CN101064907B - Method for realizing base station selected mobile switching centre simulator of CDMA2000 system - Google Patents
Method for realizing base station selected mobile switching centre simulator of CDMA2000 system Download PDFInfo
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- CN101064907B CN101064907B CN2006100118259A CN200610011825A CN101064907B CN 101064907 B CN101064907 B CN 101064907B CN 2006100118259 A CN2006100118259 A CN 2006100118259A CN 200610011825 A CN200610011825 A CN 200610011825A CN 101064907 B CN101064907 B CN 101064907B
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Abstract
The invention discloses a method for the base station chooses the mobile switching center stimulator, especially the method in CDMA 2000 system to realize the base station choice. The method includes the operator choosing steps and the load sharing choosing step, said operator choosing steps which are used to when the user who send the service requirement to the MS are different, BSC analyses that which operator the user is according to the IMSI, and sends the messages to the corresponding MSCe; said load sharing steps which are used when the users who send the service requirement to the MS are the same one, BSC decides a MSCe message form the MSCeID maintained by BSC according to the IMSI and sends the messages to the corresponding MSCeID. The method can realize the balance of load MSCe, and realize the RAN source share effectively.
Description
Technical field
The present invention relates to a kind of radio communication system base station and select the method for switching center's controller, especially a kind of method that in the CDMA2000 system, realizes base station selected MSCe (Mobile Switching CenterEmulation, MSC simulator).
Background technology
Present CDMA2000 network is that an only same MSCe of BSC links to each other.Such network configuration has two drawbacks:
1. can't accomplish that wireless access network is shared.Wireless access network can only link to each other with the MSCe of an operator, that is to say one the cover wireless access network can only serve an operator, each operator must safeguard separately one the cover wireless access network, will inevitably increase cost.
2. if an operator safeguards a plurality of MSCe, then present network configuration does not realize the load balancing of each MSCe.
So, need find the solution that overcomes the problems referred to above.
Summary of the invention
Problem to be solved by this invention is to provide a kind of method that realizes base station selected MSCe in the CDMA2000 system, realizes that wireless access network is shared, and makes BSC to realize each MSCe load balancing as far as possible by choose reasonable MSCe.
For achieving the above object, the present invention proposes a kind of method that in the CDMA2000 system, realizes base station selected MSCe, it is characterized in that, comprising:
According to operator choosing steps, be used for when the user who sends transactions requests to travelling carriage is the user of different operators, base station controller at first parses the user which operator this user is according to IMSI International Mobile Subscriber Identity, then subscription request message is issued mobile switching centre's simulator of respective operator;
Select step according to load sharing, be used for when the user who sends transactions requests to travelling carriage is user in the same operator, base station controller is according to IMSI International Mobile Subscriber Identity selected mobile switching centre's simulator from the simulator ID of the mobile switching centre record that base station controller is safeguarded, subscription request message is issued selected mobile switching centre's simulator, and the simulator ID of mobile switching centre in the described simulator ID of the mobile switching centre record is configured according to the disposal ability of mobile switching centre's simulator.
Realize the method for base station selected mobile switching centre simulator in the above-mentioned CDMA2000 system, it is characterized in that the described simulator ID of mobile switching centre recording configuration method comprises:
A1: base station controller is safeguarded a dynamic table and a static table simultaneously to each operator;
A2: the mobile switching centre's simulator number configuration dynamic table that can reach according to base station controller configure interconnected and office direction and the length of static table, and two table length is fixed and is equated;
A3: according to the disposal ability configuration dynamic table of all mobile switching centre's simulators of base station controller interconnection and the initial value of static table, and the initial value of two tables is identical, this step further comprises:
A31) MSCe is divided into different unit according to disposal ability by different units, preserves the corresponding relation of unit number to MSCeID;
A32) processing unit after all are divided number is placed in two tables, and the number of times that allows the unit number divided occur in table is even;
A4: according to the content of the ID allocation list of operable mobile switching centre simulator.
Realize the method for base station selected mobile switching centre simulator in the above-mentioned CDMA2000 system, it is characterized in that the described simulator ID of mobile switching centre recording configuration method comprises:
B1: base station controller is safeguarded a dynamic table to each operator.
B2: the selection mobile switching centre simulator number that can reach according to base station controller configure interconnected and office direction and the length of disposal ability configuration dynamic table, and the logical or obstructed dynamic adjustment of the length of dynamic table according to the ID of mobile switching centre office direction;
B3: according to the initial value of all mobile switching centre's simulators configuration dynamic tables of base station controller interconnection.
B4: the content that disposes dynamic table according to the ID of operable mobile switching centre simulator;
Compared with prior art, the present invention has following beneficial effect:
The present invention adopts the different operators user to use operator's selection strategy, the user uses the load sharing strategy to realize the choose reasonable of BSC to MSCe in the same operator, reduced the frequent switching between MSCe, and realized each MSCe load balancing as much as possible, make the C/D interface message of CDMA2000 system reduce simultaneously, can also realize the RAN resource-sharing.
Below in conjunction with the drawings and specific embodiments the present invention is described in further details.
Description of drawings
Fig. 1 is that the embodiment of the invention selects to realize that according to operator wireless access network is shared, and BSC selects the MSCe network diagram;
Fig. 2 is that the embodiment of the invention is selected step according to load sharing, and BSC selects the MSCe network diagram.
Embodiment
Fig. 1 selects the MSCe network diagram according to operator choosing steps BSC, please refer to Fig. 1, and 101 zones among the figure (comprising core net MSCe and customer group) are the zone of an operator, and 102 zones are the business scope and the customer group of another operator.The parts that cross 103 are RAN in the middle of two zones, RAN can be two operators one of them business scope or third-party operator's business scope.
Under the different operators user situation, after BSC received the transactions requests of MS transmission, it was the client of which operator that BSC parses according to the user ID IMSI that carries in the signaling, thereby signaling is sent to the MSCe of respective operator.This is operator's selection strategy.This strategy can realize effectively that RAN shares.
Method by IMSI coupling MSCeID is as follows: at OMC (Operate﹠amp; Maintain Centre, operation maintenance center) disposes the IMSI number segment scope (also can use several Q-characters among the IMSI) of certain MSCeID correspondence as IMSI, if the Q-character of IMSI or this IMSI is in the IMSI scope of certain MSCe correspondence of OMC configuration, then BSC will choose this MSCe according to IMSI.
Fig. 2 selects step BSC to select the MSCe network diagram according to load sharing, with reference to figure 2, and the business scope of an operator of whole outer peripheral areas 202 expressions.Wherein that 203 area identifications is RAN, and the business scope that can be this operator also can be the business scope of second party operator.
To called subscriber's page response or control channel short message service, then BSC selects the principle of MSCe is that beep-page message or forward control channel short message signaling from which office direction come, and just which office direction is corresponding response message mail to.
Calling subscriber or user are independently registered, and the BSC below then adopting selects the method for MSCe.
Because customer group and MSCe are the business scopes of an operator, when the user when MS sends transactions requests, BSC uses certain algorithm definite MSCe from the record MSCeID of its maintenance according to user IMSI, thereby subscription request message is issued a MSCeID who chooses.Specific algorithm is as follows:
The MSCeID record that BSC safeguards is a dynamic table, and table length is the MSCe number (being N herein) that can reach with BSC configure interconnected and office direction; The content of list item is operable MSCe ID; The initial value of table is all MSCe with the BSC configure interconnected.But the distribution of table content will be accomplished the load sharing of MSCe.
Illustrate:
If 5 MSCe are arranged, and MSCeID is respectively 1,2,3,4,5, then Biao content is:
| 1 | 2 | 3 | 4 | 5 |
If the disposal ability of certain MSCe is more intense, then can embody by the configuration of table, for example the disposal ability of MSCe5 is 2 times of other MSCe disposal abilities, and then Biao length is 6, and the content of table is
| 1 | 2 | 3 | 4 | 5 | 5 |
BSC can be as required the content of adjustment form at any time, as: bearing bed can be reported the information whether office direction can reach to upper-layer service; Upper-layer service can initiatively be gone inquiry earlier behind Board Power up.When a certain office direction was unreachable, BSC just needed the content of adjustment form.
For example: if MSCe1 is unreachable, then Biao length adjustment is 5, and the content of table is adjusted into:
| ?2 | 3 | 4 | 5 | 5 |
If the MSCe5 office direction is unreachable, then Biao length adjustment is 4, and the content of table is adjusted into:
| 1 | 2 | 3 | 4 |
When MSCe1 by the obstructed office direction that becomes of office direction when logical, the length variations of MSCeID table is 6, the content of table is adjusted into:
| ?2 | 3 | 4 | 5 | 5 | 1 |
Because the length of MSCeID table is dynamic change, so select the algorithm (such as hash algorithm) of list item to be associated with the length of MSCeID table by IMSI.For example can adopt several of IMSI to pass through the certain calculation algorithm of the length of mould MSCeID table then.As above show length position 6.IMSI is 460030978526548, can adopt the method for 4 addition deliverys (mould 6) behind the IMSI, and what obtain showing is designated as 5 down, and then the MSCeID in the table is 5.
Above embodiment has provided the collocation method that a kind of concrete MSCeID writes down, and the length of this method MSCeID record sheet is random length, and this collocation method advantage is the load balancing that can accomplish MSCe.Shortcoming is that if a MSCe breaks down, then Biao content can change, and identical IMSI will change by the MSCeID of the list item correspondence that hash algorithm obtains, and the phenomenon that IMSI registers back and forth at different MSCe will occur like this.For addressing this problem, the invention provides the collocation method of another better MSCeID record:
1.BSC each operator is safeguarded a dynamic table and a static table simultaneously, and the length of two tables is fixed and equate.
2. dispose the initial content of two tables according to the disposal ability of MSCe, this step further comprises:
(1) MSCe is divided into different unit according to disposal ability by different units, preserving the corresponding relation of unit number to MSCeID, is unit as the disposal ability with MSCe1, and the disposal ability of MSCe2 is the twice of MSCe1, then MSCe2 is divided into two unit, and this finishes in the OMC configuration.
(2) processing unit after all are divided number is placed in two tables, and the number of times that allows the unit number divided occur in table is even.
Thereby 3.BSC find corresponding MSCeID to choose a MSCe according to unit number.When concrete BSC selected MSCeID according to IMSI, earlier according to low four items that correspond in the option table of IMSI, retrieval unit number found MSCeID according to unit number again.
Be example with regular length 16 below, describe in detail:
If 4 MSCe are arranged, and ID is respectively 1,2,3,4, wherein the disposal ability of MSCe4 is 2 times of other MSCe, and then the unit number of Hua Fening is 1,2,3,4,5, the initial content of dynamic table then, and just the content of static table is:
| 1 | 2 | 3 | 4 | 5 | 1 | 2 | 3 | 4 | 5 | 1 | 2 | 3 | 4 | 5 | 1 |
Minimum four as IMIS is 15 through the Hash operation result, and the unit number that then corresponds in the table is 5, and finding MSCeID according to unit number is 4.
The content of dynamic table can change, and the content of static table immobilizes, unless change has taken place the office direction that OMC configuration BSC connects.As, bearing bed can be reported the information whether office direction can reach to upper-layer service; Upper-layer service also can initiatively be gone inquiry earlier behind Board Power up.When a certain office direction was unreachable, the content of dynamic table just needed to adjust.As: unreachable as MSCe2, the content of dynamic table is adjusted into:
| ?1 | 4 | 3 | 4 | 5 | 1 | 3 | 3 | 4 | 5 | 1 | 5 | 3 | 4 | 5 | 1 |
Unreachable as MSCe4, dynamic table becomes as follows:
| 1 | 1 | 3 | 3 | 1 | 1 | 3 | 3 | 3 | 1 | 1 | 3 | 3 | 1 | 3 | 1 |
When an office direction by office direction unreachable become office direction and can reach after, replace before then replacing with the unit number of this office direction correspondence it unit number (with static table relatively).As, when MSCe2 became office direction and can reach by office direction is unreachable, the content of dynamic table was adjusted into:
| 1 | 2 | 3 | 3 | 1 | 1 | 2 | 3 | 3 | 1 | 1 | 2 | 3 | 1 | 3 | 1 |
When a certain office direction by office direction unreachable become office direction and can reach after, imbalance can appear in the unit number in the possible option table, as top dynamic table content.But consider that two office directions generally can not arranged simultaneously is unreachable, and if office direction unreachable, generally can rush to repair, so do not consider to arrange again option table.
Certainly, also can not safeguard static table, as long as to be assigned record just passable to the most initial, dynamic table and original records compare then.
What more than provide is that the length of table is fixed as 16 example, certainly the length of table also can be that other fixed value is such as 64, using 16, what consider is that the number of the MSCe of general BSC interconnection can not surpass 8, so the serious unbalanced phenomenon of load appears in the MSCe that can not occur selecting.The length of table is big more, and it is more little the unbalanced probability of MSCe load to occur, gets final product so tabular value is got slightly larger value, is not limited to 16,64, can be 20,22 etc.
Present embodiment has provided with the form of table and has carried out the MSCeID record, but the form that the MSCeID record can be not limited to show.
To sum up, being BSC based on the method for load sharing policy selection MSCe uses rational algorithm to determine a list item in the MSCeID record sheet according to user IMSI, thereby selects a MSCe, and message is sent on the MSCe that chooses.This method has reduced the frequent switching between MSCe, makes the C/D interface message of CDMA2000 system reduce simultaneously, has realized each MSCe load balancing as much as possible.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (8)
1.CDMA2000 realize the method for base station selected mobile switching centre simulator in the system, it is characterized in that, comprising:
According to operator choosing steps, be used for when the user who sends transactions requests to travelling carriage is the user of different operators, base station controller at first parses the user which operator this user is according to IMSI International Mobile Subscriber Identity, then subscription request message is issued mobile switching centre's simulator of respective operator;
Select step according to load sharing, be used for when the user who sends transactions requests to travelling carriage is user in the same operator, base station controller is according to IMSI International Mobile Subscriber Identity selected mobile switching centre's simulator from the simulator ID of the mobile switching centre record that base station controller is safeguarded, subscription request message is issued selected mobile switching centre's simulator, and the simulator ID of mobile switching centre in the described simulator ID of the mobile switching centre record is configured according to the disposal ability of mobile switching centre's simulator.
2. realize the method for base station selected mobile switching centre simulator in the CDMA2000 according to claim 1 system, it is characterized in that the described simulator ID of mobile switching centre recording configuration method comprises:
Steps A 1) base station controller is safeguarded a dynamic table and a static table simultaneously to each operator;
Steps A 2) the mobile switching centre's simulator number configuration dynamic table that can reach according to base station controller configure interconnected and office direction and the length of static table;
Steps A 3) basis and the disposal ability configuration dynamic table of all mobile switching centre's simulators of base station controller interconnection and the initial value of static table;
Steps A 4) according to the ID configuration dynamic table of operable mobile switching centre simulator and the content of static table.
3. realize the method for base station selected mobile switching centre simulator in the CDMA2000 according to claim 2 system, it is characterized in that dynamic table in the described steps A 1 and static table length are fixed and equated.
4. realize the method for base station selected mobile switching centre simulator in the CDMA2000 according to claim 2 system, it is characterized in that in the described steps A 3, the initial value of dynamic table and static table is identical.
5. according to the method that realizes base station selected mobile switching centre simulator in claim 2 or the 4 described CDMA2000 systems, it is characterized in that described steps A 3 further comprises:
Step 31) MSCe is divided into different unit according to disposal ability by different units, preserves the corresponding relation of unit number to MSCeID;
Step 32) processing unit after all are divided number is placed in two tables, and the number of times that allows the unit number divided occur in table is even.
6. realize the method for base station selected mobile switching centre simulator in the CDMA2000 according to claim 1 system, it is characterized in that the described simulator ID of mobile switching centre recording configuration method comprises:
Step B1) base station controller is safeguarded a dynamic table to each operator.
Step B2) length of the selection mobile switching centre simulator number configuration dynamic table that can reach according to base station controller configure interconnected and office direction;
Step B3) according to the initial value of all mobile switching centre's simulators configuration dynamic tables of base station controller interconnection.
Step B4) according to the content of the ID of operable mobile switching centre simulator configuration dynamic table;
7. realize the method for base station selected mobile switching centre simulator in the CDMA2000 according to claim 6 system, it is characterized in that, the length of dynamic table logical or obstructed dynamic adjustment among the described step B2 according to the ID of mobile switching centre office direction.
8. realize the method for base station selected mobile switching centre simulator in the CDMA2000 according to claim 7 system, it is characterized in that the length of described dynamic table is according to the disposal ability configuration of mobile switching centre's simulator.
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| CN101500321B (en) * | 2008-02-01 | 2011-11-23 | 中兴通讯股份有限公司 | Call connection establishing method |
| CN101511131B (en) | 2009-03-04 | 2010-09-22 | 上海华为技术有限公司 | Routing method, device and system |
| WO2011022873A1 (en) * | 2009-08-25 | 2011-03-03 | Huawei Technologies Co., Ltd. | Technique for routing a signal in a communication network |
| CN102075871B (en) * | 2009-11-19 | 2014-10-08 | 华为技术有限公司 | method for selecting service node, network node and communication system |
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| US6055433A (en) * | 1996-09-20 | 2000-04-25 | Northern Telecom Limited | Data processing system and method for balancing a load in a communications network |
| CN1494807A (en) * | 2001-03-02 | 2004-05-05 | ����ɭ�绰�ɷ�����˾ | Method and devices for routing message to network server in server pool |
| CN1496659A (en) * | 2001-03-09 | 2004-05-12 | ��˹��ŵ�� | A network and metod for sharing radio acess nodes between core networks |
| WO2006031157A1 (en) * | 2004-09-16 | 2006-03-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Routing based on transmission utilization |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6055433A (en) * | 1996-09-20 | 2000-04-25 | Northern Telecom Limited | Data processing system and method for balancing a load in a communications network |
| CN1494807A (en) * | 2001-03-02 | 2004-05-05 | ����ɭ�绰�ɷ�����˾ | Method and devices for routing message to network server in server pool |
| CN1496659A (en) * | 2001-03-09 | 2004-05-12 | ��˹��ŵ�� | A network and metod for sharing radio acess nodes between core networks |
| WO2006031157A1 (en) * | 2004-09-16 | 2006-03-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Routing based on transmission utilization |
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Granted publication date: 20100623 Termination date: 20190429 |