The application is the applying date for September in 2007 26 days, Application No. 200780037073.6, entitled " is used forThe Chinese patent Shen of combined type open/close (being based on CQI) the up-link transmission power control of E-UTRA interference mitigation "Divisional application please.
Embodiment
The term " wireless transmitter/receiver unit (WTRU) " hereafter quoted includes but is not limited to user equipment (UE), shiftingDynamic station, fixed or moving user unit, pager, cell phone, personal digital assistant (PDA), computer or other are anyThe user equipment that can be worked in wireless environments.The term " evolved node B (e node B) " hereafter quoted includes but not limited toIn base station, node B, cell, site controller, access point (AP) or other any interfaces that can be worked in wireless environmentsEquipment.
The radio communication system including at least one WTRU 105 and at least one service e node B 110 is shown in Fig. 1System 100.The WTRU 105 includes receiver 115, emitter 120, processor 125 and at least one antenna 130.Service eNode B 110 includes emitter 135, receiver 140, processor 145, mapping table 150 and at least one antenna 155.WTRU105 and e nodes B 110 is to control to believe via downlink (DL) control channel 160, UL shared datas channel 165 and ULRoad 170 communicates.
Processor 145 in e nodes B 110 performs UL interference thermal noises according to the signal received by receiver 140(IoT) measure, and the IoT measurement results measured are compared with predetermined threshold.Processor 145 can also generate interference loadDesignator, the designator then can by e nodes B 110 emitter 135 it is rule-based or triggering mode broadcasted.This is doneThat disturbs load designator instruction is whether the IoT measurements performed on e nodes B 110 exceed predetermined threshold.When in WTRU 105Receiver 115 when receiving and having decoded the interference load designator, the processor 125 in WTRU 105 can determine that e is savedThe state of IoT at point B 110, the state can be used for mitigating the inter-cell interference in e nodes B 110.
When WTRU 105 is located at specific cell, it can hold according to systematic parameter and path loss measurement result to performRing TPC.WTRU 105 mitigates the inter-cell interference in e nodes B 110 according to interference load designator, wherein the e nodesB 110 is in adjacent and compared with other neighbor cells among most strong cell with the specific cell.The most strong cellRefer to that WTRU 105 has the cell of highest path gain (namely lowest path loss) to it.Then, to being possible to becauseOpen loop error and for the transmission power that is biased, WTRU 105 according to the CQI received via DL control channels 160 andTarget SINR come correct its based on open loop calculate transmission power, so as to compensate open loop error.
It should be noted that CQI refers to that e nodes B 110 is controlled to believe with signal via the DL for UL link circuit self-adaptingsRoad 160 and to WTRU 105 notice UL License Infos (or MCS).What CQI was represented is that service e nodes B 110 controls to believe in DLThe UL channel qualities specific to WTRU fed back in road 160 to WTRU 105.In E-UTRA, CQI is with UL License InfosWhat form was provided.Target SINR is specific for WTRU parameter, and the parameter is determined by e nodes B 110, and is by higherLayer signaling and be signaled to WTRU's 105.
The transmission power P of WTRU 105 for UL shared datas channel 165TxIt is the emitter 135 according to e nodes B 110The DL reference signals 175 launched and determined in initial transmission phase.DL reference signals 175 have known transmitting work(Rate, and WTRU 105 is to carry out execution route loss measurement using the transmission power.For the TPC of Intra-cell, WTRU105 Initial Trans PTxDefine according to open loop TPC and as follows：
PTx=max (min (SINRT+PL+IN0+K,Pmax),Pmin) equation (1A)
Wherein SINRTIt is the echo signal interference-to-noise ratio (SINR) at service e nodes B 110 in units of dB, andAnd PL is path loss (the namely one set point ginseng from service e nodes B 110 to WTRU 105 and in units of dBNumber), among these including shadow fading.WTRU 105 is then lost according to DL reference signals 175 come measuring route, wherein the signalTransmission power via DL signalings be known on WTRU 105.Value IN0Be service e nodes B 110 at using dBm asThe UL interference of unit and noise power.K is to may deviate from actual transmission work(in practice account for DL reference signals 175It is used for the power control margin for servicing e nodes B 110 in the case of rate.PmaxAnd PminBe respectively in units of dBm forThe minimum and maximum transmitted power level for the transmission that WTRU 105 is carried out on UL shared datas channel 165.
Assuming that the target SINR for WTRU 105 (or WTRU subgroup) is can be according to service e nodes B 110Some measure to adjust.And outer shroud TPC schemes then can be used for target SINR regulations.Generally, target SINR is to be based on ULWhat the target link quality (such as BLER(block error rate) (BLER)) of shared data channel 165 was determined.In addition, different multipath fadingsChannel status usually requires the different target SINR (such as BLER) for specifying target link quality.Correspondingly, this is measuredIncluding the target link quality (and being likely to be fading channel quality) for WTRU 105.
For UL multiple-input and multiple-outputs (MIMO), needed in view of different MIMO modes for given link qualityIn the case of the different capacity or SINR of (such as BLER), target SINR additionally depends on selected MIMO mode.In such caseUnder, WTRU 105 can include multiple antennas 130.
As replacement, WTRU 105 transmission power can be defined as containing minizone TPC, as follows：
PTx=max (min (SINRT+PL+IN0+K+Δ(IoTS),Pmax),Pmin) equation (1B) its intermediate value Δ(IoTS) UL load control step-lengths are represented, the step-length is the UL interference load designators (IoT of most strong (S) neighbor cellS)IoTSFunction.
Δ(IoTS) integer value is chosen, it is as follows：
Wherein δ is reservation system parameter, such as δ=- 1 or -2dB.By using Δ (IoTS), it can mitigate adjacent smallInter-cell interference in area.Interference due to bringing other cells positioned at the WTRU of center of housing estate is less than those and is in cell sideSegmentation in the WTRU of edge, therefore load control step-length considers as follows：
Wherein x is the inter-cell load control factor of segmentation.
Most strong neighbor cell be based on from single neighbor cell to WTRU 105 path loss measure and in WTRU 105Upper determination, wherein the most strong neighbor cell be in the cell adjacent with the current cell for providing service for WTRU 105 withWTRU 105 has the neighbor cell of lowest path loss.
By introducing Δ (IoTS), inter-cell interference (such as minizone TPC) can be mitigated, most strong neighbor cell is comeSay then especially true.For the TPC of minizone, e nodes B will measure UL interference (with rule or periodic form), then thenIt can determine whether whether the interference level measured exceeds predetermined threshold.The state of the UL interference finally given is to use IoTS(namelyLoad designator) and from e nodes B 110 broadcast (with rule or periodic form).For example, it is somebody's turn to do if interference exceedsThreshold value, then IoTSIt is arranged to 1, so, is done because e nodes B 110 can suffer from excessive minizone in ULDisturb, therefore, its transmission power is reduced a certain amount of by the WTRU that e nodes B 110 will be in order neighbor cell.Otherwise, IoTSWill0 is configured to, thus e nodes B 110 will receive current UL interference levels, and so, the WTRU in neighbor cell is not required toReduce its transmission power.WTRU 105 is then decoded to the load designator for being received from most strong neighbor cell, then then canFollow the order (IoTS).If by IoTSIt is decoded as 1, then WTRU 105 transmission power reduces Δ (IoTS), that is,Say, Δ (IoTS)<0dB.If by IoTSIt is decoded as 0, then Δ (IoTS)=0dB.
Assuming that each cell all periodic broadcast UL interference loads bit (with High Speed Uplink Packet access(HSUPA) relative grant in is similar), thus WTRU 105 can decode the instruction from selected most strong neighbor cellAccord with bit.The WTRU 105 can according to serving cell between most strong neighbor cell path loss ratio judge at itIn cell edge or Intra-cell.As replacement, the inter-cell load control factor x of segmentation can be defined as below：
After initial transmission phase, WTRU 105 is being powered (similar with RACH (RACH) processing therebetweenLike) or set up after session connection and immediately begin to implement its TPC, WTRU transmission power is calculated as below：
Ptx=max (min (SINRT+PL+IN0+K+α·f(CQI,SINRT),Pmax),Pmin) equation (5)
Wherein f (CQI, SINRT) it is closed loop correction factor (such as UL based on UL CQI and corresponding target SINRLicense Info or MCS information).Weighting factor α can come true according to channel status and CQI availabilities (or UL transmission pause)It is fixed, wherein 0≤α≤1.For example, if as lacking the UL data transfers of scheduling without can be from e nodes B 110The UL CQI arrived (UL permits or MCS information), then weighting factor α will be arranged to 0.Otherwise, weighting factor α will be setFor 1.Although weighting factor α for simplicity, has been arranged into 0 or 1 herein, replaces embodiment and further comprisesWith channel status and the adaptable adaptive α values of UL/DL channel configurations.
Correction factor f (CQI, SINRT) open loop TPC related errors are used to compensate for, among these including being mainly due to ULWith the emitter of the path loss measurement error of imperfect reciprocities of the DL in FDD (FDD), and WTRU 105Due to being damaged caused by non-linear power amplification in 120.In addition to the path loss as set point parameter, e nodes B110 can also promote correction factor to adjust TPC relevant system parameters, such as SINR, IN0And K, these parameters are equallyIt is set point parameter.For example, be necessarily specified WTRU 105 regulation target SINR in e nodes B 110, and then allow WTRU105 understand the regulation when, e nodes B 110 can for WTRU 105 accordingly regulation CQI (UL licenses), rather than directly use believeNumber target SINR is advertised to WTRU 105.The SINR received at e nodes B 110, the school are represented in view of UL CQIPositive factor is to be calculated by WTRU 105 according to UL CQI (UL permits or MCS information) feedback from service e nodes B 110's.For example,
f(CQI,SINTT)=SINRT-E{SINRest(CQI) } (dB) equation (6) wherein SINRest(CQI) representIt is the SINR estimations that e Node-B receivers are arrived, the estimation is then that WTRU 105 is derived by from UL CQI feedbacks.E{SINRest(CQI) what is } represented is the estimation SINR average values relative to the time, thus：
E{SINRest(CQIk)=ρ E { SINRest(CQIk-1)}+(1-ρ)·E{SINRest(CQIk) equation (7)
Wherein CQIkThe CQI received for k-th that is represented, ρ are then averaging filter coefficients, and 0≤ρ≤1.
To difference as described above between target SINR and estimation SINR (being derived by from the CQI reported) toFor the correction factor gone out, what the correction factor was typically represented is the open loop TPC related errors for needing to compensate.
For the e node B signalings of the TPC schemes proposed
Target SINR level SINRTIt is a parameter specific to WTRU (or WTRU subgroups), as from e nodes BThe function (such as path loss) and/or such as BLER etc specified quality requirement of 110 to WTRU 105 distance, the ginsengNumber can be advertised to WTRU 105 with signal by e nodes B 110.Generally, e nodes B 110 is come by mesh using mapping table 150Mark quality (such as BLER) is mapped to target sinr values.How to generate this mapping table is then e nodes B (or carrier operationsBusiness) proprietary scheme.Target SINR can be conditioned by outer loop mechanism.Target SINR signaling is borrowed when it is adjustedThe L1/2 control signalings that help in band are completed.
Power control margin K is primarily used for DL reference signals and specific to e nodes B parameter, and the parameter can be byE nodes B 110 is advertised to WTRU 105 with signal.For example, because DL reference signals 175 are passed with constant emission power levelSend, and the level can be understood by higher level signaling on WTRU, therefore, DL reference signals 175 can be used for WTRU105 path loss measurement.But, the actual emission power of DL reference signals 175 is possible to the proprietary side because e nodes BCase and different from the performance number noticed with signal.In this case, power excursion will be between actual use transmission powerWith between the transmission power noticed by broadcast channel (BCH) in semi-static mode.For K, it is likely to be half quietState, and be advertised by broadcast channel (BCH).The information is then used for its UL/DL path loss by WTRU 105Calculate.It should be noted that although it is assumed that power control margin K is individually noticed together with other specification with signal, stillIt can also be embedded in target SINR i.e. SINRTIn, thus：
SINRT(after insertion)=SINRT+ K (dB) equation (8)
In this case, K is It is not necessary to be advertised to WTRU 105 with dominant signal.
To total UL interference and noise level IN0For, it is averaged in all (or wireless in the subcarrier usedElectricity carrying (RB)) or the subset of subcarrier on, the level can be advertised to WTRU 105 with signal by e nodes B 110.ThisIndividual level is (and can be noticed by BCH) for being measured/being derived by by e nodes B 110.The renewal rate of the signalingIt is generally relatively low.And e nodes B 110 is then proprietary schemes of e nodes B using such as noise estimation techniques etc and to adviseThen mode measure/estimate IN0's.
To minimum and maximum UL transmitted power levels PmaxAnd PminFor, these level can be by the letters of e nodes B 110Number it is advertised to WTRU 105.In addition, these level both can be the parameter according to WTRU abilities, can also be by e nodes B 110Clearly noticed with signal.
UL CQI (such as UL License Infos or MCS information) are for UL link circuit self-adaptings (such as Adaptive Modulation and Coding(MCS)) and initially noticed with signal (its maximum signaling rate be each TTI once, such as 1000Hz), and the ULCQI can be advertised to WTRU 105 with signal by e nodes B 110.
UL CQI (such as UL License Infos) be by e nodes B 110 be advertised to signal WTRU 105 specific to WTRUFeedback information.Although UL CQI are initially used to UL link circuit self-adaptings, it is also used for proposed combined type open loopWith closed loop TPC closed loop portion.Generally, CQI (UL licenses) is to be based on UL channel status (such as SINR at e nodes B 110Measurement result) and SINR-CQI mapping rulers and be derived what is obtained, it means that UL CQI are represented in e nodes B 110The SINR that place is measured.Correspondingly, once WTRU 105 receives CQI and is given for the SINR- at e nodes B 110The mapping ruler of CQI mappings, then the CQI received can be interpreted as SINR estimations by WTRU 105.Estimated SINR is thenIt is used to calculate correction term according to equation (6).
E nodes B 110 is anti-to implement CQI using CQI mapping rulers (or deviation between CQI and measured SINR)Feedback generation, and the rule can be advertised to WTRU 105 with signal by e nodes B 110.In addition, this rule or parameterIt can be combined in target SINR.In this case, the dominant signaling of regular (or parameter) is unwanted.
Due to above-mentioned TPC schemes need not be in addition to systematic parameter listed above additional feedback TPC orders, this itsInclude can be with very slow speed broadcast (or directly being noticed with signal) to WTRU target SINR, area interference/noiseLevel, reference signaling transmission power and steady state value, therefore, the program are very favorable.In addition, above-mentioned TPC schemes are setMeter very flexibly, and with dynamical system/link parameter (target SINR and inter-cell interference load condition) and channel shapeState (path loss and shadow fading) is adapted, it is possible thereby to reach E-UTRA demand.In addition, above-mentioned TPC schemes also withOther link adaptation schemes are mutually compatible, such as AMC, HARQ and adaptive MIMO.
Although solution proposed here is for being proposed on E-UTRA by UL CQI (such as UL License Infos)UL combined type open loop and closed loop TPC closing member (such as correction factor), but be used as and replace, e nodes B 110 also may be usedHaving to explicitly to notice a corrective command being embedded into UL License Infos to WTRU 105 with signal.In this case,This can be used for closed loop correction factor by WTRU 105 with the corrective command of the dominant notice of signal (may tie with UL CQI phasesClose).If in addition, service e nodes B 110 coordinates the inter-cell interference between other cells, and by correspondingly adjustingProgram mark SIR or possible PmaxTo be merged to it, then the interference that the TPC proposed can be also used for minizone subtractsGently.
In order to realize that accurate UL channel estimations (being used for UL data/control signaling demodulation) and CQI estimations (are used for ULScheduling and link circuit self-adapting), it may be desirable to UL reference signal transmission powers are adjusted with comparatively faster speed, so as toSevere channel and/or system mode are tackled as quickly as possible.Even if the UL TPC proposed above for data channel with compared withSlow rate updates WTRU transmission powers (in the case of in view of every 1 millisecond of TTI UL AMC), up to 100Hz renewal speed(for example just being updated once per one or two HARQ cycle periods) that rate also can be achieved on, so as to avoid severe UL lettersRoad and CQI estimations.The renewal rate is controlled by WTRU 105, thus it is preferable to WTRU 105 can be eachUpdated when receiving CQI.
For UL control signalings, WTRU 105 will use the combinations thereof formula TPC schemes with following deviation.WhenUL CQI can use, and maximum CQI speed is when being every 1 millisecond of TTI mono- time, at this moment will use quick TPC renewal rates(such as 1000Hz).In this case, correction factor f (CQI, the SINR in equation (5)T) can be expressed as follows：
f(CQI,SINRT)=SINRT-SINRest(CQI) (dB) equation (9)
Wherein CQI is newest UL CQI.In addition, weighting factor is set equal to 1 (α=1).This will cause groupBox-like open loop and the TPC based on CQI.When no UL CQI are available, the TPC parts based on CQI by it is disabled (alsoIt is to say α=0).And this can only produce open loop TPC.
For UL shared datas channel 165, WTRU 105 will the open loop according to combination and the TPC based on CQI with allIts transmission power is determined such as 100Hz slower renewal rate.In initial transmission and/or can not be from e nodes B 110During to available UL CQI, such as during transmission pause, the transmission power control part based on CQI will be disabled, andUsed is only open loop TPC.
For UL shared datas channel 165, WTRU 105 will the open loop according to combination and the TPC based on CQI with allIts transmission power is determined such as 1000Hz very fast renewal rate.When available UL CQI can not be obtained from e nodes B 110,For example during transmission pause, the transmission power control part based on CQI will be disabled, and used is only outRing TPC.
E nodes B 110 broadcasts the systematic parameter associated with TPC, among these including its reference signal transmission power electricityFlat, interference level and power margin.In addition, e nodes B 110 also with signal to WTRU 105 notice it is associated with TPC andSpecific to WTRU parameter, among these including target SINR, WTRU maximal power level and Minimum Power Level, wherein believingOrder is completed by the L1/2 layer control signalings in band.And outer shroud then can be used for regulation target SINR.
The flow chart for the TPC processes 200 that can be implemented by Fig. 1 systems 100 is shown in Fig. 2.In step 205, implementInitial UL transmission phase.WTRU 105 is performed based on path loss according to the systematic parameter of the service offers of e nodes B 110TPC processes in open loop intra-cell, to set transmission power (such as similar with RACH processes) for the initial UL transmission stages, itsDescribed in systematic parameter can be SINR, IN0, K and DL reference signals 175 transmission power (step 210).In stepIn 215, implement the normal UL transmission stages.WTRU 105 can then be held based on the systematic parameter of the service offers of e nodes B 110TPC processes in open loop intra-cell of the row based on path loss, and the UL CQI (UL that will be provided based on service e nodes B 110License Info) perform TPC processes (step 220) in closed loop (be based on CQI) cell.Alternatively, WTRU will be based on from instituteThere is the load designator (IoT) that neighbor cell (e node B) is received to perform TPC processes (step in the cell based on IoT225).In step 230, the value that WTRU 105 will be according to produced by performing step 220 (and optional step 225) comeThe transmission power of at least one UL channel (such as UL shared datas channel 165, UL control channels 170) is set.
Embodiment
1. one kind is used for the method for performing wireless transmitter/receiver unit (WTRU) transmission power control (TPC), the partyMethod includes：
(a) WTRU performs TPC processes in open loop intra-cell by determining set point parameter；And
(b) WTRU performs TPC processes in closed loop cell by using closed loop correction factor, to adjust by open loopThe set point parameter that TPC processes are determined in cell.
2. the method according to embodiment 1, wherein the set point parameter is from the WTRU to positioned at serving cellIn serving evolved Node B (e node B) up-link (UL) path loss, and the closed loop correction factor is used forThe compensation open loop TPC related errors relevant with set point parameter.
3. the method according to any embodiment in Examples 1 and 2, wherein the closed loop correction factor is uplinkThe function of road (UL) channel quality information (CQI) and echo signal interference-to-noise ratio (SINR).
4. the method according to any embodiment in embodiment 1 and 3, wherein the set point parameter is positioned at clothesBe engaged in cell in serving evolved Node B (e node B) place echo signal interference-to-noise ratio (SINR), it is described it is closed-loop corrected becauseNumber is used to compensate for the open loop TPC correlated error relevant with set point parameter.
5. the method according to any embodiment in embodiment 1 and 3, wherein the set point parameter is positioned at clothesThe UL interference at serving evolved Node B (e node B) place in cell of being engaged in and noise power (IN0), the closed loop correction factorIt is used to compensate for the open loop TPC related errors relevant with set point parameter.
6. the method according to any embodiment in embodiment 1 and 3, wherein the set point parameter is positioned at clothesThe power control margin (K) at serving evolved Node B (e node B) place in cell of being engaged in, the closed loop correction factor is used forThe compensation open loop TPC related errors relevant with set point parameter.
7. one kind is used for the wireless transmitter/receiver unit (WTRU) for performing transmission power control (TPC), the WTRU includes：
(a) receiver；
(b) emitter；With
(c) processor being electrically coupled with Receiver And Transmitter, the processor is configured to by determining set point parameterTo perform TPC processes in open loop intra-cell, and TPC processes in closed loop cell are performed by using closed loop correction factor, to adjustThe set point parameter that TPC processes are determined in open loop intra-cell.
8. the WTRU according to embodiment 7, wherein the set point parameter is from the WTRU to positioned at serving cellIn serving evolved Node B (e node B) up-link (UL) path loss, and the closed loop correction factor is used forThe compensation open loop TPC related errors relevant with set point parameter.
9. the WTRU according to any embodiment in embodiment 7 and 8, wherein the closed loop correction factor is UL channelsThe function of quality information (CQI) and echo signal interference-to-noise ratio (SINR).
10. the WTRU according to any embodiment in embodiment 7 and 9, wherein the set point parameter is positioned at clothesBe engaged in cell in serving evolved Node B (e node B) place echo signal interference-to-noise ratio (SINR), it is described it is closed-loop corrected becauseNumber is used to compensate for the open loop TPC correlated error relevant with set point parameter.
11. the WTRU according to any embodiment in embodiment 7 and 9, wherein the set point parameter is positioned at clothesThe UL interference at serving evolved Node B (e node B) place in cell of being engaged in and noise power (IN0), the closed loop correction factorIt is used to compensate for the open loop TPC correlated error relevant with set point parameter.
12. the WTRU according to any embodiment in embodiment 7 and 9, wherein the set point parameter is positioned at clothesThe power control margin (K) at serving evolved Node B (e node B) place in cell of being engaged in, the closed loop correction factor is used forThe compensation open loop TPC related errors relevant with set point parameter.
13. one kind is used for the method for performing wireless transmitter/receiver unit (WTRU) transmission power control (TPC), the partyMethod includes：
(a) weeks of the WTRU based on the serving evolved Node B (e node B) from the WTRU in positioned at serving cellPhase property up-link (UL) path loss measurement performs TPC processes in open loop intra-cell；
(b) WTRU by the service e nodes B based on being supplied to the UL channel quality informations (CQI) of the WTRU to holdTPC processes in row closed loop cell；And
(c) WTRU is based on by performing in the open loop intra-cell that TPC processes are produced in TPC processes and closed loop cellThe combination of raw parameter value sets the transmitted power level of at least one UL channel.
14. the method according to embodiment 13, in addition to：
(d) WTRU performs the minizone TPC processes that UL is based on interference thermal noise (IoT), and wherein step (c) is also wrappedThe WTRU is included based on the TPC processes by performing TPC processes in the open loop intra-cell, in closed loop cell and the minizone based on IoTThe combination of parameter value produced by TPC processes sets the transmission power of at least one UL channel.
15. the method according to any embodiment in embodiment 13 and 14, wherein at least one described UL channel includesUL shared data channels.
16. the method according to any embodiment in embodiment 13 and 14, wherein at least one described UL channel includesUL control channels.
17. the method according to embodiment 14, in addition to：
(e) initial UL transmission phase is implemented to the WTRU.
18. the method according to embodiment 17, wherein step (a) also include：
(a1) the service e nodes B sends multiple open loop parameters to the WTRU with signal, and wherein open loop parameter is dividedFa Song or it not sent as single synthetic parameters；And
(a2) WTRU is identified below based on downlink (DL) reference signal and open loop parameter by servicing e nodes B transmissionTransmission power PTx：
PTx=max (min (SINRT+PL+IN0+K,Pmax),Pmin), wherein SINRTBe service e nodes B at using dB asThe echo signal interference-to-noise ratio (SINR) of unit, PL be based on DL reference signals from service e nodes B to WTRU using dB asUnit includes the path loss of shadow fading, IN0It is the UL interference at service e nodes B in units of dBm and noise work(Rate, K is the power control margin for servicing e nodes B, and PmaxAnd PminIt is for WTRU respectively in units of dBmThe minimum and maximum transmitted power level of the transmission carried out at least one UL channel.
19. the method according to embodiment 17, wherein step (d) also include：
(d1) WTRU transmission power is identified below based on downlink (DL) reference signal by servicing e nodes B transmissionPTx：
PTx=max (min (SINRT+PL+IN0+K+Δ(IoTS),Pmax),Pmin), wherein SINRTIt is in service e nodes BThe echo signal interference-to-noise ratio (SINR) that dB is unit is sentenced, PL is to be based on DL reference signals from service e nodes B to WTRUInclude the path loss of shadow fading, IN in units of dB0It is the UL interference at service e nodes B in units of dBmAnd noise power, K is the power control margin for servicing e nodes B, PmaxAnd PminBe respectively in units of dBm forThe minimum and maximum transmitted power level for the transmission that WTRU is carried out at least one UL channel, and Δ (IoTS) represent ULLoad control step-length, the step-length is the UL interference load designators IoT of most strong neighbor cellSFunction.
20. the method according to embodiment 17, wherein step (a) also include：
(a1) WTRU performs in the open loop intra-cell based on path loss TPC processes to set for initial UL transmissionThe transmission power in stage.
21. the method according to any embodiment in embodiment 13-20, wherein the UL CQI are UL License Infos.
22. the method according to embodiment 14, wherein step (d) also include：
(d1) the e nodes B measurements UL interference levels；
(d2) the e nodes B determines whether measured UL interference levels exceed predetermined threshold；And
(d3) the e nodes B is rule-based or interference load designator is broadcasted in triggering, wherein the interference load is indicatedAccord with whether the UL interference levels measured by instruction exceed predetermined threshold.
23. the method according to embodiment 22, wherein measured UL interference levels are UL interference thermal noises (IoT)Measurement.
24. the method according to embodiment 17, wherein step (a) and (b) are performed after step (e), and step(b) also include：
(b1) WTRU transmission powers are calculated as below：
Ptx=max (min (SINRT+PL+IN0+K+α·f(CQI,SINRT),Pmax),Pmin), wherein SINRTIt is in serviceE nodes B sentences the echo signal interference-to-noise ratio (SINR) that dB is unit, and PL is to be based on DL reference signals from service e nodes BInclude the path loss of shadow fading, IN in units of dB to WTRU0It is to service at e nodes B in units of dBmUL is disturbed and noise power, and K is the power control margin for servicing e nodes B, f (CQI, SINRT) be based on UL CQI withAnd corresponding target SINR closed loop correction factor, α is weighting factor, and PmaxAnd PminIt is in units of dBm respectivelyFor the minimum and maximum transmitted power level of the WTRU transmission carried out at least one UL channel.
25. the method according to embodiment 24, wherein 0≤α≤1.
26. the method according to any embodiment in embodiment 24 and 25, wherein the closed loop correction factor f (CQI,SINRT) it is used to compensate for open loop TPC related errors.
27. the method according to any embodiment in embodiment 24-26, wherein being represented in view of UL CQI in e nodesThe SINR received at B, closed loop correction factor f (CQI, the SINRT) it is according to the UL from service e nodes B by WTRUWhat CQI feedback was calculated, thus f (CQI, SINTT)=SINRT-E{SINRest(CQI) } (dB), wherein SINRest(CQI) representBe e Node-B receivers arrive SINR estimation, the estimation is then that WTRU is derived by from UL CQI feedbacks.
28. the method according to embodiment 27, wherein E { SINRest(CQI) what is } represented is the estimation relative to the timeSINR average values, thus：
E{SINRest(CQIk)=ρ E { SINRest(CQIk-1)}+(1-ρ)·E{SINRest(CQIk), wherein CQIkGenerationThe CQI that table is received for k-th, ρ is then averaging filter coefficient, 0≤ρ≤1.
29. one kind is used for the wireless transmitter/receiver unit (WTRU) for performing transmission power control (TPC), the WTRU bagsInclude：
(a) receiver；
(b) with the processor of reception mechanical-electric coupling, the processor is configured to be based on from the WTRU to positioned at serving cellIn serving evolved Node B (e node B) periodic uplink (UL) path loss measurement perform in open loop intra-cellTPC processes, and based on by the receiver from the service e Node-B receivers to UL channel quality informations (CQI) holdTPC processes in row closed loop cell；And
(c) emitter being electrically coupled with processor, the emitter is configured to be based on by performing in the open loop intra-cellThe combination of parameter value in TPC processes and closed loop cell produced by TPC processes produces at least one with transmitted power levelIndividual UL channels.
30. the WTRU according to embodiment 29, wherein the processor is configured to perform UL based on interference thermal noise(IoT) minizone TPC processes, and the emitter be configured to be based on by performing TPC mistakes in the open loop intra-cellThe combination of TPC processes and the parameter value produced by minizone TPC processes based on IoT has hair to produce in journey, closed loop cellPenetrate at least one UL channel of power level.
31. the WTRU according to any embodiment in embodiment 29 and 30, wherein at least one described UL channel includesUL shared data channels.
32. the WTRU according to any embodiment in embodiment 29 and 30, wherein at least one described UL channel includesUL control channels.
33. the WTRU according to any embodiment in embodiment 29-32, wherein the receiver is configured to receiveWTRU multiple open loop parameters are signaled to by servicing e nodes B, wherein open loop parameter is sent separately or as singleSynthetic parameters are sent, and the processor is configured to believe based on downlink (DL) benchmark by servicing e nodes B transmissionNumber and open loop parameter WTRU transmission power P is identified belowTx：
PTx=max (min (SINRT+PL+IN0+K,Pmax),Pmin), wherein SINRTBe service e nodes B at using dB asThe echo signal interference-to-noise ratio (SINR) of unit, PL be based on DL reference signals from service e nodes B to WTRU using dB asUnit includes the path loss of shadow fading, IN0It is the UL interference at service e nodes B in units of dBm and noise work(Rate, K is the power control margin for servicing e nodes B, and PmaxAnd PminIt is for WTRU respectively in units of dBmThe minimum and maximum transmitted power level of the transmission carried out at least one UL channel.
34. the WTRU according to embodiment 30, wherein the processor is configured to be based on by servicing e nodes B transmissionDownlink (DL) reference signal WTRU transmission power P is identified belowTx：
PTx=max (min (SINRT+PL+IN0+K+Δ(IoTS),Pmax),Pmin), wherein SINRTIt is in service e nodes BThe echo signal interference-to-noise ratio (SINR) that dB is unit is sentenced, PL is to be based on DL reference signals from service e nodes B to WTRUInclude the path loss of shadow fading, IN in units of dB0It is the UL interference at service e nodes B in units of dBmAnd noise power, K is the power control margin for servicing e nodes B, PmaxAnd PminBe respectively in units of dBm forThe minimum and maximum transmitted power level for the transmission that WTRU is carried out at least one UL channel, and Δ (IoTS) represent ULLoad control step-length, the step-length is the UL interference load designators IoT of most strong neighbor cellSFunction.
35. the WTRU according to any embodiment in embodiment 29-34, wherein the processor is configured to performTPC processes are to set the transmission power for initial UL transmission phase in open loop intra-cell based on path loss.
36. the WTRU according to any embodiment in embodiment 29-35, wherein the UL CQI are UL License Infos.
37. the WTRU according to any embodiment in embodiment 29-36, wherein the processor be configured to it is as followsCalculate WTRU transmission powers：
Ptx=max (min (SINRT+PL+IN0+K+α·f(CQI,SINRT),Pmax),Pmin), wherein SINRTIt is in serviceE nodes B sentences the echo signal interference-to-noise ratio (SINR) that dB is unit, and PL is to be based on DL reference signals from service e nodes BInclude the path loss of shadow fading, IN in units of dB to WTRU0It is to service at e nodes B in units of dBmUL is disturbed and noise power, and K is the power control margin for servicing e nodes B, f (CQI, SINRT) be based on UL CQI withAnd corresponding target SINR closed loop correction factor, α is weighting factor, and PmaxAnd PminIt is in units of dBm respectivelyFor the minimum and maximum transmitted power level of the WTRU transmission carried out at least one UL channel.
38. the WTRU according to embodiment 37, wherein 0≤α≤1.
39. the WTRU according to any embodiment in embodiment 37 and 38, wherein the closed loop correction factor f (CQI,SINRT) it is used to compensate for open loop TPC related errors.
40. the WTRU according to any embodiment in embodiment 37-39, wherein being represented in view of UL CQI in e nodesThe SINR received at B, closed loop correction factor f (CQI, the SINRT) it is according to the UL from service e nodes B by WTRUWhat CQI feedback was calculated, thus f (CQI, SINTT)=SINRT-E{SINRest(CQI) } (dB), wherein SINRest(CQI) representBe e Node-B receivers arrive SINR estimation, the estimation is then that WTRU is derived by from UL CQI feedbacks.
41. the WTRU according to embodiment 40, wherein E { SINRest(CQI) what is } represented is the estimation relative to the timeSINR average values, thus：
E{SINRest(CQIk)=ρ E { SINRest(CQIk-1)}+(1-ρ)·E{SINRest(CQIk), wherein CQIkGenerationThe CQI that table is received for k-th, ρ is then averaging filter coefficient, 0≤ρ≤1.
42. one kind is used for the evolved node B (e node B) for performing transmission power control (TPC), e nodes B includes：
(a) processor, is configured to measure UL interference levels, and it is pre- to determine whether measured UL interference levels exceedDetermine threshold value；With
(b) emitter being electrically coupled with processor, the emitter is configured to rule-based or triggering broadcast interference loadDesignator, wherein the interference load designator indicates whether measured UL interference levels exceed predetermined threshold.
43. the e node B according to embodiment 42, wherein measured UL interference levels, which are UL, disturbs thermal noise(IoT) measure.
44. the e node B according to embodiment 42, wherein the emitter is configured to send echo signal with signalInterference-to-noise ratio (SINR) level SINRTTo wireless transmitter/receiver unit (WTRU), as from the e nodes B to the WTRU'sDistance and the function of at least one of given quality requirement.
45. the e node B according to embodiment 44, wherein given quality requirement is BLER(block error rate) (BLER).
46. the e node B according to any embodiment in embodiment 42-45, in addition to：
(c) mapping table electrically connected with the processor, wherein the processor is configured to use the mapping table by meshMark mass value is mapped to target sinr values.
47. the e node B according to embodiment 46, wherein the target quality is BLER(block error rate) (BLER).
48. the e node B according to any embodiment in embodiment 42-47, wherein the emitter is configured to lifeInto downlink (DL) reference signal.
49. the e node B according to any embodiment in embodiment 42-48, wherein the emitter is configured to useSignal transmitting power control tolerance limit K.
50. the e node B according to embodiment 49, wherein the power control margin K is embedded in target SINRSINRTIn, thus SINRT(after insertion)=SINRT+K(dB)。
51. the e node B according to any embodiment in embodiment 42-50, wherein the processor is configured to surveyMeasure or assess total UL interference and noise level IN0, the IN0Averagely arrived all in the subcarrier or subcarrier that use by processorSubset on, and the emitter is configured to send the IN with signal0。
52. the e node B according to any embodiment in embodiment 42-51, wherein the emitter is configured to useSignal sends maximum UL transmitted power levels PmaxWith minimum UL transmitted power levels Pmin。
53. the e node B according to any embodiment in embodiment 42-52, wherein the emitter is configured to useSignal sends UL channel quality informations (CQI).
54. the e node B according to embodiment 53, wherein the UL CQI include UL License Infos or modulation and codingCollect (MCS) information, UL CQI are initially sent for the purpose of UL link adaptations.
55. the e node B according to any embodiment in embodiment 42-54, wherein the emitter is configured to useSignal sends channel quality information (CQI) mapping ruler, is generated for CQI feedback.
Although the feature and element of the present invention are described with specific combination in a preferred embodiment, oftenIndividual feature or element can be used alone in the case of other features and element of not described preferred embodiment, orWith or without the present invention other features and element combine it is various in the case of use.Method or flow chart that the present invention is providedIt can implement in the computer program, software or firmware by all-purpose computer or computing device, wherein the computer journeySequence, software or firmware are comprising in a computer-readable storage medium, on computer-readable storage medium in tangible modeThe example of matter includes read-only storage (ROM), random access memory (RAM), register, buffer storage, semiconductor and depositedStore up magnetizing mediums, magnet-optical medium and the CD-ROM disks and digital multifunctional light of equipment, internal hard drive and moveable magnetic disc etcThe optical medium of disk (DVD) etc.
For example, appropriate processor includes：General processor, application specific processor, conventional processors, data signalProcessor (DSP), multi-microprocessor, the one or more microprocessors associated with DSP core, controller, microcontrollerDevice, application specific integrated circuit (ASIC), field programmable gate array (FPGA) circuit, any integrated circuit (IC) and/or shapeState machine.
The processor associated with software can be used for realizing RF transceiver, with wireless transmitter receiver unit(WTRU), used in user equipment, terminal, base station, radio network controller or any host computer.WTRU can be used in combination with the module implemented using hardware and/or software form, for example camera, camara module, video electricityRoad, speaker-phone, vibratory equipment, loudspeaker, microphone, television transceiver, Earphone with microphone, keyboard, bluetoothModule, tuneFrequently (FM) radio unit, liquid crystal display (LCD) display unit, Organic Light Emitting Diode (OLED) display unit, numeralMusic player, media player, video game machine module, explorer and/or any WLAN(WLAN) module.