CN109548119A - Communication means, device, access point apparatus and the site apparatus of WLAN - Google Patents

Communication means, device, access point apparatus and the site apparatus of WLAN Download PDF

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Publication number
CN109548119A
CN109548119A CN201710868077.4A CN201710868077A CN109548119A CN 109548119 A CN109548119 A CN 109548119A CN 201710868077 A CN201710868077 A CN 201710868077A CN 109548119 A CN109548119 A CN 109548119A
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frame
message frame
communication interface
downlink data
site apparatus
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CN201710868077.4A
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CN109548119B (en
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董贤东
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Meizu Technology Co Ltd
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Meizu Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention provides a kind of communication means of WLAN, device, access point apparatus and site apparatus, wherein, the communication means of WLAN includes: to generate and send multicast wakeup message frame, multicast wakeup message frame includes the instruction information for receiving caching downlink data frame, and the site apparatus that instruction information is used to indicate reception multicast wakeup message frame wakes up its principal communication interface to receive caching downlink data frame；When indicating that information is set as the first value, indicate site apparatus after the prefixed time interval for receiving wakeup message frame, it wakes up principal communication interface and receives resource allocation message frame and access corresponding principal communication channel, principal communication channel is used to carry the wireless carrier of transmission buffer downlink data frame.According to the technical solution of the present invention, the power consumption for creating a further reduction communication equipment, improves the availability of frequency spectrum and data throughout.

Description

Communication means, device, access point apparatus and the site apparatus of WLAN
Technical field
The present invention relates to technical field of communication network, communication means, one kind in particular to a kind of WLAN The communication device of WLAN, a kind of access point apparatus and a kind of site apparatus.
Background technique
In July, 2016, IEEE (Institute of Electrical and Electronic Engineers, electricity Gas and Electronic Engineering Association) 802.11 set up next-generation Wi-Fi (Wireless Fidelity, Wireless Fidelity) technology Study group WUR (Wake up Receiver), i.e. IEEE (Institute of Electrical and Electronic Engineers, Institute of Electrical and Electronics Engineers) 802.11ba, in terms of being mainly used in Internet of Things, in order to maximum to the greatest extent The power consumption of equipment may be saved.
A kind of wakeup message (wake up) frame is defined in IEEE 802.11ba standard, main purpose is for calling out Wake up the principal communication interface of communication equipment, i.e. communication equipment passes through time communication interface and receives wake up frame, needed for power consumption it is little It is few more many than controlling power consumption needed for the principal communication interface of communication equipment is in wake states in this way in 1mw, be conducive to communication and set It is standby to save power consumption.
In the related technology, it is carried out in data exchange process based on IEEE 802.11ba standard, the principal communication of site apparatus connects Mouth supports periodical suspend mode, and the secondary communication interface of site apparatus once receives wakeup message frame, then wakes up main lead to immediately Believe that interface etc. receives down buffer storage data, but after having received the wakeup message frame of broadcast for site apparatus, it may be through One section of waiting time is spent to receive the data frame of access point apparatus transmission, if called out immediately according to aforementioned mechanism principal communication interface It wakes up, then causes the principal communication interface of site apparatus to need that the long period is waited just to start to receive caching downlink data frame, this is unfavorable In the power consumption for reducing site apparatus.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
For this purpose, it is an object of the present invention to provide a kind of communication means of WLAN.
Yet another object of the invention is that providing a kind of communication device of WLAN.
Yet another object of the invention is that providing a kind of access point apparatus.
Yet another object of the invention is that providing a kind of site apparatus.
To achieve the goals above, the technical solution of the first aspect of the present invention provides a kind of communication of WLAN Method, comprising: generate and send multicast wakeup message frame, multicast wakeup message frame includes the instruction for receiving caching downlink data frame Information, the site apparatus that instruction information is used to indicate reception multicast wakeup message frame wake up its principal communication interface to receive under caching Row data frame；When indicating that information is set as the first value, instruction site apparatus is in the prefixed time interval for receiving wakeup message frame Afterwards, it wakes up principal communication interface and receives resource allocation message frame and access corresponding principal communication channel, principal communication channel is for holding Carry the wireless carrier of transmission buffer downlink data frame.
In the technical scheme, by generating and sending multicast wakeup message frame, and when its instruction information carried is When the first value, site apparatus is indicated after prefixed time interval, wakes up principal communication interface, and access according to resource allocation message frame Principal communication channel advantageously reduces the power consumption of site apparatus, and can wake up in time master before receiving caching downlink data frame Communication interface and access principal communication channel, reduce the generation of data collision, while improving data throughout and frequency spectrum benefit With rate.
Wherein, prefixed time interval refer to site apparatus receive wakeup message frame to wake up principal communication interface between when Between it is poor, for example, it is main logical according to the access of resource allocation message frame to wake up principal communication interface after the 500ms for receiving wakeup message frame Believe channel, then prefixed time interval is 500ms, it avoids and directly wakes up principal communication interface after receiving wakeup message frame, Power consumption is reduced by reducing the stand-by time of principal communication interface, creates a further reduction the power consumption under WUR mode.In addition, Prefixed time interval can be included in broadcast wakeup message frame with the form of information element IE (Information Element) When being sent to one section that site apparatus or site apparatus and access point apparatus have just consulted before entering WUR mode Between length, wherein WUR mode refers to that the principal communication interface of communication equipment enters dormant state, at the secondary communication interface of communication equipment In wake states or periodical dormant state.
In addition, according to AID, (Association ID is closed access point apparatus for the caching downlink data frame of multicast Connection mark) to determine, whether associated either site equipment has had caching downlink data frame to be sent to field.For example, for one A multicast wakeup message frame, it may be comprising needing to wake up 5 site apparatus, and site apparatus is closed with access point apparatus AID is had been obtained for during connection, then whether has the downlink data frame of caching, example with a segment information element representation site apparatus Such as with 8 bits or 16 bits, one of bit is corresponding to a site apparatus STA, entire information element Composition mapped according to the size of AID and the height of bit, for example: the AID of site apparatus STA1 be 3, site apparatus The AID of STA2 is 5, and the AID of site apparatus STA3 is 9, and the AID of site apparatus STA4 is 7, then information element is " 1111 " expression Highest order corresponds to site apparatus STA3, and lowest order corresponds to site apparatus STA1, and its corresponding position can site apparatus STA into It is just had determined that before entering WUR mode.
And first value can be preset as one binary " 1 ".
In the above-mentioned technical solutions, it is preferable that the communication means of WLAN further include: receiving station equipment in response to Cache the confirmation message frame of downlink data frame feedback, wherein the when a length of caching downlink of the duration field of resource allocation message frame The transmission duration of data frame, the transmission duration of resource allocation message frame, twice and confirmation message frame for presetting interframe gap duration The sum of duration.
In the technical scheme, by receiving station equipment in response to the confirmation message frame of caching downlink data frame feedback (i.e. ACK frame) can determine and be successfully transmitted caching downlink data frame, and then promote the reliability of data interaction, especially for For multicast or the caching downlink data frame of broadcast, in the prior art, site apparatus can't feed back whether be properly received multicast Or the caching downlink data frame of broadcast, communication reliability be not high.
Wherein, by the way that the when a length of caching downlink data frame of the duration field (duration) of resource allocation message frame is arranged Transmission duration, the transmission duration of resource allocation message frame, the duration of twice of default interframe gap duration and confirmation message frame The sum of, so that access point apparatus total duration according to needed for the determining transmission for carrying out caching downlink data frame of duration field, reduces The generation of data collision.
In addition, default interframe gap duration (Short Inter-Frame Space, abbreviation SIFS) be two message frames it Between transmission time interval, chronomere is a millisecond rank, and such as default interframe gap duration can be set to 50ms, 100ms With 150ms etc..
In any of the above-described technical solution, it is preferable that the communication means of WLAN further include: when instruction information is set When being set to second value, the site apparatus that instruction receives multicast wakeup message frame does not wake up its principal communication interface.
In the technical scheme, by the way that when indicating that information is set as second value, instruction receives multicast wakeup message frame Site apparatus not awakening device principal communication interface, can further reduce the power consumption under WUR mode, wherein instruction information setting When for second value, instruction site apparatus needs to receive without caching downlink data frame, and the purpose for sending above-mentioned wakeup message frame can be with It is to carry out time synchronization between access point apparatus and the secondary communication interface of site apparatus.
Wherein, second value can be preset as one binary " 0 ".
In any of the above-described technical solution, it is preferable that the communication means of WLAN further include: called out sending multicast It wakes up after message frame and wake-up principal communication interface, generates and sends beacon frame, prefixed time interval is to send multicast wakeup message frame To the time interval generated between first frame beacon frame.
In the technical scheme, the beacon frame generated after waking up principal communication interface, can carry competing cycle parameter or non- Competing cycle parameter is further reduced with indicating the back off time of the principal communication interface access principal communication channel of site apparatus The generation of data collision, meanwhile, before receiving first frame beacon frame, it is not necessary to principal communication interface is waken up, to extend WUR mode Duration reduces power consumption.
The technical solution of the second aspect of the present invention, it is also proposed that a kind of communication means of WLAN, comprising: receive Multicast wakeup message frame, multicast wakeup message frame include the instruction information for receiving caching downlink data frame, and instruction information is for referring to Show to connect and wakes up principal communication interface to receive caching downlink data frame；When parsing instruction information is the first value, wakeup message is being received After the prefixed time interval of frame, principal communication interface is waken up；It receives resource allocation message frame and accesses the master of access point apparatus distribution Communication channel, principal communication channel are used to carry the wireless carrier of transmission buffer downlink data frame.
In the technical scheme, by receiving multicast wakeup message frame, and when its instruction information carried is the first value When, site apparatus is indicated after prefixed time interval, wakes up principal communication interface, and principal communication is accessed according to resource allocation message frame Channel advantageously reduces the power consumption of site apparatus, and can wake up in time principal communication before receiving caching downlink data frame and connect Mouth and access principal communication channel, reduce the generation of data collision, while improving data throughout and the availability of frequency spectrum.
Wherein, prefixed time interval refer to site apparatus receive wakeup message frame to wake up principal communication interface between when Between it is poor, for example, it is main logical according to the access of resource allocation message frame to wake up principal communication interface after the 500ms for receiving wakeup message frame Believe channel, then prefixed time interval is 500ms, it avoids and directly wakes up principal communication interface after receiving wakeup message frame, Power consumption is reduced by reducing the stand-by time of principal communication interface, creates a further reduction the power consumption under WUR mode.In addition, Prefixed time interval can be included in broadcast wakeup message frame with the form of information element IE (Information Element) When being sent to one section that site apparatus or site apparatus and access point apparatus have just consulted before entering WUR mode Between length, wherein WUR mode refers to that the principal communication interface of communication equipment enters dormant state, at the secondary communication interface of communication equipment In wake states or periodical dormant state.
In addition, according to AID, (Association ID is closed access point apparatus for the caching downlink data frame of multicast Connection mark) to determine, whether associated either site equipment has had caching downlink data frame to be sent to field.For example, for one A multicast wakeup message frame, it may be comprising needing to wake up 5 site apparatus, and site apparatus is closed with access point apparatus AID is had been obtained for during connection, then whether has the downlink data frame of caching, example with a segment information element representation site apparatus Such as with 8 bits or 16 bits, one of bit is corresponding to a site apparatus STA, entire information element Composition mapped according to the size of AID and the height of bit, for example: the AID of site apparatus STA1 be 3, site apparatus The AID of STA2 is 5, and the AID of site apparatus STA3 is 9, and the AID of site apparatus STA4 is 7, then information element is " 1111 " expression Highest order corresponds to site apparatus STA3, and lowest order corresponds to site apparatus STA1, and its corresponding position can site apparatus STA into It is just had determined that before entering WUR mode.
And first value can be preset as one binary " 1 ".
In any of the above-described technical solution, it is preferable that the communication means of WLAN further include: receive based on main logical Believe the caching downlink data frame of transmission, and send confirmation message frame to access point apparatus, wherein resource allocation message frame Duration field when it is a length of caching downlink data frame transmission duration, the transmission duration of resource allocation message frame, two default frames Between the sum of gap duration and the duration of confirmation message frame.
In the technical scheme, site apparatus is in response to caching downlink data frame feeding back confirmation message frame (i.e. ACK frame) extremely Access point apparatus can indicate that access point apparatus has been successfully transmitted caching downlink data frame, and then promote the reliable of data interaction Property, for multicast or the caching downlink data frame of broadcast, in the prior art, site apparatus can't feed back whether It is properly received the caching downlink data frame of multicast or broadcast, communication reliability is not high.
Wherein, by the way that the when a length of caching downlink data frame of the duration field (duration) of resource allocation message frame is arranged Transmission duration, the transmission duration of resource allocation message frame, the duration of twice of default interframe gap duration and confirmation message frame The sum of, so that access point apparatus total duration according to needed for the determining transmission for carrying out caching downlink data frame of duration field, reduces The generation of data collision.
In addition, default interframe gap duration (Short Inter-Frame Space, abbreviation SIFS) be two message frames it Between transmission time interval, chronomere is a millisecond rank, and such as default interframe gap duration can be set to 50ms, 100ms With 150ms etc..
In any of the above-described technical solution, it is preferable that the communication means of WLAN further include: parsing instruction information When for second value, principal communication interface is not waken up；When parsing instruction information is the first value, indicate site apparatus according to contention-free period Parameter receives caching downlink data frame；After receiving multicast wakeup message frame, wakes up principal communication interface and receive access point apparatus The beacon frame of the specified number of broadcast transmission includes contention-free period parameter in beacon frame.
In the technical scheme, by the way that when indicating that information is set as second value, instruction receives multicast wakeup message frame Site apparatus not awakening device principal communication interface, can further reduce the power consumption under WUR mode, wherein instruction information setting When for second value, instruction site apparatus needs to receive without caching downlink data frame, and the purpose for sending above-mentioned wakeup message frame can be with It is to carry out time synchronization between access point apparatus and the secondary communication interface of site apparatus.
Wherein, second value can be preset as one binary " 0 ".
In any of the above-described technical solution, it is preferable that the communication means of WLAN further include: called out receiving multicast It wakes up after message frame and wake-up principal communication interface, received beacon frame, prefixed time interval is that access point apparatus transmission multicast wake-up disappears Frame is ceased to the time interval generated between first frame beacon frame.
In the technical scheme, the beacon frame generated after waking up principal communication interface, can carry competing cycle parameter or non- Competing cycle parameter is further reduced with indicating the back off time of the principal communication interface access principal communication channel of site apparatus The generation of data collision, meanwhile, before receiving first frame beacon frame, it is not necessary to principal communication interface is waken up, to extend WUR mode Duration reduces power consumption.
In any of the above-described technical solution, it is preferable that the instruction information of data cached frame is write in the form of information element Enter.
In the technical scheme, referred to by the form write-in with information element (Information Element, abbreviation IE) Show information, is conducive to the compatibility for improving the communication plan of the application, for example, the reserved bit write-in in wakeup message frame Indicate information.
A kind of technical solution of the third aspect of the present invention, it is also proposed that communication device of WLAN, comprising: communication Unit, for generating and sending multicast wakeup message frame, multicast wakeup message frame includes the instruction for receiving caching downlink data frame Information, the site apparatus that instruction information is used to indicate reception multicast wakeup message frame wake up its principal communication interface to receive under caching Row data frame；Indicating unit is used to indicate site apparatus and is receiving wakeup message frame when indicating that information is set as the first value After prefixed time interval, wakes up principal communication interface and receive resource allocation message frame and access corresponding principal communication channel, it is main logical Letter channel is used to carry the wireless carrier of transmission buffer downlink data frame.
In the technical scheme, by generating and sending multicast wakeup message frame, and when its instruction information carried is When the first value, site apparatus is indicated after prefixed time interval, wakes up principal communication interface, and access according to resource allocation message frame Principal communication channel advantageously reduces the power consumption of site apparatus, and can wake up in time master before receiving caching downlink data frame Communication interface and access principal communication channel, reduce the generation of data collision, while improving data throughout and frequency spectrum benefit With rate.
Wherein, prefixed time interval refer to site apparatus receive wakeup message frame to wake up principal communication interface between when Between it is poor, for example, it is main logical according to the access of resource allocation message frame to wake up principal communication interface after the 500ms for receiving wakeup message frame Believe channel, then prefixed time interval is 500ms, it avoids and directly wakes up principal communication interface after receiving wakeup message frame, Power consumption is reduced by reducing the stand-by time of principal communication interface, creates a further reduction the power consumption under WUR mode.In addition, Prefixed time interval can be included in broadcast wakeup message frame with the form of information element IE (Information Element) When being sent to one section that site apparatus or site apparatus and access point apparatus have just consulted before entering WUR mode Between length, wherein WUR mode refers to that the principal communication interface of communication equipment enters dormant state, at the secondary communication interface of communication equipment In wake states or periodical dormant state.
In addition, according to AID, (Association ID is closed access point apparatus for the caching downlink data frame of multicast Connection mark) to determine, whether associated either site equipment has had caching downlink data frame to be sent to field.For example, for one A multicast wakeup message frame, it may be comprising needing to wake up 5 site apparatus, and site apparatus is closed with access point apparatus AID is had been obtained for during connection, then whether has the downlink data frame of caching, example with a segment information element representation site apparatus Such as with 8 bits or 16 bits, one of bit is corresponding to a site apparatus STA, entire information element Composition mapped according to the size of AID and the height of bit, for example: the AID of site apparatus STA1 be 3, site apparatus The AID of STA2 is 5, and the AID of site apparatus STA3 is 9, and the AID of site apparatus STA4 is 7, then information element is " 1111 " expression Highest order corresponds to site apparatus STA3, and lowest order corresponds to site apparatus STA1, and its corresponding position can site apparatus STA into It is just had determined that before entering WUR mode.
And first value can be preset as one binary " 1 ".
In the above-mentioned technical solutions, it is preferable that communication unit is also used to: receiving station equipment is in response to caching downlink data Frame feedback confirmation message frame, wherein the duration field of resource allocation message frame when it is a length of caching downlink data frame transmission The sum of duration, the transmission duration of resource allocation message frame, twice of default interframe gap duration and the duration of confirmation message frame.
In the technical scheme, by receiving station equipment in response to the confirmation message frame of caching downlink data frame feedback (i.e. ACK frame) can determine and be successfully transmitted caching downlink data frame, and then promote the reliability of data interaction, especially for For multicast or the caching downlink data frame of broadcast, in the prior art, site apparatus can't feed back whether be properly received multicast Or the caching downlink data frame of broadcast, communication reliability be not high.
Wherein, by the way that the when a length of caching downlink data frame of the duration field (duration) of resource allocation message frame is arranged Transmission duration, the transmission duration of resource allocation message frame, the duration of twice of default interframe gap duration and confirmation message frame The sum of, so that access point apparatus total duration according to needed for the determining transmission for carrying out caching downlink data frame of duration field, reduces The generation of data collision.
In addition, default interframe gap duration (Short Inter-Frame Space, abbreviation SIFS) be two message frames it Between transmission time interval, chronomere is a millisecond rank, and such as default interframe gap duration can be set to 50ms, 100ms With 150ms etc..
In any of the above-described technical solution, it is preferable that when indicating that information is set as second value, indicating unit is also used In: the site apparatus of instruction multicast wakeup message frame does not wake up its principal communication interface.
In the technical scheme, by the way that when indicating that information is set as second value, instruction receives multicast wakeup message frame Site apparatus not awakening device principal communication interface, can further reduce the power consumption under WUR mode, wherein instruction information setting When for second value, instruction site apparatus needs to receive without caching downlink data frame, and the purpose for sending above-mentioned wakeup message frame can be with It is to carry out time synchronization between access point apparatus and the secondary communication interface of site apparatus.
Wherein, second value can be preset as one binary " 0 ".
In any of the above-described technical solution, it is preferable that communication unit is also used to: sending multicast wakeup message frame and calling out It wakes up after principal communication interface, generates and sends beacon frame, prefixed time interval is to send multicast wakeup message frame to generating first frame Time interval between beacon frame.
In the technical scheme, the beacon frame generated after waking up principal communication interface, can carry competing cycle parameter or non- Competing cycle parameter is further reduced with indicating the back off time of the principal communication interface access principal communication channel of site apparatus The generation of data collision, meanwhile, before receiving first frame beacon frame, it is not necessary to principal communication interface is waken up, to extend WUR mode Duration reduces power consumption.
A kind of technical solution of the fourth aspect of the present invention, it is also proposed that communication device of WLAN, comprising: communication Unit, for receiving multicast wakeup message frame, multicast wakeup message frame includes the instruction information for receiving caching downlink data frame；Solution Unit is analysed, when indicating that information is the first value for parsing, after the prefixed time interval for receiving wakeup message frame, wakes up principal communication Interface；Communication unit is also used to: being received resource allocation message frame and is accessed the principal communication channel of access point apparatus distribution, principal communication Channel is used to carry the wireless carrier of transmission buffer downlink data frame.
In the technical scheme, by receiving multicast wakeup message frame, and when its instruction information carried is the first value When, site apparatus is indicated after prefixed time interval, wakes up principal communication interface, and principal communication is accessed according to resource allocation message frame Channel advantageously reduces the power consumption of site apparatus, and can wake up in time principal communication before receiving caching downlink data frame and connect Mouth and access principal communication channel, reduce the generation of data collision, while improving data throughout and the availability of frequency spectrum.
Wherein, prefixed time interval refer to site apparatus receive wakeup message frame to wake up principal communication interface between when Between it is poor, for example, it is main logical according to the access of resource allocation message frame to wake up principal communication interface after the 500ms for receiving wakeup message frame Believe channel, then prefixed time interval is 500ms, it avoids and directly wakes up principal communication interface after receiving wakeup message frame, Power consumption is reduced by reducing the stand-by time of principal communication interface, creates a further reduction the power consumption under WUR mode.In addition, Prefixed time interval can be included in broadcast wakeup message frame with the form of information element IE (Information Element) When being sent to one section that site apparatus or site apparatus and access point apparatus have just consulted before entering WUR mode Between length, wherein WUR mode refers to that the principal communication interface of communication equipment enters dormant state, at the secondary communication interface of communication equipment In wake states or periodical dormant state.
In addition, according to AID, (Association ID is closed access point apparatus for the caching downlink data frame of multicast Connection mark) to determine, whether associated either site equipment has had caching downlink data frame to be sent to field.For example, for one A multicast wakeup message frame, it may be comprising needing to wake up 5 site apparatus, and site apparatus is closed with access point apparatus AID is had been obtained for during connection, then whether has the downlink data frame of caching, example with a segment information element representation site apparatus Such as with 8 bits or 16 bits, one of bit is corresponding to a site apparatus STA, entire information element Composition mapped according to the size of AID and the height of bit, for example: the AID of site apparatus STA1 be 3, site apparatus The AID of STA2 is 5, and the AID of site apparatus STA3 is 9, and the AID of site apparatus STA4 is 7, then information element is " 1111 " expression Highest order corresponds to site apparatus STA3, and lowest order corresponds to site apparatus STA1, and its corresponding position can site apparatus STA into It is just had determined that before entering WUR mode.
And first value can be preset as one binary " 1 ".
In any of the above-described technical solution, it is preferable that communication unit is also used to: receiving based on principal communication transmission Cache downlink data frame, and to access point apparatus send confirmation message frame, wherein the duration field of resource allocation message frame when A length of caching transmission duration of downlink data frame, the transmission duration of resource allocation message frame, two default interframe gap durations and The sum of the duration of confirmation message frame.
In the technical scheme, site apparatus is in response to caching downlink data frame feeding back confirmation message frame (i.e. ACK frame) extremely Access point apparatus can indicate that access point apparatus has been successfully transmitted caching downlink data frame, and then promote the reliable of data interaction Property, for multicast or the caching downlink data frame of broadcast, in the prior art, site apparatus can't feed back whether It is properly received the caching downlink data frame of multicast or broadcast, communication reliability is not high.
Wherein, by the way that the when a length of caching downlink data frame of the duration field (duration) of resource allocation message frame is arranged Transmission duration, the transmission duration of resource allocation message frame, the duration of twice of default interframe gap duration and confirmation message frame The sum of, so that access point apparatus total duration according to needed for the determining transmission for carrying out caching downlink data frame of duration field, reduces The generation of data collision.
In addition, default interframe gap duration (Short Inter-Frame Space, abbreviation SIFS) be two message frames it Between transmission time interval, chronomere is a millisecond rank, and such as default interframe gap duration can be set to 50ms, 100ms With 150ms etc..
In any of the above-described technical solution, it is preferable that resolution unit is also used to: when parsing instruction information is second value, Principal communication interface is not waken up；Resolution unit is also used to: when parsing instruction information is the first value, indicating site apparatus according to non-competing Cycle parameter receives caching downlink data frame；Communication unit is also used to: after receiving multicast wakeup message frame, being waken up principal communication and is connect Mouthful and receive access point apparatus broadcast transmission specified number beacon frame, include contention-free period parameter in beacon frame.
In the technical scheme, by the way that when indicating that information is set as second value, instruction receives multicast wakeup message frame Site apparatus not awakening device principal communication interface, can further reduce the power consumption under WUR mode, wherein instruction information setting When for second value, instruction site apparatus needs to receive without caching downlink data frame, and the purpose for sending above-mentioned wakeup message frame can be with It is to carry out time synchronization between access point apparatus and the secondary communication interface of site apparatus.
Wherein, second value can be preset as one binary " 0 ".
In any of the above-described technical solution, it is preferable that communication unit is also used to: receiving multicast wakeup message frame and calling out It wakes up after principal communication interface, received beacon frame, prefixed time interval is that access point apparatus sends multicast wakeup message frame to generating the Time interval between one frame beacon frame.
In the technical scheme, the beacon frame generated after waking up principal communication interface, can carry competing cycle parameter or non- Competing cycle parameter is further reduced with indicating the back off time of the principal communication interface access principal communication channel of site apparatus The generation of data collision, meanwhile, before receiving first frame beacon frame, it is not necessary to principal communication interface is waken up, to extend WUR mode Duration reduces power consumption.
In any of the above-described technical solution, it is preferable that the instruction information of data cached frame is write in the form of information element Enter.
In the technical scheme, referred to by the form write-in with information element (Information Element, abbreviation IE) Show information, is conducive to the compatibility for improving the communication plan of the application, for example, the reserved bit write-in in wakeup message frame Indicate information.
The technical solution of the fifth aspect of the present invention, it is also proposed that a kind of access point apparatus, comprising: such as appointing for the third aspect The communication device of the WLAN of one technical solution.
The technical solution of the sixth aspect of the present invention, it is also proposed that a kind of site apparatus, comprising: such as any of fourth aspect The communication device of the WLAN of technical solution.
Additional aspect and advantage of the invention will provide in following description section, will partially become from the following description Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures Obviously and it is readily appreciated that, in which:
Fig. 1 shows the schematic flow diagram of the communication means of WLAN according to an embodiment of the invention；
Fig. 2 shows the schematic flow diagrams of the communication means of WLAN according to an embodiment of the invention；
Fig. 3 shows the schematic block diagram of the communication device of WLAN according to an embodiment of the invention；
Fig. 4 shows the schematic block diagram of the communication device of WLAN according to an embodiment of the invention；
Fig. 5 shows the schematic block diagram of access point apparatus according to an embodiment of the invention；
Fig. 6 shows the schematic block diagram of site apparatus according to an embodiment of the invention；
Fig. 7 shows the communication interaction schematic diagram of WLAN according to an embodiment of the invention.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below Specific embodiment limitation.
Fig. 1 shows the schematic flow diagram of the communication means of WLAN according to an embodiment of the invention.
As shown in Figure 1, the communication means of WLAN according to an embodiment of the invention, comprising: step S102, Multicast wakeup message frame is generated and sent, multicast wakeup message frame includes the instruction information for receiving caching downlink data frame, instruction The site apparatus that information is used to indicate reception multicast wakeup message frame wakes up its principal communication interface to receive caching downlink data frame； Step S104, when indicating that information is set as the first value, instruction site apparatus is in the prefixed time interval for receiving wakeup message frame Afterwards, it wakes up principal communication interface and receives resource allocation message frame and access corresponding principal communication channel, principal communication channel is for holding Carry the wireless carrier of transmission buffer downlink data frame.
In the technical scheme, by generating and sending multicast wakeup message frame, and when its instruction information carried is When the first value, site apparatus is indicated after prefixed time interval, wakes up principal communication interface, and access according to resource allocation message frame Principal communication channel advantageously reduces the power consumption of site apparatus, and can wake up in time master before receiving caching downlink data frame Communication interface and access principal communication channel, reduce the generation of data collision, while improving data throughout and frequency spectrum benefit With rate.
Wherein, prefixed time interval refer to site apparatus receive wakeup message frame to wake up principal communication interface between when Between it is poor, for example, it is main logical according to the access of resource allocation message frame to wake up principal communication interface after the 500ms for receiving wakeup message frame Believe channel, then prefixed time interval is 500ms, it avoids and directly wakes up principal communication interface after receiving wakeup message frame, Power consumption is reduced by reducing the stand-by time of principal communication interface, creates a further reduction the power consumption under WUR mode.In addition, Prefixed time interval can be included in broadcast wakeup message frame with the form of information element IE (Information Element) When being sent to one section that site apparatus or site apparatus and access point apparatus have just consulted before entering WUR mode Between length, wherein WUR mode refers to that the principal communication interface of communication equipment enters dormant state, at the secondary communication interface of communication equipment In wake states or periodical dormant state.
In addition, according to AID, (Association ID is closed access point apparatus for the caching downlink data frame of multicast Connection mark) to determine, whether associated either site equipment has had caching downlink data frame to be sent to field.For example, for one A multicast wakeup message frame, it may be comprising needing to wake up 5 site apparatus, and site apparatus is closed with access point apparatus AID is had been obtained for during connection, then whether has the downlink data frame of caching, example with a segment information element representation site apparatus Such as with 8 bits or 16 bits, one of bit is corresponding to a site apparatus STA, entire information element Composition mapped according to the size of AID and the height of bit, for example: the AID of site apparatus STA1 be 3, site apparatus The AID of STA2 is 5, and the AID of site apparatus STA3 is 9, and the AID of site apparatus STA4 is 7, then information element is " 1111 " expression Highest order corresponds to site apparatus STA3, and lowest order corresponds to site apparatus STA1, and its corresponding position can site apparatus STA into It is just had determined that before entering WUR mode.
And first value can be preset as one binary " 1 ".
In the above-mentioned technical solutions, it is preferable that the communication means of WLAN further include: receiving station equipment in response to Cache the confirmation message frame of downlink data frame feedback, wherein the when a length of caching downlink of the duration field of resource allocation message frame The transmission duration of data frame, the transmission duration of resource allocation message frame, twice and confirmation message frame for presetting interframe gap duration The sum of duration.
In the technical scheme, by receiving station equipment in response to the confirmation message frame of caching downlink data frame feedback (i.e. ACK frame) can determine and be successfully transmitted caching downlink data frame, and then promote the reliability of data interaction, especially for For multicast or the caching downlink data frame of broadcast, in the prior art, site apparatus can't feed back whether be properly received multicast Or the caching downlink data frame of broadcast, communication reliability be not high.
Wherein, by the way that the when a length of caching downlink data frame of the duration field (duration) of resource allocation message frame is arranged Transmission duration, the transmission duration of resource allocation message frame, the duration of twice of default interframe gap duration and confirmation message frame The sum of, so that access point apparatus total duration according to needed for the determining transmission for carrying out caching downlink data frame of duration field, reduces The generation of data collision.
In addition, default interframe gap duration (Short Inter-Frame Space, abbreviation SIFS) be two message frames it Between transmission time interval, chronomere is a millisecond rank, and such as default interframe gap duration can be set to 50ms, 100ms With 150ms etc..
In any of the above-described technical solution, it is preferable that the communication means of WLAN further include: when instruction information is set When being set to second value, the site apparatus that instruction receives multicast wakeup message frame does not wake up its principal communication interface.
In the technical scheme, by the way that when indicating that information is set as second value, instruction receives multicast wakeup message frame Site apparatus not awakening device principal communication interface, can further reduce the power consumption under WUR mode, wherein instruction information setting When for second value, instruction site apparatus needs to receive without caching downlink data frame, and the purpose for sending above-mentioned wakeup message frame can be with It is to carry out time synchronization between access point apparatus and the secondary communication interface of site apparatus.
Wherein, second value can be preset as one binary " 0 ".
In any of the above-described technical solution, it is preferable that the communication means of WLAN further include: called out sending multicast It wakes up after message frame and wake-up principal communication interface, generates and sends beacon frame, prefixed time interval is to send multicast wakeup message frame To the time interval generated between first frame beacon frame.
In the technical scheme, the beacon frame generated after waking up principal communication interface, can carry competing cycle parameter or non- Competing cycle parameter is further reduced with indicating the back off time of the principal communication interface access principal communication channel of site apparatus The generation of data collision, meanwhile, before receiving first frame beacon frame, it is not necessary to principal communication interface is waken up, to extend WUR mode Duration reduces power consumption.
Fig. 2 shows the schematic flow diagrams of the communication means of WLAN according to an embodiment of the invention.
As shown in Fig. 2, the communication means of WLAN according to an embodiment of the invention, comprising: step S202, Multicast wakeup message frame is received, multicast wakeup message frame includes the instruction information for receiving caching downlink data frame, and instruction information is used Wake-up principal communication interface is connect in instruction to receive caching downlink data frame；Step S204, when parsing instruction information is the first value, After the prefixed time interval for receiving wakeup message frame, principal communication interface is waken up；Step S206 receives resource allocation message frame and connects Enter the principal communication channel of access point apparatus distribution, principal communication channel is used to carry the wireless carrier of transmission buffer downlink data frame.
In the technical scheme, by receiving multicast wakeup message frame, and when its instruction information carried is the first value When, site apparatus is indicated after prefixed time interval, wakes up principal communication interface, and principal communication is accessed according to resource allocation message frame Channel advantageously reduces the power consumption of site apparatus, and can wake up in time principal communication before receiving caching downlink data frame and connect Mouth and access principal communication channel, reduce the generation of data collision, while improving data throughout and the availability of frequency spectrum.
Wherein, prefixed time interval refer to site apparatus receive wakeup message frame to wake up principal communication interface between when Between it is poor, for example, it is main logical according to the access of resource allocation message frame to wake up principal communication interface after the 500ms for receiving wakeup message frame Believe channel, then prefixed time interval is 500ms, it avoids and directly wakes up principal communication interface after receiving wakeup message frame, Power consumption is reduced by reducing the stand-by time of principal communication interface, creates a further reduction the power consumption under WUR mode.In addition, Prefixed time interval can be included in broadcast wakeup message frame with the form of information element IE (Information Element) When being sent to one section that site apparatus or site apparatus and access point apparatus have just consulted before entering WUR mode Between length, wherein WUR mode refers to that the principal communication interface of communication equipment enters dormant state, at the secondary communication interface of communication equipment In wake states or periodical dormant state.
In addition, according to AID, (Association ID is closed access point apparatus for the caching downlink data frame of multicast Connection mark) to determine, whether associated either site equipment has had caching downlink data frame to be sent to field.For example, for one A multicast wakeup message frame, it may be comprising needing to wake up 5 site apparatus, and site apparatus is closed with access point apparatus AID is had been obtained for during connection, then whether has the downlink data frame of caching, example with a segment information element representation site apparatus Such as with 8 bits or 16 bits, one of bit is corresponding to a site apparatus STA, entire information element Composition mapped according to the size of AID and the height of bit, for example: the AID of site apparatus STA1 be 3, site apparatus The AID of STA2 is 5, and the AID of site apparatus STA3 is 9, and the AID of site apparatus STA4 is 7, then information element is " 1111 " expression Highest order corresponds to site apparatus STA3, and lowest order corresponds to site apparatus STA1, and its corresponding position can site apparatus STA into It is just had determined that before entering WUR mode.
And first value can be preset as one binary " 1 ".
In any of the above-described technical solution, it is preferable that the communication means of WLAN further include: receive based on main logical Believe the caching downlink data frame of transmission, and send confirmation message frame to access point apparatus, wherein resource allocation message frame Duration field when it is a length of caching downlink data frame transmission duration, the transmission duration of resource allocation message frame, two default frames Between the sum of gap duration and the duration of confirmation message frame.
In the technical scheme, site apparatus is in response to caching downlink data frame feeding back confirmation message frame (i.e. ACK frame) extremely Access point apparatus can indicate that access point apparatus has been successfully transmitted caching downlink data frame, and then promote the reliable of data interaction Property, for multicast or the caching downlink data frame of broadcast, in the prior art, site apparatus can't feed back whether It is properly received the caching downlink data frame of multicast or broadcast, communication reliability is not high.
Wherein, by the way that the when a length of caching downlink data frame of the duration field (duration) of resource allocation message frame is arranged Transmission duration, the transmission duration of resource allocation message frame, the duration of twice of default interframe gap duration and confirmation message frame The sum of, so that access point apparatus total duration according to needed for the determining transmission for carrying out caching downlink data frame of duration field, reduces The generation of data collision.
In addition, default interframe gap duration (Short Inter-Frame Space, abbreviation SIFS) be two message frames it Between transmission time interval, chronomere is a millisecond rank, and such as default interframe gap duration can be set to 50ms, 100ms With 150ms etc..
In any of the above-described technical solution, it is preferable that the communication means of WLAN further include: parsing instruction information When for second value, principal communication interface is not waken up；When parsing instruction information is the first value, indicate site apparatus according to contention-free period Parameter receives caching downlink data frame；After receiving multicast wakeup message frame, wakes up principal communication interface and receive access point apparatus The beacon frame of the specified number of broadcast transmission includes contention-free period parameter in beacon frame.
In the technical scheme, by the way that when indicating that information is set as second value, instruction receives multicast wakeup message frame Site apparatus not awakening device principal communication interface, can further reduce the power consumption under WUR mode, wherein instruction information setting When for second value, instruction site apparatus needs to receive without caching downlink data frame, and the purpose for sending above-mentioned wakeup message frame can be with It is to carry out time synchronization between access point apparatus and the secondary communication interface of site apparatus.
Wherein, second value can be preset as one binary " 0 ".
In any of the above-described technical solution, it is preferable that the communication means of WLAN further include: called out receiving multicast It wakes up after message frame and wake-up principal communication interface, received beacon frame, prefixed time interval is that access point apparatus transmission multicast wake-up disappears Frame is ceased to the time interval generated between first frame beacon frame.
In the technical scheme, the beacon frame generated after waking up principal communication interface, can carry competing cycle parameter or non- Competing cycle parameter is further reduced with indicating the back off time of the principal communication interface access principal communication channel of site apparatus The generation of data collision, meanwhile, before receiving first frame beacon frame, it is not necessary to principal communication interface is waken up, to extend WUR mode Duration reduces power consumption.
In any of the above-described technical solution, it is preferable that the instruction information of data cached frame is write in the form of information element Enter.
In the technical scheme, referred to by the form write-in with information element (Information Element, abbreviation IE) Show information, is conducive to the compatibility for improving the communication plan of the application, for example, the reserved bit write-in in wakeup message frame Indicate information.
Fig. 3 shows the schematic block diagram of the communication device of WLAN according to an embodiment of the invention.
As shown in figure 3, the communication device 300 of WLAN according to an embodiment of the invention, comprising: communication unit Member 302, for generating and sending multicast wakeup message frame, multicast wakeup message frame includes the instruction for receiving caching downlink data frame Information, the site apparatus that instruction information is used to indicate reception multicast wakeup message frame wake up its principal communication interface to receive under caching Row data frame；Indicating unit 304 is used to indicate site apparatus and is receiving wakeup message when indicating that information is set as the first value After the prefixed time interval of frame, wakes up principal communication interface and receives resource allocation message frame and access corresponding principal communication channel, Principal communication channel is used to carry the wireless carrier of transmission buffer downlink data frame.
In the technical scheme, by generating and sending multicast wakeup message frame, and when its instruction information carried is When the first value, site apparatus is indicated after prefixed time interval, wakes up principal communication interface, and access according to resource allocation message frame Principal communication channel advantageously reduces the power consumption of site apparatus, and can wake up in time master before receiving caching downlink data frame Communication interface and access principal communication channel, reduce the generation of data collision, while improving data throughout and frequency spectrum benefit With rate.
Wherein, prefixed time interval refer to site apparatus receive wakeup message frame to wake up principal communication interface between when Between it is poor, for example, it is main logical according to the access of resource allocation message frame to wake up principal communication interface after the 500ms for receiving wakeup message frame Believe channel, then prefixed time interval is 500ms, it avoids and directly wakes up principal communication interface after receiving wakeup message frame, Power consumption is reduced by reducing the stand-by time of principal communication interface, creates a further reduction the power consumption under WUR mode.In addition, Prefixed time interval can be included in broadcast wakeup message frame with the form of information element IE (Information Element) When being sent to one section that site apparatus or site apparatus and access point apparatus have just consulted before entering WUR mode Between length, wherein WUR mode refers to that the principal communication interface of communication equipment enters dormant state, at the secondary communication interface of communication equipment In wake states or periodical dormant state.
In addition, according to AID, (Association ID is closed access point apparatus for the caching downlink data frame of multicast Connection mark) to determine, whether associated either site equipment has had caching downlink data frame to be sent to field.For example, for one A multicast wakeup message frame, it may be comprising needing to wake up 5 site apparatus, and site apparatus is closed with access point apparatus AID is had been obtained for during connection, then whether has the downlink data frame of caching, example with a segment information element representation site apparatus Such as with 8 bits or 16 bits, one of bit is corresponding to a site apparatus STA, entire information element Composition mapped according to the size of AID and the height of bit, for example: the AID of site apparatus STA1 be 3, site apparatus The AID of STA2 is 5, and the AID of site apparatus STA3 is 9, and the AID of site apparatus STA4 is 7, then information element is " 1111 " expression Highest order corresponds to site apparatus STA3, and lowest order corresponds to site apparatus STA1, and its corresponding position can site apparatus STA into It is just had determined that before entering WUR mode.
And first value can be preset as one binary " 1 ".
In the above-mentioned technical solutions, it is preferable that communication unit 302 is also used to: receiving station equipment is in response to caching downlink The confirmation message frame of data frame feedback, wherein the when a length of caching downlink data frame of the duration field of resource allocation message frame Transmit duration, the transmission duration of resource allocation message frame, preset twice of interframe gap duration and the duration of confirmation message frame it With.
In the technical scheme, by receiving station equipment in response to the confirmation message frame of caching downlink data frame feedback (i.e. ACK frame) can determine and be successfully transmitted caching downlink data frame, and then promote the reliability of data interaction, especially for For multicast or the caching downlink data frame of broadcast, in the prior art, site apparatus can't feed back whether be properly received multicast Or the caching downlink data frame of broadcast, communication reliability be not high.
Wherein, by the way that the when a length of caching downlink data frame of the duration field (duration) of resource allocation message frame is arranged Transmission duration, the transmission duration of resource allocation message frame, the duration of twice of default interframe gap duration and confirmation message frame The sum of, so that access point apparatus total duration according to needed for the determining transmission for carrying out caching downlink data frame of duration field, reduces The generation of data collision.
In addition, default interframe gap duration (Short Inter-Frame Space, abbreviation SIFS) be two message frames it Between transmission time interval, chronomere is a millisecond rank, and such as default interframe gap duration can be set to 50ms, 100ms With 150ms etc..
In any of the above-described technical solution, it is preferable that when indicating that information is set as second value, indicating unit 304 is also For: the site apparatus of instruction multicast wakeup message frame does not wake up its principal communication interface.
In the technical scheme, by the way that when indicating that information is set as second value, instruction receives multicast wakeup message frame Site apparatus not awakening device principal communication interface, can further reduce the power consumption under WUR mode, wherein instruction information setting When for second value, instruction site apparatus needs to receive without caching downlink data frame, and the purpose for sending above-mentioned wakeup message frame can be with It is to carry out time synchronization between access point apparatus and the secondary communication interface of site apparatus.
Wherein, second value can be preset as one binary " 0 ".
In any of the above-described technical solution, it is preferable that communication unit 302 is also used to: sending multicast wakeup message frame And after waking up principal communication interface, beacon frame is generated and sent, prefixed time interval is to send multicast wakeup message frame to generating the Time interval between one frame beacon frame.
In the technical scheme, the beacon frame generated after waking up principal communication interface, can carry competing cycle parameter or non- Competing cycle parameter is further reduced with indicating the back off time of the principal communication interface access principal communication channel of site apparatus The generation of data collision, meanwhile, before receiving first frame beacon frame, it is not necessary to principal communication interface is waken up, to extend WUR mode Duration reduces power consumption.
Fig. 4 shows the schematic block diagram of the communication device of WLAN according to an embodiment of the invention.
As shown in figure 4, the communication device 400 of WLAN according to an embodiment of the invention, comprising: communication unit Member 402, for receiving multicast wakeup message frame, multicast wakeup message frame includes the instruction information for receiving caching downlink data frame； Resolution unit 404 when indicating that information is the first value for parsing, after the prefixed time interval for receiving wakeup message frame, wakes up Principal communication interface；Communication unit 402 is also used to: being received resource allocation message frame and is accessed the principal communication letter of access point apparatus distribution Road, principal communication channel are used to carry the wireless carrier of transmission buffer downlink data frame.
In the technical scheme, by receiving multicast wakeup message frame, and when its instruction information carried is the first value When, site apparatus is indicated after prefixed time interval, wakes up principal communication interface, and principal communication is accessed according to resource allocation message frame Channel advantageously reduces the power consumption of site apparatus, and can wake up in time principal communication before receiving caching downlink data frame and connect Mouth and access principal communication channel, reduce the generation of data collision, while improving data throughout and the availability of frequency spectrum.
Wherein, prefixed time interval refer to site apparatus receive wakeup message frame to wake up principal communication interface between when Between it is poor, for example, it is main logical according to the access of resource allocation message frame to wake up principal communication interface after the 500ms for receiving wakeup message frame Believe channel, then prefixed time interval is 500ms, it avoids and directly wakes up principal communication interface after receiving wakeup message frame, Power consumption is reduced by reducing the stand-by time of principal communication interface, creates a further reduction the power consumption under WUR mode.In addition, Prefixed time interval can be included in broadcast wakeup message frame with the form of information element IE (Information Element) When being sent to one section that site apparatus or site apparatus and access point apparatus have just consulted before entering WUR mode Between length, wherein WUR mode refers to that the principal communication interface of communication equipment enters dormant state, at the secondary communication interface of communication equipment In wake states or periodical dormant state.
In addition, according to AID, (Association ID is closed access point apparatus for the caching downlink data frame of multicast Connection mark) to determine, whether associated either site equipment has had caching downlink data frame to be sent to field.For example, for one A multicast wakeup message frame, it may be comprising needing to wake up 5 site apparatus, and site apparatus is closed with access point apparatus AID is had been obtained for during connection, then whether has the downlink data frame of caching, example with a segment information element representation site apparatus Such as with 8 bits or 16 bits, one of bit is corresponding to a site apparatus STA, entire information element Composition mapped according to the size of AID and the height of bit, for example: the AID of site apparatus STA1 be 3, site apparatus The AID of STA2 is 5, and the AID of site apparatus STA3 is 9, and the AID of site apparatus STA4 is 7, then information element is " 1111 " expression Highest order corresponds to site apparatus STA3, and lowest order corresponds to site apparatus STA1, and its corresponding position can site apparatus STA into It is just had determined that before entering WUR mode.
And first value can be preset as one binary " 1 ".
In any of the above-described technical solution, it is preferable that communication unit 402 is also used to: receiving and passed based on principal communication channel Defeated caching downlink data frame, and confirmation message frame is sent to access point apparatus, wherein the duration field of resource allocation message frame When it is a length of caching downlink data frame transmission duration, the transmission duration of resource allocation message frame, two default interframe gaps when Long and confirmation message frame the sum of duration.
In the technical scheme, site apparatus is in response to caching downlink data frame feeding back confirmation message frame (i.e. ACK frame) extremely Access point apparatus can indicate that access point apparatus has been successfully transmitted caching downlink data frame, and then promote the reliable of data interaction Property, for multicast or the caching downlink data frame of broadcast, in the prior art, site apparatus can't feed back whether It is properly received the caching downlink data frame of multicast or broadcast, communication reliability is not high.
Wherein, by the way that the when a length of caching downlink data frame of the duration field (duration) of resource allocation message frame is arranged Transmission duration, the transmission duration of resource allocation message frame, the duration of twice of default interframe gap duration and confirmation message frame The sum of, so that access point apparatus total duration according to needed for the determining transmission for carrying out caching downlink data frame of duration field, reduces The generation of data collision.
In addition, default interframe gap duration (Short Inter-Frame Space, abbreviation SIFS) be two message frames it Between transmission time interval, chronomere is a millisecond rank, and such as default interframe gap duration can be set to 50ms, 100ms With 150ms etc..
In any of the above-described technical solution, it is preferable that resolution unit 404 is also used to: parsing instruction information is second value When, principal communication interface is not waken up；Resolution unit 404 is also used to: parsing instruction information be the first value when, instruction site apparatus according to Contention-free period parameter receives caching downlink data frame；Communication unit 402 is also used to: after receiving multicast wakeup message frame, being called out Wake up principal communication interface and receive access point apparatus broadcast transmission specified number beacon frame, include contention-free period in beacon frame Parameter.
In the technical scheme, by the way that when indicating that information is set as second value, instruction receives multicast wakeup message frame Site apparatus not awakening device principal communication interface, can further reduce the power consumption under WUR mode, wherein instruction information setting When for second value, instruction site apparatus needs to receive without caching downlink data frame, and the purpose for sending above-mentioned wakeup message frame can be with It is to carry out time synchronization between access point apparatus and the secondary communication interface of site apparatus.
Wherein, second value can be preset as one binary " 0 ".
In any of the above-described technical solution, it is preferable that communication unit 402 is also used to: receiving multicast wakeup message frame And after waking up principal communication interface, received beacon frame, prefixed time interval is that access point apparatus sends multicast wakeup message frame to life At the time interval between first frame beacon frame.
In the technical scheme, the beacon frame generated after waking up principal communication interface, can carry competing cycle parameter or non- Competing cycle parameter is further reduced with indicating the back off time of the principal communication interface access principal communication channel of site apparatus The generation of data collision, meanwhile, before receiving first frame beacon frame, it is not necessary to principal communication interface is waken up, to extend WUR mode Duration reduces power consumption.
In any of the above-described technical solution, it is preferable that the instruction information of data cached frame is write in the form of information element Enter.
In the technical scheme, referred to by the form write-in with information element (Information Element, abbreviation IE) Show information, is conducive to the compatibility for improving the communication plan of the application, for example, the reserved bit write-in in wakeup message frame Indicate information.
Fig. 5 shows the schematic block diagram of access point apparatus according to an embodiment of the invention.
As shown in figure 5, access point apparatus 500 according to an embodiment of the invention, comprising: as shown in Figure 3 is wireless The communication device 300 of local area network.
Wherein, wherein the communication device 300 of above-mentioned WLAN can be compatible with or be integrated in be communicated with Wi-Fi The access point apparatus such as mobile phone, tablet computer, music player, navigation device and the router of module, above-mentioned indicating unit 304 It can be processor (CPU), controller (MCU), embedded microcontroller chip and the baseband processor etc. of above-mentioned communication device 300, Above-mentioned communication unit 302 can be antenna and carrier modulation block of above-mentioned communication device 300 etc..
Fig. 6 shows the schematic block diagram of site apparatus according to an embodiment of the invention.
As shown in fig. 6, site apparatus 600 according to an embodiment of the invention, comprising: wireless office as shown in Figure 4 The communication device 400 of domain net.
Wherein, wherein the communication device 400 of above-mentioned WLAN can be compatible with or be integrated in be communicated with Wi-Fi The access point apparatus such as mobile phone, tablet computer, music player, navigation device and the router of module, above-mentioned resolution unit 404 It can be processor (CPU), controller (MCU), embedded microcontroller chip and the baseband processor etc. of above-mentioned communication device 400, Above-mentioned communication unit 402 can be antenna and carrier modulation block of above-mentioned communication device 400 etc..
Fig. 7 shows the communication interaction schematic diagram of WLAN according to an embodiment of the invention.
As shown in fig. 7, principal communication interface suspend mode when site apparatus 600 is in WUR mode, secondary communication interface revival is secondary logical Letter interface can receive the wakeup message frame (unicast, multicast or broadcast) of the transmission of access point apparatus 500, in the instruction of wakeup message frame When information is set as the first value, secondary communication interface wakes up principal communication interface after prefixed time interval, at this point, access point apparatus 500 send resource distribution message frames (i.e. Trigger frame in Fig. 7, the when a length of Trigger frame transmission duration, slow of duration field Deposit downlink data frame transmission duration, the transmission of ACK frame the sum of duration and twice of SIFS), it is accessed in principal communication interface according to Trigger After principal communication channel, access point apparatus 500 sends caching downlink data frame to principal communication interface, and site apparatus 600 is receiving After all caching downlink data frames (unicast, multicast or broadcast), feeding back confirmation message frame (ACK frame) to access point apparatus 500.
Step in the method for the present invention can be sequentially adjusted, combined, and deleted according to actual needs.
Unit in apparatus of the present invention can be combined, divided, and deleted according to actual needs.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can It is completed with instructing relevant hardware by program, which can be stored in a computer readable storage medium, storage Medium include read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), programmable read only memory (Programmable Read-only Memory, PROM), erasable programmable is read-only deposits Reservoir (Erasable Programmable Read Only Memory, EPROM), disposable programmable read-only memory (One- Time Programmable Read-Only Memory, OTPROM), the electronics formula of erasing can make carbon copies read-only memory (Electrically-Erasable Programmable Read-Only Memory, EEPROM), CD-ROM (Compact Disc Read-Only Memory, CD-ROM) or other disc memories, magnetic disk storage, magnetic tape storage or can For carrying or any other computer-readable medium of storing data.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (20)

1. a kind of communication means of WLAN is suitable for access point apparatus, which is characterized in that the WLAN leads to Letter method includes:
Multicast wakeup message frame is generated and sent, the multicast wakeup message frame includes the instruction letter for receiving caching downlink data frame Breath, the instruction information, which is used to indicate, to be received the site apparatus of the multicast wakeup message frame and wakes up its principal communication interface to receive The caching downlink data frame；
When the instruction information is set as the first value, instruction site apparatus is between the preset time for receiving the wakeup message frame Every rear, wake up principal communication interface and simultaneously receive resource allocation message frame and access corresponding principal communication channel, the principal communication channel For carrying the wireless carrier for transmitting the caching downlink data frame.
2. the communication means of WLAN according to claim 1, which is characterized in that further include:
The confirmation message frame that the site apparatus is fed back in response to the caching downlink data frame is received,
Wherein, the when a length of caching transmission duration of downlink data frame, institute of the duration field of the resource allocation message frame State the sum of the transmission duration of resource allocation message frame, twice of default interframe gap duration and duration of the confirmation message frame.
3. the communication means of WLAN according to claim 1, which is characterized in that further include:
When the instruction information is set as second value, the site apparatus that instruction receives the multicast wakeup message frame is not called out It wakes up its described principal communication interface.
4. the communication means of WLAN according to claim 1, which is characterized in that further include:
After sending the multicast wakeup message frame and the wake-up principal communication interface, beacon frame is generated and sent,
The prefixed time interval is to send the multicast wakeup message frame to the time generated between beacon frame described in first frame Interval.
5. a kind of communication means of WLAN, be suitable for site apparatus, the site apparatus include principal communication interface and time Communication interface, when the principal communication interface is in suspend mode, the secondary communication interface can receive multicast under wake mode Wakeup message frame, which is characterized in that the communication means of the WLAN includes:
The multicast wakeup message frame is received, the multicast wakeup message frame includes the instruction letter for receiving caching downlink data frame Breath, the instruction information, which is used to indicate to connect, wakes up the principal communication interface to receive the caching downlink data frame；
When to parse the instruction information be the first value, after the prefixed time interval for receiving the wakeup message frame, described in wake-up Principal communication interface；
It receives resource allocation message frame and accesses the principal communication channel of access point apparatus distribution, the principal communication channel is for carrying Transmit the wireless carrier of the caching downlink data frame.
6. the communication means of WLAN according to claim 5, which is characterized in that further include:
The caching downlink data frame based on the principal communication transmission is received, and sends and confirms to described access point equipment Message frame,
Wherein, the when a length of caching transmission duration of downlink data frame, institute of the duration field of the resource allocation message frame State the sum of the transmission duration, two default interframe gap durations and the duration of the confirmation message frame of resource allocation message frame.
7. the communication means of WLAN according to claim 5, which is characterized in that further include:
Parse the instruction information be second value when, do not wake up the principal communication interface；
Parse the instruction information be first value when, indicate the site apparatus according to contention-free period parameter receive described in Cache downlink data frame；
After receiving the multicast wakeup message frame, wakes up the principal communication interface and receive the transmission of described access point device broadcasts Specified number beacon frame, include the contention-free period parameter in the beacon frame.
8. the communication means of WLAN according to claim 5, which is characterized in that further include:
After receiving the multicast wakeup message frame and the wake-up principal communication interface, received beacon frame,
The prefixed time interval is that described access point equipment sends letter described in the multicast wakeup message frame to generation first frame Mark the time interval between frame.
9. the communication means of WLAN according to any one of claim 1 to 8, which is characterized in that
The instruction information of the data cached frame is written in the form of information element.
10. a kind of communication device of WLAN is suitable for access point apparatus, which is characterized in that the WLAN Communication device includes:
Communication unit, for generating and sending multicast wakeup message frame, the multicast wakeup message frame includes to receive caching downlink The instruction information of data frame, the instruction information, which is used to indicate, to be received the site apparatus of the multicast wakeup message frame and wakes up its master Communication interface receives caching downlink data frame；
Indicating unit is used to indicate site apparatus and is receiving the wakeup message when the instruction information is set as the first value After the prefixed time interval of frame, wakes up principal communication interface and receives resource allocation message frame and access corresponding principal communication channel, The principal communication channel is used to carry the wireless carrier for transmitting the caching downlink data frame.
11. the communication device of WLAN according to claim 10, which is characterized in that
The communication unit is also used to: receiving the site apparatus in response to the confirmation message of the caching downlink data frame feedback Frame,
Wherein, the when a length of caching transmission duration of downlink data frame, institute of the duration field of the resource allocation message frame State the sum of the transmission duration of resource allocation message frame, twice of default interframe gap duration and duration of the confirmation message frame.
12. the communication device of WLAN according to claim 10, which is characterized in that
When the instruction information is set as second value, the indicating unit is also used to: indicating the multicast wakeup message frame Site apparatus does not wake up its principal communication interface.
13. the communication device of WLAN according to claim 10, which is characterized in that
The communication unit is also used to: raw after sending the multicast wakeup message frame and the wake-up principal communication interface At and send beacon frame,
The prefixed time interval is to send the multicast wakeup message frame to the time generated between beacon frame described in first frame Interval.
14. a kind of communication device of WLAN, be suitable for site apparatus, the site apparatus include principal communication interface and time Communication interface, when the principal communication interface is in suspend mode, the secondary communication interface can receive multicast under wake mode Wakeup message frame, which is characterized in that the communication device of the WLAN includes:
Communication unit, for receiving the multicast wakeup message frame, the multicast wakeup message frame includes to receive to cache lower line number According to the instruction information of frame；
When resolution unit for parsing the instruction information is the first value, between the preset time for receiving the wakeup message frame Every rear, the principal communication interface is waken up；
The communication unit is also used to: being received resource allocation message frame and is accessed the principal communication channel of access point apparatus distribution, institute Principal communication channel is stated for carrying the wireless carrier for transmitting the caching downlink data frame.
15. the communication device of WLAN according to claim 14, which is characterized in that
The communication unit is also used to: receiving the caching downlink data frame based on the principal communication transmission, and to institute It states access point apparatus and sends confirmation message frame,
Wherein, the when a length of caching transmission duration of downlink data frame, institute of the duration field of the resource allocation message frame State the sum of the transmission duration, two default interframe gap durations and the duration of the confirmation message frame of resource allocation message frame.
16. the communication device of WLAN according to claim 14, which is characterized in that
The resolution unit is also used to: when the parsing instruction information is second value, not waking up the principal communication interface；
The resolution unit is also used to: when the parsing instruction information is first value, indicating the site apparatus according to non- Competing cycle parameter receives the caching downlink data frame；
The communication unit is also used to: after receiving the multicast wakeup message frame, being waken up the principal communication interface and is received institute The beacon frame of the specified number of access point apparatus broadcast transmission is stated, includes the contention-free period parameter in the beacon frame.
17. the communication device of WLAN according to claim 14, which is characterized in that
The communication unit is also used to: after receiving the multicast wakeup message frame and the wake-up principal communication interface, being connect Beacon frame is received,
The prefixed time interval is that described access point equipment sends letter described in the multicast wakeup message frame to generation first frame Mark the time interval between frame.
18. the communication device of WLAN described in any one of 0 to 17 according to claim 1, which is characterized in that
The instruction information of the data cached frame is written in the form of information element.
19. a kind of access point apparatus characterized by comprising
The communication device of WLAN as described in any one of claim 10 to 13,18.
20. a kind of site apparatus characterized by comprising
The communication device of WLAN as described in any one of claim 14 to 18.
CN201710868077.4A 2017-09-22 2017-09-22 Communication method and device of wireless local area network, access point equipment and site equipment Active CN109548119B (en)

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