WO2012068952A1 - 功率控制方法和基站 - Google Patents

功率控制方法和基站 Download PDF

Info

Publication number
WO2012068952A1
WO2012068952A1 PCT/CN2011/081902 CN2011081902W WO2012068952A1 WO 2012068952 A1 WO2012068952 A1 WO 2012068952A1 CN 2011081902 W CN2011081902 W CN 2011081902W WO 2012068952 A1 WO2012068952 A1 WO 2012068952A1
Authority
WO
WIPO (PCT)
Prior art keywords
pucch
base station
subframe
ber
value
Prior art date
Application number
PCT/CN2011/081902
Other languages
English (en)
French (fr)
Inventor
李昌竹
卜邗
张宁炜
余骏
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2012546357A priority Critical patent/JP5369237B2/ja
Priority to EP11843307.7A priority patent/EP2501186B1/en
Publication of WO2012068952A1 publication Critical patent/WO2012068952A1/zh
Priority to US13/548,135 priority patent/US8737340B2/en
Priority to US14/251,347 priority patent/US8934444B2/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/20TPC being performed according to specific parameters using error rate
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/32TPC of broadcast or control channels
    • H04W52/325Power control of control or pilot channels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/16Deriving transmission power values from another channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/28TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
    • H04W52/281TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission taking into account user or data type priority

Definitions

  • the present application claims priority to Chinese Patent Application No. 201010561679.3, entitled “Power Control Method and Base Station", filed on November 26, 2010, the entire contents of In this application.
  • TECHNICAL FIELD The present invention relates to the field of communications technologies, and in particular, to a power control method and a base station.
  • PUCCH Physical Uplink Control Channel
  • LTE Long Term Evolution
  • CDMA Code Division Multiple Access
  • P CMAX is the maximum transmit power of the UE.
  • PQ PUCCH is the expected reception power level of the base station
  • PQ_PUCCH ⁇ NOMINAL PUCCH + ⁇ ⁇ UE PUCCH
  • ⁇ ⁇ NOMINAL PUCCH indicates the cell-level received power level of the PUCCH desired by the base station
  • the Po UE PUCCH is the power relative to the Po NOMINAL PUCCH Offset value.
  • PL is the estimated downlink path loss value for the UE.
  • h ( n C Qi, n HA R Q ) is a value determined by the PUCCH format
  • n CQI is the number of information bits of the channel quality indicator (CQI)
  • n HA RQ is the number of information bits of HARQ.
  • a F PUCCH ( F ) is the power offset value between the different transmission formats of the PUCCH relative to the reference format ( DCI FORMAT 1 A ).
  • g ( i ) is the inner loop power control correction value, which is used to compensate the error of the initial power setting of the open loop power control.
  • g(i) g(i - l) + ⁇ ⁇ H (i- kJ , where cOT is the transmission power control command word on the subframe (Transmit
  • the UE can calculate the PUCCH transmit power in the subframe i by using the above formula, but when the UE calculates the subframe i
  • the PUCCH transmission power is not accurate, so the effect of suppressing network interference caused by increasing the PUCCH transmission power is not good.
  • An aspect of the present invention provides a power control method, including:
  • the base station acquires an INPUCCH (i), where the INPUCCH(i) is an average interference noise power of a radio resource of a physical uplink control channel PUCCH carried by the base station in a subframe i;
  • the base station sends a parameter P 0 NOMINAL PUCCH 1 A for performing power control in subframe i. If the relative difference between the INPUCCH ( i ) and the power reference value IN PUCCH — REF is greater than the threshold IN TH — PUCCH , The value of the ⁇ NOMINAL PUCCH ( i ) is the sum of the SINRo NOMINAL PUCCH and the INPUCCH of the subframe i, and the SINRo_NOMINAL PUCCH is the lowest level service used by the base station according to the UE located at the cell edge.
  • Another aspect of the present invention also provides a power control method, including:
  • the base station acquires error control channel PUCCH physical uplink user equipment UE in subframe i is the rate of the BER (i); the base station transmits transmission power control command word pre: OT (- A m) , m is a value from 0 to Ml , M is an integer greater than 1; where P[/COT ( - A M ) takes one of the following values:
  • ⁇ PUCCH 0' - ) S PUCCH 0' ⁇ k m) + ⁇ IN ⁇ QCI (/) , the ASINR UE — Q CI ( i ) is the first signal used by the UE in subframe i Disturbance noise ratio bias;
  • the ASINRo FFSET (i) is The second signal interference noise ratio offset used by the UE in subframe i; or
  • ⁇ ′ H (i _kj takes the same value as ⁇ H (i _kJ; the ⁇ OT ⁇ J is the subframe ik m acquired by the base station) Transmission power control command word.
  • Another aspect of the present invention also provides a base station, including:
  • a first acquiring unit configured to acquire an INPUCCH (i), where the IN PUCCH (i) is an average interference noise power of a radio resource of a physical uplink control channel PUCCH carried by the base station in the subframe i;
  • the first transmitting unit is configured to send a parameter P for performing power control in the subframe i. NOMINAL PUCCH ⁇ 1 where, if the relative difference between the INPUCCH ( i ) and the power reference value IN PUCCH — REF is greater than the threshold IN TH — PUCCH , the value of the Po NOMINAL PUCCH ( i ) is SINRo NOMINAL PUCCH and the subframe both i and when the INPUCCH, the SINRo- NOMINAL PUCCH of the first acquiring unit according to a minimum at the cell edge or the like used by the UE The first signal interference noise ratio of the PUCCH acquired by the level service and the first uplink control information format; otherwise,
  • NOMINAL The value of PUCCH ( i ) and the parameter P for power control when sub-frame i-1 is performed. — NOMINAL—The value of PUCCH(i-1) is the same.
  • Another aspect of the present invention also provides a base station, including:
  • a second acquiring unit configured to acquire a bit error rate BER (i) of the physical uplink control channel PUCCH of the user equipment UE in the subframe i;
  • a second sending unit configured to send a transmission power control command word ⁇ A m ), the value of m is from 0 to Ml, and M is an integer greater than 1; wherein, the value of P[/COT ( - A m ) is Any of the following:
  • S PUCCH (i ⁇ k m ) S PUCCH (i ⁇ k m ) + ASIN ⁇ QCI (i) , the ASINR UE — QCI (i) is a first signal interference noise ratio offset used by the UE in subframe i;
  • the ASINRo FFSET (i) is The second signal interference noise ratio offset used by the UE in subframe i; or
  • ⁇ ′ H (i _kj takes the same value as ⁇ H (i_kJ; the pre:OT ( ⁇ A m ) is the second acquisition unit)
  • the transmission power control command word when the obtained subframe ik m is obtained.
  • the base station can send more precise parameters to the UE, so that the PUCCH transmit power of the subframe i calculated by the UE is more accurate, and helps to further reduce network interference caused by increasing PUCCH transmit power.
  • FIG. 1 is a schematic flow chart of a power control method according to an embodiment of the present invention
  • FIG. 2 is a schematic flow chart of a power control method according to another embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a base station according to another embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a base station according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a base station according to another embodiment of the present invention. Mode for carrying out the invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • i is placed in parentheses and is a part of the parameter X, that is, the form of X ( i ), indicating the case where the parameter X is in the subframe i.
  • P PUCCH indicates the PUCCH transmission power of the UE
  • P PUCCH ( i ) indicates the PUCCH transmission power of the UE at the subframe i.
  • the base station in the embodiment of the present invention may be any access network device that performs power control on the UE, such as an evolved base station (e B , evolved Node base station) in an LTE system or an LTE-Advance system.
  • an embodiment of the present invention provides a power control method.
  • the base station may send a parameter related to the P PUCCH ( i ) of the UE to the UE in the cell under the control of the base station, for example,
  • the P Q NOMINAL PUCCH sent by the base station to the UE is more accurate. Therefore, the UE obtains the accurate ⁇ ⁇ _ PUCCH according to the accurate P 0 — NOMINAL — PUCCH , so that the finally obtained Pp UCC H ( i ) More precise.
  • This embodiment may include the following steps.
  • the base station determines an uplink control information format (hereinafter referred to as a first uplink control information format) of a PUCCH corresponding to a lowest level service used by a UE located at a cell edge and a lowest level service used by the UE.
  • a first uplink control information format an uplink control information format of a PUCCH corresponding to a lowest level service used by a UE located at a cell edge and a lowest level service used by the UE.
  • the lowest level service used by the UE located at the edge of the cell may be set according to market demand. For example, VoIP, Internet, or other services as determined by the telecommunications carrier.
  • the first uplink control information format is set according to the type of control signaling carried by the PUCCH, and may be one of FORMAT la , FORMAT lb , FORMAT 2 , FORMAT 2a, and FORMAT 2b.
  • the base station may determine whether the UE is located at the cell edge according to the geographic location of the UE, and may determine whether the UE is located at the cell edge according to the radio channel condition. For example, the UE whose radio channel condition in the network is bad to a certain extent is determined as the UE located at the cell edge. For example, in mobile communication, UEs located at 5% position and below in the Cumulative Distribution Function (CDF) curve are UEs located at the cell edge. If there are multiple UEs located at the cell edge, the base station may acquire only the lowest level service and the first uplink control information format used by one of the UEs. Optionally, the UE selected by the base station is the UE with the lowest CDF curve, that is, the UE with the worst channel condition.
  • CDF Cumulative Distribution Function
  • the base station acquires a first signal interference noise ratio SINRo NOMINAL PUCCH of the PUCCH according to a lowest level service used by the UE located at the edge of the cell and a first uplink control information format.
  • SINRo- NOMINAL puccH is used to guarantee the service shield of the lowest level service used by the UE.
  • the station expects to use the signal interference noise ratio that can be achieved by the PUCCH of the first uplink control information format, and the unit can be dB.
  • the service level can be indicated by a QoS class identifier (QCI).
  • the base station may be controlled according to the lowest-level traffic information format and to generate a first uplink SINRo- NOMINAL PUCCH, so that the above-described operations correspond to the lowest level SINRo- NOMINAL PUCCH demodulation generated satisfies a first uplink control information Demodulation threshold requirements for feedback information (such as ACK or NACK) carried by the formatted PUCCH.
  • a first uplink control information Demodulation threshold requirements for feedback information (such as ACK or NACK) carried by the formatted PUCCH.
  • the demodulation threshold is any value from 10 dB to 30 dB.
  • the base station periodically sends a parameter related to the P PUCCH ( i ) of the UE to the UE, that is, the UE updates the P PUCCH ( i ) according to the update period, the base station at a certain time before the arrival of the next update period, The acquisition of the first signal interference noise ratio is completed.
  • the base station acquires an INPUCCH (i), that is, an average interference noise power of a radio resource (RB, Radio Bearer) carrying the PUCCH in the subframe i.
  • INPUCCH an average interference noise power of a radio resource (RB, Radio Bearer) carrying the PUCCH in the subframe i.
  • the unit of INPUCCH ( i ) can be dBm.
  • the RB carrying the PUCCH includes the RB of the PUCCH carrying the current uplink control information format.
  • the base station determines whether a relative difference between the INPUCCH (i) and the power reference value IN PUCCH — REF is greater than a threshold IN TH — PUCCH . If yes, go to step 105; if no, go to step 106.
  • the units of INPUCCH-REF and INTH-PUCCH can be dBm.
  • the power reference value INPUCCH REF in this step may be a preset value of the base station, or may be a value determined by the base station according to the average interference noise power of the RB carrying the PUCCH of the UE in a certain subframe.
  • the base station may preset the threshold INTH-PUCCH, or perform test evaluation under channel conditions to obtain IN TH — PUCCH .
  • the value of the INTH-PUCCH obtained by the base station may be different.
  • IN TH — PUCCH takes any value from -121 dBm to -91 dBm.
  • the base station can learn that: when the update period arrives, if the currently measured INPUCCH ( i ) changes significantly with respect to the reference IN value, the base station performs step 105 to adjust ⁇ NOMINAL PUCCH.
  • "11" means taking an absolute value.
  • the base station can know that: with respect to subframe i-1, the cell spurt noise variation at subframe i is small, and the base station performs step 106 to maintain P. – NOMINA L—PUCCH is unchanged, and the UE's anti-interference capability can be changed. The performance of the UE will not be reduced, and the interference condition of the entire network will not be changed.
  • the base station sends P 0 NOMINAL PUCCH (i) to the UE, that is, the parameter P of the UE in the subframe i. NOMINAL PUCCH.
  • ⁇ —NOMINAL—PUCCH ( i ) SINRo—NOMINAL— PUCCH + INpuCCH ( i ).
  • the base station sends ⁇ NOMINAL PUCCH (i) to all UEs in the cell through a broadcast channel.
  • the base station may perform step 104 of the embodiment in an update period of each PUCCH transmit power, and the base station is modified to change the INPUCCH_REF used in the current judgment process to the INPUCCH after the judgment process of the previous step 104.
  • the base station will use the modified INPUCCH_REF (ie, IN PUCCH — REF with the value of IN PUCCH (i) as the current power reference value in the subsequent judgment of step 104.
  • the base station INpuCCH REF is increased by this method, thus contributing to increasing the UE in the next one thousand anti-interference ability INPUCCH of (i) update cycle. If the modified value INPUCCH- REF IN PUCCH is smaller than before modification - REF, the base station is reduced by this method INpuCCH REF, thereby facilitating a reduction next one thousand INPUCCH network interference when (i) update cycle.
  • the base station will be P. NOMINAL PUCCH (i) is transmitted to all UEs in the cell through a broadcast channel.
  • the base station may determine the PQ_NOMINAL_PUCCH according to the SINRo_NOMINAL_PUCCH and the INPUCCH(i) and send the same to the UE.
  • This P 0 NOMINAL PUCCH ( i ) is more accurate than the prior art.
  • the P PUCCH (i) derived by the UE can be made more accurate, thereby ensuring that the PUCCH channel of each UE can ensure the reliability of signaling transmission in the case of code division multiplexing in the cell under the control of the base station.
  • P PUCCH (i) min ⁇ P CMAX , Po-PUCCH + PL + h ( n CQI , n HAR Q ) + A determined by the UE when the UE accesses the scene of a certain cell under the control of the base station.
  • F — PUCCH ( F ) ⁇ . Therefore, the UE receives it according to The accuracy of NO ⁇ NOMINAL PUCCH' determines the exact Po PUCCH' and thus the accurate open loop power control of the PUCCH transmit power according to the above formula.
  • the PUCCH in this embodiment may carry feedback information (such as ACK, NACK, and the like), and the feedback information is downlink data carried by the Physical Downlink Share Channel (PDSCH) corresponding to the PUCCH. related. Therefore, when the cell interference increases, the base station can improve the PUCCH transmission power of the UE, thereby ensuring that the feedback information is correctly decoded, and the erroneous retransmission of the downlink data carried by the PDSCH is avoided. Since the base station is based on the SINRo- NOMINAL PuccH in the process of improving the PUCCH transmission power of the UE, the base station can ensure the normal transmission of the lowest-level service used by the UE located at the cell edge. At the same time, minimize network interference.
  • ACK Physical Downlink Share Channel
  • step 102 is performed between step 104 and step 105, that is, the base station sequentially performs steps 101, 103, and 104, and then sequentially performs step 102 according to the judgment result of 104. 105, or perform step 106.
  • steps 101 and 102 are both performed between step 104 and step 105, that is, the base station sequentially performs steps 103 and 104, and then sequentially performs step 101 according to the determination result of 104. , 102 and 105, or execute 106.
  • the step of acquiring INPUCCH(i) need not be performed, and the power of the base station can be saved.
  • the base station can transmit whether it is an FDD system or a TDD system.
  • the base station may send a parameter related to the P PUCCH ( i ) of the UE to the intra-cell UE under the control of the base station, for example,
  • g(i) g(i - ⁇ > + ⁇ SH (i - k m ) yields g ( i ).
  • the ⁇ pre:OT transmitted by the base station to the UE is more accurate, and therefore, the UE is accurate according to The accurate g ( i ) is obtained, which finally makes the P PUCCH ( i ) more accurate.
  • This embodiment may include the following steps.
  • the base station acquires an uplink control information format (hereinafter referred to as a second uplink control information format) of the PUCCH corresponding to the highest-level service used by the UE at a certain time i and the highest-level service used by the UE.
  • a second uplink control information format an uplink control information format of the PUCCH corresponding to the highest-level service used by the UE at a certain time i and the highest-level service used by the UE.
  • the base station can acquire the terminal identifier of any online UE by using the prior art, and the most used by the UE.
  • the uplink control information format of the PUCCH may be any one of a PUCCH format la, a PUCCH format lb, a PUCCH format 2, a PUCCH format 2a, and a PUCCH format 2b.
  • the highest level service used by the UE refers to the highest level service used by the UE at a certain moment. For example, if the UE starts to use a service at a certain time, and the level of the service is higher than other services that the UE is using, the base station can obtain the uplink control information format of the PUCCH corresponding to the service and the service.
  • the base station acquires a second signal interference noise ratio SINRo UE PUCCH MAX, 1 of the PUCCH according to the highest level service and the second uplink control information format used by the UE at the time i.
  • SINRo- UE MAX is expressed as the amount of the shield to ensure the highest level of business service used by the UE, the base station can achieve the desired preclude the PUCCH control signal format information with a second one thousand uplink interference noise ratio, the unit may be a dB.
  • the base station periodically sends a parameter related to the P PUCCH ( i ) of the UE to the UE, that is, the UE updates the P PUCCH ( i ) according to the update period, the base station at a certain time before the arrival of the next update period, The acquisition of the second signal interference noise ratio is completed.
  • the base station may control information format according to the highest level of service and to generate a second uplink SINRo UE PUCCH MAX 'that is above the highest level of service corresponding to the generated SINRo- UE MAX satisfy a second uplink demodulation Demodulation threshold requirements for feedback information (such as ACK or NACK) carried by the PUCCH of the control information format.
  • a second uplink demodulation Demodulation threshold requirements for feedback information such as ACK or NACK
  • the demodulation threshold is any value from 10 dB to 30 dB.
  • M is an integer greater than 1).
  • the base station obtains a total of M transmission power control command words.
  • n For example, in a frequency division duplex (FDD) system, k. Can be taken as 4, M can be taken as 1.
  • the Downlink association set index formed in the Time Division Duplex (TDD) system can be seen in Table 1 below. Up-down subframe n
  • the base station determines a size relationship between BER (i) and BER PUCC H — REF, where BER (i) represents a bit error rate in subframe i, and BER PUCC H — REF is a bit error rate reference value. If BER (i) is greater than BER PUCCH — REF, step 205 is performed; if BER (i) in subframe i is less than BER PUCC H — REF, step 206 is performed; if subframe i is equal to BER PUCCH — REF , then step 207 is performed.
  • the BER (i) may be a bit error rate of the PUCCH of the UE obtained by the base station according to the prior art in the subframe i.
  • BER (i) and BERp UCC H—REF can be a percentage.
  • the base station can preset the BER PUCC H-REF, and can also perform test evaluation under channel conditions to obtain the BER PUCC H-REF.
  • the base station sets the BER PUCC H_REF according to the demodulation success rate of the feedback data carried by the PUCCH, and the service of the physical downlink shared channel PDSCH corresponding to the feedback data is the highest level service.
  • the BER PUCC H_REF obtained by the base station may have different values.
  • BER PUCC H- RE takes any value from 0.1% to 15%.
  • the base station can know that it is necessary to increase the PUCCH transmission power of the UE to reduce the BER. For example, the base station performs step 205.
  • the base station can know that the PUCCH transmission power of the UE is to be reduced in order to reduce network interference. For example, the base station performs step 206.
  • the base station can know that the UE's anti-interference capability and performance are not reduced without changing the PUCCH transmission power of the UE. For example, the base station performs step 207.
  • the first signal is the interference noise ratio offset, which is used to increase the transmission power.
  • ASINRUE QCI (i) SINRo UE PUCCH MAX (i) - SINRo NOMINAL PUCCH.
  • SINRo- NOMINAL PUCCH on the above-described embodiments described with reference to SINRo- NOMINAL PUCCH may be, for example, the base station can be acquired by performing steps 101-102 above-described embodiments of the SINRo- NOMINAL PuccH, where no Like described.
  • the ASINR UE QCI (i) can be expressed as a service shield that guarantees the highest level of service used by the UE, and the base station expects to use the signal interference noise ratio that can be achieved by the PUCCH of the second uplink control information format and to ensure that the UE uses the signal.
  • the base station expects to use the relative offset between the signal interference noise ratios achievable by the PUCCH of the first uplink control information format, and the offset can thus reflect the requirements of different levels of services. Therefore, the base station can ensure that the PUCCH channel of each UE can ensure the reliability of signaling transmission under the condition of code division multiplexing while improving the PUCCH transmission power of the UE.
  • the base station sends H (i _kJ , where,
  • S' PUCCH (i -k m ) S PUCCH (i -k - ASINR,, ⁇ (f) , ASINROFFSET ( i ) represents the second signal interference noise ratio offset used by the UE in subframe i, To reduce the transmission power.
  • the base station sets the initial value ASINRQFFSET and adjusted according to actual situation and execute the next PUCCH power control (e.g., step 206) once, preclude ASINRo FFSET after regulating.
  • the initial value of ASINROFFSET can be ldB, and the base station adjusts in steps of ldB.
  • the base station may be embodied for adjusting ASINROFFSET slow down fast rise, i.e., when the base station increases the transmission power, ASINRUE QCI values used in the step preclude longer than when the base station decreases the transmit power, ASINRo FFSET preclude the values
  • the step size used is 2dB as in the former and ldB in the latter.
  • the base station can preset ASINROFFSET, and can also perform test evaluation under channel conditions to obtain ASINROFFSET. It can be understood by those skilled in the art that the base station evaluates different ASINROFFSET according to different scenarios and/or different channel conditions.
  • ASINRo FFSET value when the PUCCH BER can meet the requirements, to achieve a reduction in the transmit power of the UE corresponding to the base station, thus ensuring reduced interference neighboring one thousand sacrificing performance of the UE.
  • the base station sends P[/COT ( -m ) to the UE, where p[/COT ( -m ) takes the same value as P[ ; COT '-. Since the base station in this embodiment can transmit ⁇ ' H (i - k m ) by transmitting ⁇ H ( - ) in the prior art, the base station in this step actually obtains the step 203. ⁇ H ( - k m ) is sent to the UE.
  • the base station sends a P[/COT ( ⁇ ) to the UE by using a Physical Downlink Control Channel (PDCCH).
  • the base station first adjusts the obtained pre:OT (-t m ), and then sends the adjusted ⁇ ' H (i - k m ) to the UE, because ⁇ ' H (i - ⁇ Compared with the ⁇ H (/ - k m ) obtained by the base station, the P PUCCH (i) obtained by the UE can be made more accurate, thereby ensuring that the PUCCH channel of each UE is in the cell under the control of the base station. The reliability of signaling transmission can be guaranteed in the case of code division multiplexing.
  • the UE when the UE is in the online state, the UE can perform the open loop power control of the PUCCH transmit power by using the existing technology, and perform the closed loop power control of the PUCCH transmit power by using the method provided in this embodiment.
  • the base station can transmit for the UE to derive g (i), thereby implementing closed loop power control. Therefore, the above embodiment is applicable to both the FDD system and the TDD system.
  • the base station may send parameters related to P PUCCH ( i ) of the UE to the intra-cell UE under the control of the base station, for example, P 0 NOMINAL PUCCH, P Q — UE PUCCH and .
  • the base station adjusts P 0 NOMINAL PUCCH (such as steps 101-105 or 106) and ⁇ (such as steps 201-205 or 206 or 207) by the method provided by the foregoing embodiment of the present invention, so that the base station sends ⁇ _NOMINAL to the UE.
  • PUCCH and ⁇ are more accurate, so the UE derives accurateness based on the exact P 0 — NOMINAL — PUCCH
  • ⁇ —PUCCH based on the exact PreOT, yields the exact g (i), making the resulting P PUCCH (i) more accurate.
  • steps 101-105 or 106, and steps 201-205 or 206 or 207 are respectively performed, and the execution order of the above steps is not required to be limited.
  • the base station 30 can include a first obtaining unit 301 and a first transmitting unit 302.
  • the first obtaining unit 301 is configured to acquire the INPUCCH (i), where the IN PU CCH (i) is the average interference noise power of the radio resource of the physical uplink control channel PUCCH carried by the base station in the subframe i.
  • the first sending unit 302 is configured to send a parameter P 0 NOMINAL PUCCH, 1 for power control when performing subframe i, where if the first acquiring unit 301 acquires the INPUCCH ( i ) and the power reference value IN PUCCH — REF relative difference between the threshold value is greater than iN TH PUCCH 'is ⁇ NOMINAL PUCCH (i) is the value of SINRo NOMINAL PUCCH subframe i INPUCCH and the sum of the two, SINRo- NOMINAL PUCCH first obtaining unit 301 may be located in the cell according The first signal interference noise ratio of the PUCCH acquired by the lowest level service used by the edge UE and the first uplink control information format; otherwise, the value of P Q NOMIN AL - PUCCH ( i ) is used to perform subframe i- 1 hour power control parameters ⁇ NOMINAL PUCCH ( i-1 ) has the same value.
  • the base station 30 further includes: a first processing unit 303, configured to determine, by the first acquiring unit 301,
  • the first transmitting unit 302# is according to the first processing unit.
  • the judgment result provided by 303 sends P 0 NOMINAL PUCCH ( i ).
  • the first uplink control information format is set according to a type of control signaling carried by the PUCCH, and may be one of FORM AT la, FORMAT lb, FORMAT 2, FORMAT 2a, and FORMAT 2b.
  • SINRo- NOMINAL - puccH shield is to ensure that the amount used by the UE lowest level of service, the signal reaches the PUCCH control information format with a first base station the uplink interference and noise ratio desired preclude one thousand.
  • the base station in this embodiment is used in a scenario in which the UE accesses a certain cell under the control of the base station, and the UE determines at this time.
  • PPUCCH ( i ) min ⁇ P CM AX ' PO—PUCCH + PL + h ( n CQ i, n HA RQ ) + A F — PUCCH ( F ) ⁇ . Therefore, the UE determines an accurate P Q — PUCCH according to the accurate P Q NOMINAL PUCCH received by the first transmitting unit 302, thereby performing accurate open loop power control of the PUCCH transmission power according to the above formula.
  • the base station in this embodiment can be used in the method provided by the embodiment shown in FIG. 1, that is, the operations performed by the base station in the method are performed, and the parameters and scenarios used by the base station in this embodiment can also be referred to. The description in this method will not be repeated here. Moreover, the base station in this embodiment is applicable to both the FDD system and the TDD system.
  • the base station 40 can include a second acquisition unit 401 and a second transmission unit 402.
  • the second obtaining unit 401 is configured to acquire a bit error rate BER ( i ) of the physical uplink control channel PUCCH when the user equipment UE is in the subframe i.
  • the second sending unit 402 is configured to send a transmission power control command word pre:OT ( -m ), where m is a value from 0 to M-1, and M is an integer greater than 1.
  • ⁇ ' H (i - k can be any of the following:
  • ⁇ ′ H (i ⁇ k m ) ⁇ H (i ⁇ k m ) ⁇ ASINR ⁇ , ASINROFFSET ( i ) is the UE in the sub
  • the second signal of the frame i is used to offset the noise ratio; or
  • ASINRUE QCI (i) SINRo UE PUCCH MAX (i) - SINRo NOMINAL PUCCH.
  • SINRo- NOMINAL PuccH reference may be made to the description of SINRo- NOMINAL PuccH in the embodiment shown in FIG. 3, and details are not described herein again.
  • the SINRo UE PUCCH MAX ( i ) is the second signal interference noise ratio of the PUCCH acquired by the second obtaining unit 401 according to the highest level service used by the UE at the time i and the second uplink control information format, SINRo — UE MAX is for To ensure the service shield of the highest level of service used by the UE, the base station expects to use the signal interference noise ratio achieved by the PUCCH of the second uplink control information format.
  • the second obtaining unit 401 is further configured to acquire the highest-level service and the second uplink control information format used by the UE at the time i.
  • the second acquiring unit 401 acquires the highest level when the UE starts using the highest-level service. Service and second uplink control information format.
  • the base station in this embodiment is used in the scenario where the UE is in the online state.
  • the UE can use the existing technology to perform open loop power control of the PUCCH transmit power, and use the method provided in this embodiment to perform closed loop power of the PUCCH transmit power. control.
  • the base station 40 further includes: a second processing unit 403, configured to determine a relationship between a BER (i) acquired by the second obtaining unit 401 and a bit error rate reference value BER PUCCH — REF , and provide a determination result to the The second transmitting unit 402.
  • the second sending unit 402 sends 3 PUCC HQ - k ⁇ according to the determination result provided by the second processing unit 403.
  • the base station in this embodiment can be used in the method provided in the embodiment shown in FIG. 2, that is, the operations performed by the base station in the method are performed, and the parameters and scenarios used by the base station in this embodiment can also be referred to. The description in this method will not be repeated here. Moreover, the base station in this embodiment is applicable to both the FDD system and the TDD system.
  • another embodiment of the present invention provides a base station 50, which may include a third obtaining unit 501 and a third sending unit 502.
  • the third obtaining unit 501 includes the first acquiring unit 301 in the base station 30 and the second obtaining unit 401 in the base station 40
  • the third sending unit 502 includes the first one of the base stations 30 provided in the foregoing embodiment.
  • the base station 50 further includes a third processing unit 503.
  • the third processing unit 503 includes a first processing unit 303 of the base station 30 and a second processing unit 403 of the base station 40 provided by the above embodiments.
  • the P Q — NOMINAL puccH and ⁇ Pre: OT sent by the base station to the UE provided by this embodiment are more accurate, therefore, the UE root According to the exact P 0 —NOMINAL_PUCCH, the accurate P0_PUCCH is obtained, and according to the accurate g ( i ), the final PPUCCH ( i ) is more accurate.
  • the base station in this embodiment is applicable to both the FDD system and the TDD system.

Landscapes

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

Description

功率控制方法和基站 本申请要求于 2010年 11月 26 日提交中国专利局、 申请号为 201010561679.3、 发 明名称为"功率控制方法和基站 "的中国专利申请的优先权, 其全部内容通过引用结合在 本申请中。 技术领域 本发明涉及通信技术领域, 具体涉及功率控制方法和基站。 发明背景 长期演进技术( LTE, Long Term Evolution )的物理上行控制信道( PUCCH, Physical Uplink Control Channel )釆用码多分址( CDMA, Code Division Multiple Access )技术。 由于 CDMA技术是自千扰系统, 当同频千扰达到一定程度时, 会影响 PUCCH对所承 载的信息的解调成功率。 提高用户终端 (UE, User Equipment ) 的 PUCCH发射功率是 增加 PUCCH的解调成功率的一种方法。
例如, UE在子帧 ( Subframe ) i时的 PUCCH发射功率用 PPUCCH ( i )表示, PPUCCH ( i ) =min{ PCMAX , PO_PUCCH+ PL + h ( nCQI, nHARQ ) +AF_PUCCH ( F ) + g ( i ) }。 其中,
PCMAX为 UE 最大发射功率。 PQ PUCCH为基站期望的接收功率水平, 并且, PQ— PUCCH = Ρθ NOMINAL PUCCH + Ρθ UE PUCCH, Ρθ NOMINAL PUCCH表示基站期望的 PUCCH的小区级接收 功率水平, Po UE PUCCH为相对于 Po NOMINAL PUCCH的功率偏置值。 PL为 UE估计的下行 路径损耗值。 h ( nCQi, nHARQ )是一个由 PUCCH格式决定的值, nCQI为信道盾量指示 ( channel quality indicator, CQI )的信息比特数, nHARQ为 HARQ的信息比特数。 AF PUCCH ( F )为 PUCCH不同的传输格式相对于参考格式( DCI FORMAT 1 A )之间的功率偏置 值。 g ( i ) 为内环功控校正值, 用于补偿开环功控的初始功率设置的误差,
-1
g(i) = g(i - l) +∑ δ H (i— kJ , 其中 cOT为子帧上的传输功率控制命令字( Transmit
m=0
Power Control command, TPC command )。
现有技术中, UE在接收到 PQ—NOMINAL puccH , PQ— UE— PUCCH和 Pre OT之后, 通过上述 公式可以计算出子帧 i时的 PUCCH发射功率,但 UE计算出的子帧 i时的 PUCCH发射 功率并不精确, 因此抑制由于提高 PUCCH发射功率导致的网络千扰的效果并不好。 发明内容
本发明的一方面提供一种功率控制方法, 包括:
基站获取 INPUCCH ( i ), 所述 INPUCCH ( i )为所述基站在子帧 i时承载的物理上行控制 信道 PUCCH的无线资源的平均千扰噪声功率;
所述基站发送用于进行子帧 i时的功率控制的参数 P0 NOMINAL PUCCH 1 A 其中, 如 果 INPUCCH ( i ) 与功率基准值 INPUCCHREF之间的相对差值大于阈值 INTHPUCCH, 则所述 Ρθ NOMINAL PUCCH ( i ) 的取值为 SINRo NOMINAL PUCCH和子帧 i时的 INPUCCH两者之和, 所述 SINRo— NOMINAL PUCCH为所述基站按照位于小区边缘的 UE所使用的最低等级业务和第一 上行控制信息格式获取的 PUCCH的第一信号千扰噪声比; 否则, P0 NOMINAL PUCCH 1 ) 的取值与用于进行子帧 i-1时的功率控制的参数 P0 NOMINAL PUCCH (i-i)的取值相同。
本发明的另一方面还提供一种功率控制方法, 包括:
基站获取用户设备 UE在子帧 i时的物理上行控制信道 PUCCH的误码率 BER ( i ); 所述基站发送传输功率控制命令字 pre:OT ( - Am) , m取值为从 0至 M-l , M为大于 1 的整数; 其中, P[/COT ( - AM)的取值为以下任一种:
如 果 所 述 BER ( i ) 大 于 误 码 率 基 准 值 BERPUCCH_REF , 则
^ PUCCH 0' - ) = SPUCCH 0' ~ km) + ^ IN^ QCI (/) , 所述 ASINRUE— QCI ( i ) 为所述 UE在子帧 i 时釆用的第一信号千扰噪声比偏置;
如 果 所 述 BER ( i ) 小 于 BERPUCCH— REF , 则 δ' H (i - km) = δ H (i -km) - ASINR,,^ (i) , 所述 ASINRoFFSET ( i ) 为所述 UE在子帧 i 时釆用的第二信号千扰噪声比偏置; 或者,
如果所述 BER ( i ) 等于 BERPUCCHREF, 则 δ' H(i _kj的取值与 δ H(i _kJ的 取值相同; 所述 ^OT -^J为基站获取到的子帧 i-km时的传输功率控制命令字。
本发明的另一方面还提供一种基站, 包括:
第一获取单元, 用于获取 INPUCCH ( i ), 所述 INPUCCH ( i )为基站在子帧 i时承载的物 理上行控制信道 PUCCH的无线资源的平均千扰噪声功率;
第一发送单元, 用于发送用于进行子帧 i时的功率控制的参数 P。 NOMINAL PUCCH ^ 1 其中, 如果 INPUCCH ( i ) 与功率基准值 INPUCCH— REF之间的相对差值大于阈值 INTH— PUCCH , 则所述 Po NOMINAL PUCCH ( i )的取值为 SINRo NOMINAL PUCCH和子帧 i时的 INPUCCH两者之和, 所述 SINRo— NOMINAL PUCCH为所述第一获取单元按照位于小区边缘的 UE所使用的最低等 级业务和第一上行控制信息格式获取的 PUCCH的第一信号千扰噪声比; 否则,
Ρθ— NOMINAL— PUCCH ( i )的取值与用于进行子帧 i- 1时的功率控制的参数 P。— NOMINAL— PUCCH(i- 1) 的取值相同。
本发明的另一方面还提供一种基站, 包括:
第二获取单元,用于获取用户设备 UE在子帧 i时的物理上行控制信道 PUCCH的误码 率 BER ( i );
第二发送单元, 用于发送传输功率控制命令字^^ Am), m取值为从 0至 M-l, M为大于 1的整数; 其中, P[/COT( - Am)的取值为以下任一种:
如 果 所 述 BER ( i ) 大 于 误 码 率 基 准 值 BERpUCCH— REF , 则 SPUCCH (i -km) = SPUCCH (i -km) + ASIN^ QCI (i) , 所述 ASINRUEQCI ( i ) 为所述 UE在子帧 i 时釆用的第一信号千扰噪声比偏置;
如 果 所 述 BER ( i ) 小 于 BERPUCCH— REF , 则 δ' H (i -km) = δ H (i -km)- ASINR,,^ (i) , 所述 ASINRoFFSET (i) 为所述 UE在子帧 i 时釆用的第二信号千扰噪声比偏置; 或者,
如果所述 BER ( i ) 等于 BERPUCCHREF, 则 δ' H(i _kj的取值与 δ H(i_kJ的 取值相同; 所述 pre:OT( -Am)为所述第二获取单元获取到的子帧 i-km时的传输功率控制 命令字。
在本发明实施例中, 基站可以发送给 UE更加精确的参数, 从而使 UE计算出的子帧 i时的 PUCCH发射功率更加精确, 并有助于进一步降低由提高 PUCCH发射功率导致的网 络千扰。 附图简要说明 图 1是本发明的一个实施例提供的一种功率控制方法的流程示意图;
图 2是本发明的另一个实施例提供的一种功率控制方法的流程示意图;
图 3是本发明的另一个实施例提供的一种基站的结构示意图;
图 4是本发明的另一个实施例提供的一种基站的结构示意图;
图 5是本发明的另一个实施例提供的一种基站的结构示意图。 实施本发明的方式 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完 整地描述, 显然, 所描述的实施例仅是本发明的一部分实施例, 而不是全部的实施例。 基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所 有其他实施例, 都属于本发明保护的范围。
本发明实施例中, 将 i放在括号中并作为参数 X的一部份, 即 X ( i ) 的形式, 表示 该参数 X在子帧 i时的情况。 例如, PPUCCH表示 UE的 PUCCH发射功率, 则, 用 PPUCCH ( i ) 表示 UE在子帧 i时的 PUCCH发射功率。本发明实施例中的基站可以是对 UE进行功率控制 的任何接入网设备,例如 LTE系统或 LTE- Advance系统中的演进基站( e B , evolved Node base station )。
请参阅图 1 , 本发明的一个实施例提供了一种功率控制方法。 本实施例中, 基站可 以向该基站控制下的小区内的 UE发送与该 UE的 PPUCCH ( i ) 相关的参数, 例如
Ρθ NOMINAL PUCCH和 Ρθ UE PUCCH。 与现有技术相比, 基站发送给 UE的 PQ NOMINAL PUCCH更加 精确, 因此, UE根据精确的 P0— NOMINAL— PUCCH得出精确的 Ρθ— PUCCH , 使最终得出的 PpUCCH ( i ) 更加精确。 本实施例可以包括如下步骤。
101、 基站确定位于小区边缘的 UE所使用的最低等级业务和上述 UE所使用的最低 等级业务对应的 PUCCH的上行控制信息格式(以下筒称第一上行控制信息格式)。
其中, 位于小区边缘的 UE所使用的最低等级业务可以是根据市场需求而设定。 例 如, 由电信运营商确定的 VoIP、上网或其它业务。 第一上行控制信息格式是根据 PUCCH 承载的控制信令类型而设定的, 可能是 FORMAT la , FORMAT lb , FORMAT 2 , FORMAT 2a, FORMAT 2b中的一种。
基站可能根据 UE所在的地理位置确定 UE是否位于小区边缘,也可能根据无线信道 条件确定 UE是否位于小区边缘, 例如将网络中无线信道条件恶劣到一定程度的 UE确定 为位于小区边缘的 UE。 例如, 在移动通信中, 累积分布函数 (CDF , Cumulative Distribution Function ) 曲线中位于 5%位置及以下的 UE为位于小区边缘的 UE。 如果有多 个位于小区边缘的 UE, 基站可以仅获取其中一个 UE所使用的最低等级业务和第一上行 控制信息格式。 可选的,基站选择的这个 UE是 CDF曲线位置最低, 也即信道条件最恶劣 的 UE。
102、基站按照位于小区边缘的 UE所使用的最低等级业务和第一上行控制信息格式 获取 PUCCH的第一信号千扰噪声比 SINRo NOMINAL PUCCH。
其中, SINRo— NOMINAL puccH表示为保证 UE所使用的最低等级业务的业务盾量, 基 站期望釆用第一上行控制信息格式的 PUCCH能达到的信号千扰噪声比,单位可以是 dB。 本领域技术人员可以理解的,业务等级可以通过业务盾量等级标识( QoS class identifier, QCI ) 来指示。
本实施例中, 基站可以根据最低等级业务和第一上行控制信息格式来生成 SINRo— NOMINAL PUCCH,使得生成的与上述最低等级业务相对应的 SINRo— NOMINAL PUCCH满足 用于解调第一上行控制信息格式的 PUCCH承载的反馈信息(如 ACK或 NACK )的解调门 限要求。本领域技术人员可以理解的, 不同的场景和 /或不同的信道条件对解调成功率均 有影响, 相应的解调门限要求也可能不同。 例如, 解调门限的取值为 10dB~30dB中任一 值。
可选的, 如果基站周期性向 UE发送与该 UE的 PPUCCH ( i )相关的参数, 即 UE按照 更新周期对 PPUCCH ( i )做更新, 则基站在下一个更新周期到来之前的某一时刻, 完成第 一信号千扰噪声比的获取即可。
103、 基站获取 INPUCCH ( i ), 即在子帧 i时的承载 PUCCH的无线资源 (RB , Radio Bearer ) 的平均千扰噪声功率。
其中, INPUCCH ( i ) 的单位可以是 dBm。
本步骤中, 承载 PUCCH的 RB包括承载当前上行控制信息格式的 PUCCH的 RB。
104、基站判断 INPUCCH ( i )与功率基准值 INPUCCH— REF之间的相对差值是否大于阈值 INTHPUCCH。 若是, 则执行步骤 105; 若否, 则执行步骤 106。
其中, INPUCCH— REF和 INTH— PUCCH的单位可以是 dBm。
本步骤中的功率基准值 INPUCCH REF可能是基站的预设值, 也可能是基站根据 UE在 某个子帧的承载 PUCCH的 RB的平均千扰噪声功率确定的值。
本步骤中, 基站可以预设阈值 INTH— PUCCH, 也可以在信道条件下进行测试评估, 从 而获得 INTHPUCCH。 本领域技术人员可以理解的, 不同的信道条件下, 基站获得的 INTH— PUCCH取值可能不同。 例如, INTH— PUCCH取值为 -121dBm至 -91dBm中的任一值。 通过 调整 IN™— PUCCH取值, 可以增强 UE在小区的千扰噪声增大到一定程度时(即超过一定门 限) 的抗千扰能力, 从而能够更好的保证 UE的性能, 还可以在小区的千扰噪声降低到 一定程度时, 实现降低该基站下各 UE的发射功率, 从而在保证 UE的性能的前提下降低 对邻区千扰。
如果 |IN PUCCH ( ί ) - INpuCCH REF I > ΙΝχΗ PUCCH, 则基站可以获知: 当更新周期到达 时, 如果当前测量的 INPUCCH ( i )相对于参考 IN值变化显著, 则基站执行步骤 105来调整 Ρθ NOMINAL PUCCH。 本实施例中" 11"表示取绝对值。
如果 |IN puccH (i) - INPUCCH— REF|≤INTH PUCCH, 则基站可以获知: 相对于子帧 i-1, 子 帧 i时的小区千扰噪声变化较小, 基站执行步骤 106, 保持 P。— NOMINAL— PUCCH不变, 即可实 现 UE的抗千扰能力不变的情况下, UE的性能不会降低, 同时不改变整网千扰状况。
105、 基站向 UE发送 P0 NOMINAL PUCCH (i), 即 UE在子帧 i时的参数 P。 NOMINAL PUCCH。 其中 , Ρθ— NOMINAL— PUCCH ( i ) = SINRo— NOMINAL— PUCCH + INpuCCH ( i )。
可选的, 基站将 Ρθ NOMINAL PUCCH (i)通过广播信道发送给小区中的所有 UE。
可选的, 基站还将功率基准值 INPUCCH— REF更新为 INPUCCH (i) 的值, 即: 更新后的 INpuCCH REF = INPUCCH( i )。进一步的,更新后的 INPUCCH REF将用于基站在下一次对 PUCCH 发射功率的判断过程中。 例如, 基站可以在每个 PUCCH发射功率的更新周期内执行本 实施例的步骤 104, 支设基站在前一次步骤 104的判断过程后, 将本次判断过程中釆用的 INPUCCH— REF修改为 INPUCCH (i) 的值, 则基站在后一次执行步骤 104的判断过程中, 将釆 用修改后的 INPUCCH— REF (即取值为 INPUCCH (i) 的 INPUCCH— REF )作为当前功率基准值。
如果修改后的 INPUCCH— REF取值大于修改前的 INPUCCH— REF , 基站通过这种方法增大了 INpuCCH REF, 从而有利于增加 UE在下一个 INPUCCH (i) 更新周期时的抗千扰能力。 如果 修改后的 INPUCCH— REF取值小于修改前的 INPUCCH— REF , 基站通过这种方法减小了 INpuCCH REF, 从而有利于降低下一个 INPUCCH (i) 更新周期时的网络千扰。
通过更新 INPUCCH REF基站可以在后续确定 Po NOMINAL PUCCH (i)取值的过程中做出更 加准确的判断, 从而使 UE能够根据更加准确的参数获得更加准确的 PUCCH ( i )。
106、 基站向 UE发送 Po— NOMINAL— PUCCH ( i )' 其中 ' Ρθ— NOMINAL— PUCCH ( i ) =
Po— NOMINAL— PUCCH(i- 1 ) , 即子帧 i时的 P。— NOMINAL— PUCCH取值与子帧 i- 1时的 P。— NOMINAL— PUCCH取 值相同。
可选的, 基站将 P。 NOMINAL PUCCH (i)通过广播信道发送给小区中的所有 UE。 在本实施例中, 基站在 INPUCCH (i) 与 INPUCCH— REF之间的相对差值大于阈值时, 可 以根据 SINRo— NOMINAL— PUCCH和 INPUCCH ( i ) 来确定 PQ— NOMINAL— PUCCH并发送给 UE, 与现有 技术相比, 该 P0 NOMINAL PUCCH ( i ) 更加精确。 因此, 可以使 UE得出的 PPUCCH (i) 更加 精确, 从而保证在基站控制下的小区内, 各个 UE的 PUCCH信道在基于码分复用的情况 下能够保证信令传输的可靠性。
本实施例应用在 UE接入基站控制下的某小区的场景中时, UE确定的 PPUCCH (i) = min{ PCMAX, Po— PUCCH + PL + h ( nCQI, nHARQ ) + AFPUCCH ( F ) }。 因此, UE根据接收到 的准确 Ρο NOMINAL PUCCH' 确定准确的 Po PUCCH' 从而根据上述公式进行准确的 PUCCH发 射功率的开环功率控制。
进一步的, 由于本实施例中的 PUCCH可以承载反馈信息 (例如 ACK、 NACK等信 令), 而该反馈信息是与该 PUCCH对应的物理下行共享信道(Physical Downlink Share Channel, PDSCH )承载的下行数据相关的。 因此, 基站在小区千扰增大时, 可以提高 UE的 PUCCH发射功率, 从而保证正确解码上述反馈信息, 避免 PDSCH承载的下行数据 的错误重传。 由于基站在上述提高 UE的 PUCCH发射功率过程中, 是以 SINRo— NOMINAL PuccH为依据的, 因此, 基站可以使提高了的发射功率在保证位于小区边 缘的 UE所使用的最低等级业务的正常使用的同时, 最大程度的降低网络千扰。
本发明的另一个实施例与上述实施例的区别在于, 步骤 102改在步骤 104与步骤 105 之间执行, 即基站顺序执行步骤 101、 103和 104, 然后根据 104的判断结果顺序执行步骤 102和 105 , 或者执行步骤 106。 本发明的另一个实施例与上述实施例的区别在于, 步骤 101和 102都改在步骤 104与步骤 105之间执行, 即基站顺序执行步骤 103和 104 , 然后根据 104的判断结果顺序执行步骤 101、 102和 105 , 或者执行 106。 这两个实施例中的基站在 判断出 INPUCCH ( i ) 与 INPUCCH— REF之间的相对差值不大于阈值的情况下, 无需执行获取 INPUCCH ( i ) 的步骤, 可以节省基站的电量。
本领域技术人员可以理解的, 无论是 FDD系统, 还是 TDD系统, 基站都可以发送
Ρθ NOMINAL PUCCH以供 UE得出 P0 PUCCH, 从而实现开环功率控制。 因此, 上述几个实施例 既适用于 FDD系统, 又适用于 TDD系统。
请参阅图 2 , 本发明的另一个实施例提供了一种功率控制方法。 本实施例中, 基站 可以向该基站控制下的小区内在线的 UE发送与该 UE的 PPUCCH ( i )相关的参数, 例如
Ρθ— NOMINAL— PUCCH » Ρθ— UE— PUCCH和 ;"。 UE才艮据公式
-l
g(i) = g(i - ^> + ∑ S H (i - km ) 得到 g ( i )。 与现有技术相比, 基站发送给 UE的 ^pre:OT更加精确, 因此, UE根据精确的 得出精确的 g ( i ), 最终使得出的 PPUCCH ( i )更加精确。 本实施例可以包括如下步 骤。
201、 基站获取 UE在某时刻 i所使用的最高等级业务和上述 UE所使用的最高等级业 务对应的 PUCCH的上行控制信息格式(以下筒称第二上行控制信息格式)。
例如, 基站利用现有技术可以获取任一个在线的 UE的终端标识、 该 UE所使用的最 高等级业务及其对应的 PUCCH的上行控制信息格式。 其中, PUCCH的上行控制信息格 式可以为 PUCCH format la, PUCCH format lb, PUCCH format 2, PUCCH format 2a, PUCCH format 2b中的任一种。
可选的, UE所使用的最高等级业务是指 UE在某时刻所使用的最高等级业务。例如, UE在某时刻开始使用一个业务, 而该业务的等级高于 UE正在使用的其他业务, 则基站 可以获取该业务和该业务对应的 PUCCH的上行控制信息格式。
202、 基站按照该 UE在时刻 i所使用的最高等级业务和第二上行控制信息格式获取 PUCCH的第二信号千扰噪声比 SINRo UE PUCCH MAX、 1 。
其中, SINRo— UE MAX表示为保证 UE所使用的最高等级业务的业务盾量, 基站 期望釆用第二上行控制信息格式的 PUCCH能达到的信号千扰噪声比, 单位可以是 dB。
可选的, 如果基站周期性向 UE发送与该 UE的 PPUCCH ( i )相关的参数, 即 UE按照 更新周期对 PPUCCH ( i )做更新, 则基站在下一个更新周期到来之前的某一时刻, 完成第 二信号千扰噪声比的获取即可。
本实施例中, 基站可以根据最高等级业务和第二上行控制信息格式来生成 SINRo UE PUCCH MAX ' 也就是使得生成的与上述最高等级业务相对应的 SINRo— UE MAX满足用于解调第二上行控制信息格式的 PUCCH承载的反馈信息 (如 ACK或 NACK )的解调门限要求。 本领域技术人员可以理解的, 不同的场景和 /或不同的 信道条件对解调成功率均有影响, 相应的解调门限要求也可能不同。 例如, 解调门限的 取值为 10dB~30dB中任一值。
203、 基站获取子帧 i-km时的传输功率控制命令字 pre:OT( - ^) , 其中, m取值为从
0至 M-1 ( M为大于 1的整数)。
本步骤中, 基站共获取到 M个传输功率控制命令字。
例如, 频分双工 ( FDD, Frequency Division Duplex ) 系统中, k。可以取为 4, M可 以取为 1。 时分双工 (TDD, Time Division Duplex ) 系统中 组成的下行关系集合索引 ( Downlink association set index ) 可参见下表 1。 上 -下行 子帧 n
配置 0 1 2 3 4 5 6 7 8 9
0 - - 6 - 4 - - 6 - 4
1 - - 7, 6 4 - - - 7, 6 4 -
2 - - 8, 7, 4, 6 - - - - 8, 7, 4, 6 - -
3 - - 7, 6, 11 6, 5 5, 4 - - - - -
4 - - 12, 8, 7, 11 6, 5, 4, 7 - - - - - -
5 - - 13, 12, 9, 8, 7, 5, 4, 11, 6 - - - - - - -
6 - - 7 7 5 - - 7 7 -
204、 基站判断 BER (i) 与 BERPUCCH— REF的大小关系, 其中, BER (i)表示子帧 i 时的误码率, BERPUCCH— REF为误码率基准值。 若 BER (i) 大于 BERPUCCH— REF, 则执行步 骤 205; 若子帧 i时的 BER (i)小于 BERPUCCH— REF, 则执行步骤 206; 若子帧 i时的 BER (i) 等于 BERPUCCHREF, 则执行步骤 207。
其中, BER (i)可以是基站根据现有技术获取到的 UE在子帧 i时的 PUCCH的误码 率。 BER (i)和 BERpUCCH— REF可以是百分数。
本步骤中, 基站可以预设 BERPUCCH— REF, 也可以在信道条件下进行测试评估, 从而 获得 BERPUCCH— REF。 例如基站根据 PUCCH承载的反馈数据的解调成功率设置 BERPUCCH— REF, 上述反馈数据所对应的物理下行共享信道 PDSCH的业务是最高等级业 务。本领域技术人员可以理解的, 不同的场景和 /或不同的信道条件对解调成功率均有影 响, 因此基站获得的 BERPUCCH— REF取值可能不同。 例如, BERPUCCH— RE取值为 0.1%~15% 中的任一值。
如果 BER (i) >BERPUCCH— REF, 则基站可以获知: 需要提高 UE的 PUCCH发射功率 来降低 BER。 例如, 基站执行步骤 205。
如果 BER (i) <BERPUCCH— REF, 则基站可以获知: 为了降低网络千扰要降低 UE的 PUCCH发射功率。 例如, 基站执行步骤 206。
如果 BER (i) = BERPUCCH_REF, 则基站可以获知: 不需要改变 UE的 PUCCH发射功 率, 即可保持 UE的抗千扰能力和性能不会降低。 例如, 基站执行步骤 207。
205 、 基 站 向 UE 发 送 H(i_kJ , 其 中 , δ' H (i -km) = δ H (i -km) + SINR^ QCI (i) , ASINRUE_QCI ( i )表示 UE在子帧 i时釆用 的第一信号千扰噪声比偏置, 用于提高发射功率。
可选的, ASINRUE QCI ( i ) = SINRo UE PUCCH MAX ( i ) - SINRo NOMINAL PUCCH。 这 里的 SINRo— NOMINAL PUCCH可参照上述实施例中关于 SINRo— NOMINAL PUCCH的描述,例如基站 可以通过执行上述实施例中的步骤 101-102获取到 SINRo— NOMINAL PuccH, 此处不再赞述。 ASINRUE QCI ( i )可以表示为保证与 UE所使用的最高等级业务的业务盾量, 基站期望釆 用第二上行控制信息格式的 PUCCH能达到的信号千扰噪声比与为保证与 UE所使用的最 低等级业务的业务盾量, 基站期望釆用第一上行控制信息格式的 PUCCH能达到的信号 千扰噪声比间的相对偏置, 该偏置因此能够体现出不同等级业务的需求。 因此, 基站可 以在提高 UE的 PUCCH发射功率的同时,保证在基站控制下的小区内,各个 UE的 PUCCH 信道在基于码分复用的情况下能够保证信令传输的可靠性。
206 、 基 站 向 UE 发 送 H(i _kJ , 其 中 ,
S'PUCCH(i -km) = SPUCCH (i -k - ASINR,,^ (f) , ASINROFFSET ( i )表示 UE在子帧 i时釆用 的第二信号千扰噪声比偏置, 用于降低发射功率。
可选的, 基站设置 ASINRQFFSET的初始值, 并根据实际情况进行调整, 并在下一次 执行 PUCCH功率控制 (例如执行步骤 206 ) 时, 釆用调整后的 ASINRoFFSET。 例如, ASINROFFSET的初始值可以为 ldB , 基站以 ldB为步长进行调整。 可选的, 基站对于 ASINROFFSET的调整可以体现快升慢降, 即基站在增加发射功率时, ASINRUE QCI的取值 所釆用的步长大于基站在降低发射功率时, ASINRoFFSET的取值所釆用的步长, 如前者 为 2dB , 后者为 ldB。
本步骤中, 基站可以预设 ASINROFFSET, 也可以在信道条件下进行测试评估, 从而 获得 ASINROFFSET。 本领域技术人员可以理解的, 基站根据不同的场景和 /或不同的信道 条件评估得到的 ASINROFFSET不同。通过调整 ASINRoFFSET取值 ,可以在 PUCCH BER达到 要求时, 实现减小该基站下相应 UE的发射功率, 从而在保证 UE的性能的前提下降低对 邻区千扰。
207、基站向 UE发送 P[/COT( - m) ,其中, p[/COT( - m)取值与 P[;COT '- 相同。 由于本实施例中的基站可以釆用现有技术中发送 δ H ( - )的方式来发送 δ' H (i -km) , 因此, 本步骤中的基站实际上是将步骤 203中获取的 δ H ( - km)发送 给 UE。
可选的, 本实施例的步骤 205-207中的任一步骤, 基站通过物理下行控制信道 ( Physical Downlink Control Channel, PDCCH ) 向 UE发送 P[/COT(— 。 在本实施例中, 基站先对获取到的 pre:OT( -tm)进行调整, 再将调整得出的 δ' H (i - km )发送给 UE , 由于 δ' H (i -^)相比基站获取到的 δ H (/ - km )更加精确, 因此, 可以使 UE得出的 PPUCCH (i) 更加精确, 从而保证在基站控制下的小区内, 各个 UE的 PUCCH信道在基于码分复用的情况下能够保证信令传输的可靠性。
本实施例应用在 UE保持在线状态的场景中时, UE可以利用现有技术进行 PUCCH 发射功率的开环功率控制, 并釆用本实施例提供的方法进行 PUCCH发射功率的闭环功 率控制。在闭环功率控制中, UE确定的 PPUCCH( i )= min{ PCMAX , PQ— PUCCH + PL + h( nCQi, nHARQ ) + AF— PUCCH ( F ) + g ( i ) }, 因此, UE根据接收到的准确 P[/COT , 确定准确的 g ( i ), 从而根据上述公式进行准确的 PUCCH发射功率的闭环功率控制。
本领域技术人员可以理解的, 无论是 FDD系统, 还是 TDD系统, 基站都可以发送 以供 UE得出 g (i), 从而实现闭环功率控制。 因此, 上述实施例既适用于 FDD系 统, 又适用于 TDD系统。
本发明的另一个实施例提供一种功率控制方法。 本实施例中, 基站可以向该基站 控制下的小区内在线的 UE发送与该 UE的 PPUCCH ( i )相关的参数, 例如 P0 NOMINAL PUCCH、 PQUE PUCCH和 。其中,基站通过本发明上述实施例提供的方法调整 P0 NOMINAL PUCCH (如步骤 101-105或 106 )和 ό (如步骤 201-205或 206或 207 ), 从而使基站发送给 UE 的 Ρθ— NOMINAL— PUCCH和 δ 更加精确, 因此, UE根据精确的 P0— NOMINAL— PUCCH得出精确的
Ρθ— PUCCH, 根据精确的 PreOT得出精确的 g (i), 使最终得出的 PPUCCH (i) 更加精确。 本 实施例中, 基站发送 PQ— NOMINAL puccH和 δ 给 UE之前, 分别完成步骤 101 - 105或 106 , 和步骤 201-205或 206或 207即可, 无需限定上述各步骤的执行顺序。
请参阅图 3, 本发明的另一个实施例提供了一种基站 30。 该基站 30可以包括第一获 取单元 301和第一发送单元 302。 其中, 第一获取单元 301用于获取 INPUCCH (i), INPUCCH ( i ) 为基站在子帧 i时承载的物理上行控制信道 PUCCH的无线资源的平均千扰噪声功 率。第一发送单元 302,用于发送用于进行子帧 i时的功率控制的参数 P0 NOMINAL PUCCH、 1 其中, 如果第一获取单元 301获取的 INPUCCH ( i )与功率基准值 INPUCCH— REF之间的相对差 值大于阈值 INTH PUCCH ' 则 Ρθ NOMINAL PUCCH ( i ) 的取值为 SINRo NOMINAL PUCCH和子帧 i时 的 INPUCCH两者之和, SINRo— NOMINAL PUCCH可以为第一获取单元 301按照位于小区边缘的 UE所使用的最低等级业务和第一上行控制信息格式获取的 PUCCH的第一信号千扰噪声 比; 否则, PQ NOMINAL— PUCCH ( i ) 的取值与用于进行子帧 i- 1时的功率控制的参数 Ρθ NOMINAL PUCCH ( i-1 ) 的取值相同。
可选的, 该基站 30还包括: 第一处理单元 303 , 用于判断第一获取单元 301获取的
INPUCCH ( D与功率基准值 INPUCCH— REF之间的相对差值是否大于阈值 INTH— PUCCH , 并将判 断结果提供给第一发送单元 302。 相应的, 第一发送单元 302# ^据第一处理单元 303提供 的判断结果发送 P0 NOMINAL PUCCH ( i )。
可选的, 第一上行控制信息格式是根据 PUCCH承载的控制信令类型而设定的, 可 能是 FORM AT la, FORMAT lb, FORMAT 2, FORMAT 2a, FORMAT 2b中的一种。
可选的, SINRo—NOMINAL— puccH是为了保证 UE所使用的最低等级业务的盾量, 基站 期望釆用第一上行控制信息格式的 PUCCH达到的信号千扰噪声比。
本实施例中的基站应用在 UE接入基站控制下的某小区的场景中, 此时 UE确定的
PPUCCH ( i ) = min{ PCMAX ' PO— PUCCH + PL + h ( nCQi, nHARQ ) + AFPUCCH ( F ) }。 因此, UE根据通过第一发送单元 302所接收到的准确 PQ NOMINAL PUCCH,确定准确的 PQ— PUCCH,从 而根据上述公式进行准确的 PUCCH发射功率的开环功率控制。
本实施例中的基站可用于如图 1所示的实施例所提供的方法中, 即执行该方法中由 基站实现的各动作, 本实施例中的基站所釆用的参数和场景也可参照该方法中的说明, 此处不再赘述。 并且, 本实施例中的基站既适用于 FDD系统, 又适用于 TDD系统。
请参阅图 4, 本发明的另一个实施例提供了一种基站 40。 该基站 40可以包括第二获 取单元 401和第二发送单元 402。 其中, 第二获取单元 401 , 用于获取用户设备 UE在子帧 i时的物理上行控制信道 PUCCH的误码率 BER ( i )。 第二发送单元 402, 用于发送传输功 率控制命令字 pre:OT( - m) , m取值为从 0至 M-1 , M为大于 1的整数。 可选的, δ' H (i - k 的取值为如下任一种:
如果第二获取单元 401获取的 BER ( i ) 大于误码率基准值 BERPUCCH— REF , 则 Δ' PUCCHQ _KJ = SPUCCH Q _KJ + SINRm Qd , ASINRUEQCI ( i ) 为所述 UE在子帧 i时釆用 的第一信号千扰噪声比偏置; 或者,
如 果 第 二获取单元 401 获取的 BER ( i ) 小 于 BERPUCCHREF , 则 δ' H (i -km) = δ H (i -km) - ASINR^ , ASINROFFSET ( i ) 为 UE在子帧 i时釆用的第 二信号千扰噪声比偏置; 或者,
如果第二获取单元 401获取的 BER ( i ) 等于 BERPUCCH REF , 则 S' H (i -^)的取 值与 δ H( _kJ的取值相同; TOCOT( - 为第二获取单元 401获取到的子帧 i-km时的 传输功率控制命令字。
可选的, ASINRUE QCI ( i ) = SINRo UE PUCCH MAX ( i ) - SINRo NOMINAL PUCCH。 该 SINRo— NOMINAL PuccH可参照如图 3所示的实施例中关于 SINRo— NOMINAL PuccH的描述, 此处 不再赘述。 该 SINRo UE PUCCH MAX ( i )为第二获取单元 401按照 UE在时刻 i所使用的最高 等级业务和第二上行控制信息格式获取的 PUCCH的第二信号千扰噪声比, SINRo— UE MAX是为了保证 UE所使用的最高等级业务的业务盾量, 基站期望釆用第 二上行控制信息格式的 PUCCH达到的信号千扰噪声比。
可选的, 第二获取单元 401还用于获取 UE在时刻 i所使用的最高等级业务和第二上 行控制信息格式, 例如第二获取单元 401在 UE开始使用该最高等级业务时获取上述最高 等级业务和第二上行控制信息格式。
本实施例中的基站应用在 UE保持在线状态的场景中,此时 UE可以利用现有技术进 行 PUCCH发射功率的开环功率控制, 并釆用本实施例提供的方法进行 PUCCH发射功率 的闭环功率控制。在闭环功率控制中, UE确定的 PPUCCH ( i ) = min{ PCMAX , PO_PUCCH + PL + h ( nCQi, nHARQ ) + AFPUCCH ( F ) + g ( i ) } , 因此, UE根据第二发送单元 402所发送的 准确 δ H , 确定准确的 g ( i ), 从而根据上述公式进行准确的 PUCCH发射功率的闭环 功率控制。
可选的, 该基站 40还包括: 第二处理单元 403 , 用于判断第二获取单元 401获取的 BER ( i )与误码率基准值 BERPUCCHREF的大小关系, 并将判断结果提供给第二发送单元 402。 相应的, 第二发送单元 402根据第二处理单元 403提供的判断结果发送 3 PUCCH Q - k^ 。
本实施例中的基站可用于如图 2所示的实施例所提供的方法中, 即执行该方法中由 基站实现的各动作, 本实施例中的基站所釆用的参数和场景也可参照该方法中的说明, 此处不再赘述。 并且, 本实施例中的基站既适用于 FDD系统, 又适用于 TDD系统。
请参阅图 5 , 本发明的另一个实施例提供一种基站 50, 该基站 50可以包括第三获取 单元 501和第三发送单元 502。 其中, 第三获取单元 501包括上述实施例提供的基站 30中 的第一获取单元 301和基站 40中的第二获取单元 401 , 第三发送单元 502包括上述实施例 提供的基站 30中的第一发送单元 302和基站 40中的第二发送单元 402。
可选的, 该基站 50还包括第三处理单元 503。 该第三处理单元 503包括上述实施例 提供的基站 30中的第一处理单元 303和基站 40中的第二处理单元 403。
该实施例提供的基站发送给 UE的 PQNOMINAL puccH和 ^Pre:OT更加精确, 因此, UE根 据精确的 P0—NOMINAL_PUCCH得出精确的 P0_PUCCH,根据精确的 得出精确的 g ( i ), 使最终得出的 PPUCCH ( i )更加精确。 本实施例中的基站既适用于 FDD系统, 又 适用于 TDD系统。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以 通过程序来指令相关的硬件来完成, 该程序可以存储于一计算机可读存储介盾中, 存储 介盾可以包括: ROM, RAM, 磁盘或光盘等。
以上对本发明实施例所提供的 LTE PUCCH的功率控制方法和基站进行了详细介 绍, 本文中应用了具体个例对本发明的原理及实施方式进行了阐述, 以上实施例的说明 只是用于帮助理解本发明的方法及其核心思想; 同时, 对于本领域的一般技术人员, 依 据本发明的思想, 在具体实施方式及应用范围上均会有改变之处, 综上所述, 本说明书 内容不应理解为对本发明的限制。

Claims

权利要求
1、 一种功率控制方法, 其特征在于, 包括:
基站获取 INPUCCH ( i ), 所述 INPUCCH ( i )为所述基站在子帧 i时承载的物理上行控制 信道 PUCCH的无线资源的平均千扰噪声功率;
所述基站发送用于进行子帧 i时的功率控制的参数 P0 NOMINAL PUCCH 1 A 其中, 如 果 INPUCCH ( i ) 与功率基准值 INPUCCHREF之间的相对差值大于阈值 INTHPUCCH, 则所述 Ρθ NOMINAL PUCCH ( i ) 的取值为 SINRo NOMINAL PUCCH和子帧 i时的 INPUCCH两者之和, 所述 SINRo— NOMINAL PUCCH为所述基站按照位于小区边缘的 UE所使用的最低等级业务和第一 上行控制信息格式获取的 PUCCH的第一信号千扰噪声比; 否则, P0 NOMINAL PUCCH 1 ) 的取值与用于进行子帧 i-1时的功率控制的参数 P0 NOMINAL PUCCH ( i-l ) 的取值相同。
2、 根据权利要求 1所述的方法, 其特征在于, 所述第一上行控制信息格式是以下 格式中的任一种: 格式 1A、 格式 1B、 格式 2、 格式 2A、 格式 2B。
3、 根据权利要求 1或 2所述的方法, 其特征在于,
所述 SINRo— NOMINAL PUCCH是为了保证 UE所使用的最低等级业务的盾量, 所述基站 期望釆用第一上行控制信息格式的 PUCCH达到的信号千扰噪声比。
4、 根据权利要求 1至 3任一项所述的方法, 其特征在于, 还包括:
所述基站发送传输功率控制命令字 pre:OT( - Am) , 其中, m取值为从 0至 M-1 , M 为大于 1的整数; 其中, P[/COT( - Am)的取值为以下任一种:
如果所述基站获取的所述 UE在子帧 i时的 PUCCH的误码率 BER ( i ) 大于误码率基 准值 BERPUCCH— REF , 则 δ' H (i -km) = δ H (i -km) + ASIN^ QCJ (i) , 所述 ASINRUEQCI ( i ) 为所述 UE在子帧 i时釆用的第一信号千扰噪声比偏置; 或者,
如 果 所 述 BER ( i ) 小 于 BERPUCCH— REF , 则 δ' H (i -km) = δ H (i -km) - ASINR,,^ (i) , 所述 ASINRoFFSET ( i ) 为所述 UE在子帧 i 时釆用的第二信号千扰噪声比偏置;
如果所述 BER ( i )等于 BERPUCCHREF, 则 δ' H(i _kj的取值与 δ H(i _kJ的取 值相同; 所述 ^a^-^J为基站获取到的子帧 i-km时的传输功率控制命令字。
5、 根据权利要求 4所述的方法, 其特征在于, 所述 UE所使用的最高等级业务和第 二上行控制信息格式是所述基站在所述 UE开始使用所述最高等级业务时获取的。
6、 根据权利要求 4所述的方法, 其特征在于, 所述 ASINRUEQCI ( i )的取值为 SINRo UE PUCCH MAX (i)与所述 SINRo NOMINAL PUCCH 的差值;
所述 SINRo UE PUCCH MAX ( i ) 为所述基站按照所述 UE在时刻 i所使用的最高等级业 务和第二上行控制信息格式获取的 PUCCH的第二信号千扰噪声比。
7、 根据权利要求 5所述的方法, 其特征在于, 所述 SINRo— UE MAX是为了保证 所述 UE所使用的最高等级业务的业务盾量, 所述基站期望釆用第二上行控制信息格式 的 PUCCH达到的信号千扰噪声比。
8、 一种功率控制方法, 其特征在于, 包括:
基站获取用户设备 UE在子帧 i时的物理上行控制信道 PUCCH的误码率 BER ( i ); 所述基站发送传输功率控制命令字 P[/COT( _ m), m取值为从 0至 M-1, M为大于 1 的整数; 其中, P[/COT( - Am)的取值为以下任一种:
如 果 所 述 BER ( i ) 大 于 误 码 率 基 准 值 BERpUCCH— REF , 则
^ puccH 0' - ) = SPUCCH 0' ~km) + ^ IN^ QCI (/) , 所述 ASINRUEQCI (i) 为所述 UE在子帧 i 时釆用的第一信号千扰噪声比偏置; 或者,
如 果 所 述 BER ( i ) 小 于 BERPUCCH— REF , 则 δ' H (i -km) = δ H (i -km)- ASINR,,^ (i) , 所述 ASINRoFFSET (i) 为所述 UE在子帧 i 时釆用的第二信号千扰噪声比偏置; 或者,
如果所述 BER ( i )等于 BERPUCCH REF, 则 δ' H(i-km)的取值与 δ H(i_kJ的取 值相同; 所述
Figure imgf000018_0001
-^J为基站获取到的子帧 i-km时的传输功率控制命令字。
9、 根据权利要求 8所述的方法, 其特征在于, 所述 UE所使用的最高等级业务和第 二上行控制信息格式是所述基站在所述 UE开始使用所述最高等级业务时获取的。
10、 根据权利要求 8所述的方法, 其特征在于,
所述 ASINRUEQCI ( i )的取值为 SINRo UE PUCCH MAX (i)与所述 SINRo NOMINAL PUCCH 的差值;
所述 SINRo UE PUCCH MAX ( i ) 为所述基站按照所述 UE在时刻 i所使用的最高等级业 务和第二上行控制信息格式获取的 PUCCH的第二信号千扰噪声比。
11、 根据权利要求 10所述的方法, 其特征在于, 所述 SINRo— UE MAX是为了保 证所述 UE所使用的最高等级业务的业务盾量, 所述基站期望釆用第二上行控制信息格 式的 PUCCH达到的信号千扰噪声比。
12、 一种基站, 其特征在于, 包括:
第一获取单元, 用于获取 INPUCCH ( i ), 所述 INPUCCH ( i )为基站在子帧 i时承载的物 理上行控制信道 PUCCH的无线资源的平均千扰噪声功率;
第一发送单元, 用于发送用于进行子帧 i时的功率控制的参数 P。 NOMINAL PUCCH ^ 1 其中, 如果 INPUCCH ( i ) 与功率基准值 INPUCCH— REF之间的相对差值大于阈值 INTH— PUCCH, 则所述 Po NOMINAL PUCCH ( i )的取值为 SINRo NOMINAL PUCCH和子帧 i时的 INPUCCH两者之和, 所述 SINRo— NOMINAL PUCCH为所述第一获取单元按照位于小区边缘的 UE所使用的最低等 级业务和第一上行控制信息格式获取的 PUCCH的第一信号千扰噪声比; 否则, Ρθ NOMINAL PUCCH ( i )的取值与用于进行子帧 i-1时的功率控制的参数 P0 NOMINAL PUCCH l~ ί 的取值相同。
13、 根据权利要求 12所述的基站, 其特征在于,
所述第一发送单元还用于发送传输功率控制命令字^^ Am),其中, m取值为 从 0至 M-1, M为大于 1的整数; 其中, P[/COT( - Am)的取值为以下任一种:
如果所述第一获取单元获取的所述 UE在子帧 i时的 PUCCH的误码率 BER ( i ) 大于 误码率基准值 BERPUCCHREF , 则 δ' H (i -km) = δ H (i -km) + ASIN^ ^ (i) , 所述
ASINRUE_QCI (i) 为所述 UE在子帧 i时釆用的第一信号千扰噪声比偏置;
如 果 所 述 BER ( i ) 小 于 BERPUCCH— REF , 则 δ' H (i -km) = δ H (i -km)- ASINR,,^ (i) , 所述 ASINRoFFSET (i) 为所述 UE在子帧 i 时釆用的第二信号千扰噪声比偏置; 或者,
如果所述 BER ( i )等于 BERPUCCHREF, 则 δ' H(i _kj的取值与 δ H(i_kJ的取 值相同; 所述 pre:OT( -Am)为所述第一获取单元获取到的子帧 i-km时的传输功率控制命 令字。
14、 一种基站, 其特征在于, 包括:
第二获取单元,用于获取用户设备 UE在子帧 i时的物理上行控制信道 PUCCH的误码 率 BER ( i );
第二发送单元, 用于发送传输功率控制命令字^^ Am), m取值为从 0至 M-1, M为大于 1的整数; 其中, P[/COT( - Am)的取值为以下任一种:
如 果 所 述 BER ( i ) 大 于 误 码 率 基 准 值 BERpUCCH— REF , 则 ^ PUCCH 0' - ) = SPUCCH 0' ~km) + ^ IN^ QCI (/) , 所述 ASINRUEQCI (i) 为所述 UE在子帧 i 时釆用的第一信号千扰噪声比偏置;
如 果 所 述 BER ( i ) 小 于 BERPUCCH— REF , 则 δ' H (i - km) = δ H (i -km) - ASINR,,^ (i) , 所述 ASINRoFFSET ( i ) 为所述 UE在子帧 i 时釆用的第二信号千扰噪声比偏置; 或者,
如果所述 BER ( i ) 等于 BERPUCCHREF, 则 δ' H(i _kj的取值与 δ H(i _kJ的 取值相同; 所述 pre:OT ( - Am)为所述第二获取单元获取到的子帧 i-km时的传输功率控制 命令字。
15、根据权利要求 14所述的基站,其特征在于,所述 ASINRUE QCI( i )取值为 SINRo— UE
PUCCH MAX ( 1 ) 与所述 SINRo NOMINAL PUCCH的差值; 所述 SINRo UE PUCCH MAX ( i ) 为所述第二获取单元按照所述 UE在时刻 i所使用的最 高等级业务和第二上行控制信息格式获取的 PUCCH的第二信号千扰噪声比。
PCT/CN2011/081902 2010-11-26 2011-11-08 功率控制方法和基站 WO2012068952A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2012546357A JP5369237B2 (ja) 2010-11-26 2011-11-08 電力制御方法及び基地局
EP11843307.7A EP2501186B1 (en) 2010-11-26 2011-11-08 Power control method and base station
US13/548,135 US8737340B2 (en) 2010-11-26 2012-07-12 Power control method and base station
US14/251,347 US8934444B2 (en) 2010-11-26 2014-04-11 Power control method and base station

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010561679.3A CN102143568B (zh) 2010-11-26 2010-11-26 功率控制方法和基站
CN201010561679.3 2010-11-26

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/548,135 Continuation US8737340B2 (en) 2010-11-26 2012-07-12 Power control method and base station

Publications (1)

Publication Number Publication Date
WO2012068952A1 true WO2012068952A1 (zh) 2012-05-31

Family

ID=44410721

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/081902 WO2012068952A1 (zh) 2010-11-26 2011-11-08 功率控制方法和基站

Country Status (5)

Country Link
US (2) US8737340B2 (zh)
EP (1) EP2501186B1 (zh)
JP (1) JP5369237B2 (zh)
CN (1) CN102143568B (zh)
WO (1) WO2012068952A1 (zh)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102143568B (zh) 2010-11-26 2015-02-04 华为技术有限公司 功率控制方法和基站
WO2013143142A1 (en) * 2012-03-31 2013-10-03 France Telecom Research & Development Beijing Company Limited A method of special uplink power control using selectively averaged interference in heterogeneous networks
EP2880924B1 (en) * 2012-07-31 2016-10-05 Telefonaktiebolaget LM Ericsson (publ) Power control for simultaneous transmission of ack/nack and channel-state information in carrier aggregation systems
CN103580797B (zh) * 2012-08-03 2017-05-03 电信科学技术研究院 上行控制信息uci的传输方法和设备
US9276726B2 (en) * 2012-12-11 2016-03-01 Samsung Electronics Co., Ltd. Transmissions/receptions of uplink acknowledgement signals in wireless networks
US10512064B1 (en) * 2013-07-09 2019-12-17 Sprint Spectrum L.P. Allocating wireless communication link resources in a control channel
US20150358914A1 (en) * 2013-08-08 2015-12-10 Telefonaktiebolaget L M Ericsson (Publ) Bs and ue, and power control methods used in the same
US9078220B2 (en) 2013-09-27 2015-07-07 Motorola Solutions, Inc. Method and apparatus for UE power class adaption for coverage extension in LTE
WO2016106604A1 (zh) * 2014-12-30 2016-07-07 华为技术有限公司 一种传输信号的方法和设备
WO2016179806A1 (zh) * 2015-05-13 2016-11-17 华为技术有限公司 一种功率控制方法、终端和基站
CN107040865B (zh) * 2016-02-04 2021-11-23 北京三星通信技术研究有限公司 一种v2x通信中的功率控制方法和设备
CN107294636B (zh) * 2016-03-30 2020-09-01 中兴通讯股份有限公司 一种消除同频干扰的检测方法及装置
KR102606781B1 (ko) * 2016-09-02 2023-11-27 삼성전자 주식회사 무선 통신 시스템에서 효율적인 데이터 송수신 방법 및 장치
CN110036672B (zh) * 2016-09-30 2022-08-09 瑞典爱立信有限公司 在通信系统中执行物理信道的功率控制的系统和方法
CN108401282A (zh) * 2017-02-04 2018-08-14 中兴通讯股份有限公司 一种自适应调整上行功率参数的方法及装置
WO2020011163A1 (zh) * 2018-07-09 2020-01-16 华为技术有限公司 一种功率调整方法、终端及存储介质
CN112055379B (zh) * 2019-06-05 2021-08-27 大唐移动通信设备有限公司 一种干扰噪声强度的测量方法及装置
US11647507B2 (en) * 2020-02-14 2023-05-09 Acer Incorporated Device and method for handling physical uplink control channel collision

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101466138A (zh) * 2008-12-31 2009-06-24 华为技术有限公司 功率配置方法、装置和系统
CN101877906A (zh) * 2010-05-19 2010-11-03 中兴通讯股份有限公司 发射功率的配置方法和装置
CN102143568A (zh) * 2010-11-26 2011-08-03 华为技术有限公司 功率控制方法和基站

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007013352A (ja) * 2005-06-29 2007-01-18 Nec Corp 送信電力制御システム及びその方法並びにそれに用いる基地局、移動通信システム
US7917164B2 (en) * 2007-01-09 2011-03-29 Alcatel-Lucent Usa Inc. Reverse link power control
KR101397135B1 (ko) 2007-03-07 2014-05-22 인터디지탈 테크날러지 코포레이션 이동국의 업링크 전력을 제어하기 위한 결합형 개방 루프/폐쇄 루프 방법
JP5106969B2 (ja) * 2007-10-01 2012-12-26 株式会社エヌ・ティ・ティ・ドコモ ユーザ装置及びセルサーチ方法
KR101572880B1 (ko) * 2007-12-12 2015-11-30 엘지전자 주식회사 다중화율을 고려한 상향링크 전력제어 방법
JP2009206627A (ja) * 2008-02-26 2009-09-10 Kyocera Corp 無線通信システム、移動局、基地局および無線通信方法
US8583137B2 (en) * 2008-05-16 2013-11-12 Qualcomm Incorporated Dynamic coverage adjustment in a multi-carrier communication system
JP5174554B2 (ja) * 2008-06-23 2013-04-03 株式会社エヌ・ティ・ティ・ドコモ 移動通信方法、移動局及び無線基地局
JP5366951B2 (ja) 2008-08-07 2013-12-11 パナソニック株式会社 周波数帯域割当方法及び送信装置
US8825100B2 (en) * 2008-08-11 2014-09-02 Blackberry Limited Method and system for providing a power boost for a wireless communication link using a subset of subcarrier frequencies of the wireless communication link channel as a reduced bandwidth channel
CN101741437B (zh) * 2008-11-19 2013-05-22 中国移动通信集团公司 一种上行功率控制方法、系统及设备
WO2011049286A1 (en) * 2009-10-23 2011-04-28 Lg Electronics Inc. Method and apparatus for controlling uplink power in a wireless communication system
US8437794B2 (en) * 2010-01-28 2013-05-07 Alcatel Lucent Methods of determining uplink target signal-to-interfence-and-noise ratios and systems thereof
US8483156B2 (en) * 2010-05-03 2013-07-09 Nokia Siemens Networks Oy Feedback for inter-radio access technology carrier aggregation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101466138A (zh) * 2008-12-31 2009-06-24 华为技术有限公司 功率配置方法、装置和系统
CN101877906A (zh) * 2010-05-19 2010-11-03 中兴通讯股份有限公司 发射功率的配置方法和装置
CN102143568A (zh) * 2010-11-26 2011-08-03 华为技术有限公司 功率控制方法和基站

Also Published As

Publication number Publication date
EP2501186A4 (en) 2013-04-24
JP2013516819A (ja) 2013-05-13
US20120275425A1 (en) 2012-11-01
US8934444B2 (en) 2015-01-13
US20140219226A1 (en) 2014-08-07
US8737340B2 (en) 2014-05-27
EP2501186B1 (en) 2016-05-11
JP5369237B2 (ja) 2013-12-18
CN102143568A (zh) 2011-08-03
CN102143568B (zh) 2015-02-04
EP2501186A1 (en) 2012-09-19

Similar Documents

Publication Publication Date Title
WO2012068952A1 (zh) 功率控制方法和基站
JP6219916B2 (ja) 移動局のアップリンク電力を制御するためのオープンループ/クローズドループを組み合わせた方法
KR102136434B1 (ko) 디바이스간(d2d) 크로스링크 전력 제어
TWI527396B (zh) 正交分頻多工存取系統之反向鏈結功率控制
JP2018515987A (ja) 無線通信システムにおけるアップリンク送信のための繰り返しレベルを適応させる方法及び装置
EP2521405B1 (en) Method and device for controlling non-adaptive retransmission power
CN113490264B (zh) 功率控制方法和装置、基站、终端、计算机可读存储介质
EP2220779B1 (en) Method and arrangement for separate channel power control
CN107592982A (zh) 低等待时间上行链路功率控制
WO2014137129A2 (ko) 무선 통신 시스템에서 상향링크 전력 제어 방법 및 이를 위한 장치
CN105340337B (zh) 终端装置、基站装置以及通信方法
WO2013023612A1 (zh) CoMP系统中上行功率控制的补偿方法及基站、用户设备
WO2014206335A1 (zh) 一种pusch功率控制方法及装置
WO2012155735A1 (zh) 一种物理下行控制信道资源的确定方法及装置
WO2011097917A1 (zh) 一种功率控制方法和设备
US10117189B2 (en) Uplink power control method, user equipment, and base station
KR101642361B1 (ko) 무선통신시스템에서 단말의 전송전력 제어 방법 및 이를 수행하는 장치
WO2022078205A1 (zh) 功率控制方法、网络设备、终端、装置及存储介质
WO2022115998A1 (zh) 一种功率控制方法及装置
WO2019029382A1 (zh) 一种物理上行控制信道pucch的功率控制方法和基站
TW201244517A (en) Power headroom reporting for carrier aggregation

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 1360/KOLNP/2012

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 2011843307

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2012546357

Country of ref document: JP

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11843307

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE