CN108811051B - 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 PDFInfo
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- CN108811051B CN108811051B CN201710301715.4A CN201710301715A CN108811051B CN 108811051 B CN108811051 B CN 108811051B CN 201710301715 A CN201710301715 A CN 201710301715A CN 108811051 B CN108811051 B CN 108811051B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
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- 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]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
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 comprises the following steps: generating a wake-up frame, wherein the wake-up frame is used for waking up a main communication interface of a station in a dormant state, and the wake-up frame comprises preset EDCA parameters, and the preset EDCA parameters comprise preset clock parameters; and sending the wake-up frame to a secondary communication interface of the site, wherein the preset clock parameter is used for updating a clock parameter adopted before a primary communication interface of the site is in a dormant state. Through the technical scheme of the invention, the clock parameter of the station equipment can be updated, so that the station equipment can be accessed to a network with higher priority after receiving the wakeup frame, the requirement of IEEE802.11ba is met, and the equipment is more power-saving.
Description
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, the IEEE (Institute of Electrical and Electronics Engineers )802.11 established the wur (wake Up receiver) research group of the next generation Wi-Fi (Wireless Fidelity) technology, 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 (wakeup frame).
However, if after receiving a wake-up frame sent by an Access Point (AP, Access Point), a station device (states) responds to the wake-up frame with EDCA (Enhanced Distributed Channel Access) parameters that are the same as those of the existing Stations, that is, the level of the response frame Access Channel of the station device to the wake-up frame is the same as that of the existing frame Access Channel, it is obvious that the station device does not save power and does not meet the requirement of ieee802.11ba, and therefore how to update the clock parameters of the main communication interface Access Channel of the station device after receiving the wake-up frame meets the requirement of ieee802.11ba, so that the device saves more power, and becomes a technical problem to be solved urgently.
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 replaces the reserved clock parameters with the clock parameters carried by the wakeup frame after the station device receives the wakeup frame, so as to update the clock parameters of the station device, so that the station device can access the network with a higher priority after receiving the wakeup frame, thereby meeting the requirements of ieee802.11ba and enabling the device to be more power-saving.
In view of this, according to a first aspect of the present invention, a communication method of a wireless local area network is provided, which is used on an access point side, and the communication method of the wireless local area network includes: generating a wake-up frame, wherein the wake-up frame is used for waking up a main communication interface of a station in a dormant state, and the wake-up frame comprises preset EDCA parameters, and the preset EDCA parameters comprise preset clock parameters; and sending the wake-up frame to a secondary communication interface of the site, wherein the preset clock parameter is used for updating a clock parameter adopted before a primary communication interface of the site is in a dormant state.
In the technical scheme, before the main communication interface of the station enters a sleep state and before the secondary communication interface of the station is in a working state to receive a wake-up frame sent by an access point, data communication is performed between the station and the access point, and the adopted clock parameters may be an MU (multi-Factor) EDCA parameter, a basic EDCA parameter and the like thereof, after the main communication interface of the station completes the data communication entering the sleep state, the EDCA parameter adopted by the station during the data communication is reserved, and the clock parameter of a timer thereof is reserved, so that the station can access a channel with higher priority after receiving the wake-up frame, a new preset clock parameter can be preset in the wake-up frame sent to the station, so that after the main communication interface of the station is awakened, the originally reserved clock parameter is replaced by the new clock parameter to access the channel according to the new clock parameter, therefore, the requirements of IEEE802.11ba are met, and the equipment is more power-saving.
In the above technical solution, preferably, the wake-up frame is a unicast message frame or a multicast message frame; and the preset EDCA parameter further comprises access channel priority information, and the access channel priority information is used for indicating that a main communication interface of the station accesses a channel with the highest priority.
In the technical scheme, the wake-up frame can be sent to the station in a one-to-one unicast communication mode and can also be sent to the station in a one-to-many multicast communication mode, so that the station can receive the wake-up frame in multiple modes to wake up the main communication interface of the station; further, in order to enable the main communication interface of the station to access the channel with a higher priority, the preset ECDA parameter in the wake-up frame may be configured to include priority information of the access channel, so that the main communication interface of the station performs data communication with the access point in the access channel with the highest priority according to the priority information of the access channel, and preferentially receives the downlink data cached by the access point.
Specifically, the access channel priority information includes an Arbitration Inter Frame Spacing Number (AIFSN), and the Arbitration Frame Spacing Number may be set to 1 in order to enable the primary communication interface of the station to access the channel with the highest priority level.
According to the second aspect of the present invention, there is also provided a communication apparatus of a wireless local area network, configured to be used on an access point side, the communication apparatus of the wireless local area network including: the device comprises a generation module, a receiving module and a sending module, wherein the generation module is used for generating a wake-up frame, the wake-up frame is used for waking up a main communication interface of a station in a dormant state, and the wake-up frame comprises preset EDCA parameters, and the preset EDCA parameters comprise preset clock parameters; and a sending module, configured to send the wake-up frame generated by the generating module to a secondary communication interface of the station, where the preset clock parameter is used to update a clock parameter used before a primary communication interface of the station is in a sleep state.
In the technical scheme, before the main communication interface of the station enters a sleep state and before the secondary communication interface of the station is in a working state to receive the wake-up frame sent by the access point, data communication is carried out between the station and the access point, the adopted clock parameters may be MU EDCA parameters and basic EDCA parameters thereof, and the like, after the main communication interface of the station finishes the data communication and enters the sleep state, the EDCA parameters adopted when the station carries out the data communication are reserved, the clock parameters of a timer of the station are reserved, in order to enable the station to access a channel with higher priority after receiving the wake-up frame, a new preset clock parameter can be preset in the wake-up frame sent to the station, so that after the main communication interface of the station is awakened, the originally reserved clock parameter is replaced by a new clock parameter to access the channel according to the new clock parameter, thereby meeting the requirements of IEEE802.11ba, making the device more power efficient.
In the above technical solution, preferably, the wake-up frame is a unicast message frame or a multicast message frame; and the presetting EDCA parameters further includes: access channel priority information for indicating that a primary communication interface of the station accesses a channel at a highest priority level.
In the technical scheme, the wake-up frame can be sent to the station in a one-to-one unicast communication mode and can also be sent to the station in a one-to-many multicast communication mode, so that the station can receive the wake-up frame in multiple modes to wake up the main communication interface of the station; further, in order to enable the main communication interface of the station to access the channel with a higher priority, the preset ECDA parameter in the wake-up frame may be configured to include priority information of the access channel, so that the main communication interface of the station accesses the channel with the highest priority according to the priority information of the access channel after updating the clock parameter of the main communication interface of the station to perform data communication with the access point, and preferentially receives the downlink data cached by the access point for the main communication interface of the station.
Specifically, the access channel priority information includes an arbitration frame gap number (AIFSN), which may be set to 1 in order to enable the primary communication interface of the station to access the channel at the highest priority level.
According to the third aspect of the present invention, a communication method of a wireless local area network is further provided, where the communication method is used on a station side, and a station keeps a first preset EDCA parameter used when performing data communication with an access point before a main communication interface of the station enters a sleep state, where the first preset EDCA parameter includes a first preset clock parameter, and the communication method of the wireless local area network includes: after the main communication interface enters a dormant state, receiving a wake-up frame through a secondary communication interface of the station to wake up the main communication interface; acquiring a second preset EDCA parameter carried in the wake-up frame, wherein the second preset EDCA parameter comprises a second preset clock parameter; and updating the first preset clock parameter to the second preset clock parameter.
In the technical scheme, before a primary communication interface of a station enters a sleep state and before a secondary communication interface of the station is in a working state to receive a wake-up frame sent by an access point, data communication is carried out between the station and the access point, and clock parameters adopted by the station and the access point can be MU EDCA parameters and basic EDCA parameters and the like, while after the primary communication interface of the station finishes the data communication and enters the sleep state, the EDCA parameters adopted by the station in the data communication can be reserved, clock parameters of a timer of the station can be reserved, in order to enable the primary communication interface of the station to access a channel with higher priority after the secondary communication interface of the station receives the wake-up frame, after the wake-up frame is received, a new second preset clock parameter in the EDCA parameters carried by the station is firstly acquired, and after the first preset clock parameter reserved by the station is replaced by the second preset clock parameter, and then, the channel is accessed according to the new clock parameter, namely, the channel is accessed without waiting for competition on the basis of the original clock parameter, so that the requirement of IEEE802.11ba is met, and the equipment is more power-saving.
In the above technical solution, preferably, when the wakeup frame is a unicast information frame, the second preset clock parameter is adopted in a polling response frame responding to the wakeup frame; and when the awakening frame is a multicast information frame, responding to a polling response frame of a trigger frame sent by the access point after the awakening frame by adopting the second preset clock parameter.
In the technical scheme, a wake-up frame received by a secondary communication interface of a station may be a unicast message frame or a multicast message frame, and further, after being awakened by the wake-up frame, a primary communication interface of the station uses an updated second preset clock parameter in a process of accessing a channel when responding to the wake-up frame, so as to ensure that data communication can be performed between the access channel and the access point at a higher priority level; and when the wakeup frame is a multicast message frame, the station needs to receive the trigger frame sent by the access point after receiving the wakeup frame, and then adopts the second preset clock parameter to access the channel in the polling response frame responding to the trigger frame.
In any one of the above technical solutions, preferably, the second preset EDCA parameter further includes: accessing channel priority information; and the communication method of the wireless local area network further comprises the following steps: and after the first preset clock parameter is updated to the second clock parameter, accessing the channel with the highest priority level according to the priority information of the access channel.
In the technical scheme, the second preset EDCA parameter carried in the wake-up frame received by the station further includes access channel priority information, and then the main communication interface of the station can perform data communication with the access point through the highest priority access channel according to the access channel priority information after the clock parameter is updated, and preferentially receives downlink data cached by the access point for the access point.
Specifically, the access channel priority information includes an arbitration frame gap number (AIFSN), which may be set to 1 in order to enable the primary communication interface of the station to access the channel at the highest priority level.
According to the fourth aspect of the present invention, there is further provided a communication apparatus of a wireless local area network, configured to a station side, where the station maintains a first preset EDCA parameter used when performing data communication with an access point before a primary communication interface of the station enters a sleep state, where the first preset EDCA parameter includes a first preset clock parameter, the communication apparatus of the wireless local area network including: a receiving module, configured to receive a wake-up frame through a secondary communication interface of the station after the primary communication interface enters a sleep state, so as to wake up the primary communication interface; an obtaining module, configured to obtain a second preset EDCA parameter carried in the wake-up frame received by the receiving module, where the second preset EDCA parameter includes a second preset clock parameter; and the updating module is used for updating the first preset clock parameter into the second preset clock parameter acquired by the acquiring module.
In the technical scheme, before a primary communication interface of a station enters a sleep state and before a secondary communication interface of the station is in a working state to receive a wake-up frame sent by an access point, data communication is carried out between the station and the access point, and clock parameters adopted by the station and the access point can be MU EDCA parameters and basic EDCA parameters and the like, while after the primary communication interface of the station finishes the data communication and enters the sleep state, the EDCA parameters adopted by the station in the data communication can be reserved, clock parameters of a timer of the station can be reserved, in order to enable the primary communication interface of the station to access a channel with higher priority after the secondary communication interface of the station receives the wake-up frame, after the wake-up frame is received, a new second preset clock parameter in the EDCA parameters carried by the station is firstly acquired, and after the first preset clock parameter reserved by the station is replaced by the second preset clock parameter, and then, the channel is accessed according to the new clock parameter, namely, the channel is accessed without waiting for competition on the basis of the original clock parameter, so that the requirement of IEEE802.11ba is met, and the equipment is more power-saving.
In the above technical solution, preferably, when the wakeup frame is a unicast information frame, the second preset clock parameter is adopted in a polling response frame responding to the wakeup frame; and when the awakening frame is a multicast information frame, responding to a polling response frame of a trigger frame sent by the access point after the awakening frame by adopting the second preset clock parameter.
In the technical scheme, a wake-up frame received by a secondary communication interface of a station may be a unicast message frame or a multicast message frame, and further, after being awakened by the wake-up frame, a primary communication interface of the station uses an updated second preset clock parameter in a process of accessing a channel when responding to the wake-up frame, so as to ensure that data communication can be performed between the access channel and the access point at a higher priority level; and when the wakeup frame is a multicast message frame, the station needs to receive the trigger frame sent by the access point after receiving the wakeup frame, and then adopts the second preset clock parameter to access the channel in the polling response frame responding to the trigger frame.
In any one of the above technical solutions, preferably, the second preset EDCA parameter further includes: accessing channel priority information; and the communication device of the wireless local area network further comprises: and the access module is used for accessing the channel at the highest priority level according to the priority information of the access channel after the updating module updates the first preset clock parameter to the second clock parameter.
In the technical scheme, the second preset EDCA parameter carried in the wake-up frame received by the station further includes access channel priority information, and then the main communication interface of the station can perform data communication with the access point through the highest priority access channel according to the access channel priority information after the clock parameter is updated, and preferentially receives downlink data cached by the access point for the access point.
Specifically, the access channel priority information includes an arbitration frame gap number (AIFSN), which may be set to 1 in order to enable the primary communication interface of the station to access the channel at the highest priority level.
According to a fifth aspect of the present invention, there is also provided a communication device, comprising: a communication device of a wireless local area network according to any one of the above-described second aspect; and/or a communication device of a wireless local area network as described in any of the above fourth aspects.
Through the technical scheme of the invention, after the station equipment receives the wake-up frame, the reserved clock parameter of the station equipment is replaced by the clock parameter carried by the wake-up frame, so that the clock parameter of the station equipment is updated, the station equipment can be accessed to a network with higher priority after receiving the wake-up frame, the requirement of IEEE802.11ba is met, and the equipment is more power-saving.
Drawings
Fig. 1 is a flowchart illustrating a communication method of a wireless local area network according to a first embodiment of the present invention;
fig. 2 shows a schematic block diagram of a communication apparatus of a wireless local area network of a first embodiment of the present invention;
fig. 3 is a flowchart illustrating a communication method of a wireless lan according to a second embodiment of the present invention;
fig. 4 shows a schematic block diagram of a communication device of a wireless local area network of a second embodiment of the present invention;
fig. 5 shows a specific communication flow of a unicast message frame of an embodiment of the present invention;
fig. 6 shows a specific communication flow of a multicast message frame 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 of a wireless local area network according to a first embodiment of the present invention.
As shown in fig. 1, the communication method for the wireless local area network at the access point side according to the present invention specifically includes the following steps:
And 104, sending the wake-up frame to a secondary communication interface of the station, wherein the preset clock parameter is used for updating a clock parameter adopted before a primary communication interface of the station is in a sleep state.
In this embodiment, before the primary communication interface of the station enters the sleep state and before the secondary communication interface thereof is in the working state to receive the wake-up frame sent by the access point, the station and the access point perform data communication, and the clock parameters adopted by the primary communication interface of the station may be MU EDCA parameters and basic EDCA parameters thereof, etc., while after the primary communication interface of the station completes the data communication and enters the sleep state, the EDCA parameters adopted by the primary communication interface of the station during the data communication are retained, and the clock parameters of the timer thereof are retained, so that the station can access the channel with higher priority after receiving the wake-up frame, a new preset clock parameter may be preset in the wake-up frame sent to the station, so that after the primary communication interface of the station is woken up, the originally retained clock parameter is replaced by a new clock parameter to access the channel according to the new clock parameter, thereby satisfying the requirements of ieee802.11ba, making the device more power efficient.
Further, in the above embodiments, for example, in general data communication, the clock parameter used by the station may be mode 1, and the wake-up frame requires the clock parameter used by the station to be mode 2, so that the mode 1 is completely replaced by the mode 2 after the station receives the wake-up frame.
Further, in any of the above embodiments, the wake-up frame is a unicast message frame or a multicast message frame, that is, the wake-up frame can be sent to the station in a one-to-one unicast communication mode or a one-to-many multicast communication mode, so that the station can receive the wake-up frame in multiple ways to wake up the main communication interface of the station.
Further, in any of the above embodiments, the preset EDCA parameter further includes access channel priority information, where the access channel priority information is used to instruct the primary communication interface of the station to access a channel with a highest priority level.
In this embodiment, the wake-up frame can be sent to the station in a one-to-one unicast communication mode, or in a one-to-many multicast communication mode, so that the station can receive the wake-up frame in multiple ways to wake up its main communication interface; further, in order to enable the main communication interface of the station to access the channel with a higher priority, the preset ECDA parameter in the wake-up frame may be configured to include priority information of the access channel, so that the main communication interface of the station performs data communication with the access point in the access channel with the highest priority according to the priority information of the access channel, and preferentially receives the downlink data cached by the access point.
Specifically, the access channel priority information includes an arbitration frame gap number (AIFSN), which may be set to 1 in order to enable the primary communication interface of the station to access the channel at the highest priority level.
The main body of the communication method shown in fig. 1 may be an access point device in a network formed by an access point and a station, such as a router or a server with a Wi-Fi interface.
Fig. 2 shows a schematic block diagram of a communication apparatus of a wireless local area network according to a first embodiment of the present invention.
As shown in fig. 2, a communication apparatus 20 for an access point side wireless lan according to the present invention includes: a generation module 202 and a sending module 204.
The generating module 202 is configured to generate a wakeup frame, where the wakeup frame is used to wake up a main communication interface of a station in a sleep state, and the wakeup frame includes a preset EDCA parameter, where the preset EDCA parameter includes a preset clock parameter; the sending module 204 is configured to send the wake-up frame generated by the generating module 202 to the secondary communication interface of the station, where the preset clock parameter is used to update a clock parameter used before a primary communication interface of the station is in a sleep state.
In this embodiment, before the primary communication interface of the station enters the sleep state and before the secondary communication interface thereof is in the working state to receive the wake-up frame sent by the access point, the station and the access point perform data communication, and the clock parameters adopted by the primary communication interface of the station may be MU EDCA parameters and basic EDCA parameters thereof, etc., while after the primary communication interface of the station completes the data communication and enters the sleep state, the EDCA parameters adopted by the primary communication interface of the station during the data communication are retained, and the clock parameters of the timer thereof are retained, so that the station can access the channel with higher priority after receiving the wake-up frame, a new preset clock parameter may be preset in the wake-up frame sent to the station, so that after the primary communication interface of the station is woken up, the originally retained clock parameter is replaced by a new clock parameter to access the channel according to the new clock parameter, thereby satisfying the requirements of ieee802.11ba, making the device more power efficient.
Further, in the above embodiments, for example, in general data communication, the clock parameter used by the station may be mode 1, and the wake-up frame requires the clock parameter used by the station to be mode 2, so that the mode 1 is completely replaced by the mode 2 after the station receives the wake-up frame.
Further, in any of the above embodiments, the wake-up frame is a unicast message frame or a multicast message frame, that is, the wake-up frame can be sent to the station in a one-to-one unicast communication mode or a one-to-many multicast communication mode, so that the station can receive the wake-up frame in multiple ways to wake up the main communication interface of the station.
Further, in any of the above embodiments, the preset EDCA parameter further includes: access channel priority information for indicating that a primary communication interface of the station accesses a channel at a highest priority level.
In this embodiment, in order to enable the main communication interface of the station to access the channel with a higher priority, the preset ECDA parameter in the wake-up frame may be configured to include priority information of the access channel, so that the main communication interface of the station accesses the channel with the highest priority according to the priority information of the access channel after updating the clock parameter of the main communication interface of the station to perform data communication with the access point, and preferentially receives the downlink data buffered by the access point.
Specifically, the access channel priority information includes an arbitration frame gap number (AIFSN), which may be set to 1 in order to enable the primary communication interface of the station to access the channel at the highest priority level.
In a specific implementation, the transmitting module 204 may be a transmitter or an antenna, etc.; the generating module 202 may be a central processor or a baseband processor, etc.
Fig. 3 is a flowchart illustrating a communication method of a wireless lan according to a second embodiment of the present invention.
As shown in fig. 3, according to the communication method for the wlan on the station side in the embodiment of the present invention, the station keeps a first preset EDCA parameter used when performing data communication with the access point before the primary communication interface of the station enters the sleep state, where the first preset EDCA parameter includes a first preset clock parameter, and the communication method for the wlan specifically includes the following steps:
In this embodiment, before the primary communication interface of the station enters the sleep state and before the secondary communication interface thereof is in the working state to receive the wake-up frame sent by the access point, data communication is performed between the station and the access point, and the adopted clock parameters may be MU EDCA parameters and basic EDCA parameters thereof, and after the primary communication interface of the station completes the data communication and enters the sleep state, the EDCA parameters adopted by the primary communication interface of the station during the data communication are retained, and simultaneously the clock parameters of the timer thereof are retained, so that the primary communication interface of the station can access the channel with higher priority after the secondary communication interface of the station receives the wake-up frame, after receiving the wake-up frame, first obtaining a new second preset clock parameter in the EDCA parameter carried by the primary communication interface of the station, and replacing the first preset clock parameter retained by the second preset clock parameter, and then, the channel is accessed according to the new clock parameter, namely, the channel is accessed without waiting for competition on the basis of the original clock parameter, so that the requirement of IEEE802.11ba is met, and the equipment is more power-saving.
The interface for the station device to receive the wakeup frame is a secondary communication interface, and the purpose of receiving the wakeup frame is to wake up a primary communication interface of the station device for communication so as to obtain a downlink data frame buffered by the access point device.
Further, in the above embodiments, for example, in general data communication, the clock parameter used by the station may be mode 1, and the wake-up frame requires the clock parameter used by the station to be mode 2, so that the mode 1 is completely replaced by the mode 2 after the station receives the wake-up frame.
Further, in any of the above embodiments, when the wakeup frame is a unicast information frame, the polling response frame responding to the wakeup frame adopts the second preset clock parameter; and when the awakening frame is a multicast information frame, responding to a polling response frame of a trigger frame sent by the access point after the awakening frame by adopting the second preset clock parameter.
In this embodiment, the wake-up frame received by the secondary communication interface of the station may be a unicast message frame or a multicast message frame, and further, after being woken up by the wake-up frame, the primary communication interface of the station uses the updated second preset clock parameter in the process of accessing the channel when responding to the wake-up frame, so as to ensure that data communication can be performed between the access channel and the access point with a higher priority level; and when the wakeup frame is a multicast message frame, the station needs to receive the trigger frame sent by the access point after receiving the wakeup frame, and then adopts the second preset clock parameter to access the channel in the polling response frame responding to the trigger frame.
Further, in any of the above embodiments, the second preset EDCA parameter further includes: accessing channel priority information; and the communication method of the wireless local area network further comprises the following steps: and after the first preset clock parameter is updated to the second clock parameter, accessing the channel with the highest priority level according to the priority information of the access channel.
In this embodiment, the second predetermined EDCA parameter carried in the wake-up frame received by the station further includes access channel priority information, and the main communication interface of the station can perform data communication with the access point in the highest priority access channel according to the access channel priority information after the clock parameter is updated, and preferentially receives the downlink data cached by the access point for the access point.
Specifically, the access channel priority information includes an arbitration frame gap number (AIFSN), which may be set to 1 in order to enable the primary communication interface of the station to access the channel at the highest priority level.
The main body of the communication method shown in fig. 3 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).
Fig. 4 shows a schematic block diagram of a communication apparatus of a wireless local area network according to a second embodiment of the present invention.
As shown in fig. 4, according to the communication apparatus 40 for a wireless local area network on a station side of the present invention, a station maintains a first preset EDCA parameter used when a data communication is performed with an access point before a primary communication interface of the station enters a sleep state, where the first preset EDCA parameter includes a first preset clock parameter, and the communication apparatus 40 for a wireless local area network includes: a receiving module 402, an obtaining module 404, and an updating module 406.
The receiving module 402 is configured to receive a wake-up frame through a secondary communication interface of the station after the primary communication interface enters a sleep state, so as to wake up the primary communication interface; the obtaining module 404 is configured to obtain a second preset EDCA parameter carried in the wake-up frame received by the receiving module 402, where the second preset EDCA parameter includes a second preset clock parameter; an updating module 406, configured to update the first preset clock parameter to the second preset clock parameter obtained by the obtaining module 404.
In this embodiment, before the primary communication interface of the station enters the sleep state and before the secondary communication interface thereof is in the working state to receive the wake-up frame sent by the access point, data communication is performed between the station and the access point, and the adopted clock parameters may be MU EDCA parameters and basic EDCA parameters thereof, and after the primary communication interface of the station completes the data communication and enters the sleep state, the EDCA parameters adopted by the primary communication interface of the station during the data communication are retained, and simultaneously the clock parameters of the timer thereof are retained, so that the primary communication interface of the station can access the channel with higher priority after the secondary communication interface of the station receives the wake-up frame, after receiving the wake-up frame, first obtaining a new second preset clock parameter in the EDCA parameter carried by the primary communication interface of the station, and replacing the first preset clock parameter retained by the second preset clock parameter, and then, the channel is accessed according to the new clock parameter, namely, the channel is accessed without waiting for competition on the basis of the original clock parameter, so that the requirement of IEEE802.11ba is met, and the equipment is more power-saving.
The interface for the station device to receive the wakeup frame is a secondary communication interface, and the purpose of receiving the wakeup frame is to wake up a primary communication interface of the station device for communication so as to obtain a downlink data frame buffered by the access point device.
Further, in the above embodiments, for example, in general data communication, the clock parameter used by the station may be mode 1, and the wake-up frame requires the clock parameter used by the station to be mode 2, so that the mode 1 is completely replaced by the mode 2 after the station receives the wake-up frame.
Further, in any of the above embodiments, when the wakeup frame is a unicast information frame, the polling response frame responding to the wakeup frame adopts the second preset clock parameter; and when the awakening frame is a multicast information frame, responding to a polling response frame of a trigger frame sent by the access point after the awakening frame by adopting the second preset clock parameter.
In this embodiment, the wake-up frame received by the secondary communication interface of the station may be a unicast message frame or a multicast message frame, and further, after being woken up by the wake-up frame, the primary communication interface of the station uses the updated second preset clock parameter in the process of accessing the channel when responding to the wake-up frame, so as to ensure that data communication can be performed between the access channel and the access point with a higher priority level; and when the wakeup frame is a multicast message frame, the station needs to receive the trigger frame sent by the access point after receiving the wakeup frame, and then adopts the second preset clock parameter to access the channel in the polling response frame responding to the trigger frame.
Further, in any of the above embodiments, the second preset EDCA parameter further includes: accessing channel priority information; and the communication means 40 of the wireless local area network further comprises: an accessing module 408, configured to access a channel at the highest priority level according to the priority information of the access channel after the updating module 406 updates the first preset clock parameter to the second clock parameter.
In this embodiment, the second predetermined EDCA parameter carried in the wake-up frame received by the station further includes access channel priority information, and the main communication interface of the station can perform data communication with the access point in the highest priority access channel according to the access channel priority information after the clock parameter is updated, and preferentially receives the downlink data cached by the access point for the access point.
Specifically, the access channel priority information includes an arbitration frame gap number (AIFSN), which may be set to 1 in order to enable the primary communication interface of the station to access the channel at the highest priority level.
In a specific implementation, the receiving module 402 may be a receiver, an antenna, or the like, and the obtaining module 404, the updating module 406, and the accessing module 408 may be a signal processor, a central processing unit, a baseband processor, or the like.
Further, in any of the embodiments shown in fig. 1 to 4, the wake-up frame may be denoted as an AC _ WUR frame, and the field form thereof in ieee802.11ba may be as shown in table 1 and table 2 below:
TABLE 1
TABLE 2
In this case, the reserved bits ("reserved" in table 2) are used to indicate the aci (access Control index) and acm (access Control index) of the AC _ WUR response frame, and the AIFSN of the AC _ WUR response frame is set to 1 (idle latency).
In order to maximize the power consumption of the device, according to the communication scheme of the wireless local area network of the present invention, a specific setting manner of the parameters of the AC _ WUR frame is given below, as shown in table 3:
TABLE 3
Wherein Cwmin is 2 ECWmin-1,
CWmax is 2 ECWmax-1, where CWmin may be 0 and CWmax may be 32767.
The four types of messages are respectively four priority queues of the existing voice stream message, video stream message, best effort stream message and background stream message, and the AIFSN parameter of the table 3 can be known, wherein the four types of messages preempt a wireless channel from low to high for receiving and sending, and the AIFSN parameter of the AC WUR is set to 1 so as to ensure that the waiting time of the AC WUR access channel is lower than that of the existing four types of messages, namely, the station equipment can access the communication channel by the priority higher than the four types of messages according to the parameter setting of the table 3 so as to obtain the downlink data buffered in the access point equipment, and the power consumption is optimized by reducing the waiting time so as to improve the data receiving and sending efficiency.
In addition, "CWmin" represents a minimum value of a contention window (contention Windows), "CWmax" represents a maximum value of a contention window (contention Windows), the size of the contention window determines an average back-off time value, and the larger these two values are, the longer the average back-off time of the user is.
In table 3, TXOP (Transmission Opportunity) limited represents the maximum duration that a user may occupy a channel after one successful contention. The larger the value is, the longer the time that the user can occupy the channel at one time is, and if the value is 0, only one message can be sent after the user occupies the channel every time. Fragmentation is necessary if a data frame is too large to be sent out in one TXOP.
In summary, EDCA (Enhanced Distributed Channel Access) is used as a Channel contention mechanism defined by WMM, and a high-priority packet has a right to be sent preferentially over a low-priority packet.
Further, as shown in fig. 5, when the wakeup frame is a unicast message frame, before the primary communication interface of the station goes into the sleep state, it performs Data communication with the access point, that is, Data (Data) sent by the Access Point (AP) to the Station (STA), after the station successfully receives the Data, the station makes an Acknowledgement to feed back an ACK (Acknowledgement character) to the access point, after the Data communication is finished, before the primary communication interface of the station goes into the sleep state, the parameters used when it performs communication are reserved, so the timing mechanism of its timer is also reserved; further, when the second communication interface receives a wake-up frame (wake up) sent by the access point, the main communication interface wakes up the main communication interface, responds to the wake-up frame, and updates the reserved clock parameters by using the new clock parameters in the EDCA parameters carried by the wake-up frame, so as to send a polling response frame (WUR-POLL) to the access point according to the new clock parameters, and contend for an access channel at a higher priority level.
Further, as shown in fig. 6, when the wake-up frame is a multicast message frame, before the master communication interface of each station in the multicast receiving group goes into the dormant state, it performs Data communication with the access point, that is, Data (Data) sent by the Access Point (AP) to The Stations (STAs), after the Data is successfully received, each station confirms to feed back ACK to the access point, and after the Data communication is finished, before the master communication interface of each station goes into the dormant state, the parameters used when it performs communication are reserved, so the timing mechanism of its timer (timer) is also reserved; further, after receiving a wake-up frame (wake up) sent by the access point, the secondary communication interfaces of each station wake up respective primary communication interfaces, update the reserved clock parameters by using the new clock parameters in the EDCA parameters carried by the wake-up frame, and receive a Trigger frame (Trigger) sent by the access point, and the primary communication interfaces respond to the Trigger frame and send a polling response frame (WUR-POLL) to the access point according to the latest clock parameters to compete for access to the channel at a higher priority level.
The present invention also provides a communication device, comprising: 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 explained in detail with the accompanying drawings, and the clock parameter of the station equipment is updated by replacing the reserved clock parameter with the clock parameter carried by the wake-up frame after the station equipment receives the wake-up frame, so that the station equipment can access the network with higher priority after receiving the wake-up frame, the requirement of IEEE802.11ba is met, and the equipment is more power-saving.
In the technical solutions of the present invention, 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 (11)
1. A communication method of a wireless local area network is applicable to an access point side, and is characterized in that the communication method of the wireless local area network comprises the following steps:
generating a wake-up frame, wherein the wake-up frame is used for waking up a main communication interface of a station in a dormant state, and the wake-up frame comprises preset EDCA parameters, and the preset EDCA parameters comprise preset clock parameters;
sending the wake-up frame to a secondary communication interface of the station,
the preset clock parameter is used for updating a clock parameter adopted before a main communication interface of the station is in a dormant state;
and after the main communication interface of the station is awakened, the station accesses a channel according to a new clock parameter, so that the station can save electricity.
2. The communication method of the wireless local area network according to claim 1,
the awakening frame is a unicast message frame or a multicast message frame; and
the preset EDCA parameters further include access channel priority information, where the access channel priority information is used to indicate that a primary communication interface of the station accesses a channel at a highest priority level.
3. A communication apparatus of a wireless local area network, adapted to an access point side, the communication apparatus of the wireless local area network comprising:
the device comprises a generation module, a receiving module and a sending module, wherein the generation module is used for generating a wake-up frame, the wake-up frame is used for waking up a main communication interface of a station in a dormant state, and the wake-up frame comprises preset EDCA parameters, and the preset EDCA parameters comprise preset clock parameters;
a sending module, configured to send the wake-up frame generated by the generating module to a secondary communication interface of the station, where the preset clock parameter is used to update a clock parameter used before a primary communication interface of the station is in a sleep state;
and after the main communication interface of the station is awakened, the station accesses a channel according to a new clock parameter, so that the station can save electricity.
4. The communication device of the wireless local area network according to claim 3,
the awakening frame is a unicast message frame or a multicast message frame; and
the preset EDCA parameters further comprise: access channel priority information for indicating that a primary communication interface of the station accesses a channel at a highest priority level.
5. A communication method of a wireless local area network is suitable for a station side, and is characterized in that a station reserves a first preset EDCA parameter adopted when a main communication interface of the station enters a sleep state and carries out data communication with an access point, wherein the first preset EDCA parameter comprises a first preset clock parameter, and the communication method of the wireless local area network comprises the following steps:
after the main communication interface enters a dormant state, receiving a wake-up frame through a secondary communication interface of the station to wake up the main communication interface;
acquiring a second preset EDCA parameter carried in the wake-up frame, wherein the second preset EDCA parameter comprises a second preset clock parameter;
updating the first preset clock parameter to the second preset clock parameter;
and after the main communication interface of the station is awakened, the station accesses a channel according to a new clock parameter, so that the station can save electricity.
6. The communication method of the wireless local area network according to claim 5,
when the wake-up frame is a unicast information frame, adopting the second preset clock parameter in a polling response frame responding to the wake-up frame;
and when the awakening frame is a multicast information frame, responding to a polling response frame of a trigger frame sent by the access point after the awakening frame by adopting the second preset clock parameter.
7. The method according to claim 5 or 6, wherein the second predetermined EDCA parameter further comprises: accessing channel priority information; and
the communication method of the wireless local area network further comprises the following steps:
and after the first preset clock parameter is updated to the second clock parameter, accessing the channel with the highest priority level according to the priority information of the access channel.
8. A communication device of a wireless local area network is suitable for a station side, and is characterized in that a station reserves a first preset EDCA parameter adopted when a main communication interface of the station enters a sleep state and carries out data communication with an access point, wherein the first preset EDCA parameter comprises a first preset clock parameter, and the communication device of the wireless local area network comprises:
a receiving module, configured to receive a wake-up frame through a secondary communication interface of the station after the primary communication interface enters a sleep state, so as to wake up the primary communication interface;
an obtaining module, configured to obtain a second preset EDCA parameter carried in the wake-up frame received by the receiving module, where the second preset EDCA parameter includes a second preset clock parameter;
the updating module is used for updating the first preset clock parameter to the second preset clock parameter acquired by the acquiring module;
and after the main communication interface of the station is awakened, the station accesses a channel according to a new clock parameter, so that the station can save electricity.
9. The communication device of the wireless local area network according to claim 8,
when the wake-up frame is a unicast information frame, adopting the second preset clock parameter in a polling response frame responding to the wake-up frame;
and when the awakening frame is a multicast information frame, responding to a polling response frame of a trigger frame sent by the access point after the awakening frame by adopting the second preset clock parameter.
10. Communication device of a wireless local area network according to claim 8 or 9, wherein the second preset EDCA parameter further comprises: accessing channel priority information; and
the communication device of the wireless local area network further comprises:
and the access module is used for accessing the channel at the highest priority level according to the priority information of the access channel after the updating module updates the first preset clock parameter to the second clock parameter.
11. A communication device, comprising:
communication means of a wireless local area network according to claim 3 or 4; and/or
Communication device of a wireless local area network according to any of claims 8 to 10.
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