CN101052204B - Reconfiguration method and system for tracking zone, user device and mobility managing entity - Google Patents
Reconfiguration method and system for tracking zone, user device and mobility managing entity Download PDFInfo
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Abstract
The method comprises: a) user end (UE) measures its own current speed level; when UE determines to reconfigure TA level corresponding to the UE, it sends the speed level to mobility management entity (MME) in the evolving core network to request the MME to reconfigure the TA level; b) after receiving the speed level, the MME reconfigures TA level for the UE, and sends the reconfigured TA level to the UE; UE updates its TA level to the received TA level. The invention also provides system, UE an MME used for reconfiguring TA level.
Description
Technical field
The present invention relates to subscriber equipment (UE) the mobile management technology in the third generation (3G) communication system of evolution, relate in particular to and be used to reconfigure other system of tracking area (TA) level, subscriber equipment, Mobility Management Entity (MME) and TA rank method for reconfiguration in the evolution 3G network.
Background technology
Along with development of Communication Technique, the use of 3G network system is more widespread in recent years.Fig. 1 shows the system configuration sketch of 3G network.Referring to Fig. 1,3G network mainly is made up of Radio Access Network (RAN) and core network (CN).Wherein, RAN is responsible for handling and wireless relevant function; And CN is responsible for conduct voice calls and business such as data are connected, and realizes and such as the exchange and the route of public switched telephone network (PSTN) and the Internet external networks such as (Internet).
Be in evolution (Evolution) 3G network of conceptual phase at present, it is compared with traditional 3G network, and function is more powerful.In the evolution 3G network, the disposal ability of CN and RAN all increases, and they can be called as evolution core network (ECN) and evolution Radio Access Network (ERAN).
For the ease of network side UE is carried out mobile management, the evolution 3G network utilizes TA to follow the tracks of the position of UE under idle (LTE_IDLE) state.Though all include a plurality of sub-districts (Cell) among each TA, the minimum position unit of UE is TA under the idle condition that network side can know.UE when expiring through TA border or the periodical position renewing timer of himself, initiates TA and upgrades (TAU) flow process in moving process, and the TA sign at this current place of UE is reported ECN as latest position information.Relevant with this UE when professional when occurring, network side carries out paging to all sub-districts in the TA of UE place.
The evolution 3G network is a criterion with the area size when the initial network planning, and TA is divided into a plurality of ranks.The allocation plan of classification TA has been shown among Fig. 2.As can be seen from Fig. 2, the area of little other TA correspondence of level is less, and the area of the TA correspondence of large level is bigger.In other words, other size of TA level big or small corresponding with its area.And the TA of large level is made up of some little other TA of level, and is promptly mutually nested between the TA of different stage.In the network that has a plurality of rank TA configurations, when TA border that the every process of UE is identical with current TA rank of living in or periodicity TAU timer expire, report current location information to ECN.Theoretically, can come to distribute the TA of different stage according to UE for it in the translational speed under the idle condition.Like this, can reduce the network resources waste that causes because of frequent TAU and large tracts of land paging.But for present evolution 3G network, translational speed how to measure UE changes this problem and still is in state to be solved is arranged, and therefore changes based on the translational speed of UE and carries out other dynamic-configuration of TA level and also can't carry out.
Summary of the invention
In view of this, the invention provides a kind of other method of the TA of reconfiguring level.The method according to this invention may further comprise the steps:
A. user equipment (UE) is measured from current speed step, and when determining to reconfigure the TA rank of this UE correspondence, and this speed step is sent to Mobility Management Entity MME in the evolution core net, and request MME carries out the TA rank and reshuffles;
Described UE measures from comprising in current speed step: TAU number of tracing section updating and the cell ID Cell ID of record UE change number of times, when the measurement period that sets in advance expired, difference was counted in TAU time between the cycle of predetermined period number apart of definite current measurement period that is write down and front and cell ID change number of times is poor; Equal TAU number difference under 0 the situation, the cell ID that changes number of times difference and current measurement period according to determined cell ID changes number of times, determines the present speed rank of this UE; TAU number difference is under non-0 the situation, poor according to determined TAU number, determines the present speed rank of this UE;
B.MME is according to the speed step that receives, for this UE reconfigures the TA rank, and the TA rank that reconfigures sent to UE, and UE is the TA rank that receives with the TA grade renewal of self correspondence.
Preferably, set in advance the corresponding relation that cell ID changes number of times and speed step, described cell ID according to cell ID change number of times difference and current measurement period changes number of times and determines that the present speed rank of this UE comprises:
The absolute value that changes the number of times difference at cell ID changes number of times difference limen value less than the cell ID that sets in advance, and when the cell ID of current measurement period change number of times changes frequency threshold value less than the cell ID that sets in advance, cell ID change number of times with current measurement period is an index, in described cell ID change number of times and speed step corresponding relation, retrieve corresponding speed step, as the present speed rank of this UE.
Preferably, set in advance TAU time and count the corresponding relation of difference and speed step, described present speed rank according to TAU definite this UE of number difference comprises:
With described TAU several differences is index, retrieves corresponding speed step in the corresponding relation of described TUA number difference and speed step, as the present speed rank of this UE.
The method according to this invention further comprises:
During greater than TAU severals difference limen value of setting in advance, judge that the speed of UE improves in described TAU number difference, need reconfigure the TA rank, and it is described according to TAU definite other operation of present speed level of number to continue execution;
During less than the 2nd TAU severals difference limen value of setting in advance, judge that the speed of UE reduces in described TAU number difference, need reconfigure the TA rank, and it is described according to TAU definite other operation of present speed level of number to continue execution.
Preferably, steps A described speed step is sent to MME and asks MME to carry out TA rank reprovision be changed to:
Described speed step is carried in the TA rank reconfiguration request message,, sends to described MME by evolution Radio Access Network ERAN.
Preferably, set in advance speed step and other corresponding relation of TA level, the described MME of step B for this UE reconfigures the TA rank is:
MME is an index with the speed step that receives, and retrieves corresponding TA rank from the speed step that sets in advance and other corresponding relation of TA level, as the TA rank that reconfigures for this UE.
Preferably, step B is described sends to UE with the TA rank that reconfigures and is:
MME is carried on the TA rank with the TA rank that reconfigures and reshuffles and accept in the message, by ERAN, sends to UE.
Preferably, further comprise after the described step B:
The TA rank that reconfigures that UE will receive returns to MME, carries out the TA rank and reshuffles affirmation; After MME receives the affirmation that comes from UE, upgrade the TA rank of this UE correspondence of preserving among this MME.
Preferably, described UE returns to MME with the TA rank that reconfigures and carries out the TA rank and reshuffle and confirm as:
The TA rank that reconfigures that UE will receive is carried on the TA rank and reshuffles in the acknowledge message, returns to described MME by ERAN.
Preferably, steps A is described when speed step is sent to MME, and this method further comprises: UE sends to MME with current pairing TA rank;
After the described steps A, this method further comprises: the TA rank that MME is corresponding with this UE that self preserves with the TA rank that receives is compared, and when both are consistent, continues to carry out described step B.
The present invention also provides a kind of other system of TA level that is used to reconfigure, and this system comprises: the Mobility Management Entity MME of user equipment (UE) and evolution core net ECN, wherein,
Described UE is used to write down TAU number of tracing section updating and the cell ID Cell ID change number of times of UE, when the measurement period that sets in advance expired, difference was counted in TAU time between the cycle of predetermined period number apart of definite current measurement period that is write down and front and cell ID change number of times is poor; Equal TAU number difference under 0 the situation, the cell ID that changes number of times difference and current measurement period according to determined cell ID changes number of times, determines the present speed rank of this UE; TAU number difference is under non-0 the situation, poor according to determined TAU number, determine the present speed rank of this UE, when determining to reconfigure the TA rank of this UE correspondence, this speed step is sent to MME, request MME carries out the TA rank and reshuffles, and receives the TA rank that reconfigures that comes from MME, upgrades the TA rank of this UE correspondence;
Described MME is used for according to the speed step that receives, for this UE reconfigures the TA rank, and the TA rank that reconfigures is sent to UE.
System according to the present invention further comprises:
The evolution Radio Access Network is used for carrying out transparent transmission between described UE and MME.
In addition, the UE that the present invention also provides a kind of TA of being used for rank to reshuffle, this UE comprises:
Speed step is measured and determination module, be used to write down TAU number of tracing section updating and the cell ID Cell ID change number of times of UE, when the measurement period that sets in advance expired, difference was counted in TAU time between the cycle of predetermined period number apart of definite current measurement period that is write down and front and cell ID change number of times is poor; Equal TAU number difference under 0 the situation, the cell ID that changes number of times difference and current measurement period according to determined cell ID changes number of times, determines the present speed rank of this UE; TAU number difference is under non-0 the situation, poor according to determined TAU number, determines the present speed rank of this UE, and when determining to reconfigure the TA rank of this UE correspondence, this speed step is sent;
TA rank memory module is used to store and upgrade the TA rank of this UE correspondence;
Communication module among the UE, the speed step that is used for coming from speed step measurement and determination module sends, and receives the TA rank that reconfigures and also submits to TA rank memory module.
Wherein, described TA rank memory module be further used for will self storage the TA rank of this UE correspondence send to communication module among the described UE;
The TA rank that communication module among the described UE is further used for coming from TA rank memory module sends.
Wherein, described speed step measurement and determination module comprise:
Timer is used to provide the measurement period that sets in advance;
The change in location sub module stored, interior TAU number of tracing section updating and the cell ID Cell ID of each measurement period that being used to store timer provides changes number of times;
Calculate comparison sub-module, be used to store the corresponding relation between set in advance TAU time number difference and speed step and CellID change number of times and the speed step, from the change in location sub module stored, read current period and front TAU number and Cell ID change number of times at a distance of cycle of predetermined period number, it is poor to calculate TAU number difference and Cell ID change number of times, and utilizes described corresponding relation to determine the present speed rank of UE.
Wherein, described speed step measurement and determination module further comprise:
Counter is used for that TAU number and Cell ID are changed number of times and carries out record, and TAU number in the current measurement period that timer is provided and Cell ID change number of times are submitted to described change in location sub module stored.
Wherein, described counter comprises:
TAU counter is used to write down number TAU time;
Cell ID changes time counter, is used to write down ID number of Cell.
In addition, the present invention also provides a kind of being used for that user equipment (UE) is carried out the Mobility Management Entity MME that tracking area TA rank is reshuffled, and this MME comprises:
TA rank configuration module is used for according to coming from the speed step of UE, for this UE reconfigures the TA rank, and the TA rank that reconfigures is sent;
Communication module among the MME is used to receive the speed step that comes from UE, and this speed step is submitted to TA rank configuration module, and the TA rank that will come from TA rank configuration module sends to UE.
Wherein, described TA configuration module comprises:
The corresponding relation sub module stored is used to store the speed step of UE and the corresponding relation between the TA rank;
The control submodule, be used for receiving the speed step that comes from UE that the communication module of MME is submitted to, corresponding relation from the corresponding relation sub module stored between reading speed rank and the TA rank for UE reconfigures the TA rank, and sends to communication module among the MME with the TA rank that reconfigures.
Wherein, described TA configuration module further comprises:
TA rank record sub module is used to write down the up-to-date TA rank of UE correspondence, and upgrades under the control of described control submodule.
Wherein, the communication module among the described MME is further used for receiving the TA rank of the current correspondence that comes from UE and the TA rank that reconfigures, and the TA rank that receives is submitted to described control submodule;
Described control submodule is further used for the TA rank of the current correspondence of UE is compared with the TA rank in the described TA rank logging modle, determine comparative result, and the TA rank that reconfigures that will receive sends to described TA rank record sub module.
Use the present invention, can be according to the translational speed of UE, the TA rank of this UE correspondence is reconfigured.Particularly, the present invention has following beneficial effect:
In the present invention, the speed step that MME utilizes UE to report according to the speed step of self preserving and other corresponding relation of TA level, is determined the TA rank that UE is fit under current speed step, and mutual by with UE, carries out the TA rank and reshuffles.Like this, make the 3G network of evolution to realize other dynamic-configuration of TA level, thereby the feasible corresponding larger area TA of the UE rank that is under the fair speed is in than the TA rank of the UE correspondence under the low velocity than small size according to the translational speed of UE.The frequent TAU that therefore can reduce the corresponding small size TA of high speed UE to a great extent and bring, and the corresponding large tracts of land TA of low speed UE and the large tracts of land paging that brings, thus the Internet resources that take at the mobile management of UE under the idle condition saved greatly.
In addition, the Cell ID change number of times of TAU number difference of different cycles and current period before and after UE utilizes among the present invention, simple to operate, be convenient to realization, and make network side carrying out the TA rank when reshuffling, have foundation and the standard being convenient to quantize.
Description of drawings
Fig. 1 is the system construction drawing of existing 3G network.
Fig. 2 is the configuration schematic diagram of classification TA in the evolution 3G network.
Fig. 3 is for being used to dispose the structural representation of other system of TA level in the embodiment of the invention.
Fig. 4 is the flow chart of TA rank method for reconfiguration in the embodiment of the invention.
Fig. 5 is the method for measurement flow chart that the UE translational speed changes in the embodiment of the invention.
Embodiment
For making purpose of the present invention, technical scheme clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
Reconfigure in other method of TA level for changing in the present invention based on the UE translational speed, user equipment (UE) is measured certainly in current speed step, and when determining to reconfigure the TA rank of this UE correspondence, this speed step is sent to Mobility Management Entity MME in the evolution core net, and request MME carries out the TA rank and reshuffles; Then, MME is according to the speed step that receives, for this UE reconfigures the TA rank, and the TA rank that reconfigures sent to UE, and UE is the TA rank that receives with the TA grade renewal of self correspondence.
Fig. 3 shows other system construction drawing of variation configuration TA level that is used in the embodiment of the invention according to the UE translational speed.This system comprise measure self translational speed change and initiate that the TA rank is reshuffled the UE of flow process, the translational speed situation of change that reports according to UE carries out MME that the TA rank reshuffles and the ERAN that plays the transparent transmission effect between UE and MME.
Referring to Fig. 3, UE comprises: speed step is measured and judging module, is used to measure the current speed step of this UE, and when determining to reconfigure the TA rank of this UE correspondence, speed step is sent.Further, this UE also comprises: TA rank memory module is used to store the TA rank of the current correspondence of UE, and in the time will reconfiguring the TA rank, the TA rank of being stored is sent; Communication module, be used under the control of speed step measurement and determination module, request MME carries out the TA rank and reshuffles, speed step measured and speed step that determination module draws and TA rank memory module in the current TA rank of preserving send to MME together, and the TA rank that MME reconfigures is notified to TA rank memory module.
Speed step is measured and determination module comprises: timer is used for determining the measurement period of UE change in location; TAU counter is used for record TAU the number that UE took place in the measurement period that timer provides; Cell ID changes time counter, is used for the number of times that record UE generation Cell ID changes in the measurement period that timer provides; The change in location sub module stored is used for changing time counter from TAU counter and Cell ID and reads and store TAU number and Cell ID change number of times in each measurement period; Calculate comparison sub-module, be used to store TAU the several corresponding relation that changes number of times and speed step with speed step and Cell ID that differs from that sets in advance, TAU the number and the Cell ID that read a certain measurement period of current measurement period and front from the change in location sub module stored change number of times, the content that is read is compared, utilize self institute's stored relation to determine the present speed rank of UE, determining whether to initiate the TA rank according to the threshold value of self storing reshuffles, and in the time will initiating the TA rank and reshuffle, the present speed rank is submitted to communication module among the UE.
Still referring to Fig. 3, MME comprises: the TA configuration module, be used for according to the speed step that receives, and for UE reconfigures the TA rank, and the TA rank that reconfigures sent; Communication module, the TA rank that reconfigures that is used for coming from the TA configuration module sends to UE.
The TA configuration module comprises: the corresponding relation sub module stored is used to store the speed step of UE and the corresponding relation between the TA rank; TA rank record sub module is used to write down the up-to-date TA rank of UE; The control submodule is used to receive speed step that comes from UE and the current TA rank that communication module is submitted to, according to the corresponding relation of preserving in the corresponding relation sub module stored, for UE reconfigures the TA rank, and upgrades TA rank record sub module.
Fig. 4 shows the embodiment that TA rank of the present invention is reshuffled flow process, and Fig. 5 shows the flow chart of UE measurement self translational speed situation of change among this embodiment.In the present embodiment, set in advance time-count cycle and UE speed step and other corresponding relation of TA level of timer among the UE, and this corresponding relation is kept among the MME.When expired the time-count cycle of timer, UE measured the self speed rank, and when determining to reconfigure the TA rank, UE initiates the TA rank and reshuffles flow process; Speed step and speed step of self preserving and TA rank corresponding relation that MME reports according to UE are UE configuration TA rank again.
Referring to Fig. 4, change according to the UE translational speed in the present embodiment and carry out the method that the TA rank reshuffles and may further comprise the steps:
In step 401～402, UE determines by measuring the self speed rank whether translational speed changes, and when needs reconfigure the TA rank,, send to MME among the ECN with carrying other TA rank reconfiguration request message of present speed rank and current TA level by ERAN.
When UE determines to reconfigure the TA rank, calculate comparison sub-module and TA rank memory module and respectively the speed step of UE and current information such as TA rank are sent to communication module, communication module with the information that receives as cell, form TA rank reconfiguration request message, and send to MME by ERAN.
In step 403～404, after MME receives the TA rank reconfiguration request message that comes from UE, from this message, parse the speed step of UE and current TA rank, and according to speed step and other corresponding relation of TA level of self preserving, reconfigure the TA rank of this UE correspondence, and the TA rank that reconfigures is carried on the TA rank reshuffles and accept to return to UE by ERAN in the message.
Here, after the communication module among the MME receives the TA rank reconfiguration request message of ERAN transparent transmission, extraction rate rank and current TA rank from this message, and speed step and the current TA rank of being extracted sent to the control submodule.Then, the control submodule reads the current TA rank of this UE from TA rank record sub module, compare with the current TA rank that comes from communication module, and under the situation of both unanimities, the control submodule is an index with the speed step that receives, read speed step and other corresponding relation of TA level of preserving in the corresponding relation sub module stored, determine and the corresponding TA rank of speed step that receives.Then, the control submodule returns to communication module with determined TA rank, communication module with this TA rank as cell, composition TA rank is reshuffled and is accepted message, by ERAN this TA rank is reshuffled reception message again and return to UE, indicate MME and accepted UE, and disposed new TA rank about reconfiguring other request of TA level.
In step 405～406, UE adjusts to the TA rank that reconfigures with current TA rank, upgrades the keeping records of TA rank, and reshuffles acknowledge message to MME transmission TA rank.
In two steps herein, the communication module among the UE is reshuffled the TA rank of accepting to parse the message through reconfiguring from the TA rank that receives, and the TA rank that parses is submitted to TA rank memory module; TA rank memory module is the TA rank that receives with current TA grade renewal, and preserves new TA rank at self.Then, TA rank memory module sends to communication module among the UE with the TA rank that reconfigures, communication module is carried on the TA rank with the TA rank that receives and reshuffles in the acknowledge message, sends to MME by ERAN, and this UE of notice MME has been in the TA rank that reconfigures at present.
In step 407, MME reshuffles acknowledge message according to the TA rank that receives, and upgrades the TA class information of this UE correspondence of self preserving.
In this step, communication module among the MME receives after the TA rank reshuffles acknowledge message, therefrom parse the TA rank that reconfigures, and by the control submodule among the MME, the TA rank that parses is sent to TA rank record sub module, upgrade the TA class information of this UE correspondence of self preserving by TA rank record sub module.
So far, finished in the present embodiment translational speed and carried out the flow process that the TA rank is reshuffled based on UE.
By above-mentioned flow process as seen, present embodiment key point is that UE can know which kind of variation and present located speed step have taken place the translational speed of self.In the present embodiment, UE by to current period and the last week interim TAU number and Cell ID change number of times and compare, change number of times together with the Cell ID in the current period, determine the speed step of UE, and the situation of change of self speed.For the ease of determining whether the TA rank needs to change, set in advance TAU several difference limen value x of showing that the TA rank need increase in the present embodiment, show the 2nd TAU several difference limen value y that the TA rank need reduce and show that Cell ID that the TA rank need reduce changes the absolute value threshold value k that frequency threshold value z and Cell ID change the number of times difference, and x, z and k are positive number, and y is a negative.In addition, also set in advance corresponding relation between TAU number difference and speed step and Cell ID change number of times and the speed step in the present embodiment.Above-mentioned threshold value and corresponding relation all are kept in the calculating comparison sub-module of UE.Referring to Fig. 5, the process of UE measurement self speed step comprises:
Step 501～503.TAU time counter and Cell ID change the number of times counter O reset, and write down TAU the number of UE and the change number of times of Cell ID respectively; Judge whether timer expires, if then execution in step 504, otherwise, return in the execution in step 502 operation of TAU number of record and Cell ID change number of times.
For UE, the change number of times of the number of times of TAU and Cell ID is an important indicator of weighing this UE translational speed speed under idle condition.In other words, TAU time number is relevant with the number that the UE that is in idle condition passes through the TA identical with self current TA rank of living in, and TAU time number is many more, shows that the UE translational speed is fast more; And Cell ID change number of times and UE the number of sub-district of process relevant, CellID change number of times is many more, the translational speed of UE is fast more.
Step 504～505. counters stop counting, and TAU number being write down and Cell ID are changed number of times submit to the change in location sub module stored, relatively computing module reads TAU the number and the Cell ID change number of times in current period and last cycle from the change in location sub module stored, and compares.
When timer expires, show to arrive current measurement period in time that then two counters change number of times with TAU number of the current period that self writes down and Cell ID respectively and submit to the change in location sub module stored.Owing to preserve corresponding TAU number and Cell ID change number of times according to each measurement period in the change in location sub module stored, therefore relatively computing module can be a foundation with the data in the change in location sub module stored, gets access to the change in location information in current measurement period and the last measurement period.
Suppose that TAU number in the current measurement period is TAU
n, to change number of times be Δ CI to Cell ID
n, TAU number in the last measurement period is TAU
N-1, to change number of times be Δ CI to Cell ID
N-1, then the concrete operations that compare of this place are: calculate TAU number in adjacent two measurement periods poor=TAU
n-TAU
N-1, and the change number of times of Cell ID poor=Δ CI
n-Δ CI
N-1
Step 506～507. judge whether TUA number difference equals 0, if then execution in step 513; Otherwise whether TAU number difference be greater than 0, if greater than 0, then execution in step 508, if less than 0, then execution in step 511.
If TUA number difference equals 0, show that then UE has carried out the TAU of same number or do not carried out TAU in two adjacent cycles herein; If the TA number that TAU number difference, then shows UE process in current period greater than 0 is more than the TA number of interim process the last week, promptly the speed of UE improves; If TAU number difference less than 0, shows that then the speed of UE reduces.
TAU number difference judged greater than a TAU several difference limen value x in step 508～509. whether, if, judge that then UE speed improves, and determine UE present located speed step according to TAU number difference, then return execution in step 501; Otherwise, execution in step 514.
Surpass under the situation of TAU several difference limen value x TAU number difference, the present pairing TA rank of UE has been unsuitable for its current translational speed faster, therefore, the calculating comparison sub-module among the UE is judged that the TA rank of this UE correspondence need be reshuffled by the TA rank and is increased.In addition, the calculating comparison sub-module among the UE is an index with TAU several differences also, in the corresponding relation of TAU number difference of self preserving and speed step, retrieves UE present located speed step, and this speed step is sent to communication module among the UE; Simultaneously, the TA rank memory module among the UE also sends to communication module with the TA rank of the current correspondence of UE.
TAU number difference judged less than the 2nd TAU several difference limen value y in step 510～511. whether, if, judge that then UE speed reduces, and determine UE present located speed step according to TAU number difference, then carry out and return step 501; Otherwise, execution in step 514.
Under the situation of TAU number difference less than the 2nd TAU several difference limen value y, the present pairing TA rank of UE has been unsuitable for its current slower translational speed, therefore, the calculating comparison sub-module among the UE is judged that the TA rank of this UE correspondence need be reshuffled by the TA rank and is reduced.In addition, the calculating comparison sub-module among the UE is an index with TAU several differences also, in the corresponding relation of TAU number difference of self preserving and speed step, retrieves UE present located speed step, and this speed step is sent to communication module among the UE; Simultaneously, the TA rank memory module among the UE also sends to communication module with the TA rank of the current correspondence of UE.
Step 512～513. judge that the CeU ID of current period changes number of times and whether changes whether absolute value that frequency threshold value z and Cell ID change the number of times difference changes the number of times difference less than CellID absolute value threshold value k less than CellID, if all less than, judge that then UE speed reduces, and change number of times according to Cell ID and determine UE present located speed step, then return execution in step 501; Otherwise, execution in step 514.
Be under 0 the situation TAU several difference, if it is smaller that the Cell ID of current period changes number of times, and the Cell ID in current period and last cycle changes the absolute value of number of times difference less than certain value, showing then that UE is current is in state static or that move at a slow speed, therefore, need reshuffle by the TA rank and reduce the TA rank, to avoid resource waste.
At TAU number difference changes number of times and Cell ID change number of times difference less than TAU severals difference limen value x, greater than the 2nd TAU several difference limen value v and Cell ID absolute value all under the situation greater than respective threshold, bigger fluctuation does not appear in the translational speed that shows UE, then current pairing TA rank still is fit to, and therefore need not to reconfigure the TA rank.
So far, having finished in the present embodiment UE measures self velocity variations and determines whether to need to initiate the flow process that the TA rank is reshuffled.
Step 501 to 514 in, TAU number of adjacent periods and Cell ID are changed number of times compare, the present invention also can adopt be separated by cycle of fixed cycle number of TAU number of current period and Cell ID change number of times and front is compared.In such cases, can set in advance the measurement period spacing and count i, then TAU number poor=TAU
n-TAU
N-i, Cell ID changes number of times poor=Cell ID
n-CellID
N-i
By said method and system, the UE among the present invention can measure the variation and the present located speed step of self translational speed, and carries out alternately with MME among the ECN, and other is reshuffled to carry out the TA level according to speed step.Like this, the present invention can reduce effectively because of UE and frequently carry out the network resources waste that TAU and large tracts of land paging UE cause.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (20)
1. tracking area TA rank method for reconfiguration is characterized in that this method comprises:
A. user equipment (UE) is measured from current speed step, and when determining to reconfigure the TA rank of this UE correspondence, and this speed step is sent to Mobility Management Entity MME in the evolution core net, and request MME carries out the TA rank and reshuffles;
Described UE measures from comprising in current speed step: TAU number of tracing section updating and the cell ID Cell ID of record UE change number of times, when the measurement period that sets in advance expired, difference was counted in TAU time between the cycle of predetermined period number apart of definite current measurement period that is write down and front and cell ID change number of times is poor; Equal TAU number difference under 0 the situation, the cell ID that changes number of times difference and current measurement period according to determined cell ID changes number of times, determines the present speed rank of this UE; TAU number difference is under non-0 the situation, poor according to determined TAU number, determines the present speed rank of this UE;
B.MME is according to the speed step that receives, for this UE reconfigures the TA rank, and the TA rank that reconfigures sent to UE, and UE is the TA rank that receives with the TA grade renewal of self correspondence.
2. the method for claim 1, it is characterized in that, set in advance the corresponding relation that cell ID changes number of times and speed step, described cell ID according to cell ID change number of times difference and current measurement period changes number of times and determines that the present speed rank of this UE comprises:
The absolute value that changes the number of times difference at cell ID changes number of times difference limen value less than the cell ID that sets in advance, and when the cell ID of current measurement period change number of times changes frequency threshold value less than the cell ID that sets in advance, cell ID change number of times with current measurement period is an index, in described cell ID change number of times and speed step corresponding relation, retrieve corresponding speed step, as the present speed rank of this UE.
3. the method for claim 1 is characterized in that, sets in advance TAU time and counts the corresponding relation of difference and speed step, and described present speed rank according to TAU definite this UE of number difference comprises:
With described TAU several differences is index, retrieves corresponding speed step in the corresponding relation of described TAU number difference and speed step, as the present speed rank of this UE.
4. method as claimed in claim 3 is characterized in that, this method further comprises:
During greater than TAU severals difference limen value of setting in advance, judge that the speed of UE improves in described TAU number difference, need reconfigure the TA rank, and it is described according to TAU definite other operation of present speed level of number to continue execution;
During less than the 2nd TAU severals difference limen value of setting in advance, judge that the speed of UE reduces in described TAU number difference, need reconfigure the TA rank, and it is described according to TAU definite other operation of present speed level of number to continue execution.
5. the method for claim 1 is characterized in that, steps A is described to send to MME with speed step and ask MM to carry out TA rank reprovision and be changed to:
Described speed step is carried in the TA rank reconfiguration request message,, sends to described MME by evolution Radio Access Network ERAN.
6. the method for claim 1 is characterized in that, sets in advance speed step and other corresponding relation of TA level, and the described MME of step B for this UE reconfigures the TA rank is:
MME is an index with the speed step that receives, and retrieves corresponding TA rank from the speed step that sets in advance and other corresponding relation of TA level, as the TA rank that reconfigures for this UE.
7. the method for claim 1 is characterized in that, step B is described to send to UE with the TA rank that reconfigures and be:
MME is carried on the TA rank with the TA rank that reconfigures and reshuffles and accept in the message, by ERAN, sends to UE.
8. the method for claim 1 is characterized in that, further comprises after the described step B:
The TA rank that reconfigures that UE will receive returns to MME, carries out the TA rank and reshuffles affirmation; After MME receives the affirmation that comes from UE, upgrade the TA rank of this UE correspondence of preserving among this MME.
9. method as claimed in claim 8 is characterized in that, described UE returns to MME with the TA rank that reconfigures and carries out the TA rank and reshuffle and confirm as:
The TA rank that reconfigures that UE will receive is carried on the TA rank and reshuffles in the acknowledge message, returns to described MME by ERAN.
10. the method for claim 1 is characterized in that, steps A is described when speed step is sent to MME, and this method further comprises: UE sends to MME with current pairing TA rank;
After the described steps A, this method further comprises: the TA rank that MME is corresponding with this UE that self preserves with the TA rank that receives is compared, and when both are consistent, continues to carry out described step B.
11. one kind is used for the system that tracking area TA rank is reshuffled, and it is characterized in that this system comprises: the Mobility Management Entity MME of user equipment (UE) and evolution core net ECN, wherein,
Described UE is used to write down TAU number of tracing section updating and the cell ID Cell ID change number of times of UE, when the measurement period that sets in advance expired, difference was counted in TAU time between the cycle of predetermined period number apart of definite current measurement period that is write down and front and cell ID change number of times is poor; Equal TAU number difference under 0 the situation, the cell ID that changes number of times difference and current measurement period according to determined cell ID changes number of times, determines the present speed rank of this UE; TAU number difference is under non-0 the situation, poor according to determined TAU number, determine the present speed rank of this UE, when determining to reconfigure the TA rank of this UE correspondence, this speed step is sent to MME, request MME carries out the TA rank and reshuffles, and receives the TA rank that reconfigures that comes from MME, upgrades the TA rank of this UE correspondence;
Described MME is used for according to the speed step that receives, for this UE reconfigures the TA rank, and the TA rank that reconfigures is sent to UE.
12. system as claimed in claim 11 is characterized in that, described system further comprises:
The evolution Radio Access Network is used for carrying out transparent transmission between described UE and MME.
13. one kind is used for the user equipment (UE) that tracking area TA rank is reshuffled, and it is characterized in that this UE comprises:
Speed step is measured and determination module, be used to write down TAU number of tracing section updating and the cell ID Cell ID change number of times of UE, when the measurement period that sets in advance expired, difference was counted in TAU time between the cycle of predetermined period number apart of definite current measurement period that is write down and front and cell ID change number of times is poor; Equal TAU number difference under 0 the situation, the cell ID that changes number of times difference and current measurement period according to determined cell ID changes number of times, determines the present speed rank of this UE; TAU number difference is under non-0 the situation, poor according to determined TAU number, determines the present speed rank of this UE, and when determining to reconfigure the TA rank of this UE correspondence, this speed step is sent;
TA rank memory module is used to store and upgrade the TA rank of this UE correspondence;
Communication module among the UE, the speed step that is used for coming from speed step measurement and determination module sends, and receives the TA rank that reconfigures and also submits to TA rank memory module.
14. UE as claimed in claim 13 is characterized in that, described TA rank memory module be further used for will self storage the TA rank of this UE correspondence send to communication module among the described UE;
The TA rank that communication module among the described UE is further used for coming from TA rank memory module sends.
15. UE as claimed in claim 13 is characterized in that, described speed step is measured and determination module comprises:
Timer is used to provide the measurement period that sets in advance;
The change in location sub module stored, interior TAU number of tracing section updating and the cell ID Cell ID of each measurement period that being used to store timer provides changes number of times;
Calculate comparison sub-module, be used to store the corresponding relation between set in advance TAU time number difference and speed step and Cell ID change number of times and the speed step, from the change in location sub module stored, read current period and front TAU number and Cell ID change number of times at a distance of cycle of predetermined period number, it is poor to calculate TAU number difference and Cell ID change number of times, and utilizes described corresponding relation to determine the present speed rank of UE.
16. UE as claimed in claim 15 is characterized in that, described speed step is measured and determination module further comprises:
Counter is used for that TAU number and Cell ID are changed number of times and carries out record, and TAU number in the current measurement period that timer is provided and Cell ID change number of times are submitted to described change in location sub module stored.
17. UE as claimed in claim 16 is characterized in that, described counter comprises:
TAU counter is used to write down number TAU time;
Cell ID changes time counter, is used to write down ID number of Cell.
18. one kind is used for user equipment (UE) is carried out the Mobility Management Entity MME that tracking area TA rank is reshuffled, it is characterized in that this MME comprises:
TA rank configuration module is used for according to coming from the speed step of UE, for this UE reconfigures the TA rank, and the TA rank that reconfigures is sent;
Communication module among the MME is used to receive the speed step that comes from UE, and this speed step is submitted to TA rank configuration module, and the TA rank that will come from TA rank configuration module sends to UE;
Described TA configuration module comprises:
The corresponding relation sub module stored is used to store the speed step of UE and the corresponding relation between the TA rank;
The control submodule, be used for receiving the speed step that comes from UE that the communication module of MME is submitted to, corresponding relation from the corresponding relation sub module stored between reading speed rank and the TA rank for UE reconfigures the TA rank, and sends to communication module among the MME with the TA rank that reconfigures.
19. MME as claimed in claim 18 is characterized in that, described TA configuration module further comprises:
TA rank record sub module is used to write down the up-to-date TA rank of UE correspondence, and upgrades under the control of described control submodule.
20. MME as claimed in claim 18 is characterized in that, the communication module among the described MME is further used for receiving the TA rank of the current correspondence that comes from UE and the TA rank that reconfigures, and the TA rank that receives is submitted to described control submodule;
Described control submodule is further used for the TA rank of the current correspondence of UE is compared with the TA rank in the described TA rank logging modle, determine comparative result, and the TA rank that reconfigures that will receive sends to described TA rank record sub module.
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| EP2632214B1 (en) | 2008-01-31 | 2018-09-19 | NEC Corporation | Base station, mobility management entity, wireless communication system and method of wireless communication |
| CN101521871B (en) * | 2008-02-26 | 2010-10-27 | 大唐移动通信设备有限公司 | Method, device and system for updating tracking area |
| CN101754174B (en) * | 2008-12-19 | 2013-06-05 | 华为技术有限公司 | Method for acquiring corresponding relation, device and system therefor |
| WO2010102127A1 (en) * | 2009-03-04 | 2010-09-10 | Cisco Technology, Inc. | Detecting overloads in network devices |
| KR101090602B1 (en) * | 2010-01-29 | 2011-12-08 | 주식회사 팬택 | Method and Apparatus for managing paging area |
| CN102724650A (en) * | 2011-03-31 | 2012-10-10 | 中兴通讯股份有限公司 | Location management method and system thereof |
| EP2824961B1 (en) | 2012-04-12 | 2017-07-26 | Huawei Technologies Co., Ltd. | MOVEMENT INFORMATION PROCESSING METHODs AND ACCESS NETWORK DEVICE |
| CN105323815B (en) * | 2014-07-24 | 2019-11-05 | 南京中兴软件有限责任公司 | Method for network access and UE |
| CN104349368B (en) * | 2014-11-13 | 2016-11-23 | 深圳市中兴移动通信有限公司 | Circuit domain dropping CSFB time delay optimization method based on positional information, device and base station |
| CN106572481B (en) * | 2015-10-12 | 2020-10-23 | 中国移动通信集团公司 | Method and device for generating and configuring mobility management parameters, SCOP and MME |
| CN109417770B (en) * | 2016-09-30 | 2021-02-09 | 华为技术有限公司 | Position management method, control plane node and user equipment |
| CN109392035B (en) * | 2017-08-09 | 2022-04-22 | 华为技术有限公司 | RNA distribution method, network equipment and terminal |
| CN111083754B (en) * | 2019-11-27 | 2021-11-16 | 成都天奥集团有限公司 | Method for maintaining terminal tracking area irrelevant to cell switching under low-earth-orbit satellite communication system |
| CN111343657B (en) * | 2020-03-09 | 2023-02-24 | 中国联合网络通信集团有限公司 | Mobility management method, mobility management device, terminal device and storage medium |
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| CN1396784A (en) * | 2001-07-10 | 2003-02-12 | 株式会社Ntt都科摩 | Position registering system, mobile terminal, control equipment and position registering method |
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| CN1396784A (en) * | 2001-07-10 | 2003-02-12 | 株式会社Ntt都科摩 | Position registering system, mobile terminal, control equipment and position registering method |
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