CN101185351B - Method for controlling macro diversity mode based on the user's QoS requirement difference - Google Patents
Method for controlling macro diversity mode based on the user's QoS requirement difference Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
Abstract
A method for controlling macro diversity mode based on the user's QoS requirement difference, the method is applicable to CDMA system, for real time service, it mainly based on the pilot strength measured by MS, and for the non-real time service, it mainly based on the pilot strength measured by MS and the downlink special transmitting power measured by BS. The method for controlling macro diversity according to the present invention is simply and adopts different controlling method for the service whose QoS is different.
Description
Technical field
The present invention relates to the control method of macro diversity mode in code division multiple access (Code Division Multiple Access) (hereinafter to be referred as CDMA) system, particularly based on the control method of the macro diversity mode of QoS of customer (Quality of Service) (hereinafter to be referred as Qos) demand difference.
Background technology
Mobile communication system experienced from frequency division, the time assign to three epoch that sign indicating number divides, what adopt in preceding two third-generation mobile communication systems all is direct-cut operation, and in 3-G (Generation Three mobile communication system), promptly adopted soft hand-off in the cdma system, and grand diversity has also obtained using widely.
The notion of diversity is can simplicity of explanation as follows: if the signal in radio propagation path has experienced the deep fading, and may still comprise stronger signal in another relatively independent path, therefore can in multipath signal, select two or more signals, the benefit of doing like this is it all has raising for the instantaneous signal-to-noise ratio and the average signal-to-noise ratio of receiving terminal, and can improve 20dB usually to 30dB.
Wherein, decline has two kinds, i.e. large scale decline and small scale decline.When the displacement of travelling carriage had only several wavelength, the characteristic of small scale decline was characterized by the degree of depth and the speed of amplitude fluctuation.These declines are that the reflection by near the complexity of the object travelling carriage causes.The small scale decline can cause Rayleigh (Rayleigh) decline of signal strength signal intensity in the small distance scope to distribute usually.In order to prevent the deep fading, can adopt the micro diversity technology to handle fast-changing signal.
The large scale decline is that the shadow region that is caused by the difference of surrounding environment landform and geography causes.In the overabundant yin shadow zone, the signal strength signal intensity that travelling carriage receives may be lower than the intensity when propagating in free space.Travelling carriage can be from improving the signal to noise ratio on the forward link in essence by selecting the not base station in the shadow region of signaling.Because the separation of the base station that business is provided of travelling carriage utilization is far away, thereby this is known as grand diversity.
Grand diversity is useful equally for base station receiver, and by using the antenna for base station of spatially fully separating, the antenna of receiving that signal is the strongest can be selected in the base station, thereby improves the signal quality of reverse link.
For the operation of grand diversity, wireless device is sought the pilot signal of the base station on the candidate list, and current this wireless device of not serving of this candidate list in cdma system.At first, the intensity of wireless device measurement pilot signals, for example utilize the received signal strength indicator of pilot signal to represent, when wireless device detects the pilot tone of sufficient intensity, wherein this pilot tone is relevant with the base station that is not assigned to this wireless device, and the pilot tone message that comprises the pilot signal measurement result is provided for base station controller; Utilize this pilot signal measurement result, base station controller is determined and will be given this wireless device from another service in base station channel allocation.If wireless device is assigned from more than a service in base station channel, then this wireless device is considered to be in macro diversity status.Within geographic coverage, when wireless device is mobile between cell, base station controller will exchange to another base station from the calling of a base station in real time, and this is called as handover.All base stations that are connected to given wireless device have defined the activity group of this wireless device, and control the update functions of this activity group, promptly estimate and upgrade activity group, in wireless device, survey and measure the strongest pilot tone by measuring process based on the pilot frequency intensity measuring result.The pilot frequency intensity value is focused in the pilot measurement reports, and this report is sent to base station controller afterwards; When the update functions of activity group is called, the base station the strongest and the most weak pilot frequency intensity that receives in the movable group is identified, if the difference between this strong and the most weak pilot frequency intensity is greater than the required value of system (being called movable group window in the context), then the most weak base station will be removed from this activity group; If the pilot frequency intensity that the base station receives within the window on the activity group threshold value, the short of size that exceeds movable group, then this base station just is added in this activity group window; If the size of movable group is filled, and if corresponding pilot signal strength be higher than the most weak base station, the most weak base station in the then movable group will be substituted by new base station.
Cdma system utilizes grand diversity to improve performance or quality that signal receives, and the grand diversity notion that is used for cdma system relates to the link from two or more whiles of two or more base stations, and wireless device and cell receiver use a plurality of parallel correlators simultaneously.Utilize the receiver of parallel correlator, allow the arrival in each path to be followed the tracks of independently, and the signal sum that they receive is by user's demodulation.When on each arrival decline being arranged, decline is independently, adjustable more reliable based on the signal sum.For the user under the situation of movement, have considerable cell and use grand diversity, in grand diversity process,, can use a plurality of equipment/resources of cellular basestation so because the user is connected with the base station by multilink.And after cdma system is designed, the element number of transceiver just is fixed, and downgoing channelized codes also is limited simultaneously, along with user's increase, the user who is under the grand diversity will consume hardware resource and Radio Resource in a large number, so macro diversity mode need be controlled effectively.
Summary of the invention
In view of above-mentioned, the purpose of this invention is to provide the control method that is applicable in the cdma system based on the macro diversity mode of user Qos demand difference.
The control method of the macro diversity mode based on user Qos demand difference of the present invention is the dynamic adjusting method that grand diversity is triggered thresholding, and wherein above-mentioned grand diversity triggers thresholding and comprises that grand diversity goes into to trigger thresholding and grand diversity removes to trigger thresholding.In addition, grand diversity of the present invention triggers real time business and the non-real-time service employing diverse ways of the dynamic adjustment of thresholding for cdma system.
,, then raise grand diversity and trigger thresholding if the signal that travelling carriage receives is fine mainly based on the pilot frequency intensity of moving table measuring for real time business, delaying is in the moment of macro diversity mode, to save Radio Resource; If the signal that travelling carriage receives is very poor, then reduce grand diversity and trigger thresholding, make travelling carriage be in macro diversity mode in advance as far as possible, switch in advance, avoid call drop.
For non-real-time service mainly based on the downlink dedicated transmitting power of the pilot frequency intensity and the base station measurement of moving table measuring.Thought based on the pilot frequency intensity of moving table measuring is: if the signal that travelling carriage receives is fine, then raises grand diversity and trigger thresholding; If the signal that travelling carriage receives is very poor, and also to satisfies the downlink dedicated transmitting power simultaneously and be lower than power threshold, current service transmission rate, then reduce grand diversity and trigger thresholding less than the speed threshold value.Thought based on the downlink dedicated transmitting power of base station measurement is: if the downlink dedicated transmitting power is higher, and current service transmission rate then raises grand diversity threshold more than or equal to the speed threshold value, avoids the two-forty non-real-time service to carry out soft handover as far as possible.
For achieving the above object, the control method of a kind of macro diversity mode based on user Qos demand difference of the present invention, be applicable to cdma system, it is characterized in that comprising the steps: for the macro diversity mode control method that real time business adopts based on the pilot frequency intensity of moving table measuring
Step 101: radio network controller (Radio Network Controller) (hereinafter to be referred as RNC) preestablishes grand diversity and goes into to trigger thresholding T
Add, grand diversity removes to trigger thresholding T
Drop, the lower limit T that thresholding is adjusted
MinWith upper limit T
MaxAnd adjustment step-length T
Step, wherein, must guarantee the upper limit T that above-mentioned thresholding is adjusted for the table tennis that prevents sub-district in the movable Groups List adds and deletion
Max〉=above-mentioned grand diversity goes into to trigger thresholding T
Add＞above-mentioned grand diversity removes to trigger thresholding T
DropThe lower limit T of 〉=above-mentioned thresholding adjustment
Min
Step 102: the activation pilot frequency intensity value T that above-mentioned RNC reports travelling carriage
PilotRemove to trigger thresholding T with above-mentioned grand diversity
DropGo into to trigger thresholding T with above-mentioned grand diversity
AddCompare, as the standard of gauge signal power, wherein above-mentioned grand diversity goes into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropAdjust simultaneously, specifically divide following two kinds of situations:
If above-mentioned activation pilot frequency intensity value T
PilotRemove to trigger thresholding T less than above-mentioned grand diversity
Drop, illustrate that current demand signal is second-rate, then above-mentioned grand diversity is gone into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropAll reduce and adjust step-length T
Step
If above-mentioned activation pilot frequency intensity value T
PilotGo into to trigger thresholding T greater than above-mentioned grand diversity
Add, illustrate that the current demand signal quality is better, then above-mentioned grand diversity is gone into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropAll raise and adjust step-length T
Step
For achieving the above object, another kind of the present invention is based on the control method of the macro diversity mode of user Qos demand difference, be applicable to cdma system, it is characterized in that comprising the steps: for the macro diversity mode control method that non-real-time service adopts based on the pilot frequency intensity of moving table measuring
Step 201:RNC preestablishes grand diversity and goes into to trigger thresholding T
Add, grand diversity removes to trigger thresholding T
Drop, the lower limit T that thresholding is adjusted
MinWith upper limit T
Max, adjust step-length T
Step, speed thresholding R
ThrAnd power threshold P
Thr, wherein, must guarantee the upper limit T that above-mentioned thresholding is adjusted for the table tennis that prevents sub-district in the movable Groups List adds and deletion
Max〉=above-mentioned grand diversity goes into to trigger thresholding T
Add＞above-mentioned grand diversity removes to trigger thresholding T
DropThe lower limit T of 〉=above-mentioned thresholding adjustment
Min
Step 202: the activation pilot frequency intensity value T that above-mentioned RNC reports travelling carriage
PilotRemove to trigger thresholding T with above-mentioned grand diversity
DropGo into to trigger thresholding T with above-mentioned grand diversity
AddCompare, as the standard of gauge signal power, wherein above-mentioned grand diversity goes into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropAdjust simultaneously, specifically divide following two kinds of situations:
If above-mentioned activation pilot frequency intensity value T
PilotRemove to trigger thresholding T less than above-mentioned grand diversity
Drop, illustrate that current demand signal is second-rate, also satisfy current service transmission rate R simultaneously
CurLess than above-mentioned speed thresholding R
ThrAnd downlink dedicated transmitting power P
CurLess than above-mentioned power threshold P
Thr, then above-mentioned grand diversity is gone into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropAll reduce and adjust step-length T
Step
If above-mentioned activation pilot frequency intensity value T
PilotGo into to trigger thresholding T greater than above-mentioned grand diversity
Add, illustrate that the current demand signal quality is better, then above-mentioned grand diversity is gone into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropAll raise and adjust step-length T
Step
For achieving the above object, another control method of the present invention based on the macro diversity mode of user Qos demand difference, be applicable to cdma system, it is characterized in that comprising the steps: for the macro diversity mode control method that non-real-time service adopts based on the downlink dedicated transmitting power of base station measurement
Step 301:RNC preestablishes grand diversity and goes into to trigger thresholding T
Add, grand diversity removes to trigger thresholding T
Drop, the lower limit T that thresholding is adjusted
MinWith upper limit T
Max, adjust step-length T
Step, speed thresholding R
ThrAnd power threshold P
Thr, wherein, must guarantee the upper limit T that above-mentioned thresholding is adjusted for the table tennis that prevents sub-district in the movable Groups List adds and deletion
Max〉=above-mentioned grand diversity goes into to trigger thresholding T
Add＞above-mentioned grand diversity removes to trigger thresholding T
DropThe lower limit T of 〉=above-mentioned thresholding adjustment
Min
Step 302: the downlink dedicated transmitting power P that above-mentioned RNC reports the base station
CurWith above-mentioned power threshold P
ThrCompare, if above-mentioned downlink dedicated transmitting power P
CurMore than or equal to above-mentioned power threshold P
Thr, and current service transmission rate R
CurMore than or equal to above-mentioned speed thresholding R
Thr, then above-mentioned grand diversity is gone into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropAll raise and adjust step-length T
Step, wherein above-mentioned grand diversity goes into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropAdjust simultaneously.
In actual applications, in order to prevent to be in harmonious proportion hocketing of reducing, this method comprises also counter or timer is set that if counter wherein is set, then above-mentioned RNC just goes into to trigger thresholding T to above-mentioned grand diversity when only satisfying above-mentioned trigger condition continuously in the number of times of this counter regulation
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropRaise or reduce; If timer is set, then from this timer begin to start to overtime after, above-mentioned RNC has only when satisfying above-mentioned trigger condition always and just above-mentioned grand diversity is gone into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropRaise or reduce.
Wherein, above-mentioned grand diversity goes into to trigger thresholding T
AddBe meant if above-mentioned travelling carriage monitors the pilot frequency intensity of the sub-district in the movable Groups List and be higher than this grand diversity and go into to trigger thresholding T
Add, then this sub-district is joined in the above-mentioned movable Groups List; Above-mentioned grand diversity removes to trigger thresholding T
DropBe meant if above-mentioned travelling carriage monitors the pilot frequency intensity of the sub-district in the above-mentioned movable Groups List and be lower than this grand diversity and remove to trigger thresholding T
Drop, then this sub-district is deleted from above-mentioned movable Groups List.
Above-mentioned grand diversity goes into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropInitial setting up generally determine by the network planning or emulation.
The lower limit T that above-mentioned thresholding is adjusted
MinWith upper limit T
MaxCan obtain by emulation or actual test by the permission number of selecting pilot tone after comprehensive.Wherein, if the lower limit T that above-mentioned thresholding is adjusted
MinWith upper limit T
MaxBe provided with too smallly, must cause the too much back pilot tone of selecting easily, influence the search of other pilot tone adjacent area, cause pilot pollution easily; If the lower limit T that above-mentioned thresholding is adjusted
MinWith upper limit T
MaxBe provided with too highly,, can influence the adding of strong pilot tone, easily call drop when subscriber equipment (User Equipment) (hereinafter to be referred as UE) when moving quickly into cell edge.
Above-mentioned adjustment step-length T
StepMainly relevant with the situation of sub-district covering and wireless fading channel, wherein above-mentioned grand diversity goes into to trigger thresholding T
AddThe downward modulation that go up to be in harmonious proportion can adopt identical adjustment step-length T
StepOr different adjustment step-length T
StepWherein, raise above-mentioned grand diversity and go into to trigger thresholding T
AddThe switching instant of can delaying should be more careful, can adjust step-length T
StepBe provided with lessly relatively; Reduce above-mentioned grand diversity and go into to trigger thresholding T
AddCan shift to an earlier date switching instant,, wireless fading channel less at cell coverage area is relatively poor wishes that the amplitude of thresholding downward modulation is very fast, can adjust step-length T
StepBe provided with relatively largely.Suggestion can will be adjusted step-length T
StepBe set to the value of 0.1dBm～1.0dBm, also different values can be set according to the difference of business simultaneously.
Above-mentioned power threshold P
ThrWith speed thresholding R
ThrIn system's running, can adjust according to the power resource and the sign indicating number resource dynamic of adjacent area.If the resource of adjacent area has very big surplus, then can suitably raise this power threshold P
ThrWith speed thresholding R
ThrIf the resource of adjacent area is less, then can suitably reduce this power threshold P
ThrWith speed thresholding R
ThrPower threshold P wherein
ThrCan be arranged to the relative percentage of Radio Link maximum transmission power, for example be 80%; Speed thresholding R
ThrInitially can be arranged to 64kbps or other value.
The control method of macro diversity mode of the present invention is simple, and takes different control methods at the different business of Qos.Be under the bad situation of cell edge, received signal at travelling carriage, dynamically adjust the triggering thresholding of macro diversity mode, make it be in macro diversity mode as early as possible, with opportunity of handover in advance, avoid call drop.For high speed, the higher non-real-time service of transmitting power, dynamically adjust the triggering thresholding of macro diversity mode simultaneously, avoid the bigger non-real-time service of resource loss to carry out soft handover as far as possible, saved Radio Resource effectively, reduced the mortality of soft handover simultaneously.And the method for the invention grand diversity when adjusting is gone into to trigger thresholding and grand diversity and is removed to trigger thresholding and adjust simultaneously, can guarantee that like this these two thresholdings keep certain difference, help avoiding occurring soft handover and add the ping-pong that goes with soft handover, simultaneously common guarantee the purpose of adjusting, as raise and guarantee that difficulty adds easily and go that downward modulation guarantees that Yi Jianan goes.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and cooperation Figure of description are described in detail below.
Description of drawings
Fig. 1 is the schematic diagrames of two UE when being in non-macro diversity status.
Fig. 2 is the dynamic adjustment flow chart that the grand diversity of real time business of the present invention triggers thresholding.
Fig. 3 is the flow chart that the grand diversity of non-real-time service of the present invention triggers the dynamic adjusting method 1 of thresholding.
Fig. 4 is the flow chart that the grand diversity of non-real-time service of the present invention triggers the dynamic adjusting method 2 of thresholding.
Embodiment
Be described in further detail below in conjunction with the concrete enforcement of accompanying drawing technical scheme of the present invention.
Exist multiple business in cdma system, speech business, video telephone, Streaming Media download, web page browsing, video request program, receiving and dispatching mail, file download etc. are for example arranged, these business have nothing in common with each other to the requirement of time delay.According to the sensitiveness of business, business can be divided into two classes substantially: real time business and non-real-time service to time delay.Because professional own, real time business is very obvious to the subjective feeling of call drop; And for non-real-time service, even call drop, business also can rebulid automatically, user's subjective feeling is not obvious, and non-real-time service is owing to have some paroxysmal characteristics, data traffic instability, might be also very big at the flow of cell edge, for keeping its Qos, the power resource of consumption and sign indicating number resource all can be higher, if be under the macro diversity mode, at least need to consume the resource of twice, if the load of adjacent area is higher, enough resources can not be provided, soft handover will be easy to failure.For real time business, be in pilot frequency intensity that cell edge receives when low at travelling carriage, its hope can be earlier joins other strong signal cell in the Active Set, promptly is in macro diversity mode as early as possible; And for non-real-time service, consider from the angle that resource is used, can make it be in macro diversity mode a little later.
Fig. 1 is the schematic diagrames of two UE when being in non-macro diversity status.As shown in Figure 1, wireless device 1 (hereinafter to be referred as UE1) and wireless device 2 (hereinafter to be referred as UE2) are in respectively among sub-district 1 (Cell1) and sub-district 2 (Cell2), have only a wireless links to be connected with base station 2 (hereinafter to be referred as NodeB2) with base station 1 (hereinafter to be referred as NodeB1) respectively in following provisional capital, they all are not in macro diversity mode, and move to cell edge gradually.NodeB1 and NodeB2 belong to same RNC.
If what UE1 used is real time business, and UE2 uses is non-real-time service, because how the Qos demand difference of these two business takes diverse ways to carry out the control of macro diversity mode, is the problem to be solved in the present invention.
The control method of macro diversity mode set forth in the present invention is all carried out in RNC.
Fig. 2 is the method flow diagram that the grand diversity trigger gate restraint attitude of real time business of the present invention is adjusted, the pilot frequency intensity that it is mainly measured based on UE.As shown in Figure 2, it comprises the steps:
Step 201: at first RNC carries out the initialization of parameter, comprises that grand diversity goes into to trigger thresholding T
Add, grand diversity removes to trigger thresholding T
Drop, the lower limit T that adjusts of thresholding
MinWith upper limit T
MaxAnd adjustment step-length T
StepThe setting of parameter;
Step 202:UE carries out the measurement and the reporting measurement reports of pilot frequency intensity;
Step 203:RNC judges activation pilot frequency intensity value T
PilotWhether remove to trigger thresholding T less than above-mentioned grand diversity
DropIf then execution in step 204, otherwise execution in step 205;
Step 204:RNC judges that above-mentioned grand diversity removes to trigger thresholding T
DropStep-length T is adjusted in downward modulation
StepAfter the lower limit T that whether adjusts more than or equal to above-mentioned thresholding
MinIf then execution in step 206, otherwise execution in step 207;
Step 205:RNC judges above-mentioned activation pilot frequency intensity value T
PilotWhether go into to trigger thresholding T greater than above-mentioned grand diversity
AddIf then execution in step 208, otherwise execution in step 207;
Step 206:RNC goes into to trigger thresholding T with above-mentioned grand diversity
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropStep-length T is adjusted in downward modulation respectively
Step
Step 207:RNC does not adjust;
Step 208:RNC judges that above-mentioned grand diversity goes into to trigger thresholding T
AddRaise and adjust step-length T
StepAfter the upper limit T that whether adjusts smaller or equal to above-mentioned thresholding
MaxIf then execution in step 209, otherwise execution in step 207;
Step 209:RNC goes into to trigger thresholding T with above-mentioned grand diversity
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropRaise respectively and adjust step-length T
Step
Fig. 3 is the flow chart of a kind of method of adjusting of the grand diversity trigger gate restraint attitude of non-real-time service of the present invention, and it is mainly triggered by the pilot frequency intensity that UE measures.As shown in Figure 3, it comprises the steps:
Step 301: at first RNC carries out the initialization of parameter, comprises that grand diversity goes into to trigger thresholding T
Add, grand diversity removes to trigger thresholding T
Drop, the lower limit T that adjusts of thresholding
MinWith upper limit T
Max, adjust step-length T
Step, speed thresholding R
ThrAnd power threshold P
ThrThe setting of parameter;
Step 302:UE carries out the measurement and the reporting measurement reports of pilot frequency intensity, and the measurement and the reporting measurement reports of downlink dedicated transmitting power carried out in the base station;
Step 303:RNC judges activation pilot frequency intensity value T
PilotWhether remove to trigger thresholding T less than above-mentioned grand diversity
DropIf then execution in step 304, otherwise execution in step 308;
Step 304:RNC judges current service transmission rate R
CurWhether less than above-mentioned speed thresholding R
ThrAnd downlink dedicated transmitting power P
CurWhether less than power threshold P
ThrIf then execution in step 305, otherwise execution in step 307;
Step 305:RNC judges that above-mentioned grand diversity removes to trigger thresholding T
DropStep-length T is adjusted in downward modulation
StepAfter the lower limit T that whether adjusts more than or equal to above-mentioned thresholding
MinIf then execution in step 306, otherwise execution in step 307;
Step 306:RNC goes into to trigger thresholding T with above-mentioned grand diversity
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropStep-length T is adjusted in downward modulation respectively
Step
Step 307:RNC does not adjust;
Step 308:RNC judges above-mentioned activation pilot frequency intensity value T
PilotWhether go into to trigger thresholding T greater than above-mentioned grand diversity
AddIf then execution in step 309, otherwise execution in step 307;
Step 309:RNC judges that above-mentioned grand diversity goes into to trigger thresholding T
AddRaise and adjust step-length T
StepAfter the upper limit T that whether adjusts smaller or equal to above-mentioned thresholding
MaxIf then execution in step 310, otherwise execution in step 307;
Step 310:RNC goes into to trigger thresholding T with above-mentioned grand diversity
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropRaise respectively and adjust step-length T
Step
Fig. 4 is the flow chart of the another kind of method adjusted of the grand diversity trigger gate restraint attitude of non-real-time service, and it is mainly triggered by the downlink dedicated transmitting power of base station measurement.As shown in Figure 4, it comprises the steps:
Step 401: at first RNC carries out the initialization of parameter, comprises that grand diversity goes into to trigger thresholding T
Add, grand diversity removes to trigger thresholding T
Drop, the lower limit T that adjusts of thresholding
MinWith upper limit T
Max, adjust step-length T
Step, speed thresholding R
ThrAnd power threshold P
ThrThe setting of parameter;
Step 402: the measurement and the reporting measurement reports of downlink dedicated transmitting power carried out in the base station;
Step 403:RNC judges downlink dedicated transmitting power P
CurWhether more than or equal to above-mentioned power threshold P
ThrIf then execution in step 404, otherwise execution in step 407;
Step 404:RNC judges current service transmission rate R
CurWhether more than or equal to speed thresholding R
ThrIf then execution in step 405, otherwise execution in step 407;
Step 405:RNC judges that above-mentioned grand diversity goes into to trigger thresholding T
AddRaise and adjust step-length T
StepAfter the upper limit T that whether adjusts smaller or equal to above-mentioned thresholding
MaxIf then execution in step 406, otherwise execution in step 407;
Step 406:RNC goes into to trigger thresholding T with above-mentioned grand diversity
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropRaise respectively and adjust step-length T
Step
Step 407:RNC does not adjust.
The present invention has set forth the control method based on the macro diversity mode of user Qos demand difference, comprises that the grand diversity of the downlink dedicated transmitting power of the pilot frequency intensity measured based on UE and base station measurement triggers the dynamic adjustment of thresholding.
When the pilot frequency intensity of measuring was low, real time business made it be in macro diversity mode as early as possible owing to the having relatively high expectations of Qos, reduce grand diversity and trigger thresholding, with opportunity of handover in advance, avoid call drop; And non-real-time service to Qos require relatively lowly, satisfy lower, the current service transmission rate of downlink dedicated transmitting power simultaneously hour, reduce grand diversity and trigger thresholding.When the pilot frequency intensity of measuring is higher can guarantee current Qos the time, raise grand diversity and trigger thresholding, delaying is in macro diversity mode constantly, helps saving the adjacent area Radio Resource.
When the UE that uses non-real-time service moves to cell edge, when higher the and current service transmission rate of downlink dedicated transmitting power is big, raise grand diversity and trigger thresholding, avoid the bigger non-real-time service of resource loss to carry out soft handover as far as possible, save Radio Resource effectively, reduced the mortality of soft handover simultaneously.
More than describe operation principle of the present invention in detail, but the example of this visualization of just lifting for the ease of understanding should not be considered to be limitation of the scope of the invention.Equally, according to the description of technical scheme of the present invention and preferred embodiment thereof, can make various possible being equal to and change or replacement, and all these changes or replacement all should belong to the protection range of claim of the present invention.
Claims (12)
1. based on the control method of the macro diversity mode of user's QoS requirement difference, be applicable to code division multiple access system, it is characterized in that comprising the steps: for the macro diversity mode control method that real time business adopts based on the pilot frequency intensity of moving table measuring
Step 101: radio network controller preestablishes grand diversity and goes into to trigger thresholding T
Add, grand diversity removes to trigger thresholding T
Drop, the lower limit T that thresholding is adjusted
MinWith upper limit T
MaxAnd adjustment step-length T
Step, the upper limit T that wherein above-mentioned thresholding is adjusted
Max〉=above-mentioned grand diversity goes into to trigger thresholding T
Add＞above-mentioned grand diversity removes to trigger thresholding T
DropThe lower limit T of 〉=above-mentioned thresholding adjustment
Min
Step 102: the activation pilot frequency intensity value T that above-mentioned radio network controller reports travelling carriage
PilotRemove to trigger thresholding T with above-mentioned grand diversity
DropGo into to trigger thresholding T with above-mentioned grand diversity
AddCompare, wherein above-mentioned grand diversity goes into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropAdjust simultaneously:
If satisfy trigger condition one, then above-mentioned grand diversity is gone into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropAll reduce and adjust step-length T
Step, above-mentioned trigger condition one is: above-mentioned activation pilot frequency intensity value T
PilotRemove to trigger thresholding T less than above-mentioned grand diversity
Drop, and above-mentioned grand diversity removes to trigger thresholding T
DropWith above-mentioned adjustment step-length T
StepThe lower limit T that adjusts more than or equal to above-mentioned thresholding of difference
Min
If satisfy trigger condition two, then above-mentioned grand diversity is gone into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropAll raise and adjust step-length T
Step, above-mentioned trigger condition two is: above-mentioned activation pilot frequency intensity value T
PilotGo into to trigger thresholding T greater than above-mentioned grand diversity
Add, and above-mentioned grand diversity goes into to trigger thresholding T
AddWith above-mentioned adjustment step-length T
StepThe upper limit T that sum is adjusted smaller or equal to above-mentioned thresholding
Max
2. method according to claim 1 is characterized in that also comprising counter or timer are set, wherein
If counter is set, then above-mentioned radio network controller only satisfies above-mentioned trigger condition two continuously in the number of times of this counter regulation or above-mentioned trigger condition just goes into to trigger thresholding T to above-mentioned grand diversity for the moment
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropRaise or reduce;
If timer is set, then from this timer begin to start to overtime after, above-mentioned radio network controller has only and satisfies above-mentioned trigger condition two or above-mentioned trigger condition always and for the moment just above-mentioned grand diversity is gone into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropRaise or reduce.
3. method according to claim 2 is characterized in that
Above-mentioned grand diversity goes into to trigger thresholding T
AddBe meant if above-mentioned travelling carriage monitors the pilot frequency intensity of the sub-district in the movable Groups List and be higher than this grand diversity and go into to trigger thresholding T
Add, then this sub-district is joined in the above-mentioned movable Groups List;
Above-mentioned grand diversity removes to trigger thresholding T
DropBe meant if above-mentioned travelling carriage monitors the pilot frequency intensity of the sub-district in the above-mentioned movable Groups List and be lower than this grand diversity and remove to trigger thresholding T
Drop, then this sub-district is deleted from above-mentioned movable Groups List.
4. method according to claim 2 is characterized in that
Above-mentioned grand diversity goes into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropInitial setting up determine by the network planning or emulation;
The lower limit T that above-mentioned thresholding is adjusted
MinWith upper limit T
MaxObtain by emulation or actual test by the permission number of selecting pilot tone after comprehensive;
Above-mentioned adjustment step-length T
StepRelevant with the situation of sub-district covering and wireless fading channel, wherein above-mentioned grand diversity goes into to trigger thresholding T
AddThe downward modulation that go up to be in harmonious proportion adopt identical adjustment step-length T
StepOr different adjustment step-length T
Step
5. based on the control method of the macro diversity mode of user's QoS requirement difference, be applicable to code division multiple access system, it is characterized in that comprising the steps: for the macro diversity mode control method that non-real-time service adopts based on the pilot frequency intensity of moving table measuring
Step 201: radio network controller preestablishes grand diversity and goes into to trigger thresholding T
Add, grand diversity removes to trigger thresholding T
Drop, the lower limit T that thresholding is adjusted
MinWith upper limit T
Max, adjust step-length T
Step, speed thresholding R
ThrAnd power threshold R
Thr, the upper limit T that wherein above-mentioned thresholding is adjusted
Max〉=above-mentioned grand diversity goes into to trigger thresholding T
Add＞above-mentioned grand diversity removes to trigger thresholding T
DropThe lower limit T of 〉=above-mentioned thresholding adjustment
Min
Step 202: the activation pilot frequency intensity value T that above-mentioned radio network controller reports travelling carriage
PilotRemove to trigger thresholding T with above-mentioned grand diversity
DropGo into to trigger thresholding T with above-mentioned grand diversity
AddCompare, wherein above-mentioned grand diversity goes into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropAdjust simultaneously:
If satisfy trigger condition one, then above-mentioned grand diversity is gone into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropAll reduce and adjust step-length T
Step, trigger condition one comprises: above-mentioned activation pilot frequency intensity value T
PilotRemove to trigger thresholding T less than above-mentioned grand diversity
Drop, simultaneously current service transmission rate R
CurLess than above-mentioned speed thresholding R
ThrAnd downlink dedicated transmitting power P
CurLess than above-mentioned power threshold P
Thr, and above-mentioned grand diversity removes to trigger thresholding T
DropWith above-mentioned adjustment step-length T
StepThe lower limit T that adjusts more than or equal to above-mentioned thresholding of difference
Min
If satisfy trigger condition two, then above-mentioned grand diversity is gone into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropAll raise and adjust step-length T
Step, above-mentioned trigger condition two is: above-mentioned activation pilot frequency intensity value T
PilotGo into to trigger thresholding T greater than above-mentioned grand diversity
Add, and above-mentioned grand diversity goes into to trigger thresholding T
AddWith above-mentioned adjustment step-length T
StepThe upper limit T that sum is adjusted smaller or equal to above-mentioned thresholding
Max
6. method according to claim 5 is characterized in that also comprising counter or timer are set, wherein
If counter is set, then above-mentioned radio network controller only satisfies above-mentioned trigger condition two continuously in the number of times of this counter regulation or above-mentioned trigger condition just goes into to trigger thresholding T to above-mentioned grand diversity for the moment
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropRaise or reduce;
If timer is set, then from this timer begin to start to overtime after, above-mentioned radio network controller has only and satisfies above-mentioned trigger condition two or above-mentioned trigger condition always and for the moment just above-mentioned grand diversity is gone into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropRaise or reduce.
7. method according to claim 6 is characterized in that
Above-mentioned grand diversity goes into to trigger thresholding T
AddBe meant if above-mentioned travelling carriage monitors the pilot frequency intensity of the sub-district in the movable Groups List and be higher than this grand diversity and go into to trigger thresholding T
Add, then this sub-district is joined in the above-mentioned movable Groups List;
Above-mentioned grand diversity removes to trigger thresholding T
DropBe meant if above-mentioned travelling carriage monitors the pilot frequency intensity of the sub-district in the above-mentioned movable Groups List and be lower than this grand diversity and remove to trigger thresholding T
Drop, then this sub-district is deleted from above-mentioned movable Groups List.
8. method according to claim 6 is characterized in that
Above-mentioned grand diversity goes into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropInitial setting up determine by the network planning or emulation;
The lower limit T that above-mentioned thresholding is adjusted
MinWith upper limit T
MaxObtain by emulation or actual test by the permission number of selecting pilot tone after comprehensive;
Above-mentioned adjustment step-length T
StepRelevant with the situation of sub-district covering and wireless fading channel, wherein above-mentioned grand diversity goes into to trigger thresholding T
AddThe downward modulation that go up to be in harmonious proportion adopt identical adjustment step-length T
StepOr different adjustment step-length T
Step
Above-mentioned power threshold P
ThrWith speed thresholding R
ThrPower resource and sign indicating number resource dynamic according to the adjacent area in system's running are adjusted.
9. based on the control method of the macro diversity mode of user's QoS requirement difference, be applicable to code division multiple access system, it is characterized in that comprising the steps: for the macro diversity mode control method that non-real-time service adopts based on the downlink dedicated transmitting power of base station measurement
Step 301: radio network controller preestablishes grand diversity and goes into to trigger thresholding T
Add, grand diversity removes to trigger thresholding T
Drop, the lower limit T that thresholding is adjusted
MinWith upper limit T
Max, adjust step-length T
Step, speed thresholding R
ThrAnd power threshold P
Thr, the upper limit T that wherein above-mentioned thresholding is adjusted
Max〉=above-mentioned grand diversity goes into to trigger thresholding T
Add＞above-mentioned grand diversity removes to trigger thresholding T
DropThe lower limit T of 〉=above-mentioned thresholding adjustment
Min
Step 302: the downlink dedicated transmitting power P that above-mentioned radio network controller reports the base station
CurWith above-mentioned power threshold P
ThrCompare,, then above-mentioned grand diversity is gone into to trigger thresholding T if satisfy trigger condition
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropAll raise and adjust step-length T
Step, wherein above-mentioned grand diversity goes into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropAdjust simultaneously, above-mentioned trigger condition is: above-mentioned downlink dedicated transmitting power P
CurMore than or equal to above-mentioned power threshold P
Thr, and current service transmission rate R
CurMore than or equal to above-mentioned speed thresholding R
Thr, above-mentioned grand diversity goes into to trigger thresholding T simultaneously
AddWith above-mentioned adjustment step-length T
StepThe upper limit T that sum is adjusted smaller or equal to above-mentioned thresholding
Max
10. method according to claim 9 is characterized in that also comprising counter or timer are set, wherein
If counter is set, when only satisfying above-mentioned trigger condition continuously in the number of times of this counter regulation, then above-mentioned radio network controller just above-mentioned grand diversity is gone into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropRaise;
If timer is set, then from this timer begin to start to overtime after, above-mentioned radio network controller has only when satisfying above-mentioned trigger condition always just goes into to trigger thresholding T to above-mentioned grand diversity
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropRaise.
11. method according to claim 10 is characterized in that
Above-mentioned grand diversity goes into to trigger thresholding T
AddBe meant if above-mentioned travelling carriage monitors the pilot frequency intensity of the sub-district in the movable Groups List and be higher than this grand diversity and go into to trigger thresholding T
Add, then this sub-district is joined in the above-mentioned movable Groups List;
Above-mentioned grand diversity removes to trigger thresholding T
DropBe meant if above-mentioned travelling carriage monitors the pilot frequency intensity of the sub-district in the above-mentioned movable Groups List and be lower than this grand diversity and remove to trigger thresholding T
Drop, then this sub-district is deleted from above-mentioned movable Groups List.
12. method according to claim 10 is characterized in that
Above-mentioned grand diversity goes into to trigger thresholding T
AddRemove to trigger thresholding T with above-mentioned grand diversity
DropInitial setting up determine by the network planning or emulation;
The lower limit T that above-mentioned thresholding is adjusted
MinWith upper limit T
MaxObtain by emulation or actual test by the permission number of selecting pilot tone after comprehensive;
Above-mentioned adjustment step-length T
StepRelevant with the situation of sub-district covering and wireless fading channel, wherein above-mentioned grand diversity goes into to trigger thresholding T
AddRise adopt identical adjustment step-length T
StepOr different adjustment step-length T
Step
Above-mentioned power threshold P
ThrWith speed thresholding R
ThrPower resource and sign indicating number resource dynamic according to the adjacent area in system's running are adjusted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2005/001706 WO2007045120A1 (en) | 2005-10-18 | 2005-10-18 | A METHOD FOR CONTROLLING MACRO DIVERSITY MODE BASED ON THE USER’S QoS REQUIREMENT DIFFERENCE |
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| Publication Number | Publication Date |
|---|---|
| CN101185351A CN101185351A (en) | 2008-05-21 |
| CN101185351B true CN101185351B (en) | 2010-10-13 |
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| CN2005800499396A Expired - Fee Related CN101185351B (en) | 2005-10-18 | 2005-10-18 | Method for controlling macro diversity mode based on the user's QoS requirement difference |
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| Country | Link |
|---|---|
| CN (1) | CN101185351B (en) |
| WO (1) | WO2007045120A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364825B (en) | 2007-08-10 | 2012-05-30 | 华为技术有限公司 | Macrodiversity incorporating method, system, base station and user equipment |
| CN101730128B (en) * | 2008-10-22 | 2012-10-10 | 中兴通讯股份有限公司 | Method and device for selecting resource processing mode |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324195A (en) * | 2000-05-17 | 2001-11-28 | 阿尔卡塔尔公司 | Method for regulating transmission power of base station using macro diversity mode |
| CN1355624A (en) * | 2000-11-23 | 2002-06-26 | 华为技术有限公司 | Macrodiversity method in CDMA communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7623477B2 (en) * | 2002-05-06 | 2009-11-24 | Qualcomm, Incorporated | Methods and apparatus for downlink macro-diversity in cellular networks |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324195A (en) * | 2000-05-17 | 2001-11-28 | 阿尔卡塔尔公司 | Method for regulating transmission power of base station using macro diversity mode |
| CN1355624A (en) * | 2000-11-23 | 2002-06-26 | 华为技术有限公司 | Macrodiversity method in CDMA communication system |
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| Publication number | Publication date |
|---|---|
| CN101185351A (en) | 2008-05-21 |
| WO2007045120A1 (en) | 2007-04-26 |
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