CN1661952A - Equipment and method for controlling retransmission data ROT - Google Patents

Abstract

A method for controlling retransmission data ROT in the mode of speed regulation.This method includes the following steps:Node B decodes after receiving the data from UE,if coding is wrong,Node B sends NACK to UE and asks UE to retransmit the data.when retransmitting the data,Node B determines the change of aim ROT which is needed to retransmit data.Node B indicates the largest speed lifting that UE can use when retransmit by dispatching command RG.UE reckons the virtual transmission format combination according to the dispatching command RG from Node B so as to deduces the transmission power of the E-DPDCH channel when retransmitting.UE sends retransmission data with the same virtual transmission format combination used in the first time and the transmission power.Node B determines the anticipant ROT in retransmission process according to the ROT of the current base station and the power of E-DPDCH coding correctly and indicates by dispitching command of physical layer.The dispatching command does not indicate the actual transmission speed but the virtual transmission speed which is the one that Node B expects the UE reach when retransmission.

Description

The apparatus and method for of control data retransmission ROT

Technical field

The present invention relates to 3G (Third Generation) Moblie, particularly about among the EUDCH, the apparatus and method for that Node B controls flexibly to the ROT (Noise rise over thermal noise) that needs data retransmission.

Background technology

Second generation mobile communication system comprises GSM (Global System for MobileCommunications) and IS (Interim Standard)-95, and main target provides voice service.GSM has adopted TDMA (Time Division Multiple Access) technology, in commercialization in 1992, is mainly used in Europe and China.And IS-95 adopts is CDMA (Code Division Multiple Access), is mainly used in the U.S. and Korea S.

At present, mobile communication technology has been evolved to 3-G (Generation Three mobile communication system), except voice service is provided, also provides two-forty and high-quality data service and multimedia service.3-G (Generation Three mobile communication system) comprises 3GPP (3 ^RdGeneration Project Partnership) the asynchronous CDMA system of International Standards Organization research (or claim the WCDMA system, or claim UMTS), i.e. timing between each base station is asynchronous, and 3GPP2 (3 ^RdGeneration Project Partnership 2) synchronous CDMA system of International Standards Organization's research (or claiming CDMA2000), i.e. timing between each base station is identical.

Synchronous and asynchronous 3-G (Generation Three mobile communication system) is all to providing two-forty, high-quality data packet services to carry out standardization.For example: 3GPP is carrying out standardization to HSDPA (High Speed DownlinkAccess), thereby improves descending data rate, and 3GPP2 is carrying out standardization to 1xEV-DV (Evolution-Data and Voice).3GPP proceeds the enhancing (EUDCH) of ascending packet data transmission again, thereby improves up capacity and covering.EUDCH compares with the up DCH of Re199/4/5, introduced HARQ (Hybrid Automatic Retransmission Request) mechanism, and considering to use the TTI (TransmissionTime Interval) shorter than the up DCH of Re199/4/5, for example the same with HSDPA is 2ms.TTI is defined as the time interval of transmission channel to the physical channel transfers data.Up EUDCH is more prone to use power control to carry out link circuit self-adapting (3GPP just under study for action), and the HSDPA use is that the AMC mode is carried out link circuit self-adapting.

Accordingly, be necessary the up channel of each sub-district is dispatched so that Resources allocation.EUDCH moves on to Node B to scheduling feature from RNC, to realize fast dispatch.The purpose of uplink scheduling is effectively to utilize finite wireless resources.For example, the target ROT of each sub-district (T_ROT) is dispatched by the up channel of this sub-district to decide, state according to this sub-district and adjacent cells, can find the T_ROT of an optimum, when the up channel scheduling makes the actual M_ROT that records smaller or equal to T_ROT, and when the variation of M_ROT was very little, then the up of system can obtain optimum performance.Formula (1) is seen in the definition of ROT:

$\mathrm{ROT}=\frac{I_o}{N_o}.....\left(1\right)$

Wherein, Io is all signal strength signal intensity sums that Node B receives, i.e. the overall with band received signal power spectrum density of Node B, and No is the power spectral density of the thermal noise of Node B.

Because No is time to time change hardly, so ROT is mainly determined by Io.If ROT is less, illustrate that signal strength signal intensity that Node B receives a little less than.Though the interference that terminal is received is less, the load of Node B is also less.Yet, if ROT is bigger, illustrate that Node B has higher load, but mean that also the interference that the up link of terminal is subjected to is bigger, just cause the reduction of uplink performance, thereby reduced the up performance of whole system.The performance of balance ROT and whole system makes whole system obtain load that the ROT of the optimum of optimum performance can be by taking all factors into consideration Node B and the noise intensity of terminal obtains.

At present, mainly proposed two kinds of scheduling modes among the TR25.896: one is based on the rate scheduling of Node B control, and two are based on the speed and the time scheduling of NodeB control.

In the rate scheduling mode based on Node B control, RNC sets the TFCS subclass (TFCS Subset) that Node B allows use, and tells Node B by the NBAP signaling.Node B sets the TFCS subclass (TFCS Subset) that UE allows use, and tells to UE by physical layer signaling.The TFCS subclass that Node B allows to use comprises the TFCS subclass that UE allows use.Compare with the special uplink channel control of Re199/4/5, the scheduling of controlling based on Node B can change the TFCS subclass that UE allows use each dispatching cycle, thereby can adapt to the variation of ascending load, reaches the purpose of fast dispatch.

Because the TFC among the TFCS can sort according to speed, so each TFCS subclass is represented with pointer.Node B allows the subclass of use, with a Node B pointer (Node B pointer) indication, and the some TFC of Node B pointed, all transmission rates all belong to the subclass that Node B allows use smaller or equal to the element of this TFC.Equally, a TFC of transmission rate maximum in the TFCS subclass of UE pointer (UE pointer) sensing UE permission use.Referring to Fig. 8, this is an illustration about Node B pointer and UE pointer.Among the figure, the TFCS of RNC definition has 11, is TFC10 after (with the data rate equivalence) ordering from small to large according to transmitting power, TFC9, and TFC8 ..., TFC0.The UE pointer is TFC7, so the TFCS subclass that UE allows to use is that TFC7 is to TFC10.Node B pointer is TFC3, so the TFCS subclass that Node B allows this UE is used is that TFC3 is to TFC10.

UE can be in the TFCS subclass that UE allow to use according to Re199 in existing TFC selection algorithm calculate the current TFC that will use, that is to say that the operable peak transfer rate of UE is exactly the TFC of UE pointer indication.

Fig. 1 has described the concrete operations based on the rate scheduling mode of Node B control.

In step 101, the current speed of UE equals the maximum TFC in the TFCS subclass that UE allows, if UE still wishes to improve speed, then improves request RR (Rate Request) to Node B transmission rate; Otherwise, send DTX.

In step 102, Node B is according to the situation of rate request RR and the current ROT of Node B of UE in the step 101, whether decision allows UE to improve speed when sending new data, perhaps changing down, send the dispatching command RG (Rate Grant) that new data transmits first to UE, promptly RG=UP represents to allow UE to improve speed; RG=DOWN represents to order the UE changing down; RG=DTX represents to allow UE speed remain unchanged.

In step 103, UE selects suitable TFC according to the TFC selection algorithm and sends data to Node B according to the dispatching command of the Node B in the step 102 that receives in the TFCS subclass that UE allows.

In step 104, Node B receives from after the UE data in the step 103, deciphers.

In step 105, if decoding is correct, Node B sends ACK to UE; If decipher incorrectly, Node B sends NACK to UE.

If in step 105, that Node B sends to UE is ACK, turns to step 101 after then UE receives, and is ready for sending new data; If in step 105, that Node B sends to UE is NACK, turns to step 106 after then UE receives.

In step 106, Node B not to dispatching retransmission data, but reserves ROT identical when transmitting first for the data retransmission of UE when the UE data retransmission, UE with transmit identical speed rates first.After the execution of step 106, turn to step 104.

In speed and time scheduling based on NodeB control, UE is before carrying out transfer of data, the information (as buffer status and power headroom) that the dispatching algorithm of Node B is used need be issued Node B to carry out the request of transfer of data, Node B is according to the information of receiving, calculate the quality of the wireless channel of UE, and unify scheduling according to current ROT situation.Node B tell UE by physical layer signaling, with great speed, when carries out transfer of data.

Fig. 2 has described based on the speed of Node B control and the concrete operations of time scheduling mode.

In step 201, as the buffer of new data from high level arrival UE, UE just sends the information SI (Scheduling Information) that is used to dispatch to Node B, comprises the size of data and the transmitting power surplus of buffer.

In step 202, Node B is according to the schedule information (SI) of UE in the step 201 and the situation of current ROT, send the dispatching command SA (Scheduling Assignment) that new data transmits first to UE, the maximum TFC (pressing the ascending ordering of the pairing transmitting power of TFC) of the TFCS subclass that transmission UE allows and UE send the time of data.

In step 203, UE selects suitable TFC according to the TFC selection algorithm and send data to Node B in Node B official hour according to the dispatching command that receives Node B in the step 202 in the TFCS subclass that UE allows.

In step 204, Node B deciphers after receiving the data of transmitting first from UE in the step 203.

In step 205, if decoding is correct, Node B sends ACK to UE; If decipher incorrectly, Node B sends NACK to UE.

If in step 205, that Node B sends to UE is ACK, turns to step 201 after then UE receives, and is ready for sending new data.If in step 205, that Node B sends to UE is NACK, turns to step 206.

In step 206, Node B is to dispatching retransmission data, but reserves ROT identical when transmitting first for the data retransmission of UE, UE with transmit identical speed rates first.After the execution of step 206, turn to step 204.

Existing two kinds of dispatching methods all are that transmission is first dispatched among the TR25.896, speed when promptly retransmitting with transmit first identical, and from Node B side, the re-transmission of UE is identical with the contribution of transmitting first ROT, and it is identical promptly retransmitting with the received power that is transmitted in Node B side first.Node B side will be reserved for the UE that needs data retransmission and transmit identical ROT first like this, and more remaining ROT being distributed to other needs the UE of transmission first, thereby make the priority of data retransmission be higher than the priority of transmission first.In addition, Node B does not dispatch re-transmission, has reduced scheduling accuracy.In addition, if the energy that retransmits several times and transmit stack first that Node B receives will bring more unnecessary uplink to disturb to system, thereby reduce systematic function greater than the correct decoding energy needed.

Summary of the invention

The apparatus and method for that the purpose of this invention is to provide a kind of flexible control data retransmission ROT makes Node B control data retransmission and the ROT that transmits data first flexibly, make data retransmission with the data of transmission first different ROT can be arranged, but data rate is identical.So just make the priority that retransmits with transmission first identical, and increased the precision of ROT control, the while can make the energy that Node B control retransmits several times and transmission first superposes equal the correct decoding energy needed, thereby reduces uplink interference.

For achieving the above object, a kind of method of controlling data retransmission ROT in the rate scheduling mode, comprises step:

After Node B receives data from UE, decipher, if decipher incorrectly, NodeB sends NACK to UE, requires the UE data retransmission;

During data retransmission,

The variation of the target ROT of Node B decision data retransmission;

Node B indicates UE in retransmission to allow the lifting of the maximum rate of use with dispatching command RG;

UE extrapolates the virtual transmission format combination according to the dispatching command RG of the corresponding re-transmission that Node B sends, thereby derives the transmitted power of E-DPDCH channel when retransmitting;

UE uses transformat combination identical when transmitting first, sends data retransmission with the E-DPDCH channel the derived transmitted power when the re-transmission.

According to another aspect of the present invention, a kind of Node B transmitter of controlling data retransmission ROT, in the rate scheduling mode, it is characterized in that comprising scheduler module, described scheduler module comprises initial transmission scheduler module and retransfer scheduling module, wherein, the dispatching command of control transmission first is by transmitting and scheduling module output first, and the dispatching command that control retransmits is exported by the retransfer scheduling module.

The present invention compares with the control method of ROT among the EUDCH described in the existing TR25.896 v 1.1.2 version, and the present invention can make Node B control the ROT of data retransmission flexibly.The ROT of expectation when Node B retransmits according to the ROT of current base station and the required power decision of E-DPDCH correct decoding, and indicate by the physical layer dispatching command.Dispatch is no longer indicated actual transmission rate when retransmitting, the promptly actual TFC that uses, but indication Node B wishes the virtual transmission rate that UE reaches, promptly virtual TFC.The dispatching command of UE when retransmitting extrapolated the power of E-DPDCH when retransmitting.

Description of drawings

Fig. 1 is the method flow diagram of the up hot noise increase of control data retransmission in the rate scheduling mode of prior art;

Fig. 2 is the method flow diagram of the up hot noise increase of control data retransmission in the speed of prior art and the time scheduling mode;

Fig. 3 is in the rate scheduling mode, has the hardware chart based on the terminal equipment transmitter of the recruitment function of the up thermal noise of base stations control data retransmission;

Fig. 4 is the enhancing special uplink channel gain factor generation module frame chart when being used to control transmission first with re-transmission in the rate scheduling scheme;

Fig. 5 is in the rate scheduling mode, has based on the base station action flow chart under first kind of possibility of the up hot noise increase function of base stations control data retransmission;

Fig. 6 is in the rate scheduling mode, has based on the terminal action flow chart under first kind of possibility of the up hot noise increase function of base stations control data retransmission;

Fig. 7 is under first kind of possibility in the rate scheduling, strengthens the hardware device of the enhancing special uplink channel gain factor generator in the special uplink channel power calculation method one during re-transmission;

Fig. 8 is the schematic diagram of base station pointer and terminal pointer in the rate scheduling.

Fig. 9 is under first kind of possibility in the rate scheduling, strengthens the hardware device figure of the enhancing special uplink channel gain factor generator in the special uplink channel power calculation method two during re-transmission;

Figure 10 is in the rate scheduling, has the base station equipment figure based on the up hot noise increase function of base stations control data retransmission;

Figure 11 is in the rate scheduling mode, has based on the terminal action flow chart under second kind of possibility of the up hot noise increase function of base stations control data retransmission;

Figure 12 is under second kind of possibility in the rate scheduling, strengthens the hardware device figure of the special uplink channel gain factor generator in the special uplink channel power calculation method during re-transmission;

Figure 13 is in the rate scheduling, has base station and terminal interaction process flow diagram based on the up hot noise increase function of base stations control data retransmission;

Figure 14 is in speed and the time scheduling, has base station and terminal interaction process flow diagram based on the up hot noise increase function of base stations control data retransmission;

Figure 15 is in speed and the time scheduling mode, has the hardware chart based on the terminal equipment transmitter of the up hot noise increase function of base stations control data retransmission;

Figure 16 is the enhancing special uplink channel gain factor generation module frame chart when being used to control transmission first with re-transmission in speed and the time scheduling scheme;

Figure 17 is in speed and the time scheduling mode, has the base station action flow chart based on the up hot noise increase function of base stations control data retransmission;

Figure 18 is in speed and the time scheduling mode, has the base station action flow chart based on the up hot noise increase function of base stations control data retransmission;

Figure 19 is in speed and the time scheduling, strengthens the hardware device figure of the enhancing special uplink channel gain factor generator in the special uplink channel power calculation method one during re-transmission;

Figure 20 is in speed and the time scheduling, has the base station equipment figure based on the up hot noise increase function of base stations control data retransmission;

Figure 21 is in speed and the time scheduling, strengthens the hardware device figure of the enhancing special uplink channel gain factor generator in the special uplink channel power calculation method two during re-transmission;

Figure 22 under second kind of possibility in the rate scheduling, has the base station action flow chart based on the up hot noise increase function of base stations control data retransmission;

Embodiment

The present invention proposes a kind ofly in EUDCH, Node B controls the data retransmission of UE and the apparatus and method for that transmits data ROT first flexibly.Compare with the time scheduling mode with speed with existing rate scheduling mode, increased control therein data retransmission ROT.

The invention provides a kind of apparatus and method for of in the rate scheduling mode, controlling the ROT when retransmitting flexibly.

Figure 13 has provided the flow chart of this method:

The transmitting-receiving flow chart of a HARQ process of UE as shown in figure 13.Node B according to the situation of current ROT decision transmit the variation of the target ROT of E-DCH new data first, and indicate to UE with dispatching command RateGrant (RG) 1301.UE orders according to RG and adjusts UE pointer, it is the TFCS subclass that UE allows use, and according to TFC selection algorithm actual TFC that uses of selection in the TFCS subclass that UE allows to use, use the TFC that selects to send the E-DCH new data 1302 of transmission first then, so the speed of new data is smaller or equal to the pairing speed of UE pointer to NodeB.Receive the new data 1302 of a HARQ process of UE as Node B after, decipher.If decoding is correct, then Node B sends ACK to UE, and UE continues to send new data; If decipher incorrectly, Node B sends NACK1303 to UE, requires the UE data retransmission; Simultaneously, also will be according to the variation of the required power decision data retransmission target ROT (i.e. the received power of Qi Wang data retransmission) of the situation of current ROT and E-DPDCH correct decoding, and indicate with dispatching command Rate Grant (RG) 1304.When transmitting first, all be the lifting that indication UE allows the maximum rate that uses when RG order is used to retransmit, when UE receives NACK, UE data retransmission 1305.During re-transmission, because the HARQ module will merge, so UE still uses transformat combination (TFC) identical when transmitting first to send data, promptly speed is constant, but the maximum of Node B desire control UE allows to use speed, and the maximum power that allows to use by control UE shows.The UE transmitted power is calculated out according to the corresponding dispatching command RG that Node B sends, and no longer is the pairing power of TBS of actual use.

Send the implication that RG orders from Node B, this method has two kinds of possibilities:

First kind of possibility:

The lifting of Node B ROT when required power control retransmits according to current ROT situation and E-DPDCH correct decoding, ROT when transmitting first with control is identical, transmission dispatching command RG indication UEpointer is with respect to the lifting of previous dispatching cycle, and UE pointer indicates UE to allow the maximum rate that uses.UE uses transformat combination identical when transmitting first when retransmitting, but the UE pointer of transmitted power after being upgraded control, smaller or equal to the pairing power of UE pointer.So in first kind of possibility, UE pointer transmission first when retransmitting all under the RG order with respect to upgrading previous dispatching cycle.

Second kind of possibility:

The lifting of Node B ROT when required power control retransmits according to current ROT situation and E-DPDCH correct decoding, ROT when transmitting first with control is different, send the lifting of the speed that allows the speed used when dispatching command RG indication UE retransmits when transmitting first, the value of RG order change UE pointer, the value of UE pointer is only just upgraded when transmitting first.UE uses transformat combination identical when transmitting first when retransmitting, but the UE of transmitted power after being upgraded allows to use the control of speed when retransmitting, and is not subjected to the control of UE pointer, allows the pairing power of speed of use smaller or equal to UE.For repeatedly retransmitting, the RG indication be that this time of UE allows when retransmitting the speed used with respect to the preceding lifting of speed when once transmitting.

In possibility one and two, RG is three value informations of 1bit ,+1 ,-1, and DTX.Terminal (UE) equipment that should method is compared with the UE equipment under the existing speed scheduling, improved β _{D, eu}Module takes place.Fig. 3 has provided the hardware chart that has based on terminal equipment (UE) transmitter of Node B control data retransmission ROT function in rate scheduling.β _{D, eu}Module 324 takes place in the position of UE transmitter as shown in Figure 3, the β of its output _{D, eu}Value be exactly gain factor 307 behind the E-DPDCH spread spectrum, β _{D, eu}With β _cBetween proportionate relationship reflect the ratio of E-DPDCH and the power of DPCCH.This UE equipment is applicable to the situation of E-DCH and DCH code division multiplexing.E-DCH is mapped to respectively on the different CcTrCH with DCH, and promptly an E-DCH is mapped on the CcTrCH, has only a TrCH among the TFC.At this moment TFC can replace with TBS.This UE equipment has the function of control data retransmission ROT, the maximum power that allows the power of use smaller or equal to virtual TBS correspondence of UE in retransmission.The speed that the Node B expectation UE that virtual TBS is UE order infers out according to RG reaches when retransmitting, rather than the TBS of actual use when retransmitting.

Fig. 4 has provided the β after improving _{D, eu}Module frame chart takes place.As Fig. 4, the β after the improvement _{D, eu}β when generation module 401 will be transmitted first _{D, eu}β during with re-transmission _{D, eu}Separate computations, this module comprise gain factor β when transmitting first _{D, eu}Computing module 402, module 403, gain factor β during re-transmission take place in virtual TBS during re-transmission _{D, eu}Computing module 404, number selects device MUX405.Operate as follows: select the control end of device MUX405 with the number of transmissions as number, when the number of transmissions is the 1st transmission (i equals 1), when promptly transmitting first, β when number selects the output of device to select to transmit first _{D, eu}The β that computing module 402 calculates _{D, eu}The result; When the number of transmissions is the i time transmission (i is more than or equal to 2), when promptly retransmitting, β when number selects the output of device select to retransmit _{D, eu}The β that computing module 404 calculates _{D, eu}The result.Wherein, gain factor β when transmitting first _{D, eu}In the computing module 402, the β when transmitting first _{D, eu}Be that the big or small TBS#1 of transmission block of actual use calculates when transmitting first; And when retransmitting gain factor β _{D, eu}In the computing module 404, the β during re-transmission _{D, eu}Be not only when retransmitting the big or small TBS#1 of transmission block of actual use calculate, but the big or small TBS#1 of transmission block of the TBS#i as a result (TBS that uses when representing the i time transmission, i＞1) of virtual TBS generator 403 and actual use when retransmitting (also being the TBS of use when transmitting first) derivation is come out when retransmitting.The function of virtual TBS generator 403 is to extrapolate the speed that Node B expectation UE reaches from the RG order during re-transmission, changes the speed that Node B expectation UE reaches into power in module 404.Corresponding first kind of possibility and second kind of possibility, the explanation difference of 403 couples of RG of virtual TBS generator, corresponding possibility one, RG indication UE pointer is with respect to the lifting of previous dispatching cycle, and virtual TBS is the maximum rate that the pairing UE of UE pointer after upgrading allows use; The lifting of corresponding possibility two, RG indication UE allow the speed used when transmitting first when retransmitting speed, the value of RG order change UE pointer, virtual TBS is meant that UE in retransmission allows the maximum rate that uses.

Base station (Node B) equipment that should method is compared with the Node B equipment under the existing rate scheduling, improved scheduler module based on Node B.Figure 10 has provided the hardware chart that has based on base station (Node B) the equipment transmitter of Node B control data retransmission ROT function in rate scheduling.Node B not only controls the ROT of transmission first, the ROT when also control retransmits on function.As Figure 10, not only comprise initial transmission scheduler module 1001 based on the scheduler module 1034 of Node B based on Node B, also comprise retransfer scheduling module 1002 based on Node B, retransfer scheduling module 1002 based on Node B is modules newly-increased among the present invention, these two functional modules can be separated when hardware is realized, also can synthesize one, other module is identical with the regulation of existing standard.Be subjected to ACK/NACK based on the input of the scheduler module 1034 of NodeB from Node B, if UE receives ACK, then export RG value,, then export RG value based on the retransfer scheduling module generation of Node B if UE receives NACK based on the initial transmission scheduler module generation of Node B.RG1003 is exported by the module of transmitting and scheduling first based on Node B, is to be exported by the retransfer scheduling module based on Node B when retransmitting.Corresponding first kind of possibility and second kind of possibility, RG is the lifting that is used to indicate the maximum rate that UE allows, but the reference value difference of lifting, corresponding possibility one, RG indication UE pointer is with respect to the lifting of previous dispatching cycle, and UE pointer indicates UE to allow the maximum rate that uses.The lifting of corresponding possibility two, RG indication UE allow the speed used when transmitting first when retransmitting speed, the value of RG order change UE pointer.

The invention provides a kind of apparatus and method for that retransmits ROT of in speed and time scheduling mode, controlling flexibly.

Figure 14 has provided the flow chart of this method:

The transmitting-receiving flow chart of a HARQ process of UE as shown in figure 14.Node B according to the situation of current ROT decision transmit the target ROT of E-DCH new data first, and indicate to UE with dispatching command SchedulingAssignment (SA) 1401.Order draws the TFCS subclass that UE allows use to UE according to SA, it is the maximum rate that UE allows use, and according to TFC selection algorithm actual TFC that uses of selection in the TFCS subclass that UE allows to use, use the TFC that selects to send the E-DCH new data 1402 of transmission first to Node B then, the speed of new data is smaller or equal to the maximum rate in the TFCS subclass.Receive the new data 1402 of a HARQ process of UE as Node B after, decipher.If decoding is correct, then Node B sends ACK to UE, and UE continues to send new data; If decipher incorrectly, Node B sends NACK1403 to UE, requires the UE data retransmission; Simultaneously, also will be according to situation and the required power decision data retransmission target ROT (i.e. the received power of Qi Wang data retransmission) of E-DPDCH correct decoding of current ROT, and indicate with dispatching command SchedulingAssignment (SA) or Rate Grant (RG) 1404, when SA order is used to retransmit when transmitting first, it all is the maximum rate that indication UE allows use, be absolute value, RG represents that transmission this time is with respect to the preceding lifting of speed when once transmitting.When UE receives NACK, UE data retransmission 1405.During re-transmission, because the HARQ module will merge, so UE still uses transmission block size (Transport Block Size) identical when transmitting first to send data, be that speed is constant, but the maximum of Node B desire control UE allows to use speed, and the maximum power that allows to use by control UE shows.The UE transmitted power calculates out that the pairing power of maximum TFC in the TFCS subclass that allows to use smaller or equal to UE no longer is the pairing power of TFC of actual use according to the corresponding dispatching command SA/RG that Node B sends.

Terminal (UE) equipment that should method is compared with the UE equipment under the existing speed scheduling, improved β _{D, eu}Module takes place.Figure 15 has provided in speed and the time scheduling mode, has the hardware chart based on terminal equipment (UE) transmitter of Node B control data retransmission ROT function.β _{D, eu} Module 1524 takes place in the position of UE transmitter as shown in figure 15, the ρ of its output _{D, eu}Value be exactly gain factor 1507 behind the E-DPDCH spread spectrum, β _{D, eu}With β _cBetween proportionate relationship reflect the ratio of E-DPDCH and the power of DPCCH.This UE equipment is applicable to the situation of E-DCH and DCH code division multiplexing.E-DCH is mapped to respectively on the different CcTrCH with DCH, and promptly an E-DCH is mapped on the CcTrCH, has only a TrCH among the TFC.At this moment TFC can replace with TBS.This UE equipment has the function of control data retransmission ROT, the maximum power that allows the power of use smaller or equal to virtual TBS correspondence of UE in retransmission.The speed that the Node B expectation UE that virtual TBS is UE order infers out according to SA/RG reaches when retransmitting, rather than the TBS of actual use when retransmitting.

Figure 16 has provided the β after improving _{D, eu}Module frame chart takes place.As Figure 16, the β after the improvement _{D, eu}β when generation module 1601 will be transmitted first _{D, eu}β during with re-transmission _{D, eu}Separate computations, this module comprises β when transmitting first _{D, eu}Computing module 1602, module 1603, β during re-transmission take place in virtual TBS during re-transmission _{D, eu}Computing module 1604 and number select device MUX1605.Operate as follows: select the control end of device MUX1605 with the number of transmissions as number, when the number of transmissions is the 1st transmission (i equals 1), when promptly transmitting first, β when number selects the output of device to select to transmit first _{D, eu}The β that computing module 1602 calculates _{D, eu}The result; When the number of transmissions is the i time transmission (i is more than or equal to 2), when promptly retransmitting, β when number selects the output of device select to retransmit _{D, eu}The β that computing module 1604 calculates _{D, eu}The result.Wherein, gain factor β when transmitting first _{D, eu}In the computing module 1602, the β when transmitting first _{D, eu}The transmission block size TBS#1 (TBS that represents use when transmitting for the 1st time) that is actual uses when transmitting first calculates; And when retransmitting gain factor β _{D, eu}In the computing module 1604, β during re-transmission _{D, eu}Calculating be not only when retransmitting the big or small TBS#1 of transmission block of actual use calculate, but the transmission block TBS#1 of the TBS#i as a result (TBS that uses when representing the i time transmission, i＞1) of virtual TBS generator 1603 and actual use when retransmitting (also being the TBS of use when transmitting first) derivation is come out when retransmitting.The function of virtual TBS generator 1603 is to extrapolate the speed that Node B expectation UE reaches from the SA/RG order during re-transmission, changes the speed that Node B expectation UE reaches into power in module 1604.

Base station (Node B) equipment that should method is compared with the Node B equipment under the time scheduling with existing speed, improved scheduler module based on Node B.Figure 20 has provided the hardware chart that has based on base station (Node B) the equipment transmitter of Node B control data retransmission ROT function in rate scheduling.As Figure 20, Node B not only controls the ROT of transmission first, the ROT when also control retransmits on function.Not only comprise initial transmission scheduler module 2001 based on the scheduler module 2034 of Node B based on Node B, also comprise retransfer scheduling module 2002 based on Node B, retransfer scheduling module 2002 based on Node B is modules newly-increased among the present invention, these two functional modules can be separated when hardware is realized, also can synthesize one, other module is identical with the regulation of existing standard.Be subjected to ACK/NACK based on the input of the scheduler module 2034 of Node B from Node B, if UE receives ACK, then export SA value based on the initial transmission scheduler module generation of Node B, if UE receives NACK, then export SA/RG value based on the retransfer scheduling module generation of Node B.SA2003 by transmitting and scheduling module output first, is to be exported by the scheduler module that retransmits when retransmitting when transmitting first.

Introduce the definition of using among the present invention below:

TFC#1: transmit first and the transformat combination of the actual use of CcTrCH at E-DCH place when retransmitting, corresponding with transmission rate.

TFC#i (i＞=2): the virtual transmission format combination (TFC) that the CcTrCH at E-DCH place is derived out by RG order or SA order during re-transmission, the UE of Node B expectation allowed the maximum rate of use when its expression retransmitted, and did not represent the transformat combination of the actual use of UE.UE in retransmission is used the transmitted power that virtual TFC calculates E-DPDCH.

TBS#1: transmit first and the transmission block size of the actual use of E-DCH when retransmitting, corresponding with transmission rate.

TBS#i (i＞=2): the E-DCH virtual transmission piece (TBS) of deriving out by RG order or SA order during re-transmission, the up E-DPDCH channel of Node B expectation UE allowed the maximum rate of use when its expression retransmitted, and did not represent the transmission block size of the E-DCH channel of the actual use of UE.UE in retransmission is used the transmitted power that virtual TBS calculates E-DPDCH.

The action specification of the apparatus and method for of ROT when control retransmits flexibly in the rate scheduling mode.

How to control the ROT of data retransmission, promptly how to indicate Node B desired destination ROT with dispatching command RG, and UE how to adjust transmitted power according to dispatching command RG be core of the present invention, following two kinds of concrete possibilities are arranged:

Node B and UE action specification under first kind of possibility:

For a HARQ process, the action of the method for ROT was as follows when Node B controlled re-transmission flexibly under first kind of possibility:

Fig. 5 has provided in the rate scheduling mode flow chart of Node B action under first kind of possibility.

The lifting of ROT when 501Node B transmits first according to current ROT situation control sends the lifting of dispatching command Rate Grant (RG) order indication UE pointer with respect to previous dispatching cycle.Adjust a step-length to positive direction previous dispatching cycle when the Node B expectation speed ratio of UE when transmitting first, the value of RG is changed to UP; Adjust a step-length to negative direction previous dispatching cycle when the Node B expectation speed ratio of UE when transmitting first, the value of RG is changed to DOWN (DN); UE remains unchanged speed and the previous dispatching cycle when transmitting first when Node B expectation, and the value of RG is changed to DTX.TFC is according to the ascending ordering of pairing power, and ascending is positive direction.

502Node B receives from the E-DCH data of UE and decoding.If 503 decode results are correct, Node B sends ACK to UE, turns to 501 then, and transmission is first next time dispatched; If 504 decode results are mistake, Node B sends NACK to UE.

The lifting of ROT when 505Node B will retransmit according to the situation of current ROT and the required power control of E-DPDCH correct decoding simultaneously, ROT when transmitting first with control is identical, sends the lifting of dispatching command Rate Grant (RG) order indication UE pointer with respect to previous dispatching cycle.Adjust a step-length to positive direction previous dispatching cycle when the speed ratio of NodeB expectation UE when retransmitting, the value of RG is changed to UP; Adjust a step-length to negative direction previous dispatching cycle when the speed ratio of Node B expectation UE when retransmitting, the value of RG is changed to DOWN (DN); Remain unchanged speed and the previous dispatching cycle when retransmitting when Node B expects UE, the value of RG is changed to DTX.TFC is according to the ascending ordering of pairing power, and just according to the ascending ordering of speed, ascending is positive direction.Then, Node B will turn to 502 action, decipher.

In this possibility, the action of Node B is compared with existing rate scheduling (RateScheduling) scheme, the lifting of the ROT of UE when transmitting first except the decision decision, send and transmit corresponding dispatching command RG first, also to determine the lifting of the ROT of UE in retransmission, and when send retransmitting with respect to the dispatching command RG of previous speed lifting dispatching cycle.Channel identical when transmitting is first still used in RG order when retransmitting.

Node B equipment under corresponding first kind of possibility, function based on the retransfer scheduling module of Node B is: at first, Node B is when retransmitting, transmit identical first with control, the ROT of expectation when retransmitting according to the situation of current ROT and the required power decision UE of E-DPDCH correct decoding, UE represents that with RG UE allows the variation corresponding to previous dispatching cycle of the maximum rate that uses then.At last, Node B sends RG to UE.

For a HARQ process, the action of the method for ROT was as follows when UE controlled re-transmission flexibly under first kind of possibility:

Fig. 6 has provided in the rate scheduling mode action flow chart of UE under first kind of possibility.

601UE receives the order RG of control ROT lifting when transmitting first.602UE upgrades UE pointer according to the value of RG: when the value of the Rate Grant (RG) that receives is UP, then UE pointer is with respect to adjusting a step-length to positive direction previous dispatching cycle; When the value of RG is DOWN (DN), then UE pointer is with respect to adjusting a step-length to negative direction previous dispatching cycle; When the value of RG is DTX, then UE pointer is with respect to remaining unchanged previous dispatching cycle, at this moment, is TFC#1 with respect to the transformat combination of UE pointer.

Then 603UE sends the E-DCH new data, and its transformat combination is TFC#1, and the transmitted power of the E-DPDCH when transmitting first is that the transmission block size TBS#1 (TBS that represents use when transmitting for the 1st time) of actual uses when transmitting first calculates.

If 604 UE receive ACK, then UE continues to send the E-DCH new data according to top operation 601,602,603; If UE receives NACK, then UE prepares data retransmission, 605UE receives the RG order that retransmits the ROT lifting from the control of NodeB, 606UE earlier upgrades UEpointer according to the value of RG: when the value of the Rate Grant (RG) that receives is UP, then UE pointer is with respect to adjusting a step-length to positive direction previous dispatching cycle; When the value of RG is DOWN (DN), then UE pointer is with respect to adjusting a step-length to negative direction previous dispatching cycle; When the value of RG is DTX, then UE pointer is with respect to remaining unchanged previous dispatching cycle.607UE derives virtual TFC by the pairing TFC of UE pointer: in possibility one, and the inferior transmission of corresponding i (i＞=2), virtual TFC is the pairing transformat combination TFC#i of UE pointer (i＞=2) after upgrading.UE pointer is according to the ascending ordering of the pairing power of TFC, and ascending is positive direction.

608UE calculates the transmitted power of E-DPDCH according to virtual TFC, and the control of E-DPDCH transmitted power is by adjusting the power ratio β of E-DPDCH and DPCCH _{D, eu}Realize.609UE during with transformat combination TFC#1 and the re-transmission that calculates E-DPDCH power send data retransmission.

The method of calculating the transmitted power of E-DPDCH according to virtual TFC in 608 has following two kinds:

The power calculation method one of E-DPDCH during re-transmission:

This method is applicable to the situation of E-DCH and DCH code division multiplexing.E-DCH is mapped to respectively on the different CcTrCH with DCH, and promptly an E-DCH is mapped on the CcTrCH, has only a TBS among the TFC.At this moment TFC can replace with TBS.

The basic principle of method one is: the TBS (TBS#1 of actual use when the transmitted power of UE when retransmitting equals virtual TBS (TBS#i) and retransmit, also be the TBS that uses when transmitting first) the pairing power of minimum value, if this power surpasses the operable maximum power of UE, then UE is with its operable maximum power transmission.In the method, the transmitted power of UE when retransmitting be smaller or equal to the pairing power of virtual TBS, also the pairing power of TBS that uses when transmitting first.

β when retransmitting _{D, eu}Calculating in, β _{D, eu}=f (TBS=min (TBS#i, TBS#1)).

Fig. 7 has provided and has controlled in the first kind of possibility that retransmits ROT the β during re-transmission in the power calculation method one of E-DPDCH in the corresponding speed scheduling flexibly _{D, eu}The hardware device figure of generator.

As shown in Figure 7,701 with 401,702 with 402,, 703 with 403,704 with 404,708 with 405.This figure launches 703 and 704.

Module 703 takes place and comprises a module in virtual TBS, and promptly virtual TBS generator 705, the input of virtual TBS generator 705 are the value of RG and current UE pointer.When the value of RG is UP, then UE pointer is updated to respect to adjusting a step-length to positive direction previous dispatching cycle; When the value of RG is DOWN (DN), then UE pointer is updated to respect to adjusting a step-length to negative direction previous dispatching cycle; When the value of RG is DTX, then UE pointer is updated to respect to remaining unchanged previous dispatching cycle.Virtual TBS generator is output as the pairing transformat combination TFC#i of UE pointer (i is a number of transmissions, i＞=2) after the renewal.UE pointer is according to the ascending ordering of the pairing power of TFC, and ascending is positive direction.

β during re-transmission _{D, eu}Computing module 704 comprises that one is got little comparator 706 and a β _{D, eu}Calculator 707.Get little comparator and be TBS#1 that will input and the size that the TBS#i of module 703 outputs takes place virtual TBS and compare, wherein minimum one of output.This minimum transmission block is sent into β _{D, eu}In the calculator 707, calculate β _{D, eu}, β _{D, eu}Calculator function when transmitting first when retransmitting is identical.

The power calculation method two of E-DPDCH during re-transmission:

This method is applicable to the situation of E-DCH and DCH code division multiplexing.E-DCH is mapped to respectively on the different CcTrCH with DCH, and promptly an E-DCH is mapped on the CcTrCH, has only a TBS among the TFC.At this moment TFC can replace with TBS.

The basic principle of method two is: the transmitted power of UE when retransmitting equals the corresponding power of virtual TBS (TBS#i), if this power surpasses the operable maximum power of UE, then UE is with its operable maximum power transmission.Compare with the method one in the possibility one, in the method two, the transmitted power of UE when retransmitting may surpass the pairing power of TBS (also being the TBS of use when transmitting first) of actual use when retransmitting.

β when retransmitting _{D, eu}Calculating in, β _{D, eu}=f (TBS=TBS#i).

Fig. 9 has provided and has controlled in the first kind of possibility that retransmits ROT the β during re-transmission in the power calculation method two of E-DPDCH in the corresponding speed scheduling flexibly _{D, eu}The hardware device figure of generator.

As shown in Figure 9,901 with 401,902 with 402,, 903 with 403,904 with 404,907 with 405.This figure launches 903 and 904.

Module 903 takes place and comprises a module in virtual TBS, and promptly virtual TBS generator 905, the input of virtual TBS generator 905 are the value of RG and current UE pointer.When the value of RG is UP, then UEpointer is updated to respect to adjusting a step-length to positive direction previous dispatching cycle; When the value of RG is DOWN (DN), then UE pointer is updated to respect to adjusting a step-length to negative direction previous dispatching cycle; When the value of RG is DTX, then UE pointer is updated to respect to remaining unchanged previous dispatching cycle.Virtual TBS generator is output as the pairing transformat combination TFC#i of UE pointer (i is a number of transmissions, i＞=2) after the renewal.UE pointer is according to the ascending ordering of the pairing power of TFC, and ascending is positive direction.

β during re-transmission _{D, eu}Computing module 904 comprises module, i.e. a β _{D, eu}Calculator 906.The output TBS#i of virtual TBS generator 905 is sent into β _{D, eu}In the calculator 907, calculate β _{D, eu}, β _{D, eu}Calculator function when transmitting first when retransmitting is identical.

Node B and UE action specification under second kind of possibility:

For a HARQ process, the action of the method for ROT was as follows when Node B controlled re-transmission flexibly under second kind of possibility:

Figure 22 has provided in the rate scheduling mode flow chart of Node B action under second kind of possibility.

The lifting of ROT when 2201Node B transmits first according to current ROT situation control.Adjust a step-length to positive direction previous dispatching cycle when the Node B expectation speed ratio of UE when transmitting first, the value of RG is changed to UP; Adjust a step-length to negative direction previous dispatching cycle when the Node B expectation speed ratio of UE when transmitting first, the value of RG is changed to DOWN (DN); UE remains unchanged speed and the previous dispatching cycle when transmitting first when Node B expectation, and the value of RG is changed to DTX.

2202Node B receives from the E-DCH data of UE and decoding.If 2203 decode results are correct, Node B sends ACK to UE, turns to 2201 then, continues to send the dispatching command of new data; If 2204 decode results are mistake, Node B sends NACK to UE.

The lifting of ROT when 2205Node B will retransmit according to the situation control of current ROT simultaneously, ROT when transmitting first with control is different, send the lifting of the speed that allows the speed used when dispatching command RG indication UE retransmits when transmitting first, the value of RG order change UE pointer.Adjust a step-length when the speed ratio of Node B expectation UE when retransmitting transmits first to positive direction, the value of RG is changed to UP; Adjust a step-length when the speed ratio of Node B expectation UE when retransmitting transmits first to negative direction, the value of RG is changed to DOWN (DN); Remain unchanged when Node B expects the speed of UE when retransmitting and transmission first, the value of RG is changed to DTX.TFC is according to the ascending ordering of pairing power, and ascending is positive direction.

After carrying out 2205, Node B turns to 2202, and data retransmission is deciphered.

In this possibility, the action of Node B is compared with existing rate scheduling (Rate Scheduling) scheme, the ROT of UE is with respect to the lifting of previous dispatching cycle when transmitting first except the decision decision, send and transmit corresponding dispatching command RG first, the ROT that also wants the required power decision UE in retransmission of the situation of current ROT and E-DPDCH correct decoding is with respect to the lifting of transmission first, and sends when retransmitting the dispatching command RG with respect to transmission rate lifting first.Compare with possibility one, in possibility two, RG represents be when retransmitting with respect to the lifting of transmission rate first, rather than when retransmitting with respect to the lifting of previous dispatching cycle of maximum rate; And the RG during re-transmission does not change the value of UE pointer.

Node B equipment under corresponding second kind of possibility, function based on the retransfer scheduling module of Node B is: at first, the ROT of expectation when Node B retransmits according to the situation of current ROT and the required power decision UE of E-DPDCH correct decoding when retransmitting, Node B represents that with RG UE allows the variation when transmitting first of the maximum rate that uses then.At last, Node B sends the RG that control retransmits to UE.

For a HARQ process, the action of the method for ROT was as follows when UE controlled re-transmission flexibly under second kind of possibility:

Figure 11 has provided in the rate scheduling mode flow chart of UE action under second kind of possibility.1101UE receives the order RG of control ROT lifting when transmitting first.1102UE upgrades UE pointer according to the value of RG: when the value of the Rate Grant (RG) that receives is UP, then UE pointer is with respect to adjusting a step-length to positive direction previous dispatching cycle; When the value of RG is DOWN (DN), then UE pointer is with respect to adjusting a step-length to negative direction previous dispatching cycle; When the value of RG is DTX, then UE pointer is with respect to remaining unchanged previous dispatching cycle.At this moment, the transformat combination with respect to UE pointer is TFC#1.UE pointer is according to the ascending ordering of the pairing power of TFC, and ascending is positive direction.

Then 1103UE sends the E-DCH new data, and its transformat combination is TFC#1, and the transmitted power of the E-DPDCH when transmitting first is that the transmission block size TBS#1 (TBS that represents use when transmitting for the 1st time) of actual uses when transmitting first calculates.

If 1104 UE receive ACK, then UE continues to send the E-DCH new data according to top operation 1101,1102,1103; If UE receives NACK, then UE prepares data retransmission, 1105UE receives the RG order that retransmits the ROT lifting from the control of NodeB, it is constant that 1106UE keeps UE pointer, the transformat combination TFC#1 of 1107UE actual use of UE by the value of RG and when transmitting first derives virtual transmission format combination TFC#i (the corresponding the number of transmissions of i, i＞=2): when the value of the Rate Grant (RG) that receives is UP, then virtual transmission format combination TFC#i is the transformat combination of transformat combination TFC#1 after positive direction is adjusted a step-length of using when transmitting first; When the value of RG is DOWN (DN), then virtual transmission format combination TFC#i is the transformat combination of transformat combination TFC#1 after negative direction is adjusted a step-length of using when transmitting first; When the value of RG is DTX, then the transformat combination TFC#1 that uses when transmitting first of virtual transmission format combination TFC#i is identical.TFC is according to the ascending ordering of pairing power, and ascending is positive direction.

1108UE calculates rate according to virtual TFC, and the control of E-DPDCH transmitted power is by adjusting the power ratio β of E-DPDCH and DPCCH _{D, eu}Realize.1109UE during with transformat combination TFC#1 and the re-transmission that calculates E-DPDCH power send data retransmission.

It is as follows to calculate the method for transmission merit of E-DPDCH according to virtual TFC in 1108: this method is applicable to the situation of E-DCH and DCH code division multiplexing.E-DCH is mapped to respectively on the different CcTrCH with DCH, and promptly an E-DCH is mapped on the CcTrCH, has only a TBS among the TFC.At this moment TFC can replace with TBS.

The basic principle of this method is: the transmitted power of UE when retransmitting equals the corresponding power of virtual TBS (TBS#i), if this power surpasses the operable maximum power of UE, then UE is with its operable maximum power transmission.

β when retransmitting _{D, eu}Calculating in, β _{D, eu}=f (TBS=TBS#i).

Figure 12 has provided and has controlled in the second kind of possibility that retransmits ROT the β during re-transmission in the power calculation method of E-DPDCH in the corresponding speed scheduling flexibly _{D, eu}The hardware device figure of generator.

As shown in figure 12,1201 with 401,1202 with 402,, 1203 with 403,1204 with 404,1207 with 405.This figure launches 1203 and 1204.

Module 1203 takes place and comprises a module in virtual TBS, and promptly virtual TBS generator 1205, the input of virtual TBS generator 1205 are the transformat TBS#1 that the value of RG and transmission are first used.When the value of RG is UP, then virtual transmission format combination TBS#i is the transformat of transformat TBS#1 after positive direction is adjusted a step-length that uses when transmitting first; When the value of RG is DOWN (DN), then virtual transmission form TBS#i is the transformat combination of transformat TBS#1 after negative direction is adjusted a step-length of using when transmitting first; When the value of RG is DTX, then the transformat TBS#1 that uses when transmitting first of virtual transmission form TBS#i is identical.Transformat is according to the ascending ordering of its corresponding power, and ascending is positive direction.

β during re-transmission _{D, eu}Computing module 1204 comprises module, i.e. a β _{D, eu}Calculator 1206.The output TBS#i of virtual TBS generator 1205 is sent into β _{D, eu}In the calculator 1207, calculate β _{D, eu}, β _{D, eu}Calculator function when transmitting first when retransmitting is identical.

The action specification of the apparatus and method for of ROT when control retransmits flexibly in speed and the time scheduling mode:

How to control the ROT of data retransmission, promptly how to indicate Node B desired destination ROT with dispatching command SA/RG, and UE how to adjust transmitted power according to dispatching command SA/RG be core of the present invention.

ROT when Node B retransmits according to current ROT situation control, ROT when transmitting first with control is identical, send the TFCS subclass that dispatching command SA indication UE allows use, it is the maximum rate that UE allows use, perhaps sending RG indication this time transmits UE and allows the TFCS subclass used with respect to the preceding relative value of adjusting when once transmitting, it is the lifting that UE allows the maximum rate of use, when RG is UP, then the maximum rate that allow to use of UE once transmits to positive direction before relatively and adjusts a step-length, when RG is DOWN, then the maximum rate that allow to use of UE once transmits to negative direction before relatively and adjusts a step-length, when RG is DTX, then the maximum rate that allow to use of UE once transmits constantly with respect to preceding, and TFC is a positive direction according to the ascending ordering of power demand.UE uses transformat combination identical when transmitting first when retransmitting, but the UE of transmitted power after being upgraded allows the control of the maximum rate that uses, allows the pairing power of maximum rate of use smaller or equal to UE.

For a HARQ process, the action of the method for ROT was as follows when Node B controlled re-transmission flexibly under speed and time scheduling mode:

Figure 17 has provided the flow chart of Node B action in speed and the time scheduling mode.

ROT when 1701Node B transmits first according to current ROT situation control, the explicit indication UE of transmission dispatching command Scheduling Assignment (SA) order allows the TFCS subclass of use, and promptly UE allows the maximum rate of use.1702Node B receives from the E-DPDCH data of UE and decoding.If 1703 decode results are correct, Node B sends ACK to UE, turns to 1701 continuation to send the dispatching command of new data then; If 1704 decode results are mistake, Node B sends NACK to UE.

ROT when 1705Node B will retransmit according to the situation of current ROT and the required power control of E-DPDCH correct decoding simultaneously, ROT when transmitting first with control is identical, send the TFCS subclass that the explicit indication UE of dispatching command Scheduling Assignment (SA) order allows use, it is the maximum rate that UE allows use, perhaps send RG indication and this time transmit UE and allow the TFCS subclass used with respect to the preceding relative value of adjusting when once transmitting, promptly UE allows the lifting of the maximum rate that uses.Turn to 1702 then, decipher.

The action of Node B is compared with time scheduling (Rate and time Scheduling) scheme with existing speed, the ROT of UE when transmitting first except decision, send and transmit corresponding dispatching command SA first, also to determine the ROT of UE in retransmission, and transmission and the corresponding dispatching command SA/RG of re-transmission.

For a HARQ process, the action of UE method of ROT when speed and the following control flexibly of time scheduling mode re-transmission is as follows:

The flow chart of UE action under Figure 18 has provided in speed and the time scheduling mode.

1801UE sends and is used for the information Scheduling Information (SI) that Node B dispatches, and comprises buffer status and power rating.1802UE receives the order SA of the ROT of control when transmitting first, and SA is explicit indicates UE and allow the maximum rate that sends.Then 1803UE sends the E-DCH new data, and its transformat combination is TFC#1, and the transmitted power of the E-DPDCH when transmitting first is that the transformat combination TFC#1 of actual use calculates when transmitting first, i.e. β _{D, eu}=f (TBS=TBS#1).If 1804 UE receive ACK, then UE continues to send the E-DCH new data according to top operation 1801,1802,1803; If UE receives NACK, then UE prepares data retransmission, 1805UE receives the SA/RG order that retransmits ROT from the control of NodeB, 1806UE upgrades the TFCS subclass that UE allows use according to the value of SA/RG, it is the maximum rate that UE allows use, virtual TFC is designated as TFC#i (i＞=2, i represents the number of transmissions) for the maximum rate that the UE after upgrading allows use.

UE calculates the transmitted power of E-DPDCH according to virtual TFC, and the control of E-DPDCH transmitted power is by adjusting the power ratio β of E-DPDCH and DPCCH _{D, eu}Realize.1808UE is with transformat combination TFC#1, and E-DPDCH power sends data retransmission during with the re-transmission that calculates.

The method of calculating the transmitted power of E-DPDCH according to virtual TFC in 1807 has following two kinds:

The power calculation method one of E-DPDCH during re-transmission:

This method is applicable to the situation of E-DCH and DCH code division multiplexing, and E-DCH is mapped to respectively on the different CcTrCH with DCH, and promptly an E-DCH is mapped on the CcTrCH, has only a TBS among the TFC.At this moment TFC can replace with TBS.

The basic principle of method one is: the TBS (TBS#1 of actual use when the transmitted power of UE when retransmitting equals virtual TBS (TBS#i) and retransmit, also be the TBS that uses when transmitting first) the pairing power of minimum value, if this power surpasses the operable maximum power of UE, then UE is with its operable maximum power transmission.In the method, the transmitted power of UE when retransmitting be smaller or equal to the pairing power of virtual TBS, also the pairing power of TBS that uses when transmitting first.

β when retransmitting _{D, eu}Calculating in, β _{D, eu}=f (TBS=min (TBS#i, TBS#1)).

Figure 19 has provided in corresponding speed and the time scheduling scheme β in the power calculation method one of E-DPDCH when retransmitting _{D, eu}The hardware device figure of generator.

As shown in figure 19,1901 with 401,1902 with 402,, 1903 with 403,1904 with 404,1908 with 405.This figure launches 1903 and 1904.

Module 1903 takes place and comprises a module in virtual TBS, and promptly virtual TBS generator 1905, the input of virtual TBS generator 1905 are the SA/RG order.UE upgrades the TFCS subclass that UE allows use according to the value of SA/RG, and promptly UE allows the maximum rate of use.Virtual TBS generator is output as the maximum rate that the UE permission after the renewal is used, and is designated as TBS#i.

β during re-transmission _{D, eu}Computing module 1904 comprises that one is got little comparator 1906 and a β _{D, eu}Calculator 1907.Get little comparator and be TBS#1 that will input and the size that the TBS#i of module 1903 outputs takes place virtual TBS and compare, wherein minimum one of output.This minimum transmission block is sent into β _{D, eu}In the calculator 1907, calculate β _{D, eu}, β _{D, eu}Calculator function when transmitting first when retransmitting is identical.

E-DPDCH/DPCCH power ratio Aj computational methods two during re-transmission:

This method is applicable to the situation of E-DCH and DCH code division multiplexing.E-DCH is mapped to respectively on the different CcTrCH with DCH, and promptly an E-DCH is mapped on the CcTrCH, has only a TBS among the TFC.At this moment TFC can replace with TBS.

The basic principle of method two is: the transmitted power of UE when retransmitting equals the corresponding power of virtual TBS (TBS#i), if this power surpasses the operable maximum power of UE, then UE is with its operable maximum power transmission.Compare with method one, in the method two, the transmitted power of UE when retransmitting may surpass the pairing power of TBS that uses when transmitting first.

β when retransmitting _{D, eu}Calculating in, β _{D, eu}=f (TBS=TBS#i).

Figure 21 has provided the β in the power calculation method two of E-DPDCH in corresponding speed and the time scheduling scheme _{D, eu}The hardware device figure of generator.

As shown in figure 21,2101 with 401,2102 with 402,, 2103 with 403,2104 with 404,2107 with 405.This figure launches 2103 and 2104.

Module 2103 takes place and comprises a module in virtual TBS, and promptly virtual TBS generator 2105, the input of virtual TBS generator 2105 are the value of SA/RG.UE upgrades the TFCS subclass that UE allows use according to the value of SA/RG, and promptly UE allows the maximum rate of use.Virtual TBS generator 2105 is output as the maximum rate that the UE permission after the renewal is used, and is designated as TBS#i.

β during re-transmission _{D, eu}Computing module 2104 comprises module, i.e. a β _{D, eu}Calculator 2106.The output TBS#i of virtual TBS generator 2105 is sent into β _{D, eu}In the calculator 2107, calculate β _{D, eu}, β _{D, eu}Calculator function when transmitting first when retransmitting is identical.

Claims (45)

1. method of controlling data retransmission ROT in the rate scheduling mode, comprises step:

After Node B receives data from UE, decipher, if decipher incorrectly, NodeB sends NACK to UE, requires the UE data retransmission;

During data retransmission,

The variation of the target ROT of Node B decision data retransmission;

Node B indicates UE in retransmission to allow the lifting of the maximum rate of use with dispatching command RG;

UE extrapolates the virtual transmission format combination according to the dispatching command RG of the corresponding re-transmission that Node B sends, thereby derives the transmitted power of E-DPDCH channel when retransmitting;

UE uses transformat combination identical when transmitting first, sends data retransmission with the E-DPDCH channel the derived transmitted power when the re-transmission.

2. by the described method of claim 1, the variation that it is characterized in that the target ROT of described data retransmission is will to be decided according to situation and the required power of E-DPDCH correct decoding of current ROT by Node B.

3. by the described method of claim 1, it is characterized in that described RG order is used to indicate UE in retransmission to allow the lifting of the maximum rate of use, and be used for UE reckoning virtual transmission format combination, and then derive the transmitted power of E-DPDCH channel when retransmitting.

4. by the described method of claim 3, it is characterized in that, comprise step:

Node B sends the lifting of dispatching command RG indication UE pointer with respect to previous dispatching cycle when retransmitting;

UE uses transmission block identical when transmitting first when retransmitting, but the UE pointer of transmitted power after being upgraded control, smaller or equal to the pairing power of UE pointer.

5. by the described method of claim 4, it is characterized in that being produced as of the described RG order that sends from Node B:

Move a step-length to positive direction previous dispatching cycle when Node B expects the speed ratio of UE when retransmitting, the value of RG is changed to UP;

Move a step-length to negative direction previous dispatching cycle when Node B expects the speed ratio of UE when retransmitting, the value of RG is changed to DOWN;

Remain unchanged speed and the previous dispatching cycle when retransmitting when Node B expects UE, the value of RG is changed to DTX;

TFC is according to the ascending ordering of pairing power, and ascending is positive direction.

6. by the described method of claim 4, it is characterized in that described UE uses transmission block TBS#1 identical when transmitting first when retransmitting, but the UE pointer of transmitted power after being upgraded control,, comprise step less than the pairing power of UE pointer:

UE receives the RG order that is used to control re-transmission;

UE orders according to RG UE pointer is upgraded, and draws virtual TFC;

UE utilizes virtual TFC to calculate the transmitted power of E-DPDCH when retransmitting;

UE during with transformat combination TFC#1 and the re-transmission that calculates E-DPDCH power send data retransmission.

7. by the described method of claim 6, it is characterized in that the renewal of described UE pointer comprises:

When the value corresponding to the RG that retransmits that receives is UP, then UE pointer is with respect to adjusting a step-length to positive direction previous dispatching cycle;

When the value of RG is DOWN, then UE pointer is with respect to adjusting a step-length to negative direction previous dispatching cycle;

When the value of RG is DTX, then UE pointer is with respect to remaining unchanged previous dispatching cycle;

UE pointer is according to the ascending ordering of the pairing power of TFC, and ascending is positive direction.

8. by the described method of claim 6, the derivation that it is characterized in that virtual TFC is drawn by the pairing TFC of UE pointer, the inferior transmission of corresponding i (i＞=2), virtual TFC is the pairing transformat combination TFC#i of UE pointer (i＞=2) after upgrading.

9. by the described method of claim 6, it is characterized in that the E-DPDCH transmitted power when described UE utilizes virtual TFC to calculate re-transmission, comprise: the pairing power of minimum value of the TFC (TFC#1) of actual use when the E-DPDCH transmitted power equals virtual TFC (TFC#i) and retransmits during re-transmission, if this power surpasses the operable maximum power of UE, then UE is with its operable maximum power transmission.

10. by the described method of claim 9, the control that it is characterized in that described E-DPDCH transmitted power is the power ratio β that adjusts E-DPDCH and DPCCH by UE according to virtual TFC _{D, eu}Realize,, comprising: β when retransmitting for E-DCH and DCH code division multiplexing _{D, eu}Calculating in, β _{D, eu}Be minimum value according to virtual TBS TBS of actual use when retransmitting, i.e. min{TBS#1, TBS#i} calculates.

11. by the described method of claim 6, it is characterized in that the E-DPDCH transmitted power that described UE utilizes virtual TFC to calculate when retransmitting comprises: the transmitted power of UE when retransmitting equals the pairing power of virtual TFC (TFC#i), if this power surpasses the operable maximum power of UE, then UE is with its operable maximum power transmission.

12. by the described method of claim 11, the control that it is characterized in that described E-DPDCH transmitted power is the power ratio β that adjusts E-DPDCH and DPCCH by UE according to virtual TFC _{D, eu}Realize, for E-DCH and DCH code division multiplexing, β when retransmitting _{D, eu}Calculating in, β _{D, eu}Calculate according to virtual TBS (TBS#i).

13. by the described method of claim 3, it is characterized in that, comprise step:

Node B sends the lifting of the speed that allows the speed used when dispatching command RG indication UE retransmits when transmitting first, does not change the value of UE pointer;

UE uses transmission block TBS#1 identical when transmitting first when retransmitting, but the UE of transmitted power after being upgraded allows to use the control of speed when retransmitting, and allows the pairing power of speed of use smaller or equal to UE.

14., it is characterized in that by the described method of claim 13:

Adjust a step-length when the speed ratio of Node B expectation UE when retransmitting transmits first to positive direction, the value of RG is changed to UP;

Adjust a step-length when the speed ratio of Node B expectation UE when retransmitting transmits first to negative direction, the value of RG is changed to DOWN;

Remain unchanged when Node B expects the speed of UE when retransmitting and transmission first, the value of RG is changed to DTX;

TFC is according to the ascending ordering of pairing power, and ascending is positive direction.

15. by the described method of claim 13, it is characterized in that described UE uses transmission block TBS#1 identical when transmitting first when retransmitting, but allow to use the control of speed when the UE after transmitted power is upgraded retransmits, the pairing power of speed that allows to use smaller or equal to UE comprises step:

UE orders according to RG and derives virtual TFC, and UE pointer is constant;

Utilize virtual TFC to calculate the transmitted power of the E-DPDCH when retransmitting;

UE during with transformat combination TFC#1 and the re-transmission that calculates E-DPDCH power send data retransmission.

16. by the described method of claim 15, it is characterized in that described UE by the value of RG and the transformat combination TFC#1 of the actual use of UE when transmitting first derive virtual transmission format combination TFC#i (i correspondence the number of transmissions, i＞=2):

When the value of the RG that receives is UP, then virtual transmission format combination TFC#i is the transformat combination of transformat combination TFC#1 after positive direction is adjusted a step-length of using when transmitting first;

When the value of RG is DOWN, then virtual transmission format combination TFC#i is the transformat combination of transformat combination TFC#1 after negative direction is adjusted a step-length of using when transmitting first;

When the value of RG is DTX, then the transformat combination TFC#1 that uses when transmitting first of virtual transmission format combination TFC#i is identical;

TFC is according to the ascending ordering of its pairing power, and ascending is positive direction.

17. by the described method of claim 15, it is characterized in that described UE utilizes virtual TFC to calculate the transmitted power of the E-DPDCH when retransmitting, comprise: the transmitted power of UE when retransmitting equals the pairing power of virtual TFC (TFC#i), if this power surpasses the operable maximum power of UE, then UE is with its operable maximum power transmission.

18. by the described method of claim 17, the control that it is characterized in that described E-DPDCH transmitted power is the power ratio β that adjusts E-DPDCH and DPCCH by UE according to virtual TFC _{D, eu}Realize, for E-DCH and DCH code division multiplexing, β when retransmitting _{D, eu}Calculating in, β _{D, eu}Calculate according to virtual TBS (TBS#i).

19. Node B transmitter of controlling data retransmission ROT, in the rate scheduling mode, it is characterized in that comprising scheduler module, described scheduler module comprises initial transmission scheduler module and retransfer scheduling module, wherein, the dispatching command of control transmission first is by transmitting and scheduling module output first, and the dispatching command that control retransmits is exported by the retransfer scheduling module.

20. a terminal equipment of controlling data retransmission ROT in the rate scheduling mode, comprises β _{D, eu}Module takes place, and is used to produce the gain factor β of E-DPDCH channel _{D, eu}

21., it is characterized in that described β by the described terminal equipment of claim 20 _{D, eu}The generation module comprises:

Transmit β first _{D, eu}Computing module, the TBS (TBS#1) that uses according to transmission first calculates the β of transmission first _{D, eu}

Module takes place in virtual TBS during re-transmission, is used for extrapolating the maximum rate that Node B expectation UE reaches from the RG order;

β during re-transmission _{D, eu}Computing module, the transmission block TBS#1 of actual use calculated β when the TBS#i as a result of virtual TBS generator was with re-transmission during according to re-transmission _{D, eu}

Number selects device MUX, is used for selecting output to transmit β first _{D, eu}β when computing module and re-transmission _{D, eu}The β that computing module calculates _{D, eu}As a result, select the control end of device MUX as number with the number of transmissions.

22. by the described terminal equipment of claim 21, virtual TBS generation module comprises when it is characterized in that described re-transmissions:

Virtual TBS generator is used for

When the value of the RG of virtual TBS generator input is UP, then UE pointer is updated to respect to adjusting a step-length to positive direction previous dispatching cycle;

When the value of RG is DOWN, then UE pointer is updated to respect to adjusting a step-length to negative direction previous dispatching cycle;

When the value of RG is DTX, then UE pointer is updated to respect to remaining unchanged previous dispatching cycle;

Virtual TBS generator is output as the pairing transformat combination TFC#i of UE pointer (i is a number of transmissions, i＞=2) after the renewal;

UE pointer is according to the ascending ordering of the pairing power of TFC, and ascending is positive direction.

23. by the described terminal equipment of claim 21, virtual TBS generation module comprises when it is characterized in that described re-transmissions:

Virtual TBS generator is used for:

When the value of the RG of virtual TBS generator input is UP, then virtual transmission format combination TBS#i is the transformat of transformat TBS#1 after positive direction is adjusted a step-length that uses when transmitting first;

When the value of RG is DOWN, then virtual transmission form TBS#i is the transformat combination of transformat TBS#1 after negative direction is adjusted a step-length of using when transmitting first;

When the value of RG is DTX, then the transformat TBS#1 that uses when transmitting first of virtual transmission form TBS#i is identical;

Transformat is according to the ascending ordering of its corresponding power, and ascending is positive direction.

24. by the described terminal equipment of claim 21, β when it is characterized in that described re-transmission _{D, eu}Computing module comprises:

Get little comparator, the TBS#i that module exports takes place and compares in the TBS (TBS#1) of actual uses and virtual TBS when being used for the re-transmission with input, export minimum wherein one;

β _{D, eu}Calculator calculates β according to the output of getting little comparator _{D, eu}

25. by the described terminal equipment of claim 21, β when it is characterized in that described re-transmission _{D, eu}Computing module comprises:

β _{D, eu}Calculator calculates β according to the output of virtual TBS generator _{D, eu}

26. a method of controlling data retransmission ROT in speed and time scheduling mode, comprises step:

After Node B received data from UE, if decipher incorrectly, Node B sent NACK to UE, requires the UE data retransmission;

During data retransmission,

The target ROT (i.e. the received power of Qi Wang data retransmission) of Node B decision data retransmission;

Node B is with the maximum rate that dispatching command Scheduling Assignment (SA) indicates UE in retransmission allow to use, and perhaps uses Rate Grant (RG) indication this time to retransmit UE and allows the maximum rate that uses with respect to preceding lifting when once transmitting;

UE derives the virtual transmission format combination according to the dispatching command SA/RG of the corresponding re-transmission that Node B sends, thereby derives the transmitted power of E-DPDCH channel when retransmitting;

UE uses transformat combination identical when transmitting first, sends data retransmission with the E-DPDCH channel the derived transmitted power when the re-transmission.

27. by the described method of claim 26, the target ROT that it is characterized in that described data retransmission is decided according to situation and the required power of E-DPDCH correct decoding of current ROT by Node B.

28. by the described method of claim 26, it is characterized in that described dispatching command SchedulingAssignment (SA), the UE of the indication NodeB decision that is used to show allows the TFCS subclass of use when retransmitting, and be used for UE and calculate the virtual transmission format combination, and then derive the transmitted power of E-DPDCH channel when retransmitting.

29. by the described method of claim 26, it is characterized in that described dispatching command Rate Grant (RG) indication this time retransmits UE and allows the maximum rate that uses with respect to preceding lifting when once transmitting, thereby the UE of the latent indication NodeB decision of showing allows the TFCS subclass used when retransmitting:

When RG is UP, once transmits to positive direction before then UE allows the maximum rate that uses relatively and adjust a step-length;

When RG is DOWN, once transmits to negative direction before then UE allows the maximum rate that uses relatively and adjust a step-length;

When RG is DTX, then UE allow the maximum rate that uses with respect to preceding once transmit constant.

30. by the described method of claim 26, it is characterized in that described UE derives the virtual transmission format combination according to the dispatching command SA/RG of the corresponding re-transmission that Node B sends, thereby derive the transmitted power of E-DCH data channel when retransmitting, comprise step:

UE receives the SA/RG order that retransmits ROT from the control of NodeB;

UE upgrades the maximum rate that allows use when UE retransmits according to the value of SA/RG, draws virtual TFC;

Utilize virtual TFC to calculate the transmitted power of the E-DPDCH when retransmitting.

31., it is characterized in that when dispatching command is SA that the maximum rate that allows use when the UE after the described renewal retransmits is the maximum TFC in the pairing TFCS subclass of SA by the described method of claim 30.

32., it is characterized in that when dispatching command is RG that the maximum rate that allows when the UE after the described renewal retransmits to use is by the described method of claim 30:

When RG is UP, the maximum rate that UE allows to use when once transmitting before is relatively adjusted a step-length to positive direction;

When RG is DOWN, the maximum rate that UE allows to use when once transmitting before is relatively adjusted a step-length to negative direction;

When RG is DTX, with respect to preceding when once transmitting UE allow the maximum rate that uses constant.

33., it is characterized in that RG represents with three value informations of 1bit by the described method of claim 30 :+1 ,-1, DTX.

34., it is characterized in that described virtual TFC allows the maximum rate that uses when retransmitting for the UE after upgrading, be designated as TFC#i (i＞=2, i represents the number of transmissions) by the described method of claim 30.

35. by the described method of claim 30, the pairing power of minimum value that it is characterized in that the TFC (TFC#1) of actual use when the E-DPDCH transmitted power of described UE when retransmitting equals virtual TFC (TFC#i) and re-transmission, if this power surpasses the operable maximum power of UE, then UE is with its operable maximum power transmission.

36. by the described method of claim 35, the control that it is characterized in that described E-DPDCH transmitted power is the power ratio β that adjusts E-DPDCH and DPCCH by UE according to virtual TFC _{D, eu}Realize, for E-DCH and DCH code division multiplexing, β when retransmitting _{D, eu}Calculating in, β _{D, eu}Be minimum value according to virtual TBS TBS of actual use when retransmitting, i.e. min{TBS#1, TBS#i} calculates.

37. by the described method of claim 30, it is characterized in that the transmitted power of described UE when retransmitting equals the pairing power of virtual TFC, if this power surpasses the operable maximum power of UE, then UE is with its operable maximum power transmission.

38. by the described method of claim 37, the control that it is characterized in that described E-DPDCH transmitted power is the gain factor β that adjusts the E-DPDCH channel by UE according to virtual TFC _{D, eu}Realize, for E-DCH and DCH code division multiplexing, β when retransmitting _{D, eu}Calculating in, β _{D, eu}Be that promptly TBS#i calculates according to virtual TBS.

39. Node B transmitter of controlling data retransmission ROT, in speed and time scheduling mode, it is characterized in that also comprising scheduler module, described scheduler module comprises initial transmission scheduler module and retransfer scheduling module, wherein, the dispatching command of control transmission first is by transmitting and scheduling module output first, and the dispatching command that control retransmits is exported by the retransfer scheduling module.

40. a terminal equipment of controlling data retransmission ROT, in speed and time scheduling mode, the transmitter of terminal equipment comprises β _{D, eu}Module takes place, and is used to produce the gain factor β of E-DPDCH channel _{D, eu}

41., it is characterized in that described β by the described terminal equipment of claim 40 _{D, eu}The generation module comprises:

Transmit β first _{D, eu}Computing module, the TBS (TBS#1) that uses according to transmission first calculates the β of transmission first _{D, eu}

Module takes place in virtual TBS during re-transmission, is used for extrapolating the maximum rate that Node B expectation UE reaches from the SA/RG order;

β during re-transmission _{D, eu}Computing module, the transmission block TBS#1 of actual use calculated β when the TBS#i as a result of virtual TBS generator was with re-transmission during according to re-transmission _{D, eu}

Number selects device MUX, is used for selecting output to transmit β first _{D, eu}The β that computing module calculates when computing module and re-transmission _{D, eu}As a result, select the control end of device MUX as number with the number of transmissions.

42. by the described terminal equipment of claim 41, virtual TBS generation module is used for when it is characterized in that described re-transmissions:

When dispatching command is SA, virtual TBS is set is the maximum TBS during re-transmission in the pairing TFCS subclass of SA.

43. by the described terminal equipment of claim 41, virtual TBS generation module is used for when it is characterized in that described re-transmissions:

When dispatching command is RG, virtual TBS is set is,

When RG is UP, virtual TBS for respect to preceding when once transmitting UE allow the maximum rate that uses corresponding TBS after positive direction is adjusted a step-length;

When RG is DOWN, virtual TBS for respect to preceding when once transmitting UE allow the maximum rate that uses corresponding TBS after negative direction is adjusted a step-length;

When RG is DTX, virtual TBS is the pairing TBS that remains unchanged with respect to the preceding maximum rate that UE allows to use when once transmitting;

44. by the described terminal equipment of claim 41, β when it is characterized in that described re-transmission _{D, eu}Computing module comprises:

Get little comparator, the TBS#i that module exports takes place and compares in TBS of actual uses when being used for the re-transmission with input (TBS#1, when transmitting first identical) and virtual TBS, export minimum wherein one;

β _{D, eu}Calculator calculates β according to the output of getting little comparator _{D, eu}

45. by the described terminal equipment of claim 41, β when it is characterized in that described re-transmission _{D, eu}Computing module comprises:

β _{D, eu}Calculator calculates β according to the output of virtual TBS generator _{D, eu}

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