CN101026876A - Method and device for realizing communication under base station controller multi-homing - Google Patents

Abstract

The invention is in use for making BSC select MSC smartly, and making BSC connect appointed affiliated MSC. After receiving message of request sent from mobile device, the base station controller BSC obtains first information from the message of request. Based on the first information, the method determines MSC for receiving the message of request from MSCs belonging to BSC. BSC sends the message of request to corresponding MSC. The BSC includes receiving unit, processing unit, recording unit, and transmitting unit.

Description

A kind of method for communicating and device under base station controller multi-homing, realized

Technical field

The present invention relates to the computer and the communications field, particularly under the many ownership of base station controller (BSC), realize method for communicating and device.

Background technology

In existing C DMA2000 network was formed, networking mode was star-like, that is to say, a BSC can only meet a MSC, and a MSC can meet a plurality of BSC, and a plurality of MSC meet an attaching position register (Home Location Register, HLR), referring to shown in Figure 1.

Mobile device in the prior art (MS) is initiated beginning z z z the flow process of crying referring to shown in Figure 2, and step is as follows:

(BS) initiates business request information to BSC to step 201:MS through the base station, carry international mobile subscriber identity (the International Mobile Subscriber Identity of MS in the request message, IMSI), Electronic Serial Number (Electronic Serial Number, ESN), information such as called number and sub-district, district, MS position.

Step 202:BSC returns correct response command.

Step 203:BSC initiates business request information to MSC, wherein carries IMSI, ESN, called number and location area cell information.

Step 204:MSC carries the transport layer hyphen to BSC request assignment air traffic channel.

Step 205:BSC is undertaken alternately by BS and MS, gives the MS allocated channel.

Step 206:BSC finishes to the assignment of MSC feedback air traffic channel in allocated channel success back.

Step 207:MSC sends ring-back tone to MS.

The MSC memory space is increasing at present, and when a MSC broke down or transships, all BSC of following extension are with ineffective, and were very big to the influence of network.Share memory space on the MSC for equilibrium, those skilled in the art need realize that the calling equilibrium under each BSC is assigned on its different MSC that belongs to, and in the O﹠M process, needs to realize certain calling is connected to appointed MSC.

Summary of the invention

Embodiments of the invention provide a kind of method for communicating and device realized under base station controller multi-homing, be used for belonging at BSC realizing under the situation that BSC selects MSC to communicate more.

A kind ofly under base station controller multi-homing, realize method for communicating, may further comprise the steps:

Base station controller BSC is obtained the first information according to this request message behind the request message that receives the mobile device transmission, and determines to receive the MSC of request message from the MSC of described BSC ownership according to the described first information;

Described BSC sends to corresponding M SC with request message.

A kind of base station controller comprises:

Receiving element is used to receive the request message that mobile device sends;

Processing unit is used for obtaining the first information according to described request message, and determines to receive the MSC of request message from the MSC of this base station controller ownership according to the described first information;

Transmitting element is used for request message is sent to corresponding M SC.

A kind of communication system comprises:

Mobile device is used for sending a request message to base station controller;

Base station controller BSC is used for obtaining the first information according to described request message, and determines to receive in the moving exchanging center MSC of this BSC ownership the MSC of request message according to the described first information, and request message is sent to corresponding M SC;

Moving exchanging center MSC is used to receive the solicited message that described BSC sends.

BSC obtains relevant information according to the request message that receives in the embodiments of the invention, and according to the definite MSC that should connect of relevant information.Relevant information different and with the different modes that multiple choices MSC is arranged of the corresponding relation of MSC, be implemented under the multiple choices situation, BSC selects the different MSC of its ownership.

Description of drawings

Fig. 1 is the network structure of CDMA2000 in the prior art;

Fig. 2 is z z z the flow chart that cries of beginning in the prior art;

Fig. 3 A is network architecture figure in the embodiment of the invention;

Fig. 3 B is the annexation figure of BSC and MSC in the embodiment of the invention;

Fig. 4 is the structure chart of BSC in the embodiment of the invention;

Fig. 5 is z z z the flow chart that cries of beginning in the embodiment of the invention.

Embodiment

In order to realize that BSC selects the different MSC of its ownership, and BSC is connected on the MSC of its ownership of appointment, in the present embodiment BSC according to the corresponding relation of information such as default caller IMSI information, called number with MSC, definite MSC that should connect.

The O﹠M scenarios that present embodiment is primarily aimed under the CDMA2000 system describes, and also can use present embodiment in non-O﹠M scenarios.Simultaneously, present embodiment is applicable to communication services such as calling, note, is that example describes with beginning z z z the business of crying below.

The corresponding relation of the IMSI information of caller MS and MSC is as shown in table 1 in the present embodiment:

Table 1

The IMSI section	MSCID1	?MSCID2	...	?MSCIDn
					?46003090000xxxx	MSC1	?MSC2	...	?MSCn
?46003090001xxxx	MSC2	?MSC3	...	?MSC1
					?......	.....

Wherein, IMSI information is special section or the special number that is used to test, and number Duan Ke represents a sets of numbers, as 138 or 1382345 in the phone number 13823455432.N among MSCIDn and the MSCn represents the number of the MSC of BSC ownership, and the number of the MSC of different BSC ownership can be different.The sign (ID) of first MSC of IMSI section 46003090000xxxx correspondence is MSC1, MSCID1 represents first MSC logical identifier, be that 46003090000xxxx is connected to the MSC1 under the MSCID1 when making a call for the first time, be connected to the MSC2 under the MSCID2 when calling out for the second time, by that analogy.Comprise the data in tabulation of IMSI section and the MSC tabulation in this table.The example that tabulation of IMSI section and MSC tabulate is as follows:

Table 2, IMSI section tabulation table 3, MSC tabulation

Also can comprise less information in the table 1, ginseng is shown in Table 4:

Table 4

The IMSI section	MSCID
		?46003090000xxxx	MSC1
?46003090001xxxx	MSC2
		?......	.....

Be connected to MSC1 according to table 4 when No. 46003090000 section makes a call for the first time, in table 3, find the follow-up MSC2 of MSC1 according to the MSC1 in the table 4 when making a call for the second time, and be connected to MSC2.

Perhaps make a call, change caller IMSI information by different MS; BSC then is connected to the MSC of different identification according to table 4.

The corresponding relation of called number or number section and MSC is as shown in table 5 in the present embodiment:

Table 5

The IMSI section	MSCID1	?MSCID2	...	?MSCIDn
					?3331111xxxx	MSC1	?MSC2	...	?MSCn
?3332222xxxx	MSC2	?MSC3	...	?MSC1
					?......	.....

Wherein number section of called number also is the special section that is used to test, condition code or the particular phone number do not planned as some existing networks.When number section that the called number in the call request message belongs to that table 5 provides, expression is connected to the MSC of different identification just at test network this moment by the repeating query mode in repeatedly calling out.Perhaps table 5 is simplified according to table 4, by calling out the MSC that different called numbers is connected to different identification, reaches the purpose of test.Special number can be virtual-number, after MSC receives this type of special number, can the conversion called number, and be transformed into the called number of a reality of appointment, continue replay call; Perhaps just play special prompt tone to the calling subscriber, expression is communicated with.

Present embodiment also provides the many ownership of a kind of BSC of realization to select the method for MSC down at called number.Be defined as follows form: ^*The NN+XX+ called number.When the calling subscriber imported such character combination, BSC can discern the implication of each character.Wherein ^*NN (also can not be with * number, generally be used for special business * number, separate with common called number easily) be convention, BSC find called number start be such numeral after, promptly think and will carry out the selection of MSC.XX represents the numbering of MSC, i.e. content in first of table 3 row, and BSC needs to determine the MSC that should connect according to numbering question blank 3; Perhaps XX represents the sign of MSC, i.e. content in the secondary series of table 3.Called number is calling and wants connected number.By this dial mode, can clearly specify the MSC that will continue, more flexible than repeating query mode, be easier to test.

The corresponding relation of sub-district, district, caller MS position and MSC is as shown in table 6 in the present embodiment:

Table 6

Location area cell	MSCID1	?MSCID2	...	?MSCIDn
					460030907554201	MSC1	?MSC2	...	?MSCn
460030907551201	MSC2	?MSC3	...	?MSC1
					......	.....

Location area cell field in the table 6 can also be configured to lane place (as 46003090755), a perhaps filling-in position district sign indicating number (Location Area Code, LAC) field (as 0755), perhaps only fill in cell ID (Cell Identification, CI) field (as 4201), or their complete coding.

When MS initiated repeatedly to call out in the fixed location in the present embodiment, BSC was repeatedly calling out the MSC that is connected to different identification in the connection according to the mode of repeating query according to same location area cell information.Perhaps table 6 is simplified with the mode of table 4, MS initiates in the different location repeatedly to call out, and BSC is repeatedly calling out the MSC that is connected to different identification in the connection according to diverse location district cell information.

The corresponding relation of the ESN of caller MS and MSC is as shown in table 7 in the present embodiment, and the method for selecting MSC does not repeat them here with the method according to caller IMSI Information Selection MSC.

Table 7

?ESN

?MSCID1

?MSCID2

...

?MSCIDn

?1E771363	?MSC1	?MSC2	...	?MSCn
					?253C683A	?MSC2	?MSC3	...	?MSC1
?......	?.....

In addition, table 7 can be simplified to the mode of table 4.

Above-mentioned in the present embodiment corresponding relation can mix use, for example, BSC obtains caller IMSI information from the call request message that the MS that receives sends, compare according to caller IMSI information inquiry table 1 and with each IMSI section, in comparison result when failure, continue according to the called number question blank 5 in the call request message, continues called number and each IMSI section compared and inquire about MSC; If the comparison failure can also continue question blank 6 or table 7.Can the information of comparison or the corresponding relation of inquiry specifically be set according to actual conditions.

IMSI number, called number and the ESN that present embodiment also provides caller MS respectively with the indirect corresponding relation of MSC.That is, use Hash (HASH) algorithm, 1000 computings obtain number in one 0 to 999 through mould with the IMSI number, according to 0 to 999 with the definite MSC that is connected of the corresponding relation of MSC.The example of a corresponding relation is as shown in table 8:

Table 8

The IMSI section	MSCID
		100 to 199 (1xx)	MSC1
200 to 299 (2xx)	MSC2
		?......	.....

The method of the indirect corresponding method of ESN and MSC and IMSI is identical in the present embodiment, does not repeat them here.And hash algorithm is not unique in the present embodiment.

Referring to Fig. 3 A, network configuration comprises MSC, BSC and MS in the present embodiment.

MS is to make a call service request and receive response message of BSC; Carry out data interaction with BSC then, obtain the air traffic channel of BSC assignment; The ring-back tone that reception is sent by MSC.

The call business request that BSC receives and response MS initiates; According to the number of calls or the MSC sign of certain information of carrying in the request and this information correspondence, inquire about the corresponding relation of the MSC of this information and this BSC ownership, and determine the MSC that this calling should connect.In the process of determining the MSC that this calling should connect, if, can adopt another kind of information for the second time or inquire about second corresponding relation and determine MSC for the first time according to a kind of information and first corresponding relation inquiry MSC failure.Then, BSC is to the MSC forwarded call service request of determining, and be MS assignment air traffic channel, and feeds back air traffic channel information to the MSC that determines.

MSC receives the business request information that BSC initiates, and to BSC request assignment air traffic channel; After the air traffic channel of receiving the BSC feedback, send ring-back tone to MS.

A plurality of MSC are divided into a plurality of Chi Qu (Pool-area), shown in Fig. 3 B, in each pond district one or more MSC are arranged, can there be the intersection region in adjacent two ponds district.The direct or indirect counterpart of all MSC in each pond district or whole information such as IMSI section, ESN and/or location area cell.The MSC correspondence is special information such as IMSI section, ESN and location area cell in O﹠M scenarios.

Referring to Fig. 4, BSC comprises receiving element 401, processing unit 402, record cell 403 and transmitting element 404 in the present embodiment.

Receiving element 401 receives the call request of MS initiation and the various message that MS sends when carrying out data interaction with MS; Receive the message of the request assignment air traffic channel of MSC transmission.

Processing unit 402 generates the message of response request, and (information comprises caller IMSI information, called number or number section, ESN and location area cell according to the one or more information in the request.) determine the MSC that this calling should connect; The corresponding relation of each information and MSC referring to table 1 to shown in the table 8.In the process of determining the MSC that this calling should connect, if, can adopt another kind of information for the second time or inquire about second corresponding relation and determine MSC for the first time according to a kind of information and first corresponding relation inquiry MSC failure.Processing unit 402 further is a MS assignment air traffic channel, and feeds back the air traffic channel of assignment to MSC.System description, thus relatively summarize, if think that to need refinement also passable.

Record cell 403 upgrades the number of calls of each information correspondence or the sign of MSC according to the indication of processing unit 402.

Transmitting element 404 sends correct response message to MS, to MSC forwarded call service request; When carrying out data interaction, send various message then to MS with MS; Feed back the air traffic channel of assignment to MSC.

Present embodiment with the beginning z z z to be the caller IMSI information in the request message be that example describes.

Referring to Fig. 5, it is as follows that BSC selects the method flow of MSC in the present embodiment:

Step 501:MS to BSC initiate the beginning z z z cry request, carry the information such as IMSI number, ESN and called number of caller MS in the request, perhaps go out the location area cell at MS place according to this requirement analysis.

The calling of step 502:BSC response MS issues correct response command.

The caller IMSI information of carrying MS in the call request of step 503:BSC according to MS adds 1 with the number of calls corresponding with caller IMSI information of local record, inquire about the number of calls behind the local update then, determine the MSC that needs are connected to according to the number of calls after upgrading.Also can first query call number of times, judge after the number of calls added 1, again the metered call number of times.Caller IMSI information comprises caller IMSI number and caller IMSI section.

For example: obtaining caller IMSI number from request is 46003090000xxxx, number section is 46003090000, according to this number section question blank 1, find to mate fully with first IMSI section, the sign of first MSC of first IMSI section correspondence is MSC1, according to the record of this locality, this time is to call out for the second time, the sign of searching the MSC under the MSCID2 so is MSC2, then when this is called out MS is connected to MSC2.

Perhaps, the caller IMSI number that carries MS in the call request of BSC according to MS adds 1 with the MSC logical identifier corresponding with caller IMSI number of local record, then each the IMSI section among the IMSI Duan Yubiao 1 in the caller IMSI number is compared, definite institute is expert at, determine column according to the MSC logical identifier after upgrading again, obtain the sign of the MSC that should be connected then according to the be expert at and the intersection point of column.

If BSC during according to caller IMSI information inquiry table 1, does not inquire this number section or number, represent that this calling is normal call, rather than the calling that is used to test, multiple solution is arranged this moment:

As a kind of scheme is that BSC continues to inquire about accordingly and the corresponding relation of MSC repeating step 503 according to the out of Memory in the call request message.

As another kind of scheme is that BSC can comprise IMSI number or number section of whole MS according to number 46003090000xxxx or number section 46003090000 inquiries table identical with table 1 structure in this table, and repeating step 503 inquires continuation step 505 behind the MSC.

As another scheme is to continue step 504.

If when BSC also determines the MSC of needs connection according to caller IMSI information inquiry table 1, continue step 505.

The IMSI number that step 504:BSC will obtain from request carries out Hash operation, be about to the IMSI number and carry out the computing of mould 1000, with number 460030900001234 is example, the result of mould 1000 is 234, belongs to 200 to 299 scope, represents with 2xx, search the corresponding relation of caller IMSI information and MSCID, be question blank 8, determine that then this should be connected to MSC2, continues step 505.

Step 505:BSC wherein carries caller IMSI information, ESN, called number and location area cell information to the MSC that the determines business request information that makes a call.

Step 506:MSC carries the transport layer hyphen to BSC request assignment air traffic channel.

Step 507:BSC is undertaken alternately by BS and MS, and gives the MS allocated channel.

Step 508:BSC finishes to the assignment of MSC feedback air traffic channel in allocated channel success back.

Step 509:MSC sends ring-back tone to MS.

The present invention makes BSC can select MSC more flexibly for the method that BSC provides multiple choices MSC.Simultaneously, the present invention repeatedly is being connected on the MSC of different identification in the calling procedure successively according to the corresponding relation of information and MSC, realizes the connection inspection from a BSC to all paths each MSC, for the O﹠M of system is provided convenience.Simultaneously, the present invention is applicable to communication systems such as CDMA2000, WCDMA.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (15)

1, a kind ofly under base station controller multi-homing, realize method for communicating, it is characterized in that, may further comprise the steps:

Base station controller BSC is obtained the first information according to this request message behind the request message that receives the mobile device transmission, and determines to receive the MSC of request message from the MSC of described BSC ownership according to the described first information;

Described BSC sends to corresponding M SC with request message.

2, the method for claim 1, it is characterized in that, determine that according to the described first information MSC that receives request message is from the MSC of described BSC ownership: described BSC inquires about first corresponding relation according to the described first information, and the MSC that inquires is defined as receiving the MSC of request message, wherein, this first corresponding relation is the corresponding relation of the sign ID of the first information and this BSC ownership MSC.

3, method as claimed in claim 2 is characterized in that, the sign of a plurality of MSC of every corresponding described BSC ownership of the first information in described first corresponding relation; Then, described BSC inquires about first corresponding relation according to the described first information and determines that the MSC that receives request message is: described BSC determines a MSC by the repeating query mode after inquiring a plurality of MSC from described a plurality of MSC.

4, method as claimed in claim 3 is characterized in that, described BSC is accumulative total request number of times or record MSC sign when determining MSC, and the MSC sign order from described a plurality of MSC according to described request number of times or record is determined MSC when determining MSC next time.

5, method as claimed in claim 2 is characterized in that, the sign of a MSC in described first corresponding relation among a plurality of MSC of every corresponding described BSC ownership of the first information, and the sign of the MSC of the corresponding different identification of the different first information.

6, as each described method in the claim 2 to 5, it is characterized in that the corresponding relation of International Mobile Station Equipment Identification sign indicating number IMSI information that described first corresponding relation is a mobile device and MSC sign; The described first information is a caller IMSI information, perhaps is called number or number section; Perhaps

Described first corresponding relation is meant the corresponding relation of the Electronic Serial Number information and the MSC sign of mobile device; The described first information is an Electronic Serial Number; Perhaps

Described first corresponding relation is meant the corresponding relation that location area cell information and the MSC under the described mobile device identifies; The described first information is a location area cell information.

7, as each described method in the claim 2 to 5, it is characterized in that,, further inquire about second corresponding relation, determine to receive the MSC of request message according to the described first information when when inquiring about described first corresponding relation and do not inquire corresponding MSC; Wherein, this second corresponding relation is the corresponding relation of the sign of a MSC among a plurality of MSC of the first information and described BSC ownership, and the sign of the MSC of the corresponding different identification of the different first information; Perhaps

Further obtain second information, and, determine to receive the MSC of request message according to this second information inquiry, second corresponding relation according to described request message; Wherein, this second corresponding relation is the corresponding relation of the sign of a MSC among a plurality of MSC of second information and described BSC ownership, and the sign of the MSC of the corresponding different identification of different second information.

8, method as claimed in claim 7 is characterized in that, one of number section, Electronic Serial Number and location area cell of the caller IMSI information that described second information is mobile device, called number, called number.

9, method as claimed in claim 7, it is characterized in that, the described first information is the mobile device identification information, described second corresponding relation is after application Hash HASH algorithm is divided into a plurality of intervals with the mobile device identification information, the corresponding relation of the sign of a MSC among a plurality of MSC of each interval and described BSC ownership, wherein, the sign of the MSC of different interval corresponding different identifications;

Described BSC is by carrying out the HASH computing to the described first information, and according to judging that the interval under the operation result determines corresponding MSC.

10, method as claimed in claim 9 is characterized in that, described mobile device identification information is meant one of caller IMSI number, called number and Electronic Serial Number of mobile device.

11, the method for claim 1 is characterized in that, the described first information comprises numbering and the called number of the MSC of described BSC ownership; Described BSC determines to receive the MSC of request message according to described numbering.

12, method as claimed in claim 11 is characterized in that, the described MSC sign that is numbered; Described BSC directly sends a request message to the MSC corresponding to described numbering.

13, method as claimed in claim 11 is characterized in that, describedly is numbered a kind of digital coding; Described BSC inquires about the MSC that the 3rd corresponding relation determines to receive request message according to described digital coding, wherein, the 3rd corresponding relation is the corresponding relation of the sign of a MSC among a plurality of MSC of described digital coding and described BSC ownership, and the sign of the MSC of the corresponding different identification of different digital codings.

14, a kind of base station controller is characterized in that, comprising:

Receiving element is used to receive the request message that mobile device sends;

Processing unit is used for obtaining the first information according to described request message, and determines to receive the MSC of request message from the MSC of this base station controller ownership according to the described first information;

Transmitting element is used for request message is sent to corresponding M SC.

15, a kind of communication system is characterized in that, comprising:

Mobile device is used for sending a request message to base station controller;

Base station controller BSC is used for obtaining the first information according to described request message, and determines to receive in the moving exchanging center MSC of this BSC ownership the MSC of request message according to the described first information, and request message is sent to corresponding M SC;

Moving exchanging center MSC is used to receive the solicited message that described BSC sends.

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