WO2013155704A1 - 一种异构网中的功率自适应方法和装置 - Google Patents

一种异构网中的功率自适应方法和装置 Download PDF

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Publication number
WO2013155704A1
WO2013155704A1 PCT/CN2012/074449 CN2012074449W WO2013155704A1 WO 2013155704 A1 WO2013155704 A1 WO 2013155704A1 CN 2012074449 W CN2012074449 W CN 2012074449W WO 2013155704 A1 WO2013155704 A1 WO 2013155704A1
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Prior art keywords
base station
reference signal
power
micro base
macro base
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PCT/CN2012/074449
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English (en)
French (fr)
Inventor
吴联海
常宁娟
汪巍崴
徐海博
Original Assignee
富士通株式会社
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Application filed by 富士通株式会社 filed Critical 富士通株式会社
Priority to JP2015504836A priority Critical patent/JP2015513281A/ja
Priority to CN201280071463.6A priority patent/CN104170426A/zh
Priority to EP12874803.5A priority patent/EP2840823A4/en
Priority to PCT/CN2012/074449 priority patent/WO2013155704A1/zh
Priority to KR1020147028922A priority patent/KR20140138953A/ko
Publication of WO2013155704A1 publication Critical patent/WO2013155704A1/zh
Priority to US14/510,556 priority patent/US20150023309A1/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
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • H04W52/244—Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • 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
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
    • 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
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • 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
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/245—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/32—Hierarchical cell structures
    • 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
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
    • H04W52/225—Calculation of statistics, e.g. average, variance
    • 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
    • H04W52/38—TPC being performed in particular situations
    • H04W52/40—TPC being performed in particular situations during macro-diversity or soft handoff
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • the present invention relates to the field of communications, and in particular, to a power adaptive method and apparatus in a heterogeneous network. Background technique
  • the Long Term Evolution (LTE) of 3GPP follows the traditional homogeneous network, which consists of a hexagonal cellular system.
  • the Next Generation Wireless Communication System Advanced Long Term Evolution (LTE-Advanced) introduces a heterogeneous network (Heterogeneous Network).
  • the LTE-A system consists of a Macro Cell, a Femto Cell, a Pico Cell, a Remote Radio Head (RRH), and a Repeater (Relay). ) and other components. It not only increases the capacity of the system by deploying new wireless nodes, but also provides better service for users in special areas and optimizes system performance.
  • the pico eNB uses the coverage extension technology, the downlink transmission of the macro base station will be reversed.
  • the downlink transmission of the base station generates strong interference.
  • the macro base station (ABS) mode can be configured to reduce the macro base station to the pico UE (UE, User Equipment, user equipment, referred to as the user).
  • UE User Equipment
  • user equipment user equipment
  • An almost empty sub-frame refers to a sub-frame that transmits a signal in a reduced power form.
  • the inventors have found that in almost empty subframes, important broadcast information such as primary and secondary synchronization signals, system information, and the like are still transmitted at normal power for coverage purposes.
  • the signal that needs to be reduced in power is a unicast channel that transmits UE data.
  • the system throughput cannot be optimized. Therefore, power adaptive techniques are needed to improve this problem.
  • An object of the embodiments of the present invention is to provide a power adaptation method and apparatus in a heterogeneous network to optimize system throughput and mitigate interference caused by downlink transmission of a macro base station to a UE of a micro base station.
  • a power adaptation method in a heterogeneous network includes:
  • the micro base station receives the measurement value reported by the multiple user equipments (UEs) in the coverage area, and the measurement value includes the reference signal received power of each reference signal received by the UE by the micro base station and the reference sent by each UE receiving the macro base station.
  • the reference signal of the signal receives power, wherein the macro base station configures the micro base station with an almost null subframe;
  • the micro base station receives the reference signal received power of the reference signal sent by the micro base station, calculates an average value of the data received power of the UE, and receives, according to the reference signal received by the UE, the reference signal sent by the macro base station. Power, calculating an average value of reference signal received power of the reference signal transmitted by the UE receiving the macro base station;
  • a power adaptation method in a heterogeneous network includes:
  • the macro base station receives an average value of data received power of a plurality of UEs in the coverage range sent by the micro base station and an average value of reference signal received power of the reference signal transmitted by the UE by the macro base station;
  • a micro base station includes: a receiving unit, which receives measurement values reported by multiple UEs in a coverage area of the micro base station, where the measurement value includes Each of the UEs receives a reference signal received power of the reference signal transmitted by the micro base station and a reference signal received power of the reference signal sent by the macro base station, where the macro base station configures the micro base station with an almost null subframe; a calculating unit, configured to receive a reference signal received power of the reference signal sent by the micro base station, calculate an average value of the data received power of the UE, and receive, according to the reference signal sent by the macro base station, each UE Calculating an average value of reference signal received power of the reference signal transmitted by the UE receiving the macro base station;
  • a transmitting unit configured to send, by the macro base station, an average value of data received power of the UE and an average value of reference signal received power of the reference signal sent by the UE to the macro base station, so that the macro base station determines that it is The transmission power of the unicast physical channel in the almost empty subframe configured by the micro base station.
  • a macro base station includes: a receiving unit that receives an average value and a data receiving power of a plurality of UEs in a coverage range sent by the micro base station And receiving, by the UE, an average value of reference signal received power of the reference signal sent by the macro base station;
  • a calculating unit configured to calculate, according to the average value of the reference signal received power of the reference signal sent by the macro base station, and the transmit power of the common reference signal of the macro base station, calculate the macro base station to the edge of the micro base station Average path loss of the UE;
  • a determining unit which determines, according to an average path loss of the macro base station to the micro base station edge UE, and an average value of data received power of the UE, a unicast physical channel in an almost null subframe configured by the micro base station Transmit power.
  • a power adaptation method in a heterogeneous network includes:
  • the micro base station receives the measurement value reported by the multiple user equipments (UEs) in the coverage area, and the measurement value includes the reference signal reception quality of each reference signal received by the UE by the micro base station;
  • the micro base station calculates, according to the reference signal receiving quality of the reference signal sent by the micro base station, the average value of the reference signal receiving quality of the reference signal sent by the UE to the micro base station;
  • the micro base station determines whether the UE is strongly interfered by the macro base station according to an average value of the reference signal reception quality
  • the micro base station sends, to the macro base station, interference indication information indicating whether the UE is subjected to strong interference from the macro base station, so that the macro base station determines, according to the interference indication information, that it is unicast in an almost empty subframe configured by the micro base station.
  • the method of adjusting the transmission power of the physical channel
  • a power adaptation method in a heterogeneous network includes: The macro base station receives the interference indication information sent by the micro base station, where the interference indication information is used to indicate whether multiple UEs of the micro base station are strongly interfered by the macro base station;
  • the macro base station determines, according to the interference indication information, an adjustment manner of the transmission power of the unicast physical channel in the almost empty subframe configured by the micro base station.
  • a micro base station includes: a receiving unit, which receives measurement values reported by a plurality of user equipments (UEs) in a coverage area of the micro base station, where The measurement value includes a reference signal reception quality of each reference signal received by the UE by the micro base station, and a calculation unit, configured to receive the reference signal reception quality of the reference signal sent by the micro base station according to the UE, and calculate the UE reception An average value of the reference signal reception quality of the reference signal transmitted by the micro base station; a determining unit, configured to determine, according to an average value of the reference signal reception quality, whether the UE is strongly interfered by the macro base station;
  • UEs user equipments
  • a transmitting unit configured to send, to the macro base station, interference indication information, which is used to indicate whether the UE is subjected to strong interference of the macro base station, so that the macro base station determines, according to the interference indication information, that it is an almost empty subframe configured by the micro base station.
  • the adjustment method of the transmission power of the unicast physical channel configured to send, to the macro base station, interference indication information, which is used to indicate whether the UE is subjected to strong interference of the macro base station, so that the macro base station determines, according to the interference indication information, that it is an almost empty subframe configured by the micro base station.
  • a macro base station includes: a receiving unit, which receives interference indication information sent by a micro base station, where the interference indication information is used to indicate the micro base station Whether a plurality of UEs are strongly interfered by the macro base station;
  • a determining unit configured to determine, according to the interference indication information received by the receiving unit, an adjustment manner of a transmission power of the unicast physical channel in the almost empty subframe configured by the micro base station.
  • a computer readable program is provided, wherein, when the program is executed in a base station, the program causes a computer to perform a power adaptation method in the aforementioned heterogeneous network in the base station .
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a power adaptation method in the aforementioned heterogeneous network in a base station.
  • the beneficial effects of the embodiments of the present invention are as follows:
  • the method and the device in the embodiment of the present invention optimize the system throughput and reduce the interference caused by the downlink transmission of the macro base station to the UE of the micro base station.
  • FIG. 1 is a schematic diagram of a heterogeneous scenario in which a macro cell and a micro cell coexist;
  • FIG. 2 is a flow chart of a power adaptive method (micro base station) in a heterogeneous network according to an embodiment of the present invention
  • FIG. 3 is a flowchart of calculating an average value of data received power of a UE in the embodiment of FIG. 2;
  • FIG. 4 is a flowchart of a power adaptive method (macro base station) in a heterogeneous network according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a composition of a micro base station according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram showing the composition of a macro base station according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of a power adaptive method (micro base station) in a heterogeneous network according to another embodiment of the present invention
  • FIG. 8 is a flowchart of a power adaptive method (macro base station) in a heterogeneous network according to another embodiment of the present invention
  • FIG. 9 is a flowchart of determining an adjustment manner of a transmission power of a unicast physical channel in the embodiment of FIG. 8.
  • FIG. 10 is a schematic diagram of a composition of a micro base station according to another embodiment of the present invention.
  • FIG. 11 is a schematic diagram showing the composition of a macro base station according to another embodiment of the present invention. detailed description
  • a macro base station is in a heterogeneous network.
  • the macro eNB uses a pico eNB in a heterogeneous network as an example.
  • the embodiments of the present invention are not limited to the foregoing embodiments, and are applicable to other scenarios involving power adaptation.
  • Embodiments of the present invention provide a power adaptation method in a heterogeneous network.
  • 2 is a flow chart of the method. Referring to FIG. 2, the method includes:
  • Step 201 The micro base station receives the measurement value reported by the multiple user equipments (UEs) in the coverage area, where the measurement value includes the reference signal received power (RSRP S ) of each reference signal received by the UE by the micro base station, and each The UE receives the reference signal received power (RSRP N ) of the reference signal transmitted by the macro base station, where the macro base station configures the micro base station with almost blank subframes.
  • UEs multiple user equipments
  • the micro base station first performs measurement configuration on the UE with severe interference in the coverage area, so that the UE performs corresponding actions according to the measurement configuration, such as power measurement, measurement result reporting, and the like.
  • the UEs report the measured values of the serving base station and the neighboring base station according to the measurement configuration.
  • the measured value refers to the reference signal received power value, that is, RSRP (Reference Signal Received). Power, reference signal received power).
  • the RSRP of the serving base station is referred to as RSRP S , which refers to the reference signal received power of the reference signal sent by the serving base station, and the RSRP of the neighboring base station is RSRP N , which refers to the reference of the reference signal sent by the UE to the neighboring base station. Signal reception power.
  • the serving base station herein refers to a Pico base station according to an embodiment of the present invention
  • the neighbor base station refers to a macro base station that allocates almost blank subframes for the pico base station.
  • Step 202 The micro base station receives, according to the reference signal received power (RSRP S ) of the reference signal sent by the micro base station, the average value of the data received power of the UE, and sends the macro base station according to the received by the UE.
  • RSRP S reference signal received power
  • RSRP N reference signal received power
  • the micro base station when the micro base station receives the foregoing measurement values reported by multiple UEs in its coverage area After (RSRP S and RSRP N ), the micro base station can calculate an average value of the data reception power of these UEs and an average value of RSRP N according to the measured value.
  • step 202 calculating an average value of data reception power of the UEs may be implemented by using the method shown in FIG. 3. Referring to FIG. 3, the method includes:
  • Step 301 Calculate, according to the reference signal received power (RSRP S ) of the reference signal sent by the micro base station, the average value of the reference signal received power of the reference signal sent by the UE to the micro base station;
  • RSRP S reference signal received power
  • the average value of the RSRP is calculated, that is, the average of the 1 ⁇ 1 ⁇ 8 reported by the UEs is averaged. For example, if n UEs report RSRP S and RSRP N , the average value of the RSRP S is:
  • Step 302 Calculate an average path loss of the UE according to an average value of the reference signal received power of the reference signal sent by the micro base station and a transmit power of the common reference signal of the micro base station.
  • the transmit power of the common reference signal (CRS) of the micro base station is known, and the average path loss of the UE in its pico cell can be obtained by subtracting the average value of the RSRP S from the transmit power. That is, where: the transmit power of the common reference signal for the micro base station is the average path loss of the UEs in its serving cell.
  • Step 303 Calculate an average value of the data receiving power of the UEs according to the average path loss of the UEs and the average value of the data transmission powers of the UEs.
  • the micro base station knows the data transmission power of the UEs in its serving cell, and subtracts the average path loss of the UEs from the average value of the data transmission power of the UEs, and obtains the average data receiving power of the UEs.
  • Value ie:
  • the average value of the data received by the UE is the average value of the data received by the UE.
  • the average value of the RSRP N is calculated, that is, the RSRPj ⁇ X average reported to the UEs. For example, if the n UEs report RSRP S and RSRP N , the average value of the RSRP N is:
  • Step 203 The micro base station sends an average value of the data received power of the UE to the macro base station and an average value of the reference signal received power of the reference signal sent by the UE to the macro base station, so that the macro base station determines the The transmit power of the unicast physical channel in the almost empty subframe configured for the micro base station.
  • the micro base station may send, by using the X2 interface, the average value of the data received power of the UE in the serving cell to the macro base station, and the reference signal receiving power of the reference signal sent by the UE to the macro base station: ⁇ . Based on the two values, the macro base station can determine the downlink transmission power of the unicast physical channel in the almost empty subframe configured by the micro base station to avoid interference of the downlink transmission to the pico UE.
  • the micro base station calculates the average value of the data received power of the UEs and the average value of the reference signal received power of the reference signal sent by the receiving macro base station according to the measured values reported by the multiple UEs in the coverage area. And transmitting to the macro base station, so that the macro base station determines, according to the information, the downlink transmission power of the unicast physical channel in the almost empty subframe configured by the micro base station, thereby avoiding interference of the downlink transmission to the pico UE.
  • the power adaptive effect is achieved.
  • FIG. 4 is a flow chart of the method. Referring to Figure 4, the method includes:
  • Step 401 The macro base station receives an average value of data received power of multiple UEs in the coverage range sent by the micro base station, and an average value of reference signal received power of the reference signal sent by the multiple base stations by the multiple base stations.
  • step 401 the average value of the data receiving powers of the multiple UEs is recorded as ⁇ :, and the plurality of UEs receive the reference signal receiving power of the reference signal transmitted by the macro base station.
  • the average value is recorded as.
  • Step 402 Calculate the macro base station to the micro base station edge UE according to the average value of the reference signal received power of the reference signal sent by the macro base station and the transmit power of the common reference signal of the macro base station. Average path loss;
  • s w is the transmit power of the common reference signal (CRS, Common Reference Signal) of the macro base station, which is also known by the macro base station. It is the average path loss of the macro base station to the micro cell edge UE of the micro base station.
  • CRS Common Reference Signal
  • Step 403 Determine, according to an average path loss of the macro base station to the edge of the micro base station edge, and an average value of the data received power of the UE, the unicast physical channel in the almost empty subframe configured by the micro base station. Transmit power.
  • step 403 the power of the largest unicast physical channel in the almost empty subframe configured by the macro base station for the micro base station may be determined according to the signal to noise ratio formula.
  • the SNR of the formula ⁇ ⁇ wherein, P N ⁇ unicast transmission power of a physical channel, ⁇ ⁇ to the macro base station to a micro base station the average path loss of the edge of the UE, the UE data
  • the average value of the received power ". It is a predetermined scale factor, which can be an empirical value.
  • the transmission power of the macro eNB in the almost unicast physical channel in the almost empty subframe is ⁇ + « Q ⁇ .
  • the macro base station After receiving the average value of the data received power of the plurality of UEs of the coverage range sent by the micro base station and the average value of the reference signal received power of the reference signal sent by the macro base station, the macro base station The information and the signal-to-noise ratio calculation formula determine the downlink transmission power of the unicast physical channel in the almost empty subframe configured by the micro base station, thereby avoiding the interference of the downlink transmission to the pico UE, and achieving the power adaptive effect. .
  • the embodiment of the present invention further provides a micro base station, as described in the following embodiment 3.
  • the principle of the micro base station is similar to that of the first embodiment. Therefore, the implementation of the micro base station may refer to the method of the first embodiment. The implementation, the repetition will not be repeated.
  • FIG. 5 is a schematic diagram of the composition of the micro base station.
  • the micro base station includes:
  • the receiving unit 51 receives the measured value reported by the multiple UEs in the coverage of the micro base station, where the measured value includes the reference signal received power of each UE receiving the reference signal sent by the micro base station, and each UE receives the macro base station to send Reference signal received power of the reference signal, wherein the macro base station is configured for the micro base station Almost empty sub-frames;
  • the calculating unit 52 is configured to receive a reference signal received power of the reference signal sent by the micro base station, calculate an average value of data received power of the UE, and receive a reference signal sent by the macro base station according to each UE The reference signal received power, and calculates an average value of the reference signal received power of the reference signal transmitted by the UE receiving the macro base station;
  • a sending unit 53 which sends an average value of the data receiving power of the UE to the macro base station and an average value of the reference signal receiving power of the reference signal sent by the UE to the macro base station, so that the macro base station determines the The transmit power of the unicast physical channel in the almost empty subframe configured for the micro base station.
  • computing unit 52 includes:
  • a first calculation module 521 configured to receive, according to the reference signal received power of the reference signal sent by the micro base station, the average value of the reference signal received power of the reference signal sent by the UE by the micro base station;
  • a second calculation module 522 configured to calculate an average path loss of the UE according to an average value of reference signal received power of the reference signal sent by the micro base station and a transmit power of a common reference signal of the micro base station ;
  • the third calculating module 523 calculates an average value of the data receiving power of the UE according to an average path loss of the UE and an average value of data transmission power of the UE.
  • the micro base station of the embodiment calculates the average value of the data received power of the UE and the average value of the reference signal received power of the reference signal transmitted by the macro base station according to the measured values reported by the multiple UEs in the coverage area, and sends the average value of the received data of the reference signal received by the macro base station.
  • the macro base station is configured to determine, according to the information, the downlink transmission power of the unicast physical channel in the almost empty subframe configured by the micro base station, thereby avoiding the interference of the downlink transmission to the pico UE, and achieving the power self The effect of adaptation.
  • the embodiment of the present invention further provides a macro base station, as described in the following embodiment 4.
  • the principle of the macro base station is similar to the method of the second embodiment. Therefore, the implementation of the macro base station may refer to the method of the second embodiment. The implementation, the repetition will not be repeated.
  • the embodiment of the invention further provides a macro base station.
  • 6 is a schematic diagram of the composition of the macro base station.
  • the macro base station includes:
  • the receiving unit 61 receives the flat data receiving power of the plurality of UEs in the coverage range sent by the micro base station And an average value of the reference signal received power of the reference signal sent by the macro base station by the UE; and a calculating unit 62, configured to receive an average value of the reference signal received power of the reference signal sent by the macro base station according to the UE, And calculating, by the transmit power of the common reference signal of the macro base station, an average path loss of the macro base station to the edge UE of the micro base station;
  • a determining unit 63 which determines, according to an average path loss of the macro base station to the micro base station edge UE, and an average value of data received power of the UE, that is a unicast physical medium in an almost null subframe configured by the micro base station The transmit power of the channel.
  • the determining unit 63 is specifically configured to determine, according to the following formula, the maximum transmit power of the unicast physical channel in the almost empty subframe configured for the micro base station:
  • & is the transmission power of the unicast physical channel
  • ⁇ z is the macro base station to the edge of the micro base station
  • the average path loss of the UE is an average of the data received power of the UE, the ". It is a preset comparison factor.
  • the macro base station in this embodiment receives the average value of the data received power of the plurality of UEs whose coverage range is transmitted by the micro base station and the average value of the reference signal received power of the reference signal transmitted by the macro base station, according to the information and the letter.
  • the noise ratio calculation formula determines the downlink transmission power of the unicast physical channel in the almost empty subframe configured by the micro base station, thereby avoiding the interference of the downlink transmission to the pico UE, and achieving the power adaptive effect.
  • FIG. 7 is a flow chart of the method, please refer to Figure 7, the method includes:
  • Step 701 The micro base station receives the measurement value reported by the multiple user equipments (UEs) in the coverage area, where the measurement value includes the reference signal reception quality of each reference signal received by the UE by the micro base station;
  • UEs user equipments
  • the micro base station first performs measurement configuration on the UE with severe interference in the coverage area, so that the UE performs corresponding actions according to the measurement configuration, such as quality measurement, measurement result reporting, and the like.
  • the UE reports the measured value of the serving base station according to the measurement configuration.
  • the measured value refers to the reference signal receiving quality, that is, the RSRQ (Reference Signal Received Power, reference signal). Receive power).
  • the RSRQ of the serving base station is denoted as RSRQ S , which refers to the reference signal receiving quality of the reference signal transmitted by the UE receiving the serving base station.
  • the serving base station herein refers to the Pico base station according to the embodiment of the present invention.
  • Step 702 The micro base station calculates, according to the reference signal receiving quality of the reference signal sent by the micro base station, the average value of the reference signal receiving quality of the reference signal sent by the UE to the micro base station.
  • step 702 the average of the RSRQs is calculated, that is, the RSRQs reported by the UEs are averaged. For example, if n UEs report RSRQ S , the average value of the RSRP S is:
  • RSRQ s - ⁇ (RSRQ s (i))
  • Step 703 The micro base station determines, according to an average value of the reference signal reception quality, whether the UE is strongly interfered by the macro base station.
  • a comparison factor may be preset, and the average value of the reference signal reception quality is compared with the comparison factor to determine whether the UE is strongly interfered by the macro base station.
  • the average value of the reference signal reception quality is greater than or equal to the comparison factor, it is determined that the UE is subjected to strong interference from the macro base station. That is,
  • Step 704 The micro base station sends, to the macro base station, interference indication information, which is used to indicate whether the UE is subjected to strong interference from the macro base station, so that the macro base station determines, according to the interference indication information, an almost empty subframe configured by the micro base station.
  • the method of adjusting the transmission power of the unicast physical channel is used to indicate whether the UE is subjected to strong interference from the macro base station, so that the macro base station determines, according to the interference indication information, an almost empty subframe configured by the micro base station.
  • step 704 after determining, by step 703, whether the UE is subjected to strong interference from the macro base station, the micro base station sends indication information indicating whether the UE is strongly interfered by the macro base station, to the macro base station, so that the macro base station Determining the power indication manner, for example, reducing the transmission power of the unicast physical channel in the almost empty subframe configured by the micro base station, or increasing the unicast physical channel in the almost empty subframe configured by the micro base station.
  • the transmit power, or the transmit power of the unicast physical channel that keeps it almost empty subframes configured for the micro base station is unchanged. The specific manner of determination will be explained in the following embodiments.
  • the interference indication information may be indicated by 1-bit information. For example, “0” indicates that there is no strong interference, and “1” indicates strong interference.
  • the interference indication information may be placed in the load information of the X2 interface, and sent to the macro base station by using the message.
  • the indication method and the transmission method of the interference indication information are merely illustrative, and the method may be modified accordingly according to common knowledge in the art.
  • the downlink transmission power adjustment mode of the unicast physical channel in the frame thereby avoiding the interference of the downlink transmission to the pico UE, and achieving the power adaptive effect.
  • FIG. 8 is a schematic diagram of the composition of the method. Referring to Figure 8, the method includes:
  • Step 801 The macro base station receives the interference indication information sent by the micro base station, where the interference indication information is used to indicate whether multiple UEs of the micro base station are strongly interfered by the macro base station.
  • Step 802 The macro base station determines, according to the interference indication information, an adjustment manner of the transmission power of the unicast physical channel in the almost empty subframe configured by the micro base station.
  • step 802 can be implemented by using the method shown in FIG. 9. Referring to FIG. 9, the method includes:
  • Step 901 Determine whether the preset unicast power timer is started. If the unicast power timer is not started, go to step 902. Otherwise, go to step 903:
  • Step 902 Start the heightening unicast power timer, and continue to receive the interference indication information sent by the micro base station.
  • Step 903 Determine whether the heightening unicast power timer expires; if the heightening unicast power timing If the device expires, step 904 is performed, otherwise the interference indication information sent by the micro base station is continued to be received;
  • Step 904 Increase the transmission power of the unicast physical channel in the almost empty subframe configured by the micro base station.
  • the height of the transmission power may be increased by a predetermined step size, and may be other known height adjustment modes.
  • the embodiment of the present invention is not limited thereto.
  • the interference indication information is strong interference from the macro base station, in step 802, it may be determined according to a predetermined policy whether the transmission power of the unicast physical channel in the almost empty subframe configured for the micro base station needs to be reduced.
  • a predetermined policy whether the transmission power of the unicast physical channel is reduced may be determined according to its own load condition, and if the load is not heavy, the transmission power of the unicast physical channel may be reduced, if the load is already heavy, for example, exceeding a predetermined ratio. Or a predetermined value, then you can choose to keep the transmission power of the above unicast physical channel unchanged.
  • determining whether to reduce the transmission power of the unicast physical channel according to the load is only one implementation manner of the embodiment of the present invention.
  • some adjustment policies may be preset, which is not used in the embodiment of the present invention.
  • the reduction of the transmission power of the unicast physical channel may be reduced by a predetermined step size, or may be other known reduction manners, and the embodiment of the present invention is not limited thereto.
  • the unicast power timer may be in an activated state when the multiple eNBs of the micro base station receive the interference indication of the strong interference of the macro base station. Therefore, in this embodiment, It is also necessary to determine whether the preset elevated unicast power timer is in an active state, and if so, turn off the elevated unicast power timer. The determining may be performed before the step of determining whether the transmission power of the unicast physical channel needs to be reduced according to a predetermined policy, that is, after receiving the interference indication information, or determining whether the reduction is required according to a predetermined policy. After the step of transmitting power of the unicast physical channel, the embodiment of the present invention is not limited thereto.
  • the macro base station After receiving the interference indication information sent by the micro base station, the macro base station determines, according to the interference indication information, whether the UE of the micro base station is subjected to downlink strong interference of the macro base station, and adjusts the micro base station as the micro according to the method.
  • the downlink transmit power of the unicast physical channel in the almost empty subframe configured by the base station, thereby avoiding the interference of the downlink transmission to the pico UE, and achieving the power adaptive effect.
  • the embodiment of the present invention further provides a micro base station, as described in the following embodiment 7.
  • the principle of the micro base station is similar to the method of the embodiment 5, and the implementation of the micro base station may refer to the method of the embodiment 5. The implementation, the repetition will not be repeated.
  • FIG. 10 is a schematic diagram of the composition of the micro base station.
  • the micro base station includes:
  • Step 102 Calculate, according to the reference signal receiving quality of the reference signal sent by the micro base station, the average value of the reference signal received by the UE to receive the reference signal sent by the micro base station;
  • a determining unit 103 configured to determine, according to an average value of the reference signal receiving quality, whether the UE is strongly interfered by the macro base station;
  • the sending unit 104 sends, to the macro base station, interference indication information, which is used to indicate whether the UE is subjected to strong interference from the macro base station, so that the macro base station determines, according to the interference indication information, an almost empty subframe configured for the micro base station.
  • the determining unit 103 is specifically configured to: when the average value of the reference signal received quality of the reference signal sent by the UE to the micro base station is greater than or equal to a preset comparison factor, determine that the UE is subjected to a macro base station. Strong interference.
  • the interference indication information is indicated by 1-bit information.
  • the transmitting unit 104 transmits the interference indication information to the macro base station via a load information message of the X2 interface.
  • the micro base station in this embodiment determines whether the multiple UEs are strongly interfered by the macro base station according to the measured values reported by the multiple UEs in the coverage area and the preset comparison factor, and sends the corresponding interference indication information to the Acer base. a station, so that the macro base station determines, according to the interference indication information, that the downlink transmission power of the unicast physical channel in the almost empty subframe configured by the micro base station is adjusted, thereby avoiding interference of the downlink transmission to the pico UE, thereby achieving Power adaptive effect.
  • the embodiment of the present invention further provides a macro base station, as described in the following embodiment 8.
  • the principle of the macro base station is similar to the method of the sixth embodiment. Therefore, the implementation of the macro base station may refer to the method of the sixth embodiment. The implementation, the repetition will not be repeated.
  • the embodiment of the invention further provides a macro base station.
  • 11 is a schematic diagram of the structure of the macro base station. Referring to FIG. 11, the macro base station includes:
  • the receiving unit 111 receives the interference indication information sent by the micro base station, where the interference indication information is used to indicate whether the UE of the micro base station is strongly interfered by the macro base station;
  • the determining unit 112 determines, according to the interference indication information received by the receiving unit, an adjustment manner of the transmission power of the unicast physical channel in the almost empty subframe configured by the micro base station.
  • the determining unit 112 when the interference indication information is not strongly interfered by the macro base station, the determining unit 112 includes:
  • the first determining module 1121 determines whether the preset ping unicast power timer is started.
  • the starting module 1122 determines that the first deterministic unicast power timer is not set in the first determining module 1121. When starting, the heightening unicast power timer is started;
  • a second judging module 1123 when the judgment result of the first judging module 1121 is that the preset unicast power timer has been started, determining whether the boost unicast power timer expires;
  • the determining unit 112 includes:
  • Determining module 1125 which determines, according to a predetermined policy, whether it is required to reduce the transmission power of the unicast physical channel in the almost empty subframe configured for the micro base station;
  • the second adjustment module 1126 reduces the transmission power of the unicast physical channel when the determining module 1125 determines that the transmission power of the unicast physical channel needs to be reduced.
  • the determining unit 112 further includes:
  • a third determining module 1127 determining whether the preset ping unicast power timer is in an activated state; and closing the module 1128, when the determining result of the third determining module 1127 is YES, turning off the unicasting unicast Power timer.
  • the manner in which the first adjustment module 1124 and the second adjustment module 1126 adjust the transmission power of the unicast physical channel of the almost empty subframe may be adjusted according to a predetermined step size, or may be adjusted according to other policies.
  • the embodiments of the invention are not intended to be limiting.
  • the macro base station of the embodiment After receiving the interference indication information sent by the micro base station, the macro base station of the embodiment determines, according to the interference indication information, whether the UE of the micro base station is subjected to downlink strong interference of the macro base station, and adjusts (up or down) according to the macro base station.
  • the downlink transmit power of the unicast physical channel in the almost empty subframe configured for the micro base station, thereby avoiding the interference of the downlink transmission to the pico UE, and achieving the effect of power adaptation.
  • 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 execute Embodiment 1 or Embodiment 2 or Embodiment 5 or Embodiment 6 in the base station
  • Embodiment 1 or Embodiment 2 or Embodiment 5 or Embodiment 6 in the base station
  • the power adaptive method in the heterogeneous network
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to perform the method described in Embodiment 1 or Embodiment 2 or Embodiment 5 or Embodiment 6 in a base station. Power adaptive method in heterogeneous networks.
  • the above apparatus and method of the present invention may be implemented by hardware, or may be implemented 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 steps.
  • Logic components such as field programmable logic components, microprocessors, processors used in computers, and the like.
  • the invention also relates to A storage medium for storing the above programs, such as a hard disk, a magnetic disk, a compact disk, a DVD, a flash memory, or the like.

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Abstract

本发明实施例提供了一种异构网中的功率自适应方法和装置，所述方法包括：微基站接收其覆盖范围内的多个用户设备（UE）上报的服务基站和邻基站的参考信号接收功率；微基站根据所述参考信号接收功率，计算所述UE的数据接收功率的平均值，和所述UE接收宏基站发送的参考信号的参考信号接收功率的平均值；微基站向所述宏基站发送上述计算结果，以便所述宏基站据此确定其为所述微基站配置的几乎空子帧中单播物理信道的发送功率。通过本发明实施例的方法和装置，优化了系统吞吐量，减轻了宏基站的下行传输对微基站的UE造成的干扰。

Description

一种异构网中的功率自适应方法和装置 技术领域
本发明涉及通信领域， 尤其涉及一种异构网中的功率自适应方法和装置。 背景技术
3GPP (Third Generation Partnership Project, 第三代合作伙伴计划） 的长期演进 方案 （Long Term Evolution, LTE) 沿用了传统的同构网络， 它由六角形蜂窝系统组 成。 为了进一步提高系统的容量， 下一代无线通信系统高级长期演进方案 (LTE- Advanced)引入了异构网络（Heterogeneous Network )。在异构网络中， LTE-A 系统由宏小区 （Macro Cell)、 毫微微蜂窝 （Femto Cell)、 微微蜂窝 （Pico Cell)、 远 端无线头 （RRH， Remote Radio Head)、 中继器（Relay)等组成。 它通过部署新的无 线节点不仅提高了系统的容量， 而且可以为特殊区域的用户提供更好的服务，优化了 系统性能。
然而， 在宏小区 （macro cell) 和微小区 （pico cell) 共存的异构场景中， 如图 1 所示， 如果微基站 （pico eNB)运用了覆盖扩展技术， 宏基站的下行传输将对微基站 的下行传输产生强干扰。 目前， 可以通过宏基站 （macro eNB) 配置下行几乎空子帧 (ABS, almost blank subframe)的模式， 来减轻宏基站对微基站的 UE (pico UE) (UE， User Equipment, 用户设备， 简称用户） 的下行干扰。 几乎空子帧是指以降低功率形 式发送信号的子帧。
发明人在实现本发明的过程中发现， 在几乎空子帧中， 对于主副同步信号， 系统 信息等重要的广播信息， 还是会以正常功率发送， 以达到覆盖目的。 需要降低功率的 信号是发送 UE数据的单播信道。 然而， 在发送数据时， 如果一直以固定的功率发送 UE数据， 将无法优化系统吞吐量。 因此， 需要功率自适应技术来改善这一问题。
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异构网中的功率自适应方法和装置，以优化系 统吞吐量， 减轻宏基站的下行传输对微基站的 UE造成的干扰。
根据本发明实施例的一个方面， 提供了一种异构网中的功率自适应方法， 其中， 所述方法包括：
微基站接收其覆盖范围内的多个用户设备（UE)上报的测量值， 所述测量值包括 各个 UE接收所述微基站发送的参考信号的参考信号接收功率和各个 UE接收宏基站 发送的参考信号的参考信号接收功率，其中，所述宏基站为所述微基站配置了几乎空 子帧；
微基站根据所述各个 UE接收所述微基站发送的参考信号的参考信号接收功率， 计算所述 UE的数据接收功率的平均值， 根据所述各个 UE接收宏基站发送的参考信 号的参考信号接收功率，计算所述 UE接收宏基站发送的参考信号的参考信号接收功 率的平均值；
微基站向所述宏基站发送所述 UE的数据接收功率的平均值和所述 UE接收宏基 站发送的参考信号的参考信号接收功率的平均值，以便所述宏基站据此确定其为所述 微基站配置的几乎空子帧中单播物理信道的发送功率。
根据本发明实施例的一个方面， 提供了一种异构网中的功率自适应方法， 其中， 所述方法包括：
宏基站接收微基站发送的其覆盖范围内的多个 UE的数据接收功率的平均值和所 述 UE接收所述宏基站发送的参考信号的参考信号接收功率的平均值；
根据所述 UE接收所述宏基站发送的参考信号的参考信号接收功率的平均值， 和 所述宏基站的公共参考信号的发送功率，计算所述宏基站到所述微基站边缘 UE的平 均路损；
根据所述宏基站到所述微基站边缘 UE的平均路损， 和所述 UE的数据接收功率 的平均值， 确定为所述微基站配置的几乎空子帧中单播物理信道的发送功率。
根据本发明实施例的一个方面， 提供了一种微基站， 其中， 所述微基站包括： 接收单元， 其接收所述微基站覆盖范围内的多个 UE上报的测量值， 所述测量值 包括各个 UE接收所述微基站发送的参考信号的参考信号接收功率和各个 UE接收宏 基站发送的参考信号的参考信号接收功率，其中，所述宏基站为所述微基站配置了几 乎空子帧； 计算单元， 其根据所述各个 UE接收所述微基站发送的参考信号的参考信号接收 功率， 计算所述 UE的数据接收功率的平均值， 并根据所述各个 UE接收宏基站发送 的参考信号的参考信号接收功率，计算所述 UE接收宏基站发送的参考信号的参考信 号接收功率的平均值；
发送单元， 其向所述宏基站发送所述 UE的数据接收功率的平均值和所述 UE接 收宏基站发送的参考信号的参考信号接收功率的平均值，以便所述宏基站据此确定其 为所述微基站配置的几乎空子帧中单播物理信道的发送功率。
根据本发明实施例的一个方面， 提供了一种宏基站， 其中， 所述宏基站包括： 接收单元， 其接收微基站发送的其覆盖范围内的多个 UE的数据接收功率的平均 值和所述 UE接收所述宏基站发送的参考信号的参考信号接收功率的平均值；
计算单元， 其根据所述 UE接收所述宏基站发送的参考信号的参考信号接收功率 的平均值，和所述宏基站的公共参考信号的发送功率，计算所述宏基站到所述微基站 边缘 UE的平均路损；
确定单元， 其根据所述宏基站到所述微基站边缘 UE的平均路损， 和所述 UE的 数据接收功率的平均值，确定为所述微基站配置的几乎空子帧中单播物理信道的发送 功率。
根据本发明实施例的一个方面， 提供了一种异构网中的功率自适应方法， 其中， 所述方法包括：
微基站接收其覆盖范围内的多个用户设备（UE )上报的测量值， 所述测量值包括 各个 UE接收所述微基站发送的参考信号的参考信号接收质量；
微基站根据所述各个 UE接收所述微基站发送的参考信号的参考信号接收质量， 计算所述 UE接收所述微基站发送的参考信号的参考信号接收质量的平均值；
微基站根据所述参考信号接收质量的平均值， 确定所述 UE是否受到宏基站的强 干扰；
微基站向所述宏基站发送用于指示 UE 是否受到宏基站的强干扰的干扰指示信 息，以便所述宏基站根据所述干扰指示信息确定其为所述微基站配置的几乎空子帧中 单播物理信道的发送功率的调整方式。
根据本发明实施例的一个方面， 提供了一种异构网中的功率自适应方法， 其中， 所述方法包括： 宏基站接收微基站发送的干扰指示信息， 所述干扰指示信息用于指示所述微基站 的多个 UE是否受到所述宏基站的强干扰；
宏基站根据所述干扰指示信息确定其为所述微基站配置的几乎空子帧中单播物 理信道的发送功率的调整方式。
根据本发明实施例的一个方面， 提供了一种微基站， 其中， 所述微基站包括： 接收单元， 其接收所述微基站覆盖范围内的多个用户设备 （UE) 上报的测量值， 所述测量值包括各个 UE接收所述微基站发送的参考信号的参考信号接收质量； 计算单元， 其根据所述各个 UE接收所述微基站发送的参考信号的参考信号接收 质量， 计算所述 UE接收所述微基站发送的参考信号的参考信号接收质量的平均值； 确定单元， 其根据所述参考信号接收质量的平均值， 确定所述 UE是否受到宏基 站的强干扰；
发送单元， 其向所述宏基站发送用于指示 UE是否受到宏基站的强干扰的干扰指 示信息，以便所述宏基站根据所述干扰指示信息确定其为所述微基站配置的几乎空子 帧中单播物理信道的发送功率的调整方式。
根据本发明实施例的一个方面， 提供了一种宏基站， 其中， 所述宏基站包括： 接收单元， 其接收微基站发送的干扰指示信息， 所述干扰指示信息用于指示所述 微基站的多个 UE是否受到所述宏基站的强干扰；
确定单元， 其根据所述接收单元接收到的干扰指示信息， 确定其为所述微基站配 置的几乎空子帧中单播物理信道的发送功率的调整方式。
根据本发明实施例的一个方面， 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所述基站中执行前述的异构网中的功率自适应方 法。
根据本发明实施例的一个方面， 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前述的异构网中的功率自适应方 法。
本发明实施例的有益效果在于： 通过本发明实施例的方法和装置，优化了系统吞 吐量， 减轻了宏基站的下行传输对微基站的 UE造成的干扰。
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、 步骤或组件的存在， 但并不排除一个或更多个其它特征、 整件、 步骤或组件的存在或附加。 附图说明
参照以下的附图可以更好地理解本发明的很多方面。附图中的部件不是成比例绘 制的， 而只是为了示出本发明的原理。 为了便于示出和描述本发明的一些部分， 附图 中对应部分可能被放大或缩小。在本发明的一个附图或一种实施方式中描述的元素和 特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在 附图中， 类似的标号表示几个附图中对应的部件， 并可用于指示多于一种实施方式中 使用的对应部件。 在附图中：
图 1是宏小区和微小区共存的异构场景示意图；
图 2是本发明一个实施例的异构网中的功率自适应方法 （微基站） 流程图； 图 3是图 2的实施例中计算 UE的数据接收功率的平均值的流程图；
图 4是本发明一个实施例的异构网中的功率自适应方法 （宏基站） 流程图； 图 5是本发明一个实施例的微基站的组成示意图；
图 6是本发明一个实施例的宏基站的组成示意图；
图 7是本发明另一个实施例的异构网中的功率自适应方法 （微基站） 流程图； 图 8是本发明另一个实施例的异构网中的功率自适应方法 （宏基站） 流程图； 图 9是图 8的实施例中确定单播物理信道的发送功率的调整方式的流程图； 图 10是本发明另一个实施例的微基站的组成示意图；
图 11是本发明另一个实施例的宏基站的组成示意图。 具体实施方式
参照附图， 通过下面的说明书， 本发明实施例的前述以及其它特征将变得明显。 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异构网络中的单播物理信道 的功率自适应方法为例进行说明， 在以下的说明中， 宏基站以异构网中的 macro eNB 为例， 微基站以异构网中的 pico eNB为例。 但可以理解， 本发明实施例并不限于上 述实施例， 对于涉及功率自适应的其他场景均适用。
实施例 1
本发明实施例提供了一种异构网中的功率自适应方法。 图 2为该方法的流程图， 请参照图 2， 该方法包括：
步骤 201 : 微基站接收其覆盖范围内的多个用户设备 （UE)上报的测量值， 所述 测量值包括各个 UE接收所述微基站发送的参考信号的参考信号接收功率 （RSRPS) 和各个 UE接收宏基站发送的参考信号的参考信号接收功率 （RSRPN)， 其中， 所述 宏基站为所述微基站配置了几乎空子帧。
在本实施例中， 微基站先对其覆盖范围内受干扰严重的 UE进行测量配置， 使得 这些 UE按照测量配置进行相应的动作， 例如功率测量、 测量结果上报等。
在本实施例中， 这些 UE (pico UE) 根据测量配置上报其服务基站和邻基站的测 量值，在本实施例中，该测量值是指参考信号接收功率值，也即 RSRP( Reference Signal Received Power, 参考信号接收功率）。 其中， 服务基站的 RSRP记为 RSRPS， 是指该 UE接收服务基站发送的参考信号的参考信号接收功率;邻基站的 RSRP记为 RSRPN， 是指该 UE接收邻基站发送的参考信号的参考信号接收功率。
其中， 这里的服务基站指本发明实施例的 Pico基站， 邻基站指为该 pico基站分 配几乎空子帧的宏基站。
其中， 为 pico基站分配几乎空子帧的宏基站可能有多个， 在本实施例中， 以只有 一个宏基站为例。但可以理解， 当这样的宏基站有多个时， 仍然可以根据本发明实施 例的方法或者其变形进行功率自适应， 这样的方法或变形也包含于本发明的保护范 围。
步骤 202: 微基站根据所述各个 UE接收所述微基站发送的参考信号的参考信号 接收功率（RSRPS)， 计算所述 UE的数据接收功率的平均值， 根据所述各个 UE接收 宏基站发送的参考信号的参考信号接收功率 （RSRPN)， 计算所述 UE接收宏基站发 送的参考信号的参考信号接收功率的平均值；
在本实施例中， 当微基站接收到其覆盖范围内的多个 UE 上报的上述测量值 (RSRPS和 RSRPN)后， 该微基站即可根据该测量值计算这些 UE的数据接收功率的 平均值和 RSRPN的平均值。
在步骤 202中， 计算这些 UE的数据接收功率的平均值可以通过图 3所示的方法 来实现， 请参照图 3， 该方法包括：
步骤 301 : 根据所述各个 UE接收所述微基站发送的参考信号的参考信号接收功 率 （RSRPS)， 计算这些 UE接收所述微基站发送的参考信号的参考信号接收功率的 平均值；
在步骤 301中，计算 RSRP 平均值也就是对这些 UE上报的 1^1^8取平均。例 如， 假设 n个 UE上报 RSRPS和 RSRPN， 则该 RSRPS的平均值也就是：
RSRPS = - Y(RSRPS ( ))
η ,.ι
步骤 302: 根据这些 UE接收所述微基站发送的参考信号的参考信号接收功率的 平均值， 和所述微基站的公共参考信号的发送功率， 计算这些 UE的平均路损； 在步骤 302中， 微基站自己的公共参考信号 （CRS， Common Reference Signal) 的发送功率是已知的， 将该发送功率减去 RSRPS的平均值即可得到这些 UE在其服 务小区 （pico cell) 的平均路损， 也即： 其中， 为该微基站的公共参考信号的发送功率， 为这些 UE在其服务小 区的平均路损。
步骤 303: 根据这些 UE的平均路损， 和这些 UE的数据发送功率的平均值， 计 算这些 UE的数据接收功率的平均值。
在步骤 303中， 微基站已知这些 UE在其服务小区的数据发送功率， 将这些 UE 的数据发送功率的平均值减去这些 UE的平均路损， 即可得到这些 UE的数据接收功 率的平均值， 也即：
p - p - ρτ
其中， 是这些 UE在其服务小区的数据发送功率的平均平均值， 是这些
UE的数据接收功率的平均值。
在步骤 202中， 计算 RSRPN的平均值也就是对这些 UE上报的 RSRPj^X平均。 例如， 同样假设 n个 UE上报 RSRPS和 RSRPN， 则该 RSRPN的平均值也就是：
Figure imgf000010_0001
步骤 203:微基站向所述宏基站发送所述 UE的数据接收功率的平均值和所述 UE 接收宏基站发送的参考信号的参考信号接收功率的平均值，以便所述宏基站据此确定 其为所述微基站配置的几乎空子帧中单播物理信道的发送功率。
在本实施例中， 微基站可以通过 X2接口向宏基站发送上述 UE在服务小区的数 据接收功率的平均值^ 以及 UE 接收该宏基站发送的参考信号的参考信号接收功 率:^ 。根据这两个值，宏基站即可确定其为所述微基站配置的几乎空子帧中单播 物理信道的下行发送功率， 以避免其下行传输对 pico UE的干扰。
其中， 对于宏基站确定其为所述微基站配置的几乎空子帧中单播物理信道的下行 发送功率的方法， 将在以下的实施例中进行说明。
通过本实施例的方法， 微基站根据其覆盖范围的多个 UE上报的测量值， 计算其 这些 UE的数据接收功率的平均值和接收宏基站发送的参考信号的参考信号接收功率 的平均值， 并将其发送给宏基站， 以便于宏基站根据这些信息确定其为所述微基站配 置的几乎空子帧中单播物理信道的下行发送功率， 由此避免了其下行传输对 pico UE 的干扰， 达到了功率自适应的效果。
实施例 2
本发明实施例还提供了一种异构网中的功率自适应方法。图 4为该方法的流程图， 请参照图 4， 该方法包括：
步骤 401 : 宏基站接收微基站发送的其覆盖范围内的多个 UE的数据接收功率的 平均值和所述多个 UE 接收所述宏基站发送的参考信号的参考信号接收功率的平均 值；
在步骤 401中， 沿用实施例 1的举例， 将所述多个 UE的数据接收功率的平均值 记为^：，将所述多个 UE接收所述宏基站发送的参考信号的参考信号接收功率的平 均值记为 。
步骤 402: 根据所述 UE接收所述宏基站发送的参考信号的参考信号接收功率的 平均值， 和所述宏基站的公共参考信号的发送功率，计算所述宏基站到所述微基站边 缘 UE的平均路损；
在步骤 402中， 宏基站根据接收到的：^ ， 可知其到微基站对应的微小区边缘 UE的平均路损， 也即： =PRS_N - RSRPN
其中， s w为该宏基站的公共参考信号 （CRS, Common Reference Signal) 的发 送功率， 其也是宏基站已知的。 是该宏基站到该微基站的微小区边缘 UE的平均 路损。
步骤 403: 根据所述宏基站到所述微基站边缘 UE的平均路损， 和所述 UE的数 据接收功率的平均值，确定其为所述微基站配置的几乎空子帧中单播物理信道的发送 功率。
在步骤 403中， 可以根据信噪比公式确定宏基站为所述微基站配置的几乎空子帧 中的最大单播物理信道的^功率。
其中， 信噪比公式为 ^^≥ ， 其中， PN ^为单播物理信道的发送功率， Τ Ν 为所述宏基站到所述微基站边缘 UE的平均路损， 为所述 UE的数据接收功率的 平均值， 《。为预先设定的一个比例因子， 其可以为经验值。
由此可得： 因此， 宏基站在几乎空子帧中的最大单播物理信道的发送功率为^ + «Q ^。 通过本实施例的方法， 宏基站在接收到微基站发送的其覆盖范围的多个 UE的数 据接收功率的平均值和接收宏基站发送的参考信号的参考信号接收功率的平均值以 后，根据这些信息和信噪比计算公式， 确定其为所述微基站配置的几乎空子帧中单播 物理信道的下行发送功率， 由此避免了其下行传输对 pico UE的干扰， 达到了功率自 适应的效果。
本发明实施例还提供了一种微基站， 如下面的实施例 3所述， 由于该微基站解决 问题的原理与实施例 1 的方法类似， 因此该微基站的实施可以参照实施例 1 的方法 的实施， 重复之处不再赘述。
实施例 3
本发明实施例还提供了一种微基站。 图 5为该微基站的组成示意图，请参照图 5， 该微基站包括：
接收单元 51， 其接收所述微基站覆盖范围内的多个 UE上报的测量值， 所述测量 值包括各个 UE接收所述微基站发送的参考信号的参考信号接收功率和各个 UE接收 宏基站发送的参考信号的参考信号接收功率，其中，所述宏基站为所述微基站配置了 几乎空子帧；
计算单元 52，其根据所述各个 UE接收所述微基站发送的参考信号的参考信号接 收功率， 计算所述 UE的数据接收功率的平均值， 并根据所述各个 UE接收宏基站发 送的参考信号的参考信号接收功率，计算所述 UE接收宏基站发送的参考信号的参考 信号接收功率的平均值；
发送单元 53， 其向所述宏基站发送所述 UE的数据接收功率的平均值和所述 UE 接收宏基站发送的参考信号的参考信号接收功率的平均值，以便所述宏基站据此确定 其为所述微基站配置的几乎空子帧中单播物理信道的发送功率。
在一个实施例中， 计算单元 52包括：
第一计算模块 521， 其根据所述各个 UE接收所述微基站发送的参考信号的参考 信号接收功率，计算所述 UE接收所述微基站发送的参考信号的参考信号接收功率的 平均值；
第二计算模块 522， 其根据所述 UE接收所述微基站发送的参考信号的参考信号 接收功率的平均值， 和所述微基站的公共参考信号的发送功率， 计算所述 UE的平均 路损；
第三计算模块 523， 其根据所述 UE的平均路损， 和所述 UE的数据发送功率的 平均值， 计算所述 UE的数据接收功率的平均值。
本实施例的微基站根据其覆盖范围的多个 UE上报的测量值， 计算这些 UE的数 据接收功率的平均值和接收宏基站发送的参考信号的参考信号接收功率的平均值，并 将其发送给宏基站，以便于宏基站根据这些信息确定其为所述微基站配置的几乎空子 帧中单播物理信道的下行发送功率， 由此避免了其下行传输对 pico UE的干扰， 达到 了功率自适应的效果。
本发明实施例还提供了一种宏基站， 如下面的实施例 4所述， 由于该宏基站解决 问题的原理与实施例 2的方法类似，因此该宏基站的实施可以参考实施例 2的方法的 实施， 重复之处不再赘述。
实施例 4
本发明实施例还提供了一种宏基站。 图 6是该宏基站的组成示意图，请参照图 6， 该宏基站包括：
接收单元 61，其接收微基站发送的其覆盖范围内的多个 UE的数据接收功率的平 均值和所述 UE接收所述宏基站发送的参考信号的参考信号接收功率的平均值； 计算单元 62，其根据所述 UE接收所述宏基站发送的参考信号的参考信号接收功 率的平均值，和所述宏基站的公共参考信号的发送功率，计算所述宏基站到所述微基 站边缘 UE的平均路损；
确定单元 63， 其根据所述宏基站到所述微基站边缘 UE的平均路损， 和所述 UE 的数据接收功率的平均值，确定其为所述微基站配置的几乎空子帧中单播物理信道的 发送功率。
在一个实施例中， 确定单元 63 具体用于根据以下公式确定其为所述微基站配置 的几乎空子帧中单播物理信道的最大发送功率：
PN ^ PL^ + a^
其中， &为单播物理信道的发送功率， ^z 为所述宏基站到所述微基站边缘
UE的平均路损， 为所述 UE的数据接收功率的平均值， 所述《。为预先设定的比 较因子。
本实施例的宏基站在接收到微基站发送的其覆盖范围的多个 UE的数据接收功率 的平均值和接收宏基站发送的参考信号的参考信号接收功率的平均值以后，根据这些 信息和信噪比计算公式，确定其为微基站配置的几乎空子帧中单播物理信道的下行发 送功率， 由此避免了其下行传输对 pico UE的干扰， 达到了功率自适应的效果。
实施例 5
本发明实施例还提供了一种异构网中的功率自适应方法。图 7是该方法的流程图， 请参照图 7， 该方法包括：
步骤 701 : 微基站接收其覆盖范围内的多个用户设备 （UE)上报的测量值， 所述 测量值包括各个 UE接收所述微基站发送的参考信号的参考信号接收质量；
在本实施例中， 微基站先对其覆盖范围内受干扰严重的 UE进行测量配置， 使得 这些 UE按照测量配置进行相应的动作， 例如质量测量、 测量结果上报等。
在本实施例中， 这些 UE (pico UE) 根据测量配置上报其服务基站的测量值， 在 本实施例中，该测量值是指参考信号接收质量，也即 RSRQ ( Reference Signal Received Power, 参考信号接收功率）。 服务基站的 RSRQ记为 RSRQS， 是指该 UE接收服务 基站发送的参考信号的参考信号接收质量。
其中， 这里的服务基站指本发明实施例的 Pico基站。 步骤 702: 微基站根据所述各个 UE接收所述微基站发送的参考信号的参考信号 接收质量，计算所述 UE接收所述微基站发送的参考信号的参考信号接收质量的平均 值；
在步骤 702中， 计算 RSRQs的平均值也就是对这些 UE上报的 RSRQs取平均。 例如， 假设 n个 UE上报 RSRQS， 则该 RSRPS的平均值也就是：
RSRQs =-∑(RSRQs (i))
η ,.ι
步骤 703: 微基站根据所述参考信号接收质量的平均值， 确定所述 UE是否受到 宏基站的强干扰；
在步骤 703中， 可以预先设定一个比较因子 ， 将该参考信号接收质量的平均值 与该比较因子进行对比， 以确定上述 UE是否受到宏基站的强干扰。
例如， 当该参考信号接收质量的平均值大于等于该比较因子时， 确定上述 UE受 到了宏基站的强干扰。 也即，
如果 ^≥ ， 则判断为受到该宏基站的强干扰， 否则判断为未受强干扰。 步骤 704: 微基站向所述宏基站发送用于指示所述 UE是否受到宏基站的强干扰 的干扰指示信息，以便所述宏基站根据所述干扰指示信息确定其为微基站配置的几乎 空子帧中单播物理信道的发送功率的调整方式。
在步骤 704中， 当通过步骤 703确定所述 UE是否受到宏基站的强干扰之后， 微 基站将用于指示所述 UE是否受到宏基站的强干扰的指示信息发送给宏基站， 以便宏 基站根据该干扰指示信息， 确定其功率调整方式， 例如， 降低其为微基站配置的几乎 空子帧中单播物理信道的发送功率，或者调高其为微基站配置的几乎空子帧中单播物 理信道的发送功率，或者保持其为微基站配置的几乎空子帧的单播物理信道的发送功 率不变。 具体的确定方式将在以下的实施例中进行说明。
其中， 所述干扰指示信息可以通过 1 比特信息指示。 例如， 通过 "0"指示没有 受到强干扰， 通过 " 1 "指示受到强干扰。
其中， 所述干扰指示信息可以放在 X2接口的负载信息 （load information) 中， 通过该消息发送给所述宏基站。
在本实施例中， 干扰指示信息的指示方法和发送方法只是举例说明， 根据本领域 的公知常识， 可以对该方法进行相应的变形。
通过本实施例的方法， 微基站根据其覆盖范围的多个 UE上报的测量值， 以及预 先设定的比较因子， 判断该多个 UE是否受到宏基站的强干扰， 并将相应的干扰指示 信息发送给宏基站，以便于宏基站根据该干扰指示信息确定其为微基站配置的几乎空 子帧中单播物理信道的下行发送功率调整方式， 由此避免了其下行传输对 pico UE的 干扰， 达到了功率自适应的效果。
实施例 6
本发明实施例还提供了一种异构网中的功率自适应方法。 图 8是该方法的组成示 意图， 请参照图 8， 该方法包括：
步骤 801 : 宏基站接收微基站发送的干扰指示信息， 所述干扰指示信息用于指示 所述微基站的多个 UE是否受到所述宏基站的强干扰；
步骤 802: 宏基站根据所述干扰指示信息确定其为所述微基站配置的几乎空子帧 中单播物理信道的发送功率的调整方式。
在一个实施例中， 如果所述干扰指示信息为未受到宏基站的强干扰， 则步骤 802 可以通过图 9所示的方法来实现， 请参照图 9， 该方法包括：
步骤 901 : 判断预先设置的调高单播功率计时器是否启动， 如果所述调高单播功 率计时器未启动， 则执行步骤 902， 否则执行步骤 903 :
步骤 902: 启动所述调高单播功率计时器， 继续接收微基站发送的干扰指示信息； 步骤 903 : 判断所述调高单播功率计时器是否到期； 如果所述调高单播功率计时 器到期， 则执行步骤 904， 否则继续接收微基站发送的干扰指示信息；
步骤 904: 调高其为微基站配置的几乎空子帧中单播物理信道的发送功率。
其中，调高所述发送功率可以是以预定步长来调高，也可以其他公知的调高方式， 本发明实施例并不以此作为限制。
在一个实施例中， 如果所述干扰指示信息为受到宏基站的强干扰， 则在步骤 802 中，可以根据预定策略确定是否需要降低为微基站配置的几乎空子帧中单播物理信道 的发送功率。例如， 可以根据其自身的负载情况确定是否降低上述单播物理信道的发 送功率， 如果其负载不重， 则可以降低上述单播物理信道的发送功率， 如果其负载已 经很重， 例如超过预定比例或预定值， 则可以选择保持上述单播物理信道的发送功率 不变。 当然， 根据负载来确定是否降低上述单播物理信道的发送功率， 也只是本发明 实施例的一个实施方式， 在具体实施时， 也可以预先设定一些调整策略， 本发明实施 例并不以此作为限制。 在本实施例中， 降低上述单播物理信道的发送功率可以是以预定步长来降低， 也 可以其他公知的降低方式， 本发明实施例并不以此作为限制。
在本实施例中， 由于在收到微基站的多个 UE受到该宏基站的下行强干扰的干扰 指示信息时， 其调高单播功率计时器可能处于启动状态， 因此， 在本实施例中， 还需 要判断该预先设置的调高单播功率计时器是否处于启动状态， 如果是， 则关闭所述调 高单播功率计时器。其中， 该判断的步骤可以是在根据预定策略确定是否需要降低上 述单播物理信道的发送功率的步骤之前， 也即在收到上述干扰指示信息之后， 也可以 是在根据预定策略确定是否需要降低上述单播物理信道的发送功率的步骤之后，本发 明实施例并不以此作为限制。
通过本实施例的方法， 宏基站在接收到微基站发送的干扰指示信息以后， 根据该 干扰指示信息， 确定该微基站的 UE是否受到该宏基站的下行强干扰， 据此调整其为 该微基站配置的几乎空子帧中单播物理信道的下行发送功率，由此避免了其下行传输 对 pico UE的干扰， 达到了功率自适应的效果。
本发明实施例还提供了一种微基站， 如下面的实施例 7所述， 由于该微基站解决 问题的原理与实施例 5的方法类似，因此该微基站的实施可以参考实施例 5的方法的 实施， 重复之处不再赘述。
实施例 7
本发明实施例还提供了一种微基站。 图 10是该微基站的组成示意图， 请参照图 10， 该微基站包括：
接收单元 101， 其接收所述微基站覆盖范围内的多个用户设备 （UE)上报的测量 值， 所述测量值包括各个 UE接收所述微基站发送的参考信号的参考信号接收质量； 计算单元 102， 其根据所述各个 UE接收所述微基站发送的参考信号的参考信号 接收质量，计算所述 UE接收所述微基站发送的参考信号的参考信号接收质量的平均 值；
确定单元 103， 其根据所述参考信号接收质量的平均值， 确定所述 UE是否受到 宏基站的强干扰；
发送单元 104， 其向所述宏基站发送用于指示 UE是否受到宏基站的强干扰的干 扰指示信息，以便所述宏基站根据所述干扰指示信息确定其为所述微基站配置的几乎 空子帧中单播物理信道的发送功率的调整方式。 在一个实施例中， 确定单元 103具体用于在所述 UE接收所述微基站发送的参考 信号的参考信号接收质量的平均值大于等于预先设定的比较因子时，确定所述 UE受 到宏基站的强干扰。
在一个实施例中， 所述干扰指示信息通过 1比特信息指示。
在一个实施例中， 发送单元 104通过 X2接口的负载信息消息将所述干扰指示信 息发送给所述宏基站。
本实施例的微基站根据其覆盖范围的多个 UE上报的测量值， 以及预先设定的比 较因子， 判断该多个 UE是否受到宏基站的强干扰， 并将相应的干扰指示信息发送给 宏基站，以便于宏基站根据该干扰指示信息确定其为该微基站配置的几乎空子帧中单 播物理信道的下行发送功率的调整方式， 由此避免了其下行传输对 pico UE的干扰， 达到了功率自适应的效果。
本发明实施例还提供了一种宏基站， 如下面的实施例 8所述， 由于该宏基站解决 问题的原理与实施例 6的方法类似，因此该宏基站的实施可以参考实施例 6的方法的 实施， 重复之处不再赘述。
实施例 8
本发明实施例还提供了一种宏基站。 图 11 是该宏基站的组成示意图， 请参照图 11， 该宏基站包括：
接收单元 111， 其接收微基站发送的干扰指示信息， 所述干扰指示信息用于指示 所述微基站的 UE是否受到所述宏基站的强干扰；
确定单元 112， 其根据所述接收单元接收到的干扰指示信息， 确定其为所述微基 站配置的几乎空子帧中单播物理信道的发送功率的调整方式。
在一个实施例中，当所述干扰指示信息为未受到宏基站的强干扰时，确定单元 112 包括：
第一判断模块 1121， 其判断预先设置的调高单播功率计时器是否启动； 启动模块 1122， 其在所述第一判断模块 1121的判断结果为， 预先设置的调高单 播功率计时器未启动时， 启动所述调高单播功率计时器；
第二判断模块 1123， 其在所述第一判断模块 1121的判断结果为， 预先设置的调 高单播功率计时器已启动时， 判断所述调高单播功率计时器是否到期；
第一调整模块 1124， 其在所述第二判断模块 1123的判断结果为， 所述调高单播 功率计时器到期时， 调高其为该微基站配置的几乎空子帧中单播物理信道的发送功 - 在另外一个实施例中， 当所述干扰指示信息为受到宏基站的强干扰时， 确定单元 112包括：
确定模块 1125，其根据预定策略确定是否需要降低其为所述微基站配置的几乎空 子帧中单播物理信道的发送功率；
第二调整模块 1126， 其在所述确定模块 1125确定为需要降低所述单播物理信道 的发送功率时， 降低所述单播物理信道的发送功率。
在本实施例中， 确定单元 112还包括：
第三判断模块 1127， 其判断预先设置的调高单播功率计时器是否处于启动状态； 关闭模块 1128， 其在所述第三判断模块 1127的判断结果为是时， 关闭所述调高 单播功率计时器。
在本实施例中， 第一调整模块 1124和第二调整模块 1126调整其几乎空子帧的单 播物理信道的发送功率的方式， 可以是根据预定步长调整， 也可以是根据其他策略调 整， 本发明实施例并不以此作为限制。
本实施例的宏基站在接收到微基站发送的干扰指示信息以后， 根据该干扰指示信 息， 确定该微基站的 UE是否受到该宏基站的下行强干扰， 据此调整 （调高或降低） 其为该微基站配置的几乎空子帧中单播物理信道的下行发送功率，由此避免了其下行 传输对 pico UE的干扰， 达到了功率自适应的效果。
本发明实施例还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所述基站中执行实施例 1或实施例 2或实施例 5或实施例 6所述 的异构网中的功率自适应方法。
本发明实施例还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或实施例 2或实施例 5或实施例 6所述的 异构网中的功率自适应方法。
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步骤。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、 一种异构网中的功率自适应方法， 其中， 所述方法包括：
微基站接收其覆盖范围内的多个用户设备（UE )上报的测量值， 所述测量值包括 各个 UE接收所述微基站发送的参考信号的参考信号接收功率和各个 UE接收宏基站 发送的参考信号的参考信号接收功率，其中，所述宏基站为所述微基站配置了几乎空 子帧；
微基站根据所述各个 UE接收所述微基站发送的参考信号的参考信号接收功率， 计算所述 UE的数据接收功率的平均值， 根据所述各个 UE接收宏基站发送的参考信 号的参考信号接收功率，计算所述 UE接收宏基站发送的参考信号的参考信号接收功 率的平均值；
微基站向所述宏基站发送所述 UE的数据接收功率的平均值和所述 UE接收宏基 站发送的参考信号的参考信号接收功率的平均值，以便所述宏基站据此确定其为所述 微基站配置的几乎空子帧中单播物理信道的发送功率。
2、根据权利要求 1所述的方法， 其中， 微基站计算所述 UE的数据接收功率的平 均值的步骤包括：
根据所述各个 UE接收所述微基站发送的参考信号的参考信号接收功率， 计算所 述 UE接收所述微基站发送的参考信号的参考信号接收功率的平均值；
根据所述 UE接收所述微基站发送的参考信号的参考信号接收功率的平均值， 和 所述微基站的公共参考信号的发送功率， 计算所述 UE的平均路损；
根据所述 UE的平均路损， 和所述 UE的数据发送功率的平均值， 计算所述 UE 的数据接收功率的平均值。
3、 一种异构网中的功率自适应方法， 其中， 所述方法包括：
宏基站接收微基站发送的其覆盖范围内的多个 UE的数据接收功率的平均值和所 述 UE接收所述宏基站发送的参考信号的参考信号接收功率的平均值；
根据所述 UE接收所述宏基站发送的参考信号的参考信号接收功率的平均值， 和 所述宏基站的公共参考信号的发送功率，计算所述宏基站到所述微基站边缘 UE的平 均路损；
根据所述宏基站到所述微基站边缘 UE的平均路损， 和所述 UE的数据接收功率 的平均值， 确定为所述微基站配置的几乎空子帧中单播物理信道的发送功率。
4、 根据权利要求 3所述的方法， 其中， 确定为所述微基站配置的几乎空子帧中 单播物理信道的发送功率包括： 根据以下公式确定所述单播物理信道的最大发送功 -：
ΡΝ ^ΉΓ, + α,Ρ^
其中， ^为单播物理信道的发送功率， ^！ 为所述宏基站到所述微基站边缘 UE的平均路损， 为所述 UE的数据接收功率的平均值， 所述《。为预先设定的比 较因子。
5、 一种微基站， 其中， 所述微基站包括：
接收单元， 其接收所述微基站覆盖范围内的多个 UE上报的测量值， 所述测量值 包括各个 UE接收所述微基站发送的参考信号的参考信号接收功率和各个 UE接收宏 基站发送的参考信号的参考信号接收功率，其中，所述宏基站为所述微基站配置了几 乎空子帧；
计算单元， 其根据所述各个 UE接收所述微基站发送的参考信号的参考信号接收 功率， 计算所述 UE的数据接收功率的平均值， 并根据所述各个 UE接收宏基站发送 的参考信号的参考信号接收功率，计算所述 UE接收宏基站发送的参考信号的参考信 号接收功率的平均值；
发送单元， 其向所述宏基站发送所述 UE的数据接收功率的平均值和所述 UE接 收宏基站发送的参考信号的参考信号接收功率的平均值，以便所述宏基站据此确定其 为所述微基站配置的几乎空子帧中单播物理信道的发送功率。
6、 根据权利要求 5所述的微基站， 其中， 所述计算单元包括：
第一计算模块， 其根据所述各个 UE接收所述微基站发送的参考信号的参考信号 接收功率，计算所述 UE接收所述微基站发送的参考信号的参考信号接收功率的平均 值；
第二计算模块， 其根据所述 UE接收所述微基站发送的参考信号的参考信号接收 功率的平均值，和所述微基站的公共参考信号的发送功率，计算所述 UE的平均路损； 第三计算模块， 其根据所述 UE的平均路损， 和所述 UE的数据发送功率的平均 值， 计算所述 UE的数据接收功率的平均值。
7、 一种宏基站， 其中， 所述宏基站包括： 接收单元， 其接收微基站发送的其覆盖范围内的多个 UE的数据接收功率的平均 值和所述 UE接收所述宏基站发送的参考信号的参考信号接收功率的平均值；
计算单元， 其根据所述 UE接收所述宏基站发送的参考信号的参考信号接收功率 的平均值，和所述宏基站的公共参考信号的发送功率，计算所述宏基站到所述微基站 边缘 UE的平均路损；
确定单元， 其根据所述宏基站到所述微基站边缘 UE的平均路损， 和所述 UE的 数据接收功率的平均值，确定为所述微基站配置的几乎空子帧中单播物理信道的发送 功率。
8、 根据权利要求 7所述的宏基站， 其中， 所述确定单元具体用于根据以下公式 确定所述单播物理信道的最大发送功率： 其中， ^为单播物理信道的发送功率， ^！ 为所述宏基站到所述微基站边缘
UE的平均路损， 为所述 UE的数据接收功率的平均值， 所述《。为预先设定的比 较因子。
9、 一种异构网中的功率自适应方法， 其中， 所述方法包括：
微基站接收其覆盖范围内的多个用户设备（UE)上报的测量值， 所述测量值包括 各个 UE接收所述微基站发送的参考信号的参考信号接收质量；
微基站根据所述各个 UE接收所述微基站发送的参考信号的参考信号接收质量， 计算所述 UE接收所述微基站发送的参考信号的参考信号接收质量的平均值；
微基站根据所述参考信号接收质量的平均值， 确定所述 UE是否受到宏基站的强 干扰；
微基站向所述宏基站发送用于指示 UE 是否受到宏基站的强干扰的干扰指示信 息，以便所述宏基站根据所述干扰指示信息确定其为所述微基站配置的几乎空子帧中 单播物理信道的发送功率的调整方式。
10、 根据权利要求 9所述的方法， 其中， 确定所述 UE是否受到宏基站的强干扰 的步骤包括：
如果所述 UE接收所述微基站发送的参考信号的参考信号接收质量的平均值大于 等于预先设定的比较因子， 则确定所述 UE受到宏基站的强干扰。
11、根据权利要求 9所述的方法，其中，所述干扰指示信息通过 1比特信息指示。
12、根据权利要求 9或 11所述的方法， 其中， 所述干扰指示信息通过 X2接口的 负载信息消息发送给所述宏基站。
13、 一种异构网中的功率自适应方法， 其中， 所述方法包括：
宏基站接收微基站发送的干扰指示信息， 所述干扰指示信息用于指示所述微基站 的多个 UE是否受到所述宏基站的强干扰；
宏基站根据所述干扰指示信息确定其为所述微基站配置的几乎空子帧中单播物 理信道的发送功率的调整方式。
14、 根据权利要求 13所述的方法， 其中， 如果所述干扰指示信息为未受到宏基 站的强干扰，则所述确定其为所述微基站配置的几乎空子帧中单播物理信道的发送功 率的调整方式， 包括：
判断预先设置的调高单播功率计时器是否启动；
如果所述调高单播功率计时器未启动， 则启动所述调高单播功率计时器， 继续接 收微基站发送的干扰指示信息；
如果所述调高单播功率计时器已启动， 则判断所述调高单播功率计时器是否到 期；
如果所述调高单播功率计时器到期， 则调高单播物理信道的发送功率， 否则继续 接收微基站发送的干扰指示信息。
15、 根据权利要求 13所述的方法， 其中， 如果所述干扰指示信息为受到宏基站 的强干扰，则所述确定其为所述微基站配置的几乎空子帧中单播物理信道的发送功率 的调整方式， 包括：
根据预定策略确定是否需要降低其为所述微基站配置的几乎空子帧中单播物理 信道的发送功率， 如果是， 则降低其为所述微基站配置的几乎空子帧中单播物理信道 的发送功率。
16、 根据权利要求 15所述的方法， 其中， 在根据预定策略确定是否需要降低其 为所述微基站配置的几乎空子帧中单播物理信道的发送功率的步骤之前或之后，所述 方法还包括：
判断预先设置的调高单播功率计时器是否处于启动状态； 如果是， 则关闭所述调 高单播功率计时器。
17、 一种微基站， 其中， 所述微基站包括： 接收单元， 其接收所述微基站覆盖范围内的多个用户设备 （UE) 上报的测量值， 所述测量值包括各个 UE接收所述微基站发送的参考信号的参考信号接收质量； 计算单元， 其根据所述各个 UE接收所述微基站发送的参考信号的参考信号接收 质量， 计算所述 UE接收所述微基站发送的参考信号的参考信号接收质量的平均值； 确定单元， 其根据所述参考信号接收质量的平均值， 确定所述 UE是否受到宏基 站的强干扰；
发送单元， 其向所述宏基站发送用于指示 UE是否受到宏基站的强干扰的干扰指 示信息，以便所述宏基站根据所述干扰指示信息确定其为所述微基站配置的几乎空子 帧中单播物理信道的发送功率的调整方式。
18、 根据权利要求 17 所述的微基站， 其中， 所述确定单元具体用于在所述 UE 接收所述微基站发送的参考信号的参考信号接收质量的平均值大于等于预先设定的 比较因子时， 确定所述 UE受到宏基站的强干扰。
19、 根据权利要求 17所述的微基站， 其中， 所述干扰指示信息通过 1 比特信息 指示。
20、 根据权利要求 17或 19所述的微基站， 其中， 所述发送单元通过 X2接口的 负载信息消息将所述干扰指示信息发送给所述宏基站。
21、 一种宏基站， 其中， 所述宏基站包括：
接收单元， 其接收微基站发送的干扰指示信息， 所述干扰指示信息用于指示所述 微基站的多个 UE是否受到所述宏基站的强干扰；
确定单元， 其根据所述接收单元接收到的干扰指示信息， 确定其为所述微基站配 置的几乎空子帧中单播物理信道的发送功率的调整方式。
22、 根据权利要求 21 所述的宏基站， 其中， 当所述干扰指示信息为未受到宏基 站的强干扰时， 所述确定单元包括：
第一判断模块， 其判断预先设置的调高单播功率计时器是否启动；
启动模块， 其在所述第一判断模块的判断结果为， 预先设置的调高单播功率计时 器未启动时， 启动所述调高单播功率计时器；
第二判断模块， 其在所述第一判断模块的判断结果为， 预先设置的调高单播功率 计时器已启动时， 判断所述调高单播功率计时器是否到期；
第一调整模块， 其在所述第二判断模块的判断结果为， 所述调高单播功率计时器 到期时， 调高所述宏基站为所述微基站配置的几乎空子帧中单播物理信道的发送功 -
23、 根据权利要求 21 所述的宏基站， 其中， 当所述干扰指示信息为受到宏基站 的强干扰时， 所述确定单元包括：
确定模块， 其根据预定策略确定是否需要降低其为所述微基站配置的几乎空子帧 中单播物理信道的发送功率；
第二调整模块， 其在所述确定模块确定为需要降低所述单播物理信道的发送功率 时， 降低所述单播物理信道的发送功率。
24、 根据权利要求 23所述的宏基站， 其中， 所述确定单元还包括：
第三判断模块， 其判断预先设置的调高单播功率计时器是否处于启动状态； 关闭模块， 其在所述第三判断模块的判断结果为是时， 关闭所述调高单播功率计 时器。
25、 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 在所述基站中执行权利要求 1-4、 9-16任一项所述的异构网中的功率自适应方法。
26、 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 机在基站中执行权利要求 1-4、 9-16任一项所述的异构网中的功率自适应方法。
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