CN106376037B - Across PLMN switching method, base station and communication system in a kind of base station - Google Patents
Across PLMN switching method, base station and communication system in a kind of base station Download PDFInfo
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- CN106376037B CN106376037B CN201510428543.8A CN201510428543A CN106376037B CN 106376037 B CN106376037 B CN 106376037B CN 201510428543 A CN201510428543 A CN 201510428543A CN 106376037 B CN106376037 B CN 106376037B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
- H04W36/142—Reselecting a network or an air interface over the same radio air interface technology
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Abstract
The embodiment of the invention discloses across PLMN switching methods in a kind of base station, it include: the PLMN negotiation result that base station obtains core net, determine that the network share scene of base station, the network share scene of the base station include that multi-operator core network (MOCN) is shared and gateway core network (GWCN) is shared according to the negotiation result；The measurement report that user equipment (UE) is sent is received, the PLMN of the PLMN of source cell and switching target small area in base station are determined according to the measurement report；When the PLMN difference of the PLMN of the source cell and the switching target small area, across PLMN switching in base station corresponding with the network share scene of the base station is executed.The embodiment of the present invention further simultaneously discloses a kind of base station and communication system.
Description
Technical field
The present invention relates to communications field public land mobile network (PLMN, Public Land Mobile Network) to cut
Change across PLMN switching method, base station and communication system in technology more particularly to a kind of base station.
Background technique
Long term evolution (LTE, Long Term Evolution) is by third generation partner program (3GPP, The 3rd
Generation Partnership Project) Universal Mobile Communication System (UMTS, the Universal that organize to set up
Mobile Telecommunications System) technical standard mobile communication system.Under normal conditions, mobile in LTE
In communication system, a carrier network is also known as PLMN, is divided into core net and access net two parts, wherein core network section
Point is by mobile management entity (MME, Mobility Management Entity), gateway (SGW, Serving
Gateway), packet data gateway (PGW, PDN Gateway) etc. is constituted；Access network nodes by evolved base station (eNodeB,
Evolved Node B) composition, in carrying out PLMN selection/handoff procedure, related network node is MME and eNodeB.
Network share, which refers to, realizes that wireless network is shared between different operators.In 23.251 agreement of 3GPP TS
Define the framework mode of two kinds of network shares, respectively multi-operator core network (MOCN, Multi-Operator Core
Network) technology of sharing and gateway core network (GWCN, Gateway Core Network) technology of sharing.Wherein, such as Fig. 1
Shown, MOCN is that an eNodeB is connected to multiple cores net node, and eNodeB network element is shared between multiple operators, is multiple
Carrier supplying service.As shown in Fig. 2, GWCN is while share of access network and part core net node, not only eNodeB net
Member is shared, and part equipment of the core network (such as MME) is also shared, and is multiple carrier supplying services.
Under the mobility scene under network share, eNodeB will also be propped up in addition to support the switching between same PLMN
It holds between the shared region LTE and the unshared region LTE, share between the region LTE and the region 2G/3G, cutting between different PLMN
It changes.For the switching between different PLMN, i.e., across PLMN switching, present agreement can only be using S1 switches between X2 switching or station between station
Mode.Wherein, X2 switching is the direct transmission that row data and signaling are switched between eNodeB, and S1 switching is that eNodeB passes through
MME comes transfer transmission data and signaling.
In LTE system, under existing network share framework, user equipment (UE, User Equipment) is out of eNodB
The cell of one PLMN1 is switched under the cell scenario of another PLMN2, since eNodB can not be the UE context after change
On information (including the information such as PLMN) synchronized update to corresponding MME, therefore, the prior art be cannot achieve in eNodB across PLMN
Handoff scenario.Moreover, under existing network share scene, when UE reporting measurement reports meet switching condition in eNodB, by
Do not support that causing UE that cannot carry out in time, eNodB is interior to switch initiation UE call drop in eNodB under across PLMN scene in the prior art,
And limit the application scenarios of network share.
Summary of the invention
In order to solve the above technical problems, an embodiment of the present invention is intended to provide across PLMN switching methods, base station in a kind of base station
And communication system, it solves the problems, such as that the prior art does not support across PLMN scene in base station, reduces because of switching across PLMN in base station
The UE call drop of initiation, to improve application scenarios flexibility, popularity and the stability of network share.
The technical scheme of the present invention is realized as follows:
The embodiment of the present invention provides across PLMN switching method in a kind of base station, comprising:
The PLMN negotiation result for obtaining core net, the network share scene of base station is determined according to the negotiation result, described
The network share scene of base station includes that multi-operator core network MOCN is shared and gateway core network G WCN is shared；
Receive the measurement report that user equipment (UE) is sent, according to the measurement report determine in base station the PLMN of source cell and
The PLMN of switching target small area；
When the PLMN difference of the PLMN of the source cell and the switching target small area, execute total with the network of the base station
Enjoy across PLMN switching in the corresponding base station of scene.
Wherein, across PLMN switching in the base station corresponding with the network share scene of the base station, comprising: switching prepares
Stage and handover execution stage.
Wherein, the network share scene of the base station is shared for MOCN, execute MOCN share in base station under scene across
PLMN switching；The handoff preparation phase includes:
The first switching request message is sent to source mobile management entity MME, described in the first switching request message carries
The PLMN information of switching target small area, so that the source MME determines target according to the information of the switching target small area PLMN
MME；
The second switching request message that the target MME is sent is received, the second switching request message carries the mesh
Mark the carrying information of MME creation；
Switching request acknowledgement message is sent to the target MME, the switching request acknowledgement message indicates the switching mesh
Mark cell switches over admission processing and preparation is completed；
The switching command message that the source MME is sent is received, creates the of corresponding switching according to the switching command message
One RRC connection reconfiguration sets message.
Wherein, the network share scene of the base station is shared for MOCN, execute MOCN share in base station under scene across
PLMN switching；The handover execution stage includes:
It sends the first RRC connection reconfiguration and sets message to the UE, the first RRC connection reconfiguration sets message instruction institute
It states UE and executes random access in the switching target small area；
First state Transfer Message is sent to the source MME；
Receive the second state Transfer Message that the target MME is sent；
The first RRC connection reconfiguration for receiving the UE transmission, which is set, completes message, and the first RRC connection reconfiguration sets completion and disappears
Breath indicates that the UE switching is completed；
Handoff notification message is sent to the target MME, is believed the context of the UE according to the handoff notification message
Breath is updated onto the target MME；
The UE context release command that the source MME is sent is received, the UE context release command indicates that the source is small
The release of area's radio resource and UE context release.
Wherein, the network share scene of the base station is shared for GWCN, execute GWCN share in base station under scene across
PLMN switching；The handoff preparation phase includes:
The PLMN information of the switching target small area selected the UE is carried to switching target side cell in base station.
Wherein, the network share scene of the base station is shared for GWCN, execute GWCN share in base station under scene across
PLMN switching；The handover execution stage includes:
It sends the 2nd RRC connection reconfiguration and sets message to the UE, the 2nd RRC connection reconfiguration sets message and indicates the UE
Random access is executed in the switching target small area；
The 2nd RRC connection reconfiguration for receiving the UE transmission, which is set, completes message, and the 2nd RRC connection reconfiguration sets completion and disappears
Breath indicates that the UE switching is completed；
Transmitting path switching request message believes the context of the UE according to the path switching request message to MME
Breath is updated onto the MME；
Receive the path handoff request acknowledgment message that the MME is sent, according to the path handoff request acknowledgment message into
The contextual information of the row UE updates and UE context release.
The embodiment of the present invention also provides a kind of base station, and the base station includes: acquiring unit, receiving unit, switch unit；Its
In,
The acquiring unit determines base station for obtaining the PLMN negotiation result of core net, and according to the negotiation result
Network share scene, wherein the network share scene of the base station includes that multi-operator core network MOCN is shared and gateway
Core network GWCN is shared；
The receiving unit is determined for receiving the measurement report of user equipment (UE) transmission, and according to the measurement report
The PLMN of the PLMN of source cell and switching target small area in base station；
The switch unit, in the source cell PLMN and the switching target small area PLMN difference when, hold
Across PLMN switching in row base station corresponding with the network share scene of the base station.
Wherein, the switch unit executes across PLMN switching in base station corresponding with the network share scene of the base station,
It include: handoff preparation phase and handover execution stage.
Wherein, the base station further include: transmission unit；If the network share scene of the base station is shared for MOCN, in institute
Handoff preparation phase is stated,
The transmission unit, for sending the first switching request message to source mobile management entity MME, first switching
Request message carries the PLMN information of the switching target small area, so that the source MME is according to the switching target small area
PLMN information determines target MME；It is also used to send switching request acknowledgement message to the target MME, the Handover Request Acknowledge
Message indicates that the switching target small area switches over admission processing and preparation is completed；
The receiving unit, the second switching request message sent for receiving the target MME, second switching are asked
Message is asked to carry the carrying information of the target MME creation；It is also used to receive the switching command message that the source MME is sent, root
Message is set according to the first RRC connection reconfiguration that the switching command message creates corresponding switching.
Wherein, if the network share scene of the base station is shared for MOCN, execute MOCN share in base station under scene across
PLMN switching, in the handover execution stage,
The transmission unit sets message to the UE, the first RRC company for sending the first RRC connection reconfiguration
It connects reconfiguration message and indicates that the UE executes random access in the switching target small area；It is also used to send first state transfer to disappear
It ceases to the source MME；It is also used to send handoff notification message to the target MME, it will be described according to the handoff notification message
The contextual information of UE is updated onto the target MME；
The receiving unit, the second state Transfer Message sent for receiving the target MME；It is also used to receive described
The first RRC connection reconfiguration that UE is sent, which is set, completes message, and the first RRC connection reconfiguration, which is set, completes the message instruction UE switching
It is completed；It is also used to receive the release command that the source MME is sent, the release command indicates the source cell radio resource
Release and UE context release.
Wherein, the base station further includes transmission unit；If the network share scene of the base station is shared for GWCN, in institute
Handoff preparation phase is stated,
The PLMN information of the transmission unit, the switching target small area for selecting the UE is carried in base station
Switch target side cell.
Wherein, if the network share scene of the base station is shared for GWCN, in the handover execution stage,
The transmission unit sets message to the UE, the 2nd RRC connection weight for sending the 2nd RRC connection reconfiguration
It configures message and indicates that the UE executes random access in the switching target small area；It is also used to transmitting path switching request message extremely
MME updates the contextual information of the UE onto the MME according to the path switching request message；
The receiving unit, the 2nd RRC connection reconfiguration for receiving the UE transmission, which is set, completes message, and described second
RRC connection reconfiguration sets completion message and indicates that the UE switching is completed；It is also used to receive the path switching request that the MME is sent
Response message, according to the path handoff request acknowledgment message carry out the UE contextual information update and the UE or more
Text release.
The embodiment of the present invention also provides a kind of communication system, and the communication system includes: user equipment, core net and such as
Upper any one described base station.
The embodiment of the invention provides across PLMN switching method, base station and communication systems in a kind of base station, obtain core net
PLMN negotiation result, the network share scene of base station is determined according to the negotiation result, wherein the network share of the base station
Scene includes that MOCN is shared and GWCN is shared；The measurement report that UE is sent is received, determines that base station is endogenous according to the measurement report
The PLMN of the cell and PLMN of switching target small area；The PLMN of the PLMN and the switching target small area that determine the source cell are not
Meanwhile executing across PLMN switching in base station corresponding with the network share scene of the base station.The embodiment of the present invention passes through preparatory
Determine the network share scene of base station, progress and the processing scheme across PLMN switching in the network share scene respective base station, it can
It effectively the UE contextual information after switching across PLMN in base station is updated to MME, and ensure that business continuance, also solve
The prior art of having determined does not support the problem of across PLMN scene in base station, reduces because the UE that switching across PLMN in base station causes falls
Words, to improve application scenarios flexibility, popularity and the stability of network share.
Detailed description of the invention
Fig. 1 is the MOCN framework schematic diagram of network share；
Fig. 2 is the GWCN framework schematic diagram of network share；
Fig. 3 is the PLMN negotiations process schematic diagram of base station and core net under MOCN scene；
Fig. 4 is the PLMN negotiations process schematic diagram of base station and core net under GWCN scene；
Fig. 5 is across PLMN switching method flow diagram one in base station provided in an embodiment of the present invention；
Fig. 6 is across PLMN switching method flow diagram two in base station provided in an embodiment of the present invention；
Fig. 7 is across PLMN hand off signaling flow diagram one in base station provided in an embodiment of the present invention；
Fig. 8 is across PLMN switching method flow diagram three in base station provided in an embodiment of the present invention；
Fig. 9 is that the present invention applies across PLMN hand off signaling flow diagram two in the base station that example provides；
Figure 10 is that the present invention applies the architecture of base station schematic diagram one that example provides；
Figure 11 is that the present invention applies the architecture of base station schematic diagram two that example provides.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
Embodiment one
Setting in base station includes carrier network as PLMN1 and PLMN2, and equipment of the core network includes MME1 and MME2, MME1
Carrier network be PLMN1, the carrier network of MME2 is PLMN2.
As shown in figure 3, the PLMN negotiations process of base station and core net includes: under MOCN scene
Step 101, eNodeB determine transport layer (Transport Layer) establish Flow Control Transmission Protocol (SCTP,
Stream Control Transmission Protocol) coupling, and the coupling is numbered.
Specifically, eNodeB has determined that the SCTP of all MME is coupled information according to transport layer, and the coupling is compiled
Number, wherein the coupling of MME1 can be numbered as AssoID1, the coupling of MME2 is numbered as AssoID2.
Wherein, eNodeB may be simply referred to as eNB；Transport layer is responsible for the one of overall data transmission and Data control pass
Layer；SCTP is to provide the reliable datagram transport protocol on the agreement based on unreliable transmission services, the coupling in SCTP
It is a corresponding relationship between two SCTP endpoint, it contains two SCTP endpoint and including verifying label and transmitting suitable
Protocol state information including the information such as serial number, one coupling can by use the SCTP endpoint of the coupling with transfer address come
Unique identification, coupling that at any time all will not be more than one between two SCTP endpoint.
Step 102, eNB send S1 and establish request message.
Specifically, being on AssoID1 in SCTP coupling, eNB sends S1SETUP REQUEST message to MME1, meanwhile, In
SCTP coupling is on AssoID2, and eNB sends S1SETUP REQUEST message MME2.Wherein, the S1SETUP REQUEST disappears
PLMN is that the Broadcast PLMNs in the overall situation PLMN, Supported Tas fills in PLMN1 in Global eNB ID in breath
And PLMN2.
Step 103, eNB receive S1 and establish response message.
Specifically, being on AssoID1 in SCTP coupling, eNB receives the S1SETUP RESPONSE message that MME1 is replied,
In, the operator list Serve Plmn List serviced in the S1SETUP RESPONSE message carries PLMN1, to MME1's
It is coupled and saves the routing that supported PLMN 1 is used for Cell Broadcast CB and subsequent MME on AssoID1.SCTP coupling be AssoID2 on,
ENB receives the S1SETUP RESPONSE message that MME2 is replied, wherein the operator's column serviced in the S1SETUP RESPONSE
Table Serve Plmn List carries PLMN2, is used for Cell Broadcast CB with after to supported PLMN 2 is saved on the coupling AssoID2 of MME2
The routing of continuous MME.
Step 104, eNB are that UE selects MME according to the PLMN that corresponding SCTP coupling is supported.
Specifically, eNB is that UE selects MME, UE to believe the PLMN of selection according to the PLMN situation that corresponding SCTP coupling is supported
Breath is dealt on corresponding MME, S1 switching request is also sent on the MME of access and incision.
Under MOCN scene, each MME can only support an individual PLMN, therefore, according to base station and core net
The PLMN quantity that each MME is supported in PLMN negotiation result can determine the network share scene of base station.
Embodiment two
Setting base station includes eNB1 and eNB2, include carrier network in eNB1 is PLMN1 and PLMN2, includes in eNB2
Carrier network is PLMN1, and equipment of the core network includes MME, and the carrier network of MME is PLMN1 and PLMN2.
As shown in figure 4, the PLMN negotiations process of base station and core net includes: under GWCN scene
Step 201, eNB determine the SCTP coupling that transport layer is established, and the coupling is numbered.
Specifically, eNB1 determines that the SCTP of MME is coupled information according to self transmission layer, eNB2 is determined according to self transmission layer
The SCTP of MME is coupled information, is AssoID1 for eNB1 and MME coupling number, is for eNB2 and MME coupling number
AssoID2。
Step 202, eNB send S1 and establish request message.
Specifically, being on AssoID1 in SCTP coupling, eNB1 sends S1SETUP REQUEST message to MME, should
PLMN is the Broadcast in the overall situation PLMN, Supported Tas in Global eNB ID in S1SETUP REQUEST message
PLMNs fills in PLMN1 and PLMN2.
Specifically, being on AssoID2 in SCTP coupling, eNB2 sends S1SETUP REQUEST message to MME, should
PLMN is the Broadcast in the overall situation PLMN, Supported Tas in Global eNB ID in S1SETUP REQUEST message
PLMNs fills in PLMN1.
Step 203, eNB receive S1 and establish response message.
Specifically, eNB1 is somebody's turn to do in the S1SETUP RESPONSE message that SCTP coupling is that AssoID1 receives MME reply
The operator list Serve Plmn List serviced in S1SETUP RESPONSE message carries PLMN1 and PLMN2, takes eNB1
Then the PLMN having jointly with MME, i.e. PLMN1 and PLMN2 save supported PLMN 1 on coupling AssoID1 and PLMN2 are used
In the routing of Cell Broadcast CB and subsequent MME.
Specifically, eNB2 is somebody's turn to do in the S1SETUP RESPONSE message that SCTP coupling is that AssoID2 receives MME reply
The operator list Serve Plmn List serviced in S1SETUP RESPONSE message carries PLMN1 and PLMN2, takes eNB1
Then the PLMN having jointly with MME, i.e. PLMN1 save supported PLMN 1 on coupling AssoID2 and are used for Cell Broadcast CB with after
The routing of continuous MME.
Specifically, each MME can support multiple PLMN under GWCN scene, therefore, according to base station and core net
The PLMN quantity that each MME is supported in PLMN negotiation result can determine the network share scene of base station.
Embodiment three
The embodiment of the present invention provides across PLMN switching method in a kind of base station, as shown in figure 5, this method comprises:
Step 301, eNB obtain the PLMN negotiation result of core net, determine that the network of base station is total according to the negotiation result
Scene is enjoyed, the network share scene of the eNB includes that MOCN is shared and GWCN is shared.
Specifically, each MME can only support an individual PLMN under MOCN scene, and under GWCN scene, each
MME can support multiple PLMN, can be true according to the PLMN quantity that each MME can be supported in the PLMN negotiation result of core net
Determine the network share scene of base station, which includes that MOCN is shared and GWCN is shared.Wherein, base station and core net
PLMN negotiations process processing can refer to embodiment one and embodiment two, and details are not described herein for the embodiment of the present invention.
Wherein, as shown in Figure 1, MOCN technology of sharing is that an eNodeB is connected to multiple cores net node, eNodeB net
Member is shared as its offer service between multiple operators.As shown in Fig. 2, GWCN technology of sharing is while share of access network and portion
Divide core net node, not only eNodeB network element is shared, and part equipment of the core network (such as MME) is also shared as multiple operators and provides clothes
Business.
Step 302, eNB receive the measurement report that user equipment (UE) is sent, and determine that base station is endogenous according to the measurement report
The PLMN of the cell and PLMN of switching target small area.
Specifically, the measurement report generally includes measurement mark after eNB obtains the measurement report that UE is sent, pass through the mark
This measurement event door for reporting corresponding frequency point, event to trigger can be known from the measuring configuration itself stored by knowing network
The contents such as limit, period triggering purpose；Serving cell measurement amount (Reference Signal Received Power RSRP and Reference Signal Received Quality
RSRQ)；The adjacent cell list measured includes Physical Cell Identifier, the value of the corresponding measurement amount of the cell, cell ID, tracking
Region code and PLMN list.The PLMN of source cell and switching target small area in eNB can be determined according to the measurement report
PLMN。
Specifically, selecting the PLMN of the switching target small area in eNB according to 23.251 agreements, selection principle is preferential choosing
It selects and supports the available cell of current service PLMN as switching target small area；If not supporting can be used for current service PLMN small
Area then selects the available cell for supporting reciprocity PLMN or selects one can be used according to the configuration of the side eNB as switching target small area
Cell is as switching target small area.
Step 303, the source cell PLMN and the switching target small area PLMN difference when, eNB execute with it is described
Across PLMN switching in the corresponding eNB of network share scene of eNB.
Specifically, eNB judges that the PLMN of source cell and the switching target are small according to the PLMN information that measurement report determines
Whether the PLMN in area is identical.When the PLMN difference of the PLMN of the source cell and the switching target small area, eNB is executed and institute
Across PLMN switching in the corresponding eNB of network share scene of eNB is stated, across PLMN switching includes that MOCN shares under scene in the eNB
Across PLMN switching and GWCN share across PLMN switching in eNB under scene in eNB.Wherein, with the network share scene pair of the eNB
Across PLMN switching includes handoff preparation phase and handover execution stage in the eNB answered, is executed under different network share scenes
Different handoff preparation phases and handover execution stage.
Across PLMN switching method in base station provided in an embodiment of the present invention predefines the network share scene of base station, into
Across PLMN hand-off process in the capable and network share scene respective base station, can be effectively on the UE after across PLMN switching in standing
Context information is updated to MME, and ensure that business continuance, is also solved the prior art and is not supported across PLMN scene in base station
The problem of, reduce the UE call drop caused by switching across PLMN in base station, so that the application scenarios for improving network share are flexible
Property, popularity and stability.
Example IV
The embodiment of the present invention provides across PLMN switching method in a kind of base station, as shown in fig. 6, this method comprises:
Step 401, eNB obtain the PLMN negotiation result of core net, and the network share of eNB is determined according to the negotiation result
Scene is shared for MOCN.
Specifically, each MME can only support an individual PLMN under MOCN scene, assisted according to the PLMN of core net
Each MME can support an individual PLMN that can determine that the network share scene of eNB is shared for MOCN in quotient's result.Its
In, the PLMN negotiations process processing of eNB and core net can refer to embodiment one, and details are not described herein for the embodiment of the present invention.
Step 402, eNB receive UE reporting measurement reports, and the PLMN of source cell in base station is determined according to the measurement report
With the PLMN of switching target small area.
Specifically, selecting the PLMN of the switching target small area in eNB according to 23.251 agreements, selection principle is preferential choosing
It selects and supports the available cell of current service PLMN as switching target small area；If not supporting can be used for current service PLMN small
Area then selects the available cell for supporting reciprocity PLMN or selects one can be used according to the configuration of the side eNB as switching target small area
Cell is as switching target small area.
Specifically, as shown in fig. 7, the source cell Cell1 of eNB receive the UE amount of reporting report after, can according to the measurement report
To determine the PLMN of the PLMN of source cell and switching target small area in eNB, wherein the measurement report include measure neighbour it is small
Area's list includes value, cell ID, Tracking Area Code and the PLMN list of Physical Cell Identifier, the corresponding measurement amount of the cell
Etc. information.
When the PLMN difference of step 403, the PLMN of the source cell and the switching target small area, eNB sends first and cuts
Request message is changed to source mobile management entity MME, the first switching request message carries the PLMN of the switching target small area
Information, so that the source MME determines target MME according to the PLMN information of the switching target small area.
Specifically, eNB judges that the PLMN of source cell and the switching target are small according to the PLMN information that measurement report determines
Whether the PLMN in area is identical, and when the PLMN difference of the PLMN of the source cell and the switching target small area, eNB sends first and cuts
Request message is changed to source mobile management entity MME.As shown in fig. 7, being believed according to the PLMN of the switching target small area Cell2 selected
Breath, source cell Cell1 is in the Selected TAI of the Target ID of the first switching request message Handover Required
The PLMN of switching target small area Cell2 is filled in, and directapath anti-pass availability Direct Forwarding Path is set
Availability be it is available, according to corresponding coupling information, the source cell Cell1 of base station sends the first switching request message
Handover Required to source MME (Source MME).Then, Source MME is according to the Handover received
The Selected TAI of the Target ID of Required message selects corresponding Target MME, and the first migration request is disappeared
Breath Forward Relocation Request is sent to target MME (Target MME).Target MME receives Forward
After Relocation Request message, creation conversation procedure is carried out between destination service gateway (Target SGW).
Step 404, eNB receive the second switching request message that the target MME is sent, the second switching request message
Carry the carrying information of the target MME creation.
Specifically, as shown in fig. 7, the switching target small area Cell2 of eNB receives the second switching in corresponding SCTP coupling
Request message Handover Request, Handover Request message carries the carrying letter of switching Target MME creation
Breath.
Step 405, eNB send switching request acknowledgement message to the target MME, the switching request acknowledgement message instruction
The switching target small area switches over admission processing and preparation is completed.
Specifically, as shown in fig. 7, in the Target cell Cell2 of the eNB admission processing switched over and preparing switching completion
Afterwards, the Target cell Cell2 of eNB sends switching request acknowledgement message Handover Request to Target MME
Acknowledge.After Target MME receives Handover Request Acknowledge message, Target MME to
Source MME replys the second migration request message Forward Relocation Response.
Step 406, eNB receive the switching command message that the source MME is sent, according to switching command message creation pair
The first RRC connection reconfiguration that should switch sets message.
Specifically, as shown in fig. 7, the source cell Cell1 of eNB receives the switching command message that Source MME is sent
Handover Command, after receiving the Handover Command message, across PLMN switching is ready to complete in instruction eNB.
Step 407, eNB send the first RRC connection reconfiguration and set message to the UE, the first RRC connection reconfiguration
It sets message and indicates that the UE executes random access in the switching target small area.
Specifically, as shown in fig. 7, the source cell Cell1 of eNB according to receiving Handover Command message, creation pair
First RRC connection reconfiguration of the switching answered sets message RRC Connection Reconfiguration, and by RRC
Connection Reconfiguration message is handed down to UE by UU mouthfuls.UE receives the RRC Connection of switching
After Reconfiguration message, corresponding parameter is saved, the random access in switching target small area Cell2 is triggered.
Wherein, radio resource control RRC (Radio Resource Control), RRC handle UE (User
Equipment the third layer information of plane) is controlled between eNodeB (Evolved Node-B).RRC carries out radio resource
Related signaling is distributed and sends, the major part of control signaling is RRC information between UE and EUTRAN, and RRC information, which carries, builds
Whole parameters needed for vertical, modification and releasing layer and physical layer protocol entity.
Step 408, eNB send first state Transfer Message to the source MME.
Specifically, as shown in fig. 7, the source cell Cell1 of eNB sends first state Transfer Message eNB Status
Transfer is sent on corresponding Source MME.
Step 409, eNB receive the second state Transfer Message that the target MME is sent.
Specifically, as shown in fig. 7, the switching target small area Cell2 of eNB receives the second state turn that Target MME is sent
Message Mme Status Transfer is moved, data inverse-transmitting process is executed.
The first RRC connection reconfiguration that step 410, eNB receive the UE transmission, which is set, completes message, the first RRC connection
It reconfigures completion message and indicates that the UE switching is completed.
Specifically, as shown in fig. 7, UE after the synchronizing successfully of switching target small area Cell2, gives switching target small area
Cell2 sends RRC connection reconfiguration and sets completion message RRC Connection Reconfiguration Complete, indicates UE
Switching is completed.The switching target small area Cell2 of eNB receives UE and reports RRC Connection Reconfiguration
After Complete message, specifies UE and completed across PLMN switching completion in station.
Step 411, eNB send handoff notification message to the target MME, according to the handoff notification message by the UE
Contextual information update on the target MME.
Specifically, as shown in fig. 7, the switching target small area Cell2 of eNB passes through handoff notification message Handover
Notify updates the relevant contextual information of UE onto corresponding Target MME.Target MME receives Handover
After Notify message, triggering Target MME and the direct bearing modification of Target SGW.
Step 412, eNB receive the UE context release command that the source MME is sent, and the UE context release command refers to
Show the release and UE context release of the source cell radio resource.
Specifically, as shown in fig. 7, eNB source cell Cell1 wait Source MME initiate the release command of UE context,
The release and UE context for triggering source cell Cell1 associated radio resource discharge process.Source cell Cell1 associated radio resource
After release and the release of UE context, across PLMN switching is completed in eNB.
Across PLMN switching method in base station provided in an embodiment of the present invention predefines the network share scene of base station, into
Across PLMN hand-off process in the capable and network share scene respective base station, can be effectively on the UE after across PLMN switching in standing
Context information is updated to MME, and ensure that business continuance, is also solved the prior art and is not supported across PLMN scene in base station
The problem of, reduce the UE call drop caused by switching across PLMN in base station, so that the application scenarios for improving network share are flexible
Property, popularity and stability.
Embodiment five
The embodiment of the present invention provides across PLMN switching method in a kind of base station, as shown in figure 8, this method comprises:
Step 501, eNB obtain the PLMN negotiation result of core net, and the network share of eNB is determined according to the negotiation result
Scene is shared for GWCN.
Specifically, each MME can support multiple PLMN under GWCN scene, according to the PLMN negotiation result of core net
In each MME can determine that the network share scene of eNB is shared for GWCN with multiple individual PLMN.Wherein, eNB and core
The PLMN negotiations process processing of net can refer to embodiment two, and details are not described herein for the embodiment of the present invention.
Step 502, eNB receive UE reporting measurement reports, and the PLMN of source cell in base station is determined according to the measurement report
With the PLMN of switching target small area.
Specifically, as shown in figure 9, after the source cell Cell1 of eNB receives UE reporting measurement reports, the measurement report
Adjacent cell list including measuring includes Physical Cell Identifier, the value of the corresponding measurement amount of the cell, cell ID, tracking area
The information such as domain code and PLMN list.The PLMN of source cell and switching target small area in eNB can be determined according to the measurement report
PLMN.The PLMN of the switching target small area Cell2 in eNB can be determined according to the measurement report.
Specifically, selecting the PLMN of the switching target small area in eNB according to 23.251 agreements, selection principle is preferential choosing
It selects and supports the available cell of current service PLMN as switching target small area；If not supporting can be used for current service PLMN small
Area then selects the available cell for supporting reciprocity PLMN or selects one can be used according to the configuration of the side eNB as switching target small area
Cell is as switching target small area.
When the PLMN difference of step 503, the PLMN of the source cell and switching target small area, eNB selects the UE
The PLMN information of the switching target small area is carried to switching target side cell in base station.
Specifically, eNB judges that the PLMN of source cell and the switching target are small according to the PLMN information that measurement report determines
Whether the PLMN in area is identical, when the PLMN difference of the PLMN of the source cell and switching target small area, as shown in figure 9, using existing
Capable preparation is switched into some eNB, while the switching target small area supported PLMN information that source cell Cell1 selects UE in eNB
It is carried in eNB and switches target side cell Cell2.
Step 504, eNB send the 2nd RRC connection reconfiguration and set message to the UE, and the 2nd RRC connection reconfiguration, which is set, to disappear
Breath indicates that the UE executes random access in the switching target small area.
Specifically, as shown in figure 9, the source cell Cell1 of eNB sends the 2nd RRC and connects after switching is ready to complete in eNB
Reconfiguration message RRC Connection Reconfiguration is met to UE, when UE receives the RRC Connection
After Reconfiguration message, corresponding parameter is saved, the random access in switching target small area Cell2 is triggered.
The 2nd RRC connection reconfiguration that step 505, eNB receive the UE transmission, which is set, completes message, the 2nd RRC connection
It reconfigures completion message and indicates that the UE switching is completed.
Specifically, as shown in figure 9, UE after the synchronizing successfully of switching target small area Cell2, the switching target small area of base station
Cell2 receives RRC connection reconfiguration and sets completion message RRC Connection Reconfiguration Complete, the RRC
Connection Reconfiguration Complete message indicates that UE switching is completed.
Step 506, eNB transmitting path switching request message to MME, according to the path switching request message by the UE
Contextual information update on the MME.
Specifically, as shown in figure 9, the switching target small area Cell2 of eNB, which receives UE, reports RRC Connection
After Reconfiguration Complete message, specifies UE and completed across PLMN switching completion, switching target small area in station
Cell2 passage path switching request message Path Switch Request updates the relevant contextual information of UE onto MME.
After MME receives Path Switch Request, correlation ERAB bearing modification process is carried out.
Wherein, ERAB (Evolved Radio Access Bearer, the radio access bearer of evolution) refers to user plane
Carrying, for transmitting voice, number between UE (User Equipment, user equipment) and CN (Core Network, core net)
According to and multimedia service.
Step 507, eNB receive the path handoff request acknowledgment message that the MME is sent, according to the path switching request
The contextual information that response message carries out the UE updates and UE context release.
Specifically, as shown in figure 9, the switching target small area Cell2 of eNB receives the path handoff request acknowledgment message of MME
Path Switch Request Ack, then, eNB carry out the renewal process of correlation UE context.The switching target small area of eNB
After Cell2 indicates the release of the UE context of the source cell Cell1 in base station, across PLMN switching is completed in eNB.
Across PLMN switching method in base station provided in an embodiment of the present invention predefines the network share scene of base station, into
Across PLMN hand-off process in the capable and network share scene respective base station, can be effectively on the UE after across PLMN switching in standing
Context information is updated to MME, and ensure that business continuance, is also solved the prior art and is not supported across PLMN scene in base station
The problem of, reduce the UE call drop caused by switching across PLMN in base station, so that the application scenarios for improving network share are flexible
Property, popularity and stability.
Embodiment six
The embodiment of the present invention provides a kind of base station 1, and as shown in Figure 10, which includes: acquiring unit 10, receiving unit
11, switch unit 12；Wherein,
Acquiring unit 10 determines the net of base station according to the negotiation result for obtaining the PLMN negotiation result of core net
Network shares scene, wherein the network share scene of the base station includes that multi-operator core network MOCN is shared and gateway core
Network G WCN is shared.
Receiving unit 11 determines base station according to the measurement report for receiving the measurement report of user equipment (UE) transmission
The PLMN of the interior source cell and PLMN of switching target small area.
The switch unit 12, in the source cell PLMN and the switching target small area PLMN difference when,
Execute across PLMN switching in base station corresponding with the network share scene of the base station.
Here, as shown in figure 11, the base station 1 may further include judging unit 13, for judging the source cell
PLMN it is whether identical as the PLMN of the switching target small area.
Wherein, the switch unit 12, which is executed, cuts in base station corresponding with the network share scene of the base station across PLMN
It changes, comprising: handoff preparation phase and handover execution stage.
Further, as shown in figure 11, the base station 1 further includes transmission unit 14；If the network share field of the base station
Scape is shared for MOCN, in the handoff preparation phase,
Transmission unit 14, for sending the first switching request message to source mobile management entity MME, first switching is asked
Message is asked to carry the PLMN information of the switching target small area, so that the source MME is according to the switching target small area
PLMN information determines target MME；It is also used to send switching request acknowledgement message to the target MME, the Handover Request Acknowledge
Message indicates that the switching target small area switches over admission processing and preparation is completed；
Receiving unit 11, the second switching request message sent for receiving the target MME, second switching request
Message carries the carrying information of the target MME creation；It is also used to receive the switching command message that the source MME is sent, according to
First RRC connection reconfiguration of the corresponding switching of switching command message creation sets message.
Further, if the network share scene of the base station is shared for MOCN, the base station under the shared scene of MOCN is executed
Interior across PLMN switching, in the handover execution stage,
Transmission unit 14 sets message to the UE, the first RRC connection for sending the first RRC connection reconfiguration
Reconfiguration message indicates that the UE executes random access in the switching target small area；It is also used to send first state Transfer Message
To the source MME；It is also used to send handoff notification message to the target MME, according to the handoff notification message by the UE
Contextual information update on the target MME；
Receiving unit 11, the second state Transfer Message sent for receiving the target MME；It is also used to receive the UE
The first RRC connection reconfiguration sent, which is set, completes message, and the first RRC connection reconfiguration, which is set, has completed the message instruction UE switching
It completes；It is also used to receive the release command that the source MME is sent, the release command indicates releasing for the source cell radio resource
It puts and is discharged with the UE context.
Further, as shown in figure 11, the base station further includes transmission unit 14；If the network share field of the base station
Scape is shared for GWCN, in the handoff preparation phase,
The PLMN information of transmission unit 14, the switching target small area for selecting the UE is carried to base station inscribe
Change target side cell.
Further, if the network share scene of the base station is shared for GWCN, in the handover execution stage,
Transmission unit 14 sets message to the UE, the 2nd RRC connection reconfiguration for sending the 2nd RRC connection reconfiguration
It sets message and indicates that the UE executes random access in the switching target small area；It is also used to transmitting path switching request message extremely
MME updates the contextual information of the UE onto the MME according to the path switching request message；
Receiving unit 11, the 2nd RRC connection reconfiguration for receiving the UE transmission, which is set, completes message, the 2nd RRC
Connection reconfiguration sets completion message and indicates that the UE switching is completed；It is also used to receive the path switching request that the MME is sent to answer
Answer message, according to the path handoff request acknowledgment message carry out the UE contextual information update and the UE context
Release.
In practical applications, the acquiring unit 10, receiving unit 11, judging unit 13, switch unit 12 and transmission
Unit 14 can be by the central processing unit (CPU), microprocessor (MPU), digital signal processor (DSP) or existing that are located on base station
Field programmable gate array (FPGA) etc. is realized.
Specifically, the understanding of base station provided in an embodiment of the present invention can be in reference implementation example three to the base station of embodiment five
The explanation of method across PLMN switching, details are not described herein for the present embodiment.
The embodiment of the present invention provides a kind of base station, predefines the network share scene of base station, carries out and the network share
Across PLMN hand-off process in scene respective base station can effectively arrive the UE contextual information update after across PLMN switching in standing
MME, and ensure that business continuance, it also solves the problems, such as that the prior art does not support across PLMN scene in base station, reduces
Because of the UE call drop that switching across PLMN in base station causes, to improve the application scenarios flexibility of network share, popularity and steady
It is qualitative.
The embodiment of the present invention also provides a kind of communication system, the communication system include user equipment, core net and as above
The base station, the communication system are carried out corresponding with the network share scene by the network share scene of predetermined base station
Across PLMN hand-off process in base station can be effectively updated the UE contextual information after across PLMN switching in standing to MME, and
It ensure that business continuance, also solve the problems, such as that the prior art does not support across PLMN scene in base station, reduce because in base station
The UE call drop that across PLMN switching causes, to improve application scenarios flexibility, popularity and the stability of network share.
It should be noted that related signalling involved in the embodiment of the present invention one to embodiment five can be found in agreement
3GPP TS36.331、3GPP TS36.413、3GPP TS36.423、3GPP TS 23.251、3GPP TS 23.401。
It should be noted that across PLMN switching method, base station and communication system in a kind of base station provided in an embodiment of the present invention
System is only illustrated by taking LTE communication system as an example, but is not limited only to this, as long as being related to across PLMN switching in a kind of base station
Method, base station and communication system are in protection scope of the present invention.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, the shape of hardware embodiment, software implementation or embodiment combining software and hardware aspects can be used in the present invention
Formula.Moreover, the present invention, which can be used, can use storage in the computer that one or more wherein includes computer usable program code
The form for the computer program product implemented on medium (including but not limited to magnetic disk storage and optical memory etc.).
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (11)
1. across PLMN switching method in a kind of base station characterized by comprising
The PLMN negotiation result for obtaining core net, the network share scene of base station, the base station are determined according to the negotiation result
Network share scene include that multi-operator core network MOCN is shared and gateway core network G WCN is shared；
The measurement report that user equipment (UE) is sent is received, the PLMN of source cell and switching in base station are determined according to the measurement report
The PLMN of Target cell；
When the PLMN difference of the PLMN of the source cell and the switching target small area, the network share field with the base station is executed
Across PLMN switching in the corresponding base station of scape；
Across PLMN switching in the base station corresponding with the network share scene of the base station, comprising: handoff preparation phase and cut
Change the execution stage.
2. across PLMN switching method in base station according to claim 1, which is characterized in that the network share field of the base station
Scape is shared for MOCN, executes across PLMN switching in the base station under the shared scene of MOCN；The handoff preparation phase includes:
The first switching request message is sent to source mobile management entity MME, the first switching request message carries the switching
The PLMN information of Target cell, so that the source MME determines target MME according to the information of the switching target small area PLMN；
The second switching request message that the target MME is sent is received, the second switching request message carries the target MME
The carrying information of creation；
Switching request acknowledgement message is sent to the target MME, the switching request acknowledgement message indicates that the switching target is small
Area switches over admission processing and preparation is completed；
The switching command message that the source MME is sent is received, the first RRC of corresponding switching is created according to the switching command message
Connection reconfiguration sets message.
3. across PLMN switching method in base station according to claim 2, which is characterized in that the network share field of the base station
Scape is shared for MOCN, executes across PLMN switching in the base station under the shared scene of MOCN；The handover execution stage includes:
It sends the first RRC connection reconfiguration and sets message to the UE, the first RRC connection reconfiguration sets message and indicates the UE
Random access is executed in the switching target small area；
First state Transfer Message is sent to the source MME；
Receive the second state Transfer Message that the target MME is sent；
The first RRC connection reconfiguration for receiving the UE transmission, which is set, completes message, and the first RRC connection reconfiguration is set completion message and referred to
Show that the UE switching is completed；
Handoff notification message is sent to the target MME, according to the handoff notification message by the contextual information of the UE more
Newly on the target MME；
Receive the UE context release command that the source MME is sent, the UE context release command indicate the source cell without
The release of line resource and UE context release.
4. across PLMN switching method in base station according to claim 1, which is characterized in that the network share field of the base station
Scape is shared for GWCN, executes across PLMN switching in the base station under the shared scene of GWCN；The handoff preparation phase includes:
The PLMN information of the switching target small area selected the UE is carried to switching target side cell in base station.
5. across PLMN switching method in base station according to claim 4, which is characterized in that the network share field of the base station
Scape is shared for GWCN, executes across PLMN switching in the base station under the shared scene of GWCN；The handover execution stage includes:
It sends the 2nd RRC connection reconfiguration and sets message to the UE, the 2nd RRC connection reconfiguration sets message and indicates the UE in institute
It states switching target small area and executes random access；
The 2nd RRC connection reconfiguration for receiving the UE transmission, which is set, completes message, and the 2nd RRC connection reconfiguration is set completion message and referred to
Show that the UE switching is completed；
Transmitting path switching request message to MME, according to the path switching request message by the contextual information of the UE more
Newly on the MME；
The path handoff request acknowledgment message that the MME is sent is received, institute is carried out according to the path handoff request acknowledgment message
The contextual information for stating UE updates and UE context release.
6. a kind of base station, which is characterized in that the base station includes: acquiring unit, receiving unit, switch unit；Wherein,
The acquiring unit for obtaining the PLMN negotiation result of core net, and determines according to the negotiation result net of base station
Network shares scene, wherein the network share scene of the base station includes that multi-operator core network MOCN is shared and gateway core
Network G WCN is shared；
The receiving unit for receiving the measurement report of user equipment (UE) transmission, and determines base station according to the measurement report
The PLMN of the interior source cell and PLMN of switching target small area；
The switch unit, in the source cell PLMN and the switching target small area PLMN difference when, execute with
Across PLMN switching in the corresponding base station of network share scene of the base station；
The switch unit executes across PLMN switching in base station corresponding with the network share scene of the base station, comprising: switching
Preparation stage and handover execution stage.
7. base station according to claim 6, which is characterized in that the base station further include: transmission unit；If the base station
Network share scene is shared for MOCN, in the handoff preparation phase,
The transmission unit, for sending the first switching request message to source mobile management entity MME, first switching request
Message carries the PLMN information of the switching target small area, so that PLMN of the source MME according to the switching target small area
Information determines target MME；It is also used to send switching request acknowledgement message to the target MME, the switching request acknowledgement message
Indicate that the switching target small area switches over admission processing and preparation is completed；
The receiving unit, the second switching request message sent for receiving the target MME, second switching request disappear
Breath carries the carrying information of the target MME creation；It is also used to receive the switching command message that the source MME is sent, according to institute
The first RRC connection reconfiguration for stating the corresponding switching of switching command message creation sets message.
8. base station according to claim 7, which is characterized in that if the network share scene of the base station is shared for MOCN,
It executes MOCN and shares across PLMN switching in base station under scene, in the handover execution stage,
The transmission unit sets message to the UE, the first RRC connection weight for sending the first RRC connection reconfiguration
It configures message and indicates that the UE executes random access in the switching target small area；It is also used to send first state Transfer Message extremely
The source MME；It is also used to send handoff notification message to the target MME, according to the handoff notification message by the UE's
Contextual information is updated onto the target MME；
The receiving unit, the second state Transfer Message sent for receiving the target MME；It is also used to receive the UE hair
The first RRC connection reconfiguration sent, which is set, completes message, and the first RRC connection reconfiguration sets completion message and indicates that the UE switching is complete
At；It is also used to receive the release command that the source MME is sent, the release command indicates the release of the source cell radio resource
It is discharged with the UE context.
9. base station according to claim 6, which is characterized in that the base station further includes transmission unit；If the base station
Network share scene is shared for GWCN, in the handoff preparation phase,
The transmission unit, the PLMN information of the switching target small area for selecting the UE, which is carried in base station, to be switched
Target side cell.
10. base station according to claim 9, which is characterized in that if the network share scene of the base station is shared for GWCN,
In the handover execution stage,
The transmission unit sets message to the UE for sending the 2nd RRC connection reconfiguration, and the 2nd RRC connection reconfiguration is set
Message indicates that the UE executes random access in the switching target small area；Transmitting path switching request message is also used to MME,
The contextual information of the UE is updated onto the MME according to the path switching request message；
The receiving unit, the 2nd RRC connection reconfiguration for receiving the UE transmission, which is set, completes message, and the 2nd RRC connects
It connects to reconfigure and completes message and indicate that UE switching is completed；It is also used to receive the path switching request response that the MME is sent
Message updates according to the contextual information that the path handoff request acknowledgment message carries out the UE and the UE context is released
It puts.
11. a kind of communication system, which is characterized in that the communication system includes: user equipment, core net and claim 6
To 10 described in any item base stations.
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| CN201510428543.8A CN106376037B (en) | 2015-07-20 | 2015-07-20 | Across PLMN switching method, base station and communication system in a kind of base station |
| PCT/CN2015/094871 WO2017012228A1 (en) | 2015-07-20 | 2015-11-18 | Inter-plmn handover method in evolved node b, evolved node b, communication system and storage medium |
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| CN201510428543.8A CN106376037B (en) | 2015-07-20 | 2015-07-20 | Across PLMN switching method, base station and communication system in a kind of base station |
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| WO2017012228A1 (en) | 2017-01-26 |
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