CN109121191B - Communication method and device of wireless local area network, access point equipment and site equipment - Google Patents
Communication method and device of wireless local area network, access point equipment and site equipment Download PDFInfo
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- CN109121191B CN109121191B CN201710497414.3A CN201710497414A CN109121191B CN 109121191 B CN109121191 B CN 109121191B CN 201710497414 A CN201710497414 A CN 201710497414A CN 109121191 B CN109121191 B CN 109121191B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- 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
- H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a communication method and a communication device of a wireless local area network, wherein the communication method of the wireless local area network comprises the following steps: and generating and transmitting a management message frame, wherein the management message frame carries duration indication information, the duration indication information is used for indicating the cycle time of a secondary communication interface of the site equipment for receiving the wake-up message frame, and the wake-up message frame is used for waking up a primary communication interface of the site equipment. By the technical scheme, the period time of the station equipment for responding to the wakeup frame is accurately and reliably indicated, the possibility of data collision and power consumption loss are reduced, and the frequency spectrum utilization rate and the data throughput are improved.
Description
Technical Field
The present invention relates to the field of communication network 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 2016, the IEEE (Institute of Electrical and Electronic Engineers) 802.11 established the next-generation wur (wake up receiver) group of Wi-Fi (Wireless Fidelity) technologies, namely the IEEE (Institute of Electrical and Electronic Engineers) 802.11ba, which is mainly applied to the internet of things and aims to save the power consumption of the devices as much as possible.
A wake-up message (wake-up) frame is defined in the ieee802.11ba standard, and the main purpose of the wake-up message frame is to wake up a primary communication interface of a communication device, that is, the communication device receives the wake-up frame through a secondary communication interface, and the power consumption required by the wake-up message frame is not more than 1mw, which is much less than the power consumption required by directly waking up the primary communication interface of the communication device, and is beneficial to saving the power consumption of the communication device.
Further, in order to make the communication apparatus more power-saving, it is defined that the communication interface can also enter a sleep state secondly.
However, for the station device supporting receiving the wake-up message frame, the cycle time and the frame type identification of the secondary communication interface of the station device receiving the wake-up message frame are not explicitly specified, which is not favorable for further reducing the power consumption of the station device and the access point device, and also has a hidden danger of data collision.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, an object of the present invention is to provide a communication method of a wireless local area network.
Another object of the present invention is to provide a communication apparatus for a wireless local area network.
Another object of the present invention is to provide an access point device.
Another object of the present invention is to provide a station apparatus.
In order to achieve the above object, a technical solution of a first aspect of the present invention provides a communication method for a wireless local area network, including: and generating and transmitting a management message frame, wherein the management message frame carries duration indication information, the duration indication information is used for indicating the cycle time of a secondary communication interface of the site equipment for receiving the wake-up message frame, and the wake-up message frame is used for waking up a primary communication interface of the site equipment.
In the technical scheme, the station equipment controls the secondary communication interface to wake up and receive the wake-up message frame according to the cycle time indicated by the management message frame by generating and transmitting the management message frame so as to wake up the primary communication interface of the access point equipment, and then the primary communication interface and the access point equipment enter an initial network access connection process or a data frame interaction process, so that the communication equipment further saves power consumption.
The station equipment can determine the starting time and the duration of the wake-up message frame according to the management message frame in advance, so that the secondary communication interface can also enter a sleep mode, and awakens to receive the wake-up message frame before the starting time, thereby being beneficial to reducing the power consumption of the station equipment and the access point equipment at the same time and improving the frequency spectrum utilization rate and the throughput of the basic service set.
In the foregoing technical solution, preferably, the duration indication information includes a duration field and a frame type field, and the duration field corresponds to the cycle time.
In the technical scheme, the coded duration indication information comprises a duration field and a frame type field, wherein the duration field corresponds to the cycle time, on one hand, the station device can determine that the wake-up message frame is a unicast frame (feeding back an ACK frame to confirm reception), a multicast frame or a broadcast frame according to the frame type field, and on the other hand, the station device determines the time period for the secondary communication device to receive the wake-up message frame according to the duration field to ensure that the secondary communication interface receives the wake-up message frame in time.
In the foregoing technical solution, preferably, the communication method of the wireless local area network further includes: when the frame type field is a first value, indicating the station equipment to receive the awakening message frame as a unicast message frame; and when the frame type field is a second value, indicating the site equipment to receive the wake-up message frame as a multicast message frame, and when the frame type field is a third value, indicating the site equipment to receive the wake-up message frame as a broadcast message frame, wherein any two time length fields in the time length field carried by the unicast message frame, the time length field carried by the multicast message frame and the time length field carried by the broadcast message frame are different. In the technical scheme, different values are coded for the frame type field, the station equipment is indicated to accurately determine whether the wake-up message frame is a unicast frame, a multicast frame or a broadcast frame according to the frame type field, and different types of duration fields are set, so that the occurrence of data collision can be further reduced.
For example, one encoding method for the frame type field is:
(1) if the first bit of the first byte of the frame type field is '1', the wake-up message frame is a multicast frame;
(2) the first two bits of the first byte of the frame type field are both '1', which indicates that the wake-up message frame is a broadcast frame;
(3) the first bit of the first byte of the frame type field is "0", which indicates that the wake-up message frame is a unicast frame.
Furthermore, considering that the frequency of receiving the multicast wake-up message frame and the frequency of receiving the broadcast wake-up message frame by STAs (i.e., site devices) are lower than the frequency of receiving the unicast wake-up message frame, the period duration carried by the unicast wake-up message frame is shorter than the duration in the broadcast wake-up message frame and the multicast wake-up message frame; considering that the purpose of the STAs receiving the broadcasted wake-up message frame may be for time synchronization between the communication devices, the duration in the broadcasted wake-up message frame is the longest.
In addition, if the management message frame is a unicast frame, the station device normally feeds back an ACK frame to the access point device after successfully receiving the unicast frame, and since the ACK frame itself is an acknowledgement frame, the station device does not need to be fed back for acknowledgement by the access point device.
The receiver sends an ACK frame without src to the receiving end, and the receiving end confirms that an ACK frame is received (that is, according to the standard protocol, the sending unicast frame and the ACK frame corresponding to the sending unicast frame should be regarded as an atomic inseparable whole to indicate a successful communication).
In any one of the above technical solutions, preferably, the generating and sending a management message frame specifically includes: and writing timestamp information into the management message frame, wherein the timestamp information is used for indicating the starting time of the station equipment for receiving the wake-up message frame, and the time interval between the time corresponding to the timestamp information and the starting time corresponds to a local pre-stored delay parameter of the station equipment.
In the technical scheme, by writing timestamp information in a management message frame, a station device determines a starting time for receiving a wakeup message frame according to the timestamp information and a delay parameter, for example, the management message frame is a beacon frame, and the delay parameter is 50 milliseconds, so that the station device determines that a secondary communication interface is controlled to receive the wakeup message frame after 50 milliseconds of sending the beacon frame according to the timestamp information of the management message frame, and the spectrum utilization rate is improved.
According to an embodiment of the second invention, there is further provided a communication method of a wireless local area network, including: and receiving a management message frame, wherein the management message frame carries duration indication information, the duration indication information is used for indicating the cycle time of a secondary communication interface of the site equipment for receiving the wake-up message frame, and the wake-up message frame is used for waking up a primary communication interface of the site equipment.
In the technical scheme, the management message frame is received, the management message frame carries the duration indication information, and the secondary communication interface is controlled to receive the wake-up message frame according to the cycle time indicated by the management message frame (the secondary communication interface does not enter a sleep state and always supports receiving the wake-up message frame), so that the primary communication interface of the access point device is woken up, and then the primary communication interface and the access point device enter an initial network access connection process or a data frame interaction process, so that the communication device further saves power consumption.
The station equipment can determine the starting time and the duration of the wake-up message frame according to the management message frame in advance, so that the secondary communication interface can also enter a sleep mode, and awakens to receive the wake-up message frame before the starting time, thereby being beneficial to reducing the power consumption of the station equipment and the access point equipment at the same time and improving the frequency spectrum utilization rate and the throughput of the basic service set.
In any one of the above technical solutions, preferably, the communication method of the wireless local area network further includes: parsing the management message frame to receive a duration field and a frame type field, the duration field corresponding to the cycle time; when the frame type field is detected to be a first value, determining that the awakening message frame is a unicast message frame; and when the frame type field is detected to be a second value, determining that the awakening message frame is a multicast message frame, and when the frame type field is detected to be a third value, determining that the awakening message frame is a broadcast message frame, wherein any two time length fields in the time length field carried by the unicast message frame, the time length field carried by the multicast message frame and the time length field carried by the broadcast message frame are different.
In the technical scheme, the time length field corresponding to each management message frame is determined by analyzing the numerical value of the frame type field code and accurately determining that the awakening message frame is a unicast frame, a multicast frame or a broadcast frame according to the frame type field, so that the occurrence of data collision is favorably reduced.
For example, one encoding method for the frame type field is:
(1) if the first bit of the first byte of the frame type field is '1', the wake-up message frame is a multicast frame;
(2) the first two bits of the first byte of the frame type field are both '1', which indicates that the wake-up message frame is a broadcast frame;
(3) the first bit of the first byte of the frame type field is "0", which indicates that the wake-up message frame is a unicast frame.
Furthermore, considering that the frequency of receiving the multicast wake-up message frame and the frequency of receiving the broadcast wake-up message frame by STAs (i.e., site devices) are lower than the frequency of receiving the unicast wake-up message frame, the period duration carried by the unicast wake-up message frame is shorter than the duration in the broadcast wake-up message frame and the multicast wake-up message frame; considering that the purpose of the STAs receiving the broadcasted wake-up message frame may be for time synchronization between the communication devices, the duration in the broadcasted wake-up message frame is the longest.
In addition, if the management message frame is a unicast frame, the station device normally feeds back an ACK frame to the access point device after successfully receiving the unicast frame, and since the ACK frame itself is an acknowledgement frame, the station device does not need to be fed back for acknowledgement by the access point device.
The receiver sends an ACK frame without src to the receiving end, and the receiving end confirms that an ACK frame is received (that is, according to the standard protocol, the sending unicast frame and the ACK frame corresponding to the sending unicast frame should be regarded as an atomic inseparable whole to indicate a successful communication).
In any one of the above technical solutions, preferably, the communication method of the wireless local area network further includes: parsing the management message frame to receive timestamp information; and determining the starting time of receiving the awakening message frame according to the timestamp information and the locally stored time delay parameter.
In the technical scheme, by analyzing timestamp information written in a management message frame, a station device determines a starting time for receiving a wakeup message frame according to the timestamp information and a delay parameter, for example, the management message frame is a beacon frame, and the delay parameter is 50 milliseconds, and the station device determines, according to the timestamp information of the management message frame, that a secondary communication interface is controlled to receive the wakeup message frame after 50 milliseconds of sending the beacon frame.
In any one of the above technical solutions, preferably, the management message frame is one of an awake state request reception frame, a probe response frame, an awake beacon frame, and a beacon frame.
In the technical scheme, the awake state Request receiving frame is equivalent to a WUR Request frame, the awake Beacon frame is equivalent to a WUR Beacon frame, the Beacon frame is a broadcast Beacon frame, and the Probe response frame is a Probe Request frame in an initial network access process.
According to the third aspect of the present invention, there is further provided a communication apparatus of a wireless local area network, including: and the communication unit is used for generating and transmitting a management message frame, wherein the management message frame carries duration indication information, the duration indication information is used for indicating the cycle time of receiving the wake-up message frame by the secondary communication interface of the site equipment, and the wake-up message frame is used for waking up the primary communication interface of the site equipment.
In the technical scheme, the station equipment controls the secondary communication interface to wake up and receive the wake-up message frame according to the cycle time indicated by the management message frame by generating and transmitting the management message frame so as to wake up the primary communication interface of the access point equipment, and then the primary communication interface and the access point equipment enter an initial network access connection process or a data frame interaction process, so that the communication equipment further saves power consumption.
The station equipment can determine the starting time and the duration of the wake-up message frame according to the management message frame in advance, so that the secondary communication interface can also enter a sleep mode, and awakens to receive the wake-up message frame before the starting time, thereby being beneficial to reducing the power consumption of the station equipment and the access point equipment at the same time and improving the frequency spectrum utilization rate and the throughput of the basic service set.
In any one of the above technical solutions, preferably, the duration indication information includes a duration field and a frame type field, and the duration field corresponds to the cycle time.
In the technical scheme, the coded duration indication information comprises a duration field and a frame type field, wherein the duration field corresponds to the cycle time, on one hand, the station device can determine that the wake-up message frame is a unicast frame (feeding back an ACK frame to confirm reception), a multicast frame or a broadcast frame according to the frame type field, and on the other hand, the station device determines the time period for the secondary communication device to receive the wake-up message frame according to the duration field to ensure that the secondary communication interface receives the wake-up message frame in time.
In any one of the above technical solutions, preferably, the method further includes: an indicating unit, configured to indicate, when the frame type field is a first value, the station device to receive the wake-up message frame as a unicast message frame; the indication unit is further configured to: when the frame type field is the second value, the station device is instructed to receive the wake-up message frame as a multicast message frame, and the instructing unit is further configured to: and when the frame type field is a third value, indicating the station equipment to receive the wake-up message frame as a broadcast message frame, wherein any two time length fields in the time length field carried by the unicast message frame, the time length field carried by the multicast message frame and the time length field carried by the broadcast message frame are different.
In the technical scheme, different values are coded for the frame type field, the station equipment is indicated to accurately determine whether the wake-up message frame is a unicast frame, a multicast frame or a broadcast frame according to the frame type field, and different types of duration fields are set, so that the occurrence of data collision can be further reduced.
For example, one encoding method for the frame type field is:
(1) if the first bit of the first byte of the frame type field is '1', the wake-up message frame is a multicast frame;
(2) the first two bits of the first byte of the frame type field are both '1', which indicates that the wake-up message frame is a broadcast frame;
(3) the first bit of the first byte of the frame type field is "0", which indicates that the wake-up message frame is a unicast frame.
Furthermore, considering that the frequency of receiving the multicast wake-up message frame and the frequency of receiving the broadcast wake-up message frame by STAs (i.e., site devices) are lower than the frequency of receiving the unicast wake-up message frame, the period duration carried by the unicast wake-up message frame is shorter than the duration in the broadcast wake-up message frame and the multicast wake-up message frame; considering that the purpose of the STAs receiving the broadcasted wake-up message frame may be for time synchronization between the communication devices, the duration in the broadcasted wake-up message frame is the longest.
In addition, if the management message frame is a unicast frame, the station device normally feeds back an ACK frame to the access point device after successfully receiving the unicast frame, and since the ACK frame itself is an acknowledgement frame, the station device does not need to be fed back for acknowledgement by the access point device.
The receiver sends an ACK frame without src to the receiving end, and the receiving end confirms that an ACK frame is received (that is, according to the standard protocol, the sending unicast frame and the ACK frame corresponding to the sending unicast frame should be regarded as an atomic inseparable whole to indicate a successful communication).
In any one of the above technical solutions, preferably, the method further includes: and the writing unit is used for writing timestamp information into the management message frame, wherein the timestamp information is used for indicating the starting time of the station equipment for receiving the wake-up message frame, and the time interval between the time corresponding to the timestamp information and the starting time corresponds to a local pre-stored time delay parameter of the station equipment.
In the technical scheme, by writing timestamp information in a management message frame, a station device determines a starting time for receiving a wakeup message frame according to the timestamp information and a delay parameter, for example, the management message frame is a beacon frame, and the delay parameter is 50 milliseconds, so that the station device determines that a secondary communication interface is controlled to receive the wakeup message frame after 50 milliseconds of sending the beacon frame according to the timestamp information of the management message frame, and the spectrum utilization rate is improved.
According to an embodiment of the fourth aspect of the present invention, there is further provided a communication apparatus of a wireless local area network, including: and the communication unit is used for receiving a management message frame, wherein the management message frame carries duration indication information, the duration indication information is used for indicating the cycle time of a secondary communication interface of the site equipment for receiving the wake-up message frame, and the wake-up message frame is used for waking up a primary communication interface of the site equipment.
In the technical scheme, the management message frame is received, the management message frame carries the duration indication information, and the secondary communication interface is controlled to receive the wake-up message frame according to the cycle time indicated by the management message frame (the secondary communication interface does not enter a sleep state and always supports receiving the wake-up message frame), so that the primary communication interface of the access point device is woken up, and then the primary communication interface and the access point device enter an initial network access connection process or a data frame interaction process, so that the communication device further saves power consumption.
The station equipment can determine the starting time and the duration of the wake-up message frame according to the management message frame in advance, so that the secondary communication interface can also enter a sleep mode, and awakens to receive the wake-up message frame before the starting time, thereby being beneficial to reducing the power consumption of the station equipment and the access point equipment at the same time and improving the frequency spectrum utilization rate and the throughput of the basic service set.
In any one of the above technical solutions, preferably, the method further includes: a first parsing unit for parsing the management message frame to receive a duration field and a frame type field, the duration field corresponding to the cycle time; a first determining unit, configured to determine that the wake-up message frame is a unicast message frame when the frame type field is detected to be a first value; the first determination unit is further configured to: when the frame type field is detected to be a second value, determining the awakening message frame as a multicast message frame; the first determination unit is further configured to: and when the frame type field is detected to be a third value, determining that the awakening message frame is a broadcast message frame, wherein any two time length fields in the time length field carried by the unicast message frame, the time length field carried by the multicast message frame and the time length field carried by the broadcast message frame are different.
In the technical scheme, the time length field corresponding to each management message frame is determined by analyzing the numerical value of the frame type field code and accurately determining whether the wake-up message frame is a unicast frame, a multicast frame or a broadcast frame according to the frame type field, so that the occurrence of data collision is further reduced.
For example, one encoding method for the frame type field is:
(1) if the first bit of the first byte of the frame type field is '1', the wake-up message frame is a multicast frame;
(2) the first two bits of the first byte of the frame type field are both '1', which indicates that the wake-up message frame is a broadcast frame;
(3) the first bit of the first byte of the frame type field is "0", which indicates that the wake-up message frame is a unicast frame.
Furthermore, considering that the frequency of receiving the multicast wake-up message frame and the frequency of receiving the broadcast wake-up message frame by STAs (i.e., site devices) are lower than the frequency of receiving the unicast wake-up message frame, the period duration carried by the unicast wake-up message frame is shorter than the duration in the broadcast wake-up message frame and the multicast wake-up message frame; considering that the purpose of the STAs receiving the broadcasted wake-up message frame may be for time synchronization between the communication devices, the duration in the broadcasted wake-up message frame is the longest.
In addition, if the management message frame is a unicast frame, the station device normally feeds back an ACK frame to the access point device after successfully receiving the unicast frame, and since the ACK frame itself is an acknowledgement frame, the station device does not need to be fed back for acknowledgement by the access point device.
The receiver sends an ACK frame without src to the receiving end, and the receiving end confirms that an ACK frame is received (that is, according to the standard protocol, the sending unicast frame and the ACK frame corresponding to the sending unicast frame should be regarded as an atomic inseparable whole to indicate a successful communication).
In any one of the above technical solutions, preferably, the method further includes: a second parsing unit for parsing the management message frame to receive the timestamp information; and the second determining unit is used for determining the starting moment of receiving the awakening message frame according to the timestamp information and the locally stored delay parameter.
In the technical scheme, by analyzing timestamp information written in a management message frame, a station device determines a starting time for receiving a wakeup message frame according to the timestamp information and a delay parameter, for example, the management message frame is a beacon frame, and the delay parameter is 50 milliseconds, and the station device determines, according to the timestamp information of the management message frame, that a secondary communication interface is controlled to receive the wakeup message frame after 50 milliseconds of sending the beacon frame.
In any one of the above technical solutions, preferably, the management message frame is one of an awake state request reception frame, a probe response frame, an awake beacon frame, and a beacon frame.
In the technical scheme, the awake state Request receiving frame is equivalent to a WUR Request frame, the awake Beacon frame is equivalent to a WUR Beacon frame, the Beacon frame is a broadcast Beacon frame, and the Probe response frame is a Probe Request frame in an initial network access process.
According to the fifth aspect of the present invention, an access point device is also provided, which includes the communication apparatus of the wireless local area network defined in any one of the above technical solutions.
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 defined in any one of the above technical solutions.
According to the technical scheme, the access point equipment generates and sends the management message frame to the site equipment, and the site equipment controls the secondary communication interface to wake up and receive the wake-up message frame according to the cycle time indicated by the management message frame so as to wake up the primary communication interface of the access point equipment, so that the primary communication interface and the access point equipment enter an initial network access connection process or a data frame interaction process, and the communication equipment further saves power consumption.
Drawings
Fig. 1 shows a schematic flow diagram of a communication method of a wireless local area network according to one embodiment of the invention;
fig. 2 shows a schematic flow diagram of a communication method of a wireless local area network according to another embodiment of the present invention;
fig. 3 shows a schematic block diagram of a communication device of a wireless local area network according to an embodiment of the present invention;
fig. 4 shows a schematic block diagram of a communication device of a wireless local area network according to another embodiment of the present invention;
fig. 5 shows a schematic block diagram of an access point device according to an embodiment of the invention;
FIG. 6 shows a schematic block diagram of a station apparatus according to one embodiment of the present invention;
fig. 7 shows an interaction diagram of a communication scheme of a wireless local area network according to an embodiment of the invention;
fig. 8 shows a schematic diagram of cycle times of a communication scheme of a wireless local area network according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced using third parties different from those described herein, and thus, the scope of the present invention is not limited by the specific embodiments disclosed below.
Fig. 1 shows a schematic flow diagram of a communication method of a wireless local area network according to one embodiment of the present invention.
Fig. 1 shows a communication method of a wireless local area network according to an embodiment of the present invention, including: step S102, generating and transmitting a management message frame, wherein the management message frame carries duration indication information, the duration indication information is used for indicating the cycle time of a secondary communication interface of the site equipment for receiving the wake-up message frame, and the wake-up message frame is used for waking up a primary communication interface of the site equipment.
In the technical scheme, the station equipment controls the secondary communication interface to wake up and receive the wake-up message frame according to the cycle time indicated by the management message frame by generating and transmitting the management message frame so as to wake up the primary communication interface of the access point equipment, and then the primary communication interface and the access point equipment enter an initial network access connection process or a data frame interaction process, so that the communication equipment further saves power consumption.
The station equipment can determine the starting time and the duration of the wake-up message frame according to the management message frame in advance, so that the secondary communication interface can also enter a sleep mode, and awakens to receive the wake-up message frame before the starting time, thereby being beneficial to reducing the power consumption of the station equipment and the access point equipment at the same time and improving the frequency spectrum utilization rate and the throughput of the basic service set.
In the foregoing technical solution, preferably, the duration indication information includes a duration field and a frame type field, and the duration field corresponds to the cycle time.
In the technical scheme, the coded duration indication information comprises a duration field and a frame type field, wherein the duration field corresponds to the cycle time, on one hand, the station device can determine that the wake-up message frame is a unicast frame (feeding back an ACK frame to confirm reception), a multicast frame or a broadcast frame according to the frame type field, and on the other hand, the station device determines the time period for the secondary communication device to receive the wake-up message frame according to the duration field to ensure that the secondary communication interface receives the wake-up message frame in time.
The primary communication interface and the secondary communication interface may be antenna assemblies, which may be physically separated or logically separated, and have mutually independent duty cycles.
In the above technical solution, preferably, the communication method of the wireless local area network further includes: when the frame type field is a first value, indicating the station equipment to receive the awakening message frame as a unicast message frame; and when the frame type field is a second value, indicating the site equipment to receive the wake-up message frame as a multicast message frame, and when the frame type field is a third value, indicating the site equipment to receive the wake-up message frame as a broadcast message frame, wherein any two time length fields in the time length field carried by the unicast message frame, the time length field carried by the multicast message frame and the time length field carried by the broadcast message frame are different.
In the technical scheme, different values are coded for the frame type field, the station equipment is indicated to accurately determine whether the wake-up message frame is a unicast frame, a multicast frame or a broadcast frame according to the frame type field, and different types of duration fields are set, so that the occurrence of data collision can be further reduced.
For example, one encoding method for the frame type field is:
(1) if the first bit of the first byte of the frame type field is "1", it indicates that the wake-up message frame is a multicast frame;
(2) the first two bits of the first byte of the frame type field are both '1', which indicates that the wake-up message frame is a broadcast frame;
(3) the first bit of the first byte of the frame type field is "0", which indicates that the wake-up message frame is a unicast frame.
Furthermore, considering that the frequency of receiving the multicast wake-up message frame and the frequency of receiving the broadcast wake-up message frame by STAs (i.e., site devices) are lower than the frequency of receiving the unicast wake-up message frame, the period duration carried by the unicast wake-up message frame is shorter than the duration in the broadcast wake-up message frame and the multicast wake-up message frame; considering also that the purpose of STAs receiving the broadcasted wake-up message frame may be for time synchronization between communication devices, the duration in the broadcasted wake-up message frame is the longest.
In addition, if the management message frame is a unicast frame, the station device normally feeds back an ACK frame to the access point device after successfully receiving the unicast frame, and since the ACK frame itself is an acknowledgement frame, the station device does not need to be fed back for acknowledgement by the access point device.
The receiver sends an ACK frame without src to the receiving end, and the receiving end confirms that an ACK frame is received (that is, according to the standard protocol, the sending unicast frame and the ACK frame corresponding to the sending unicast frame should be regarded as an atomic inseparable whole to indicate a successful communication).
In addition, the access point device can be compatible with or integrated with a mobile phone with a Wi-Fi communication module, a tablet computer, a music playing device, a navigation device, a router and the like.
In any one of the above technical solutions, preferably, the generating and sending a management message frame specifically includes: and writing timestamp information into the management message frame, wherein the timestamp information is used for indicating the starting time of the station equipment for receiving the wake-up message frame, and the time interval between the time corresponding to the timestamp information and the starting time corresponds to a local pre-stored delay parameter of the station equipment.
In the technical scheme, timestamp information is written in a management message frame, and the station device determines a starting time of receiving a wakeup message frame according to the timestamp information and a time delay parameter, for example, the management message frame is a beacon frame, and the time delay parameter is 50 milliseconds, so that the station device determines, according to the timestamp information of the management message frame, that a secondary communication interface is controlled to receive the wakeup message frame after 50 milliseconds of sending the beacon frame, and the frequency spectrum utilization rate is improved.
Fig. 2 is a diagram illustrating a communication method of a wireless local area network according to another embodiment of the present invention.
Fig. 2 shows a communication method of a wireless local area network according to an embodiment of the present invention, including: step S202, receiving a management message frame, where the management message frame carries duration indication information, where the duration indication information is used to indicate a cycle time for a secondary communication interface of a station device to receive a wake-up message frame, and the wake-up message frame is used to wake up a primary communication interface of the station device.
In the technical scheme, the management message frame is received, the management message frame carries the duration indication information, and the secondary communication interface is controlled to receive the wake-up message frame according to the cycle time indicated by the management message frame (the secondary communication interface does not enter a sleep state and always supports receiving the wake-up message frame), so that the primary communication interface of the access point device is woken up, and then the primary communication interface and the access point device enter an initial network access connection process or a data frame interaction process, so that the communication device further saves power consumption.
The station equipment can determine the starting time and the duration of the wake-up message frame according to the management message frame in advance, so that the secondary communication interface can also enter a sleep mode, and awakens to receive the wake-up message frame before the starting time, thereby being beneficial to reducing the power consumption of the station equipment and the access point equipment at the same time and improving the frequency spectrum utilization rate and the throughput of the basic service set.
The primary communication interface and the secondary communication interface may be antenna assemblies, which may be physically separated or logically separated, and have mutually independent duty cycles.
In any one of the above technical solutions, preferably, the communication method of the wireless local area network further includes: parsing the management message frame to receive a duration field and a frame type field, the duration field corresponding to the cycle time; when the frame type field is detected to be a first value, determining that the awakening message frame is a unicast message frame; and when the frame type field is detected to be a second value, determining that the awakening message frame is a multicast message frame, and when the frame type field is detected to be a third value, determining that the awakening message frame is a broadcast message frame, wherein any two time length fields in the time length field carried by the unicast message frame, the time length field carried by the multicast message frame and the time length field carried by the broadcast message frame are different.
In the technical scheme, the time length field corresponding to each management message frame is determined by analyzing the numerical value of the frame type field code and accurately determining whether the wake-up message frame is a unicast frame, a multicast frame or a broadcast frame according to the frame type field, so that the occurrence of data collision is further reduced.
For example, one encoding method for the frame type field is:
(1) if the first bit of the first byte of the frame type field is '1', the wake-up message frame is a multicast frame;
(2) the first two bits of the first byte of the frame type field are both '1', which indicates that the wake-up message frame is a broadcast frame;
(3) the first bit of the first byte of the frame type field is "0", which indicates that the wake-up message frame is a unicast frame.
Furthermore, considering that the frequency of receiving the multicast wake-up message frame and the frequency of receiving the broadcast wake-up message frame by STAs (i.e., site devices) are lower than the frequency of receiving the unicast wake-up message frame, the period duration carried by the unicast wake-up message frame is shorter than the duration in the broadcast wake-up message frame and the multicast wake-up message frame; considering that the purpose of the STAs receiving the broadcasted wake-up message frame may be for time synchronization between the communication devices, the duration in the broadcasted wake-up message frame is the longest.
In addition, if the management message frame is a unicast frame, the station device normally feeds back an ACK frame to the access point device after successfully receiving the unicast frame, and since the ACK frame itself is an acknowledgement frame, the station device does not need to be fed back for acknowledgement by the access point device.
The receiver sends an ACK frame without src to the receiving end, and the receiving end confirms that an ACK frame is received (that is, according to the standard protocol, the sending unicast frame and the ACK frame corresponding to the sending unicast frame should be regarded as an atomic inseparable whole to indicate a successful communication).
In any one of the above technical solutions, preferably, the communication method of the wireless local area network further includes: parsing the management message frame to receive timestamp information; and determining the starting time of receiving the awakening message frame according to the timestamp information and the locally stored time delay parameter.
In the technical scheme, by analyzing timestamp information written in a management message frame, a station device determines a starting time for receiving a wakeup message frame according to the timestamp information and a delay parameter, for example, the management message frame is a beacon frame, and the delay parameter is 50 milliseconds, and the station device determines, according to the timestamp information of the management message frame, that a secondary communication interface is controlled to receive the wakeup message frame after 50 milliseconds of sending the beacon frame.
In any one of the above technical solutions, preferably, the management message frame is one of an awake state request reception frame, a probe response frame, an awake beacon frame, and a beacon frame.
In the technical scheme, the awake state Request receiving frame is equivalent to a WUR Request frame, the awake Beacon frame is equivalent to a WUR Beacon frame, the Beacon frame is a broadcast Beacon frame, and the Probe response frame is a Probe Request frame in an initial network access process.
Fig. 3 shows a schematic block diagram of a communication device of a wireless local area network according to an embodiment of the present invention.
Fig. 3 shows a communication apparatus 300 of a wireless local area network according to an embodiment of the present invention, including: the communication unit 302 is configured to generate and send a management message frame, where the management message frame carries duration indication information, where the duration indication information is used to indicate a cycle time for a secondary communication interface of a station device to receive a wake-up message frame, and the wake-up message frame is used to wake up a primary communication interface of the station device.
In the technical scheme, the station equipment controls the secondary communication interface to wake up and receive the wake-up message frame according to the cycle time indicated by the management message frame by generating and transmitting the management message frame so as to wake up the primary communication interface of the access point equipment, and then the primary communication interface and the access point equipment enter an initial network access connection process or a data frame interaction process, so that the communication equipment further saves power consumption.
The station equipment can determine the starting time and the duration of the wake-up message frame according to the management message frame in advance, so that the secondary communication interface can also enter a sleep mode, and awakens to receive the wake-up message frame before the starting time, thereby being beneficial to reducing the power consumption of the station equipment and the access point equipment at the same time and improving the frequency spectrum utilization rate and the throughput of the basic service set.
In any one of the above technical solutions, preferably, the duration indication information includes a duration field and a frame type field, and the duration field corresponds to the cycle time.
In the technical scheme, the coded duration indication information comprises a duration field and a frame type field, wherein the duration field corresponds to the cycle time, on one hand, the station device can determine that the wake-up message frame is a unicast frame (feeding back an ACK frame to confirm reception), a multicast frame or a broadcast frame according to the frame type field, and on the other hand, the station device determines the time period for the secondary communication device to receive the wake-up message frame according to the duration field to ensure that the secondary communication interface receives the wake-up message frame in time.
In any one of the above technical solutions, preferably, the method further includes: an indicating unit 304, configured to indicate, when the frame type field is a first value, the station device to receive the wakeup message frame as a unicast message frame; the indication unit 304 is further configured to: when the frame type field is a second value, the station device is instructed to receive the wake-up message frame as a multicast message frame, and the instructing unit 304 is further configured to: and when the frame type field is a third value, indicating the station equipment to receive the wake-up message frame as a broadcast message frame, wherein any two time length fields in the time length field carried by the unicast message frame, the time length field carried by the multicast message frame and the time length field carried by the broadcast message frame are different.
In the technical scheme, different values are coded for the frame type field, the station equipment is indicated to accurately determine whether the wake-up message frame is a unicast frame, a multicast frame or a broadcast frame according to the frame type field, and different types of duration fields are set, so that the occurrence of data collision can be further reduced.
For example, one encoding method for the frame type field is:
(1) if the first bit of the first byte of the frame type field is '1', the wake-up message frame is a multicast frame;
(2) the first two bits of the first byte of the frame type field are both '1', which indicates that the wake-up message frame is a broadcast frame;
(3) the first bit of the first byte of the frame type field is "0", which indicates that the wake-up message frame is a unicast frame.
Furthermore, considering that the frequency of receiving the multicast wake-up message frame and the frequency of receiving the broadcast wake-up message frame by STAs (i.e., site devices) are lower than the frequency of receiving the unicast wake-up message frame, the period duration carried by the unicast wake-up message frame is shorter than the duration in the broadcast wake-up message frame and the multicast wake-up message frame; considering that the purpose of the STAs receiving the broadcasted wake-up message frame may be for time synchronization between the communication devices, the duration in the broadcasted wake-up message frame is the longest.
In addition, if the management message frame is a unicast frame, the station device normally feeds back an ACK frame to the access point device after successfully receiving the unicast frame, and since the ACK frame itself is an acknowledgement frame, the station device does not need to be fed back for acknowledgement by the access point device.
The receiver sends an ACK frame without src to the receiving end, and the receiving end confirms that an ACK frame is received (that is, according to the standard protocol, the sending unicast frame and the ACK frame corresponding to the sending unicast frame should be regarded as an atomic inseparable whole to indicate a successful communication).
In any one of the above technical solutions, preferably, the method further includes: a writing unit 306, configured to write timestamp information in the management message frame, where the timestamp information is used to indicate a starting time when the station device receives the wakeup message frame, and a time interval between a time corresponding to the timestamp information and the starting time corresponds to a locally pre-stored delay parameter of the station device.
In the technical scheme, by writing timestamp information in a management message frame, a station device determines a starting time for receiving a wakeup message frame according to the timestamp information and a delay parameter, for example, the management message frame is a beacon frame, and the delay parameter is 50 milliseconds, so that the station device determines that a secondary communication interface is controlled to receive the wakeup message frame after 50 milliseconds of sending the beacon frame according to the timestamp information of the management message frame, and the spectrum utilization rate is improved.
It is to be noted that the communication device 300 may be compatible with or integrated with an access point device such as a mobile phone, a tablet computer, a music playing device, a navigation device, and a router having a Wi-Fi communication module, the communication unit 302 may be the communication device 300 and may be an antenna, a carrier modulation module, and the like, and the indication unit 304 and the writing unit 306 may be a processor (CPU), a controller (MCU), an embedded micro control chip, a baseband processor, and the like of the communication device 300.
Fig. 4 shows a schematic block diagram of a communication device of a wireless local area network according to another embodiment of the present invention.
Fig. 4 shows a communication apparatus 400 of a wireless local area network according to another embodiment of the present invention, including: a communication unit 402, configured to receive a management message frame, where the management message frame carries duration indication information, where the duration indication information is used to indicate a cycle time for a secondary communication interface of a station device to receive a wake-up message frame, and the wake-up message frame is used to wake up a primary communication interface of the station device.
In the technical scheme, the management message frame is received, the management message frame carries the duration indication information, and the secondary communication interface is controlled to receive the wake-up message frame according to the cycle time indicated by the management message frame (the secondary communication interface does not enter a sleep state and always supports receiving the wake-up message frame), so that the primary communication interface of the access point device is woken up, and then the primary communication interface and the access point device enter an initial network access connection process or a data frame interaction process, so that the communication device further saves power consumption.
The station equipment can determine the starting time and the duration of the wake-up message frame according to the management message frame in advance, so that the secondary communication interface can also enter a sleep mode, and awakens to receive the wake-up message frame before the starting time, thereby being beneficial to reducing the power consumption of the station equipment and the access point equipment at the same time and improving the frequency spectrum utilization rate and the throughput of the basic service set.
In any one of the above technical solutions, preferably, the method further includes: a first parsing unit 404, configured to parse the management message frame to receive a duration field and a frame type field, where the duration field corresponds to the cycle time; a first determining unit 406, configured to determine that the wake-up message frame is a unicast message frame when the frame type field is detected to be a first value; the first determining unit 406 is further configured to: when the frame type field is detected to be a second value, determining the awakening message frame as a multicast message frame; the first determining unit 406 is further configured to: and when the frame type field is detected to be a third value, determining that the awakening message frame is a broadcast message frame, wherein any two time length fields in the time length field carried by the unicast message frame, the time length field carried by the multicast message frame and the time length field carried by the broadcast message frame are different.
In the technical scheme, the time length field corresponding to each management message frame is determined by analyzing the numerical value of the frame type field code and accurately determining whether the wake-up message frame is a unicast frame, a multicast frame or a broadcast frame according to the frame type field, so that the occurrence of data collision is further reduced.
For example, one encoding method for the frame type field is:
(1) if the first bit of the first byte of the frame type field is '1', the wake-up message frame is a multicast frame;
(2) the first two bits of the first byte of the frame type field are both '1', which indicates that the wake-up message frame is a broadcast frame;
(3) the first bit of the first byte of the frame type field is "0", which indicates that the wake-up message frame is a unicast frame.
Furthermore, considering that the frequency of receiving the multicast wake-up message frame and the frequency of receiving the broadcast wake-up message frame by STAs (i.e., site devices) are both lower than the frequency of receiving the unicast wake-up message frame, the period duration carried by the unicast wake-up message frame is shorter than the duration in the broadcast wake-up message frame and the multicast wake-up message frame; considering that the purpose of the STAs receiving the broadcasted wake-up message frame may be for time synchronization between the communication devices, the duration in the broadcasted wake-up message frame is the longest.
In addition, if the management message frame is a unicast frame, the station device normally feeds back an ACK frame to the access point device after successfully receiving the unicast frame, and since the ACK frame itself is an acknowledgement frame, the station device does not need to be fed back for acknowledgement by the access point device.
The receiver sends an ACK frame without src to the receiving end, and the receiving end confirms that an ACK frame is received (that is, according to the standard protocol, the sending unicast frame and the ACK frame corresponding to the sending unicast frame should be regarded as an atomic inseparable whole to indicate a successful communication).
In any one of the above technical solutions, preferably, the method further includes: a second parsing unit 408 for parsing the management message frame to receive the timestamp information; a second determining unit 410, configured to determine a starting time of receiving the wake-up message frame according to the timestamp information and the locally stored delay parameter.
In the technical scheme, by analyzing timestamp information written in a management message frame, a station device determines a starting time for receiving a wakeup message frame according to the timestamp information and a delay parameter, for example, the management message frame is a beacon frame, and the delay parameter is 50 milliseconds, and the station device determines, according to the timestamp information of the management message frame, that a secondary communication interface is controlled to receive the wakeup message frame after 50 milliseconds of sending the beacon frame.
In any one of the above technical solutions, preferably, the management message frame is one of an awake state request reception frame, a probe response frame, an awake beacon frame, and a beacon frame.
In the technical scheme, the awake state Request receiving frame is equivalent to a WUR Request frame, the awake Beacon frame is equivalent to a WUR Beacon frame, the Beacon frame is a broadcast Beacon frame, and the Probe response frame is a Probe Request frame in an initial network access process.
It is to be noted that the communication apparatus 400 may be compatible with or integrated with a mobile phone, a tablet computer, a music playing apparatus, a navigation apparatus, a router, and other station devices having a Wi-Fi communication module, the communication unit 402 may be the communication apparatus 400, which may be an antenna, a carrier modulation module, and the like, and the first parsing unit 404, the first determining unit 406, the second parsing unit 408, and the second determining unit 410 may be a processor (CPU), a controller (MCU), an embedded micro-control chip, a baseband processor, and the like of the communication apparatus 400.
Fig. 5 shows a schematic block diagram of an access point device according to an embodiment of the invention.
Fig. 5 shows an access point device 500 according to another embodiment of the present invention, which includes the communication apparatus 300 of the wireless local area network defined in any one of the above technical solutions, and therefore, the access point device 500 has all the technical effects of the communication apparatus 300 of the wireless local area network defined in any one of the above technical solutions, which are not described herein again.
Fig. 6 shows a schematic block diagram of a station device according to an embodiment of the invention.
As shown in fig. 6, a station device 600 according to another embodiment of the present invention includes the communication apparatus 400 of the wireless local area network defined in any one of the above technical solutions, and the station device 600 further includes a primary communication interface 602 and a secondary communication interface 604, so that the station device 600 has all the technical effects of the communication apparatus 400 of the wireless local area network defined in any one of the above technical solutions, which are not described herein again.
Example (b):
embodiments of communication schemes of the wireless lan according to the present invention will be specifically described below with reference to fig. 5 to 8.
Implementing an initial network-entry connection process between the access point device 500 shown in fig. 5 and the station device 600 shown in fig. 6 is illustrated in fig. 7.
As shown in fig. 8, the message management frame indicates a cycle time of the secondary communication interface 604 of the station apparatus 600 receiving the wakeup message frame, where a Period in fig. 8 includes an active Period of the wakeup message frame, which is denoted as an On duration parameter, where the On duration parameter may be in an Information Element (IE) form, and in addition, the Period in fig. 8 further includes a start time, which is a start time of receiving the wakeup message frame, at which the secondary communication interface 604 is controlled to wake up to receive the wakeup message frame, and the secondary communication interface 604 wakes up the primary communication interface 602 after receiving the wakeup message frame, and after the primary communication interface 602 wakes up, the access point apparatus 500 feeds back a control frame (such as an ACK frame) as a response, and then the primary communication interface 602 performs an initial network access connection operation with the access point apparatus 500, specifically including:
(1) the access point device 500 periodically broadcasts Beacon frames (i.e., Beacon frames);
(2) the station apparatus 600 broadcasts a Probe Request frame to the main communication interface 602;
(3) access point device 500 sends a Probe response frame to primary communication interface 602;
(4) the main communication interface 602 feeds back an ACK frame to the access point device 500 and transmits an Authentication Request frame (deauthentication Request frame);
(5) the access point device 500 feeds back an ACK frame to the main communication interface 602 and transmits an Authentication response frame (deauthentication response frame);
(6) the main communication interface 602 feeds back an ACK frame to the access point device 500 and transmits an Association Request frame (Association Request frame);
(7) the access point device 500 feeds back an ACK frame to the main communication interface 602 and transmits an Association response frame;
(8) the access point device 500 feeds back an ACK frame to the station device 600 to indicate that the initial network access connection process between the station device 600 and the access point device 500 is completed, and starts to perform mutual communication of data frames.
The technical scheme of the present invention is described in detail with reference to the accompanying drawings, and in consideration of the power consumption problem and the data collision problem in the communication process of the wireless local area network, the present invention provides a communication scheme of the wireless local area network, in which an access point device generates and transmits a management message frame to a station device, and the station device controls a secondary communication interface to wake up and receive a wake-up message frame according to a cycle time indicated by the management message frame, so as to wake up a primary communication interface of the access point device, and then the primary communication interface and the access point device enter an initial network access connection process or a data frame interaction process, so that the communication device further saves power consumption.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to 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 (12)
1. A communication method of a wireless local area network is applicable to an access point device, and is characterized in that the communication method of the wireless local area network comprises the following steps:
generating and transmitting a management message frame, wherein the management message frame carries duration indication information,
the time length indication information is used for indicating the cycle time of a secondary communication interface of the site equipment for receiving a wake-up message frame, and the wake-up message frame is used for waking up a primary communication interface of the site equipment;
the duration indication information comprises a duration field and a frame type field, and the duration field corresponds to the cycle time;
when the frame type field is a first value, indicating the site equipment to receive the awakening message frame as a unicast message frame;
when the frame type field is a second value, indicating the site equipment to receive the awakening message frame as a multicast message frame;
when the frame type field is a third value, indicating the site equipment to receive the wake-up message frame as a broadcast message frame;
any two of the time length fields carried by the unicast message frame, the multicast message frame and the broadcast message frame are different.
2. The wlan communication method according to claim 1, wherein generating and transmitting the management message frame specifically includes:
writing timestamp information in the management message frame, the timestamp information being used to indicate a starting time at which the station device receives the wake-up message frame,
and the time interval between the time corresponding to the timestamp information and the starting time corresponds to a local pre-stored time delay parameter of the site equipment.
3. A communication method of a wireless local area network is applicable to station equipment, and is characterized in that the communication method of the wireless local area network comprises the following steps:
receiving a management message frame, wherein the management message frame carries duration indication information,
the duration indication information is used for indicating the cycle time of a secondary communication interface of the site equipment for receiving a wake-up message frame, and the wake-up message frame is used for waking up a primary communication interface of the site equipment;
parsing the management message frame to receive a duration field and a frame type field, the duration field corresponding to the cycle time;
when the frame type field is detected to be a first value, determining that the awakening message frame is a unicast message frame;
when the frame type field is detected to be a second value, determining the awakening message frame to be a multicast message frame;
when the frame type field is detected to be a third value, determining the awakening message frame to be a broadcast message frame;
any two of the time length fields carried by the unicast message frame, the multicast message frame and the broadcast message frame are different.
4. The communication method of the wireless local area network according to claim 3, further comprising:
parsing the management message frame to receive timestamp information;
and determining the starting time for receiving the awakening message frame according to the timestamp information and the locally stored time delay parameter.
5. The communication method of the wireless local area network according to any one of claims 1, 3 and 4,
the management message frame is one of an awake state request receiving frame, a probe response frame, an awake beacon frame and a beacon frame.
6. A communication apparatus of a wireless local area network, adapted to an access point device, the communication apparatus of the wireless local area network comprising:
a communication unit, configured to generate and send a management message frame, where the management message frame carries duration indication information,
the time length indication information is used for indicating the cycle time of a secondary communication interface of the site equipment for receiving a wake-up message frame, and the wake-up message frame is used for waking up a primary communication interface of the site equipment;
the duration indication information comprises a duration field and a frame type field, and the duration field corresponds to the cycle time;
an indicating unit, configured to indicate, when the frame type field is a first value, the station device to receive the wake-up message frame as a unicast message frame;
the indication unit is further configured to: when the frame type field is a second value, indicating the site equipment to receive the awakening message frame as a multicast message frame;
the indication unit is further configured to: when the frame type field is a third value, indicating the site equipment to receive the wake-up message frame as a broadcast message frame;
any two of the time length fields carried by the unicast message frame, the multicast message frame and the broadcast message frame are different.
7. The apparatus for communicating in a wireless local area network according to claim 6, further comprising:
a writing unit, configured to write timestamp information in the management message frame, where the timestamp information is used to indicate a starting time when the station device receives the wakeup message frame,
and the time interval between the time corresponding to the timestamp information and the starting time corresponds to a local pre-stored time delay parameter of the site equipment.
8. A communication apparatus of a wireless local area network, adapted to a station device, the communication apparatus of the wireless local area network comprising:
a communication unit, configured to receive a management message frame, where the management message frame carries duration indication information,
the duration indication information is used for indicating the cycle time of a secondary communication interface of the site equipment for receiving a wake-up message frame, and the wake-up message frame is used for waking up a primary communication interface of the site equipment;
a first parsing unit, configured to parse the management message frame to receive a duration field and a frame type field, where the duration field corresponds to the cycle time;
a first determining unit, configured to determine that the wake-up message frame is a unicast message frame when it is detected that the frame type field is a first value;
the first determination unit is further configured to: when the frame type field is detected to be a second value, determining the awakening message frame to be a multicast message frame;
the first determination unit is further configured to: determining the wake-up message frame as a broadcast message frame when the frame type field is detected to be a third value,
and any two of the time length fields carried by the unicast message frame, the multicast message frame and the broadcast message frame are different.
9. The communications apparatus of wireless local area network according to claim 8, further comprising:
a second parsing unit for parsing the management message frame to receive timestamp information;
and the second determining unit is used for determining the starting moment for receiving the awakening message frame according to the timestamp information and the locally stored time delay parameter.
10. The communication apparatus of wireless local area network according to claim 6 or 8,
the management message frame is one of an awake state request receiving frame, a probe response frame, an awake beacon frame and a beacon frame.
11. An access point device, comprising:
communication device of a wireless local area network according to claim 6 or 7.
12. A station apparatus, comprising:
communication device of a wireless local area network according to any of claims 8 to 10.
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| US9241307B2 (en) * | 2012-10-24 | 2016-01-19 | Qualcomm Incorporated | Method and apparatus using an ultra low power signal with scheduled power save modes |
| US20150195849A1 (en) * | 2014-01-06 | 2015-07-09 | Intel IP Corporation | Systems, methods and devices for multiple signal co-existence in multiple-use frequency spectrum |
| US9713087B2 (en) * | 2015-01-28 | 2017-07-18 | Qualcomm Incorporated | Triggered target wake time operation |
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