CN101589561B - Combination type open/close (based on CQI) up-link transmission power for the interference mitigation of E-UTRA controls - Google Patents

Abstract

Disclose the method and apparatus that a kind of transmitting power for performing wireless transmitter/receiver unit (WTRU) controls (TPC).Receiver receives down link control information (DCI).This DCI includes uplink scheduling information and TPC information.Processor determines the transmitted power level for physical uplink link channel.Determined by transmitted power level based at least one path loss factor, this path loss factor is conditioned in response to TPC information and measured path loss.Then transmitter based on schedule information and determined by transmitted power level Downlink channels physically upload transmission information.

Description

Combination type open/close (based on CQI) uplink for the interference mitigation of E-UTRA Road is launched power and is controlled

Technical field

The present invention relates to wireless communication system.

Background technology

For evolved universal terrestrial radio accesses (E-UTRA) up-link (UL), the most close to the third generation Make partnership projects (3GPP) Long Term Evolution (LTE) working group 1 (WG1) and have submitted some transmitting power control (TPC) proposals.This A little proposal can be generally divided into (slowly) open loop TPC and slow closed loop or TPC based on channel quality information (CQI).

Open loop TPC measures by path loss and based on systematic parameter, its path loss measurement is at wireless Penetrate/receive the upper execution of unit (WTRU), and systematic parameter is provided by evolved node B (e node B).

Closed loop TPC is typically based on the TPC feedback information (such as TPC command) from e node B periodically transmission, Wherein this feedback information is typically used in what the Signal Interference and Noise Ratio (SINR) recorded at e node B was derived by.

For example, open loop TPC can very effectively compensate long-term letter in the case of not launching power historical record Road change (such as path loss and shadow fading (shadowing)).But, open loop TPC normally results in path loss and measures Error and transmitting power setting error.On the other hand, it is with from e node B signal due to slow closed loop or TPC based on CQI That notices is fed back to basis, and therefore, its error to measuring and launch in power setting is less sensitive.But, when because of UL Transmission suspends or feedback transmission is suspended and when there is no available feedback, or when channel variation is violent, slow closed loop or based on CQI TPC will reduce performance.

Summary of the invention

For E-UTRA UL, institute it is considered that at least compensate path loss and shade by TPC, and/or alleviates dry Disturb.Disclosed herein a kind of enhancement mode UL TPC open loop TPC scheme and closed loop TPC being combined togather with interference mitigation Scheme.Closed loop TPC is based on CQI (such as UL License Info or modulation and encoding setting (MCS) information).This enhancing Type UL TPC scheme may be used for UL data and controls channel.Additionally, this enhancement mode UL TPC scheme proposed is the most very Flexibly, and be adaptive to dynamical system/link parameter and channel status, in order to reach the demand of E-UTRAUL.

Additionally, in the case of channel and CQI estimation are based on UL reference signal, in order to avoid severe UL channel Estimate with CQI, it is proposed that perform UL TPC for data channel (it is to say, each with the low rate of such as 100Hz etc Or two mixed automatic repeat request (HARQ) cycle periods perform a TPC and update).To control signaling associated with data For, it is assumed that maximum CQI speed is that every 1 millisecond of Transmission Time Interval (TTI) is carried out once, then TPC renewal rate can To increase to 1000Hz,

Accompanying drawing explanation

By reading with reference to accompanying drawing, general introduction above and follow-up detailed description be may be better understood, its In:

Fig. 1 is shown that including the wireless communication system of WTRU and e node B；And

Fig. 2 is shown that the flow chart of the TPC process implemented by Fig. 1 system.

Detailed description of the invention

The term " wireless transmitter/receiver unit (WTRU) " hereafter quoted is including, but not limited to subscriber equipment (UE), shifting Dynamic station, fixing or moving user unit, pager, cell phone, personal digital assistant (PDA), computer or other are any The subscriber equipment that can work in wireless environments.The term " evolved node B (e node B) " hereafter quoted includes but does not limits to In base station, node B, community, site controller, access point (AP) or other any interfaces that can work in wireless environments set Standby.

Fig. 1 is shown that including at least one WTRU 105 and the wireless communication system of at least one service e node B 110 100.This WTRU 105 includes receiver 115, transmitter 120, processor 125 and at least one antenna 130.This service e saves Point B 110 includes transmitter 135, receiver 140, processor 145, mapping table 150 and at least one antenna 155.WTRU 105 and e node B 110 are to share data channel 165 and UL control channel via downlink (DL) control channel 160, UL 170 communicate.

Processor 145 in e node B110 performs UL according to the signal received by receiver 140 and disturbs thermal noise (IoT) measure, and by the IoT measurement result that records compared with predetermined threshold.Processor 145 also can generate interference load and refer to Showing symbol, this designator then can mode that is rule-based by the transmitter 135 of e node B 110 or that trigger be broadcasted.This interference is born Carry designator instruction is whether the IoT performed on e node B 110 measures beyond predetermined threshold.When connecing in WTRU 105 When receipts machine 115 receives and decoded this interference load designator, the processor 125 in WTRU 105 can determine e node B 110 The state of the IoT at place, this state may be used for alleviating the presence of intercell interference in e node B 110.

When WTRU 105 is positioned at specific cell, it can perform open loop according to systematic parameter and path loss measurement result TPC.WTRU 105 alleviates the presence of intercell interference in e node B 110, wherein said e node B according to interference load designator 110 are among adjacent with described specific cell and the strongest compared with other neighbor cells community.Described Qiang community is Refer to that WTRU 105 has the community of the highest path gain (namely lowest path loss) to it.Then, to likely because opening Ring error and for the transmitting power that biased, WTRU 105 controls, according to via DL, CQI and the target that channel 160 receives SINR corrects its transmitting power calculated based on open loop, thus compensates open loop error.

It should be noted that CQI refers to e node B 110 signal controls letter via the DL for UL link circuit self-adapting Road 160 and to WTRU 105 notice UL License Info (or MCS).What CQI represented is that service e node B 110 controls letter at DL To the UL channel quality specific to WTRU of WTRU 105 feedback in road 160.In E-UTRA, CQI is with UL License Info Form provides.Target SINR is specific for the parameter of WTRU, and this parameter is determined by e node B 110, and is made by higher Signaling and be signaled to WTRU's 105.

The WTRU 105 sharing data channel 165 for UL launches power P_TxIt it is transmitter 135 institute according to e node B110 The DL reference signal 175 launched and determine in initial transmission phase.DL reference signal 175 has known transmitting power, And WTRU 105 is to use this transmitting power to carry out execution route loss measurement.For the TPC of Intra-cell, WTRU 105 Initial Trans P_TxAccording to open loop TPC and define as follows:

P_Tx=max (min (SINR_T+PL+IN₀+ K, P_max), P_min) equation (1A)

Wherein SINR_TIt is the echo signal interference-to-noise ratio (SINR) at service e node B 110 in units of dB, and And PL is from service e node B 110 to WTRU 105 and path loss (the namely set point ginseng in units of dB Number), include shadow fading among these.WTRU 105 then comes measuring route loss, wherein this signal according to DL reference signal 175 Launching power is known via DL signaling on WTRU 105.Value IN₀Be service e node B 110 in units of dBm UL interference and noise power.K is to account for DL reference signal 175 and may deviate from practice the feelings of actual emission power For servicing the power control margin of e node B 110 under condition.P_maxAnd P_minBe respectively in units of dBm for WTRU 105 The minimum and maximum transmitted power level of the transmission carried out on data channel 165 is shared at UL.

Assume for target SINR of WTRU 105 (or subgroup of WTRU) it is can be according to service e node B 110 Certain measure and regulate.Outer shroud TPC scheme then may be used for the regulation of target SINR.Generally, target SINR is based on UL The target link quality (such as BLER(block error rate) (BLER)) of shared data channel 165 determines.Additionally, different multipath fading letters Road state typically requires the different target SINR (such as BLER) for specifying target link quality.Correspondingly, this is measured and includes Target link quality (and being likely to be fading channel quality) for WTRU 105.

For UL multiple-input and multiple-output (MIMO), needing for given link quality in view of different MIMO mode In the case of the different capacity of (such as BLER) or SINR, target SINR additionally depends on selected MIMO mode.In this situation Under, WTRU 105 can include multiple antenna 130.

As replacement, the transmitting power of WTRU 105 can be defined as containing minizone TPC, as follows:

P_Tx=max (min (SINR_T+PL+IN₀+K+Δ(IoT_S), P_max), P_min) equation (1B)

Its intermediate value Δ (IoT_S) representing UL load control step-length, this step-length is the UL interference load of the strongest (S) neighbor cell Designator (IoT_S)IoT_SFunction.

Δ(IoT_S) choose integer value, as follows:

Equation (2)

Wherein δ is reservation system parameter, such as δ=-1 or-2dB.By using Δ (IoT_S), neighbor cell can be alleviated In presence of intercell interference.The interference bringing other communities owing to being positioned at the WTRU of center of housing estate is in cell edge less than those WTRU, the segmentation during therefore load controls step-length considers as follows:

Equation (3)

Wherein x is the inter-cell load control factor of segmentation.

The strongest neighbor cell be based on from single neighbor cell to the path loss of WTRU 105 measure and at WTRU 105 On determine, wherein this strongest neighbor cell be in the community adjacent with the community currently providing service for WTRU 105 with WTRU 105 has the neighbor cell of lowest path loss.

By introducing Δ (IoT_S), presence of intercell interference (such as minizone TPC) can be alleviated, for the strongest neighbor cell The most especially true.For the TPC of minizone, e node B will measure UL interference (with rule or periodic form), the most then can Determine that whether the interference level recorded is beyond predetermined threshold.The state of the UL interference finally given is to use IoT_S(namely bear Carry designator) and from (with rule or the periodic form) of e node B 110 broadcast.For example, if interference is beyond this threshold Value, then IoT_SIt is arranged to 1, so, owing to e node B 110 can suffer from too much presence of intercell interference in UL, because of This, e node B 110 will be launched power and reduced a certain amount of by the WTRU in order neighbor cell.Otherwise, IoT_STo be set Becoming 0, thus e node B 110 will receive current UL interference level, and so, the WTRU in neighbor cell need not reduce It launches power.The load designator being received from the strongest neighbor cell is then decoded by WTRU 105, the most then can follow this Order (IoT_S).If by IoT_SIt is decoded as 1, then the transmitting power reduction Δ (IoT of WTRU 105_S), say, that Δ (IoT_S) ＜ 0dB.If by IoT_SIt is decoded as 0, then Δ (IoT_S)=0dB.

Assume that each community all periodic broadcast UL interference load bits (access with High Speed Uplink Packet (HSUPA) relative grant in is similar), thus WTRU 105 can decode the designator from the strongest selected neighbor cell Bit.According to the path loss ratio between Serving cell and the strongest neighbor cell, this WTRU 105 can judge that it is in little Area edge or Intra-cell.As replacement, the inter-cell load of segmentation controls factor x and can be defined below:

Equation (4)

After initial transmission phase, WTRU 105 is in energising (processing similar with RACH (RACH)) therebetween Or the transmitting power immediately beginning to implement its TPC, WTRU after setting up session connection is calculated as below:

P_ts=max (min (SINR_T+PL+IN₀+ K+ α f (CQI, SINR_T), P_max), P_min) equation (5)

Wherein f (CQI, SINR_T) it is that (such as UL is permitted closed loop correction factor based on UL CQI and corresponding target SINR Can information or MCS information).Weighting factor α can determine according to channel status and CQI availability (or UL transmission suspends), Wherein 0≤α≤1.Give an example, transmit if as the UL data lacking scheduling and do not have can to obtain from e node B 110 UL CQI (UL license or MCS information), then weighting factor α will be arranged to 0.Otherwise, weighting factor α will be arranged to 1. Although for simplicity, here weighting factor α has been arranged to 0 or 1, but has replaced embodiment and further comprises and channel The self adaptation α value that state and UL/DL channel configuration adapt.

Correction factor f (CQI, SINR_T) it is used to compensate for open loop TPC related errors, include among these being mainly due to UL With the path loss measurement error of the DL imperfect reciprocity in FDD (FDD), and the transmitter 120 of WTRU 105 In amplify and the infringement that causes due to non-linear power.In addition to as the path loss of set point parameter, e node B 110 Correction factor can also be promoted to regulate TPC relevant system parameters, such as SINR, IN₀And K, these parameters also set Point parameter.Such as, it is necessarily appointment WTRU 105 at e node B 110 and regulates target SINR, and then allow WTRU 105 When solving described regulation, e node B 110 can be that WTRU 105 regulates CQI (UL license) rather than direct signal accordingly by mesh Mark SINR is advertised to WTRU 105.The SINR received at e node B 110, this correction factor is represented in view of UL CQI It is to be calculated according to UL CQI (UL license or the MCS information) feedback from service e node B 110 by WTRU 105.Such as,

F (CQI, SINT_T)=SINR_T-E{SINR_est(CQI) } (dB) equation (6)

Wherein SINR_est(CQI) represent is that the SINR that e Node-B receiver arrives estimates, this estimation is then that WTRU105 is from UL CQI feedback is derived by.E{SINR_est(CQI) } represent is the estimation SINR meansigma methods relative to the time, thus:

E{SINR_est(CQI^k)=ρ E{SINR_est(CQI^k-1)}+(1-ρ)·E{SINR_est(CQI^k) equation (7)

Wherein CQI^kCQI, ρ that the kth being represented receives are then averaging filter coefficient, and 0≤ρ≤1.

To being given by target SINR and the difference estimated between SINR (being derived by from the CQI reported) as mentioned above Correction factor for, what this correction factor typically represented is needs the open loop TPC related errors that compensates.

The e node B signaling of the TPC scheme for being proposed

Target SINR level SINR_TIt is a parameter specific to WTRU (or WTRU subgroup), as from e node B The function (such as path loss) of the distance of 110 to WTRU 105 and/or the appointment quality requirement of such as BLER etc, this parameter WTRU 105 can be advertised to signal by e node B 110.Generally, e node B 110 is to use mapping table 150 by target matter Amount (such as BLER) is mapped to target sinr values.How generating this mapping table is then the special of e node B (or carrier operator) There is scheme.Target SINR can be conditioned by outer loop mechanism.The signaling of target SINR when it regulates by band in L1/2 controls what signaling completed.

Power control margin K is primarily used for DL reference signal and the parameter specific to e node B, and this parameter can be by e Node B 110 signal is advertised to WTRU 105.Such as, it is with constant emission power level transmission due to DL reference signal 175 , and this level can be understood by higher signaling on WTRU, therefore, DL reference signal 175 can be used for WTRU The path loss of 105 is measured.But, the actual emission power of DL reference signal 175 is likely because of the proprietary scheme of e node B And it is different from the performance number noticed with signal.In this case, power excursion will between actually used transmitting power with Between the transmitting power noticed in semi-static mode by broadcast channel (BCH).For K, it is likely to be semi-static , and be made by broadcast channel (BCH) and be advertised.WTRU 105 then by this information based on its UL/DL path loss Calculate.It should be noted that although it is assumed that power control margin K individually notices with signal together with other parameters, but it Target SINR i.e. SINR can also be embedded in_TIn, thus:

SINR_T(after embedding)=SINR_T+ K (dB) equation (8)

In this case, K is it is not necessary that be advertised to WTRU's 105 with dominant signal.

To total UL interference and noise level IN₀For, it is averaged in all subcarrier (or radio being in use Carrying (RB)) or the subset of subcarrier on, this level can be advertised to WTRU 105 by e node B 110 with signal.This electricity Put down and measured/be derived by (and can notice by BCH) by e node B 110.The usual phase of renewal rate of this signaling To relatively low.E node B 110 is then to use the e proprietary scheme of node B of such as noise estimation techniques etc to survey with regular fashion Amount/estimate IN₀'s.

To minimum and maximum UL transmitted power level P_maxAnd P_minFor, these level can be used signal by e node B 110 It is advertised to WTRU 105.Additionally, these level both can be based on the parameter of WTRU ability, it is also possible to by e node B 110 letter Number clearly notice.

UL CQI (such as UL License Info or MCS information) is for UL link circuit self-adapting (such as Adaptive Modulation and Coding (MCS)) and initially with signal notice (its maximum signaling rate be each TTI once, such as 1000Hz), and this UL CQI can be advertised to WTRU 105 by e node B 110 with signal.

UL CQI (such as UL License Info) be by e node B 110 signal be advertised to WTRU 105 specific to WTRU Feedback information.Although UL CQI is initially used to UL link circuit self-adapting, but it is also used for proposed combination type open loop Closed loop portion with closed loop TPC.Generally, CQI (UL license) is that (SINR at such as e node B 110 surveys based on UL channel status Amount result) and SINR-CQI mapping ruler and being derived obtain, it means that UL CQI represents at e node B 110 The SINR recorded.Correspondingly, once WTRU 105 receives CQI and is given the SINR-CQI at e node B 110 and reflects The mapping ruler penetrated, then the CQI received can be interpreted as SINR and estimate by WTRU 105.Estimated SINR is then used for Correction term is calculated according to equation (6).

E node B 110 uses CQI mapping ruler (or the deviation between CQI and measured SINR) to implement CQI feedback Generate, and this rule can be advertised to WTRU105 by e node B 110 with signal.Additionally, this rule or parameter can also It is combined in target SINR.In this case, the dominant signaling of rule (or parameter) is unwanted.

Owing to above-mentioned TPC scheme need not the additional feedback TPC command in addition to systematic parameter listed above, among these Including can be electric to target SINR of WTRU, area interference/noise with the slowest speed broadcast (or direct signal notice) Flat, reference signaling launches power and steady state value, and therefore, the program is very favorable.Additionally, above-mentioned TPC scheme is designed Very flexible, and with dynamical system/link parameter (target SINR and presence of intercell interference load condition) and channel status (path loss and shadow fading) adapts, and thus can reach the demand of E-UTRA.It addition, above-mentioned TPC scheme also with other Link adaptation scheme is mutually compatible, such as AMC, HARQ and adaptive MIMO.

Although solution proposed here be used for UL CQI (such as UL License Info) being proposed about E-UTRA UL Combination type open loop and the closing member (such as correction factor) of closed loop TPC, but as replace, e node B 110 can also use Signal having to explicitly notices a corrective command being embedded in UL License Info to WTRU 105.In this case, WTRU This can be used for closed loop correction factor (may combine) with UL CQI with the corrective command of the dominant notice of signal by 105.This Outward, if service e node B 110 coordinates the presence of intercell interference between other communities, and by correspondingly regulation target SIR Or possible P_maxIt is merged, then the TPC proposed can be also used for the interference mitigation of minizone.

Estimate that (for UL data/control signal demodulation) and CQI estimate (to adjust for UL to realize accurate UL channel Degree and link circuit self-adapting), it may be desirable to regulate UL reference signal with comparatively faster speed and launch power, in order to the greatest extent may be used Severe channel and/or system mode can be tackled soon.Even if the UL TPC for data channel proposed above is with relatively slower Rate updates WTRU and launches power (in the case of the ULAMC in view of every 1 millisecond of TTI), and the renewal rate of up to 100Hz is also (one or two HARQ cycle periods such as every just update once) that can realize, thus avoid severe UL channel and CQI Estimate.This renewal rate is controlled by WTRU 105, thus it is preferable to WTRU 105 can receive CQI every time Shi Gengxin.

For UL controls signaling, WTRU 105 will use the combinations thereof formula TPC scheme with following deviation.Work as UL CQI can use, and when maximum CQI speed is every 1 millisecond of TTI mono-time, at this moment will use quick TPC renewal rate (example Such as 1000Hz).In this case, correction factor f (CQI, the SINR in equation (5)_T) can be expressed as follows:

F (CQI, SINR_T)=SINR_T-SINR_est(CQI) (dB) equation (9)

Wherein CQI is up-to-date UL CQI.Additionally, weighting factor is set equal to 1 (α=1).This will cause combination The open loop of formula and TPC based on CQI.When not having UL CQI can use, TPC based on CQI part by disabled (that is α=0).And this only can produce open loop TPC.

For UL is shared data channel 165, WTRU 105 will according to combination open loop and TPC based on CQI with all As the slower renewal rate of 100Hz determines that it launches power.In initial transmission and/or cannot obtain from e node B 110 During the UL CQI that can use, such as, during transmission suspends, transmitting power control section based on CQI is divided disabled, and institute That use is only open loop TPC.

For UL is shared data channel 165, WTRU 105 will according to combination open loop and TPC based on CQI with all As the very fast renewal rate of 1000Hz determines that it launches power.When obtaining, from e node B 110, the UL CQI that can use, Such as during transmission suspends, transmitting power control section based on CQI is divided disabled, and the only open loop used TPC。

E node B 110 broadcasts the systematic parameter that is associated with TPC, include among these its reference signal transmitted power level, Interference level and power margin.Additionally, e node B 110 is also associated and specific with TPC to WTRU105 notice with signal In the parameter of WTRU, including target SINR, WTRU maximal power level and Minimum Power Level among these, wherein signaling is to borrow The L1/2 layer in band is helped to control what signaling completed.Outer shroud then may be used for regulating target SINR.

Fig. 2 is shown that the flow chart of the TPC process 200 can implemented by Fig. 1 system 100.In step 205, implement Initial UL transmission phase.The systematic parameter that WTRU 105 provides according to service e node B 110 performs based on path loss opening TPC process in ring community, in order to transmitting power (such as similar with RACH process), Qi Zhongsuo are set for initial UL transmission phase Stating systematic parameter can be SINR, IN₀, transmitting power (step 210) of K and DL reference signal 175.In step 215, real Execute normal UL and transmit the stage.WTRU 105 then can perform based on path based on the systematic parameter that service e node B 110 provides TPC process in the open loop intra-cell of loss, and will come based on the UL CQI (UL License Info) that service e node B 110 provides Perform TPC process (step 220) in closed loop (based on CQI) community.As selection, WTRU will be based on from all neighbor cells The load designator (IoT) that (e node B) receives performs TPC process (step 225) in community based on IoT.In step In 230, WTRU 105 will arrange at least one according to performing step 220 (and optional step 225) produced value The transmitting power of UL channel (such as UL shares data channel 165, UL controls channel 170).

Embodiment

1. it is used for performing the method that the transmitting power of wireless transmitter/receiver unit (WTRU) controls (TPC), the method Including:

A () described WTRU is determined by set point parameter to perform TPC process in open loop intra-cell；And

B () described WTRU is by using closed loop correction factor to perform TPC process in closed loop community, little by open loop with regulation The set point parameter that in district, TPC process determines.

2., according to the method described in embodiment 1, wherein said set point parameter is to being positioned at Serving cell from described WTRU In up-link (UL) path loss of serving evolved Node B (e node B), and described closed loop correction factor is used for Compensate the open loop TPC related errors relevant with set point parameter.

3., according to the method described in any embodiment in embodiment 1 and 2, wherein said closed loop correction factor is up-link (UL) channel quality information (CQI) and the function of echo signal interference-to-noise ratio (SINR).

4., according to the method described in any embodiment in embodiment 1 and 3, wherein said set point parameter is for be positioned at service The echo signal interference-to-noise ratio (SINR) at serving evolved Node B (the e node B) place in community, described closed loop correction factor It is used to compensate for the open loop TPC related errors relevant with set point parameter.

5., according to the method described in any embodiment in embodiment 1 and 3, wherein said set point parameter is for be positioned at service The UL interference at serving evolved Node B (the e node B) place in community and noise power (IN₀), described closed loop correction factor quilt For compensating the open loop TPC related errors relevant with set point parameter.

6., according to the method described in any embodiment in embodiment 1 and 3, wherein said set point parameter is for be positioned at service The power control margin (K) at serving evolved Node B (the e node B) place in community, described closed loop correction factor is used to compensate for The open loop TPC related errors relevant with set point parameter.

7. one kind is used for the wireless transmitter/receiver unit (WTRU) performing to launch power control (TPC), and this WTRU includes:

(a) receiver；

(b) transmitter；With

C the processor of () and Receiver And Transmitter electric coupling, this processor is configured to be determined by set point parameter Perform TPC process in open loop intra-cell, and by using closed loop correction factor to perform TPC process in closed loop community, with regulation The set point parameter determined by TPC process in open loop intra-cell.

8., according to the WTRU described in embodiment 7, wherein said set point parameter is to being positioned at Serving cell from described WTRU In up-link (UL) path loss of serving evolved Node B (e node B), and described closed loop correction factor is used for Compensate the open loop TPC related errors relevant with set point parameter.

9., according to the WTRU described in any embodiment in embodiment 7 and 8, wherein said closed loop correction factor is UL channel matter Amount information (CQI) and the function of echo signal interference-to-noise ratio (SINR).

10., according to the WTRU described in any embodiment in embodiment 7 and 9, wherein said set point parameter is for be positioned at clothes The echo signal interference-to-noise ratio (SINR) at serving evolved Node B (e node B) place in business community, described closed-loop corrected because of Number is used to compensate for the open loop TPC related errors relevant with set point parameter.

11. according to the WTRU described in any embodiment in embodiment 7 and 9, and wherein said set point parameter is for be positioned at clothes The UL interference at serving evolved Node B (the e node B) place in business community and noise power (IN₀), described closed loop correction factor quilt For compensating the open loop TPC correlated error relevant with set point parameter.

12. according to the WTRU described in any embodiment in embodiment 7 and 9, and wherein said set point parameter is for be positioned at clothes The power control margin (K) at serving evolved Node B (the e node B) place in business community, described closed loop correction factor is used for mending Repay the open loop TPC related errors relevant with set point parameter.

13. 1 kinds are used for performing the method that the transmitting power of wireless transmitter/receiver unit (WTRU) controls (TPC), the party Method includes:

(a) described WTRU based on from this WTRU to the week of the serving evolved Node B (e node B) being positioned in Serving cell Phase property up-link (UL) path loss measurement performs TPC process in open loop intra-cell；

B () described WTRU holds based on the UL channel quality information (CQI) being supplied to this WTRU by described service e node B TPC process in row closed loop community；And

C () described WTRU is produced based on by TPC process in TPC process in the described open loop intra-cell of execution and closed loop community The combination of parameter value the transmitted power level of at least one UL channel is set.

14., according to the method described in embodiment 13, also include:

D () described WTRU performs UL minizone TPC process based on interference thermal noise (IoT), wherein step (c) also includes This WTRU is based on by TPC process and minizone TPC based on IoT in TPC process, closed loop community in the described open loop intra-cell of execution The combination of parameter value produced by process arranges the transmitting power of at least one UL channel.

15. include according to the method described in any embodiment in embodiment 13 and 14, at least one UL channel wherein said UL shares data channel.

16. include according to the method described in any embodiment in embodiment 13 and 14, at least one UL channel wherein said UL controls channel.

17., according to the method described in embodiment 14, also include:

E described WTRU is implemented initial UL transmission phase by ().

18. according to the method described in embodiment 17, and wherein step (a) also includes:

(a1) the multiple open loop parameters of described service e node B signal transmission are distinguished to described WTRU, wherein open loop parameter Send or send as single synthetic parameters；And

(a2) based on downlink (DL) reference signal transmitted by service e node B and open loop parameter WTRU identified below Transmitting power P_Tx:

P_Tx=max (min (SINR_T+PL+IN₀+ K, P_max), P_min), wherein SINR_TIt is with dB as list at service e node B Position echo signal interference-to-noise ratio (SINR), PL be based on DL reference signal from service e node B to WTRU in units of dB The path loss including shadow fading, IN₀Be service e node B in units of dBm UL interference and noise power, K is For servicing the power control margin of e node B, and P_maxAnd P_minBe respectively in units of dBm for WTRU at least one The minimum and maximum transmitted power level of the transmission carried out on individual UL channel.

19. according to the method described in embodiment 17, and wherein step (d) also includes:

(d1) transmitting power based on downlink (DL) the reference signal WTRU identified below transmitted by service e node B P_Tx:

P_Tx=max (min (SINR_T+PL+IN₀+K+Δ(IoT_S), P_max), P_min), wherein SINR_TIt is at service e node B Sentence echo signal interference-to-noise ratio (SINR) that dB is unit, PL based on DL reference signal from service e node B to WTRU The path loss including shadow fading in units of dB, IN₀Be service e node B in units of dBm UL interference and make an uproar Acoustical power, K is the power control margin for servicing e node B, P_maxAnd P_minIt is WTRU is existed in units of dBm respectively The minimum and maximum transmitted power level of the transmission carried out at least one UL channel, and Δ (IoT_S) represent UL load control Step-length, this step-length is the UL interference load designator IoT of the strongest neighbor cell_SFunction.

20. according to the method described in embodiment 17, and wherein step (a) also includes:

(a1) in described WTRU performs open loop intra-cell based on path loss, TPC process is to arrange for initial UL transmission rank The transmitting power of section.

21. is UL License Info according to the method described in any embodiment in embodiment 13-20, wherein said UL CQI.

22. according to the method described in embodiment 14, and wherein step (d) also includes:

(d1) described e node B measures UL interference level；

(d2) described e node B determines whether measured UL interference level exceedes predetermined threshold；And

(d3) described e node B is rule-based or triggers broadcast interference load designator, wherein said interference load designator Whether the UL interference level measured by instruction exceedes predetermined threshold.

23. according to the method described in embodiment 22, and wherein measured UL interference level is that UL interference thermal noise (IoT) surveys Amount.

24. according to the method described in embodiment 17, and wherein step (a) and (b) perform after step (e), and step B () also includes:

(b1) WTRU calculated as below transmitting power:

P_tx=max (min (SINR_T+PL+IN₀+ K+ α f (CQI, SINR_T), P_max), P_min), wherein SINR_TIt is in service E node B sentences echo signal interference-to-noise ratio (SINR) that dB is unit, PL be based on DL reference signal from service e node B to The path loss including shadow fading in units of dB of WTRU, IN₀It is that UL in units of dBm does at service e node B Disturbing and noise power, K is the power control margin for servicing e node B, f (CQI, SINR_T) it is based on UL CQI and corresponding The closed loop correction factor of target SINR, α is weighting factor, and P_maxAnd P_minBe respectively in units of dBm for WTRU The minimum and maximum transmitted power level of the transmission carried out at least one UL channel.

25. according to the method described in embodiment 24, wherein 0≤α≤1.

26. according to the method described in any embodiment in embodiment 24 and 25, wherein said closed loop correction factor f (CQI, SINR_T) it is used to compensate for open loop TPC related errors.

27. according to the method described in any embodiment in embodiment 24-26, wherein represents at e node in view of UL CQI The SINR received at B, described closed loop correction factor f (CQI, SINR_T) it is according to the UL from service e node B by WTRU CQI feedback calculates, thus f (CQI, SINT_T)=SINR_T-E{SINR_est(CQI) } (dB), wherein SINR_est(CQI) represent Being that the SINR that e Node-B receiver arrives estimates, this estimation is then that WTRU is derived by from UL CQI feedback.

28. according to the method described in embodiment 27, wherein E{SINR_est(CQI) } represent is the estimation relative to the time SINR meansigma methods, thus:

E{SINR_est(CQI^k)=ρ E{SINR_est(CQI^k-1)}+(1-ρ)·E{SINR_est(CQI^k), wherein CQI^kGeneration The CQI that table kth receives, ρ are then averaging filter coefficient, 0≤ρ≤1.

29. 1 kinds are used for performing to launch power and control the wireless transmitter/receiver unit (WTRU) of (TPC), and this WTRU includes:

(a) receiver；

The processor of (b) and receiver electric coupling, this processor be configured to based on from this WTRU to being positioned at Serving cell In periodic uplink (UL) the path loss measurement of serving evolved Node B (e node B) perform in open loop intra-cell TPC process, and based on by described receiver from described service e Node-B receiver to UL channel quality information (CQI) perform TPC process in closed loop community；And

C the transmitter of () and processor electric coupling, this transmitter is configured to based on by performing in described open loop intra-cell In TPC process and closed loop community, the combination of parameter value produced by TPC process produces and has at least the one of transmitted power level Individual UL channel.

30. according to the WTRU described in embodiment 29, and wherein said processor is configured to perform UL based on interference thermal noise (IoT) minizone TPC process, and described transmitter be configured to based on by perform TPC process in described open loop intra-cell, In closed loop community, the combination of parameter value produced by TPC process and minizone based on IoT TPC process produces and has transmitting merit At least one UL channel of rate level.

31. include according to the WTRU described in any embodiment in embodiment 29 and 30, at least one UL channel wherein said UL shares data channel.

32. include according to the WTRU described in any embodiment in embodiment 29 and 30, at least one UL channel wherein said UL controls channel.

33. according to the WTRU described in any embodiment in embodiment 29-32, wherein said receiver be configured to receive by Service e node B is signaled to multiple open loop parameters of WTRU, and wherein open loop parameter is sent separately or as single synthesis Parameter sends, and described processor is configured to based on downlink (DL) reference signal transmitted by service e node B and opens The transmitting power P of ring parameter WTRU identified below_Tx:

P_Tx=max (min (SINR_T+PL+IN₀+ K, P_max), P_min), wherein SINR_TIt is with dB as list at service e node B Position echo signal interference-to-noise ratio (SINR), PL be based on DL reference signal from service e node B to WTRU in units of dB The path loss including shadow fading, IN₀Be service e node B in units of dBm UL interference and noise power, K is For servicing the power control margin of e node B, and P_maxAnd P_minBe respectively in units of dBm for WTRU at least one The minimum and maximum transmitted power level of the transmission carried out on individual UL channel.

34. according to the WTRU described in embodiment 30, and wherein said processor is configured to transmit based on by service e node B The transmitting power P of downlink (DL) reference signal WTRU identified below_Tx:

P_Tx=max (min (SINR_T+PL+IN₀+K+Δ(IoT_S), P_max), P_min), wherein SINR_TIt is at service e node B Sentence echo signal interference-to-noise ratio (SINR) that dB is unit, PL based on DL reference signal from service e node B to WTRU The path loss including shadow fading in units of dB, IN₀Be service e node B in units of dBm UL interference and make an uproar Acoustical power, K is the power control margin for servicing e node B, P_maxAnd P_minIt is WTRU is existed in units of dBm respectively The minimum and maximum transmitted power level of the transmission carried out at least one UL channel, and Δ (IoT_S) represent UL load control Step-length, this step-length is the UL interference load designator IoT of the strongest neighbor cell_SFunction.

35. according to the WTRU described in any embodiment in embodiment 29-34, and wherein said processor is configured to perform In open loop intra-cell based on path loss, TPC process is to arrange the transmitting power for initial UL transmission phase.

36. is UL License Info according to the WTRU described in any embodiment in embodiment 29-35, wherein said UL CQI.

37. according to the WTRU described in any embodiment in embodiment 29-36, and wherein said processor is configured to count as follows Calculation WTRU transmitting power:

P_tx=max (min (SINR_T+PL+IN₀+ K+ α f (CQI, SINR_T), P_max), P_min), wherein SINR_TIt is in service E node B sentences echo signal interference-to-noise ratio (SINR) that dB is unit, PL be based on DL reference signal from service e node B to The path loss including shadow fading in units of dB of WTRU, IN₀It is that UL in units of dBm does at service e node B Disturbing and noise power, K is the power control margin for servicing e node B, f (CQI, SINR_T) it is based on UL CQI and corresponding The closed loop correction factor of target SINR, α is weighting factor, and P_maxAnd P_minBe respectively in units of dBm for WTRU The minimum and maximum transmitted power level of the transmission carried out at least one UL channel.

38. according to the WTRU described in embodiment 37, wherein 0≤α≤1.

39. according to the WTRU described in any embodiment in embodiment 37 and 38, wherein said closed loop correction factor f (CQI, SINR_T) it is used to compensate for open loop TPC related errors.

40. according to the WTRU described in any embodiment in embodiment 37-39, wherein represents at e node B in view of UL CQI The SINR that place receives, described closed loop correction factor f (CQI, SINR_T) it is according to the UL CQI from service e node B by WTRU Feedback calculates, thus f (CQI, SINT_T)=SINR_T-E{SINR_est(CQI) } (dB), wherein SINR_est(CQI) that represent is e The SINR that Node-B receiver arrives estimates, this estimation is then that WTRU is derived by from UL CQI feedback.

41. according to the WTRU described in embodiment 40, wherein E{SINR_est(CQI) } represent is the estimation relative to the time SINR meansigma methods, thus:

E{SINR_est(CQI^k)=ρ E{SINR_est(CQI^k-1)}+(1-ρ)·E{SINR_est(CQI^k), wherein CQI^kGeneration The CQI that table kth receives, ρ are then averaging filter coefficient, 0≤ρ≤1.

42. 1 kinds are used for performing to launch power and control the evolved node B (e node B) of (TPC), and this e node B includes:

A () processor, is configured to measure UL interference level, and determines whether measured UL interference level exceedes predetermined Threshold value；With

B the transmitter of () and processor electric coupling, this transmitter is configured to rule-based or triggers broadcast interference load Designator, whether the UL interference level measured by the instruction of wherein said interference load designator exceedes predetermined threshold.

43. according to the e node B described in embodiment 42, and wherein measured UL interference level is UL interference thermal noise (IoT) Measure.

44. according to the e node B described in embodiment 42, and wherein said transmitter is configured to send echo signal with signal Interference-to-noise ratio (SINR) level SINR_TTo wireless transmitter/receiver unit (WTRU), as from this e node B to this WTRU away from From with the function of at least one in given quality requirement.

45. according to the e node B described in embodiment 44, and wherein giving quality requirement is BLER(block error rate) (BLER).

46., according to the e node B described in any embodiment in embodiment 42-45, also include:

C mapping table that () electrically connects with described processor, wherein said processor is configured to use this mapping table by mesh Mark mass value is mapped to target sinr values.

47. according to the e node B described in embodiment 46, and wherein said target quality is BLER(block error rate) (BLER).

48. according to the e node B described in any embodiment in embodiment 42-47, and wherein said transmitter is configured to generate Downlink (DL) reference signal.

49. according to the e node B described in any embodiment in embodiment 42-48, and wherein said transmitter is configured to letter Number transmission power control tolerance limit K.

50. are embedded in target SINR according to the e node B described in embodiment 49, wherein said power control margin K SINR_TIn, thus SINR_T(after embedding)=SINR_T+K(dB)。

51. according to the e node B described in any embodiment in embodiment 42-50, and wherein said processor is configured to measure Or assess total UL interference and noise level IN₀, this IN₀All subcarriers being in use or subcarrier is averagely arrived by processor In subset, and described transmitter is configured to send this IN with signal₀。

52. according to the e node B described in any embodiment in embodiment 42-51, and wherein said transmitter is configured to letter Number send maximum UL transmitted power level P_maxWith minimum UL transmitted power level P_min。

53. according to the e node B described in any embodiment in embodiment 42-52, and wherein said transmitter is configured to letter Number send UL channel quality information (CQI).

54. include UL License Info or modulation and coding according to the e node B described in embodiment 53, wherein said UL CQI Collection (MCS) information, UL CQI is initially sent for the purpose of UL link adaptation.

55. according to the e node B described in any embodiment in embodiment 42-54, and wherein said transmitter is configured to letter Number send channel quality information (CQI) mapping ruler, for CQI feedback generate.

Although inventive feature and element are described with specific combination in a preferred embodiment, but each Feature or element can be used alone in the case of other features not having described preferred implementation and element, or with or Be not combined with other features of the present invention and element various in the case of use.Method or flow chart that the present invention provides can be The computer program, software or the firmware that are performed by general purpose computer or processor are implemented, wherein said computer program, software Or firmware is to comprise in a computer-readable storage medium in the way of tangible, about the example of computer-readable recording medium Including read only memory (ROM), random access memory (RAM), depositor, buffer storage, semiconductor memory apparatus, inside The magnetizing mediums of hard disk and moveable magnetic disc etc, magnet-optical medium and CD-ROM video disc and digital versatile disc (DVD) etc Light medium.

For example, appropriate processor includes: general processor, application specific processor, conventional processors, digital signal One or more microprocessors that processor (DSP), multi-microprocessor are associated with DSP core, controller, microcontroller, Special IC (ASIC), field programmable gate array (FPGA) circuit, any integrated circuit (IC) and/or state Machine.

The processor being associated with software may be used for realizing RF transceiver, with at wireless transmitter receiver unit (WTRU), subscriber equipment, terminal, base station, radio network controller or any host computer are used. WTRU can be used in combination with the module using hardware and/or software form to implement, such as camera, camara module, video electricity Road, speaker-phone, vibratory equipment, speaker, mike, television transceiver, Earphone with microphone, keyboard, indigo plantModule, Frequency modulation (FM) radio unit, liquid crystal display (LCD) display unit, Organic Light Emitting Diode (OLED) display unit, numeral Music player, media player, video game machine module, explorer and/or any WLAN (WLAN) module.

Claims (10)

1., for performing the method launching power control TPC of wireless transmitter/receiver unit, the method includes:

Receive modulation and coded set MCS information by downlink control channel and be included in up-link License Info Dominant corrective command；

Open Loop Power control composition and close-loop power control composition is used to determine the transmitting merit for physical uplink link channel Rate level, wherein said open Loop Power control composition includes measured path loss, and described close-loop power control composition Including described corrective command and described MCS information；And

Based on described up-link License Info and determined by transmitted power level enterprising at described physical uplink link channel Row transmission.

Method the most according to claim 1, wherein, described physical uplink link channel is physical uplink link shared channels PUSCH。

Method the most according to claim 2, wherein determined by transmitted power level be additionally based upon predetermined weighting because of Count, and described predetermined weighting factor has the value from 0 to 1.

Method the most according to claim 1, wherein determined by transmitted power level based on maximum transmission power level.

Method the most according to claim 1, wherein said open Loop Power control composition is used for arranging primary power level, with And described close-loop power control composition is used for regulating described primary power level.

6. a wireless transmitter/receiver unit WTRU, including:

Receiver, is configured to receive modulation and coded set MCS information by downlink control channel and be included in up Dominant corrective command in link License Info；

Processor, is configured to use open Loop Power control composition and close-loop power control composition to determine for physical uplink chain The transmitted power level of path channels, wherein said open Loop Power control composition includes measured path loss, and described in close Ring power control composition includes described corrective command and described MCS information；And

Transmitter, this transmitter operationally couples with described processor, and this transmitter is configured to based on described up-link License Info and determined by transmitted power level be transmitted on described physical uplink link channel.

WTRU the most according to claim 6, wherein said physical uplink link channel is physical uplink link shared channels.

WTRU the most according to claim 7, wherein determined by transmitted power level be additionally based upon predetermined weighting because of Count, and described predetermined weighting factor has the value from 0 to 1.

WTRU the most according to claim 6, wherein determined by transmitted power level based on maximum transmission power level.

WTRU the most according to claim 6, wherein said open Loop Power control composition is used for arranging primary power level, And described close-loop power control composition is used for regulating described primary power level.