CN103209445B - Reorientation method, apparatus and system - Google Patents
Reorientation method, apparatus and system Download PDFInfo
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- CN103209445B CN103209445B CN201210014094.9A CN201210014094A CN103209445B CN 103209445 B CN103209445 B CN 103209445B CN 201210014094 A CN201210014094 A CN 201210014094A CN 103209445 B CN103209445 B CN 103209445B
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Abstract
The invention discloses a kind of reorientation methods, apparatus and system, this method comprises: the terminal in the commonly connected state of UMTS receives the frequency point information and maximum redirection time value of the LTE frequency point to be measured from RNC, wherein, it is maximum duration value of the RNC to the serving cell for being redirected in LTE system of terminal distribution that maximum, which redirects time value, and corresponding with the redirection capability indication information of terminal；Terminal determines serving cell to be redirected in maximum redirect according to frequency point information in time value；Terminal is initiated to redirect to serving cell to be redirected.In the embodiment of the present invention, terminal in commonly connected state determines serving cell to be redirected by fully search in maximum redirect in time value, and the redirection whereabouts of the terminal can be in the purview of RNC, to ensure that reliable mobile of the terminal from UMTS system to LTE system.
Description
Technical field
The present invention relates to the communications fields, in particular to a kind of reorientation method, apparatus and system.
Background technique
Universal Mobile Communication System (Universal Mobile Telecommunications System, referred to as
UMTS) in 3G network, universal land radio access web (Universal Terrestrial Radio Access Network,
Referred to as UTRAN) it include radio network controller (Radio Network Controller, referred to as RNC) and base station NodeB
(NB) two kinds of basic network elements.In long term evolution (Long Term Evolution, referred to as LTE) 4G network, evolved is logical
With land radio access web (Evoluted Universal Terrestrial Radio Access Network, referred to as E-
It UTRAN) include a kind of basic network element of evolved base station eNodeB (eNB).In operator by the 3G UMTS network of deployment towards 4G
In the long process of LTE network evolution, necessarily there is a very long time, two kinds of systems are existed simultaneously and cooperated, jointly
Carry from or be sent to the task of the downlink of mobile core network side or the user data transmission of uplink.Such as: certain fortune
Seeking quotient, there are two carrier frequency point resources F1, F2, and F1 is distributed to 3G UMTS network operation and is used, and F2 is distributed to 4G LTE
Network operation uses.To Mr. Yu be provided simultaneously with 3G and 4G access function terminal (dual-mode terminal, have 3G 4G network take
The ability of data transmission and wireless signal measurement is realized in cell of being engaged in), if be in certain serving cell on UMTS F1 frequency point
Idle state or paging state, can by way of based on the other cell reselection of different priorities, in gravity treatment to target F2 frequency point certain
In a suitable LTE serving cell；And if terminal is in proprietary connected state CELL_DCH, it can be switched by cross-system and be flowed
Journey is switched on target F2 frequency point in some suitable LTE serving cell, and in handoff procedure, new carrying user applies number
According to 4G radio bearer will be re-established in target LTE cell, and old carrying user will using the 3G radio bearer of data
It is deleted in the UMTS cell of source.
In the umts system, as (such as PoC, Push email and VPN connect by a large amount of smart phones and " always-on "
Connect) etc. low discharges business appearance, CELL_FACH application will be more and more extensive, residence time of the terminal in CELL_FACH
It more next will grow.But data volume lesser background business frequent for those described above transmission or the business with heartbeat feature are answered
With, by terminal repeatedly between CELL_DCH and CELL_FACH state migration and it is improper.In order to avoid frequent radio resource
(Radio Resource Control, the referred to as RRC) state of control shifts generated signaling to network capacity and performance row
At impact, terminal will it is resident for a long time in the cell -- fach state, completed by wireless public resource to these business
It supports.Since under CELL_FACH state, terminal needs to monitor always the data-signal of common down channel, therefore measures downlink
The idle opportunity (Measurement Occasions measurement is idle) of pilot tone is very limited, is only capable of to one in UMTS system
A little frequency points carry out limited measurement, and cannot measure to any frequency point of LTE system.So if terminal is in public for a long time
Connected state CELL_FACH does not have also at present since terminal or network do not have the radio quality information of any target LTE frequency point altogether
Having standardized technology to can be realized terminal, system reliably moves from 3G to 4G, and gravity treatment or switching flow are all not all right, but mesh
Preceding industry, which is being studied based on enhanced redirection process, realizes that system reliably moves terminal from 3G to 4G.
Using existing redirection process, RNC issues redirection message: RRC connection release message (RRC Connection
Release), cell " E-UTRA Target Info " therein includes the information of several LTE target frequency points.So terminal must
It must interrupt and be connected with the RRC of source 3G serving cell and related upper-layer service first.Within the time later, terminal will be as possible in net
Suitable 4G serving cell is searched on several LTE target frequency points of network instruction.If it is found, then re-establishing 4GRRC connection
It is carried with related service, so terminal enters the blind search state of the local target serving district LTE if it is not found, in office
Suitable 4G serving cell is searched in the LTE frequency point that can detecte of anticipating.Whole process, terminal are in one kind and network connection
Disconnected unpredictable state will continue to influence user experience, in addition the network also final 4G serving cell of unforeseeable terminal
Whereabouts.
Summary of the invention
The present invention provides a kind of reorientation methods, apparatus and system, at least to solve in the related technology, if terminal is long
Time is in commonly connected state, and the idle opportunity for measuring descending pilot frequency is limited, in this way, being moved in the terminal from UMTS system
During LTE system the problem of the redirection whereabouts of the unforeseeable terminal.
According to an aspect of the invention, there is provided a kind of reorientation method, comprising: the end in the commonly connected state of UMTS
Termination receives the frequency point information and maximum redirection time value of the LTE frequency point to be measured from RNC, wherein when maximum redirects
Between value be maximum duration value of the RNC to the serving cell for being redirected in LTE system of terminal distribution, and the weight with terminal
Capacity of orientation indicates that information is corresponding；Terminal determines service to be redirected in maximum redirect according to frequency point information in time value
Cell；Terminal is initiated to redirect to serving cell to be redirected.
Preferably, terminal determines serving cell packet to be redirected in maximum redirect according to frequency point information in time value
It includes: being redirected in time value in maximum, serving cell of the terminal searching into the LTE system for meeting frequency point information；Terminal determines
The serving cell searched is as serving cell to be redirected.
Preferably, terminal determines that serving cell to be redirected also wraps according to frequency point information in maximum redirect in time value
Include: when maximum measurement reports time value to reach, terminal does not search the serving cell met in the LTE system of frequency point information；Eventually
Hold the source serving cell in determining UMTS as serving cell to be redirected.
Preferably, terminal determines that serving cell to be redirected also wraps according to frequency point information in maximum redirect in time value
Include: when maximum measurement reports time value to reach, terminal does not search the serving cell met in the LTE system of frequency point information；Eventually
Hold other serving cells in addition to the serving cell of source in determining UMTS as serving cell to be redirected.
Preferably, terminal determines that serving cell to be redirected also wraps according to frequency point information in maximum redirect in time value
Include: when maximum measurement reports time value to reach, terminal does not search the serving cell met in the LTE system of frequency point information；Eventually
End carries out blind search in local LTE system；The serving cell that terminal obtains blind search is as serving cell to be redirected.
Preferably, terminal determines that serving cell to be redirected also wraps according to frequency point information in maximum redirect in time value
Include: when maximum measurement reports time value to reach, terminal does not search the serving cell met in the LTE system of frequency point information；?
In the case that terminal also receives the additional redirection time value from RNC, terminal is searched for completely in additional redirect in time value
Serving cell in the LTE system of sufficient frequency point information, wherein the additional time value that redirects is that RNC is used for again to terminal distribution
It is directed to value additional time of the serving cell in LTE system, and corresponding with the redirection capability indication information of terminal；Terminal
It determines in the additional serving cell searched in time value that redirects as serving cell to be redirected.
Preferably, terminal determines serving cell packet to be redirected in maximum redirect according to frequency point information in time value
Include: terminal sends the sequence of frequency point information according to RNC, and LTE frequency point to be measured is ranked up；Terminal is sorting preceding one
Or the serving cell met in the LTE system of frequency point information is searched in multiple LTE frequency points to be measured；Terminal determination searches
Serving cell is as serving cell to be redirected.
Preferably, terminal determines serving cell packet to be redirected in maximum redirect according to frequency point information in time value
Include: terminal determines serving cell to be redirected in the time span of equal part according to frequency point information, and wherein the time of equal part is long
Degree is that the maximum time value that redirects is calculated divided by the number of LTE frequency point to be measured.
According to another aspect of the present invention, a kind of reorientation method is provided, comprising: RNC is received from UMTS
The redirection capability indication information of the terminal of commonly connected state, wherein redirecting capability indication information is used to indicate terminal to service
Cell initiates the ability redirected；RNC sends the frequency point information of LTE frequency point to be measured to terminal and indicates to believe with redirection ability
The corresponding maximum redirection time value of manner of breathing, wherein it is that RNC is used to be redirected to terminal distribution that maximum, which redirects time value,
The maximum duration value of serving cell in LTE system.
According to an aspect of the invention, there is provided a kind of redirection device, is applied to terminal, comprising: receiving module is used
In the frequency point information that when terminal is in the commonly connected state of UMTS, receives the LTE frequency point to be measured from RNC and maximum redirect
Time value, wherein it is serving cell for be redirected in LTE system of the RNC to terminal distribution that maximum, which redirects time value,
Maximum duration value, and it is corresponding with the redirection capability indication information of terminal；Determining module, for redirecting the time in maximum
Serving cell to be redirected is determined in value according to frequency point information；Initiation module, for being initiated to serving cell to be redirected
It redirects.
According to another aspect of the present invention, a kind of redirection device is provided, RNC is applied to, comprising: receiving module is used
In receiving the redirection capability indication information from the terminal in the commonly connected state of UMTS, wherein redirecting capability indication information
It is used to indicate terminal and initiates the ability redirected to serving cell；Sending module, for sending LTE frequency point to be measured to terminal
Frequency point information and maximum redirection time value corresponding with capability indication information is redirected, wherein maximum redirects time value
It is maximum duration value of the RNC to the serving cell for being redirected in LTE system of terminal distribution.
In accordance with a further aspect of the present invention, a kind of Redirectional system, including RNC and terminal are provided, wherein RNC includes:
First receiving module, for receiving the redirection capability indication information from the terminal in the commonly connected state of UMTS, wherein weighing
Capacity of orientation instruction information is used to indicate terminal and initiates the ability redirected to serving cell；Sending module, for being sent out to terminal
Send the frequency point information of LTE frequency point to be measured and maximum redirection time value corresponding with capability indication information is redirected, wherein
It is maximum duration value of the RNC to the serving cell for being redirected in LTE system of terminal distribution that maximum, which redirects time value,.
Terminal includes: the second receiving module, for when terminal be in the commonly connected state of UMTS, reception from RNC to
Measure the frequency point information and maximum redirection time value of LTE frequency point, wherein it is RNC to terminal distribution that maximum, which redirects time value,
The serving cell for being redirected in LTE system maximum duration value, and the redirection capability indication information phase with terminal
It is corresponding；Determining module, for determining serving cell to be redirected in time value according to frequency point information in maximum redirect；It initiates
Module, for initiating to redirect to serving cell to be redirected.
In the embodiment of the present invention, the terminal in commonly connected state is redirected in time value in maximum by fully searching for
Determine serving cell to be redirected, and the redirection whereabouts of the terminal can be in the purview of RNC, to ensure that this
Reliable mobile of the terminal from UMTS system to LTE system.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart one of reorientation method according to an embodiment of the present invention；
Fig. 2 is the flowchart 2 of reorientation method according to an embodiment of the present invention；
Fig. 3 is the flow chart of the method for relocating of preferred embodiment one according to the present invention；
Fig. 4 is the flow chart of the method for relocating of preferred embodiment two according to the present invention；
Fig. 5 is the structural block diagram of redirection device according to an embodiment of the present invention (terminal side)；
Fig. 6 is the structural block diagram one of redirection device according to the preferred embodiment of the invention (terminal side)；
Fig. 7 is the structural block diagram two of redirection device according to the preferred embodiment of the invention (terminal side)；
Fig. 8 is the structural block diagram three of redirection device according to the preferred embodiment of the invention (terminal side)；
Fig. 9 is the structural block diagram four of redirection device according to the preferred embodiment of the invention (terminal side)；
Figure 10 is the structural block diagram five of redirection device according to the preferred embodiment of the invention (terminal side)；
Figure 11 is the structural block diagram of redirection device according to an embodiment of the present invention (side RNC)；
Figure 12 is the structural block diagram of Redirectional system according to an embodiment of the present invention.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
The present invention provides a kind of reorientation method, Fig. 1 is the flow chart of reorientation method according to an embodiment of the present invention
One, as shown in Figure 1, including the following steps, namely S102 to step S106.
Step S102, the terminal in the commonly connected state of UMTS receive the frequency point letter of the LTE frequency point to be measured from RNC
Breath redirects time value with maximum, wherein it is that RNC is used to be redirected to LTE system to terminal distribution that maximum, which redirects time value,
The maximum duration value of serving cell in system, and it is corresponding with the redirection capability indication information of terminal.
Step S104, terminal determine serving cell to be redirected in maximum redirect according to frequency point information in time value.
Step S106, terminal are initiated to redirect to serving cell to be redirected.
In the related technology, if terminal is in commonly connected state for a long time, the idle opportunity for measuring descending pilot frequency is limited,
In this way, during the terminal is moved to LTE system from UMTS system the unforeseeable terminal redirection whereabouts.The present invention
In embodiment, the terminal in commonly connected state redirects to be redirected by fully search determination in time value in maximum
Serving cell, and the redirection whereabouts of the terminal can be in the purview of RNC, to ensure that the terminal from UMTS system
To the reliable mobile of LTE system.
Preferably, step S104 includes: to redirect in time value (being denoted as T) in maximum, and terminal searching is believed to frequency point is met
Serving cell in the LTE system of breath；Terminal determines the serving cell searched as serving cell to be redirected.
On the other hand, in above-mentioned steps S104, if maximum measurement reports time value to reach, terminal does not search satisfaction
Serving cell in the LTE system of frequency point information then has three ways, such as following determining serving cell to be redirected.Separately below
It is introduced.
(1) when maximum measurement reports time value to reach, terminal does not search the service met in the LTE system of frequency point information
Cell；Terminal determines the source serving cell in UMTS as serving cell to be redirected.
(2) when maximum measurement reports time value to reach, terminal does not search the service met in the LTE system of frequency point information
Cell；Terminal determines other serving cells in addition to the serving cell of source in UMTS as serving cell to be redirected.
(3) when maximum measurement reports time value to reach, terminal does not search the service met in the LTE system of frequency point information
Cell；Terminal carries out blind search in local LTE system；The serving cell that terminal obtains blind search is as clothes to be redirected
Business cell.
In addition, in order to further ensure terminal redirects whereabouts can be in the purview of RNC, and the terminal is from UMTS system
It unites to the reliable mobile of LTE system, the present invention also provides a kind of preferred embodiments, and other than maximum redirects time value, RNC is also
Additional redirection time value can be configured to terminal, so above-mentioned steps S104 further include: maximum measurement reports time value to reach
When, terminal does not search the serving cell met in the LTE system of frequency point information；It is also received in terminal additional from RNC
In the case where redirecting time value, clothes of the terminal in the additional LTE system for redirecting and being searched in time value and meeting frequency point information
Business cell, wherein the additional time value that redirects is serving cell for be redirected in LTE system of the RNC to terminal distribution
Value additional time, and it is corresponding with the redirection capability indication information of terminal；Terminal is determined to be redirected in time value additional
The serving cell searched is as serving cell to be redirected.
For determining serving cell to be redirected, the present invention also provides a kind of preferred embodiments, i.e., send out according to RNC
The sequence of frequency point information is sent to be ranked up band measurement LTE frequency point, specifically, above-mentioned steps S104 includes: that terminal is sent out according to RNC
LTE frequency point to be measured is ranked up by the sequence for sending frequency point information；Terminal is in the preceding one or more LTE to be measured that sorts
The serving cell met in the LTE system of frequency point information is searched in frequency point；Terminal determine the serving cell that searches be used as to
The serving cell of redirection.This preferred embodiment in the preceding one or more LTE frequency point to be measured that sorts by searching for
Serving cell into the LTE system for meeting frequency point information, so that terminal determines that the operation of serving cell to be redirected executes
Get up more convenient.
Preferably, terminal determines serving cell packet to be redirected in maximum redirect according to frequency point information in time value
Include: terminal determines serving cell to be redirected in the time span of equal part according to frequency point information, and wherein the time of equal part is long
Degree is that the maximum time value that redirects is calculated divided by the number of LTE frequency point to be measured.In this preferred embodiment, terminal is every
The same of the time span (T/N, N are the number in the target LTE frequency point of sequence front) of equal part is done in one LTE frequency point to be measured
The scanning survey of step and whole serving cells, the idle opportunity so as to avoid measurement descending pilot frequency are limited.It should be noted that
Other than equal part maximum redirects time value progress LTE target frequency point redirection mode to be measured, terminal also allows using other
Search time allocation schedule mode.
Above-mentioned preferred embodiment is understood below with reference to a simply example.The M LTE mesh that terminal configures RNC
Mark frequency point information, maximum redirection time value T (if being configured) and additional redirection time value Tadd (if being configured) are deposited
Storage is got off.It first turns on the maximum of a reverse countdown and redirects time timer, timing to T is time-out.Terminal is configured according to RNC
The target issued waits for the sequence of side LTE frequency point, and the T/N time span of equal part is done in N number of target LTE frequency point of sequence front
Synchronous and scanning survey.Here N can be the fixed value of air protocol agreement, such as 2 or 3, be also possible to network configuration to
The flexible value of terminal.
It should be noted that terminal may not necessarily complete top n in T/N time span due to the difference of terminal capability
The scanning survey of whole serving cells on LTE target frequency point.If the pilot signal quality of some 4G serving cell is strong
Degree (RSRQ or RSRP) meets suitable standard, for example measured value is greater than some threshold value of air protocol agreement, then eventually
End stops search immediately, and 4G RRC connection is initiated in that 4G serving cell and is established and radio bearer Establishing process.If most
Big redirection time timer time-out, still without finding suitable 4G serving cell, then terminal opens another positive meter
When additional redirection time timer, timing to Tadd be time-out.Then terminal continues from the N+1 LTE target frequency of sequence
Point continues searching, and the synchronization and scanning of Tadd/ (M-N) time span of equal part are done in the M-N target LTE frequency point below
Measurement.If the pilot signal quality or intensity of some 4G serving cell meet suitable standard, for example measured value is greater than sky
Some threshold value of mouth protocol conventions initiates 4G RRC connection then terminal stops search immediately in that 4G serving cell
Establishing process is carried with wireless traffic.If additional redirect time timer time-out, still without finding suitable 4G service
Cell.Whether terminal only supports to return to other 3G serving cells of source 3G serving cell according to its redirection or local is blind to be searched
Rope determines the whereabouts of final redirection.If terminal, which is supported to redirect, unsuccessfully returns to source 3G serving cell, network passes through
The terminal context information stored before restores 3G RRC connection and wireless traffic quickly through cell update process for terminal
Carrying；If terminal, which is supported to redirect, unsuccessfully returns to other any 3G serving cells, terminal can be searched at any one
3G RRC connection is initiated in the 3G serving cell that rope arrives and wireless traffic carries Establishing process；Otherwise, terminal enters local 4G clothes
Business cell blind search.
According to Current protocol, since RNC is by redirecting message: such as RRC connection release message (RRC Connection
Release), target LTE frequency point carrying cell " the E-UTRA Target Info " maximum for being allocated to terminal can only be comprising 8
LTE frequency point.If it is necessary, the LTE frequency point in " E-UTRA Target Info " can not also be divided into two parts, introduce
One " Additional E-UTRA Target Info " cell, for carrying additional target LTE frequency point information.In this way, most
The big redirection search for redirecting time timer application limiting terminal in " E-UTRA Target Info " frequency point, and add
Redirection of the time timer application limiting terminal in " Additional E-UTRA Target Info " frequency point is redirected to search
Rope.
The present invention also provides a kind of reorientation method, Fig. 2 is the process of reorientation method according to an embodiment of the present invention
Figure two, as shown in Fig. 2, including the following steps, namely S202 to step S204.
Step S202, RNC receive the redirection capability indication information from the terminal in the commonly connected state of UMTS,
The middle capability indication information that redirects is used to indicate the ability that terminal initiates redirection to serving cell.
Step S204, RNC to terminal send LTE frequency point to be measured frequency point information and with redirect capability indication information phase
Corresponding maximum redirection time value, wherein it is that RNC is used to be redirected to LTE to terminal distribution that maximum, which redirects time value,
The maximum duration value of serving cell in system.
In the related technology, RNC is not aware that the ability and the information in terms of load of serving cell in target LTE frequency point.Fig. 2
Shown in embodiment, RNC receives the redirection capability indication information of terminal itself that terminal reports, and RNC has known end
The ability for holding this respect, could be terminal in the entire redirection process preparation sufficiently long time, so that terminal can have abundance
Time fully searches for a series of LTE frequency points, and the redirection whereabouts of terminal can be in the purview of network later
It is interior.
Wherein, above-mentioned redirection capability indication information can be divided into following three kinds: (1) whether terminal supports network redirection
The constraint of conventional expiration timer search duration；(2) whether terminal is supported after redirecting conventional expiration timer time-out, after
Continue network redirection instruction target LTE frequency point except but belong to same operator SAME PLMN other LTE frequency points on after
The continuous search other one network building-out time；(3) whether terminal allows after redirecting conventional expiration timer time-out, in net
Network redirects except the target LTE frequency point indicated but belongs in other LTE frequency points of equivalent operator EPLMN and continues searching in addition
One network building-out time；(4) terminal whether support to redirect in front it is conventional in limited time+other one network building-out time it
Afterwards, can make great efforts to return to source 3G serving cell or any others 3G serving cell.
RNC passes through redirection message: such as RRC connection release message (RRC according to the ability of above-mentioned terminal
Connection Release), cell " E-UTRA Target Info " therein includes the letter of several LTE target frequency points
Breath.Further, whether RNC is redirected according to terminal only supports to arrive same operator SAME PLMN or equivalent operator
EPLMN, in that case it can be decided that the PLMN range of attributes of LTE target frequency point.The maximum redirection time whether is supported according to terminal redirection
Value and additional redirection time, maximum is optionally redirected time value T by RNC and additional redirection time value Tadd is allocated to end
End.Further, according to terminal redirect whether only support return to source 3G serving cell, in that case it can be decided that the length of Tadd and
Whether terminal should be retained in the related context information (UE Context) of source 3G serving cell.
It is described in detail below in conjunction with realization process of the example to the embodiment of the present invention.
Preferred embodiment one
Fig. 3 is the flow chart of the method for relocating of preferred embodiment one according to the present invention, as shown in figure 3, including following
Step S302 to step S308.
Step S302, terminal are controlled by common uplink channel CCCH cell update message Cell Update to 3G network
Device RNC reports it to support the enhanced redirection ability instruction of commonly connected state, and support to redirect conventional expiration timer and
Additional timer is redirected, after two timers are all overtime, terminal can return to any one 3G serving cell.This is preferred real
It applies in example, terminal supports the redirection to equivalent operator EPLMN.
Step S304, RNC pass through redirection message: such as RRC connection release message according to the ability of above-mentioned terminal
(RRCConnection Release), cell " E-UTRA Target Info " therein include the LTE frequency that 4 targets wait for side
Point information [F2, F3, F4, F5], then the LTE frequency point number M=4 to side, redirects the conventional time T=5s that prescribes a time limit, redirects
Additional time Tadd=5s.F2, F3, F4 belong to the network frequency point of source 3G serving cell same operator A, and F5 belongs to source 3G clothes
The network frequency point of the business equivalent operator B of cell.Network and terminal are about scheduled on the target LTE frequency point of sequence front according to air protocol
Number N=2.
Step S306, terminal open the maximum of a reverse countdown and redirect time timer, and timing to T=5s is time-out.
Terminal waits for the sequence of side LTE frequency point according to the target of RNC configuration distributing, and the T/N=2.5s time of equal part is done on F2, F3 frequency point
The synchronization of length and scanning survey.After redirecting conventional expiration timer time-out, terminal is suitable without discovery on F2, F3
The target serving district LTE.Then it opens and redirects additional timer, timing to Tadd=5s is time-out.Terminal continues to distinguish
On F4, F5, the synchronization of Tadd/ (M-N)=2s time span and the scanning survey of equal part are done, to search out suitable LTE mesh
Mark serving cell.
Step S308, adds and redirects time timer also time-out, and terminal is still suitable without discovery on F4, F5
4G serving cell.Because terminal, which is supported to redirect, unsuccessfully returns to other any 3G serving cells, then terminal is at any one
3G RRC connection is initiated in the 3G serving cell that may search for and wireless traffic carries Establishing process.
Preferred embodiment two
Fig. 4 is the flow chart of the method for relocating of preferred embodiment two according to the present invention, as shown in figure 4, including following
Step S402 to step S408.
Step S402, terminal are controlled by common uplink channel CCCH cell update message Cell Update to 3G network
Device RNC reports it to support the enhanced redirection ability instruction of commonly connected state, and support to redirect conventional expiration timer and
Additional timer is redirected, after two timers are all overtime, terminal can only return to source 3G serving cell.This preferred embodiment
In, terminal does not support the redirection of equivalent operator EPLMN.
Step S404, RNC pass through redirection message: such as RRC connection release message (RRC according to the ability of above-mentioned terminal
Connection Release), cell " E-UTRA Target Info " therein includes the LTE frequency point letter that 4 targets wait for side
It ceases [F6, F7, F8, F9], then the LTE frequency point number M=4 to side, redirects the conventional time T=6s that prescribes a time limit, redirect additional
Time Tadd=3s.F6, F7, F8, F9 belong to the network frequency point of source 3G serving cell same operator A.Network and terminal root
The target LTE frequency point number N=3 of sequence front is about scheduled on according to air protocol.
Step S406, terminal open the redirection routine expiration timer of a reverse countdown, and timing to T=6s is time-out.
Terminal waits for the sequence of side LTE frequency point according to the target of RNC configuration distributing, in F6, F7, when being the T/N=2s of equal part on F8 frequency point
Between length synchronization and scanning survey.After redirecting conventional expiration timer time-out, terminal is not sent out on F6, F7, F8
The now suitable target serving district LTE.Then it opens and redirects additional timer, timing to Tadd=3s is time-out.Terminal after
Continue on F9, the synchronization of Tadd/ (M-N)=3s time span and the scanning survey of equal part is done, to search out suitable LTE mesh
Mark serving cell.
Step S408 redirects additional timer also time-out, and terminal is on F9 still without finding suitable 4G service
Cell.Because terminal, which is only supported to redirect, unsuccessfully returns to source 3G serving cell, then above and below the terminal that network stores before
Literary information restores 3G RRC connection for terminal and wireless traffic carries quickly through cell update process.
It should be noted that step shown in the flowchart of the accompanying drawings can be in such as a group of computer-executable instructions
It is executed in computer system, although also, logical order is shown in flow charts, and it in some cases, can be with not
The sequence being same as herein executes shown or described step.
The embodiment of the invention provides a kind of redirection devices, are applied to terminal, which can be used to implement
Above-mentioned reorientation method shown in FIG. 1.Fig. 5 is the structural block diagram of redirection device according to an embodiment of the present invention (terminal side),
As shown in figure 5, including receiving module 52, determining module 54 and initiation module 56.Its structure is described in detail below.
Receiving module 52, for when terminal be in the commonly connected state of UMTS, to be measured LTE frequency point of the reception from RNC
Frequency point information and maximum redirect time value, wherein maximum redirect time value be RNC to terminal distribution for redirecting
The maximum duration value of serving cell into LTE system, and it is corresponding with the redirection capability indication information of terminal；Determining module
54, it is connected to receiving module 52, for connecing in received maximum redirect in time value of receiving module 52 according to receiving module 52
The frequency point information of receipts determines serving cell to be redirected；Initiation module 56 is connected to determining module 54, is used for determining module
54 serving cells to be redirected determined initiate to redirect.
Fig. 6 is the structural block diagram one of redirection device according to the preferred embodiment of the invention (terminal side), as shown in fig. 6,
Determining module 54 includes: the first search submodule 541, is connected to receiving module 52, in the received maximum of receiving module 52
It redirects in time value, searches the serving cell in the LTE system for meeting the received frequency point information of receiving module 52；First really
Stator modules 542 are connected to the first search submodule 541, the serving cell searched for determining the first search submodule 541
As serving cell to be redirected.
Fig. 7 is the structural block diagram two of redirection device according to the preferred embodiment of the invention (terminal side), as shown in fig. 7,
Determining module 54 further include: second determines submodule 543, is connected to receiving module 52, for received most in receiving module 52
When big measurement reports time value to reach, in the case where not searching the serving cell met in the LTE system of frequency point information, determine
Source serving cell in UMTS is as serving cell to be redirected.
Fig. 8 is the structural block diagram three of redirection device according to the preferred embodiment of the invention (terminal side), as shown in figure 8,
Determining module 54 further include: third determines submodule 544, is connected to receiving module 52, for received most in receiving module 52
When big measurement reports time value to reach, in the case where not searching the serving cell met in the LTE system of frequency point information, determine
Other serving cells in addition to the serving cell of source in UMTS are as serving cell to be redirected.
Fig. 9 is the structural block diagram four of redirection device according to the preferred embodiment of the invention (terminal side), as shown in figure 9,
Determining module 54 further include:
Second search submodule 545, is connected to receiving module 52, for reporting in the received maximum measurement of receiving module 52
When time value reaches, in the case where not searching the serving cell met in the LTE system of frequency point information, in local LTE system
Middle carry out blind search；4th determines submodule 546, the second search submodule 545 is connected to, for determining the second search submodule
The serving cell that 545 blind searches obtain is as serving cell to be redirected.
Figure 10 is the structural block diagram five of redirection device according to the preferred embodiment of the invention (terminal side), such as Figure 10 institute
Show, when maximum measurement reports time value to reach, the case where not searching the serving cell met in the LTE system of frequency point information
Under, determining module 54 further include: third searches for submodule 547, receiving module 52 is connected to, for also receiving in terminal itself
In the case where additional redirection time value from RNC, in the additional LTE system for redirecting search in time value and meeting frequency point information
Serving cell in system, wherein the additional time value that redirects is that RNC is used to be redirected in LTE system to terminal distribution
Value additional time of serving cell, and it is corresponding with the redirection capability indication information of terminal；5th determines submodule 548, even
It is connected to third search submodule 547, redirects the clothes that third search submodule 547 searches in time value additional for determining
Cell of being engaged in is as serving cell to be redirected.
The embodiment of the invention also provides a kind of redirection devices, are applied to RNC, which can be used to implement
Above-mentioned reorientation method shown in Fig. 2.Figure 11 is the structural block diagram of redirection device according to an embodiment of the present invention (side RNC),
As shown in figure 11, including receiving module 1102 and sending module 1104.Its structure is described in detail below.
Receiving module 1102, for receiving the redirection ability instruction letter from the terminal in the commonly connected state of UMTS
Breath initiates the ability redirected to serving cell wherein redirecting capability indication information and being used to indicate terminal；Sending module 1104,
It is connected to receiving module 1102, for sending the frequency point information of LTE frequency point to be measured to terminal and indicating to believe with redirection ability
The corresponding maximum redirection time value of manner of breathing, wherein it is that RNC is used to be redirected to terminal distribution that maximum, which redirects time value,
The maximum duration value of serving cell in LTE system.
The embodiment of the invention also provides a kind of Redirectional system, Figure 12 is Redirectional system according to an embodiment of the present invention
Structural block diagram, as shown in figure 12, including RNC1202 and terminal 1204.Its structure is described in detail below.
RNC1202 includes: the first receiving module 12022, is connected to terminal 1204, for receiving from public in UMTS
The redirection capability indication information of the terminal 1204 of connected state, wherein redirecting capability indication information is used to indicate terminal to service
Cell initiates the ability redirected；Sending module 12024, be connected to the first receiving module 12022 and terminal 1204 second connect
Receive module 12042, for the frequency point information of LTE frequency point to be measured is sent to terminal and with the first receiving module 12022 it is received
Redirect the corresponding maximum redirection time value of capability indication information, wherein it is RNC to terminal point that maximum, which redirects time value,
The maximum duration value for the serving cell for being redirected in LTE system matched.
Terminal 1204 includes: the second receiving module 12042, is connected to the sending module 12024 of RNC1202, at end
When holding 1204 state commonly connected in UMTS, the frequency point information and maximum for receiving the LTE frequency point to be measured from RNC1202 are reset
To time value, wherein it is RNC small to the service for being redirected in LTE system of terminal distribution that maximum, which redirects time value,
The maximum duration value in area, and it is corresponding with the redirection capability indication information of terminal；Determining module 12044 is connected to second and connects
Receive module 12042, for the second receiving module 12042 it is received it is maximum redirect in time value according to frequency point information determine to
The serving cell of redirection；Initiation module 12046 is connected to determining module 12044, for true to the second receiving module 12042
Fixed serving cell to be redirected initiates to redirect.
It should be noted that redirection device, system described in Installation practice correspond to above-mentioned embodiment of the method,
Its concrete implementation process had carried out detailed description in embodiment of the method, and details are not described herein.
In conclusion according to the abovementioned embodiments of the present invention, a kind of reorientation method, apparatus and system are provided.This hair
In bright, the terminal in commonly connected state determines service to be redirected by fully search in maximum redirect in time value
Cell, and the redirection whereabouts of the terminal can in the purview of RNC, thus ensure that the terminal from UMTS system to
The reliable mobile of LTE system.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
Be performed by computing device in the storage device, perhaps they are fabricated to each integrated circuit modules or by they
In multiple modules or step be fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific
Hardware and software combines.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (12)
1. a kind of reorientation method, characterized by comprising:
Terminal in the commonly connected state of Universal Mobile Communication System UMTS is received from the to be measured of radio network controller (RNC)
Measure the frequency point information and maximum redirection time value of long term evolution LTE frequency point, wherein the maximum time value that redirects is described
RNC to the terminal distribution the serving cell for being redirected in LTE system maximum duration value, and with the terminal
It is corresponding to redirect capability indication information；
The terminal determines serving cell to be redirected in maximum redirect according to the frequency point information in time value；
The terminal is initiated to redirect to the serving cell to be redirected.
2. the method according to claim 1, wherein terminal basis in the maximum redirection time value
The frequency point information determines that serving cell to be redirected includes:
In the maximum redirection time value, the terminal searching to the service in the LTE system for meeting the frequency point information
Cell；
The terminal determine described search to serving cell as the serving cell to be redirected.
3. according to the method described in claim 2, it is characterized in that, terminal basis in the maximum redirection time value
The frequency point information determines serving cell to be redirected further include:
When maximum measurement reports time value to reach, the terminal does not search the clothes in the LTE system for meeting the frequency point information
Business cell；
The terminal determines the source serving cell in UMTS as the serving cell to be redirected.
4. according to the method described in claim 2, it is characterized in that, terminal basis in the maximum redirection time value
The frequency point information determines serving cell to be redirected further include:
When maximum measurement reports time value to reach, the terminal does not search the clothes in the LTE system for meeting the frequency point information
Business cell；
The terminal determines other serving cells in addition to the serving cell of source in UMTS as the service to be redirected
Cell.
5. according to the method described in claim 2, it is characterized in that, terminal basis in the maximum redirection time value
The frequency point information determines serving cell to be redirected further include:
When maximum measurement reports time value to reach, the terminal does not search the clothes in the LTE system for meeting the frequency point information
Business cell；
The terminal carries out blind search in local LTE system；
The serving cell that the terminal obtains blind search is as the serving cell to be redirected.
6. the method according to any one of claim 2 to 5, which is characterized in that the terminal is in the maximum redirection
Serving cell to be redirected is determined in time value according to the frequency point information further include:
When maximum measurement reports time value to reach, the terminal does not search the clothes in the LTE system for meeting the frequency point information
Business cell；
In the case where the terminal also receives the additional redirection time value from the RNC, the terminal is described attached
It aggravates to search for the serving cell met in the LTE system of the frequency point information in orientation time value, wherein the additional redirection
Time value is additional time value of the RNC to the serving cell for being redirected in LTE system of the terminal distribution, and
It is corresponding with the redirection capability indication information of the terminal；
The terminal is determined in the additional serving cell searched in time value that redirects as the clothes to be redirected
Business cell.
7. the method according to any one of claims 1 to 5, which is characterized in that the terminal is in the maximum redirection
Determine that serving cell to be redirected includes: according to the frequency point information in time value
The terminal sends the sequence of the frequency point information according to the RNC, and the LTE frequency point to be measured is ranked up；
The terminal searches in the preceding one or more LTE frequency point to be measured that sorts meets the frequency point information
Serving cell in LTE system；
The terminal determine described search to serving cell as the serving cell to be redirected.
8. the method according to any one of claims 1 to 5, which is characterized in that the terminal is in the maximum redirection
Determine that serving cell to be redirected includes: the terminal in the time span of equal part according to the frequency point information in time value
Serving cell to be redirected is determined according to the frequency point information, wherein the time span of the equal part is the maximum redirection
Time value is calculated divided by the number of the LTE frequency point to be measured.
9. a kind of reorientation method, characterized by comprising:
Radio network controller (RNC) receives the redirection capability indication information from the terminal in the commonly connected state of UMTS,
Wherein the capability indication information that redirects is used to indicate the ability that the terminal initiates redirection to serving cell；
The RNC to the terminal send LTE frequency point to be measured frequency point information and with the redirection capability indication information phase
Corresponding maximum redirection time value, wherein the maximum time value that redirects is that the RNC is used for the terminal distribution
It is redirected to the maximum duration value of the serving cell in LTE system.
10. a kind of redirection device is applied to terminal, characterized by comprising:
Receiving module, for when the terminal be in the commonly connected state of UMTS, reception from radio network controller (RNC) to
Measure the frequency point information and maximum redirection time value of long term evolution LTE frequency point, wherein the maximum time value that redirects is institute
State RNC to the terminal distribution the serving cell for being redirected in LTE system maximum duration value, and with the terminal
Redirection capability indication information it is corresponding；
Determining module, for determining that service to be redirected is small according to the frequency point information in maximum redirect in time value
Area；
Initiation module, for initiating to redirect to the serving cell to be redirected.
11. a kind of redirection device is applied to RNC, characterized by comprising:
Receiving module, for receiving the redirection capability indication information from the terminal in the commonly connected state of UMTS, wherein institute
It states redirection capability indication information and is used to indicate the ability that the terminal initiates redirection to serving cell；
Sending module, for sending the frequency point information of LTE frequency point to be measured to the terminal and being indicated with the redirection ability
The corresponding maximum redirection time value of information, wherein the maximum time value that redirects is the RNC to the terminal distribution
The serving cell for being redirected in LTE system maximum duration value.
12. a kind of Redirectional system, including RNC and terminal, which is characterized in that
The RNC includes:
First receiving module, for receiving the redirection capability indication information from the terminal in the commonly connected state of UMTS,
Described in redirection capability indication information be used to indicate the terminal to serving cell initiate redirect ability；
Sending module, for sending the frequency point information of LTE frequency point to be measured to the terminal and being indicated with the redirection ability
The corresponding maximum redirection time value of information, wherein the maximum time value that redirects is the RNC to the terminal distribution
The serving cell for being redirected in LTE system maximum duration value；
The terminal includes:
Second receiving module, for receiving from radio network controller (RNC) when the terminal be in the commonly connected state of UMTS
Long term evolution LTE frequency point to be measured frequency point information and maximum redirect time value, wherein it is described maximum to redirect time value
The RNC to the terminal distribution the serving cell for being redirected in LTE system maximum duration value, and with it is described
The redirection capability indication information of terminal is corresponding；
Determining module, for determining that service to be redirected is small according to the frequency point information in maximum redirect in time value
Area；
Initiation module, for initiating to redirect to the serving cell to be redirected.
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| CN201210014094.9A CN103209445B (en) | 2012-01-17 | 2012-01-17 | Reorientation method, apparatus and system |
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| CN106332236B (en) * | 2015-07-02 | 2020-03-31 | 宏碁股份有限公司 | Method and communication device for improving band support |
| US10085181B2 (en) * | 2015-07-29 | 2018-09-25 | Qualcomm Incorporated | Mechanism to avoid ping pong during inter radio access technology redirection failure |
| CN107197504A (en) * | 2017-06-28 | 2017-09-22 | 深圳天珑无线科技有限公司 | The method and device of frequency access |
| CN107949016A (en) * | 2017-12-26 | 2018-04-20 | 广东欧珀移动通信有限公司 | The method for building up and relevant device of dedicated bearer |
| WO2020047731A1 (en) * | 2018-09-04 | 2020-03-12 | Oppo广东移动通信有限公司 | Information transmission method and device, and terminal |
| CN113613294A (en) * | 2021-07-28 | 2021-11-05 | 西安广和通无线软件有限公司 | Network access method, device, terminal equipment and storage medium |
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| CN101043697A (en) * | 2006-03-21 | 2007-09-26 | 华为技术有限公司 | Method for obtaining measurement gap in isofrequency, isosystem measurement |
| CN101547467A (en) * | 2008-03-24 | 2009-09-30 | 华为技术有限公司 | Method for establishing connection in communication network, user terminal and base station |
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| US8160590B2 (en) * | 2008-09-18 | 2012-04-17 | Infineon Technologies Ag | Method for determining the type of a mobile radio base station; radio communication terminal and network devices; radio communication smart card device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101043697A (en) * | 2006-03-21 | 2007-09-26 | 华为技术有限公司 | Method for obtaining measurement gap in isofrequency, isosystem measurement |
| CN101547467A (en) * | 2008-03-24 | 2009-09-30 | 华为技术有限公司 | Method for establishing connection in communication network, user terminal and base station |
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