System and method for energy conservation

Abstract

Systems and methods for saving energy are provided. A wireless communication device may receive at least one signal from a wireless communication node. The wireless communication device may perform an operation based on the at least one signal.

Description

TECHNICAL FIELD

[0001] The present disclosure relates generally to wireless communication, including but not limited to systems and methods for energy saving in a communication system. BACKGROUND

[0002] The Third Generation Partnership Project (3GPP) standards organization is currently in the process of developing a new radio interface, named 5G New Radio (5G NR), and a next generation packet core network (NG-CN or NGC). The 5G NR will have three main components: a 5G Access Network (5G-AN), a 5G Core Network (5GC), and a User Equipment (UE). To facilitate the implementation of different data services and requirements, the elements of the 5GC (also referred to as network functions) have been simplified with some of the elements being software based and some being hardware based, such that these elements can be adapted as needed. SUMMARY

[0003] The example embodiments disclosed herein are directed to addressing one or more of the problems set forth in the background section above, and providing additional features that will become apparent to those of ordinary skill in the art upon reading the following detailed description. In accordance with various embodiments, example systems, methods, devices, and computer program products are disclosed herein. It will be understood, however, that these embodiments are presented by way of example only, and not by way of limitation, and that modifications can be made by those of ordinary skill in the art to the disclosed embodiments, in keeping with the scope of the disclosure, as set forth in the appended claims (e.g., including combinations of features from various disclosed examples, embodiments, and / or implementations).

[0004] At least one aspect relates to the following system, method, apparatus, or computer readable medium. A wireless communication device (e.g., UE) can receive at least one signal (e.g., synchronization signal / channel) from a wireless communication node (e.g., BS). The wireless communication device can perform an operation based on the at least one signal. The operation can include at least one of: measuring, evaluating, monitoring, receiving, initiating, initiating (e.g., based on a time measurement), synchronizing, timing, transmitting, or selecting (e.g., cell selection, cell reselection). The at least one signal can include at least one of a first signal or a second signal. The first signal can include at least one of: a low-power synchronization signal (LP-SS), a first primary synchronization signal (PSS), a first secondary synchronization signal (SSS), a first synchronization signal block (SSB), a sequence, a Zadoff-Chu (ZC) sequence, or an m-sequence. In some embodiments, the sequence can be a preamble. The second signal can include at least one of: a synchronization signal block (second SSB), a channel state information reference signal (CSI-RS), a second PSS, or a second SSS. In some embodiments, the first PSS / SSS and the second PSS / SSS can be the same or different.

[0005] In some embodiments, the wireless communication device can perform the operation based on the at least one signal when at least one condition is met. The at least one condition can be based on at least one of: the first signal; the first signal and a time duration; a device type of the wireless communication device; beam information; a particular timer; a discontinuous reception (DRX) or enhanced DRX (eDRX) cycle; or a particular criterion.

[0006] In some embodiments, the wireless communication device can perform the operation based on the at least one signal (e.g., to obtain a result) according to at least one indicator (e.g., to obtain the result). The at least one indicator can be based on (e.g., can be measured or defined based on (or according to)) at least one of: a particular level; a particular symbol; a particular resource element; a particular resource unit; a particular coding scheme; a particular modulation type or scheme; a particular waveform; or a bearer information.

[0007] In some embodiments, the operation can include measurement for at least one metric, and the at least one metric includes: a reference signal received power (RSRP) of the at least one signal, a reference signal received quality (RSRQ) of the at least one signal, a signal-to-interference-plus-noise ratio (SINR) of the at least one signal, a detection rate, or a metric for a quality or power of the at least one signal.

[0008] In some embodiments, the wireless communication device can perform the operation according to a relaxed measurement rule / criterion / criteria / standard / method based on the at least one signal. The relaxed measurement rule and the regular measurement can be based on the second signal. In some embodiments, the relaxed measurement rule and the regular measurement can be based on the first signal and the second signal. In some embodiments, the relaxed measurement rule and the regular measurement can be based on the first signal.

[0009] The relaxed measurement rule can include at least one of: performing the measurement according to a longer period than a regular or default or predetermined measurement period; performing the measurement when the wireless communication device is not in a regular mode; performing the measurement based on at least one condition; or performing the measurement for a serving cell, an intra-frequency cell, a new radio (NR) inter-frequency cell, or an inter-RAT frequency cell. In some embodiments, the regular or default or predetermined measurement period can not be relaxed for measurement. In certain embodiments, the regular or default or predetermined measurement period can be relaxed for measurement. The at least one condition can be based on at least one of: the first signal; the first signal and a time duration; a device type of the wireless communication device; beam information; a specific timer; a discontinuous reception (DRX) or enhanced DRX (eDRX) period; or a specific criterion. The condition can also be based on an RRC configuration, a DCI (Downlink control information) indication, or a SIB configuration.

[0010] In some embodiments, the operation can be performed according to relaxed measurement rules when at least one of the following conditions is met: the indicator of the first signal is greater than or less than or equal to a first threshold (e.g., different indicators can have different first thresholds); a change in the indicator of the first signal is greater than or less than or equal to a second threshold; the indicator of the first signal is greater than or less than or equal to a third threshold for a first duration (e.g., can occur within the duration) or for more than the first duration (e.g., can remain during the entire duration); a change in the indicator of the first signal is greater than or less than or equal to a fourth threshold for a second duration; the indicator of the first signal is greater than or less than or equal to a fifth threshold for at least a first number of times; a change in the indicator of the first signal is greater than or less than or equal to a sixth threshold for at least a second number of times; the wireless communication device is configured with one or more specific parameters; the wireless communication device is of a specific device type; the wireless communication device is not at an edge of a cell or at a center of a cell; the wireless communication device is stationary or low speed mobile; the wireless communication device receives a wake-up signal; the wireless communication device is configured with an enhanced discontinuous reception (eDRX) cycle that is greater than or less than a seventh threshold (e.g., greater than a duration (e.g., x seconds); or less than y hours); a duration of time has passed since a last performed measurement that is less than or greater than an eighth threshold (e.g., less than 4 hours has passed since a last performed measurement for cell reselection); a distance between the wireless communication device and a reference location is less than or greater than a ninth threshold (e.g., “less than” can also mean shorter than; such as less than or greater than a distance threshold (distanceThresh)); a timer expires; beam information has not changed or has changed. In some embodiments, the indicator can also be a value of the indicator. The wireless communication device low speed mobile can indicate / imply at least one of: the UE satisfies a low mobility criterion or the UE has low mobility. The wireless communication device not at an edge of a cell can indicate / imply at least one of: the UE satisfies a non-cell edge criterion or the UE is not at an edge of a cell. The wireless communication device being stationary can imply / indicate that the UE satisfies a stationary criterion. The wireless communication device being at a center of a cell can imply / indicate that the UE satisfies a cell center criterion. The beam information can include an associated SSB index or a CSI-RS resource.

[0011] In some embodiments, the wireless communication device can perform the operation according to regular measurement rules (e.g., according to a configured DRX cycle) based on the at least one signal. In some embodiments, the relaxed measurement can indicate / imply that the UE measures with a greater measurement period.

[0012] In some embodiments, the operation can be performed according to regular measurement rules when at least one of the following conditions is met: the indicator of the first signal is greater than or less than or equal to a first threshold; a change in the indicator of the first signal (e.g., a difference, such as (S rxlev -S rxlevRefgreater than or less than or equal to a third threshold value; the indicator of the first signal is greater than or less than or equal to a fourth threshold value over a second duration of time; the indicator of the first signal is greater than or less than or equal to a fifth threshold value for at least a first number of times; a change in the indicator of the first signal is greater than or less than or equal to a sixth threshold value for at least a second number of times; the wireless communication device is not configured with one or more particular parameters; the wireless communication device is of a particular device type; the wireless communication device is at an edge of a cell or not at a center of a cell; the wireless communication device is non-stationary or high speed mobile; the wireless communication device receives or does not receive a low power wake-up signal; a timer expires; beam information is changed or not changed.

[0013] In some embodiments, for the relaxed measurement rule, the regular measurement rule, the first threshold value, the second threshold value, the third threshold value, the fourth threshold value, the fifth threshold value, or other threshold value, the first duration of time or the second duration of time, the first number of times or the second number of times, can have the same value or different values for the case where the UE performs measurements based on the first signal and the second signal. They can have different values in different embodiments. For example, the first threshold value for the relaxed measurement rule, the first threshold value for the regular measurement, the first threshold value for the combined case of the first signal and the second signal, are different.

[0014] In some embodiments, the relaxed measurement rule can be applied to a serving cell of the wireless communication device, a same frequency New Radio (NR) cell, a different frequency NR cell, or an inter-Radio Access Technology (inter-RAT) Evolved Universal Mobile Telecommunications System Terrestrial Radio Access Network (E-UTRAN) cell.

[0015] In some embodiments, the wireless communication device can perform an evaluation of a cell selection criterion or a cell reselection criterion based on the first signal. The wireless communication device can perform a cell selection or reselection based on the first signal. The cell selection criterion or the cell reselection criterion can include a parameter or criterion based on the first signal.

[0016] In some embodiments, performing the operation can include performing, by the wireless communication device, measurements based on the first signal and the second signal; performing, by the wireless communication device, measurements based on a low power synchronization signal (LP-SS) and the second signal; or performing, by the wireless communication device, measurements based on the LP-SS and the second SSS or the second SSB.

[0017] In some embodiments, the wireless communication device can determine whether at least one condition (e.g., a condition of the LP-SS, or a condition of the LP-SS and the SSB / SSS / CSI-RS) is satisfied. The wireless communication device can perform measurements according to regular measurement rules or relaxed measurement rules. The at least one condition can include a condition based on the first signal, a condition based on the second signal, or a condition based on the first signal and the second signal.

[0018] In some embodiments, the first signal includes at least one of: an identifier (ID) of a cell, a partial ID of a cell, or information based on the identifier of the cell; a notification of a system information change related to one or more parameters of a neighboring cell, a threshold, a cell barring, or a criterion for cell selection or cell reselection; information about a barred cell; information about grouping of wireless communication devices (e.g., a cell-specific UE, a plurality of UEs, a group of UEs, or a plurality of UEs in a group with a group ID); beam information; synchronization information, frame number information, a portion of frame number information, or information based on frame number for a serving cell or a neighboring cell; system information block type 1 (SIB1) or SIB related information, and / or corresponding physical downlink control channel (PDCCH) related information for a serving cell or a neighboring cell; a modification or change of system information; an earthquake and tsunami warning system (ETWS) notification; a commercial mobile alert system (CMAS) notification; synchronization information; a time point information or a time domain location; or symbol or slot or frame or half frame information.

[0019] In some embodiments, the first signal can be used for at least one of: time / frequency tracking, CSI computation, L1-RSRP computation, L1-SINR computation, mobility, tracking during fast SCell (Secondary cell) activation, or assistance to the above. Synchronization information can be indicated / represented by the first signal that the UE can obtain timing information.

[0020] In some embodiments, the first signal can be at least one of: at least configured with a periodicity; at least configured with an offset; at least configured with a window; at least configured with a time or frequency resource; at least configured with a timer; at least configured with a duration; configured with one or more transmissions or resources; configured based on a measurement period; configured during or within a measurement period; configured between two SSBs; configured between two predetermined SSBs or two SSBs configured through radio resource control (RRC) signaling; configured between two adjacent SSBs; configured during a duration; at least configured with a pattern; configured to be associated with an SSB; modulated based on amplitude shift keying (ASK) or frequency shift keying (FSK) modulation; modulated based on on-off keying (OOK) modulation; encoded through Manchester encoding; represent information based on a high level or a first logic level and a low level or a second logic level; configured with a defined high level or logic level for representing ‘1’ information and a low level or logic level for representing ‘0’ information; configured to include at least one preamble; or configured to include at least one preamble and a subsequent data portion or payload portion.

[0021] In some embodiments, the wireless communication device performing the monitoring can be based on at least one signal, the monitoring comprising at least one of: monitoring a downlink signal or channel, monitoring a physical downlink control channel (PDCCH) or PDCCH occasion, monitoring a paging occasion or a paging PDCCH occasion, monitoring a synchronization signal block (SSB), or monitoring a CSI-RS. The wireless communication device performing the receiving can be based on at least one signal, the receiving comprising at least one of: receiving a downlink signal or channel, receiving a paging channel or a paging physical downlink control channel (PDCCH) or a paging physical downlink shared channel (PDSCH), receiving a synchronization signal block (SSB), or receiving a channel state information reference signal (CSI-RS). The wireless communication device performing the starting can be based on at least one signal, the starting comprising at least one of: starting a timer, starting a discontinuous reception (DRX) related timer, starting a DRX active or inactive time, or starting receiving or monitoring or transmitting a signal or channel. The DRX related timer can comprise a drx-onDurationTimer and / or a drx-InactivityTimer. The wireless communication device performing the initiating can be based on at least one signal, the initiating comprising at least one of: initiating a measurement, initiating a time-based measurement, initiating a cell selection procedure, or initiating a measurement of a neighbor cell.

[0022] In some embodiments, the operation can be performed according to relaxed measurement rules when at least one of the following conditions is met: the indicator of the first signal is greater than or less than or equal to a first threshold (different indicators can have different first thresholds); a change in the indicator of the first signal is greater than or less than or equal to a second threshold; the indicator of the first signal is greater than or less than or equal to a third threshold for a first duration (e.g., can occur within the duration) or for more than the first duration (e.g., can remain during the entire duration); a change in the indicator of the first signal is greater than or less than or equal to a fourth threshold for a second duration or during the second duration; the indicator of the first signal is greater than or less than or equal to a fifth threshold for at least a first number of times; a change in the indicator of the first signal is greater than or less than or equal to a sixth threshold for at least a second number of times; the wireless communication device is configured with one or more specific parameters; the wireless communication device is of a specific device type; the wireless communication device is not at an edge of a cell or at a center of a cell; the wireless communication device is stationary or low speed mobile; the wireless communication device receives a wake-up signal; the wireless communication device is configured with an enhanced discontinuous reception (eDRX) cycle that is greater than or less than a sixth threshold (e.g., greater than a duration (e.g., x seconds); or less than y hours); a duration less than or greater than an eighth threshold has elapsed since a last performed measurement (e.g., less than 4 hours has elapsed since a last performed measurement for cell reselection); a distance between the wireless communication device and a reference location is less than or greater than a ninth threshold (e.g., “less than” can also mean shorter than; such as less than or greater than a distance threshold (distanceThresh)); a timer expires; beam information has not changed or has changed. In some embodiments, the indicator can also be a value of the indicator. The wireless communication device low speed mobile can indicate / imply at least one of the following: the UE satisfies a low mobility criterion or the UE has a low mobility or stationary criterion. The wireless communication device not at an edge of a cell can indicate / imply at least one of the following: the UE satisfies a non-cell edge criterion or the UE is not at an edge of a cell. The wireless communication device being stationary can imply / indicate that the UE satisfies a stationary criterion. The wireless communication device being at a center of a cell can imply / indicate that the UE satisfies a cell center criterion. The beam information can include an associated SSB index or a CSI-RS resource.

[0023] In some embodiments, a wireless communication node (e.g., a BS) can transmit at least one signal to a wireless communication device (e.g., a UE). The wireless communication device can perform an operation based on the at least one signal. BRIEF DESCRIPTION OF DRAWINGS

[0024] Various example embodiments of the present solution are described in detail below with reference to the following drawings. These drawings are provided for purposes of illustration only and are not intended to limit the scope of the present solution. The drawings are provided to facilitate reader understanding of the present solution and, therefore, they should not be considered limiting of its breadth or scope in any way. It should be noted that for clarity and ease of illustration these drawings are not necessarily drawn to scale.

[0025] Figure 1 An example cellular communication network in which the techniques disclosed herein can be implemented is shown in accordance with embodiments of the present disclosure;

[0026] Figure 2 Block diagrams of example base stations and user equipment in accordance with some embodiments of the present disclosure are shown;

[0027] Figure 3 An example energy saving method in accordance with some embodiments of the present disclosure is shown;

[0028] Figure 4 An example energy saving method for performing measurements in accordance with some embodiments of the present disclosure is shown;

[0029] Figure 5 An example energy saving method for performing measurements in accordance with some embodiments of the present disclosure is shown;

[0030] Figure 6 An example energy saving method for performing measurements in accordance with some embodiments of the present disclosure is shown; and

[0031] Figure 7 A flow diagram of energy saving in a communication system in accordance with embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0032] 1. Mobile communication technology and environment

[0033] Figure 1An example wireless communication network and / or system 100 in which the techniques disclosed herein can be implemented is shown in accordance with embodiments of the present disclosure. In the following discussion, the wireless communication network 100 can be any wireless network, such as a cellular network or a NarrowBand Internet of Things (NB-IoT) network, and is referred to herein as the “network 100.” Such an example network 100 includes a cluster of base stations 102 (hereinafter “BSs 102,” also referred to as wireless communication nodes) and user equipment 104 (hereinafter “UEs 104,” also referred to as wireless communication devices) that can communicate with each other via communication links 110 (e.g., wireless communication channels), as well as cells 126, 130, 132, 134, 136, 138, and 140 that cover a geographic area 101. In Figure 1 In the example shown, the BSs 102 and UEs 104 are contained within respective geographic boundaries of the cell 126. Each of the other cells 130, 132, 134, 136, 138, and 140 can include at least one base station operating on its assigned bandwidth to provide sufficient wireless coverage to its intended users.

[0034] For example, the BSs 102 can operate on an assigned channel transmission bandwidth to provide sufficient coverage to the UEs 104. The BSs 102 and UEs 104 can communicate via downlink wireless frames 118 and uplink wireless frames 124, respectively. Each wireless frame 118 / 124 can also be divided into subframes 120 / 127, which can include data symbols 122 / 128. In the present disclosure, the BSs 102 and UEs 104 are described herein as “communication nodes” that can generally practice the methods disclosed herein as non-limiting examples. According to various embodiments of the present solution, such communication nodes can be capable of wireless and / or wired communication.

[0035] Figure 2 A block diagram of an example wireless communication system 200 for transmitting and receiving wireless communication signals (e.g., OFDM (Orthogonal Frequency Division Multiplexing) / OFDMA (Orthogonal Frequency Division Multiple Access) signals) in accordance with some embodiments of the present solution is shown. The system 200 can include components and elements configured to support known or conventional operational features that need not be described in detail herein. In one illustrative embodiment, the system 200 can be used in a wireless communication environment, such as the network 100 described above, to implement the techniques disclosed herein. Figure 1Data symbols are communicated (e.g., transmitted and received) in a wireless communication environment 100.

[0036] The system 200 generally includes a base station 202 (hereinafter "BS 202") and a user equipment 204 (hereinafter "UE 204"). The BS 202 includes a BS (Base Station) transceiver module 210 (hereinafter also: BS transceiver 210, transceiver 210), a BS antenna 212 (hereinafter also: antenna 212 or downlink antenna 212), a BS processor module 214 (hereinafter also: processor module 214), a BS memory module 216 (hereinafter also: memory module 216), and a network communication module 218, each coupled and interconnected to each other as needed via a data communication bus 220. The UE 204 includes a UE (User Equipment) transceiver module 230 (also: UE transceiver 230, transceiver 230), a UE antenna 232 (hereinafter also: antenna 232 or uplink antenna 232), a UE memory module 234 (hereinafter also: memory module 234), and a UE processor module 236 (hereinafter also: processor module 236), each coupled and interconnected to each other as needed via a data communication bus 240. The BS 202 communicates with the UE 204 via a communication channel 250 (hereinafter also: wireless transmission link 250, wireless data communication link 250), which can be any wireless channel or other medium suitable for data transmission as described herein.

[0037] As those skilled in the art will appreciate, the system 200 can also include any number of modules in addition to those shown in FIG. 1. Figure 2 Those of skill in the art will appreciate that the various illustrative blocks, modules, circuits, and processing logic described in connection with the embodiments disclosed herein can be implemented in hardware, computer-readable software, firmware, or any practical combination thereof. To clearly illustrate this interchangeability of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality, without reference to the particular manner in which they are implemented. Whether such functionality is implemented in hardware, firmware, or software depends on the particular application and design constraints imposed on the overall system. Skilled persons familiar with the concepts described herein can implement such functionality in appropriate ways for each particular application, but such implementation decisions should not be interpreted as limiting the scope of the present disclosure.

[0038] According to some embodiments, the UE transceiver 230 can be referred to herein as an "uplink" transceiver 230 including Radio Frequency (RF) transmitters and RF receivers, each including circuitry coupled to an antenna 232. A duplex switch (not shown) can alternately couple the uplink transmitters or receivers to the uplink antenna in a time duplexed manner. Similarly, according to some embodiments, the BS transceiver 210 can be referred to herein as a "downlink" transceiver 210 including RF transmitters and RF receivers, each including circuitry coupled to an antenna 212. A downlink duplex switch can alternately couple the downlink transmitters or receivers to the downlink antenna 212 in a time duplexed manner. The operations of the two transceiver modules 210 and 230 can be coordinated in time so that the uplink receiver circuitry is coupled to the uplink antenna 232 to receive transmissions over the wireless transmission link 250 at the same time as the downlink transmitter is coupled to the downlink antenna 212. Conversely, the operations of the two transceivers 210 and 230 can be coordinated in time so that the downlink receiver is coupled to the downlink antenna 212 to receive transmissions over the wireless transmission link 250 at the same time as the uplink transmitter is coupled to the uplink antenna 232. In some embodiments, there is a tight time synchronization between changes in duplex direction with a minimum guard time.

[0039] The UE transceiver 230 and the base station transceiver 210 are configured to communicate via the wireless data communication link 250 and in cooperation with appropriately configured RF antenna arrangements 212 / 232 capable of supporting particular wireless communication protocols and modulation schemes. In some illustrative embodiments, the UE transceiver 210 and the base station transceiver 210 are configured to support industry standards such as Long Term Evolution (LTE) and emerging 5G standards, among others. However, it should be understood that the present disclosure is not necessarily limited to application in connection with particular standards and related protocols. Rather, the UE transceiver 230 and the base station transceiver 210 can be configured to support alternative or additional wireless data communication protocols, including future standards or variants thereof.

[0040] According to various embodiments, the BS 202 can be, for example, an evolved Node B (eNB), a serving eNB, a target eNB, a femto station, or a pico station. In some embodiments, the UE 204 can be implemented in various types of user equipment, such as a mobile phone, a smart phone, a Personal Digital Assistant (PDA), a tablet computer, a laptop computer, a wearable computing device, etc. The processor modules 214 and 236 can be implemented or realized with a general purpose processor, a content addressable memory, a digital signal processor, an application specific integrated circuit, a field programmable gate array, any suitable programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. In this manner, the processor can be realized as a microprocessor, a controller, a microcontroller, a state machine, etc. The processor can also be implemented as a combination of a

[0041] Still further, the steps of a method or algorithm described in connection with the embodiments disclosed herein can be embodied directly in hardware, in firmware, in a software module executed by processor modules 214 and 236, respectively, or in any practical combination thereof. The memory modules 216 and 234 can be implemented as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. In this regard, the memory modules 216 and 234 can be coupled to the processor modules 210 and 230, respectively, such that the processor modules 210 and 230 can read information from, and write information to, the memory modules 216 and 234, respectively. The memory modules 216 and 234 can also be integrated into their respective processor modules 210 and 230. In some embodiments, the memory modules 216 and 234 can each include cache memory for storing temporary variables or other intermediate information during execution of instructions to be executed by the processor modules 210 and 230, respectively. The memory modules 216 and 234 can also each include non-volatile storage, for example, to store instructions to be executed by the processor modules 210 and 230, respectively.

[0042] The network communications module 218 generally represents the hardware, software, firmware, processing logic and / or other components of the base station 202 that enable two-way communications between the base station transceiver 210 and other network components and communication nodes configured to communicate with the base station 202. For example, the network communications module 218 can be configured to support Internet or WiMAX (World Interoperability for Microwave Access) traffic. In a typical deployment, but without limitation, the network communications module 218 provides 802.3 Ethernet interfaces so that the base station transceiver 210 can communicate with a conventional Ethernet-based computer network. In this manner, the network communications module 218 can include physical interfaces for connecting to a computer network (e.g., a Mobile Switching Center (MSC)). The term "configured to," "arranged to," and variations thereof as used herein with respect to an indicated operation or function refers to one device, component, circuit, structure, machine, signal, etc. that is physically constructed, programmed, formatted, and / or arranged to perform the indicated operation or function.

[0043] The Open System Interconnection (OSI) model (referred to herein as the "open systems interconnection model") is a conceptual and logical layout that defines network communications used by systems (e.g., wireless communication devices, wireless communication nodes) that interconnect and communicate with other systems. The model is divided into seven sub-components or layers, where each sub-component or layer represents a conceptual set of services provided to upper and lower layers. The OSI model also defines logical networks and effectively describes computer packet delivery by using different layer protocols. The OSI model can also be referred to as the seven-layer OSI model or seven-layer model. In some embodiments, the first layer can be a physical layer. In some embodiments, the second layer can be a Medium Access Control (MAC) layer. In some embodiments, the third layer can be a Radio Link Control (RLC) layer. In some embodiments, the fourth layer can be a Packet Data Convergence Protocol (PDCP) layer. In some embodiments, the fifth layer can be a Radio Resource Control (RRC) layer. In some embodiments, the sixth layer can be a Non Access Stratum (NAS) layer or an Internet Protocol (IP) layer, and the seventh layer is other layers.

[0044] Various example embodiments of the present solution are described below with reference to the accompanying drawings, which enable persons skilled in the art to make and use the present solution. Various changes or modifications to the examples described herein can be made by a person skilled in the art after reading this disclosure, without departing from the scope of the present solution. Thus, the present solution is not limited to the example embodiments and applications described and illustrated herein. Moreover, the particular order or hierarchy of steps in the methods disclosed herein are an example approach. Based on the design preferences, the particular order or hierarchy of steps of the disclosed methods or processes can be re-arranged, while remaining within the scope of the present solution. As such, those skilled in the art will appreciate that the methods and techniques disclosed herein can present various steps or acts in a sample order, and the present solution is not limited to the specific order or hierarchy presented unless explicitly stated otherwise.

[0045] 2. Energy saving system and method

[0046] Low power synchronization signal (LP-SS) can be used for UE power saving. However, how to design / use LP-SS in connected mode or idle / inactive mode is not clear. In this disclosure, how to achieve power saving through relaxed RRM measurement by using LP-SS, related conditions and UE behavior, and how to design low power synchronization signal (LP-SS) are discussed.

[0047] A wireless communication device (e.g., UE) can receive at least one signal (e.g., low power synchronization signal (LP-SS)) from a wireless communication node (e.g., BS). The wireless communication device can perform a measurement based on the at least one signal. The wireless communication can measure at least one indicator of at least one synchronization transmission. The at least one indicator can include at least one of: reference signal received power (RSRP), reference signal received quality (RSRQ), or signal to interference plus noise ratio (SINR).

[0048] A low power synchronization signal (LP-SS) based radio resource measurement (RRM) measurement method can be performed in a wireless communication system.

[0049] Example 1: Reinterpretation of reference signal received power (RSRP), reference signal received quality (RSRQ) and signal to interference plus noise ratio (SINR) for low power synchronization signal (LP-SS)

[0050] In some embodiments, the UE can perform an operation based on the at least one signal according to at least one indicator. The at least one indicator can be based on at least one of: a particular level; a particular symbol; a particular resource element; a particular resource unit; a particular coding scheme; a particular modulation type or scheme; a particular waveform; or a bearer information.

[0051] In some embodiments, the indicator can comprise a reference signal received power (RSRP), a reference signal received quality (RSRQ), a signal to interference and noise ratio (SINR), a detection rate, or an indicator of a quality or power of the at least one signal.

[0052] Reference signal received power (RSRP) (or signal power) can be defined according to at least one of: a specific bearing information, a specific waveform, a specific modulation, a specific coding, or a specific resource unit of at least one synchronization transmission (e.g. low power synchronization signal (LP-SS), synchronization signal block (SSB), secondary synchronization signal (SSS), or channel state information reference signal (CSI-RS)).

[0053] In some embodiments, a low power synchronization signal (SS) reference signal received power (LPSS-RSRP) can be defined as a linear average of power contributions of resource units bearing low power synchronization signals. The resource units can be based on at least one of: resource elements, symbols, or levels. The resource units can be high levels, and the RSRP can be defined based on the high levels. The RSRP can be defined as: high level power contributions - low level power contributions. The RSRP can be defined as: high level power contributions / low level power contributions. The RSRP measurement resource is confined within a time duration. In some embodiments, the RSRP can be a power of one or more synchronization signals. The RSRP can comprise orthogonal frequency division multiplexing (OFDM) symbols.

[0054] In some embodiments, a low power SS reference signal received power (LPSS-RSRP) can be defined as a linear average of power contributions of resource units bearing low power synchronization signals with information “1” or “non-zero”. The resource units can be based on at least one of: resource elements, symbols, levels, or any other form. The resource units can be on-off keying (OOK) symbols. The RSRP can be defined based on OOK symbols bearing information “1” or “non-zero”. Information “0” can indicate / imply no transmission of signals from the gNB side. Information “1” or “non-zero” can indicate / imply transmission of signals from the gNB side, and the signals bear some information comprising “1” or “non-zero”.

[0055] In some embodiments, low-power SS reference signal received power (LP-SS-RSRP) can be defined as a linear average of power contributions of resource units carrying low-power synchronization signals with OOK modulated information “1” or “non-zero”.

[0056] In some embodiments, low-power SS reference signal received power (LP-SS-RSRP) can be defined as a linear average of power contributions of Manchester encoded resource units (e.g., high level).

[0057] Reference signal received quality (RSRQ) (or signal quality) can be defined according to at least one of: a specific carried information, a specific waveform, a specific modulation, a specific encoding, or a specific resource unit of at least one synchronization transmission (e.g., low-power synchronization signal (LP-SS), synchronization signal block (SSB), secondary synchronization signal (SSS), or channel state information reference signal (CSI-RS)). RSRQ can include an orthogonal frequency division multiplexing (OFDM) symbol.

[0058] In some embodiments, RSRQ can be defined according to at least one of: LP-SS received signal strength indicator (RSSI), carried information (e.g., information “0” or information “1”), OOK symbol carrying information “1” or “non-zero”, a level (e.g., high level), or Manchester encoding. For example, RSRQ can be defined based on RSRP / RSSI of all high level LP-SS. RSRQ can be defined based on RSRP (high level RSRP) / (high level RSRP + low level RSRP). RSRQ can be defined based on RSRP / RSSI, where RSSI can be a linear average of total received power observed in at least one of: a specific symbol, OFDM symbol, OOK symbol, or other defined time unit of one or more measurement time resources. RSRQ can be defined based on RSRP / RSSI, where RSSI can be a linear average of total received power observed in a specific level of one or more measurement time resources. A coefficient (e.g., 1 / 2 or a multiple of 1 / 2) can be defined for the above.

[0059] The definition of the signal-to-interference-and-noise ratio (SINR) can be defined according to at least one of the following: a specific bearing information, a specific waveform, a specific modulation, a specific coding, or a specific resource unit of at least one synchronization transmission (e.g., low-power synchronization signal (LP-SS), synchronization signal block (SSB), secondary synchronization signal (SSS), or channel state information reference signal (CSI-RS)). In some embodiments, the SINR can be defined by using a high-level signal power / interference power. The average power of the interference in each symbol can be compared to the power of the LP-SS. Both units can be based on OFDM symbols or OOK symbols.

[0060] In some embodiments, the SINR can be defined according to at least one of the following: a LP-SS received signal strength indication (RSSI), a bearing information (e.g., information “0” or information “1”), an OOK symbol with bearing information “1” or “non-zero”, a level (e.g., high level), or Manchester coding. For example, the SINR can be defined as: a linear average of the power contribution (in units of Watts [W]) of the resource unit carrying the LP synchronization signal divided by a linear average of the noise and interference power contribution. The high-level power contribution can be divided by a linear average of the high-level noise and interference power contribution. The high-level power contribution can be divided by a linear average of the high-level and low-level noise and interference power contribution. The power contribution of information “1” can be divided by a linear average of the noise and interference power contribution. The power contribution of information “1” can be divided by a linear average of the noise and interference power contribution in case of information “0”. The power contribution of OOK symbol = 1 can be divided by a linear average of the noise and interference power contribution in case of OOK symbol = 0. In some embodiments, a correlation value can be defined as other indicators.

[0061] In some embodiments, the operation of multiplexing a secondary synchronization signal (SSS) / PSS can be performed. The LP-SS secondary synchronization signal can be a secondary synchronization signal (SSS), a channel state information reference signal (CSI-RS), a sequence, a Zadoff-Chu (ZC) sequence, an m-sequence, or a preamble, which is defined based on on-off keying (OOK), amplitude shift keying (ASK), frequency shift keying (FSK), or orthogonal frequency division multiplexing (OFDM).

[0062] Implementation Example 2: Correlation procedure of low-power synchronization signal (LP-SS)

[0063] In some embodiments, the UE can perform an operation based on the at least one signal when at least one condition is met. The at least one condition can be based on at least one of: the first signal; the first signal and a time duration; a device type of the wireless communication device; beam information; a particular timer; a discontinuous reception (DRX) or enhanced DRX (eDRX) cycle; or a particular criterion.

[0064] In some embodiments, the UE can perform an operation based on the at least one signal according to relaxed measurement rules / criteria / standards / methods. The relaxed measurement rules and regular measurements can be based on the second signal. In some embodiments, the relaxed measurement rules and regular measurements can be based on the first signal and the second signal. In some embodiments, the relaxed measurement rules and regular measurements can be based on the first signal.

[0065] The relaxed measurement rules can include at least one of: performing measurements according to a longer measurement period than a regular or default or predetermined measurement period; performing measurements when the UE is not in a regular mode; performing measurements based on at least one condition; or performing measurements for a serving cell, an intra-frequency cell, a New Radio (NR) inter-frequency cell, or an inter radio access technology (inter-RAT) frequency cell. In some embodiments, the regular or default or predetermined measurement period can not be relaxed for measurements. In particular embodiments, the regular or default or predetermined measurement period can be relaxed for measurements. At least one of the conditions can be based on at least one of: the first signal; the first signal and a time duration; a device type of the UE; beam information; a particular timer; a discontinuous reception (DRX) or enhanced DRX (eDRX) cycle; or a particular criterion. The condition can also be based on RRC configuration, DCI indication, or SIB (system information block) configuration.

[0066] In some embodiments, the UE can perform the operation according to the relaxed measurement rule when at least one of the following conditions is met: the indicator of the first signal is greater than or less than or equal to a first threshold (different indicators can have different first thresholds); a change in the indicator of the first signal is greater than or less than or equal to a second threshold; the indicator of the first signal is greater than or less than or equal to a third threshold for a first duration (e.g., can occur within the duration) or for more than the first duration (e.g., can remain during the entire duration); the change in the indicator of the first signal is greater than or less than or equal to a fourth threshold for a second duration or during the second duration; the indicator of the first signal is greater than or less than or equal to a fifth threshold for at least a first number of times; the change in the indicator of the first signal is greater than or less than or equal to a sixth threshold for at least a second number of times; the UE is configured with one or more specific parameters; the UE is a specific device type; the UE is not at an edge of a cell or at a center of a cell; the UE is stationary or low speed mobile; the UE receives a wake-up signal; the UE is configured with an enhanced discontinuous reception (eDRX) cycle that is greater than or less than a seventh threshold (e.g., greater than a duration (e.g., x seconds); or less than y hours); a duration since a last performed measurement is less than or greater than an eighth threshold (e.g., less than 4 hours since a last performed measurement for cell reselection); a distance between the UE and a reference location is less than or greater than a ninth threshold (e.g., “less than” can also mean shorter than; such as less than or greater than a distance threshold (distanceThresh)); a timer expires; beam information is unchanged or has changed. In some embodiments, the indicator can also be a value of the indicator. The UE low speed mobile can indicate / imply at least one of: the UE meets a low mobility criterion or the UE has low mobility. The UE not at an edge of a cell can indicate / imply at least one of: the UE meets a non-cell edge criterion or the UE is not at a cell edge. The UE being stationary can imply / indicate that the UE meets a stationary criterion. The UE being at a center of a cell can imply / indicate that the UE meets a cell center criterion. The beam information can include an associated SSB index or a CSI-RS resource.

[0067] In some embodiments, the relaxed measurement rule can be applied to: a serving cell of the UE, an intra-frequency new radio (NR) cell, an inter-frequency NR cell, or an inter-radio access technology (inter-RAT) evolved universal mobile telecommunications system terrestrial radio access network (E-UTRAN) cell.

[0068] In some embodiments, the UE can perform operations according to regular measurement rules when at least one of the following conditions is met: the indicator of the first signal is greater than or less than or equal to a first threshold; the change of the indicator of the first signal is greater than or less than or equal to a second threshold; the indicator of the first signal is greater than or less than or equal to a third threshold for a first duration or over the first duration; the change of the indicator of the first signal is greater than or less than or equal to a fourth threshold for a second duration or over the second duration; the indicator of the first signal is greater than or less than or equal to a fourth threshold for at least a first number of times; the change of the indicator of the first signal is greater than or less than or equal to a fifth threshold for at least a second number of times; the wireless communication device is not configured with one or more specific parameters; the wireless communication device is a specific device type; the wireless communication device is at the edge of a cell or not at the center of a cell; the wireless communication device is non-stationary or high speed moving; the wireless communication device receives or does not receive a low power wake-up signal; a timer expires; or beam information is changed or not changed. Figure 5 An example power saving method for performing measurements is shown in accordance with some embodiments of the disclosure.

[0069] In some embodiments, regular measurements based on the first signal (e.g., LP-SS) or based on the first signal and other conditions can be considered as a relaxed measurement.

[0070] A UE can perform relaxed radio resource measurement (RRM) measurements according to a low power synchronization signal (LP-SS). The UE can determine that at least one condition of the LP-SS is met. When the at least one condition is met, the UE can measure at least one indicator of at least one of the following according to a first relaxed measurement period (e.g., X1 number of discontinuous reception (DRX) cycles or X1 ms): the LP-SS, SSB, SSS, or CSI-RS. The UE can perform a cell selection evaluation according to a second relaxed measurement period (e.g., X2 (or can be the same as or different from the first relaxed measurement period)). Figure 6 An example power saving method for performing measurements is shown in accordance with some embodiments of the disclosure.

[0071] If the indicator or condition of the LP-SS is met (e.g., fulfilled, satisfied, or met), the UE can measure the SS-RSRP and SS-RSRQ levels of the serving cell and evaluate the cell selection criterion S of the serving cell at least once every X1 (e.g., X1 > M1*N1) number of discontinuous reception (DRX) cycles, which represents a relaxed measurement period that is longer than a regular or default or predetermined measurement period.

[0072] If the indicator or condition of the LP-SS is met, the UE can evaluate the cell selection criterion S of the identified and measured intra-frequency cells according to the measurement rule every X2 (e.g., X2 > Tmeasure,NR_Intra_RedCap , or X2> T measure,NR_Intra ) at least one of SS-RSRP and SS-RSRQ is measured at least once.

[0073] If at least one condition (e.g., an indicator or condition of the LP-SS) and other conditions (e.g., when certain parameters (listed below) are configured) are met, the UE can perform relaxed (e.g., less frequent or larger measurement period) measurements (after a longer low power duration).

[0074] In some embodiments, the at least one condition of the LP-SS can include at least one of: at least one indicator of the LP-SS satisfies a threshold; at least one indicator of the LP-SS exceeds a threshold for a certain duration; at least one indicator of the LP-SS satisfies a threshold for at least a certain number of times; a change in an indicator of the LP-SS is greater than or less than or equal to a threshold; a change in an indicator of the LP-SS is greater than or less than or equal to a threshold for a second duration; a change in an indicator of the LP-SS is greater than or less than or equal to a threshold for at least a second number of times.

[0075] The at least one condition can also include: the UE is determined to be at least one of: low mobility, stationary, at a cell edge, satisfy a threshold, or a certain type of UE (e.g., RedCap (Reduced Capability)); or the BS configures the UE with at least one of: low mobility evaluation (lowMobilityEvaluation), cell edge evaluation (cellEdgeEvaluation), stationary mobility evaluation (stationaryMobilityEvaluation), or cell edge evaluation while stationary (cellEdgeEvaluationWhileStationary). The UE can satisfy at least one criterion related to cell edge, cell center, stationary, or low speed. More specifically, the UE can not be at an edge of a cell or not be at a center of a cell; the UE can be stationary or low speed.

[0076] The at least one condition can also include: the UE receives or does not receive a low power wake up signal; for example, when the UE does not receive a low power wake up signal (LP-WUS), the UE can not wake up to measure SSB. When the UE receives the LP-WUS without a specific indication, the UE can not wake up to measure SSB.

[0077] The at least one condition can also include: a timer expires. When the timer expires, the UE can need to perform relaxed measurements. Or, before the timer expires, the UE can need to perform relaxed measurements.

[0078] The at least one condition can further include: beam information changes or does not change: if beam information does not change, or has not changed (for a duration); the UE can perform relaxed measurements.

[0079] The at least one condition can further include: the UE is configured with an enhanced discontinuous reception (eDRX) cycle that is greater or less than a threshold (e.g., greater than a duration (e.g., x seconds); or less than y hours); a duration less or greater than a threshold has passed since a last performed measurement (e.g., less than 4 hours has passed since a last performed measurement for cell reselection); a distance between the UE and a reference location is less or greater than a threshold (e.g., “less” can also mean shorter; e.g., less or greater than a distance threshold).

[0080] In some embodiments, the at least one condition can be applied to relaxed measurements, and can also be applied to regular measurements.

[0081] The UE can perform regular measurements if at least one condition (e.g., a metric or condition of the LP-SS) and other conditions (e.g., when certain parameters (listed below) are configured) are satisfied.

[0082] In some embodiments, the at least one condition can include: at least one metric of the LP-SS satisfies a threshold; at least one metric of the LP-SS satisfies a threshold for at least a certain duration; at least one metric of the LP-SS satisfies a threshold for at least a certain number of times; a change in a metric of the LP-SS is greater than or less than or equal to a threshold; a change in a metric of the LP-SS is greater than or less than or equal to a threshold for a second duration; a change in a metric of the LP-SS is greater than or less than or equal to a threshold for at least a second number of times.

[0083] The at least one condition can further include: the UE is determined to be at least one of: low mobility, stationary, at a cell edge, satisfies a threshold, or a certain type of UE (e.g., RedCap); or the BS does not configure the UE with at least one of the following parameters: lowMobilityEvaluation, cellEdgeEvaluation, stationaryMobilityEvaluation, or cellEdgeEvaluationWhileStationary. The UE can or can not satisfy at least one criterion related to being at a cell edge, being at a cell center, being stationary, or being low speed. More specifically, the wireless communication device is at an edge of the cell or is not at a center of the cell; the wireless communication device is not stationary or is moving at a high speed.

[0084] The at least one condition can further include: the UE receiving or not receiving a low power wake-up signal; for example, when the UE does not receive the LP-WUS for a duration, the UE can wake up to measure the SSB. When the UE receives the LP-WUS, the UE can wake up to measure the SSB.

[0085] The at least one condition can further include: a timer expiring. When the timer expires, the UE can need to perform regular measurements. Or, before the timer expires, the UE can need to perform regular measurements.

[0086] The at least one condition can further include: beam information changing or not changing: if the beam information changes or has changed for a duration, the UE can perform regular measurements.

[0087] The at least one condition can further include: the UE being configured with an enhanced discontinuous reception (eDRX) cycle that is greater than or less than a threshold (e.g., greater than a duration (such as x seconds); or less than y hours); a duration less than or greater than a threshold has passed since a last performed measurement (e.g., less than 4 hours has passed since a last performed measurement for cell reselection); a distance between the UE and a reference location is less than or greater than a threshold (e.g., “less than” can also mean shorter than, such as less than or greater than a distance threshold).

[0088] The measuring at least one indicator can include: performing measurements on a serving cell, a neighboring cell, a same frequency cell (e.g., a cell in a same frequency band), a different frequency cell (e.g., a NR cell in a different frequency band), or an inter-RAT cell (e.g., a cell using a different RAT (such as 4G LTE and 5G)) (e.g., an inter-RAT evolved universal terrestrial radio access network (E-UTRAN) cell). The condition can include the LP-WUS signal being received. The condition can include the detected beam information not changing.

[0089] According to the LP-SS, the UE can perform measurements based on a synchronization signal block (SSB). The UE can determine that at least one condition is satisfied or continuously satisfied. In response to the at least one condition being satisfied or continuously satisfied, at least one of the following is performed: the UE measures at least one indicator in the SSB, SSS, or CSI-RS according to a first relaxed measurement period or a configured discontinuous reception (DRX) period when the at least one condition of the LP-SS is satisfied or continuously satisfied. The UE can perform a cell selection evaluation according to the measured at least one indicator.

[0090] If the indicator or condition of LP-SS is met (e.g., a relaxed measurement period is used), the UE can detect / receive / measure SSB according to (the relaxed) measurement period (e.g., once per relaxed measurement period). As long as the LP-SS continues to meet the condition throughout the relaxed / extended measurement period, the UE does not wake up (to detect / receive SSB) until the end of the relaxed / extended measurement period (when the UE is going to wake up).

[0091] If the indicator or condition of LP-SS is met, the UE can detect / receive SSB at the end of (the relaxed) measurement period. If the indicator or condition of LP-SS is met, the UE can measure SS-RSRP and SS-RSRQ levels (e.g., for SSB) of the serving cell, and can use the measurement results to evaluate the cell selection criterion S of the serving cell at least once per duration (e.g., XI DRX periods, which can correspond to the relaxed measurement period).

[0092] If the indicator or condition of LP-SS is met, the UE can measure SS-RSRP and SS-RSRQ at least once per duration (e.g., X2 DRX periods) for the intra-frequency cells identified and measured according to the measurement rule.

[0093] If the indicator or condition of LP-SS and other conditions are met (e.g., parameters are met / configured), the UE can detect / receive SSB in (or according to) (the relaxed / longer / extended) measurement period. The met indicator or condition of LP-SS can include at least one of: the signal power / quality (e.g., associated indicator) of the LP-SS is greater than / less than a threshold (the indicator can be used to indicate signal power or quality, signal power variation, quality variation, or any other meaning based on power or quality); the signal power / quality meets the indicator greater than / less than a threshold for a duration (the duration can be a relaxed measurement period, RRC configured, predefined / pre-defined); the signal power / quality (e.g., associated indicator) of the LP-SS is greater than / less than a certain number / threshold number (the certain number / threshold number can be RRC configured, predefined / pre-defined); the UE location meets a condition such as “in cell center” or “not in cell edge”; the UE mobility meets a condition such as “stationary”, “low mobility”; or whether a wake-up indication or LP-WUS is detected. Other conditions or parameters can also be met together.

[0094] Figure 4 An example power saving method for performing measurements according to some embodiments of the disclosure is shown. When the indicator or condition of LP-SS is met (e.g., cell selection criterion S > threshold), the UE can measure / monitor / detect the LP-SS.

[0095] If the metrics or conditions of LP-SS are met, the UE can not wake up to detect / receive SSB until a change occurs (e.g., the metrics or conditions are no longer met). The UE can determine that at least one condition is not met or is no longer met. In response to the at least one condition not being met or no longer being met, at least one of the following is performed: the UE measures at least one metric in SSB, SSS, or CSI-RS according to a first relaxed measurement period or a configured discontinuous reception (DRX) period (e.g., a regular (non-relaxed) measurement period for fallback mechanism). The UE can perform a cell selection evaluation according to the measured at least one metric. When the metrics or some conditions based on LP-SS are met or not met, the UE can measure SS-RSRP and SS-RSRQ levels of a serving cell, and can use the measurement results to evaluate cell selection criteria S for the serving cell. When the metrics or some conditions based on LP-SS are met or not met, the UE can measure SS-RSRP and SS-RSRQ at least once every X2 DRX periods for an intra-frequency cell identified and measured according to the measurement rule. If the metrics or conditions of LP-SS and other conditions are met (e.g., parameters are met / configured), the UE can not need to wake up to detect / receive SSB until the metrics or conditions are not met.

[0096] In some embodiments, the case where the metrics or some conditions of LP-SS are met or not met can include at least one of the following: the signal power / quality of LP-SS is such that a metric is greater than / less than a threshold (the metric can be used to indicate signal power or quality, signal power variation, quality variation, or any other meaning based on power or quality); the signal power / quality of LP-SS is such that a metric is greater than / less than a threshold for a duration (the duration can be a relaxed measurement period, RRC configured, predefined / predefined), where the duration can be a number of DRX periods or a number of periods for LP-SS; the signal power / quality of LP-SS is such that a metric is greater than / less than a certain number / threshold number of times (the certain number / threshold number of times can be RRC configured, or predefined / predefined); the UE location does not satisfy a condition such as “at the center of the cell” or “not at the edge of the cell”; the UE mobility does not satisfy a condition such as “stationary” or “low mobility”; or a wake-up indication is not detected. Other conditions can include mobility (including low mobility, stationary mobility), cell edge, threshold, or UE type (e.g., RedCap). Other parameters can include condition-related parameters.

[0097] According to LP-SS (e.g., for assistance or for determination), the UE can initiate measurement (or evaluation) of a serving cell, an intra-frequency NR cell, an inter-frequency NR cell, or an inter-RAT E-UTRAN cell.

[0098] LP-SS for assistance:

[0099] When the measurement or evaluation of the LP-SS meets (or does not meet) the condition or indicator (e.g., when the indicator value (such as RSRP) of the LP-SS is greater than a threshold), the UE can initiate measurement of the serving cell based on SSB / CSI-RS. For example, the cell selection criteria for the LP-SS / WUR can be met or not met.

[0100] If the measurement or evaluation of the LP-SS meets (or does not meet) the condition or indicator, the UE can initiate measurement of all neighboring cells based on SSB / CSI-RS.

[0101] When the measurement or evaluation of the LP-SS meets (or does not meet) the condition or indicator, the UE can initiate measurement or evaluation of the intra-frequency NR cell, inter-frequency NR cell, inter-RAT E-UTRAN cell based on SSB / CSI-RS.

[0102] LP-SS for decision:

[0103] If the UE evaluates the LP-SS in the duration that the cell selection criteria is not met for the serving cell, the UE can initiate measurement of all neighboring cells based on the measurement or evaluation of the LP-SS.

[0104] When the measurement or evaluation of the LP-SS meets (or does not meet) the condition or indicator, the UE can initiate measurement or evaluation of the intra-frequency NR cell, inter-frequency NR cell, inter-RAT E-UTRAN cell based on the LP-SS.

[0105] A fallback mechanism can be performed. If a UE in RRC_IDLE does not find any new suitable cell based on search and measurement using intra-frequency, inter-frequency and / or inter-RAT information based on LP-SS, the UE can initiate cell selection procedure based on SSB or LP-SS for the selected public land mobile network (PLMN). If a UE in RRC_IDLE does not find any new suitable cell based on search and measurement using intra-frequency, inter-frequency and / or inter-RAT information based on LP-SS, the UE can search and measure using intra-frequency, inter-frequency and / or inter-RAT information based on SSB / CSI-RS. If the UE still does not find a suitable cell after performing the above operations, the UE can initiate cell selection procedure based on SSB for the selected PLMN. If the criteria or conditions for LP-SS are met (or not met), the UE can perform regular (e.g., non-lenient measurement scheduling, regular DRX cycle) intra-frequency, NR inter-frequency or inter-RAT frequency measurements based on SSB.

[0106] If the criteria or conditions for LP-SS and other conditions / parameters are met (or not met), the UE can perform regular intra-frequency, NR inter-frequency or inter-RAT frequency measurements based on SSB. The other conditions can include at least one of the following: low mobility, stationary mobility, cell edge, threshold, UE type (e.g., RedCap). The other parameters can include condition related parameters.

[0107] In some embodiments, a UE can perform an operation based on at least one signal according to a lenient measurement rule. The lenient measurement rule can include at least one of the following: a lenient measurement period is longer than a regular or default or predetermined measurement period; the lenient measurement can be performed when the UE is not in a regular mode; the lenient measurement can be performed based on at least one condition; or the lenient measurement can be applied to a serving cell, an intra-frequency cell, a New Radio (NR) inter-frequency cell, or an inter-Radio Access Technology (inter-RAT) frequency cell.

[0108] Implementation Example 3: Combining LP-SS measurement results and SSB measurement results

[0109] In some embodiments, a UE can perform a measurement based on a first signal and a second signal; or based on a low power synchronization signal (LP-SS) and a second signal; or based on the LP-SS and a second SSS or based on a second SSB.

[0110] In some embodiments, a UE can determine whether at least one condition is met, and then perform a measurement according to a regular measurement rule or a lenient measurement rule.

[0111] In some embodiments, one condition being satisfied can also include one condition not being satisfied. For example, condition X > 0 is satisfied, which also means condition X <= 0 is not satisfied.

[0112] In some embodiments, the conditions are based on at least one of: the first signal; the first signal and the time duration; a device type of the wireless communication device; beam information; a specific timer; a discontinuous reception (DRX) or enhanced DRX (eDRX) cycle; or a specific criterion. Further, conditions of relaxed or regular measurements can apply here.

[0113] The at least one synchronization transmission can include (i) the LP-SS and (ii) an SSB, SSS, or CSI-RS. The UE can measure SS-RSRP and SS-RSRQ levels of the serving cell and can evaluate cell selection criteria of the serving cell when indicators or specific conditions of the LP-SS and SSB are satisfied or not satisfied.

[0114] When indicators or specific conditions of the LP-SS and SSB are satisfied or not satisfied, the UE can measure SS-RSRP and SS-RSRQ at least once per X2 DRX cycles for intra-frequency cells identified and measured according to the measurement rule. Other conditions or parameters can also need to be satisfied together.

[0115] When measurements or evaluations of the LP-SS and SSB satisfy (or do not satisfy) conditions or indicators, the UE can measure SS-RSRP and SS-RSRQ levels of the serving cell based on SSB / CSI-RS. For example, the condition can be that an indicator (such as RSRP) of the LP-SS is greater than a threshold. For example, cell selection criteria of the LP-SS / WUR can be satisfied or not satisfied.

[0116] If measurements or evaluations of the LP-SS and SSB satisfy (or do not satisfy) conditions or indicators, the UE can initiate measurements of all neighboring cells based on SSB / CSI-RS. When measurements or evaluations of the LP-SS and SSB satisfy (or do not satisfy) conditions or indicators, the UE can initiate measurements or evaluations of intra-frequency NR cells, inter-frequency NR cells, and / or inter-RAT E-UTRAN cells based on SSB / CSI-RS.

[0117] If the UE has evaluated a time duration for the LP-SS and SSB, determines that the serving cell does not satisfy cell selection criteria, the UE can initiate measurements of all neighboring cells based on measurements or evaluations of the LP-SS, SSB, or LP-SS and SSB. When measurements or evaluations of the LP-SS and / or SSB satisfy (or do not satisfy) conditions or indicators, the UE can initiate measurements or evaluations of intra-frequency NR cells, inter-frequency NR cells, and / or inter-RAT E-UTRAN cells based on the LP-SS and / or SSB.

[0118] If the UE in RRC_IDLE does not find any new suitable cell based on the search and measurement using intra-frequency, inter-frequency and / or inter-RAT information based on LP-SS and SSB, the UE can initiate cell selection procedure based on SSB and / or LP-SS for the selected PLMN.

[0119] If the UE in RRC_IDLE does not find any new suitable cell based on the search and measurement using intra-frequency, inter-frequency and / or inter-RAT information based on LP-SS and SSB, the UE can initiate cell selection procedure based on SSB and / or LP-SS for the selected PLMN.

[0120] If the UE measures LP-SS and SSB / CSI-RS simultaneously, or the resources for LP-SS and SSB / CSI-RS overlap / conflict in time domain, the measurement result can be based on SSB / CSI-RS. If the UE measures LP-SS and SSB / CSI-RS simultaneously, or the resources for LP-SS and SSB / CSI-RS overlap / conflict in time domain, the measurement result can be based on SSB / CSI-RS and LP-SS.

[0121] Implementation Example 4: New Criteria

[0122] In some embodiments, the UE can perform an evaluation of a cell selection criterion or a cell reselection criterion based on the first signal; or the cell selection or reselection is performed by the UE based on the first signal.

[0123] In some embodiments, the cell selection criterion or the cell reselection criterion can include a parameter or a criterion based on the first signal. The (inter- cell, inter-RAT or intra-cell) cell selection criterion S can be updated based on the LP-SS.

[0124] Satisfying one or more conditions based on the LP-SS includes that Srxlev can be a cell selection received (RX) level value (dB) based on the LP-SS, Squal-LP-SS can be a cell selection quality value (dB) based on the LP-SS, and / or the UE’s cell selection criterion is satisfied when Srxlev is greater than a first predefined threshold and Squal is greater than a first predefined threshold, where Srxlev contains a first offset value (e.g., Q1) defined for the LP-SS and Squal contains a second offset value (e.g., Q2) defined for the LP-SS.

[0125] For example 1: When Srxlev > 0 and Squal > 0, the cell selection criterion S can be satisfied, where: S = Srxlev + Squal rxlev = Q rxlevmeas – (Q rxlevmin + Q rxlevminoffset ) – P compensation – Q offsettemp + / - Q1; S qual = Q qualmeas – (Q qualmin + Q qualminoffset ) – Q offsettemp + / - Q2. Q1 and Q2 can be defined for LP-SS.

[0126] For example 2: Some of the parameters in the above equations can be updated in the description. Some of these parameters can be removed, or some other parameters can be added.

[0127] The UE can determine whether the serving cell satisfies one or more conditions based on LP-SS. When the serving cell does not satisfy one or more conditions based on LP-SS, but satisfies at least one other specific condition, the UE can perform measurements on intra-frequency, inter-frequency, or inter-RAT cells.

[0128] In some embodiments, the measurement rules for cell reselection can be based on LP-SS, UE with LP-WUS, and / or intra-frequency measurements. For example, the measurement rules can include at least one of: determining whether the serving cell satisfies a condition based on LP-WUS; determining whether the serving cell satisfies a condition based on SSB / CSI-RS; or determining whether the serving cell satisfies Srxlev _LP-SS > Y1 and Squal -LP-SS > Y2.

[0129] If the conditions are not satisfied, the UE can perform one of the following procedures.

[0130] If the serving cell satisfies Srxlev > S IntraSearchP and Squal > S IntraSearchQ :

[0131] - If distanceThresh and referenceLocation are broadcasted in SIB19, and if the UE supports location-based measurement initiation and has obtained its location information:

[0132] - If the distance between the UE and the serving cell reference location referenceLocation is shorter than distanceThresh, the UE can not perform intra-frequency measurements;

[0133] - Otherwise, the UE shall perform intra-frequency measurements;

[0134] - Otherwise, the UE can not perform intra-frequency measurements;

[0135] - Otherwise, the UE shall perform intra-frequency measurements.

[0136] The UE can determine whether the serving cell satisfies one or more conditions based on LP-SS. When the serving cell satisfies one or more conditions based on LP-SS, the UE can perform measurements on intra-frequency, inter-frequency, or inter-RAT cells.

[0137] The UE can need to perform measurements on intra-frequency cells, NR inter- frequency cells, or inter-RAT frequency cells. For measurement rules of NR inter- frequency and inter-RAT frequency, the UE can determine whether the serving cell satisfies a condition based on LP-SS. For example, when the UE needs to perform measurements on intra-frequency cells, NR inter-frequency cells, or inter-RAT frequency cells, one of the conditions can be whether the serving cell satisfies a condition based on LP-SS. For example, when the UE needs to perform measurements on intra-frequency cells or NR inter-RAT frequency cells, the UE can determine whether a measurement criterion of LP-SS is satisfied or whether the serving cell satisfies Srxlev _LP-SS > Y1 and Squal -LP-SS > Y2.

[0138] For example, when the UE needs to perform measurements on intra-frequency cells, NR inter-frequency cells, or inter-RAT frequency cells, one of the conditions can be whether the serving cell satisfies a condition based on LP-SS and SSB / CSI-RS. Srxlev _LP-SS may be a cell selection reception value (e.g., cell selection RX level value (dB)) based on LP-SS. Squal -LP-SS may be a cell selection quality value (e.g., cell selection quality value (dB)) based on LP-SS.

[0139] Implementation Example 5: Condition for relaxed / extended period for RRM measurements

[0140] The UE can perform relaxed measurement on SSB / CSI-RS under at least one of the following conditions: the condition of LP-SS is met (e.g., the indicator meets the threshold); the indicators of SSB and LP-SS meet the threshold; the UE is configured and / or not configured with lowMobilityEvaluation, cellEdgeEvaluation, combineRelaxedMeasCondition, stationaryMobilityEvaluation, cellEdgeEvaluationWhileStationary, or combineRelaxedMeasCondition2.

[0141] The UE can perform relaxed measurement on LP-SS under at least one of the following conditions: the indicator of SSB meets the threshold; the indicator of LP-SS meets the threshold; the indicators of SSB and LP-SS meet the threshold; or the UE is configured and / or not configured with lowMobilityEvaluation, cellEdgeEvaluation, combineRelaxedMeasCondition, stationaryMobilityEvaluation, cellEdgeEvaluationWhileStationary, or combineRelaxedMeasCondition2. The relaxed measurement on LP-SS can indicate / imply that the UE can measure the indicator of LP-SS (e.g., RSRP or RSRQ of serving cell, and evaluate the cell selection criterion of serving cell) at least once per M. M can be a time duration. If not relaxed, the UE can measure the indicator every N, where N < M. Both M and N can be respective time durations, which can be based on seconds, milliseconds, DRX cycle, or other time units.

[0142] The UE can perform relaxed measurement on LP-SS and SSB / CSI-RS under at least one of the following conditions: the indicator of SSB meets the threshold; the indicator of LP-SS meets the threshold; the indicators of SSB and LP-SS meet the threshold; or the UE is configured and / or not configured with lowMobilityEvaluation, cellEdgeEvaluation, combineRelaxedMeasCondition, stationaryMobilityEvaluation, cellEdgeEvaluationWhileStationary, or combineRelaxedMeasCondition2.

[0143] In some embodiments, the measurement period T relaxed is any one of:

[0144] -T measure,NR_Intra and T evaluate,NR_Intra are defined for intra-frequency measurements on NR cells,

[0145] -T measure,NR_Inter and T evaluate,NR_Inter are defined for inter-frequency measurements on NR cells, or

[0146] -T measure,EUTRAN and T evaluate,EUTRAN are defined for inter-RAT E-UTRAN measurements.

[0147] In some embodiments, when switching from normal mode to a low mobility scenario, or a non-cell edge scenario, or a low mobility and non-cell edge scenario during a cell reselection period, the UE shall meet the requirements corresponding to normal mode on the measurement period (T normal ) and subsequently switch to the requirements corresponding to the low mobility scenario, or the non-cell edge scenario, or the low mobility and non-cell edge scenario. The measurement period T normal is any one of:

[0148] -T measure,NR_Intra and T evaluate,NR_Intra are defined for intra-frequency measurements on NR cells,

[0149] -T measure,NR_Inter and T evaluate,NR_Inter are defined for inter-frequency measurements on NR cells, or

[0150] -T measure,EUTRAN and T evaluate,EUTRAN are defined for inter-RAT E-UTRAN measurements.

[0151] Implementation Example 6: Other

[0152] The UE can receive the configuration from the BS through system information block type 1 (SIB1) signaling or other system information (OSI) signaling. The configuration can include at least one of the following: a threshold, an offset, or other parameters for checking the condition based on LP-SS, for initiating or enabling measurements or cell selection evaluation.

[0153] For example, the threshold can be Y1 or Y2. For example, the threshold can be Q1 or Q2. The condition or metric for the UE to initiate the measurement or evaluation of the intra-frequency NR cell, inter-frequency NR cell, and / or inter-RAT E-UTRAN cell based on the LP-SS can be based on the SIB1 / OSI configuration. The condition or metric for the UE to measure or evaluate the serving cell of the LP-SS can be based on the SIB1 / OSI.

[0154] In some embodiments, the first signal (e.g., LP-SS) can carry the following information: a cell identifier (ID), a partial ID of the cell, or information based on the cell’s identifier; a notification of a system information change related to one or more parameters of a neighboring cell, a threshold, a cell barring, or a criterion for cell selection or cell reselection; information about a barred cell; information about a UE grouping; beam information, e.g., associated with an SSB or SSB index, a beam direction, a CSI-RS resource; synchronization information, frame number information, a partial of frame number information, or information based on the frame number for a serving cell or a neighboring cell; system information block type 1 (SIB1) or SIB related information, and / or corresponding physical downlink control channel (PDCCH) related information for a serving cell or a neighboring cell; a modification or change of system information; an earthquake and tsunami warning system (ETWS) notification; a commercial mobile alert system (CMAS) notification; synchronization or timing information, e.g., a time point information or a time domain location; or symbol or slot or frame or half frame information.

[0155] The information carried by the LP-SS can include at least one of: an identifier (ID) of a cell (for assistance), a partial ID of the cell, or information based on the cell’s identifier; a notification of a system information change related to one or more parameters of a neighboring cell, a threshold, a cell barring, or a criterion for cell selection or cell reselection; information about a barred cell; information about a UE grouping; synchronization information, frame number information, a partial of frame number information, or information based on the frame number for a serving cell or a neighboring cell (for decision); system information block type 1 (SIB1) or SIB related information, or corresponding physical downlink control channel (PDCCH) related information, or beam information for a serving cell or a neighboring cell. The beam information can be associated with an SSB, an SSB index, and / or a beam direction.

[0156] The LP-SS can be at least one of: configured with a periodicity; configured with an offset; configured with a window; modulated based on amplitude shift keying (ASK) or frequency shift keying (FSK); modulated based on on-off keying (OOK) modulation; encoded using Manchester encoding; configured with a defined high or logic level to represent ‘1’ information and a defined low or logic level to represent ‘0’ information; configured to include at least one preamble; configured to include at least one preamble and a subsequent data portion or payload portion; or configured with a data portion or payload portion carrying at least one of: synchronization information, system information block type 1 (SIB1) or SIB or physical downlink control channel (PDCCH) related information, or beam information. The beam information can be associated with a SSB, a SB index, and / or a beam direction.

[0157] The UE can perform relaxed RRM measurements based on the LP-SS. According to the LP-SS, the UE can perform measurements on SSBs. According to the LP-SS, the UE can initiate measurements or evaluations on a serving cell, an intra-frequency NR cell, an inter-frequency NR cell, and / or an inter-RAT E-UTRAN cell based on the LP-SS.

[0158] In some embodiments, the UE can perform radio link monitoring (RLM) and / or beam failure recovery (BFR) in connected mode by using the first signal (e.g., LP-SS).

[0159] In some embodiments, the UE can perform radio link monitoring (RLM) and / or beam failure recovery (BFR) in connected mode by using the first signal (e.g., LP-SS) and the second signal (SSB).

[0160] In some embodiments, the LP-SS can be associated with a SSB index. By determining the power or quality of a particular LP-SS, it is decided whether to perform measurements based on the second signal (e.g., SSB).

[0161] Consider when the beam direction managed by the connection state is not consistent with the beam direction detected by the LP-SS, the UE can wake up and detect SSB to determine the new beam association between the LP-SS and SSB. After the detection is done, the UE can enter the sleep mode (e.g., LP-SS). The determination can be done in the same frame to ensure the SSB index is associated with the strongest LP-SS. In the next LP-SS burst set, the UE can continue to determine whether the beam direction is the same as the last time. If it is the same, the UE continues to stay the same. If it is not the same, the UE can wake up and can check the SSB. The base station can configure the UE with a specific or omni-directional. If omni-directional is configured, the LP-WUS can also be omni-directional and the UE can not wake up.

[0162] In some embodiments, the UE can perform monitoring based on the at least one signal, the monitoring comprising at least one of: monitoring a downlink signal or channel, monitoring a physical downlink control channel (PDCCH) or PDCCH occasion, monitoring a paging occasion or paging PDCCH occasion, monitoring a synchronization signal block (SSB), or monitoring a CSI-RS.

[0163] In some embodiments, the UE can perform receiving based on the at least one signal, the receiving comprising at least one of: receiving a downlink signal or channel, receiving a paging channel or a paging physical downlink control channel (PDCCH) or a paging physical downlink shared channel (PDSCH), receiving a synchronization signal block (SSB), or receiving a channel state information reference signal (CSI-RS).

[0164] In some embodiments, the UE can perform starting based on the at least one signal, the starting comprising at least one of: starting a timer, starting a discontinuous reception (DRX) related timer, starting a DRX active or inactive time, or starting receiving or monitoring or transmitting a signal or channel.

[0165] In some embodiments, the UE can perform initiating based on the at least one signal, the initiating comprising at least one of: initiating a measurement, initiating a time-based measurement, initiating a cell selection procedure, or initiating a measurement of a neighboring cell.

[0166] In some embodiments, the UE can perform synchronization / timing based on the at least one signal (e.g., LP-SS). For example, the UE can obtain synchronization / timing information through the LP-SS.

[0167] In some embodiments, the UE can perform transmitting based on the at least one signal (e.g., LP-SS). For example, the UE can transmit ACK (acknowledgement) / NACK (negative acknowledgement) / PUCCH (Physical Uplink Control Channel) / PUSCH (Physical Uplink Shared Channel) / PRACH (Physical Random Access Channel) or other uplink signal / channel.

[0168] In some embodiments, the UE can perform selecting based on the at least one signal (e.g., LP-SS). For example, the UE can perform cell selection, cell reselection, BWP (bandwidth part) selection, carrier selection by LP-SS.

[0169] In some embodiments, the UE performs measuring, evaluating, monitoring, receiving, starting, initiating, synchronizing, timing, transmitting, or selecting based on at least one of the following conditions: the indicator of the first signal is greater than, less than, or equal to a first threshold; a change in the indicator of the first signal is greater than, less than, or equal to a second threshold; the indicator of the first signal is greater than, less than, or equal to a third threshold for a first duration or for more than the first duration; a change in the indicator of the first signal is greater than, less than, or equal to a fourth threshold for a second duration or during the second duration; the indicator of the first signal is greater than, less than, or equal to a fifth threshold for at least a first number of times; a change in the indicator of the first signal is greater than, less than, or equal to a sixth threshold for at least a second number of times; the wireless communication device is configured with one or more specific parameters; the wireless communication device is of a specific device type; the wireless communication device is not at an edge of a cell or at a center of a cell; the wireless communication device is stationary or low speed mobile; the wireless communication device receives a wake-up signal; the wireless communication device is configured with an enhanced discontinuous reception (eDRX) idle mode cycle that is greater than or less than a seventh threshold; a duration less than or greater than a threshold has passed since a last performed measurement; a distance between the wireless communication device and a reference location is less than or greater than a threshold; a timer expires; or beam information has changed or not changed.

[0170] It should be understood that one or more features from the above implementation examples are not exclusive to a particular implementation example, but can be combined in any manner (e.g., in any priority and / or order, in parallel, or otherwise).

[0171] Figure 7 A flow diagram for energy saving according to embodiments of the disclosure is shown. The flow diagram can be used in conjunction with theFigures 1 to 2 Any one or more of the components and devices of the detailed description can implement the method 700. Generally, in some embodiments, the method 700 can be performed by a wireless communication device. Depending on the embodiment, additional operations, fewer operations, or different operations can be performed in method 700. At least one aspect of these operations relates to a system, method, apparatus, or computer readable medium.

[0172] A wireless communication device (e.g., UE) can receive at least one signal (e.g., synchronization signal / channel) from a wireless communication node (e.g., BS). The wireless communication device can perform an operation based on the at least one signal. The operation can include at least one of: measuring, evaluating, monitoring, receiving, initiating, initiating (e.g., based on a time measurement), synchronizing, timing, transmitting, preceding, or selecting. The at least one signal can include at least one of a first signal or a second signal. The first signal can include at least one of: a low power synchronization signal (LP-SS), a first primary synchronization signal (PSS), a first secondary synchronization signal (SSS), a first synchronization signal block (SSB), a sequence, a Zadoff-Chu (ZC) sequence, or an m-sequence. In some embodiments, the sequence can be a preamble. The second signal can include at least one of: a synchronization signal block (second SSB), a channel state information reference signal (CSI-RS), a second PSS, or a second SSS. In some embodiments, the first PSS and the second PSS can be the same or different.

[0173] In some embodiments, the UE can perform preceding, including: preceding a DL signal / UL signal / channel; preceding a DL signal / UL signal / channel according to the LP-SS; measuring a DL signal / UL signal / channel according to the LP-SS; preceding a procedure (e.g., RACH procedure, PDCCH monitoring procedure); preceding a procedure according to the LP-SS.

[0174] In some embodiments, the wireless communication device can perform an operation based on the at least one signal when at least one condition is met. The at least one condition can be based on at least one of: the first signal; the first signal and a time duration; a device type of the wireless communication device; beam information; a particular timer; a discontinuous reception (DRX) or enhanced DRX (eDRX) cycle; or a particular criterion.

[0175] In some embodiments, the wireless communication device can perform an operation based on the at least one signal (e.g., to obtain a result) according to at least one metric (e.g., to obtain a result). The at least one metric can be based on (e.g., can be measured or defined based on (or according to)) at least one of: a particular level; a particular symbol; a particular resource element; a particular resource unit; a particular coding scheme; a particular modulation type or scheme; a particular waveform; or a bearer of information.

[0176] In some embodiments, the operation can include a measurement for at least one metric, and the at least one metric includes: a reference signal received power (RSRP), a reference signal received quality (RSRQ), a signal to interference and noise ratio (SINR), a detection rate, or a metric for a quality or power of the at least one signal.

[0177] In some embodiments, the wireless communication device can perform an operation based on the at least one signal according to a relaxed measurement rule / criterion / standard / method. The relaxed measurement rule and the regular measurement can be based on the second signal. In some embodiments, the relaxed measurement rule and the regular measurement can be based on the first signal and the second signal. In some embodiments, the relaxed measurement rule and the regular measurement can be based on the first signal.

[0178] The relaxed measurement rule can include at least one of: performing a measurement according to a longer period than a regular or default or predetermined measurement period; performing a measurement when the wireless communication device is not in a regular mode; performing a measurement based on at least one condition; or performing a measurement for a serving cell, an intra-frequency cell, a new radio (NR) inter-frequency cell, or an inter-radio access technology (inter-RAT) frequency cell. In some embodiments, the regular or default or predetermined measurement period can not be relaxed for measurement. In particular embodiments, the regular or default or predetermined measurement period can be relaxed for measurement. At least one of the conditions can be based on at least one of: the first signal; the first signal and a time duration; a device type of the wireless communication device; beam information; a particular timer; a discontinuous reception (DRX) or enhanced DRX (eDRX) period; or a particular criterion. The condition can also be based on an RRC configuration, a DCI indication, or a SIB configuration.

[0179] In some embodiments, the operation can be performed according to relaxed measurement rules when at least one of the following conditions is met: the indicator of the first signal is greater than or less than or equal to a first threshold (e.g., different indicators can have different first thresholds); a change in the indicator of the first signal is greater than or less than or equal to a second threshold; the indicator of the first signal is greater than or less than or equal to a third threshold for a first duration (e.g., can occur within the duration) or for more than the first duration (e.g., can remain during the entire duration); a change in the indicator of the first signal is greater than or less than or equal to a fourth threshold for a second duration; the indicator of the first signal is greater than or less than or equal to a fifth threshold for at least a first number of times; a change in the indicator of the first signal is greater than or less than or equal to a sixth threshold for at least a second number of times; the wireless communication device is configured with one or more specific parameters; the wireless communication device is of a specific device type; the wireless communication device is not at an edge of a cell or at a center of a cell; the wireless communication device is stationary or low speed mobile; the wireless communication device receives a wake-up signal; the wireless communication device is configured with an enhanced discontinuous reception (eDRX) cycle that is greater than or less than a seventh threshold (e.g., greater than a duration (e.g., x seconds); or less than y hours); a duration less than or greater than an eighth threshold has elapsed since a last performed measurement (e.g., less than 4 hours has elapsed since a last performed measurement for cell reselection); a distance between the wireless communication device and a reference location is less than or greater than a ninth threshold (e.g., “less than” can also mean shorter than; such as less than or greater than a distance threshold); a timer expires; beam information has not changed or has changed. In some embodiments, the indicator can also be a value of the indicator. The wireless communication device low speed mobile can indicate / imply at least one of: the UE satisfies a low mobility criterion or the UE has low mobility. The wireless communication device not at an edge of a cell can indicate / imply at least one of: the UE satisfies a non-cell edge criterion or the UE is not at an edge of a cell. The wireless communication device being stationary can imply / indicate the UE satisfies a stationary criterion. The wireless communication device being at a center of a cell can imply / indicate the UE satisfies a cell center criterion. The beam information can include an associated SSB index or CSI-RS resource.

[0180] In some embodiments, the wireless communication device can perform the operation according to regular measurement rules (e.g., according to a configured DRX cycle) based on the at least one signal. In some embodiments, the relaxed measurement can mean / imply the UE measures with a greater measurement period.

[0181] In some embodiments, the operation can be performed according to regular measurement rules when at least one of the following conditions is met: the indicator of the first signal is greater than or less than or equal to a first threshold; a change in the indicator of the first signal (e.g., a difference, such as (S rxlev -S rxlevRefgreater than or less than or equal to a third threshold value for a first duration or for more than the first duration; a change in the indicator of the first signal is greater than or less than or equal to a fourth threshold value for a second duration or for more than the second duration; the indicator of the first signal is greater than or less than or equal to a fifth threshold value for at least a first number of times; a change in the indicator of the first signal is greater than or less than or equal to a sixth threshold value for at least a second number of times; the wireless communication device is not configured with one or more particular parameters; the wireless communication device is of a particular device type; the wireless communication device is at an edge of a cell or not at a center of a cell; the wireless communication device is non-stationary or high speed mobile; the wireless communication device receives or does not receive a low power wake-up signal; a timer expires; beam information is changed or not changed.

[0182] In some embodiments, relaxed measurement rules can be applied to operations (e.g., cell selection (reselection) evaluation) on a serving cell of the wireless communication device, a same frequency new radio (NR) cell, a different frequency NR cell, or an inter- radio access technology (inter-RAT) evolved universal mobile telecommunications system terrestrial radio access network (E-UTRAN) cell.

[0183] In some embodiments, the wireless communication device can perform an evaluation of a cell selection criterion or a cell reselection criterion based on the first signal. The wireless communication device can perform cell selection or reselection based on the first signal. The cell selection criterion or the cell reselection criterion can include a parameter or criterion based on the first signal.

[0184] In some embodiments, performing the operation can include performing, by the wireless communication device, a measurement based on the first signal and the second signal; performing, by the wireless communication device, a measurement based on a low power synchronization signal (LP-SS) and the second signal; or performing, by the wireless communication device, a measurement based on the LP-SS and a second SSS or a second SSB.

[0185] In some embodiments, the wireless communication device can determine whether at least one condition (e.g., a condition for a LP-SS, or a condition for a LP-SS and a SSB / SSS / CSI-RS) is satisfied. The wireless communication device can perform a measurement according to a regular measurement rule or a relaxed measurement rule. The at least one condition can include a condition based on the first signal, a condition based on the second signal, or a condition based on the first signal and the second signal.

[0186] In some embodiments, the first signal comprises at least one of: an identifier (ID) of the cell, a partial ID of the cell, or information based on the identifier of the cell; a notification of a system information change related to one or more parameters of a neighboring cell, a threshold, a cell barring, or a criterion for cell selection or cell reselection; information about a barred cell; information about grouping of wireless communication devices (e.g., a cell-specific UE, a plurality of UEs, a group of UEs, or a plurality of UEs in a group with a group ID); beam information; synchronization information, frame number information, a portion of frame number information, or information based on frame number for a serving cell or a neighboring cell; system information block type 1 (SIB1) or SIB related information, and / or corresponding physical downlink control channel (PDCCH) related information for a serving cell or a neighboring cell; a modification or change of system information; an earthquake and tsunami warning system (ETWS) notification; a commercial mobile alert system (CMAS) notification; synchronization information; a time point information or a time domain location; or symbol or slot or frame or half frame information.

[0187] In some embodiments, the first signal can be used for at least one of: time / frequency tracking, CSI computation, L1-RSRP computation, L1-SINR computation, mobility, tracking during fast SCell activation, or assistance to the above. Synchronization information can be indicated / represented by the first signal that the UE can obtain timing information.

[0188] In some embodiments, the first signal can be at least one of: at least configured with a periodicity; at least configured with an offset; at least configured with a window; at least configured with a time or frequency resource; at least configured with a timer; at least configured with a duration; configured with one or more transmissions or resources; configured based on a measurement periodicity; configured during or within a measurement periodicity; configured between two SSBs; configured between two predetermined SSBs or two SSBs configured by radio resource control (RRC) signaling; configured between two neighboring SSBs; configured during a duration; at least configured with a pattern; configured to be associated with an SSB; at least configured with a pattern associated with an SSB; modulated based on amplitude shift keying (ASK) or frequency shift keying (FSK) modulation; modulated based on on-off keying (OOK) modulation; encoded by Manchester encoding; represent information based on a high level or a first logic level and a low level or a second logic level; configured to include at least one preamble; or configured to include at least one preamble and a subsequent data portion or payload portion.

[0189] In some embodiments, the LP-SS can be transmitted by a pattern, or the LP-SS can be associated with an SSB, or the LP-SS can be transmitted by a pattern and the pattern is RRC configured or associated with an SSB.

[0190] In some embodiments, the wireless communication device performing the monitoring can be based on at least one signal, the monitoring comprising at least one of: monitoring a downlink signal or channel, monitoring a physical downlink control channel (PDCCH) or PDCCH occasion, monitoring a paging occasion or a paging PDCCH occasion, monitoring a synchronization signal block (SSB), or monitoring a channel state information reference signal (CSI-RS). The wireless communication device performing the receiving can be based on at least one signal, the receiving comprising at least one of: receiving a downlink signal or channel, receiving a paging channel or a paging physical downlink control channel (PDCCH) or a paging physical downlink shared channel (PDSCH), receiving a synchronization signal block (SSB), or receiving a channel state information reference signal (CSI-RS). The wireless communication device performing the starting can be based on at least one signal, the starting comprising at least one of: starting a timer, starting a discontinuous reception (DRX) related timer, starting a DRX active or inactive time, or starting receiving or monitoring or transmitting a signal or channel. The DRX related timer can comprise a drx-onDurationTimer (DRX on duration timer) and / or a drx-InactivityTimer (DRX inactivity timer). The wireless communication device performing the initiating can be based on at least one signal, the initiating comprising at least one of: initiating a measurement, initiating a time-based measurement, initiating a cell selection procedure, or initiating a measurement of a neighbor cell.

[0191] In some embodiments, operations may be performed according to relaxed measurement rules when at least one of the following conditions is met: an indicator of the first signal is greater than, less than, or equal to a first threshold (different indicators may have different first thresholds); a change in the indicator of the first signal is greater than, less than, or equal to a second threshold; the indicator of the first signal is greater than, less than, or equal to a third threshold in a first duration (for example, it may occur within the duration) or exceeds a first duration (for example, it may be maintained during the entire duration); the change in the indicator of the first signal is greater than, less than, or equal to a fourth threshold in or during a second duration; the indicator of the first signal is greater than, less than, or equal to a fifth threshold for at least a first number of times; the change in the indicator of the first signal is greater than, less than, or equal to a sixth threshold for at least a second number of times; the wireless communication device is configured with one or more The following conditions may be present: a specific parameter; the wireless communication device is of a specific device type; the wireless communication device is not at the edge of a cell or the center of a cell; the wireless communication device is stationary or moving at a low speed; the wireless communication device receives a wake-up signal; the wireless communication device is configured with an enhanced discontinuous reception (eDRX) cycle greater than or less than a sixth threshold (e.g., greater than a duration (e.g., x seconds) or less than y hours); a duration less than or greater than an eighth threshold has elapsed since the last measurement performed (e.g., less than 4 hours have elapsed since the last measurement performed for cell reselection); the distance between the wireless communication device and the reference location is less than or greater than a ninth threshold (e.g., "less than" may also mean shorter than, such as less than or greater than a distance threshold (distanceThresh)); a timer expires; the beam information has not changed or has changed. In some embodiments, the indicator may also be the value of the indicator. Low mobility of the wireless communication device may indicate or imply at least one of the following: the UE meets a low mobility criterion or the UE has a low mobility or stationary criterion. Not being at the edge of a cell may indicate or imply at least one of the following: the UE meets a non-cell edge criterion or the UE is not at the cell edge. Being stationary may mean or indicate that the UE meets the stationary criterion. The wireless communication device being at the center of the cell may mean / indicate that the UE meets the cell center criterion. The beam information may include an associated SSB index or CSI-RS resource.

[0192] In some embodiments, a wireless communication node (eg, a BS) may transmit at least one signal to a wireless communication device (eg, a UE), and the wireless communication device may perform operations based on the at least one signal.

[0193] While various embodiments of the present solution have been described above, it should be understood that they have been presented by way of example only, and not in limitation. Likewise, the various diagrams can depict example architectures or configurations for the convenience of explanation, but again, the present solution is not limited to the architectures or configurations illustrated. As those skilled in the art will appreciate, the solution can be practiced with a variety of alternative architectures, configurations, and examples. Also, any reference to claims in the specification shall not be construed as a limitation of the solution. For example, an act recited as being performed "after" another action can be performed before the other action, or the actions can be performed substantially concurrently or in some other order. Moreover, any reference to claims in the specification shall not be construed as a limitation of the solution. For example, an act recited as being performed "after" another action can be performed before the other action, or the actions can be performed substantially concurrently or in some other order. Moreover, any reference to claims in the specification shall not be construed as a limitation of the solution. For example, an act recited as being performed "after" another action can be performed before the other action, or the actions can be performed substantially concurrently or in some other order. Moreover, any reference to claims in the specification shall not be construed as a limitation of the solution. For example, an act recited as being performed "after" another action can be performed before the other action, or the actions can be performed substantially concurrently or in some other order. Moreover, any reference to claims in the specification shall not be construed as a limitation of the solution. For example, an act recited as being performed "after" another action can be performed before the other action, or the actions can be performed substantially concurrently or in some other order. Accordingly, the breadth and scope of the present disclosure should not be limited by any of the above-described illustrative embodiments.

[0194] It also should be understood that any reference to an element in the specification using a designation such as "first," "second," and so forth does not limit the quantity or order of those elements. Rather, these designations are used as a convenient method of distinguishing between two or more elements or instances of an element. Thus, a reference to the first and second elements does not mean that only two elements can be employed, or that the first element must precede the second element.

[0195] In addition, those skilled in the art will appreciate that any of various technologies and techniques can be used to represent information and signals. For example, data, instructions, commands, information, signals, bits, and symbols that can be referenced throughout the above description can be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0196] Those skilled in the art will further appreciate that any of the various illustrative logical blocks, modules, processors, means, circuits, and algorithm steps described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., a digital implementation, an analog implementation, or a combination of the two), firmware, various forms of program or design code incorporating instructions (which can be referred to herein, for convenience, as "software" or a "software module"), or any combination of these. To clearly illustrate this interchangeability of hardware, firmware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality, without reference to the particular manner in which they are implemented. The present solution contemplates the use of any of a number of technologies and techniques to implement the functions described herein. The choice of technology and techniques can depend on the specific implementation and design constraints imposed on the overall system. Those skilled in the art can implement the described functionality in varying ways for each particular application, but such implementation decisions can not result in deviating from the scope of the present solution.

[0197] Further, those having ordinary skill in the art will appreciate that the various illustrative logical blocks, modules, circuits, and algorithms described herein can be implemented or performed with an integrated circuit (IC), an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. The logical blocks, modules, and circuits can also include antennas and / or transceivers to communicate with various components within a network or within a device. The general purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, or state machine. The processor can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other suitable configuration.

[0198] If implemented in software, the functions can be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Therefore, steps of methods disclosed herein can be implemented as software modules that are stored on a computer-readable medium. A computer-readable medium includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media can be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Also, functional computer- readable media that stores program code in a modulated data signal, such as carrier waves or other transport mechanism, can be utilized. The program code transmitted can be a machine readable medium and transmitted using transmission medium.

[0199] In this document, the term "module" as used herein, refers to software, firmware, hardware and any combination thereof, for performing the associated functions described herein. Also, for the purposes of this document, the various modules described herein are merely illustrative. The term "module" can connote a single component or a combination of components, and can connote control by a single device or a combination of devices. For example, a module can be implemented as a hardware component or a combination of hardware and software components.

[0200] Furthermore, memory or other storage, as well as communication components, can be employed in embodiments of the solution. It will be appreciated that, for clarity, the foregoing description has described embodiments of the solution with reference to different functional units and processors. However, it will be apparent that any suitable distribution of functionality between different functional units, processing logic elements or domains can be used without detracting from the solution. For example, functionality illustrated to be performed by separate processing logic elements or controllers can be performed by the same processing logic element or controller. Hence, references to specific functional units are only to be seen as references to suitable means for providing the described functionality, rather than indicative of a strict logical or physical structure or organization.

[0201] Various modifications to the embodiments described in this disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the scope of the disclosure. Thus, the disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein and made apparent to others skilled in the art by the teachings herein.

Claims

1. A method comprising: receiving, by a wireless communication device, at least one signal from a wireless communication node; and performing, by the wireless communication device, an operation based on the at least one signal. The operation comprises at least one of: measuring, evaluating, monitoring, receiving, initiating, initiating, synchronizing, timing, transmitting, or selecting.

2. The method of claim 1, wherein, The at least one signal comprises at least one of: a first signal or a second signal, 3. The method of claim 1, wherein, wherein the first signal comprises at least one of: a low power synchronization signal (LP-SS), a first primary synchronization signal (PSS), a first secondary synchronization signal (SSS), a first synchronization signal block (SSB), a sequence, a Zadoff-Chu (ZC) sequence, or an m-sequence, and wherein the second signal comprises at least one of: a second SSB, a channel state information reference signal (CSI-RS), a second PSS, or a second SSS. 4.The method of claim 1, comprising: performing, by the wireless communication device, the operation based on the at least one signal when at least one condition is met. The at least one condition is based on at least one of:

5. The method of claim 4, wherein, a first signal; a first signal and a time duration; a device type of the wireless communication device; beam information; a specific timer; a discontinuous reception (DRX) or enhanced DRX (eDRX) cycle; or a specific criterion. 6.The method of claim 1, comprising: performing, by the wireless communication device, the operation based on the at least one signal according to at least one indicator, wherein the at least one indicator is based on at least one of: a specific level; a specific symbol; a specific resource element; a specific resource unit; a specific coding scheme; a specific modulation type or scheme; a specific waveform; or bearer information. The operation comprises a measurement for at least one indicator, and the at least one indicator comprises: a reference signal received power (RSRP), a reference signal received quality (RSRQ), a signal to interference plus noise ratio (SINR), a detection rate, or an indicator for a quality or power of the at least one signal of the at least one signal.

7. The method of claim 3, wherein, 8.The method of claim 1, comprising: performing, by the wireless communication device, the operation based on the at least one signal according to a relaxed measurement rule, wherein the relaxed measurement rule comprises at least one of: performing a measurement according to a longer measurement period than a regular or default or predetermined measurement period; performing a measurement when the wireless communication device is not in a regular mode; performing a measurement based on at least one condition; or performing a measurement for a serving cell, an intra-frequency cell, a new radio (NR) inter-frequency cell, or an inter-radio access technology (inter-RAT) frequency cell. 9.The method of claim 1, 3, 5, 6, or 8, comprising performing the operation according to a relaxed measurement rule when at least one of the following conditions is met: an indicator of a first signal is greater than or less than or equal to a first threshold value; a change in an indicator of a first signal is greater than or less than or equal to a second threshold value; an indicator of a first signal is greater than or less than or equal to a third threshold value in or over a first time duration; ​ a change in the indicator of the first signal is greater than or less than or equal to a fourth threshold value in or during a second duration; the indicator of the first signal is greater than or less than or equal to a fifth threshold value for at least a first number of times; a change in the indicator of the first signal is greater than or less than or equal to a sixth threshold value for at least a second number of times; the wireless communication device is configured with one or more specific parameters; the wireless communication device is of a specific device type; the wireless communication device is not at an edge of a cell or at a center of a cell; the wireless communication device is stationary or low speed moving; the wireless communication device receives a wake-up signal; the wireless communication device is configured with an enhanced discontinuous reception (eDRX) cycle that is greater than or less than a seventh threshold value; a duration of less than or greater than an eighth threshold value has passed since a last performed measurement; a distance between the wireless communication device and a reference location is less than or greater than a ninth threshold value; a timer expires; beam information is unchanged or has changed.

10. The method of claim 1, comprising: performing, by the wireless communication device, the operation based on the at least one signal according to a regular measurement rule.

11. The method of claim 1, 3, 5, 6, or 10, comprising performing the operation according to a regular measurement rule when at least one of the following conditions is met: the indicator of the first signal is greater than or less than or equal to a first threshold value; a change in the indicator of the first signal is greater than or less than or equal to a second threshold value; the indicator of the first signal is greater than or less than or equal to a third threshold value in or over a first duration; a change in the indicator of the first signal is greater than or less than or equal to a fourth threshold value in or over a second duration; the indicator of the first signal is greater than or less than or equal to a fifth threshold value for at least a first number of times; a change in the indicator of the first signal is greater than or less than or equal to a sixth threshold value for at least a second number of times; the wireless communication device is not configured with one or more specific parameters; the wireless communication device is of a specific device type; the wireless communication device is at an edge of a cell or not at a center of a cell; the wireless communication device is non-stationary or high speed moving; the wireless communication device receives or does not receive a low power wake-up signal; a timer expires; beam information is changed or unchanged.

12. The method of claim 8 or 9, the relaxed measurement rule is applied to: a serving cell of the wireless communication device, a same frequency new radio (NR) cell, a different frequency NR cell, or an inter-radio access technology (inter-RAT) evolved universal mobile telecommunications system terrestrial radio access network (E-UTRAN) cell.

13. The method of claim 2, comprising: performing, by the wireless communication device, an evaluation of a cell selection criterion or a cell reselection criterion based on the first signal; or performing, by the wireless communication device, a cell selection or reselection based on the first signal.

14. The method of claim 13, wherein, the cell selection criterion or the cell reselection criterion comprises: a parameter or a criterion based on the first signal.

15. The method of claim 3, wherein, performing the operation comprises: performing, by the wireless communication device, a measurement based on the first signal and the second signal; or performing, by the wireless communication device, a measurement based on the low power synchronization signal (LP-SS) and the second signal; or performing, by the wireless communication device, a measurement based on the LP-SS and the second SSS or the second SSB.

16. The method of claim 5 or 15, comprising: determining, by the wireless communication device, whether at least one condition is satisfied; performing, by the wireless communication device, a measurement according to a regular measurement rule or a relaxed measurement rule.

17. The method of claim 16, wherein, The at least one condition comprises a condition based on the first signal, a condition based on a second signal, or a condition based on the first signal and a second signal.

18. The method of claim 3, wherein, The first signal comprises at least one of: an identifier (ID) of a cell, a partial ID of a cell, or information based on an identifier of a cell; a notification of a system information change, the system information related to one or more parameters of a neighboring cell, a threshold, a cell barring, or a criterion for cell selection or cell reselection; information about a barred cell; information about a wireless communication device grouping; beam information; synchronization information, frame number information, a part of frame number information, or information based on a frame number for a serving cell or a neighboring cell; system information block type 1 (SIB1) or SIB related information for a serving cell or a neighboring cell, and / or corresponding physical downlink control channel (PDCCH) related information; a modification or change of system information; an earthquake and tsunami warning system (ETWS) notification; a commercial mobile alert system (CMAS) notification; synchronization information; a time point information or a time domain location; or a symbol or a slot or a frame or a half frame information.

19. The method of claim 3, wherein, The first signal is at least one of: configured with at least a periodicity; configured with at least an offset; configured with at least a window; configured with at least a time or frequency resource; configured with at least a timer; configured with at least a duration; configured with one or more transmissions or resources; configured based on a measurement period; configured during or within a measurement period; configured between two SSBs; configured between two predetermined SSBs or two SSBs configured by radio resource control (RRC) signaling; configured between two neighboring SSBs; configured during a duration; configured with at least a pattern; configured to be associated with an SSB; modulated based on amplitude shift keying (ASK) or frequency shift keying (FSK) modulation; modulated based on on-off keying (OOK) modulation; encoded by Manchester encoding; representing information based on a high level or a first logic level and a low level or a second logic level; configured to include at least one preamble; or configured to include at least one preamble and a subsequent data portion or payload portion.

20. The method of claim 2 to 19, further comprising: performing, by the wireless communication device, a monitoring based on the at least one signal, the monitoring comprising at least one of: monitoring a downlink signal or channel, monitoring a physical downlink control channel (PDCCH) or a PDCCH occasion, monitoring a paging occasion or a paging PDCCH occasion, monitoring a synchronization signal block (SSB), or monitoring a CSI-RS.

21. The method of claims 2-19, further comprising: performing, by the wireless communication device, a reception based on the at least one signal, the reception comprising at least one of: receiving a downlink signal or channel, receiving a paging channel, or a paging physical downlink control channel (PDCCH), or a paging physical downlink shared channel (PDSCH), receiving a synchronization signal block (SSB), or receiving a channel state information reference signal (CSI-RS).

22. The method of claims 2-19, further comprising: performing, by the wireless communication device, a starting based on the at least one signal, the starting comprising at least one of: starting a timer, starting a discontinuous reception (DRX) related timer, starting a DRX active or inactive time, or starting a reception or monitoring or transmission of a signal or channel.

23. The method of claims 2-19, further comprising: performing, by the wireless communication device, an initiating based on the at least one signal, the initiating comprising at least one of: initiating a measurement, initiating a time-based measurement, initiating a cell selection procedure, or initiating a measurement of a neighboring cell.

24. The method of claims 2, 20, 21, 22, or 23, comprising performing the operations when at least one of the following conditions is met: an indicator of a first signal is greater than or less than or equal to a first threshold; a change in the indicator of the first signal is greater than or less than or equal to a second threshold; the indicator of the first signal is greater than or less than or equal to a third threshold for a first duration or for more than a first duration; the change in the indicator of the first signal is greater than or less than or equal to a fourth threshold for a second duration or during a second duration; the indicator of the first signal is greater than or less than or equal to a fifth threshold for at least a first number of times; the change in the indicator of the first signal is greater than or less than or equal to a sixth threshold for at least a second number of times; the wireless communication device is configured with one or more specific parameters; the wireless communication device is a specific device type; the wireless communication device is not at an edge of a cell or a center of a cell; the wireless communication device is stationary or low speed mobile; the wireless communication device receives a wake-up signal; the wireless communication device is configured with an enhanced discontinuous reception (eDRX) cycle that is greater than or less than a seventh threshold; a duration of less than or greater than an eighth threshold has passed since a last performed measurement; a distance between the wireless communication device and a reference location is less than or greater than a ninth threshold; a timer expires; or beam information has changed or not changed.

25. A method comprising: sending, by a wireless communication node, at least one signal to a wireless communication device, wherein the wireless communication device performs an operation based on the at least one signal.

26. A non-transitory computer-readable medium storing instructions that, when executed by at least one processor, cause the at least one processor to perform the method of any of claims 1-25.

27. An apparatus comprising: at least one processor configured to perform the method of any of claims 1-25.

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