CN112929070A - Data broadcasting system and method - Google Patents
Data broadcasting system and method Download PDFInfo
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- CN112929070A CN112929070A CN201911244142.1A CN201911244142A CN112929070A CN 112929070 A CN112929070 A CN 112929070A CN 201911244142 A CN201911244142 A CN 201911244142A CN 112929070 A CN112929070 A CN 112929070A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18523—Satellite systems for providing broadcast service to terrestrial stations, i.e. broadcast satellite service
- H04B7/18526—Arrangements for data linking, networking or transporting, or for controlling an end to end session
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
- H04L65/611—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for multicast or broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/163—In-band adaptation of TCP data exchange; In-band control procedures
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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
Abstract
The embodiment of the invention provides a data broadcasting system and a data broadcasting method. The data broadcasting system comprises a differential resolving device, multicast network equipment and a regional processing device; the differential resolving device is used for acquiring differential data information; the multicast network equipment is used for receiving the differential data information broadcast by the differential resolving device; the multicast network device is also used for sending the differential data information to the regional processing device in a multicast mode. The embodiment of the invention can improve the reliability of the foundation enhancement system by multicasting the differential data information through the multicast network equipment.
Description
Technical Field
The invention relates to the technical field of satellite positioning, in particular to a data broadcasting system and a data broadcasting method.
Background
After a reference station in a Ground Based Augmentation System (GBAS) of a navigation satellite receives a satellite navigation signal, corresponding positioning information is formed through data processing, and the positioning information is broadcasted to an application terminal in real time through means of satellite, broadcast, mobile communication and the like, so that positioning service is realized.
At present, in a data broadcasting process of a navigation satellite ground-based augmentation system, software or hardware is needed to realize a message subscription and publishing mechanism among units in the system, so that differential data is distributed. However, the reliability of the navigation satellite ground-based augmentation system is low due to the problems of the software and the hardware.
Disclosure of Invention
The embodiment of the invention provides a data broadcasting system and a data broadcasting method, which can solve the problem of low reliability of a navigation satellite foundation enhancement system caused by the problems of software and hardware.
In a first aspect, a data broadcasting system is provided, which includes a differential solution device, a multicast network device, and a region processing device;
the differential resolving device is used for acquiring differential data information;
the differential resolving device is used for broadcasting differential data information to the multicast network equipment;
the multicast network equipment is used for receiving the differential data information;
the multicast network device is also used for sending the differential data information to the regional processing device in a multicast mode.
In one possible implementation, the differential resolver is specifically configured to:
acquiring satellite data;
and resolving satellite data to generate differential data information.
In one possible implementation, the data dissemination system further includes a differential data center;
the regional processing device is used for receiving request information sent by the differential data center, wherein the request information comprises regional information of the terminal equipment;
the regional processing device is also used for sending differential data information to the differential data center according to the regional information;
the differential data center is used for receiving differential data information sent by the regional processing device;
and the differential data center is also used for sending differential data information to the terminal equipment.
In one possible implementation manner, the manner in which the differential solver broadcasts the differential data information is multicast.
In one possible implementation, the multicast network device includes a switch or a router.
In a second aspect, a data broadcasting method is provided, which is applied to the data broadcasting system in any one of the possible implementation manners of the first aspect and the first aspect, where the data broadcasting method includes:
a differential resolving device in the data broadcasting system acquires differential data information;
the differential resolving device broadcasts differential data information to multicast network equipment in the data broadcasting system;
the multicast network equipment receives the differential data information;
the multicast network equipment sends the differential data information to the regional processing device in the data broadcasting system in a multicast mode.
In one possible implementation, the differential resolver acquires differential data information, and includes:
acquiring satellite data;
and resolving satellite data to generate differential data information.
In a possible implementation manner, the data broadcasting method further includes:
the method comprises the steps that a region processing device receives request information sent by a differential data center in a data broadcasting system, wherein the request information comprises region information of terminal equipment;
the region processing device sends differential data information to a differential data center according to the region information;
the differential data center receives differential data information sent by the area processing device;
and the differential data center sends differential data information to the terminal equipment.
In one possible implementation manner, the manner in which the differential solver broadcasts the differential data information is multicast.
In one possible implementation, the multicast network device includes a switch or a router.
Based on the provided data broadcasting system and method, differential data information is obtained through a differential resolving device; the differential resolving device broadcasts differential data information to the multicast network equipment; the multicast network equipment receives the differential data information; the multicast network equipment sends the differential data information to the regional processing device in a multicast mode. The embodiment of the invention can improve the reliability of the foundation enhancement system by multicasting the differential data information through the multicast network equipment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 illustrates a schematic structural diagram of a data dissemination system according to some embodiments of the present invention;
FIG. 2 illustrates a flow diagram of a method of data dissemination provided in accordance with some embodiments of the present invention;
fig. 3 illustrates a flow diagram of another data dissemination method provided in accordance with some embodiments of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
At present, in a data broadcasting process of a navigation satellite ground-based augmentation system, software or hardware is needed to implement a message subscription and publishing mechanism among units in the system so as to implement distribution of differential data, for example, the message subscription and publishing mechanism between a differential resolving unit and a differential data center can implement copying and distribution of differential corrections. However, the reliability of the navigation satellite ground-based augmentation system is low due to the reliability bottleneck and performance bottleneck of the software and the hardware. Also, the subscription and publication mechanism relies on a subscription and publication Protocol, and for example, a Transmission Control Protocol (TCP) may be used to complete the copying and distribution of the differential correction number of data. However, in the process of adopting the subscription and publication protocol, data distribution cannot be completed before the protocol does not complete the protocol flow.
Therefore, the data broadcasting system and the data broadcasting method provided by the embodiment of the invention can improve the reliability of the foundation enhancement system.
To facilitate understanding of the embodiment, a detailed description is first given of a data distribution system provided in the embodiment of the present invention.
Fig. 1 is a schematic structural diagram of a data distribution system according to an embodiment of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a data distribution system 100, which includes a differential solution device 101, a multicast network device 102, and a regional processing device 103.
And the difference calculating device 101 is used for acquiring the difference data information.
And the differential solution device 101 is used for broadcasting the differential data information to the multicast network equipment.
The multicast network device 102 is configured to receive the differential data information.
The multicast network device 102 is further configured to send the differential data information to the area processing apparatus in a multicast manner.
In one embodiment of the present invention, the differential solver 101 is comprised of a number of differential solvers, each of which is responsible for solving satellite data from satellite receivers in one or more regions.
Specifically, the difference calculating device 101 is specifically configured to: acquiring satellite data; and resolving satellite data to generate differential data information.
In an embodiment of the present invention, after the satellite data is acquired, the differential solution device 101 performs solution on the satellite data to obtain differential data information. Here, the difference data information includes the difference correction number and the area corresponding to the difference correction number. Each satellite data corresponds to an area to which it belongs, which is a general area. For example, the area to which the satellite data belongs may be divided according to the province, and then the general area to which the satellite data belongs is the province to which the satellite data belongs. The area corresponding to the difference correction number coincides with the area corresponding to the satellite data.
The difference calculating device 101 calculates satellite data to obtain a difference correction number, and generates difference data information by combining an area corresponding to the difference correction number.
After the differential solver 101 generates the differential correction number, the differential solver in the differential solver 101 broadcasts the differential correction number to the multicast network element. The differential network unit has a one-to-one or one-to-many relationship with the region to which each differential correction belongs. The broadcast mode of the differential correction number broadcast by the differential solution unit may be multicast.
Here, the multicast network device 102 includes a switch, a router, and the like. The multicast network device 102 is configured to receive data from the multicast source port, that is, the differential corrections broadcast by the differential solution unit. After receiving the data, the multicast network device 102 multicasts the data to the member ports in the multicast group according to the membership of each port of the multicast network device 102 to the multicast group. That is, the multicast network device 102 multicasts the differential modifiers according to the area to which the differential modifiers belong, the area for which each port is responsible, and the area corresponding to the area processing unit.
In the embodiment of the invention, the data replication and distribution depend on the multicast network technology, so the network equipment supporting multicast is adopted. Such as ethernet or a router, to implement the replication and distribution of data. Wherein the multicast network device 102 may act as an intrinsic device of the ground based augmentation system. In the embodiment of the invention, additional message publishing and subscribing software and hardware equipment do not need to be deployed, so that the reliability bottleneck and the performance bottleneck of a foundation enhancement system caused by the additional deployment of software or hardware are greatly reduced, and the cost of the equipment is also reduced.
The area processing device 103 is composed of a plurality of area processing units, and each area processing unit is used for storing the difference correction numbers corresponding to one or more areas.
After multicast network device 102 multicasts the difference correction number to the area processing apparatus, the area processing section in area processing apparatus 103 stores the difference correction number. Wherein, the area processing unit has a corresponding relation with the area to which the difference correction number belongs.
After the data is stored, the area processing unit further broadcasts the difference correction number to the terminal equipment so as to be used for positioning the terminal equipment with high precision.
In one embodiment, the data dissemination system further comprises a differential data center (Ntrip caster) 104. In particular, the method comprises the following steps of,
and the area processing device 103 is used for receiving request information sent by the differential data center, wherein the request information comprises area information of the terminal equipment.
And the area processing device 103 is further configured to send the differential data information to the differential data center according to the area information.
And the differential data center 104 is used for receiving the differential data information sent by the area processing device.
The differential data center 104 is further configured to send differential data information to the terminal device.
In one embodiment of the invention, when the terminal device needs to be located, a request message is sent to the differential data center 104. The request information carries area information of the terminal device. For example, the area information of the terminal device is an urban area of a certain province, that is, the area information is approximate location information of the terminal device.
The differential data center 104 is composed of a number of differential data units. In the data transmission process, the terminal device may send request information to the differential data unit by using a Real Time Kinematic (RTK) data transmission (network Transport of RTCM via Internet Protocol, Ntrip) Protocol.
After receiving the request information, the differential data unit may directly send the area information carrying the terminal device to the area service apparatus 103. The area service device 103 automatically recognizes the area information in the request information, calls a difference correction number corresponding to the area information based on the area information, and transmits the difference correction number to the difference data unit.
After receiving the request information, the differential data unit may also send the request information to the area processing unit having a corresponding relationship with the area information according to the area information carried in the request information, and request the differential correction number of the terminal device. And after receiving the request information, the area processing unit sends the differential correction number to the differential data unit. And after receiving the differential correction number, the differential data unit sends the differential correction number to the terminal equipment.
In addition, the data broadcasting system provided by the embodiment of the invention can realize linear capacity expansion by deploying a plurality of differential data centers or differential data units along with the increase of the number of terminals.
The data broadcasting system provided by the embodiment of the invention multicasts data by adopting the multicast network equipment 102, so that the foundation enhancement system does not need to deploy message subscription software or additionally deploy hardware, the reliability of the system is improved, and the cost of software or hardware deployment is reduced.
The embodiment of the invention also provides a data broadcasting method which is applied to the data broadcasting system shown in the figure 1.
Here, the data broadcasting method provided by the embodiment of the present invention includes two parts: the data broadcasting method between the internal devices of the data broadcasting system and the method for requesting the difference correction number by the terminal device.
The specific process of data distribution among the devices in the data distribution system is the method/step shown in fig. 2. The specific process of the terminal device requesting the differential correction number is shown in fig. 3.
Fig. 2 is a flowchart illustrating a method for data distribution among internal devices of a data distribution system according to an embodiment of the present invention, where the method includes:
s201: and the difference resolving device acquires the difference data information.
Specifically, the differential calculation device obtains the differential data information in the following manner, including: acquiring satellite data; and resolving satellite data to generate differential data information.
In one embodiment of the invention, the satellite data is resolved after it is acquired. Here, the difference data information includes the difference correction number and the area corresponding to the difference correction number. Each satellite data corresponds to an area to which it belongs, which is a general area. The area corresponding to the difference correction number coincides with the area corresponding to the satellite data.
After satellite data is resolved, a differential correction number is obtained, and differential data information is generated by combining an area corresponding to the differential correction number.
S202: and the differential resolving device broadcasts the differential data information to the multicast network equipment.
In an embodiment of the present invention, the differential solver may broadcast the differential data information to the multicast network device in a multicast manner.
S203: the multicast network equipment sends the differential data information to the regional processing device in a multicast mode.
In one embodiment of the invention, the multicast network device comprises a switch or a router.
S204: the area processing device receives the differential data information and stores the differential data information.
Fig. 2 describes a specific process of data distribution among devices in the data distribution system, and a process of requesting a differential correction number by a terminal device is described below, as shown in fig. 3.
Fig. 3 shows a flowchart of a method for requesting a differential nonce by a terminal device according to an embodiment of the present invention.
As shown in fig. 3, a method for requesting a differential nonce by a terminal device according to an embodiment of the present invention includes:
s301: and the terminal equipment sends request information to the differential data center.
In one embodiment of the invention, the request message includes an area to which the terminal device belongs, which is a general area, rather than the precise location of the terminal device.
S302: and the differential data center receives the request information and sends the request information to the area processing device according to the area information in the request information.
S303: and the differential data center acquires the differential data information according to the request information.
In one embodiment of the invention, the differential data center is composed of a number of differential data units. After receiving the request information, the differential data unit may directly send the area information carrying the terminal device to the area service apparatus. The area service device automatically identifies the area information in the request information, and calls the difference correction number corresponding to the area information according to the area information.
After receiving the request information, the differential data unit may also send the request information to the area processing unit having a corresponding relationship with the area information according to the area information carried in the request information, and request the differential correction number of the terminal device.
S304: and after receiving the request information, the area processing unit sends the differential correction number to the differential data unit.
S305: and after receiving the differential correction number, the differential data unit sends the differential correction number to the terminal equipment.
Each step in the method provided by the embodiment of the present invention is executed by the system shown in fig. 1, and a technical effect of reducing reliability bottleneck and performance bottleneck brought to the foundation enhancement system by additionally deploying software or hardware and reducing equipment cost can be achieved, which is not described herein again for brevity.
It is to be understood that the invention is not limited to the specific arrangements and instrumentality described above and shown in the drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications and additions or change the order between the steps after comprehending the spirit of the present invention.
The functional blocks shown in the above structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
As will be apparent to those skilled in the art, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (10)
1. A data broadcasting system is characterized by comprising a differential resolving device, multicast network equipment and a regional processing device;
the differential resolving device is used for acquiring differential data information;
the differential resolving device is also used for broadcasting the differential data information to the multicast network equipment;
the multicast network equipment is used for receiving the differential data information broadcast by the differential resolving device;
the multicast network device is further configured to send the differential data information to the area processing apparatus in a multicast mode.
2. The system according to claim 1, characterized in that said differential solver is specifically configured to:
acquiring satellite data;
and resolving the satellite data to generate the differential data information.
3. The system of claim 1, wherein the data dissemination system further comprises a differential data center;
the area processing device is used for receiving request information sent by the differential data center, wherein the request information comprises area information of terminal equipment;
the region processing device is further configured to send the differential data information to the differential data center according to the region information;
the differential data center is used for receiving the differential data information sent by the area processing device;
and the differential data center is also used for sending the differential data information to the terminal equipment.
4. The system according to any one of claims 1 to 3, wherein the differential solver broadcasts the differential data message in a multicast manner.
5. The system of any of claims 1-3, wherein the multicast network device comprises a switch or a router.
6. A data broadcasting method applied to the data broadcasting system according to any one of claims 1 to 5, wherein the data broadcasting method comprises:
a differential resolving device in the data broadcasting system acquires differential data information;
the differential resolving device broadcasts the differential data information to multicast network equipment in the data broadcasting system;
the multicast network equipment receives the differential data information;
and the multicast network equipment sends the differential data information to a regional processing device in the data broadcasting system in a multicast mode.
7. The method according to claim 6, wherein the differential solver obtains differential data information, including:
acquiring satellite data;
and resolving the satellite data to generate the differential data information.
8. The method of claim 6, wherein the data dissemination method further comprises:
the area processing device receives request information sent by a differential data center in the data broadcasting system, wherein the request information comprises area information of terminal equipment;
the region processing device sends the differential data information to the differential data center according to the region information;
the differential data center receives the differential data information sent by the area processing device;
and the differential data center sends the differential data information to the terminal equipment.
9. The method according to any one of claims 6 to 8, wherein the differential solver broadcasts the differential data message in a multicast manner.
10. The method of any of claims 6-8, wherein the multicast network device comprises a switch or a router.
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102202264A (en) * | 2011-06-01 | 2011-09-28 | 中国人民解放军信息工程大学 | Wireless cooperation relay network reliable multicast transmission method and system |
| CN102868974A (en) * | 2012-09-15 | 2013-01-09 | 青海师范大学 | Method for adaptively routing underwater sensor network on basis of difference |
| CN102905218A (en) * | 2011-07-29 | 2013-01-30 | 北京三星通信技术研究有限公司 | Broadcasting service data transmission method |
| US20140199044A1 (en) * | 2013-01-15 | 2014-07-17 | Qualcomm Incorporated | Supporting transport diversity and time-shifted buffers for media streaming over a network |
| WO2015061981A1 (en) * | 2013-10-30 | 2015-05-07 | Qualcomm Incorporated | Ad-hoc group call communications over evolved multimedia broadcast multicast service |
| CN105722023A (en) * | 2014-12-04 | 2016-06-29 | 中国电信股份有限公司 | Equipment for positioning of mobile terminal, mobile terminal, system, and method |
| CN105842715A (en) * | 2016-04-22 | 2016-08-10 | 桂林电子科技大学 | Beidou positioning and communication integrated universal system and configuration method thereof |
| CN106019336A (en) * | 2015-08-28 | 2016-10-12 | 千寻位置网络有限公司 | Differential relay method and device for global navigation satellite system |
| EP1506638B1 (en) * | 2002-05-18 | 2016-10-12 | LG Electronics, Inc. | Selective service method in multicast system |
| CN108761501A (en) * | 2018-07-03 | 2018-11-06 | 千寻位置网络有限公司 | The broadcasting method and system of PPP differential corrections, positioning terminal |
| CN109246621A (en) * | 2018-08-22 | 2019-01-18 | 深圳思凯微电子有限公司 | Differential data broadcasting method and device, method of reseptance and device, storage medium |
| CN109870714A (en) * | 2019-03-12 | 2019-06-11 | 腾讯科技（深圳）有限公司 | Transmit method, transmitting device, location-server and the mobile terminal of information |
| WO2019161927A1 (en) * | 2018-02-26 | 2019-08-29 | Nokia Technologies Oy | Multicast traffic area management and mobility for wireless network |
| EP3545862A2 (en) * | 2018-03-28 | 2019-10-02 | Ethicon LLC | Method of compressing tissue within a stapling device and simultaneously displaying the location of the tissue within the jaws |
-
2019
- 2019-12-06 CN CN201911244142.1A patent/CN112929070B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1506638B1 (en) * | 2002-05-18 | 2016-10-12 | LG Electronics, Inc. | Selective service method in multicast system |
| CN102202264A (en) * | 2011-06-01 | 2011-09-28 | 中国人民解放军信息工程大学 | Wireless cooperation relay network reliable multicast transmission method and system |
| CN102905218A (en) * | 2011-07-29 | 2013-01-30 | 北京三星通信技术研究有限公司 | Broadcasting service data transmission method |
| CN102868974A (en) * | 2012-09-15 | 2013-01-09 | 青海师范大学 | Method for adaptively routing underwater sensor network on basis of difference |
| US20140199044A1 (en) * | 2013-01-15 | 2014-07-17 | Qualcomm Incorporated | Supporting transport diversity and time-shifted buffers for media streaming over a network |
| WO2015061981A1 (en) * | 2013-10-30 | 2015-05-07 | Qualcomm Incorporated | Ad-hoc group call communications over evolved multimedia broadcast multicast service |
| CN105722023A (en) * | 2014-12-04 | 2016-06-29 | 中国电信股份有限公司 | Equipment for positioning of mobile terminal, mobile terminal, system, and method |
| CN106019336A (en) * | 2015-08-28 | 2016-10-12 | 千寻位置网络有限公司 | Differential relay method and device for global navigation satellite system |
| CN105842715A (en) * | 2016-04-22 | 2016-08-10 | 桂林电子科技大学 | Beidou positioning and communication integrated universal system and configuration method thereof |
| WO2019161927A1 (en) * | 2018-02-26 | 2019-08-29 | Nokia Technologies Oy | Multicast traffic area management and mobility for wireless network |
| EP3545862A2 (en) * | 2018-03-28 | 2019-10-02 | Ethicon LLC | Method of compressing tissue within a stapling device and simultaneously displaying the location of the tissue within the jaws |
| CN108761501A (en) * | 2018-07-03 | 2018-11-06 | 千寻位置网络有限公司 | The broadcasting method and system of PPP differential corrections, positioning terminal |
| CN109246621A (en) * | 2018-08-22 | 2019-01-18 | 深圳思凯微电子有限公司 | Differential data broadcasting method and device, method of reseptance and device, storage medium |
| CN109870714A (en) * | 2019-03-12 | 2019-06-11 | 腾讯科技（深圳）有限公司 | Transmit method, transmitting device, location-server and the mobile terminal of information |
Non-Patent Citations (1)
| Title |
|---|
| 康登榜: "基于C/S架构的卫星导航增强信息互联网播发体系", 《中国标准化》 * |
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