CN101127934A - Mobile communication system, core network apparatus, and mobile communication terminal - Google Patents
Mobile communication system, core network apparatus, and mobile communication terminal Download PDFInfo
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- CN101127934A CN101127934A CNA2007101416033A CN200710141603A CN101127934A CN 101127934 A CN101127934 A CN 101127934A CN A2007101416033 A CNA2007101416033 A CN A2007101416033A CN 200710141603 A CN200710141603 A CN 200710141603A CN 101127934 A CN101127934 A CN 101127934A
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Abstract
A mobile communication system for relaying user data includes a plurality of base station apparatus and a core network apparatus. Each of the base station apparatus forms a cell for connecting to a terminal through a wireless link. The core network apparatus can be connected to the base station apparatus. Even when the terminal moves between the base station apparatus while the terminal is in an active mode in which the terminal is communicating, the core network apparatus which is connected to the terminal keeps itself connected to the terminal.
Description
The application is based on the priority of the Japanese patent application No.2007-030562 of Japanese patent application No.2006-222514 that also requires to submit on August 17th, 2006 and submission on February 9th, 2007, at this in conjunction with its full content for your guidance.
Technical field
The present invention relates to mobile communication system.
Background technology
At present, 3GPP (third generation partner program) just is being devoted to study LTE (Long Term Evolution) and SAE (System Architecture Evolution).
An important theme in 3GPP-LTE/SAE research is to solve the control that UPE relocates (user plane entity relocates).The control that UPE relocates is that (for example, referring to JP-A2003-348661) controlled in the switching of the UPE that will be connected with UE (user subject).
The UPE functional entity is a kind of entity to controlling towards eNB (eNodeB) direction or its reciprocal user plane handles, and this UPE functional entity is to define in the core architecture of SAE.The example of UPE functional entity comprises paging startup, header-compressed, encryption.On the node that the UPE functional entity can be positioned to and MME (mobile management entity) functional entity is common, or be positioned on the dedicated node.
S1 interface between core net and the Access Network interconnects UPE in the core net and the eNB in the Access Network according to full-mesh topology via IP (Internet protocol) network.Therefore, physically, eNB can be connected to all UPE among the PLMN (Public Land Mobile Nerwork).Even the scope of the eNB that UPE can connect logically is restricted, and be restricted to the range of management of UPE, still eNB can be connected to neatly any one UPE that its range of management covers this eNB.
The UE that stays in LTE is connected to single UPE at certain time point.Relocate by UPE, change the UPE that is connected with this UE.Usually, when UE is in idle pulley (LTE_IDLE), UPE takes place relocate.Idle pulley is a kind of standby mode, and UE does not communicate in this standby mode.Even relocate although preferably also can carry out UPE in the enable mode (LTE_ACTIVE) that UE is just communicating, this UPE relocates and should be avoided as much as possible, needing to avoid the complicated process that relocates.
Top correlation technique faces following point:
According to 3GPP-LTE/SAE, can connect eNB and UPE via S1 interface flexibly.Yet how to define UPE and they range of management and as why not the range of management of UPE is limited to whole PLMN but is defined as its part, all be unclear.In order to realize subscriber data traffic better, the frequency that UPE relocates appears in the time of should considering how to be reduced in the range of management that limits UPE.
Summary of the invention
The purpose of this invention is to provide a kind of mobile communication system, be used for suitably connecting user plane entity and eNodeB, so that realize better subscriber data traffic.
To achieve these goals, the mobile communication system that is used to transmit user data according to the present invention comprises a plurality of base station equipments and equipment of the core network.
Each base station equipment forms the sub-district that is connected with terminal via Radio Link.Equipment of the core network can be connected to these base station equipments.
When terminal during at enable mode, this terminal is just communicating, though the terminal under being in enable mode between base station equipment when mobile, the equipment of the core network that is connected with this terminal also can keep it self with being connected of this terminal.
Above and other objects of the present invention, feature and advantage will become clearly from the narration of hereinafter with reference accompanying drawing, and these accompanying drawings have been described example of the present invention.
The accompanying drawing summary
Fig. 1 is the block diagram of mobile communication system according to an exemplary embodiment of the present invention;
Fig. 2 is the block diagram according to the equipment of the core network of the mobile communication system of exemplary embodiment;
Fig. 3 is the block diagram according to the terminal of the mobile communication equipment of exemplary embodiment;
Fig. 4 has shown the conventional UPE service or the block diagram of pool area, and this UPE service or pool area have fixing/strict UPE and relocate the border on service or pool area border;
Fig. 5 has shown the block diagram by the coverage of UPE configuration, and that experiences on the pool area border before being used to avoid relocates the problem that the border produces by fixing/strict UPE;
Fig. 6 has shown the block diagram (these coverages are supposed to have common configuration) of overlapping coverage, and the infall of a plurality of coverages of these coverages between contiguous UPE has been set up implicit " pool area ";
Fig. 7 has shown that when UPE left from service, these coverages allowed relocating at difference by the free time of UPE and the coverage of enable mode (this depends on the UE state: free time or activation);
Fig. 8 is the block diagram of the corresponding diagram 7.7-1 that comprises in proposal;
Fig. 9 is the block diagram of the corresponding diagram 7.7-2 that comprises in proposal.
Being described in detail of preferred embodiment
Come specifically to narrate exemplary embodiment of the present invention below with reference to accompanying drawings.
Fig. 1 has shown the block diagram of mobile communication system according to an exemplary embodiment of the present invention.As shown in fig. 1, mobile communication equipment comprises equipment of the core network (MME/UPE) 11
1, 11
2And base station equipment (eNB) 12
1To 12
8Equipment of the core network 11
1, 11
2With base station equipment 12
1To 12
8Via IP network 14, be connected with each other according to full-mesh topology.
Each equipment of the core network 11
1, 11
2Comprise the user plane entity of carrying out user plane handles and the mobile management entity of carrying out the terminal mobile management.Equipment of the core network 11
1, 11
2Be connected to terminal 13 via base station equipment 12, and processing is sent to the user data of terminal 13 and the user data of sending here from terminal 13.Each equipment of the core network 11
1, 11
2Need not to be constructed to individual node, but can construct in other mode.For example, each equipment of the core network 11
1, 11
2User plane entity and mobile management entity can be installed in separately the node.In this case, can consider as equipment of the core network 11 by the node that cluster is such.
Because equipment of the core network 11
1, 11
2With base station equipment 12
1To 12
8Be connected with each other according to full-mesh topology, therefore, equipment of the core network 11
1, 11
2Physically can be to all base station equipments 12
1To 12
8Send data and reception from all base station equipments 12
1To 12
8Data.Yet, at each equipment of the core network 11
1, 11
2In be provided be used for logically limiting can connected base station equipment 12 range of management, thereby alleviated equipment of the core network 11
1, 11
2The requirement of disposal ability, memory capacity and function.
At each equipment of the core network 11
1, 11
2In the range of management that is provided with comprise respectively and be defined as follows range of management, promptly be in enable mode under the relevant range of management of terminal 13, be in idle pulley under the relevant range of management of terminal 13.Enable mode is meant the pattern of terminal ongoing communication, and idle pulley is meant the pattern that terminal does not communicate.The range of management relevant with terminal 13 under being in enable mode is called as the enable mode coverage, and the range of management relevant with terminal 13 under the idle pulley is called as the idle pulley coverage.The enable mode coverage is wider than idle pulley coverage.The frequency that the user plane entity of therefore, carrying out under enable mode is switched (UPE relocates) will be lower than the switching frequency that the UPE that carries out relocates under idle pulley.
As shown in fig. 1, be equipment of the core network 11
1Defined idle pulley coverage 15
1With enable mode coverage 16
1, be equipment of the core network 11
2Defined idle pulley coverage 15
2With enable mode coverage 16
2
Idle pulley coverage 15
1Comprise base station equipment 12
2To 12
4, enable mode coverage 16
1Comprise base station equipment 12
1To 12
5 Idle pulley coverage 15
2Comprise base station equipment 12
5To 12
7, enable mode coverage 16
2Comprise base station equipment 12
4To 12
8
Equipment of the core network 11 is managed idle pulley coverage 15 and enable mode coverage 16 respectively, and this enable mode coverage 16 is more wider than idle pulley coverage 15.
For via the base station in idle pulley coverage 15 12
2To 12
4And the terminal 13 that links to each other with equipment of the core network 11, as long as this terminal 13 that is under the idle pulley is to be arranged in idle pulley coverage 15, equipment of the core network 11 just keeps it self to be connected with terminal 13.
When the terminal under the idle pulley 13 moves to outside the border of idle pulley coverage 15, the connection of terminal 13 just from the equipment of the core network 11 as the idle pulley coverage 15 in source, switches to the equipment of the core network 11 as the idle pulley coverage 15 of destination.This switching has caused from wherein being transformed into equipment of the core network 11 and unshowned anchor point user plane entity state connected to one another as the destination as the equipment of the core network 11 and unshowned anchor point user plane entity state connected to one another in source.
For via the base station equipment in enable mode coverage 16 12
1To 12
5And the terminal 13 that links to each other with equipment of the core network 11, as long as this terminal 13 under enable mode is arranged in enable mode coverage 16, equipment of the core network 11 just keeps it self to be connected with terminal 13.
When the terminal under the enable mode 13 moves to outside the border of enable mode coverage 16, the connection of terminal 13 just from the equipment of the core network 11 as the enable mode coverage 16 in source, switches to the equipment of the core network 11 as the enable mode coverage 16 of destination.This switching has caused from wherein being transformed into equipment of the core network 11 and unshowned anchor point user plane entity state connected to one another as the destination as the equipment of the core network 11 and unshowned anchor point user plane entity state connected to one another in source.
When terminal 13 when idle pulley is moved to outside the border of idle pulley coverage 15, the connection of terminal 13 is the equipment of the core network 11 from the idle pulley coverage 15 as the source is managed just, switches to the equipment of the core network 11 that the idle pulley coverage 15 as the destination is managed.
For example, suppose that terminal 13 under idle pulley, is subordinated to idle pulley coverage 15
1 Base station equipment 12
4The sub-district, move to and belong to idle pulley coverage 15
2 Base station equipment 12
5The sub-district.In this case, terminal 13 activates UPE and relocates, with its connection to idle pulley coverage 15 as the source
1The equipment of the core network 11 that manages
1, switch to idle pulley coverage 15 as the destination
2Manage equipment of the core network 11
2
When terminal 13 when enable mode is moved to outside the border of idle pulley coverage 15, terminal 13 is not carried out UPE and is relocated.When terminal 13 when enable mode is moved to outside the border of enable mode coverage 16, the connection of terminal 13 is the equipment of the core network 11 from the enable mode coverage 16 as the source is managed just, switches to the equipment of the core network 11 that the enable mode coverage 16 as the destination is managed.
For example, suppose that terminal 13 under enable mode, is subordinated to idle pulley coverage 15
1 Base station equipment 12
4The sub-district, move to and belong to idle pulley coverage 15
2 Base station equipment 12
5The sub-district.In this case, terminal 13 does not start UPE and relocates.Suppose that terminal 13 further is subordinated to enable mode coverage 16
1 Base station equipment 12
5The sub-district, move to and belong to enable mode coverage 16
2 Base station equipment 12
6The sub-district.In this case, terminal 13 starts UPE and relocates, will connect to the enable mode coverage 16 as the source
1The equipment of the core network 11 that manages
1, switch to enable mode coverage 16 as the destination
2The equipment of the core network 11 that manages
2
Fig. 2 has shown the block diagram according to the equipment of the core network of the mobile communication system of exemplary embodiment.As shown in Figure 2, equipment of the core network 11 comprises service region information memory 21 and is connected controller 22.
Service region information memory 21 is managed the information of idle pulley coverage and the information of enable mode coverage respectively.The information of idle pulley coverage comprises the tabulation of the base station equipment 12 of the idle pulley coverage that belongs to himself equipment.The information of enable mode coverage comprises the tabulation of the base station equipment 12 of the enable mode coverage that belongs to himself equipment.
For example, the equipment of the core network shown in Fig. 1 11
1 Enable mode coverage 16
1Information comprise base station equipment 12
1To 12
5Tabulation, equipment of the core network 11
1 Idle pulley coverage 15
1Information comprise base station equipment 12
2To 12
4Tabulation.
Connect controller 22 via the base station equipment in idle pulley coverage 15 12, be connected to the terminal 13 under idle pulley, even and move to any one base station equipment 12 in the idle pulley coverage 15 when terminal 13, as long as terminal 13 is arranged in idle pulley coverage 15, this connection controller 22 just keeps self being connected with terminal 13.
Connect controller 22 by the base station equipment 12 in enable mode coverage 16, be connected to the terminal under enable mode 13 that is connected with himself equipment, even and move to any one base station equipment 12 in the idle pulley coverage 16 when terminal 13, as long as terminal 13 is arranged in enable mode coverage 16, connects controller 22 and just keep self being connected with terminal 13.
Fig. 3 has shown the block diagram according to the terminal of the mobile communication system of exemplary embodiment.As shown in Figure 3, terminal 13 comprises state supervisor 31 and is connected controller 32.
When terminal 13 under idle pulley by state supervisor 31 management, when moving to outside the border of idle pulley coverage 15, connect controller 32 and will connect the equipment of the core network 11 that manages to idle pulley coverage 15, switch to the equipment of the core network 11 that the idle pulley coverage 15 as the destination is managed as the source.
When terminal 13 under enable mode by state supervisor 31 management, when moving to outside the border of enable mode coverage 16, connect controller 32 and will connect the equipment of the core network 11 that manages to enable mode coverage 16, switch to the equipment of the core network 11 that the enable mode coverage 16 as the destination is managed as the source.
As mentioned above, according to this exemplary embodiment, idle pulley coverage and enable mode coverage are managed respectively, and this enable mode coverage is wider than idle pulley coverage.When the terminal under the idle pulley moves to outside the border of idle pulley coverage, just carry out the switching between equipment of the core network.When the terminal under the enable mode moves to outside the border of enable mode coverage, just carry out the switching between equipment of the core network.Therefore, just limit the range of management of each user plane entity, and can carry out relocating of user plane entity well.
When between equipment of the core network, switching, exist the sub-district of terminal 13 may be comprised in a plurality of coverages.For example, when the terminal under the idle pulley 13 moves to outside the border of idle pulley coverage 15, wherein exist the sub-district of terminal 13 to be included in a plurality of idle pulleys coverage 15 superimposedly.Similarly, when the terminal under the enable mode 13 moves to outside the border of enable mode coverage 16, wherein exist the sub-district of terminal 13 to be included in a plurality of enable modes coverage 16 superimposedly.In this case, can be in view of the load condition of each equipment of the core network 11, the equipment of the core network 11 of selecting the connection of terminal 13 to switch to.By this way, can disperse, the load of homogenizing on equipment of the core network 11.For example can judge the load condition of each equipment of the core network 11 according to the quantity of the terminal 13 that is connected with equipment of the core network 11.If the quantity of the terminal 13 that is connected with equipment of the core network 11 is bigger, just judge that the load on the equipment of the core network 11 is higher.Based on the history that terminal 13 moves in the past, can predict terminal 13 moving subsequently, and can move according to the terminal 13 of prediction and select equipment of the core network 11, so that reduce the quantity of switching.Like this, just can reduce the switching frequency of equipment of the core network 11.Based on moving of prediction, select equipment of the core network 11 as first equipment of the core network, if the load on this equipment of the core network 11 is very high, can select next equipment of the core network 11 based on moving of prediction so.
When terminal 13 when enable mode is moved to outside the border of idle pulley coverage 15, between equipment of the core network 11, do not start and switch.Subsequently, terminal 13 can be changed into idle pulley.In this case, terminal 13 can start the handover operation that its connection is switched to the connection of following equipment of the core network 11, and 11 pairs of terminals of this equipment of the core network, 13 present residing idle pulley coverages manage.By this way, the terminal 13 that turns back to idle pulley from enable mode can be connected to following equipment of the core network 11, this equipment of the core network 11 has covered terminal 13 present residing idle pulley coverages.
In this exemplary embodiment, enable mode coverage 16 is restricted to the specific region of mobile communication system.Yet the present invention is not limited to this configuration, but can use other scheme.For example, the enable mode coverage 16 of each equipment of the core network 11 can be the whole network (PLMN: Public Land Mobile Nerwork) of mobile communication system.According to this example, prevented to take place the switching equipment of the core network 11 relevant with the terminal of communicating by letter 13.
In order to be applied to 3GPP-LTE/SAE, preferably revise 3GPP TR23.882 (third generation partner program: technical specification group services and system aspects according to the mobile communication system of above-mentioned exemplary embodiment; 3GPP System Architecture Evolution: about the report (version 7) of the choice of technology and conclusion).This revision will be described below.
" argumentation "
1. organize UPE and their range of management as how scalable mode?
A kind of mode that this strong request that makes UPE must be able to serve all eNB among the PLMN is alleviated is to introduce so-called coverage, and these coverages narrow down to one group of UPE that the eNB that is responsible for covering LTE zone/field provides service with the scope of S1-flex interface.Because this group UPE in this zone of service has formed the UPE pond that can therefrom select eNB, therefore, this coverage is also referred to as pool area.
As the description among Fig. 4, one just when UE moves through the coverage, and the eNB beyond UE switches to range of management at current service UPE when requiring a UPE to the destination service zone to relocate, can produce the problem that UPE relocates.
Although the notion of coverage is very good for the range of management of restriction UPE, and provide a kind of means of optimizing route (because can select more near user's physical location UPE), be to use the fixed area border can cause serious problem.For example, for the user who frequently passes through the border, coverage (for example), when these users pass through the border, coverage, all will experience UPE and relocate because their living space.
For the UE of LTE_IDLE pattern, its shortcoming mainly is when UE passes through between the coverage, will introduce extra signaling load, if be not fixed up by strictness in the border, coverage, this situation also can be avoided.Yet, for the UE of LTE_ACTIVE pattern, worsening owing to may experience service in the activation communication period, this shortcoming may be more serious.For this reason, should take all modes to avoid the frequent UPE of the UE in the LTE_ACTIVE pattern to relocate.
For fear of the fixing/service of strictness or this defective on pool area border, this works (contribution) has been proposed a kind of scheme, each UPE can have configurable flexibly coverage whereby, and this coverage defines by one group of LTE sub-district or tracing area.The coverage of UPE has defined the LTE zone that this UPE can serve (for example, sub-district or TA).
But Fig. 5 has illustrated the notion of coverage of the flexible configuration of each UPE.Fig. 5 emphasizes out to want in operators to limit/dispose and has flexibility completely aspect the mode of coverage of UPE.The coverage can be big equally with whole PLMN, but the geographic area (for example, along rail link or motorway) that also can be limited to the zone (for example, city, zone, capital, state) in a certain area or otherwise limit.
Important part is, the common high superposed in UPE coverage, so that each TA/ sub-district is all covered by several coverages in most cases, and this can select the expection UPE of (for example, the most longways) service particular UE best with regard to the permission system.
These UPE that can serve specific LTE sub-district/TA can be considered to can be used in the UPE " pond " of control UE by during indwelling (camp) is in this LTE sub-district/TA.This has carried out more detailed narration in Fig. 6.For example, when UE A is being retained among LTE sub-district/TA, can be served by UPE1, UPE2 or UPE3, this is because it is in the coverage of all three UPE.Yet because the UPE service area concept allows single UPE to become a part in a plurality of " pool areas ", the border of therefore, passing " pool area " does not need UPE to relocate usually.This is because UPE in this service (if select suitable) also can serve new " pool area " probably.
2. how to reduce the quantity (although having limited the range of management of UPE) that UPE relocates?
Can further be decomposed into following point about more hour how to reduce the problem that UPE relocates number of times in the range of management of each UPE:
. when connecting, how to select suitable UPE?
. when carry out UPE and relocate (under idle pulley and enable mode)?
. under situation about relocating, how to reselect new UPE?
＜when connecting, how to select suitable UPE?
The moving range most of the time of considering UE is the relatively little geographic area that is limited in user's live and work, and the good selection of obviously initial UPE has significant effects.UPE in initial selected can provide under the situation of service for the LTE zone that covers user's normal life space, just seldom needs to relocate UPE.
Works S2-062662 has proposed the position of a kind of UE of consideration and/or has moved historical scheme.
＜when relocate UPE (under idle pulley and enable mode)?
Owing to should take all modes to avoid the UPE of the UE under the LTE_ACTIVE pattern to relocate (to avoid unnecessary service disruption), therefore, have only when UE moves to outside the range of management of UPE in its service, just should relocate.For example, UE moves through the PLMN border.
Yet, be not very clear and definite for the UE under the LTE_IDLE pattern carries out that UPE relocates about when.Even in this case, only the remaining once in a while of expectation (that is, when having enough gains) just carried out UPE and relocated, to avoid signaling load unnecessary in the network.For example, upgrade later UPE at each TA and relocate and normally do not expect, and it may cause undesirable oscillation effect.
On the other hand, avoid the UPE under the LTE_IDLE pattern relocate neither be desirable till arriving regulatory boundary mode, this is because be in LTE_ACTIVE pattern following time as UE, and UPE before relocates (when UE still is in LTE_IDLE pattern following time) and can help avoid and carry out relocating afterwards.And, begun to move under the situation of one section remarkable distance at UE UPE from service, since after another UPE may provide service (for example) for this UE with effective and efficient manner more because routing optimality, so can expect that also carrying out idle pulley UPE relocates.
Therefore, expectation is also to provide the UE of a kind of permission under should being thought of as the LTE_IDLE pattern to carry out allowing to carry out when UPE relocates the mechanism of flexible configuration.As the solution of this problem, this works proposes to introduce the notion for the border, idle pulley coverage of following UPE, and described UPE has defined the UE that when should be under the LTE_IDLE pattern and considered that UPE relocates.That is, when idle UE will move to beyond the idle pulley coverage of UPE in the service, will reselect UPE for this UE service.
Fig. 7 has more specifically described the notion on enable mode and border, idle pulley coverage.
State (idle or activation) according to UE when UE moves, will trigger UPE at difference and relocate.For idle UE, when UE leaves the idle pulley coverage of UPE in the service, the process of relocating will start.For activating UE, passing this border will not exert an influence.When having only beyond moving to border, enable mode coverage, UPE just takes place relocate.
It should be noted that working as UE passes border, idle pulley coverage under the LTE_ACTIVE pattern, when changing to LTE_IDLE afterwards, the variation of UE state will trigger UPE and relocate (because UE is no longer in inside, idle pulley coverage).
The operator has obtained should be based on each UPE, for activating and the UE of idle pulley carries out the advantage controlled flexibly when UPE relocates.
＜how under situation about relocating, to reselect new UPE?
Last problem is to have triggered when relocating process as the UE that moves, and how to reselect or select UPE in the new service.
The suggestion of this works be allowed for example to consider may the UPE load supplier (vendor) special-purpose algorithm, moving projection and/or other knowledge of UE, described other knowledge are such as the UE historical information that is UPE in the next one service that chooses of the help that need not to change once more at once.
This algorithm will use the free time of UPE and the mapping of enable mode coverage, and based on the moving projection of UE (according to direction, speed with such as the out of Memory of knowledge such as the location history information of UE or incident, route, track), this algorithm can select its free time and/or enable mode coverage may maximum duration to cover the UPE (considering the state of this UE: activate or idle pulley) of this UE.Have under the height load situation of (surpassing a certain threshold value) at selected UPE, this algorithm will be selected next UPE, and this next one UPE expection can be with the second the longest time service UE.
" conclusion "
This works has been discussed the problem that UPE relocates.It has been illustrated in S1-flex that does not have range of management (because UPE should work as each eNB that can serve in PLMN) and the fixing problem under the circumscribed situation of UPE service or pool area (they be often pass across the border mobile UE carry out suboptimal scheme).
In order to address these problems/limitation, this works has been proposed a kind of scheme, can define the flexible services zone according to each UPE for idle pulley and enable mode UE whereby.According to the UE pattern, will relocate at different Time Triggered UPE according to the state (based on the free time or the enable mode coverage of operator's configuration) of UE.When UPE leaves from service, relocate by allowing to carry out UPE in different places, can help to exempt the needs (enable mode after for example, idle pulley before relocates and can exempt relocates) that enable mode UPE is relocated.
At last, the UPE that this works has proposed supplier's special use reselects algorithm, when this algorithm has been considered in selecting new service UPE, and idle and enable mode coverage relevant knowledge and moving projection and/or all be considered about the out of Memory of UE.
" proposal "
In 3.1 parts of TR23.882 and 7.7.2 part, propose to obtain following definition and notion:
The beginning * * * * * of * * * * first change
User plane entity (UPE): when down link data arrives UE, stop downlink data path for idle condition UE, and triggering/beginning paging.Its management and storage UE context, for example, the parameter or the network internal routing iinformation of IP carrying service.Under the situation of intercepting (interception), it carries out duplicating of customer service.
Need further to detect in UPE or other functional module, whether to have the pay imformation that is used for chargeing between the operator.
UPE idle pulley coverage: be defined as follows the coverage, the UE that UPE should be under the LTE_IDLE pattern in this coverage provides service.This coverage is based on that one group of sub-district or tracing area define.When UE had left in the current service idle pulley coverage of UPE under the LTE_IDLE pattern, UPE relocated and is triggered.
UPE enable mode coverage: be defined as follows the coverage, the UE that UPE should be under the LTE_ACTIVE pattern in this coverage provides service.This coverage is based on that one group of sub-district or tracing area define.When UE leaves the enable mode coverage of UPE in the current service, just trigger UPE and relocate.
Idle pulley: be to be used for the LTE_IDLE of SAE/LTE or to be used for 2G/3G or the PMM_IDLE of URA_PCH, need further detect to this.
* * * * first change end * * * * *
The * * * * second change beginning * * * * *
7.7.2 between LTE for idle condition-solution of the key issue that access-system moves
7.7.2.1 it is general
The SAE/LTE connecting system has MME (mobile management entity needs further to detect this mobile management entity and resides among RAN or the CN).And the SAE/LTE connecting system has UPE (user plane entity).UE registers to MME and UPE.
MME storage UE context data is such as permanent and casual user's sign, mobile status, tracing area etc.MME can store the UE context for a long time, with separation and the interpolation again of considering temporary mark (user ID secret).This SAE/LTE system be by working load share/the profile MME of redundancy scheme (for example, being similar to lu-flex) constitutes, this mechanism makes it possible to realize UE moving in the specific geographical area, and does not need to change MME.The SAE/LTE system is supported in moving between MME.
UPE storage UE context data such as the parameter of acquiescence IP Connection Service, and is preserved the network internal routing iinformation.
The SAE/LTE connecting system connects network and the foundation (opening all the time) of acquiescence IP concatenation ability is made up, and, provides necessary all parameters of IP Connection Service with acquiescence QoS for UE when connecting that is.Under idle condition, be released in all data transmission resources between UE and the network, and the information that only storage acquiescence IP connects in network.
Note 1: the record of problem points
Need illustrate the relocating of IP address of between MME/UPE, moving.
The confidentiality of user ID requires UE to use temporary mark to be registered to network.This temporary mark resolved by previous serving MME (resolve) is a permanent identification.
When UE leaves the idle pulley coverage (it defines the LTE zone that UPE will serve idle pulley UE) of UPE in the service, relocate with regard to the UPE that triggers under the LTE_IDLE pattern.In case leave this zone, just from the UPE tabulation that service is provided for Target cell, select UPE in the new service.This selection operation for UPE in the new service also should be considered possible UPE load, and based on for example user's direction and speed, road or trace information, expect mobile about the user of the information of the knowledge of incident and user's behavior in the past.
After the UPE, UPE relocates and is triggered in having selected new service.Be updated in the route between UPE and the user plane anchor point, unless UPE and user plane anchor point are located together.This be can paging UE when down link data arrives precondition.And, upgrade local register (for example, HSS) by the registration of UE on other MME/UPE.These functions in Fig. 7 .7-1, have been shown.
Attention 2: needing further to detect is to adopt context transmission (relocating) also to be based on the scheme that connects again to carry out moving between MME.
Note 3: need further to detect between LTE-location of the user plane anchor point that access-system moves.
Fig. 7 .7-1 shown between LTE in LTE_IDLE-access-system moves.
7.7.2.2 moving in the LTE_IDLE state
Following information flow has been described mobile (when in identical following time of MME) under LTE IDLE state with tracing area registration.
Fig. 7 .7-2 has shown regional registration.
1) when before the no longer valid or regular tracking area update timer of tracing area when out of date, UE sends the tracing area registration.This tracing area registration message has comprised old temporary mark and the old tracing area sign of UE.
2) MME responds to confirming registration.Confirm that registration has comprised new tracing area sign, also can comprise the new temporary mark of UE.
After MME confirmed the TA registration, whether the new TA of its check was still in service in the idle pulley coverage of UPE.If do not exist, just select UPE in the new service.
3) in having selected new service during UPE, MME triggers UPE and relocates process.Need further to detect the further details that UPE relocates, this is because this depends on the result of determination whether MME/UPE is together located.
* * * * second changes and finishes * * * * *
Although used specific term description the preferred embodiments of the present invention, these descriptions only have been illustration, are to be understood that under the situation that does not break away from back claims, can change or change the preferred embodiments of the present invention.
Claims (16)
1. mobile communication system comprises:
A plurality of base station equipments, each base station equipment is used to form the sub-district that is connected with terminal via Radio Link;
Equipment of the core network, it is used for for each sub-district of described base station equipment, management wherein can connect the idle pulley coverage of the terminal under the idle pulley and the enable mode coverage that wherein can be connected the terminal under the enable mode respectively, under described idle pulley, terminal does not communicate, and under described enable mode, the terminal ongoing communication, described enable mode coverage is wider than described idle pulley coverage, as long as the terminal under the idle pulley is arranged in described idle pulley coverage, this equipment of the core network just keeps the terminal under the described idle pulley that it self is connected to via the base station equipment in described idle pulley coverage with this core network device is connected, and as long as the terminal under the enable mode is arranged in described enable mode coverage, this equipment of the core network just keeps the terminal under the described enable mode that it self is connected to via the base station equipment in described enable mode coverage with this equipment of the core network is connected; With
Terminal, be used for when its when described idle pulley is moved to outside the border of idle pulley coverage, with its equipment of the core network of connection from the idle pulley coverage as the source is managed, switch to the equipment of the core network that the idle pulley coverage as the destination is managed, and, when its when described enable mode is moved to outside the border of enable mode coverage, the equipment of the core network of connection from the enable mode coverage as the source is managed with it switches to the equipment of the core network that the enable mode coverage as the destination is managed.
2. according to the mobile communication system of claim 1, wherein when terminal became idle pulley after enable mode is moved to outside the border of idle pulley coverage, this terminal switched to its connection to this terminal equipment of the core network that this moment, residing idle pulley coverage managed.
3. according to the mobile communication system of claim 1, if wherein there are a plurality of equipments of the core network that are connected to described terminal, be used as the candidate that the connection of described terminal can be switched to, then move, one of described equipment of the core network is defined as the equipment of the core network that the connection of this terminal will switch to based on the prediction of described terminal.
4. according to the mobile communication system of claim 1, if wherein there are a plurality of equipments of the core network that are connected to described terminal, be used as the candidate that the connection of described terminal can be switched to, then based on load condition, one of described equipment of the core network is defined as the equipment of the core network that the connection of this terminal will switch to as the equipment of the core network of candidate.
5. according to the mobile communication system of claim 1, wherein said enable mode coverage comprises the overall network of described mobile communication system.
6. mobile communication system that is used for the trunk subscriber data comprises:
A plurality of base station equipments, each base station equipment is used to form the sub-district that is connected with terminal via Radio Link; With
Equipment of the core network is used to be connected to described base station equipment;
Even wherein the terminal under being in enable mode is between base station equipment when mobile, the equipment of the core network that is connected with this terminal keep with it self with being connected of described terminal, wherein under described enable mode, the terminal ongoing communication.
7. equipment of the core network, it is configured to be connected to a plurality of base station equipments and is connected to terminal via described base station equipment, and each described base station equipment is used to form the sub-district that is connected with terminal via Radio Link, and described equipment of the core network comprises:
The service region information memory, it is used for each sub-district with respect to described base station equipment, management wherein can connect the idle pulley coverage of the terminal under the idle pulley and the enable mode coverage that wherein can be connected the terminal under the enable mode respectively, under described idle pulley, terminal does not communicate, and under described enable mode, the terminal ongoing communication, described enable mode coverage is wider than described idle pulley coverage; With
Connect controller, be used for as long as the terminal under the idle pulley is positioned at described idle pulley coverage, just keep the terminal under the idle pulley that equipment of the core network is connected to via the base station equipment in described idle pulley coverage with this core network device is connected, and as long as enable mode terminal down is arranged in described enable mode coverage, just maintenance is with the terminal under the enable mode that this equipment of the core network is connected to via the base station equipment in described enable mode coverage with this equipment of the core network is connected.
8. according to the equipment of the core network of claim 7, wherein when terminal became idle pulley after enable mode is moved to outside the border of idle pulley coverage, the equipment of the core network that the destination that described connection controller will be connected to this terminal just is being attached thereto from described terminal switched to this terminal equipment of the core network that this moment, residing idle pulley coverage managed.
9. according to the equipment of the core network of claim 7, wherein said enable mode coverage comprises the overall network of described mobile communication system.
10. according to the equipment of the core network of claim 7, wherein mobile management entity and user plane entity are installed in the node separately.
11. mobile communication terminal that in mobile communication system, uses, it is used for each sub-district with respect to described base station equipment, use equipment of the core network to manage idle pulley coverage that wherein can connect the terminal under the idle pulley and the enable mode coverage that wherein can be connected the terminal under the enable mode respectively, under described idle pulley, terminal does not communicate, and under described enable mode, the terminal ongoing communication, described enable mode coverage is wider than described idle pulley coverage, and described mobile communication terminal comprises:
State supervisor is used for management of mobile telecommunication terminal and is in idle pulley or enable mode; With
Connect controller, be used for when mobile communication terminal when the idle pulley of being managed by described state supervisor is moved to outside the border of idle pulley coverage, with the equipment of the core network of this connection from this idle pulley coverage is managed as the source, switch to the equipment of the core network that this idle pulley coverage is managed as the destination, and, when mobile communication terminal when the enable mode that described state supervisor is managed is moved to outside the border of enable mode coverage, the equipment of the core network of connection from the enable mode coverage is managed as the source with it switches to the equipment of the core network that the enable mode coverage is managed as the destination.
12. mobile communication terminal according to claim 11, wherein when mobile communication terminal when described enable mode is moved to outside the border of idle pulley coverage, described connection controller just will connect the equipment of the core network that is connected at this moment from mobile communication terminal, switch to the mobile communication terminal equipment of the core network that this moment, residing idle pulley coverage managed.
13. an equipment of the core network, it is adapted to be connected to a plurality of base station equipments, and each base station equipment is used to form the sub-district that is connected with terminal via Radio Link, and this equipment of the core network is connected to terminal via described base station equipment, and described equipment of the core network comprises:
The service region information storage device, be used for each sub-district with respect to described base station, management wherein can connect the idle pulley coverage of the terminal under the idle pulley and the enable mode coverage that wherein can be connected the terminal under the enable mode respectively, under described idle pulley, terminal does not communicate, and under described enable mode, the terminal ongoing communication, described enable mode coverage is wider than described idle pulley coverage; With
Connect control device, be used for as long as the terminal under the idle pulley is positioned at described idle pulley coverage, just keep the terminal under the idle pulley that equipment of the core network is connected to via the base station equipment in described idle pulley coverage with this core network device is connected, and as long as enable mode terminal down is arranged in described enable mode coverage, just maintenance is with the terminal under the enable mode that this equipment of the core network is connected to via the base station equipment in described enable mode coverage with this equipment of the core network is connected.
14. mobile communication terminal that in mobile communication system, uses, it is used for each sub-district with respect to described base station, use equipment of the core network to manage idle pulley coverage that wherein can connect the terminal under the idle pulley and the enable mode coverage that wherein can be connected the terminal under the enable mode respectively, under described idle pulley, terminal does not communicate, and under described enable mode, the terminal ongoing communication, described enable mode coverage is wider than described idle pulley coverage, and described mobile communication terminal comprises:
The condition managing device is used for management of mobile telecommunication terminal and is in idle pulley or enable mode; With
Connect control device, be used for when mobile communication terminal when the idle pulley of being managed by described condition managing device is moved to outside the border of idle pulley coverage, with the equipment of the core network of this connection from this idle pulley coverage is managed as the source, switch to the equipment of the core network that this idle pulley coverage is managed as the destination, and, when mobile communication terminal when the enable mode that described condition managing device is managed is moved to outside the border of enable mode coverage, the equipment of the core network of connection from the enable mode coverage is managed as the source with it switches to the equipment of the core network that the enable mode coverage is managed as the destination.
15. user plane entity changing method that is used for the user plane entity that will connect at the mobile communication system switching terminal, this mobile communication system comprises a plurality of base stations, each base station is used to form the sub-district that is connected with terminal via Radio Link, wherein this terminal connects this user plane entity via the base station, and described user plane entity changing method comprises:
Each sub-district with respect to described base station, management wherein can connect the idle pulley coverage of the terminal under the idle pulley and the enable mode coverage that wherein can be connected the terminal under the enable mode respectively, under described idle pulley, terminal does not communicate, and under described enable mode, the terminal ongoing communication, described enable mode coverage is wider than described idle pulley coverage;
As long as the terminal under the idle pulley is arranged in the described idle pulley coverage of Any user plane entity, just keep described terminal and described user plane entity are connected to each other;
When the terminal under being in idle pulley moves to outside the border of idle pulley coverage, just, switch to the user plane entity that manages for idle pulley coverage as the destination with the user plane entity of connection from the idle pulley coverage as the source is managed of described terminal;
As long as when being in terminal under the enable mode and being arranged in the described enable mode coverage of Any user plane entity, just keep described terminal and described user plane entity are connected to each other;
When the terminal under being in enable mode moves to outside the border of enable mode coverage, just, switch to the user plane entity that the enable mode coverage as the destination is managed with the user plane entity of connection from the enable mode coverage as the source is managed of described terminal.
16. the connection control method of a mobile communication system, be used to use a plurality of base station equipments and user plane entity to come the trunk subscriber data, each base station equipment is used to form the sub-district that is connected with terminal via Radio Link, this user plane entity can be connected to described base station equipment, and described connection control method comprises:
Even the terminal under being in enable mode when mobile, still keeps being connected to described terminal with the user plane entity that described terminal links to each other between described base station equipment, wherein under described enable mode, the terminal ongoing communication.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006222514 | 2006-08-17 | ||
| JP2006222514 | 2006-08-17 | ||
| JP2007030562 | 2007-02-09 |
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| CN101127934A true CN101127934A (en) | 2008-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101416033A Pending CN101127934A (en) | 2006-08-17 | 2007-08-17 | Mobile communication system, core network apparatus, and mobile communication terminal |
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| JP (1) | JP5440597B2 (en) |
| CN (1) | CN101127934A (en) |
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|---|---|---|---|---|
| JP3987699B2 (en) * | 2001-09-10 | 2007-10-10 | 株式会社エヌ・ティ・ティ・ドコモ | Cell shape control method, mobile communication system, and base station and mobile device used in the system |
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2007
- 2007-08-17 CN CNA2007101416033A patent/CN101127934A/en active Pending
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| JP5440597B2 (en) | 2014-03-12 |
| JP2012085342A (en) | 2012-04-26 |
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