CN105392123A - Method and device for transmitting multimedia broadcast/multicast data - Google Patents
Method and device for transmitting multimedia broadcast/multicast data Download PDFInfo
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- CN105392123A CN105392123A CN201510784578.5A CN201510784578A CN105392123A CN 105392123 A CN105392123 A CN 105392123A CN 201510784578 A CN201510784578 A CN 201510784578A CN 105392123 A CN105392123 A CN 105392123A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- 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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/121—Wireless traffic scheduling for groups of terminals or users
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Abstract
Embodiments of the invention provide a method and a device for transmitting multimedia broadcast/multicast data. The method comprises the following step: a base station transmits multimedia broadcast/multicast service MBMS data to corresponding user equipment through a physical downlink shared channel PDSCH. According to the embodiments of the invention, the multimedia broadcast/multicast data is transmitted to the corresponding user equipment through the PDSCH. As there is no need to develop a special channel for MBMS, the development workload is alleviated, and the development complexity is reduced.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of transmission method and device of multimedia broadcast/multi broadcast data.
Background technology
Along with the continuous progress of the communication technology, Streaming Media, mobile phone network game, Online Music, the high-speed data services such as Large Copacity download become 3G (3rdGeneration, 3G (Third Generation) Moblie) development trend of business, in order to comply with the development trend of following high-speed data service, 3GPP (3rdGenerationPartnershipProject, third generation partner program) propose MBMS (MultimediaBroadcastMulticastService, multimedia broadcast/multi broadcast business), this business can not only realize classes of messages multicast and the broadcast of plain text low rate, broadcast and the multicast of high-speed multimedia service can also be realized, multiple abundant video is provided, audio frequency and multimedia service.
In LTE, MBMS is called as enhancement mode MBMS (E-MBMS), and E-MBMS realizes the low cost evolution from Release6, the broadcast/multi broadcast business of support of enhanced.PMCH (PhysicalMulticastChannel, Physical Multicast Channel) is the designated lane of MBMS transmission data in LTE.In actual applications, the existing scheme by PMCH MBMS transmission data at least can have following characteristics:
1, in order to strengthen the quorum sensing inhibitor of MBMS, PMCH is only at MBSFN (MulticastBroadcastSingleFrequencyNetwork, Multicast Broadcast Single Frequency Network) MBSFN region transport service data in subframe, wherein, MBSFN refers to and carry out multicast or broadcast on a Single Frequency Network;
2, in order to support that multiple cell merges, ExtendedCP (ExtendedCyclicPrefix, extended cyclic prefix) is used;
3, in order to reduce multi-path jamming, adopt proprietary RS (Referencesignal, reference signal), frequency domain increases the number of RS.
Can find out, for ensureing existingly can have above feature by designated lane (PMCH) MBMS transmission data, the workload of exploitation is very large, although designated lane can ensure to have higher transmission performance, but, the workload that independent exploitation has the designated lane of above-mentioned functions is but quite large, and development process has very high complexity.
Summary of the invention
In view of the above problems, propose a kind of transmission method and device of multimedia broadcast/multi broadcast data, to solve problem comparatively complicated by designated lane MBMS transmission data mining process in prior art, thus reduce workload and the complexity of exploitation.
In order to solve the problem, the embodiment of the invention discloses a kind of transmission method of multimedia broadcast/multi broadcast data, comprising:
Physical Downlink Shared Channel PDSCH is passed through by multimedia broadcast/multi broadcast business MBMS data transmission to corresponding subscriber equipment in base station.
Preferably, described method also comprises:
The zone identification information in the Multicast Broadcast Single Frequency Network MBSFN region, place, community served described base station, as unified cell identity information.
Preferably, described base station by Physical Downlink Shared Channel PDSCH by multimedia broadcast/multi broadcast business MBMS data transmission to the step of subscriber equipment, comprising:
According to described zone identification information, generate the reference signal corresponding with described zone identification information;
By described reference signal and MBMS data by PDSCH transmission to corresponding subscriber equipment.
Preferably, described method also comprises:
Described base station adopts the mode of inter-frequency networking to carry out networking to each community that described base station is served.
Preferably, described base station, by the step of Physical Downlink Shared Channel PDSCH by subscriber equipment extremely corresponding for multimedia broadcast/multi broadcast business MBMS data transmission, comprising:
Base station, by Physical Downlink Shared Channel PDSCH, adopts transmission diversity mode, by multimedia broadcast/multi broadcast business MBMS data transmission to corresponding subscriber equipment.
Preferably, described multimedia broadcast/multi broadcast business MBMS adopts the subcarrier spacing of conventional cyclic prefix and 15kHz.
According to another aspect of the present invention, provide a kind of transmitting device of multimedia broadcast/multi broadcast data, described transmitting device is positioned at base station side, and described transmitting device comprises:
Transport module, for passing through Physical Downlink Shared Channel PDSCH by multimedia broadcast/multi broadcast business MBMS data transmission to corresponding subscriber equipment.
Preferably, described device also comprises:
Cell ID generation module, for the zone identification information in Multicast Broadcast Single Frequency Network MBSFN region, place, community of being served described base station, as unified cell identity information.
Preferably, described transport module, comprising:
Reference signal generates submodule, for according to described zone identification information, generates the reference signal corresponding with described zone identification information;
First transmission submodule, for by described reference signal and MBMS data by PDSCH transmission to corresponding subscriber equipment.
Preferably, described device also comprises:
Networking module, carries out networking for adopting the mode of inter-frequency networking to each community that described base station is served.
Preferably, described transport module, comprising:
Second transmission submodule, for by Physical Downlink Shared Channel PDSCH, adopts transmission diversity mode, by multimedia broadcast/multi broadcast business MBMS data transmission to corresponding subscriber equipment.
Preferably, described multimedia broadcast/multi broadcast business MBMS adopts the subcarrier spacing of conventional cyclic prefix and 15kHz.
The embodiment of the present invention comprises following advantage:
The embodiment of the present invention by multimedia broadcast/multi broadcast data by PDSCH transmission to corresponding subscriber equipment, due to dedicated channel can not be developed for MBMS, therefore can alleviate the workload of exploitation, reduce exploitation complexity.
Accompanying drawing explanation
Fig. 1 shows the flow chart of steps of the transmission method embodiment two of a kind of multimedia broadcast/multi broadcast data of the present invention; And
Fig. 2 shows the structured flowchart of the transmitting device embodiment of a kind of multimedia broadcast/multi broadcast data of the present invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
One of core idea of the present invention is, utilize the PDSCH (PhysicalDownlinkSharedChannel of LTE, Physical Downlink Shared Channel) channel, by MBMS data transmission to corresponding subscriber equipment, so, for MBMS data exploitation dedicated channel, therefore can not can alleviate the workload of exploitation, reduce exploitation complexity.
Meanwhile, in order to ensure the transmission performance by PDSCH transmission MBMS data, the embodiment of the present invention is also improved physical layer, with when ensureing transmission performance, is realized the transmission of MBMS data by PDSCH channel.
Embodiment one
The transmission method embodiment one of a kind of multimedia broadcast/multi broadcast data of the present invention, specifically can comprise the steps:
Physical Downlink Shared Channel PDSCH is passed through by multimedia broadcast/multi broadcast business MBMS data transmission to corresponding subscriber equipment in base station.
In actual applications, base station can receive the MBMS data from the network equipment (such as equipment of the core network), and in the community that this base station is served, described MBMS data is sent to UE (UserEquipment, subscriber equipment) by PDSCH; Thus realize by Physical Downlink Shared Channel PDSCH transmitting multimedia broadcast/multicast service MBMS data between the network equipment and subscriber equipment.
In the conventional technology, PMCH channel is used at SFN (SingleFrequencyNetwork, Single Frequency Network) middle MBMS transmission, multiple communities in network send identical information on identical time and frequency band, and the signal that multiple community is sent can carry out diversity reception as multipath signal.PMCH handling process is carried out according to down physical channel basic handling flow process, follows following principle simultaneously: PMCH can only transmit on the MBSFN region of MBSFN sub-frame; PMCH only uses expansion CP to transmit.Can find out, the workload developing separately designated lane for MBMS is very large, and development process has very high complexity.
And PDSCH is the one in LTE physical down channel, be the downlink paths that LTE carries primary user data, it goes for all user data, and therefore the embodiment of the present invention can utilize PDSCH channel to carry out MBMS transmission data.Certainly, in actual applications, PDSCH channel can also carry other several data, and the embodiment of the present invention can utilize a part of resource in PDSCH channel to carry MBMS data.
To sum up, the embodiment of the present invention by multimedia broadcast/multi broadcast data by PDSCH transmission to corresponding subscriber equipment, due to dedicated channel can not be developed for MBMS, therefore can alleviate the workload of exploitation, reduce exploitation complexity.
Embodiment two
In the prior art, multiple community (cell) can be had in a MBSFN region, described multiple community is specifically as follows normal cells, each community has different cell identity information (cellID), but different districts uses different cell identity information easily to bring larger adjacent area interference.Therefore, in one preferred embodiment of the invention, said method can also comprise:
The zone identification information in the Multicast Broadcast Single Frequency Network MBSFN region, place, community served described base station, as unified cell identity information.
Also namely, all use the zone identification information in this MBSFN region as cell identity information in Zhong Ge community, same MBSFN region.
With reference to Fig. 1, show the flow chart of steps of the transmission method embodiment two of a kind of multimedia broadcast/multi broadcast data of the present invention, specifically can comprise:
Step 101, according to described zone identification information, generate the reference signal corresponding with described zone identification information;
In embodiments of the present invention, all use the zone identification information in this MBSFN region as cell identity information in Zhong Ge community, same MBSFN region, therefore, Zhong Ge community, same MBSFN region has identical cell identity information.Corresponding RS (ReferenceSignal, reference signal) can be generated according to this cell identity information.Wherein, RS can be used for channel estimating and correlation demodulation, because identical cell identity information generates identical RS, therefore, can solve different districts in prior art uses different cell identity information easily to bring the problem of larger adjacent area interference, thus can reduce adjacent area interference
Step 102, by described reference signal and MBMS data by PDSCH transmission to corresponding subscriber equipment.
In embodiments of the present invention, when subscriber equipment processes different RE (resource particle) mapping position of descending RS in the MBSFN subframe, replace cell identity information with the zone identification information in MBSFN region.Wherein, descending RS is in units of RE, and namely a reference signal takies a RE.Wherein, each RE position represents a frequency-domain and time-domain unit, in RS and MBMS data transmission process, can be transmitted by same subframe and same port.
Embodiment of the present invention Zhong Ge community uses identical cell identity information, identical reference signal RS can be generated according to identical cell identity information, use different cell identity information easily to bring larger adjacent area interference relative to different districts in prior art, the embodiment of the present invention can reduce adjacent area interference.
Embodiment three
The present embodiment, on the basis of above-described embodiment one, can also comprise the steps:
Described base station adopts the mode of inter-frequency networking to carry out networking to each community that described base station is served.
In a particular application, because MBMS radius of society is much larger than normal cells, and need multiple cell to merge, therefore need to strengthen CP length, also namely use extended cyclic prefix (expansion CP), and subcarrier width is reduced, avoid spectrum efficiency to reduce., move because MBMS is mainly used in low speed meanwhile, need to adopt less subcarrier spacing, such as, usually adopt MBMS subcarrier spacing to be 7.5kHz, CP length increases to 33.33us simultaneously.But in actual applications, the subcarrier spacing standard of LTE chip support is generally 15kHz, and usually adopt normalCP (conventional CP), therefore, need extra development with the subcarrier spacing making LTE chip support 7.5kHz, and strengthen CP length.In order to reduce workload and the complexity of development process, can on the basis not changing original LTE chip, support larger cell range, in one preferred embodiment of the invention, still the subcarrier spacing of 15kHz and conventional CP is adopted in physical layer, in order to reduce the performance loss that multipath brings, the mode of inter-frequency networking can be selected when frequency spectrum resource reprovision.
In the embodiment of the present invention, directly can use existing LTE chip, thus reduce exploitation complexity; In addition, the mode of inter-frequency networking is adopted, the radius of society that can also increase support and the interference reduced between neighbor cell.
Embodiment four
The present embodiment is on the basis of above-described embodiment one, and described base station, by the step of Physical Downlink Shared Channel PDSCH by subscriber equipment extremely corresponding for multimedia broadcast/multi broadcast business MBMS data transmission, specifically can comprise:
Base station, by Physical Downlink Shared Channel PDSCH, adopts transmission diversity mode, by multimedia broadcast/multi broadcast business MBMS data transmission to corresponding subscriber equipment.
In actual applications, the downlink transfer pattern (TransmissionMode, TM) of LTER9 mainly comprises TM1-TM8, existing MBSFN transmission means only supports TM1 transmission mode, wherein, TM1 transmission mode, by single antenna port transmission, is mainly used in the occasion of single antenna transmissions.Namely in multiple cells, each base-station node, to sending a circuit-switched data, is transferred to user equipment (UE) and then can carries out multiple cell merging, to obtain diversity gain.
And in the embodiment of the present invention, TM2 transmission mode can be supported.Wherein, TM2 transmission mode is transmitting diversity pattern, is suitable for cell edge channel situation more complicated, disturbs larger situation, and sometimes also for situation at a high speed, diversity can provide diversity gain.In TM2 transmission mode, a base station can send the same data of multichannel, is transferred to user equipment (UE) and then can carries out diversity reception.Because the embodiment of the present invention can adopt the mode of inter-frequency networking, therefore the frequency of neighbor cell is not identical, is unsuitable for carrying out multiple cell merging, therefore, in order to ensure transmission performance, the present invention adopts the method supporting TM2 transmission mode in this community, to obtain diversity gain.
To sum up, existing PMCH channel once develop, is then fixed and can not be revised, lack flexibility in actual use.Therefore, the present invention has done corresponding improvement to physical layer, specifically can comprise:
Each community of improvement one, the service of described base station uses identical cell identity information;
The mode of inter-frequency networking is adopted to carry out networking between each community of improvement two, the service of described base station;
Improve three, in the process of the subscriber equipment that multimedia broadcast/multi broadcast business MBMS data transmission is extremely corresponding, adopt transmission diversity mode to transmit.
By the above-mentioned improvement done physical layer, the embodiment of the present invention achieves at PDSCH transmission MBMS, while reducing exploitation complexity, improves transmission performance and flexibility.
It should be noted that, for embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the embodiment of the present invention is not by the restriction of described sequence of movement, because according to the embodiment of the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and involved action might not be that the embodiment of the present invention is necessary.
Device embodiment
With reference to Fig. 2, show the structured flowchart of the transmitting device embodiment of a kind of multimedia broadcast/multi broadcast data of the present invention, described transmitting device is positioned at base station side, and described transmitting device specifically can comprise:
Transport module 210, for passing through Physical Downlink Shared Channel PDSCH by multimedia broadcast/multi broadcast business MBMS data transmission to corresponding subscriber equipment.
In one preferred embodiment of the invention, described device can also comprise:
Cell ID generation module 220, for the zone identification information in Multicast Broadcast Single Frequency Network MBSFN region, place, community of being served described base station, as unified cell identity information.
In another preferred embodiment of the invention, described transport module 210, specifically can comprise:
Reference signal generates submodule 211, for according to described zone identification information, generates the reference signal corresponding with described zone identification information;
First transmission submodule 212, for by described reference signal and MBMS data by PDSCH transmission to corresponding subscriber equipment.
In another preferred embodiment of the present invention, described device can also comprise:
Networking module 230, carries out networking for adopting the mode of inter-frequency networking to each community that described base station is served.
In another preferred embodiment of the present invention, described transport module 210, specifically can comprise:
Second transmission submodule 213, for by Physical Downlink Shared Channel PDSCH, adopts transmission diversity mode, by multimedia broadcast/multi broadcast business MBMS data transmission to corresponding subscriber equipment.
In another preferred embodiment of the present invention, described multimedia broadcast/multi broadcast business MBMS adopts the subcarrier spacing of conventional cyclic prefix and 15kHz.
For device embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Those skilled in the art should understand, the embodiment of the embodiment of the present invention can be provided as method, device or computer program.Therefore, the embodiment of the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the embodiment of the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The embodiment of the present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, terminal equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing terminal equipment to produce a machine, making the instruction performed by the processor of computer or other programmable data processing terminal equipment produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing terminal equipment, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded on computer or other programmable data processing terminal equipment, make to perform sequence of operations step to produce computer implemented process on computer or other programmable terminal equipment, thus the instruction performed on computer or other programmable terminal equipment is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although described the preferred embodiment of the embodiment of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of embodiment of the present invention scope.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or terminal equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or terminal equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the terminal equipment comprising described key element and also there is other identical element.
Above to transmission method and the device of a kind of multimedia broadcast/multi broadcast data provided by the present invention, be described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1. a transmission method for multimedia broadcast/multi broadcast data, is characterized in that, comprising:
Physical Downlink Shared Channel PDSCH is passed through by multimedia broadcast/multi broadcast business MBMS data transmission to corresponding subscriber equipment in base station.
2. method according to claim 1, is characterized in that, described method also comprises:
The zone identification information in the Multicast Broadcast Single Frequency Network MBSFN region, place, community served described base station, as unified cell identity information.
3. method according to claim 2, is characterized in that, described base station by Physical Downlink Shared Channel PDSCH by multimedia broadcast/multi broadcast business MBMS data transmission to the step of subscriber equipment, comprising:
According to described zone identification information, generate the reference signal corresponding with described zone identification information;
By described reference signal and MBMS data by PDSCH transmission to corresponding subscriber equipment.
4. method according to claim 1, is characterized in that, described method also comprises:
Described base station adopts the mode of inter-frequency networking to carry out networking to each community that described base station is served.
5. method according to claim 1, is characterized in that, described base station, by the step of Physical Downlink Shared Channel PDSCH by subscriber equipment extremely corresponding for multimedia broadcast/multi broadcast business MBMS data transmission, comprising:
Base station, by Physical Downlink Shared Channel PDSCH, adopts transmission diversity mode, by multimedia broadcast/multi broadcast business MBMS data transmission to corresponding subscriber equipment.
6. method according to claim 1, is characterized in that, described multimedia broadcast/multi broadcast business MBMS adopts the subcarrier spacing of conventional cyclic prefix and 15kHz.
7. a transmitting device for multimedia broadcast/multi broadcast data, is characterized in that, described transmitting device is positioned at base station side, and described transmitting device comprises:
Transport module, for passing through Physical Downlink Shared Channel PDSCH by multimedia broadcast/multi broadcast business MBMS data transmission to corresponding subscriber equipment.
8. device according to claim 7, is characterized in that, described device also comprises:
Cell ID generation module, for the zone identification information in Multicast Broadcast Single Frequency Network MBSFN region, place, community of being served described base station, as unified cell identity information.
9. device according to claim 8, is characterized in that, described transport module, comprising:
Reference signal generates submodule, for according to described zone identification information, generates the reference signal corresponding with described zone identification information;
First transmission submodule, for by described reference signal and MBMS data by PDSCH transmission to corresponding subscriber equipment.
10. device according to claim 7, is characterized in that, described device also comprises:
Networking module, carries out networking for adopting the mode of inter-frequency networking to each community that described base station is served.
11. devices according to claim 7, is characterized in that, described transport module, comprising:
Second transmission submodule, for by Physical Downlink Shared Channel PDSCH, adopts transmission diversity mode, by multimedia broadcast/multi broadcast business MBMS data transmission to corresponding subscriber equipment.
12. devices according to claim 7, is characterized in that, described multimedia broadcast/multi broadcast business MBMS adopts the subcarrier spacing of conventional cyclic prefix and 15kHz.
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| CN115243201A (en) * | 2021-04-23 | 2022-10-25 | 大唐移动通信设备有限公司 | Multicast implementation method and device |
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| US20090225693A1 (en) * | 2002-09-23 | 2009-09-10 | Seung June Yi | Radio communication scheme for providing multimedia broadcast and multicast services (mbms) |
| CN101742427A (en) * | 2008-11-19 | 2010-06-16 | 华为技术有限公司 | Method, device and system for sending, receiving and transmitting business data |
| US20140022975A1 (en) * | 2011-03-31 | 2014-01-23 | China Academy Of Telecommunications Technology | Method and apparatus for transmitting downlink data |
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| US20090225693A1 (en) * | 2002-09-23 | 2009-09-10 | Seung June Yi | Radio communication scheme for providing multimedia broadcast and multicast services (mbms) |
| CN101742427A (en) * | 2008-11-19 | 2010-06-16 | 华为技术有限公司 | Method, device and system for sending, receiving and transmitting business data |
| US20140022975A1 (en) * | 2011-03-31 | 2014-01-23 | China Academy Of Telecommunications Technology | Method and apparatus for transmitting downlink data |
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| CN107734467A (en) * | 2016-08-11 | 2018-02-23 | 株式会社Kt | Single subdistrict multi-case data method of reseptance and its device |
| CN107734467B (en) * | 2016-08-11 | 2021-06-04 | 株式会社Kt | Single cell multicast data receiving method and device |
| CN115243201A (en) * | 2021-04-23 | 2022-10-25 | 大唐移动通信设备有限公司 | Multicast implementation method and device |
| CN115243201B (en) * | 2021-04-23 | 2023-10-31 | 大唐移动通信设备有限公司 | Multicast realization method and device |
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Address after: Room B2-501, 198 Kaidi Road, Xiaoshan Economic and Technological Development Zone, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Boxin Zhilian Technology Co.,Ltd. Address before: 100080, 12 Zhongguancun Avenue, E World Fortune Center, 11 Zhongguancun Avenue, Haidian District, Beijing. Patentee before: Beijing Boxin Zhaopin Technology Co.,Ltd. Address after: 100080, 12 Zhongguancun Avenue, E World Fortune Center, 11 Zhongguancun Avenue, Haidian District, Beijing. Patentee after: Beijing Boxin Zhaopin Technology Co.,Ltd. Address before: Room 1802, Building 8, Courtyard 1, Zhongguancun East Road, Haidian District, Beijing 100084 Patentee before: BEIJING BOXIN SHITONG TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 353, block a, No.79, Jinyi Road, Xiaoshan Economic and Technological Development Zone, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: Newpoint Enterprise Management Group Co.,Ltd. Address before: Room B2-501, 198 Kaidi Road, Xiaoshan Economic and Technological Development Zone, Hangzhou City, Zhejiang Province Patentee before: Hangzhou Boxin Zhilian Technology Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 353, block a, No.79, Jinyi Road, Xiaoshan Economic and Technological Development Zone, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: Newpoint Intelligent Technology Group Co.,Ltd. Address before: 353, block a, No.79, Jinyi Road, Xiaoshan Economic and Technological Development Zone, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee before: Newpoint Enterprise Management Group Co.,Ltd. |