WO2016056556A1 - ユーザ装置、移動通信システム、及び最大送信電力決定方法 - Google Patents
ユーザ装置、移動通信システム、及び最大送信電力決定方法 Download PDFInfo
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- WO2016056556A1 WO2016056556A1 PCT/JP2015/078360 JP2015078360W WO2016056556A1 WO 2016056556 A1 WO2016056556 A1 WO 2016056556A1 JP 2015078360 W JP2015078360 W JP 2015078360W WO 2016056556 A1 WO2016056556 A1 WO 2016056556A1
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- transmission power
- user apparatus
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- cell
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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
- H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
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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
- H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
- H04W52/346—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading distributing total power among users or channels
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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
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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
- H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
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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
- H04W52/38—TPC being performed in particular situations
- H04W52/40—TPC being performed in particular situations during macro-diversity or soft handoff
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
Definitions
- the present invention relates to a technique for determining the maximum transmission power in a user apparatus of a mobile communication system.
- the transmission power of the user apparatus UE is regulated so as to be reduced according to the transmission position and number of RBs (resource blocks).
- an allowable maximum reduction amount of transmission power is defined as “A-MPR (Additional-Maximum Power Reduction)” (see Non-Patent Document 1).
- the A-MPR receives a specific signal “NS (Network Signaling) value” (hereinafter referred to as NS value) from the NW (base station eNB). ) Is allowed to be applied.
- NW Network Signaling
- NS value is a value that is notified by additionalSpectrumEmission of SIB2 (System Information Block Type 2) (Non-patent Document 2).
- FIG. 1 shows an example of NS values and corresponding transmission conditions (requirements, band, bandwidth, number of RBs, allowable A-MPR value) (excerpt from Table 6.2.4-1 of Non-Patent Document 1). More specifically, the “transmission condition” is “additional spectrum emission mask and additional information transmission requirements” (additional spectrum emission and additional spurious emission requirement).
- Non-Patent Document 2 3.3.1 A-MPR of 1 dB or less is allowed for transmission power as specified in Minimum requirement (network signaled value “NS_05”).
- NS value is specified for each band (operating band) and channel bandwidth (channel bandwidth) as necessary. Note that the NS value is reported from the NW, but the A-MPR value is implemented in the user apparatus UE, and the NW side only determines and broadcasts the applicability.
- the operation of the user apparatus UE when the NS value not defined for all the channel bandwidths of the band used by the user apparatus UE or the specific channel bandwidth of the band is received is not defined.
- the user apparatus UE can understand NS_01 (no A-MPR) by default in an arbitrary band and an arbitrary channel bandwidth.
- the present invention has been made in view of the above points.
- a user apparatus that can understand the new transmission condition not only a user apparatus that can understand the new transmission condition but also a user apparatus that cannot understand this is appropriate. It is an object of the present invention to provide a technique that enables transmission using a maximum transmission power.
- the user apparatus in a mobile communication system comprising a base station and a user apparatus, From the base station, receive first system information including a first maximum transmission power value and a second maximum transmission power value, and second system information including a first signaling value and a second signaling value.
- the user apparatus in a mobile communication system comprising a base station and a user apparatus, Receiving means for receiving system information including a plurality of signaling values and a plurality of maximum transmission power values corresponding to each of the plurality of signaling values from the base station; Control means for selecting one of a plurality of signaling values included in the system information and performing cell selection or cell reselection using a maximum transmission power corresponding to the signaling value.
- a mobile communication system comprising a base station and a user equipment,
- the base station Transmission means for transmitting first system information including a first maximum transmission power value and a second maximum transmission power value, and second system information including a first signaling value and a second signaling value Prepared
- the user equipment is Receiving means for receiving the first system information and the second system information from the base station; Corresponding to the second signaling value when it is determined that the second signaling value included in the second system information is a value defined as a transmission condition in a cell where the user apparatus is located And a control means for determining the second maximum transmission power value to be used as a maximum transmission power value to be used in the cell.
- it is a maximum transmission power determination method executed by the user apparatus in a mobile communication system including a base station and a user apparatus, From the base station, receive first system information including a first maximum transmission power value and a second maximum transmission power value, and second system information including a first signaling value and a second signaling value. Steps, Corresponding to the second signaling value when it is determined that the second signaling value included in the second system information is a value defined as a transmission condition in a cell where the user apparatus is located Determining a second maximum transmission power value to be used as a maximum transmission power value to be used in the cell.
- a maximum transmission power determination method executed in a mobile communication system including a base station and a user apparatus
- the base station transmits first system information including a first maximum transmission power value and a second maximum transmission power value, and second system information including a first signaling value and a second signaling value.
- Steps The user equipment receiving the first system information and the second system information from the base station;
- the user apparatus determines that the second signaling value included in the second system information is a value defined as a transmission condition in a cell in which the user apparatus is located, Determining the second maximum transmission power value corresponding to the signaling value of the cell as a maximum transmission power value to be used in the cell.
- FIG. 1 It is a figure which shows the example of A-MPR. It is a block diagram of the communication system which concerns on embodiment of this invention. It is a figure which shows the example of a process sequence in this Embodiment. It is a figure which shows the flowchart of the process in this Embodiment. It is a figure which shows the example of a specification change of a SIB1 message. It is a figure which shows the example of a specification change of a SIB1 message. It is a figure which shows the example of a specification change of SIB2 message. It is a figure which shows the example of a specification change of SIB2 message. It is a figure which shows the example of a specification change of UE-EUTRA-Capability information element.
- LTE Long Term Evolution
- FIG. 2 shows a configuration diagram of a communication system according to the embodiment of the present invention.
- the communication system according to the present embodiment includes a base station eNB and a user apparatus UE. Although one base station eNB and one user apparatus UE are shown in FIG. 2, this is an example, and there may be a plurality of each.
- Example sequence In the present embodiment, since the maximum transmission power is determined based on information included in SIB1 and SIB2 received by user apparatus UE from base station eNB, first, a sequence including SIB1 and SIB2 reception with reference to FIG. An example will be described.
- FIG. 3 shows an example of the operation at the time of cell selection / reselection in the RRC idle state as an example.
- the user apparatus UE receives a synchronization signal (PSS / SSS) from the base station eNB by a cell search (step 101), thereby obtaining synchronization and acquiring a cell ID (PCI).
- PSS / SSS synchronization signal
- PCI cell ID
- the user apparatus UE receives the reference signal (CRS) transmitted from the base station eNB and measures RSRP (step 102).
- CRS reference signal
- step 103 the cell of the base station eNB is selected as the cell (best cell) having the highest RSRP of the reference signal.
- the user apparatus UE receives system information such as SIB1 and SIB2 broadcast from the base station eNB.
- the user apparatus UE determines the maximum transmission power applied by the user apparatus UE based on the NS value information included in the SIB2 and the maximum transmission power information (may be referred to as maximum output power) included in the SIB1. decide.
- the user apparatus UE determines the DL channel bandwidth (channel bandwidth) that the user apparatus UE applies in the cell based on the DL bandwidth information included in the MIB. Further, the band (operating band) applied by the cell itself is determined based on the band information included in the SIB1.
- the UL channel bandwidth is assumed to be the same as DL unless UL bandwidth information is included in SIB2.
- the value broadcast in SIB2 is determined as the UL channel bandwidth (channel bandwidth) applied in the cell.
- the base station eNB in the present embodiment broadcasts the NS value in its own cell by using additive Spectrum Emission in SIB2, and broadcasts the maximum transmission power by p-Max, which is an IE in SIB1. More specifically, the maximum transmission power notified by p-Max (also p-Max2 described later) is used as P EMAX as shown in 6.2.5 of Non-Patent Document 1. Is done.
- NS_01 is notified as additionalSpectrumEmission, and 18 dBm is notified as p-Max for the NS_01.
- NS_50 is reported as additionalSpectrumEmission, and 23 dBm is reported as p-Max for the NS_50.
- the latter UE since the latter UE can perform transmission according to the strict transmission conditions (eg, A-MPR is allowed) specified for NS_50, it may notify a large value as p-Max. is there. Accordingly, a large transmission power can be used under conditions (for example, a small number of RBs) where transmission can be performed with a large transmission power.
- a UE in cell A that receives a small p-Max actually has a transmission power of p-Max even if it is a transmission method that does not actually affect the surroundings (eg, RB position, number of RBs). Small and constrained.
- NS_01 all user apparatuses UE can understand NS_01, but NS_50 is a newly defined NS value corresponding to the new regulation, and some new UEs (hereinafter referred to as new UEs). It is assumed that only the other UE (which is called the old UE) cannot be understood.
- cell B originally wants to transmit to the UE according to the transmission conditions of NS_50, but unavoidably reports NS_01 that all UEs can understand, and In any case (number of RBs, RE position, etc.), a small p-Max is broadcast so that the transmission condition of NS_50 is satisfied (that is, the influence on the adjacent system assumed by NS_50 is not more than a predetermined value). It is possible.
- a new UE that can understand NS_50 uses a small transmission power even in a situation where a larger transmission power can be used, which may reduce the performance of the entire system.
- NS values are broadcast as NS values in the cell, and p-Max is broadcast for each NS value.
- an NS value that can be understood by all UEs is broadcasted using additiveSpectrumEmission, and the maximum transmission power corresponding thereto is broadcasted using p-Max, and only the new UE can be understood.
- the second NS value is reported by “additional Spectrum Emission 2”, and the maximum transmission power corresponding thereto is reported by “p-Max 2”.
- the user apparatus UE that receives the broadcast information in the cell B determines that the value of additiveSpectrumEmission2 (here, NS_50) is a valid value (a value that is defined corresponding to the band and channel bandwidth in the current cell). If possible, it operates under the condition corresponding to NS_50 and uses p-Max2 (23 dBm) as the maximum transmission power. In addition, when the user apparatus UE that receives the broadcast information in the cell B cannot determine that the value of additiveSpectrumEmission2 (here, NS_50) is a valid value, the user apparatus UE operates according to additiveSpectrumEmission (NS_01) and sets p-Max as the maximum transmission power. (18 dBm) is used. When p-Max is not notified, the user apparatus UE uses the value of the maximum transmission power that the user apparatus UE has as the UE capability (UE capability) instead of p-Max.
- NS_50 additiveSpectrumEmission2
- UE capability UE capability
- the SIB1 and SIB2 are received from the base station eNB of the cell in which the user apparatus UE is present (step 201).
- system information such as SIB1 and SIB2
- the user apparatus UE may appropriately read the SIB1 and SIB2 and check the information.
- the user apparatus UE corresponds to the above-mentioned “new UE”, and the user apparatus UE can read the additionalSpectrumEmission2 from the SIB2.
- the user apparatus UE When the user apparatus UE can read the additionalSpectrumEmission2 and determines that the NS value specified by the additionalSpectrumEmission2 is a valid value (Yes in Step 202), the user apparatus UE reads p-Max2 from the SIB1, The value of p-Max2 is used as the maximum transmission power (Pemax) in the cell.
- determining that the NS value is a valid value means that the user apparatus UE satisfies the transmission condition defined in the 3GPP standard corresponding to the band and channel bandwidth used in the current cell. This means that the user apparatus UE can perform the transmission operation under the transmission condition of the NS value.
- step 202 when the user apparatus UE does not support additiveSpectrumEmission2 (that is, when additionalSpectrumEmission2 cannot be understood), the process proceeds to step 204.
- additiveSpectrumEmission2 when the field cannot be recognized, or when the value of the field can be read, but the value cannot be recognized as a value corresponding to the band and channel bandwidth used in the current cell. .
- step 204 it is confirmed whether or not p-Max is broadcasted by SIB1, and if broadcasted (Yes in step 204), the p-Max is used as the maximum transmission power in the cell (step 205). ). If p-Max is not broadcast (No in step 204), the maximum transmission power corresponding to the UE capability of the user apparatus UE is used (step 206).
- FIG. 5A shows an excerpt of the SIB1 message (SystemInformationBlockType1 message).
- p-Max2 is added.
- the value of p-Max2 is a value determined as the maximum transmission power in step 203 in FIG.
- the value of p-Max described in the previous stage of FIG. 5A is a value that is set as the maximum transmission power in step 205 of FIG.
- p-Max2 is a value applied to the user apparatus UE that supports additiveSpectrumEmission2 in the cell (the cell in which the SIB1 is broadcast).
- the user apparatus UE applies p-Max if p-Max is broadcast, and applies the maximum transmission power corresponding to UE capability if p-Max is not broadcast. .
- FIG. 6A shows an excerpt of SIB2 IE (System Information Block Type 2 information element).
- SIB2 IE System Information Block Type 2 information element
- additionalSpectrumEmission2 is added.
- step 202 in FIG. 4 when the UE can understand the additionalSpectrumEmission2 (when it is determined to be a valid value), the UE uses p-Max2 as the maximum transmission power.
- the user apparatus UE that has received additionalSpectrumEmission2 having the value specified in table 6.2.4-1 of TS36.101 as valid in the band and bandwidth of the current cell, receives additionalSpectrummissionEmission. Instead, the value of additiveSpectrumEmission2 is applied. If the user apparatus UE receives additionalSpectrumEmission2 having a value not specified in table 6.2.4-1 of TS36.101 as valid in the current cell band and bandwidth, the user apparatus UE Ignore the field and operate according to additiveSpectrumEmission.
- FIG. 7A shows an excerpt of UE capability IE (UE-EUTRA-Capability information element) corresponding to the operation. As shown in FIG. 7A, modifiedMPR-Behavior is added.
- UE capability IE UE-EUTRA-Capability information element
- bit N is set to 1. If this field is not present, it indicates that the user equipment UE does not support the modified MPR / A-MPR operation.
- the user apparatus UE can be connected to the NW in a form that suppresses the maximum transmission power even under the NS that is notified of the NS value that the user apparatus UE cannot understand.
- a proposal has been made not to connect the user apparatus UE to the NW. It is preferable from the viewpoint of service provision to connect as in the above method.
- parameters (p-Max, p) corresponding thereto are defined. -Max2 etc.) are appropriately determined, so that UEs corresponding to the new NS value and UEs not corresponding to the cell can be located in the cell and transmit at an appropriate maximum transmission power.
- the notification of two NS values and two p-MAX corresponding to the two NS values from the base station eNB to the user apparatus UE includes a plurality of NS values. And a plurality of p-MAX notifications.
- the base station eNB may notify the user apparatus UE of three or more NS values and the number of p-MAX.
- the base station eNB notifies the user apparatus UE of a list in which a plurality of NS values are arranged in order of increasing priority (decreating order of priority) to the user apparatus UE in SIB2 (which may be SIB1 as described later), and the list. It is also possible to notify the user apparatus UE of a list of p-Max values corresponding to each NS value in SIB1. The user apparatus UE that has received these lists applies the NS value with the highest priority among the NS values to which the user apparatus UE is applied, and the p ⁇ corresponding to the NS value. Max is applied.
- the base station eNB when the base station eNB transmits NS_50, NS_03, NS_01 (in order of priority) for a certain band applied by the user apparatus UE, the base station eNB uses NS_50, NS_03, NS_01 by SIB1. P-Max1, p-Max2, and p-Max3 are transmitted as p-Max corresponding to each of. Then, when the user apparatus UE applies NS_50, the user apparatus UE applies p-Max1 corresponding to NS_50. In addition, regarding p-Max corresponding to the NS value (NS_01) having the lowest priority, existing p-Max may be used without newly defining signaling.
- the user apparatus UE receives SIB1, SIB2, etc. in a cell that has been in a camp by a cell selection / cell reselection procedure, and based on the information contained therein, the maximum transmission in the cell Described about determining power and the like.
- cell reselection includes the same frequency cell reselection (intra-frequency cell re-selection) and the different frequency cell reselection (inter-frequency cell re-selection). is there.
- the frequency of the cell (referred to as the carrier frequency) Measurement of reception power / reception quality in a neighboring cell (neighboring cell) having the same frequency as that of the neighboring cell may be started, and it is determined whether to transit to the neighboring cell based on the measurement result.
- the user apparatus UE measures a neighboring cell having a frequency different from the frequency of the cell in which the user equipment UE is located based on the priority, etc., and transitions to the neighboring cell based on the measurement result. Decide whether or not.
- SIB5 System information Block Type 5
- Non-patent Document 2 Non-patent Document 2
- InterFreqCarrierFreqInfo exists for each frequency of the peripheral cell.
- “InterFreqCarrierFreqInfo” includes frequency (value of dl-CarrierFreq field), maximum transmission power (value of field of p-Max), priority (value of field of cellReselectionPriority), various threshold values (threshX-High, threshX-Low, etc. Field value) and the like.
- the above p-Max value is one of the parameters used in the determination condition for determining the transition destination cell (target cell).
- a plurality of NS values for each frequency of the neighboring cells, P-Max value corresponding to each of the NS values is included.
- the plurality of NS values for each frequency are notified from the base station eNB to the user apparatus UE as, for example, a list arranged in descending order of priority (decreating order of priority).
- a plurality of p-Max values corresponding to the plurality of NS values are notified as a list in which p-Max is arranged in the same order as the arrangement order of NS values in the NS value list.
- a list in which the pair is arranged in order of priority is included in the SIB5, and the base station eNB notifies the user apparatus UE of the list. Good.
- the SIB5 when the different frequencies to be notified by the SIB5 are the frequency 1 and the frequency 2, the SIB5 includes “(NS value 1, P-Max1), (NS value 2, P-Max2) , (NS value 3, P-Max3) ”and“ (NS value 1, P-Max1), (NS value 4, P-Max4), (NS value 5, P-Max5) for frequency 2 ”. Is included.
- (NS value 1, P-Max1) indicates that NS value 1 corresponds to P-Max1.
- the user apparatus UE determines whether or not to transition to a cell of “frequency 1” in the different frequency cell reselection, for example, it corresponds to “frequency 1” in the SIB5.
- the NS value with the highest priority among the NS values applicable to the user apparatus UE in the “frequency 1”.
- p-Max corresponding to the NS value is selected, and the selected p-Max is applied to perform the determination.
- the user apparatus UE performs NS
- the user apparatus UE selects the NS value 2 and uses the P-Max2 corresponding to this to select the frequency. Determine whether to transition to one cell.
- the user apparatus UE can apply the p-Max in “InterFreqCarrierFreqInfo”.
- FIG. 8 and 9 show examples (extracts) of 3GPP specifications (3GPP TS 36.331) corresponding to the modified example related to SIB5.
- 3GPP TS 36.331 3GPP specifications
- FIG. 8 and FIG. 9 the changed part from the nonpatent literature 2 is underlined.
- FIG. 8 shows an excerpt of SIB5 (SystemInformationBlockType5 information element).
- multiMPR-InfoList is added as a list of MPR-Info.
- the multiMPR-InfoList is included for each frequency of the peripheral cell.
- multiMPR-InfoList is a list in which pairs of additive Spectrum Emission (NS values) and corresponding p-Max values are arranged in order of priority.
- NS values additive Spectrum Emission
- p-Max is not in MPR-Info
- the user apparatus UE applies p-Max in InterFreqCarrierFreqInfo.
- the user apparatus UE applies p-Max in InterFreqCarrierFreqInfo.
- FIG. 10 shows an excerpt of SIB5 (SystemInformationBlockType5 information element).
- SIB5 SystemInformationBlockType5 information element
- addition-ns-values which is a list of P-maxNS-valueList
- the first P-max NS-valueList includes a list of pairs of P-max and NS-value corresponding to the freqBandIndicator in SIB1.
- the subsequent P-max NS-valueList corresponds to each additionalSpectrumEmission included in the multiBandInfoList in SIB2.
- Each P-max NS-valueList is a list in which pairs of additive Spectrum Emission (NS values) and corresponding p-Max values are arranged in order of priority.
- the user apparatus UE applies the first additional Spectrum Emission (NS value) that the user apparatus UE supports in the list.
- the SIB5 used for different frequency cell reselection has been described, but for the same frequency cell reselection (intra-frequency cell re-selection), in order to determine whether to transition to the target cell
- the p-Max value used is included in SIB3.
- a plurality of NS values for the transition destination cell (neighbor cells) in SIB3 in order to allow the user apparatus UE to appropriately determine the transition destination cell, a plurality of NS values for the transition destination cell (neighbor cells) in SIB3, The p-Max value corresponding to each of the plurality of NS values is included.
- the plurality of NS values included in the SIB3 are notified from the base station eNB to the user apparatus UE as, for example, a list arranged in descending order of priority (decreating order of priority).
- a plurality of p-Max values corresponding to the plurality of NS values are notified as a list in which p-Max is arranged in the same order as the arrangement order of NS values in the NS value list.
- a list in which the pair is arranged in order of priority is included in the SIB3, and the base station eNB notifies the user apparatus UE of the list. Good.
- the user apparatus UE determines whether or not to transition to another cell of the same frequency in the same frequency cell reselection.
- the user apparatus UE determines the NS value in the SIB3.
- the NS value with the highest priority is selected from among the NS values applicable to the user apparatus UE, and the NS value is further selected.
- the corresponding p-Max is selected, and the selected p-Max is applied to perform the determination.
- the user apparatus UE can apply the p-Max in “intraFreqCellReselectionInfo”.
- FIGS. 12 and FIG. 13 A description example (excerpt) of the 3GPP specification (3GPP TS 36.331) corresponding to a modified example related to SIB3 is shown in FIGS. In FIG. 12 and FIG. 13, the changes from Non-Patent Document 2 are underlined.
- FIG. 12 shows an excerpt of SIB3 (SystemInformationBlockType3 information element).
- multiMPR-InfoList is added as a list of MPR-Info.
- multiMPR-InfoList is a list in which pairs of additive Spectrum Emission (NS value) and corresponding p-Max values are arranged in order of priority.
- NS value additive Spectrum Emission
- FIG. 13 in this example, multiMPR-InfoList is a list in which pairs of additive Spectrum Emission (NS value) and corresponding p-Max values are arranged in order of priority.
- p-Max is not in MPR-Info
- the user apparatus UE applies p-Max in intraFreqCellReselectionInfo.
- the user apparatus UE applies p-Max in intraFreqCellReselectionInfo.
- FIG. 14 and FIG. 15 show other description examples (extracts) of the 3GPP specifications (3GPP TS 36.331) corresponding to the modified example related to SIB3.
- the changes from Non-Patent Document 2 are underlined.
- FIG. 14 shows an excerpt of SIB3 (SystemInformationBlockType3 information element).
- SIB3 SystemInformationBlockType3 information element
- additional-ns-values which is a list of P-max NS-valueLists
- the first P-max NS-valueList includes a list of pairs of P-max and NS-value corresponding to the freqBandIndicator in SIB1.
- the subsequent P-max NS-valueList corresponds to each additionalSpectrumEmission included in the multiBandInfoList in SIB2.
- Each P-max NS-valueList is a list in which pairs of additive Spectrum Emission (NS values) and corresponding p-Max values are arranged in order of priority.
- the user apparatus UE applies the first additional Spectrum Emission (NS value) that the user apparatus UE supports in the list.
- the base station eNB can transmit a plurality of NS values together with a plurality of p-Max values using SIB1 (or SIB2). That is, in the above-described embodiment, an example in which a plurality of NS values are transmitted using SIB2 and a plurality of p-Max values are transmitted using SIB1 has been described. However, in the modification, a plurality of NS values are used using SIB1 or SIB2. Are transmitted together with a plurality of p-Max values.
- the plurality of NS values are included in SIB1 or SIB2 as, for example, a list arranged in descending order of priority (decreating order of priority). Also, a plurality of p-Max values corresponding to the plurality of NS values are included in SIB1 or SIB2 as a list in which p-Max is arranged in the same order as the NS value arrangement order in the NS value list. Further, the NS value and the p-Max value corresponding to the NS value are paired, a list in which the pair is arranged in order of priority is included in SIB1 or SIB2, and the base station eNB notifies the user apparatus UE of the list. May be.
- (NS value 1, P-Max1), (NS value 2, P-Max2), (NS value 3, P-Max3)” is included in SIB1 or SIB2 corresponding to a certain band. It is done.
- (NS value 1, P-Max1) indicates that NS value 1 corresponds to P-Max1.
- the user apparatus UE When the user apparatus UE that has received the list included in the SIB1 or SIB2 applies the band in the corresponding cell, the user apparatus UE receives a list of NS values corresponding to the band (or a combination of the NS value and the p-Max). ), The NS value with the highest priority is selected from the NS values applicable to the user apparatus UE in the band, and the p-Max corresponding to the NS value is selected. Transmission control is performed by applying the selected p-Max.
- the list corresponding to the band applied by the user apparatus UE is “(NS value 1, P-Max 1), (NS value 2, P-Max 2), (NS value 3, P-Max 3)”,
- the user apparatus UE corresponds to the NS value 2 and the NS value 3, and the NS value 2 has a higher priority than the NS value 3
- the user apparatus UE selects the NS value 2, and the NS value 2 and this
- the maximum transmission power is controlled using P-Max2 corresponding to the.
- the user apparatus UE can apply the existing p-Max included in SIB1.
- FIG. 16 shows a description example (excerpt) of the 3GPP specification (3GPP TS 36.331) corresponding to a modified example related to SIB1.
- the changes from Non-Patent Document 2 are underlined.
- FIG. 16 shows an excerpt of SIB1 (SystemInformationBlockType1 information element).
- multiMPR-InfoList is added as a list of MPR-Info.
- multiMPR-InfoList is a list in which a set of additional Spectrum Emission (NS value) and the corresponding p-Max value is arranged in order of priority.
- NS value additional Spectrum Emission
- p-Max is not in MPR-Info
- the user apparatus UE applies the existing p-Max.
- the user apparatus UE does not support any additional Spectrum Emission (NS value) in the list, the user apparatus UE applies the existing p-Max.
- the user apparatus UE can also perform cell selection using p-Max corresponding to the NS value selected from the plurality of NS values notified by the SIB1.
- FIG. 17 and FIG. 18 show other description examples (extracts) of 3GPP specifications (3GPP TS 36.331) corresponding to the modified example related to SIB1.
- 3GPP TS 36.331 3GPP TS 36.331
- the changed part from the nonpatent literature 2 is underlined.
- FIG. 17 shows an excerpt of SIB1 (SystemInformationBlockType1 information element).
- SIB1 SystemInformationBlockType1 information element
- addition-ns-values which is a list of P-max NS-valueLists
- the first P-max NS-valueList includes a list of pairs of P-max and NS-value corresponding to the freqBandIndicator in SIB1.
- the subsequent P-max NS-valueList corresponds to each additionalSpectrumEmission included in the multiBandInfoList in SIB2.
- Each P-max NS-valueList is a list in which pairs of additive Spectrum Emission (NS values) and corresponding p-Max values are arranged in order of priority.
- the user apparatus UE applies the first additional Spectrum Emission (NS value) that the user apparatus UE supports in the list.
- FIGS. 19 and FIG. 20 A description example (excerpt) of the 3GPP specification (3GPP TS 36.331) corresponding to a modification regarding SIB2 is shown in FIGS. In FIG. 19 and FIG. 20, the changed part from Non-Patent Document 2 is underlined.
- FIG. 19 shows an excerpt of SIB2 (SystemInformationBlockType2 information element).
- SIB2 SystemInformationBlockType2 information element
- addition-ns-values which is a list of P-maxNS-valueLists
- the first P-max NS-valueList includes a list of pairs of P-max and NS-value corresponding to the freqBandIndicator in SIB1.
- the subsequent P-max NS-valueList corresponds to each additionalSpectrumEmission included in the multiBandInfoList in SIB2.
- Each P-max NS-valueList is a list in which pairs of additive Spectrum Emission (NS values) and corresponding p-Max values are arranged in order of priority.
- the user apparatus UE applies the first additional Spectrum Emission (NS value) that the user apparatus UE supports in the list.
- FIG. 21 shows a functional configuration diagram of the user apparatus UE.
- the user apparatus UE includes a DL signal reception unit 101, a UL signal transmission unit 102, an RRC processing unit 103, and a transmission power control unit 104.
- FIG. 21 shows only functional units that are particularly relevant to the present invention in the user apparatus UE, and the user apparatus UE also has a function (not shown) for performing an operation that conforms to at least LTE.
- the DL signal receiving unit 101 includes a function of receiving various downlink signals from the base station eNB and acquiring higher layer information from the received physical layer signal, and the UL signal transmitting unit 102 receives from the user apparatus UE It includes a function of generating various signals of the physical layer from information of higher layers to be transmitted and transmitting the signals to the base station eNB. Further, the DL signal receiving unit 101 includes a function of performing cell selection and cell reselection. That is, DL signal receiving section 101 selects one signaling value among a plurality of signaling values included in system information, and performs cell selection or cell reselection using the maximum transmission power corresponding to the signaling value.
- a control unit is included. The control unit may be provided outside the DL signal receiving unit 101.
- the RRC processing unit 103 receives and reads SIB1, SIB2, SIB3, SIB5 and the like described in the present embodiment, and performs the processing described with reference to FIG. 4 and the NS value and p-Max in the modification. The process of the determination is executed.
- the transmission power control unit 104 performs control of transmission power based on the received additional Spectrum Emission / additional Spectrum Emission 2, etc., and the determined maximum transmission power (p-Max / p-Max 2, etc.).
- the configuration of the user apparatus UE illustrated in FIG. 21 may be entirely realized by a hardware circuit (eg, one or a plurality of IC chips), or a part may be configured by a hardware circuit, and the other part may be a CPU. And a program.
- a hardware circuit eg, one or a plurality of IC chips
- a part may be configured by a hardware circuit, and the other part may be a CPU.
- a program e.g, one or a plurality of IC chips
- FIG. 22 is a diagram illustrating an example of a hardware (HW) configuration of the user apparatus UE.
- FIG. 22 shows a configuration closer to the mounting example than FIG.
- the UE controls an apparatus that performs processing such as an RE (Radio Equipment) module 151 that performs processing related to a radio signal, a BB (Base Band) processing module 152 that performs baseband signal processing, and a higher layer process. It has a module 153 and a USIM slot 154 which is an interface for accessing a USIM card.
- RE Radio Equipment
- BB Base Band
- the RE module 151 should transmit from the antenna by performing D / A (Digital-to-Analog) conversion, modulation, frequency conversion, power amplification, etc. on the digital baseband signal received from the BB processing module 152 Generate a radio signal.
- a digital baseband signal is generated by performing frequency conversion, A / D (Analog to Digital) conversion, demodulation, and the like on the received wireless signal, and the digital baseband signal is passed to the BB processing module 152.
- the RE module 151 includes functions such as a physical layer in the DL signal receiving unit 101 and the UL signal transmitting unit 102 in FIG.
- the BB processing module 152 performs processing for mutually converting an IP packet and a digital baseband signal.
- a DSP (Digital Signal Processor) 162 is a processor that performs signal processing in the BB processing module 152.
- the memory 172 is used as a work area for the DSP 162.
- the BB processing module 152 includes, for example, functions such as layer 2 in the DL signal reception unit 101 and the UL signal transmission unit 102 in FIG. 21, an RRC processing unit 103, and a transmission power control unit 104. Note that all or part of the functions of the RRC processing unit 103 and the transmission power control unit 104 may be included in the device control module 153.
- the device control module 153 performs IP layer protocol processing, various application processing, and the like.
- the processor 163 is a processor that performs processing performed by the device control module 153.
- the memory 173 is used as a work area for the processor 163.
- the processor 163 reads and writes data with the USIM through the USIM slot 154.
- FIG. 23 shows a functional configuration diagram of the base station eNB.
- the base station eNB includes a DL signal transmission unit 201, a UL signal reception unit 202, an RRC processing unit 203, and a transmission power control unit 204.
- FIG. 23 shows only functional units that are particularly related to the embodiment of the present invention in the base station eNB, and the base station eNB also has a function (not shown) for performing at least the operation conforming to the LTE scheme. Is.
- the DL signal transmission unit 201 includes a function of generating and transmitting various physical layer signals from higher layer information to be transmitted from the base station eNB.
- the UL signal receiving unit 202 includes a function of receiving various uplink signals from the user apparatus UE and acquiring higher layer information from the received physical layer signals.
- the RRC processing unit 203 creates and transmits SIB1, SIB2, SIB3, SIB5 and the like described in the present embodiment.
- the RRC processing unit 203 also has a function of receiving and holding UE capability information from the user apparatus UE.
- the transmission power control unit 204 performs scheduling, UL power control, and the like for the user apparatus UE in consideration of the maximum transmission power of the user apparatus UE.
- the configuration of the base station eNB shown in FIG. 23 may be realized entirely by a hardware circuit (eg, one or a plurality of IC chips), or a part may be configured by a hardware circuit, and the other part may be a CPU. And a program.
- a hardware circuit eg, one or a plurality of IC chips
- FIG. 24 is a diagram illustrating an example of a hardware (HW) configuration of the base station eNB.
- HW hardware
- FIG. 24 shows a configuration closer to the mounting example than FIG.
- the base station eNB includes an RE module 251 that performs processing related to a radio signal, a BB processing module 252 that performs baseband signal processing, a device control module 253 that performs processing such as an upper layer, a network, And a communication IF 254 which is an interface for connection.
- the RE module 251 generates a radio signal to be transmitted from the antenna by performing D / A conversion, modulation, frequency conversion, power amplification, and the like on the digital baseband signal received from the BB processing module 252.
- a digital baseband signal is generated by performing frequency conversion, A / D conversion, demodulation, and the like on the received radio signal, and passed to the BB processing module 252.
- the RE module 251 includes functions such as a physical layer in the DL signal transmission unit 201 and the UL signal reception unit 202 in FIG.
- the BB processing module 252 performs processing for mutually converting an IP packet and a digital baseband signal.
- the DSP 262 is a processor that performs signal processing in the BB processing module 252.
- the memory 272 is used as a work area for the DSP 252.
- the BB processing module 252 includes, for example, functions such as layer 2 in the DL signal transmission unit 201 and the UL signal reception unit 202 in FIG. 23, an RRC processing unit 203, and a transmission power control unit 204. Note that all or part of the functions of the RRC processing unit 203 and the transmission power control unit 204 may be included in the device control module 253.
- the device control module 253 performs IP layer protocol processing, OAM processing, and the like.
- the processor 263 is a processor that performs processing performed by the device control module 253.
- the memory 273 is used as a work area for the processor 263.
- the auxiliary storage device 283 is an HDD, for example, and stores various setting information for the base station eNB itself to operate.
- FIGS. 21 to 24 are merely examples. As long as the processing described in this embodiment (including modifications) can be realized, the mounting method (specific functional unit arrangement and the like) is not limited to a specific mounting method.
- the user apparatus in the mobile communication system including the base station and the user apparatus includes the first maximum transmission power value and the second maximum transmission power value from the base station.
- the second maximum transmission power value corresponding to the second signaling value is determined in the cell when it is determined that the signaling value is a value defined as a transmission condition in the cell where the user apparatus is located.
- the first maximum transmission power value is determined as the maximum transmission power value used in the cell.
- the maximum transmission power value corresponding to the capability of the user apparatus is determined as the maximum transmission power value used in the cell. It is good as well. With this configuration, even when the second signaling value related to the new transmission condition cannot be interpreted and the first maximum transmission power value is not received, the user apparatus appropriately determines the maximum transmission power value, and the cell You can communicate in the area.
- the transmission condition is a condition including whether or not A-MPR is applicable, for example.
- the user equipment conforms to the transmission conditions considered to be specified by 3GPP TS36.101 (eg, a table in which a new NS is added to Table 6.2.4-1 of Non-Patent Document 1). Can be operated.
- the first system information is SIB1
- the second system information is SIB1 or SIB2.
- the control means selects, as a second signaling value, a signaling value having the highest priority among the signaling values applicable to the user apparatus among a plurality of signaling values included in the second system information. Then, the second maximum transmission power value corresponding to the second signaling value may be determined as the maximum transmission power value used in the cell. With this configuration, an appropriate signaling value can be selected from a plurality of signaling values.
- the user apparatus in a mobile communication system including a base station and a user apparatus, the plurality of signaling values from the base station, and a plurality of signaling values corresponding to each of the plurality of signaling values.
- a receiving means for receiving system information including a maximum transmission power value, a signaling value selected from among a plurality of signaling values included in the system information, and a cell using the maximum transmission power corresponding to the signaling value There is provided a user apparatus comprising control means for performing selection or cell reselection.
- the user apparatus in a mobile communication system including a base station and a user apparatus, the plurality of signaling values from the base station, and a plurality of signaling values corresponding to each of the plurality of signaling values.
- a user apparatus comprising: a control unit that selects and performs transmission using the maximum transmission power corresponding to the signaling value.
- the mobile communication system includes a base station and a user apparatus, wherein the base station includes first system information including a first maximum transmission power value and a second maximum transmission power value. And transmitting means for transmitting second system information including a first signaling value and a second signaling value, wherein the user apparatus receives the first system information, the first signaling information from the base station.
- the receiving means for receiving the system information 2 and the second signaling value included in the second system information are determined to be values defined as transmission conditions in a cell where the user apparatus is located
- the user apparatus UE described in the present embodiment may be configured to include a CPU and a memory and be executed by a program being executed by a CPU (processor), or the processing described in the present embodiment.
- the configuration may be realized by hardware such as a hardware circuit provided with logic, or a program and hardware may be mixed.
- the base station eNB described in the present embodiment may include a CPU and a memory, and may be realized by a program being executed by a CPU (processor).
- the processing described in the present embodiment The configuration may be realized by hardware such as a hardware circuit provided with logic, or a program and hardware may be mixed.
- the operations of a plurality of functional units may be physically performed by one component, or the operations of one functional unit may be physically performed by a plurality of components.
- the user apparatus UE and the base station eNB have been described using functional block diagrams. However, such an apparatus may be realized by hardware, software, or a combination thereof.
- the software operated by the processor of the user apparatus UE according to the embodiment of the present invention and the software operated by the processor of the base station eNB are respectively a random access memory (RAM), a flash memory, a read-only memory (ROM), It may be stored in any appropriate storage medium such as EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, and the like.
- eNB base station UE user apparatus 101 DL signal receiving section 102 UL signal transmitting section 103 RRC processing section 104 transmission power control section 151 RE module 152 BB processing module 153 apparatus control module 154 USIM slot 201 DL signal transmitting section 202 UL signal receiving section 203 RRC processing unit 204 Transmission power control unit 251 RE module 252 BB processing module 253 Device control module 254 Communication IF
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Abstract
Description
前記基地局から、第1の最大送信電力値と第2の最大送信電力値を含む第1のシステム情報と、第1のシグナリング値と第2のシグナリング値を含む第2のシステム情報を受信する受信手段と、
前記第2のシステム情報に含まれる前記第2のシグナリング値が、前記ユーザ装置の在圏するセルにおける送信条件として規定されている値であると判定した場合に、前記第2のシグナリング値に対応する前記第2の最大送信電力値を前記セルにおいて使用する最大送信電力値として決定する制御手段とを備えるユーザ装置が提供される。
前記基地局から、複数のシグナリング値と、当該複数のシグナリング値のそれぞれに対応する複数の最大送信電力値とを含むシステム情報を受信する受信手段と、
前記システム情報に含まれる複数のシグナリング値のうちの1つのシグナリング値を選択し、当該シグナリング値に対応する最大送信電力を用いてセル選択又はセル再選択を実行する制御手段とを備えることを特徴とするユーザ装置が提供される。
前記基地局は、
第1の最大送信電力値と第2の最大送信電力値を含む第1のシステム情報と、第1のシグナリング値と第2のシグナリング値を含む第2のシステム情報を送信するための送信手段を備え、
前記ユーザ装置は、
前記基地局から、前記第1のシステム情報と、前記第2のシステム情報を受信する受信手段と、
前記第2のシステム情報に含まれる前記第2のシグナリング値が、前記ユーザ装置の在圏するセルにおける送信条件として規定されている値であると判定した場合に、前記第2のシグナリング値に対応する前記第2の最大送信電力値を前記セルにおいて使用する最大送信電力値として決定する制御手段と、を備える移動通信システムが提供される。
前記基地局から、第1の最大送信電力値と第2の最大送信電力値を含む第1のシステム情報と、第1のシグナリング値と第2のシグナリング値を含む第2のシステム情報を受信するステップと、
前記第2のシステム情報に含まれる前記第2のシグナリング値が、前記ユーザ装置の在圏するセルにおける送信条件として規定されている値であると判定した場合に、前記第2のシグナリング値に対応する前記第2の最大送信電力値を前記セルにおいて使用する最大送信電力値として決定するステップとを備える最大送信電力決定方法が提供される。
前記基地局が、第1の最大送信電力値と第2の最大送信電力値を含む第1のシステム情報と、第1のシグナリング値と第2のシグナリング値を含む第2のシステム情報を送信するステップと、
前記ユーザ装置が、前記基地局から、前記第1のシステム情報と、前記第2のシステム情報を受信するステップと、
前記ユーザ装置が、前記第2のシステム情報に含まれる前記第2のシグナリング値が、前記ユーザ装置の在圏するセルにおける送信条件として規定されている値であると判定した場合に、前記第2のシグナリング値に対応する前記第2の最大送信電力値を前記セルにおいて使用する最大送信電力値として決定するステップと、を備える最大送信電力決定方法が提供される。
図2に、本発明の実施の形態に係る通信システムの構成図を示す。図2に示すように、本実施の形態の通信システムは、基地局eNBとユーザ装置UEを含む。図2には、基地局eNBとユーザ装置UEが1つずつ示されているが、これは例であり、それぞれ複数あってもよい。
本実施の形態では、ユーザ装置UEが基地局eNBから受信するSIB1、SIB2に含まれる情報に基づいて最大送信電力を決定することから、まず、図3を参照してSIB1、SIB2受信を含むシーケンスの例を説明する。図3は、一例としてRRCアイドル状態におけるセル選択/再選択時の動作の例を示している。
本実施の形態における基地局eNBは、自セルにおけるNS値をSIB2の中のadditionalSpectrumEmissionにより報知するとともに、SIB1の中のIEであるp-Maxにより最大送信電力を報知する。なお、より具体的には、p-Max(後述するp-Max2も同様)により報知される最大送信電力は、非特許文献1の6.2.5に示されているようにPEMAXとして使用される。
次に、本実施の形態で説明した動作をサポートする通信システムが準拠するべき3GPP仕様書(3GPP TS 36.331)の記載例(抜粋)を、非特許文献2からの変更箇所に下線を引いた形で説明する。
これまでの例では、ユーザ装置UEが、セル選択/セル再選択の手順により在圏(camp on)したセルでSIB1、SIB2等を受信し、これらに含まれる情報に基づき、当該セルにおける最大送信電力等を決定することについて説明した。
次に、本発明の実施の形態(変形例を含む)におけるユーザ装置UEと基地局eNBの構成例を示す。
図21に、ユーザ装置UEの機能構成図を示す。図21に示すように、ユーザ装置UEは、DL信号受信部101、UL信号送信部102、RRC処理部103、送信電力制御部104を備える。なお、図21は、ユーザ装置UEにおいて本発明に特に関連する機能部のみを示すものであり、ユーザ装置UEは、少なくともLTEに準拠した動作を行うための図示しない機能も有するものである。
図23に、基地局eNBの機能構成図を示す。図23に示すように、基地局eNBは、DL信号送信部201、UL信号受信部202、RRC処理部203、送信電力制御部204を備える。なお、図23は、基地局eNBにおいて本発明の実施の形態に特に関連する機能部のみを示すものであり、基地局eNBは、少なくともLTE方式に準拠した動作を行うための図示しない機能も有するものである。
UE ユーザ装置
101 DL信号受信部
102 UL信号送信部
103 RRC処理部
104 送信電力制御部
151 REモジュール
152 BB処理モジュール
153 装置制御モジュール
154 USIMスロット
201 DL信号送信部
202 UL信号受信部
203 RRC処理部
204 送信電力制御部
251 REモジュール
252 BB処理モジュール
253 装置制御モジュール
254 通信IF
Claims (9)
- 基地局とユーザ装置とを備える移動通信システムにおける前記ユーザ装置であって、
前記基地局から、第1の最大送信電力値と第2の最大送信電力値を含む第1のシステム情報と、第1のシグナリング値と第2のシグナリング値を含む第2のシステム情報を受信する受信手段と、
前記第2のシステム情報に含まれる前記第2のシグナリング値が、前記ユーザ装置の在圏するセルにおける送信条件として規定されている値であると判定した場合に、前記第2のシグナリング値に対応する前記第2の最大送信電力値を前記セルにおいて使用する最大送信電力値として決定する制御手段と
を備えることを特徴とするユーザ装置。 - 前記制御手段は、前記第2のシステム情報に含まれる前記第2のシグナリング値が、前記ユーザ装置の在圏するセルにおける送信条件として規定されている値であると判定しない場合に、前記第1の最大送信電力値を前記セルにおいて使用する最大送信電力値として決定する
ことを特徴とする請求項1に記載のユーザ装置。 - 前記送信条件は、A-MPRの適用可否を含むことを特徴とする請求項1又は2に記載のユーザ装置。
- 前記第1のシステム情報はSIB1であり、前記第2のシステム情報はSIB1又はSIB2であることを特徴とする請求項1ないし3のうちいずれか1項に記載のユーザ装置。
- 前記制御手段は、前記第2のシステム情報に含まれる複数のシグナリング値の中で、前記ユーザ装置が適用可能なシグナリング値のうち、優先度の最も高いシグナリング値を前記第2のシグナリング値として選択し、当該第2のシグナリング値に対応する前記第2の最大送信電力値を前記セルにおいて使用する最大送信電力値として決定する
ことを特徴とする請求項1ないし4のうちいずれか1項に記載のユーザ装置。 - 基地局とユーザ装置とを備える移動通信システムにおける前記ユーザ装置であって、
前記基地局から、複数のシグナリング値と、当該複数のシグナリング値のそれぞれに対応する複数の最大送信電力値とを含むシステム情報を受信する受信手段と、
前記システム情報に含まれる複数のシグナリング値のうちの1つのシグナリング値を選択し、当該シグナリング値に対応する最大送信電力を用いてセル選択又はセル再選択を実行する制御手段と
を備えることを特徴とするユーザ装置。 - 基地局とユーザ装置とを備える移動通信システムであって、
前記基地局は、
第1の最大送信電力値と第2の最大送信電力値を含む第1のシステム情報と、第1のシグナリング値と第2のシグナリング値を含む第2のシステム情報を送信するための送信手段を備え、
前記ユーザ装置は、
前記基地局から、前記第1のシステム情報と、前記第2のシステム情報を受信する受信手段と、
前記第2のシステム情報に含まれる前記第2のシグナリング値が、前記ユーザ装置の在圏するセルにおける送信条件として規定されている値であると判定した場合に、前記第2のシグナリング値に対応する前記第2の最大送信電力値を前記セルにおいて使用する最大送信電力値として決定する制御手段と、を備える
ことを特徴とする移動通信システム。 - 基地局とユーザ装置とを備える移動通信システムにおける前記ユーザ装置が実行する最大送信電力決定方法であって、
前記基地局から、第1の最大送信電力値と第2の最大送信電力値を含む第1のシステム情報と、第1のシグナリング値と第2のシグナリング値を含む第2のシステム情報を受信するステップと、
前記第2のシステム情報に含まれる前記第2のシグナリング値が、前記ユーザ装置の在圏するセルにおける送信条件として規定されている値であると判定した場合に、前記第2のシグナリング値に対応する前記第2の最大送信電力値を前記セルにおいて使用する最大送信電力値として決定するステップと
を備えることを特徴とする最大送信電力決定方法。 - 基地局とユーザ装置とを備える移動通信システムにおいて実行される最大送信電力決定方法であって、
前記基地局が、第1の最大送信電力値と第2の最大送信電力値を含む第1のシステム情報と、第1のシグナリング値と第2のシグナリング値を含む第2のシステム情報を送信するステップと、
前記ユーザ装置が、前記基地局から、前記第1のシステム情報と、前記第2のシステム情報を受信するステップと、
前記ユーザ装置が、前記第2のシステム情報に含まれる前記第2のシグナリング値が、前記ユーザ装置の在圏するセルにおける送信条件として規定されている値であると判定した場合に、前記第2のシグナリング値に対応する前記第2の最大送信電力値を前記セルにおいて使用する最大送信電力値として決定するステップと、
を備えることを特徴とする最大送信電力決定方法。
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