CN101873652B - Handover switching method of user terminal under single-hop mode in satellite communication system - Google Patents
Handover switching method of user terminal under single-hop mode in satellite communication system Download PDFInfo
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Abstract
The invention discloses a handover switching method of a user terminal under a single-hop mode in a satellite communication system, belonging to the technical field of satellite communication. The method of the invention comprises the following steps: (a) a wireless network controller of a user terminal sends a single-hop resource reconfiguration message to a satellite routing controller and simultaneously starts a double-hop switching process required by signaling; (b) the satellite routing controller judges whether single-hop resources are available or not, wherein if the single-hop resources are available, the wireless network controller indicates the satellite routing controller to execute single-hop resource reallocation and indicates the user terminal to carry out physical channel reconfiguration, and if no single-hop resources are allocated, the wireless network controller indicates the satellite routing controller to release current single-hop resources and indicates the terminal to carry out physical channel reconfiguration according to a double-hop link physical channel message; (c) the satellite routing controller informs the satellite to execute operation; and (d) the wireless network controller completes the ground network operation required by handover switching of the user terminal. The invention can be used for satellite mobile communication.
Description
Technical field
The invention belongs to technical field of satellite communication, relate to the handover switching method of user terminal under the single-hop mode in a kind of gso satellite communication system.
Background technology
Many existing communication systems all provide ground based cellular communication and satellite communication simultaneously.The typical case of the satellite communication between terminal utilization is exactly the double jump pattern, i.e. two signaling paths: one be from initiating terminal via satellite to ground station, other one is via satellite to destination from ground station.The double jump pattern can cause that time delay is 540ms end to end in the GEO satellite communication system, and is for voice communication, longer relatively.Except the double jump satellite communication system, support the satellite communication system of single-hop communication also to exist, this pattern can reduce time-delay, makes voice delay time reduce by half.In addition, have the system of double jump and one hop link simultaneously in addition, this is for the load-carrying ability of balance satellite and telephone traffic.In this system, when the user distinguishes (crossing over wave beam as moving because of the user) more, the problem that exists single-hop how to switch to double jump to single-hop, single-hop.For the switching problem of satellite communication system, there has been corresponding research work to carry out and obtained certain achievement:
[Voce; Daniel A. (Germantown; MD); US Patent 6,246,874; " Method and apparatus forpredicting spot beam and satellite handover in a mobile satellite communication network " Dec16,1998] disclosing a kind of elevation angle according to portable terminal and satellite judges whether to switch to another adjacent satellite from a satellite.But the non-GEO of its system configuration system.
[Dutta; Santanu (Cary, NC), Karabinis; Peter D. (Cary; NC); US Patent 6,879,829; " SYSTEMS AND METHODS FOR HANDOVER BETWEEN SPACE BASED ANDTERRESTRIAL RADIOTERMINAL COMMUNICATIONS; AND FOR MONITORINGTERRESTRIALLY REUSED SATELLITE FREQUENCIES AT A RADIOTERMINAL TOREDUCE POTENTIAL INTERFERENCE " Apr 12,2005] a kind of communication system that comprises the space composition disclosed, surpass threshold value at the transmit signal power of wireless terminal; And when its satellite signal quality that receives surpasses threshold value, will switch to satellite (or terrestrial cellular base station) from ancillary terrestrial component with communicating by letter of wireless terminal; But comprised monitoring wireless terminal upper ground surface satellite channelized frequencies in addition to reduce the method for interfere.
[Upton; Eric L. (Redondo Beach, CA), Ward, Jr.; Robert M. (Poway, CA), US Patent5; 784,695, " Method and apparatus for handover control in a satellite based telecommunicationssystem " Jul 21; 1998] a kind of satellite-based GSM is disclosed; When switching, the base station produces a switching timing (having comprised the time of when switching) and arrives mobile radio station through original Channel Transmission, and mobile radio station is set up new channel operation thus accordingly; And switch in switching time, switch conflict and interrupt to reduce.
General, for the switching problem of satellite mobile communication system, because the difference of used satellite has different problems, the system such as for the multi-satellite composition faces the switching of different satellites; And for single satellite (generally being geostationary orbit GEO satellite) system, handover operation is then only in the wave beam under same satellite.Visible by above-mentioned listed patent; For the switching of satellite system, that is considered is how to judge whether to switch more, and how to control switching time at present; And for concrete handover operation and flow process; Rare relating to, especially how to accomplish the operation of switching switching system on the star that relates to for satellite system with single-hop communication ability, do not find correlative study at present.
Generally speaking, for the geosynchronous satellite GSM that possesses the single-hop communication mode, how accomplishing its handover under single-hop mode, is the technical problem that this area exists.
Summary of the invention
One object of the present invention provides a kind of handoff scheme under the single-hop mode in the gso satellite communication system that is applied to.When this scheme was intended to make user terminal in moving, to move to another wave beam by a wave beam, ongoing single-hop voice communication can seamless switching, reduced simultaneously to connect in the handoff procedure to interrupt the conversation loss that causes.
As shown in Figure 1, satellite communication system structure involved in the present invention is made up of two branches: handle management control branch on communication network main body branch and its attached star.The principal character of the structure of this satellite communication system concentrates on and handles management control branch on the attached star.This branch mainly comprises satellite path control deivce (SRC).The major function of satellite path control deivce (SRC) is to handle single-hop request and the related news that communication network main body branch is transmitted, the configuration of single-hop resource on the coupling of user profile and the user satellite under the completion single-hop situation.The satellite path control deivce is connected with the radio network controller data of communication network main body branch.
In addition, handle management control branch on the star and also can comprise satellite Control Node (SCN), the satellite Control Node receives the instruction of satellite path control deivce, realizes the concrete configuration of satellite resource and directly control.
Communication network main body branch can be the existing network system in ground, as: GSM, IS-95, WCDMA etc.
The inventive method mainly comprises the following steps:
A) radio network controller under the user terminal sends single-hop resource reconfiguration message to the satellite path control deivce, starts the required double jump switch flow process of signaling simultaneously;
B) the satellite path control deivce judges whether the single-hop resource is available; If the single-hop resource can be used; Then radio network controller returns and reshuffles the response response message; Indication satellite path control deivce is carried out the single-hop resource re-allocation, and after the response of receiving this message, postpones a preset time (this is approaching as far as possible in order to make moment that satellite carries out the single-hop resource reconfiguration and terminal carry out the moment that physical channel reshuffles); According to message such as single-hop correlated frequency, wave beams, indicating user terminal carries out physical channel and reshuffles; If no single-hop resource allocation is then returned and reshuffled the response response message, indication satellite path control deivce discharges current single-hop resource, and carries out physical channel according to double jump link physical channel massage indicating terminal and reshuffle;
C) the satellite path control deivce is notified the satellite executable operations to satellite transmission resource reconfiguration message;
D) radio network controller is accomplished the required ground network operation of user terminal handover.
Fig. 3 has roughly described above-mentioned process step; It should be noted that; " postponing one section preset time " shown in the figure; Value can be sent before the message of the message of " physical channel reconfiguration (physical channel is reshuffled) " by name " reshuffling the response response message " by name in the drawings in the presentation graphs for negative.
The invention provides a kind of user terminal handoff scheme under the single-hop mode in the gso satellite communication system that is applied to; When in moving, moving to another wave beam by a wave beam to solve user terminal; Ongoing single-hop voice communication can seamless switching; Reduce the conversation that connection is interrupted causing in the handoff procedure and lose, this scheme has the following advantages:
1) solved the switching problem of single-hop communication to single-hop, double jump communication.
2) handoff procedure is changed few to the switching flow of ground legacy network.Relate to the part that single-hop is switched, only relevant in terrestrial network with radio network controller, and have only a spot of interacting message, and do not change the flow process of original switching simultaneously, just add the single-hop related procedure therein.
3) it is few break period to switch the connection cause,, in the switching of single-hop, because the physical channel configuration of demodulation resource and user terminal all needs to change on the star, belongs to direct-cut operation, so must cause connecting short interruption in single-hop.In this programme, issue terminal physical channel reconfiguration message and issue between the message of satellite Control Node and differ the time about 135ms, the minimizing of maximum possible connection break period of causing of direct-cut operation.
4) the ground communication net is changed little.Except that radio network controller, the existing mobile communications system corresponding communication interface on ground and protocol specification all do not have to change.
Description of drawings
Fig. 1 representes the satellite communication network structure chart;
Fig. 2 representes the radio network controller building-block of logic;
Fig. 3 representes single-hop communication switching flow figure;
Fig. 4 representes to stride RNC switching flow figure based on the WCDMAR4 network.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Specific embodiment described herein is only in order to explaining the present invention, and is not used in qualification the present invention.
Following embodiment utilizes existing ground communication network, on the basis of existing communication protocol, has increased to handle management control branch and corresponding interface on the star, controls to the switching under the single-hop communication situation.Following embodiment (particularly is based on 3GPP/UMTS Release 4 reference models [3rd GPP TechnicalSpecification Group Services and Systems Aspects:Network architecture based on the compatible system of 3G; Release 4; 3GPP TS23.002V4.8.0,2003-06]) the example that is embodied as describe.
In the satellite communication system of present embodiment; As shown in Figure 1; The GCS Ground Communication System network element is provided with and adopts the WCDMA communication system to design fully; Be made up of core net and wireless access network, the function corresponding unit all adopts existing unit in each subnet, and just the function of radio network controller is changed to some extent.
On the basis of above-mentioned communication network main body branch; The present embodiment system also comprises the discrete parallel branch that is independent of beyond the communication network main body branch---handle management control branch on the star; The network element design of this branch is succinct, function is concentrated, and only is made up of satellite Control Node and two network elements of satellite path control deivce.
Communication network main body branch is made up of the ground segment Access Network and the ground segment core net of routine.Wherein, Access Network is mainly finished the work and is comprised: the physical layer process of down-conversion, transmission data on the radiofrequency signal, and promptly baseband digital signal signal encoding, decoding and modulation, data link layer deals are especially torn framing open; Error control, network applications management layer; Like telecommunication management, mobile management, flow processs such as RRM.Core net is mainly accomplished the exchange of communication service (like voice service and data service); Flow processs such as corresponding communication management, mobile management and user management, and and other net systems (like public's fixed-line telephone network PSTN, public land mobile communication network PLMN, Internet INTERNET etc.) between interface and intercommunication.
The satellite Control Node links to each other with the satellite path control deivce; Single-hop resource distribution result and control corresponding message on the star of reception satellite path control deivce decision; And notify switch processing unit on the star through signalling path with resource distribution result on the star; Accomplish the switching of switching network on the star and carry out, operations such as this configuration result message comprises resource distribution on the star, reshuffles, release.Generally speaking the satellite Control Node mainly is an XM of directly controlling resource on the star, and itself is not participated in the decision-making of resource distribution, but receives the result of decision of satellite path control deivce, and with it execution.
The satellite path control deivce receive that radio network controller sends about calling out the relevant message of resource on initiation, switching, end of calling etc. and the star; Accomplish the coupling of route messages; Route analysis and decision-making according to resource operating position decision single-hop resource on the star; The configuration of resource on the decision star, reshuffle, operation such as release, then with these message informing satellite Control Node.
In the WCDMA network; User profile is stored in the CN territory; Wireless access network is not known user profile accurately, and in the present embodiment, and satellite path control deivce (SRC) links to each other with radio network controller (RNC) in the ground network; And need provide flow process required user profile related news to SRC, this will improve the function of wireless access network with regard to requiring.Accompanying drawing 2 is radio network controller building-block of logic, and radio network controller is the core network element of wireless access network, therefore, mainly is the improvement to the wireless network controller to the improvement of wireless access network function.As shown in Figure 2, the transformation of RNC is seen it mainly is to have added the Ius interface to link to each other with SRC on interface; Then be to have added the function of handling the relevant signaling message of resource on the satellite star on the function.
The concrete switching flow of present embodiment is as shown in Figure 4; Wherein the flow process of the English mark in left side belongs to the original direct-cut operation flow process of ground WCDMA network basically; The flow process of right side Chinese runic mark then is to accomplish the relevant relevant flow process of satellite network of single-hop resource control, belongs to the distinctive content of present embodiment scheme.The described switching of present embodiment occurs between the wave beam that belongs to different RNCs, and before the switching flow that Fig. 4 describes began, source RNC had confirmed switching target RNC through measuring message etc., with the required message of relevant switching such as object beam information.
The concrete single-hop switch step of present embodiment is following:
1) source RNC (Source RNC) sends single-hop resource reconfiguration request message to satellite path control deivce (SRC): this message is through the Ius interface; After switching, request SRC keeps the required single-hop resource reconfiguration of single-hop communication; Comprise in this message current communicating pair user profile, switch before wave beam information, switching target wave beam information etc., carry out single-hop route analysis and judgement for SRC.
2) source RNC and Target RNC (Target RNC) are set up new wireless connections, to offer the terminal after the switching, specifically may further comprise the steps:
A) (send wireless connections and set up request message: this message is used the RNSAP protocol transmission through the Iur interface to source RNC, and request target RNC carries out the foundation of wireless connections, for the terminal switches to this RNC distributing radio resource to Target RNC.Message parameter comprises cell identifier, the TFS Transport Format Set of data channel, frequency, up link scrambler etc.
B) Target RNC sends wireless connections to target NodeB (Target NodeB) and sets up request message: through Iub interface, use the NBAP protocol transmission.Parameter comprises TFS Transport Format Set, frequency, up link scrambler of cell identifier, data channel etc.
C) if wireless connections (Radio Link is called for short RL) are successfully set up, then return wireless connections and set up response, parameter has signaling link destination node sign, Data-carrying transport layer addressed messages.
D) after Target RNC is received this message, return wireless connections to source RNC and set up response message, parameter has transport layer
Address and adjacent cell list etc.
E) source RNC and Target RNC ask ALCAP to set up Iur and Iub carrying respectively.Request message contains the AAL2 binding logo symbol of DCH and Iub bearing binding etc.
3) satellite path control deivce (SRC) is received single-hop resource reconfiguration request message; The switching target wave beam is carried out route analysis; Make a strategic decision according to resource on the current star; Return single-hop resource reconfiguration response message: this message is informed resource decision result on the RNC star of source (the single-hop resource has or do not have) through the Ius interface.
4) whether source RNC promptly can satisfy switching according to the single-hop resource according to single-hop resource reconfiguration response message, determines following two kinds of different operatings:
If a) the single-hop resource is arranged, then, the terminal keeps the reconfiguration message of the physical channel of single-hop after sending switching, and this message is through the RRC agreement, and reshuffling of physical channel carried out at the notice terminal, to switch to new wave beam.Parameter comprises updating type, cell identifier, wave beam information, down link scrambler, power control messages etc.Start timer, behind 135ms, reshuffle the response response message to the SRC transmission, request SRC reconfigures resource on the star, accomplishes single-hop and switches resource operation on the star that relates to.Postpone 135ms here and be because; In fact need send incoming terminal after satellite is transmitted from RNC to the physical channel reconfiguration message at terminal; Postpone to be 270ms; Do not consider that above ground portion postpones only to have 135ms and send on the star of satellite the resource control messages,, need do the delay of coming in and going out in order to make the interval between resource reconfiguration is reshuffled with terminal channel on the star as far as possible little to reduce the direct-cut operation chain rupture time.
B) if no single-hop resource is then sent the switching back to the terminal and is the physical channel reconfiguration message of double jump, need not to consider timer simultaneously, send to SRC and reshuffle the response response message, request SRC discharges resource on the star in the use.
5) satellite path control deivce SRC sends to satellite Control Node SCN and reshuffles Indication message, and resource reconfiguration operation on the star that request SCN execution SRC makes comprises reconfiguring the single-hop resource or discharging taking resource now.Parameter comprises switching matrix on the star, wave beam information etc.After satellite Control Node SCN receives this message, reshuffle Indication message, require satellite to carry out resource reconfiguration or releasing operation to satellite transmission.Parameter comprises switching matrix etc. on the new star.
6) after completion physical channel in terminal is reshuffled, return RRC message physical channel to source RNC and reshuffle completion message.Source NodeB behind original radio link failure, to source RNC report radio link failure message, RNC will discharge set up and NodeB between wireless connections and network connection resource, the completion handover operation.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being made, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the handover switching method of user terminal under the single-hop mode in the satellite communication system; It is characterized in that; Said satellite communication system comprises handles management control branch on communication network main body branch and the star; Handle management control branch on the said star and comprise the satellite path control deivce, said satellite path control deivce is connected with the radio network controller data of said communication network main body branch, and said method comprises the following steps:
A) radio network controller under the user terminal sends single-hop resource reconfiguration message to the satellite path control deivce, starts the required double jump switch flow process of signaling simultaneously;
B) the satellite path control deivce judges whether the single-hop resource is available; If the single-hop resource can be used; Then radio network controller returns and reshuffles the response response message; Indication satellite path control deivce is carried out the single-hop resource re-allocation, and radio network controller postpones a preset time after the response of receiving this message, and indicating user terminal carries out physical channel and reshuffles; If no single-hop resource allocation is then returned and reshuffled the response response message, indication satellite path control deivce discharges current single-hop resource, and radio network controller carries out physical channel according to double jump link physical channel massage indicating terminal and reshuffles;
C) the satellite path control deivce is notified the satellite executable operations to satellite transmission resource reconfiguration message;
D) radio network controller is accomplished the required ground network operation of user terminal handover.
2. the handover switching method of user terminal in the satellite communication system as claimed in claim 1 under the single-hop mode is characterized in that, said preset time is 135ms.
3. the handover switching method of user terminal under the single-hop mode in according to claim 1 or claim 2 the satellite communication system; It is characterized in that; Handle management control branch on the said star and comprise a satellite Control Node; Said satellite Control Node receives the instruction of satellite path control deivce, realizes configuration and control to satellite resource.
4. the handover switching method of user terminal in the satellite communication system as claimed in claim 3 under the single-hop mode is characterized in that, said communication network main body branch is made up of the ground segment Access Network and the ground segment core net of routine.
5. the handover switching method of user terminal in the satellite communication system as claimed in claim 4 under the single-hop mode is characterized in that, said ground segment Access Network is accomplished down-conversion and the physical layer process of transmitting data on the radiofrequency signal; Said core net is accomplished the communication service exchange, corresponding communication management, mobile management and user management, and and other net systems between interface and intercommunication.
6. the handover switching method of user terminal in the satellite communication system as claimed in claim 5 under the single-hop mode is characterized in that, said communication network main body branch is GSM, IS-95 or WCDMA satellite mobile communication system.
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| CN201010172290XA Expired - Fee Related CN101867959B (en) | 2010-03-09 | 2010-05-14 | Satellite mobile communication network multi-machine collaborative simulation system and method |
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| CN102271288A (en) * | 2011-08-09 | 2011-12-07 | 宋健 | Method for designing OTT TV (over-the-top television) oriented multimodal remote control device |
| CN103970031B (en) * | 2014-05-16 | 2017-03-15 | 中国人民解放军装备学院 | A kind of satellite simulator Integrated simulation system and emulation mode |
| CN104270793A (en) * | 2014-09-18 | 2015-01-07 | 北京邮电大学 | Resource allocation method based on satellite cooperative transmission |
| RU2727185C2 (en) * | 2015-07-31 | 2020-07-21 | Виасат, Инк. | Grouping of satellites with flexible carrying capacity |
| CN105704750B (en) * | 2016-04-06 | 2018-10-30 | 西安交通大学 | The emulation mode of end-to-end link in a kind of emulation of satellite mobile communication system grade |
| WO2017189862A1 (en) * | 2016-04-28 | 2017-11-02 | Qualcomm Incorporated | Handoff for satellite communication |
| CN106094564B (en) * | 2016-06-08 | 2019-03-29 | 江西洪都航空工业集团有限责任公司 | A kind of multi-aircraft cooperative combat Simulation Control device |
| CN107241135B (en) * | 2017-06-30 | 2019-10-15 | 北京邮电大学 | A kind of satellite network switching method and device |
| CN108429578B (en) * | 2018-03-23 | 2019-08-06 | 中国电子科技集团公司第五十四研究所 | A kind of satellite mobile communication system TtT communication means |
| CN109039436B (en) * | 2018-10-23 | 2020-09-15 | 中国科学院信息工程研究所 | Method and system for satellite security access authentication |
| CN110602711B (en) * | 2019-09-11 | 2023-03-14 | 四川安迪科技实业有限公司 | Spectrum resource allocation method, device and system based on satellite network single-hop link establishment |
| CN115276764B (en) * | 2022-07-06 | 2023-07-04 | 四川创智联恒科技有限公司 | Comprehensive simulation system, method and storage medium of low-orbit satellite access network system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101163318A (en) * | 2006-10-13 | 2008-04-16 | 大唐移动通信设备有限公司 | Switch method and apparatus in subscriber terminal access process |
| CN101355787A (en) * | 2007-07-24 | 2009-01-28 | 鼎桥通信技术有限公司 | Method for switching district |
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| US20060045019A1 (en) * | 2004-09-01 | 2006-03-02 | Patzschke Till I | Network testing agent with integrated microkernel operating system |
| CN100553205C (en) * | 2007-09-17 | 2009-10-21 | 北京航空航天大学 | Satellite network protocol simulation system and method |
| CN101483644B (en) * | 2009-03-25 | 2011-08-03 | 南京邮电大学 | Satellite network simulation platform constructing method based on multi-proxy |
-
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| CN101163318A (en) * | 2006-10-13 | 2008-04-16 | 大唐移动通信设备有限公司 | Switch method and apparatus in subscriber terminal access process |
| CN101355787A (en) * | 2007-07-24 | 2009-01-28 | 鼎桥通信技术有限公司 | Method for switching district |
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