CN101026860A - Cross-zone handover method for time division synchronous CDMA multi-frequency-point community cellular network - Google Patents
Cross-zone handover method for time division synchronous CDMA multi-frequency-point community cellular network Download PDFInfo
- Publication number
- CN101026860A CN101026860A CNA2006100078590A CN200610007859A CN101026860A CN 101026860 A CN101026860 A CN 101026860A CN A2006100078590 A CNA2006100078590 A CN A2006100078590A CN 200610007859 A CN200610007859 A CN 200610007859A CN 101026860 A CN101026860 A CN 101026860A
- Authority
- CN
- China
- Prior art keywords
- serving cell
- terminal
- service
- base station
- cell
- 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
Images
Abstract
The method includes following steps: configuring radio resources in each sector into two sorts: switching preserved resources, and not switching preserved resources, and making switching preserved resources between each adjacent sector inter orthogonal; when communicating on switching preserved resources of service sector, if terminal detects that SNR of receiving signal in adjacent sector is better than SNR at service sector, then reports the message to base station in service sector; the base station in service sector indicates the user to switch to switching preserved resources in adjacent sector, thus, the adjacent sector becomes service sector of the terminal, and the former service sector becomes adjacent sector so as to accomplish switching across sectors. The invention can reduce level of same frequency interference at edge of sector effectively so as to guarantee communication quality when mobile user is in switching procedure across sectors.
Description
Technical field
The present invention relates to field of wireless communication, relate in particular to the method for handover in the time division synchronous CDMA multi-frequency-point community cellular network.
Background technology
Beehive net is the modal networking modes of wireless telecommunications, and network topology structure as shown in Figure 1.Because network topology structure exactly likes honeycomb structure, Cellular Networks hence obtains one's name.Each cellular unit is represented the coverage of a base station transceiver in the Cellular Networks, and the portable terminal in this zone can be set up radio communication chain circuit with the base station.A plurality of transceivers are formed network, realize the continuous covering of a panel region, for customer mobile terminal provides immanent, continuous wireless communication services.
Fig. 2 provides typical cellular radio communication system framework.Typical wireless cellular communication system generally includes base station system and (comprises base station controller 21 and base station 11,12,13; Or base station controller 22 and base station 14,15,16) and 5 two parts of core net.Base station system and portable terminal are set up communication link aloft, finish the two-way transmission of voice, data message; Business datum (voice or data) inserts public network by core net 5, as PSTN (PSTN) or Intemet network.Core net 5 also is responsible for finishing to functions such as the authentication of validated user and mobile roaming controls.Base station system comprises base station transceiver 11,12,13/14,15,16 and base station controller 21/22.In time-division multiple address system, all base station transceivers require synchronously, and are for example synchronous with global position system GPS.Each base station controller 21/22 all has the Operation and Maintenance interface, is used for attended operation maintenance module 31/32.In network topological diagram, operating maintenance module 31/32 is as the centrostigma of single base station system, can set up the route of communicating by letter with a plurality of base station transceivers, finishes functions such as the data configuration of administration base station system and plant maintenances.For the network that disposes a plurality of base station controllers, then dispose a plurality of operating maintenance module 31/32 of regional Operation and Maintenance control desk 4 administrations.In network topological diagram, area Operation and Maintenance control desk 4 is as the centrostigma of a plurality of base station systems, can set up the route of communicating by letter with all base station transceivers under a plurality of base station systems, finish functions such as the data configuration of a plurality of base station systems of being administered and plant maintenances.
How guaranteeing the communication quality of mobile subscriber in handover procedure in the honeycomb networking, is one of basic measurement index of radio honeycomb networking capability.
The cellular network of Ying Yonging is a simulation fdma system (FDMA) the earliest, adopts the frequency division networking mode.Be that neighbor cell uses different frequencies, have between the sub-district of identical frequency across the sub-district of using different frequent points.Make the overlapping area of coverage on neighbor cell border not have co-channel interference like this.The mobile communication user moves to adjacent sub-district from a sub-district, need finish alien frequencies and switch, and belongs to hard handover approach; That is: in handoff procedure, there is a communicating interrupt.Portable terminal at first needs to disconnect former communication link, sets up new communication link with Target cell again.For direct-cut operation, be crucial switching time.If the direct-cut operation time is enough short, just in user's perception of communication less than communicating interrupt.
The representative of Digital Cellular System is tdma (TDMA) and CDMA (Code Division Multiple Access) (CDMA).
So-called code division multiple access is meant the pseudo noise code differentiation base station of the mutual nearly orthogonal of application and user's technology.Cdma system overcomes problem of co-channel interference based on CDMA (Code Division Multiple Access), makes the frequency repeat utilization ratio of cellular network reach 1: 1 in theory simultaneously.Under the identical networking situation, handover adopts soft handoff.So-called soft handover is meant and does not have communicating interrupt that in handoff procedure portable terminal is at first set up communication link with handover-target base station, carries out communication with a plurality of base stations simultaneously; When finding that certain signal of base station quality drops to below the thresholding, disconnect corresponding link again.Soft handoff is to connect afterwards earlier to break, and hard handover approach is the company of having no progeny earlier.The surface sees that soft handover has superiority with respect to direct-cut operation, does not have communicating interrupt in communication process.Soft switching process smoothly will cause handover success rate to improve.In fact, soft handover is the inevitable choice of CDMA identical networking.If there is not soft handover, the cdma network handover success rate will sharply descend.As seen, the application of soft handover has not only guaranteed the continuity of communication in handover procedure, also effectively reduces Zone switched co-channel interference level.
So-called time-division multiple address system is meant voice, the data message of distinguishing different user by different time-gap, disturbs to avoid producing between the different user.For the time-division multiple address system that adopts the TDD communication mode; its uplink downlink is shared same frequency resource; between uplink and downlink timeslot, leave enough big protection time slot, to avoid between uplink and downlink timeslot, having because crosstalking of causing of aerial transmission delay, as shown in Figure 2.Network Synchronization based on the TDMA radio network requirement strictness of TDD.For the time-division multiple address system that adopts the FDD communication mode, its uplink downlink uses different frequency resources, leaves enough big protection frequency band between uplink downlink, with crosstalking of avoiding producing between uplink downlink.The representative of FDD tdma is GSM.What the GSM cellular network adopted in essence is the frequency division networking plan, and handover belongs to direct-cut operation.
TD SDMA (TD-SCDMA) multi-carrier district is based on that TD-SCDMA technology derives out, is used to solve the technology of 0 time slot co-channel interference.
The structure of time slot of TD-SCDMA as shown in Figure 4 and Figure 5.Basic radio frames is the 10ms frame, and each 10ms radio frames is divided into two 5ms subframes again.Each 5ms subframe comprises 7 burst time slots and a special time slot.The protection bandwidth length is 96chips, is used to overcome the interference between the uplink downlink.Be called as professional transfer point between the adjacent up-downgoing burst time slot, agreement stipulates that each wireless sub-frame comprises two professional transfer points (referring to TS25.221 5A.1).First transfer point is positioned at special time slot, and standard code 0 time slot is as descending time slot, and 1 time slot is as ascending time slot.The professional transfer point of another one allows flexible configuration.0 time slot is used for control channel, for the important function of setting up of communication link.Under the identical networking situation, be subjected to neighbor cell interference for fear of 0 time slot, derive the notion of multi-frequency-point community.About the multi-frequency-point community system following agreement is arranged: (referring to industry standard)
" to supporting the sub-district of multifrequency point, the carrier frequency of carrying Primary Common Control Physical Channel (P-CCPCH) is called main carrier frequency, and the carrier frequency that does not carry P-CCPCH is called assistant carrier frequency.To supporting the sub-district of multifrequency point, there is and has only a main carrier frequency.
Main carrier frequency uses identical scrambler and basic midamble. with minor carrier
Common Control Channel DwPCH (downlink pilot frequency channel), P-CCPCH, PICH (Page Indication Channel), S-CCPCH (auxiliary publish control physical channel), PRACH (Packet Random Access Channel) waits regulation to be configured on the main carrier frequency.UpPCH (ascending pilot channel), FPACH forward physical access channel) the method FFS (For Further Study, after giving over to research) that on assistant carrier frequency, uses.And to supporting the sub-district of multifrequency point, beacon channel always sends on main carrier frequency.
The multi-slot configuration should be defined as on same carrier frequency.
Same user's uplink-downlink configuration is on same carrier frequency.
The TSO of assistant carrier frequency does not use.
The time slot transfer point proposed arrangement of main carrier frequency and assistant carrier frequency is identical.”
More than agreement has guaranteed that the cellular network that multi-frequency-point community is formed does not have co-channel interference on the TSO of main carrier frequency, thereby has guaranteed the correct demodulation of control signaling.But under the identical networking situation (neighbor cell use identical frequency communication), still have co-channel interference at the business time-slot of the overlapping area of coverage of neighbor cell, and the sub-district of overlapping covering is many more, co-channel interference is serious more.Though TD-SCDMA adopts CDMA technology in time slot, because the spreading gain in each time slot is limited, TDD system requirements uplink downlink strict synchronism has limited the application of soft hand-off in the TD-SCDMA network simultaneously.Therefore in the wireless network that multi-frequency-point community is formed, business time-slot will have a strong impact on mobile subscriber's communication quality in the co-channel interference that cell boarder is subjected to, even cause the switch area communicating interrupt.
Summary of the invention
The technical problem to be solved in the present invention provides the method for handover in a kind of time division synchronous CDMA multi-frequency-point community cellular network, can guarantee the continuity of communication, and effectively reduces the co-channel interference level at cellular cell edge.
In order to solve the problems of the technologies described above, the invention provides the method for handover in the time division synchronous CDMA multi-frequency-point community cellular network, may further comprise the steps:
(a) be two kinds of handoff reservation resource and non-handoff reservation resources with the radio-resource-configuration of each sub-district, and make the handoff reservation resource of each neighbor cell mutually orthogonal;
(b) terminal during communication, is better than Serving cell if detect the adjacent area snr of received signal on the handoff reservation resource of Serving cell, then by the information reporting base station in service sector;
(c) base station in service sector indication user switches to the handoff reservation resource of neighbor cell, and this neighbor cell becomes the Serving cell of this terminal, and former Serving cell becomes neighbor cell, finishes handover.
Further, said method also can have following characteristics: in the described step (a), the described mutually orthogonal reserved resource of neighbor cell or the time slot of being meant staggers mutually, and perhaps frequency staggers mutually, and perhaps time slot and frequency stagger mutually.
Further, said method also can have following characteristics: in the described step (a), the main carrier of neighbor cell is configured on the different frequencies, and with the handoff reservation resource distribution of each sub-district on main carrier.
Further, said method also can have following characteristics: terminal is on the non-handoff reservation resource of Serving cell during communication, if the communication quality of this Terminal Service sub-district descends, this portable terminal is switched on the handoff reservation resource of described Serving cell and continue communication.
Further, said method also can have following characteristics: terminal is on the non-handoff reservation resource of Serving cell during communication, if detect the E2 incident, promptly the service time slot interference power of current service cell is higher than a thresholding, and this E2 incident duration is more than or equal to T
E2, this E2 incident reports base station in service sector with triggering, and this base station in service sector instruction portable terminal switches on the handoff reservation resource of Serving cell and continues communication.
Further, said method also can have following characteristics: terminal is on the handoff reservation resource of Serving cell during communication, if the communication quality of this Terminal Service sub-district meets the communication quality requirement, this portable terminal is switched on the non-handoff reservation resource of described Serving cell and continue communication.
Further, said method also can have following characteristics: terminal is on the handoff reservation resource of Serving cell during communication, if detect the E3 incident, promptly the service time slot interference power of current service cell is lower than a thresholding, and this E3 incident duration is more than or equal to T
E3, this E3 incident reports base station in service sector with triggering, and this Serving cell instruction user switches on the non-handoff reservation resource of described Serving cell and continues communication.
Further, said method also can have following characteristics: in the described step (b), terminal is on the handoff reservation resource of Serving cell during communication, if detect the E1 incident, promptly neighbor cell Primary Common Control Physical Channel received signal power intensity is better than current service cell and difference and surpasses a sluggish biasing H
E1, and this E1 incident duration is more than or equal to T
E1, this E1 incident reports base station in service sector with triggering.
Further, said method also can have following characteristics: terminal is on the non-handoff reservation resource of Serving cell during communication, if detect the E1 incident, promptly neighbor cell Primary Common Control Physical Channel received signal power intensity is better than current service cell and difference and surpasses a sluggish biasing H
E1, and this E1 incident duration is more than or equal to T
E1, this E1 incident reports base station in service sector with triggering, and this Serving cell instruction user switches on the non-handoff reservation resource of neighbor cell and continues communication, and this neighbor cell becomes the Serving cell of this terminal, and former Serving cell becomes neighbor cell, finishes handover.
In sum, the inventive method makes full use of the characteristics of TD-SCDMA multi-frequency-point community, and the TD-SCDMA Radio Resource divides by timeslice, and co-channel interference mainly is created in features such as cellular cell border, the combining wireless resource regulating method effectively reduces level of same frequency interference at edge of sector.Thereby guaranteed the communication quality of mobile subscriber in handover procedure.
Description of drawings
Fig. 1 is the honeycomb communication network topological diagram;
Fig. 2 is a typical cellular communication system schematic diagram;
Fig. 3 is based on the communication time slot schematic diagram of the time-division multiple address system of time division duplex (TDD);
Fig. 4 is the 10ms of a TD-SCDMA system frame structure;
Fig. 5 is the 5ms of a TD-SCDMA system subframe structure;
Fig. 6 is the schematic diagram of timeslot scheduling state in the embodiment of the invention.
Embodiment
Cellular network with TD-SCDMA multi-frequency-point community tissue is an example below, in conjunction with the accompanying drawings, the inventive method is further described.
The present invention is based on the thought that cellular cell is divided into interior outskirt, in conjunction with handover procedure, dispatch by Radio Resource (time slot, frequency etc.), make to be in the user that cellular cell outskirt (the overlapping area of coverage/switch area) belongs to the different base station sub-district and to use mutually orthogonal Radio Resource communication, to avoid co-channel interference.TD-SCDMA multi-frequency-point community of the present invention system is that neighbor cell has disposed mutually orthogonal Radio Resource by operation maintaining background, hereinafter is referred to as the handoff reservation resource.Mutually orthogonal implication is: the reserved resource or the time slot of neighbor cell stagger mutually, and perhaps frequency staggers mutually, and perhaps the both staggers.
In the multi-frequency-point community system, the handoff reservation resource can be unified on the same carrier wave, also can be distributed on the different carrier waves.The number needs of concrete reserved resource will be according to service switchover amount demand flexible configuration.Because the main carrier place frequency difference of neighbor cell, present embodiment on main carrier, occupies all business time-slots of main carrier with the handoff reservation resource distribution.
In the multi-frequency-point community Cellular Networks, in arbitrary cells, be in the following nothing more than two states of user under the communication state:
State 1 definition: portable terminal uses the non-handoff reservation resource communication of certain base station cell;
State 2 definition: portable terminal uses the handoff reservation resource communication of certain base station cell.
No matter be in which kind of state, portable terminal can adopt periodic method to detect the main carrier PCCPCH received power Q of current service cell
kWith neighbor cell main carrier PCCPCH received power Q
i(i=1,2 ..., N; I ≠ k), unit is dBm.Neighbor cell has one or more.Portable terminal detects based on main carrier PCCPCH received power, adopts the thresholding mode to report testing result.
No matter for which kind of state, portable terminal can adopt periodic method to detect the dl interference power I of service time slot
TX(dBm), and with thresholding relatively, adopt the thresholding mode to report testing result.
The trigger event (Event) that reports based on above power detection comprising:
The E1 incident: adjacent area PCCPCH received signal power intensity is better than current service cell
Formula: Q
i〉=Q
k+ K
E1
H wherein
E1For the sluggishness biasing, can determine default value according to theoretical calculate and emulation, in actual applications, can optimize and revise according to network environment.This incident evaluation algorithm is: when portable terminal detects the E1 incident, and this incident duration is more than or equal to T
E1, this incident reports triggering.
The E2 incident: the service time slot interference power of current service cell is higher than a certain thresholding
Formula: I
TX〉=T
Ph
This incident evaluation algorithm is: when portable terminal detects the E2 incident, and this incident duration is more than or equal to T
E2, this incident reports triggering.
The E3 incident: the service time slot interference power of current service cell is lower than a certain thresholding
Formula: I
TX≤ T
Ph-H
E3
H wherein
E3For the sluggishness biasing, can determine default value according to theoretical calculate and emulation; In actual applications, can optimize and revise according to network environment.This incident evaluation algorithm is: when portable terminal detects the E3 incident, and this incident duration is more than or equal to T
E3, this incident reports triggering.
TE1, TE2, TE3 are lag times, can determine default value according to emulation, also can be optimized adjustment according to the real network wireless environment, send a portable terminal by the BSS system with form of message.
Base station system is implemented scheduling of resource according to the reported result of portable terminal, the conversion of control portable terminal between two kinds of communication states.As shown in Figure 6, concrete state transition condition is as follows:
State transition condition 1:, then switch to Serving cell state 2 by Serving cell state 1 if be in the mobile terminal reporting E2 incident of state 1;
State transition condition 2:, then switch to Serving cell state 1 by Serving cell state 2 if be in the mobile terminal reporting E3 incident of state 2;
State transition condition 3:, then switch to the state 2 of Target cell by the state 2 of Serving cell if be in the mobile terminal reporting E1 incident of state 2;
State transition condition 4:, then switch to the state 1 of Target cell by the state 1 of Serving cell if be in the mobile terminal reporting E1 incident of state 1;
Finish after the above configuration, below the embodiment of the invention is described in detail, in the present embodiment, portable terminal uses the non-switchable resource communication of Serving cell, and the present embodiment handover comprises following steps:
Step 1, portable terminal detects the P-CCPCH received power of Serving cell and neighbor cell, and detects the interference power of service time slot;
Step 2 is when portable terminal detects the service time slot interference power of Serving cell greater than thresholding T
PhThe time, portable terminal is by the information reporting base station in service sector;
Step 3, base station in service sector instruction portable terminal switch on the handoff reservation resource of Serving cell and continue communication;
Step 4, when portable terminal detects neighbor cell PCCPCH received power greater than Serving cell PCCPCH received power, and difference surpasses a certain sluggish biasing H
E1The time, H
E1Be used to avoid table tennis to switch, portable terminal is by the information reporting base station in service sector;
Step 5, base station in service sector instruction portable terminal switches to the handoff reservation resource of neighbor cell, and this neighbor cell becomes Serving cell, and former Serving cell becomes neighbor cell;
Step 6 is when portable terminal detects the service time slot interference power of its current Serving cell less than T
Ph-H
E3The time, H
E3Be the sluggishness biasing, be used to avoid table tennis to switch, portable terminal is by the information reporting base station in service sector;
Step 7, the current base station in service sector of this terminal instruction portable terminal switch on the non-handoff reservation resource of Serving cell and continue communication.
In another embodiment of the present invention, portable terminal uses the non-switchable resource communication of Serving cell, when portable terminal detects the PCCPCH received power that certain neighbor cell PCCPCH received power is higher than Serving cell, and difference surpasses a certain sluggish biasing HE1, and portable terminal is by the information reporting base station in service sector; Base station in service sector instruction portable terminal switches on the non-handoff reservation resource of neighbor cell and continues communication.
May there be this switching in some special networks environment.Such as may being that the different districts signal covers inside and outside the elevator, so portable terminal may detect one in a flash at certain and becomes big adjacent area suddenly.If do not finish switching in this case fast, just may cause because of causing call drop switching time long (repeatedly the time of Qie Huaning and).Another situation, when offered load was very low, the co-channel interference level was very low.Therefore the E2 incident may not report, and directly reports the E1 incident.Can be directly switch to Target cell state 1 from Serving cell state 1 in this case.
The above is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention; Every according to equivalence variation and modification that the present invention did, all contained by protection scope of the present invention.
Claims (9)
1, the method for handover in the time division synchronous CDMA multi-frequency-point community cellular network may further comprise the steps:
(a) be two kinds of handoff reservation resource and non-handoff reservation resources with the radio-resource-configuration of each sub-district, and make the handoff reservation resource of each neighbor cell mutually orthogonal;
(b) terminal during communication, is better than Serving cell if detect the adjacent area snr of received signal on the handoff reservation resource of Serving cell, then by the information reporting base station in service sector;
(c) base station in service sector indication user switches to the handoff reservation resource of neighbor cell, and this neighbor cell becomes the Serving cell of this terminal, and former Serving cell becomes neighbor cell, finishes handover.
2, the method for claim 1 is characterized in that, in the described step (a), the described mutually orthogonal reserved resource of neighbor cell or the time slot of being meant staggers mutually, and perhaps frequency staggers mutually, and perhaps time slot and frequency stagger mutually.
3, the method for claim 1 is characterized in that, in the described step (a), the main carrier of neighbor cell is configured on the different frequencies, and with the handoff reservation resource distribution of each sub-district on main carrier.
4, the method for claim 1, it is characterized in that, terminal if the communication quality of this Terminal Service sub-district descends, switches to this portable terminal on the handoff reservation resource of described Serving cell and continues communication on the non-handoff reservation resource of Serving cell during communication.
5, as claim 1 or 4 described methods, it is characterized in that terminal is on the non-handoff reservation resource of Serving cell during communication, if detect the E2 incident, the service time slot interference power that is current service cell is higher than a thresholding, and this E2 incident duration is more than or equal to T
E2, this E2 incident reports base station in service sector with triggering, and this base station in service sector instruction portable terminal switches on the handoff reservation resource of Serving cell and continues communication.
6, the method for claim 1, it is characterized in that, terminal if the communication quality of this Terminal Service sub-district meets the communication quality requirement, switches to this portable terminal on the non-handoff reservation resource of described Serving cell and continues communication on the handoff reservation resource of Serving cell during communication.
7, as claim 1 or 6 described methods, it is characterized in that terminal is on the handoff reservation resource of Serving cell during communication, if detect the E3 incident, the service time slot interference power that is current service cell is lower than a thresholding, and this E3 incident duration is more than or equal to T
E3, this E3 incident reports base station in service sector with triggering, and this Serving cell instruction user switches on the non-handoff reservation resource of described Serving cell and continues communication.
8, the method for claim 1, it is characterized in that, in the described step (b), terminal is on the handoff reservation resource of Serving cell during communication, if detect the E1 incident, promptly neighbor cell Primary Common Control Physical Channel received signal power intensity is better than current service cell and difference and surpasses a sluggish biasing H
E1, and this E1 incident duration is more than or equal to T
E1, this E1 incident reports base station in service sector with triggering.
9, the method for claim 1, it is characterized in that, terminal is on the non-handoff reservation resource of Serving cell during communication, if detect the E1 incident, promptly neighbor cell Primary Common Control Physical Channel received signal power intensity is better than current service cell and difference surpasses a sluggish biasing H
E1, and this E1 incident duration is more than or equal to T
E1, this E1 incident reports base station in service sector with triggering, and this Serving cell instruction user switches on the non-handoff reservation resource of neighbor cell and continues communication, and this neighbor cell becomes the Serving cell of this terminal, and former Serving cell becomes neighbor cell, finishes handover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100078590A CN100556186C (en) | 2006-02-21 | 2006-02-21 | Method of handover in the time division synchronous CDMA multi-frequency-point community cellular network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100078590A CN100556186C (en) | 2006-02-21 | 2006-02-21 | Method of handover in the time division synchronous CDMA multi-frequency-point community cellular network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101026860A true CN101026860A (en) | 2007-08-29 |
| CN100556186C CN100556186C (en) | 2009-10-28 |
Family
ID=38744662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100078590A Expired - Fee Related CN100556186C (en) | 2006-02-21 | 2006-02-21 | Method of handover in the time division synchronous CDMA multi-frequency-point community cellular network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100556186C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010124432A1 (en) * | 2009-04-27 | 2010-11-04 | 华为技术有限公司 | Random wireless access method, equipment and system |
| CN102036266A (en) * | 2009-09-30 | 2011-04-27 | 鼎桥通信技术有限公司 | Event trigger reporting and measuring method of Iub interface |
| CN102118844A (en) * | 2011-03-23 | 2011-07-06 | 华为技术有限公司 | Dispatching method, dispatching device and base station |
| CN102195700A (en) * | 2011-06-10 | 2011-09-21 | 西安交通大学 | Scheduling transmission method for collaborative cells against cell edge users of downlink |
| CN102413526A (en) * | 2010-09-21 | 2012-04-11 | 中兴通讯股份有限公司 | Method for selecting switching object cell and base station controller |
| CN102893664A (en) * | 2010-04-02 | 2013-01-23 | 株式会社Ntt都科摩 | Mobile apparatus and method in mobile communication system |
| CN103167567A (en) * | 2011-12-16 | 2013-06-19 | 华为技术有限公司 | Method and device for mobile terminal to switch base stations |
-
2006
- 2006-02-21 CN CNB2006100078590A patent/CN100556186C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102550113A (en) * | 2009-04-27 | 2012-07-04 | 华为技术有限公司 | Random wireless access method, equipment and system |
| WO2010124432A1 (en) * | 2009-04-27 | 2010-11-04 | 华为技术有限公司 | Random wireless access method, equipment and system |
| CN102036266A (en) * | 2009-09-30 | 2011-04-27 | 鼎桥通信技术有限公司 | Event trigger reporting and measuring method of Iub interface |
| CN102036266B (en) * | 2009-09-30 | 2013-08-07 | 鼎桥通信技术有限公司 | Event trigger reporting and measuring method of Iub interface |
| CN102893664A (en) * | 2010-04-02 | 2013-01-23 | 株式会社Ntt都科摩 | Mobile apparatus and method in mobile communication system |
| US9144004B2 (en) | 2010-04-02 | 2015-09-22 | Ntt Docomo, Inc. | Mobile station and method for mobile communication system |
| CN102413526A (en) * | 2010-09-21 | 2012-04-11 | 中兴通讯股份有限公司 | Method for selecting switching object cell and base station controller |
| CN102413526B (en) * | 2010-09-21 | 2014-08-13 | 中兴通讯股份有限公司 | Method for selecting switching object cell and base station controller |
| CN102118844A (en) * | 2011-03-23 | 2011-07-06 | 华为技术有限公司 | Dispatching method, dispatching device and base station |
| CN102118844B (en) * | 2011-03-23 | 2013-11-06 | 华为技术有限公司 | Dispatching method, dispatching device and base station |
| CN102195700A (en) * | 2011-06-10 | 2011-09-21 | 西安交通大学 | Scheduling transmission method for collaborative cells against cell edge users of downlink |
| CN103167567A (en) * | 2011-12-16 | 2013-06-19 | 华为技术有限公司 | Method and device for mobile terminal to switch base stations |
| WO2013087037A1 (en) * | 2011-12-16 | 2013-06-20 | 华为技术有限公司 | Method and device for mobile terminal to hand off base stations |
| CN103167567B (en) * | 2011-12-16 | 2015-08-19 | 华为技术有限公司 | The method and apparatus of mobile terminal base station shifting |
| US9602256B2 (en) | 2011-12-16 | 2017-03-21 | Huawei Technologies Co., Ltd. | Method and apparatus for mobile terminal to switch base station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100556186C (en) | 2009-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101064920B (en) | Method for realizing cross-zone handoff in TD-SCDMA multi-frequency point cell | |
| CN100556186C (en) | Method of handover in the time division synchronous CDMA multi-frequency-point community cellular network | |
| CN102271414B (en) | Method for transmission scheduling and device thereof | |
| CN100375561C (en) | Method for distributing radio resource in multiple carrier time-division duplex mobile communication system | |
| CN100353806C (en) | Relay switch-over method in TD-SCDMA mobile communication system | |
| WO2006006052A1 (en) | Transmitting of cell management information in a cellular communication network | |
| KR20010043442A (en) | Method and base station system for assigning channels in a radio communications system | |
| CN101594173A (en) | Carrier wave in a kind of multicarrier system and power distribution method | |
| CN1816198A (en) | Method for reducing small-region interference in time-division synchronous CDMA accessing system | |
| CN102257747A (en) | Method of and apparatuses for recognizing an out-of-sync base station | |
| CN101212797B (en) | Uplink pilot time slot position adjusting method and radio network controller | |
| CN103391168A (en) | Method and device for controlling disturbance | |
| CN100499864C (en) | Method for eliminating common-frequency interference in time-division multiple-address honeycomb communication system | |
| CN1848706B (en) | Method and system for synchronizing up-link | |
| CN102264113B (en) | Virtual soft switching method in time division-synchronous code division multiple access (TD-SCDMA) system | |
| CN101374313B (en) | Method for measuring iso system | |
| WO2019232690A1 (en) | Resource configuration for cross-link interference measurement | |
| CN101094015B (en) | Method for controlling initial emission power in open loop in mobile communication system | |
| CN103379550A (en) | Information transferring method and system | |
| EP2144379A1 (en) | Coordinating of network nodes | |
| CN101094503A (en) | Network forming and switching method and device in wireless communication system | |
| CN103368604A (en) | Multipath searching method and device of adaptive adjustment search windows | |
| CN1691555B (en) | A method for reducing uplink synchronous channel interference in TD-SCDMA access system | |
| CN1798005B (en) | Method of same regional coverage in multiple subzones in TDS-CDMA system | |
| CN101185351B (en) | Method for controlling macro diversity mode based on the user's QoS requirement difference |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20150221 |
|
| EXPY | Termination of patent right or utility model |