CN102571285A - Method for scheduling user terminal uplink data rate and apparatus thereof - Google Patents

Method for scheduling user terminal uplink data rate and apparatus thereof Download PDF

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Publication number
CN102571285A
CN102571285A CN201210020993XA CN201210020993A CN102571285A CN 102571285 A CN102571285 A CN 102571285A CN 201210020993X A CN201210020993X A CN 201210020993XA CN 201210020993 A CN201210020993 A CN 201210020993A CN 102571285 A CN102571285 A CN 102571285A
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main flow
user terminal
subchannel
auxilliary stream
grant value
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CN102571285B (en
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铁晓磊
吴更石
花梦
杨毅
焦淑蓉
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2013/070315 priority patent/WO2013113254A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a method for scheduling user terminal uplink data rate and an apparatus thereof. The method comprises the following steps: a base station receives a double-flow signal sent by a user terminal by employing a UL MIMO emission mode, a main flow signal in the double-flow signal is transmitted in a main flow equivalence sub-channel, and an auxiliary flow signal in the double-flow signal is transmitted in an auxiliary flow equivalence sub-channel; the base station configures a main flow scheduling permission value corresponding to the main flow equivalence sub-channel and calculates an auxiliary flow scheduling permission value corresponding to the auxiliary flow equivalence sub-channel according to a value of a signal to noise ratio of the main flow equivalence sub-channel to the auxiliary flow equivalence sub-channel; the base station controls data rate of the user terminal in the main flow equivalence sub-channel through the main flow scheduling permission value and controls data rate of the user terminal in the auxiliary flow equivalence sub-channel through the auxiliary flow scheduling permission value. By utilizing a technical scheme of the invention, purposes of reducing system interference and ensuring system error code performance under the UL MIMO emission mode can be realized.

Description

The method and apparatus of a kind of dispatched users terminal upstream data rate
Technical field
The present invention relates to communication technical field, be specifically related to the method and apparatus of a kind of dispatched users terminal upstream data rate.
Background technology
WCDMA (Wideband Code Division Multiple Access, WCDMA) is a broadband direct sequence spread spectrum codes division multiple access system.Because WCDMA is the system of identical networking; Though used scrambler and spread spectrum to carry out code division multiplexing; But because there is multipath effect in wireless channel, so the uplink meeting of UE (User Equipment, subscriber equipment) causes the uplink interference to Serving cell and other neighbor cell.This interference can cause the uplink interference lifting (RoT, Rise overThermal) of Serving cell.In the base station NodeB side; Demodulation threshold C/I is certain; And C can not infinitely be increased by the restriction of terminal transmit power, therefore for guaranteeing the demodulation performance of base station, with Interference Control under certain thresholding; This just needs the base station to regulate and limit the transmitting power of each UE, thereby RoT is controlled under certain thresholding.
At HSUPA (high speed uplink packet access; High Speed Uplink Packet inserts) in; Different E-DPDCH (Enhanced Dedicated Physical Data Channel; The enhancing Dedicated Physical Data Channel) transmitting power of DPCCH (Dedicated Physical Control Channel, Dedicated Physical Control Channel) influences the received signal to noise ratio of E-DPDCH relatively.Under the different signal to noise ratio conditions, (Transport Block, size TB) is also different for the transmission block that E-DPDCH can transmit.Because E-DPDCH data carried by data amount has bigger variation, this just makes E-DPDCH in the uplink interference of receiving terminal (NodeB) bigger excursion arranged, and the transmitting power that therefore limits UE mainly realizes through the transmitting power of control E-DPDCH.And this mainly is to realize through the higher uplink bit rate that limits (scheduling) UE.
Among the HSUPA under non-MIMO (Multiple Input Multiple Output, the multiple-input and multiple-output) pattern, NodeB can control the transmitting power of UE through the data rate scheduling mechanism, thereby reaches the purpose of control RoT.Concrete scheduling process can be described below:
At first, NodeB guarantees the stability of DPCCH in receiving terminal (being the NodeB side) receptivity through the mode that inner loop power control and exterior ring power control combine.
Secondly, NodeB is provided with the transmitting power biasing of E-DPDCH with respect to DPCCH, controls the uplink interference lifting of UE with this.The E-DPDCH received signal to noise ratio that the distinct transmit power bias is corresponding different; The index value of transmitting power biasing is called as scheduling grant value SchG (Scheduled Grant) in the NodeB side, and NodeB controls the uplink interference lifting RoT of UE just through the mode of allocation schedule License Value SchG.
At last; NodeB is handed down to UE with scheduling grant value SchG; Carry out E-TFCI (indication of E-DCH transformat combination) by UE and select, select suitable TB block size and transformat, thereby realize controlling the purpose of UE transmitting power through control UE uplink speed.
UL MIMO (UpLink MIMO, Uplink MIMO) is a research project in the present UTRA R11 version.In the prior art, still there is not the scheme that UL MIMO emission mode reduces interference down, guarantees system's error performance that solves.
Summary of the invention
The embodiment of the invention provides the method and apparatus of a kind of dispatched users terminal upstream data rate, under UL MIMO emission mode, to reduce system interference, to guarantee system's error performance.
For this reason, the embodiment of the invention provides following technical scheme:
The method of a kind of dispatched users terminal upstream data rate comprises:
The base station receives the double-current signal that user terminal adopts up multiple-input and multiple-output UL MIMO emission mode to send, and the main flow signal in the said double-current signal is in main flow equivalence subchannel transmission, and the auxilliary stream signal in the said double-current signal is in the equivalent subchannel transmission of auxilliary stream;
The main flow scheduling grant value that base station configuration main flow equivalence subchannel is corresponding, and based on the signal to noise ratio auxilliary stream scheduling grant value corresponding with the equivalent subchannel of the said auxilliary stream of ratio calculation of the signal to noise ratio of the equivalent subchannel of said auxilliary stream of said main flow equivalence subchannel;
The base station is through the data rate of said main flow scheduling grant value control user terminal at main flow equivalence subchannel, through the data rate of said auxilliary stream scheduling grant value control user terminal at the equivalent subchannel of auxilliary stream.
The device of a kind of dispatched users terminal upstream data rate comprises:
Receiving element; Be used to receive the double-current signal that user terminal adopts up multiple-input and multiple-output UL MIMO emission mode to send; Main flow signal in the said double-current signal is in main flow equivalence subchannel transmission, and the auxilliary stream signal in the said double-current signal is in the equivalent subchannel transmission of auxilliary stream;
Main flow scheduling grant value dispensing unit is used to dispose the corresponding main flow scheduling grant value of main flow equivalence subchannel;
Auxilliary stream scheduling grant value computing unit is used for the signal to noise ratio auxilliary stream scheduling grant value corresponding with the equivalent subchannel of the said auxilliary stream of ratio calculation of the signal to noise ratio of the equivalent subchannel of said auxilliary stream based on said main flow equivalence subchannel;
Mainstream data rate controlled unit is used for through the data rate of said main flow scheduling grant value control user terminal at main flow equivalence subchannel;
Auxilliary stream data rate control unit is used for through the data rate of said auxilliary stream scheduling grant value control user terminal at the equivalent subchannel of auxilliary stream.
The method and apparatus of the dispatched users terminal upstream data rate of the embodiment of the invention carries out differentiated treatment to the upstream data rate of main flow equivalence subchannel and the upstream data rate of the equivalent subchannel of auxilliary stream respectively.For main flow equivalence subchannel, the data rate of the E-DPDCH of UE on main flow equivalence subchannel is directly controlled in the base station through main flow scheduling grant value; For the equivalent subchannel of auxilliary stream; The base station is reference with main flow scheduling grant value earlier; Assist stream scheduling grant value according to main flow equivalence subchannel and the auxilliary ratio calculation that flows the signal to noise ratio between equivalent subchannel, and then control UE in the upstream data rate of assisting the S-E-DPDCH on the equivalent subchannel of stream according to auxilliary stream scheduling grant value.Thereby make main flow E-DPDCH and the error performance of auxilliary stream S-E-DPDCH reach close even par, under the prerequisite that the control up-link is disturbed, guarantee the error performance that UL MIMO emission mode transmits down under the realization UL MIMO emission mode.
Description of drawings
In order to be illustrated more clearly in the application embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously; The accompanying drawing that describes below only is some embodiment that put down in writing among the application, for those of ordinary skills, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of the method for embodiment of the invention dispatched users terminal upstream data rate;
Fig. 2 is the emitting structural sketch map of UL-MIMO;
Fig. 3 is the flow chart that base stations control UE selects main flow equivalence sub-channel data rates in the embodiment of the invention;
Fig. 4 is the flow chart that base stations control UE selects the equivalent sub-channel data rates of auxilliary stream in the embodiment of the invention;
Fig. 5 is the flow chart that calculates auxilliary stream scheduling grant value in the embodiment of the invention;
Fig. 6 is the structural representation of the device of embodiment of the invention dispatched users terminal upstream data rate;
Fig. 7 is the structural representation of auxilliary stream scheduling grant value computing unit in the embodiment of the invention;
Fig. 8 is the structural representation of mainstream data rate controlled unit in the embodiment of the invention;
Fig. 9 is the structural representation of auxilliary stream data rate control unit in the embodiment of the invention.
Embodiment
In order to make those skilled in the art person understand the present invention program better, the embodiment of the invention is done further to specify below in conjunction with accompanying drawing and execution mode.
Method, the Apparatus and system of embodiment of the invention dispatched users terminal upstream data rate through the upstream data rate of main flow scheduling grant value control user terminal at main flow equivalence subchannel, guarantee the transmission reliability and the error performance of main flow equivalence subchannel; For the equivalent subchannel of auxilliary stream; Be reference then with main flow scheduling grant value; Ratio according to the signal to noise ratio between main flow equivalence subchannel and the equivalent subchannel of auxilliary stream; Calculate auxilliary stream scheduling grant value, thereby further pass through the auxilliary upstream data rate that flows equivalent subchannel of auxilliary stream scheduling grant value control, so that the anti-interference and the error performance of auxilliary equivalent subchannel of stream and main flow equivalence subchannel are basic identical.
As shown in Figure 1, be the flow chart of the method for embodiment of the invention dispatched users terminal upstream data rate, comprising:
Step 101, base station receive the double-current signal that user terminal adopts UL MIMO emission mode to send, and the main flow signal in the double-current signal is in main flow equivalence subchannel transmission, and the auxilliary stream signal in the double-current signal is in the equivalent subchannel transmission of auxilliary stream.
User terminal (UE) adopts the UL-MIMO radiation pattern of pilot tone precoding to base station transmit signals, and is as shown in Figure 2, is UL-MIMO emitting structural sketch map.Wherein, 21 is the main flow emitting structural, is used for launching the main flow signal of double-current signal, and the main flow signal is through main flow equivalence subchannel transmission; 22 is auxilliary stream emitting structural, is used for launching the auxilliary stream signal of double-current signal, and auxilliary stream signal is through the equivalent subchannel transmission of auxilliary stream.
As shown in Figure 2, the main flow emitting structural mainly comprises: the control channel S-E-DPCCH of the high speed data channels on the feedback channel HS-DPCCH of control channel DPCCH and E-DPCCH, data channel E-DPDCH, down high-speed data channel HS-DSCH, the auxilliary stream.Wherein, the effect of DPCCH is to be used to carry pilot tone and power control commands, and its transmitting power is adjusted by inner-loop power control and external circule power control, can guarantee the mistake piece performance that receiving terminal (NodeB side) receives; E-DPCCH is used to carry the control information (like transformat, RV version (Redundancy Version, redundancy versions) etc.) of E-DPDCH; E-DPDCH is used to carry upstream data.
Auxilliary stream emitting structural mainly comprises: control channel S-DPCCH, data channel S-E-DPDCH.
Step 102, the corresponding main flow scheduling grant value of base station configuration main flow equivalence subchannel, and based on the signal to noise ratio of main flow equivalence subchannel and the corresponding auxilliary stream scheduling grant value of the auxilliary equivalent subchannel of stream of ratio calculation of the signal to noise ratio of the equivalent subchannel of auxilliary stream.
After the base station received the double-current signal of UE transmission, then the actual conditions according to main flow equivalence subchannel and the equivalent subchannel of auxilliary stream disposed the two corresponding scheduling grant value respectively---main flow scheduling grant value SchG pWith auxilliary stream scheduling grant value SchG s,, and then control main flow and assist the uplink interference lifting that stream causes so that UE selects the data rate of two equivalent subchannels according to the scheduling grant value.Concrete realization can comprise following steps:
At first, be main flow equivalence subchannel arrangements main flow scheduling grant value SchG p
Secondly, calculate the ratio of signal to noise ratio with the signal to noise ratio of the equivalent subchannel of auxilliary stream of main flow equivalence subchannel;
At last, with main flow scheduling grant value SchG pBe foundation, confirm auxilliary stream scheduling grant value SchG according to the ratio of the signal to noise ratio of two equivalent subchannels s
Confirm that about the base station detailed method of the scheduling grant value of two equivalent subchannels sees also the description of subsequent implementation example.
Step 103, base station are through the data rate of main flow scheduling grant value control user terminal at main flow equivalence subchannel, through the data rate of auxilliary stream scheduling grant value control user terminal at the equivalent subchannel of auxilliary stream.
After the scheduling grant value of two equivalent subchannels of base station configuration, just can select the data rate of two equivalent subchannels through said two scheduling grant values control UE.
For main flow equivalence subchannel, as shown in Figure 3, the data rate of UE at main flow equivalence subchannel controlled according to following steps in the base station:
Step 301 is obtained the main flow serving grant value ServG of the main flow equivalence subchannel that user terminal safeguards p, when promptly UE last time is by base station scheduling by the scheduling grant value of base station configuration.
Particularly, the base station can obtain ServG through following dual mode p: a kind of mode is directly to read the scheduling grant value that be the UE configuration last time from inside of base station, and this scheduling grant value is the main flow serving grant value ServG of the current maintenance of UE pAnother kind of mode is to judge the main flow serving grant value ServG of the current maintenance of UE according to the data that the UE that receives sends p
Step 302 is calculated SchG pWith ServG pBetween difference.
Step 303 is judged SchG pWith ServG pBetween difference whether exceed the first preset value allowed band, whether the difference of promptly judging the two greater than first preset value, then according to judged result execution in step 304 or step 305.
If step 304 is SchG pWith ServG pBetween difference greater than first preset value, the base station then with the mode of absolute indices through the E-AGCH channel with SchG pBe sent to UE, so that UE is directly according to SchG pCarry out E-TFCI and select, confirm the data rate of main flow equivalence subchannel.
If step 305 is SchG pWith ServG pBetween difference be not more than first preset value, the base station then sends control signaling to UE through the E-RGCH channel and (is about to SchG pWith respect to ServG pSituation of change be sent to UE, control UE is according to a kind of adjustment main flow serving grant value ServG in UP, DOWN or three kinds of control of the HOLD signaling p), UE is according to control signaling RG pAdjustment ServG p, and as far as possible near SchG p, and then according to adjusted ServG pCarry out E-TFCI and select, confirm the data rate of main flow equivalence subchannel.
Because the scheduling grant value of actual use when carrying out up E-DPDCH emission that the UE side safeguards that a variable Serving_Grant (being called serving grant value ServG), its implication are arranged is UE.Therefore, pass through main flow scheduling grant value SchG in the base station pWhen control UE selects the data rate of main flow equivalence subchannel, need obtain the main flow serving grant value ServG of the current maintenance of UE earlier p, be to adopt to control UE with judgement based on the mode of absolute License Value AG (Absolute Grant), still (RelativeGrant, mode RG) is controlled UE based on the relative grant value in employing.
Need to prove here; Absolute License Value AG is the absolute indices of scheduling grant value SchG, and this index value is 5bits, through descending E-AGCH (E-DCH Absolute Grant Channel; The E-DCH absolute grant channel; Wherein, E-DCH is for strengthening the abbreviation of dedicated channel Enhanced Dedicated Channel) AG is handed down to the UE of appointment, UE can be known the scheduling grant value SchG accordingly with this absolute indices AG through the mode of searching; And upgrade UE and go up the operation License Value of safeguarding, thereby can be according to the selection of the completion of the operation License Value after upgrading data rate.Relative grant value RG is the relative variation of scheduling grant value SchG; It represented this scheduling grant value that is handed down to UE of NodeB than UE at last corresponding HARQ instance (Hybrid Automatic Repeat Request; Mix automatic repeat requests) TTI (the Transmission Time Interval of process; The situation of change of the serving grant value of using Transmission Time Interval); Descending E-RGCH (E-DCH Relative Grant Channel can be passed through in the base station; E-DCH relative authorization channel) issue UP, HOLD or DOWN control signaling to the UE of appointment, UE then adjusts the serving grant value ServG of current maintenance according to the control signaling that receives, specifically comprise: at first the serving grant value ServG according to current maintenance confirms the adjustment step-length with the control signaling; Secondly combine to control signaling and serving grant value ServG is adjusted, so that serving grant value ServG is as far as possible near scheduling grant value SchG according to the adjustment step-length of confirming.Like this, UE just can accomplish the selection of data rate according to adjusted serving grant value ServG.
UE need detect NodeB and whether send AG or RG in each TTI; And according to AG or RG update service License Value ServG; UE carries out E-TFCI restriction and E-TFCI selection according to the ServG after upgrading then; Confirm the size (the TB block size is corresponding with E-TFCI) of transmission block TB, thereby information such as the code channel number of definite E-DPDCH, modulation system are carried out the process that upstream data rate is selected to accomplish base stations control UE.
When the base station adopted the AG mode to control the data rate of UE selection main flow equivalence subchannel, its specific operation process can be described below:
At first, distribute main flow E-RNTI (Radio Network Temporary Identifier) for UE;
Secondly, the absolute indices of main flow E-RNTI and main flow scheduling grant value is encoded according to the coded format of E-AGCH channel, and be sent to UE, so that UE selects the data rate of main flow equivalence subchannel.
When the base station adopted the RG mode to control the data rate of UE selection main flow equivalence subchannel, its specific operation process can be described below:
At first, distribute main flow signature (signature) for UE;
Secondly, main flow signature is encoded according to the coded format of E-RGCH channel with the control signaling, and be sent to UE, so that UE selects the data rate of main flow equivalence subchannel.
Because E-AGCH adds the mode of covering through UE ID (referring to E-RNTI here) CRC to carry out multiplexingly, therefore,, can only carry an AG schedule information in each TTI for an E-AGCH channel.And E-RGCH carries out multiplexingly through different quadrature signature, and therefore, E-RGCH can issue relative scheduling grant information (RG) for a plurality of UE simultaneously in a TTI.For this reason; In the embodiment of the invention; In order to distinguish the base station to the major-minor different scheduling grant values of sending out that flow down, the UE that need be respectively under each UL-MIMO pattern distributes two E-RNTI: main flow E-RNTI and auxilliary stream E-RNTI, is respectively applied for the absolute indices (AG that issues main flow scheduling grant value P) and the auxilliary absolute indices (AG that flows the scheduling grant value S).Similarly, also need be respectively applied for to issue and represent SchG for each UE distributes the signature among two E-RGCH: main flow signature and auxilliary stream signature pWith respect to ServG pThe control signaling (RG of situation of change P) and represent SchG sWith respect to ServG sThe control signaling (RG of situation of change S).
For the equivalent subchannel of auxilliary stream, as shown in Figure 4, the data rate that flows equivalent subchannel is being assisted according to following steps control UE in the base station:
Step 401 is obtained the auxilliary stream serving grant value ServG of the equivalent subchannel of auxilliary stream that user terminal safeguards s, the scheduling grant value of using when promptly UE last time is by base station scheduling.
Likewise, the base station also can adopt the dual mode of mentioning in the step 301 to obtain auxilliary stream serving grant value ServG s, repeat no more here.
Step 402 is calculated SchG sWith ServG sBetween difference.
Step 403 is judged SchG sWith ServG sBetween difference whether exceed second preset range, whether the difference of promptly judging the two greater than second preset value, then according to judged result execution in step 404 or execution in step 405.
If step 404 is SchG sWith ServG sBetween difference be not more than second preset value, then the base station through the E-RGCH channel to the UE RG that sends control signaling s, so that UE is according to RG sAdjustment ServG s, and as far as possible near SchG s, and then according to adjusted ServG sCarry out E-TFCI and select, confirm the data rate of the equivalent subchannel of auxilliary stream.
If step 405 is SchG sWith ServG sBetween difference greater than second preset value, the judged result of obtaining step 303 then, judge the mode of base stations control user terminal selecting main flow equivalence sub-channel data rates, then execution in step 406 or execution in step 407:
If the data rate that UE selects main flow equivalence subchannel is controlled with the mode that sends control signaling in the base station, then execution in step 406, and the E-AGCH channel is passed through with SchG with the mode of absolute indices in the base station sBe sent to UE, so that UE is directly according to SchG sCarry out E-TFCI and select, confirm the data rate of the equivalent subchannel of auxilliary stream.
If the data rate that UE selects main flow equivalence subchannel is controlled with the mode of absolute indices in the base station; Then execution in step 407; The base station is carried out E-TFCI through following dual mode control UE and selected: a kind of mode is, the base station through the E-RGCH channel to the UE RG that sends control signaling s, so that UE is according to RG sAdjustment ServG s, and make ServG sAs far as possible near SchG s, UE just can be according to adjusted ServG like this sCarrying out E-TFCI selects.Another kind of mode is that the E-AGCH channel is passed through with SchG with the mode of absolute indices in the base station sBe handed down to UE; Need to prove here because E-AGCH be through UE_ID (being E-RNTI) add the mode of covering carry out multiplexing, therefore; An E-AGCH channel only can carry an AG schedule information in a TTI, issues the scheduling grant value promptly can only for a UE_ID (being E-RNTI).Therefore, need transmit SchG in main flow p, auxilliary stream also need transmit SchG sThe time, needs are sent to UE with the index of two absolute License Values respectively in two TTI.At first pass through E-AGCH with SchG pBe issued to UE, preferentially guarantee the ServG of main flow pBe adjusted to SchG p, pass through E-AGCH again with SchG at next TTI then sBe issued to UE and adjust ServG s
Likewise, when the base station adopted the AG mode to control the data rate of the equivalent subchannel of the auxilliary stream of UE selection, its specific operation process also can be described below:
At first, distribute auxilliary stream E-RNTI for UE;
Secondly, auxilliary stream E-RNTI is encoded according to the coded format of E-AGCH channel with the absolute indices of auxilliary stream scheduling grant value, and be sent to UE, so that UE selects the data rate of the equivalent subchannel of auxilliary stream.
When the base station adopted the RG mode to control the data rate of the equivalent subchannel of the auxilliary stream of UE selection, its specific operation process can be described below:
At first, distribute auxilliary stream signature for UE;
Secondly, auxilliary stream signature is encoded according to the coded format of E-RGCH channel with the control signaling, and be sent to UE, so that UE selects the data rate of the equivalent subchannel of auxilliary stream.
Further, in order to guarantee the consistency of main flow and auxilliary stream criterion, can make first preset value equal second preset value; Certainly; Also can the two be set respectively, first preset value and second preset value are not waited, this embodiment of the invention is not done qualification according to the practical application of communication system.
Down in the face of confirming main flow scheduling grant value SchG in the step 102 pWith auxilliary stream scheduling grant value SchG sMethod be elaborated.
For main flow scheduling grant value SchG p, mainly be to realize that through the mode that inner-loop power control and external circule power control combine step is following:
(1) confirms the transmitting power of DPCCH.
The base station receives the signal of UE emission, and measures up DPCCH sir value at each time slot, and SIRtar compares with goal-selling, sends out the TPC order according to comparative result to UE.UE then according to the TPC order that receives, calculates the power control step-length adjustment amount Δ dpcch on TPC_cmd and the DPCCH, adjusts the transmitting power of DPCCH then according to Δ dpcch, so that SIR=SIRtar.Just can guarantee the receptivity that DPCCH surveys at NodeB through above-mentioned up inner-loop power control.But; Because there is unsteadiness in real system; The suffered interference of each user is also in real-time variation; And the type of service that the user uses is the possibility real-time change also, and this just causes the required target signal interference ratio SIRtar real-time change of each user, and this just need adjust target signal interference ratio SIRtar through external circule power control in real time.Therefore, the base station need cooperate the transmitting power of up inner-loop power control adjustment DPCCH through uplink external ring power control.
Certainly, above-mentioned should be prerequisite with the Initial Trans of knowing DPCCH through inner-loop power control adjustment DPCCH transmitting power, can be set by RRC according to 3GPP TS25214 agreement about the DPCCH Initial Trans, is not described in detail here.
(2) the power bias upper limit-main flow scheduling grant value SchG of the relative DPCCH of configuration E-DPDCH p
Because confirmed to guarantee the transmission power level of DPCCH receptivity in the step (1), the transmitting power of E-DPCCH and the relative DPCCH of HS-DPCCH all is a substantially constant, and is configured by RRC, simultaneously, and again can be according to SchG pConfirm the transmission power level of E-DPDCH, therefore, this is with regard to the power division value on the clear and definite main flow equivalence subchannel.
For auxilliary stream scheduling grant value SchG s, mainly realize, promptly with main flow scheduling grant value SchG through adaptive mode pBe foundation, calculate auxilliary stream scheduling grant value SchG according to the mass discrepancy (being the ratio of signal to noise ratio) between main flow equivalence subchannel and the equivalent subchannel of auxilliary stream s, step is following:
Step 501 is calculated main flow equivalence subchannel and the auxilliary ratio that flows the signal to noise ratio of equivalent subchannel.
The dominant pilot that go up to carry according to DPCCH the base station and S-DPCCH go up the guidance of carrying frequently, the signal to noise ratio (SNR of the DPCCH channel that respectively main flow is belonged to DPCCH) and the auxilliary signal to noise ratio (SNR that flows the S-DPCCH channel at place S-DPCCH) estimate.Can adopt following prior art to carry out SNR estimation: because the pilot frequency information among DPCCH and the S-DPCCH is a known array; The base station promptly can obtain actual channel based on receiving symbol like this, and then the channel of reality is carried out equilibrium treatment just can obtain equivalent subchannel.Further, because S-DPCCH possibly have a certain bias or ratio value (being assumed to be K) with respect to the transmitting power of DPCCH, and suppose that total E-DPDCH is identical with total S-E-DPDCH transmitting power.At this moment, can obtain mainstream data channel E-DPDCH signal to noise ratio snr pSignal to noise ratio snr with auxilliary stream data channel S-E-DPDCH sBetween ratio:
SNR s/SNR p＝(1/K)*(SNR S-DPCCH/SNR DPCCH)。
Step 502, S-E-DPDCH on the equivalent subchannel of the auxilliary stream of calculating and the power ratio A of the DPCCH on the main flow equivalence subchannel Sed 2:
A Sed 2=A Ped 2* SNR s/ SNR pWherein, A Ped 2Be SchG pCorresponding E-DPDCH and the power ratio of DPCCH.
Step 503, the power ratio A of selection and S-E-DPDCH and DPCCH Sed 2Corresponding scheduling grant value is as auxilliary stream scheduling grant value SchG s
So far, just accomplished main flow scheduling grant value SchG pWith auxilliary stream scheduling grant value SchG sSetting up procedure.
In order to improve the antijamming capability of system, guarantee the reliability of UE and inter base station communication, the embodiment of the invention need rationally be set the main flow equivalence subchannel and the transmission block size of the equivalent subchannel of auxilliary stream, has acceptable error performance to guarantee receiving terminal:
For main flow equivalence subchannel, can adjust the power of DPCCH through up inner-loop power control and uplink external ring power control, and according to SchG pDistribute the transmitting power of E-DPDCH, can also make UE according to SchG pConfirm the TB block size that E-DPDCH carries, also just confirmed the upstream data rate of UE at E-DPDCH.
For the equivalent subchannel of auxilliary stream, if adopt and the identical method of main flow equivalence subchannel, the purpose through power control realization data dispatching speed can cause the waste of UE transmitting power first, moreover needs to introduce extra power control signaling.Therefore, the embodiment of the invention adopts the rate adaptation mode through calculating auxilliary stream scheduling grant value SchG sMode, confirm the TB block size that S-E-DPDCH carries, also just confirmed the upstream data rate of UE at S-E-DPDCH.Guarantee the antijamming capability of the equivalent subchannel of auxilliary stream with this, in the hope of realizing main flow, two close even identical purposes of equivalent subchannel error performance of auxilliary stream.
Need to prove that here UE adopts the UL-MIMO emission mode of pilot tone precoding when base station transmit signals, to adopt the mode (E-DPDCH equates with the S-E-DPDCH transmitting power) of data channel constant power.
Correspondingly, the embodiment of the invention also provides the device of a kind of dispatched users terminal upstream data rate, and is as shown in Figure 6, and the structural representation for device specifically comprises:
Receiving element 601 is used to receive the double-current signal that user terminal adopts UL MIMO emission mode to send, and the main flow signal in the double-current signal is in main flow equivalence subchannel transmission, and the auxilliary stream signal in the double-current signal is in the equivalent subchannel transmission of auxilliary stream;
Main flow scheduling grant value dispensing unit 602 is used to dispose the corresponding main flow scheduling grant value of main flow equivalence subchannel;
Auxilliary stream scheduling grant value computing unit 603 is used for according to the ratio calculation auxilliary stream equivalent subchannel corresponding auxilliary stream scheduling grant value of main flow equivalence subchannel with the signal to noise ratio of the equivalent subchannel of auxilliary stream;
Mainstream data rate controlled unit 604 is used for through the data rate of main flow scheduling grant value control user terminal at main flow equivalence subchannel;
Auxilliary stream data rate control unit 605 is used for through the data rate of auxilliary stream scheduling grant value control user terminal at the equivalent subchannel of auxilliary stream.
The embodiment of the invention reaches close even identical level in order to make main flow equivalence subchannel with the error performance of the equivalent subchannel of auxilliary stream, respectively the upstream data rate of main flow equivalence subchannel and the upstream rate of the equivalent subchannel of auxilliary stream is carried out differentiated treatment.For main flow equivalence subchannel, the base station is through the transmitting power of power control adjustment DPCCH, and according to the power bias upper limit SchG of the relative DPCCH of E-DPDCH pValue is confirmed transmitting power for E-DPDCH, and control UE is according to SchG pConfirm the data rate of main flow equivalence subchannel uplink.For the equivalent subchannel of auxilliary stream, the base station then adopts the rate adaptation mode to guarantee the antijamming capability of the equivalent subchannel of auxilliary stream, is according to SchG with main flow scheduling grant value p, confirm auxilliary stream scheduling grant value SchG according to the mass discrepancy between main flow equivalence subchannel and the equivalent subchannel of auxilliary stream s, and then control UE is according to SchG sConfirm the data rate of main flow equivalence subchannel uplink.
As shown in Figure 7, the structural representation for the auxilliary stream scheduling grant value computing unit in the embodiment of the invention specifically comprises:
Signal to noise ratio ratio calculation unit 701 is used to calculate the signal to noise ratio snr of main flow equivalence subchannel pSignal to noise ratio snr with the equivalent subchannel of auxilliary stream s
Particularly, signal to noise ratio ratio calculation unit is according to following process work: estimate that respectively the signal to noise ratio of DPCCH and S-DPCCH (is designated as SNR earlier DPCCHAnd SNR S-DPCCH), again according to power ratio (again the be called power bias) K of S-DPCCH, calculate the signal to noise ratio snr of the data channel E-DPDCH on the main flow equivalence subchannel with respect to DPCCH pWith the data channel S-E-DPDCH signal to noise ratio snr on the equivalent subchannel of auxilliary stream sBetween ratio: SNR s/ SNR p=(1/K) * (SNR S-DPCCH/ SNR DPCCH).
Power ratio computing unit 702, S-E-DPDCH on the equivalent subchannel of the auxilliary stream of calculating and the power ratio A of the DPCCH on the main flow equivalence subchannel Sed 2: A Sed 2=A Ped 2* SNR s/ SNR pWherein, A Ped 2Be SchG pCorresponding E-DPDCH and the power ratio of DPCCH;
Auxilliary stream scheduling grant value is chosen unit 703, is used to select the power ratio A with S-E-DPDCH and DPCCH Sed 2Corresponding scheduling grant value is as auxilliary stream scheduling grant value.
As shown in Figure 8, the structural representation for the mainstream data rate controlled unit in the embodiment of the invention specifically comprises:
Main flow serving grant value acquiring unit 801 is used to obtain the main flow serving grant value of the main flow equivalence subchannel that user terminal safeguards;
First computing unit 802 is used to calculate the difference between main flow scheduling grant value and main flow serving grant value;
First control unit 803; The difference that is used for calculating at first computing unit is during greater than first preset value; Mode with absolute indices is sent to user terminal with main flow scheduling grant value, so that user terminal is selected the data rate of main flow equivalence subchannel according to main flow scheduling grant value;
Second control unit 804; Be used for when the difference that first computing unit calculates is not more than first preset value; Send control signaling to user terminal; So that user terminal is adjusted main flow serving grant value according to the control signaling, and select the data rate of main flow equivalence subchannel according to adjusted main flow serving grant value.
The UE side is respectively E-DPDCH and S-E-DPDCH maintenance service License Value ServG PAnd ServG SThe base station is before the data rate on the E-DPDCH of control UE selection main flow; Obtain the serving grant value that UE safeguards earlier; According to the relation between the scheduling grant value of current serving grant value and configuration, select to adopt the mode based on absolute License Value AG then, the mode that also is based on relative grant value RG is controlled UE.
The difference of calculating at first computing unit is during greater than first preset value, then adopts the AG mode to control UE and carries out E-TFCI and select, and first control unit specifically comprises:
Main flow E-RNTI allocation units are used to user terminal and distribute main flow E-RNTI;
First coding unit is used for the absolute indices of main flow E-RNTI and main flow scheduling grant value is encoded according to the coded format of E-AGCH channel, and is sent to user terminal, so that the data rate of user terminal selecting main flow equivalence subchannel.
When the difference of first computing unit calculating is not more than first preset value, then adopt the RG mode to control UE and carry out the E-TFCI selection, second control unit comprises:
Main flow signature allocation units are used to user terminal and distribute main flow signature;
Second coding unit is used for main flow signature is encoded according to the coded format of E-RGCH channel with the control signaling, and is sent to user terminal, so that the data rate of user terminal selecting main flow equivalence subchannel.
As shown in Figure 9, the structural representation for the auxilliary stream data rate control unit in the embodiment of the invention specifically comprises:
Auxilliary stream serving grant value acquiring unit 901 is used to obtain the auxilliary stream serving grant value of the equivalent subchannel of auxilliary stream that user terminal safeguards;
Second computing unit 902 is used to calculate the difference between auxilliary stream scheduling grant value and auxilliary stream serving grant value;
The 3rd control unit 903; Be used for when the difference that second computing unit calculates is not more than second preset value; Send control signaling to user terminal; So that user terminal is adjusted auxilliary stream serving grant value according to the control signaling, and select the auxilliary data rate that flows equivalent subchannel according to adjusted auxilliary stream serving grant value;
The 4th control unit 904, the difference that is used for calculating at second computing unit are judged the mode of mainstream data rate controlled unit controls user terminal selecting main flow equivalence sub-channel data rates during greater than second preset value:
If the data rate of user terminal selecting main flow equivalence subchannel is controlled in mainstream data rate controlled unit with the mode that sends control signaling; Then the 4th control module will be assisted stream scheduling grant value with the mode of absolute indices and will be sent to user terminal, so that user terminal is selected the data rate of the equivalent subchannel of auxilliary stream based on auxilliary stream scheduling grant value;
If the data rate of user terminal selecting main flow equivalence subchannel is controlled in mainstream data rate controlled unit with the mode of absolute indices; Then the 4th control module sends control signaling to user terminal; So that user terminal is adjusted auxilliary stream serving grant value based on the control signaling, and select the auxilliary data rate that flows equivalent subchannel based on adjusted auxilliary stream serving grant value; Perhaps, the 4th control module will be assisted stream scheduling grant value with the mode of absolute indices and will be sent to user terminal in next Transmission Time Interval, so that user terminal is selected the data rate of the equivalent subchannel of auxilliary stream based on auxilliary stream scheduling grant value.
Likewise, the base station also need obtain the serving grant value ServG of the current maintenance of UE before control UE selects the data rate of the auxilliary S-E-DPDCH that flows S, and then select to control the selection that UE carries out data rate with AG mode or RG mode.Need to prove in addition, if SchG pWith ServG pDiffer greatly, and SchG sWith ServG SWhen differing also very big situation, need the preferential data rate that guarantees main flow E-DPDCH, can realize through following dual mode: a kind of mode is that E-AGCH is passed through with SchG in the base station pBe issued to and specify UE, through E-RGCH with RG sBe issued to this appointment UE; Another kind of mode is, through E-AGCH with SchG pBe issued to and specify UE, in next TTI, pass through E-AGCH then again SchG sBe issued to this appointment UE.
Further, the difference of calculating at second computing unit is during greater than second preset value, and adopts the AG mode to control UE and carry out E-TFCI when selecting, and the 3rd control unit specifically comprises:
Auxilliary stream E-RNTI allocation units are used to user terminal and distribute auxilliary stream E-RNTI;
The 3rd coding unit is used for auxilliary stream E-RNTI is encoded according to the coded format of E-AGCH channel with the absolute indices of auxilliary stream scheduling grant value, and is sent to user terminal, so that the data rate of the equivalent subchannel of the auxilliary stream of user terminal selecting.
The difference of calculating at second computing unit is during greater than second preset value, and adopts the RG mode to control UE and carry out E-TFCI when selecting, and the 4th control unit specifically comprises:
Auxilliary stream signature allocation units are used to user terminal and distribute auxilliary stream signature;
The 4th coding unit is used for auxilliary stream signature is encoded according to the coded format of E-RGCH channel with the control signaling, and is sent to user terminal, so that the data rate of the equivalent subchannel of the auxilliary stream of user terminal selecting.
Correspondingly, the embodiment of the invention also provides the system of a kind of dispatched users terminal upstream data rate, specifically comprises:
User terminal is used to adopt UL MIMO emission mode to send double-current signal to the base station, and the main flow signal in the double-current signal is in main flow equivalence subchannel transmission, and the auxilliary stream signal in the double-current signal is in the equivalent subchannel transmission of auxilliary stream;
The base station; Be used for behind the double-current signal that receives the user terminal transmission; The corresponding main flow scheduling grant value of configuration main flow equivalence subchannel, and according to the ratio calculation auxilliary stream equivalent subchannel corresponding auxilliary stream scheduling grant value of main flow equivalence subchannel with the signal to noise ratio of the equivalent subchannel of auxilliary stream; And then through the data rate of main flow scheduling grant value control user terminal, through the data rate of auxilliary stream scheduling grant value control user terminal at the equivalent subchannel of auxilliary stream at main flow equivalence subchannel;
Said user terminal also is used for the data rate based on main flow scheduling grant value selection main flow equivalence subchannel, selects to assist the data rate of the equivalent subchannel of stream based on auxilliary stream scheduling grant value.
Base station and user terminal cooperatively interact, and the technical scheme that adopts the embodiment of the invention to provide just can effectively guarantee the error performance of system under the UL MIMO emission mode.
The present invention program can describe in the general context of the computer executable instructions of being carried out by computer, for example program unit.Usually, program unit comprises the routine carrying out particular task or realize particular abstract, program, object, assembly, data structure or the like.Also can in DCE, put into practice the present invention program, in these DCEs, by through communication network connected teleprocessing equipment execute the task.In DCE, program unit can be arranged in this locality and the remote computer storage medium that comprises memory device.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and identical similar part is mutually referring to getting final product between each embodiment, and each embodiment stresses all is the difference with other embodiment.Especially, for device and system embodiment, because it is basically similar in appearance to method embodiment, so describe fairly simplely, relevant part gets final product referring to the part explanation of method embodiment.Device described above and system embodiment only are schematic; Wherein said unit as the separating component explanation can or can not be physically to separate also; The parts that show as the unit can be or can not be physical locations also; Promptly can be positioned at a place, perhaps also can be distributed on a plurality of NEs.Can select wherein some or all of module to realize the purpose of present embodiment scheme according to the actual needs.Those of ordinary skills promptly can understand and implement under the situation of not paying creative work.
More than the embodiment of the invention has been carried out detailed introduction, used embodiment among this paper the present invention set forth, the explanation of above embodiment just is used for help understanding method and apparatus of the present invention; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.

Claims (12)

1. the method for a dispatched users terminal upstream data rate is characterized in that, said method comprises:
The base station receives the double-current signal that user terminal adopts up multiple-input and multiple-output UL MIMO emission mode to send, and the main flow signal in the said double-current signal is in main flow equivalence subchannel transmission, and the auxilliary stream signal in the said double-current signal is in the equivalent subchannel transmission of auxilliary stream;
The main flow scheduling grant value that base station configuration main flow equivalence subchannel is corresponding, and based on the signal to noise ratio auxilliary stream scheduling grant value corresponding with the equivalent subchannel of the said auxilliary stream of ratio calculation of the signal to noise ratio of the equivalent subchannel of said auxilliary stream of said main flow equivalence subchannel;
The base station is through the data rate of said main flow scheduling grant value control user terminal at main flow equivalence subchannel, through the data rate of said auxilliary stream scheduling grant value control user terminal at the equivalent subchannel of auxilliary stream.
2. method according to claim 1 is characterized in that,
The said signal to noise ratio auxilliary stream scheduling grant value corresponding with the equivalent subchannel of the said auxilliary stream of ratio calculation of the signal to noise ratio of the equivalent subchannel of said auxilliary stream according to said main flow equivalence subchannel comprises:
Calculate the ratio SNR of signal to noise ratio with the signal to noise ratio of the equivalent subchannel of auxilliary stream of main flow equivalence subchannel p/ SNR s
Calculate the power ratio A that the auxilliary auxilliary stream that flows on the equivalent subchannel strengthens the special used for physical control channel DPCCH on Dedicated Physical Data Channel S-E-DPDCH and the main flow equivalence subchannel Sed 2:
A Sed 2=A Ped 2* SNR s/ SNR pWherein, A Ped 2Power ratio for the DPCCH on enhancing Dedicated Physical Data Channel E-DPDCH on the main flow equivalence subchannel and the main flow equivalence subchannel;
Select and said A Sed 2Corresponding scheduling grant value is as auxilliary stream scheduling grant value.
3. method according to claim 1 and 2 is characterized in that,
Said base station comprises through the data rate of main flow scheduling grant value control user terminal at main flow equivalence subchannel:
Obtain the main flow serving grant value of the main flow equivalence subchannel of user terminal maintenance;
Calculate the difference between said main flow scheduling grant value and said main flow serving grant value; If the difference between said main flow scheduling grant value and main flow serving grant value is greater than first preset value; Then the mode with absolute indices is sent to user terminal with said main flow scheduling grant value, so that said user terminal is selected the data rate of main flow equivalence subchannel based on said main flow scheduling grant value; Otherwise, send control signaling to user terminal, so that said user terminal is adjusted said main flow serving grant value based on said control signaling, and select the data rate of main flow equivalence subchannel based on adjusted main flow serving grant value.
4. method according to claim 3 is characterized in that, said base station comprises at the data rate of the equivalent subchannel of auxilliary stream through said auxilliary stream scheduling grant value control user terminal:
Obtain the auxilliary stream serving grant value of the equivalent subchannel of auxilliary stream of user terminal maintenance;
Calculate the difference between said auxilliary stream scheduling grant value and said auxilliary stream serving grant value; If the difference between said auxilliary stream scheduling grant value and auxilliary stream serving grant value is not more than second preset value; Then send control signaling to user terminal; So that said user terminal is adjusted said auxilliary stream serving grant value according to said control signaling, and according to the auxilliary data rate that flows equivalent subchannel of adjusted auxilliary stream serving grant value selection; Otherwise, the mode of judgement base stations control user terminal selecting main flow equivalence sub-channel data rates;
If the data rate of user terminal selecting main flow equivalence subchannel is controlled in the base station with the mode that sends control signaling; Then the base station will be assisted stream scheduling grant value with the mode of absolute indices and will be sent to user terminal, so that user terminal is selected the data rate of the equivalent subchannel of auxilliary stream based on said auxilliary stream scheduling grant value;
If the data rate of user terminal selecting main flow equivalence subchannel is controlled in the base station with the mode of absolute indices; Then the base station sends control signaling to user terminal; So that said user terminal is adjusted said auxilliary stream serving grant value according to said control signaling, and according to the auxilliary data rate that flows equivalent subchannel of adjusted auxilliary stream serving grant value selection; Perhaps, base station mode with absolute indices in next Transmission Time Interval is sent to user terminal with said auxilliary stream scheduling grant value, so that user terminal is selected the data rate of the equivalent subchannel of auxilliary stream according to said auxilliary stream scheduling grant value.
5. method according to claim 4 is characterized in that,
The data rate that user terminal selecting main flow equivalence subchannel is controlled with the mode of absolute indices in said base station comprises:
For said user terminal distributes main flow Radio Network Temporary Identifier E-RNTI;
The absolute indices of said main flow E-RNTI and said main flow scheduling grant value is encoded according to the coded format that strengthens dedicated channel absolute grant channel E-AGCH channel; And be sent to said user terminal, so that the data rate of said user terminal selecting main flow equivalence subchannel;
The data rate that the equivalent subchannel of the auxilliary stream of user terminal selecting is controlled with the mode of absolute indices in said base station comprises:
For said user terminal distributes auxilliary stream E-RNTI;
The absolute indices of said auxilliary stream E-RNTI and said auxilliary stream scheduling grant value is encoded according to the coded format of E-AGCH channel, and be sent to said user terminal, so that the data rate of the equivalent subchannel of the auxilliary stream of said user terminal selecting.
6. method according to claim 4 is characterized in that,
The data rate that user terminal selecting main flow equivalence subchannel is controlled with the mode that sends control signaling in said base station comprises:
For said user terminal distributes main flow signature signature;
Said main flow signature and said control signaling are encoded according to the coded format that strengthens dedicated channel relative authorization channel E-RGCH channel, and be sent to said user terminal, so that the data rate of said user terminal selecting main flow equivalence subchannel;
The data rate that the equivalent subchannel of the auxilliary stream of user terminal selecting is controlled with the mode that sends control signaling in said base station comprises:
For said user terminal distributes auxilliary stream signature;
Said auxilliary stream signature and said control signaling are encoded according to the coded format of E-RGCH channel, and be sent to said user terminal, so that the data rate of the equivalent subchannel of the auxilliary stream of said user terminal selecting.
7. the device of a dispatched users terminal upstream data rate is characterized in that, said device comprises:
Receiving element; Be used to receive the double-current signal that user terminal adopts up multiple-input and multiple-output UL MIMO emission mode to send; Main flow signal in the said double-current signal is in main flow equivalence subchannel transmission, and the auxilliary stream signal in the said double-current signal is in the equivalent subchannel transmission of auxilliary stream;
Main flow scheduling grant value dispensing unit is used to dispose the corresponding main flow scheduling grant value of main flow equivalence subchannel;
Auxilliary stream scheduling grant value computing unit is used for the signal to noise ratio auxilliary stream scheduling grant value corresponding with the equivalent subchannel of the said auxilliary stream of ratio calculation of the signal to noise ratio of the equivalent subchannel of said auxilliary stream based on said main flow equivalence subchannel;
Mainstream data rate controlled unit is used for through the data rate of said main flow scheduling grant value control user terminal at main flow equivalence subchannel;
Auxilliary stream data rate control unit is used for through the data rate of said auxilliary stream scheduling grant value control user terminal at the equivalent subchannel of auxilliary stream.
8. device according to claim 7 is characterized in that, said auxilliary stream scheduling grant value computing unit comprises:
Signal to noise ratio ratio calculation unit is used to calculate the signal to noise ratio snr of main flow equivalence subchannel pSignal to noise ratio snr with the equivalent subchannel of auxilliary stream s
The power ratio computing unit calculates the power ratio A that the auxilliary auxilliary stream that flows on the equivalent subchannel strengthens the special used for physical control channel DPCCH on Dedicated Physical Data Channel S-E-DPDCH and the main flow equivalence subchannel Sed 2: A Sed 2=A Ped 2* SNR s/ SNR pWherein, A Ped 2Power ratio for the DPCCH on E-DPDCH on the main flow equivalence subchannel and the main flow equivalence subchannel;
Auxilliary stream scheduling grant value is chosen the unit, is used for selecting and said A Sed 2Corresponding scheduling grant value is as auxilliary stream scheduling grant value.
9. according to claim 7 or 8 described devices, it is characterized in that said mainstream data rate controlled unit comprises:
Main flow serving grant value acquiring unit is used to obtain the main flow serving grant value of the main flow equivalence subchannel that user terminal safeguards;
First computing unit is used to calculate the difference between said main flow scheduling grant value and said main flow serving grant value;
First control unit; The difference that is used for calculating at said first computing unit is during greater than first preset value; Mode with absolute indices is sent to user terminal with said main flow scheduling grant value, so that said user terminal is selected the data rate of main flow equivalence subchannel according to said main flow scheduling grant value;
Second control unit; Be used for when the difference that said first computing unit calculates is not more than first preset value; Send control signaling to user terminal; So that said user terminal is adjusted said main flow serving grant value according to said control signaling, and select the data rate of main flow equivalence subchannel according to adjusted main flow serving grant value.
10. device according to claim 9 is characterized in that,
Said first control unit comprises:
Main flow Radio Network Temporary Identifier E-RNTI allocation units are used to said user terminal and distribute main flow E-RNTI;
First coding unit; Be used for the absolute indices of said main flow E-RNTI and said main flow scheduling grant value is encoded according to the coded format that strengthens dedicated channel absolute grant channel E-AGCH channel; And be sent to said user terminal, so that the data rate of said user terminal selecting main flow equivalence subchannel;
Said second control unit comprises:
Main flow signature signature allocation units are used to said user terminal and distribute main flow signature;
Second coding unit; Be used for said main flow signature and said control signaling are encoded according to the coded format that strengthens dedicated channel relative authorization channel E-RGCH channel; And be sent to said user terminal, so that the data rate of said user terminal selecting main flow equivalence subchannel.
11. device according to claim 9 is characterized in that, said auxilliary stream data rate control unit comprises:
Auxilliary stream serving grant value acquiring unit is used to obtain the auxilliary stream serving grant value of the equivalent subchannel of auxilliary stream that user terminal safeguards;
Second computing unit is used to calculate the difference between said auxilliary stream scheduling grant value and said auxilliary stream serving grant value;
The 3rd control unit; Be used for when the difference that said second computing unit calculates is not more than second preset value; Send control signaling to user terminal; So that said user terminal is adjusted said auxilliary stream serving grant value according to said control signaling, and according to the auxilliary data rate that flows equivalent subchannel of adjusted auxilliary stream serving grant value selection;
The 4th control unit, the difference that is used for calculating at said second computing unit are judged the mode of said mainstream data rate controlled unit controls user terminal selecting main flow equivalence sub-channel data rates during greater than second preset value;
If the data rate of user terminal selecting main flow equivalence subchannel is controlled in said mainstream data rate controlled unit with the mode that sends control signaling; Then said the 4th control module will be assisted stream scheduling grant value with the mode of absolute indices and will be sent to user terminal, so that user terminal is selected the data rate of the equivalent subchannel of auxilliary stream based on said auxilliary stream scheduling grant value;
If the data rate of user terminal selecting main flow equivalence subchannel is controlled in said mainstream data rate controlled unit with the mode of absolute indices; Then said the 4th control unit sends control signaling to user terminal; So that said user terminal is adjusted said auxilliary stream serving grant value according to said control signaling, and according to the auxilliary data rate that flows equivalent subchannel of adjusted auxilliary stream serving grant value selection; Perhaps, said the 4th control unit mode with absolute indices in next Transmission Time Interval is sent to user terminal with said auxilliary stream scheduling grant value, so that user terminal is selected the data rate of the equivalent subchannel of auxilliary stream according to said auxilliary stream scheduling grant value.
12. according to claim 10 or 11 described devices, it is characterized in that,
Said the 3rd control unit comprises:
Auxilliary stream E-RNTI allocation units are used to said user terminal and distribute auxilliary stream E-RNTI;
The 3rd coding unit; Be used for the absolute indices of said auxilliary stream E-RNTI and said auxilliary stream scheduling grant value is encoded according to the coded format of E-AGCH channel; And be sent to said user terminal, so that the data rate of the equivalent subchannel of the auxilliary stream of said user terminal selecting;
Said the 4th control unit comprises:
Auxilliary stream signature allocation units are used to said user terminal and distribute auxilliary stream signature;
The 4th coding unit is used for said auxilliary stream signature and said control signaling are encoded according to the coded format of E-RGCH channel, and is sent to said user terminal, so that the data rate of the equivalent subchannel of the auxilliary stream of said user terminal selecting.
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