Base station method and apparatus for subsequent transmission during inactive state in wireless communication

Abstract

To provide a base station method and apparatus for subsequent transmission during an inactive state in wireless communication.SOLUTION: In a wireless communication system, a base station 904 receives 910 initial data from UE 902 in an RRC_INACTIVE state 908 while the UE has not shifted from the RRC_INACTIVE state to an RRC_CONNECTED state, transmits 914 a physical downlink control channel (PDCCH) for UE-dedicated scheduling for transmission or reception of subsequent data during an active period while the UE is in the RRC INACTIVE state, receives or transmits the transmission of the subsequent data based on the dedicated scheduling, and transmits one or more settings for the transmission or reception of the subsequent data. The one or more settings are transmitted as a part of an RRC release message and as a part of a system information block (SIB).SELECTED DRAWING: Figure 9A

Description

Technical Field

[0001] The present invention generally relates to wireless technology, and more particularly, to a method and apparatus for subsequent data transmission of a base station (BS) while a user equipment (UE) is in an inactive state.

Background Art

[0002] In a wireless communication network, 5G New Radio (NR) provides a faster network with higher capacity that can facilitate the control of the Internet of Things (IoT) such as remote devices in applications where real-time network performance is important. As the demand for faster data exchange and seamless communication increases, it has become extremely important to reduce latency and battery consumption in supporting such demands while maintaining the performance of 5G NR technology.

[0003] 5G NR supports three RRC states, including RRC CONNECTED, RRC INACTIVE, and RRC IDLE. The 5G NR protocol stack includes a control plane and a user plane, providing connectivity between the UE and the gNB or the core network (CN). Regarding the control plane for the Release-15 INACTIVE state, the UE has a non-access stratum (NAS) connection to the CN. In addition, the UE does not have dedicated access stratum (AS) resources, and the UE maintains the RRC configuration before entering the INACTIVE state. Regarding the user plane for the Release-15 INACTIVE state, the UE cannot perform any dedicated data transmission / reception. If the UE has dedicated data transmission / reception, the UE should enter the CONNECTED state. Specifically, for DL data transmission, the gNodeB pages the UE via the RAN paging mechanism to trigger the UE to enter the CONNECTED state. For uplink (UL) data transmission, the UE triggers the RACH procedure to enter the CONNECTED state. From the perspective of mobility for the Release-15 INACTIVE state, a UE in the INACTIVE state can move within the RNA (i.e., RAN notification area) without notifying the NG-RAN. The cell selection / reselection procedure is the same as in the RRC_IDLE state.

[0004] There are three general state transition scenarios between the INACTIVE state and the CONNECTED state. First, the state transition from the CONNECTED state to the INACTIVE state includes RRC release with suspend information. The state transition from the INACTIVE state to the CONNECTED state includes the RRC resume procedure. The state transition from the INACTIVE state to the IDLE state includes (1) RRC release and (2) in case of an anomaly (unable to find a cell for camping).

[0005] UEs with small-scale and low-frequency data transmissions are generally maintained in the RRC_INACTIVE state by the network. Smartphone applications such as traffic from instant messaging services and push notifications from mobile applications are some examples of small-scale and low-frequency data traffic. Connection setup and subsequent release to the INACTIVE state occur for each data transmission, resulting in unnecessary power consumption and signaling overhead.

[0006] Typically, an uplink or downlink (DL) transmission is accompanied by a feedback transmission in the DL / UL (e.g., TCP ACK, or RLC status report). If the UE performs an initial UL transmission and then returns directly to the INACTIVE state, the NW has to perform RAN paging to trigger the UE to return to the CONNECTED state for feedback reception when the NW transmits feedback in the downlink direction. Such procedures may eliminate the advantages of direct transmission in the INACTIVE state.

[0007] Therefore, there is a need for an extended mechanism for the UE to continue monitoring potential NW scheduling after the first data transmission in the INACTIVE state, thereby reducing the data transmission latency and the amount of signaling overhead that occurs during state transitions. Therefore, this extended mechanism can utilize the advantages of direct transmission in the INACTIVE state. SUMMARY OF THE INVENTION

[0008] A method and apparatus from the perspective of a base station are described. In an exemplary embodiment, a base station having a processor configured to perform operations including receiving initial data from a UE is in the RRC_INACTIVE state while the UE does not transition from the RRC_INACTIVE state to the RRC_CONNECTED state. The operations further include transmitting a physical downlink control channel (PDCCH) for UE-dedicated scheduling for transmitting or receiving subsequent data during an active period while the UE is in the RRC INACTIVE state. Further, the operations include receiving or transmitting the transmission of subsequent data based on dedicated scheduling.

[0009] In some embodiments, the processor is further configured to perform operations including transmitting one or more settings for transmitting or receiving subsequent data. In some embodiments, the one or more settings are transmitted as part of an RRC release message.

[0010] In some other embodiments, the one or more settings are transmitted as part of a System Information Block (SIB).

[0011] In some embodiments, the processor is further configured to perform operations including transmitting an indication indicating a setting to be used for transmitting or receiving subsequent data from among one or more of the settings.

[0012] In some embodiments, the processor is further configured to perform operations including transmitting a value of a timer for an active period. The value of the timer is part of one or more settings. Additionally, the monitoring of the PDCCH for transmitting or receiving subsequent data stops when the timer for the active period expires.

[0013] In some embodiments, the processor is

[0014] It is further configured to perform operations including transmitting default settings for subsequent data transmission or reception.

[0015] In some embodiments, the processor

[0016] is further configured to perform operations including transmitting an active period start indication from the base station after the initial data transmission. Monitoring of the PDCCH for subsequent data transmission or reception stops upon receiving a stop indication for the active period at the UE.

[0017] In some embodiments, the processor

[0018] is further configured to perform operations including transmitting an active period start indication to the UE after the initial data transmission. The start indication includes a value of a timer for the active period. Additionally, monitoring of the PDCCH for subsequent data transmission or reception stops when the timer for the active period expires.

[0019] In some embodiments, the start indication is layer 1 (L1) signaling.

[0020] In some other embodiments, the start indication is a medium access control (MAC) control element (CE).

[0021] In some other embodiments, the start indication is RRC signaling. The RRC signaling includes one or more settings for subsequent data transmission or reception.

[0022] In some embodiments, the processor

[0023] Further configured to perform operations including scrambling a PDCCH for UE-dedicated scheduling of subsequent data transmission or reception during an active period based on the TC-RNTI type, I-RNTI type, or CG-RNTI type of the RNTI.

[0024] In another aspect of the present disclosure, embodiments of the present disclosure also provide the methods described above.

[0025] The present disclosure is shown by way of example and is not limited to that in the figures of the accompanying drawings, in which like reference numerals indicate like elements.

Brief Description of the Drawings

[0026]

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[0027] A method and apparatus are described that enable a device of a UE to monitor potential network scheduling after initial data transmission while the UE is in the INACTIVE state. The base station receives initial data from a UE in the RRC_INACTIVE state while the UE does not transition from the RRC_INACTIVE state to the RRC_CONNECTED state. The base station transmits a Physical Downlink Control Channel (PDCCH) for UE-dedicated scheduling for subsequent data transmission or reception during the active period while the UE is in the RRC INACTIVE state. The base station receives or transmits subsequent data transmission based on dedicated scheduling. In this way, the UE can continue to monitor potential network scheduling after initial data transmission while the UE is in the INACTIVE state, thereby reducing the data transmission waiting time and the amount of signaling overhead that occurs during state transition. Therefore, this extended mechanism can utilize the advantages of data transmission while the UE is in the INACTIVE state without transitioning from the RRC_INACTIVE state to the RRC_CONNECTED state.

[0028] In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other instances, well-known components, structures, and techniques have not been shown in detail so as not to obscure the understanding of this description.

[0029] References to "some embodiments" or "embodiments" in this specification mean that a particular mechanism, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the present invention. The phrase "in some embodiments" that appears in various places in this specification does not necessarily refer to all the same embodiments.

[0030] In the following description and claims, the terms "coupled" and "connected" and their derivatives may be used. It should be understood that these terms are not intended to be synonymous with each other. "Coupled" is used to indicate that two or more elements, which may or may not be in direct physical or electrical contact with each other, cooperate or interact with each other. "Connected" is used to indicate the establishment of communication between two or more elements that are coupled to each other.

[0031] The processes shown in the following figures are executed by processing logic that includes hardware (e.g., circuitry, dedicated logic, etc.), software (such as that executed on a general-purpose computer system or a dedicated machine), or a combination of both. Although those processes are described below from the perspective of several sequential operations, it should be understood that some of the operations described can be executed in a different order. Furthermore, some operations can be executed in parallel rather than sequentially.

[0032] The terms "server", "client", and "device" are intended to generally refer to a data processing system rather than to a particular form factor of a server, client, and / or device.

[0033] FIG. 1 shows a simplified exemplary wireless communication system according to some embodiments. Note that the system of FIG. 1 is merely an example of a possible system, and the features of the present disclosure can be implemented in any of various systems as desired.

[0034] As shown in the figure, an exemplary wireless communication system includes a base station 102A, which communicates with one or more user devices 106A, 106B,... 106N via a transmission medium. Each of the user devices may be referred to herein as a "user equipment" (UE). Thus, the user device 106 is referred to as a UE or a UE device.

[0035] The base station (BS) 102A may be a base transceiver station (BTS) or a cellular base station (referred to as a "cellular base station"), and may include hardware that enables wireless communication with the UEs 106A to 106N.

[0036] The communication area (or coverage area) of the base station may be referred to as a "cell". The base station 102A and the UEs 106 may communicate via a transmission medium using any of various radio access technologies (RATs), also referred to as wireless communication technologies or telecommunications standards, such as GSM, UMTS, LTE, LTE-Advanced (LTE-A), 5G New Radio (5G NR), HSPA, 3GPP2 CDMA2000 (e.g., 1xRTT, 1xEV-DO, HRPD, eHRPD), etc., associated with, for example, the WCDMA or TD-SCDMA air interface. Note that when the base station 102A is implemented in the context of LTE, the base station 102A may alternatively be referred to as an "eNodeB" or "eNB". Note that when the base station 102A is implemented in the context of 5G NR, the base station 102A may alternatively be referred to as a "gNodeB" or "gNB".

[0037] As shown in the figure, the base station 102A may also be equipped to communicate with the network 100 (e.g., among various possibilities, in particular, the core network of a cellular service provider, a telecommunications network such as a Public Switched Telephone Network (PSTN), and / or the Internet). Thus, the base station 102A can facilitate communication between user devices and / or between a user device and the network 100. In particular, the cellular base station 102A can provide various telecommunications capabilities such as voice, SMS, and / or data services to the UEs 106.

[0038] Base stations 102A and other similar base stations (such as base stations 102B...102N) operating according to the same or different cellular communication standards can thus be provided as a network of cells that can provide continuous or nearly continuous overlapping services to UEs 106A~106N and similar devices across a geographic area via one or more cellular communication standards.

[0039] Thus, as shown in FIG. 1, base station 102A can function as a "serving cell" for UEs 106A~106N, and each UE 106 can also receive signals from one or more other cells (which may be provided by base stations 102B~102N and / or any other base stations) that can be referred to as "neighboring cells" (if possible, within their communication ranges). Such cells can also facilitate communication between user devices and / or communication between a user device and network 100. Such cells may include "macro" cells, "micro" cells, "pico" cells, and / or cells providing various other granularities of service area size. For example, base stations 102A~102B shown in FIG. 1 may be macro cells, and base station 102N may be a micro cell. Other configurations are also possible.

[0040] In some embodiments, base station 102A may be a next-generation base station, such as a 5G New Radio (5G NR) base station, or a "gNB". In some embodiments, the gNB can be connected to a conventional Evolved Packet Core (EPC) network and / or an NR Core (NRC) network. Additionally, a gNB cell can include one or more Transition and Reception Points (TRPs). Additionally, a UE capable of operating according to 5G NR may be connected to one or more TRPs within one or more gNBs.

[0041] It should be noted that UE106 may be capable of communicating using multiple wireless communication standards. For example, UE106 may be configured to communicate using at least one cellular communication protocol (e.g., GSM, UMTS (associated with, e.g., WCDMA or TD-SCDMA air interface), LTE, LTE-A, 5G NR, HSPA, 3GPP2 CDMA2000 (e.g., 1xRTT, 1xEV-DO, HRPD, eHRPD), etc.) in addition to wireless networking (e.g., Wi-Fi) and / or peer-to-peer wireless communication protocols (e.g., Bluetooth, Wi-Fi peer-to-peer, etc.). UE106 may also be configured to communicate using, in addition to or instead of, one or more Global Navigational Satellite Systems (GNSS, e.g., GPS or GLONASS), one or more mobile television broadcast standards (e.g., ATSC-M / H or DVB-H), and / or, if desired, any other wireless communication protocol. Other combinations of wireless communication standards (including three or more wireless communication standards) are also possible.

[0042] Figure 2 shows user equipment 106A and 106B that can communicate directly with each other (also known as device-to-device or sidelink). Sidelink communication can utilize dedicated sidelink channels and sidelink protocols to facilitate direct communication between devices. For example, a physical sidelink control channel (PSCCH) can be used for actual data transmission between devices, a physical sidelink shared channel (PSSCH) can be used to carry sidelink control information (SCI), a physical sidelink feedback channel (PSFCH) can be used for HARQ feedback information, and a physical sidelink broadcast channel (PSBCH) can be used for synchronization. Further details are discussed in other sections.

[0043] In addition, sidelink communication can be used for communication between vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P), vehicle-to-network (V2N), and other types of direct communication.

[0044] According to some embodiments, UE106A can also communicate with base station 102 via uplink communication and downlink communication. Each UE can be a device having cellular communication capabilities such as a mobile phone, a handheld device, a computer, or a tablet, or substantially any type of wireless device. UE106A - B may include a processor configured to execute program instructions stored in a memory. By executing such stored instructions, UE106A - B can execute any of the method embodiments described herein. Alternatively or in addition, UE106A - B may include programmable hardware elements such as a field - programmable gate array (FPGA) configured to execute any of the method embodiments described herein, or any portion of any of the method embodiments described herein.

[0045] UE106A - B can include one or more antennas for communicating using one or more wireless communication protocols or technologies. In some embodiments, UE106A - B can be configured to communicate, for example, using CDMA2000 (1xRTT / 1xEV - DO / HRPD / eHRPD) or LTE using a single shared radio, and / or using GSM or LTE using a single shared radio. The shared radio may be coupled to a single antenna to perform wireless communication, or may be coupled to multiple antennas (e.g., for MIMO). Generally, a radio can include any combination of a baseband processor, analog RF signal processing circuitry (including, for example, filters, mixers, oscillators, amplifiers, etc.), or digital processing circuitry (e.g., for digital modulation and other digital processing). Similarly, a radio may implement one or more receive and transmit chains using the above - mentioned hardware. For example, UE106A - N can share one or more portions of receive and / or transmit chains among multiple wireless communication technologies such as those described above.

[0046] In some embodiments, UE106A - B may include separate transmit and / or receive chains for each wireless communication protocol that the UE is configured to communicate with using it (e.g., including separate antennas and other radio components). As a further possibility, UE106A - B may include one or more radios shared among multiple wireless communication protocols, and one or more radios exclusively used by a single wireless communication protocol. For example, UE106A - B may include a shared radio for communicating using either LTE or 5G NR (or, LTE or 1xRTT, or LTE or GSM), and separate radios for communicating using each of Wi-Fi and Bluetooth. Other configurations are also possible.

[0047] FIG. 3 shows an exemplary simplified block diagram of a communication device 106 according to some embodiments. Note that the block diagram of the communication device in FIG. 3 is merely an example of a possible communication device. According to an embodiment, the communication device 106 may be, among other devices, a user equipment (UE) device, a mobile device or mobile station, a wireless device or wireless station, a desktop computer or computing device, a mobile computing device (e.g., a laptop computer, a notebook computer, or a portable computing device), a tablet, and / or a combination of devices. As shown in the figure, the communication device 106 may include a set 300 of components configured to perform core functions. For example, this set of components may be implemented as a system on chip (SOC) that may include parts for various purposes. Alternatively, this set 300 of components may be implemented as separate components or groups of components for various purposes. The set 300 of components may be coupled (e.g., communicatively, directly or indirectly) to various other circuits of the communication device 106.

[0048] For example, the communication device 106 may include various types of memory (e.g., including NAND flash 310), an input / output interface such as a connector I / F 320 (for connecting to, for example, a computer system, a dock, a charging station, an input device such as a microphone, a camera, a keyboard, and an output device such as a speaker), a display 360 that may be integrated with the communication device 106 or may be external to the communication device 106, a cellular communication circuit 330 for 5G NR, LTE, GSM, etc., and a short-range wireless communication circuit 329 (e.g., Bluetooth (registered trademark) and WLAN circuits). In some embodiments, the communication device 106 may include a wired communication circuit (not shown) such as a network interface card for Ethernet, for example.

[0049] As shown in the figure, the cellular communication circuit 330 may be coupled to one or more antennas such as antennas 335 and 336 (e.g., communicatively, directly or indirectly). The short-range wireless communication circuit 329 may also be coupled to one or more antennas such as antennas 337 and 338 (e.g., communicatively, directly or indirectly) as shown in the figure. Alternatively, in addition to or instead of being coupled to antennas 337 and 338 (e.g., communicatively, directly or indirectly), the short-range wireless communication circuit 329 may be coupled to antennas 335 and 336 (e.g., communicatively, directly or indirectly). The short-range wireless communication circuit 329 and / or the cellular communication circuit 330 may include a plurality of receive chains and / or a plurality of transmit chains for receiving and / or transmitting a plurality of spatial streams in a multiple-input multiple-output (MIMO) configuration or the like.

[0050] In some embodiments, as further described below, the cellular communication circuit 330 may include dedicated receive chains (e.g., a first receive chain for LTE and a second receive chain for 5G NR) for a plurality of radio access technologies (RATs) (e.g., communicatively, directly or indirectly including and / or coupled to dedicated processors and / or radios). Additionally, in some embodiments, the cellular communication circuit 330 may include a single transmit chain that can be switched between radios dedicated to a particular RAT. For example, a first radio may be dedicated to a first RAT, such as LTE, and communicate with a dedicated receive chain and a transmit chain shared with an additional radio, such as a second radio, and the second radio may be dedicated to a second RAT, such as 5G NR, and communicate with a dedicated receive chain and the shared transmit chain.

[0051] The communication device 106 may also include one or more user interface elements and / or be configured for use with one or more user interface elements. The user interface elements may include a display 360 (which may be a touch screen display), a keyboard (which may be a separate keyboard or implemented as part of a touch screen display), a mouse, a microphone, and / or a speaker, one or more cameras, one or more buttons, and / or any of various other elements capable of providing information to the user and / or receiving or interpreting user input, such as any of various elements.

[0052] The communication device 106 may further include one or more smart cards 345 that include SIM (Subscriber Identity Module) functionality, such as one or more UICC (Universal Integrated Circuit Card) cards 345.

[0053] As shown in the figure, the SOC 300 may include a processor(s) 302 that can execute program instructions for the communication device 106, and a display circuit 304 that can perform graphic processing and provide a display signal to the display 360. The processor(s) 302 may be coupled to a Memory Management Unit (MMU) 340, and the MMU 340 may receive addresses from the processor(s) 302 and convert these addresses to locations within memory (e.g., memory 306, Read Only Memory (ROM) 350, NAND flash memory 310), and / or other circuits or devices such as the display circuit 304, short-range wireless communication circuit 229, cellular communication circuit 330, connector I / F 320, and / or display 360. The MMU 340 may be configured to perform memory protection and page table translation or setup. In some embodiments, the MMU 340 may be included as part of the processor(s) 302.

[0054] As described above, the communication device 106 may be configured to communicate using wireless and / or wired communication circuits. The communication device 106 may also be configured to determine physical downlink shared channel scheduling resources for user equipment devices and base stations. Further, the communication device 106 may be configured to group and select CCs from a wireless link and determine virtual CCs from the selected group of CCs. The wireless device may also be configured to perform physical downlink resource mapping based on an aggregate resource matching pattern of a group of CCs.

[0055] As described herein, communication device 106 may include hardware components and software components for implementing the above features for determining physical downlink shared channel scheduling resources for communication device 106 and the base station. The processor 302 of communication device 106 may be configured to implement some or all of the features described herein, for example, by executing program instructions stored in a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively (or in addition), processor 302 may be configured as a programmable hardware element such as a field programmable gate array (FPGA), or as an application specific integrated circuit (ASIC). Alternatively (or in addition), processor 302 of communication device 106 may be configured to implement some or all of the features described herein in conjunction with any one or more of the other components 300, 304, 306, 310, 320, 329, 330, 340, 345, 350, 360.

[0056] In addition, as described herein, processor 302 may include one or more processing elements. Thus, processor 302 may include one or more integrated circuits (ICs) configured to perform the functions of processor 302. In addition, each integrated circuit may include circuits (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of processor(s) 302.

[0057] Furthermore, as described herein, the cellular communication circuit 330 and the short-range wireless communication circuit 329 can each include one or more processing elements. In other words, one or more processing elements may be included within the cellular communication circuit 330, and similarly, one or more processing elements may be included within the short-range wireless communication circuit 329. Accordingly, the cellular communication circuit 330 may include one or more integrated circuits (ICs) configured to perform the functions of the cellular communication circuit 330. Additionally, each integrated circuit may include circuits (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of the cellular communication circuit 230. Similarly, the short-range wireless communication circuit 329 may include one or more ICs configured to perform the functions of the short-range wireless communication circuit 32. Additionally, each integrated circuit may include circuits (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of the short-range wireless communication circuit 329.

[0058] FIG. 4 shows an exemplary block diagram of a base station 102 according to some embodiments. Note that the base station of FIG. 4 is merely an example of a possible base station. As shown in the figure, the base station 102 may include a processor(s) 404 capable of executing program instructions for the base station 102. The processor(s) 404 may also be coupled to a memory management unit (MMU) 440, and the memory management unit 440 is configured to receive addresses from the processor(s) 404 and convert those addresses into locations within a memory (e.g., memory 460 and read-only memory (ROM) 450) or other circuits or devices.

[0059] The base station 102 may include at least one network port 470. The network port 470 may be coupled to a telephone network and configured to provide access to the telephone network to a plurality of devices such as the UE device 106 as described above in FIGS. 1 and 2.

[0060] The network port 470 (or an additional network port) may also or alternatively be configured to couple to a cellular network, such as the core network of a cellular service provider. The core network can provide mobility-related services and / or other services to a plurality of devices such as the UE device 106. In some cases, the network port 470 can couple to a telephone network via the core network, and / or the core network can provide a telephone network (e.g., between other UE devices served by a cellular service provider).

[0061] In some embodiments, the base station 102 may be a next-generation base station, such as a 5G New Radio (5G NR) base station, or a "gNB". In such embodiments, the base station 102 may be connected to a legacy evolved packet core (EPC) network and / or an NR core (NRC) network. Additionally, the base station 102 may be considered a 5G NR cell and may include one or more transmit and receive points (TRPs). Additionally, a UE capable of operating according to 5G NR may be connected to one or more TRPs within one or more gNBs.

[0062] The base station 102 may include at least one antenna 434, and possibly a plurality of antennas. At least one antenna 434 may be configured to operate as a radio transceiver and may be further configured to communicate with the UE device 106 via the radio 430. The antenna 434 communicates with the radio 430 via a communication chain 432. The communication chain 432 may be a receive chain, a transmit chain, or both. The radio 430 may be configured to communicate via various wireless communication standards including, but not limited to, 5G NR, LTE, LTE-A, GSM, UMTS, CDMA2000, Wi-Fi, etc.

[0063] The base station 102 can be configured to perform wireless communication using multiple wireless communication standards. In some cases, the base station 102 can include multiple radios, which can enable the base station 102 to communicate according to multiple wireless communication technologies. For example, as one possibility, the base station 102 may include an LTE radio for performing communication according to LTE, and a 5G NR radio for performing communication according to 5G NR. In such a case, the base station 102 may be capable of operating as both an LTE base station and a 5G NR base station. As another possibility, the base station 102 may include a multi-mode radio, which can be capable of performing communication according to any of multiple wireless communication technologies (e.g., 5G NR and Wi-Fi, LTE and Wi-Fi, LTE and UMTS, LTE and CDMA2000, UMTS and GSM, etc.).

[0064] As further described below in this specification, BS102 can include hardware and software components for implementing or supporting the implementation of the features described in this specification. The processor 404 of the base station 102 can be configured to implement or support the implementation of some or all of the methods described in this specification, for example, by executing program instructions stored in a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively, the processor 404 may be configured as a programmable hardware element such as a field-programmable gate array (FPGA), or as an application-specific integrated circuit (ASIC), or as a combination thereof. Alternatively (or in addition), the processor 404 of BS102 can be configured to implement or support the implementation of some or all of the features described in this specification, together with one or more of the other components 430, 432, 434, 440, 450, 460, 470.

[0065] In addition, as described herein, the processor(s) 404 may be composed of one or more processing elements. In other words, one or more processing elements may be included within the processor(s) 404. Thus, the processor(s) 404 can include one or more integrated circuits (ICs) configured to perform the functions of the processor(s) 404. In addition, each integrated circuit can include circuits (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of the processor(s) 404.

[0066] Furthermore, as described herein, the radio 430 may be composed of one or more processing elements. In other words, one or more processing elements may be included within the radio 430. Thus, the radio 430 can include one or more integrated circuits (ICs) configured to perform the functions of the radio 430. In addition, each integrated circuit may include circuits (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of the radio 430.

[0067] FIG. 5 shows an exemplary simplified block diagram of a cellular communication circuit according to some embodiments. Note that the block diagram of the cellular communication circuit of FIG. 5 is merely an example of a possible cellular communication circuit. According to an embodiment, the cellular communication circuit 330 may be included in a communication device such as the communication device 106 described above. As described above, the communication device 106 may be, among other devices, a user equipment (UE) device, a mobile device or mobile station, a wireless device or base station, a desktop computer or computing device, a mobile computing device (e.g., a laptop, notebook, or portable computing device), a tablet, and / or a combination of devices.

[0068] The cellular communication circuit 330 may be coupled (e.g., directly or indirectly communicably) to one or more antennas such as antennas 335a - b and 336, as shown (in FIG. 3). In some embodiments, the cellular communication circuit 330 may include dedicated receive chains (e.g., a first receive chain for LTE and a second receive chain for 5G NR) for multiple RATs (e.g., including dedicated processors and / or radios and / or communicably directly or indirectly coupled to dedicated processors and / or radios). For example, as shown in FIG. 5, the cellular communication circuit 330 may include a modem 510 and a modem 520. The modem 510 may be configured for communication according to a first RAT, e.g., LTE or LTE - A, etc., and the modem 520 may be configured for communication according to a second RAT, e.g., 5G NR, etc.

[0069] As shown in the figure, the modem 510 may include one or more processors 512 and a memory 516 that communicates with the processor 512. The modem 510 may communicate with a Radio Frequency (RF) front - end 530. The RF front - end 530 can include circuitry for transmitting and receiving wireless signals. For example, the RF front - end 530 may include a receive circuitry (RX) 532 and a transmit circuitry (TX) 534. In some embodiments, the receive circuitry 532 may communicate with a downlink (DL) front - end 550 that may include circuitry for receiving wireless signals via the antenna 335a.

[0070] Similarly, the modem 520 may include one or more processors 522 and a memory 526 that communicates with the processor 522. The modem 520 may communicate with an RF front end 540. The RF front end 540 can include circuitry for transmitting and receiving wireless signals. For example, the RF front end 540 may include a receiving circuit 542 and a transmitting circuit 544. In some embodiments, the receiving circuit 542 may communicate with a DL front end 560 that can include circuitry for receiving wireless signals via an antenna 335b.

[0071] In some embodiments, a switch 570 may couple the transmitting circuit 534 to an uplink (UL) front end 572. Additionally, the switch 570 may couple the transmitting circuit 544 to the UL front end 572. The UL front end 572 can include circuitry for transmitting wireless signals via an antenna 336. Thus, when the cellular communication circuit 330 receives an instruction to transmit according to a first RAT (e.g., as supported via the modem 510), the switch 570 may be switched to a first state that enables the modem 510 to transmit a signal (e.g., via a transmission chain that includes the transmitting circuit 534 and the UL front end 572) according to the first RAT. Similarly, when the cellular communication circuit 330 receives an instruction to transmit according to a second RAT (e.g., as supported via the modem 520), the switch 570 may be switched to a second state that enables the modem 520 to transmit a signal (e.g., via a transmission chain that includes the transmitting circuit 544 and the UL front end 572) according to the second RAT.

[0072] As described herein, the modem 510 can include the above-described features, or hardware and software components that implement a periodic resource portion for the user equipment device and the base station, as well as various other techniques described herein. The processor 512 can be configured to execute some or all of the features described herein, for example, by executing program instructions stored in a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively (or in addition), the processor 512 can be configured as a programmable hardware element such as a field programmable gate array (FPGA), or as an application specific integrated circuit (ASIC). Alternatively (or in addition), the processor 512 can be configured to execute some or all of the features described herein in conjunction with one or more of the other components 530, 532, 534, 550, 570, 572, 335, and 336.

[0073] In addition, as described herein, the processor 512 can include one or more processing elements. Accordingly, the processor 512 may include one or more integrated circuits (ICs) configured to perform the functions of the processor 512. In addition, each integrated circuit may include circuits (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of the processor 512.

[0074] As described herein, the modem 520 can include the above functions for selecting periodic resources on the radio link between the UE and the base station, as well as the hardware and software components for implementing various other techniques described herein. The processor 522 can be configured to implement some or all of the features described herein, for example, by executing program instructions stored in a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively (or additionally), the processor 522 can be configured as a programmable hardware element such as a field-programmable gate array (FPGA), or as an application-specific integrated circuit (ASIC). Alternatively (or additionally), the processor 522 can be configured to implement some or all of the features described herein in conjunction with one or more of the other components 540, 542, 544, 550, 570, 572, 335, and 336.

[0075] In addition, as described herein, the processor 522 can include one or more processing elements. Thus, the processor 522 may include one or more integrated circuits (ICs) configured to execute the functions of the processor 522. In addition, each integrated circuit may include circuits (e.g., a first circuit, a second circuit, etc.) configured to execute the functions of the processor 522.

[0076] FIG. 6 shows a state transition from the RRC_INACTIVE state 610 triggered by a UE (e.g., 602) to the RRC_CONNECTED state 620. The RRC_INACTIVE state 610 hides the radio connection state from the core network to reduce signaling overhead and tunnel establishment between the radio network and the core network. In a smartphone, for example, a background application such as an instant messenger continues to exchange data with the network to keep the connection alive frequently even when the smartphone screen is turned off.

[0077] The network (e.g., 604) can instruct the UE 602 to transition to the RRC_INACTIVE state 610 using an RRC release message that includes "suspendConfig". When the UE needs to transition from the RRC_INACTIVE state 610 to the RRC_CONNECTED state 620, the resumption of the interrupted RRC connection can be initiated by the upper layer to perform RNA update, or by the RRC layer, or by RAN paging from the NG-RAN. The RRC connection resumption procedure reactivates the AS security and re-establishes the SRB(s) and DRB(s).

[0078] The procedure for transitioning from the RRC_INACTIVE state 610 to the RRC_CONNECTED state 620 is triggered by the UE, for example, in response to paging or when the UE 602 has uplink data. While the UE 602 is in the RRC_INACTIVE state, the UE triggers the RRC connection reactivation procedure by sending an RRCResumeRequest to the network (e.g., the base station or gNB 604). During the RRC_INACTIVE state, the UE 602 remains CM-CONNECTED. Upon receiving the RRCResumeRequest 612, the network 604 retrieves the UE context request 616 based on the UE context ID, performs the necessary mobility actions, and responds with a UE context response 618. Upon receiving the RRCResume 614, the UE 602 confirms the successful completion of the RRC connection resumption procedure by sending an RRCResumeComplete (DCCH) message 622 on SRB1 using the AM mode.

[0079] Figure 7B shows an extension of embodiment 700 described in the present disclosure, in contrast to the conventional procedure (e.g., Figure 7A) for subsequent data transmission 710 when UE 702 is in the INACTIVE state 706. In contrast to the conventional procedure, embodiment 700 described in the present disclosure can be used for subsequent transmission 710 when UE 702 is in the INACTIVE state after initial data transmission 708, thereby avoiding the network 704 from performing RAN paging to trigger UE 702 to enter the CONNECTED state for feedback reception. The described embodiment 700 enables data (e.g., small-scale data) transmission in the RRC_INACTIVE state without a state transition to the RRC_CONNECTED state. In this way, UE energy efficiency can be improved when small-scale data is transmitted in the RRC INACTIVE state.

[0080] As shown in Figure 8, uplink (UL) or downlink data transmission is accompanied by feedback transmission (e.g., TCP ACK, or RLC status report). If an initial UL transmission is performed while UE 802 is in the INACTIVE state, it then returns to the INACTIVE state. After the UE returns to the INACTIVE state, when the network transmits feedback in the downlink direction, the network has to perform RAN paging to trigger the UE to enter the CONNECTED state for feedback reception. Such a procedure undermines the advantage of direct transmission in the INACTIVE state. In contrast, the embodiments described herein enable the UE to continue monitoring the physical downlink control channel (PDCCH) for UE-dedicated scheduling for a period (i.e., the active period) for potential subsequent data transmission or reception after the UE has performed an initial uplink (UL) data transmission. The network can control subsequent data transmission or reception based on explicit configuration or timer-based control.

[0081] Figure 9A shows a communication flow 900 between a UE 902 and a network 904 according to some embodiments. In some embodiments, for example, the UE 902 receives a Radio Resource Control (RRC) release message from the base station 904 at 906. The RRC release message includes a suspend configuration for transitioning the UE to the RRC_INACTIVE state 908. After the UE 902 receives the RRC release message, the UE 902 enters the RRC_INACTIVE state 908. Next, while the UE is in the RRC_INACTIVE state 908, the UE 902 performs an initial data transmission at 910 without transitioning from the RRC_INACTIVE state to the RRC_CONNECTED state. While the UE is in the RRC INACTIVE state 908, the UE 902 monitors a Physical Downlink Control Channel (PDCCH) for UE-dedicated scheduling of subsequent data transmission or reception during the active period 912. Thereafter, the UE 902 performs subsequent data transmission or reception based on the monitoring of the PDCCH.

[0082] In some other embodiments, the base station 904 receives initial data from the UE 902 in the RRC_INACTIVE state 908 while the UE 902 does not transition from the RRC_INACTIVE state 908 to the RRC_CONNECTED state. The base station 904 transmits a Physical Downlink Control Channel (PDCCH) for UE-dedicated scheduling of subsequent data transmission or reception during the active period 912 while the UE 902 is in the RRC INACTIVE state 908. The base station 904 receives or transmits subsequent data transmission based on dedicated scheduling.

[0083] In some other embodiments, the base station 904 transmits an indication indicating a setting to be used for subsequent data transmission or reception from among one or more of the settings.

[0084] Figure 9B shows a communication flow 920 between a UE 902 and a network 904 according to some embodiments. In some embodiments, the UE 902 receives from a base station 904 one or more settings for subsequent data transmission or reception. In these embodiments, the one or more settings are received as part of an RRC release message at 922. In these embodiments, the one or more settings are also received as part of a System Information Block (SIB) at 924. The SIB is broadcast by the base station 904.

[0085] In some embodiments, the UE receives from the base station an indication indicating a setting to be used for subsequent data transmission or reception from among one or more of the settings.

[0086] Figure 9C shows a communication flow 940 between a UE 902 and a network 904 according to some embodiments. In some embodiments, the UE 902 receives at 942 a value of a timer 924 for an active period. The value of the timer 924 is part of one or more settings. Then, the UE 902 stops monitoring a PDCCH for subsequent data transmission or reception when the timer 924 for the active period expires.

[0087] In some embodiments, the base station 904 transmits a value of a timer for an active period. The value of the timer is part of one or more settings. Monitoring of the PDCCH for subsequent data transmission or reception stops when the timer for the active period expires. In some embodiments, the base station 904 transmits default settings for subsequent data transmission or reception.

[0088] In some embodiments, the UE 902 applies default settings for subsequent data transmission or reception.

[0089] In some embodiments (see FIG. 9A), after the initial data transmission 910, the UE 902 receives an active period start indication from the base station 904 at 914. When the UE 902 receives a stop indication for the active period from the base station 904 at 916, it stops monitoring the PDCCH for subsequent data transmission or reception.

[0090] In some embodiments (see FIG. 9C), after the initial data transmission, the UE 902 receives an active period start indication from the base station. The start indication includes the value of the active period timer 924. The UE stops monitoring the PDCCH for subsequent data transmission or reception when the active period timer 924 expires.

[0091] In some embodiments, after the initial data transmission, the base station 904 transmits an active period start indication from the base station. Monitoring of the PDCCH for subsequent data transmission or reception stops when the UE receives a stop indication for the active period.

[0092] In some embodiments, after the initial data transmission, the base station 904 transmits an active period start indication to the UE. The start indication includes the value of the active period timer. Monitoring of the PDCCH for subsequent data transmission or reception stops when the active period timer expires.

[0093] In some embodiments, the start indication is layer 1 (L1) signaling.

[0094] In some other embodiments, the start indication is a media access control (MAC) control element (CE).

[0095] In some embodiments, the start indication is RRC signaling. The RRC signaling includes one or more settings for subsequent data transmission or reception.

[0096] In some embodiments, baseband 904 scrambles the PDCCH for UE-dedicated scheduling for the transmission or reception of subsequent data during the active period based on the TC-RNTI type, I-RNTI type, or CG-RNTI type of the RNTI.

[0097] In some embodiments, the UE verifies the PDCCH for UE-dedicated scheduling for the transmission or reception of subsequent data during the active period based on the TC-RNTI type, I-RNTI type, or CG-RNTI type of the RNTI. The UE behavior while the UE is in the active period is the same as that in the conventional CONNECTED mode. For example, UE-dedicated scheduling can be scrambled via one or more RNTIs. (1) T-C-RNTI (assigned by the network via the initial transmission), (2) I-RNTI or shortened I-RNTI, and (3) CG-RNTI (when the initial transmission is performed via pre-CG resources based on one or more pre-CG settings). One or more pre-CG settings refer to pre-configured physical uplink shared channel (PUSCH) resource settings.

[0098] In some embodiments, the UE monitors UE-dedicated scheduling within the initial bandwidth part (BWP). The UE also monitors UE-dedicated scheduling within the common search space for the transmission or reception of subsequent data during the active period.

[0099] The layer 1 (L1) behavior while the UE is in the active period is the same as that in the conventional CONNECTED mode settings. L1 does not support CA / DC, but supports Nta maintenance, power control, L1 CSI reporting, L1 ACK / NACK, BFD, etc. Transmissions are restricted to the initial BWP, and / or PDCCH scheduling is only in the common search space to reduce the UE complexity.

[0100] The L2 behavior during the active period of the UE is the same as that in the conventional CONNECTED mode settings. MAC: BSR, PHR, DRX, UL / DL HARQ, TA, CG / SPS, new LCP restrictions. Regarding the RLC / PDCP mode: does not support duplicate / split bearers. SDAP follows the conventional CONNECTED mode.

[0101] In the case of serving cell measurement, the measurement requirements are the same as those in the CONNECTED mode, with optional support for L3 filters and optionally the same as the measurement report. For neighboring cell measurement, it is the same as the conventional IDLE / INACTIVE measurement.

[0102] In some embodiments, the RLM is the same as the CONNECTED mode RLM procedure.

[0103] In some other embodiments, it does not support RLM or is not based on the setting.

[0104] FIG. 11 shows a communication flow 1100 between a UE 1102 and a base station according to some embodiments. In some embodiments, at 1108, the UE 1102 receives an active period start indication for the transmission or reception of subsequent data from the base station of the current cell 1104 after the initial data transmission, and an indication indicating the measurement settings. The measurement settings are based on the SIB3 or SIB4 settings associated with the UE in the IDLE or INACTIVE state. The measurement settings include at least a predetermined threshold.

[0105] In some embodiments, the UE receives dedicated signaling including measurement settings for measurements during the active period.

[0106] Figure 10 shows a communication flow 1000 between UE 1002 and a base station. In some embodiments, the UE maintains RLM and IDLE / INACTIVE state measurements 1010. For example, if the UE radio quality is lower than a threshold (or RLF is triggered), UE 1002 triggers a resume procedure at 1008. When UE 1002 moves to another cell 1006, UE 1002 triggers a resume procedure / direct data transmission at the newly accessed cell 1006 at 1012.

[0107] In some embodiments, UE 1102 determines whether one or more conditions 1110 for triggering a measurement event are satisfied, and the one or more conditions 1110 include that the radio quality of the current cell is lower than a received predetermined threshold and the radio quality of an adjacent cell is higher than the predetermined threshold. UE 1102 performs adjacent cell measurements in response to determining that one or more conditions for triggering a measurement event are satisfied.

[0108] In some embodiments, at 1112, UE 1102 triggers a measurement report in response to determining that one or more conditions for triggering a measurement event are satisfied. At 1114, a dedicated RRC message including an RRC resume message is received. The dedicated RRC message triggers UE 1102 to transition to the CONNECTED state 1116. UE 1102 enters the CONNECTED state 1116. At 1118, UE 1102 transmits an RRC ResumeComplete message to the base station of the current camping cell 1104. At 1120, UE 1102 receives a handover (HO) command to initiate a handover of UE 1102 to an adjacent cell 1106. At 1122, UE 1102 transmits a handover CommandComplete message to the base station of the adjacent cell 1106.

[0109] Figure 12 shows a communication flow 1200 between UE 1202 and a base station according to some embodiments. In some embodiments, at 1208, UE 1202 triggers a measurement report in response to determining that one or more conditions 1212 for triggering a measurement event are satisfied. At 1210, UE 1202 receives a dedicated RRC message including an RRC resume message and an HO command for starting a handover of UE 1202 to an adjacent cell 1206. The dedicated RRC message triggers UE 1202 to transition to the CONNECTED state 1214. UE 1202 enters the CONNECTED state 1214. At 1216, UE 1202 transmits an RRC ResumeComplete message to the base station of the adjacent cell 1206.

[0110] Figure 13 shows a communication flow 1300 between UE 1302 and a base station according to some embodiments. In some embodiments, UE 1302 triggers a measurement report in response to determining that one or more conditions 1308 for triggering a measurement event are satisfied. At 1310, UE 1302 transmits an RRC resume request message to the base station of the adjacent cell 1306 or executes data transmission.

[0111] Figure 14 shows a communication flow 1400 between UE 1402 and a base station according to some embodiments. In some embodiments, at 1408, UE 1402 transmits a UE preference to the base station of the current cell 1404. The UE receives, at 1410, a dedicated RRC message including an RRC resume message and an HO command for starting a handover of UE 1402 to an adjacent cell 1406. The dedicated RRC message triggers UE 1402 to transition to the CONNECTED state 1412. The UE enters the CONNECTED state. UE 1402 transmits an RRC ResumeComplete message to the base station of the adjacent cell 1406.

[0112] The various parts of the above-described can be implemented by a logic circuit such as a dedicated logic circuit, or by a microcontroller or other form of processing core that executes program code instructions. Therefore, the processes taught by the above considerations can be executed by program code such as machine-executable instructions, and this program code causes a machine that executes these instructions to perform specific functions. In this context, a "machine" can be a machine that converts intermediate form (or "abstract") instructions into processor-specific instructions (e.g., an "abstract execution environment" such as a "virtual machine" (e.g., Java virtual machine), interpreter, common language runtime, high-level language virtual machine, etc.), and / or an electronic circuit (e.g., a "logic circuit" implemented with transistors) disposed on a semiconductor chip that is designed to execute instructions, such as a general-purpose processor and / or a dedicated processor. The processes taught by the above considerations can also be executed by an electronic circuit (instead of or in combination with a machine) that is designed to execute those processes (or a part of the process) without executing program code.

[0113] The present invention also relates to an apparatus for performing the operations described herein. This apparatus can be specially constructed for the required purpose, or can also include a general-purpose computer selectively activated or reconfigured by a computer program stored in the computer. Such a computer program can be stored in a computer-readable storage medium, each of which is coupled to a computer system bus, such as, but not limited to, any type of disk including floppy disks, optical disks, CD-ROMs, and magneto-optical disks, read-only memory (ROM), RAM, EPROM, EEPROM, magnetic or optical cards, or any type of medium suitable for storing electronic instructions.

[0114] A machine-readable medium includes any method for storing or transmitting information in a form readable by a machine (e.g., a computer). For example, a machine-readable medium includes read-only memory (ROM), random access memory (RAM), magnetic disk storage media, optical storage media, flash memory devices, and the like.

[0115] A manufactured article can be used to store program code. The manufactured article storing the program code may be embodied as, but is not limited to, one or more memories (e.g., one or more flash memories, random access memories (static, dynamic, or otherwise)), optical disks, CD-ROMs, DVD ROMs, EPROMs, EEPROMs, magnetic or optical cards, or other types of machine-readable media suitable for storing electronic instructions. The program code can also be downloaded from a remote computer (e.g., a server) to a requesting computer (e.g., a client) via a data signal embodied in a propagation medium (e.g., via a communication link (e.g., a network connection)).

[0116] The above "Mode for Carrying Out the Invention" is presented from the perspective of algorithms and symbolic representations of operations on data bits inside a computer memory. These descriptions and representations of algorithms are tools used by those skilled in the data processing art to most effectively convey the essence of their work to other persons skilled in the art. An algorithm, as used herein and generally, is considered to be a sequence of self-consistent operations that produce a desired result. Those operations require physical manipulation of physical quantities. Usually, but not necessarily, these quantities take the form of electrical or magnetic signals capable of being stored, transferred, combined, compared, and otherwise manipulated. Mainly for reasons of common use, it has been found convenient in some cases to refer to these signals as bits, values, elements, symbols, characters, terms, numbers, and the like.

[0117] However, it should be noted that all of these terms, and all terms of a similar nature, are associated with appropriate physical quantities and are nothing more than convenient labels applied to these quantities. In particular, unless specifically stated otherwise, as is apparent from the above discussion, throughout the description, discussions using terms such as "select", "determine", "receive", "form", "group", "aggregate", "generate", "delete" or similar terms manipulate data represented as physical (electronic) quantities in the registers or memories of a computer system and transform them into other data similarly represented as physical quantities in a computer system memory or register, or in other such information storage devices, transmission devices, or display devices, and refer to the operations and processes of a computer system or a similar electronic computing device.

[0118] The processes and displays presented herein are not inherently related to any particular computer or other device. Various general-purpose systems can be used with programs according to the teachings herein, or it may prove convenient to construct more specialized devices for performing the described operations. The required structures for these various systems will be apparent from the following description. Furthermore, the present invention is not described in relation to any particular programming language. It will be understood that the teachings of the present invention as described herein can be implemented using various programming languages.

[0119] It should be fully understood that the use of personally identifiable information should comply with privacy policies and practices generally recognized as meeting or exceeding industry or government requirements for maintaining user privacy. In particular, personally identifiable information data should be managed and handled to minimize the risk of unintended or unauthorized access or use, and the nature of the permitted use should be clearly indicated to the user.

[0120] The foregoing description merely explains some exemplary embodiments of the present invention. Those skilled in the art can easily recognize from such discussions, the accompanying drawings, and the claims that various modifications can be made without departing from the spirit and scope of the present invention.

Claims

1. Receiving initial data from the UE in the RRC_INACTIVE state while the UE does not transition from the RRC_INACTIVE state to the RRC_CONNECTED state; Transmitting a Physical Downlink Control Channel (PDCCH) for UE-specific scheduling for transmission or reception of subsequent data during an active period while the UE is in the RRC INACTIVE state; Receiving or transmitting the transmission of the subsequent data based on the dedicated scheduling; A base station (BS) comprising a processor configured to perform operations including the above.

2. The processor is further configured to perform operations including: Transmitting one or more settings for the transmission or reception of the subsequent data; The BS according to claim 1, wherein the processor is further configured to perform operations including the above.

3. The BS according to claim 2, wherein the one or more settings are transmitted as part of the RRC release message.

4. The BS according to claim 2, wherein the one or more settings are transmitted as part of a System Information Block (SIB).

5. The processor is further configured to perform operations including: Transmitting an indication indicating a setting to be used for the transmission or reception of the subsequent data from among the one or more of the settings; The BS according to any one of claims 2 to 4, wherein the processor is further configured to perform operations including the above.

6. The processor is further configured to perform operations including: Transmitting a value of a timer for the active period, wherein the value of the timer is part of the one or more settings, and monitoring of the PDCCH for the transmission or reception of the subsequent data stops when the timer expires during the active period; The BS according to claim 2, wherein the processor is further configured to perform operations including the above.

7. The processor is further configured to perform operations including: Transmitting default settings for the transmission or reception of the subsequent data; The BS according to claim 1, wherein the processor is further configured to perform operations including the above.

8. The processor is further configured to perform operations including transmitting an indication of the start of the active period from the base station after the initial data transmission, and monitoring of the PDCCH for the transmission or reception of the subsequent data stops when the UE receives an indication to stop the active period. The BS according to claim 1.

9. The processor is further configured to perform operations including: After the initial data transmission, sending to the UE a start instruction for the active period, the start instruction including a value of a timer for the active period, and monitoring of the PDCCH for the transmission or reception of the subsequent data stopping when the timer for the active period expires. The BS according to claim 1, configured to perform operations including.

10. The BS according to claim 8 or 9, wherein the start instruction is layer 1 (L1) signaling.

11. The BS according to claim 8 or 9, wherein the start instruction is a media access control (MAC) control element (CE).

12. The BS according to claim 8 or 9, wherein the start instruction is RRC signaling, and the RRC signaling includes one or more settings for the transmission or reception of the subsequent data.

13. The processor is scrambling the PDCCH for UE-dedicated scheduling for the transmission or reception of the subsequent data during the active period based on a TC-RNTI type, I-RNTI type, or CG-RNTI type of RNTI. The BS according to claim 1, configured to perform operations including.

14. Receiving initial data from the UE in the RRC_INACTIVE state while the UE does not transition from the RRC_INACTIVE state to the RRC_CONNECTED state, Transmitting a physical downlink control channel (PDCCH) for UE-dedicated scheduling for the transmission or reception of subsequent data during the active period while the UE is in the RRC INACTIVE state, Receiving or transmitting the transmission of the subsequent data based on the dedicated scheduling. A method including.

15. Further including transmitting one or more settings for the transmission or reception of the subsequent data. The method according to claim 14, further including.

16. The method according to claim 15, wherein the one or more settings are transmitted as part of the RRC release message.

17. The method according to claim 15, wherein the one or more settings are transmitted as part of a system information block (SIB).

18. Transmitting an indication indicating a setting to be used for the transmission or reception of the subsequent data from among the one or more of the settings. The method according to any one of claims 15 to 17, further comprising

19. Transmitting a value of a timer for the active period, wherein the value of the timer is part of the one or more settings, and monitoring of the PDCCH for the transmission or reception of the subsequent data stops when the timer for the active period expires The method according to claim 15, further comprising

20. Transmitting a default setting for the transmission or reception of the subsequent data The method according to claim 14, further comprising

21. Further comprising transmitting, after the initial data transmission, an indication of the start of the active period from the base station, and monitoring of the PDCCH for the transmission or reception of the subsequent data stops when an indication of the end of the active period is received at the UE The method according to claim 14

22. After the initial data transmission, transmitting to the UE an indication of the start of the active period, the indication including a value of a timer for the active period, and monitoring of the PDCCH for the transmission or reception of the subsequent data stops when the timer for the active period expires The method according to claim 14, further comprising

23. The method according to claim 20 or 21, wherein the indication is layer 1 (L1) signaling

24. The method according to claim 20 or 21, wherein the indication is a media access control (MAC) control element (CE)

25. The method according to claim 20 or 21, wherein the indication is RRC signaling, and the RRC signaling includes one or more settings for the transmission or reception of the subsequent data

26. Scrambling the PDCCH for UE-dedicated scheduling for the transmission or reception of the subsequent data during the active period based on a TC-RNTI type, I-RNTI type, or CG-RNTI type of RNTI The method according to claim 14, further comprising

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