CN101827315A - Method, device and system for transmitting data - Google Patents
Method, device and system for transmitting data Download PDFInfo
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- CN101827315A CN101827315A CN200910118390A CN200910118390A CN101827315A CN 101827315 A CN101827315 A CN 101827315A CN 200910118390 A CN200910118390 A CN 200910118390A CN 200910118390 A CN200910118390 A CN 200910118390A CN 101827315 A CN101827315 A CN 101827315A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The embodiment of the invention discloses a method, a device and a system for transmitting data. In the invention, the method comprises the steps of: transmitting continuous explore frames within a duration, wherein the explore frames carry addresses or identifiers of all receiving devices; transmitting data frames to the all receiving devices after finishing the transmission of all explore frames. Correspondingly, the embodiment of the invention also provides a communication device and a system for transmitting data. By the embodiment of the invention, a transmitting device can transmit data frames to different receiving devices by only transmitting continuous explore frames once, thus the network resource can be saved, and the timeliness of receiving information of the receiving device is improved. The invention can be applied to a wireless personal domain network.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of methods, devices and systems that send data.
Background technology
Wireless personal area network (WPAN, Wireless Personal Area Network) is meant by some close equipment of distance forms individual domain network, the network that communicates with wireless mode between the equipment in individual domain network.Generally speaking, most equipment is a battery supply set in the WPAN network, so equipment and the network energy consumption will as far as possible reduce work the time.
Generally speaking, the equipment in the WPAN network is monitored once the information from other equipment at set intervals.Monitoring is a kind of mode of equipment receiving information, by the listening period interval of each equipment decision oneself, promptly monitors sequential, and the time interval between adjacent twice monitoring is fixed.Equipment keeps non-active state between twice monitoring, promptly can not send and receive information.
If transmitting apparatus will send information to receiving equipment, then in a period of time, send continuous explore frame earlier, have the address of receiving equipment in the explore frame.And then transmitting apparatus sends information to receiving equipment after sending continuous explore frame, this information generally sends with the form of Frame.Receiving equipment keeps active state to wait for and receives the information that transmitting apparatus sends behind the explore frame that listens to the transmitting apparatus transmission.After receiving equipment was received the Frame of transmitting apparatus transmission, if do not have new information to send or reception, transmitting apparatus and receiving equipment recovered original monitoring sequential.
In realizing process of the present invention, the inventor finds prior art, and there are the following problems at least:
Transmitting apparatus will send information to a plurality of receiving equipments, then must send continuous probe frame and Frame earlier to one of them receiving equipment, waits this receiving equipment to receive, and the information that could send in an identical manner is to another receiving equipment.This mode has not only been wasted Internet resources, and has reduced the ageing of receiving equipment reception information.
Summary of the invention
The embodiment of the invention provides a kind of methods, devices and systems that send data, can save Internet resources, improves receiving equipment and receives the ageing of information.
Particularly, the method for the transmission data that the embodiment of the invention provides comprises: send continuous explore frame in a period of time, wherein, carry the address or the sign of all receiving equipments in the described explore frame; After sending described explore frame, send Frame to described all receiving equipments.
The communication equipment that the embodiment of the invention provides comprises: generation unit, be used to generate explore frame, and wherein, comprise the address or the sign of all receiving equipments in the described explore frame; The explore frame transmitting element is used for sending the explore frame that continuous described generation unit generates in a period of time; The Frame transmitting element is used for after the explore frame transmitting element sends described explore frame, the address of all receiving equipments that comprise in described explore frame or identify indicated receiving equipment and send Frame.
The system of the transmission data that the embodiment of the invention provides, comprise transmitting apparatus and more than one receiving equipment, described transmitting apparatus, be used in a period of time, sending continuous explore frame, wherein, carry the address or the sign of all receiving equipments in the described explore frame, after sending described explore frame, send Frame to described all receiving equipments; Described receiving equipment is used to monitor the described explore frame that transmitting apparatus sends, if address that described explore frame carries or sign comprise self address or sign, then keeps active state to wait for and receives the Frame that described transmitting apparatus sends.
The technical scheme that is provided by the above embodiment of the invention as can be known, if transmitting apparatus will send information to a plurality of receiving equipments, by the address or the sign of in explore frame, carrying all receiving equipments, then need only send the explore frame of one-time continuous, can send Frame to different receiving equipments according to different situations, and need not to send repeatedly the continuous probe frame to different receiving equipments.Therefore can save Internet resources, can improve receiving equipment simultaneously and receive the ageing of information.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Send the schematic diagram one of data method in the wireless personal area network that Fig. 1 provides for the embodiment of the invention;
Send the schematic diagram two of data method in the wireless personal area network that Fig. 2 provides for the embodiment of the invention;
A kind of structural representation of the communication equipment in the wireless personal area network that Fig. 3 provides for the embodiment of the invention;
The structural representation of the transmission data system in a kind of wireless personal area network that Fig. 4 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Figure 1 shows that the schematic diagram one that sends data method in the wireless personal area network that the embodiment of the invention provides, as shown in Figure 1, if transmitting apparatus will send information to a plurality of receiving equipments, these information can be the same or different, then transmitting apparatus sends continuous explore frame, the address list or the identical sign of other any effects of carrying all receiving equipments in these explore frames earlier in a period of time.
The equipment that listens to these explore frames judges whether that according to the address or the sign of wherein carrying this transmitting apparatus will send information to oneself, be address or the sign that whether comprises oneself in explore frame address of carrying or the sign, if, promptly this equipment is one of receiving equipment, then keeps active state to wait for and receives the information that transmitting apparatus sends; If not, then ignore these explore frames.
After transmitting apparatus sent the continuous probe frame, and then the mode with clean culture sent information to each receiving equipment successively, and this information generally sends with the form of Frame, and each Frame only contains the address of a receiving equipment.
After receiving equipment reception information finishes,, then recover original monitoring sequential if do not listen to new explore frame also without any the transmission demand.Transmitting apparatus if also do not listen to explore frame without any the transmission demand, then recovers original monitoring sequential after all receiving equipment transmission information finish.
Figure 2 shows that the schematic diagram two that sends data method in the wireless personal area network that the embodiment of the invention provides, as shown in Figure 2, if transmitting apparatus will send identical information to a plurality of receiving equipments, then transmitting apparatus sends continuous explore frame earlier in a period of time, has the multicast address or the identical sign of other any effects of all receiving equipments in these explore frames.
The equipment that listens to these explore frames judges whether that according to the multicast address or the sign of wherein carrying this transmitting apparatus will send information to oneself, if promptly this equipment is one of receiving equipment, then keeps active state to wait for and receives the information that transmitting apparatus sends; If not, then ignore these explore frames.
After transmitting apparatus sends the continuous probe frame, and then send information with all receiving equipments of multicast mode in multicast address, this information generally sends with the form of Frame, be that transmitting apparatus sends Frame, this Frame has the multicast address or the identical sign of other any effects of all receiving equipments.
After transmitting apparatus transmission information finishes,, then recover original monitoring sequential if also do not listen to explore frame without any the transmission demand.After receiving equipment reception information finishes,, then recover original monitoring sequential if do not listen to new explore frame also without any the transmission demand.
Sending data method in the another kind of wireless personal area network that the embodiment of the invention provides is: if transmitting apparatus will send information to a plurality of receiving equipments, for example, wherein information A will send to receiving equipment A1, A2 and A3, information B will send to receiving equipment B, information C will send to receiving equipment C, then transmitting apparatus sends continuous explore frame earlier in a period of time, has address or the identical sign of other any effects of A1, A2, A3, B and C in these explore frames.
The equipment that listens to these explore frames judges whether that according to the address or the sign of wherein carrying this transmitting apparatus will send information to oneself, if promptly this equipment is one of receiving equipment, then keeps active state to wait for and receives the information that transmitting apparatus sends; If not, then ignore these explore frames.
After transmitting apparatus sends the continuous probe frame, and then send information A with multicast mode to receiving equipment A1, A2 and A3, information A generally sends with the form of Frame, be that transmitting apparatus sends Frame, this Frame can have address or the identical sign of other any effects of A1, A2 and A3.After transmitting apparatus sends Frame with multicast mode, and then the mode with clean culture sends information B and sends information C to receiving equipment C to receiving equipment B successively, information B and C generally send with the form of Frame, the Frame that sends to receiving equipment B only contains the address of receiving equipment B, and the Frame that sends to receiving equipment C only contains the address of receiving equipment C.
Need to prove, transmitting apparatus sends the order of each multicast packet frame and unicast data frames and can change arbitrarily, for example can be earlier send information B and send information C to receiving equipment B successively, send information A with multicast mode to receiving equipment A1, A2 and A3 again to receiving equipment C in the mode of clean culture; Perhaps, can be earlier send information B to receiving equipment B, send information A with multicast mode to receiving equipment A1, A2 and A3 then, send information C in the mode of clean culture to receiving equipment C more at last in the mode of clean culture.
After receiving equipment reception information finishes,, then recover original monitoring sequential if do not listen to new explore frame also without any the transmission demand.Transmitting apparatus if also do not listen to explore frame without any the transmission demand, then recovers original monitoring sequential after all receiving equipment transmission information finish.
Sending data method in another wireless personal area network that the embodiment of the invention provides is: if transmitting apparatus wants broadcast message to the equipment in the network, then transmitting apparatus sends continuous explore frame earlier in a period of time, has broadcast address or the identical sign of other any effects in these explore frames.
The equipment that listens to these explore frames keeps active state to wait for receiving broadcasting information.
After transmitting apparatus sent the continuous probe frame, and then all devices of mode in network with broadcasting sent information, and this information generally sends with the form of Frame, promptly contains broadcast address or the identical sign of other any effects in the Frame.
After equipment receiving information in the network finishes,, then recover original monitoring sequential if do not listen to new explore frame also without any the transmission demand.After transmitting apparatus transmission information finishes,, then recover original monitoring sequential if also do not listen to explore frame without any the transmission demand.
By above method embodiment as can be known, if transmitting apparatus will send information to a plurality of receiving equipments, by the address or the sign of in explore frame, carrying all receiving equipments, then need only send the explore frame of one-time continuous, can be according to different situations, mode with clean culture, multicast or broadcasting sends Frame to different receiving equipments, and need not to send repeatedly the continuous probe frame to different receiving equipments.Therefore can save Internet resources, can improve receiving equipment simultaneously and receive the ageing of information.
As shown in Figure 3, the embodiment of the invention also provides the communication equipment in a kind of wireless personal area network, comprising:
Explore frame transmitting element 32 is used for sending the explore frame that continuous described generation unit 31 generates in a period of time;
Wherein, described generation unit 31 specifically comprises following wherein arbitrary module or combination arbitrarily:
Generation module one is used to generate the address list that comprises all receiving equipments or the explore frame of sign;
Generation module two is used to generate the multicast address that comprises receiving equipment or the explore frame of sign;
Generation module three is used to generate the explore frame that comprises receiving equipment broadcast address or sign.
Described Frame transmitting element 33 specifically comprises following wherein arbitrary module or combination arbitrarily:
Clean culture sending module 331 is used for the described address list that comprises to described explore frame successively in the mode of clean culture or identifies each indicated receiving equipment sending Frame;
A kind of embodiment, described explore frame transmitting element 32 send continuous explore frame in a period of time, wherein, carry the address list or the sign of all receiving equipments in the described explore frame; After sending described explore frame, described Frame transmitting element 33 uses clean culture sending modules 331 to send Frame in the mode of clean culture each receiving equipment in described address list or sign successively.
A kind of embodiment, described explore frame transmitting element 32 send continuous explore frame in a period of time, wherein, carry the multicast address or the sign of all receiving equipments in the described explore frame; After sending described explore frame, described Frame transmitting element 33 uses multicast sending module 332 to send Frames with multicast mode while all receiving equipments in described multicast address or sign.
A kind of embodiment, described explore frame transmitting element 32 send continuous explore frame in a period of time, wherein, carry address list or sign and the multicast address or the sign of all receiving equipments in the described explore frame; After sending described explore frame, described Frame transmitting element 33 uses clean culture sending modules 331 to send Frame in the mode of clean culture each receiving equipment in described address list or sign successively, use multicast sending module 332 to send Frames with multicast mode while all receiving equipments in described multicast address or sign, wherein the sending order of clean culture sending module 331 and multicast sending module 332 can be changed arbitrarily.
Another embodiment, described explore frame transmitting element 32 send continuous explore frame in a period of time, wherein, carry the broadcast address or the sign of all receiving equipments in the described explore frame; After sending described explore frame, described Frame transmitting element 33 uses broadcast transmission module 333 to send Frames with mode while all receiving equipments in described broadcast address or sign of broadcasting.
Communication equipment in the wireless personal area network that the embodiment of the invention provides, if will send information to a plurality of receiving equipments, comprise the address of all receiving equipments or the explore frame of sign by the generation unit generation, the explore frame that need only the explore frame transmitting element sends one-time continuous, can be according to different situations, send Frame to different receiving equipments by the Frame transmitting element in the mode of clean culture, multicast or broadcasting, and need not to send repeatedly the continuous probe frame to different receiving equipments.Therefore can save Internet resources, can improve receiving equipment simultaneously and receive the ageing of information.
Referring to Fig. 4, the embodiment of the invention also provides the system of the transmission data in a kind of wireless personal area network, comprises transmitting apparatus and more than one receiving equipment,
Described transmitting apparatus was used for sending continuous explore frame in a period of time, wherein, carried the address or the sign of all receiving equipments in the described explore frame, after sending described explore frame, sent Frame to described all receiving equipments;
Described receiving equipment, be used to monitor the described explore frame that transmitting apparatus sends, comprise according to judging whether,, then keep active state to wait for and receive the Frame that described transmitting apparatus sends if address that described explore frame carries or sign comprise self address or sign.
Particularly, described transmitting apparatus can comprise:
Explore frame transmitting element 32 is used for sending the explore frame that continuous described generation unit generates in a period of time;
Wherein, described generation unit 31, specifically comprise following wherein arbitrary module or combination arbitrarily: generation module one is used to generate the address list that comprises all receiving equipments or the explore frame of sign; Generation module two is used to generate the multicast address that comprises receiving equipment or the explore frame of sign; Generation module three is used to generate the explore frame that comprises receiving equipment broadcast address or sign.
Wherein, described Frame transmitting element 33 specifically comprises following wherein arbitrary module or combination arbitrarily:
Clean culture sending module 331 is used for the described address list that comprises to described explore frame successively in the mode of clean culture or identifies each indicated receiving equipment sending Frame; Multicast sending module 332 is used for the described multicast address that comprises to described explore frame with multicast mode or identifies all indicated receiving equipments sending Frames; Broadcast transmission module 333, the described broadcast address that the mode with broadcasting that is used for comprises to described explore frame or identify all indicated receiving equipments and send Frames.
A kind of embodiment, described transmitting apparatus sends continuous explore frame in a period of time, in described explore frame, carry the address list or the sign of all receiving equipments, after sending described explore frame, send Frame in the mode of clean culture each receiving equipment in described address list or sign successively.
A kind of embodiment, described transmitting apparatus sends continuous explore frame in a period of time, in described explore frame, carry the multicast address or the sign of all receiving equipments, after sending described explore frame, send Frames with multicast mode while all receiving equipments in described multicast address or sign.
A kind of embodiment, described transmitting apparatus sends continuous explore frame in a period of time, in described explore frame, carry address list or sign and the multicast address or the sign of all receiving equipments, after sending described explore frame, send Frame in the mode of clean culture each receiving equipment in described address list or sign successively, send Frames with multicast mode while all receiving equipments in described multicast address or sign, wherein the sending order of each multicast packet frame and unicast data frames can be changed arbitrarily.
Another embodiment, described transmitting apparatus sends continuous explore frame in a period of time, in described explore frame, carry the broadcast address or the sign of all receiving equipments, after sending described explore frame, with mode while all receiving equipments transmission Frames in described broadcast address or sign of broadcasting.
In the wireless personal area network that the embodiment of the invention provides the system of transmission data, if transmitting apparatus will send information to a plurality of receiving equipments, by the address or the sign of in explore frame, carrying all receiving equipments, then need only send the explore frame of one-time continuous, can send Frame to different receiving equipments in the mode of clean culture, multicast or broadcasting according to different situations, and need not to send repeatedly the continuous probe frame to different receiving equipments.Therefore can save Internet resources, can improve receiving equipment simultaneously and receive the ageing of information.
Need to prove that the form that the method in the embodiment of the invention can software function module realizes, and this software function module can be stored in also in the computer read/write memory medium as production marketing independently or when using.The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
Each functional unit in the embodiment of the invention can be integrated in the processing module, also can be that the independent physics in each unit exists, and also can be integrated in the module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
Above-mentioned specific embodiment is not in order to restriction the present invention; for those skilled in the art; all under the prerequisite that does not break away from the principle of the invention, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a method that sends data is characterized in that, comprising:
In a period of time, send continuous explore frame, wherein, carry the address or the sign of all receiving equipments in the described explore frame;
After sending described explore frame, send Frame to described all receiving equipments.
2. method according to claim 1 is characterized in that, the address of described all receiving equipments or be designated following wherein a kind of or combination in any: the address list of all receiving equipments or sign, multicast address or sign, broadcast address or sign.
3. method according to claim 2 is characterized in that, describedly sends Frames to all receiving equipments and comprises: send Frame in the mode of clean culture each receiving equipment in described address list or sign successively.
4. method according to claim 2 is characterized in that, describedly sends Frames to all receiving equipments and comprises: with multicast mode simultaneously all receiving equipments in described multicast address or sign send Frames.
5. method according to claim 2 is characterized in that, describedly sends Frames to all receiving equipments and comprises: send Frame in the mode of clean culture each receiving equipment in described address list or sign successively; Send Frames with multicast mode while all receiving equipments in described multicast address or sign.
6. method according to claim 2 is characterized in that, describedly sends Frames to all receiving equipments and comprises: with the mode of broadcasting simultaneously all receiving equipments in described broadcast address or sign send Frames.
7. a communication equipment is characterized in that, comprising:
Generation unit is used to generate explore frame, wherein, comprises the address or the sign of all receiving equipments in the described explore frame;
The explore frame transmitting element is used for sending the explore frame that continuous described generation unit generates in a period of time;
The Frame transmitting element is used for after the explore frame transmitting element sends described explore frame, the address of all receiving equipments that comprise in described explore frame or identify indicated receiving equipment and send Frame.
8. transmitting apparatus according to claim 7 is characterized in that, described generation unit specifically comprises following wherein arbitrary module or combination arbitrarily:
Generation module one is used to generate the address list that comprises all receiving equipments or the explore frame of sign;
Generation module two is used to generate the multicast address that comprises receiving equipment or the explore frame of sign;
Generation module three is used to generate the explore frame that comprises receiving equipment broadcast address or sign.
9. transmitting apparatus according to claim 7 is characterized in that, described Frame transmitting element specifically comprises following wherein arbitrary module or combination arbitrarily:
The clean culture sending module is used for the described address list that comprises to described explore frame successively in the mode of clean culture or identifies each indicated receiving equipment sending Frame;
The multicast sending module is used for the described multicast address that comprises to described explore frame with multicast mode or identifies all indicated receiving equipments sending Frames;
The broadcast transmission module, the described broadcast address that the mode with broadcasting that is used for comprises to described explore frame or identify all indicated receiving equipments and send Frames.
10. a system that sends data is characterized in that, comprises transmitting apparatus and more than one receiving equipment,
Described transmitting apparatus is used for sending continuous explore frame in a period of time, the address or the sign of carrying all receiving equipments in the wherein said explore frame after sending described explore frame, send Frame to described all receiving equipments;
Described receiving equipment is used to monitor the described explore frame that transmitting apparatus sends, if address that described explore frame carries or sign comprise self address or sign, then keeps active state to wait for and receives the Frame that described transmitting apparatus sends.
11. system according to claim 10 is characterized in that, described transmitting apparatus specifically comprises:
Generation unit is used to generate explore frame, wherein, comprises the address or the sign of all receiving equipments in the described explore frame;
The explore frame transmitting element is used for sending the explore frame that continuous described generation unit generates in a period of time;
The Frame transmitting element is used for after the explore frame transmitting element sends described explore frame, the address of all receiving equipments that comprise in described explore frame or identify indicated receiving equipment and send Frame.
12. system according to claim 11 is characterized in that, described generation unit specifically comprises following wherein arbitrary module or combination arbitrarily:
Generation module one is used to generate the address list that comprises all receiving equipments or the explore frame of sign;
Generation module two is used to generate the multicast address that comprises receiving equipment or the explore frame of sign;
Generation module three is used to generate the explore frame that comprises receiving equipment broadcast address or sign.
13. system according to claim 11 is characterized in that, described Frame transmitting element specifically comprises following wherein arbitrary module or combination arbitrarily:
The clean culture sending module is used for the described address list that comprises to described explore frame successively in the mode of clean culture or identifies each indicated receiving equipment sending Frame;
The multicast sending module is used for the described multicast address that comprises to described explore frame with multicast mode or identifies all indicated receiving equipments sending Frames;
The broadcast transmission module, the described broadcast address that the mode with broadcasting that is used for comprises to described explore frame or identify all indicated receiving equipments and send Frames.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910118390.1A CN101827315B (en) | 2009-03-05 | 2009-03-05 | Method, device and system for transmitting data |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910118390.1A CN101827315B (en) | 2009-03-05 | 2009-03-05 | Method, device and system for transmitting data |
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| CN101827315A true CN101827315A (en) | 2010-09-08 |
| CN101827315B CN101827315B (en) | 2014-04-30 |
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| CN200910118390.1A Active CN101827315B (en) | 2009-03-05 | 2009-03-05 | Method, device and system for transmitting data |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9774464B2 (en) | 2013-03-06 | 2017-09-26 | Huawei Technologies Co., Ltd. | Multicast packet transmission method, and apparatus |
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| CN1184751C (en) * | 1997-11-18 | 2005-01-12 | 国际商业机器公司 | Method for improved wireless optical communication and frames for use in wireless optical communication system ` |
| CN1307828C (en) * | 2004-08-10 | 2007-03-28 | 华为技术有限公司 | Method for building bearing in multimedia broadcast/multicast service |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9774464B2 (en) | 2013-03-06 | 2017-09-26 | Huawei Technologies Co., Ltd. | Multicast packet transmission method, and apparatus |
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