CN102209300A - Streaming data relay device and relevant wireless gateway device - Google Patents
Streaming data relay device and relevant wireless gateway device Download PDFInfo
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- CN102209300A CN102209300A CN201010135426XA CN201010135426A CN102209300A CN 102209300 A CN102209300 A CN 102209300A CN 201010135426X A CN201010135426X A CN 201010135426XA CN 201010135426 A CN201010135426 A CN 201010135426A CN 102209300 A CN102209300 A CN 102209300A
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Abstract
The invention provides a streaming data relay device. One embodiment of the streaming data relay device comprises a radio frequency module, an Ethernet connection module and a control unit, wherein the radio frequency module is used for receiving streaming data transmitted by a gateway device in a unicast transmission mode; the control unit is used for transmitting the streaming data to a plurality of client devices corresponding to the same multicast group via the Ethernet connection module in a unicast transmission mode; and when the first client device in the client devices requests to exit from the multicast group, the control unit transmits the physical address of the first client device to the wireless gateway device by virtue of the radio frequency module in a wireless transmission mode. Because the streaming data relay device can receive the streaming data transmitted from the wireless gateway device in a wireless transmission mode, a user can have more choices for wireless gateway device placing positions.
Description
Technical field
The relevant technology that the media stream service is provided of the present invention refers to a kind of flow data relay and relevant wireless gateway apparatus that promotes the media stream service quality especially.
Background technology
Along with the increase of world-wide web line frequency range, it is more and more universal that the application of media stream service becomes.In user applies media stream when service,, media stream is served the dealer and most likely provides box on the machine of a special use of user, to receive the content of media stream service.In many application, media stream is served the content that the dealer can send the media stream service with multicast (multicast) transmission means.
Media stream serve second that box on the machine that the dealer provides must utilize physics too network line connect gateway apparatus so that online, this regular meeting causes the puzzlement of user in wiring or decoration.Gateway apparatus when in addition, some user can use wireless access node (Wireless AP) to be used as other device online.Therefore, some media stream serves the dealer or the user can additionally be provided with a wireless receiving and dispatching module on the Network Transmission interface very much in the second of box on the machine, makes that box can carry out communication by this wireless receiving and dispatching module and wireless access node on the machine.So, can make that the putting position of box has higher elasticity on the machine.
Yet, in general wireless transmission environment, send the situation that packet loss (packet loss) appears in multimedia streaming data easily, and then cause the problem that the media stream service quality worsens, the user complains increase in the multicast transmission mode.
Summary of the invention
In view of this, how to alleviate or the media stream service in the above association area of solving provides the disappearance of mechanism, real system presses for the problem of solution.
This specification provides a kind of embodiment of flow data relay, and it includes: a radio frequency module is used for receiving the flow data that a wireless gateway apparatus sends in the unicast transmission mode; One second too network connects module; And a control unit, be used for this flow data with the unicast transmission mode by this second too network connect a plurality of user end apparatus that module sends corresponding same multicast group to; Wherein when one first user end apparatus in these a plurality of user end apparatus requires to withdraw from this multicast group, this control unit can send the physical address of this first user end apparatus to this wireless gateway apparatus by this radio frequency module.
This specification provides a kind of embodiment of wireless gateway apparatus in addition, and it includes: a communication interface is used for receiving the flow data that sends over and point to a multicast group in the multicast transmission mode; One radio frequency module; And a processor, be used for this flow data is sent to and the first-class data relay device that a plurality of user end apparatus that should multicast group are coupled mutually by this radio frequency module in the unicast transmission mode; Wherein when one first user end apparatus in these a plurality of user end apparatus requires to withdraw from this multicast group, as long as have any other user end apparatus not withdraw from this multicast group yet in these a plurality of user end apparatus, the flow data that this processor will continue to point to this multicast group is sent to this flow data relay in the unicast transmission mode by this radio frequency module.
Description of drawings
Fig. 1 is the calcspar after an embodiment of multimedia streaming data conveyer of the present invention simplifies.
Fig. 2 is the functional block diagram after an embodiment of flow data relay of the present invention simplifies.
Fig. 3 is the functional block diagram after an embodiment of wireless gateway apparatus of the present invention simplifies.
[main element symbol description]
100 multimedia streaming data conveyers
110 wireless gateway apparatus
120 flow data relays
130 world-wide webs
140 media stream servers
150,160,170 user end apparatus
210,310 radio frequency modules
220 control units
230 second too network connect module
240,340 store module
320 processors
330 communication interfaces
Embodiment
In the middle of specification and follow-up claim, used some vocabulary to censure specific element.One of skill in the art should understand, and same element may be called with different nouns.This specification and follow-up claim are not used as distinguishing the mode of element with the difference of title, but the benchmark that is used as distinguishing with the difference of element on function.Be an open term mentioned " comprising " in the middle of specification and the follow-up claim in the whole text, so should be construed to " comprise but be not limited to ... ".
Please refer to Fig. 1, it is described is calcspar after the multimedia streaming data conveyer 100 of one embodiment of the invention is simplified.Multimedia streaming data conveyer 100 includes flow data relay (streaming data relay apparatus) 110 and wireless gateway apparatus (wireless gatewayapparatus) 120.Flow data relay 110 can be coupled to a plurality of user end apparatus (illustrating user end apparatus 150,160 and 170 among Fig. 1 for example), for example box etc. on the machine." couple " speech and comprise any indirect connection means that directly reach.In other words, flow data relay 110 can directly (comprise by signal connected modes such as electric connection or wireless transmission, optical delivery) and is connected in these user end apparatus, or by other devices or connection means indirectly electrically or signal be connected to these user end apparatus.120 of wireless gateway apparatus can carry out communication by the media stream server 140 that world-wide web 130 and media stream are served dealer's (for example network is served dealer or cable television operators), to obtain relevant media stream service.
Fig. 2 is the functional block diagram after an embodiment of flow data relay 110 simplifies.In the present embodiment, flow data relay 110 comprises radio frequency module 210, control unit 220, second too network connection module 230 and storage module 240.The physical address (physical address, for example MAC address) of each user end apparatus that storage module 240 meeting recorded stream data relay device 110 couple and the corresponding data at employed physical communication port.
Fig. 3 is the functional block diagram after an embodiment of wireless gateway apparatus 120 simplifies.Wireless gateway apparatus 120 in the present embodiment comprises radio frequency module 310, processor 320, communication interface 330 and stores module 340.
Below will further specify the function mode of multimedia streaming data conveyer 100.
Whenever the Any user end device will be participated in (join) one specific multicast group when obtaining specific media stream content, this user end apparatus can be according to general multicast group members qualification communications protocol, produce multicast group members report (membership report) message, and utilize second too network package this multicast group members report message is sent to flow data relay 110.Aforesaid multicast group members qualification communications protocol can be used world-wide web management and group communications protocol (Internet GroupManagement Protocol, IGMP), the multicast monitor find agreement (Multicast ListenerDiscovery, MLD) or other agreement.
For example, when user end apparatus 150 will be participated in the GROUP_1 of multicast group when obtaining specific media stream content, user end apparatus 150 can produce multicast group members report message MR_150, and utilize second too network package report that with multicast group members message MR_150 sends to flow data relay 110.
When the second of flow data relay 110 after too network connects the multicast group members report message MR_150 that module 230 receives that user end apparatus 150 transmits, the control unit 220 of flow data relay 110 can require user end apparatus 150 to participate in the message of the multicast GROUP_1 of group and the physical address PHY_150 of user end apparatus 150, sends wireless gateway apparatus 120 by radio frequency module 210 to wireless transmission method.
In one embodiment, control unit 220 can add the physical address PHY_150 of user end apparatus 150 among the multicast group members report message MR_150, to produce an amended multicast group members report message MR_150 '.Afterwards, control unit 220 reports that with multicast group members message MR_150 ' sends wireless gateway apparatus 120 to wireless transmission method by radio frequency module 210 again.On real the work, control unit 220 can be recorded in the physical address PHY_150 of user end apparatus 150 reservation field or other the available fields of multicast group members report message MR_150 ', for example in the Mo Duan field, and in a reservation field of being scheduled to or other available fields, store a cue mark, to include the physical address of specific user's end device (being user end apparatus 150 in this example) among the indication multicast group members report message MR_150 '.
The radio frequency module 310 of wireless gateway apparatus 120 receives that the processor 320 of wireless gateway apparatus 120 can be obtained the physical address PHY_110 of flow data relay 110 when aforesaid multicast group members was reported message MR_150 '.In the present embodiment, processor 320 also can be reported cue mark among the message MR_150 ' according to multicast group members, learns the physical address that also records a user end apparatus (being user end apparatus 150 in this example) among the multicast group members report message MR_150 '.Therefore, processor 320 can learn it is that user end apparatus 150 will be participated in the GROUP_1 of multicast group.Processor 320 can be recorded in the physical address PHY_150 of user end apparatus 150 and the corresponding relation of the GROUP_1 of multicast group in the storage module 340.
In another embodiment, control unit 220 can report that message MR_150 sends wireless gateway apparatus 120 by radio frequency module 210 to wireless transmission method with multicast group members.In addition, control unit 220 also can be recorded in the physical address PHY_150 of user end apparatus 150 and meet second too among management news frame (the action management frame) F_JOIN of network communication protocol together with a cue mark, and sends to wireless gateway apparatus 120 by radio frequency module 210 with wireless transmission method.In the present embodiment, this cue mark is that the user end apparatus 150 that is used to refer to corresponding physical address PHY_150 is to participate in (join) multicast GROUP_1 of group.
Similarly, when the radio frequency module 310 of wireless gateway apparatus 120 was received the multicast group members report message MR_150 that flow data relay 110 transmits, the processor 320 of wireless gateway apparatus 120 can be obtained the physical address PHY_110 of flow data relay 110.In addition, when radio frequency module 310 is received management news frame F_JOIN, processor 320 can be learnt the physical address of a user end apparatus (being user end apparatus 150 in this example) from the content of management news frame F_JOIN, and can learn that user end apparatus 150 is to participate in the GROUP_1 of multicast group by the cue mark among the management news frame F_JOIN.Processor 320 can be recorded in the physical address PHY_150 of user end apparatus 150 and the corresponding relation of the GROUP_1 of multicast group in the storage module 340.
Utilize aforementioned manner, the assistance that the processor 320 of wireless gateway apparatus 120 just can be by flow data relay 110, obtain user end apparatus and the multicast group that participated between corresponding relation.For convenience of description, below hypothesis user end apparatus 150 has been participated in the GROUP_1 of multicast group, and user end apparatus 160 and 170 boths have then participated in the GROUP_2 of multicast group.
When the communication interface 330 of wireless gateway apparatus 120 receives media stream server 140 when sending and pointing to the flow data STREAM_1 of (addressed to) GROUP_1 of multicast group in the multicast transmission mode, processor 320 can be used flow data STREAM_1 instead clean culture (unicast) transmission means and be sent to flow data relay 110 by radio frequency module 310.After the radio frequency module 210 of flow data relay 110 is received flow data STREAM_1, control unit 220 can inquiry stores the physical address and the corresponding data at physical communication port of the user end apparatus of record in the modules 240, with flow data STREAM_1 with the unicast transmission mode by second too network connection module 230 send the user end apparatus 150 of the corresponding multicast GROUP_1 of group to.
When the communication interface 330 of wireless gateway apparatus 120 receives media stream server 140 when sending and pointing to the flow data STREAM_2 of the GROUP_2 of multicast group in the multicast transmission mode, processor 320 can be used flow data STREAM_2 instead the unicast transmission mode and be sent to flow data relay 110 by radio frequency module 310.After the radio frequency module 210 of flow data relay 110 is received flow data STREAM_2, control unit 220 can with flow data STREAM_2 with the unicast transmission mode by second too network connect the user end apparatus 160 and 170 that module 230 sends the corresponding multicast GROUP_2 of group to.
By as can be known aforementioned, flow data relay 110 available wireless transmission meanss receive the flow data that wireless gateway apparatus 120 sends, allow the user more elasticity be arranged for the putting position of wireless gateway apparatus 120, and need not worry and user end apparatus between wiring problem.
In addition, wireless gateway apparatus 120 can be used the unicast transmission mode instead and send to flow data relay 110 by wireless transmission means with media stream server 140 with the flow data that the multicast transmission mode sends.Because the unicast transmission mode has the package retransmission mechanism, can effectively alleviate or solve flow data the problem of packet loss takes place in the wireless transmission process, and then significantly promote the quality of media stream service.
When the Any user end device will withdraw from (leave) one specific multicast group, this user end apparatus can be according to aforesaid multicast group members qualification communications protocol, produce one and withdraw from multicast group (leavegroup) message, and utilize second too network package this withdrawed from multicast group message send to flow data relay 110.
For example, when user end apparatus 160 will withdraw from the GROUP_2 of multicast group, user end apparatus 160 can produce one and withdraw from the message LG_160 of multicast group, and utilize second too network package will withdraw from the message LG_160 of multicast group and send to flow data relay 110.
When second too network connect that module 230 receives that user end apparatus 160 transmits withdraw from the message LG_160 of multicast group after, the control unit 220 of flow data relay 110 can require user end apparatus 160 to withdraw from the message of the GROUP_2 of multicast group and the physical address PHY_160 of user end apparatus 160, sends wireless gateway apparatus 120 by radio frequency module 210 to wireless transmission method.
In one embodiment, control unit 220 can withdraw from the physical address PHY_160 adding of user end apparatus 160 among the message LG_160 of multicast group, to produce an amended message LG_160 ' of multicast group that withdraws from.Afterwards, control unit 220 will withdraw from the message LG_160 ' of multicast group by radio frequency module 210 again and send wireless gateway apparatus 120 to wireless transmission method.On real the work, control unit 220 can be recorded in the physical address PHY_160 of user end apparatus 160 in the reservation field or other available fields that withdraws from the message LG_160 ' of multicast group, for example in the Mo Duan field, and in a reservation field of being scheduled to or other available fields, store a cue mark, withdraw from the physical address that includes specific user's end device (being user end apparatus 160 in this example) among the message LG_160 ' of multicast group with indication.
The radio frequency module 310 of wireless gateway apparatus 120 is received aforesaid when withdrawing from the message LG_160 ' of multicast group, and processor 320 can be obtained the physical address PHY_110 of flow data relay 110.In addition, processor 320 also can be learnt and be withdrawed from the physical address that also records a user end apparatus (being user end apparatus 160 in this example) among the message LG_160 ' of multicast group according to the cue mark that withdraws among the message LG_160 ' of multicast group.Therefore, processor 320 can learn it is that user end apparatus 160 will withdraw from the GROUP_2 of multicast group.Processor 320 can be deleted the physical address PHY_160 of user end apparatus 160 and the corresponding relation of the GROUP_2 of multicast group from storing in the module 340.
In another embodiment, control unit 220 can will withdraw from the message LG_160 of multicast group and send wireless gateway apparatus 120 by radio frequency module 210 to wireless transmission method.In addition, control unit 220 also can be recorded in the physical address PHY_160 of user end apparatus 160 and meet second too among management news frame (the action management frame) F_LEAVE of network communication protocol together with a cue mark, and sends to wireless gateway apparatus 120 by radio frequency module 210 with wireless transmission method.In the present embodiment, this cue mark is that the user end apparatus 160 that is used to refer to corresponding physical address PHY_160 is to withdraw from the GROUP_2 of multicast group.
Similarly, the radio frequency module 310 of wireless gateway apparatus 120 receives that flow data relay 110 transmits when withdrawing from the message LG_160 of multicast group, and the processor 320 of wireless gateway apparatus 120 can be obtained the physical address PHY_110 of flow data relay 110.In addition, when radio frequency module 310 is received management news frame F_LEAVE, processor 320 can be learnt the physical address of a user end apparatus (being user end apparatus 160 in this example) from the content of management news frame F_LEAVE, and can learn that user end apparatus 160 is to withdraw from the GROUP_2 of multicast group by the cue mark among the management news frame F_LEAVE.Processor 320 can be deleted the physical address PHY_160 of user end apparatus 160 and the corresponding relation of the GROUP_2 of multicast group from storing in the module 340.
Yet the processor 320 of wireless gateway apparatus 120 can be inquired about the corresponding relation between user end apparatus that stores in the Storage Media 340 and the multicast group that is participated in, and learns that user end apparatus 170 does not withdraw from the GROUP_2 of multicast group yet.Therefore, processor 320 can continue media stream server 140 is sent and point to the flow data STREAM_2 of the GROUP_2 of multicast group in the multicast transmission mode, is sent to flow data relay 110 in the unicast transmission mode by radio frequency module 310.After the radio frequency module 210 of flow data relay 110 is received flow data STREAM_2, control unit 220 can with flow data STREAM_2 with the unicast transmission mode by second too network connect the user end apparatus 170 that module 230 sends the still corresponding multicast GROUP_2 of group to.
When wireless gateway apparatus 120 receives that specific user's end device will withdraw from the notice of a specific multicast group, the processor 320 of wireless gateway apparatus 120 just can be checked the corresponding relation between user end apparatus that is write down in the Storage Media 340 and the multicast group that is participated in, and judges whether that user end apparatus that other and flow data relay 110 couple does not withdraw from this specific multicast group yet.Need only in the user end apparatus that couples with flow data relay 110, have any other user end apparatus (for example user end apparatus 170) not withdraw from this specific multicast group yet, the flow data that processor 320 will continue to point to this specific multicast group sends to flow data relay 110 in the unicast transmission mode.
Relatively, if original a plurality of user end apparatus of participating in this specific multicast group all withdraw from this specific multicast group, then processor 320 flow data that can stop to point to this specific multicast group is sent to flow data relay 110.
By as can be known aforementioned, when the certain customers' end device in a plurality of user end apparatus of participating in same multicast group withdraws from this multicast group, can not have influence on wireless gateway apparatus 120 and will send to the action of flow data relay 110 to flow data that should multicast group in the unicast transmission mode.Therefore, the media stream service of receiving of other user end apparatus that do not withdraw from this multicast group can't be interrupted to some extent.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (10)
1. flow data relay, it includes:
One radio frequency module is used for receiving the flow data that a wireless gateway apparatus sends in the unicast transmission mode;
One second too network connects module; And
One control unit, be used for this flow data with the unicast transmission mode by this second too network connect a plurality of user end apparatus that module sends corresponding same multicast group to;
Wherein when one first user end apparatus in these a plurality of user end apparatus requires to withdraw from this multicast group, this control unit can send the physical address of this first user end apparatus to this wireless gateway apparatus with wireless transmission method by this radio frequency module.
2. flow data relay as claimed in claim 1, wherein this control unit can be recorded in the physical address of this first user end apparatus one and withdraws from the multicast group message, and sends to this wireless gateway apparatus by this radio frequency module with wireless transmission method.
3. flow data relay as claimed in claim 2, wherein the physical address of this first user end apparatus is to be attached to the end that this withdraws from multicast group message.
4. flow data relay as claimed in claim 1, wherein this control unit can be recorded in the physical address of this first user end apparatus and meet second too in the management news frame of network communication protocol, and sends to this wireless gateway apparatus by this radio frequency module with wireless transmission method.
5. flow data relay as claimed in claim 1, wherein when this first user end apparatus requires to participate in this multicast group, this control unit can be recorded in the physical address of this first user end apparatus in the one multicast group members report message, and sends to this wireless gateway apparatus by this radio frequency module with wireless transmission method.
6. flow data relay as claimed in claim 1, wherein when this first user end apparatus requires to participate in this multicast group, this control unit can be recorded in the physical address of this first user end apparatus Fu Yi too in the management news frame of network communication protocol, and sends to this wireless gateway apparatus by this radio frequency module with wireless transmission method.
7. wireless gateway apparatus, it includes:
One communication interface is used for receiving the flow data that sends over and point to a multicast group in the multicast transmission mode;
One radio frequency module; And
One processor is used for this flow data is sent to and the first-class data relay device that a plurality of user end apparatus that should multicast group are coupled mutually by this radio frequency module in the unicast transmission mode;
Wherein when one first user end apparatus in these a plurality of user end apparatus requires to withdraw from this multicast group, as long as have any other user end apparatus not withdraw from this multicast group yet in these a plurality of user end apparatus, the flow data that this processor will continue to point to this multicast group is sent to this flow data relay in the unicast transmission mode by this radio frequency module.
8. wireless gateway apparatus as claimed in claim 7, wherein if this a plurality of user end apparatus all withdraw from this multicast group, then this processor can stop will the sensing this multicast group flow data be sent to this flow data relay.
9. wireless gateway apparatus as claimed in claim 7, wherein this radio frequency module can receive this flow data relay and transmits, and comprises the physical address of this user end apparatus and meets a too management news frame of network communication protocol of second.
10. wireless gateway apparatus as claimed in claim 7, wherein this radio frequency module can receive this flow data relay and transmits, comprise this user end apparatus physical address one withdraw from multicast group message.
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| CN201010135426XA CN102209300A (en) | 2010-03-30 | 2010-03-30 | Streaming data relay device and relevant wireless gateway device |
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| CN201010135426XA CN102209300A (en) | 2010-03-30 | 2010-03-30 | Streaming data relay device and relevant wireless gateway device |
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| US20060007930A1 (en) * | 2004-07-09 | 2006-01-12 | Dorenbosch Jheroen P | Downlink multicast method in wireless internet protocol system |
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