WO2009157169A1 - パワーヘッドルームの報告方法、及び移動局装置 - Google Patents
パワーヘッドルームの報告方法、及び移動局装置 Download PDFInfo
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- WO2009157169A1 WO2009157169A1 PCT/JP2009/002825 JP2009002825W WO2009157169A1 WO 2009157169 A1 WO2009157169 A1 WO 2009157169A1 JP 2009002825 W JP2009002825 W JP 2009002825W WO 2009157169 A1 WO2009157169 A1 WO 2009157169A1
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- 238000006243 chemical reaction Methods 0.000 description 17
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- 238000004364 calculation method Methods 0.000 description 9
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/365—Power headroom reporting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0028—Variable division
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2614—Peak power aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
- H04W52/281—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission taking into account user or data type priority
Definitions
- the present invention relates to a method for reporting the power headroom of a mobile station that switches and transmits a plurality of mobile station transmission modes having different maximum transmittable power values, and bases an uplink signal by switching the plurality of mobile station transmission modes.
- the present invention relates to a mobile station apparatus that transmits to a station.
- LTE-Advanced an expanded version of 3GPP LTE (3rd Generation Partnership Project Long Long Term Evolution), switches between SC-FDMA (Single Carrier-Frequency Division Multiple Access) and OFDMA (Orthogonal Frequency Division Multiple Access) on the uplink. Transmission has been studied (for example, see Non-Patent Document 1).
- the advantage of OFDMA is that frequency scheduling gain can be obtained because frequency resource allocation can be performed more flexibly than SC-FDMA. Accordingly, OFDMA can improve throughput performance.
- SC-FDMA is that, compared with OFDMA, PAPR (Peak-to-Average Power Ratio) and CM (Cubic Metric) indicating the ratio between the peak and average power of the transmission signal are small. Therefore, when power amplifiers having the same maximum transmission power standard are used for SC-FDMA and OFDMA, the power amplifier back-off required for transmitting a transmission signal without distortion should be smaller in SC-FDMA. Can do. Therefore, SC-FDMA can increase the maximum power that can be actually transmitted, so that the coverage performance can be improved.
- Hybrid transmission can obtain respective advantages by adaptively switching between SC-FDMA and OFDMA according to the communication environment of the mobile station.
- PHR power headroom
- OFDMA is applied to a mobile station having a sufficient PHR because transmission power is low
- SC-FDMA is applied to a mobile station having a large PHR because transmission power is large.
- Non-Patent Document 2 describes the definition of PHR and the transmission condition of PHR according to Equation (1).
- PHR is power headroom [dB]
- P MAX maximum transmission power [mW]
- M is the number of allocated frequency resource blocks
- P 0 is an offset (parameter signaled from the base station) [dB]
- PL is path loss.
- ⁇ is a weighting factor for path loss
- ⁇ MCS is an MCS-dependent offset
- f ( ⁇ i ) is a transmission power control value that is closed-loop controlled.
- Non-Patent Document 2 discloses that when the PHR is Y [dB] or less, or when the path loss changes by X [dB], the mobile station notifies the base station of the PHR. It also describes that PHR is notified at intervals of N frames (Y, X, and N are parameters). *
- the maximum transmittable powers of SC-FDMA and OFDMA are not only different from each other, but are also different for each mobile station. Therefore, in order to switch the transmission mode of the mobile station between SC-FDMA and OFDMA with high accuracy, the base station needs to know both SC-FDMA PHR and OFDMA PHR.
- the base station knowing the SC-FDMA and OFDMA PHR is realized by the mobile station reporting both the SC-FDMA and OFDMA PHR to the base station.
- the base station can obtain only one of SC-FDMA and OFDMA PHR by one report. Therefore, in this case, the base station cannot perform switching between SC-FDMA and OFDMA based on PHR at an appropriate timing.
- An object of the present invention is to provide a control signal transmission method and a mobile station apparatus capable of accurately switching a plurality of mobile station communication modes having different maximum transmission power values while suppressing an increase in signaling overhead. It is.
- the power headroom reporting method of the present invention is a power headroom reporting method of a mobile station that switches and transmits a plurality of mobile station transmission modes having different maximum power values that can be transmitted. Transmitting the power headroom information of any of the mobile station transmission modes to the base station, and transmitting the difference information regarding the maximum value between the mobile station transmission modes to the base station before the reporting period begins. And the step of performing.
- the mobile station apparatus is a mobile station apparatus that switches a plurality of mobile station transmission modes having different maximum transmittable power values and transmits an uplink signal to a base station, and in the reporting period, the plurality of mobile stations Report means for reporting any power headroom information in the transmission mode to the base station, and notification for notifying the base station of difference information regarding the maximum value between mobile station transmission modes before the reporting period starts Means.
- the present invention it is possible to provide a power headroom reporting method and a mobile station apparatus capable of accurately switching a plurality of mobile station communication modes having different maximum transmission power values while suppressing an increase in signaling overhead. be able to.
- Block diagram showing a configuration of a mobile station apparatus according to Embodiment 1 of the present invention Diagram for explaining difference information Diagram for explaining the report format of power room information
- the block diagram which shows the structure of the base station apparatus which concerns on Embodiment 1 of this invention.
- Diagram for explaining communication procedure between mobile station and base station The figure which shows a maximum transmission power information table and a difference information table Table used for reporting maximum transmission power information and difference information according to Embodiment 2
- the present inventor found that the difference in power headroom between a plurality of mobile station transmission modes is caused only by the maximum value of power that can be transmitted in each transmission mode, and is different for each mobile station device. It has been found that the value is constant regardless of the value. And if the base station is notified of the difference information in advance, the base station reports only the power headroom information of one mobile station transmission mode from the mobile station device, so that the base station can The present inventors have found that information can be calculated and have arrived at the present invention.
- FIG. 1 is a block diagram showing a configuration of mobile station apparatus (hereinafter simply referred to as “mobile station”) 100 according to Embodiment 1 of the present invention.
- the mobile station 100 is configured to be adaptable to 3GPP LTE-Advanced.
- a mobile station 100 includes a maximum transmission power information setting unit 101, a data generation unit 102, a switch unit 103, a DFT unit 104, an S / P (serial / parallel) conversion unit 105, and a mapping unit 106.
- IDFT section 107 IDFT section 107
- CP adding section 108 transmission RF section 109
- reception RF section 110 demodulation section 111
- transmission mode / scheduling information detection section 112 path loss measurement section 113
- PHR calculation section 114 includes a PHR transmission determination unit 115.
- the maximum transmission power information setting unit 101 sets the maximum transmission power used by the mobile station 100 in the currently belonging cell or system. This maximum transmission power is the maximum value of power that the mobile station 100 can transmit in the cell or system. The maximum transmission power is set according to the transmission frequency of the mobile station 100 or the number of antennas.
- the maximum transmission power information setting unit 101 outputs the set maximum transmission power information (power class information) to the data generation unit 102 and the PHR calculation unit 114.
- the maximum transmission power information setting unit 101 includes the maximum transmission power information and between transmission modes. Difference information regarding the maximum transmission power is output to the data generation unit 102.
- the difference information regarding the maximum transmission power between the transmission modes is equivalent to the difference information regarding the power headroom (PHR) between the transmission modes.
- the maximum transmission power information setting unit 101 outputs the difference information to the data generation unit 102 so that the difference information is transmitted before the reporting period of power headroom information described later starts. In this way, the difference information is notified to the base station described later.
- the plurality of mobile station transmission modes having different maximum transmission powers are the SC-FDMA mode and the OFDMA mode.
- the difference information at this time is a difference between the maximum power in the OFDMA mode and the maximum power in the SC-FDMA mode (see FIG. 2).
- the data generation unit 102 generates data to be transmitted by the mobile station 100 and outputs the generated transmission data to the switch unit 103.
- the data generation unit 102 receives the PHR information from the PHR transmission determination unit 115 (that is, when reporting the PHR information to the base station), as shown in FIG. Include in This report format is the same for 3GPP LTE and 3GPP LTE-Advanced. Thus, the PHR information is reported to the base station 200 described later.
- the data generation unit 102 when receiving the maximum transmission power information and the difference information from the maximum transmission power information setting unit 101, the data generation unit 102 generates transmission data based on both information.
- the switch unit 103 switches the transmission mode in accordance with an instruction from the base station 200 described later. Based on the transmission mode information detection result from the transmission mode / scheduling information detection unit 112, the switch unit 103 outputs the data output from the data generation unit 102 to the DFT unit 104 or outputs it to the S / P conversion unit 105. Switch between. Specifically, when the transmission mode / scheduling information detection unit 112 detects SC-FDMA mode information as transmission mode instruction information, the switch unit 103 outputs data to the DFT unit 104, and the OFDMA mode information is If detected, data is output to the S / P converter 105.
- the DFT unit 104 performs DFT (Discrete Fourier Transform) processing on the data output from the switch unit 103 and outputs the processed data to the mapping unit 106.
- DFT Discrete Fourier Transform
- the S / P conversion unit 105 converts the data output from the switch unit 103 from a serial sequence to a parallel sequence and outputs the converted data to the mapping unit 106.
- the mapping unit 106 maps the data output from the DFT unit 104 or the data output from the S / P conversion unit 105 to a frequency band scheduled by the base station 200 described later, and outputs the mapped data to the IDFT unit 107. That is, in the data output from DFT section 104, each data symbol is mapped to the entire transmission frequency band. On the other hand, in the data output from the S / P converter 105, each data symbol is mapped to one subcarrier.
- the IDFT unit 107 performs IDFT (Inverse Discrete Fourier Transform) processing on the frequency domain signal output from the mapping unit 106, converts the signal into a time domain signal, and outputs the signal to the CP adding unit 108.
- IDFT Inverse Discrete Fourier Transform
- the CP adding unit 108 copies a part of the rear end of the signal output from the IDFT unit 107 as a CP (Cyclic Prefix), and adds the CP to the head of the frame.
- the signal to which the CP is added is output to the transmission RF unit 109.
- the transmission RF unit 109 performs transmission processing such as D / A conversion, amplification, and up-conversion on the signal output from the CP adding unit 108 and transmits the signal to the base station 200 described later from the antenna.
- the reception RF unit 110 receives a signal transmitted from the base station 200 described later via an antenna, performs reception processing such as down-conversion and A / D conversion on the received signal, and outputs the received signal to the demodulation unit 111.
- the demodulation unit 111 performs equalization processing and demodulation processing on the signal output from the reception RF unit 110, and outputs the demodulation result to the transmission mode / scheduling information detection unit 112.
- the transmission mode / scheduling information detector 112 detects scheduling information instructed from the base station 200 described later from the demodulation result.
- the scheduling information includes MCS (Modulation Coding Schemes), transmission bandwidth, and transmission power control information.
- the detected scheduling information is output to the PHR calculation unit 114.
- the transmission mode / scheduling information detection unit 112 detects transmission mode instruction information from the base station 200 described later from the demodulation result.
- the transmission mode instruction information includes a switching destination transmission mode (that is, here, SC-FDMA mode information or OFDMA mode information which is transmission mode information of the switching destination).
- the detected transmission mode instruction information is output to the switch unit 103 and the PHR calculation unit 114.
- the path loss measurement unit 113 measures the reception level of the downlink common pilot signal whose transmission power is known, which is included in the signal output from the reception RF unit 110, and measures the path loss level in the downlink propagation path. The measured path loss level is output to the PHR calculation unit 114.
- the PHR calculation unit 114 obtains the transmission power level of the data channel based on the path loss level output from the path loss measurement unit 113 and the scheduling information output from the transmission mode / scheduling information detection unit 112, and uses Equation (1). To calculate PHR. Here, the PHR calculation unit 114 calculates the PHR of the currently selected transmission mode. The calculated PHR is output to the PHR transmission determination unit 115.
- the PHR transmission determination unit 115 outputs the PHR received from the PHR calculation unit 114 to the data generation unit 102 periodically or when a predetermined condition is satisfied in the report period.
- the PHR transmission determination unit 115 determines whether or not a predetermined condition for transmitting the PHR is satisfied by comparing the PHR output from the PHR calculation unit 114 with a PHR report threshold, that is, by performing threshold determination. Further, the PHR transmission determination unit 115 determines whether or not the timer value counted from the previous PHR periodic transmission has reached a predetermined value. Thus, the PHR information is reported to the base station 200 described later periodically or when a predetermined condition is satisfied in the reporting period.
- FIG. 4 is a block diagram showing a configuration of base station apparatus (hereinafter simply referred to as “base station”) 200 according to Embodiment 1 of the present invention.
- the base station 200 is configured to be adaptable to 3GPP LTE-Advanced.
- the base station 200 includes a reception RF unit 201, a CP removal unit 202, a DFT unit 203, a demapping unit 204, an IDFT unit 205, a P / S conversion unit 206, a switch unit 207, The data decoding unit 208, the PHR detection unit 209, the PHR correction unit 210, the transmission mode determination unit 211, the scheduling information determination unit 212, the modulation unit 213, and the transmission RF unit 214 are included.
- the reception RF unit 201 receives a signal transmitted from the mobile station 100 via an antenna, performs reception processing such as down-conversion and A / D conversion on the received signal, and outputs the received signal to the CP removal unit 202.
- CP removing section 202 removes the CP component of the signal output from reception RF section 201, and outputs the signal from which the CP component has been removed to DFT section 203.
- the DFT unit 203 performs DFT processing on the signal output from the CP removal unit 202 and outputs a signal converted from the time domain to the frequency domain to the demapping unit 204.
- the demapping unit 204 extracts received data from the frequency band scheduled by the base station 200 from the frequency domain signals output from the DFT unit 203, and the extracted received data is transmitted to the IDFT unit 205 and the P / S conversion unit 206. Output to.
- the IDFT unit 205 performs IDFT processing on the reception data output from the demapping unit 204, converts it to a time domain signal, and outputs the signal to the switch unit 207.
- the P / S conversion unit 206 converts the reception data output from the demapping unit 204 from a parallel sequence to a serial sequence and outputs the converted data to the switch unit 207.
- the switch unit 207 is switched based on the transmission mode of the mobile station 100 determined by the transmission mode determination unit 211. This switching is performed by a control unit (not shown) performing control based on the transmission mode determined by the transmission mode determination unit 211. With this switching, when the current transmission mode is SC-FDMA, the data output from the IDFT unit 205 is output to the data decoding unit 208, and when the current transmission mode is OFDMA, the data is output from the P / S conversion unit 206. The data is output to the data decoding unit 208.
- the data decoding unit 208 decodes the data output from the switch unit 207, and outputs the decoded data to the PHR detection unit 209.
- the PHR detection unit 209 detects PHR information and difference information included in the data output from the data decoding unit 208, and outputs the detected PHR information and difference information to the PHR correction unit 210.
- the PHR correction unit 210 corrects the PHR information reported from the mobile station 100 using difference information, thereby calculating a PHR related to a transmission mode other than the transmission mode corresponding to the PHR information.
- the PHR correction unit 210 calculates the PHR in OFDMA mode by subtracting the difference information from the reported PHR.
- the PHR correction unit 210 calculates the PHR in the SC-FDMA mode by adding the difference information to the reported PHR.
- the transmission mode determination unit 211 Based on the PHR of the SC-FDMA mode and the OFDMA mode calculated by the PHR correction unit 210, the transmission mode determination unit 211 transmits the transmission mode (in this case, the SC-FDMA mode or OFDMA) of the data channel to be transmitted next time by the mobile station 100. Mode) is determined, and transmission mode instruction information for designating the transmission mode of the switching destination is output to the modulation unit 213.
- the transmission mode in this case, the SC-FDMA mode or OFDMA
- Scheduling information determination section 212 determines scheduling information such as MCS, allocation resource, transmission power, etc. of transmission signal from SC-FDMA mode and OFDMA mode PHR calculated by PHR correction section 210 and reception quality information obtained separately. To do.
- the scheduling information is output to the modulation unit 213.
- Modulation section 213 modulates transmission data, transmission mode instruction information, and scheduling information, and outputs a modulated signal to transmission RF section 214.
- the transmission RF unit 214 performs transmission processing such as D / A conversion, amplification and up-conversion on the modulated signal output from the modulation unit 213, and transmits the result from the antenna to the mobile station 100.
- FIG. 5 is a diagram for explaining a communication procedure between the mobile station 100 and the base station 200. It is assumed that base station 200 can use a plurality of mobile station transmission modes having different maximum transmission powers.
- step S1001 When the mobile station 100 is powered on (step S1001), the mobile station 100 performs a cell search (step S1002).
- the mobile station 100 and the base station 200 perform RACH processing in step S1003, and perform authentication processing in step S1004.
- the mobile station 100 transmits a capability (mobile station capability) report of the mobile station 100 to the base station 200 in step S1005.
- the mobile station 100 reports the capabilities of the mobile station 100 such as transmission power information, the number of antennas, and the maximum data rate.
- the maximum transmission power information setting section 101 of the mobile station 100 sends the maximum transmission power information and difference information (difference information of the maximum power in the OFDMA mode to the maximum power in the SC-FDMA mode) to the base station 200. Report. This report is performed for each mobile station 100. Then, the base station 200 holds the maximum transmission power information and difference information of each mobile station 100.
- the maximum transmission power information and the difference information are defined in a table as shown in FIG. 6, for example. That is, the maximum transmission power information is classified into a plurality of power classes based on the maximum power. Further, the difference information is classified into a plurality of backoff classes based on backoff (difference). A similar table is also held in the base station 200.
- the mobile station 100 notifies the base station 200 of the maximum transmission power information and the difference information based on the power class information and the backoff class information. This notification is made before the start of the PHR reporting period.
- this notification is performed before the mobile station 100 and the base station 200 enter the communication start state (for example, the Active mode (sometimes referred to as the Connected mode)) in Step S1006.
- the mobile station 100 starts reporting PHR to the base station 200 in step S1007.
- This PHR report is performed periodically or when a predetermined condition is satisfied in the report period.
- the PHR correction unit 210 calculates the PHR in both modes for each mobile station 100 using the already acquired difference information.
- difference information is reported in a communication procedure between the mobile station 100 and the base station 200 performed when the mobile station 100 is powered on.
- the difference information may be reported. Further, the difference information may be transferred from the handover source base station 200 to the handover destination base station 200.
- the maximum transmission power information setting unit 101 notifies the base station 200 of the difference information between the transmission modes before the reporting period of the power headroom information starts.
- the power headroom information transmitted during the reporting period is any one of the plurality of mobile station transmission modes, so that the uplink can be obtained even when the mobile station transmission mode is one. Increase in signaling overhead can be prevented.
- the base station 200 transmits each mobile station without receiving the power headroom information related to all the mobile station transmission modes.
- the power headroom related to the mode can be calculated. Therefore, the base station 200 can accurately switch the mobile station transmission mode at an appropriate timing, and further instructs the mobile station 100 of transmission power or transmission bandwidth according to each mobile station transmission mode. Can do. Thereby, since the mobile station 100 can always transmit with appropriate transmission parameters, the uplink throughput is improved.
- the present invention is not limited to this, and the PHR in SC-FDMA mode may be reported regardless of the transmission mode.
- the PHR format for example, PHR range
- the PHR-to-information bit string conversion process performed by the mobile station 100 can be simplified.
- the trigger condition for PHR reporting for example, when PHR is Y [dB] or less
- the mobile station 100 measures the PHR in the OFDM mode, corrects the measured PHR with the difference information, and obtains the PHR in the SC-FDMA mode. To report to.
- the present invention is not limited to this.
- the multicarrier transmission mode even in the non-OFDM mode, for example, a mode in which a plurality of SC-FDMA signals are transmitted at different frequencies, or one SC-FDMA.
- a mode for example, clustered SC-FDMA or clustered DFT-S-OFDM
- the number of mobile stations 100 is one.
- the difference information between the maximum transmission power of 2 and the maximum transmission power of 4 is reported to the base station 200.
- the MIMO transmission mode may be used as one of a plurality of mobile station transmission modes having different maximum transmission powers. Since a plurality of data streams multiplied by different weights are multiplexed and transmitted by each antenna, PAPR or CM increases as in multicarrier transmission. Therefore, the MIMO transmission mode can be handled in the same manner as the OFDM mode.
- the increase in PAPR or CM differs for each weight matrix, that is, for each precoding matrix (PrecodingPreMatrix). Therefore, the mobile station 100 may report the difference information of the maximum transmission power in the MIMO transmission mode with respect to the maximum transmission power in the SC-FDMA (1-antenna transmission) mode for each precoding matrix to the base station 200.
- the second embodiment relates to variations of Capability (mobile station capability) reports. Note that the configurations of the mobile station and the base station in the second embodiment are not different from those in the first embodiment.
- FIG. 7 is a table used for reporting maximum transmission power information and difference information according to the second embodiment.
- the performance of mobile stations is classified into classes according to combinations of maximum power and backoff. That is, when a report using this table is performed, mobile station (UE) performance information reported from the mobile station to the base station is defined by a combination of maximum power and backoff. Specifically, the maximum transmission power information setting unit 101 of the mobile station 100 uses a class number that matches the performance of the own station for reporting.
- the larger power class is combined with the larger back-off class. This is because a larger back-off is generally required as the maximum power is larger.
- each functional block used in the description of the above embodiment is typically realized as an LSI which is an integrated circuit. These may be individually made into one chip, or may be made into one chip so as to include a part or all of them.
- the name used here is LSI, but it may also be called IC, system LSI, super LSI, or ultra LSI depending on the degree of integration.
- the method of circuit integration is not limited to LSI, and implementation with a dedicated circuit or a general-purpose processor is also possible.
- An FPGA Field Programmable Gate Array
- a reconfigurable processor that can reconfigure the connection and setting of circuit cells inside the LSI may be used.
- the power headroom reporting method and mobile station apparatus of the present invention are useful as those capable of accurately switching a plurality of mobile station communication modes having different maximum values of transmittable power while suppressing an increase in signaling overhead. is there.
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Abstract
Description
図1は、本発明の実施の形態1に係る移動局装置(以下、単に「移動局」という)100の構成を示すブロック図である。移動局100は、3GPP LTE-Advancedに適応可能に構成されている。
実施の形態2は、Capability(移動局能力)報告のバリエーションに関する。なお、実施の形態2の移動局及び基地局の構成は、実施の形態1の場合と変わるところがない。
Claims (6)
- 送信可能な電力の最大値が異なる複数の移動局送信モードを切り替えて送信する移動局のパワーヘッドルームの報告方法であって、
報告期間において、前記複数の移動局送信モードのうちいずれかのパワーヘッドルーム情報を前記基地局に送信するステップと、
前記報告期間が始まる前に、移動局送信モード間の前記最大値に関する差分情報を前記基地局に送信するステップと、
を具備するパワーヘッドルームの報告方法。 - 送信可能な電力の最大値が異なる複数の移動局送信モードを切り換えて上り信号を基地局に送信する移動局装置であって、
報告期間において、前記複数の移動局送信モードのうちいずれかのパワーヘッドルーム情報を前記基地局に報告する報告手段と、
前記報告期間が始まる前に、移動局送信モード間の前記最大値に関する差分情報を前記基地局に通知する通知手段と、
を具備する移動局装置。 - 前記通知手段は、パワークラスとバックオフクラスとの組み合わせで定義されるUE性能情報によって前記差分情報を前記基地局に通知する、
請求項2に記載の移動局装置。 - 前記UE性能情報を定義する前記組み合わせでは、大きなパワークラスほど大きなバックオフクラスと組み合わせられる、
請求項3に記載の移動局装置。 - 前記報告手段は、報告時の移動局送信モードにおけるパワーヘッドルーム情報を報告し、
前記通知手段は、前記基地局との通信開始前に前記差分情報を通知する、
請求項2に記載の移動局装置。 - 前記複数の移動局送信モードには、SC-FDMA(Single Carrier-Frequency Division Multiple Access)モード及びOFDMA(Orthogonal Frequency Division Multiple Access)モードが含まれる、
請求項2に記載の移動局装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010517746A JP5205456B2 (ja) | 2008-06-23 | 2009-06-22 | パワーヘッドルームの報告方法、及び移動局装置 |
EP09769879A EP2293618A4 (en) | 2008-06-23 | 2009-06-22 | POWER RESERVE LOGGING AND MOBILE STATION EQUIPMENT |
CN2009801209596A CN102057717A (zh) | 2008-06-23 | 2009-06-22 | 功率上升空间的报告方法及移动台装置 |
US12/997,845 US8605614B2 (en) | 2008-06-23 | 2009-06-22 | Power head room reporting method and mobile station device |
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WO2009157169A1 true WO2009157169A1 (ja) | 2009-12-30 |
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PCT/JP2009/002825 WO2009157169A1 (ja) | 2008-06-23 | 2009-06-22 | パワーヘッドルームの報告方法、及び移動局装置 |
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US (1) | US8605614B2 (ja) |
EP (1) | EP2293618A4 (ja) |
JP (1) | JP5205456B2 (ja) |
CN (1) | CN102057717A (ja) |
WO (1) | WO2009157169A1 (ja) |
Cited By (5)
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JPWO2009153998A1 (ja) * | 2008-06-20 | 2011-11-24 | パナソニック株式会社 | 無線送信装置及び無線送信方法 |
US20130142125A1 (en) * | 2010-09-03 | 2013-06-06 | Sharp Kabushiki Kaisha | Terminal device, base station device, communication system, and communication method |
JP2013541283A (ja) * | 2010-09-30 | 2013-11-07 | エルジー エレクトロニクス インコーポレイティド | 無線通信システムにおけるパワーヘッドルーム報告方法及び装置 |
JP2018078631A (ja) * | 2013-05-10 | 2018-05-17 | クアルコム,インコーポレイテッド | 支援情報に基づいて達成可能リンクスループットを推定するための方法および装置 |
WO2019163113A1 (ja) * | 2018-02-23 | 2019-08-29 | 株式会社Nttドコモ | ユーザ端末及び無線通信方法 |
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US8422434B2 (en) * | 2003-02-18 | 2013-04-16 | Qualcomm Incorporated | Peak-to-average power ratio management for multi-carrier modulation in wireless communication systems |
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US8315661B2 (en) * | 2009-12-31 | 2012-11-20 | Cellco Partnership | Enhanced power headroom reporting |
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KR101740366B1 (ko) * | 2010-06-28 | 2017-05-29 | 삼성전자주식회사 | 이동 통신 시스템에서 역방향 최대 전송 전력을 보고하는 방법 및 장치 |
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US20130215866A1 (en) * | 2010-11-05 | 2013-08-22 | Jae Hyun Ahn | Apparatus and method for transmitting power information about component carrier in multiple component carrier system |
WO2012108713A2 (ko) * | 2011-02-11 | 2012-08-16 | 엘지전자 주식회사 | 단말의 외부 기기와의 연결에 따른 단말성능 변경 정보 송수신 방법 |
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JP6068479B2 (ja) | 2011-09-30 | 2017-01-25 | インターデイジタル パテント ホールディングス インコーポレイテッド | ワイヤレス通信における多地点伝送 |
US10588036B2 (en) | 2013-04-03 | 2020-03-10 | Interdigital Patent Holdings, Inc. | Method and apparatus for controlling uplink transmission power based on accumulated transmit power control commands and corresponding uplink subframe sets |
CN105580466B (zh) * | 2014-08-30 | 2019-12-06 | 华为技术有限公司 | 一种天线信息的发送、接收方法和设备 |
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CN110971317B (zh) * | 2018-09-29 | 2021-09-21 | 华为技术有限公司 | 功率指示方法及装置 |
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- 2009-06-22 JP JP2010517746A patent/JP5205456B2/ja not_active Expired - Fee Related
- 2009-06-22 US US12/997,845 patent/US8605614B2/en not_active Expired - Fee Related
- 2009-06-22 CN CN2009801209596A patent/CN102057717A/zh active Pending
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Cited By (7)
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JPWO2009153998A1 (ja) * | 2008-06-20 | 2011-11-24 | パナソニック株式会社 | 無線送信装置及び無線送信方法 |
JP5289437B2 (ja) * | 2008-06-20 | 2013-09-11 | パナソニック株式会社 | 無線送信装置及び無線送信方法 |
US20130142125A1 (en) * | 2010-09-03 | 2013-06-06 | Sharp Kabushiki Kaisha | Terminal device, base station device, communication system, and communication method |
US9185743B2 (en) * | 2010-09-03 | 2015-11-10 | Sharp Kabushiki Kaisha | Terminal device, base station device, communication system, and communication method |
JP2013541283A (ja) * | 2010-09-30 | 2013-11-07 | エルジー エレクトロニクス インコーポレイティド | 無線通信システムにおけるパワーヘッドルーム報告方法及び装置 |
JP2018078631A (ja) * | 2013-05-10 | 2018-05-17 | クアルコム,インコーポレイテッド | 支援情報に基づいて達成可能リンクスループットを推定するための方法および装置 |
WO2019163113A1 (ja) * | 2018-02-23 | 2019-08-29 | 株式会社Nttドコモ | ユーザ端末及び無線通信方法 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2009157169A1 (ja) | 2011-12-08 |
US20110164519A1 (en) | 2011-07-07 |
US8605614B2 (en) | 2013-12-10 |
EP2293618A1 (en) | 2011-03-09 |
EP2293618A4 (en) | 2012-10-10 |
JP5205456B2 (ja) | 2013-06-05 |
CN102057717A (zh) | 2011-05-11 |
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