WO2015042942A1 - Procédé et dispositif de commande de puissance de liaison montante - Google Patents

Procédé et dispositif de commande de puissance de liaison montante Download PDF

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Publication number
WO2015042942A1
WO2015042942A1 PCT/CN2013/084695 CN2013084695W WO2015042942A1 WO 2015042942 A1 WO2015042942 A1 WO 2015042942A1 CN 2013084695 W CN2013084695 W CN 2013084695W WO 2015042942 A1 WO2015042942 A1 WO 2015042942A1
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WIPO (PCT)
Prior art keywords
power
communication node
factor
pusch
backoff
Prior art date
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PCT/CN2013/084695
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English (en)
Chinese (zh)
Inventor
肖登坤
吴彤
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.)
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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 PCT/CN2013/084695 priority Critical patent/WO2015042942A1/fr
Priority to CN201380002238.1A priority patent/CN104995970A/zh
Publication of WO2015042942A1 publication Critical patent/WO2015042942A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC

Definitions

  • the present invention relates to the field of communications, and in particular, to an uplink power control method and apparatus. Background technique
  • carrier aggregation is more and more widely used in the field of mobile communication.
  • the idea of “carrier aggregation” is as follows: The node configures and provides multiple component carriers (Components, CCs) for a user equipment (UE) that supports carrier aggregation for uplink and downlink communication, thereby supporting higher data rate transmission. .
  • Components, CCs component carriers
  • UE user equipment
  • the uplink power control mainly considers the physical uplink shared channel (Physical Uplink Share Channel) of the UE on each component carrier (referred to as a carrier).
  • PUSCH Physical Uplink Share Channel
  • the UE performs power backoff.
  • the existing PUSCH transmit power is backed up by:
  • the transmit power, PpuscH , ') is the PUSCH transmit power of the UE on the ''subframe', the cth carrier; ⁇ ⁇ ,. (0 indicates that the UE is on the first subframe, the 'carrier'
  • the PUSCH transmission power is a power backoff factor of the UE on the ''subframe), and the item is determined by the UE according to A MAX (0, uccn ii), and ⁇ ⁇ , ⁇ ( ⁇ , ⁇ represents a linear value.
  • the above prior art may cause the PUSCH transmission power after the fallback to be inappropriate, thereby affecting system performance.
  • the embodiments of the present invention provide an uplink power control method and device, which overcomes the problem that the PUSCH transmission power that may be caused by the back-off is inappropriate in the prior art, thereby affecting system performance.
  • the first aspect provides an uplink power control method, where the method includes: acquiring, by a user terminal, a power backoff parameter;
  • the power backoff parameter includes a power backoff scale factor, where the power backoff scale factor is a ratio of a first power backoff factor to a second power backoff factor, and the first power back
  • the fallback factor is a power backoff factor for the UE to roll back the first PUSCH transmit power
  • the second power backoff factor is a power backoff factor for the UE to roll back the second PUSCH transmit power
  • the first PUSCH transmission power and the second PUSCH transmission power exceeds the maximum transmission power of the UE, send the power to the first PUSCH according to the first interference value and the second interference value.
  • the second PUSCH transmission power is backed off, or the first PUSCH transmission power and the second PUSCH transmission power are backed off according to the power backoff ratio factor.
  • the performing, by using the power back-off scale factor, the first PUSCH transmit power and the second PUSCH transmit power are backed off, including:
  • the first power backoff factor and the second Power back factor including
  • W i represents the first power backoff factor
  • ⁇ represents the second power backoff factor, which is the power backoff scale factor, indicating a large-scale fading of the UE to the first communication node, Representing a large-scale fading of the UE to the second communication node, and being an integer greater than one.
  • the obtaining the foregoing according to the power backoff scaling factor including:
  • the first power back-off factor and the second power back-off factor respectively:
  • ⁇ MAX represents the maximum transmit power of the UE
  • ⁇ " ⁇ , 1 indicates the first ⁇ PUSCH transmission power
  • k indicates the second PUSCH transmission power
  • PH indicates the physical uplink control channel PUCCH transmission power of the UE
  • 2 k ⁇ K K is the first communication node and the second communication node The number of sums, and, K ⁇ 2 .
  • the first PUSCH transmit power and the second PUSCH transmit power according to the first interference value and the second interference value Roll back including:
  • the first power backoff is respectively obtained according to the first interference value and the second interference value a factor and the second power backoff factor, including:
  • the first power back-off factor and the second power back-off factor respectively:
  • the secondary serving cell includes
  • the acquiring power backoff parameter includes:
  • the second aspect provides an uplink power control method, where the method includes: the first communication node acquires a power backoff parameter, where
  • the power backoff parameter includes a power backoff ratio factor, and the power backoff scale factor is a ratio of a first power backoff factor to a second power backoff factor, where the first power backoff factor is a user terminal UE pair a power back-off factor of the first physical uplink shared channel PUSCH transmission power to perform back-off; the second power back-off factor is a power back-off factor for the UE to roll back the second PUSCH transmission power;
  • the power backoff parameter includes a first interference value, where the first interference value is interference received by a physical resource block sent by the UE to the first communication node;
  • the first interference value is used, if the sum of the first PUSCH transmit power and the second PUSCH transmit power exceeds a maximum transmit power of the UE, the UE according to the first interference value and the second interference value Rolling back the first PUSCH transmission power and the second PUSCH transmission power,
  • the second interference value is an interference value received by the UE from the second communication node and sent by the UE to the physical resource block of the second communication node;
  • the power back-off scale factor is used to: if the sum of the first PUSCH transmit power and the second PUSCH transmit power exceeds a maximum transmit power of the UE, the UE compares the first according to a power back-off scale factor
  • the PUSCH transmit power and the second PUSCH transmit power are backed off; wherein the first PUSCH transmit power is a PUSCH transmit power of the UE on a corresponding carrier of the first communication node, and the second PUSCH transmit power And transmitting, by the UE, a PUSCH transmission power on a corresponding carrier of the second communication node, where the first communication node is a communication node corresponding to the primary serving cell of the UE, and the second communication node is a secondary of the UE The communication node corresponding to the serving cell; or the first communication node is a communication node corresponding to the secondary serving cell of the UE, and the second communication node is a communication node corresponding to the primary serving cell of the UE.
  • the sending the first interference value or the power back-off scale factor to the UE includes:
  • the secondary serving cell in combination with the second aspect or the first possible implementation manner of the second aspect, includes a small cell.
  • a third aspect is an uplink power control device, where the device includes an acquiring unit and a power backing unit;
  • the obtaining unit is configured to acquire a power backoff parameter
  • the acquiring unit is further configured to acquire a first physical uplink shared channel PUSCH transmit power and a second PUSCH transmit power, where the first PUSCH transmit power is a PUSCH transmit power of the user terminal UE on a corresponding carrier of the first communication node
  • the second PUSCH transmission power is that the UE is on a corresponding carrier of the second communication node.
  • the PUSCH transmission power the first communication node is a communication node corresponding to the primary serving cell of the UE, the second communication node is a communication node corresponding to the secondary serving cell of the UE, and the power backoff parameter includes a power back-off scale factor, where the power back-off scale factor is a ratio of a first power back-off factor to a second power back-off factor, and the first power back-off factor is that the UE is to the first PUSCH a power back-off factor for the power to perform the back-off, the second power back-off factor is a power back-off factor for the UE to roll back the second PUSCH transmission power, or the power back-off parameter includes the first interference And a second interference value, where the first interference value is interference received by the UE to the physical resource block of the first communication node, and the second interference value is sent by the UE to the second communication The interference of the physical resource block of the node;
  • the power back-off unit is configured to: if the sum of the first PUSCH transmit power and the second PUSCH transmit power acquired by the acquiring unit exceeds a maximum transmit power of the UE, according to the acquired by the acquiring unit Determining, by the first interference value and the second interference value, the first PUSCH transmission power and the second PUSCH transmission power, or according to the power backoff ratio factor obtained by the acquiring unit The first PUSCH transmission power and the second PUSCH transmission power are backed off.
  • the power back-off unit includes an acquiring module and a power back-off module
  • the obtaining module is configured to obtain the first power backoff factor and the second power backoff factor respectively according to the power backoff scale factor;
  • the power back-off module is configured to perform back-off of the first PUSCH transmission power according to the first power back-off factor acquired by the acquiring module, and according to the second power acquired by the acquiring module The backoff factor rolls back the second PUSCH transmission power.
  • the acquiring module is configured to separately obtain the first power according to the power back-off scale factor a fallback factor and the second power backoff factor:
  • the acquiring module is specifically configured to use the power according to the following manner
  • the back-off scale factor obtains the first power back-off factor and the second power back-off factor, respectively:
  • the first power back-off factor and the second power back-off factor respectively:
  • the power back-off unit includes an acquiring module and a power back-off module
  • the acquiring module is configured to obtain the first power backoff factor and the second power backoff factor respectively according to the first interference value and the second interference value;
  • the power back-off module is configured to perform back-off of the first PUSCH transmission power according to the first power back-off factor acquired by the acquiring module, and according to the second power acquired by the acquiring module The backoff factor rolls back the second PUSCH transmission power.
  • the acquiring module is specifically configured to perform, according to the first interference value and the second interference value, respectively Obtaining the first power backoff factor and the second power backoff factor:
  • the first power back-off factor and the second power back-off factor respectively:
  • the secondary serving cell includes a small cell.
  • the acquiring unit is specifically configured to obtain the power backoff parameter as follows:
  • a fourth aspect provides an uplink power control apparatus, where the apparatus includes an acquiring unit and a sending unit;
  • the obtaining unit is configured to obtain a power backoff parameter, where
  • the power backoff parameter includes a power backoff ratio factor, and the power backoff scale factor is a ratio of a first power backoff factor to a second power backoff factor, where the first power backoff factor is a user terminal UE pair a power back-off factor of the first physical uplink shared channel PUSCH transmission power to perform back-off; the second power back-off factor is a power back-off factor for the UE to roll back the second PUSCH transmission power;
  • the power backoff parameter includes a first interference value, where the first interference value is interference received by the physical resource block sent by the UE to the first communication node, and the sending unit is configured to send the acquired by the acquiring unit.
  • the first interference value or the power back-off ratio factor is used by the UE, where the first interference value is used if the sum of the first PUSCH transmission power and the second PUSCH transmission power exceeds the The maximum transmit power of the UE, the UE, according to the first interference value and the second interference value, the first PUSCH transmit power and the second PUSCH transmit power are backed off, where the second interference value is An interference value received by the UE from the second communication node and sent by the UE to the physical resource block of the second communication node; or the power backoff ratio factor is used to send the first PUSCH The sum of the power and the second PUSCH transmit power exceeds the maximum transmit power of the UE, and the UE performs backoff on the first PUSCH transmit power and the second PUSCH transmit power according to
  • the sending unit is configured to send, by using the acquiring unit, the first interference value or the power back-off ratio factor to The UE:
  • the processor is configured to obtain a power backoff parameter
  • the power backoff parameter includes a power backoff scale factor, where the power backoff scale factor is a ratio of a first power backoff factor to a second power backoff factor, and the first power back
  • the fallback factor is a power backoff factor for the UE to roll back the first PUSCH transmit power
  • the second power backoff factor is a power backoff factor for the UE to roll back the second PUSCH transmit power
  • the processor is further configured to: if the sum of the first PUSCH transmit power and the second PUSCH transmit power exceeds a maximum transmit power of the UE, according to the first interference value and the second interference value pair The first PUSCH transmission power and the second PUSCH transmission power are backed off, or the first PUSCH transmission power and the second PUSCH transmission power are performed according to the power backoff ratio factor go back.
  • the processor is specifically configured to: according to the power back-off scale factor, the first
  • the PUSCH transmit power and the second PUSCH transmit power are rolled back:
  • the processor in combination with the first possible implementation manner of the fifth aspect, is configured to obtain the first power separately according to the power back-off scale factor in the following manner a fallback factor and the second power backoff factor:
  • the first power back-off factor and the second power back-off factor W where W i represents the first power back-off factor, and ⁇ represents a second power backoff factor, which is the power backoff scale factor, gi represents a large-scale fading of the UE to the first communication node, and represents a large-scale fading of the UE to the second communication node, Also, an integer greater than 1.
  • the processor is specifically configured to use the power according to the following manner
  • the back-off scale factor obtains the first power back-off factor and the second power back-off factor, respectively:
  • the first power back-off factor and the second power back-off factor respectively:
  • ⁇ MAX represents the maximum transmit power of the UE; ⁇ 1 indicates the first
  • ⁇ PUSCH transmission power indicating the second PUSCH transmission power; PUCCH indicating physical uplink control channel PUCCH transmission power of the UE; 2 k ⁇ K, K being the first communication node and the second communication node The number and, and, ⁇ ⁇ 1.
  • the processor is specifically configured to send, according to the first interference value and the second interference value, the first PUSCH transmit power, according to the fifth aspect, And the second PUSCH transmission power is rolled back:
  • the processor is specifically configured to perform, according to the first interference value and the second interference value, respectively Obtaining the first power backoff factor and the second power backoff factor:
  • the first power back-off factor and the second power back-off factor respectively:
  • the secondary serving cell includes a small cell.
  • the processor is specifically configured to obtain the power backoff parameter as follows:
  • a first communication node in a sixth aspect, includes a processor and a transmitter;
  • the processor is configured to obtain a power backoff parameter, where
  • the power backoff parameter includes a power backoff ratio factor
  • the power backoff scale factor is a ratio of a first power backoff factor to a second power backoff factor
  • the first power backoff factor is a user terminal UE pair a power back-off factor of the first physical uplink shared channel PUS CH transmit power for back-off
  • the second power back-off factor is a power back-off factor for the UE to roll back the second PUS CH transmit power
  • the P-CH transmit power is the PUSCH transmit power of the UE on the corresponding carrier of the first communication node
  • the second PUS CH transmit power is the PUS CH transmission of the UE on the corresponding carrier of the second communication node.
  • the first communication node is a communication node corresponding to the primary serving cell of the UE, and the second communication node is a communication node corresponding to the secondary serving cell of the UE; or the first communication node For a communication node corresponding to the secondary serving cell of the UE, where the second communication node is a communication node corresponding to the primary serving cell of the UE;
  • the power backoff parameter includes a first interference value, where the first interference value is interference received by the physical resource block sent by the U E to the first communication node;
  • the transmitter is configured to send the first interference value or the power back-off ratio factor acquired by the processor to the UE, where the first interference value or the power back-off scale factor is used for The first PUSCH transmission power and the second PUSCH transmission power are backed off.
  • the transmitter is configured to send, by using, the first interference value or the power back-off ratio factor obtained by the processor to The UE:
  • the UE obtains the power backoff parameter, so that when the UE determines that the sum of the first PUSCH transmission power and the second PUSCH transmission power exceeds the maximum transmission power of the UE, the power may be returned according to the power.
  • the first PUSCH transmit power and the second PUSCH transmit power are respectively backed off, and the first PUSCH transmit power and the second PUSCH transmit power are compared with the prior art.
  • the manner of performing the rollback, the method may separately roll back the first PUSCH transmit power and the second PUSCH transmit power, so that the power backoff mode of the UE is more flexible, and the UE power can be effectively enabled. More reasonable allocation to different carriers reduces system performance loss caused by power back-off of the UE.
  • 1 ⁇ / ⁇ £ is the number of the first cell, and the first cell is a small cell included in the secondary serving cell of the UE; 0 ⁇ ⁇ M, where M is the number of the second cell, The second cell is a secondary serving cell other than the first cell included in the secondary serving cell of the UE; ⁇ , indicating the first PUSCH transmission power; ⁇ indicating the third PUSCH transmission power, The third PUSCH transmission power is the PUSCH transmission power on the corresponding carrier of the second cell; w represents a power backoff factor that the UE performs backoff of the first PUSCH transmission power and the third PUSCH transmission power; Indicates the maximum transmit power of the UE; indicates the physical uplink control channel PUCCH transmit power of the UE; PpusCH ' indicates the fourth PUSCH transmit power, and the fourth PUSCH transmit power is the PUSCH transmission on the corresponding carrier of the first cell power.
  • an uplink power control apparatus includes an acquiring unit and a power backoff unit;
  • the acquiring unit is configured to acquire a first physical uplink shared channel PUSCH transmit power and a second PUSCH transmit power, where the first PUSCH transmit power is a PUSCH transmit power of the user terminal UE on a corresponding carrier of the first communication node, The second PUSCH transmission power is a PUSCH transmission power of the UE on a corresponding carrier of the second communication node, the first communication node is a communication node corresponding to the primary serving cell of the UE, and the second communication node is a communication node corresponding to the secondary serving cell of the UE;
  • the power backoff unit is configured to: if the sum of the first PUSCH transmit power and the second PUSCH transmit power acquired by the acquiring unit exceeds a maximum transmit power of the UE, the first PUSCH transmit power and third PUSCH transmit power for rollback
  • l ⁇ / ⁇ is the number of the first cell
  • the first cell is a small cell included in the secondary serving cell of the UE; 0 ⁇ ⁇ M, where M is the number of the second cell,
  • the second cell is a secondary serving cell other than the first cell included in the secondary serving cell of the UE;
  • ⁇ indicating the first PUSCH transmission power;
  • ⁇ indicating the third PUSCH transmission power
  • the third PUSCH transmission power is the PUSCH transmission power on the corresponding carrier of the second cell;
  • w represents the power backoff factor of the UE to back up the first PUSCH transmission power and the third PUSCH transmission power;
  • the maximum transmit power of the UE; the physical uplink control channel PUCCH transmit power of the UE; the PPUsCH ' indicates the fourth PUSCH transmit power, and the fourth PUSCH transmit power is the PUSCH transmit power on the corresponding carrier of the first cell .
  • a user terminal UE includes a transmitter, a receiver, and a memory coupled to the processor;
  • the processor is configured to
  • first PUSCH transmit power is a PUSCH transmit power of the UE on a corresponding carrier of the first communication node
  • second PUSCH transmit power Transmitting, by the UE, a PUSCH transmission power on a corresponding carrier of the second communication node, where the first communication node is a communication node corresponding to the primary serving cell of the UE, and the second communication node is a secondary serving cell of the UE Corresponding communication node;
  • the first PUSCH transmission power and the third PUSCH transmission power are retracted according to the following formula:
  • l ⁇ / ⁇ is the number of the first cell, and the first cell is a small cell included in the secondary serving cell of the UE; 0 ⁇ ⁇ M, where M is the number of the second cell, The second cell is a secondary serving cell other than the first cell included in the secondary serving cell of the UE; indicating the first PUSCH transmission power; and USCH ⁇ indicating the third PUSCH transmission power,
  • the third PUSCH transmission power is the PUSCH transmission power on the second cell corresponding carrier included in the second PUSCH transmission power;
  • w indicates that the UE sends the first PUSCH transmission power and the third PUSCH a power back-off factor for power back-off; a maximum power of the UE indicating the maximum transmit power of the UE; a physical uplink control channel PUCCH transmission power of the UE; Ppusc ' indicates a fourth PUSCH transmission power, and the fourth PUSCH transmission power is a PUSCH transmission power on a carrier corresponding to the first cell included in the second
  • the PUSCH transmission power backoff mode provided by the embodiment of the present invention is more targeted than the power backoff mode in the formula (2), and only in the small cell scenario, only the UE is removed.
  • the cell outside the small cell is backed up by the PUSCH transmission power on the corresponding carrier, and the PUSCH transmission power on the corresponding cell of the small cell is not backed off, and the PUSCH transmission power on the corresponding carrier of the small cell is not required. Power back is performed, so that the transmission rate of the small cell can be guaranteed to avoid affecting the system system.
  • the embodiment provides an uplink power control method and apparatus.
  • the tenth aspect provides an uplink power control method, where the method includes: the user terminal UE acquires the number of physical resource blocks PRB allocated by the second communication node to the UE, where the number of the PRBs is a communication node is determined to be sent to the second communication node according to the current power headroom PHR of the UE, where the first communication node is a communication node corresponding to the primary serving cell of the UE, and the second communication node is a communication node corresponding to the secondary serving cell of the UE;
  • the UE acquires PUSCH transmission power of the UE on the corresponding carrier of the second communication node according to the number of the PRBs.
  • the method before the acquiring, by the UE, the number of PRBs allocated by the second communication node to the UE, the method further includes: the UE managing the RRM by using a radio resource The first communication node transmitting station The current PHR of the UE is used to determine the number of the PRBs.
  • the UE acquires, by the second communication node, the
  • the number of physical resource blocks PRB of the UE including:
  • the secondary serving cell includes a small cell.
  • an uplink power control method includes: receiving, by a first communications node, a current power headroom PHR of the UE that is sent by a user terminal UE, where the first communications node is the UE a communication node corresponding to the primary serving cell;
  • the second communication node Determining, by the first communication node, the number of physical resource blocks PRB allocated by the second communication node to the UE according to the PHR, where the second communication node is a communication node corresponding to the secondary serving cell of the UE ;
  • the first communication node sends the number of the PRBs to the second communication node, so that the second communication node sends the number of the PRBs to the UE, and the number of the PRBs is used.
  • the first communications node determines, according to the PHR, the number of PRBs that the second communications node allocates to the UE, including:
  • the first communication node determines, according to the PHR and the following formula, the number of PRBs allocated by the second communication node to the UE:
  • M PUSC3 ⁇ 4C 10 ( )
  • c represents a carrier corresponding to the second communication node
  • M pusa ⁇ represents a number of PRBs allocated to the UE by the second communication node corresponding to the carrier
  • ⁇ ⁇ ( ⁇ ) represents an uplink target power value, that is, an uplink expected power value of the second communication node corresponding to the carrier
  • ⁇ represents a downlink path loss estimate
  • the first communication node sends the number of the PRBs to the first
  • the two communication nodes include:
  • the first communication node sends a request message to the second communication node, where the request message is used to request to add a cell corresponding to the second communication node as a secondary serving cell of the UE, where the request message Carrying the number of the PRBs.
  • the secondary serving cell includes a small cell.
  • the twelfth aspect provides an uplink power control method, where the method includes: acquiring, by the second communication node, the number of physical resource blocks PRB allocated by the second communication node to the user terminal UE, where The number is determined by the first communication node according to the current power headroom PHR of the UE, where the first communication node is a communication node corresponding to the primary serving cell of the UE, and the second communication node is the a communication node corresponding to the secondary serving cell of the UE;
  • the second communication node sends the number of the PRBs to the UE, and the number of the PRBs is used to obtain the PUSCH transmission power of the UE on the corresponding carrier of the second communication node.
  • the acquiring, by the second communications node, the number of PRBs allocated by the second communications node to the UE includes:
  • the second communications node in combination with the twelfth aspect or the first possible implementation manner of the twelfth aspect, sends the number of the PRBs to the UE , including:
  • the power control signaling is sent to the UE, and the power control signaling carries the number of the RRBs.
  • the secondary serving cell includes a small cell.
  • a user terminal UE includes an acquiring unit, and the acquiring unit is configured to acquire a physics that the second communication node allocates to the UE The number of the resource blocks PRB, where the number of the PRBs is determined by the first communication node according to the current power headroom PHR of the UE, and then sent to the second communication node, where the first communication node is a communication node corresponding to the primary serving cell of the UE, where the second communication node is a communication node corresponding to the secondary serving cell of the UE;
  • the acquiring unit is further configured to acquire, according to the number of the PRBs, a physical uplink shared channel PUSCH transmission power of the UE on a corresponding carrier of the second communication node.
  • the UE further includes a sending unit;
  • the sending unit is configured to send, by the radio resource management RRM, the current PHR of the UE to the first communications node, before the acquiring unit acquires the number of PRBs allocated by the second communications node to the UE,
  • the PHR is used to determine the number of the PRBs.
  • the acquiring unit is specifically configured to acquire, by using the following manner, a second communication node
  • the number of PRBs of the UE is specifically configured to acquire, by using the following manner, a second communication node The number of PRBs of the UE:
  • the secondary serving cell includes a small cell.
  • a first communication node in a fourteenth aspect, includes a receiving unit, a determining unit, and a sending unit;
  • the receiving unit is configured to receive a current power headroom PHR of the UE that is sent by the UE, where the first communications node is a communications node corresponding to the primary serving cell of the UE;
  • the determining unit is configured to determine, according to the PHR received by the receiving unit, a number of physical resource blocks PRB allocated by the second communications node to the UE, where the second communications node is the UE a communication node corresponding to the secondary serving cell;
  • the sending unit is configured to send the number of the PRBs determined by the determining unit to the second communications node, so that the second communications node sends the number of the PRBs to the UE,
  • the number of the PRBs is used to obtain a physical uplink shared channel PUSCH transmission power of the UE on a corresponding carrier of the second communication node.
  • the determining unit is specifically configured to receive, according to the receiving unit, the
  • PHR determining the number of PRBs allocated by the second communication node to the UE:
  • M PUSC3 ⁇ 4C M PUSC3 ⁇ 4C
  • c represents a carrier corresponding to the second communication node
  • M pusa ⁇ represents a number of PRBs allocated to the UE by the second communication node corresponding to the carrier
  • P. PUSC ' denotes an uplink target power value, that is, an uplink expected power value of the second communication node corresponding to the carrier
  • P denotes a downlink path loss estimate
  • ⁇ ') denotes a large-scale fading weight factor, 0 or 1 or 2.
  • the sending unit is specifically configured to determine, by the determining unit, The number of the PRBs is sent to the second communication node:
  • the secondary serving cell includes a small cell in combination with the second possible implementation manner of the fourteenth aspect to the fourteenth aspect.
  • a second communication node includes an obtaining unit and a sending unit;
  • the acquiring unit is configured to acquire the number of the physical resource blocks PRB allocated by the second communication node to the user terminal UE, where the number of the PRBs is determined by the first communication node according to the current PHR of the UE
  • the first communication node is a communication node corresponding to the primary serving cell of the UE
  • the second communication node is a communication node corresponding to the secondary serving cell of the UE;
  • the sending unit is configured to send the number of the PRBs acquired by the acquiring unit to the UE, where the number of the PRBs is used to acquire the physicality of the UE on a corresponding carrier of the second communication node.
  • the acquiring unit is specifically configured to acquire, according to the following manner, the number of PRBs that are allocated by the second communications node to the user terminal UE:
  • the sending unit is specifically configured to acquire the location acquired by the acquiring unit as follows The number of PRBs is sent to the UE:
  • the power control signaling is sent to the UE, and the power control signaling carries the number of the RRBs.
  • the secondary serving cell includes a small cell.
  • a user terminal UE includes a transmitter, a receiver, and a memory coupled to the processor;
  • the processor is configured to
  • the first communication node is a communication node corresponding to the primary serving cell of the UE
  • the second communication node is a communication node corresponding to the secondary serving cell of the UE
  • the transmitter is configured to: before the processor acquires the number of PRBs allocated by the second communication node to the UE, The radio resource management RRM sends the current PHR of the UE to the first communication node, where the PHR is used to determine the number of the PRBs.
  • the processor is specifically configured to acquire, by using, a second communication node
  • the number of PRBs of the UE is specifically configured to acquire, by using, a second communication node The number of PRBs of the UE:
  • the power control signaling carries the number of the RRBs.
  • the secondary serving cell includes a small cell.
  • a first communication node in a seventeenth aspect, includes a receiver, a processor, and a transmitter;
  • the receiver is configured to receive a current power headroom PHR of the UE that is sent by the UE, where the first communications node is a communications node corresponding to the primary serving cell of the UE;
  • the processor is configured to determine, according to the PHR received by the receiver, a number of physical resource blocks PRB allocated by the second communication node to the UE, where the second communication node is the UE a communication node corresponding to the secondary serving cell;
  • the transmitter is configured to send the number of the PRBs determined by the processor to the second communications node, so that the second communications node sends the number of the PRBs to the UE,
  • the number of the PRBs is used to obtain a physical uplink shared channel PUSCH transmission power of the UE on a corresponding carrier of the second communication node.
  • the processor is specifically configured to determine, according to the PHR received by the receiver, that the second communication node is allocated to the Number of PRBs of the UE:
  • M PUSC3 ⁇ 4C M PUSC3 ⁇ 4C
  • c represents a carrier corresponding to the second communication node
  • M pusa ⁇ represents a number of PRBs allocated to the UE by the second communication node corresponding to the carrier
  • P. PUSC ' denotes an uplink target power value, that is, an uplink expected power value of the second communication node corresponding to the carrier
  • P denotes a downlink path loss estimate
  • ⁇ ') denotes a large-scale fading weight factor, 0 or 1 or 2.
  • the transmitter is specifically configured to determine, by the processor, Sending the number of PRBs to the second communication node: sending a request message to the second communication node, the request message is used to request The cell corresponding to the second communication node is added as a secondary serving cell of the UE, where the request message carries the number of the PRBs.
  • the secondary serving cell includes a small cell.
  • a second communication node includes a receiver and a transmitter coupled to the processor;
  • the processor is configured to acquire, by the second communication node, the number of physical resource blocks PRB allocated to the user terminal UE, where the number of the PRBs is determined by the first communication node according to the current power of the UE Determined by the quantity PHR, where the first communication node is a communication node corresponding to the primary serving cell of the UE, and the second communication node is a communication node corresponding to the secondary serving cell of the UE;
  • the transmitter is configured to send the number of the PRBs that are acquired by the processor to the UE, where the number of the PRBs is used to acquire the physicality of the UE on a corresponding carrier of the second communication node.
  • the processor is specifically configured to obtain, according to the following manner, the number of PRBs allocated by the second communication node to the user terminal UE:
  • the transmitter is specifically configured to acquire the processor according to the following manner Sending the number of the PRBs to the UE:
  • the secondary serving cell includes a small cell.
  • the UE obtains the number of PRBs allocated by the second communication node to the UE by using the foregoing solution, where the number of PRBs is determined by the first communication node according to the PHR of the UE, and then the UE according to the Obtaining a second PUSCH transmission power, where the second PUSCH transmission power can ensure that the sum of the first PUSCH transmission power does not exceed the maximum transmission power of the UE, thus avoiding frequent In the case where the transmission power of the UE exceeds its rated maximum transmission power, the power consumption of the UE can be reduced.
  • FIG. 1 is an uplink power control method according to an embodiment of the present invention
  • FIG. 2 is another uplink power control method according to an embodiment of the present invention.
  • FIG. 3 is still another uplink power control method according to an embodiment of the present invention.
  • FIG. 4 is still another uplink power control method according to an embodiment of the present invention.
  • FIG. 5 is still another uplink power control method according to an embodiment of the present invention.
  • FIG. 6 is still another uplink power control method according to an embodiment of the present invention.
  • FIG. 7 is still another uplink power control method according to an embodiment of the present invention.
  • FIG. 8 is still another uplink power control method according to an embodiment of the present invention.
  • FIG. 9 is still another uplink power control method according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of an uplink power control method according to an embodiment of the present invention
  • FIG. 1 is a schematic diagram of an uplink power control method according to an embodiment of the present invention
  • FIG. 10 is a schematic diagram of an uplink power control method according to an embodiment of the present invention
  • FIG. 10 is a schematic diagram of an uplink power control method according to an embodiment of the present invention
  • FIG. 1 is a schematic diagram of an uplink power control method according to an embodiment of the present invention
  • FIG. 10 is a schematic diagram of an uplink power control method according to an embodiment of the present invention
  • FIG. 1 is a schematic diagram of an uplink power control method according to an embodiment of the present invention
  • FIG. 13 is a schematic diagram of another UE according to an embodiment of the present invention:
  • FIG. 14 is a schematic diagram of a first communication node according to an embodiment of the present invention
  • FIG. 15 is a schematic diagram of a UE according to an embodiment of the present invention
  • FIG. 16 is a schematic diagram of a UE according to an embodiment of the present disclosure.
  • FIG. 17 is a schematic diagram of another UE according to an embodiment of the present invention:
  • FIG. 18 is a schematic diagram of a first communication node according to an embodiment of the present invention
  • FIG. 19 is a schematic diagram of a second communication node according to an embodiment of the present invention
  • FIG. 18 is a schematic diagram of a first communication node according to an embodiment of the present invention
  • FIG. 19 is a schematic diagram of a second communication node according to an embodiment of the present invention
  • FIG. 18 is a schematic diagram of a first communication node according to an embodiment of the present invention
  • FIG. 19 is a schematic diagram of a second communication node according to an embodiment of the present invention
  • FIG. 21 is a schematic diagram of a first communication node according to an embodiment of the present invention
  • FIG. 22 is a schematic diagram of a UE according to an embodiment of the present invention
  • FIG. 23 is a schematic diagram of a UE according to an embodiment of the present disclosure.
  • FIG. 24 is a schematic diagram of a first communication node according to an embodiment of the present invention
  • FIG. 25 is a schematic diagram of a second communication node according to an embodiment of the present invention.
  • the backoff of the PUSCH transmission power on different carriers is a method of using the equal power backoff factor, that is, the PUSCH transmission power on all carriers is used.
  • the equal power backoff factor is rolled back. Obviously, this power backoff method is not flexible enough.
  • the transmission characteristics of different carriers are different, and the same PUSCH transmission power of each carrier may cause system performance loss.
  • the PUSCH transmission power initially determined by the UE is relatively low, but the data rate transmission can be provided on the small cell. .
  • the PUSCH transmission power of the small cell is regressed to the same extent as the PUSCH transmission power of the primary serving cell, and the PUSCH transmission power of the UE in the small cell is lower.
  • This causes more data transmission errors, which has a greater impact on the user's uplink throughput, especially the uplink throughput rate of the small cell, and reduces the user experience. Therefore, the foregoing solution in the prior art may cause the PUSCH transmission power after the rollback to be inappropriate, thereby affecting the performance of the system.
  • the solution of the embodiment of the present invention is not limited to a small cell scenario using the CA technology, and may also be a scenario of other CA technologies.
  • First PUSCH transmission power indicating PUSCH transmission power of the UE on the corresponding carrier of the first communication node
  • the second PUSCH transmission power indicates the PUSCH transmission power of the UE on the corresponding carrier of the second communication node
  • a first power backoff factor a power backoff factor indicating that the UE rewinds the first PUSCH transmission power
  • the second power back-off factor indicates a power back-off factor that the UE performs back-off of the second PUSCH transmission power.
  • the first communication node may be a macro base station
  • the second communication node may be a micro base station, a relay station, or a radio remote station ( Remote Radio Head , RRH ), etc.
  • the first communication node and the second communication node are not specifically limited in the embodiment of the present invention.
  • An embodiment of the present invention provides an uplink power control method, where the first communication node has added a cell corresponding to the second communication node as a secondary serving cell of the UE, where the first communication node is a UE. a communication node corresponding to the primary serving cell, where the second communication node is a communication node corresponding to the secondary serving cell of the UE, as shown in FIG. 1 , which includes:
  • the UE obtains a power backoff parameter, where the power backoff parameter includes a first interference value and a second interference value, where the first interference value is a physical resource block that is sent by the UE to the first communication node.
  • the interference received, the second interference value is interference received by the physical resource block sent by the UE to the second communication node; or the power backoff parameter includes a power backoff ratio factor, and the power back-off ratio The factor is the ratio of the first power backoff factor to the second power backoff factor.
  • the power back-off parameter in the embodiment of the present invention may include the first interference value and the second interference value.
  • the power back-off parameter may also include a power back-off scale factor, which is in the embodiment of the present invention. This is not specifically limited.
  • the power backoff parameter may be carried by the power control signaling sent by the first communication node and/or the second communication node to the UE, for example: if the power backoff parameter is the first interference And the second interference value, the first interference value may be carried in the first power control signaling sent by the first communications node to the UE, where the second interference value may be in the first And carrying, by the second communication node, the second power control signaling sent by the communications node; if the power backoff parameter is the power backoff scaling factor, the power backoff scaling factor may be at the first communications node
  • the first power control signaling sent to the UE is carried, or the power backoff ratio factor may be carried in the second power control signaling sent by the second communications node to the UE, which is implemented by the present invention.
  • the first power control signaling or the second power control signaling belongs to the control signaling in the existing standard, and may be, for example, radio resource control (RRC) signaling, which is in the embodiment of the present invention. This is not specifically limited.
  • RRC radio resource control
  • the power backoff parameter can also be controlled by the media access control unit.
  • Media Access Control Control Element, MAC CE Media Access Control Element
  • the specific manner in which the power backoff parameter is sent to the UE is not limited in the embodiment of the present invention, and only the UE obtains the power backoff parameter.
  • the number of the second communication nodes may be one or multiple, that is, the first communication node may add one cell as a secondary serving cell of the UE, or may add multiple cells.
  • the number of the second communication node is not specifically limited in the embodiment of the present invention, and the communication node corresponding to the cell of the secondary serving cell added by the primary serving cell as the UE is regarded as The second communication node is suitable for use in embodiments of the present invention.
  • the secondary serving cell may specifically include a small cell, which is not specifically limited in this embodiment of the present invention.
  • the small cell communication node is a base station, and multiple small cells may be clustered and deployed in the network to provide coverage of the hot spot area. Its transmit power and coverage are smaller than that of the macro base station and the micro base station.
  • the dynamic range of the transmit power can be generally 24dBm ⁇ 37dBm.
  • the typical value can be 24dBm, 30dBm, or 37dBm, and the coverage radius of the small cell is generally Can be less than 20m.
  • the small cell in the following text can refer to the description here, and will not be described later.
  • the UE acquires the first PUSCH transmit power and the second PUSCH transmit power.
  • the step of obtaining, by the UE, the first PUSCH transmit power and the second PUSCH transmit power may be specifically according to formula (3).
  • the first PUSCH transmission power is obtained according to the first parameter carried in the first power control signaling that is sent by the first communications node to the UE, where the first The parameter may include: an uplink expected power P f of the first communication node, and a large-scale fading weight factor “ ' on the primary carrier corresponding to the first communication node (the physical allocated by the first communication node to the UE) a number of resource blocks (PRBs) M ⁇ u , a downlink path loss of the first communication node on the corresponding primary carrier, and the UE is in the first communication section a point corresponding to an uplink power adjustment factor on the primary carrier, a maximum transmit power Pc ⁇ n of the UE on the primary carrier corresponding to the first communication node, and a modulation coding mode MCS on the primary carrier corresponding to the first communication node
  • the power compensation value ⁇ ⁇ 11 The power compensation value ⁇ ⁇ 11 .
  • the method includes: an uplink expected power p 0 en of the second communication node, a large-scale fading weighting factor a s on the second communication node corresponding to the secondary carrier, and a PRB allocated by the second communication node to the UE the number of M s ⁇ u, corresponding to said second communication node on a downlink path loss estimated secondary carrier ⁇ ⁇ ⁇ 11, corresponding to the UE on the secondary carrier uplink power adjustment factor in the second communication node / ⁇ " the maximum UE transmission power on the second communication node corresponding to the secondary carrier 11 ⁇ Li, and a power compensation value corresponding to the modulation and coding scheme on the secondary carrier of said second communication node MCS
  • c is the corresponding carrier, for example: if it is the carrier corresponding to the primary serving cell, where c is the primary carrier, and if it is the carrier corresponding to the secondary serving cell, then c is the secondary carrier corresponding to the secondary serving cell;
  • PpuscH ') Indicates the PUSCH transmission power of the UE in the ''subframe, the cth carrier;
  • p c MA x ') indicates the maximum transmission power value of the UE in the subframe, the cth carrier;
  • MpuscH ') indicates the ''subframe) , the communication node corresponding to the c-carrier is assigned to
  • the number of PRBs of the UE; p . -USCH, ') indicates the uplink target power value, that is, the uplink expected power value of the communication node corresponding to the c-th carrier; the downlink path loss estimate of the communication node corresponding to the C-th carrier on the c-th carrier; ⁇ ') indicates the c-th a large-scale fading weighting factor on the carrier; W represents an uplink power adjustment factor of the UE in the ''subframe', the c-th carrier; and a modulation coding mode on the c-th carrier in the subframe (Modulation and Coding Scheme)
  • the power compensation value of MCS) is a parameter whose value ranges from 0, 1, and 2. The value is determined according to the transmission mode of the UE configured by the upper layer. Different values correspond to different ⁇ -USCHO') and a c (>.
  • the UE may acquire the first PUSCH transmission power and the second PUSCH transmission power, which are not specifically limited in this embodiment of the present invention. It should be noted that the step 101 and the step 102 do not have a certain order, which is not specifically limited in the embodiment of the present invention.
  • the first PUSCH transmit power and the second PUSCH transmit power exceeds a maximum transmit power of the UE, according to the first interference value and the second interference value, to the first PUSCH
  • the transmit power and the second PUSCH transmit power are backed off, or the first PUSCH transmit power and the second PUSCH transmit power are backed off according to the power backoff scale factor.
  • the sum of the first PUSCH transmission power and the second PUSCH transmission power exceeds a predetermined maximum transmission power of the UE, it is required to perform a backoff of the PUSCH transmission power, and at this time, according to the power Rollback parameters, first obtaining the first power backoff factor and the second power backoff factor, and then performing backoff on the first PUSCH transmission power according to the first power backoff factor, and The second power backoff factor is performed, and the second PUSCH transmission power is backed off.
  • different methods for obtaining the first power backoff factor and the second power backoff factor may be corresponding.
  • ⁇ (0 indicates the first power backoff factor of the subframe
  • (0 indicates the first interference value of the ''subframe; indicates that in the ''subframe, the UE arrives a large-scale fading of the first communication node
  • (0 indicates that the maximum transmit power of the UE in the ''subframe
  • ⁇ ' indicates the first PUSCH transmit power of the first subframe, where One carrier is the primary carrier
  • ⁇ When ⁇ 1, ⁇ « indicates the second power backoff factor corresponding to the k-1th second communication node of the subframe, and ') indicates the second communication of the second subframe of the ''subframe'
  • the second interference value corresponding to the node indicating a large-scale fading of the UE to the k-1th second communication node in the first subframe; (0 indicates the maximum transmission power of the UE in the subframe);
  • ⁇ W represents the second PUSCH transmission power corresponding to the second communication node of the ''subframe', wherein the first carrier is a secondary carrier, and the number of k is the number of the second communication node Number.
  • the first subframe is taken as an example: if the power backoff parameter includes a power backoff scale factor, the power back scale factor may be combined according to the formula (5). Obtaining the first power backoff factor and the second power backoff factor w ⁇ S ⁇ i) formula (5).
  • W1 (0 represents the first power backoff factor of the ''subframe
  • ⁇ (0 represents the second power backoff factor of the ''subframe)
  • p(0) denotes the subframe power backoff scaling factor
  • [zeta] represents the first "sub-frame
  • g (0 indicates the first 'sub-frame
  • the UE to the The large-scale fading of the second communication node, m ⁇ K is the number of the second communication nodes.
  • the first power back-off factor and the second power back-off factor may be separately calculated according to the power back-off scale factor and the formula (5) and the formula (6), where the formula (5) as follows: w ⁇ S ⁇ i) Formula (5) W l (0
  • the first power back-off factor and the second power back-off factor may also be acquired in combination with the formula (5) and other manners.
  • the sum of all PUCCH transmission powers of the UE and all PUSCH transmission powers is equal to one predetermined power; or that all PUSCH transmission power powers of the UE are equal to one predefined power or the like.
  • the dish ') is different from MAX '
  • ⁇ indicates the maximum transmit power value of the UE in the i-th subframe, the c-th carrier; and indicates the maximum transmit power of the UE in the ''subframe', where the UE It may correspond to multiple carriers, PcMAX 0 ', 'person and satisfy formula (6).
  • the UE does not need to send power to the first PUSCH and the second PUSCH.
  • the transmit power is rolled back, and the uplink power control process is temporarily terminated.
  • the following is an example to illustrate the specific implementation process of the embodiment of the present invention. It is assumed that there is currently one first communication node and two second communication nodes.
  • the power backoff parameter obtained by the UE is specifically a power backoff ratio factor, and the formula can be combined. (5) and formula (6), get the following equation:
  • the first PUSCH transmission power can be backed off according to ⁇ ( ) , according to (0 (0 respectively for the PUSCH transmission power on the corresponding carrier of the two second communication nodes) go back.
  • an uplink power control method obtains a power backoff parameter by using a UE, so that a sum of the first PUSCH transmission power and the second PUSCH transmission power is determined at the UE.
  • the first PUSCH transmit power and the second PUSCH transmit power may be respectively retired according to the power backoff parameter, compared to the prior art, etc.
  • the method may separately roll back the first PUSCH transmit power and the second PUSCH transmit power, so that the The power backoff mode of the UE is more flexible, and the power backoff parameter includes the first interference value and the second interference value, or the power backoff parameter includes the power backoff ratio factor, and the power
  • the fallback parameter is characterized by the actual situation of each carrier in the current network, and the first PUSCH transmission power and the Two PUSCH transmission power backoff can effectively allow the power of the UE can be assigned to a more reasonable on different carriers, the UE reducing performance loss caused by the power backoff.
  • the power control is performed according to the power backoff parameter, the power of the small cell can be reduced to a small extent, so that the user's transmission rate can be improved and the user experience can be improved.
  • An embodiment of the present invention further provides an uplink power control method, which is specifically shown in FIG. 2, and includes: The first communication node obtains a power backoff parameter, where the power backoff parameter includes a first interference value, or the power backoff parameter includes a power backoff ratio factor, where the interference value is sent by the UE.
  • the first communication node may be a communication node corresponding to the primary serving cell of the UE, and the second communication node may be a communication node corresponding to the secondary serving cell of the UE;
  • a communication node may be a communication node corresponding to the secondary serving cell of the UE, and the second communication node may be a communication node corresponding to the primary serving cell of the UE, which is not specifically limited in this embodiment of the present invention.
  • the first communications node may obtain the power backoff parameter by:
  • the first communication node may acquire the interference received by the physical resource block sent by the UE to the first communication node by using a method in the prior art, for example: the first communication node measures the uplink physical resource block of the UE by using the method.
  • the useful signal is obtained, and the interference value is obtained according to a Received Signal Strength Indication (RSI).
  • RSI Received Signal Strength Indication
  • the interference value can also be obtained by other means.
  • the manner in which the UE obtains the power backoff scale factor may be as follows: the first communication node separately estimates, according to the radio resource management (RRM) measurement report of the UE, the UE and the first communication node, and the The link quality of the second communication node may further obtain a power backoff ratio factor according to a relationship in which the power backoff scale factor is inversely proportional to the link quality.
  • the power backoff scale factor can also be an empirical value, which occurs as an enumerated variable.
  • the power backoff parameter can be obtained in other manners, and the details are not described herein again.
  • the PUSCH transmission power and the second PUSCH transmission power are backed off.
  • the first communications node may send power control signaling to the
  • the UE carries the power backoff parameter, so that the power backoff parameter is sent to the UE.
  • the power control signaling belongs to the control signaling in the existing standard, and may be, for example, RRC signaling, which is not specifically limited in this embodiment of the present invention.
  • the power backoff parameter may be sent to the UE through the MAC CE.
  • the manner in which the first communication node sends the power backoff parameter to the UE is not specifically limited.
  • an embodiment of the present invention provides an uplink power control method, where a first communication node obtains a power backoff parameter, and sends the power backoff parameter to the UE, where The UE performs backoff on the first PUSCH transmission power and the second PUSCH transmission power according to the power backoff parameter.
  • the method may separately send power and the first PUSCH to the first PUSCH.
  • the second PUSCH transmit power is rolled back, so that the power backoff mode of the UE is more flexible, and the power backoff parameter includes an interference value, or the power backoff parameter includes the power backoff.
  • the scale factor, the power backoff parameter is used to describe the actual situation of each carrier in the current network, and the power backoff parameter is sent to the UE, so that the UE performs the PUSCH transmit power backoff according to the power backoff parameter.
  • the PUSCH transmission power of the UE is allocated to different carriers more reasonably, thereby reducing performance loss caused by the UE performing power backoff.
  • the first communication node sends the power backoff parameter to the UE, and when the UE performs power control according to the power backoff parameter, the power of the small cell may be reduced. Therefore, the user's transmission rate can be improved and the user experience can be improved.
  • Embodiment 2
  • An embodiment of the present invention provides an uplink power control method, in which a first communication node has added a cell corresponding to a second communication node as a secondary serving cell of the UE, where the first communication node is a UE.
  • the communication node corresponding to the primary serving cell, the second communication node is a communication node corresponding to the secondary serving cell of the UE, as shown in FIG. 3, specifically:
  • the UE acquires a first PUSCH transmission power and a second PUSCH transmission power.
  • the method for the UE to obtain the first PUSCH transmission power and the second PUSCH transmission power may refer to the description of step 102, which is not described herein again.
  • the UE performs the first PUSCH transmit power and the third PUSCH transmit power according to formula (7). go back;
  • the first PUSCH transmit power of the subframe> ⁇ indicates the third of the ''subframes'
  • a PUSCH transmission power where the third PUSCH transmission power is a PUSCH transmission power on the second cell corresponding carrier included in the second PUSCH transmission power, and indicates that the UE is in a 'subframe, a power back-off factor for back-off of a PUSCH transmission power and a third PUSCH transmission power;
  • AM « (0 indicates the maximum transmission power of the UE in the subframe;
  • ⁇ ⁇ indicates that the UE transmits in the PUCCH of the subframe Power;
  • usav (0 indicates the fourth PUSCH transmission power of the first subframe, and the fourth PUSCH transmission power is the PUSCH transmission power on the corresponding carrier of the first cell included in the second PUSCH transmission power;
  • ⁇ PpUSaV ( ') indicates the sum of the PUSCH transmission powers on the corresponding carriers of all the first cells of the UE in the ''subframe', that is, the sum of the PUSCH transmission powers on the corresponding carriers of all the small cells of the UE in
  • the PUSCH transmission power on the corresponding carrier of the small cell is also relatively low, and if the small cell is used to roll back the equal-return factor, the small cell is The power backoff is the same as the power backoff of the primary serving cell or other secondary serving cells, which causes the UE to transmit less power in the small cell, but because it can provide higher data rate transmission on the small cell,
  • the uplink throughput of the user, especially the uplink throughput of the small cell may be greatly affected, so that the transmission rate of the small cell is reduced.
  • the behavior of the UE side is updated by using the formula (7), and the formula (7) is more targeted than the method of performing power backoff only for the PUSCH transmission power on the 'carrier' in the formula (2).
  • the PUSCH transmission power on the corresponding carrier of the cell other than the small cell of the UE may be backed off, and the PUSCH transmission power on the corresponding carrier of the small cell of the UE may not be rolled back.
  • the power transmission is not required to be performed on the PUSCH transmission power of the corresponding cell of the small cell, so that the transmission rate of the small cell can be ensured, that is, in a small cell scenario, the characteristics of the small cell are fully utilized, and the user experience is improved.
  • this embodiment provides an uplink power control method to avoid the above problem, specifically as shown in FIG. 4 . As shown, including:
  • the UE acquires the number of PRBs allocated by the second communications node to the UE, where the number of the PRBs is determined by the first communications node according to the current power headroom (PHR) of the UE. .
  • PHR current power headroom
  • the first communication node is a communication node corresponding to the primary serving cell of the UE
  • the second communication node is a communication node corresponding to the secondary serving cell of the UE
  • the UE may obtain the second communication node.
  • the UE may send the current PHR of the UE to the first communication node, so that the first communication node is configured according to the The number of the PRBs determined by the PHR can satisfy the first condition, where the first condition is that the sum of the first PUSCH transmission power and the second PUSCH transmission power acquired according to the number of the PRBs does not exceed the predetermined one.
  • the maximum transmit power of the UE is that the sum of the first PUSCH transmission power and the second PUSCH transmission power acquired according to the number of the PRBs does not exceed the predetermined one.
  • the UE may send the current PHR of the UE to the first communication node by using the RRM.
  • the RRM may also be sent by other means, and the embodiment of the present invention is not limited.
  • the number of the PRBs is determined by the first communications node according to the PHR sent by the UE, where the specific method for determining the number of the PRBs by the first communications node may be as follows:
  • -Pusc. indicates the uplink target power value, that is, the uplink expected power value of the communication node corresponding to the carrier;
  • the downlink path loss estimate; ⁇ ') indicates the large-scale fading weight factor on the carrier, which is a parameter determined according to the transmission mode of the UE configured by the upper layer, 0 or 1 or 2, different values, corresponding to different P. — PuscH,. (7 ⁇ ) and a c (f).
  • the PHR in equation (8) is a known parameter carried in the RRM measurement report, P. -PU SC3 ⁇ 4 '), ⁇ ') is a parameter determined according to the transmission mode of the UE configured in the upper layer, and is a pre-configured parameter, so that the value of the PRB can be obtained according to the formula (8).
  • equation (9) is similar to equation (3), so after the first communication node transmits the PRB to the second communication node, the communication node may transmit a second number of the PRB 1 ⁇ ⁇ 1 to the UE, the UE according to the embodiment
  • the second PUSCH transmission power is obtained by using the formula (3) in the step 102, the second PUSCH transmission power is approximately equal to the PHR in the RRM measurement report, and the PHR is the UE.
  • the current power allocation status is determined in combination with the current power allocation status, so that the sum of the first PUSCH transmission power and the maximum transmission power of the UE can be guaranteed.
  • the UE acquires a second PUSCH transmission power according to the number of the PRBs.
  • the method for obtaining the second PUSCH transmission power by the UE according to the number of the PRBs may refer to formula (3) in step 102 of the first embodiment.
  • the present invention is sent by the second PUSCH.
  • the sum of the power and the first PUSCH transmit power acquired by the UE does not exceed the maximum transmit power of the UE, and therefore does not need to roll back the first PUSCH transmit power and the second PUSCH transmit power, and the uplink power control process End it now.
  • the number of the PRBs used when acquiring the second PUSCH transmission power is determined according to the current PHR of the UE, and the PHR is the maximum power that the UE can allocate currently, therefore, because the first communication
  • the node knows the first PUSCH transmission power, and the number of PRBs allocated by the second communication node to the UE is determined by the first communication node according to the PHR, so that the UE obtains the second PUSCH transmission power according to the number of the PRBs.
  • the sum of the first transmission power must not exceed the maximum transmission power of the UE.
  • an uplink power control method is provided in the embodiment of the present invention, where the UE acquires a PRB allocated by the second communication node to the UE.
  • the number of the PRBs is determined by the first communication node according to the PHR of the UE.
  • the second PUSCH transmission power acquired by the UE according to the PRB can be guaranteed.
  • the sum of the first PUSCH transmission power does not exceed the maximum transmission power of the UE, thus avoiding frequent occurrences of the UE transmitting power exceeding its rated maximum transmission power, thereby reducing the power consumption of the UE.
  • the first communication node receives, by the UE, the current PHR of the UE.
  • the UE may correspond to one primary serving cell, and corresponds to multiple secondary serving cells.
  • the UE sends an RRM measurement report to the first communications node, where the RRM measurement report may carry the reference signal strength of the neighboring cell (Reference Signal Receiving Power, RSRP) And Reference Signal Receiving Quality (RSRQ), and the current PHR of the UE.
  • the PHR is determined by the UE according to its current power allocation status.
  • the first communication node may determine, after the RSC and the RSRQ, that the cell corresponding to the second communication node is added as the secondary serving cell of the UE.
  • the accessing technology of the secondary serving cell is a mature technology in the prior art. Therefore, the process of accessing the secondary serving cell in this embodiment of the present invention is not specifically described.
  • the first communications node determines, according to the PHR, the number of PRBs allocated by the second communications node to the UE.
  • the first condition is that the sum of the first PUSCH transmission power and the second PUSCH transmission power acquired according to the number of the PRBs does not exceed the predetermined UE. Maximum transmit power.
  • the method for determining the number of the PRBs by the first communication node may refer to the description of the step 401, and details are not described herein again.
  • the first communications node sends the number of the PRBs to the second communications node, so that the second communications node sends the number of the PRBs to the UE, where the number of the PRBs is used.
  • the first communication node After the first communication node determines the number of PRBs allocated by the second communication node to the UE, the first communication node sends the number of the PRBs to the second communication node. And the sending, by the first communications node, the number of the PRBs to the second communications node may include:
  • the first communication node sends a request message to the second communication node, where the request message is used to request to add a cell corresponding to the second communication node as a secondary serving cell of the UE, where the request message carries The number of PRBs. That is, the number of the PRBs sent to the second communication node is carried in a request message in the secondary serving cell access procedure.
  • the second communication node may carry the number of the PRBs in the power control signaling sent to the UE, so that the UE is configured according to the number of the PRBs. , acquiring a second PUSCH transmission power.
  • the sum of the second PUSCH transmission power and the first PUSCH transmission power acquired by the UE does not exceed the maximum transmission power of the UE, so the UE does not need to send the first PUSCH.
  • the power and the second PUSCH transmission power are backed off, and the uplink power control process is temporarily terminated.
  • an embodiment of the present invention provides an uplink power control method, where the first communications node receives a current PHR of the UE sent by the UE, and then the first communications node is configured according to the PHR. Determining, by the second communication node, the number of PRBs allocated to the UE, and sending the number of the PRBs to the second communication node, so that the second communication node sends the number of the PRBs To the UE.
  • the second PUSCH transmission power acquired by the UE according to the PRB can ensure that the sum of the first PUSCH transmission power does not exceed the maximum transmission power of the UE, so that frequent UE occurrences can be avoided. When the transmit power exceeds its rated maximum transmit power, the power consumption of the UE can be reduced.
  • the embodiment of the invention further provides an uplink power control method, which is specifically shown in FIG. 6, and includes:
  • the second communications node acquires the number of PRBs allocated by the second communications node to the UE.
  • the number of the PRBs is determined by the first communications node according to the current PHR of the UE, so that the number of the PRBs can satisfy the first condition, where the first The condition is that the sum of the first PUSCH transmission power and the second PUSCH transmission power acquired according to the number of the PRBs does not exceed a predetermined maximum transmission power of the UE.
  • the method for determining the number of the PRBs by the first communication node according to the current PHR of the UE may refer to the description of the step 401, which is not described herein again.
  • the second communication node sends the number of the PRBs to the UE, where the number of the PRBs is used to acquire the second PUSCH transmission power.
  • the second communication node may carry the number of the PRBs in the power control signaling sent to the UE, so as to send the number of the PRBs to the UE.
  • the power control signaling belongs to the control signaling in the existing standard, and may be, for example, RRC signaling, which is not specifically limited in this embodiment of the present invention.
  • the number of the PRBs may be sent to the UE by using the MAC CE.
  • the manner in which the number of the PRBs is sent to the UE by the second communications node is not specifically limited.
  • the secondary serving cell may specifically include a small cell.
  • the small cell reference may be made to the related description in the first embodiment or the second embodiment, and details are not described herein again.
  • an embodiment of the present invention provides an uplink power control method, where the second communication node acquires the number of PRBs allocated by the second communication node to the UE.
  • the number of the PRBs is determined by the first communications node according to the current PHR of the UE, and then the second communications node sends the number of the PRBs to the UE,
  • the second PUSCH transmission power acquired by the UE according to the PRB so as to ensure that the sum of the first PUSCH transmission power does not exceed the maximum transmission power of the UE, so that frequent occurrence of the UE's transmission power exceeding its rated maximum transmission can be avoided.
  • the power consumption of the UE can be reduced.
  • An embodiment of the present invention provides an uplink power control method, where the first communication node is a communication node corresponding to a primary serving cell of the UE, and the second communication node is a communication node corresponding to a secondary serving cell of the UE, specifically
  • the first communication node is a communication node corresponding to a primary serving cell of the UE
  • the second communication node is a communication node corresponding to a secondary serving cell of the UE
  • the method includes:
  • the first communications node sends the first power control signaling to the UE, where the first power control signaling carries a first interference value and a first parameter, where the first interference value is sent by the UE The interference received by the PRB of the first communication node.
  • the first parameter may refer to the description in step 102 of Embodiment 1.
  • the UE receives the first power control signaling.
  • the method for obtaining the first PUSCH transmission power by the UE according to the formula (3) and the first parameter may refer to the first embodiment.
  • the second communications node sends the second power control signaling to the UE, where the second power control signaling carries a second interference value and a second parameter, where the second interference value is sent by the UE The interference received by the PRB of the second communication node.
  • the second parameter may refer to the first embodiment.
  • the UE receives the second power control signaling.
  • the UE acquires a second PUSCH transmit power according to formula (3) and the second parameter.
  • the UE performs the first according to the first interference value and the second interference value.
  • the PUSCH transmission power and the second PUSCH transmission power are backed off.
  • the first PUSCH transmit power and the second PUSCH transmit power are respectively backed off according to the first power backoff factor and the second power backoff factor, the first PUSCH transmit power and the The second PUSCH transmission powers are respectively:
  • the first PUSCH transmit power and the second PUSCH transmit power need not be needed.
  • the transmit power is rolled back and the algorithm ends.
  • the embodiment of the present invention further provides an uplink power control method, as shown in FIG. 8.
  • the method includes:
  • the first communications node sends the first power control signaling to the UE, where the first power control signaling carries a power back-off scale factor and a first parameter, where the power back-off scale factor is the first power.
  • the ratio of the backoff factor to the second power backoff factor is the first power.
  • the first parameter may refer to the first embodiment.
  • the UE receives the first power control signaling.
  • the UE acquires a PUSCH sending power of the first communications node according to formula (3) and the first parameter.
  • the second communications node sends the second power control signaling to the UE, where the second power control signaling carries the second parameter.
  • the UE receives the second power control signaling.
  • the UE acquires a PUSCH sending power of the second communications node according to formula (3) and the second parameter.
  • the method for the UE to back up the first PUSCH transmission power and the second PUSCH transmission power according to the power back-off scale factor may refer to the related description of step 103 in the first embodiment, where the embodiment of the present invention is used. I will not repeat them here.
  • the first PUSCH transmit power and the second PUSCH transmit power need not be needed.
  • the transmit power is rolled back and the algorithm ends.
  • the embodiment of the present invention further provides an uplink power control method, where the first communication node is a communication node corresponding to a primary serving cell of the UE, and the second communication node is a secondary serving cell corresponding to the UE.
  • the first communication node is a communication node corresponding to a primary serving cell of the UE
  • the second communication node is a secondary serving cell corresponding to the UE.
  • the method includes:
  • the first communications node sends the first power control signaling to the UE, where the first power control signaling carries the first parameter.
  • the UE receives the first power control signaling.
  • the UE acquires the first PUSCH transmission power according to formula (3) and the first parameter.
  • the second communications node sends second power control signaling to the UE, where
  • the second power control signaling carries a power back-off scale factor and a second parameter, where the power back-off scale factor is a ratio of the first power back-off factor to the second power back-off factor.
  • the second parameter may refer to the first embodiment.
  • the UE receives the second power control signaling.
  • the UE acquires a PUSCH transmit power of the second communications node according to formula (3) and the second parameter.
  • steps 901 to 903 may be performed simultaneously with the steps 904 to 906, or may be performed sequentially.
  • the UE sends the power to the first PUSCH according to the power backoff scale factor.
  • the second PUSCH transmission power is rolled back.
  • the PUSCH transmit power of the UE on the corresponding carrier of each communication node needs to satisfy the formula (10), which is in the embodiment of the present invention. This will not be repeated here.
  • the first PUSCH transmit power and the second PUSCH transmit power need not be needed.
  • the transmit power is rolled back and the algorithm ends.
  • the number of the second communication nodes may be one or multiple, and each second communication node operates according to the embodiment.
  • the embodiment of the present invention does not specifically limit the number of the second communication node, and the communication node corresponding to the cell that is added by the primary serving cell to the secondary serving cell of the UE is regarded as the second communication node, and is applicable to the present invention.
  • the secondary serving cell may specifically include a small cell, which is not specifically limited in this embodiment of the present disclosure.
  • Embodiment 5 is a detailed description of the foregoing embodiments, and the technical effects that can be achieved can also be referred to the above description, and details are not described herein again.
  • Embodiment 5 is a detailed description of the foregoing embodiments, and the technical effects that can be achieved can also be referred to the above description, and details are not described herein again.
  • An embodiment of the present invention provides an uplink power control method, where the first communication node is a communication node corresponding to a primary serving cell of the UE, and the second communication section is The point is the communication node corresponding to the secondary serving cell of the UE.
  • the method includes:
  • the UE sends the current PHR of the UE to the first communications node by using the RRM, where the PHR is used to determine the number of PRBs allocated by the second communications node to the UE.
  • the first communications node determines, according to the PHR, the number of PRBs allocated by the second communications node to the UE.
  • the first communications node sends a request message to the second communications node, where the request message is used to request to add a cell corresponding to the second communications node as a secondary serving cell of the UE, where the request message is Carrying the number of the PRBs.
  • the second communications node receives the request message, and obtains the number of the PRBs.
  • the second communication node sends an acknowledgement message of successful addition to the first communication node.
  • the second communication node may send an acknowledgement message of successful addition to the first communication. a node, such that the first communication node determines that the secondary serving cell of the UE is successfully added.
  • step 1006 is an optional step, and the second communication node may not send the confirmation message of the successful connection to the first communication node, which is not specifically limited in the embodiment of the present invention.
  • the method further includes:
  • the first communication node sends the first power control signaling to the UE, where the first power control signaling carries the first parameter.
  • the UE receives the first power control signaling.
  • the UE acquires a first PUSCH transmission power according to formula (3) and the first parameter.
  • the second communications node sends second power control signaling to the UE, where The second power control signaling carries a second parameter.
  • the number of PRBs allocated by the second communication node to the UE is determined by the first communication node according to the current PHR of the UE, and is different from the existing one.
  • the number of PRBs allocated to the UE by the second communication node in the technology is determined by the first communication node according to the current PHR of the UE, and is different from the existing one.
  • the UE receives the second power control signaling.
  • the second power control signaling carries the second parameter, so after receiving the second power control signaling, the UE may acquire the second parameter.
  • the UE acquires a second PUSCH transmission power according to formula (3) and the second parameter.
  • the method for the UE to obtain the second PUSCH transmission power according to the formula (3) and the second parameter may be referred to the step 102 in the first embodiment, and details are not described herein again.
  • the power back according to the prior art solution or the first embodiment and the second embodiment may be used.
  • the retreating scheme performs the rollback of the first PUSCH transmission power and the second PUSCH transmission power, which is not limited in the embodiment of the present invention, and details are not described herein again.
  • Embodiment 6 is a detailed description of the foregoing embodiments, and the technical effects that can be achieved can also be referred to the above description, and details are not described herein again.
  • Embodiment 6 is a detailed description of the foregoing embodiments, and the technical effects that can be achieved can also be referred to the above description, and details are not described herein again.
  • the embodiment of the present invention provides an uplink power control device 1200.
  • the device 1200 in this embodiment can be used to perform the corresponding operations in the foregoing method embodiments.
  • the apparatus 1200 includes an obtaining unit 1201 and a power backing unit 1202.
  • the obtaining unit 1201 is configured to acquire a power backoff parameter.
  • the acquiring unit 1201 is further configured to acquire a first physical uplink shared channel PUSCH transmit power and a second PUSCH transmit power, where the first PUSCH transmit work
  • the second PUSCH transmission power is the PUSCH transmission power of the UE on the corresponding carrier of the second communication node
  • the first communication node is the UE a communication node corresponding to the primary serving cell
  • the second communication node is a communication node corresponding to the secondary serving cell of the UE
  • the power backoff parameter includes a power back-off scale factor, where the power back-off scale factor a ratio of a first power back-off factor to a second power back-off factor, where the first power back-off factor is a power back-off factor that the UE performs back-off of the first PUSCH transmit power
  • the second The power back-off factor is a power back-off factor for the UE to roll back the second PUSCH transmission power
  • the power back-off unit 1202 is configured to: if the sum of the first PUSCH transmission power and the second PUSCH transmission power acquired by the acquiring unit 1201 exceeds a maximum transmission power of the UE, according to the acquiring unit 1201 The obtained first interference value and the second interference value are backed off by the first PUSCH transmission power and the second PUSCH transmission power, or the power backed by the acquiring unit 1201 The scaling factor backs up the first PUSCH transmit power and the second PUSCH transmit power.
  • the power backoff unit 1202 includes an obtaining module 12021 and a power backoff module 12022.
  • the obtaining module 12021 is configured to obtain the first power backoff factor and the second power backoff factor according to the power backoff scale factor.
  • the power back-off module 12022 is configured to roll back the first PUSCH transmission power according to the first power back-off factor obtained by the acquiring module 12021, and according to the acquired by the acquiring module 12021 The second power backoff factor rolls back the second PUSCH transmission power.
  • the acquiring module 12021 is specifically configured to separately obtain the first power backoff factor and the second power according to the power backoff scale factor in the following manner Fallback factor:
  • W i represents the first power backoff factor
  • ⁇ represents the second power backoff factor
  • gi represents a large-scale fading of the UE to the first communication node. Representing a large-scale fading of the UE to the second communication node, and being an integer greater than one.
  • the acquiring module 1202 is specifically configured to obtain the first power backoff factor and the second power backoff factor respectively according to the power backoff scale factor as follows:
  • W l ⁇ PUSCH, l + ⁇ W k PUSCH , k + ⁇ PUCCH ⁇ MAX
  • AMA X represents the maximum transmit power of the UE
  • PUCCH represents the physical uplink control channel PUCCH transmission power of the UE; , is the sum of the number of the first communication node and the second communication node, and K ⁇ 1.
  • the power backoff unit 1202 includes an obtaining module 1202 1 and a power backing module 12022.
  • the obtaining module 1202 1 is configured to obtain the first power backoff factor and the second power backoff factor according to the first interference value and the second interference value, respectively.
  • the power back-off module 12022 is configured to roll back the first PUS CH transmit power according to the first power back-off factor obtained by the acquiring module 1202 1 , and acquire according to the acquiring module 1202 1
  • the second power backoff factor is backed up by the second PU SCH transmit power.
  • the acquiring module 12021 is specifically configured to obtain the first power backoff factor and the second power backoff factor according to the first interference value and the second interference value, respectively:
  • the first power back-off factor and the second power back-off factor respectively:
  • the secondary serving cell includes a small cell.
  • the obtaining unit 1201 may be specifically configured to obtain a power backoff parameter as follows:
  • the method for performing the power back-off by the UE may refer to the description of the first embodiment or the fourth embodiment, and details are not described herein again.
  • Example VII Since the device 1200 of the present embodiment can be used to perform the above method, the technical effects that can be obtained can also be referred to the description in the above embodiments, and will not be described herein.
  • Example VII Since the device 1200 of the present embodiment can be used to perform the above method, the technical effects that can be obtained can also be referred to the description in the above embodiments, and will not be described herein.
  • Example VII Example VII.
  • the embodiment of the present invention provides an uplink power control device 1400.
  • the device 1400 in this embodiment can be used to perform corresponding operations in the foregoing method embodiments.
  • the apparatus 1400 includes an acquisition unit 1401 and a transmission unit 1402.
  • the obtaining unit 1401 is configured to obtain a power backoff parameter, where
  • the power backoff parameter includes a power backoff ratio factor, and the power backoff scale factor is a ratio of a first power backoff factor to a second power backoff factor, where the first power backoff factor is a user terminal UE pair a power back-off factor of the first physical uplink shared channel PUSCH transmission power to perform back-off, and the second power back-off factor is a power back-off factor of the UE to back-off the second PUSCH transmission power, where a PUSCH transmission power is a PUSCH transmission power of the UE on a corresponding carrier of the first communication node, and the second PUSCH transmission power is a PUSCH transmission power of the UE on a corresponding carrier of the second communication node, where the a communication node 1400 is a communication node corresponding to the primary serving cell of the UE, and the second communication node is a communication node corresponding to the secondary serving cell of the UE; or, the first communication node 1400 is the UE a communication node corresponding to the
  • the power backoff parameter includes a first interference value, where the first interference value is interference received by a physical resource block sent by the UE to the first communication node;
  • the sending unit 1402 is configured to send the first interference value or the power back-off ratio factor obtained by the acquiring unit 1401 to the UE, where the first interference value is used for the first PUSCH transmission power and the second PUSCH transmission power The sum exceeds the maximum transmit power of the UE, and the UE performs backoff on the first PUSCH transmit power and the second PUSCH transmit power according to the first interference value and the second interference value, where
  • the second interference value is an interference value received by the UE from the second communication node and sent by the UE to the physical resource block of the second communication node; or the power backoff ratio factor is used for The sum of the first PUSCH transmission power and the second PUSCH transmission power exceeds the maximum transmission power of the UE, and the UE transmits the power to the first PUSCH and the second PUSCH transmission power according to a power backoff ratio factor Roll back.
  • the sending unit 1402 is specifically configured to send, according to the manner, the interference value or the power back-off ratio factor acquired by the acquiring unit 1401 to the UE: sending power control signaling to the UE, where The power control signaling carries the interference value; or
  • the secondary serving cell includes a small cell.
  • the method for performing the power back-off by the first communication node may be referred to the description of the first embodiment or the fourth embodiment, and details are not described herein again.
  • Example VIII Since the device 1400 of the present embodiment can be used to perform the above method, the technical effects that can be obtained can also be referred to the description in the above embodiments, and will not be further described herein. Example VIII.
  • the embodiment of the present invention provides an uplink power control apparatus 1500.
  • the apparatus 1500 in this embodiment can be used to perform the corresponding operations in the foregoing method embodiments.
  • the apparatus 1500 includes an acquiring unit 1501.
  • the unit 1502 is returned.
  • the acquiring unit 1501 is configured to acquire a first physical uplink shared channel PUSCH transmit power and a second PUSCH transmit power, where the first PUSCH transmit power is a PUSCH transmit power of the UE on a corresponding carrier of the first communication node, where The second PUSCH transmission power is the PUSCH of the UE on the corresponding carrier of the second communication node Transmitting power, the first communication node is a communication node corresponding to the primary serving cell of the UE, and the second communication node is a communication node corresponding to the secondary serving cell of the UE.
  • the power back-off unit 1502 is configured to: if the sum of the first PUSCH transmission power and the second PUSCH transmission power acquired by the acquiring unit 1501 exceeds a maximum transmission power of the UE, according to the following formula The first PUSCH transmit power and the third PUSCH transmit power are rolled back:
  • l ⁇ / ⁇ is the number of the first cell, the first cell is a small cell included in the secondary serving cell of the UE; 0 ⁇ ⁇ M, where M is the number of the second cell, The second cell is a secondary serving cell other than the first cell included in the secondary serving cell of the UE; ⁇ , indicating the first PUSCH transmission power; ⁇ indicates the third PUSCH transmission power
  • the third PUSCH transmission power is the PUSCH transmission power on the corresponding carrier of the second cell; w represents the power backoff of the UE to roll back the first PUSCH transmission power and the third PUSCH transmission power.
  • a factor indicating a maximum transmit power of the UE a physical uplink control channel PUCCH transmit power of the UE; PpuscH ′ indicating a fourth PUSCH transmit power, where the fourth PUSCH transmit power is on a corresponding carrier of the first cell PUSCH transmission power.
  • the method for performing the power back-off by the UE may refer to the description of the second embodiment, and details are not described herein again.
  • Example IX Since the device 1500 of the present embodiment can be used to perform the above method, the technical effects that can be obtained can also be referred to the description in the above embodiment, and will not be described herein.
  • Example IX Example IX.
  • An embodiment of the present invention provides an uplink power control apparatus 1600, which is in this embodiment.
  • the device 1600 can be used to perform the corresponding operations in the foregoing method embodiments.
  • the device 1600 includes an obtaining unit 1601.
  • the obtaining unit 1601 is configured to obtain the number of the physical resource blocks PRB allocated by the second communication node to the UE, where the number of the PRBs is determined by the first communications node according to the current PHR of the UE, and then sent to the
  • the first communication node of the second communication node is a communication node corresponding to the primary serving cell of the UE, and the second communication node is a communication node corresponding to the secondary serving cell of the UE.
  • the acquiring unit 1601 is further configured to acquire, according to the number of the PRBs, a PUSCH transmission power of the UE on a corresponding carrier of the second communication node.
  • the apparatus 1600 further includes a transmitting unit 1602.
  • the sending unit 1602 is configured to send, by the radio resource management RRM, the current PHR of the UE to the first communications node, before the acquiring unit 1601 acquires the number of PRBs allocated by the second communications node to the UE.
  • the PHR is used to determine the number of the PRBs.
  • the obtaining unit 1601 is specifically configured to acquire, according to the following manner, the number of PRBs allocated by the second communication node to the UE:
  • the secondary serving cell includes a small cell.
  • Embodiment 10 Since the device 1600 of the present embodiment can be used to perform the above method, the technical effects that can be obtained can also be referred to the description in the above embodiments, and will not be described herein.
  • Embodiment 10
  • the embodiment of the present invention provides a first communication node 1800.
  • the first communication node 1800 in this embodiment can be used to perform the corresponding operations in the foregoing method embodiment. Specifically, as shown in FIG.
  • the receiving unit 1801 and the determining unit are included 1802 and sending unit 1803
  • the receiving unit 1801 is configured to receive a current PHR of the UE sent by the user terminal UE, where the first communication node 1800 is a communication node corresponding to the primary serving cell of the UE.
  • the determining unit 1802 is configured to determine, according to the PHR received by the receiving unit 1801, the number of physical resource blocks PRB allocated by the second communications node to the UE, where the second communications node is A communication node corresponding to the secondary serving cell of the UE.
  • the sending unit 1803 is configured to send, by the determining unit 1802, the number of the PRBs to the second communications node, so that the second communications node sends the number of the PRBs to the The number of the PRBs is used to obtain the PUSCH transmission power of the UE on the corresponding carrier of the second communication node.
  • the determining unit 1802 is specifically configured to determine, according to the PHR received by the receiving unit, the number of PRBs allocated by the second communications node to the UE:
  • ⁇ PUSCH 10(1) - o - H ) - ⁇ ( ⁇ ) ⁇
  • C denotes the carrier corresponding to the second communication node
  • M PUSQ ⁇ denotes the second communication node corresponding to the carrier
  • P PUSai , £ ( ') represents the uplink target power value, that is, the uplink expected power value of the second communication node corresponding to the carrier
  • P represents the downlink path loss estimate
  • ⁇ ') indicates large Scale fading weight factor, 0 or 1 or 2
  • the sending unit 1803 is specifically configured to send, by using the determining unit, the number of the PRBs to the second communications node as follows:
  • the secondary serving cell includes a small cell.
  • the method for performing the power back-off by the first communication node may be referred to the description of the third embodiment or the fifth embodiment, and details are not described herein again.
  • the first communication node 1800 of the present embodiment can be used to perform the above method. Therefore, the technical effects that can be obtained can also be referred to the description in the foregoing embodiment, and details are not described herein again.
  • the embodiment of the present invention provides a second communication node 1900.
  • the second communication node 1900 in this embodiment can be used to perform the corresponding operations in the foregoing method embodiment. Specifically, as shown in FIG. An acquisition unit 1901 and a transmission unit 1902 are included.
  • the obtaining unit 1901 is configured to acquire the number of the physical resource blocks PRB allocated by the second communication node 1900 to the user terminal UE, where the number of the PRBs is determined by the first communication node according to the current Determining, by the PHR, the first communication node is a communication node corresponding to the primary serving cell of the UE, and the second communication node 1900 is a communication node corresponding to the secondary serving cell of the UE.
  • the sending unit 1902 is configured to send the number of the PRBs acquired by the acquiring unit 1901 to the UE, where the number of the PRBs is used to acquire a carrier corresponding to the UE in the second communication node 1900.
  • the upper PUSCH transmission power is configured to send the number of the PRBs acquired by the acquiring unit 1901 to the UE, where the number of the PRBs is used to acquire a carrier corresponding to the UE in the second communication node 1900.
  • the obtaining unit 1901 is specifically configured to acquire, according to the following manner, the number of PRBs allocated by the second communication node to the user terminal UE:
  • the sending unit 1902 is specifically configured to send, by using the acquiring unit, the number of the PRBs to the UE in the following manner:
  • the power control signaling is sent to the UE, and the power control signaling carries the number of the RRBs.
  • the second communication node 1900 of the present embodiment can be used to perform the above method. Therefore, the technical effects that can be obtained can also be referred to the description in the foregoing embodiment, and details are not described herein again.
  • the processor 2001 is configured to obtain a power backoff parameter
  • PUSCH transmit power is a PUSCH transmit power of the UE2000 on a corresponding carrier of the first communication node
  • the second PUSCH transmit power The UE2000 transmits power to the PUSCH on the corresponding carrier of the second communication node, where the first communication node is a communication node corresponding to the primary serving cell of the UE2000, and the second communication node is a secondary serving cell of the UE2000.
  • the power back-off parameter includes a power back-off ratio factor, where the power back-off scale factor is a ratio of the first power back-off factor to the second power back-off factor, and the first power back
  • the fallback factor is a power backoff factor for the UE2000 to roll back the first PUSCH transmit power
  • the second power backoff factor is a power backoff factor for the UE2000 to roll back the second PUSCH transmit power.
  • the power backoff parameter includes a first interference value and a second interference value, where the first interference value is sent by the UE2000 The interference received by the physical resource block of the first communication node, where the second interference value is an interference received by the physical resource block sent by the UE2000 to the second communication node.
  • the processor 2001 is specifically configured to roll back the first PUSCH transmit power and the second PUSCH transmit power according to the power backoff scale factor as follows:
  • first PUSCH transmit power is backed off according to the first power backoff factor
  • second PUSCH transmit power is backed off according to the second power backoff factor
  • processor 2001 is specifically configured to obtain the first power backoff factor and the second power backoff factor respectively according to the power backoff scale factor as follows:
  • W i represents the first power backoff factor
  • ⁇ represents the second power backoff factor
  • gi represents a large-scale fading of the UE2000 to the first communication node. Indicates a large-scale fading of the UE2000 to the second communication node, and is an integer greater than one.
  • processor 2001 is specifically configured to obtain the first power backoff factor and the second power backoff factor respectively according to the power backoff scale factor as follows:
  • the processor 2001 is configured as follows The method performs backoff on the first PUSCH transmit power and the second PUSCH transmit power according to the first interference value and the second interference value:
  • first PUSCH transmit power is backed off according to the first power backoff factor
  • second PUSCH transmit power is backed off according to the second power backoff factor
  • processor 2001 is further configured to obtain the first power backoff factor and the second power backoff factor according to the first interference value and the second interference value, respectively, as follows:
  • the first power back-off factor and the second power back-off factor respectively:
  • K ⁇ is the sum of the number of the first communication node and the second communication node, and K ⁇ 2, and the number of the second communication node is - 1 ;
  • ⁇ denotes the first power backoff factor, indicating the first interference value; represents a large-scale fading of the UE to the first communication node; AMAX represents a maximum transmission power of the UE; Indicates the first PUSCH transmission power; when ⁇ 1, ⁇ denotes the second power backoff factor corresponding to the k1th second communication node, indicating the first corresponding to the second communication node Two dry a scrambling value; indicating a large-scale fading of the UE to the k-1th second communication node; AMAX indicating a maximum transmission power of the UE; indicating a second corresponding to the k1th second communication node PUSCH transmission power.
  • the secondary serving cell includes a small cell.
  • processor 2001 is specifically configured to obtain the power backoff parameter as follows:
  • the method for performing the power back-off by the UE2000 may be referred to the description of the first embodiment or the fourth embodiment, and details are not described herein again.
  • the UE2000 of the present embodiment can be used to perform the foregoing method. Therefore, the technical effects that can be obtained can also be referred to the description in the foregoing embodiment, and details are not described herein.
  • the embodiment of the present invention provides a first communication node 2100.
  • the first communication node 2100 in this embodiment can be used to perform a corresponding operation in the foregoing method embodiment.
  • the first communication node 2100 A processor 2101 and a transmitter 2102 are included.
  • the processor 2101 is configured to obtain a power backoff parameter, where
  • the power backoff parameter includes a power backoff ratio factor, where the power backoff scale factor is a ratio of a first power backoff factor to a second power backoff factor, and the first power
  • the rate back-off factor is a power back-off factor for the user terminal UE to roll back the first physical uplink shared channel PUSCH transmission power
  • the second power back-off factor is the power that the UE performs back-off for the second PUSCH transmission power.
  • a back-off factor where the first PUSCH transmission power is a PUSCH transmission power of the UE on a corresponding carrier of the first communication node 2100, and the second PUSCH transmission power is that the UE corresponds to a second communication node.
  • the first communication node 2100 is a communication node corresponding to a primary serving cell of the UE, and the second communication node is a communication node corresponding to a secondary serving cell of the UE; or
  • the first communication node 2100 is a communication node corresponding to the secondary serving cell of the UE, and the second communication node is a communication node corresponding to the primary serving cell of the UE.
  • the power backoff parameter includes a first interference value, and the first interference value is interference received by a physical resource block sent by the UE to the first communication node 2100;
  • the transmitter 2102 is configured to send the first interference value or the power back-off ratio factor obtained by the processor 2101 to the UE, where the first interference value is used for the first
  • the sum of the PUSCH transmit power and the second PUSCH transmit power exceeds the maximum transmit power of the UE, and the UE transmits the first PUSCH transmit power and the second according to the first interference value and the second interference value.
  • the PUSCH transmit power is backed off, where the second interference value is an interference value received by the UE from the second communication node and sent by the UE to the physical resource block of the second communication node; or
  • the power back-off scale factor is used to: if the sum of the first PUSCH transmit power and the second PUSCH transmit power exceeds a maximum transmit power of the UE, the UE compares the first according to a power back-off scale factor
  • the PUSCH transmission power and the second PUSCH transmission power are backed off.
  • the transmitter 2102 is specifically configured to send the interference value or the power backoff ratio factor acquired by the processor 2101 to the UE according to the following manner: sending power control signaling to the UE, where The power control signaling carries the interference value; or
  • the secondary serving cell includes a small cell.
  • the method for performing the power back-off by the first communication node 2100 may be referred to the description of the first embodiment or the fourth embodiment, and details are not described herein again.
  • the first communication node 2100 of the present embodiment can be used to perform the above method. Therefore, the technical effects that can be obtained can also be referred to the description in the foregoing embodiment, and details are not described herein again.
  • the embodiment of the present invention provides a user terminal UE2200.
  • the UE2200 in this embodiment can be used to perform the corresponding operations in the foregoing method embodiment.
  • the UE 2200 includes a transmitter 2202 coupled to the processor 2201. Receiver 2203 and memory 2204.
  • the processor 2201 is configured to
  • first PUSCH transmit power is a PUSCH transmit power of the UE 2200 on a corresponding carrier of the first communication node
  • second PUSCH transmit power The UE2200 transmits power to the PUSCH on the corresponding carrier of the second communication node, where the first communication node is a communication node corresponding to the primary serving cell of the UE 2200, and the second communication node is a secondary serving cell of the UE 2200. Corresponding communication node.
  • the first PUSCH transmission power and the third PUSCH transmission power are retracted according to the following formula:
  • i ⁇ / ⁇ is the number of the first cell
  • the first cell is a small cell included in the secondary serving cell of the UE 2200
  • 0 ⁇ ⁇ M and M is the number of the second cell
  • the second cell is a secondary serving cell other than the first cell included in the secondary serving cell of the UE 2200
  • Rate; u SC m denotes transmission power of the third pusCH, PUSCH transmission power of the third cell corresponding to the second PUSCH transmission power on a carrier
  • UE2200 W represents a first PUSCH transmission power and the a power back-off factor for the three PUSCH transmission power to perform the back-off; the maximum power of the UE2200 for the UE2200; pu CCH for the physical uplink control channel PUCCH transmission power of the UE2200; p pu Sav for the fourth PUSCH transmission power,
  • the fourth PUSCH transmission power is the PUSCH transmission power on the corresponding carrier of the first cell.
  • the method for performing the power back-off by the UE may refer to the description of the second embodiment, and details are not described herein again.
  • the UE2200 of the present embodiment can be used to perform the foregoing method. Therefore, the technical effects that can be obtained can also be referred to the description in the foregoing embodiment, and are not described herein again.
  • Embodiment 15
  • the embodiment of the present invention provides a user terminal UE2300.
  • the UE2300 in this embodiment can be used to perform the corresponding operations in the foregoing method embodiment.
  • the UE 2300 includes a transmitter 2302 coupled to the processor 2301. Receiver 2303 and memory 2304.
  • the processor 2301 is configured to
  • the first communication node is a communication node corresponding to the primary serving cell of the UE 2300
  • the second communication node is a communication node corresponding to the secondary serving cell of the UE 2300.
  • the processor 2301 is further configured to acquire, according to the number of the PRBs, a PUSCH transmission power of the UE2300 on a corresponding carrier of the second communication node.
  • the transmitter 2302 is configured to acquire, at the processor 2301, Before the number of the PRBs allocated by the second communication node to the UE2300, the current PHR of the UE2300 is sent to the first communication node by using the radio resource management RRM, where the PHR is used to determine the number of the PRBs.
  • the processor 2301 is specifically configured to obtain, according to the manner, the number of PRBs allocated by the second communication node to the UE2300:
  • the power control signaling sent by the second communication node is received by the receiver 2303, where the power control signaling carries the number of the RRBs.
  • the secondary serving cell includes a small cell.
  • the method for performing the power back-off by the UE may refer to the description in the third embodiment or the fifth embodiment, and details are not described herein again.
  • the UE2300 of the present embodiment can be used to perform the foregoing method. Therefore, the technical effects that can be obtained can also be referred to the description in the foregoing embodiment, and details are not described herein.
  • the embodiment of the present invention provides a first communication node 2400.
  • the first communication node 2400 in this embodiment can be used to perform the corresponding operations in the foregoing method embodiment. Specifically, as shown in FIG. 24, the first communication node 2400 is provided.
  • a receiver 2401, a processor 2402, and a transmitter 2403 are included.
  • the receiver 2401 is configured to receive a current PHR of the UE sent by the user terminal UE, where the first communication node 2400 is a communication node corresponding to the primary serving cell of the UE.
  • the processor 2402 is configured to determine, according to the PHR received by the receiver 2401, the number of physical resource blocks PRB allocated by the second communication node to the UE, where the second communication node is A communication node corresponding to the secondary serving cell of the UE.
  • the transmitter 2403 is configured to send, by the processor 2402, the number of the PRBs to the second communications node, so that the second communications node sends the number of the PRBs to the The number of the PRBs is used to obtain the PUSCH transmission power of the UE on the corresponding carrier of the second communication node. Further, the processor 2402 is specifically configured to determine, according to the PHR received by the receiver 2401, the number of PRBs allocated by the second communication node to the UE, as follows:
  • ⁇ PUSCH 10(1) - o - H ) - ⁇ ( ⁇ ) ⁇
  • C denotes the carrier corresponding to the second communication node
  • M PUSQ ⁇ denotes the second communication node corresponding to the carrier
  • P PUSai , £ ( ') represents the uplink target power value, that is, the uplink expected power value of the second communication node corresponding to the carrier
  • P represents the downlink path loss estimate
  • ⁇ ') indicates large Scale fading weight factor, 0 or 1 or 2
  • the transmitter 2403 is specifically configured to send the number of the PRBs determined by the processor 2402 to the second communication node as follows:
  • the secondary serving cell includes a small cell.
  • the method for performing the power back-off by the first communication node may be referred to the description of the third embodiment or the fifth embodiment, which is not described in detail in the embodiment of the present invention.
  • the first communication node 2400 of the embodiment can be used to perform the above method, the technical effects that can be obtained can also be referred to the description in the above embodiment.
  • the embodiment of the present invention provides a second communication node 2500.
  • the second communication node 2500 in this embodiment can be used to perform the corresponding operations in the foregoing method embodiment.
  • the second communication node 2500 A receiver 2502 and a transmitter 2503 coupled to the processor 2501 are included
  • the processor 2501 is configured to acquire, by the second communication node 2500, the number of physical resource blocks PRB allocated to the user terminal UE, where the number of the PRBs is determined by the first communication node according to the current Determined by the PHR, where the first communication node is a communication node corresponding to the primary serving cell of the UE, and the second communication node 2500 is a communication node corresponding to the secondary serving cell of the UE.
  • the transmitter 2503 is configured to send, by the processor 2501, the number of the PRBs to the UE, where the number of the PRBs is used to acquire a carrier corresponding to the UE at the second communication node 2500.
  • the upper PUSCH transmission power is configured to send, by the processor 2501, the number of the PRBs to the UE, where the number of the PRBs is used to acquire a carrier corresponding to the UE at the second communication node 2500.
  • the processor 2501 is specifically configured to acquire the number of PRBs allocated by the second communication node 2500 to the user terminal UE as follows:
  • a request message sent by the first communications node where the request message is used to request to add a cell corresponding to the second communications node 2500 as a secondary serving cell of the UE, where The request message carries the number of the PRBs.
  • the transmitter 2503 is specifically configured to send the number of the PRBs acquired by the processor 2501 to the UE as follows:
  • the power control signaling is sent to the UE, and the power control signaling carries the number of the RRBs.
  • the method for performing the power back-off by the second communication node 2500 may refer to the description in the third embodiment or the fifth embodiment, which is not repeatedly described in the embodiment of the present invention.
  • the second communication node 2500 of the present embodiment can be used to perform the foregoing method. Therefore, the technical effects that can be obtained can also be referred to the description in the foregoing embodiment, and details are not described herein again.
  • the division of the modules or units is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, i.e., may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiment of the present embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention may be embodied in the form of a software product in the form of a software product, or a part of the technical solution, which is stored in a storage medium.
  • the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program code. .

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

Abstract

La présente invention se rapporte au domaine des communications. Des modes de réalisation de la présente invention concernent un procédé et un dispositif de commande de puissance de liaison montante, qui peuvent surmonter un problème existant dans l'état antérieur de la technique qui peut amener une puissance d'émission de PUSCH après baisse de puissance à être incorrecte, et donc à nuire aux performances du système. Le procédé comprend les opérations suivantes: un UE obtient un paramètre de baisse de puissance et obtient une première puissance d'émission de PUSCH et une seconde puissance d'émission de PUSCH, le paramètre de baisse de puissance comprenant un facteur d'échelle de baisse de puissance ou le paramètre de baisse de puissance comprenant une première valeur de brouillage et une seconde valeur de brouillage; et si une somme de la première puissance d'émission de PUSCH et de la seconde puissance d'émission de PUSCH dépasse une puissance d'émission maximale de l'UE, l'UE baisse la première puissance d'émission de PUSCH et la seconde puissance d'émission de PUSCH sur la base de la première valeur de brouillage et de la seconde valeur de brouillage, ou baisse la première puissance d'émission de PUSCH et la seconde puissance d'émission de PUSCH sur la base du facteur d'échelle de baisse de puissance.
PCT/CN2013/084695 2013-09-30 2013-09-30 Procédé et dispositif de commande de puissance de liaison montante WO2015042942A1 (fr)

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CN201380002238.1A CN104995970A (zh) 2013-09-30 2013-09-30 上行功率控制方法和设备

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