Summary of the invention
Purpose of the present invention is intended to solve at least one of above-mentioned technological deficiency, particularly make the UE of existing home network carrying and core net carrying (such as the EPS carrying etc.) can when switching to other macro base stations, can only process the core net carrying of having set up, carry and do not process home network.
For achieving the above object, one aspect of the present invention proposes a kind of changing method, may further comprise the steps: Mobility Management Entity receives the handover request of user equipment (UE), and described UE has set up home network carrying and core net carrying by Home eNodeB; Described Mobility Management Entity judges according to described handover request whether target access entity is macro base station; If described Mobility Management Entity judges that described target access entity is macro base station, then described Mobility Management Entity is only set up the existing core net carrying of described UE.
The present invention also proposes a kind of switched system, comprises Mobility Management Entity, UE and target access entity, and described UE is used for triggering handoff procedure, and described UE has set up home network carrying and core net carrying by Home eNodeB; Described Mobility Management Entity, be used for receiving the handover request of described UE, and judge according to described handover request whether target access entity is macro base station, if judge that described target access entity is macro base station, then indicate described target access entity only to set up the existing core net carrying of described UE; Described target access entity is used for only setting up the existing core net carrying of described UE according to the indication of described Mobility Management Entity.
The present invention also proposes a kind of Mobility Management Entity, comprise receiver module, module, described receiver module are set up in macro base station judge module and core net carrying, be used for receiving the handover request of described UE, described UE has set up home network carrying and core net carrying by Home eNodeB; Described macro base station judge module is used for judging according to described handover request whether target access entity is macro base station; Module is set up in described core net carrying, is used for only setting up the existing core net carrying of described UE after described macro base station judge module judges that described target access entity is macro base station.
The present invention also proposes a kind of changing method, may further comprise the steps: the described Mobility Management Entity that target access entity receiving mobility management entity sends requires the information of the carrying of described target access entity foundation; Described target access entity judges according to the information of described carrying whether described Mobility Management Entity requires the described target access entity network carrying that founds a family; Require to found a family the network carrying if described target access entity is judged, and described target access entity is not connected on the home network, then described target access entity is not set up described home network carrying.
In legacy system, described access entity can be arranged in RNC and NodeB, can be arranged in eNodeB at the entity of access described in the LTE system.
The present invention also proposes a kind of access entity, comprise that beared information receiver module, home network carry judge module and module is set up in carrying, described beared information receiver module, the described Mobility Management Entity that is used for the transmission of receiving mobility management entity requires the information of the carrying of described access entity foundation; Described home network carrying judge module is used for judging according to the information of described carrying whether described Mobility Management Entity requires the described access entity network carrying that founds a family; Module is set up in described carrying, be used for judging at described home network carrying judge module requiring to found a family the network carrying, and described access entity is only set up the core net carrying, and do not set up described home network carrying when not being connected on the home network.
Can only set up the core net carrying so that UE switches to the macro base station process target access entity from Home eNodeB by the present invention, and the network carrying that do not found a family, thereby the unnecessary wasting of resources reduced.
The aspect that the present invention adds and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Embodiment
The below describes embodiments of the invention in detail, and the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.Need to prove that also following examples can read with reference to figure 2, each step related to the present invention only is described in the following embodiments, other steps do not elaborate.
Following examples are described with the example that switches to of UE in the EPS system, but need to prove the switching of UE in other system such as traditional 3G system, or the switching between these systems also can be used the present invention, its principle is identical with principle of the present invention, the message difference that difference only is network entity and mutually transmits.
Embodiment one,
Can whether be macro base station to target eNode B by target MME in this embodiment, if being judged as among the EPS Bearer context (EPS carry content) that macro base station and source MME send not only has the home network carrying also to have EPS to carry, the related news that then this moment, target MME can only carry EPS send to target eNode B, and no longer send the information of home network carrying.In this embodiment, also can use the scene constant with MME, namely source MME and target MME are a MME, and the information interaction of omitting like this between source MME and the target MME gets final product, the scene that other steps and MME change is identical, so following examples just are described as an example of the scene of MME change example.
As shown in Figure 3, the changing method flow chart for the embodiment of the invention one may further comprise the steps:
Step S301, source MME receives the handover request of UE, and wherein UE has set up home network carrying and EPS carrying by HeNB.
Step S302, source MME will send to target MME for the carrying of home network and the relevant information that is used for the carrying of EPS system by Forward Relocation Request message.
Step S303, target MME judge whether target eNode B is macro base station.Target MME judges by local configuration data whether target eNode B is macro base station particularly.
Step S304, if target MME judges that target eNode B is macro base station, then MME only sets up the existing EPS carrying of described UE.Be that target MME will require the information of the EPS carrying of target BS foundation to send to target eNode B by Handover Request message, carrying then is not filled up in the EPS Bearer to Setup parameter for home network.How distinguishing which carrying for target MME is the home network carrying, and which carrying is that the EPS carrying the present invention proposes various ways, for example,
Mode one, target MME can pass through the UE context determination, comprise each in the UE context and activate the parameter that PDN (packet data network) connects, the APN that uses when the APN in USE by wherein indicates this PDN and sets up, by this APN, target MME can judge the whether APN of home network bearer connection of this PDN.
Mode two, target MME can pass through the UE context determination, comprises each in the UE context and activates the parameter that PDN connects, and can be its newly-increased flags parameters, represents that this PDN is for connecting home network carrying or EPS carrying.When this sign was set up in this PDN connection, MME arranged by the source.
Mode three, target MME also can judge by some the connection parameters in the UE context, for example, by with some parameter in the UE context, such as PDN GW Address in Use (control plane), when PDN GW TEID for S5/S8 (control plane), IP address for S1-u, TEID for S1u, Charging Id etc. set up in this PDN connection, be set to special value (such as 0), can indicate this PDN and be connected to the PDN that is connected to home network.Such as, the ChargingId of home-network linkups can be set to a special value, and 0, represent that operator does not connect charging to this PDN; Perhaps, IP address for S1-u is set to 0, because SGW (gateway) function of the PDN of home network carrying may be in Home eNodeB, just do not need external SGW this moment, just need not the IP address yet.
Embodiment two,
As shown in Figure 4, be the changing method flow chart of the embodiment of the invention two, this embodiment is different from embodiment one, is judged by source MME in this embodiment, if source MME judges that target eNode B is macro base station, the information of then no longer home network being carried sends to target MME.This embodiment is applied to the situation that MME changes in addition, and this embodiment comprises dimly step:
Step S401, source MME receives the handover request of UE, and wherein UE has set up home network carrying and EPS carrying by HeNB.
Step S402, source MME judge the target eNode B that target eNodeB Identity indicates, and judge whether it is macro base station.Equally in this embodiment, the present invention has also proposed multiple judgment mode, as can be in the MME of source the classification of configurating base station, namely whether the classification of configuration target MME subordinate's base station in the MME of source is macro base station so that source MME can judge target eNode B.Perhaps, in other embodiments, can can judge whether target eNode B is macro base station according to the indication of HeNB by source MME, learn that this target eNode B is macro base station or HeNB by UE when the cell measurement, and be whether to be that macro base station is indicated to HeNB with this target eNode B in the reporting measurement result.
Step S403, if the judgement target eNode B is macro base station, then source MME is when sending Forward Relocation Request message to target MME, then only add the relevant information that EPS carries in the MME UEcontext parameter in this message, and the relevant information of not adding the home network carrying, the message of the network carrying that namely will not found a family is indicated to target MME.
For above-mentioned two embodiment, the invention allows for a kind of switched system.As shown in Figure 5, be the switched system structural representation of the embodiment of the invention.This system comprises MME 100, UE 200 and target eNode B 300.UE 200 is used for triggering handoff procedure, and UE 200 has set up home network carrying and EPS carrying by HeNB.MME 100 is used for receiving the handover request of UE 200, and judges according to this handover request whether target eNode B 300 is macro base station, if judge that target eNode B 300 is macro base station, then indicating target eNodeB 300 only sets up UE 200 existing EPS carryings.Target eNode B 300 is used for only setting up UE 200 existing EPS carryings according to the indication of MME 100.
MME 100 can judge UE 200 existing home network carrying and EPS carryings according to the parameter in the UE context, and only indicating target eNodeB 300 sets up UE 200 existing EPS carryings.Wherein the parameter in the UE context can comprise APN, carrying ID or connect parameter etc.
In one embodiment of the invention, MME 100 is source MME, and whether the local configuration determination target eNode B 300 that is used for according to handover request and source MME is macro base station.Perhaps judge according to the indication of HeNB whether target eNode B 300 is macro base station, wherein learn whether target eNode B 300 is macro base station by UE 200 when the cell measurement, and with its indication to HeNB.
In an embodiment of the present invention, MME 100 comprises receiver module 110, and module 130 is set up in macro base station judge module 120 and EPS carrying.Receiver module 110 is used for receiving the handover request of UE 200, and UE 200 has set up home network carrying and EPS carrying by HeNB.Macro base station judge module 120 is used for judging according to handover request whether target eNode B 300 is macro base station.The EPS carrying is set up module 130 and is used for after macro base station judge module 120 judges that target eNode B 300 is for macro base station, and only indicating target eNodeB 300 sets up UE 200 existing EPS carryings.
Wherein, EPS carrying is set up module 130 according to the APN in the UE context, carrying ID or is connected parameter and judges UE 200 existing home networks carrying and EPS carryings, the EPS carrying set up module 130 only indicating target eNodeB 300 set up UE 200 existing EPS carryings.
Wherein, whether macro base station judge module 120 is macro base station according to the local configuration determination target eNode B 300 of handover request and target MME.
In another embodiment of the present invention, when MME 100 is source MME, macro base station judge module 120 judges according to the indication of HeNB whether target eNode B 300 is macro base station, wherein learns whether target eNode B 300 is macro base station by UE 200 when the cell measurement, and indication is to HeNB.
Embodiment three,
As shown in Figure 6, changing method flow chart for the embodiment of the invention three, this embodiment is different from embodiment one and two, judge by target eNode B whether system includes the home network carrying in the carrying that will set up of its indication in this embodiment, if home network carrying is arranged but it is not connected to home network, then the target eNode B network carrying that do not found a family feeds back to MME with this message and reason simultaneously.In this embodiment, the scene that had both changed applicable to MME is also applicable to the immovable scene of MME, and this embodiment comprises:
Step S601, the MME that target eNode B reception MME sends requires the information of the carrying of target eNode B foundation.
Step S602, target eNode B judges according to the information of carrying whether MME requires the target eNode B network carrying that founds a family.In this embodiment, target eNode B can judge whether set up the needed information of carrying normal, if judge that to set up the needed information of carrying undesired, namely target eNode B can't be set up the EPS carrying according to this information, judges that then this is carried as the home network carrying.If for example the IP address of the SGW of the S1-U interface of carrying is 0, judge that then this is carried as the home network carrying.Perhaps, if be not included as up IP address and the TEID of the S1-U interface that carrying distributes, judge also that then this is carried as the home network carrying.Certainly those skilled in the art can expect other judgment modes for example according to above-mentioned, and these modes are also contained within protection scope of the present invention.
Step S603, the network carrying if target eNode B judge to require to found a family, and target eNode B is not connected on the home network, and then target eNode B is not set up described home network carrying.
Step S604, will not found a family message and the reason of the network carrying of target eNode B notified described MME.Particularly, by the not carrying to family's network of foundation of Handover Request Acknowledge message informing MME, and the reason that does not have to set up is " not being connected to home network ".
For this embodiment, the present invention also proposes a kind of eNodeB.As shown in Figure 7, be the structural representation of embodiment of the invention eNodeB.This eNodeB 700 comprises that beared information receiver module 710, home network carry judge module 720 and module 730 is set up in carrying.Beared information receiver module 710 requires the information of the carrying of target eNode B 700 foundation for the MME that receives the MME transmission.Home network carrying judge module 720 is used for judging according to the information of carrying whether MME requires target eNode B 700 network carrying that founds a family.Carrying is set up module 730 and is used for judging at family's network carrying judge module 720 and requires to found a family the network carrying, and target eNode B 700 is only set up the EPS carrying, and do not set up described home network carrying when not being connected on the home network.
As one embodiment of the present of invention, home network carrying judge module 720 judges whether the needed information of foundation carrying is normal, and needed information is undesired if carrying is set up in judgement, judges that then this is carried as home network and carries.For example, home network carrying judge module 720 can judge whether the IP address of gateway SGW of the S1-U interface of carrying is 0, if be 0 then judge that this is carried as the home network carrying; Perhaps, can judge whether to comprise up IP address and the TEID of the S1-U interface that promising carrying distributes, if do not comprise then judge the described home network carrying that is carried as.
As one embodiment of the present of invention, eNodeB 700 also comprises notification module 740, notifies to MME for message and the reason of the network carrying that will not found a family.
Above-described embodiment has illustrated the implementation situation of the present invention in the EPS system, and eNodeB is the access entity in the above-described embodiments.PS in legacy system switches, too applicable the present invention.If be applied in during the PS of legacy system switches, then MME refers to SGSN in the legacy system in the said method, and eNodeB refers to the wireless access network RAN (the access entity in the legacy system) in the legacy system.Adopt between source node and the destination node and the present invention in different message name transmit the bearing resource that needs goal systems foundation when switching, but this does not affect the enforcement of the present invention in legacy system.
Equally, above-described embodiment is also applicable to the switching between EPS system and the legacy system.For example, if switch to legacy system from the EPS system, then the network entity in the origin system in the said method is MME and Home eNodeB, and the network entity in the goal systems is SGSN and wireless access network RAN.Again for example, if switch to the EPS system from legacy system, the network entity in the origin system in the said method is SGSN and wireless access network RAN, and the network entity in the goal systems is MME and eNodeB.And adopt between the network entity in the origin system and the network entity in the goal systems and the present invention in different message name transmit the bearing resource that needs goal systems foundation when switching, but this does not affect enforcement of the present invention.From foregoing description, can find out, the title of the message that only is network entity and transmits is each other distinguished in switching between different system, but its principle is identical with principle of the present invention, therefore the present invention is not limited to above-mentioned two kinds of systems, and the evolution system of development also can be used the present invention afterwards.The structure of each map network entity is also similar with the structure shown in Fig. 5 of the present invention and Fig. 7, does not repeat them here.
By the present invention can so that in the handoff procedure goal systems can only set up terminal to core net carrying (such as the EPS carrying), and do not set up terminal to family's network carrying, thereby reduce the unnecessary wasting of resources.Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is by claims and be equal to and limit.