CN101420732A - Soft switching method and system for cross base station controller, target base station controller - Google Patents
Soft switching method and system for cross base station controller, target base station controller Download PDFInfo
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- CN101420732A CN101420732A CNA2008101802377A CN200810180237A CN101420732A CN 101420732 A CN101420732 A CN 101420732A CN A2008101802377 A CNA2008101802377 A CN A2008101802377A CN 200810180237 A CN200810180237 A CN 200810180237A CN 101420732 A CN101420732 A CN 101420732A
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Abstract
The invention discloses a soft handoff method of controllers crossing base stations, a system and a target base station controller (BSC), wherein, the method comprises the following steps: the target base station controller receives a handoff message from a source base station controller, wherein, the handoff message is used for instructing the handoff of a terminal from the source base station controller to the target base station controller; the target base station controller allocates distribution processing resources to a distribution processing unit in response to the handoff message; the target base station controller connects the distribution processing unit to the distribution processing unit of the source base station controller to establish a handoff link. The technical scheme of the invention can help realize the handoff of a group service terminal between different BSCs, improve the efficiency of the handoff of the group service terminal between different BSCs, and save resources consumed by the handoff.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of soft handover method of cross base station controller and system, target base station controller.
Background technology
Reaching its maturity and develop the soft handoff scheme of CDMA group system along with code division multiple access (Code Division Multiple Access abbreviates CDMA as) trunking communication technology.
In the present cluster communication system, because the multi-user's of group service characteristic, make group service, particularly conventional group calling type group service can not support the soft handover of the cross base station controller (Base Station Controller abbreviates BSC as) of unique user.The normal speech business be can support unique user stride the BSC soft handover, wherein, the switching of voice is finished by the guiding of BSC service processes, and the distributing processing unit (Selection/DistributionUnit abbreviate SDU) of the sub-district on sub-district on the target BS C and the source BSC on can common source BSC.
Because each cluster service process is served a plurality of colony terminals simultaneously, the residing state of each colony terminal is also inequality, simultaneously, if be the provide support soft handover of striding BSC of unique user of each colony terminal, the different conditions and each terminal information that need each terminal of record, for the large-scale groups that comprises a plurality of terminals (for example this group comprises 100 users), terminal can not adopt this soft handoff when switching between different B SC.
Summary of the invention
Consider when the group service terminal that exists in the correlation technique is switched between different B SC, can not adopt the problem of the soft handoff of striding BSC of supporting unique user and propose the present invention, for this reason, main purpose of the present invention is to provide a kind of BSC of striding soft handover method and system, target base station controller, to address the above problem.
A kind of soft switching system of cross base station controller is provided according to an aspect of the present invention.
Soft switching system according to cross base station controller of the present invention comprises source base station controller and target base station controller, wherein, target base station controller comprises: distributing processing unit is used for the Business Stream that receives and the signaling flow of target base station controller are carried out separating treatment.
Further, above-mentioned target base station controller also comprises: transmitting element, and the Business Stream and the signaling flow that are used for receiving send to the source base station controller; Processing unit is used for that distributing processing unit is carried out the signaling flow that separating treatment obtains and handles.
According to another aspect of the present invention, provide a kind of target base station controller.
Target base station controller according to the present invention comprises: distributing processing unit is used for the Business Stream that receives and the signaling flow of target base station controller are carried out separating treatment.
Further, this target controller also comprises: transmitting element, and the Business Stream and the signaling flow that are used for receiving send to the source base station controller; Processing unit is used for that distributing processing unit is carried out the signaling flow that separating treatment obtains and handles.
According to a further aspect of the invention, provide a kind of soft handover method of cross base station controller, this method is used to realize the switching of source base station controller to the target base station controller interconnected with it.
Soft handover method according to cross base station controller of the present invention comprises: target base station controller receives the switching message from the source base station controller, wherein, switching message is used for indicating terminal and switches to target base station controller from the source base station controller, one of below wherein, switching message comprises at least: the sign of the sign of the Target cell of switching, source base station controller; In response to switching message, target base station controller distributes the distribution processor resource for its distributing processing unit; Target base station controller is set up handoff links with the distributing processing unit that distributing processing unit is connected to the source base station controller.
Wherein, before target base station controller receive to switch message, method also comprised: source base station is according to the pilot strength measurement report of terminal, determines that terminal need switch, and sends to target base station controller and to switch message.
Preferably, target base station controller distribution processor resource that the distribution processor resource of setting up is connected to the source base station controller is set up handoff links and comprised: target base station controller is connected to the up link of the distribution processor resource set up the distribution processor resource of source base station controller.
Further, after setting up handoff links, this method also comprises: the source base station controller sends to all terminals that belong to it with the adjacent area assignment message, and all terminals are independently switched between source base station controller and target base station controller according to handoff links.
By above-mentioned at least one technical scheme of the present invention, by in target BS C, setting up SDU, between the SDU of the SDU of target BS C and source BSC, set up handoff links, thereby solved the problem that the group service terminal can not be switched in the prior art between different B SC, realization group service terminal is switched between different B SC, improved the efficient that the group service terminal is switched between different B SC, saved and switch the resource that is consumed.
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 structural framing figure according to the CDMA group system of correlation technique;
Fig. 2 is the structural framing figure that strides the BSC soft switching system of system according to the invention embodiment;
Fig. 3 is the structural framing figure of the CDMA group system of system according to the invention embodiment;
Fig. 4 is the flow chart of striding the BSC soft handover method according to the inventive method embodiment;
Fig. 5 is the detailed process flow chart of striding the BSC soft handover method according to the inventive method embodiment.
Embodiment
Functional overview
As mentioned above, the soft switching process of present code division multiple access (CDMA) group system, special in soft switching process at conventional group calling type cluster, when existing the group service terminal between different base station controller (BSC), to switch, can not adopt the problem of the soft handoff of striding BSC of supporting unique user.The present invention is directed to the problems referred to above that exist in the soft switching process of current cluster business, proposed a kind ofly to stride the BSC soft handoff scheme based on normal speech, in this scheme, when target base station controller receives switching message from the source base station controller, target base station controller distributes the distribution processor resource for its distributing processing unit, then, by the distributing processing unit of in target BS C, setting up (SDU), between the SDU of the SDU of target BS C and source BSC, set up handoff links, solved the BSC soft handover problem of striding of multi-user's CDMA cluster communication system.
Under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
For the ease of understanding the embodiment of the invention, before the explanation embodiment of the invention, the structural framing figure of CDMA group system is described in the 1 pair of prior art at first in conjunction with the accompanying drawings, as shown in Figure 1, this system comprises SDU, the target BS C among core net, the source BSC, and there is not SDU among this target BS C, source base station Radio Resource, target BS Radio Resource.
The process of utilizing system shown in Figure 1 that the CDMA terminal is switched is: the current service cell of terminal is the sub-district among the BSC of source, and source BSC utilizes the source base station Radio Resource to provide service for terminal.Terminal is carried out the sub-district test, if the PN intensity of signal that terminal is found certain sub-district among its target BS C that receives is during greater than the handoff threshold value, can send to source BSC and switch message, source BSC carries out switch decision after receiving this switching message, and whether decision needs to switch, and switches if desired, then set up corresponding channel resources, and this channel resource sent to terminal, terminal handover success, target BS C utilize the target BS Radio Resource to provide service for terminal.
Describe the embodiment of the embodiment of the invention in detail below in conjunction with accompanying drawing.
System embodiment
According to the embodiment of the invention, a kind of BSC of striding soft switching system is provided, this system comprises source BSC and target BS C, wherein, comprises distributing processing unit among the BSC of source.
According to striding in the BSC soft switching system of the embodiment of the invention, target BS C comprises distributing processing unit, and this distributing processing unit is used for the Business Stream that receives of described target BS C and signaling flow are carried out separating treatment.
Fig. 2 shows the preferred structure block diagram of striding the BSC soft switching system according to the embodiment of the invention, and as shown in Figure 2, the target BS C of this system also comprises transmitting element 20 and processing unit 30 except that comprising distributing processing unit 10.
Transmitting element 20, the Business Stream and the signaling flow that are used for receiving send to source BSC; Processing unit 30 is used for that distributing processing unit 10 is carried out the signaling flow that separating treatment obtains and handles.
The process of utilizing system shown in Figure 2 that the CDMA terminal is switched is: source BSC receives the reverse pilot intensity report of terminal, carry the sign of the Target cell that terminal need switch in the report, source BSC judges need carry out the switching of target side, find that simultaneously this BSC and target BS C are interconnected, then notification target BSC carries out the soft handover processing.Target BS C receives after this switching message, discovery oneself itself is the treatment progress of this trunked call not, then begin to set up the hand-off process process, set up distributing processing unit 10, and be that distributing processing unit 10 distributes the SDU resource, and the up link of distributing processing unit 10 is connected to source SDU, be not connected to core net, after this, Business Stream and signaling flow that transmitting element 20 can receive target BS C directly send to source BSC, and the Business Stream and the signaling flow that soon do not carry out separating treatment send to source BSC; Processing unit 30 can be handled separately distributing processing unit 10 isolated signaling flows.
Stride the BSC soft switching system by what the embodiment of the invention provided, can between the SDU of the SDU of target BS C and source BSC, set up handoff links, thereby realization group service terminal is switched between different B SC, improved the efficient that the group service terminal is switched between different B SC, saved and switch the resource that is consumed.
Fig. 3 is the concrete structure block diagram of striding the BSC soft switching system according to the embodiment of the invention, as can be seen, the method that the embodiment of the invention provides is with the difference of the switching framework (being system shown in Figure 1) of present normal speech: the SDU that oneself is arranged on the target BS C, because the data processing Dispatching Unit module of oneself is arranged on the target BS C, make and stride the master control point of the soft handover between BSC not only on the BSC of source, SDU on the target BS C can manage the disposition of all Radio Resources under this BSC voluntarily and manage CDMA cluster user terminal under this BSC, for example from the switching again of target oneself and the terminal management under the target, this framework mode can be finished the BSC soft handover of striding of group service and manage so that source BSC and target BS C all can manage the terminal of resource under this BSC separately independently.
For the SDU of source BSC, this SDU does not also know that the SDU on the target BS C has finished the work of treatment of a plurality of wireless link channel, but directly the wireless link channel on the whole target BS C is equivalent to the common wireless link channel of the SDU of source BSC.
As can be seen, the major advantage of the system that the embodiment of the invention provides is that target BS C has the SDU of oneself, and the control process of oneself just can be arranged, from the Radio Resource of line pipe reason target and the cluster user terminal under this BSC.
Device embodiment
According to the embodiment of the invention, provide a kind of target BS C.
Target BS C according to the present invention comprises: distributing processing unit is used for Business Stream that receives and the signaling flow of target BS C are carried out separating treatment; Transmitting element, the Business Stream and the signaling flow that are used for receiving send to source BSC; Processing unit is used for that distributing processing unit is carried out the signaling flow that separating treatment obtains and handles.
Need to prove that the structural framing of this target BS C and the function of each module are identical with the structural framing of target BS C and the function of each module in striding the BSC soft switching system, repeat no more here.
Method embodiment
According to the embodiment of the invention, provide a kind of BSC of striding soft handover method.
Fig. 4 is the flow chart of striding the BSC soft handover method according to the embodiment of the invention, need to prove, for convenience of description, in Fig. 4, illustrated and described the technical scheme of method embodiment of the present invention, can in computer system, carry out such as a set of computer-executable instructions in the step shown in Fig. 4 with the form of step.Though figure 4 illustrates logical order, in some cases, can carry out step shown or that describe with the order that is different from herein.As shown in Figure 4, this method may further comprise the steps (step S402 is to step S406).
Step S402, source BSC is according to the pilot strength measurement report of terminal, determine that terminal need switch, and to target BS C transmission switching message, target BS C receives this switching message, wherein, switching message is used for indicating terminal and switches to target BS C from source BSC, and this switching message comprises: the sign of the sign of the Target cell of switching and source BSC.
Step S404, in response to above-mentioned switching message, target BS C distributes the distribution processor resource for its distributing processing unit.
Step S406, target BS C sets up handoff links with the distributing processing unit that distributing processing unit is connected to source BSC, particularly, target BS C is connected to the up link of the distribution processor resource of foundation the distribution processor resource of source BSC, afterwards, source BSC can send to the adjacent area assignment message all terminals that belong to it, and all terminals are independently switched between source BSC and target BS C according to handoff links.
In the specific embodiment process, source BSC receives the reverse pilot intensity report of terminal, carry the sign of the Target cell that terminal need switch in the report, source BSC judges need carry out the switching of target side, find that simultaneously this BSC and target BS C are interconnected, then notification target BSC carries out the soft handover processing.
Target BS C receives after this switching message, discovery oneself itself is the treatment progress of this trunked call not, then begin to set up the hand-off process process, the process of setting up is set up the same with common group calling, difference is the up link of target BS C SDU is not connected to core net, but is connected to the SDU of source BSC.
Because the CDMA colony terminal of PTT can unify to adopt terminal independently to switch in the prior art, what the PTT cdma system of the embodiment of the invention adopted is autonomous switching, carry out before the soft handover, the base station can pre-configured each sub-district neighbor cell, after base station resource foundation is finished, bring terminal with the resource of all adjacent areas by the adjacent area assignment message, the adjacent area does not have that resource is changeable also to bring terminal in the assignment message of adjacent area, when terminal searching is to the enough strong pilot tone of Lin Qu so, just can finish autonomous the switching.
The technical scheme that provides by the embodiment of the invention, by in target BS C, setting up SDU, between the SDU of the SDU of target BS C and source BSC, set up handoff links, realization group service terminal is switched between different B SC, improved the efficient that the group service terminal is switched between different B SC, saved and switch the resource that is consumed.
Fig. 5 is the detailed process flow chart of striding the BSC soft handover method according to the inventive method embodiment, and as shown in Figure 5, this method may further comprise the steps (step S501 is to step S506).
Step S501, source BSC receives the terminal pilot strength measurement report, and this measurement report carries the sign of Target cell, finds that this demanding terminal switches to the Target cell under the target BS C from the cell-of-origin under the BSC of source.
It is interconnected that step S502, source BSC find that target BS C and this BSC have, and decision starts soft handoff procedure between BSC.
Step S503, source BSC send to switch message to target BS C, carry the sign that requires switching cell and the sign (corresponding to above-mentioned step S402) of source BSC in this switching message.
Step S504, target BS C receive switching message, at first set up treatment progress, and distribute SDU resource (corresponding to above-mentioned step S404) on target BS C.
Step S505, target BS C is connected to the up link of its SDU the SDU of source BSC, with this up link as the wireless links passage between source BSC and target BS C, this wireless link channel is used for Business Stream and signaling flow that the SDU with target BS C receives and directly sends to source BSC, the Business Stream and the signaling flow that soon do not carry out separating treatment send to source BSC, and target BS C handles the signaling flow (corresponding to above-mentioned step S406) that its SDU separates voluntarily simultaneously.
Step S506, target BS C sends a notification message to source BSC, and notification source BSC soft switching process is finished.
After the processing of execution in step S506, source BSC can send the adjacent area assignment message to all terminals that belong to it, and all terminals are independently switched between source BSC and target BS C according to the wireless link channel of setting up.
As mentioned above, by means of BSC soft handover method and/or the system of striding provided by the invention, by in target BS C, setting up SDU, between the SDU of the SDU of target BS C and source BSC, set up handoff links, realization group service terminal is switched between different B SC, improved the efficient that the group service terminal is switched between different B SC, saved and switch the resource that is consumed.
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 (9)
1. the soft switching system of a cross base station controller, described system comprises source base station controller and target base station controller, it is characterized in that, described target base station controller comprises:
Distributing processing unit is used for the Business Stream that receives and the signaling flow of described target base station controller are carried out separating treatment.
2. system according to claim 1 is characterized in that, described target base station controller also comprises:
Transmitting element, the described Business Stream and the signaling flow that are used for receiving send to described source base station controller;
Processing unit is used for that described distributing processing unit is carried out the described signaling flow that separating treatment obtains and handles.
3. a target base station controller is characterized in that, comprising:
Distributing processing unit is used for the Business Stream that receives and the signaling flow of described target base station controller are carried out separating treatment.
4. target base station controller according to claim 3 is characterized in that, described target controller also comprises:
Transmitting element, the described Business Stream and the signaling flow that are used for receiving send to described source base station controller;
Processing unit is used for that described distributing processing unit is carried out the described signaling flow that separating treatment obtains and handles.
5. the soft handover method of a cross base station controller is used to realize the switching of source base station controller to the target base station controller interconnected with it, it is characterized in that described method comprises:
Described target base station controller receives the switching message from described source base station controller, and wherein, described switching message is used for indicating terminal and switches to described target base station controller from described source base station controller;
In response to described switching message, described target base station controller distributes the distribution processor resource for its distributing processing unit;
Described target base station controller is set up handoff links with the distributing processing unit that described distributing processing unit is connected to described source base station controller.
6. method according to claim 5 is characterized in that, before described target base station controller received described switching message, described method also comprised:
Described source base station is according to the pilot strength measurement report of terminal, determines that described terminal need switch, and sends described switching message to described target base station controller.
7. method according to claim 5 is characterized in that, the distribution processor resource that the described distribution processor resource that described target base station controller will be set up is connected to described source base station controller is set up handoff links and comprised:
The up link of the described distribution processor resource that described target base station controller will be set up is connected to the distribution processor resource of described source base station controller.
8. method according to claim 5 is characterized in that, after setting up described handoff links, described method also comprises:
Described source base station controller sends to all terminals that belong to it with the adjacent area assignment message, and described all terminals are independently switched between described source base station controller and described target base station controller according to described handoff links.
One of 9. according to each described method in the claim 5 to 8, it is characterized in that, below described switching message comprises at least: the sign of the sign of the Target cell of switching, source base station controller.
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| CN2008101802377A CN101420732B (en) | 2008-11-28 | 2008-11-28 | Soft switching method and system for cross base station controller, target base station controller |
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| CN2008101802377A CN101420732B (en) | 2008-11-28 | 2008-11-28 | Soft switching method and system for cross base station controller, target base station controller |
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| CN101420732A true CN101420732A (en) | 2009-04-29 |
| CN101420732B CN101420732B (en) | 2011-01-19 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010142233A1 (en) * | 2009-06-12 | 2010-12-16 | 华为技术有限公司 | Method, device and system for establishing switch link |
| CN102413533A (en) * | 2011-12-26 | 2012-04-11 | 中兴通讯股份有限公司 | BSC (base station controller) interconnection method and device under group call and BSC |
| CN102752815A (en) * | 2012-06-26 | 2012-10-24 | 华为技术有限公司 | Method, controller and system for transmitting logical link control protocol data unit |
| CN110691414A (en) * | 2018-07-05 | 2020-01-14 | 大唐移动通信设备有限公司 | Cell establishing method and device |
| WO2022073491A1 (en) * | 2020-10-10 | 2022-04-14 | 大唐移动通信设备有限公司 | Handover method, apparatus, terminal device, network device, and storage medium |
-
2008
- 2008-11-28 CN CN2008101802377A patent/CN101420732B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010142233A1 (en) * | 2009-06-12 | 2010-12-16 | 华为技术有限公司 | Method, device and system for establishing switch link |
| CN102413533A (en) * | 2011-12-26 | 2012-04-11 | 中兴通讯股份有限公司 | BSC (base station controller) interconnection method and device under group call and BSC |
| CN102413533B (en) * | 2011-12-26 | 2017-11-28 | 中兴通讯股份有限公司 | Group calling lower base station controller interconnected method, device and base station controller |
| CN102752815A (en) * | 2012-06-26 | 2012-10-24 | 华为技术有限公司 | Method, controller and system for transmitting logical link control protocol data unit |
| CN102752815B (en) * | 2012-06-26 | 2015-12-16 | 华为技术有限公司 | Transmit the method for logic link control protocol data cell, controller and system |
| CN110691414A (en) * | 2018-07-05 | 2020-01-14 | 大唐移动通信设备有限公司 | Cell establishing method and device |
| CN110691414B (en) * | 2018-07-05 | 2021-10-29 | 大唐移动通信设备有限公司 | Cell establishing method and device |
| WO2022073491A1 (en) * | 2020-10-10 | 2022-04-14 | 大唐移动通信设备有限公司 | Handover method, apparatus, terminal device, network device, and storage medium |
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| CN101420732B (en) | 2011-01-19 |
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