Measurement enhancement for NTN DL coverage enhancement
By reporting capabilities and determining measurement parameters for SSB/PBCH periodicities greater than 160 ms, the UE and base station optimize measurement behaviors in NTN networks, addressing inefficiencies and ensuring accurate, power-efficient DL coverage.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-10-03
- Publication Date
- 2026-04-09
AI Technical Summary
Existing technologies face challenges in efficiently managing SSB/PBCH periodicities greater than 160 ms in non-terrestrial networks (NTN), leading to inadequate measurement parameters for serving and neighbor cells, particularly in RRC Idle and Connected modes.
The UE and base station are equipped with processing circuitry to handle SSB/PBCH periodicities greater than 160 ms by reporting capabilities and determining measurement parameters based on DRX cycles and SSB/PBCH/SMTC periodicities, adjusting measurement behaviors to support DL coverage enhancement in NTN scenarios.
This approach ensures accurate and power-efficient measurements for serving and neighbor cells, enhancing DL coverage in NTN networks by optimizing measurement parameters for various periodicities and modes.
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Figure CN2024123206_09042026_PF_FP_ABST
Abstract
Description
Measurement Enhancement for NTN DL Coverage EnhancementBackground
[0001] A user equipment (UE) may establish a connection to at least one of multiple different networks or types of networks. For example, the UE may use a non-terrestrial network (NTN) to access a radio access network (RAN) and public land mobile network (PLMN) . The term NTN refers to a network utilizing non-terrestrial components (e.g., one or more satellites) for network access.Summary
[0002] Some example embodiments are related to an apparatus having processing circuitry configured to generate, for transmission to a base station, a first user equipment (UE) capability comprising an indication of support of a downlink (DL) coverage enhancement for a non-terrestrial network (NTN) and generate, for transmission to a base station, a second UE capability comprising an indication of support of one or more periodicities of a Synchronization Signal Block (SSB) , Physical Broadcast Channel (PBCH) or SS / PBCH Block Measurement Timing Configuration (SMTC) .
[0003] Other example embodiments are related to an apparatus having processing circuitry configured to process, based on signaling from a base station, a periodicity of a Synchronization Signal Block (SSB) , Physical Broadcast Channel (PBCH) or SS / PBCH Block Measurement Timing Configuration (SMTC) for a non-terrestrial network (NTN) , determine an operating mode is one of a Radio Resource Control (RRC) Idle mode, an RRC Inactive mode or an RRC Connected mode and determine, based on at least the operating mode, measurement parameters for measurements to be performed on one or more cells of the NTN.Brief Description of the Drawings
[0004] Fig. 1 shows an example network arrangement according to various example embodiments.
[0005] Fig. 2 shows an example user equipment (UE) according to various example embodiments.
[0006] Fig. 3 shows an example base station according to various example embodiments.
[0007] Fig. 4 shows an example non-terrestrial network (NTN) architecture according to various example embodiments.
[0008] Fig. 5 shows tables having the legacy detection / measure / evaluation sample numbers for neighbor cells from 3GPP TS38.133 section 4.2C. 2.3 and 4.2C. 2.4.
[0009] Fig. 6 shows an example method for a UE to determine measurement parameters for an NTN network according to various example embodiments.Detailed Description
[0010] The example embodiments may be further understood with reference to the following description and the related appended drawings, wherein like elements are provided with the same reference numerals. The example embodiments are related to operations performed by a user equipment (UE) or a network component in a non-terrestrial network (NTN) . Specifically, the operations relate to scenarios where a UE supports Synchronization Signal Block (SSB) / Physical Broadcast Channel (PBCH) periodicities greater than 160 ms.
[0011] The example embodiments are described with regard to a user equipment (UE) . However, reference to a UE is merely provided for illustrative purposes. The example embodiments may be utilized with any electronic component that may establish a connection to a network and is configured with the hardware, software, and / or firmware to exchange information and data with the network. Therefore, the UE as described herein is used to represent any appropriate electronic component.
[0012] The example embodiments are also described with regard to a Fifth Generation (5G) New Radio (NR) network. However, reference to 5G NR is merely provided for illustrative purposes. The example embodiments may be utilized with any appropriate type of network that may establish a connection to a UE and exchange information and data with the UE (e.g., 5G-Advanced networks, 6G networks, etc. ) .
[0013] The example embodiments are further described with regard to a 5G NR network integrated with an NTN utilizing one or more satellites to provide UE access to the 5G NR radio access network (RAN) . A satellite-based NTN may be deployed by a public land mobile network (PLMN) and may be further integrated with a terrestrial network (TN) of the PLMN. Throughout this description, the non-terrestrial component is generally described as a satellite. However, any reference to a satellite is only for illustrative purposes and the example embodiments may apply to other types of non-terrestrial components, e.g., airplanes, unmanned aerial vehicles (UAVs) , etc.
[0014] The example embodiments are described with reference to Signal Block (SSB) / Physical Broadcast Channel (PBCH) periodicity. Specifically, SSB / PBCH periodicities that are greater than 160 ms. The SSB periodicity may be signaled to the UE using System Information Block (SIB) 1. However, throughout this description, where the SSB / PBCH periodicity is described, this may also apply to the SS / PBCH Block Measurement Timing Configuration (SMTC) periodicity, e.g., the example embodiments may be implemented for SSB / PBCH periodicities or SMTC periodicities greater than a 160 ms. The SMTC periodicity may be signaled to the UE using SIB 2 or SIB 4.
[0015] The example embodiments are also described with reference to a Discontinuous Reception (DRX) cycle. The DRX cycle may be a mechanism used in mobile communication to conserve power. For example, there may be scheduled time windows during which data transfer may occur. Outside of the scheduled time window, a device (e.g., UE) may enter a low power state where at least some aspects of data exchange processing are not required to be performed. For example, outside of the scheduled time windows, the UE may not expect to receive any transmissions from the network (e.g., UE reception) and the UE may be able to turn off parts of its radio circuitry and / or suspend certain operations to save power because the UE does not expect to receive any communications from the network.
[0016] To support downlink (DL) coverage enhancement for NTN networks, there may be scenarios where the SSB / PBCH periodicity is greater than 160 ms, e.g., the periodicity may be set to 40ms, 80 ms, 160 ms, 320ms, 640ms, etc. If a UE attempts to use an SSB / PBCH having a periodicity greater than 160 ms, the UE behavior may be adjusted to account for the longer periodicity. This behavior may include altering, for example, ssb-PeriodicityServingCell, measurement gap periodicity, SMTC configuration, and ssb-Periodicity-r17 for NonCellDefiningSSB-r17. Furthermore, the field description of nAndPagingFrameOffset may be enhanced to consider the SSB periodicity higher than 160ms.
[0017] The example embodiments provide operations for a UE to report capabilities relating to supporting SSB / PBCH / SMTC periodicities greater than 160 ms to an NTN. The example embodiments also provide operations for a UE to determine measurement parameters for both a serving cell and neighbor cells depending on the SSB / PBCH / SMTC periodicities and / or a length of a Discontinuous Reception (DRX) cycle. Each of the example embodiments will be discussed in greater detail below.
[0018] Fig. 1 shows an example network arrangement 100 according to various example embodiments. The example network arrangement 100 includes a UE 110. The UE 110 may be any type of electronic component that is configured to communicate via a network, e.g., mobile phones, tablet computers, desktop computers, smartphones, phablets, embedded devices, wearables, Internet of Things (IoT) devices, etc. the example of a single UE 110 is merely provided for illustrative purposes. An actual network arrangement may include any number of UEs being used by any number of users.
[0019] The UE 110 may be configured to communicate with one or more networks. In the example of the network arrangement 100, the network with which the UE 110 may wirelessly communicate is a 5G NR RAN 120. However, the UE 110 may also communicate with other types of networks (e.g., Sixth Generation (6G) networks, 5G advanced networks, 5G cloud RAN, a next generation RAN (NG-RAN) , a long-term evolution (LTE) RAN, a legacy cellular network, a wireless local area network (WLAN) , etc. ) and the UE 110 may also communicate with networks over a wired connection. With regard to the example embodiments, the UE 110 may establish a connection with the 5G NR RAN 120. Therefore, the UE 110 may have at least a 5G NR chipset to communicate with the NR RAN 120.
[0020] The 5G NR RAN 120 may be a portion of a PLMN that may be deployed by a network carrier (e.g., Verizon, AT&T, T-Mobile, etc. ) . The 5G NR RAN 120 may include, for example, nodes or base stations (Node Bs, eNodeBs, HeNBs, eNBS, gNBs, gNodeBs, macrocells, microcells, small cells, femtocells, etc. ) that are configured to send and receive traffic from UEs that are equipped with the appropriate cellular chip set.
[0021] In the example network arrangement 100, the 5G NR RAN 120 includes a base station (e.g., gNB 120A) that may be in a terrestrial network (TN) deployment or a non-terrestrial network (NTN) deployment. For example, a satellite-based system may be integrated with the 5G NR RAN 120 to provide network access to the UE 110 in the NTN deployment and the base station may, in some cases, be located on a non-terrestrial component, e.g., a satellite. An example NTN network architecture will be described in greater detail below with reference to Fig. 4.
[0022] The UE 110 may connect to the 5G NR-RAN 120 via the gNB 120A. Any association procedure may be performed for the UE 110 to connect to the 5G NR-RAN 120. For example, as discussed above, the 5G NR-RAN 120 may be associated with a particular cellular provider where the UE 110 and / or the user thereof has a contract and credential information (e.g., stored on a SIM card) . Upon detecting the presence of the 5G NR-RAN 120, the UE 110 may transmit the corresponding credential information to associate with the 5G NR-RAN 120. More specifically, the UE 110 may associate with a specific node (e.g., the gNB 120A) . However, as mentioned above, reference to the 5G NR-RAN 120 is merely for illustrative purposes and any appropriate type of RAN may be used.
[0023] In addition to the 5G NR RAN 120, the network arrangement 100 also includes a cellular core network 130, the Internet 140, an IP Multimedia Subsystem (IMS) 150, and a network services backbone 160. The cellular core network 130 may be considered to be the interconnected set of components that manages the operation and traffic of the cellular network. The cellular core network 130 also manages the traffic that flows between the cellular network and the Internet 140.
[0024] The IMS 150 may be generally described as an architecture for delivering multimedia services to the UE 110 using the IP protocol. The IMS 150 may communicate with the cellular core network 130 and the Internet 140 to provide the multimedia services to the UE 110. The network services backbone 160 is in communication either directly or indirectly with the Internet 140 and the cellular core network 130. The network services backbone 160 may be generally described as a set of components (e.g., servers, network storage arrangements, etc. ) that implement a suite of services that may be used to extend the functionalities of the UE 110 in communication with the various networks.
[0025] Fig. 2 shows an example UE 110 according to various example embodiments. The UE 110 will be described with regard to the example network arrangement 100 of Fig. 1. The UE 110 may include a processor 205, a memory arrangement 210, a display device 215, an input / output (I / O) device 220, a transceiver 225 and other components 230. The other components 230 may include, for example, an audio input device, an audio output device, a power supply, a data acquisition device, ports to electrically connect the UE 110 to other electronic devices, etc.
[0026] The processor 205 may be configured to execute a plurality of engines of the UE 110. For example, the engines may include an NTN measurement engine 235. The NTN measurement engine may perform various operations related to the example embodiments introduced herein. For example, the NTN measurement engine 235 may report a UE capability related to supporting SSB / PBCH / SMTC periodicities and determining measurement parameters for a serving cell or neighbor cells based on the SSB / PBCH / SMTC periodicity and / or a DRX cycle length. These and other operations are described in greater detail below.
[0027] The above referenced engine 235 being an application (e.g., a program) executed by the processor 205 is merely provided for illustrative purposes. The functionality associated with the engine 235 may also be represented as a separate incorporated component of the UE 110 or may be a modular component coupled to the UE 110, e.g., an integrated circuit with or without firmware. For example, the integrated circuit may include input circuitry to receive signals and processing circuitry to process the signals and other information. The engine may also be embodied as one application or separate applications. In addition, in some UEs, the functionality described for the processor 205 is split among two or more processors such as a baseband processor and an applications processor. The example embodiments may be implemented in any of these or other configurations of a UE.
[0028] The memory arrangement 210 may be a hardware component configured to store data related to operations performed by the UE 110. The display device 215 may be a hardware component configured to show data to a user while the I / O device 220 may be a hardware component that enables the user to enter inputs. The display device 215 and the I / O device 220 may be separate components or integrated together such as a touchscreen.
[0029] The transceiver 225 may be a hardware component configured to establish a connection with the 5G NR-RAN 120, an LTE-RAN (not pictured) , a legacy RAN (not pictured) , a WLAN (not pictured) , etc. Accordingly, the transceiver 225 may operate on a variety of different frequencies or channels (e.g., set of consecutive frequencies) . The transceiver 225 includes circuitry configured to transmit and / or receive signals (e.g., control signals, data signals) . Such signals may be encoded with information implementing any one of the methods described herein. The processor 205 may be operably coupled to the transceiver 225 and configured to receive from and / or transmit signals to the transceiver 225. The processor 205 may be configured to encode, decode and / or process signals (e.g., signaling from a base station of a network) for implementing any one of the methods described herein.
[0030] Fig. 3 shows an example base station 300 according to various example embodiments. The base station 300 may represent the gNB 120A or any other type of access node through which the UE 110 may establish a connection and manage network operations.
[0031] The base station 300 may include a processor 305, a memory arrangement 310, an input / output (I / O) device 315, a transceiver 320, and other components 325. The other components 325 may include, for example, an audio input device, an audio output device, a battery, a data acquisition device, ports to electrically connect the base station 300 to other electronic devices and / or power sources, antenna elements, antenna panels, etc.
[0032] The processor 305 may be configured to execute a plurality of engines for the base station 300. For example, the engines may include an NTN measurement configuration engine 330. The NTN measurement configuration engine 330 may perform various operations related to the example embodiments. These operations may include but are not limited to receiving a UE capability related to supporting SSB / PBCH / SMTC periodicities and configuring measurement parameters for the UE to perform measurements on a serving cell or neighbor cells based on the SSB / PBCH / SMTC periodicity and / or a DRX cycle length. These and other operations are described in greater detail below.
[0033] The above noted engine 330 being an application (e.g., a program) executed by the processor 305 is only an example. The functionality associated with the engine 330 may also be represented as a separate incorporated component of the base station 300 or may be a modular component coupled to the base station 300, e.g., an integrated circuit with or without firmware. For example, the integrated circuit may include input circuitry to receive signals and processing circuitry to process the signals and other information. In addition, in some base stations, the functionality described for the processor 305 is split among a plurality of processors (e.g., a baseband processor, an applications processor, etc. ) . The example embodiments may be implemented in any of these or other configurations of a base station.
[0034] The memory arrangement 310 may be a hardware component configured to store data related to operations performed by the base station 300. The I / O device 315 may be a hardware component or ports that enable a user to interact with the base station 300.
[0035] The transceiver 320 may be a hardware component configured to exchange data with the UE 110 and any other UEs in the network arrangement 100. The transceiver 320 may operate on a variety of different frequencies or channels (e.g., set of consecutive frequencies) . Therefore, the transceiver 320 may include one or more components to enable the data exchange with the various networks and UEs. The transceiver 320 includes circuitry configured to transmit and / or receive signals (e.g., control signals, data signals) . Such signals may be encoded with information implementing any one of the methods described herein. The processor 305 may be operably coupled to the transceiver 320 and configured to receive from and / or transmit signals to the transceiver 320. The processor 305 may be configured to encode, decode and / or process signals (e.g., signaling from a UE) for implementing any one of the methods described herein.
[0036] Fig. 4 shows an example non-terrestrial network (NTN) architecture 400 according to various example embodiments. An NTN may relate to any network using non-terrestrial components, such as satellites, airplanes, unmanned aerial vehicles (UAVs) , etc., to provide network services to a user terminal.
[0037] The NTN architecture 400 represents a network arrangement including one or more satellites, which in this example shows a satellite 410 that is integrated with a radio access network (RAN) 440. The RAN 440 may be, for example, the 5G NR RAN 120 described above with respect to Fig. 1. The NTN architecture 400 includes a gateway 430 connecting the RAN 440 with the NTN components. In the NTN architecture 400 of Fig. 4, the gateway 430 and the satellites 410 communicates via feeder links 412. In some NTN deployments, satellites may be served by several gateways simultaneously.
[0038] The satellite 410 provide network services to a UE 110 via a service link (not shown) . The satellite 410 and the RAN 420 may implement either a transparent payload or a regenerative payload. A transparent payload refers to an arrangement where the satellite 410 receives signals and transmits an amplified version of the signal, with a frequency conversion. For example, the satellite 410 may receive uplink communications from the UE 110 on service link frequencies and transmit an amplified version of the signal to the gateway 430 on feeder link frequencies or may receive downlink communications via the gateway 430 on feeder link frequencies and transmit an amplified version of the signal to the UE 110 on service link frequencies. A regenerative payload refers to an arrangement where the satellite 410 acts as a distributed unit (DU) or a base station (e.g., a gNB) , wherein received signals are regenerated with signal-processing techniques (e.g., demodulation, decoding, switching, encoding, modulation, etc. ) before being re-transmitted.
[0039] The example NTN architecture 400 shown in Fig. 4 is not intended to limit the example embodiments in any way. NTNs may be integrated with the 5G NR RAN and / or other networks in any one of a variety of manners. For example, a typical satellite-based NTN may comprise a low earth orbit (LEO) constellation including an array of satellites and gateways with broad interconnectivity via ground-to-ground station (G2G) links, satellite-to-satellite (S2S) links, ground-to-satellite (G2S) links, and satellite-to-ground (S2G) links. Other types of satellite-based NTNs include geostationary-orbiting (GEO) satellites or medium-earth-orbiting (MEO) satellites.
[0040] The different types of NTNs each have respective strengths and weaknesses and may be deployed in a variety of scenarios, depending on the goal to be achieved, e.g., broad coverage across a large region, concentrated coverage in an urban environment or along a highly trafficked route, etc. Thus, the NTN architecture 400 described in Fig. 4 is merely provided for illustrative purposes. The example embodiments may apply to any of these or other configurations of an NTN.
[0041] As described above, a UE that supports DL coverage enhancements for NTN may support SSB / PBCH / SMTC periodicities that are greater than 160 ms. However, the use of the longer SSB / PBCH / SMTC periodicities may result in changes to measurement parameters for serving cell and neighbor cell measurements. The example embodiments address these changes.
[0042] In a first aspect of the example embodiments, a UE may report a capability to the network with reference to support for different SSB periodicities in addition to the UE reporting a capability to support the DL coverage enhancement feature for NTN.
[0043] In some example embodiments, the UE may indicate the SSB periodicity that the UE supports. For example, candidate values may be {40 ms, 80 ms, 160 ms, 320 ms, 640 ms} . The UE may report that it supports one or multiple of the candidate values. The UE may report this capability as a per-band indication, a per-UE indication, or a per-Frequency Range (FR) indication, e.g., the UE may have two indications for FR1 and FR2 separately when the UE supports FR1 and FR2.
[0044] In other example embodiments, the UE may indicate support for the SSB periodicities that are greater than 160 ms, e.g., the UE only reports SSB periodicities that are greater than 160 ms that the UE supports. The UE may report this capability as a per-band indication, a per-UE indication, or a per-FR indication.
[0045] In further example embodiments, the UE may indicate whether the UE supports SSB periodicities greater than 160 ms, e.g., a binary indication of supporting SSB periodicities greater than 160 ms or not supporting SSB periodicities greater than 160 ms. The UE may report this capability as a per-band indication, a per-UE indication, or a per-FR indication.
[0046] In a second aspect of the example embodiments, measurement parameters related to measurements performed by the UE when in the NTN DL coverage enhancement scenario are described. In this second aspect, there may be two categories of measurements. The first category is measurements performed in the Radio Resource Control (RRC) Idle mode or Inactive mode. The second category is measurements performed in the RRC Connected mode.
[0047] When in the Idle / Inactive mode, it may be described that the UE may perform measurements (e.g., Synchronization Signal-Reference Signal Received Power (SS-RSRP) or SS-Reference Signal Received Quality (SS-RSRQ) on the serving cell to evaluate the cell selection criterion (S) for the serving cell at least once every M1*N1 DRX cycle. M1 and N1 may be values that are defined in standards, e.g., Third Generation Partnership (3GPP) Technical Specifications (TS) including but not limited to TS 38.304. These values may consider factors such as power saving and beam sweeping. The values of M1 and N1 are used in the example embodiments in a manner consistent with the definition in the standards.
[0048] Starting with the first category of measurements, e.g., measurements performed by the UE in the Idle / Inactive mode, there may be various options for determining a sample period for performing serving cell evaluations and measurements.
[0049] In a first option, when the SSB periodicity <=160ms, the UE may measure the SS-RSRP and SS-RSRQ level of the serving cell and evaluate the cell selection criterion (S) for the serving cell at least once every M1*N1 DRX cycle. When the SSB periodicity >=320ms, the UE may measure the SS-RSRP and SS-RSRQ level of the serving cell and evaluate the cell selection criterion (S) for the serving cell at least once every max {M1*N1 DRX cycle, SSB periodicity} . Thus, in this option, when the SSB periodicity >=320ms, the UE may extend the time for measuring the SS-RSRP and SS-RSRQ level of the serving cell because the M1*N1 DRX cycle value may be less than the SSB periodicity which means that no SSBs may occur in the M1*N1 DRX cycle value and no measurements may be performed.
[0050] In a second option, when the SSB periodicity <=160ms, the UE may measure the SS-RSRP and SS-RSRQ level of the serving cell and evaluate the cell selection criterion S for the serving cell at least once every M1*N1 DRX cycle. When the SSB periodicity >=320ms, the UE may measure the SS-RSRP and SS-RSRQ level of the serving cell and evaluate the cell selection criterion S for the serving cell at least once every M1*N1* Max {DRX cycle, SSB periodicity} . In this option, the values of M1 and N1 are outside of the max function meaning that whether the DRX cycle or the SSB periodicity is used as the time value in the max function, the M1 and N1 values that scale the time value and may consider power saving and beam sweeping are considered whether the DRX cycle or the SSB periodicity is used.
[0051] In a third option, when the SSB periodicity <=160ms, the UE may measure the SS-RSRP and SS-RSRQ level of the serving cell and evaluate the cell selection criterion S for the serving cell at least once every M1*N1 DRX cycle. When the SSB periodicity >=320ms, the network may indicate the UE measurement cycle to follow for serving cell evaluation, e.g., following DRX cycle or SSB periodicity, or scaled DRX cycle or SSB periodicity where scaled refers to applying the M1 and N1 values.
[0052] As described above, while the example embodiments are described with reference to the SSB periodicity, the example embodiments may also use the SMTC periodicity, e.g., where the values of the SSB periodicity were evaluated in the above examples, the SMTC periodicity may be evaluated in the same manner.
[0053] In addition, there may be various options for determining a total evaluation period for performing serving cell evaluations and measurements for the first category of measurements, e.g., measurements performed by the UE in the Idle / Inactive mode. This total evaluation period may include multiple measurements, a time interval between the multiple measurements and time to perform the evaluation, e.g. deliver measurement results to higher layers of the UE. The evaluation period may be based on a value of Nserv which is a number of consecutive DRX cycles that the serving cell does not fulfil the cell selection criterion S, the UE may initiate the measurements of all neighbor cells indicated by the serving cell.
[0054] In a first option, the evaluation period may depend on the length of the DRX cycle. In a first case of the first option, the DRX cycle may be 320ms. In this first case of the first option, when the SSB periodicity<=160ms, Nserv may be M1*N1*4 *DRX cycle. When the SSB periodicity = 320ms, Nserv may be any of (1) M1*N1*4*DRX cycle, (2) M1*N1*4*SSB periodicity, (3) M1*N1*4*K*DRX cycle, where K is a factor >1, or (4) M1*N1*4*K*SSB periodicity, where K is a factor >1. When the SSB periodicity = 640ms, Nserv may be any of (1) M1*N1*4*K*DRX cycle, where K is a factor >1, (2) M1*N1*4*max {DRX cycle, SSB periodicity} , or (3) 4*max {M1*N1*DRX cycle, SSB periodicity} . In these examples, the value of K may be defined in standards, e.g., 3GPP standards, and may be an integer or non-integer value.
[0055] In a second case of the first option, the DRX cycle may be 640ms. In this second case of the first option, when the SSB periodicity <=320ms, Nserv may be M1*N1*4 *DRX cycle. When the SSB periodicity =640ms, Nserv may be any of (1) M1*N1*4*DRX cycle, (2) M1*N1*4*SSB periodicity, (3) M1*N1*4*K*DRX cycle, where K is a factor >1, (4) M1*N1*4*K*SSB periodicity, where K is a factor >1 or (5) 4*max {M1*N1*DRX cycle, SSB periodicity} . In these examples, the value of K may be defined in standards, e.g., 3GPP standards, and may be an integer or non-integer value.
[0056] In a second option, the network may indicate a measurement cycle for the UE to follow for the serving cell evaluation, e.g., following DRX cycle, SSB periodicity, scaled DRX cycle or scaled SSB periodicity, where the scaled refers to a K factor being provided by the network or defined in standards.
[0057] As described above, while the example embodiments are described with reference to the SSB periodicity, the example embodiments may also use the SMTC periodicity, e.g., where the values of the SSB periodicity were evaluated in the above examples, the SMTC periodicity may be evaluated in the same manner.
[0058] The example embodiments may also provide various options for determining a total evaluation period for performing neighbor cell detection / measurements / evaluation for the first category of measurements, e.g., measurements performed by the UE in the Idle / Inactive mode.
[0059] In a first option, the detection / measure / evaluation period may depend on the length of the DRX cycle. In first case of the first option, the length of the DRX cycle may be 320ms. In this first case of the first option, when the SSB periodicity <=160ms, the detection / measure / evaluation period may be the same as currently defined in 3GPP TS38.133 section 4.2C. 2.3 and 4.2C. 2.4, e.g., the legacy detection / measure / evaluation sample number. Fig. 5 shows tables having the legacy detection / measure / evaluation sample numbers for neighbor cells from 3GPP TS38.133 section 4.2C. 2.3 and 4.2C. 2.4.
[0060] When the SSB periodicity =320ms, the detection / measure / evaluation period may be any of (1) the legacy detection / measure / evaluation sample number*legacy scaling factor *DRX cycle, (2) legacy detection / measure / evaluation sample number*legacy scaling factor *SSB periodicity, (3) legacy detection / measure / evaluation sample number*legacy scaling factor *K*DRX cycle, where K is a new factor >1, (4) legacy detection / measure / evaluation sample number*legacy scaling factor *K*SSB periodicity, where K is a new factor >1, or (5) legacy detection / measure / evaluation sample number*legacy scaling factor *max {DRX cycle, SSB periodicity} . In these examples, the value of K may be defined in standards, e.g., 3GPP standards, and may be an integer or non-integer value.
[0061] When the SSB periodicity = 640ms, the detection / measure / evaluation period may be any of (1) legacy detection / measure / evaluation sample number*K*DRX cycle, where K is a factor >1, (2) legacy detection / measure / evaluation sample number*max {DRX cycle, SSB periodicity} , or (3) legacy detection / measure / evaluation sample number*legacy scaling factor *max {DRX cycle, SSB periodicity} . In these examples, the value of K may be defined in standards, e.g., 3GPP standards, and may be an integer or non-integer value.
[0062] In a second case of the first option, the DRX cycle may be 640ms. In this second case of the first option, when the SSB periodicity <=320ms, the detection / measure / evaluation period may be the legacy defined in 3GPP TS38.133 section 4.2C. 2.3 and 4.2C. 2.4. When the SSB periodicity = 640ms, the detection / measure / evaluation period may be any of (1) legacy detection / measure / evaluation sample number*legacy scaling factor *DRX cycle, (2) legacy detection / measure / evaluation sample number*legacy scaling factor *SSB periodicity, (3) or legacy detection / measure / evaluation sample number*legacy scaling factor *K*DRX cycle, where K is a new factor >1, (4) legacy detection / measure / evaluation sample number*legacy scaling factor *K*SSB periodicity, where K is a new factor >1, or (5) legacy detection / measure / evaluation sample number*legacy scaling factor *max {DRX cycle, SSB periodicity} . In these examples, the value of K may be defined in standards, e.g., 3GPP standards, and may be an integer or non-integer value.
[0063] In a second option, the network may indicate a measurement cycle for the UE to follow for the neighbor cell evaluation, e.g., following DRX cycle, SSB periodicity, scaled DRX cycle or scaled SSB periodicity, where the scaled refers to a K factor being provided by the network or defined in standards.
[0064] As described above, while the example embodiments are described with reference to the SSB periodicity, the example embodiments may also use the SMTC periodicity, e.g., where the values of the SSB periodicity were evaluated in the above examples, the SMTC periodicity may be evaluated in the same manner.
[0065] The example embodiments also provide various options for determining a sample period for performing serving cell evaluations and measurements for the second category of measurements, e.g., measurements performed by the UE in the Connected mode. These example embodiments may apply to measurement gap (MG) measurements of neighbor cells or gapless measurements of neighbor cells.
[0066] Initially, the gapless based neighbor cell identification, measurement and SSB index reading period is described. A first option may be based on the length of the DRX cycle. In a first case of the first option, the length of the DRX cycle may be 320ms. In this first case of the first option, when the SSB periodicity <= 320ms, the detection / measure / SSB-index-reading period may be the same as the legacy period defined in 3GPP TS38.133 section 9.2C and 9.3C, e.g., max(600ms, ceil (1.5 x 5 x Kp x Klayer1_measurement) x Kmulti_SMTC x max(SMTC period, DRX cycle) ) x CSSFintra. This is referred to as the legacy detection / measure / SSB-index-reading sample number below. In this example, the detection / measure / SSB-index-reading period may also be the legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *K*max (SSB periodicity, DRX cycle) ) , where K is a new factor >1. In these examples, the value of K may be defined in standards, e.g., 3GPP standards, and may be an integer or non-integer value.
[0067] When the SSB periodicity=640ms, the detection / measure / SSB-index-reading period may be any of (1) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *DRX cycle, (2) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *SSB periodicity, (3) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *K*DRX cycle, where K is a new factor >1, (4) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *K*SSB periodicity, where K is a new factor >1, or (5) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *max {DRX cycle, SSB periodicity} . In these examples, the value of K may be defined in standards, e.g., 3GPP standards, and may be an integer or non-integer value.
[0068] In a second case of the first option, the length of the DRX cycle may be >320ms. In this second case of the first option, when the SSB periodicity = 640ms, the detection / measure / SSB-index-reading period may be any of (1) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *DRX cycle, (2) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *SSB periodicity, (3) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *K*DRX cycle, where K is a new factor >1, (4) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *K*SSB periodicity, where K is a new factor >1, (5) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *max {DRX cycle, SSB periodicity} , or (6) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *K*max {DRX cycle, SSB periodicity} , where K is a new factor >1. In these examples, the value of K may be defined in standards, e.g., 3GPP standards, and may be an integer or non-integer value.
[0069] In a second option, the network may indicate a measurement cycle for the UE to follow for the gapless neighbor cell evaluation, e.g., following DRX cycle, SSB periodicity, scaled DRX cycle or scaled SSB periodicity, where the scaled refers to a K factor being provided by the network or defined in standards.
[0070] As described above, while the example embodiments are described with reference to the SSB periodicity, the example embodiments may also use the SMTC periodicity, e.g., where the values of the SSB periodicity were evaluated in the above examples, the SMTC periodicity may be evaluated in the same manner.
[0071] The following describes the example embodiments related to a measurement gap (MG) based neighbor cell identification, measurement and SSB index reading period. A first option may be based on the length of the DRX cycle. In a first case of the first option, the length of the DRX cycle may be <=320ms. In this first case of the first option, when the SSB periodicity <= 320ms, the detection / measure / SSB-index-reading period may reuse the legacy detection / measure / SSB-index-reading period defined in 3GPP TS38.133 section 9.2C and 9.3C, referred to herein as the legacy detection / measure / SSB-index-reading sample number. In this example, the detection / measure / SSB-index-reading period may also be the legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *K*max (SSB periodicity, DRX cycle, Measurement Gap Repetition Period (MGRP) ) , where K is a new factor >1.
[0072] When the SSB periodicity = 640ms, the detection / measure / SSB-index-reading period may be any of (1) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *DRX cycle, (2) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *SSB periodicity, (3) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *MGRP, (4) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *K*DRX cycle, where K is a new factor >1, (5) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *K*SSB periodicity, where K is a new factor >1, (6) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *K*MGRP, where K is a new factor >1, or (7) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *max {DRX cycle, SSB periodicity, MGRP} .
[0073] In a second case of the first option, the length of the DRX cycle may be > 320ms. In this second case of the first option, when the SSB periodicity = 640ms, the detection / measure / SSB-index-reading period may be any of (1) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *DRX cycle, (2) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *SSB periodicity, (3) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *MGRP, (4) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *K*DRX cycle, where K is a new factor >1, (5) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *K*SSB periodicity, where K is a new factor >1, (6) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *K*MGRP, where K is a new factor >1, (7) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *max {DRX cycle, SSB periodicity, MGRP} , or (8) legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *K*max {DRX cycle, SSB periodicity, MGRP} , where K is a new factor >1. In these examples, the value of K may be defined in standards, e.g., 3GPP standards, and may be an integer or non-integer value.
[0074] In a second option, the network may indicate a measurement cycle for the UE to follow for the MG based neighbor cell evaluation, e.g., following DRX cycle, SSB periodicity, MGRP, scaled DRX cycle, scaled SSB periodicity, or scaled MGRP where the scaled refers to a K factor being provided by the network or defined in standards.
[0075] As described above, while the example embodiments are described with reference to the SSB periodicity, the example embodiments may also use the SMTC periodicity, e.g., where the values of the SSB periodicity were evaluated in the above examples, the SMTC periodicity may be evaluated in the same manner.
[0076] Fig. 6 shows an example method 600 for a UE to determine measurement parameters for an NTN network according to various example embodiments. The method may be performed by the UE 110 operating in the arrangement 400 of Fig. 4 where the satellite 410 is transmitting SSB / PBCH.
[0077] In 610, the UE 110 determines whether the UE 110 is currently in RRC Idle mode, RRC Inactive mode or RRC Connected mode. As described above, when the UE may perform different operations in Idle / Inactive mode than when in Connected mode.
[0078] When the UE 110 has determined that the UE 110 is in Idle / Inactive mode, in 620, the UE 110 determines the sample period for the serving cell measurements. As described above, there are several options for determining the sample period based on the SSB / PBCH / SMTC periodicity. The UE 110 may use any of the described examples.
[0079] In 630, the UE 110 determines the evaluation period for the serving cell measurements. As described above, there are several options for determining the evaluation period based on the SSB / PBCH / SMTC periodicity and the DRX cycle length. The UE 110 may use any of the described examples.
[0080] In 640, the UE 110 determines the detection / measure / evaluation period for the neighbor cell measurements. As described above, there are several options for determining the detection / measure / evaluation period based on the SSB / PBCH / SMTC periodicity and the DRX cycle length. The UE 110 may use any of the described examples.
[0081] In 610, when the UE 110 has determined that the UE 110 is in Connected mode, in 650, the UE 110 determines the detection / measure / SSB index reading period for the neighbor cell measurements. This detection / measure / SSB index reading period may apply to either gapless measurements or MG based measurements. As described above, there are several options for determining the detection / measure / SSB index reading period based on the SSB / PBCH / SMTC periodicity and the DRX cycle length. The UE 110 may use any of the described examples.
[0082] Examples
[0083] In a first example, a method, comprising generating, for transmission to a base station, a first user equipment (UE) capability comprising an indication of support of a downlink (DL) coverage enhancement for a non-terrestrial network (NTN) and generating, for transmission to a base station, a second UE capability comprising an indication of support of one or more periodicities of a Synchronization Signal Block (SSB) , Physical Broadcast Channel (PBCH) or SS / PBCH Block Measurement Timing Configuration (SMTC) .
[0084] In a second example, the method of the first example, wherein the indication of support of one or more periodicities of SSB, PBCH or SMTC comprises a value of the one or more periodicities that are supported, wherein candidate values for the value comprise 40ms, 80 ms, 160 ms, 320ms, or 640ms.
[0085] In a third example, the method of the second example, wherein the second UE capability is reported as one of a per-band indication, a per-UE indication, or a per-Frequency Range (FR) indication.
[0086] In a fourth example, the method of the first example, wherein the indication of support of one or more periodicities of SSB, PBCH or SMTC comprises a value when the one or more periodicities is greater than 160ms, wherein candidate values for the value comprise 320ms or 640ms.
[0087] In a fifth example, the method of the fourth example, wherein the second UE capability is reported as one of a per-band indication, a per-UE indication, or a per-Frequency Range (FR) indication.
[0088] In a sixth example, the method of the first example, wherein the indication of support of one or more periodicities of SSB, PBCH or SMTC comprises an indication that the one or more periodicities are greater than 160ms.
[0089] In a seventh example, the method of the sixth example, wherein the second UE capability is reported as one of a per-band indication, a per-UE indication, or a per-Frequency Range (FR) indication.
[0090] In an eighth example, a processor configured to perform any of the methods of the first through seventh examples.
[0091] In a ninth example, a user equipment (UE) configured to perform any of the methods of the first through seventh examples.
[0092] In a tenth example, a method, comprising processing, based on signaling from a base station, a periodicity of a Synchronization Signal Block (SSB) , Physical Broadcast Channel (PBCH) or SS / PBCH Block Measurement Timing Configuration (SMTC) for a non-terrestrial network (NTN) , determining an operating mode is one of a Radio Resource Control (RRC) Idle mode, an RRC Inactive mode or an RRC Connected mode and determining, based on at least the operating mode, measurement parameters for measurements to be performed on one or more cells of the NTN.
[0093] In an eleventh example, the method of the tenth example, wherein the operating mode is one of the RRC Idle mode or RRC Inactive mode and the parameter comprises a sample period for Synchronization Signal-Reference Signal Received Power (SS-RSRP) or SS-Reference Signal Received Quality (SS-RSRQ) serving cell measurements, wherein at least one SS-RSRP or SS-RSRQ serving cell measurements is to be performed in the sample period.
[0094] In a twelfth example, the method of the eleventh example, wherein, when the SSB, PBCH or SMTC periodicity is less than or equal to 160 ms, the sample period is determined based on M1*N1 Discontinuous Reception (DRX) cycle length, wherein M1 and N1 are values defined by standard and the DRX cycle length is defined by the NTN and when the SSB, PBCH or SMTC periodicity is greater than or equal to 320 ms, the sample period is determined based on max {M1*N1 DRX cycle length, SSB PBCH or SMTC periodicity} .
[0095] In a thirteenth example, the method of the eleventh example, wherein, when the SSB, PBCH or SMTC periodicity is less than or equal to 160 ms, the sample period is determined based on M1*N1 Discontinuous Reception (DRX) cycle length, wherein M1 and N1 are values defined by standard and the DRX cycle length is defined by the NTN and when the SSB, PBCH or SMTC periodicity is greater than or equal to 320 ms, the sample period is determined based on M1*N1*Max {DRX cycle length, SSB periodicity} .
[0096] In a fourteenth example, the method of the eleventh example, wherein, when the SSB, PBCH or SMTC periodicity is less than or equal to 160 ms, the sample period is determined based on M1*N1 Discontinuous Reception (DRX) cycle length, wherein M1 and N1 are values defined by standard and the DRX cycle length is defined by the NTN and when the SSB, PBCH or SMTC periodicity is greater than or equal to 320 ms, the sample period is determined based on signaling from the network that indicates one of the DRX cycle length, the SSB, PBCH or SMTC periodicity, a scaled DRX cycle length or a scaled SSB, PBCH or SMTC periodicity.
[0097] In a fifteenth example, the method of the tenth example, wherein the operating mode is one of the RRC Idle mode or RRC Inactive mode and the parameter comprises an evaluation period for Synchronization Signal-Reference Signal Received Power (SS-RSRP) or SS-Reference Signal Received Quality (SS-RSRQ) serving cell measurements, wherein two or more SS-RSRP or SS-RSRQ serving cell measurements are to be performed in the evaluation period, the method further comprising processing, based on signaling from the base station, an indication of a Discontinuous Reception (DRX) cycle length.
[0098] In a sixteenth example, the method of the fifteenth example, wherein, when the DRX cycle length is 320 ms, and when the SSB, PBCH or SMTC periodicity is less than or equal to 160 ms, the evaluation period is determined based on M1*N1*4*DRX cycle length, wherein M1 and N1 are values defined by standard, or when the SSB, PBCH or SMTC periodicity is equal to 320 ms, the evaluation period is determined based on one of (1) M1*N1*4*DRX cycle length, (2) M1*N1*4* (SSB periodicity or SMTC periodicity) , (3) M1*N1*4*K*DRX cycle length, wherein K is a factor >1 defined by standard, or (4) M1*N1*4*K*SSB periodicity or SMTC periodicity) , wherein K is a factor >1 defined by standard, (5) M1*N1*4*max {DRX cycle length, (SSB periodicity or SMTC periodicity) } , (6) 4*max {M1*N1*DRX cycle length, (SSB periodicity or SMTC periodicity) } , or when the SSB, PBCH or SMTC periodicity is equal to 640 ms, the evaluation period is determined based on one of (1) M1*N1*4*K*DRX cycle length, wherein K is a factor >1 defined by standard, (2) M1*N1*4*max{DRX cycle length, SSB periodicity, SMTC periodicity} , or (3) 4*max {M1*N1*DRX cycle length, SSB periodicity, SMTC periodicity} .
[0099] In a seventeenth example, the method of the fifteenth example, wherein, when the DRX cycle length is 640 ms, and when the SSB, PBCH or SMTC periodicity is less than or equal to 320 ms, the evaluation period is determined based on one M1*N1*4* DRX cycle length, wherein M1 and N1 are values defined by standard or when the SSB, PBCH or SMTC periodicity is equal to 640 ms, the evaluation period is determined based on one of (1) M1*N1*4*DRX cycle length, (2) M1*N1*4* (SSB periodicity or SMTC periodicity) , (3) M1*N1*4*K*DRX cycle length, wherein K is a factor >1 defined by standard, (4) M1*N1*4*K* (SSB periodicity or SMTC periodicity) , wherein K is a factor >1 defined by standard, or (5) 4*max {M1*N1*DRX cycle length, SSB periodicity, SMTC periodicity} .
[0100] In an eighteenth example, the method of the fifteenth example, wherein the evaluation period is determined based on signaling from the network that indicates one of the DRX cycle length, the SSB, PBCH or SMTC periodicity, a scaled DRX cycle length or a scaled SSB, PBCH or SMTC periodicity is to be used as the evaluation period, wherein the scaled DRX cycle length or a scaled SSB, PBCH or SMTC periodicity is based on a factor K >1 that is defined by standard.
[0101] In a nineteenth example, the method of the tenth example, wherein the operating mode is one of the RRC Idle mode or RRC Inactive mode and the parameter comprises a detection / measure / evaluation period for neighbor cell measurements, the method further comprising processing, based on signaling from the base station, an indication of a Discontinuous Reception (DRX) cycle length.
[0102] In a twentieth example, the method of the nineteenth example, wherein, when the DRX cycle length is 320 ms, and when the SSB, PBCH or SMTC periodicity is less than or equal to 160 ms, the detection / measure / evaluation period is determined based on a legacy detection / measure / evaluation period defined in 3GPP TS 38.133 section 4.2C. 2.3 or 4.2C. 2.4 (legacy detection / measure / evaluation sample number) , or when the SSB, PBCH or SMTC periodicity is equal to 320 ms, the detection / measure / evaluation period is determined based on one of (1) the legacy detection / measure / evaluation sample number*a legacy scaling factor *the DRX cycle length, wherein the legacy scaling factor is defined by standard, (2) the legacy detection / measure / evaluation sample number*the legacy scaling factor * (SSB periodicity or SMTC periodicity) , (3) the legacy detection / measure / evaluation sample number*the legacy scaling factor *K*DRX cycle length, wherein K is a factor >1 defined by standard, (4) the legacy detection / measure / evaluation sample number*the legacy scaling factor *K* (SSB periodicity or SMTC periodicity) , wherein K is a factor >1 defined by standard, or (5) the legacy detection / measure / evaluation sample number*the legacy scaling factor *max {DRX cycle length, SSB periodicity, SMTC periodicity} , or when the SSB, PBCH or SMTC periodicity is equal to 640ms, the detection / measure / evaluation period is determined based on one of (1) the legacy detection / measure / evaluation sample number*K*DRX cycle length, wherein K is a factor >1 defined by standard, (2) the legacy detection / measure / evaluation sample number*max {DRX cycle length, SSB periodicity, SMTC periodicity} , or (3) legacy detection / measure / evaluation sample number*the legacy scaling factor *max {DRX cycle length, SSB periodicity, SMTC periodicity} .
[0103] In a twenty first example, the method of the nineteenth example, wherein, when the DRX cycle length is 640 ms, and when the SSB, PBCH or SMTC periodicity is less than or equal to 320 ms, the detection / measure / evaluation period is determined based on a legacy detection / measure / evaluation period defined in 3GPP TS 38.133 section 4.2C. 2.3 or 4.2C. 2.4 (legacy detection / measure / evaluation sample number) , or when the SSB, PBCH or SMTC periodicity is equal to 640 ms, the detection / measure / evaluation period is determined based on one of (1) the legacy detection / measure / evaluation sample number*a legacy scaling factor *DRX cycle length, wherein the legacy scaling factor is defined by standard, (2) the legacy detection / measure / evaluation sample number*the legacy scaling factor * (SSB periodicity or SMTC periodicity) , (3) the legacy detection / measure / evaluation sample number*the legacy scaling factor *K*DRX cycle length, wherein K is a factor >1 defined by standard, (4) the legacy detection / measure / evaluation sample number*the legacy scaling factor *K* (SSB periodicity or SMTC periodicity) , wherein K is a factor >1 defined by standard, or (5) the legacy detection / measure / evaluation sample number*the legacy scaling factor *max {DRX cycle length, SSB periodicity, SMTC periodicity} .
[0104] In a twenty second example, the method of the nineteenth example, wherein the detection / measure / evaluation period is determined based on signaling from the network that indicates one of the DRX cycle length, the SSB, PBCH or SMTC periodicity, a scaled DRX cycle length or a scaled SSB, PBCH or SMTC periodicity is to be used as the detection / measure / evaluation period, wherein the scaled DRX cycle length or a scaled SSB, PBCH or SMTC periodicity is based on a factor K >1 that is defined by standard.
[0105] In a twenty third example, the method of the tenth example, wherein the operating mode is the RRC Connected mode and the parameter comprises a detection / measure / SSB-index-reading period for gapless neighbor cell measurements, the method further comprising processing, based on signaling from the base station, an indication of a Discontinuous Reception (DRX) cycle length.
[0106] In a twenty fourth example, the method of the twenty third example, wherein, when the DRX cycle length is less than or equal to 320 ms, and when the SSB, PBCH or SMTC periodicity is less than or equal to 320 ms, the detection / measure / SSB-index-reading period is determined based on one of (1) a legacy detection / measure / SSB-index-reading period defined in 3GPP TS38.133 section 9.2C and 9.3C (legacy detection / measure / SSB-index-reading period sample number) or (2) the legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *K*max (SSB periodicity, SMTC periodicity, DRX cycle length) , wherein the legacy scaling factor is defined by standard and K is a factor >1 defined by standard, or when the SSB, PBCH or SMTC periodicity is less than or equal to 640 ms, the detection / measure / SSB-index-reading period is determined based on one of (1) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *DRX cycle length, (2) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor * (SSB periodicity or SMTC periodicity) , (3) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K*DRX cycle length, wherein K is a factor >1 defined by standard, (4) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K* (SSB periodicity or SMTC periodicity) , wherein K is a factor >1 defined by standard, or (5) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *max {DRX cycle length, SSB periodicity, SMTC periodicity} .
[0107] In a twenty fifth example, the method of the twenty third example, wherein, when the DRX cycle length is greater than 320 ms, and when the SSB, PBCH or SMTC periodicity is less than or equal to 640 ms, the detection / measure / SSB-index-reading period is determined based on one of (1) a legacy detection / measure / SSB-index-reading period defined in 3GPP TS38.133 section 9.2C and 9.3C (legacy detection / measure / SSB-index-reading period sample number) *a legacy scaling factor *DRX cycle length, wherein the legacy scaling factor is defined by standard, (2) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor * (SSB periodicity or SMTC periodicity) , (3) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K*DRX cycle, wherein K is a factor >1 defined by standard, (4) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K* (SSB periodicity or SMTC periodicity) , wherein K is a factor >1 defined by standard, (5) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *max {DRX cycle length, SSB periodicity. SMTC periodicity} , or (6) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K*max {DRX cycle length, SSB periodicity, SMTC periodicity} , wherein K is a factor >1 defined by standard.
[0108] In a twenty sixth example, the method of the twenty third example, wherein the detection / measure / SSB-index-reading period is determined based on signaling from the network that indicates one of the DRX cycle length, the SSB, PBCH or SMTC periodicity, a scaled DRX cycle length or a scaled SSB, PBCH or SMTC periodicity is to be used as the detection / measure / evaluation period, wherein the scaled DRX cycle length or a scaled SSB, PBCH or SMTC periodicity is based on a factor K >1 that is defined by standard.
[0109] In a twenty seventh example, the method of the tenth example, wherein the operating mode is the RRC Connected mode and the parameter comprises a detection / measure / SSB-index-reading period for measurement gap (MG) based neighbor cell measurements, the method further comprising processing, based on signaling from the base station, an indication of a Discontinuous Reception (DRX) cycle length.
[0110] In a twenty eighth example, the method of the twenty seventh example, wherein, when the DRX cycle length is less than or equal to 320 ms, and when the SSB, PBCH or SMTC periodicity is less than or equal to 320 ms, the detection / measure / SSB-index-reading period is determined based on one of (1) a legacy detection / measure / SSB-index-reading period defined in 3GPP TS38.133 section 9.2C and 9.3C (legacy detection / measure / SSB-index-reading period sample number) *a legacy scaling factor *DRX cycle length, wherein the legacy scaling factor is defined by standard, or (2) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K*max (SSB periodicity, SMTC periodicity, DRX cycle length, measurement gap repetition period (MGRP) ) , wherein K is a factor >1 defined by standard, or when the SSB, PBCH or SMTC periodicity is equal to 640 ms, the detection / measure / SSB-index-reading period is determined based on one of (1) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *DRX cycle length, (2) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor * (SSB periodicity or SMTC periodicity) , (3) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *MGRP, (4) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K*DRX cycle length, wherein K is a factor >1 defined by standard, (5) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K* (SSB periodicity or SMTC periodicity) , wherein K is a factor >1 defined by standard, (6) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K*MGRP, wherein K is a factor >1 defined by standard, or (7) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *max {DRX cycle length, SSB periodicity, SMTC periodicity, MGRP} .
[0111] In a twenty ninth example, the method of the twenty seventh example, wherein, when the DRX cycle length is greater than 320 ms, and, when the SSB, PBCH or SMTC periodicity is equal to 640 ms, the detection / measure / SSB-index-reading period is determined based on one of (1) a legacy detection / measure / SSB-index-reading period defined in 3GPP TS38.133 section 9.2C and 9.3C (legacy detection / measure / SSB-index-reading period sample number) *a legacy scaling factor *DRX cycle length, wherein the legacy scaling factor is defined by standard, (2) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor * (SSB periodicity or SMTC periodicity) , (3) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *a measurement gap repetition period (MGRP) , (4) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K*DRX cycle length, wherein K is a factor >1 defined by standard, (5) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K* (SSB periodicity or SMTC periodicity) , wherein K is a factor >1 defined by standard, (6) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K*MGRP, wherein K is a factor >1 defined by standard, (7) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *max {DRX cycle length, SSB periodicity, SMTC periodicity, MGRP} , or (8) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K*max{DRX cycle length, SSB periodicity, SMTC periodicity, MGRP} , wherein K is a factor >1 defined by standard.
[0112] In a thirtieth example, the method of the twenty seventh example, wherein the detection / measure / SSB-index-reading period is determined based on signaling from the network that indicates one of the DRX cycle length, the SSB, PBCH or SMTC periodicity, a measurement gap repetition period (MGRP) , a scaled DRX cycle length, a scaled SSB, PBCH or SMTC periodicity or a scaled MGRP is to be used as the detection / measure / evaluation period, wherein the scaled DRX cycle length, scaled SSB, PBCH or SMTC periodicity or scaled MGRP is based on a factor K >1 that is defined by standard.
[0113] In a thirty first example, a processor configured to perform any of the methods of the tenth through thirtieth examples.
[0114] In a thirty second example, a user equipment (UE) configured to perform any of the methods of the tenth through thirtieth examples.
[0115] Those skilled in the art will understand that the above-described example embodiments may be implemented in any suitable software or hardware configuration or combination thereof. An example hardware platform for implementing the example embodiments may include, for example, an Intel x86 based platform with compatible operating system, a Windows OS, a Mac platform and MAC OS, a mobile device having an operating system such as iOS, Android, etc. The example embodiments described above may be embodied as a program containing lines of code stored on a non-transitory computer readable storage medium that, when compiled, may be executed on a processor or microprocessor.
[0116] Although this application described various embodiments each having different features in various combinations, those skilled in the art will understand that any of the features of one embodiment may be combined with the features of the other embodiments in any manner not specifically disclaimed or which is not functionally or logically inconsistent with the operation of the device or the stated functions of the disclosed embodiments.
[0117] It is well understood that the use of personally identifiable information should follow privacy policies and practices that are generally recognized as meeting or exceeding industry or governmental requirements for maintaining the privacy of users. In particular, personally identifiable information data should be managed and handled so as to minimize risks of unintentional or unauthorized access or use, and the nature of authorized use should be clearly indicated to users.
[0118] It will be apparent to those skilled in the art that various modifications may be made in the present disclosure, without departing from the spirit or the scope of the disclosure. Thus, it is intended that the present disclosure cover modifications and variations of this disclosure provided they come within the scope of the appended claims and their equivalent.
Claims
1.An apparatus comprising processing circuitry configured to:generate, for transmission to a base station, a first user equipment (UE) capability comprising an indication of support of a downlink (DL) coverage enhancement for a non-terrestrial network (NTN) ; andgenerate, for transmission to a base station, a second UE capability comprising an indication of support of one or more periodicities of a Synchronization Signal Block (SSB) , Physical Broadcast Channel (PBCH) or SS / PBCH Block Measurement Timing Configuration (SMTC) .2.The apparatus of claim 1, wherein the indication of support of one or more periodicities of SSB, PBCH or SMTC comprises a value of the one or more periodicities that are supported, wherein candidate values for the value comprise 40ms, 80 ms, 160 ms, 320ms, or 640ms.3.The apparatus of claim 1, wherein the indication of support of one or more periodicities of SSB, PBCH or SMTC comprises a value when the one or more periodicities is greater than 160ms, wherein candidate values for the value comprise 320ms or 640ms.4.The apparatus of claim 1, wherein the indication of support of one or more periodicities of SSB, PBCH or SMTC comprises an indication that the one or more periodicities are greater than 160ms.5.An apparatus comprising processing circuitry configured to:process, based on signaling from a base station, a periodicity of a Synchronization Signal Block (SSB) , Physical Broadcast Channel (PBCH) or SS / PBCH Block Measurement Timing Configuration (SMTC) for a non-terrestrial network (NTN) ;determine an operating mode is one of a Radio Resource Control (RRC) Idle mode, an RRC Inactive mode or an RRC Connected mode; anddetermine, based on at least the operating mode, measurement parameters for measurements to be performed on one or more cells of the NTN.6.The apparatus of claim 5, wherein the operating mode is one of the RRC Idle mode or RRC Inactive mode and the parameter comprises a sample period for Synchronization Signal-Reference Signal Received Power (SS-RSRP) or SS-Reference Signal Received Quality (SS-RSRQ) serving cell measurements, wherein at least one SS-RSRP or SS-RSRQ serving cell measurements is to be performed in the sample period.7.The apparatus of claim 6, wherein,when the SSB, PBCH or SMTC periodicity is less than or equal to 160 ms, the sample period is determined based on M1*N1 Discontinuous Reception (DRX) cycle length, wherein M1 and N1 are values defined by standard and the DRX cycle length is defined by the NTN; andwhen the SSB, PBCH or SMTC periodicity is greater than or equal to 320 ms, the sample period is determined based on max {M1*N1 DRX cycle length, SSB PBCH or SMTC periodicity} .8.The apparatus of claim 6, wherein,when the SSB, PBCH or SMTC periodicity is less than or equal to 160 ms, the sample period is determined based on M1*N1 Discontinuous Reception (DRX) cycle length, wherein M1 and N1 are values defined by standard and the DRX cycle length is defined by the NTN; andwhen the SSB, PBCH or SMTC periodicity is greater than or equal to 320 ms, the sample period is determined based on M1*N1*Max{DRX cycle length, SSB periodicity} .9.The apparatus of claim 6, wherein,when the SSB, PBCH or SMTC periodicity is less than or equal to 160 ms, the sample period is determined based on M1*N1 Discontinuous Reception (DRX) cycle length, wherein M1 and N1 are values defined by standard and the DRX cycle length is defined by the NTN; andwhen the SSB, PBCH or SMTC periodicity is greater than or equal to 320 ms, the sample period is determined based on signaling from the network that indicates one of the DRX cycle length, the SSB, PBCH or SMTC periodicity, a scaled DRX cycle length or a scaled SSB, PBCH or SMTC periodicity.10.The apparatus of claim 5, wherein the operating mode is one of the RRC Idle mode or RRC Inactive mode and the parameter comprises an evaluation period for Synchronization Signal-Reference Signal Received Power (SS-RSRP) or SS-Reference Signal Received Quality (SS-RSRQ) serving cell measurements, wherein two or more SS-RSRP or SS-RSRQ serving cell measurements are to be performed in the evaluation period, the processing circuitry further configured to:process, based on signaling from the base station, an indication of a Discontinuous Reception (DRX) cycle length.11.The apparatus of claim 10, wherein, when the DRX cycle length is 320 ms, andwhen the SSB, PBCH or SMTC periodicity is less than or equal to 160 ms, the evaluation period is determined based on M1*N1*4*DRX cycle length, wherein M1 and N1 are values defined by standard; orwhen the SSB, PBCH or SMTC periodicity is equal to 320 ms, the evaluation period is determined based on one of (1) M1*N1*4*DRX cycle length, (2) M1*N1*4* (SSB periodicity or SMTC periodicity) , (3) M1*N1*4*K*DRX cycle length, wherein K is a factor >1 defined by standard, or (4) M1*N1*4*K*SSB periodicity or SMTC periodicity) , wherein K is a factor >1 defined by standard, (5) M1*N1*4*max {DRX cycle length, (SSB periodicity or SMTC periodicity) } , (6) 4*max {M1*N1*DRX cycle length, (SSB periodicity or SMTC periodicity) } ; orwhen the SSB, PBCH or SMTC periodicity is equal to 640 ms, the evaluation period is determined based on one of (1) M1*N1*4*K*DRX cycle length, wherein K is a factor >1 defined by standard, (2) M1*N1*4*max {DRX cycle length, SSB periodicity, SMTC periodicity} , or (3) 4*max {M1*N1*DRX cycle length, SSB periodicity, SMTC periodicity} .12.The apparatus of claim 10, wherein, when the DRX cycle length is 640 ms, andwhen the SSB, PBCH or SMTC periodicity is less than or equal to 320 ms, the evaluation period is determined based on one M1*N1*4*DRX cycle length, wherein M1 and N1 are values defined by standard; orwhen the SSB, PBCH or SMTC periodicity is equal to 640 ms, the evaluation period is determined based on one of (1) M1*N1*4*DRX cycle length, (2) M1*N1*4* (SSB periodicity or SMTC periodicity) , (3) M1*N1*4*K*DRX cycle length, wherein K is a factor >1 defined by standard, (4) M1*N1*4*K* (SSB periodicity or SMTC periodicity) , wherein K is a factor >1 defined by standard, or (5) 4*max {M1*N1*DRX cycle length, SSB periodicity, SMTC periodicity} .13.The apparatus of claim 5, wherein the operating mode is one of the RRC Idle mode or RRC Inactive mode and the parameter comprises a detection / measure / evaluation period for neighbor cell measurements, the processing circuitry further configured to:process, based on signaling from the base station, an indication of a Discontinuous Reception (DRX) cycle length.14.The apparatus of claim 13, wherein, when the DRX cycle length is 320 ms, andwhen the SSB, PBCH or SMTC periodicity is less than or equal to 160 ms, the detection / measure / evaluation period is determined based on a legacy detection / measure / evaluation period defined in 3GPP TS 38.133 section 4.2C. 2.3 or 4.2C. 2.4 (legacy detection / measure / evaluation sample number) ; orwhen the SSB, PBCH or SMTC periodicity is equal to 320 ms, the detection / measure / evaluation period is determined based on one of (1) the legacy detection / measure / evaluation sample number*a legacy scaling factor *the DRX cycle length, wherein the legacy scaling factor is defined by standard, (2) the legacy detection / measure / evaluation sample number*the legacy scaling factor * (SSB periodicity or SMTC periodicity) , (3) the legacy detection / measure / evaluation sample number*the legacy scaling factor *K*DRX cycle length, wherein K is a factor >1 defined by standard, (4) the legacy detection / measure / evaluation sample number*the legacy scaling factor *K* (SSB periodicity or SMTC periodicity) , wherein K is a factor >1 defined by standard, or (5) the legacy detection / measure / evaluation sample number*the legacy scaling factor *max {DRX cycle length, SSB periodicity, SMTC periodicity} ; orwhen the SSB, PBCH or SMTC periodicity is equal to 640ms, the detection / measure / evaluation period is determined based on one of (1) the legacy detection / measure / evaluation sample number*K*DRX cycle length, wherein K is a factor >1 defined by standard, (2) the legacy detection / measure / evaluation sample number*max {DRX cycle length, SSB periodicity, SMTC periodicity} , or (3) legacy detection / measure / evaluation sample number*the legacy scaling factor *max {DRX cycle length, SSB periodicity, SMTC periodicity} .15.The apparatus of claim 13, wherein, when the DRX cycle length is 640 ms, andwhen the SSB, PBCH or SMTC periodicity is less than or equal to 320 ms, the detection / measure / evaluation period is determined based on a legacy detection / measure / evaluation period defined in 3GPP TS 38.133 section 4.2C. 2.3 or 4.2C. 2.4 (legacy detection / measure / evaluation sample number) ; orwhen the SSB, PBCH or SMTC periodicity is equal to 640 ms, the detection / measure / evaluation period is determined based on one of (1) the legacy detection / measure / evaluation sample number*a legacy scaling factor *DRX cycle length, wherein the legacy scaling factor is defined by standard, (2) the legacy detection / measure / evaluation sample number*the legacy scaling factor * (SSB periodicity or SMTC periodicity) , (3) the legacy detection / measure / evaluation sample number*the legacy scaling factor *K*DRX cycle length, wherein K is a factor >1 defined by standard, (4) the legacy detection / measure / evaluation sample number*the legacy scaling factor *K* (SSB periodicity or SMTC periodicity) , wherein K is a factor >1 defined by standard, or (5) the legacy detection / measure / evaluation sample number*the legacy scaling factor *max {DRX cycle length, SSB periodicity, SMTC periodicity} .16.The apparatus of claim 5, wherein the operating mode is the RRC Connected mode and the parameter comprises a detection / measure / SSB-index-reading period for gapless neighbor cell measurements, the processing circuitry further configured to:process, based on signaling from the base station, an indication of a Discontinuous Reception (DRX) cycle length.17.The apparatus of claim 16, wherein, when the DRX cycle length is less than or equal to 320 ms, andwhen the SSB, PBCH or SMTC periodicity is less than or equal to 320 ms, the detection / measure / SSB-index-reading period is determined based on one of (1) a legacy detection / measure / SSB-index-reading period defined in 3GPP TS38.133 section 9.2C and 9.3C (legacy detection / measure / SSB-index-reading period sample number) or (2) the legacy detection / measure / SSB-index-reading sample number*legacy scaling factor *K*max (SSB periodicity, SMTC periodicity, DRX cycle length) , wherein the legacy scaling factor is defined by standard and K is a factor >1 defined by standard; orwhen the SSB, PBCH or SMTC periodicity is less than or equal to 640 ms, the detection / measure / SSB-index-reading period is determined based on one of (1) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *DRX cycle length, (2) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor * (SSB periodicity or SMTC periodicity) , (3) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K*DRX cycle length, wherein K is a factor >1 defined by standard, (4) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K* (SSB periodicity or SMTC periodicity) , wherein K is a factor >1 defined by standard, or (5) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *max {DRX cycle length, SSB periodicity, SMTC periodicity} .18.The apparatus of claim 16, wherein, when the DRX cycle length is greater than 320 ms, andwhen the SSB, PBCH or SMTC periodicity is less than or equal to 640 ms, the detection / measure / SSB-index-reading period is determined based on one of (1) a legacy detection / measure / SSB-index-reading period defined in 3GPP TS38.133 section 9.2C and 9.3C (legacy detection / measure / SSB-index-reading period sample number) *a legacy scaling factor *DRX cycle length, wherein the legacy scaling factor is defined by standard, (2) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor * (SSB periodicity or SMTC periodicity) , (3) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K*DRX cycle, wherein K is a factor >1 defined by standard, (4) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K* (SSB periodicity or SMTC periodicity) , wherein K is a factor >1 defined by standard, (5) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *max {DRX cycle length, SSB periodicity. SMTC periodicity} , or (6) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K*max {DRX cycle length, SSB periodicity, SMTC periodicity} , wherein K is a factor >1 defined by standard.19.The apparatus of claim 5, wherein the operating mode is the RRC Connected mode and the parameter comprises a detection / measure / SSB-index-reading period for measurement gap (MG) based neighbor cell measurements, the processing circuitry further configured to:process, based on signaling from the base station, an indication of a Discontinuous Reception (DRX) cycle length.20.The apparatus of claim 19, wherein, when the DRX cycle length is less than or equal to 320 ms, andwhen the SSB, PBCH or SMTC periodicity is less than or equal to 320 ms, the detection / measure / SSB-index-reading period is determined based on one of (1) a legacy detection / measure / SSB-index-reading period defined in 3GPP TS38.133 section 9.2C and 9.3C (legacy detection / measure / SSB-index-reading period sample number) *a legacy scaling factor *DRX cycle length, wherein the legacy scaling factor is defined by standard, or (2) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K*max (SSB periodicity, SMTC periodicity, DRX cycle length, measurement gap repetition period (MGRP) ) , wherein K is a factor >1 defined by standard; orwhen the SSB, PBCH or SMTC periodicity is equal to 640 ms, the detection / measure / SSB-index-reading period is determined based on one of (1) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *DRX cycle length, (2) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor * (SSB periodicity or SMTC periodicity) , (3) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *MGRP, (4) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K*DRX cycle length, wherein K is a factor >1 defined by standard, (5) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K* (SSB periodicity or SMTC periodicity) , wherein K is a factor >1 defined by standard, (6) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *K*MGRP, wherein K is a factor >1 defined by standard, or (7) the legacy detection / measure / SSB-index-reading sample number*the legacy scaling factor *max {DRX cycle length, SSB periodicity, SMTC periodicity, MGRP}.
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