CN108076503B - Communication method, communication device, access point and station of wireless local area network - Google Patents
Communication method, communication device, access point and station of wireless local area network Download PDFInfo
- Publication number
- CN108076503B CN108076503B CN201611029862.2A CN201611029862A CN108076503B CN 108076503 B CN108076503 B CN 108076503B CN 201611029862 A CN201611029862 A CN 201611029862A CN 108076503 B CN108076503 B CN 108076503B
- Authority
- CN
- China
- Prior art keywords
- frame
- access point
- period
- station
- quiet period
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
- H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a communication method, a communication device, an access point and a station of a wireless local area network, wherein the communication method of the wireless local area network comprises the following steps: generating a silent period request frame, wherein the silent period request frame is used for applying for a silent period from an access point, the silent period indicates the time length of a station for performing point-to-point communication, the silent period request frame contains first indication information, the first indication information is used for indicating the access point that the station does not receive a wakeup frame sent by the access point in the silent period, and the wakeup frame is used for enabling a data frame receiver of the wakeup station to enter a wakeup state to receive cached downlink data sent by the access point; and sending the silent period request frame. The technical scheme of the invention ensures that the access point can not send the wake-up frame to the station in the silent period, thereby not causing interference to the point-to-point communication carried out by the station and ensuring the compatibility of the WUR and 802.11 ax.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a communication method of a wireless local area network, a communication apparatus of a wireless local area network, an access point, and a station.
Background
In 2016, 7 months, 802.11 has established a research group wur (wake Up receiver) of a next-generation Wi-Fi (Wireless Fidelity) technology, which is mainly applied to the aspect of internet of things and aims to save the power consumption of equipment as much as possible.
In the WUR research group, a Wake-up frame is defined, wherein a data frame receiver of a device may be in a sleep state, and when the Wake-up frame receiver of the device receives the Wake-up frame, the Wake-up frame receiver of the device wakes up the data frame receiver to perform normal communication (such as IEEE802.11 data communication or other signaling communication), and thus, the purpose of defining the Wake-up frame is to facilitate the device to save power consumption.
The WUR is required to be compatible with the existing 802.11ax standard in the standard establishment process of the WUR, and a quiet period (quiet period) is defined for a station in the 802.11ax standard and represents the time length of the station when the station carries out STA-STA operation (namely point-to-point communication).
Since the WUR requires the device to save power as much as possible and to receive the data buffered by the device, when the WUR is compatible with 802.11ax, if the station is in the quiet period, how to receive the wake up frame is a technical problem to be solved.
Disclosure of Invention
Based on at least one of the above technical problems, the present invention provides a new communication scheme for a wireless local area network, so that an access point may not send a wakeup frame to a station in a quiet period, and further may not cause interference to point-to-point communication performed by the station, and ensures compatibility between WURs (ieee802.11ba) and ieee802.11ax.
In view of the above, according to a first aspect of the present invention, a communication method of a wireless local area network is provided, including: generating a silent period request frame, wherein the silent period request frame is used for applying for a silent period from an access point, the silent period indicates the time length of a station for performing point-to-point communication, the silent period request frame contains first indication information, the first indication information is used for indicating the access point that the station does not receive a wakeup frame sent by the access point in the silent period, and the wakeup frame is used for enabling a data frame receiver of the wakeup station to enter a wakeup state to receive cached downlink data sent by the access point; and sending the silent period request frame.
In the technical scheme, the station does not receive the wake-up frame sent by the access point in the silent period by generating the silent period request frame containing the first indication information, so that the access point can not send the wake-up frame in the silent period, further the interference to the point-to-point communication performed by the station is avoided, and the compatibility of the WUR and 802.11ax is ensured.
Wherein, the receiver for receiving the wake-up frame and the data frame by the station can be the same physical entity, is only separated logically, and controls the working state by different internal operation instructions; in addition, the receiver that the station receives the wakeup frame and the data frame may also be two physical entities, and a communication interface exists between the wakeup frame receiver and the data frame receiver, and after the wakeup frame receiver receives the wake up frame, the communication interface sends a wakeup instruction to the data frame receiver to wake up the data frame receiver for communication. The data frame is an IEEE802.11 data frame, the wake-up frame is a wake-up frame, and the transmission power of the wake-up frame is much lower than that of the IEEE802.11 data frame.
In the above technical solution, preferably, after the transmitting the silence period request frame, the method further includes: receiving a quiet period response frame sent by the access point, wherein the quiet period response frame is used for allocating a quiet period to the station; and if the response frame of the silent period contains second indication information which is used for indicating that the access point has downlink data cached in the silent period, receiving an awakening frame sent by the access point after the silent period is finished.
In the technical scheme, when the silence period response frame contains the second indication information, and the second indication information is used for indicating that the access point has the buffered downlink data in the silence period, the wake-up frame sent by the access point is received after the silence period is finished, so that the data frame receiver is woken up according to the received wake-up frame to receive the buffered downlink data sent by the access point after the point-to-point communication is finished.
Further, the communication method of the wireless local area network further includes: and if the wake-up frame sent by the access point is received after the silence period is finished, the wake-up data frame receiver enters a wake-up state to receive the cached downlink data sent by the access point.
According to the second aspect of the present invention, there is also provided a communication method for a wireless local area network, including: receiving a quiet period request frame sent by a station, wherein the quiet period request frame is used for applying for a quiet period from an access point, the quiet period represents the time length of the station for performing point-to-point communication, the quiet period request frame contains first indication information, and the first indication information is used for indicating the access point that the station does not receive a wake-up frame sent by the access point in the quiet period; generating a quiet period response frame, where the quiet period response frame is used to allocate a quiet period to the station, and if the access point has downlink data cached in the quiet period, setting second indication information in the quiet period response frame, where the second indication information is used to indicate to the station that the access point will send a wakeup frame after the quiet period is finished; and sending the silent period response frame.
In the technical scheme, when a quiet period request frame generated by a station contains first indication information which indicates that the station does not receive a wake-up frame sent by an access point in a quiet period, the access point sets second indication information in a quiet period response frame generated by the station to indicate the station that the access point will send the wake-up frame after the quiet period is finished, so that the access point can not send the wake-up frame to the station in the quiet period, interference on point-to-point communication performed by the station is avoided, the wake-up frame can be sent after the point-to-point communication of the station is finished to ensure the transmission of buffered downlink data, and the compatibility of WUR and 802.11ax is ensured.
In the foregoing technical solution, preferably, the second indication information includes one or more bits in a Vender Specific Service Identifier field in the silence period response frame.
In any of the above technical solutions, preferably, the communication method of the wireless local area network further includes: generating a wake-up frame, wherein the wake-up frame is used for waking up a data frame receiver of a station to enter a wake-up state so as to receive cached downlink data sent by an access point; and after the silence period is ended, sending the wake-up frame.
According to the third aspect of the present invention, there is further provided a communication apparatus for a wireless local area network, including: a generating unit, configured to generate a silence period request frame, where the silence period request frame is used to apply for a silence period from an access point, where the silence period indicates a duration of point-to-point communication performed by a station, the silence period request frame includes first indication information, where the first indication information is used to indicate, to the access point, that the station does not receive a wakeup frame sent by the access point in the silence period, and the wakeup frame is used to wake up a data frame receiver of the station to enter a wakeup state to receive cached downlink data sent by the access point; a sending unit, configured to send the silence period request frame.
In the technical scheme, the station does not receive the wake-up frame sent by the access point in the silent period by generating the silent period request frame containing the first indication information, so that the access point can not send the wake-up frame in the silent period, further the interference to the point-to-point communication performed by the station is avoided, and the compatibility of the WUR and 802.11ax is ensured.
Wherein, the receiver for receiving the wake-up frame and the data frame by the station can be the same physical entity, is only separated logically, and controls the working state by different internal operation instructions; in addition, the receiver that the station receives the wakeup frame and the data frame may also be two physical entities, and a communication interface exists between the wakeup frame receiver and the data frame receiver, and after the wakeup frame receiver receives the wake up frame, the communication interface sends a wakeup instruction to the data frame receiver to wake up the data frame receiver for communication. The data frame is an IEEE802.11 data frame, the wake-up frame is a wake-up frame, and the transmission power of the wake-up frame is much lower than that of the IEEE802.11 data frame.
In the above technical solution, preferably, the communication device of the wireless local area network further includes: a receiving unit, configured to receive a quiet period response frame sent by the access point after the sending unit sends the quiet period request frame, where the quiet period response frame is used to allocate a quiet period to the station, and receive a wake-up frame sent by the access point after the quiet period is ended if the quiet period response frame includes second indication information that indicates that the access point has downlink data cached in the quiet period.
In the technical scheme, when the silence period response frame contains the second indication information, and the second indication information is used for indicating that the access point has the buffered downlink data in the silence period, the wake-up frame sent by the access point is received after the silence period is finished, so that the data frame receiver is woken up according to the received wake-up frame to receive the buffered downlink data sent by the access point after the point-to-point communication is finished.
Further, the communication device of the wireless local area network further includes: the processing unit is used for waking up the data frame receiver to enter a wake-up state if the receiving unit receives the wake-up frame sent by the access point after the silence period is ended; the receiving unit is further configured to receive the buffered downlink data sent by the access point after the data frame receiver enters the awake state.
According to the fourth aspect of the present invention, there is also provided a communication apparatus for a wireless local area network, including: a receiving unit, configured to receive a quiet period request frame sent by a station, where the quiet period request frame is used to apply for a quiet period from an access point, the quiet period indicates a duration of point-to-point communication performed by the station, and the quiet period request frame includes first indication information, where the first indication information is used to indicate to the access point that the station does not receive a wake-up frame sent by the access point in the quiet period; a generating unit, configured to generate a quiet period response frame, where the quiet period response frame is used to allocate a quiet period to the station, where if an access point has downlink data cached in the quiet period, second indication information is set in the quiet period response frame, and the second indication information is used to indicate, to the station, that the access point will send a wakeup frame after the quiet period is ended; a sending unit, configured to send the silence period response frame.
In the technical scheme, when a quiet period request frame generated by a station contains first indication information which indicates that the station does not receive a wake-up frame sent by an access point in a quiet period, the access point sets second indication information in a quiet period response frame generated by the station to indicate the station that the access point will send the wake-up frame after the quiet period is finished, so that the access point can not send the wake-up frame to the station in the quiet period, interference on point-to-point communication performed by the station is avoided, the wake-up frame can be sent after the point-to-point communication of the station is finished to ensure the transmission of buffered downlink data, and the compatibility of WUR and 802.11ax is ensured.
In the foregoing technical solution, preferably, the second indication information includes one or more bits in a Vender Specific Service Identifier field in the silence period response frame.
In any of the above technical solutions, preferably, the generating unit is further configured to generate a wakeup frame, where the wakeup frame is used to wake up a data frame receiver of a station to enter an awake state to receive buffered downlink data sent by an access point; the sending unit is further configured to send the wakeup frame after the silence period is ended.
According to a fifth aspect of the present invention, there is also provided a station, comprising: the communication device of the wireless local area network according to the third aspect.
According to a sixth aspect of the present invention, there is also provided an access point, comprising: a communication apparatus of a wireless local area network as described in the fourth aspect above.
Through the technical scheme, the access point can not send the wake-up frame to the station in the silent period, so that the interference on the point-to-point communication of the station is avoided, and the compatibility of the WUR and 802.11ax is ensured.
Drawings
Fig. 1 is a flowchart illustrating a communication method of a wireless local area network according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a communication apparatus of a wireless local area network according to a first embodiment of the present invention;
FIG. 3 shows a schematic structural diagram of a station according to an embodiment of the invention;
fig. 4 is a flowchart illustrating a communication method of a wireless lan according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a communication apparatus of a wireless local area network according to a second embodiment of the present invention;
FIG. 6 shows a schematic structural diagram of an access point according to an embodiment of the invention;
fig. 7 is a flowchart illustrating a communication method of a wireless local area network according to a third embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Fig. 1 is a flowchart illustrating a communication method of a wireless local area network according to a first embodiment of the present invention.
As shown in fig. 1, a communication method of a wireless local area network according to a first embodiment of the present invention includes the following steps:
step S10, a silence period request frame is generated, where the silence period request frame is used to apply for a silence period from an access point, the silence period indicates a duration of point-to-point communication performed by a station, the silence period request frame includes first indication information, the first indication information is used to indicate to the access point that the station does not receive a wakeup frame sent by the access point in the silence period, and the wakeup frame is used to wake up a data frame receiver of the station to enter a wakeup state to receive downlink data buffered by the access point.
Wherein, the receiver for receiving the wake-up frame and the data frame by the station can be the same physical entity, is only separated logically, and controls the working state by different internal operation instructions; in addition, the receiver that the station receives the wakeup frame and the data frame may also be two physical entities, and a communication interface exists between the wakeup frame receiver and the data frame receiver, and after the wakeup frame receiver receives the wake up frame, the communication interface sends a wakeup instruction to the data frame receiver to wake up the data frame receiver for communication. The data frame is an IEEE802.11 data frame, the wake-up frame is a wake-up frame, and the transmission power of the wake-up frame is much lower than that of the IEEE802.11 data frame.
For the first indication Information, when the quiet period request frame is represented by an IE (Information Element), the station may be represented not to receive the wake-up frame in the quiet period by setting a bit "00" in the IE.
Step S12, sending the quiet period request frame.
In the technical scheme shown in fig. 1, a quiet period request frame including first indication information is generated, and the first indication information indicates that a station does not receive a wake-up frame sent by an access point in a quiet period, so that the access point may not send the wake-up frame in the quiet period, and further, interference on point-to-point communication performed by the station is avoided, and compatibility between WUR and 802.11ax is ensured.
Further, after step S12, the method further includes: receiving a quiet period response frame sent by the access point, wherein the quiet period response frame is used for allocating a quiet period to the station; and if the response frame of the silent period contains second indication information which is used for indicating that the access point has downlink data cached in the silent period, receiving an awakening frame sent by the access point after the silent period is finished.
In the technical scheme, when the silence period response frame contains the second indication information, and the second indication information is used for indicating that the access point has the buffered downlink data in the silence period, the wake-up frame sent by the access point is received after the silence period is finished, so that the data frame receiver is woken up according to the received wake-up frame to receive the buffered downlink data sent by the access point after the point-to-point communication is finished.
Specifically, for the second indication information, when the silence period response frame is indicated by means of an IE, a bit "11" may be set in this IE to indicate that the station should receive the buffered downlink data sent by the access point after the end of the silence period.
In addition, in other embodiments of the present invention, the second indication information may also be equivalent to a wakeup frame, and the station directly sends a ps-poll frame to the access point after the silence period is ended, so as to obtain the buffered downlink data sent by the access point.
Further, the communication method of the wireless local area network further includes: and if the wake-up frame sent by the access point is received after the silence period is finished, the wake-up data frame receiver enters a wake-up state to receive the cached downlink data sent by the access point.
The main body of the communication method shown in fig. 1 may be a mobile phone or a PDA (Personal Digital Assistant), etc
Fig. 2 is a schematic structural diagram of a communication apparatus of a wireless local area network according to a first embodiment of the present invention.
As shown in fig. 2, a communication apparatus 200 of a wireless local area network according to a first embodiment of the present invention includes: a generating unit 202 and a transmitting unit 204.
The generating unit 202 is configured to generate a quiet period request frame, where the quiet period request frame is used to apply for a quiet period from an access point, the quiet period indicates a duration of point-to-point communication performed by a station, the quiet period request frame includes first indication information, the first indication information is used to indicate, to the access point, that the station does not receive a wakeup frame sent by the access point in the quiet period, and the wakeup frame is used to wake up a data frame receiver of the station to enter a wakeup state to receive cached downlink data sent by the access point; the sending unit 204 is configured to send the silence period request frame.
In a specific implementation, the generating unit 202 may be a signal processor, a central processing unit, a baseband processor, or the like; the transmitting unit 204 may be a Transmitter (Transmitter) or an antenna.
In the technical scheme, the station does not receive the wake-up frame sent by the access point in the silent period by generating the silent period request frame containing the first indication information, so that the access point can not send the wake-up frame in the silent period, further the interference to the point-to-point communication performed by the station is avoided, and the compatibility of the WUR and 802.11ax is ensured.
Wherein, the receiver for receiving the wake-up frame and the data frame by the station can be the same physical entity, is only separated logically, and controls the working state by different internal operation instructions; in addition, the receiver that the station receives the wakeup frame and the data frame may also be two physical entities, and a communication interface exists between the wakeup frame receiver and the data frame receiver, and after the wakeup frame receiver receives the wake up frame, the communication interface sends a wakeup instruction to the data frame receiver to wake up the data frame receiver for communication. The data frame is an IEEE802.11 data frame, the wake-up frame is a wake-up frame, and the transmission power of the wake-up frame is much lower than that of the IEEE802.11 data frame.
For the first indication information, when the quiet period request frame is indicated by means of an IE, the station may be indicated not to receive the wake-up frame in the quiet period by setting a bit "00" in the IE.
Further, the communication apparatus 200 of the wireless local area network further includes: a receiving unit 206, configured to receive, after the sending unit 204 sends the quiet period request frame, a quiet period response frame sent by the access point, where the quiet period response frame is used to allocate a quiet period to the station, and receive, after the quiet period is finished, a wake-up frame sent by the access point if the quiet period response frame includes second indication information that indicates that the access point has downlink data cached in the quiet period.
In particular implementations, the receiving unit 206 may be a receiver or an antenna.
In the technical scheme, when the silence period response frame contains the second indication information, and the second indication information is used for indicating that the access point has the buffered downlink data in the silence period, the wake-up frame sent by the access point is received after the silence period is finished, so that the data frame receiver is woken up according to the received wake-up frame to receive the buffered downlink data sent by the access point after the point-to-point communication is finished.
Specifically, for the second indication information, when the silence period response frame is indicated by means of an IE, a bit "11" may be set in this IE to indicate that the station should receive the buffered downlink data sent by the access point after the end of the silence period.
In addition, in other embodiments of the present invention, the second indication information may also be equivalent to a wakeup frame, and the station directly sends a ps-poll frame to the access point after the silence period is ended, so as to obtain the buffered downlink data sent by the access point.
Further, the communication apparatus 200 of the wireless local area network further includes: a processing unit 208, configured to wake up the data frame receiver to enter an awake state after the silence period is ended if the receiving unit 206 receives the wake-up frame sent by the access point; the receiving unit 206 is further configured to receive the buffered downlink data sent by the access point after the data frame receiver enters the awake state.
In particular implementations, the processing unit 208 may be a central processing unit or a baseband processor, etc.
Fig. 3 shows a schematic structural diagram of a station according to an embodiment of the invention.
As shown in fig. 3, a station 300 according to an embodiment of the present invention includes: such as the communication device 200 of the wireless local area network shown in fig. 2.
Fig. 4 is a flowchart illustrating a communication method of a wireless lan according to a second embodiment of the present invention.
As shown in fig. 4, a communication method of a wireless local area network according to a second embodiment of the present invention includes the following steps:
step S40, a silence period request frame sent by a station is received, where the silence period request frame is used to apply for a silence period from an access point, the silence period indicates a duration of point-to-point communication performed by the station, and the silence period request frame includes first indication information, where the first indication information is used to indicate to the access point that the station does not receive a wakeup frame sent by the access point in the silence period.
Step S42, generating a silence period response frame, where the silence period response frame is used to allocate a silence period to the station, where if the access point has downlink data buffered in the silence period, the silence period response frame is provided with second indication information, and the second indication information is used to indicate to the station that the access point will send a wakeup frame after the silence period is finished.
In one embodiment of the invention, the second indication information comprises one or more bits in a Vender Specific Service Identifier field in the silence period response frame.
Step S44, sending the silence period response frame.
In the technical scheme shown in fig. 4, when the quiet period request frame generated by the station includes the first indication information indicating that the station does not receive the wakeup frame sent by the access point in the quiet period, the access point sets the second indication information in the generated quiet period response frame to indicate to the station that the access point will send the wakeup frame after the quiet period is finished, so that the access point may not send the wakeup frame to the station in the quiet period, and further may not cause interference to point-to-point communication performed by the station, and the wakeup frame may be sent after the point-to-point communication of the station is finished to ensure transmission of buffered downlink data, thereby ensuring compatibility of the WUR with 802.11 ax.
Further, the communication method of the wireless local area network further includes: generating a wake-up frame, wherein the wake-up frame is used for waking up a data frame receiver of a station to enter a wake-up state so as to receive cached downlink data sent by an access point; and after the silence period is ended, sending the wake-up frame.
The execution subject of the communication method shown in fig. 4 may be a router or the like.
Fig. 5 is a schematic structural diagram of a communication apparatus of a wireless lan according to a second embodiment of the present invention.
As shown in fig. 5, a communication apparatus 500 of a wireless lan according to a second embodiment of the present invention includes: a receiving unit 502, a generating unit 504 and a transmitting unit 506.
The receiving unit 502 is configured to receive a quiet period request frame sent by a station, where the quiet period request frame is used to apply for a quiet period from an access point, the quiet period indicates a duration of point-to-point communication performed by the station, and the quiet period request frame includes first indication information, where the first indication information is used to indicate, to the access point, that the station does not receive a wakeup frame sent by the access point in the quiet period; the generating unit 504 is configured to generate a quiet period response frame, where the quiet period response frame is used to allocate a quiet period to the station, where if the access point has downlink data cached in the quiet period, second indication information is set in the quiet period response frame, and the second indication information is used to indicate, to the station, that the access point will send a wakeup frame after the quiet period is ended; the sending unit 506 is configured to send the silence period response frame.
In a specific implementation, the receiving unit 502 may be a receiver or an antenna, etc.; the generating unit 504 may be a signal processor, a central processing unit, a baseband processor, or the like; the transmitting unit 506 may be a transmitter or an antenna.
In the technical scheme, when a quiet period request frame generated by a station contains first indication information which indicates that the station does not receive a wake-up frame sent by an access point in a quiet period, the access point sets second indication information in a quiet period response frame generated by the station to indicate the station that the access point will send the wake-up frame after the quiet period is finished, so that the access point can not send the wake-up frame to the station in the quiet period, interference on point-to-point communication performed by the station is avoided, the wake-up frame can be sent after the point-to-point communication of the station is finished to ensure the transmission of buffered downlink data, and the compatibility of WUR and 802.11ax is ensured.
In one embodiment of the present invention, the second indication information includes one or more bits in a Vender Specific Service Identifier field in the silence period response frame.
In an embodiment of the present invention, the generating unit 504 is further configured to generate a wakeup frame, where the wakeup frame is used to wake up a data frame receiver of a station to enter an awake state to receive buffered downlink data sent by an access point; the sending unit 506 is further configured to send the wakeup frame after the silence period is ended.
Fig. 6 shows a schematic structural diagram of an access point according to an embodiment of the invention.
As shown in fig. 6, an access point 600 according to an embodiment of the present invention includes: such as the communication device 500 of the wireless local area network shown in fig. 5.
In summary, the technical solution of the present invention mainly determines the sending period of the wakeup frame according to the duration of the silent period of the station, so as to separate the sending time of the wakeup frame from the silent period, thereby avoiding the interference caused by the sending of the wakeup frame to the point-to-point communication between the stations. The method comprises the following specific steps:
1. before performing STA-STA operation (i.e., Point-to-Point communication), a station applies for a request period to an AP (Access Point), where the application duration is a quiet period, and considering that WUR needs to be compatible with 802.11ax, if the AP sends a wake up frame to the station in the quiet period, interoperation between the stations may be interfered, so that the station may take an identification bit when sending a quiet period request frame to indicate that the station does not receive the wake up frame sent by the AP in the quiet period.
The quiet period request frame may be in the form of an IE (Information Element), among others.
2. When the AP replies to the station with the application of the quiet period, if the AP has cached downlink data when the station applies for the quiet period, a bit is used in a reply quiet period response information element to indicate that the AP has cached downlink data, and a wake up frame is sent to the station after the quiet period is ended.
Wherein, the form of the quiet period response information element is shown in table 1:
TABLE 1
As shown in table 1, specifically, the buffered downlink data of the AP may be represented by one or more bits in the sender Specific Service Identifier field, and a wake up frame may be sent to the station after the quiet period is ended.
Fig. 7 is a flowchart illustrating a communication method of a wireless local area network according to a third embodiment of the present invention.
As shown in fig. 7, a communication method of a wireless local area network according to a third embodiment of the present invention includes:
in step 701, the station 2 generates a quiet period request frame. The quiet period request frame includes first indication information, where the first indication information is used to indicate to the access point 1 that the station 2 does not receive the wake-up frame sent by the access point 1 in the quiet period.
In step 702, station 2 sends a quiet period request frame.
In step 703, the ap 1 receives the quiet period request frame.
In step 704, the access point 1 generates a silence period response frame. The quiet period response frame is used to allocate a quiet period to the station 2, wherein if the access point 1 has downlink data buffered in the quiet period, second indication information is set in the quiet period response frame, and the second indication information is used to indicate to the station 2 that the access point 1 will send a wakeup frame after the quiet period is finished.
In step 706, station 2 receives the quiet period response frame. After receiving the silence period response frame, the station 2 acquires the silence period allocated by the access point 1, and further performs point-to-point communication in the silence period, and does not receive the wakeup frame sent by the access point 1 in the silence period.
In step 707, the access point 1 generates a wake-up frame.
In step 708, the ap 1 sends a wakeup frame after the end of the silence period.
In step 709, the station 2 receives the wakeup frame.
In step 710, the station 2 wakes up the data frame receiver to enter the awake state after receiving the wake-up frame.
In step 712, the station 2 receives the buffered downlink data.
The technical scheme of the invention is described in detail in the above with reference to the accompanying drawings, and the invention provides a new communication scheme of a wireless local area network, so that an access point can not send a wakeup frame to a station in a silent period, further interference on point-to-point communication performed by the station is avoided, and the compatibility of WUR and 802.11ax is ensured.
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 (12)
1. A communication method for a wireless local area network, comprising:
generating a silent period request frame, wherein the silent period request frame is used for applying for a silent period from an access point, the silent period indicates the time length of a station for performing point-to-point communication, the silent period request frame contains first indication information, the first indication information is used for indicating the access point that the station does not receive a wakeup frame sent by the access point in the silent period, and the wakeup frame is used for enabling a data frame receiver of the wakeup station to enter a wakeup state to receive cached downlink data sent by the access point;
transmitting the quiet period request frame;
after transmitting the quiet period request frame, the communication method further includes:
receiving a quiet period response frame sent by the access point, wherein the quiet period response frame is used for allocating a quiet period to the station;
and if the response frame of the silent period contains second indication information which is used for indicating that the access point has downlink data cached in the silent period, receiving an awakening frame sent by the access point after the silent period is finished.
2. The communication method of the wireless local area network according to claim 1, further comprising:
and if the wake-up frame sent by the access point is received after the silence period is finished, the wake-up data frame receiver enters a wake-up state to receive the cached downlink data sent by the access point.
3. A communication method for a wireless local area network, comprising:
receiving a quiet period request frame sent by a station, wherein the quiet period request frame is used for applying for a quiet period from an access point, the quiet period represents the time length of the station for performing point-to-point communication, the quiet period request frame contains first indication information, and the first indication information is used for indicating the access point that the station does not receive a wake-up frame sent by the access point in the quiet period;
generating a quiet period response frame, where the quiet period response frame is used to allocate a quiet period to the station, and if the access point has downlink data cached in the quiet period, setting second indication information in the quiet period response frame, where the second indication information is used to indicate to the station that the access point will send a wakeup frame after the quiet period is finished;
transmitting the silence period response frame;
and if the response frame of the silent period contains second indication information which is used for indicating that the access point has downlink data cached in the silent period, receiving an awakening frame sent by the access point after the silent period is finished.
4. The method of claim 3, wherein the second indication information comprises one or more bits in a Vender Specific Service Identifier field in the silence period response frame.
5. The communication method of the wireless local area network according to claim 3 or 4, further comprising:
generating a wake-up frame, wherein the wake-up frame is used for waking up a data frame receiver of a station to enter a wake-up state so as to receive cached downlink data sent by an access point;
and after the silence period is ended, sending the wake-up frame.
6. A communication apparatus of a wireless local area network, comprising:
a generating unit, configured to generate a silence period request frame, where the silence period request frame is used to apply for a silence period from an access point, where the silence period indicates a duration of point-to-point communication performed by a station, the silence period request frame includes first indication information, where the first indication information is used to indicate, to the access point, that the station does not receive a wakeup frame sent by the access point in the silence period, and the wakeup frame is used to wake up a data frame receiver of the station to enter a wakeup state to receive cached downlink data sent by the access point;
a transmitting unit, configured to transmit the quiet period request frame;
a receiving unit, configured to receive a quiet period response frame sent by the access point after the sending unit sends the quiet period request frame, where the quiet period response frame is used to allocate a quiet period to the station, an
And if the response frame of the silent period contains second indication information which is used for indicating that the access point has downlink data cached in the silent period, receiving an awakening frame sent by the access point after the silent period is finished.
7. The apparatus for communicating in a wireless local area network according to claim 6, further comprising: the processing unit is used for waking up the data frame receiver to enter a wake-up state if the receiving unit receives the wake-up frame sent by the access point after the silence period is ended;
the receiving unit is further configured to receive the buffered downlink data sent by the access point after the data frame receiver enters the awake state.
8. A communication apparatus of a wireless local area network, comprising:
a receiving unit, configured to receive a quiet period request frame sent by a station, where the quiet period request frame is used to apply for a quiet period from an access point, the quiet period indicates a duration of point-to-point communication performed by the station, and the quiet period request frame includes first indication information, where the first indication information is used to indicate to the access point that the station does not receive a wake-up frame sent by the access point in the quiet period;
a generating unit, configured to generate a quiet period response frame, where the quiet period response frame is used to allocate a quiet period to the station, where if an access point has downlink data cached in the quiet period, second indication information is set in the quiet period response frame, and the second indication information is used to indicate, to the station, that the access point will send a wakeup frame after the quiet period is ended;
a transmitting unit, configured to transmit the silence period response frame;
and if the response frame of the silent period contains second indication information which is used for indicating that the access point has downlink data cached in the silent period, receiving an awakening frame sent by the access point after the silent period is finished.
9. The communications apparatus of claim 8, wherein the second indication information comprises one or more bits in a Vender Specific Service Identifier field in the silence period response frame.
10. Communication device of a wireless local area network according to claim 8 or 9, characterized in that:
the generation unit is further configured to generate a wakeup frame, where the wakeup frame is used to wake up a data frame receiver of a station to enter a wakeup state to receive buffered downlink data sent by an access point;
the sending unit is further configured to send the wakeup frame after the silence period is ended.
11. A station, comprising: communication device of a wireless local area network according to any of claims 6 to 7.
12. An access point, comprising: communication device of a wireless local area network according to any of claims 8 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611029862.2A CN108076503B (en) | 2016-11-15 | 2016-11-15 | Communication method, communication device, access point and station of wireless local area network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611029862.2A CN108076503B (en) | 2016-11-15 | 2016-11-15 | Communication method, communication device, access point and station of wireless local area network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108076503A CN108076503A (en) | 2018-05-25 |
| CN108076503B true CN108076503B (en) | 2021-05-14 |
Family
ID=62161039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611029862.2A Active CN108076503B (en) | 2016-11-15 | 2016-11-15 | Communication method, communication device, access point and station of wireless local area network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108076503B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022021358A1 (en) * | 2020-07-31 | 2022-02-03 | 北京小米移动软件有限公司 | Multi-connection communication method and apparatus, and computer-readable storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102076067A (en) * | 2010-12-23 | 2011-05-25 | 北京星网锐捷网络技术有限公司 | Sleeping method, device and equipment of station and communication system |
| CN102281541A (en) * | 2010-06-13 | 2011-12-14 | 华为技术有限公司 | Silent period synchronization method and device |
| CN102334371A (en) * | 2009-02-27 | 2012-01-25 | 皇家飞利浦电子股份有限公司 | Scheduling and protection of quiet periods in a quiet zone for incumbent signal detection |
| WO2012060756A1 (en) * | 2010-11-05 | 2012-05-10 | Telefonaktiebolaget L M Ericsson (Publ) | Methods and devices for intersystem quiet period synchronization |
| CN103188775A (en) * | 2011-12-30 | 2013-07-03 | 华为技术有限公司 | Method, station, and system of quiet period sleep |
| CN104756560A (en) * | 2012-10-24 | 2015-07-01 | 高通股份有限公司 | Near passive receivers with regular PS mode and no ULP (AP is not aware of the receiver/circuit mode) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7885220B2 (en) * | 2007-08-17 | 2011-02-08 | Intel Corporation | Method and apparatus for improved dual channel operation and access point discovery in wireless communication networks |
| US8542620B2 (en) * | 2009-05-05 | 2013-09-24 | Qualcomm Incorporated | Dynamic energy saving mechanism for access points |
| US20150063321A1 (en) * | 2013-09-04 | 2015-03-05 | Qualcomm Incorporated | Radar detection |
| US9930535B2 (en) * | 2014-08-05 | 2018-03-27 | Cisco Technology, Inc. | Joint scheduler for integrated Wi-Fi and LTE-U wireless access point |
-
2016
- 2016-11-15 CN CN201611029862.2A patent/CN108076503B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102334371A (en) * | 2009-02-27 | 2012-01-25 | 皇家飞利浦电子股份有限公司 | Scheduling and protection of quiet periods in a quiet zone for incumbent signal detection |
| CN102281541A (en) * | 2010-06-13 | 2011-12-14 | 华为技术有限公司 | Silent period synchronization method and device |
| WO2012060756A1 (en) * | 2010-11-05 | 2012-05-10 | Telefonaktiebolaget L M Ericsson (Publ) | Methods and devices for intersystem quiet period synchronization |
| CN102076067A (en) * | 2010-12-23 | 2011-05-25 | 北京星网锐捷网络技术有限公司 | Sleeping method, device and equipment of station and communication system |
| CN103188775A (en) * | 2011-12-30 | 2013-07-03 | 华为技术有限公司 | Method, station, and system of quiet period sleep |
| CN104756560A (en) * | 2012-10-24 | 2015-07-01 | 高通股份有限公司 | Near passive receivers with regular PS mode and no ULP (AP is not aware of the receiver/circuit mode) |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108076503A (en) | 2018-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018157786A1 (en) | Method and equipment for indicating downlink service data | |
| CN107969028B (en) | Communication method, communication device, access point and station of wireless local area network | |
| JP2010068111A (en) | Wireless communication base station, wireless communication terminal, wireless communication system, and wireless communication method | |
| CN109429357B (en) | Communication method and device of wireless local area network, access point equipment and site equipment | |
| CN109041179B (en) | Communication method, communication device and communication equipment of wireless local area network | |
| CN108432305B (en) | System information sending and updating method and device | |
| CN109548119B (en) | Communication method and device of wireless local area network, access point equipment and site equipment | |
| CN107809789B (en) | Communication method, communication device, access point and station of wireless local area network | |
| EP3512262A1 (en) | Wireless local area network communications method, receiver, access point and station | |
| CN102932936A (en) | Resource scheduling method and network element | |
| CN109429300B (en) | Communication method and device of wireless local area network, access point equipment and site equipment | |
| CN108076503B (en) | Communication method, communication device, access point and station of wireless local area network | |
| CN109219154B (en) | Communication method, communication device and communication equipment of wireless local area network | |
| CN109429299B (en) | Communication method, communication device and communication equipment of wireless local area network | |
| CN109756956B (en) | Communication method and communication device, access point equipment and station equipment | |
| CN111684844B (en) | Method for acquiring system message and communication device | |
| CN109104756B (en) | Wake-up method, access point and station | |
| CN109151956B (en) | Communication method, communication device and communication equipment of wireless local area network | |
| CN108810825B (en) | Communication method, communication device and communication equipment of wireless local area network | |
| CN109699061B (en) | Communication method and communication device, access point equipment and station equipment | |
| CN109729569B (en) | Communication method and communication device, access point equipment and station equipment | |
| CN109041178B (en) | Communication method, communication device and communication equipment of wireless local area network | |
| CN109756958B (en) | Communication method and communication device, access point equipment and station equipment | |
| CN109429268B (en) | Communication method and device of wireless local area network, access point equipment and site equipment | |
| CN109756957B (en) | Communication method and communication device, access point equipment and station equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |