WO2023014183A1 - 차세대 이동통신 시스템에서 페이징을 위한 확장된 불연속 수신에 관한 방법 및 장치 - Google Patents
차세대 이동통신 시스템에서 페이징을 위한 확장된 불연속 수신에 관한 방법 및 장치 Download PDFInfo
- Publication number
- WO2023014183A1 WO2023014183A1 PCT/KR2022/011686 KR2022011686W WO2023014183A1 WO 2023014183 A1 WO2023014183 A1 WO 2023014183A1 KR 2022011686 W KR2022011686 W KR 2022011686W WO 2023014183 A1 WO2023014183 A1 WO 2023014183A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ptw
- paging
- frame
- ran
- edrx
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/005—Transmission of information for alerting of incoming communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/02—Arrangements for increasing efficiency of notification or paging channel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower
- H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower using a pre-established activity schedule, e.g. traffic indication frame
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower
- H04W52/0219—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower where the power saving management affects multiple terminals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
- H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal where the received signal is a power saving command
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
- H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
- H04W52/028—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present disclosure relates to a mobile communication system, and relates to the operation of a terminal, a base station, and a core network.
- the 5G communication system or pre-5G communication system is being called a system after a 4G network (Beyond 4G Network) communication system or an LTE system (Post LTE).
- the 5G communication system is being considered for implementation in a mmWave band (eg, a 60 gigabyte (60 GHz) band).
- advanced coding modulation Advanced Coding Modulation: ACM
- FQAM Hybrid FSK and QAM Modulation
- SWSC Simple Window Superposition Coding
- advanced access technologies FBMC (Filter Bank Multi Carrier), NOMA (non-orthogonal multiple access), SCMA (sparse code multiple access), and the like are being developed.
- IoT Internet of Things
- M2M Machine to machine
- MTC Machine Type Communication
- IoT Intelligent IT (Information Technology) services that create new values in human life by collecting and analyzing data generated from connected objects
- IoT can be applied to fields such as smart home, smart building, smart city, smart car or connected car, smart grid, health care, smart home appliances, and advanced medical service through convergence and combination of existing IT technology and various industries. there is.
- technologies such as sensor network, machine to machine (M2M), and machine type communication (MTC) are implemented by techniques such as beamforming, MIMO, and array antenna, which are 5G communication technologies.
- M2M machine to machine
- MTC machine type communication
- the application of the cloud radio access network (cloud RAN) as the big data processing technology described above can be said to be an example of convergence of 5G technology and IoT technology.
- An embodiment of the present disclosure may provide a method and apparatus capable of effectively providing a service in a wireless communication system.
- a method of operating a terminal in a wireless communication system disclosed as a technical means for achieving the above-described technical problem includes establishing a radio resource control (RRC) connection with a camp-on cell; In an RRC connected mode, receiving a first extended discontinuous reception (eDRX) parameter for core network (CN) paging from a core network; Receiving a second eDRX parameter for radio access network (RAN) paging from a base station; Transitioning to RRC standby mode or RRC inactive mode; Calculating a length of a first paging time window (PTW) and a length of a second PTW based on the identification information of the terminal, the first eDRX parameter, and the second eDRX parameter; Determining a paging monitoring period based on at least one of an RRC mode of the terminal, information of a currently monitored frame, information of a first PTW, or information of a second PTW; and performing paging monitoring based on the determined period.
- RRC radio resource
- a terminal operating in a wireless communication system disclosed as a technical means for achieving the above-described technical problem may include a transceiver and a processor connected to the transceiver.
- the processor establishes an RRC connection with a camp-on cell, receives a first eDRX parameter for CN paging from the core network through a transceiver in an RRC connection mode, and from a base station through a transceiver for RAN paging
- Receiving the second eDRX parameter transitioning to RRC standby mode or RRC inactive mode, calculating the length of the first PTW and the length of the second PTW based on the identification information of the terminal, the first eDRX parameter, and the second eDRX parameter,
- a paging monitoring period may be determined based on at least one of the RRC mode of the terminal, information of a currently monitored frame, information of the first PTW, or information of the second PTW, and paging monitoring may be performed based on the determined period
- FIG. 1A is a diagram illustrating the structure of a next-generation mobile communication system according to an embodiment of the present disclosure.
- FIG. 1B is a diagram illustrating a radio access state transition in a next-generation mobile communication system according to an embodiment of the present disclosure.
- 1C is a diagram illustrating an operation in which a base station (or network) broadcasts a paging occasion and a paging message according to an embodiment of the present disclosure.
- 1D is a diagram illustrating a CN paging reception procedure of a standby mode terminal according to an embodiment of the present disclosure.
- 1e is a diagram illustrating a RAN paging reception procedure of an inactive mode terminal according to an embodiment of the present disclosure.
- 1f is a diagram illustrating a paging procedure using eDRX in LTE, according to an embodiment of the present disclosure.
- 1g is a diagram illustrating a procedure for a terminal to determine a paging monitoring period in LTE according to an embodiment of the present disclosure.
- 1H is a diagram illustrating a paging procedure using separate eDRX for CN paging and RAN paging, respectively, according to an embodiment of the present disclosure.
- 1i is a diagram illustrating a procedure for determining a paging monitoring period by a terminal according to an embodiment of the present disclosure.
- 1J is a diagram illustrating a terminal device according to an embodiment of the present disclosure.
- 1K is a diagram illustrating a base station apparatus according to an embodiment of the present disclosure.
- each block of the process flow chart diagrams and combinations of the flow chart diagrams can be performed by computer program instructions.
- These computer program instructions may be embodied in a processor of a general purpose computer, special purpose computer, or other programmable data processing equipment, so that the instructions executed by the processor of the computer or other programmable data processing equipment are described in the flowchart block(s). It creates means to perform functions.
- These computer program instructions may also be stored in a computer usable or computer readable memory that can be directed to a computer or other programmable data processing equipment to implement functionality in a particular way, such that the computer usable or computer readable memory
- the instructions stored in are also capable of producing an article of manufacture containing instruction means that perform the functions described in the flowchart block(s).
- the computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operational steps are performed on the computer or other programmable data processing equipment to create a computer-executed process to generate computer or other programmable data processing equipment. Instructions for performing processing equipment may also provide steps for performing the functions described in the flowchart block(s).
- each block may represent a module, segment or portion of code that includes one or more executable instructions for executing specified logical function(s). It should also be noted that in some alternative embodiments it is possible for the functions mentioned in the blocks to occur out of order. For example, two blocks shown in succession may in fact be executed substantially concurrently, or the blocks may sometimes be executed in reverse order depending on their function.
- ' ⁇ unit' used in the present disclosure means software or a hardware component such as a field programmable gate array (FPGA) or an application-specific integrated circuit (ASIC), and ' ⁇ unit' refers to certain roles. can be done However, ' ⁇ part' is not limited to software or hardware. ' ⁇ bu' may be configured to be in an addressable storage medium and may be configured to reproduce one or more processors. In one embodiment, ' ⁇ unit' refers to components such as software components, object-oriented software components, class components, and task components, processes, functions, properties, procedures, may include subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables.
- FPGA field programmable gate array
- ASIC application-specific integrated circuit
- components and ' ⁇ units' may be combined into smaller numbers of components and ' ⁇ units' or further separated into additional components and ' ⁇ units'.
- components and ' ⁇ units' may be implemented to play one or more CPUs in a device or a secure multimedia card.
- connection node a term referring to network entities, a term referring to messages, a term referring to an interface between network objects, and various types of identification information. Referring terms and the like are illustrated for convenience of description. Accordingly, the present disclosure is not limited to the terms described below, and other terms referring to objects having equivalent technical meanings may be used.
- eNB may be used interchangeably with gNB for convenience of description. That is, a base station described as an eNB may indicate a gNB. Also, the term terminal may refer to cell phones, NB-IoT devices, sensors, as well as other wireless communication devices.
- a base station is a subject that performs resource allocation of a terminal, and may be at least one of a gNode B, an eNode B, a Node B, a base station (BS), a wireless access unit, a base station controller, or a node on a network.
- the terminal may include a user equipment (UE), a mobile station (MS), a cellular phone, a smart phone, a computer, or a multimedia system capable of performing communication functions.
- UE user equipment
- MS mobile station
- cellular phone a smart phone
- computer or a multimedia system capable of performing communication functions.
- multimedia system capable of performing communication functions.
- the present disclosure is applicable to 3GPP NR (5th generation mobile communication standard).
- the present disclosure provides intelligent services (e.g., smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, security and safety related services) based on 5G communication technology and IoT related technology. etc.) can be applied.
- the wireless communication system has moved away from providing voice-oriented services in the early days and, for example, 3GPP's High Speed Packet Access (HSPA), LTE (Long Term Evolution or E-UTRA (Evolved Universal Terrestrial Radio Access)), LTE-Advanced (LTE-A), LTE-Pro, 3GPP2's High Rate Packet Data (HRPD), UMB (Ultra Mobile Broadband), and IEEE's 802.16e, a broadband wireless network that provides high-speed, high-quality packet data services. evolving into a communication system.
- HSPA High Speed Packet Access
- LTE Long Term Evolution or E-UTRA (Evolved Universal Terrestrial Radio Access)
- LTE-A LTE-Advanced
- LTE-Pro LTE-Pro
- HRPD High Rate Packet Data
- UMB Ultra Mobile Broadband
- IEEE's 802.16e a broadband wireless network that provides high-speed, high-quality packet data services. evolving into a communication system.
- an Orthogonal Frequency Division Multiplexing (OFDM) method is employed in downlink (DL) and SC-FDMA (Single Carrier Frequency Division Multiplexing Access) in uplink (UL).
- OFDM Orthogonal Frequency Division Multiplexing
- DL downlink
- SC-FDMA Single Carrier Frequency Division Multiplexing Access
- Uplink refers to a radio link in which a terminal (UE: User Equipment or MS: Mobile Station) transmits data or control signals to a base station (eNode B or BS: Base Station)
- eNode B or BS Base Station
- downlink refers to a radio link in which a base station transmits data or control signals to a terminal.
- the multiple access method as described above distinguishes data or control information of each user by allocating and operating time-frequency resources to carry data or control information for each user so that they do not overlap each other, that is, so that orthogonality is established. .
- Enhanced Mobile Broadband eMBB
- massive Machine Type Communication mMTC
- Ultra Reliability Low Latency Communication URLLC
- the embodiment of the present invention will be described below using LTE, LTE-A, LTE Pro or 5G (or NR, next-generation mobile communication) systems as examples, but the present invention can also be applied to other communication systems having similar technical backgrounds or channel types. An embodiment of may be applied. In addition, the embodiments of the present invention can be applied to other communication systems through some modification within a range that does not greatly deviate from the scope of the present invention as determined by a person with skillful technical knowledge.
- a method for operating a terminal in a wireless communication system disclosed as a technical means for achieving the above-described technical problem includes performing an RRC connection procedure with a camp-on cell, in a radio resource control (RRC) connection mode, a core network Alternatively, receiving a message including configuration information of eDRX from a base station, transitioning to standby mode or inactive mode, calculating the length of a paging time window (PTW) based on identification information of a terminal and eDRX configuration information; Determining whether the currently monitored frame corresponds to a frame within the PTW that is repeated every preset cycle, if it is determined that the currently monitored frame corresponds to a frame within the PTW, among the values set as the UE-specific cycle and the values set as the default DRX cycle
- the method may include determining the smallest value as a paging monitoring period, and performing paging monitoring based on the determined period.
- FIG. 1A is a diagram illustrating the structure of a next-generation mobile communication system according to an embodiment of the present disclosure.
- a radio access network of a next-generation mobile communication system includes a next-generation base station (gNB: New Radio Node B) 1a-10 and a radio core network (New Radio Core Network). there is.
- the radio core network may include an Access Management Function (AMF) 1a-05, and is not limited to the above example.
- AMF Access Management Function
- a user terminal (NR UE: New Radio User Equipment) 1a-15 may access an external network through the gNB 1a-10 and the AMF 1a-05.
- gNBs 1a-10 may correspond to evolved Node Bs (eNBs) of an existing Long Term Evolution (LTE) system.
- the gNB (1a-10) can be connected (1a-20) with the NR UE (1a-15) through a radio channel, and provides superior service to the NR UE (1a-15) than the existing Node B can do it
- a device that performs scheduling by collecting status information such as buffer status, available transmission power status, and channel status of UEs is required.
- 1a-10) may be in charge.
- One gNB (1a-10) can typically control a plurality of cells. In order to implement high-speed data transmission compared to the existing LTE, it may have a maximum bandwidth or higher, and a beamforming technology may be additionally used using Orthogonal Frequency Division Multiplexing (OFDM) as a radio access technology.
- OFDM Orthogonal Frequency Division Multiplexing
- the NR gNB (1a-10) determines a modulation scheme and a channel coding rate according to the channel condition of the terminal Adaptive Modulation & Coding (AMC) method can be applied.
- the AMF (1a-05) can perform functions such as mobility support, bearer setup, and QoS setup.
- the AMF (1a-05) is a device in charge of various control functions as well as a mobility management function for a terminal, and can be connected to a plurality of base stations.
- the next-generation mobile communication system can be linked with the existing LTE system, and the AMF (1a-05) can be connected to the Mobility Management Entity (MME) (1a-25) through a network interface.
- the MME 1a-25 may be connected to the existing eNB 1a-30.
- a UE supporting LTE-NR Dual Connectivity can transmit and receive data while maintaining a connection 1a-35 to the eNB 1a-30 as well as the gNB 1a-10.
- FIG. 1B is a diagram illustrating a radio access state transition in a next-generation mobile communication system according to an embodiment of the present disclosure.
- a UE may have three radio access states (Radio Resource Control (RRC) states).
- the connected mode (RRC_CONNECTED) (1b-05) may indicate that the terminal (UE) is in a radio connection state capable of transmitting and receiving data.
- the idle mode (RRC_IDLE) 1b-30 may indicate that the terminal (UE) is in a radio connection state monitoring whether or not paging is transmitted to it.
- the connected mode (1b-05) and the standby mode (1b-30) are wireless access states that can also be applied to the LTE system, and the detailed description is the same as that of the LTE system.
- an inactive mode (RRC_INACTIVE) (1b-15) may be newly applied in addition to the connected mode (1b-05) and the standby mode (1b-30).
- the newly defined RRC_INACTIVE radio access state may correspond to an inactive radio access state, an INACTIVE mode, an inactive mode, and the like.
- the UE context is maintained in the base station and the terminal (UE), and RAN (Radio Access Network) based paging can be supported.
- the characteristics of the inactive mode (1b-15) radio access state are as follows.
- the UE AS context is stored in at least one gNB and the UE;
- NR RAN i.e., RAN paging
- - RAN-based notification area is managed by NR RAN;
- - NR RAN knows the RAN-based notification area which the UE belongs to
- the inactive mode (1b-15) may be transitioned to the connected mode (1b-05) or the standby mode (1b-30) through a specific procedure.
- operation 1b-10 it can be converted from inactive mode (1b-15) to connected mode (1b-05) according to the resume process, and connected mode (1b-05) through the release procedure including suspend setting information. 05) to the inactive mode (1b-15).
- one or more RRC messages may be transmitted and received between the terminal and the base station, and the above-described operation 1b-10 may consist of one or more detailed steps.
- the inactive mode 1b-15 may be converted to the standby mode 1b-30 through a release procedure after resume.
- switching between the connected mode 1b-05 and the standby mode 1b-30 may be performed according to a typical LTE technique.
- switching between the connected mode (1b-05) and the standby mode (1b-30) may be made through an establishment or release procedure.
- 1C is a diagram illustrating an operation in which a base station (or network) broadcasts a paging occasion and a paging message according to an embodiment of the present disclosure.
- a 5G or Next Generation Radio Access Network (NG-RAN) based on NR is composed of NG-RAN nodes, where the NG-RAN nodes may mean gNBs.
- the gNB may provide NR user plane (UP) and control plane (CP) protocol termination to the UE.
- gNBs are connected through an NG interface for 5GC (5G Core), and more specifically, to AMF (Access and Mobility Management Function) by NG-C (NG-Control) interface and NG-U (NG-User) interface It is connected to UPF (User Plane Function) by In a 5G (NR or New radio) wireless communication system, a terminal may use discontinuous reception (DRX) to reduce power consumption in RRC_IDLE or RRC_INACTIVE mode.
- DRX discontinuous reception
- the UE does not always monitor the physical downlink control channel (PDCCH), but periodically (e.g., The PDCCH can be monitored only for a short period of time (every DRX cycle).
- the paging message 1c-10 may be transmitted through a physical downlink shared channel (PDSCH). If there is a paging message (1c-10) in the PDSCH, the PDCCH may be indicated by a Paging Radio Network Temporary Identifier (P-RNTI).
- P-RNTI Paging Radio Network Temporary Identifier
- a P-RNTI may be common to all UEs.
- UE Identity eg, System Architecture Evolution (SAE) Temporary Mobile Subscription Identifier (S-TMSI) for UEs in RRC_IDLE state or Inactive Radio Network Temporary Identifier (I-RNTI) for UEs in RRC_INACTIVE state
- SAE System Architecture Evolution
- SI-RNTI Inactive Radio Network Temporary Identifier
- UE Identity eg, System Architecture Evolution (SAE) Temporary Mobile Subscription Identifier (S-TMSI) for UEs in RRC_IDLE state or Inactive Radio Network Temporary Identifier (I-RNTI) for UEs in RRC_INACTIVE state
- SAE System Architecture Evolution
- SI-RNTI Inactive Radio Network Temporary Identifier
- SI System information update and emergency notification are included in Downlink Control Information (DCI), and a PDCCH carrying DCI may be indicated as P-RNTI.
- DCI Downlink Control Information
- a PDCCH carrying DCI may be indicated as P-RNTI.
- RRC_IDLE or RRC_INACTIVE mode the UE can monitor one paging occasion (PO) (1c-05) per DRX cycle.
- RRC_IDLE or RRC_INACTIVE mode the UE can monitor the PO in the initial DL Downlink Bandwidth Part (BWP).
- BWP Bandwidth Part
- the UE In the RRC connected state, the UE can monitor one or more POs to receive SI update notifications and receive emergency notifications.
- the UE can monitor all POs in the paging DRX cycle, and can monitor at least one PO in the SI modification period.
- the UE can monitor the PO in active DL BWP.
- PO is a set of S PDCCH monitoring occasions for paging, where 'S' may mean the number of SSB (Synchronization Signal and PBCH (Physical Broadcast Channel) blocks) transmitted in the cell.
- the UE may first determine a paging frame (PF) and then determine a PO for the determined PF.
- PF paging frame
- One PF may be a radio frame (10 ms).
- the method of determining PF and PO is as follows.
- i_s floor(UE_ID/N) mod Ns.
- - T is DRX cycle of the UE.
- T is determined by the shortest of the UE specific DRX value configured by RRC, UE specific DRX value configured by NAS, and a default DRX value broadcast in system information.
- T is determined by the shortest of UE specific DRX value configured by NAS, and a default DRX value broadcast in system information. If UE specific DRX is not configured by upper layers (i.e. NAS), the default value is applied.
- Ns, nAndPagingFrameOffset, and the length of default DRX Cycle are signaled in SIB1.
- the PDCCH monitoring occasions for paging are determined based on paging search space configuration (paging-SearchSpace) signaled by gNB.
- paging-SearchSpace paging search space configuration
- the PDCCH monitoring time point for paging is the same as for RMSI (see clause 13 in TS 38.213).
- Ns is either 1 or 2.
- Ns 1, there is only a single PO starting from the first PDCCH monitoring time point for paging in PF.
- the UE monitors the (i_s + 1)th PO.
- the PDCCH monitoring time point for paging is determined based on the paging search space configuration (paging-SearchSpace) signaled by the gNB. In the case of PDCCH monitoring for paging that does not overlap with UL symbols (determined according to tdd-UL-DL-ConfigurationCommon), numbers are sequentially numbered from 0 from the first PDCCH monitoring time point for paging in PF.
- the gNB may signal the parameter firstPDCCH-MonitoringOccasionOfPO for each PO corresponding to the PF.
- the (i_s + 1)th PO is a set of 'S' consecutive PDCCH monitoring times for paging, starting from the PDCCH monitoring timing number indicated by firstPDCCH-MonitoringOccasionOfPO. (That is, the (i_s + 1)th value of the firstPDCCH-MonitoringOccasionOfPO parameter) or the (i_s + 1)th PO is the 'S' continuous PDCCH for paging starting from the monitoring time of the (i_s*S)th PDCCH for paging. It is a set of monitoring points.
- 'S' is the number of actually transmitted SSBs determined according to the parameter ssb-PositionsInBurst signaled in SystemInformationBlock1 received from the gNB.
- Parameter first-PDCCH-MonitoringOccasionOfPO is signaled in SIB1 for paging in initial DL BWP.
- the parameter first-PDCCH-MonitoringOccasionOfPO is signaled in the corresponding BWP configuration.
- the PDCCH indicated by P-RNTI may deliver information according to DCI format 1_0.
- the following information may represent information transmitted in DCI format 1_0 using a cyclic redundancy check (CRC) scrambled with P-RNTI.
- CRC cyclic redundancy check
- Time domain resource assignment - 4 bits as defined in Subclause 5.1.2.1 of [6, TS38.214]. If only the short message is carried, this bit field is reserved.
- Table 1 below shows Short Message indicators.
- Bit field Short Message indicator 00 Reserved 01 Only scheduling information for Paging is present in the DCI 10 Only short message is present in the DCI 11 Both scheduling information for Paging and short message are present in the DCI
- Bit 1 is the most significant bit.
- Bit Short Message One systemInfoModification If set to 1: indication of a BCCH modification other than SIB6, SIB7 and SIB8.
- etwsAndCmasIndication If set to 1: indication of an ETWS primary notification and/or an ETWS secondary notification and/or a CMAS notification.
- the terminal can detect PDCCH transmission from the gNB to monitor the PO (1c-05), and through this, the Short Message indicator can be known, and through this, whether or not there is a paging message can be determined. . If it is determined through the short message indicator that there is a paging message, a PDSCH (eg, paging message) 1c-10 can be received.
- a PDSCH eg, paging message
- the paging message format is shown in Table 3.
- One paging message includes a list with PagingRecord as an entry, and each entry may include a ue-Identity for indicating which terminal has paging. If the UE finds a PagingRecord identical to its own UE identity (eg, S-TMSI or I-RNTI) in the list, it can start transitioning to the RRC connected mode.
- PagingRecord identical to its own UE identity (eg, S-TMSI or I-RNTI) in the list, it can start transitioning to the RRC connected mode.
- 'CN-initiated paging' or 'CN paging' it indicates that the CN (Core Network) or AMF (Access and Mobility Management Function) or MME (Mobility Management Entity) initiates paging
- 'RAN-initiated paging' indicates a case where the RAN (base station or gNB or eNB) initiates paging.
- a UE in idle mode monitors a paging channel to receive CN paging.
- the terminal in the inactive mode monitors a paging channel to receive RAN paging as well as CN paging. Meanwhile, terminals do not need to continuously monitor the paging channel.
- UEs may be required to monitor the paging channel only during a paging occasion (PO) once in a DRX cycle defined in TS 38.304.
- the paging DRX cycle can be configured by the network:
- a default cycle (or default CN paging cycle) can be broadcast through system information.
- a UE specific cycle (or UE specific CN paging cycle) can be set through NAS signaling.
- a UE specific cycle (or UE specific RAN paging cycle or RAN paging cycle) may be set through RRC signaling.
- the terminal may use the smallest value among DRX cycles applicable (ie, set) according to the RRC mode as a paging monitoring cycle. That is, the idle mode terminal can use the smaller value of the default CN paging cycle and the UE specific CN paging cycle (if configured).
- An inactive mode UE can use the smallest value among the default CN paging cycle, UE specific CN paging cycle (if configured), and RAN paging cycle (if configured).
- 1d is a diagram illustrating a CN paging reception procedure of a standby mode terminal (UE in RRC_Idle) according to an embodiment of the present disclosure.
- the standby mode UE may monitor the paging channel during a paging occasion (PO) (1d-05) of each predefined DRX cycle to save energy. That is, the terminal may enter the sleep mode between POs. For each PO, the UE can scan the PDCCH having the CRC scrambled with the P-RNTI. If the UPF (User Plane Function) receives downlink data toward the UE, the UPF may initiate a paging procedure to the AMF through a Session Management Function (SMF).
- SMF Session Management Function
- the AMF may manage the location information of the terminal in units of registered Tracking Areas, and may broadcast an NG application protocol (NGAP) paging message to all gNBs within the registered Tracking Areas to which the corresponding terminal belongs.
- the gNBs receiving the NGAP paging message transmit PDCCH (with CRC scrambled to P-RNTI) according to the PO of the UE (see steps 1d-15 and 1c-05 of FIG. 1c).
- the UE scanning the PDCCH may detect PDCCH transmission from the gNB and receive an RRC paging message (see steps 1d-20 and 1c-10 of FIG. 1c). If the UE finds a PagingRecord identical to its own UE identity (eg, S-TMSI or I-RNTI) in the RRC paging message, it may perform random access to establish an RRC connection (see step 1d-25).
- 1E is a diagram illustrating a RAN paging reception procedure of an inactive mode UE (UE in RRC_Inactive) according to an embodiment of the present disclosure.
- the inactive mode UE may monitor the paging channel during a paging occasion (PO) (1e-05) of each predefined DRX cycle to save energy. That is, the terminal may enter the sleep mode between POs. For each PO, the UE can scan the PDCCH having the CRC scrambled with the P-RNTI. If the UPF receives downlink data for the UE, it may forward the received data to the serving base station (Serving gNB) (see step 1e-10). The serving base station may store or manage the location record of the terminal in units of RNA (RAN Notification Area).
- RNA RAN Notification Area
- the serving base station can deliver an XnAP (Xn application protocol) RAN paging message to all gNBs within the RNA to which the corresponding terminal belongs (see step 1e-15).
- the gNBs receiving the XnAP RAN paging message transmit the PDCCH (with the CRC scrambled to the P-RNTI) according to the PO of the UE (see steps 1e-20 and 1c-05 of FIG. 1c).
- the UE scanning the PDCCH may detect PDCCH transmission from the gNB and receive an RRC paging message (see steps 1e-25 and 1c-10 of FIG. 1c). If the UE finds a PagingRecord identical to its own UE identity (eg, S-TMSI or I-RNTI) in the RRC paging message, it may perform random access to resume the RRC connection (see step 1e-30).
- a PagingRecord identical to its own UE identity (eg, S-TMSI or I-RNTI) in the RRC pag
- 1f is a diagram illustrating a paging procedure using eDRX in LTE, according to an embodiment of the present disclosure.
- extended DRX (eDRX) is configured for a standby mode terminal in LTE, the following may be applied.
- the DRX cycle can be extended up to 10.24s or more, and can be extended up to 2621.44s (43.69 minutes).
- H-SFN Hyper Slot Frame Number or H-SFN or HSFN
- HSFN can be increased by 1 every time the SFN value rotates one cycle.
- the SFN value increases by 1 from 0 to 1023 (10 ms per radio frame), and after SFN reaches 1023, it returns to 0, and at this time, the HSFN value may increase by 1.
- PH may mean H-SFN in which the terminal starts paging DRX monitoring during the Paging Time Window (PTW) used in ECM-IDLE mode.
- PW Paging Time Window
- PH may be determined by a formula known to the MME/AMF, UE, and base station, and may be determined as a function of eDRX cycle and UE identity.
- the terminal may monitor paging during the PTW period or 2) until receiving a paging message including the NAS identity of the terminal (or until whichever occurs earlier).
- the starting offset of PTW is uniformly distributed within PH and can be defined according to TS 36.304.
- MME/AMF may use the formula defined in TS 36.304 to determine the starting point of PH and PTW.
- the MME/AMF may send an S1 paging request immediately before starting PTW or during PTW in order to avoid a procedure of storing paging messages in the base station.
- ETWS Earthquake and Tsunami Warning System
- CMAS Commercial Mobile Alert Service
- PWS Public Warning System
- EAB Extended Access Barring
- the terminal may check whether stored system information is valid before establishing the RRC connection. For a terminal set to an eDRX cycle longer than the system information modification period, a paging message including systemInfoModification-eDRX may be used to notify system information change.
- T eDRX eDRX cycle
- PTW (1f-20) is UE-specific, 1) Paging Hyperframe (PH) (1f-25) and 2) PTW start point (PTW_start) (1f-30) within PH (1f-25) and 3) PTW end It is determined by the point (PTW_end) (1f-35).
- the above-mentioned three PTW determining factors are determined by the following equation.
- PTW_end (1f-35) indicates an SFN outside of PH (1f-25) including PTW_start (1f-30) according to PTW_start (1f-30) and the set length of PTW (1f-20). You may.
- FCS Frame Check Sequence
- 5G-S-TMSI is used for Hashed-ID if the UE supports connection to 5GC and NAS indicated to use 5GC for the selected cell.
- S-TMSI ⁇ b39, b38, ..., b0> as defined in TS 23.003 [35]
- 5G-S-TMSI ⁇ b47, b46, ..., b0> as defined in TS 23.003 [35].
- the 32-bit FCS shall be the ones complement of the sum (modulo 2) of Y1 and Y2, where - Y1 is the remainder of x k (x 31 + x 30 + x 29 + x 28 + x 27 + x 26 + x 25 + x 24 + x 23 + x 22 + x 21 + x 20 + x 19 + x 18 + x 17 + x 16 + x 15 + x 14 + x 13 + x 12 + x 11 + x 10 + x 9 + x 8 + x 7 + x 6 + x 5 + x 4 + x 3 + x 2 + x 1 + 1) divided (modulo 2) by the generator polynomial x 32 + x 26 + x 23 + x 22 + x 16 + x 12 + x 11 + x 10 + x 8 + x 7 + x 5 + x 4 + x 2 + x 1 + 1) divided (modulo 2) by the generator polynomial x 32 + x 26 +
- 1G is a diagram illustrating a procedure for determining a paging monitoring period by a terminal in LTE according to an embodiment of the present disclosure.
- the UE may receive system information.
- the terminal may select one cell based on the received (single or multiple) system information and camp on the selected cell.
- the terminal may establish an RRC connection.
- the UE transitioning to the RRC connection mode configures eDRX from the CN through negotiation using NAS signaling (eg, Attach request/accept, Tracking area update request/accept message) with the CN (MME or AMF) can receive
- the eDRX setting may include a PTW length and an eDRX cycle (T eDRX ).
- step 1g-25 the RRC connection setting of the terminal is released, and the terminal may transition the RRC mode to standby mode (RRC_IDLE) or inactive mode (RRC_INACTIVE).
- RRC_IDLE standby mode
- RRC_INACTIVE inactive mode
- a UE configured with eDRX can calculate its own PTW, which occurs periodically, using its own identity and eDRX configuration.
- step 1g-30 when the terminal transitions to the standby mode (RRC_IDLE), in step 1g-35, it may be determined whether the current time point (or observation time point) is included in the PTW. If the current time point is included in the PTW, the procedure proceeds to step 1g-40, and the terminal selects the smallest value among the values set for the terminal among 1) UE specific cycle and 2) Default DRX cycle as a paging monitoring cycle. can be used as (As described above, when eDRX is set to a T eDRX value of 512rf, the terminal can perform the same operation as legacy DRX using the set period.
- the terminal has a T eDRX value of 512rf It is assumed that a value other than that is set, and accordingly, the operation of eDRX, which is different from legacy DRX, will be described.) If the current time point is not included in the PTW, the procedure proceeds to step 1g-45, and the terminal performs paging monitoring. may not After performing step 1g-40 or step 1g-45, the terminal proceeds to step 1g-35 to continue determining whether it is inside or outside the PTW, and depending on the determination result, whether to proceed to step 1g-40 or step 1g- The process of selecting whether to proceed to 45 may be repeatedly performed.
- step 1g-55 when the terminal transitions to the inactive mode (RRC_INACTIVE), in step 1g-55, it can be determined whether the current time point (or observation time point) is included in the PTW. If the current time point is included in the PTW, the procedure proceeds to step 1g-60, and the UE paging the smallest value among the values set for the UE among 1) UE specific cycle, 2) Default cycle, and 3) RAN paging cycle It can be used as a monitoring cycle (Paging cycle). (As described above, when eDRX is set to a T eDRX value of 512rf, the terminal can perform the same operation as legacy DRX using the set period.
- the terminal has a T eDRX value of 512rf It is assumed that a value other than that is set, and accordingly, the operation of eDRX different from legacy DRX will be described.) If the current time point is not included in the PTW, the procedure proceeds to step 1g-65, and the terminal performs a RAN paging cycle Paging monitoring can be performed periodically. After performing step 1g-60 or step 1g-65, the terminal proceeds to step 1g-55 to continue determining whether it is inside or outside the PTW, and depending on the determination result, whether to proceed to step 1g-60 or step 1g-65 The process of selecting whether to proceed with can be performed repeatedly.
- 1H is a diagram illustrating a paging procedure using separate eDRX for CN paging and RAN paging, respectively, according to an embodiment of the present disclosure.
- eDRX and related technologies can be seen as being used and introduced only for CN paging. That is, a UE in standby mode may monitor and receive CN paging within the PTW, but may not monitor CN paging outside the PTW.
- the terminal in the inactive mode can monitor paging to receive RAN paging regardless of whether it is inside or outside the PTW.
- a terminal in standby mode can save energy in sleep mode for a long eDRX cycle (T eDRX ) after monitoring one PTW, whereas a terminal in inactive mode constantly (regardless of PTW) even if eDRX is set.
- the present disclosure proposes a method of separately defining an eDRX operation for CN paging and an eDRX operation for RAN paging.
- a PTW for CN paging ie, PTW_CN(1h-05)
- a PTW for RAN paging ie, PTW_RAN(1h-10)
- T eDRX_CN the eDRX cycle for CN paging
- T eDRX_RAN the eDRX cycle for RAN paging
- T eDRX_CN the eDRX cycle for CN paging
- T eDRX_RAN the eDRX cycle for RAN paging
- the PH for CN paging of the UE may be set to a cycle of T eDRX_CN,H (1h-15), and the PH for RAN paging (PH_RAN(1h-30)) is T eDRX_RAN, It can be set to H (1h-20) cycle.
- PTW_CN_start(1h-35) indicates the SFN that PTW_CN(1h-05) starts
- PTW_CN_end(1h-40) indicates the SFN that PTW_CN(1h-05) ends.
- PTW_CN_end(1h-40) may indicate an SFN outside PH_CN(1h-25) including PTW_CN_start(1h-35) according to PTW_CN_start(1h-35) and the set length (L_CN) of PTW_CN(1h-05). there is.
- PTW_RAN_start (1h-45) indicates the SFN that PTW_RAN (1h-10) starts
- PTW_RAN_end (1h-50) indicates the SFN that PTW_RAN (1h-10) ends. do.
- PTW_RAN_end(1h-50) may indicate an SFN outside the PH_RAN(1h-30) including PTW_RAN_start(1h-45) according to PTW_RAN_start(1h-45) and the set length (L_RAN) of PTW_RAN(1h-10). there is.
- the eDRX parameters for CN paging (eg T eDRX_CN and L_CN and PH_CN and PTW_CN_start and PTW_CN_end) and the eDRX parameters for RAN paging (eg T eDRX_RAN and L_RAN and PH_RAN and PTW_RAN_start and PTW_RAN_end) have different values or It can be set or calculated to the same value.
- CN may determine eDRX parameters (eg, T eDRX_CN and L_CN) for CN paging.
- the CN may set eDRX parameters for CN paging to the UE through NAS signaling. Alternatively, it can be configured for the UE through negotiation between the CN and the UE. For example, Attach request/accept and Tracking area update request/accept messages may be used.
- the CN may deliver the eDRX parameters to the base station.
- the eDRX parameter may be included in the NGAP paging message.
- the eDRX parameter value may be delivered to the Core Network Assistance Information IE in the NGAP message (eg, Initial Context Setup Request, UE Context Modification Request, Handover Request, Path Switch Request Acknowledge).
- the eDRX parameters for CN paging transmitted to the terminal or the base station may be some or all of the parameters described below, and the parameters transmitted to the terminal and the parameters transmitted to the base station may be the same or different.
- PH_CN e.g., HSFN of PH_CN
- the RAN may determine eDRX parameters (eg, T eDRX_RAN and L_RAN) for RAN paging.
- the RAN may set eDRX parameters for RAN paging to the UE through RRC signaling. For example, an RRC Release message, SIB, or a message for new eDRX may be used. Alternatively, it may be configured for the UE through negotiation between the RAN and the UE.
- the RAN may deliver the eDRX parameters to the CN.
- eDRX parameter values may be transmitted within an NGAP message (eg, Initial Context Setup Response, UE Context Modification Response, Handover Request Acknowledge, Path Switch Request).
- the eDRX parameters for RAN paging transmitted to the UE or CN may be some or all of the parameters described below, and the parameters transmitted to the UE and the parameters transmitted to the CN may be the same or different.
- PH_RAN eg, HSFN of PH_RAN
- PH_CN (1h-25) including PTW_CN_start (1h-35) can be defined as an HSFN that satisfies the following formula.
- H-SFN (UE_ID_H mod T eDRX_CN,H ),
- PH_RAN (1h-30) including PTW_RAN_start (1h-45) can be defined as an HSFN that satisfies the following formula.
- H-SFN (UE_ID_H mod T eDRX_RAN,H ),
- T eDRX_RAN,H RAN paging eDRX cycle of the UE in Hyper-frames
- H-SFN + PH_offset may be used instead of H-SFN.
- PH_offset may be a fixed value defined by the standard or a value set by a CN or a base station.
- PTW_CN_start (1h-35) and PTW_RAN_start (1h-45) are identical If it can be matched, the complexity of performing the paging procedure of the terminal/base station/CN can be reduced. To this end, PTW_CN_start (1h-35) and PTW_RAN_start (1h-45) can be defined and used as SFNs that satisfy one of the following options.
- PTW_CN_start(1h-35) and PTW_RAN_start(1h-45) always use the same formula (one of the sub-options) below (irrespective of the three cases described below)
- the same formula is used to match the values of PTW_CN_start(1h-35) and PTW_RAN_start(1h-45).
- the same value can be derived by sharing T eDRX_CN,H ( 1h-15). do.
- the starting point of the PTW can be changed by introducing an offset.
- the offset may be a fixed value defined in the standard, or a value variably set as one of the eDRX parameters set by CN or RAN.
- PTW_start can be set for every N SFN intervals within PH, and N can be a fixed value defined in the standard, or CN or RAN.
- X may be a fixed value defined in the standard, or may be a value that is variably set according to one of the eDRX parameters set by CN or RAN (eg, according to T eDRX value or L value).
- HSFN is not defined with 1024 SFNs but with k SFNs
- k can be used instead of 1024 in Options 1-3, 1-4, 1-5 and 1-6.
- HSFN is defined as k SFN and the number of possible PTWs in PH is defined as m, it can be changed to m instead of 4 and k/m instead of 256 used in Options 1-1 and 1-2. This can be applied to all options of the present disclosure.
- Option 2 In Case 1 and Case 2, use one of the aforementioned options 1-1 to 1-6. In case 3, one of options 1-1 to 1-6 described above is used, but T eDRX_RAN,H (1h-20) is used instead of T eDRX_CN,H (1h-15).
- PTW_CN_start(1h-35) and PTW_RAN_start(1h-45) equally use one of Options 1-1 to 1-6
- Option 1-1 is used for PTW_CN_start(1h-35). From 1-6 can be used.
- one of Options 1-1 to 1-6 is used for PTW_RAN_start (1h-45)
- T eDRX_RAN,H (1h-20) can be used instead of T eDRX_CN ,H (1h-15).
- N, X, and offsets may have different values for RAN paging and CN paging.
- N_CN is used for Case 1 and Case 2
- N_RAN can be used for Case 3
- N_CN and N_RAN can be defined as different values in the standard, or set by the network (CN or RAN).
- the option formula (one of 1-1 to 1-6) used by the terminal for each case may be the same or different. If different, the formula to be used for each case can be determined as a fixed formula in the standard, or the formula can be variably determined by CN or RAN.
- CN or RAN can configure one indicator to the UE as an eDRX parameter. If the indicator exists or is set to True, one of options 1-1 to 1-6 can be used in the three cases described above. If the indicator does not exist or is set to False, one of Options 1-1 to 1-6 can be used for Cases 1 and 2, and one of Options 1-1 to 1-6 can be used for Case 3. , T eDRX_RAN,H (1h-20) can be used instead of T eDRX_CN,H (1h-15).
- the option formula (one of 1-1 to 1-6) used by the terminal for each case may be the same or different. If different, the formula to be used for each case can be determined as a fixed formula in the standard, or the formula can be variably determined by CN or RAN. The meaning of an indicator can be reversed.
- UE_ID_H is hashed again using the hash function. Since UE_ID_H has already been used in the PH calculation, it can be hashed again and used to determine PTW_start independent of the PH result.
- UE_ID_H_new some or all of the remaining bits of the Hashed ID not used in UE_ID_H may be used for UE_ID_H_new, which is an input independent of UE_ID_H below used for PH calculation.
- UE_ID_H_new may be one of the following.
- UE_ID_H_new can be hashed again and used.
- n, m, k, or q may be a fixed value defined in the standard. Alternatively, it may be a value set by the network (CN or RAN).
- the base station or CN may directly set i eDRX to a common (same value for CN paging and RAN paging).
- a value for CN paging eg i eDRX_CN
- a value for RAN paging eg i eDRX_RAN
- Set values may be common to all terminals or may be UE specific.
- i eDRX may be a fixed, common (same value for CN paging and RAN paging) defined in the standard.
- a value for CN paging eg i eDRX_CN
- a value for RAN paging eg i eDRX_RAN
- Option 7 In Case 1 above, PTW_CN_start (1h-35) obtained by using one of Options 1-1 to 1-6 and one of Options 1-1 to 1-6 are used, but T eDRX_CN,H (1h -15) Instead of using T eDRX_RAN,H (1h-20), PTW is monitored from the starting point that occurs first (or later) among PTW_RAN_start (1h-45) obtained. And monitoring can be done up to the point where the PTW (PTW_RAN (1h-10) or PTW_CN (1h-05)) that started earlier ends, or the PTW (PTW_CN (1h-05) or PTW_RAN (1h-10)) that started later ends. You can even do it to the point where it becomes.
- PTW_CN_end (1h-40) and PTW_RAN_end (1h-50) may each be defined as an SFN that satisfies the following.
- PTW_CN_end is the last radio frame of the PTW_CN and has SFN satisfying the following equation:
- PTW_RAN_end is the last radio frame of the PTW_RAN and has SFN satisfying the following equation:
- HSFN is defined as k SFNs instead of 1024 SFNs
- k may be used instead of 1024 in the above equation.
- L_CN*100 or L_RAN*100 may be additionally modified accordingly.
- an equation for determining PTW_start may be modified.
- PTW_start values that can be derived are 0, 256, 512, and 768, and the interval between the values is 2.56 seconds.
- the minimum length of PTW is 1.28 seconds. That is, when using a PTW length of 1.28 seconds, among all SFN resources available for paging, SFN is 0 to 127, 256 to 383, 512 to 639, and 768 to 895. That is, SFN resources of 128 to 255, 384 to 511, 640 to 767, and 896 to 1023 cannot be used as PTW. Therefore, to solve this problem, using 128 instead of 256 and 8 instead of 4 in the above formula can achieve maximum utilization of resources and uniform distribution of paging. This can be modified or defined according to the change in the minimum supportable PTW length.
- 1i is a diagram illustrating a procedure for determining a paging monitoring period by a terminal according to an embodiment of the present disclosure.
- the terminal may receive system information.
- the terminal may also receive eDRX parameters (eg, L_RAN, T eDRX_RAN ) for RAN paging from the base station.
- the terminal may select one cell based on the received system information (single or multiple) and camp on the selected cell.
- the UE may establish an RRC connection.
- the UE that has transitioned to the RRC connection mode establishes eDRX from the CN through negotiation using NAS signaling (eg, Attach request/accept, Tracking area update request/accept message) with the CN (MME or AMF) can receive
- NAS signaling eg, Attach request/accept, Tracking area update request/accept message
- MME or AMF eDRX settings for CN paging
- L_CN and eDRX cycles T eDRX_CN
- the UE may also receive eDRX parameters (eg, L_RAN, T eDRX_RAN ) for RAN paging from the base station.
- the terminal may transition the RRC mode to standby mode (RRC_IDLE) or inactive mode (RRC_INACTIVE).
- the terminal may also receive eDRX parameters (eg, L_RAN, T eDRX_RAN ) for RAN paging from the base station through RRC Release.
- eDRX parameters eg, L_RAN, T eDRX_RAN
- a UE that has received CN paging eDRX configuration and RAN paging eDRX configuration can calculate its own PTW_CN and PTW_RAN, which occur periodically, using its own identity and set eDRX parameters.
- step 1i-30 when the terminal transitions to standby mode (RRC_IDLE), in step 1i-35, it may be determined whether the current time point (or observation time point) is included in PTW_CN. If the current time point is included in PTW_CN, the procedure proceeds to step 1i-40, and the terminal selects the smallest value among the values set for the terminal among 1) UE specific cycle and 2) Default DRX cycle as a paging monitoring cycle. can be used as (Similar to conventional LTE, when eDRX is set to a specific value (eg, 512rf) of T eDRX_CN or when T eDRX_CN is a specific interval, the UE can perform the same operation as legacy DRX.
- a specific value eg, 512rf
- the operation of eDRX which is different from legacy DRX, is described assuming that the T eDRX_CN value is set to a value other than such a specific value or interval to the UE.
- the procedure is step 1i Proceed to -45, and the terminal may not perform paging monitoring.
- the terminal in the standby mode proceeds to step 1i-30 to continue to determine whether it is inside or outside the PTW_CN, and determines whether to proceed to step 1i-40 according to the determination result.
- the process of selecting whether to proceed to step 1i-45 may be repeatedly performed.
- step 1i-55 when the terminal transitions to the inactive mode (RRC_INACTIVE), in step 1i-55, it may first be determined whether the current time point (or observation time point) is included in PTW_CN. Then, in step 1i-60 or step 1i-75, it may be additionally determined whether the current time point (or observation time point) is included in the PTW_RAN. In one embodiment, whether or not PTW_RAN is included may be determined first, and whether or not PTW_CN is included may be determined later. Alternatively, whether to include PTW_RAN and whether to include PTW_CN may be simultaneously determined.
- the procedure proceeds to step 1i-65, and the UE selects the smallest value among the values set for the UE among 1) UE specific cycle, 2) Default cycle, and 3) RAN paging cycle can be used as a paging monitoring cycle.
- eDRX is set to a specific value (eg, 512rf) of T eDRX_RAN or when T eDRX_RAN is a specific interval, the UE can perform the same operation as legacy DRX.
- eDRX which is different from legacy DRX
- the operation of eDRX is described assuming that the T eDRX_RAN value is set to a value other than such a specific value or interval to the UE.
- procedure proceeds to step 1i-70, and the terminal may perform paging monitoring with a cycle of the smallest value among values set for the terminal among 1) a UE specific cycle and 2) a default cycle. If the current time point does not belong to PTW_CN but is included in PTW_RAN, the procedure proceeds to step 1i-80, and the UE can monitor paging in RAN paging cycle cycles.
- the smallest value among values set for the terminal among 1) default cycle and 2) RAN paging cycle may be used as a paging monitoring cycle. If the current time point is not included in both PTW_CN and PTW_RAN, the procedure proceeds to step 1i-85, and the UE may not perform paging monitoring.
- the monitoring period may be the same or different, respectively, and may be one of the following values.
- step 1i-65, step 1i-70, step 1i-80, or step 1i-85 the UE proceeds to step 1i-55, and may continue to determine whether it is inside or outside the PTW_CN and PTW_RAN (step 1i- 55, step 1i-60, step 1i-75), select whether to proceed to step 1i-65, step 1i-70, step 1i-80, or step 1i-85 according to the judgment result
- the process can be performed repeatedly.
- the operation of eDRX different from legacy DRX was defined only when the T eDRX value was 512rf or higher.
- the present invention provides a specific T eDRX (or T eDRX_CN and T eDRX_RAN ) may be applied only in the interval.
- 1J is a diagram illustrating a terminal device according to an embodiment of the present disclosure.
- a terminal may include a radio frequency (RF) processing unit 1j-10, a baseband processing unit 1j-20, a storage unit 1j-30, and a control unit 1j-40.
- RF radio frequency
- the configuration of the terminal is not limited to the exemplary configuration shown in FIG. 1j, and may include fewer or more configurations than the configuration shown in FIG. 1j.
- the RF processing unit 1j-10 may perform functions for transmitting and receiving signals through a wireless channel, such as band conversion and amplification of signals.
- the RF processing unit 1j-10 may up-convert the baseband signal provided from the baseband processing unit 1j-20 into an RF band signal, transmit the signal through an antenna, and transmit the RF band signal received through the antenna.
- the signal can be down-converted to a baseband signal.
- the RF processor 1j-10 may include a transmit filter, a receive filter, an amplifier, a mixer, an oscillator, a digital to analog converter (DAC), an analog to digital converter (ADC), and the like. However, it is not limited to these examples. In FIG.
- the terminal may include a plurality of antennas.
- the RF processor 1j-10 may include a plurality of RF chains.
- the RF processor 1j-10 may perform beamforming. For beamforming, the RF processing unit 1j-10 may adjust the phase and size of signals transmitted and received through a plurality of antennas or antenna elements. Also, the RF processing unit 1j-10 may perform MIMO, and may receive multiple layers when performing the MIMO operation.
- the baseband processing unit 1j-20 may perform a conversion function between a baseband signal and a bit string according to the physical layer standard of the system. For example, during data transmission, the baseband processor 1j-20 may generate complex symbols by encoding and modulating a transmission bit stream. In addition, when receiving data, the baseband processing unit 1j-20 may demodulate and decode the baseband signal provided from the RF processing unit 1j-10 to restore the received bit string. For example, in the case of orthogonal frequency division multiplexing (OFDM), during data transmission, the baseband processing unit 1j-20 encodes and modulates a transmission bit stream to generate complex symbols, and transmits the generated complex symbols to subcarriers.
- OFDM orthogonal frequency division multiplexing
- OFDM symbols may be configured through inverse fast Fourier transform (IFFT) operation and cyclic prefix (CP) insertion.
- IFFT inverse fast Fourier transform
- CP cyclic prefix
- the baseband processing unit 1j-20 divides the baseband signal provided from the RF processing unit 1j-10 into OFDM symbol units, and maps the baseband signals to subcarriers through a fast Fourier transform (FFT) operation. After restoring the signals, a received bit stream may be restored through demodulation and decoding.
- FFT fast Fourier transform
- the baseband processing unit 1j-20 and the RF processing unit 1j-10 may transmit and receive signals as described above. Accordingly, the baseband processing unit 1j-20 and the RF processing unit 1j-10 may be referred to as a transmitter, a receiver, a transceiver, or a communication unit. Furthermore, at least one of the baseband processing unit 1j-20 and the RF processing unit 1j-10 may include a plurality of communication modules to support a plurality of different wireless access technologies. In addition, at least one of the baseband processing unit 1j-20 and the RF processing unit 1j-10 may include different communication modules to process signals of different frequency bands.
- different radio access technologies may include a wireless LAN (eg, IEEE 802.11), a cellular network (eg, LTE), and the like.
- the different frequency bands may include a super high frequency (SHF) (eg, 2.NRHz, NRhz) band and a millimeter wave (eg, 60 GHz) band.
- SHF super high frequency
- the terminal may transmit/receive signals with the base station using the baseband processor 1j-20 and the RF processor 1j-10, and the signals may include control information and data.
- the storage unit 1j-30 may store data such as basic programs for operation of the terminal, application programs, and setting information.
- the storage unit 1j-30 may store data information such as a basic program for operating a terminal, an application program, and setting information.
- the storage unit 1j-30 may provide the stored data according to the request of the control unit 1j-40.
- the storage unit 1j-30 may include a storage medium such as a ROM, a RAM, a hard disk, a CD-ROM, and a DVD, or a combination of storage media. Also, the storage unit 1j-30 may be composed of a plurality of memories. According to an embodiment of the present disclosure, the storage unit 1j-30 may store a program for performing a handover method according to the present disclosure.
- the control unit 1j-40 may control overall operations of the terminal. For example, the control unit 1j-40 may transmit and receive signals through the baseband processing unit 1j-20 and the RF processing unit 1j-10.
- control unit 1j-40 can write and read data in the storage unit 1j-30.
- the controller 1j-40 may include at least one processor.
- the control unit 1j-40 may include a communication processor (CP) that controls communication and an application processor (AP) that controls upper layers such as application programs.
- the control unit 1j-40 may include a multi-connection processing unit 1j-42 configured to process a process operating in a multi-connection mode.
- at least one component in the terminal may be implemented as one chip.
- 1K is a diagram illustrating a base station apparatus according to an embodiment of the present disclosure.
- the base station of FIG. 1K may be included in the aforementioned network.
- the base station includes an RF processing unit 1k-10, a baseband processing unit 1k-20, a backhaul communication unit 1k-30, a storage unit 1k-40, and a control unit 1k-50.
- the configuration of the base station is not limited to the exemplary configuration shown in FIG. 1K, and the base station may include fewer or more configurations than the configuration shown in FIG. 1K.
- the RF processor 1k-10 may perform functions for transmitting and receiving signals through a wireless channel, such as band conversion and amplification of signals.
- the RF processing unit 1k-10 may up-convert the baseband signal provided from the baseband processing unit 1k-20 into an RF band signal, transmit the signal through an antenna, and transmit the RF band signal received through the antenna.
- the signal can be downconverted to a baseband signal.
- the RF processor 1k-10 may include a transmit filter, a receive filter, an amplifier, a mixer, an oscillator, a DAC, an ADC, and the like. In FIG. 1K, only one antenna is shown, but the RF processor 1k-10 may include a plurality of antennas. Also, the RF processor 1k-10 may include a plurality of RF chains.
- the RF processor 1k-10 may perform beamforming. For beamforming, the RF processing unit 1k-10 may adjust the phase and size of signals transmitted and received through a plurality of antennas or antenna elements.
- the RF processor 1k-10 may perform downlink MIMO operation by transmitting one or more layers.
- the baseband processor 1k-20 may perform a conversion function between a baseband signal and a bit stream according to the physical layer standard. For example, during data transmission, the baseband processing unit 1k-20 may generate complex symbols by encoding and modulating a transmission bit stream. In addition, when receiving data, the baseband processing unit 1k-20 may demodulate and decode the baseband signal provided from the RF processing unit 1k-10 to restore the received bit stream. For example, according to the OFDM method, when data is transmitted, the baseband processing unit 1k-20 generates complex symbols by encoding and modulating a transmission bit stream, maps the generated complex symbols to subcarriers, and then performs IFFT OFDM symbols can be configured through calculation and CP insertion.
- the baseband processing unit 1k-20 divides the baseband signal provided from the RF processing unit 1k-10 into OFDM symbol units, restores signals mapped to subcarriers through FFT operation, and , the received bit stream can be restored through demodulation and decoding.
- the baseband processing unit 1k-20 and the RF processing unit 1k-10 may transmit and receive signals as described above. Accordingly, the baseband processing unit 1k-20 and the RF processing unit 1k-10 may be referred to as a transmission unit, a reception unit, a transmission/reception unit, a communication unit, or a wireless communication unit.
- the base station may transmit and receive signals to and from the terminal using the baseband processor 1k-20 and the RF processor 1k-10, and the signals may include control information and data.
- the backhaul communication unit 1k-30 may provide an interface for communicating with other nodes in the network. For example, the backhaul communication unit 1k-30 converts a bit string transmitted from the main base station to another node, eg, a secondary base station, a core network, etc. into a physical signal, and converts the physical signal received from the other node into a bit string. can be converted into heat.
- another node eg, a secondary base station, a core network, etc.
- converts the physical signal received from the other node into a bit string. can be converted into heat.
- the storage unit 1k-40 may store data such as a basic program for operation of the main base station, an application program, and setting information. For example, the storage unit 1k-40 may store information about a bearer assigned to a connected terminal, measurement results reported from the connected terminal, and the like. In addition, the storage unit 1k-40 may store information that is a criterion for determining whether to provide or stop multiple connections to the terminal. Also, the storage unit 1k-40 may provide stored data according to a request of the control unit 1k-50.
- the storage unit 1k-40 may include a storage medium such as a ROM, a RAM, a hard disk, a CD-ROM, and a DVD, or a combination of storage media. Also, the storage unit 1k-40 may be composed of a plurality of memories. According to an embodiment of the present disclosure, the storage unit 1k-40 may store a program for performing handover according to the present disclosure.
- the control unit 1k-50 may control overall operations of the main base station. For example, the control unit 1k-50 may transmit and receive signals through the baseband processing unit 1k-20 and the RF processing unit 1k-10 or through the backhaul communication unit 1k-30. In addition, the control unit 1k-50 can write and read data in the storage unit 1k-40. To this end, the controller 1k-50 may include at least one processor. Also, according to an embodiment of the present disclosure, the control unit 1k-50 may include a multi-connection processing unit 1k-52 configured to process a process operating in a multi-connection mode.
- a computer readable storage medium storing one or more programs (software modules) may be provided.
- One or more programs stored in a computer-readable storage medium are configured for execution by one or more processors in an electronic device.
- the one or more programs include instructions that cause the electronic device to execute methods according to embodiments described in the claims or specification of this disclosure.
- Such programs may include random access memory, non-volatile memory including flash memory, read only memory (ROM), and electrically erasable programmable ROM.
- EEPROM Electrically Erasable Programmable Read Only Memory
- magnetic disc storage device Compact Disc-ROM (CD-ROM), Digital Versatile Discs (DVDs), or other forms of It can be stored on optical storage devices, magnetic cassettes. Alternatively, it may be stored in a memory composed of a combination of some or all of these.
- each configuration memory may include a plurality.
- the program may be performed through a communication network such as the Internet, an Intranet, a Local Area Network (LAN), a Wide LAN (WLAN), or a Storage Area Network (SAN), or a communication network composed of a combination thereof. It can be stored on an attachable storage device that can be accessed. Such a storage device may be connected to a device performing an embodiment of the present disclosure through an external port. In addition, a separate storage device on a communication network may be connected to a device performing an embodiment of the present disclosure.
- a communication network such as the Internet, an Intranet, a Local Area Network (LAN), a Wide LAN (WLAN), or a Storage Area Network (SAN), or a communication network composed of a combination thereof. It can be stored on an attachable storage device that can be accessed. Such a storage device may be connected to a device performing an embodiment of the present disclosure through an external port. In addition, a separate storage device on a communication network may be connected to a device performing an embodiment of the present disclosure.
- each embodiment of the present disclosure may be operated in combination with each other as needed.
- a base station and a terminal may be operated by combining parts of the methods proposed in the present disclosure with each other.
- the embodiments of the present disclosure have been presented based on 5G and NR systems, other modifications based on the technical ideas of the embodiments may be implemented in other systems such as LTE, LTE-A, and LTE-A-Pro systems.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
| Bit field | Short Message indicator |
| 00 | Reserved |
| 01 | Only scheduling information for Paging is present in the DCI |
| 10 | Only short message is present in the DCI |
| 11 | Both scheduling information for Paging and short message are present in the DCI |
| Bit | Short Message |
| 1 | systemInfoModification If set to 1: indication of a BCCH modification other than SIB6, SIB7 and SIB8. |
| 2 | etwsAndCmasIndication If set to 1: indication of an ETWS primary notification and/or an ETWS secondary notification and/or a CMAS notification. |
| 3 - 8 | Reserved |
| The PH is the H-SFN satisfying the following equation: H-SFN mod TeDRX,H= (UE_ID_H mod TeDRX,H), where - UE_ID_H: - 10 most significant bits of the Hashed ID, if P-RNTI is monitored on PDCCH or MPDCCH - 12 most significant bits of the Hashed ID, if P-RNTI is monitored on NPDCCH - T eDRX,H : eDRX cycle of the UE in Hyper-frames, (TeDRX,H =1, 2, ... , 256 Hyper-frames) (for NB-IoT, TeDRX,H =2, ..., 1024 Hyper-frames) and configured by upper layers. PTW_start denotes the first radio frame of the PH that is part of the PTW and has SFN satisfying the following equation: SFN = 256* ieDRX, where - ieDRX = floor(UE_ID_H /TeDRX,H) mod 4 PTW_end is the last radio frame of the PTW and has SFN satisfying the following equation: SFN = (PTW_start + L*100 - 1) mod 1024, where - L = Paging Time Window length (in seconds) configured by upper layers Hashed ID is defined as follows: Hashed_ID is Frame Check Sequence (FCS) for the bits b31, b30, ..., b0 of S-TMSI or 5G-S-TMSI. 5G-S-TMSI is used for Hashed-ID if the UE supports connection to 5GC and NAS indicated to use 5GC for the selected cell. S-TMSI = <b39, b38, ..., b0> as defined in TS 23.003 [35] 5G-S-TMSI = <b47, b46, ..., b0> as defined in TS 23.003 [35]. The 32-bit FCS shall be the ones complement of the sum (modulo 2) of Y1 and Y2, where - Y1 is the remainder of xk (x31 + x30 + x29 + x28 + x27 + x26 + x25 + x24 + x23 + x22 + x21 + x20 + x19 + x18 + x17 + x16 + x15 + x14 + x13 + x12 + x11 + x10 + x9 + x8 + x7 + x6 + x5 + x4 + x3 + x2 + x1 + 1) divided (modulo 2) by the generator polynomial x32 + x26 + x23 + x22 + x16 + x12 + x11 + x10 + x8 + x7 + x5 + x4 + x2 + x + 1, where k is 32; and - Y2 is the remainder of Y3 divided (modulo 2) by the generator polynomial x32 + x26 + x23 + x22 + x16 + x12 + x11 + x10 + x8 + x7 + x5 + x4 + x2 + x + 1, where Y3 is the product of x32 by "b31, b30, ..., b0 of S-TMSI or 5G-S-TMSI", i.e., Y3 is the generator polynomial x32 (b31*x31 + b30*x30 + ... + b0*1). NOTE: The Y1 is 0xC704DD7B for any S-TMSI or 5G-S-TMSI value. |
| RRC_IDLE (대기 모드) | RRC_INACTIVE (비활성 모드) | |
| PTW 안 | 만약 TeDRX= 512rf이면 -> 주기=512rf 그 외 -> 1) UE specific cycle, 2) Default cycle 중 설정된 값 중 가장 작은 값 |
만약 TeDRX= 512rf이면 -> 주기=512rf 그 외 -> 1) UE specific cycle, 2) Default cycle, 3) RAN paging cycle 중 설정된 값 중 가장 작은 값 |
| PTW 밖 | 만약 TeDRX= 512rf -> 주기=512rf 그 외 -> 모니터링하지 않는다. |
만약 TeDRX= 512rf이면 -> 주기=512rf 그 외 -> RAN paging cycle |
Claims (15)
- 무선 통신 시스템에서 단말이 동작하는 방법에 있어서,캠프-온 한 셀과 RRC(radio resource control) 연결을 수립하는 단계;RRC 연결 모드에서, 코어 네트워크로부터 CN(core network) 페이징을 위한 제1 eDRX(extended discontinuous reception) 파라미터를 수신하는 단계;기지국으로부터 RAN(radio access network) 페이징을 위한 제2 eDRX 파라미터를 수신하는 단계;RRC 대기 모드 또는 RRC 비활성 모드로 천이하는 단계;상기 단말의 식별 정보, 상기 제1 eDRX 파라미터 및 상기 제2 eDRX 파라미터에 기초하여 제1 PTW(paging time window)의 길이 및 제2 PTW의 길이를 계산하는 단계;상기 단말의 RRC 모드, 현재 모니터링하는 프레임의 정보, 상기 제1 PTW의 정보, 또는 상기 제2 PTW의 정보 중 적어도 하나에 기초하여 페이징 모니터링 주기를 결정하는 단계; 및상기 결정된 주기에 기초하여 페이징 모니터링을 수행하는 단계를 포함하는, 방법.
- 제1항에 있어서,NAS(non-access stratum) 시그널링을 통해, 상기 코어 네트워크로부터 상기 제1 eDRX 파라미터를 수신하는, 방법.
- 제1항에 있어서,상기 제1 eDRX 파라미터는 CN 페이징을 위한 eDRX 주기(TeDRX_CN), 상기 제1 PTW의 길이(L_CN), 상기 제1 PTW가 시작하는 슬롯 프레임 번호(PTW_CN_start), 상기 제1 PTW가 종료되는 슬롯 프레임 번호(PTW_CN_end), 또는 CN 페이징 하이퍼프레임(PH_CN)을 지시하는 값 중 적어도 하나를 포함하는, 방법.
- 제1항에 있어서,RRC 시그널링을 통해, 상기 기지국으로부터 상기 제2 eDRX 파라미터를 수신하는, 방법.
- 제1항에 있어서,상기 제2 eDRX 파라미터는 RAN 페이징을 위한 eDRX 주기(TeDRX_RAN), 상기 제2 PTW의 길이(L_RAN), 상기 제2 PTW가 시작하는 슬롯 프레임 번호(PTW_RAN_start), 상기 제2 PTW가 종료되는 슬롯 프레임 번호(PTW_RAN_end), 또는 RAN 페이징 하이퍼프레임(PH_RAN)을 지시하는 값 중 적어도 하나를 포함하는, 방법.
- 제1항에 있어서, 상기 단말이 RRC 대기 모드로 천이한 경우,상기 현재 모니터링하는 프레임이 CN 페이징 주기마다 반복되는 상기 제1 PTW 내의 프레임에 대응되는지 여부를 판단하는 단계; 및상기 현재 모니터링하는 프레임이 상기 제1 PTW 내의 프레임에 대응된다고 판단된 경우, 단말 특정 주기 및 디폴트 DRX 주기 중 가장 작은 값을 페이징 모니터링 주기로 결정하고, 상기 현재 모니터링하는 프레임이 상기 제1 PTW 내의 프레임에 대응되지 않는다고 판단된 경우, 페이징 모니터링을 수행하지 않는 것으로 결정하는 단계를 더 포함하는, 방법.
- 제1항에 있어서, 상기 단말이 RRC 비활성 모드로 천이한 경우,상기 현재 모니터링하는 프레임이 CN 페이징 주기마다 반복되는 상기 제1 PTW 내의 프레임에 대응되는지 여부를 판단하는 단계;상기 현재 모니터링하는 프레임이 RAN 페이징 주기마다 반복되는 상기 제2 PTW 내의 프레임에 대응되는지 여부를 판단하는 단계; 및상기 현재 모니터링하는 프레임이 상기 제1 PTW 내의 프레임 및 상기 제2 PTW 내의 프레임에 각각 대응된다고 판단된 경우, 단말 특정 주기, 디폴트 DRX 주기, 및 상기 RAN 페이징 주기 중 가장 작은 값을 페이징 모니터링 주기로 결정하고,상기 현재 모니터링하는 프레임이 상기 제1 PTW 내의 프레임에 대응되고 상기 제2 PTW 내의 프레임에 대응되지 않는다고 판단된 경우, 상기 단말 특정 주기 및 상기 디폴트 DRX 주기 중 가장 작은 값을 상기 페이징 모니터링 주기로 결정하고,상기 현재 모니터링하는 프레임이 상기 제1 PTW 내의 프레임에 대응되지 않고 상기 제2 PTW 내의 프레임에 대응된다고 판단된 경우, 상기 RAN 페이징 주기를 상기 페이징 모니터링 주기로 결정하고,상기 현재 모니터링하는 프레임이 상기 제1 PTW 내의 프레임 및 상기 제2 PTW 내의 프레임에 각각 대응되지 않는다고 판단된 경우, 페이징 모니터링을 수행하지 않는 것으로 결정하는 단계를 더 포함하는, 방법.
- 제1항에 있어서,상기 제1 PTW가 시작하는 슬롯 프레임 번호(PTW_CN_start) 및 상기 제2 PTW가 시작하는 슬롯 프레임 번호(PTW_RAN_start)는 동일하게 설정되는, 방법.
- 무선 통신 시스템에서 동작하는 단말에 있어서,송수신부; 및상기 송수신부에 연결된 프로세서를 포함하고, 상기 프로세서는:캠프-온 한 셀과 RRC(radio resource control) 연결을 수립하고,RRC 연결 모드에서, 상기 송수신부를 통해, 코어 네트워크로부터 CN(core network) 페이징을 위한 제1 eDRX(extended discontinuous reception) 파라미터를 수신하고,기지국으로부터, 상기 송수신부를 통해, RAN(radio access network) 페이징을 위한 제2 eDRX 파라미터를 수신하고,RRC 대기 모드 또는 RRC 비활성 모드로 천이하고,상기 단말의 식별 정보, 상기 제1 eDRX 파라미터 및 상기 제2 eDRX 파라미터에 기초하여 제1 PTW(paging time window)의 길이 및 제2 PTW의 길이를 계산하고,상기 단말의 RRC 모드, 현재 모니터링하는 프레임의 정보, 상기 제1 PTW의 정보, 또는 상기 제2 PTW의 정보 중 적어도 하나에 기초하여 페이징 모니터링 주기를 결정하고,상기 결정된 주기에 기초하여 페이징 모니터링을 수행하는, 단말.
- 제9항에 있어서,NAS(non-access stratum) 시그널링을 통해, 상기 코어 네트워크로부터 상기 송수신부를 통해 상기 제1 eDRX 파라미터를 수신하는, 단말.
- 제9항에 있어서,상기 제1 eDRX 파라미터는 CN 페이징을 위한 eDRX 주기(TeDRX_CN), 상기 제1 PTW의 길이(L_CN), 상기 제1 PTW가 시작하는 슬롯 프레임 번호(PTW_CN_start), 상기 제1 PTW가 종료되는 슬롯 프레임 번호(PTW_CN_end), 또는 CN 페이징 하이퍼프레임(PH_CN)을 지시하는 값 중 적어도 하나를 포함하는, 단말.
- 제9항에 있어서,RRC 시그널링을 통해, 상기 기지국으로부터 상기 송수신부를 통해 상기 제2 eDRX 파라미터를 수신하는, 단말.
- 제9항에 있어서,상기 제2 eDRX 파라미터는 RAN 페이징을 위한 eDRX 주기(TeDRX_RAN), 상기 제2 PTW의 길이(L_RAN), 상기 제2 PTW가 시작하는 슬롯 프레임 번호(PTW_RAN_start), 상기 제2 PTW가 종료되는 슬롯 프레임 번호(PTW_RAN_end), 또는 RAN 페이징 하이퍼프레임(PH_RAN)을 지시하는 값 중 적어도 하나를 포함하는, 단말.
- 제9항에 있어서, 상기 RRC 대기 모드로 천이한 경우, 상기 프로세서는,상기 현재 모니터링하는 프레임이 CN 페이징 주기마다 반복되는 상기 제1 PTW 내의 프레임에 대응되는지 여부를 판단하고,상기 현재 모니터링하는 프레임이 상기 제1 PTW 내의 프레임에 대응된다고 판단된 경우, 단말 특정 주기 및 디폴트 DRX 주기 중 가장 작은 값을 페이징 모니터링 주기로 결정하고, 상기 현재 모니터링하는 프레임이 상기 제1 PTW 내의 프레임에 대응되지 않는다고 판단된 경우, 페이징 모니터링을 수행하지 않는 것으로 결정하는, 단말.
- 제9항에 있어서, 상기 RRC 비활성 모드로 천이한 경우, 상기 프로세서는,상기 현재 모니터링하는 프레임이 CN 페이징 주기마다 반복되는 상기 제1 PTW 내의 프레임에 대응되는지 여부를 판단하고,상기 현재 모니터링하는 프레임이 RAN 페이징 주기마다 반복되는 상기 제2 PTW 내의 프레임에 대응되는지 여부를 판단하고,상기 현재 모니터링하는 프레임이 상기 제1 PTW 내의 프레임 및 상기 제2 PTW 내의 프레임에 각각 대응된다고 판단된 경우, 단말 특정 주기, 디폴트 DRX 주기, 및 상기 RAN 페이징 주기 중 가장 작은 값을 페이징 모니터링 주기로 결정하고,상기 현재 모니터링하는 프레임이 상기 제1 PTW 내의 프레임에 대응되고 상기 제2 PTW 내의 프레임에 대응되지 않는다고 판단된 경우, 상기 단말 특정 주기 및 상기 디폴트 DRX 주기 중 가장 작은 값을 상기 페이징 모니터링 주기로 결정하고,상기 현재 모니터링하는 프레임이 상기 제1 PTW 내의 프레임에 대응되지 않고 상기 제2 PTW 내의 프레임에 대응된다고 판단된 경우, 상기 RAN 페이징 주기를 상기 페이징 모니터링 주기로 결정하고,상기 현재 모니터링하는 프레임이 상기 제1 PTW 내의 프레임 및 상기 제2 PTW 내의 프레임에 각각 대응되지 않는다고 판단된 경우, 페이징 모니터링을 수행하지 않는 것으로 결정하는, 단말.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22853558.9A EP4376517A4 (en) | 2021-08-05 | 2022-08-05 | METHOD AND DEVICE FOR EXTENDED DISCONTINUOUS RECEPTION FOR PAGING IN NEXT GENERATION MOBILE COMMUNICATION SYSTEM |
| US18/681,497 US20240357552A1 (en) | 2021-08-05 | 2022-08-05 | Method and device for extended discontinuous reception for paging in nextgeneration mobile communication system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2021-0103468 | 2021-08-05 | ||
| KR1020210103468A KR20230021513A (ko) | 2021-08-05 | 2021-08-05 | 차세대 이동통신 시스템에서 페이징을 위한 확장된 불연속 수신에 관한 방법 및 장치 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023014183A1 true WO2023014183A1 (ko) | 2023-02-09 |
Family
ID=85154684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2022/011686 Ceased WO2023014183A1 (ko) | 2021-08-05 | 2022-08-05 | 차세대 이동통신 시스템에서 페이징을 위한 확장된 불연속 수신에 관한 방법 및 장치 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20240357552A1 (ko) |
| EP (1) | EP4376517A4 (ko) |
| KR (1) | KR20230021513A (ko) |
| WO (1) | WO2023014183A1 (ko) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024098616A1 (en) | 2023-03-21 | 2024-05-16 | Zte Corporation | Wireless network paging |
| WO2024164884A1 (zh) * | 2023-02-10 | 2024-08-15 | 华为技术有限公司 | 寻呼方法及装置 |
| WO2024169585A1 (zh) * | 2023-02-13 | 2024-08-22 | 华为技术有限公司 | 一种通信方法及装置 |
| WO2024234220A1 (en) * | 2023-05-15 | 2024-11-21 | Qualcomm Incorporated | Performing measurements associated with overlapping paging time windows |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230388966A1 (en) * | 2022-05-27 | 2023-11-30 | Qualcomm Incorporated | Coordination between idle and inactive discontinuous reception |
| EP4290949A1 (en) * | 2022-06-08 | 2023-12-13 | Nokia Technologies Oy | Paging in extended drx mode (edrx) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017043767A1 (ko) * | 2015-09-11 | 2017-03-16 | 엘지전자 주식회사 | 무선 통신 시스템에서 확장된 drx 모드를 적용하여 유휴 모드를 동작하는 방법 및 이를 위한 장치 |
-
2021
- 2021-08-05 KR KR1020210103468A patent/KR20230021513A/ko active Pending
-
2022
- 2022-08-05 WO PCT/KR2022/011686 patent/WO2023014183A1/ko not_active Ceased
- 2022-08-05 US US18/681,497 patent/US20240357552A1/en active Pending
- 2022-08-05 EP EP22853558.9A patent/EP4376517A4/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017043767A1 (ko) * | 2015-09-11 | 2017-03-16 | 엘지전자 주식회사 | 무선 통신 시스템에서 확장된 drx 모드를 적용하여 유휴 모드를 동작하는 방법 및 이를 위한 장치 |
Non-Patent Citations (5)
| Title |
|---|
| "Institute of Electrical and Electronics Engineers", IEEE |
| HUAWEI, HISILICON: "eDRX for RedCap UE", 3GPP DRAFT; R2-2105636, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Electronic; 20210512 - 20210520, 11 May 2021 (2021-05-11), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP052007198 * |
| OPPO: "Discussion on eDRX for RedCap UEs", 3GPP DRAFT; R2-2104810, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. electronic; 20210519 - 20210527, 11 May 2021 (2021-05-11), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP052006561 * |
| VIVO, GUANGDONG GENIUS: "Discussions on eDRX for RedCap UEs", 3GPP DRAFT; R2-2104912, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Electronic; 20210519 - 20210527, 11 May 2021 (2021-05-11), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP052006654 * |
| XIAOMI COMMUNICATIONS: "Discussion on e-DRX for Redcap Devices", 3GPP DRAFT; R2-2102862, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. electronic; 20210412 - 20210420, 2 April 2021 (2021-04-02), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052174435 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024164884A1 (zh) * | 2023-02-10 | 2024-08-15 | 华为技术有限公司 | 寻呼方法及装置 |
| WO2024169585A1 (zh) * | 2023-02-13 | 2024-08-22 | 华为技术有限公司 | 一种通信方法及装置 |
| WO2024098616A1 (en) | 2023-03-21 | 2024-05-16 | Zte Corporation | Wireless network paging |
| EP4406310A4 (en) * | 2023-03-21 | 2025-01-15 | ZTE Corporation | RADIO POLLING IN A WIRELESS NETWORK |
| WO2024234220A1 (en) * | 2023-05-15 | 2024-11-21 | Qualcomm Incorporated | Performing measurements associated with overlapping paging time windows |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4376517A1 (en) | 2024-05-29 |
| US20240357552A1 (en) | 2024-10-24 |
| KR20230021513A (ko) | 2023-02-14 |
| EP4376517A4 (en) | 2024-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2023014183A1 (ko) | 차세대 이동통신 시스템에서 페이징을 위한 확장된 불연속 수신에 관한 방법 및 장치 | |
| WO2019190229A1 (en) | Method and apparatus for transmitting and receiving system information | |
| WO2021201630A1 (en) | Method and apparatus for monitoring paging in extended drx cycle in a wireless communication system | |
| WO2021091270A1 (en) | Method and apparatus for selecting network slices in wireless communication system | |
| WO2019164350A1 (en) | Method and apparatus for performing communication in mobile communication system | |
| WO2021154003A1 (en) | Method and apparatus for reporting information of frequency affected by in-device coexistence interference in wireless communication system | |
| WO2019245305A1 (en) | Method and apparatus for controlling packet duplication by considering dual connectivity in next-generation mobile communication system | |
| WO2020231104A1 (en) | Method and apparatus for performing embedded radio resource control connection resume procedure in wireless communication system | |
| WO2020071704A1 (en) | Method and apparatus for providing information for vehicle communication services | |
| WO2021194219A1 (ko) | 무선 통신 시스템에서 방송 서비스의 연속성을 지원하는 방법 및 장치 | |
| WO2020027518A1 (en) | Data communication method and apparatus in wireless communication system | |
| WO2022154596A1 (en) | Method and apparatus for slice specific cell selection procedure in wireless communication system | |
| WO2019066438A1 (ko) | 무선 통신 시스템에서 부분적인 주파수 대역을 제어하는 방법 및 장치 | |
| WO2013174050A1 (zh) | 长期演进系统中删除干扰的方法、数据发送方法及装置 | |
| WO2017018783A1 (ko) | 무선 통신 시스템에서 랭크 관련 정보를 결정하는 방법 및 장치 | |
| WO2022154488A1 (ko) | 무선 통신 시스템에서 rrm(radio resource management) 측정 완화를 수행하는 방법 및 장치 | |
| WO2022030863A1 (ko) | 무선 통신 시스템에서 슬라이스 기반 시스템 접속 설정 정보를 처리하기 위한 장치 및 방법 | |
| WO2021206463A1 (en) | Method and apparatus for transmitting notification to target af in wireless communication system | |
| WO2022086226A1 (en) | Method and apparatus for relaying system information on sidelink in wireless communication system | |
| EP3811671A1 (en) | Method and apparatus for validating stored system information | |
| WO2022010162A1 (ko) | 차세대 이동통신 시스템에서 복수 개의 sim을 지원하는 방법 및 장치 | |
| WO2022010258A1 (ko) | 차세대 이동통신 시스템에서 복수 개의 subscriber identity module (sim)에 기반하여 페이징 동작을 수행하는 방법 및 장치 | |
| WO2022060059A1 (en) | Method and apparatus for transmitting and receiving paging in a wireless communication system | |
| WO2022086023A1 (ko) | 차세대 이동 통신 시스템에서 rrm 측정을 수행하는 방법 및 장치 | |
| WO2021241940A1 (en) | Method and apparatus for pdu session transfer across different access types |
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: 22853558 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 18681497 Country of ref document: US |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2022853558 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 2022853558 Country of ref document: EP Effective date: 20240222 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
