WO2014036905A1 - 一种基站、终端及其功率控制方法 - Google Patents

一种基站、终端及其功率控制方法 Download PDF

Info

Publication number
WO2014036905A1
WO2014036905A1 PCT/CN2013/082458 CN2013082458W WO2014036905A1 WO 2014036905 A1 WO2014036905 A1 WO 2014036905A1 CN 2013082458 W CN2013082458 W CN 2013082458W WO 2014036905 A1 WO2014036905 A1 WO 2014036905A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
terminal
transmission power
data
user terminal
Prior art date
Application number
PCT/CN2013/082458
Other languages
English (en)
French (fr)
Inventor
陈侃浩
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP13834862.8A priority Critical patent/EP2894898B1/en
Priority to US14/425,008 priority patent/US9686753B2/en
Publication of WO2014036905A1 publication Critical patent/WO2014036905A1/zh
Priority to IN2482DEN2015 priority patent/IN2015DN02482A/en
Priority to HK15107358.4A priority patent/HK1206906A1/zh

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24Cell structures
    • H04W16/28Cell structures using beam steering
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • H04W52/244Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/245TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account received signal strength
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a base station, a terminal, and a power control method thereof. Background technique
  • BSs base stations
  • User Equipment User Equipment
  • the base station when transmitting a data signal to a user terminal, the base station sets a transmission power value according to the coverage of the base station to perform signal transmission, and then adjusts the data power through road test and user terminal feedback.
  • the main purpose of the embodiments of the present invention is to provide a base station, a terminal, and a power control method thereof, which can reduce the data interference strength of the base station to the terminal to which the neighboring base station belongs.
  • the embodiment of the present invention provides a power control method for a base station, which is applied to a base station, and when the base station sends information to a user terminal, the method includes: Obtaining a first transmit power for transmitting data information to the user terminal;
  • the judgment result is greater than zero, reducing the first transmit power to the second transmit power, so that when the second transmit power data information is used, the second data interference strength of the terminal to which the neighboring base station belongs does not exceed The interference threshold.
  • the embodiment of the present invention further provides a power control method for a terminal, which is applied to a terminal, and when the terminal sends information to the working base station, the method includes:
  • the embodiment of the invention further provides a base station, where the base station includes:
  • a first transmitting unit configured to transmit a first pilot signal to a user terminal
  • a first receiving unit configured to receive a feedback signal sent by the user terminal and responsive to the first pilot signal
  • a first processing chip connected to the first transmitting unit and the first receiving unit, configured First, based on the first pilot signal and the feedback signal, obtaining a ground noise of the user terminal receiving the data information and a first spatial loss when transmitting the information to the user terminal, and then based on the noise floor and the first Determining, by a spatial loss, a first transmit power for transmitting data information to the user terminal, and then determining, according to the first transmit power, a first data interference strength to a terminal to which the neighboring base station belongs, and subsequently determining the first data interference strength Whether the difference from the interference threshold is greater than zero, obtaining a judgment result, and finally, if the judgment result is greater than zero, reducing the first transmit power to the second transmit power, so that when the data information is sent by the second transmit power, The second data interference strength of the terminal to which the neighboring base station belongs does not exceed the interference threshold.
  • the embodiment of the invention further provides a user terminal, where the user terminal includes:
  • the second receiving unit is configured to receive the access signal strength information sent by the working base station, and transmit the first spatial loss of the information to the working base station;
  • the second processing chip is connected to the second receiving unit, and configured to first determine, according to the first spatial loss and the strength of the access signal in the access signal strength information, to send data information to the working base station. a first transmit power, and then obtaining a data interference strength to the neighboring base station of the working base station according to a third spatial isolation degree from the neighboring base station of the working base station and the first transmit power, and then determining the data annoyance strength Whether the difference from the interference threshold is greater than zero, obtaining a judgment result, if the judgment result is greater than zero, reducing the first transmit power to the second transmit power, so that when the data information is sent by the second transmit power, The second data interference strength of the neighboring base station of the working base station does not exceed the interference threshold;
  • a second transmitting unit coupled to the second processing chip, configured to transmit data information to the working base station at the second transmit power.
  • the base station when transmitting data information to the user terminal, the base station obtains a first transmit power to obtain a data signal transmitted by the first transmit power, and the base station pairs the adjacent base.
  • the interference of the terminal to which the station belongs reduces the transmission power of the base station according to the maximum interference threshold allowed, and solves the technical problem that the base station interferes with the terminal to which the adjacent base station belongs to the terminal in the prior art, so that the terminal cannot receive the data signal normally, and the phase is improved.
  • the downlink communication quality of the neighboring base station and the terminal to which the neighboring base station belongs are examples of the base station.
  • the user terminal When the user terminal sends data information to the base station, it not only considers the access signal requirements of the base station but also adjusts the transmit power of the user terminal according to the interference threshold of the neighboring base station of the base station, if the first transmit power of the user terminal is If the interference of the neighboring base station is too strong, the transmission power of the neighboring base station is reduced, the interference of the user terminal to the neighboring base station is reduced, and the technical problem that the user terminal interferes too strongly with the adjacent base station in the prior art is solved.
  • the neighboring base station can receive a stronger data signal sent by its terminal, thereby improving the uplink communication quality of the neighboring base station and its terminal.
  • FIG. 1 is a flowchart of power control of a base station according to Embodiment 1 of the present invention.
  • FIG. 2 is a flowchart of determining a transmit power of a first pilot signal according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic diagram of a line array antenna according to Embodiment 1 of the present invention
  • FIG. 4 is a schematic diagram of a garden array antenna according to Embodiment 1 of the present invention.
  • FIG. 5 is a flowchart of power control of a terminal with the assistance of a core network according to Embodiment 2 of the present invention
  • FIG. 6 is a structural diagram of a base station according to Embodiment 3 of the present invention.
  • FIG. 7 is a structural diagram of a terminal according to Embodiment 4 of the present invention. detailed description
  • the present power control method is not limited to the application in the indoor base station and the terminal, but also can be applied to the micro station and the macro station, as long as the indoor base station and the indoor base station mentioned in the present invention are used by those skilled in the art.
  • Other base stations and terminals that the terminal can think of, All are within the scope of the invention to be protected.
  • the base station When the base station sends the data information to the user terminal for downlink communication, first, according to the related parameter information, such as the spatial loss obtained by the road test, the noise floor when the user terminal receives the data information, etc., it is determined that the base station sends the data signal to the user terminal, that is, the downlink.
  • the related parameter information such as the spatial loss obtained by the road test, the noise floor when the user terminal receives the data information, etc.
  • the base station listens to obtain the direction angle and spatial isolation between the terminal to which the neighboring base station belongs and itself, and based on the first transmit power determined in the first step, when the data signal is transmitted at the first power, The data interference strength of the terminal to which the neighboring base station belongs; subsequently determining whether the data interference strength exceeds the interference threshold, if it is indicated that transmitting the data signal at the first transmission power will cause the downlink communication quality of the neighboring base station and its terminal to deteriorate or even fail to communicate normally; The base station reduces its actual transmit power, thereby reducing the interference to the downlink communication between the neighboring base station and the terminal to which the neighboring base station belongs, and improving the downlink communication quality between the neighboring base station and the terminal to which the neighboring base station belongs.
  • the maximum transmit power is determined based on the same idea of the downlink communication, and when the user terminal obtains the data signal with the maximum transmit power based on the maximum transmit power, the neighboring base station of the base station is used. Data interference strength, and then determine whether the data interference strength exceeds the maximum endurance of the neighboring base station, that is, the interference threshold. If the user terminal exceeds the interference threshold, the actual transmission power is adjusted, and the uplink communication between the neighboring base station and its terminal is reduced. Interference, improving the uplink communication quality of neighboring base stations and their terminals.
  • a first embodiment of the present invention provides a power control method for a base station, which is applied to a base station.
  • the method includes:
  • S102 Determine, according to the first transmit power, a first data stem to a terminal to which the neighboring base station belongs. Disturbance intensity
  • S103 Determine whether a difference between the first data interference strength and an interference threshold is greater than zero, and obtain a determination result
  • S104 If the determination result is greater than zero, reduce the first transmit power to the second transmit power, so that when the data information is transmitted by using the second transmit power, the second data interference of the terminal to which the neighboring base station belongs The intensity does not exceed the interference threshold.
  • the base station in order to obtain a first transmit power for transmitting data information to the user terminal, the base station usually needs to transmit a pilot signal for road test and test communication to detect between the base station itself and the user terminal to be communicated.
  • 10W power transmission data signal often because of space loss, the user terminal can only receive data signals below 10W, such as 9.5W, 8W, or even 6W, and the electronic equipment of the user terminal will generate some data when receiving the data signal.
  • the noise is the noise floor, and the data signal transmitted by the receiving base station is also lost. Therefore, by transmitting the first pilot signal to obtain the first spatial loss and the noise floor of the user terminal, the base station can effectively help the base station analyze the communication environment, and improve the determination. The accuracy of a transmit power.
  • the base station of the embodiment of the invention determines itself and its neighboring base stations
  • the first data interference strength of the associated terminal is used to determine its impact on the entire communication environment. After the completion of S102, proceed to S103: determining whether the difference between the first data interference strength and the interference threshold is greater than zero, and obtaining a determination result.
  • the interference intensity I UE i is compared, the maximum value I UE IMAX is obtained , and the maximum allowable interference threshold I and the terminal i are calculated. Whether the difference of UE MAX (IUEMAX-I ⁇ MAX) is greater than 0, the specific judgment results include:
  • the first case the judgment result is no, that is, (I UE IMAX - I UE MAX ) ⁇ 0 or no terminal i belongs to the neighboring base station, indicating that the base station transmitting the data signal with the first transmission power P DMAX j does not affect the terminal i
  • P D j P DMAX j.
  • the judgment result is yes, that is, (I UE IMAX - I UE MAX ) > 0, indicating that the base station transmitting the data signal at the first transmission power P DMAX j at this time affects the normal communication of the terminal i.
  • the embodiment of the present invention reduces the data interference strength of the base station to the terminal i of the neighboring base station, so as to improve the communication quality between the neighboring base station and the terminal i to which it belongs.
  • the step S104 is performed.
  • S104 If the determination result is greater than zero, reduce the first transmit power to the second transmit power, so that when the data information is transmitted by using the second transmit power, the second data interference of the terminal to which the neighboring base station belongs The intensity does not exceed the interference threshold.
  • the base station after receiving the feedback signal of the user terminal response, obtains the second transmit power based on the feedback signal after receiving the feedback signal of the user terminal response. Parameter information.
  • the parameter information specifically includes: a beamforming gain G BF j when the signal is transmitted, a bottom noise of the user terminal receiving the data information, a first spatial loss PLj when the information is sent to the user terminal, and the user terminal
  • the second transmit power of the data information sent to the user terminal that is, the actual transmit power of the working base station to the user terminal j
  • the second transmit power P D j can be obtained by the following formula: ( ( I UE Li-I UE MAX )
  • the second transmit power can also be:
  • the second transmit power is not limited to the reduction (I UE iMAX -I UE MAX ), and may also be reduced by one ratio (I UE iMAX -I UE M Ax ) Large value. It is assumed that the user terminal j requires a minimum of 30 W for the received data signal strength, the base station can transmit a first transmit power of 45 W, and the 45 W transmit data signal exceeds the interference threshold by 5 W, and the second transmit power can be reduced to 40 W. Any value between 30W.
  • an embodiment of the present invention provides a first guide.
  • a method of third transmit power of a frequency signal comprising:
  • S201 Obtain at least one spatial isolation between the base station and a neighboring base station.
  • S202 Determine whether a minimum first spatial isolation of the at least one spatial isolation is greater than an isolation threshold, and obtain a second determination result
  • the working base station monitors the neighboring base stations to obtain the pilot signal strength R BS i of the neighboring base station, and the interference needs to be filtered out for the calculation of the accurate R BS i as follows: If the received antenna receives the same antenna Frequency k energy is Where R BS k is the energy of the pure pilot k, N k is the interference superimposed on the pilot k, and the true value of the pilot k is P k , then according to the formula: The pure pilot signal strength R BS i of the neighboring base station i is obtained, since the interference superimposed on K is summed to zero after being summed with the pilot true value.
  • the pilot transmit power T BS i of the neighboring base station is intercepted, because the base station and the neighboring base station may have a certain distance to generate a certain loss, so the pilot transmit power of the neighboring base station is often better than that obtained by the base station.
  • the pilot signal strength R ⁇ is large, and thus the spatial isolation PL BS — BS i between the working base station and its neighboring base stations is calculated as: since there may be no base stations adjacent to the base station, or there may be more than one, When the space isolation is infinite when there is no base station adjacent to the base station, the smallest one of the first spatial isolations PL BS - BS iMIN is determined at this time, because the space isolation between the base station and its adjacent base stations is larger, mutual The interference between the two is smaller. If the minimum first spatial isolation is greater than the minimum isolation allowed, that is, the isolation threshold, then all neighboring base stations are larger than the isolation threshold.
  • step S201 can also be performed with the assistance of the core network of the base station:
  • the core network can control the idle base station to enter the interfering base station listening mode one by one, so as not to enter the base station listening mode at the same time, resulting in missed detection.
  • the core network may collect the latitude and longitude, the cell ID, the working frequency, and the pilot transmit power of the base station, and according to the latitude and longitude of each base station or the network segment where it is located, when it first accesses the core network or initiates an inquiry, Broadcast the cell ID and pilot transmit power (r ss ; ) of the surrounding base station to shorten the listening time.
  • the base station After receiving the information, the base station can perform monitoring only in the idle subframe of the non-broadcast subframe, so that the transmission of the self-synchronization signal and the broadcast subframe can be not affected.
  • the core network may also collect pilot interference alarms of each base station, neighboring base station IDs, and their spatial isolation P ⁇ - with neighboring base stations. The core network can then send the spatial isolation information P ⁇ - to the base station.
  • Step S202 determining that the smallest first spatial isolation in the at least one spatial isolation is If it is greater than the isolation threshold, the second judgment result is obtained. There are two situations at this point:
  • the judgment result is no, that is, the PL BS - BS iMIN is smaller than the isolation threshold PL BS - BS T or R BS i exceeds the threshold R BS T , indicating that the mutual interference between the base station and its neighboring base station is large at this time Lead to a decline in the quality of communication with each other.
  • the base station will automatically alarm, which may be an audible and visual alarm, or a background alarm, so that the home base station or antenna can find a suitable placement position again, and the outdoor macro station can change the direction of transmitting/receiving data signals.
  • the interfering base stations may be sorted according to the pilot signal strength R BS i of each interfering base station, and the neighboring base stations exceeding the threshold are obtained, and the pilot signal strength exceeds the threshold. finding a base station, obtains the azimuth angle ⁇ between the fourth and the neighboring base station exceeds a threshold ⁇ .
  • the method for obtaining the azimuth is as follows: Let the signal of the base station received by the antenna k be exp( % ), where A is the signal amplitude and is the signal phase. Due to the antenna sub-array antenna and the array antenna of the base station, their azimuth calculation methods are different, which will be separately described below.
  • the position of the base station or the antenna may be moved according to the reverse direction of the fourth azimuth angle ⁇ or other directions, and the base station in the direction is reduced. Interference between them and their neighboring base stations.
  • steps S201 and S202 are restarted, and after the first spatial isolation is greater than the isolation threshold, step S203 is performed to obtain a third transmit power of the first pilot signal.
  • the base station transmits the first pilot signal to the user terminal by using the third transmit power, and then receives the response sent by the user terminal to the first pilot. a feedback signal of the signal; then the base station can obtain the first transmit power according to the feedback signal.
  • the specific method for the base station to obtain the first transmit power is: acquiring the first pilot signal strength RSRPj and the pilot signal quality RSR (3 ⁇ 4) received by the user terminal j included in the feedback signal. According to the first pilot signal strength RSRPj and the guide The frequency signal quality RSRQj is calculated, and the bottom noise Nlj of the user terminal j and the first spatial loss PLj between the base station and the user terminal j are calculated, and the formula is as follows:
  • the demodulation threshold SNR Dh and the beamforming gain G BF j of the downlink highest order modulation of the data information are sent to the user terminal j, and the maximum transmission first transmission power of the base station to the user terminal j is obtained.
  • P leg X j NIj+SNR Dh -G BF j+PLj.
  • determining, according to the first transmit power, a first data interference strength of a terminal to which the adjacent base station belongs is as follows:
  • the method of the two azimuth is the same as the method of obtaining the fourth azimuth e BS i of the neighboring base station described above, and the description thereof will not be repeated here.
  • a third- party bit angle ( ⁇ ⁇ ⁇ ⁇ ⁇ ”) of the terminal i to which the adjacent base station belongs is deviated from the beamforming direction.
  • the embodiment of the present invention uses beamforming technology, by phase-weighting the correlation of the output signals of the plurality of antennas, the signals are in-phase superimposed in the direction of the first azimuth angle, thereby realizing the gain of the signal and forming in other directions. Phase cancellation, reducing signal interference to other terminals, so the signal will have a large loss on the third- party angular angle ( ⁇ ⁇ ⁇ ⁇ ⁇ ” deviating from the beamforming direction.
  • a first radiation loss L ( ⁇ ⁇ ⁇ ⁇ ⁇ ”) from the third- party position angle ( ⁇ ⁇ ⁇ ⁇ ⁇ ”) of the beamforming direction is obtained.
  • the embodiment of the present invention not only considers the second spatial isolation degree PL BS - UE i of the terminal i to which the base station belongs and its neighboring base station, but also deviates from the beamforming direction.
  • the loss in different directions is different, and the data interference intensity is accurately calculated according to different radiation losses in different azimuths of the beamforming radiation azimuth map.
  • the neighboring base station belongs to End First data interference strength of terminal i
  • the data interference strength I UE i may also be completed with the assistance of the core network: first, the base station transmits the probe signal at the first transmission power, and then receives the neighboring base station based on the probe signal sent by the core network to which the base station belongs The first data interference strength of the associated terminal. Because if the terminal i to which a neighboring base station belongs is subjected to interference exceeding the maximum allowable interference threshold I UE MAX, the base station cell ID and its interference signal strength I UE i that interfere with it can be reported to the core network by the base station to which the neighboring base station belongs, and the core network receives After the alarm, the interference signal strength I UE i is reported to the base station to which the cell ID belongs.
  • the base station since the base station reduces the transmission power of the actual data signal, the data interference to the terminal i is reduced, so that the communication quality of the neighboring base station and its associated terminal i is improved; and at the same time, the transmission power of the base station is reduced.
  • the base station transmits a signal using beamforming technology, and has better beamforming gain in the beamforming direction, so that the user terminal can receive a larger power.
  • the data signal improves data traffic and improves communication quality.
  • an embodiment of the present invention provides a power control method for a terminal, which is applied to a terminal, and when the terminal sends information to a working base station, the method includes:
  • S501 Receive access signal strength information sent by the working base station.
  • the access signal strength R AT in the access signal strength information includes a demodulation threshold SNR AT of the working base station access signal and a bottom noise NI BS measured by the working base station.
  • R AT SNR AT + NI BS .
  • a communication request is sent, and when the working terminal receives the communication request, the working terminal sends the access signal strength information of the working base station to the user terminal; or the user terminal directly monitors The self-access signal strength requirement signal broadcast by the working base station receives the access signal strength information of the working base station.
  • S502 Obtain a first spatial loss of sending information to the working base station.
  • the user terminal operates in the base station establishes a communication connection, the work station sends a pilot signal to the user terminal simultaneously and broadcasts its pilot signal transmit power T BS 0, since the signal will during transmission There is a loss so that the actual pilot signal strength RSRPj received by the user terminal is higher than the pilot signal transmission power T BS transmitted by the working base station. small.
  • S503 Determine, according to the first spatial loss and the strength of the access signal in the access signal strength information, a first transmit power for transmitting data information to the working base station.
  • the working base station Because the beamforming technology is adopted in the embodiment of the present invention, the working base station generates the reception combining gain G RC j when receiving the data signal sent by the user terminal, so the user terminal can transmit the data signal of a large power to ensure that the working base station can The high quality data signal is successfully received.
  • the demodulation threshold SNR uh , the reception combining gain G RC j , the first spatial loss PLj, and the noise floor NI of the working base station obtained from the access signal strength according to the uplink highest order modulation of the data signal transmitted by the user terminal to the working base station.
  • S504 Obtain a second spatial isolation between the terminal and a neighboring base station of the working base station.
  • the signal sent by the user terminal may cause data interference to the neighboring base station of the working base station.
  • the embodiment of the present invention obtains the user terminal j and the working base station.
  • the second spatial isolation between adjacent base stations further determines the data interference strength.
  • the user terminal j monitors the third pilot signal power RSRP of each neighboring base station and calculates the user terminal j and each neighboring base station according to the actual pilot transmit power T BS i of each neighboring base station monitored by the received working base station.
  • the user terminal j can be based on the first transmit power P UMAX j and the second spatial isolation.
  • the data interference strength of the user terminal to the neighboring base station of the working base station is the data interference strength of the user terminal to the neighboring base station of the working base station
  • I BS ji can also use the core network for interference coordination:
  • the interference of I BS MAX can report to the core network the base station i cell ID, its associated terminal pilot and its interference signal strength I BS ji that interfere with it. After receiving the alarm, the core network reports the interference terminal pilot and its data interference strength I BS ji to the base station i to which the cell ID belongs, and the working base station i sends the data interference strength ⁇ ⁇ exceeding the maximum interference threshold to the user after receiving the notification. terminal.
  • S506 Determine whether the difference between the data interference strength and the interference threshold is greater than zero, and obtain a judgment result.
  • the user terminal can compare the interference strengths I BS ji to obtain The maximum value I BS j iMAX , and calculate its difference from the maximum allowable interference threshold I BS MAX of the neighboring base station I BS j IMAX -I BS MAX , determine the data interference strength ⁇ ⁇ and the interference threshold
  • the user terminal may obtain the receive merge gain G R q when the working base station receives the data signal, Based on the received combined gain G Rq , the difference
  • the second transmit power of the data signal actually transmitted to the working base station is not limited to subtracting a maximum data interference intensity from the first transmit power.
  • the difference between the interference thresholds can also be subtracted by a value greater than the difference. It is assumed that the minimum data signal strength required by the user terminal to the working base station is 40 W, the maximum first emissivity determined by the user terminal is 50 W, and the difference between the maximum data interference strength and the interference threshold is 5 W, and then the user terminal actually connects to the working base station.
  • the second transmit power of the transmitted data signal can be reduced to 45 W, or can be reduced to a value between 45 W and 40 W of 43 W, 42 W, and the like.
  • the user terminal When the user terminal sends a data signal to the working base station, it not only considers the access signal strength requirement of the working base station, but also reduces the data interference of the data signal sent by itself to the neighboring base station of the working base station, and solves the data interference strength. Excessive technical problems improve the overall communication environment and improve the quality of uplink communication between neighboring base stations and their associated terminals.
  • the embodiment of the invention also adopts a beamforming technology, so that the user terminal can reduce the receiving combining gain according to the working base station.
  • the second transmit power of the data signal actually transmitted by itself can save power and reduce interference.
  • an embodiment of the present invention provides a base station, where the base station includes:
  • the first transmitting unit 601 is configured to transmit a first pilot signal to the user terminal;
  • the first receiving unit 603 is configured to receive a feedback signal sent by the user terminal and responsive to the first pilot signal;
  • the first processing chip 602 is connected to the first transmitting unit 601 and the first receiving unit 603, and is configured to: first obtain, according to the first pilot signal and the feedback signal, the bottom of the user terminal to receive data information. Noise and a first spatial loss when transmitting information to the user terminal, and then determining a first transmit power for transmitting data information to the user terminal based on the noise floor and the first spatial loss, and then based on the Determining, by a transmit power, a first data interference strength of the terminal to which the neighboring base station belongs, and subsequently determining whether the difference between the first data interference strength and the interference threshold is greater than zero, obtaining a judgment result, and finally if the judgment result is greater than zero, subtracting
  • the first transmit power to the second transmit power is small, so that when the data information is sent by the second transmit power, the second data interference strength of the terminal to which the neighboring base station belongs does not exceed the interference threshold.
  • the first transmitting unit 601, the first receiving unit 603, and the first processing chip 602 may be implemented by a central processing unit (CPU), a digital signal processor (DSP), or a programmable gate array ( FPGA, Field - Programmable Gate Array) implementation.
  • CPU central processing unit
  • DSP digital signal processor
  • FPGA Field - Programmable Gate Array
  • the base station in this embodiment is a virtual device corresponding to the method, the specific working process is not specifically described.
  • a user terminal where the user terminal includes:
  • the second receiving unit 701 is configured to receive the access signal strength information sent by the working base station, and transmit the first spatial loss of the information to the working base station;
  • the second processing chip 702 is connected to the second receiving unit 701, and configured to: first determine, according to the first spatial loss and the strength of the access signal in the access signal strength information, to send data to the working base station And obtaining a data interference strength of the neighboring base station of the working base station according to a third spatial isolation degree of the neighboring base station of the working base station and the first transmit power, and then determining the data.
  • the difference between the annoyance intensity and the interference threshold is greater than zero, obtaining a judgment result, if the judgment result is greater than zero, reducing the first transmission power to the second transmission power, so that when the data information is sent by the second transmission power And the second data interference strength of the neighboring base station of the working base station does not exceed the interference threshold;
  • the second transmitting unit 703 is connected to the second processing chip 702 and configured to transmit data information to the working base station by using the second transmit power.
  • the second receiving unit 701, the second processing chip 702, and the second transmitting unit 703 may be implemented by a CPU, a DSP or an FPGA in the user terminal.
  • the user terminal in this embodiment is a virtual device corresponding to the method, the specific working process is not specifically described.
  • the base station when the base station sends data information to the user terminal, the base station determines the data interference strength of the terminal to which the neighboring base station belongs when the data signal is transmitted by using the first transmit power by determining a first transmit power. If the data interference strength exceeds the interference threshold, the beamforming technology is used to adjust the actual transmit power of the base station to reduce the interference strength, and solve the technical problem that the base station in the prior art causes excessive interference to the terminal to which the neighboring base station belongs. Since the data interference strength is reduced, the terminal to which the neighboring base station belongs can better receive the data signal transmitted by the neighboring base station, thereby improving the downlink communication quality of the neighboring base station and its terminal.
  • the base station monitors the spatial isolation of its neighboring base station before transmitting the pilot signal, and detects the specific location of the neighboring base station beyond the isolation threshold, it helps the base station find the joint. Appropriate location or signal receiving/transmitting direction avoids mutual interference between the base station and neighboring base stations and improves the communication quality of the base station.
  • the user terminal box base station transmits the data information
  • not only the access signal requirements of the base station but also the interference threshold of the neighboring base station of the base station are adjusted, and the first transmit power of the user terminal is adjusted. If the interference of the neighboring base station is too strong, the transmission power of the neighboring base station is reduced to reduce the interference to the neighboring base station, and the technical problem of excessive interference of the prior art is solved, so that the neighboring base station can be better.
  • Receiving the data signal sent by the terminal improving the uplink communication quality of the neighboring base station and its terminal.
  • a beamforming technique is adopted. Since the beamforming gain enables the user terminal to receive a high-power data signal weighted by a plurality of identical phases, the traffic is increased, and at the same time, the base station utilizes beamforming gain to The smaller power transmits the data signal, so that the power can be better saved; correspondingly using the receive combining gain of the beamforming technology, the base station can receive the higher quality data signal, so the user terminal can transmit the lower power data signal to the base station. , further reducing data interference.
  • the base station when transmitting data information to a user terminal, determines the data interference strength of the terminal to which the neighboring base station belongs when the data signal is transmitted by using the first transmit power by determining a first transmit power. If the data interference strength exceeds the interference threshold, the beamforming technology is used to adjust the actual transmit power of the base station to reduce the interference strength, which solves the technical problem that the base station in the prior art causes excessive interference to the terminal to which the neighboring base station belongs.

Landscapes

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

Abstract

本发明公开了一种基站、终端及其功率控制方法,其中一种基站的功率控制方法,当所述基站发送信息到用户终端时,所述方法包括:获得向所述用户终端发送数据信息的第一发射功率;基于所述第一发射功率确定对相邻基站所属终端的第一数据干扰强度;判断所述第一数据干扰强度与干扰门限的差值是否大于零,获得判断结果;若所述判断结果大于零,减小所述第一发射功率至第二发射功率,使得以所述第二发射功率发射数据信息时,对所述相邻基站所属终端的第二数据干扰强度不超过所述干扰门限,解决了现有技术中基站发射的数据信号时过度的干扰其他终端的技术问题。

Description

一种基站、 终端及其功率控制方法 技术领域
本发明涉及无线通信领域, 特别一种基站、 终端及其功率控制方法。 背景技术
随着无线通信的发展, 无线信号的覆盖率变得越来越重要, 同时, 由 于不同的运营商、 不同通信目的基站(Base Station, 简称 BS )数目不断的 增加, 用户终端 (User Equipment, 简称 UE ) 的数目也在不断的增加。
现有技术中基站在发射数据信号给用户终端时, 根据基站的覆盖范围 设一个发射功率值进行信号发射 , 随后通过路测及用户终端反馈等对数据 功率进行调整。
发明人在实现本申请实施例中技术方案的过程中, 发现现有技术中存 在如下技术问题: 基站在发射数据信号给用户终端时, 由于基站确定数据 信号的发射功率时只考虑基站自身的覆盖范围和用户终端的反馈情况, 所 以基站的发射功率往往较大, 此时大功率的数据信号会对基站周围的相邻 基站所属终端产生较强的干扰, 会导致相邻基站所属终端的通信质量下降, 甚至无法正常通信。 发明内容
有鉴于此, 本发明实施例的主要目的在于提供一种基站、 终端及其功 率控制方法, 能减 '』、基站对相邻基站所属终端的数据干扰强度。
为达到上述目的, 本发明实施例的技术方案是这样实现的:
本发明实施例提供了一种基站的功率控制方法, 应用于基站中, 当所 述基站发送信息到用户终端时, 所述方法包括: 获得向所述用户终端发送数据信息的第一发射功率;
基于所述第一发射功率确定对相邻站所属终端的第一数据干扰强度; 判断所述第一数据干扰强度与干扰门限的差值是否大于零, 获得判断 结果;
若所述判断结果大于零, 减小所述第一发射功率至第二发射功率, 使 得以所述第二发射功率数据信息时, 对所述相邻基站所属终端的第二数据 干扰强度不超过所述干扰门限。
同时, 本发明实施例还提供了一种终端的功率控制方法, 应用在终端 中, 当所述终端发送信息给工作基站时, 所述方法包括:
接收所述工作基站发送的接入信号强度信息;
获得向所述工作基站发送信息的第一空间损耗;
基于所述第一空间损耗及所述接入信号强度信息中的接入信号强度, 确定向所述工作基站发送数据信息的第一发射功率;
获得所述终端与所述工作基站的相邻基站之间的第二空间隔离度; 根据所述第二空间隔离度及第一发射功率 , 获得对所述相邻基站的数 据干扰强度;
判断所述数据干扰强度与干扰门限的差值是否大于零, 获得判断结果; 若所述判断结果大于零, 减小所述第一发射功率至第二发射功率, 使 得以所述第二发射功率发射数据信息时 , 对所述相邻基站的第二数据干扰 强度不超过所述干扰门限。
本发明实施例还提供了一种基站, 所述基站包括:
第一发射单元, 配置为发射第一导频信号给用户终端;
第一接收单元, 配置为接收所述用户终端发送的响应所述第一导频信 号的反馈信号;
第一处理芯片, 与所述第一发射单元及所述第一接收单元相连, 配置 为首先基于所述第一导频信号和反馈信号, 获得所述用户终端接收数据信 息的底噪及向所述用户终端发送信息时的第一空间损耗, 然后基于所述底 噪和所述第一空间损耗, 确定向所述用户终端发送数据信息的第一发射功 率, 接着基于所述第一发射功率确定对相邻基站所属终端的第一数据干扰 强度, 随后判断所述第一数据干扰强度与干扰门限的差值是否大于零, 获 得判断结果, 最后若所述判断结果大于零, 减小所述第一发射功率至第二 发射功率, 使得以所述第二发射功率发送数据信息时, 对所述相邻基站所 属终端的第二数据干扰强度不超过所述干扰门限。
本发明实施例还提供了一种用户终端, 所述用户终端包括:
第二接收单元, 配置为接收工作基站发送的接入信号强度信息, 及向 所述工作基站发送信息的第一空间损耗;
第二处理芯片, 与所述接第二收单元相连, 配置为首先根据所述第一 空间损耗及所述接入信号强度信息中的接入信号强度, 确定向所述工作基 站发送数据信息的第一发射功率, 然后根据与所述工作基站相邻基站的第 三空间隔离度及所述第一发射功率, 获得对所述工作基站相邻基站的数据 干扰强度, 接着判断所述数据烦扰强度与干扰门限的差值是否大于零, 获 得判断结果, 若所述判断结果大于零, 减小所述第一发射功率至第二发射 功率, 使得以所述第二发射功率发送数据信息时, 对所述工作基站相邻基 站的第二数据干扰强度不超过所述干扰门限;
第二发射单元, 与所述第二处理芯片相连, 配置为以所述第二发射功 率发射数据信息给所述工作基站。
本发明实施例中的上述一个或多个技术方案, 至少具有如下一种或多 种技术效果:
1、 在本发明实施例中, 基站在向用户终端发送数据信息时, 通过确定 一个第一发射功率, 获得以第一发射功率发射数据信号时, 基站对相邻基 站所属终端的干扰大小, 根据允许的最大干扰门限减小基站的发射功率, 解决了现有技术中基站对相邻基站所属终端的干扰使所属终端无法正常接 收数据信号的技术问题, 提高了相邻基站与相邻基站所属终端的下行通信 质量。
2、 当用户终端向基站发送数据信息时, 不仅考虑所属基站接入信号要 求也会根据所述基站相邻基站的干扰门限, 调整用户终端自身的发射功率, 若用户终端的第一发射功率对所述相邻基站的干扰过强, 则会调小自身的 发射功率减小了用户终端对相邻基站的干扰, 解决了现有技术中用户终端 对相邻基站干扰过强的技术问题, 使所述相邻基站能够接收到较强的由其 终端发送的数据信号, 进而提高了相邻基站与其终端的上行通信质量。 附图说明
图 1 为本发明实施例一中基站自身的功率控制流程图;
图 2 为本发明实施例一中确定第一导频信号发射功率的流程图; 图 3 为本发明实施例一中线阵天线的示意图;
图 4 为本发明实施例一中园阵天线的示意图;
图 5 为本发明实施例二中在核心网的协助下终端的功率控制流程图; 图 6 为本发明实施例三中一种基站的结构图;
图 7 为本发明实施例四中一种终端的结构图。 具体实施方式
为了更好的理解本发明的技术方案, 接下来本发明实施例中以室内基 站及终端为例, 结合说明书附图以及具体实施方式对上述技术方案进行详 细说明。 显然, 对于本领域普通技术人员来讲, 本功率控制方法不仅限于 应用在室内基站和终端, 也可以应用于微站和宏站, 只要是本领域普通技 术人员基于本发明中提及的室内基站及终端能够想到的其他基站和终端, 都属于本发明所要保护的范围。
本发明的总体思路如下:
在基站向用户终端发送数据信息进行下行通信时, 首先根据相关参数 信息, 如经历路测获得的空间损耗、 用户终端接收数据信息时的底噪等, 确定基站向用户终端发送数据信号即下行的最大第一发射功率; 然后基站 侦听获得周围相邻基站所属终端与自身间的方向角及空间隔离度, 基于第 一步确定的第一发射功率得出以第一功率发射数据信号时, 对相邻基站所 属终端的数据干扰强度; 随后判断此数据干扰强度是否超出了干扰门限, 若是表明以第一发射功率发射数据信号将导致相邻基站与其终端的下行通 信质量恶化甚至无法正常通信; 那么基站则会减小自身的实际发射功率, 进而减小对相邻基站与相邻基站所属终端间的下行通信的干扰, 提高相邻 基站与相邻基站所属终端间的下行通信质量。
在用户终端向工作基站发送数据信息进行上行通信时, 基于下行通信 相同的思路确定最大发射功率, 再基于最大发射功率获得用户终端以最大 发射功率发送数据信号时, 对所述基站相邻基站的数据干扰强度, 接着判 断此数据干扰强度是否超出了相邻基站的最大承受力即干扰门限, 若超出 了干扰门限用户终端则会调整自身实际发射功率, 减小对相邻基站与其终 端上行通信的干扰, 提高相邻基站与其终端的上行通信质量。
下面结合附图对本发明实施例技术方案的主要实现原理、 具体实施方 式及其对应能够达到的有益效果进行详细的阐述。
实施例一
请参考图 1 , 本发明实施例一提供一种基站的功率控制方法,应用于基 站中, 当所述基站发送信息到用户终端时, 包括:
S 101: 获得向所述用户终端发送数据信息的第一发射功率;
S102: 基于所述第一发射功率确定对相邻基站所属终端的第一数据干 扰强度;
S103: 判断所述第一数据干扰强度与干扰门限的差值是否大于零, 获 得判断结果;
S104: 若所述判断结果大于零, 减小所述第一发射功率至第二发射功 率, 使得以所述第二发射功率发射数据信息时, 对所述相邻基站所属终端 的第二数据干扰强度不超过所述干扰门限。
在具体实施过程中, S101为了获得向所述用户终端发送数据信息的第 一发射功率, 基站通常需要发射一个导频信号进行路测和试通信, 以探知 基站自身与所要通信的用户终端之间的第一空间损耗及用户终端接收数据 信息时的底噪。
因为大多数情况下基站与用户终端间在进行无线通信时, 由于无线电 波在传播的过程中会遇到障碍物如在室内通信时有拒子、 桌椅、 挂饰品等, 而在室外的宏站通信时则会有建筑、 高山、 丛林等会减弱波的传输能力产 生损耗, 甚至连空气对波的传输也有阻碍也会产生损耗, 所以假如基站以
10W 的功率发射数据信号, 往往会因为空间损耗用户终端只能收到低于 10W的数据信号, 如 9.5W、 8W、 甚至是 6W, 而用户终端的电子设备在接 收数据信号时自身会产生一些噪音即底噪, 对接收基站发射来的数据信号 也会有损耗, 所以通过发射第一导频信号获取第一空间损耗和用户终端的 底噪, 能够有效的帮助基站分析通信环境, 提高确定第一发射功率的准确 性。
经过 S101 获得第一发射功率后, 执行 S102 : 基于所述第一发射功率 确定对相邻基站所属终端的第一数据干扰强度。
因为现在基站的数量越来越多, 分布也越来越密集, 特别是室内基站 与其相邻基站所属终端之间的干扰越来越强甚至超过干扰门限, 往往会导 致整个通信环境恶化, 所以本发明实施例的基站会确定自身与其相邻基站 所属终端的第一数据干扰强度, 用以判断自身对整个通信环境的影响。 在 S102完成后,继续 S103: 判断所述第一数据干扰强度与干扰门限的 差值是否大于零, 获得判断结果。
在具体实施过程中, 因为与基站相邻的基站所属终端 i可能不只一个, 所以比较各干扰强度 IUEi , 求出其中的最大值 IUE IMAX , 并计算它与终端 i 最 大允许干扰门限 IUEMAX之差(IUEMAX-I^MAX )是否大于 0, 具体判断结果包 括:
第一种情况: 判断结果为否, 即 ( IUE IMAX-IUE MAX ) < 0或没有相邻基 站所属终端 i, 表明基站以第一发射功率 PDMAXj发射数据信号不会影响到 终端 i的正常通信, 则基站对用户终端 j 的实际发射功率 PDj=PDMAXj。
第二种情况: 判断结果为是, 即 (IUE IMAX-IUE MAX )〉0, 表明此时基站 以第一发射功率 PDMAXj发射数据信号会影响到终端 i 的正常通信。 为了保 证终端 i 的正常通信, 本发明实施例减小基站对其相邻基站所述终端 i 的 数据干扰强度, 以提高相邻基站与其所属终端 i 的通信质量。 为了减小基 站对其相邻基站所述终端 i 的数据干扰, 则执行步驟 S 104。
S104: 若所述判断结果大于零, 减小所述第一发射功率至第二发射功 率, 使得以所述第二发射功率发射数据信息时, 对所述相邻基站所属终端 的第二数据干扰强度不超过所述干扰门限。
具体实施过程中, 在所述减小所述第一发射功率至第二发射功率之前, 基站在接收到用户终端响应的反馈信号后, 基于所述反馈信号, 获得确定 所述第二发射功率的参数信息。
所述参数信息具体包括: 发射信号时的波束成型增益 GBFj、 所述用户 终端接收数据信息的底噪 Ν 、 向所述用户终端发送信息时的第一空间损耗 PLj和向所述用户终端发送数据信息时最高阶调制的解调门限 SNRDh。基于 所述参数信息及所述第一数据干扰强度与干扰门限的差值(严 iMAX-iUE MAX ), 可以确定向所述用户终端发送数据信息的第二发射功率即此时工作基站对 用户终端 j 的实际发射功率即第二发射功率 PDj可以由如下所示公式获得:
Figure imgf000009_0001
( ( IUE丽 -IUE MAX )
因 为 基 站 可 以 发 射 的 最 大 流 量 第 一 发 射 功 率 为 PDMAXj=NIj+SNRDh-GBFj+PLj , 所以第二发射功率还可以为:
Poj-PDMAXj- ( IUEiMAX_IUEMAX )»
当然在满足用户终端 j 对接收的数据信号强度的要求下, 第二发射功 率不仅局限于减小 ( IUE iMAX-IUE MAX ), 也可以减小一个比 ( IUE iMAX-IUE MAx ) 大的值。 假设用户终端 j对接收的数据信号强度的要求为最低 30W, 基站 可以发射的第一发射功率为 45W, 以 45W发射数据信号时超出干扰门限 5W, 那么第二发射功率则可以减小到 40W至 30W之间的任一值。
本发明实施过程中, 为了在发射第一导频信号时尽量减少干扰, 需要 先确定第一导频信号的第三发射功率,请参考图 2, 本发明实施例提供了一 种确定第一导频信号的第三发射功率的方法, 包括:
S201: 获得所述基站与相邻基站间的至少一个空间隔离度;
S202: 判断所述至少一个空间隔离度中最小的第一空间隔离度是否大 于隔离门限值, 获得第二判断结果;
S203: 若所述第二判断结果为是, 则基于所述第一空间隔离度, 获得 所述第一导频信号的第三发射功率。
下面对 S201的具体实施过程进行详细描述:
首先, 工作基站对周围相邻基站进行监听, 获得相邻基站的导频信号 强度 RBSi , 为精确 RBSi 的计算需要滤除干扰, 方法如下: 假如接收到的同 一根天线发出的导频 k 能量为
Figure imgf000009_0002
其中 RBS k为纯导频 k 的能 量, Nk为叠加在导频 k上的干扰, 导频 k 的真值为 Pk, 那么根据公式:
Figure imgf000009_0003
即可得到相邻基站 i 的纯导频信号强度 RBSi , 因为叠加在 K上的干扰 在与导频真值相关求和后归于 0。
然后,侦听相邻基站的导频发射功率 TBSi , 因为基站与其相邻的基站会 有一定的距离会产生一定的损耗, 所以相邻基站的导频发射功率往往比基 站实际监听获得的导频信号强度 R ^大,由此计算获得工作基站与其相邻基 站间的空间隔离度 PLBSBSi为: 因为基站周围可能没有与其相邻的基站, 或者有一个也可能有多个, 当基站周围没有与其相邻的基站时空间隔离度为无穷大, 此时确定出其中 最小的一个第一空间隔离度 PLBS- BS iMIN, 因为基站与其相邻的基站间空间隔 离度越大, 相互之间的干扰就越小, 若最小的第一空间隔离度都大于允许 的最小隔离度即隔离门限, 那么所有的相邻基站则都大于隔离门限。
整个步驟 S201还可以在基站上属的核心网协助下进行:
首先, 核心网可控制空闲基站逐个进入干扰基站监听模式, 以免同时 进入基站监听模式导致漏检。
其次, 核心网可以收集在网基站的经纬度、 小区 ID、 工作频率、 导频 发射功率, 并根据各基站经纬度或所在网段, 在其第一次接入核心网或其 发起查询时, 向其广播周围同频基站的小区 ID 和导频发射功率 (rss ; ), 以 缩短其监听的时间。 基站收到该信息后, 可以只在非广播子帧的空闲子帧 进行监听, 这样可不影响自身同步信号和广播子帧的发射。
核心网还可收集各基站的导频干扰告警、相邻基站 ID及其与相邻基站 的空间隔离度 P ^ - 。然后核心网可将该空间隔离度信息 P ^ - 发送给基 站。
在获得基站与其相邻基站间的空间隔离度后执行:
步驟 S202: 判断所述至少一个空间隔离度中最小的第一空间隔离度是 否大于隔离门限值, 获得第二判断结果。 此时会有两种情况:
第一种: 判断结果为是, 表明最小的第一空间隔离度大于隔离门限可 以继续步驟 S203即若所述第二判断结果为是,则基于所述第一空间隔离度, 获得所述第一导频信号的第三发射功率即基站自身的导频 / 广播发射功率 TBS 0 = SNRRS + PLBS-BS , 其中 SNRRS为广播信号解调门限。
第二种: 判断结果为否即 PLBSBS iMIN 小于隔离门限值 PLBS-BS T或 RBSi 超过门限值 RBS T, 表明此时基站与其相邻基站间的相互干扰较大会导致互 相的通信质量下降。 此时基站则会自动告警, 可以是声光告警, 也可以是 后台告警, 以便家庭基站或天线重新寻找到合适的摆放位置, 室外宏站则 可以改变发射 /接收数据信号的方向。
为了更好的重新确认适合的基站摆放位置, 可以根据各干扰基站的导 频信号强度 RBSi , 将干扰基站进行排序, 获得超出门限的相邻基站, 并对导 频信号强度超过门限的基站进行测向, 求出超过门限的相邻基站与基站间 的第四方位角 ΘΒ
求所述方位角的方法如下: 设天线 k 收到的与其相邻的基站信号为 exp(% ) , 其中 A为信号幅度, 为信号相位。 由于基站的天线分线阵天线 和园阵天线, 它们的方位角计算方法不一样, 下面分别进行说明。
1、 对于线阵天线, 请参考图 3, 根据信号的来波方向可知存在如下关 系: 2π—— ^—— = (pk― ¾-ι 其中 d 为天线 k与天线 K-1的间距, λ为信号波长,故相邻基站 i的第 四方位角 Θ 为:
Figure imgf000011_0001
2、对园阵天线, 请参考图 4, 其中 r为园阵天线半径, 天线 0、 天线 1、 天线 2、 天线 3之间的相位存在如下关系:
^ rsin^-rcos^
2^ = φι—φ。
„ rsin^-rcos^
2^ = φ2 - φ、
^ rsin^-rcos^
2^ = φ3 - φ2
^ rsin^-rcos^
2 =φ。 - 3 故相邻基站 i的第四方位角(θΒ¾ 为:
4π r
= arccos(^^^)
4π r
φ(Ί λ φ、 一 φ
arccos (― -—) + arccos (-
4π r ' 4π
经上述方法得出超过门限的相邻基站与基站间的第四方位角 ΘΒ 后,可 以根据第四方位角 θ 的反方向或其他方向移动基站或天线的位置,减小在 该方向上基站与其相邻基站间的相互之间干扰。 待重新确定位置后重新开 始步驟 S201、 S202, 直至第一空间隔离度大于隔离门限后, 执行步驟 S203 获得第一导频信号的第三发射功率。
具体实施过程中, 第一导频信号的第三发射功率确定后, 基站则以第 三发射功率发射第一导频信号给用户终端; 再接收所述用户终端发送的响 应所述第一导频信号的反馈信号; 然后基站根据所述反馈信号能够获得第 一发射功率。
基站获得第一发射功率的具体方法为: 获取反馈信号中包含的用户终 端 j反馈接收到的第一导频信号强度 RSRPj 和导频信号质量 RSR(¾。 根据 第一导频信号强度 RSRPj 和导频信号质量 RSRQj, 计算得到用户终端 j 的 底噪 Nlj 及基站与用户终端 j之间的第一空间损耗 PLj, 确定公式如下:
NIj=RSRPj-RSRQj PLj = TB RSRPj
然后可以根据 NIj、 PLj , 及基站向用户终端 j发送数据信息的下行最高 阶调制的解调门限 SNRDh、波束成型增益 GBFj ,获得基站对该用户终端 j 的 最大流量第一发射功率
P腿 Xj=NIj+SNRDh-GBFj+PLj。
在具体实施过程中, 基于所述第一发射功率确定对相邻的基站所属终 端的第一数据干扰强度, 具体方法如下:
首先, 获取所述基站与所述用户终端间波束成型的第一方位角 eUEj ,及 所述基站与相邻基站的所属终端 i间的第二方位角 θ , 获得第一方位角和 第二方位角的方法与上述获取相邻基站的第四方位角 eBSi的方法相同,在此 就不再重复描述了。
然后, 基于所述第一方位角 θυΕ」 和所述第二方位角 θ , 获得所述相 邻基站所属终端 i偏离所述波束成型方向的第三方位角(θυΕ ΓθυΕ」)。 因为本 发明实施例运用了波束成型技术, 通过对多个天线输出信号的相关性进行 相位加权, 使信号在第一方位角的方向上形成同相叠加, 从而实现信号的 增益, 同时在其他方向形成相位抵消, 减小对其他终端的信号干扰, 所以 在偏离所述波束成型方向的第三方位角( θυΕ ΓθυΕ」 )上信号会有较大的损耗。
随后, 根据所述波束成型的辐射方位图, 获得偏离所述波束成型方向 的所述第三方位角 (θυΕ ΓθυΕ」)上的第一辐射损耗 L ( θυΕ ΓθυΕ」)。 为了准确 判定数据干扰强度, 本发明实施例在计算数据干扰强度时不仅考虑了基站 与其相邻基站所属终端 i 的第二空间隔离度 PLBS-UEi , 还考虑到偏离所述波 束成型方向的不同方向的损耗不同, 根据波束成型的辐射方位图上不同的 方位上不同的辐射损耗准确计算数据干扰强度。
最后,基于所述第一发射功率 pDMAXj和所述第一辐射损耗 L( eUEi-eUEj ), 获取以所述第一发射功率 pDMAXi发送数据信息时, 对所述相邻基站所属终 端 i 的第一数据干扰强度
Figure imgf000014_0001
( θυ -θυ ) -PLBS-UEi。
所述数据干扰强度 IUEi还可以在核心网的协助下完成: 首先基站以第 一发射功率发射试探信号, 然后接收所述基站所属核心网发送的基于所述 试探信号对所述相邻基站所属终端的第一数据干扰强度。 因为如果某相邻 基站所属终端 i 受到了超出最大允许干扰门限 IUEMAX 的干扰, 则可通过其 所属基站向核心网报告干扰它的基站小区 ID及其干扰信号强度 IUEi , 核心 网收到该告警后向该小区 ID所属基站报告其干扰信号强度 IUEi。
在上述实施例中, 由于基站减小了实际数据信号的发射功率, 从而减 小了对终端 i的数据干扰, 使得相邻基站与其所属终端 i 的通信质量提高; 同时由于基站的发射功率减小了, 还可以达到节约电能的有益效果; 并且 在本发明实施例中基站发射信号时采用了波束成型技术, 在波束成型方向 上有较好的波束成型增益, 使用户终端能接收到较大功率的数据信号, 提 升了数据流量进而提高了通信质量。
实施例二
请参考图 5, 本发明实施例提供一种终端的功率控制方法,应用在终端 中, 当所述终端发送信息给工作基站时, 所述方法包括:
S501: 接收所述工作基站发送的接入信号强度信息。
其中,所述接入信号强度信息中的接入信号强度 RAT包含有工作基站接 入信号解调门限 SNRAT和工作基站测量的自身的底噪 NIBS , 具体的
RAT=SNRAT+NIBS
一般情况下当用户终端需要给工作基站发送数据信息时会发送一个通 信请求, 工作终端接收到所述通信请求时会将工作基站自身接入信号强度 信息发送给用户终端; 或者用户终端直接通过监听工作基站广播的自身接 入信号强度要求信号, 接收到工作基站的接入信号强度信息。 S502: 获得向所述工作基站发送信息的第一空间损耗。
在具体实施过程中, 用户终端与工作基站建立通信连接后, 工作基站 会发送一导频信号给用户终端, 同时并广播自己的导频信号发射功率 TBS 0, 由于信号在传输的过程中会有损耗所以用户终端接收到实际的导频信号强 度 RSRPj会比工作基站发射的导频信号发射功率 TBS。小。 用户终端根据广 播信息终端 TBS Q与实际接收到的 RSRPj的差值获得向所述工作基站发送信 息的第一空间损耗 PLj=TBS。 - RSRPj。
S503: 基于所述第一空间损耗及所述接入信号强度信息中的接入信号 强度, 确定向所述工作基站发送数据信息的第一发射功率。
因为本发明实施例采用了波束成型技术, 工作基站在接收用户终端发 送来的数据信号时会产生接收合并增益 GRCj, 因此用户终端可以不用发送 一个很大功率的数据信号去保证工作基站能够顺利接收到高质量的所述数 据信号。 一般的根据用户终端向工作基站发送数据信号的上行最高阶调制 的解调门限 SNRuh、接收合并增益 GRCj、 第一空间损耗 PLj及从接入信号强 度里获得的工作基站的底噪 NIBS, 用户终端 j 可以确定一个向所述工作基 站发送数据信息的最大第一发射功率 PUMAXj=NIBS+SNRuh-GRCj+PLj。
S504: 获得所述终端与所述工作基站的相邻基站之间的第二空间隔离 度。
在用户终端向工作基站发送数据信息时, 用户终端所发送的信号会对 工作基站相邻基站产生数据干扰, 为了避免所述数据干扰过强, 本发明实 施例通过获得用户终端 j 与工作基站的相邻基站之间的第二空间隔离度进 一步确定所述数据干扰强度。 具体的实现方式可以是:
用户终端 j 监听各相邻基站的第三导频信号功率 RSRP 并根据接收 到的工作基站监听到的各相邻基站的实际导频发射功率 TBSi,计算用户终端 j 与各相邻基站的第二空间隔离度 PLUE- BSj^TBSi-RSRPji。 S505: 根据所述第二空间隔离度及第一发射功率, 获得对所述相邻基 站的数据干扰强度。
一般的, 用户终端 j 可以根据第一发射功率 PUMAXj与第二空间隔离度
PLUEΒ 的差值获得对各相邻基站的数据干扰强度 IBSji=PUMAXj-PLUEΒ
具体实施过程中, 用户终端对与工作基站的相邻基站的数据干扰强度
IBSji也可利用核心网进行干扰协调:
若某相邻基站受到了工作基站 i 的终端 j 的超出最大允许干扰门限
IBSMAX 的干扰, 则可向核心网报告干扰它的基站 i 小区 ID、 所属终端导频 及其干扰信号强度 IBSji。核心网收到该告警后向该小区 ID 所属基站 i报告 干扰终端导频及其数据干扰强度 IBSji,工作基站 i 收到该通知后将超出最大 干扰门限的数据干扰强度 ΙΒ 发送给用户终端。
S506: 判断所述数据干扰强度与干扰门限的差值是否大于零, 获得判 断结果。
在具体实施过程中, 由于与工作基站相邻的基站往往会有多个, 为了 保证用户终端对任意一个相邻基站不造成过强的干扰, 用户终端可以比较 各干扰强度 IBSji, 求出其中的最大值 IBSjiMAX, 并计算它与相邻基站最大允 许干扰门限 IBSMAX之差 IBSjIMAX-IBS MAX, 判断数据干扰强度 ΙΒ 与干扰门限
IBSMAX的差值是否大于零, 获得判断结果。
当判断结果为小于等于 0时, 即( IBSjiMAX-IBS MAX ) < 0或没有干扰基站, 表明用户终端以第一发射功率发送数据信号时不会对工作基站周围相邻基 站造成过强的干扰, 则用户终端 j 的实际发射功率 Puj=PUMAXj。
当判断结果为大于 0时, 即 ( IBSjiMAX-IBS MAX )〉0, 表明用户终端以第 一发射功率发送数据信号时会对工作基站周围相邻基站造成过强的干扰, 将导致相邻基站与其所属终端的上行通信环境恶化。
S507: 若所述判断结果大于零, 减小所述第一发射功率至第二发射功 率, 使得以所述第二发射功率发射数据信息时, 对所述相邻基站的第二数 据干扰强度不超过所述干扰门限。减小用户终端 j的实际发射功率,从而降 低对相邻基站的数据干扰。
本发明实施例中, 为了进一步确定第二发射功率, 在减小所述第一发 射功率至第二发射功率之前, 用户终端可以获得所述工作基站接收数据信 号时的接收合并增益 GRq , 基于所述接收合并增益 GRq、 所述差值
(
Figure imgf000017_0001
)及所述第一发射功率 PUMAXj,确定向所述工作基站发送数 据信息的第二发射功率即用户终端 j 的实际发射功率 Puj可以由下式确定:
Figure imgf000017_0002
( IBSjMAx-IBSMAx )
由于第一发射功率 PUMAXj=NIBS+SNRuh-GRCj+PLj , 所以第二发射功率
Puj 可以为:
Puj-PuMAXj" ( IBSjiMAX"IBSMAX )
用户终端在保证自身与工作基站之间的正常通信的前提下, 向工作基 站实际发射的数据信号的第二发射功率不仅局限于在第一发射功率的基础 上减去一个最大数据干扰强度与最大干扰门限之间的差值, 还可以减去一 个比所述差值大的值。 假设用户终端向工作基站发送的数据信号强度最低 要求为 40W, 用户终端确定的最大第一发射率为 50W, 最大数据干扰强度 与干扰门限的差值为 5W,那么此时用户终端向工作基站实际发射的数据信 号的第二发射功率可以减小为 45W,也可以减小为 43W、42W等在 45W至 40W之间的值。
由于用户终端在向工作基站发送数据信号时, 不仅考虑了工作基站的 接入信号强度要求, 还减低自身所发出的数据信号对工作基站的相邻基站 的数据干扰, 解决了所述数据干扰强度过大的技术问题, 改善了整个通信 环境、 提高了相邻基站与其所属终端的上行通信质量。 本发明实施例还采 用了波束成型技术, 使得用户终端根据工作基站的接收合并增益可以减小 自身实际发送数据信号的第二发射功率, 能够节约电能, 减小干扰。
实施例三
请参考图 6, 本发明实施例提供一种基站, 所述基站包括:
第一发射单元 601 , 配置为发射第一导频信号给用户终端;
第一接收单元 603 ,配置为接收所述用户终端发送的响应所述第一导频 信号的反馈信号;
第一处理芯片 602, 与所述第一发射单元 601及所述第一接收单元 603 相连, 配置为: 首先基于所述第一导频信号和反馈信号, 获得所述用户终 端接收数据信息的底噪及向所述用户终端发送信息时的第一空间损耗, 然 后基于所述底噪和所述第一空间损耗, 确定向所述用户终端发送数据信息 的第一发射功率, 接着基于所述第一发射功率确定对相邻基站所属终端的 第一数据干扰强度, 随后判断所述第一数据干扰强度与干扰门限的差值是 否大于零, 获得判断结果, 最后若所述判断结果大于零, 减小所述第一发 射功率至第二发射功率, 使得以所述第二发射功率发送数据信息时, 对所 述相邻基站所属终端的第二数据干扰强度不超过所述干扰门限。
上述第一发射单元 601、 第一接收单元 603、 第一处理芯片 602可由基 站中的中央处理器( CPU, Central Processing Unit )、数字信号处理器( DSP, Digital Signal Processor )或可编程门阵列( FPGA, Field - Programmable Gate Array ) 实现。
由于本实施例中的基站为与方法对应的虚拟装置, 所以, 其具体的工 作过程就不再进行具体的描述了。
实施例四
请参考图 7, —种用户终端, 所述用户终端包括:
第二接收单元 701 , 配置为接收工作基站发送的接入信号强度信息, 及 向所述工作基站发送信息的第一空间损耗; 第二处理芯片 702, 与所述第二接收单元 701相连, 配置为: 首先根据 所述第一空间损耗及所述接入信号强度信息中的接入信号强度, 确定向所 述工作基站发送数据信息的第一发射功率, 然后根据与所述工作基站相邻 基站的第三空间隔离度及所述第一发射功率, 获得对所述工作基站相邻基 站的数据干扰强度, 接着判断所述数据烦扰强度与干扰门限的差值是否大 于零, 获得判断结果, 若所述判断结果大于零, 减小所述第一发射功率至 第二发射功率, 使得以所述第二发射功率发送数据信息时, 对所述工作基 站相邻基站的第二数据干扰强度不超过所述干扰门限;
第二发射单元 703, 与所述第二处理芯片 702相连, 配置为以所述第二 发射功率发射数据信息给所述工作基站。
上述第二接收单元 701、 第二处理芯片 702、 第二发射单元 703可由用 户终端中的 CPU、 DSP或 FPGA实现。
由于本实施例中的用户终端为与方法对应的虚拟装置, 所以, 其具体 的工作过程就不再进行具体的描述了。
通过本发明实施例中的一个或多个技术方案, 可以实现如下一个或多 个技术效果:
1、 在本发明实施例中, 基站在向用户终端发送数据信息时, 通过确定 一个第一发射功率, 获得以第一发射功率发射数据信号时, 基站对相邻基 站所属终端的数据干扰强度, 若数据干扰强度超出了干扰门限, 则采用波 束成型技术调整基站的实际发射功率以减小干扰强度, 解决现有技术中基 站对相邻基站所属终端造成过大干扰的技术问题。 由于减小了数据干扰强 度, 使得相邻基站所属终端能够更好的接收相邻基站发射的数据信号, 进 而提高了相邻基站与其终端的下行通信质量。
2、 由于基站在发射导频信号前, 监听获得自身与其相邻的基站的空间 隔离度, 并检测超出隔离门限的相邻基站的具体方位, 有助于基站找到合 适的位置或信号接收 /发送方向,避免基站与相邻基站之间的相互干扰,提 高自身的通信质量。
3、 当用户终端箱基站发送数据信息时, 不仅考虑所属基站接入信号要 求也会根据所述基站相邻基站的干扰门限, 调整用户终端自身的发射功率, 若用户终端的第一发射功率对所述相邻基站的干扰过强, 则会调小自身的 发射功率以减小对相邻基站的干扰, 解决现有技术干扰过大的技术问题, 使所述相邻基站的能够更好的接收其终端发送的数据信号, 提高了相邻基 站与其终端的上行通信质量。
4、 在本发明实施例中采用了波束成型技术, 由于波束成型增益使得用 户终端能够接收到由多个相同相位加权后的高功率数据信号, 提升了流量, 与此同时基站利用波束成型增益以较小的功率发射数据信号, 从而能够较 好节约电能; 相应的利用波束成型技术的接收合并增益, 基站能够接收到 更高质量的数据信号, 因此用户终端可以发射较低功率的数据信号给基站, 进一步减小了数据干扰。
以上所述, 仅为本发明的优选实施例而已, 并非用于限定本发明的保 护范围。 凡在本发明的精神和范围之内所作的任何修改、 等同替换和改进 等, 均包含在本发明的保护范围之内。 工业实用性 本发明实施例中, 基站在向用户终端发送数据信息时, 通过确定一个 第一发射功率, 获得以第一发射功率发射数据信号时, 基站对相邻基站所 属终端的数据干扰强度, 若数据干扰强度超出了干扰门限, 则采用波束成 型技术调整基站的实际发射功率以减小干扰强度, 解决了现有技术中基站 对相邻基站所属终端造成过大干扰的技术问题。

Claims

权利要求书
1、 一种基站的功率控制方法, 应用于基站中, 其中, 当所述基站发送 信息到用户终端时, 包括:
获得向所述用户终端发送数据信息的第一发射功率;
基于所述第一发射功率确定对相邻基站所属终端的第一数据干扰强 度;
判断所述第一数据干扰强度与干扰门限的差值是否大于零, 获得判断 结果;
若所述判断结果大于零, 减小所述第一发射功率至第二发射功率, 使 得以所述第二发射功率发射数据信息时, 对所述相邻基站所属终端的第二 数据干扰强度不超过所述干扰门限。
2、 根据权利要求 1 所述的方法, 其中, 在所述获得向所述用户终端发 送数据信息的第一发射功率之前, 所述方法还包括:
获得第一导频信号的第三发射功率;
基于所述第三发射功率, 发射所述第一导频信号给所述用户终端; 接收所述用户终端发送的响应所述第一导频信号的反馈信号, 其中所 述反馈信号能够用于获得所述第一发射功率。
3、 根据权利要求 2 所述的方法, 其中, 所述获得第一导频信号的第三 发射功率, 具体包括:
获得所述基站与相邻基站间的至少一个空间隔离度;
判断所述至少一个空间隔离度中最小的第一空间隔离度是否大于隔离 门限值, 获得第二判断结果;
若所述第二判断结果为是, 则基于所述第一空间隔离度, 获得所述第 一导频信号的第三发射功率。
4、 根据权利要求 2 所述的方法, 其中, 在所述减小所述第一发射功率 至第二发射功率之前, 所述方法进一步包括:
基于所述反馈信号, 获得确定所述第二发射功率的参数信息; 基于所述参数信息及所述差值, 确定向所述用户终端发送数据信息的 第二发射功率。
5、 根据权利要求 4所述的方法, 其中, 所述参数信息具体包括: 发射信号时的波束成型增益; 和
所述用户终端接收数据信息的底噪; 和
向所述用户终端发送信息时的第一空间损耗; 和
向所述用户终端发送数据信息时最高阶调制的解调门限。
6、 根据权利要求 1至 5任一项所述的方法, 其中, 所述基于所述第一 发射功率确定对相邻的基站所属终端的第一数据干扰强度, 具体包括: 获取所述基站与所述用户终端间波束成型的第一方位角, 及所述基站 与相邻基站的所属终端间的第二方位角;
基于所述第一方位角和所述第二方位角 , 获得所述相邻基站所属终端 偏离所述波束成型方向的第三方位角;
根据所述波束成型的辐射方位图, 获得所述第三方位角上的第一辐射 损耗;
基于所述第一发射功率和所述第一辐射损耗, 获取以所述第一发射功 率发送数据信息时, 对所述相邻基站所属终端的第一数据干扰强度。
7、 根据权利要求 1至 5任一项所述的方法, 其中, 所述基于所述第一 发射功率确定对相邻的基站所属终端的第一数据干扰强度, 具体包括: 以所述第一发射功率发射试探信号;
接收所述基站所属核心网发送的基于所述试探信号对所述相邻基站所 属终端的第一数据干扰强度。
8、 一种终端的功率控制方法, 应用在终端中, 其中, 当所述终端发送 信息给工作基站时, 所述方法包括:
接收所述工作基站发送的接入信号强度信息;
获得向所述工作基站发送信息的第一空间损耗;
基于所述第一空间损耗及所述接入信号强度信息中的接入信号强度, 确定向所述工作基站发送数据信息的第一发射功率;
获得所述终端与所述工作基站的相邻基站之间的第二空间隔离度; 根据所述第二空间隔离度及第一发射功率 , 获得对所述相邻基站的数 据干扰强度;
判断所述数据干扰强度与干扰门限的差值是否大于零, 获得判断结果; 若所述判断结果大于零, 减小所述第一发射功率至第二发射功率, 使 得以所述第二发射功率发射数据信息时 , 对所述相邻基站的第二数据干扰 强度不超过所述干扰门限。
9、 根据权利要求 8 所述的方法, 其中, 在所述减小所述第一发射功率 至第二发射功率之前, 所述方法还包括:
获得所述工作基站接收数据信号时的接收合并增益;
基于所述接收合并增益、 所述差值及所述第一发射功率, 确定向所述 工作基站发送数据信息的第二发射功率。
10、 根据权利要求 8 所述的方法, 其中, 所述获得所述终端与所述工 作基站的相邻基站之间的第二空间隔离度, 具体包括:
监听所述相邻基站的第三导频信号功率;
接收所述工作基站获得的所述相邻基站的实际导频信号发射功率; 基于所述第三导频信号功率及所述实际导频信号发射功率, 获得所述 终端与所述相邻基站的第二空间隔离度。
11、 一种基站, 其中, 所述基站包括:
第一发射单元, 配置为发射第一导频信号给用户终端; 第一接收单元, 配置为接收所述用户终端发送的响应所述第一导频信 号的反馈信号;
第一处理芯片, 与所述第一发射单元及所述第一接收单元相连, 配置 为: 首先基于所述第一导频信号和反馈信号, 获得所述用户终端接收数据 信息的底噪及向所述用户终端发送信息时的第一空间损耗, 然后基于所述 底噪和所述第一空间损耗, 确定向所述用户终端发送数据信息的第一发射 功率, 接着基于所述第一发射功率确定对相邻基站所属终端的第一数据干 扰强度, 随后判断所述第一数据干扰强度与干扰门限的差值是否大于零, 获得判断结果, 最后若所述判断结果大于零, 减小所述第一发射功率至第 二发射功率, 使得以所述第二发射功率发送数据信息时, 对所述相邻基站 所属终端的第二数据干扰强度不超过所述干扰门限。
12、 一种用户终端, 其中, 所述用户终端包括:
第二接收单元, 配置为接收工作基站发送的接入信号强度信息, 及向 所述工作基站发送信息的第一空间损耗;
第二处理芯片, 与所述第二接收单元相连, 配置为: 首先根据所述第 一空间损耗及所述接入信号强度信息中的接入信号强度, 确定向所述工作 基站发送数据信息的第一发射功率, 然后根据与所述工作基站相邻基站的 第三空间隔离度及所述第一发射功率, 获得对所述工作基站相邻基站的数 据干扰强度, 接着判断所述数据烦扰强度与干扰门限的差值是否大于零, 获得判断结果, 若所述判断结果大于零, 减小所述第一发射功率至第二发 射功率, 使得以所述第二发射功率发送数据信息时, 对所述工作基站相邻 基站的第二数据干扰强度不超过所述干扰门限;
第二发射单元, 与所述第二处理芯片相连, 配置为以所述第二发射功 率发射数据信息给所述工作基站。
PCT/CN2013/082458 2012-09-04 2013-08-28 一种基站、终端及其功率控制方法 WO2014036905A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP13834862.8A EP2894898B1 (en) 2012-09-04 2013-08-28 Base station, terminal, and power control method thereof
US14/425,008 US9686753B2 (en) 2012-09-04 2013-08-28 Base station, terminal, and power control methods thereof
IN2482DEN2015 IN2015DN02482A (zh) 2012-09-04 2015-03-26
HK15107358.4A HK1206906A1 (zh) 2012-09-04 2015-07-31 種基站、終端及其功率控制方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210323129.7A CN102858004B (zh) 2012-09-04 2012-09-04 一种基站、终端及其功率控制方法
CN201210323129.7 2012-09-04

Publications (1)

Publication Number Publication Date
WO2014036905A1 true WO2014036905A1 (zh) 2014-03-13

Family

ID=47404106

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/082458 WO2014036905A1 (zh) 2012-09-04 2013-08-28 一种基站、终端及其功率控制方法

Country Status (6)

Country Link
US (1) US9686753B2 (zh)
EP (1) EP2894898B1 (zh)
CN (2) CN108282802B (zh)
HK (1) HK1206906A1 (zh)
IN (1) IN2015DN02482A (zh)
WO (1) WO2014036905A1 (zh)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108282802B (zh) * 2012-09-04 2021-05-11 中兴通讯股份有限公司 一种基站、终端及其功率控制方法
CN103974401B (zh) * 2013-02-05 2019-02-22 新华三技术有限公司 一种ap的功率调整方法、ac及ap
CN111010707B (zh) * 2013-06-13 2024-03-22 索尼公司 干扰协调方法、干扰协调装置以及测量装置
CN105532044B (zh) * 2013-07-31 2019-05-28 华为技术有限公司 数据帧的发送、接收方法和装置
US10382174B2 (en) * 2014-07-25 2019-08-13 Lg Electronics Inc. Method and apparatus for inter-cell interference cancellation in wireless communication system
CN105792343B (zh) * 2014-12-23 2019-02-26 上海无线通信研究中心 无线通信系统中天线波束功率调整的干扰协调方法
US10588049B2 (en) * 2015-03-27 2020-03-10 Apple Inc. Optimizing applications behavior in a device for power and performance
CN109076466B (zh) * 2016-04-28 2021-08-17 索尼集团公司 导频信号的发送功率
EP3509363B1 (en) * 2016-09-02 2021-07-14 Nippon Telegraph And Telephone Corporation Wireless communication system and wireless communication method
CN107196730B (zh) * 2017-06-19 2019-06-14 中国移动通信集团江苏有限公司 用于tdd系统的通信方法和装置
US11284359B2 (en) * 2019-03-29 2022-03-22 Mediatek Inc. Uplink power control and time-division multiplexing patterns for dual active protocol stack based handover
CN111405651B (zh) * 2020-03-27 2023-12-26 北京小米移动软件有限公司 一种动态调整发射功率的方法、装置及介质
CN113709765B (zh) * 2020-05-22 2024-03-12 中国移动通信集团吉林有限公司 一种最小接入电平的确定方法、装置和计算机设备
US11696239B1 (en) * 2020-08-28 2023-07-04 T-Mobile Innovations Llc Reference signal enhancement in a wireless communication network
US11658697B2 (en) * 2020-11-06 2023-05-23 At&T Intellectual Property I, L.P. Port reconfiguration for passive intermodulation interference mitigation
CN112954785A (zh) * 2021-03-08 2021-06-11 中国人民解放军军事科学院战争研究院 一种基站功率控制方法
CN113692036B (zh) * 2021-08-24 2023-11-14 深圳市新天能科技开发有限公司 一种基于智能公交站台的基站通信方法、系统和存储介质
CN113840365A (zh) * 2021-10-27 2021-12-24 广州市瀚云信息技术有限公司 一种直放站的功率控制方法及装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110136533A1 (en) * 2009-12-08 2011-06-09 Futurewei Technologies System and Method for Power Control
CN102281571A (zh) * 2010-06-11 2011-12-14 电信科学技术研究院 一种功率控制的方法和设备
CN102858004A (zh) * 2012-09-04 2013-01-02 中兴通讯股份有限公司 一种基站、终端及其功率控制方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2237225A1 (en) * 1998-05-05 1999-11-05 John T. Sydor Highly structured rosette antenna array system for data communications
US7433310B2 (en) * 2003-03-12 2008-10-07 Interdigital Technology Corporation Estimation of interference variation caused by the addition or deletion of a connection
KR100965338B1 (ko) * 2003-08-18 2010-06-22 엘지전자 주식회사 Ofdm 셀룰러 환경에서 셀간 간섭 저감을 위한부반송파 할당방법
US8452316B2 (en) * 2004-06-18 2013-05-28 Qualcomm Incorporated Power control for a wireless communication system utilizing orthogonal multiplexing
KR100933132B1 (ko) * 2006-12-28 2009-12-21 삼성전자주식회사 통신 시스템에서 전력 제어 방법 및 시스템
US8761824B2 (en) * 2008-06-27 2014-06-24 Qualcomm Incorporated Multi-carrier operation in a wireless communication network
GB2462063B (en) * 2008-07-15 2010-11-10 Ip Access Ltd Method and apparatus for setting an uplink transmit power level for a wireless communication unit
GB2462587B (en) 2008-08-01 2013-01-02 Vodafone Plc Interference mitigation in a mobile telecommunications network
EP2469910B1 (en) * 2009-08-19 2019-04-10 Panasonic Intellectual Property Corporation of America Interference-control method and femto base station
US20110070919A1 (en) * 2009-09-18 2011-03-24 Toshihiko Komine Transmission power control apparatus, transmission power control method, and computer-readable storage medium storing transmission power control program
KR101624905B1 (ko) * 2010-03-08 2016-05-27 삼성전자주식회사 무선통신시스템에서 상향링크 간섭을 제어하기 위한 장치 및 방법
US8379574B2 (en) * 2010-03-25 2013-02-19 Eden Rock Communications, Llc Systems and methods for mitigating intercell interference by coordinated scheduling amongst neighboring cells
US9554338B2 (en) * 2011-02-18 2017-01-24 Qualcomm Incorporated Apparatus, method, and system for uplink control channel reception in a heterogeneous wireless communication network
WO2012157281A1 (ja) * 2011-05-18 2012-11-22 パナソニック株式会社 受信装置、集積回路、受信方法、及び、プログラム
US9225493B2 (en) * 2013-11-06 2015-12-29 Qualcomm Incorporated Multimode wireless systems and methods
JP6200802B2 (ja) * 2013-12-25 2017-09-20 パナソニック株式会社 無線通信装置及び無線通信方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110136533A1 (en) * 2009-12-08 2011-06-09 Futurewei Technologies System and Method for Power Control
CN102281571A (zh) * 2010-06-11 2011-12-14 电信科学技术研究院 一种功率控制的方法和设备
CN102858004A (zh) * 2012-09-04 2013-01-02 中兴通讯股份有限公司 一种基站、终端及其功率控制方法

Also Published As

Publication number Publication date
US9686753B2 (en) 2017-06-20
EP2894898B1 (en) 2020-05-06
CN102858004B (zh) 2018-03-27
CN108282802B (zh) 2021-05-11
HK1206906A1 (zh) 2016-01-15
CN102858004A (zh) 2013-01-02
EP2894898A4 (en) 2016-01-27
EP2894898A1 (en) 2015-07-15
IN2015DN02482A (zh) 2015-09-11
CN108282802A (zh) 2018-07-13
US20150230189A1 (en) 2015-08-13

Similar Documents

Publication Publication Date Title
WO2014036905A1 (zh) 一种基站、终端及其功率控制方法
WO2020164339A1 (zh) 定向发送定位参考信号的方法及装置
US20210239783A1 (en) System and Method for Determining Line of Sight (LOS)
US9992725B2 (en) Method and apparatus for implementing high-frequency communication
US10743262B2 (en) Beam management for interference mitigation for wireless networks
US20170367067A1 (en) Apparatus and method for positioning terminal in wireless communication system
WO2021031714A1 (zh) 一种基于相对角度的定位方法及装置
JP2015527026A5 (zh)
KR20010088305A (ko) 무선 네트웍내의 이동국의 위치를 추정하기 위한 시스템및 방법
TWI760931B (zh) 資訊傳輸方法、裝置及電腦存儲介質
US20230288517A1 (en) Apparatus and Methods for Determining Line of Sight (LOS) from Intensity Measurements
US9326165B2 (en) Method, device, radio network controller and chip for improving network quality
WO2019062724A1 (zh) 一种确定波束互易性能力当前状态的方法及终端
US20210051489A1 (en) Beam training method, related apparatus, and system
CN111954229A (zh) 一种位置信息发送方法、装置和终端设备
WO2014056162A1 (zh) 通过分布式天线阵列系统进行通信的方法及阵列系统
WO2015135338A1 (zh) 一种资源分配方法及基站控制器
TW201735446A (zh) 天線對準系統及方法
CN111948604A (zh) 定位系统及方法
WO2021012118A1 (zh) 通信方法、装置、设备、系统及存储介质
US9794893B2 (en) Wireless communication control device and wireless communication control method
TWI540851B (zh) 射頻訊號處理方法及無線通訊裝置
WO2021138816A1 (zh) 用于波束选择的方法、终端设备和网络设备
WO2016041589A1 (en) Communications in a wireless system
KR20150015652A (ko) 상향링크 주파수 변경 장치 및 방법

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13834862

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 14425008

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 2013834862

Country of ref document: EP