WO2013082962A1 - 一种上行功率控制方法及装置 - Google Patents
一种上行功率控制方法及装置 Download PDFInfo
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- WO2013082962A1 WO2013082962A1 PCT/CN2012/081713 CN2012081713W WO2013082962A1 WO 2013082962 A1 WO2013082962 A1 WO 2013082962A1 CN 2012081713 W CN2012081713 W CN 2012081713W WO 2013082962 A1 WO2013082962 A1 WO 2013082962A1
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- signal
- power
- uplink channel
- uplink
- transmit power
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/06—TPC algorithms
- H04W52/16—Deriving transmission power values from another channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/246—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where the output power of a terminal is based on a path parameter calculated in said terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
- H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
- H04W52/36—Transmission power control [TPC] using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/18—TPC being performed according to specific parameters
- H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non-transmission
- H04W52/281—TPC 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
- H04W52/32—TPC of broadcast or control channels
- H04W52/325—Power control of control or pilot channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0005—Synchronisation arrangements synchronizing of arrival of multiple uplinks
Definitions
- the present invention claims the priority of the Chinese patent application filed on December 8, 2011, the Chinese Patent Office, the application number is 201110405321.6, and the invention name is "an uplink power control method and device". The entire contents are incorporated herein by reference.
- TECHNICAL FIELD The present invention relates to the field of communications, and in particular, to an uplink power control method and apparatus. Background technique
- the uplink power control can minimize the interference between the UEs (User Equipments) that use the same resources in the neighboring cells, and ensure that the UE's transmit power is properly used.
- UEs User Equipments
- the uplink power to be controlled mainly includes the transmit power of the PUCCH (Physical Uplink Control Channel), the transmit power of the Physical Uplink Shared Channel (PUSCH), and the SRS (Sounding Reference Signal).
- the transmit power and the transmit power of the PRACH Physical Random Access Channel.
- the transmit power P pueeH used by the UE to transmit the PUCCH on the primary carrier is calculated by the following formula:
- P eMA . ' is the maximum transmit power allowed for the carrier of carrier c in subframe i.
- the parameter A F — PU ⁇ H (F) is configured by the higher layer, corresponding to the power offset of the different PUCCH format (format) relative to the PUCCH format la.
- ⁇ ( 7 ') denotes the transmit diversity power offset. If the UE is configured to transmit on the 2 antenna port, ⁇ ') is configured by the higher layer signaling to different PUCCH formats, and the value set is ⁇ 0, - 2 ⁇ dB; If the UE is configured to transmit on a single antenna port, then ⁇ ') ⁇ » Mn CQI , n ⁇ , ⁇ is the power offset associated with the number of bits carried by the PUCCH, where "the CSI for the bearer (Channel State Information) number of bits, n is carried
- nsR is the number of SR (Scheduling Request) bits carried.
- P 0 PUCCH is? 1 ⁇ . 11 expected power target
- ⁇ H (i _k represents the correction value obtained in the subframe ik m , for the TDD (Time Division Duplex) system , k m
- the path loss of the carrier c measured by the PJ e AUE can be configured by the higher layer signaling to use the SIB (System)
- the configured paired carrier or primary carrier is measured.
- the UE does not have PUCCH transmission on carrier c in subframe i, the UE transmits PpuscH ⁇ on carrier c according to the following formula
- the transmission power P puseH of the UE transmitting the PUSCH on the carrier c is calculated according to the following formula: Among them: :: ⁇ . . ((0) is the value of the linear linear domain value, ie ⁇ ⁇ ⁇ (( )) is as described above
- PPUUCCCCHH emits a linear power domain value of the transmitted power rate ⁇ ⁇ ⁇ (( )).
- MM PPUUSSCCHH ee (( )) is a resource source of PPUUSSCCHH on carrier wave cc, and is represented by RRBB (( RReessoouurrccee BBlloocckk ,).
- RRBB (( RReessoouurrccee BBlloocckk ,).
- PP 00 ppuusscc3 ⁇ 43 ⁇ 4cc ((jj)) is the target value of the PPUUSSCCHH expected power rate on the carrier wave cc, which is configured by the high-level layer signaling. .
- the table indicates that the MMCCSS is not the same (( MMoodduullaattiioonn Aanndd CCooddiinngg SScchheemmee,, modulation modulation coding code method))
- the table indicates that the function of the power function is adjusted and closed with the MMCCSS, and among them, JJ ⁇ is the UUEE special parameter parameter number, The upper layer signaling signaling instruction is indicated.
- BBPPRREE ((BBiitt PPeerr RReessoouurcrcee EElleemmeenntt,, 2200 per-resource resource source unit cell pair corresponding to the number of bit-bits)) table indicates that the PPUUSSCCHH corresponds to the corresponding bit-bits of each source-source unit pair The number, the table indicates the coded code rate rate of the uplink control information of the uplink control carried in the PPUUSSCCHH relative to the upper uplink data of the PPUUSSCCHH.
- the offset offset amount between the code rate rate rates is pre-provisioned by the high-layer layer signaling.
- Ff in order to adjust the amount of PPUUSSCCHH power power rate control adjustment, there are accumulated cumulative product value and the current absolute absolute value of the two kinds of two ways. .
- the required transmit power power rate PP SSRRSS required for UUEE to transmit and transmit SSRRSS on the carrier wave cc is determined by the following formula Definition::
- PP SSRRSS . . FFFFSSEETT ee ((mm)) is the displacement of the work power rate offset for the PPUUSSCCHH relative to the carrier port cc on the carrier wave cc.
- the remaining parameter parameters of the remaining parameters are the same as those of the PPUUSSCCHH on the carrier wave. .
- the UFEE's transmit power power rate of the PPRRAACCHH transmitted on the carrier wave cc is calculated by the following formula: PPPPRRAACCHH * PPRREEAAMMBBLLEE RREECCEEIIVVEEDD TTAARRGGEETT PPOOWWEERR ++
- the PREAMBLE_RECEIVED_TARGET_POWER is calculated by the MAC (Media Access Control) layer of the UE and is the PRACH target power.
- the uplink power control scheme is based on power control in which PUCCH and PUSCH of the same or different carriers are simultaneously transmitted in one subframe. If the total transmit power of the UE in the current subframe i exceeds the maximum transmit power allowed by the UE, when performing power reduction, the UE should preferentially guarantee the transmit power of the PUCCH, and proportionally reduce the PUSCH transmit power on each carrier c to meet The maximum transmit power limit allowed by the UE:
- C ('') is the linear domain value of USC 3 ⁇ 4C (the power reduction factor on each carrier,
- the UE Priority should be given to ensuring that the transmit power of the PUCCH is not reduced.
- the transmit power of the PUSCH carrying the UCI is not reduced, and the PUSCH transmit power on each carrier is reduced proportionally to meet the maximum transmit power limit allowed by the UE:
- LTE-A Rel-10 defined Uplink transmission only supports Intra-band CA (Carrier Aggregation), and it is considered that the radio signal propagation characteristics of each carrier are similar, so they are all based on the PRACH process on the PCC (Primary Component Carrier).
- TA Time Advance
- LTE-A Rel-11 a CA that supports different inter-band uplinks, and a CA deployment scheme in which a macro base station (referred to as Macro e B) and a remote radio head (RRH) can be mixed. Since the radio signal propagation characteristics of different frequency bands are different, and the propagation paths of the macro base station and the RRH are different, different carriers are caused. There is a difference in the time at which the transmitted signal arrives at the base station. Therefore, in Rel-11, the TAs of different carriers may be different, and the uplink transmission times of multiple carriers are not necessarily aligned. Therefore, the uplink channel on one carrier may be adjacent to the previous one in different transmission periods in one subframe.
- a macro base station referred to as Macro e B
- RRH remote radio head
- Embodiments of the present invention provide an uplink power control method and apparatus, which are used to implement power control on an uplink channel having different uplink transmission times, thereby ensuring that a total transmission power of a terminal device at any time in a subframe does not exceed a maximum. Transmit power to ensure that the system can work properly.
- An uplink power control method includes the following steps:
- the terminal device determines a target transmit power of each uplink channel/signal transmitted in the current uplink subframe
- the terminal device divides the transmission time of the uplink channel/signal in the current uplink subframe into multiple transmission time segments, where the uplink channel/signal included at any time in each transmission time period is the same, and each transmission time The uplink channel/signal contained in the segment is not exactly the same as the uplink channel/signal included in other transmission time periods;
- the terminal device performs power control on the target transmit power of the transmitted uplink channel/signal within the transmission time period in each of the transmission time periods to satisfy the power control, and the uplink channel transmitted in the transmission time period The sum of the transmission power of the /signal does not exceed the preset maximum transmit power of the terminal device.
- a terminal device comprising:
- a target power calculation module configured to determine, by the terminal device, a target transmit power of each uplink channel/signal transmitted in the current uplink subframe
- the time segment dividing module is configured to divide the transmission time of the uplink channel/signal in the current uplink subframe into multiple transmission time segments, where the uplink channel/signal included at any time in each transmission time period is the same, and each time The uplink channel/signal included in the transmission period is not exactly the same as the uplink channel/signal included in the other transmission period;
- the power control module is configured to: in each of the transmission periods, the transmission period The target transmit power of the transmitted uplink channel/signal is subjected to power control to satisfy the power control, and the sum of the transmit power of the uplink channel/signal transmitted during the transmission period does not exceed the preset maximum transmit of the terminal device. power.
- the transmission time of the uplink channel/signal in one uplink subframe is divided into multiple transmission time periods by the transmission time, because the transmission time advance corresponding to each uplink channel/signal in an uplink subframe is different.
- the segment is a unit for performing power control on each uplink channel/signal in the uplink subframe to meet the power control, and the uplink channel/signal transmission transmitted by the terminal device in the current uplink subframe in each transmission period The sum of the powers does not exceed the preset maximum transmit power, which ensures that the system can work normally.
- FIG. 1 is a flowchart of a main method for uplink power control according to an embodiment of the present invention
- FIG. 2 is a flowchart of a detailed method for uplink power control according to an embodiment of the present invention
- FIG. 3 is a schematic diagram of transmission in an embodiment of the present invention.
- FIG. 4 is a structural diagram of a terminal device according to an embodiment of the present invention. detailed description
- the transmission time of the uplink channel/signal in one uplink subframe is divided into multiple transmission time periods by the transmission time, because the transmission time advance corresponding to each uplink channel/signal in an uplink subframe is different.
- the segment is a unit for performing power control on each uplink channel/signal in the uplink subframe to meet the power control, and the uplink channel/signal transmission transmitted by the terminal device in the current uplink subframe in each transmission period The sum of the powers does not exceed the preset maximum transmit power, which ensures that the system can work normally.
- the uplink transmission times of the carriers belonging to the same TA group are the same, that is, the transmission time of the uplink channels on each carrier in the TA group is aligned in the same uplink subframe.
- the main method of uplink power control in this embodiment is as follows:
- Step 101 The terminal device determines a target transmit power of each uplink channel/signal (ie, an uplink channel, or an uplink signal, or an uplink channel and an uplink signal) transmitted in the current uplink subframe.
- each uplink channel/signal ie, an uplink channel, or an uplink signal, or an uplink channel and an uplink signal
- Step 102 The terminal device divides the transmission time of the uplink channel/signal in the current uplink subframe into multiple transmission time segments, where the uplink channel/signal included at any time in each transmission time period is the same, and each The uplink channel/signal included in the transmission period is not exactly the same as the uplink channel/signal included in other transmission periods.
- the uplink channel/signal transmitted on different subframes is a different uplink channel/signal
- the uplink channel/signal transmitted on different carriers is a different uplink channel/signal.
- a certain carrier uploads PUCCH in subframe i and subframe i+1
- the PUCCH on subframe i and the PUCCH on subframe i+1 are different PUCCHs.
- both carriers 1 and 2 transmit PUSCH in subframe i
- the PUSCH on carrier 1 and the PUSCH on carrier 2 are different PUSCHs.
- Step 103 The terminal device performs power control on the target transmit power of the transmitted uplink channel/signal within the transmission time period in each of the transmission time periods, to satisfy the power control, and transmit the transmission time period.
- the sum of the transmit powers of the uplink channels/signals does not exceed the preset maximum transmit power of the terminal device.
- the terminal device may send the uplink channel/signal according to the power control transmission power.
- a preferred implementation manner of step 102 is: the terminal device is configured according to each uplink channel/signal corresponding to the sending time.
- the interleaving amount is used to divide the transmission time of the uplink channel/signal in the current uplink subframe into multiple transmission time segments, where the number of transmission time segments is different in the uplink carrier aggregated or activated by the terminal device.
- the number of advances in the transmission time is increased by one. Specifically, the transmission time period is divided according to the transmission start time and/or the end time of each uplink channel/signal.
- the terminal device determines, in each of the transmission time periods, a target transmission power of an uplink channel/signal in a current uplink subframe in the transmission period and other existing transmissions in the time period. Whether the sum of the transmission powers of the uplink channel/signal exceeds the preset maximum transmission power.
- the terminal device When the judgment is exceeded, the terminal device performs power control on the target transmit power of the uplink channel/signal that is transmitted during the transmission time period, and after the power control is satisfied, the current uplink sub-segment within the transmission time period.
- the sum of the transmit power of the uplink channel/signal in the frame and the transmit power of the other uplink channel/signal does not exceed the preset maximum transmit power.
- the terminal device uses the target transmit power of the uplink channel/signal in the current uplink subframe as the transmit power of the uplink channel/signal in the time period.
- the specific method for the terminal device to perform power control on the target transmit power of the uplink channel/signal that is transmitted during the transmission time period is:
- the target transmit power is subjected to power control, and after the power control is performed, the sum of the transmit powers of the uplink channels/signals in the current uplink subframe does not exceed the currently available maximum transmit power in the transmit time period, and the currently available maximum transmit power Transmit power is the preset maximum transmit power minus the transmit power of the other uplink channel/signal; or
- the target device transmits the target transmit power of the other uplink channel/signal that is transmitted during the sending time period, and the uplink channel/signal in the current uplink subframe that is transmitted during the sending time period.
- the target transmit power is used for power control, and after the power control is performed, the sum of the transmit power of the uplink channel/signal in the current uplink subframe and the transmit power of the other uplink channel/signal is not within the transmit time period.
- the terminal device performs power control on the target transmit power of the uplink channel/signal in the current uplink subframe that is transmitted in the sending time period, after the power control is satisfied, in the sending time period, The sum of the transmit powers of the uplink channels/signals in the current uplink subframe does not exceed the preset maximum transmit power.
- the other uplink channel/signal may include: an uplink channel/signal in a previous adjacent uplink subframe of the current uplink subframe that is transmitted within a transmission period, and/or An uplink channel/signal in a subsequent adjacent uplink subframe of the current uplink subframe that is transmitted within a transmission period; or
- the other uplink channels/signals are empty sets, that is, there are no other uplink channel/signal transmissions during the transmission period.
- Case 1 When the other uplink channel/signal included in one transmission time period is an uplink channel/signal in a previous adjacent uplink subframe of a current uplink subframe that is transmitted within the transmission time period, if Determining, by the sum of the target transmit power of the uplink channel/signal in the current uplink subframe and the transmit power of the other uplink channel/signal that is transmitted during the time period, exceeding the preset maximum transmit power The terminal device performs power control on the target transmit power of the uplink channel/signal that is transmitted during the sending time period, and specifically includes: the terminal device is based on the other uplinks that are transmitted during the sending time period.
- Channel/signal transmit power performing power control on the target transmit power of the uplink channel/signal in the current uplink subframe, to satisfy the power control, the uplink channel/signal transmit power in the current uplink subframe And not exceeding the currently available maximum transmit power, the currently available maximum transmit power being the preset maximum transmit
- the transmit power is subtracted from the transmit power of the other uplink channel/signal; or, the terminal device transmits the target transmit power of the other uplink channel/signal that is transmitted during the transmission time period, and simultaneously in the current uplink subframe
- the target transmit power of the transmitted uplink channel/signal is subjected to power control to satisfy the power control, and the sum of the transmit power of the uplink channel/signal in the current uplink subframe and the transmit power of the other uplink channel/signal does not exceed The preset maximum transmit power.
- Case 2 when the other uplink channel/signal included in one transmission time period is an uplink channel/signal in a subsequent adjacent uplink subframe of the current uplink subframe that exists within the transmission time period, if Determining, by the sum of the target transmit power of the uplink channel/signal in the current uplink subframe and the transmit power of the other uplink channel/signal that is transmitted during the time period, exceeding the preset maximum transmit power
- the terminal device performs power control on the target transmit power of the uplink channel/signal that is transmitted during the sending time period, and specifically includes: the terminal device is configured to use the other uplink that is transmitted during the sending time period.
- the target transmit power of the channel/signal and the target transmit power of the uplink channel/signal in the current uplink subframe are subjected to power control to satisfy the uplink channel/signal simultaneously transmitted in the current uplink subframe after the power control is performed.
- the sum of the transmit power and the transmit power of the other uplink channel/signal does not exceed the preset maximum transmit power.
- Case 3 When the other uplink channel/signal included in a transmission time period is an empty set, that is, the uplink channel/signal transmitted in the previous adjacent uplink subframe of the current uplink subframe is not included in the transmission period. And not including the uplink channel/signal transmitted in the next adjacent uplink subframe of the current uplink subframe, if it is determined that the target transmit power of the uplink channel/signal in the current uplink subframe in the transmission period is during the time period And a sum of transmit powers of the other uplink channels/signals that are transmitted in excess of the preset maximum transmit power, and the target device transmits the target transmit power of the uplink channel/signal that is transmitted during the transmission time period.
- Performing power control specifically includes: the terminal device pair is in the The target transmit power of the uplink channel/signal in the current uplink subframe that is transmitted during the transmission is subjected to power control, and after the power control is satisfied, the uplink channel in the current uplink subframe is in the transmission time period/ The sum of the transmit powers of the signals does not exceed the preset maximum transmit power.
- the terminal device performs power control on the target transmit power of the uplink channel/signal that needs to be power-controlled during the transmission time period in each of the transmission time periods, and specifically includes:
- the terminal device performs a proportional power reduction on the target transmit power of the uplink channel/signal that needs to be power-controlled during the transmission time period, and obtains the uplink channel/signal after the power control is obtained.
- the transmission power in the transmission period is obtained.
- the terminal device performs power reduction on the uplink channel/signal that needs to be power-controlled during the transmission time period according to the channel/signal priority from low to high, and has the same channel/signal
- the target transmit power of the plurality of channels/signals of the priority is equalized power reduction, and the transmit power of the uplink channel/signal in the transmission time period after power control is obtained, where, for the uplink channel that does not need to reduce power, And determining a target transmit power of the uplink channel/signal during the transmission period after the power control.
- the terminal device performs an equal power reduction on a target transmit power of an uplink channel/signal in the same frequency band in the uplink channel/signal that needs to be power-controlled during the transmission time period,
- the target transmission power of the uplink channel/signal in different frequency bands in the uplink channel/signal that needs to be subjected to power control in the transmission period is reduced according to the power reduction ratio low coefficient corresponding to the frequency band, and the power is obtained.
- the transmission power of each uplink channel/signal after the transmission period is controlled.
- the terminal device has the same channel/signal priority in the uplink channel/signal that needs to be power-controlled during the transmission time period according to the order of channel/signal priority from low to high.
- the target transmit power of the channel/signal in the same frequency band is equalized power reduction, and has the same channel/signal priority in the uplink channel/signal that needs to be power controlled for transmission in the transmission time period.
- the target transmit power of the channel/signal in different frequency bands is reduced according to the power reduction ratio coefficient corresponding to the frequency band, and the transmit power of each uplink channel/signal in the transmission time period after power control is obtained, where An uplink channel/signal with a scale factor of 1, determining its target transmit power as the transmit power of the uplink channel/signal during the transmission period after power control, and determining the target for the uplink channel/signal that does not require power reduction
- the uplink channel/signal is after the transmit power is power control Said transmission power of the transmission time.
- the uplink channel/signal that needs to perform power control is an uplink channel/signal in a current uplink subframe that is transmitted during the transmission time period, or is in the sending, according to the description of the foregoing three specific situations.
- the uplink channel/signal in the current uplink subframe of the transmission and the other uplink signals transmitted during the transmission period are present in the time period.
- the channel/signal priority is:
- PUCCH>PUSCH carrying UCI>PUSCH SRS not carrying UCI;
- PRACH>PUCCH>PUSCH carrying UCI>PUSCH SRS not carrying UCI;
- PUCCH>PRACH>PUSCH carrying UCI>PUSCH SRS not carrying UCI.
- the SRS includes aperiodic SRS (Aperiodic-SRS) and periodic SRS (Responsive SRS), and the aperiodic SRS priority is higher than or equal to the periodic SRS.
- Aperiodic-SRS Aperiodic-SRS
- periodic SRS Responsive SRS
- the power channel is reduced in the same ratio of the lowest priority uplink channel/signal (corresponding to the foregoing mode 2), or the power reduction is performed according to the power reduction ratio coefficient corresponding to the frequency band (corresponding to the above)
- the fourth method if the power is reduced to 0, and the total power of the uplink channel/signal of the terminal device in the transmission period is still higher than the maximum transmission power, the equal channel power is reduced for the lower priority channel/signal ( Corresponding to the above method 2), or according to the power reduction ratio coefficient corresponding to the frequency band, the power reduction is performed (corresponding to the above method 4), and so on, until the total power of the uplink channel/signal of the terminal device in the transmission time period is not high.
- the transmit power remains unchanged, that is, its target transmit power is the transmit power after power control.
- the method further includes: the terminal device: each uplink channel in the current uplink subframe/ The minimum value of the power-controlled transmission power of the signal in each transmission period is determined as the transmission power of the uplink channel/signal in each transmission period in the current subframe, and is sent in the current uplink subframe according to the transmission power.
- Each upstream channel/signal is determined as the transmission power of the uplink channel/signal in each transmission period in the current subframe, and is sent in the current uplink subframe according to the transmission power.
- the method further includes: the terminal device respectively according to each uplink channel in the current uplink subframe
- the /signal transmits the uplink channel/signal in the current uplink subframe via the power-controlled transmit power during each transmission period.
- the method is applicable to an uplink channel/signal using BPSK (Binary Phase Shift Keying) or QPSK (Quadature Phase Shift Keying) modulation.
- the preset maximum transmit power in the embodiment includes a maximum transmit power allowed by the terminal device and/or a maximum transmit power allowed in each frequency band.
- the uplink channel/signal in this embodiment includes, but is not limited to, PUCCH, PUSCH, PRACH, SRS, etc., where the uplink channel includes but is not limited to PUCCH, PUSCH, PRACH, etc., and the uplink signals include, but are not limited to, SRS and the like.
- the transmit power in the subsequent transmit subframe may be based on the transmit power of the first transmit subframe, and the uplink channel/signal power in subsequent subframes.
- the control is based on the PRACH transmit power (that is, the PRACH transmit power is fixed, for example, the PRACH transmit power can be merged into the preset maximum transmit power, and the difference between the preset maximum transmit power and the PRACH transmit power is used as the current use. Preset maximum transmit power);
- the base station can preferentially transmit the PUCCH on the primary component carrier (PCC) to ensure the transmit power of the PUCCH as much as possible; or the base station can use the uplink carrier with the largest TA as the PCC.
- PCC primary component carrier
- the power reduction ratio coefficient is pre-agreed by the terminal device and the base station, or is notified to the terminal device by the base station by using a high layer signaling or a PDCCH (Physical Downlink Control Channel) signaling, where the high layer signaling includes RRC (Radio Resource Control) signaling, MAC (Medium
- the power reduction scaling factor can be configured based on different frequency band characteristics, such as frequency location, bandwidth, channel state, configured transmission information type, traffic, and the like.
- the power reduction ratio coefficients of different frequency bands may be the same or different.
- the configuration may be fixed, and no agreement or notification is required.
- the above method simultaneously performs intra-band (in-band) and inter-band (cross-band) CA (carrier aggregation) scenarios.
- the above method is applicable to both FDD and TDD modes.
- the detailed method of uplink power control in this embodiment is as follows:
- Step 201 The terminal device determines a target transmit power of each uplink channel/signal transmitted in the current uplink subframe.
- Step 202 The terminal device divides the transmission time of the uplink channel/signal in the current uplink subframe into multiple transmission time segments.
- Step 203 In time sequence, for each transmission time period, the terminal device determines the sum of the target transmit power of the uplink channel/signal in the current uplink subframe and the transmit power of other uplink channels/signals that are transmitted during the time period. Whether the preset maximum transmit power is exceeded, and if yes, proceed to step 204, otherwise proceed to step 205.
- Step 204 The terminal device performs power control on the target transmit power of the uplink channel/signal in the current uplink subframe, and/or on other uplink channels/signals that are transmitted during the time period to meet the power. After the control, the sum of the transmit power of the uplink channel/signal in the current uplink subframe and the transmit power of the other uplink channel/signal does not exceed the preset maximum transmit power.
- Step 205 The terminal device uses the target transmit power of the uplink channel/signal in the current uplink subframe as the transmit power of the uplink channel/signal in the time period.
- Step 206 The terminal device sends the uplink channel/signal according to the power control transmission power.
- a UE User Equipment, or a terminal device aggregates 4 carriers for uplink transmission. Since the TAs are different, the uplink transmission times of carriers 1 and 2 are earlier than carriers 3 and 4.
- the SC-FDMA (Single Carrier-Frequency Division Multiple Access) symbol the transmission situation is as shown in FIG. 3, and the UE determines the specific behavior of the transmission power of the channel in the subframe i (ie, the current subframe). as follows:
- the first transmission period t1 there are PUCCH on carrier 1 and PUSCH on carrier 2. And the PUSCH on the carrier 3 in the previous adjacent subframe is simultaneously transmitted.
- the PUCCH on the carrier 1 and the PUSCH on the carrier 2 3 4 are simultaneously transmitted, and the third segment is transmitted in the time period t3.
- the PUSCH on the carriers 3 and 4 and the PUCCH on the carrier 1 in the next adjacent subframe and the PUSCH on the carrier 2 are simultaneously transmitted, and the UE performs power control on the above three transmission time periods, respectively, for each transmission.
- the transmit power of the uplink channel/signal transmitted in the previous adjacent uplink subframe of the current uplink subframe, and/or the next neighbor of the current uplink subframe need to be considered during the transmission period.
- the transmit power of the uplink channel/signal transmitted in the uplink subframe the details are as follows:
- the UE needs to consider the transmit power of the PUSCH on the carrier 3 in the subframe i-1, and the UE determines the current subframe transmitted in the transmission period. Whether the sum of the target transmit power of the uplink channel/signal and the transmit power of the uplink channel/signal transmitted simultaneously in the previous adjacent subframe of the current subframe exceeds the maximum transmit power allowed by the UE ⁇ .
- the power reduction is not required in the transmission period, and the target transmission power of each uplink channel/signal is determined as the power of the power control, that is, ⁇ ⁇ '), (0)
- the target transmission power of each uplink channel/signal is determined as the power of the power control, that is, ⁇ ⁇ '), (0)
- the sum of the transmit power of the uplink channel/signal does not exceed the currently available maximum transmit power, wherein the currently available maximum transmit power is the maximum transmit power allowed by the UE minus the uplink channel/signal in the previous adjacent subframe of the current subframe.
- the transmission power is as follows: Method 1: According to formula (1), the target transmission power of the uplink channel/signal transmitted simultaneously in the current subframe in the transmission period is proportionally reduced, where c is the carrier number, and i is the sub- The frame number is the sum of the transmit powers of the uplink channels/signals transmitted in the previous adjacent uplink subframe of the current subframe in the transmission period. Specifically, there is no SRS and PRACH transmission in the transmission period.
- Method 2 According to the channel/signal priority, the target transmit power of the channel/signal with the lowest priority transmitted simultaneously in the current subframe in the transmission period is proportionally reduced. First, the target transmit power of the channel/signal with the lowest priority is proportionally reduced. Taking the lowest SRS priority as an example, the target transmit power of the SRS (if SRS exists) is reduced according to formula (2), if there is a non- If w(i) of 0, the power reduction ends, and the target transmission power of the channels/signals (such as PUCCH, PRACH, and PUSCH) of other priorities is kept unchanged, and the power is controlled as the uplink channel/signal in the transmission period.
- the target transmit power of the SRS if SRS exists
- the target transmit power of the channels/signals such as PUCCH, PRACH, and PUSCH
- Equation (3) is equivalent to finding w (i) that satisfies the formula (proportion The coefficient) determines the power of the PUCCH and PUSCH on the carrier 1 and the carrier 2 in the current subframe after the power control in the current transmission period.
- J) is ( ) ⁇ ⁇
- the above method can also be replaced with the current subframe that is simultaneously transmitted during the transmission period. It is proportional to the target transmit power of the channel/signal in the previous subframe (reuse method 1 above) or power reduction based on channel/signal priority (reuse method 2 above). The method is more suitable for the UE to transmit the transmit power after the power control in the segment for different transmission time periods, that is, the same uplink channel/signal may have different transmit powers in different transmission periods in one subframe.
- the PUSCH transmit power on the carrier 3 in the previous uplink subframe is considered, since the PUSCH transmit power of the carrier 3 is determined in the previous uplink subframe, consideration has been given.
- the PUCCH on the carrier 1 and the PUSCH on the carrier 2 in the current subframe simultaneously transmitted at the partial transmission time the maximum transmission power allowed by the UE is subtracted from the maximum transmission power of the previous subframe in the current subframe.
- the PUSCH transmit power is allocated on the PUCCH on the carrier 1 and the PUSCH on the carrier 2, which is equivalent to the uplink channel/signal in the current uplink subframe and the uplink channel in the previous uplink subframe in the transmission time period.
- the target transmit power of the /signal is simultaneously controlled by using method 1 or method 2.
- method 1 it is ensured that the uplink channel/signal simultaneously transmitted in the current subframe and the previous subframe in the transmission period is reduced by the same proportion of power, Method 2, considering that the PUCCH channel has the highest priority, its transmit power may not be reduced.
- the tl time segment in the current subframe is the last time segment in the previous adjacent subframe, and has been applied to the PUSCH and carrier 1 on the carrier 3 during the transmission time of the previous uplink subframe.
- the target transmit power of the PUSCH on the PUCCH and the carrier 2 is power-controlled based on the maximum transmit power of the terminal. Therefore, if the UE saves the power control result in the last time period in the previous subframe, it can directly serve as the current subframe.
- the UE determines the sum of the target transmission powers of the uplink channel/signal in the current subframe in the transmission period. Whether it exceeds
- the maximum transmit power allowed by the UE When determining J, + +, ⁇ + W , no power reduction is required during the transmission period, and the target transmit power of each channel/signal is determined as the transmit power after power control, ie (0) (0 (0 (0 (0 (0 (0 (0 (0 (0 (0 (0 (0 (0
- the target transmit power of the channel/signal with the lowest priority transmitted at the same time is proportionally reduced.
- the target transmit power of the channel/signal with the lowest priority is proportionally reduced, taking the lowest SRS priority as an example, according to the formula (5)
- the target transmit power of the SRS (if there is SRS) is proportionally reduced. If there is non-zero w(i), the power reduction ends, and other priority channels/signals (such as PUCCH, PRACH, and PUSCH) are maintained.
- the target transmit power is unchanged as the power of the uplink channel/signal after the power control in the transmission period; if there is no non-zero w(i) (ie, the target transmit power of the SRS is reduced to 0, the remaining channel/signal If the sum of the target transmit powers exceeds the maximum transmit power allowed by the UE, the target transmit power of the channel/signal with the second lowest priority is further reduced in proportion, and the PUSCH priority of the unsubscribed UCI is taken as an example.
- Equation (6) reduces the target transmit power of the PUSCH that does not carry the UCI, where j is the number of the PUSCH carrying the UCI, and so on, until the maximum transmit power limit condition is met; specifically, for the transmission time period, If there is no SRS and PRACH transmission, the PUSCH is firstly scaled down.
- Equation (6) is equivalent to W ® ⁇ (' ⁇ ) + (0 + ⁇ (0 - ⁇ , find w(i) that satisfies the formula (proportional coefficient) value, determining the transmit power Ppuccw of the PUCCH on carrier 1 in the current subframe during power control during the current transmission period
- the UE For the t3 time period, due to the PUCCH transmission on carrier 1 in the next adjacent subframe (subframe i+1) For PUSCH transmission on carrier 2, the UE first determines the target transmission power PpuccH.1 of the PUCCH on carrier 1 in the next adjacent subframe (subframe i+1) ( '' + and the target transmission of PUSCH on carrier 2) Power PpuscH . 2 i + D. The power control of the UE for this time period needs to consider the PUCCH on carrier 1 in subframe i+1 and the target transmit power of PUSCH on carrier 2, so the UE determines the transmission during this time period.
- the target transmission power of each channel/signal is determined as the power of the power control, that is, (0 (0 (0 (' 1) when determining 'f + 1) + 0 " + 1) + ⁇ S) + ⁇ i ⁇ ⁇ CMAx i, ⁇ "At least the target transmit power of the PUSCH on carriers 3 and 4 is power controlled during the transmission period to satisfy the current control after power control
- the transmit power of the uplink channel/signal in the frame during the time period and the next adjacent subframe While the upstream channel transmit power / signal transmission does not exceed the maximum allowed UE transmit power as follows:
- Method 1 According to formula (7), the ratio of the uplink channel/signal in the current subframe and the target transmit power of the uplink channel/signal in the subsequent subframe is reduced in the same period, where c is the carrier number And i is the subframe number; specifically, in the transmission period, there is no SRS and PRACH transmission, and the PUCCH on carrier 1 and the PUSCH on carrier 2 in the subsequent adjacent subframe are simultaneously transmitted, then the formula 7) Equivalent to
- W(f) + + ( ⁇ ) find the W (i) (proportional coefficient) value that satisfies the formula, and determine the transmit power of the PUCCH and PUSCH on the carriers 1 and 2 in the next subframe after the power control in the current transmission period.
- J is .
- Method 2 Simultaneous transmission over the transmission time period according to channel/signal priority
- the target transmit power of the channel/signal having the lowest priority among the channels/signals in the current subframe and the latter subframe is reduced in proportion.
- the target transmit power of the channel/signal with the lowest priority is proportionally reduced.
- the target transmit power of the SRS (if SRS exists) is reduced according to formula (8), if there is a non- If w(i) of 0, the power reduction ends, and the target transmission power of the channels/signals (such as PUCCH, PRACH, and PUSCH) of other priorities are kept unchanged, and the power is controlled as the uplink channel/signal in the transmission period.
- the channels/signals such as PUCCH, PRACH, and PUSCH
- Non-zero w(i) ie, the sum of the target transmit power of the remaining channel/signal when the target transmit power of the SRS is reduced to 0 is still greater than the maximum transmit power allowed by the UE
- the channel with the second lowest priority needs to be further
- the target transmit power of the signal is reduced in proportion, and the PUSCH priority of the non-bearing UCI is taken as an example.
- the target transmit power of the PUSCH that does not carry the UCI is reduced according to the formula (9), where j1 is the bearer in the current subframe.
- the number of the PUSCH of the UCI, j2 is the number of the PUSCH carrying the UCI in the subsequent subframe, and so on, until the maximum transmit power constraint condition is met; specifically, for the transmission period, if there is no SRS and PRACH transmission, First, the PUSCH is scaled down, and the formula (9) is equivalent to
- the uplink channel/signal in the time period is respectively transmitted according to the power control transmission power in each time period, that is, each uplink channel is in different transmission time.
- the transmit power in the segment may be different; or, for each uplink channel/signal, the UE transmits the uplink channel in the current uplink subframe according to the minimum transmit power of the power control of the uplink channel in different transmission time periods, that is, each The uplink channels have the same transmit power in different transmission time periods.
- the latter transmission mode is used for high-order modulated PUSCH (such as 16QAM 64QAM modulation).
- the maximum transmit power allowed by the UE is replaced by the maximum transmit power allowed by the frequency band, that is, when the multiple carriers are in the same frequency band, the maximum transmit power allowed based on the frequency band may also be used according to the foregoing solution.
- Performing power reduction to ensure that the sum of the transmission powers of the channels/signals after the power reduction does not exceed the maximum transmit power allowed by the frequency band; if the UE also operates the carriers in other frequency bands simultaneously, each frequency band may be respectively based on the above method.
- the maximum transmit power allowed by the frequency band is used for power reduction.
- the above method is also applicable when the transmission position is changed between PUCCH, PUSCH, PRACH, SRS or other uplink channel/signal, that is, any combination transmission between PUCCH, PUSCH, PRACH, SRS or other uplink channel/signal, the above methods are all applicable. Be applicable.
- the terminal device in this embodiment includes: a target power calculation module 401, a time segment division module 402, and a power control module 403.
- the target power calculation module 401 is configured to determine, by the terminal device, a target transmit power of each uplink channel/signal transmitted in the current uplink subframe.
- the time segment dividing module 402 is configured to divide the transmission time of the uplink channel/signal in the current uplink subframe into multiple transmission time segments.
- the uplink channel/signal included at any time in each transmission period is the same, and the uplink channel/signal included in each transmission period is not completely the same as the uplink channel/signal included in other transmission periods.
- the power control module 403 is configured to perform power control on the target transmit power of the transmitted uplink channel/signal within the transmission time period during each of the transmission time periods, to satisfy the power control, and transmit the transmission time period.
- the sum of the transmit powers of the uplink channels/signals does not exceed the preset maximum transmit power of the terminal device.
- the time segment dividing module 402 is specifically configured to: divide, according to the sending time advance amount corresponding to each uplink channel/signal, the transmission time of the uplink channel/signal in the current uplink subframe into multiple sending time segments, where the sending time period is The number is the number of different transmission time advances in the uplink carrier aggregated or activated by the terminal device plus one.
- the power control module 403 is specifically used to:
- the target transmit power of the uplink channel/signal in the current uplink subframe is used as the uplink channel.
- the power control module 403 is specifically configured to:
- the target transmit power of the uplink channel/signal in the current uplink subframe that is transmitted during the sending time period After the power control is performed, the sum of the transmit powers of the uplink channels/signals in the current uplink subframe does not exceed the currently available maximum transmit power, and the currently available maximum transmit power is Predicted maximum hair The transmit power minus the transmit power of the other uplink channel/signal;
- the target transmit power of the other uplink channel/signal that is transmitted during the transmission time period and the target of the uplink channel/signal in the current uplink subframe that is transmitted during the transmission time period.
- the sum of the transmit power of the uplink channel/signal in the current uplink subframe and the transmit power of the other uplink channel/signal does not exceed the sum of the transmit power of the uplink frame/signal in the current uplink subframe. Predicting the maximum transmit power;
- the uplink channel/signal that needs to be power-controlled during the transmission time period is gradually reduced in power according to channel/signal priority from low to high, and is performed on multiple channels having the same channel/signal priority.
- the target transmit power of the channel/signal is reduced in equal power, and the transmit power of the uplink channel/signal in the transmission period after power control is obtained, where the target is determined for the uplink channel/signal that does not need to be reduced in power.
- Transmit power is the transmit power of the uplink channel/signal during the transmission period after power control;
- the target transmit power of the uplink channel/signal in different frequency bands in the uplink channel/signal that needs to be power-controlled is reduced according to the power-down ratio low coefficient corresponding to the frequency band, and the uplink channel is obtained after power control. / transmit power of the signal during the transmission period;
- the target transmission power of the channel/signal is subjected to equal power reduction, and the channels in different frequency bands having the same channel/signal priority in the uplink channel/signal that needs to be power-controlled within the transmission time period are transmitted.
- the target transmit power of the signal is reduced according to the power reduction ratio coefficient corresponding to the frequency band, and the transmit power of each uplink channel/signal in the transmission time period after power control is obtained, where the power reduction ratio coefficient is 1.
- Uplink channel/signal determining that the target transmit power is the power of the uplink channel/signal during the transmission period after the power control
- the transmit power for the uplink channel/signal that does not need to be reduced in power, determine the target transmit power as the transmit power of the uplink channel/signal in the transmit time period after power control;
- the uplink channel/signal that needs to be power controlled is an uplink channel/signal in a current uplink subframe that is transmitted during the sending time period, or is a current uplink that is transmitted during the sending time period.
- the channel/signal priority is:
- PUCCH> PRACH> PUSCH carrying UCI> PUSCH SRS not carrying UCI.
- the other uplink channel/signal in the embodiment includes: an uplink channel/signal in a previous adjacent uplink subframe of the current uplink subframe, and/or a current uplink subframe, which is transmitted in the sending time period.
- the uplink channel/signal in the next adjacent uplink subframe; or the other uplink channel/signal is an empty set.
- the uplink channel/signal in the current uplink subframe is sent according to the power control-controlled transmit power in each transmission time period according to each uplink channel/signal in the current uplink subframe.
- the uplink channel/signal is : Upstream channel/signal in the current uplink subframe using BPSK or QPSK modulation.
- the preset maximum transmit power in this embodiment includes the maximum transmit power allowed by the terminal device and/or the maximum transmit power allowed in each frequency band.
- the transmission time of the uplink channel/signal of the uplink subframe is divided into multiple transmission time periods, which are in units of the transmission time period, because the transmission time advance amounts corresponding to the uplink channels/signals in the uplink subframe are different.
- Performing power control on each uplink channel/signal of the uplink subframe to satisfy the power control, and the uplink signal transmitted during the transmission period The sum of the transmit power of the channel/signal does not exceed the preset maximum transmit power of the terminal device, which ensures that the system can work normally.
- the embodiments of the present invention provide multiple adjustment modes for uplink channels that require power reduction, and are applicable to uplink transmissions with different priorities and/or different frequency bands.
- embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
- computer-usable storage interfaces including but not limited to disk storage, CD-ROM, optical storage, etc.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
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Abstract
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Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12855295.7A EP2790446B1 (en) | 2011-12-08 | 2012-09-21 | Uplink power control method and device |
| KR1020147018916A KR20140100572A (ko) | 2011-12-08 | 2012-09-21 | 업링크 전력 제어 방법 및 장치 |
| US14/363,782 US9480023B2 (en) | 2011-12-08 | 2012-09-21 | Uplink power control method and device |
| JP2014545066A JP5878643B2 (ja) | 2011-12-08 | 2012-09-21 | アップリンク電力制御方法及び装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110405321.6 | 2011-12-08 | ||
| CN201110405321.6A CN102573030B (zh) | 2011-12-08 | 2011-12-08 | 一种上行功率控制方法及装置 |
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| WO2013082962A1 true WO2013082962A1 (zh) | 2013-06-13 |
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| PCT/CN2012/081713 Ceased WO2013082962A1 (zh) | 2011-12-08 | 2012-09-21 | 一种上行功率控制方法及装置 |
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| Country | Link |
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| US (1) | US9480023B2 (zh) |
| EP (1) | EP2790446B1 (zh) |
| JP (1) | JP5878643B2 (zh) |
| KR (1) | KR20140100572A (zh) |
| CN (1) | CN102573030B (zh) |
| WO (1) | WO2013082962A1 (zh) |
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Also Published As
| Publication number | Publication date |
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| EP2790446A4 (en) | 2014-10-15 |
| JP2015500593A (ja) | 2015-01-05 |
| US9480023B2 (en) | 2016-10-25 |
| US20140329555A1 (en) | 2014-11-06 |
| CN102573030A (zh) | 2012-07-11 |
| KR20140100572A (ko) | 2014-08-14 |
| EP2790446A1 (en) | 2014-10-15 |
| EP2790446B1 (en) | 2017-11-08 |
| JP5878643B2 (ja) | 2016-03-08 |
| CN102573030B (zh) | 2014-11-05 |
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