CN104284378A - Switching method and device - Google Patents
Switching method and device Download PDFInfo
- Publication number
- CN104284378A CN104284378A CN201410514548.8A CN201410514548A CN104284378A CN 104284378 A CN104284378 A CN 104284378A CN 201410514548 A CN201410514548 A CN 201410514548A CN 104284378 A CN104284378 A CN 104284378A
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- Prior art keywords
- mobile subscriber
- described mobile
- current
- network
- measurement report
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
Abstract
The invention discloses a switching method. The method comprises the steps that when it is judged that a mobile user needing to conduct switching has service borne by an HSDPA channel currently, the mobile user is transferred to a DCH channel at the rate lower than an intersystem switching rate threshold; 3C measurement control is issued to the mobile user when the mobile user is located in the DCH channel and the current network rate is not higher than the intersystem switching rate threshold so that UE can free up adequate downlink resources to conduct BSIC verification, intersystem measurement can be accurately initiated, the PS intersystem switching success rate and the network dropping rate can be increased, and the perceptibility of the user is promoted.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of changing method.The present invention also relates to a kind of radio network controller (RNC) simultaneously.
Background technology
Along with the development of living standard, the experience of mobile terminal is more and more by people are paid attention to.As 3G (3G (Third Generation) Moblie standard) standard that user can be made to access express network, TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, the CDMA (Code Division Multiple Access) of time division synchronous) mobile terminal in network is at HSDPA (High Speed Downlink Packet Access, high-speed slender body theory) network and GSM (Global System for Mobile Communication, global system for mobile communications) quality of handoff between network becomes the key factor weighing experience.
As shown in Figure 1, for mobile terminal under TD-SCDMA network in prior art carries out the schematic flow sheet that switches.TD-SCDMA network cover edge but GSM covers good area, when certain user does high speed HSDPA PS service downloading under TD network, sometime due to the fluctuation of TD signal, or the movement of user causes measurement report between terminal triggering system, and occur to trigger this algorithm when 3G->2G switches.
Particularly, the process being switched to GSM network by TD-SCDMA network is divided into: sending measuring controls, UE measurements satisfies condition reports process, RNC switch decision and execution handoff procedure.Switch decision principle and condition are distinguished as follows:
As RNC (Radio Network Controller, radio network controller) the Survey control message of an Ev3a is issued after RB_Setup_Complete message when receiving UE call setup to UE, after this UE measures 1g always simultaneously, the level signal of 2a and 3a, namely UE is simultaneously at the Cell level signal measuring TD and GSM.
The level measuring the TD Serving cell at place as UE satisfies condition 1, meets the GSM cell signal level condition 2 measured simultaneously, and continues the time of TimeToTrigger more than, and UE reports the measurement report of 3a event.
Condition 1:RSCP, s (TD) <=ThresholdOwnSystem (RSCP level)-Hystersis/2
Condition 2:Rxlev, n (GSM)+CellIndivalOffset/2>=ThresholdOthSys+Hyste rsis/2
Can find out according to above condition, in the judging process that the measurement result of mobile terminal switches at network, play critical effect.But, inventor is realizing finding in process of the present invention, when the mobile terminal of support TD-SCDMA network existing in the market occurs to switch between gsm system under HSDSCH service condition, the support verified for 2G cell BSIC is also bad, when especially existing with frequency GSM adjacent area, easily cause measurement result to there is more serious error, cause intersystem handover failure.
Summary of the invention
The invention provides a kind of changing method, verify by network quality, speed and GSM BSIC the problem affected in order to solve when mobile terminal switches in prior art, the method is applied in the CDMA (Code Division Multiple Access) TD-SCDMA network of time division synchronous, and the method comprises:
Judge that the mobile subscriber needing to carry out switching is current and whether have service bearer in high-speed downlink packet access HSDPA channel;
If described mobile subscriber is current the business being carried on described HSDPA channel, then by described mobile subscriber to migrate to DCH channel lower than the speed of intersystem handover rate threshold;
When described mobile subscriber be in described DCH channel and current network rate not higher than described intersystem handover rate threshold time, issue 3C Survey control to described mobile subscriber, report 3C measurement report to make described mobile subscriber according to described 3C Survey control and switch to gsm system.
Correspondingly, the invention allows for a kind of radio network controller (RNC), it is characterized in that, described RNC is applied in the CDMA (Code Division Multiple Access) TD-SCDMA network of time division synchronous, and this RNC also comprises:
Whether judge module, have service bearer in high-speed downlink packet access HSDPA channel for judging that the mobile subscriber needing to carry out switching is current;
Reprovision module, for when described mobile subscriber is current have a business being carried on described HSDPA channel time, by described mobile subscriber to migrate to DCH channel lower than the speed of intersystem handover rate threshold;
Interface module, for be in described DCH channel as described mobile subscriber and current network rate not higher than described intersystem handover rate threshold time, issue 3C Survey control to described mobile subscriber, report 3C measurement report to make described mobile subscriber according to described 3C Survey control and switch to gsm system.
As can be seen here, by applying technical scheme of the present invention, judge to need the mobile subscriber that carries out switching is current have a business being carried on HSDPA channel time, by this mobile subscriber to migrate to DCH channel lower than the speed of intersystem handover rate threshold, and be in DCH channel and current network rate does not issue 3C Survey control higher than during described intersystem handover rate threshold to mobile subscriber mobile subscriber, make UE can vacate abundant downlink resource and carry out BSIC verification, reach between accurate initiation system and measure, improve PS intersystem handover success rate, improve drop rate, promote user perceptibility.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of switch decision in prior art;
Fig. 2 is the schematic flow sheet of a kind of changing method that the present invention proposes;
Fig. 3 is the schematic flow sheet of a kind of changing method that the specific embodiment of the invention proposes;
Fig. 4 is the structural representation of a kind of RNC that the present invention proposes.
Embodiment
As stated in the Background Art, when existing handoff technique does not consider that mobile terminal switches, network quality and speed are for the impact switched.Thus, mobile terminal is when performing HSDPA high speed business, when network side issues isosystem measurement order, it is bad that terminal verifies support to GSM BSIC, when especially existing with frequency GSM adjacent area, cause terminal measure error serious, easily cause PS handoff failure and go offline, having a strong impact on user awareness.
Although switch often failure for the existing mobile terminal of high speed business, but inventor finds, these terminals are at low speed DCH (Dedicated Channel, dedicated channel) BSIC verification can be carried out to GSM signal under state, efficiently avoid the handoff failure between the PS system being forbidden to cause in target handover cell.Therefore, the present invention is by being Low-rate traffic high speed PS business reduction of speed, terminal is allowed to take some resource of single time slot, make UE can vacate abundant downlink resource and carry out BSIC verification, reach between accurate initiation system and measure, improve PS intersystem handover success rate, improve drop rate, promote the object of user perceptibility.
As shown in Figure 2, be the schematic flow sheet of a kind of changing method that the present invention proposes, comprise the following steps:
Whether S201, judging that the mobile subscriber needing to carry out switching is current has service bearer in high-speed downlink packet access HSDPA channel.
In order to improve the efficiency of switching further, present invention also adds blind function of cutting, measured by 2D and report can be directly switch between system with cover or macrocell.Particularly, before this step, can judge between the system whether Serving cell of described mobile subscriber is configured with co-space feedback system with coverage cell or macrocell; If so, described mobile subscriber is then indicated to be directly switch into described same coverage cell or described macrocell, to make the tangential described gsm system of described mobile subscriber; If not, then continue to judge that described mobile subscriber is current and whether have service bearer in high-speed downlink packet access HSDPA channel.
It is to be noted, during application the present embodiment, need initialization process, namely after the PS business of described mobile subscriber is set up, issue 2D Survey control according to network settings to described mobile subscriber, with make described mobile subscriber detect the signal of described Serving cell report 2D measurement report when being down to below threshold condition and initiate switch.
S202, if described mobile subscriber is current the business being carried on described HSDPA channel, then by described mobile subscriber to migrate to DCH channel lower than the speed of intersystem handover rate threshold.
For the mobile subscriber needing to switch, it is likely currently have service bearer in HSDPA channel, under now this mobile subscriber must be in fast state, but on the other hand, even if mobile subscriber is in DCH channel, its speed is also likely higher than speed desirable when switching, if the therefore current business not being carried on described HSDPA channel of described mobile subscriber, the present embodiment will judge that whether the current network rate of described mobile subscriber is higher than described intersystem handover rate threshold further, and the network rate of described mobile subscriber is down within described intersystem handover rate threshold higher than during described intersystem handover rate threshold at the network rate that described mobile subscriber is current.
S203, when described mobile subscriber be in described DCH channel and current network rate not higher than described intersystem handover rate threshold time, issue 3C Survey control to described mobile subscriber, report 3C measurement report to make described mobile subscriber according to described 3C Survey control and switch to gsm system.
In addition, if received 2F measurement report before receiving described 3C measurement report, then stop 3C measuring, and detect the 2D measurement report whether receiving described mobile subscriber and send.
In order to set forth technological thought of the present invention further, now in conjunction with concrete application scenarios, the flow chart of the specific embodiment of the invention is as shown in Figure 3 described.
In the concrete implementing procedure shown in Fig. 3,2D Survey control is issued according to network settings after user PS business is set up, when terminal detects Serving cell (TD community) poor signal, and meet corresponding threshold condition, namely 2D is reported to report, if Serving cell has between the system of configuration co-space feedback system with covering or macrocell, direct switching is with covering or macrocell, if do not had, then issue 3C Survey control go measure all adjacent areas of 2G system, by changing down or adjustment channel and report 3C report be switched to gsm system.In addition, if network side have received 2F report (native system signal quality is higher than certain thresholding) before receiving 3C, then stop 3C measuring, after receiving 2D report next time, restart 3C measure.
Can find out according to foregoing, " between PS system changing down switchover policy " realizes one of key content of the present invention, and this strategy is based on 2D/2F+3C intersystem handover strategy.After network side receives 2D report, have between system with covering or macrocell, first be switched to covering or macrocell, if, do not judge current DCH channel up-downgoing service rate summation whether higher than " intersystem handover rate threshold " or have service bearer on HSDSCH channel, if the speed that the current DCH speed of UE sets higher than network side or have service bearer HSDSCH channel on, first reduction of speed issues 3C measurement again to " intersystem handover rate threshold " or to move to lower than " intersystem handover rate threshold " on DCH channel, 2G system is switched to after receiving 3C report.
In addition, for above content event parameter, be described as follows:
1.2D event
Implication: native system signal quality, lower than certain thresholding, receives this Event Description native system signal quality poor.
The native system signal quality ThresholdOwnSystem that UE measures meets following formula and continues after duration reaches " Time to trigger ", will report 2D event:
ThresholdOwnSystem (RSCP level) <=TUsed 2d-Hystersis/2
ThresholdOwnSystem (RSCP level): native system signal quality, is measured by UE
TUsed 2d:2D thresholding
Hystersis:2D value is sluggish
Time to trigger:2D time lag
2.2F event
Implication: native system signal quality, higher than certain thresholding, receives this Event Description native system signal quality better.
The native system signal quality ThresholdOwnSystem that UE measures meets following formula and continues after duration reaches " Time to trigger ", will report 2F event:
ThresholdOwnSystem (RSCP level) >=TUsed2f+Hystersis/2
ThresholdOwnSystem (RSCP level): native system signal quality, is measured by UE
TUsed2f:2F thresholding
Hystersis:2D value is sluggish
Time to trigger:2F time lag
3.3C event
Implication: different system signal quality, higher than certain thresholding, receives this Event Description different system signal quality better.
The different system signal mass M Other RAT that UE measures meets following formula and continues after duration reaches " Time to trigger ", will report 3C event:
MOtherRAT+CIOOther?RAT>＝TOther?RAT+Hystersis/2
MOther RAT: native system signal quality, is measured by UE, and unit is dBm
CIOOther RAT: the community individual character skew of different system cell, configures in different system adjacent cell relation table
TOther RAT:3C thresholding
The value of Hystersis: event 3c is sluggish
Time to trigger:3C time lag
In order to reach above technical purpose, the invention allows for a kind of radio network controller (RNC), described RNC is applied in the CDMA (Code Division Multiple Access) TD-SCDMA network of time division synchronous, and as shown in Figure 4, this RNC also comprises:
Whether judge module 410, have service bearer in high-speed downlink packet access HSDPA channel for judging that the mobile subscriber needing to carry out switching is current;
Reprovision module 420, for when described mobile subscriber is current have a business being carried on described HSDPA channel time, by described mobile subscriber to migrate to DCH channel lower than the speed of intersystem handover rate threshold;
Interface module 430, for be in described DCH channel as described mobile subscriber and current network rate not higher than described intersystem handover rate threshold time, issue 3C Survey control to described mobile subscriber, report 3C measurement report to make described mobile subscriber according to described 3C Survey control and switch to gsm system.
In concrete application scenarios, also comprise:
Speed measuring module, for when described mobile subscriber is current be not carried on the business of described HSDPA channel time, judge that whether the current network rate of described mobile subscriber is higher than described intersystem handover rate threshold further, and higher than during described intersystem handover rate threshold, the network rate of described mobile subscriber is down within described intersystem handover rate threshold at the network rate that described mobile subscriber is current.
In concrete application scenarios, described judge module, also for judging between the system whether Serving cell of described mobile subscriber is configured with co-space feedback system with coverage cell or macrocell;
If so, then described judge module indicates described mobile subscriber to be directly switch into described same coverage cell or described macrocell, to make the tangential described gsm system of described mobile subscriber;
If not, then described judge module continues to judge that described mobile subscriber is current and whether has service bearer in high-speed downlink packet access HSDPA channel.
In concrete application scenarios, described interface module, also for after the PS business of described mobile subscriber is set up, issue 2D Survey control according to network settings to described mobile subscriber, with make described mobile subscriber detect the signal of described Serving cell report 2D measurement report when being down to below threshold condition and initiate switch.
In concrete application scenarios, also comprise:
Stop module, during for receiving 2F measurement report before receiving described 3C measurement report, stop 3C measuring, and detect the 2D measurement report whether receiving described mobile subscriber and send.
By applying technical scheme of the present invention, judge to need the mobile subscriber that carries out switching is current have a business being carried on HSDPA channel time, by this mobile subscriber to migrate to DCH channel lower than the speed of intersystem handover rate threshold, and be in DCH channel and current network rate does not issue 3C Survey control higher than during described intersystem handover rate threshold to mobile subscriber mobile subscriber, make UE can vacate abundant downlink resource and carry out BSIC verification, reach between accurate initiation system and measure, improve PS intersystem handover success rate, improve drop rate, promote user perceptibility.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention can by hardware implementing, and the mode that also can add necessary general hardware platform by software realizes.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions and perform each method implementing described in scene of the present invention in order to make a computer equipment (can be personal computer, server, or the network equipment etc.).
It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram preferably implementing scene, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device implemented in scene can carry out being distributed in the device of enforcement scene according to implementing scene description, also can carry out respective change and being arranged in the one or more devices being different from this enforcement scene.The module of above-mentioned enforcement scene can merge into a module, also can split into multiple submodule further.
The invention described above sequence number, just to describing, does not represent the quality implementing scene.
Be only several concrete enforcement scene of the present invention above, but the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (10)
1. a changing method, is characterized in that, described method is applied in the CDMA (Code Division Multiple Access) TD-SCDMA network of time division synchronous, and the method comprises:
Judge that the mobile subscriber needing to carry out switching is current and whether have service bearer in high-speed downlink packet access HSDPA channel;
If described mobile subscriber is current the business being carried on described HSDPA channel, then by described mobile subscriber to migrate to DCH channel lower than the speed of intersystem handover rate threshold;
When described mobile subscriber be in described DCH channel and current network rate not higher than described intersystem handover rate threshold time, issue 3C Survey control to described mobile subscriber, report 3C measurement report to make described mobile subscriber according to described 3C Survey control and switch to gsm system.
2. the method for claim 1, is characterized in that, also comprises:
If the current business not being carried on described HSDPA channel of described mobile subscriber, then judge further that whether the current network rate of described mobile subscriber is higher than described intersystem handover rate threshold, and higher than during described intersystem handover rate threshold, the network rate of described mobile subscriber is down within described intersystem handover rate threshold at the network rate that described mobile subscriber is current.
3. the method for claim 1, is characterized in that, is judging to need whether the mobile subscriber that carries out switching is current had service bearer before high-speed downlink packet access HSDPA channel, also comprise:
Judge between the system whether Serving cell of described mobile subscriber is configured with co-space feedback system with coverage cell or macrocell;
If so, described mobile subscriber is then indicated to be directly switch into described same coverage cell or described macrocell, to make the tangential described gsm system of described mobile subscriber;
If not, then continue to judge that described mobile subscriber is current and whether have service bearer in high-speed downlink packet access HSDPA channel.
4. method as claimed in claim 3, is characterized in that, before judging between the system whether Serving cell of described mobile subscriber is configured with co-space feedback system with coverage cell or macrocell, also comprises:
Described mobile subscriber PS business set up after, issue 2D Survey control according to network settings to described mobile subscriber, with make described mobile subscriber detect the signal of described Serving cell report 2D measurement report when being down to below threshold condition and initiate switch.
5. method as claimed in claim 5, is characterized in that, after issuing 3C Survey control to described mobile subscriber, also comprise:
If received 2F measurement report before receiving described 3C measurement report, then stop 3C measuring, and detect the 2D measurement report whether receiving described mobile subscriber and send.
6. a radio network controller (RNC), is characterized in that, described RNC is applied in the CDMA (Code Division Multiple Access) TD-SCDMA network of time division synchronous, and this RNC also comprises:
Whether judge module, have service bearer in high-speed downlink packet access HSDPA channel for judging that the mobile subscriber needing to carry out switching is current;
Reprovision module, for when described mobile subscriber is current have a business being carried on described HSDPA channel time, by described mobile subscriber to migrate to DCH channel lower than the speed of intersystem handover rate threshold;
Interface module, for be in described DCH channel as described mobile subscriber and current network rate not higher than described intersystem handover rate threshold time, issue 3C Survey control to described mobile subscriber, report 3C measurement report to make described mobile subscriber according to described 3C Survey control and switch to gsm system.
7. RNC as claimed in claim 6, is characterized in that, also comprise:
Speed measuring module, for when described mobile subscriber is current be not carried on the business of described HSDPA channel time, judge that whether the current network rate of described mobile subscriber is higher than described intersystem handover rate threshold further, and higher than during described intersystem handover rate threshold, the network rate of described mobile subscriber is down within described intersystem handover rate threshold at the network rate that described mobile subscriber is current.
8. RNC as claimed in claim 6, is characterized in that,
Described judge module, also for judging between the system whether Serving cell of described mobile subscriber is configured with co-space feedback system with coverage cell or macrocell;
If so, then described judge module indicates described mobile subscriber to be directly switch into described same coverage cell or described macrocell, to make the tangential described gsm system of described mobile subscriber;
If not, then described judge module continues to judge that described mobile subscriber is current and whether has service bearer in high-speed downlink packet access HSDPA channel.
9. RNC as claimed in claim 8, is characterized in that,
Described interface module, also for after the PS business of described mobile subscriber is set up, issue 2D Survey control according to network settings to described mobile subscriber, with make described mobile subscriber detect the signal of described Serving cell report 2D measurement report when being down to below threshold condition and initiate switch.
10. RNC as claimed in claim 9, is characterized in that, also comprise:
Stop module, during for receiving 2F measurement report before receiving described 3C measurement report, stop 3C measuring, and detect the 2D measurement report whether receiving described mobile subscriber and send.
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| CN201410514548.8A CN104284378B (en) | 2014-09-29 | 2014-09-29 | A kind of switching method and equipment |
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| CN201410514548.8A CN104284378B (en) | 2014-09-29 | 2014-09-29 | A kind of switching method and equipment |
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| CN104284378A true CN104284378A (en) | 2015-01-14 |
| CN104284378B CN104284378B (en) | 2018-03-02 |
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| CN105472639A (en) * | 2015-10-22 | 2016-04-06 | 杭州电子科技大学 | LTE handover optimization method based on power adjustment |
| CN108243472A (en) * | 2016-12-27 | 2018-07-03 | 中国移动通信集团浙江有限公司 | The different system reselecting methods of 2G to 4G and device |
| CN109391952A (en) * | 2017-08-07 | 2019-02-26 | 大唐移动通信设备有限公司 | Method, apparatus, electronic equipment and the storage medium of measuring configuration |
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| CN104284378B (en) | 2018-03-02 |
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