CN102932896A - Method and device for selecting enhanced-transport format combination (E-TFC) of high-speed uplink packet access - Google Patents
Method and device for selecting enhanced-transport format combination (E-TFC) of high-speed uplink packet access Download PDFInfo
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Abstract
The invention discloses a method and a device for selecting an enhanced-transport format combination (E-TFC) of high-speed uplink packet access. The method comprises the following steps of: determining a modulation mode which is authorized to the E-TFC according to an appropriate authorization power threshold; and selecting the E-TFC on a media access control (MAC) layer on the basis of the modulation mode which is authorized to the E-TFC. The device comprises an authorization modulation mode determination unit and an E-TFC selection unit, wherein the authorization modulation mode determination unit is used for determining the modulation mode which is authorized to the E-TFC according to the appropriate authorization power threshold; and the E-TFC selection unit is used for selecting the E-TFC on the MAC layer on the basis of the modulation mode which is authorized to the E-TFC. The invention has the advantages that in the determined modulation mode, a maximum transport block set (TBS) which is in accordance with the conditions is searched in the E-TFC, and the calculating complexity of E-TFC selection can be reduced by half on the basis of the conventional scheme.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to a kind of high speed uplink packet access E-TFC (Enhanced-Transport Format Combination, enhanced transport format combination) system of selection and device.
Background technology
Between base station node B and user UE, in order to satisfy better the demand of the high speed upstream data services such as interaction multimedia, TD-SCDMA (Time Division Synchronization CDMA, TD SDMA) the honeycomb mobile communcations system has been introduced HSUPA (High Speed Uplink Packet Access, the high speed uplink packet access) technology, to improve the transmission capacity of up-link wireless link, satisfy user's uplink service demand, wherein the E-TFC selection is a key technology among the HSUPA.
The E-TFC selection is the important step in the protocol stack business, its process be multiplexing for logic channel after, be the size that MAC (Media Access Control, media access control) layer is selected TBS (Transport Block Set, transmission block) in E-TFC according to authorization message.In 3GPP (3rd Generation Partnership Project, third generation partner program) agreement TS25.321, rule and implementation that the E-TFC selection should be followed have only generally been provided.Existing scheme need to be in user UE side with 16QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation) and QPSK (Quadrature Phase Shift Keying, Quadrature Phase Shift Keying) TBS among the E-TFC under two kinds of modulation systems travels through one time, finally selects the maximum TBS adaptive with physical resource.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of high speed uplink packet access E-TFC system of selection and device are provided, and under the condition that is not affecting existing scheme performance, the UE side carried out the computation complexity that E-TFC selects reduce half.
The technical solution used in the present invention is that described high speed uplink packet access E-TFC system of selection comprises:
Determine to license to the modulation system of E-TFC according to the authorization power thresholding that arranges, carry out E-TFC based on the modulation system that licenses to E-TFC at the MAC layer and select.
Further, described authorization power thresholding according to setting determines to license to the modulation system of E-TFC, specifically comprises:
The first physical resource according to configuration is determined the authorization power thresholding;
If the base station less than described authorization power thresholding, then authorizes E-TFC to select the QPSK modulation system to user's authorization power, otherwise authorizes E-TFC to select the 16QAM modulation system.
Further, described the first physical resource according to configuration is determined the authorization power thresholding, specifically comprises:
The first physical resource of configuration comprises: spreading factor, HARQ (Hybrid Automatic Repeat request, mixed automatic retransfer) bias Δ
HarqAnd spreading factor and gain factor
eCorresponding relation;
Spreading factor and the HARQ bias Δ set
HarqLower, according to the corresponding relation of transmission code rate and target signal to noise ratio under the different modulating mode, select transmission code rate λ under the QPSK modulation system
1Corresponding TBS size is greater than transmission code rate λ under the 16QAM modulation system
2Target signal to noise ratio maximum when corresponding TBS is big or small is as target signal to noise ratio β
0, eSubstitution formula (1) is obtained the authorization power threshold value
e, α wherein
eBe the gain factor corresponding with spreading factor;
β
e＝β
0，e+α
e+Δ
harq (1)。
Further, described modulation system based on licensing to E-TFC is carried out the E-TFC selection at the MAC layer, specifically comprises:
From control channel, read the base station to user's authorization power;
Licensing under the modulation system of E-TFC, find out in TBS subset corresponding to CU time slot and satisfy that described authorization power requires and the maximum TBS adaptive with the second physical resource of configuration, the second physical resource of described configuration comprises: transmission code rate scope corresponding to the modulation system that the described user of licensing to uses, data volume size and user's side maximum transmission power of user side buffering area.
Further, described licensing under the modulation system of E-TFC found out in TBS subset corresponding to CU time slot and satisfied that described authorization power requires and the maximum TBS adaptive with the second physical resource of configuration, specifically comprises:
A1, in TBS subset corresponding to CU time slot according to one of from big to small selective sequential untreated TBS still;
A2, the transmission code rate scope that the modulation system of using according to the described user of licensing to is corresponding and the data volume size of user side buffering area judge whether described TBS is eligible, if, execution in step A3 then, otherwise execution in step A1;
A3 calculates the transmission code rate of described TBS, determines user's traffic channel transmission power according to the transmission code rate of TBS;
Whether A4 judges user's traffic channel transmission power less than or equal to described authorization power and user's side maximum transmission power, if, determine that then described user's TBS corresponding to traffic channel transmission power is final result, otherwise jump procedure A1.
The present invention also provides a kind of high speed uplink packet access E-TFC choice device, comprising:
Authorize the modulation system determining unit, for the modulation system of determining to license to E-TFC according to the authorization power thresholding that arranges;
The E-TFC selected cell is used for carrying out E-TFC based on the modulation system that licenses to E-TFC at the MAC layer and selects.
Further, described mandate modulation system determining unit specifically comprises:
The authorization power thresholding arranges module, is used for determining the authorization power thresholding according to the first physical resource of configuration;
Authorize the modulation system determination module, be used for when the base station to user's authorization power during less than described authorization power thresholding, selection QPSK modulation system, remaining situation is all selected the 16QAM modulation system.
Further, described authorization power thresholding arranges module, is used for:
The first physical resource of described configuration comprises: spreading factor, HARQ bias Δ
HarqAnd spreading factor and gain factor
eCorresponding relation;
Spreading factor and the HARQ bias Δ set
HarqLower, according to the corresponding relation of transmission code rate and target signal to noise ratio under the different modulating mode, select transmission code rate λ under the QPSK modulation system
1Corresponding TBS size is greater than transmission code rate λ under the 16QAM modulation system
2Target signal to noise ratio maximum when corresponding TBS is big or small is as target signal to noise ratio β
0, eSubstitution formula (1) is obtained the authorization power threshold value
e, α wherein
eBe the gain factor corresponding with spreading factor;
β
e＝β
0，e+α
e+Δ
harq (1)。
Further, described E-TFC selected cell specifically comprises:
Read module is used for reading the base station to user's authorization power from control channel;
Search module, be used for licensing under the modulation system of E-TFC, find out in TBS subset corresponding to CU time slot and satisfy that described authorization power requires and the maximum TBS adaptive with the second physical resource of configuration, the second physical resource of described configuration comprises: transmission code rate scope corresponding to the modulation system of using with the described user of licensing to, data volume size and user's side maximum transmission power of user side buffering area.
Further, the described module of searching specifically comprises:
Choose submodule, be used in TBS subset corresponding to CU time slot calling first and judging submodule according to one of from big to small selective sequential untreated TBS still;
First judges submodule, be used for transmission code rate scope corresponding to the modulation system used according to the described user of licensing to and the data volume size of user side buffering area and judge whether described TBS is eligible, if, then call the power calculation submodule, choose submodule otherwise call;
The power calculation submodule calculates the transmission code rate of described TBS, determines user's traffic channel transmission power according to the transmission code rate of TBS;
Second judges submodule, be used for judging that whether user's traffic channel transmission power is less than or equal to described authorization power and user's side maximum transmission power, if, determine that then described user's TBS corresponding to traffic channel transmission power is final result, choose submodule otherwise call.
Adopt technique scheme, the present invention has following advantages at least:
High speed uplink packet access E-TFC system of selection of the present invention and device, by being set, suitable authorization power thresholding judges the modulation system that licenses to E-TFC, under the modulation system of determining, search qualified maximum TBS at E-TFC, therefore, the present invention can be on the basis of existing scheme, and the computation complexity in the time of will carrying out the E-TFC selection reduces half.
Description of drawings
Fig. 1 is first embodiment of the invention high speed uplink packet access E-TFC system of selection flow chart;
Fig. 2 is the flow chart of searching satisfactory maximum TBS in the first embodiment of the invention in TBS subset corresponding to CU time slot;
Fig. 3 is second embodiment of the invention high speed uplink packet access E-TFC choice device structural representation;
Fig. 4 searches module concrete structure schematic diagram in the second embodiment of the invention high speed uplink packet access E-TFC choice device;
Fig. 5 is the schematic diagram that concerns of reference transmission code check and target SIR.
Embodiment
Reach technological means and the effect that predetermined purpose is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, the present invention is described in detail as after.
First embodiment of the invention, a kind of high speed uplink packet access E-TFC system of selection as shown in Figure 1, comprises following concrete steps:
Step S101 arranges the authorization power thresholding.
Concrete, determine the authorization power thresholding according to the first physical resource of configuration, the first physical resource of described configuration comprises: spreading factor, HARQ bias Δ
HarqAnd spreading factor and gain factor
eCorresponding relation, determine that the method for authorization power thresholding is as follows:
Spreading factor and the HARQ bias Δ set
HarqLower, transmission code rate λ under the QPSK modulation system
1Corresponding TBS size is: λ
1* (44 * 16 * Q
1-17 * Q
2), transmission code rate λ under the 16QAM modulation system
2Corresponding TBS size is: λ
2* (44 * 16 * Q
1-17 * Q
2), wherein, Q
1Constant corresponding to modulation system that Traffic Channel is used, Q
2Constant corresponding to modulation system that control channel uses;
According to the corresponding relation of transmission code rate and target signal to noise ratio under the different modulating mode, select λ
1* (44 * 16 * Q
1-17 * Q
2)＞λ
2* (44 * 16 * Q
1-17 * Q
2) time the target signal to noise ratio maximum as target signal to noise ratio β
0, eSubstitution formula (1) is obtained the authorization power threshold value
e, α wherein
eBe the gain factor corresponding with spreading factor;
β
e＝β
0，e+α
e+Δ
harq (1)
Step S102 determines to license to the modulation system of E-TFC according to the authorization power thresholding that arranges.
Concrete, if the base station to user's authorization power less than described authorization power thresholding, then authorize E-TFC to select the QPSK modulation system, otherwise authorize E-TFC to select the 16QAM modulation system.
Step S103 carries out E-TFC based on the modulation system that licenses to E-TFC at the MAC layer and selects.
Concrete, from control channel, read the base station to user's authorization power;
Licensing under the modulation system of E-TFC, find out in TBS subset corresponding to CU time slot and satisfy that described authorization power requires and the maximum TBS adaptive with the second physical resource of configuration, the second physical resource of described configuration comprises: transmission code rate scope corresponding to the modulation system that the described user of licensing to uses, data volume size and user's side maximum transmission power of user side buffering area.As shown in Figure 2, it is as follows to search above-mentioned satisfactory maximum TBS process:
A1, in TBS subset corresponding to CU time slot according to one of from big to small selective sequential untreated TBS still;
A2, the transmission code rate scope that the modulation system of using according to the described user of licensing to is corresponding and the data volume size of user side buffering area judge whether described TBS is eligible, if, execution in step A3 then, otherwise execution in step A1;
A3 calculates the transmission code rate of described TBS, determines user's traffic channel transmission power according to the transmission code rate of TBS;
Whether A4 judges user's traffic channel transmission power less than or equal to described authorization power and user's side maximum transmission power, if then the corresponding TBS of described user's traffic channel transmission power is final result, otherwise jump procedure A1.
Second embodiment of the invention, a kind of high speed uplink packet access E-TFC choice device as shown in Figure 3, comprises following part:
1) authorizes modulation system determining unit 10, for the modulation system of determining to license to E-TFC according to the authorization power thresholding that arranges.
Concrete, authorize modulation system determining unit 10 to comprise:
The authorization power thresholding arranges module 11, is used for determining the authorization power thresholding according to the first physical resource of configuration.Concrete, the first physical resource of described configuration comprises: spreading factor, HARQ bias Δ
HarqAnd spreading factor and gain factor
eCorresponding relation;
Spreading factor and the HARQ bias Δ set
HarqLower, transmission code rate λ under the QPSK modulation system
1Corresponding TBS size is: λ
1* (44 * 16 * Q
1-17 * Q
2), transmission code rate λ under the 16QAM modulation system
2Corresponding TBS size is: λ
2* (44 * 16 * Q
1-17 * Q
2), wherein, Q
1The constant corresponding with the modulation system of Traffic Channel use, Q
2Constant corresponding to modulation system that control channel uses;
The authorization power thresholding arranges module 11 according to the corresponding relation of transmission code rate and target signal to noise ratio under the different modulating mode, selects λ
1* (44 * 16 * Q
1-17 * Q
2)＞λ
2* (44 * 16 * Q
1-17 * Q
2) time the target signal to noise ratio maximum as target signal to noise ratio β
0, eSubstitution formula (1) is obtained the authorization power threshold value
e, α wherein
eBe the gain factor corresponding with spreading factor;
β
e＝β
0，e+α
e+Δ
harq (1)。
Authorize modulation system determination module 12, be used for when the base station to user's authorization power during less than described authorization power thresholding, selection QPSK modulation system, remaining situation is all selected the 16QAM modulation system.
2) the E-TFC selected cell 20, are used for carrying out E-TFC based on the modulation system that licenses to E-TFC at the MAC layer and select.
Concrete, E-TFC selected cell 20 comprises:
Read module 21 is used for reading the base station to user's authorization power from control channel;
Further, as shown in Figure 4, search module 22 and specifically comprise:
Choose submodule 221, be used in TBS subset corresponding to CU time slot calling first and judging submodule according to one of from big to small selective sequential untreated TBS still;
First judges submodule 222, be used for transmission code rate scope corresponding to the modulation system used according to the described user of licensing to and the data volume size of user side buffering area and judge whether described TBS is eligible, if, then call the power calculation submodule, choose submodule otherwise call;
Power calculation submodule 223 calculates the transmission code rate of described TBS, determines user's traffic channel transmission power according to the transmission code rate of TBS;
Second judges submodule 224, be used for judging that whether user's traffic channel transmission power is less than or equal to described authorization power and user's side maximum transmission power, if then the corresponding TBS of described user's traffic channel transmission power is final result, chooses submodule otherwise call.
The below introduces an application example based on the technical scheme of first and second embodiment, and this example is by suitable authorization power thresholding being set, judging the modulation system that licenses to E-TFC in the NodeB side.
This example specifically may further comprise the steps:
The first step: the NodeB side arranges the authorization power thresholding, in order to determine to license to the modulation system of E-TFC.
The present invention program has proposed by the authorization power thresholding is set, the NodeB side judge that the modulation system of transmission block, thresholding arrange rationally whether, directly have influence on final performance.The below provides the theoretical derived value of thresholding as an example of the TD-SCDMA system example, suppose spreading factor SF=1, the HARQ bias Δ
HarqBe made as 0 by the high-level signaling configuration.
Be the TBS of QPSK for modulation system, suppose that its corresponding transmission code rate is λ
1Be the TBS of 16QAM for modulation system, suppose that its corresponding transmission code rate is λ
2Because the transmission code rate (λ e) of the Traffic Channel E-DCH of transport layer is defined as follows:
Wherein, S
eThe transmission block size of the E-TFC that expression is selected, R
eIt is the physical channel mapping physical channel bit number afterwards that Traffic Channel E-DCH processes.
R
e＝(44/SF)×16×Q
1-17×Q
2 (3)
Wherein, 44 symbolic numbers of occupying for Traffic Channel E-PUCH, SF is spreading factor, 16 is code channel number, Q
1Be numerical value (being 4 when being 2,16QAM during QPSK) corresponding to modulation system that Traffic Channel is used, 17 is 1 symbolic number that control channel E-UCCH takies, Q
2Be numerical value corresponding to the modulation system of control channel use (control channel can only only be used the QPSK modulation system, and its corresponding numerical value is 2).
The TBS size that different transmission code rates are corresponding under two kinds of modulation systems is that formula (2), (3) can draw according to the definition of transmission code rate:
1) the TBS size that modulation system QPSK is corresponding is: λ
1* (44 * 16 * 2-34)
2) the TBS size that modulation system 16QAM is corresponding is: λ
2* (44 * 16 * 4-34)
In the existing scheme, when two kinds of modulation systems are selected to satisfy the base station user's authorization power is required, select the conduct TBS to be selected of TBS maximum, that is to say, work as λ
1* (44 * 16 * 2-34)＞λ
2* (44 * 16 * 4-34) time, i.e. λ
1＞2.02 λ
2The time, select the QPSK modulation system.
The reference transmission code check that different target SIR under the different modulating mode (Signal-to-Interference Ratio, signal to noise ratio) is corresponding is as shown in table 1.
Table 1 reference transmission code check and corresponding target SIR
The reference transmission code check of drawing according to table 1 and target SIR concern that schematic diagram as shown in Figure 5, wherein dotted line represents is corresponding 2.02 times of transmission code rate lines of demarcation under each target SIR under the 16QAM modulation system, as seen from Figure 5, when target SIR during less than-5dB, no matter why target SIR is worth, under same target SIR, transmission code rate corresponding to QPSK modulation system is more than 2.02 times of corresponding transmission code rate, i.e. λ under the 16QAM modulation system
1＞2.02 λ
2, select the QPSK modulation system this moment.
Table 2 spreading factor SF and gain factor
eCorresponding relation
| SF | α e(dB) |
| 1 | 12 |
| 2 | 9 |
| 4 | 6 |
| 8 | 3 |
| 16 | 0 |
The front has been established SF=1, by the corresponding relation of spreading factor and gain factor namely table 2 can get α
e=12, HARQ bias Δ
HarqBe made as 0, β by the high-level signaling configuration
0, eValue is target SIR, by top derivation as can be known, when target SIR during less than-5dB, no matter why target SIR is worth, under same target SIR, should select the QPSK modulation system, so-5dB be transmission code rate corresponding to QPSK modulation system be under the 16QAM modulation system corresponding transmission code rate more than 2.02 times the time target SIR maximum, also can be understood as and be, the maximum of TBS corresponding to modulation system QPSK target SIR during greater than TBS corresponding to modulation system 16QAM.So, by formula (1) β
e=β
0, e+ α
e+ Δ
HarqAnd derive as can be known, authorization power is selected the QPSK modulation during less than 7dB.Therefore, the authorization power thresholding P of NodeB side setting
ThrShould be 7dB.
Second step: the authorization power thresholding P that the NodeB lateral root provides according to the first step
ThrJudge the modulation system that licenses to E-TFC.
Concrete, judge that NodeB is to the authorization power P of UE
GrantWhether greater than P
ThrIf, authorization power P
GrantGreater than P
Thr, then authorize E-TFC to use qam mode, if authorization power P
GrantLess than P
Thr, then authorize E-TFC to use the QPSK modulation system.
The 3rd step: according to the modulation system of authorizing in the second step, the UE end carries out E-TFC at the MAC layer to be selected, and specifically comprises:
S201:UE reads NodeB to the authorization power index PRRI of UE from physical layer control channel AGCH (Access Grant Channel allows the access channel);
TBS subset corresponding to time slot that S202:UE selects current UE to take according to the modulation system of authorization power index PRRI and mandate from the TBS table;
S203: under the modulation system of described mandate, utilize formula (2), (3) to calculate the transmission code rate λ of all TBS in the TBS subset
e
S204: in TBS subset corresponding to CU time slot according to one of from big to small selective sequential untreated TBS still.
S205: judge that the transmission code rate of this TBS is whether in transmission code rate scope corresponding to the modulation system that the described user of licensing to uses, license under the modulation system that the user uses described, the maximin of the reference transmission code check λ of high-level signaling notice is expressed as λ
MaxAnd λ
MinIf, the transmission code rate λ that a certain TBS is corresponding
eMeet λ
Min≤ λ
e≤ λ
Max, then this TBS meets the requirement of transmission code rate, execution in step S206, if do not satisfy the transmission code rate requirement, then jump procedure S204 selects next TBS in this TBS subset.
S206: will meet the TBS of transmission code rate requirement and the data volume of UE buffering area BUFFER and compare, and select the TBS less than the data volume of UE buffering area BUFFER, otherwise jump procedure S204 select next TBS in this TBS subset.
S207: the transmission code rate λ corresponding according to TBS
eThe reference power biasing β that this TBS of value interpolation calculation needs
e, and then try to achieve UE at the actual emission power of Traffic Channel.
The actual emission power of the Traffic Channel that the UE end arranges calculates according to following formula:
P
E-PUCH＝P
e-base+L+β
e (4)
Wherein, P
E-PUCHIt is the actual emission power of UE Traffic Channel;
P
E-baseIt is the closed loop amount that UE and NodeB safeguard;
L is path loss, according to measuring beacon physical channel.
β
eBe the reference power biasing that corresponding selected E-TFC transmission block size, the Traffic Channel E-PUCH physical resource that distributes, modulation system and HARQ setovers, above-mentioned formula (1) β can be arranged
e=β
0, e+ α
e+ Δ
HarqCalculate β
e, wherein, β
0, eCan be obtained by following formula (5):
β
0，e＝SIR (5)
Wherein SIR can be corresponding with target SIR by the reference transmission code check be namely to obtain in the table 2.
S208: judge that whether UE actual emission power under the current transmission code rate is less than or equal to the authorization power of Node B to UE, if then as TBS to be selected, otherwise jump procedure S204 selects next TBS in this TBS subset.
S209: judge that the UE actual emission power of correspondence of TBS to be selected is whether less than or equal to the maximum transmission power of UE, if then chosen qualified maximum TBS, execution in step S210, if can not satisfy this condition, then jump procedure S204 selects next TBS in this TBS subset.
S210: the index of qualified maximum TBS is issued Node B by Traffic Channel.
Certainly, the present invention also can judge the modulation system that the modulation system that licenses to E-TFC is transmission block TBS in the UE side, namely in the UE side suitable authorization power thresholding P is set
Thr, from control channel, read again NodeB to the authorization power P to UE
Grant, with authorization power P
GrantWith authorization power thresholding P
ThrCompare authorized modulation system to E-TFC.
By the explanation of embodiment, should be to reach technological means and the effect that predetermined purpose takes to be able to more deeply and concrete understanding to the present invention, yet appended diagram only provide with reference to the usefulness of explanation, the present invention is limited.
Claims (10)
1. high speed uplink packet access enhanced transport format combination E-TFC system of selection is characterized in that, comprising:
Determine to license to the modulation system of E-TFC according to the authorization power thresholding that arranges, carry out E-TFC based on the modulation system that licenses to E-TFC at the media access control MAC layer and select.
2. high speed uplink packet access E-TFC according to claim 1 system of selection is characterized in that described authorization power thresholding according to setting determines to license to the modulation system of E-TFC, specifically comprises:
The first physical resource according to configuration is determined the authorization power thresholding;
If the base station less than described authorization power thresholding, then authorizes E-TFC to select Quadrature Phase Shift Keying QPSK modulation system to user's authorization power, otherwise authorizes E-TFC to select quadrature amplitude modulation 16QAM modulation system.
3. high speed uplink packet access E-TFC according to claim 2 system of selection is characterized in that described the first physical resource according to configuration is determined the authorization power thresholding, specifically comprises:
The first physical resource of configuration comprises: spreading factor, mixed automatic retransfer HARQ bias Δ
HarqAnd spreading factor and gain factor
eCorresponding relation;
Spreading factor and the HARQ bias Δ set
HarqLower, according to the corresponding relation of transmission code rate and target signal to noise ratio under the different modulating mode, select transmission code rate λ under the QPSK modulation system
1Corresponding transmission block TBS size is greater than transmission code rate λ under the 16QAM modulation system
2Target signal to noise ratio maximum when corresponding TBS is big or small is as target signal to noise ratio β
0, eSubstitution formula (1) is obtained the authorization power threshold value
e, α wherein
eBe the gain factor corresponding with spreading factor;
β
e＝β
0，e+α
e+Δ
harq (1)。
4. according to claim 1 and 2 or 3 described high speed uplink packet access E-TFC systems of selection, it is characterized in that described modulation system based on licensing to E-TFC is carried out E-TFC at the MAC layer and selected, and specifically comprises:
From control channel, read the base station to user's authorization power;
Licensing under the modulation system of E-TFC, find out in TBS subset corresponding to CU time slot and satisfy that described authorization power requires and the maximum TBS adaptive with the second physical resource of configuration, the second physical resource of described configuration comprises: transmission code rate scope corresponding to the modulation system that the described user of licensing to uses, data volume size and user's side maximum transmission power of user side buffering area.
5. high speed uplink packet access E-TFC according to claim 4 system of selection, it is characterized in that, described licensing under the modulation system of E-TFC, in TBS subset corresponding to CU time slot, find out and satisfy that described authorization power requires and the maximum TBS adaptive with the second physical resource of configuration, specifically comprise:
A1, in TBS subset corresponding to CU time slot according to one of from big to small selective sequential untreated TBS still;
A2, the transmission code rate scope that the modulation system of using according to the described user of licensing to is corresponding and the data volume size of user side buffering area judge whether described TBS is eligible, if, execution in step A3 then, otherwise execution in step A1;
A3 calculates the transmission code rate of described TBS, determines user's traffic channel transmission power according to the transmission code rate of TBS;
Whether A4 judges user's traffic channel transmission power less than or equal to described authorization power and user's side maximum transmission power, if, determine that then described user's TBS corresponding to traffic channel transmission power is final result, otherwise jump procedure A1.
6. a high speed uplink packet access E-TFC choice device is characterized in that, comprising:
Authorize the modulation system determining unit, for the modulation system of determining to license to E-TFC according to the authorization power thresholding that arranges;
The E-TFC selected cell is used for carrying out E-TFC based on the modulation system that licenses to E-TFC at the MAC layer and selects.
7. high speed uplink packet according to claim 6 accesses the E-TFC choice device, it is characterized in that described mandate modulation system determining unit specifically comprises:
The authorization power thresholding arranges module, is used for determining the authorization power thresholding according to the first physical resource of configuration;
Authorize the modulation system determination module, be used for when the base station to user's authorization power during less than described authorization power thresholding, selection QPSK modulation system, remaining situation is all selected the 16QAM modulation system.
8. high speed uplink packet according to claim 7 accesses the E-TFC choice device, it is characterized in that described authorization power thresholding arranges module, is used for:
The first physical resource of described configuration comprises: spreading factor, HARQ bias Δ
HarqAnd spreading factor and gain factor
eCorresponding relation;
Spreading factor and the HARQ bias Δ set
HarqLower, according to the corresponding relation of transmission code rate and target signal to noise ratio under the different modulating mode, select transmission code rate λ under the QPSK modulation system
1Corresponding TBS size is greater than transmission code rate λ under the 16QAM modulation system
2Target signal to noise ratio maximum when corresponding TBS is big or small is as target signal to noise ratio β
0, eSubstitution formula (1) is obtained the authorization power threshold value
e, α wherein
eBe the gain factor corresponding with spreading factor;
β
e＝β
0，e+α
e+Δ
harq (1)。
9. according to claim 6 or 7 or 8 described high speed uplink packet access E-TFC choice devices, it is characterized in that described E-TFC selected cell specifically comprises:
Read module is used for reading the base station to user's authorization power from control channel;
Search module, be used for licensing under the modulation system of E-TFC, find out in TBS subset corresponding to CU time slot and satisfy that described authorization power requires and the maximum TBS adaptive with the second physical resource of configuration, the second physical resource of described configuration comprises: transmission code rate scope corresponding to the modulation system of using with the described user of licensing to, data volume size and user's side maximum transmission power of user side buffering area.
10. high speed uplink packet according to claim 9 accesses the E-TFC choice device, it is characterized in that the described module of searching specifically comprises:
Choose submodule, be used in TBS subset corresponding to CU time slot calling first and judging submodule according to one of from big to small selective sequential untreated TBS still;
First judges submodule, be used for transmission code rate scope corresponding to the modulation system used according to the described user of licensing to and the data volume size of user side buffering area and judge whether described TBS is eligible, if, then call the power calculation submodule, choose submodule otherwise call;
The power calculation submodule calculates the transmission code rate of described TBS, determines user's traffic channel transmission power according to the transmission code rate of TBS;
Second judges submodule, be used for judging that whether user's traffic channel transmission power is less than or equal to described authorization power and user's side maximum transmission power, if, determine that then described user's TBS corresponding to traffic channel transmission power is final result, choose submodule otherwise call.
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