CN101192901B - Information interaction device and method for auxiliary device and auxiliary device maintenance terminal - Google Patents
Information interaction device and method for auxiliary device and auxiliary device maintenance terminal Download PDFInfo
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- CN101192901B CN101192901B CN2007101017334A CN200710101733A CN101192901B CN 101192901 B CN101192901 B CN 101192901B CN 2007101017334 A CN2007101017334 A CN 2007101017334A CN 200710101733 A CN200710101733 A CN 200710101733A CN 101192901 B CN101192901 B CN 101192901B
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Abstract
The invention discloses a method for transmitting the information from the maintenance terminal of an auxiliary device to the auxiliary device, which comprises the following steps that: the communication connection is established between the maintenance terminal and a server for operation and maintenance center through an interface and the maintenance terminal sends the information to the server for operation and maintenance center; the server for operation and maintenance center encapsulates and identifies the information and remotely transmits the encapsulated information to a distal main device; the distal main device carries out the decapsulation of the encapsulated information and sends the processed information to the auxiliary device by using the standard protocol. The invention also provides a method for transmitting the information from the auxiliary device to the maintenance terminal of the auxiliary device and a device used for implementing the information exchange between the auxiliary device and the maintenance terminal of the auxiliary device, thus providing an information transparence transmission method and a device in which the private transmission bandwidth does not need to be occupied and the auxiliary device does not need to focus on the complicated and diversified transmission protocols for main device.
Description
Technical field
The present invention relates to information transparency transmission field in the mobile communcations system, relate in particular to the information interactive device and the method for auxiliary equipment and auxiliary equipment maintenance terminal.
Background technology
In mobile communcations system, there are two kinds of main equipments of base station and base station controller.The base station generally is dispersed in the different territorial environments with base station controller, between the distance several kilometers or tens kilometers.The transmission link that existing transmission system provides between base station and the base station controller is used for the transmission of data such as voice, data, signaling, Operation and Maintenance.Transmission link comprises the middle BTS of Abis link, GSM (Golbal System for Mobile Communic-ations) and middle NodeB (base-station node) of Abis link, WCDMA (broadband CDMA system) between the BSC and the lub mouth between the RNC (radio network controller) between middle BTS (base station transceiver) of CDMA/CDMA2000 (code division multiple access) and the BSC (base station controller).
In mobile communcations system is used,, also have auxiliary equipment such as power-supply device, environmental monitoring system except the base station main equipment.From the cost consideration of transmission link, generally can not provide the dedicated transmissions link of auxiliary equipment in addition.This just requires auxiliary equipment can utilize the existing transmission link of main equipment to realize transfer of data.Because the auxiliary equipment data volume is generally all smaller, its data protocol is also simple relatively, does not generally also have complicated host-host protocol.Therefore, during the transmission link of backup utility main equipment, should not require auxiliary equipment to understand or realize the multiple transport protocols of main equipment.Only require the auxiliary equipment data can simply insert main equipment, transparent transmission in the master transmissions link.
The partial fixing bandwidth of general specific base of existing transmission method and base station controller transmission link is used to transmit data.This method has the following disadvantages: need consider the multiple different access waies between base station and the base station controller during auxiliary equipment transmission data, increase enforcement and maintenance cost.Auxiliary equipment all will fixedly take certain transmission bandwidth no matter whether transfer of data is arranged, and has the waste of resource.
Therefore, need a kind of dedicated transmissions bandwidth that do not need to take, information transparency transmission method and device that auxiliary equipment does not need to be concerned about the complicated and diversified host-host protocol of main equipment yet solve the problems referred to above.
Summary of the invention
To achieve these goals, according to an aspect of the present invention, provide a kind of and be used for maintenance terminal from auxiliary equipment to the auxiliary equipment method of transmitting information.
This method may further comprise the steps: maintenance terminal and operation maintenance center's server establish a communications link by interface, and the use host-host protocol identical with the main equipment data sends to operation maintenance center's server with information; Operation maintenance center's server is the information package identification, and will be through the encapsulated information long-distance transmissions to the far-end main equipment; And by using above-mentioned host-host protocol, the far-end main equipment will and send to auxiliary equipment through the encapsulated information decapsulation.
This method comprises also that with process encapsulated information long-distance transmissions to the far-end main equipment, it may further comprise the steps: operation maintenance center's server will upload on the central machine room main equipment through encapsulated information; And the central machine room main equipment will be transferred to the far-end main equipment through encapsulated information.
In addition, in the method, the content of information comprises at least one or their combination in device type, destination address, the auxiliary equipment information payload, content through encapsulated information comprises the auxiliary equipment message identification, and comprise at least one or their combination in device type, destination address, the auxiliary equipment information payload, the content of the information of process decapsulation comprises the auxiliary equipment information payload, and standard agreement comprises standard serial communication protocol and TCP.Wherein, the far-end main equipment is base station transceiver or base-station node, and the central machine room main equipment is base station controller or radio network controller.
According to a further aspect in the invention, providing a kind of is used for from the maintenance terminal method of transmitting information of auxiliary equipment to auxiliary equipment.
This method may further comprise the steps: auxiliary equipment establishes a communications link with identical standard agreement with the far-end main equipment, and auxiliary equipment sends to the far-end main equipment with information; The far-end main equipment is the information package identification, and by using standard agreement, will arrive the central machine room main equipment through the encapsulated information long-distance transmissions; According to process encapsulated information content, the central machine room main equipment will separate through encapsulated information, and download to operation maintenance center's server; And operation maintenance center's server will be through the information decapsulation that separates, and sends to the maintenance terminal of corresponding auxiliary equipment.。
In the method, auxiliary equipment will be through the encapsulated information long-distance transmissions to the central machine room main equipment by the far-end main equipment.Wherein, comprise the auxiliary equipment message identification, and comprise at least one or their combination in device type, access address, the auxiliary equipment information payload through the content of encapsulated information.According to the auxiliary equipment message identification through encapsulated information, the central machine room main equipment will separate through encapsulated information.The content of the information of process decapsulation comprises one of access address and auxiliary equipment information payload or their combination.Standard agreement comprises standard serial communication protocol and TCP.
In addition, in the method, the far-end main equipment is base station transceiver or base-station node, and the central machine room main equipment is base station controller or radio network controller.
According to another aspect of the invention, provide a kind of device that is used between the maintenance terminal of auxiliary equipment and auxiliary equipment, carrying out information interaction.
This device comprises central machine room equipment and far-end main equipment.
Wherein, central machine room equipment comprises the auxiliary equipment maintenance terminal transmission/reception information module that is used for by information interface and operation maintenance center's server transmission/reception information module interactive information, be used for operation maintenance center's server transmission/reception information module with operation maintenance center's server encapsulation/decapsulation information module interactive information, be used for will with operation maintenance center's server encapsulation/decapsulation information module of the mutual information encapsulation/decapsulation sign of operation maintenance center server transmission/reception information module, and being used for central machine room controller transmission/reception information module with the first far-end main equipment transmission/reception information module interactive information, this module is connected to operation maintenance center's server encapsulation/decapsulation information module.
In addition, the far-end main equipment comprises the first far-end main equipment transmission/reception information module that is used for central machine room controller transmission/reception information module interactive information, be used for will with the far-end main equipment encapsulation/decapsulation information module of the mutual information encapsulation/decapsulation of first far-end main equipment transmission/reception information interaction module sign, be used for the second far-end main equipment transmission/reception information module with far-end main equipment encapsulation/decapsulation information module interactive information, and be used for the auxiliary equipment transmission/reception information module with the second far-end main equipment transmission/reception information module interactive information.
By above-mentioned aspect of the present invention, auxiliary equipment does not need to take the dedicated transmissions bandwidth, auxiliary equipment does not need to be concerned about the complicated and diversified host-host protocol of main equipment yet, just can be by the method for transparent transmission auxiliary equipment information in the mobile communcations system, direction according to the information transmission, information is sent to auxiliary equipment from the maintenance terminal of auxiliary equipment, and the maintenance terminal that information is sent to auxiliary equipment from auxiliary equipment.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the flow chart of the maintenance terminal from auxiliary equipment according to the present invention to the auxiliary equipment method for transmitting information;
Fig. 2 is from the flow chart of auxiliary equipment to the maintenance terminal method for transmitting information of auxiliary equipment according to of the present invention;
Fig. 3 is according to mobile communication main equipment transparent transmission auxiliary equipment structure of information system schematic diagram of the present invention; And
Fig. 4 is the flow chart according to mobile communication main equipment transparent transmission auxiliary equipment data method of the present invention;
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
In the present embodiment, provide a kind of and be used for maintenance terminal from auxiliary equipment to the auxiliary equipment method of transmitting information.
Fig. 1 be according to the inventive method from the maintenance terminal of auxiliary equipment flow chart to auxiliary equipment transmission information.
As shown in Figure 1, the maintenance terminal from auxiliary equipment according to present embodiment may further comprise the steps to the auxiliary equipment method of transmitting information: step S102, maintenance terminal and operation maintenance center's server establish a communications link by interface, and information is sent to operation maintenance center's server; Step S104, operation maintenance center's server be the information package identification, and will be through the encapsulated information long-distance transmissions to the far-end main equipment; And step S106, by using standard agreement, the far-end main equipment will and send to auxiliary equipment through the encapsulated information decapsulation.
In another embodiment, providing a kind of is used for from the maintenance terminal method of transmitting information of auxiliary equipment to auxiliary equipment.
Fig. 2 be according to the inventive method from the flow chart of auxiliary equipment to the maintenance terminal of auxiliary equipment transmission information.
As shown in Figure 2, according to may further comprise the steps of present embodiment: step S202 from the maintenance terminal method of transmitting information of auxiliary equipment to auxiliary equipment, auxiliary equipment establishes a communications link with identical standard agreement with the far-end main equipment, and auxiliary equipment sends to the far-end main equipment with information; Step S204, far-end main equipment be the information package identification, and by using standard agreement, will arrive the central machine room main equipment through the encapsulated information long-distance transmissions; Step S206, according to process encapsulated information content, the central machine room main equipment will separate through encapsulated information, and download to operation maintenance center's server; And step S208, operation maintenance center's server will be through the information decapsulation that separates, and sends to the maintenance terminal of corresponding auxiliary equipment.
In the present embodiment, provide a kind of device that is used between the maintenance terminal of auxiliary equipment and auxiliary equipment, carrying out information interaction.
As shown in Figure 3, according to auxiliary equipment information transparency transmission system of the present invention, it comprises central machine room 100 and far-end main equipment 200.
Auxiliary equipment maintenance terminal transmission/reception information module 102 is used for the auxiliary equipment maintenance terminal and send information to OMC (operation center's server) service, or receives information from the OMC server.In this part, the auxiliary equipment maintenance terminal need with simple information interface of OMC server negotiate, be used for the destination address that correct understanding information will be sent to, or the device address inserted of information.
OMC server transmission/reception information module 104 is used for the OMC server and receives the information that the auxiliary equipment maintenance terminal sends, or the information that auxiliary equipment is uploaded is sent to the auxiliary equipment maintenance terminal.Identical with auxiliary equipment maintenance terminal transmission/reception information module 102, the OMC server need be consulted a simple information interface with the auxiliary equipment maintenance terminal.
OMC server encapsulation/decapsulation information module 106, because auxiliary equipment information transmits by the mode of main equipment fully, for making from the information that main equipment transmits, separating that auxiliary equipment information can be correct, need be to simple frame head sign of auxiliary equipment information encapsulation.
Central machine room controller transmission/reception information module 108 is used for sending reception remote equipment information, and auxiliary equipment information and main equipment information are handled by identical mode, do not need to increase in addition transmission equipment.
Far-end main equipment 200 comprises following 4 parts:
Far-end main equipment transmission/reception information module 208 is used for transmission/receiving center machine room main equipment information, and auxiliary equipment information and main equipment information are handled by identical mode, do not need to increase in addition transmission equipment.
Far-end main equipment encapsulation/decapsulation information module 206, similar to OMC server encapsulation/decapsulation information module 106, because auxiliary equipment information transmits by the mode of main equipment fully, for making from the information that main equipment transmits, separating that auxiliary equipment information can be correct, need be to simple frame head sign of auxiliary equipment information encapsulation.
Far-end main equipment transmission/reception information module 204 receives the information that auxiliary equipment sends, or the information delivery auxiliary equipment that the auxiliary equipment maintenance terminal is sent.
Far-end auxiliary equipment transmission/reception information module 202, auxiliary equipment sends to main equipment with information, or receives information from main equipment.
According to the preferred embodiment of the present invention, as shown in Figure 4, mobile communication main equipment transparent transmission auxiliary equipment data method according to the present invention may further comprise the steps:
Step S1002, the maintenance terminal of auxiliary equipment sends to the OMC server with operational order or data.The auxiliary equipment maintenance terminal need with simple interface of OMC server negotiate, mainly comprise the destination address that data type, data will be sent to.
Data-interface comprises device type, destination address, and payload user data, and data format definition is:
| Device type | Destination address | The auxiliary equipment payload user data |
Step S1004, the OMC server is designated the auxiliary data type with auxiliary equipment data encapsulation frame head.
The data frame head increases the auxiliary equipment Data Identification, is used for the remote equipment mask data, and the data format definition of transmission is:
| The auxiliary equipment Data Identification | Device type | Destination address | The auxiliary equipment payload user data |
Step S1006, OMC server with the auxiliary equipment data upload to the BSC/RNC that is installed in central machine room.
Step S1008, transfer of data is used and the identical host-host protocol of main equipment data, transmission route, the data of auxiliary equipment is sent to the BTS/NodeB of remote dispersion installation from the BSC/RNC that is installed in central machine room.
More than the existing transmission network of main equipment that all is to use of two step S1006 and S1008, do not need extra process.
Step S1010, data head is removed in the decapsulation of auxiliary equipment data frame head, is reduced to the auxiliary equipment payload user data.
Data send to before the auxiliary equipment, remove frame head device type, the destination address of encapsulation, reduction auxiliary equipment payload user data, and data format definition is:
Step S1012, main equipment sends to auxiliary equipment with data, and transfer of data is used standard agreement between main equipment and the auxiliary equipment, comprises standard serial communications protocol RS-232/RS-485, TCP TCP/IP.
Data are comprised with the lower part from the maintenance terminal that auxiliary equipment sends to auxiliary equipment:
Step S1014, data insert part, and transfer of data is used standard agreement between auxiliary equipment and the main equipment, comprises standard serial communications protocol RS-232/RS-485, TCP TCP/IP.
Step S1016, the encapsulation of auxiliary equipment data frame head in order to be different from the business datum of main equipment, need be carried out simple data frame head encapsulation to the auxiliary equipment data, comprises device type, access address.
The data frame head increases the auxiliary equipment Data Identification, is used for the remote equipment mask data; Increase device type, access address simultaneously, the data format definition of transmission is:
| The auxiliary equipment Data Identification | Device type | Access address | The auxiliary equipment payload user data |
[0063]Step S1018, transfer of data is used and the identical host-host protocol of main equipment data, transmission route, and the BTS/NodeB that the data of auxiliary equipment are installed from remote dispersion is sent to the BSC/RNC that is installed in central machine room.
Step S1020, the auxiliary equipment data separating, the BSC/RNC of central machine room isolates the data of auxiliary equipment according to the auxiliary equipment Data Identification, and data download to the OMC server.
Step S1022, the OMC server is with the decapsulation of auxiliary equipment data.
Decapsulation need be removed auxiliary equipment Data Identification, the device type in the frame head, and the data format after the reduction is:
| Access address | The auxiliary equipment payload user data |
Step S1024, the OMC server sends to corresponding auxiliary equipment maintenance terminal with the auxiliary equipment data.
Below the several fields in the frame head data form are explained:
The auxiliary equipment Data Identification: add sign before the transfer of data, transfer of data is isolated the auxiliary equipment data according to this sign from the data that main equipment transmits behind far-end.
Device type: owing to exist polytype auxiliary equipment, every type auxiliary equipment that oneself independently maintenance terminal is arranged, the OMC server uses this field that data are sent to corresponding auxiliary equipment maintenance terminal.
Destination address/access address: generally speaking, a base station controller/radio network controller is being controlled a plurality of base station transceiver/base-station nodes, and a plurality of base station transceiver/base-station nodes are distributed to each region, and the addressing structure of oneself is arranged.Auxiliary equipment does not have the distributed addressing structure of oneself, but depends on the main equipment addressing.Destination address/access address is exactly sign telepoint base station transceiver/base-station node that auxiliary equipment depended on.
Data are sent to the maintenance terminal of auxiliary equipment from auxiliary equipment, with data are opposite from the step that the maintenance terminal of auxiliary equipment sends to auxiliary equipment.The data of auxiliary equipment insert from the far-end main equipment earlier, in the encapsulation of far-end main equipment, are sent to central machine room then at a distance, download to the OMC server again, are distributed to the maintenance terminal of auxiliary equipment by the OMC server.
As from the foregoing, main equipment and auxiliary equipment only need be consulted a simple data encapsulation interface, just can utilize the data of the two-way transmission auxiliary equipment of the existing transfer of data route of main equipment.Auxiliary equipment can be used the maintenance terminal of oneself, and need not to increase any transmission equipment, just can control the auxiliary equipment of far-end, or receives the data that the far-end auxiliary equipment reports.Auxiliary equipment does not need to understand host-host protocol any between the main equipment, and this point provides favorable applicability for auxiliary equipment inserts main equipment.Because in the transfer of data link, the data of auxiliary equipment data and main equipment are in full accord, so do not need to take fixing time slot or take fixing bandwidth; In the time that auxiliary equipment does not transmit data, occupied bandwidth not fully.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. a data transmission method is used for transmitting data from the maintenance terminal of auxiliary equipment to described auxiliary equipment, it is characterized in that, comprising:
Described maintenance terminal and operation maintenance center's server establish a communications link by interface, and information is sent to described operation maintenance center server;
Described operation maintenance center server is with described information package identification, and the use host-host protocol identical with the main equipment data will be through the encapsulated information long-distance transmissions to the far-end main equipment; And
By using described identical host-host protocol, described far-end main equipment is with the encapsulated information decapsulation of described process and send to described auxiliary equipment.
2. data transmission method according to claim 1 is characterized in that, described will comprising to the far-end main equipment through the encapsulated information long-distance transmissions:
Described operation maintenance center server uploads on the central machine room main equipment through encapsulated information described; And
Described central machine room main equipment is transferred to described far-end main equipment with described through encapsulated information.
3. data transmission method according to claim 1 and 2 is characterized in that, the content of described information comprises at least one or their combination in device type, destination address, the auxiliary equipment payload user data.
4. data transmission method according to claim 1 and 2, it is characterized in that, described content through encapsulated information comprises the auxiliary equipment Data Identification, and comprises at least one or their combination in device type, destination address, the auxiliary equipment payload user data.
5. data transmission method according to claim 1 and 2 is characterized in that, the content of the information of described process decapsulation comprises the auxiliary equipment payload user data.
6. data transmission method according to claim 1 and 2 is characterized in that described standard agreement comprises standard serial communication protocol and TCP.
7. data transmission method according to claim 2 is characterized in that, described far-end main equipment is base station transceiver or base-station node, and described central machine room main equipment is base station controller or radio network controller.
8. a data transmission method is used for it is characterized in that from the maintenance terminal transmission data of auxiliary equipment to described auxiliary equipment, comprising:
Described auxiliary equipment establishes a communications link with identical standard agreement with the far-end main equipment, and described auxiliary equipment sends to described far-end main equipment with information;
Described far-end main equipment is described information package identification, and by using described standard agreement, will arrive the central machine room main equipment through the encapsulated information long-distance transmissions;
Through the encapsulated information content, described central machine room main equipment separates through encapsulated information described, and downloads to operation maintenance center's server according to described; And
Described operation maintenance center server will be through the information decapsulation that separates, and sends to the maintenance terminal of corresponding described auxiliary equipment.
9. data transmission method according to claim 8 is characterized in that, described auxiliary equipment arrives central machine room main equipment with described through the encapsulated information long-distance transmissions by the far-end main equipment.
10. according to Claim 8 or 9 described data transmission methods, it is characterized in that, described content through encapsulated information comprises the auxiliary equipment Data Identification, and comprises at least one or their combination in device type, access address, the auxiliary equipment payload user data.
11. data transmission method according to claim 10 is characterized in that, according to described described auxiliary equipment Data Identification through encapsulated information, described central machine room main equipment separates through encapsulated information described.
12. according to Claim 8 or 9 described data transmission methods, it is characterized in that, comprise one of access address and auxiliary equipment payload user data or their combination through the content of the information of decapsulation.
13. according to Claim 8 or 9 described data transmission methods, it is characterized in that described standard agreement comprises standard serial communication protocol and TCP.
14. according to Claim 8 or 9 described data transmission methods, it is characterized in that described far-end main equipment is base station transceiver or base-station node, and described central machine room main equipment is base station controller or radio network controller.
15. a data interaction device is used for carrying out data interaction between the maintenance terminal of auxiliary equipment and described auxiliary equipment, it is characterized in that, comprising: central machine room equipment and far-end main equipment, wherein,
Described central machine room equipment comprises:
Auxiliary equipment maintenance terminal transmission/reception information module is used for by information interface and operation maintenance center's server transmission/reception information module interactive information;
Described operation maintenance center server transmission/reception information module is used for the server encapsulation/decapsulation information module interactive information with operation maintenance center;
Described operation maintenance center server encapsulation/decapsulation information module, be used for with the mutual information encapsulation/decapsulation sign of described operation maintenance center server transmission/reception information module; And
Central machine room controller transmission/reception information module is connected to described operation maintenance center server encapsulation/decapsulation information module, is used to use the host-host protocol identical with the main equipment data and the first far-end main equipment transmission/reception information module interactive information; And described far-end main equipment, comprising:
The described first far-end main equipment transmission/reception information module is used to use described host-host protocol and central machine room controller transmission/reception information module interactive information;
Far-end main equipment encapsulation/decapsulation information module, be used for with the mutual information encapsulation/decapsulation of described first far-end main equipment transmission/reception information module sign;
The second far-end main equipment transmission/reception information module is used for and described far-end main equipment encapsulation/decapsulation information module interactive information; And
Far-end auxiliary equipment transmission/reception information module is used for and the described second far-end main equipment transmission/reception information module interactive information.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101017334A CN101192901B (en) | 2007-04-24 | 2007-04-24 | Information interaction device and method for auxiliary device and auxiliary device maintenance terminal |
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| CN2007101017334A CN101192901B (en) | 2007-04-24 | 2007-04-24 | Information interaction device and method for auxiliary device and auxiliary device maintenance terminal |
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| CN101192901A CN101192901A (en) | 2008-06-04 |
| CN101192901B true CN101192901B (en) | 2011-03-16 |
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| CN2007101017334A Active CN101192901B (en) | 2007-04-24 | 2007-04-24 | Information interaction device and method for auxiliary device and auxiliary device maintenance terminal |
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| CN102202332B (en) * | 2011-06-09 | 2013-11-20 | 中国普天信息产业股份有限公司 | Base station maintenance system |
| CN102932208A (en) * | 2012-11-20 | 2013-02-13 | 华为技术有限公司 | Site monitoring method and device |
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| WO2001045335A1 (en) * | 1999-12-02 | 2001-06-21 | Nokia Corporation | Call routing in a telecommunication system |
| CN1645832A (en) * | 2005-03-18 | 2005-07-27 | 北京北方烽火科技有限公司 | Method for building special operational maintaining channel in WCDMA system |
| CN1780417A (en) * | 2004-11-18 | 2006-05-31 | 中兴通讯股份有限公司 | Method for realizing grouped telecommunication system and calling in intelligent network service |
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- 2007-04-24 CN CN2007101017334A patent/CN101192901B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001045335A1 (en) * | 1999-12-02 | 2001-06-21 | Nokia Corporation | Call routing in a telecommunication system |
| CN1780417A (en) * | 2004-11-18 | 2006-05-31 | 中兴通讯股份有限公司 | Method for realizing grouped telecommunication system and calling in intelligent network service |
| CN1645832A (en) * | 2005-03-18 | 2005-07-27 | 北京北方烽火科技有限公司 | Method for building special operational maintaining channel in WCDMA system |
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