WO2014206335A1 - 一种pusch功率控制方法及装置 - Google Patents

一种pusch功率控制方法及装置 Download PDF

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Publication number
WO2014206335A1
WO2014206335A1 PCT/CN2014/080952 CN2014080952W WO2014206335A1 WO 2014206335 A1 WO2014206335 A1 WO 2014206335A1 CN 2014080952 W CN2014080952 W CN 2014080952W WO 2014206335 A1 WO2014206335 A1 WO 2014206335A1
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Prior art keywords
interference
current cell
level
interference level
cell
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English (en)
French (fr)
Inventor
徐明宇
李琼
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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Priority to EP14816567.3A priority Critical patent/EP3016452B1/en
Priority to US14/392,219 priority patent/US9918281B2/en
Publication of WO2014206335A1 publication Critical patent/WO2014206335A1/zh
Anticipated expiration legal-status Critical
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04Transmission power control [TPC]
    • 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
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04Transmission power control [TPC]
    • H04W52/06TPC algorithms
    • H04W52/08Closed loop power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04Transmission power control [TPC]
    • H04W52/06TPC algorithms
    • H04W52/14Separate analysis of uplink or downlink
    • H04W52/146Uplink power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04Transmission power control [TPC]
    • 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
    • H04W52/241TPC 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 or Eb/lo
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04Transmission power control [TPC]
    • H04W52/30Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/32TPC of broadcast or control channels
    • H04W52/325Power control of control or pilot channels

Definitions

  • the present invention relates to communication technologies, and in particular, to a PUSCH power control method and apparatus. Background technique
  • LTE Long Term Evolution
  • OFDM Orthogonal Frequency Division Multiplexing
  • the power control can be divided into open loop power control and closed loop power control depending on whether the transmit power is determined by the sender or by the receiver.
  • the manner in which the transmitting end determines its transmission power based on its own knowledge of the channel is called open loop power control.
  • the advantage of open loop power control is that no additional signaling overhead is required; however, the disadvantage is that the understanding of the channel by the transmitting end is often deviated from the actual one. Therefore, the open loop power control based on the inaccurate understanding of the channel is usually not accurate.
  • the way in which the receiver determines the transmission power of the transmitting end is called closed loop power control.
  • the advantage of closed-loop power control is that the receiver can determine the transmit power of the transmitter according to its actual received signal shield. The power adjustment is more accurate.
  • the disadvantage is that additional signaling overhead is required.
  • the transmission power P PUSCH on one OFDM symbol of the Physical Uplink Shared Channel (PUSCH) of the subframe i sent by the user equipment (UE) described in the standard is determined by the following formula:
  • ⁇ PUSCH (' ⁇ ) min ⁇ CMAX , 101og 10 ( PUSCH ( ) + corpse 0 + A TF ( ) + ( ) ⁇
  • p 1 CMAX - is the maximum transmit power allowed by the UE
  • PRBs physical resource blocks
  • SPS UL-grant Semi-Persistent Scheduling Uplink-grant
  • two sets of different power control parameters are used for the dynamically scheduled PUSCH and the continuously scheduled PUSCH, and the two sets of parameters are respectively configured by different RRC layer information elements (IEs).
  • IEs RRC layer information elements
  • For retransmission or initial transmission of random access message 3 (message3, MSG3), ]—2 , it ⁇ > o_ UE _ PUSCH (2) 0 and ⁇ > o_NOMINAL_PUSCH ( ⁇ ) ⁇ ⁇ 0_PRE + , where ⁇ 0_PRE And TM SJ ⁇ are both configured by the RRC layer;
  • PL referenceSignalPower - higher layer filtered RSRP, where referenceSignalPower is configured by the RRC layer; is the gain of the transmission format, indicating whether to configure according to different modulation and decoding schemes (MCS)
  • MCS modulation and decoding schemes
  • the level adjusts the Power Spectrum Density (PSD).
  • K s 1.25
  • MPR O C IN RE in the case of control data, MPR ⁇ IN , where C Is the number of code blocks, which is the length of the first code block, and O ce/ is the number of downlink traffic quality information (CQI) bits including the CRC (Cyclic Redundancy Check) bit.
  • ⁇ ⁇ « ⁇ —. 'and ⁇ H-mtoi are defined in 3Gpp standard 36212 , C, and M - ''"''. Both can be obtained from the physical downlink control channel (PDCCH) corresponding to the initial transmission of the transport block;
  • PDCH physical downlink control channel
  • the current PUSCH power control adjustment state is given, which is defined as:
  • K PUSCH 4;
  • TDD UL/DL Time Division Duplex Uplink/DownLink (TDD UL/DL) configuration 1-6, K p
  • Table 1 For TDD UL/DL configuration 0, when the PUSCH transmission scheduled by PDCCH DCI format 0 is located in subframe 2 or 7 and the low bit of the UL index information field in the DCI is 1, 7; for other cases PUSCH transmission, ⁇ ⁇ is given in Table 1;
  • the UE attempts to decode one of the UE's C-RNTI or Semi-Persistent Scheduling-Radio Network Temporary Identifier (SPS-RNTI) in each non-discontinuous reception (DRX) subframe.
  • SPS-RNTI Semi-Persistent Scheduling-Radio Network Temporary Identifier
  • the PDCCH of the DCI FormatO is also attempted to decode a DCI Format3 by using the Transmitter Power Control-Physical Uplink Shared CHannel-Radio Network Temporary Identifier (TPC-PUSCH-RNTI) of the UE.
  • TPC-PUSCH-RNTI Transmitter Power Control-Physical Uplink Shared CHannel-Radio Network Temporary Identifier
  • the UE uses only the TPC command USCH given by the DCI FormatO;
  • ⁇ PUSCH 0 dB
  • the UE in the following state needs to reset the accumulation of TPC commands:
  • ⁇ PUSCH (' ⁇ - K PuscH ) is indicated by the PDCCH with DCI format 0 in subframe i - K PuscH;
  • the value of K PUSCH is determined as follows:
  • the X2 interface is overloaded with overload indicator (01) information.
  • the 01 parameter is an overload indication, which is used to indicate to the neighboring cells which PRB has a problem of excessive interference.
  • the 014 report has three levels, each PRB is represented by two bits, and the minimum update time is 20ms.
  • the parameter P CMAX P O_PUSCH "C/), ⁇ ) and / () are configured by the base station, m PUSCH « is determined by scheduling, and the UE is only responsible for the measurement of the downlink path loss.
  • the base station is responsible for the determination of P. -PUSCH ), "( ⁇ /), and .
  • the power control algorithm of the uplink puscH is actually the two parts of the open loop working point setting and the closed loop power control algorithm.
  • the target SINR needs to be used when determining f(i).
  • SINR Interference plus Noise Ratio
  • the expected target SINR on the e B side can be expressed as:
  • SINR (P 0 — HU) + . PL + /(' ⁇ ) - PL) -(I + N)
  • the uplink received power of the UE can be obtained by the base station measurement, and the uplink transmit power of the UE can be obtained through the PHR (Power Headroom Report), as follows:
  • Upstream total interference I+N can be expressed as:
  • N (- ⁇ 74dBm / Hz + 10 * lg(l SOkHz) + Noise Figure up ) + IoT up
  • No ⁇ RgMr is the noise index, generally takes the value of 7; /o is the interference tolerance corresponding to each PRB, the purpose is to control the interference size of the neighboring cell of the user in the cell, and the current parameter is fixed.
  • the value or base station is set according to the IoT measured by itself in real time.
  • the current uplink PUSCH power control does not take into account the influence of the interference between adjacent cells, but only considers the fixed interference or the measured interference of the base station itself.
  • the method of power control based on fixed interference is not suitable for different scenarios.
  • the method for performing power control by the base station according to the measured interference of the base station does not require interaction information between the base stations, but because the neighboring area is too large or too small for the local area, the area is boosted or reduced in power, and then the neighboring area is interfered. Too large or too small, so that the neighboring area can raise or lower the power, and then react to the area, causing a vicious circle, which makes the system unstable and appears to gradually increase or decrease, which has an impact on system performance, especially on the edge. User performance has a large impact.
  • Embodiments of the present invention provide a PUSCH power control method and apparatus to implement power control according to interference between adjacent cells.
  • An embodiment of the present invention provides a PUSCH power control method, including:
  • the number of each interference level in the interference level information of each neighboring cell is counted, and the physical uplink shared channel PUSCH power of the current cell user is adjusted according to the statistical result.
  • the embodiment of the present invention provides a PUSCH power control method and apparatus, which determines the interference of the neighboring cell by the interference level information sent by the neighboring cell, and then adjusts the PUSCH power of the current cell user, thereby implementing the neighboring cell. Power control between the cells is disturbed.
  • the interference level information is specifically:
  • the number of each of the interference levels in the interference level information of each neighboring cell is counted, and the physical uplink shared channel PUSCH power of the current cell user is adjusted according to the statistical result, which specifically includes:
  • the interference value of the current cell user to the neighboring cell is determined according to the interference level information of each neighboring cell:
  • n may also be a medium or high number of interference levels in the interference level of each neighboring cell
  • p may also be a low interference level among the interference levels of each neighboring cell.
  • estimateloTl can also be the estimated value of the medium or high level of the preset interference level
  • the estimateloTl can also be the estimated value of the low or medium corresponding to the preset interference level, where n and t mate
  • the meaning of / ⁇ is the same, p and e ⁇ mate/oJ 2 have the same meaning.
  • the specific setting method is flexible depending on the application environment, and is no longer mentioned here.
  • the interference value of the current cell user to the neighboring cell is determined according to the interference level information of each neighboring cell:
  • IoTm ' t " m + n + p where is the number of the middle of the interference level in each neighborhood, "For the number of disturbances in each neighborhood, the number of disturbances is low, P is the neighbors The number of the interference level in the area's disturbance level is high, ⁇ t mate/oJl is the estimated value corresponding to the preset disturbance level, and estimateloTl is the estimated value corresponding to the preset disturbance level, 7 ⁇ "For the preset target interference value;
  • m may also be the number of low or high interference levels in the interference level of each neighboring area, and n may also be the middle of the interference level of each neighboring area.
  • P can also be the number of low or medium interference levels in the interference level of each neighborhood
  • estimateIoT ⁇ can also be the estimated value of the medium or high corresponding preset interference level
  • estimateloTl also It may be a preset low or medium corresponding estimate of the interference level, where n has the same meaning as t mate/ ⁇ , p and e ⁇ mate/oJ 2 have the same meaning, and the specific setting manner is flexible depending on the application environment. Adjustment, no longer here - repeat.
  • the adjusting the PUSCH power of the current cell user according to the interference value of the current cell user to the neighboring cell specifically includes: Updating a power compensation factor or a normalized expected received power spectral density ⁇ according to the current cell user's interference value to the neighboring cell.
  • the PUSCH /) or the UE expects to receive the power spectral density offset puseH / ') or the gain A TF (/) parameter or the target SINR parameter of the transmission format;
  • the adjusting the PUSCH power of the current cell user according to the interference value of the current cell user to the neighboring cell specifically includes:
  • the corrected target SINR is sent to the user who needs power adjustment by the closed loop transmission power control TPC command word.
  • the user who needs to perform power adjustment is determined according to one of the factors such as the A3 event, the spectral efficiency, and the difference in the path loss of the neighboring cell, or the combination of any of the factors, wherein the user who needs to perform the power adjustment is specifically: the current cell All users; or
  • the method further includes:
  • the interference level of the neighboring cell to the current cell is less than or equal to a preset first threshold, determining that the interference level is low, when the interference level of the neighboring cell to the current cell is greater than a preset second Determining the interference level is high when the threshold is high.
  • the interference level of the neighboring cell to the current cell is greater than the first threshold and less than or equal to the second threshold, determining that the interference level is medium;
  • the measuring the interference level of the neighboring cell to the current cell includes:
  • An embodiment of the present invention provides a PUSCH power control apparatus, including: a receiving unit, configured to receive the interference level information sent by the neighboring area;
  • the adjusting unit is configured to count the number of each interference level in the interference level information of each neighboring area, and adjust the physical uplink shared channel PUSCH power of the current cell user according to the statistical result.
  • the embodiment of the present invention provides a PUSCH power control method and apparatus, which determines the interference of the neighboring cell by the interference level information sent by the neighboring cell, and then adjusts the PUSCH power of the current cell user, thereby implementing the neighboring cell. Power control between the cells is disturbed.
  • the interference level information is specifically:
  • the adjusting unit is specifically configured to:
  • the number of the interference levels in each neighborhood is counted, the number of the interference level is high, the number of the interference level is low, and the number of the interference level is equal, and the PUSCH power of the current cell user is adjusted according to the statistical result.
  • the adjusting unit counts the number of the interference levels in the neighboring areas, the number of the interference level is high, and the number of the interference level is low, and adjusts the PUSCH power of the current cell user according to the statistical result, which specifically includes:
  • the interference value of the current cell user to the neighboring cell is determined according to the interference level information of each neighboring cell:
  • estimateloTl is the preset priority of the disturbance level.
  • the estimated value, estimateloTl is an estimated value corresponding to the preset high interference level, and 7 ⁇ " is a preset target interference value;
  • n may also be a medium or high number of interference levels among the interference levels of each neighboring cell
  • P may also be a low interference level among the interference levels of each neighboring cell.
  • estimateloTl can also be the estimated value of the medium or high level of the preset interference level
  • the estimateloTl can also be the estimated value of the low or medium corresponding to the preset interference level, where n and t mate
  • the meaning of / ⁇ is the same, p and e ⁇ mate/oJ 2 have the same meaning.
  • the specific setting method is flexible depending on the application environment, and is no longer mentioned here.
  • the interference value of the current cell user to the neighboring cell is determined according to the interference level information of each neighboring cell:
  • m + n + p is the number of moderate disturbance levels in the perturbation level of each neighborhood, "in the interference level of each neighborhood The number of the interference level is low, P is the number of the interference level in the interference level of each neighboring area, ⁇ t mate/oJl is the estimated value corresponding to the preset interference level low, estimateloTl is preset The estimated value corresponding to the high interference level, 7; is the preset target interference value;
  • m may also be the number of low or high interference levels in the interference level of each neighboring area, and n may also be the middle of the interference level of each neighboring area.
  • P can also be the number of low or medium interference levels in the interference level of each neighborhood
  • estimateIoT ⁇ can also be the estimated value of the medium or high corresponding preset interference level
  • estimateloTl also It may be a preset low or medium corresponding estimate of the interference level, where n has the same meaning as t mate/ ⁇ , p and e ⁇ mate/oJ 2 have the same meaning, and the specific setting manner is flexible depending on the application environment. Adjustment, no longer here - repeat.
  • the adjusting unit adjusts the PUSCH power of the current cell user according to the interference value of the current cell user to the neighboring cell, which specifically includes:
  • the PUSCH /) or the UE expects to receive the power spectral density offset puseH / ') or the gain A TF (/) parameter or the target SINR parameter of the transmission format;
  • the relevant parameters for calculating the ratio SINR of the target signal to the wireless plus noise are updated;
  • the updated relevant parameter for calculating the target SINR is transmitted to the user who needs to perform power adjustment by the RRC signaling, and the target SINR is updated according to the updated related parameter for calculating the target SINR.
  • the adjusting unit adjusts the PUSCH power of the current cell user according to the interference value of the current cell user to the neighboring cell, which specifically includes:
  • the corrected target SINR is sent to the user who needs power adjustment by the closed loop transmission power control TPC command word.
  • the adjusting unit determines a user who needs to perform power adjustment based on one of factors such as an A3 event, a spectral efficiency, and a difference in path loss between the neighboring area, or any factor, where the user who needs to perform power adjustment is determined to be specific. For:
  • the method further includes:
  • a sending unit configured to measure a level of interference of a neighboring cell to a current cell; and a level of interference of the neighboring cell to a current cell
  • the interference level is determined to be low.
  • the interference level of the neighboring cell to the current cell is greater than a preset second threshold, the interference level is determined to be high.
  • the interference level of the neighboring cell to the current cell is greater than the first threshold and less than or equal to the second threshold, determining that the interference level is medium; sending the interference level information to the neighboring cell.
  • the sending unit measures the interference level of the neighboring cell to the current cell, and specifically includes:
  • An embodiment of the present invention provides a PUSCH power control apparatus, including:
  • a receiving port configured to receive the interference level information sent by the neighboring area
  • the processor is configured to count the number of each interference level in the interference level information of each neighboring cell, and adjust the physical uplink shared channel PUSCH power of the current cell user according to the statistical result.
  • the embodiment of the present invention provides a PUSCH power control method and apparatus, which determines the interference of the neighboring cell by the interference level information sent by the neighboring cell, and then adjusts the PUSCH power of the current cell user, thereby implementing the neighboring cell. Power control between the cells is disturbed.
  • the interference level information is specifically:
  • the processor is specifically configured to:
  • the number of the interference levels in each neighborhood is counted, the number of the interference level is high, the number of the interference level is low, and the number of the interference level is equal, and the PUSCH power of the current cell user is adjusted according to the statistical result.
  • the processor counts the number of the interference levels in the neighboring areas, the number of the interference level is high, and the number of the interference level is low, and the PUSCH power of the current cell user is adjusted according to the statistical result, which specifically includes:
  • the interference value of the current cell user to the neighboring cell is determined according to the interference level information of each neighboring cell:
  • estimateloTl is an estimated value corresponding to a preset low interference level
  • estimateloTl is an estimated value corresponding to a preset high interference level
  • 7 ⁇ is a preset target interference value
  • n can also be the interference level in the interference level of each neighboring cell.
  • the number of medium or high, P can also be the number of low or medium interference levels in the interference level of each neighboring area.
  • the estimateloTl can also be the estimated value of the medium or high level of the preset interference level, estimateloTl It may be a preset low or medium corresponding estimate of the disturbance level, where n has the same meaning as t mate/ ⁇ , p and e ⁇ mate/oJ 2 have the same meaning, and the specific setting manner is flexible depending on the application environment. Adjustment, no longer here - repeat.
  • the interference value of the current cell user to the neighboring cell is determined according to the interference level information of each neighboring cell:
  • is the number of the interference levels among the interference levels of the respective neighboring areas, "the number of the interference levels in the interference level of each neighboring area, and P is the interference level in the interference level of each neighboring area. The number of levels is high, ⁇ t mate/oJl is the estimated value corresponding to the preset disturbance level low, estimateloTl is the estimated value corresponding to the preset disturbance level, 7; is the preset target interference Value
  • m may also be the number of low or high interference levels in the interference level of each neighboring area, and n may also be the middle of the interference level of each neighboring area.
  • P can also be the number of low or medium interference levels in the interference level of each neighborhood
  • estimateIoT ⁇ can also be the estimated value of the medium or high corresponding preset interference level
  • estimateloTl also It may be a preset low or medium corresponding estimate of the interference level, where n has the same meaning as t mate/ ⁇ , p and e ⁇ mate/oJ 2 have the same meaning, and the specific setting manner is flexible depending on the application environment. Adjustment, no longer here - repeat.
  • the processor adjusts the PUSCH power of the current cell user according to the interference value of the current cell user to the neighboring cell, which specifically includes:
  • the PUSCH /) or the UE expects to receive the power spectral density offset puseH / ') or the gain A TF (/) parameter or the target SINR parameter of the transmission format;
  • the relevant parameters for calculating the ratio SINR of the target signal to the wireless plus noise are updated;
  • the updated relevant parameter for calculating the target SINR is transmitted to the user who needs to perform power adjustment by the RRC signaling, and the target SINR is updated according to the updated related parameter for calculating the target SINR.
  • the processor adjusts the PUSCH power of the current cell user according to the interference value of the current cell user to the neighboring cell, which specifically includes:
  • the corrected target SINR is transmitted to the user who needs to perform power adjustment by the closed loop transmission power control TPC command word.
  • the processor determines a user that needs to perform power adjustment based on one of a factor of A3 event, spectrum efficiency, and a difference in path loss between the neighboring area, or any factor, where the user that needs to perform power adjustment is determined. For:
  • a sending port configured to measure a level of interference of the neighboring cell to the current cell; when the interference level of the neighboring cell to the current cell is less than or equal to a preset first threshold, determining that the interference level is low, when When the interference level of the neighboring cell to the current cell is greater than a preset second threshold, determining that the interference level is high, when the interference level of the neighboring cell to the current cell is greater than the first threshold and less than or equal to the At the second threshold, the interference level is determined to be medium; the interference level information is sent to the neighboring area.
  • the sending port measures the interference level of the neighboring cell to the current cell, and specifically includes:
  • FIG. 1 is a flowchart of a PUSCH power control method according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a first structure of a PUSCH power control apparatus according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a second structure of a PUSCH power control apparatus according to an embodiment of the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.
  • the embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • the embodiment of the invention provides a PUSCH power control method and device, which determines the interference of the neighboring cell by using the interference level information sent by the neighboring cell, and then adjusts the PUSCH power of the current cell user, thereby realizing Power control is performed according to interference between adjacent cells.
  • the PUSCH power control method provided by the embodiment of the present invention includes:
  • Step S101 Receive interference level information sent by the neighboring area.
  • Step S102 Count the number of each interference level in the interference level information of each neighboring cell, and adjust the PUSCH power of the current cell user according to the statistical result.
  • the PUSCH power control method provided by the embodiment of the present invention determines the uplink power or the power down according to the 01 information indicating the interference level that is transmitted to the local area in the neighboring area, that is, if the 01 information transmitted by the neighboring area is lower, indicating that the area is adjacent to the neighboring area. If the interference is small, the area can be up-regulated and the user performance can be improved. If the 01 information transmitted by the neighboring area is high, indicating that the area has a large disturbance to the neighboring area, the area can be appropriately adjusted to reduce the power. Thousands of disturbances.
  • the information of the interference level is specifically: a symbol indicating a low level of interference, a medium level of interference, or a high level of interference. For example, 0, 1, and 2 can be used to indicate that the disturbance level is low, the disturbance level is medium, and the disturbance level is high.
  • a cell usually has multiple neighboring cells, and each of the neighboring cells may have different levels of interference.
  • step S102 the number of each level of interference in each of the neighboring regions is counted, and the current level is adjusted according to the statistical result.
  • PUSCH power specifically includes:
  • the number of the interference levels in each neighborhood is counted, the number of the interference level is high, the number of the interference level is low, and the number of the interference level is equal, and the PUSCH power of the current cell user is adjusted according to the statistical result.
  • the number of the interference levels in the neighboring cells is high, and the number of the interference level is low, and the PUSCH power of the current cell user is adjusted according to the statistical result, which specifically includes:
  • the interference value of the current cell user to the neighboring cell is determined according to the interference level information of each neighboring cell:
  • estimateloTl is a preset level of low interference.
  • the estimated value, estimateloTl is an estimated value corresponding to the preset high interference level, and 7 ⁇ " is a preset target interference value;
  • n may also be a medium or high number of interference levels among the interference levels of each neighboring cell
  • P may also be a low interference level among the interference levels of each neighboring cell.
  • the number of or high, estimateIoT ⁇ can also be the estimated value of the medium or high level of the preset interference level
  • the estimateloTl can also be the estimated value of the low or medium corresponding to the preset interference level, among them!
  • ⁇ mate/oJl has the same meaning
  • p and e ⁇ mate/oJ 2 have the same meaning.
  • the specific setting method is flexible depending on the application environment, and is no longer mentioned here.
  • the number of disturbances in the neighborhood is statistically high, the number of disturbances is high, and the number of disturbances is low. Adjusting the PUSCH power of the current cell user according to the statistics, which specifically includes:
  • the interference value of the current cell user to the neighboring cell is determined according to the interference level information of each neighboring cell:
  • IoTmler m + n + p where is the number of the interference levels in the interference level of each neighboring area, "the number of the interference levels in the interference level of each neighboring area, P is the number of each neighboring area The number of disturbance levels in the disturbance level is high, the estimated value corresponding to the low disturbance level set by estimatdoTH, estimateloTl is the estimated value corresponding to the preset disturbance level, 7; is the preset target interference value ;
  • m may also be the number of low or high interference levels in the interference level of each neighboring area, and n may also be the middle of the interference level of each neighboring area.
  • P can also be the number of low or medium interference levels in the interference level of each neighborhood
  • estimateIoT ⁇ can also be the estimated value of the medium or high corresponding preset interference level
  • estimateloTl also It may be a preset low or medium corresponding estimate of the interference level, where n has the same meaning as tmate/ ⁇ , p and e ⁇ mate/oJ 2 have the same meaning, and the specific setting mode is flexible depending on the application environment. , no longer here - repeat.
  • the PUSCH power of the current cell user is adjusted according to the interference value of the current cell user to the neighboring cell.
  • estimateIoT ⁇ e matefoJ2 and /o7 ⁇ gei are preset values. If IoT t rget is set to 10dB, it can be set to 5dB, and e matefoJ2 can be set to 15dB.
  • the PUSCH power of the current cell user is adjusted according to the interference value of the current cell user to the neighboring cell, which specifically includes:
  • the updated relevant parameter for calculating the target SINR is sent to the user who needs to perform power adjustment by RRC signaling, and the target SINR is updated according to the updated relevant parameter for calculating the target SINR.
  • ⁇ 0 U.
  • the interference value of the neighboring area is corrected.
  • the specific correction method can be
  • the target SINR may be adjusted after the target SINR is determined.
  • the PUSCH power of the current cell user is adjusted according to the current cell user's interference value to the neighboring cell, including:
  • the target SINR is corrected according to the current cell user's interference value to the neighboring cell;
  • the corrected target SINR is sent to the user requiring power adjustment via the closed loop TPC command word.
  • the corrected target SINR is M ⁇ M ⁇ , - ⁇ , where SINR t get is the target SINR before the correction, and MoT mr is the interference value of the current cell user to the neighboring cell.
  • the RRC signaling is used to notify the user of the power adjustment, the RRC signaling used is more, and the air interface resources are occupied. However, the adjustment is performed in this manner, and the amplitude of the single adjustment is large; if the user is notified by the closed loop TPC command word The way to adjust the power, the amplitude of a single adjustment is small, and multiple adjustments are needed to obtain a significant effect.
  • the interference in the neighboring area is obtained through the load interaction information, the accuracy is limited, and the minimum period of the X2 interface is 20 ms. Considering the saving of the X2 interface information, the power control of the small interval is slower than the power control in the cell.
  • the power adjustment target may be all users in the cell, or may be some users in the cell. Therefore, preferably, it may be determined based on one of factors such as A3 event, spectral efficiency, and difference in path loss of the neighboring cell or any factor combination.
  • the user who needs to perform power adjustment, wherein the user who needs to perform power adjustment is specifically:
  • the method further includes:
  • the interference level of the neighboring cell to the current cell is less than or equal to the preset first threshold, determining that the interference level is low, when the interference level of the neighboring cell to the current cell is greater than a preset second threshold, determining The interference level is high.
  • the interference level of the neighboring cell to the current cell is greater than the first threshold and less than or equal to the second threshold, the interference level is determined to be medium; the interference level information is sent to the neighboring cell.
  • the information required for the power control is the system IoT of the neighboring cell (the interference level of the neighboring cell to the current cell)
  • the interference level of the neighboring cell to the current cell there are two solutions for determining the interference level, as follows:
  • Solution 1 The base station separately measures the interference value of the neighboring cell in each PRB to the current cell, and uses the average value of the interference value of the neighboring cell in each PRB to the current cell as the interference level of the neighboring cell in each PRB to the current cell, that is, Base station will each
  • the average value of the interference value of the neighboring cell in the PRB to the current cell is used as the system IoT, and compared with the preset threshold value, the interference level is determined, and the 01 values obtained on all the PRBs are the same.
  • the base station of the neighboring area can directly select the preset IoT estimation value according to the 01 value.
  • Solution 2 The base station separately measures the interference value of the neighboring cell in each PRB to the current cell, and uses the measured interference value of each neighboring cell to the current cell as the interference level of the neighboring cell in each PRB to the current cell;
  • the IoT on each PRB is measured and compared to a preset threshold to determine the interference level, respectively.
  • the base station of the neighboring area receives the interference level determined by the method, and needs to calculate the average value of the interference level according to the received interference level on each PRB, and then select the preset according to the average value of the interference level.
  • the estimated IoT value is the estimated IoT value.
  • the preset threshold values are thresholedl and thresholed2.
  • the JL thresholedK thresholed2 0 threshold can be configured by the Operation and Maintenance (O&M).
  • the interference level corresponding to the IoT value is low
  • the IoT value corresponds to a disturbance level of medium; if the measured IoT>thresholed2, the IoT value corresponds to a high interference level.
  • the interference level can be delivered to the neighbor through the X2 interface LOAD INFORMATION message.
  • the period trigger or period plus event trigger can be used.
  • the period triggers, that is, periodically counts the neighboring area and transmits the interference information to the neighboring area.
  • the period plus event triggers that is, the periodic statistics of the neighboring area is disturbed. If the interference is greater than a certain threshold or the interference is less than a certain threshold, then the interference information 01 is transmitted to the neighboring area.
  • the embodiment of the present invention further provides a PUSCH power control apparatus.
  • the apparatus includes: a receiving unit 201, configured to receive interference level information sent by a neighboring area;
  • the adjusting unit 202 is configured to count the number of each interference level in the interference level information of each neighboring cell, and adjust the PUSCH power of the current cell user according to the statistical result.
  • the device may be specifically a base station or a relay node, where the base station includes a macro base station (Mac), a micro base station (Micro), a pico base station (Pico), a home base station or a femto base station (Femto), and the like.
  • Mac macro base station
  • Micro micro base station
  • Pico pico base station
  • Hemto femto base station
  • Other possible wireless access points (APs) in TDD mode include a base station or a relay node, where the base station includes a macro base station (Mac), a micro base station (Micro), a pico base station (Pico), a home base station or a femto base station (Femto), and the like.
  • APs wireless access points
  • the interference level information is specifically:
  • the adjusting unit 202 is specifically configured to:
  • the number of the interference levels in each neighborhood is counted, the number of the interference level is high, the number of the interference level is low, and the number of the interference level is equal, and the PUSCH power of the current cell user is adjusted according to the statistical result.
  • the adjusting unit 202 is configured to count the number of the interference level in the neighboring area, the number of the interference level is high, and the number of the interference level is low, and adjust the PUSCH power of the current cell user according to the statistical result, which specifically includes:
  • the interference value of the current cell user to the neighboring cell is determined according to the interference level information of each neighboring cell: n . (estimateloTl - IoT t et ) + p - estimateloTl
  • n + p where, "for the number of disturbances in each neighborhood, the number of disturbances is low, p is the number of disturbances in each neighborhood's disturbance level, and stimateloTl is the preset disturbance level.
  • the low corresponding estimated value, estimateloTl is an estimated value corresponding to the preset high interference level, and 7 ⁇ " is a preset target interference value;
  • n may also be a medium or high number of interference levels among the interference levels of each neighboring cell
  • P may also be a low interference level among the interference levels of each neighboring cell.
  • estimateloTl can also be the estimated value of the medium or high level of the preset interference level
  • the estimateloTl can also be the estimated value of the low or medium corresponding to the preset interference level, where the meaning of n and Consistently, p and e ⁇ mate/oJ 2 have the same meaning.
  • the specific setting method is flexible depending on the application environment, and is no longer mentioned here.
  • the adjusting unit 202 is configured to count the number of the interference level in the neighboring area, the number of the interference level is high, and the number of the interference level is low, and adjust the PUSCH power of the current cell user according to the statistical result, which specifically includes:
  • the interference value of the current cell user to the neighboring cell is determined according to the interference level information of each neighboring cell:
  • m may also be the number of low or high interference levels in the interference level of each neighboring area, and n may also be the middle of the interference level of each neighboring area.
  • P can also be the number of low or medium interference levels in the interference level of each neighborhood
  • estimateIoT ⁇ can also be the estimated value of the medium or high corresponding preset interference level
  • estimateloTl also It may be a preset low or medium corresponding estimate of the disturbance level, where n has the same meaning as t mate/oJl, p and e ⁇ mate/oJ 2 have the same meaning, and the specific setting manner is flexible depending on the application environment. Adjustment, no longer here - repeat.
  • the PUSCH power of the current cell user is adjusted according to the interference value of the current cell user to the neighboring cell.
  • the adjusting unit 202 adjusts the PUSCH power of the current cell user according to the interference value of the current cell user to the neighboring cell, and specifically includes:
  • the updated relevant parameter for calculating the target SINR is transmitted to the user who needs to perform power adjustment by RRC signaling, and the target SINR is updated according to the updated related parameter for calculating the target SINR.
  • the adjusting unit 202 adjusts the PUSCH power of the current cell user according to the interference value of the current cell user to the neighboring cell, and specifically includes:
  • the target SINR is corrected according to the current cell user's interference value to the neighboring cell;
  • the corrected target SINR is sent to the user requiring power adjustment via the closed loop TPC command word.
  • the adjusting unit 202 determines a user that needs to perform power adjustment based on one of a factor of A3 event, a spectral efficiency, and a difference in the path loss of the neighboring cell, or a combination of any factors, where the user who needs to perform power adjustment is specifically:
  • the device further includes:
  • a sending unit configured to measure a interference level of the neighboring cell to the current cell; when the interference level of the neighboring cell to the current cell is less than or equal to a preset first threshold, determining that the interference level is low, when the neighboring cell is current When the interference level of the cell is greater than a preset second threshold, determining that the interference level is high. When the interference level of the neighboring cell to the current cell is greater than the first threshold and less than or equal to the second threshold, determining the interference level is Medium; Sends the interference level information to the neighboring area.
  • the sending unit measures the interference level of the neighboring cell to the current cell, and specifically includes:
  • the interference value of the neighboring cell in each PRB to the current cell is measured, and the average value of the interference value of the neighboring cell in each PRB to the current cell is used as the interference level of the neighboring cell to the current cell.
  • the embodiment of the present invention further provides a PUSCH power control apparatus, as shown in FIG. 3, which specifically includes: a receiving port 301, configured to receive the interference level information sent by the neighboring area;
  • the processor 302 is configured to count the number of each interference level in the interference level information of each neighboring cell, and adjust the physical uplink shared channel PUSCH power of the current cell user according to the statistical result.
  • the interference level information is specifically:
  • the processor 302 is specifically configured to:
  • the processor 302 counts the number of the interference levels in the neighboring areas, the number of the interference level is high, and the number of the interference level is low, and adjusts the PUSCH power of the current cell user according to the statistical result, which specifically includes:
  • the interference value of the current cell user to the neighboring cell is determined according to the interference level information of each neighboring cell:
  • estimateloTl is the preset priority of the disturbance level.
  • the estimated value, estimateloTl is an estimated value corresponding to the preset high interference level, and 7 ⁇ " is a preset target interference value;
  • n may also be a medium or high number of interference levels among the interference levels of each neighboring cell
  • P may also be a low interference level among the interference levels of each neighboring cell.
  • estimateloTl may also be an estimated value corresponding to a medium or high level of the preset interference level
  • estimateloTl may also be a preset value of a low or medium corresponding to the preset interference level, where n and t mate
  • the meaning of / ⁇ is the same, p and e ⁇ mate/oJ 2 have the same meaning.
  • the specific setting method is flexible depending on the application environment, and is no longer mentioned here.
  • the processor 302 counts the number of the interference levels in the neighboring areas, the number of the interference level is high, and the number of the interference level is low, and adjusts the PUSCH power of the current cell user according to the statistical result, which specifically includes:
  • the interference value of the current cell user to the neighboring cell is determined according to the interference level information of each neighboring cell:
  • m may also be the number of low or high interference levels in the interference level of each neighboring area, and n may also be the middle of the interference level of each neighboring area.
  • P can also be the number of the interference level in each neighborhood's interference level is low or high
  • estimateIoT ⁇ can also be the preset value of the medium or high corresponding to the interference level
  • estimateloTl also It may be a preset low or medium corresponding estimate of the interference level, where n has the same meaning as t mate/ ⁇ , p and e ⁇ mate/oJ 2 have the same meaning, and the specific setting manner is flexible depending on the application environment. Adjustment, no longer here - repeat.
  • the PUSCH power of the current cell user is adjusted according to the interference value of the current cell user to the neighboring cell.
  • the processor 302 adjusts the PUSCH power of the current cell user according to the current cell user's interference value to the neighboring cell, which specifically includes: Updating the power compensation factor "c or the normalized expected received power spectral density P PUSCH /) or the UE expected received power spectral density offset puseH / ') or the gain of the transmission format according to the current cell user's interference value to the neighboring cell ⁇ ⁇ (/) parameter or target SINR parameter;
  • the relevant parameters for calculating the ratio SINR of the target signal to the wireless plus noise are updated;
  • the processor 302 adjusts the PUSCH power of the current cell user according to the current cell user's interference value to the neighboring cell, which specifically includes:
  • the target SINR is corrected according to the current cell user's interference value to the neighboring cell;
  • the corrected target SINR is sent to the user who needs power adjustment by the closed loop transmission power control TPC command word.
  • the processor 302 determines a user who needs to perform power adjustment based on one of factors such as an A3 event, a spectral efficiency, and a difference in the path loss of the neighboring cell, or a combination of any factors, where the user who needs to perform power adjustment is specifically :
  • the method further includes:
  • a sending port configured to measure a level of interference of the neighboring cell to the current cell; when the interference level of the neighboring cell to the current cell is less than or equal to a preset first threshold, determining that the interference level is low, when the neighboring cell is current When the interference level of the cell is greater than a preset second threshold, determining that the interference level is high. When the interference level of the neighboring cell to the current cell is greater than the first threshold and less than or equal to the second threshold, determining the interference level is Medium; Sends the interference level information to the neighboring area.
  • the sending port measures the interference level of the neighboring cell to the current cell, and specifically includes:
  • the interference value of the neighboring cell in each PRB to the current cell is measured, and the average value of the interference value of the neighboring cell in each PRB to the current cell is used as the interference level of the neighboring cell to the current cell.
  • the embodiment of the present invention provides a PUSCH power control method and apparatus, which determines the interference of the neighboring cell by the interference level information sent by the neighboring cell, and then adjusts the PUSCH power of the current cell user, thereby implementing the neighboring cell. Power control between the cells is disturbed.
  • embodiments of the present invention can be provided as a method, system, or computer program.
  • Product may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware.
  • present invention is in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

公开了一种PUSCH功率控制方法及装置,涉及通信技术,本发明实施例通过邻区发送的干扰等级信息来确定自身对邻区的干扰情况,进而对当前小区用户的PUSCH功率进行调整,从而实现根据相邻小区之间干扰进行功率控制。

Description

一种 PUSCH功率控制方法及装置 本申请要求在 2013年 6月 28日提交中国专利局、 申请号为 201310269628.7、 发明名称为
"一种 PUSCH功率控制方法及装置"的中国专利申请的优先权, 其全部内容通过引用结合在本 申请中。
技术领域 本发明涉及通信技术, 尤其涉及一种 PUSCH功率控制方法及装置。 背景技术
长期演进 ( Long Term Evolution, LTE ) 系统以正交频分复用 (Orthogonal Frequency Division Multiplexing, OFDM )技术为基础进行分组数据传输, 当各小区釆用同频组网时, 需要执行功率控制过程避免小区之间的千扰过高。
根据发送功率是由发送方决定还是由接收方决定, 可以将功率控制分为开环功率控制 和闭环功率控制两类。 由发送端基于自身对信道的认识来决定其发送功率的方式被称为开 环功率控制。 开环功率控制的好处是不需要额外的信令开销; 但缺点是发送端对信道的理 解往往与实际存在着偏差, 因此基于对信道认识不准确的开环功率控制通常并不准确。 由 接收方决定发送端的发送功率的方式就被称为闭环功率控制。 闭环功率控制的好处是接收 端可以根据其实际的接收信号盾量, 来决定发送端的发送功率, 功率调整比较精确; 缺点 是需要额外的信令开销。
标准上描述的用户设备( User Equipment, UE )在子帧 i发送物理上行共享信道( Physical Uplink Shared Channel, PUSCH )的一个 OFDM符号上的发送功率 PPUSCH由下面公式确定:
^PUSCH ('■) = min{ CMAX , 101og10( PUSCH( ) +尸0 + ATF ( ) + ( )}
带宽因子 基本开环二作点 闭环部分 [dBm] 其巾,
p 1 CMAX - 是由 UE允许的最大发射功率;
PUSCH( ;
是第 i个子帧为 PUSCH分配的带宽大小, 以物理资源块(PRB )数目表示;
P。 PUSCH 0) .
由 Sbit的小区专属归一化部分 P。― PUSCTI(J')和 4bit的 UE专属部分 P。― puseH ( 之 和组成。 其中, ΡΟ ΝΟΪΡυ5αι(_/·) ( j=0或 1 )和 Ρ。-™- Η( 或 ^ 由无线资源控制 (Radio Resource Control, RRC )层配置。 如果 PUSCH初传 /重传对应的资源是半持续调 度上行许可( Semi-Persistent Scheduling Uplink-grant, SPS UL-grant ),那么 j=0;如果 PUSCH 初传 /重传使用的资源是动态调度的 UL-grant, 那么 j=l。 即对动态调度的 PUSCH和持续 调度的 PUSCH使用两套不同的功率控制参数,这两套参数分别通过不同的 RRC层通知元 素(Information element, IE)进行配置。 对于随机接入消息 3 ( message3 , MSG3 )的重传 或初传 , ]—2 , it匕时 >o_UE_PUSCH (2) = 0并且 ^>o_NOMINAL_PUSCH (^) ~ ^0_PRE + ,其中 ^0_PRE和 ™SJ ^均由 RRC层配置;
"(_/')
是功率补偿因子, 』=0或 1时, {0, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1} , 是一个 3bit的小区 级参数, 由 RRC层信令配置。 j=2时, a( ) = l;
PL (Path Loss, 路损):
是 UE测量的下行路径损耗,单位是 dB , PL = referenceSignalPower - higher layer filtered RSRP, 其中 referenceSignalPower由 RRC层配置; 是传输格式的增益, 表示是否根据不同的调制解码配置 (Modulation and Coding Scheme, MCS )等级对发送功率谱密度( Power Spectrum Density, PSD )进行调整。 Ks =1.25 时, ATF() = 101ogl。((2 - 1)CD; Ks^0H, = 其中, 是 UE专属参数, 由 RRC信令 deltaMCS-Enabled指示。
此外, 在公式中, 当 PUSCH传送的数据中没有上行同步信道( Uplink-Synchronization Channel, UL-SCH)数据,只有控制数据时, MPR = OC I NRE 其它情况下, MPR ^IN , 其中, C是码块数目, 是第 个码块的长度, Oce/是包含 CRC( Cyclic Redundancy Check, 循环冗余校验) 比特在内的下行链路盾量反馈信息 (Channel Quality Indication, CQI) 比 特数目, WRE是资源单元 RE 的总数, 定义为 = 1^^0-'«'^ .^ ^-11114131 , 其中 C, ,
Μ^«^— 。'和 ^^H-mtoi在 3Gpp标准 36212中定义, C , 和 M - ''"''。'都能够从传输 块的初次传输对应的物理下行控制信道(PDCCH) 中获得;
当 PUSCH传送的数据中没有 UL-SCH数据, 只有控制数据时, β Η = ; 其它情 况下' €Γ=ι;
f(i)
给出当前的 PUSCH功率控制调整状态, 其定义为:
1、 若通过 RRC层通知的 UE专属参数累积方式使能开关 ( Accumulation-enabled )开 启了累积值方式的功率控制, 或者传输功率控制 ( Transmitter Power Control, TPC )命令 字 USCH包含在下行控制消息( Downlink Control Information, DCI )版本 0 ( FormatO )并 且 CRC校验比特釆用小区无线网络临时标识 (Cell Radio Network Temporary Identifier, Temporary C-RNTI )加扰的 PDCCH, 则 /( ) = (/ - 1) + SPUSCH (i - KPUSCH );
其巾:
Figure imgf000004_0001
- ρκ ^子帧上的 DCI格式 0 或 3/3 A发送的 TPC命令, /(0) 是 _ )重置之后的初始值;
pracff的值: 对于频分双工 (Frequency Division Duplex, FDD ), KPUSCH = 4; 对于时 分双工上行 /下行 ( Time division duplex UpLink/DownLink, TDD UL/DL )配置 1-6 , Kp 值见表 1; 对于 TDD UL/DL配置 0 , 当由 PDCCH DCI格式 0调度的 PUSCH传输位于子 帧 2或 7且 DCI中的 UL index信息域的低比特位为 1时, 7; 对于其它情况的 PUSCH传输, Κρ 由表 1给出;
UE在每个非不连续接收(Discontinuous Reception, DRX )子帧用该 UE的 C-RNTI 或半持续调度 -无线网络临时标识 ( Semi-Persistent Scheduling -Radio Network Temporary Identifier, SPS-RNTI )尝试解码一个 DCI FormatO的 PDCCH, 同时也用该 UE的传输功率 控制 -物理上行共享信道 -无线网络临时标识 (Transmitter Power Control -Physical Uplink Shared CHannel -Radio Network Temporary Identifier, TPC-PUSCH-RNTI )尝试解码一个 DCI Format3/3A的 PDCCH;
如果 UE在同一子帧内同时检测到 DCI FormatO和 DCI Format3/3A的 PDCCH,则 UE 只使用由 DCI FormatO给出的 TPC命令 USCH;
当在某一子帧中没有解码出 TPC命令、 或 UE处于 DRX状态、 或在 TDD模式下第 i 个子帧不是上行子帧时, ^PUSCH = 0 dB;
当累积修正值 ^USCH dB包含在具有 DCI格式 0的 PDCCH时,其调整值见表 2; 但是, 如果 DCI FormatO的功能是 SPS激活或 SPS释放, 则 =0 dB;
当累积修正值 4uSCH dB包含在具有 DCI格式 3/3 A的 PDCCH时, 其调整值集合包括 两种: 集合 1由表 2错误! 未找到引用源。 给出、 集合 2由表 3给出, 具体选择哪个集合 由 RRC层参数 TPC-Index的比特数决定;
若 UE达到最大发射功率, 则 "正" 的 TPC命令不进行累积;
若 UE达到最小发射功率, 则 "负" 的 TPC命令不进行累积;
处于如下状态的 UE需要重新设置 TPC命令的累积:
当 ^0_UE_PUSCH改 时,
当收到随机接入响应消息时 (处于同步 /重同步状态)。
2、 若通过 RRC层配置的 UE专属参数 Accumulation-enabled 未开启累积值方式时, UE处于绝对值闭环方式, /( ) = PUSCH (i - PUSCH);
其巾:
^PUSCH ('■ - K PuscH )由子帧 i - K PuscH中的具有 DCI格式 0的 PDCCH指示; KPUSCH的值按如下方式确定:
对于 FDD, K PuscH =4;
对于 TDD UL/DL配置 1 -6 , Κ 值见表 1;
对于 TDD UL/DL配置 0, 当由 PDCCH DCI格式 0调度的 PUSCH传输位于子帧 2或 7且 DCI中的 UL index信息域的低比特位为 1时,那么 KPUSCH = 7;对于其它情况的 PUSCH 传输, praCT由表给出;
绝对值方式下的 ^USCH由具有 DCI格式 0的 PDCCH指示, ^PUSCH取值见错误!未找到 引用源。; 如果 DCIFormatO的功能是 SPS激活或 SPS释放则^ ^=() dB。
如果某个子帧中没有解码出具有 DCI formatO的 PDCCH、 或 UE处于 DRX状态、 或 在 TDD模式下第 i个子帧不是上行子帧时, /() = ( -1);
3、 对于两种 TPC调整值 /(*)计算方法(累积值方式或绝对值方式), 其初始值设置 为:
P。― υπ— PUSCH配置发生改变, /«=0; 否则' /(0) = ^^ + 2, 其中 ^2是随机接入 响应消息中指示的 TPC命令字, 参见表 4; AP 由 RRC层配置, 对应于从首次至最后 一次 preamble (前导码)传输之间总的功率爬升量。
表 1 不同 TDD UL/DL配置的 取值
Figure imgf000005_0001
表 2 DCI format 0/3 TPC命令字含义
Figure imgf000005_0002
表 3 DCI format 3ATPC命令字含义
Figure imgf000006_0002
表 4 用于调度的 PUSCH的 TPC命令字
Figure imgf000006_0003
同时, 标准上 X2接口交互过载指示 (overload indicator, 01)信息。
01参数为过载指示, 用来指示给邻小区哪些 PRB上发生了千扰过大的问题。 014艮告 有三个等级, 每个 PRB用两个 bit表示, 最小更新时间为 20ms。
在上行 PUSCH的发送功率计算公式中, 参数 PCMAX PO_PUSCH
Figure imgf000006_0001
"C/)、 Δ )和/ () 由基站配置, mPUSCH«由调度决定, UE仅负责下行路损 的测量。基站负责 P。-PUSCH )、 "(·/)、 和 的确定。上行 puscH的功率控制算法实际就是开环工作点的设置和闭 环功率控制算法两个部分。 其中确定 f(i)时需要使用目标 SINR。
现有上行 PUSCH功率控制一种目标信号与无线加噪声之比( Signal to Interference plus Noise Ratio, SINR )是通过理论计算确定的, 假设 S =0 , 那么, Δ^ ·) = 0 , 此时目标 SINR设置的具体方案如下:
e B侧期望的目标 SINR可以表示为:
SINR, = (P0— H U) + . PL + /('■) - PL) -(I + N)
上行路损 是 UE的上行发射功率与 UE的上行接收功率之差, 即 PJ = PTX - ^。 其 中, UE 的上行接收功率 ^可通过基站测量获得, UE 的上行发射功率 ^可通过 PHR ( Power Headroom Report, 功率空间上艮)获得, 如下所示:
PH () = PCMAX -{10 log10 (MPUSCH ()) + Ρ。 0) + (j) . PL + ΔΤΡ () + ()} [dB] p = \PCMAX -PH (i) PH (i) > 0
TX ~ \ 尸 c PH (i) < 上行总千扰 I+N可以表示为:
7 + N = (-\74dBm / Hz + 10 * lg(l SOkHz) + NoiseFigureup ) + IoTup
其中, No ^RgMr 是噪声指数, 一般取值为 7; /o 是对应每个 PRB的千扰容限, 目的是控制本小区用户对相邻小区的千扰大小, 目前此参数釆用固定取值或者基站根据自 身实时测量的 IoT进行设置。
可见, 目前的上行 PUSCH功率控制中没有考虑到相邻小区之间千扰的影响, 而仅考 虑到固定千扰或者基站自身实测的千扰。 根据固定千扰进行功率控制的方法筒单, 但不能 够适应不同场景。基站根据自身实测千扰进行功率控制的方法,不需要基站之间交互信息, 但是由于邻区对本区的千扰过大或过小, 使得本区提升或降低功率, 进而对邻区的千扰过 大或过小, 使得邻区提升或降低功率, 之后再反作用于本区, 造成恶性循环, 从而使得系 统千扰不稳定, 呈现逐渐上升或下降趋势, 对系统性能有影响, 特别是对边缘用户的性能 影响较大。 发明内容 本发明实施例提供一种 PUSCH功率控制方法及装置 以实现根据相邻小区之间千扰 进行功率控制。
本发明实施例提供一种 PUSCH功率控制方法, 包括:
接收邻区发送的千扰等级信息;
统计各个邻区的千扰等级信息中各个千扰等级的个数, 并根据统计结果调整当前小区 用户的物理上行共享信道 PUSCH功率。
本发明实施例提供一种 PUSCH功率控制方法及装置, 通过邻区发送的千扰等级信息 来确定自身对邻区的千扰情况, 进而对当前小区用户的 PUSCH功率进行调整, 从而实现 根据相邻小区之间千扰进行功率控制。
较佳的, 所述千扰等级信息具体为:
表示千扰等级低、 千扰等级中等或千扰等级高的符号。
较佳的, 所述统计各个邻区的千扰等级信息中各个千扰等级的个数, 并根据统计结果 调整当前小区用户的物理上行共享信道 PUSCH功率, 具体包括:
统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并根据统计结 果调整当前小区用户的 PUSCH功率; 或者
统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数以及千扰等级中 等的个数, 并根据统计结果调整当前小区用户的 PUSCH功率。
较佳的, 所述统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并根据统计结果调整当前小区用户的 PUSCH功率, 具体包括:
根据各个邻区的千扰等级信息, 确定当前小区用户对邻区的千扰值为:
n■ (estimateloTl - IoTt et) + p - estimateloTl - IoTt et ) 其中, "为各个邻区的千扰等级中千扰等级低的个数, P为各个邻区的千扰等级中千 扰等级高的个数, stimateloTl是预先设定的千扰等级低对应的估计值, estimateloTl是预 先设定的千扰等级高对应的估计值, /o7^gei为预先设定的目标千扰值;
当然, 上述公式仅为举例, 实际应用中, n也可以为各个邻区的千扰等级中千扰等级 中等或高的个数, p也可以为各个邻区的千扰等级中千扰等级低或中等的个数, estimateloTl也可以是预先设定的千扰等级中等或高对应的估计值, estimateloTl也可以是 预先设定的千扰等级低或中等对应的估计值, 其中, n和 t mate/οΠ的含义一致, p 和 e^mate/oJ2的含义一致, 具体设置方式视应用环境不同而灵活调整, 在此不再——赘述。
根据所述当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率; 所述统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并根据统 计结果调整当前小区用户的 PUSCH功率, 具体包括:
根据各个邻区的千扰等级信息, 确定当前小区用户对邻区的千扰值为:
n■ {estimateloTl - IoTt et) + p - (estimateloTl - IoTt et )
Δ
IoTm' t" m + n + p 其中, 为各个邻区的千扰等级中千扰等级中等的个数, "为各个邻区的千扰等级中 千扰等级低的个数, P为各个邻区的千扰等级中千扰等级高的个数, ^t mate/oJl是预先 设定的千扰等级低对应的估计值, estimateloTl是预先设定的千扰等级高对应的估计值, 7^"为预先设定的目标千扰值;
当然, 上述公式仅为举例, 实际应用中, m也可以为各个邻区的千扰等级中千扰等级 低或高的个数, n也可以为各个邻区的千扰等级中千扰等级中等或高的个数, P也可以为 各个邻区的千扰等级中千扰等级低或中等的个数, estimateIoT\也可以是预先设定的千扰 等级中等或高对应的估计值, estimateloTl也可以是预先设定的千扰等级低或中等对应的 估计值, 其中, n和 t mate/οΠ的含义一致, p和 e^mate/oJ2的含义一致, 具体设置方 式视应用环境不同而灵活调整, 在此不再——赘述。
根据所述当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率。
较佳的, 所述根据所述当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH 功率, 具体包括: 根据所述当前小区用户对邻区的千扰值更新功率补偿因子 或归一化的期望接收 功率谱密度 ΝΜPUSCH /)或 UE期望接收功率谱密度偏移量 puseH /')或传输格式的 增益 ATF (/)参数或目标 SINR参数;
根据更新后的 "( (或 -—^^^^ 或 —!^^^!^ 或 ^ 参数更新用于计算目标 SINR的相关参数;
通过无线资源控制 RRC信令将更新后的用于计算目标信号与无线加噪声之比 SINR的 相关参数发送给需要进行功率调整的用户, 并根据所述更新后的用于计算目标 SINR的相 关参数更新目标 SINR。
较佳的, 所述根据所述当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH 功率, 具体包括:
确定目标 SINR后, 根据所述当前小区用户对邻区的千扰值修正该目标 SINR;
通过闭环传输功率控制 TPC命令字将修正后的目标 SINR发送给需要进行功率调整的 用户。
较佳的, 基于 A3事件、 频谱效率和本邻区路径损耗差等因素之中的一个因素或任意 因素组合确定需要进行功率调整的用户, 其中, 确定需要进行功率调整的用户具体为: 当前小区内所有用户; 或者
当前小区内所有边缘用户; 或者
当前小区内所有中心用户; 或者
当前小区特定用户。
较佳的, 还包括:
测量邻区对当前小区的千扰水平;
当所述邻区对当前小区的千扰水平小于或等于预先设定的第一门限时, 确定千扰等级 为低, 当所述邻区对当前小区的千扰水平大于预先设定的第二门限时,确定千扰等级为高, 当所述邻区对当前小区的千扰水平大于所述第一门限且小于或等于所述第二门限时, 确定 千扰等级为中等;
将千扰等级信息发送给邻区。
较佳的, 所述测量邻区对当前小区的千扰水平, 具体包括:
分别测量各个物理资源块 PRB中邻区对当前小区的千扰值,将测量得到的各个邻区对 当前小区的千扰值分别作为各个 PRB中邻区对当前小区的千扰水平; 或者
分别测量各个 PRB中邻区对当前小区的千扰值, 将各个 PRB中邻区对当前小区的千 扰值的平均值作为各个 PRB中邻区对当前小区的千扰水平。 本发明实施例提供一种 PUSCH功率控制装置, 包括: 接收单元, 用于接收邻区发送的千扰等级信息;
调整单元, 用于统计各个邻区的千扰等级信息中各个千扰等级的个数, 并根据统计结 果调整当前小区用户的物理上行共享信道 PUSCH功率。
本发明实施例提供一种 PUSCH功率控制方法及装置, 通过邻区发送的千扰等级信息 来确定自身对邻区的千扰情况, 进而对当前小区用户的 PUSCH功率进行调整, 从而实现 根据相邻小区之间千扰进行功率控制。
较佳的, 所述千扰等级信息具体为:
表示千扰等级低、 千扰等级中等或千扰等级高的符号。
较佳的, 所述调整单元具体用于:
统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并根据统计结 果调整当前小区用户的 PUSCH功率; 或者
统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数以及千扰等级中 等的个数, 并根据统计结果调整当前小区用户的 PUSCH功率。
较佳的, 所述调整单元统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低 的个数, 并根据统计结果调整当前小区用户的 PUSCH功率, 具体包括:
根据各个邻区的千扰等级信息, 确定当前小区用户对邻区的千扰值为:
n■ {estimateloTl - IoTt t) + p■ {estimateloTl - IoTt t)
Δ 其中, "为各个邻区的千扰等级中千扰等级低的个数, P为各个邻区的千扰等级中千 扰等级高的个数, estimateloTl是预先设定的千扰等级低对应的估计值, estimateloTl是预 先设定的千扰等级高对应的估计值, 7^"为预先设定的目标千扰值;
当然, 上述公式仅为举例, 实际应用中, n也可以为各个邻区的千扰等级中千扰等级 中等或高的个数, P也可以为各个邻区的千扰等级中千扰等级低或中等的个数, estimateloTl也可以是预先设定的千扰等级中等或高对应的估计值, estimateloTl也可以是 预先设定的千扰等级低或中等对应的估计值, 其中, n和 t mate/οΠ的含义一致, p 和 e^mate/oJ2的含义一致, 具体设置方式视应用环境不同而灵活调整, 在此不再——赘述。
根据所述当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率; 所述调整单元统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并根据统计结果调整当前小区用户的 PUSCH功率, 具体包括:
根据各个邻区的千扰等级信息, 确定当前小区用户对邻区的千扰值为:
η■ {estimateloTl - IoTt t) + p■ {estimateloTl - IoTt t)
m + n + p 为各个邻区的千扰等级中千扰等级中等的个数, "为各个邻区的千扰等级中 千扰等级低的个数, P为各个邻区的千扰等级中千扰等级高的个数, ^t mate/oJl是预先 设定的千扰等级低对应的估计值, estimateloTl是预先设定的千扰等级高对应的估计值, 7; 为预先设定的目标千扰值;
当然, 上述公式仅为举例, 实际应用中, m也可以为各个邻区的千扰等级中千扰等级 低或高的个数, n也可以为各个邻区的千扰等级中千扰等级中等或高的个数, P也可以为 各个邻区的千扰等级中千扰等级低或中等的个数, estimateIoT\也可以是预先设定的千扰 等级中等或高对应的估计值, estimateloTl也可以是预先设定的千扰等级低或中等对应的 估计值, 其中, n和 t mate/οΠ的含义一致, p和 e^mate/oJ2的含义一致, 具体设置方 式视应用环境不同而灵活调整, 在此不再——赘述。
根据所述当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率。
较佳的, 所述调整单元根据所述当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率, 具体包括:
根据所述当前小区用户对邻区的千扰值更新功率补偿因子 或归一化的期望接收 功率谱密度 ΝΜPUSCH /)或 UE期望接收功率谱密度偏移量 puseH /')或传输格式的 增益 ATF (/)参数或目标 SINR参数;
根据更新后的 "( (或 -—^^^^ 或 —!^^^!^ 或 ^ 参数更新用于计算目标 信号与无线加噪声之比 SINR的相关参数;
通过无线资源控制 RRC信令将更新后的用于计算目标 SINR的相关参数发送给需要进 行功率调整的用户, 并根据所述更新后的用于计算目标 SINR的相关参数更新目标 SINR。
较佳的, 所述调整单元根据所述当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率, 具体包括:
确定目标 SINR后, 根据所述当前小区用户对邻区的千扰值修正该目标 SINR;
通过闭环传输功率控制 TPC命令字将修正后的目标 SINR发送给需要进行功率调整的 用户。
较佳的, 所述调整单元基于 A3事件、 频谱效率和本邻区路径损耗差等因素之中的一 个因素或任意因素组合确定需要进行功率调整的用户, 其中, 确定需要进行功率调整的用 户具体为:
当前小区内所有用户; 或者
当前小区内所有边缘用户; 或者
当前小区内所有中心用户; 或者
当前小区特定用户。
较佳的, 还包括:
发送单元, 用于测量邻区对当前小区的千扰水平; 当所述邻区对当前小区的千扰水平 小于或等于预先设定的第一门限时, 确定千扰等级为低, 当所述邻区对当前小区的千扰水 平大于预先设定的第二门限时, 确定千扰等级为高, 当所述邻区对当前小区的千扰水平大 于所述第一门限且小于或等于所述第二门限时, 确定千扰等级为中等; 将千扰等级信息发 送给邻区。
较佳的, 所述发送单元测量邻区对当前小区的千扰水平, 具体包括:
分别测量各个物理资源块 PRB中邻区对当前小区的千扰值,将测量得到的各个邻区对 当前小区的千 4尤值均作为邻区对当前小区的千 ·ί尤水平; 或者
分别测量各个 PRB中邻区对当前小区的千扰值, 将各个 PRB中邻区对当前小区的千 扰值的平均值作为邻区对当前小区的千扰水平。 本发明实施例提供一种 PUSCH功率控制装置, 包括:
接收端口, 用于接收邻区发送的千扰等级信息;
处理器, 用于统计各个邻区的千扰等级信息中各个千扰等级的个数, 并根据统计结果 调整当前小区用户的物理上行共享信道 PUSCH功率。
本发明实施例提供一种 PUSCH功率控制方法及装置, 通过邻区发送的千扰等级信息 来确定自身对邻区的千扰情况, 进而对当前小区用户的 PUSCH功率进行调整, 从而实现 根据相邻小区之间千扰进行功率控制。
较佳的, 所述千扰等级信息具体为:
表示千扰等级低、 千扰等级中等或千扰等级高的符号。
较佳的, 所述处理器具体用于:
统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并根据统计结 果调整当前小区用户的 PUSCH功率; 或者
统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数以及千扰等级中 等的个数, 并根据统计结果调整当前小区用户的 PUSCH功率。
较佳的, 所述处理器统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的 个数, 并根据统计结果调整当前小区用户的 PUSCH功率, 具体包括:
根据各个邻区的千扰等级信息, 确定当前小区用户对邻区的千扰值为:
n■ {estimateloTl - IoTt t) + p■ {estimateloTl - IoTt t) 其中, "为各个邻区的千扰等级中千扰等级低的个数, P为各个邻区的千扰等级中千 扰等级高的个数, estimateloTl是预先设定的千扰等级低对应的估计值, estimateloTl是预 先设定的千扰等级高对应的估计值, 7^"为预先设定的目标千扰值;
当然, 上述公式仅为举例, 实际应用中, n也可以为各个邻区的千扰等级中千扰等级 中等或高的个数, P也可以为各个邻区的千扰等级中千扰等级低或中等的个数, estimateloTl也可以是预先设定的千扰等级中等或高对应的估计值, estimateloTl也可以是 预先设定的千扰等级低或中等对应的估计值, 其中, n和 t mate/οΠ的含义一致, p 和 e^mate/oJ2的含义一致, 具体设置方式视应用环境不同而灵活调整, 在此不再——赘述。
根据所述当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率; 所述处理器统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并 根据统计结果调整当前小区用户的 PUSCH功率, 具体包括:
根据各个邻区的千扰等级信息, 确定当前小区用户对邻区的千扰值为:
n■ {estimateloTl - IoTt t) + p■ {estimateloTl - IoTt t)
Δ 其中, 为各个邻区的千扰等级中千扰等级中等的个数, "为各个邻区的千扰等级中 千扰等级低的个数, P为各个邻区的千扰等级中千扰等级高的个数, ^t mate/oJl是预先 设定的千扰等级低对应的估计值, estimateloTl是预先设定的千扰等级高对应的估计值, 7; 为预先设定的目标千扰值;
当然, 上述公式仅为举例, 实际应用中, m也可以为各个邻区的千扰等级中千扰等级 低或高的个数, n也可以为各个邻区的千扰等级中千扰等级中等或高的个数, P也可以为 各个邻区的千扰等级中千扰等级低或中等的个数, estimateIoT\也可以是预先设定的千扰 等级中等或高对应的估计值, estimateloTl也可以是预先设定的千扰等级低或中等对应的 估计值, 其中, n和 t mate/οΠ的含义一致, p和 e^mate/oJ2的含义一致, 具体设置方 式视应用环境不同而灵活调整, 在此不再——赘述。
根据所述当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率。
较佳的, 所述处理器根据所述当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率, 具体包括:
根据所述当前小区用户对邻区的千扰值更新功率补偿因子 或归一化的期望接收 功率谱密度 ΝΜPUSCH /)或 UE期望接收功率谱密度偏移量 puseH /')或传输格式的 增益 ATF (/)参数或目标 SINR参数;
根据更新后的 "( (或 -—^^^^ 或 —!^^^!^ 或 ^ 参数更新用于计算目标 信号与无线加噪声之比 SINR的相关参数;
通过无线资源控制 RRC信令将更新后的用于计算目标 SINR的相关参数发送给需要进 行功率调整的用户, 并根据所述更新后的用于计算目标 SINR的相关参数更新目标 SINR。
较佳的, 所述处理器根据所述当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率, 具体包括:
确定目标 SINR后, 根据所述当前小区用户对邻区的千扰值修正该目标 SINR; 通过闭环传输功率控制 TPC命令字将修正后的目标 SINR发送给需要进行功率调整的 用户。
较佳的, 所述处理器基于 A3事件、 频谱效率和本邻区路径损耗差等因素之中的一个 因素或任意因素组合确定需要进行功率调整的用户, 其中, 确定需要进行功率调整的用户 具体为:
当前小区内所有用户; 或者
当前小区内所有边缘用户; 或者
当前小区内所有中心用户; 或者
当前小区特定用户。
发送端口, 用于测量邻区对当前小区的千扰水平; 当所述邻区对当前小区的千扰水平 小于或等于预先设定的第一门限时, 确定千扰等级为低, 当所述邻区对当前小区的千扰水 平大于预先设定的第二门限时, 确定千扰等级为高, 当所述邻区对当前小区的千扰水平大 于所述第一门限且小于或等于所述第二门限时, 确定千扰等级为中等; 将千扰等级信息发 送给邻区。
较佳的, 所述发送端口测量邻区对当前小区的千扰水平, 具体包括:
分别测量各个物理资源块 PRB中邻区对当前小区的千扰值,将测量得到的各个邻区对 当前小区的千 4尤值均作为邻区对当前小区的千 ·ί尤水平; 或者
分别测量各个 PRB中邻区对当前小区的千扰值, 将各个 PRB中邻区对当前小区的千 扰值的平均值作为邻区对当前小区的千扰水平。 附图说明 图 1为本发明实施例提供的 PUSCH功率控制方法流程图;
图 2为本发明实施例提供的 PUSCH功率控制装置第一结构示意图。
图 3为本发明实施例提供的 PUSCH功率控制装置第二结构示意图。 具体实施方式 为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本发明实施例中的 附图, 对本发明实施例中的技术方案进行清楚、 完整地描述, 显然, 所描述的实施例是本 发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员 在没有作出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
本发明实施例提供一种 PUSCH功率控制方法及装置, 通过邻区发送的千扰等级信息 来确定自身对邻区的千扰情况, 进而对当前小区用户的 PUSCH功率进行调整, 从而实现 根据相邻小区之间千扰进行功率控制。
如图 1所示, 本发明实施例提供的 PUSCH功率控制方法, 包括:
步骤 S 101、 接收邻区发送的千扰等级信息;
步骤 S 102、 统计各个邻区的千扰等级信息中各个千扰等级的个数, 并根据统计结果调 整当前小区用户的 PUSCH功率。
本发明实施例提供的 PUSCH功率控制方法是根据邻区传递给本区的表示千扰等级的 01信息确定上调功率或下调功率, 即若邻区传递的 01信息较低, 说明本区对邻区的千扰 较小, 则本区可适当上调功率, 提升用户性能; 若邻区传递的 01信息较高, 说明本区对 邻区的千扰较大, 则本区可适当下调功率, 以降低千扰。
其中, 千扰等级信息具体为: 表示千扰等级低、 千扰等级中等或千扰等级高的符号。 例如, 可以用 0、 1、 2分别表示千扰等级低、 千扰等级中等和千扰等级高。
一个小区通常有多个邻区, 每个邻区发送的千扰等级可能不同, 在步骤 S102 中, 统 计各个邻区的千扰等级信息中各个千扰等级的个数, 并根据统计结果调整当前小区用户的
PUSCH功率, 具体包括:
统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并根据统计结 果调整当前小区用户的 PUSCH功率; 或者
统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数以及千扰等级中 等的个数, 并根据统计结果调整当前小区用户的 PUSCH功率。
具体的, 统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并根 据统计结果调整当前小区用户的 PUSCH功率, 具体包括:
根据各个邻区的千扰等级信息, 确定当前小区用户对邻区的千扰值为:
n■ {estimateloTl - IoTt et) + p - {estimateloTl - IoTt et )
其中, "为各个邻区的千扰等级中千扰等级低的个数, P为各个邻区的千扰等级中千 扰等级高的个数, estimateloTl是预先设定的千扰等级低对应的估计值, estimateloTl是预 先设定的千扰等级高对应的估计值, 7^"为预先设定的目标千扰值;
当然, 上述公式仅为举例, 实际应用中, n也可以为各个邻区的千扰等级中千扰等级 中等或高的个数, P也可以为各个邻区的千扰等级中千扰等级低或高的个数, estimateIoT\ 也可以是预先设定的千扰等级中等或高对应的估计值, estimateloTl也可以是预先设定的 千扰等级低或中等对应的估计值,其中,!^^ mate/oJl的含义一致, p和 e^mate/oJ2的 含义一致, 具体设置方式视应用环境不同而灵活调整, 在此不再——赘述。
根据当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率;
同样道理, 统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并 根据统计结果调整当前小区用户的 PUSCH功率, 具体包括:
根据各个邻区的千扰等级信息, 确定当前小区用户对邻区的千扰值为:
n■ {estimateloTl- IoTt t) + p (estimateIoT2 - IoTt t)
Ar
IoTmler m + n + p 其中, 为各个邻区的千扰等级中千扰等级中等的个数, "为各个邻区的千扰等级中 千扰等级低的个数, P为各个邻区的千扰等级中千扰等级高的个数, estimatdoTH 设定的千扰等级低对应的估计值, estimateloTl是预先设定的千扰等级高对应的估计值, 7; 为预先设定的目标千扰值;
当然, 上述公式仅为举例, 实际应用中, m也可以为各个邻区的千扰等级中千扰等级 低或高的个数, n也可以为各个邻区的千扰等级中千扰等级中等或高的个数, P也可以为 各个邻区的千扰等级中千扰等级低或中等的个数, estimateIoT\也可以是预先设定的千扰 等级中等或高对应的估计值, estimateloTl也可以是预先设定的千扰等级低或中等对应的 估计值, 其中, n和 tmate/οΠ的含义一致, p和 e^mate/oJ2的含义一致, 具体设置方 式视应用环境不同而灵活调整, 在此不再——赘述。
根据当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率。
以上两个公式中, estimateIoT\ e matefoJ2和/ o7^gei都是预先设定的值, 若 IoTt rget 设定为 10dB, 可以设定为 5dB, e matefoJ2可以设定为 15dB。
其中, 根据当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率, 具体 包括:
根据当前小区用户对邻区的千扰值更新 (功率补偿因子)或 Ρ。― ΝΜ皿— PUSCH /) (归 一化的期望接收功率谱密度)或
Figure imgf000016_0001
(UE期望接收功率谱密度偏移量)或 ATF() (传输格式的增益)参数或目标 SINR参数;
根据更新后的 "( (或 -—^^^^ 或 —!^^^!^ 或 ^ 参数更新用于计算目标 SINR的相关参数;
通过 RRC信令将更新后的用于计算目标 SINR的相关参数发送给需要进行功率调整的 用户, 并根据更新后的用于计算目标 SINR的相关参数更新目标 SINR。
具体的, 根据当前小区用户对邻区的千扰值修正《(_/·): Ρ0 = U 例 如, 具体爹正方法可以为, 当 Afo7 >0时, ( ·) = ( ·)-0.1, 否则, 《(_/·)不变;
根 据 当 前 小 区 用 户 对 邻 区 的 千 扰 值 修 正 Ρ。ΝΜΙΝΑ^Ρυ (·) : Ρ U ' 例 如 ' 具 体 修 正 方 法 可 以 为
) ) - ,
根据当前小区用户对邻区
Figure imgf000016_0002
: POJJE PUSCHU)-f( T, ' 例 如, 具体修正方法可以为 P。― υΕΡυ ( ) = Ρ。― PUSCH /)- AD ; 根据当前小区用户对邻区的千扰值修正 ATF( ) : ATF(i) ^ f(AIoTin , 例如, 具体修正方 法可以为, 当
Figure imgf000017_0001
否则, 《0)不变。
或者, 可以在目标 SINR确定后再对该目标 SINR进行调整, 此时, 根据当前小区用 户对邻区的千扰值, 调整当前小区用户的 PUSCH功率, 具体包括:
确定目标 SINR后, 根据当前小区用户对邻区的千扰值修正该目标 SINR;
通过闭环 TPC命令字将修正后的目标 SINR发送给需要进行功率调整的用户。
具体的, 可以确定修正后的目标 SINR为 M ^ M^, - ΔΜ^ , 其中, SINRt get 为修正前的目标 SINR, MoTm r为当前小区用户对邻区的千扰值。
若通过 RRC信令通知用户的方式来进行功率调整, 使用的 RRC信令较多, 占用空口 资源, 但是通过这种方式进行调整, 单次调整的幅度较大; 若通过闭环 TPC命令字通知用 户的方式来进行功率调整, 单次调整的幅度较小, 需要多次调整才能获得明显效果。
此外, 由于邻区千扰情况是通过负载交互信息获得, 精度有限, 且 X2接口最小周期 20ms, 考虑节省 X2接口信息的前提下, 小区间的功率控制要慢于小区内的功率控制。
功率调整对象可以是小区内所有用户, 也可以是小区内部分用户, 所以, 较佳的, 可 以基于 A3事件、 频谱效率和本邻区路径损耗差等因素之中的一个因素或任意因素组合确 定需要进行功率调整的用户, 其中, 确定需要进行功率调整的用户具体为:
当前小区内所有用户; 或者
当前小区内所有边缘用户; 或者
当前小区内所有中心用户; 或者
当前小区特定用户。
为便于邻区进行功率调整, 该方法还包括:
测量邻区对当前小区的千扰水平;
当邻区对当前小区的千扰水平小于或等于预先设定的第一门限时, 确定千扰等级为 低, 当邻区对当前小区的千扰水平大于预先设定的第二门限时, 确定千扰等级为高, 当邻 区对当前小区的千扰水平大于第一门限且小于或等于第二门限时 确定千扰等级为中等; 将千扰等级信息发送给邻区。
具体的, 由于功控所需的信息为邻区的系统 IoT (邻区对当前小区的千扰水平),所以, 确定千扰等级有两种方案, 如下:
方案一: 基站分别测量各个 PRB中邻区对当前小区的千扰值, 将各个 PRB中邻区对 当前小区的千扰值的平均值作为各个 PRB 中邻区对当前小区的千扰水平, 即基站将各个
PRB中邻区对当前小区的千扰值的平均值作为系统 IoT, 和预先设定的门限值比较, 确定 千扰等级, 则所有 PRB上得到的 01值均相同。 此时, 邻区的基站接收到用该方式确定的 千扰等级后 , 直接根据该 01值选择预先设定的 IoT估计值即可。 方案二:基站分别测量各个 PRB中邻区对当前小区的千扰值,将测量得到的各个邻区 对当前小区的千扰值分别作为各个 PRB 中邻区对当前小区的千扰水平; 即基站测量每个 PRB上的 IoT, 和预先设定的门限值比较, 分别确定千扰等级。 此时, 邻区的基站接收到 用该方式确定的千扰等级, 需要根据接收的每个 PRB 上的千扰等级计算千扰等级的平均 值, 然后根据该千扰等级的平均值选择预先设定的 IoT估计值。
例如, 预先设定的门限值为 thresholedl和 thresholed2。 JL thresholedK thresholed20 门限值可以由管理和维护服务器(Operation and Maintenance, 0&M ) 配置。
若测量得到的 IoT≤thresholedl , 则该 IoT值对应的千扰等级为低;
若 thresholed 1 <测量得到的测量的 IoT≤thresholed2 ,则该 IoT值对应的千扰等级为中等; 若测量得到的 IoT>thresholed2 , 则该 IoT值对应的千扰等级为高。
在确定千扰等级后, 即可通过 X2接口 LOAD INFORMATION消息向邻区传递该千扰 等级。
在进行千扰等级的发送时, 可釆用周期触发或周期加事件触发的形式。
周期触发, 即周期统计邻区千扰, 并传递千扰信息给邻区。
周期加事件触发, 即周期统计邻区千扰,若千扰大于一定门限值或千扰小于一定门限, 那么, 传递千扰信息 01给邻区。
本发明实施例还相应提供一种 PUSCH功率控制装置, 如图 2所示, 该装置包括: 接收单元 201 , 用于接收邻区发送的千扰等级信息;
调整单元 202, 用于统计各个邻区的千扰等级信息中各个千扰等级的个数, 并根据统 计结果调整当前小区用户的 PUSCH功率。
该装置可以具体为基站或中继节点 (Relay ), 其中的基站包括宏基站( Macro )、 微基 站( Micro )、 微微基站(Pico )、 家庭基站或称为毫微微基站(Femto )等, 以及其它可能 的釆用 TDD模式的无线接入点 ( AP )。
其中, 千扰等级信息具体为:
表示千扰等级低、 千扰等级中等或千扰等级高的符号。
调整单元 202具体用于:
统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并根据统计结 果调整当前小区用户的 PUSCH功率; 或者
统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数以及千扰等级中 等的个数, 并根据统计结果调整当前小区用户的 PUSCH功率。
调整单元 202统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并根据统计结果调整当前小区用户的 PUSCH功率, 具体包括:
根据各个邻区的千扰等级信息, 确定当前小区用户对邻区的千扰值为: n . (estimateloTl - IoTt et) + p - estimateloTl
n + p 其中, "为各个邻区的千扰等级中千扰等级低的个数, p为各个邻区的千扰等级中千 扰等级高的个数, stimateloTl是预先设定的千扰等级低对应的估计值, estimateloTl是预 先设定的千扰等级高对应的估计值, 7^"为预先设定的目标千扰值;
当然, 上述公式仅为举例, 实际应用中, n也可以为各个邻区的千扰等级中千扰等级 中等或高的个数, P也可以为各个邻区的千扰等级中千扰等级低或中等的个数, estimateloTl也可以是预先设定的千扰等级中等或高对应的估计值, estimateloTl也可以是 预先设定的千扰等级低或中等对应的估计值, 其中, n和 的含义一致, p 和 e^mate/oJ2的含义一致, 具体设置方式视应用环境不同而灵活调整, 在此不再——赘述。
根据当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率;
调整单元 202统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并根据统计结果调整当前小区用户的 PUSCH功率, 具体包括:
根据各个邻区的千扰等级信息, 确定当前小区用户对邻区的千扰值为:
n . {estimateloTl - IoTtw et) + p . {estimateloTl - IoTtAIget)
m + n + p 其中, 为各个邻区的千扰等级中千扰等级中等的个数, "为各个邻区的千扰等级中 千扰等级低的个数, P为各个邻区的千扰等级中千扰等级高的个数, ^t mate/oJl是预先 设定的千扰等级低对应的估计值, estimateloTl是预先设定的千扰等级高对应的估计值, 7^"为预先设定的目标千扰值;
当然, 上述公式仅为举例, 实际应用中, m也可以为各个邻区的千扰等级中千扰等级 低或高的个数, n也可以为各个邻区的千扰等级中千扰等级中等或高的个数, P也可以为 各个邻区的千扰等级中千扰等级低或中等的个数, estimateIoT\也可以是预先设定的千扰 等级中等或高对应的估计值, estimateloTl也可以是预先设定的千扰等级低或中等对应的 估计值, 其中, n和 t mate/oJl的含义一致, p和 e^mate/oJ2的含义一致, 具体设置方 式视应用环境不同而灵活调整, 在此不再——赘述。
根据当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率。
调整单元 202根据当前小区用户对邻区的千扰值,调整当前小区用户的 PUSCH功率, 具体包括:
根据当前小区用户对邻区的千扰值更新 ( ·)或 Ρ。 ΝΜPUSCH /)或 P。— PUSCH ( 或 △TF( )参数;
根据更新后的 "( (或 -—^^^^ 或 —!^^^!^ 或 ^ 参数更新用于计算目标 SINR的相关参数; 通过 RRC信令将更新后的用于计算目标 SINR的相关参数发送给需要进行功率调整的 用户, 并根据更新后的用于计算目标 SINR的相关参数更新目标 SINR。
调整单元 202根据当前小区用户对邻区的千扰值,调整当前小区用户的 PUSCH功率, 具体包括:
确定目标 SINR后, 根据当前小区用户对邻区的千扰值修正该目标 SINR;
通过闭环 TPC命令字将修正后的目标 SINR发送给需要进行功率调整的用户。
其中, 调整单元 202基于 A3事件、 频谱效率和本邻区路径损耗差等因素之中的一个 因素或任意因素组合确定需要进行功率调整的用户, 其中, 确定需要进行功率调整的用户 具体为:
当前小区内所有用户; 或者
当前小区内所有边缘用户; 或者
当前小区内所有中心用户; 或者
当前小区特定用户。
进一步, 该装置还包括:
发送单元, 用于测量邻区对当前小区的千扰水平; 当邻区对当前小区的千扰水平小于 或等于预先设定的第一门限时, 确定千扰等级为低, 当邻区对当前小区的千扰水平大于预 先设定的第二门限时, 确定千扰等级为高, 当邻区对当前小区的千扰水平大于第一门限且 小于或等于第二门限时, 确定千扰等级为中等; 将千扰等级信息发送给邻区。
其中, 发送单元测量邻区对当前小区的千扰水平, 具体包括:
分别测量各个物理资源块 PRB中邻区对当前小区的千扰值,将测量得到的各个邻区对 当前小区的千 4尤值均作为邻区对当前小区的千 ·ί尤水平; 或者
分别测量各个 PRB中邻区对当前小区的千扰值, 将各个 PRB中邻区对当前小区的千 扰值的平均值作为邻区对当前小区的千扰水平。
本发明实施例还提供一种 PUSCH功率控制装置, 参阅图 3所示, 具体包括: 接收端口 301 , 用于接收邻区发送的千扰等级信息;
处理器 302, 用于统计各个邻区的千扰等级信息中各个千扰等级的个数, 并根据统计 结果调整当前小区用户的物理上行共享信道 PUSCH功率。
较佳的, 千扰等级信息具体为:
表示千扰等级低、 千扰等级中等或千扰等级高的符号。
较佳的, 处理器 302具体用于:
统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并根据统计结 果调整当前小区用户的 PUSCH功率; 或者
统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数以及千扰等级中 等的个数, 并根据统计结果调整当前小区用户的 PUSCH功率。
较佳的, 处理器 302统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的 个数, 并根据统计结果调整当前小区用户的 PUSCH功率, 具体包括:
根据各个邻区的千扰等级信息, 确定当前小区用户对邻区的千扰值为:
n■ {estimateloTl - IoTt t) + p (estimateIoT2 - IoTt t)
Δ 其中, "为各个邻区的千扰等级中千扰等级低的个数, P为各个邻区的千扰等级中千 扰等级高的个数, estimateloTl是预先设定的千扰等级低对应的估计值, estimateloTl是预 先设定的千扰等级高对应的估计值, 7^"为预先设定的目标千扰值;
当然, 上述公式仅为举例, 实际应用中, n也可以为各个邻区的千扰等级中千扰等级 中等或高的个数, P也可以为各个邻区的千扰等级中千扰等级低或高等的个数, estimateloTl也可以是预先设定的千扰等级中等或高对应的估计值, estimateloTl也可以是 预先设定的千扰等级低或中等对应的估计值, 其中, n和 t mate/οΠ的含义一致, p 和 e^mate/oJ2的含义一致, 具体设置方式视应用环境不同而灵活调整, 在此不再——赘述。
根据当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率;
处理器 302统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并 根据统计结果调整当前小区用户的 PUSCH功率, 具体包括:
根据各个邻区的千扰等级信息, 确定当前小区用户对邻区的千扰值为:
n . (estimateloTl -IoTtaTget) + p . {estimateloTl - IoTtaTget)
m + n + p 其中, 为各个邻区的千扰等级中千扰等级中等的个数, "为各个邻区的千扰等级中 千扰等级低的个数, P为各个邻区的千扰等级中千扰等级高的个数, ^t mate/oJl是预先 设定的千扰等级低对应的估计值, estimateloTl是预先设定的千扰等级高对应的估计值, 7; 为预先设定的目标千扰值;
当然, 上述公式仅为举例, 实际应用中, m也可以为各个邻区的千扰等级中千扰等级 低或高的个数, n也可以为各个邻区的千扰等级中千扰等级中等或高的个数, P也可以为 各个邻区的千扰等级中千扰等级低或高的个数, estimateIoT\也可以是预先设定的千扰等 级中等或高对应的估计值, estimateloTl也可以是预先设定的千扰等级低或中等对应的估 计值, 其中, n和 t mate/οΠ的含义一致, p和 e^mate/oJ2的含义一致, 具体设置方式 视应用环境不同而灵活调整, 在此不再——赘述。
根据当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率。
较佳的,处理器 302根据当前小区用户对邻区的千扰值,调整当前小区用户的 PUSCH 功率, 具体包括: 根据当前小区用户对邻区的千扰值更新功率补偿因子《c 或归一化的期望接收功率 谱密度 P PUSCH /)或 UE期望接收功率谱密度偏移量 puseH /')或传输格式的增益 ΔΤΡ (/)参数或目标 SINR参数;
根据更新后的 "( (或 -—^^^^ 或 —!^^^^ 或 ^ 参数更新用于计算目标 信号与无线加噪声之比 SINR的相关参数;
通过无线资源控制 RRC信令将更新后的用于计算目标 SINR的相关参数发送给需要进 行功率调整的用户, 并根据更新后的用于计算目标 SINR的相关参数更新目标 SINR
较佳的,处理器 302根据当前小区用户对邻区的千扰值,调整当前小区用户的 PUSCH 功率, 具体包括:
确定目标 SINR后, 根据当前小区用户对邻区的千扰值修正该目标 SINR;
通过闭环传输功率控制 TPC命令字将修正后的目标 SINR发送给需要进行功率调整的 用户。
较佳的, 处理器 302基于 A3事件、 频谱效率和本邻区路径损耗差等因素之中的一个 因素或任意因素组合确定需要进行功率调整的用户, 其中, 确定需要进行功率调整的用户 具体为:
当前小区内所有用户; 或者
当前小区内所有边缘用户; 或者
当前小区内所有中心用户; 或者
当前小区特定用户。
较佳的, 还包括:
发送端口, 用于测量邻区对当前小区的千扰水平; 当邻区对当前小区的千扰水平小于 或等于预先设定的第一门限时, 确定千扰等级为低, 当邻区对当前小区的千扰水平大于预 先设定的第二门限时, 确定千扰等级为高, 当邻区对当前小区的千扰水平大于第一门限且 小于或等于第二门限时, 确定千扰等级为中等; 将千扰等级信息发送给邻区。
较佳的, 发送端口测量邻区对当前小区的千扰水平, 具体包括:
分别测量各个物理资源块 PRB中邻区对当前小区的千扰值,将测量得到的各个邻区对 当前小区的千 4尤值均作为邻区对当前小区的千 ·ί尤水平; 或者
分别测量各个 PRB中邻区对当前小区的千扰值, 将各个 PRB中邻区对当前小区的千 扰值的平均值作为邻区对当前小区的千扰水平。
本发明实施例提供一种 PUSCH功率控制方法及装置, 通过邻区发送的千扰等级信息 来确定自身对邻区的千扰情况, 进而对当前小区用户的 PUSCH功率进行调整, 从而实现 根据相邻小区之间千扰进行功率控制。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 系统、 或计算机程序产 品。 因此, 本发明可釆用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面的实 施例的形式。 而且, 本发明可釆用在一个或多个其中包含有计算机可用程序代码的计算机 可用存储介盾 (包括但不限于磁盘存储器、 CD-ROM、 光学存储器等)上实施的计算机程 序产品的形式。
本发明是参照根据本发明实施例的方法、 设备(系统)、 和计算机程序产品的流程图 和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图和 /或方框图中的每一流 程和 /或方框、 以及流程图和 /或方框图中的流程和 /或方框的结合。 可提供这些计算机 程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器 以产生一个机器, 使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用 于实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方 式工作的计算机可读存储器中, 使得存储在该计算机可读存储器中的指令产生包括指令装 置的制造品, 该指令装置实现在流程图一个流程或多个流程和 /或方框图一个方框或多个 方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机 或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理, 从而在计算机或其他 可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和 /或方框图一个 方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例, 但本领域内的技术人员一旦得知了基本创造性概 念, 则可对这些实施例作出另外的变更和修改。 所以, 所附权利要求意欲解释为包括优选 实施例以及落入本发明范围的所有变更和修改。
显然, 本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实 施例的精神和范围。 这样, 倘若本发明实施例的这些修改和变型属于本发明权利要求及其 等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种 PUSCH功率控制方法, 其特征在于, 包括:
接收邻区发送的千扰等级信息;
统计各个邻区的千扰等级信息中各个千扰等级的个数, 并根据统计结果调整当前小区 用户的物理上行共享信道 PUSCH功率。
2、 如权利要求 1所述的方法, 其特征在于, 所述千扰等级信息具体为:
表示千扰等级低、 千扰等级中等或千扰等级高的符号。
3、 如权利要求 2 所述的方法, 其特征在于, 所述统计各个邻区的千扰等级信息中各 个千扰等级的个数,并根据统计结果调整当前小区用户的物理上行共享信道 PUSCH功率, 具体包括:
统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并根据统计结 果调整当前小区用户的 PUSCH功率; 或者
统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数以及千扰等级中 等的个数, 并根据统计结果调整当前小区用户的 PUSCH功率。
4、 如权利要求 3 所述的方法, 其特征在于, 所述统计各个邻区的千扰等级中, 千扰 等级高的个数、 千扰等级低的个数, 并根据统计结果调整当前小区用户的 PUSCH功率, 具体包括:
根据各个邻区的千扰等级信息, 确定当前小区用户对邻区的千扰值为:
n■ (estimateloTl - IoTt et) + p - estimateloTl - IoTt et ) 其中, "为各个邻区的千扰等级中千扰等级低或中等或高的个数, P为各个邻区的千 扰等级中千扰等级高或低或中等的个数, estimateIoT\是预先设定的千扰等级低或中等或 高对应的估计值, estimateloTl是预先设定的千扰等级高或低或中等对应的估计值, n和 p 的含义不一致 , n和 estimateloTl的含义一致 , p和 estimateloTl的含义一致 , IoTtaTget为预 先设定的目标千扰值;
根据所述当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率; 所述统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并根据统 计结果调整当前小区用户的 PUSCH功率, 具体包括:
根据各个邻区的千扰等级信息, 确定当前小区用户对邻区的千扰值为:
n . (estimateloTl - IoTt!iTget) + p . (estimateloTl - IoTt!iTget)
Δ
IoTmler m + n + p 其中, ∞为各个邻区的千扰等级中千扰等级中等或低或高的个数, "为各个邻区的千 扰等级中千扰等级低或高或中等的个数, p为各个邻区的千扰等级中千扰等级高或中等或 低的个数, estimateIoT\是预先设定的千扰等级低或高或中等对应的估计值, estimateloTl 是预先设定的千扰等级高或中等或低对应的估计值, m、 n 和 p 的含义不一致, n 和 estimateloTl的含义一致, p和 estimateloTl的含义一致, /o7;a ^为预先设定的目标千扰值; 根据所述当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率。
5、 如权利要求 4 所述的方法, 其特征在于, 所述根据所述当前小区用户对邻区的千 扰值, 调整当前小区用户的 PUSCH功率, 具体包括:
根据所述当前小区用户对邻区的千扰值更新功率补偿因子 或归一化的期望接收 功率谱密度 ΝΜPUSCH /)或 UE期望接收功率谱密度偏移量 puseH /')或传输格式的 增益 ATF (/)参数或目标 SINR参数;
根据更新后的 "( (或 -—^^^^ 或 —!^^^!^ 或 ^ 参数更新用于计算目标 SINR的相关参数;
通过无线资源控制 RRC信令将更新后的用于计算目标信号与无线加噪声之比 SINR的 相关参数发送给需要进行功率调整的用户, 并根据所述更新后的用于计算目标 SINR的相 关参数更新目标 SINR。
6、 如权利要求 4 所述的方法, 其特征在于, 所述根据所述当前小区用户对邻区的千 扰值, 调整当前小区用户的 PUSCH功率, 具体包括:
确定目标 SINR后, 根据所述当前小区用户对邻区的千扰值修正该目标 SINR;
通过闭环传输功率控制 TPC命令字将修正后的目标 SINR发送给需要进行功率调整的 用户。
7、 如权利要求 5或 6所述的方法, 其特征在于, 基于 A3事件、 频谱效率和本邻区路 径损耗差之中的一个因素或任意因素组合确定需要进行功率调整的用户, 其中, 确定需要 进行功率调整的用户具体为:
当前小区内所有用户; 或者
当前小区内所有边缘用户; 或者
当前小区内所有中心用户; 或者
当前小区特定用户。
8、 如权利要求 1所述的方法, 其特征在于, 还包括:
测量邻区对当前小区的千扰水平;
当所述邻区对当前小区的千扰水平小于或等于预先设定的第一门限时, 确定千扰等级 为低, 当所述邻区对当前小区的千扰水平大于预先设定的第二门限时,确定千扰等级为高, 当所述邻区对当前小区的千扰水平大于所述第一门限且小于或等于所述第二门限时, 确定 千扰等级为中等; 将千扰等级信息发送给邻区。
9、 如权利要求 8 所述的方法, 其特征在于, 所述测量邻区对当前小区的千扰水平, 具体包括:
分别测量各个物理资源块 PRB中邻区对当前小区的千扰值,将测量得到的各个邻区对 当前小区的千扰值分别作为各个 PRB中邻区对当前小区的千扰水平; 或者
分别测量各个 PRB中邻区对当前小区的千扰值, 将各个 PRB中邻区对当前小区的千 扰值的平均值作为各个 PRB中邻区对当前小区的千扰水平。
10、 一种 PUSCH功率控制装置, 其特征在于, 包括:
接收单元, 用于接收邻区发送的千扰等级信息;
调整单元, 用于统计各个邻区的千扰等级信息中各个千扰等级的个数, 并根据统计结 果调整当前小区用户的物理上行共享信道 PUSCH功率。
11、 如权利要求 10所述的装置, 其特征在于, 所述千扰等级信息具体为:
表示千扰等级低、 千扰等级中等或千扰等级高的符号。
12、 如权利要求 11所述的装置, 其特征在于, 所述调整单元具体用于:
统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并根据统计结 果调整当前小区用户的 PUSCH功率; 或者
统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数以及千扰等级中 等的个数, 并根据统计结果调整当前小区用户的 PUSCH功率。
13、 如权利要求 12 所述的装置, 其特征在于, 所述调整单元统计各个邻区的千扰等 级中,千扰等级高的个数、千扰等级低的个数,并根据统计结果调整当前小区用户的 PUSCH 功率, 具体包括:
根据各个邻区的千扰等级信息, 确定当前小区用户对邻区的千扰值为:
n■ estimateloTl - IoTt t) + p■ estimateloTl - IoTt t) 其中, "为各个邻区的千扰等级中千扰等级低或中等或高的个数, P为各个邻区的千 扰等级中千扰等级高或低或中等的个数, estimateIoT\是预先设定的千扰等级低或中等或 高对应的估计值, estimateloTl是预先设定的千扰等级高或低或中等对应的估计值, n和 p 的含义不一致 , n和 estimateloTl的含义一致 , p和 estimateloTl的含义一致 , IoTtaTget为预 先设定的目标千扰值;
根据所述当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率; 所述调整单元统计各个邻区的千扰等级中, 千扰等级高的个数、 千扰等级低的个数, 并根据统计结果调整当前小区用户的 PUSCH功率, 具体包括:
根据各个邻区的千扰等级信息, 确定当前小区用户对邻区的千扰值为: n■ {estimateloTl - IoTt t) + p (estimateIoT2 - IoTt t)
Ar 其中, ∞为各个邻区的千扰等级中千扰等级中等或低或高的个数, "为各个邻区的千 扰等级中千扰等级低或高或中等的个数, p为各个邻区的千扰等级中千扰等级高或中等或 低的个数, estimateIoT\是预先设定的千扰等级低或高或中等对应的估计值, estimateloTl 是预先设定的千扰等级高或中等或低对应的估计值, m、 n 和 p 的含义不一致, n 和 estimateloTl的含义一致, p和 estimateloTl的含义一致, /o7;a ^为预先设定的目标千扰值; 根据所述当前小区用户对邻区的千扰值, 调整当前小区用户的 PUSCH功率。
14、 如权利要求 13 所述的装置, 其特征在于, 所述调整单元根据所述当前小区用户 对邻区的千扰值, 调整当前小区用户的 PUSCH功率, 具体包括:
根据所述当前小区用户对邻区的千扰值更新功率补偿因子 或归一化的期望接收 功率谱密度 ΝΜPUSCH /)或 UE期望接收功率谱密度偏移量 puseH /')或传输格式的 增益 ATF (/)参数或目标 SINR参数;
根据更新后的 "( (或 -—^^^^ 或 —!^^^!^ 或 ^ 参数更新用于计算目标 信号与无线加噪声之比 SINR的相关参数;
通过无线资源控制 RRC信令将更新后的用于计算目标 SINR的相关参数发送给需要进 行功率调整的用户, 并根据所述更新后的用于计算目标 SINR的相关参数更新目标 SINR。
15、 如权利要求 13 所述的装置, 其特征在于, 所述调整单元根据所述当前小区用户 对邻区的千扰值, 调整当前小区用户的 PUSCH功率, 具体包括:
确定目标 SINR后, 根据所述当前小区用户对邻区的千扰值修正该目标 SINR;
通过闭环传输功率控制 TPC命令字将修正后的目标 SINR发送给需要进行功率调整的 用户。
16、 如权利要求 14或 15所述的装置, 其特征在于, 所述调整单元基于 A3事件、 频 谱效率和本邻区路径损耗差之中的一个因素或任意因素组合确定需要进行功率调整的用 户, 其中, 确定需要进行功率调整的用户具体为:
当前小区内所有用户; 或者
当前小区内所有边缘用户; 或者
当前小区内所有中心用户; 或者
当前小区特定用户。
17、 如权利要求 10所述的装置, 其特征在于, 还包括:
发送单元, 用于测量邻区对当前小区的千扰水平; 当所述邻区对当前小区的千扰水平 小于或等于预先设定的第一门限时, 确定千扰等级为低, 当所述邻区对当前小区的千扰水 平大于预先设定的第二门限时, 确定千扰等级为高, 当所述邻区对当前小区的千扰水平大 于所述第一门限且小于或等于所述第二门限时, 确定千扰等级为中等; 将千扰等级信息发 送给邻区。
18、 如权利要求 17 所述的装置, 其特征在于, 所述发送单元测量邻区对当前小区的 千扰水平, 具体包括:
分别测量各个物理资源块 PRB中邻区对当前小区的千扰值,将测量得到的各个邻区对 当前小区的千 4尤值均作为邻区对当前小区的千 ·ί尤水平; 或者
分别测量各个 PRB中邻区对当前小区的千扰值, 将各个 PRB中邻区对当前小区的千 扰值的平均值作为邻区对当前小区的千扰水平。
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