CN101022668A - Planet-earth link switching method and planet-earth link switching mode selection processing device - Google Patents
Planet-earth link switching method and planet-earth link switching mode selection processing device Download PDFInfo
- Publication number
- CN101022668A CN101022668A CNA200710064511XA CN200710064511A CN101022668A CN 101022668 A CN101022668 A CN 101022668A CN A200710064511X A CNA200710064511X A CN A200710064511XA CN 200710064511 A CN200710064511 A CN 200710064511A CN 101022668 A CN101022668 A CN 101022668A
- Authority
- CN
- China
- Prior art keywords
- terminal
- satellite
- wave beam
- cid
- switching mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- H04B7/204—Multiple access
- H04B7/2041—Spot beam multiple access
-
- 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
- H04B7/18521—Systems of inter linked satellites, i.e. inter satellite service
-
- 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
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
- H04B7/18541—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection for handover of resources
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A method for switching over link of satellite/ground includes selecting cell-in switching-over mode to carry out switching-over operation if current wave beam and object wave beam are in the same cell, selecting intercell switching-over mode to carry out switching-over operation if current wave beam and object wave beam are in the same satellite but not in the same cell and selecting intersatellite switching-over mode to carry out switching-over operation if current wave beam and object wave beam are not in the same satellite. The device used for realizing said method is also disclosed.
Description
Technical field
The present invention relates to the satellite-ground link handoff technique in aerospace information field, relate in particular to a kind of satellite-ground link changing method and satellite-ground link switching mode and select processing unit, belong to the aerospace information field.
Background technology
The space-based information system is to be the global integration communication system of core with the satellite node, has global seamless covering, fast reserve advantage such as arrange net.But because there is relative motion in the mobility of satellite node between satellite node and ground based mobile subscriber, this makes terrestrial user need constantly pass through the different satellite beams or the area of coverage, thereby causes the interruption of telex network, and this phenomenon is called satellite-ground link and switches.
Satellite-ground link switches the continuation for service communication, service quality (Quality of Service, abbreviation QoS) assurance ability and satellite node message capacity etc. are all influential, it is the key technology in the space-based information system, especially along with the maturation of satellite multibeam technique be extensive use of, it is more and more general that satellite system user's satellite-ground link switches phenomenon, also more and more important for this way to solve the problem.
Satellite-ground link switches the transregional switching that is similar in the land mobile communication, but because characteristics such as the mobility of satellite and the covering of satellite multi-beam, satellite-ground link based on satellite node switches much more complicated than the transregional switching of land mobile communication, mainly show as: when the user is when a certain sub-district switches to another sub-district under same satellite, satellite-ground link switches similar to the transregional switching in the land mobile communication, only need handle getting final product on physical layer and link layer accordingly; But when two satellites of user's switched design, switching must cause original routing failure, need utilize method such as heavy-route to set up new route in network layer, to guarantee communication continuity.This just requires satellite-ground link to switch need consider physical layer, link layer and network layer simultaneously, switches become complexity and consumes resources.
Present satellite-ground link changing method, main research concentrates on following two aspects.
Wherein a class research mainly lays particular emphasis on the characteristics and the performance of single satellite node access and transfer itself, and the access of the whole satellite network of less relevance and certain business and transfer are to the influence (switching as the user at multi-beam coverage condition under the same satellite) of other nodes of satellite network, link; These researchs often only relate to the problem of link layer and air wireless interface aspect, and consider that seldom network layer needs the problem that solves in handoff procedure; Given algorithm only at the switching of the user in single the satellite (wave beam switching) or adjacent two inter-satellites (single-hop) user's switching, is not considered the switching problem of user under the multiple jump condition yet.Thereby these changing methods generally only are applicable to single gso satellite communication system or do not have the mobile constellation of inter-satellite link, and, then often can't effectively be suitable for or can not get effect preferably for mobile constellation that has inter-satellite link and the mobile-satellite integrated system of new generation that developing.
Another kind of research emphasis is switched (as satellite-ground link handoff protocol (Footprint Handover Rerouting Protocol at the how intersatellite user with networking between star, be called for short FHRP)), these researchs mainly concentrate on network layer, given algorithm can solve and switch the influence of back network route variation to the service switchover communication performance, but algorithm relates to network layer, need expend and handle resource and star ground signal resource on a large amount of stars, algorithm complex is big.Existing these researchs are often only at a certain situation, do not take all factors into consideration multiple switching (between wave beam, interval, inter-satellite etc.), therefore are difficult in and obtain optimum trading off between performance and resource cost.
Summary of the invention
Embodiments of the invention technical problem to be solved is, overcome prior art and can not select the deficiency of switching mode owing to single changing method flexibly, providing a kind of can select the satellite-ground link changing method of different switching modes and satellite-ground link switching mode to select processing unit according to different switching types, solve the satellite-ground link switching problem from physical layer, link layer and/or network layer respectively, switch optimization to reach satellite-ground link.
For achieving the above object, embodiments of the invention provide a kind of satellite-ground link changing method, comprising: the relation information of describing current wave beam and object beam in the handoff request information according to the terminal initiation selects corresponding switching mode to carry out handover operation, if current wave beam and object beam belong to same sub-district, then select the interior switching mode in district to carry out handover operation; If current wave beam and object beam belong to same satellite and do not belong to same sub-district, then select interval switching mode to carry out handover operation; If current wave beam and object beam do not belong to same satellite, then select between star switching mode to carry out handover operation.
Embodiments of the invention also provide a kind of satellite-ground link switching mode to select processing unit, comprising: receiving element is used for the handoff request information that receiving terminal is initiated; Selected cell is connected with receiving element, is used for selecting corresponding switching mode according to the relation information that described handoff request information is described current wave beam and object beam; If current wave beam and object beam belong to same sub-district, then select the interior switching mode in district to carry out handover operation; If current wave beam and object beam belong to same satellite and do not belong to same sub-district, then select interval switching mode to carry out handover operation; If current wave beam and object beam do not belong to same satellite, then select between star switching mode to carry out handover operation; And notification unit, be connected with selected cell, be used to obtain the selected switching mode of selected cell, and notify corresponding satellite to adopt described switching mode that terminal is carried out the satellite-ground link switching.
It is single that embodiments of the invention have overcome in the prior art switching mode, can not select the deficiency of switching mode flexibly, consider between wave beam, interval and the multiple satellite-ground link switching problem of inter-satellite, can select corresponding optimum switching mode according to different switching demands, for example: selecting only need be from switching mode in the district that physical layer solution satellite-ground link switches, or select to solve the interval switching mode that satellite-ground link switches from physical layer and link layer, or select from physical layer, switching mode between the star that link layer and network layer solution satellite-ground link switch, switching mode can be according to switching the demand flexible and selectable.In addition, guaranteeing to reduce the switching expense when the service switchover communication performance requires, as switching the problem of switching between wave beam that solved in distinguishing, only needing to solve, do not needing to consider link layer and network layer in physical layer; The problem that switch the minizone that solved is switched in the interval, only need solve in physical layer and link layer, does not need to consider network layer, switches required signal resource thereby greatly reduced when assurance service switchover communication letter can require.
Description of drawings
Fig. 1 is the flow chart of the preferred embodiment of satellite-ground link changing method of the present invention.
Fig. 2 is the flow chart of handover operation in the district.
Fig. 3 is the flow chart of interval handover operation.
Fig. 4 is the flow chart of handover operation between star.
Fig. 5 selects the structural representation of processing unit for satellite-ground link switching mode of the present invention.
Fig. 6 is provided with the space-based information system structural representation that the satellite-ground link switching mode is selected processing unit.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
The present invention has overcome the deficiency that switching mode in the prior art is single, can not select switching mode flexibly, can carry out handover operation according to switching mode between the different interior switching modes in the corresponding district of switching type selection, interval switching mode or star, solve the satellite-ground link switching problem from physical layer, link layer and/or network layer respectively, switch optimization to reach satellite-ground link.
The embodiment of satellite-ground link changing method of the present invention, comprise: the relation information of describing current wave beam and object beam in the handoff request information according to the terminal initiation selects corresponding switching mode to carry out handover operation, if current wave beam and object beam belong to same sub-district, then select the interior switching mode in district to carry out handover operation; If current wave beam and object beam belong to same satellite and do not belong to same sub-district, then select interval switching mode to carry out handover operation; If current wave beam and object beam do not belong to same satellite, then select between star switching mode to carry out handover operation.
Those skilled in the art should be understood that the step of above-mentioned selection switching mode can adopt the parallel step of judging; also can judge whether current wave beam and object beam belong to the mode of same sub-district, same satellite by order; those skilled in the art can specifically select parallel judgement or order judgment mode to determine switching mode according to the practical application scene, and it all should be within technical solution of the present invention scope required for protection.Fig. 1 is the flow chart of a preferred embodiment of satellite-ground link changing method of the present invention, comprising:
Handover operation in step 21, the execution district.Switch in the district promptly and switch between the interior wave beam in district, realizing only needing to consider physical layer.
Handover operation between step 32, execution star.Switch between star, except considering physical layer and link layer, also need to consider network layer in realization, promptly search business datum required next-hop node when the network layer route.
The embodiment of satellite-ground link changing method provided by the invention, it is single to have overcome in the prior art switching mode, can not select the deficiency of switching mode flexibly, take all factors into consideration between the interior wave beam in district, multiple satellite-ground link switching problem such as between interval and star in the district, can select corresponding optimum switching mode flexibly according to different switching types, for example: selecting only need be from switching mode in the district that physical layer solution satellite-ground link switches, or select to solve the interval switching mode that satellite-ground link switches from physical layer and link layer, or select from physical layer, switching mode between the star that link layer and network layer solution satellite-ground link switch, switching mode can be according to switching the demand flexible and selectable.In addition, guaranteeing to reduce the switching expense when the service switchover communication performance requires, as switching the problem of switching between wave beam that solved between wave beam in distinguishing, only needing to solve in physical layer, do not need to consider link layer and network layer, thereby avoided link layer and network layer to switch required signal resource; As interval the switching solved the problem that switch the minizone in distinguishing, and only needs to solve in physical layer and link layer, do not need to consider network layer, thereby guaranteeing to have avoided network layer to switch required signal resource when service switchover communication letter can require.Because switch between wave beam in the district, the interval switching in the district, all do not consider network layer, so handle resource and star ground signal resource on the star and expend for a short time that computation complexity is little.
Below be example with terminal from the object beam that current wave beam switches to current area, the step of handover operation in the district is described, current area is the sub-district at current wave beam place, as shown in Figure 2, comprising:
After steps A 3, object beam are the terminal distribution channel resource, send the message that connects to terminal.
Steps A 4, terminal send to object beam confirms connection message.
Steps A 5, object beam notice terminal change wave beam number.
After steps A 6, terminal receive the notice of change wave beam number, send to object beam and to confirm change wave beam number.
Steps A 7, terminal send to current wave beam and disconnect connection request.
Steps A 8, current wave beam send to terminal confirms to disconnect connection message.
Steps A 9, current wave beam discharge channel resource.
Steps A 10, terminal discharge channel resource.
In switching in the district, current wave beam and object beam carry out Signalling exchange and negotiation, whole handoff procedure all occurs in physical layer, and do not relate to link layer and network layer, reduced computation complexity, avoided link layer and network layer to switch required signal resource, improved resource utilization, switched simple, quick.
Below be example with terminal from the Target cell that current wave beam switches to outside the current area, the step of interval handover operation is described, as shown in Figure 3, comprising:
The Target cell at step B1, object beam place is received handoff request information.
Step B2, Target cell judge whether object beam exists idle channel resources, if exist, and execution in step B3 then, otherwise, postpone to switch execution in step B2, or cancellation is switched.Among this embodiment among the step B2 Target cell judge that object beam does not have idle channel resources, adopt to postpone to switch the scheme of execution in step B2.
Step B3, Target cell are the terminal distribution channel resource, and after distributing connection identifier (CID (ConnectionIdentifier is called for short CID), send the message that connects to terminal; CID is the unique identifier of sign wireless connections on the inherent link layer in sub-district, is convenient to user management and the specified services service is provided;
Step B4, terminal send to Target cell confirms connection message.
Step B5, Target cell notice terminal change connection identifier (CID and wave beam number.
After step B6, terminal receive the notice of change connection identifier (CID and wave beam number, send to Target cell and to confirm change connection identifier (CID and wave beam number.
Step B7, Target cell upgrade CID-IP mapping table and CID-port mapping table after receiving terminal check change message; The CID-IP mapping table is the mapping table between CID and terminal IP; The CID-port mapping table is the mapping table between CID and emission/receiving port.
Step B8, terminal send to current area and disconnect connection request.
Step B9, current area send to terminal confirms to disconnect connection message.
Step B10, current area are upgraded CID-IP mapping table and CID-port mapping table, reclaim original connection identifier (CID, discharge channel resource.
Step B11, terminal discharge channel resource.
In interval the switching, current wave beam and Target cell carry out Signalling exchange and negotiation, and whole handoff procedure occurs in physical layer and link layer, and do not relate to network layer, and reduced computation complexity, avoided network layer to switch required signal resource, improved resource utilization, switched simple, quick.
Below be example with terminal from the target satellite that current wave beam switches to outside the current satellite, the step of handover operation between star is described, current satellite is the satellite at current wave beam place, as shown in Figure 4, comprising:
The target satellite at step C1, object beam place is received handoff request information.
Step C2, target satellite judge whether the Target cell at object beam place and object beam exist idle channel resources, if exist, then execution in step 3, otherwise, postpone to switch execution in step C2, or cancellation is switched.Among this embodiment among the step C2 target satellite judge that Target cell and object beam do not have idle channel resources, adopt to postpone to switch the scheme of execution in step C2.
Step C3, target satellite are the terminal distribution channel resource, and after distributing connection identifier (CID, send the message that connects to terminal.
Step C4, terminal send to target satellite confirms connection message.
Step C5, target satellite notice terminal change connection identifier (CID and wave beam number.
After step C6, terminal receive the notice of change connection identifier (CID and wave beam number, send to target satellite and to confirm change connection identifier (CID and wave beam number.
Step C7, target satellite upgrade terminal list, routing table, CID-IP mapping table and CID-port mapping table after receiving terminal check change message; Terminal list is all terminal information tabulations that connect with this satellite; Routing table is used to search terminal traffic data required next-hop node when the network layer route.
Step C8, terminal disconnect connection request to current satellite transmission.
Step C9, current satellite send to terminal confirms to disconnect connection message.
Step C10, current satellite update terminal list, routing table, CID-IP mapping table and CID-port mapping table reclaim original connection identifier (CID, discharge channel resource.
Step C11, terminal are released channel and are put resource.
In switching between star, current wave beam and target satellite carry out Signalling exchange and negotiation, and whole handoff procedure occurs in physical layer, link layer and network layer, the continuation of business when having guaranteed to switch.
Satellite-ground link switching mode of the present invention is selected the embodiment of processing unit, as shown in Figure 5, comprising: receiving element 101 is used for the handoff request information that receiving terminal is initiated; Selected cell 102 is connected with receiving element 101, is used for selecting corresponding switching mode according to the relation information that described handoff request information is described current wave beam and object beam; If current wave beam and object beam belong to same sub-district, then select the interior switching mode in district to carry out handover operation; If current wave beam and object beam belong to same satellite and do not belong to same sub-district, then select interval switching mode to carry out handover operation; If current wave beam and object beam do not belong to same satellite, then select between star switching mode to carry out handover operation; And notification unit 103, be connected with selected cell 102, be used to obtain the selected switching mode of selected cell, and notify corresponding satellite to adopt described switching mode that terminal is carried out the satellite-ground link switching.When terminal switched to Target cell by current area, corresponding satellite was meant the satellite under the Target cell.
Embodiments of the invention are selected processing unit by a satellite-ground link switching mode is provided, when terminal request is switched, the satellite-ground link switching mode is selected in the handoff request information of processing unit according to the terminal transmission, describe the relation information of current wave beam and object beam and select corresponding switching mode, switching mode can be according to switching the demand flexible and selectable.Guaranteeing to reduce the switching expense when the service switchover communication performance requires in addition, as switch the problem of switching between wave beam that solved in distinguishing between wave beam, only need to solve, do not need to consider link layer and network layer, thereby avoided link layer and network layer to switch required signal resource in physical layer; As interval the switching solved the problem that switch the minizone in distinguishing, and only needs to solve in physical layer and link layer, do not need to consider network layer, thereby guaranteeing to have avoided network layer to switch required signal resource when service switchover communication letter can require.Because switch between wave beam in the district, the interval switching in the district, all do not consider network layer, so handle resource and star ground signal resource on the star and expend for a short time that computation complexity is little.
Fig. 6 is provided with the space-based information system structural representation that the satellite-ground link switching mode is selected processing unit.Wherein satellite A overlay area comprises sub-district A-1, sub-district A-2, and satellite B overlay area comprises sub-district B-1, sub-district B-2; A-1 overlay area, sub-district is made up of wave beam 1 and wave beam 2, and A-2 overlay area, sub-district is made up of wave beam 3 and wave beam 4, and B-1 overlay area, sub-district is made up of wave beam 1 ' and wave beam 2 ', and B-2 overlay area, sub-district is made up of wave beam 3 ' and wave beam 4 '; Be provided with a satellite-ground link switching mode in the satellite A and select processing unit A0, be provided with a satellite-ground link switching mode in the satellite B and select processing unit B0.
When terminal UE when wave beam 1 switches to wave beam 2, the satellite-ground link switching mode selects to describe in the handoff request information of processing unit A0 according to the terminal initiation relation information of wave beam 1 and wave beam 2, determine that wave beam 1 and wave beam 2 belong to same sub-district, select switching mode in the district; When terminal UE when wave beam 1 switches to wave beam 3, the satellite-ground link switching mode selects processing unit A0 to determine that wave beam 1 and wave beam 2 belong to same satellite and do not belong to same sub-district, select interval switching mode; When terminal UE when wave beam 1 switches to wave beam 2 ', the satellite-ground link switching mode selects processing unit B0 to determine that wave beam 1 belongs to different satellites with wave beam 2 ', switching mode between the selection star.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (5)
1, a kind of satellite-ground link changing method is characterized in that, comprising:
Describe the relation information of current wave beam and object beam in the handoff request information according to the terminal initiation and select corresponding switching mode to carry out handover operation,, then select the interior switching mode in district to carry out handover operation if current wave beam and object beam belong to same sub-district; If current wave beam and object beam belong to same satellite and do not belong to same sub-district, then select interval switching mode to carry out handover operation; If current wave beam and object beam do not belong to same satellite, then select between star switching mode to carry out handover operation.
2, method according to claim 1 is characterized in that, switching mode is carried out handover operation and specifically comprised in the described selection district:
Steps A 1, object beam are received handoff request information;
Steps A 2, object beam judge whether to exist idle channel resources, if existence, then execution in step A3; Otherwise, postpone execution in step A2 or cancellation switching;
After steps A 3, object beam are the terminal distribution channel resource, send the message that connects to terminal;
Steps A 4, terminal send to object beam confirms connection message;
Steps A 5, object beam notice terminal change wave beam number;
After steps A 6, terminal receive the notice of change wave beam number, send to object beam and to confirm change wave beam number;
Steps A 7, terminal send to current wave beam and disconnect connection request;
Steps A 8, current wave beam send to terminal confirms to disconnect connection message;
Steps A 9, current wave beam discharge channel resource;
Steps A 10, terminal discharge channel resource.
3, method according to claim 1 is characterized in that, the interval switching mode of described selection is carried out handover operation and specifically comprised:
The Target cell at step B1, object beam place is received handoff request information;
Step B2, Target cell judge whether object beam exists idle channel resources, if exist, and execution in step B3 then, otherwise, postpone execution in step B2 or cancellation is switched;
Step B3, Target cell are the terminal distribution channel resource, and after distributing connection identifier (CID, send the message that connects to terminal;
Step B4, terminal send to Target cell confirms connection message;
Step B5, Target cell notice terminal change connection identifier (CID and wave beam number;
After step B6, terminal receive the notice of change connection identifier (CID and wave beam number, send to Target cell and to confirm change connection identifier (CID and wave beam number;
Step B7, Target cell upgrade CID-IP mapping table and CID-port mapping table after receiving terminal check change message;
Step B8, terminal send to current area and disconnect connection request;
Step B9, current area send to terminal confirms to disconnect connection message;
Step B10, current area are upgraded CID-IP mapping table and CID-port mapping table, reclaim original connection identifier (CID, discharge channel resource;
Step B11, terminal discharge channel resource.
4, method according to claim 1 is characterized in that, switching mode is carried out handover operation and specifically comprised between described selection star:
The target satellite at step C1, object beam place is received handoff request information;
Step C2, target satellite judge whether the Target cell at object beam place and object beam exist idle channel resources, if exist, and execution in step C3 then, otherwise, postpone execution in step C2 or cancellation is switched;
Step C3, target satellite are the terminal distribution channel resource, and after distributing connection identifier (CID, send the message that connects to terminal;
Step C4, terminal send to target satellite confirms connection message;
Step C5, target satellite notice terminal change connection identifier (CID and wave beam number;
After step C6, terminal receive the notice of change connection identifier (CID and wave beam number, send to target satellite and to confirm change connection identifier (CID and wave beam number;
Step C7, target satellite upgrade terminal list, routing table, CID-IP mapping table and CID-port mapping table after receiving terminal check change message;
Step C8, terminal disconnect connection request to current satellite transmission;
Step C9, current satellite send to terminal confirms to disconnect connection message;
Step C10, current satellite update terminal list, routing table, CID-IP mapping table and CID-port mapping table reclaim original connection identifier (CID, discharge channel resource;
Step C11, terminal discharge channel resource.
5, a kind of satellite-ground link switching mode is selected processing unit, it is characterized in that, comprising:
Receiving element is used for the handoff request information that receiving terminal is initiated;
Selected cell is connected with receiving element, is used for selecting corresponding switching mode according to the relation information that described handoff request information is described current wave beam and object beam; If current wave beam and object beam belong to same sub-district, then select the interior switching mode in district to carry out handover operation; If current wave beam and object beam belong to same satellite and do not belong to same sub-district, then select interval switching mode to carry out handover operation; If current wave beam and object beam do not belong to same satellite, then select between star switching mode to carry out handover operation;
Notification unit is connected with selected cell, is used to obtain the selected switching mode of selected cell, and notifies corresponding satellite to adopt described switching mode that terminal is carried out the satellite-ground link switching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710064511XA CN100452927C (en) | 2007-03-16 | 2007-03-16 | Planet-earth link switching method and planet-earth link switching mode selection processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710064511XA CN100452927C (en) | 2007-03-16 | 2007-03-16 | Planet-earth link switching method and planet-earth link switching mode selection processing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101022668A true CN101022668A (en) | 2007-08-22 |
| CN100452927C CN100452927C (en) | 2009-01-14 |
Family
ID=38710289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710064511XA Expired - Fee Related CN100452927C (en) | 2007-03-16 | 2007-03-16 | Planet-earth link switching method and planet-earth link switching mode selection processing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100452927C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102724682A (en) * | 2012-05-25 | 2012-10-10 | 中兴通讯股份有限公司 | Networking method and device of communication system based on active antenna |
| CN104582002A (en) * | 2015-02-02 | 2015-04-29 | 北京华力创通科技股份有限公司 | Method and device for resource release in satellite mobile communication system |
| CN105682111A (en) * | 2016-01-25 | 2016-06-15 | 协同通信技术有限公司 | Beam switching method, mobile satellite terminal and gateway |
| CN109075853A (en) * | 2016-04-28 | 2018-12-21 | 高通股份有限公司 | For the switching of satellite communication |
| CN109560860A (en) * | 2018-12-25 | 2019-04-02 | 长沙天仪空间科技研究院有限公司 | A kind of satellite communication method for routing and system |
| CN111095821A (en) * | 2017-08-01 | 2020-05-01 | 维尔塞特公司 | Handover based on predicted network conditions |
| CN112312486A (en) * | 2019-07-25 | 2021-02-02 | 大唐移动通信设备有限公司 | Information processing method, gateway station, device and medium during switching of feeder link |
| CN112821941A (en) * | 2021-01-14 | 2021-05-18 | 重庆邮电大学 | Pre-switching method for multi-beam low-orbit satellite communication system |
| WO2021104327A1 (en) * | 2019-11-29 | 2021-06-03 | 华为技术有限公司 | Communication method and device |
| CN114339820A (en) * | 2020-09-29 | 2022-04-12 | 大唐移动通信设备有限公司 | Communication method, device and equipment in satellite communication network and readable storage medium |
| CN115136656A (en) * | 2021-01-25 | 2022-09-30 | 北京小米移动软件有限公司 | Beam measuring method and beam measuring device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7107062B2 (en) * | 1992-03-06 | 2006-09-12 | Aircell, Inc. | System for managing call handoffs between an aircraft and multiple cell sites |
| US5574968A (en) * | 1994-06-01 | 1996-11-12 | Motorola, Inc. | Satellite cellular communication methods for performing cell-to-cell handoff |
| US6108538A (en) * | 1997-12-01 | 2000-08-22 | Motorola, Inc. | Method and apparatus for dynamically controlling hand-off thresholds in a satellite cellular communication system |
| US5978365A (en) * | 1998-07-07 | 1999-11-02 | Orbital Sciences Corporation | Communications system handoff operation combining turbo coding and soft handoff techniques |
| EP1395075A1 (en) * | 2001-06-06 | 2004-03-03 | Matsushita Electric Industrial Co., Ltd. | Cellular radio transmission apparatus and cellular radio transmission method |
| JP4575182B2 (en) * | 2005-01-28 | 2010-11-04 | 三菱電機株式会社 | Satellite communication terminal and management station |
-
2007
- 2007-03-16 CN CNB200710064511XA patent/CN100452927C/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102724682A (en) * | 2012-05-25 | 2012-10-10 | 中兴通讯股份有限公司 | Networking method and device of communication system based on active antenna |
| CN104582002A (en) * | 2015-02-02 | 2015-04-29 | 北京华力创通科技股份有限公司 | Method and device for resource release in satellite mobile communication system |
| CN104582002B (en) * | 2015-02-02 | 2017-11-21 | 北京华力创通科技股份有限公司 | The method and device that resource discharges in satellite mobile communication system |
| CN105682111A (en) * | 2016-01-25 | 2016-06-15 | 协同通信技术有限公司 | Beam switching method, mobile satellite terminal and gateway |
| CN105682111B (en) * | 2016-01-25 | 2019-07-26 | 协同通信技术有限公司 | Beam switching method, mobile satellite terminal and gateway station |
| CN109075853A (en) * | 2016-04-28 | 2018-12-21 | 高通股份有限公司 | For the switching of satellite communication |
| CN109075853B (en) * | 2016-04-28 | 2019-09-10 | 高通股份有限公司 | For the switching of satellite communication |
| US11115114B2 (en) | 2017-08-01 | 2021-09-07 | Viasat, Inc. | Handover of a mobile terminal in a multi-beam satellite based on network conditions |
| US11811487B2 (en) | 2017-08-01 | 2023-11-07 | Viasat, Inc. | Handover of a mobile terminal in a multi-beam satellite based on network conditions |
| CN111095821A (en) * | 2017-08-01 | 2020-05-01 | 维尔塞特公司 | Handover based on predicted network conditions |
| CN111095821B (en) * | 2017-08-01 | 2022-04-08 | 维尔塞特公司 | Handover based on predicted network conditions |
| CN109560860B (en) * | 2018-12-25 | 2021-02-09 | 长沙天仪空间科技研究院有限公司 | Satellite communication routing method and system |
| CN109560860A (en) * | 2018-12-25 | 2019-04-02 | 长沙天仪空间科技研究院有限公司 | A kind of satellite communication method for routing and system |
| CN112312486A (en) * | 2019-07-25 | 2021-02-02 | 大唐移动通信设备有限公司 | Information processing method, gateway station, device and medium during switching of feeder link |
| WO2021104327A1 (en) * | 2019-11-29 | 2021-06-03 | 华为技术有限公司 | Communication method and device |
| CN114339820A (en) * | 2020-09-29 | 2022-04-12 | 大唐移动通信设备有限公司 | Communication method, device and equipment in satellite communication network and readable storage medium |
| CN114339820B (en) * | 2020-09-29 | 2023-11-24 | 大唐移动通信设备有限公司 | Communication method, device, equipment and readable storage medium in satellite communication network |
| CN112821941A (en) * | 2021-01-14 | 2021-05-18 | 重庆邮电大学 | Pre-switching method for multi-beam low-orbit satellite communication system |
| CN112821941B (en) * | 2021-01-14 | 2022-10-21 | 重庆邮电大学 | Pre-switching method for multi-beam low-orbit satellite communication system |
| CN115136656A (en) * | 2021-01-25 | 2022-09-30 | 北京小米移动软件有限公司 | Beam measuring method and beam measuring device |
| CN115136656B (en) * | 2021-01-25 | 2023-10-03 | 北京小米移动软件有限公司 | Beam measuring method and beam measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100452927C (en) | 2009-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100452927C (en) | Planet-earth link switching method and planet-earth link switching mode selection processing device | |
| CN101001101B (en) | Satellite ground link switch-over method of mobile satellite network | |
| US7180866B1 (en) | Rerouting in connection-oriented communication networks and communication systems | |
| US7599657B2 (en) | Reducing service outages in a multibeam satellite system | |
| Lee et al. | Satellite over satellite (SOS) network: A novel architecture for satellite network | |
| US7616599B2 (en) | Label switched packet transfer base station | |
| US5924014A (en) | Method and apparatus for adaptive routing in a satellite-based communication system | |
| US20010026537A1 (en) | Satellite internet backbone network system using virtual onboard switching | |
| CN113347678B (en) | 5G constellation route partition control method | |
| CN101710877A (en) | Method, device and system for processing traffic flow based on pseudowire | |
| JP7398456B2 (en) | Establishing and establishing links and electronic devices | |
| CN108964745B (en) | Data processing method, network architecture, electronic device and readable storage medium | |
| CN101001100A (en) | Switch-over protection method of link between satellites | |
| CN109194383A (en) | A kind of mobility method in management LEO satellite communication systems | |
| CN104579453A (en) | Onboard seamless data transmission wireless communication system and method | |
| JPH10224381A (en) | Network structure realizing part of radio atm system and method for executing hand-over between switches in the network structure | |
| US20020131409A1 (en) | Self-healing multi-level telecommunications network | |
| Uzunalioğlu et al. | A connection handover protocol for LEO satellite ATM networks | |
| Yu et al. | Connection architecture and protocols to support efficient handoffs over an ATM/B-ISDN personal communications network | |
| CN114726429A (en) | Non-geosynchronous satellite orbit, core network, networking and using method | |
| CN115426031B (en) | Centralized and distributed combined space-based network routing control system | |
| Li et al. | Load-balanced cooperative transmission in MEO-LEO satellite network | |
| JP2002064515A (en) | Information transmission system and information transmission method | |
| US20040072562A1 (en) | Mobile communications system for use with first and second set of user terminals and method for operating same | |
| CN103746891A (en) | Ring network access service protection method, device and system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090114 Termination date: 20170316 |