WO2013023612A1 - CoMP系统中上行功率控制的补偿方法及基站、用户设备 - Google Patents

CoMP系统中上行功率控制的补偿方法及基站、用户设备 Download PDF

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Publication number
WO2013023612A1
WO2013023612A1 PCT/CN2012/080242 CN2012080242W WO2013023612A1 WO 2013023612 A1 WO2013023612 A1 WO 2013023612A1 CN 2012080242 W CN2012080242 W CN 2012080242W WO 2013023612 A1 WO2013023612 A1 WO 2013023612A1
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WO
WIPO (PCT)
Prior art keywords
uplink
adjustment value
power
base station
srs
Prior art date
Application number
PCT/CN2012/080242
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English (en)
French (fr)
Inventor
张佳胤
倪威
任晓涛
倪俊
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 EP12823789.8A priority Critical patent/EP2747495B1/en
Publication of WO2013023612A1 publication Critical patent/WO2013023612A1/zh
Priority to US14/180,556 priority patent/US9924473B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/14Separate analysis of uplink or downlink
    • H04W52/146Uplink power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/247TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where the output power of a terminal is based on a path parameter sent by another terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/36TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/362Aspects of the step size
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/36TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367Power values between minimum and maximum limits, e.g. dynamic range
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/38TPC being performed in particular situations
    • H04W52/40TPC being performed in particular situations during macro-diversity or soft handoff
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022Site diversity; Macro-diversity
    • H04B7/024Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035Resource allocation in a cooperative multipoint environment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/248TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where transmission power control commands are generated based on a path parameter
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/32TPC of broadcast or control channels
    • H04W52/325Power control of control or pilot channels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/38TPC being performed in particular situations
    • H04W52/50TPC being performed in particular situations at the moment of starting communication in a multiple access environment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/54Signalisation aspects of the TPC commands, e.g. frame structure
    • H04W52/58Format of the TPC bits

Definitions

  • the present invention relates to communication technologies, and in particular, to a method for compensating uplink power control in a Coordinated Multi-Point (CoMP) system, a base station, and a user equipment.
  • CoMP Coordinated Multi-Point
  • LTE Long Term Evolution
  • LTE-A advanced Long Term Evolution Advanced
  • eB Evolved Node B
  • the received power of the UE is approximately at the same level when it arrives at the Evolved Node B (eB) to avoid interference between user equipments due to the near-far effect.
  • the signal is usually received according to the reference signal (Reference Signal Receiving Power).
  • Path Loss (PL for short) referred to as RSRP, uses uplink power control for the UE.
  • the data receiving point of the uplink data transmission may be inconsistent with the data transmission point of the downlink data transmission, and the path loss to be compensated is also different.
  • the calculation method cannot satisfy this function, and the uplink power control performed by the UE according to the path loss obtained by the prior art may be inaccurate, thereby reducing the quality of uplink data transmission.
  • the embodiment of the invention provides a method for compensating uplink power control in a CoMP system, and a base station and a user equipment, to improve the quality of uplink data transmission.
  • An aspect of the present invention provides a method for compensating uplink power control in a CoMP system, including: determining, by a base station, an adjustment value of an uplink transmit power of a UE;
  • the base station sends the indication information and the adjustment value of the uplink transmission power of the UE to the UE, where the indication information is used to indicate a range of the adjustment value of the uplink transmission power of the UE, so that the UE is configured according to the The indication information and an adjustment value of the uplink transmission power of the UE determine an uplink transmission power of the UE.
  • Another aspect of the present invention provides a method for compensating uplink power control in a CoMP system, including: The user equipment UE receives the indication information sent by the base station and the adjustment value of the uplink transmission power of the UE, where the indication information is used to indicate a range of the adjustment value of the uplink transmission power of the UE;
  • the UE determines an uplink transmit power of the UE according to the indication information and an adjustment value of an uplink power of the UE.
  • a base station including:
  • a determining unit configured to determine an adjustment value of an uplink transmit power of the user equipment UE
  • a sending unit configured to send, to the UE, indication information, and an adjustment value of an uplink transmit power of the UE determined by the determining unit, where the indication information is used to indicate a range of an adjustment value of an uplink transmit power of the UE, And determining, by the UE, an uplink sending power of the UE according to the indication information and an adjustment value of an uplink sending power of the UE.
  • Another aspect of the present invention provides a UE, including:
  • a receiving unit configured to receive indication information sent by the base station, and an adjustment value of the uplink transmission power of the UE, where the indication information is used to indicate a range of an adjustment value of the uplink transmission power of the UE;
  • a processing unit configured to determine an uplink transmit power of the UE according to the indication information received by the receiving unit and an adjustment value of an uplink power of the UE.
  • the base station after the base station determines the adjustment value of the uplink transmission power of the UE, the base station sends the indication information indicating the range of the adjustment value of the uplink transmission power of the UE to the UE, and the uplink of the UE.
  • the adjustment value of the transmit power is such that the UE can determine the uplink transmit power of the UE according to the foregoing indication information and the adjusted value of the uplink transmit power of the UE, which can avoid the data receiving point in the prior art due to uplink data transmission in the CoMP system.
  • the uplink power control performed by the UE through the obtained path loss may be inaccurate due to the inconsistency of the data transmission point of the downlink data transmission, thereby improving the quality of the uplink data transmission.
  • FIG. 1 is a schematic flowchart of a method for compensating uplink power control in a CoMP system according to an embodiment of the present invention
  • 2 is a schematic flowchart of a method for compensating uplink power control in a CoMP system according to another embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a base station according to another embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a base station according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a base station according to another embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a UE according to another embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a UE according to another embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a UE according to another embodiment of the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.
  • the embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • FIG. 1 is a schematic flowchart of a method for compensating uplink power control in a CoMP system according to an embodiment of the present invention. As shown in FIG. 1 , a method for compensating uplink power control in a CoMP system in this embodiment may include:
  • the base station determines an adjustment value of the uplink transmit power of the UE.
  • the base station can obtain the path loss (ie, the theoretically calculated path loss minus the path loss obtained by the RSRP measurement) according to the theoretically calculated path loss (ie, the target path loss) and the path loss obtained by the RSRP measurement.
  • the path loss difference is used as an adjustment value of the uplink transmission power of the UE for uplink power control.
  • the fourth scenario of the CoMP system mainly consists of a macro station (Macro Site) and a Radio Remote Head (RRH) in a macro station area.
  • R Radio Remote Head
  • the target path loss PL calculated by the base station by theory can be expressed as follows:
  • PL C -10 log 10 ; where, is the path loss from the macro station or RRH to the UE,
  • the adjustment value of the uplink transmit power of the UE determined by the base station may include at least one of the following conditions: uplink work for the Physical Uplink Shared CHannel (PUSCH) Rate adjustment of the uplink transmit power of the UE, ie the formula
  • the adjustment value of the uplink transmission power of the UE may include the uplink transmission power of the UE related to the PUSCH.
  • At least one of an adjustment value and an adjustment value of an uplink transmission power of a UE related to the SRS, that is, a formula P SRS (i) minj PeMAX ' . . , .
  • the quantity, f(i) represents the closed-loop adjustment part of the power control.
  • 3 ⁇ 4 ⁇ is the number of bits of the hybrid automatic repeat request
  • n SR is the number of scheduling request bits
  • h( neQI , nHARQ , n SR ) is a value based on the PUCCH format
  • F and F' are PUCCH formats
  • ⁇ ⁇ (F) is a value of PUCCH format F relative to PUCCH format la
  • a T ⁇ (F ') is a value associated with transmitting PUCCH
  • P SRS -- ⁇ ⁇ indicates the offset of SRS transmit power
  • M SRS indicates the bandwidth of SRS.
  • the base station sends the indication information and the adjustment value of the uplink transmission power of the UE to the UE, where the indication information is used to indicate a range of the adjustment value of the uplink transmission power of the UE, so that the UE is configured according to the indication information and the UE.
  • the adjustment value of the uplink transmission power determines the uplink transmission power of the UE.
  • the base station in 101 and 102 sends an instruction sequence to the UE that the indication information is not fixed, and the base station may send the indication information to the UE before determining the adjustment value of the uplink transmission power of the UE, or may determine the uplink of the UE.
  • the foregoing indication information is sent to the UE after the adjustment value of the transmission power, which is not limited in this embodiment.
  • the base station may send, to the UE, an adjustment value indicating the uplink transmit power of the UE in multiple manners.
  • the indication of the range For example, the base station may send the indication information to the UE by using the high layer signaling, and may indicate, to the UE, a range of the adjustment value of the uplink transmission power of the UE.
  • the base station may further send the indication information to the UE by using a new common signaling in a physical downlink control channel (PDCCH), to indicate, to the UE, an adjustment value of the uplink transmit power of the UE.
  • PDCCH physical downlink control channel
  • the adjustment value of the uplink transmit power of the UE may be identified by using more than four bits, where the step size of the adjusted value of the uplink transmit power of the identified UE is equal to ldB or greater than ldB.
  • the step size of the adjusted value of the uplink transmit power of the identified UE is equal to ldB or greater than ldB.
  • the step size is ldB, then the power range that can be identified is -8dB ⁇ 7dB; it can be identified by 4 bits, and the step size is 2dB, then the power range that can be identified is -23dB ⁇ 7dB;
  • the base station after the base station determines the adjustment value of the uplink transmission power of the UE, the base station sends, to the UE, indication information indicating a range of the adjustment value of the uplink transmission power of the UE, and an adjustment value of the uplink transmission power of the UE,
  • the UE can determine the uplink transmit power of the UE according to the foregoing indication information and the adjusted value of the uplink transmit power of the UE, which can avoid the fact that the data receiving point in the CoMP system may be transmitted with the downlink data due to the uplink data transmission in the prior art.
  • the path loss obtained by the UE caused by the inconsistent data transmission point is not accurate enough for the uplink power control, thereby improving the quality of the uplink data transmission.
  • FIG. 2 is a schematic flowchart of a method for compensating uplink power control in a CoMP system according to another embodiment of the present invention. As shown in FIG. 2, the method for compensating uplink power control in the CoMP system of this embodiment may include:
  • the UE receives the indication information sent by the base station and the adjustment value of the uplink transmission power of the UE, where the indication information is used to indicate a range of the adjustment value of the uplink transmission power of the UE.
  • the adjustment value of the uplink transmit power of the UE is determined by the base station.
  • the base station For the specific method, refer to the related content in the corresponding embodiment of FIG. 1 , and details are not described herein again.
  • the adjustment value of the uplink transmit power of the UE sent by the base station received by the UE may include at least one of the following conditions:
  • the adjustment value of the uplink transmit power of the UE for uplink power control of the Physical Uplink Control CHannel that is, the formula PO PUCCH of Ppuccnl 1 ) ;
  • the adjustment value of the uplink transmit power of the UE may include the uplink transmit power of the UE related to the PUCCH.
  • At least one of an adjustment value and an adjustment value of an uplink transmission power of a UE related to the SRS, that is, a formula P SRS (i) minj PeMAX ' . . , .
  • P and pp where i denotes a subframe, j denotes a packet type in the cell, P eMAX denotes a maximum allowable power, and M PUSCH (i) denotes a bandwidth of PUSCH transmission, P. — PUSeH (j) and P. – PuecH (j) is the nominal power that the base station sets semi-statically for all UEs in the cell.
  • a(j) is the path loss compensation factor
  • PL e is the target path loss
  • a ⁇ (i) is based on modulation and coding.
  • the power offset of the data type, f(i) represents the closed loop adjustment part of the power control.
  • ⁇ 3 ⁇ is the number of bits of the channel quality information
  • 3 ⁇ 4 ⁇ is the number of bits of the hybrid automatic repeat request
  • n SR is the number of scheduling request bits
  • h( neQI , nHARQ , n SR ) is the value based on the PUCCH format
  • F and F′ are PUCCH format
  • ⁇ (F) is the value of PUCCH format F relative to PUCCH format la
  • a T ⁇ (F ') is the value associated with the transmission PUCCH
  • g(i) is the PUCCH power control adjustment state factor
  • ⁇ ⁇ indicates the offset of the SRS transmission power
  • M SRS indicates the bandwidth of the SRS.
  • the UE determines an uplink transmit power of the UE according to the indication information and an adjustment value of an uplink transmit power of the UE.
  • the UE may receive, by using multiple manners, indication information that is sent by the base station and indicates a range of adjustment values of the uplink transmit power of the UE.
  • the UE may receive the foregoing indication information sent by the base station by using the high layer signaling to indicate a range of the adjustment value of the uplink transmission power of the UE.
  • the UE may further receive the indication information sent by the base station by using a new common signaling in the PDCCH, and indicate the range of the adjustment value of the uplink transmission power of the UE.
  • the adjustment value of the uplink transmit power of the UE may be identified by using more than four bits, where the step size of the adjusted value of the uplink transmit power of the identified UE is equal to ldB or greater than ldB.
  • the step size of the adjusted value of the uplink transmit power of the identified UE is equal to ldB or greater than ldB.
  • the step size is ldB, then the power range that can be identified is -8dB ⁇ 7dB; it can be identified by 4 bits, and the step size is 2dB, then the power range that can be identified is -23dB ⁇ 7dB;
  • the UE receives an adjustment value that is sent by the base station and is used to indicate the uplink transmission power of the UE.
  • the indication information of the range and the adjustment value of the uplink transmission power of the UE so that the UE can determine the uplink transmission power of the UE according to the indication information and the adjustment value of the uplink transmission power of the UE, which can avoid the prior art due to the CoMP.
  • the data loss point of the uplink data transmission may be inconsistent with the path loss obtained by the UE due to the inconsistency of the data transmission point of the downlink data transmission, thereby improving the quality of the uplink data transmission.
  • GSM Global System for Mobile Communications
  • GPRS General Packet Radio Service
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • TD-SCDMA Time Division-Synchronous Code Division Multiple Access
  • LTE Long Term Evolution
  • the base station may be a base station (Base Transceiver Station, BTS for short) in a GSM system, a GPRS system or a CDMA system, or a base station (NodeB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node).
  • B Base Transceiver Station
  • GPRS Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • NodeB base station
  • Evolutional Node evolved base station in an LTE system
  • FIG. 3 is a schematic structural diagram of a base station according to another embodiment of the present invention.
  • the base station in this embodiment may include a determining unit 31 and a sending unit 32.
  • the determining unit 31 is configured to determine an adjustment value of the uplink transmit power of the UE.
  • the sending unit 32 is configured to send, to the UE, an indication value and an adjustment value of the uplink transmit power of the UE determined by the determining unit 31, where the indication information is used to indicate And determining, by the determining unit 31, a range of the adjustment value of the uplink transmission power of the UE, so that the UE determines the uplink transmission power of the UE according to the indication information and the adjustment value of the uplink transmission power of the UE.
  • the functions of the base station in the foregoing embodiment corresponding to FIG. 1 can be implemented by the base station provided in this embodiment.
  • the sending unit 32 in this embodiment may send the indication information to the UE by using the high layer signaling, or may send the indication information to the UE by using a PDCCH.
  • the adjustment value of the uplink transmit power of the UE determined by the determining unit 31 in this embodiment may be identified by 4 bits, and the step of identifying the uplink transmit power of the UE by using the foregoing 4 bits is greater than Or equal to ldB; or may be identified by more than 4 bits, and the step size of the adjustment value of the uplink transmission power of the UE is greater than or equal to ldB by using the above-mentioned greater than 4 bits.
  • the determining unit in this embodiment may include at least one of the following subunits: a first determining subunit 41, a second determining subunit 42 and a third determining subunit 43. among them,
  • a first determining subunit 41 configured to determine an adjustment value of an uplink transmit power of a UE for uplink power control of the PUSCH;
  • a second determining subunit 42 configured to determine an adjusted value of an uplink transmit power of a UE for uplink power control of the PUCCH
  • the third determining subunit 43 is configured to determine an adjusted value of the uplink transmit power of the UE for uplink power control of the SRS.
  • the third determining subunit 43 may include at least one of the following modules: a first determining module 51 and a second determining module 52. among them,
  • a first determining module 51 configured to determine an adjustment value of a uplink transmit power of a PUSCH-related UE for uplink power control of the SRS;
  • the second determining module 52 is configured to determine an adjustment value of an uplink transmit power of the SRS-related UE for uplink power control of the SRS.
  • the sending unit sends, by the sending unit, indication information indicating a range of the adjustment value of the uplink transmission power of the UE, and an uplink sending power of the UE.
  • the adjustment value is such that the UE can determine the uplink transmission power of the UE according to the foregoing indication information and the adjustment value of the uplink transmission power of the UE, which can avoid the prior art data reception point due to uplink data transmission in the CoMP system.
  • the path loss obtained by the UE caused by the inconsistent data transmission point of the downlink data transmission is not accurate enough for the uplink power control, thereby improving the quality of the uplink data transmission.
  • FIG. 6 is a schematic structural diagram of a UE according to another embodiment of the present invention.
  • the UE in this embodiment may include a receiving unit 61 and a processing unit 62.
  • the receiving unit 61 is configured to receive the indication information sent by the base station and the adjustment value of the uplink transmission power of the UE, where the indication information is used to indicate a range of the adjustment value of the uplink transmission power of the UE, and the processing unit 62 is configured to use the receiving unit.
  • the received indication information received by the 61 and the uplink power adjustment value of the UE determine the uplink transmission power of the UE.
  • the function of the UE in the embodiment corresponding to FIG. 2 above may be implemented by the UE provided in this embodiment.
  • the receiving unit 61 in this embodiment may receive the foregoing indication information sent by the base station by using the high layer signaling, or may receive the indication information sent by the base station by using the PDCCH.
  • the adjustment value of the uplink transmit power of the UE that is received by the receiving unit 61 in this embodiment may be identified by using four bits, and that the step of adjusting the uplink transmit power of the UE by using the four bits is greater than the step size. Or equal to ldB; or may be identified by more than 4 bits, and the step size of the adjustment value of the uplink transmission power of the UE is greater than or equal to ldB by using the above-mentioned greater than 4 bits.
  • the receiving unit 71 in this embodiment may include at least one of the following subunits: a first receiving subunit 71, a second receiving subunit 72, and a third receiving subunit 73. among them,
  • the first receiving subunit 71 is configured to receive, by the base station, an adjustment value of an uplink transmit power of the UE for uplink power control of the PUSCH;
  • a second receiving sub-unit 72 configured to receive an adjustment value of an uplink transmit power of the UE used by the base station for uplink power control of the PUCCH;
  • the third receiving subunit 73 is configured to receive an adjustment value of the uplink sending power of the UE used for uplink power control of the SRS sent by the base station.
  • first receiving sub-unit 71 the second receiving sub-unit 72 and the third receiving sub-unit 73 are simultaneously included in FIG. 7. In an optional embodiment, only the above may be included. One or two of the three subunits.
  • the third receiving sub-unit 73 may include at least one of the following modules: a first receiving module 81 and a second receiving module 82. among them,
  • the first receiving module 81 is configured to receive, by the base station, an adjustment value of an uplink transmit power of the UE related to the PUSCH for uplink power control of the SRS;
  • the second receiving module 82 is configured to receive, by the base station, an adjustment value of the uplink transmit power of the UE related to the SRS for uplink power control of the SRS.
  • first receiving module 81 and the second receiving module 82 are simultaneously shown in FIG. Moreover, in an optional embodiment, only one of the above two modules may be included.
  • the UE receives, by the receiving unit, the indication information that is used by the base station to indicate the range of the adjustment value of the uplink transmission power of the UE, and the adjustment value of the uplink transmission power of the UE, so that the processing unit can
  • the uplink transmission power of the UE is determined by the adjustment value of the uplink transmission power of the UE, which can avoid the UE in the prior art that the data reception point of the uplink data transmission may be inconsistent with the data transmission point of the downlink data transmission in the CoMP system.
  • the obtained path loss carries out the problem that the uplink power control is not accurate enough, thereby improving the quality of uplink data transmission.
  • the disclosed systems, apparatus, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual 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 purpose of the solution of the 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 hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional units are stored in a storage medium and include instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform part of the steps of the method of the various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a disk or an optical disk, and the like, which can store program codes. Medium.

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Abstract

本发明实施例提供一种CoMP系统中上行功率控制的补偿方法及基站、用户设备,一种方法包括:基站确定UE的上行发送功率的调整值;所述基站向所述UE发送指示信息以及所述 UE的上行发送功率的调整值,所述指示信息用于指示所述UE的上行发送功率的调整值的范围,以使所述UE根据所述指示信息以及所述UE的上行发送功率的调整值确定所述UE的上行发送功率。本发明实施例能够避免现有技术中由于在CoMP系统中由于上行数据传输的数据接收点可能与下行数据传输的数据发送点不一致而导致的UE获得的路径损耗进行上行功率控制不够精确的问题,从而提高了上行数据发送的质量。

Description

CoMP系统中上行功率控制的补偿方法及基站、 用户设备 本申请要求于 2011年 8月 16日提交中国专利局、 申请号为 201110234795.9、 发明 名称为 "CoMP系统中上行功率控制的补偿方法及基站、 用户设备" 的中国专利申请的 优先权, 其全部内容通过引用结合在本申请中。 技术领域 本发明实施例涉及通信技术, 尤其涉及协作多点传输 (Coordinated Multi-Point, 简 称 CoMP) 系统中上行功率控制的补偿方法及基站、 用户设备。 背景技术 在通信系统, 例如: 长期演进 (Long Term Evolution, 简称 LTE) 系统和先进的长 期演进 (Long Term Evolution Advanced, 简称: LTE- A) 系统, 中, 为了使不同用户设备 (User Equipment, 简称 UE) 到达演进型基站 (Evolved Node B, 简称 e B) 时的接收 功率大致处于相同水平, 以避免由于远近效应而造成的用户设备间的干扰, 通常会根据 参考信号接收功率(Reference Signal Receiving Power,简称 RSRP)获得的路径损耗(Path Loss, 简称 PL) 对 UE采用上行功率控制。
然而, 在协作多点传输 (Coordinated Multi-Point, 简称 CoMP) 系统中, 上行数据 传输的数据接收点可能与下行数据传输的数据发送点不一致, 需要补偿的路径损耗也不 同, 现有路径损耗的计算方法无法满足这一功能, 则 UE根据现有技术获得的路径损耗 而进行上行功率控制会不够精确, 从而降低了上行数据发送的质量。 发明内容
本发明实施例提供 CoMP系统中上行功率控制的补偿方法及基站、用户设备, 用以 提高上行数据发送的质量。
本发明一方面提供了一种 CoMP系统中上行功率控制的补偿方法, 包括: 基站确定 UE的上行发送功率的调整值;
所述基站向所述 UE发送指示信息以及所述 UE的上行发送功率的调整值, 所述指 示信息用于指示所述 UE的上行发送功率的调整值的范围, 以使所述 UE根据所述指示 信息以及所述 UE的上行发送功率的调整值确定所述 UE的上行发送功率。
本发明另一方面提供了一种 CoMP系统中上行功率控制的补偿方法, 包括: 用户设备 UE接收基站发送的指示信息和所述 UE的上行发送功率的调整值, 所述 指示信息用于指示所述 UE的上行发送功率的调整值的范围;
所述 UE根据所述指示信息以及所述 UE的上行功率的调整值确定所述 UE的上行 发送功率。
本发明另一方面提供了一种基站, 包括:
确定单元, 用于确定用户设备 UE的上行发送功率的调整值;
发送单元, 用于向所述 UE发送指示信息和所述确定单元确定的所述 UE的上行发 送功率的调整值, 所述指示信息用于指示所述 UE的上行发送功率的调整值的范围, 以 使所述 UE根据所述指示信息以及所述 UE的上行发送功率的调整值确定所述 UE的上 行发送功率。
本发明另一方面提供了一种 UE, 包括:
接收单元, 用于接收基站发送的指示信息和所述 UE的上行发送功率的调整值, 所 述指示信息用于指示所述 UE的上行发送功率的调整值的范围;
处理单元, 用于根据所述接收单元接收的所述指示信息以及所述 UE的上行功率的 调整值确定所述 UE的上行发送功率。
由上述技术方案可知,本发明实施例在基站确定 UE的上行发送功率的调整值之后, 通过基站向 UE发送用于指示上述 UE的上行发送功率的调整值的范围的指示信息和上 述 UE的上行发送功率的调整值, 使得 UE能够根据上述指示信息和 UE的上行发送功 率的调整值, 确定上述 UE的上行发送功率, 能够避免现有技术中由于在 CoMP系统中 由于上行数据传输的数据接收点可能与下行数据传输的数据发送点不一致而导致的 UE 通过获得的路径损耗而进行的上行功率控制不够精确的问题, 从而提高了上行数据发送 的质量。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实施例或现有 技术描述中所需要使用的附图作一简单地介绍, 显而易见地, 下面描述中的附图是本发 明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还可 以根据这些附图获得其他的附图。
图 1 为本发明一实施例提供的 CoMP系统中上行功率控制的补偿方法的流程示意 图; 图 2为本发明另- -实施例提供的 CoMP系统中上行功率控制的补偿方法的流程示意 图 3为本发明另- 实施例提供的基站的结构示意图;
图 4为本发明另- 实施例提供的基站的结构示意图;
图 5为本发明另- 实施例提供的基站的结构示意图;
图 6为本发明另- 实施例提供的 UE的结构示意图;
图 7为本发明另- 实施例提供的 UE的结构示意图;
图 8为本发明另- 实施例提供的 UE的结构示意图。 具体实施方式 为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本发明实施例中 的附图, 对本发明实施例中的技术方案进行清楚、 完整地描述, 显然, 所描述的实施例 是本发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技 术人员在没有作出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范 围。
图 1 为本发明一实施例提供的 CoMP系统中上行功率控制的补偿方法的流程示意 图, 如图 1所示, 本实施例的 CoMP系统中上行功率控制的补偿方法可以包括:
101、 基站确定 UE的上行发送功率的调整值;
例如: 基站可以根据理论计算得到的路径损耗(即目标路损) 与 RSRP测量得到的 路径损耗, 获得路径损耗差值(即理论计算得到的路径损耗减去 RSRP测量得到的路径 损耗), 将该路径损耗差值作为用于上行功率控制的 UE的上行发送功率的调整值。
为使得本发明实施例提供的方法更加清楚,下面将以 CoMP系统的第四种场景作为 举例。 CoMP系统的第四种场景主要由在一个宏站区域内的宏站(Macro Site)和射频拉 远单元 (Radio Remote Head, 简称 RRH) 组成一个小区。 假设实际参与上行联合接收 的宏站和 RRH的集合用 R表示,则基站通过理论计算出的目标路损 PL 可以如下表示:
Figure imgf000005_0001
PLC = -10 log 10 ; 其中, 为从宏站或 RRH到 UE之间的路损,
ieR 具体地,基站确定的 UE的上行发送功率的调整值可以包括下列情况中的至少一项: 用于物理上行共享信道 (Physical Uplink Shared CHannel, 简称 PUSCH) 的上行功 率 控 制 的 UE 的 上 行 发 送 功 率 的 调 整 值 , 即 公 式
P (i) = min , ^中的 P。 PTT.nw(i);
101og10(M PUSCH PUSCH
用于物理上行控制信道(Physical Uplink Control CHannel, 简称 PUCCH) 的上行功 率 控 制 的 UE 的 上 行 发 送 功 率 的 调 整 值 , 即 公 式 PO PUCCH ;
Figure imgf000006_0001
用于探测参考信号 (Sounding Reference Signal, 简称 SRS) 的上行功率控制的 UE 的上行发送功率的调整值,具体地,该 UE的上行发送功率的调整值可以包括与 PUSCH 相关的 UE的上行发送功率的调整值和与 SRS相关的 UE的上行发送功率的调整值中的 至少一个,即公式 PSRS (i) = minjPeMAX' . . ,.、 中的
PsRS OFFSET + 101og10(MSRS) + Po PUSCH (j)+a(j)-PLc +f(i) p SRS— OFFSET禾 p p0— PUSCH (Ί 中 1 的 U J J牵^小一个 I · ≤中 I , 其中, i表示子帧, j表示小区内数据包类型, PeMAX表示最大允许功率, MPUSCH(i)为 PUSCH传输的带宽, P PUSeH(j)和 P PuecH(j)为基站为小区内的所有 UE半静态地设定的 标称功率, a(j)为路损补偿因子, PLe为目标路损, A^(i)为基于调制编码方式和数据类 型的功率偏移量, f(i)代表功率控制的闭环调整部分。 为信道质量信息的比特数, ¾^为混合自动重传请求的比特数, nSR为调度请求比特数, h(neQI,nHARQ,nSR)为基于 PUCCH格式的值, F和 F'为 PUCCH格式, ^ ^(F)为 PUCCH格式 F相对于 PUCCH 格式 la的值, AT^(F ')为传输 PUCCH相关的值, g(i)为 PUCCH功率控制调整状态因 子, PSRS―。 ^ΕΤ表示 SRS发送功率的偏移量, MSRS表示 SRS的带宽。
102、上述基站向上述 UE发送指示信息以及上述 UE的上行发送功率的调整值, 上 述指示信息用于指示上述 UE的上行发送功率的调整值的范围, 以使上述 UE根据上述 指示信息以及上述 UE的上行发送功率的调整值确定上述 UE的上行发送功率。
需要说明的是: 101与 102中的基站向上述 UE发送指示信息没有固定的执行顺序, 基站可以在确定 UE的上行发送功率的调整值之前向 UE发送上述指示信息, 也可以在 确定 UE的上行发送功率的调整值之后向 UE发送上述指示信息, 本实施例对此不进行 限定。
可选地, 基站可以通过多种方式向 UE发送指示上述 UE的上行发送功率的调整值 的范围的指示信息。 例如: 基站可以通过高层信令向 UE发送上述指示信息, 用以向上 述 UE指示上述 UE的上行发送功率的调整值的范围。 再例如: 基站还可以通过物理下 行控制信道 (Physical Downlink Control CHannel, 简称 PDCCH) 中的一条新的普通信 令向 UE发送上述指示信息, 用以向上述 UE指示上述 UE的上行发送功率的调整值的 范围。
具体地, 上述 UE的上行发送功率的调整值可以通过 4个以上比特标识, 其中, 所 标识的 UE的上行发送功率的调整值的步长等于 ldB或大于 ldB。 例如: 可以通过 4个 比特标识, 步长为 ldB, 则可以标识的功率范围为 -8dB~7dB; 可以通过 4个比特标识, 步长为 2dB, 则可以标识的功率范围为 -23dB~7dB; 再例如: 还可以通过 5个比特标识, 步长为 ldB, 则可以标识的功率范围为 -24dB~7dB。
本实施例中, 基站确定 UE的上行发送功率的调整值之后, 通过基站向 UE发送用 于指示上述 UE的上行发送功率的调整值的范围的指示信息和上述 UE的上行发送功率 的调整值, 使得 UE能够根据上述指示信息和 UE的上行发送功率的调整值, 确定上述 UE的上行发送功率, 能够避免现有技术中由于在 CoMP系统中由于上行数据传输的数 据接收点可能与下行数据传输的数据发送点不一致而导致的 UE获得的路径损耗进行上 行功率控制不够精确的问题, 从而提高了上行数据发送的质量。
图 2为本发明另一实施例提供的 CoMP系统中上行功率控制的补偿方法的流程示意 图, 如图 2所示, 本实施例的 CoMP系统中上行功率控制的补偿方法可以包括:
201、 UE接收基站发送的指示信息和上述 UE的上行发送功率的调整值, 上述指示 信息用于指示上述 UE的上行发送功率的调整值的范围;
其中, 上述 UE的上行发送功率的调整值为基站确定的, 具体方法可以参见图 1对 应的实施例中的相关内容, 此处不再赘述。
具体地, UE接收的基站发送的上述 UE的上行发送功率的调整值可以包括下列情 况中的至少一项:
用于物理上行共享信道 (Physical Uplink Shared CHannel, 简称 PUSCH) 的上行功 率 控 制 的 UE 的 上 行 发 送 功 率 的 调 整 值 , 即 公 式
Pp w (i) = min 中的 Ρ。。 „ ( ϊ); 一 101og10(M PUSCH PUSCH
Figure imgf000007_0001
用于物理上行控制信道(Physical Uplink Control CHannel, 简称 PUCCH) 的上行功 率 控 制 的 UE 的 上 行 发 送 功 率 的 调 整 值 , 即 公 式 Ppuccnl1) 的 PO PUCCH ;
Figure imgf000008_0001
用于探测参考信号 (Sounding Reference Signal, 简称 SRS) 的上行功率控制的 UE 的上行发送功率的调整值,具体地,该 UE的上行发送功率的调整值可以包括与 PUCCH 相关的 UE的上行发送功率的调整值和与 SRS相关的 UE的上行发送功率的调整值中的 至少一个,即公式 PSRS (i) = minjPeMAX' . . ,.、 中的
PsRS OFFSET + 101og10(MSRS) + Po PUSCH (j)+a(j)-PLc +f(i)
P 禾 p p 中的牵小一个. 中, 其中, i表示子帧, j表示小区内数据包类型, PeMAX表示最大允许功率, MPUSCH(i)为 PUSCH传输的带宽, P。— PUSeH(j)和 P。— PuecH(j)为基站为小区内的所有 UE半静态地设定的 标称功率, a(j)为路损补偿因子, PLe为目标路损, A^(i)为基于调制编码方式和数据类 型的功率偏移量, f(i)代表功率控制的闭环调整部分。 ησ3Ι为信道质量信息的比特数, ¾^为混合自动重传请求的比特数, nSR为调度请求比特数, h(neQI,nHARQ,nSR)为基于 PUCCH格式的值, F和 F'为 PUCCH格式, ^ ^(F)为 PUCCH格式 F相对于 PUCCH 格式 la的值, AT^(F ')为传输 PUCCH相关的值, g(i)为 PUCCH功率控制调整状态因 子, PSRS―。 ^ΕΤ表示 SRS发送功率的偏移量, MSRS表示 SRS的带宽。
202、 上述 UE根据上述指示信息和上述 UE的上行发送功率的调整值确定上述 UE 的上行发送功率。
可选地, UE可以通过多种方式接收基站发送的指示上述 UE的上行发送功率的调 整值的范围的指示信息。 例如: UE可以通过高层信令接收基站发送的上述指示信息, 用以指示上述 UE的上行发送功率的调整值的范围。再例如: UE还可以通过 PDCCH中 的一条新的普通信令接收基站发送的上述指示信息, 用以指示上述 UE的上行发送功率 的调整值的范围。
具体地, 上述 UE的上行发送功率的调整值可以通过 4个以上比特标识, 其中, 所 标识的 UE的上行发送功率的调整值的步长等于 ldB或大于 ldB。 例如: 可以通过 4个 比特标识, 步长为 ldB, 则可以标识的功率范围为 -8dB~7dB; 可以通过 4个比特标识, 步长为 2dB, 则可以标识的功率范围为 -23dB~7dB; 再例如: 还可以通过 5个比特标识, 步长为 ldB, 则可以标识的功率范围为 -24dB~7dB。
本实施例中, 通过 UE接收基站发送的用于指示上述 UE的上行发送功率的调整值 的范围的指示信息和上述 UE的上行发送功率的调整值, 使得 UE能够根据上述指示信 息和 UE的上行发送功率的调整值, 确定上述 UE的上行发送功率, 能够避免现有技术 中由于在 CoMP 系统中由于上行数据传输的数据接收点可能与下行数据传输的数据发 送点不一致而导致的 UE获得的路径损耗进行上行功率控制不够精确的问题, 从而提高 了上行数据发送的质量。
本发明的技术方案, 可以应用于各种通信系统, 例如: 全球移动通信系统 (Global System for Mobile Communications,简称 GSM)、通用分组无线业务(General Packet Radio Service, 简称 GPRS ) 系统、 码分多址 (Code Division Multiple Access, 简称 CDMA) 系统、 宽带码分多址 (Wideband Code Division Multiple Access, 简称 WCDMA) 系统、 时分同步码分多址 (Time Division-Synchronous Code Division Multiple Access, 简称 TD-SCDMA) 系统、 长期演进 (Long Term Evolution, 简称 LTE) 系统等。
其中,基站可以是 GSM系统、 GPRS系统或 CDMA系统中的基站(Base Transceiver Station, 简称 BTS), 也可以是 WCDMA系统中的基站 (NodeB ) , 还可以是 LTE系统 中的演进型基站 (Evolutional Node B, 简称 eNB或 eNodeB)。
需要说明的是: 对于前述的各方法实施例, 为了简单描述, 故将其都表述为一系列 的动作组合, 但是本领域技术人员应该知悉, 本发明并不受所描述的动作顺序的限制, 因为依据本发明, 某些步骤可以采用其他顺序或者同时进行。 其次, 本领域技术人员也 应该知悉, 说明书中所描述的实施例均属于优选实施例, 所涉及的动作和模块并不一定 是本发明所必须的。
在上述实施例中,对各个实施例的描述都各有侧重,某个实施例中没有详述的部分, 可以参见其他实施例的相关描述。
图 3为本发明另一实施例提供的基站的结构示意图, 如图 3所示, 本实施例的基站 可以包括确定单元 31和发送单元 32。其中, 确定单元 31用于确定 UE的上行发送功率 的调整值; 发送单元 32用于向上述 UE发送指示信息和确定单元 31确定的上述 UE的 上行发送功率的调整值, 上述指示信息用于指示确定单元 31确定的上述 UE的上行发 送功率的调整值的范围, 以使上述 UE根据上述指示信息以及上述 UE的上行发送功率 的调整值确定上述 UE的上行发送功率。
上述图 1对应的实施例中基站的功能可以由本实施例提供的基站实现。
具体地, 本实施例中的发送单元 32具体可以通过高层信令向上述 UE发送上述指 示信息; 或者还可以通过 PDCCH向上述 UE发送上述指示信息。 可选地, 本实施例中的确定单元 31确定的上述 UE的上行发送功率的调整值可以 通过 4个比特标识, 并且通过上述 4个比特标识上述 UE的上行发送功率的调整值的步 长大于或等于 ldB; 或者还可以通过大于 4个比特标识, 并且通过上述大于 4个比特标 识上述 UE的上行发送功率的调整值的步长大于或等于 ldB。
具体地, 如图 4所示, 本实施例中的确定单元可以包括下列子单元中的至少一项: 第一确定子单元 41、 第二确定子单元 42和第三确定子单元 43。 其中,
第一确定子单元 41, 用于确定用于 PUSCH的上行功率控制的 UE的上行发送功率 的调整值;
第二确定子单元 42, 用于确定用于 PUCCH的上行功率控制的 UE的上行发送功率 的调整值;
第三确定子单元 43, 用于确定用于 SRS的上行功率控制的 UE的上行发送功率的 调整值。
需要指出的是, 图 4中仅示出了同时包括第一确定子单元 41、 第二确定子单元 42 和第三确定子单元 43 的情况, 在可选的实施例中, 也可以仅包括上述三个子单元中的 一个或两个。
其中, 如图 5所示, 第三确定子单元 43可以包括下列模块中的至少一项: 第一确 定模块 51和第二确定模块 52。 其中,
第一确定模块 51,用于确定用于 SRS的上行功率控制的与 PUSCH相关的 UE的上 行发送功率的调整值;
第二确定模块 52, 用于确定用于 SRS的上行功率控制的与 SRS相关的 UE的上行 发送功率的调整值。
需要指出的是, 图 5中仅示出了同时包括第一确定模块 51和第二确定模块 52的情 况, 在可选的实施例中, 也可以仅包括上述两个模块中的一个。
本实施例中, 基站在确定单元确定 UE的上行发送功率的调整值之后, 通过发送单 元向 UE发送用于指示上述 UE的上行发送功率的调整值的范围的指示信息和上述 UE 的上行发送功率的调整值, 使得 UE能够根据上述指示信息和 UE的上行发送功率的调 整值, 确定上述 UE的上行发送功率, 能够避免现有技术中由于在 CoMP系统中由于上 行数据传输的数据接收点可能与下行数据传输的数据发送点不一致而导致的 UE获得的 路径损耗进行上行功率控制不够精确的问题, 从而提高了上行数据发送的质量。
关于该基站的其他的结构和功能的描述可以参见前述的方法实施例。 图 6为本发明另一实施例提供的 UE的结构示意图, 如图 6所示, 本实施例的 UE 可以包括接收单元 61和处理单元 62。其中,接收单元 61用于接收基站发送的指示信息 和上述 UE的上行发送功率的调整值, 上述指示信息用于指示上述 UE的上行发送功率 的调整值的范围; 处理单元 62用于根据接收单元 61接收的上述指示信息以及上述 UE 的上行功率的调整值确定上述 UE的上行发送功率。
上述图 2对应的实施例中 UE的功能可以由本实施例提供的 UE实现。
具体地, 本实施例中的接收单元 61 具体可以通过高层信令, 接收上述基站发送的 上述指示信息; 或者还可以通过 PDCCH, 接收上述基站发送的上述指示信息。
可选地, 本实施例中的接收单元 61接收的上述 UE的上行发送功率的调整值可以 通过 4个比特标识, 并且通过上述 4个比特标识上述 UE的上行发送功率的调整值的步 长大于或等于 ldB; 或者还可以通过大于 4个比特标识, 并且通过上述大于 4个比特标 识上述 UE的上行发送功率的调整值的步长大于或等于 ldB。
具体地, 如图 7所示, 本实施例中的接收单元 71可以包括下列子单元中的至少一 项: 第一接收子单元 71、 第二接收子单元 72和第三接收子单元 73。 其中,
第一接收子单元 71, 用于接收基站发送的用于 PUSCH的上行功率控制的上述 UE 的上行发送功率的调整值;
第二接收子单元 72, 用于接收基站发送的用于 PUCCH的上行功率控制的上述 UE 的上行发送功率的调整值;
第三接收子单元 73, 用于接收基站发送的用于 SRS的上行功率控制的上述 UE的 上行发送功率的调整值。
需要指出的是, 图 7中仅示出了同时包括第一接收子单元 71、 第二接收子单元 72 和第三接收子单元 73 的情况, 在可选的实施例中, 也可以仅包括上述三个子单元中的 一个或两个。
其中, 如图 8所示, 上述第三接收子单元 73可以包括下列模块中的至少一项: 第 —接收模块 81和第二接收模块 82。 其中,
第一接收模块 81,用于接收基站发送的用于 SRS的上行功率控制的与 PUSCH相关 的上述 UE的上行发送功率的调整值;
第二接收模块 82, 用于接收基站发送的用于 SRS的上行功率控制的与 SRS相关的 上述 UE的上行发送功率的调整值。
需要指出的是, 图 8中仅示出了同时包括第一接收模块 81和第二接收模块 82的情 况, 在可选的实施例中, 也可以仅包括上述两个模块中的一个。
本实施例中, UE通过接收单元接收基站发送的用于指示上述 UE的上行发送功率 的调整值的范围的指示信息和上述 UE的上行发送功率的调整值, 使得处理单元能够根 据上述指示信息和 UE的上行发送功率的调整值, 确定上述 UE的上行发送功率, 能够 避免现有技术中由于在 CoMP 系统中由于上行数据传输的数据接收点可能与下行数据 传输的数据发送点不一致而导致的 UE获得的路径损耗进行上行功率控制不够精确的问 题, 从而提高了上行数据发送的质量。
关于该基站的其他的结构和功能的描述可以参见前述的方法实施例。
所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁, 上述描述的系统, 装置和单元的具体工作过程, 可以参考前述方法实施例中的对应过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统, 装置和方法, 可以 通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示意性的, 例如, 所述单 元的划分, 仅仅为一种逻辑功能划分, 实际实现时可以有另外的划分方式, 例如多个单 元或组件可以结合或者可以集成到另一个系统, 或一些特征可以忽略, 或不执行。 另一 点, 所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口, 装置 或单元的间接耦合或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的, 作为单元显示 的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个 网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的 目的。
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元中, 也可以是 各个单元单独物理存在, 也可以两个或两个以上单元集成在一个单元中。 上述集成的单 元既可以采用硬件的形式实现, 也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元,可以存储在一个计算机可读取存储 介质中。 上述软件功能单元存储在一个存储介质中, 包括若干指令用以使得一台计算机 设备 (可以是个人计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述方法 的部分步骤。而前述的存储介质包括: U盘、移动硬盘、只读存储器(Read-Only Memory, 简称 ROM)、 随机存取存储器(Random Access Memory, 简称 RAM)、 磁碟或者光盘等 各种可以存储程序代码的介质。
最后应说明的是: 以上实施例仅用以说明本发明的技术方案, 而非对其限制; 尽管 参照前述实施例对本发明进行了详细的说明, 本领域的普通技术人员应当理解: 其依然 可以对前述各实施例所记载的技术方案进行修改, 或者对其中部分技术特征进行等同替 换; 而这些修改或者替换, 并不使相应技术方案的本质脱离本发明各实施例技术方案的 范围。

Claims

权利要求
1、 一种协作多点传输 CoMP系统中上行功率控制的补偿方法, 其特征在于, 包括: 基站确定用户设备 UE的上行发送功率的调整值;
所述基站向所述 UE发送指示信息以及所述 UE的上行发送功率的调整值, 所述指 示信息用于指示所述 UE的上行发送功率的调整值的范围, 以使所述 UE根据所述指示 信息以及所述 UE的上行发送功率的调整值确定所述 UE的上行发送功率。
2、 根据权利要求 1所述的方法, 其特征在于, 所述基站向所述 UE发送所述指示 信息, 包括:
所述基站通过高层信令向所述 UE发送所述指示信息; 或者
所述基站通过物理下行控制信道 PDCCH向所述 UE发送所述指示信息。
3、 根据权利要求 1或 2所述的方法, 其特征在于,
所述 UE的上行发送功率的调整值通过 4个比特标识, 并且通过所述 4个比特标识 所述 UE的上行发送功率的调整值的步长大于或等于 ldB; 或者
所述 UE的上行发送功率的调整值通过大于 4个比特标识, 并且通过所述大于 4个 比特标识所述 UE的上行发送功率的调整值的步长大于或等于 ldB。
4、 根据权利要求 1至 3任一权利要求所述的方法, 其特征在于, 所述基站确定 UE 的上行发送功率的调整值, 包括下列情况中的至少一项:
所述基站确定用于物理上行共享信道 PUSCH的上行功率控制的所述 UE的上行发 送功率的调整值;
所述基站确定用于物理上行控制信道 PUCCH的上行功率控制的所述 UE的上行发 送功率的调整值; 以及,
所述基站确定用于探测参考信号 SRS的上行功率控制的所述 UE的上行发送功率的 调整值。
5、 根据权利要求 4所述的方法, 其特征在于, 所述基站确定用于 SRS的上行功率 控制的所述 UE的上行发送功率的调整值, 包括下列情况中的至少一项:
所述基站确定用于 SRS的上行功率控制的与 PUSCH相关的所述 UE的上行发送功 率的调整值;
所述基站确定用于 SRS的上行功率控制的与 SRS相关的所述 UE的上行发送功率 的调整值。
6、 根据权利要求 1至 3任一权利要求所述的方法, 其特征在于, 所述基站确定 UE 的上行发送功率的调整值, 包括下列情况中的至少一项:
f Pc AX,
PpuscH(i) = min 中 的
101og10(M PUSCH PUSCH
八 /·、
公式 Ppuccai1) 中 的
Figure imgf000015_0001
p
O PUCCH '
/厶入、 式 中 的
Figure imgf000015_0002
P SRS— OFFSET禾 ^ p p 0— PUSCH \JJ中 1 的 » J =牵小一个 I - '
其中, i表示子帧, j表示小区内数据包类型, PeMAX表示最大允许功率, MPUSCH(i)为 PUSCH传输的带宽, a(j)为路损补偿因子, PLe为目标路损, A^(i)为基于调制编码方 式和数据类型的功率偏移量, f(i)代表功率控制的闭环调整部分。 为信道质量信息 的比特数, ¾^为混合自动重传请求的比特数, nSR为调度请求比特数, h(neQI,nHARQ,nSR) 为基于 PUCCH格式的值, F和 F'为 PUCCH格式, ^(F)为 PUCCH格式 F相对于 PUCCH格式 la的值, AT) F ';)为传输 PUCCH相关的值, g(i)为 PUCCH功率控制调整 状态因子, MSRS表示 SRS的带宽。
7、 一种协作多点传输 CoMP系统中上行功率控制的补偿方法, 其特征在于, 包括: 用户设备 UE接收基站发送的指示信息和所述 UE的上行发送功率的调整值, 所述 指示信息用于指示所述 UE的上行发送功率的调整值的范围;
所述 UE根据所述指示信息以及所述 UE的上行功率的调整值确定所述 UE的上行 发送功率。
8、 根据权利要求 7所述的方法, 其特征在于, 所述 UE接收基站发送的指示信息, 包括:
所述 UE通过高层信令, 接收所述基站发送的所述指示信息; 或者
所述 UE通过物理下行控制信道 PDCCH, 接收所述基站发送的所述指示信息。
9、 根据权利要求 7所述的方法, 其特征在于,
所述 UE的上行发送功率的调整值通过 4个比特标识, 并且通过所述 4个比特标识 所述 UE的上行发送功率的调整值的步长大于或等于 ldB; 或者
所述 UE的上行发送功率的调整值通过大于 4个比特标识, 并且通过所述大于 4个 比特标识所述 UE的上行发送功率的调整值的步长大于或等于 ldB
10、 根据权利要求 7至 9任一权利要求所述的方法, 其特征在于, 所述 UE接收基 站发送的所述 UE的上行发送功率的调整值, 包括下列情况中的至少一项:
所述 UE接收基站发送的用于物理上行共享信道 PUSCH的上行功率控制的所述 UE 的上行发送功率的调整值;
所述 UE接收基站发送的用于物理上行控制信道 PUCCH的上行功率控制的所述 UE 的上行发送功率的调整值;
所述 UE接收基站发送的用于探测参考信号 SRS的上行功率控制的所述 UE的上行 发送功率的调整值。
11、根据权利要求 10所述的方法, 其特征在于, 所述 UE接收基站发送的用于 SRS 的上行功率控制的所述 UE的上行发送功率的调整值, 包括下列情况中的至少一项: 所述 UE接收基站发送的用于 SRS的上行功率控制的与 PUSCH相关的所述 UE的 上行发送功率的调整值;
所述 UE接收基站发送的用于 SRS的上行功率控制的与 SRS相关的所述 UE的上行 发送功率的调整值。
12、 根据权利要求 7至 9任一权利要求所述的方法, 其特征在于, 所述 UE接收基 站发送的所述 UE的上行发送功率的调整值, 包括下列情况中的至少一项: f Pc AX,
PpuscH(i) = min 中 的
101og10(M PUSCH PUSCH P。 PUSCH O
p
公式 P r (i) = Irin 中 的
P PUCCH +PL +h(ncQI nHARQ nsR ) PUCCH
Figure imgf000016_0001
F ) + §(ί) p
O PUCCH ' 公 式 PSRS (i) = min PeMAX' . 中 的
PsRS OFFSET + 101og10(MSRS) + Po PUSCH (j)+a(j)-PLc +f(i)
Figure imgf000016_0002
P SRS— OFFSET禾 ^ p p O— PUSCH \JJ中 1 的 » J =牵小一个 I - '
其中, i表示子帧, j表示小区内数据包类型, PeMAX表示最大允许功率, MPUSCH(i)为 PUSCH传输的带宽, a(j)为路损补偿因子, PLe为目标路损, A^(i)为基于调制编码方 式和数据类型的功率偏移量, f(i)代表功率控制的闭环调整部分。 为信道质量信息 的比特数, ¾^为混合自动重传请求的比特数, nSR为调度请求比特数, h(neQI,nHARQ,nSR) 为基于 PUCCH格式的值, F和 F'为 PUCCH格式, ^(F)为 PUCCH格式 F相对于 PUCCH格式 la的值, AT)d3(F ')为传输 PUCCH相关的值, g(i)为 PUCCH功率控制调整 状态因子, MSRS表示 SRS的带宽。
13、 一种基站, 其特征在于, 包括:
确定单元, 用于确定用户设备 UE的上行发送功率的调整值;
发送单元, 用于向所述 UE发送指示信息和所述确定单元确定的所述 UE的上行发 送功率的调整值, 所述指示信息用于指示所述 UE的上行发送功率的调整值的范围, 以 使所述 UE根据所述指示信息以及所述 UE的上行发送功率的调整值确定所述 UE的上 行发送功率。
14、 根据权利要求 13所述的基站, 其特征在于,
所述发送单元具体用于通过高层信令向所述 UE发送所述指示信息; 或者 所述发送单元具体用于通过物理下行控制信道 PDCCH向所述 UE发送所述指示信 息。
15、 根据权利要求 13所述的基站, 其特征在于,
所述确定单元确定的所述 UE的上行发送功率的调整值通过 4个比特标识, 并且通 过所述 4个比特标识所述 UE的上行发送功率的调整值的步长大于或等于 ldB; 或者 所述确定单元确定的所述 UE的上行发送功率的调整值通过大于 4个比特标识, 并 且通过所述大于 4个比特标识所述 UE的上行发送功率的调整值的步长大于或等于 ldB。
16、 根据权利要求 13至 15任一权利要求所述的基站, 其特征在于, 所述确定单元 包括下列子单元中的至少一项:
第一确定子单元, 用于确定用于物理上行共享信道 PUSCH的上行功率控制的所述 UE的上行发送功率的调整值;
第二确定子单元, 用于确定用于物理上行控制信道 PUCCH的上行功率控制的所述 UE的上行发送功率的调整值;
第三确定子单元,用于确定用于探测参考信号 SRS的上行功率控制的所述 UE的上 行发送功率的调整值。
17、 根据权利要求 16所述的基站, 其特征在于, 所述第三确定子单元包括下列模 块中的至少一项:
第一确定模块, 用于确定用于 SRS的上行功率控制的与 PUSCH相关的所述 UE的 上行发送功率的调整值;
第二确定模块, 用于确定用于 SRS的上行功率控制的与 SRS相关的所述 UE的上 行发送功率的调整值。
18、 一种用户设备 UE, 其特征在于, 包括:
接收单元, 用于接收基站发送的指示信息和所述 UE的上行发送功率的调整值, 所 述指示信息用于指示所述 UE的上行发送功率的调整值的范围;
处理单元, 用于根据所述接收单元接收的所述指示信息以及所述 UE的上行功率的 调整值确定所述 UE的上行发送功率。
19、 根据权利要求 18所述的 UE, 其特征在于,
所述接收单元具体用于通过高层信令, 接收所述基站发送的所述指示信息; 或者 所述接收单元具体用于通过物理下行控制信道 PDCCH, 接收所述基站发送的所述 指示信息。
20、 根据权利要求 18所述的 UE, 其特征在于,
所述接收单元接收的所述 UE的上行发送功率的调整值通过 4个比特标识, 并且通 过所述 4个比特标识所述 UE的上行发送功率的调整值的步长大于或等于 ldB ; 或者 所述接收单元接收的所述 UE的上行发送功率的调整值通过大于 4个比特标识, 并 且通过所述大于 4个比特标识所述 UE的上行发送功率的调整值的步长大于或等于 ldB。
21、 根据权利要求 18至 20任一权利要求所述的 UE, 其特征在于, 所述接收单元 包括下列子单元中的至少一项:
第一接收子单元, 用于接收基站发送的用于物理上行共享信道 PUSCH的上行功率 控制的所述 UE的上行发送功率的调整值;
第二接收子单元, 用于接收基站发送的用于物理上行控制信道 PUCCH的上行功率 控制的所述 UE的上行发送功率的调整值;
第三接收子单元,用于接收基站发送的用于探测参考信号 SRS的上行功率控制的所 述 UE的上行发送功率的调整值。
22、 根据权利要求 21所述的 UE, 其特征在于, 所述第三接收子单元包括下列模块 中的至少一项: 第一接收模块,用于接收基站发送的用于 SRS的上行功率控制的与 PUSCH相关的 所述 UE的上行发送功率的调整值;
第二接收模块, 用于接收基站发送的用于 SRS的上行功率控制的与 SRS相关的所 述 UE的上行发送功率的调整值。
PCT/CN2012/080242 2011-08-16 2012-08-16 CoMP系统中上行功率控制的补偿方法及基站、用户设备 WO2013023612A1 (zh)

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