WO2013010311A1 - 功率补偿方法、基站和终端设备 - Google Patents

功率补偿方法、基站和终端设备 Download PDF

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Publication number
WO2013010311A1
WO2013010311A1 PCT/CN2011/077222 CN2011077222W WO2013010311A1 WO 2013010311 A1 WO2013010311 A1 WO 2013010311A1 CN 2011077222 W CN2011077222 W CN 2011077222W WO 2013010311 A1 WO2013010311 A1 WO 2013010311A1
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WO
WIPO (PCT)
Prior art keywords
downlink control
control channel
base station
reference signal
time slot
Prior art date
Application number
PCT/CN2011/077222
Other languages
English (en)
French (fr)
Inventor
王轶
张元涛
周华
Original Assignee
富士通株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士通株式会社 filed Critical 富士通株式会社
Priority to PCT/CN2011/077222 priority Critical patent/WO2013010311A1/zh
Priority to CN201180070887.6A priority patent/CN103548293A/zh
Publication of WO2013010311A1 publication Critical patent/WO2013010311A1/zh
Priority to US14/146,443 priority patent/US9591629B2/en

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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
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/143—Downlink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • 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
    • H04W52/06—TPC algorithms
    • H04W52/16—Deriving transmission power values from another channel
    • 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
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a power compensation method, a base station, and a terminal device. Background technique
  • downlink control information In a Long Term Evolution (LTE) system, downlink control information (DCI, Downlink Control Information) is transmitted by a base station in a physical downlink control channel (PDCCH), and the data is shared by a base station by a physical downlink (PDSCH, Physical Downlink Shared Channel).
  • the PDCCH supports spatial diversity multi-antenna transmission based on a cell-specific reference signal (CRS), and the maximum number of transmitting antennas is 4.
  • CRS cell-specific reference signal
  • the downlink can support up to eight transmit antennas.
  • the PDCCH can only support up to 4 antenna transmissions.
  • the multi-point coordinated transmission technology based on the network architecture of multiple geographically separated remote radio heads (RRH: Remote Radio Head) will be widely used in future wireless communication systems.
  • the PDCCH based on the demodulation reference signal (UE-specific DM-RS, Demodulation Reference Signal), and the PDCCH is multiplexed from the first N orthogonal frequency divisions (OFDM, Orthogonal). Fre-quency Division Multiplexing)
  • the symbol is extended to other areas, for example, to the PDSCH area starting from the N+1th symbol.
  • the same precoding matrix is used. If the ranks of the precoding matrices of the PDCCH and the PDSCH are different, the rank of the precoding matrix of the PDCCH is always lower than the precoding matrix of the PDSCH. Rank, such a difference in power allocated to the PDCCH and the PDSCH will result in a decrease in PDCCH performance, which requires an increase in the power of the PDCCH to compensate for performance degradation. Since the terminal device cannot know the change of the power, when the terminal device receives the data and the pilot transmitted by the base station via the wireless fading channel, the influence of the power of the channel-estimated data cannot be removed, so that the data cannot be correctly demodulated. Not yet There are ways to solve the above problems.
  • An object of the present invention is to provide a power compensation method, a base station, and a terminal device, by transmitting power compensation information to a terminal device, so that the terminal device decodes the PDCCH or PDSCH data sent by the received base station according to the compensation information. Power compensation is performed, or power compensation is performed on the received DM-RS channel estimation, which ensures the correctness of the channel estimation and the terminal device correctly demodulates the received data.
  • a power compensation method comprising: extending a user-specific downlink control channel region to a downlink shared channel region, where the extended user-specific downlink control channel region is configured in one or more resource blocks The first time slot of the pair;
  • the base station transmits the EPRE of the extended user-specific downlink control channel and the EPRE of the modulation reference signal of the first time slot occupied by the extended user-specific downlink control channel.
  • the first ratio is used to provide power compensation to the terminal when decoding the received downlink control channel data sent by the base station.
  • a power compensation method comprising: extending a user-specific downlink control channel region to a downlink shared channel region, and multiplexing the extended user-specific downlink control channel and the downlink shared channel region. Or a plurality of resource block pairs, and are respectively disposed in an area of the first time slot and the second time slot of the resource block pair;
  • the base station transmits the extended user-specific downlink control.
  • a power compensation method comprising: extending a user-specific downlink control channel region to a downlink shared channel region, where the extended user-specific downlink control channel region is configured in one or more resources The first time slot of the block pair; when the extended user-specific downlink control channel adopts the amplitude phase joint keying modulation mode, the base station transmits the extended user-specific downlink control channel EPRE and the extended user-specific downlink control channel. a third ratio of the EPRE of the modulation reference signal of the time slot, where the third ratio is used for providing power compensation to the terminal when decoding the received downlink control channel data sent by the base station;
  • the base station transmits the EPRE of the modulation reference signal of the first time slot occupied by the extended user-specific downlink control channel and the EPRE of the modulation reference signal of the second time slot.
  • the fourth ratio is used to provide the terminal with power compensation for the received modulation reference signal channel estimate.
  • a power compensation method includes: a user-specific downlink control channel region is extended to a downlink shared channel region, and an extended user-specific downlink control channel region is configured in one or more resource blocks. a region of the first slot of the pair; the downlink shared channel partial region or all regions are disposed in a region of the second slot of the one or more resource block pairs, or are disposed differently from the one or more resource block pairs The resource block is on; the base station configures the power compensation value;
  • the base station sends the power compensation value, where the power compensation value is used to provide power compensation to the terminal when decoding the received downlink control channel data or downlink shared channel data sent by the base station, or to receive the modulated reference signal channel. It is estimated that power compensation is performed.
  • a power compensation method comprising:
  • the terminal performs power compensation on the downlink control channel or downlink shared channel data received from the base station by using the fifth ratio, or the sixth ratio, or the power compensation value, or performs channel estimation on the received modulation reference signal. Power compensation.
  • a base station includes: a first resource configurator, configured to extend a user-specific downlink control channel region to a downlink shared channel region, and an extended user-specific downlink control channel region configuration In the first time slot of one or more resource block pairs;
  • a first determining unit configured to determine whether a modulation mode of the extended user-specific downlink control channel is an amplitude phase joint keying modulation mode
  • a first compensation information transmitter configured to: when the first user-determined downlink control channel of the first determining unit is an extended user-specific downlink control channel adopts an amplitude-phase joint keying modulation mode, send an EPRE and an extended extended user-specific downlink control channel to the terminal a first ratio of the EPRE of the modulation reference signal of the first time slot occupied by the user-specific downlink control channel, where the first ratio is used to provide power to the terminal when decoding the received downlink control channel data sent by the base station make up.
  • a base station includes: a second resource configurator, configured to extend a user-specific downlink control channel region to a downlink shared channel region, an extended user-specific downlink control channel region, and The downlink shared channel region is multiplexed with one or more resource block pairs, and is respectively disposed in an area of the first time slot and the second time slot of the resource block pair;
  • a second determining unit configured to determine whether the power of the modulation reference signal of the first time slot occupied by the extended user-specific downlink control channel is the same as the power of the modulation reference signal of the second time slot occupied by the downlink shared channel;
  • a second compensation information transmitter configured to determine, by the second determining unit, that the power of the modulation reference signal occupied by the first time slot occupied by the extended user-specific downlink control channel and the second time slot occupied by the downlink shared channel When the power of the modulation reference signal is different, transmitting, to the terminal, a second ratio of the EPRE of the modulation reference signal of the first time slot occupied by the extended user-specific downlink control channel to the EPRE of the modulation reference signal of the second time slot;
  • the second ratio is used to provide the terminal with power compensation for the received modulation reference signal channel estimate.
  • a base station configured to include: a third resource configurator, configured to extend a user-specific downlink control channel region to a downlink shared channel region, where the extended user-specific downlink control channel region is configured in an area of the first time slot of one or more resource block pairs;
  • a third determining unit configured to determine whether a modulation mode of the extended user-specific downlink control channel is an amplitude phase joint keying modulation mode
  • a third compensation information sending unit configured to send an EPRE and an extension of the extended user-specific downlink control channel to the terminal when the third user-determined unit uses the amplitude-phase joint keying modulation mode for the extended user-specific downlink control channel
  • the user-specific downlink control channel occupies a third ratio of the EPRE of the modulation reference signal of the first time slot, and the third ratio is used to provide power to the terminal when decoding the received downlink control channel data sent by the base station.
  • a fourth determining unit configured to determine whether the downlink shared channel is configured in an area of the second time slot of the one or more resource blocks or on a different resource block pair than the one or more resource block pairs, and Whether the power of the modulation reference signal of the first time slot occupied by the extended user-specific downlink control channel is the same as the power of the modulation reference signal of the second time slot occupied by the downlink shared channel; the fourth compensation information transmitting unit is configured to The determination result of the fourth determining unit is that the downlink shared channel is configured in the second time slot of the one or more resource blocks.
  • the extended user-specific transmission is sent to the terminal.
  • the fourth ratio is used to provide the terminal with power compensation for the received modulation reference signal channel estimate.
  • a base station includes: a fourth resource configurator, configured to extend a user-specific downlink control channel region to a downlink shared channel region, and an extended user-specific downlink control channel region configuration a first time slot of one or more resource block pairs; a partial area or all areas of the downlink shared channel are disposed in an area of the second time slot of the one or more resource block pairs, or are disposed in the one or more Resource blocks are paired with different resource blocks;
  • a compensation information configurator configured to configure a power compensation value, where the power compensation value is used to provide power compensation to the terminal when decoding the received data sent by the base station, or to receive Modulation reference signal channel estimation for power compensation;
  • a seventh compensation information transmitter configured to send the power compensation value to the terminal.
  • a terminal includes: a compensation information receiver, configured to receive an EPRE of an extended user-specific downlink control channel sent by a base station, and an extended user-specific downlink control channel.
  • the fifth ratio of the EPRE of the modulation reference signal of the first time slot; or the modulation reference of the EPRE and the second time slot of the modulation reference signal of the first time slot occupied by the extended user-specific downlink control channel transmitted by the base station a sixth ratio of the EPRE of the signal; or a power compensation value transmitted by the base station;
  • the power compensator is configured to perform power compensation on the downlink control channel or the downlink shared channel data that is sent by the received base station by using the received fifth ratio, or the sixth ratio, or the power compensation value, or The modulation reference signal channel estimate is power compensated.
  • a computer readable program wherein when the program is executed in a base station, the program causes a computer to execute the power compensation method in the base station.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform the power compensation method described above in a base station.
  • a computer readable program wherein when the program is executed in a terminal, the program causes the computer to execute the power compensation method described above in the terminal.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute the power compensation method in the terminal.
  • the beneficial effects of the embodiments of the present invention are: when the transmission area of the PDCCH is extended to the PDSCH area, when the extended user-specific downlink control channel adopts the amplitude phase joint keying modulation mode, the base station transmits the extended user-specific downlink control channel.
  • the EPRE and the extended user-specific downlink control channel occupy the first ratio of the EPRE of the modulation reference signal of the time slot; or the power and downlink sharing of the modulation reference signal of the first time slot occupied by the extended user-specific downlink control channel
  • the base station transmits the modulation reference signal of the first time slot occupied by the extended user-specific downlink control channel.
  • the second ratio of the EPRE of the modulation reference signal of the second slot occupied by the EPRE and the downlink shared channel so that the terminal performs power compensation on the received PDCCH or PDSCH data transmitted by the base station according to the ratio, or receives the data.
  • the DM-RS channel estimation performs power compensation, which ensures the correctness of the channel estimation and the terminal device correctly demodulates the received data.
  • 1A is a schematic diagram showing an area configuration of a PDCCH/PDSCH of an LTE system
  • FIG. 1B is a schematic diagram of an area configuration of a PDCCH/PDSCH in an LTE-A system according to an embodiment of the present disclosure
  • 2A is a schematic diagram of a RB pair in which a transmission area of a PDCCH and a PDSCH occupy the same in an embodiment of the present invention
  • 2B is a schematic diagram of a resource block pair (RBpair) occupying different PDCCH and PDSCH transmission areas in the embodiment of the present invention
  • FIG. 3 is a flowchart of a power compensation method according to Embodiment 1 of the present invention.
  • FIG. 5 is a flowchart of a power compensation method according to Embodiment 4 of the present invention.
  • FIG. 6 is a flowchart of a power compensation method according to Embodiment 5 of the present invention.
  • Figure 7 is a block diagram showing the structure of a base station according to Embodiment 6 of the present invention.
  • Figure 8 is a block diagram showing the structure of a base station according to Embodiment 7 of the present invention
  • 9 is a schematic diagram showing the structure of a base station according to Embodiment 8 of the present invention.
  • Figure 10 is a block diagram showing the structure of a base station according to Embodiment 9 of the present invention.
  • Figure 11 is a schematic diagram of a mobile phone used as an example of a terminal device
  • Figure 12 is a block diagram showing the structure of a terminal device according to Embodiment 10 of the present invention.
  • Figure 13 is a block diagram showing the configuration of a power compensator 1202 in Embodiment 10 of the present invention
  • Figure 14 is a block diagram showing the configuration of a power compensator 1202 in Embodiment 10 of the present invention. . detailed description
  • FIG. 1A is a schematic diagram of a PDCCH/PDSCH region in an LTE system.
  • the 1st to Nth OFDM symbols are possible transmission areas of the PDCCH.
  • N 3.
  • the transmission area of the PDSCH is started from the N+1th OFDM symbol.
  • Table 1 is the number of OFDM symbols used by the PDCCH.
  • the transmission region of the PDCCH is extended from the first N OFDM symbols to the PDSCH region starting from the N+1th symbol.
  • FIG. 1B is a schematic diagram of a PDCCH/PDSCH transmission area according to an embodiment of the present invention.
  • the transmission area of the UE-specific PDCCH is extended from the first N OFDM symbols of Rel-8 to the transmission area of the PDSCH, and the PDCCH extended to the transmission area of the PDSCH is called an extended PDCCH area.
  • the transmission area of the PDCCH is extended from the original N OFDM symbols to the first 7 OFDM symbols, but this is an embodiment of the present invention, and may be extended to the transmission area of the PDSCH according to actual needs.
  • Table 1 is an embodiment of the present invention, and may be extended to the transmission area of the PDSCH according to actual needs.
  • the extended PDCCH transmission area and the PDSCH transmission area may be multiplexed with one or more resource block pairs (RB pairs), and respectively configured in the first time slot of the one or more resource block pairs. (Slot) and the area of the second time slot.
  • the extended PDCCH and the PDSCH transmission area may be respectively configured on different resource block pairs. For example, all the PDSCH transmission areas are configured on a different resource block pair than the PDCCH transmission area, or a part of the PDSCH.
  • the transmission area is configured on a resource block different from the resource block pair in which the PDCCH transmission area is located, and the other part of the transmission area is placed on the same resource block pair as the PDCCH transmission area.
  • 2A is a schematic diagram of an RB pair in which the extended PDCCH and PDSCH transmission areas occupy the same resource block pair (RB pair) in the embodiment of the present invention.
  • the transmission area of the extended PDCCH occupies the #M resource block and the first time slot of the resource block pair
  • the PDSCH transmission area occupies the #M resource block and the second time slot.
  • FIG. 2B is a schematic diagram of different RB pairs occupied by the extended PDCCH and PDSCH transmission areas in the embodiment of the present invention.
  • the transmission area of the extended PDCCH occupies the #M resource block and the first time slot
  • the transmission area of the PDSCH occupies the #M+1.
  • FIG. 2A and FIG. 2B only show specific examples in which the extended PDCCH and the PDSCH transmission area occupy one same and different RB pair, but are not limited to the above example, and may also be a case of occupying multiple resource block pairs, which is simple.
  • the embodiment of the present invention will be described below, and the following description will be made by taking FIG. 2A and FIG. 2B as an example.
  • the base station side needs to provide related power compensation information to the terminal.
  • Fig. 3 is a flow chart showing the power compensation method of the first embodiment of the present invention.
  • the method includes: when an extended user-specific downlink control channel (UE-specific PDCCH) adopts an amplitude-phase phase keying (APK) modulation mode, the base station sends an extended user-specific downlink control channel.
  • UE-specific PDCCH extended user-specific downlink control channel
  • APK amplitude-phase phase keying
  • DM-RS modulation reference signal
  • the foregoing embodiment is applicable to the case where the PDCCH and the scheduled PDSCH occupy one resource block pair, and is also applicable to the case of occupying different resource block pairs. For example, it applies to both the case of Figs. 2A and 2B.
  • the foregoing embodiment is also applicable to a case where a part of the transmission area of the PDSCH and the transmission area of the PDCCH occupy one or more identical resource block pairs; and another part of the transmission area occupies a different resource block pair.
  • EPRE Errgy Per Resource Element
  • ⁇ DM - RS indicates the EPREo of the DM-RS of the 1st time slot occupied by the extended user-specific PDCCH
  • the first ratio may be sent by higher layer signaling, such as Radio Resource Control (RRC) signaling.
  • RRC Radio Resource Control
  • the base station may also end the information of the modulation mode adopted in the extended PDCCH.
  • the terminal sends (see step 302), where the information of the modulation mode can be included in the higher layer signaling and sent at the same time as the first ratio ⁇ .
  • step 302 above is an optional step.
  • the base station further sends a PDCCH data signal and a DM-RS pilot signal to the terminal device, so that the terminal device performs power compensation when decoding the received data by using the first ratio, thereby ensuring the terminal.
  • the device correctly demodulates the received data.
  • the base station needs to send the EPRE of the extended user-specific downlink control channel and the EPRE of the modulation reference signal occupied by the user-dedicated PDCCH to the terminal device.
  • the ratio is such that the terminal device performs power compensation on the received PDCCH decoding of the base station according to the first ratio, thereby ensuring that the terminal device correctly demodulates the received data.
  • the embodiment of the present invention further provides a power compensation method, where the method includes: a power of a modulation reference signal (DM-RS) of a first time slot occupied by an extended user-dedicated PDCCH and a second time slot occupied by a PDSCH
  • DM-RS modulation reference signal
  • the base station transmits the EPRE of the first slot of the modulated dedicated user-dedicated PDCCH and the modulation reference signal of the second slot (DM) -RS) the second ratio of the EPRE;
  • the second ratio is used to provide the terminal with power compensation for the received DM-RS channel estimate.
  • the foregoing embodiment is applicable to a case where the PDCCH and the scheduled PDSCH occupy the same resource group or multiple resource block pairs.
  • the foregoing embodiment can be used in the case of Fig. 2A.
  • EPRE Errgy Per Resource Element
  • the second ratio can be expressed, for example, as a formula: Where A (H ⁇ > indicates that the EPREo ⁇ H ⁇ of the DM-RS of the first slot occupied by the extended user-dedicated PDCCH indicates that the extended user-specific PDCCH is in the second of the same resource block pair (RB pair) The EPRE of the DM-RS of the region of the gap.
  • the base station further sends a PDSCH data signal and a pilot signal to the terminal device, so that the terminal device uses the second ratio to estimate the received DM-RS channel. Power compensation is performed to ensure the correctness of the channel estimation of the terminal equipment.
  • the base station transmits the extension to the terminal device.
  • a second ratio of the EPRE of the DM-RS of the first time slot occupied by the user-specific PDCCH to the EPRE of the DM-RS of the second time slot so that the terminal device pairs the received DM-RS channel according to the second ratio
  • the power compensation is performed at the time of estimation to ensure the correctness of the channel estimation of the terminal device.
  • the power of the DM-RS in the first slot occupied by the APK modulation scheme and the extended user-dedicated PDCCH and the second time occupied by the PDSCH are respectively applied to the extended user-dedicated PDCCH.
  • the power compensation methods for the case where the power of the DM-RSs of the slots are different are separately described. In the present embodiment, an example in which the above methods are used in combination will be described.
  • Fig. 4 is a flow chart showing the power compensation method of the third embodiment of the present invention. As shown in Figure 4, the method includes:
  • Step 401 performing resource configuration
  • the PDCCH transmission area is extended to the PDSCH area.
  • the extended PDCCH and the PDSCH transmission area may occupy the same resource block pair (RB pair, Resource Block pair). It can also occupy different resource block pairs.
  • the second time slot of the resource block pair occupied by the PDCCH does not transmit the PDSCH.
  • Step 402 Determine whether the modulation mode adopted by the extended user-specific PDCCH is the APK modulation mode. If the determination result is yes, execute step 403; otherwise, execute step 404.
  • Step 403 The base station sends a third ratio of the EPRE of the extended user-specific PDCCH and the EPRE of the modulation reference signal (DM-RS) of the first slot occupied by the user-specific PDCCH, where the third ratio is used to provide The terminal performs power compensation on the received PDCCH decoding sent by the base station;
  • DM-RS modulation reference signal
  • the base station may send the third ratio to the terminal side by using the high layer signaling, and may simultaneously send the modulation mode in the high layer signaling while transmitting the third ratio.
  • Step 404 further determining whether the extended PDCCH and the PDSCH occupy the same resource Source block pair
  • step 405 is performed; if the situation of occupying different resource block pairs corresponding to FIG. 2B is configured, the process ends. .
  • Step 405 The power of the modulation reference signal (DM-RS) of the first time slot occupied by the extended user-specific PDCCH and the power of the modulation reference signal (DM-RS) of the second time slot occupied by the PDSCH are further determined. If they are the same, if the result of the determination is different, then step 406 is performed, otherwise the process ends.
  • DM-RS modulation reference signal
  • Step 406 The base station sends an EPRE of a modulation reference signal (DM-RS) of the first slot occupied by the extended user-specific PDCCH and a modulation reference signal (DM-RS) of the second slot in the same resource block pair.
  • DM-RS modulation reference signal
  • the fourth ratio is used to provide the terminal with power compensation for the received DM-RS channel estimation sent by the base station.
  • the modulation mode adopted by the extended PDCCH is determined, and then the power of the DM-RS of the first slot occupied by the extended user-specific PDCCH and the DM of the second slot occupied by the PDSCH are determined.
  • the power of the RS is the same, but the above is only the embodiment of the present invention, and is not limited to the above-mentioned judgment order.
  • steps 404 and 405 may be performed first, and then step 402 is performed.
  • the purpose is that the base station sends the third and fourth ratios to the terminal, so that the terminal performs power compensation on the received PDCCH data and the PDSCH data by using the third and fourth ratios, or
  • the received DM-RS channel estimation performs power compensation to ensure correctness of channel estimation of the terminal device and correct demodulation of the received data by the terminal device.
  • Fig. 5 is a flow chart showing the power compensation method of the fourth embodiment of the present invention. As shown in Figure 5, the method includes:
  • Step 501 The base station configures a power compensation value, where the power compensation value is used to provide power to the terminal for decoding the received PDCCH data or PDSCH transmitted by the base station, or to perform power estimation on the received DM-RS channel. make up;
  • the power compensation value may be expressed as ⁇ , and the power compensation value ⁇ may be based on channel state, interference of a small interval, PDCCH and PDSCH ranks of the same resource block pair. The difference is determined by factors such as.
  • M represents the rank of the precoding matrix corresponding to the PDSCH
  • N represents the rank of the precoding matrix corresponding to the PDCCH.
  • Step 502 The base station sends the power compensation value to the terminal.
  • the base station may send the power compensation value to the terminal by using high layer signaling.
  • the above embodiment is applicable to any case where the PDCCH region is extended to the PDSCH region, as is applicable to the case of Figs. 2A and 2B.
  • the base station can configure the power compensation value according to the actual situation, so that the terminal device performs power compensation on the received PDCCH or PDSCH data transmitted by the base station according to the power compensation value, or performs the power compensation on the received DM.
  • the RS channel is estimated to perform power compensation, which ensures the correctness of the channel estimation and the terminal device correctly demodulates the received data, and the method is simple to implement.
  • the transmission area configuration of the first embodiment to the fourth embodiment is described with reference to the case of FIG. 2A and FIG. 2B, but is also applicable to a part of the transmission area of the PDSCH and the transmission area of the extended PDCCH occupying one or more identical resource blocks.
  • the power compensation principle is similar, and will not be described here.
  • the base station may send the foregoing first to fourth ratios or power compensation values to the terminal by using high layer signaling, but is not limited thereto.
  • the base station further sends a data signal and a pilot signal (DM-RS signal) to the terminal device, so that the terminal device performs power compensation when decoding the received data by using the ratio or power compensation value, or receives the received data.
  • DM-RS signal a data signal and a pilot signal
  • the DM-RS channel estimation performs power compensation, which ensures the correctness of the channel estimation and the terminal device correctly demodulates the received data.
  • Fig. 6 is a diagram showing a power compensation method according to a fifth embodiment of the present invention.
  • the method includes: Step 601: A terminal receives a fifth ratio of an EPRE of an extended user-specific PDCCH sent by a base station to an EPRE of a DM-RS of a first slot occupied by a user-specific PDCCH; or receives a sixth ratio of the EPRE of the DM-RS of the first time slot occupied by the extended user-specific PDCCH transmitted by the base station to the EPRE of the DM-RS of the second time slot; or receiving a power compensation value transmitted by the base station; Step 602, The terminal uses the received fifth ratio, or the sixth ratio, or the power compensation value to decode the downlink control channel or the downlink shared channel data received from the base station. Line power compensation, or power compensation of the received modulation reference signal channel estimate.
  • the fifth ratio corresponds to the first ratio or the third ratio in Embodiment 1 or 3
  • the sixth ratio corresponds to the second ratio or
  • the base station further sends a PDCCH or PDSCH data signal and a DM-RS signal (pilot signal) to the terminal device, and the terminal receives the data signal and the pilot signal.
  • a PDCCH or PDSCH data signal and a DM-RS signal pilot signal
  • the terminal receives the pilot signal and the data signal sent by the base station, performs channel estimation based on the pilot signal, performs data detection on the data signal based on the channel estimation result, and uses the fifth ratio, or the sixth ratio, or The power compensation value performs power compensation on the detected data.
  • the base station sends the data signal d and the pilot signal P. After the wireless fading channel, the signal received by the terminal device is:
  • the data signal received by the terminal device is a modulation symbol with a variance of 1, and A is the power of the data transmitted by the base station, which is a wireless fading channel, "is noise. ⁇ is the pilot signal received by the terminal device, and the variance is The pilot symbol of 1 is the power of the pilot transmitted by the base station.
  • the terminal device obtains an estimated value of the wireless fading channel by using channel estimation.
  • the terminal device can detect the The data is power compensated to ensure proper demodulation of the data.
  • the following is a detailed description of a method for the terminal device to perform power compensation on the received DM-RS channel estimation by using the above ratio or power compensation value by way of example.
  • the base station transmits the data signal d and the pilot signal p (ie, the DM-RS signal) through the wireless After fading the channel, the signal received by the terminal device is:
  • the data signal received by the terminal device is a modulation symbol with a variance of 1, and A is the power of the data transmitted by the base station, which is a wireless fading channel, "is noise.
  • ⁇ is the guide of the first time slot received by the terminal device.
  • the frequency signal, _y 3 is the pilot signal of the second time slot received by the terminal device; is a pilot symbol with a variance of 1, ⁇ is the power of the first time slot pilot transmitted by the base station, and A is the base station transmitting the second.
  • the power of the time slot pilots is a modulation symbol with a variance of 1
  • A is the power of the data transmitted by the base station, which is a wireless fading channel, "is noise.
  • ⁇ is the guide of the first time slot received by the terminal device.
  • the frequency signal, _y 3 is the pilot signal of the second time slot received by the terminal device; is a pilot symbol with a variance of 1
  • ⁇ is the power of the first time slot pilot transmitted by the base station
  • A
  • the value of the first slot pilot and the second slot pilot that is, the EPRE ratio
  • the EPRE ratio may be the second or fourth ratio or the base station.
  • the configured power compensation value so that the terminal device can use the above ratio to perform power compensation on the DM-RS channel estimation to ensure correct data demodulation.
  • the terminal device can utilize the extended user-specific transmission sent by the base station.
  • the fifth ratio of the EPRE of the PDCCH to the EPRE of the DM-RS of the first slot occupied by the user-dedicated PDCCH; or the EPRE of the DM-RS of the first slot occupied by the extended user-dedicated PDCCH transmitted by the base station The sixth ratio of the EPRE of the 2-slot DM-RS; or the power compensation value transmitted by the receiving base station, performing power compensation on decoding the received data or performing power compensation on the received DM-RS channel estimation to ensure Correct channel estimation and correct demodulation of received data.
  • the embodiment of the invention further provides a base station and a terminal device, as described in Embodiment 6 to Embodiment 10 below. Since the principle of solving the problem by the base station and the terminal device is similar to the power compensation method based on the base station and the terminal device, the implementation of the base station and the terminal device can be implemented. See the implementation of the method, and the repetition will not be repeated.
  • Figure 7 is a block diagram showing the structure of a base station according to a sixth embodiment of the present invention.
  • the base station includes a first resource configurator 701, a first determining unit 702, and a first compensation information transmitter 703;
  • a first resource configurator 701 configured to extend a user-specific downlink control channel region to a downlink shared channel region, where the extended user-specific downlink control channel region is configured in a first time slot of one or more resource block pairs;
  • the first determining unit 702 is configured to determine whether the modulation mode of the extended user-specific downlink control channel is an amplitude phase joint keying modulation mode
  • the first compensation information transmitter 703 is configured to: when the extended user-specific downlink control channel adopts the amplitude phase joint keying modulation mode, send the extended user-specific downlink control channel EPRE and the extended user-specific downlink control channel to the terminal.
  • the first ratio of the EPRE of the modulation reference signal of the first time slot, the first ratio is used for providing power compensation when the terminal decodes the PDCCH data transmitted by the received base station.
  • the base station may further include a modulation information transmitting unit (not shown) for transmitting information including a modulation mode to the terminal.
  • a modulation information transmitting unit (not shown) for transmitting information including a modulation mode to the terminal.
  • the first compensation information transmitter 703 can send the first ratio to the terminal device by using the high layer signaling, and can transmit the modulation mode to the high layer signaling, so that the modulation information sending unit is specifically compensated by the first compensation.
  • the information transmitter 703 performs.
  • a partial area or all areas of the PDSCH are arranged in an area of the second time slot of one or more resource block pairs; or the PDSCH area is not disposed on the one or more resource block pairs.
  • FIG. 8 is a block diagram showing the structure of a base station according to a seventh embodiment of the present invention.
  • the base station includes a second resource configurator 801, a second determining unit 802, and a second compensation information transmitter 803;
  • the second resource configurator 801 is configured to extend the user-specific downlink control channel region to the downlink shared channel region, and the extended user-specific downlink control channel and the downlink shared channel multiplex one or more resource block pairs, and are respectively configured on the resource.
  • the second determining unit 802 is configured to determine whether the power of the modulation reference signal of the first time slot occupied by the extended user-specific downlink control channel is the same as the power of the modulation reference signal of the second time slot occupied by the downlink shared channel;
  • the second compensation information transmitter 803 is configured to determine, by the second determining unit 802, that the power of the modulation reference signal occupied by the first time slot occupied by the extended user-specific downlink control channel is the same as that of the extended downlink shared channel.
  • the second ratio of the EPRE of the modulation reference signal of the first time slot occupied by the extended user-specific downlink control channel to the EPRE of the modulation reference signal of the second time slot is transmitted to the terminal. ;
  • the second ratio is used to provide the terminal with power compensation for the received modulation reference signal channel estimate transmitted by the base station.
  • Embodiment 7 can be combined with the base station of Embodiment 6 to implement power compensation.
  • Figure 9 is a block diagram showing the structure of a base station according to Embodiment 8 of the present invention.
  • the base station may include:
  • a third resource configurator 901 configured to extend a user-specific downlink control channel region to a downlink shared channel region, where the extended user-specific downlink control channel region is configured in an area of the first time slot of one or more resource block pairs;
  • the third determining unit 902 is configured to determine whether the modulation mode of the extended user-specific downlink control channel is an amplitude phase joint keying modulation mode
  • the third compensation information transmitting unit 903 is configured to: when the third user determining unit 902 determines that the extended user-specific downlink control channel is in the amplitude phase joint keying modulation mode, send the extended user-specific downlink control channel EPRE to the terminal. a third ratio of the EPRE of the modulation reference signal of the first time slot occupied by the extended user-specific downlink control channel, where the third ratio is used for providing the terminal to decode the received downlink control channel data sent by the base station Perform power compensation;
  • the fourth determining unit 904 is configured to determine whether the downlink shared channel region is configured in a region of the second slot of the one or more resource blocks or a resource block pair different from the one or more resource block pairs, and The power of the modulation reference signal of the first time slot occupied by the extended user-specific downlink control channel and the power of the modulation reference signal of the second time slot occupied by the downlink shared channel are Noun the same;
  • the fourth compensation information transmitting unit 905 is configured to configure, in the fourth determining unit 904, that the downlink shared channel region is in a region of the second time slot of the one or more resource blocks, and the extended user-specific downlink control is performed.
  • the power of the modulation reference signal of the first slot occupied by the channel is different from the power of the modulation reference signal of the second slot occupied by the downlink shared channel, the first time occupied by the extended user-specific downlink control channel is transmitted to the terminal.
  • the fourth ratio is used to provide the terminal with power compensation for the received modulation reference signal channel estimate transmitted by the base station.
  • the base station shown in FIG. 9 is only an embodiment of the present invention, and the connection relationship of each component of the base station can be adjusted according to the actual execution order.
  • FIG. 10 is a block diagram showing the structure of a base station according to a ninth embodiment of the present invention.
  • the base station includes a fourth resource configurator 1001, a compensation information configurator 1002, and a fifth compensation information transmitter 1003.
  • a fourth resource configurator 1001 configured to extend a user-specific downlink control channel region to a downlink shared channel region, where the extended user-specific downlink control channel region is configured in a first time slot of one or more resource block pairs; the downlink shared channel a partial area or an entire area is disposed in an area of the second time slot of the one or more resource block pairs, or is disposed on a different resource block pair than the one or more resource block pairs;
  • the compensation information configurator 1002 is configured to configure a power compensation value, where the power compensation value is used to provide power compensation to the terminal when decoding the data sent by the received base station, or to perform power compensation on the received DM-RS channel estimation.
  • the fifth compensation information transmitter 1003 is configured to send a power compensation value to the terminal.
  • the base station may each include a transmitter (not shown) for transmitting data signals and pilot signals to the terminal device.
  • the base station transmits, to the terminal device, the ratio of the EPRE of the extended user-specific downlink control channel to the EPRE of the DM-RS of the first time slot occupied by the extended user-specific PDCCH, or the extended user-dedicated PDCCH.
  • the ratio of the EPRE of the DM-RS of the first time slot to the EPRE of the DM-RS of the second time slot; or the power compensation value for the terminal device to utilize The above ratio or power compensation value performs power compensation on the received data decoding or power compensation on the received DM-RS channel estimation to ensure the correctness of the channel estimation and correct demodulation of the received data.
  • Fig. 11 is a schematic diagram of a mobile phone used as an example of a terminal device.
  • the example of the terminal device is not limited to a mobile phone, and may be any device having communication capabilities such as a game machine, a PDA, a portable computer, or the like.
  • the mobile telephone 100 can be a flip type telephone having a flip cover 1101 that is movable between an open position and a closed position. In Fig. 11, the flip cover 1101 is shown in an open position. It should be understood that the mobile telephone 100 can be of other constructions, such as a "longboard phone" or "slide phone.”
  • the mobile telephone 100 can include a display 1102 that displays information such as operational status, time, telephone number, phone book information, various menus, etc. to the user, such that the user can utilize various features of the mobile telephone 100.
  • Display 1102 can also be used to visually display content retrieved by mobile phone 100 and/or retrieved from a memory (not shown) of mobile phone 100.
  • Display 1102 can be used to present images, videos, and other graphics to the user, such as photos, mobile television content, and video related to the game.
  • keyboard 1103 provides a variety of user input operations.
  • keyboard 1103 can include alphanumeric keys that allow alphanumeric information (such as phone numbers, phone lists, phone book information, notepads, text, etc.) to be entered.
  • keyboard 1003 can include specific function keys 1104, such as a "call to send" button for initiating or answering a call, and a "call end” button for ending or “hanging up” the call.
  • the particular function keys can also include menu navigation keys and selection keys that are conveniently navigated through menus displayed on display 1102.
  • pointing devices and/or navigation keys can be provided to receive directional inputs from the user.
  • the display 1102 and the keyboard 1103 can be used in combination with each other to implement the functions of the soft keys.
  • antennas, microcontrollers, speakers 1105, and microphones 1106 that are necessary to perform their functions.
  • FIG. 12 is a block diagram showing the structure of a terminal device according to Embodiment 10 of the present invention.
  • a user equipment 100 includes a compensation information receiver 1201 and a power compensator 1202.
  • the compensation information receiver 1201 is configured to receive a first ratio of an EPRE of the extended user-specific downlink control channel sent by the base station and an EPRE of the modulation reference signal of the area allocated in the first slot; or the terminal device receives the configuration sent by the base station a second ratio of an EPRE of a modulation reference signal in a region of the first slot to an EPRE of a modulation reference signal in a region of the second slot; or a power compensation value transmitted by the base station;
  • the power compensator 1202 is configured to perform power compensation when decoding the received PDCCH or PDSCH data by using the first ratio, or the second ratio, or the power compensation value, or perform power compensation on the received DM-RS channel estimation.
  • the terminal may further include an information receiver 1203 for receiving a pilot signal and a data signal transmitted by the base station.
  • FIG. 13 is a schematic diagram showing the configuration of the power compensator 1202 in the embodiment 12 of the present invention. As shown in Figure 13, power compensator 1202 includes:
  • a channel estimator 1301, configured to perform channel estimation on the wireless fading channel
  • the data detector 1302 is configured to perform data detection on the data signal based on the channel estimation result.
  • the first compensator 1303 is configured to perform power compensation on the data detected by the data detector by using the first ratio or the power compensation value.
  • the power compensation for decoding the PDCCH or the PDSCH data is similar to that of the embodiment 5, and details are not described herein again.
  • FIG. 14 is a view showing the configuration of the power compensator 1202 in the embodiment 12 of the present invention.
  • power compensator 1202 includes:
  • a channel estimator 1401, configured to perform channel estimation on the wireless fading channel
  • the second compensator 1402 is configured to perform power compensation on the channel estimation result by using the second ratio or the power compensation value.
  • the terminal device can perform power decoding on the received data by using the first ratio, or the second ratio, or the power compensation value of the extended user-specific PDCCH of the region of the first slot. Compensation to ensure proper demodulation of the received data.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a base station, the program causes the computer to perform the power compensation described in Embodiments 1-4 in the base station Method.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform the power compensation method of Embodiment 1-4 in a base station.
  • a computer readable program wherein when the program is executed in a terminal, the program causes the computer to execute the power compensation method described in Embodiment 5 above in the terminal.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute the power compensation method described in Embodiment 5 above in a source base station.
  • the above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or a step.
  • Logic components such as field programmable logic components, microprocessors, processors used in computers, and the like.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.

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Abstract

本发明公开了一种功率补偿方法、基站和用户设备，该方法包括：在扩展的用户专用下行控制信道（PDCCH）采用振幅相位联合键控（APK）调制方式时，基站发送扩展的用户专用PDCCH的每个资源元素的发送能量（EPRE）与扩展的用户专用PDCCH所占的第1时隙的调制参考信号的EPRE的第一比值（301），使得该终端设备根据该第一比值对接收到的该基站发送的数据译码时进行功率补偿，保证了终端设备对接收到的数据进行正确解调。

Description

功率补偿方法、 基站和终端设备 技术领域
本发明涉及无线通信领域 ， 特别涉及一种功率补偿方法、 基站和终 端设备。 背景技术
在长期演进（LTE， Long Term Evolution)系统中，下行控制信息（DCI, Downlink Control Information) 由基站以物理下行控制信道 （PDCCH, Physical Downlink Control Channel) 形式发送， 数据由基站以物理下行共 享信道 （PDSCH, Physical Downlink Shared Channel) 形式发送。 其中， PDCCH支持基于小区参考符号（CRS， Cell-specific Reference Signal) 的 空间分集多天线发送， 最大发送天线数为 4。
为了提高数据传输速率和频谱效率， 多天线在无线通信系统中得到 广泛应用。 在增强的长期演进 （LTE-A, Long Term Evolution Advanced) 系统中， 下行链路可支持多达 8根发送天线。 但 PDCCH仅可支持最多 4 根天线发送。 为进一歩提高小区边缘用户的性能， 基于多个地理位置上 分开的远端无线头 （RRH: Remote Radio Head) 的网络架构的多点协作 传输技术将在未来无线通信系统中广泛应用。 但是由于目前解调 CRS的 能力受到限制， 因此， 开始关注基于解调参考信号（UE-specific DM-RS， Demodulation Reference Signal)的 PDCCH, 将 PDCCH从前 N个正交频 分复用 (OFDM, Orthogonal Fre-quency Division Multiplexing) 符号扩展 到其他区域， 例如， 扩展到第 N+1个符号开始的 PDSCH区域。
在这种情况下， 为便于 PDSCH的解调采用同样的预编码矩阵，如果 PDCCH和 PDSCH的预编码矩阵的秩不同， 则由于 PDCCH的预编码矩 阵的秩总是低于 PDSCH 的预编码矩阵的秩， 这样分配到 PDCCH 和 PDSCH的功率的不同将导致 PDCCH性能的降低，这样需要增加 PDCCH 的功率以补偿性能下降。 由于终端设备无法获知上述功率的变化， 因此， 当终端设备经无线衰落信道接收基站发送的数据和导频时， 无法对信道 估计后的数据去掉功率的影响， 以至于不能正确解调该数据。 目前还没 有解决上述问题的办法。
应该注意， 上面对技术背景的介绍只是为了方便对本发明的技术方 案进行清楚、 完整的说明， 并方便本领域技术人员的理解而阐述的。 不 能仅仅因为这些方案在本发明的背景技术部分进行了阐述而认为上述技 术方案为本领域技术人员所公知。
发明内容
本发明实施例的目的在于提供一种功率补偿方法、基站和终端设备， 通过将功率补偿信息发送给终端设备， 使得终端设备根据该补偿信息对 接收到的基站发送的 PDCCH或 PDSCH数据译码时进行功率补偿， 或者 对接收到的 DM-RS信道估计进行功率补偿，保证了信道估计的正确性及 终端设备对接收到的数据进行正确解调。
根据本发明实施例的一个方面提供了一种功率补偿方法， 该方法包 括： 将用户专用下行控制信道区域扩展到下行共享信道区域， 扩展的用 户专用下行控制信道区域配置于一个或多个资源块对的第 1时隙；
在扩展的用户专用下行控制信道采用振幅相位联合键控调制方式 时， 基站发送扩展的用户专用下行控制信道的 EPRE与扩展的用户专用下 行控制信道所占的第 1时隙的调制参考信号的 EPRE的第一比值；
该第一比值用于提供给终端对接收到的该基站发送的下行控制信道 数据译码时进行功率补偿。
根据本发明实施例的另一个方面提供了一种功率补偿方法， 该方法 包括： 将用户专用下行控制信道区域扩展到下行共享信道区域， 扩展的 用户专用下行控制信道和下行共享信道区域复用一个或多个资源块对， 且分别配置于该资源块对的第 1时隙和第 2时隙的区域；
在扩展的用户专用下行控制信道所占的第 1 时隙的调制参考信号的 功率与下行共享信道所占的第 2 时隙的调制参考信号的功率不相同时， 基站发送扩展的用户专用下行控制信道所占的第 1 时隙的调制参考信号 的 EPRE与第 2时隙的调制参考信号的 EPRE的第二比值；
该第二比值用于提供给终端对对接收到的调制参考信号信道估计进 行功率补偿。 根据本发明实施例的另一个方面提供了一种功率补偿方法， 该方法 包括： 将用户专用下行控制信道区域扩展到下行共享信道区域， 扩展的 用户专用下行控制信道区域配置于一个或多个资源块对的第 1时隙； 在扩展的用户专用下行控制信道采用振幅相位联合键控调制方式 时， 基站发送扩展的用户专用下行控制信道的 EPRE与扩展的用户专用下 行控制信道所占的第 1时隙的调制参考信号的 EPRE的第三比值， 该第三 比值用于提供给终端对接收到的该基站发送的下行控制信道数据译码时 进行功率补偿；
在该下行共享信道区域配置于该一个或多个资源块的第 2时隙的区 域， 且在扩展的用户专用下行控制信道所占的第 1 时隙的调制参考信号 的功率与下行共享信道所占的第 2时隙的调制参考信号的功率不相同时， 基站发送扩展的用户专用下行控制信道所占的第 1 时隙的调制参考信号 的 EPRE与第 2时隙的调制参考信号的 EPRE的第四比值， 该第四比值用 于提供给终端对接收到的调制参考信号信道估计进行功率补偿。
根据本发明实施例的另一个方面提供了一种功率补偿方法， 该方法 包括： 用户专用下行控制信道区域扩展到下行共享信道区域， 扩展的用 户专用下行控制信道区域配置于一个或多个资源块对的第 1时隙的区域; 该下行共享信道部分区域或全部区域配置于该一个或多个资源块对的第 2时隙的区域、 或者配置于与该一个或多个资源块对不同的资源块对上； 基站配置功率补偿值；
该基站发送该功率补偿值， 该功率补偿值用于提供给终端对接收到 的该基站发送的下行控制信道数据或下行共享信道数据译码时进行功率 补偿、 或者对接收到的调制参考信号信道估计进行功率补偿。
根据本发明实施例的另一个方面提供了一种功率补偿方法， 该方法 包括：
终端接收基站发送的扩展的用户专用下行控制信道的 EPRE与用户专 用下行控制信道所占的第 1时隙的调制参考信号的 EPRE的第五比值； 或 者接收基站发送的扩展的用户专用下行控制信道所占的第 1 时隙的调制 参考信号的 EPRE与第 2时隙的调制参考信号的 EPRE的第六比值； 或者 接收基站发送的功率补偿值； 该终端利用该第五比值、 或者第六比值、 或者功率补偿值对从该基 站接收到的下行控制信道或下行共享信道数据译码时进行功率补偿、 或 者对接收到的调制参考信号信道估计进行功率补偿。
根据本发明实施例的另一个方面提供了一种基站， 该基站包括： 第一资源配置器， 用于将用户专用下行控制信道区域扩展到下行共 享信道区域， 扩展的用户专用下行控制信道区域配置于一个或多个资源 块对的第 1时隙；
第一判断单元， 用于判断扩展的用户专用下行控制信道的调制方式 是否为振幅相位联合键控调制方式；
第一补偿信息发送器， 用于在该第一判断单元的判断结果为扩展的 用户专用下行控制信道采用振幅相位联合键控调制方式时， 向终端发送 扩展的用户专用下行控制信道的 EPRE与扩展的用户专用下行控制信道所 占的第 1时隙的调制参考信号的 EPRE的第一比值， 该第一比值用于提供 给终端对接收到的该基站发送的下行控制信道数据译码时进行功率补偿。
根据本发明实施例的另一个方面提供了一种基站， 该基站包括： 第二资源配置器， 用于将用户专用下行控制信道区域扩展到下行共 享信道区域， 扩展的用户专用下行控制信道区域和该下行共享信道区域 复用一个或多个资源块对， 且分别配置于该资源块对的第 1 时隙和第 2 时隙的区域；
第二判断单元， 用于判断扩展的用户专用下行控制信道所占的第 1 时隙的调制参考信号的功率与下行共享信道所占的第 2 时隙的调制参考 信号的功率是否相同；
第二补偿信息发送器， 用于在该第二判断单元的判断结果为扩展的 用户专用下行控制信道所占的第 1 时隙的调制参考信号的功率与下行共 享信道所占的第 2 时隙的调制参考信号的功率不同时， 向终端发送扩展 的用户专用下行控制信道所占的第 1时隙的调制参考信号的 EPRE与第 2 时隙的调制参考信号的 EPRE的第二比值；
该第二比值用于提供给终端对接收到的调制参考信号信道估计进行 功率补偿。
根据本发明实施例的另一个方面提供了一种基站， 该基站包括： 第三资源配置器， 用于将用户专用下行控制信道区域扩展到下行共 享信道区域， 扩展的用户专用下行控制信道区域配置于一个或多个资源 块对的第 1时隙的区域；
第三判断单元， 用于判断扩展的用户专用下行控制信道的调制方式 是否为振幅相位联合键控调制方式；
第三补偿信息发送单元， 用于在该第三判断单元的判断结果为扩展 的用户专用下行控制信道采用振幅相位联合键控调制方式时， 向终端发 送扩展的用户专用下行控制信道的 EPRE与扩展的用户专用下行控制信道 所占的第 1时隙的调制参考信号的 EPRE的第三比值， 该第三比值用于提 供给终端对接收到的该基站发送的下行控制信道数据译码时进行功率补偿； 第四判断单元， 用于判断该下行共享信道配置在该一个或多个资源 块的第 2 时隙的区域还是配置在与该一个或多个资源块对不同的资源块 对上， 且扩展的用户专用下行控制信道所占的第 1 时隙的调制参考信号 的功率与下行共享信道所占的第 2时隙的调制参考信号的功率是否相同； 第四补偿信息发送单元， 用于在该第四判断单元的判断结果为该下 行共享信道配置在该一个或多个资源块的第 2 时隙的区域、 且扩展的用 户专用下行控制信道所占的第 1 时隙的调制参考信号的功率与下行共享 信道所占的第 2 时隙的调制参考信号的功率不同时， 向终端发送扩展的 用户专用下行控制信道所占的第 1时隙的调制参考信号的 EPRE与第 2时 隙的调制参考信号的 EPRE的第四比值；
该第四比值用于提供给终端对接收到的调制参考信号信道估计进行 功率补偿。
根据本发明实施例的另一个方面提供了一种基站， 该基站包括： 第四资源配置器， 用于将用户专用下行控制信道区域扩展到下行共 享信道区域， 扩展的用户专用下行控制信道区域配置于一个或多个资源 块对的第 1 时隙； 该下行共享信道的部分区域或全部区域配置于该一个 或多个资源块对的第 2 时隙的区域、 或者配置于与该一个或多个资源块 对不同的资源块对上；
补偿信息配置器， 用于配置功率补偿值， 该功率补偿值用于提供给 终端对接收到的该基站发送的数据译码时进行功率补偿、 或者对接收到 的调制参考信号信道估计进行功率补偿；
第七补偿信息发送器， 用于向终端发送该功率补偿值。
根据本发明实施例的另一个方面提供了一种终端， 该终端包括： 补偿信息接收器， 用于接收基站发送的扩展的用户专用下行控制信 道的 EPRE与扩展的用户专用下行控制信道所占的第 1时隙的调制参考信 号的 EPRE的第五比值； 或者终端设备接收基站发送的扩展的用户专用下 行控制信道所占的第 1时隙的调制参考信号的 EPRE与第 2时隙的调制参 考信号的 EPRE的第六比值； 或者基站发送的功率补偿值；
功率补偿器， 用于利用接收到的该第五比值、 或者第六比值、 或者 功率补偿值对接收到的基站发送的下行控制信道或下行共享信道数据译 码时进行功率补偿、或者对接收到的调制参考信号信道估计进行功率补偿。
根据本发明实施例的另一个方面提供了一种计算机可读程序， 其中 当在基站中执行该程序时， 该程序使得计算机在该基站中执行上述功率 补偿方法。
根据本发明实施例的另一个方面提供了一种存储有计算机可读程序 的存储介质， 其中该计算机可读程序使得计算机在基站中执行上述功率 补偿方法。
根据本发明实施例的另一个方面提供了一种计算机可读程序， 其中 当在终端中执行该程序时， 该程序使得计算机在该终端中执行上述功率 补偿方法。
根据本发明实施例的另一个方面提供了一种存储有计算机可读程序 的存储介质， 其中该计算机可读程序使得计算机在该终端中执行上述功 率补偿方法。
本发明实施例的有益效果在于：在将 PDCCH的发送区域扩展到 PDSCH 区域的情况下， 在扩展的用户专用下行控制信道采用振幅相位联合键控 调制方式时， 基站发送扩展的用户专用下行控制信道的 EPRE与扩展的用 户专用下行控制信道所占时隙的调制参考信号的 EPRE的第一比值； 或者 在扩展的用户专用下行控制信道所占的第 1 时隙的调制参考信号的功率 与下行共享信道所占的第 2 时隙的调制参考信号的功率不相同时， 基站 发送扩展的用户专用下行控制信道所占的第 1 时隙的调制参考信号的 EPRE与下行共享信道所占的第 2时隙的调制参考信号的 EPRE的第二比 值， 使得终端根据上述比值对接收到的该基站发送的 PDCCH或 PDSCH数 据译码时进行功率补偿， 或对接收的 DM-RS信道估计进行功率补偿， 保 证了信道估计的正确性及终端设备对接收到的数据进行正确解调。
参照后文的说明和附图， 详细公开了本发明的特定实施方式， 指明 了本发明的原理可以被采用的方式。 应该理解， 本发明的实施方式在范 围上并不因而受到限制。 在所附权利要求的精神和条款的范围内， 本发 明的实施方式包括许多改变、 修改和等同。
针对一种实施方式描述和 /或示出的特征可以以相同或类似的方式在 一个或更多个其它实施方式中使用， 与其它实施方式中的特征相组合， 或替代其它实施方式中的特征。
应该强调， 术语 "包括 /包含"在本文使用时指特征、 整件、 歩骤或 组件的存在， 但并不排除一个或更多个其它特征、 整件、 歩骤或组件的 存在或附加。 附图说明
从以下结合附图的详细描述中， 本发明实施例的上述以及其他目的、 特征和优点将变得更加显而易见， 在附图中：
图 1A是 LTE系统的 PDCCH/PDSCH的区域配置示意图；
图 1B是本发明实施例中的 LTE-A系统的 PDCCH/PDSCH的区域配 置示意图；
图 2A是本发明实施例中 PDCCH和 PDSCH的发送区域占用相同的 资源块对 （RB pair) 的示意图；
图 2B是本发明实施例中 PDCCH和 PDSCH的发送区域占用不同的 资源块对 （RBpair) 的示意图；
图 3是本发明实施例 1的功率补偿方法流程图；
图 4是本发明实施例 3的功率补偿方法流程图；
图 5是本发明实施例 4的功率补偿方法流程图；
图 6是本发明实施例 5的功率补偿方法流程图；
图 7是本发明实施例 6的基站构成示意图；
图 8是本发明实施例 7的基站构成示意图； 图 9是本发明实施例 8的基站构成示意图；
图 10是本发明实施例 9的基站构成示意图；
图 11是作为终端设备的示例使用的移动电话的示意图；
图 12是本发明实施例 10的终端设备构成示意图；
图 13是本发明实施例 10中功率补偿器 1202的构成示意图； 图 14是本发明实施例 10中功率补偿器 1202的构成示意图。。 具体实施方式
下面结合附图对本发明的各种实施方式进行说明。 这些实施方式只 是示例性的， 不是对本发明的限制。 为了使本领域的技术人员能够容易 地理解本发明的原理和实施方式， 本发明的实施方式以 LTE-A系统为例 进行说明， 但可以理解， 本发明并不限于上述系统， 对于涉及功率补偿 的其他系统均适用。
图 1A是 LTE系统中 PDCCH/PDSCH区域示意图。 如图 1A所示， 在 Rel-8中， 第 1~N个 OFDM符号为 PDCCH可能的发送区域， 如表 1 所示， N=l, 2, 3或者 4由高层配置， 例如图 1A所示， N=3。 从第 N+1 个 OFDM符号开始为 PDSCH的发送区域。其中，表 1是 PDCCH所使用 的 OFDM符号的数量。
为了提高小区边缘用户的性能以及小区容量， 在 LTE-A系统中， 将 PDCCH的发送区域从前 N个 OFDM符号扩展到从第 N+1个符号开始的 PDSCH区域。
图 1B是本发明实施例的 PDCCH/PDSCH发送区域示意图。如图 1B 所示，用户专用（UE-specific)PDCCH的发送区域从 Rel-8的前 N个 OFDM 符号扩展到 PDSCH的发送区域， 扩展到 PDSCH的发送区域的 PDCCH 称之为扩展的 PDCCH区域， 例如， 如图 1B所示， PDCCH的发送区域 从原前 N个 OFDM符号扩展到占据前 7个 OFDM符号， 但此为本发明 实施例， 可根据实际需要扩展到 PDSCH的发送区域。 表 1
Figure imgf000011_0001
在本实施例中， 扩展的 PDCCH的发送区域与该 PDSCH的发送区域 可复用一个或多个资源块对（RB pair) , 且分别配置于该一个或多个资源 块对的第 1时隙（Slot)和第 2时隙的区域。此外，扩展的 PDCCH与 PDSCH 的发送区域也可分别配置于不同的资源块对上， 例如， PDSCH的全部发 送区域配置在与 PDCCH发送区域所在资源块对不同的资源块对上，或者 PDSCH的一部分发送区域配置在与 PDCCH发送区域所在资源块对不同 的资源块上，另一部分发送区域配置在与 PDCCH发送区域相同的资源块 对上。 图 2A是本发明实施例中扩展的 PDCCH和 PDSCH的发送区域占 用相同的资源块对 （RB pair) 的示意图。 如图 2A所示， 扩展的 PDCCH 的发送区域占用资源块对的第#M资源块、 第 1时隙， PDSCH的发送区 域占用第 #M资源块、 第 2时隙。
图 2B是本发明实施例中扩展的 PDCCH和 PDSCH的发送区域占用 不同的资源块对 （RB pair) 的示意图。 如图 2B所示， 扩展的 PDCCH的 发送区域占用第 #M资源块、 第 1时隙， PDSCH的发送区域占用第 #M+1 上述图 2A和图 2B仅示出了扩展的 PDCCH和 PDSCH的发送区域占 用一个相同和不同的 RB对的具体实例，但不限于上述实例， 还可为占用 多个资源块对的情况， 为简单地说明本发明实施例， 下面以图 2A和图 2B为例进行说明。
下面参照附图对本发明实施例进行说明。 在本发明实施例中， 为了 提高小区容量以及保证终端设备对接收到的基站发送的数据的正确解 调， 基站侧需要向终端提供相关的功率补偿信息。
实施例 1
图 3是本发明实施例 1的功率补偿方法流程图。 如图 3所示， 该方 法包括： 在扩展的用户专用下行控制信道 （UE-specific PDCCH) 采用振 幅相位联合键控 （APK， Amplitude Phase Keying) 调制方式时， 基站发 送扩展的用户专用下行控制信道 （UE-specific PDCCH) 的 EPRE与扩展 的用户专用 PDCCH所占的第 1时隙的调制参考信号（DM-RS)的 EPRE 的第一比值； 该第一比值用于提供给终端对接收到的该基站发送的 PDCCH译码时进行功率补偿 （见歩骤 301 )。
在本实施例中，上述实施例适用于 PDCCH和所调度的 PDSCH占用 一个资源块对的情况、 也适用于占用不同资源块对的情况。 例如， 对于 图 2A和图 2B的情况均适用。 此外， 上述实施例还适用于 PDSCH的一 部分发送区域与 PDCCH 的发送区域占用一个或多个相同的资源块对的 情况； 另一部分发送区域占用不同的资源块对的情况。
在本实施例中， EPRE (Energy Per Resource Element) 是指每个资源 元素的发送能量。 其中， 该第一比值例如可表示为 A， 用公式可表示为：
= P(PDCCH ) ^其中， ρ(ρ/ :α ^表示扩展的用户专用 pDccH的 EPRE, P人 DM _ RS
^DM - RS)表示扩展的用户专用 PDCCH所占的第 1 时隙的 DM-RS 的 EPREo
在本实施例中， 可通过高层信令， 如无线资源控制 （RRC， Radio Resource Control) 信令来发送第一比值 。
此外， 该基站还可将在扩展的 PDCCH采用的调制方式的信息向终 端发送 （见歩骤 302)， 其中， 可将该调制方式的信息包含在该高层信令 中与第一比值 ^同时发送。 但上述歩骤 302为可选歩骤。
在本实施例中， 该基站还向终端设备发送 PDCCH 数据信号和 DM-RS导频信号， 使得该终端设备利用上述第一比值 对接收检测到的 数据译码时进行功率补偿， 从而保证了终端设备对接收到的数据进行正 确解调。
由上述实施例可知， 在扩展的用户专用 PDCCH采用 APK调制方式 时， 基站需要向终端设备发送扩展的用户专用下行控制信道的 EPRE与用 户专用 PDCCH所占的时隙的调制参考信号的 EPRE的第一比值， 使得该 终端设备根据该第一比值对接收到的该基站发送的 PDCCH译码时进行 功率补偿， 保证了终端设备对接收到的数据进行正确解调。
实施例 2
本发明实施例还提供一种功率补偿方法， 该方法包括： 在扩展的用 户专用 PDCCH所占的第 1 时隙的调制参考信号 （DM-RS ) 的功率与 PDSCH所占的第 2时隙的调制参考信号 （DM-RS ) 的功率不相同时， 基 站发送扩展的用户专用 PDCCH 所占的第 1 时隙的调制参考信号 (DM-RS) 的 EPRE与第 2时隙的调制参考信号 （DM-RS ) 的 EPRE的 第二比值；
该第二比值用于提供给终端对接收到的 DM-RS 信道估计进行功率 补偿。
在本实施例中，上述实施例适用于 PDCCH和所调度的 PDSCH占用 同一个或多个资源块对的情况。 例如可用于图 2A的情况。
在本实施例中， EPRE (Energy Per Resource Element) 是指每个资源 元素的发送能量。 其中， 该第二比值例如可表示为^ 用公式可表示为：
Figure imgf000013_0001
. 其中， A (H ^>表示扩展的用户专用 PDCCH所占的 第 1时隙的 DM-RS的 EPREo ^H ^表示与扩展的用户专用 PDCCH 处于相同资源块对 （RB pair) 中第 2时隙的区域的 DM-RS的 EPRE。
在本实施例中，该基站还向终端设备发送 PDSCH数据信号和导频信 号，使得该终端设备利用上述第二比值 对接收到的 DM-RS信道估计时 进行功率补偿， 保证了终端设备信道估计的正确性。
由上述实施例可知， 在扩展的用户专用 PDCCH所占的第 1 时隙的 DM-RS的功率与 PDSCH所占的第 2时隙的 DM-RS的功率不相同时，基 站向终端设备发送扩展的用户专用 PDCCH所占的第 1时隙的 DM-RS的 EPRE与第 2时隙的 DM-RS的 EPRE的第二比值， 使得该终端设备根据 该第二比值对接收到的 DM-RS信道估计时进行功率补偿，保证了终端设 备信道估计的正确性。
实施例 3
在上述实施例 1禾 Π 2中，分别对在扩展的用户专用 PDCCH采用 APK 调制方式、 以及扩展的用户专用 PDCCH所占的第 1时隙的 DM-RS的功 率与 PDSCH所占的第 2时隙的 DM-RS的功率不相同的情况的功率补偿 方法分别进行了说明。 在本实施例中， 对将上述方法结合使用的实例进 行说明。
图 4是本发明实施例 3的功率补偿方法流程图。 如图 4所示， 该方 法包括：
歩骤 401， 进行资源配置；
在本实施例中，将 PDCCH的发送区域扩展到 PDSCH的区域，例如， 如图 2A和 2B所示，扩展的 PDCCH与 PDSCH的发送区域可占用同一资 源块对（RB pair, Resource Block pair) , 也可占用不同的资源块对。 如图 2B所示， 当 PDCCH与 PDSCH占用不同资源块对时， PDCCH所占用的 资源块对的第 2个时隙不发送 PDSCH。
歩骤 402，判断在扩展的用户专用 PDCCH采用的调制方式是否为 APK 调制方式， 若判断结果为是， 则执行歩骤 403 ; 否则执行歩骤 404。
歩骤 403， 基站发送扩展的用户专用 PDCCH的 EPRE与用户专用 PDCCH所占的第 1时隙的调制参考信号（DM-RS )的 EPRE的第三比值； 其中， 该第三比值用于提供给终端对接收到的该基站发送的 PDCCH 译码时进行功率补偿；
在本实施例中， 基站可通过高层信令将上述第三比值向终端侧发送， 在发送该第三比值的同时， 还可将调制方式在该高层信令中同时发送。
歩骤 404， 进一歩判断扩展的 PDCCH与 PDSCH是否占用相同的资 源块对；
在本实施例中， 例如， 若配置了图 2A所对应的占用同一个资源块对 的情况， 则执行歩骤 405 ; 若配置了图 2B所对应的占用不同资源块对的 情况， 则过程结束。
歩骤 405， 进一歩判断扩展的用户专用 PDCCH所占的第 1时隙的调 制参考信号（DM-RS )的功率与 PDSCH所占的第 2时隙的调制参考信号 (DM-RS )的功率是否相同， 若判断结果为不同时， 则执行歩骤 406， 否 则过程结束。
歩骤 406， 基站发送扩展的用户专用 PDCCH所占的第 1时隙的调制 参考信号 （DM-RS ) 的 EPRE与处于相同资源块对中的第 2时隙的调制 参考信号 （DM-RS ) 的 EPRE的第四比值；
其中， 该第四比值用于提供给终端对接收到的该基站发送的 DM-RS 信道估计进行功率补偿。
在上述实施例中， 首先判断扩展的 PDCCH所采用的调制方式， 然 后再判断扩展的用户专用 PDCCH所占的第 1 时隙的 DM-RS 的功率与 PDSCH所占的第 2时隙的 DM-RS的功率是否相同， 但上述仅为本发明 实施例而已，不限于上述判断顺序，例如，还可首先执行歩骤 404和 405， 然后在执行歩骤 402。 总之， 无论采用哪种判断顺序， 目的在于基站向终 端发送第三和第四比值， 使得终端利用该第三和第四比值对接收到的 PDCCH 数据和 PDSCH 数据译码时进行功率补偿、 或者对接收到的 DM-RS信道估计进行功率补偿， 保证终端设备信道估计的正确性及终端 设备对接收到的数据进行正确解调。
实施例 4
图 5是本发明实施例 4的功率补偿方法流程图。 如图 5所示， 该方 法包括：
歩骤 501，基站配置功率补偿值， 该功率补偿值用于提供给终端对接 收到的该基站发送的 PDCCH数据或 PDSCH译码时进行功率补偿、 或者对 接收到的 DM-RS信道估计进行功率补偿；
在本实施例中， 该功率补偿值可表示为如 Δ ， 该功率补偿值 Δ 可根 据信道状态、 小区间的干扰、 位于相同资源块对的 PDCCH与 PDSCH的秩 的差异等因素决定。例如， 该功率补偿值可为 AP = 10XlOgl。(%)dB，其中，
M表示 PDSCH对应的预编码矩阵的秩， N表示 PDCCH对应的预编码矩阵 的秩。
歩骤 502， 该基站向终端发送该功率补偿值；
在本实施例中， 基站可通过高层信令将上述功率补偿值向终端发送。 上述实施例对于 PDCCH区域扩展到 PDSCH区域的任何情况均适用， 如对于图 2A和图 2B的情况均适用。
由上述实施例可知， 基站可根据实际情况配置功率补偿值， 使得该 终端设备根据该功率补偿值对接收到的该基站发送的 PDCCH或 PDSCH数 据译码时进行功率补偿，或者对接收到的 DM-RS信道估计进行功率补偿， 保证了信道估计的正确性和终端设备对接收到的数据进行正确解调， 并 且该方式实现简单。
上述实施例 1-实施例 4的发送区域配置情况以图 2A和图 2B的情况 作的说明， 但还适用于 PDSCH的一部分发送区域与扩展的 PDCCH的发 送区域占用一个或多个相同的资源块对的情况、 另一部分发送区域占用 不同的资源块对的情况， 功率补偿原理类似， 此处不再赘述。
在上述实施例 1-4中， 基站可通过高层信令将上述第一到第四比值、 或者功率补偿值向终端发送， 但不限于此。 此外， 该基站还向终端设备 发送数据信号和导频信号（DM-RS信号），使得该终端设备利用上述比值 或功率补偿值对接收到的数据译码时进行功率补偿， 或者对接收到的 DM-RS信道估计进行功率补偿， 保证了信道估计的正确性和终端设备对 接收到的数据进行正确解调。
实施例 5
图 6是本发明实施例 5的功率补偿方法。 如图 6所示， 该方法包括： 歩骤 601， 终端接收基站发送的扩展的用户专用 PDCCH的 EPRE与用 户专用 PDCCH所占的第 1时隙的 DM-RS的 EPRE的第五比值； 或者接收基 站发送的扩展的用户专用 PDCCH所占的第 1时隙的 DM-RS的 EPRE与第 2 时隙的 DM-RS的 EPRE的第六比值； 或者接收基站发送的功率补偿值； 歩骤 602， 该终端利用接收到的该第五比值、或者第六比值、或者功 率补偿值对从基站接收到的下行控制信道或下行共享信道数据译码时进 行功率补偿、 或者对接收到的调制参考信号信道估计进行功率补偿。 其中， 该第五比值对应于实施例 1或 3中的第一比值或第三比值； 第六比值对应于实施例 2或 3中的第二比值或第四比值。
在本实施例中， 基站还向终端设备发送 PDCCH或 PDSCH数据信号以 及 DM-RS信号 （导频信号）， 终端接收上述数据信号和导频信号。
其中， 该终端接收基站发送的导频信号和数据信号， 可基于该导频 信号进行信道估计， 基于信道估计结果对该数据信号进行数据检测， 并 利用该第五比值、 或者第六比值、 或者功率补偿值对检测后的数据进行 功率补偿。
以下通过实例对终端设备利用上述比值或功率补偿值对接收到的数 据译码时进行功率补偿的方法进行详细说明。例如， 基站发送数据信号 d 及导频信号 P， 经无线衰落信道后， 终端设备接收到的信号为：
y = H(^d) + n ;
其中， 为终端设备接收到的数据信号， 为方差为 1的调制符号， A为基站发送数据的功率， 为无线衰落信道， "为噪声。 ^为终端设备 接收到的导频信号， 为方差为 1的导频符号， 为基站发送导频的功率。
该终端设备通过信道估计， 获得无线衰落信道 的估计值 ，
Figure imgf000017_0001
基于信道估计获得 ， 该终端设备进行数据检测， 若忽略噪声的影 响， 估得的数据 ^表示为， ΆΙ
Figure imgf000017_0002
Ιβ≠., 为去掉不同发送功率的影响， 需对估得的数据 ^中去掉功率的影响， 即进行功率补偿； 及 = ^¾/A =
因此， 在终端设备获知 的值， 即获知导频与数据的 EPRE比值， 该 EPRE比值为上述第一比值或第三比值、或者为基站配置的功率补偿值， 则该终端设备可对检测后的数据进行功率补偿， 以保证正确解调数据。
以下通过实例对终端设备利用上述比值或功率补偿值对接收到的 DM-RS信道估计进行功率补偿的方法进行详细说明。
例如， 基站发送数据信号 d及导频信号 p (即 DM-RS信号）， 经无线 衰落信道后， 终端设备接收到的信号为：
y2 = Η{β2ρ) + η ;
3 = Η(β3ρ) + η ;
其中， 为终端设备接收到的数据信号， 为方差为 1的调制符号， A为基站发送数据的功率， 为无线衰落信道， "为噪声。 ^为终端设备 接收到的第 1个时隙的导频信号， _y3为终端设备接收到的第 2个时隙的 导频信号； 为方差为 1的导频符号， ^为基站发送第 1个时隙导频的功 率， A为基站发送第 2个时隙导频的功率。
该终端设备通过信道估计， 获得第 1 时隙的无线衰落信道 H的估计 值 与第 2时隙的无线衰落信道 ^的估计值 2， 用公式表示为：
Hj = y2lp = Ηβ2 + η/ ρ；
Η2 = y p = Ηβ3 + nl p ;
当信道时域变化较慢时， 往往假定第 1时隙与第 2时隙的信道相同， 并基于此假设做时域的信道插值。 为得到相同的 ^与 2， 需对估得的信 道中去掉功率的影响， ^ = Κ β2 Ι β 。
因此， 在终端设备获知 / Α的值， 即获知第 1时隙导频与第 2时隙 导频的功率比， 即 EPRE比值， 该 EPRE比值可为上述第二或第四比值、 或者为基站配置的功率补偿值， 这样， 该终端设备可利用上述比值可对 DM-RS信道估计进行功率补偿， 以保证正确解调数据。
由上述实施例可知， 终端设备可利用基站发送的扩展的用户专用
PDCCH的 EPRE与用户专用 PDCCH所占的第 1时隙的 DM-RS的 EPRE的第五 比值； 或者接收基站发送的扩展的用户专用 PDCCH所占的第 1 时隙的 DM-RS的 EPRE与第 2时隙的 DM-RS的 EPRE的第六比值；或者接收基站发 送的功率补偿值， 对接收到的数据译码时进行功率补偿或对接收到的 DM-RS信道估计进行功率补偿， 以保证信道估计正确性以及对接收到数据 的正确解调。
本发明实施例还提供了一种基站和终端设备， 如下面的实施例 6至 实施例 10所述。 由于该基站和终端设备解决问题的原理与上述基于基站 和终端设备的功率补偿方法相似， 因此该基站和终端设备的实施可以参 见方法的实施， 重复之处不再赘述。
实施例 6
图 7是本发明实施例 6的基站构成示意图。 如图 7所示， 该基站包 括第一资源配置器 701、 第一判断单元 702和第一补偿信息发送器 703 ; 其中，
第一资源配置器 701，用于将用户专用下行控制信道区域扩展到下行 共享信道区域， 扩展的用户专用下行控制信道区域配置于一个或多个资 源块对的第 1时隙；
第一判断单元 702，用于判断扩展的用户专用下行控制信道的调制方 式是否为振幅相位联合键控调制方式；
第一补偿信息发送器 703，用于在扩展的用户专用下行控制信道采用 振幅相位联合键控调制方式时， 向终端发送扩展的用户专用下行控制信 道的 EPRE与扩展的用户专用下行控制信道所占第 1时隙的调制参考信号 的 EPRE 的第一比值， 第一比值用于提供给终端对接收到的基站发送的 PDCCH数据译码时进行功率补偿。
此外， 该基站还可包括调制信息发送单元（图中未使出）， 用于向终 端发送包括调制方式在内的信息。
其中， 第一补偿信息发送器 703可通过高层信令向终端设备发送上 述第一比值， 并且可将调制方式同时包含在该高层信令中发送， 这样， 该调制信息发送单元具体由第一补偿信息发送器 703执行。
在上述实施例中， PDSCH的部分区域或全部区域配置在一个或多个 资源块对的第 2时隙的区域；或者 PDSCH区域未配置在该一个或多个资 源块对上。
实施例 7
图 8是本发明实施例 7的基站构成示意图。 如图 8所示， 该基站包 括第二资源配置器 801、 第二判断单元 802和第二补偿信息发送器 803 ; 其中，
第二资源配置器 801，用于将用户专用下行控制信道区域扩展到下行 共享信道区域， 扩展的用户专用下行控制信道和下行共享信道复用一个 或多个资源块对， 且分别配置于该资源块对的第 1时隙和第 2时隙的区域; 第二判断单元 802，用于判断扩展的用户专用下行控制信道所占的第 1时隙的调制参考信号的功率与下行共享信道所占的第 2时隙的调制参考 信号的功率是否相同；
第二补偿信息发送器 803，用于在第二判断单元 802的判断结果为扩 展的用户专用下行控制信道所占的第 1 时隙的调制参考信号的功率与扩 展的下行共享信道所占的第 2 时隙的调制参考信号的功率不同时， 向终 端发送扩展的用户专用下行控制信道所占的第 1 时隙的调制参考信号的 EPRE与第 2时隙的调制参考信号的 EPRE的第二比值；
该第二比值用于提供给终端对接收到的该基站发送的调制参考信号 信道估计进行功率补偿。
实施例 8
此外， 在本实施例中， 还可将实施例 7与实施例 6的基站结合起来 实现功率补偿。 图 9是本发明实施例 8的基站构成示意图。
其中， 若采用如图 4所示的实施例 3的执行顺序， 则如图 9所示， 该基站可包括：
第三资源配置器 901，用于将用户专用下行控制信道区域扩展到下行 共享信道区域， 扩展的用户专用下行控制信道区域配置于一个或多个资 源块对的第 1时隙的区域；
第三判断单元 902，用于判断扩展的用户专用下行控制信道的调制方 式是否为振幅相位联合键控调制方式；
第三补偿信息发送单元 903，用于在该第三判断单元 902的判断结果 为扩展的用户专用下行控制信道采用振幅相位联合键控调制方式时， 向 终端发送扩展的用户专用下行控制信道的 EPRE与扩展的用户专用下行控 制信道所占的第 1时隙的调制参考信号的 EPRE的第三比值， 该第三比值 用于提供给终端对接收到的该基站发送的下行控制信道数据译码时进行 功率补偿；
第四判断单元 904，用于判断该下行共享信道区域配置在该一个或多 个资源块的第 2 时隙的区域还是配置在与该一个或多个资源块对不同的 资源块对上， 且扩展的用户专用下行控制信道所占的第 1 时隙的调制参 考信号的功率与下行共享信道所占的第 2 时隙的调制参考信号的功率是 否相同；
第四补偿信息发送单元 905，用于在该第四判断单元 904的判断结果 为该下行共享信道区域配置在该一个或多个资源块的第 2 时隙的区域、 且扩展的用户专用下行控制信道所占的第 1 时隙的调制参考信号的功率 与下行共享信道所占的第 2 时隙的调制参考信号的功率不同时， 向终端 发送扩展的用户专用下行控制信道所占的第 1 时隙的调制参考信号的 EPRE与第 2时隙的调制参考信号的 EPRE的第四比值；
该第四比值用于提供给终端对接收到的该基站发送的调制参考信号 信道估计进行功率补偿。
图 9所示的基站仅为本发明实施例， 基站各个组成部分的连接关系 可根据实际的执行顺序进行调整。
实施例 9
图 10是本发明实施例 9的基站构成示意图。 如图 10所示， 该基站 包括第四资源配置器 1001、补偿信息配置器 1002和第五补偿信息发送器 1003 ; 其中，
第四资源配置器 1001， 用于将用户专用下行控制信道区域扩展到下 行共享信道区域， 扩展的用户专用下行控制信道区域配置于一个或多个 资源块对的第 1 时隙； 该下行共享信道的部分区域或全部区域配置于该 一个或多个资源块对的第 2 时隙的区域、 或者配置于与该一个或多个资 源块对不同的资源块对上；
补偿信息配置器 1002， 用于配置功率补偿值， 该功率补偿值用于提 供给终端对接收到的基站发送的数据译码时进行功率补偿、 或者对接收 到的 DM-RS信道估计进行功率补偿； 第五补偿信息发送器 1003， 用于向 终端发送功率补偿值。
在上述实施例 6-9中， 该基站均可包括发送器（未示出）， 用于向终 端设备发送数据信号和导频信号。
由上述实施例可知， 基站向终端设备发送扩展的用户专用下行控制 信道的 EPRE与扩展的用户专用 PDCCH所占的第 1时隙的 DM-RS的 EPRE 的比值， 或者扩展的用户专用 PDCCH所占的第 1时隙的 DM-RS的 EPRE与 第 2时隙的 DM-RS的 EPRE的比值； 或者功率补偿值， 以使终端设备利用 上述比值或功率补偿值对接收到的数据译码时进行功率补偿或对接收到 的 DM-RS信道估计进行功率补偿， 以保证信道估计的正确性以及对接收 到数据的正确解调。
实施例 10
图 11是作为终端设备的示例使用的移动电话的示意图。终端设备的 示例不限于移动电话， 也可以是具有通信能力的任何设备， 例如游戏机、 PDA, 便携式电脑等。
如图 11所示， 移动电话 100可以是具有可在打开位置与闭合位置之 间移动的翻盖 1101的翻盖型电话。 在图 11中， 翻盖 1101被示出为处于 打开位置。 应了解的是， 移动电话 100 可以为其它结构， 诸如 "长板型 电话"或 "滑盖型电话" 的结构。
移动电话 100可包括显示器 1102，显示器 1102向用户显示诸如操作 状态、 时间、 电话号码、 电话簿信息、 各种菜单等的信息， 使得用户能 利用移动电话 100的各种特征。 显示器 1102还可以用于可视地显示移动 电话 100接收到的和 /或从移动电话 100的存储器 （未示出） 检索到的内 容。 显示器 1102可用于向用户呈现图像、 视频和其他图形， 诸如相片、 移动电视内容以及与游戏相关的视频。
键盘 1103提供了多种用户输入操作。 例如， 键盘 1103可包括允许 输入字母数字信息 （诸如， 电话号码、 电话列表、 电话簿信息、 记事本、 文本等） 的字母数字键。 此外， 键盘 1003可包括特定的功能键 1104， 诸 如用于启动或应答电话的 "呼叫发送"键、 以及用于结束或者 "挂断" 电话的 "呼叫结束"键。 特定的功能键还可以包括在显示在显示器 1102 上的菜单来方便地进行导航的菜单导航键和选择键。 例如， 可以提供指 点设备和 /或导航键以接收来自用户的方向性输入。 此外， 显示器 1102 和键盘 1103可以彼此结合起来使用以实现软键的功能。 移动电话 100中 还包括天线、 微控制器、 扬声器 1105和麦克风 1106等实现其功能所必 须的部件。
图 12是本发明实施例 10的终端设备构成示意图。 如图 12所示， 依 据本发明一种实施方式的用户设备 100，该终端设备包括补偿信息接收器 1201和功率补偿器 1202 ; 其中， 补偿信息接收器 1201， 用于接收基站发送的扩展的用户专用下行控 制信道的 EPRE与配置于第 1时隙的区域的调制参考信号的 EPRE的第一 比值； 或者终端设备接收基站发送的配置于第 1 时隙的区域内的调制参 考信号的 EPRE与配置于第 2时隙的区域内的调制参考信号的 EPRE的第 二比值； 或者基站发送的功率补偿值；
功率补偿器 1202， 用于利用第一比值、 或者第二比值、 或者功率补 偿值对接收到的 PDCCH或 PDSCH数据译码时进行功率补偿、 或者对接收 到的 DM-RS信道估计进行功率补偿。
如图 12所示，该终端还可包括信息接收器 1203，用于接收基站发送 的导频信号和数据信号。
其中， 在对接收到的 PDCCH或 PDSCH数据译码时进行功率补偿的情 况下， 图 13是本发明实施例 12中功率补偿器 1202的构成示意图。 如图 13所示， 功率补偿器 1202包括：
信道估计器 1301， 用于对无线衰落信道进行信道估计；
数据检测器 1302，用于基于信道估计结果对数据信号进行数据检测； 第一补偿器 1303， 用于利用第一比值、 或者功率补偿值对数据检测 器检测后的数据进行功率补偿。
上述对 PDCCH或 PDSCH数据译码时进行功率补偿与实施例 5类似， 此处不再赘述。
另外， 在对接收到的 DM-RS信道估计进行功率补偿的情况下， 图 14 是本发明实施例 12中功率补偿器 1202的构成示意图。 如图 14所示， 功 率补偿器 1202包括：
信道估计器 1401， 用于对无线衰落信道进行信道估计；
第二补偿器 1402， 用于利用第二比值、 或者功率补偿值对信道估计 结果进行功率补偿。
由上述实施例可知， 终端设备可利用基站发送的第一比值、 或者第 二比值、 或者第 1时隙的区域的扩展的用户专用 PDCCH的功率补偿值， 对接收到的数据译码时进行功率补偿， 以保证对接收到数据的正确解调。
本发明实施例还提供一种计算机可读程序， 其中当在基站中执行该 程序时， 该程序使得计算机在该基站中执行实施例 1-4所述的功率补偿 方法。
根据本发明实施例的另一个方面提供了一种存储有计算机可读程序 的存储介质，其中该计算机可读程序使得计算机在基站中执行实施例 1-4 所述功率补偿方法。
根据本发明实施例的另一个方面提供了一种计算机可读程序， 其中 当在终端中执行该程序时，该程序使得计算机在该终端中执行上述实施 5 所述的功率补偿方法。
根据本发明实施例的另一个方面提供了一种存储有计算机可读程序 的存储介质， 其中该计算机可读程序使得计算机在源基站中执行上述实 施例 5所述的功率补偿方法。
本发明以上的装置和方法可以由硬件实现， 也可以由硬件结合软件 实现。 本发明涉及这样的计算机可读程序， 当该程序被逻辑部件所执行 时， 能够使该逻辑部件实现上文所述的装置或构成部件， 或使该逻辑部 件实现上文所述的各种方法或歩骤。 逻辑部件例如现场可编程逻辑部件、 微处理器、 计算机中使用的处理器等。 本发明还涉及用于存储以上程序 的存储介质， 如硬盘、 磁盘、 光盘、 DVD、 flash存储器等。
以上结合具体的实施方式对本发明进行了描述， 但本领域技术人员 应该清楚， 这些描述都是示例性的， 并不是对本发明保护范围的限制。 本领域技术人员可以根据本发明的精神和原理对本发明做出各种变型和 修改， 这些变型和修改也在本发明的范围内。

Claims

权利 要 求 书
1、 一种功率补偿方法， 所述方法包括： 将用户专用下行控制信道区 域扩展到下行共享信道区域， 扩展的用户专用下行控制信道区域配置于 一个或多个资源块对的第 1时隙；
在扩展的用户专用下行控制信道采用振幅相位联合键控调制方式 时， 基站发送扩展的用户专用下行控制信道的 EPRE与扩展的用户专用下 行控制信道所占的第 1时隙的调制参考信号的 EPRE的第一比值；
所述第一比值用于提供给终端对接收到的所述基站发送的下行控制 信道数据译码时进行功率补偿。
2、 根据权利要求 1所述的方法， 其中， 所述方法还包括： 所述基站 向所述终端发送包括调制方式在内的信息。
3、 根据权利要求 1或 2所述的方法， 其中， 所述下行共享信道的部 分区域或全部区域配置在所述一个或多个资源块对的第 2 时隙的区域； 或者所述下行共享信道区域未配置在所述一个或多个资源块对上。
4、 一种功率补偿方法， 所述方法包括： 将用户专用下行控制信道区 域扩展到下行共享信道区域， 扩展的用户专用下行控制信道和下行共享 信道区域复用一个或多个资源块对， 且分别配置于所述资源块对的第 1 时隙和第 2时隙的区域；
在扩展的用户专用下行控制信道所占的第 1 时隙的调制参考信号的 功率与下行共享信道所占的第 2 时隙的调制参考信号的功率不相同时， 基站发送扩展的用户专用下行控制信道所占的第 1 时隙的调制参考信号 的 EPRE与第 2时隙的调制参考信号的 EPRE的第二比值；
所述第二比值用于提供给终端对对接收到的调制参考信号信道估计 进行功率补偿。
5、 一种功率补偿方法， 所述方法包括： 将用户专用下行控制信道区 域扩展到下行共享信道区域， 扩展的用户专用下行控制信道区域配置于 一个或多个资源块对的第 1时隙；
在扩展的用户专用下行控制信道采用振幅相位联合键控调制方式 时， 基站发送扩展的用户专用下行控制信道的 EPRE与扩展的用户专用下 行控制信道所占的第 1时隙的调制参考信号的 EPRE的第三比值， 所述第 三比值用于提供给终端对接收到的所述基站发送的下行控制信道数据译 码时进行功率补偿；
在所述下行共享信道区域配置于所述一个或多个资源块的第 2时隙 的区域， 且在扩展的用户专用下行控制信道所占的第 1 时隙的调制参考 信号的功率与下行共享信道所占的第 2 时隙的调制参考信号的功率不相 同时， 基站发送扩展的用户专用下行控制信道所占的第 1 时隙的调制参 考信号的 EPRE与第 2时隙的调制参考信号的 EPRE的第四比值， 所述第 四比值用于提供给终端对接收到的调制参考信号信道估计进行功率补偿。
6、 一种功率补偿方法， 所述方法包括： 用户专用下行控制信道区域 扩展到下行共享信道区域， 扩展的用户专用下行控制信道区域配置于一 个或多个资源块对的第 1 时隙的区域； 所述下行共享信道部分区域或全 部区域配置于所述一个或多个资源块对的第 2 时隙的区域、 或者配置于 与所述一个或多个资源块对不同的资源块对上；
基站配置功率补偿值；
所述基站发送所述功率补偿值， 所述功率补偿值用于提供给终端对 接收到的所述基站发送的下行控制信道数据或下行共享信道数据译码时 进行功率补偿、 或者对接收到的调制参考信号信道估计进行功率补偿。
7、 一种功率补偿方法， 所述方法包括：
终端接收基站发送的扩展的用户专用下行控制信道的 EPRE与用户专 用下行控制信道所占的第 1时隙的调制参考信号的 EPRE的第五比值； 或 者接收基站发送的扩展的用户专用下行控制信道所占的第 1 时隙的调制 参考信号的 EPRE与第 2时隙的调制参考信号的 EPRE的第六比值； 或者 接收基站发送的功率补偿值；
所述终端利用所述第五比值、 或者第六比值、 或者功率补偿值对从 所述基站接收到的下行控制信道或下行共享信道数据译码时进行功率补 偿、 或者对接收到的调制参考信号信道估计进行功率补偿。
8、 一种基站， 所述基站包括：
第一资源配置器， 用于将用户专用下行控制信道区域扩展到下行共 享信道区域， 扩展的用户专用下行控制信道区域配置于一个或多个资源 块对的第 1时隙； 第一判断单元， 用于判断扩展的用户专用下行控制信道的调制方式 是否为振幅相位联合键控调制方式；
第一补偿信息发送器， 用于在所述第一判断单元的判断结果为扩展 的用户专用下行控制信道采用振幅相位联合键控调制方式时， 向终端发 送扩展的用户专用下行控制信道的 EPRE与扩展的用户专用下行控制信道 所占的第 1时隙的调制参考信号的 EPRE的第一比值， 所述第一比值用于 提供给终端对接收到的所述基站发送的下行控制信道数据译码时进行功 率补偿。
9、 根据权利要求 8所述的基站， 其中， 所述基站还包括：
调制信息发送器， 用于向所述终端发送包括调制方式在内的信息。
10、 一种基站， 所述基站包括：
第二资源配置器， 用于将用户专用下行控制信道区域扩展到下行共 享信道区域， 扩展的用户专用下行控制信道区域和所述下行共享信道区 域复用一个或多个资源块对， 且分别配置于所述资源块对的第 1 时隙和 第 2时隙的区域；
第二判断单元， 用于判断扩展的用户专用下行控制信道所占的第 1 时隙的调制参考信号的功率与下行共享信道所占的第 2 时隙的调制参考 信号的功率是否相同；
第二补偿信息发送器， 用于在所述第二判断单元的判断结果为扩展 的用户专用下行控制信道所占的第 1 时隙的调制参考信号的功率与下行 共享信道所占的第 2 时隙的调制参考信号的功率不同时， 向终端发送扩 展的用户专用下行控制信道所占的第 1时隙的调制参考信号的 EPRE与第 2时隙的调制参考信号的 EPRE的第二比值；
所述第二比值用于提供给终端对接收到的调制参考信号信道估计进 行功率补偿。
11、 一种基站， 所述基站包括：
第三资源配置器， 用于将用户专用下行控制信道区域扩展到下行共 享信道区域， 扩展的用户专用下行控制信道区域配置于一个或多个资源 块对的第 1时隙的区域；
第三判断单元， 用于判断扩展的用户专用下行控制信道的调制方式 是否为振幅相位联合键控调制方式；
第三补偿信息发送单元， 用于在所述第三判断单元的判断结果为扩 展的用户专用下行控制信道采用振幅相位联合键控调制方式时， 向终端 发送扩展的用户专用下行控制信道的 EPRE与扩展的用户专用下行控制信 道所占的第 1时隙的调制参考信号的 EPRE的第三比值， 所述第三比值用 于提供给终端对接收到的所述基站发送的下行控制信道数据译码时进行 功率补偿；
第四判断单元， 用于判断所述下行共享信道配置在所述一个或多个 资源块的第 2 时隙的区域还是配置在与所述一个或多个资源块对不同的 资源块对上， 且扩展的用户专用下行控制信道所占的第 1 时隙的调制参 考信号的功率与下行共享信道所占的第 2 时隙的调制参考信号的功率是 否相同；
第四补偿信息发送单元， 用于在所述第四判断单元的判断结果为所 述下行共享信道配置在所述一个或多个资源块的第 2 时隙的区域、 且扩 展的用户专用下行控制信道所占的第 1 时隙的调制参考信号的功率与下 行共享信道所占的第 2 时隙的调制参考信号的功率不同时， 向终端发送 扩展的用户专用下行控制信道所占的第 1时隙的调制参考信号的 EPRE与 第 2时隙的调制参考信号的 EPRE的第四比值；
所述第四比值用于提供给终端对接收到的调制参考信号信道估计进 行功率补偿。
12、 一种基站， 所述基站包括：
第四资源配置器， 用于将用户专用下行控制信道区域扩展到下行共 享信道区域， 扩展的用户专用下行控制信道区域配置于一个或多个资源 块对的第 1 时隙； 所述下行共享信道的部分区域或全部区域配置于所述 一个或多个资源块对的第 2 时隙的区域、 或者配置于与所述一个或多个 资源块对不同的资源块对上；
补偿信息配置器， 用于配置功率补偿值， 所述功率补偿值用于提供 给终端对接收到的所述基站发送的数据译码时进行功率补偿、 或者对接 收到的调制参考信号信道估计进行功率补偿；
第七补偿信息发送器， 用于向终端发送所述功率补偿值。
13、 一种终端， 其中， 所述终端包括：
补偿信息接收器， 用于接收基站发送的扩展的用户专用下行控制信 道的 EPRE与扩展的用户专用下行控制信道所占的第 1时隙的调制参考信 号的 EPRE的第五比值； 或者终端设备接收基站发送的扩展的用户专用下 行控制信道所占的第 1时隙的调制参考信号的 EPRE与第 2时隙的调制参 考信号的 EPRE的第六比值； 或者基站发送的功率补偿值；
功率补偿器， 用于利用接收到的所述第五比值、 或者第六比值、 或 者功率补偿值对接收到的基站发送的下行控制信道或下行共享信道数据 译码时进行功率补偿、 或者对接收到的调制参考信号信道估计进行功率 补偿。
14、 一种计算机可读程序， 其中当在基站中执行所述程序时， 所述 程序使得计算机在所述基站中执行如权利要求 1至 6的任一项权利要求 所述的功率补偿方法。
15、 一种存储有计算机可读程序的存储介质， 其中所述计算机可读 程序使得计算机在基站中执行如权利要求 1至 6的任一项权利要求所述 功率补偿方法。
16、 一种计算机可读程序， 其中当在终端中执行所述程序时， 所述 程序使得计算机在所述终端中执行如权利要求 7所述的功率补偿方法。
17、 一种存储有计算机可读程序的存储介质， 其中所述计算机可读 程序使得计算机在所述终端中执行如权利要求 7所述的功率补偿方法。
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