WO2022102256A1 - 基地局及びユーザ機器 - Google Patents
基地局及びユーザ機器 Download PDFInfo
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- WO2022102256A1 WO2022102256A1 PCT/JP2021/034909 JP2021034909W WO2022102256A1 WO 2022102256 A1 WO2022102256 A1 WO 2022102256A1 JP 2021034909 W JP2021034909 W JP 2021034909W WO 2022102256 A1 WO2022102256 A1 WO 2022102256A1
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- base station
- mib
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- 238000012545 processing Methods 0.000 claims abstract description 86
- 238000004891 communication Methods 0.000 claims abstract description 60
- 238000000034 method Methods 0.000 description 26
- 101150096310 SIB1 gene Proteins 0.000 description 17
- 230000008569 process Effects 0.000 description 15
- 230000004048 modification Effects 0.000 description 10
- 238000012986 modification Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 5
- 230000009467 reduction Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 108700010388 MIBs Proteins 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0092—Indication of how the channel is divided
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
Definitions
- This disclosure relates to base stations and user equipment.
- the base station notifies the system information (System Information), and the user device (User Equipment: UE) receives the system information.
- the system information includes a master information block (Master Information: MIB), a system information block 1 (System Information Block 1: SIB1), and other SIBs.
- Non-Patent Document 2 UEs having reduced capabilities are being studied. For example, reduction of UE complexity such as reduction of the number of antennas and reduction of bandwidth has begun to be studied.
- 3GPP TS 38.331 V16.2.0 (2020-09) "3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Radio Resource Control (RRC) protocol specification (Release 16)" 3GPP TSG RAN Meeting # 89e, Electronic Meeting, September 14-18, 2020, RP-201677, Ericsson, "Revised SID on Study on support of reduced capability NR devices"
- the MIB includes a controlResourceSetZero that determines the control resource set (Core Resource Set: CORESET) # 0.
- the controlResorceSetZero determines the bandwidth of CORESET # 0.
- the bandwidth of CORESET # 0 is a UE having a narrow bandwidth as described in Non-Patent Document 2. Was found to be unsuitable.
- An object of the present disclosure is to provide a base station and a user device that enable the use of a control resource set having a bandwidth suitable for the user device.
- the base station includes an information acquisition unit that acquires a master information block (MIB) and a communication processing unit that transmits the MIB.
- MIB contains one bit of information about the bandwidth of a control resource set (CORESET) for a user device with limited bandwidth capabilities.
- CORESET control resource set
- a user device receives a master information block (MIB) containing 1-bit information about the bandwidth of a control resource set (CORESET) for a user device having a limited bandwidth capability. It includes a processing unit and an information acquisition unit that acquires the 1-bit information included in the MIB.
- MIB master information block
- CORESET control resource set
- the base station includes an information acquisition unit for acquiring an RRC (Radio Resource Control) Reconnection message for handover of a user device from a source cell to a target cell, and the RRC Reconnection message to the user device.
- a communication processing unit for transmitting is provided.
- the RRC Reconnection message relates to a first CORESET information regarding a first control resource set (CORESET) in the target cell and a second CORESET for a user device having a limited bandwidth capability in the target cell. Includes a second CORESET information.
- CORESET control resource set
- the user device includes a communication processing unit that receives an RRC Reconfiguration message for handover of the user device from the source cell to the target cell from the base station, and the RRC Configuration message is the target. Includes a first CORESET information about a first control resource set (CORESET) in a cell and a second CORESET information about a second CORESET for a user device with limited bandwidth capabilities in the target cell. , The information acquisition unit for acquiring the first CORESET information or the second CORESET information.
- CORESET control resource set
- control resource set having a bandwidth suitable for the user equipment. It should be noted that, according to the present disclosure, other effects may be produced in place of or in combination with the effect.
- system configuration An example of the configuration of the system 1 according to the embodiment of the present disclosure will be described with reference to FIG. Referring to FIG. 1, system 1 includes base station 100 and user equipment (UE) 200.
- UE user equipment
- system 1 is a system that conforms to the 3GPP technical specifications (TS). More specifically, for example, the system 1 is a 5G or NR (New Radio) TS compliant system. Of course, system 1 is not limited to this example.
- the base station 100 is a node of a radio access network (RAN) and communicates with a UE (for example, UE 200) located in the coverage area 10 of the base station 100.
- RAN radio access network
- base station 100 communicates with a UE (eg, UE 200) using the RAN protocol stack.
- the protocol stack includes an RRC (Radio Resource Control) layer, a SDAP (Service Data Adaptation Protocol) layer, a PDCP (Packet Data Convergence Protocol) layer, an RLC (Radio Link Control) layer, a MAC (Medium Access Control) layer, and physical. Includes (Physical: PHY) layer.
- the protocol stack may not include all of these layers, but may include some of these layers.
- the base station 100 is gNB.
- the gNB is a node that provides the NR user plane and control plane protocol termination (NR user plane and control plane protocol terminations towards the UE) for the UE, and is connected to the 5GC (5G Core Network) via the NG interface.
- the base station 100 may be an en-gNB.
- the base station 100 may include a plurality of nodes.
- the plurality of nodes may include a first node that hosts a higher layer included in the protocol stack and a second node that hosts a lower layer included in the protocol stack. good.
- the upper layer may include an RRC layer, a SDAP layer and a PDCP layer, and the lower layer may include an RLC layer, a MAC layer and a PHY layer.
- the first node may be a CU (central unit), and the second node may be a DU (Distributed Unit).
- the plurality of nodes may include a third node that performs processing lower than the PHY layer, and the second node may perform processing higher than the PHY layer.
- the third node may be a RU (Radio Unit).
- the base station 100 may be one of the plurality of nodes, or may be connected to another unit of the plurality of nodes.
- the base station 100 may be an IAB (Integrated Access and Backhaul) donor or an IAB node.
- IAB Integrated Access and Backhaul
- the UE 200 communicates with the base station.
- the UE 200 communicates with the base station 100 when it is located within the coverage area 10 of the base station 100.
- the UE 200 communicates with a base station (for example, base station 100) using the protocol stack.
- a base station for example, base station 100
- Base station configuration An example of the configuration of the base station 100 according to the embodiment of the present disclosure will be described with reference to FIGS. 2 and 3.
- the base station 100 includes a wireless communication unit 110, a network communication unit 120, a storage unit 130, and a processing unit 140.
- the wireless communication unit 110 wirelessly transmits and receives signals. For example, the wireless communication unit 110 receives a signal from the UE and transmits a signal to the UE.
- the network communication unit 120 receives a signal from the network and transmits the signal to the network.
- the storage unit 130 stores various information.
- the processing unit 140 provides various functions of the base station 100.
- the processing unit 140 includes an information acquisition unit 141, a first communication processing unit 143, and a second communication processing unit 145.
- the processing unit 140 may further include other components other than these components. That is, the processing unit 140 may perform operations other than the operations of these components.
- the specific operations of the information acquisition unit 141, the first communication processing unit 143, and the second communication processing unit 145 will be described in detail later.
- the processing unit 140 (first communication processing unit 143) communicates with the UE (for example, UE 200) via the wireless communication unit 110.
- the processing unit 140 (second communication processing unit 145) communicates with another node (for example, a node in the core network or another base station) via the network communication unit 120.
- the base station 100 includes an antenna 181, an RF circuit 183, a network interface 185, a processor 187, a memory 189 and a storage 191.
- Antenna 181 converts the signal into radio waves and radiates the radio waves into space. Further, the antenna 181 receives a radio wave in space and converts the radio wave into a signal.
- the antenna 181 may include a transmitting antenna and a receiving antenna, or may be a single antenna for transmission and reception.
- the antenna 181 may be a directional antenna or may include a plurality of antenna elements.
- the RF circuit 183 performs analog processing of signals transmitted and received via the antenna 181.
- the RF circuit 183 may include a high frequency filter, an amplifier, a modulator, a low pass filter and the like.
- the network interface 185 is, for example, a network adapter, which transmits a signal to the network and receives a signal from the network.
- the processor 187 digitally processes signals transmitted and received via the antenna 181 and the RF circuit 183.
- the digital processing includes processing of the RAN protocol stack.
- the processor 187 also processes signals transmitted and received via the network interface 185.
- the processor 187 may include a plurality of processors or may be a single processor.
- the plurality of processors may include a baseband processor that performs the digital processing and one or more processors that perform other processing.
- the memory 189 stores a program executed by the processor 187, parameters related to the program, and data related to the program.
- the memory 189 may include at least one of a ROM (Read Only Memory), an EPROM (Erasable Programmable Read Only Memory), an EEPROM (Electrically Erasable Programmable Read Only Memory), a RAM (Random Access Memory), and a flash memory. All or part of the memory 189 may be contained within the processor 187.
- Storage 191 stores various information.
- the storage 191 may include at least one of an SSD (Solid State Drive) and an HDD (Hard Disc Drive).
- the wireless communication unit 110 may be mounted by the antenna 181 and the RF circuit 183.
- the network communication unit 120 may be implemented by the network interface 185.
- the storage unit 130 may be implemented by the storage 191.
- the processing unit 140 may be implemented by the processor 187 and the memory 189.
- a part or all of the processing unit 140 may be virtualized. In other words, a part or all of the processing unit 140 may be implemented as a virtual machine. In this case, a part or all of the processing unit 140 may operate as a virtual machine on a physical machine (that is, hardware) including a processor, a memory, and the like and a hypervisor.
- a physical machine that is, hardware
- the base station 100 may include a memory for storing a program (that is, memory 189) and one or more processors (that is, a processor 187) capable of executing the program.
- the one or more processors may execute the above program to operate the processing unit 140.
- the above program may be a program for causing the processor to execute the operation of the processing unit 140.
- the UE 200 includes a wireless communication unit 210, a storage unit 220, and a processing unit 230.
- the wireless communication unit 210 wirelessly transmits and receives signals. For example, the wireless communication unit 210 receives a signal from the base station and transmits a signal to the base station. For example, the wireless communication unit 210 receives a signal from another UE and transmits a signal to the other UE.
- the storage unit 220 stores various information.
- the processing unit 230 provides various functions of the UE 200.
- the processing unit 230 includes an information acquisition unit 231 and a communication processing unit 233.
- the processing unit 230 may further include other components other than these components. That is, the processing unit 230 may perform operations other than the operations of these components.
- the specific operations of the information acquisition unit 231 and the communication processing unit 233 will be described in detail later.
- the processing unit 230 communicates with a base station (for example, base station 100) or another UE via the wireless communication unit 210.
- a base station for example, base station 100
- another UE via the wireless communication unit 210.
- the UE 200 includes an antenna 281, an RF circuit 283, a processor 285, a memory 287 and a storage 289.
- Antenna 281 converts the signal into radio waves and radiates the radio waves into space. Further, the antenna 281 receives a radio wave in space and converts the radio wave into a signal.
- the antenna 281 may include a transmitting antenna and a receiving antenna, or may be a single antenna for transmission and reception.
- the antenna 281 may be a directional antenna or may include a plurality of antenna elements.
- the RF circuit 283 performs analog processing of signals transmitted and received via the antenna 281.
- the RF circuit 283 may include a high frequency filter, an amplifier, a modulator, a low pass filter and the like.
- the processor 285 digitally processes signals transmitted and received via the antenna 281 and the RF circuit 283.
- the digital processing includes processing of the RAN protocol stack.
- the processor 285 may include a plurality of processors or may be a single processor.
- the plurality of processors may include a baseband processor that performs the digital processing and one or more processors that perform other processing.
- the memory 287 stores a program executed by the processor 285, parameters related to the program, and data related to the program.
- the memory 287 may include at least one of ROM, EPROM, EEPROM, RAM and flash memory. All or part of the memory 287 may be contained within the processor 285.
- the storage 289 stores various information.
- the storage 289 may include at least one of SSD and HDD.
- the wireless communication unit 210 may be mounted by the antenna 281 and the RF circuit 283.
- the storage unit 220 may be implemented by the storage 289.
- the processing unit 230 may be implemented by the processor 285 and the memory 287.
- the processing unit 230 may be implemented by a SoC (System on Chip) including a processor 285 and a memory 287.
- the SoC may include an RF circuit 283, and the wireless communication unit 210 may also be implemented by the SoC.
- the UE 200 may include a memory for storing a program (that is, memory 287) and one or more processors (that is, a processor 285) capable of executing the program.
- One or more processors may execute the above program to operate the processing unit 230.
- the above program may be a program for causing the processor to execute the operation of the processing unit 230.
- the base station 100 acquires a master information block (MIB).
- the base station 100 (first communication processing unit 143) transmits the above MIB.
- the MIB includes 1-bit information regarding the bandwidth of a control resource set (CORESET) for a UE having a limited bandwidth capability.
- the UE 200 (communication processing unit 233) receives the above MIB.
- the UE 200 (information acquisition unit 231) acquires the 1-bit information included in the MIB.
- the UE 200 can use CORESET with a bandwidth suitable for the UE 200. More specifically, for example, if the UE 200 is a UE with a limited bandwidth capability, the UE 200 can use the CORESET for that UE.
- the UE with limited bandwidth capabilities has a narrower maximum bandwidth than a regular UE.
- the narrow maximum bandwidth is narrower than 96 resource blocks (RB).
- the narrow maximum bandwidth may be narrower than 48 RB.
- the narrow maximum bandwidth may be narrower than 24 RB.
- the above-mentioned limited bandwidth capability may be referred to as a reduced bandwidth capability, or may be referred to as a narrow bandwidth capability.
- the UE having a limited bandwidth capability may also have other restricted capabilities, simply a UE with a limited capability (or reduced capability), or RedCap (Reduced). Capability) It may be called UE.
- the other limited capabilities may include a limited number of antennas, and a UE with a limited capability may have fewer antennas than a normal UE.
- the other limited capabilities may include the limited duplex capability, and a UE with the limited capability may only communicate with half-duplex. May be good.
- the half-duplex communication may be FDD (Frequency Division Duplex) half-duplex-FDD.
- the UE having a limited bandwidth capability may have a relaxed capability.
- the mitigated capabilities may include mitigated processing capabilities, and the UE with limited bandwidth capabilities may have lower processing performance than a normal UE. ..
- the CORESET is a CORESET for a Type0-PDCCH (Physical Downlink Control Channel) CSS (Common Search Space) set.
- the CORESET is CORESET # 0.
- PDCCH for SIB1 is arranged.
- the UE 200 to receive the PDCCH for the SIB1 and receive the SIB1 using CORESET # 0 with a bandwidth suitable for the UE 200.
- the 1-bit information is information indicating whether an additional MIB including the CORESET information indicating the bandwidth of the CORESET is transmitted.
- the value of the 1-bit information is 1, and the 1-bit information indicates that the additional MIB is transmitted.
- the value of the 1-bit information is 0, and the 1-bit information indicates that the additional MIB is not transmitted.
- the value of the 1-bit information when the additional MIB is transmitted, the value of the 1-bit information may be 0, and the 1-bit information may indicate that the additional MIB is transmitted. .. When the additional MIB is not transmitted, the value of the 1-bit information may be 1, and the 1-bit information may indicate that the additional MIB is transmitted.
- the MIB includes Mib-bisPressence-r17, which is 1-bit information indicating whether the additional MIB is transmitted.
- the spare 1 bit contained in the MIB is replaced with the 1 bit of information (that is, Mib-bisPressence-r17), so that the size of the payload of the MIB remains 23 bits. .. Therefore, backward compatibility of the MIB is maintained.
- the additional MIB above is a MIB for UEs with limited bandwidth capabilities.
- the additional MIB may be referred to as MIB-bis.
- the additional MIBs mentioned above may be referred to by other names.
- the base station 100 acquires the additional MIB including the CORESET information.
- the base station 100 (first communication processing unit 143) transmits the additional MIB.
- the UE 200 acquires the 1-bit information included in the MIB. Then, for example, when the UE 200 is a UE having a limited bandwidth capability and the one-bit information contained in the MIB indicates that the additional MIB is transmitted, the UE 200 ( The communication processing unit 233) receives the additional MIB. The UE 200 (information acquisition unit 231) acquires the CORESET information included in the additional MIB.
- the transmission of the additional MIB described above enables transmission of a large amount of information (for example, various combinations of parameters of CORESET # 0) while maintaining backward compatibility of the MIB.
- the base station 100 transmits the MIB on the physical broadcast channel (PBCH), and transmits the additional MIB on another physical channel.
- PBCH physical broadcast channel
- the additional PBCH may be referred to as PBCH-bis.
- the other physical channels are arranged in a frequency resource determined according to the frequency resource in which the PBCH is arranged. This allows, for example, the UE 200 to receive the additional MIB without receiving information about the other physical channels.
- the other physical channel is arranged in one or more predetermined RBs out of a plurality of RBs (for example, 20 RBs) in which the PBCH is arranged.
- the other physical channel may be arranged in a plurality of RBs (for example, 20 RB) in which the PBCH is arranged.
- the other physical channel may be arranged in a predetermined number of RBs in the center of a plurality of RBs (for example, 20 RBs) in which the PBCH is arranged. This allows, for example, the UE 200 to easily receive the additional MIB.
- the other physical channels are arranged in one or more symbols different from the symbols in which the PBCH is arranged.
- the additional MIB is MIB-bis and includes pdch-ConfigSIB1-RedCap-r17.
- the pdch-ConfigSIB1-RedCap-r17 contains the same information element (IE) as the pdch-ConfigSIB1 contained in the MIB, and specifically includes the controlResourceSetZero and the searchSpaceZero.
- the controlResureSetZero indicates the bandwidth (eg, number of RBs) of a CORESET for a UE with a limited bandwidth capability.
- the controlResureSetZero further indicates at least one of the multiple patterns, the number of symbols and the RB offset of the CORESET, in addition to the bandwidth of the CORESET. For example, 16 combinations of the multiple pattern of CORESET, the number of RBs, the number of symbols, and the RB offset are predetermined, and the controlResourceSetZero indicates one of the 16 combinations.
- CORESET information-Contents of CORESET information in the additional MIB indicates the bandwidth of the CORESET for the UE having the capability of the limited bandwidth. .. In other words, the CORESET information determines the bandwidth of the CORESET.
- the CORESET information indicates one of two or more predetermined bandwidths as the CORESET bandwidth.
- the above-mentioned two or more predetermined bandwidths include a predetermined bandwidth narrower than 24 RB. This allows, for example, a UE with a limited bandwidth capability to use CORESET even if the UE can communicate only with a bandwidth narrower than 24 RB.
- the predetermined bandwidth of 2 or more may include only a predetermined bandwidth narrower than 24 RB.
- the two or more predetermined bandwidths may include one or more predetermined bandwidths narrower than 24 RB and one or more predetermined bandwidths of 24 RB or more.
- the predetermined bandwidth of 2 or more is not limited to the above example.
- the two or more predetermined bandwidths may not include a predetermined bandwidth narrower than 24 RB. Even in such a case, a normal UE and a UE having a limited bandwidth capability can use CORESET # 0 different from each other.
- the above MIB further contains 4-bit information regarding other CORESET.
- the other CORESET is a CORESET for a normal UE, and the 4-bit information is, for example, the controlResourceSetZero shown in FIG.
- the 4-bit information indicates 24 RB, 48 RB or 96 RB as the bandwidth of the other CORESET.
- the UE 200 acquires the CORESET information included in the additional MIB.
- the UE 200 (communication processing unit 233) identifies the CORESET for a UE having a limited bandwidth capability based on the CORESET information, and uses the CORESET for SIB1.
- Receive PDCCH The UE 200 (communication processing unit 233) receives SIB1 based on the DCI (Downlink Control Information) transmitted in the PDCCH.
- DCI Downlink Control Information
- the base station 100 acquires and transmits a MIB including 1-bit information indicating whether the MIB-bis is transmitted (S310).
- the UE 200 receives the MIB and acquires the above-mentioned 1-bit information.
- Base station 100 acquires and transmits MIB-bis (S320).
- the MIB-bis contains CORESET information indicating the bandwidth of CORESET for UEs with limited bandwidth capabilities.
- the UE 200 receives the MIB-bis and acquires the CORESET information based on the 1-bit information.
- Base station 100 acquires SIB1 and transmits it (S320).
- the UE 200 receives SIB1 based on the CORESET information.
- the one-bit information included in the MIB is information indicating whether an additional MIB including the CORESET information indicating the bandwidth of the CORESET is transmitted.
- the one-bit information according to the first embodiment is not limited to this example.
- 1-bit information-1-bit information CORESET information
- the 1-bit information included in the MIB is CORESET information indicating the bandwidth of the CORESET. May be good. This allows the UE 200 to use CORESET with a bandwidth suitable for the UE 200 while maintaining backward compatibility of the MIB and without adding new information outside the MIB.
- the MIB may include redCap-CORESET-Zero-RB-r17, which is 1-bit information indicating the bandwidth of CORESET for a UE having a limited bandwidth capability.
- the spare 1 bit contained in the MIB is replaced with the above 1 bit of information (that is, redCap-CORESET-Zero-RB-r17), so that the size of the payload of the MIB is 23 bits. It remains. Therefore, backward compatibility of the MIB is maintained.
- the CORESET information (that is, the 1-bit information) may indicate one of two predetermined bandwidths as the CORESET bandwidth.
- the predetermined bandwidth of 2 or more may include a predetermined bandwidth narrower than 24 RB. This allows, for example, a UE with a limited bandwidth capability to use CORESET even if the UE can communicate only with a bandwidth narrower than 24 RB.
- the above two predetermined bandwidths may include only a predetermined bandwidth narrower than 24 RB.
- the above two predetermined bandwidths may include 5RB and 10RB.
- the 1-bit information when the value of the 1-bit information is 0, the 1-bit information may indicate 5RB, and when the value of the 1-bit information is 1, the 1-bit information may be shown. May indicate 10 RB.
- the above two predetermined bandwidths may include a predetermined bandwidth narrower than 24 RB and a predetermined bandwidth of 24 RB or more.
- the above two bandwidths are not limited to the above example.
- the above two predetermined bandwidths may not include a predetermined bandwidth narrower than 24 RB. Even in such a case, a normal UE and a UE having a limited bandwidth capability can use CORESET # 0 different from each other.
- the 1-bit information may further indicate at least one of the multiple patterns of the CORESET, the number of symbols, and the RB offset, in addition to the bandwidth of the CORESET. This allows, for example, the use of parameters suitable for the UE 200. Alternatively, the 1-bit information may indicate only the bandwidth of the CORESET. In this case, the multiple pattern, the number of symbols, and the RB offset indicated by other CORESET information contained in the MIB (for example, controlResourceSetZero shown in FIG. 9) may be used as the parameters of the CORESET.
- the UE 200 may acquire the 1-bit information included in the MIB. Then, when the UE 200 is a UE having a limited bandwidth capability, the UE 200 (communication processing unit 233) is for a UE having a limited bandwidth capability based on the above 1-bit information.
- the CORESET may be specified, or the CORESET may be used to receive a PDCCH for SIB1.
- the UE 200 (communication processing unit 233) may receive the SIB1 based on the DCI transmitted in the PDCCH.
- Base station 100 acquires and transmits a MIB (S350).
- the MIB contains one bit of information indicating the bandwidth of a CORESET for a UE with a limited bandwidth capability.
- the UE 200 receives the MIB and acquires the information of the 1 bit.
- Base station 100 acquires SIB1 and transmits it (S360).
- the UE 200 receives SIB1 based on the above 1-bit information.
- the base station 100 acquires an RRC Reconfiguration message for handover of the UE 200 from the source cell to the target cell.
- the base station 100 (first communication processing unit 143) transmits the above RRC Configuration message to the UE 200.
- the RRC Configuration message is a first CORESET information about the first CORESET in the target cell and a second CORESET information for the UE having a limited bandwidth capability in the target cell. Includes a second CORESET information about CORESET.
- the UE 200 receives the above RRC Configuration message from the base station 100.
- the UE 200 (information acquisition unit 231) acquires the first CORESET information or the second CORESET information.
- the UE 200 can use CORESET with a bandwidth suitable for the UE 200 in the target cell. More specifically, for example, if the UE 200 is a UE with a limited bandwidth capability, the UE 200 can use the CORESET for the UE in the target cell.
- the handover is a handover between two base stations 100.
- the base station 100 that is, the source base station
- the base station 100 that is, the target base station
- the handover may be referred to as an Xn-based handover (Xn based Handover) or an NG-based handover (NG based Handover).
- the UE 200 moves from the coverage area 10A of the base station 100A to the coverage area 10B of the base station 100B.
- the UE 200 is handed over from the source cell of the base station 100A (that is, the coverage area 10A) to the target cell of the base station 100B (that is, the coverage area 10B).
- the base station 100A transmits the above RRC Configuration message to the UE 200.
- the base station 100B acquires the above RRC Configuration message.
- the base station 100B (second communication processing unit 145) transmits a Handover Request Acknowledge message including the above RRC Reconnection message to the base station 100A.
- the base station 100A receives the Handover Request Acknowledge message including the RRC Reconnection message.
- the base station 100A (information acquisition unit 141) acquires the above RRC Configuration message.
- the base station 100A (first communication processing unit 143) transmits the above RRC Configuration message to the UE 200.
- each of the first CORESET and the second CORESET is a CORESET for Type0-PDCCH CSS set.
- each of the first CORESET and the second CORESET is CORESET # 0.
- a PDCCH for SIB1 is arranged.
- the UE 200 to receive the PDCCH for the SIB1 and receive the SIB1 using CORESET # 0, which has a bandwidth suitable for the UE 200, in the target cell.
- the first CORESET information indicates the bandwidth of the first CORESET
- the second CORESET information indicates the bandwidth of the second CORESET. This allows, for example, a normal UE and a UE with limited bandwidth capabilities to use different CORESET # 0s.
- the bandwidth of the first CORESET is one of 24RB, 48RB and 96RB.
- the bandwidth of the second CORESET is one of two or more predetermined bandwidths.
- the above-mentioned two or more predetermined bandwidths include a predetermined bandwidth narrower than 24 RB. This allows, for example, a UE with a limited bandwidth capability to use CORESET even if the UE can communicate only with a bandwidth narrower than 24 RB.
- the predetermined bandwidth of 2 or more may include only a predetermined bandwidth narrower than 24 RB.
- the two or more predetermined bandwidths may include one or more predetermined bandwidths narrower than 24 RB and one or more predetermined bandwidths of 24 RB or more.
- the predetermined bandwidth of 2 or more is not limited to the above example.
- the two or more predetermined bandwidths may not include a predetermined bandwidth narrower than 24 RB. Even in such a case, a normal UE and a UE having a limited bandwidth capability can use different CORESET # 0s in the target cell.
- the first CORESET information is the first controlResorceSetZero
- the second CORESET information is the second ControlResourceSetZero.
- controlResourceSetZero shows not only the bandwidth of CORESET (ie, the number of RBs), but also the multiple pattern of CORESET, the number of symbols and the RB offset. This allows, for example, a normal UE and a UE with limited capabilities to use CORESET # 0 different from each other in various respects in the target cell.
- the UE 200 acquires the first CORESET information or the second CORESET information included in the RRC Reconnection message. For example, when the UE 200 is a UE having a limited bandwidth capability, the UE 200 (communication processing unit 233) identifies the second CORESET in the target cell based on the second CORESET information. Then, the second CORESET is used to receive the PDCCH for SIB1. The UE 200 (communication processing unit 233) receives the SIB1 based on the DCI transmitted in the PDCCH.
- the above RRC Reconfiguration message includes a first pdch-configCommon and a second pdch-configCommon for a UE having a limited bandwidth capability in a BWP-DownlinkCommon. ..
- the first pdch-configCommon includes the first CORESET information (that is, the first controlResourceSetZero).
- the second pdch-configCommon includes the second CORESET information (that is, the second controlResourceSetZero).
- the RRC Reconnection message may include the first CORESET information and the second CORESET information in the pdch-configCommon included in the BWP-DownlinkCommon.
- the arrangement of the first CORESET information and the second CORESET information in the RRC Configuration message is not limited to these examples.
- the UE 200 transmits a Measurement Report message to the base station 100A (S410).
- Base station 100A makes a handover decision (S420).
- Base station 100A transmits a Handover Request message to base station 100B (S430).
- the base station 100B receives the Handover Request message.
- Base station 100B performs admission control (S440).
- the base station 100B transmits a Handover Request Acknowledge message including an RRC Reconnection message to the base station 100A (S450).
- the base station 100A receives the Handover Request Acknowledge message.
- the RRC Reconnection message contains the first CORESET information regarding the first CORESET in the target cell and the second CORESET information regarding the second CORESET for the UE having the limited bandwidth capability in the target cell. include.
- the base station 100A acquires the RRC Reconnection message and transmits the RRC Reconnection message to the UE 200 (S460).
- the UE 200 receives the RRC Reconnection message and acquires the first CORESET information or the second CORESET information.
- the handover is a handover between two base stations 100.
- the handover according to the second embodiment is not limited to this example.
- the handover may be a handover between two cells of the same base station 100 (for example, base station 100A).
- the base station 100B described above may not operate, and only the base station 100A and the UE 200 may operate.
- the above RRC Reconnection message may be generated by the base station 100A.
- the system 1 is a 5G or NR TS compliant system.
- the system 1 according to the embodiment of the present disclosure is not limited to this example.
- System 1 may be a system compliant with other TSs of 3GPP.
- the system 1 may be an LTE (Long Term Evolution), LTE-A (LTE Advanced) or 4G TS compliant system, and the base station 100 may be an eNB (evolved Node B). good.
- the system 1 may be a 3G TS-compliant system, and the base station 100 may be a NodeB.
- the system 1 may be a next-generation (eg, 6G) TS-compliant system.
- system 1 may be a system compliant with the TS of another standardization body for mobile communication.
- the steps in the process described herein do not necessarily have to be performed in chronological order in the order described in the flowchart or sequence diagram.
- the steps in the process may be executed in a different order from the order described in the flowchart or the sequence diagram, or may be executed in parallel.
- some of the steps in the process may be deleted, and additional steps may be added to the process.
- a method including the operation of one or more components of the apparatus described herein may be provided, or a program for causing a computer to perform the operation of the above components may be provided.
- a non-transitional substantive recording medium that can be read by the computer on which the program is recorded may be provided.
- such methods, programs, and computer-readable non-transitory tangible computer-readable storage medium are also included in the present disclosure.
- the user device is a mobile station, a mobile terminal, a mobile device, a mobile unit, a subscriber station, a subscriber terminal, a subscriber device, a subscriber unit, and wireless. It may be referred to by another name such as a station, a wireless terminal, a wireless device, a wireless unit, a remote station, a remote terminal, a remote device, or a remote unit.
- “transmit” may mean processing at least one layer in the protocol stack used for transmission, or the signal may be physically transmitted wirelessly or by wire. It may mean to send to.
- “transmitting” may mean a combination of processing the at least one layer and physically transmitting the signal wirelessly or by wire.
- “receive” may mean processing at least one layer in the protocol stack used for reception, or physically receive the signal wirelessly or by wire. It may mean that.
- “receive” may mean a combination of performing the processing of at least one layer and physically receiving the signal wirelessly or by wire.
- "obtain / acquire” may mean to acquire information from stored information, and to acquire information from information received from another node. It may mean that the information is acquired, or it may mean that the information is acquired by generating the information.
- (Feature 2) The base station according to feature 1, wherein the 1-bit information is information indicating whether an additional MIB including the CORESET information indicating the bandwidth of the CORESET is transmitted.
- Feature 3 The base station according to feature 2, wherein the additional MIB is a MIB for a user device having a limited bandwidth capability.
- the information acquisition unit acquires the additional MIB and obtains the additional MIB.
- the communication processing unit transmits the additional MIB.
- the base station according to feature 2 or 3.
- Feature 5 The base station according to feature 4, wherein the communication processing unit transmits the MIB on a physical broadcast channel (PBCH) and transmits the additional MIB on another physical channel.
- PBCH physical broadcast channel
- Feature 7 The base station according to feature 6, wherein the other physical channel is arranged in one or more predetermined RBs among a plurality of resource blocks (RBs) in which the PBCH is arranged.
- RBs resource blocks
- the CORESET information indicates one of two or more predetermined bandwidths as the bandwidth of the CORESET.
- the two or more predetermined bandwidths include a predetermined bandwidth narrower than 24 resource blocks (RB).
- the base station according to any one of the features 2 to 9.
- the MIB further contains 4 bits of information about other CORESETs.
- the 4-bit information indicates 24 RB, 48 RB or 96 RB as the bandwidth of the other CORESET.
- the base station according to any one of the features 1 to 10.
- Feature 12 The base station according to any one of features 1 to 11, wherein the CORESET is a CORESET for a Type0-PDCCH (Physical Downlink Control Channel) CSS (Common Search Space) set.
- Type0-PDCCH Physical Downlink Control Channel
- CSS Common Search Space
- a communication processing unit that receives a master information block (MIB) containing 1-bit information about the bandwidth of a control resource set (CORESET) for a user device having a limited bandwidth capability. 243) and An information acquisition unit (241) for acquiring the 1-bit information included in the MIB, and (200).
- MIB master information block
- CORESET control resource set
- CORESET Control Resource Set
- the first CORESET information indicates the bandwidth of the first CORESET.
- the second CORESET information indicates the bandwidth of the second CORESET.
- the bandwidth of the first CORESET is one of 24 Resource Blocks (RBs), 48 RBs and 96 RBs.
- the bandwidth of the second CORESET is one of two or more predetermined bandwidths.
- the two or more predetermined bandwidths include a predetermined bandwidth narrower than 24 RB.
- the first CORESET information is the first controlResourceSetZero.
- the second CORESET information is the second controlResourceSetZero.
- the base station according to any one of the features 14 to 16.
- the first CORESET and the second CORESET are each CORESET for Type0-PDCCH (Physical Downlink Control Channel) CSS (Common Search Space) set, according to any one of the features 14 to 17. base station.
- Type0-PDCCH Physical Downlink Control Channel
- CSS Common Search Space
- RRC Radio Resource Control
- RRC Radio Resource Control
- a base station 100B
- a communication processing unit (145) Equipped with The RRC Reconnection message is a first CORESET information about a first Control Resource Set (CORESET) in the target cell and a first for a user device having a limited bandwidth capability in the target cell. Includes a second CORESET information regarding 2 CORESETs, base station.
- CORESET Control Resource Set
- MIB Master Information Block
- CORESET Control Resource Set
- MIB Master Information Block
- CORESET Control Resource Set
- the RRC Reconnection message is a first CORESET information about a first Control Resource Set (CORESET) in the target cell and a first for a user device having a limited bandwidth capability in the target cell. Includes a second CORESET information regarding 2 CORESETs, Method.
- (Feature 24) It is a method performed by the user device (200).
- Including The RRC Reconnection message is a first CORESET information about a first Control Resource Set (CORESET) in the target cell and a first for a user device having a limited bandwidth capability in the target cell.
- RRC Radio Resource Control
- the base station (100B) Acquiring an RRC (Radio Resource Control) Reconnection message for handover of a user device (200) from a source cell to a target cell, and Sending a Handover Request Acknowledge message including the RRC Reconnection message to the base station (100A) of the source cell, and Including
- the RRC Reconnection message is a first CORESET information about a first Control Resource Set (CORESET) in the target cell and a first for a user device having a limited bandwidth capability in the target cell. Includes a second CORESET information regarding 2 CORESETs, Method.
- MIB Master Information Block
- CORESET Control Resource Set
- MIB Master Information Block
- CORESET Control Resource Set
- the RRC Reconnection message is a first CORESET information about a first Control Resource Set (CORESET) in the target cell and a first for a user device having a limited bandwidth capability in the target cell. Includes a second CORESET information regarding 2 CORESETs, program.
- CORESET Control Resource Set
- RRC Radio Resource Control
- the RRC Reconnection message is a first CORESET information about a first Control Resource Set (CORESET) in the target cell and a first for a user device having a limited bandwidth capability in the target cell.
- CORESET Control Resource Set
- the second CORESET information about 2 CORESETs Acquiring the first CORESET information or the second CORESET information, A program that lets your computer run.
- the RRC Reconnection message is a first CORESET information about a first Control Resource Set (CORESET) in the target cell and a first for a user device having a limited bandwidth capability in the target cell. Includes a second CORESET information regarding 2 CORESETs, program.
- CORESET Control Resource Set
- MIB Master Information Block
- CORESET Control Resource Set
- MIB Master Information Block
- CORESET Control Resource Set
- RRC Reconnection message for handover of a user device (200) from a source cell to a target cell, and Sending the RRC Reconnection message to the user device and It is a non-transitional substantive recording medium that can be read by a computer that records a program for making a computer execute.
- the RRC Reconnection message is a first CORESET information about a first Control Resource Set (CORESET) in the target cell and a first for a user device having a limited bandwidth capability in the target cell. Includes a second CORESET information regarding 2 CORESETs, A non-transitional substantive recording medium that can be read by a computer.
- RRC Radio Resource Control
- the RRC Reconnection message is a first CORESET information about a first Control Resource Set (CORESET) in the target cell and a first for a user device having a limited bandwidth capability in the target cell.
- CORESET Control Resource Set
- the second CORESET information about 2 CORESETs Acquiring the first CORESET information or the second CORESET information,
- a non-transitional substantive recording medium that can be read by a computer that records a program that causes the computer to execute.
- RRC Reconnection message for handover of a user device (200) from a source cell to a target cell, and Sending a Handover Request Acknowledge message including the RRC Reconnection message to the base station (100A) of the source cell, and It is a non-transitional substantive recording medium that can be read by a computer that records a program for making a computer execute.
- the RRC Reconnection message is a first CORESET information about a first Control Resource Set (CORESET) in the target cell and a first for a user device having a limited bandwidth capability in the target cell. Includes a second CORESET information regarding 2 CORESETs, A non-transitional substantive recording medium that can be read by a computer.
- CORESET Control Resource Set
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Abstract
Description
1.システムの構成
2.基地局の構成
3.ユーザ機器の構成
4.第1の実施形態
4.1.動作例
4.2.変形例
5.第2の実施形態
5.1.動作例
5.2.変形例
6.変形例
図1を参照して、本開示の実施形態に係るシステム1の構成の例を説明する。図1を参照すると、システム1は、基地局100及びユーザ機器(UE)200を含む。
基地局100は、無線アクセスネットワーク(Radio Access Network:RAN)のノードであり、基地局100のカバレッジエリア10内に位置するUE(例えば、UE200)と通信する。
UE200は、基地局と通信する。例えば、UE200は、基地局100のカバレッジエリア10内に位置する場合に、基地局100と通信する。
図2及び図3を参照して、本開示の実施形態に係る基地局100の構成の例を説明する。
まず、図2を参照して、本開示の実施形態に係る基地局100の機能構成の例を説明する。図2を参照すると、基地局100は、無線通信部110、ネットワーク通信部120、記憶部130及び処理部140を備える。
次に、図3を参照して、本開示の実施形態に係る基地局100のハードウェア構成の例を説明する。図3を参照すると、基地局100は、アンテナ181、RF回路183、ネットワークインターフェース185、プロセッサ187、メモリ189及びストレージ191を備える。
図4及び図5を参照して、本開示の実施形態に係るUE200の構成の例を説明する。
まず、図4を参照して、本開示の実施形態に係るUE200の機能構成の例を説明する。図4を参照すると、UE200は、無線通信部210、記憶部220及び処理部230を備える。
次に、図5を参照して、本開示の実施形態に係るUE200のハードウェア構成の例を説明する。図5を参照すると、UE200は、アンテナ281、RF回路283、プロセッサ285、メモリ287及びストレージ289を備える。
図6~図10を参照して、本開示の第1の実施形態を説明する。
図6~図8を参照して、第1の実施形態に係る基地局100及びUE200の動作の例を説明する。
制限された帯域幅のケイパビリティをもつ上記UEは、通常のUEよりも狭い最大帯域幅を有する。例えば、当該狭い最大帯域幅は、96リソースブロック(Resource Block:RB)よりも狭い。上記狭い最大帯域幅は、48RBよりも狭くてもよい。上記狭い最大帯域幅は、24RBよりも狭くてもよい。
例えば、上記CORESETは、Type0-PDCCH(Physical Downlink Control Channel) CSS(Common Search Space) setのためのCORESETである。換言すると、上記CORESETは、CORESET#0である。上記CORESETにおいて、SIB1のためのPDCCHが配置される。
例えば、上記1ビットの情報は、上記CORESETの上記帯域幅を示すCORESET情報を含む追加のMIBが送信されるかを示す情報である。
例えば、上記追加のMIBは、制限された帯域幅のケイパビリティをもつUE用のMIBである。上記追加のMIBは、MIB-bisと呼ばれてもよい。当然ながら、上記追加のMIBは、他の名称で呼ばれてもよい。
例えば、基地局100(情報取得部141)は、上記CORESET情報を含む上記追加のMIBを取得する。基地局100(第1通信処理部143)は、上記追加のMIBを送信する。
例えば、基地局100(第1通信処理部143)は、上記MIBを物理報知チャネル(Physical Broadcast Channel:PBCH)において送信し、上記追加のMIBを他の物理チャネルにおいて送信する。これにより、例えば、PBCHを維持することができる。一例として、上記他の物理チャネルは、追加のPBCHである。当該追加のPBCHは、PBCH-bisと呼ばれてもよい。
図7の例を参照すると、上記追加のMIBは、MIB-bisであり、pdcch-ConfigSIB1-RedCap-r17を含む。当該pdcch-ConfigSIB1-RedCap-r17は、MIBに含まれるpdcch-ConfigSIB1と同じ情報要素(information element:IE)を含み、具体的には、controlResourceSetZero及びsearchSpaceZeroを含む。当該controlResourceSetZeroは、制限された帯域幅のケイパビリティをもつUE用のCORESETの帯域幅(例えば、RB数)を示す。上記controlResourceSetZeroは、当該CORESETの帯域幅に加えて、上記CORESETの多重パターン、シンボル数及びRBオフセットのうちの少なくとも1つをさらに示す。例えば、上記CORESETの多重パターン、RB数、シンボル数及びRBオフセットの16の組合せが予め定められ、上記controlResourceSetZeroは、当該16の組合せのうちの1つを示す。
-追加のMIB内のCORESET情報の内容
上述したように、上記追加のMIBに含まれる上記CORESET情報は、制限された帯域幅のケイパビリティをもつUE用のCORESETの帯域幅を示す。換言すると、上記CORESET情報は、当該CORESETの帯域幅を決定する。
上記MIBは、他のCORESETに関する4ビットの情報をさらに含む。当該他のCORESETは、通常のUE用のCORESETであり、当該4ビットの情報は、例えば、図6に記載されているcontrolResourceSetZeroである。上記4ビットの情報は、上記他のCORESETの帯域幅として、24RB、48RB又は96RBを示す。
上述したように、例えば、UE200(情報取得部231)は、上記追加のMIBに含まれる上記CORESET情報を取得する。この場合に、例えば、UE200(通信処理部233)は、上記CORESET情報に基づいて、制限された帯域幅のケイパビリティをもつUE用の上記CORESETを特定し、上記CORESETを使用してSIB1のためのPDCCHを受信する。UE200(通信処理部233)は、当該PDCCHにおいて送信されるDCI(Downlink Control Information)に基づいて、SIB1を受信する。
図8を参照して、第1の実施形態に係る処理の例を説明する。
第1の実施形態の上述した例では、上記MIBに含まれる上記1ビットの情報は、上記CORESETの上記帯域幅を示すCORESET情報を含む追加のMIBが送信されるかを示す情報である。しかし、第1の実施形態に係る上記1ビットの情報は、この例に限定されない。
-1ビットの情報=CORESET情報
第1の実施形態の変形例では、上記MIBに含まれる上記1ビットの情報は、上記CORESETの上記帯域幅を示すCORESET情報であってもよい。これにより、MIBの後方互換性を維持しつつ、且つ、MIB外で新たな情報を追加することなく、UE200が、UE200に適した帯域幅をもつCORESETを使用することが可能になる。
UE200(情報取得部231)は、上記MIBに含まれる上記1ビットの情報を取得してもよい。そして、UE200が、制限された帯域幅のケイパビリティをもつUEである場合に、UE200(通信処理部233)は、上記1ビットの情報に基づいて、制限された帯域幅のケイパビリティをもつUE用の上記CORESETを特定してもよく、上記CORESETを使用してSIB1のためのPDCCHを受信してもよい。UE200(通信処理部233)は、当該PDCCHにおいて送信されるDCIに基づいて、SIB1を受信してもよい。
図10を参照して、第1の実施形態の変形例に係る処理の例を説明する。
図11及び図12を参照して、本開示の第2の実施形態を説明する。
図11及び図12を参照して、第2の実施形態に係る基地局100及びUE200の動作の例を説明する。
例えば、上記ハンドオーバは、2つの基地局100間のハンドオーバである。ここでは、上記ソースセルの基地局100(即ち、ソース基地局)を基地局100Aと表し、上記ターゲットセルの基地局100(即ち、ターゲット基地局)を基地局100Bと表す。上記ハンドオーバは、Xnベースのハンドオーバ(Xn based Handover)と呼ばれてもよいし、NGベースのハンドオーバ(NG based Handover)と呼ばれてもよい。
制限された帯域幅のケイパビリティをもつ上記UEについての説明は、第1の実施形態における説明と同じである。よって、ここでは重複する説明を省略する。
例えば、上記第1のCORESET及び上記第2のCORESETの各々は、Type0-PDCCH CSS setのためのCORESETである。換言すると、上記第1のCORESET及び上記第2のCORESETの各々は、CORESET#0である。上記第1のCORESET及び上記第2のCORESETの各々において、SIB1のためのPDCCHが配置される。
-CORESET情報の内容
例えば、上記第1のCORESET情報は、上記第1のCORESETの帯域幅を示し、上記第2のCORESET情報は、上記第2のCORESETの帯域幅を示す。これにより、例えば、通常のUEと、制限された帯域幅のケイパビリティをもつUEとが、互いに異なるCORESET#0を使用することが可能になる。
上述したように、例えば、UE200(情報取得部231)は、上記RRC Reconfigurationメッセージに含まれる上記第1のCORESET情報又は上記第2のCORESET情報を取得する。例えば、UE200が、制限された帯域幅のケイパビリティをもつUEである場合に、UE200(通信処理部233)は、上記第2のCORESET情報に基づいて、上記ターゲットセルにおける上記第2のCORESETを特定し、上記第2のCORESETを使用してSIB1のためのPDCCHを受信する。UE200(通信処理部233)は、当該PDCCHにおいて送信されるDCIに基づいて、SIB1を受信する。
例えば、上記RRC Reconfigurationメッセージは、BWP-DownlinkCommon内に、第1のpdcch-configCommonと、制限された帯域幅のケイパビリティをもつUEのための第2のpdcch-configCommonとを含む。上記第1のpdcch-configCommonは、上記第1のCORESET情報(即ち、第1のcontrolResourceSetZero)を含む。上記第2のpdcch-configCommonは、上記第2のCORESET情報(即ち、第2のcontrolResourceSetZero)を含む。
図12を参照して、第2の実施形態に係るハンドオーバ処理の一部の例を説明する。
第2の実施形態の上述した例では、上記ハンドオーバは、2つの基地局100間のハンドオーバである。しかし、第2の実施形態に係るハンドオーバは、この例に限定されない。
本開示の実施形態の上述した例では、システム1は、5G又はNRのTSに準拠したシステムである。しかし、本開示の実施形態に係るシステム1は、この例に限定されない。
マスター情報ブロック(Master Information Block:MIB)を取得する情報取得部(141)と、
前記MIBを送信する通信処理部(143)と、
を備え、
前記MIBは、制限された帯域幅のケイパビリティをもつユーザ機器用の制御リソースセット(Control Resource Set:CORESET)の帯域幅に関する1ビットの情報を含む、
基地局(100)。
前記1ビットの情報は、前記CORESETの前記帯域幅を示すCORESET情報を含む追加のMIBが送信されるかを示す情報である、特徴1に記載の基地局。
前記追加のMIBは、制限された帯域幅のケイパビリティをもつユーザ機器用のMIBである、特徴2に記載の基地局。
前記情報取得部は、前記追加のMIBを取得し、
前記通信処理部は、前記追加のMIBを送信する、
特徴2又は3に記載の基地局。
前記通信処理部は、前記MIBを物理報知チャネル(Physical Broadcast Channel:PBCH)において送信し、前記追加のMIBを他の物理チャネルにおいて送信する、特徴4に記載の基地局。
前記他の物理チャネルは、前記PBCHが配置される周波数リソースに応じて決まる周波数リソースに配置される、特徴5に記載の基地局。
前記他の物理チャネルは、前記PBCHが配置される複数のリソースブロック(Resource Block:RB)のうちの1つ以上の所定のRBに配置される、特徴6に記載の基地局。
前記1ビットの情報は、前記CORESETの前記帯域幅を示すCORESET情報である、特徴1に記載の基地局。
前記1ビットの情報は、前記CORESETの多重パターン、シンボル数及びリソースブロックオフセットのうちの少なくとも1つをさらに示す、特徴8に記載の基地局。
前記CORESET情報は、前記CORESETの前記帯域幅として、2以上の所定の帯域幅のうちの1つを示し、
前記2以上の所定の帯域幅は、24リソースブロック(Resource Block:RB)よりも狭い所定の帯域幅を含む、
特徴2~9のいずれか1項に記載の基地局。
前記MIBは、他のCORESETに関する4ビットの情報をさらに含み、
前記4ビットの情報は、前記他のCORESETの帯域幅として、24RB、48RB又は96RBを示す、
特徴1~10のいずれか1項に記載の基地局。
前記CORESETは、Type0-PDCCH(Physical Downlink Control Channel) CSS(Common Search Space) setのためのCORESETである、特徴1~11のいずれか1項に記載の基地局。
制限された帯域幅のケイパビリティをもつユーザ機器用の制御リソースセット(Control Resource Set:CORESET)の帯域幅に関する1ビットの情報を含むマスター情報ブロック(Master Information Block:MIB)を受信する通信処理部(243)と、
前記MIBに含まれる前記1ビットの情報を取得する情報取得部(241)と、
を備えるユーザ機器(200)。
基地局(100)であって、
ソースセルからターゲットセルへのユーザ機器(200)のハンドオーバのためのRRC(Radio Resource Control) Reconfigurationメッセージを取得する情報取得部(141)と、
前記RRC Reconfigurationメッセージを前記ユーザ機器へ送信する通信処理部(143)と、
を備え、
前記RRC Reconfigurationメッセージは、前記ターゲットセルにおける第1の制御リソースセット(Control Resource Set:CORESET)に関する第1のCORESET情報と、前記ターゲットセルにおける、制限された帯域幅のケイパビリティをもつユーザ機器用の第2のCORESETに関する第2のCORESET情報とを含む、
基地局。
前記第1のCORESET情報は、前記第1のCORESETの帯域幅を示し、
前記第2のCORESET情報は、前記第2のCORESETの帯域幅を示す、
特徴14に記載の基地局。
前記第1のCORESETの前記帯域幅は、24リソースブロック(Resource Block:RB)、48RB及び96RBのうちの1つであり、
前記第2のCORESETの前記帯域幅は、2以上の所定の帯域幅のうちの1つであり、
前記2以上の所定の帯域幅は、24RBよりも狭い所定の帯域幅を含む、
特徴15に記載の基地局。
前記第1のCORESET情報は、第1のcontrolResourceSetZeroであり、
前記第2のCORESET情報は、第2のcontrolResourceSetZeroである、
特徴14~16のいずれか1項に記載の基地局。
前記第1のCORESET及び前記第2のCORESETの各々は、Type0-PDCCH(Physical Downlink Control Channel) CSS(Common Search Space) setのためのCORESETである、特徴14~17のいずれか1項に記載の基地局。
ユーザ機器(200)であって、
ソースセルからターゲットセルへの前記ユーザ機器のハンドオーバのためのRRC(Radio Resource Control) Reconfigurationメッセージを基地局(100)から受信する通信処理部(243)、
を備え、
前記RRC Reconfigurationメッセージは、前記ターゲットセルにおける第1の制御リソースセット(Control Resource Set:CORESET)に関する第1のCORESET情報と、前記ターゲットセルにおける、制限された帯域幅のケイパビリティをもつユーザ機器用の第2のCORESETに関する第2のCORESET情報とを含み、
前記第1のCORESET情報又は前記第2のCORESET情報を取得する情報取得部(241)、
を備えるユーザ機器。
基地局(100B)であって、
ソースセルからターゲットセルへのユーザ機器(200)のハンドオーバのためのRRC(Radio Resource Control) Reconfigurationメッセージを取得する情報取得部(141)と、
前記RRC Reconfigurationメッセージを含むHandover Request Acknowledgeメッセージを前記ソースセルの基地局(100A)へ送信する通信処理部(145)と、
を備え、
前記RRC Reconfigurationメッセージは、前記ターゲットセルにおける第1の制御リソースセット(Control Resource Set:CORESET)に関する第1のCORESET情報と、前記ターゲットセルにおける、制限された帯域幅のケイパビリティをもつユーザ機器用の第2のCORESETに関する第2のCORESET情報とを含む、
基地局。
基地局(100)により行われる方法であって、
マスター情報ブロック(Master Information Block:MIB)を取得することと、
前記MIBを送信することと、
を含み、
前記MIBは、制限された帯域幅のケイパビリティをもつユーザ機器用の制御リソースセット(Control Resource Set:CORESET)の帯域幅に関する1ビットの情報を含む、
方法。
ユーザ機器(200)により行われる方法であって、
制限された帯域幅のケイパビリティをもつユーザ機器用の制御リソースセット(Control Resource Set:CORESET)の帯域幅に関する1ビットの情報を含むマスター情報ブロック(Master Information Block:MIB)を受信することと、
前記MIBに含まれる前記1ビットの情報を取得することと、
を含む方法。
基地局(100)により行われる方法であって、
ソースセルからターゲットセルへのユーザ機器(200)のハンドオーバのためのRRC(Radio Resource Control) Reconfigurationメッセージを取得することと、
前記RRC Reconfigurationメッセージを前記ユーザ機器へ送信することと、
を含み、
前記RRC Reconfigurationメッセージは、前記ターゲットセルにおける第1の制御リソースセット(Control Resource Set:CORESET)に関する第1のCORESET情報と、前記ターゲットセルにおける、制限された帯域幅のケイパビリティをもつユーザ機器用の第2のCORESETに関する第2のCORESET情報とを含む、
方法。
ユーザ機器(200)により行われる方法であって、
ソースセルからターゲットセルへの前記ユーザ機器のハンドオーバのためのRRC(Radio Resource Control) Reconfigurationメッセージを基地局(100)から受信すること、
を含み、
前記RRC Reconfigurationメッセージは、前記ターゲットセルにおける第1の制御リソースセット(Control Resource Set:CORESET)に関する第1のCORESET情報と、前記ターゲットセルにおける、制限された帯域幅のケイパビリティをもつユーザ機器用の第2のCORESETに関する第2のCORESET情報とを含み、
前記第1のCORESET情報又は前記第2のCORESET情報を取得すること、
をさらに含む方法。
基地局(100B)により行われる方法であって、
ソースセルからターゲットセルへのユーザ機器(200)のハンドオーバのためのRRC(Radio Resource Control) Reconfigurationメッセージを取得することと、
前記RRC Reconfigurationメッセージを含むHandover Request Acknowledgeメッセージを前記ソースセルの基地局(100A)へ送信することと、
を含み、
前記RRC Reconfigurationメッセージは、前記ターゲットセルにおける第1の制御リソースセット(Control Resource Set:CORESET)に関する第1のCORESET情報と、前記ターゲットセルにおける、制限された帯域幅のケイパビリティをもつユーザ機器用の第2のCORESETに関する第2のCORESET情報とを含む、
方法。
マスター情報ブロック(Master Information Block:MIB)を取得することと、
前記MIBを送信することと、
をコンピュータに実行させるためのプログラムであり、
前記MIBは、制限された帯域幅のケイパビリティをもつユーザ機器用の制御リソースセット(Control Resource Set:CORESET)の帯域幅に関する1ビットの情報を含む、
プログラム。
制限された帯域幅のケイパビリティをもつユーザ機器用の制御リソースセット(Control Resource Set:CORESET)の帯域幅に関する1ビットの情報を含むマスター情報ブロック(Master Information Block:MIB)を受信することと、
前記MIBに含まれる前記1ビットの情報を取得することと、
をコンピュータに実行させるためのプログラム。
ソースセルからターゲットセルへのユーザ機器(200)のハンドオーバのためのRRC(Radio Resource Control) Reconfigurationメッセージを取得することと、
前記RRC Reconfigurationメッセージを前記ユーザ機器へ送信することと、
をコンピュータに実行させるためのプログラムであり、
前記RRC Reconfigurationメッセージは、前記ターゲットセルにおける第1の制御リソースセット(Control Resource Set:CORESET)に関する第1のCORESET情報と、前記ターゲットセルにおける、制限された帯域幅のケイパビリティをもつユーザ機器用の第2のCORESETに関する第2のCORESET情報とを含む、
プログラム。
ソースセルからターゲットセルへのユーザ機器(200)のハンドオーバのためのRRC(Radio Resource Control) Reconfigurationメッセージを基地局(100)から受信すること、
をコンピュータに実行させるためのプログラムであり、
前記RRC Reconfigurationメッセージは、前記ターゲットセルにおける第1の制御リソースセット(Control Resource Set:CORESET)に関する第1のCORESET情報と、前記ターゲットセルにおける、制限された帯域幅のケイパビリティをもつユーザ機器用の第2のCORESETに関する第2のCORESET情報とを含み、
前記第1のCORESET情報又は前記第2のCORESET情報を取得すること、
をコンピュータに実行させるためのプログラム。
ソースセルからターゲットセルへのユーザ機器(200)のハンドオーバのためのRRC(Radio Resource Control) Reconfigurationメッセージを取得することと、
前記RRC Reconfigurationメッセージを含むHandover Request Acknowledgeメッセージを前記ソースセルの基地局(100A)へ送信することと、
をコンピュータに実行させるためのプログラムであり、
前記RRC Reconfigurationメッセージは、前記ターゲットセルにおける第1の制御リソースセット(Control Resource Set:CORESET)に関する第1のCORESET情報と、前記ターゲットセルにおける、制限された帯域幅のケイパビリティをもつユーザ機器用の第2のCORESETに関する第2のCORESET情報とを含む、
プログラム。
マスター情報ブロック(Master Information Block:MIB)を取得することと、
前記MIBを送信することと、
をコンピュータに実行させるためのプログラムを記録したコンピュータに読み取り可能な非遷移的実体的記録媒体であり、
前記MIBは、制限された帯域幅のケイパビリティをもつユーザ機器用の制御リソースセット(Control Resource Set:CORESET)の帯域幅に関する1ビットの情報を含む、
コンピュータに読み取り可能な非遷移的実体的記録媒体。
制限された帯域幅のケイパビリティをもつユーザ機器用の制御リソースセット(Control Resource Set:CORESET)の帯域幅に関する1ビットの情報を含むマスター情報ブロック(Master Information Block:MIB)を受信することと、
前記MIBに含まれる前記1ビットの情報を取得することと、
をコンピュータに実行させるためのプログラムを記録したコンピュータに読み取り可能な非遷移的実体的記録媒体。
ソースセルからターゲットセルへのユーザ機器(200)のハンドオーバのためのRRC(Radio Resource Control) Reconfigurationメッセージを取得することと、
前記RRC Reconfigurationメッセージを前記ユーザ機器へ送信することと、
をコンピュータに実行させるためのプログラムを記録したコンピュータに読み取り可能な非遷移的実体的記録媒体であり、
前記RRC Reconfigurationメッセージは、前記ターゲットセルにおける第1の制御リソースセット(Control Resource Set:CORESET)に関する第1のCORESET情報と、前記ターゲットセルにおける、制限された帯域幅のケイパビリティをもつユーザ機器用の第2のCORESETに関する第2のCORESET情報とを含む、
コンピュータに読み取り可能な非遷移的実体的記録媒体。
ソースセルからターゲットセルへのユーザ機器(200)のハンドオーバのためのRRC(Radio Resource Control) Reconfigurationメッセージを基地局(100)から受信すること、
をコンピュータに実行させるためのプログラムを記録したコンピュータに読み取り可能な非遷移的実体的記録媒体であり、
前記RRC Reconfigurationメッセージは、前記ターゲットセルにおける第1の制御リソースセット(Control Resource Set:CORESET)に関する第1のCORESET情報と、前記ターゲットセルにおける、制限された帯域幅のケイパビリティをもつユーザ機器用の第2のCORESETに関する第2のCORESET情報とを含み、
前記第1のCORESET情報又は前記第2のCORESET情報を取得すること、
をコンピュータに実行させるためのプログラムを記録したコンピュータに読み取り可能な非遷移的実体的記録媒体。
ソースセルからターゲットセルへのユーザ機器(200)のハンドオーバのためのRRC(Radio Resource Control) Reconfigurationメッセージを取得することと、
前記RRC Reconfigurationメッセージを含むHandover Request Acknowledgeメッセージを前記ソースセルの基地局(100A)へ送信することと、
をコンピュータに実行させるためのプログラムを記録したコンピュータに読み取り可能な非遷移的実体的記録媒体であり、
前記RRC Reconfigurationメッセージは、前記ターゲットセルにおける第1の制御リソースセット(Control Resource Set:CORESET)に関する第1のCORESET情報と、前記ターゲットセルにおける、制限された帯域幅のケイパビリティをもつユーザ機器用の第2のCORESETに関する第2のCORESET情報とを含む、
コンピュータに読み取り可能な非遷移的実体的記録媒体。
Claims (15)
- マスター情報ブロック(Master Information Block:MIB)を取得する情報取得部(141)と、
前記MIBを送信する通信処理部(143)と、
を備え、
前記MIBは、制限された帯域幅のケイパビリティをもつユーザ機器用の制御リソースセット(Control Resource Set:CORESET)の帯域幅に関する1ビットの情報を含む、
基地局(100)。 - 前記1ビットの情報は、前記CORESETの前記帯域幅を示すCORESET情報を含む追加のMIBが送信されるかを示す情報である、請求項1に記載の基地局。
- 前記追加のMIBは、制限された帯域幅のケイパビリティをもつユーザ機器用のMIBである、請求項2に記載の基地局。
- 前記情報取得部は、前記追加のMIBを取得し、
前記通信処理部は、前記追加のMIBを送信する、
請求項2又は3に記載の基地局。 - 前記通信処理部は、前記MIBを物理報知チャネル(Physical Broadcast Channel:PBCH)において送信し、前記追加のMIBを他の物理チャネルにおいて送信する、請求項4に記載の基地局。
- 前記他の物理チャネルは、前記PBCHが配置される周波数リソースに応じて決まる周波数リソースに配置される、請求項5に記載の基地局。
- 前記他の物理チャネルは、前記PBCHが配置される複数のリソースブロック(Resource Block:RB)のうちの1つ以上の所定のRBに配置される、請求項6に記載の基地局。
- 前記1ビットの情報は、前記CORESETの前記帯域幅を示すCORESET情報である、請求項1に記載の基地局。
- 前記1ビットの情報は、前記CORESETの多重パターン、シンボル数及びリソースブロックオフセットのうちの少なくとも1つをさらに示す、請求項8に記載の基地局。
- 前記CORESET情報は、前記CORESETの前記帯域幅として、2以上の所定の帯域幅のうちの1つを示し、
前記2以上の所定の帯域幅は、24リソースブロック(Resource Block:RB)よりも狭い所定の帯域幅を含む、
請求項2~9のいずれか1項に記載の基地局。 - 前記MIBは、他のCORESETに関する4ビットの情報をさらに含み、
前記4ビットの情報は、前記他のCORESETの帯域幅として、24RB、48RB又は96RBを示す、
請求項1~10のいずれか1項に記載の基地局。 - 前記CORESETは、Type0-PDCCH(Physical Downlink Control Channel) CSS(Common Search Space) setのためのCORESETである、請求項1~11のいずれか1項に記載の基地局。
- 制限された帯域幅のケイパビリティをもつユーザ機器用の制御リソースセット(Control Resource Set:CORESET)の帯域幅に関する1ビットの情報を含むマスター情報ブロック(Master Information Block:MIB)を受信する通信処理部(243)と、
前記MIBに含まれる前記1ビットの情報を取得する情報取得部(241)と、
を備えるユーザ機器(200)。 - 基地局(100)であって、
ソースセルからターゲットセルへのユーザ機器(200)のハンドオーバのためのRRC(Radio Resource Control) Reconfigurationメッセージを取得する情報取得部(141)と、
前記RRC Reconfigurationメッセージを前記ユーザ機器へ送信する通信処理部(143)と、
を備え、
前記RRC Reconfigurationメッセージは、前記ターゲットセルにおける第1の制御リソースセット(Control Resource Set:CORESET)に関する第1のCORESET情報と、前記ターゲットセルにおける、制限された帯域幅のケイパビリティをもつユーザ機器用の第2のCORESETに関する第2のCORESET情報とを含む、
基地局。 - ユーザ機器(200)であって、
ソースセルからターゲットセルへの前記ユーザ機器のハンドオーバのためのRRC(Radio Resource Control) Reconfigurationメッセージを基地局(100)から受信する通信処理部(243)、
を備え、
前記RRC Reconfigurationメッセージは、前記ターゲットセルにおける第1の制御リソースセット(Control Resource Set:CORESET)に関する第1のCORESET情報と、前記ターゲットセルにおける、制限された帯域幅のケイパビリティをもつユーザ機器用の第2のCORESETに関する第2のCORESET情報とを含み、
前記第1のCORESET情報又は前記第2のCORESET情報を取得する情報取得部(241)と、
を備えるユーザ機器。
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See also references of EP4247078A4 |
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EP4247078A4 (en) | 2024-04-17 |
JP2022076780A (ja) | 2022-05-20 |
CN116584137A (zh) | 2023-08-11 |
EP4247078A1 (en) | 2023-09-20 |
US20230276319A1 (en) | 2023-08-31 |
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