CN201947448U - Terminal-bunching ultrahigh-mobility wide-band communication device - Google Patents
Terminal-bunching ultrahigh-mobility wide-band communication device Download PDFInfo
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- CN201947448U CN201947448U CN2010206519137U CN201020651913U CN201947448U CN 201947448 U CN201947448 U CN 201947448U CN 2010206519137 U CN2010206519137 U CN 2010206519137U CN 201020651913 U CN201020651913 U CN 201020651913U CN 201947448 U CN201947448 U CN 201947448U
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Abstract
The utility model discloses a terminal-bunching ultrahigh-mobility wide-band communication device, which relates to a mobile communication device for a rapid transit railway. The wide-band communication device comprises a ground-based subsystem (100) and a vehicle-mounted subsystem (200). A road network gateway unit (120), a ground access unit (110), a vehicle-mounted mobile access unit (220) and a mobile terminal group (210) are communicated sequentially. A road network management unit (130) is communicated with the road network gateway unit (120), the ground access unit (110) and the vehicle-mounted mobile access unit (220) respectively. The terminal-bunching ultrahigh-mobility wide-band communication device introduces a lighting technology method in a handover mechanism so that a delay of a switching process has a close relation with time of turning on and turning off light, and a nanosecond level switch is easier to be achieved by an adoption of an electro-optical switch. A group switch of the terminal group can be completed by an operation of one switching process on an optical layer, and the larger of a terminal bunching is, the more obvious the positive effects of the terminal-bunching ultrahigh-mobility wide-band communication device are.
Description
Technical field
The utility model relates to a kind of high-speed railway mobile communications device, relates in particular to a kind of terminal clustering superelevation mobility broadband connections device.
Background technology
China Express Railway and Line for Passenger Transportation cause are flourish, but supporting with it mobile Communication System for High Speed Railway relatively lags behind, and in the epoch that portable terminal is popularized, the railway wireless broadband access faces new challenge.
Superelevation speed per hour, the totally-enclosed characteristics in compartment are reasons that the bullet train mobile communication faces technical barrier.Current, the mobile communication system that is applied to high-speed railway is the CDMA that has the GSM-R of second generation mobile communication technology feature or have the 3G (Third Generation) Moblie technical characterictic.Because bullet train compartment closure is good, speed per hour is fast, and signal attenuation is than more than the big 10dB of ordinary train, can cause very large influence to the use of mobile communication subscriber.In the reality, using the railway covering system along the line of covering system in the compartment of vehicle-mounted repeater and optical fiber repeater (or radio frequency zooms out), on antinoise signal penetration loss and frequent switching problem, is to be proved to be effective solution.But even existing system in the ideal case, can offer passenger's broadband service level (share with 2Mb/s), wishes that with the passenger requirement that obtains service quality as family's broadband access (monopolizing 2Mb/s) compares, and is also far apart.Depend on traditional mobile communication technology means merely and be difficult to solve the technical barrier that the high-speed railway broadband connections faces.
Tradition mobile communication technology means show developing the limitation of high-speed mobile broadband access aspect following two at least:
1, carrier frequency is low, as 800MHz, and 1800MHz, 1900MHz, 2.4GHz, frequency ranges such as 2.5GHz, the communication bandwidth that provides is little, has only several million to tens Hz, for providing the broadband service of 2Mb/s to realize near each passenger on the train of full (about 1000 people).
2, net system switching process need be finished input, triggering, selection and four steps of execution at portable terminal one by one, and implementation procedure is loaded down with trivial details.Under train high-speed mobile situation, portable terminal density is big, and the words rate is lost in switching and the information packet loss is big.As: travel speed up to 200 kilometers/hour even when higher, compared to normal condition, the speech call completing rate can drop to more than 96% about 81% from original, and cutting off rate also can rise to more than 25% from original 0%, and other speech indexs and data service index all have decline in various degree.
The limitation of above just two aspects becomes the bottleneck based on the technological means development bullet train mobile broadband access of existing mobile communication.
Summary of the invention
The purpose of this utility model is to be applied to the phenomenon that bullet train exists arrowband, big, the frequent switching of switching delay, concurrent switching at existing mobile communication system, and a kind of terminal clustering superelevation mobility broadband connections device is provided.The utility model can not only provide the broadband service more than the average 2Mb/s for the passenger on the approaching full bullet train, and can reduce switching times at double, reduces the switching delay time, eliminates concurrent switching.Under the big more situation of the concentrated scale of portable terminal quantity, advantageous effect of the present utility model is more for obvious.
The purpose of this utility model is achieved in that
One, terminal clustering superelevation mobility broadband connections device (abbreviation device)
This device comprises ground subsystem and vehicle-mounted subsystem;
The ground subsystem comprises ground access unit, road network gateway unit and road network management unit;
Vehicle-mounted subsystem comprises portable terminal group and vehicle-mounted mobile access unit;
Its annexation is:
Road network gateway unit, ground access unit, vehicle-mounted mobile access unit are connected successively with the portable terminal group, and the road network management unit is connected with road network gateway unit, ground access unit, vehicle-mounted mobile access unit respectively.
Two, based on the fast handoff method (abbreviation method) of terminal clustering superelevation mobility broadband connections device
This method comprises the following steps:
1. set up the double-direction radio interface channel between vehicle-mounted mobile access unit and the ground access unit, set up the tunnel between road network gateway unit and the ground access unit and be connected;
2. vehicle-mounted mobile access unit, ground access unit and road network gateway unit send the connection status report to the road network management unit separately;
3. mobile terminal roaming is in railway car, promptly set up adaptive with the communication protocol of vehicle-mounted mobile access unit, vehicle-mounted mobile access unit collects the portable terminal registration that roams in the railway car, and communicating by letter between the portable terminal that is collected and the outer professional network of car acted on behalf of by vehicle-mounted mobile access unit and to be finished;
4. vehicle-mounted mobile access unit sends the transport condition report to the road network management unit, and determines boat position prediction and the time of carrying out synchronously;
5. navigate position prediction with the time of implementation is triggered the vehicle boat position prediction program that vehicle-mounted mobile access unit is identical with the execution of road network management units synchronization synchronously;
6. vehicle-mounted mobile access unit is according to the current underway position of boat position prediction program real-time estimate vehicle, if the cumulative errors of boat position prediction value and train actual position exceed preset value, 5. predictor is proofreaied and correct thereby get back to step, otherwise entered into step 7.;
7. the radio according to default vehicle flight path schedule information and ground access unit covers topology, the road network management unit uses boat position prediction program reckoning train driving position and passes through the time of each radio coverage cell on the flight path, send switching prepositioned instruction, concrete time that notice switch to flight path relevant ground access unit and road network gateway unit along the line then;
If 9. the switching timing Time Triggered of 8. relevant ground access unit and road network gateway unit just enters step, otherwise, get back to step 7.;
9. start by the road network gateway unit handover implementation process leading with relevant ground access unit;
10. the road network management unit is received from the ground access unit that participates in hand-off execution process and the switching complete status report of road network gateway unit, switches implementation process and finishes, and gets back to step 6..
Operation principle:
Structure of the present utility model is based on three aspects and considers: the one, consider that from the transmission bandwidth aspect carrier wave is that the radio signal of 10GHz to 100GHz has abundant bandwidth, and can provide to reach the above message transmission rate of 1000Mb/s; The 2nd, consider that from the transmission range aspect atmospheric attenuation feature of the radio signal of 10GHz to 100GHz is obvious, propagation distance and frequency in atmosphere are inversely proportional to, and use optical fiber this high-frequency microwave signal can be zoomed out to the BAP(broadband access point) more than 10 kilometers; The 3rd, consider that from wireless coverage efficient aspect high-frequency microwave signal overlay area diameter is fit to the long and narrow route characteristics of high-speed railway about hundred meters, it is higher to cover efficient.Therefore, more than three outstanding characteristics make and the optical fiber transmission technique of radio signal of this carrying 10GHz to 100GHz promptly be called light-carried wireless electricity (Radio over Fiber), can implement the vehicle-ground broadband access and use.
Yet, being developed to nearly 450 kilometers high-speed railway for speed per hour, mobile communication system must face serious handover problem under the picocell about hundred meters covers.Be different from the changing method of traditional mobile communication system, fast handoff method of the present utility model is based on regards as a group user with users all on the bullet train, in case group user enters train, be installed in the access device of the train multi-modulation scheme communication interface of car body top, to continue to keep in touch for these passengers provide public special use to insert passage with the external world, if special-purpose insert passage can not or not enough, the user still can use original wireless connections to keep and extraneous getting in touch.Train is run at high speed in the process, the advanced positions of ground subsystem prediction train, and the writing to each other of maintenance and group user.When each user crossed over the sub-district, vehicle-mounted mobile access unit need not to do any change action, according to the position of prediction and known train flight path route, was that corporate users is carried out the integral body switching by the ground subsystem when vehicle enters the overlapping region of neighbor cell.This switching operating process, with the difference of number of users in the group, minimizing switching times that can tenfold, moreover, handoff procedure has reduced the signal scanning measuring process, and handover delay is greatly improved, just as having a portable antenna to follow the bullet train high-speed mobile along the railway.
The utlity model has following advantage and good effect:
1. the utility model is introduced the optical tech means in handoff mechanism, and the delay of switching flow and optical switch are closely related operate time, adopts electrooptical switching more can realize the switching of nanosecond;
2. the utility model utilizes and carries out switching flow on the photosphere and can finish the group of terminal group and switch, and has avoided occurring in the handover procedure carrying out loaded down with trivial details hand off signaling expense for each station terminal in the system, so has alleviated the load of communication system;
3. adopt the wireless connections of 60GHz carrier wave between the vehicle-ground, access bandwidth can be to the gigabit level;
4. to converge scale big more for terminal, and good effect of the present utility model is obvious more.
Description of drawings
Fig. 1 is the block diagram of this device;
Fig. 2 is the block diagram of ground access unit;
Fig. 3 is the block diagram that the center is inserted on ground;
Fig. 4 is the block diagram of road network management unit;
Fig. 5 is the block diagram of vehicle-mounted mobile access unit;
Fig. 6 is the block diagram at vehicle-mounted mobile access center;
Among Fig. 1～Fig. 6:
100-ground subsystem,
110-ground access unit,
The 111-spaced antenna,
112-Optical Fiber Transmission distributed lines,
The center is inserted on 113-ground,
1130-LASER Light Source group, 1131-photodetection module group, 1132-base station/base station controller group,
1133-ground mobile switching centre, 1134-optical modulator pond, the full optical switching matrix of 1135-,
The 1136-control logic, 1137-the 1st wavelength division multiplexer, 1138-the 2nd wavelength division multiplexer,
1139-optical fiber;
114-multi-standard communication network interface;
120-road network gateway unit;
130-road network management unit;
The vehicle-mounted subsystem of 200-,
210-portable terminal group;
The vehicle-mounted mobile access unit of 220-;
The 221-spaced antenna,
222-Optical Fiber Transmission distributed lines,
The vehicle-mounted mobile access of 223-center,
The 2231-LASER Light Source, the 2232-optical modulator, the 2233-12 wavelength division multiplexer,
The 2234-photoelectric conversion module, 2235-radio frequency processing module,
The vehicle-mounted mobile switching centre of 2236-, 2237-base station/base station controller group
224-multi-modulation scheme communication interface.
Fig. 7 is the signaling process figure of passage of connecting between vehicle-mounted mobile access center and the ground subsystem;
Fig. 8 is the signaling process figure that the portable terminal registration collects;
Fig. 9 is boat position prediction and synchronous signaling process figure;
Figure 10 is the signaling process figure of the handover implementation process in the same ground access unit GAU;
Figure 11 is the signaling process figure of the handover implementation process between the Different Ground access unit GAU;
Figure 12 is a high-speed railway ground subsystem structure chart, among Figure 12:
300-integrated service network; The 400-rail; 500-radio coverage cell.
Figure 13 is the vehicle-mounted subsystem structure chart of bullet train, among Figure 13:
The 600-bullet train; 700-multi-modulation scheme antenna.
Embodiment
Describe in detail below in conjunction with drawings and Examples:
One, terminal clustering superelevation mobility broadband connections device (abbreviation device)
1, overall
As Fig. 1, this device comprises ground subsystem 100 and vehicle-mounted subsystem 200;
Vehicle-mounted subsystem 200 comprises portable terminal group 210 and vehicle-mounted mobile access unit 220;
Its annexation is:
Road network gateway unit 120, ground access unit 110, vehicle-mounted mobile access unit 220 are connected successively with portable terminal group 210, and road network management unit 130 is connected with road network gateway unit 120, ground access unit 110, vehicle-mounted mobile access unit 220 respectively.
2, functional block
1) ground access unit (Ground-based Acess Unit, GAU) 110
There is the two-way communication tunnel between ground access unit 110 interface that to be vehicle-mounted mobile access units 220 get in touch with ground subsystem 100, it and road network gateway unit 120;
As Fig. 2, ground access unit 110 comprises that being connected to spaced antenna 111, Optical Fiber Transmission distributed lines 112, the ground of laying on the motion carrier travel route in turn on the way inserts center 113 and multi-standard communication network interface 114.
(1) distance of the arrangement between the spaced antenna 111 is mainly by the microwave frequency band propagation characteristic that is adopted and system's index switching time decision.
(2) Optical Fiber Transmission distributed lines 112 is made up of some single modes or multimode fiber, wavelength division multiplexer.
(3) center 113 is inserted on ground
As shown in Figure 3, access center 113 in ground comprises LASER Light Source group 1130, photodetection module group 1131, base station/base station controller group 1132, ground mobile switching centre 1133, optical modulator pond 1134, full optical switching matrix 1135, control logic the 1136, the 1st wavelength division multiplexer the 1137, the 2nd wavelength division multiplexer 1138 and optical fiber 1139;
Its annexation is:
Full optical switching matrix 1135 is connected with LASER Light Source group 1130, photodetection module group 1131, optical modulator pond 1134, control logic 1136 and the 1st wavelength division multiplexer 1137 respectively;
The 1st wavelength division multiplexer 1137, optical fiber 1139 and the 2nd wavelength division multiplexer 1138 are connected successively;
Ground mobile switching centre 1133 is connected with base station/base station controller group 1132, and base station/base station controller group 1132 is connected with optical modulator pond 1134 with photodetection module group 1131 respectively.
More particularly, LASER Light Source group 1130 is connected via the port one 135a of optical fiber with full optical switching matrix 1135; Exist cable to be connected between the port one 135b of full optical switching matrix 1135 and the control logic module 1136, port one 135c is connected to the port one 134a in optical modulator pond 1134 by optical fiber, port one 135d is connected by optical fiber with the port one 134c in optical modulator pond 1134, port one 135e is connected with the 1st wavelength division multiplexer through optical cable, and port one 135f is connected to the port one 131a of photodetection module group 1131 by optical cable; The port one 134b in optical modulator pond 1134 is connected by cable with base station controller group 1132 port one 132a; The port one 132b of base station controller group 1132 links to each other by the port one 131b of cable with photodetection module group 1131; Be connected by optical fiber 1139 between the 1st wavelength division multiplexer 1137 and the 2nd wavelength division multiplexer 1138; Be connected by optical fiber 112 between the 2nd wavelength division multiplexer 1138 and the spaced antenna 111; Be connected by cable between ground mobile switching centre 1133 and the base station/base station controller group.
Its operation principle is:
LASER Light Source group 1130 outputs laser signal different wave length, continuous is imported to the light signal port one 135a of full optical switching matrix 1135 respectively by optical fiber; Control logic 1136 relies on computer software to realize, affact the control end 1135b of full optical switching matrix 1135 (as Polatis OSM assembly of selecting for use the JDSU of Canada Company to produce) then by the signal of telecommunication, the continuous laser signal of LASER Light Source group 1130 outputs is switched to one group of port one 135c of full optical switching matrix 1135; The light signal of port one 135c is directed to the port one 134a in optical modulator pond 1134; Optical modulator is a kind of opto-electronic device (as Tx A38C:Journal of Lightwave technology that selects for use Korea S ETRI to develop that transmits on the light signal that information on the signal of telecommunication is moved, Vol.26, No.1, August 1,2008, the page number: 2379-2387), the light signal that obtain this moment is called as modulated optical signal; A plurality of optical modulators put together promptly forms optical modulator pond (1134); The signal of telecommunication of base station/base station controller group 1132 outputs is by one group of port one 132a, be connected to the electric signal input end mouth 1134b in optical modulator pond 1134 by cable, modulated optical signal is fed into the port one 135d of full optical switching matrix by optical fiber by output port 1134c; The modulated optical signal of port one 135d is routed to port one 135e by full optical switching matrix 1135 under the effect of control logic; Port one 135e is connected to the 1st wavelength division multiplexer 1137 by one group of optical fiber, and the different wave length modulated optical signal that port one 135e is obtained merges in the optical fiber 1139 to be transmitted; The 2nd wavelength division multiplexer 1138 is separated the different wave length modulated optical signal and is sent into Optical Fiber Transmission distributed lines 112; Modulated optical signal is transferred to spaced antenna 111 by Optical Fiber Transmission distributed lines 112, finishes the conversion of light signal to radio signal at spaced antenna 111, and information is propagated by radio bearer again;
The radio signal that receives from spaced antenna 111 is converted into modulated optical signal, then successively by Optical Fiber Transmission distributed lines the 112, the 2nd wavelength division multiplexer 1138, optical fiber the 1139, the 1st wavelength division multiplexer 1137, port one 135e, full optical switching matrix 1135, port one 135f, modulated optical signal is received and is reduced into the modulated signal of telecommunication at port one 131a by photodetection module group 1131, by port one 131b by cable feed-in base station/base station controller port one 132b; The photodetector 100G PD of German U2t company (as select for use) is a kind of light signal to be converted to the opto-electronic device of the signal of telecommunication, and it is the core devices that constitutes the photodetection module, and a plurality of photodetection modules can be formed photodetection module group.
Base station/base station controller group 1132 is pooled to ground mobile switching centre 1133 to the signals that receive, and exists two-way communication to be connected between the ground mobile switching centre 1133; Ground mobile switching centre 1133 is transferred to business network to service signal automatically.
(4) the multi-standard communication network interface 114
Be connected by multi-standard communication network interface 114 between ground mobile switching centre 1133 and the road network gateway 120, interface comprises the network interface of multiple openings such as IP, ATM, TDM.
2) road network gateway unit (Road Network Gate, RNG) 120
Road network gateway unit 120 is convergent points of other operation systems visit native systems, also is the spaced point of the utility model system visit all kinds operation system, it with all kinds operation system between have two-way the connection;
Road network gateway unit 120 is that road network is to the gateway between the integrated service network, except that the communication protocol conversion fundamental characteristics that possesses existing gateway, function in the utility model also comprises the instruction of acceptance from road network management unit 130, sets up it and specifies tunnel route between the ground access unit 130.
3) the road network management unit 130
Road network management unit 130 is management and control centres of native system, by communicating to connect the state information of collecting from vehicle-mounted mobile access unit 220, ground access unit 110 and road network gateway unit 120, or send the control corresponding instruction to these three unit and implement management and control, be the software entity that ground access unit 110, road network gateway unit 120 and vehicle-mounted mobile access unit 220 are carried out mobile management, configuration, maintenance, working state monitoring and control.
Road network management unit 130 selects for use rising deeply of Chinese Legend Company development to hold up day desktop TFlops high-performance server and (SuSE) Linux OS is formed the operational environment that the road network management Control Software is moved;
As Fig. 4, road network management unit 130 comprises bullet train location management and handoff predictions module 131, road network topology administration module 132, road network geographical information management module 133, message processing module 134, synchronous prediction algorithm module 135 and portable terminal group administration module 136;
Its interactive relation is: message processing module 134 receives request message or the status report messages from other unit of road network, is transmitted to bullet train location management and handoff predictions module 131 after message is resolved; Bullet train location management and handoff predictions module 131 are determined vehicle operating position and state according to the information that status report, road network topology administration module 132, road network geographical information management module 133 and portable terminal group administration module 136 provide, for handoff predictions module 131 provides the history run status data; Switchover policy is by forming according to positional information and prediction result.
4) portable terminal group (Mobile Station Group, MSG) 210
Portable terminal group 210 is general names of communication user independently, it with vehicle-mounted mobile access unit 220 between keep two-way communication to be connected.
Portable terminal is meant based on various communication protocols and realizes to possess the mobile communication terminal of network identity, comprises electronic installations such as mobile phone, portable computer, mobile television.Portable terminal group 210 is meant the set of the some portable terminals that satisfy following all features, specifically be characterized as: when some portable terminals of dispersion, separate state that are in for certain needs, flocked together relatively, along with certain carrier moves towards certain concrete direction with identical translational speed, identical moving direction, just constituted the portable terminal group (210) of native system indication.Fixed computing terminal on the carrier can belong to portable terminal group 210 equally.
5) vehicle-mounted mobile access unit (Vehicle Mobile Access Unit, VMAU) 220
The organization and management person that vehicle-mounted mobile access unit 220 is portable terminal groups 210, it with ground access unit 110 between exist two-way communication and be connected.
As Fig. 5, vehicle-mounted mobile access unit 220 comprises spaced antenna 221, Optical Fiber Transmission distributed lines 222, vehicle-mounted mobile access center 223 and the multi-modulation scheme communication interface 224 that connects successively.
Vehicle-mounted mobile access unit 220 is arranged on the motion carrier of high-speed mobile.Wherein vehicle-mounted mobile access center (Vehicle Mobile Accessing Center, VMAC) 223 not only possess conventional func such as call treatment, Operation and Maintenance, interworking between network and charging, also have multiplexing tandem, a specific function of the group management of standing, motion positions prediction and assisted hand-off.Its multi-modulation scheme communication interface 224 is used for the portable terminal of adaptive various communication standards.
As Fig. 6, vehicle-mounted mobile access center 223 comprises LASER Light Source 2231, optical modulator 2232,1 * 2 wavelength division multiplexer 2233, photoelectric conversion module 2234, radio frequency processing module 2235, vehicle-mounted mobile switching centre 2236 and base station/base station controller group 2237;
Its annexation is:
Its operation principle is:
The signal uplink direction, after multi-modulation scheme communication interface 224 collects service signal from different terminals, by cable the signal of telecommunication is input to base station/base station controller group 2237, give vehicle-mounted mobile switching centre 2236 again and be sent to radio frequency processing module 2235 again after these signal gatherings, radio frequency processing module 2235 is carried out subcarrier multiplexing with the service signal of terminal group, be admitted to the electric signal input end of optical modulator 2232 through multiplexing signal, and then finish the process of signal of telecommunication modulated laser light signal, modulated optical signal imports wavelength division multiplexer 2233 by optical fiber, is transferred to spaced antenna 221 by Optical Fiber Transmission distributed lines 222 after closing ripple;
The signal downlink direction, be transferred to the modulated optical signal of wavelength division multiplexer 2233 by Optical Fiber Transmission distributed lines 222, finish the demodulation of light through being admitted to photoelectric conversion module 2234 behind the partial wave to electricity, the subcarrier signal of telecommunication that demodulation obtains is fed into radio frequency processing module 2235 by cable, the signal of telecommunication is sent to vehicle-mounted mobile switching centre 2236 by radio frequency processing module 2235, service signal is separated and by different communication standards service signal is flowed to relevant base station/base station controller group 2237, sends to each type communication terminal on the train by multi-modulation scheme communication interface 224 thus again.
Two, changing method
Based on above description scheme, the signaling process of this changing method is shown in Fig. 7,8,9,10 and 11.
1, connect between vehicle-mounted mobile access center and the ground subsystem signaling process of passage
As Fig. 7, the signaling process of this interface channel is:
A, after the input identifying of finishing physically, vehicle-mounted mobile access unit VMAU at first sends MSG_CONN_REQ 71 message to neighbour's ground access unit RAU_x, i.e. request establishes a communications link, and includes the essential informations such as network identity of vehicle-mounted mobile access unit in this message at least;
B, ground access unit RAU_x send message RAU_CONN_RSP 72 to vehicle-mounted mobile access unit VMAU after receiving MSG_CONN_REQ 71 message, promptly reply response, this message comprises the network identity of ground access unit RAU_x, the antenna number that is inserting, interface identifier and optical wavelength sign at least;
C, vehicle-mounted mobile access unit VMAU send message MSG_STAT_RPT 73 to road network management unit R NMU, promptly report self current motion state and communication connection status, and this message comprises travel speed, current location information at least;
D, the ground access unit RAU_x that has set up after the wireless connections with vehicle-mounted mobile access unit VMAU send RAU_TNL_REQ 74 message to road network gateway RNG, a two-way communication tunnel is set up in i.e. request, and this message comprises information such as the connection identifier, interface identifier of ground access unit RAU_x at least;
After E, road network gateway RNG receive RAU_TNL_REQ 74 message, for ground access unit RAU_x to distributing between the road network gateway RNG and setting up a communication tunnel, access unit RAU_x sends message RNG_TNL_RSP 75 earthward then, promptly as the response to distributing and setting up a communication tunnel, this message content comprises network connection identifier, the interface identifier of communication tunnel;
F, ground access unit RAU_x send message RAU_STAT_RPT 76 to road network management unit R NMU, i.e. status report, and message content comprises the essential information of communication tunnel.
2, portable terminal is registered the signaling process that collects
As Fig. 8, the signaling process that the portable terminal registration collects is:
A, mobile terminal MS _ x send message MSX_ADM_REQ 81 to vehicle-mounted mobile access unit VMAU, i.e. request allows registration, and this message comprises portable terminal sequence number and network insertion sign indicating number information;
After B, vehicle-mounted mobile access unit VMAU receive MSX_ADM_REQ 81, just the information of mobile terminal MS _ x is added in the customer data base of self, and the only network sign of adhering to this vehicle-mounted mobile access unit VMAU for this log-on message, reply message VMAU_ADM_RSP 82 subsequently, promptly as this registration is collected the confirmation of finishing;
C, vehicle-mounted mobile access unit VMAU send message MSX_ADM_RPT 83 to road network management unit R NMU, promptly the log-on message of portable terminal are sent to road network management unit R NMU.
3, boat position prediction and synchronous signaling process
As Fig. 9, boat position prediction and synchronous signaling process are:
A, vehicle-mounted mobile access unit VMAU send message VMAU_STATUS_RPT91 to road network management unit R NMU, and the status report that promptly travels, this message content comprise the current speed per hour of vehicle, geographical position, course information at least;
B, road network management unit R NMU send message RNMU_STATUS_RSP92 to vehicle-mounted mobile access unit VMAU, promptly as the answer of receiving VMAU_STATUS_RPT 91 message is confirmed;
C, vehicle-mounted mobile access unit VMAU send message VMAU_DR_STR 93 to road network management unit R NMU, the position prediction initiation message of promptly navigating, and this message content comprises the time that agreement road network management unit R NMU starts the boat position prediction at least;
D, road network management unit R NMU send message RNMU_DR_RSP 94 promptly as the answer of receiving VMAU_DR_STR 93 message is confirmed to vehicle-mounted mobile access unit VMAU;
E, agreement start the Time Triggered of boat position prediction, road network management unit R NMU carries out identical boat position prediction 95 programs simultaneously with vehicle-mounted mobile access unit VMAU, vehicle-mounted mobile access unit VMAU whenever extrapolates a boat position prediction value and just compares with boat position actual value, when boat position prediction value-boat position actual value＜set point, the position prediction 95 of just proceeding to navigate is calculated, otherwise, enter the F step;
F, send message VMAU_STATUS_UPD 96 by vehicle-mounted mobile access unit VMAU to road network management unit R NMU, the state that promptly travels upgrades, and comprises the current speed per hour of vehicle, geographical position, course information and agreement in this message and resets time of boat position prediction;
After G, road network management unit R NMU receive VMAU_STATUS_UPD 96 message, send message RNMU_STATUS_UPD-RSP 97, promptly as the answer of receiving VMAU_STATUS_UPD 96 message is confirmed to vehicle-mounted mobile access unit VMAU;
The Time Triggered of H, agreement replacement boat position prediction is got back to the E step, and road network management unit R NMU and vehicle-mounted mobile access unit VMAU will restart boat position prediction 95;
Above A～H step lasts till that always system exception withdraws from or is ended to carry out by the user.
4, the signaling process of handover implementation process
As Figure 10, the signaling process that occurs in the handover implementation process in the same ground access unit GAU is:
A, road network management unit R NMU are in conjunction with the flight path geography information of oneself pre-installing, utilize boat position prediction 95 programs to calculate the time that occurs in 500 switchings of neighboring radio coverage cell, send message RNMU_HORDY_NTF 01 to this road network access unit GAU_i then, i.e. switching presets, and this message content comprises the numbering and the Preset Time of neighboring radio coverage cell 500 antennas 111 that are about to switch;
B, the ground access unit GAU_i that receives RNMU_HORDY_NTF 01 message send message GAU_HORDY_NTF 02 to road network management unit R NMU, promptly as the answer of receiving message RNMU_HORDY_NTF 01 is confirmed;
The reservation that C, ground access unit GAU_i carry out new optical wavelength distributes, the switching preheating setting time for the treatment of the GAU_i place triggers, just start the wavelength route and switch 03, promptly control logic 1136 is affacted optical switching matrix 1135, the radiofrequency signal of former optical wavelength carrying is modulated onto on the new optical wavelength;
D, ground access unit GAU_i to road network management unit R NMU transmission message GAU_HO_CNF 04, promptly switch and finish after finishing the wavelength route to switch 03;
Through above A～D step, promptly execute once the handover procedure in the same ground access unit GAU.
As Figure 11, the signaling process that occurs in the handover implementation process between the Different Ground access unit GAU is:
A, road network management unit R NMU are in conjunction with the flight path geography information of oneself pre-installing, utilize the time of origin of boat position prediction 95 programs reckoning in 500 switchings of radio coverage cell of certain adjacent ground access unit GAU_old and GAU_new, send message RNMU_HORDY_NTF 11 to original ground access unit GAU_old then, i.e. switching presets, and this message content comprises ground, the adjacent road access unit GAU numbering that is about to switch, the numbering and the switching preheating setting time of neighboring radio coverage cell 500 antennas 111;
B, the original ground access unit GAU_old that receives RNMU_HORDY_NTF 11 message send a message GAU_INFTRS_NTF 12 to new ground access unit GAU_new, promptly notify the reservation of new optical wavelength and communication tunnel interface to distribute;
C, new ground access unit GAU_new send message GAU_INFTRS_RSP 13 to original ground access unit GAU_old, promptly as the answer of receiving message GAU_INFTRS_NTF 12 is confirmed;
D, new ground access unit GAU new send message GAU_TNL_REQ 14 to road network gateway RNG, promptly ask communication tunnel to be reserved;
E, road network gateway RNG send RNG_TNL_PRES 15 message to new ground access unit GAU_new, and promptly communication tunnel is reserved response;
F, road network gateway RNG send message RNG_TNLRDY_NTF 16 to road network management unit R NMU, and promptly the notifying communication tunnel is reserved and finished, and this message comprises communication tunnel and reserves the state information of having finished;
The to be switched scheduled time such as G, road network management unit R NMU triggers, in case trigger, just sends message RNMU_HO_STAT 17 to road network gateway RNG, promptly switches and carries out, and this message comprises the execution command of switching;
H, road network gateway RNG send message RNG_TNL_FREE 18 for former road network access unit GAU_old, promptly discharge former communication tunnel resource;
I, RNG enable and reserve good communication tunnel between new ground access unit GAU_new and the road network gateway RNG, this communication tunnel is reserved in E step and finishes, communicating to connect of portable terminal group 210 smoothedly under not interrupted situation switches to new communication tunnel, is the tunnel and switches 19;
After J, tunnel switching 19 were finished, road network gateway RNG sent message RNG_HO_RSP 20 for road network management unit R NMU, promptly as the confirmation that this switching is finished.
Ten steps through above A～J promptly execute the handover implementation process between the Different Ground access unit GAU one time.
Handover implementation process in the same ground access unit GAU and the handover implementation process between the Different Ground access unit GAU alternately occur along with the train high-speed mobile, thereby the signaling process of Figure 10 and Figure 11 is alternately carried out.
Three, use
1, ground subsystem network configuration
As Figure 12, ground subsystem structure comprises integrated service network 300, road network gateway unit 120, road network management unit 130, access center 113, ground, Optical Fiber Transmission distributed lines 112, spaced antenna 111, rail 400 and radio coverage cell 500;
Its annexation is:
2, vehicle-mounted subsystem network configuration
As Figure 13, vehicle-mounted subsystem structure comprises rail 400, bullet train 600, multi-modulation scheme antenna 700, portable terminal group 210, spaced antenna 221, Optical Fiber Transmission distributed lines 222 and vehicle-mounted mobile access center 223;
Its annexation is:
Portable terminal group 210 is pooled to bullet train 600 each section compartments with roaming state, and there is dedicated radio link between the multi-modulation scheme antenna of settling in the compartment 700, the multi-modulation scheme antenna of installing in bullet train 600 each section compartments 700 connects the back tandem to vehicle-mounted mobile access center 223 by optical fiber, vehicle-mounted mobile access center 223 is connected by Optical Fiber Transmission distributed lines 222 with train antenna 221, train antenna 221 as requested can by many antennas form and road surface antenna 111 between have dedicated radio link.
3, the utility model is equally applicable to the mobile communication service on other concentrated relatively public transports of terminal, as aircraft, steamer, bus, subway etc.
Claims (3)
1. terminal clustering superelevation mobility broadband connections device is characterized in that:
Comprise ground subsystem (100) and vehicle-mounted subsystem (200);
Ground subsystem (100) comprises ground access unit (110), road network gateway unit (120) and road network management unit (130);
Vehicle-mounted subsystem (200) comprises portable terminal group (210) and vehicle-mounted mobile access unit (220);
Its connected relation is:
Road network gateway unit (120), ground access unit (110), vehicle-mounted mobile access unit (220) and portable terminal group (210) are communicated with successively, and road network management unit (130) are communicated with road network gateway unit (120), ground access unit (110), vehicle-mounted mobile access unit (220) respectively.
2. by the described terminal clustering of claim 1 superelevation mobility broadband connections device, it is characterized in that:
Described ground access unit (110) comprises that being connected to spaced antenna (111), Optical Fiber Transmission distributed lines (112), the ground of laying on the motion carrier travel route in turn on the way inserts center (113) and multi-standard communication network interface (114);
Described ground is inserted center (113) and is comprised LASER Light Source group (1130), photodetection module group (1131), base station/base station controller group (1132), ground mobile switching centre (1133), optical modulator pond (1134), full optical switching matrix (1135), control logic (1136), the 1st wavelength division multiplexer (1137), the 2nd wavelength division multiplexer (1138) and optical fiber (1139);
Its annexation is:
Full optical switching matrix (1135) is connected with LASER Light Source group (1130), photodetection module group (1131), optical modulator pond (1134), control logic (1136) and the 1st wavelength division multiplexer (1137) respectively;
The 1st wavelength division multiplexer (1137), optical fiber (1139) and the 2nd wavelength division multiplexer (1138) are connected successively;
Ground mobile switching centre (1133) is connected with base station/base station controller group (1132), and base station/base station controller group (1132) is connected with optical modulator pond (1134) with photodetection module group (1131) respectively.
3. by the described terminal clustering of claim 1 superelevation mobility wide-band communication system, it is characterized in that:
Described vehicle-mounted mobile access unit (220) comprises spaced antenna (221), Optical Fiber Transmission distributed lines (222), vehicle-mounted mobile access center (223) and the multi-modulation scheme communication interface (224) that connects successively;
Described vehicle-mounted mobile access center (223) comprises LASER Light Source (2231), optical modulator (2232), 1 * 2 wavelength division multiplexer (2233), photoelectric conversion module (2234), radio frequency processing module (2235), vehicle-mounted mobile switching centre (2236) and base station/base station controller group (2237);
Its annexation is:
LASER Light Source (2231), optical modulator (2232), wavelength division multiplexer (2233) are connected by optical fiber successively, be connected by optical fiber between wavelength division multiplexer (2233) and the photoelectric conversion module (2234), photoelectric conversion module (2234), radio frequency processing module (2235), vehicle-mounted mobile switching centre (2236) and base station/base station controller group (2237) is connected by cable successively, is also connected by cable between radio frequency processing module (2235) and the optical modulator (2232).
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| CN2010206519137U CN201947448U (en) | 2010-12-10 | 2010-12-10 | Terminal-bunching ultrahigh-mobility wide-band communication device |
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| CN2010206519137U CN201947448U (en) | 2010-12-10 | 2010-12-10 | Terminal-bunching ultrahigh-mobility wide-band communication device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045650A (en) * | 2010-12-10 | 2011-05-04 | 中南民族大学 | Station-bunched ultrahigh-mobility wide-band communication system and quick handover method thereof |
| CN103220738A (en) * | 2013-04-19 | 2013-07-24 | 北京邮电大学 | Data communication system for high-speed railway and communication method thereof |
| CN105966423A (en) * | 2016-06-20 | 2016-09-28 | 云传电扬科技（北京）有限责任公司 | High-speed train internet system based on visible light communication technology |
-
2010
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045650A (en) * | 2010-12-10 | 2011-05-04 | 中南民族大学 | Station-bunched ultrahigh-mobility wide-band communication system and quick handover method thereof |
| CN102045650B (en) * | 2010-12-10 | 2013-01-09 | 中南民族大学 | Station-bunched ultrahigh-mobility wide-band communication system and quick handover method thereof |
| CN103220738A (en) * | 2013-04-19 | 2013-07-24 | 北京邮电大学 | Data communication system for high-speed railway and communication method thereof |
| CN103220738B (en) * | 2013-04-19 | 2016-03-02 | 北京邮电大学 | A kind of data communication system used for high-speed railway and communication means thereof |
| CN105966423A (en) * | 2016-06-20 | 2016-09-28 | 云传电扬科技（北京）有限责任公司 | High-speed train internet system based on visible light communication technology |
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