CN101998555B - Method and system for cell reselection - Google Patents

Method and system for cell reselection Download PDF

Info

Publication number
CN101998555B
CN101998555B CN200910162738.7A CN200910162738A CN101998555B CN 101998555 B CN101998555 B CN 101998555B CN 200910162738 A CN200910162738 A CN 200910162738A CN 101998555 B CN101998555 B CN 101998555B
Authority
CN
China
Prior art keywords
rnc
cell
translational speed
cell reselection
community
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN200910162738.7A
Other languages
Chinese (zh)
Other versions
CN101998555A (en
Inventor
朱昀
谢玉堂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SUZHOU DACHENG YOUFANG DATA TECHNOLOGY Co.,Ltd.
Original Assignee
ZTE Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to CN200910162738.7A priority Critical patent/CN101998555B/en
Publication of CN101998555A publication Critical patent/CN101998555A/en
Application granted granted Critical
Publication of CN101998555B publication Critical patent/CN101998555B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a method for cell reselection, comprising the following steps that: a base station (Node B) is used for measuring the moving speed of a user terminal (User Equipment) in a cell covered by the base station (Node B) and reporting the moving speed to a radio network controller (RNC); the RNC is used for setting cell reselection parameters of the UE according to the reported moving speed of the UE and transmitting the parameters to all UE in the cell through the Node B; and the UE is used for measuring the cell according to the received parameters and executing the cell reselection according to a measuring result. The invention also discloses a system for cell reselection, solving the problem that the traditional cell reselection method can not be better suitable for the specific scenes similar to high-speed rail lines.

Description

A kind of method and system of cell reselection
Technical field
The present invention relates to the cell reselection technique in mobile communication, particularly relate to a kind of method and system of cell reselection.
Background technology
Modern Mobile Communications Systems is normally based upon in beehive net mode, so-called beehive net mode, namely by many regular hexagon communities as base unit, combined covering full wafer service area, thus the mobile radio communication forming shape similar honeycomb.User terminal (UE, User Equipment) is in a community and coupled together by radio channel between the network equipment, and along with the movement of UE, realizes handover and the function across local network automatic roaming between neighbor cell.
For 3-G (Generation Three mobile communication system), its wireless access network is made up of multiple RNS, each RNS includes a radio network controller (RNC, Radio NetworkController), multiple base station (NodeB) and a large amount of UE.When UE moves to another community from a community, cause cell reselection or switching.The difference of cell reselection and cell merge is: when the dedicated channel do not established (also referred to as UE at the idling mode), when UE moves to another community from a community, causes cell reselection (cell reselection); When foundation has dedicated channel (also referred to as UE in the connection mode), when UE moves to another community from a community, cause and switch (Handover).
The process that UE realizes cell reselection is as follows: when accessing current service cell (or referred to as Serving cell), UE is from the broadcast channel (BCH of this community, Broadcast Channel) upper receiving system message (SIB, System Information Block), and from SIB, obtain community (the be called neighbor cell) list adjacent with this Serving cell and required threshold parameter and timer parameter when carrying out cell reselection; UE periodically measures the received signal strength of current service cell, and in discovery measurement result lower than when determining threshold value, UE starts to measure the received signal strength of neighbor cell; If find that the received signal strength of certain neighbor cell is greater than the threshold value meeting resident condition, and the grade point of this community is higher than Serving cell, so this community becomes the community meeting reselection conditions; From all meet the community of reselection conditions choose the highest community of grade point and become optimal target re-selecting cell, if this community can at timer time T reselectinside remain the most applicable, then UE gravity treatment is to this community.
In prior art, parameter needed for cell reselection, such as the parameter, neighbor cell list etc. of threshold parameter, calculation plot grade point are all arranged by RNC and send to UE, and the value of these parameters is all get a fixed value according to the experience of engineering staff.
The process of cell reselection can be divided into again the two kind situations of UE under low speed and high-speed motion state, and both differences are timer time T reselectvalue: for UE under low-speed motion state, T reselectget a larger constant value, that is target re-selecting cell needs to keep the most applicable of long period could by gravity treatment; For UE under high-speed motion state, T reselectget a less constant value, that is target re-selecting cell needs to keep the most applicable of short period just can by gravity treatment.And judge UE be in low speed and high-speed motion state according to being: judge the timer T of UE before current time cRmaxwhether the number of times that cell reselection occurred in the time exceedes the threshold number N of setting cRif exceeded, then under thinking that UE is in high-speed motion state; Otherwise, under thinking that UE is in low-speed motion state.
But, in some reality scenes being similar to the line of high-speed railway shown in Fig. 1, adopt prior art to realize cell reselection can exist and judge the inaccurate problem of UE motion state: the foundation judging the motion state of UE due to prior art is the number of times that cell reselection occurs in the long period section of UE before current time, that is this judgement is delayed, but not instantaneous value, especially when bullet train is in the stage of accelerating or brake, such judgement often has very large error; Further, with the T having error reselectaffect cell reselection, UE may be caused to miss the best opportunity of cell reselection, or the situation of UE gravity treatment back and forth (being called ping-pong) in minizone occurs.
Further, RNC carries out desired parameters (such as Received signal strength threshold value, some parameters of calculation plot grade point) of cell reselection during arranging above-mentioned UE, in prior art, these optimum configurations are become fixed value by RNC.So just make to arrange shortage flexibility, lack the support to High-speed Circumstance.
In sum, adopt prior art arrange cell reselection parameters and carry out the method for cell reselection thereupon, the such special scenes of similar line of high-speed railway can not be applicable to preferably, thus make troubles to actual application of arranging net.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and the radio network controller (RNC) that arrange cell reselection parameters, arranges to solve prior art small area reselecting parameters the problem lacking and support High-speed Circumstance.
Accordingly, another object of the present invention is to the method and system that a kind of cell reselection is provided, to solve the problem that existing residence reselecting can not better be applicable under the such special scenes of similar line of high-speed railway.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of method of cell reselection, the method comprises:
Base station (NodeB) measurement obtains the translational speed of user terminal (UE) in its coverage cell and reports radio network controller (RNC);
The translational speed of the UE that described RNC reports according to NodeB arranges the parameter that UE carries out cell reselection, and the parameter of setting is sent to all UE in community by NodeB;
UE measures community according to the parameter received, and performs cell reselection according to measurement result.
At least one in following cell reselection parameters is arranged to the translational speed existence function relation with UE by described RNC: first timer time T 1with second timer time T reselect.
Described RNC arranges second timer time T reselectreduce with the increase of the translational speed of UE.
Described RNC is by linear function, or piecewise function, or is multiplied by and reduces factor pair T reselectarrange.
At least one in following cell reselection parameters is arranged to the translational speed existence function relation with UE by described RNC: in order to calculate the lag parameter Q of current service cell grade point hystwith the offset parameter Q in order to calculate neighbor cell grade point offsets.
The method comprises further: described RNC arranges Q hystreduce with the increase of the translational speed of UE, Q is set offsetsreduce with the increase of the translational speed of UE.
Described RNC by linear function or piecewise function to Q hystand Q offsetsin at least one arrange.
For the community of hierarchical network architecture, described RNC is by offset parameter TO between level nbe arranged to the translational speed existence function relation with UE, and, TO is set nreduce with the increase of the translational speed of UE.
Described RNC is by linear function, or piecewise function, or is multiplied by and reduces factor pair TO narrange.
High-speed railway or highway are adopted to the community of hierarchical network architecture cloth net mode along the line, described RNC is by the level priority (HCS_PRIO of private network community along the line 1) be arranged to low value, by the level priority (HCS_PRIO of public network cell 2) be arranged to high level, i.e. HCS_PRIO 2> HCS_PRIO 1.
UE is according to T 1perform and the measurement of community is specially: described UE is at T 1timing then, to the received signal strength S of current service cell xmeasure, by described S xcompare with the measurement triggering thresholding S preset, and at S xduring≤S, according to the neighbor cell list that RNC sends, the received signal strength of the neighbor cell in described neighbor cell list is measured;
Or described UE is at T 1timing time to before, with the received signal strength S of longer time cycle to current service cell xmeasure; At T 1timing time then, with the received signal strength S of shorter time cycle to current service cell xmeasure; By described S xcompare with the measurement triggering thresholding S preset, and at S xduring≤S, according to the neighbor cell list that RNC sends, the received signal strength of the neighbor cell in described neighbor cell list is measured.
The method comprises further:
The T that described RNC will be arranged 1send to UE, described UE is according to the T received 1perform the measurement to community;
Or, the T that described RNC will not be arranged 1send to UE, described RNC is according to T 1carry out timing, and trigger the measurement of described UE execution to community.
Described RNC arranges according to the translational speed of UE the parameter that UE carries out needed for cell reselection, comprise further: when described RNC is after the translational speed receiving multiple UE that NodeB reports, get the assembly average of the multiple translational speeds reported, and the parameter that UE carries out needed for cell reselection is set according to described assembly average.
Present invention also offers a kind of system of cell reselection, this system comprises: NodeB, RNC and UE, wherein,
Described NodeB, for measuring the translational speed that obtains UE in its coverage cell and reporting described RNC;
Described RNC, the translational speed for the UE reported according to NodeB arranges the parameter that UE carries out cell reselection, and the parameter of setting is sent to all UE in community by NodeB;
Described UE, for measuring community according to the parameter received, and performs cell reselection according to measurement result.
Described RNC is further used for, and at least one in following cell reselection parameters is arranged to the translational speed existence function relation with UE: first timer time T 1, second timer time T reselect, in order to calculate the lag parameter Q of current service cell grade point hystwith the offset parameter Q in order to calculate neighbor cell grade point offsets.
Described RNC is further used for, by offset parameter TO between level nbe arranged to the translational speed existence function relation with UE, and TO nbe arranged to the increase of the translational speed of UE and reduce.
High-speed railway or highway are adopted to the network of hierarchical network architecture cloth net mode along the line, described RNC is further used for, by the HCS_PRIO of private network community along the line 1be arranged to low value, by the HCS_PRIO of public network cell 2be arranged to high level, i.e. HCS_PRIO 2> HCS_PRIO 1.
Described UE is further used for, when not receiving the level priority of the level priority (HCS_PRIO) of current service cell or adjacent area, described UE acquiescence the level priority of adjacent area is arranged to identical with service area.
Present invention also offers a kind of method arranging cell reselection parameters, the method comprises:
Described RNC receives the translational speed of the UE that NodeB reports;
At least one in following parameter is arranged to the translational speed existence function relation with UE according to the translational speed of the UE received by described RNC: first timer time T 1, second timer time T reselect, in order to calculate the lag parameter Q of current service cell grade point hyst, in order to calculate the offset parameter Q of neighbor cell grade point offsets.
The method comprises further: described RNC arranges Q hystreduce with the increase of the translational speed of UE.
The method comprises further: described RNC arranges Q offsetsreduce with the increase of the translational speed of UE.
The method comprises further: described RNC arranges T reselectreduce with the increase of the translational speed of UE.
Described RNC by linear function or piecewise function to T 1, T reselect, Q hyst, Q offsetsin at least one arrange.
For hierarchical network architecture network, the method comprises further: described RNC according to the translational speed of UE received by offset parameter TO between level nbe arranged to the translational speed existence function relation with UE, and TO is set nreduce with the increase of the translational speed of UE.
High-speed railway or highway are adopted to the network of hierarchical network architecture cloth net mode along the line, the method comprises further: described RNC is by the HCS_PRIO of private network community along the line 1be arranged to low value, by the HCS_PRIO of public network cell 2be arranged to high level, i.e. HCS_PRIO 2> HCS_PRIO 1.
Present invention also offers a kind of RNC, comprising:
Receiver module, for receiving the translational speed of the UE that NodeB reports;
Parameter setting module, for being arranged to the translational speed existence function relation with UE according to the translational speed of the UE received by least one in following parameter: first timer time T 1, second timer time T reselect, in order to calculate the lag parameter Q of current service cell grade point hyst, in order to calculate the offset parameter Q of neighbor cell grade point offsets.
Described parameter setting module is further used for, and arranges Q hystreduce with the increase of the translational speed of UE, and/or Q is set offsetsreduce with the increase of the translational speed of UE, and/or T is set reselectreduce with the increase of the translational speed of UE.
Described parameter setting module is further used for, according to the translational speed of UE received by offset parameter TO between level nbe arranged to the translational speed existence function relation with UE, and TO is set nreduce with the increase of the translational speed of UE.
High-speed railway or highway are adopted to the network of hierarchical network architecture cloth net mode along the line, described parameter setting module is further used for, by the HCS_PRIO of private network community along the line 1be arranged to low value, by the HCS_PRIO of public network cell 2be arranged to high level, i.e. HCS_PRIO 2> HCS_PRIO 1.
A kind of method and RNC that cell reselection parameters is set provided by the present invention, the translational speed of UE is utilized accurately to reflect the motion state of UE, and have the effect of dynamic conditioning with the real-time change of UE translational speed, solve prior art under the scene such as such as high-speed railway (highway) is along the line, arranging cell reselection parameters arranges fixing, the problem of very flexible, can not adapt to the motion state problem of UE in real time.
Correspondingly, the method for a kind of cell reselection provided by the present invention, improves UE under High-speed Circumstance, carries out the accurate of cell reselection and promptness.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the MPS process of prior art high speed Along Railway;
Fig. 2 is the method flow diagram of a kind of cell reselection of the present invention;
Fig. 3 is the flow chart of the residence reselecting of the embodiment of the present invention one;
Fig. 4 is the schematic diagram of hierarchical network architecture in the embodiment of the present invention two;
Fig. 5 is the flow chart of the residence reselecting of the embodiment of the present invention two;
Fig. 6 is that the present invention realizes Q with piecewise function hystwith the schematic diagram of the corresponding relation of the translational speed of UE;
Fig. 7 is the composition structural representation of the system of a kind of cell reselection of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the present invention is further elaborated.
The method of a kind of cell reselection provided by the present invention, as shown in Figure 2, mainly comprises the following steps:
Step 201, NodeB obtains the translational speed of UE in its coverage cell by measurement and reports RNC.
NodeB measures the translational speed of UE in its coverage cell can in the following way: when UE is resident to certain community, this community is the current service cell of UE.Now, the frequency that one sends signal mutually can be arranged between UE and NodeB, when UE and NodeB communicates, UE sends signal with the frequency of this agreement to NodeB, but due to the impact of Doppler frequency shift produced when UE moves, there is deviation between the signal frequency of UE and the frequency of agreement in what result in that NodeB receives.NodeB obtains this deviation by real-time measurement, obtains the Doppler frequency shift of UE, and calculated the translational speed of UE by following formula further according to this deviation:
f d = V C COSθ
Wherein, V represents the translational speed of UE, f drepresent the Doppler frequency shift of the UE that NodeB measurement obtains, C represents the light velocity, and θ represents that UE signal arrives the angle of arrival of the antenna of NodeB, and θ is that NodeB is known.
In actual applications, due at line of high-speed railway, UE normally concentrates ON TRAINS, and therefore NodeB can collect the translational speed of numerous UE at short notice, and the translational speed reporting these UE to RNC concentrated.
The translational speed of UE is reported RNC by measurement report by NodeB, and so-called measurement report is a piece of news of NodeB to RNC report measurement results, and this measurement report comprises:
(1) identification number of this UE of unique identification, identification number can be the wireless link number (RL-id, Radio Link id) shared by this UE.
(2) NodeB is by measuring the translational speed of this UE of gained.
Preferably, can also comprise in this measurement report:
(3) NodeB measures the signal strength indicator that gained reflects this UE, such as: the signal interference ratio value (SIR of this UE signal, Signal Interference Ratio) or received signal power (RSCP, Received SignalCode Power) value etc.
(4) NodeB measures the Doppler frequency shift of this UE of gained.
Further, NodeB reports it to measure the translational speed of the UE of gained to RNC, directly can report the actual value of this speed; Or can report the grade point of this speed, grade point is made an appointment by RNC and NodeB, such as: the speed of 0-30m/s is predefined as grade A, the speed of 30-50m/s is predefined as grade B, and the speed of more than 50m/s is predefined as grade C.
Step 202, the translational speed of the UE that RNC reports according to NodeB arranges the parameter that UE carries out cell reselection, and the parameter of setting is sent to all UE in community by NodeB.
Preferably, for the situation reporting the translational speed of numerous UE in its coverage cell that NodeB concentrates, RNC is after receiving the translational speed of these UE, the process of further statistical average can be done, such as: get the mean value of the translational speed that these report, median, root mean square etc., the object of above-mentioned process is adopted to be that statistics obtains the value embodying the average level of the translational speed that these report, and then assembly average after processing, the foundation of cell reselection parameters is set as RNC.
At least one in following cell reselection parameters can be arranged to the translational speed existence function relation with UE by RNC:
In order to calculate the lag parameter Q of current service cell grade point hyst;
In order to calculate the offset parameter Q of neighbor cell grade point offsets;
Second timer time parameter T reselect; And
For the community of hierarchical network architecture, also comprise offset parameter TO between level n; And
RNC newly in addition can also introduce a first timer parameter T 1, and be set to the translational speed existence function relation with UE.
In addition, adopt for line of high-speed railway in the network of hierarchical network architecture, RNC also needs to arrange the native region priority parameter of Along Railway: by the level priority (HCS_PRIO of private network neighbor cell 1) be arranged to low value, by the level priority (HCS_PRIO of public network neighbor cell 2) be arranged to high level, i.e. HCS_PRIO 2> HCS_PRIO 1.
Step 203, UE measures community according to the parameter received, and performs cell reselection according to measurement result.
Elaborate further below in conjunction with the method for specific embodiment to above-mentioned cell reselection.In embodiments of the invention one, network configuration is non-layered networks, and as shown in Figure 3, the step that the translational speed according to UE realizes cell reselection is as follows:
Step 301, UE is resident to current service cell, and the NodeB of this Serving cell measures the translational speed of UE and reports RNC.
Step 302, RNC arranges according to the translational speed of the UE received the parameter that UE carries out cell reselection, and the parameter of setting is sent to UE by NodeB.
For the community of non-layered networks structure, RNC comprises according to the cell reselection parameters of the translational speed setting of the UE reported: first timer time T 1, second timer time T reselect, in order to calculate the lag parameter Q of current service cell grade point hyst, and offset parameter Q in order to calculate neighbor cell grade point offsets.Wherein, first timer time T 1it is the parameter that the present invention newly introduces.According to actual needs, RNC only can choose wherein one or more parameter and arrange according to the translational speed of UE, and remaining parameter can still be arranged by prior art.
The functional relation of parameter arranges specific as follows:
1, first timer time T 1: RNC can estimate according to the movement velocity of UE and geographic area, the community known the time that UE runs to Serving cell borderline region, and the set of time first timer time T that will estimate 1.T is set 1effect be trigger UE more accurately to start to measure the received signal strength of Serving cell.
2, in order to calculate the lag parameter Q of current service cell grade point hystwith the offset parameter Q in order to calculate neighbor cell grade point offsets:
Q hystbe arranged to the increase of the translational speed of UE and reduce, Q offsetsalso be arranged to the increase of the translational speed of UE and reduce.Preferably, if NodeB reports the actual value obtained measured by it directly to RNC before, so RNC can adopt linear function to realize the setting of above-mentioned parameter, such as: arrange Q hystwith the pass of the translational speed of UE be: Q hyst=Q hyst0-qv, wherein, Q hyst0represent Q hystfiducial value, be a constant value, q > 0, v represents the actual value of the translational speed of UE.If NodeB reports the translational speed of the UE obtained measured by it to RNC in the mode of grade point before, so RNC can adopt the mode of piecewise function to realize the setting of above-mentioned parameter, namely represents Q in piecewise function as shown in Figure 6 hystreduce with the increase of the translational speed of UE.
Q hystand Q offsetstwo parameters can only select one of them to arrange according to the translational speed of UE, and another is set to fixed value, also can two all arrange according to the translational speed of UE.
3, second timer time T reselect, T is set reselectwith the corresponding relation of the translational speed of UE be: T reselectreduce, T with the increase of the translational speed of UE reselectarrange and can adopt the mode of linear function or piecewise function to realize equally, such as: T is set reselect=T reselect0-uv, wherein, T reselect0represent T reselectfiducial value, u > 0; T reselectarrange and can also realize by being multiplied by a mode reducing the factor, such as, when RNC judges that UE translational speed is greater than some threshold values, T is set reselect=T reselect0s, 0 < s < 1, namely represent and reduce the factor.
T reselecteffect be weigh the community of the most applicable gravity treatment that is selected whether can finally by gravity treatment, if namely a neighbor cell is at T reselectcan remain the community of the most applicable gravity treatment in time, so UE meeting gravity treatment is to this neighbor cell.
In addition, RNC, while the translational speed according to UE arranges above-mentioned cell reselection parameters, is also provided with the parameter of other cell reselection, such as: the neighbor cell list etc. of measurement triggering thresholding S and UE, these are arranged still by existing techniques in realizing, repeat no more in the present invention.
The parameter of setting, after setting up all UE and carrying out the parameter of cell reselection, is sent to NodeB, then is transmitted to UE by NodeB by the SIB on the BCH of community by RNC.
In actual applications, first timer time T 1both can send to UE, also can not send to UE.If T 1send to UE, so UE is from receiving T 1time start timing, and at T 1timing time then, initiatively triggers and measures the received signal strength of current service cell; Or at T 1timing time, to before, is measured, at T with the longer time cycle 1timing time then, is measured with the shorter time cycle.If T 1do not send to UE, so RNC estimates T in inside 1while start timing, and at T 1timing time then, sends Trigger message to UE, triggers UE and starts to measure the received signal strength of current service cell.
Embodiment illustrated in fig. 3ly do not send T with RNC 1be that example is described to the situation of UE.
In actual applications, for T reselectby being multiplied by a situation reducing the factor to arrange, also can by RNC by T reselect0with reduce factor s and send to UE, then T is set by UE oneself reselect=T reselect0s realizes.
Step 303, RNC starts timer T 1, and at T 1timing time then triggers the received signal strength S that UE measures current service cell x.
Step 304, judges S xwhether be less than or equal to measurement triggering thresholding S, if so, perform step 305; Otherwise, continue to measure and continue to judge.
Wherein, measurement triggering thresholding S comprises: with frequency thresholding S intrasearch, alien frequencies thresholding S intersearchwith different system thresholding S searchratm.The S that UE measures xneed and S intrasearch, S intersearchand S searchratmcompare respectively, according to comparative result, as long as S xbe less than or equal to wherein any one, namely forward step 305 to.
Step 305, UE performs and measures the received signal strength of the neighbor cell in neighbor cell list.
The measurement triggering thresholding S mentioning setting above comprises: S intrasearch, S intersearchand S searchratm, the corresponding nearby region measurement triggered is that homogeneous-frequency adjacent-domain measurement, alien frequencies nearby region measurement and different system adjacent cell are measured respectively.Thus UE specifically comprises following situation to the measurement of neighbor cell:
If S x≤ S intrasearch, then UE startup is measured the received signal strength of co-frequency cell adjacent in list;
If S x≤ S intersearch, then UE startup is measured the received signal strength of alien-frequency district adjacent in list;
If S x≤ S searchratm, then UE startup is measured the received signal strength of adjacent different system cell in list.
In actual applications, select co-frequency cell during UE cell reselection, select alien-frequency district and the priority of selecting different system cell to carry out gravity treatment to reduce successively, therefore, S intrasearch, S intersearchand S searchratmvalue reduce successively.
Step 306, UE, according to the measurement result measured the received signal strength of neighbor cell, judges whether to exist the neighbor cell meeting resident condition, if so, then performs step 307; Otherwise, continue neighbor cell measurement and continue to judge.
Certain neighbor cell so-called meets resident condition, refers to:
First, the signal strength signal intensity of this neighbor cell is greater than certain value, such as: Qrxlevmeas > Qrxlevmin, wherein, Qrxlevmeas represents the received signal level value of this neighbor cell that UE measures, and Qrxlevmin represents that UE wants resident to the minimum levels value needed for a community.
The second, except meeting above-mentioned signal strength conditions, this neighbor cell must be also operator allow access community.
Step 307, UE calculates all grade points meeting the neighbor cell of resident condition, and is greater than the neighbor cell of current service cell grade point from grade point and chooses the community of the highest neighbor cell of grade point as the most applicable gravity treatment, starts timer T simultaneously reselectcarry out timing.
The method that UE calculates current service cell grade point is: R s=Qmeas s+ Q hyst+ Q offmbms,
Wherein, R srepresent the grade point of UE current service cell, Qmeas srepresent the received signal strength measuring the UE current service cell obtained, such as: can be Primary Common Control Physical Channel (P-CCPCH, Primary Common Control Physical Channel) on received signal code power (RSCP, Received Signal Code Power) value; Q offmbmsrepresent side-play amount during UE use multimedia broadcasting frequency band, Q offmbmsalso be the parameter of the cell reselection being handed down to UE in advance by RNC in SIB message, repeat no more herein.
The method that UE calculates neighbor cell grade point is: R n=Qmeas n-Q offsets+ Q offmbms
Wherein, R nrepresent the grade point of neighbor cell, Qmeas nrepresent the level value of the received signal strength measuring the neighbor cell obtained, the RSCP value namely on P-CCPCH, Q offmbmsrepresent side-play amount during UE use multimedia broadcasting frequency band.
Can find out, when UE (its translational speed is very large) under rapid movement state, so or R sdiminish (because Q hystdiminish), or R nbecome large (because Q offsetsdiminish), the easier grade point higher than current service cell of grade point of such neighbor cell.
UE is by all priority R meeting the neighbor cell of resident condition nwith the priority R of UE current service cell scompare, from being greater than R sr nin choose maximum, by the R of maximum ncorresponding neighbor cell as the community of the most applicable gravity treatment, and starts timer T simultaneously reselectcarry out timing.
Can see from above-mentioned analysis, no matter by Q hyst, Q offsetswhich optimum configurations becomes relevant to the translational speed of UE, effect is all make UE (when the translational speed of UE increases) when high-speed motion, the easier grade point higher than current service cell of grade point of neighbor cell, therefore any one of two parameters is arranged to the function of the translational speed of UE, its effect is all of equal value.
Step 308, UE judges that the community chosen is at timer T reselectduration in whether can remain the community of the most applicable gravity treatment, if so, then perform step 309; Otherwise, return step 307, continue the community finding the most applicable gravity treatment.
Step 309, UE gravity treatment to the community of the most applicable gravity treatment, and is registered to network side by registration message; After RNC receives the registration message of UE, send the neighbor cell list after upgrading and relevant parameter to UE.
In embodiments of the invention two, network configuration is hierarchical network, and so-called hierarchical network as shown in Figure 4, refers in same region, to set up the macrocell and the more Microcell of number that overlay area varies in size.In line of high-speed railway wireless of reality is arranged net, hierarchical network is more common situation, and wherein macrocell forms the network (private network) of the UE of service-specific in train; Microcell is common network (public network), covers other UE, and the community of two class networks belongs to different levels.
For the UE be in the bullet train of private network covering, translational speed information according to UE realizes cell reselection except can improving the accuracy and efficiency of cell reselection, and the UE that can also obtain on maintenance train resides in the beneficial effect in private network community.
As shown in Figure 5, in hierarchical network, the translational speed of UE is utilized to realize the step of cell reselection as follows:
Step 501, UE is resident to current service cell, and the NodeB of this Serving cell measures the translational speed of UE and reports RNC.
In actual applications, NodeB often can collect the translational speed of the multiple UE concentrated on a train at short notice, and sends to RNC by concentrated for the measurement result of these UE.
Step 502, RNC arranges according to the translational speed of the UE reported the parameter that UE carries out needed for cell reselection, and arranges the neighbor cell list of UE, and the parameter of setting and list are sent to UE by NodeB.
Preferably, be similar to embodiment one, for NodeB concentrate report the translational speed of multiple UE in its coverage cell time, RNC can do the process of further statistical average after the translational speed receiving multiple UE, then carrys out parameters by the result of statistical average.
For floored community, RNC comprises according to the cell reselection parameters set by translational speed of UE: first timer time T 1, second timer time T reselect, in order to calculate the lag parameter Q of current service cell grade point hyst, in order to calculate the offset parameter Q of neighbor cell grade point offsets, and level between offset parameter TO n.According to actual needs, RNC only can choose wherein one or more parameter and arrange according to the translational speed of UE, and remaining parameter is still arranged by prior art.
T 1, T reselect, Q hyst, Q offsetsmethod to set up identical with embodiment one, the corresponding relation of the translational speed of they and UE is: T reselectbe arranged to the increase of the translational speed of UE and reduce, Q hystand Q offsetsbe arranged to the increase of the translational speed of UE and reduce.
In actual applications, T 1both can send to UE, also can not send to UE.T reselectwhen employing reduces the factor to arrange, also directly can not send to UE, but reducing Summing Factor T reselectfiducial value sends to UE, then allows UE oneself arrange, repeats no more herein.
Offset parameter TO between level nbe arranged to the increase of the translational speed of UE and reduce, the mode of linear function or piecewise function can be adopted to realize this set, such as: TO n=TEMP_OFFSET 0-v|f d|, wherein, TEMP_OFFSET 0represent TO nfiducial value, v > 0.In practical application, can to TO toward contact neffect add a temporal restriction, the timer of a Tn is such as set, so TO nexpression formula just become TO n=(TEMP_OFFSET 0-v|f d|) implication of W (Tn), W (Tn) makes TO nvalue is only effective within the Tn time, namely within the time of Tn, and W (Tn)=1, in the time more than Tn, W (Tn)=0.
In addition, for high-speed railway or highway hierarchical network architecture along the line, RNC is by the level priority (HCS_PRIO of the private network community of Along Railway 1) be arranged to low value, by the level priority (HCS_PRIO of public network cell 2) be arranged to high level, i.e. HCS_PRIO 2> HCS_PRIO 1; Level priority (HCS_PRIO) mentioned here is also the parameter set by RNC, gets an integer in 0 to 7 intervals, and 7 represent preferentially the highest, and 0 represents preferentially minimum.
RNC, while arranging above cell reselection parameters according to the translational speed of UE, is also provided with the parameter of other cell reselection and neighbor cell list (not being arrange according to the translational speed of UE).Afterwards, the parameter of setting and neighbor cell list are sent to NodeB by RNC, then are transmitted to UE by NodeB by the SIB message on the BCH channel of community.
Step 503, UE starts timer T 1, and at T 1timing time then starts the received signal strength S measuring current service cell x.
Step 504, judges S xwhether be less than or equal to measurement triggering thresholding S, if so, perform step 505, otherwise continue to measure and continue to judge.
Measurement triggering thresholding S comprises: with frequency thresholding S intrasearch, alien frequencies thresholding S intersearchwith different system thresholding S searchratm, three describes in the embodiment depicted in figure 3.For simplified characterization, with S in this embodiment intersearchfor example proceeds explanation; In the high-speed railway private network scene of reality, the frequency of private network and public network adjacent area is often made into alien frequencies.Accordingly, if S x≤ S intersearch, then step 505 is performed.
Step 505, at S x≤ S intersearchtime, UE startup is measured the received signal strength of alien-frequency district adjacent in list.
Step 506, UE, according to the measurement result measured the received signal strength of adjacent alien-frequency district, judges whether to exist the neighbor cell meeting resident condition, if existed, then performs step 507; Otherwise, continue neighbor cell measurement and continue to judge.
Step 507, UE calculates all grade points (H value) meeting the neighbor cell of resident condition, and therefrom find out the neighbor cell that all H values are greater than 0, if can not find the neighbor cell that H value is greater than 0, so go to step 506 (not pointing out in figure).The computational methods of H value are as follows:
UE calculates the H value of current service cell: H s=Qmeas s-Qhcs s,
UE calculates the H value of neighbor cell: H n=Qmeas n-Qhcs n-TO nln,
Wherein, subscript s represents current service cell, and subscript n represents neighbor cell; Qmeas represents by measuring the received signal strength obtained; Qhcs sand Qhcs nit is other parameter of configuration in system message (SIB); TO nit is different layers inter-stage offset parameter; Ln is level flag bit, namely when this neighbor cell and current service cell are not same levels, and Ln=1; When being same level, Ln=0.
If UE can find H value to be greater than the community of 0, so sort according to level priority (HCS_PRIO) in these communities by UE; Then find wherein:
1, in the community that the level priority than current service cell is lower, find out the highest community of level priority, form a set of cells.
2, when 1 condition can not meet, so in the community that the level priority with current service cell is equal or higher, the minimum community of level priority is found out.
As can be seen here, because the level priority of private network community along the line to be arranged to the level priority lower than public network cell by RNC before, and TO is coordinated nthe effect of Ln item, makes the UE of high-speed motion can be resident in private network accurately.Be analyzed as follows: when certain UE is under high-speed motion state, TO ndiminish, TO nthe declines of Ln, so no matter with the adjacent area of level priority, or with its H of adjacent area of level priority nbecome large, that is the H value of this adjacent area is more easily greater than 0, thus increases this adjacent area by the possibility of gravity treatment.Further, because the level priority of private network community is lower than the level priority of public network cell, so UE will prioritizing selection private network community.So the community no matter UE is originally resident is private network or public network cell, as long as its fast moving, so it will be resident in private network.
Due to the unreliability of wireless environment transmission, the level priority of service area or adjacent area may not be sent to UE place, and at this moment UE should be arranged to the level priority of adjacent area identical with service area acquiescently, i.e. HCS_PRIO 2=HCS_PRIO 1.The benefit of such default setting is: the frequency not reducing UE gravity treatment, that is, after the signal quality decline of current service cell, can not affect the normal cell reselection of UE because of the reason of level priority; Meanwhile, avoid UE as much as possible resident in various level community, the UE in so original private network can continue to reside in private network.
Step 508, after UE finds out these communities, forms a subset of cells, then calculates its grade point (R value) to each community in this subset.
UE calculates the grade point of current service cell: R s=Qmeas s+ Q hyst+ Q offmbms,
UE calculates the grade point of neighbor cell: R n=Qmeas n-Q offsets+ Q offmbms-TOn (1-Ln)
Herein, Qmeas, Q hyst, Q offsets, Ln implication consistent with description before.
UE carries out sorting by grade point after grade point (R value) calculates to the community in described subset above; Find out the community of the highest neighbor cell of grade point as the most applicable gravity treatment, start second timer T simultaneously reselectcarry out timing.
As can be seen here, when UE rapid movement, the R of neighbor cell nvalue becomes large, thus accelerates gravity treatment.
Step 509, UE judges that the community chosen is at timer T reselectduration in whether can remain the community of the most applicable gravity treatment, if so, then perform step 510; Otherwise, return step 507, continue the community finding the most applicable gravity treatment.
According to described in step 502, the T of setting reselectreduce with the increase of the translational speed of UE, therefore the translational speed of UE is larger, and most suitable cell just only needs to keep the shorter time and by gravity treatment.
Step 510, UE gravity treatment is to the community of the most applicable gravity treatment.
Above two embodiments are so that implementation of the present invention to be described with the cell reselection of line of high-speed railway community.But should be noted that, except line of high-speed railway, the present invention is also suitable for the cell reselection be under high motion scenes with other user terminal such as highway, magnetic suspension and realizes.
In addition, the residence reselecting of corresponding above-mentioned non-layered networks structure, the present invention also provides a kind of method in the rnc non-layered networks structure community being arranged to cell reselection parameters, comprising:
Step a, RNC receive the translational speed of the UE that NodeB reports.
At least one in following parameter is arranged to the translational speed existence function relation with UE according to the translational speed of the UE received by step b, RNC: T 1, T reselect, Q hystand Q offsets.
Preferably, RNC can arrange Q hystreduce with the increase of the translational speed of UE, Q is set offsetsreduce with the increase of the translational speed of many UE, T is set reselectreduce with the increase of the translational speed of UE.And the setting of above-mentioned parameter can be realized by linear function or piecewise function.
The residence reselecting of corresponding above-mentioned hierarchical network architecture, the present invention also provides a kind of community to hierarchical network architecture to arrange the method for cell reselection parameters, comprising:
Steps A, RNC receives the translational speed of the UE that NodeB reports.
Step B, RNC according to the translational speed of UE received by offset parameter TO between level nbe arranged to the translational speed existence function relation with UE, and TO is set nreduce with the increase of the translational speed of UE.
Certainly, RNC also can arrange above-mentioned T 1, T reselect, Q hyst, Q offsetsin the translational speed existence function relation of at least one and UE.High-speed railway or highway are adopted to the network of hierarchical network architecture cloth net mode along the line, RNC is by the HCS_PRIO of private network community along the line 1be arranged to low value, by the HCS_PRIO of public network cell 2be arranged to high level, i.e. HCS_PRIO 2> HCS_PRIO 1.
For realizing the method for above-mentioned cell reselection, present invention also offers a kind of system of cell reselection, as shown in Figure 7, this system comprises: NodeB 10, RNC 20 and UE 30.NodeB 10, for measuring the translational speed that obtains UE 30 in its coverage cell and reporting RNC 20.RNC 20, the translational speed for the UE 30 reported according to NodeB10 arranges the parameter that UE 30 carries out cell reselection, and the parameter of setting is sent to all UE 30 in community by NodeB 10.UE 30, for measuring community according to the parameter received, and performs cell reselection according to measurement result.
Wherein, RNC 20 comprises receiver module 21 and parameter setting module 22 further.Receiver module 21, for receiving the translational speed of the UE 30 that NodeB 10 reports.Parameter setting module 22, for the translational speed according to the UE 30 received, is arranged to the translational speed existence function relation with UE 30: first timer time T by least one in following cell reselection parameters 1, second timer time T reselect, in order to calculate the lag parameter Q of current service cell grade point hystwith the offset parameter Q in order to calculate neighbor cell grade point offsets.Q is set hystreduce with the increase of the translational speed of UE, and/or Q is set offsetsreduce with the increase of the translational speed of UE, and/or T is set reselectreduce with the increase of the translational speed of UE.
For the community of hierarchical network architecture, parameter setting module 22 is also for by offset parameter TO between level nbe arranged to the translational speed existence function relation with UE 30, and TO nbe arranged to the increase of the translational speed of UE 30 and reduce.
High-speed railway or highway are adopted to the network of hierarchical network architecture cloth net mode along the line, parameter setting module 22 is further used for, by the HCS_PRIO of private network community along the line 1be arranged to low value, by the HCS_PRIO of public network cell 2be arranged to high level, i.e. HCS_PRIO 2> HCS_PRIO 1.
In addition, when UE 30 does not receive the level priority of current service district and adjacent area, UE should be arranged to the level priority of adjacent area identical with service area acquiescently.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.

Claims (25)

1. a method for cell reselection, is characterized in that, the method comprises:
Base station NodeB measurement obtains the translational speed of user terminal UE in its coverage cell and reports radio network controller (RNC);
The translational speed of the UE that described RNC reports according to NodeB arranges the parameter that UE carries out cell reselection, and at least one in following cell reselection parameters is arranged to the translational speed existence function relation with UE by RNC: first timer time T 1, second timer time T reselect, in order to calculate the lag parameter Q of current service cell grade point hystwith the offset parameter Q in order to calculate neighbor cell grade point offsets;
The parameter of setting is sent to all UE in community by NodeB;
Described UE is at T 1timing then, to the received signal strength S of current service cell xmeasure, by described S xcompare with the measurement triggering thresholding S preset, and at S xduring≤S, according to the neighbor cell list that RNC sends, the received signal strength of the neighbor cell in described neighbor cell list is measured;
Or described UE is at T 1timing time to before, with the received signal strength S of longer time cycle to current service cell xmeasure; At T 1timing time then, with the received signal strength S of shorter time cycle to current service cell xmeasure; By described S xcompare with the measurement triggering thresholding S preset, and at S xduring≤S, according to the neighbor cell list that RNC sends, the received signal strength of the neighbor cell in described neighbor cell list is measured;
Wherein, described T 1be set to described RNC runs to Serving cell borderline region time according to the UE that the movement velocity of UE and the geographic area, community known estimate; Described T reselectwhether can finally by the timer time of gravity treatment in order to weigh the community of the most applicable gravity treatment be selected.
2. the method for cell reselection according to claim 1, it is characterized in that, described RNC arranges second timer time T reselectreduce with the increase of the translational speed of UE.
3. the method for cell reselection according to claim 2, is characterized in that, described RNC is by linear function, or piecewise function, or is multiplied by and reduces factor pair T reselectarrange.
4. the method for cell reselection according to claim 1, it is characterized in that, the method comprises further: described RNC arranges Q hystreduce with the increase of the translational speed of UE, Q is set offsetsreduce with the increase of the translational speed of UE.
5. the method for cell reselection according to claim 4, is characterized in that, described RNC by linear function or piecewise function to Q hystand Q offsetsin at least one arrange.
6. the method for cell reselection according to claim 1, it is characterized in that, for the community of hierarchical network architecture, described RNC is by offset parameter TO between level nbe arranged to the translational speed existence function relation with UE, and, TO is set nreduce with the increase of the translational speed of UE.
7. the method for cell reselection according to claim 6, is characterized in that, described RNC is by linear function, or piecewise function, or is multiplied by and reduces factor pair TO narrange.
8. the method for cell reselection according to claim 1 or 6, it is characterized in that, high-speed railway or highway are adopted to the community of hierarchical network architecture cloth net mode along the line, described RNC is by the level priority HCS_PRIO of private network community along the line 1be arranged to low value, by the level priority HCS_PRIO of public network cell 2be arranged to high level, i.e. HCS_PRIO 2>HCS_PRIO 1.
9. the method for cell reselection according to claim 1, it is characterized in that, the method comprises further:
The T that described RNC will be arranged 1send to UE, described UE is according to the T received 1perform the measurement to community;
Or, the T that described RNC will not be arranged 1send to UE, described RNC is according to T 1carry out timing, and trigger the measurement of described UE execution to community.
10. the method for cell reselection according to claim 1, it is characterized in that, described RNC arranges according to the translational speed of UE the parameter that UE carries out needed for cell reselection, comprise further: when described RNC is after the translational speed receiving multiple UE that NodeB reports, get the assembly average of the multiple translational speeds reported, and the parameter that UE carries out needed for cell reselection is set according to described assembly average.
The system of 11. 1 kinds of cell reselections, is characterized in that, this system comprises: NodeB, RNC and UE, wherein,
Described NodeB, for measuring the translational speed that obtains UE in its coverage cell and reporting described RNC;
Described RNC, the translational speed for the UE reported according to NodeB arranges the parameter that UE carries out cell reselection, and at least one in following cell reselection parameters is arranged to the translational speed existence function relation with UE by RNC: first timer time T 1, second timer time T reselect, in order to calculate the lag parameter Q of current service cell grade point hystwith the offset parameter Q in order to calculate neighbor cell grade point offsets; And the parameter of setting is sent to all UE in community by NodeB;
Wherein, described first timer time T 1be set to described RNC runs to Serving cell borderline region time according to the UE that the movement velocity of UE and the geographic area, community known estimate; Described T reselectwhether can finally by the timer time of gravity treatment in order to weigh the community of the most applicable gravity treatment be selected;
Described UE, at T 1timing then, to the received signal strength S of current service cell xmeasure, by described S xcompare with the measurement triggering thresholding S preset, and at S xduring≤S, according to the neighbor cell list that RNC sends, the received signal strength of the neighbor cell in described neighbor cell list is measured;
Or described UE is at T 1timing time to before, with the received signal strength S of longer time cycle to current service cell xmeasure; At T 1timing time then, with the received signal strength S of shorter time cycle to current service cell xmeasure; By described S xcompare with the measurement triggering thresholding S preset, and at S xduring≤S, according to the neighbor cell list that RNC sends, the received signal strength of the neighbor cell in described neighbor cell list is measured.
12. according to the system of cell reselection described in claim 11, and it is characterized in that, described RNC is further used for, by offset parameter TO between level nbe arranged to the translational speed existence function relation with UE, and TO nbe arranged to the increase of the translational speed of UE and reduce.
13. according to the system of cell reselection described in claim 11, and it is characterized in that, high-speed railway or highway are adopted to the network of hierarchical network architecture cloth net mode along the line, described RNC is further used for, by the HCS_PRIO of private network community along the line 1be arranged to low value, by the HCS_PRIO of public network cell 2be arranged to high level, i.e. HCS_PRIO 2>HCS_PRIO 1.
14. according to the system of cell reselection described in claim 11, it is characterized in that, described UE is further used for, when not receiving the level priority of the level priority HCS_PRIO of current service cell or adjacent area, described UE acquiescence the level priority of adjacent area is arranged to identical with service area.
15. 1 kinds of methods that cell reselection parameters is set, it is characterized in that, the method comprises:
RNC receives the translational speed of the UE that NodeB reports;
At least one in following parameter is arranged to the translational speed existence function relation with UE according to the translational speed of the UE received by described RNC: first timer time T 1, second timer time T reselect, in order to calculate the lag parameter Q of current service cell grade point hyst, in order to calculate the offset parameter Q of neighbor cell grade point offsets;
Wherein, described first timer time T 1be set to described RNC runs to Serving cell borderline region time according to the UE that the movement velocity of UE and the geographic area, community known estimate; Described T reselect, Q hyst, and Q offsetsbe arranged to the increase of the translational speed of UE and reduce; Described T reselectwhether can finally by the timer time of gravity treatment in order to weigh the community of the most applicable gravity treatment be selected.
16., according to the method arranging cell reselection parameters described in claim 15, is characterized in that, the method comprises further: described RNC arranges Q hystreduce with the increase of the translational speed of UE.
17., according to the method arranging cell reselection parameters described in claim 15, is characterized in that, the method comprises further: described RNC arranges Q offsetsreduce with the increase of the translational speed of UE.
18., according to the method arranging cell reselection parameters described in claim 15, is characterized in that, the method comprises further: described RNC arranges T reselectreduce with the increase of the translational speed of UE.
19., according to the method arranging cell reselection parameters described in claim 15, is characterized in that, described RNC by linear function or piecewise function to T 1, T reselect, Q hyst, Q offsetsin at least one arrange.
20., according to the method arranging cell reselection parameters described in claim 19, is characterized in that, for hierarchical network architecture network, the method comprises further: described RNC according to the translational speed of UE received by offset parameter TO between level nbe arranged to the translational speed existence function relation with UE, and TO is set nreduce with the increase of the translational speed of UE.
21. methods that cell reselection parameters is set according to claim 19 or 20, it is characterized in that, high-speed railway or highway are adopted to the network of hierarchical network architecture cloth net mode along the line, the method comprises further: described RNC is by the HCS_PRIO of private network community along the line 1be arranged to low value, by the HCS_PRIO of public network cell 2be arranged to high level, i.e. HCS_PRIO 2>HCS_PRIO 1.
22. 1 kinds of RNC, is characterized in that, comprising:
Receiver module, for receiving the translational speed of the UE that NodeB reports;
Parameter setting module, for being arranged to the translational speed existence function relation with UE according to the translational speed of the UE received by least one in following parameter: first timer time T 1, second timer time T reselect, in order to calculate the lag parameter Q of current service cell grade point hyst, in order to calculate the offset parameter Q of neighbor cell grade point offsets;
Wherein, described first timer time T 1be set to described RNC runs to Serving cell borderline region time according to the UE that the movement velocity of UE and the geographic area, community known estimate; Described T reselect, Q hyst, and Q offsetsbe arranged to the increase of the translational speed of UE and reduce; Described T reselectwhether can finally by the timer time of gravity treatment in order to weigh the community of the most applicable gravity treatment be selected.
23., according to RNC described in claim 22, is characterized in that, described parameter setting module is further used for, and arranges Q hystreduce with the increase of the translational speed of UE, and/or Q is set offsetsreduce with the increase of the translational speed of UE, and/or T is set reselectreduce with the increase of the translational speed of UE.
24. according to claim 22 or 23 RNC, it is characterized in that, described parameter setting module is further used for, according to the translational speed of UE received by offset parameter TO between level nbe arranged to the translational speed existence function relation with UE, and TO is set nreduce with the increase of the translational speed of UE.
25., according to RNC described in claim 24, is characterized in that, high-speed railway or highway are adopted to the network of hierarchical network architecture cloth net mode along the line, described parameter setting module is further used for, by the HCS_PRIO of private network community along the line 1be arranged to low value, by the HCS_PRIO of public network cell 2be arranged to high level, i.e. HCS_PRIO 2>HCS_PRIO 1.
CN200910162738.7A 2009-08-12 2009-08-12 Method and system for cell reselection Active CN101998555B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910162738.7A CN101998555B (en) 2009-08-12 2009-08-12 Method and system for cell reselection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910162738.7A CN101998555B (en) 2009-08-12 2009-08-12 Method and system for cell reselection

Publications (2)

Publication Number Publication Date
CN101998555A CN101998555A (en) 2011-03-30
CN101998555B true CN101998555B (en) 2015-05-06

Family

ID=43787878

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200910162738.7A Active CN101998555B (en) 2009-08-12 2009-08-12 Method and system for cell reselection

Country Status (1)

Country Link
CN (1) CN101998555B (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102761923B (en) * 2011-04-29 2015-10-07 中国移动通信集团公司 A kind of cell switch determining method and equipment
CN102938911B (en) * 2011-08-15 2018-01-19 中兴通讯股份有限公司 Mobility parameters method of adjustment and device in a kind of heterogeneous network
CN102938917B (en) * 2011-08-15 2015-06-03 鼎桥通信技术有限公司 Non high-speed rail user switching method and radio network controller (RNC)
US9137718B2 (en) * 2012-01-12 2015-09-15 Qualcomm Incorporated Cell reselection based on multimedia broadcast multicast service (MBMS) metrics
CN102572990B (en) * 2012-02-28 2016-08-03 华为终端有限公司 The method of multimode switching and multimode terminal
WO2013170457A1 (en) * 2012-05-16 2013-11-21 富士通株式会社 Heterogeneous network mobility enhancing method, device and system
CN102752826B (en) * 2012-07-03 2014-12-10 华为技术有限公司 Cell reselection method and device
CN103634859A (en) * 2012-08-23 2014-03-12 中兴通讯股份有限公司 Cell reselection method and device
WO2014034090A1 (en) * 2012-08-30 2014-03-06 日本電気株式会社 Mobility control method and device, in mobile communications network
WO2014101184A1 (en) * 2012-12-31 2014-07-03 富士通株式会社 Cell reselection method, base station, terminal, and system
CN104080127B (en) * 2013-03-26 2018-06-26 中国移动通信集团江苏有限公司 A kind of method and device for orienting switching
CN104396308A (en) * 2013-04-12 2015-03-04 华为技术有限公司 Cell measurement method, user equipment and wireless communication node
CN104272804B (en) * 2013-05-03 2017-12-22 华为技术有限公司 Measuring method, measurement control method and equipment
CN105493551A (en) * 2013-05-17 2016-04-13 华为技术有限公司 Method and terminal for measuring cells
CN104684018B (en) * 2013-11-29 2018-02-23 中国移动通信集团公司 Cell measuring method and device, cell measurement results report method and device
TWI531268B (en) * 2013-12-04 2016-04-21 宏碁股份有限公司 Method of managing e-utra function of user equipment and related wireless communication system
CN103889010B (en) * 2014-03-25 2017-09-26 京信通信技术(广州)有限公司 A kind of adjustment method of cell reselection parameter and equipment
CN105828402B (en) * 2015-01-06 2019-10-29 中国移动通信集团江苏有限公司 A kind of blind reorientation method and core net, base station
CN106714243B (en) * 2015-07-13 2019-08-09 展讯通信（上海）有限公司 Mobile terminal cell reselection triggers duration adjusting and device
US9924426B2 (en) * 2016-06-06 2018-03-20 Futurewei Technologies, Inc. Apparatus, computer program, and method for criteria-based conditional cell reselection
CN108289316B (en) * 2017-01-10 2020-10-16 中国移动通信有限公司研究院 Cell selection or reselection method, and cell switching parameter setting method and device
WO2018191974A1 (en) 2017-04-21 2018-10-25 深圳前海达闼云端智能科技有限公司 Cell reselection method and device
CN109219091B (en) * 2017-06-29 2021-05-25 中国电信股份有限公司 VoLTE cell switching method, device and base station
CN107295558B (en) * 2017-08-10 2019-09-20 Oppo广东移动通信有限公司 Cell measuring method, device and storage medium
WO2019113755A1 (en) * 2017-12-11 2019-06-20 北京小米移动软件有限公司 Cell reselection method, device, and storage medium
CN110035464B (en) * 2018-01-11 2021-01-05 华为技术有限公司 Switching method, terminal equipment and network equipment
CN108401272A (en) * 2018-04-18 2018-08-14 句容市宝启电子科技有限公司 A kind of residence reselecting of TD-SCDMA terminals
CN110650508B (en) * 2018-06-11 2021-10-29 中国移动通信有限公司研究院 Method for controlling reselection of drive test terminal cell, drive test method, device and drive test instrument
CN110839262B (en) * 2018-08-15 2021-11-19 中国移动通信有限公司研究院 Cell reselection method, network side equipment and terminal
CN111615161B (en) * 2019-06-27 2022-05-27 维沃移动通信有限公司 Mobility state evaluation method and terminal equipment
CN113365316B (en) * 2020-03-05 2022-08-12 中国移动通信集团吉林有限公司 Method and device for selecting inter-system neighbor cells, computer equipment and storage medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1120985A1 (en) * 2000-01-24 2001-08-01 Lucent Technologies Inc. Cellular radio telecommunications user equipment
CN1863385A (en) * 2005-10-26 2006-11-15 华为技术有限公司 Method and system for implementing cellular communication system switching
CN101316400A (en) * 2007-05-29 2008-12-03 大唐移动通信设备有限公司 Method, system and device for community re-selection and switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1120985A1 (en) * 2000-01-24 2001-08-01 Lucent Technologies Inc. Cellular radio telecommunications user equipment
CN1863385A (en) * 2005-10-26 2006-11-15 华为技术有限公司 Method and system for implementing cellular communication system switching
CN101316400A (en) * 2007-05-29 2008-12-03 大唐移动通信设备有限公司 Method, system and device for community re-selection and switch

Also Published As

Publication number Publication date
CN101998555A (en) 2011-03-30

Similar Documents

Publication Publication Date Title
CN101998555B (en) Method and system for cell reselection
US20180227824A1 (en) Method of Heterogeneous Network Mobility
US10848983B2 (en) Communications device and method
CN104170467B (en) Motion management method and equipment in high-speed railway
EP2880913B1 (en) Method and arrangement for mobility procedures
JP6042416B2 (en) Methods and nodes that support cell changes
RU2452094C2 (en) Method and device in telecommunications system
CN101873566B (en) Mobility management method and system of user terminal along given line
US8446880B2 (en) Method of performing cell re-selection in a wireless communication system
US20120082051A1 (en) Method and apparatus for controlling measurement information report in 3gpp system
JP2014523719A (en) A method for small cell discovery in heterogeneous networks
WO2013104333A1 (en) Mobile terminal moving speed obtaining method, base station and terminal
CN101951648B (en) Cell reselection method and system
CN105744481B (en) A kind of motion management method of different systems
WO2011011958A1 (en) Method and system for reporting measurement result and handing over cells
CN104168614A (en) High-speed railway LTE system cell reselection system and method based on geographical location information
KR20090099474A (en) A cell selection method for generating a layer structure using a cell quality
CN109996256B (en) User migration analysis method and device, computing equipment and storage medium
Ray et al. Self-tracking mobile station controls its fast handover in mobile WiMAX
EP2916591B1 (en) Selecting a cell of a wireless cellular communication network
CN102137422B (en) A kind of alien frequencies adjacent cell measurement method and device
CN115002845B (en) Method and device for cell switching
JP5534617B2 (en) Method and apparatus for operating mobile network in mobile communication system
EP2963974A2 (en) Method for optimising mobility management in a cellular network and in a mobile terminal of a cellular network
Sas et al. A SON function for steering users in multi-layer LTE networks based on their mobility behaviour

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20201130

Address after: Xintang Zhang Village Liuhe Town Taicang city Suzhou City, Jiangsu province 215400

Patentee after: SUZHOU KESAI PRECISION MACHINERY Co.,Ltd.

Address before: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China

Patentee before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd.

Effective date of registration: 20201130

Address after: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China

Patentee after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd.

Address before: 518057 Nanshan District Guangdong high tech Industrial Park, South Road, science and technology, ZTE building, Ministry of Justice

Patentee before: ZTE Corp.

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20220107

Address after: 215431 No. 1, Ziwei Road, Liuhe Town, Suzhou City, Jiangsu Province

Patentee after: SUZHOU DACHENG YOUFANG DATA TECHNOLOGY Co.,Ltd.

Address before: 215400 Liuhe Town Xintang Zhangqiao village Taicang City Suzhou City Jiangsu Province

Patentee before: SUZHOU KESAI PRECISION MACHINERY CO.,LTD.

TR01 Transfer of patent right