CN101170816A - Method and system for dynamic registration area update and synchronization - Google Patents
Method and system for dynamic registration area update and synchronization Download PDFInfo
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- CN101170816A CN101170816A CNA2006101507146A CN200610150714A CN101170816A CN 101170816 A CN101170816 A CN 101170816A CN A2006101507146 A CNA2006101507146 A CN A2006101507146A CN 200610150714 A CN200610150714 A CN 200610150714A CN 101170816 A CN101170816 A CN 101170816A
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Abstract
The invention discloses a method for dynamically and simultaneously updating a registration zone. When preset conditions are met, acquiring information in the area wherein a UE locates and changing related membership in a current TA list according to the information; substituting the original TA. list at the opposite side with the changed TA.list, wherein, members can be as TA/RA/LA; when a paging response case occurs to the UE, the members in the TA list will be paged at the website side. The invention also discloses a system for dynamically and simultaneously updating the registration zone, which includes a TA list updating module and a TA list simultaneous module connected therewith. The method and the system realize timely updating of the TA list and guarantee the relatively smaller paging range, lower paging object alteration frequency caused by TAU/RAU/LAU, avoid the frequent network registration, save the system signaling and improve the system performance.
Description
Technical field
The present invention relates to the synchronous method and system of a kind of dynamic registration area update, particularly a kind of in evolvement network, by tracking area tabulation (Tracking Area list, abbreviation TA list) dynamic registration area update is carried out in the dynamic change of element, and keep network side and subscriber equipment (User Equipment is called for short UE) to hold the method and system of Acceditation Area information synchronization.
Background technology
In the existing 2G/3G network, Serving GPRS Support Node (Serving GPRS SupportingNode, be called for short SGSN) pass through at lane place (Location Area at circuit domain business, be called for short LA), at route district (the Routing Area of packet switch domain service, be called for short RA) or user registration area (User Registration Area, URA) positional information of preserving UE on the rank is carried out mobile management.Wherein, for the 2G network, URA is a LA, and for 3G network, URA is a RA.Accordingly, when UE is in the free time during (Idle) state, LA/RA/URA is the minimum unit that network is known the UE positional information, and when network side has the downlink business of calling out UE to arrive, network side will carry out paging in all sub-districts.Therefore, when a certain UE moves to another zone from a zone, if variation has taken place for its LA, RA or URA, just need the corresponding position of initiating to upgrade (LA Update is called for short LAU), routing update (RA Update, be called for short RAU), be that Acceditation Area upgrades (URA Update is called for short URAU), the LA/RA that network side preservation is new, to guarantee that network side can search out this UE when downlink business arrives.Therefore, LA/RA of the every replacing of UE, the process of the LA/RA that is preserved all can take place once to change in network side.
Along with of the development of current 3GPP network to low time delay, two-forty and packetizing direction, Long Term Evolution (Long Term Evolution, be called for short LTE)/System Architecture Evolution (System ArchitectureEvolution, be called for short SAE) network, be also referred to as evolvement network, become the developing direction of mobile communications network.In the LTE/SAE network, the function of user's face and chain of command is separated, and with the mobile management function of chain of command abstract be a logical functional entity, be called mobile management entity (Mobility ManagementEntity, be called for short MME), with the function of user's face abstract be a logical functional entity, be called user plane entity (User Plane Entity is called for short UPE).MME is arranged in core net, carries out the mobile management function of UE, follows the tracks of user position information by tracking area (Tracking Area is called for short TA), is equivalent to LA, RA in the existing 2G/3G network.Therefore, when UE moves, tracing section updating (Tracking Area Update is called for short TAU) can not take place in same TA district; And when UE when a TA moves to another TA, then need to initiate TAU.From the angle of saving signaling, network wishes that the number of times of UE generation TAU is too frequent on the one hand, and therefore, based on the kinetic characteristic of UE, the division in TA district is the bigger the better; On the other hand, when the downlink business calling was in the UE of IDLE state, because network will carry out paging to all sub-districts in the TA of UE registration, therefore, the division in TA district was the smaller the better.To sum up, when the network planning, the division of TA will be taken all factors into consideration above factor, determines to have the fixedly TA district of suitable size.But the problem of bringing thus is, when UE moves around on the border of different TA, will cause frequent TAU, causes the continuous conversion of network TA to be called out, promptly so-called " Ping-Pang " effect.
In addition, mobile between different wireless access technology (Radio Access Technologies is called for short RAT) network as UE, such as moving between 2G/3G network and evolvement network, UE also can cause network registration process because of the variation of access network.
As seen, when a bimodulus or multimode UE in use, may exist the frequent network that LAU/RAU and TAU caused frequently to change the problem of paging object problem and network registry.Referring to Fig. 1, be an example of this possibility situation, wherein RA1 and RA2 are the route district of existing 2G/3G, TA1, TA2, TA3 and TA4 are the tracking area of evolvement network.When bimodulus or multimode UE enter RA1 or RA2, need be to the SGSN of 2G/3G registration, and network side is all wanted corresponding change during RA of every replacing; When it enters TA1, TA2, TA3 or TA4, then need registration, and during TA of every replacing, network side is also wanted corresponding change to the MME/UPE of evolvement network.
Therefore, how to accomplish signaling reduction, when promptly how to reduce LA/RA and TA change, the frequency of network side change paging object, and reduce the internetwork system registry frequency of different RAT, to improving evolvement network performance, conserve system resources and promoting the transition of evolvement network and 2G/3G network to merge, have great importance.
At this problem, mainly contain two kinds of solutions at present:
First kind of technical scheme is the TA district method of overlapping, as shown in Figure 2.In network planning process, delimit fixing overlapping region, in Fig. 2, TA1 and TA2 are overlapped, and TA2 is overlapped with TA3 again, like this for the lower UE of movement velocity, when move on its border at TA1 and TA3, owing to be within the scope of TA2, therefore need not to initiate TAU, therefore solved " Ping-Pang " effect problem.But, for the UE that passes through the TA overlay region at a high speed back and forth, such as the UE that on inter-city train, uses, " Ping-Pang " effect problem still exists, concrete, when train passes through the border of TA1 and TA2, UE whole on the car will carry out TAU, and network side all will carry out the change of a paging object to whole UE; When train passes through the border of TA2 and TA3, network side all will carry out the change of a paging object to whole UE again, and return is as the same.When UE passed through a plurality of TA district back and forth, the change of then frequent paging object will take place.As seen, the partly overlapping technical scheme in TA district is not properly settled " Ping-Pang " effect problem that UE caused of passing through the overlay region back and forth, simultaneously, problem that the paging object that causes during also not to LAU/RAU changes repeatedly and UE move the frequent network registry problem that is produced solution are provided between different RAT networks, having system resource equally wastes in a large number, the defective that systematic function reduces.
Second kind of technical scheme is classification TA method, as shown in Figure 3.In network planning process,,, divide the TA rank as UE translational speed, standby time etc. according to the motion feature of UE; The UE of accessing mobile communication network is according to the suitable TA level of displacement feature selecting, such as, UE selects high TA level (among Fig. 3 with 3 grades " level3 " expression) fast, at a slow speed or static UE select low TA level (among Fig. 3 with 1 grade " level1 " expression).Further, the TA rank can adopt two kinds of methods to be provided with, and the one, different ranks is represented in the segmentation of TA level, as 3 grades " level3 " among Fig. 3,2 grades " level2 " and 1 grade " level1 "; The one, the TA level is set to 9 binary modes of xxx-xxx-xxx, represent a rank for per 3, such as " 001-001-010 " representative " 1-1-2 " rank is set, its advantage is when broadcasting this rank in the sub-district, just can know all rank that this sub-district is affiliated, comprise that highest level is 1 district, middle rank is 1 district, and minimum rank is 2 districts.But how this technical scheme divides the TA district during to the network planning is had higher requirement, such as, concerning pass through movable UE on border, higher level TA district, even its traverse velocity is lower, also must distribute the TA of a higher level, strengthened the paging area; As shown in Figure 3, when a UE when TA1-1-2 and TA1-2-1 border low speed pass through, for fear of " Ping-Pang " effect, must give its distribution T A1, paging domain will be whole TA1 district thus, cause the waste of signaling, also need constantly to judge the motion feature of UE simultaneously, determine the TA rank lift adjustment of UE, and this adjustment result is carried out synchronously at UE and core-network side, therefore implement very complicated.Simultaneously, the problem and the UE of conversion move the frequent network registry problem that is produced to the technical program network side paging object that also do not solve LAU/RAU and caused between different RAT networks repeatedly.
In sum, still do not have in the prior art and properly settle network side paging object that TAU/LAU/RAU the causes problem of conversion and UE moves the frequent network registry problem that is produced between different RAT networks technical scheme repeatedly, for this reason, the conception of TA tabulation (list) is suggested: UE is registered in the zone, and this zone promptly is called as the Acceditation Area of UE.The URA that is different from existing 2G/3G, this Acceditation Area can be a TA district, it also can be the combination in a plurality of TA district, represent with TA list, then UE is in Acceditation Area when mobile, the scope of ICQ UE is whole Acceditation Area, and therefore, the TAU that takes place in Acceditation Area can not cause the frequent changes of ICQ object.Like this, be that the different TA of UE Dynamic Selection forms TA list according to motion state and the position of UE, can reach eliminations " Ping-Pang " effect problem and reduce the effect of paging domain, saving signaling.For example the UE that passes through at TA1-1-2 and TA1-2-1 border low speed among Fig. 3 if select TA1-1-2 and TA1-2-1 to form TA list, has just avoided the too big problem of paging zone, is guaranteeing to avoid " Ping-Pang " effect problem under the less situation of paging domain.But the method for TA list only is a kind of conception at present, and to how realizing that TA list upgrades, how to adjust TA list according to the motion state of UE, and how to realize the synchronous of UE side and network side TA list, does not then have actual solution.Therefore, do not provide a cover practicable TA list solution in the prior art.
Summary of the invention
The purpose of this invention is to provide the synchronous method and system of a kind of dynamic registration area update, solve the frequent network side paging object that TAU/LAU/RAU the brought problem and the network registry problem of conversion repeatedly, thereby improve evolvement network performance, conserve system resources.
For achieving the above object, the invention provides the synchronous method of a kind of dynamic registration area update, may further comprise the steps:
In technique scheme, comprise also before the step 1 the pre-conditioned of triggering tracking area tabulation change is set that described pre-conditioned described UE generation network attachment incident, the periodic location update time that reaches described UE, the described UE of including but not limited to TAU incident, generation page response incident and/or described UE takes place initiate the service request incident.
Obtaining the current location information of UE in the described step 1 is, according to network convention, obtains the current location of UE information by core-network side or UE side:
When network convention was undertaken by core-network side, obtain the current location information of UE and be specially: UE sent a request message by the MME of access network entity to core-network side; Described access network entity is the additional current location information of described UE in request message;
When network convention was undertaken by the UE side, obtain the current location information of UE and be specially: UE obtained the location information of carrying in the system message of base station broadcast;
Wherein, the location is TA, RA, LA and/or the mobile cell cell at the current place of UE, comprises TA, the LA at the current place of UE and/or the sign of RA in the information of described location.
The sign that also can comprise the current adjacent region of UE in the information of location, described adjacent region are the TA adjacent with the UE location, and selectivity comprises LA and/or the RA adjacent with the UE location.
Be specially the member group of change in the tabulation of front side tracking area according to the location information-change when the related member in the tabulation of front side tracking area organizes in the described step 1, the member in described member's group is interrelated with member's vital values.
Take in order to reduce unnecessary system or terminal resource, better technical scheme is: described step 2 also comprises: opposite side only keeps the member of tracking area tabulation after changing.
Perhaps, be specially the member group of change in the tabulation of front side tracking area according to the location information-change when the related member in the tabulation of front side tracking area organizes in the described step 1, the member in described member's group is the center with the zone of location information correspondence, adjacent association.
Further, described step 2 is specially is carrying described tracking area tabulation after changing in the communication signaling of front side and opposite side, and described tracking area tabulation is after changing sent to opposite side from working as the front side.
Also comprise after the described step 2: when at described UE the page response incident taking place, network side carries out paging in member's scope of current TA list.Thereby, realize effective reduction, the saving signaling resource to the paging area.
The present invention also provides a kind of dynamic registration area update synchronous system, comprising:
TA list update module is used to obtain and satisfies the current location information of pre-conditioned UE, and according to the related member group of the described TA list of described location information-change update module in the TA list of front side;
TA list synchronization module is connected with described TA list update module, and the TA list that is used to use after changing replaces the original TA list of described TA list update module opposite side.
Described TA list update module can be positioned at core-network side or each UE end side.
Also can comprise information storage module, be used for providing UE location information to described TA list update module; Described information is the sign of UE place/adjacent TA and the sign of place/adjacent route district and lane place, perhaps, the described sign that is designated UE place/neighbor tracking district, and comprise the identification information of this tracking area and the identification information of place route district and lane place in the sign of arbitrary tracking area.
As shown from the above technical solution, the present invention adopts the member to change and realizes upgrading synchronously by TA list, has following beneficial effect:
1, TA list has realized upgrading timely adjusting according to call state and the change in location of each UE, has guaranteed less paging domain;
2, Acceditation Area has comprised UE overwhelming majority's in evolvement network zone of action, has reduced the frequency that TAU causes the conversion of network side paging object to take place;
3, Acceditation Area has further comprised UE overwhelming majority's under different RAT networks zone of action, has reduced the frequency that RAU/LAU causes the conversion of network side paging object to take place, and has also avoided frequent network registry;
4, need not generally mobile communication system is changed on a large scale, and saved system signaling, and improved systematic function.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is an example of existing LAU/RAU/TAU of present dual-mode/multi-mode UE and network registry problem;
Fig. 2 is an overlap example of method of TA district in the prior art;
Fig. 3 is an example of classification TA method in the prior art;
Fig. 4 is the basic flow sheet of the synchronous method of dynamic registration area update provided by the present invention;
Fig. 5 is the flow chart of the embodiment of renewal TA list provided by the present invention;
Fig. 6 is the flow chart of the embodiment of convergence TA list provided by the present invention;
Fig. 7 is the schematic diagram of another method of renewal TA list provided by the present invention;
Fig. 8 is the flow chart of the embodiment 1 of method provided by the present invention;
Fig. 9 is the flow chart of the embodiment 2 of method provided by the present invention;
Figure 10 is the flow chart of the embodiment 3 of method provided by the present invention;
Figure 11 is the flow chart of the embodiment 4 of method provided by the present invention;
Figure 12 is the embodiment 5 instant synchronous flow charts of method provided by the present invention;
Figure 13 is the embodiment synchronous flow chart of 5 different time of method provided by the present invention;
Figure 14 is the flow chart of the embodiment 6 of method provided by the present invention.
Embodiment
In order to overcome the network side paging object that TAU/RAU/LAU caused frequent in prior art transformation problem and overcome frequent network registry problem of the prior art repeatedly, the invention provides the practicable TA list solution of a cover, constitute the Acceditation Area of this UE by the TA list of each UE, network side carries out paging in Acceditation Area, be specifically described below.
The method that dynamic registration area update provided by the present invention is synchronous referring to Fig. 4, may further comprise the steps:
Wherein, the size of TA and position determine when the network planning, by satisfying the current location of inquiry UE when pre-conditioned, member among the TA list dynamically adjusted.Therefore, also comprise before the step 1 being provided with and trigger the pre-conditioned of TA list change, described pre-conditioned for following the incident of UE updating location information in UE and core net generation signaling or the service interaction process, include but not limited to that described UE network attachment incident, the periodic location update time that reaches described UE, described UE generation TAU incident takes place, page response incident and/or described UE initiation service request incident take place.Such as, when the TAU incident takes place, when only in TA list member, not comprising upgraded regional, just cause member's change, the change of network side paging object takes place all to cause in each TAU incident in the prior art, obviously changes frequency and is reduced greatly.
Frequent change and network registry problem for the paging object that further overcomes RAU/LAU and caused also comprise before the described step 1 TA, LA and RA are set, and be provided with described arbitrary TA and described TA overlapping RA and the sign of LA.Like this, the UE Acceditation Area that is combined into by the member among the TA list is the multi-access technology network element that comprises RA, LA and TA.As shown in Figure 1, when knowing that UE enters TA1 or TA2, RA1 also becomes the member of TA list as the UE region, and then UE just need not to carry out the registration of network when TA1 enters RA1 again; In like manner, when knowing that UE enters TA3, RA2 also becomes the member of TA list as the UE region; When knowing that UE enters TA4, RA1 and RA2 become the member of TA list simultaneously as the UE region, and then when RA1 entered RA2, the generation of RAU also can not cause the change of network side paging object again.
Though but above-mentioned setting can overcome the frequent change and the network registry problem of the paging object that TAU/RAU/LAU causes, LA, RA and TA sign can cause TA list length to increase all as TA list member, and resource overhead increases.Therefore, use for reference the thought that TA divides in the classification TA method, when network planning TA divides, a RA/LA is divided into one or several TA districts, simultaneously, the identification information that is designated current TA of arbitrary TA and the identification information of place RA and LA are set, and then the member among the TA list only comprises TA, but system can discern RA and LA under it according to the sign of TA.It still is example with Fig. 1, the identification information that in the sign of TA1, TA2 and TA4, has all comprised RA1, the identification information that in the sign of TA3 and TA4, has all comprised RA2, when TA4 as TA list, then UE moves the RAU that is brought therein and can not bring any variation to the paging object, has avoided the unhelpful resource expenditure of system.In the such scheme, can be overlapping between the TA, between the RA, between the LA, if but above-mentioned element is set to nonoverlapping relation when the network planning, the RA that promptly forms some LA can not be superimposed on another LA again, the TA that forms some RA can not be superimposed on another RA again, then the variation of RA, LA must be followed the variation of TA, carries out just can meeting the demands to the single treatment of TA, therefore can further improve systematic function.By above-mentioned steps, can whether select the member as TA list when the planning by operator or network manager with LA and RA, therefore, selectivity comprises LA and/or RA among the member of TAlist.
In step 1, according to network convention, obtain the current location information of UE by core-network side or UE lateral root:
When network convention was obtained by core-network side, obtain the current location information of UE and be specially: UE sent a request message by the MME of access network entity to core-network side; Described access network entity is the additional current location information of described UE in request message; Then the MME of described core-network side can determine the physical region at the current place of described UE according to described location information;
When network convention was obtained by the UE side, obtain the current location information of UE and be specially: UE obtained the location information of carrying in the system message of base station broadcast; Then UE can determine the physical region at current place according to described location information.Above-mentioned physical region comprises TA, RA and LA.
Described access network entity changes with the difference of actual Access Network, and for evolvement network, this access network entity is ENodeB (Evolved NodeB, the i.e. NodeB of evolution), also claims the base station; For 3G network, can be the base station, also can be radio network controller (Radio Network Controller is called for short RNC).
Wherein, the current location of UE can be TA, RA, LA, can also make the sub-district cell that comprises TA, RA, LA sign; Comprise TA, the RA at the current place of UE and/or the sign of LA in the information of described location, also can further comprise the sign of the current adjacent region of UE, described adjacent region is the TA adjacent with the UE location, and selectivity comprises LA and/or the RA adjacent with the UE location.
Known after the zone of UE, when organizing, the related member in the tabulation of front side tracking area is specially the member group of change in the tabulation of front side tracking area according to location sign change in the step 1, member in described member's group is interrelated with member's vital values, and wherein a kind of method comprises:
The regional TA of step 11, judgement current UE location information correspondence
kWhether is described member as front side TAlist, be then capable step 12, otherwise execution in step 13;
Step 15, described adjacent member's vital values is deducted a threshold value V
n, execution in step 17;
Wherein, V
m＞V
n＞0.
Like this, by definition member vital values, realize dynamically updating to Acceditation Area.
Above-mentioned change in the TA list of front side the member and the method for member's vital values can be divided into two kinds, a kind of before step 17, also comprise:
Step 1701, judge whether described member's vital values arranges minimum vital values LV less than system
MIN, be execution in step 1702 then, otherwise execution in step 17;
Step 1702, described member is deleted when the TA list of front side from described, and execution in step 17.
Thereby kept dynamically updating of TA list member, be called TA list update method, referring to Fig. 5.
Another kind of before step 17, also comprise:
Thereby the dynamic order that has kept TA list member is called TA list convergence method, referring to Fig. 6.
As can be seen, the difference of TA list update method and TA list convergence method is that TA list convergence method do not delete as the member TA list tabulation, just plays the accelerating ated test effect.Wherein, the zone of judging current UE location information correspondence in the step 11 can be specially, TA, RA and/or the sign of LA and TA, RA and/or the LA of judgement correspondence from the cell information extraction comprises perhaps directly judge corresponding TA, RA and/or LA according to the sign of TA, RA and/or LA.
Be specially the member group of change in the tabulation of front side tracking area according to the location information-change when the related member's group in the tabulation of front side tracking area in the step 1, the member in described member's group comprises with member's vital values another kind of method that is mutually related:
Step 11 ', judge the regional TA of current UE location information correspondence
kWhether be described member as front side TA list, be then go step 12 ', otherwise execution in step 13 ';
Step 12 ', the minimum vital values LV that described member has system agreement is set
MIN, and execution in step 14 ';
Step 13 ', with the regional TA of described UE
kJoin among the described front side TA list of working as the newcomer, and the minimum vital values LV that described member has system's agreement is set
MIN
Step 14 ', judge described member TA
kWhether adjacent with a certain member in the TA list of front side, be then, to this member's execution in step 15 ', otherwise, maybe can't judge whether adjacent situation for non-conterminous, execution in step 16 ';
Step 15 ', described adjacent member's vital values is added a threshold value V
n, execution in step 17 ';
Step 16 ', described non-conterminous adjacent member's the vital values that maybe can't judge whether is added a threshold value V
m, execution in step 17 ';
Step 17 ', judge when whether front side TA list travels through and finish, be then to finish, otherwise to member's execution in step 14 of traversal not '.
Wherein, V
m＞V
n＞0.
Like this, by definition member vital values, same realization dynamically updating to Acceditation Area.
Above-mentioned change in the TA list of front side the member and the method for member's vital values also can be divided into two kinds, a kind of step 17 ' before, also comprise:
Step 1701 ', judge whether described member's vital values arranges maximum vital values LV greater than system
MAX, be then execution in step 1702 ', otherwise execution in step 17 ';
Step 1702 ', described member is deleted when the TA list of front side from described, and execution in step 17 '.
It is TA list update method.
Another kind of step 17 ' before, also comprise:
Step 1711 ', judge whether described member's vital values arranges minimum vital values LV greater than system
MAXBe then execution in step 1712 ', otherwise execution in step 17 ';
Step 1712 ', described member's imparting system is arranged maximum vital values LV
MAX, and execution in step 17 '.
It is TA list convergence method.
Wherein, the zone of step 11 ' middle judgement current UE location information correspondence can be specially, TA, RA and/or the sign of LA and TA, RA and/or the LA of judgement correspondence from the cell information extraction comprises perhaps directly judge corresponding TA, RA and/or LA according to the sign of TA, RA and/or LA.
No matter be the TA list variation that adopts incremented/decremented, still adopt the TA list variation of convergence/renewal, for the length that guarantees TA list within the specific limits, and then the area that guarantees paging domain effectively and not causes the waste of signaling, can preset TA list maximum length, when member's number reaches maximum length and will add new member, then that vital values is minimum or maximum member deletion from tabulation
Take in order to reduce unnecessary system or terminal resource, described step 2 also comprises: opposite side only keeps the member of tracking area tabulation after changing.This tabulation that only keeps the member is called synchronized model TAlist, and the tabulation that keeps member and member's vital values simultaneously is called calculation type TA list, is the example (X of calculation type TA list and corresponding synchronous type TA list below
i=1,2 ... n):
Calculation type TA list synchronized model TA list
Member member's vital values member
TA
1 X
1 TA
1
TA
2 X
2 TA
2
... ... ...
TA
n X
n TA
n
When multi-access technology, the member of TA list can also be RA/LA, but when comprising the identification information of place RA/LA in the TA sign, then the member still only comprises TA.
Because calculating, the change of TA list can carry out in core-network side, also can carry out in the UE side, therefore, the operating position of calculation type TA list and synchronized model TA list is as follows: if carry out the calculating of TA list in core-network side, then core-network side is used calculation type TA list, and the UE side is used synchronized model TA list; If carry out the calculating of TA list in the UE side, then the UE side is used calculation type TA list, and core-network side is used synchronized model TA list.Still be that the UE side is calculated specifically, can set by operator according to actual needs by core-network side.
Be the member group of change in the tabulation of front side tracking area according to the location information-change when the another kind of method of the related member's group in the tabulation of front side tracking area in the described step 1, member in described member's group is the center with the corresponding zone of sign, location, adjacent association comprises:
Step 1a, judging that whether the zone of described UE location information correspondence is described member when the tabulation of front side tracking area, is then not change, and finishes; Otherwise execution in step 1b;
Step 1b, with the zone of described UE and with the regional space adjacent areas of described UE as member composition new when the tabulation of front side tracking area.
For example, set in advance the TA that at every turn changes to 3*3,, can comprise RA and LA equally for the ease of expression.As shown in Figure 7.When the last time after changing UE be in TA22, be equivalent to comprise TA11 → TA13 among the TA list that TA21 → TA23 and TA31 → TA33 totally 9 TA districts; When UE moves to TA23, TAU takes place, but still in the scope in above-mentioned 9 TA districts, do not upgrade; When UE moves to TA24, be the center then with TA24, reset TA list; TA list after the renewal comprises 9 TA districts, is respectively TA13 → TA15, TA23 → TA25 and TA33 → TA35.As can be seen, when technique scheme does not take place critical event such as TAU in system at every turn, the renewal of TA list can take place all, saved system resource.Simultaneously, a plurality of TA district is related, has optimized frequent registration, has upgraded the Ping-Pang effect problem that is caused.
Wherein, the zone of judging current UE location information correspondence among the step 1a can be specially, TA, RA and/or the sign of LA and TA, RA and/or the LA of judgement correspondence from the cell information extraction comprises perhaps directly judge corresponding TA, RA and/or LA according to the sign of TA, RA and/or LA.
Obviously, remove the method for the change TA list that introduces above, other the arbitrary methods known to those skilled in the art can adopt equally, and do not influence the enforcement of technical solution of the present invention.
Use described tracking area tabulation after changing in the step 2 and replace the original tracking area tabulation of opposite side, make the new TA list that draws after the calculating guarantee the consistency of UE side and core-network side, guaranteed that promptly TAlist's is synchronous.But thisly can after renewal/convergence flow process, immediately take place synchronously, also can after renewal/convergence, carry out again when producing trigger event.Such as, situation about calculating for network side, when network side upgrade/restrain flow process after, can when paging UE take place, the TA list after upgrading be handed down to UE with call signaling realize synchronous; For another example, situation about calculating for the UE side, when the UE side upgrade/restrain flow process after, can be when page response takes place or initiatively initiates service request in UE, along with demand signalling sends to MME together, realization is synchronous.Realize being specially synchronously described step 2 and be specially, described tracking area tabulation is after changing sent to opposite side from working as the front side in the communication signaling of front side and opposite side, carrying described tracking area tabulation after changing.When the front side is core-network side, accept to carry in the message described tracking area tabulation after changing at the tracing section updating that core-network side is initiated to the UE side.When the front side is the UE side, in the request message that UE side direction core-network side is initiated, carry described tracking area tabulation after changing.
Based on top description, there are difference in UE side or core-network side that TA list change takes place, and the pre-conditioned difference of TA list change, and the difference on opportunity that takes place synchronously, therefore, may have multiple synchronization scenario, describe for three examples below:
1, critical event drives the synchronization scenario that core-network side is calculated: calculation side is a core-network side, is then reported the TA zone position at current UE place to core net by UE or ENodeB; Pre-conditioned for the network attachment time take place, TAU takes place and/or service request is carried out TA list renewal/convergence when taking place etc.; Synchronously instant.Such as the network attachment incident, when inserting the core net incident and take place as UE, the current location sign of MME inquiry UE is determined the zone, adds to this member among the TA list and gives maximum vital values, give the UE side then synchronously, finish the initialization procedure of core-network side and UE side; When TAU took place, MME started TA list update algorithm flow process, obtains new TA list, issued the TA renewal that carries renewal TA list to UE and accepted message, upgraded the TA list of UE side, reached synchronous purpose; When service request took place, MME started TA list renewal/convergence algorithm flow process according to the business request information that receives.
2, critical event drives the synchronization scenario that the UE side is calculated: calculation side is the UE side, is then known the TA zone position at current place by system message by UE; Pre-conditioned for the network attachment time take place, when TAU takes place, the periodic location update that reaches UE during the time and/or UE carry out TA list renewal/convergence when carrying out page response etc.; And it is synchronously instant.Such as, the network attachment incident takes place, and the UE side is calculated new TA list, and carries new TA list in the request message of initiating to MME, finishes the initialization procedure of core-network side and UE side; When TAU took place, UE started TA list update algorithm flow process, obtains new TA list, carries new TA list then in the request message of initiating to MME, to replace the old TA list of core-network side, reaches synchronous purpose; When network side according to existing TA list paging to UE, UE carries out page response, starts TA list update algorithm flow process, obtain new TA list, in the response message of initiating, carry new TA list then,, reach synchronous purpose to replace the old TA list of core-network side to MME.
3, the UE side is calculated the synchronization scenario that critical event drives: calculation side is the UE side, is then known the TA zone position at current place by system message by UE; Pre-conditioned for the network attachment time take place, when TAU takes place, when UE carries out page response and/or the periodic location update that reaches UE carry out TA list renewal/convergence during the time etc.; Synchronous during the UE request.Such as, the network attachment incident takes place, and the UE side is calculated new TA list, and carries new TA list when the request message of initiating to MME, finishes the initialization procedure of core-network side and UE side; When TAU took place, UE started TA list update algorithm flow process, obtains new TA list, carried new TA list then when the request message of initiating to MME, to replace the old TA list of core-network side, reached synchronous purpose; The UE side is provided with a TA list and periodically calculates timer, start TA list update algorithm flow process during timer expiry, obtain new TA list, when the request message of initiating, carry new TA list then to MME, to replace the old TA list of core-network side, reach synchronous purpose.
After upgrading synchronously, when at described UE the page response incident taking place, network side carries out paging in member's scope of current tracking area tabulation.As seen, Ci Shi paging range has been limited in the suitable relatively zone.
Embodiment 1:
Referring to Fig. 8, UE is inner mobile at same MME, carries out TA list and upgrades and synchronous flow process.When UE enters new TA district (not among TA list), perhaps periodically TA district upgrades timer expiry, and perhaps UE carries out TAlist update algorithm and synchronous flow process by network side when a kind of inserting technology networks forwards another kind of inserting technology networks to:
Then after this, when at described UE the page response incident taking place, network side carries out paging in member's scope of current TA list.
Embodiment 2:
Referring to Fig. 9, UE is inner mobile at different MME, carries out TA list and upgrades and synchronous flow process.When UE enters new TA district (not among TA list), carry out TA list update algorithm and synchronously flow process by network side this moment:
Embodiment 3:
Referring to Figure 10, when the UE that is in free time (LTE Idle) state initiatively initiates business (current TA is among the TA list), UE initiates the service request process to core net, carry out TA list update algorithm and synchronous flow process by network side, make the vital values of the element among the TA list rapidly converge to minimum value, in order to next time more during new technological process, can soon the element of these vital values minimums be deleted away from TA list.
Embodiment 4:
Referring to Figure 11, when UE enter new TA district (or not among current TA list), perhaps periodically TA district upgrades timer expiry, and perhaps UE is when a kind of access technology forwards another kind of access technology connecting system to, by UE TA list update algorithm and synchronous flow process:
Embodiment 5:
Referring to Figure 12, when UE enter new TA district (or not among TA list), perhaps periodically TA district upgrades timer expiry, and perhaps UE carries out TA list update algorithm and synchronous flow process by UE when a kind of access technology forwards another kind of access technology connecting system to:
Step 504, UE send the TA renewal to MME and finish acknowledge message, carry new TA list in the message, upgrade with its and replace the original TA list of core-network side, reach UE side and the synchronous purpose of core-network side TA list.
Perhaps do not carry out described step 504, and execution in step 504 ': when the UE of LTE Idle state initiatively initiates business/page response, initiate the service request process to core-network side, it is synchronous that carry out TA list this moment, as shown in figure 13.
Embodiment 6:
Referring to Figure 14, when the UE of LTE Idle state initiatively initiated business and the page response incident takes place, UE carried out TA list convergence algorithm flow process and synchronous flow process:
The present invention also provides a kind of dynamic registration area update synchronous system, comprising:
TA list update module, be used to obtain and satisfy the current location information of pre-conditioned UE, and according to member and the member vital values of the described TA list of described location information-change update module in the TA list of front side, described member is a tracking area, and selectivity comprises lane place and/or route district;
TA list synchronization module is connected with described TA list update module, and the TA list that is used to use after changing replaces the original TA list of described TA list update module opposite side.
Described TA list update module is positioned at core-network side or each UE end side.Specifically be arranged on which side, can determine according to actual needs by operator.TA list synchronization module then can be divided into two parts, lays respectively at core-network side and end side, is respectively applied for reception, the replacement of sending synchronization message and finishing TA list; But from the angle of system, if the renewal of TA list is considered as systemic-function, then TA list synchronization module also can only be arranged at and work as the front side, is used to send the TA list after the renewal, is finished automatically by the opposite side system and upgrades and replace.
System provided by the invention further comprises special information storage module, and being used for provides UE location information to described TAlist update module; Described information is the sign of UE place TA and the sign of place RA and LA, and the sign of the adjacent TA of UE and the sign of adjacent R A and LA also can be provided.
But the situation that TA list length increases and resource overhead increases that all causes for fear of LA, RA and TA as TA list member, the sign of the described UE of being designated place TA be can adopt, and the identification information of this TA and the identification information of place RA and LA comprised in the sign of arbitrary TA.Be the sign of UE place TA then, the sign of the adjacent TA of UE also can be provided to the UE location information that TA list update module provides.
Represent the identification information of place RA and LA in order to be beneficial to the sign that adopts TA, arbitrary RA/LA is made up of at least one TA in the system.
Further, between the described TA, between the described LA, not overlapping between the described RA, then can realize effective covering to overall region.
This information storage module is arranged in the access network entity of each tracking area.Add by the access network entity information of in network side and UE side message transport process, carrying out.
It should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not limit it, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solution of the present invention.
Claims (19)
1. method that dynamic registration area update is synchronous is characterized in that may further comprise the steps:
Step 1, satisfy when pre-conditioned, obtain the current location information of a UE, according to related member's group of described location information-change in the tabulation of front side tracking area;
The original tracking area tabulation of opposite side is replaced in step 2, the described tracking area tabulation after changing of application.
2. method according to claim 1, it is characterized in that also comprising before the described step 1 being provided with and trigger the pre-conditioned of tracking area tabulation change, describedly pre-conditionedly include but not limited to that described UE network attachment incident, the periodic location update time that reaches described UE, described UE takes place the tracing section updating incident takes place, the page response incident takes place and/or described UE initiates the service request incident.
3. method according to claim 1, it is characterized in that obtaining in the described step 1 the current location information of UE is according to network convention, to obtain the current location of UE information by core-network side or UE side:
When network convention was undertaken by core-network side, obtain the current location information of UE and be specially: UE sent a request message by the mobile management entity of access network entity to core-network side; Described access network entity is the additional current location information of described UE in request message;
When network convention was undertaken by the UE side, obtain the current location information of UE and be specially: UE obtained the location information of carrying in the system message of base station broadcast;
Wherein, the location is tracking area, route district, lane place and/or the mobile cell at the current place of UE, comprises the sign of tracking area, route district and/or the lane place at the current place of UE in the information of described location.
4. method according to claim 3 is characterized in that also comprising in the information of location the sign of the current adjacent region of UE, and described adjacent region is the tracking area adjacent with the UE location, and selectivity comprises and position adjacent district, UE location and/or route district.
5. method according to claim 1 is characterized in that described step 2 also comprises: opposite side only keeps the member of tracking area tabulation after changing.
6. according to the arbitrary described method of claim 1-5, it is characterized in that being specially the member group of change in the tabulation of front side tracking area according to location sign change when the related member in the tabulation of front side tracking area organizes in the described step 1, member in described member's group is interrelated with member's vital values, comprising:
Step 11, judging that whether the zone of described UE location information correspondence is described member when the tabulation of front side tracking area, is that maximum vital values and the execution in step 13 that described member has system's agreement then is set, otherwise execution in step 12;
Step 12, the zone of described UE is joined described in the tabulation of front side tracking area as the newcomer, and the maximum vital values that described member has system's agreement is set;
Step 13, judge that whether described member exists adjacent situation with described member in the tabulation of front side tracking area, be then, successively to each adjacent member's execution in step 14, otherwise, non-conterminously maybe can't judge whether adjacent member's execution in step 15 to each successively;
Step 14, described adjacent member's vital values is deducted a threshold value V
n, finish;
Step 15, described non-conterminous adjacent member's the vital values that maybe can't judge whether is deducted a threshold value V
m, finish;
Wherein, V
m＞V
n＞0.
7. method according to claim 6, it is characterized in that also comprising after the described step 15: travel through the described vital values of working as whole members in the tracking area tabulation of front side, the member who vital values is arranged minimum vital values less than system deletes when the tabulation of front side tracking area from described.
8. method according to claim 6, it is characterized in that also comprising after the described step 15: travel through the described vital values of working as whole members in the tracking area tabulation of front side, vital values is arranged minimum vital values less than member's imparting system that system arranges minimum vital values.
9. according to the arbitrary described method of claim 1-5, it is characterized in that being specially the member group of change in the tabulation of front side tracking area according to the location information-change when the related member in the tabulation of front side tracking area organizes in the described step 1, member in described member's group is interrelated with member's vital values, comprising:
Step 11 ', judge that whether the zone of described UE location information correspondence is described member when the tabulation of front side tracking area, be then be provided with described member have the minimum vital values of system's agreement and execution in step 13 ', otherwise execution in step 12 ';
Step 12 ', the zone of described UE is joined described in the tabulation of front side tracking area as the newcomer, and the minimum vital values that described member has system's agreement is set;
Step 13 ', judge that whether described member exists adjacent situation with described member in the tabulation of front side tracking area, be then, successively to each adjacent member's execution in step 14 ', otherwise, successively to each non-conterminous maybe can't judge whether adjacent member's execution in step 15 ';
Step 14 ', described adjacent member's vital values is added a threshold value V
n, finish;
Step 15 ', described non-conterminous adjacent member's the vital values that maybe can't judge whether is added a threshold value V
m, finish;
Wherein, V
m＞V
n＞0.
10. method according to claim 9, it is characterized in that described step 15 ' also comprise afterwards: travel through described in the tabulation of front side tracking area whole vital values of members, the member who vital values is arranged maximum vital values greater than system is from described deletion when the tabulation of front side tracking area.
11. method according to claim 9, it is characterized in that described step 15 ' also comprise afterwards: travel through described in the tabulation of front side tracking area whole vital values of members, vital values is arranged maximum vital values greater than member's imparting system that system arranges maximum vital values.
12. according to the arbitrary described method of claim 1-5, it is characterized in that being specially the member group of change in the tabulation of front side tracking area according to the location information-change when the related member in the tabulation of front side tracking area organizes in the described step 1, member in described member's group is the center with the zone of location information correspondence, adjacent association comprises:
Step 1a, judging that whether the zone of described UE location information correspondence is described member when the tabulation of front side tracking area, is then not change, and finishes; Otherwise execution in step 1b;
Step 1b, with the zone of described UE and with the regional space adjacent areas of described UE as member composition new when the tabulation of front side tracking area.
13., it is characterized in that described step 2 is specially carrying described tracking area tabulation after changing in the communication signaling of front side and opposite side, sends to opposite side with described tracking area tabulation after changing from working as the front side according to the arbitrary described method of claim 1-5.
14. method according to claim 13 is characterized in that when the front side is core-network side, accepts to carry in the message described tracking area tabulation after changing at the tracing section updating that core-network side is initiated to the UE side.
15. method according to claim 13 is characterized in that when the front side is the UE side, carries described tracking area tabulation after changing in the request message that UE side direction core-network side is initiated.
16. the system that dynamic registration area update is synchronous is characterized in that comprising:
Tracking area list update module is used to obtain and satisfies the current location information of pre-conditioned UE, and according to the related member group of the described tracking area list update of described location information-change module in the tracking area tabulation of front side;
Tracking area tabulation synchronization module is connected with described tracking area list update module, and the original tracking area tabulation of described tracking area list update module opposite side is replaced in the tracking area tabulation that is used to use after changing.
17. system according to claim 16 is characterized in that described tracking area list update module is positioned at core-network side or UE side.
18. according to claim 16 or 17 described systems, it is characterized in that also comprising information storage module, be used for providing UE location information to described tracking area list update module; Described information is the sign in UE place/neighbor tracking district and the sign of place/adjacent route district and lane place, perhaps, described information is the sign in UE place/neighbor tracking district, and comprises the identification information of this tracking area and the identification information of place route district and lane place in the sign of arbitrary tracking area.
19. system according to claim 17 is characterized in that described information storage module is arranged in access network entity.
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