CN102045798B - Switching method, system and device - Google Patents
Switching method, system and device Download PDFInfo
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- CN102045798B CN102045798B CN 201110004960 CN201110004960A CN102045798B CN 102045798 B CN102045798 B CN 102045798B CN 201110004960 CN201110004960 CN 201110004960 CN 201110004960 A CN201110004960 A CN 201110004960A CN 102045798 B CN102045798 B CN 102045798B
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Abstract
The invention relates to the technical field of wireless communication, in particular to a switching method, a switching system and a switching device, which are used for enabling an LIPA (local IP access) connection to support mobility. The embodiment of the invention is characterized in that when determining a terminal is required to be switched or the terminal has an LIPA connection, a source base station sends a message including the information of a target base station; after receiving the message including the information of the target base station and determining that the base station corresponding to the information of the target base station is connected with a gateway, the gateway does not release the LIPA connection, and sends a notification message; and after receiving the notification message, the source base station performs switching operations. After the target base station is connected with the gateway, as the gateway does not release the LIPA connection, the LIPA connection supports mobility, therefore, the LIPA connection has good service continuity, and has no influence on other devices in a core network, thus being beneficial to reducing the costs for equipment upgrades of the operators.
Description
Technical field
The present invention relates to wireless communication technology field, particularly a kind of method of switching, system and equipment.
Background technology
LIPA (Local IPAccess, local IP access) be that a kind of permission terminal is by (evolved) Home eNodeB (H (e) NB, Home (evolved) NodeB) be linked into the technology of the local network related with this Home eNodeB, local network comprises home network, enterprise network etc.Terminal is by local gateway (LocalGateway, LGW) be linked into local network, in 10 stages of 3GPP Release, local gateway and Home eNodeB realize at same physical entity, and local gateway can be realized at different physical entities from Home eNodeB after R10.
LIPA control:
Because the access limited features (only allowing the kinsfolk to access such as home network) of Home eNodeB and local network, network need to carry out access control to the terminal of access to family base station and local network:
The Home eNodeB access control judges namely also whether terminal has authority to pass through certain Home eNodeB access network; The local network access control judges namely also whether terminal has authority to pass through certain Home eNodeB request access particular home network, and the local network access control is carried out on the basis of Home eNodeB access control success.
Above-mentioned two steps operation is all carried out based on subscription data by core network control node.
LIPA under the handoff scenario connects processing:
3GPP (3rd Generation Partnership Project, 3G (Third Generation) Moblie standardization body) R10 (version) version is not supported the mobility that LIPA connects, when shifting out the home base station cells that activates LIPA connection place, terminal need deexcitation LIPA to connect, concrete scheme is: Home eNodeB is notified local gateway before switching, initiate to connect deactivation process by local gateway and discharge the LIPA connection, Home eNodeB was initiated handoff procedure again after release was finished.
Present local gateway and Home eNodeB close to be established under the scene, and mobility is not supported in the LIPA connection, connects in case the local gateway that switches just needs to discharge LIPA.And under local gateway and Home eNodeB separation scene, need LIPA to connect and support mobility.
In sum, mobility is not supported in present LIPA connection.
Summary of the invention
A kind of method of switching, system and equipment that the embodiment of the invention provides are with supporting mobility so that LIPA connects.
A kind of method of switching that the embodiment of the invention provides comprises:
Gateway is after receiving the message that comprises target BS information that source base station sends, judge whether base station corresponding to described target BS sign is connected with described gateway, to be source base station need to switch and the transmission when LIPA connection is arranged of described terminal in definite terminal the wherein said message that comprises target BS information;
Described gateway does not discharge local IP access LIPA and connects after determining base station corresponding to described target BS information and described gateway is connected, and sends a notification message to described source base station, is used to indicate described source base station and carries out handover operation.
The method that the another kind that the embodiment of the invention provides switches comprises:
Source base station needs to switch in definite terminal, and described terminal sends the message that comprises the target BS sign when having LIPA to connect to gateway;
Described source base station carries out handover operation behind the notification message of receiving from described gateway.
A kind of equipment that switches that the embodiment of the invention provides comprises:
Judge module, be used for after receiving the message that comprises target BS information that source base station sends, judge base station corresponding to described target BS sign whether with described equipment connection, to be source base station need to switch and the transmission when having LIPA to connect of described terminal in definite terminal the wherein said message that comprises target BS information;
Notification module is used for not discharging LIPA and connecting after determining described target BS information corresponding base station and described equipment connection, sends a notification message to described source base station, is used to indicate described source base station and carries out handover operation.
The equipment that the another kind that the embodiment of the invention provides switches comprises:
Sending module is used for needing to switch in definite terminal, and described terminal is when having LIPA to connect, and sends to gateway to comprise the message that target BS identifies;
Handover module is used for carrying out handover operation behind the notification message of receiving from described gateway.
A kind of system of switching that the embodiment of the invention provides comprises:
The base station is used for needing to switch in definite terminal, and described terminal is when having LIPA to connect, and sends to comprise the message that target BS identifies, and after notified message, carries out handover operation;
Gateway, be used for after receiving the message that comprises target BS information, judge whether base station corresponding to described target BS sign is connected with described gateway, after determining base station corresponding to described target BS information and described gateway being connected, do not discharge LIPA and connect, and send a notification message.
Since gateway target BS with do not discharge LIPA after self is connected and connect support mobility so that LIPA connects, thereby have preferably business continuance that the miscellaneous equipment in the core net is not had to affect, be conducive to reduce the device upgrade cost of operator.
Description of drawings
Fig. 1 is the system configuration schematic diagram that the embodiment of the invention is switched;
Fig. 2 is the structural representation of embodiment of the invention gateway;
Fig. 3 is the structural representation of embodiment of the invention base station;
Fig. 4 is the method flow schematic diagram that embodiment of the invention gateway informing base station switches;
Fig. 5 is the method flow schematic diagram that switch embodiment of the invention base station;
Fig. 6 is the method flow schematic diagram that the embodiment of the invention is switched.
Embodiment
Embodiment of the invention source base station is determining that terminal need to be switched and terminal sends the message that comprises target BS information when having LIPA to connect; Gateway is being received the message that comprises target BS information, and base station corresponding to definite target BS information do not discharge LIPA and connect, and send a notification message with after gateway is connected; Source base station carries out handover operation after notified message.Since gateway target BS with do not discharge LIPA after self is connected and connect so that LIPA connection support mobility.
Further, the scheme of the embodiment of the invention can also solve source base station, target BS is connected to different local gateways, but terminal has in the signatory situation, existing Access Control Technique is judged when not enough problem and local gateway set up separately that LIPA connects under the handoff scenario and can not be kept successional problem, and the scheme of the embodiment of the invention can be advantageously applied to the scene of X2 HO (being that X2 switches a kind of switching that refers between the base station X2 interface be arranged and occur).
In the declarative procedure below, implement to describe from the cooperation of base station side and gateway side first, describe from the enforcement of base station side and gateway side respectively at last, but this does not also mean that the two must cooperate enforcement, in fact, when base station side and gateway side separate when implementing, also solved respectively in base station side, the existing problem of gateway side, when just the two is combined with, can obtain better technique effect.
As shown in Figure 1, the system switched of the embodiment of the invention comprises: base station 10 and gateway 20.
Base station 10 is used for needing to switch in definite terminal, and terminal is when having LIPA to connect, and sends to comprise the message that target BS identifies, and carries out handover operation after receiving from the notification message of gateway 20.
Wherein, target BS information can be that Base Station Identification, CSG (Closed Subscriber Group, closed user group) sign wait the information that can determine the base station.
In force, the base station information set can be set, base station corresponding to each base station information in the base station information set is the base station that is connected with gateway 20.The base station information set can be by manually configuration; Can also automatically be configured by gateway 20, such as the base station information of gateway 20 these base stations of record after connecting in the base station, the base station information of gateway 20 these base stations of deletion after the base station disconnects.
Accordingly, gateway 20 judges when whether base station corresponding to target BS sign is connected with gateway 20, and check in the base station information set whether the target BS information of receiving is arranged, if having, then definite base station corresponding to target BS information is connected with gateway 20; Otherwise, determine that base station corresponding to target BS information is not connected with gateway 20.
The base station information set can be pre-configured in gateway 20; Can also obtain to management system.
Except aforesaid way, after gateway 20 is received the information of source base station, can also to management system obtain target BS whether with the information that is connected is arranged self.
Need to prove, the embodiment of the invention is not limited to above-mentioned dual mode, and other modes that can determine whether the base station is connected with gateway all are suitable for the embodiment of the invention.
Wherein, gateway 20 discharges LIPA and connects, and send a notification message to source base station after determining base station corresponding to target BS information and gateway 20 is not connected.Accordingly, handover operation is carried out in base station 10 after receiving from the notification message of gateway 20.
Further, if be applied in the LTE system, and the LIPA of terminal to connect be unique connection, and gateway 20 determines that needing to discharge LIPA connects, and then can trigger detachment process in discharging the LIPA connection procedure, base station 10 does not need to carry out handover operation like this.Better, detachment process is not triggered in base station 10 in definite LIPA Connection Release process, and after receiving notification message from gateway, carries out handover operation.
Concrete, behind the notification message of receiving from gateway, base station 10 judges in the LIPA Connection Release process whether trigger detachment process, if so, does not then carry out handover operation; Otherwise, carry out handover operation.
Base station 10 judges that the mode that whether triggers detachment process in the LIPA Connection Release process has a lot, and the below enumerates several:
Mode one, base station 10 judge whether to receive the free context command messages from core net after notified message, if so, then determine to trigger detachment process in the dispose procedure; Otherwise, determine not trigger in the dispose procedure detachment process.
Mode two, base station 10 judge whether to receive the deexcitation bearing request message from core net after notified message, if so, then determine not trigger detachment process in the dispose procedure; Otherwise determine to trigger detachment process in the dispose procedure.
Need to prove, the embodiment of the invention is not limited to above-mentioned dual mode, and other can judge the applicable equally embodiment of the invention of the mode that whether triggers detachment process in the LIPA Connection Release process.
Wherein, the gateway of the embodiment of the invention is LGW (Local Gateway, local gateway); The base station of the embodiment of the invention can be the base station of any type, such as Home eNodeB, macro base station, little base station, femto base station etc.
Based on same inventive concept, the method that a kind of base station, gateway also is provided and has switched in the embodiment of the invention, because these equipment are similar to the system of switching with the principle that method is dealt with problems, therefore the enforcement of these equipment and method can referring to the enforcement of system, repeat part and repeat no more.
As shown in Figure 2, the gateway of the embodiment of the invention comprises: judge module 100 and notification module 110.
Notification module 110 is used for not discharging LIPA and connecting after determining target BS information corresponding base station and equipment connection, sends a notification message to source base station, is used to indicate source base station and carries out handover operation.
Wherein, judge module 100 can check in the base station information set whether the target BS information of receiving is arranged, if having, then determines corresponding base station and the equipment connection of target BS information; Otherwise, determine that base station corresponding to target BS information is not connected with equipment.
The equipment of the embodiment of the invention can further include: release module 120.
As shown in Figure 3, the base station of the embodiment of the invention comprises: sending module 200 and handover module 210.
Sending module 200 is used for needing to switch in definite terminal, and terminal is when having LIPA to connect, and sends to gateway to comprise the message that target BS identifies.
Wherein, if be applied in the LTE system, gateway discharges LIPA and connects, and handover module 210 does not trigger detachment process in definite LIPA Connection Release process, and after receiving notification message from gateway, carries out handover operation.
As shown in Figure 4, the method switched of embodiment of the invention gateway informing base station comprises the following steps:
Wherein, target BS information can be the information that Base Station Identification, CSG sign etc. can be determined the base station.
In force, the base station information set can be set, base station corresponding to each base station information in the base station information set is the base station that is connected with gateway.The base station information set can be by manually configuration; Can also automatically be configured by gateway, record the base station information of this base station such as gateway after connecting in the base station, gateway is deleted the base station information of this base station after the base station disconnects.
Accordingly, in the step 401, gateway judges when whether base station corresponding to target BS sign is connected with gateway, and check in the base station information set whether the target BS information of receiving is arranged, if having, then definite base station corresponding to target BS information is connected with gateway; Otherwise, determine that base station corresponding to target BS information is not connected with gateway.
In the step 402, gateway discharges LIPA and connects, and send a notification message to source base station after determining base station corresponding to target BS information and gateway is not connected.
As shown in Figure 5, the method switched of embodiment of the invention base station comprises the following steps:
If be applied in the LTE system, and the LIPA of terminal to connect be unique connection, and gateway determines that needing to discharge LIPA connects,, then in discharging the LIPA connection procedure, can trigger detachment process, the base station does not need to carry out handover operation like this.
Better, in the step 502, detachment process is not triggered in the base station in definite LIPA Connection Release process, and after receiving notification message from gateway, carries out handover operation.
Concrete, the base station can judge in the LIPA Connection Release process whether trigger detachment process after receiving from the notification message of gateway, if so, then do not carry out handover operation; Otherwise, carry out handover operation.
The base station judges that the mode that whether triggers detachment process in the LIPA Connection Release process has a lot, and the below enumerates several:
Mode one, base station judge whether to receive the free context command messages from core net after notified message, if so, then determine to trigger detachment process in the dispose procedure; Otherwise, determine not trigger in the dispose procedure detachment process.
Mode two, base station judge whether to receive the deexcitation bearing request message from core net after notified message, if so, then determine not trigger detachment process in the dispose procedure; Otherwise determine to trigger detachment process in the dispose procedure.
Need to prove, the embodiment of the invention is not limited to above-mentioned dual mode, and other can judge the applicable equally embodiment of the invention of the mode that whether triggers detachment process in the LIPA Connection Release process.
Wherein, Fig. 4 and Fig. 5 can synthesize a flow process, form a new method of switching, i.e. first execution in step 401, again execution in step 501 and step 502, at last execution in step 402.
As shown in Figure 6, the method switched of the embodiment of the invention comprises the following steps:
Step 601, base station need to switch in definite terminal, and terminal sends the message that comprises the target BS sign when having LIPA to connect.
Handover operation is carried out in step 605, base station after notified message, and process ends.
Handover operation is not carried out in step 607, base station, and process ends.
Handover operation is carried out in step 608, base station, and process ends.
Wherein, the base station does not need to know whether gateway discharges LIPA and connect, as long as receive the notification message of gateway, switches and gets final product; In the LTE system, also need to judge whether to have occured attachment removal in the time of the notified message in base station, if so, then do not need to switch.
The below enumerates several scenes the solution of the present invention is further described.
Scene one, be applied in LTE (Long Term Evolution, the Long Term Evolution) network, source base station is Home eNodeB, and target BS is macro base station, and it is not unique connection that the LIPA of terminal connects.
Home eNodeB needs to switch in definite terminal, and terminal sends the message that comprises the target BS sign when having LIPA to connect to local gateway;
Local gateway determines that according to the target BS sign corresponding target BS is not connected with self, discharges LIPA and connects;
After the LIPA Connection Release was finished, local gateway returned notification message to Home eNodeB;
After the notified message of Home eNodeB, according to the deexcitation bearing request message from core net, determine not trigger in the dispose procedure detachment process, initiate the S1 handoff procedure.
Scene two, be applied in the LTE network, source base station is Home eNodeB A, and target BS A is connected to another Home eNodeB B of same local gateway, between Home eNodeB A and the Home eNodeB B X2 interface is arranged.
Home eNodeB needs to switch in definite terminal, and terminal sends the message that comprises the target BS sign when having LIPA to connect to local gateway;
Local gateway is determined according to target BS sign that corresponding target BS has with self and is connected, directly returns notification message;
After the notified message of Home eNodeB, initiate the X2 handoff procedure.
Scene three, be applied in the LTE network, source base station is Home eNodeB, and target BS is macro base station.It is unique connection that the LIPA of terminal connects.
Home eNodeB needs to switch in definite terminal, and terminal sends the message that comprises the target BS sign when having LIPA to connect to local gateway;
Local gateway determines that according to the target BS sign corresponding target BS is not connected with self, discharges LIPA and connects;
After the LIPA Connection Release was finished, local gateway returned notification message to Home eNodeB;
Because it is last connection of this terminal that LIPA connects, then the LIPA Connection Release will trigger core net controlled entity MME (Mobility Management Entity, Mobility Management Entity) and initiate detachment process;
After the notified message of Home eNodeB, determine to have triggered detachment process by the context release command from core net, do not initiate the S1 handoff procedure.
Scene four, be applied in the 3G network, source base station is Home eNodeB, and target BS is macro base station.
Home eNodeB needs to switch in definite terminal, and terminal sends the message that comprises the target BS sign when having LIPA to connect to local gateway;
Local gateway determines that according to target BS sign corresponding target BS is not connected with self, release LIPA connection, and after the LIPA Connection Release finished, local gateway returned notification message to Home eNodeB;
After the notified message of Home eNodeB, initiate handoff procedure.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, complete implement software example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form of the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device producing a machine, so that the instruction of carrying out by the processor of computer or other programmable data processing device produces the device that is used for realizing in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, so that the instruction that is stored in this computer-readable memory produces the manufacture that comprises command device, this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, so that carry out the sequence of operations step producing computer implemented processing at computer or other programmable devices, thereby be provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame in the instruction that computer or other programmable devices are carried out.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative concept of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Since gateway target BS with do not discharge LIPA after self is connected and connect support mobility so that LIPA connects, thereby have preferably business continuance that the miscellaneous equipment in the core net is not had to affect, be conducive to reduce the device upgrade cost of operator.
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 (13)
1. a method of switching is characterized in that, the method comprises:
Gateway is after receiving the message that comprises target BS information that source base station sends, judge whether base station corresponding to described target BS sign is connected with described gateway, to be source base station need to switch and the transmission when LIPA connection is arranged of described terminal in definite terminal the wherein said message that comprises target BS information;
Described gateway does not discharge local IP access LIPA and connects after determining base station corresponding to described target BS information and described gateway is connected, and sends a notification message to described source base station, is used to indicate described source base station and carries out handover operation.
2. the method for claim 1 is characterized in that, described gateway is judged whether base station corresponding to described target BS sign be connected with described gateway and comprised:
Described gateway checks in the base station information set whether the target BS information of receiving is arranged, if having, determines that then base station corresponding to described target BS information is connected with described gateway; Otherwise, determine that base station corresponding to described target BS information is not connected with described gateway.
3. method as claimed in claim 1 or 2 is characterized in that, described gateway judges that base station corresponding to described target BS information also comprises after whether being connected with described gateway:
Described gateway discharges LIPA and connects, and send a notification message to described source base station after determining base station corresponding to described target BS information and described gateway is not connected, and is used to indicate described source base station and carries out handover operation.
4. a method of switching is characterized in that, the method comprises:
Source base station needs to switch in definite terminal, and described terminal sends the message that comprises the target BS sign when having local IP access LIPA to connect to gateway;
Described source base station carries out handover operation behind the notification message of receiving from described gateway;
Wherein, gateway judges whether base station corresponding to target BS sign is connected with gateway, after determining base station corresponding to target BS information and gateway being connected after the message that comprises the target BS sign of receiving from source base station, do not discharge LIPA and connect, and send a notification message to source base station.
5. method as claimed in claim 4 is characterized in that, if be applied in the Long Term Evolution LTE system, and gateway discharges the LIPA connection;
Described source base station carries out also comprising before the handover operation:
Described source base station is determined not trigger detachment process in the LIPA Connection Release process.
6. an equipment that switches is characterized in that, this equipment comprises:
Judge module, be used for after receiving the message that comprises target BS information that source base station sends, judge base station corresponding to described target BS sign whether with described equipment connection, to be source base station need to switch and the transmission when having LIPA to connect of described terminal in definite terminal the wherein said message that comprises target BS information;
Notification module is used for not discharging LIPA and connecting after determining described target BS information corresponding base station and described equipment connection, sends a notification message to described source base station, is used to indicate described source base station and carries out handover operation.
7. equipment as claimed in claim 6 is characterized in that, described judge module specifically is used for:
Check in the base station information set whether the target BS information of receiving is arranged, if having, then determine corresponding base station and the described equipment connection of described target BS information; Otherwise, determine that base station corresponding to described target BS information is not connected with described equipment.
8. such as claim 6 or 7 described equipment, it is characterized in that, described equipment also comprises:
Release module is used for discharging LIPA and connecting, and send a notification message to described source base station after determining base station corresponding to described target BS information and described equipment is not connected, and is used to indicate described source base station and carries out handover operation.
9. an equipment that switches is characterized in that, this equipment comprises:
Sending module is used for needing to switch in definite terminal, and described terminal is when having local IP access LIPA to connect, and sends to gateway to comprise the message that target BS identifies;
Handover module is used for carrying out handover operation behind the notification message of receiving from described gateway;
Wherein, gateway judges whether base station corresponding to target BS sign is connected with gateway, after determining base station corresponding to target BS information and gateway being connected after the message that comprises the target BS sign of receiving from source base station, do not discharge LIPA and connect, and send a notification message to source base station.
10. equipment as claimed in claim 9 is characterized in that, if be applied in the LTE system, described handover module also is used for:
Connect if gateway discharges LIPA, in definite LIPA Connection Release process, do not trigger detachment process, and after receiving notification message from described gateway, carry out handover operation.
11. a system of switching is characterized in that, this system comprises:
The base station is used for needing to switch in definite terminal, and described terminal is when having LIPA to connect, and sends to comprise the message that target BS identifies, and after notified message, carries out handover operation;
Gateway, be used for after receiving the message that comprises target BS information, judge whether base station corresponding to described target BS sign is connected with described gateway, after determining base station corresponding to described target BS information and described gateway being connected, do not discharge LIPA and connect, and send a notification message.
12. system as claimed in claim 11 is characterized in that, described gateway also is used for:
After determining base station corresponding to described target BS information and described equipment is not connected, discharge LIPA and connect, and send a notification message.
13. system as claimed in claim 12 is characterized in that, if be applied in the LTE system, described base station specifically is used for:
In definite LIPA Connection Release process, do not trigger detachment process, and after receiving notification message from described gateway, carry out handover operation.
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| CN 201110004960 CN102045798B (en) | 2011-01-11 | 2011-01-11 | Switching method, system and device |
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| CN 201110004960 CN102045798B (en) | 2011-01-11 | 2011-01-11 | Switching method, system and device |
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| CN102781055B (en) * | 2011-05-11 | 2017-04-12 | 华为技术有限公司 | Data transmission method, radio access network device and communication system |
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| CN102202364B (en) * | 2011-06-08 | 2013-09-04 | 电信科学技术研究院 | Method, system and equipment for controlling LIPA bearing access |
| CN102202365A (en) * | 2011-06-14 | 2011-09-28 | 电信科学技术研究院 | Method and device for switching CSG (Closed Subscribe Group) cell based on X2 interface |
| CN103621142A (en) * | 2011-06-28 | 2014-03-05 | 京瓷株式会社 | Communication control method and home base station |
| CN109005602B (en) * | 2011-07-05 | 2021-03-02 | 北京三星通信技术研究有限公司 | Method for avoiding switching failure |
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| CN103167571B (en) * | 2011-12-09 | 2017-07-21 | 华为终端有限公司 | Switching method and mobile management device, home access device |
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| CN103517455A (en) * | 2012-06-29 | 2014-01-15 | 华为终端有限公司 | Method and device for service release |
| CN105792292B (en) * | 2014-12-26 | 2021-03-30 | 中兴通讯股份有限公司 | Base station switching method, system and related device |
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| CN102045798A (en) | 2011-05-04 |
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