CN108712775B - Communication method and communication device, access point equipment and station equipment - Google Patents

Communication method and communication device, access point equipment and station equipment Download PDF

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CN108712775B
CN108712775B CN201810463143.4A CN201810463143A CN108712775B CN 108712775 B CN108712775 B CN 108712775B CN 201810463143 A CN201810463143 A CN 201810463143A CN 108712775 B CN108712775 B CN 108712775B
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frame
multicast
time period
period
message frame
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CN108712775A (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
    • H04W52/0209—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
    • 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
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • 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 and a communication device of a wireless local area network, access point equipment and station equipment, wherein the communication method of the wireless local area network for the access point equipment comprises the following steps: generating a target management frame and sending the target management frame to the site equipment, wherein a wakeup clock is arranged in the target management frame; generating a multicast wakeup message frame; generating a unicast wake-up message frame; and respectively sending the multicast wakeup message frame and the unicast wakeup message frame to the site equipment so as to respectively receive the multicast cache data frame corresponding to the multicast wakeup message frame and the unicast cache data frame corresponding to the unicast wakeup message frame in a first time period and a second time period which are arranged in time sequence in the wakeup clock after the site equipment is switched from the WUR state to the PCR state. By the technical scheme, the power consumption requirement of the station equipment can be met, the equipment is more power-saving, and the requirement of IEEE802.11ba is met.

Description

Communication method and communication device, access point equipment and station equipment
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 device, and a station device.
Background
In the year 2016, 7, IEEE (Institute of Electrical and Electronics Engineers) 802.11 established a research group WUR (wake Up receiver) of the next generation Wi-Fi (Wireless Fidelity) technology, namely IEEE802.11ba, which is mainly applied in the aspect of internet of things, in order to save the power consumption of devices as much as possible, and most mainly in order to make devices receiving wake-Up frames (wake-Up message frames, namely WUR message frames) save the power consumption of devices as much as possible, wherein the power consumption required by the devices to receive the wake-Up frames is not more than 1 mW.
At present, in the process of formulation and discussion of standards, it is specified that after a main communication interface of a station device is woken up, it is necessary to receive a downlink data frame buffered by an access point device for the station device, but considering that the station device supporting a WUR function has a particularly high requirement on power consumption, a mechanism for how the station device receives the downlink data frame buffered in a multicast and unicast communication mode needs to be defined to meet the power consumption requirement of the device.
Disclosure of Invention
The invention provides a new communication scheme of the wireless local area network based on at least one of the technical problems, and can meet the power consumption requirement of the station equipment by defining the receiving mechanism of the cache data frame in the multicast communication mode and the unicast communication mode, so that the equipment is more power-saving and meets the requirement of IEEE802.11ba.
In view of this, according to a first aspect of the present invention, a communication method of a wireless local area network is provided, where the communication method of the wireless local area network is used for an access point device, and the communication method of the wireless local area network includes: generating a target management frame and sending the target management frame to the site equipment, wherein a wakeup clock is arranged in the target management frame; generating a multicast wakeup message frame; generating a unicast wake-up message frame; and respectively sending the multicast wakeup message frame and the unicast wakeup message frame to the site equipment so as to respectively receive the multicast cache data frame corresponding to the multicast wakeup message frame and the unicast cache data frame corresponding to the unicast wakeup message frame in a first time period and a second time period which are arranged in time sequence in the wakeup clock after the site equipment is switched from the WUR state to the PCR state.
In the technical scheme, considering that the station device receives different types of data frames in a sequential order, the access point device may send a target management frame containing an awake clock to the station device in advance, so that the station device receives the different types of data frames according to an order indicated by the awake clock, further, a secondary Communication interface in a continuously awake state or a periodically dormant state of the station device in the WUR state monitors a multicast wakeup message frame and a unicast wakeup message frame generated and sent by the access point device, so as to wake up a Primary Communication interface in the dormant state of the station device in the WUR state so that the station device enters a PCR (Primary Communication Radio) state, and then the Primary Communication interface further receives a multicast cache data frame corresponding to the multicast wakeup message frame and a unicast cache data frame corresponding to the unicast wakeup message frame respectively at a first time period and a second time period of the awake clock in the chronological order, therefore, the effective definition of the receiving mechanism of the cache data frame in the multicast communication mode and the unicast communication mode is realized, the power consumption requirement of the station equipment is met, the equipment is more power-saving, and the requirement of IEEE802.11ba is met.
Wherein the target management frame comprises: a TBTT (target Beacon Transmission time) Beacon frame, that is, an awake clock including a first time period and a second time period is set in the TBTT Beacon frame to indicate that the access point device buffers a corresponding data frame for the station device.
In the foregoing technical solution, preferably, the sending the multicast wakeup message frame and the unicast wakeup message frame to the site device respectively includes: respectively sending the multicast wakeup message frame and the unicast wakeup message frame in a third time interval and a fourth time interval of the wakeup clock; wherein the third time period is arranged before the first time period in time sequence, and the fourth time period is arranged after the first time period and before the second time period in time sequence.
In the technical scheme, when the access point device sends the multicast wakeup message frame and the unicast wakeup message frame to the site device, the same operation is performed according to the wakeup clock, specifically, the multicast wakeup message frame and the unicast wakeup message frame are respectively sent in the third time period and the fourth time period of the wakeup clock, and then the access point device sends the multicast wakeup message frame, the multicast cache data frame, the unicast wakeup message frame and the unicast cache data frame to the site device in sequence according to the time sequence in the wakeup clock.
In any of the above technical solutions, preferably, the first period, the second period, the third period, and the fourth period are all located in a non-contention period CFP, and the first period and the second period are located after a period in which the access point device transmits the target management frame; and the third period and the fourth period both contain a transition delay, wherein the transition delay refers to a processing time for the station device to switch from the WUR state to the PCR state.
In the technical scheme, in order to further meet the power consumption requirement of the station equipment, the first time period, the second time period, the third time period and the fourth time period of the wakeup clock are all arranged in a non-contention period CFP, the station equipment can complete the receiving of the multicast cache data frame and the unicast cache data frame in the non-contention period without competing channel resources in a contention period CP, so that the time point of receiving the multicast cache data frame and the unicast cache data frame by the station equipment supporting the WUR function is earlier than that of the station equipment not supporting the WUR function, the power consumption requirement of the station equipment supporting the WUR function is met, and the equipment is more power-saving. In order to enable the station equipment to successfully receive the multicast cache data frame and the unicast cache data frame respectively in the first time interval and the second time interval of the wakeup clock, the target management frame needs to be broadcast before the first time interval and the second time interval of the wakeup clock; furthermore, considering that the station device needs to switch from the WUR state to the PCR state according to the corresponding wake-up message frame before receiving the corresponding data frame, in order to ensure that the station device can sufficiently receive the multicast buffered data frame and the unicast buffered data frame in the first period and the second period, the third period and the fourth period should respectively include a switching delay to allow the station device to have enough processing time to switch from the WUR state to the PCR state.
Further, if the station device that receives the multicast wakeup message frame and the unicast wakeup message frame does not receive the target management frame, the station device may sleep before the access point device broadcasts the target management frame or may switch from the WUR state to the PCR state before the access point device broadcasts the target management frame at a certain time point.
Furthermore, the station device receiving the multicast wakeup frame and the unicast wakeup message frame may receive the corresponding downlink data frame in a manner of receiving a cf (context free) -Poll power saving polling frame sent by the access point device in the first time period and the second time period, respectively, or obtain the corresponding downlink data frame in a manner of sending a ps (power saving) -Poll power saving polling frame.
In any one of the foregoing technical solutions, preferably, the generating a multicast wakeup message frame includes: and configuring a level identification bit contained in the multicast wakeup message frame, wherein the level identification bit is used for indicating a receiving time sequence of each site device for receiving the multicast cache data frame, and the receiving time sequence corresponds to the service level of the multicast cache data frame.
In this technical solution, in order to ensure efficiency of receiving a corresponding cached data frame by each station device corresponding to a multicast cached data frame, when an access point device generates a multicast wakeup message frame for waking up a main communication interface of each station device, a level identifier corresponding to a service level of the multicast cached data frame may be set in the access point device, so that each station device receives a downlink data frame cached by the access point device according to a receiving time sequence indicated by the level identifier, and when a data frame with a higher service level is preferentially received by the corresponding station device, other station devices may sleep, and specifically, may sleep according to an empirical value such as a shortest duration of the data frame.
According to the second aspect of the present invention, there is further provided a communication apparatus of a wireless local area network, where the communication apparatus of the wireless local area network is used for an access point device, and the communication apparatus of the wireless local area network includes: the processing module is used for generating a target management frame and sending the target management frame to the site equipment, wherein a wakeup clock is arranged in the target management frame; the first generation module is used for generating a multicast wakeup message frame; a second generating module, configured to generate a unicast wake-up message frame; a sending module, configured to send the multicast wakeup message frame and the unicast wakeup message frame to the site device, so that after the site device switches from a WUR state to a PCR state, the multicast cache data frame corresponding to the multicast wakeup message frame and the unicast cache data frame corresponding to the unicast wakeup message frame are received in a first time period and a second time period that are arranged in time sequence in the wakeup clock, respectively.
In the technical scheme, considering the time sequence when the station equipment receives different types of data frames, the access point equipment can enable the station equipment to receive different types of data frames according to the sequence indicated by the wakeup clock by sending a target management frame containing the wakeup clock to the station equipment in advance, and further enable a secondary communication interface of the station equipment in the WUR state, which is in a continuous wakeup state or a periodic sleep state, to monitor a multicast wakeup message frame and a unicast wakeup message frame generated and sent by the access point equipment, so as to wake up a main communication interface of the station equipment in the WUR state, which is in the sleep state, to enable the station equipment to enter a PCR state, and then the main communication interface further receives a multicast cache data frame corresponding to the multicast wakeup message frame and a unicast cache data frame corresponding to the unicast wakeup message frame respectively in a first time period and a second time period which are arranged in time sequence of the wakeup clock, therefore, the effective definition of the receiving mechanism of the cache data frame in the multicast communication mode and the unicast communication mode is realized, the power consumption requirement of the station equipment is met, the equipment is more power-saving, and the requirement of IEEE802.11ba is met.
Wherein the target management frame comprises: the TBTT beacon frame, that is, the TBTT beacon frame is provided with an awake clock including a first period and a second period, so as to indicate that the access point device buffers a corresponding data frame for the station device.
In the foregoing technical solution, preferably, the sending module is specifically configured to: respectively sending the multicast wakeup message frame and the unicast wakeup message frame in a third time interval and a fourth time interval of the wakeup clock; wherein the third time period is arranged before the first time period in time sequence, and the fourth time period is arranged after the first time period and before the second time period in time sequence.
In the technical scheme, when the access point device sends the multicast wakeup message frame and the unicast wakeup message frame to the site device, the same operation is performed according to the wakeup clock, specifically, the multicast wakeup message frame and the unicast wakeup message frame are respectively sent in the third time period and the fourth time period of the wakeup clock, and then the access point device sends the multicast wakeup message frame, the multicast cache data frame, the unicast wakeup message frame and the unicast cache data frame to the site device in sequence according to the time sequence in the wakeup clock.
In any of the above technical solutions, preferably, the first period, the second period, the third period, and the fourth period are all located in a non-contention period CFP, and the first period and the second period are located after a period in which the access point device transmits the target management frame; and the third period and the fourth period both contain a transition delay, wherein the transition delay refers to a processing time for the station device to switch from the WUR state to the PCR state.
In the technical scheme, in order to further meet the power consumption requirement of the station equipment, the first time period, the second time period, the third time period and the fourth time period of the wakeup clock are all arranged in a non-contention period CFP, the station equipment can complete the receiving of the multicast cache data frame and the unicast cache data frame in the non-contention period without competing channel resources in a contention period CP, so that the time point of receiving the multicast cache data frame and the unicast cache data frame by the station equipment supporting the WUR function is earlier than that of the station equipment not supporting the WUR function, the power consumption requirement of the station equipment supporting the WUR function is met, and the equipment is more power-saving. In order to enable the station equipment to successfully receive the multicast cache data frame and the unicast cache data frame respectively in the first time interval and the second time interval of the wakeup clock, the target management frame needs to be broadcast before the first time interval and the second time interval of the wakeup clock; furthermore, considering that the station device needs to switch from the WUR state to the PCR state according to the corresponding wake-up message frame before receiving the corresponding data frame, in order to ensure that the station device can sufficiently receive the multicast buffered data frame and the unicast buffered data frame in the first period and the second period, the third period and the fourth period should respectively include a switching delay to allow the station device to have enough processing time to switch from the WUR state to the PCR state.
Further, if the station device that receives the multicast wakeup message frame and the unicast wakeup message frame does not receive the target management frame, the station device may sleep before the access point device broadcasts the target management frame or may switch from the WUR state to the PCR state before the access point device broadcasts the target management frame at a certain time point.
Furthermore, the station device receiving the multicast wakeup frame and the unicast wakeup message frame may receive the corresponding downlink data frame in a manner of receiving the CF-Poll power saving polling frame sent by the access point device in the first time period and the second time period, respectively, or obtain the corresponding downlink data frame in a form of sending the PS-Poll power saving polling frame.
In any of the above technical solutions, preferably, the first generating module is specifically configured to: and configuring a level identification bit contained in the multicast wakeup message frame, wherein the level identification bit is used for indicating a receiving time sequence of each site device for receiving the multicast cache data frame, and the receiving time sequence corresponds to the service level of the multicast cache data frame.
In this technical solution, in order to ensure efficiency of receiving a corresponding cached data frame by each station device corresponding to a multicast cached data frame, when an access point device generates a multicast wakeup message frame for waking up a main communication interface of each station device, a level identifier corresponding to a service level of the multicast cached data frame may be set in the access point device, so that each station device receives a downlink data frame cached by the access point device according to a receiving time sequence indicated by the level identifier, and when a data frame with a higher service level is preferentially received by the corresponding station device, other station devices may sleep, and specifically, may sleep according to an empirical value such as a shortest duration of the data frame.
According to a third aspect of the present invention, an access point device is further provided, which includes the communication apparatus of the wireless local area network in any one of the above-mentioned technical solutions of the second aspect, so that the access point device has the same technical effects as the communication apparatus of the wireless local area network in any one of the above-mentioned technical solutions of the second aspect, and details are not repeated here.
According to the fourth aspect of the present invention, there is further provided a communication method of a wireless local area network, where the communication method of the wireless local area network is used for a station device, and the communication method of the wireless local area network includes: receiving a target management frame from access point equipment, and acquiring an awakening clock contained in the target management frame; after the station equipment enters a WUR state, receiving a multicast awakening message frame and a unicast awakening message frame from the access point equipment; and after the station equipment is switched from the WUR state to the PCR state, respectively receiving a multicast cache data frame corresponding to the multicast wakeup message frame and a unicast cache data frame corresponding to the unicast wakeup message frame in a first time period and a second time period which are arranged in time sequence in the wakeup clock.
In the technical scheme, considering the time sequence when the station equipment receives different types of data frames, the station equipment can receive corresponding data frames according to an awakening clock contained in a target management frame received from the access point equipment, and specifically, after entering a WUR state, the station equipment monitors a multicast awakening message frame and a unicast awakening message frame sent by the access point equipment through a secondary communication interface in a continuous awakening state or a periodic sleeping state to awaken a main communication interface in the sleeping state and then switch from the WUR state to a PCR state, so that the awakened main communication interface further receives a multicast cache data frame corresponding to the multicast awakening message frame and a unicast cache data frame corresponding to the unicast awakening message frame respectively in a first time period and a second time period of the awakening clock which are arranged in time sequence, thus, the effective definition of a receiving mechanism of the cache data frames in the multicast communication mode and the unicast communication mode is realized, the power consumption requirements of the station equipment are met, the equipment is more power-saving, and the requirements of IEEE802.11ba are met.
Wherein the target management frame comprises: the TBTT beacon frame, that is, the TBTT beacon frame is provided with an awake clock including a first period and a second period, so as to indicate that the access point device buffers a corresponding data frame for the station device.
In the foregoing technical solution, preferably, the receiving a multicast wakeup message frame and a unicast wakeup message frame from the access point device includes: receiving the multicast wakeup message frame and the unicast wakeup message frame at a third time interval and a fourth time interval of the wakeup clock respectively; wherein the third time period is arranged before the first time period in time sequence, and the fourth time period is arranged after the first time period and before the second time period in time sequence.
In the technical scheme, a secondary communication interface of the station equipment monitors a multicast wakeup message frame and a unicast wakeup message frame after entering a WUR state and then performs the monitoring according to a wakeup clock, specifically, receives the multicast wakeup message frame and the unicast wakeup message frame respectively in a third time period and a fourth time period of the wakeup clock, and then the station equipment receives the multicast wakeup message frame, the multicast cache data frame, the unicast wakeup message frame and the unicast cache data frame from the access point equipment in sequence according to a time sequence in the wakeup clock.
In any of the above technical solutions, preferably, the first period, the second period, the third period, and the fourth period are all located in a non-contention period CFP, and the first period and the second period are located after a period in which the access point device transmits the target management frame; and the third period and the fourth period both contain a transition delay, wherein the transition delay refers to a processing time for the station device to switch from the WUR state to the PCR state.
In the technical scheme, in order to further meet the power consumption requirement of the station equipment, the first time period, the second time period, the third time period and the fourth time period of the wakeup clock are all arranged in a non-contention period CFP, the station equipment can complete the receiving of the multicast cache data frame and the unicast cache data frame in the non-contention period without competing channel resources in a contention period CP, so that the time point of receiving the multicast cache data frame and the unicast cache data frame by the station equipment supporting the WUR function is earlier than that of the station equipment not supporting the WUR function, the power consumption requirement of the station equipment supporting the WUR function is met, and the equipment is more power-saving. In order to enable the station device to successfully receive the multicast cache data frame and the unicast cache data frame in the first time period and the second time period of the wakeup clock, the station device needs to receive a target management frame broadcasted by the access point device before the first time period and the second time period of the wakeup clock; furthermore, considering that the station device needs to switch from the WUR state to the PCR state according to the corresponding wake-up message frame before receiving the corresponding data frame, in order to ensure that the station device can sufficiently receive the multicast buffered data frame and the unicast buffered data frame in the first period and the second period, the third period and the fourth period should respectively include a switching delay to allow the station device to have enough processing time to switch from the WUR state to the PCR state.
Further, if the station device that receives the multicast wakeup message frame and the unicast wakeup message frame does not receive the target management frame, the station device may sleep before the access point device broadcasts the target management frame or may switch from the WUR state to the PCR state before the access point device broadcasts the target management frame at a certain time point.
Furthermore, the station device receiving the multicast wakeup frame and the unicast wakeup message frame may receive the corresponding downlink data frame in a manner of receiving the CF-Poll power saving polling frame sent by the access point device in the first time period and the second time period, respectively, or obtain the corresponding downlink data frame in a form of sending the PS-Poll power saving polling frame.
In any of the above technical solutions, preferably, the communication method of the wireless local area network further includes: after receiving the multicast wakeup message frame, analyzing and acquiring a level identification bit contained in the multicast wakeup message frame, wherein the level identification bit is used for indicating the receiving time sequence of each site device for receiving the multicast cache data frame; and receiving the multicast cache data frames according to the receiving time sequence, wherein the receiving time sequence corresponds to the service level of the multicast cache data frames.
In this technical solution, in order to ensure the efficiency of the station device receiving the multicast cached data frame, the station device may receive the downlink data frame cached by the access point device according to the receiving time sequence indicated by the level identifier included in the multicast wakeup message frame, so that the data frame with a higher service level is preferentially received by the corresponding station device.
According to the fifth aspect of the present invention, there is further provided a communication apparatus of a wireless local area network, where the communication apparatus of the wireless local area network is used for a station device, and the communication apparatus of the wireless local area network includes: the processing module is used for receiving a target management frame from the access point equipment and acquiring a wakeup clock contained in the target management frame; a first receiving module, configured to receive a multicast wakeup message frame and a unicast wakeup message frame from the access point device after the station device enters a WUR state; and a second receiving module, configured to receive, after the station device is switched from the WUR state to the PCR state, a multicast cache data frame corresponding to the multicast wakeup message frame and a unicast cache data frame corresponding to the unicast wakeup message frame in a first time period and a second time period that are arranged in time sequence in the wakeup clock, respectively.
In the technical scheme, considering the time sequence when the station equipment receives different types of data frames, the station equipment can receive corresponding data frames according to an awakening clock contained in a target management frame received from the access point equipment, and specifically, after entering a WUR state, the station equipment monitors a multicast awakening message frame and a unicast awakening message frame sent by the access point equipment through a secondary communication interface in a continuous awakening state or a periodic sleeping state to awaken a main communication interface in the sleeping state and then switch from the WUR state to a PCR state, so that the awakened main communication interface further receives a multicast cache data frame corresponding to the multicast awakening message frame and a unicast cache data frame corresponding to the unicast awakening message frame respectively in a first time period and a second time period of the awakening clock which are arranged in time sequence, thus, the effective definition of a receiving mechanism of the cache data frames in the multicast communication mode and the unicast communication mode is realized, the power consumption requirements of the station equipment are met, the equipment is more power-saving, and the requirements of IEEE802.11ba are met.
Wherein the target management frame comprises: the TBTT beacon frame, that is, the TBTT beacon frame is provided with an awake clock including a first period and a second period, so as to indicate that the access point device buffers a corresponding data frame for the station device.
In the foregoing technical solution, preferably, the first receiving module is specifically configured to: receiving the multicast wakeup message frame and the unicast wakeup message frame at a third time interval and a fourth time interval of the wakeup clock respectively; wherein the third time period is arranged before the first time period in time sequence, and the fourth time period is arranged after the first time period and before the second time period in time sequence.
In the technical scheme, a secondary communication interface of the station equipment monitors a multicast wakeup message frame and a unicast wakeup message frame after entering a WUR state and then performs the monitoring according to a wakeup clock, specifically, receives the multicast wakeup message frame and the unicast wakeup message frame respectively in a third time period and a fourth time period of the wakeup clock, and then the station equipment receives the multicast wakeup message frame, the multicast cache data frame, the unicast wakeup message frame and the unicast cache data frame from the access point equipment in sequence according to a time sequence in the wakeup clock.
In any of the above technical solutions, preferably, the first period, the second period, the third period, and the fourth period are all located in a non-contention period CFP, and the first period and the second period are located after a period in which the access point device transmits the target management frame; and the third period and the fourth period both contain a transition delay, wherein the transition delay refers to a processing time for the station device to switch from the WUR state to the PCR state.
In the technical scheme, in order to further meet the power consumption requirement of the station equipment, the first time period, the second time period, the third time period and the fourth time period of the wakeup clock are all arranged in a non-contention period CFP, the station equipment can complete the receiving of the multicast cache data frame and the unicast cache data frame in the non-contention period without competing channel resources in a contention period CP, so that the time point of receiving the multicast cache data frame and the unicast cache data frame by the station equipment supporting the WUR function is earlier than that of the station equipment not supporting the WUR function, the power consumption requirement of the station equipment supporting the WUR function is met, and the equipment is more power-saving. In order to enable the station device to successfully receive the multicast cache data frame and the unicast cache data frame in the first time period and the second time period of the wakeup clock, the station device needs to receive a target management frame broadcasted by the access point device before the first time period and the second time period of the wakeup clock; furthermore, considering that the station device needs to switch from the WUR state to the PCR state according to the corresponding wake-up message frame before receiving the corresponding data frame, in order to ensure that the station device can sufficiently receive the multicast buffered data frame and the unicast buffered data frame in the first period and the second period, the third period and the fourth period should respectively include a switching delay to allow the station device to have enough processing time to switch from the WUR state to the PCR state.
Further, if the station device that receives the multicast wakeup message frame and the unicast wakeup message frame does not receive the target management frame, the station device may sleep before the access point device broadcasts the target management frame or may switch from the WUR state to the PCR state before the access point device broadcasts the target management frame at a certain time point.
Furthermore, the station device receiving the multicast wakeup frame and the unicast wakeup message frame may receive the corresponding downlink data frame in a manner of receiving the CF-Poll power saving polling frame sent by the access point device in the first time period and the second time period, respectively, or obtain the corresponding downlink data frame in a form of sending the PS-Poll power saving polling frame.
In any of the above technical solutions, preferably, the communication apparatus of the wireless local area network further includes: the analyzing module is configured to analyze and acquire a level identifier included in the multicast wakeup message frame after the first receiving module receives the multicast wakeup message frame, where the level identifier is used to indicate a receiving time sequence of each site device that receives the multicast cache data frame; and the second receiving module is specifically configured to: and receiving the multicast cache data frames according to the receiving time sequence, wherein the receiving time sequence corresponds to the service level of the multicast cache data frames.
In this technical solution, in order to ensure the efficiency of the station device receiving the multicast cached data frame, the station device may receive the downlink data frame cached by the access point device according to the receiving time sequence indicated by the level identifier included in the multicast wakeup message frame, so that the data frame with a higher service level is preferentially received by the corresponding station device.
According to a sixth aspect of the present invention, a station device is further provided, which includes the communication apparatus of the wireless local area network in any one of the above-mentioned technical solutions of the fifth aspect, so that the station device has the same technical effects as the communication apparatus of the wireless local area network in any one of the above-mentioned technical solutions of the fifth aspect, and details thereof are omitted here.
According to the technical scheme, the receiving mechanism of the cache data frame in the multicast communication mode and the unicast communication mode is defined, so that the power consumption requirement of the station equipment can be met, the equipment is more power-saving, and the requirement of IEEE802.11ba is met.
Drawings
Fig. 1 is a flowchart illustrating a communication method for a wireless lan of an access point device according to an embodiment of the present invention;
fig. 2 shows a schematic block diagram of a communication apparatus of a wireless local area network for an access point device according to an embodiment of the present invention;
fig. 3 shows a schematic block diagram of an access point device of an embodiment of the invention;
fig. 4 is a flowchart illustrating a communication method for a wireless local area network of a station device according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating a receive state within a wakeup clock according to an embodiment of the invention;
fig. 6 shows a schematic block diagram of a communication apparatus of a wireless local area network for a station device of an embodiment of the present invention;
fig. 7 shows a schematic block diagram of a station apparatus of an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Fig. 1 is a flowchart illustrating a communication method for a wireless local area network of an access point device according to an embodiment of the present invention.
As shown in fig. 1, the communication method for the wireless local area network of the access point device according to the embodiment of the present invention specifically includes the following steps:
step 102, generating a target management frame, and sending the target management frame to the station equipment, wherein a wakeup clock is set in the target management frame.
And 104, generating a multicast wake-up message frame.
Step 106, generating a unicast wake-up message frame.
Step 108, the multicast wakeup message frame and the unicast wakeup message frame are respectively sent to the site device, so that after the site device is switched from the WUR state to the PCR state, the multicast cache data frame corresponding to the multicast wakeup message frame and the unicast cache data frame corresponding to the unicast wakeup message frame are respectively received at a first time period and a second time period arranged in time sequence in the wakeup clock.
The execution sequence of step 104 and step 106 is not sequential.
In this embodiment, considering a chronological order when the station device receives different types of data frames, the access point device may cause the station device to receive different types of data frames according to an order indicated by a wakeup clock by sending a target management frame including the wakeup clock to the station device in advance, further cause a secondary communication interface of the station device in a WUR state, which is in a continuously awake state or a periodically sleep state, to listen to a multicast wakeup message frame and a unicast wakeup message frame generated and sent by the access point device, so as to wake up a main communication interface of the station device in the sleep state, which is in the WUR state, to cause the station device to enter a PCR state, and then the main communication interface further receives a multicast cache data frame corresponding to the multicast wakeup message frame and a unicast cache data frame corresponding to the unicast wakeup message frame respectively in a first time period and a second time period arranged in chronological order of the wakeup clock, therefore, the effective definition of the receiving mechanism of the cache data frame in the multicast communication mode and the unicast communication mode is realized, the power consumption requirement of the station equipment is met, the equipment is more power-saving, and the requirement of IEEE802.11ba is met.
Wherein the target management frame comprises: the TBTT beacon frame, that is, the TBTT beacon frame is provided with an awake clock including a first period and a second period, so as to indicate that the access point device buffers a corresponding data frame for the station device.
Further, based on the above embodiment, the step 108 specifically includes: respectively sending the multicast wakeup message frame and the unicast wakeup message frame in a third time interval and a fourth time interval of the wakeup clock; wherein the third time period is arranged before the first time period in time sequence, and the fourth time period is arranged after the first time period and before the second time period in time sequence.
In this embodiment, the access point device sends the multicast wakeup message frame and the unicast wakeup message frame to the station device according to the wakeup clock, and specifically sends the multicast wakeup message frame and the unicast wakeup message frame in the third time period and the fourth time period of the wakeup clock, so that the access point device sends the multicast wakeup message frame, the multicast cache data frame, the unicast wakeup message frame, and the unicast cache data frame to the station device in sequence according to the time sequence in the wakeup clock.
Further, based on the above embodiment, the first period, the second period, the third period, and the fourth period are all located within a non-contention period CFP, and the first period and the second period are located after a period in which the access point device transmits the target management frame; and the third period and the fourth period both contain a transition delay, wherein the transition delay refers to a processing time for the station device to switch from the WUR state to the PCR state.
In this embodiment, in order to further meet the power consumption requirement of the station device, the first time period, the second time period, the third time period, and the fourth time period of the wakeup clock are all set to be located in the non-contention period CFP, so that the station device can complete the reception of the multicast cache data frame and the unicast cache data frame in the non-contention period without competing for channel resources in the contention period CP, and thus the time point when the station device supporting the WUR function receives the multicast cache data frame and the unicast cache data frame is earlier than the station device not supporting the WUR function, so that the power consumption requirement of the station device supporting the WUR function is met, and the device is more power-saving. In order to enable the station equipment to successfully receive the multicast cache data frame and the unicast cache data frame respectively in the first time interval and the second time interval of the wakeup clock, the target management frame needs to be broadcast before the first time interval and the second time interval of the wakeup clock; furthermore, considering that the station device needs to switch from the WUR state to the PCR state according to the corresponding wake-up message frame before receiving the corresponding data frame, in order to ensure that the station device can sufficiently receive the multicast buffered data frame and the unicast buffered data frame in the first period and the second period, the third period and the fourth period should respectively include a switching delay to allow the station device to have enough processing time to switch from the WUR state to the PCR state.
Further, if the station device that receives the multicast wakeup message frame and the unicast wakeup message frame does not receive the target management frame, the station device may sleep before the access point device broadcasts the target management frame or may switch from the WUR state to the PCR state before the access point device broadcasts the target management frame at a certain time point.
Furthermore, the station device receiving the multicast wakeup frame and the unicast wakeup message frame may receive the corresponding downlink data frame in a manner of receiving a cf (content F re) -Poll power saving polling frame sent by the access point device in the first period and the second period, respectively, or obtain the corresponding downlink data frame in a manner of sending a ps (power saving) -Poll power saving polling frame.
In addition, in other embodiments of the present invention, the target management frame may also be a response message frame, where the response message frame corresponds to a request message frame sent by the station device for negotiating with the access point device to enter the WUR state, that is, when the access point device feeds back the response message frame to the station device, it is determined that the station device may enter the WUR state, and the station device is instructed to correspondingly receive the multicast cache data frame and the unicast cache data frame in the first period and the second period of the wakeup clock, respectively; at this time, the access point device needs to broadcast the target management frame before the third and fourth periods.
Further, based on the above embodiment, the step 104 specifically includes: and configuring a level identification bit contained in the multicast wakeup message frame, wherein the level identification bit is used for indicating a receiving time sequence of each site device for receiving the multicast cache data frame, and the receiving time sequence corresponds to the service level of the multicast cache data frame.
In this embodiment, in order to ensure efficiency of receiving a corresponding buffered data frame by each station device corresponding to a multicast buffered data frame, when an access point device generates a multicast wakeup message frame for waking up a main communication interface of each station device, a level identifier corresponding to a service level of the multicast buffered data frame may be set in the multicast wakeup message frame, so that each station device receives a downlink data frame buffered by the access point device according to a receiving time sequence indicated by the level identifier, and when a data frame with a higher service level is preferentially received by the corresponding station device, other station devices may sleep, specifically, may sleep according to an experience value such as a shortest time length of the data frame.
The main implementation of the communication method shown in fig. 1 is an access point device in a network formed by an access point device and a station device, 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 for an access point device according to an embodiment of the present invention.
As shown in fig. 2, a communication apparatus 20 of a wireless local area network according to an embodiment of the present invention is used for an access point device, and the communication apparatus 20 of the wireless local area network includes: a processing module 202, a first generating module 204, a second generating module 206, and a transmitting module 208.
The processing module 202 is configured to generate a target management frame, and send the target management frame to the station device, where the target management frame is provided with a wakeup clock; the first generating module 204 is configured to generate a multicast wakeup message frame; the second generating module 206 is configured to generate a unicast wake-up message frame; the sending module 208 is configured to send the multicast wakeup message frame and the unicast wakeup message frame to the site device, so that after the site device is switched from the WUR state to the PCR state, the multicast cache data frame corresponding to the multicast wakeup message frame and the unicast cache data frame corresponding to the unicast wakeup message frame are received in a first time period and a second time period that are arranged in time sequence in the wakeup clock, respectively.
In this embodiment, considering a chronological order when the station device receives different types of data frames, the access point device may cause the station device to receive different types of data frames according to an order indicated by a wakeup clock by sending a target management frame including the wakeup clock to the station device in advance, further cause a secondary communication interface of the station device in a WUR state, which is in a continuously awake state or a periodically sleep state, to listen to a multicast wakeup message frame and a unicast wakeup message frame generated and sent by the access point device, so as to wake up a main communication interface of the station device in the sleep state, which is in the WUR state, to cause the station device to enter a PCR state, and then the main communication interface further receives a multicast cache data frame corresponding to the multicast wakeup message frame and a unicast cache data frame corresponding to the unicast wakeup message frame respectively in a first time period and a second time period arranged in chronological order of the wakeup clock, therefore, the effective definition of the receiving mechanism of the cache data frame in the multicast communication mode and the unicast communication mode is realized, the power consumption requirement of the station equipment is met, the equipment is more power-saving, and the requirement of IEEE802.11ba is met.
Wherein the target management frame comprises: the TBTT beacon frame, that is, the TBTT beacon frame is provided with an awake clock including a first period and a second period, so as to indicate that the access point device buffers a corresponding data frame for the station device.
Further, based on the above embodiment, the sending module 208 is specifically configured to: respectively sending the multicast wakeup message frame and the unicast wakeup message frame in a third time interval and a fourth time interval of the wakeup clock; wherein the third time period is arranged before the first time period in time sequence, and the fourth time period is arranged after the first time period and before the second time period in time sequence.
In this embodiment, the access point device sends the multicast wakeup message frame and the unicast wakeup message frame to the station device according to the wakeup clock, and specifically sends the multicast wakeup message frame and the unicast wakeup message frame in the third time period and the fourth time period of the wakeup clock, so that the access point device sends the multicast wakeup message frame, the multicast cache data frame, the unicast wakeup message frame, and the unicast cache data frame to the station device in sequence according to the time sequence in the wakeup clock.
Further, based on the above embodiment, the first period, the second period, the third period, and the fourth period are all located within a non-contention period CFP, and the first period and the second period are located after a period in which the access point device transmits the target management frame; and the third period and the fourth period both contain a transition delay, wherein the transition delay refers to a processing time for the station device to switch from the WUR state to the PCR state.
In this embodiment, in order to further meet the power consumption requirement of the station device, the first time period, the second time period, the third time period, and the fourth time period of the wakeup clock are all set to be located in the non-contention period CFP, so that the station device can complete the reception of the multicast cache data frame and the unicast cache data frame in the non-contention period without competing for channel resources in the contention period CP, and thus the time point when the station device supporting the WUR function receives the multicast cache data frame and the unicast cache data frame is earlier than the station device not supporting the WUR function, so that the power consumption requirement of the station device supporting the WUR function is met, and the device is more power-saving. In order to enable the station equipment to successfully receive the multicast cache data frame and the unicast cache data frame respectively in the first time interval and the second time interval of the wakeup clock, the target management frame needs to be broadcast before the first time interval and the second time interval of the wakeup clock; furthermore, considering that the station device needs to switch from the WUR state to the PCR state according to the corresponding wake-up message frame before receiving the corresponding data frame, in order to ensure that the station device can sufficiently receive the multicast buffered data frame and the unicast buffered data frame in the first period and the second period, the third period and the fourth period should respectively include a switching delay to allow the station device to have enough processing time to switch from the WUR state to the PCR state.
Further, if the station device that receives the multicast wakeup message frame and the unicast wakeup message frame does not receive the target management frame, the station device may sleep before the access point device broadcasts the target management frame or may switch from the WUR state to the PCR state before the access point device broadcasts the target management frame at a certain time point.
Furthermore, the station device receiving the multicast wakeup frame and the unicast wakeup message frame may receive the corresponding downlink data frame in a manner of receiving the CF-Poll power saving polling frame sent by the access point device in the first time period and the second time period, respectively, or obtain the corresponding downlink data frame in a form of sending the PS-Poll power saving polling frame.
In addition, in other embodiments of the present invention, the target management frame may also be a response message frame, where the response message frame corresponds to a request message frame sent by the station device for negotiating with the access point device to enter the WUR state, that is, when the access point device feeds back the response message frame to the station device, it is determined that the station device may enter the WUR state, and the station device is instructed to correspondingly receive the multicast cache data frame and the unicast cache data frame in the first period and the second period of the wakeup clock, respectively; at this time, the access point device needs to broadcast the target management frame before the third and fourth periods.
Further, based on the above embodiment, the first generating module 204 is specifically configured to: and configuring a level identification bit contained in the multicast wakeup message frame, wherein the level identification bit is used for indicating a receiving time sequence of each site device for receiving the multicast cache data frame, and the receiving time sequence corresponds to the service level of the multicast cache data frame.
In this embodiment, in order to ensure efficiency of receiving a corresponding buffered data frame by each station device corresponding to a multicast buffered data frame, when an access point device generates a multicast wakeup message frame for waking up a main communication interface of each station device, a level identifier corresponding to a service level of the multicast buffered data frame may be set in the multicast wakeup message frame, so that each station device receives a downlink data frame buffered by the access point device according to a receiving time sequence indicated by the level identifier, and when a data frame with a higher service level is preferentially received by the corresponding station device, other station devices may sleep, specifically, may sleep according to an experience value such as a shortest time length of the data frame.
In a specific implementation, the processing module 202, the first generating module 204, and the second generating module 206 may be a central processor or a baseband processor; the sending module 208 may be a transmitter or an antenna, etc.
Fig. 3 shows a schematic block diagram of an access point device of an embodiment of the invention.
As shown in fig. 3, the access point device 30 according to the embodiment of the present invention includes the communication apparatus 20 of the wireless lan described in the above embodiment, and therefore, the access point device 30 has the same technical effect as the communication apparatus 20 of the wireless lan described in the above embodiment, and is not described again here.
A communication method of a wireless local area network for a station device according to an embodiment of the present invention is described in detail below with reference to fig. 4 and 5.
As shown in fig. 4, the communication method for the wireless local area network of the station device according to the embodiment of the present invention specifically includes the following steps:
step 402, receiving a target management frame from an access point device, and acquiring an awake clock included in the target management frame.
Step 404, after the station device enters the WUR state, receiving a multicast wakeup message frame and a unicast wakeup message frame from the access point device.
Step 406, after the station device is switched from the WUR state to the PCR state, receiving the multicast cache data frame corresponding to the multicast wakeup message frame and the unicast cache data frame corresponding to the unicast wakeup message frame respectively at the first time period and the second time period arranged in time sequence in the wakeup clock.
In this embodiment, considering that the station device receives different types of data frames in a sequential order, the station device may receive corresponding data frames according to an awake clock included in a target management frame received from the access point device, and specifically, after entering the WUR state, the station device monitors a multicast wakeup message frame and a unicast wakeup message frame sent by the access point device through a secondary communication interface in a continuous awake state or a periodic sleep state, so as to wake up a main communication interface in the sleep state and then switch from the WUR state to a PCR state, so that the woken main communication interface further receives a multicast cache data frame corresponding to the awake multicast message frame and a unicast cache data frame corresponding to the unicast wakeup message frame respectively at a first time period and a second time period of the awake clock in a sequential order, thereby implementing effective definition of a receiving mechanism for caching data frames in a multicast communication mode and a unicast communication mode, the power consumption requirements of the station equipment are met, the equipment is more power-saving, and the requirements of IEEE802.11ba are met.
Wherein the target management frame comprises: the TBTT beacon frame, that is, the TBTT beacon frame is provided with an awake clock including a first period and a second period, so as to indicate that the access point device buffers a corresponding data frame for the station device.
Further, based on the above embodiment, the step 404 specifically includes: receiving the multicast wakeup message frame and the unicast wakeup message frame at a third time interval and a fourth time interval of the wakeup clock respectively; wherein the third time period is arranged before the first time period in time sequence, and the fourth time period is arranged after the first time period and before the second time period in time sequence.
In this embodiment, the secondary communication interface of the station device also performs according to the wakeup clock when monitoring the multicast wakeup message frame and the unicast wakeup message frame after entering the WUR state, and specifically receives the multicast wakeup message frame and the unicast wakeup message frame respectively in the third time period and the fourth time period in the wakeup clock, so that the station device sequentially receives the multicast wakeup message frame, the multicast cache data frame, the unicast wakeup message frame, and the unicast cache data frame from the access point device in the wakeup clock according to the time sequence, as shown in fig. 5.
Further, based on the above embodiment, the first period, the second period, the third period, and the fourth period are all located within a non-contention period CFP, and the first period and the second period are located after a period in which the access point device transmits the target management frame; and the third period and the fourth period both contain a transition delay, wherein the transition delay refers to a processing time for the station device to switch from the WUR state to the PCR state.
In this embodiment, in order to further meet the power consumption requirement of the station device, the first time period, the second time period, the third time period, and the fourth time period of the wakeup clock are all set to be located in the non-contention period CFP, so that the station device can complete the reception of the multicast cache data frame and the unicast cache data frame in the non-contention period without competing for channel resources in the contention period CP, and thus the time point when the station device supporting the WUR function receives the multicast cache data frame and the unicast cache data frame is earlier than the station device not supporting the WUR function, so that the power consumption requirement of the station device supporting the WUR function is met, and the device is more power-saving. In order to enable the station device to successfully receive the multicast cache data frame and the unicast cache data frame in the first period and the second period of the wakeup clock, respectively, the station device needs to receive a target management frame broadcast by the access point device before the first period and the second period of the wakeup clock, as shown in fig. 5, the target management frame is a TBTT beacon frame, where P1, P2, P3, and P4 correspond to the third period, the first period, the fourth period, and the second period of the wakeup clock, respectively; furthermore, considering that the station device needs to switch from the WUR state to the PCR state according to the corresponding wake-up message frame before receiving the corresponding data frame, in order to ensure that the station device can sufficiently receive the multicast buffered data frame and the unicast buffered data frame in the first period and the second period, the third period and the fourth period should respectively include a switching delay to allow the station device to have enough processing time to switch from the WUR state to the PCR state.
Further, if the station device that receives the multicast wakeup message frame and the unicast wakeup message frame does not receive the target management frame, the station device may sleep before the access point device broadcasts the target management frame or may switch from the WUR state to the PCR state before the access point device broadcasts the target management frame at a certain time point.
Furthermore, the station device receiving the multicast wakeup frame and the unicast wakeup message frame may receive the corresponding downlink data frame in a manner of receiving the CF-Poll power saving polling frame sent by the access point device in the first time period and the second time period, respectively, or obtain the corresponding downlink data frame in a form of sending the PS-Poll power saving polling frame.
In addition, in other embodiments of the present invention, the target management frame may also be a response message frame, where the response message frame corresponds to a request message frame sent by the station device for negotiating with the access point device to enter the WUR state, that is, when the station device receives the response message frame fed back by the access point device, it is determined that the station device can enter the WUR state, and it is determined that the first time period and the second time period in the wakeup clock respectively correspond to receiving the multicast cache data frame and the unicast cache data frame; at this time, the station device needs to receive the target management frame before the third period and the fourth period.
Further, based on the above embodiment, the communication method of the wireless local area network further includes: after receiving the multicast wakeup message frame, analyzing and acquiring a level identification bit contained in the multicast wakeup message frame, wherein the level identification bit is used for indicating the receiving time sequence of each site device for receiving the multicast cache data frame; and receiving the multicast cache data frames according to the receiving time sequence, wherein the receiving time sequence corresponds to the service level of the multicast cache data frames.
In this embodiment, in order to ensure the efficiency of the station device receiving the multicast cached data frames, the station device may receive the downlink data frames cached by the access point device according to the receiving time sequence indicated by the level identifier included in the multicast wakeup message frame, so that the data frames with higher service levels are preferentially received by the corresponding station device.
The main body of the communication method shown in fig. 4 may be a station device in a network formed by an ap device and a station device, such as a smart phone or a PDA (Personal Digital Assistant).
In particular, the primary and secondary communication interfaces may be antennas, which may be physically or logically separated.
Fig. 6 shows a schematic block diagram of a communication apparatus of a wireless local area network for a station device according to an embodiment of the present invention.
As shown in fig. 6, a communication apparatus 60 of a wireless local area network according to an embodiment of the present invention is used for a station device, and the communication apparatus 60 of the wireless local area network includes: a processing module 602, a first receiving module 604, and a second receiving module 606.
The processing module 602 is configured to receive a target management frame from an access point device, and acquire an awake clock included in the target management frame; the first receiving module 604 is configured to receive a multicast wakeup message frame and a unicast wakeup message frame from the access point device after the station device enters the WUR state; the second receiving module 606 is configured to receive, after the station device is switched from the WUR state to the PCR state, a multicast cache data frame corresponding to the multicast wakeup message frame and a unicast cache data frame corresponding to the unicast wakeup message frame in a first time period and a second time period that are arranged in time sequence in the wakeup clock, respectively.
In this embodiment, considering that the station device receives different types of data frames in a sequential order, the station device may receive corresponding data frames according to an awake clock included in a target management frame received from the access point device, and specifically, after entering the WUR state, the station device monitors a multicast wakeup message frame and a unicast wakeup message frame sent by the access point device through a secondary communication interface in a continuous awake state or a periodic sleep state, so as to wake up a main communication interface in the sleep state and then switch from the WUR state to a PCR state, so that the woken main communication interface further receives a multicast cache data frame corresponding to the awake multicast message frame and a unicast cache data frame corresponding to the unicast wakeup message frame respectively at a first time period and a second time period of the awake clock in a sequential order, thereby implementing effective definition of a receiving mechanism for caching data frames in a multicast communication mode and a unicast communication mode, the power consumption requirements of the station equipment are met, the equipment is more power-saving, and the requirements of IEEE802.11ba are met.
Wherein the target management frame comprises: the TBTT beacon frame, that is, the TBTT beacon frame is provided with an awake clock including a first period and a second period, so as to indicate that the access point device buffers a corresponding data frame for the station device.
Further, based on the above embodiment, the first receiving module 604 is specifically configured to: receiving the multicast wakeup message frame and the unicast wakeup message frame at a third time interval and a fourth time interval of the wakeup clock respectively; wherein the third time period is arranged before the first time period in time sequence, and the fourth time period is arranged after the first time period and before the second time period in time sequence.
In this embodiment, the secondary communication interface of the station device also performs monitoring on the multicast wakeup message frame and the unicast wakeup message frame according to the wakeup clock after entering the WUR state, and specifically receives the multicast wakeup message frame and the unicast wakeup message frame respectively in the third time period and the fourth time period of the wakeup clock, so that the station device sequentially receives the multicast wakeup message frame, the multicast cache data frame, the unicast wakeup message frame, and the unicast cache data frame from the access point device in the wakeup clock according to the time sequence.
Further, based on the above embodiment, the first period, the second period, the third period, and the fourth period are all located within a non-contention period CFP, and the first period and the second period are located after a period in which the access point device transmits the target management frame; and the third period and the fourth period both contain a transition delay, wherein the transition delay refers to a processing time for the station device to switch from the WUR state to the PCR state.
In this embodiment, in order to further meet the power consumption requirement of the station device, the first time period, the second time period, the third time period, and the fourth time period of the wakeup clock are all set to be located in the non-contention period CFP, so that the station device can complete the reception of the multicast cache data frame and the unicast cache data frame in the non-contention period without competing for channel resources in the contention period CP, and thus the time point when the station device supporting the WUR function receives the multicast cache data frame and the unicast cache data frame is earlier than the station device not supporting the WUR function, so that the power consumption requirement of the station device supporting the WUR function is met, and the device is more power-saving. In order to enable the station device to successfully receive the multicast cache data frame and the unicast cache data frame in the first time period and the second time period of the wakeup clock, respectively, the station device needs to receive the target management frame broadcasted by the access point device before the first time period and the second time period of the wakeup clock, as shown in fig. 5; furthermore, considering that the station device needs to switch from the WUR state to the PCR state according to the corresponding wake-up message frame before receiving the corresponding data frame, in order to ensure that the station device can sufficiently receive the multicast buffered data frame and the unicast buffered data frame in the first period and the second period, the third period and the fourth period should respectively include a switching delay to allow the station device to have enough processing time to switch from the WUR state to the PCR state.
Further, if the station device that receives the multicast wakeup message frame and the unicast wakeup message frame does not receive the target management frame, the station device may sleep before the access point device broadcasts the target management frame or may switch from the WUR state to the PCR state before the access point device broadcasts the target management frame at a certain time point.
Furthermore, the station device receiving the multicast wakeup frame and the unicast wakeup message frame may receive the corresponding downlink data frame in a manner of receiving the CF-Poll power saving polling frame sent by the access point device in the first time period and the second time period, respectively, or obtain the corresponding downlink data frame in a form of sending the PS-Poll power saving polling frame.
In addition, in other embodiments of the present invention, the target management frame may also be a response message frame, where the response message frame corresponds to a request message frame sent by the station device for negotiating with the access point device to enter the WUR state, that is, when the station device receives the response message frame fed back by the access point device, it is determined that the station device can enter the WUR state, and it is determined that the first time period and the second time period in the wakeup clock respectively correspond to receiving the multicast cache data frame and the unicast cache data frame; at this time, the station device needs to receive the target management frame before the third period and the fourth period.
Further, based on the above embodiment, the communication device 60 of the wireless local area network further includes: a parsing module 608, configured to parse and obtain a level identifier included in the multicast wakeup message frame after the first receiving module 604 receives the multicast wakeup message frame, where the level identifier is used to indicate a receiving time sequence of each site device that receives the multicast cache data frame; and the second receiving module 606 is specifically configured to: and receiving the multicast cache data frames according to the receiving time sequence, wherein the receiving time sequence corresponds to the service level of the multicast cache data frames.
In this embodiment, in order to ensure the efficiency of the station device receiving the multicast cached data frames, the station device may receive the downlink data frames cached by the access point device according to the receiving time sequence indicated by the level identifier included in the multicast wakeup message frame, so that the data frames with higher service levels are preferentially received by the corresponding station device.
In a specific implementation, the first receiving module 604 and the second receiving module 606 may be receivers or antennas, etc.; the processing module 602 and the parsing module 608 may be a central processor or a baseband processor, etc.
Fig. 7 shows a schematic block diagram of a station apparatus of an embodiment of the present invention.
As shown in fig. 7, the station device 70 according to the embodiment of the present invention includes the communication apparatus 60 of the wireless local area network described in the foregoing embodiment, and therefore, the station device 70 has the same technical effect as the communication apparatus 60 of the wireless local area network described in the foregoing embodiment, and is not described again here.
The technical scheme of the present invention is described in detail with reference to the drawings, and by defining the receiving mechanism of the buffered data frames in the multicast communication mode and the unicast communication mode, the technical scheme can meet the power consumption requirement of the station equipment, so that the equipment is more power-saving, and meets the requirement of ieee802.11ba.
In the description of the present specification, the terms "first", "second", "third", and "fourth" 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 (18)

1. A communication method of a wireless local area network, for an access point device, the communication method of the wireless local area network comprising:
generating a target management frame and sending the target management frame to site equipment, wherein a wakeup clock is arranged in the target management frame;
generating a multicast wakeup message frame;
generating a unicast wake-up message frame;
respectively sending the multicast wakeup message frame and the unicast wakeup message frame to the site equipment so as to respectively receive the multicast cache data frame corresponding to the multicast wakeup message frame and the unicast cache data frame corresponding to the unicast wakeup message frame in a first time period and a second time period which are arranged in time sequence in the wakeup clock after the site equipment is switched from a WUR state to a PCR state;
the first time period and the second time period are both located in a non-contention period CFP, and the first time period and the second time period are located after a time period in which the access point device transmits the target management frame.
2. The communication method according to claim 1, wherein the sending the multicast wakeup message frame and the unicast wakeup message frame to the station device respectively comprises:
respectively sending the multicast wakeup message frame and the unicast wakeup message frame in a third time interval and a fourth time interval of the wakeup clock;
wherein the third time period is arranged before the first time period in time sequence, and the fourth time period is arranged after the first time period and before the second time period in time sequence.
3. The communication method according to claim 2,
the third time period and the fourth time period are both within a non-contention period CFP, an
The third period and the fourth period both include a transition delay, where the transition delay refers to a processing time for the station device to switch from the WUR state to the PCR state.
4. The communication method according to any one of claims 1 to 3, wherein the generating the multicast wakeup message frame comprises:
configuring the multicast wake-up message frame to contain a grade identification bit,
the level identification bit is used for indicating a receiving time sequence of each site device for receiving the multicast cache data frame, and the receiving time sequence corresponds to the service level of the multicast cache data frame.
5. A communication method of a wireless local area network, for a station device, the communication method of the wireless local area network comprising:
receiving a target management frame from access point equipment, and acquiring an awakening clock contained in the target management frame;
after the station equipment enters a WUR state, receiving a multicast awakening message frame and a unicast awakening message frame from the access point equipment;
after the station equipment is switched from a WUR state to a PCR state, respectively receiving a multicast cache data frame corresponding to the multicast wakeup message frame and a unicast cache data frame corresponding to the unicast wakeup message frame at a first time interval and a second time interval which are arranged in time sequence in the wakeup clock;
the first time period and the second time period are both located in a non-contention period CFP, and the first time period and the second time period are located after a time period in which the access point device transmits the target management frame.
6. The communication method according to claim 5, wherein the receiving the multicast wake-up message frame and the unicast wake-up message frame from the access point device comprises:
receiving the multicast wakeup message frame and the unicast wakeup message frame at a third time interval and a fourth time interval of the wakeup clock respectively;
wherein the third time period is arranged before the first time period in time sequence, and the fourth time period is arranged after the first time period and before the second time period in time sequence.
7. The communication method according to claim 6, wherein the third period and the fourth period are both within a non-contention period CFP, and wherein the third period and the fourth period each contain a transition delay, wherein the transition delay refers to a processing time for the station device to switch from a WUR state to a PCR state.
8. The communication method according to any one of claims 5 to 7, further comprising:
after receiving the multicast wakeup message frame, analyzing and acquiring a level identification bit contained in the multicast wakeup message frame, wherein the level identification bit is used for indicating the receiving time sequence of each site device for receiving the multicast cache data frame;
and receiving the multicast cache data frames according to the receiving time sequence, wherein the receiving time sequence corresponds to the service level of the multicast cache data frames.
9. A communication apparatus of a wireless local area network, for an access point device, the communication apparatus of the wireless local area network comprising:
the system comprises a processing module, a station equipment and a target management module, wherein the processing module is used for generating a target management frame and sending the target management frame to the station equipment, and a wakeup clock is arranged in the target management frame;
the first generation module is used for generating a multicast wakeup message frame;
a second generating module, configured to generate a unicast wake-up message frame;
a sending module, configured to send the multicast wakeup message frame and the unicast wakeup message frame to the site device, so that after the site device switches from a WUR state to a PCR state, the multicast cache data frame corresponding to the multicast wakeup message frame and the unicast cache data frame corresponding to the unicast wakeup message frame are received at a first time period and a second time period, which are arranged in a time sequence, in the wakeup clock, respectively;
the first time period and the second time period are both located in a non-contention period CFP, and the first time period and the second time period are located after a time period in which the access point device transmits the target management frame.
10. The communications apparatus as claimed in claim 9, wherein the sending module is specifically configured to:
respectively sending the multicast wakeup message frame and the unicast wakeup message frame in a third time interval and a fourth time interval of the wakeup clock;
wherein the third time period is arranged before the first time period in time sequence, and the fourth time period is arranged after the first time period and before the second time period in time sequence.
11. The communication device of claim 10,
the third time period and the fourth time period are both within a non-contention period CFP, an
The third period and the fourth period both include a transition delay, where the transition delay refers to a processing time for the station device to switch from the WUR state to the PCR state.
12. The communication device according to any of claims 9 to 11, wherein the first generating means is specifically configured to:
configuring the multicast wake-up message frame to contain a grade identification bit,
the level identification bit is used for indicating a receiving time sequence of each site device for receiving the multicast cache data frame, and the receiving time sequence corresponds to the service level of the multicast cache data frame.
13. A communication apparatus of a wireless local area network, for a station device, the communication apparatus of the wireless local area network comprising:
the processing module is used for receiving a target management frame from the access point equipment and acquiring a wakeup clock contained in the target management frame;
a first receiving module, configured to receive a multicast wakeup message frame and a unicast wakeup message frame from the access point device after the station device enters a WUR state;
a second receiving module, configured to receive, after the station device is switched from the WUR state to the PCR state, a multicast cache data frame corresponding to the multicast wakeup message frame and a unicast cache data frame corresponding to the unicast wakeup message frame at a first time period and a second time period that are arranged in time sequence in the wakeup clock, respectively;
the first time period and the second time period are both located in a non-contention period CFP, and the first time period and the second time period are located after a time period in which the access point device transmits the target management frame.
14. The communications apparatus as claimed in claim 13, wherein the first receiving module is specifically configured to:
receiving the multicast wakeup message frame and the unicast wakeup message frame at a third time interval and a fourth time interval of the wakeup clock respectively;
wherein the third time period is arranged before the first time period in time sequence, and the fourth time period is arranged after the first time period and before the second time period in time sequence.
15. The communication device of claim 14,
the third time period and the fourth time period are both within a non-contention period CFP, an
The third period and the fourth period both include a transition delay, where the transition delay refers to a processing time for the station device to switch from the WUR state to the PCR state.
16. The communication device according to any one of claims 13 to 15, further comprising:
the analyzing module is configured to analyze and acquire a level identifier included in the multicast wakeup message frame after the first receiving module receives the multicast wakeup message frame, where the level identifier is used to indicate a receiving time sequence of each site device that receives the multicast cache data frame; and
the second receiving module is specifically configured to: and receiving the multicast cache data frames according to the receiving time sequence, wherein the receiving time sequence corresponds to the service level of the multicast cache data frames.
17. An access point device, comprising: communication device of a wireless local area network according to any of claims 9 to 12.
18. A station apparatus, comprising: communication device of a wireless local area network according to any of claims 13 to 16.
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