CN1901392A - Data business speed dynamic regulating method based on covering - Google Patents
Data business speed dynamic regulating method based on covering Download PDFInfo
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- CN1901392A CN1901392A CN 200610061723 CN200610061723A CN1901392A CN 1901392 A CN1901392 A CN 1901392A CN 200610061723 CN200610061723 CN 200610061723 CN 200610061723 A CN200610061723 A CN 200610061723A CN 1901392 A CN1901392 A CN 1901392A
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Abstract
This invention provides a method for dynamically adjusting data service rate based on overlay including the following steps: 1, setting up a corresponding relation list of the maximum emission power of the service kind and pilot Ec/Io based on route test after finishing overlay adjustment of local areas, 2, determining adjustment level strategy of the rate and determining the Ec/Io threshold for each rate service, 3, sending measurement control information based on the matched service rate when the service sets up, 4, when a UE triggers said Ec/Io threshold at a rate, the trigger event is reported, 5, the system regulates the rate according to the triggered event and level reported by the UE and upgrades the measurement control used by said UE.
Description
Technical field
The invention belongs to wireless communication technology field, particularly based on the method for adjustment of the data service rate that covers.
Background technology
The data service rate of WCDMA system support comprises: 8kbps, 16kbps, 32kbps, 64kbps, 128kbps, 144kbps, 256kbps, 384kbps, 2048kbps etc.Speed is identical, and is far away more apart from the base station, and the system resource of consumption is big more.Distance is identical, and speed is big more, and the system resource of consumption is big more.In order to optimize radio-resource-configuration as much as possible, the network of a reality usually adopts speed big more, the covering method that the scope of covering is more little.
So just brought a problem, the user is moving in the sub-district at any time, the data service of a high speed is in the cell edge moving process, in case exceeded the scope that this speed covered, system resource will occur can not meet the demands, professional block error rate BLER value sharply raises, and data transmission performance descends, even call drop.
Usually data service has the demand of big speed, and different speed has different coverages in the network planning, and particularly two-forty usually can not reach all standing of sub-district.Therefore, when the data service with high rate data transmission can not be supported owing to transmit power limited, the stability of link just is on the hazard, and therefore necessary situation according to transmitting power is dynamically adjusted the channel width of BE (data service), to guarantee link stability.In the network planning, the demand of minimum-rate coverage is arranged usually, just can satisfy the minimum-rate bandwidth of service stability at cell edge.In network coverage, can not cause the power limited state usually under this speed.
Prior art is main according to above-mentioned thought, (see 3Gpp agreement 25.433 by the E chain of events, the E incident shows that measuring object surpasses or is lower than default thresholding) monitor downlink dedicated channels sign indicating number transmitting power, in case surpassing thresholding triggering Ea incident, downlink dedicated channels sign indicating number transmitting power (sees 3Gpp agreement 25.433, the Ea incident shows that measuring object surpasses default thresholding), illustrate that current power can not satisfy present band width service quality, dynamically adjust service bandwidth then, select low first-rate bandwidth to reshuffle, from reaching the requirement of satisfying link stability; Adopt timer regularly to attempt rate recovery after the speed adjustment.In case timer expiry if current power does not trigger the Ea incident, then carries out the adjustment that bandwidth is recovered.If current power has still triggered the Ea thresholding, illustrate that then the user still at cell edge, can't satisfy the demand of raising speed rate, will continue to maintain all standing speed this moment.
Adopt descending sign indicating number transmitting power to judge whether link is stable very directly perceived, but can not reflect actual link stable case exactly.In laboratory tests and in some commercial bureaus, not as requested desired value convergence of the downlink outer loop power control of finding some subscriber equipment (UE), require descending BLER (Block Error Rate) to converge to 6% as network side, but actual descending BLER has only 1% even lower, so just has a problem.Because descending BLER value is very low, the actual downstream power that needs is very big, usually can surpass the above-mentioned measurement thresholding of judging that the sign indicating number transmitting power is whether limited and dispose, makes the Radio Link of an operate as normal often be in the power limited state.If enter constrained state, just carry out the speed adjustment, speed is reduced, can make this user can't enjoy high rate services all the time.
In addition, for the rate recovery process, there is blindly boosting velocity procedure.After user rate was lowered to all standing speed, timer started, and when overtime, system only can obtain the down transmitting power current bandwidth under, and if do not know needed down transmitting power behind the rate recovery.Therefore behind system's trial rate recovery, link is in the power limited state probably once more, sometimes even cause call drop; Equally,,, can carry out the adjustment of higher rate fully, and, still maintain low rate this moment, bring user satisfaction to descend because timer is not overtime yet if environment recovers if in timer time.
Summary of the invention
The objective of the invention is to, provide a kind of based on the data business speed dynamic regulating method that covers, it is outer too high not restrain the descending power value of demand that causes with the power control of solution UE downlink outer loop, the problem of timer blindness raising speed when causing unnecessary reduction of speed adjustment and rate recovery.
For reaching above-mentioned purpose, the present invention adopts following technical scheme:
For ease of understanding technological thought of the present invention, before describing technical solution of the present invention, concise and to the point earlier WCDMA data service transmitting power and the covering relation described.
In general, the needed down transmitting power of a kind of business is relevant with place cell channel environment and load level.Following derivation is arranged:
At first, following predefine is arranged:
(Ec/Io) cpich: Common Pilot Channel PCPICH Ec/Io;
CPICH_RSCP: Common Pilot Channel PCPICH RSCP;
PtxTotal: cell downlink carrier transmit power;
PtxDLPower: user's downlink dedicated channels transmitting power;
(Eb/No) dl:UE carries out the required descending Eb/No of this business (comprising that QOS requires);
L: link load;
UE_RSSI:UE receives the gross power in the bandwidth;
Iown:UE receives this cell power in the bandwidth;
Ioth:UE receives other the adjacent cell power in the bandwidth;
Pn:UE receives noise power in the bandwidth (comprise environment with device interior);
Prx:UE receives the power of the dedicated channel in the bandwidth;
R: service rate;
The W:3.84M bandwidth;
CPICH_Tx_Power: the pilot transmit power of sub-district;
A: the cell orthogonal factor is 1 during quadrature all;
For the Ec/No of Common Pilot Channel PCPICH, following derivation is arranged:
(Ec/Io) cpich=CPICH_RSCP/UE_RSSI formula (1)
CPICH_RSCP=CPICH_Tx_Power*L formula (2)
UE_RSSI=Iown+Pn+Ioth formula (3)
Iown=PtxTotal*L formula (4)
Formula (2), (3), (4) are brought into (1) and are obtained,
(Ec/Io) cpich=CPICH_Tx_Power/ (PtxTotal+[Pn+Ioth]/L) formula (5)
For the descending Eb/No of Traffic Channel, following derivation is arranged:
(Eb/No) dl=[Prx*W/R]/[Iown* (1-a)+Ioth+Pn]; Formula (6)
Prx=PtxDLPower*L formula (7)
Bring formula (3), (4), (5), (7) into formula (6) and obtain,
(Ec/No)dl＝PtxDLPower*L/[CPICH_Tx_Power*L/(Ec/Io)cpich-a*Ptxtotal*L]
Formula (8)
Just final formula:
PtxDLPower＝R/W*(Eb/No)dl*[CPICH_Tx_Power/(Ec/Io)cpich-a*Ptxtotal]
Formula (9)
For formula (9), the cell channel environment has determined the orthogonalization factor, and network load level is represented Ptxtotal, and type of service and service quality (Qos) demand has determined Eb/No.From formula as can be seen, under certain cell channel environment, under certain load level, certain professional maximum downstream transmitting power, coverage just, corresponding certain pilot tone Ec/Io; If surpass this Ec/Io, professional required transmitting power just can not be satisfied, and quality of service will descend, even call drop.In case turn back within this Ec/Io outside the sub-district, quality of service just can be ensured.
In general network planning process, can be according to actual drive test, obtain the covering quality that the data service of different bandwidth can reach, just minimum pilot tone Ec/Io, for example following professional maximum transmission power and pilot tone Ec/Io mapping table:
Table one
| Service Type service rate (6%Bler) | Channel Model channel type | DL Load (%) down load | DL EbvsNo (dB) satisfies the required Eb/No of professional Qos | P_TCH_Max (dB) dedicated channel maximum transmission power | EcvsIo required (dB) Primary Common Pilot Channel Ec/Io |
| PS64 PS128 PS144 PS384 | TU3 TU3 TU3 TU3 | 40％ 40％ 40％ 40％ | 5.1 4.5 4.5 4.6 | 2 2 2 5 | -14.68 -12.27 -11.76 -10.40 |
From table one, can obtain, at certain specific transactions under certain cell type, certain load level, transmitting power and pilot tone Ec/Io corresponding relation.Utilize this corresponding relation, can know that under certain speed, the maximum coverage range that business can reach is dynamically adjusted user rate, guarantee to maintain appropriate speed in the overlay area business.
Based on above-mentioned principle, the present invention propose based on the data business speed dynamic regulating method that covers, it carries out data service rate according to professional maximum transmission power and pilot tone Ec/Io corresponding relation and dynamically adjusts.
Should may further comprise the steps based on the data business speed dynamic regulating method that covers:
1) after the sub-district covering is adjusted and finished, sets up type of service maximum transmission power and pilot tone Ec/Io mapping table (i.e. table one);
2) determine speed adjustment rank strategy, for every kind of rate business is determined the Ec/Io thresholding;
When 3) business is set up according to the configuration service rate sending measuring control messages;
4) under a certain speed, trigger described Ec/Io thresholding as UE, then report trigger event;
5) the speed adjustment is done according to trigger event and rank strategy that UE reports by system, and upgrades the employed measurement control of this UE.
Further, also comprise step 6), select corresponding Ec/Io thresholding according to adjusted speed, and by measuring control messages notice UE.
Preferably, described speed is adjusted no more than three grades of rank.This three stage speed is expressed as respectively: maximum rate, medium rates, all standing speed.
Further, the Ec/Io thresholding of maximum rate correspondence is a maximum rate downward modulation thresholding; The Ec/Io thresholding of medium rates correspondence is medium rates rising thresholding, medium rates downward modulation thresholding; The Ec/Io thresholding of all standing speed correspondence is a minimum-rate rising thresholding.
Preferably, maximum rate downward modulation thresholding is: the Ec/Io of maximum rate covers thresholding; Medium rates rising thresholding is: the Ec/Io of maximum rate covers thresholding dB+1dB; Medium rates downward modulation thresholding is: the Ec/Io of medium rates covers thresholding; Minimum-rate rising thresholding is: the Ec/Io of medium rates covers thresholding dB-1dB.
Further, approaching when the Ec/Io of any two speed thresholding, it is two-stage that then described speed is adjusted rank: maximum rate and all standing speed.Approaching when the Ec/Io thresholding of maximum rate and all standing speed, then do not do the speed adjustment.
Preferably, described trigger event is 2D, the 2F incident of 3Gpp 25.331 agreements regulation, when triggering maximum rate downward modulation thresholding or medium rates downward modulation thresholding, then reports the 2D incident, system's downward modulation speed; When triggering minimum-rate rising thresholding or medium rates rising thresholding, then report the 2F incident, system raises speed.
Preferably, described Ec/Io thresholding is near being meant that the Ec/Io thresholding of two speed differs less than 1dB.
Above-mentioned other selection strategy of adjustment level is stored in the system, and is disposed by system.
Technical solution of the present invention has following beneficial effect:
1, effectively utilizes different rates in the multistage overlay network;
2, solving the power control of UE downlink outer loop, not restrain the descending power value of demand that causes outer too high, causes unnecessary reduction of speed adjustment;
3, rate recovery timely promotes customer service and experiences satisfaction.
Description of drawings
Fig. 1 is the flow chart of a specific embodiment of the present invention.
Embodiment
In conjunction with shown in Figure 1: a kind of based on the data business speed dynamic regulating method that covers, may further comprise the steps:
1) after the sub-district covering is adjusted and finished, set up type of service maximum transmission power and pilot tone Ec/Io mapping table according to drive test:
| Service Type service rate (6%Bler) | Channel Model channel type | DL Load (%) down load | DL EbvsNo (dB) satisfies the required Eb/No of professional Qos | P_TCH_Max (dB) dedicated channel maximum transmission power | EcvsIo required (dB) Primary Common Pilot Channel Ec/Io |
| PS64 PS128 PS144 PS384 | TU3 TU3 TU3 TU3 | 40％ 40％ 40％ 40％ | 5.1 4.5 4.5 4.6 | 2 2 2 5 | -14.68 -12.27 -11.76 -10.40 |
From last table, can obtain, at certain specific transactions under certain cell type, certain load level, transmitting power and pilot tone Ec/Io corresponding relation.Utilize this corresponding relation, can know that under certain speed, the maximum coverage range that business can reach is dynamically adjusted user rate, guarantee to maintain appropriate speed in the overlay area business.
2) determine speed adjustment rank strategy, for every kind of rate business is determined the Ec/Io thresholding: wherein speed is adjusted no more than three grades of rank.Three stage speeds are expressed as respectively: maximum rate, medium rates, all standing speed.The Ec/Io thresholding of maximum rate correspondence is a maximum rate downward modulation thresholding; The Ec/Io thresholding of medium rates correspondence is medium rates rising thresholding, medium rates downward modulation thresholding; The Ec/Io thresholding of all standing speed correspondence is a minimum-rate rising thresholding.If in three stage speeds, there is the Ec/Io thresholding of any two speed approaching, then do the two-stage adjustment; At this moment, include only maximum rate and all standing speed two stage speeds.If the Ec/Io thresholding of maximum rate and all standing speed is approaching, then do not do the speed adjustment.
When 3) business is set up according to the service rate sending measuring control messages of configuration (which kind of UTRAN should do and measure by measuring control messages notice UE, how to measure, and how to report UTRAN etc. after the measurement);
4) under a certain speed, trigger described Ec/Io thresholding as UE, then report trigger event;
5) the speed adjustment is done according to trigger event and rank strategy that UE reports by system, and upgrades the employed measurement control of this UE.
For example, network for coverage Ps 64k (all standing speed)＞Ps 128k (medium rates)＞Ps 384k (maximum rate), when user Ps384k from center of housing estate to the cell edge moving process, trigger maximum rate downward modulation threshold event when going out the 384k area of coverage, speed is adjusted to 128k (medium rates), after going out the 128k area of coverage, trigger medium rates downward modulation thresholding, speed is adjusted to 64k (all standing speed).The user returns then, triggers minimum-rate rising threshold event when getting back to the medium rates area of coverage, and rate recovery is to medium rates.Trigger medium rates rising thresholding when moving to the maximum rate area of coverage then, speed is adjusted to maximum rate.
6) according to adjusted speed, select corresponding Ec/Io thresholding, and by Measurement Control (measuring control) message informing UE.
Wherein, maximum rate downward modulation thresholding is recommended as: the Ec/Io of maximum rate covers thresholding dB},
Medium rates rising thresholding is recommended as: the Ec/Io of maximum rate covers thresholding dB+1dB},
Medium rates downward modulation thresholding is recommended as: the Ec/Io of medium rates covers thresholding dB},
Minimum-rate rising thresholding is recommended as: { Ec/Io of medium rates covers thresholding dB-1dB}.
Wherein, for Event triggered, can adopt 2D, the 2F incident pointed out in 3Gpp 25.331 agreements; The currently used frequency quality of 2D representations of events is lower than an absolute thresholding, and the currently used frequency quality of 2F representations of events is higher than an absolute thresholding.After the EcIo of the Primary Common Pilot Channel PCPICH that UE measures is lower than the 2D thresholding (the downward modulation thresholding of current business speed just) of setting, by reporting 2D event notification network side, mean that current business speed has exceeded its overlay area this moment, need carry out transferring to ensure link stability under the speed.The EcIo of the Primary Common Pilot Channel PCPICH that UE measures be higher than be provided with behind the 2F thresholding (the rising thresholding of current business speed just), by reporting 2F event notification network side, mean that current business speed has arrived the overlay area of higher first-rate this moment, can raise speed and improve user's throughput.Use 2D, 2F incident to represent to reduce threshold event and rising threshold event respectively.And corresponding 2D, 2F incident are set respectively at different rates.
Claims (10)
1, a kind of data business speed dynamic regulating method based on covering is characterized in that, may further comprise the steps:
1) after the sub-district covering is adjusted and finished, sets up type of service maximum transmission power and pilot tone Ec/Io mapping table;
2) determine speed adjustment rank strategy, for every kind of rate business is determined the Ec/Io thresholding;
When 3) business is set up according to the configuration service rate sending measuring control messages;
4) under a certain speed, trigger described Ec/Io thresholding as UE, then report trigger event;
5) the speed adjustment is done according to trigger event and rank strategy that UE reports by system, and upgrades the employed measurement control of this UE.
2, the data business speed dynamic regulating method based on covering according to claim 1 is characterized in that, also comprises step:
6) according to adjusted speed, select corresponding Ec/Io thresholding, and by measuring control messages notice UE.
3, the data business speed dynamic regulating method based on covering according to claim 1 and 2 is characterized in that, described speed is adjusted no more than three grades of rank.
4, the data business speed dynamic regulating method based on covering according to claim 3 is characterized in that, it is three grades that described speed is adjusted rank, and this three stage speed is expressed as respectively: maximum rate, medium rates, all standing speed.
5, the data business speed dynamic regulating method based on covering according to claim 4 is characterized in that, the Ec/Io thresholding of described maximum rate correspondence is a maximum rate downward modulation thresholding; The Ec/Io thresholding of medium rates correspondence is medium rates rising thresholding, medium rates downward modulation thresholding; The Ec/Io thresholding of all standing speed correspondence is a minimum-rate rising thresholding.
6, the data business speed dynamic regulating method based on covering according to claim 5 is characterized in that, maximum rate downward modulation thresholding is: the Ec/Io of maximum rate covers thresholding; Medium rates rising thresholding is: the Ec/Io of maximum rate covers thresholding dB+1dB; Medium rates downward modulation thresholding is: the Ec/Io of medium rates covers thresholding; Minimum-rate rising thresholding is: the Ec/Io of medium rates covers thresholding dB-1dB.
7, the data business speed dynamic regulating method based on covering according to claim 6 is characterized in that, approaching when the Ec/Io of any two speed thresholding, it is two-stage that described speed is adjusted rank: maximum rate and all standing speed.
8, it is characterized in that based on the data business speed dynamic regulating method that covers according to claim 6 is described, approaching when the Ec/Io thresholding of maximum rate and all standing speed, then do not do the speed adjustment.
9, according to claim 1 based on the data business speed dynamic regulating method that covers, it is characterized in that, described trigger event is 2D, the 2F incident of 3Gpp 25.331 agreements regulation, when triggering maximum rate downward modulation thresholding or medium rates downward modulation thresholding, then report the 2D incident, system's downward modulation speed; When triggering minimum-rate rising thresholding or medium rates rising thresholding, then report the 2F incident, system raises speed.
10, according to claim 7 or 8 described data business speed dynamic regulating methods based on covering, it is characterized in that: described Ec/Io thresholding is near being meant that the Ec/Io thresholding of two speed differs less than 1dB.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2008138196A1 (en) * | 2007-05-14 | 2008-11-20 | Huawei Technologies Co., Ltd. | Method and device for reporting information |
| WO2012019562A1 (en) * | 2010-08-13 | 2012-02-16 | 电信科学技术研究院 | Minimization of drive test method, system, and device |
| CN103906144A (en) * | 2012-12-26 | 2014-07-02 | ***通信集团上海有限公司 | Method and device for adjusting data service rate of mobile terminal |
| CN105307183A (en) * | 2014-07-31 | 2016-02-03 | ***通信集团设计院有限公司 | Method and device for establishing data service model |
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2006
- 2006-07-18 CN CNB2006100617238A patent/CN100557999C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008138196A1 (en) * | 2007-05-14 | 2008-11-20 | Huawei Technologies Co., Ltd. | Method and device for reporting information |
| CN101309165B (en) * | 2007-05-14 | 2012-04-04 | 华为技术有限公司 | Control method, apparatus and equipment for information reporting |
| US8451737B2 (en) | 2007-05-14 | 2013-05-28 | Huawei Technologies, Co., Ltd. | Method for processing information reporting, information reporting device and system |
| WO2012019562A1 (en) * | 2010-08-13 | 2012-02-16 | 电信科学技术研究院 | Minimization of drive test method, system, and device |
| US8630250B2 (en) | 2010-08-13 | 2014-01-14 | China Academy Of Telecommunications Technology | Method, system and apparatus for minimization of drive tests |
| CN103906144A (en) * | 2012-12-26 | 2014-07-02 | ***通信集团上海有限公司 | Method and device for adjusting data service rate of mobile terminal |
| CN103906144B (en) * | 2012-12-26 | 2017-11-21 | ***通信集团上海有限公司 | A kind of method and device for the data service rate for adjusting mobile terminal |
| CN105307183A (en) * | 2014-07-31 | 2016-02-03 | ***通信集团设计院有限公司 | Method and device for establishing data service model |
| CN105307183B (en) * | 2014-07-31 | 2019-04-26 | ***通信集团设计院有限公司 | A kind of method and apparatus for establishing data service model |
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