Radio resource management conditions for main radio capable of low-power wake-up functionality
Patent Information
- Application Number
- PCT/CN2025/085471
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-10-01
Smart Images

Figure CN2025085471_01102026_PF_FP_ABST
Abstract
Description
Radio Resource Management Conditions for Main Radio Capable of Low-Power Wake-Up FunctionalityBackground
[0001] A user equipment (UE) may be equipped with a main radio configured to enable communication with a cellular network. The UE may use a power saving mode where the UE turns off the main radio or at least discontinues a subset of the main radio’s data exchange processing functionality to conserve power. The UE may also be equipped with a low-power wake-up radio (LP-WUR) configured to wake-up the main radio from power saving mode in response to a wake-up signal transmitted by the network. In some scenarios, the main radio may be configured to mimic the functionality LP-WUR while saving power.Summary
[0002] Some example embodiments are related to an apparatus having memory coupled to processing circuitry, the processing circuitry configured to process, based on signaling received from a base station, configuration information comprising multiple signal to interference and noise ratio (SINR) thresholds, wherein each SINR threshold corresponds to a different radio configuration for a user equipment (UE) and determine a radio configuration for the UE based on at least the configuration information, wherein the radio configuration includes at least an operating state for a main radio of the UE.
[0003] Other example embodiments are related to a method for processing, based on signaling received from a base station, configuration information comprising multiple signal to interference and noise ratio (SINR) thresholds, wherein each SINR threshold corresponds to a different radio configuration for a user equipment (UE) and determining a radio configuration for the UE based on at least the configuration information, wherein the radio configuration includes at least an operating state for a main radio of the UE.Brief Description of the Drawings
[0004] Fig. 1 shows an example network arrangement according to various example embodiments.
[0005] Fig. 2 shows an example UE according to various example embodiments.
[0006] Fig. 3 shows an example base station according to various example embodiments.
[0007] Fig. 4 shows an example architecture of the main radio according to various example embodiments.
[0008] Fig. 5 shows an example method for using a main radio that is configured to mimic the functionality of low-power wake-up radio (LP-WUR) according to various example embodiments.
[0009] Fig. 6 shows an example of a coverage area for a cell according to various example embodiments.
[0010] Fig. 7 shows a table illustrating a mapping between signal to interference and noise ratio (SINR) thresholds and different radio configurations according to various example embodiments.Detailed Description
[0011] 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 introduce techniques to support the implementation of a main radio that is able to mimic the functionality of a low-power wake up radio (LP-WUR) .
[0012] The example 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 electronic component.
[0013] The example embodiments are described with regard to a main radio. Throughout this description, the term “main radio” may generally refer to a legacy radio of the UE configured to enable communication with a cellular network (e.g., 6G, 5G, LTE, etc. ) . To provide some non-limiting examples, the main radio may perform operations for radio resource management (RRM) , data reception and data transmission. Any reference to the term main radio is merely provided for illustrative purposes, different entities may refer to a similar concept by different names.
[0014] The example embodiments are also described with regard to a low-power wake-up radio (LP-WUR) . Throughout this description, the term “LP-WUR” may generally refer to a radio of the UE configured to receive a wake-up signal that may trigger the main radio to wake up from a power-saving mode. Throughout this description, the wake-up signal may be referred to as a “LP-WUS. ” However, the LP-WUR is not limited to the reception and decoding of LP-WUS. To provide some non-limiting examples, the LP-WUR may perform synchronization based on a low-power synchronization signal (LP-SS) and measure reference signal receive power (RSRP) . The LP-WUR may be based on on-off keying (OOK) , orthogonal frequency-division multiplexing (OFDM) or any other appropriate type of modulation scheme. Accordingly, compared to the main radio, the LP-WUR is a low-power low-complexity radio that supports a limited functionality. Any reference to the terms “LP-WUR, ” “LP-WUS” and “LP-SS” are merely provided for illustrative purposes, different entities may refer to similar concepts by different names.
[0015] The UE may use different power saving modes (e.g., sleep mode, low-power modes, etc. ) . For example, the UE may enter a radio resource control (RRC) idle mode and refrain from exchanging signals with the network. In another example, the UE may enter RRC inactive mode and reduce communication. In other examples, the UE may implement a power saving mode in RRC connected mode such as connected discontinuous reception (C-DRX) . In these examples, the UE may turn off the main radio or at least discontinue a subset of the main radio’s data exchange processing functionality to conserve power. Accordingly, throughout this description, reference to a “power saving mode” may refer to operation of the main radio of the UE.
[0016] Fig. 1 shows an example network arrangement 100 according to various example embodiments. The example network arrangement 100 includes a UE 110. The UE 110 may be any type of electronic component that is configured to communicate via a network, e.g., mobile phones, tablet computers, desktop computers, smartphones, phablets, embedded devices, wearables, Internet of Things (IoT) devices, etc. An actual network arrangement may include any number of UEs being used by any number of users. Thus, the example of a single UE 110 is merely provided for illustrative purposes.
[0017] The UE 110 may be configured to communicate with one or more networks. In the example of the network arrangement 100, the network with which the UE 110 may wirelessly communicate is a Fifth Generation (5G) New Radio (NR) radio access network (RAN) 120. However, the UE 110 may also communicate with other types of networks (e.g., sixth generation (6G) RAN, 5G cloud RAN, a next generation RAN (NG-RAN) , a long-term evolution (LTE) RAN, a legacy cellular network, a wireless local area network (WLAN) , etc. ) and the UE 110 may also communicate with networks over a wired connection. With regard to the example embodiments, the UE 110 may establish a connection with the 5G NR RAN 120. Therefore, the UE 110 may have at least a 5G chipset to communicate with the 5G NR RAN 120. The UE 110 may also have other chipsets to communicate with other types of RANs, e.g., 6G chipset, LTE chipset, ISM chipset, etc.
[0018] The 5G NR RAN 120 may be a portion of a cellular network that may be deployed by a network carrier (e.g., Verizon, AT&T, T-Mobile, etc. ) . The 5G NR RAN 120 may include base stations or access nodes (Node Bs, eNodeBs, HeNBs, eNBS, gNBs, gNodeBs, macrocells, microcells, small cells, femtocells, etc. ) that are configured to send and receive traffic from UEs that are equipped with the appropriate cellular chip set. As used herein, the term “base station, ” “access node, ” “access point, ” or the like may describe equipment that provides the radio baseband functions for data and / or voice connectivity between a network and one or more users. These access nodes may be referred to as BS, gNBs, RAN nodes, eNBs, NodeBs, RSUs, TRxPs or TRPs, and so forth, and may comprise ground stations (e.g., terrestrial access points) or satellite stations providing coverage within a geographic area (e.g., a cell) . In fact, in some embodiments, a UE, such as UE 110 described herein, may function as an access point. In one example, the 5G NR RAN 120 includes the base station 120A that may be any appropriate base station or cell deployed in the 5G NR RAN 120 (e.g., Node Bs, eNodeBs, HeNBs, eNBs, gNBs, gNodeBs, macrocells, microcells, small cells, femtocells, etc. ) .
[0019] Any association procedure may be performed for the UE 110 to connect to the 5G NR RAN 120. For example, as discussed above, the 5G NR RAN 120 may be associated with a particular network carrier where the UE 110 and / or the user thereof has a contract and credential information (e.g., stored on a SIM card) . Upon detecting the presence of the 5G NR RAN 120, the UE 110 may transmit the corresponding credential information to associate with the 5G NR RAN 120. More specifically, the UE 110 may associate with a specific cell (e.g., the base station 120A) .
[0020] The network arrangement 100 also includes a cellular core network 130, the Internet 140, an IP Multimedia Subsystem (IMS) 150, and a network services backbone 160. The cellular core network 130 manages the traffic that flows between the cellular network and the Internet 140. The IMS 150 may be generally described as an architecture for delivering multimedia services to the UE 110 using the IP protocol. The IMS 150 may communicate with the cellular core network 130 and the Internet 140 to provide the multimedia services to the UE 110. The network services backbone 160 is in communication either directly or indirectly with the Internet 140 and the cellular core network 130. The network services backbone 160 may be generally described as a set of components (e.g., servers, network storage arrangements, etc. ) that implement a suite of services that may be used to extend the functionalities of the UE 110 in communication with the various networks.
[0021] Fig. 2 shows an example UE 110 according to various example embodiments. The UE 110 will be described with regard to the network arrangement 100 of Fig. 1. The UE 110 may represent any electronic device and may include a processor 205, a memory arrangement 210, a display device 215, an input / output (I / O) device 220, a main radio 225, a LP-WUR 226, and other components 230. The other components 230 may include, for example, an audio input device, an audio output device, a power supply, antennas, a data acquisition device, ports to electrically connect the UE 110 to other electronic devices, etc.
[0022] The memory arrangement 210 may be a hardware component configured to store data related to operations performed by the UE 110. The display device 215 may be a hardware component configured to show data to a user while the I / O device 220 may be a hardware component that enables the user to enter inputs. The display device 215 and the I / O device 220 may be separate components or integrated together such as a touchscreen.
[0023] The processor 205 may be configured to execute a plurality of engines for the UE 110. For example, the engines may include a radio management engine 235. The radio management engine 235 may perform various operations related to the example techniques introduced herein such as, but not limited to, receiving configuration information, generating capability information and determining whether to use the main radio 225, the LP-WUR 226, the main radio 225 as a LP-WUR or a combination thereof.
[0024] The above referenced engine 235 being an application (e.g., programs) executed by the processor 205 is only an example. The functionality associated with the engine may also be represented as a separate incorporated component of the UE 110 or may be a modular component coupled to the UE 110, e.g., an integrated circuit with or without firmware. For example, the integrated circuit may include input circuitry to receive signals and processing circuitry to process the signals and other information. The engines may also be embodied as one application or separate applications. In addition, in some UEs, the functionality described for the processor 205 is split among two or more processors such as a baseband processor and an applications processor. The example embodiments may be implemented in any of these or other configurations of a UE.
[0025] The main radio 225 may be a hardware component (e.g., circuitry, cellular transceiver, etc. ) configured to communicate with one or more networks (e.g., 5G NR RAN 120, 6G RAN, LTE-RAN, a legacy RAN, etc. ) . For example, the main radio may be legacy radio configured to perform operations such as, but not limited to, RRM, data reception and data transmission. In some examples, the main radio 225 may be configured to mimic the functionality of a LP-WUR.
[0026] The main radio 225 may include or be communicatively coupled to a cellular transceiver. Accordingly, the main radio 225 may operate on a variety of different frequencies or channels (e.g., set of consecutive frequencies) . The main radio 225 may include circuitry configured to transmit and / or receive signals (e.g., control signals, data signals) . Such signals may be encoded with information implementing any one of the methods described herein. The processor 205 may be operably coupled to the main radio 225 and configured to receive from and / or transmit signals to the main radio 225. The processor 205 may be configured to encode, decode and / or process signals (e.g., signaling from a base station of a network) for implementing any one of the methods described herein.
[0027] The LP-WUR 226 may also be a hardware component configured to communicate with one or more networks. In addition, the LP-WUR 226 may be configured to wake up the main radio 225 in response to a LP-WUS. Thus, the LP-WUR 226 may be communicatively coupled to the main radio 225 and / or processor 205 to trigger the main radio 225 to wake-up from power saving mode. In some embodiments, the LP-WUR 226 and / or main radio 225 may be hard-coded or integrated with the processor 205. It should also be understood that the UE 110 may include any number of main radios and any number of LP-WURs. Thus, the example of a single main radio 225 and corresponding LP-WUR 226 is merely provided for illustrative purposes.
[0028] The LP-WUR radio 226 may include or be communicatively coupled to a cellular transceiver. Accordingly, the LP-WUR radio 226 may operate on a variety of different frequencies or channels (e.g., set of consecutive frequencies) . The LP-WUR radio 226 may include circuitry configured to transmit and / or receive signals. The processor 205 may be operably coupled to the LP-WUR radio 226 and configured to receive from and / or transmit signals to the LP-WUR radio 226. The processor 205 may be configured to encode, decode and / or process signals (e.g., signaling from a base station of a network) for implementing any one of the methods described herein.
[0029] The example embodiments introduce techniques to support the implementation of a main radio that is configured to mimic the functionality of a LP-WUR while still saving power. Since the main radio may perform the operations of the LP-WUR, it is possible for the UE 110 to only be equipped with a main radio. Accordingly, the example of the UE 110 being equipped with the main radio 225 and the LP-WUR 226 as two separate physical components is merely provided for illustrative purposes. Examples of how the architecture of the main radio 225 may be configured to operate as a LP-WUR will be described below with regard to Fig. 4.
[0030] Fig. 3 shows an example base station 300 according to various example embodiments. The base station 300 may represent the base station 120A or any other access node through which the UE 110 may establish a connection and manage network operations.
[0031] The base station 300 may include a processor 305, a memory arrangement 310, an input / output (I / O) device 315, a transceiver 320, and other components 325. The other components 325 may include, for example, an audio input device, an audio output device, a battery, a data acquisition device, ports to electrically connect the base station 300 to other electronic devices and / or power sources, etc.
[0032] The processor 305 may be configured to execute a plurality of engines. For example, the engines may include a radio management engine 330. The radio management engine 330 may perform various operations related to the example techniques introduced herein such as, but not limited to, receiving UE capability information related to main radio and LP-WUR operation at the UE 110 and generating configuration information related to main radio and LP-WUR operation at the UE 110.
[0033] The above referenced engine 330 being an application (e.g., programs) executed by the processor 205 is only an example. The functionality associated with the engine may also be represented as a separate incorporated component of the base station 300 or may be a modular component coupled to the base station 300, e.g., an integrated circuit with or without firmware. For example, the integrated circuit may include input circuitry to receive signals and processing circuitry to process the signals and other information. The engine may also be embodied as one application or separate applications. In addition, in some base stations, the functionality described for the processor 305 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 base station.
[0034] The memory arrangement 310 may be a hardware component configured to store data related to operations performed by the base station 300. The I / O device 315 may be a hardware component or ports that enable a user to interact with the base station 300.
[0035] The transceiver 320 may be a hardware component configured to exchange data with the UE 110 and any other UE in the network arrangement 100. The transceiver 320 may operate on a variety of different frequencies or channels (e.g., set of consecutive frequencies) . Therefore, the transceiver 320 may include one or more components (e.g., radios) to enable the data exchange with the various networks and UEs. The transceiver 320 includes circuitry configured to transmit and / or receive signals (e.g., control signals, data signals) . Such signals may be encoded with information implementing any one of the methods described herein. The processor 305 may be operably coupled to the transceiver 320 and configured to receive from and / or transmit signals to the transceiver 320. The processor 305 may be configured to encode, decode and / or process signals (e.g., signaling from a UE) for implementing any one of the methods described herein.
[0036] As indicated above, the example embodiments relate using a main radio to perform operations typically performed by LP-WUR. When the UE 110 is equipped with a main radio and a LP-WUR, there may be an increase in the noise figure (NF) of the LP-WUR versus the main radio. In this context, evaluating LP-WUS / LP-SS can include consideration of signal to interference and noise ratio (SINR) thresholds . The values for SINR are driven by an increased NF in the LP-WUR. In some example embodiments, for an OFDM LP-WUR, +3 decibels (dB) NF over the main radio may be considered and for an on off keying (OOK) LP-WUR +3 dB NF over OFDM LP-WUR and +6 dB over main radio may be considered. However, these are only examples and other values of NF may be used to implement the example embodiments.
[0037] According to some aspects, the UE 110 may or may not implement a LP-WUR. Instead, a main radio may be reconfigured to mimic the functionality of the LP-WUR.
[0038] Fig. 4 shows an example architecture of the main radio 225 according to various example embodiments. The main radio 225 may include a radio frequency filter (RF) 410, an external low-noise amplifier (LNA) 412, a mixer 414, an internal LNA 416, an analog to digital converter (ADC) 418. The main radio 225 may also include components that are not pictured in Fig. 4 such as, but not limited to, antennas, a matching network unit, a baseband filter and baseband processing circuitry. Any reference to the main radio 225 being equipped with any particular component is not intended to limit the example embodiments in any way. The example architecture described in Fig. 4 is provided to illustrate how the architecture of the main radio 225 may be configured to mimic the functionality of a LP-WUR but the example embodiments are not limited to this type of architecture. The example embodiments may be implemented in any of these or other configurations of a main radio.
[0039] The main radio 225 may enable the UE 110 to gradually increase the NF while gradually reducing power consumption. In this example, the main radio 225 may modify the operation of the external LNA 412 and the internal LNA 416 to achieve the functionality of a LP-WUR. However, reference to the terms external LNA and internal LNA are merely provided for illustrative purposes. Different entities may refer to similar components by a different name. For instance, in some examples, the external LNA may be referred to an RF LNA and the internal LNA may be referred to as a baseband LNA.
[0040] The main radio 225 may scan certain frequencies and process the signals received over the air. The processing may include using the RF filter 410 to ensure that a specified frequency range is processed, using the mixer 414 to combine and / or modulate signals and the ADC 418 to convert analog signals to digital for baseband processing. However, an actual main radio architecture may include any number of RF filters, mixers and ADC. Therefore, the example of a single RF filter, a single mixer and a single ADC is merely provided for illustrated purposes. The main radio may be equipped with any appropriate number of RF filters, mixers and ADCs.
[0041] A LNA is typically used to amplify the power of an input signal while minimizing noise. In this example, there is LNA bypass 413 around the external LNA 412 and an LNA bypass 417 around the internal LNA 416. The LNA bypasses 413, 417 allow signals to pass through the components RF chain without being processed by the corresponding LNAs 412 and 216. Accordingly, in some scenarios, the LNAs 412 and 216 may be powered off to save power. However, bypassing the LNAs 412 and 216 allows for more noise.
[0042] The components of an LNA may be adjusted to save power but the signal output of the LNA may have more noise. Throughout this description, the term “LNA bias” may generally refer to a power saving mode specific to an LNA where components and / or parameters of the LNA are adjusted to reduce its power draw. The power saving benefits may come at the expense of additional noise. Accordingly, the main radio 225 may use an LNA bias setting and / or bypass an LNA to mimic the power saving benefits of an LP-WUR.
[0043] In one example, a high LNA bias setting may be applied to at least one of the external LNA 412 and the internal LNA 416. In this example, the LNA produces a relatively low NF and thus, the main radio 225 may achieve better performance than a LP-WUR. However, the power consumption of the LNA may be the same or reduced compared to normal main radio operation.
[0044] In another example, a low LNA bias setting may be applied to least one of the external LNA 412 and the internal LNA 416. In this example, the LNA produces a higher NF than the high LNA bias setting but consumes less power.
[0045] In a further example, at least one of the external LNA 412 and the internal LNA 416 may be bypassed (e.g., LNA bias setting is set to off) . In this example, the LNA is shut off and thus, the power consumption of the LNA is approximately zero. However, the power saving benefits come with a higher NF because the LNA is not processing the signal as it goes through the RF chain. Bypassing an LNA may be used in scenarios where power consumption is prioritized over NF such as the UE 110 being deployed close to the center of a cell. The above examples of LNA bias settings are not intended to limit the example embodiments. The main radio 225 may be configured with any appropriate number of LNA bias settings.
[0046] Fig. 5 shows an example method 500 for using a main radio that is configured to mimic the functionality of LP-WUR according to various example embodiments. The method 500 will be described from the perspective of the UE 110 of Fig. 2.
[0047] In 510, the UE 110 receives configuration information for main radio and / or LP-WUR operation. In some examples, the configuration information may be provided in a system information block (SIB) .
[0048] The configuration information may indicates when the UE 110 is to use the main radio 225 with its normal functionality, when the UE 110 is to use the LP-WUR 226 with its normal functionality and when the UE 110 is to use the main radio 225 to mimic the functionality of a LP-WUR. For example, the SIB may include one or more SINR thresholds that dictate when the UE 110 is to configure the main radio 225 to mimic the functionality of a LP-WUR. In this example, the SIB may be a SIB2, a SIB3, a SIB4 or any other appropriate type of SIB. However, the example embodiments do not require that this configuration information be provided in a SIB. The UE 110 may be provided with this type of configuration information in any appropriate manner.
[0049] In 520, the UE 110 collects measurement data. For example, the UE 110 may collect measurement data and derive parameters such as, but not limited to, SINR, RSRP and NF. As will be described in more detail below, the UE 110 may compare the measurement data to thresholds provided in the SIB to determine when to use the main radio 225 and / or LP-WUR 226.
[0050] Fig. 6 shows an example 600 of a coverage area for a cell according to various example embodiments. The example 600 is provided to illustrate conditions under which the UE 110 may use its main radio and / or LP-WUR. The example 600 is not intended to limit the example embodiments in any way and any reference to the UE 110 being configured to use the main radio and / or LP-WUR under specific conditions is provided as an example to illustrate that the UE 110 may use different radio under different conditions.
[0051] The example 600 includes the gNB 120A with a coverage area 610. The coverage area 610 encompasses areas 612-618 that each represent a different distance from the cell center. When the UE 110 is deployed in area 618, the UE 110 is at the cell edge and the edge of area 618 may coincide with cell selection (e.g., S criterion) . Here, the UE 110 main radio 225 is powered on and configured to perform both serving cell and neighbor cell measurements while the LP-WUR 226 is powered off.
[0052] The transition from area 618 to area 616 may coincide with a not-at-cell-edge threshold for measurement relaxation. When the UE 110 is deployed in area 616, the UE 110 is configured to use its main radio 225 while the LP-WUR radio 226 is powered off. However, since the UE 110 is closer to the cell center, the RF conditions are likely better than the RF conditions in area 618. Accordingly, the UE 110 may use a relaxed neighbor cell measurement configuration to save power.
[0053] The transition from area 616 to 614 may coincide with a LP-WUS monitoring threshold. When the UE 110 is deployed in area 614, the UE 110 use both its main radio 225 and LP-WUR 226. However, since the UE 110 is closer to the cell center, the RF conditions are likely better than the RF conditions in area 616. Accordingly, the UE 110 may use a power saving mode for the main radio 225 and use the LP-WUR 226 to monitor for LP-WUS.
[0054] The transition from area 614 to 612 may coincide with a threshold for offloading at least a subset of main radio operations to the LP-WUR 226. When the UE 110 is deployed in area 612, the UE 110 may be near the cell center and there are no neighbor cell measurements to perform. Here, the main radio 225 may be powered off and the LP-WUR 226 may be powered on. The example embodiments may enable the UE 110 to use its main radio 225 to mimic the functionality of a LP-WUR instead of using its LP-WUR 226. Accordingly, in the examples provides above, the UE 110 may use its main radio 225 to mimic the functionality of the LP-WUR 226 instead of powering on the LP-WUR 226.
[0055] Returning to the method 500, in 530, the UE 110 selects a radio configuration. To provide a non-limiting example, the UE 110 may compare SINR to one or more SINRs thresholds provided in the SIB. This comparison may provide the basis for the UE 110 to decide whether to use its main radio 225 and / or LP-WUR 226. For instance, the UE 110 may shut off its main radio 225, use its main radio 225 with a main radio configuration, use its main radio 225 with a LP-WUR configuration, shut off its LP-WUR 226 and / or use its LP-WUR 226 with a LP-WUR configuration.
[0056] Throughout this description, reference to the term “radio configuration” may refer to how the UE 110 is configured to use its main radio 225 and / or LP-WUR 226. In some embodiments, the radio configuration may include at least an operating state of the main radio. The operating states for the main radio may include, but are not limited to, off, legacy main radio operation, LP-WUR operation, OFDM LP-WUR operation and OOK LP-WUR operation. In some embodiments, the terms “LP-WUR operation” and “adjusted NF main radio operation” may be used interchangeably to generally refer to a main radio that has adjusted its components and / or parameters (e.g., LNA bias, LNA bypass, etc. ) to mimic the functionality of a LP-WUR.
[0057] In some examples, the SINR thresholds may correspond to different modulation schemes. For example, a first threshold may correspond to using the main radio 225 to mimic an OFDM LP-WUR and a second threshold may correspond to using the LP-WUR with an OOK configuration.
[0058] In some embodiments, the UE 110 may also consider thresholds corresponding to different offloading and / or relaxation states. To provide an example, consider the scenario illustrated in the example 600 of Fig. 6. The configuration information provided in 510 may include one or more thresholds based on RSRP, SINR, NF and / or any other appropriate parameter. The UE 110 may collect measurement data and when a first threshold is satisfied (e.g., area 612) , the UE 110 may offload main radio operations to an actual LP-WUR or the main radio may perform main radio operations while configured to mimic the functionality of a LP-WUR. When a second threshold is satisfied (e.g., area 614) , the UE 110 may be configured to relax main radio operations with respect to serving cell and / or neighbor cell measurements and to use an actual LP-WUR or the main radio as a LP-WUR. When a third threshold is satisfied (e.g., area 616) , the UE 110 may power off its LP-WUR or not use its main radio as a LP-WUR. However, the UE 110 may be configured to relax main radio operations with respect to neighbor cell measurement. When a fourth threshold is satisfied (e.g., area 618) , the UE 110 may power off its LP-WUR or not use its main radio as a LP-WUR.
[0059] Fig. 7 shows a table 700 illustrating a mapping between SINR thresholds and different radio configurations according to various example embodiments. The table 700 includes three SINRs thresholds 710-730. However, reference to three SINR thresholds is merely provided for illustrative purposes. The example embodiments may use appropriate number of thresholds based on different parameters in addition to or instead of SINR.
[0060] The table 700 includes examples 750-755. Each of the examples 750-755 show different UE 110 behavior with respect the SINR thresholds. However, these examples are not intended to limit the example embodiments in any way and are merely provided for illustrative purposes to demonstrate the different type of UE behavior that may be enabled by the techniques introduced herein.
[0061] The SINR threshold 710 is associated with legacy operation of the main radio 225. That is, when SINR threshold 710 is satisfied the UE 110 configures its main radio 225 for functionality normally associated with a main radio, e.g., RRM, data reception, data transmission, etc. The SINR threshold 720 represents a SINR threshold that is greater than threshold 710 and the SINR threshold 730 represents a SINR threshold that is greater than threshold 720.
[0062] In example 750, when the SINR threshold 720 is satisfied, the UE 110 may use an OFDM configuration for the LP-WUR 226. In this example, the UE 110 does not use its main radio 225 to mimic the functionality of LP-WUR and the SINR threshold 730 is not configured.
[0063] In example 751, when the SINR threshold 720 is satisfied, the UE 110 may use its main radio 225 as an OFDM LP-WUR. In this example, the UE 110 may not be equipped with a separate dedicated LP-WUR 226 or the UE 110 may be in an operating mode where the LP-WUR 226 is not to be powered on. In addition, the SINR threshold 730 is not configured.
[0064] In example 752, when the SINR threshold 730 is satisfied, the UE 110 may use an OOK configuration for the LP-WUR 226. In this example, the UE 110 does not use its main radio 225 to mimic the functionality of LP-WUR and the SINR threshold 720 is not configured.
[0065] In example 753, when the SINR threshold 730 is satisfied, the UE 110 may use its main radio 225 as an OOK LP-WUR. In this example, the UE 110 may not be equipped with a separate dedicated LP-WUR 226 or the UE 110 may be in an operating mode where the LP-WUR 226 is not to be powered on. In addition, the SINR threshold 720 is not configured.
[0066] In example 754, when the SINR threshold 720 is satisfied, the UE 110 may use its main radio 225 as an OFDM LP-WUR with a first configuration. When the SINR threshold 730 is satisfied, the UE 110 may use its main radio 225 as an OFDM LP-WUR with a second configuration. The different between the first and second configuration may be the NF and / or power consumption. To provide a non-limiting example, the first configuration may use a low LNA bias setting and the second configuration may correspond to a bypassed LNA.
[0067] In example 755, when the SINR threshold is satisfied, the UE 110 may use its main radio 225 as an OFDM LP-WUR. When the SINR threshold 730 is satisfied, the UE 110 may use its LP-WUR 226 with an OOK configuration.
[0068] Returning to the method 500, in 540, the UE 110 operates using the radio configuration selected in 530. As indicated above, the radio configuration may indicate whether the UE 110 is to use its main radio as a LP-WUR. The radio configuration may also include a modulation scheme (e.g., OFDM, OOK, etc. ) , a relaxed configuration with respect to neighbor cell and / or serving cell measurements, offloading main radio operations to a LP-WUR or performing main radio operations when the main radio is configured to mimic the functionality of the LP-WUR.
[0069] In some examples, a LP-WUS may trigger a change in the radio configuration. For instance, the UE 110 may select a configuration where the UE 110 is to use its main radio as a LP-WUR. While operating its main radio as a LP-WUR, the UE 110 may receive a LP-WUS. Typically, the LP-WUS would trigger the LP-WUR to wake-up the main radio. However, in this context, the UE 110 may changes its radio configuration from a main radio that is configured to operate as a LP-WUR while still saving power to a main radio that is configured to operate as a main radio (e.g., data transmission, reception, etc. )
[0070] The example 500 ends after 540. However, in an actual deployment scenario, the UE 110 may continuously evaluate the RF conditions (or any other appropriate type of condition) to trigger a change to the radio configuration.
[0071] LP-WUR functionality may only be applicable to certain frequency bands. The UE 110 may indicate its main radio and LP-WUR capabilities to the network using UE capability information or in any other appropriate manner. To provide some examples, the UE 110 may provide capability information that indicates the UE 110 is supports operation of both a main radio and a LP-WUR. This capability information may further indicate a modulation scheme supported by the LP-WUR. In another example, the UE 110 may provide capability information that indicates the UE 110 supports operation of a main radio and a main radio that is capable of LP-WUR functionality. This capability information may further indicate a modulation scheme (e.g., OFDM, OOK, etc. ) supported by the main radio when operating as a LP-WUR. In a further example, the UE 110 may provide capability information that indicates the UE 110 supports operation of a main radio, a LP-WUR and a main radio that is capable of LP-WUR functionality. This capability information may further indicate one or more modulation schemes (e.g., OFDM, OOK, etc. ) supported by the LP-WUR and one or more modulation schemes supported by the main radio when operating as a LP-WUR.
[0072] The capability information may be provided per band, per band combination and / or per frequency range (e.g., frequency range 1 (FR1) , FR2, FR3) . The above capabilities may imply that the UE 110 is able to handle the different radio configurations described above.Examples
[0073] In a first example, a method, comprising processing, based on signaling received from a base station, configuration information comprising multiple signal to interference and noise ratio (SINR) thresholds, wherein each SINR threshold corresponds to a different radio configuration for a user equipment (UE) and determining a radio configuration for the UE based on at least the configuration information, wherein the radio configuration includes at least an operating state for a main radio of the UE.
[0074] In a second example, the method of the first example, wherein a first SINR threshold of the multiple SINR thresholds corresponds to a first radio configuration for the UE, wherein the first radio configuration includes configuring the main radio to perform low-power wake-up radio (LP-WUR) operations.
[0075] In a third example, the method of the first example, wherein a first SINR threshold of the multiple SINR thresholds corresponds to a first radio configuration for the UE, wherein the first radio configuration includes configuring the main radio to perform orthogonal frequency division multiplexing (OFDM) low-power wake-up radio (LP-WUR) operations.
[0076] In a fourth example, the method of the first example, wherein a first SINR threshold of the multiple SINR thresholds corresponds to a first radio configuration for the UE, wherein the first radio configuration includes configuring the main radio to perform on off keying (OOK) low-power wake-up radio (LP-WUR) operations.
[0077] In a fifth example, the method of the first example, wherein a first SINR threshold of the multiple SINR thresholds corresponds to a first radio configuration for the UE, wherein the first radio configuration includes configuring the main radio to perform orthogonal frequency division multiplexing (OFDM) low-power wake-up radio (LP-WUR) operations with a first noise figure (NF) , wherein a second SINR threshold of the multiple SINR thresholds corresponds to a second radio configuration for the UE, wherein the second radio configuration includes configuring the main radio to perform OFDM LP-WUR operations with a second NF, wherein the second NF is different than the first NF.
[0078] In a sixth example, the method of the first example, wherein a first SINR threshold of the multiple SINR thresholds corresponds to a first radio configuration for the UE, wherein the first radio configuration includes configuring the main radio to perform orthogonal frequency division multiplexing (OFDM) low-power wake-up radio (LP-WUR) , wherein a second SINR threshold of the multiple SINR thresholds corresponds to a second radio configuration for the UE, wherein the second radio configuration includes configuring a LP-WUR to perform on off keying (OOK) LP-WUR operations.
[0079] In a seventh example, the method of the first example, wherein a first SINR threshold corresponds to a first radio configuration that includes an orthogonal frequency division multiplexing (OFDM) modulation scheme and a second SINR threshold corresponds to a second radio configuration that includes an on off keying modulation scheme.
[0080] In an eighth example, the method of the first example, wherein a first SINR threshold corresponds to a first radio configuration that includes switching off the main radio and offloading main radio operations to a low-power wake-up radio (LP-WUR) .
[0081] In a ninth example, the method of the first example, wherein a first SINR threshold corresponds to a first radio configuration that includes a relaxed measurement configuration at the main radio for at least one of a serving cell or a neighbor cell.
[0082] In a tenth example, the method of the first example, wherein the configuration information comprising the multiple SINR thresholds is provided in a system information block (SIB) .
[0083] In an eleventh example, the method of the first example, further comprising generating, for transmission to the base station, capability information indicating that the UE is capable of using a main radio and a low-power wake-up radio (LP-WUR) .
[0084] In a twelfth example, the method of the eleventh example, wherein the capability information further comprises an indication of orthogonal frequency division multiplexing (OFDM) and on off keying (OOK) capable LP-WUR.
[0085] In a thirteenth example, the method of the eleventh example, wherein the capability information is per band.
[0086] In a fourteenth example, the method of the eleventh example, wherein the capability information is per band combination.
[0087] In a fifteenth example, the method of the eleventh example, wherein the capability information is per frequency range (FR) .
[0088] In a sixteenth example, the method of the first example, further comprising generating, for transmission to the base station, capability information indicating that the UE is capable of using a main radio for main radio operations and low-power wake-up radio (LP-WUR) operations.
[0089] In a seventeenth example, the method of the sixteenth example, wherein the capability information further comprises an indication of orthogonal frequency division multiplexing (OFDM) and on off keying (OOK) capable LP-WUR operations.
[0090] In an eighteenth example, the method of the sixteenth example, wherein the capability information is per band.
[0091] In a nineteenth example, the method of the sixteenth example, wherein the capability information is per band combination.
[0092] In a twentieth example, the method of the sixteenth example, wherein the capability information is per frequency range (FR) .
[0093] In a twenty first example, the method of the first example, further comprising generating, for transmission to the base station, capability information indicating that the UE is capable of using a main radio for main radio operations, using the main radio for low-power wake-up radio (LP-WUR) operations and using a LP-WUR for the LP-WUR operations.
[0094] In a twenty second example, the method of the twenty first example, wherein the capability information further comprises an indication of at least one of orthogonal frequency division multiplexing (OFDM) and on off keying (OOK) capable LP-WUR operations by the main radio and at least one of OFDM and OOK capable LP-WUR operations by the LP-WUR.
[0095] In a twenty third example, the method of the twenty first example, wherein the capability information is per band.
[0096] In a twenty fourth example, the method of the twenty first example, wherein the capability information is per band combination.
[0097] In a twenty fifth example, the method of the twenty first example, wherein the capability information is per frequency range (FR) .
[0098] In a twenty sixth example, a pro cessor configured to perform any of the methods of the first through twenty fifth examples.
[0099] In a twenty seventh example, a user equipment (UE) configured to perform any of the methods of the first through twenty fifth examples.
[0100] 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. In a further example, the example embodiments of the above-described method 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.
[0101] Although this application described various aspects each having different features in various combinations, those skilled in the art will understand that any of the features of one aspect may be combined with the features of the other aspects 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 aspects.
[0102] I t 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] 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 memory coupled to processing circuitry, the processing circuitry configured to:process, based on signaling received from a base station, configuration information comprising multiple signal to interference and noise ratio (SINR) thresholds, wherein each SINR threshold corresponds to a different radio configuration for a user equipment (UE) ; anddetermine a radio configuration for the UE based on at least the configuration information, wherein the radio configuration includes at least an operating state for a main radio of the UE.2.The apparatus of claim 1, wherein a first SINR threshold of the multiple SINR thresholds corresponds to a first radio configuration for the UE,wherein the first radio configuration includes configuring the main radio to perform low-power wake-up radio (LP-WUR) operations.3.The apparatus of claim 1, wherein a first SINR threshold of the multiple SINR thresholds corresponds to a first radio configuration for the UE,wherein the first radio configuration includes configuring the main radio to perform orthogonal frequency division multiplexing (OFDM) low-power wake-up radio (LP-WUR) operations.4.The apparatus of claim 1, wherein a first SINR threshold of the multiple SINR thresholds corresponds to a first radio configuration for the UE,wherein the first radio configuration includes configuring the main radio to perform on off keying (OOK) low-power wake-up radio (LP-WUR) operations.5.The apparatus of claim 1, wherein a first SINR threshold of the multiple SINR thresholds corresponds to a first radio configuration for the UE,wherein the first radio configuration includes configuring the main radio to perform orthogonal frequency division multiplexing (OFDM) low-power wake-up radio (LP-WUR) operations with a first noise figure (NF) ,wherein a second SINR threshold of the multiple SINR thresholds corresponds to a second radio configuration for the UE,wherein the second radio configuration includes configuring the main radio to perform OFDM LP-WUR operations with a second NF, wherein the second NF is different than the first NF.6.The apparatus of claim 1, wherein a first SINR threshold of the multiple SINR thresholds corresponds to a first radio configuration for the UE,wherein the first radio configuration includes configuring the main radio to perform orthogonal frequency division multiplexing (OFDM) low-power wake-up radio (LP-WUR) ,wherein a second SINR threshold of the multiple SINR thresholds corresponds to a second radio configuration for the UE,wherein the second radio configuration includes configuring a LP-WUR to perform on off keying (OOK) LP-WUR operations.7.The apparatus of claim 1, wherein a first SINR threshold corresponds to a first radio configuration that includes an orthogonal frequency division multiplexing (OFDM) modulation scheme and a second SINR threshold corresponds to a second radio configuration that includes an on off keying modulation scheme.8.The apparatus of claim 1, wherein a first SINR threshold corresponds to a first radio configuration that includes switching off the main radio and offloading main radio operations to a low-power wake-up radio (LP-WUR) .9.The apparatus of claim 1, wherein a first SINR threshold corresponds to a first radio configuration that includes a relaxed measurement configuration at the main radio for at least one of a serving cell or a neighbor cell.10.The apparatus of claim 1, wherein the configuration information comprising the multiple SINR thresholds is provided in a system information block (SIB) .11.The apparatus of claim 1, wherein the processing circuitry is further configured to:generate, for transmission to the base station, capability information indicating that the UE is capable of using a main radio and a low-power wake-up radio (LP-WUR) .12.The apparatus of claim 11, wherein the capability information further comprises an indication of orthogonal frequency division multiplexing (OFDM) and on off keying (OOK) capable LP-WUR.13.The apparatus of claim 11, wherein the capability information is per band.14.The apparatus of claim 11, wherein the capability information is per band combination.15.The apparatus of claim 11, wherein the capability information is per frequency range (FR) .16.The apparatus of claim 1, wherein the processing circuitry is further configured to:generate, for transmission to the base station, capability information indicating that the UE is capable of using a main radio for main radio operations and low-power wake-up radio (LP-WUR) operations.17.The apparatus of claim 16, wherein the capability information further comprises an indication of orthogonal frequency division multiplexing (OFDM) and on off keying (OOK) capable LP-WUR operations.18.The apparatus of claim 16, wherein the capability information is one of per band, per band combination or per frequency range (FR) .19.The apparatus of claim 1, wherein the processing circuitry is further configured to:generate, for transmission to the base station, capability information indicating that the UE is capable of using a main radio for main radio operations, using the main radio for low-power wake-up radio (LP-WUR) operations and using a LP-WUR for the LP-WUR operations.20.The apparatus of claim 19, wherein the capability information further comprises an indication of at least one of orthogonal frequency division multiplexing (OFDM) and on off keying (OOK) capable LP-WUR operations by the main radio and at least one of OFDM and OOK capable LP-WUR operations by the LP-WUR.