CN102026300A - Method for determining transport format combinations and terminal - Google Patents

Abstract

The invention discloses a method for determining transport format combinations and a terminal. The method comprises the following steps of: determining a first enhanced transport format combination (E-TFC) corresponding to quadrature phase shift keying (QPSK) and a second E-TFC corresponding to quadrature amplitude modulation (QAM) according to the specific maximum code rate and the specific minimum code rate of radio resource control (RRC) and the total number of bits loaded on physical channels; determining a code rate corresponding to the maximum authorized transmitting power, and determining a first sub-combination in the first E-TFC and a second sub-combination in the second E-TFC according to the code rate corresponding to the maximum authorized transmitting power and the total number of bits loaded on the physical channels; and in the first sub-combination and the second sub-combination, determining the size of the maximum supported transmission block of an MAC-ePDU (Media Access Control-entity Protocol Data Unit). The accuracy and the efficiency of terminal equipment for supporting high speed uplink packet access (HSUPA) business are improved through the invention.

Description

Determine the method and the terminal of transport format combination set set

Technical field

The present invention relates to the communications field, in particular to a kind of method and terminal of definite transport format combination set set.

Background technology

Along with the development and the development of technology of society, mobile communication system needs and can provide the interactive multimedia business that voice, image and data etc. are integrated as fixed network.Therefore, Wideband Code Division Multiple Access (WCDMA) as 3G (Third Generation) Moblie three big mainstream standard inserts (Wideband Code Division Multiple Access, abbreviate WCDMA as), code division multiple access inserts (Code Division Multiple Access, abbreviate CDMA as) 2000 and TD SDMA insert (Time Division Synchronous Code DivisionMultiple Access, abbreviate TD-SCDMA as) all carrying out the technology enhancing, to adapt to mobile multi-media service in the requirements at the higher level aspect data rate and the class of business.

In order to satisfy the demand of high speed upstream data services such as interaction multimedia better, the TD-SCDMA system has introduced high speed uplink packet access (HighSpeed Uplink Packet Access is designated hereinafter simply as HSUPA) technology in Release 6 standards.The HSUPA technology is the set of some Radio Link enhancement techniques, and its target is that the covering by throughput that improves the sub-district and high data rate improves uplink air interface capacity utilance and terminal use's experience.In order to realize above-mentioned target, the key technology that HSUPA adopts mainly comprises: enhanced transport format combination (Enhanced-Transport FormatCombination, abbreviate E-TFC as) calculating and selection, based on automatic repeat requests technology of dispatching method, the rapid mixing of Node B (Hybrid Automatic RepeatRequest abbreviates HARQ as) and high order modulation technology etc.The introducing of these technology has improved the up peak rate of TD-SCDMA system greatly, reduced the time delay of air interface, increased the capacity of system, improved the utilance of uplink spectrum, can support Internet Protocol (Internet Protocol abbreviates IP as) business such as interactive game and mobile multimedia better.

When realizing the HSUPA function in terminal equipment, the calculating of E-TFC and selection are the important steps in the protocol stack processing procedure, also are one of maximum difficult points, and the TFCI selection of it and general service is different.It is the selection of transformat when being multiplexed on the physical channel at different transmission channels that the TFCI of general service selects, and the selection of E-TFC is at the multiplexing back of logic channel medium access control (Media Access Control, abbreviate MAC as) selection of layer transmission block size, need calculate and judge according to the resource information of authorizing.The main difficult point problem that needs in the correlation technique to solve is: under scheduled transmission and non-scheduled transmission mode, how according to authorizing or the physical resource of appointment, select suitable with it maximum transport block size and modulation system by calculating.

At third generation partner program (3rd Generation Partnership Project, abbreviate 3GPP as) among the English agreement TS25.321, only there are some comparatively general literal and false code to describe and provided general rule and the implementation that to follow when E-TFC selects, and the committed step in E-TFC calculating and the selection, promptly, how to determine the mapping relations between maximum transmit power and the equivalent code check, in English agreement and Chinese edition industry standard and existing patent documentation, all do not provide detailed implementation.

Summary of the invention

Be difficult to propose the present invention at the HSUPA business in the TD-SCDMA system in the correlation technique by the problem of calculating the adaptive maximum transport block size of selection and physical resource, for this reason, main purpose of the present invention is to provide a kind of definite transport format combination set (TransportFormat Combination Set, abbreviate TFCs as) scheme of set, one of to address the above problem at least.

To achieve these goals, according to an aspect of the present invention, provide a kind of method of definite TFCs set.

Method according to definite TFCs set according to the present invention comprises: according to the total number of bits of maximal rate, minimum code rate and the physical channel carrying of radio resource control RRC appointment, determine corresponding to first enhanced transport format combination E-TFC set of Quadrature Phase Shift Keying QPSK with corresponding to the 2nd E-TFC set of quadrature amplitude modulation QAM; Determine the maximum transmitting power corresponding code rate of authorizing, and determine first subclass in the E-TFC set and second subclass in the 2nd E-TFC set according to the total number of bits of maximum mandate transmitting power corresponding code rate and physical channel carrying; The protocol Data Unit MAC-e PDU transmission block size of the media access control layer entity of definite maximum of supporting in first subclass and second subclass.

Preferably, determine that the maximum transmitting power corresponding code rate of authorizing comprises: according to absolute grant value and spreading factor, determine the maximum gain factor, the maximum gain factor is authorized transmitting power corresponding to maximum; According to the corresponding relation between gain factor and the code check, determine the maximum transmitting power corresponding code rate of authorizing.

Preferably, determine that according to maximum mandate transmitting power corresponding code rate first subclass and second subclass comprise: all during an E-TFC is gathered satisfy λ _Min* R _e≤ TB_Size≤λ _{E, max}* R _eTransmission block be defined as first subclass, wherein, λ _{E, max}Be corresponding code rate, λ _MinBe the minimum code rate of RRC appointment, R _eBe the total number of bits that physical channel carried, TB_Size is the transmission block size; In the 2nd E-TFC set all are satisfied λ _Min* R _e≤ TB_Size≤λ _{E, max}* R _eTransmission block be defined as second subclass.

Preferably, the MAC-e PDU transmission block size of determining the maximum of support in first subclass and second subclass comprises: determine the call number k of transmission block size in first subclass and second subclass, and determine the MAC-ePDU transmission block size of the maximum of support according to call number k.

Preferably, determine that according to call number k the MAC-e PDU transmission block size of the maximum of support comprises:, then in first subclass, determine the MAC-e PDU transmission block size of the maximum of support if call number k only belongs to first subclass; If call number k only belongs to second subclass, then in second subclass, determine the MAC-e PDU transmission block size of the maximum of support; If call number k belongs to first subclass and second subclass, the transmitting power that then compares first subclass and second subclass, if the transmitting power of second subclass is lower, then in second subclass, determine the MAC-e PDU transmission block size of the maximum of support, otherwise, the MAC-e PDU transmission block size of definite maximum of supporting in first subclass.

Preferably, determine that E-TFC set and the 2nd E-TFC set comprise: all are satisfied λ _Min* R _e≤ TB_Size＜λ _Max* R _eThe transmission block corresponding to the QPSK modulation system be defined as E-TFC set, wherein, λ _MaxBe the maximal rate of RRC appointment, λ _MinBe the minimum code rate of RRC appointment, R _eBe the total number of bits that physical channel carried, TB_Size is the transmission block size; All are satisfied λ _Min* R _e≤ TB_Size＜λ _Max* R _eThe transmission block corresponding to qam mode be defined as the 2nd E-TFC set.

To achieve these goals, according to a further aspect in the invention, provide a kind of terminal.

Terminal according to the present invention comprises: first determination module, be used for maximal rate, minimum code rate according to the radio resource control RRC appointment and the total number of bits of physical channel carrying, determine corresponding to first enhanced transport format combination E-TFC set of Quadrature Phase Shift Keying QPSK with corresponding to the 2nd E-TFC set of quadrature amplitude modulation QAM; Second determination module is used for determining the maximum transmitting power corresponding code rate of authorizing; The 3rd determination module is used for determining first subclass of E-TFC set and second subclass in the 2nd E-TFC set according to the total number of bits of maximum mandate transmitting power corresponding code rate and physical channel carrying; The 4th determination module is used for the protocol Data Unit MAC-e PDU transmission block size at the media access control layer entity of first subclass and the definite maximum of supporting of second subclass.

Preferably, second determination module comprises: first determines submodule, is used for determining the maximum gain factor according to absolute grant value and spreading factor that the maximum gain factor is authorized transmitting power corresponding to maximum; Second determines submodule, is used for according to the corresponding relation between gain factor and the code check, determines the maximum transmitting power corresponding code rate of authorizing.

Preferably, the 3rd determination module comprises: the 3rd determines submodule, and all that are used for E-TFC set satisfy λ _Min* R _e≤ TB_Size≤λ _{E, max}* R _eTransmission block be defined as first subclass, wherein, λ _{E, max}Be corresponding code rate, λ _MinBe the minimum code rate of RRC appointment, R _eBe the total number of bits that physical channel carried, TB_Size is the transmission block size; The 4th determines submodule, and all that are used for the 2nd E-TFC set satisfy λ _Min* R _e≤ TB_Size≤λ _{E, max}* R _eTransmission block be defined as second subclass.

Preferably, the 4th determination module comprises: the 5th determines submodule, is used for the call number k in first subclass and the definite transmission block size of second subclass; The 6th determines submodule, is used for determining according to call number k the MAC-e PDU transmission block size of the maximum of support.

By the present invention, employing is determined the maximum pairing code check of transmitting power of authorizing by the mapping relations between gain factor and the code check, and determine the mode of maximum transport block size with this, the HSUPA business in the TD-SCDMA system in the correlation technique of having solved is difficult to the problem selected with the adaptive maximum transport block size of physical resource by calculating, and then reach accuracy and efficient when improving terminal equipment in the TD-SCDMA system and supporting that HSUPA is professional, and, realize that simple E-TFC calculates and the effect of selecting.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:

Fig. 1 is the flow chart according to the method for definite TFCs set of the embodiment of the invention;

Fig. 2 is the E-TFC calculating and the schematic diagram of selecting according to the embodiment of the invention;

Fig. 3 is the gain factor β according to the embodiment of the invention _eWith code check λ _eBetween the schematic diagram of relation;

Fig. 4 is the structured flowchart according to the terminal of the embodiment of the invention;

Fig. 5 is the concrete structured flowchart according to the terminal of the embodiment of the invention.

Embodiment

Functional overview

Consider and be difficult in the correlation technique select and the adaptive maximum transport block size of physical resource by calculating, the invention provides a kind of scheme of definite TFCs set, the treatment principle of this scheme is as follows: according to Radio Resource control (Radio Resource Control, abbreviate RRC as) maximal rate of appointment, the total number of bits of minimum code rate and physical channel carrying, determine corresponding to Quadrature Phase Shift Keying (Quadrature Phase Shift Keying, abbreviate QPSK as) E-TFC set and corresponding to the 2nd E-TFC set of quadrature amplitude modulation (QuadratureAmplitude Modulation abbreviates QAM as); Determine the maximum transmitting power corresponding code rate of authorizing, and determine first subclass in the E-TFC set and second subclass in the 2nd E-TFC set according to the total number of bits of maximum mandate transmitting power corresponding code rate and physical channel carrying; Protocol Data Unit (MAC-esProtocol data unit abbreviates MAC-e PDU as) the transmission block size of the media access control layer entity of definite maximum of supporting in first subclass and second subclass.By the present invention, the precise and high efficiency when providing a kind of TD-SCDMA of being used for system terminal equipment to support that HSUPA is professional and realize that simple E-TFC calculates and system of selection.

Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.

In following examples, can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions, and, though there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.

Method embodiment

According to embodiments of the invention, provide a kind of method of definite TFCs set.

Fig. 1 is the flow chart according to the method for the definite TFCs set of the embodiment of the invention, and as shown in Figure 1, this method comprises that following step S102 is to step S106:

Step S102 according to the total number of bits of the maximal rate of RRC appointment, minimum code rate and physical channel carrying, determines corresponding to the E-TFC set of QPSK with corresponding to the 2nd E-TFC set of QAM;

Step S104 determines the maximum transmitting power corresponding code rate of authorizing, and determines first subclass in the E-TFC set and second subclass in the 2nd E-TFC set according to the total number of bits of maximum mandate transmitting power corresponding code rate and physical channel carrying;

Step S106, the MAC-e PDU transmission block size of definite maximum of supporting in first subclass and second subclass.

In step S104, determine the maximum transmitting power corresponding code rate of authorizing, be equivalent to the maximal rate of the maximum correspondence of determining gain factor, thereby further constraint is done in set to E-TFC.Determine that the maximum transmitting power corresponding code rate of authorizing comprises: according to absolute grant value and spreading factor, determine the maximum gain factor, the maximum gain factor is authorized transmitting power corresponding to maximum; According to the corresponding relation between gain factor and the code check, determine the maximum transmitting power corresponding code rate of authorizing.

In step S104, in the E-TFC set all are satisfied λ _Min* R _e≤ TB_Size≤λ _{E, max}* R _eTransmission block be defined as first subclass, wherein, λ _{E, max}Be corresponding code rate, λ _MinBe the minimum code rate of RRC appointment, R _eBe the total number of bits that physical channel carried, TB_Size is the transmission block size; In the 2nd E-TFC set all are satisfied λ _Min* R _e≤ TB_Size≤λ _{E, max}* R _eTransmission block be defined as second subclass.

In step S106, the MAC-e PDU transmission block size of determining the maximum of support in first subclass and second subclass comprises: determine the call number k of transmission block size in first subclass and second subclass, and determine the MAC-e PDU transmission block size of the maximum of support according to call number k.

Wherein, determine that according to call number k the MAC-e PDU transmission block size of the maximum of support comprises:, then in first subclass, determine the MAC-e PDU transmission block size of the maximum of support if call number k only belongs to first subclass; If call number k only belongs to second subclass, then in second subclass, determine the MAC-e PDU transmission block size of the maximum of support; If call number k belongs to first subclass and second subclass, then compare the transmitting power under two kinds of modulation systems, thereby the MAC-e PDU transmission block size of the definite maximum that can support, finish the selection of E-TFC, particularly, the transmitting power that compares first subclass and second subclass, if the transmitting power of second subclass is lower, then in second subclass, determine the MAC-e PDU transmission block size of the maximum of support, otherwise, the MAC-e PDU transmission block size of definite maximum of supporting in first subclass.

In step S102, maximal rate, minimum code rate and enhancing-physical uplink channel (Enhanced Physical Uplink Channel according to high-rise appointment, abbreviate E-PUCH as) the physical channel bit sum that carried, determine two E-TFC set (corresponding respectively to QPSK and qam mode), i.e. E-TFC set and the 2nd E-TFC set.The method of determining E-TFC set and the 2nd E-TFC set comprises: all are satisfied λ _Min* R _e≤ TB_Size＜λ _Max* R _eThe transmission block corresponding to the QPSK modulation system be defined as E-TFC set, wherein, λ _MaxBe the maximal rate of RRC appointment, λ _MinBe the minimum code rate of RRC appointment, R _eBe the total number of bits that physical channel carried, TB_Size is the transmission block size; All are satisfied λ _Min* R _e≤ TB_Size＜λ _Max* R _eThe transmission block corresponding to qam mode be defined as the 2nd E-TFC set.

Be described in detail below in conjunction with the implementation procedure of example the embodiment of the invention.

Fig. 2 is that as shown in Figure 2, the realization that E-TFC selects comprises following three independent step according to the E-TFC calculating of the embodiment of the invention and the schematic diagram of the method for selecting:

Step S1 selects the present logical channel set that needs to send data;

Step S2 determines the TFCs set that physical resource can be supported;

Step S3 in the scope that authorization resources allows, selects maximum logic channel multiplexed combinations collection.

Wherein, the implementation method of step S1 and step S3 is in English agreement and the existing associated description of Chinese edition industry standard.

Below to E-TFC calculate with selection course in, definite method of the TFCs set that physical resource can be supported, promptly step S2 is described in detail, wherein, qam mode is that example describes with the 16QAM modulation system.

One, determines the E-TFC set, comprising: corresponding to the E-TFC set C of QPSK modulation system ₁With E-TFC set C corresponding to the 16QAM modulation system ₂Wherein, C ₁Be E-TFC set, C ₂Be the 2nd E-TFC set.

(for example, time slot and code channel) distribution condition is determined E-TFC set C according to physical channel resources ₁(corresponding to the QPSK modulation system) and C ₂(corresponding to the 16QAM modulation system), wherein, the code check in each set all need be between the maximal rate and minimum code rate of RRC appointment (comprising minimum code rate).These two set will be used for distributed time slot and code channel resource, simultaneously, and the resource consistence that time slot that the user uses and channel code must and distribute.In addition, user's spreading factor can not change.For the scheduling type resource, the user is when the maximal rate of selecting permission to use and minimum code rate, also need to consider to strengthen dedicated channel (EnhancedDedicated Channel, abbreviate enhancing ascending control channel (the Enhanced-Up Control Channel of E-DCH as, abbreviate the current value of E-UCCH number indication (E-UCCH Number Indicator abbreviates ENI as) as.

Be example in the scheduled transmission mode below, E-TFC set C is described ₁(or C ₂) definite process.Suppose S _eBe the pairing transmission block size of selecting of E-TFC, R _eBe the total number of bits that physical channel E-PUCH is carried, then code check is defined as

${\mathrm{\λ}}_e=\frac{S_e}{R_e}---\left(1\right)$

Utilize E-DCH insertion authority channel (E-DCH Access Grant Channel, abbreviating E-AGCH as) Entitlement Control Message that carried is (for example, code channel resource relevant information (Code Resource Related Information, abbreviate CRRI as), time interval resource relevant information (Timeslot Resource Related Information, abbreviate TRRI as), spreading factor and ENI etc.), can convert out entrained bit number in the E-DCH burst, then, (for example deduct band inner control signaling, E-UCCH and transmitting power control (TransmitPower Control, abbreviate TPC as)) shared bit number, can obtain R _eValue.

The maximal rate λ of RRC appointment _MaxWith minimum code rate λ _MinBe included among the E-PUCH Info of RB_SETUP message, as shown in table 1.

The code rate information that comprises among the E-PUCH Info of table 1 RB_SETUP message

According to λ _Min, λ _MaxAnd R _eValue is determined E-TFC set C ₁And C ₂, C ₁And C ₂In the transmission block size satisfy following formula:

λ _min×R _e≤TB_Size＜λ _max×R _e (2)

For non-scheduled transmission mode, the physical channel resources configuration is specified by RB_SETUP message, and E-TFC gathers C ₁And C ₂Definite process and scheduling mode similar.

Two, determine the maximum transmitting power corresponding code rate of authorizing, and then determine set C ₁And C ₂Subset D ₁And D ₂Wherein, D ₁Be first subclass, D ₂Be second subclass.

Under the scheduled transmission mode, from set C ₁And C ₂In determine subset D ₁And D ₂The time, the required transmitting power of subclass should be less than or equal to the maximum transmitting power of authorizing, and wherein, the maximum transmitting power of authorizing need be considered following parameter: power excursion, P in the HARQ attribute under the stream Y _E-baseThe β value relevant under (the closed power value that subscriber equipment (User Equipment abbreviates UE as) and node (Node) B safeguard), path loss and QPSK and the 16QAM modulation system with TFCs.

The computational methods of E-PUCH transmitting power are as shown in Equation (3):

P _E-PUCH＝P _e-base+L+β _e (3)

Below the parameter that occurs in the following formula is specifically described:

P _E-PUCHBe the E-PUCH channel transmitting power.

P _E-baseBe a closed loop value of UE and Node B maintenance, whenever receiving all can increase or reduce the certain numerical value Δ after TPC orders _E-baseUnder the scheduled transmission mode, the TPC order is carried by E-AGCH, and under non-scheduled transmission mode, the TPC order is carried by E-DCH HARQ indicating channel (E-DCH Hybrid ARQ Indicator Channel abbreviates E-HICH as).After " up " order that receives TPC, P _E-baseOn the basis of original numerical value, increase Δ _E-baseAfter " down " order that receives TPC, P _E-baseOn the basis of original numerical value, reduce Δ _E-baseΔ _E-baseThe size of value is disposed by high level.

L is a path loss, by measuring beacon physical channel.

β _eBe the gain factor of E-PUCH channel, its computational process is relevant with E-PUCH physical resource, modulation system and the HARQ power excursion of the E-TFC transmission block size of selecting, distribution.

Work as β _e=(absolute grant value+α _e) time, the transmitting power of E-PUCH reaches the maximum transmitting power of authorizing, and wherein, the absolute grant value is the absolute grant performance number that the E-AGCH channel is carried, α _eSpreading factor (the SF that is adopted with E-PUCH _E-PUCH) between have relation one to one, as shown in table 2.

Table 2 α _eWith SF _E-PUCHBetween corresponding relation

SF E-PUCH	α e(dB)
		1	12
2	9
		4	6
8	3
		16	0

Note β _{E, max}=(absolute grant value+α _e), then determine the maximum pairing code check of transmitting power of authorizing, be equivalent to and determine β _{E, max}Therefore pairing code check, need find gain factor β _eAnd the mapping relations between the code check.

Gain factor β _eObtain according to following each parameter by user terminal:

Selected E-TFC transmission block size;

The resource that takies at the interior E-PUCH of an E-DCH Transmission Time Interval (Transmission Time Interval abbreviates TTI as);

Modulation system (QPSK/16QAM);

HARQ power excursion (Δ _Harq).

High level provides a mapping table that comprises one group of reference point, and this mapping table has defined E-DCH transmission code rate (λ _e) and the relative reference power (β of each Resource Unit _λDB) corresponding relation between.For QPSK and two kinds of modulation systems of 16QAM, a corresponding with it mapping table is arranged respectively, this corresponding relation is included among the E-TFCS info of RB_SETUP message, and is as shown in table 3.

Corresponding relation (QPSK/16QAM) between table 3 E-DCH transmission code rate and the relative reference power

For certain modulation system (QPSK or 16QAM), high-rise maximum and minimum value by signaling designated reference code check are designated as λ respectively _MaxAnd λ _Min, then for given λ _e, have two value λ ₀And λ ₁, satisfy following relationship:

If λ _Min≤ λ _e＜λ _Max, in the λ of all high-level signaling appointments value, satisfy λ≤λ _eThe λ maximum of relation is designated as λ ₀In the λ of all high-level signaling appointments value, satisfy λ＞λ _eThe λ minimum value of relation is designated as λ ₁

Otherwise, if λ _e＜λ _Min, then make λ ₀=λ _Min, and in the λ of all high-level signaling appointments value, satisfy λ＞λ _MinThe λ minimum value of relation is designated as λ ₁If λ _e〉=λ _Max, then make λ ₁=λ _Max, and, satisfy λ＜λ in the λ of all high-level signaling appointments value _MaxThe λ maximum of relation is designated as λ ₀

Above-mentioned steps has been determined λ _eMinimum interval [λ ₀, λ ₁), i.e. λ ₀≤ λ _e＜λ ₁By question blank 3, can obtain high-level signaling specified and λ ₀And λ ₁Corresponding relative reference power is designated as respectively

With

, then for selected E-TFC and E-PUCH resource collection, the β value of normalization (each Resource Unit) can be expressed as:

${\mathrm{\β}}_{0,e}={\mathrm{\β}}_{{\mathrm{\λ}}_0}+\frac{{\mathrm{\β}}_{{\mathrm{\λ}}_1}-{\mathrm{\β}}_{{\mathrm{\λ}}_0}}{{\mathrm{\λ}}_1-{\mathrm{\λ}}_0}({\mathrm{\λ}}_e-{\mathrm{\λ}}_0)---\left(4\right)$

The geometry implication of formula (4) is: with

With

For end points is determined straight line, (λ _e, β _{0, e}) be the point on this straight line.By β _{0, e}, α _eAnd Δ _Harp, can calculate gain factor β _eFor

β _e＝β _0，e+α _e+Δ _harq (5)

Order

${\mathrm{\β}}_{{\mathrm{\λ}}_i}^{\′}={\mathrm{\β}}_{{\mathrm{\λ}}_i}+{\mathrm{\α}}_e+{\mathrm{\Δ}}_{\mathrm{harq}},i=\mathrm{0,1}$ (6)

Then, can obtain formula (4) substitution formula (5)

${\mathrm{\β}}_e={\mathrm{\β}}_{{\mathrm{\λ}}_0}^{\′}+\frac{{\mathrm{\β}}_{{\mathrm{\λ}}_1}^{\′}-{\mathrm{\β}}_{{\mathrm{\λ}}_0}^{\′}}{{\mathrm{\λ}}_1-{\mathrm{\λ}}_0}({\mathrm{\λ}}_e-{\mathrm{\λ}}_0)---\left(7\right)$

The geometry implication of formula (7) is: with the straight line shown in the formula (4) along Y-axis translation (α _e+ Δ _Harq), the slope of straight line remains unchanged.So far, can obtain gain factor β _eWith code check λ _eBetween mapping relations.

Table 3 has provided under QPSK and the 16QAM modulation system, β _{0, e}8 reference values and corresponding with it code check λ _e8 reference values; Utilize formula (3), can obtain gain factor β _e8 reference values; Fig. 3 is the gain factor β according to the embodiment of the invention _eWith code check λ _eBetween the schematic diagram of relation, as shown in Figure 3, with code check λ _eBe abscissa, gain factor β _eBe ordinate, utilize (λ _e, β _e) 8 reference points can draw out 7 sections broken lines.

In the specific implementation process, determine maximum authorize transmitting power the method for corresponding code check as follows:

Step1: according to absolute grant value and α _e, calculate β _{E, max}=(absolute grant value+α _e);

Step2: according to α _eAnd Δ _Harq, utilize formula (5), the β that high level is provided _{0, e}8 reference values convert and become gain factor β _e8 reference values;

Step3: with β _{E, max}With the β that obtains among the Step2 _e8 reference values compare, determine β _{E, max}The broken line interval at place is designated as

And then the interval of definite code check (λ ' ₀, λ ' ₁);

Step4: utilize formula (7), the anti-β that solves _{E, max}Pairing code check λ _{E, max}

It should be noted that Step1～Step4 carries out separately at QPSK and two kinds of modulation systems of 16QAM.

So far, respectively at QPSK and 16QAM modulation system, determined maximum mandate transmitting power β _{E, max}Pairing code check λ _{E, max}, according to λ _{E, max}And R _eValue is to E-TFC set C ₁And C ₂Do further constraint, the transmission block size after the constraint satisfies

λ _min×R _e≤TB_Size≤λ _e，max×R _e (8)

Formula (8) has promptly been determined set C ₁And C ₂Subset D ₁And D ₂

Three, at set D ₁And D ₂In determine the MAC-e PDU transmission block size of the maximum that can support.

At set D ₁And D ₂In, determine the call number k of transmission block size, the call number k of transmission block size, its span is with reference to the English agreement TS25.321 of 3GPP (Medium AccessControl protocol specification, Release 8) in table BC.1, its effect is according to the unique definite transmission block size of this call number, be used to carry the user data of required transmission, call number k according to the transmission block size of determining, determine the MAC-ePDU transmission block size of the maximum of support, specifically be divided into following three kinds of situations:

If k only belongs to set D ₁, then select the QPSK modulation system, that is, select D ₁The MAC-e PDU transmission block size of the middle maximum of supporting;

If k only belongs to set D ₂, then select the 16QAM modulation system, that is, select D ₂The MAC-e PDU transmission block size of the middle maximum of supporting;

If k belongs to set D simultaneously ₁And D ₂, then,, then select the 16QAM modulation system if adopt the required transmitting power of 16QAM modulation system low, that is, select D ₂The MAC-e PDU transmission block size of the middle maximum of supporting, otherwise, select the QPSK modulation system, that is, select D ₁The MAC-e PDU transmission block size of the middle maximum of supporting.

In above-mentioned deterministic process, modulation system (QPSK or 16QAM) is to decide naturally along with determining of call number k.If k only belongs to set D ₁Span, the so final modulation system of determining is QPSK; If k only belongs to set D ₂Span, the so final modulation system of determining is 16QAM; If k satisfies set D simultaneously ₁And D ₂Span, the so final modulation system of determining is corresponding to the transmitting power junior.

Device embodiment

According to embodiments of the invention, provide a kind of terminal.

Fig. 4 is the structured flowchart according to the terminal of the embodiment of the invention, and as shown in Figure 4, this device comprises: first determination module 42, second determination module 44, the 3rd determination module 46, the 4th determination module 48 are elaborated to this structure below.

First determination module 42 is used for maximal rate, minimum code rate according to the radio resource control RRC appointment and the total number of bits of physical channel carrying, determines corresponding to the E-TFC set of QPSK with corresponding to the 2nd E-TFC set of QAM; Second determination module 44 is used for determining the maximum transmitting power corresponding code rate of authorizing; The 3rd determination module 46 is connected to first determination module 42 and second determination module 44, is used for determining first subclass of E-TFC set and second subclass in the 2nd E-TFC set according to the total number of bits of maximum mandate transmitting power corresponding code rate and physical channel carrying; The 4th determination module 48 is connected to the 3rd determination module 46, is used for the MAC-e PDU transmission block size in first subclass and the definite maximum of supporting of second subclass.

Fig. 5 is the concrete structured flowchart according to the terminal of the embodiment of the invention, and as shown in Figure 5, second determination module 44 comprises: first determines submodule 502, second definite submodule 50, below this structure is elaborated.

First determines submodule 502, is used for determining the maximum gain factor according to absolute grant value and spreading factor that the maximum gain factor is authorized transmitting power corresponding to maximum; Second determines that submodule 504 is connected to first and determines submodule 502, is used for according to the corresponding relation between gain factor and the code check, determines the maximum transmitting power corresponding code rate of authorizing.

The 3rd determination module 46 comprises: the 3rd determines submodule the 506, the 4th definite submodule 508, below this structure is elaborated.

The 3rd determines submodule 506, and all that are used for E-TFC set satisfy λ _Min* R _e≤ TB_Size≤λ _{E, max}* R _eTransmission block be defined as first subclass, wherein, λ _{E, max}Be corresponding code rate, λ _MinBe the minimum code rate of described RRC appointment, R _eBe the total number of bits that physical channel carried, TB_Size is the transmission block size; The 4th determines submodule 508, and all that are used for the 2nd E-TFC set satisfy λ _Min* R _e≤ TB_Size≤λ _{E, max}* R _eTransmission block be defined as second subclass.

The 4th determination module 48 comprises: the 5th determines submodule the 510, the 6th definite submodule 512.Below this structure is elaborated.

The 5th determines submodule 510, is used for the call number k in first subclass and the definite transmission block size of second subclass; The 6th determines that submodule 512 is connected to the 5th and determines submodule 510, is used for determining according to call number k the MAC-e PDU transmission block size of the maximum of support.

In sum,, improved accuracy and efficient when terminal equipment is supported the HSUPA business in the TD-SCDMA system by the present invention, and, realized that simple E-TFC calculates and selection.

Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. the method for a definite transport format combination set TFCs set is characterized in that, comprising:

According to the total number of bits of the maximal rate of radio resource control RRC appointment, minimum code rate and physical channel carrying, determine corresponding to first enhanced transport format combination E-TFC set of Quadrature Phase Shift Keying QPSK with corresponding to the 2nd E-TFC set of quadrature amplitude modulation QAM;

Determine the maximum transmitting power corresponding code rate of authorizing, and determine first subclass in the described E-TFC set and second subclass in described the 2nd E-TFC set according to described maximum total number of bits of authorizing transmitting power corresponding code rate and physical channel carrying;

The protocol Data Unit MAC-e PDU transmission block size of the media access control layer entity of definite maximum of supporting in described first subclass and described second subclass.

2. method according to claim 1 is characterized in that, determines that the described maximum transmitting power corresponding code rate of authorizing comprises:

According to absolute grant value and spreading factor, determine the maximum gain factor, the described maximum gain factor is corresponding to the described maximum transmitting power of authorizing;

According to the corresponding relation between gain factor and the code check, determine the described maximum transmitting power corresponding code rate of authorizing.

3. method according to claim 2 is characterized in that, determines that according to the described maximum transmitting power corresponding code rate of authorizing described first subclass and described second subclass comprise:

In the described E-TFC set all are satisfied λ _Min* R _e≤ TB_Size≤λ _{E, max}* R _eTransmission block be defined as described first subclass, wherein, λ _{E, max}Be described corresponding code rate, λ _MinBe the minimum code rate of described RRC appointment, R _eBe the total number of bits that physical channel carried, TB_Size is the transmission block size;

In described the 2nd E-TFC set all are satisfied λ _Min* R _e≤ TB_Size≤λ _{E, max}* R _eTransmission block be defined as described second subclass.

4. method according to claim 1 is characterized in that, determines that in described first subclass and described second subclass MAC-e PDU transmission block size of the maximum of support comprises:

In described first subclass and described second subclass, determine the call number k of transmission block size, and determine the MAC-ePDU transmission block size of the maximum of support according to described call number k.

5. method according to claim 4 is characterized in that, determines that according to described call number k the MAC-e PDU transmission block size of the maximum of support comprises:

If described call number k only belongs to described first subclass, then in described first subclass, determine the MAC-e PDU transmission block size of the maximum of support;

If described call number k only belongs to described second subclass, then in described second subclass, determine the MAC-e PDU transmission block size of the maximum of support;

If described call number k belongs to described first subclass and described second subclass, the transmitting power of then more described first subclass and described second subclass, if the transmitting power of described second subclass is lower, then in described second subclass, determine the MAC-e PDU transmission block size of the maximum of support, otherwise, the MAC-e PDU transmission block size of definite maximum of supporting in described first subclass.

6. method according to claim 1 is characterized in that, determines that described E-TFC set and described the 2nd E-TFC set comprise:

All are satisfied λ _Min* R _e≤ TB_Size＜λ _Max* R _eThe transmission block corresponding to the QPSK modulation system be defined as described E-TFC set, wherein, λ _MaxBe the maximal rate of described RRC appointment, λ _MinBe the minimum code rate of described RRC appointment, R _eBe the total number of bits that physical channel carried, TB_Size is the transmission block size;

All are satisfied λ _Min* R _e≤ TB_Size＜λ _Max* R _eThe transmission block corresponding to qam mode be defined as described the 2nd E-TFC set.

7. a terminal is characterized in that, comprising:

First determination module, be used for maximal rate, minimum code rate according to the radio resource control RRC appointment and the total number of bits of physical channel carrying, determine corresponding to first enhanced transport format combination E-TFC set of Quadrature Phase Shift Keying QPSK with corresponding to the 2nd E-TFC set of quadrature amplitude modulation QAM;

Second determination module is used for determining the maximum transmitting power corresponding code rate of authorizing;

The 3rd determination module is used for determining first subclass of described E-TFC set and second subclass in described the 2nd E-TFC set according to the described maximum total number of bits of transmitting power corresponding code rate and physical channel carrying of authorizing;

The 4th determination module is used for the protocol Data Unit MAC-e PDU transmission block size at the media access control layer entity of described first subclass and the definite maximum of supporting of described second subclass.

8. terminal according to claim 7 is characterized in that, described second determination module comprises:

First determines submodule, is used for determining the maximum gain factor according to absolute grant value and spreading factor, and the described maximum gain factor is corresponding to the described maximum transmitting power of authorizing;

Second determines submodule, is used for according to the corresponding relation between gain factor and the code check, determines the described maximum transmitting power corresponding code rate of authorizing.

9. terminal according to claim 7 is characterized in that, described the 3rd determination module comprises:

The 3rd determines submodule, and all that are used for described E-TFC set satisfy λ _Min* R _e≤ TB_Size≤λ _{E, max}* R _eTransmission block be defined as described first subclass, wherein, λ _{E, max}Be described corresponding code rate, λ _MinBe the minimum code rate of described RRC appointment, R _eBe the total number of bits that physical channel carried, TB_Size is the transmission block size;

The 4th determines submodule, and all that are used for described the 2nd E-TFC set satisfy λ _Min* R _e≤ TB_Size≤λ _{E, max}* R _eTransmission block be defined as described second subclass.

10. terminal according to claim 7 is characterized in that, described the 4th determination module comprises:

The 5th determines submodule, is used for the call number k in described first subclass and the definite transmission block size of described second subclass;

The 6th determines submodule, is used for determining according to described call number k the MAC-e PDU transmission block size of the maximum of support.

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