CN105007568B - A kind of transmission method, relevant device and the system of multicast message frame - Google Patents
A kind of transmission method, relevant device and the system of multicast message frame Download PDFInfo
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- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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Abstract
The embodiment of the invention discloses a kind of transmission method, relevant device and the system of multicast message frame, this method includes：Broadcast message frame is generated, the broadcast message frame includes at least the service channel information of the multicast address of multicast message frame, the seeervice cycle of the multicast message frame and the multicast message frame that need to transmit；The broadcast message frame is sent, the broadcast message frame is for notifying site apparatus current access point within the seeervice cycle that can transmit the multicast message frame；Within the seeervice cycle of the multicast message frame, the multicast message frame is transmitted by the service channel.It, can be by preset service channel effectively transport multicast message frame, to eliminate interference of the unicast messages frame to multicast message frame using the present invention.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method, a related device, and a system for transmitting a multicast message frame.
Background
With the progress of information communication technology, various wireless communication technologies have recently been rapidly developed. Currently, the 802.11 protocol group forms a research group of the next generation Wi-Fi technology, High Efficiency wireless local area network (HEW), to improve the throughput of current wireless communication. The main application scenario of the HEW technology is in places with dense population and more dense communication environment, such as stadiums, railway stations and the like. However, in a dense environment, the Access Point (AP) and each Station (Station) perform unicast message communication with the same content, which affects the effective utilization of the spectrum.
Currently, in 802.11aa, a mechanism of advanced multicast with retries-service period (GCR-SP) carrying retry service period is specified to transmit broadcast messages with the same content to each station, i.e., STAs. However, the broadcast message, i.e., the GCR-SP, is vulnerable to interference of the unicast message frame, thereby causing a delay of the broadcast message frame, especially in a case where the communication environment is very dense, which destroys the clock in the entire Basic Service Set (BSS), so that the corresponding STAs cannot receive the broadcast message in a specific Service period (Service period, SP).
Disclosure of Invention
The technical problem to be solved in the embodiments of the present invention is to provide a method, a related device, and a system for transmitting a multicast message frame, which can effectively transmit the multicast message frame through a preset service channel.
In a first aspect, an embodiment of the present invention provides a method for transmitting a multicast message frame, including:
generating a broadcast message frame, wherein the broadcast message frame at least comprises a multicast address of a multicast message frame to be transmitted, a service period of the multicast message frame and service channel information of the multicast message frame;
sending the broadcast message frame, wherein the broadcast message frame is used for informing a site that a current access point can transmit the multicast message frame in the service period;
and transmitting the multicast message frame through the service channel in the service period of the multicast message frame.
With reference to the first aspect, in a first possible implementation manner, if a service channel of the multicast message frame is in a working channel of the broadcast message frame, the service period is in a non-contention period of the working channel.
With reference to the first aspect, in a second possible implementation manner, if the service channel is not in the working channel of the broadcast message frame, the broadcast message frame further includes a switching time point of the service period;
the transmitting the multicast message frame through the service channel includes:
and switching to the service channel according to the switching time point of the service period so as to transmit the multicast message frame.
With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner, the method further includes:
and setting a network allocation vector NAV of a working channel of the broadcast message frame to be in a busy state in a service period of the multicast message frame.
With reference to the first aspect, in a fourth possible implementation manner, the multicast addresses of the multicast message frame include at least two, and the content of the multicast message frame corresponding to each multicast address is different.
With reference to the first aspect, in a fifth possible implementation manner, the broadcast message frame is a beacon frame.
With reference to the first aspect, or the first possible implementation manner of the first aspect, or the second possible implementation manner of the first aspect, or the third possible implementation manner of the first aspect, or the fourth possible implementation manner of the first aspect, or the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, before the transmitting the multicast message frame through the service channel, the method further includes:
determining the retransmission times of the multicast message frame;
the transmitting the multicast message frame through the service channel includes:
and broadcasting the multicast message frame based on the service channel according to the retransmission times of the multicast message frame.
In a second aspect, an embodiment of the present invention further provides a method for transmitting a multicast message frame, including:
receiving a broadcast message frame sent by an access point;
analyzing the broadcast message frame to obtain the period information of the multicast message frame to be received, wherein the period information of the multicast message frame at least comprises the service period of the multicast message frame and the service channel information of the multicast message frame;
and establishing wireless connection with the access point according to the service period of the multicast message frame, and receiving the multicast message frame through the service channel.
In a third aspect, an embodiment of the present invention further provides an access point device, including:
a generating module, configured to generate a broadcast message frame, where the broadcast message frame at least includes a multicast address of a multicast message frame to be transmitted, a service period of the multicast message frame, and service channel information of the multicast message frame;
a sending module, configured to send the broadcast message frame generated by the generating module, where the broadcast message frame is used to notify a station that a current access point will transmit the multicast message frame in the service period;
and the transmission module is used for transmitting the multicast message frame through the service channel in the service period of the multicast message frame.
With reference to the third aspect, in a first possible implementation manner, if a service channel of the multicast message frame is in a working channel of the broadcast message frame, the service period is in a non-contention period of the working channel.
With reference to the third aspect, in a second possible implementation manner, if the service channel is not in the working channel of the broadcast message frame, the broadcast message frame further includes a switching time point of the service period;
the transmission module is specifically configured to:
and switching to the service channel according to the switching time point of the service period so as to transmit the multicast message frame.
With reference to the second possible implementation manner of the third aspect, in a third possible implementation manner, the method further includes:
and the setting module is used for setting the network allocation vector NAV of the working channel of the broadcast message frame to be in a busy state in the service period of the multicast message frame.
With reference to the third aspect, in a fourth possible implementation manner, the multicast addresses of the multicast message frame include at least two, and the content of the multicast message frame corresponding to each multicast address is different.
With reference to the third aspect, in a fifth possible implementation manner, the broadcast message frame is a beacon frame.
With reference to the third aspect, or the first possible implementation manner of the third aspect, or the second possible implementation manner of the third aspect, or the third possible implementation manner of the third aspect, or the fourth possible implementation manner of the third aspect, or the fifth possible implementation manner of the third aspect, in a sixth possible implementation manner, the method further includes:
a determining module, configured to determine the number of retransmissions of the multicast message frame;
the transmission module is specifically configured to:
and in the service period of the multicast message frame, broadcasting the multicast message frame based on the service channel according to the retransmission times of the multicast message frame.
In a fourth aspect, an embodiment of the present invention further provides a station device, including:
a first receiving module, configured to receive a broadcast message frame sent by an access point device;
the analysis module is used for analyzing the broadcast message frame received by the first receiving module to obtain the period information of the multicast message frame to be received, wherein the period information of the multicast message frame at least comprises the service period of the multicast message frame and the service channel information of the multicast message frame;
and the second receiving module is used for establishing wireless connection with the access point equipment according to the service period of the multicast message frame analyzed by the analyzing module and receiving the multicast message frame through the service channel.
In a fifth aspect, an embodiment of the present invention further provides a wireless communication system, including an access point device and a station device; wherein,
the access point device is an access point device in the third aspect, or the first possible implementation manner of the third aspect, or the second possible implementation manner of the third aspect, or the third possible implementation manner of the third aspect, or the fourth possible implementation manner of the third aspect, or the fifth possible implementation manner of the third aspect, or the sixth possible implementation manner of the third aspect;
the station apparatus is the station apparatus of the fourth aspect.
The embodiment of the invention broadcasts the service period of the multicast message frame and the period information such as the preset service channel to each site by sending the broadcast message frame containing the service period information of the multicast message frame, and transmits the multicast message through the service channel in the service period, thereby eliminating the interference of the unicast message frame to the multicast message frame and enabling site equipment to normally receive the multicast message frame.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart illustrating a method for transmitting a multicast message frame according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating another method for transmitting a multicast message frame according to an embodiment of the present invention;
fig. 3 is an interaction diagram of a transmission method of multicast message frames according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an access point device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another access point device provided in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a station device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a wireless communication system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is to be understood that the terminology used in the embodiments of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
Fig. 1 is a schematic flow chart of a method for transmitting a multicast message frame according to an embodiment of the present invention, where the method is specifically applicable to access point devices such as a network management device, a router, and an intelligent mobile terminal, and specifically, the method includes:
s101: generating a broadcast message frame, wherein the broadcast message frame at least comprises a multicast address of a multicast message frame to be transmitted, a service period of the multicast message frame and service channel information of the multicast message frame.
It should be noted that the service channel of the multicast message frame is a preset dedicated channel, specifically, the dedicated channel may be a logical channel or a physical channel, and the embodiment of the present invention is not limited thereto.
Further, the multicast addresses of the multicast message frame include at least two, and the content of the multicast message frame corresponding to each multicast address is different.
S102: and sending the broadcast message frame, wherein the broadcast message frame is used for informing a site that the current access point can transmit the multicast message frame in the service period.
Optionally, the broadcast message frame is a management message frame, and may specifically be a Beacon (Beacon) frame, and the multicast address, the service period, and the service channel information of the multicast message frame may be encapsulated in the Beacon frame in the form of an information element IE. Specifically, the beacon frame is a complete beacon frame, and the beacon frame may include other information constituting the complete beacon frame besides the multicast address, the service period, and the service channel information of the multicast message frame, which is not described herein again.
In a specific embodiment, the current AP may determine a service period of a multicast message frame, i.e., a GCS-SP, that needs to be transmitted. Optionally, if the service channel of the multicast message frame is in the working channel of the broadcast message frame, that is, the service channel is a logical channel, the service period of the multicast message frame may be determined to be within a contention-free period (CFP) of the working channel of the broadcast message frame, so as to avoid interference of other stations with current communication.
Further optionally, if the service channel is not in the working channel of the broadcast message frame, that is, the service channel is a physical channel, the broadcast message frame may further include a switching time point of the service period. When the multicast message frame is transmitted through the service channel, the service channel can be switched to according to the switching time point of the service cycle to transmit the multicast message frame. Further, in the service period of the multicast message frame, a Network Allocation Vector (NAV) of a working channel of the broadcast message frame may be set to a busy state.
S103: and transmitting the multicast message frame through the service channel in the service period of the multicast message frame.
When the service period of the multicast message frame arrives, the current AP may transmit the multicast message frame through the service channel, and transmit the multicast message frame to the corresponding station.
Further, before transmitting the multicast message frame through the service channel, the number of retransmissions of the multicast message frame may also be determined. When the current AP transmits the multicast message frame, the multicast message frame may be broadcasted based on the service channel according to the determined retransmission times. For example, if the determined number of retransmissions is 3, the multicast message frame may be transmitted 3 times through the service channel at a predetermined time interval, for example, every 50 ms. Specifically, the retries, that is, the number of retransmissions, may be determined by negotiation between the current access point and the station, and the embodiment of the present invention is not limited.
By implementing the embodiment of the invention, the broadcast message frame containing the service period information of the multicast message frame is sent, so that the service period of the multicast message frame and the period information such as the preset service channel are broadcasted to each station, and the multicast message is transmitted through the service channel in the service period, thereby eliminating the interference of the unicast message frame on the multicast message frame, enabling the station equipment to normally receive the multicast message frame, and being beneficial to saving electricity of the station equipment.
Referring to fig. 2, a schematic flow chart of another multicast message frame transmission method provided in an embodiment of the present invention is shown, where the method is specifically applicable to a site device such as an intelligent mobile terminal, a tablet computer, a personal digital assistant, and the like, and specifically, the method includes:
s201: and receiving a broadcast message frame sent by the access point.
S202: and analyzing the broadcast message frame to obtain the period information of the multicast message frame to be received, wherein the period information of the multicast message frame at least comprises the service period of the multicast message frame and the service channel information of the multicast message frame.
In a specific embodiment, when the current station receives a broadcast message frame sent by an access point, the current station may parse the broadcast message frame to obtain a service period and service channel information of a multicast message frame, so as to establish a wireless connection with the access point when the service period arrives, and receive a corresponding multicast message through the service channel.
S203: and establishing wireless connection with the access point according to the service period of the multicast message frame, and receiving the multicast message frame through the service channel.
The embodiment of the invention can obtain the service period and the service channel information of the multicast message frame to be received by analyzing the received broadcast message frame, so that when the service period arrives, the corresponding multicast message is received through the service channel, thereby eliminating the interference of the unicast message frame on the multicast message frame and enabling the site to normally receive the multicast message frame.
Further, please refer to fig. 3, which is an interaction diagram of a method for transmitting a multicast message frame according to an embodiment of the present invention, specifically, the method includes:
s301: the access point generates a broadcast message frame, wherein the broadcast message frame at least comprises a multicast address of a multicast message frame to be transmitted, a service period of the multicast message frame and service channel information of the multicast message frame.
In a specific embodiment, the broadcast message frame is a management message frame, and may be specifically a beacon frame. The multicast address, service period, and service channel information of the multicast message frame may be encapsulated in the beacon frame in the form of an information element IE.
It should be noted that the service channel of the multicast message frame is a preset dedicated channel, specifically, the dedicated channel may be a logical channel or a physical channel, and the embodiment of the present invention is not limited thereto.
Further, the multicast addresses of the multicast message frame include at least two, and the content of the multicast message frame corresponding to each multicast address is different.
S302: the access point broadcasts the broadcast message frame.
In a specific embodiment, the broadcast message frame is used to notify the station device that the current access point will send the multicast message frame in the service period, so that the corresponding station device can receive the multicast message in time.
Specifically, the current AP may determine a service period of a multicast message frame, that is, a GCS-SP, which needs to be transmitted, and optionally, if a service channel of the multicast message frame is in a working channel of the broadcast message frame, that is, the service channel is a logical channel, the service period of the multicast message frame may be determined to be within a non-contention period CFP of the working channel of the broadcast message frame, so as to avoid interference of other stations with current communication.
Further optionally, if the service channel is not in the working channel of the broadcast message frame, that is, the service channel is a physical channel, the broadcast message frame may further include a switching time point of the service period. When the multicast message frame is transmitted through the service channel, the service channel can be switched to according to the switching time point of the service cycle to transmit the multicast message frame. Further, in the service period of the multicast message frame, the network allocation vector NAV of the working channel of the broadcast message frame may also be set to a busy state.
S303: and the station analyzes the broadcast message frame to obtain the period information of the multicast message frame to be received, wherein the period information of the multicast message frame at least comprises the service period of the multicast message frame and the service channel information of the multicast message frame.
In a specific embodiment, when receiving a broadcast message frame sent by an access point, a current station may obtain a service period and service channel information of a multicast message frame from the broadcast message frame, so as to establish a wireless connection with the access point when the service period arrives, and receive a corresponding multicast message through the service channel.
S304: the access point determines the number of retransmissions of the multicast message frame.
Further, the number of retransmissions of the multicast message frame may be determined prior to transmission of the multicast message frame over the service channel.
S305: and in the service period of the multicast message frame, the access point broadcasts the multicast message frame based on the service channel according to the retransmission times of the multicast message frame.
When the service period of the multicast message frame arrives, the current AP may transmit the multicast message frame through the service channel, and send the multicast message frame to the relevant station.
Specifically, when the current AP transmits the multicast message frame, the multicast message frame may be broadcasted based on the service channel according to the determined retransmission times. For example, if the determined number of retransmissions is 3, the multicast message frame may be transmitted 3 times through the service channel at a predetermined time interval, for example, every 50 ms. Specifically, the retries, i.e. the number of retransmissions, can be determined by the current access point negotiating with the station.
S306: and the station establishes wireless connection with the access point according to the service period of the multicast message frame and receives the multicast message frame through the service channel.
By implementing the embodiment of the invention, the access point can broadcast the service period of the multicast message frame and the period information such as the preset service channel to each site by sending the broadcast message frame comprising the service period information of the multicast message frame, so that the relevant sites can receive the multicast message frame through the service channel, thereby eliminating the interference of the unicast message frame on the multicast message frame, enabling the site equipment to normally receive the multicast message frame and being beneficial to the power saving of the site equipment.
Fig. 4 is a schematic structural diagram of an access point device according to an embodiment of the present invention, and specifically, the access point device includes a generating module 11, a sending module 12, and a transmitting module 13. Wherein,
the generating module 11 is configured to generate a broadcast message frame, where the broadcast message frame at least includes a multicast address of a multicast message frame to be transmitted, a service period of the multicast message frame, and service channel information of the multicast message frame.
The broadcast message frame is a management message frame, and may be specifically a beacon frame. The multicast addresses of the multicast message frame may include at least two, and the content of the multicast message frame corresponding to each multicast address is different.
It should be noted that the service channel of the multicast message frame is a preset dedicated channel, specifically, the dedicated channel may be a logical channel or a physical channel, and the embodiment of the present invention is not limited thereto.
The sending module 12 is configured to send the broadcast message frame generated by the generating module 11, where the broadcast message frame is used to notify a station device that a current access point will transmit the multicast message frame in the service period.
The transmission module 13 is configured to transmit the multicast message frame through the service channel in a service period of the multicast message frame.
When the service period of the multicast message frame arrives, the transmission module 13 may transmit the multicast message frame through the service channel, and send the multicast message frame to the corresponding station device.
Specifically, the access point device in the embodiment of the present invention may be, for example, a network management device, a router, an intelligent mobile terminal, or other network devices.
By implementing the embodiment of the invention, the broadcast message frame containing the service period information of the multicast message frame is sent, so that the service period of the multicast message frame and the period information such as the preset service channel are broadcasted to each site device, and the multicast message is transmitted through the service channel in the service period, thereby eliminating the interference of the unicast message frame on the multicast message frame, and enabling the relevant site device to normally receive the multicast message frame.
Further, please refer to fig. 5, which is a schematic structural diagram of another access point device provided in an embodiment of the present invention, where the access point device includes a generating module 11, a sending module 12, and a transmitting module 13 of the access point device, and in the embodiment of the present invention, the access point device further includes:
a setting module 14, configured to set a network allocation vector NAV of a working channel of the broadcast message frame to a busy state in a service period of the multicast message frame.
Optionally, if the service channel is in the working channel of the broadcast message frame, the service period of the multicast message frame may be in a non-contention period of the working channel of the broadcast message frame.
Further optionally, if the service channel is not in the working channel of the broadcast message frame, the broadcast message frame further includes a switching time point of the service period. Further, when the transmission module 13 transmits the multicast message frame through the service channel, it may switch to the service channel according to a switching time point of the service period to transmit the multicast message frame. Further, in the service period of the multicast message frame, the setting module 14 may further set the network allocation vector NAV of the working channel of the broadcast message frame to a busy state.
Further, in this embodiment of the present invention, the access point device may further include:
a determining module 15, configured to determine the number of retransmissions of the multicast message frame;
the transmission module 13 is specifically configured to:
and in the service period of the multicast message frame, broadcasting the multicast message frame based on the service channel according to the retransmission times of the multicast message frame.
Further, before the transmission module 13 transmits the multicast message frame through the service channel, the number of retransmissions of the multicast message frame may also be determined by the determination module 15. When the transmission module 13 transmits the multicast message frame, the multicast message frame may be transmitted according to the retransmission number determined by the determination module 15, for example, if the determined retransmission number is 3 times, the multicast message frame may be transmitted 3 times at a preset time interval, for example, every 50ms, through the service channel. Specifically, the retries, that is, the number of retransmissions, may be determined by negotiation between the current access point device and the station device, and the embodiment of the present invention is not limited.
By implementing the embodiment of the invention, the service period of the multicast message frame and the period information such as the preset service channel are broadcasted to each site by sending the broadcast message frame containing the service period information of the multicast message frame, and the multicast message is transmitted through the service channel, so that the interference of the unicast message frame to the multicast message frame is eliminated, the related site can normally receive the multicast message frame, and the power saving of site equipment is facilitated.
Fig. 6 is a schematic structural diagram of a station device according to an embodiment of the present invention, and specifically, the station device includes a first receiving module 21, an analyzing module 22, and a second receiving module 23. Wherein,
the first receiving module 21 is configured to receive a broadcast message frame sent by an access point device.
The analyzing module 22 is configured to analyze, from the broadcast message frame received by the first receiving module 21, to obtain period information of a multicast message frame that needs to be received, where the period information of the multicast message frame at least includes a service period of the multicast message frame and service channel information of the multicast message frame.
In a specific embodiment, when receiving the broadcast message frame, the first receiving module 21 may obtain information such as a service period and a service channel of the multicast message frame from the broadcast message frame through the parsing module 22.
The second receiving module 23 is configured to establish a wireless connection with the access point device according to the service period of the multicast message frame analyzed by the analyzing module 22, and receive the multicast message frame through the service channel.
Specifically, the site device of the embodiment of the present invention may be, for example, an intelligent mobile terminal, a tablet computer, a personal digital assistant, or other network devices.
The embodiment of the invention can obtain the service period and the service channel information of the multicast message frame to be received by analyzing the received broadcast message frame, so that when the service period arrives, the corresponding multicast message is received through the service channel, thereby eliminating the interference of the unicast message frame on the multicast message frame and enabling the relevant site equipment to normally receive the multicast message frame.
Fig. 7 is a schematic structural diagram of a wireless communication system according to an embodiment of the present invention, where the wireless communication system includes an access point device 1 and a station device 2, where the access point device 1 and the station device 2 are connected to each other by a wired connection
The access point device 1 may be the access point device in any embodiment of fig. 4 to fig. 5, which is not described herein again;
the station device 2 may be the station device in the embodiment of fig. 6, and is not described herein again.
By implementing the embodiment of the invention, the access point can broadcast the service period of the multicast message frame and the period information such as the preset service channel to each site by sending the broadcast message frame comprising the service period information of the multicast message frame, so that the relevant site can receive the multicast message frame through the service channel, thereby eliminating the interference of the unicast message frame on the multicast message frame and enabling the site equipment to normally receive the multicast message frame.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (13)
1. A method for transmitting a multicast message frame, comprising:
generating a broadcast message frame, wherein the broadcast message frame at least comprises a multicast address of a multicast message frame to be transmitted, a service period of the multicast message frame and service channel information of the multicast message frame;
sending the broadcast message frame, wherein the broadcast message frame is used for informing a site that a current access point can transmit the multicast message frame in the service period;
transmitting the multicast message frame through the service channel in a service period of the multicast message frame;
if the service channel of the multicast message frame is in the working channel of the broadcast message frame, the service period is in the non-contention period of the working channel; or,
if the service channel is not in the working channel of the broadcast message frame, the broadcast message frame further includes a switching time point of the service period;
the transmitting the multicast message frame through the service channel includes:
and switching to the service channel according to the switching time point of the service period so as to transmit the multicast message frame.
2. The method of claim 1, further comprising:
and setting a network allocation vector NAV of a working channel of the broadcast message frame to be in a busy state in a service period of the multicast message frame.
3. The method of claim 1, wherein the multicast addresses of the multicast message frames comprise at least two, and the content of the multicast message frame corresponding to each multicast address is different.
4. The method of claim 1, wherein the broadcast message frame is a beacon frame.
5. The method of any of claims 1-4, wherein prior to said transmitting said multicast message frame over said service channel, further comprising:
determining the retransmission times of the multicast message frame;
the transmitting the multicast message frame through the service channel includes:
and broadcasting the multicast message frame based on the service channel according to the retransmission times of the multicast message frame.
6. A method for transmitting a multicast message frame, comprising:
receiving a broadcast message frame sent by an access point;
analyzing the broadcast message frame to obtain the period information of the multicast message frame to be received, wherein the period information of the multicast message frame at least comprises the service period of the multicast message frame and the service channel information of the multicast message frame;
establishing wireless connection with the access point according to the service period of the multicast message frame, and receiving the multicast message frame through the service channel;
if the service channel of the multicast message frame is in the working channel of the broadcast message frame, the service period is in the non-contention period of the working channel; or,
if the service channel is not in the working channel of the broadcast message frame, the broadcast message frame further includes a switching time point of the service period;
the receiving the multicast message frame through the service channel includes:
and switching to the service channel according to the switching time point of the service period so as to receive the multicast message frame.
7. An access point device, comprising:
a generating module, configured to generate a broadcast message frame, where the broadcast message frame at least includes a multicast address of a multicast message frame to be transmitted, a service period of the multicast message frame, and service channel information of the multicast message frame;
a sending module, configured to send the broadcast message frame generated by the generating module, where the broadcast message frame is used to notify a station that a current access point will transmit the multicast message frame in the service period;
a transmission module, configured to transmit the multicast message frame through the service channel in a service period of the multicast message frame;
if the service channel of the multicast message frame is in the working channel of the broadcast message frame, the service period is in the non-contention period of the working channel; or,
if the service channel is not in the working channel of the broadcast message frame, the broadcast message frame further includes a switching time point of the service period;
the transmission module is specifically configured to:
and switching to the service channel according to the switching time point of the service period so as to transmit the multicast message frame.
8. The access point device of claim 7, further comprising:
and the setting module is used for setting the network allocation vector NAV of the working channel of the broadcast message frame to be in a busy state in the service period of the multicast message frame.
9. The access point device of claim 7, wherein the multicast addresses of the multicast message frames include at least two, and the content of the multicast message frame corresponding to each multicast address is different.
10. The access point device of claim 7, wherein the broadcast message frame is a beacon frame.
11. The access point device of any of claims 7-10, further comprising:
a determining module, configured to determine the number of retransmissions of the multicast message frame;
the transmission module is specifically configured to:
and in the service period of the multicast message frame, broadcasting the multicast message frame based on the service channel according to the retransmission times of the multicast message frame.
12. A station apparatus, comprising:
a first receiving module, configured to receive a broadcast message frame sent by an access point device;
the analysis module is used for analyzing the broadcast message frame received by the first receiving module to obtain the period information of the multicast message frame to be received, wherein the period information of the multicast message frame at least comprises the service period of the multicast message frame and the service channel information of the multicast message frame, and the service channel of the multicast message frame is a preset dedicated channel;
the second receiving module is used for establishing wireless connection with the access point equipment according to the service period of the multicast message frame analyzed by the analyzing module and receiving the multicast message frame through the service channel;
if the service channel of the multicast message frame is in the working channel of the broadcast message frame, the service period is in the non-contention period of the working channel; or,
if the service channel is not in the working channel of the broadcast message frame, the broadcast message frame further includes a switching time point of the service period;
the second receiving module is specifically configured to:
and switching to the service channel according to the switching time point of the service period so as to receive the multicast message frame.
13. A wireless communication system comprising an access point device and a station device; wherein,
the access point device is an access point device according to any of claims 7-11;
the station apparatus according to claim 12.
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| EP2161953A2 (en) * | 2008-09-09 | 2010-03-10 | NTT DoCoMo, Inc. | Access point, wireless communication station, wireless communication system and wireless communication method |
| CN103634126A (en) * | 2012-08-22 | 2014-03-12 | 华为技术有限公司 | Multicast information transmission method and device |
| CN104023316A (en) * | 2013-03-01 | 2014-09-03 | 华为技术有限公司 | Multicast information transmission method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2161953A2 (en) * | 2008-09-09 | 2010-03-10 | NTT DoCoMo, Inc. | Access point, wireless communication station, wireless communication system and wireless communication method |
| CN103634126A (en) * | 2012-08-22 | 2014-03-12 | 华为技术有限公司 | Multicast information transmission method and device |
| CN104023316A (en) * | 2013-03-01 | 2014-09-03 | 华为技术有限公司 | Multicast information transmission method and device |
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