakeup frames. And the station in the dormant state wakes up after receiving the wake-up frame, further receives the resource allocation message frame, sends a polling frame according to the transmission resources allocated in the resource allocation message frame, and the access point sends a cache data frame to the station after receiving the polling frame.
In the above technical solution, preferably, the unicast wakeup frame further includes second indication information, where the second indication information is used to indicate a starting time for sending the resource allocation message frame.
In the technical scheme, the unicast wakeup frame comprises the second indication information for indicating the starting time of sending the resource allocation message frame, so that a plurality of stations can receive the resource allocation message frame sent by the access point at the same time, the stations are favorable for waking up to receive the resource allocation message frame at a determined time point, and the power consumption is further reduced.
In any of the above technical solutions, preferably, the unicast wakeup frame further includes a receiving address of the resource allocation message frame, and the receiving address of the resource allocation message frame is a multicast address.
In the technical scheme, the unicast wakeup frame comprises the receiving address of the resource allocation message frame, so that the station can receive the resource allocation message frame according to the receiving address.
Preferably, the receiving address of the resource allocation message frame includes a Data Field portion (i.e., Data Field) in the unicast wakeup frame.
According to the second aspect of the present invention, there is also provided a communication method for a wireless local area network, including: receiving a unicast wakeup frame, wherein the unicast wakeup frame comprises first indication information, the first indication information is used for indicating a station to receive a resource allocation message frame after the unicast wakeup frame is received, the unicast wakeup frame is used for waking up the station in a dormant state to enter a wakeup state to receive a data frame, and the resource allocation message frame is used for allocating transmission resources to the station in the wakeup state; entering an awake state after receiving the unicast wakeup frame, and receiving the resource allocation message frame sent by an access point; communicating with the access point based on the transmission resources allocated by the resource allocation message frame.
In the technical scheme, the unicast wakeup frame includes the first indication information to indicate the station to receive the resource allocation message frame after receiving the unicast wakeup frame, so that the station can detect and receive the resource allocation message frame according to the indication of the first indication information after receiving the unicast wakeup frame, and further receive the cache data frame according to the transmission resource allocated by the resource allocation message frame. Therefore, the WUR can well meet the communication requirement of 802.11ax by the technical scheme of the invention, and the communication efficiency is improved on the premise of effectively reducing the power consumption of equipment.
Wherein the receiver of the unicast wakeup frame and the receiver of the resource allocation message frame may be two different physical entities.
In the foregoing technical solution, preferably, the step of communicating with the access point based on the transmission resource allocated by the resource allocation message frame specifically includes: transmitting a polling frame to the access point based on the transmission resources allocated by the resource allocation message frame; and receiving a buffered data frame sent by the access point after receiving the polling frame.
In any of the above technical solutions, preferably, when the unicast wakeup frame further includes second indication information, and the second indication information is used to indicate a start time of sending the resource allocation message frame, the communication method further includes: and receiving the resource allocation message frame sent by the access point at the starting time indicated by the second indication information.
According to the third aspect of the present invention, there is further provided a communication apparatus for a wireless local area network, including: a generating unit, configured to generate a unicast wakeup frame, where the unicast wakeup frame includes first indication information, where the first indication information is used to indicate, to a station, that a resource allocation message frame is received after the unicast wakeup frame is received, the unicast wakeup frame is used to wake up the station in a sleep state to enter an awake state to receive a data frame, and the resource allocation message frame is used to allocate transmission resources to the station in the awake state; a sending unit, configured to send the unicast wakeup frame to each device in a dormant state.
In the technical scheme, the unicast wakeup frame includes the first indication information to indicate the station to receive the resource allocation message frame after receiving the unicast wakeup frame, so that the station can detect and receive the resource allocation message frame according to the indication of the first indication information after receiving the unicast wakeup frame, and further receive the cache data frame according to the transmission resource allocated by the resource allocation message frame. Therefore, the WUR can well meet the communication requirement of 802.11ax by the technical scheme of the invention, and the communication efficiency is improved on the premise of effectively reducing the power consumption of equipment.
The unicast wakeup frame and the resource allocation message frame may be sent in different channels, and the sending power of the unicast wakeup frame is obviously less than the sending power of the resource allocation message frame. The wake-up frame is a wake up frame; the resource allocation message frame is a trigger frame, and the receiving address of the resource allocation message frame is a multicast address, that is, the trigger frame is used for allocating transmission resources to a plurality of stations, and the plurality of stations are stations for receiving unicast wakeup frames. And the station in the dormant state wakes up after receiving the wake-up frame, further receives the resource allocation message frame, sends a polling frame according to the transmission resources allocated in the resource allocation message frame, and the access point sends a cache data frame to the station after receiving the polling frame.
In the above technical solution, preferably, the unicast wakeup frame further includes second indication information, where the second indication information is used to indicate a starting time for sending the resource allocation message frame.
In the technical scheme, the unicast wakeup frame comprises the second indication information for indicating the starting time of sending the resource allocation message frame, so that a plurality of stations can receive the resource allocation message frame sent by the access point at the same time, the stations are favorable for waking up to receive the resource allocation message frame at a determined time point, and the power consumption is further reduced.
In any of the above technical solutions, preferably, the unicast wakeup frame further includes a receiving address of the resource allocation message frame, and the receiving address of the resource allocation message frame is a multicast address.
In the technical scheme, the unicast wakeup frame comprises the receiving address of the resource allocation message frame, so that the station can receive the resource allocation message frame according to the receiving address.
Preferably, the receiving address of the resource allocation message frame includes a data field portion in the unicast wake-up frame.
According to the fourth aspect of the present invention, there is also provided a communication apparatus for a wireless local area network, including: a first receiving unit, configured to receive a unicast wakeup frame, where the unicast wakeup frame includes first indication information, where the first indication information is used to indicate, to a station, to receive a resource allocation message frame after the unicast wakeup frame is received, the unicast wakeup frame is used to wake up the station in a dormant state to enter an awake state to receive a data frame, and the resource allocation message frame is used to allocate a transmission resource to the station in the awake state; a processing unit, configured to enter an awake state after the first receiving unit receives the unicast wakeup frame, and receive the resource allocation message frame sent by the access point through the first receiving unit; a communication unit, configured to communicate with the access point based on the transmission resource allocated by the resource allocation message frame.
In the technical scheme, the unicast wakeup frame includes the first indication information to indicate the station to receive the resource allocation message frame after receiving the unicast wakeup frame, so that the station can detect and receive the resource allocation message frame according to the indication of the first indication information after receiving the unicast wakeup frame, and further receive the cache data frame according to the transmission resource allocated by the resource allocation message frame. Therefore, the WUR can well meet the communication requirement of 802.11ax by the technical scheme of the invention, and the communication efficiency is improved on the premise of effectively reducing the power consumption of equipment.
Wherein the receiver of the unicast wakeup frame and the receiver of the resource allocation message frame may be two different physical entities.
In the foregoing technical solution, preferably, the communication unit specifically includes: a transmitting unit, configured to transmit a polling frame to the access point based on the transmission resource allocated by the resource allocation message frame; and the second receiving unit is used for receiving the buffered data frame sent by the access point after receiving the polling frame.
In any of the foregoing technical solutions, preferably, when the unicast wakeup frame further includes second indication information, and the second indication information is used to indicate a start time for sending the resource allocation message frame, the first receiving unit is specifically configured to: and receiving the resource allocation message frame sent by the access point at the starting time indicated by the second indication information.
According to the fifth aspect of the present invention, there is also provided an access point, comprising: the communication device of the wireless local area network according to the third aspect.
According to a sixth aspect of the present invention, there is also provided a station, comprising: a communication apparatus of a wireless local area network as described in the fourth aspect above.
Through the technical scheme, the WUR can well meet the communication requirement of 802.11ax, and the communication efficiency is improved on the premise of effectively reducing the power consumption of equipment.
Drawings
Fig. 1 shows a schematic diagram of an interaction process between an access point and a station in a combined use scenario of WUR and 802.11 ax;
fig. 2 is a flowchart illustrating a communication method of a wireless local area network according to a first embodiment of the present invention;
fig. 3 shows a schematic block diagram of a communication device of a wireless local area network according to a first embodiment of the present invention;
fig. 4 shows a schematic block diagram of an access point according to an embodiment of the invention;
fig. 5 is a flowchart illustrating a communication method of a wireless lan according to a second embodiment of the present invention;
fig. 6 shows a schematic block diagram of a communication device of a wireless local area network according to a second embodiment of the present invention;
FIG. 7 shows a schematic block diagram of a station according to an embodiment of the invention;
fig. 8 is a flowchart illustrating a communication method of a wireless local area network according to a third 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. 2 is a flowchart illustrating a communication method of a wireless local area network according to a first embodiment of the present invention.
As shown in fig. 2, a communication method of a wireless local area network according to a first embodiment of the present invention includes:
step S20, a unicast wakeup frame is generated, where the unicast wakeup frame includes first indication information, the first indication information is used to indicate to a station to receive a resource allocation message frame after receiving the unicast wakeup frame, the unicast wakeup frame is used to wake up the station in a sleep state to enter an awake state to receive a data frame, and the resource allocation message frame is used to allocate transmission resources to the station in the awake state.
Wherein, the wake-up frame is a wake up frame; the resource allocation message frame is a trigger frame, and the receiving address of the resource allocation message frame is a multicast address, that is, the trigger frame is used for allocating transmission resources to a plurality of stations, and the plurality of stations are stations for receiving unicast wakeup frames.
Step S22, sending the unicast wake-up frame to each device in the sleep state.
The unicast wakeup frame and the resource allocation message frame can be sent in different channels, and the sending power of the unicast wakeup frame is obviously less than the sending power of the resource allocation message frame. And the station in the dormant state wakes up after receiving the wake-up frame, further receives the resource allocation message frame, sends a polling frame according to the transmission resources allocated in the resource allocation message frame, and the access point sends a cache data frame to the station after receiving the polling frame.
Further, the unicast wakeup frame further includes second indication information, where the second indication information is used to indicate a start time of sending the resource allocation message frame.
In the technical scheme, the unicast wakeup frame comprises the second indication information for indicating the starting time of sending the resource allocation message frame, so that a plurality of stations can receive the resource allocation message frame sent by the access point at the same time, the stations are favorable for waking up to receive the resource allocation message frame at a determined time point, and the power consumption is further reduced.
Further, the unicast wakeup frame further includes a receiving address of the resource allocation message frame, and the receiving address of the resource allocation message frame is a multicast address.
In the technical scheme, the unicast wakeup frame comprises the receiving address of the resource allocation message frame, so that the station can receive the resource allocation message frame according to the receiving address.
Preferably, the receiving address of the resource allocation message frame includes a Data Field portion (Data Field) in the unicast wakeup frame.
In the technical scheme shown in fig. 2, the unicast wakeup frame includes the first indication information to indicate the station to receive the resource allocation message frame after receiving the unicast wakeup frame, so that the station can detect and receive the resource allocation message frame according to the indication of the first indication information after receiving the unicast wakeup frame, and further receive the buffered data frame according to the transmission resource allocated by the resource allocation message frame. Therefore, the WUR can well meet the communication requirement of 802.11ax by the technical scheme of the invention, and the communication efficiency is improved on the premise of effectively reducing the power consumption of equipment.
Among them, the execution subject of the communication method shown in fig. 2 may be a router or the like.
Fig. 3 shows a schematic block diagram of a communication device of a wireless local area network according to a first embodiment of the present invention.
As shown in fig. 3, a communication apparatus 300 of a wireless local area network according to a first embodiment of the present invention includes: a generating unit 302 and a transmitting unit 304.
The generating unit 302 is configured to generate a unicast wakeup frame, where the unicast wakeup frame includes first indication information, the first indication information is used to indicate, to a station, to receive a resource allocation message frame after the unicast wakeup frame is received, the unicast wakeup frame is used to wake up the station in a sleep state to enter an awake state to receive a data frame, and the resource allocation message frame is used to allocate a transmission resource to the station in the awake state; the sending unit 304 is configured to send the unicast wakeup frame to each device in the sleep state.
In a specific implementation, the generating unit 302 may be a signal processor, a central processing unit, a baseband processor, or the like; the transmitting unit 304 may be a transmitter or an antenna, etc.
In the technical scheme, the unicast wakeup frame includes the first indication information to indicate the station to receive the resource allocation message frame after receiving the unicast wakeup frame, so that the station can detect and receive the resource allocation message frame according to the indication of the first indication information after receiving the unicast wakeup frame, and further receive the cache data frame according to the transmission resource allocated by the resource allocation message frame. Therefore, the WUR can well meet the communication requirement of 802.11ax by the technical scheme of the invention, and the communication efficiency is improved on the premise of effectively reducing the power consumption of equipment.
The unicast wakeup frame and the resource allocation message frame may be sent in different channels, and the sending power of the unicast wakeup frame is obviously less than the sending power of the resource allocation message frame. The wake-up frame is a wake up frame; the resource allocation message frame is a trigger frame, and the receiving address of the resource allocation message frame is a multicast address, that is, the trigger frame is used for allocating transmission resources to a plurality of stations, and the plurality of stations are stations for receiving unicast wakeup frames. And the station in the dormant state wakes up after receiving the wake-up frame, further receives the resource allocation message frame, sends a polling frame according to the transmission resources allocated in the resource allocation message frame, and the access point sends a cache data frame to the station after receiving the polling frame.
In the above technical solution, preferably, the unicast wakeup frame further includes second indication information, where the second indication information is used to indicate a starting time for sending the resource allocation message frame.
In the technical scheme, the unicast wakeup frame comprises the second indication information for indicating the starting time of sending the resource allocation message frame, so that a plurality of stations can receive the resource allocation message frame sent by the access point at the same time, the stations are favorable for waking up to receive the resource allocation message frame at a determined time point, and the power consumption is further reduced.
In any of the above technical solutions, preferably, the unicast wakeup frame further includes a receiving address of the resource allocation message frame, and the receiving address of the resource allocation message frame is a multicast address.
In the technical scheme, the unicast wakeup frame comprises the receiving address of the resource allocation message frame, so that the station can receive the resource allocation message frame according to the receiving address.
Preferably, the receiving address of the resource allocation message frame includes a Data Field portion (Data Field) in the unicast wakeup frame.
Fig. 4 shows a schematic block diagram of an access point according to an embodiment of the invention.
As shown in fig. 4, an access point 400 according to an embodiment of the present invention includes: such as the communication device 300 of the wireless local area network shown in fig. 3.
Fig. 5 is a flowchart illustrating a communication method of a wireless lan according to a second embodiment of the present invention.
As shown in fig. 5, a communication method of a wireless local area network according to a second embodiment of the present invention includes:
step S50, receiving a unicast wakeup frame, where the unicast wakeup frame includes first indication information, where the first indication information is used to indicate to a station to receive a resource allocation message frame after receiving the unicast wakeup frame, the unicast wakeup frame is used to wake up the station in a sleep state to enter an awake state to receive a data frame, and the resource allocation message frame is used to allocate transmission resources to the station in the awake state.
Step S52, entering an awake state after receiving the unicast wakeup frame, and receiving the resource allocation message frame sent by the access point.
Step S54, communicating with the access point based on the transmission resource allocated by the resource allocation message frame.
In the technical scheme, the unicast wakeup frame includes the first indication information to indicate the station to receive the resource allocation message frame after receiving the unicast wakeup frame, so that the station can detect and receive the resource allocation message frame according to the indication of the first indication information after receiving the unicast wakeup frame, and further receive the cache data frame according to the transmission resource allocated by the resource allocation message frame. Therefore, the WUR can well meet the communication requirement of 802.11ax by the technical scheme of the invention, and the communication efficiency is improved on the premise of effectively reducing the power consumption of equipment.
Wherein the receiver of the unicast wakeup frame and the receiver of the resource allocation message frame may be two different physical entities.
Further, the step S54 specifically includes: transmitting a polling frame to the access point based on the transmission resources allocated by the resource allocation message frame; and receiving a buffered data frame sent by the access point after receiving the polling frame.
In any of the above technical solutions, preferably, when the unicast wakeup frame further includes second indication information, and the second indication information is used to indicate a start time of sending the resource allocation message frame, the communication method further includes: and receiving the resource allocation message frame sent by the access point at the starting time indicated by the second indication information.
The main body of the communication method shown in fig. 5 may be a mobile phone or a PDA (Personal Digital Assistant), or the like.
Fig. 6 shows a schematic block diagram of a communication device of a wireless local area network according to a second embodiment of the present invention.
As shown in fig. 6, a communication apparatus 600 of a wireless lan according to a second embodiment of the present invention includes: a first receiving unit 602, a processing unit 604 and a communication unit 606.
The first receiving unit 602 is configured to receive a unicast wakeup frame, where the unicast wakeup frame includes first indication information, where the first indication information is used to indicate, to a station, to receive a resource allocation message frame after the unicast wakeup frame is received, the unicast wakeup frame is used to wake up the station in a dormant state to enter an awake state to receive a data frame, and the resource allocation message frame is used to allocate transmission resources to the station in the awake state; the processing unit 604 is configured to enter an awake state after the first receiving unit 602 receives the unicast wakeup frame, and receive the resource allocation message frame sent by the access point through the first receiving unit 602; the communication unit 606 is configured to communicate with the access point based on the transmission resource allocated by the resource allocation message frame.
In a specific implementation, the first receiving unit 602 may be a receiver or an antenna, etc.; the processing unit 604 may be a central processing unit or a baseband processor, etc.
In the technical scheme, the unicast wakeup frame includes the first indication information to indicate the station to receive the resource allocation message frame after receiving the unicast wakeup frame, so that the station can detect and receive the resource allocation message frame according to the indication of the first indication information after receiving the unicast wakeup frame, and further receive the cache data frame according to the transmission resource allocated by the resource allocation message frame. Therefore, the WUR can well meet the communication requirement of 802.11ax by the technical scheme of the invention, and the communication efficiency is improved on the premise of effectively reducing the power consumption of equipment.
Wherein the receiver of the unicast wakeup frame and the receiver of the resource allocation message frame may be two different physical entities.
Further, the communication unit 606 specifically includes: a transmission unit 6062 and a second reception unit 6064.
Wherein the transmitting unit 6062 is configured to transmit a polling frame to the access point based on the transmission resource allocated by the resource allocation message frame; a second receiving unit 6064 is configured to receive the buffered data frame sent by the access point after receiving the polling frame.
In a specific implementation, the transmitting unit 6062 may be a transmitter, an antenna, or the like; the second receiving unit 6064 may be a receiver or an antenna, etc.
Further, when the unicast wakeup frame further includes second indication information, and the second indication information is used to indicate a start time of sending the resource allocation message frame, the first receiving unit 602 is specifically configured to: and receiving the resource allocation message frame sent by the access point at the starting time indicated by the second indication information.
Fig. 7 shows a schematic block diagram of a station according to an embodiment of the invention.
As shown in fig. 7, a station 700 according to an embodiment of the present invention includes: such as communication device 600 of a wireless local area network shown in fig. 6.
In summary, in the technical solution of the present invention, the format of the wake up frame is mainly defined, so that the wake up frame can be better compatible with 802.11 ax.
The wake up frame sent by the access point to the station is a unicast message frame, and the wake up frame in the unicast form needs to include:
1. the identification bit of the resource allocation message frame is used for indicating that the station needs to receive the resource allocation message frame sent by the AP after receiving the wake up frame, so that resources can be better allocated to the station to receive the data frame cached by the AP;
2. the starting time of the resource allocation message frame is convenient for 802.11 main transceivers of all stations to receive the resource allocation message frame sent by the AP at the same time, and then the stations can wake up to receive the resource allocation message frame at a determined time point, which is more beneficial to reducing power consumption;
3. the receiving addresses of the resource allocation message frame are multicast addresses for waking up all stations by the AP, and the multicast addresses may be included in the data field part of the wake up frame.
In summary, the format of wake up frame is shown in table 1:
Figure BDA0001133682730000121
TABLE 1
Here, the "indication information of the trigger frame" shown in table 1 may occupy 1 octet, the "start time of the trigger frame" may occupy 2 octets, and the "reception MAC address of the trigger frame" may occupy 2 octets.
Specifically, the interaction process between the access point and the station is as shown in fig. 8, and includes:
in step 801, the access point 1 generates a wake up frame. Wherein the wake up frame contains the contents shown in table 1 above.
Step 802, the access point 1 sends a wake up frame.
In step 803, station 2 receives the wake up frame.
In step 804, the station 2 changes from the sleep state to the awake state.
In step 805, the access point 1 generates a trigger frame. The trigger frame is a resource allocation message frame, and is used for allocating transmission resources to a plurality of stations.
In step 806, the access point 1 sends a trigger frame. The wake-up frame and the trigger frame may be transmitted in different channels, and the transmission power of the wake-up frame is significantly less than the transmission power of the trigger frame.
In step 807, station 2 receives the trigger frame. Wherein the receiver of the wake up frame and the receiver of the trigger frame may be two different physical entities.
Step 808, the station 2 acquires the transmission resource allocated in the trigger frame.
In step 809, the station 2 sends a polling frame to the access point 1 based on the transmission resources allocated in the trigger frame.
In step 810, the access point 1 receives a polling frame.
In step 811, the access point 1 transmits the buffered data frame.
At step 812, station 2 receives the buffered data frame.
In step 813, station 2 sends an acknowledgement frame to access point 1.
The technical scheme of the invention is described in detail in the above with reference to the accompanying drawings, and the invention provides a new communication scheme of a wireless local area network, so that the WUR can well meet the communication requirement of 802.11ax, and the communication efficiency is improved on the premise of effectively reducing the power consumption of equipment.
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 (14)

1. A communication method for a wireless local area network, comprising:
generating a unicast wakeup frame, wherein the unicast wakeup frame comprises first indication information, the first indication information is used for indicating a station to receive a resource allocation message frame after receiving the unicast wakeup frame, the unicast wakeup frame is used for waking up the station in a dormant state to enter a wakeup state to receive a data frame, and the resource allocation message frame is used for allocating transmission resources to the station in the wakeup state;
respectively sending the unicast wakeup frame to each device in a dormant state;
the unicast wakeup frame further includes second indication information, where the second indication information is used to indicate a starting time for sending the resource allocation message frame.
2. The communication method of claim 1, wherein the unicast wakeup frame further includes a receiving address of the resource allocation message frame, and the receiving address of the resource allocation message frame is a multicast address.
3. The method of claim 2, wherein the receiving address of the resource allocation message frame comprises a data field portion in the unicast wake-up frame.
4. A communication method for a wireless local area network, comprising:
receiving a unicast wakeup frame, wherein the unicast wakeup frame comprises first indication information, the first indication information is used for indicating a station to receive a resource allocation message frame after the unicast wakeup frame is received, the unicast wakeup frame is used for waking up the station in a dormant state to enter a wakeup state to receive a data frame, and the resource allocation message frame is used for allocating transmission resources to the station in the wakeup state;
entering an awake state after receiving the unicast wakeup frame, and receiving the resource allocation message frame sent by an access point;
communicating with the access point based on the transmission resources allocated by the resource allocation message frame;
the unicast wakeup frame further includes second indication information, and the second indication information is used for indicating the starting time of sending the resource allocation message frame.
5. The method according to claim 4, wherein the step of communicating with the access point based on the transmission resource allocated by the resource allocation message frame specifically comprises:
transmitting a polling frame to the access point based on the transmission resources allocated by the resource allocation message frame;
and receiving a buffered data frame sent by the access point after receiving the polling frame.
6. The communication method of the wireless local area network according to claim 4 or 5, wherein the communication method further comprises:
and receiving the resource allocation message frame sent by the access point at the starting time indicated by the second indication information.
7. A communication apparatus of a wireless local area network, comprising:
a generating unit, configured to generate a unicast wakeup frame, where the unicast wakeup frame includes first indication information, where the first indication information is used to indicate, to a station, that a resource allocation message frame is received after the unicast wakeup frame is received, the unicast wakeup frame is used to wake up the station in a sleep state to enter an awake state to receive a data frame, and the resource allocation message frame is used to allocate transmission resources to the station in the awake state;
a sending unit, configured to send the unicast wakeup frame to each device in a dormant state;
the unicast wakeup frame further includes second indication information, where the second indication information is used to indicate a starting time for sending the resource allocation message frame.
8. The apparatus of claim 7, wherein the unicast wakeup frame further includes a receiving address of the resource allocation message frame, and the receiving address of the resource allocation message frame is a multicast address.
9. The apparatus of claim 8, wherein the receiving address of the resource allocation message frame comprises a data field portion in the unicast wake-up frame.
10. A communication apparatus of a wireless local area network, comprising:
a first receiving unit, configured to receive a unicast wakeup frame, where the unicast wakeup frame includes first indication information, where the first indication information is used to indicate, to a station, to receive a resource allocation message frame after the unicast wakeup frame is received, the unicast wakeup frame is used to wake up the station in a dormant state to enter an awake state to receive a data frame, and the resource allocation message frame is used to allocate a transmission resource to the station in the awake state;
a processing unit, configured to enter an awake state after the first receiving unit receives the unicast wakeup frame, and receive the resource allocation message frame sent by the access point through the first receiving unit;
a communication unit, configured to communicate with the access point based on the transmission resource allocated by the resource allocation message frame;
the unicast wakeup frame further includes second indication information, and the second indication information is used for indicating the starting time of sending the resource allocation message frame.
11. The communication apparatus of wireless local area network according to claim 10, wherein the communication unit specifically includes:
a transmitting unit, configured to transmit a polling frame to the access point based on the transmission resource allocated by the resource allocation message frame;
and the second receiving unit is used for receiving the buffered data frame sent by the access point after receiving the polling frame.
12. The apparatus according to claim 10 or 11, wherein the first receiving unit is specifically configured to: and receiving the resource allocation message frame sent by the access point at the starting time indicated by the second indication information.
13. An access point, comprising: communication device of a wireless local area network according to any of claims 7 to 9.
14. A station, comprising: communication device of a wireless local area network according to any of claims 10 to 12.
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