WO2022201475A1 - Station de base, système et procédé de notification d'informations - Google Patents

Station de base, système et procédé de notification d'informations Download PDF

Info

Publication number
WO2022201475A1
WO2022201475A1 PCT/JP2021/012732 JP2021012732W WO2022201475A1 WO 2022201475 A1 WO2022201475 A1 WO 2022201475A1 JP 2021012732 W JP2021012732 W JP 2021012732W WO 2022201475 A1 WO2022201475 A1 WO 2022201475A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
base station
information
scg
deactivation
Prior art date
Application number
PCT/JP2021/012732
Other languages
English (en)
Japanese (ja)
Inventor
眞人 谷口
皓平 原田
Original Assignee
株式会社Ｎｔｔドコモ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社Ｎｔｔドコモ filed Critical 株式会社Ｎｔｔドコモ
Priority to CN202180094564.4A priority Critical patent/CN116998202A/zh
Priority to PCT/JP2021/012732 priority patent/WO2022201475A1/fr
Publication of WO2022201475A1 publication Critical patent/WO2022201475A1/fr

Links

Images

Classifications

    • 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
    • H04W16/32—Hierarchical cell structures
    • 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
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections

Definitions

  • the present invention relates to base stations in wireless communication systems.
  • NR New Radio
  • 5G various radio technologies and network architectures are being studied in order to meet the requirements of realizing a throughput of 10 Gbps or more and keeping the delay in the radio section to 1 ms or less (for example, Non-Patent Document 1).
  • Non-Patent Document 2 the function of activating/deactivating the secondary cell group (Activation/Deactivation) in dual connectivity operation (for example, Non-Patent Document 2) is being considered with the main purpose of reducing the power consumption of the terminal.
  • an operation that is not performed when the secondary cell group is disabled is specified to reduce power consumption.
  • Network triggers and terminal triggers are being considered as triggers for deactivating secondary cell groups.
  • the secondary cell group may be activated/deactivated unintended by the network, increasing signaling and making it difficult to control from the network. there is a risk of becoming
  • the network instructs the terminal whether or not the terminal autonomous deactivation of the secondary cell group is permitted, and only the terminal that is instructed to permit autonomous deactivation of the secondary cell group. be done.
  • the conventional technology does not support signaling operations between nodes that configure dual connectivity.
  • the present invention has been made in view of the above points, and in a wireless communication system that performs dual connectivity, a technology that enables appropriate signaling between nodes in response to autonomous operation of terminals. intended to provide
  • a receiving unit that receives first information indicating that the terminal has autonomously deactivated a specific cell group in dual connectivity from the terminal; and a transmitting unit configured to transmit second information indicating that the terminal has autonomously deactivated the specific cell group to another base station configuring the dual connectivity.
  • a technique in a wireless communication system that performs dual connectivity, a technique is provided that enables appropriate signaling between nodes in response to autonomous operation of terminals.
  • FIG. 1 is a diagram for explaining an example (1) of a wireless communication system according to an embodiment of the present invention
  • FIG. FIG. 2 is a diagram for explaining example (2) of a wireless communication system according to an embodiment of the present invention
  • FIG. 10 is a diagram for explaining Example 1-1
  • FIG. 10 is a diagram for explaining Example 1-3
  • FIG. 10 is a diagram for explaining Example 2-1
  • FIG. 10 is a diagram for explaining Example 2-1
  • FIG. 10 is a diagram for explaining Example 2-1
  • FIG. 10 is a diagram for explaining Example 2-1
  • FIG. 10 is a diagram for explaining Example 2-1
  • FIG. 10 is a diagram for explaining Example 2-1
  • FIG. 10 is a diagram for explaining Example 2-1
  • FIG. 10 is a diagram for explaining Example 2-1
  • FIG. 10 is a diagram for explaining Example 2-1
  • FIG. 10 is a diagram for explaining Example 2-1
  • FIG. 10 is a diagram for explaining Example 2-1;
  • FIG. 10 is a diagram for explaining Example 2-1;
  • Example 10 is a diagram for explaining Example 2-2; It is a figure showing an example of functional composition of base station 10 in an embodiment of the invention.
  • 2 is a diagram showing an example of the functional configuration of terminal 20 according to the embodiment of the present invention;
  • FIG. 2 is a diagram showing an example of the functional configuration of terminal 20 according to the embodiment of the present invention;
  • FIG. It is a figure which shows an example of the hardware constitutions of the apparatus in embodiment of this invention.
  • existing technology may be used as appropriate.
  • the existing technology is, for example, existing NR or LTE, but is not limited to existing NR or LTE.
  • FIG. 1 is a diagram for explaining example (1) of a wireless communication system according to an embodiment of the present invention.
  • a wireless communication system according to an embodiment of the present invention includes a base station 10 and terminals 20, as shown in FIG. Although one base station 10 and one terminal 20 are shown in FIG. 1, this is an example and there may be more than one.
  • the base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20.
  • a physical resource of a radio signal is defined in the time domain and the frequency domain.
  • the time domain may be defined by the number of OFDM symbols, and the frequency domain may be defined by the number of subcarriers or resource blocks.
  • a TTI (Transmission Time Interval) in the time domain may be a slot, or a TTI may be a subframe.
  • the base station 10 can perform carrier aggregation in which multiple cells (multiple CCs (component carriers)) are bundled and communicated with the terminal 20 .
  • multiple CCs component carriers
  • carrier aggregation one PCell (primary cell) and one or more SCells (secondary cells) are used.
  • the base station 10 transmits a synchronization signal, system information, etc. to the terminal 20.
  • Synchronization signals are, for example, NR-PSS and NR-SSS.
  • System information is transmitted, for example, on NR-PBCH or PDSCH, and is also called broadcast information.
  • the base station 10 transmits control signals or data to the terminal 20 on DL (Downlink) and receives control signals or data from the terminal 20 on UL (Uplink).
  • control channels such as PUCCH and PDCCH
  • data what is transmitted on a shared channel such as PUSCH and PDSCH is called data.
  • the terminal 20 is a communication device having a wireless communication function, such as a smartphone, mobile phone, tablet, wearable terminal, or M2M (Machine-to-Machine) communication module. As shown in FIG. 1 , the terminal 20 receives control signals or data from the base station 10 on the DL and transmits control signals or data to the base station 10 on the UL, thereby performing various functions provided by the wireless communication system. Use communication services.
  • the terminal 20 may be called UE, and the base station 10 may be called gNB. Also, in dual connectivity, one base station 10 may be called a gNB and the other base station may be called an eNB.
  • FIG. 2 is a diagram for explaining example (2) of the wireless communication system according to the embodiment of the present invention.
  • FIG. 2 shows a configuration example of a wireless communication system when dual connectivity (DC) is performed.
  • a base station 10A serving as a master node (MN: Master Node) and a base station 10B serving as a secondary node (SN: Secondary Node) are provided.
  • the base station 10A and the base station 10B are connected to the core network 30 respectively.
  • Terminal 20 can communicate with both base station 10A and base station 10B.
  • the cell group provided by the MN base station 10A is called a master cell group (MCG), and the cell group provided by the SN base station 10B is called a secondary cell group (SCG). call.
  • MCG master cell group
  • SCG secondary cell group
  • an MCG is composed of one PCell and 0 or more SCells
  • an SCG is composed of one PSCell (Primary SCG Cell) and 0 or more SCells.
  • the dual connectivity applied in this embodiment may be a communication method using two communication standards, and any communication standards may be combined.
  • the combination may be any of LTE and LTE, NR and NR, NR and LTE, NR and 6G standard, or LTE and 6G standard.
  • either of the two may be applied to the MN or may be applied to the SN.
  • the MN may be NR and the SN may be LTE, or the SN may be LTE and the MN may be LTE.
  • dual connectivity may be a communication method using three or more communication standards, and may be called by other names different from dual connectivity.
  • the processing operations in the present embodiment are assumed to be executed with the system configuration shown in FIG. 2, but may be executed with a system configuration other than the system configuration shown in FIG.
  • a function to activate/deactivate a secondary cell group in dual connectivity operation is being considered with the main purpose of reducing the power consumption of terminals. For example, an operation that is not performed when the secondary cell group is disabled is specified to reduce power consumption.
  • PDCCH monitoring When the secondary cell group is enabled, PDCCH monitoring, RRM (Radio Resource Management) measurement, RLM (Radio Link Monitoring), beam failure detection/recovery, CSI-RS (Channel State Information--Reference Signal) measurement and reporting, timing advance setting, and SRS (Sounding Reference Signal) transmission are executed.
  • RRM Radio Resource Management
  • RLM Radio Link Monitoring
  • CSI-RS Channel State Information--Reference Signal
  • SRS Sounding Reference Signal
  • the secondary cell group is deactivated, for example, PDCCH monitoring and SRS transmission may not be performed.
  • RRM measurements are measurements related to mobility such as handover and PSCell change.
  • RLM is monitoring to detect DL loss of synchronization.
  • Beam failure detection/recovery is a function for the terminal 20 to detect and recover from beam deviance.
  • Timing advance is information for maintaining UL synchronization.
  • SCG activation may be requested by the MN, SN or UE.
  • RRC signaling between MN and UE or between MN and SN may be used for SCG activation or SCG deactivation.
  • a NW trigger and a terminal 20 trigger are being considered as triggers for deactivating the secondary cell group.
  • the terminal 20 transmits a request or assistance information to the NW, and the NW notifies the terminal 20 of the final SCG deactivation instruction.
  • the terminal 20 autonomously deactivates the SCG and notifies the NW of the deactivation.
  • the terminal 20 autonomously deactivates the SCG and notifies the NW of the deactivation.
  • the terminal 20 notifies the MN 10A that it has been deactivated.
  • MN 10A then notifies SN 10B that the SCG has been deactivated.
  • MN 10A When MN 10A notifies SN 10B that the SCG has been deactivated, it is possible to use, for example, the MN initiated SN modification procedure (Non-Patent Document 2).
  • MN initiated SN modification procedure Non-Patent Document 2
  • SN 10B can decide whether to accept or reject the request received from MN 10A. That is, SN 10B has the veto right.
  • terminal 20 will notify the NW that it has already been deactivated, so SN 10B should not reject the notification from MN 10A.
  • the conventional technology has a problem that the SN 10B cannot determine that the notification from the MN 10A should not be rejected. This is the same for notification from SN 10B to MN 10A.
  • terminal 20 autonomously performs SCG deactivation. However, if operations such as the timing of SCG deactivation are left to the implementation of the terminal, operations unintended by the operator may occur. For example, excessive deactivation may cause deterioration in communication quality, increased signaling, and the like.
  • this embodiment assumes that the NW notifies the terminal 20 of an instruction (flag) for controlling whether or not UE autonomous SCG deactivation is possible.
  • NW side that is, MN 10A or SN 10B
  • the NW side may not have the information for determining whether to permit or disallow terminal autonomous SCG deactivation.
  • Example 1 will be described as an example corresponding to the first problem
  • Example 2 will be described as an example corresponding to the second problem.
  • An example of the overall basic operation including
  • deactivation is mainly referred to as "deactivation”. Further, in the following description, as an example, deactivation of an activated SCG is described, but the same operation is possible when activating a deactivated SCG.
  • the target of deactivation is the SCG, but this is an example.
  • the deactivation target may be a specific cell group other than the SCG.
  • a basic operation example in this embodiment will be described with reference to FIG.
  • negotiation takes place between MN 10A and SN 10B. Specifically, for example, transmission and reception of information necessary for determining whether or not UE autonomous SCG deactivation is possible are performed between MN 10A and SN 10B.
  • MN 10A determines whether UE autonomous SCG deactivation for terminal 20 is possible based on its own information and information received from SN 10B, and transmits a flag based on the determination result to terminal 20 in S102.
  • the terminal 20 is communicating with the MCG and SCG, and the content of the flag is "UE autonomous SCG deactivation allowed". Note that the above flag may be sent to the terminal 20 together with a message for setting the SCG.
  • the terminal 20 that received the flag in S102 determines that UE autonomous SCG deactivation is possible.
  • the terminal 20 autonomously deactivates the SCG, for example, because communication using the SCG is no longer necessary.
  • the terminal 20 notifies the MN 10A that the SCG has been deactivated.
  • the MN 10A notifies the SN 10B that the terminal 20 has deactivated the SCG. In this embodiment, SN 10B does not reject this notification because it can judge that it cannot reject it.
  • the MN 10A notifies the terminal 20 of the flag, but this is an example, and the SN 10B may notify the terminal 20 of the flag. Also, the terminal 20 may notify the SN 10B that the SCG has been deactivated.
  • Example 1 and Example 2 will be described below.
  • Example 1 and Example 2 can be combined and executed.
  • the first and second embodiments may be executed independently.
  • Example 1 in order to solve the first problem described above, the fact that the terminal 20 has already performed SCG deactivation is notified between MN 10A and SN 10B instead of a request for SCG deactivation.
  • the nodes (MN 10A, SN 10B) that have received the notification can determine that the notification is not a request but an information notification that SCG deactivation has already been performed, and thus can determine that it is not subject to acceptance/rejection.
  • Example 1-1 in the MN initiated SN modification procedure, the terminal 20 notifies that the SCG deactivation has already been performed.
  • the MN initiated SN modification procedure is a procedure for changing resource settings (eg addition, correction, release of SCG resources) on the SN 10B side of the terminal 20.
  • FIG. 4 shows an example of the MN initiated SN modification procedure.
  • FIG. 4 is " Figure 10.3.2-1: SN Modification procedure-MN initiated" described in Non-Patent Document 2.
  • Example 1-1 is not limited to that shown in FIG. MN initiated SN modification procedures other than those shown in FIG. 4 may be applied.
  • FIG. 4 is an example given for explanation.
  • Example 1-1 in the procedure shown in FIG. 4, information notification is performed by, for example, one of the following methods (1) to (4).
  • the MN 10A has received a notification that the SCG has been deactivated from the terminal 20 before step 1 in FIG. 4 is started.
  • MN 10A for example, in step 1 in FIG. 4, in the SN Modification Request message, a specific IE (information element) indicating UE-Triggered SCG deactivation (terminal 20 autonomously performed SCG deactivation) and send an SN Modification Request message including the IE to SN 10B.
  • a specific IE information element
  • UE-Triggered SCG deactivation terminal 20 autonomously performed SCG deactivation
  • MN 10A includes a specific value indicating UE-Triggered SCG deactivation (that terminal 20 autonomously performed SCG deactivation) in the SN Modification Request message, and sends an SN Modification Request message including the value to SN 10B. may be sent to
  • SN 10B can receive notification of UE-Triggered SCG deactivation by SN Modification Request message, so it can determine not to reject it and, for example, execute processing such as releasing SCG resources for terminal 20 on SN 10B side. can.
  • SN 10B can receive notification of UE-Triggered SCG deactivation by SN Modification Request message, so it can determine not to reject it and, for example, execute processing such as releasing SCG resources for terminal 20 on SN 10B side. can.
  • MN 10A for example, in step 1 in FIG. 4, includes a specific IE (information element) indicating that the message cannot be rejected in the SN Modification Request message, and sends the SN Modification Request message including the IE. Send to SN10B.
  • IE information element
  • MN 10A may include a specific value indicating that the message cannot be rejected in the SN Modification Request message, and transmit the SN Modification Request message including the value to SN 10B.
  • SN 10B determines not to reject the SN Modification Request message, and executes processing such as releasing SCG resources for terminal 20 on the SN 10B side, for example.
  • MN 10A for example, in step 1 in FIG. 4, includes a specific cause indicating that rejection is not possible in the SN Modification Request message, and transmits the SN Modification Request message including the cause to SN 10B. do.
  • SN 10B determines not to reject the SN Modification Request message, and executes processing such as releasing SCG resources for terminal 20 on the SN 10B side, for example.
  • Example 1-2 When MN 10A receives the notification that the SCG has been deactivated from terminal 20, MN 10A notifies UE-Triggered SCG deactivation to SN 10B using a new message. Upon receiving the UE-Triggered SCG deactivation, SN 10B determines that this message cannot be rejected, and, for example, returns a response message (Acknowledge) confirming that the UE-Triggered SCG deactivation has been performed to MN 10A.
  • SN 10B determines that this message cannot be rejected, and, for example, returns a response message (Acknowledge) confirming that the UE-Triggered SCG deactivation has been performed to MN 10A.
  • a round-trip (Class 1) procedure as described above may be used, or a one-way (Class 2) procedure in which the SN 10B that receives the UE-Triggered SCG deactivation does not return a response message may be used.
  • SN 10B may change (release, etc.) the setting of SCG resources for terminal 20 on the SN 10B side in response to receiving a new message containing UE-Triggered SCG deactivation. Also, after the procedure of the embodiment 1-2, the MN initiated SN modification procedure shown in FIG. 4 is started, in which the setting change (release, etc.) of the SCG resource for the terminal 20 on the SN 10B side may be performed.
  • the notification of the new message in embodiment 1-2 may be performed in existing procedures such as the MN initiated SN modification procedure.
  • the above new message may be sent from MN 10A to SN 10B immediately before or after step 1 (SN Modification Request) in FIG.
  • Example 1-3 Next, Example 1-3 will be described with reference to FIG.
  • the terminal 20 autonomously performs SCG deactivation.
  • the terminal 20 notifies the SN 10B that it autonomously performed the SCG deactivation.
  • SN 10B notifies MN 10A that terminal 20 autonomously performed SCG deactivation.
  • the message used in the notification of S203 may be, for example, a message for starting SCG deactivation from SN 10B, or a new message other than the message for starting SCG deactivation.
  • the message used in the notification of S203 includes a specific IE indicating UE-Triggered SCG deactivation, a specific value indicating UE-Triggered SCG deactivation, and Any of a specific Cause indicating UE-Triggered SCG deactivation, a specific IE indicating that rejection is not possible, or a specific value indicating that rejection is not possible may be included.
  • a response message may be returned from MN 10A to SN 10B in response to S203.
  • the nodes (MN 10A, SN 10B) that have received the notification can decide not to reject the procedure. Therefore, the signaling that can be caused by rejecting the procedure can be reduced. In addition, it is possible to prevent state inconsistency between the terminal 20 and the NW, which may occur due to refusal of the procedure.
  • Example 2 for solving the second problem will be described.
  • the detailed description of the problem below is not a description of the problem of the conventional technology, but a consideration that is a prerequisite for the operation of the second embodiment, and is included in the technology of the second embodiment.
  • the UE model can be identified by Masked IMEISV.
  • the setting information held by the base station is, for example, information indicating the following settings.
  • the communication pattern is, for example, the actual value of communication, Expected UE Behavior, and the like.
  • the communication status is, for example, L2 status, SgNB Activity Notification, or the like.
  • MN 10A or SN 10B determines whether or not UE autonomous SCG deactivation is possible, for example, the above information is necessary. Therefore, considering whether or not each of the above information can be obtained by MN/SN in the current standard specifications, the following results are obtained. As follows. ⁇ indicates that it can be obtained, ⁇ indicates that it can be obtained only in a specific case or only partly, and ⁇ indicates that it cannot be obtained.
  • Capabilities MN ⁇ (NR Capability is generally not referred to during EN-DC) SN: ⁇ (E-UTRA Capabilities are generally not referenced during EN-DC)
  • Model MN ⁇ (Masked IMEISV IE) SN: ⁇ (Masked IMEISV IE)
  • Communication status MN ⁇ (The actual communication status can be grasped only by the bearer that hosts PDCP itself) SN: ⁇ (The actual communication status can only be grasped by the bearer that hosts the PDCP itself)
  • Issue 1 (a, c, e): For criteria (UE capabilities, config, communication status) with different information obtained between nodes, one node cannot consider the information of the other node.
  • Example 2-1 will be explained from the viewpoint of Problem 1
  • Example 2-2 will be explained from the viewpoint of Problem 2.
  • Example 2-1 and Example 2-2 may be combined.
  • Example 2-1 UE autonomous SCG deactivation permission/non-permission “proposal” is notified between MN 10A and SN 10B.
  • the node that receives the proposal compares the content of the proposal with its own information and determines whether it is actually permitted or not.
  • Proposal is, for example, a proposal to permit or disallow UE autonomous SCG deactivation.
  • MN 10A permits UE autonomous SCG deactivation to terminal 20 when its own proposal is “permit” and the proposal received from SN 10B is also “permit”. MN 10A disallows UE autonomous SCG deactivation for terminal 20 when at least one of its own proposal and the proposal received from SN 10B is "disallowed”.
  • SN 10B permits UE autonomous SCG deactivation to terminal 20 when its own proposal is “permitted” and the proposal received from MN 10A is also “permitted.” SN 10B disallows UE autonomous SCG deactivation for terminal 20 when at least one of its own proposal and the proposal received from MN 10A is "disallowed”.
  • UE autonomous SCG deactivation permission/non-permission between MN 10A and SN 10B instead of or in addition to notifying UE autonomous SCG deactivation permission/non-permission “suggestion” between MN 10A and SN 10B (eg, any one or more of (a) to (f) described above) may be notified.
  • MN 10A determines permission/non-permission based on its own information and information received from SN 10B, and notifies terminal 20 of the determination result.
  • SN 10B may determine permission/non-permission based on information it owns and information received from MN 10A, and notify terminal 20 of the result of the determination.
  • Example 2-1-1 In Example 2-1-1, in the SN Addition Procedure procedure, the MN 10A and the SN 10B perform proposal notification and the like.
  • FIG. 6 An example of the SN Addition Procedure procedure is shown in FIG. FIG. 6 is " Figure 10.2.2-1: SN Addition procedure" in Non-Patent Document 2. Using the SN Addition Procedure procedure shown in FIG. 6 in Example 2-1-1 is an example. Procedures other than the SN Addition Procedure procedure shown in FIG. 6 may be used.
  • Example 2-1-1 The operation procedure in Example 2-1-1 will be described with reference to FIG.
  • MN 10A judges whether UE autonomous SCG deactivation of terminal 20 is possible, for example, based on its own information, and uses the judgment result as a proposal for UE autonomous SCG deactivation. In S301, MN 10A notifies SN 10B of the proposal by SN Addition Request.
  • SN 10B which has received the proposal from MN 10A, determines whether UE autonomous SCG deactivation is possible and, in S302, replies to MN 10A with SN Addition Request Acknowledge whether UE autonomous SCG deactivation is possible.
  • the MN 10A notifies the terminal 20 of the UE autonomous SCG deactivation enable/disable flag through RRC reconfiguration.
  • Fig. 8 shows another example.
  • SN 10B which has received the UE autonomous SCG deactivation propriety proposal from MN 10A, notifies the terminal 20 of the UE autonomous SCG deactivation propriety flag in S402.
  • Example 2-1-2 the MN-initiated SN Modification procedure as shown in FIG. 4 is used to notify the UE autonomous SCG deactivation proposal, etc.
  • FIGS. 7 and 8 the procedure in Example 2-1-2 is obtained by replacing "Addition" with "Modification".
  • Example 2-1-3 Next, Example 2-1-3 will be described.
  • the MN 10A and SN 10B perform notification of a proposal and the like.
  • FIG. 9 An example of the SN-initiated SN Modification procedure is shown in FIG. FIG. 9 is "Figure 10.3.1-2: SN Modification procedure-SN initiated with MN involvement" in Non-Patent Document 2.
  • SN-initiated SN Modification procedure shown in FIG. 9 in Example 2-1-3 is an example. Procedures other than the SN-initiated SN Modification procedure shown in FIG. 9 may be used.
  • Example 2-1-3 The operation procedure in Example 2-1-3 will be described with reference to FIG.
  • SN 10B determines whether UE autonomous SCG deactivation of terminal 20 is possible based on, for example, information it owns, and uses the result of the determination as a proposal for UE autonomous SCG deactivation.
  • SN 10B notifies MN 10A of the proposal with SN Modification Required.
  • MN 10A Upon receiving the proposal from SN 10B, MN 10A determines whether UE autonomous SCG deactivation is possible, and in S502, notifies terminal 20 of the UE autonomous SCG deactivation possible/impossible flag through RRC reconfiguration. Note that S511 shown in FIG. 10 (and S611 in FIG. 11) is used in a procedure example to be described later.
  • SN 10B determines whether UE autonomous SCG deactivation of terminal 20 is possible based on, for example, information it owns, and uses the result of the determination as a proposal for UE autonomous SCG deactivation.
  • SN 10B notifies MN 10A of the proposal with SN Modification Required.
  • the SN 10B notifies the terminal 20 of the UE autonomous SCG deactivation enable/disable flag through RRC reconfiguration.
  • MN 10A may not adopt the proposal from SN 10B. In that case, MN 10A may Refuse the SN Modification procedure. At this time, in S511 of FIG. 10 and S611 of FIG. 11, the MN 10A may notify the SN 10B of the cause that the UE autonomous SCG deactivation proposal is not accepted. In the example of FIG. 11, SN 10B notifies terminal 20 of the UE autonomous SCG deactivation flag by RRC reconfiguration only when its own proposal is not rejected by MN 10A (when Refuse is not received). good.
  • S511 in FIG. 10 and S611 in FIG. 11 are used for purposes other than Refuse.
  • SN 10B notifies MN 10A of its own proposal with SN Modification Required.
  • the MN 10A determines whether or not the UE autonomous SCG deactivation is possible, and notifies the SN 10B of whether or not the UE autonomous SCG deactivation is possible in S511. Also, in S502, the MN 10A notifies the terminal 20 of a UE autonomous SCG deactivation enable/disable flag through RRC reconfiguration.
  • SN 10B notifies MN 10A of its own proposal with SN Modification Required.
  • the MN 10A determines whether or not the UE autonomous SCG deactivation is possible, and in S611, notifies the SN 10B of whether or not the UE autonomous SCG deactivation is possible.
  • the SN 10B notifies the terminal 20 of the UE autonomous SCG deactivation enable/disable flag through RRC reconfiguration.
  • MN ⁇ -SN SgNB Modification required - UE autonomous SCG deactivation propriety proposal to notify MN - RRC Reconf (notify UE, set SCG (NR RRC)) 2.
  • MN->SN SgNB Modification request - UE autonomous SCG deactivation availability (proposal from MN's point of view) 3.
  • MN ⁇ -SN SgNB Modification request ack -RRC Reconf (including setting of SCG (NR RRC) to be notified to UE, UE autonomous SCG deactivation to UE) 4.
  • Example 2-1-4 RRC Reconf - Set MCG - Set SCG (received from SN, including UE autonomous SCG deactivation flag to UE) ⁇ Example 2-1-4> Next, Example 2-1-4 will be described. In Example 2-1-4, MN->UE and SN->UE notify whether or not UE autonomous SCG deactivation is possible, and the UE determines whether or not UE autonomous SCG deactivation is possible based on this information.
  • Fig. 12 shows the procedure of Example 2-1-4.
  • each of MN 10A and SN 10B transmits to terminal 20 a proposal as to whether or not UE autonomous SCG deactivation is possible.
  • the terminal 20 determines whether UE autonomous SCG deactivation is possible. For example, when both the proposal from MN 10A and the proposal from SN 10B are "possible", the terminal 20 determines that UE autonomous SCG deactivation is possible, and at least the proposal from MN 10A and the proposal from SN 10B If one is "impossible", it is determined that the UE autonomous SCG deactivation is impossible.
  • terminal 20 determines that UE autonomous SCG deactivation is impossible, and is "possible”, it may be determined that UE autonomous SCG deactivation is possible.
  • Example 2-1 it is possible to determine whether or not UE autonomous SCG deactivation is possible by combining information that only one of MN 10A and SN 10B can have, so that an appropriate permission/non-permission flag can be notified to terminal 20.
  • FIG. 2-1 it is possible to determine whether or not UE autonomous SCG deactivation is possible by combining information that only one of MN 10A and SN 10B can have, so that an appropriate permission/non-permission flag can be notified to terminal 20.
  • Example 2-2 Next, an embodiment 2-2 that solves the above-mentioned problem 2 (information not possessed by the RAN (base station) cannot be considered) will be described.
  • Example 2-1 and Example 2-2 are combined is described, but Example 2-2 may be carried out independently of Example 2-1.
  • a core NW side device eg AMF, MME
  • subscriber information etc. or able to access subscriber information etc.
  • a base station MN or SN, or MN and SN both
  • the information that serves as the judgment criteria for judging whether UE autonomous SCG deactivation is possible is notified.
  • Example 2-2 An example of the procedure in Example 2-2 will be described with reference to FIG.
  • the core NW 100 (for example, AMF or MME) notifies the MN 10A of information that serves as a criterion for determination.
  • the core NW 100 notifies the SN 10B of information that serves as a criterion for determination. Note that only one of S801 and S802 may be performed.
  • Example 2-1 the negotiation described in Example 2-1 is executed between MN10A and SN10B. Note that if the MN 10A or SN 10B can independently determine whether or not UE autonomous SCG deactivation is possible based on the determination criteria information from the core NW, this negotiation may not be performed.
  • the MN 10A notifies the terminal 20 of the UE autonomous SCG deactivation flag.
  • SN 10B notifies terminal 20 of a UE autonomous SCG deactivation flag.
  • Any procedure/message may be used to transmit the criterion information from the core NW 100 to the MN 10A/SN 10B, but for example, the following procedure/message may be used.
  • UE Context Management procedure (Initial Context Setup Request, UE Context Modification Request) ⁇ Mobility-related procedures (HO Request, Path Switch Request Ack) ⁇ DL NAS Transport - New message
  • (1) and (2) show examples of IE value patterns that serve as criteria information to be included in the message notified from the core NW 100 to the MN 10A/SN 10B.
  • the base station 10, the terminal 20, and the device 30 on the core NW side include functions for executing the above-described embodiments. However, each of the base station 10, the terminal 20, and the device 30 on the core NW side may be provided with only the function proposed by one of the embodiments.
  • FIG. 14 is a diagram showing an example of the functional configuration of the base station 10.
  • the base station 10 has a transmitting section 110, a receiving section 120, a setting section 130, and a control section 140.
  • the functional configuration shown in FIG. 9 is merely an example. As long as the operation according to the embodiment of the present invention can be executed, the functional division and the names of the functional units may be arbitrary.
  • the transmitting unit 110 and the receiving unit 120 may be called a communication unit.
  • a base station 10 can be either an MN or an SN.
  • the transmission unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and wirelessly transmitting the signal.
  • the receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, higher layer information from the received signals.
  • the transmitting unit 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, DL data, etc. to the terminal 20 .
  • the transmitting section 110 also has a function of transmitting information to other base stations, and the receiving section 120 also has a function of receiving information from other base stations.
  • the setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in the storage device, and reads them from the storage device as necessary.
  • the control unit 140 performs overall control of the base station 10 including control related to signal transmission/reception, for example. It should be noted that the functional unit related to signal transmission in control unit 140 may be included in transmitting unit 110 , and the functional unit related to signal reception in control unit 140 may be included in receiving unit 120 . Also, the transmitting unit 110 and the receiving unit 120 may be called a transmitter and a receiver, respectively.
  • FIG. 15 is a diagram showing an example of the functional configuration of the terminal 20.
  • the terminal 20 has a transmitting section 210, a receiving section 220, a setting section 230, and a control section 240.
  • the functional configuration shown in FIG. 15 is merely an example. As long as the operation according to the embodiment of the present invention can be executed, the functional division and the names of the functional units may be arbitrary.
  • the transmitting unit 210 and the receiving unit 220 may be called a communication unit.
  • the transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
  • the receiving unit 220 wirelessly receives various signals and acquires a higher layer signal from the received physical layer signal. Also, the transmitting unit 210 transmits HARQ-ACK, and the receiving unit 220 receives the setting information and the like described in the embodiment.
  • the setting unit 230 stores various types of setting information received from the base station 10 by the receiving unit 220 in the storage device, and reads them from the storage device as necessary.
  • the setting unit 230 also stores preset setting information.
  • the control unit 240 performs overall control of the terminal 20 including control related to signal transmission/reception. Also, the control unit 240 includes a function to autonomously perform SCG deactivation. It should be noted that the functional unit related to signal transmission in control unit 240 may be included in transmitting unit 210 , and the functional unit related to signal reception in control unit 240 may be included in receiving unit 220 . Also, the transmitting section 210 and the receiving section 220 may be called a transmitter and a receiver, respectively.
  • FIG. 16 is a diagram showing an example of the functional configuration of the device 30 on the core NW side.
  • the device 30 on the core NW side has a transmitting section 310, a receiving section 320, a setting section 330, and a control section 340.
  • FIG. The functional configuration shown in FIG. 15 is merely an example. As long as the operation according to the embodiment of the present invention can be executed, the functional division and the names of the functional units may be arbitrary.
  • the transmitting unit 310 and the receiving unit 320 may be called a communication unit.
  • the transmitting unit 310 transmits to the base station 10 the criteria information for determining whether UE autonomous SCG deactivation is possible.
  • the receiving unit 320 acquires criteria information for determining whether UE autonomous SCG deactivation is possible from other devices as necessary.
  • the setting unit 330 stores various types of setting information in a storage device, and reads them from the storage device as needed. In addition, the setting unit 330 may store determination criteria information for whether or not UE autonomous SCG deactivation is possible.
  • the control unit 340 controls the entire device 30 . Also, the transmitting unit 310 and the receiving unit 320 may be called a transmitter and a receiver, respectively.
  • each functional block may be implemented using one device that is physically or logically coupled, or directly or indirectly using two or more devices that are physically or logically separated (e.g. , wired, wireless, etc.) and may be implemented using these multiple devices.
  • a functional block may be implemented by combining software in the one device or the plurality of devices.
  • Functions include judging, determining, determining, calculating, calculating, processing, deriving, investigating, searching, checking, receiving, transmitting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, assuming, Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc. can't
  • a functional block (component) that performs transmission is called a transmitting unit or transmitter.
  • the implementation method is not particularly limited.
  • the base station 10, the terminal 20, etc. may function as a computer that performs processing of the wireless communication method of the present disclosure.
  • FIG. 17 is a diagram illustrating an example of hardware configurations of the base station 10, the terminal 20, and the device 30 on the core NW side according to an embodiment of the present disclosure.
  • the base station 10, the terminal 20, and the device 30 on the core NW side described above include a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. may be configured as a computer device including
  • the term "apparatus” can be read as a circuit, device, unit, or the like.
  • the hardware configuration of the base station 10 and terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured without some devices.
  • Each function of the base station 10 and the terminal 20 is performed by the processor 1001 performing calculations and controlling communication by the communication device 1004 by loading predetermined software (programs) onto hardware such as the processor 1001 and the storage device 1002. or by controlling at least one of data reading and writing in the storage device 1002 and the auxiliary storage device 1003 .
  • the processor 1001 for example, operates an operating system and controls the entire computer.
  • the processor 1001 may be configured with a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, registers, and the like.
  • CPU central processing unit
  • the control unit 140 , the control unit 240 and the like described above may be implemented by the processor 1001 .
  • the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and executes various processes according to them.
  • programs program codes
  • software modules software modules
  • data etc.
  • the program a program that causes a computer to execute at least part of the operations described in the above embodiments is used.
  • control unit 140 of base station 10 shown in FIG. 14 may be implemented by a control program stored in storage device 1002 and operated by processor 1001 .
  • the control unit 240 of the terminal 20 shown in FIG. 15 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001 .
  • FIG. Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via an electric communication line.
  • the storage device 1002 is a computer-readable recording medium, for example, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. may be configured.
  • the storage device 1002 may also be called a register, cache, main memory (main storage device), or the like.
  • the storage device 1002 can store executable programs (program code), software modules, etc. for implementing a communication method according to an embodiment of the present disclosure.
  • the auxiliary storage device 1003 is a computer-readable recording medium, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, a Blu -ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, and/or the like.
  • the storage medium described above may be, for example, a database, server, or other suitable medium including at least one of storage device 1002 and secondary storage device 1003 .
  • the communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 includes a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., in order to realize at least one of, for example, frequency division duplex (FDD) and time division duplex (TDD).
  • FDD frequency division duplex
  • TDD time division duplex
  • the transceiver may be physically or logically separate implementations for the transmitter and receiver.
  • the input device 1005 is an input device (for example, keyboard, mouse, microphone, switch, button, sensor, etc.) that receives input from the outside.
  • the output device 1006 is an output device (for example, display, speaker, LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated (for example, a touch panel).
  • Each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using different buses between devices.
  • the base station 10, the terminal 20, and the device 30 on the core NW side include a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), an FPGA (Field Programmable Gate Array), etc., and part or all of each functional block may be realized by the hardware.
  • DSP digital signal processor
  • ASIC Application Specific Integrated Circuit
  • PLD Programmable Logic Device
  • FPGA Field Programmable Gate Array
  • processor 1001 may be implemented using at least one of these pieces of hardware.
  • Example 1 A receiving unit that receives first information indicating that the terminal has autonomously deactivated a specific cell group in dual connectivity from the terminal; A base station that transmits second information indicating that the terminal has autonomously deactivated the specific cell group to another base station that configures the dual connectivity.
  • (Section 2) 2.
  • (Section 3) 2.
  • (Section 4) 4.
  • a first base station comprising a transmission unit that transmits information indicating that the terminal has autonomously deactivated a specific cell group in dual connectivity to a second base station that configures the dual connectivity;
  • a system comprising: the second base station comprising a receiving unit that receives the information; and a control unit that determines not to reject the information.
  • (Section 6) A step of receiving from the terminal first information indicating that the terminal has autonomously deactivated a specific cell group in dual connectivity; A step of transmitting second information indicating that the terminal has autonomously deactivated the specific cell group to another base station that configures the dual connectivity, information executed by the base station. Notification method.
  • Any of items 1 to 6 provides a technology that enables appropriate signaling between nodes in response to autonomous operation of terminals in a wireless communication system that performs dual connectivity. . Also, according to the second and third terms, information can be appropriately notified between the MN and the SN. Clause 4 makes it possible to know explicitly that it cannot be refused.
  • (Section 1) Transmission that transmits information used for determining whether to allow the terminal to autonomously deactivate a specific cell group in dual connectivity to other base stations that configure the dual connectivity
  • a base station comprising: (Section 2) If the information is not rejected by the other base station after the information is transmitted to the other base station, the transmitting unit allows autonomous deactivation of the specific cell group. 2. The base station according to claim 1, which notifies the terminal whether or not to perform.
  • (Section 3) Information used for determining whether to allow the terminal to autonomously deactivate a specific cell group in dual connectivity is received from another base station that configures the dual connectivity.
  • a receiver A base station that uses information received from the other base station to determine whether or not to allow the terminal to autonomously deactivate the specific cell group.
  • (Section 4) a receiver that receives information from a core network that is used to determine whether to allow the terminal to autonomously deactivate a particular cell group; A base station that uses information received from the core network to determine whether to allow the terminal to autonomously deactivate the specific cell group.
  • (Section 5) Transmission of information used to determine whether to allow the terminal to autonomously deactivate a specific cell group in dual connectivity to the second base station that configures the dual connectivity a first base station comprising: A second base station comprising a control unit that uses the information received from the first base station to determine whether to permit the terminal to autonomously deactivate the specific cell group.
  • a system comprising and .
  • a technology that enables acquisition of information necessary to determine whether the terminal can operate autonomously is provided. be. Also, according to the second term, the flag can be sent to the terminal after confirming that it will not be rejected.
  • the operations of a plurality of functional units may be physically performed by one component, or the operations of one functional unit may be physically performed by a plurality of components.
  • the processing order may be changed as long as there is no contradiction.
  • the base station 10, the terminal 20, and the device 30 on the core NW side are explained using functional block diagrams, but such devices are realized by hardware, software, or a combination thereof.
  • the software operated by the processor of the base station 10 according to the embodiment of the present invention and the software operated by the processor of the terminal 20 according to the embodiment of the present invention are stored in random access memory (RAM), flash memory, read-only memory, respectively. (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other appropriate storage medium.
  • notification of information is not limited to the aspects/embodiments described in the present disclosure, and may be performed using other methods.
  • notification of information includes physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, It may be implemented by broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof.
  • RRC signaling may also be called an RRC message, for example, RRC It may be a connection setup (RRC Connection Setup) message, an RRC connection reconfiguration message, or the like.
  • Each aspect/embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system) system), FRA (Future Radio Access), NR (new Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark) )), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other suitable systems and extended It may be applied to at least one of the next generation systems. Also, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G, etc.).
  • a specific operation performed by the base station 10 in this specification may be performed by its upper node in some cases.
  • various operations performed for communication with terminal 20 may be performed by base station 10 and other network nodes other than base station 10 (eg, but not limited to MME or S-GW).
  • base station 10 e.g, but not limited to MME or S-GW
  • the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW).
  • Information, signals, etc. described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It may be input and output via multiple network nodes.
  • Input/output information may be stored in a specific location (for example, memory) or managed using a management table. Input/output information and the like can be overwritten, updated, or appended. The output information and the like may be deleted. The entered information and the like may be transmitted to another device.
  • the determination in the present disclosure may be performed by a value represented by 1 bit (0 or 1), may be performed by a boolean value (Boolean: true or false), or may be performed by comparing numerical values (e.g. , comparison with a predetermined value).
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise, includes instructions, instruction sets, code, code segments, program code, programs, subprograms, and software modules. , applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • the software uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.) to website, Wired and/or wireless technologies are included within the definition of transmission medium when sent from a server or other remote source.
  • wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. may be represented by a combination of
  • the channel and/or symbols may be signaling.
  • a signal may also be a message.
  • a component carrier may also be called a carrier frequency, a cell, a frequency carrier, or the like.
  • system and “network” used in this disclosure are used interchangeably.
  • information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values from a predetermined value, or may be expressed using other corresponding information.
  • radio resources may be indexed.
  • base station BS
  • radio base station base station
  • base station fixed station
  • NodeB nodeB
  • eNodeB eNodeB
  • gNodeB gNodeB
  • a base station can accommodate one or more (eg, three) cells.
  • the overall coverage area of the base station can be partitioned into multiple smaller areas, each smaller area being associated with a base station subsystem (e.g., an indoor small base station (RRH:
  • RRH indoor small base station
  • the term "cell” or “sector” refers to part or all of the coverage area of at least one of the base stations and base station subsystems serving communication services in this coverage.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station is defined by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless It may also be called a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
  • At least one of the base station and mobile station may be called a transmitting device, a receiving device, a communication device, or the like.
  • At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, or the like.
  • the mobile object may be a vehicle (e.g., car, airplane, etc.), an unmanned mobile object (e.g., drone, self-driving car, etc.), or a robot (manned or unmanned ).
  • at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations.
  • at least one of the base station and mobile station may be an IoT (Internet of Things) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read as a user terminal.
  • communication between a base station and a user terminal is replaced with communication between a plurality of terminals 20 (for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.)
  • the terminal 20 may have the functions of the base station 10 described above.
  • words such as "up” and “down” may be replaced with words corresponding to inter-terminal communication (for example, "side”).
  • uplink channels, downlink channels, etc. may be read as side channels.
  • user terminals in the present disclosure may be read as base stations.
  • the base station may have the functions that the above-described user terminal has.
  • determining and “determining” used in this disclosure may encompass a wide variety of actions.
  • “Judgement” and “determination” are, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (eg, lookup in a table, database, or other data structure), ascertaining as “judged” or “determined”, and the like.
  • "judgment” and “determination” are used for receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, access (accessing) (for example, accessing data in memory) may include deeming that a "judgment” or “decision” has been made.
  • judgment and “decision” are considered to be “judgment” and “decision” by resolving, selecting, choosing, establishing, comparing, etc. can contain.
  • judgment and “decision” may include considering that some action is “judgment” and “decision”.
  • judgment (decision) may be read as “assuming”, “expecting”, “considering”, or the like.
  • connection means any direct or indirect connection or coupling between two or more elements, It can include the presence of one or more intermediate elements between two elements being “connected” or “coupled.” Couplings or connections between elements may be physical, logical, or a combination thereof. For example, “connection” may be read as "access”.
  • two elements are defined using at least one of one or more wires, cables, and printed electrical connections and, as some non-limiting and non-exhaustive examples, in the radio frequency domain. , electromagnetic energy having wavelengths in the microwave and optical (both visible and invisible) regions, and the like.
  • the reference signal can also be abbreviated as RS (Reference Signal), and may also be called Pilot depending on the applicable standard.
  • RS Reference Signal
  • any reference to elements using the "first,” “second,” etc. designations used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, reference to a first and second element does not imply that only two elements can be employed or that the first element must precede the second element in any way.
  • a radio frame may consist of one or more frames in the time domain. Each frame or frames in the time domain may be referred to as a subframe. A subframe may also consist of one or more slots in the time domain. A subframe may be of a fixed length of time (eg, 1 ms) independent of numerology.
  • a numerology may be a communication parameter that applies to the transmission and/or reception of a signal or channel. Numerology, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, transceiver It may indicate at least one of certain filtering operations performed in the frequency domain, certain windowing operations performed by the transceiver in the time domain, and/or the like.
  • SCS subcarrier spacing
  • TTI transmission time interval
  • transceiver It may indicate at least one of certain filtering operations performed in the frequency domain, certain windowing operations performed by the transceiver in the time domain, and/or the like.
  • a slot may consist of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time domain.
  • a slot may be a unit of time based on numerology.
  • a slot may contain multiple mini-slots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be referred to as a subslot. A minislot may consist of fewer symbols than a slot.
  • PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (or PUSCH) mapping type A.
  • PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.
  • Radio frames, subframes, slots, minislots and symbols all represent time units when transmitting signals. Radio frames, subframes, slots, minislots and symbols may be referred to by other corresponding designations.
  • one subframe may be called a Transmission Time Interval (TTI)
  • TTI Transmission Time Interval
  • TTI Transmission Time Interval
  • TTI Transmission Time Interval
  • one slot or one minislot may be called a TTI.
  • TTI Transmission Time Interval
  • 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 Note that the unit representing the TTI may be called a slot, mini-slot, or the like instead of a subframe.
  • TTI refers to, for example, the minimum scheduling time unit in wireless communication.
  • the base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each terminal 20) to each terminal 20 on a TTI basis.
  • radio resources frequency bandwidth, transmission power, etc. that can be used by each terminal 20
  • TTI is not limited to this.
  • a TTI may be a transmission time unit such as a channel-encoded data packet (transport block), code block, or codeword, or may be a processing unit such as scheduling and link adaptation. Note that when a TTI is given, the time interval (for example, the number of symbols) in which transport blocks, code blocks, codewords, etc. are actually mapped may be shorter than the TTI.
  • one or more TTIs may be the minimum scheduling time unit. Also, the number of slots (the 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 called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, or the like.
  • a TTI that is shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, and the like.
  • the long TTI (e.g., normal TTI, subframe, etc.) may be replaced with a TTI having a time length exceeding 1 ms
  • the short TTI e.g., shortened TTI, etc.
  • a TTI having the above TTI length may be read instead.
  • a resource block is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
  • the number of subcarriers included in the RB may be the same regardless of the numerology, and may be 12, for example.
  • the number of subcarriers included in an RB may be determined based on numerology.
  • the time domain of an RB may include one or more symbols and may be 1 slot, 1 minislot, 1 subframe, or 1 TTI long.
  • One TTI, one subframe, etc. may each consist of one or more resource blocks.
  • One or more RBs are physical resource blocks (PRBs), sub-carrier groups (SCGs), resource element groups (REGs), PRB pairs, RB pairs, etc. may be called.
  • PRBs physical resource blocks
  • SCGs sub-carrier groups
  • REGs resource element groups
  • PRB pairs RB pairs, etc. may be called.
  • a resource block may be composed of one or more resource elements (RE: Resource Element).
  • RE Resource Element
  • 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
  • a bandwidth part (which may also be called a bandwidth part) may represent a subset of contiguous common resource blocks (RBs) for a certain numerology on a certain carrier.
  • the common RB may be identified by an RB index based on the common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • the BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP).
  • UL BWP UL BWP
  • DL BWP DL BWP
  • One or more BWPs may be configured for terminal 20 within one carrier.
  • At least one of the configured BWPs may be active, and the terminal 20 may not expect to transmit or receive a given signal/channel outside the active BWP.
  • “cell”, “carrier”, etc. in the present disclosure may be read as "BWP”.
  • radio frames, subframes, slots, minislots and symbols described above are only examples.
  • the number of subframes contained in a radio frame the number of slots per subframe or radio frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, the number of Configurations such as the number of subcarriers, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc.
  • CP cyclic prefix
  • a and B are different may mean “A and B are different from each other.”
  • the term may also mean that "A and B are different from C”.
  • Terms such as “separate,” “coupled,” etc. may also be interpreted in the same manner as “different.”
  • notification of predetermined information is not limited to being performed explicitly, but may be performed implicitly (for example, not notifying the predetermined information). good too.
  • base station 110 transmitting unit 120 receiving unit 130 setting unit 140 control unit 20 terminal 210 transmitting unit 220 receiving unit 230 setting unit 240 control unit 310 transmitting unit 320 receiving unit 330 setting unit 340 control unit 30 core network, device 1001 processor 1002 storage Device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Cette station de base est pourvue d'une unité de réception qui, à partir d'un terminal, reçoit des premières informations qui indiquent que ledit terminal a désactivé de manière autonome un groupe de cellules spécifiques en connectivité double ; et une unité de transmission qui, à une autre station de base qui configure la double conductivité susmentionnée, transmet des secondes informations qui indiquent que le terminal a désactivé de manière autonome le groupe de cellules spécifiques susmentionné.
PCT/JP2021/012732 2021-03-25 2021-03-25 Station de base, système et procédé de notification d'informations WO2022201475A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202180094564.4A CN116998202A (zh) 2021-03-25 2021-03-25 基站、系统以及信息通知方法
PCT/JP2021/012732 WO2022201475A1 (fr) 2021-03-25 2021-03-25 Station de base, système et procédé de notification d'informations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2021/012732 WO2022201475A1 (fr) 2021-03-25 2021-03-25 Station de base, système et procédé de notification d'informations

Publications (1)

Publication Number Publication Date
WO2022201475A1 true WO2022201475A1 (fr) 2022-09-29

Family

ID=83396651

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/012732 WO2022201475A1 (fr) 2021-03-25 2021-03-25 Station de base, système et procédé de notification d'informations

Country Status (2)

Country Link
CN (1) CN116998202A (fr)
WO (1) WO2022201475A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015216685A (ja) * 2008-11-25 2015-12-03 インターデイジタル パテント ホールディングス インコーポレイテッド 複数のアップリンクキャリアおよび複数のダウンリンクキャリアを利用するための方法および装置
JP6409231B2 (ja) * 2013-07-19 2018-10-24 シャープ株式会社 端末装置、基地局装置、通信システム、制御方法および集積回路

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015216685A (ja) * 2008-11-25 2015-12-03 インターデイジタル パテント ホールディングス インコーポレイテッド 複数のアップリンクキャリアおよび複数のダウンリンクキャリアを利用するための方法および装置
JP6409231B2 (ja) * 2013-07-19 2018-10-24 シャープ株式会社 端末装置、基地局装置、通信システム、制御方法および集積回路

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ETSI MCC: "Report of 3GPP TSG RAN2#111-e meeting, Online", 3GPP DRAFT; R2-2102242, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), 21 January 2021 (2021-01-21), XP052170904 *

Also Published As

Publication number Publication date
CN116998202A (zh) 2023-11-03

Similar Documents

Publication Publication Date Title
JP7285853B2 (ja) 端末、基地局、通信システム及び通信方法
US20220394528A1 (en) Radio base station and terminal
WO2020166021A1 (fr) Dispositif d'utilisateur et dispositif de station de base
JP2023016940A (ja) 端末、無線通信システム及び無線通信方法
WO2022168767A1 (fr) Station de base sans fil, système et procédé de communication sans fil
WO2022097755A1 (fr) Terminal et station de base sans fil
CN113424617A (zh) 用户装置以及基站装置
WO2022195778A1 (fr) Terminal, station de base et procédé d'émission
WO2022085158A1 (fr) Terminal et station de base sans fil
US20240129818A1 (en) Radio base station and terminal
JP7386250B2 (ja) 端末、基地局、通信方法、及びシステム
JP7339356B2 (ja) 端末、通信システム、及び通信方法
WO2022201475A1 (fr) Station de base, système et procédé de notification d'informations
WO2022201476A1 (fr) Station de base et système
WO2022185501A1 (fr) Terminal et procédé de communication
WO2022190334A1 (fr) Terminal et procédé de communication
WO2022185502A1 (fr) Terminal et procédé de communication
WO2022190335A1 (fr) Terminal et procédé de communication
WO2023276011A1 (fr) Terminal et procédé de communication
WO2022220071A1 (fr) Terminal et procédé de communication sans fil
WO2023276010A1 (fr) Terminal et procédé de communication
WO2023017589A1 (fr) Terminal et procédé de communication
WO2022239244A1 (fr) Station de base sans fil, terminal et procédé de communication sans fil
WO2022215230A1 (fr) Terminal et procédé de communication sans fil
WO2023022150A1 (fr) Terminal, système de communication sans fil et procédé de communication sans fil

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: 21933080

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 202180094564.4

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21933080

Country of ref document: EP

Kind code of ref document: A1