CN1984477A - Method and device for re-selecting based on residence access control - Google Patents
Method and device for re-selecting based on residence access control Download PDFInfo
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- CN1984477A CN1984477A CNA2006100796384A CN200610079638A CN1984477A CN 1984477 A CN1984477 A CN 1984477A CN A2006100796384 A CNA2006100796384 A CN A2006100796384A CN 200610079638 A CN200610079638 A CN 200610079638A CN 1984477 A CN1984477 A CN 1984477A
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Abstract
In the cell reselection apparatus: when central controller receives a notice, from cell access detecting unit, for prohibiting the terminal to initiate an access to the current resident cell, it starts up the cell measurement algorithm unit; according to the instruction from central controller, the cell measurement algorithm unit measures neighboring cells and selects cells whose measurement values satisfy a preset rule; the central controller sends the notice of finding cells satisfying the preset rule to the cell access detection unit; the cell access detection unit detects the found cells, and selects one of cells allowing terminal to access as resident destination cell.
Description
Technical field
The present invention relates to mobile communication system, relate in particular to a kind of residence reselecting and device in the mobile communication system based on the sub-district access control.
Background technology
In the WCDMA system, for idle (idle) pattern and CELL FACH, the CELL_PCH of connection mode, the user terminal of URA_PCH state, its mobile management realizes by the cell selecting gravity treatment, select suitable cell to carry out resident decision-making power, but network terminal can be configured cell selecting and the gravity treatment of controlling UE indirectly by the relevant parameter in the broadcast at user side.
The cell selecting reuse adoption process is made up of selection and gravity treatment two parts, respectively by S criterion and the judgement of R criterion.
User terminal carries out the S criterion (FDD sub-district) of cell selecting:
Srxlev＞0 AND Squal＞0
Wherein,
Squal＝Qqualmeas-Qqualmin
Srxlev＝Qrxlevmeas-Qrxlevmin-Pcompensation
Pcompensation＝max(UE_TXPWR_MAX_RACH-P_MAX，0)(dB)
Parameter declaration among the above-mentioned decision rule S such as following table 1:
Table 1
| Squal | Cell selecting quality (dB).This is a calculated value, is used for assessment decisions. |
| Srxlev | Cell selecting receives grade (dB).This is a calculated value, is used for assessment decisions. |
| Q Qualmeas | The district pilots quality of measuring (dB).This is the measured value of Common Pilot Channel signal to noise ratio (CPICH Ec/No). |
| Q Rxlevmeas | The sub-district of measuring receives grade.Use Common Pilot Channel received signal code power (CPICH RSCP) for the FDD sub-district, this is a measured value. |
| Qqualmin | The minimum cell quality (dB) that needs, this is for can be provided with parameter. |
| Qrxlevmin | The minimum cell that needs receives grade (dBm), and this is for can be provided with parameter. |
| Pcompensation | Power back-off, this is a calculated value, and is used to calculate Srxlev. |
| UE_TXPWR_MAX_ RACH | UE inserts the available maximum transmission power (dBm) of sub-district RACH channel, belongs to the system message configuration. |
| P_MAX | The maximum RF transmitting power (dBm) of UE belongs to the UE ability. |
UE periodically measures the quality of current service cell, and its measured value is represented with Qmean.Can from two kinds of measuring amount CPICH RSCP and CPICH Ec/No, select a kind of Serving cell quality of weighing for use.Which kind of measuring amount UE uses controlled by system message by network terminal as reselection criteria.
In not having the network of layered cell structure, when co-frequency cell gravity treatment thresholding Sintrasearch that measured value Qmean disposes in less than system message, UE starts the co-frequency cell reuse adoption process, and selects an optimum co-frequency cell resident according to the R criterion of introducing below.As Qmean during less than alien-frequency district gravity treatment thresholding Sintersearch, UE starts the alien-frequency district reuse adoption process, promptly only measure the sub-district different with the current service cell carrier frequency, and calculate the R value of each sub-district and sort according to the R criterion, the R value corresponding district of maximum is the optimal quality sub-district.
If the current persistent district of UE is not an optimum subdistrict, it is resident that then UE selects the same frequency or the alien-frequency district of this optimal quality.
User terminal carries out the R criterion of cell selecting gravity treatment:
| R s＝Q meas，s+Qhyst s R n＝Q meas，n-Qoffset s，n-TO n*(1-L n) |
Wherein:
Q
Meas, sServing cell quality for the UE measurement.
Q
Meas, nAdjacent cell quality for the UE measurement.
Qoffset
S, nBe the biasing between Serving cell and the adjacent cell.This value is big more, selects the probability of Serving cell big more; This value is more little, selects the probability of adjacent cell big more.
Qhyst
sHysteresis for Serving cell.
TQ
nAnd L
nBe used for floored community, get 0 for these two of non-layered sub-districts.
In existing standard, can a kind of control method that initiate to insert at current persistent district to user terminal be provided, be called access control (access control).
Access control message also is broadcast to user terminal in system message, all user terminals are divided into 0～15 totally 16 access grades, and access control can be carried out respectively at the user terminal of different access grades.An access grade banned list is provided in the system message, if certain access grade is labeled as has forbidden, then all just can not initiate the professional request of setting up from this sub-district with this access grade corresponding user terminal, that is to say and can not communicate from this sub-district.
The user terminal of any grade can be selected and reside in system and carry out in the sub-district of access control, but initiate professionally when setting up request from idle condition when user terminal, user terminal needs at first to confirm whether current area forbids for the user terminal of own corresponding grade.
Access control mechanism is used for carrying out the load control of up direction usually by network side, user terminal by the restricted part access grade initiates to insert request in current area, the signaling that can reduce on the one hand on the uplink common channel is transmitted, and reaches to alleviate the uplink common channel load and alleviate the purpose of common signal channel to other channel disturbance; On the other hand, also alleviated base station equipment up access signal has been carried out the burden that demodulation, detection etc. are handled, make the resource of base station equipment can be used for to setting up professional subscriber terminal service, thereby set up the service quality of the user terminal of communication in the raising system.
Prior art is load control is carried out in realization to current service cell when, for the part idle traffic, having deprived certain customers' terminal makes a call and sets up the right of communication in current area, make these be forbidden that by system the user terminal of initiating to insert can not carry out corresponding business, and then can not obtain normal communication service.
Summary of the invention
The invention provides a kind of residence reselecting and device based on the sub-district access control, make part by current persistent district forbid the user terminal of initiating to insert can have an opportunity from frequently or the alien frequencies neighbor cell initiate to insert.
On the one hand, propose a kind of residence reselecting, may further comprise the steps based on the sub-district access control:
A, terminal detect current resident sub-district and forbid initiating to insert;
B, measure adjacent cells and judge whether measured value satisfies predetermined criterion;
C, from the sub-district of satisfying predetermined criterion, search a sub-district of allow to initiate inserting as the resident Target cell of described terminal.
Above-mentioned steps C further comprises: if search the resident Target cell failure of described terminal, then return steps A.
Above-mentioned steps A further may further comprise the steps:
A1, described starting terminal timer are treated that timer expires to initiate to detect next time;
A2, detect current resident sub-district and forbid initiate inserting.
In the said method, the time limit of timer is to be provided with according to the system message of receiving or the default configuration of described terminal inner.
In the said method, forbidding described in the steps A initiates to insert and initiate to insert with the permission described in the step C is definite by analyzing system message that described terminal receives.
Measurement judgement described in the above-mentioned steps B comprises in the following mode at least a:
Measure and the current resident identical adjacent cells of cell frequency, and judge whether measured value satisfies predetermined criterion;
Measure and the current resident different adjacent cells of cell frequency, and judge whether measured value satisfies predetermined criterion.
In the said method, if adopt described two kinds to measure judgment mode simultaneously, then described terminal is preferentially searched from the alien frequencies adjacent cells that satisfies predetermined criterion and is allowed to initiate the sub-district of access as resident Target cell.
In the said method, predetermined criterion is a sub-district gravity treatment R criterion.
On the other hand, a kind of sub-district gravity concentration apparatus based on the sub-district access control is proposed.Sub-district access detecting unit, cell measurement arithmetic element and target cell information unit that this device comprises central controller and is attached thereto, wherein:
Detecting unit is inserted in the sub-district, is used for forbidding or allowing described terminal to initiate access according to the command detection sub-district of central controller, and notifies central controller with testing result;
The cell measurement arithmetic element is used for measuring adjacent cells according to the instruction of central controller and therefrom searches the sub-district that measured value satisfies predetermined criterion, and notifies central controller with lookup result;
The target cell information unit is used for that detecting unit is inserted in the sub-district and notes as Target cell a detected sub-district that allows described terminal to initiate and insert from the sub-district of satisfying predetermined criterion;
Central controller, be used for receiving that the sub-district starts the cell measurement arithmetic element when inserting the notice that current persistent district that detecting unit sends forbids initiating to insert, and the cell notification that satisfies predetermined criterion that the cell measurement arithmetic element finds is inserted detecting unit to the sub-district.
Said apparatus also comprises timer, pick up counting during the enabled instruction that is used to receive central controller, and when timing expires the notice central controller; Above-mentioned central controller, be further used for receiving that the sub-district starts timer when inserting the notice that the current persistent district of detecting unit forbids initiating to insert, treat to order when timer expires the sub-district to insert detecting unit current persistent district is detected next time, detect current persistent district and forbid starting when initiation inserts the cell measurement arithmetic element.
Above-mentioned central controller is further used for restarting timer when searching the Target cell failure.
Said apparatus also comprises the message sink unit, is used for receiving system message and passes to central controller; Detecting unit is inserted in above-mentioned sub-district, is further used for analyzing transmitting the system message of coming by the instruction of central controller and seeing that wherein whether comprising sub-district that expression detects forbids that terminal initiates the information that inserts.
Above-mentioned cell measurement arithmetic element further comprises in the following type block at least a:
Co-frequency cell is measured computing module, is used to measure and the current resident identical adjacent cells of cell frequency, therefrom searches the sub-district that measured value satisfies predetermined criterion;
Alien-frequency district is measured computing module, is used to measure and the current resident different adjacent cells of cell frequency, therefrom searches the sub-district that measured value satisfies predetermined criterion.
In the said apparatus, the time limit of timer is to be provided with according to the system message of receiving or the default configuration of described terminal inner.
In the said apparatus, predetermined criterion is a sub-district gravity treatment R criterion.
Advantage and characteristics that the present invention is main are as follows:
1. the cell re-selection mechanism that provides of the application of the invention, the user terminal that can effectively avoid the part access grade be because system forbids initiating to insert and can not obtain normal communication service in current area, thereby improved the service quality of user terminal;
2. simultaneously, user terminal initiation active sub-district gravity treatment makes user terminal can make full use of the resource of neighbor cell.
Description of drawings
Fig. 1 is a flow chart of the residence reselecting based on access control of the present invention;
Fig. 2 is the composition structural representation with the first embodiment corresponding district gravity concentration apparatus of the method for the invention.
Embodiment
Below, first embodiment to residence reselecting of the present invention is described in conjunction with the flow process of Fig. 1.
In step 101, according to the scheme of prior art, user terminal is based on the R criterion of signal measurement, cell selecting S criterion and sub-district gravity treatment, and the sub-district of selecting to satisfy condition is carried out resident.
In step 102, user terminal to read system message, the access control information of acquisition sub-district.
In step 103, if current persistent district is forbidden initiating to insert to the user terminal of access grade under this user terminal, promptly the user terminal that belongs to same access grade with this user terminal all is under an embargo and makes a call, then execution in step 104, otherwise get back to step 101, proceed normal cell selecting and gravity treatment.
In step 104, start-up period timer T, and wait for that this timer expires.
The timing length of this cycle timer is provided with in system message by system, and gives user terminal by the system message broadcast announcement.When system did not broadcast this parameter, user terminal also can adopt inner default configuration that regularly length is set.
In step 105, when timer expires,, current persistent district initiates to insert if still forbidding the user terminal of the affiliated access grade of this user terminal, and then execution in step 106, carry out normal cell selecting gravity treatment otherwise get back to step 101.
In step 106, user terminal carries out active co-frequency cell gravity treatment.
The co-frequency cell initiatively process of gravity treatment is, user terminal carries out common frequency measurement to the adjacent cells that has a same frequency with current persistent district, and sub-district gravity treatment R criterion of the prior art by reference comes candidate cell is sorted.
Different with the sub-district reselection modes of prior art is that current service cell, that is to say to participate in ordering not as candidate cell owing to forbid user terminal to initiate to insert.
In step 107, user terminal reads the system message of respective cell successively and judges whether respective cell forbids that terminal inserts according to the sub-district ordering that obtains in step 106.If in the candidate cell that satisfies the cell selecting criterion, find a sub-district that allows terminal to initiate and insert, determine that then this sub-district is a Target cell, and stop judgement follow-up candidate cell.
In step 108, if user terminal finds new Target cell, it is resident then to select this Target cell to carry out.Otherwise, get back to step 104, whether initiate the initiatively judgement of sub-district gravity treatment after waiting timer expires again.
Below, with reference to the first embodiment corresponding district gravity concentration apparatus of Fig. 2 description with described method.Message sink unit, timer, sub-district access detecting unit, cell measurement arithmetic element and target cell information unit that this device comprises central controller and is attached thereto.
Wherein, the message sink unit is used for the receiving system broadcast and passes to central controller.Pick up counting during enabled instruction that cycle timer is used to receive central controller, and at timing notice central controller during to length regularly.The system broadcast message of coming is transmitted in the instruction that sub-district access detecting unit is used for analyzing by central controller, see and whether comprise the information that expression forbids that the initiation of active user's terminal inserts, thereby forbid the sub-district that judgement is detected or allow this user terminal to initiate to insert, and testing result is passed to central controller.The cell measurement arithmetic element is measured adjacent cells and is judged that whether the measured value of each adjacent cells satisfies sub-district gravity treatment R criterion, passes to central controller with the sign that satisfies the sub-district of sub-district gravity treatment R criterion during the instruction that is used to receive central controller.The target cell information unit is used for that detecting unit is inserted in the sub-district and notes as Target cell a detected sub-district that allows this user terminal to initiate and insert from the sub-district of satisfying sub-district gravity treatment R criterion.Central controller is used to control and manage each adjunct unit that is attached thereto.Main control and management function comprise: receive that the sub-district starts timer when inserting the notice that the current persistent district of detecting unit forbids that active user's terminal initiates to insert, treat to order when timer expires the sub-district to insert detecting unit detects current persistent district next time, still detect and start the cell measurement arithmetic element when current persistent district is forbidden initiating to insert, and the sign of the sub-district of satisfying sub-district gravity treatment R criterion that the cell measurement arithmetic element is found passes to the sub-district and inserts detecting unit, and restarts timer when searching the Target cell failure.
Further, the cell measurement arithmetic element comprises co-frequency cell measurement computing module, is used to measure and the current resident identical adjacent cells of cell frequency, therefrom searches the sub-district that measured value satisfies sub-district gravity treatment R criterion.
Depict different functions as different square frame though should be pointed out that Fig. 2, this function of never getting rid of plurality of function modules is wherein carried out by individual unit/module.
Second embodiment of the inventive method adopts another kind of mode on the step 106 of first embodiment: user terminal is initiated the active gravity treatment of alien-frequency district, and other steps are identical with first embodiment.
The mode of user terminal initiation alien-frequency district active gravity treatment and the mode of co-frequency cell active gravity treatment are similar, and different is for the alien-frequency district gravity treatment, not need to deduct current persistent district, because current persistent district and alien-frequency district do not belong to same frequency.
Device among the second embodiment described method corresponding district gravity concentration apparatus and first embodiment is similar, just co-frequency cell in the device of first embodiment is measured computing module and has been changed into alien-frequency district measurement computing module.Here, alien-frequency district is measured computing module and is used to measure and the current resident different adjacent cells of cell frequency, therefrom searches the sub-district that measured value satisfies sub-district gravity treatment R criterion.
In the 3rd embodiment of the inventive method, step 106 adopts another mode: system disposes by system message and controls the initiatively gravity treatment of sub-district which kind of mode user terminal carries out, if system has only disposed initiatively gravity treatment of co-frequency cell, then user terminal is only carried out initiatively gravity treatment of co-frequency cell, if system has disposed simultaneously with frequency and initiatively gravity treatment of alien-frequency district, then user terminal preferentially carries out initiatively gravity treatment of alien-frequency district, carries out initiatively gravity treatment of co-frequency cell then.
Therefore, the device among the 3rd embodiment described method corresponding district gravity concentration apparatus and first embodiment is similar, has just increased an alien-frequency district again and measure computing module in the cell measurement arithmetic element of first embodiment.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (15)
1, a kind of residence reselecting based on the sub-district access control may further comprise the steps:
A, terminal detect current resident sub-district and forbid initiating to insert;
B, measure adjacent cells and judge whether measured value satisfies predetermined criterion;
C, from the sub-district of satisfying predetermined criterion, search a sub-district of allow to initiate inserting as the resident Target cell of described terminal.
2, the method for claim 1 is characterized in that step C further comprises: if search the resident Target cell failure of described terminal, then return steps A.
3, method as claimed in claim 2 is characterized in that steps A further may further comprise the steps:
A1, described starting terminal timer are treated that timer expires to initiate to detect next time;
A2, detect current resident sub-district and forbid initiate inserting.
4, method as claimed in claim 3, the time limit that it is characterized in that described timer is to be provided with according to the system message of receiving or the default configuration of described terminal inner.
5, the method for claim 1 is characterized in that forbidding described in the steps A initiate to insert that to initiate to insert with the permission described in the step C be definite by analyzing system message that described terminal receives.
6, the method for claim 1 is characterized in that the measurement judgement described in the step B comprises in the following mode at least a:
Measure and the current resident identical adjacent cells of cell frequency, and judge whether measured value satisfies predetermined criterion;
Measure and the current resident different adjacent cells of cell frequency, and judge whether measured value satisfies predetermined criterion.
7, method as claimed in claim 6 is characterized in that if adopt described two kinds to measure judgment mode simultaneously, then described terminal is preferentially searched and allowed to initiate the sub-district of access as resident Target cell from the alien frequencies adjacent cells that satisfies predetermined criterion.
8,, it is characterized in that described predetermined criterion is a sub-district gravity treatment R criterion as any one described method in the claim 1 to 7.
9, a kind of sub-district gravity concentration apparatus based on the sub-district access control is characterized in that sub-district access detecting unit, cell measurement arithmetic element and target cell information unit that this device comprises central controller and is attached thereto, wherein:
Detecting unit is inserted in the sub-district, is used for forbidding or allowing described terminal to initiate access according to the command detection sub-district of central controller, and notifies central controller with testing result;
The cell measurement arithmetic element is used for measuring adjacent cells according to the instruction of central controller and therefrom searches the sub-district that measured value satisfies predetermined criterion, and notifies central controller with lookup result;
The target cell information unit is used for that detecting unit is inserted in the sub-district and notes as Target cell a detected sub-district that allows described terminal to initiate and insert from the sub-district of satisfying predetermined criterion;
Central controller, be used for receiving that the sub-district starts the cell measurement arithmetic element when inserting the notice that current persistent district that detecting unit sends forbids initiating to insert, and the cell notification that satisfies predetermined criterion that the cell measurement arithmetic element finds is inserted detecting unit to the sub-district.
10, device as claimed in claim 9 is characterized in that
Also comprise timer, pick up counting during the enabled instruction that is used to receive central controller, and when timing expires the notice central controller;
Described central controller, be further used for receiving that the sub-district starts timer when inserting the notice that the current persistent district of detecting unit forbids initiating to insert, treat to order when timer expires the sub-district to insert detecting unit current persistent district is detected next time, detect current persistent district and forbid starting when initiation inserts the cell measurement arithmetic element.
11, device as claimed in claim 10 is characterized in that
Described central controller is further used for restarting timer when searching the candidate cell failure that allows described terminal to initiate access.
12, as claim 9 or 10 described devices, it is characterized in that
Also comprise the message sink unit, be used for receiving system message and pass to central controller;
Detecting unit is inserted in described sub-district, is further used for analyzing transmitting the system message of coming by the instruction of central controller and seeing that wherein whether comprising sub-district that expression detects forbids that terminal initiates the information that inserts.
13,, it is characterized in that described cell measurement arithmetic element further comprises in the following type block at least a as claim 9 or 10 described devices:
Co-frequency cell is measured computing module, is used to measure and the current resident identical adjacent cells of cell frequency, therefrom searches the sub-district that measured value satisfies predetermined criterion;
Alien-frequency district is measured computing module, is used to measure and the current resident different adjacent cells of cell frequency, therefrom searches the sub-district that measured value satisfies predetermined criterion.
14, device as claimed in claim 10, the time limit that it is characterized in that described timer is to be provided with according to the system message of receiving or the default configuration of described terminal inner.
15,, it is characterized in that described predetermined criterion is a sub-district gravity treatment R criterion as claim 9 or 10 described devices.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006100796384A CN1984477A (en) | 2006-04-30 | 2006-04-30 | Method and device for re-selecting based on residence access control |
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| CNA2006100796384A CN1984477A (en) | 2006-04-30 | 2006-04-30 | Method and device for re-selecting based on residence access control |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008000184A1 (en) * | 2006-06-21 | 2008-01-03 | Huawei Technologies Co., Ltd. | A method and system for mobility control |
| WO2011047569A1 (en) * | 2009-10-20 | 2011-04-28 | 中兴通讯股份有限公司 | Method and device for emergency call user switching |
| WO2011057508A1 (en) * | 2009-11-13 | 2011-05-19 | 中兴通讯股份有限公司 | Method and terminal for selecting a base station |
| CN102761896A (en) * | 2011-04-27 | 2012-10-31 | 联芯科技有限公司 | Method and device for characterizing communication quality of mobile communication terminal |
| CN102892173A (en) * | 2011-07-22 | 2013-01-23 | 中兴通讯股份有限公司 | Method for processing service barred for initiation or released and user terminal |
| WO2013113230A1 (en) * | 2012-02-02 | 2013-08-08 | 华为技术有限公司 | Method and terminal for data transmission |
| WO2014000173A1 (en) * | 2012-06-27 | 2014-01-03 | 华为技术有限公司 | Method for camping in cell, terminal, and base station |
| WO2022151454A1 (en) * | 2021-01-17 | 2022-07-21 | 华为技术有限公司 | Method for cell selection or reselection, terminal device, and network device |
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- 2006-04-30 CN CNA2006100796384A patent/CN1984477A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008000184A1 (en) * | 2006-06-21 | 2008-01-03 | Huawei Technologies Co., Ltd. | A method and system for mobility control |
| WO2011047569A1 (en) * | 2009-10-20 | 2011-04-28 | 中兴通讯股份有限公司 | Method and device for emergency call user switching |
| CN102045675A (en) * | 2009-10-20 | 2011-05-04 | 中兴通讯股份有限公司 | Method and device for switching emergency call user |
| WO2011057508A1 (en) * | 2009-11-13 | 2011-05-19 | 中兴通讯股份有限公司 | Method and terminal for selecting a base station |
| CN102761896A (en) * | 2011-04-27 | 2012-10-31 | 联芯科技有限公司 | Method and device for characterizing communication quality of mobile communication terminal |
| CN102761896B (en) * | 2011-04-27 | 2015-03-18 | 联芯科技有限公司 | Method and device for characterizing communication quality of mobile communication terminal |
| CN102892173A (en) * | 2011-07-22 | 2013-01-23 | 中兴通讯股份有限公司 | Method for processing service barred for initiation or released and user terminal |
| WO2013013545A1 (en) * | 2011-07-22 | 2013-01-31 | 中兴通讯股份有限公司 | Processing method after service being forbidden to initiate or being released and user terminal |
| CN102892173B (en) * | 2011-07-22 | 2018-01-05 | 中兴通讯股份有限公司 | A kind of business be prohibited to initiate or be released after processing method and user terminal |
| WO2013113230A1 (en) * | 2012-02-02 | 2013-08-08 | 华为技术有限公司 | Method and terminal for data transmission |
| WO2014000173A1 (en) * | 2012-06-27 | 2014-01-03 | 华为技术有限公司 | Method for camping in cell, terminal, and base station |
| WO2022151454A1 (en) * | 2021-01-17 | 2022-07-21 | 华为技术有限公司 | Method for cell selection or reselection, terminal device, and network device |
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Open date: 20070620 |