CN1490965A - Soft switching method between mobile switching center in CDMA 2000 1X mobile communication system - Google Patents
Soft switching method between mobile switching center in CDMA 2000 1X mobile communication system Download PDFInfo
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Abstract
A soft handover method among mobile switching centers in CDMA2000 1X mobile communication system, includes following steps: a. utilizes the connection of A3 and A7 among the current BS takes the procedure and message of soft handover; b. S-MSC informs T-MSC: between MSC the soft handover happens. This invention based on the procedure of soft handover of the connection of A3 and A7 between BS, studies the soft handover procedure of connection of A3 and A7 among MSC through BS, and provides material solving scheme, thereby makes it possible to use the soft handover between MSC replacing hard handover, in this way can reduce the expected Call dripping, meanwhile makes the T-MSC to be able to gain the relevant MS information after making soft handover between MSC through the connection of A3 an A7 between BS.
Description
Technical field
The present invention relates to the soft handover of CDMA2000 1X system, particularly utilize the A3 between BS (base station) to be connected the soft handover method that carries out between MSC (mobile switching centre) with A7.
Background technology
Soft handover is one of distinctive key technology of CDMA (code division multiple access) mobile communication system, and it has played the diversity effect of Traffic Channel at the intersection of the area of coverage of two BS, can significantly reduce the call drop that causes owing to switching.So-called soft handover, exactly when MS (mobile radio station) need communicate by letter with a new BS, do not interrupt earlier with original BS between get in touch, but earlier and new BS get in touch, and then getting in touch between interruption and the original BS, be exactly " connect afterwards earlier and break " in brief.
Dispose in the process of cdma network in CHINAUNICOM, run into the switching problem between MSC.In Shanghai, when the user crosses over Huangpu River, be the service area that enters another MSC from the service area of a MSC just, the direct-cut operation between MSC can take place in this moment.And direct-cut operation adopts is " earlier companys of having no progeny " method, exactly when MS need communicate by letter with a new BS, getting in touch between first interruption and the original BS, and then get in touch with new BS.The intensive area of traffic of Huangpu River two sides has just in time been passed through on the border of the direct-cut operation between this MSC, and self limitation of the direct-cut operation between MSC can cause lower handover success rate and higher cutting off rate, has had a strong impact on the service quality of operator.In order to address this problem, operator and equipment supplier have adopted a lot of methods, and for example optimization of wireless environment adopts guard time to avoid frequent switching, moves handoff boundary or the like.But want to tackle the problem at its root, the direct-cut operation that substitutes between MSC with the soft handover between MSC is only final solution.
Existing interoperability standard (IOS) has defined by the A3 between BS and has been connected the process of carrying out soft handover or hard soft handover with A7.In order better prior art and this patent to be described, the following description saves with reference to 3GPP2 A.S0001 access network interface interoperability standard 3.5.2.3.
Figure 10 has described CDMA2000 1X network interface reference model.Wherein A3 is connected with professional with the signaling exchange that the A7 interface is used between BS, to support based on the soft handover between the BS of group technology.The A3 interface is made of signaling and customer service subchannel, is responsible for setting up with removal A3 is professional being connected.The signaling that is used to support soft handover between A7 interface transmission BS.
Figure-9 has described and existingly has been connected the process of carrying out soft handover or More Soft Handoff with A7 by the A3 between BS.This process had both comprised that setting up new A3 connects, and had also comprised the new sub-district of increase in existing A3 connection.
901 source BS need to determine the calling of one or more sub-districts of target BS in supporting to switch.Source BS
Connect to target BS transmission A7-handoff request (A7-Handoff by the A7 between BS
Request) message, and start handoff request timer (hereinafter to be referred as Thoreq).
902 target BS send A3-connection (A3-Connect) message to source BS and come initialization A3 even professional
Connect, and start A3-connection timer (hereinafter to be referred as Tconn3).Notice that single A7-cuts
Change request message and can cause a plurality of A3 establishment of connections, each connects uses independent A3-
Connection message.
903 source BS respond A3-CONNect Acknowledgement (A3-Connect Ack) message, and A3 connects to finish
Set up, or confirm the increase of sub-district in the existing A3 connection.Target BS stops timer Tconn3.
904 source BS begin to send forward frame to target BS.
905 in case synchronously, target BS just begins to transmit forward frame.
906 after first forward frame of receiving from source BS, and target BS begins to send reverse idle frame.
This reverse frames comprises the synchronous necessary timing alignment information that obtains.
907 target BS send the A7-handoff request to source BS and confirm (A7-Handoff Request Ack)
Message, the success that comes indicating cell to increase.Source BS stops timer Thoreq.
If 908 source BS have selected to need notified target BS side to transmit and the beginning of reception, as source BS
Selection allocation units (SDU) functional entity and target BS synchronous the professional son letter of A3
During the road, target BS will be by A3-traffic channel state (A3-Traffic Channel
Status) message is responded.This step can take place any time after step 04.
909 source BS send handover command messages (Handoff Direction to travelling carriage (hereinafter to be referred as MS)
Message), newly-increased sub-district is increased in the Active Set.
910 MS respond travelling carriage and confirm instruction (MS Ack Order).
911 MS send handoff completion message (Handoff Completion Message), and are right to indicate
The result that handover command messages is successfully handled.
912 source BS confirm that instruction (BS Ack Order) confirms switching finished and disappear by sending the base station
The reception of breath.
913 source BS send to switch carry out (Handoff Performed) message give service MSC (with
Under be called for short S-MSC), what this message can be after source BS receives handoff completion message appoints
Send when.
Existing interoperability standard can have been supported to be connected the process of carrying out soft handover with A7 by the A3 between BS.But when source BS is controlled by different MSC with target BS, the situation that S-MSC and target MSC (hereinafter to be referred as T-MSC) belong to different operators respectively may appear.With Fig. 8 is example, when the user during to the service area roaming of the B of operator, generally is the direct-cut operation that carries out between MSC from the service area of the A of operator, call drop takes place easily.In order to improve service quality, operator wishes to substitute direct-cut operation with the soft handover between MSC.This just mean MS in beginning with before target BS is communicated by letter, do not interrupt and the communicating by letter of source BS.This just greatly reduces and switches the call drop odds.Operator can be connected the soft handover of realizing between MSC by the A3 between BS with A7.After A3 connect to set up, MS had been in the service of certain sub-district of target BS, and this MS also is in the control of source BS simultaneously.In other words, this MS had both used the system resource of the A of operator at the moment, had used the system resource of the B of operator again.This also just means, the user should distinguish defrayment for the resource of the different operators of its use.Therefore, the MSC of A of operator and the B of operator should be able to generate call detail record (CDR).S-MSC can generate call detail record, because it is controlling call handling process all the time before switching generation and after switching generation.Can but how T-MSC produce call detail record after MS successfully is linked into its sub-district of controlling? in addition, when MS is connected soft handover behind the service area of T-MSC by the A3 between BS with A7, do not have the process that the position is upgraded.Therefore T-MSC and do not know this user's information, relevant traffic measurement also can't carry out.
Owing to is connected with A7 by the A3 between BS and carries out the new technology that soft handover is CDMA2000 1X system introducing, existing mechanism can not satisfy fully by the A3 between BS and is connected the soft handover that carries out between MSC with A7.
Summary of the invention
The method that the purpose of this invention is to provide the soft handover between mobile switching centre in a kind of CDMA2000 1X mobile communication system, the present invention is connected the process of carrying out soft handover based on existing by the A3 between BS with A7, do not changing under the existing prerequisite that is connected the process of carrying out soft handover and message by the A3 between BS with A7, by increasing a piece of news newly, notify T-MSC by S-MSC: after the soft handover between MSC takes place, in the service area of T-MSC, whether MS uses the system resource of T-MSC to MS.
For achieving the above object, the soft handover method between mobile switching centre comprises step in the CDMA2000 1X mobile communication system:
A. utilize the A3 between the existing BS to be connected the process and the message of carrying out soft handover with A7;
Soft handover has taken place between the b.S-MSC notice T-MSC:MSC.
The present invention is connected the process of carrying out soft handover based on existing by the A3 between BS with A7, study being connected the process of carrying out the soft handover between MSC with A7 by the A3 between BS, and concrete solution proposed, thereby make the direct-cut operation that substitutes between MSC with the soft handover between MSC become possibility, so just can reduce the cutting off rate when switching, improve systematic function, improve service quality.Simultaneously, also make T-MSC can obtain to be connected with A7 the relevant information of the MS behind the soft handover that carries out between MSC, charge and traffic measurement thereby finish by the A3 between BS.
Description of drawings
Fig. 1 has described the successful operating process of switching notice (Handoff Notification) message.
Fig. 2 has described the flow process of the increase of the soft handover between MSC.
Fig. 3 has described the flow process of the removal of the soft handover between MSC.
Fig. 4 has described the flow process of the soft switching subzone between target BS removal MSC.
Fig. 5 has described the flow process of the call clearing of the soft handover between the MSC that MS initiates.
Fig. 6 has described the flow process of the call clearing of the soft handover between the MSC that BS initiates.
Fig. 7 has described the flow process of the call clearing of the soft handover between the MSC that MSC initiates.
Fig. 8 is the switching schematic diagram between the MSC of existing different operators.
Fig. 9 existingly is connected the flow process of carrying out soft handover or More Soft Handoff by the A3 between BS with A7.
Figure 10 is an existing C DMA2000 1X network interface reference model.
Embodiment
When the soft handover between MSC is connected realization by the A3 between BS with A7, S-MSC will operate by switching notice and notify T-MSC, and whether MS is in the service area of T-MSC.This message is used for charging, statistics and supplementary service and the value-added service in the future of T-MSC.In the switching notice operation, a new message one is switched notice (Handoff Notification) message, will send to T-MSC from S-MSC.
Figure-1 has described the successful operating process of switching notice (Handoff Notification) message.
101 when S-MSC determines that MS is connected the soft handover that has carried out between MSC by the A3 between BS with A7, S-
MSC will send handoff notification message to T-MSC.
Parameter in the handoff notification message is provided with as shown in the table.
| Parameter name | Parameter declaration | Parameter type |
| International mobile subscriber identity (IMSI) | The international mobile subscriber identity that is connected the MS that carries out the soft handover between MSC by the A3 between BS with A7. | Essential |
| Electronics string number (ESN) | The electronics string number that is connected the MS that carries out the soft handover between MSC by the A3 between BS with A7. | Essential |
| Charging identifier (Billing ID) | Be used for chargeing and the identification controlling MSC. | Essential |
| Target Cell Identifier (Target Cell ID) | The sign of intended target sub-district. | Essential |
| Switch reasons (Handoff Reason) | Switch the reason that takes place. | Essential |
| CDMA mobility protocol version (CDMA Mobile Protocol Revision) | Comprise the MS protocol version. | Optional |
| Location of mobile station (MS Location) | The position of the MS of estimation is provided, comprises latitude and longitude information. | Optional |
After T-MSC receives switching notice (Handoff Notification) message, illustrate that MS has entered the service area of T-MSC, MS has begun or has finished to use the system resource of S-MSC.T-MSC then can begin according to parameter wherein to generate call detail record, finishes relevant traffic measurement.Based on A3/A7 interface and switching notice operation, the present invention will provide by A3/A7 between BS and connect the message flow that carries out soft handover between MSC, mainly comprise following handling procedure:
(1) increase of soft handover between MSC
In the soft handover between MSC, determine which sub-district to be increased in the calling, and after finishing switching, notify the current MS of T-MSC to be in the service area of T-MSC by handoff notification message by S-MSC by the connection of the A3/A7 between BS by source BS.
Figure-2 has described the message flow of the increase of the soft handover between MSC.Step 201 ~ 213rd is by the standard step of the increase of A3/A7 connection carrying out soft handover between BS.201 source BS need to determine the calling of one or more sub-districts of target BS in supporting to switch.Source BS
Connect to target BS transmission A7-handoff request (A7-Handoff by the A7 between BS
Request) message, and start timer Thoreq.
202 target BS send A3-connection (A3-Connect) message to source BS and come initialization A3 even professional
Connect, and start timer Tconn3.Notice that single A7-handoff request message can cause
A plurality of A3 establishment of connections, each connects uses independent A3-connection message.
203 source BS respond A3-CONNect Acknowledgement (A3-Connect Ack) message, and A3 connects to finish
Set up, or confirm the increase of sub-district in the existing A3 connection.Target BS stops timer Tconn3.
204 source BS begin to send forward frame to target BS.
205 in case synchronously, target BS just begins to transmit forward frame.
206 after first forward frame of receiving from source BS, and target BS begins to send reverse idle frame.
This reverse frames comprises the synchronous necessary timing alignment information that obtains.
207 target BS send the A7-handoff request to source BS and confirm (A7-Handoff Request Ack)
Message, the success that comes indicating cell to increase.Source BS stops timer Thoreq.
If 208 source BS have selected to need notified target BS side to transmit and the beginning of reception, as source BS
Selection allocation units (SDU) functional entity and target BS synchronous the professional son letter of A3
During the road, target BS will be by A3-traffic channel state (A3-Traffic Channel
Status) message is responded.This step can take place any time after step 204.
209 source BS send handover command messages (Handoff Direction Message) to MS, will
Newly-increased sub-district is increased in the Active Set.
210 MS respond travelling carriage and confirm instruction (MS Ack Order).
211 MS send handoff completion message (Handoff Completion Message), and are right to indicate
The result that handover command messages is successfully handled.
212 source BS confirm that instruction (BS Ack Order) confirms switching finished and disappear by sending the base station
The reception of breath.
213 source BS send to switch and carry out (Handoff Performed) message to S-MSC, and this message can
Send with any time after receiving handoff completion message at source BS.
Step 214 is switching notice operations that the present invention increases newly.
214 S-MSC send switching notice (Handoff Notification) message to T-MSC, so that
Instruct MS has been in the service area of T-MSC.
When (2) the removal source BS of the soft handover between MSC decision will be removed designated cell, can require the collaborative related resource that discharges of target BS, and remove the A3 connection, notify the current MS of T-MSC by S-MSC not in the service area of T-MSC by handoff notification message then.
Figure-3 has described the message flow of the removal of the soft handover between MSC.
Step 301 ~ 311st is by the standard step of the removal of A3/A7 connection carrying out soft handover between BS.
301 source BS put into A3-CEData with handover command messages (Handoff Direction Message)
After sending to target BS in the message, target BS sends to MS with this message, and order MS is from activating
Concentrate and remove one or more sub-districts.
302 source BS and target BS send handover command messages (Handoff Direction to MS
Message)。
303 MS confirm that to source BS and target BS transmission travelling carriage instruction (MS Ack Order) is right to confirm
The reception of handover command messages (Handoff Direction Message).
304 target BS are put into A3-CEData with travelling carriage confirmation instruction (MS Ack Order) and are oppositely disappeared
In the breath, send to source BS.
305 MS are by sending handoff completion message (Handoff Completion Message), to refer to
Show the result that handover command messages is successfully handled.
306 source BS confirm that instruction (BS Ack Order) confirms switching finished and disappear by sending the base station
The reception of breath.
307 source BS send A7-and cancel target (A7-Drop Target) message, with request target BS from
During calling out, this removes the sub-district of appointment.Simultaneously, source BS open cancel the target timing device (below
Be called for short Tdrptgt).
After 308 target BS receive that A7-cancels target (A7-Drop Target) message, discharge and appointment
The system resource that the sub-district is relevant.Target BS is to selection allocation units (SDU) function of source BS
Entity sends A3-and removes (A3-Remove) message, and unlatching A3-removal timer (with
Under be called for short Tdiscon3).
Selection allocation units (SDU) functional entity of 309 source BS is responded A3-and is removed confirmation (A3-Remove
Ack) message, and discharge associated inner system resource.Target BS stops timer Tdiscon3.
310 target BS send A7-and cancel target confirmation (A7-Drop Target Ack) message, to source BS
Confirm the removal of designated cell.Source BS stops timer Tdrptgt.
311 source BS send to switch and carry out (Handoff Performed) message to S-MSC, and this message can
Send with any time after receiving handoff completion message at source BS.
Step 312 is switching notice operations that the present invention increases newly.
312 S-MSC send switching notice (Handoff Notification) message to T-MSC, so that
Instruct MS is not in the service area of T-MSC.
(3) target BS is removed the soft switching subzone between MSC
For a certain reason, target BS need ask to remove one or more sub-districts from call out, and with the collaborative related resource that discharges of source BS, and remove relevant A3 and connect, notify the current MS of T-MSC by S-MSC not in certain service area of T-MSC by handoff notification message then.Figure-4 has described the message flow of the soft switching subzone between target BS removal MSC.Step 401 ~ 410 are to be connected by A3/A7 between BS to carry out the standard step that target BS is removed the sub-district with step 412.
Step 411 is switching notice operations that the present invention increases newly.
401 target BS determine one or more sub-districts can no longer participate in soft handover, therefore send to source BS
A7-object removal request (A7-Target Removal Request) message.Target BS is opened
Open object removal timer (hereinafter to be referred as Ttgtrmv).
402 source BS send handover command messages (Handoff Direction Message) to MS, life
Make MS from Active Set, remove the sub-district.
403 MS send travelling carriage and confirm that instruction (MS Ack Order) disappears to have acknowledged receipt switching command
Breath.
404 MS are by sending handoff completion message (Handoff Completion Message), to refer to
Show the result that handover command messages is successfully handled.
405 source BS confirm that instruction (BS Ack Order) confirms switching finished and disappear by sending the base station
The reception of breath.
406 source BS send A7-and cancel target (A7-Drop Target) message, and request target BS is from this
Remove the sub-district of appointment in the calling.Simultaneously, source BS opening timing device Tdrptgt.
After 407 target BS receive that A7-cancels target (A7-Drop Target) message, discharge and appointment
The system resource that the sub-district is relevant.Target BS is to selection allocation units (SDU) function of source BS
Entity sends A3-and removes (A3-Remove) message, and opening timing device Tdiscon3.
Selection allocation units (SDU) functional entity of 408 source BS is responded A3-and is removed confirmation (A3-Remove
Ack) message, and discharge associated inner system resource.Target BS stops timer Tdiscon3.
409 target BS send A7-and cancel target confirmation (A7-Drop Target Ack) message, to source BS
Confirm the removal of designated cell.Source BS stops timer Tdrptgt.
410 source BS send to switch and carry out (Handoff Performed) message to S-MSC, and this message can
Send with any time after receiving handoff completion message at source BS.
411 S-MSC send switching notice (Handoff Notification) message to T-MSC, so that
Instruct MS is not in the service area of T-MSC.
412 source BS respond A7-object removal response (A7-Target Removal to target BS
Response) message.Target BS stops timer Ttgtrmv.
(4) call clearing of the soft handover between the MSC of MS initiation
If call clearing is initiated by MS, source BS can ask S-MSC to remove calling, and carry out the target program of cancelling of A7 interface, and from call out, remove all target BS, notify the current MS of T-MSC by S-MSC not in the service area of T-MSC by handoff notification message then.Figure-5 has described the message flow of the call clearing of the soft handover between the MSC that MS initiates.Step 501 ~ 509th, the standard step of the call clearing of the soft handover that MS initiates.
501 MS come by send release command (Release Order) to BS on reverse traffic channel
Removing makes a call.
502 source BS send to remove the removing that makes a call of request (Clear Request) message to S-MSC.
503 S-MSC send clear command (Clear Command) message to source BS, and order source BS discharges
Relevant private resource, for example land circuit is connected with A3/A7.
504 receive clear command message after, source BS discharges the land circuit distributed, and at forward business
Send release command (Release Order) to MS on the channel and discharge relevant Radio Resource.
505 source BS send A7-and cancel target (A7-Drop Target) message, and request target BS is from this
Remove the sub-district of appointment in the calling.Simultaneously, source BS opening timing device Tdrptgt.
After 506 target BS receive that A7-cancels target (A7-Drop Target) message, discharge and appointment
The system resource that the sub-district is relevant.Target BS is to selection allocation units (SDU) function of source BS
Entity sends A3-and removes (A3-Remove) message, and opening timing device Tdiscon3.
Selection allocation units (SDU) functional entity of 507 source BS is responded A3-and is removed confirmation (A3-Remove
Ack) message, and discharge associated inner system resource.Target BS stops timer Tdiscon3.
508 target BS send A7-and cancel target confirmation (A7-Drop Target Ack) message, to source BS
Confirm the removal of designated cell.Source BS stops timer Tdrptgt.
509 source BS send to remove to S-MSC and finish (Clear Complete) message, and S-MSC discharges the end
The transmission of layer connects.
Step 510 is switching notice operations that the present invention increases newly.
510 S-MSC send switching notice (Handoff Notification) message to T-MSC,
Point out that this calling is eliminated.
(5) call clearing of the soft handover between the MSC of BS initiation
If call clearing is initiated by source BS, source BS can ask S-MSC to remove calling, and carry out the target program of cancelling of A7 interface, and from call out, remove all target BS, notify the current MS of T-MSC by S-MSC not in the service area of T-MSC by handoff notification message then.
Figure-6 has described the message flow of the call clearing of the soft handover between the MSC that BS initiates.
Step 601 ~ 607th, the standard step of the call clearing of the soft handover that BS initiates.
601 when wireless channel fault or MS un-activation, and source BS sends to S-MSC and removes request (Clear
Request) the message removing that makes a call.
602 S-MSC send clear command (Clear Command) message to source BS, and order source BS discharges
Relevant private resource, for example land circuit is connected with A3/A7.
603 source BS send A7-and cancel target (A7-Drop Target) message, and request target BS is from this
Remove the sub-district of appointment in the calling.Simultaneously, source BS opening timing device Tdrptgt.
After 604 target BS receive that A7-cancels target (A7-Drop Target) message, discharge and appointment
The system resource that the sub-district is relevant.Target BS is to selection allocation units (SDU) function of source BS
Entity sends A3-and removes (A3-Remove) message, and opening timing device Tdiscon3.
Selection allocation units (SDU) functional entity of 605 source BS is responded A3-and is removed confirmation (A3-Remove
Ack) message, and discharge associated inner system resource.Target BS stops timer Tdiscon3.
606 target BS send A7-and cancel target confirmation (A7-Drop Target Ack) message, to source BS
Confirm the removal of designated cell.Source BS stops timer Tdrptgt.
607 source BS send to remove to S-MSC and finish (Clear Complete) message, and S-MSC discharges the end
The transmission of layer connects.
Step 608 is switching notice operations that the present invention increases newly.
608 S-MSC send switching notice (Handoff Notification) message to T-MSC,
Point out that this calling is eliminated.
(6) removing if the call clearing S-MSC of the soft handover between the MSC that MSC initiates makes a call, can remove calling by order source BS, source BS carries out the target program of cancelling of A7 interface, from call out, remove all target BS, notify the current MS of T-MSC by S-MSC not in the service area of T-MSC by handoff notification message then.Figure-7 has described the message flow of the call clearing of the soft handover between the MSC that MSC initiates.Step 701 ~ 708th, the standard step of the call clearing of the soft handover that MSC initiates.
701 S-MSC send clear command (Clear Command) message to source BS, and BS discharges with indication
Relevant private resource, for example land circuit is connected with A3/A7.
702 source BS release by send release command (Release Order) on forward traffic channel
Put relevant Radio Resource.
703 MS send release command (Release Order) to source BS and confirm relevant Radio Resource
Discharge.
704 source BS send A7-and cancel target (A7-Drop Target) message, and request target BS is from this
Remove the sub-district of appointment in the calling.Simultaneously, source BS opening timing device Tdrptgt.
After 705 target BS receive that A7-cancels target (A7-Drop Target) message, discharge and appointment
The system resource that the sub-district is relevant.Target BS is to selection allocation units (SDU) function of source BS
Entity sends A3-and removes (A3-Remove) message, and opening timing device Tdiscon3.
Selection allocation units (SDU) functional entity of 706 source BS is responded A3-and is removed confirmation (A3-Remove
Ack) message, and discharge associated inner system resource.Target BS stops timer Tdiscon3.
707 target BS send A7-and cancel target confirmation (A7-Drop Target Ack) message, to source BS
Confirm the removal of designated cell.Source BS stops timer Tdrptgt.
708 source BS send to remove to S-MSC and finish (Clear Complete) message, and S-MSC discharges the end
The transmission of layer connects.
Step 709 is switching notice operations that the present invention increases newly.
7-9 S-MSC sends switching notice (Handoff Notification) message to T-MSC,
Point out that this calling is eliminated.
Claims (12)
1. the soft handover method between mobile switching centre in the CDMA2000 1X mobile communication system comprises step:
A. the A3 between the existing BS is connected the process and the message of carrying out soft handover with A7;
Soft handover has taken place between the b.S-MSC notice T-MSC:MSC.
2. by the described method of claim 1, it is characterized in that described notifying process comprises:
S-MSC notice T-MSC:MS is in the service area of T-MSC, and uses the system resource of T-MSC.
3. by the described method of claim 1, it is characterized in that described switching notice comprises handoff notification message (Handoff Notification).
4. by the described method of claim 1, it is characterized in that described notice comprises step:
BS decision in source will be increased to the sub-district of appointment in the calling;
Finish switching by the connection of the A3/A7 between BS;
S-MSC operates by switching notice and notifies the current MS of T-MSC to be in the service area of T-MSC.
5. by the described method of claim 1, it is characterized in that described notice comprises step:
When BS decision in source will be removed designated cell, require the collaborative related resource that discharges of target BS;
Removing A3 connects;
Being operated by switching notice by S-MSC then notifies the current MS of T-MSC not in the service area of target MSC (T-MSC).
6. by the described method of claim 1, it is characterized in that described notice comprises step:
If target BS need ask to remove one or more sub-districts from call out, and work in coordination with the release related resource with source BS;
Removing relevant A3 connects;
Operate by switching notice by S-MSC and to notify the current MS of T-MSC not in certain service area of target T-MSC.
7. by the described method of claim 1, it is characterized in that described notice comprises step:
When MS made a call removing, source BS request S-MSC removed calling;
Carry out the target program of cancelling of A7 interface, from call out, remove all target BS;
Operate by switching notice by S-MSC and to notify the current MS of T-MSC not in the service area of target T-MSC.
8. by the described method of claim 1, it is characterized in that described notice comprises step:
When source BS made a call removing, source BS can ask S-MSC to remove calling;
Carry out the target program of cancelling of A7 interface, from call out, remove all target BS;
Operate by switching notice by S-MSC and to notify the current MS of T-MSC not in the service area of target T-MSC.
9. by the described method of claim 1, it is characterized in that described notice comprises step:
The removing if service S-MSC makes a call can order source BS to remove calling;
Source BS carries out the target program of cancelling of A7 interface, removes all target BS from call out;
Operate the current MS of notification target (T-MSC) by S-MSC not in the service area of T-MSC by switching notice.
10. by the described method of claim 1, it is characterized in that described switching comprises following parameter:
International mobile subscriber identity, electronics string number, charging identifier, Target Cell Identifier, switch reasons, CDMA mobility protocol version and location of mobile station.
11., it is characterized in that described T-MSC utilizes the parameter in the handoff notification message to produce call detail record by the described method of claim 10.
12., it is characterized in that described T-MSC utilizes the parameter in the handoff notification message to finish traffic measurement by the described method of claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA02145812XA CN1490965A (en) | 2002-10-14 | 2002-10-14 | Soft switching method between mobile switching center in CDMA 2000 1X mobile communication system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384188C (en) * | 2005-02-05 | 2008-04-23 | 华为技术有限公司 | Method and system for realizing bidirectional alternative operation of circuit field and group field |
| CN100426916C (en) * | 2004-05-10 | 2008-10-15 | 华为技术有限公司 | Implementing method for charging in switching time in mobile communication system |
| CN100459505C (en) * | 2005-10-27 | 2009-02-04 | 华为技术有限公司 | Method and system for implementing user terminal switching in microwave turn-on global inter communication system |
| CN101127948B (en) * | 2007-09-19 | 2010-06-09 | 中兴通讯股份有限公司 | A method for pulse billing after switching between offices |
| CN101820604A (en) * | 2010-05-27 | 2010-09-01 | 中兴通讯股份有限公司 | Call proceeding method, device and system |
| CN101064614B (en) * | 2006-04-30 | 2011-04-20 | 华为技术有限公司 | Dual-broadcasting charging method in microwave access global intercommunication system |
| CN102149151A (en) * | 2011-01-26 | 2011-08-10 | 中兴通讯股份有限公司 | Switching method and base station controller (BSC) |
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2002
- 2002-10-14 CN CNA02145812XA patent/CN1490965A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426916C (en) * | 2004-05-10 | 2008-10-15 | 华为技术有限公司 | Implementing method for charging in switching time in mobile communication system |
| CN100384188C (en) * | 2005-02-05 | 2008-04-23 | 华为技术有限公司 | Method and system for realizing bidirectional alternative operation of circuit field and group field |
| CN100459505C (en) * | 2005-10-27 | 2009-02-04 | 华为技术有限公司 | Method and system for implementing user terminal switching in microwave turn-on global inter communication system |
| CN101064614B (en) * | 2006-04-30 | 2011-04-20 | 华为技术有限公司 | Dual-broadcasting charging method in microwave access global intercommunication system |
| CN101127948B (en) * | 2007-09-19 | 2010-06-09 | 中兴通讯股份有限公司 | A method for pulse billing after switching between offices |
| CN101820604A (en) * | 2010-05-27 | 2010-09-01 | 中兴通讯股份有限公司 | Call proceeding method, device and system |
| CN102149151A (en) * | 2011-01-26 | 2011-08-10 | 中兴通讯股份有限公司 | Switching method and base station controller (BSC) |
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