CN102369757B - A kind of method that network is selected and device - Google Patents
A kind of method that network is selected and device Download PDFInfo
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- CN102369757B CN102369757B CN200980119550.2A CN200980119550A CN102369757B CN 102369757 B CN102369757 B CN 102369757B CN 200980119550 A CN200980119550 A CN 200980119550A CN 102369757 B CN102369757 B CN 102369757B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/18—Selecting a network or a communication service
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Abstract
Provide method and the device of the selection of a kind of network, they relate to wireless communication field.Wherein, described method comprises: receive subscriber equipment by supporting the network selective information that the subordinate community of urgency traffic sends; In the access reason described subscriber equipment being detected for after urgent, the public land mobile network (PLMN) connected according to described network selective information and described subordinate community to the tenability information of urgency traffic, for described subscriber equipment is selected to support that the PLMN of described urgency traffic connects.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to method and the device of the selection of a kind of network.
Background technology
LTE (Long Term Evolved, long-term evolving network) be current 3GPP (3rd GenerationPartnership Project, third generation partner program) a kind of mobile communications network of tissue Zhong Ge manufacturer active research, it is the evolvement network of UMTS (Universal Mobile Telecommunication System, universal mobile telecommunications system).
In LTE, can support two kinds of urgent call modes, one is PS (Packet Switch, packet switch) urgent call; Another kind is CS (Circuit Switch, circuit switching) urgent call.Wherein PS urgent call is realized by the mode of IMS (IP Multimedia Subsystem, IP Multimedia System), and CS urgent call is then realized by CSFB (CS Fallback, circuit switched fallback) method.
In the prior art, UE, when carrying out urgency traffic access, because selected network cannot support this urgency traffic, may cause this urgency traffic access failure, or needs to re-start network selection and access, reduces the access speed of urgency traffic.
Summary of the invention
The embodiment provides method and the device of the selection of a kind of network, the speed making UE carry out urgency traffic access obtains effective lifting.
Wherein, the method that a kind of network that the embodiment of the present invention provides is selected, comprising: receive subscriber equipment by supporting the network selective information that the subordinate community of urgency traffic sends; In the access reason described subscriber equipment being detected for after urgent, the public land mobile network PLMN connected according to described network selective information and described subordinate community to the tenability information of urgency traffic, for described subscriber equipment is selected to support that the PLMN of described urgency traffic connects.
The method that the another kind of network that the embodiment of the present invention provides is selected, comprising: obtain the subordinate community of base station transmission to the tenability information of urgency traffic; Can support that urgency traffic access is carried out in the described subordinate community of described urgency traffic according to described tenability Information Selection.
The embodiment of the present invention additionally provides a kind of base station, comprising: receiving element: for receiving subscriber equipment by supporting the network selective information that the subordinate community of urgency traffic sends; Network selection unit: in the access reason described subscriber equipment being detected for after urgent, the PLMN connected according to described network selective information and described subordinate community to the tenability information of urgency traffic, for described subscriber equipment is selected to support that the PLMN of described urgency traffic connects.
Embodiments provide a kind of subscriber equipment, comprising: acquiring unit: for obtaining its subordinate community of base station transmission to the tenability information of urgency traffic; Cell selection unit: for supporting that urgency traffic access is carried out in the described subordinate community of described urgency traffic according to the tenability Information Selection of above-mentioned subordinate community to urgency traffic.
The method that the network that the embodiment of the present invention provides is selected and device, by reference to subordinate community, base station to the tenability of urgency traffic, make UE can access the network supporting urgency traffic fast when initiating urgency traffic.
Accompanying drawing explanation
The base station side flow chart of the method that Fig. 1 a selects for a kind of network that the embodiment of the present invention provides;
The user equipment side flow chart of the method that Fig. 1 b selects for a kind of network that the embodiment of the present invention provides;
The flow chart that Fig. 2 applies under the scene of urgent call for the method that a kind of network that the embodiment of the present invention provides is selected;
The method of a kind of network selection that Fig. 3 provides for the embodiment of the present invention is in urgent call, and the flow chart applied under only having part MME can support the scene of Emmergency log-on in PLMN;
Fig. 4 for method that a kind of network that the embodiment of the present invention provides is selected only have part MME can support the scene of Emmergency log-on in the plmn under the flow chart applied;
The structural representation of a kind of base station that Fig. 5 provides for the embodiment of the present invention;
The structural representation of a kind of subscriber equipment that Fig. 6 provides for the embodiment of the present invention.
Embodiment
In the process realizing the embodiment of the present invention, inventor finds, base station can use urgency traffic tenability to indicate to indicate each subordinate community of this base station whether to support PS urgent call to UE (User Equipment, subscriber equipment).Such as: can by the instruction of urgency traffic tenability by NAS (Non-Access Stratum, Non-Access Stratum) message, i.e. Attach (registration) process or TAU (TrackingArea Update, location area updating) process, inform UE, but following problem may be occurred:
On the one hand, for the UE of normal mode, if the network of registration does not support urgent call, when this UE initiates urgent call, at gravity treatment PLMN (Public Land Mobile Network, public land mobile network) and community time, cannot know which network supports urgent call in time, be merely able to be known, if the network of gravity treatment is not still supported by Attach again, UE also needs to continue gravity treatment, extends the settling time of urgent call;
On the other hand, for the UE of restricted mode, such as: there is no USIM (Universal SubscriberIdentity Module, universal subscriber identity module) card, authentication the situation such as not pass through, then successfully cannot carry out Attach process, thus cannot know whether this network supports urgent call, only have when real initiation emergency calling process, Emergency Attach (Emmergency log-on) flow process access network can be passed through, if network does not support urgent call, then can refuse this request, slow down the speed that urgent call is set up too.In addition, not all PLMN supports the Emmergency log-on process of restricted mode UE.Therefore, for restricted mode UE initiate Emmergency log-on time, if can know whether accessed network supports Emmergency log-on in advance, then can avoid carrying out in this process, because institute's access network does not support this ability, and be rejected, increase meaningless time delay.
In order to effectively solve problems of the prior art, inventor proposes method and the device of the selection of a kind of network, is described in detail the method and apparatus that embodiment of the present invention network is selected below in conjunction with accompanying drawing.
As shown in Figure 1a, be the method for a kind of network selection that the embodiment of the present invention provides, the main flow of its base station side, comprising:
S101a: receive subscriber equipment by the network selective information that the subordinate community of urgency traffic sends can be supported;
Above-mentioned network selective information can comprise: PLMN, the access reason of subscriber equipment self selection are urgent, and whether be restricted mode or normal mode, the information such as MME registered before subscriber equipment if can also comprise user type.
S102a: in the access reason this subscriber equipment being detected for after urgent, the public land mobile network PLMN connected according to above-mentioned network selective information and subordinate community to the tenability information of urgency traffic, for this subscriber equipment is selected to support that the PLMN of this urgency traffic connects.
The process of this selection PLMN, can comprise: if judge that this subscriber equipment is restricted mode according to network selective information, then select to support that the PLMN of Emmergency log-on connects; And/or, if this urgency traffic is urgent call, then select to support that the PLMN of urgent call connects.Thus ensure that the UE of restricted mode directly can support that the PLMN of Emmergency log-on connects, improve speed and the success rate of urgent access.
Can also comprise before this step: obtain the PLMN of above-mentioned subordinate community connection to the tenability information of urgency traffic by S1 interface message from mobile management entity MME.
The tenability information of above-mentioned PLMN to urgency traffic comprises: to the tenability information of urgent call; And/or the tenability information to Emmergency log-on.
In the present embodiment, be that subscriber equipment is selected to support that the PLMN of urgency traffic connects by network side, thus improve speed and success rate that UE carries out urgent access.
As further embodiment of this invention, in step 101a, can also comprise: according to the tenability information of PLMN to urgency traffic that subordinate community connects, the tenability information of subordinate community to urgency traffic is set before; And the tenability information of this subordinate community to urgency traffic is sent to subscriber equipment, support that urgency traffic access is carried out in the subordinate community of this urgency traffic to enable this subscriber equipment according to the tenability Information Selection of above-mentioned subordinate community to urgency traffic.
Wherein, the method for subscriber equipment the tenability information of subordinate community to urgency traffic is sent to be: by the system broadcast message in this subordinate community, the tenability information of this subordinate community to urgency traffic to be sent to subscriber equipment.
The tenability information of above-mentioned subordinate community to urgency traffic can comprise: urgency traffic tenability indicates, and/or the instruction of Emmergency log-on tenability; Wherein, the instruction of urgency traffic tenability is used to indicate subordinate community and whether supports urgent call; The instruction of Emmergency log-on tenability is used to indicate subordinate community and whether supports Emmergency log-on.
In the present embodiment, by subordinate community sent to UE to the tenability information of urgency traffic, make UE in the process of selection community as a reference, thus ensure that UE can access the network supporting urgency traffic fast when initiating urgency traffic.
As shown in Figure 1 b, the main flow of user side in the method that a kind of network provided for the embodiment of the present invention is selected, comprising:
S101b: obtain the subordinate community of base station transmission to the tenability information of urgency traffic;
The above-mentioned tenability information to urgency traffic comprises: urgency traffic tenability indicates, and/or the instruction of Emmergency log-on tenability; Wherein, the instruction of urgency traffic tenability is used to indicate subordinate community and whether supports urgent call; The instruction of Emmergency log-on tenability is used to indicate subordinate community and whether supports Emmergency log-on.
S102b: can support that urgency traffic access is carried out in the subordinate community of this urgency traffic according to the tenability Information Selection of above-mentioned subordinate community to urgency traffic.
In this access procedure, can also comprise: be restricted mode signals base by network selective information by user type in this subordinate community, detect that access reason is for after urgent, selects to support that the PLMN of Emmergency log-on connects to make base station.
In the present embodiment, by obtaining subordinate community that base station sends to the tenability information of urgency traffic, making UE in selection community process as a reference, thus ensure that UE can access the network supporting urgency traffic fast when initiating urgency traffic.
As shown in Figure 2, the flow chart that the method that a kind of network provided for the embodiment of the present invention is selected is applied under urgency traffic is the scene of urgent call, comprising:
S201:eNB broadcasts its subordinate community and whether supports urgent call in system broadcast message.
Before this step, eNB can obtain and store the tenability of connected network to urgent call; Its method obtained can be: eNB by newly-increased or original S1 interface message from MME (MobilityManagement Entity, mobile management entity) obtain, above-mentioned original S1 interface message can be: S1 SETUP RESPONSE (S1 sets up response), or the message such as MME CONFIGURATIONUPDATE (mobile management entity config update).
In this step S201, by the mode of the instruction of broadcasting emergency business support ability in the system broadcast message of this subordinate community, eNB can notify whether this subordinate community of UE supports urgent call, the method arranging the instruction of this urgency traffic tenability has multiple, can arrange according to different strategies, such as, method to set up can be: as long as have one in the PLMN that connects of this subordinate community at least to support urgent call, then put this urgency traffic tenability and be designated as support; The all PLMN connected when this subordinate community do not support urgent call, put this urgency traffic tenability and are designated as and do not support.The method arranging the instruction of this urgency traffic tenability can also be: as long as the MME in the PLMN that connects of this subordinate community has at least one to support urgent call, then think that this PLMN supports urgent call, as long as have at least one to support urgent call in the PLMN that this subordinate community connects, then put this urgency traffic tenability and be designated as support; The all PLMN connected when this subordinate community do not support urgent call, put this urgency traffic tenability and are designated as and do not support.
As further embodiment of this invention, urgency traffic tenability can also be used to indicate and to represent that subordinate community is to PS urgent call, and to CS urgent call, i.e. the tenability of the ability of CSFB.Make not support that the network of PS urgent call can access the urgent call of UE, by assist UE the to return back to urgent call that 2G/3G network carries out circuit domain of the mode of CSFB.
S202:UE receives and reads cell system broadcast, knows that this subordinate community is to the tenability of urgent call, and service access is carried out in the community of urgent call to select one can support according to above-mentioned tenability.
S203:UE initiates urgent call in the community of selected support urgent call.In RRC (RadioResource Control, wireless heterogeneous networks) connection establishment process, be promptly to eNB report access reason and report the PLMN that UE self selects;
Optionally, the MME that UE is registered before can also reporting to eNB.
S204:eNB detects that the access reason of UE is urgent, for UE selects to support that the PLMN of this business connects.
Carry out in the process connected at selection PLMN, the tenability of the PLMN connected that eNB can store according to self to urgent call, the PLMN of UE self selection, for UE selects PLMN to connect, specifically can comprise: if the PLMN that UE selects supports urgent call, then eNB selects this PLMN, otherwise, eNB in the PLMN supporting urgent call, at random for UE chooses a PLMN;
If in step S203, the MME that UE is registered before also reporting, then carry out in the process connected at selection PLMN, eNB can also in conjunction with the registered MME of UE, for UE selects suitable PLMN to connect, specifically can comprise: if the PLMN that UE selects supports urgent call, then eNB selects this PLMN; Otherwise, eNB can with reference to the registered MME of UE for UE selects one to support the PLMN of urgent call: if namely eNB obtains the registered MME of UE and PLMN belonging to this MME supports urgent call, eNB then selects this PLMN, otherwise, eNB in the PLMN supporting urgent call, at random for UE chooses a PLMN.
Afterwards, in selected PLMN for UE select can support that the MME of urgent call connects.
S205:UE successfully sets up urgent call.
In the present embodiment, on the one hand, its subordinate community can be broadcasted by base station in system broadcast message and whether support urgent call, make UE when carrying out PLMN selection and community selects, with reference to this instruction, thus can ensure that UE can access the network supporting urgent call fast when initiating urgent call; On the other hand, by reference to the tenability of each PLMN to urgent call, for subscriber equipment is directly selected to support that the PLMN of this urgent call connects, thus access speed and success rate that UE carries out urgent call can be improve.
As further embodiment of this invention, above-mentioned steps S201-S202; Or S203-S204 also can adopt flow process of the prior art to replace respectively, that is: can select only to adopt in above-mentioned steps S201-S202 the method provided to optimize in prior art subscriber equipment to the selection course of community, or only adopt the method provided in above-mentioned steps S203-S204 to optimize in prior art network side to the selection course of PLMN.Also the effect that certain raising UE carries out the access success rate of urgent call can be reached.
As shown in Figure 3, the method that a kind of network provided for the embodiment of the present invention is selected is urgent call at urgency traffic, and the flow chart applied under only having part MME can support the scene of Emmergency log-on in PLMN, comprising:
S301:eNB broadcasts its subordinate community and whether supports urgent call and Emmergency log-on in system broadcast message.
Before this step, eNB can obtain and store the tenability of connected network to urgent call and Emmergency log-on; Its method obtained can be that eNB passes through newly-increased or original S1 interface message from MME (Mobility Management Entity, mobile management entity) obtain, above-mentioned original S1 interface message can be: S1 SETUP RESPONSE (S1 sets up response), or the message such as MMECONFIGURATION UPDATE (mobile management entity config update).
In step S301, by the mode of the instruction of broadcasting emergency business support ability in the system broadcast message of this subordinate community, eNB can notify whether this subordinate community of UE supports urgent call, the method arranging the instruction of this urgency traffic tenability has multiple, can arrange according to different strategies, such as, method to set up can be: as long as have one in the PLMN that connects of this subordinate community at least to support urgent call, then put this urgency traffic tenability and be designated as support; The all PLMN connected when this subordinate community do not support urgent call, put this urgency traffic tenability and are designated as and do not support.The method arranging the instruction of this urgency traffic tenability can also be: as long as the MME in the PLMN that connects of this subordinate community has at least one to support urgent call, then think that this PLMN supports urgent call, as long as have at least one to support urgent call in the PLMN that this subordinate community connects, then put this urgency traffic tenability and be designated as support; The all PLMN connected when this subordinate community do not support urgent call, put this urgency traffic tenability and are designated as and do not support.
As further embodiment of this invention, urgency traffic tenability can be used to indicate and to represent that subordinate community is to PS urgent call, and to CS urgent call, i.e. the support of the ability of CSFB.Make not support that the network of PS urgent call can access the urgent call of UE, by assist UE the to return back to urgent call that 2G/3G network carries out circuit domain of the mode of CSFB.
And, by the mode of the registration of broadcasting emergency in the system broadcast message of this subordinate community tenability instruction, eNB can notify whether this subordinate community of UE supports Emmergency log-on, the method arranging the instruction of this Emmergency log-on tenability can be: as long as have one in the PLMN that supports of this eNB at least to support Emmergency log-on, then put this and be designated as support; The all PLMN supported as this eNB do not support Emmergency log-on, put this and are designated as and do not support.The method arranging the instruction of this Emmergency log-on tenability can also be: as long as the MME in the PLMN that connects of this subordinate community has at least one to support Emmergency log-on, then think that this PLMN supports Emmergency log-on, as long as have at least one to support Emmergency log-on in the PLMN that this subordinate community connects, then put this Emmergency log-on tenability and be designated as support; The all PLMN connected when this subordinate community do not support Emmergency log-on, put this Emmergency log-on tenability and are designated as and do not support.
As another embodiment of the present invention, the Emmergency log-on tenability instruction related in said method embodiment can also be expanded, this instruction can indicate different reason respectively and whether the UE entering constrained state can carry out Emmergency log-on, correspondingly, the UE entering constrained state due to different reason can carry out community selection with reference to corresponding ability instruction.Above-mentioned reason can comprise: do not have usim card, authentication not invalid etc. by, usim card.
S302:UE receives and reads cell system broadcast, knows the tenability of this subordinate community to urgent call and Emmergency log-on, and selects a community to carry out service access according to above-mentioned tenability.
The method of concrete selection community can comprise: if this UE is normal mode, then select a community can supporting urgent call; If this UE is restricted mode, then needs selection one not only to support urgent call but also support the community of Emmergency log-on.
S303:UE initiates urgent call in selected community.In RRC (Radio Resource Control, wireless heterogeneous networks) connection establishment process, be urgent to eNB report access reason.
In the process, UE can inform eNB by different modes, and whether it is restricted mode, such as:
If this UE is restricted mode, then UE is in RRC connection establishment message, carries random number; Otherwise UE, in RRC connection establishment message, carries the S-TMSI (S-Temporary Mobile Subscriber Identity, Temporary Mobile Subscriber Identity) that the MME that registers distributes as it.In addition UE also can report PLMN selected by oneself to eNB.Optionally, the MME that UE is registered before can also reporting to eNB.
Or, UE can inform eNB its whether be the method for restricted mode can also be: UE is in connection establishment process, the PLMN selected by whether carrying oneself represents that the state of UE is restricted mode or normal mode, if namely UE is restricted mode, then UE is in RRC connection establishment process, does not carry the PLMN oneself selected; Otherwise if this UE is normal mode, then UE is in RRC connection establishment process, carries the PLMN selected by oneself.Optionally, the MME that UE is registered before can also reporting to eNB.
Or, UE can inform eNB its whether be the method for restricted mode can also be: UE is in connection establishment process, represent that the state of UE is restricted mode or normal mode by registered MME before whether carrying, if namely UE is restricted mode, then UE is in RRC connection establishment process, MME registered before carrying; Otherwise if this UE is normal mode, then UE is in RRC connection establishment process, MME registered before not carrying.
By that analogy, UE can also inform eNB by alternate manner, and whether it is restricted mode, does not repeat them here.
S304:eNB detects that the access reason of UE is urgent, judges connection establishment request whether by restricted mode UE is initiated, for UE selects to support that the PLMN of this business connects.
Inform to be whether the distinct methods of restricted mode corresponding to UE in S303, eNB judges that the method whether connection establishment request is initiated for restricted mode UE is also different, can comprise:
If the UE of UE entrained by RRC connection establishment message is designated random number, then think that this UE is restricted mode; Otherwise UE is designated S-TMSI, then think that this UE is normal mode.Or, if UE does not carry selected PLMN, then think that this UE is restricted mode; Otherwise UE carries selected PLMN, then this UE is normal mode.Or, if the MME that UE registers before carrying, then think that this UE is restricted mode; Otherwise the MME that UE is registered before not carrying, then this UE is normal mode.
ENB selects the method for PLMN to comprise for normal mode UE: the tenability of the PLMN connected that eNB stores according to self to urgent call, the PLMN of UE self selection, for UE selects PLMN to connect, specifically can comprise: if the PLMN that UE selects supports urgent call, then eNB selects this PLMN, otherwise, eNB in the PLMN supporting urgent call, at random for UE chooses a PLMN;
In addition, if in step S303, the MME that UE is registered before also reporting, then carry out in the process connected at selection PLMN, eNB can also in conjunction with the registered MME of UE, for UE selects suitable PLMN to connect, specifically can comprise: if the PLMN that UE selects supports urgent call, then eNB selects this PLMN; Otherwise, eNB can with reference to the registered MME of UE for UE selects one to support the PLMN of urgent call: if namely eNB obtains the registered MME of UE and PLMN belonging to this MME supports urgent call, eNB then selects this PLMN, otherwise, eNB in the PLMN supporting urgent call, at random for UE chooses a PLMN;
Afterwards, in selected PLMN for UE select can support that the MME of urgent call connects.
ENB selects the method for PLMN to comprise for restricted mode UE: the PLMN connected that eNB stores according to self is to urgent call and the tenability of Emmergency log-on, the PLMN of UE self selection, for UE selects PLMN to connect, specifically can comprise: if the PLMN that UE selects not only supports urgent call but also support Emmergency log-on, then eNB selects this PLMN, otherwise, eNB is not only supporting urgent call but also support in the PLMN of Emmergency log-on, at random for UE chooses a PLMN;
In addition, if in step S303, the MME that UE is registered before also reporting, then carry out in the process connected at selection PLMN, eNB can also in conjunction with the registered MME of UE, for UE selects suitable PLMN to connect, specifically can comprise: if the PLMN that UE selects not only supports urgent call but also support Emmergency log-on, then eNB selects this PLMN; Otherwise, eNB can with reference to the registered MME of UE for UE selects one not only to support urgent call but also support the PLMN of Emmergency log-on: if namely eNB obtains the registered MME of UE and belonging to this MME, PLMN not only supports urgent call but also support Emmergency log-on, eNB then selects this PLMN, otherwise, eNB is not only supporting urgent call but also support in the PLMN of Emmergency log-on, at random for UE chooses a PLMN.
Afterwards, in selected PLMN for UE select not only can support urgent call but also support that the MME of Emmergency log-on connects.
S305:UE successfully sets up urgent call.
In the present embodiment, on the one hand, its subordinate community can be broadcasted by base station in system broadcast message and whether support urgent call and Emmergency log-on, make the UE of restricted mode when carrying out urgent call, can simultaneously with reference to emergency call capability and Emmergency log-on ability, carry out PLMN and community to select, thus add urgency traffic be created as power, accelerate the Establishing process of urgency traffic; On the other hand, can by reference to the tenability of each PLMN to urgent call and Emmergency log-on, for subscriber equipment is directly selected to support that the PLMN of this urgent call and Emmergency log-on connects, thus improve access speed and success rate that UE carries out urgent call.
As further embodiment of this invention, above-mentioned steps S301-S302; Or S303-S304 also can adopt flow process of the prior art to replace respectively, that is: can select only to adopt in above-mentioned steps S301-S302 the method provided to optimize in prior art subscriber equipment to the selection course of community, or only adopt the method provided in above-mentioned steps S303-S304 to optimize in prior art network side to the selection course of PLMN.Also the effect that certain raising UE carries out the access success rate of urgent call can be reached.
As shown in Figure 4, the flow chart applied under the method that a kind of network provided for the embodiment of the present invention is selected only has part MME can support the scene of Emmergency log-on in the plmn, comprising:
S401:eNB broadcasts its subordinate community and whether supports Emmergency log-on in system broadcast message.
Before this step, eNB can obtain and store the tenability of connected network to Emmergency log-on; Its method obtained can be that eNB passes through newly-increased or original S1 interface message from MME (MobilityManagement Entity, mobile management entity) obtain, above-mentioned original S1 interface message can be: S1 SETUP RESPONSE (S1 sets up response), or the message such as MME CONFIGURATIONUPDATE (mobile management entity config update).
In step S401, by the mode of the registration of broadcasting emergency in the system broadcast message of this subordinate community tenability instruction, eNB can notify whether this subordinate community of UE supports Emmergency log-on, the method arranging the instruction of this Emmergency log-on tenability has multiple, can arrange according to different strategies, such as, method to set up can be: as long as have one in the PLMN that supports of this eNB at least to support Emmergency log-on, then put this and be designated as support; The all PLMN supported as this eNB do not support Emmergency log-on, put this and are designated as and do not support.The concrete defining method arranging the instruction of this Emmergency log-on tenability can also be: as long as the MME in the PLMN that connects of this subordinate community has at least one to support Emmergency log-on, then think that this PLMN supports Emmergency log-on, as long as have at least one to support Emmergency log-on in the PLMN that this subordinate community connects, then put this Emmergency log-on tenability and be designated as support; The all PLMN connected when this subordinate community do not support Emmergency log-on, put this Emmergency log-on tenability and are designated as and do not support.
As another embodiment of the present invention, the Emmergency log-on tenability instruction related in said method embodiment can also be expanded, this instruction can indicate different reason respectively and whether the UE entering constrained state can carry out Emmergency log-on, correspondingly, the UE entering constrained state due to different reason can carry out community selection with reference to corresponding ability instruction.Above-mentioned reason can comprise: do not have usim card, authentication not invalid etc. by, usim card.
S402:UE receives and reads cell system broadcast, knows that this subordinate community is to the tenability of Emmergency log-on, and service access is carried out in the community of Emmergency log-on to select one to support according to above-mentioned tenability.
S403:UE initiates urgency traffic in selected community.In RRC (Radio Resource Control, wireless heterogeneous networks) connection establishment process, be urgent to eNB report access reason.
In the process, UE can inform eNB by different modes, and whether it is restricted mode, specifically with reference to the method in the step S303 in the corresponding embodiment of figure 3, can not repeat them here.
S404:eNB detects that the access reason of UE is urgent, judges connection establishment request whether by restricted mode UE is initiated, for UE selects to support that the PLMN of this business connects.
Inform to be whether the distinct methods of restricted mode corresponding to UE in S403, eNB judges that the method whether connection establishment request is initiated for restricted mode UE is also different, specifically with reference to the method in the step S304 in the corresponding embodiment of figure 3, can not repeat them here.
The PLMN system of selection of eNB to normal mode UE can be: the PLMN that the PLMN that eNB selects UE to report accesses as urgency traffic; Afterwards, in selected PLMN for UE selects a MME to connect.
ENB selects the method for PLMN to comprise for restricted mode UE: the tenability of the PLMN connected that eNB stores according to self to Emmergency log-on, the PLMN of UE self selection, for UE selects PLMN to connect, specifically can comprise: if the PLMN that UE selects supports Emmergency log-on, then eNB selects this PLMN, otherwise, eNB in the PLMN supporting Emmergency log-on, at random for UE chooses a PLMN;
In addition, if in step S403, the MME that UE is registered before also reporting, then carry out in the process connected at selection PLMN, eNB can also in conjunction with the registered MME of UE, for UE selects suitable PLMN to connect, specifically can comprise: if the PLMN that UE selects supports Emmergency log-on, then eNB selects this PLMN; Otherwise, eNB can with reference to the registered MME of UE for UE selects one to support the PLMN of Emmergency log-on: if namely eNB obtains the registered MME of UE and PLMN belonging to this MME supports Emmergency log-on, eNB then selects this PLMN, otherwise, eNB in the PLMN supporting Emmergency log-on, at random for UE chooses a PLMN;
Afterwards, in selected PLMN for UE select can support that the MME of Emmergency log-on connects.
S405:UE successfully sets up urgency traffic.
In the present embodiment, on the one hand, its subordinate community can being broadcasted by base station in system broadcast message and whether can support Emmergency log-on, making the UE of restricted mode when carrying out urgency traffic, with reference to Emmergency log-on ability, PLMN and community selection can be carried out.Thus add urgency traffic be created as power, accelerate the Establishing process of urgency traffic; On the other hand, by reference to the tenability of each PLMN to Emmergency log-on, for subscriber equipment is directly selected to support that the PLMN of this Emmergency log-on connects, thus access speed and success rate that UE carries out urgency traffic can be improve.
As further embodiment of this invention, above-mentioned steps S401-S402; Or S403-S404 also can adopt flow process of the prior art to replace respectively, that is: can select only to adopt in above-mentioned steps S401-S402 the method provided to optimize in prior art subscriber equipment to the selection course of community, or only adopt the method provided in above-mentioned steps S403-S404 to optimize in prior art network side to the selection course of PLMN.Also the effect that certain raising UE carries out the access success rate of urgent call can be reached.
As shown in Figure 5, be the structural representation of a kind of base station that the embodiment of the present invention provides, this base station can be used in the function realizing base station in said method embodiment, comprising:
Receiving element 504: for receiving subscriber equipment by the network selective information that the subordinate community of urgency traffic sends can be supported;
Network selection unit 505: in access reason subscriber equipment being detected for after urgent, the PLMN connected according to network selective information and subordinate community to the tenability information of urgency traffic, for subscriber equipment is selected to support that the PLMN of urgency traffic connects.
This base station may further include:
Acquiring unit 501: for obtaining the network of base station connection to the tenability information of urgency traffic.
As further embodiment of this invention, this base station can also comprise:
Instruction setting unit 502: the network that the base station for obtaining according to acquiring unit 501 connects, to the tenability information of urgency traffic, arranges the tenability information of subordinate community to urgency traffic;
According to the tenability Information Selection of subordinate community to urgency traffic, transmitting element 503: for the tenability information of subordinate community to urgency traffic is sent to subscriber equipment, supports that urgency traffic access is carried out in the subordinate community of this urgency traffic to enable this subscriber equipment.
This tenability information can comprise: urgency traffic tenability indicates, and/or the instruction of Emmergency log-on tenability; Wherein, the instruction of urgency traffic tenability is used to indicate subordinate community and whether supports urgent call; The instruction of Emmergency log-on tenability is used to indicate subordinate community and whether supports Emmergency log-on.
As shown in Figure 6, be a kind of subscriber equipment that the embodiment of the present invention provides, this subscriber equipment can be used in the function realizing subscriber equipment in said method embodiment, comprising:
Acquiring unit 601: for obtaining the subordinate community of base station transmission to the tenability information of urgency traffic; Wherein, this tenability information can comprise: urgency traffic tenability indicates, and/or the instruction of Emmergency log-on tenability; Wherein, the instruction of urgency traffic tenability is used to indicate subordinate community and whether supports urgent call; The instruction of Emmergency log-on tenability is used to indicate subordinate community and whether supports Emmergency log-on.
Cell selection unit 602: for supporting that urgency traffic access is carried out in the subordinate community of above-mentioned urgency traffic according to above-mentioned tenability Information Selection.
As further embodiment of this invention, this subscriber equipment may further include:
User device type notification unit 603, for being restricted mode signals base by network selective information by the user type of subscriber equipment in this subordinate community, to make base station in access reason subscriber equipment being detected for after urgent, for this subscriber equipment is selected to support that the PLMN of Emmergency log-on connects.
It should be noted that in said apparatus embodiment, included unit is carry out dividing according to function logic, but is not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional unit, also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
Said method of the present invention and device embodiment, by eNB in system broadcast message broadcast cell to the tenability of urgency traffic, make UE in selection community process as a reference, thus ensure that UE can access the network supporting urgency traffic fast when initiating urgency traffic.Simultaneously, in cell system broadcast only broadcast cell to the tenability of urgency traffic, namely all PLMN of supporting this subordinate community are combined to the instruction of the tenability of urgency traffic, instead of broadcast all PLMN of supporting this subordinate community respectively to the tenability of urgency traffic, save system broadcasts expense; And report parameter and each PLMN to the tenability of urgency traffic by eNB in conjunction with UE, for UE selects suitable network to connect, turn avoid UE cannot the suitable PLMN of selecting properly and cause the delay that unnecessary signaling consumption brings by means of only the tenability in broadcast, accelerates the Establishing process of urgency traffic.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention can by hardware implementing, and the mode that also can add necessary general hardware platform by software realizes.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions and perform method described in each embodiment of the present invention in order to make a computer equipment (can be personal computer, server, or the network equipment etc.).
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (17)
1. a method for network selection, is characterized in that, comprising:
Receive subscriber equipment by the network selective information that the subordinate community of urgency traffic sends can be supported;
In the access reason described subscriber equipment being detected for after urgent, the public land mobile network PLMN connected according to described network selective information and described subordinate community to the tenability information of urgency traffic, for described subscriber equipment is selected to support that the PLMN of described urgency traffic connects;
Wherein, described reception subscriber equipment is by can support also to comprise the network selective information that the subordinate community of urgency traffic sends before:
According to the tenability information of PLMN to urgency traffic that described subordinate community connects, the tenability information of described subordinate community to urgency traffic is set;
The tenability information of described subordinate community to urgency traffic is sent to described subscriber equipment, supports that urgency traffic access is carried out in the described subordinate community of described urgency traffic to enable described subscriber equipment according to the tenability Information Selection of described subordinate community to urgency traffic.
2. method according to claim 1, is characterized in that, selects to support that the PLMN of described urgency traffic connects for described subscriber equipment, also comprise before described:
The PLMN of described subordinate community connection is obtained to the tenability information of urgency traffic from mobile management entity MME by S1 interface message.
3. method according to claim 1, it is characterized in that, the tenability information of described PLMN to urgency traffic comprises: to the tenability information of urgent call; And/or the tenability information to Emmergency log-on.
4. method according to claim 3, is characterized in that,
The tenability information of described subordinate community to urgency traffic comprises: urgency traffic tenability indicates, and/or the instruction of Emmergency log-on tenability;
Wherein, described urgency traffic tenability instruction is used to indicate described subordinate community and whether supports urgent call; Described Emmergency log-on tenability instruction is used to indicate described subordinate community and whether supports Emmergency log-on.
5. method according to claim 4, is characterized in that, describedly arranges the tenability information of described subordinate community to urgency traffic according to the tenability information of described PLMN to urgency traffic, specifically comprises:
When having a support urgent call in the PLMN that described subordinate community connects at least, then put described urgency traffic tenability and be designated as support, otherwise, when all PLMN connected connected when described subordinate community do not support urgent call, put described urgency traffic tenability and be designated as and do not support;
Or, when the MME in the PLMN that described subordinate community connects has a support urgent call at least, then think that described PLMN supports urgent call; Otherwise, when having at least one to support urgent call in the PLMN that described subordinate community connects, then put described urgency traffic tenability and be designated as support, otherwise, when the PLMN connected when described subordinate community does not support urgent call, put described urgency traffic tenability and be designated as and do not support.
6. method according to claim 4, is characterized in that, describedly arranges the tenability information of described subordinate community to urgency traffic according to the tenability information of described PLMN to urgency traffic, specifically comprises:
When having a support Emmergency log-on in the PLMN that described subordinate community connects at least, then put described Emmergency log-on tenability and be designated as support, otherwise, when all PLMN connected connected when described subordinate community do not support Emmergency log-on, put described Emmergency log-on tenability and be designated as and do not support;
Or, when the MME in the PLMN that described subordinate community connects has a support Emmergency log-on at least, then think that described PLMN supports Emmergency log-on; Otherwise, when having at least one to support Emmergency log-on in the PLMN that described subordinate community connects, then put described Emmergency log-on tenability and be designated as support, otherwise, when the PLMN connected when described subordinate community does not support Emmergency log-on, put described Emmergency log-on tenability and be designated as and do not support.
7. method according to claim 4, is characterized in that, described urgency traffic tenability instruction is used to indicate described subordinate community and whether supports urgent call, specifically comprises:
Described urgency traffic tenability instruction is for representing that described subordinate community is to PS urgent call, and whether CS urgent call is supported, to make not support that the PLMN of PS urgent call can access the urgent call of described subscriber equipment, and carry out the urgent call of circuit domain by the mode assist said user equipment of circuit switched fallback CSFB.
8., according to method described in any one in claim 1-3, it is characterized in that,
Described network selective information, specifically comprises: the information of the PLMN that described subscriber equipment is selected;
The described PLMN connected according to described network selective information and described subordinate community, to the tenability information of urgency traffic, for described subscriber equipment is selected to support that the PLMN of described urgency traffic connects, specifically comprises:
If a described PLMN supports described urgency traffic, then select a described PLMN, otherwise, in the PLMN supporting described urgency traffic, choose a PLMN for described subscriber equipment at random; Afterwards, connected by the MME under selected PLMN.
9., according to method described in any one in claim 1-3, it is characterized in that,
Described network selective information, comprising: the information of the PLMN that described subscriber equipment is selected, and the information of MME registered before described subscriber equipment;
The described PLMN connected according to described network selective information and described subordinate community, to the tenability information of urgency traffic, for described subscriber equipment is selected to support that the PLMN of described urgency traffic connects, specifically comprises:
If a described PLMN supports described urgency traffic, then select a described PLMN; Otherwise, be that described subscriber equipment selects one to support the PLMN of described urgency traffic with reference to MME registered before described subscriber equipment, comprise: if PLMN supports described urgency traffic belonging to MME registered before subscriber equipment, then select a described PLMN, otherwise, in the PLMN supporting described urgency traffic, at random for UE chooses a PLMN; Afterwards, in selected PLMN for UE select can support that the MME of described urgency traffic connects.
10., according to method described in any one in claim 1-3, it is characterized in that,
Described network selective information, specifically comprises: the user device type of described subscriber equipment is restricted mode;
The described PLMN connected according to described network selective information and described subordinate community is to the tenability information of urgency traffic, for described subscriber equipment is selected to support that the PLMN of described urgency traffic connects, specifically comprise: the subscriber equipment for described restricted mode is selected to support that the PLMN of Emmergency log-on connects.
The method that 11. 1 kinds of networks are selected, is characterized in that, comprising:
Obtain the subordinate community of base station transmission to the tenability information of urgency traffic, the tenability information of PLMN to urgency traffic that described tenability information connects according to described subordinate community especially by described base station is arranged; Wherein, when having at least one to support urgent call in the PLMN that described subordinate community connects, then put this urgency traffic tenability information for supporting;
Can support that urgency traffic access is carried out in the described subordinate community of described urgency traffic according to described tenability Information Selection;
Described method also comprises:
By supporting that the described subordinate community of described urgency traffic sends network to described base station and selects message, to make described base station in access reason subscriber equipment being detected for after urgent, the PLMN connected according to described network selective information and described subordinate community to the tenability information of urgency traffic, for described subscriber equipment is selected to support that the PLMN of described urgency traffic connects.
12., according to method described in claim 11, is characterized in that,
The described tenability information to urgency traffic comprises: urgency traffic tenability indicates, and/or the instruction of Emmergency log-on tenability;
Wherein, described urgency traffic tenability instruction is used to indicate described subordinate community and whether supports urgent call; Described Emmergency log-on tenability instruction is used to indicate described subordinate community and whether supports Emmergency log-on.
13. according to claim 11 or 12 method, it is characterized in that, describedly can support that urgency traffic access is carried out in the described subordinate community of described urgency traffic according to described tenability Information Selection, comprising:
Be restricted mode signals base by network selective information by user type in described subordinate community, detecting that access reason is for after urgent, selects to support that the PLMN of Emmergency log-on connects to make described base station.
14. according to claim 11 or 12 method, it is characterized in that, the subordinate community that described acquisition base station sends, to the tenability information of urgency traffic, comprising: receive and read cell system broadcast, obtains the subordinate community of base station transmission to the tenability information of urgency traffic.
15. 1 kinds of base stations, is characterized in that, comprising:
Receiving element: for receiving subscriber equipment by the network selective information that the subordinate community of urgency traffic sends can be supported;
Network selection unit: in the access reason described subscriber equipment being detected for after urgent, the PLMN connected according to described network selective information and described subordinate community to the tenability information of urgency traffic, for described subscriber equipment is selected to support that the PLMN of described urgency traffic connects;
Also comprise:
Acquiring unit: for obtaining the network of described base station connection to the tenability information of urgency traffic;
Instruction setting unit: the network that the base station for obtaining according to described acquiring unit connects, to the tenability information of urgency traffic, arranges the tenability information of described subordinate community to urgency traffic;
According to the tenability Information Selection of described subordinate community to urgency traffic, transmitting element: for the tenability information of described subordinate community to urgency traffic is sent to described subscriber equipment, supports that urgency traffic access is carried out in the described subordinate community of this urgency traffic to enable described subscriber equipment.
16. 1 kinds of subscriber equipmenies, is characterized in that, comprising:
Acquiring unit: for obtaining the subordinate community of base station transmission to the tenability information of urgency traffic, the tenability information of PLMN to urgency traffic that described tenability information connects according to described subordinate community especially by described base station is arranged; Wherein, when having at least one to support urgent call in the PLMN that described subordinate community connects, then put this urgency traffic tenability information for supporting;
Cell selection unit: for supporting that urgency traffic access is carried out in the described subordinate community of described urgency traffic according to the tenability Information Selection of above-mentioned subordinate community to urgency traffic;
Described subscriber equipment also comprises: transmitting element, can support that the described subordinate community of described urgency traffic sends network to described base station and selects message for passing through, to make described base station in access reason subscriber equipment being detected for after urgent, the PLMN connected according to described network selective information and described subordinate community to the tenability information of urgency traffic, for described subscriber equipment is selected to support that the PLMN of described urgency traffic connects.
17., according to subscriber equipment described in claim 16, is characterized in that, also comprise:
User device type notification unit, be restricted mode signals base by network selective information by the user type of described subscriber equipment in described subordinate community, to make described base station in the access reason described subscriber equipment being detected for after urgent, for described subscriber equipment is selected to support that the PLMN of Emmergency log-on connects.
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| PCT/CN2009/071765 WO2010130088A1 (en) | 2009-05-12 | 2009-05-12 | Method and apparatus of network selection |
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| CN102369757B true CN102369757B (en) | 2015-09-30 |
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| WO2016081098A1 (en) * | 2014-11-17 | 2016-05-26 | Intel IP Corporation | An apparatus and method for network assisted domain selection |
| US10425887B2 (en) * | 2015-11-10 | 2019-09-24 | Blackberry Limited | Gateway selection controlled by network |
| WO2018145252A1 (en) * | 2017-02-07 | 2018-08-16 | 华为技术有限公司 | Method for network reselection and device |
| CN110972125A (en) * | 2019-11-27 | 2020-04-07 | 惠州Tcl移动通信有限公司 | Calling method, device, storage medium and terminal |
| CN113973272B (en) * | 2021-12-16 | 2022-05-03 | 荣耀终端有限公司 | Method, apparatus and storage medium for emergency call |
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| CN1402951A (en) * | 1999-10-04 | 2003-03-12 | 艾利森电话股份有限公司 | Broadcasting of service capabilities in cellular telecommunications network |
| CN101031135A (en) * | 2006-03-03 | 2007-09-05 | 华为技术有限公司 | Emergent calling method and system |
| CN101395949A (en) * | 2006-03-03 | 2009-03-25 | 交互数字技术公司 | Supporting emergency calls on a wireless local area network |
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| CN101296509B (en) * | 2007-04-28 | 2012-12-12 | 华为技术有限公司 | Method, system and related device for implementing urgent communication service |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1402951A (en) * | 1999-10-04 | 2003-03-12 | 艾利森电话股份有限公司 | Broadcasting of service capabilities in cellular telecommunications network |
| CN101031135A (en) * | 2006-03-03 | 2007-09-05 | 华为技术有限公司 | Emergent calling method and system |
| CN101395949A (en) * | 2006-03-03 | 2009-03-25 | 交互数字技术公司 | Supporting emergency calls on a wireless local area network |
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