CN101159455B - Available power utilization method and apparatus for high speed downlink sharing physical channel - Google Patents

Available power utilization method and apparatus for high speed downlink sharing physical channel Download PDF

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CN101159455B
CN101159455B CN2007101665801A CN200710166580A CN101159455B CN 101159455 B CN101159455 B CN 101159455B CN 2007101665801 A CN2007101665801 A CN 2007101665801A CN 200710166580 A CN200710166580 A CN 200710166580A CN 101159455 B CN101159455 B CN 101159455B
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cqi
pdsch
horsepower
correspondence
available
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CN101159455A (en
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张占全
郭房富
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Huawei Technologies Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

The invention discloses a method and a device of utilizing the usable power of a high-speed downlink shared physical channel and which is used for enhancing the power efficiency which is allocated to HS-PDSCH. The method includes that: correcting the feedback CQI of user equipment to obtain a first CQI, and determine the required power of HS-PDSCH corresponding to the first CQI; determining the differential of the usable power of HS-PDSCH and the required power of HS-PDSCH; when the differential is smaller than 1dB, using all the usable power of HS-PDSCH to transmit data.

Description

The available horsepower of high speed down sharing physical channel is utilized method and device
Technical field
The present invention relates to communication technical field, particularly a kind of available horsepower of high speed down sharing physical channel is utilized technology.
Background technology
HSDPA (High Speed Downlink Packet Access, high speed downlink packet inserts) be 3GPP (3rd Generation Partnership Project, third generation communication partner tissue) one of the introducing of R5 release protocol has breakthrough technology, be that WCDMA (Wideband Code Division MultipleAccess, Wideband Code Division Multiple Access (WCDMA)) system improves the key technology of descending hardware circuit solution and system spectral efficiency.
HSDPA has increased by 3 kinds of channel: HS-SCCH (High Speed-Share ControlChannel in physical layer, High-Speed Shared Control Channel), HS-PDSCH (High Speed-Physical Downlink ShareChannel, high speed down sharing physical channel) and HS-DPCCH (High Speed-Dedicated PhysicalControl Channel, High-Speed Dedicated Physical Control Channel).
Wherein, HS-SCCH is used for the bearing downlink signaling, is mainly used in the information of the relevant HS-PDSCH channel of notice UE (User Equipment, subscriber equipment).The spreading factor of HS-SCCH is fixed as 128, adopts QPSK (Quadrature Phase Shift Keying, four advance phase-shift keying) modulation system.HS-DPCCH is used to carry the uplink feedback information relevant with HS-PDSCH, comprise ACK/NACK (Acknowledge/Not Acknowledge, affirmation/non-affirmation), CQI (Channel QualityIndicator, channel quality indication) information, the spreading factor of HS-DPCCH is fixed as 256.HS-PDSCH is used for the bearing downlink business datum, and the spreading factor of HS-PDSCH is fixed as 16, and each sub-district is configurable 15 HS-PDSCH at most, and the channel code of HS-PDSCH must be continuously.HS-PDSCH can adopt QPSK or 16QAM (16Quadrature Amplitude Modeulation, 16 phase quadrature amplitude modulation) modulation system.
Wherein, the CQI of up feedback is a very important information, is used to indicate the HS-PDSCH quality of channel.The HS-PDSCH quality of channel is estimated that by UE according to estimated result, UE chooses appropriate C QI to its resident base station feedback according to known HS-PDSCH resource allocation status.
And for HSDPA, it is that the UE that is scheduled carries out TBSize (Transport Block Size that the base station constantly all needs the available horsepower resource according to CQI and current HSDPA in each 2ms scheduling, the transmission block size) selection and scheduling, but the accuracy of the CQI that UE reports will directly influence the Block Error Rate (BLER:Block Error Rate) that is carried on the transmission block on the HS-PDSCH, so the CQI bearing calibration is generally all arranged, its bearing calibration is a value of adjusting CQI according to the relation between BLER and the BLERTarget, adjust step value and be generally less than 1, therefore causing the CQI after the correction is not integer value.
Example is as shown in table 1 below, is 3GPP TS 25.214 Table 7A, is the CQI mapping table of 1-6 class UE.From the CQI mapping table as can be seen the value of CQI all be integer, step-length is 1, and when the CQI value differs 1, the HS-PDSCH required horsepower that then is equivalent to be used to send the corresponding TBSize data of CQI differs 1dB.CQI and power are linear in the dB territory, but really not so on the power percentage of linear domain, the power radix is big more, and the absolute power that increase 1dB need increase is big more.
Generally, be used to send the HS-PDSCH required horsepower P of the corresponding TBSize data of CQI HSPDSCHBe certain to be less than or equal to the available horsepower of distributing to HS-PDSCH.If P HSPDSCHEqual the HS-PDSCH available horsepower, the HS-PDSCH available horsepower that then can exhaust, the utilance of HS-PDSCH available horsepower has reached 100%; If P HSPDSCHThan HS-PDSCH available horsepower little less than 1dB, then the HS-PDSCH available horsepower is medium and small less than that part of available horsepower of 1dB will utilize less than, thereby do not make full use of the HS-PDSCH available horsepower, the emergent power wasting phenomenon.
Table 1
The CQI value The transmission block size The HS-PDSCH number Modulation system Reference power adjusted value Δ N IR X rv
0? N/A? Super scope ? ? ? ?
1? 137? 1? QPSK? 0? 9600? 0?
2? 173? 1? QPSK? 0? ? ?
?
3? 233? 1? QPSK? 0? ? ?
4? 317? 1? QPSK? 0? ? ?
5? 377? 1? QPSK? 0? ? ?
6? 461? 1? QPSK? 0? ? ?
7? 650? 2? QPSK? 0? ? ?
8? 792? 2? QPSK? 0? ? ?
9? 931? 2? QPSK? 0? ? ?
10? 1262? 3? QPSK? 0? ? ?
11? 1483? 3? QPSK? 0? ? ?
12? 1742? 3? QPSK? 0? ? ?
13? 2279? 4? QPSK? 0? ? ?
14? 2583? 4? QPSK? 0? ? ?
15? 3319? 5? QPSK? 0? ? ?
16? 3565? 5? 16-QAM? 0? ? ?
17? 4189? 5? 16-QAM? 0? ? ?
18? 4664? 5? 16-QAM? 0? ? ?
19? 5287? 5? 16-QAM? 0? ? ?
20? 5887? 5? 16-QAM? 0? ? ?
21? 6554? 5? 16-QAM? 0? ? ?
22? 7168? 5? 16-QAM? 0? ? ?
23? 7168? 5? 16-QAM? -1? ? ?
24? 7168? 5? 16-QAM? -2? ? ?
25? 7168? 5? 16-QAM? -3? ? ?
26? 7168? 5? 16-QAM? -4? ? ?
27? 7168? 5? 16-QAM? -5? ? ?
28? 7168? 5? 16-QAM? -6? ? ?
29? 7168? 5? 16-QAM? -7? ? ?
30? 7168? 5? 16-QAM? -8? ? ?
Summary of the invention
The embodiment of the invention provides a kind of available horsepower of high speed down sharing physical channel to utilize method and device, distributes to the power utilization of HS-PDSCH in order to raising.
The embodiment of the invention proposes the available horsepower of a kind of high speed down sharing physical channel (HS-PDSCH) and utilizes method, comprising:
The CQI of correcting user equipment feedback obtains a CQI, and determines the HS-PDSCH required horsepower of a described CQI correspondence;
Determine the difference between HS-PDSCH available horsepower and the described HS-PDSCH required horsepower;
When described difference during, use all available horsepowers of described HS-PDSCH to send data less than 1dB.
The embodiment of the invention proposes the available horsepower use device of a kind of high speed down sharing physical channel (HS-PDSCH), comprising:
The required horsepower determining unit, the CQI that is used for correcting user equipment feedback obtains a CQI, and determines the HS-PDSCH required horsepower of a described CQI correspondence;
The difference determining unit is used for the difference between the definite HS-PDSCH required horsepower of definite HS-PDSCH available horsepower and described required horsepower determining unit;
Available horsepower is utilized the unit, when being used for the described difference determined when described difference determining unit less than 1dB, uses all available horsepowers of described HS-PDSCH to send data.
The available horsepower of the high speed down sharing physical channel that the embodiment of the invention provides is utilized method and device, base station, by when distributing to difference between HS-PDSCH available horsepower and the HS-PDSCH required horsepower less than 1dB, use all available horsepowers of HS-PDSCH to send data, not only can all utilize the HS-PDSCH available horsepower, can the emergent power wasting phenomenon, can also improve cell throughout.
Description of drawings
Fig. 1 utilizes method flow diagram for the available horsepower of embodiment of the invention high speed Physical Downlink Shared Channel;
The method flow diagram of Fig. 2 for carrying out the data transmission when this difference during less than 1dB in the embodiment of the invention;
Fig. 3 utilizes method flow diagram for the available horsepower of the embodiment of the invention one high speed Physical Downlink Shared Channel;
Fig. 4 is the available horsepower use device schematic diagram of embodiment of the invention high speed Physical Downlink Shared Channel.
Embodiment
In order to solve prior art when distributing to difference between HS-PDSCH available horsepower and the HS-PDSCH required horsepower less than 1dB, can't make full use of the problem of distributing to the HS-PDSCH available horsepower, the embodiment of the invention proposes the available horsepower of high speed down sharing physical channel and utilizes method, consult shown in Figure 1ly, this method comprises the steps:
The CQI of S101, correction UE feedback obtains a CQI, and determines the HS-PDSCH required horsepower of a described CQI correspondence;
The resident base station of UE is behind the CQI that receives the UE feedback, and the CQI that UE is fed back proofreaies and correct, and obtains a CQI.Such as, availablely utilize existing bearing calibration, adjust the value of CQI according to the relation between BLER and the BLERTarget, adjust step value and be generally less than 1, the CQI after therefore proofreading and correct generally is not an integer value.
After obtaining a CQI, the Δ in dB of a CQI correspondence is searched according to the CQI mapping table of this UE ability rating correspondence in the agreement 25.214 in the resident base station of UE, and determines the HS-PDSCH required horsepower of a CQI correspondence according to following formula (1):
P HSPDSCH＝P CPICH+Γ+Δin?dB....................................(1)
Wherein, P HSPDSCHThe HS-PDSCH required horsepower of representing a CQI correspondence; P CPICHThe power of expression CPICH (Common Pilot Channel, Common Pilot Channel); Γ represents to measure power bias; Δ in dB represents a CQI corresponding reference power adjustment.When a CQI is non-integer, can determine integer near a CQI; Value is the CQI corresponding reference power adjustment of this integer, is a CQI corresponding reference power adjustment.
S102, determine the difference between the HS-PDSCH available horsepower HS-PDSCH required horsepower corresponding with a CQI.
S103, when this difference during less than 1dB, use all available horsepowers of HS-PDSCH to send data.
In addition, consult shown in Figure 2ly, in step S103, when all available horsepowers of using HS-PDSCH sent data, the TBSize that can also utilize following method to determine carried out the transmission of data:
S201, according to rounding-off method the one CQI is rounded, the integer of determining is the integer near a CQI, and determined value is the 2nd CQI for the CQI of this integer;
S202, in the CQI of UE correspondence mapping table, obtain the TBSize of the 2nd CQI correspondence;
The TBSize of S203, use the 2nd CQI correspondence carries out data and sends.
Such as: the CQI that supposes a CQI correspondence is A.x, the precision of A.x is 0.1, A is an integer part, x is a fractional part, when the difference between the HS-PDSCH available horsepower HS-PDSCH required horsepower corresponding during less than 1dB with a CQI, if A.x 〉=A.5, then the resident base station of UE use value is that the TBSize of the 2nd CQI correspondence of A+1 carries out data and sends, and uses all available horsepowers of HS-PDSCH to send the data of the TBSize of the 2nd CQI correspondence; If A.x＜A.5, then the resident base station of UE use value is that the TBSize of the 2nd CQI correspondence of A carries out data and sends, and uses all available horsepowers of HS-PDSCH to send the data of the TBSize of the 2nd CQI correspondence.
The available horsepower of the above-mentioned high speed down sharing physical channel that provides in the embodiment of the invention is utilized in the method:
When A.x 〉=A.5, use all available horsepowers of HS-PDSCH to send the data of the TBSize of the 2nd CQI correspondence, though all available horsepowers of HS-PDSCH are less than the needed minimum power of data of the TBSize that sends the 2nd CQI correspondence, but can all utilize the HS-PDSCH available horsepower, make the utilance of HS-PDSCH available horsepower reach 100%.
When A.x＜A.5, use all available horsepowers of HS-PDSCH to send the data of the TBSize of the 2nd CQI correspondence, though all available horsepowers of HS-PDSCH are greater than the needed minimum power of data of the TBSize that sends the 2nd CQI correspondence, but can all utilize the HS-PDSCH available horsepower, make the utilance of HS-PDSCH available horsepower reach 100%.
Comprehensive above-mentioned two kinds of situations, the available horsepower of the high speed down sharing physical channel that the embodiment of the invention provides utilizes method to round up at a CQI can cause that the BLER value is more higher than BLERTarget, a CQI can cause the BLER value more on the low side than BLERTarget when rounding and choosing TBSize when choosing TBSize downwards, the result that both are comprehensive, add the resident base station of UE and all can proofread and correct, estimate that final BLER value also can converge to BLERTarget according to the adjustment that the relation between BLER and the BLERTarget is carried out to each CQI that UE feeds back.
Difference between HS-PDSCH available horsepower and HS-PDSCH required horsepower is during less than 1dB, the available horsepower of the high speed down sharing physical channel that the employing embodiment of the invention provides is utilized method, can all utilize all available horsepowers of HS-PDSCH, can the emergent power wasting phenomenon, and then can improve cell throughout.And the UE (such as only being applied to the UE that last is scheduled) that this method can be applied to each UE that is scheduled or partly be scheduled.
In addition, difference between HS-PDSCH available horsepower and HS-PDSCH required horsepower is during less than 1dB, also can send the data of the TBSize that selects according to the such HS-PDSCH required horsepower that directly uses of prior art, afterwards, the pairing that part of available horsepower of the difference between HS-PDSCH available horsepower and the HS-PDSCH required horsepower being distributed to other users that are scheduled uses.This method also can all be utilized the HS-PDSCH available horsepower, can the emergent power wasting phenomenon, also can improve cell throughout.
Embodiment one
The available horsepower that the embodiment of the invention one utilizes the 3GPP TS 25.214 Table 7A shown in the above-mentioned table 1 to describe the high speed down sharing physical channel that the embodiment of the invention provides in detail is utilized method.
Suppose a UE being scheduled, the CQI mapping table of this UE ability rating correspondence is 3GPP TS25.214 Table 7A, obtaining a CQI after the CQI that feed back this UE the resident base station of this UE proofreaies and correct is 24.3, it is 40.5dBm that the resident base station assigns of this UE is given the HS-PDSCH available horsepower, the power of CPICH is 41dBm, the measurement power bias is 1dB, then consult shown in Figure 3ly, the detailed process that the embodiment of the invention one utilizes method that the embodiment of the invention provides that the available horsepower of high speed down sharing physical channel is utilized is as described below:
Obtaining a CQI after the CQI that feed back this UE the resident base station of S301, UE proofreaies and correct is 24.3.
The Δ in dB of a CQI correspondence is searched in the resident base station of S302, UE in the CQI of this UE correspondence mapping table.
The one CQI value is 24.3, and according to rounding-off method the one CQI being rounded downwards is 24, and the Δ in dB that searches 24 correspondences in this CQI mapping table is-2dB.
S303, determine the HS-PDSCH required horsepower of a CQI correspondence according to formula (1).
In power, measurement power bias and the Δ in dB substitution formula (1) with CPICH, the HS-PDSCH required horsepower of trying to achieve a CQI correspondence is 40dBm.
S304, determine that the difference between HS-PDSCH available horsepower and the HS-PDSCH required horsepower is 0.5dB.
S305, determine that the integer near a CQI is 24, determined value is that 24 CQI is the 2nd CQI.
The TBSize of S306, use the 2nd CQI correspondence carries out data and sends, and all available horsepower 40.5dBm of use HS-PDSCH send the data of the TBSize of the 2nd CQI correspondence.
As can be seen from Table 1, the 2nd CQI correspondence 5 HS-PDSCH are arranged, in step S306, all available horsepower 40.5dBm of HS-PDSCH are by mean allocation or be distributed in by a certain percentage on these 5 HS-PDSCH, and every HS-PDSCH sends the data of the TBSize of the 2nd CQI correspondence by the power that distributes.
In the embodiment of the invention one, suppose to obtain after proofread and correct the CQI of this UE feedback the resident base station of UE a CQI and be 24.7, the power of CPICH is 42dBm, the Δ in dB that then should search 25 correspondences in above-mentioned steps S302 in the CQI mapping table is-3dB, use value is that the TBSize of 25 the 2nd CQI correspondence carries out data and sends in step S306, uses all available horsepower 40.5dBm of HS-PDSCH to send the data of the TBSize of the 2nd CQI correspondence.
The method that the embodiment of the invention one adopts the embodiment of the invention to provide is utilized the available horsepower of high speed down sharing physical channel, can all utilize all available horsepowers of HS-PDSCH, improve the power utilization of distributing to HS-PDSCH, can the emergent power wasting phenomenon, and improved cell throughout.
Consult shown in Figure 4ly, the embodiment of the invention provides a kind of available horsepower use device of high speed down sharing physical channel, comprising:
Required horsepower determining unit 401, the CQI that is used for correcting user equipment feedback obtains a CQI, and determines the HS-PDSCH required horsepower of a described CQI correspondence;
Difference determining unit 402 is used for determining the difference between the definite HS-PDSCH required horsepower of HS-PDSCH available horsepower and required horsepower determining unit 401;
Available horsepower is utilized unit 403, when being used for this difference of determining when difference determining unit 402 less than 1dB, uses all available horsepowers of HS-PDSCH to send data;
Transmission block size determining unit 404 is used for determining the most approaching described CQI and for integer-valued the 2nd CQI, uses the TBSize of described the 2nd CQI correspondence to carry out the transmission of described data.
The embodiment of the invention also provides a kind of base station, be provided with the available horsepower use device of the high speed down sharing physical channel of describing in the above embodiment of the present invention in this base station, the available horsepower that the high speed down sharing physical channel that provides according to the embodiment of the invention is provided utilizes method that the available horsepower of distributing to high speed down sharing physical channel is utilized.
The available horsepower of the high speed down sharing physical channel that the embodiment of the invention provides is utilized method and device, base station, by when distributing to difference between HS-PDSCH available horsepower and the HS-PDSCH required horsepower less than 1dB, use all available horsepowers of HS-PDSCH to send data, not only can all utilize the HS-PDSCH available horsepower, can the emergent power wasting phenomenon, improve the power utilization of distributing to HS-PDSCH, can also improve cell throughout.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (8)

1. the available horsepower of a high speed down sharing physical channel (HS-PDSCH) is utilized method, it is characterized in that, comprising:
The CQI of correcting user equipment feedback obtains a CQI, and determines the HS-PDSCH required horsepower of a described CQI correspondence;
Determine the difference between HS-PDSCH available horsepower and the described HS-PDSCH required horsepower;
When described difference during, use all available horsepowers of described HS-PDSCH to send data less than 1dB.
2. the method for claim 1 is characterized in that, determines the most approaching described CQI and is integer-valued the 2nd CQI, uses the TBSize of described the 2nd CQI correspondence to carry out the transmission of described data.
3. the method for claim 1 is characterized in that, determines the HS-PDSCH required horsepower of a described CQI correspondence according to following formula:
P HSPDSCH＝P CPICH+Γ+Δin?dB
Wherein, P HSPDSCHThe HS-PDSCH required horsepower of representing a described CQI correspondence; Described P CPICHThe power of expression Common Pilot Channel; Γ represents to measure power bias; Δ in dB represents a described CQI corresponding reference power adjustment.
4. method as claimed in claim 2 is characterized in that, describedly determines the most approaching described CQI and is integer-valued the 2nd CQI, and the transmission of using the transmission block size of described the 2nd CQI correspondence to carry out described data comprises:
Determine the integer of the most approaching described CQI according to rounding-off method, and determined value is described the 2nd CQI for the CQI of this integer;
In the CQI of described subscriber equipment correspondence mapping table, determine the TBSize of described the 2nd CQI correspondence;
Use described TBSize to carry out the transmission of described data.
5. the available horsepower use device of a high speed down sharing physical channel (HS-PDSCH) is characterized in that, comprising:
The required horsepower determining unit, the CQI that is used for correcting user equipment feedback obtains a CQI, and determines the HS-PDSCH required horsepower of a described CQI correspondence;
The difference determining unit is used for the difference between the definite HS-PDSCH required horsepower of definite HS-PDSCH available horsepower and described required horsepower determining unit;
Available horsepower is utilized the unit, when being used for the described difference determined when described difference determining unit less than 1dB, uses all available horsepowers of described HS-PDSCH to send data.
6. device as claimed in claim 5 is characterized in that, described device further comprises:
Transmission block size determining unit is used for determining the most approaching described CQI and for integer-valued the 2nd CQI, uses the TBSize of described the 2nd CQI correspondence to carry out the transmission of described data.
7. a base station is characterized in that, comprising:
The required horsepower determining unit, the CQI that is used for correcting user equipment feedback obtains a CQI, and determines high speed down sharing physical channel (HS-PDSCH) required horsepower of a described CQI correspondence;
The difference determining unit is used for the difference between the definite HS-PDSCH required horsepower of definite HS-PDSCH available horsepower and described required horsepower determining unit;
Available horsepower is utilized the unit, when being used for the described difference determined when described difference determining unit less than 1dB, uses all available horsepowers of described HS-PDSCH to send data.
8. base station as claimed in claim 7 is characterized in that, described base station further comprises:
Transmission block size determining unit is used for determining the most approaching described CQI and for integer-valued the 2nd CQI, uses the TBSize of described the 2nd CQI correspondence to carry out the transmission of described data.
CN2007101665801A 2007-11-06 2007-11-06 Available power utilization method and apparatus for high speed downlink sharing physical channel Active CN101159455B (en)

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CN101626614B (en) * 2009-06-22 2011-12-07 中兴通讯股份有限公司 Method and device for controlling outer ring power of high-speed physical downlink shared channel
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CN1788436A (en) * 2003-05-16 2006-06-14 三菱电机株式会社 Base station, mobile station, communication system, and communication method
CN1863348A (en) * 2006-01-18 2006-11-15 华为技术有限公司 Method and apparatus for base station to dispatch user data
CN101040559A (en) * 2004-10-15 2007-09-19 株式会社Ntt都科摩 Packet transmission control device and packet transmission control method

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Publication number Priority date Publication date Assignee Title
WO2004073245A1 (en) * 2003-02-14 2004-08-26 Siemens Aktiengesellschaft Data transmission method
CN1788436A (en) * 2003-05-16 2006-06-14 三菱电机株式会社 Base station, mobile station, communication system, and communication method
CN101040559A (en) * 2004-10-15 2007-09-19 株式会社Ntt都科摩 Packet transmission control device and packet transmission control method
CN1863348A (en) * 2006-01-18 2006-11-15 华为技术有限公司 Method and apparatus for base station to dispatch user data

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