CN100574137C - The method and apparatus that uplink rate in the wireless communication system of a plurality of transmission channels is arranged is selected - Google Patents

Abstract

The invention provides and be used to be chosen under the situation with one or more secondary uplink, at the system and method for the data rate of primary uplink transmitting data.An embodiment comprises a kind of method, this method comprises to be determined and the relevant probable value of number of times of attempting transfer of data, determine the number of times of the unsettled transfer of data attempted, determine the probability relevant and be the transfer of data distribution power in the frame subsequently based on dependent probability with transfer of data.In one embodiment, the highest data rate that is supported of initial selected primary uplink.Then, distribute power for the minimum channel collection on the primary uplink.Then, distribute power for unsettled transfer of data on the secondary uplink.Then, the power level of maximum of adjusting transceiver to be satisfying the power that is distributed, and recomputates the highest supported data rate of primary uplink.

Description

The method and apparatus that uplink rate in the wireless communication system of a plurality of transmission channels is arranged is selected

Related application

Present patent application required submitted on 20th in 2003 8, provisional application number is 60/496,952, name is called the priority of the patent application of " being used for the method and apparatus that wireless communication system is selected at the uplink rate that has under a plurality of transmission channel situations ", and transfer its assignee, clearly be combined in herein by reference thus.

Technical field

The present invention relates generally to a kind of communication system, particularly relate to and be used for the system and method that wireless communication system is selected at the uplink rate that has under a plurality of transmission channel situations.

Background technology

The wireless telecommunications system of demonstration can be according to the 3GPP standard, and version 99 designs, and it is known for those skilled in the art, and is combined in herein by reference thus.In this system, base station controller is connected to a plurality of basic transceiver stations or base station.Many the base stations that are connected to base station controller can be arranged.Base station controller typically is connected with the base station by network, and this network typically is called backhaul network.

Each base station can communicate with a plurality of travelling carriages in the overlay area of this base station.And, a plurality of travelling carriages that communicate with the base station can be arranged in the overlay area of base station.Travelling carriage communicates by Radio Link and base station.Radio Link comprises one group of channel and one group of channel that transmits data from travelling carriage to the base station of being used for transmitting to travelling carriage from the base station data.First group of channel (from the base station to travelling carriage) is called forward link.Second group of channel (from travelling carriage to the base station) is called reverse link.

In this system, when travelling carriage has the data that need be transferred to the base station, from travelling carriage to the base station transmits request.This request is that request allows transfer of data with travelling carriage to the base station.After the base station received request, in response to this request, it can be to travelling carriage issue permission.This permission allow travelling carriage with the maximum data rate of the assignment interval of regulation to the base station transmits data.

When travelling carriage received permission, travelling carriage was determined the suitable data speed of its data of transmission, then in the interim of distributing, and the data rate transport data to select on the data channel of special use.Travelling carriage restricts the data rate that is chosen in special-purpose data channel transmitting data based on its power to a great extent.For example, in this system, travelling carriage has the maximum power (for example 125 milliwatts) that it can transmit its data, so select data rate should be unable to cause travelling carriage to exceed its maximal power level.In this system, check the historical record (about with the required quantity of power of given data rate transport) of travelling carriage, to determine the maximum permitted data rate corresponding with the power level that is lower than maximum level.

Yet, select the straightforward procedure of data rate only to consider single channel (dedicated data channel), and if do not provide travelling carriage under a plurality of channel data conditions, to carry out the acceptable method that data rate is selected.Therefore need be provided at the system and method for selecting data rate under the situation with a plurality of channels.

Summary of the invention

Embodiments of the invention disclosed herein by a kind of mechanism that is used to be chosen under the situation with one or more secondary uplink channels at the data rate of primary uplink transmitting data is provided, solve above-mentioned one or more needs.

An embodiment comprises a kind of method of implementing in the remote transceiver of wireless communication system, wherein transceiver configuration becomes to retransmit unsettled data on secondary uplink, is confirmed or up to the re-transmission of having carried out maximum number of times up to data.This method comprises to be determined and the relevant probable value of trial data transmission times, for in a plurality of unsettled transfer of data each, the number of times of definite transfer of data of having attempted, determine the probability relevant with number of attempt, and, distribute the data transmission utilization measure in the next frame based on the probability relevant with number for transmission attempts.

In one embodiment, this method comprises and uses conventional method to be the highest data rate of supporting of primary uplink initial selected.In the method,, select the highest data rate in these data rates then, select data rate by the data rate of determining formerly can support in the frame at one group.After the original data rate of determining primary uplink, the minimum channel collection on the primary uplink is distributed power.Then, the unsettled transfer of data on the secondary uplink is distributed power.Then, consider the power of distribution, adjust the maximal power level of transceiver, and recomputate the highest data rate of supporting of primary uplink.

An alternative embodiment comprises the transceiver that is configured to transmit by wireless communication link data.In this embodiment, transceiver configuration becomes to retransmit unsettled data on secondary channels, is confirmed or up to the re-transmission of having carried out maximum number of times up to data.Transceiver further is configured to determine attempt the relevant probable value of transfer of data with one or many.Then, for each transfer of data in a plurality of unsettled transfer of data, transceiver is determined the number of times that the transfer of data of having carried out is attempted in one or more frames formerly, determine the probability relevant with the data transmission times of having attempted, and based on the data transmission utilization measure in the probability assignments frame subsequently relevant with the data transmission times of having attempted.

Another optional embodiment comprises the storage medium that can be read by processor, and it includes the program command that makes processor carry out said method.In one embodiment, processor is the assembly of wireless transceiver, instruction on the storage medium is configured to processor to determine and the relevant probable value of number of times of attempting transfer of data, for in a plurality of unsettled transfer of data each, the number of times of definite transfer of data of having attempted, determine the probability relevant with number of attempt, and based on the probability assignments relevant with the number for transmission attempts data transmission utilization measure in the frame subsequently.

The embodiment that also has plurality of replaceable.

Description of drawings

By with reference to the accompanying drawings, following detailed description discloses different technical scheme of the present invention and feature, wherein:

Fig. 1 is the structure chart according to the wireless telecommunications system of an embodiment;

Fig. 2 is that a travelling carriage among the embodiment is to the employed power diagram of base station transmits data;

Fig. 3 is the sequential chart according to the transmission on the channel of the enhanced uplink of an embodiment;

Fig. 4 is the flow chart according to the method for an embodiment.

Though can carry out different modifications and become replaceable form the present invention, in accompanying drawing and appended detailed description, show its specific embodiment with method for example.Yet should be understood that drawings and detailed description are not the present invention to be defined in described certain embodiments.

Embodiment

Below one or more embodiment of the present invention are described.Should be noted in the discussion above that these and any other embodiment described below are exemplary, just for the present invention will be described rather than it is limited.

As described herein, various embodiments of the present invention comprise under the situation that is used to be chosen in one or more secondary uplink channels the system and method at the data rate of primary uplink transmitting data.In one embodiment, wireless communication system uses a plurality of channels to transmit data between base station and travelling carriage.These channels comprise a plurality of forward link channels that are used for transmitting to travelling carriage from the base station data, and a plurality of being used for from the reverse chain channel of travelling carriage to the base station transmits data.In order to select by the data rate of reverse chain channel to the base station transmits data, the travelling carriage in this system is considered historical information and to the expection requirement of data speed and through-put power.

In this embodiment, travelling carriage is determined the supported one group of possible data rate of first channel (for example dedicated data channel) based on the relation of the transfer of data in the frame pitch formerly and these transmission and maximal power level.Travelling carriage is determined the estimating power demand of second channel (for example enhanced uplink channel) also based on the transmission that will carry out on this channel in frame on the horizon.Then, travelling carriage is will be at the minimum channel collection energy reserve of first channel, be the data reserve energy that will on second channel, transmit, and calculate after the data reserve energy that on for second channel, will transmit the peak data rate that on first channel, still can support.

One embodiment of the present of invention are to realize in wireless telecommunications system, and this wireless telecommunications system is the different editions according to the 3GPP standard, comprise version 99 and version 6, design.Therefore, describe the basic structure and the operation of this system, will help to help to understand the present invention.Substantially concentrate on the system according to this standard though should be noted in the discussion above that following description, alternate embodiments also can realize in the system according to other standard.

With reference to accompanying drawing 1, shown in this figure is structure chart according to the wireless telecommunications system of an embodiment.System 100 comprises base station controller 110, is connected to the base station 120 and the travelling carriage 140 of base station controller 110 by backhaul network 130.System 100 can comprise other base station and travelling carriage, does not illustrate in the drawings for easy.

In the different editions of 3GPP standard, be used to represent that the term of system component is slightly different.For example base station controller 110 can be called radio network controller (RNC), and base station 120 can be called " Node B ", and travelling carriage 140 can be called subscriber equipment (UE).Because different embodiments of the invention can realize in dissimilar wireless communication system (for example according to various criterion or uniform different editions designed system), so extensively understand different the quoting of assembly of system, and the quoting of specific components of term that use be can be applicable to the system of particular type should not be considered to be meant the system that embodiments of the invention is defined in particular type.

Referring again to the system shown in Fig. 1, if travelling carriage 140 has the data that need transmit to base station 120, it is to base station 120 transmission requests, the mandate of application transmission data.In response to this request, base station 120 can be to travelling carriage 140 transmission permissions.This permission travelling carriage 140 transmits data with predetermined data speed to base station 120.After travelling carriage 140 received permission, it can begin during radio frames subsequently to base station 120 transmission data.

Travelling carriage 140 typically is not (although it may be fixed in some cases) of fixing.Travelling carriage 140 may move with respect to base station 120 on the contrary.Typically, the variation of travelling carriage 140 positions makes the channel status of the Radio Link between travelling carriage 140 and the base station 120 change.Channel status also may be subjected to the influence of other factors, such as the motion of other object between atmospheric condition, travelling carriage 140 and the base station 120, from interference of other reflector or the like.

Concentrate on the system that travelling carriage can move with respect to the base station though should be noted in the discussion above that herein explanation to this embodiment and other embodiment, can in the system that can carry out radio communication between the equipment in alternative type, realize other embodiment.One in the equipment needn't be " base station ", and another equipment also not necessarily " moves ".Therefore, should be interpreted as comprising any wireless transmitting-receiving equipments of intercommunication mutually to quoting of travelling carriage and base station herein.

Because the variation of the channel status of wireless communication link, travelling carriage 140 may change to the data rate of base station 120 transmission data.Travelling carriage 140 is used to transmit these variations of the data rate of data, provides sufficiently high signal to noise ratio, SNR, and (perhaps signal is to disturbing and the noise ratio, and is SINR) necessary, makes that base station 120 will be with acceptable error rate reception data.Channel status is good more, and the data rate that travelling carriage can use is just high more.Channel status is poor more, and typically, the data rate that travelling carriage need use is just low more.

The data rate that travelling carriage 140 can transmit data not only is subjected to the channel status restriction, and is subjected to the restriction of the power constraint of travelling carriage.Proportional with power and data rate that special speed transmission data are required.Like this, the power ratio that is consumed with lower data rate transport data will be lacked with higher data rate transmissioning data desired power.This is very important, because typically allow travelling carriage 140 with maximal power level or be lower than maximal power level and transmit data.For example, in one embodiment, allow travelling carriage to use the maximum power of 125 milliwatts to transmit data.

In version 99, the data rate of particular channel is also referred to as transformat (TF).Because in fact the Dedicated Physical Data Channel of version 99 comprises a plurality of logic OR pseudo channels, the particular combinations of the data rate of these channels (or transformat) is called transformat combination (TFC).For for simplicity, independent data format and data format combination below will abbreviate data rate as.

The data rate of particular channel equal will data quantity transmitted divided by Transmission Time Interval or TTI.The data rate (TFC) of selecting to be fit to uplink channel is concentrated on each border between ten milliseconds of radio frames, travelling carriage from possible data rate.Various possible TFC can be called TFC collection or TFCS jointly.

As mentioned above, exist being used for transmitting the quantitative limitation of the power of data by travelling carriage 140.Therefore, exist respective limits to the speed that can transmit data.If be no more than the maximum allowable power level with the required power of special speed (or with specific T FC) transmission data, then in travelling carriage power constraint scope, this specific data rate is supported.In other words, can support the transfer of data of carrying out with travelling carriage maximum or that be lower than the maximum allowable power operation with this data rate.On the other hand, if will cause travelling carriage to exceed its maximal power level with these special speed transmission data, generally speaking this data rate can not be supported.

With reference to accompanying drawing 2, the figure shows the power diagram that a travelling carriage among the embodiment uses to the base station transmits data.In this embodiment, data are transferred to base station 120 from travelling carriage 140 on ten milliseconds of radio frames 210.Data are to use selected data rate (TFC) transmission, and the power of use respective amount is with this rate transmissioning data.Curve 211 expression travelling carriages 140 are used for transmitting the actual use power of data.Can see that the employed power of transmission data changes, with the variation of compensate for channel state in the interval that frame 210 covers.Travelling carriage 140 used power do not exceed the maximal power level (with dashed lines 230 expressions) of travelling carriage.Therefore, the used specific data rate of travelling carriage 140 transmission data is supported.

Specific data rate whether can supported this problem in next frame have the answer determined, because also not transmission of data, and the channel status of (promptly when the actual transmissions data) will be how about after can not knowing for sure.Therefore determine that whether each possible data rate is supported, is based on the nearest historical record of the transfer of data of travelling carriage.More specifically, the travelling carriage inspection is the amount with the required power of particular rate transmission data in previous interim, and supposes that the channel status of each data rate and corresponding power demand will be roughly the same.Like this, if previous interim data rate supported, then think next interim this data rate will be supported.

Referring again to accompanying drawing 2, the figure shows several different curves in frame 210.As mentioned above, curve 211 is illustrated in the actual employed power of these travelling carriage 140 transmission data image duration.Also mention above, this curve is lower than maximum power level 230, therefore thinks that this corresponding data rate is supported.Curve 212,213 and 214 expressions are used under identical channel status but transmit the power of identical data with different data rates.Curve 212 and 213 is corresponding to lower data rate, thereby the less power of needs transmit data.Therefore these data rates are supported.On the other hand, curve 214 is corresponding to the higher data rate that uses than reality, and will need more power.As shown in drawings, this curve has exceeded maximal power level 230 fully, therefore will not be supported.

In version 99, the millisecond frame is used to transmit data.Version 99 standard codes, travelling carriage will be checked the power of the transfer of data during preceding 20 milliseconds, and based on this information, travelling carriage will determine whether to support each possible data rate (TFC).In the example of accompanying drawing 2, obtained support corresponding to the data rate of curve 211-213, and be not supported corresponding to the data rate of curve 214.Then, travelling carriage will be selected the highest data rate that is supported (being 211 in this example), and, if the data rate of selecting is less than or equal to the maximum data rate of stipulating in the permission that comes from the base station, this highest data rate that is supported will be used for transmitting in next ten milliseconds of image durations data (shown in curve 240).If the highest data rate that is supported is greater than the maximum data rate of regulation in the permission, travelling carriage will be selected the highest data rate that is supported that is less than or equal to maximum data rate of regulation in the permission.

Be used to select travelling carriage concisely direct, and be suitable in version 99, realizing, because have only the dedicated channel of independent transmission data to the scheme of the data rate of base station transmits data.This is to need unique channel of considering in determining to transmit the rate process of data.Yet, in latest edition (version 6) designed system, defined enhanced uplink according to this standard.Enhanced uplink comprises additional reverse chain channel, and data can be from travelling carriage to base station transmits on this channel.For travelling carriage can be remained within the power constraint of travelling carriage simultaneously at this additional channel transmitting data, need when selecting data rate, additional channel be taken into account.

If manage the additional channel of enhanced uplink in the mode identical, can use and the similar scheme of the scheme of above-mentioned selection message data rate with the dedicated data channel of version 99 up links.That is, can suppose channel status will with the recent history of travelling carriage in identical, and based on the historical record of channel status for the data allocations power that is transmitted.Yet the channel of enhanced uplink is not to use in the mode identical with the channel of version 99 up links.3 in these differences some are made an explanation with reference to the accompanying drawings.

With reference to accompanying drawing 3, the figure shows the sequential chart of the transmission on the channel of enhanced uplink.Reference numeral 300 is illustrated in the transfer of data of carrying out to the base station from travelling carriage on the enhanced uplink, and Reference numeral 310 expressions are by down link transmission to travelling carriage from the base station.

In this embodiment, enhanced uplink channel comprises enhanced data channel (E-DCH), rate indicator channel (RICH), request channel (REQCH) and secondary pilot channel (SPICH).Can see that from this accompanying drawing in one embodiment, enhanced uplink channel has been used two milliseconds of subframes, rather than employed ten milliseconds of frames of version 99 data channels.Each two milliseconds of subframe has three periods, has 15 periods in every frame.Enhanced data channel can be transmitted by HARQ (the mixing automatic repeat requests) process in each two milliseconds of subframe.Can come the transmission rate pointer information corresponding in the HARQ process each.If request by the travelling carriage transmission, then should be passed through the request Channel Transmission during request first two milliseconds of subframes in ten milliseconds of frames.

Enhanced uplink has been realized mixed automatic repeat request mechanism, or HARQ mechanism.This mechanism is used for repeating to transmit those automatically by travelling carriage and does not obtain the data that the base station is confirmed.The transfer sequence of Frame comprises the HARQ process.Like this, in the HARQ process, when the data channel that uses enhanced uplink from travelling carriage during to the base station transmits data, the base station receives this data, decoded data is then to travelling carriage acknowledge (ACK).When travelling carriage received the confirmation, it knew that data that it is transferred to the base station are successfully received and decode.In this case, travelling carriage is handled the data (being the HARQ procedure termination) that are over and transmitted.

On the other hand, if the base station has received data, but these data of successfully not decoding, non-affirmation (NAK) will be transmitted to travelling carriage in the base station.When travelling carriage received non-affirmation, it knew that data are not successfully received and decode.Therefore, travelling carriage must transmit these data (promptly proceeding the HARQ process) again.Also do not receive non-affirmation if travelling carriage has both received the confirmation, travelling carriage carries out same processing.In one embodiment, travelling carriage will attempt retransmitting this data predetermined times.If transmission not success still will be given up data after predetermined time re-transmission, stop the HARQ process.

Make selection in the suitable data speed of the enterprising line data of the enhanced uplink transmission complicated factors that becomes have several.Such factor is that the existence of each enhanced uplink channel or do not exist is at random.In other words, each channel in these channels all may use in given frame, also may not use in given frame.For example, in next frame by the request channel to the base station transmits request may be necessary also may be unnecessary.

In addition, Xiang Guan complicated factor is the realization of HARQ mechanism.As noted above, this mechanism provides automatic re-transmission to not confirmed as the data that are successfully received and decode by the base station.This is at random, because the successful reception of data can not be confirmed immediately.From travelling carriage to base station transmits corresponding data, these data of decoding, specified data is successfully received and decode and affirmation is transferred back to travelling carriage needs the time.This delay is expressed out in accompanying drawing 3.

As shown in Figure 3, in first two milliseconds of periods of frame f, travelling carriage transmitting HARQ process 0.Greatly about

The individual period (seven milliseconds) receives the affirmation of HARQ process 0 afterwards.Like this, under the situation of HARQ process 0, in the scope of frame f, receive this affirmation.Therefore, travelling carriage is known the data that whether will need to retransmit HARQ process 0 when boundary between frame f and f+1 is selected data rate.This is not a problem.Problem relates to the affirmation of HARQ process 1-4.The affirmation of any one process in these HARQ processes all can not be received within same frame.Therefore, when the boundary between frame f and f+1 is selected data rate, do not know whether among the HARQ process 1-4 any one is successfully received by the base station.Therefore, travelling carriage does not know whether need to retransmit corresponding data.Travelling carriage can only guess whether these data need transmission, and need distribute how much power for these transmission.

On the border of every frame, travelling carriage only knows whether will transmit with lower channel in frame subsequently: the SPICH of E-DPDCH, RICH and HARQ process 0; If during the 3-14 period of frame f, do not transmit REQCH and E-DPDCH, then during the corresponding period of frame (f+1), will not transmit E-DPDCH, RICH and SPICH; If during the 3-14 period of frame f, transmitted REQCH, then can during the corresponding period of frame (f+1), transmit E-DPDCH, RICH and SPICH; And if transmitted E-DPDCH during the 3-14 period of frame f, and this transmission is not last, then can retransmit E-DPDCH, RICH and SPICH during the corresponding period of frame (f+1).

Because travelling carriage does not know whether will transmit any other data on enhanced uplink, so can not directly use the simple data rate selection scheme that is used for version 99 up links.Yet,, can use this scheme if carried out the supposition of enhanced uplink transmissions.For example, can suppose in next frame on enhanced uplink channel, will not have transfer of data.The problem that this supposition exists is that travelling carriage may not carry out the data necessary transmission on enhanced uplink.On the contrary, can suppose and in every frame, carried out whole possible enhanced uplink transmissions.The problem that this supposition exists is, enhanced uplink channel is always unessential, so some enhanced uplink bandwidth are not used, and version 99 uplink channels may not have enough bandwidth.Therefore, seem that between the supposition between these two kinds of egregious cases will be the most rational.

An embodiment has realized considering the scheme of the randomness that HARQ retransmits.For the tcp data segment of the unknown, this scheme is to estimating the data volume that is transmitted.Similar with version 99 schemes, estimate to be based on historical information, but historical information does not relate to channel status.On the contrary, historical information relates to the HARQ re-transmission of data.

Propose as top, the data of specific HARQ process from travelling carriage to base station transmits, and, if transmission do not obtain confirming, then retransmit these data.In this embodiment, follow the tracks of retransmitting, to identify that each HARQ process is with the probability that is retransmitted.More specifically, follow the tracks of long-term remaining packet error probability (BLER).For each transmission (or retransmit), exist data in the next frame will need the corresponding probability that is transmitted once more.

For example, only transmitted HARQ process once for each, the probability that must be transmitted once more may be 90%.For the HARQ process of having transmitted twice, the probability of re-transmission may be 50%.Each the number of transmissions subsequently has relevant transmission probability in next frame.In general, the number of attempt of HARQ process transmission is many more, and the probability that need transmit this process in next frame once more will be low more.As mentioned above, the number of times of transmission is limited, so after transmitting the last time, the probability that transmits these data in next frame once more will be 0.

Travelling carriage uses this probabilistic information to determine whether each unacknowledged HARQ process is retransmitted needs.For each process in these processes, travelling carriage is determined the number of times that this process has been transmitted, and determines the probability relevant with this number of transmissions, and based on this probability assignments of being correlated with or do not distribute the through-put power of this process.

Like this, for example, suppose that the re-transmission of each HARQ process will be attempted four times at most.The probability that further these processes of supposition need be transmitted in next frame is as shown in the table.

The number of times that process has been transmitted	The probability that process must be transmitted in next frame
		0	100％

1	90％
		2	50％
3	15％
		4	0％

If the data of specific HARQ process also are not transferred to the base station from travelling carriage, the probability that this process need be transmitted in next frame is 100%.Therefore, travelling carriage is the transmission distribution power of this process.On the other hand, if the HARQ process of being considered has been transmitted once, the probability that this process will need to be transmitted once more in next frame has only 90%.Therefore, travelling carriage will be the transmission distribution power of this process with 90% probability.If the data corresponding with this process have been transmitted four times, will can be for not transmitting this data allocations power once more.

With specific probability assignments power and do not mean that travelling carriage will only distribute transmission this process required part energy.On the contrary, travelling carriage will distribute the required whole power of transmission, perhaps not distribute required power fully.For example, when the probability that will need to retransmit when data is 90%, the time of travelling carriage 90% will be distributed power, and 10% time will not distributed power.In one embodiment, this is by generating the random number between 0 and 1, if the random number of Sheng Chenging be this course allocation power just between 0 and 0.9 then, if perhaps the random number of Sheng Chenging does not just realize for this course allocation power between 0.9 and 1.

Because, in the above-described embodiment, travelling carriage is at enhanced uplink channel and version 99 uplink channel transmitting datas, and the power allocation scheme of enhanced uplink is that the revision with version 99 data rate selection schemes combines and uses.The scheme that obtains is shown in Figure 4.

With reference to accompanying drawing 4, this illustrates is flow chart according to the method for an embodiment.In this embodiment, travelling carriage is at first determined the highest data rate that is supported (module 410).Then, travelling carriage determines to transmit the amount (module 420) of the required power of unsettled HARQ process on enhanced uplink.Then, travelling carriage is " minimal set " stores power of the channel on version 99 up links, be the unsettled HARQ process stores power of in module 420, determining, determine the peak data rate (module 430) that after for the unsettled HARQ process stores power on the enhanced uplink, can also be supported then.

The highest definite data rate that is supported is carried out in a conventional manner in module 410.In other words, check about the information of previous ten milliseconds of frames and the highest supported data rate of specified data channel.This is identical with scheme used in version 99.In order to determine the highest supported data rate, ignore enhanced uplink channel.This is identical with scheme used in version 99, so this embodiment and the same back compatible of system based on version 99.

In version 99, when no matter when travelling carriage had the data that will transmit in up link, travelling carriage was all selected TFC from its current TFCS.The selection of TFC is based on data in the buffer memory of travelling carriage, current available through-put power, available TFCS and the performance of travelling carriage.

Each TFC among the available TFCS is in one of three kinds of states: be supported; Power exceeds the quata; Perhaps get clogged.The TFC that is in the state of being supported can be used in the transfer of data in the up link.Being in the exceed the quata TFC of state of power will need than maximum permission power more power, and thereby will can not be selected for transfer of data in the up link.The TFC that is in the state of getting clogged needs too much power equally, and will can not be selected for ul transmissions.

Based on some parameter, according to can be supported, power exceeds the quata or the TFC that gets clogged between the state and to move, travelling carriage is estimated deletion, recovery and obstruction standard constantly.If preceding once assessment the time hop count certain part at least, the travelling carriage through-put power of the estimation that TFC is required is greater than the travelling carriage transmitter power of maximum, then travelling carriage is considered the deletion standard to this TFC.Travelling carriage is considered as being in the power state that exceeds the quata with this TFC.Exceed the quata a state period if TFC is in power, travelling carriage is considered the obstruction standard to this TFC.If some period after preceding once estimation, the travelling carriage through-put power of the estimation that TFC is required surpasses maximum travelling carriage transmitter power, and then travelling carriage is considered the recovery standard to this TFC.Travelling carriage is considered as this TFC to be in the state that is supported.

In module 420, travelling carriage is determined the power demand of enhanced uplink.This comprises determines that travelling carriage knows the power demand (for example, the re-transmission of unsettled HARQ process 0) of the data that will be transmitted, and the power demand (for example, the re-transmission of unsettled HARQ process 1-4) of determining to be transmitted the data that also may not be transmitted.The power demand of Que Dinging is the average power requirement on the frame in this embodiment, rather than peak power.

Calculate the amount of the power that uses in the expection of enhanced uplink transmitting data with the following methods.At first, define several variablees.

The f=frame number

Hop count during m=

＝15·f+s

0≤s≤14

H=HARQ process number

Further define several functions.

P _s(k; F)=DPCCH through-put power during the period k of frame f,

Wherein DPCCH is the Dedicated Physical Control Channel of version 99 up links

$=\frac{1}{15}\·\underset{k=0}{\overset{14}{\mathrm{\Σ}}}{P}_s(k;f)$

$=\frac{1}{F}\·\underset{k=0}{\overset{F-1}{\mathrm{\Σ}}}P(f-k)$

During frame f, travelling carriage or transmission request or transmission E-DPDCH (Dedicated Physical Data Channel of enhanced uplink) or the two have.Transmission during the frame (f+1) on this basis.

We define several supplementary variables then.

0≤φ≤1

R (j; F)=the requested E-DPDCH TF of HARQ process j during frame f

χ (j; F)=the E-DPDCH TF of HARQ process j during frame f

In order to calculate the estimated value in frame average requested through-put power (f+1) image duration, we have:

P (l)=remaining E-DPDCH BLER after l transmission

1≤l≤N _max-1

N _MaxThe maximum transmission times of=permission

N _e(j; F)=frame f during the E-DPDCH the number of transmissions of HARQ process j

We further define amplitude scale factors:

β _{D, i}The scale factor of=DPDCH TFC i

β _{E, i}The scale factor of=E-DPDCH TF i

β _cThe scale factor of=DPCCH

β _{θ, i}The scale factor of the RICH+SPICH of=E-DPDCH TF i

Request and the probability-weighted that retransmits can be write:

$q(j:f)=\frac{p\left(N_e(j:f)\right)}{\underset{j=0}{\overset{H-1}{\mathrm{\Σ}}}p\left(N_e(j:f)\right)+\mathrm{\φ}}$

$\mathrm{\ξ}=\frac{\mathrm{\φ}}{\underset{j=0}{\overset{H-1}{\mathrm{\Σ}}}p\left(N_e(j;f)\right)+\mathrm{\φ}}$

In order to calculate requested maximum rate, definition:

$S_r\left(f\right)=\{j:I_r(j;f)\·(1-I_r(j;f))>0\∀0\≤j\≤H-1\}$

$j_m=\underset{r(j,f)}{\arg \max }({{\mathrm{\β}}^2}_{e,r(j,f)}+{{\mathrm{\β}}^2}_{\mathrm{\θ},r(j,f)})\∀j\∈S_i\left(f\right)$

The required expectation through-put power of frame (f+1) can be written as:

$P_e(f+1;f)=\mathrm{\ξ}\·\left(\frac{{\mathrm{\β}}_{e,l_m}^2+{\mathrm{\β}}_{\mathrm{\θ},l_m}^2}{{\mathrm{\β}}_c^2}\right)+\underset{j=0}{\overset{H-1}{\mathrm{\Σ}}}{I}_l(j;f)\·q(j;f)\·\left(\frac{{\mathrm{\β}}_{e,\mathrm{\χ}(l;f)}^2+{\mathrm{\β}}_{\mathrm{\θ},\mathrm{\χ}(j;f)}^2}{{\mathrm{\β}}_c^2}\right)$

P _est(f+1；f)＝P _as(f)·[1+P _e(f+1；f)]

As mentioned above, this be during frame (f+1) with the average transmission power of needs, rather than peak power.

Also can calculate the peak transmission power that to need and the stores power of enhanced uplink channel with probability method.In this case, travelling carriage will be at first based on unsettled re-transmission and rate request, calculates the possible power that can need in next frame.Then, for every kind of possibility, travelling carriage will determine whether the corresponding power of needs according to probability.Then, travelling carriage need to select the probability of maximum power from whole candidate's probability.The travelling carriage supposition will need this maximum power all the time in next frame, and will carry out TFC according to the method for version 99 and select.

In module 430, travelling carriage is " minimal set " stores power of the channel on version 99 up links.This up link can be transmitted data of different types, and the some of them data have high priority and some data have low priority.The data that priority is high for example, can comprise speech data, Streaming Media or other data to delay-sensitive.The data that priority is low can comprise various types of to the insensitive data of transmission delay." minimal set " comprises the high-priority data that need transmit without delay.Therefore, be the minimal set stores power among this embodiment.Then, as mentioned above, also be the transfer of data stores power of the expection on enhanced uplink.

After being the enhanced uplink transmissions stores power, based on the power limit of travelling carriage, deduct the power that stores into enhanced uplink channel, recomputate the highest data rate that is supported of version 99 up links.Then this data rate is used for version 99 ul transmissions.Data rate used when retransmitting the employed data rate of HARQ process on the enhanced uplink with this process of initial transmission is identical.This is necessary, because the data that are retransmitted of HARQ process must be identical with the data of initial transmission.

It is as follows that the recomputating of the highest data that are supported carried out.In case travelling carriage calculates the average transmission power of enhanced uplink channel, need DPDCH TFC be deleted from SUPPORTED_STATE (being supported state) according to priority rule.

We define:

g _d(i)=priority of DPDCH TFC i

S _d(f)=be in the DPDCH TFC set of the state of being supported at frame f end

g _e(i)=priority of E-DPDCH TF i

S _e＝E-DPDCH TFS

If it is DPDCH has limit priority always, just no problem, as follows.

$S_{d,0}\left(f\right)=\{i:g_d\left(i\right)<g_e\left(j\right)\&ForAll;i\&Element;S_d\left(f\right),j\&Element;S_e\}$

S ^c _d，0(f)＝S _d(f)-S _d，0(f)

=S _{D, 0}(f) supplementary set

Definition:

${\mathrm{\&beta;}}_{d,m}=\underset{i}{\max }\{{\mathrm{\&beta;}}_{d,i}\&ForAll;i\&Element;S_{d,0}^c\left(f\right)\}$

Expectation available horsepower with DPDCH TFC of the priority lower than E-DCH is:

$P_{d,a}(f+1;f)=\max \{p_{\max }-P_{\mathrm{av}}\left(f\right)\&CenterDot;[1+{\left(\frac{{\mathrm{\&beta;}}_{d,m}}{{\mathrm{\&beta;}}_c}\right)}^2+P_e(f+1;f)],0\}$

Therefore, we have:

${\mathrm{\&Psi;}}_d(f+1)=S_{d,0}^c\left(f\right)\&cup;\{i:{\mathrm{\&beta;}}_{d,i}<\sqrt{\frac{P_{d,a}(f+1,f)}{P_{\mathrm{av}}\left(f\right)}}\&CenterDot;{\mathrm{\&beta;}}_c\&ForAll;i\&Element;S_{d,0}\left(f\right)\}$

Then, travelling carriage is selected DPDCHTFC from Candidate Set as implied above.

As mentioned above, although aforesaid description concentrates on the embodiment that realizes in the wireless communication system according to 3GPP standard (particularly version 99 and version 6) design, also can in the system that does not satisfy these standards, realize other embodiment.Alternate embodiments of the present invention also can be different from above description with various alternate manners.

For example, in one embodiment, before the power demand of estimating enhanced uplink channel, needn't be elementary (for example version 99) up link stores power.A kind of method according to this embodiment will comprise the power demand of estimating the unsettled HARQ process on the enhanced uplink, power for unsettled HARQ process storage estimate amount, determine after the peak data rate that is supported on the primary uplink then for the unsettled HARQ process stores power on the enhanced uplink.

Although do not go through above, should be noted that also travelling carriage or other wireless transceiver can realize by suitable procedure is provided in programmable device.The structure of transceiver typically comprises one or more processors, and processor is realized the function of equipment (selecting as the probability following rate) by carrying out corresponding program command.These program command typically are embodied in the storage medium that can be read by one or more processors.Be used to realize that this storage medium that includes program command of above-mentioned functions is an alternate embodiments of the present invention.

Those of skill in the art in this area will be understood that, can represent information and signal with in various technology and the technology any.For example, at data, instruction, order, information, signal, bit, symbol and the chip that above description may be mentioned, can represent with voltage, electric current, electromagnetic wave, magnetic field or particle, light field or particle or its combination in any body.

Those of skill in the art will be further understood that various illustrative logical block, module, circuit and the algorithm steps described in conjunction with embodiment disclosed herein can be implemented as electronic hardware, computer software or the assembly of the two.For this interchangeability of hardware and software clearly is described, above various illustrative assemblies, program block, module, circuit and step are described according to their function.This function is to depend on application-specific and the design constraint that whole system is subjected to what hardware or software were realized.Those of skill in the art can realize the described function of each application-specific with diverse ways, but this application decision-making should not be understood that to cause having departed from scope of the present invention.

Various illustrative logical block, module and the circuit described in conjunction with embodiment disclosed herein, their the combination in any body that can be designed to the described function of execution contexts with general processor, digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete nextport hardware component NextPort or its is realized or is carried out.General processor can be a microprocessor, but alternately, processor can be traditional processor, controller, microcontroller or state machine.Processor also can be implemented as the combination of computing equipment, and for example, DSP and microprocessor, a plurality of microprocessor, one or more microprocessor are in conjunction with the DSP core or the assembly of other this structure arbitrarily.

Can exchange in conjunction with the method for embodiment description disclosed herein and/or one or more steps of algorithm, and not depart from scope of the present invention.The method of describing in conjunction with embodiment disclosed herein or the step of algorithm can be directly in hardware, by implementing in the software module of processor execution or in the assembly of the two.Software module can be arranged in RAM memory, flash memory, ROM memory, eprom memory, eeprom memory, register, hard disk, removable dish, CD-ROM or other any type of storage medium well known in the art.Exemplary storage medium can be connected to processor, make that processor can be from read information and writing information.Alternately, storage medium can be integrated into processor.Processor and storage medium can be arranged in ASIC.ASIC can be arranged in user terminal.Alternately, processor and storage medium can be used as the discrete assembly in the user terminal.

The above description of disclosed embodiment is used to make any those of skill in the art in this area can make or use the present invention.Difference to these embodiment is revised, and is conspicuous for those skilled in the art, and the general principle of this paper definition can be applied to other embodiment, and does not break away from the spirit and scope of the present invention.Like this, the present invention is not limited to the shown embodiment of this paper, but consistent with principle disclosed herein and novel features the wideest corresponding to scope.

Claims (16)

1. confirmed or a kind of method in finishing the wireless communication system that the most repeatedly retransmits that up to data described method comprises being configured to retransmit unsettled data:

Determine the probable value relevant with the number of attempt of transfer of data; With

For in a plurality of unsettled transfer of data each,

Determine to have attempted on the secondary channels in one or more frames formerly the number of times of described transfer of data,

Determine the probability relevant with the described number of times of the described transfer of data of having attempted and

Based on the described probability relevant, for the described transfer of data on the secondary channels described in the frame is subsequently distributed power with the described number of times of the described transfer of data of having attempted.

2. the method for claim 1 further is included as the transfer of data distribution power on the primary channel.

3. method as claimed in claim 2 is being before described transfer of data on the described secondary channels in the described frame is subsequently distributed power, for the transfer of data on the described primary channel is distributed described power wherein.

4. the method for claim 1 wherein is that the described power that the transfer of data on the described primary channel is distributed is assigned to MDS minimum data set.

5. method as claimed in claim 2 further comprises the data rate that is chosen in the transfer of data on the described primary channel.

6. method as claimed in claim 5, the data rate that wherein is chosen in the transfer of data on the described primary channel comprises the highest data rate that is supported of selecting to be not more than the maximum data rate of stipulating the base station.

7. method as claimed in claim 6, further comprise based on corresponding to one group formerly the information of frame determine that in a plurality of data rates which is supported.

8. method as claimed in claim 6, wherein select the described data rate of the transfer of data on the described primary channel to comprise and select data rate and the power that described secondary channels do not distributed is not adjusted and deduct the described data rate that the described power of distributing to described secondary channels recomputates the transfer of data on the described primary channel based on described maximal power level then based on maximal power level.

9. radio communication device comprises:

Be configured to be undertaken the transceiver of data communication by wireless communication link;

Wherein said transceiver configuration becomes to retransmit unsettled data on secondary channels, be identified or up to the re-transmission of finishing maximum times up to described data, and wherein said transceiver further is configured to

Determine to attempt the relevant probable value of transfer of data with one or many; With

For in a plurality of unsettled transfer of data each,

Determine the number of times of the described transfer of data of in one or more frames formerly, having attempted,

Determine the probability relevant with the described number of times of attempting described transfer of data and

Based on the described probability relevant, for the described transfer of data in the frame is subsequently distributed power with the described number of times of attempting described transfer of data.

10. the transfer of data that radio communication device as claimed in claim 9, wherein said transceiver further are configured as on the primary channel is distributed power.

11. the described transfer of data that radio communication device as claimed in claim 10, wherein said transceiver further are configured as on the described secondary channels in the described frame is subsequently distributed before the power, for the transfer of data on the described primary channel is distributed described power.

12. radio communication device as claimed in claim 11, wherein said transceiver further are configured to give MDS minimum data set with the described power division of distributing to the transfer of data on the described primary channel.

13. radio communication device as claimed in claim 10, wherein said transceiver further is configured to select the data rate of the transfer of data on the described primary channel.

14. radio communication device as claimed in claim 13, wherein said transceiver configuration become by selecting to be not more than the highest data rate that is supported of the maximum data rate of stipulating the base station, select the described data rate of the transfer of data on the described primary channel.

15. radio communication device as claimed in claim 14, wherein said transceiver further are configured to based on determining that corresponding to the information of frame formerly in a plurality of data rates which is supported.

16. radio communication device as claimed in claim 14, wherein said transceiver further is configured to not adjust by selecting data rate based on maximal power level the power division of described secondary channels, deduct the described data rate that the described power of distributing to described secondary channels recomputates the transfer of data on the described primary channel based on maximal power level then, select the described data rate of the transfer of data on the described primary channel.

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