WO2022123778A1 - 端末、無線通信方法及び基地局 - Google Patents
端末、無線通信方法及び基地局 Download PDFInfo
- Publication number
- WO2022123778A1 WO2022123778A1 PCT/JP2020/046319 JP2020046319W WO2022123778A1 WO 2022123778 A1 WO2022123778 A1 WO 2022123778A1 JP 2020046319 W JP2020046319 W JP 2020046319W WO 2022123778 A1 WO2022123778 A1 WO 2022123778A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mpe
- report
- transmission
- mac
- specific
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 60
- 238000004891 communication Methods 0.000 title claims description 55
- 230000005540 biological transmission Effects 0.000 claims abstract description 129
- 230000001960 triggered effect Effects 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 11
- 230000009467 reduction Effects 0.000 claims description 5
- 238000012545 processing Methods 0.000 description 52
- 238000005259 measurement Methods 0.000 description 19
- 230000011664 signaling Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 11
- 230000009977 dual effect Effects 0.000 description 10
- 238000001914 filtration Methods 0.000 description 9
- 238000007726 management method Methods 0.000 description 9
- 238000010295 mobile communication Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 8
- 238000013507 mapping Methods 0.000 description 7
- 238000004364 calculation method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000003321 amplification Effects 0.000 description 4
- 238000012937 correction Methods 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 230000002776 aggregation Effects 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 238000013468 resource allocation Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 101000741965 Homo sapiens Inactive tyrosine-protein kinase PRAG1 Proteins 0.000 description 1
- 102100038659 Inactive tyrosine-protein kinase PRAG1 Human genes 0.000 description 1
- 108700026140 MAC combination Proteins 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 101150071746 Pbsn gene Proteins 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000012384 transportation and delivery Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
- H04W72/231—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
Definitions
- This disclosure relates to terminals, wireless communication methods and base stations in next-generation mobile communication systems.
- LTE Long Term Evolution
- UMTS Universal Mobile Telecommunications System
- 3GPP Rel.10-14 LTE-Advanced (3GPP Rel.10-14) has been specified for the purpose of further increasing the capacity and sophistication of LTE (Third Generation Partnership Project (3GPP) Release (Rel.) 8, 9).
- a successor system to LTE for example, 5th generation mobile communication system (5G), 5G + (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel.15 or later, etc.
- 5G 5th generation mobile communication system
- 6G 6th generation mobile communication system
- NR New Radio
- the user terminal (User Equipment (UE)) is a UL data channel (eg, Physical Uplink Shared Channel (PUSCH)) and a UL control channel (eg, Physical Uplink).
- PUSCH Physical Uplink Shared Channel
- UCI Uplink Control Information
- PUCCH Physical Uplink Control Channel
- MPE Maximum Permitted Exposure
- one of the purposes of this disclosure is to provide a terminal, a wireless communication method, and a base station capable of appropriately reporting on MPE.
- the terminal is a receiver that receives an upper layer parameter corresponding to a report on a beam-specific maximum permissible exposure, and a medium access control (MAC) control element (CE) based on the upper layer parameter. It is characterized by having a control unit for controlling the transmission of the report using the above.
- MAC medium access control
- CE control element
- FIG. 1 shows Rel. It is a figure which shows the example of the single entry PHR MAC CE in 16.
- FIG. 2 shows Rel. It is a figure which shows the 1st example of the multi-entry PHR MAC CE in 16.
- FIG. 3 shows Rel. It is a figure which shows the 2nd example of the multi-entry PHR MAC CE in 16.
- FIG. 4 is a diagram showing an example of PHR MAC CE used for beam-specific MPE reporting.
- FIG. 5 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.
- FIG. 6 is a diagram showing an example of the configuration of the base station according to the embodiment.
- FIG. 7 is a diagram showing an example of the configuration of the user terminal according to the embodiment.
- FIG. 8 is a diagram showing an example of the hardware configuration of the base station and the user terminal according to the embodiment.
- MPE Maximum Permitted Exposure
- FCC Federal Communication Commission
- ⁇ Restriction method 1> a limitation using power-management maximum power reduction (P-MPR) is specified.
- P-MPR power-management maximum power reduction
- the UE maximum output power P CMAX, f, c is such that the corresponding P UMAX, f, c (measured maximum output power, measured set maximum UE output power) satisfies the following equation (1). , Set.
- EIRP max is assumed to be the maximum value of the corresponding measured peak equivalent isotropic radiated power (EIRP). It is assumed that P-MPR f and c are values indicating a reduction in the maximum output power permitted for the carrier f of the serving cell c. The P-MPR f, c is introduced into the equation of the UE maximum output power P CMAX, f, c in which the carrier f of the serving cell c is set. This allows the UE to report the maximum output transmit power available to the base station (eg, gNB). This report can be used by the base station to make scheduling decisions.
- the base station eg, gNB
- P-MPR f, c to ensure compliance with available electromagnetic energy absorption requirements and address unwanted radiation / self-defense requirements in the case of simultaneous transmissions on multiple RATs for scenarios outside the scope of 3GPP RAN use. It may be used, or it may be used to ensure compliance with the available electromagnetic energy absorption requirements in cases where proximity detection is used to address requirements that require lower maximum output power.
- UE capability information is introduced to notify the uplink transmission rate that the UE can transmit without the need to apply P-MPR. rice field.
- the capacity information may be referred to as the maximum uplink duty ratio (maxUplinkDutyCycle-FR2) in Frequency Range 2 (FR2).
- MaxUplinkDutyCycle-FR2 corresponds to the upper layer parameter.
- maxUplinkDutyCycle-FR2 may be the upper limit of the UL transmission ratio within a certain evaluation period (for example, 1 second). Rel. At 15 NR, this value is any of n15, n20, n25, n30, n40, n50, n60, n70, n80, n90, n100, and is 15%, 20%, 25%, 30%, 40%, respectively. , 50%, 60%, 70%, 80%, 90%, 100%.
- maxUplinkDutyCycle-FR2 may be applied to all UE power classes of FR2. Note that maxUplinkDutyCycle-FR2 does not have to specify a default value.
- the UE will perform P-MPR according to UL scheduling.
- the restrictions used may be applied. Otherwise, the UE may not apply the P-MPR.
- MPE requirement electromagnetic power density exposure requirement
- ⁇ MPE report> Considering urging UEs equipped with multiple panels (multi-panels) to select UL transmission beams based on UL beam instructions and considering UL coverage loss due to MPE for high-speed selection of UL panels. Has been done.
- the question is how to speed up the beam / panel selection based on MPE and how to inform the NW of the selection to avoid blind detection by the network. If beam / panel selection based on MPE is not performed at high speed, system performance may be degraded, such as a decrease in throughput. Also, if the UE voluntarily changes the UL transmit beam and the network does not know the changed UL transmit beam, the network will perform blind detection to determine the UL receive beam, resulting in reduced throughput, etc. There is a risk of performance degradation.
- the UE reports that the uplink transmit beam does not meet the maximum permissible exposure (MPE) requirement.
- MPE maximum permissible exposure
- the UE If the UE is set up for an MPE problem with a report triggered by the UE (eg, by RRC layer signaling) and the UE detects an MPE problem for the indicated UL beam, the UE will experience an MPE problem. May be reported.
- a report triggered by the UE eg, by RRC layer signaling
- MPE events, MPE problems, MPE failures, failure to meet MPE requirements, and failure to pass MPE requirements may be read as interchangeable.
- MPE safe, MPE conformance, no MPE problem, no MPE failure, meeting MPE requirements, and being able to pass MPE requirements may be read as interchangeable.
- the report of the occurrence of the MPE problem, the report of the MPE problem, the first report, and the request for recovery (solution) of the MPE problem may be read as each other.
- the UE states that the UL transmit beam or reference signal (RS) specified for UL transmit (eg, PUSCH) does not meet the MPE requirement (the power parameter for the indicated UL transmit beam does not meet the MPE requirement). ), The MPE problem may be detected (determined).
- the UL transmission beam instruction may be an SRS resource indicator (SRI) that indicates a sounding reference signal (SRS) resource for the PUSCH, or spatial relational information for at least one of the PUCCH, the PUSCH, the SRS, and the PRACH. Alternatively, it may be a transmission configuration indicator (TCI) state (state) or a pseudo collocation (quasi co-location (QCL)) assumption (assumption).
- SRI SRS resource indicator
- TCI transmission configuration indicator
- QCL pseudo collocation
- the MPE requirement may meet at least one of the following: -The P-MPR f, c required in consideration of MPE is larger than the P-MPR threshold. -PCMAX, f, c (maximum output power set in the UE with respect to the carrier f of the serving cell c) calculated in consideration of MPE is smaller than the PCMAX threshold. -The Power Headroom (PH) value calculated in consideration of MPE (for example, real PH, virtual PH) is smaller than the PH threshold value.
- PH Power Headroom
- At least one of the P-MPR threshold, the PCMAX threshold, and the PH threshold may be predefined or may be set.
- the UE may report the occurrence of the MPE problem in response to the detection of the MPE problem.
- the UE may determine and report a UL transmit beam / panel that meets the MPE requirements in response to the detection of an MPE problem occurrence.
- UL transmission beam / panel, MPE conforming beam / panel, MPE safe beam / panel, candidate beam / panel, and new UL transmission beam / panel that meet MPE requirements may be read as each other.
- MPE conforming beam / panel report, MPE conforming beam / panel list, UL transmission beam / panel change plan may be read interchangeably.
- the UE may report at least one determined MPE conforming beam / panel and manage the UL beam.
- New MAC CE New with new logical channel ID (LCID) for at least one report of MPE problem occurrence and information about beams / panels (MPE compliant beams / panels) that meet MPE requirements for one or more cells and BWP.
- a medium access control control element (MAC CE) may be defined.
- the new MAC CE may indicate at least one of the new UL transmit beam / panel and the cell in which the MPE problem has occurred.
- the new MAC CE may include at least one of the following contents 1-8.
- the MAC CE may include a field for one or more cells / BWP.
- the MAC CE may include a cell / BWP index.
- the MAC CE may include one or more or up to N MPE compatible beam / panel indexes for each of the plurality of cells / BWP.
- the estimated remaining power may be a PH value based on actual transmission or reference format (virtual transmission) in consideration of MPE, or Power Headroom Reporting (PHR) in consideration of MPE for each beam. May be good.
- the PHR may include the contents in the PHR MAC CE (at least one of PH type, PH value, PCMAX, f, c ).
- the beam / panel index may be an SSB / CSI-RS / SRS index, or a beam / panel index may be set together with an SSB / CSI-RS / SRS index.
- the panel index may be an RS group / RS set index, an antenna port / antenna port group / antenna port set index, an antenna assumption / antenna mode index, or any other new index.
- mpe-Reporting indicates whether the UE reports MPE P-MPR in PHR MAC CE.
- the mpe-ProhibitTimer is a timer started when the MPE P-MPR report is triggered, and indicates the number of subframes.
- mpe-Threshold indicates the P-MPR threshold [dB] for MPE P-MPR reporting when FR2 is set.
- mpe-Reporting is configured, mpe-ProhibitTimer is not running, and is applied to meet MPE requirements in at least one activated serving since the last transmission of PHR on the MAC entity.
- PHR is triggered when the measured P-MPR is greater than or equal to mpe-Threshold.
- mpe-Reporting is set, mpe-ProhibitTimer is not running, and P-MPR applied and measured to meet MPE requirements in at least one activated serving is greater than or equal to mpe-Threshold. If, the MPE P-MPR report is triggered.
- This PHR MAC CE may be either a multi-entry PHR MAC CE (multi-PHR) or a single-entry PHR MAC CE (single PHR).
- the UE When the MPE P-MPR report is triggered, the UE starts or restarts the mpe-ProhibitTimer and cancels the triggered MPE P-MPR report for the serving cell contained in the PHR MAC CE.
- FIG. 1 shows Rel. It is a figure which shows the example of the single entry PHR MAC CE in 16.
- the "P” field indicates the power backoff applied to meet the MPE requirements if mpe-Reporting is configured, and the power management power backoff if mpe-Reporting is not configured for the MAC entity (UE). Indicates whether is applicable.
- the "P CMAX, f, c " field indicates the P CMAX, f, c used in the calculation of the previous PH field.
- “R” indicates a reserve bit.
- the "PH” field indicates the power headroom level.
- the "P” field indicates the power backoff applied to meet the MPE requirement when mpe-Reporting is configured.
- the "MPE” field indicates the power backoff applied to meet the MPE requirement when mpe-Reporting is set and the "P" field is set to 1.
- the "MPE” field becomes a reserve bit (R) when mpe-Reporting is not set or 0 is set in the "P" field.
- FIG. 2 shows Rel. It is a figure which shows the 1st example of the multi-entry PHR MAC CE in 16. The example of FIG. 2 applies when the largest serving cell index in the serving cell set on the uplink is less than 8.
- FIG. 3 shows Rel. It is a figure which shows the 2nd example of the multi-entry PHR MAC CE in 16. The example of FIG. 3 is applied when the largest serving cell index in the serving cell set in the uplink is 8 or more.
- the “C i ” field in FIGS. 2 and 3 indicates the presence of a “PH” field in the serving cell having the serving cell index i.
- the "V” field indicates whether the PH value is based on the actual transmission or the reference format.
- each field (“P”, “R”, “PH”, “ PCMAX, f, c ”, “MPE”) shown in FIG. 1 is set for each serving cell. ..
- the UE transmits a report regarding the MPE of the UL transmission beam.
- how to report on MPE when the UE uses multiple transmit beams / panels has not been investigated. If the report on MPE is not done properly, the system performance such as throughput may decrease.
- the present inventors have conceived a terminal capable of appropriately reporting on MPE when the UE uses a plurality of transmission beams / panels.
- a / B / C and “at least one of A, B and C” may be read interchangeably.
- cell, CC, carrier, BWP, DL BWP, UL BWP, active DL BWP, active UL BWP, and band may be read as each other.
- the index, the ID, the indicator, and the resource ID may be read as each other.
- support, control, controllable, working, working may be read interchangeably.
- configuration, activate, update, indicate, enable, specify, and select may be read as each other.
- MAC CE and activation / deactivation commands may be read interchangeably.
- the upper layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, or a combination thereof.
- RRC Radio Resource Control
- MAC Medium Access Control
- RRC, RRC signaling, RRC parameters, higher layers, higher layer parameters, RRC information elements (IE), and RRC messages may be read interchangeably.
- MAC CE MAC Control Element
- PDU MAC Protocol Data Unit
- the broadcast information includes, for example, a master information block (Master Information Block (MIB)), a system information block (System Information Block (SIB)), a minimum system information (Remaining Minimum System Information (RMSI)), and other system information ( Other System Information (OSI)) may be used.
- MIB Master Information Block
- SIB System Information Block
- RMSI Minimum System Information
- OSI Other System Information
- spatial relationship, spatial domain transmit filter, UE spatial domain transmit filter, UE transmit beam, UL beam, UL transmit beam, UL precoding, UL precoder, PL-RS May be read as interchangeable with each other.
- the QCL type X-RS, the DL-RS associated with the QCL type X, the DL-RS having the QCL type X, the source of the DL-RS, the SSB, the CSI-RS, and the SRS may be read as each other. good.
- the UE receives a higher layer parameter (RRC parameter) corresponding to a report (MPE report) on the maximum permissible exposure (MPE) of beam specific, and based on the higher layer parameter, MAC CE (PHR MAC CE). ) Is used to control the transmission of the report.
- RRC parameter a higher layer parameter
- MPE report a report
- PHR MAC CE MAC CE
- beams, panels, beams and panels may be read interchangeably.
- MPE, MPE P-MPR, and P-MPR may be read as each other.
- An RRC parameter new-mpe-Reporting may be defined indicating whether to send a beam-specific MPE report.
- new-mpe-Reporting When new-mpe-Reporting is configured, the UE makes beam-specific P-MPR measurements to meet MPE requirements and triggers beam-specific MPE reporting.
- a new-mpe-Prohibit Timer which is a timer executed when the MPE report is triggered, may be set.
- Multiple new-mpe-ProhibitTimers may be set, each of which may be associated with a beam.
- an MPE report is triggered for a beam, it starts or restarts the new-mpe-Prohibit Timer associated with the corresponding UE beam and triggers for the beam of the serving cell contained in the PHR MAC CE or the new MPE MAC CE. You may cancel the MPE P-MPR report that was made.
- the new MPE MAC CE may be, for example, the MAC CE shown in the third embodiment described later.
- the new-mpe-Threshold which is the threshold value corresponding to the beam power management maximum power reduction (P-MPR) is set and applied to all the set beams. You may.
- Multiple new-mpe-Thresholds may be set, each related to the beam.
- the UE may compare the beam-specific P-MPR measured to meet the MPE requirement with the corresponding (related) new-mpe-Threshold.
- new-mpe-Reporting is set, new-mpe-ProhibitTimer is not running, and MPE requirements are set for at least one activated serving since the last transmission of PHR on the MAC entity.
- the PHR may be triggered if the P-MPR of the beam applied and measured to meet is greater than or equal to the new-mpe-Threshold of the corresponding beam.
- beam-specific RRC parameters may be set for each UE (terminal), cell group, serving cell, or bandwidth part (BWP).
- the beam-specific RRC parameter in each aspect of this embodiment may be at least one of new-mpe-Reporting, new-mpe-ProhibitTimer, and new-mpe-Threshold shown in the first embodiment.
- the RRC parameter (RRC parameter corresponding to the MPE report), the MPE report, the P-MPR report, and the MPE P-MPR report may be read as each other.
- Beam-specific RRC parameters are set for each UE and may be applied to all FR2 serving cells.
- Beam-specific RRC parameters are set for each UE cell group (Master cell group (MCG) / Secondary cell group (SCG) / PUCCH cell group) and are applied to all serving cells in the set cell group. good.
- the beam-specific RRC parameters are set for each serving cell of the UE, and different parameters may be set for different serving cells.
- the beam-specific RRC parameters are set for each BWP in the serving cell of the UE, and different parameters may be set for different BWPs.
- the following embodiments A to D will be described with respect to the relationship between the UE-specific MPE report and the beam-specific MPE report. Any of aspects A to D may be combined with any of aspects 2-1 to 2-4.
- the RRC parameters corresponding to the UE-specific MPE report are described in 3GPP Rel. It may be at least one of 16 mpe-Reporting, mpe-ProhibitTimer, mpe-Threshold.
- the UE-specific MPE report may be, for example, a report by MAC CE shown in FIGS. 1 to 3.
- the UE may be set to either one of the UE-specific MPE report and the beam-specific MPE report. The UE does not have to assume that the UE-specific MPE report is set when the beam-specific MPE report is set. The UE does not have to assume that the beam-specific MPE report is set when the UE-specific MPE report is set.
- the UE may be set with either one of the UE-specific MPE report and the beam-specific MPE report, and may transmit any one of the reports.
- the same MPE report (UE-specific or beam-specific) may be set for different cell groups.
- the same MPE report (UE-specific or beam-specific) may be set for different cells (serving cells).
- the same MPE report (UE-specific or beam-specific) may be set for different BWPs in the serving cell.
- the UE may be configured with both a UE-specific MPE report and a beam-specific MPE report, and may transmit both reports.
- the UE may be configured with different MPE reports for different cells / cell groups / BWPs.
- Aspect 2-2 different MPE reports (UE-specific or beam-specific) may be set for different cell groups.
- aspects 2-3 different MPE reports (UE-specific or beam-specific) may be set for different cells (serving cells).
- aspects 2-4 different MPE reports (UE-specific or beam-specific) may be set for different BWPs.
- the UE may be configured with both a UE-specific MPE report and a beam-specific MPE report, and may transmit both reports.
- the UE may be configured with the same MPE report for different cells / cell groups / BWPs.
- the UE determines (selects) at least one of the UE-specific MPE report and the beam-specific MPE report based on the UE implementation or predetermined rules (specifications). May be good.
- the UE may apply the beam-specific MPE report if both the UE-specific MPE report and the beam-specific MPE report are set.
- the UE may use additional conditions based on additional settings as to whether to apply the UE-specific MPE report or the beam-specific MPE report.
- the UE may send a UE-specific MPE report using MAC CE if at least one of the following conditions (1) and (2) is satisfied. (1) PHR was triggered. (2) Beam-specific MPE reporting is not triggered.
- the UE may use the MAC CE to send a beam-specific MPE report.
- the UE-specific MPE report when multiple (all) beams are triggered, the UE-specific MPE report may be included in the MAC CE.
- UE-specific MPE reporting (mpe-Reporting) and beam-specific MPE reporting (new-mpe-Reporting) trigger conditions due to different MPE problem detection metrics or thresholds (mpe-Threshold / new-mpe-Threshold)
- the UE may follow the following procedure.
- the UE initiates the corresponding MPE procedure # 1 and then of the mpe-Reporting and new-mpe-Reporting.
- another parameter corresponding to another MPE procedure # 2 is set (detected)
- the UE performs any of the following processes (1) to (4).
- the MPE procedures # 1 and # 2 are, for example, a UE-specific MPE reporting (mpe-Reporting) procedure or a beam-specific MPE reporting (new-mpe-Reporting) procedure.
- the UE may decide whether to continue or terminate the already started MPE procedure # 1 depending on whether the already started MPE procedure # 1 is new-mpe-Reporting or mpe-Reporting. .. For example, the UE may continue MPE procedure # 1 if the already started MPE procedure # 1 is new-mpe-Reporting. The UE may end MPE procedure # 1 if the already started MPE procedure # 1 is mpe-Reporting.
- the UE decides whether to continue or terminate the already started MPE procedure # 1 depending on whether the MPE procedure # 2 corresponding to another detected MPE problem is new-mpe-Reporting or mpe-Reporting. You may decide. For example, the UE may terminate MPE procedure # 1 if MPE procedure # 2 is new-mpe-Reporting. The UE may continue MPE procedure # 1 if MPE procedure # 2 is mpe-reporting.
- the trigger conditions for mpe-Reporting and new-mpe-Reporting may be the same.
- the UE may select either mpe-Reporting or new-mpe-Reporting based on a predetermined rule (specification).
- a predetermined rule specificallyation.
- the UE-specific trigger condition for MPE reporting is that the P-MPR measured to meet the MPE requirement is greater than or equal to mpe-Threshold.
- the panel-specific trigger condition for MPE reporting is that the P-MPR of the panel measured to meet the MPE requirement is greater than the new-mpe-Threshold.
- each set (entry) of PHR MAC CE may correspond to a beam / panel in a serving cell.
- the size of the MAC CE may be related to the maximum number of panels (maximum number of UL panels) in the serving cell / cell group / FR / UE. In this case, the UE does not have to report the beam ID / panel ID because the beam ID / panel ID is determined by the order of the entries in the MAC CE.
- FIG. 4 is a diagram showing an example of PHR MAC CE used for beam-specific MPE reporting.
- PHR MAC CE includes MPE reports for panels # 0 to # 2. That is, MPE reporting of up to 3 panels is possible. Two octets are used for one panel. Panels # 0 to # 2 may be replaced for beams # 0 to # 2.
- the size of the beam ID / panel ID / MAC CE may be added to the MAC CE.
- the beam ID / panel ID / MAC CE size field at least one of the P field and the R field, or at least one value represented by at least one of the P field and the R field may be reused. And new fields may be added.
- the beam / panel ID By including the beam ID / panel ID, the beam / panel can be identified even when multiple (partial) beams / panels are reported.
- the size of MAC CE the size can be specified even if the size of MAC CE is variable. In the mode 3-2, only the beam / panel to which the power backoff is applied is reported by MAC CE, so that the power backoff does not have to be shown again in the P field. Whether to reuse an existing field or add a new one may be determined by the maximum number of panels in the UE. The UE may determine the beam / panel to report according to the following condition 1 or condition 2.
- a UE may report at least one MPE safe beam (if present) with one or more beams corresponding to a P-MPR greater than or equal to the new-mpe-Threshold.
- the MPE safe beam is, for example, one or more beams corresponding to P-MPR less than new-mpe-Threshold.
- the number of sets of PHR MAC CE octets in different serving cells may be the same or different. For example, if one serving cell has a UE-specific MPE and another serving cell has a panel-specific MPE, even if the number of sets of PHR MAC CE octets used for MPE reporting of each serving cell is different. good. If the maximum number of panels for each serving cell is different, or if each serving cell reports the effect of a different number of panels, the number of sets of PHR MAC CE octets used for MPE reporting may be different.
- the UE may transmit (report) the UE capability indicating whether it supports beam-specific MPE reporting per UE / per cell group / per serving cell.
- the UE may transmit (report) a UE capability indicating whether it supports a beam-specific new-mpe-Prohibit Timer per UE / per cell group / per serving cell.
- the UE may transmit (report) a UE capability indicating whether it supports a beam-specific new-mpe-Threshold for each UE / per cell group / per serving cell.
- the UE may transmit (report) the UE capability indicating whether both the UE-specific MPE report and the beam-specific are set for the same cell / cell group (or different cell / cell group).
- the UE may transmit (report) a UE capability indicating whether to transmit a beam-specific MPE report for all beams.
- the UE may transmit (report) the UE capability indicating whether to report the beam ID / panel ID in the MAC CE for beam-specific MPE reporting.
- wireless communication system Wireless communication system
- communication is performed using any one of the wireless communication methods according to each of the above-described embodiments of the present disclosure or a combination thereof.
- FIG. 5 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.
- the wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), etc. specified by Third Generation Partnership Project (3GPP). ..
- the wireless communication system 1 may support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between a plurality of Radio Access Technologies (RATs).
- MR-DC is a dual connectivity (E-UTRA-NR Dual Connectivity (EN-DC)) between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR, and a dual connectivity (NR-E) between NR and LTE.
- E-UTRA-NR Dual Connectivity Evolved Universal Terrestrial Radio Access (E-UTRA)
- NR-E dual connectivity
- NE-DC -UTRA Dual Connectivity
- the LTE (E-UTRA) base station (eNB) is the master node (Master Node (MN)), and the NR base station (gNB) is the secondary node (Secondary Node (SN)).
- the base station (gNB) of NR is MN
- the base station (eNB) of LTE (E-UTRA) is SN.
- the wireless communication system 1 has dual connectivity between a plurality of base stations in the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) in which both MN and SN are NR base stations (gNB). )) May be supported.
- a plurality of base stations in the same RAT for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) in which both MN and SN are NR base stations (gNB). )
- NR-NR Dual Connectivity NR-DC
- gNB NR base stations
- the wireless communication system 1 includes a base station 11 that forms a macrocell C1 having a relatively wide coverage, and a base station 12 (12a-12c) that is arranged in the macrocell C1 and forms a small cell C2 that is narrower than the macrocell C1. You may prepare.
- the user terminal 20 may be located in at least one cell. The arrangement, number, and the like of each cell and the user terminal 20 are not limited to the mode shown in the figure.
- the base stations 11 and 12 are not distinguished, they are collectively referred to as the base station 10.
- the user terminal 20 may be connected to at least one of a plurality of base stations 10.
- the user terminal 20 may use at least one of carrier aggregation (Carrier Aggregation (CA)) and dual connectivity (DC) using a plurality of component carriers (Component Carrier (CC)).
- CA Carrier Aggregation
- DC dual connectivity
- CC Component Carrier
- Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)).
- the macrocell C1 may be included in FR1 and the small cell C2 may be included in FR2.
- FR1 may be in a frequency band of 6 GHz or less (sub 6 GHz (sub-6 GHz)), and FR 2 may be in a frequency band higher than 24 GHz (above-24 GHz).
- the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a frequency band higher than FR2.
- the user terminal 20 may perform communication using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD) in each CC.
- TDD Time Division Duplex
- FDD Frequency Division Duplex
- the plurality of base stations 10 may be connected by wire (for example, optical fiber compliant with Common Public Radio Interface (CPRI), X2 interface, etc.) or wirelessly (for example, NR communication).
- wire for example, optical fiber compliant with Common Public Radio Interface (CPRI), X2 interface, etc.
- NR communication for example, when NR communication is used as a backhaul between base stations 11 and 12, the base station 11 corresponding to the higher-level station is an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to a relay station (relay) is IAB. It may be called a node.
- IAB Integrated Access Backhaul
- relay station relay station
- the base station 10 may be connected to the core network 30 via another base station 10 or directly.
- the core network 30 may include at least one such as Evolved Packet Core (EPC), 5G Core Network (5GCN), and Next Generation Core (NGC).
- EPC Evolved Packet Core
- 5GCN 5G Core Network
- NGC Next Generation Core
- the user terminal 20 may be a terminal compatible with at least one of communication methods such as LTE, LTE-A, and 5G.
- a wireless access method based on Orthogonal Frequency Division Multiplexing may be used.
- OFDM Orthogonal Frequency Division Multiplexing
- DL Downlink
- UL Uplink
- CP-OFDM Cyclic Prefix OFDM
- DFT-s-OFDM Discrete Fourier Transform Spread OFDM
- OFDMA Orthogonal Frequency Division Multiple. Access
- SC-FDMA Single Carrier Frequency Division Multiple Access
- the wireless access method may be called a waveform.
- another wireless access system for example, another single carrier transmission system, another multi-carrier transmission system
- the UL and DL wireless access systems may be used as the UL and DL wireless access systems.
- a downlink shared channel Physical Downlink Shared Channel (PDSCH)
- a broadcast channel Physical Broadcast Channel (PBCH)
- a downlink control channel Physical Downlink Control
- PDSCH Physical Downlink Control
- the uplink shared channel Physical Uplink Shared Channel (PUSCH)
- the uplink control channel Physical Uplink Control Channel (PUCCH)
- the random access channel shared by each user terminal 20 are used.
- Physical Random Access Channel (PRACH) Physical Random Access Channel or the like may be used.
- User data, upper layer control information, System Information Block (SIB), etc. are transmitted by PDSCH.
- User data, upper layer control information, and the like may be transmitted by the PUSCH.
- the Master Information Block (MIB) may be transmitted by the PBCH.
- Lower layer control information may be transmitted by PDCCH.
- the lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of PDSCH and PUSCH.
- DCI Downlink Control Information
- the DCI that schedules PDSCH may be called DL assignment, DL DCI, or the like, and the DCI that schedules PUSCH may be called UL grant, UL DCI, or the like.
- the PDSCH may be read as DL data, and the PUSCH may be read as UL data.
- a control resource set (COntrol REsource SET (CORESET)) and a search space (search space) may be used for PDCCH detection.
- CORESET corresponds to a resource for searching DCI.
- the search space corresponds to the search area and search method of PDCCH candidates (PDCCH candidates).
- One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a search space based on the search space settings.
- One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels.
- One or more search spaces may be referred to as a search space set.
- the "search space”, “search space set”, “search space setting”, “search space set setting”, “CORESET”, “CORESET setting”, etc. of the present disclosure may be read as each other.
- channel state information (Channel State Information (CSI)
- delivery confirmation information for example, it may be called Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.
- scheduling request for example.
- Uplink Control Information (UCI) including at least one of SR) may be transmitted.
- the PRACH may transmit a random access preamble to establish a connection with the cell.
- downlinks, uplinks, etc. may be expressed without “links”. Further, it may be expressed without adding "Physical" to the beginning of various channels.
- a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), and the like may be transmitted.
- the DL-RS includes a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), and a reference signal for demodulation (DeModulation).
- CRS Cell-specific Reference Signal
- CSI-RS Channel State Information Reference Signal
- DMRS positioning reference signal
- PRS Positioning Reference Signal
- PTRS phase tracking reference signal
- the synchronization signal may be, for example, at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)) and a secondary synchronization signal (Secondary Synchronization Signal (SSS)).
- PSS Primary Synchronization Signal
- SSS Secondary Synchronization Signal
- the signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be referred to as SS / PBCH block, SS Block (SSB) and the like.
- SS, SSB and the like may also be called a reference signal.
- a measurement reference signal Sounding Reference Signal (SRS)
- a demodulation reference signal DMRS
- UL-RS Uplink Reference Signal
- UE-specific Reference Signal UE-specific Reference Signal
- FIG. 6 is a diagram showing an example of the configuration of the base station according to the embodiment.
- the base station 10 includes a control unit 110, a transmission / reception unit 120, a transmission / reception antenna 130, and a transmission line interface 140.
- the control unit 110, the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140 may each be provided with one or more.
- the functional block of the characteristic portion in the present embodiment is mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. A part of the processing of each part described below may be omitted.
- the control unit 110 controls the entire base station 10.
- the control unit 110 can be composed of a controller, a control circuit, and the like described based on the common recognition in the technical field according to the present disclosure.
- the control unit 110 may control signal generation, scheduling (for example, resource allocation, mapping) and the like.
- the control unit 110 may control transmission / reception, measurement, and the like using the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140.
- the control unit 110 may generate data to be transmitted as a signal, control information, a sequence, and the like, and transfer the data to the transmission / reception unit 120.
- the control unit 110 may perform call processing (setting, release, etc.) of the communication channel, state management of the base station 10, management of radio resources, and the like.
- the transmission / reception unit 120 may include a baseband unit 121, a Radio Frequency (RF) unit 122, and a measurement unit 123.
- the baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212.
- the transmitter / receiver 120 includes a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitter / receiver circuit, and the like, which are described based on the common recognition in the technical field according to the present disclosure. be able to.
- the transmission / reception unit 120 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit.
- the transmission unit may be composed of a transmission processing unit 1211 and an RF unit 122.
- the receiving unit may be composed of a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.
- the transmitting / receiving antenna 130 can be composed of an antenna described based on the common recognition in the technical field according to the present disclosure, for example, an array antenna.
- the transmission / reception unit 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, and the like.
- the transmission / reception unit 120 may receive the above-mentioned uplink channel, uplink reference signal, and the like.
- the transmission / reception unit 120 may form at least one of a transmission beam and a reception beam by using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), and the like.
- digital beamforming for example, precoding
- analog beamforming for example, phase rotation
- the transmission / reception unit 120 processes, for example, Packet Data Convergence Protocol (PDCP) layer processing and Radio Link Control (RLC) layer processing (for example, RLC) for data, control information, etc. acquired from control unit 110.
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- MAC Medium Access Control
- HARQ retransmission control HARQ retransmission control
- the transmission / reception unit 120 performs channel coding (may include error correction coding), modulation, mapping, filtering, and discrete Fourier transform (Discrete Fourier Transform (DFT)) for the bit string to be transmitted. Processing (if necessary), inverse Fast Fourier Transform (IFFT) processing, precoding, transmission processing such as digital-analog transformation may be performed, and the baseband signal may be output.
- channel coding may include error correction coding
- modulation modulation
- mapping mapping, filtering
- DFT discrete Fourier Transform
- IFFT inverse Fast Fourier Transform
- precoding coding
- transmission processing such as digital-analog transformation
- the transmission / reception unit 120 may perform modulation, filtering, amplification, etc. on the baseband signal to the radio frequency band, and transmit the signal in the radio frequency band via the transmission / reception antenna 130. ..
- the transmission / reception unit 120 may perform amplification, filtering, demodulation to a baseband signal, or the like on the signal in the radio frequency band received by the transmission / reception antenna 130.
- the transmission / reception unit 120 (reception processing unit 1212) performs analog-digital conversion, fast Fourier transform (FFT) processing, and inverse discrete Fourier transform (IDFT) for the acquired baseband signal. )) Processing (if necessary), filtering, decoding, demodulation, decoding (may include error correction decoding), MAC layer processing, RLC layer processing, PDCP layer processing, and other reception processing are applied. User data and the like may be acquired.
- FFT fast Fourier transform
- IDFT inverse discrete Fourier transform
- the transmission / reception unit 120 may perform measurement on the received signal.
- the measurement unit 123 may perform Radio Resource Management (RRM) measurement, Channel State Information (CSI) measurement, or the like based on the received signal.
- the measuring unit 123 has received power (for example, Reference Signal Received Power (RSRP)) and reception quality (for example, Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)).
- RSRP Reference Signal Received Power
- RSSQ Reference Signal Received Quality
- SINR Signal to Noise Ratio
- Signal strength for example, Received Signal Strength Indicator (RSSI)
- propagation path information for example, CSI
- the measurement result may be output to the control unit 110.
- the transmission line interface 140 transmits / receives signals (backhaul signaling) to / from a device included in the core network 30, another base station 10, etc., and user data (user plane data) for the user terminal 20 and a control plane. Data or the like may be acquired or transmitted.
- the transmission unit and the reception unit of the base station 10 in the present disclosure may be composed of at least one of the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140.
- the transmission / reception unit 120 transmitted the upper layer parameter corresponding to the report regarding the maximum permissible exposure peculiar to the beam, and used the medium access control (MAC) control element (CE) transmitted based on the upper layer parameter. You may receive the report.
- MAC medium access control
- CE control element
- the control unit 110 may control the reception of the report using the medium access control (MAC) control element (CE) transmitted based on the upper layer parameter.
- MAC medium access control
- CE control element
- FIG. 7 is a diagram showing an example of the configuration of the user terminal according to the embodiment.
- the user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230.
- the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may each be provided with one or more.
- the functional block of the feature portion in the present embodiment is mainly shown, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each part described below may be omitted.
- the control unit 210 controls the entire user terminal 20.
- the control unit 210 can be composed of a controller, a control circuit, and the like described based on the common recognition in the technical field according to the present disclosure.
- the control unit 210 may control signal generation, mapping, and the like.
- the control unit 210 may control transmission / reception, measurement, and the like using the transmission / reception unit 220 and the transmission / reception antenna 230.
- the control unit 210 may generate data to be transmitted as a signal, control information, a sequence, and the like, and transfer the data to the transmission / reception unit 220.
- the transmission / reception unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223.
- the baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212.
- the transmitter / receiver 220 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitter / receiver circuit, and the like, which are described based on the common recognition in the technical field according to the present disclosure.
- the transmission / reception unit 220 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit.
- the transmission unit may be composed of a transmission processing unit 2211 and an RF unit 222.
- the receiving unit may be composed of a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.
- the transmitting / receiving antenna 230 can be composed of an antenna described based on the common recognition in the technical field according to the present disclosure, for example, an array antenna.
- the transmission / reception unit 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, and the like.
- the transmission / reception unit 220 may transmit the above-mentioned uplink channel, uplink reference signal, and the like.
- the transmission / reception unit 220 may form at least one of a transmission beam and a reception beam by using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), and the like.
- digital beamforming for example, precoding
- analog beamforming for example, phase rotation
- the transmission / reception unit 220 processes, for example, PDCP layer processing, RLC layer processing (for example, RLC retransmission control), and MAC layer processing (for example, for data, control information, etc. acquired from the control unit 210). , HARQ retransmission control), etc., to generate a bit string to be transmitted.
- the transmission / reception unit 220 (transmission processing unit 2211) performs channel coding (may include error correction coding), modulation, mapping, filtering processing, DFT processing (if necessary), and IFFT processing for the bit string to be transmitted. , Precoding, digital-to-analog conversion, and other transmission processing may be performed to output a baseband signal.
- Whether or not to apply the DFT process may be based on the transform precoding setting.
- the transmission / reception unit 220 transmits the channel using the DFT-s-OFDM waveform.
- the DFT process may be performed as the transmission process, and if not, the DFT process may not be performed as the transmission process.
- the transmission / reception unit 220 may perform modulation, filtering, amplification, etc. on the baseband signal to the radio frequency band, and transmit the signal in the radio frequency band via the transmission / reception antenna 230. ..
- the transmission / reception unit 220 may perform amplification, filtering, demodulation to a baseband signal, or the like on the signal in the radio frequency band received by the transmission / reception antenna 230.
- the transmission / reception unit 220 (reception processing unit 2212) performs analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering processing, demapping, demodulation, and decoding (error correction) for the acquired baseband signal. Decoding may be included), MAC layer processing, RLC layer processing, PDCP layer processing, and other reception processing may be applied to acquire user data and the like.
- the transmission / reception unit 220 may perform measurement on the received signal.
- the measuring unit 223 may perform RRM measurement, CSI measurement, or the like based on the received signal.
- the measuring unit 223 may measure received power (for example, RSRP), reception quality (for example, RSRQ, SINR, SNR), signal strength (for example, RSSI), propagation path information (for example, CSI), and the like.
- the measurement result may be output to the control unit 210.
- the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmission / reception unit 220 and the transmission / reception antenna 230.
- the transmission / reception unit 220 receives the upper layer parameter corresponding to the report on the maximum permissible exposure peculiar to the beam, and based on the upper layer parameter, uses the medium access control (MAC) control element (CE) to make the report. You may send it.
- MAC medium access control
- CE control element
- the upper layer parameter may include at least one of a parameter indicating whether to send the report, a timer executed when the report is triggered, and a threshold value corresponding to the power management maximum power reduction of the beam.
- the upper layer parameter may be set for each terminal, each cell group, each serving cell, or each bandwidth portion.
- the control unit 210 may control the transmission of the report using the medium access control (MAC) control element (CE) based on the upper layer parameter.
- the control unit 210 may control the transmission of both the beam-specific maximum permissible exposure report and the terminal-specific maximum permissible exposure report.
- MAC medium access control
- CE control element
- each functional block is realized using one physically or logically coupled device, or two or more physically or logically separated devices can be directly or indirectly (eg, for example). , Wired, wireless, etc.) and may be realized using these plurality of devices.
- the functional block may be realized by combining the software with the one device or the plurality of devices.
- the functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and deemed. , Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc.
- a functional block (configuration unit) for functioning transmission may be referred to as a transmitting unit (transmitting unit), a transmitter (transmitter), or the like.
- the realization method is not particularly limited.
- the base station, user terminal, and the like in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure.
- FIG. 8 is a diagram showing an example of the hardware configuration of the base station and the user terminal according to the embodiment.
- the base station 10 and the user terminal 20 described above may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. ..
- the hardware configuration of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the devices.
- processor 1001 may be a plurality of processors. Further, the processing may be executed by one processor, or the processing may be executed simultaneously, sequentially, or by using other methods by two or more processors.
- the processor 1001 may be mounted by one or more chips.
- the processor 1001 For each function in the base station 10 and the user terminal 20, for example, by loading predetermined software (program) on hardware such as the processor 1001 and the memory 1002, the processor 1001 performs an operation and communicates via the communication device 1004. It is realized by controlling at least one of reading and writing of data in the memory 1002 and the storage 1003.
- predetermined software program
- the processor 1001 operates, for example, an operating system to control the entire computer.
- the processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, and the like.
- CPU central processing unit
- control unit 110 210
- transmission / reception unit 120 220
- the like may be realized by the processor 1001.
- the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these.
- a program program code
- the control unit 110 may be realized by a control program stored in the memory 1002 and operating in the processor 1001, and may be realized in the same manner for other functional blocks.
- the memory 1002 is a computer-readable recording medium, for example, at least a Read Only Memory (ROM), an Erasable Programmable ROM (EPROM), an Electrically EPROM (EEPROM), a Random Access Memory (RAM), or any other suitable storage medium. It may be composed of one.
- the memory 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like.
- the memory 1002 can store a program (program code), a software module, or the like that can be executed to implement the wireless communication method according to the embodiment of the present disclosure.
- the storage 1003 is a computer-readable recording medium, and is, for example, a flexible disk, a floppy disk (registered trademark) disk, an optical magnetic disk (for example, a compact disk (Compact Disc ROM (CD-ROM), etc.), a digital versatile disk, etc.). At least one of Blu-ray® discs), removable discs, optical disc drives, smart cards, flash memory devices (eg cards, sticks, key drives), magnetic stripes, databases, servers and other suitable storage media. May be configured by.
- the storage 1003 may be referred to as an auxiliary storage device.
- the communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.
- the communication device 1004 has, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)). May be configured to include.
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- the transmission / reception unit 120 (220), the transmission / reception antenna 130 (230), and the like described above may be realized by the communication device 1004.
- the transmission / reception unit 120 (220) may be physically or logically separated by the transmission unit 120a (220a) and the reception unit 120b (220b).
- the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts an input from the outside.
- the output device 1006 is an output device (for example, a display, a speaker, a Light Emitting Diode (LED) lamp, etc.) that outputs to the outside.
- the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
- each device such as the processor 1001 and the memory 1002 is connected by the bus 1007 for communicating information.
- the bus 1007 may be configured by using a single bus, or may be configured by using a different bus for each device.
- the base station 10 and the user terminal 20 include a microprocessor, a digital signal processor (Digital Signal Processor (DSP)), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), and the like. It may be configured to include hardware, and a part or all of each functional block may be realized by using the hardware. For example, processor 1001 may be implemented using at least one of these hardware.
- DSP Digital Signal Processor
- ASIC Application Specific Integrated Circuit
- PLD Programmable Logic Device
- FPGA Field Programmable Gate Array
- the terms described in the present disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings.
- channels, symbols and signals may be read interchangeably.
- the signal may be a message.
- the reference signal may be abbreviated as RS, and may be referred to as a pilot, a pilot signal, or the like depending on the applied standard.
- the component carrier CC may be referred to as a cell, a frequency carrier, a carrier frequency, or the like.
- the wireless frame may be configured by one or more periods (frames) in the time domain.
- Each of the one or more periods (frames) constituting the radio frame may be referred to as a subframe.
- the subframe may be composed of one or more slots in the time domain.
- the subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
- the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel.
- Numerology includes, for example, subcarrier spacing (SubCarrier Spacing (SCS)), bandwidth, symbol length, cyclic prefix length, transmission time interval (Transmission Time Interval (TTI)), number of symbols per TTI, and wireless frame configuration.
- SCS subcarrier Spacing
- TTI Transmission Time Interval
- a specific filtering process performed by the transmitter / receiver in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like may be indicated.
- the slot may be composed of one or more symbols in the time area (Orthogonal Frequency Division Multiplexing (OFDM) symbol, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.). Further, the slot may be a time unit based on numerology.
- OFDM Orthogonal Frequency Division Multiplexing
- SC-FDMA Single Carrier Frequency Division Multiple Access
- the slot may include a plurality of mini slots.
- Each minislot may be composed of one or more symbols in the time domain. Further, the mini-slot may be referred to as a sub-slot.
- a minislot may consist of a smaller number of symbols than the slot.
- a PDSCH (or PUSCH) transmitted in a time unit larger than the mini slot may be referred to as a PDSCH (PUSCH) mapping type A.
- the PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (PUSCH) mapping type B.
- the wireless frame, subframe, slot, minislot and symbol all represent the time unit when transmitting a signal.
- the radio frame, subframe, slot, minislot and symbol may use different names corresponding to each.
- the time units such as frames, subframes, slots, mini slots, and symbols in the present disclosure may be read as each other.
- one subframe may be called TTI
- a plurality of consecutive subframes may be called TTI
- one slot or one minislot may be called TTI. That is, at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms. May be.
- the unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.
- TTI refers to, for example, the minimum time unit of scheduling in wireless communication.
- the base station schedules each user terminal to allocate radio resources (frequency bandwidth that can be used in each user terminal, transmission power, etc.) in TTI units.
- the definition of TTI is not limited to this.
- TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation.
- the time interval for example, the number of symbols
- the transport block, code block, code word, etc. may be shorter than the TTI.
- one or more TTIs may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
- a TTI having a time length of 1 ms may be referred to as a normal TTI (TTI in 3GPP Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like.
- TTI shorter than normal TTI may be referred to as shortened TTI, short TTI, partial TTI (partial or fractional TTI), shortened subframe, short subframe, minislot, subslot, slot and the like.
- the long TTI (eg, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms
- the short TTI eg, shortened TTI, etc.
- TTI having the above TTI length may be read as TTI having the above TTI length.
- a resource block is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain.
- the number of subcarriers contained in the RB may be the same regardless of the numerology, and may be, for example, 12.
- the number of subcarriers contained in the RB may be determined based on numerology.
- the RB may include one or more symbols in the time domain, and may have a length of 1 slot, 1 mini slot, 1 subframe or 1 TTI.
- Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.
- one or more RBs are a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, and an RB. It may be called a pair or the like.
- PRB Physical RB
- SCG sub-carrier Group
- REG resource element group
- PRB pair an RB. It may be called a pair or the like.
- the resource block may be composed of one or a plurality of resource elements (Resource Element (RE)).
- RE Resource Element
- 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
- Bandwidth Part (which may also be called partial bandwidth) represents a subset of consecutive common resource blocks (RBs) for a neurology in a carrier. May be good.
- the common RB may be specified by the index of the RB with respect to the common reference point of the carrier.
- PRBs may be defined in a BWP and numbered within that BWP.
- the BWP may include UL BWP (BWP for UL) and DL BWP (BWP for DL).
- BWP UL BWP
- BWP for DL DL BWP
- One or more BWPs may be set in one carrier for the UE.
- At least one of the configured BWPs may be active and the UE may not expect to send or receive a given signal / channel outside the active BWP.
- “cell”, “carrier” and the like in this disclosure may be read as “BWP”.
- the above-mentioned structures such as wireless frames, subframes, slots, mini slots, and symbols are merely examples.
- the number of subframes contained in a radio frame the number of slots per subframe or radioframe, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in the RB.
- the number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and the like can be changed in various ways.
- the information, parameters, etc. described in the present disclosure may be expressed using an absolute value, a relative value from a predetermined value, or another corresponding information. It may be represented.
- the radio resource may be indicated by a predetermined index.
- the information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques.
- data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.
- information, signals, etc. can be output from the upper layer to the lower layer and from the lower layer to at least one of the upper layers.
- Information, signals, etc. may be input / output via a plurality of network nodes.
- Input / output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input / output information, signals, etc. can be overwritten, updated, or added. The output information, signals, etc. may be deleted. The input information, signals, etc. may be transmitted to other devices.
- the notification of information is not limited to the embodiment / embodiment described in the present disclosure, and may be performed by using another method.
- the notification of information in the present disclosure includes physical layer signaling (for example, downlink control information (DCI)), uplink control information (Uplink Control Information (UCI))), and higher layer signaling (for example, Radio Resource Control). (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals or combinations thereof. May be carried out by.
- DCI downlink control information
- UCI Uplink Control Information
- RRC Radio Resource Control
- MIB Master Information Block
- SIB System Information Block
- MAC Medium Access Control
- the physical layer signaling may be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), and the like.
- the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.
- MAC signaling may be notified using, for example, a MAC control element (MAC Control Element (CE)).
- CE MAC Control Element
- the notification of predetermined information is not limited to the explicit notification, but implicitly (for example, by not notifying the predetermined information or another information). May be done (by notification of).
- the determination may be made by a value represented by 1 bit (0 or 1), or by a boolean value represented by true or false. , May be done by numerical comparison (eg, comparison with a given value).
- software, instructions, information, etc. may be transmitted and received via a transmission medium.
- the software uses at least one of wired technology (coaxial cable, optical fiber cable, twist pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.) on the website.
- wired technology coaxial cable, optical fiber cable, twist pair, digital subscriber line (DSL), etc.
- wireless technology infrared, microwave, etc.
- the terms “system” and “network” used in this disclosure may be used interchangeably.
- the “network” may mean a device (eg, a base station) included in the network.
- precoding "precoding weight”
- QCL Quality of Co-Co-Location
- TCI state Transmission Configuration Indication state
- space "Spatial relation”, “spatial domain filter”, “transmission power”, “phase rotation”, "antenna port”, “antenna port group”, “layer”, “number of layers”
- Terms such as “rank”, “resource”, “resource set”, “resource group”, “beam”, “beam width”, “beam angle”, "antenna”, “antenna element", “panel” are compatible.
- base station BS
- wireless base station fixed station
- NodeB NodeB
- eNB eNodeB
- gNB gNodeB
- Access point "Transmission point (Transmission Point (TP))
- Reception point Reception Point
- TRP Transmission / Reception Point
- Panel , "Cell”, “sector”, “cell group”, “carrier”, “component carrier” and the like
- Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
- the base station can accommodate one or more (eg, 3) cells.
- a base station accommodates multiple cells, the entire base station coverage area can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (Remote Radio). Communication services can also be provided by Head (RRH))).
- RRH Head
- the term "cell” or “sector” refers to part or all of the coverage area of at least one of a base station and a base station subsystem that provides communication services in this coverage.
- MS mobile station
- UE user equipment
- terminal terminal
- Mobile stations include subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless terminals, remote terminals. , Handset, user agent, mobile client, client or some other suitable term.
- At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, or the like.
- At least one of the base station and the mobile station may be a device mounted on the mobile body, a mobile body itself, or the like.
- the moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be.
- at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation.
- at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.
- IoT Internet of Things
- the base station in the present disclosure may be read by the user terminal.
- communication between a base station and a user terminal has been replaced with communication between a plurality of user terminals (for example, it may be referred to as Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.).
- D2D Device-to-Device
- V2X Vehicle-to-Everything
- Each aspect / embodiment of the present disclosure may be applied to the configuration.
- the user terminal 20 may have the function of the base station 10 described above.
- words such as "uplink” and "downlink” may be read as words corresponding to communication between terminals (for example, "sidelink”).
- the uplink channel, the downlink channel, and the like may be read as the side link channel.
- the user terminal in the present disclosure may be read as a base station.
- the base station 10 may have the functions of the user terminal 20 described above.
- the operation performed by the base station may be performed by its upper node (upper node) in some cases.
- various operations performed for communication with a terminal are a base station, one or more network nodes other than the base station (for example,).
- Mobility Management Entity (MME), Serving-Gateway (S-GW), etc. can be considered, but it is not limited to these), or it is clear that it can be performed by a combination thereof.
- Each aspect / embodiment described in the present disclosure may be used alone, in combination, or may be switched and used according to the execution. Further, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present disclosure may be changed as long as there is no contradiction. For example, the methods described in the present disclosure present elements of various steps using exemplary order, and are not limited to the particular order presented.
- LTE Long Term Evolution
- LTE-A LTE-Advanced
- SUPER 3G IMT-Advanced
- 4G 4th generation mobile communication system
- 5G 5th generation mobile communication system
- 6G 6th generation mobile communication system
- xG xG (xG (x is, for example, integer, fraction)
- Future Radio Access FAA
- RAT New -Radio Access Technology
- NR New Radio
- NX New radio access
- FX Future generation radio access
- GSM registered trademark
- CDMA2000 Code Division Multiple Access
- UMB Ultra Mobile Broadband
- LTE 802.11 Wi-Fi®
- LTE 802.16 WiMAX®
- LTE 802.20 Ultra-WideBand (UWB), Bluetooth®, and other suitable radios. It may be applied to a system using a communication method, a next-generation system extended based on these, and the like.
- UMB Ultra-WideBand
- references to elements using designations such as “first” and “second” as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted or that the first element must somehow precede the second element.
- determining used in this disclosure may include a wide variety of actions.
- judgment (decision) means judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry) ( For example, searching in a table, database or another data structure), ascertaining, etc. may be considered to be "judgment”.
- judgment (decision) includes receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access (for example). It may be regarded as “determining” such as accessing) (for example, accessing data in memory).
- judgment (decision) is regarded as “judgment (decision)” of solving, selecting, selecting, establishing, comparing, and the like. May be good. That is, “judgment (decision)” may be regarded as “judgment (decision)” of some action.
- the "maximum transmission power" described in the present disclosure may mean the maximum value of the transmission power, may mean the nominal UE maximum transmit power, or may mean the rated maximum transmission power (the). It may mean rated UE maximum transmit power).
- connection are any direct or indirect connections or connections between two or more elements. Means, and can include the presence of one or more intermediate elements between two elements that are “connected” or “bonded” to each other.
- the connection or connection between the elements may be physical, logical, or a combination thereof. For example, "connection” may be read as "access”.
- the radio frequency region when two elements are connected, one or more wires, cables, printed electrical connections, etc. are used, and as some non-limiting and non-comprehensive examples, the radio frequency region, microwaves. It can be considered to be “connected” or “coupled” to each other using electromagnetic energy having wavelengths in the region, light (both visible and invisible) regions, and the like.
- the term "A and B are different” may mean “A and B are different from each other”.
- the term may mean that "A and B are different from C”.
- Terms such as “separate” and “combined” may be interpreted in the same way as “different”.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
NRにおいては、最大許容曝露(Maximum Permitted Exposure(MPE))(又は電磁的電力密度曝露(electromagnetic power density exposure))の問題についての対応が検討されている。UEは、健康と安全のために人体への最大放射に関するFederal Communication Commission(FCC)の規制を満たすことが要求される。例えば、Rel.15 NRにおいては、曝露(explosure)を制限するための規定として以下の2つの制限方法が規定されている。
制限方法1として、電力管理最大電力低減(Power-management Maximum Power Reduction(P-MPR)、最大許容UE出力電力低減)を用いた制限が規定されている。例えば、UE最大出力電力PCMAX,f,cは、対応するPUMAX,f,c(測定される最大出力電力、測定される設定最大UE出力電力)が以下の式(1)を満たすように、設定される。
PPowerclass-MAX(MAX(MPRf,c,A-MPRf,c)+ΔMBP,n,P-MPRf,c)-MAX{T(MAX(MPRf,c,A-MPRf,c,)),T(P-MPRf,c)}≦PUMAX,f,c≦EIRPmax (1)
3GPP Rel.15 NRにおいては、ミリ波人体防護指針を満たすために、UEがP-MPRの適用を必要としないで送信できる上りリンク送信比率(transmission rate)を通知するUE能力情報(capability information)が導入された。当該能力情報は、Frequency Range 2(FR2)における最大上りリンクデューティ比(maxUplinkDutyCycle-FR2)と呼ばれてもよい。
複数パネル(マルチパネル)を装備するUEに対し、ULパネルの高速な選択のために、ULビーム指示に基づいて、MPEに起因するULカバレッジ損失を考慮してUL送信ビーム選択を促すことが検討されている。
・MPEを考慮して必要とされるP-MPRf,cがP-MPR閾値よりも大きい。
・MPEを考慮して計算されたPCMAX,f,c(サービングセルcのキャリアfに対してUEに設定される最大出力電力)がPCMAX閾値よりも小さい。
・MPEを考慮して計算されたPower Headroom(PH)値(例えば、実PH、仮想PH)がPH閾値よりも小さい。
MPE問題発生と、1以上のセル及びBWPに対するMPE要件を満たすビーム/パネル(MPE適合ビーム/パネル)に関する情報と、の少なくとも1つの報告のための、新規のlogical channel ID(LCID)を有する新規メディアアクセス制御制御要素(Medium Access Control Control Element:MAC CE)が定義されてもよい。新規MAC CEは、新UL送信ビーム/パネルと、MPE問題が発生したセルと、の少なくとも1つを示してもよい。新規MAC CEは、次の内容1~8の少なくとも1つを含んでもよい。
セル/BWP毎に、MPE問題を示すための0又は1ビットのフィールド。MAC CEは、1以上のセル/BWPに対するフィールドを含まれてもよい。MAC CEは、セル/BWPインデックスを含んでもよい。
MPE問題が検出された1つのセル/BWPに対し、1以上の又はN個までの、MPE適合ビーム/パネルのインデックス。
MPE問題が検出された複数のセル/BWPに対するMPE適合ビーム/パネルのインデックス。MAC CEは、当該複数のセル/BWPのそれぞれに対し、1以上の又はN個までの、MPE適合ビーム/パネルのインデックスを含んでもよい。
内容1、2、3の少なくとも1つに加え、各ビーム/パネルのインデックスに対し、必要とされるP-MPR。
内容1、2、3の少なくとも1つに加え、各ビーム/パネルのインデックスに対し、P-MPRを考慮して推定される残りの電力(MPEを考慮して推定される残りの電力)。推定される残りの電力は、MPEを考慮して実際の送信又は参照フォーマット(仮想送信)に基づくPH値であってもよいし、ビーム毎にMPEを考慮したPower Headroom Reporting(PHR)であってもよい。PHRは、PHR MAC CE内の内容(PHタイプ、PH値、PCMAX,f,cの少なくとも1つ)を含んでもよい。
内容1、2、3の少なくとも1つに加え、各ビーム/パネルのインデックスに対し、計算されるPCMAX,f,c。
内容1~6の2以上の組み合わせ。
内容7に基づき、セル/BWPに対してMPE適合ビーム/パネルが発見されないことを示すフィールド(ビット)。
3GPP Rel.16では、PHRを制御するためのRRCパラメータとして、mpe-Reporting、mpe-ProhibitTimer、mpe-Thresholdが定義されている。mpe-Reportingは、PHR MAC CEにおいて、UEがMPE P-MPRを報告するかを示す。mpe-ProhibitTimerは、MPE P-MPR報告がトリガされた場合に開始されるタイマであり、サブフレーム数を示す。mpe-Thresholdは、FR2が設定された場合の、MPE P-MPR報告のためのP-MPR閾値[dB]を示す。
UEは、ビーム固有(beam specific)の最大許容曝露(MPE)に関する報告(MPE報告)に対応する上位レイヤパラメータ(RRCパラメータ)を受信し、当該上位レイヤパラメータに基づいて、MAC CE(PHR MAC CE)を用いた当該報告の送信を制御する。以下、ビーム固有のMPE報告に対応するRRCパラメータの名称を"new-mpe-Reporting"、"new-mpe-ProhibitTimer"、"new-mpe-Threshold"とするが、他の名称が用いられてもよい。
ビーム固有のMPE報告を送信するかを示すRRCパラメータnew-mpe-Reportingが定義されてもよい。UEは、new-mpe-Reportingが設定された場合、MPE要件を満たすためのビーム固有のP-MPR測定を行い、ビーム固有のMPE報告をトリガする。
ビーム固有のRRCパラメータの設定態様、及びUE固有のMPE報告とビーム固有のMPE報告との関係について説明する。例えば、ビーム固有のRRCパラメータは、UE(端末)毎、セルグループ毎、サービングセル毎、又は帯域幅部分(Bandwidth Part:BWP)毎に設定されてもよい。本実施形態の各態様におけるビーム固有のRRCパラメータは、第1の実施形態で示したnew-mpe-Reporting、new-mpe-ProhibitTimer、new-mpe-Thresholdの少なくとも1つであってもよい。
ビーム固有のRRCパラメータは、UE毎に設定され、全てのFR2サービングセルに適用されてもよい。
ビーム固有のRRCパラメータは、UEのセルグループ(Master cell group(MCG)/Secondary cell group(SCG)/PUCCHセルグループ)毎に設定され、設定されたセルグループ内の全てのサービングセルに適用されてもよい。
ビーム固有のRRCパラメータは、UEのサービングセル毎に設定され、異なるサービングセルには、異なるパラメータが設定されてもよい。
ビーム固有のRRCパラメータは、UEのサービングセル内のBWP毎に設定され、異なるBWPには、異なるパラメータが設定されてもよい。
UEは、UE固有のMPE報告とビーム固有のMPE報告とのうちのいずれか1つが設定されていてもよい。UEは、ビーム固有のMPE報告が設定された場合、UE固有のMPE報告が設定されることを想定しなくてもよい。UEは、UE固有のMPE報告が設定された場合、ビーム固有のMPE報告が設定されることを想定しなくてもよい。
UEは、UE固有のMPE報告とビーム固有のMPE報告との両方が設定され、両方の報告を送信してもよい。UEは、異なるセル/セルグループ/BWPに対して異なるMPE報告が設定されてもよい。態様2-2が適用される場合、異なるセルグループに対して異なるMPE報告(UE固有又はビーム固有)が設定されてもよい。態様2-3が適用される場合、異なるセル(サービングセル)に対して異なるMPE報告(UE固有又はビーム固有)が設定されてもよい。態様2-4が適用される場合、異なるBWPに対して異なるMPE報告(UE固有又はビーム固有)が設定されてもよい。
UEは、UE固有のMPE報告とビーム固有のMPE報告との両方が設定され、両方の報告を送信してもよい。UEは、異なるセル/セルグループ/BWPに対して同じMPE報告が設定されてもよい。UEは、PHR又はP-MPR報告がトリガされた場合、UEの実装又は所定のルール(仕様)に基づいて、UE固有のMPE報告及びビーム固有のMPE報告の少なくとも一方を決定(選択)してもよい。UEは、UE固有のMPE報告及びビーム固有のMPE報告の両方が設定された場合、ビーム固有のMPE報告を適用してもよい。
UEは、態様A/B/Cにおいて、UE固有のMPE報告及びビーム固有のMPE報告のどちらを適用するかについて、追加の設定に基づくさらなる条件が用いられてもよい。
(1)PHRがトリガされた。
(2)ビーム固有のMPE報告がトリガされない。
MPE問題の検出のメトリックまたは閾値(mpe-Threshold/new-mpe-Threshold)が異なることにより、UE固有のMPE報告(mpe-Reporting)とビーム固有のMPE報告(new-mpe-Reporting)のトリガ条件(MPE問題の検出条件)が異なるケースにおいて、UEは、次の手順に従ってもよい。
ビーム固有のMPE報告のために、図1~図3に示した、Rel.16におけるシングルエントリ又はマルチエントリのPHR MAC CEと同じオクテット(8ビットのフィールド)のセットが用いられてもよい。例えば、PHR MAC CEの各セット(エントリ)が、サービングセルにおけるビーム/パネルに対応していてもよい。
サービングセルに対してビーム固有のMPE報告がトリガされた場合、サービングセルの全てのビームの情報が特定の順序で報告されてもよい。MAC CEのサイズは、サービングセル/セルグループ/FR/UEにおける最大のパネル数(最大のULパネル数)に関連していてもよい。この場合、ビームID/パネルIDは、MAC CE内のエントリの順序によって判断されるため、UEは、ビームID/パネルIDを報告しなくてもよい。
サービングセルに対してビーム固有のMPE P-MPRレポートがトリガされた場合、1つのビーム/パネル情報のみが報告されてもよいし、仕様で定められた条件に基づいて、複数の(一部の)ビーム/パネルについてのMPE報告が行われてもよい。この場合、MAC CEのサイズは、可変である。
MPE要件を満たすために適用されて測定された、ビームのP-MPRが、対応するビームのnew-mpe-Threshold以上である場合に、そのビームのみについてMPE報告を送信してもよい。
new-mpe-Threshold以上のP-MPRに対応する1つ又は複数のビームとともに、UEは、少なくとも1つのMPEセーフビーム(もし、存在する場合)を報告してもよい。MPEセーフビームは、例えば、new-mpe-Threshold未満のP-MPRに対応する1つ又は複数のビームである。
UEは、UE毎/セルグループ毎/サービングセル毎のビーム固有のMPE報告をサポートするかを示すUE能力を送信(報告)してもよい。UEは、UE毎/セルグループ毎/サービングセル毎のビーム固有のnew-mpe-ProhibitTimerをサポートするかを示すUE能力を送信(報告)してもよい。UEは、UE毎/セルグループ毎/サービングセル毎のビーム固有のnew-mpe-Thresholdをサポートするかを示すUE能力を送信(報告)してもよい。
以下、本開示の一実施形態に係る無線通信システムの構成について説明する。この無線通信システムでは、本開示の上記各実施形態に係る無線通信方法のいずれか又はこれらの組み合わせを用いて通信が行われる。
図6は、一実施形態に係る基地局の構成の一例を示す図である。基地局10は、制御部110、送受信部120、送受信アンテナ130及び伝送路インターフェース(transmission line interface)140を備えている。なお、制御部110、送受信部120及び送受信アンテナ130及び伝送路インターフェース140は、それぞれ1つ以上が備えられてもよい。
図7は、一実施形態に係るユーザ端末の構成の一例を示す図である。ユーザ端末20は、制御部210、送受信部220及び送受信アンテナ230を備えている。なお、制御部210、送受信部220及び送受信アンテナ230は、それぞれ1つ以上が備えられてもよい。
なお、上記実施形態の説明に用いたブロック図は、機能単位のブロックを示している。これらの機能ブロック(構成部)は、ハードウェア及びソフトウェアの少なくとも一方の任意の組み合わせによって実現される。また、各機能ブロックの実現方法は特に限定されない。すなわち、各機能ブロックは、物理的又は論理的に結合した1つの装置を用いて実現されてもよいし、物理的又は論理的に分離した2つ以上の装置を直接的又は間接的に(例えば、有線、無線などを用いて)接続し、これら複数の装置を用いて実現されてもよい。機能ブロックは、上記1つの装置又は上記複数の装置にソフトウェアを組み合わせて実現されてもよい。
なお、本開示において説明した用語及び本開示の理解に必要な用語については、同一の又は類似する意味を有する用語と置き換えてもよい。例えば、チャネル、シンボル及び信号(シグナル又はシグナリング)は、互いに読み替えられてもよい。また、信号はメッセージであってもよい。参照信号(reference signal)は、RSと略称することもでき、適用される標準によってパイロット(Pilot)、パイロット信号などと呼ばれてもよい。また、コンポーネントキャリア(Component Carrier(CC))は、セル、周波数キャリア、キャリア周波数などと呼ばれてもよい。
Claims (6)
- ビーム固有の最大許容曝露に関する報告に対応する上位レイヤパラメータを受信する受信部と、
前記上位レイヤパラメータに基づいて、medium access control(MAC) control element(CE)を用いた前記報告の送信を制御する制御部と、
を有する端末。 - 前記上位レイヤパラメータは、前記報告を送信するかを示すパラメータ、前記報告がトリガされた場合に実行されるタイマ、前記ビームの電力管理最大電力低減に対応する閾値の少なくとも1つを含む、
請求項1に記載の端末。 - 前記上位レイヤパラメータは、端末毎、セルグループ毎、サービングセル毎、又は帯域幅部分毎に設定される
請求項1又は請求項2に記載の端末。 - 前記制御部は、前記ビーム固有の最大許容曝露に関する報告、及び端末固有の最大許容曝露に関する報告の両方の送信を制御する、
請求項1から請求項3のいずれかに記載の端末。 - ビーム固有の最大許容曝露に関する報告に対応する上位レイヤパラメータを受信する工程と、
前記上位レイヤパラメータに基づいて、medium access control(MAC) control element(CE)を用いた前記報告の送信を制御する工程と、
を有する端末の無線通信方法。 - ビーム固有の最大許容曝露に関する報告に対応する上位レイヤパラメータを送信する送信部と、
前記上位レイヤパラメータに基づいて送信された、medium access control(MAC) control element(CE)を用いた前記報告の受信を制御する制御部と、
を有する基地局。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2022568018A JPWO2022123778A5 (ja) | 2020-12-11 | 端末、無線通信方法、基地局及びシステム | |
PCT/JP2020/046319 WO2022123778A1 (ja) | 2020-12-11 | 2020-12-11 | 端末、無線通信方法及び基地局 |
CN202080108339.7A CN116724582A (zh) | 2020-12-11 | 2020-12-11 | 终端、无线通信方法以及基站 |
US18/256,297 US20240040520A1 (en) | 2020-12-11 | 2020-12-11 | Terminal, radio communication method, and base station |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2020/046319 WO2022123778A1 (ja) | 2020-12-11 | 2020-12-11 | 端末、無線通信方法及び基地局 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022123778A1 true WO2022123778A1 (ja) | 2022-06-16 |
Family
ID=81974285
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2020/046319 WO2022123778A1 (ja) | 2020-12-11 | 2020-12-11 | 端末、無線通信方法及び基地局 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20240040520A1 (ja) |
CN (1) | CN116724582A (ja) |
WO (1) | WO2022123778A1 (ja) |
-
2020
- 2020-12-11 WO PCT/JP2020/046319 patent/WO2022123778A1/ja active Application Filing
- 2020-12-11 US US18/256,297 patent/US20240040520A1/en active Pending
- 2020-12-11 CN CN202080108339.7A patent/CN116724582A/zh active Pending
Non-Patent Citations (2)
Title |
---|
INTERDIGITAL: "Addition of MPE reporting to TS 38.321", 3GPP DRAFT; R2-2007651, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. 20200817 - 20200828, 7 August 2020 (2020-08-07), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051912295 * |
QUALCOMM INCORPORATED: "Enhancements on Multi-beam Operation", 3GPP DRAFT; R1-2009250, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-meeting ;20201026 - 20201113, 24 October 2020 (2020-10-24), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051946913 * |
Also Published As
Publication number | Publication date |
---|---|
CN116724582A (zh) | 2023-09-08 |
US20240040520A1 (en) | 2024-02-01 |
JPWO2022123778A1 (ja) | 2022-06-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2022070344A1 (ja) | 端末、無線通信方法及び基地局 | |
JPWO2020170444A1 (ja) | ユーザ端末及び無線通信方法 | |
WO2020255263A1 (ja) | 端末及び無線通信方法 | |
WO2022079860A1 (ja) | 端末、無線通信方法及び基地局 | |
WO2022070346A1 (ja) | 端末、無線通信方法及び基地局 | |
JPWO2020144824A1 (ja) | ユーザ端末及び無線通信方法 | |
WO2022079902A1 (ja) | 端末、無線通信方法及び基地局 | |
WO2022079903A1 (ja) | 端末、無線通信方法及び基地局 | |
WO2021149260A1 (ja) | 端末、無線通信方法及び基地局 | |
WO2021149259A1 (ja) | 端末、無線通信方法及び基地局 | |
WO2022102605A1 (ja) | 端末、無線通信方法及び基地局 | |
WO2022070345A1 (ja) | 端末、無線通信方法及び基地局 | |
WO2022070411A1 (ja) | 端末、無線通信方法及び基地局 | |
WO2022024301A1 (ja) | 端末、無線通信方法及び基地局 | |
WO2022024377A1 (ja) | 端末、無線通信方法及び基地局 | |
WO2021100099A1 (ja) | 端末及び無線通信方法 | |
WO2021205668A1 (ja) | 端末、無線通信方法及び基地局 | |
WO2022009417A1 (ja) | 端末、無線通信方法及び基地局 | |
WO2022030003A1 (ja) | 端末、無線通信方法及び基地局 | |
WO2022038657A1 (ja) | 端末、無線通信方法及び基地局 | |
JP7431179B2 (ja) | 端末、無線通信方法及びシステム | |
WO2021229819A1 (ja) | 端末、無線通信方法及び基地局 | |
WO2022123778A1 (ja) | 端末、無線通信方法及び基地局 | |
WO2022009427A1 (ja) | 端末、無線通信方法及び基地局 | |
WO2022054224A1 (ja) | 端末、無線通信方法及び基地局 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20965160 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2022568018 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18256297 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202080108339.7 Country of ref document: CN |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 20965160 Country of ref document: EP Kind code of ref document: A1 |