Radio resource management measurement resource allocation for low band carrier aggregation scenarios
Patent Information
- Application Number
- PCT/CN2025/085348
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-10-01
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Figure CN2025085348_01102026_PF_FP_ABST
Abstract
Description
RADIO RESOURCE MANAGEMENT MEASUREMENT RESOURCE ALLOCATION FOR LOW BAND CARRIER AGGREGATION SCENARIOSTECHNICAL FIELD
[0001] This application relates generally to wireless communication systems, including systems implementing low band carrier aggregation.BACKGROUND
[0002] Wireless mobile communication technology uses various standards and protocols to transmit data between a base station and a wireless communication device. Wireless communication system standards and protocols can include, for example, 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) (e.g., 4G) , 3GPP New Radio (NR) (e.g., 5G) , and Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard for Wireless Local Area Networks (WLAN) (commonly known to industry groups as ) .
[0003] As contemplated by the 3GPP, different wireless communication systems's tandards and protocols can use various radio access networks (RANs) for communicating between a base station of the RAN (which may also sometimes be referred to generally as a RAN node, a network node, or simply a node) and a wireless communication device known as a user equipment (UE) . 3GPP RANs can include, for example, Global System for Mobile communications (GSM) , Enhanced Data Rates for GSM Evolution (EDGE) RAN (GERAN) , Universal Terrestrial Radio Access Network (UTRAN) , Evolved Universal Terrestrial Radio Access Network (E-UTRAN) , and / or Next-Generation Radio Access Network (NG-RAN) .
[0004] Each RAN may use one or more radio access technologies (RATs) to perform communication between the base station and the UE. For example, the GERAN implements GSM and / or EDGE RAT, the UTRAN implements Universal Mobile Telecommunication System (UMTS) RAT or other 3GPP RAT, the E-UTRAN implements LTE RAT (sometimes simply referred to as LTE) , and NG-RAN implements NR RAT (sometimes referred to herein as 5G RAT, 5G NR RAT, or simply NR) . In certain deployments, the E-UTRAN may also implement NR RAT. In certain deployments, NG-RAN may also implement LTE RAT.
[0005] A base station used by a RAN may correspond to that RAN. One example of an E-UTRAN base station is an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (also commonly denoted as evolved Node B, enhanced Node B, eNodeB, or eNB) . One example of an NG-RAN base station is a next generation Node B (also sometimes referred to as a g Node B or gNB) .
[0006] A RAN provides its communication services with external entities through its connection to a core network (CN) . For example, E-UTRAN may utilize an Evolved Packet Core (EPC) while NG-RAN may utilize a 5G Core Network (5GC) .
[0007] Frequency bands for 5G NR may be separated into two or more different frequency ranges. For example, Frequency Range 1 (FR1) may include frequency bands operating in sub-6 gigahertz (GHz) frequencies, some of which are bands that may be used by previous standards, and may potentially be extended to cover new spectrum offerings from 410 megahertz (MHz) to 7125 MHz. Frequencies below 1 GHz (e.g., 600 MHz to 1 GHz) may also be referred to as "low band. " Lower frequencies can cover greater distances (e.g., to support coverage over wide areas and in rural or remote locations) , but often do not provide the speed or capacity of higher frequencies. Frequency Range 2 (FR2) may include frequency bands from 24.25 GHz to 52.6 GHz. Note that in some systems, FR2 may also include frequency bands from 52.6 GHz to 71 GHz (or beyond) . Bands in the millimeter wave (mmWave) range of FR2 may have smaller coverage but potentially higher available bandwidth than bands in FR1. Skilled persons will recognize these frequency ranges, which are provided by way of example, may change from time to time or from region to region.BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0008] To easily identify the discussion of any particular element or act, the most significant digit or digits in a reference number refer to the figure number in which that element is first introduced.
[0009] FIG. 1 illustrates an example of low band carrier aggregation via switching, which may be configured according to certain embodiments herein.
[0010] FIG. 2 illustrates an example of SMTC and MG configurations, which may be used according to certain embodiments herein, for low band CA via switching according to a switching pattern.
[0011] FIG. 3 illustrates SMTC and MG configurations, which may be used according to certain embodiments herein, for low band CA via switching with limited SDL SCC measurement opportunities.
[0012] FIG. 4A and FIG. 4B illustrate prioritizing SDL SCC and dropping MG, according to certain embodiments.
[0013] FIG. 5 illustrates measurement resource coordination between MG-based measurements and SDL SCC measurements inside the duration of the switching pattern to the SDL SCC, according to certain embodiments herein.
[0014] FIG. 6 illustrates fully overlapped effective PCC SMTC occasions on PCC and fully non-overlapped effective SDL SCC SMTC occasions on SDL SCC, according to certain embodiments herein.
[0015] FIG. 7 is a flowchart illustrating a method for a UE to perform RRM measurement resource allocation for low band CA via switching, according to embodiments herein.
[0016] FIG. 8 is a flowchart illustrating a method for a base station to configure RRM measurement resource allocation, according to embodiments herein.
[0017] FIG. 9 illustrates an example architecture of a wireless communication system, according to embodiments disclosed herein.
[0018] FIG. 10 illustrates a system for performing signaling between a wireless device and a network device, according to embodiments disclosed herein.DETAILED DESCRIPTION
[0019] Various embodiments are described with regard to a 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.
[0020] Certain wireless communication systems, physical layer procedures and parameters may be used to enable low band (LB) carrier aggregation (CA) via switching. For example, UE parameters may include a switching gap (if needed) and corresponding physical layer parameters / procedures to allow switching when there is transmission (Tx) / reception (Rx) on a frequency division duplexing (FDD) carrier and no Rx on a second SDL carrier (e.g., case 1) and when there is Rx on a supplementary downlink (SDL) carrier and no Tx / Rx on the first FDD carrier (e.g., case 2) .
[0021] A semi-static switching pattern may be based on a radio resource control (RRC) configuration, which may be associated with a switching delay and a time mask for carrier switching. Further, radio resource management (RRM) parameters may be specified and corresponding UE capabilities may be defined for various deployment constraints. The deployment constraints may include, for example, the carrier frequency for all cases is less than one GHz, co-located and synchronized network deployment for both carriers, when both carriers are in a single timing advance group (TAG) , and / or when there is a subcarrier spacing (SCS) of 15 kilohertz (kHz) on both carriers.
[0022] A UE that supports inter-carrier scheduling may monitor FDD DL physical downlink control channel (PDCCH) downlink control information (DCI) , which has both FDD and SDL scheduling. For example, FIG. 1 illustrates an example of low band carrier aggregation via switching, which may be configured according to certain embodiments herein. In the illustrated example, a UE 102 includes a transceiver 104 configured to switch between an FDD duplexer 106 and an SDL receiver 108. At a first time instance corresponding to transmission time interval (TTI) N1, the transceiver 104 is switched to the FDD duplexer 106 to both transmit and receive on the FDD band through an antenna panel 114 (e.g., case 1: Tx / Rx on the FDD carrier and no Rx on the SDL carrier) . Then, at a second time instance corresponding to TTI N2, the transceiver 104 is switched to the SDL receiver 108 to receive on the SDL band through the antenna panel 114 (e.g., case 2: Rx on the SDL carrier and no Tx / Rx on the FDD carrier) . At a third time instance corresponding to TTI N3 (e.g., after an SDL scheduled interval is finished) , the transceiver 104 switches back to the FDD duplexer 106. The transceiver 104 does not simultaneously connect to both the FDD duplexer 106 and the SDL receiver 108.
[0023] By way of example, and not by limitation, FIG. 1 also shows low bands that may be used for low band CA such as a CA_n12A-n29A 110 bands and a CA_n5A-n29A 112 bands. The illustrated band notations are defined, for example, in 3GPP technical specification (TS) 38.101-1. The CA_n12A-n29A 110 bands includes an n12 uplink (UL) band, an n29 downlink (DL) band and an n12 DL band. The CA_n5A-n29A 112 bands includes an n29 DL band, an n5 UL band and an n5 DL band.
[0024] In various wireless communication systems, it may be beneficial to not change the definition of intra-frequency / inter-frequency measurement with / without gap measurement. However, it may be beneficial to study use cases for measurement gap (MG) applications.
[0025] Certain wireless communication systems do not have sufficient procedures defining when to prioritize an MG based measurement or a switching pattern based measurement. Additionally, it is not clear whether the carrier specific scaling factor (CSSF) for measurement resource allocation is to support MG configuration and switching pattern configuration for a primary component carrier (PCC) and for an SDL secondary component carrier (SCC) in LB CA scenarios. As a UE may not receive from both the PCC and SCC at the same time, efficient procedures for switching between the PCC and the SCC are needed.
[0026] CSSF inside MG may be defined, for example, 3GPP TS 38.133 section 9.1.5.2, which describes monitoring of multiple layers within gaps. For a UE supporting concurrent gaps, concurrent gaps with pre-MG, or concurrent gaps with network controlled small gap (NCSG) , and when concurrent gaps are configured the carrier-specific scaling factor CSSFwithin_gap, i for a measurement object i, is applied to various measurement types for the associated measurement gap, such as: synchronization signal block (SSB) -based intra-frequency measurement object with no measurement gap when all of the synchronization signal block measurement timing configuration (SMTC) occasions of this intra-frequency measurement object are overlapped with the associated measurement gap in concurrent gaps, or when part of the SMTC occasions of the intra-frequency measurement object are overlapped with the associated measurement gap and all the SMTC occasions of this intra-frequency measurement object are overlapped with the union of concurrent gaps. It may also be applied, for example, to SSB-based intra-frequency measurement objects with no measurement gap when part of the SMTC occasions of this intra-frequency measurement object are overlapped with the associated measurement gap and all the SMTC occasions of this intra-frequency measurement objects are overlapped with the union of concurrent gaps or with the union of concurrent gaps and multiple universal subscriber identity modules (MUSIM) gaps if MUSIM gaps are configured.
[0027] For example, the intra-frequency measurement occasion (MO) without MG may be counted in CSSF inside MG when the conditions of section 9.1.5.2 of 3GPP TS 38.133 are met. It should be understood that "counted in CSSF inside MG" means that the intra-frequency MO without MG share the measurement resource with the MOs with MG. In certain embodiments herein, either parts of the SMTCs or all of the SMTCs may be redefined when LB CA is used.
[0028] FIG. 2 illustrates an example of SMTC and MG configurations, which may be used according to certain embodiments herein, for low band CA via switching according to a switching pattern 202. The switching pattern 202 includes a first duration 204 when a UE is switched to stay on a PCC and a second duration 206 when the UE is switched to stay on an SDL SCC. Thus, the UE may measure PCC SSB 208a in PCC SMTC occasions 210 during the first durations 204 when the UE is switched to the PCC, but the UE cannot measure PCC SSB 208b in PCC SMTC occasions 210 during the second durations 206 when the UE is switched to the SDL SCC. Similarly, the UE may measure SDL SCC SSB 212a in SDL SCC SMTC occasions 218 during the second durations 206 when the UE is switched to the SDL SCC, but the UE cannot measure SDL SCC SSB 212b in SDL SCC SMTC occasions 218 during the first duration 204 when the UE is switched to the PCC.
[0029] In the example shown in FIG. 2, the PCC SMTC occasions 210 on the PCC are intra-frequency measurement occasions without MG, and the PCC SMTC occasions 210 on the PCC are not fully overlapped with MGs 214 for measurement of inter-frequency SSB 216 (i.e., it is a partially overlapped case when only considering the PCC SMTC configuration and the MG configuration) . However, effectively, the UE cannot perform measurement in the PCC SMTC occasions 210 of the PCC SSB 208b when they are colliding with the second durations 206 (in which the UE switched to stay on the SDL SCC cannot receive from the PCC) . Thus, in this example, the PCC SMTC occasions 210 and the MGs 214 are effectively fully overlapped, and SDL SCC SMTC occasions 218 and the MGs 214 are effectively fully non-overlapped. Therefore, it would be beneficial to determine how to count intra-frequency MOs in CSSF inside MG based on the intra-frequency MO SMTCs, MGs, and switching pattern for FDD and SDL.
[0030] Further, SDL SCC measurement opportunities may be very limited due to a switching pattern. For example, FIG. 3 illustrates SMTC and MG configurations, which may be used according to certain embodiments herein, for low band CA via switching with limited SDL SCC measurement opportunities. As with other examples discussed herein, a switching pattern 302 includes a first duration 304 when a UE is switched to stay on a PCC and a second duration 306 when the UE is switched to stay on an SDL SCC.
[0031] In the example shown in FIG. 3, the SDL SCC SMTC occasions 218 during each of the second durations 306 collide with MGs 310. The SDL SCC measurement opportunities are limited as compared to the total opportunities for SSB-based inter-frequency measurements during the MGs 310 in both the first durations 304 and the second durations 306. Thus, in certain embodiments disclosed herein, a UE prioritizes SDL SCC SSB measurements on the SDL SCC during the second durations 306 of the switching pattern 302 according to a prioritization configuration for the SDL SCC SMTC occasions 308 that collide with the MGs 310 for inter-frequency SSB measurements.
[0032] In addition, or in other embodiments, procedures are provided to enhance the CSSF for measurement resource allocation due to MG configuration and switching pattern configuration for a PCC SSB measurement and SDL SCC in LB CA scenarios.
[0033] In various embodiments, when the SDL SCC measurements are in the second duration of the switching pattern and colliding with the MG occasions, the UE prioritizes the SDL SCC measurement and drops the MG. For example, FIG. 4A and FIG. 4B illustrate prioritizing SDL SCC and dropping MG, according to certain embodiments. As with other examples discussed herein, a switching pattern 402 includes a first duration 404 when a UE is switched to stay on a PCC and a second duration 406 when the UE is switched to stay on an SDL SCC.
[0034] In the examples shown in FIG. 4A and FIG. 4B, SDL SCC SMTC occasions 408 during each of the second durations 406 collide with MGs 214. The UE may have other opportunities for inter-frequency SSB measurements in the MGs 410 during the first duration 404. However, as SDL SCC measurement is only feasible when the UE switches to the SDL SCC based on the switching pattern, dropping the SDL SCC measurements during the second duration 406 may negatively impact UE mobility performance. Thus, during the second durations 406, the UE may (e.g., based on a prioritization configuration) prioritize measurement of SDL SCC SSB 412 in SDL SCC SMTC occasions 408 over colliding MGs 410.
[0035] In the embodiment shown in FIG. 4A, during the second duration 406 of the switching pattern 402 when the UE stays on the SDL SCC, the UE measures each SDL SCC SSB 412 and drops each of the MGs 410. In one such embodiment, during the second duration 406, the UE prioritizes measurement of the SDL SCC SSB 412 and drops the MGs 410 only if there is a single SDL SCC SMTC occasion 408 in each second duration 406 of the switching pattern 402. In addition, or in other embodiments, during the second duration 406, the UE prioritizes measurement of the SDL SCC SSB 412 and drops the MGs 410 only if at least one MG-based measurement is available outside the overlapped MG occasions with SDL SCC measurement (e.g., during either the first duration 404 or the second duration 406 of the switching pattern 402) .
[0036] In the embodiment shown in FIG. 4B, prioritization (e.g., based on a prioritization configuration) includes allocating more measurement resources for SDL SCC measurements over the MG-based measurements. For example, for the overlapped occasions between MGs 410 and SDL SCC SMTC occasions 408 during the second duration 406 of the switching pattern 402, the UE may be configured to use X%of the overlapped occasions to measure SDL SCC SSB 412 and Y%of the SDL SCC SMTC occasions 408 for MG-based measurement occasions. To prioritize the SDL SCC measurements over the MG-based measurements, X>Y, where X+Y=100%. In the example shown in FIG. 4B, X = 66.66% (i.e., 2 / 3) and Y = 33.33% (i.e., 1 / 3) . Skilled persons will recognize from the disclosure herein that other percentages (or ratios) may also be used to allocate measurement resources between SDL SCC measurements and MG-based measurements.
[0037] In various embodiments, the measurement resource coordination between the MG based measurement and the SDL SCC measurement inside the duration of the switching pattern to the SDL SCC SSB may adhere to the CSSF principle. Thus, the measurement resource coordination depends on the overlapping status. If fully overlapped, the UE follows CSSF inside MG to allocate the measurement resource between MG based measurement and SDL SCC measurement inside the duration of the switching pattern to SDL SCC. If partially overlapped, the UE performs SDL SCC measurement outside the overlapped occasions with MG inside the duration of the switching pattern to SDL SCC. The overlapping case definition may be based on SMTC configurations, switching pattern, and MG configuration. Alternatively, the overlapping case definition may be based on effective SMTC configurations and the MG configuration. Effective SMTC is discussed hereinbelow.
[0038] FIG. 5 illustrates measurement resource coordination between MG-based measurements and SDL SCC measurements inside the duration of the switching pattern to the SDL SCC, according to certain embodiments. As with other examples discussed herein, a switching pattern 502 includes a first duration 504 when a UE is switched to stay on a PCC and a second duration 506 when the UE is switched to stay on an SDL SCC. In this example, however, during the second duration 506, a first SDL SCC SMTC occasion 510 is overlapped by an MG 512 and a second SDL SCC SMTC occasion 514 is outside the overlapped occasion (i.e., it is not overlapped by the MG 512 or another MG) . The UE is configured to, during the second duration 506 of the switching pattern 502, drop the first SDL SCC SMTC occasion 510 and perform an inter-frequency SSB measurement in the MG 512, and perform an SDL SCC measurement in the second SDL SCC SMTC occasion 514 outside the overlapped occasion.
[0039] In certain embodiments, the prioritization of the SDL SCC SSB measurement or inter-frequency SSB measurement with MG may be based on a network indication. In one such embodiment, the network may indicate to drop the inter-frequency SSB measurement with MG or the SDL SCC SSB measurement or the PCC SSB measurement on overlapped occasions. In addition, or in other embodiments, the network may indicate a resource allocation (e.g., a first percentage, a second percentage of allocated resources, and (in some cases) a third percentage of allocated resources) among inter-frequency SSB measurements with MG, SDL SCC SSB measurements, and PCC SSB measurements on overlapped occasions.
[0040] In certain embodiments, the layers or MOs counted in the CSSF inside MG are based on the effective SMTCs or CSI-RS resource of that layer or MO. In other words, in LB CA via switching (i.e., based on a switching pattern) , the SMTCs or CSI-RS resource of PCC outside the duration time of staying on SDL SCC based on the switching pattern are treated as effective SMTCs or CSI-RS resource of PCC, and the SMTCs or CSI-RS resource of SDL SCC inside the duration time of staying on SDL SCC based on the switching pattern are treated as effective SMTCs or CSI-RS resource of SCC. The overlapping status (i.e., partially overlapping or fully overlapping) may be decided based on the time location of effective SMTCs or CSI-RS resource and the MGs, or the time location of configured SMTCs or CSI-RS resource, MGs, and FDD-from / to-SDL switching patterns (including pattern periodicity and duration) .
[0041] For example, FIG. 6 illustrates fully overlapped effective PCC SMTC occasions on PCC and fully non-overlapped effective SDL SCC SMTC occasions on SDL SCC, according to certain embodiments. As with other examples discussed herein, a switching pattern 602 includes a first duration 604 when a UE is switched to stay on a PCC and a second duration 606 when the UE is switched to stay on an SDL SCC.
[0042] The PCC SMTC occasion 608 that are outside the second duration 606 of staying on the SDL SCC are treated as effective PCC SMTC occasions. The SDL SCC SMTC occasions 612 inside the second duration 606 of staying on the SDL SCC are treated as effective SDL SCC SMTC occasions. As shown in FIG. 6, the PCC SMTC occasions 608 outside the second duration 606 and the MGs 610 are effectively fully overlapped, and the SDL SCC SMTC occasions 612 inside the second duration 606 and the MGs 610 are effectively fully non-overlapped.
[0043] In various embodiments, 3GPP TS 38.133 section 9.1.5.2 may be enhanced to support effective layers (e.g., effective SMTCs and / or CSI-RS resources) in the CSSF principle inside MGs. For example, in certain embodiments, monitoring of multiple layers within gaps includes, for a UE supporting concurrent gaps or concurrent gaps with Pre-MG or concurrent gaps with NCSG, and when concurrent gaps are configured the carrier-specific scaling factor CSSFwithin_gap, i for a measurement object i derived in this chapter is applied to following measurement types for the associated measurement gap: SSB-based intra-frequency measurement object with no measurement gap, when: for PCC or SDL SCC of LB CA via switching, all of the effective SMTC occasions of this intra-frequency measurement object are overlapped with the associated measurement gap in concurrent GAPs; or for PCC or SDL SCC of LB CA via switching, part of the effective SMTC occasions of this intra-frequency measurement object are overlapped with the associated measurement gap and all the effective SMTC occasions of this intra-frequency measurement object are overlapped with the union of concurrent GAPs. For PCC or SDL SCC of LB CA via switching, part of the effective SMTC occasions of this intra-frequency measurement object are overlapped with the associated measurement gap and all the effective SMTC occasions of this intra-frequency measurement object are overlapped with the union of concurrent GAPs or with the union of concurrent GAPs and MUSIM gaps if MUSIM gaps are configured. For PCC or SDL SCC of LB CA via switching, CSI-RS based intra-frequency measurement, when all effective CSI-RS resources for Layer 3 (L3) measurement of this intra-frequency measurement object are partially overlapped with the associated measurement gap and all effective CSI-RS resources for L3 measurement of this intra-frequency measurement object are overlapped with the union of the configured concurrent GAPs.
[0044] Otherwise, the carrier-specific scaling factor CSSFwithin_gap, i for a measurement object i derived in this chapter is applied to following measurement types. For PCC or SDL SCC of LB CA via switching, SSB-based intra-frequency measurement object with no measurement gap, when all of the effective SMTC occasions of this intra-frequency measurement object are overlapped by the measurement gap. For PCC or SDL SCC of LB CA via switching, SSB-based intra-frequency measurement object with no measurement gap, when all of the effective SMTC occasions of this intra-frequency measurement object are overlapped by the measurement gap or the union of measurement gaps and MUSIM gaps. For PCC or SDL SCC of LB CA via switching, SSB-based intra-frequency measurement in clause 9.2.5 for UE supporting NeedForGaps-r18, and reporting ‘nogap-nointerruption’ for this intra-frequency layer via NeedForGapInfoNR-r18, when all of the effective SMTC occasions of this intra-frequency measurement object are overlapped by the measurement gap. For PCC or SDL SCC of LB CA via switching, SSB-based intra-frequency measurement for UE supporting NeedForGaps-r18 and reporting ‘nogap-withinterruption’ for this intra-frequency layer via NeedForGapInfoNR-r18, when: all of the effective SMTC occasions of this intra-frequency measurement object are overlapped by the measurement gap; or part of the effective SMTC occasions of this intra-frequency measurement object are overlapped by the measurement gap.
[0045] FIG. 7 is a flowchart illustrating a method 700 for a UE to perform RRM measurement resource allocation for low band CA via switching, according to embodiments herein. The illustrated method 700 includes switching 702 between a PCC and an SDL SCC according to a switching pattern, wherein during first durations of the switching pattern the UE transmits and receives on the PCC, and wherein during second durations of the switching pattern the UE receives on the SDL SCC. The method 700 further includes performing 704 SDL SCC SSB measurements on the SDL SCC during the second durations of the switching pattern according to a prioritization configuration for SMTC occasions on the SDL SCC that collide with MGs for inter-frequency SSB measurements.
[0046] In certain embodiments of the method 700, the prioritization configuration configures the UE to prioritize the SDL SCC SSB measurements and drop the MGs that collide with the SMTC occasions during the second durations of the switching pattern.
[0047] In certain embodiments of the method 700, the prioritization configuration configures the UE to prioritize the SDL SCC SSB measurements and drop the MGs when there is a single SMTC occasion during each of the second durations of the switching pattern.
[0048] In certain embodiments of the method 700, the prioritization configuration configures the UE to prioritize the SDL SCC SSB measurements on the SDL SCC and drop the MGs during the second durations of the switching pattern when at least one MG-based measurement does not collide with the SMTC occasions on the SDL SCC.
[0049] In certain embodiments of the method 700, the prioritization configuration configures the UE to allocate more measurement resources for the SDL SCC SSB measurements than for MG-based measurements. Further, over the second durations of the switching pattern, the UE uses a higher percentage of the SMTC occasions that collide with the MGs for the SDL SCC SSB measurements and a lower percentage of the SMTC occasions that collide with the MGs for the MG-based measurements.
[0050] In certain embodiments of the method 700, the prioritization configuration is based on measurement resource coordination between MG-based measurements and the SDL SCC SSB measurements inside the second durations of the switching pattern according to a carrier specific scaling factor (CSSF) and an overlapping condition of the SMTC occasions with the MGs on the SDL SCC. In certain such embodiments, the method 700 further includes, when the overlapping condition comprises the SMTC occasions on the SDL SCC fully overlapping the MGs during the second durations of the switching pattern, following the CSSF for allocating the measurement resources between the MG-based measurements and the SDL SCC SSB measurements. In certain embodiments, the method 700 further includes, when the overlapping condition comprises the SMTC occasions on the SDL SCC partially overlapping the MGs during the second durations of the switching pattern: performing the MG-based measurements when the SMTC occasions on the SDL SCC collide with the MGs during the second durations of the switching pattern; and performing the SDL SCC SSB measurements when the SMTC occasions on the SDL SCC do not collide with the MGs during the second durations of the switching pattern.
[0051] In other embodiments of the method 700, the overlapping condition is based on one or more of an SMTC configuration, the switching pattern and an MG configuration, and an effective SMTC configuration and the MG configuration. In certain such embodiments, the effective SMTC configuration configures measurement occasions that are counted in the CSSF as inside the MGs, wherein effective PCC SMTC occasions of the PCC are outside the second durations of the switching pattern when the UE stays on the SDL SCC, and wherein effective SMTC occasions of the SDL SCC are inside the second durations of the switching pattern when the UE stays on the SDL SCC. A partially overlapping status or a fully overlapping status of the overlapping condition may be based on time locations of the effective PCC SMTC occasions or the effective SMTC occasions with respect to the MGs. Alternatively, a partially overlapping status or a fully overlapping status of the overlapping condition is based on time locations of configured PCC SMTC occasions or configured SMTC occasions with respect to the MGs and the switching pattern.
[0052] In certain embodiments of the method 700, the prioritization configuration is based on a network indication. In certain such embodiments, the network indication indicates to drop, on overlapped measurement occasions, one or more of the MGs, the SMTC occasions on the SDL SCC, and SSB-based intra-frequency SMTC occasions on the PCC. In other embodiments, the network indication indicates resource allocation among one or more of the MGs, the SMTC occasions on the SDL SCC, and SSB-based intra-frequency SMTC occasions on the PCC.
[0053] FIG. 8 is a flowchart illustrating a method 800 for a base station to configure RRM measurement resource allocation, according to embodiments herein. The illustrated method 800 includes determining 802, for a UE configured for low band CA via switching, a prioritization configuration for measurement occasions overlapping with MGs on at least one of a PCC and an SDL SCC. The method 800 further includes transmitting 804, from the base station to the UE, the prioritization configuration.
[0054] In certain embodiments of the method 800, the prioritization configuration indicates to drop, on overlapped measurement occasions, one or more of the MGs, synchronization signal block (SSB) measurement timing configuration (SMTC) occasions on the SDL SCC, and SSB-based intra-frequency SMTC occasions on the PCC.
[0055] In certain embodiments of the method 800, the prioritization configuration indicates resource allocation among one or more of the MGs, synchronization signal block (SSB) measurement timing configuration (SMTC) occasions on the SDL SCC, and SSB-based intra-frequency SMTC occasions on the PCC.
[0056] In certain embodiments of the method 800, the UE is configured to switch between the PCC and the SDL SCC according to a switching pattern, wherein during first durations of the switching pattern the UE transmits and receives on the PCC, and wherein during second durations of the switching pattern the UE receives on the SDL SCC. In certain such embodiments, the prioritization configuration configures the UE to prioritize SDL SCC synchronization signal block (SSB) measurements and drop the MGs that collide with SSB measurement timing configuration (SMTC) occasions during the second durations of the switching pattern. In other embodiments, the prioritization configuration configures the UE to prioritize SDL SCC synchronization signal block (SSB) measurements and drop the MGs when there is a single SSB measurement timing configuration (SMTC) occasion during each of the second durations of the switching pattern. In other embodiments, the prioritization configuration configures the UE to prioritize SDL SCC synchronization signal block (SSB) measurements on the SDL SCC and drop the MGs during the second durations of the switching pattern when at least one MG-based measurement does not collide with SSB measurement timing configuration (SMTC) occasions on the SDL SCC. In other embodiments, the prioritization configuration configures the UE to allocate more measurement resources for SDL SCC synchronization signal block (SSB) measurements than for MG-based measurements, and over the second durations of the switching pattern, the prioritization configuration configures the UE to use a higher percentage of SSB measurement timing configuration (SMTC) occasions that collide with the MGs for the SDL SCC SSB measurements and a lower percentage of the SMTC occasions that collide with the MGs for the MG-based measurements.
[0057] In certain embodiments of the method 800, the prioritization configuration is based on measurement resource coordination between MG-based measurements and SDL SCC synchronization signal block (SSB) measurements inside the second durations of the switching pattern according to a carrier specific scaling factor (CSSF) and an overlapping condition of SSB measurement timing configuration (SMTC) occasions with the MGs on the SDL SCC. In certain such embodiments, the prioritization configuration configures the UE to, when the overlapping condition comprises the SMTC occasions on the SDL SCC fully overlapping the MGs during the second durations of the switching pattern, follow the CSSF for allocating measurement resources between the MG-based measurements and the SDL SCC SSB measurements. In other embodiments, the prioritization configuration configures the UE to, when the overlapping condition comprises the SMTC occasions on the SDL SCC partially overlapping the MGs during the second durations of the switching pattern: perform the MG-based measurements when the SMTC occasions on the SDL SCC collide with the MGs during the second durations of the switching pattern; and perform the SDL SCC SSB measurements when the SMTC occasions on the SDL SCC do not collide with the MGs during the second durations of the switching pattern.
[0058] In certain embodiments of the method 800, the overlapping condition is based on one or more of an SMTC configuration, the switching pattern and an MG configuration, and an effective SMTC configuration and the MG configuration. In certain such embodiments, the effective SMTC configuration configures measurement occasions that are counted in the CSSF as inside the MGs, wherein effective PCC SMTC occasions of the PCC are outside the second durations of the switching pattern when the UE stays on the SDL SCC, and wherein effective SMTC occasions of the SDL SCC are inside the second durations of the switching pattern when the UE stays on the SDL SCC. A partially overlapping status or a fully overlapping status of the overlapping condition is based on time locations of the effective PCC SMTC occasions or the effective SMTC occasions with respect to the MGs. Alternatively, a partially overlapping status or a fully overlapping status of the overlapping condition is based on time locations of configured PCC SMTC occasions or configured SMTC occasions with respect to the MGs and the switching pattern.
[0059] FIG. 9 illustrates an example architecture of a wireless communication system 900, according to embodiments disclosed herein. The following description is provided for an example wireless communication system 900 that operates in conjunction with the LTE system standards and / or 5G or NR system standards as provided by 3GPP technical specifications.
[0060] As shown by FIG. 9, the wireless communication system 900 includes UE 902 and UE 904 (although any number of UEs may be used) . In this example, the UE 902 and the UE 904 are illustrated as smartphones (e.g., handheld touchscreen mobile computing devices connectable to one or more cellular networks) , but may also comprise any mobile or non-mobile computing device configured for wireless communication.
[0061] The UE 902 and UE 904 may be configured to communicatively couple with a RAN 906. In embodiments, the RAN 906 may be NG-RAN, E-UTRAN, etc. The UE 902 and UE 904 utilize connections (or channels) (shown as connection 908 and connection 910, respectively) with the RAN 906, each of which comprises a physical communications interface. The RAN 906 can include one or more base stations (such as base station 912 and base station 914) that enable the connection 908 and connection 910.
[0062] In this example, the connection 908 and connection 910 are air interfaces to enable such communicative coupling, and may be consistent with RAT (s) used by the RAN 906, such as, for example, an LTE and / or NR.
[0063] In some embodiments, the UE 902 and UE 904 may also directly exchange communication data via a sidelink interface 916. The UE 904 is shown to be configured to access an access point (shown as AP 918) via connection 920. By way of example, the connection 920 can comprise a local wireless connection, such as a connection consistent with any IEEE 802.11 protocol, wherein the AP 918 may comprise a router. In this example, the AP 918 may be connected to another network (for example, the Internet) without going through a CN 924.
[0064] In embodiments, the UE 902 and UE 904 can be configured to communicate using orthogonal frequency division multiplexing (OFDM) communication signals with each other or with the base station 912 and / or the base station 914 over a multicarrier communication channel in accordance with various communication techniques, such as, but not limited to, an orthogonal frequency division multiple access (OFDMA) communication technique (e.g., for downlink communications) or a single carrier frequency division multiple access (SC-FDMA) communication technique (e.g., for uplink and ProSe or sidelink communications) , although the scope of the embodiments is not limited in this respect. The OFDM signals can comprise a plurality of orthogonal subcarriers.
[0065] In some embodiments, all or parts of the base station 912 or base station 914 may be implemented as one or more software entities running on server computers as part of a virtual network. In addition, or in other embodiments, the base station 912 or base station 914 may be configured to communicate with one another via interface 922. In embodiments where the wireless communication system 900 is an LTE system (e.g., when the CN 924 is an EPC) , the interface 922 may be an X2 interface. The X2 interface may be defined between two or more base stations (e.g., two or more eNBs and the like) that connect to an EPC, and / or between two eNBs connecting to the EPC. In embodiments where the wireless communication system 900 is an NR system (e.g., when CN 924 is a 5GC) , the interface 922 may be an Xn interface. The Xn interface is defined between two or more base stations (e.g., two or more gNBs and the like) that connect to 5GC, between a base station 912 (e.g., a gNB) connecting to 5GC and an eNB, and / or between two eNBs connecting to 5GC (e.g., CN 924) .
[0066] The RAN 906 is shown to be communicatively coupled to the CN 924. The CN 924 may comprise one or more network elements 926, which are configured to offer various data and telecommunications services to customers / subscribers (e.g., users of UE 902 and UE 904) who are connected to the CN 924 via the RAN 906. The components of the CN 924 may be implemented in one physical device or separate physical devices including components to read and execute instructions from a machine-readable or computer-readable medium (e.g., a non-transitory machine-readable storage medium) .
[0067] In embodiments, the CN 924 may be an EPC, and the RAN 906 may be connected with the CN 924 via an S1 interface 928. In embodiments, the S1 interface 928 may be split into two parts, an S1 user plane (S1-U) interface, which carries traffic data between the base station 912 or base station 914 and a serving gateway (S-GW) , and the S1-MME interface, which is a signaling interface between the base station 912 or base station 914 and mobility management entities (MMEs) .
[0068] In embodiments, the CN 924 may be a 5GC, and the RAN 906 may be connected with the CN 924 via an NG interface 928. In embodiments, the NG interface 928 may be split into two parts, an NG user plane (NG-U) interface, which carries traffic data between the base station 912 or base station 914 and a user plane function (UPF) , and the S1 control plane (NG-C) interface, which is a signaling interface between the base station 912 or base station 914 and access and mobility management functions (AMFs) .
[0069] Generally, an application server 930 may be an element offering applications that use internet protocol (IP) bearer resources with the CN 924 (e.g., packet switched data services) . The application server 930 can also be configured to support one or more communication services (e.g., VoIP sessions, group communication sessions, etc. ) for the UE 902 and UE 904 via the CN 924. The application server 930 may communicate with the CN 924 through an IP communications interface 932.
[0070] FIG. 10 illustrates a system 1000 for performing signaling 1034 between a wireless device 1002 and a network device 1018, according to embodiments disclosed herein. The system 1000 may be a portion of a wireless communications system as herein described. The wireless device 1002 may be, for example, a UE of a wireless communication system. The network device 1018 may be, for example, a base station (e.g., an eNB or a gNB) of a wireless communication system.
[0071] The wireless device 1002 may include one or more processor (s) 1004. The processor (s) 1004 may execute instructions such that various operations of the wireless device 1002 are performed, as described herein. The processor (s) 1004 may include one or more baseband processors implemented using, for example, a central processing unit (CPU) , a digital signal processor (DSP) , an application specific integrated circuit (ASIC) , a controller, a field programmable gate array (FPGA) device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein.
[0072] The wireless device 1002 may include a memory 1006. The memory 1006 may be a non-transitory computer-readable storage medium that stores instructions 1008 (which may include, for example, the instructions being executed by the processor (s) 1004) . The instructions 1008 may also be referred to as program code or a computer program. The memory 1006 may also store data used by, and results computed by, the processor (s) 1004.
[0073] The wireless device 1002 may include one or more transceiver (s) 1010 that may include radio frequency (RF) transmitter circuitry and / or receiver circuitry that use the antenna (s) 1012 of the wireless device 1002 to facilitate signaling (e.g., the signaling 1034) to and / or from the wireless device 1002 with other devices (e.g., the network device 1018) according to corresponding RATs.
[0074] The wireless device 1002 may include one or more antenna (s) 1012 (e.g., one, two, four, or more) . For embodiments with multiple antenna (s) 1012, the wireless device 1002 may leverage the spatial diversity of such multiple antenna (s) 1012 to send and / or receive multiple different data streams on the same time and frequency resources. This behavior may be referred to as, for example, multiple input multiple output (MIMO) behavior (referring to the multiple antennas used at each of a transmitting device and a receiving device that enable this aspect) . MIMO transmissions by the wireless device 1002 may be accomplished according to precoding (or digital beamforming) that is applied at the wireless device 1002 that multiplexes the data streams across the antenna (s) 1012 according to known or assumed channel characteristics such that each data stream is received with an appropriate signal strength relative to other streams and at a desired location in the spatial domain (e.g., the location of a receiver associated with that data stream) . Certain embodiments may use single user MIMO (SU-MIMO) methods (where the data streams are all directed to a single receiver) and / or multi user MIMO (MU-MIMO) methods (where individual data streams may be directed to individual (different) receivers in different locations in the spatial domain) .
[0075] In certain embodiments having multiple antennas, the wireless device 1002 may implement analog beamforming techniques, whereby phases of the signals sent by the antenna (s) 1012 are relatively adjusted such that the (joint) transmission of the antenna (s) 1012 can be directed (this is sometimes referred to as beam steering) .
[0076] The wireless device 1002 may include one or more interface (s) 1014. The interface (s) 1014 may be used to provide input to or output from the wireless device 1002. For example, a wireless device 1002 that is a UE may include interface (s) 1014 such as microphones, speakers, a touchscreen, buttons, and the like in order to allow for input and / or output to the UE by a user of the UE. Other interfaces of such a UE may be made up of transmitters, receivers, and other circuitry (e.g., other than the transceiver (s) 1010 / antenna (s) 1012 already described) that allow for communication between the UE and other devices and may operate according to known protocols (e.g., and the like) .
[0077] The wireless device 1002 may include an LB CA prioritization module 1016. The LB CA prioritization module 1016 may be implemented via hardware, software, or combinations thereof. For example, the LB CA prioritization module 1016 may be implemented as a processor, circuit, and / or instructions 1008 stored in the memory 1006 and executed by the processor (s) 1004. In some examples, the LB CA prioritization module 1016 may be integrated within the processor (s) 1004 and / or the transceiver (s) 1010. For example, the LB CA prioritization module 1016 may be implemented by a combination of software components (e.g., executed by a DSP or a general processor) and hardware components (e.g., logic gates and circuitry) within the processor (s) 1004 or the transceiver (s) 1010.
[0078] The LB CA prioritization module 1016 may be used for various aspects of the present disclosure, for example, aspects of FIG. 1, FIG. 2, FIG. 3, FIG. 4A, FIG. 4B, FIG. 5, FIG. 6 and FIG. 7. The LB CA prioritization module 1016 is configured to cause the wireless device 1002 to switch between a PCC and an SDL SCC according to a switching pattern, wherein during first durations of the switching pattern the UE transmits and receives on the PCC, and wherein during second durations of the switching pattern the UE receives on the SDL SCC. The LB CA prioritization module 1016 is further configured to cause the wireless device 1002 to perform SDL SCC SSB measurements on the SDL SCC during the second durations of the switching pattern according to a prioritization configuration for SMTC occasions on the SDL SCC that collide with MGs for inter-frequency SSB measurements.
[0079] The network device 1018 may include one or more processor (s) 1020. The processor (s) 1020 may execute instructions such that various operations of the network device 1018 are performed, as described herein. The processor (s) 1020 may include one or more baseband processors implemented using, for example, a CPU, a DSP, an ASIC, a controller, an FPGA device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein.
[0080] The network device 1018 may include a memory 1022. The memory 1022 may be a non-transitory computer-readable storage medium that stores instructions 1024 (which may include, for example, the instructions being executed by the processor (s) 1020) . The instructions 1024 may also be referred to as program code or a computer program. The memory 1022 may also store data used by, and results computed by, the processor (s) 1020.
[0081] The network device 1018 may include one or more transceiver (s) 1026 that may include RF transmitter circuitry and / or receiver circuitry that use the antenna (s) 1028 of the network device 1018 to facilitate signaling (e.g., the signaling 1034) to and / or from the network device 1018 with other devices (e.g., the wireless device 1002) according to corresponding RATs.
[0082] The network device 1018 may include one or more antenna (s) 1028 (e.g., one, two, four, or more) . In embodiments having multiple antenna (s) 1028, the network device 1018 may perform MIMO, digital beamforming, analog beamforming, beam steering, etc., as has been described.
[0083] The network device 1018 may include one or more interface (s) 1030. The interface (s) 1030 may be used to provide input to or output from the network device 1018. For example, a network device 1018 that is a base station may include interface (s) 1030 made up of transmitters, receivers, and other circuitry (e.g., other than the transceiver (s) 1026 / antenna (s) 1028 already described) that enables the base station to communicate with other equipment in a core network, and / or that enables the base station to communicate with external networks, computers, databases, and the like for purposes of operations, administration, and maintenance of the base station or other equipment operably connected thereto.
[0084] The network device 1018 may include an LB CA prioritization module 1032. The LB CA prioritization module 1032 may be implemented via hardware, software, or combinations thereof. For example, the LB CA prioritization module 1032 may be implemented as a processor, circuit, and / or instructions 1024 stored in the memory 1022 and executed by the processor (s) 1020. In some examples, the LB CA prioritization module 1032 may be integrated within the processor (s) 1020 and / or the transceiver (s) 1026. For example, the LB CA prioritization module 1032 may be implemented by a combination of software components (e.g., executed by a DSP or a general processor) and hardware components (e.g., logic gates and circuitry) within the processor (s) 1020 or the transceiver (s) 1026.
[0085] The LB CA prioritization module 1032 may be used for various aspects of the present disclosure, for example, aspects of FIG. 1, FIG. 2, FIG. 3, FIG. 4A, FIG. 4B, FIG. 5, FIG. 6 and FIG. 8. The LB CA prioritization module 1032 is configured to cause the network device 1018 to determine, for wireless device 1002 configured for low band CA via switching, a prioritization configuration for measurement occasions overlapping with MGs on at least one of a PCC and an SDL SCC. The LB CA prioritization module 1032 is further configured to cause the network device 1018 to transmit, from the network device 1018 to the wireless device 1002, the prioritization configuration.
[0086] Embodiments contemplated herein include an apparatus comprising means to perform one or more elements of the method 700. This apparatus may be, for example, an apparatus of a UE (such as a wireless device 1002 that is a UE, as described herein) .
[0087] Embodiments contemplated herein include one or more non-transitory computer-readable media comprising instructions to cause an electronic device, upon execution of the instructions by one or more processors of the electronic device, to perform one or more elements of the method 700. This non-transitory computer-readable media may be, for example, a memory of a UE (such as a memory 1006 of a wireless device 1002 that is a UE, as described herein) .
[0088] Embodiments contemplated herein include an apparatus comprising logic, modules, or circuitry to perform one or more elements of the method 700. This apparatus may be, for example, an apparatus of a UE (such as a wireless device 1002 that is a UE, as described herein) .
[0089] Embodiments contemplated herein include an apparatus comprising: one or more processors and one or more computer-readable media comprising instructions that, when executed by the one or more processors, cause the one or more processors to perform one or more elements of the method 700. This apparatus may be, for example, an apparatus of a UE (such as a wireless device 1002 that is a UE, as described herein) .
[0090] Embodiments contemplated herein include a signal as described in or related to one or more elements of the method 700.
[0091] Embodiments contemplated herein include a computer program or computer program product comprising instructions, wherein execution of the program by a processor is to cause the processor to carry out one or more elements of the method 700. The processor may be a processor of a UE (such as a processor (s) 1004 of a wireless device 1002 that is a UE, as described herein) . These instructions may be, for example, located in the processor and / or on a memory of the UE (such as a memory 1006 of a wireless device 1002 that is a UE, as described herein) .
[0092] Embodiments contemplated herein include an apparatus comprising means to perform one or more elements of the method 800. This apparatus may be, for example, an apparatus of a base station (such as a network device 1018 that is a base station, as described herein) .
[0093] Embodiments contemplated herein include one or more non-transitory computer-readable media comprising instructions to cause an electronic device, upon execution of the instructions by one or more processors of the electronic device, to perform one or more elements of the method 800. This non-transitory computer-readable media may be, for example, a memory of a base station (such as a memory 1022 of a network device 1018 that is a base station, as described herein) .
[0094] Embodiments contemplated herein include an apparatus comprising logic, modules, or circuitry to perform one or more elements of the method 800. This apparatus may be, for example, an apparatus of a base station (such as a network device 1018 that is a base station, as described herein) .
[0095] Embodiments contemplated herein include an apparatus comprising: one or more processors and one or more computer-readable media comprising instructions that, when executed by the one or more processors, cause the one or more processors to perform one or more elements of the method 800. This apparatus may be, for example, an apparatus of a base station (such as a network device 1018 that is a base station, as described herein) .
[0096] Embodiments contemplated herein include a signal as described in or related to one or more elements of the method 800.
[0097] Embodiments contemplated herein include a computer program or computer program product comprising instructions, wherein execution of the program by a processing element is to cause the processing element to carry out one or more elements of the method 800. The processor may be a processor of a base station (such as a processor (s) 1020 of a network device 1018 that is a base station, as described herein) . These instructions may be, for example, located in the processor and / or on a memory of the base station (such as a memory 1022 of a network device 1018 that is a base station, as described herein) .
[0098] For one or more embodiments, at least one of the components set forth in one or more of the preceding figures may be configured to perform one or more operations, techniques, processes, and / or methods as set forth herein. For example, a baseband processor as described herein in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth herein. For another example, circuitry associated with a UE, base station, network element, etc. as described above in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth herein.
[0099] Any of the above described embodiments may be combined with any other embodiment (or combination of embodiments) , unless explicitly stated otherwise. The foregoing description of one or more implementations provides illustration and description, but is not intended to be exhaustive or to limit the scope of embodiments to the precise form disclosed. Modifications and variations are possible in light of the above teachings or may be acquired from practice of various embodiments.
[0100] Embodiments and implementations of the systems and methods described herein may include various operations, which may be embodied in machine-executable instructions to be executed by a computer system. A computer system may include one or more general-purpose or special-purpose computers (or other electronic devices) . The computer system may include hardware components that include specific logic for performing the operations or may include a combination of hardware, software, and / or firmware.
[0101] It should be recognized that the systems described herein include descriptions of specific embodiments. These embodiments can be combined into single systems, partially combined into other systems, split into multiple systems or divided or combined in other ways. In addition, it is contemplated that parameters, attributes, aspects, etc. of one embodiment can be used in another embodiment. The parameters, attributes, aspects, etc. are merely described in one or more embodiments for clarity, and it is recognized that the parameters, attributes, aspects, etc. can be combined with or substituted for parameters, attributes, aspects, etc. of another embodiment unless specifically disclaimed herein.
[0102] 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.
[0103] Although the foregoing has been described in some detail for purposes of clarity, it will be apparent that certain changes and modifications may be made without departing from the principles thereof. It should be noted that there are many alternative ways of implementing both the processes and apparatuses described herein. Accordingly, the present embodiments are to be considered illustrative and not restrictive, and the description is not to be limited to the details given herein, but may be modified within the scope and equivalents of the appended claims.
Claims
1.A method for a user equipment (UE) to perform radio resource management (RRM) measurement resource allocation for low band carrier aggregation (CA) via switching, the method comprising:switching between a primary component carrier (PCC) and a supplementary downlink (SDL) secondary component carrier (SCC) according to a switching pattern, wherein during first durations of the switching pattern the UE transmits and receives on the PCC, and wherein during second durations of the switching pattern the UE receives on the SDL SCC; andperforming SDL SCC synchronization signal block (SSB) measurements on the SDL SCC during the second durations of the switching pattern according to a prioritization configuration for SSB measurement timing configuration (SMTC) occasions on the SDL SCC that collide with measurement gaps (MGs) for inter-frequency SSB measurements.2.The method of claim 1, wherein the prioritization configuration configures the UE to prioritize the SDL SCC SSB measurements and drop the MGs that collide with the SMTC occasions during the second durations of the switching pattern.3.The method of claim 1, wherein the prioritization configuration configures the UE to prioritize the SDL SCC SSB measurements and drop the MGs when there is a single SMTC occasion during each of the second durations of the switching pattern.4.The method of claim 1, wherein the prioritization configuration configures the UE to prioritize the SDL SCC SSB measurements on the SDL SCC and drop the MGs during the second durations of the switching pattern when at least one MG-based measurement does not collide with the SMTC occasions on the SDL SCC.5.The method of claim 1, wherein the prioritization configuration configures the UE to allocate more measurement resources for the SDL SCC SSB measurements than for MG-based measurements, andwherein, over the second durations of the switching pattern, the UE uses a higher percentage of the SMTC occasions that collide with the MGs for the SDL SCC SSB measurements and a lower percentage of the SMTC occasions that collide with the MGs for the MG-based measurements.6.The method of claim 1, wherein the prioritization configuration is based on measurement resource coordination between MG-based measurements and the SDL SCC SSB measurements inside the second durations of the switching pattern according to a carrier specific scaling factor (CSSF) and an overlapping condition of the SMTC occasions with the MGs on the SDL SCC.7.The method of claim 6, further comprising, when the overlapping condition comprises the SMTC occasions on the SDL SCC fully overlapping the MGs during the second durations of the switching pattern, following the CSSF for allocating the measurement resources between the MG-based measurements and the SDL SCC SSB measurements.8.The method of claim 6, further comprising, when the overlapping condition comprises the SMTC occasions on the SDL SCC partially overlapping the MGs during the second durations of the switching pattern:performing the MG-based measurements when the SMTC occasions on the SDL SCC collide with the MGs during the second durations of the switching pattern; andperforming the SDL SCC SSB measurements when the SMTC occasions on the SDL SCC do not collide with the MGs during the second durations of the switching pattern.9.The method of claim 6, wherein the overlapping condition is based on one or more of an SMTC configuration, the switching pattern and an MG configuration, and an effective SMTC configuration and the MG configuration.10.The method of claim 9, wherein the effective SMTC configuration configures measurement occasions that are counted in the CSSF as inside the MGs,wherein effective PCC SMTC occasions of the PCC are outside the second durations of the switching pattern when the UE stays on the SDL SCC, andwherein effective SMTC occasions of the SDL SCC are inside the second durations of the switching pattern when the UE stays on the SDL SCC.11.The method of claim 10, wherein a partially overlapping status or a fully overlapping status of the overlapping condition is based on time locations of the effective PCC SMTC occasions or the effective SMTC occasions with respect to the MGs.12.The method of claim 10, wherein a partially overlapping status or a fully overlapping status of the overlapping condition is based on time locations of configured PCC SMTC occasions or configured SMTC occasions with respect to the MGs and the switching pattern.13.The method of claim 1, wherein the prioritization configuration is based on a network indication.14.The method of claim 13, wherein the network indication indicates to drop, on overlapped measurement occasions, one or more of the MGs, the SMTC occasions on the SDL SCC, and SSB-based intra-frequency SMTC occasions on the PCC.15.The method of claim 13, wherein the network indication indicates resource allocation among one or more of the MGs, the SMTC occasions on the SDL SCC, and SSB-based intra-frequency SMTC occasions on the PCC.16.A method for a base station to configure radio resource management (RRM) measurement resource allocation, the method comprising:determining, for a user equipment (UE) configured for low band carrier aggregation (CA) via switching, a prioritization configuration for measurement occasions overlapping with measurement gaps (MGs) on at least one of a primary component carrier (PCC) and a supplementary downlink (SDL) secondary component carrier (SCC) ; andtransmitting, from the base station to the UE, the prioritization configuration.17.The method of claim 16, wherein the prioritization configuration indicates to drop, on overlapped measurement occasions, one or more of the MGs, synchronization signal block (SSB) measurement timing configuration (SMTC) occasions on the SDL SCC, and SSB-based intra-frequency SMTC occasions on the PCC.18.The method of claim 16, wherein the prioritization configuration indicates resource allocation among one or more of the MGs, synchronization signal block (SSB) measurement timing configuration (SMTC) occasions on the SDL SCC, and SSB-based intra-frequency SMTC occasions on the PCC.19.The method of claim 16, wherein the UE is configured to switch between the PCC and the SDL SCC according to a switching pattern, wherein during first durations of the switching pattern the UE transmits and receives on the PCC, and wherein during second durations of the switching pattern the UE receives on the SDL SCC.20.The method of claim 19, wherein the prioritization configuration configures the UE to prioritize SDL SCC synchronization signal block (SSB) measurements and drop the MGs that collide with SSB measurement timing configuration (SMTC) occasions during the second durations of the switching pattern.21.The method of claim 19, wherein the prioritization configuration configures the UE to prioritize SDL SCC synchronization signal block (SSB) measurements and drop the MGs when there is a single SSB measurement timing configuration (SMTC) occasion during each of the second durations of the switching pattern.22.The method of claim 19, wherein the prioritization configuration configures the UE to prioritize SDL SCC synchronization signal block (SSB) measurements on the SDL SCC and drop the MGs during the second durations of the switching pattern when at least one MG-based measurement does not collide with SSB measurement timing configuration (SMTC) occasions on the SDL SCC.23.The method of claim 19, wherein the prioritization configuration configures the UE to allocate more measurement resources for SDL SCC synchronization signal block (SSB) measurements than for MG-based measurements, andwherein, over the second durations of the switching pattern, the prioritization configuration configures the UE to use a higher percentage of SSB measurement timing configuration (SMTC) occasions that collide with the MGs for the SDL SCC SSB measurements and a lower percentage of the SMTC occasions that collide with the MGs for the MG-based measurements.24.The method of claim 19, wherein the prioritization configuration is based on measurement resource coordination between MG-based measurements and SDL SCC synchronization signal block (SSB) measurements inside the second durations of the switching pattern according to a carrier specific scaling factor (CSSF) and an overlapping condition of SSB measurement timing configuration (SMTC) occasions with the MGs on the SDL SCC.25.The method of claim 24, wherein the prioritization configuration configures the UE to, when the overlapping condition comprises the SMTC occasions on the SDL SCC fully overlapping the MGs during the second durations of the switching pattern, follow the CSSF for allocating measurement resources between the MG-based measurements and the SDL SCC SSB measurements.26.The method of claim 24, wherein the prioritization configuration configures the UE to, when the overlapping condition comprises the SMTC occasions on the SDL SCC partially overlapping the MGs during the second durations of the switching pattern:perform the MG-based measurements when the SMTC occasions on the SDL SCC collide with the MGs during the second durations of the switching pattern; andperform the SDL SCC SSB measurements when the SMTC occasions on the SDL SCC do not collide with the MGs during the second durations of the switching pattern.27.The method of claim 24, wherein the overlapping condition is based on one or more of an SMTC configuration, the switching pattern and an MG configuration, and an effective SMTC configuration and the MG configuration.28.The method of claim 27, wherein the effective SMTC configuration configures measurement occasions that are counted in the CSSF as inside the MGs,wherein effective PCC SMTC occasions of the PCC are outside the second durations of the switching pattern when the UE stays on the SDL SCC, andwherein effective SMTC occasions of the SDL SCC are inside the second durations of the switching pattern when the UE stays on the SDL SCC.29.The method of claim 28, wherein a partially overlapping status or a fully overlapping status of the overlapping condition is based on time locations of the effective PCC SMTC occasions or the effective SMTC occasions with respect to the MGs.30.The method of claim 28, wherein a partially overlapping status or a fully overlapping status of the overlapping condition is based on time locations of configured PCC SMTC occasions or configured SMTC occasions with respect to the MGs and the switching pattern.31.An apparatus comprising means to perform the method of any one of claim 1 to claim 30.32.A computer-readable media comprising instructions to cause an electronic device, upon execution of the instructions by one or more processors of the electronic device, to perform the method of any one of claim 1 to claim 30.33.An apparatus comprising logic, modules, or circuitry to perform the method of any one of claim 1 to claim 30.34.A baseband processor for a user equipment (UE) that is configured to cause the UE to perform one or more elements of any one of claim 1 to claim 15.35.A baseband processor for a base station that is configured to cause the base station to perform one or more elements of any one of claim 16 to claim 30.