CN1635818A - Method for cell switching in mobile communication system - Google Patents
Method for cell switching in mobile communication system Download PDFInfo
- Publication number
- CN1635818A CN1635818A CN 200310125407 CN200310125407A CN1635818A CN 1635818 A CN1635818 A CN 1635818A CN 200310125407 CN200310125407 CN 200310125407 CN 200310125407 A CN200310125407 A CN 200310125407A CN 1635818 A CN1635818 A CN 1635818A
- Authority
- CN
- China
- Prior art keywords
- portable terminal
- sub
- district
- mobile communication
- communication system
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000010295 mobile communication Methods 0.000 title claims abstract description 18
- 230000006854 communication Effects 0.000 abstract description 12
- 238000004891 communication Methods 0.000 abstract description 11
- 230000011664 signaling Effects 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 10
- 238000005259 measurement Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000004807 localization Effects 0.000 description 3
- 230000009897 systematic effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
This invention refers to a method for switching community served for mobile terminal in mobile communication system, which can reduce as possible the use measuring process when mobile terminal switches among communities, so as to reducing system signaling load and raising communication quality in switching. Said method contains the network side obtaining community switching need of mobile terminal and judging whether the object community can cover the current position of mobile terminal according to preset community cover range information, if it can, then switching mobile terminal to said object community.
Description
Technical field
The present invention relates in the mobile communication system changing method, particularly have the changing method of the sub-district of hierarchy in the mobile communication system for the sub-district of portable terminal service.
Background technology
The Microcell technology is to grow up on the basis of macrocell, is one of efficient ways that solves at present high traffic regional capacity problem.
The covering radius of Microcell is approximately 30m-300m; Transmitting power is less, generally below 1W; Antenna for base station places low relatively place, and the 5m-10m that generally is above the ground level propagates and mainly carries out along sight line, and signal is little in the leakage of roof.Therefore, can be used to strengthen radio and cover, eliminate " blind spot " in the macrocell.Simultaneously because the microcell base station of low transmitting power allows less frequency reuse distance, the channel quantity of each unit area is more, therefore traffic density has obtained huge growth, and disturb very low, it is placed on " focus " of macrocell, can satisfies the requirement of this tiny area quality and capacity two aspects.
In actual design, Microcell replenishes as wireless coverage, generally is used for macrocell and does not cover and have than the place of Bulk Call such as underground meeting room, playroom, subway, tunnel etc.Occasion as hot spot application generally is the area that telephone traffic is relatively concentrated, as shopping center, recreation center, conference centre, commercial building, parking lot and other places.
Along with the development of Microcell and picocell, the floored community technology puts forward rapidly in recent years.It provides and more " includes " sub-district (Cell), forms layered cell structure (Hierarchical Cell Structure is called for short " HCS "), mainly solves " blind spot " and " focus " problem in the network, improves network capacity.In a layered cell structure, the sub-district of different sizes is overlapped, the closely adjacent and existence simultaneously in the base station of different transmission power, and whole communication network presents multi-level structure.Each layer distributes different frequency bands, to guarantee independent running between each layer, and can the phase mutual interference.As portable terminal (MobileTerminal, be called for short " MT ") when inserting, system is that appropriate sub-district is selected in a certain calling according to the capacity of measured signal strength signal intensity and each sub-district, it is the same with common sub-district switching that interlayer switches (HandOver is called for short " HO "), and switching point is determined by system, finish by the automatic assisted handover measurements of portable terminal, handoff procedure also depends on capacity at different levels at that time, if Microcell and picocell are saturated, business will switch to more higher leveled sub-district.
A floored community network, the polynary cell system of forming by a upper strata macrocell network and several lower floor's micro cells networks often.It comprises macrocell, Microcell and picocell.The difference in functionality that defines is already carried out in every kind of sub-district.In general, macrocell is used to handle the business of fast moving vehicle, and Microcell is handled at a slow speed and moved, and concentrates on the business of walking or traffic jam vehicle, and picocell is used to cover room areas such as market and Office Area.The reason of layering is relevant with handoff functionality in a manner described with load, because vehicle mobile terminals fast moving between Microcell can produce frequent switching, the burden of emphasis network, from network management, to such as the fast moving vehicle, can produce the frequent object that switches and transfer to the less macrocell of switching, will improve network efficiency; And for the vehicle that moves at a slow speed, because it passes cell boarder and need spend the long time, it is less to produce the possibility of switching, and therefore handles this class business by Microcell.
Because the complexity on the layered cell structure is frequently switched between the sub-district when portable terminal moves, and makes each cell load equilibrium simultaneously, needs to use user's scheduling strategy to realize the reasonable distribution of user in floored community.User's scheduling strategy here is meant that system determines the Target cell that portable terminal switches according to the factors such as translational speed of portable terminal, also will take into account factors such as each cell capacity and disposal ability simultaneously.After having determined Target cell, system will carry out the sub-district to portable terminal and switch, and the sub-district switching comprises that portable terminal is in switching and the switching of portable terminal between the different layers sub-district between the layer sub-district together.
Below be existing a kind of cell switching method: when portable terminal when system sends handoff request, system requires portable terminal that the several adjacent cells around it are carried out signal measurement earlier, detect a best sub-district of signal quality wherein with it as the portable terminal Target cell, and then portable terminal carried out the sub-district switch.In once switching normally, between user and network, to measure many Signalling exchanges such as control, measurement report, switching command, switching affirmation.If the frequency that the portable terminal adjacent cells is used and the frequency of current area are not simultaneously, the user need obtain certain free time in communication process, the frequency that receiver is switched to Target cell is measured, and constantly idle what measure, receiver stops to accept this cell signal.Usually it is constantly idle to use compact model (Compressed Mode is called for short " CM ") to obtain, and under compact model, system carries out temporal compression to the data that will transmit, and the data of original normal transmission were sent in the shorter time.
In actual applications, there is following problem in such scheme: when portable terminal carried out the sub-district switching, system signaling was busy, and switch speed is slower, and communication quality reduces, and systematic function reduces.
Cause the main cause of this situation to be, when portable terminal speed changes, because terminal is when switching between each sub-district, introduce flow processs such as measuring control and measurement report, so just postponed switch speed, extra increase the signaling load in the system, cause system signaling busy; When portable terminal switches between the sub-district, start compact model and measure, influence communication quality to determine Target cell; Under compact model, in order to reach the recipient, need to increase system emission power with communication efficiency the same under the normal mode, can produce serious disturbance to other users' signal, during as if transmit power limited, will influence communication quality.
Summary of the invention
In view of this, main purpose of the present invention is to provide cell switching method in a kind of mobile communication system, makes to reduce user's measuring process when portable terminal switches between the sub-district as far as possible, to reduce the system signaling load, improves the communication quality when switching.
For achieving the above object, the invention provides cell switching method in a kind of mobile communication system, comprise following steps:
The network side of described mobile communication system obtains the sub-district switching demand of portable terminal;
Described network side judges according to pre-configured cell coverage area information whether Target cell can cover the current location of described portable terminal, if then with blind this Target cell that switches to of described portable terminal.
Wherein, also comprise following steps:
When described network side can't judge according to pre-configured cell coverage area information whether Target cell can cover the current location of described portable terminal, described portable terminal is normally switched.
When the coverage of described Target cell can cover the coverage of sub-district, the current place of described portable terminal fully, judge that described Target cell can cover the current location of described portable terminal.
The current location of described portable terminal is recorded by global positioning system, and reports described network side.
Described sub-district is the floored community that mutual covering relation is arranged.
Also comprise following steps:
Dispose mutual covering relation, timing relationship and the frequency information of all sub-districts at described network side.
Described sub-district switching demand is a kind of in the following situation:
The coverage of another sub-district is shifted in the position of the described portable terminal of conversing from the coverage of a sub-district;
Described portable terminal is conversed at the overlapping area of two sub-districts, and the business of sub-district, the current place of described portable terminal is too busy;
The translational speed of described portable terminal changes.
By relatively finding, technical scheme difference with the prior art of the present invention is, blind switch decision and blind switching method have been introduced, system is when switching to the sub-district of portable terminal service, earlier judge according to the community configured information of network side whether Target cell can cover the current location of portable terminal, if then with direct blind this Target cell that switches to of portable terminal, need not enable a series of flow processs such as measurement, therefore do not need many signaling to hand over the family between network and the portable terminal, portable terminal need not start the situation that compact model comes the measurement target sub-district simultaneously.
Difference on this technical scheme has brought comparatively significantly beneficial effect, promptly system when portable terminal is carried out blind switchings, the signaling load reduction, switch speed and switch laggard speeding up of working and talk about has improved the overall performance of system; Reduce compact model simultaneously to influence and interference that signal brings, improved user's speech quality.
Description of drawings
Fig. 1 is the flow chart of cell switching method in a kind of mobile communication system according to an embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, at first in step 100, the system manager can obtain floored community information according to the content of the network planning and construction, and system is carried out information configuration.
Specifically, the floored community information spinner here will refer to comprise covering relation, timing relationship and frequency information etc. in order to carry out the relation information between each sub-district in the necessary layered cell structure of blind switching.Wherein, covering relation shows the position relation of a sub-district and other sub-district, comprises whether whether this sub-district is covered fully by other one or more sub-districts, perhaps covered one or more other sub-districts etc.Need timing relationship to be because there is different clocks different sub-districts, the start time of their photos and sending messages might be different, after portable terminal switches to another sub-district from a sub-district, for proper communication, with regard to the sub-district clock synchronization that must and switch to, just can obtain the clock of Target cell according to the timing relationship between current area and the Target cell.Frequency information is used for the frequency of the receiver Target cell of indicating mobile terminal, makes portable terminal switch to after the Target cell, just the receiver frequency can be adjusted to the Target cell frequency immediately, carries out proper communication.In the present invention, timing relationship and frequency information directly obtain can improve the user switch to finish behind the Target cell up-downgoing synchronously with the speed that begins to communicate by letter.
In that the needed information configuration of blind switching can start blind handover mechanism after well to system.Enter step 110 this moment, system obtains portable terminal and switches demand.Generally speaking, the process that a portable terminal that is in call setup state or busy condition is transformed on the new Traffic Channel is called switching.Switching is determined by system, generally will switch under following several situations: a kind of is that the portable terminal of conversing is shifted to another sub-district from a sub-district, the generation of switching at first is base station transceiver (BaseTransceiver Station, being called for short " BTS ") the notice portable terminal reaches Broadcast Control Channel (Broadcasting Control Channel for information about with its peripheral cell BTS's, be called for short " BCCH ") carrier frequency, signal strength signal intensity is measured, also to measure its shared Traffic Channel (Traffic Channel simultaneously, abbreviation " TCH ") signal strength signal intensity and transmission quality, again measurement result is sent to base control BSC, BSC compares queuing according to these information to peripheral cell, Here it is " location ", at last makes whether needing the decision of switching by BSC.When BSC also need differentiate switches, and switches to which BTS.Another kind is that portable terminal is conversed at two sub-district overlapping areas, residing this Zone of portable terminal is busy especially, at this moment base station controller (Base Station Controller, abbreviation " BSC ") signal strength signal intensity, the channel quality of its adjacent cell of notice mobile terminal test, whether decision switches to another sub-district with it, and this is the needed switching of traffic balance; Also having a kind of is in the floored community, when the translational speed of portable terminal changes, gives BSC with the velocity variations situation report, and BSC judges according to the existing situation in sub-district whether needs carry out the sub-district switching.
Then enter step 120, after system obtained the switching demand of portable terminal, according to the current information of portable terminal, system judged whether portable terminal satisfies blind switching condition.If satisfy blind switching condition, then enter step 130, otherwise enter step 140.Need to prove, in the present embodiment, the judgment condition of carrying out blind switching is: need switch to other one deck to portable terminal from current area if work as system, system can confirm that certain sub-district of destination layer has covered the current area of portable terminal fully according to the hierarchy relation, then portable terminal satisfies blind switching condition, and this sub-district is exactly a Target cell.Why the condition that comprises fully with this sub-district is that system can only navigate to portable terminal a certain sector or a certain sub-district, accurately localisation of mobile terminals because generally.Under this condition, have only when portable terminal when a certain sub-district switches to high-rise sub-district, promptly switch to bigger relatively sub-district and just can carry out blind switching from little sub-district.Therefore if system's accurate localization portable terminal more, a kind of blind switch decision condition that can replace is then arranged, be system if can learn that the portable terminal that will switch is positioned within certain sub-district of its destination layer that will switch, then this portable terminal also satisfies blind switching condition, and this sub-district is exactly a Target cell.If portable terminal is arranged within a plurality of sub-districts of destination layer simultaneously, then system can select or at random with the Target cell of selecting a sub-district will switch to as portable terminal someway.Under this replacement situation, Target cell can be bigger than current area, and promptly portable terminal can switch to high-rise sub-district, also can be littler than current area, and promptly portable terminal can switch to the low layer sub-district.The key point of blind switching condition judgement is that the position relation of portable terminal and destination layer sub-district can be judged accurately according to Given information by system.
In addition, be positioned within the scope of Target cell, then also can judge and satisfy blind switching condition if can directly judge the current location of portable terminal.Multiple mobile terminal locating method has been arranged at present, uploaded to network side for example by global positioning system (Global Position System is called for short " GPS ") location, and with locating information; Also have, can be by measuring the distance of portable terminal to several adjacent base stations, allow the distance of back by these distances and known base station, calculate the current location of portable terminal.These technology are comparative maturity, can obtain the current location of portable terminal by these technical network sides, if portable terminal is supported these location technologies, then network side can judge directly in conjunction with the coverage information of pre-configured sub-district whether this portable terminal satisfies blind switching condition.
In step 130, owing to judge that in step 120 portable terminal satisfies blind switching condition, therefore system carries out blind switching to portable terminal in this step.Be that system does not need portable terminal to measure the situation of its adjacent cells, and directly portable terminal switched according to the relation between the existing sub-district.Therefore need not measure needed many signalings of conventional switching such as control, measurement report, switching command, switching affirmation between network and the portable terminal, thereby reduce the signaling load.Finish after simultaneously also having improved the portable terminal switch speed and switched to Target cell up-downgoing synchronously with the speed that begins to communicate by letter.Because when satisfying blind switching condition, the frequency information and the timing information of Target cell can directly be learnt by system according to existing information, portable terminal need not start compact model and obtain these information, thereby avoided owing to start the negative effect of compact model to the communication of mobile terminal quality, can not cause simultaneously interference yet, effectively raise systematic function other signal.
In step 140, owing to judge that in step 120 portable terminal does not satisfy blind switching condition, therefore system carries out the routine switching to portable terminal in this step.The condition that portable terminal does not satisfy blind switching is meant that present current area can not be comprised fully by Target cell under system can not pinpoint situation to portable terminal.Or in system accurately under the situation of localisation of mobile terminals position, portable terminal is not within any sub-district of destination layer.At this moment, system all will carry out conventional treatment.Promptly still to start signaling processes such as measuring control, measurement report, switching command, switching affirmation.
Generally speaking, introduced after blind switch decision and the blind switching, system may use two kinds of changing methods when portable terminal is switched, blind switching method and conventional changing method.But in general, systematic function and the communication quality of portable terminal when switching all improved.
In addition, according to the above description, those of ordinary skill in the art are appreciated that the present invention can be applied in any mobile communication system that layered cell structure arranged.
Though by reference some preferred embodiment of the present invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that, can do various changes to it in the form and details, and the spirit and scope of the present invention that do not depart from appended claims and limited.
Claims (7)
1. cell switching method in the mobile communication system is characterized in that, comprises following steps:
The network side of described mobile communication system obtains the sub-district switching demand of portable terminal;
Described network side judges according to pre-configured cell coverage area information whether Target cell can cover the current location of described portable terminal, if then with blind this Target cell that switches to of described portable terminal.
2. cell switching method in the mobile communication system according to claim 1 is characterized in that, also comprises following steps:
When described network side can't judge according to pre-configured cell coverage area information whether Target cell can cover the current location of described portable terminal, described portable terminal is normally switched.
3. cell switching method in the mobile communication system according to claim 1, it is characterized in that, when the coverage of described Target cell can cover the coverage of sub-district, the current place of described portable terminal fully, judge that described Target cell can cover the current location of described portable terminal.
4. cell switching method in the mobile communication system according to claim 1 is characterized in that the current location of described portable terminal is recorded by global positioning system, and reports described network side.
5. cell switching method in the mobile communication system according to claim 1 is characterized in that, described sub-district is the floored community that mutual covering relation is arranged.
6. cell switching method in the mobile communication system according to claim 5 is characterized in that, also comprises following steps:
Dispose mutual covering relation, timing relationship and the frequency information of all sub-districts at described network side.
7. according to cell switching method in any described mobile communication system in the claim 1 to 6, it is characterized in that described sub-district switching demand is a kind of in the following situation:
The coverage of another sub-district is shifted in the position of the described portable terminal of conversing from the coverage of a sub-district;
Described portable terminal is conversed at the overlapping area of two sub-districts, and the business of sub-district, the current place of described portable terminal is too busy;
The translational speed of described portable terminal changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310125407 CN1285239C (en) | 2003-12-29 | 2003-12-29 | Method for cell switching in mobile communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310125407 CN1285239C (en) | 2003-12-29 | 2003-12-29 | Method for cell switching in mobile communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1635818A true CN1635818A (en) | 2005-07-06 |
| CN1285239C CN1285239C (en) | 2006-11-15 |
Family
ID=34845121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310125407 Expired - Lifetime CN1285239C (en) | 2003-12-29 | 2003-12-29 | Method for cell switching in mobile communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1285239C (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100417301C (en) * | 2005-12-05 | 2008-09-03 | 华为技术有限公司 | Blind switching method in cell load control |
| WO2008134966A1 (en) * | 2007-04-30 | 2008-11-13 | Huawei Technologies Co., Ltd. | A method, user terminal, network-side device and wireless communication system for measurement control |
| WO2009097816A1 (en) * | 2008-02-04 | 2009-08-13 | Huawei Technologies Co., Ltd. | Method of handover from macro-cell to private cell and macro-network system thereof |
| CN101562846B (en) * | 2008-04-18 | 2011-07-13 | 中兴通讯股份有限公司 | Method, system and network side for blind switching |
| CN101754265B (en) * | 2010-01-14 | 2012-02-01 | 华为技术有限公司 | Method and device for cell switching control |
| CN102625392A (en) * | 2010-01-14 | 2012-08-01 | 华为技术有限公司 | Channel switch control method and channel switch control equipment |
| US8260302B2 (en) | 2007-04-30 | 2012-09-04 | Huawei Technologies Co., Ltd. | Measurement control method, user equipment and network-side device |
| CN101616467B (en) * | 2008-06-23 | 2012-10-17 | 华为技术有限公司 | Method and device for moving UE to restricted network |
| CN102843737A (en) * | 2011-06-24 | 2012-12-26 | 中国电信股份有限公司 | Idle switch method and terminal in CDMA (Code Division Multiple Access) 2000 1x network |
| CN101232628B (en) * | 2007-01-22 | 2013-01-23 | 华为技术有限公司 | Method and customer equipment for searching network |
| CN103546938A (en) * | 2008-03-19 | 2014-01-29 | 夏普株式会社 | Mobile station device and processing method thereof |
| CN101785341B (en) * | 2007-06-20 | 2014-07-16 | 诺基亚西门子通信公司 | Controlling handover |
| WO2014161329A1 (en) * | 2013-08-12 | 2014-10-09 | 中兴通讯股份有限公司 | Blind handover or blind redirection method, system and related device |
| WO2022067821A1 (en) * | 2020-09-30 | 2022-04-07 | 深圳市大疆创新科技有限公司 | Communication method and apparatus, and unmanned aerial vehicle |
| WO2022073165A1 (en) * | 2020-10-08 | 2022-04-14 | Qualcomm Incorporated | Techniques for indicating frequency band during blind handover |
-
2003
- 2003-12-29 CN CN 200310125407 patent/CN1285239C/en not_active Expired - Lifetime
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100417301C (en) * | 2005-12-05 | 2008-09-03 | 华为技术有限公司 | Blind switching method in cell load control |
| CN101232628B (en) * | 2007-01-22 | 2013-01-23 | 华为技术有限公司 | Method and customer equipment for searching network |
| WO2008134966A1 (en) * | 2007-04-30 | 2008-11-13 | Huawei Technologies Co., Ltd. | A method, user terminal, network-side device and wireless communication system for measurement control |
| US8260302B2 (en) | 2007-04-30 | 2012-09-04 | Huawei Technologies Co., Ltd. | Measurement control method, user equipment and network-side device |
| US8615244B2 (en) | 2007-04-30 | 2013-12-24 | Huawei Technologies Co., Ltd. | Measurement control method, user equipment and network-side device |
| US8335517B2 (en) | 2007-04-30 | 2012-12-18 | Huawei Technologies Co., Ltd. | Measurement control method, user equipment and network-side device |
| CN101785341B (en) * | 2007-06-20 | 2014-07-16 | 诺基亚西门子通信公司 | Controlling handover |
| WO2009097816A1 (en) * | 2008-02-04 | 2009-08-13 | Huawei Technologies Co., Ltd. | Method of handover from macro-cell to private cell and macro-network system thereof |
| CN101505510B (en) * | 2008-02-04 | 2011-02-02 | 华为技术有限公司 | Method for handover between macro cell and private cell, macro network system |
| CN103546938B (en) * | 2008-03-19 | 2018-02-09 | 夏普株式会社 | Mobile station apparatus and its processing method, base station apparatus and its processing method |
| CN103546938A (en) * | 2008-03-19 | 2014-01-29 | 夏普株式会社 | Mobile station device and processing method thereof |
| CN101562846B (en) * | 2008-04-18 | 2011-07-13 | 中兴通讯股份有限公司 | Method, system and network side for blind switching |
| CN101616467B (en) * | 2008-06-23 | 2012-10-17 | 华为技术有限公司 | Method and device for moving UE to restricted network |
| CN102625392A (en) * | 2010-01-14 | 2012-08-01 | 华为技术有限公司 | Channel switch control method and channel switch control equipment |
| CN101754265B (en) * | 2010-01-14 | 2012-02-01 | 华为技术有限公司 | Method and device for cell switching control |
| CN102625392B (en) * | 2010-01-14 | 2014-11-05 | 华为技术有限公司 | Channel switch control method and channel switch control equipment |
| CN102843737A (en) * | 2011-06-24 | 2012-12-26 | 中国电信股份有限公司 | Idle switch method and terminal in CDMA (Code Division Multiple Access) 2000 1x network |
| CN102843737B (en) * | 2011-06-24 | 2015-08-19 | 中国电信股份有限公司 | Idle handoff method for mobile communication devices in CDMA2000 1x network and terminal |
| CN104378731A (en) * | 2013-08-12 | 2015-02-25 | 中兴通讯股份有限公司 | Blind switching or blind redirection method and system and associated equipment |
| WO2014161329A1 (en) * | 2013-08-12 | 2014-10-09 | 中兴通讯股份有限公司 | Blind handover or blind redirection method, system and related device |
| WO2022067821A1 (en) * | 2020-09-30 | 2022-04-07 | 深圳市大疆创新科技有限公司 | Communication method and apparatus, and unmanned aerial vehicle |
| WO2022073165A1 (en) * | 2020-10-08 | 2022-04-14 | Qualcomm Incorporated | Techniques for indicating frequency band during blind handover |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1285239C (en) | 2006-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1285239C (en) | Method for cell switching in mobile communication system | |
| CN100546405C (en) | A kind of method that generates adjacent sub-district | |
| CN1117504C (en) | Method for determining execution time of inter-frequency hard handoff and establishing hard handoff environment | |
| EP0659327B1 (en) | Best server selection in layered cellular radio systems | |
| CN1284404C (en) | Improved CDMA soft hand-off | |
| CN100345454C (en) | Method for providing an MBMS service in a wireless communication system | |
| CN1077390C (en) | Signal strength controlled directed retry in a mobile radiotelephone system | |
| CN1104784C (en) | Method and apparatus of power control in CDMA dispatch system | |
| CN1192668C (en) | GSM transceiver unit equiped for time of arrival measurements | |
| CA2103904C (en) | Listening control channel in a cellular mobile radiotelephone system | |
| CN1251551C (en) | Carrier selection method | |
| CN100551121C (en) | The method of mobile terminal skip zone autonomous switching | |
| CN101365242A (en) | Method and system based on mobile prediction and group switching | |
| JP2000515705A (en) | Method and apparatus for reliable inter-system handoff in a CDMA system | |
| CN1504053A (en) | Switching between ultrawide broadband cell | |
| CN1653831A (en) | Antenna adaptation to manage the active set to manipulate soft hand-off regions | |
| CN1237838A (en) | Method and system for controlling pilot measurement request order (PMRO) | |
| CN1134184C (en) | Method and device for preventing toggling between two zones of wireless communications network | |
| CN1250579A (en) | Centralized radio network control in a mobile communications system | |
| CN1539248A (en) | Handover in cellular radio systems | |
| CN1348671A (en) | Method and device for performing handover using location information | |
| EP1215930B1 (en) | Transceiver station and method for use in cellular radio communications | |
| CN1247010A (en) | Radio telephone systems and method of operation | |
| CN100502589C (en) | Method and device for zone-cross switchover of mobile communication system | |
| CN1121801C (en) | Method of providing matrix indicating interference relationships between cells of cellular communication system |
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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20061115 |
|
| CX01 | Expiry of patent term |