CN101128018B - Switching method and terminal in long evolved system - Google Patents
Switching method and terminal in long evolved system Download PDFInfo
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- CN101128018B CN101128018B CN2006101098040A CN200610109804A CN101128018B CN 101128018 B CN101128018 B CN 101128018B CN 2006101098040 A CN2006101098040 A CN 2006101098040A CN 200610109804 A CN200610109804 A CN 200610109804A CN 101128018 B CN101128018 B CN 101128018B
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Abstract
The utility model discloses a switching method in long-term evolution system, which comprises the following steps: a terminal receives a switch order sent by a source cell; if the terminal band width is small than that of the system, implementing switch operation according to the relationship between the frequency band to be switched to the target cell and the service frequency band of the source cell. The utility model also discloses a terminal, which comprises a receiving unit, a transmitting unit, a switch type informing unit, a switch mode confirming unit and a switch executing unit. The utility model has the advantages of effectively switching the terminal to the target cell and completing switch process under the condition that the system bandwidth is bigger than that of the terminal in the long-term evolution system.
Description
Technical field
The present invention relates to communication technical field, method, the terminal of switching in particularly a kind of long evolving system.
Background technology
In order to make 3GPP (The 3rd Generation Partnership Project; 3rd Generation Partnership Project) wireless access technology is on a good wicket in future mobile environment with keen competition; Just need to consider the Long Term Evolution (LTE, Long TermEvolution) of 3GPP wireless access technology.The target of Long Term Evolution is the framework that one of exploitation has the wireless access technology of high data rate, low-response time and the optimum characteristics such as access of dividing into groups.Therefore, the pith that need study of Long Term Evolution comprises: reduce the response time, improve user data rate, improve power system capacity and coverage etc.Wherein, in the handoff procedure of system, can relate to terminal and Target cell synchronously and problem such as parameter exchange, these problems will influence response time and the capacity of system etc.
Handoff procedure of the prior art is following:
After radio condition changed, the terminal was measured adjacent sub-district and measurement report is reported network side, and network side is made handover decisions according to measurement report, and switches preparation, sent switching command afterwards and gave the terminal, and indicating terminal switches to Target cell; After the terminal receives or sent last packet from the cell-of-origin, receive the switching command of network side transmitted, after the terminal was accomplished and carried out parameter exchange etc. and operate with the physical layer synchronization of Target cell, with Target cell, foundation was connected with Target cell.Switch complete after, the terminal send to switch is accomplished signaling and is given network.
In LTE, support the bandwidth varying technology, this just makes and has more complicated scene in the LTE system: the scene of system bandwidth greater than terminal bandwidth arranged, and system bandwidth equals scene and the system bandwidth of the terminal bandwidth scene less than terminal bandwidth.Wherein the system bandwidth scene that is less than or equal to terminal bandwidth can directly be used existing UTRA (Universal Terrestril Radio Access; The universal terrestrial radio access) scheme in the technology; But under the situation of system bandwidth greater than terminal bandwidth; The terminal only quarters on the band segment of cell-of-origin; Is doing when frequently switching at the terminal, possibly switch to the frequency range (refer to the terminal switches on the Target cell on the cell-of-origin, serve the identical position of frequency range with it) of the same position of Target cell, also possibly switch to the frequency range (refer to the terminal switches on the Target cell on the cell-of-origin, serve the different position of frequency range with it) of diverse location.And when the resource on the similar frequency bands of Target cell can not provide good channel quality or Target cell to need the balance sysmte capacity, need configurating terminal to use the resource on the different frequency range.
It is thus clear that, under this scene, just there is multiple situation, do not consider in the prior art that these condition of different come to carry into execution a plan to posting concrete switching.And prior art also can't be supported the demand under this scene at present, thereby possibly cause the system service quality to descend, even possibly make end of service.
Summary of the invention
Main purpose of the present invention provides the method for switching in a kind of long evolving system, with in the LTE system under the situation of system bandwidth greater than terminal bandwidth, make the terminal switch to Target cell effectively, accomplish handoff procedure.
Another object of the present invention provides a kind of terminal, to guarantee under the situation of terminal bandwidth less than system bandwidth, accomplishes handoff procedure.
For this reason, the present invention provides following technical scheme:
The method of switching in a kind of long evolving system, said method comprises step:
The switching command that send reception sources sub-district, terminal;
If terminal bandwidth is less than system bandwidth, then the frequency range on the Target cell that switches to as required of terminal and the relation of cell-of-origin service frequency range are carried out handover operation.
The switching command that send said cell-of-origin comprises:
The Target cell designated frequency band information that the carrier wave frequency information of Target cell and/or terminal need switch to.
Alternatively, the relation of frequency range on the Target cell that switches to as required of said terminal and the cell-of-origin service frequency range step of carrying out handover operation comprises:
Band information on the Target cell that switches to according to said terminal needs confirms whether the frequency range that needs switch on the Target cell is identical with cell-of-origin service frequency range;
If identical, then the terminal is directly switch to the Target cell designated frequency band;
If different, then the terminal combines reconfiguration course to switch to the Target cell designated frequency band.
Alternatively, the said terminal step that combines reconfiguration course to switch to the Target cell designated frequency band comprises:
The terminal switches on the Target cell and serves identical frequency range with the cell-of-origin;
On Target cell, reshuffle, be configured to the Target cell designated frequency band.
Alternatively, the said terminal step that combines reconfiguration course to switch to the Target cell designated frequency band comprises:
Reshuffle in the cell-of-origin at the terminal, be configured to Target cell on the identical frequency range of designated frequency band;
The terminal switches to the Target cell designated frequency band.
Alternatively, the relation of frequency range on the Target cell that switches to as required of said terminal and the cell-of-origin service frequency range step of carrying out handover operation comprises:
If the frequency range that the terminal need switch on the Target cell is different with cell-of-origin service frequency range, then the terminal changes frequency of operation, switches to the Target cell designated frequency band.
Alternatively, the relation of frequency range on the Target cell that switches to as required of said terminal and the cell-of-origin service frequency range step of carrying out handover operation comprises:
When the terminal need change frequency and could carry out on Target cell the operation that needs, required operation was carried out in the frequency range position of adjusting frequency and can receive common channel information in the terminal;
After operation is accomplished, the terminal Target cell designated frequency band of adjusting frequency again.
The operation that said terminal needs on Target cell comprises: measure and read system information.
A kind of terminal comprises: receiving element, transmitting element also comprise:
Switching type is known the unit, is used for knowing the switching type that needs carry out according to the system message that receiving element receives;
Switching mode is confirmed the unit, and the relation of frequency range on the Target cell that is used for switching to according to said switching type and needs and cell-of-origin service frequency range confirms to switch executive mode;
Switch performance element, be used for carrying out handover operation according to said definite switching executive mode.
Alternatively, said terminal also comprises:
The frequency adjustment unit; Being used for need changing frequency at the handoff procedure terminal could carry out under the situation in the operation of needs on the Target cell; The adjustment terminal frequency is to the frequency range position that can receive common channel information; And after the operation relevant with common signal channel accomplished at the terminal, terminal frequency is adjusted to the Target cell designated frequency band.
If it is to carry out with switching frequently under greater than the situation of terminal bandwidth in system bandwidth that switching type is known switching type that the unit is confirmed; Then switching mode confirms whether frequency range and the cell-of-origin service frequency range that unit judges need switch on the Target cell is identical; If identical, then indication switching performance element is directly switch to the Target cell designated frequency band; If different, then indication switching performance element combines reconfiguration course to switch to the Target cell designated frequency band.
Visible by above technical scheme provided by the invention; The present invention is directed to the characteristics that the LTE system supports that bandwidth varying is technological; Carry out under greater than the situation of terminal bandwidth when frequently switching in the LTE system bandwidth, switch to the difference of the frequency range on the Target cell, adopt different processing modes according to the terminal.If the terminal need switch to the similar frequency bands on the Target cell, then the terminal can not change frequency of operation, is directly switch to the Target cell designated frequency band; If the terminal need switch to the different frequency range on the Target cell; Then the terminal can change frequency of operation; Be directly switch to the Target cell designated frequency band then, particularly can also combine, switch to the Target cell designated frequency band through reconfiguration course in the sub-district and handoff procedure.Through this hand-off process, can make the terminal under the scene of complicacy, also can accomplish handoff procedure smoothly.The present invention has remedied prior art system bandwidth in handling the LTE system lacks effective solution under this scene greater than terminal bandwidth blank, the perfect handoff procedure of LTE system.
Description of drawings
Fig. 1 is the realization flow figure of an embodiment of the inventive method;
Fig. 2 is the judgment processing flow chart of various switching modes in the inventive method;
Fig. 3 is the theory diagram at terminal of the present invention.
Embodiment
Core of the present invention is to support the characteristics of bandwidth varying technology to the LTE system, carries out under greater than the situation of terminal bandwidth when frequently switching in the LTE system bandwidth, switches to the difference of the frequency range on the Target cell according to the terminal, adopts different processing modes.If the terminal need switch to the similar frequency bands on the Target cell, then the terminal does not change frequency of operation, is directly switch to the Target cell designated frequency band; If the terminal need switch to the different frequency range on the Target cell; Then the terminal changes frequency of operation; Be directly switch to the Target cell designated frequency band then, particularly can also combine, switch to the Target cell designated frequency band through reconfiguration course in the sub-district and handoff procedure.
In order to make those skilled in the art person understand the present invention program better, the present invention is controlled the further detailed description of method do of switching the time of implementation below in conjunction with accompanying drawing and execution mode.
With reference to Fig. 1, Fig. 1 shows the realization flow of an embodiment of the inventive method, may further comprise the steps:
Step 101: switching command is sent to the terminal in the cell-of-origin, and indicating terminal switches.In the signaling of this switching command, comprise: the Target cell designated frequency band information that the carrier wave frequency information of Target cell and/or terminal need switch to.
Step 102: after switching command is received at the terminal, confirm the switching type that needs carry out, that is to say, judge whether to carry out with switching frequently according to the information in the switching command.
The present technique field personnel know, after a sub-district is stationed at the terminal, can know the bandwidth of system according to the broadcast in this sub-district, thereby can learn that system bandwidth is whether greater than the bandwidth at terminal self.In addition, the terminal can know whether the carrier frequency of Target cell is identical with the carrier frequency of cell-of-origin according to the carrier wave frequency information of the Target cell that comprises in the hand off signaling.According to these information, just can determine whether and to carry out under less than the situation of system bandwidth with switching frequently in terminal bandwidth.
Then enter step 103 if carry out with switching frequently; Otherwise, enter step 104.
Step 103: the relation of frequency range on the Target cell that the terminal switches to as required and cell-of-origin service frequency range is carried out handover operation.
Step 104: the alien frequencies handoff procedure is carried out at the terminal.
Because in the LTE system; When system bandwidth during greater than terminal bandwidth; If with frequently switching, the terminal might not need change frequency of operation and switches to the Target cell similar frequency bands so, and promptly the terminal switches on the Target cell and on the cell-of-origin, serves the identical position of frequency range with it; Also might switch to the Target cell different frequency range, promptly the terminal switches on the Target cell and on the cell-of-origin, serves the different position of frequency range with it.And whether system can also can provide the good channel quality according to the resource on the similar frequency bands of Target cell, perhaps according to the capacity of each frequency range on the target cell carrier, confirms the frequency range on the Target cell that the terminal need switch to.
Therefore, to above-mentioned these situation, the present invention is when carrying out frequently switching together, and the frequency range on the Target cell that the terminal will switch to is as required carried out different handover operations with the relation of cell-of-origin service frequency range.Be elaborated in the face of this down.
1. the terminal switches on the Target cell and serves the identical frequency range of frequency range with the cell-of-origin, and the operation scheme of realization has:
(1) in handover execution stage, if the terminal need not change the operation that frequency just can be carried out to be needed on Target cell, the terminal can be directly switch to designated frequency band on the Target cell so.In this case, the terminal is switched and need do not changed frequency.
(2) in handover execution stage; If the terminal need change the operation that frequency just can be carried out to be needed on Target cell; The frequency range position (being generally the center frequency range of target cell carrier) that need adjust frequency earlier and can receive common channel information, terminal so; Behind the end of operation that execution needs, the terminal designated frequency band on the Target cell of adjusting frequency again.But if the designated frequency band on the Target cell is exactly this center frequency, then the terminal does not need to adjust frequency again.
More than this dual mode can select according to application need.
Wherein, the terminal need not change frequency and be meant that the terminal does not change the situation that frequency of operation just can receive the complete public channel bandwidth of Target cell, otherwise the terminal just needs to change frequency of operation.
The operation that needs is meant that frequency range reads the system information of carrying on the common signal channel or/and timing information in the center at the terminal, and perhaps the terminal need be carried out access operation at random etc. in the center.
Because the terminal is when switching to Target cell; Need on the common signal channel of Target cell, carry out sequence of operations; For example, measure and read and be used for supporting next step operated system information, after this just needs target approach sub-district, terminal; Common channel information can be received fully, the correct execution of switching could be guaranteed.Usually, common signal channel designs in the intermediate bands position of system bandwidth, and like this, the terminal is for can be at the enterprising line operate of common signal channel, and just need adjust frequency can receive on the frequency range position of common signal channel fully.Certainly; The design of common signal channel also can be that two identical common channels are arranged; To guarantee the terminal no matter can both receive the information on the common signal channel fully where, in this case, the terminal is with regard to the intermediate bands position of the system bandwidth of need not adjusting frequency.
2. the terminal switches on the Target cell and serves frequency range frequency range inequality with the cell-of-origin, and the operation scheme of realization has:
(1) in handover execution stage; If the terminal need not change the operation that frequency just can be carried out to be needed on Target cell; The terminal switches to frequency range identical with cell-of-origin service frequency range on the Target cell earlier (in this case so; Switch at the terminal need not change frequency), on Target cell, be reconfigured to designated frequency band again.
(2) in handover execution stage; If the terminal need not change the operation that frequency just can be carried out to be needed on Target cell; The terminal is reconfigured to earlier the frequency range identical with the Target cell designated frequency band on the cell-of-origin so; Carry out then with switching frequently, switch to Target cell designated frequency band (in this case, the terminal is switched and need do not changed frequency).
Reshuffling in above-mentioned (1), (2) be meant in same Serving cell, with terminal configuration to the enterprising line operate of other frequency ranges that is different from the current service frequency range.
Adopt this switching mode that combines with reconfiguration course,, avoided under this scene, carrying out alien frequencies and switched, therefore significantly reduced break period, can improve switch speed effectively owing to adopt with switching frequently.
(3) in handover execution stage, if the terminal need not change the operation that frequency just can be carried out to be needed on Target cell, the terminal is directly switch to designated frequency band on the Target cell (in this case, the terminal is switched and need do not changed frequency) so.The alien frequencies that this switching mode is similar in WCDMA (WCDMA) system switches.
(4) in handover execution stage; If interruption needs to change the operation that frequency just can be carried out to be needed on Target cell; The terminal center frequency range of Target cell of need adjusting frequency earlier so, behind the end of operation that needs, the terminal designated frequency band on the Target cell of adjusting frequency again.If the designated frequency band on the Target cell is exactly this center frequency, then the terminal does not need to adjust frequency again.
(4) to plant (2) the kind switching mode that the 1st kind of terminal of switching mode and front switch in the scheme of frequency range identical with cell-of-origin service frequency range on the Target cell identical.
With reference to Fig. 2, Fig. 2 shows the handling process of above various situation, may further comprise the steps:
Step 201: the terminal receives switches indication.
Step 202: the terminal determines whether the adjust frequency centre position frequency range of target cell carrier frequency of needs according to this switching indication.If desired, then enter step 203; Otherwise, enter step 205.
Step 203: the centre position frequency range of adjusting frequency, the operation of the line correlation of going forward side by side.
Step 204: after relevant operation is accomplished, the Target cell designated frequency band of adjusting frequency.Then, enter step 208.
Step 205: further judge whether to switch to identical frequency range, that is to say, judge whether whether the frequency range that switches on the Target cell identical with cell-of-origin service frequency range.If identical, then enter step 206; Otherwise, enter step 207.
Step 206: be directly switch to the Target cell designated frequency band.
Step 207: combine with reconfiguration course, switch to the Target cell designated frequency band.
In this step, the terminal can be carried out earlier with the frequency handoff procedure, switches to the identical frequency range of Target cell and cell-of-origin service frequency range, and reconfiguration course is initiated at the terminal on Target cell then, is reconfigured to the Target cell designated frequency band; Reconfiguration course also can be initiated in the terminal on the cell-of-origin, be reconfigured on the frequency range identical with order considerable scale sub-district designated frequency band, and then carry out switching to the Target cell designated frequency band with the frequency handoff procedure.
Step 208: after switching completion, completion is switched in the terminal indication.
Visible by above flow process; The present invention has provided concrete switching respectively to these condition of different and has carried into execution a plan; Through this scheme, can remedy prior art in the blank of handling solution under this scene, make the terminal under various complex scenes, all can accomplish handoff procedure smoothly.
Certainly, in the LTE system,, each scene of surface analysis maybe be not can supported, when practical application, concrete carrying into execution a plan can be selected as required for the complexity of minimizing system and terminal processes.
With reference to Fig. 3, Fig. 3 shows the theory diagram of a preferred embodiment at terminal of the present invention:
This terminal comprises: receiving element S1, transmitting element S2, switching type know that cell S 3, switching mode confirm cell S 4, switch performance element S5.
Wherein, receiving element S1 is used for the wireless signal that the receiving system side is sent; Transmitting element S2 is used for sending wireless signal to system side.Switching type knows that cell S 3 is used for knowing the switching type that needs carry out according to the system message that receiving element receives; Switching mode confirms that frequency range and the relation of cell-of-origin service frequency range on the Target cell that cell S 4 is used for switching to according to said switching type and needs confirm to switch executive mode; Switching performance element S5 is used for carrying out handover operation according to said definite switching executive mode.
The switching indication that receiving element S 1 receiving system side is sent comprises the carrier wave frequency information of Target cell and/or the Target cell designated frequency band information that the terminal need switch in this indication.Switching type knows that cell S 3 confirms switching type according to these information.If need carry out under greater than the situation of terminal bandwidth with switching frequently in system bandwidth; Then this switching type is notified to switching mode and confirmed cell S 4; Switching mode confirms whether frequency range and the cell-of-origin service frequency range that cell S 4 judgements need switch on the Target cell is identical; If identical, then indication switching performance element S5 is directly switch to the Target cell designated frequency band; If different, then indication switching performance element S5 combines reconfiguration course to switch to the Target cell designated frequency band.The concrete process of carrying out of switching can repeat no more at this with reference to the description of front to the inventive method.
Because the terminal is when switching to Target cell; Need on the common signal channel of Target cell, carry out sequence of operations; For example, measure and read and be used for supporting next step operated system information, after this just needs target approach sub-district, terminal; Common channel information can be received fully, the correct execution of switching could be guaranteed.If the design of common signal channel is that two identical common channels are arranged, can guarantee the terminal no matter can both receive the information on the common signal channel fully where.If the design of common signal channel is the intermediate bands position in system bandwidth; Then in order to guarantee that the terminal can be at the enterprising line operate of common signal channel; The frequency adjustment unit S6 that links to each other with receiving element S1 also need be set in terminal of the present invention; Need change frequency with terminal in handoff procedure could carry out under the situation of the operation that needs on the Target cell; Adjust terminal frequency to the frequency range position that can receive common channel information, and after the operation relevant with common signal channel accomplished at the terminal, terminal frequency is adjusted to the Target cell designated frequency band.
Under above-mentioned situation; When the terminal is in the non-central location frequency range; No matter whether the terminal switches on the Target cell identical with cell-of-origin service frequency range, all need earlier terminal frequency be adjusted to the center frequency range of Target cell by frequency adjustment unit S6, corresponding operating is carried out at the terminal; After action required was accomplished, frequency adjustment unit S6 adjusted to designated frequency band on the Target cell with terminal frequency again.If the designated frequency band on the Target cell is exactly this center frequency, then the terminal does not need to adjust frequency again.Thereby realize the switching from the cell-of-origin to the Target cell.
Though described the present invention through embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, hope that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (8)
1. the method for switching in the long evolving system is characterized in that said method comprises step:
The switching command that send reception sources sub-district, terminal;
If terminal bandwidth is less than system bandwidth, the frequency range on the Target cell that switches to as required of terminal and cell-of-origin service frequency range identical execution handover operation whether then;
Frequency range on the Target cell that switches to if desired is identical with cell-of-origin service frequency range, and then the terminal is directly switch to the Target cell designated frequency band;
Frequency range on the Target cell that switches to if desired is different with cell-of-origin service frequency range; Then the terminal changes frequency of operation and carries out handover operation; Perhaps need not change frequency at the terminal and just can carry out under the operational circumstances that needs on the Target cell, the terminal is directly switch to designated frequency band on the Target cell.
2. the method for claim 1 is characterized in that, the switching command that send said cell-of-origin comprises:
The Target cell designated frequency band information that the carrier wave frequency information of Target cell and/or terminal need switch to.
3. method according to claim 1 is characterized in that, said terminal changes frequency of operation and carries out handover operation and comprises:
The terminal switches on the Target cell and serves identical frequency range with the cell-of-origin;
On Target cell, reshuffle, be configured to the Target cell designated frequency band.
4. method according to claim 1 is characterized in that, said terminal changes frequency of operation and carries out handover operation and comprises:
Reshuffle in the cell-of-origin at the terminal, be configured to Target cell on the identical frequency range of designated frequency band;
The terminal switches to the Target cell designated frequency band.
5. according to claim 1 or claim 2 method is characterized in that, said terminal changes frequency of operation and carries out handover operation and comprises:
When the terminal need change frequency and could carry out on Target cell the operation that needs, required operation was carried out in the frequency range position of adjusting frequency and can receive common channel information in the terminal;
After operation is accomplished, the terminal Target cell designated frequency band of adjusting frequency again.
6. method as claimed in claim 5 is characterized in that, the operation that said terminal needs on Target cell comprises: measure and read system information.
7. terminal comprises: receiving element, transmitting element, it is characterized in that, and also comprise:
Switching type is known the unit, is used for knowing the switching type that needs carry out according to the system message that receiving element receives;
Switching mode is confirmed the unit; Be used for knowing that at said switching type switching type that the unit is confirmed is to carry out under greater than the situation of terminal bandwidth when frequently switching in system bandwidth; Whether the frequency range that judgement need switch on the Target cell is identical with cell-of-origin service frequency range; If identical, then indication switching performance element switches to the Target cell designated frequency band; If different, then indication switching performance element combines reconfiguration course to switch to the Target cell designated frequency band;
Switch performance element, be used for carrying out handover operation according to said definite switching executive mode.
8. terminal according to claim 7 is characterized in that, said terminal also comprises:
The frequency adjustment unit; Being used for need changing frequency at the handoff procedure terminal could carry out under the situation in the operation of needs on the Target cell; The adjustment terminal frequency is to the frequency range position that can receive common channel information; And after the operation relevant with common signal channel accomplished at the terminal, terminal frequency is adjusted to the Target cell designated frequency band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101098040A CN101128018B (en) | 2006-08-14 | 2006-08-14 | Switching method and terminal in long evolved system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101098040A CN101128018B (en) | 2006-08-14 | 2006-08-14 | Switching method and terminal in long evolved system |
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| CN101128018A CN101128018A (en) | 2008-02-20 |
| CN101128018B true CN101128018B (en) | 2012-08-08 |
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| CN2006101098040A Active CN101128018B (en) | 2006-08-14 | 2006-08-14 | Switching method and terminal in long evolved system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2742464C1 (en) * | 2017-01-06 | 2021-02-08 | Гуандун Оппо Мобайл Телекоммьюникейшнс Корп., Лтд. | Switching method, base station and terminal device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101686502B (en) * | 2008-09-26 | 2012-09-05 | 电信科学技术研究院 | Method, system and device for providing large transmission bandwidth for long-term evolution broadband system |
| CN101902786B (en) * | 2009-05-27 | 2013-01-23 | 电信科学技术研究院 | Cell switching control method in LTE system and base station |
| CN106454972B (en) * | 2015-08-10 | 2020-04-10 | 中国移动通信集团公司 | Method and device for switching signals between same physical frequency points and different frequency point numbers |
| KR20210003256A (en) * | 2018-05-04 | 2021-01-11 | 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 | Method for updating system information, terminal and network device |
| CN113038561B (en) * | 2021-04-29 | 2023-07-14 | Oppo广东移动通信有限公司 | Cell switching method, system, device, electronic equipment and storage medium |
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| CN1578490A (en) * | 2003-06-26 | 2005-02-09 | 北京三星通信技术研究有限公司 | Measurement method for switching inter RNC control frquency and intersystem |
| EP1610509A1 (en) * | 2004-06-24 | 2005-12-28 | Kabushiki Kaisha Toshiba | Ad-hoc wireless communication system with different frequency bandwidths |
| CN1735265A (en) * | 2004-08-13 | 2006-02-15 | 华为技术有限公司 | Different frequency switching method in CDMA communication system |
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| RU2742464C1 (en) * | 2017-01-06 | 2021-02-08 | Гуандун Оппо Мобайл Телекоммьюникейшнс Корп., Лтд. | Switching method, base station and terminal device |
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| CN101128018A (en) | 2008-02-20 |
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