L3 measurement delay reduction activation and deactivation
The conditional activation and deactivation of fast beam sweeping mode using multiple antenna panels addresses L3 measurement delays by optimizing power consumption and mobility, enhancing UE performance in wireless communication systems.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-10-04
- Publication Date
- 2026-04-09
AI Technical Summary
Existing wireless communication systems face challenges in efficiently reducing L3 measurement delays for user equipment (UE) with multiple antenna panels, particularly in scenarios where only one panel is activated, leading to suboptimal power consumption and mobility performance.
Implementing conditional activation and deactivation of fast beam sweeping (FBS) mode using multiple antenna panels based on UE power saving needs, mobility state, and QoS requirements, with a configured timer for deactivation to balance power consumption and performance.
Enhances L3 measurement speed and reduces handover interruption by optimizing beam sweeping, balancing power consumption and mobility performance through intelligent panel activation and deactivation.
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Figure CN2024123247_09042026_PF_FP_ABST
Abstract
Description
L3 Measurement Delay Reduction Activation and DeactivationTechnical Field
[0001] The present disclosure generally relates to wireless communication, and in particular, to L3 measurement delay reduction activation and deactivation.Background
[0002] A user equipment (UE) may perform mobility-related measurements, e.g., synchronization signal block (SSB) based layer 3 (L3) measurements, for various operations including handover. Some UEs are equipped with multiple antenna panels, e.g., two antenna panels, to support simultaneous downlink (DL) reception by multiple receive (Rx) chains. However, it is common for only one antenna panel to be activated in many deployment scenarios.
[0003] It is an objective in 5G New Radio (NR) development to support SSB based L3 measurement delay reduction for UEs supporting simultaneous DL reception by multiple Rx chains on a single carrier. The multi-Rx functionality by multiple antenna panels may be activated for the UE to accelerate the L3 measurements and achieve such delay reduction. Accordingly, it is an objective to specify how and when to activate the multi-Rx functionality to accelerate the L3 measurements.Summary
[0004] Some example embodiments are related to an apparatus having processing circuitry configured to generate, for transmission to a serving cell, an indication of a level of need for power saving, process, based on signaling from the serving cell, a configuration for conditional activation and deactivation of a fast beam sweeping (FBS) mode, the configuration including one or more conditions for activating the FBS mode and a timer for deactivating the FBS mode, when the one or more conditions are met, activate the FBS mode by activating multiple antenna panels enabling simultaneous downlink reception by multiple receive (Rx) chains and start the timer and deactivate the FBS mode by deactivating an antenna panel upon expiry of the timer.
[0005] Other example embodiments are related to a method for generating, for transmission to a serving cell, an indication of a level of need for power saving, processing, based on signaling from the serving cell, a configuration for conditional activation and deactivation of a fast beam sweeping (FBS) mode, the configuration including one or more conditions for activating the FBS mode and a timer for deactivating the FBS mode, when the one or more conditions are met, activating the FBS mode by activating multiple antenna panels enabling simultaneous downlink reception by multiple receive (Rx) chains and start the timer and deactivating the FBS mode by deactivating an antenna panel upon expiry of the timer.Brief Description of the Drawings
[0006] Fig. 1 shows an example UE including a first antenna panel and a second antenna panel according to various example embodiments.
[0007] Fig. 2a shows a method for conditional activation of fast beam sweeping (FBS) by two antenna panels according to various example embodiments.
[0008] Fig. 2b shows a flowchart for conditional activation of FBS by multiple antenna panels according to various example embodiments.
[0009] Fig. 3 shows an example network arrangement according to various example embodiments.
[0010] Fig. 4 shows an example user equipment (UE) according to various example embodiments.
[0011] Fig. 5 shows an example base station according to various example embodiments.Detailed Description
[0012] 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 relate to operations for supporting conditional activation and deactivation of fast beam sweeping (FBS) (or fast Layer 3 (L3) measurements) in which the UE activates multiple antenna panels for L3 measurement delay reduction.
[0013] 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 signaling and / or data with the network. Therefore, the UE as described herein is used to represent any electronic component.
[0014] The example embodiments are also described with reference to a 5G New Radio (NR) network. However, reference to a 5G NR network is merely provided for illustrative purposes. The example embodiments may be utilized with any network implementing functionalities similar to those described herein. Therefore, the 5G NR network as described herein may represent any type of network implementing functionalities similar to the 5G NR network, e.g., 5G-Advanced networks, 6G networks, etc.
[0015] The example embodiments are further described with regard to handover (HO) . HO may be performed by L3 (RRC) and may be based on radio resource management (RRM) measurements generated by the UE. In UE-initiated HO, the UE may evaluate various predefined conditions in view of its RRM measurements and, when the conditions are met, may request a HO. In network-initiated HO, the serving cell may determine the handover should be performed without first receiving the UE request. In either case, the serving cell may evaluate whether a HO should be performed for the UE based on various potential factors, including the RRM measurements reported by the UE. The serving cell (source cell) may select a target cell and the target cell may be prepared for HO of the UE. The serving cell may then transmit a handover command to the UE via radio resource control (RRC) reconfiguration and provide parameters for the target cell so that the UE may switch to the target cell without significant interruption to the network connection, e.g., without requiring an RRC reestablishment procedure.
[0016] Conditional handover (CHO) relates to operations in which the network provides the UE with a list of one or more candidate target cell (s) for CHO and a corresponding configuration for these target cell (s) , which are prepared for handover in advance. For each target cell, the source gNB provides at least one condition for the UE to perform CHO. The condition (s) may relate to a radio quality for the source cell and / or the target cell as determined by the UE, e.g., whether the radio conditions on the current serving cell fall below a threshold Reference Signal Received Power (RSRP) / Reference Signal Received Quality (RSRQ) / Signal to Interference Noise Ratio (SINR) , whether the radio conditions of a neighbor cell meet a threshold RSRP / RSRQ / SINR, and / or whether a differential between the radio conditions on the serving cell and the neighbor cell meet a threshold RSRP / RSRQ / SINR. The UE performs measurements on the serving / target cells and, when the condition is satisfied for a target cell, the UE starts CHO and applies the preconfigured target cell configuration immediately.
[0017] For HO and CHO, the UE may measure L3 radio conditions, e.g., cell quality conditions, such as RSRP, RSRQ, SINR, hysteresis, and offset for the current serving cell and / or candidate cells and evaluate a configured measurement event or combination of measurement events (HO conditions) . The HO may be triggered based on the L3 measurements / conditions.
[0018] A UE may be equipped with multiple antenna panels, e.g., two antenna panels. Such UEs may support simultaneous downlink (DL) reception by multiple receive (Rx) chains on a single carrier.
[0019] Fig. 1 shows an example UE 100 including a first antenna panel 110 and a second antenna panel 120 according to various example embodiments. Each antenna panel 110, 120 may generate a number of L3 beams, e.g., beams 111 of the first antenna panel 110 and beams 121 of the second antenna panel 120. In multi-Rx operation, the UE 100 may measure reference signals (RS) from a first base station or transmission and reception point (TRP) (e.g., from a first direction) by the first antenna panel 110 and from a second base station or TRP (e.g., from a second direction) by the second antenna panel 120.
[0020] Generating L3 measurements from multiple Rx chains may facilitate mobility operations, e.g., handover, by allowing the network to quickly switch serving cells. In Rel-19, it is an objective to support FR2-1 SSB based L3 measurement delay reduction for a UE supporting simultaneous DL reception by multiple Rx chains on a single carrier. It is proposed to achieve such L3 measurement delay reduction by optimizing a Rx beam sweeping factor. It is an objective to specify how and when to trigger the activation of multi-RX to speed up the L3 measurement in consideration of UE power consumption, UE location, and UE mobility.
[0021] According to various example embodiments, operations are described for supporting conditional activation and deactivation of fast beam sweeping (FBS) (or fast L3 measurements) in which the UE activates two antenna panels for L3 measurement delay reduction. In some aspects, the conditional activation / deactivation of FBS is based on factors including UE power saving, mobility state, cell edge state, and QoS requirements. The term “FBS mode” as used herein refers to a UE mode in which FBS is activated and two antenna panels are used for L3 measurements. Additionally, the terms “FBS” and “fast L3 measurement” may, in some cases, be used interchangeably.
[0022] In some example embodiments, FBS may be activated by the UE (e.g., the UE enters the FBS mode) when FBS activation conditions are met. The activation conditions are configured by the network for monitoring and / or evaluation by the UE and may be based on the UE mobility state, the UE location, and UE quality of service (QoS) requirements. When the FBS conditions are met, the UE enters (or remains in) the FBS mode and, when the FBS conditions are not met, the UE exits (or remains out of) the FBS mode.
[0023] In general, the FBS mode may be activated in scenarios where the UE is, e.g., in a high mobility state, near the cell edge, or needs critical QoS. The FBS operation may improve UE operation by allowing the UE to minimize handover interruption time or receiving better service from another cell even when the UE is not at the cell edge of its current serving cell but the current serving cell cannot provide sufficiently large bandwidth and / or a short enough delay to meet the service need of the UE, e.g., for critical QoS services. However, the activation of two antenna panels for multi-Rx beam sweeping imposes a higher power consumption on the UE. Accordingly, the desirable effects of FBS operation should be balanced with the increased power consumption.
[0024] Thus, in some example embodiments, an FBS activation timer may be used to deactivate the FBS mode after a timer duration has elapsed. In some example embodiments, the FBS activation timer may be configured for the UE by the network based on UE indication of a need for power savings. If the UE has a high need for power savings, the timer value may be relatively low and, if the UE has a low need for power savings, the timer value may be relatively high.
[0025] Fig. 2a shows a method 200 for conditional activation of fast beam sweeping (FBS) by multiple antenna panels according to various example embodiments. The method 200 is described from the perspective of a UE in the radio resource control (RRC) connected state with a serving cell of a 5G network.
[0026] In 205, the UE reports a FBS (or fast L3 measurement) capability. In 210, the UE transmits to the network an indication of a level of need for power saving. The UE may transmit such an indication at any time when the UE is not in FBS operation.
[0027] The indication of a need for power savings may be transmitted by the UE via RRC signaling, e.g., by UE assistance information (UAI) , by medium access control (MAC) control element (MAC-CE) , or by uplink control information (UCI) . The UE may determine the need for power savings based on a determination of a battery state (e.g., battery usage, remaining battery power) , a thermal state (e.g., thermal or heat parameter) , other power-related considerations. In some example embodiments, the level of need for power saving may be selected from a range of pre-defined values ranging from low need (or no need) to high need (or crucial need) , e.g., on a numeric scale such as 1-5. The values for indicating the need for power saving may be defined in standards, e.g., 3GPP Technical Specification.
[0028] In 215, the UE processes a configuration for conditional activation / deactivation of FBS. To enter the FBS mode, certain predefined conditions may be satisfied with respect to the UE mobility state, UE location, and UE QoS requirements. In one aspect of the conditional FBS configuration, the network may configure such conditions.
[0029] The FBS conditions for UE mobility, location, and QoS may be defined in various ways. In one aspect, the mobility-related FBS condition may consider the mobility state defined according to the mobility evaluation criteria in 3GPP TS 38.331. The UE may detect the high mobility state based on, e.g., signal quality degradation, frequency of handover, and / or other considerations. In this case, the FBS condition may comprise the high mobility state. In another aspect, the mobility state and / or mobility-related FBS condition may be left to UE implementation based on its own evaluation criteria. In some example embodiments, the mobility-related FBS condition may comprise a comparison of a current L3 RSRP measurement (SS-RSRP) (dB) and a reference L3 RSRP measurement (SS-RSRPREF) (dB) over an evaluation period (Tmobility_evaluation) , e.g., SS-RSRP -SS-RSRPREF > threshold, for a period of Tmobility_evaluation. If the criterion is not met during Tmobility_evaluation, the value of SS-RSRPREF is set to SS-RSRP and the condition is reevaluated during a next Tmobility_evaluation. The parameters SS-RSRPREF, threshold, and Tmobility_evaluation may be configurable by the network.
[0030] In another aspect, the location-related FBS condition may consider the cell quality state defined according to the cell quality evaluation criteria in 3GPP TS 38.331. The UE may detect, e.g., good serving cell quality, bad serving cell quality, a cell-edge state, etc., based on signal quality thresholds for the serving cell and / or neighbor cells or L3 measurement events corresponding to the serving / neighbor cells. In this case, the location-related FBS condition may comprise the cell-edge state or bad serving cell quality. In another aspect, the location-related FBS condition may be left to UE implementation based on its own evaluation criteria. In some example embodiments, the location-related FBS condition may include an evaluation of the difference between the serving cell SS-RSRP and a neighboring cell SS-RSRP.
[0031] In another aspect, the QoS-related FBS condition may consider the type of service the UE is currently supporting. Certain types of data traffic may be associated with high priority QoS. In this case, the QoS-related FBS condition may be defined based on a type of service (e.g., access category) having high priority QoS or based on QoS parameters for the service.
[0032] Accordingly, in the conditional FBS configuration, the network may configure one or more of the above-described FBS conditions for triggering the activation of FBS operation.
[0033] In another aspect of the conditional FBS configuration, the network may configure a FBS activation timer ‘T. ’ The network may determine a value for the timer ‘T’ based on the level of need for power savings indicated by the UE. In one option, the mapping between the indicated level of need for power saving and the value of the FBS timer ‘T’ may be hard-coded in standards, e.g., 3GPP TS. In another option, only the indicated level of need for power saving is hard-coded in standards, and it is up to network to configure T.
[0034] In 220, the UE monitors the configured conditions. As described above, in some examples, if UE is in high mobility, near cell edge, or needs critical QoS, the conditions are met. In 225, when the conditions are met, the UE enters the FBS mode, e.g., the UE activates both antenna panels for simultaneous Rx beam sweeping. When the UE enters the FBS mode the UE starts the FBS activation timer. In some embodiments, the UE may inform the network that the FBS mode has been entered.
[0035] The UE may remain in the FBS mode as long as the conditions are met and the FBS activation timer has not expired. If the conditions are no longer met, or the FBS activation timer expires, the UE may exit the FBS mode, e.g., activate only a single antenna panel for single Rx beam sweeping. In some example embodiments, the UE may inform the network that FBS mode has been exited. In some example embodiments, the UE may reassess its need for power savings and, when the UE informs the network that FBS mode has been exited, the UE may update the network by indicating a current need for power saving. As noted above, the UE may update the network regarding its power savings needs any time the UE is not in the FBS mode.
[0036] In some aspects, to prevent frequent activation and deactivation of FBS, there could be a prohibit timer set by the network. Before the prohibit timer expires, the UE cannot re-enter FBS operation after exiting FBS operation. Such prohibit timer may also serve to avoid some ping-pong effects.
[0037] Fig. 2b shows a flowchart 250 for conditional activation of FBS by multiple antenna panels according to various example embodiments. The flowchart 250 includes UE steps and network steps for a UE in the RRC connected state with a serving cell of the 5G network.
[0038] In 252, the UE reports or otherwise indicates the FBS (or fast L3 measurement) capability. In 254, when the UE has not yet informed the network of its power saving needs and / or is not in FBS operation, the UE transmits to the network an indication of a level of need for power saving, e.g., via RRC, MAC-CE or UCI.
[0039] In 256, the network configures the UE for conditional activation / deactivation of FBS, the conditions being based on mobility state, location, and / or QoS requirement. The configuration further includes the FBS activation timer ‘T’ determined by the network based on the level of need for power savings indicated by the UE.
[0040] In 258, the UE monitors the configured conditions. When the conditions are not met in 260 the UE continues monitoring conditions in 258. When the conditions are met in 260 then, in 262, the UE enters the FBS mode, e.g., activates both antenna panels for simultaneous Rx beam sweeping and starts the FBS activation timer. If the FBS activation timer T has not expired in 264, then, in 266, the UE remains in FBS mode and continues monitoring conditions. As long as the conditions are met in 268, and the FBS activation timer T has not expired in 264, then the UE remains in FBS mode. If the timer T expires in 264, or the conditions are no longer met in 268, then, in 270, the UE deactivates FBS, updates its level of need for power saving, and informs the network of such deactivation and current need. In 272, the network reconfigures conditional FBS activation with an updated FBS activation timer. If the level of need for power saving changed between 254 and 272 then the updated FBS activation timer may comprise a different value than the initially configured FBS activation timer.
[0041] Fig. 3 shows an example network arrangement 300 according to various example embodiments. The example network arrangement 300 includes a UE 310. The UE 310 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. An actual network arrangement may include any number of UEs being used by any number of users. Thus, the example of one UE 310 is merely provided for illustrative purposes.
[0042] The UE 310 may be configured to communicate with one or more networks. In the example of the network arrangement 300, the network with which the UE 310 may wirelessly communicate is a 5G NR radio access network (RAN) 320. However, the UE 310 may also communicate with other types of networks (e.g., 5G cloud RAN, a next generation RAN (NG-RAN) , a legacy cellular network, etc. ) and the UE 310 may also communicate with networks over a wired connection. With regard to the example embodiments, the UE 310 may establish a connection with the 5G NR RAN 320. Therefore, the UE 310 may have a 5G NR chipset to communicate with the NR RAN 320.
[0043] The 5G NR RAN 320 may be portions of a cellular network that may be deployed by a network carrier (e.g., Verizon, AT&T, T-Mobile, etc. ) . The RAN 320 may include cells or base stations that are configured to send and receive traffic from UEs that are equipped with the appropriate cellular chip set. In this example, the 5G NR RAN 320 includes the gNB 320A and the gNB 320B. However, reference to a gNB is merely provided for illustrative purposes, any appropriate base station or cell may be deployed (e.g., Node Bs, eNodeBs, HeNBs, eNBs, gNBs, gNodeBs, macrocells, microcells, small cells, femtocells, etc. ) .
[0044] Any association procedure may be performed for the UE 310 to connect to the 5G NR RAN 320. For example, as discussed above, the 5G NR RAN 320 may be associated with a particular network carrier where the UE 310 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 320, the UE 310 may transmit the corresponding credential information to associate with the 5G NR RAN 320. More specifically, the UE 310 may associate with a specific cell (e.g., gNB 320A) .
[0045] The network arrangement 300 also includes a cellular core network 330, the Internet 340, an IP Multimedia Subsystem (IMS) 350, and a network services backbone 360. The cellular core network 330 manages the traffic that flows between the cellular network and the Internet 340. The IMS 350 may be generally described as an architecture for delivering multimedia services to the UE 310 using the IP protocol. The IMS 350 may communicate with the cellular core network 330 and the Internet 340 to provide the multimedia services to the UE 310. The network services backbone 360 is in communication either directly or indirectly with the Internet 340 and the cellular core network 330. The network services backbone 360 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 310 in communication with the various networks.
[0046] Fig. 4 shows an example UE 310 according to various example embodiments. The UE 310 will be described with regard to the network arrangement 300 of Fig. 3. The UE 310 may represent any electronic device and may include a processor 405, a memory arrangement 410, a display device 415, an input / output (I / O) device 420, a transceiver 425, and other components 430. The other components 430 may include, for example, an audio input device, an audio output device, a battery that provides a limited power supply, a data acquisition device, ports to electrically connect the UE 310 to other electronic devices, sensors to detect conditions of the UE 310, etc.
[0047] The processor 405 may be configured to execute a plurality of engines for the UE 310. For example, the engines may include a FBS engine 435 for performing operations for activating and deactivating a FBS mode for the UE, as described in detail above.
[0048] The above referenced engine being an application (e.g., a program) executed by the processor 405 is only an example. The functionality associated with the engines may also be represented as a separate incorporated component of the UE 310 or may be a modular component coupled to the UE 310, 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 engines may also be embodied as one application or separate applications. In addition, in some UEs, the functionality described for the processor 405 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.
[0049] The memory arrangement 410 may be a hardware component configured to store data related to operations performed by the UE 310. The display device 415 may be a hardware component configured to show data to a user while the I / O device 420 may be a hardware component that enables the user to enter inputs. The display device 415 and the I / O device 420 may be separate components or integrated together such as a touchscreen.
[0050] The transceiver 425 may be a hardware component configured to establish a connection with the 5G NR-RAN 320, an LTE-RAN (not pictured) , a legacy RAN (not pictured) , a WLAN (not pictured) , etc. Accordingly, the transceiver 425 may operate on a variety of different frequencies or channels (e.g., set of consecutive frequencies) . The transceiver 425 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 405 may be operably coupled to the transceiver 425 and configured to receive from and / or transmit signals to the transceiver 425. The processor 405 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.
[0051] Fig. 5 shows an example base station 500 according to various example embodiments. The base station 500 may represent the gNB 320A, the gNB 320B or any other access node through which the UE 310 may establish a connection and manage network operations.
[0052] The base station 500 may include a processor 505, a memory arrangement 510, an input / output (I / O) device 515, a transceiver 520, and other components 525. The other components 525 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 500 to other electronic devices and / or power sources, etc.
[0053] The processor 505 may be configured to execute a plurality of engines for the UE 310. For example, the engines may include an FBS engine 530 for performing operations related to configurating and activating an NES mode in which the base station 500 is to turn off and / or configuring a UE with a serving cell in SSB-less operation, as described in detail above.
[0054] The memory arrangement 510 may be a hardware component configured to store data related to operations performed by the base station 500. The I / O device 515 may be a hardware component or ports that enable a user to interact with the base station 500.
[0055] The transceiver 520 may be a hardware component configured to exchange data with the UE 310 and any other UE in the network arrangement 300. The transceiver 520 may operate on a variety of different frequencies or channels (e.g., set of consecutive frequencies) . The transceiver 520 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 505 may be operably coupled to the transceiver 520 and configured to receive from and / or transmit signals to the transceiver 520. The processor 505 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.
[0056] Examples
[0057] In a first example, a method, comprising generating, for transmission to a serving cell, an indication of a level of need for power saving, processing, based on signaling from the serving cell, a configuration for conditional activation and deactivation of a fast beam sweeping (FBS) mode, the configuration including one or more conditions for activating the FBS mode and a timer for deactivating the FBS mode, when the one or more conditions are met, activating the FBS mode by activating multiple antenna panels enabling simultaneous downlink reception by multiple receive (Rx) chains and start the timer and deactivating the FBS mode by deactivating an antenna panel upon expiry of the timer.
[0058] In a second example, the method of the first example, further comprising generating, for transmission to the serving cell, a UE capability message comprising an FBS capability.
[0059] In a third example, the method of the first example, wherein the indication of the level of need for power saving is transmitted by uplink radio resource control (RRC) signaling, uplink medium access control (MAC) control element (MAC-CE) , or uplink control information (UCI) .
[0060] In a fourth example, the method of the first example, further comprising determining the level of need for power saving based on a determination of battery state or thermal state.
[0061] In a fifth example, the method of the first example, wherein the level of need for power saving is indicated by a value selected from a range of predefined values.
[0062] In a sixth example, the method of the first example, wherein the one or more conditions for activating the FBS mode are based on a current mobility state, a current location, or a current quality of service (QoS) requirement for data service.
[0063] In a seventh example, the method of the first example, further comprising assessing mobility evaluation criteria and, when a high mobility state is detected, activating the FBS mode.
[0064] In an eighth example, the method of the seventh example, wherein the mobility evaluation criteria are defined in specification or left to UE implementation.
[0065] In a ninth example, the method of the sixth example, further comprising assessing location-based evaluation criteria, and, when a cell edge state is detected, activating the FBS mode.
[0066] In a tenth example, the method of the ninth example, wherein the location-based evaluation criteria comprise serving cell quality criteria defined in specification or serving cell quality criteria left to UE implementation.
[0067] In an eleventh example, the method of the sixth example, further comprising assessing QoS-based evaluation criteria and, when a QoS condition is detected, activating the FBS mode.
[0068] In a twelfth example, the method of the eleventh example, wherein the QoS-based evaluation criteria are based on a current type of data service.
[0069] In a thirteenth example, the method of the first example, wherein a value of the timer for deactivating the FBS mode is configured by the serving cell based on the level of need for power saving.
[0070] In a fourteenth example, the method of the thirteenth example, wherein a mapping between the value of the timer and the level of need for power saving is hard-coded in standards.
[0071] In a fifteenth example, the method of the thirteenth example, wherein the value of the timer up to network implementation.
[0072] In a sixteenth example, the method of the first example, further comprising, after activating the FBS mode, continue monitoring the one or more conditions and, when the one or more conditions are no longer met, deactivating the FBS mode.
[0073] In a seventeenth example, the method of the first example, further comprising, after deactivating the FBS mode, reassessing the level of need for power savings and generating, for transmission to the serving cell, an updated indication of the level of need for power saving.
[0074] In an eighteenth example, the method of the first example, wherein the configuration further includes a prohibit timer, the method further comprising, when the FBS mode is deactivated, starting the prohibit timer and avoiding reactivating the FBS mode until expiry of the prohibit timer.
[0075] In a nineteenth example, a processor configured to perform any of the methods of the first through eighteenth examples.
[0076] In a twentieth example, a user equipment (UE) configured to perform any of the methods of the first through eighteenth examples.
[0077] 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.
[0078] 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.
[0079] 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.
[0080] 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 serving cell, an indication of a level of need for power saving;process, based on signaling from the serving cell, a configuration for conditional activation and deactivation of a fast beam sweeping (FBS) mode, the configuration including one or more conditions for activating the FBS mode and a timer for deactivating the FBS mode;when the one or more conditions are met, activate the FBS mode by activating multiple antenna panels enabling simultaneous downlink reception by multiple receive (Rx) chains and start the timer; anddeactivate the FBS mode by deactivating an antenna panel upon expiry of the timer.2.The apparatus of claim 1, the processing circuitry further configured to:generate, for transmission to the serving cell, a UE capability message comprising an FBS capability.3.The apparatus of claim 1, wherein the indication of the level of need for power saving is transmitted by uplink radio resource control (RRC) signaling, uplink medium access control (MAC) control element (MAC-CE) , or uplink control information (UCI) .4.The apparatus of claim 1, the processing circuitry further configured to:determine the level of need for power saving based on a determination of battery state or thermal state.5.The apparatus of claim 1, wherein the level of need for power saving is indicated by a value selected from a range of predefined values.6.The apparatus of claim 1, wherein the one or more conditions for activating the FBS mode are based on a current mobility state, a current location, or a current quality of service (QoS) requirement for data service.7.The apparatus of claim 6, the processing circuitry further configured to:assess mobility evaluation criteria; andwhen a high mobility state is detected, activate the FBS mode.8.The apparatus of claim 7, wherein the mobility evaluation criteria are defined in specification or left to UE implementation.9.The apparatus of claim 6, the processing circuitry further configured to:assess location-based evaluation criteria; andwhen a cell edge state is detected, activate the FBS mode.10.The apparatus of claim 9, wherein the location-based evaluation criteria comprise serving cell quality criteria defined in specification or serving cell quality criteria left to UE implementation.11.The apparatus of claim 6, the processing circuitry further configured to:assess QoS-based evaluation criteria; andwhen a QoS condition is detected, activate the FBS mode.12.The apparatus of claim 11, wherein the QoS-based evaluation criteria are based on a current type of data service.13.The apparatus of claim 1, wherein a value of the timer for deactivating the FBS mode is configured by the serving cell based on the level of need for power saving.14.The apparatus of claim 13, wherein a mapping between the value of the timer and the level of need for power saving is hard-coded in standards.15.The apparatus of claim 13, wherein the value of the timer up to network implementation.16.The apparatus of claim 1, the processing circuitry further configured to:after activating the FBS mode, continue monitoring the one or more conditions; andwhen the one or more conditions are no longer met, deactivate the FBS mode.17.The apparatus of claim 1, the processing circuitry further configured to:after deactivating the FBS mode, reassess the level of need for power savings; andgenerate, for transmission to the serving cell, an updated indication of the level of need for power saving.18.The apparatus of claim 1, wherein the configuration further includes a prohibit timer, the processing circuitry further configured to:when the FBS mode is deactivated, start the prohibit timer; andavoid reactivating the FBS mode until expiry of the prohibit timer.19.A method, comprising:generating, for transmission to a serving cell, an indication of a level of need for power saving;processing, based on signaling from the serving cell, a configuration for conditional activation and deactivation of a fast beam sweeping (FBS) mode, the configuration including one or more conditions for activating the FBS mode and a timer for deactivating the FBS mode;when the one or more conditions are met, activating the FBS mode by activating multiple antenna panels enabling simultaneous downlink reception by multiple receive (Rx) chains and start the timer; anddeactivating the FBS mode by deactivating an antenna panel upon expiry of the timer.20.The method of claim 19, further comprising:generating, for transmission to the serving cell, a UE capability message comprising an FBS capability.
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