WO2023014278A1

WO2023014278A1 - Network node, wireless device and methods for edrx operation

Info

Publication number: WO2023014278A1
Application number: PCT/SE2022/050747
Authority: WO
Inventors: Muhammad Ali Kazmi; Santhan THANGARASA
Original assignee: Telefonaktiebolaget Lm Ericsson (Publ)
Priority date: 2021-08-06
Filing date: 2022-08-08
Publication date: 2023-02-09

Abstract

A method, system and apparatus are disclosed. According to one or more embodiments, a wireless device (22) includes processing circuitry (84) configured to: determine a paging window of an extended discontinuous reception, eDRX, cycle for the wireless device (22) based on at least one measurement scaling factor where the at least one measurement scaling factor is based on at least one of a reference signal periodicity and a discontinuous reception, DRX, cycle comprised within the determined paging window of the eDRX cycle, and perform at least one action based at least on the determined paging window of the eDRX cycle.

Description

NETWORK NODE, WIRELESS DEVICE AND METHODS FOR EDRX OPERATION

TECHNICAL FIELD

The present disclosure relates to wireless communications, and in particular, to procedures for supporting extended discontinuous reception (eDRX).

BACKGROUND

DRX cycle operation

A wireless device can be configured with a DRX cycle to use in all radio resource control (RRC) states (e.g., RRC idle state, RRC inactive state and RRC connected state) to save wireless device battery power. Examples of lengths of DRX cycles currently used in RRC idle/inactive state are 256 ms, 320 ms, 640 ms, 1.28 s, 2.56 s, 5.12 s, 10.24 s, etc. Examples of lengths of DRX cycles currently used in RRC connected state may range from 256 ms to 10.24 seconds. The DRX cycle is configured by the network node and may be characterized by the following parameters:

- On duration: During the on duration of the DRX cycle, a timer called ‘onDurationTimer’, which is configured by the network node, is running. This timer specifies the number of consecutive control channel subframes (e.g., narrowband physical downlink control channel (NPDCCH) slots) at the beginning of a DRX Cycle, which may also interchangeably be called a DRX ON period. It is the duration (e.g., in number of downlink subframes) during which the wireless device after waking up from DRX may receive a control channel (e.g., NPDCCH, wake up signal, etc.). If the wireless device successfully decodes the control channel (e.g., NPDCCH) during the on duration then the wireless device starts a drx-inactivity timer (as described below) and stays awake until its expiry.

- drx-inactivity tinier: It specifies the number of consecutive control channel (e.g., NPDCCH,) subframe(s) after the subframe in which a control channel (e.g., NPDCCH) indicates an initial uplink (UL) or downlink (DL) user data transmission for this MAC entity. It is also configured by the network node. - DRX active time: This time is the duration during which the wireless device monitors the control channel (e.g., NPDCCH, wake up signals, etc.). In other words, this is the total duration during which the wireless device is awake. This includes the “on-duration” of the DRX cycle, the time during which the wireless device is performing continuous reception while the inactivity timer has not expired and the time the wireless device is performing continuous reception while waiting for a DL retransmission after one hybrid automatic repeat request (HARQ) round trip time (RTT). This means duration over which the drx-inactivity timer is running is also included in DRX active time, i.e., no DRX is used by the wireless device during this time.

- DRX inactive time: The time during the DRX cycle other than the active time is called DRX inactive time, i.e., DRX is used by the wireless device during this time.

The DRX active time and DRX inactive time, also called DRX ON and DRX OFF durations of the DRX cycle respectively, are shown in FIG. 1.. The DRX operation with more detailed parameters is illustrated in FIG. 2. The example of FIG. 3 shows that the DRX active and inactive times may vary depending on wireless device receiver activity, e.g., DRX inactivity timer is running upon the wireless device being scheduled. This in turn increases DRX active time and proportionally shortens the DRX inactive time.

DRX configuration may also be an enhanced or extended DRX (eDRX) configuration which applies in RRC IDLE or RRC INACTIVE states (only up to 10.24 seconds). In legacy DRX related procedures, the wireless device can be configured with DRX cycle length of up to 10.24 seconds. But wireless devices supporting extended/enhanced DRX (eDRX) can be configured with a DRX cycle at least longer than 10.24 seconds and typically much longer than 10.24 seconds, i.e., in the order of several seconds to several minutes. The eDRX configuration parameters include an eDRX cycle length, paging window length, i.e., paging time window (PTW) length, etc. Within a PTW of the eDRX, the wireless device is further configured with one or more number of legacy DRX cycles. eDRX cycle operation In New Radio (NR, also referred to as 5^th Generation (5G)), the enhanced DRX (eDRX) cycle is being specified for a wireless device in RRC IDLE and RRC INACTIVE. One purpose of the eDRX cycle is to further enable wireless device power saving even more than achieved by the wireless device when configured only with DRX cycle. The eDRX cycle ranges between few seconds to several minutes or even hours. In one example, the eDRX cycle may range from 5.12 seconds (shortest eDRX) up to 10485.76 s (largest eDRX). The eDRX cycle may also be a multiple of 1.28 second which is a typical length of a DRX cycle used in idle and inactive states.

The eDRX configuration parameters are negotiated between the wireless device and the network node via higher layer signaling, e.g., via non-access stratum (NAS) messages. During the negotiation, the network node transmits eDRX parameters, which may comprise eDRX cycle length, paging time window (PTW), hyper system frame number (H-SFN), paging H-SFN (PH), etc.

H-SFN includes multiple SFN cycles as shown in FIG. 4. A SFN cycle is a counter which initializes (e.g., SFN counter is set to 0) after certain number of frames. In one example, the SFN cycle includes 1024 frames, i.e., varies from 0 to 1023. H-SFN is a frame structure on top of the legacy SFN structure, where each H- SFN value corresponds to a cycle of legacy frames (e.g., 1024 frames) and one H- SFN cycle contains XI number of SFN cycles, e.g., Xl=1024. The network node (e.g., core network node such as mobility management entities (MMEs), base station (BS), gNodeBs (gNBs), etc.) have the same H-SFN where the network node has a SFN and H-SFN counter, and cells broadcast their H-SFN via system information, e.g., system information block (SIB). The boundaries of the eDRX acquisition period are determined by H-SFN values for which H-SFN mod Xl=0, e.g., Xl=256. The eDRX acquisition period is the time period over which the eDRX is configured or is valid. The eDRX acquisition period starts at certain H-SFN value. During eDRX configuration the wireless device may or may not be configured with the time when the eDRX ends or will be terminated.

The wireless device is configured with PTW by the network node (e.g., by MME) via NAS during, e.g., attach/tracking area update. The beginning of PTW is calculated by a pre-defined formula (as described below). Within a PTW, the wireless device is further configured with a legacy DRX as shown in FIG. 5. PTW is related to both eDRX and DRX, i.e., for same eDRX cycle, the PTW may vary with DRX cycle configured within the PTW. If the DRX cycle is longer then PTW is longer. PF is the radio frame in which the UE is configured with a paging occasion (PO). The wireless device 22 monitors paging during PO. PO includes one or more radio resources containing paging channel, e.g., PDCCH, PDSCH etc.

In one example, PTW (e.g., PTW param eter(s) such as PTW start, PTW end and/or PTW length) is characterized by or determined by the wireless device using the following mechanism:

- Paging H-SFN (PH) (calculated by a formula): o H-SFN mod TeDRX= (UE ID mod TeDRX) o UE ID: IMSI mod X2, e.g., X2=1024 o TeDRX : eDRX cycle of the wireless device, (TeDRX =1, 2, . . ., X3 in hyper-frames) and configured by upper layers, e.g., X3=256.

- PTW start is calculated within PH as follows: o The start of PTW is uniformly distributed across X4 (e.g., X4=4) paging starting points within the PH. o PTW start denotes the first radio frame of the PH that is part the paging window and has SFN satisfying the following equation: o SFN = X3 * ieDRX, where ieDRX = floor(UE_ID/TeDRX,H) mod X4 o PTW end is the last radio frame of the PTW and has SFN satisfying the following equation: o SFN = (PTW start + L*X5 - X6) mod X2, e.g. X5=100, X6=1, where:

■ L = Paging Window length (in seconds) configured by upper layers e.g. via RRC.

- PTW length (configured by higher layers).

A radio frame is of certain duration which can carry one or more radio resources and is repeated with certain periodicity. In one example, the radio frame duration is 10 ms and is repeated also every 10 ms.

In NR the wireless device in idle and inactive states performs different type of measurements for mobility according to certain measurement procedures. In NR, the measurement procedures depend on various factors including mobility scenario, frequency range of the measured cell, SMTC configuration, wireless device power class, etc. While the eDRX cycle has benefit in terms of the reduction in power consumption, the impact of eDRX on NR with respect to the measurement procedures in idle and inactive states is not known. However, it is likely that in existing systems, eDRX may degrade NR mobility performance. The eDRX can have very long ranging from several minutes to even several hours. During the eDRX cycle, the wireless device may likely change the serving cell. But the lack of measurement procedures for eDRX means that the wireless device may perform the cell change to an inappropriate cell, e.g., to a cell which is not sufficiently strong to have the wireless device correctly receive signals such as paging. The consequence will be that the wireless device may miss paging instances and may also have to perform a cell selection procedure. The latter involves much longer time and also increases the power consumption of the wireless device. In millimeter wave such as in FR2, the consequence is even more severe since the wireless device should be provided with an appropriate number of beam sweeping opportunities or occasions. The bandwidth in FR2 is also much larger. Therefore, measurements performed by the wireless device in FR2 consumes more power than in FR1. The lack of measurement procedures for eDRX in FR2 may lead to insufficient time for performing the beam sweeping in order to receive signals from the detected beam. On the other hand unnecessary longer beam sweeping opportunities will waste the wireless device battery power. Hence, there are currently no adequate measurement procedures to support NR specific mobility procedures when eDRX is used.

SUMMARY

Some embodiments advantageously provide methods, systems, and apparatuses for procedures for supporting extended discontinuous reception (eDRX).

One or more embodiments described herein relate to a scenario in which the wireless device is configured with an extended DRX cycle (eDRX) and a DRX cycle, e.g., via higher layer signaling, by the network node, etc. where the DRX cycle < eDRX cycle in terms of for example time duration (e.g., DRX = 1.28 s and eDRX = 2048 s, etc.). One or more embodiments described herein provide methods in both wireless device and network node (e.g., BS, core NW node, etc.). A first embodiment includes a method in a wireless device of determining paging window (e.g., PTW) of an eDRX cycle based on one or more measurement scaling factors, and uses the determined paging window for performing one or more radio operations.

A second embodiment includes a method in a network node (NW) of determining a paging window (e.g., PTW) of an eDRX cycle for a wireless device based on one or more measurement scaling factors used by the wireless device, and uses the determined paging window for performing one or more procedures.

The measurement scaling factor (K) may further be related to one or more of configuration parameters, e.g., beamsweeping, wireless device power class, relation between beamsweeping and wireless device power class, RS periodicity (Trs), relation between Trs and DRX cycle, etc. In particular, in one or more embodiments, the concept of a measurement scaling factor is being applied, as taught herein, to eDRX and more specifically to PTW.

Examples of wireless device radio operations are measurement, beamsweeping, reception of paging, transceiver switching, comparing the determined PTW parameter ( PTW_D) with the configured PTW parameter (PTWc), taking action such as performing measurement based on outcome of the comparison (e.g., if PTWc < PTW_D), etc.

Examples of network/network node procedures are transmission of paging during the determined PTW, configuring the wireless device with PTW which matches with determined PTW based on a rule, determining wireless device measurement time, etc.

According to one aspect of the present disclosure, a wireless device is provided. The wireless device includes processing circuitry configured to: determine a paging window of an extended discontinuous reception, eDRX, cycle for the wireless device based on at least one measurement scaling factor where the at least one measurement scaling factor is based on at least one of a reference signal periodicity and a discontinuous reception, DRX, cycle comprised within the determined paging window of the eDRX cycle, and perform at least one action based at least on the determined paging window of the eDRX cycle. According to one or more embodiments of this aspect, the at least one measurement scaling factor is based on a relation between the reference signal periodicity and the DRX cycle. According to one or more embodiments of this aspect, the at least one measurement scaling factor is based on a beam sweeping factor that defines a number of beam sweeps needed by the wireless device to determine a direction of arrival of signals, the beam sweeping factor being based on the DRX cycle. According to one or more embodiments of this aspect, the at least one measurement scaling factor is based on a wireless power class that defines a maximum wireless output power supported by the wireless device for transmitting signals.

According to one or more embodiments of this aspect, the at least one action includes at least one of: verifying the determined paging window of the eDRX cycle, performing a measurement on a cell during the determined paging window of the eDRX cycle, and performing paging reception during the determined paging window of the eDRX cycle. According to one or more embodiments of this aspect, the at least one measurement scaling factor is configured to increase a number of DRX cycles compared to a preconfigured number of DRX cycles. According to one or more embodiments of this aspect, the reference signal periodicity is used to scale a measurement time of at least one measurement of at least one reference signal.

According to one or more embodiments of this aspect, the at least one reference signal includes at least one of a synchronization signal and physical broadcast channel block, SSB, a synchronization signal and physical broadcast channel block measurement timing configuration, SMTC, positioning reference signal, PRS, and channel state information reference signal, CSI-RS. According to one or more embodiments of this aspect, the processing circuitry is further configured to: receive a configured paging window value from the network node, compare the configured paging window value to a value of the determined paging window of the eDRX cycle, and the performing of the at least one action being based at least on the comparison. According to one or more embodiments of this aspect, the at least one action includes one of: determining that performing at least one measurement on at least one cell during the determined paging window of the eDRX cycle is not expected by the network node, determining that paging from the network node is not expected during the determined paging window of the eDRX cycle, determining that performing at least one measurement on at least one cell during the determined paging window of the eDRX cycle is expected by the network node, and determining that paging from the network node is expected during the determined paging window of the eDRX cycle.

According to one or more embodiments of this aspect, the comparison indicates that the configured paging window value is one of equal to the value of the determined paging window of the eDRX cycle, greater than the value of the determined paging window of the eDRX cycle, and less than the value of the determined paging window of the eDRX cycle. According to one or more embodiments of this aspect, the at least one action includes determining whether to perform measurements on at least one cell during the determined paging window of the eDRX cycle based on the comparison indicating that the configured paging window value is one of: equal to the value of the determined paging window of the eDRX cycle, and greater than the value of the determined paging window of the eDRX cycle. According to one or more embodiments of this aspect, the eDRX cycle is used by the wireless device (22) when operating in a low activity state. According to one or more embodiments of this aspect, the reference signal periodicity comprises at least one of a SSB periodicity, SMTC periodicity, PRS periodicity and CSI-RS periodicity.

According to another aspect of the present disclosure, a network node is provided. The network node includes processing circuitry configured to: determine a paging window of an extended discontinuous reception, eDRX, cycle of a wireless device based on at least one measurement scaling factor where the at least one measurement scaling factor is based on at least one of a reference signal periodicity and a discontinuous reception, DRX, cycle comprised within the determined paging window of the eDRX cycle, and perform at least one action based at least on the determined paging window of the eDRX cycle.

According to one or more embodiments of this aspect, the at least one measurement scaling factor is based on a relation between the reference signal periodicity and the DRX cycle. According to one or more embodiments of this aspect, the at least one measurement scaling factor is based on a beam sweeping factor that defines a number of beam sweeps needed by the wireless device to determine a direction of arrival of signals, the beam sweeping factor being based on the DRX cycle. According to one or more embodiments of this aspect, the at least one measurement scaling factor is based on a wireless power class that defines a maximum wireless output power supported by the wireless device for transmitting signals.

According to one or more embodiments of this aspect, the at least one action includes at least one of verifying the determined paging window of the eDRX cycle, cause transmission of at least one reference signal for the wireless device to perform a measurement on a cell during the determined paging window of the eDRX cycle, and cause transmission of paging during the determined paging window of the eDRX cycle. According to one or more embodiments of this aspect, the at least one measurement scaling factor is configured to increase a number of DRX cycles compared to a preconfigured number of DRX cycles. According to one or more embodiments of this aspect, the reference signal periodicity is used to scale a measurement time of at least one measurement of at least one reference signal.

According to one or more embodiments of this aspect, the at least one reference signal includes at least one of a synchronization signal and physical broadcast channel block, SSB, a synchronization signal and physical broadcast channel block measurement timing configuration, SMTC, positioning reference signal, PRS, and channel state information reference signal, CSI-RS. According to one or more embodiments of this aspect, the processing circuitry is further configured to: configure the wireless device with a configured paging window value, compare the configured paging window value to a value of the determined paging window of the eDRX cycle, and the performing of the at least one action being based at least on the comparison.

According to one or more embodiments of this aspect, the at least one action includes one of determining that the wireless device is not expecting to perform at least one measurement on at least one cell during the determined paging window of the eDRX cycle; determining that the wireless device is not expecting to receive paging from the network node during the determined paging window of the eDRX cycle; determining that the wireless device is expecting to perform at least one measurement on at least one cell during the determined paging window of the eDRX cycle; and determining that the wireless device is expecting to receive paging from the network node during the determined paging window of the eDRX cycle. According to one or more embodiments of this aspect, the comparison indicates that the configured paging window value is one of: equal to the value of the determined paging window of the eDRX cycle, greater than the value of the determined paging window of the eDRX cycle, and less than the value of the determined paging window of the eDRX cycle. According to one or more embodiments of this aspect, the at least one action includes determining whether the wireless device is to perform measurements on at least one cell during the determined paging window of the eDRX cycle based on the comparison indicating that the configured paging window value is one of: equal to the value of the determined paging window of the eDRX cycle; and greater than the value of the determined paging window of the eDRX cycle.

According to one or more embodiments of this aspect, the eDRX cycle is used when the wireless device is operating in a low activity state. According to one or more embodiments of this aspect, the reference signal periodicity comprises at least one of a SSB periodicity, SMTC periodicity, PRS periodicity and CSI-RS periodicity.

According to another aspect of the present disclosure, a method implemented by a wireless device is provided. A paging window of an extended discontinuous reception, eDRX, cycle for the wireless device is determined based on at least one measurement scaling factor where the at least one measurement scaling factor is based on at least one of a reference signal periodicity and a discontinuous reception, DRX, cycle comprised within the determined paging window of the eDRX cycle. At least one action is performed based at least on the determined paging window of the eDRX cycle.

According to one or more embodiments of this aspect, the at least one reference signal includes at least one of a synchronization signal and physical broadcast channel block, SSB, a synchronization signal and physical broadcast channel block measurement timing configuration, SMTC, positioning reference signal, PRS, and channel state information reference signal, CSI-RS. According to one or more embodiments of this aspect, a configured paging window value is received from the network node, the configured paging window value is compared to a value of the determined paging window of the eDRX cycle, and the performing of the at least one action being based at least on the comparison. According to one or more embodiments of this aspect, the at least one action includes one of: determining that performing at least one measurement on at least one cell during the determined paging window of the eDRX cycle is not expected by the network node, determining that paging from the network node is not expected during the determined paging window of the eDRX cycle, determining that performing at least one measurement on at least one cell during the determined paging window of the eDRX cycle is expected by the network node, and determining that paging from the network node is expected during the determined paging window of the eDRX cycle.

According to one or more embodiments of this aspect, the comparison indicates that the configured paging window value is one of: equal to the value of the determined paging window of the eDRX cycle, greater than the value of the determined paging window of the eDRX cycle, and less than the value of the determined paging window of the eDRX cycle. According to one or more embodiments of this aspect, the at least one action includes determining whether to perform measurements on at least one cell during the determined paging window of the eDRX cycle based on the comparison indicating that the configured paging window value is one of: equal to the value of the determined paging window of the eDRX cycle, and greater than the value of the determined paging window of the eDRX cycle. According to one or more embodiments of this aspect, the eDRX cycle is used by the wireless device when operating in a low activity state. According to one or more embodiments of this aspect, the reference signal periodicity comprises at least one of a SSB periodicity, SMTC periodicity, PRS periodicity and CSI-RS periodicity.

According to another aspect of the present disclosure, a method implemented by a network node is provided. A paging window of an extended discontinuous reception, eDRX, cycle of a wireless device is determined based on at least one measurement scaling factor where the at least one measurement scaling factor is based on at least one of a reference signal periodicity and a discontinuous reception, DRX, cycle comprised within the determined paging window of the eDRX cycle. At least one action is performed based at least on the determined paging window of the eDRX cycle.

According to one or more embodiments of this aspect, the at least one action includes at least one of: verifying the determined paging window of the eDRX cycle; cause transmission of at least one reference signal for the wireless device to perform a measurement on a cell during the determined paging window of the eDRX cycle; and cause transmission of paging during the determined paging window of the eDRX cycle. According to one or more embodiments of this aspect, the at least one measurement scaling factor is configured to increase a number of DRX cycles compared to a preconfigured number of DRX cycles. According to one or more embodiments of this aspect, the reference signal periodicity is used to scale a measurement time of at least one measurement of at least one reference signal.

According to one or more embodiments of this aspect, the at least one reference signal includes at least one of a synchronization signal and physical broadcast channel block, SSB, a synchronization signal and physical broadcast channel block measurement timing configuration, SMTC, positioning reference signal, PRS, and channel state information reference signal, CSI-RS. According to one or more embodiments of this aspect, the wireless device is configured with a configured paging window value, the configured paging window value is compared to a value of the determined paging window of the eDRX cycle, and the performing of the at least one action is based at least on the comparison.

According to one or more embodiments of this aspect, the at least one action includes one of: determining that the wireless device is not expecting to perform at least one measurement on at least one cell during the determined paging window of the eDRX cycle, determining that the wireless device is not expecting to receive paging from the network node during the determined paging window of the eDRX cycle, determining that the wireless device is expecting to perform at least one measurement on at least one cell during the determined paging window of the eDRX cycle, and determining that the wireless device is expecting to receive paging from the network node during the determined paging window of the eDRX cycle. According to one or more embodiments of this aspect, the comparison indicates that the configured paging window value is one of: equal to the value of the determined paging window of the eDRX cycle, greater than the value of the determined paging window of the eDRX cycle, and less than the value of the determined paging window of the eDRX cycle. According to one or more embodiments of this aspect, the at least one action includes determining whether the wireless device is to perform measurements on at least one cell during the determined paging window of the eDRX cycle based on the comparison indicating that the configured paging window value is one of: equal to the value of the determined paging window of the eDRX cycle, and greater than the value of the determined paging window of the eDRX cycle.

BRIEF DESCRIPTION OF THE DRAWINGS

A more complete understanding of the present embodiments, and the attendant advantages and features thereof, will be more readily understood by reference to the following detailed description when considered in conjunction with the accompanying drawings wherein:

FIG. l is a diagram of a DRX cycle illustrating on and off durations;

FIG. 2 is a diagram of DRX cycle operation illustrating different DRX related parameters;

FIG. 3 is a diagram of a DRX cycle illustrating variation in on and off durations due to wireless device receiver activity;

FIG. 4 is a diagram of a H-SFN cycle;

FIG. 5 is a diagram of a relation between H-SFN, paging time window and eDRX periodicity;

FIG. 6 is a diagram of Np number of DRX cycles within PTW of the configured eDRX cycle;

FIG. 7 is a schematic diagram of an example network architecture illustrating a communication system connected via an intermediate network to a host computer according to the principles in the present disclosure;

FIG. 8 is a block diagram of a host computer communicating via a network node with a wireless device over an at least partially wireless connection according to some embodiments of the present disclosure;

FIG. 9 is a flowchart illustrating example methods implemented in a communication system including a host computer, a network node and a wireless device for executing a client application at a wireless device according to some embodiments of the present disclosure;

FIG. 10 is a flowchart illustrating example methods implemented in a communication system including a host computer, a network node and a wireless device for receiving user data at a wireless device according to some embodiments of the present disclosure;

FIG. 11 is a flowchart illustrating example methods implemented in a communication system including a host computer, a network node and a wireless device for receiving user data from the wireless device at a host computer according to some embodiments of the present disclosure;

FIG. 12 is a flowchart illustrating example methods implemented in a communication system including a host computer, a network node and a wireless device for receiving user data at a host computer according to some embodiments of the present disclosure;

FIG. 13 is a flowchart of an example process in a network node according to some embodiments of the present disclosure;

FIG. 14 is a flowchart of another example process in a network node according to some embodiments of the present disclosure;

FIG. 15 is a flowchart of an example process in a wireless device according to some embodiments of the present disclosure; and

FIG. 16 is a flowchart of another example process in a wireless device according to some embodiments of the present disclosure.

DETAILED DESCRIPTION

As described above, there are currently no measurement procedures to support NR specific mobility procedures when eDRX is used. Therefore, new NR measurement procedures are needed to support eDRX. This is to ensure that the use of eDRX does not degrade the NR mobility performance, while being able to provide sufficient wireless device power saving.

One or more embodiments of the instant disclosure, solve one or more problems with existing system at least in part by providing measurement procedures to support eDRX that does not degrade the NR mobility performance while still being able to provide sufficient wireless device power savings.

Before describing in detail example embodiments, it is noted that the embodiments reside primarily in combinations of apparatus components and processing steps related to procedures for supporting extended discontinuous reception (eDRX). Accordingly, components have been represented where appropriate by conventional symbols in the drawings, showing only those specific details that are pertinent to understanding the embodiments so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein. Like numbers refer to like elements throughout the description.

As used herein, relational terms, such as “first” and “second,” “top” and “bottom,” and the like, may be used solely to distinguish one entity or element from another entity or element without necessarily requiring or implying any physical or logical relationship or order between such entities or elements. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the concepts described herein. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises,” “comprising,” “includes” and/or “including” when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

In embodiments described herein, the joining term, “in communication with” and the like, may be used to indicate electrical or data communication, which may be accomplished by physical contact, induction, electromagnetic radiation, radio signaling, infrared signaling or optical signaling, for example. One having ordinary skill in the art will appreciate that multiple components may interoperate and modifications and variations are possible of achieving the electrical and data communication. In some embodiments described herein, the term “coupled,” “connected,” and the like, may be used herein to indicate a connection, although not necessarily directly, and may include wired and/or wireless connections.

The term “node” is used herein which can be a network node or a wireless device.

The term “network node” used herein can be any kind of network node comprised in a radio network which may further comprise any of base station (BS), radio base station, base transceiver station (BTS), base station controller (BSC), radio network controller (RNC), g Node B (gNB), evolved Node B (eNB or eNodeB), MeNb, SeNB, Node B, multi-standard radio (MSR) radio node such as MSR BS, multi-cell/multicast coordination entity (MCE), location measurement unit (LMU), integrated access and backhaul (IAB) node, central unit (e.g., in a gNB), distributed unit (e.g., in a gNB), baseband unit, centralized baseband, C-RAN, network controller, relay node, donor node controlling relay, radio access point (AP), transmission points, transmission nodes, Remote Radio Unit (RRU) Remote Radio Head (RRH), a core network node (e.g., mobile management entity (MME), MSC, etc., Operations and Maintenance (O&M), Operations Support Systems (OSS), selforganizing network (SON) node, a coordinating node, positioning node (e.g., Evolved-Serving Mobile Location Centre (E-SMLC)), Minimization Drive Test (MDT) node, etc.), an external node (e.g., 3rd party node, a node external to the current network), nodes in distributed antenna system (DAS), a spectrum access system (SAS) node, an element management system (EMS), etc. The network node may also comprise test equipment. The term “radio node” used herein may be used to also denote a wireless device (WD) or a radio network node.

In some embodiments, the non-limiting terms wireless device (WD) or user equipment (UE) are used interchangeably. The WD herein can be any type of wireless device capable of communicating with a network node or another WD over radio signals. The WD may also be a radio communication device, target device, device to device (D2D) WD, machine type WD or WD capable of machine to machine communication (M2M), low-cost and/or low-complexity WD, a sensor equipped with WD, Tablet, mobile terminals, smart phone, laptop embedded equipment (LEE), laptop mounted equipment (LME), USB dongles, Customer Premises Equipment (CPE), an Internet of Things (loT) device, or a Narrowband loT (NB-IOT) device, etc.

The term radio access technology, or RAT, may refer to any RAT, e.g., Universal Mobile Telecommunications Service (UMTS) Terrestrial Radio Access UTRA, Evolved-UTRA (E-UTRA), narrow band internet of things (NB-IoT), Wireless Fidelity (WiFi), Bluetooth, next generation RAT, New Radio (NR), 4G, 5G, etc. Any of the equipment denoted by the term node, network node or radio network node may be capable of supporting a single or multiple RATs.

The term signal or radio signal used herein can be any physical signal or physical channel. Examples of DL physical signals are reference signal (RS) such as Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), CSI-RS, Demodulation Reference Signal (DMRS) signals in SS/PBCH block (SSB), discovery reference signal (DRS), CRS, PRS, etc. RS may be periodic, e.g., RS occasion carrying one or more RSs may occur with a certain periodicity, e.g., 20 ms, 40 ms etc. The RS may also be aperiodic. Each SSB carries NR-PSS, NR-SSS and NR-PBCH in 4 successive symbols. One or multiple SSBs are transmitted in one SSB burst which is repeated with a certain periodicity, e.g., 5 ms, 10 ms, 20 ms, 40 ms, 80 ms and 160 ms. The wireless device is configured with information about SSB on cells of certain carrier frequency by one or more SS/PBCH block Measurement Timing Configuration (SMTC) configurations. The SMTC configuration includes parameters such as SMTC periodicity (T_SMTC), SMTC occasion length in time or duration, SMTC time offset with respect to reference time (e.g., serving cell’s System Frame Number (SFN)), etc. Therefore, SMTC occasion may also occur with certain periodicity, e.g., 5 ms, 10 ms, 20 ms, 40 ms, 80 ms and 160 ms. Examples of UL physical signals are reference signal such as SRS, DMRS, etc. The term physical channel refers to any channel carrying higher layer information, e.g., data, control, etc. Examples of physical channels are PBCH, NPBCH, PDCCH, PDSCH, shortened PDCCH (sPDCCH), shortened PDSCH (sPDSCH), sPUCCH, sPUSCH, MPDCCH, NPDCCH, NPDSCH, E-PDCCH, PUSCH, PUCCH, NPUSCH, etc.

Also, in some embodiments the generic term “radio network node” is used. It can be any kind of a radio network node which may comprise any of base station, radio base station, base transceiver station, base station controller, network controller, RNC, evolved Node B (eNB), Node B, gNB, Multi-cell/multicast Coordination Entity (MCE), IAB node, relay node, access point, radio access point, Remote Radio Unit (RRU), Remote Radio Head (RRH).

The term time resource used herein may correspond to any type of physical resource or radio resource expressed in terms of length of time. Examples of time resources are: symbol, time slot, subframe, radio frame, TTI, interleaving time, slot, sub-slot, mini-slot, etc.

In some embodiments, the general description elements in the form of “one of A and B” corresponds to A or B. In some embodiments, at least one of A and B corresponds to A, B or AB, or to one or more of A and B. In some embodiments, at least one of A, B and C corresponds to one or more of A, B and C, and/or A, B, C or a combination thereof.

Note that although terminology from one particular wireless system, such as, for example, 3GPP LTE and/or New Radio (NR), may be used in this disclosure, this should not be seen as limiting the scope of the disclosure to only the aforementioned system. Other wireless systems, including without limitation Wide Band Code Division Multiple Access (WCDMA), Worldwide Interoperability for Microwave Access (WiMax), Ultra Mobile Broadband (UMB) and Global System for Mobile Communications (GSM), may also benefit from exploiting the ideas covered within this disclosure.

Note further, that functions described herein as being performed by a wireless device or a network node may be distributed over a plurality of wireless devices and/or network nodes. In other words, it is contemplated that the functions of the network node and wireless device described herein are not limited to performance by a single physical device and, in fact, can be distributed among several physical devices.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. Some embodiments provide procedures for supporting extended discontinuous reception (eDRX). One or more embodiments described herein relate to the following scenario description:

The wireless device is configured with at least one eDRX cycle (e.g., 10.24 seconds or longer) via higher layers, e.g., via core network such as via NAS signaling. The wireless device is further configured with at least one DRX cycle (e.g., 1.28 seconds) via higher layers, e.g., via a network node such as via RRC signaling. The wireless device may be operating in a low activity state. Examples of low activity states include one or more of RRC IDLE state, RRC INACTIVE state, etc. The paging window occurs once every eDRX cycle as shown in FIG. 6. Within each paging window, the wireless device is configured with certain number of DRX cycles (Np) as also shown in FIG. 6. The term paging window may also be called paging time window (PTW), paging transmission window, etc. The term PTW is used hereinafter for consistency.

Referring again to the drawing figures, in which like elements are referred to by like reference numerals, there is shown in FIG. 7 a schematic diagram of a communication system 10, according to an embodiment, such as a 3 GPP -type cellular network that may support standards such as LTE and/or NR (5G), which comprises an access network 12, such as a radio access network, and a core network 14. The access network 12 comprises a plurality of network nodes 16a, 16b, 16c (referred to collectively as network nodes 16), such as NBs, eNBs, gNBs or other types of wireless access points, each defining a corresponding coverage area 18a, 18b, 18c (referred to collectively as coverage areas 18). Each network node 16a, 16b, 16c is connectable to the core network 14 over a wired or wireless connection 20. While network node 16 is illustrated as part of access network 12, in one or more embodiments, one or more network nodes 16 may be part of core network 14. A first wireless device (WD) 22a located in coverage area 18a is configured to wirelessly connect to, or be paged by, the corresponding network node 16a. A second WD 22b in coverage area 18b is wirelessly connectable to the corresponding network node 16b. While a plurality of WDs 22a, 22b (collectively referred to as wireless devices 22) are illustrated in this example, the disclosed embodiments are equally applicable to a situation where a sole WD is in the coverage area or where a sole WD is connecting to the corresponding network node 16. Note that although only two WDs 22 and three network nodes 16 are shown for convenience, the communication system may include many more WDs 22 and network nodes 16.

Also, it is contemplated that a WD 22 can be in simultaneous communication and/or configured to separately communicate with more than one network node 16 and more than one type of network node 16. For example, a WD 22 can have dual connectivity with a network node 16 that supports LTE and the same or a different network node 16 that supports NR. As an example, WD 22 can be in communication with an eNB for LTE/E-UTRAN and a gNB for NR/NG-RAN.

The communication system 10 may itself be connected to a host computer 24, which may be embodied in the hardware and/or software of a standalone server, a cloud-implemented server, a distributed server or as processing resources in a server farm. The host computer 24 may be under the ownership or control of a service provider, or may be operated by the service provider or on behalf of the service provider. The connections 26, 28 between the communication system 10 and the host computer 24 may extend directly from the core network 14 to the host computer 24 or may extend via an optional intermediate network 30. The intermediate network 30 may be one of, or a combination of more than one of, a public, private or hosted network. The intermediate network 30, if any, may be a backbone network or the Internet. In some embodiments, the intermediate network 30 may comprise two or more sub-networks (not shown).

The communication system of FIG. 7 as a whole enables connectivity between one of the connected WDs 22a, 22b and the host computer 24. The connectivity may be described as an over-the-top (OTT) connection. The host computer 24 and the connected WDs 22a, 22b are configured to communicate data and/or signaling via the OTT connection, using the access network 12, the core network 14, any intermediate network 30 and possible further infrastructure (not shown) as intermediaries. The OTT connection may be transparent in the sense that at least some of the participating communication devices through which the OTT connection passes are unaware of routing of uplink and downlink communications. For example, a network node 16 may not or need not be informed about the past routing of an incoming downlink communication with data originating from a host computer 24 to be forwarded (e.g., handed over) to a connected WD 22a. Similarly, the network node 16 need not be aware of the future routing of an outgoing uplink communication originating from the WD 22a towards the host computer 24.

A network node 16 is configured to include a window unit 32 which is configured to perform one or more network node 16 functions as described herein such as with respect to procedures for supporting eDRX. A wireless device 22 is configured to include an eDRX unit 34 which is configured to perform one or more wireless device 22 functions as described herein such as with respect to procedures for supporting eDRX.

Example implementations, in accordance with an embodiment, of the WD 22, network node 16 and host computer 24 discussed in the preceding paragraphs will now be described with reference to FIG. 8. In a communication system 10, a host computer 24 comprises hardware (HW) 38 including a communication interface 40 configured to set up and maintain a wired or wireless connection with an interface of a different communication device of the communication system 10. The host computer 24 further comprises processing circuitry 42, which may have storage and/or processing capabilities. The processing circuitry 42 may include a processor 44 and memory 46. In particular, in addition to or instead of a processor, such as a central processing unit, and memory, the processing circuitry 42 may comprise integrated circuitry for processing and/or control, e.g., one or more processors and/or processor cores and/or FPGAs (Field Programmable Gate Array) and/or ASICs (Application Specific Integrated Circuitry) adapted to execute instructions. The processor 44 may be configured to access (e.g., write to and/or read from) memory 46, which may comprise any kind of volatile and/or nonvolatile memory, e.g., cache and/or buffer memory and/or RAM (Random Access Memory) and/or ROM (Read- Only Memory) and/or optical memory and/or EPROM (Erasable Programmable Read-Only Memory).

Processing circuitry 42 may be configured to control any of the methods and/or processes described herein and/or to cause such methods, and/or processes to be performed, e.g., by host computer 24. Processor 44 corresponds to one or more processors 44 for performing host computer 24 functions described herein. The host computer 24 includes memory 46 that is configured to store data, programmatic software code and/or other information described herein. In some embodiments, the software 48 and/or the host application 50 may include instructions that, when executed by the processor 44 and/or processing circuitry 42, causes the processor 44 and/or processing circuitry 42 to perform the processes described herein with respect to host computer 24. The instructions may be software associated with the host computer 24.

The software 48 may be executable by the processing circuitry 42. The software 48 includes a host application 50. The host application 50 may be operable to provide a service to a remote user, such as a WD 22 connecting via an OTT connection 52 terminating at the WD 22 and the host computer 24. In providing the service to the remote user, the host application 50 may provide user data which is transmitted using the OTT connection 52. The “user data” may be data and information described herein as implementing the described functionality. In one embodiment, the host computer 24 may be configured for providing control and functionality to a service provider and may be operated by the service provider or on behalf of the service provider. The processing circuitry 42 of the host computer 24 may enable the host computer 24 to observe, monitor, control, transmit to and/or receive from the network node 16 and or the wireless device 22. The processing circuitry 42 of the host computer 24 may include an information unit 54 configured to enable the service provider to store, analyze, provide, transmit, receive, forward, relay, etc., information related to procedures for supporting eDRX.

The communication system 10 further includes a network node 16 provided in a communication system 10 and including hardware 58 enabling it to communicate with the host computer 24 and with the WD 22. The hardware 58 may include a communication interface 60 for setting up and maintaining a wired or wireless connection with an interface of a different communication device of the communication system 10, as well as a radio interface 62 for setting up and maintaining at least a wireless connection 64 with a WD 22 located in a coverage area 18 served by the network node 16. The radio interface 62 may be formed as or may include, for example, one or more Radio Frequency (RF) transmitters, one or more RF receivers, and/or one or more RF transceivers. The communication interface 60 may be configured to facilitate a connection 66 to the host computer 24. The connection 66 may be direct or it may pass through a core network 14 of the communication system 10 and/or through one or more intermediate networks 30 outside the communication system 10.

In the embodiment shown, the hardware 58 of the network node 16 further includes processing circuitry 68. The processing circuitry 68 may include a processor 70 and a memory 72. In particular, in addition to or instead of a processor, such as a central processing unit, and memory, the processing circuitry 68 may comprise integrated circuitry for processing and/or control, e.g., one or more processors and/or processor cores and/or FPGAs (Field Programmable Gate Array) and/or ASICs (Application Specific Integrated Circuitry) adapted to execute instructions. The processor 70 may be configured to access (e.g., write to and/or read from) the memory 72, which may comprise any kind of volatile and/or nonvolatile memory, e.g., cache and/or buffer memory and/or RAM (Random Access Memory) and/or ROM (Read-Only Memory) and/or optical memory and/or EPROM (Erasable Programmable Read-Only Memory).

Thus, the network node 16 further has software 74 stored internally in, for example, memory 72, or stored in external memory (e.g., database, storage array, network storage device, etc.) accessible by the network node 16 via an external connection. The software 74 may be executable by the processing circuitry 68. The processing circuitry 68 may be configured to control any of the methods and/or processes described herein and/or to cause such methods, and/or processes to be performed, e.g., by network node 16. Processor 70 corresponds to one or more processors 70 for performing network node 16 functions described herein. The memory 72 is configured to store data, programmatic software code and/or other information described herein. In some embodiments, the software 74 may include instructions that, when executed by the processor 70 and/or processing circuitry 68, causes the processor 70 and/or processing circuitry 68 to perform the processes described herein with respect to network node 16. For example, processing circuitry 68 of the network node 16 may include window unit 32 configured to perform one or more network node 16 functions as described herein such as with respect to procedures for supporting eDRX. The communication system 10 further includes the WD 22 already referred to. The WD 22 may have hardware 80 that may include a radio interface 82 configured to set up and maintain a wireless connection 64 with a network node 16 serving a coverage area 18 in which the WD 22 is currently located. The radio interface 82 may be formed as or may include, for example, one or more RF transmitters, one or more RF receivers, and/or one or more RF transceivers.

The hardware 80 of the WD 22 further includes processing circuitry 84. The processing circuitry 84 may include a processor 86 and memory 88. In particular, in addition to or instead of a processor, such as a central processing unit, and memory, the processing circuitry 84 may comprise integrated circuitry for processing and/or control, e.g., one or more processors and/or processor cores and/or FPGAs (Field Programmable Gate Array) and/or ASICs (Application Specific Integrated Circuitry) adapted to execute instructions. The processor 86 may be configured to access (e.g., write to and/or read from) memory 88, which may comprise any kind of volatile and/or nonvolatile memory, e.g., cache and/or buffer memory and/or RAM (Random Access Memory) and/or ROM (Read-Only Memory) and/or optical memory and/or EPROM (Erasable Programmable Read-Only Memory).

Thus, the WD 22 may further comprise software 90, which is stored in, for example, memory 88 at the WD 22, or stored in external memory (e.g., database, storage array, network storage device, etc.) accessible by the WD 22. The software 90 may be executable by the processing circuitry 84. The software 90 may include a client application 92. The client application 92 may be operable to provide a service to a human or non-human user via the WD 22, with the support of the host computer 24. In the host computer 24, an executing host application 50 may communicate with the executing client application 92 via the OTT connection 52 terminating at the WD 22 and the host computer 24. In providing the service to the user, the client application 92 may receive request data from the host application 50 and provide user data in response to the request data. The OTT connection 52 may transfer both the request data and the user data. The client application 92 may interact with the user to generate the user data that it provides.

The processing circuitry 84 may be configured to control any of the methods and/or processes described herein and/or to cause such methods, and/or processes to be performed, e.g., by WD 22. The processor 86 corresponds to one or more processors 86 for performing WD 22 functions described herein. The WD 22 includes memory 88 that is configured to store data, programmatic software code and/or other information described herein. In some embodiments, the software 90 and/or the client application 92 may include instructions that, when executed by the processor 86 and/or processing circuitry 84, causes the processor 86 and/or processing circuitry 84 to perform the processes described herein with respect to WD 22. For example, the processing circuitry 84 of the wireless device 22 may include an eDRX unit 34 configured to perform one or more wireless device 22 functions as described herein such as with respect to procedures for supporting eDRX.

In some embodiments, the inner workings of the network node 16, WD 22, and host computer 24 may be as shown in FIG. 8 and independently, the surrounding network topology may be that of FIG. 7.

In FIG. 8, the OTT connection 52 has been drawn abstractly to illustrate the communication between the host computer 24 and the wireless device 22 via the network node 16, without explicit reference to any intermediary devices and the precise routing of messages via these devices. Network infrastructure may determine the routing, which it may be configured to hide from the WD 22 or from the service provider operating the host computer 24, or both. While the OTT connection 52 is active, the network infrastructure may further take decisions by which it dynamically changes the routing (e.g., on the basis of load balancing consideration or reconfiguration of the network).

The wireless connection 64 between the WD 22 and the network node 16 is in accordance with the teachings of the embodiments described throughout this disclosure. One or more of the various embodiments improve the performance of OTT services provided to the WD 22 using the OTT connection 52, in which the wireless connection 64 may form the last segment. More precisely, the teachings of some of these embodiments may improve the data rate, latency, and/or power consumption and thereby provide benefits such as reduced user waiting time, relaxed restriction on file size, better responsiveness, extended battery lifetime, etc.

In some embodiments, a measurement procedure may be provided for the purpose of monitoring data rate, latency and other factors on which the one or more embodiments improve. There may further be an optional network functionality for reconfiguring the OTT connection 52 between the host computer 24 and WD 22, in response to variations in the measurement results. The measurement procedure and/or the network functionality for reconfiguring the OTT connection 52 may be implemented in the software 48 of the host computer 24 or in the software 90 of the WD 22, or both. In embodiments, sensors (not shown) may be deployed in or in association with communication devices through which the OTT connection 52 passes; the sensors may participate in the measurement procedure by supplying values of the monitored quantities exemplified above, or supplying values of other physical quantities from which software 48, 90 may compute or estimate the monitored quantities. The reconfiguring of the OTT connection 52 may include message format, retransmission settings, preferred routing etc.; the reconfiguring need not affect the network node 16, and it may be unknown or imperceptible to the network node 16. Some such procedures and functionalities may be known and practiced in the art. In certain embodiments, measurements may involve proprietary WD signaling facilitating the host computer’s 24 measurements of throughput, propagation times, latency and the like. In some embodiments, the measurements may be implemented in that the software 48, 90 causes messages to be transmitted, in particular empty or ‘dummy’ messages, using the OTT connection 52 while it monitors propagation times, errors, etc.

Thus, in some embodiments, the host computer 24 includes processing circuitry 42 configured to provide user data and a communication interface 40 that is configured to forward the user data to a cellular network for transmission to the WD 22. In some embodiments, the cellular network also includes the network node 16 with a radio interface 62. In some embodiments, the network node 16 is configured to, and/or the network node’s 16 processing circuitry 68 is configured to perform the functions and/or methods described herein for preparing/initiating/maintaining/supporting/ending a transmission to the WD 22, and/or preparing/terminating/maintaining/supporting/ending receipt of a transmission from the WD 22.

In some embodiments, the host computer 24 includes processing circuitry 42 and a communication interface 40 that is configured to receive user data originating from a transmission from a WD 22 to a network node 16. In some embodiments, the WD 22 is configured to, and/or comprises a radio interface 82 and/or processing circuitry 84 configured to perform the functions and/or methods described herein for preparing/initiating/maintaining/supporting/ending a transmission to the network node 16, and/or preparing/terminating/maintaining/supporting/ending receipt of a transmission from the network node 16.

Although FIGS. 7 and 8 show various “units” such as window unit 32, and eDRX unit 34 as being within a respective processor, it is contemplated that these units may be implemented such that a portion of the unit is stored in a corresponding memory within the processing circuitry. In other words, the units may be implemented in hardware or in a combination of hardware and software within the processing circuitry.

FIG. 9 is a flowchart illustrating an example method implemented in a communication system, such as, for example, the communication system of FIGS. 7 and 8, in accordance with one embodiment. The communication system may include a host computer 24, a network node 16 and a WD 22, which may be those described with reference to FIG. 8. In a first step of the method, the host computer 24 provides user data (Block SI 00). In an optional substep of the first step, the host computer 24 provides the user data by executing a host application, such as, for example, the host application 50 (Block SI 02). In a second step, the host computer 24 initiates a transmission carrying the user data to the WD 22 (Block SI 04). In an optional third step, the network node 16 transmits to the WD 22 the user data which was carried in the transmission that the host computer 24 initiated, in accordance with the teachings of the embodiments described throughout this disclosure (Block SI 06). In an optional fourth step, the WD 22 executes a client application, such as, for example, the client application 92, associated with the host application 50 executed by the host computer 24 (Block SI 08).

FIG. 10 is a flowchart illustrating an example method implemented in a communication system, such as, for example, the communication system of FIG. 7, in accordance with one embodiment. The communication system may include a host computer 24, a network node 16 and a WD 22, which may be those described with reference to FIGS. 7 and 8. In a first step of the method, the host computer 24 provides user data (Block SI 10). In an optional substep (not shown) the host computer 24 provides the user data by executing a host application, such as, for example, the host application 50. In a second step, the host computer 24 initiates a transmission carrying the user data to the WD 22 (Block SI 12). The transmission may pass via the network node 16, in accordance with the teachings of the embodiments described throughout this disclosure. In an optional third step, the WD 22 receives the user data carried in the transmission (Block SI 14).

FIG. 11 is a flowchart illustrating an example method implemented in a communication system, such as, for example, the communication system of FIG. 7, in accordance with one embodiment. The communication system may include a host computer 24, a network node 16 and a WD 22, which may be those described with reference to FIGS. 7 and 8. In an optional first step of the method, the WD 22 receives input data provided by the host computer 24 (Block SI 16). In an optional substep of the first step, the WD 22 executes the client application 92, which provides the user data in reaction to the received input data provided by the host computer 24 (Block SI 18). Additionally or alternatively, in an optional second step, the WD 22 provides user data (Block S120). In an optional substep of the second step, the WD provides the user data by executing a client application, such as, for example, client application 92 (Block S122). In providing the user data, the executed client application 92 may further consider user input received from the user. Regardless of the specific manner in which the user data was provided, the WD 22 may initiate, in an optional third substep, transmission of the user data to the host computer 24 (Block S124). In a fourth step of the method, the host computer 24 receives the user data transmitted from the WD 22, in accordance with the teachings of the embodiments described throughout this disclosure (Block S126).

FIG. 12 is a flowchart illustrating an example method implemented in a communication system, such as, for example, the communication system of FIG. 7, in accordance with one embodiment. The communication system may include a host computer 24, a network node 16 and a WD 22, which may be those described with reference to FIGS. 7 and 8. In an optional first step of the method, in accordance with the teachings of the embodiments described throughout this disclosure, the network node 16 receives user data from the WD 22 (Block S128). In an optional second step, the network node 16 initiates transmission of the received user data to the host computer 24 (Block S130). In a third step, the host computer 24 receives the user data carried in the transmission initiated by the network node 16 (Block SI 32).

FIG. 13 is a flowchart of an example process in a network node 16 according to some embodiments of the present disclosure. One or more blocks described herein may be performed by one or more elements of network node 16 such as by one or more of processing circuitry 68 (including the window unit 32), processor 70, radio interface 62 and/or communication interface 60. Network node 16 is configured to determine (Block SI 34) a paging window of an extended discontinuous reception, eDRX, cycle for the wireless device 22 based on at least one measurement scaling factor associated with the wireless device 22, as described herein. Network node 16 is configured to perform (Block SI 36) at least one action based at least on the determined paging window, as described herein.

According to one or more embodiments, the at least one measurement scaling factor is based on at least one of: a beam sweeping factor, a relation between the beam sweeping factor and a wireless power class, and a reference signal periodicity. According to one or more embodiments, the at least one action includes at least one of: configure the wireless device 22 with a paging window parameter (e.g., at least one of PTW start, PTW end and PTW length) based at least on the determined paging window, and cause transmission of a message during a paging window associated with the paging window parameter.

FIG. 14 is a flowchart of another example process in a network node 16 according to some embodiments of the present disclosure. One or more blocks described herein may be performed by one or more elements of network node 16 such as by one or more of processing circuitry 68 (including the window unit 32), processor 70, radio interface 62 and/or communication interface 60. Network node 16 is configured to determine (Block S138) a paging window of an extended discontinuous reception, eDRX, cycle of a wireless device based on at least one measurement scaling factor where the at least one measurement scaling factor is based on at least one of a reference signal periodicity and a discontinuous reception, DRX, cycle comprised within the determined paging window of the eDRX cycle, as described herein. Network node 16 is configured to perform (Block S140) at least one action based at least on the determined paging window of the eDRX cycle, as described herein.

According to one or more embodiments, the at least one measurement scaling factor is based on a relation between the reference signal periodicity and the DRX cycle. According to one or more embodiments, the at least one measurement scaling factor is based on a beam sweeping factor that defines a number of beam sweeps needed by the wireless device 22 to determine a direction of arrival of signals, the beam sweeping factor being based on the DRX cycle. According to one or more embodiments, the at least one measurement scaling factor is based on a wireless power class that defines a maximum wireless output power supported by the wireless device 22 for transmitting signals.

According to one or more embodiments, the at least one action includes at least one of: verifying the determined paging window of the eDRX cycle, cause transmission of at least one reference signal for the wireless device 22 to perform a measurement on a cell during the determined paging window of the eDRX cycle, and cause transmission of paging during the determined paging window of the eDRX cycle. According to one or more embodiments, the at least one measurement scaling factor is configured to increase a number of DRX cycles compared to a preconfigured number of DRX cycles. According to one or more embodiments, the reference signal periodicity is used to scale a measurement time of at least one measurement of at least one reference signal.

According to one or more embodiments, the at least one reference signal includes at least one of a synchronization signal and physical broadcast channel block, SSB, a synchronization signal and physical broadcast channel block measurement timing configuration, SMTC, positioning reference signal, PRS, and channel state information reference signal, CSI-RS. According to one or more embodiments, the processing circuitry 68 is further configured to: configure the wireless device 22 with a configured paging window value, compare the configured paging window value to a value of the determined paging window of the eDRX cycle, and the performing of the at least one action being based at least on the comparison.

According to one or more embodiments, the at least one action includes one of: determining that the wireless device 22 is not expecting to perform at least one measurement on at least one cell during the determined paging window of the eDRX cycle; determining that the wireless device 22 is not expecting to receive paging from the network node 16 during the determined paging window of the eDRX cycle; determining that the wireless device 22 is expecting to perform at least one measurement on at least one cell during the determined paging window of the eDRX cycle; and determining that the wireless device 22 is expecting to receive paging from the network node 16 during the determined paging window of the eDRX cycle. According to one or more embodiments, the comparison indicates that the configured paging window value is one of: equal to the value of the determined paging window of the eDRX cycle, greater than the value of the determined paging window of the eDRX cycle, and less than the value of the determined paging window of the eDRX cycle. According to one or more embodiments, the at least one action includes determining whether the wireless device 22 is to perform measurements on at least one cell during the determined paging window of the eDRX cycle based on the comparison indicating that the configured paging window value is one of: equal to the value of the determined paging window of the eDRX cycle; and greater than the value of the determined paging window of the eDRX cycle.

According to one or more embodiments, the eDRX cycle occurs during or is used when the wireless device 22 is operating in a low activity state. According to one or more embodiments, the reference signal periodicity comprises at least one of a SSB periodicity, SMTC periodicity, PRS periodicity and CSI-RS periodicity.

FIG. 15 is a flowchart of an example process in a wireless device 22 according to some embodiments of the present disclosure. One or more blocks described herein may be performed by one or more elements of wireless device 22 such as by one or more of processing circuitry 84 (including the eDRX unit 34), processor 86, radio interface 82. Wireless device 22 is configured to determine (Block S142) a paging window of an extended discontinuous reception, eDRX, cycle for the wireless device 22 based on at least one measurement scaling factor associated with the wireless device 22, as described herein. Wireless device 22 is configured to perform (Block S144) at least one action based at least on the determined paging window, as described herein. According to one or more embodiments, the at least one measurement scaling factor is based on at least one of: a beam sweeping factor, a relation between the beam sweeping factor and a wireless power class, and a reference signal periodicity. According to one or more embodiments, the at least one action includes at least one of verification of the paging window of the eDRX cycle, perform a measurement on a cell during the paging window, and perform paging reception during the paging window.

FIG. 16 is a flowchart of another example process in a wireless device 22 according to some embodiments of the present disclosure. One or more blocks described herein may be performed by one or more elements of wireless device 22 such as by one or more of processing circuitry 84 (including the eDRX unit 34), processor 86, radio interface 82 and/or communication interface 60. Wireless device 22 is configured to determine (Block S146) a paging window of an extended discontinuous reception, eDRX, cycle for the wireless device 22 based on at least one measurement scaling factor where the at least one measurement scaling factor is based on at least one of a reference signal periodicity and a discontinuous reception, DRX, cycle comprised within the determined paging window of the eDRX cycle, as described herein. For example, determining a paging window may include determining a length of the paging window. Wireless device 22 is configured to perform (Block S148) at least one action based at least on the determined paging window of the eDRX cycle, as described herein.

According to one or more embodiments, the at least one action includes at least one of: verifying the determined paging window of the eDRX cycle, performing a measurement on a cell during the determined paging window of the eDRX cycle, and performing paging reception during the determined paging window of the eDRX cycle. According to one or more embodiments, the at least one measurement scaling factor is configured to increase a number of DRX cycles compared to a preconfigured number of DRX cycles. According to one or more embodiments, the reference signal periodicity is used to scale a measurement time of at least one measurement of at least one reference signal.

According to one or more embodiments, the at least one reference signal includes at least one of a synchronization signal and physical broadcast channel block, SSB, a synchronization signal and physical broadcast channel block measurement timing configuration, SMTC, positioning reference signal, PRS, and channel state information reference signal, CSI-RS. According to one or more embodiments, the processing circuitry 84 is further configured to: receive a configured paging window value from the network node 16, compare the configured paging window value to a value of the determined paging window of the eDRX cycle, and the performing of the at least one action being based at least on the comparison. According to one or more embodiments, the at least one action includes one of: determining that performing at least one measurement on at least one cell during the determined paging window of the eDRX cycle is not expected by the network node 16, determining that paging from the network node 16 is not expected during the determined paging window of the eDRX cycle, determining that performing at least one measurement on at least one cell during the determined paging window of the eDRX cycle is expected by the network node 16, and determining that paging from the network node 16 is expected during the determined paging window of the eDRX cycle.

According to one or more embodiments, the comparison indicates that the configured paging window value is one of equal to the value of the determined paging window of the eDRX cycle, greater than the value of the determined paging window of the eDRX cycle, and less than the value of the determined paging window of the eDRX cycle. According to one or more embodiments, the at least one action includes determining whether to perform measurements on at least one cell during the determined paging window of the eDRX cycle based on the comparison indicating that the configured paging window value is one of: equal to the value of the determined paging window of the eDRX cycle, and greater than the value of the determined paging window of the eDRX cycle. According to one or more embodiments, the eDRX cycle is used by the wireless device 22 when operating in a low activity state. According to one or more embodiments, the reference signal periodicity comprises at least one of a SSB periodicity, SMTC periodicity, PRS periodicity and CSI-RS periodicity.

Having described the general process flow of arrangements of the disclosure and having provided examples of hardware and software arrangements for implementing the processes and functions of the disclosure, the sections below provide details and examples of arrangements for procedures for supporting eDRX. One or more network node 16 functions described below may be performed by one or more of processing circuitry 68, processor 70, window unit 32, radio interface 62, etc. One or more wireless device 22 functions described below may be performed by one or more of processing circuitry 84, processor 86, eDRX unit 34, radio interface 82, etc.

Some embodiments provide procedures for supporting eDRX, as described herein.

Example method in wireless device 22 of determining and using PTW based on measurement scaling factor for radio operations

The wireless device 22 that is configured with an eDRX cycle and DRX cycle, determines PTW associated with eDRX based on one or more measurement scaling factor (K), and uses the determined PTW for performing one or more radio operations. The determination of PTW may be performed upon being configured with the eDRX cycle and DRX cycle. These steps are described below. In one or more embodiments, DRX cycle and DRX cycle length are used interchangeably.

Determination of PTW

The wireless device 22 may use one or more rules to determine the PTW (e.g., determine length of the PTW of the eDRX cycle). The one or more rules may relate PTW with one or more measurement scaling factors (K). Therefore, the PTW is adapted to K and is therefore determined by the wireless device 22 based on at least one value of K. The rules may be pre-defined or configured by the network node. The parameter K (e.g., K e {ki, k2, k3,...kN) may be used by the wireless device 22 for adapting measurement time for one or more measurements. Examples of measurement time are serving cell evaluation time, neighbor cell evaluation time, measurement period of a measurement (e.g., RSRP, RSRQ, etc.), cell detection time, cell selection time, cell reselection time, etc. The measurement time may also be called a measurement requirement or requirements or a performance requirement.

Examples of scaling factors include beamsweeping, wireless device power class, relation between beamsweeping and wireless device power class, RS periodicity (Trs), relation between Trs and DRX cycle, etc. where, for example, the DRX cycle is comprised within the paging window of the eDRX cycle and/or is configured for the wireless device 22 within the paging window of the eDRX cycle.

The PTW length or duration (T_PTW) can be expressed in terms of suitable time units or value(s) that denote length, e.g., number of DRX cycles, number (Np) of minimum PTW period (Tmin). in slots, frames, SFN cycles, etc. Examples of T_min are 0.64 second, 1.28 second, etc.

The PTW length or duration (T_PTW) as determined by the wireless device and may be based on or is defined as function f(.) of one or more measurement scaling factors (K) as described with examples below. Examples of functions are minimum, maximum, product, sum, difference, average, ceiling floor etc., of one or

more variables including at least K or combination of any two or more functions (e.g., the function is a combination of sum and product).

The determination of PTW length or duration is described below with several examples for different measurement scaling factors.

Example #1: PTW based on beam sweeping factor (kl) (e.g., one type of scaling factor)

In one example, the PTW length can be defined as function fl(.) of at least the beam sweeping factor (ki). In higher frequencies (e.g., mmwave, FR2, FR3, etc.) due to higher signal dispersion, the transmitted signals are beamformed, e.g., transmitted in terms of SSB beams for measurements. Therefore, the wireless device 22, before obtaining a measurement sample of a reference signal (e.g., SSB) from a cell on higher frequency (e.g., FR2), performs beam sweeping in different directions (e.g., between 2-8) to determine the direction of arrival of signals at the wireless device 22. The beam sweeping may also be called spatial beam sweeping or 3 -dimensional beam sweeping. The wireless device 22 then measures on the determined beam based on the beam sweeping. In one example, frequencies within frequency range 2 (FR2) are frequencies above certain threshold, e.g., 24 GHz or higher. In another example, the frequencies in FR2 may vary between 24 GHz to 52.6 GHz. In another example, frequencies in FR2 may vary between 24 GHz to 71 GHz.

The beam sweeping factor ki which in this example defines a number of beam sweeps needed by the wireless device 22 may further depend on the configured DRX cycle. The PTW length (T_PTW,J) for DRX cycle j using beam sweeping factor (k_1j) is expressed by the following general expression or function:

In one specific example, T_PTW,J, can be expressed as follows:

In another specific example, T_PTW,J, can be expressed as follows:

Where:

Tdrxj is a DRX cycle length of DRX cycle j. Examples of T_drx,j are: Tdrx,i=0.32 s, Tdrx, 2=0.64 S, Tdrx,2=1.28 s, Tdrx, 2=2.56 s etc. α_j is a variable associated with DRX cycle j . It may correspond to a number of DRX cycles needed for measurement on cell. In one example, α_j is different for different DRX cycles. In another example, α_j is same for two or more DRX cycles, e.g., α_j =2 for all DRX cycles.

The wireless device 22 may be required to evaluate the serving cell provided by network node 16 by measuring on its RS (e.g., SS-RSRP and SS-RSRQ) over certain number of DRX cycles (N_serv), e.g., take samples every Mth DRX cycle; in one example M=1, and in another example M=2. If the serving cell does not fulfill the cell selection criterion (e.g., serving cell signal strength and signal quality are not above respective thresholds) during serving cell evaluation time then the wireless device 22 initiates the measurements of all neighbor cells indicated by the serving cell (e.g., in system information).

A general example of the PTW length for serving cell evaluation in idle or inactive states is expressed in Table 1, below where:

T_edrx is eDRX cycle length of the configured eDRX cycle.

T_edrx min and T_edrx max are shortest eDRX cycle and are longest eDRX cycle respectively. In one example T_{edrx_ min}= 5.12 s and Tedrx max 10485.76 s.

Ndj is the minimum number of DRX cycle for serving cell evaluation for DRX cycle j. In one example Ndj is different for different DRX cycles. In another example Ndj is the same for two or more DRX cycles.

Table 1 : General example 1 of PTW length based on beamsweeping factor

(kij)

Another general example of the PTW length for serving cell evaluation in idle or inactive states is illustrated in Table 2. In this example, the PTW length is determined based on ceiling function.

Table 2: General example 2 of PTW length based on beamsweeping factor

(k_1j)

A specific example of the PTW length for serving cell evaluation in idle or inactive states is expressed in Table 3. In this example, the PTW length is determined based on ceiling function

for following specific examples of the parameters: α₁ = 4; α₂ = 4; α₃ = 2; α₄ =2

- Ndj = 2 for all DRX cycles.

T_{edrx, 1} ⁼ 0.32 s; T_drx,2 ⁼ 0.64 s; T_drx,3 ⁼ 1.28 s; T_drx,4 ⁼ 2.56 S - T_min = 1.28 second k₁₁ = 8; k₁₂ =5; k₁₃ = 4; k₁₄ = 3

Table 3: Specific example of PTW length based on beamsweeping factor (kij)

Example #2: PTW based on a relation between beam sweeping factor and wireless device 22 power class In another example, the PTW length can be defined as function f2(.) of at least a relation (k₂) between the beam sweeping factor (k₁) and the wireless device 22 (UE) power class. The scaling factor k2 may also be applied by the wireless device 22 for beam sweeping at higher frequencies (e.g., mmwave, FR2, FR3 etc.), i.e., to determine direction of arrival of signals at the wireless device 22 before taking measurement samples. The wireless device 22 power class (PCI) defines maximum wireless device 22 output power (Pmax) supported by the wireless device 22 for transmitting signals. The power class (PC) may depend on frequency of certain band(s). Examples of Pmax are 23 dBm, 26 dBm, 31 dBm, etc.

The parameter k2 defines a number of beam sweeps needed by the wireless device 22 for certain power class and may further depend on the configured DRX cycle (i.e., DRX cycle length). The PTW length (T_PTW,ji) for DRX cycle j and for wireless device 22 power class i using beam sweeping factor (k_2ji) is expressed by the following general expression or function:

In one specific example, T_PTW,ji, can be expressed as follows:

In another specific example, T_PTW,ji, can be expressed as follows:

Where: α_ji is a variable associated with DRX cycle j for wireless device 22 power class i, and may correspond to number of DRX cycles needed for measurement on cell (e.g., serving cell of wireless device 22) for power class i. In one example, α_ji is different for different DRX cycles and/or wireless device power classes (PCs). In another example, α_ji is the same for two or more DRX cycles and/or for two or more PCs, e.g., α_ji =2 for all DRX cycles and/or all power classes.

One example of the PTW length based on relation between beamsweeping and wireless device power class, for serving cell evaluation in idle or inactive states is expressed in Table 4.

Table 4: General example 1 of PTW length based on relation between beamsweeping and wireless device power class

Another general example of the PTW length based on relation between beamsweeping and wireless device power class for serving cell evaluation in idle or inactive states is expressed in Table 5. In this example, the PTW length is determined based on ceiling function. Table 5: General example 2 of PTW length based on relation between beamsweeping and wireless device power class

A specific example of the PTW length based on relation between beamsweeping and wireless device power class for serving cell evaluation in idle or inactive states is expressed in Table 6. In this example, the PTW length is determined based on ceiling function for following specific

examples of the parameters:

— α₁₁ = α₁₂ = α₂₁ = α₂₂ = 4; α₁₃ = α₁₄ = α₂₃ = α₂₄ =2

- Ndj = 2 for all DRX cycles.

^— T_{drx, 1} = 0.32 s; T_{drx, 2} = 0.64 s; T_drx,3 = 1.28 s; T_drx,4 = 2.56 s - Tmin = 1.28 second

- k_2ji = 8 for power class 1 (PCI); k_21i= 8 for power classes 2, 3 and 4 (PC2, PC3 and PC4); k_22i= 5 for PC2, PC3 and PC4); k_23i= 4 for PC2, PC3 and PC4); k_24i= 3 for PC2, PC3 and PC4. Table 6: Specific example of PTW length based on relation between beamsweeping and wireless device power class

Example #3: PTW based on reference signal periodicity

The reference signals (RS) used for measurements are transmitted in one or more time-frequency resources which occur periodically. In another example, the PTW length can be defined as function f3(.) of a parameter (k₃), which in turn is related to and/or based on at least periodicity (Trs) of RS used for measurements on one or more cells. The parameter k₃ may further depend on a relation between Trs and the DRX cycle. In one example k3=Yl when DRX cycle is below certain DRX threshold (G1) and Trs is above certain Trs threshold (G2); otherwise k3=Y2. In one example Y1>Y2. In another example, G1=1.28s, G2=20 ms, Y1=1.5 and Y2=1. In another example, Gl=1.28s, G2=20 ms, Y1=2 and Y2=1.

The parameter k3 may be used for scaling the measurement time of a measurement based on Trs. Examples of RS are SSB, PRS, CSI-RS, SMTC, etc. Examples of Trs are SSB periodicity (T_SSb), PRS periodicity (Tprs), CSI-RS periodicity (Tcsi-rs), SMTC periodicity (Tsmtc), etc. Examples of Tssb or Tsmtc are 5 ms, 10 ms, 20 ms, 40 ms, 80 ms and 160 ms.

The PTW length (T_PTW,jk ) for DRX cycle j and for Trs k is expressed by the following general expression or function: T_PTW,jk = f3(α_jk ,T_drx,j , Tmin, k_2ji, k_3jk)

In one specific example, TpTWjk, can be expressed as follows: T_PTW,jk ⁼

In another specific example, T_PTW,jk , can be expressed as follows:

In another specific example, Tppwjk, can be expressed as follows:

Where:

- α_jk is a variable associated with DRX cycle j and Trs k, and may correspond to a number of DRX cycles needed for measurement on RS with Trs k transmitted by cell (e.g., serving cell of wireless device 22). In one example, α_jk is different for different DRX cycles and/or Trs. In another example, α_jk is the same for two or more DRX cycles and/or for two or more Trs values, e.g., α_jk =2 for all DRX cycles and/or all Trs. k_3jk is a scaling factor for scaling measurement time for configured DRX cycle j and Trs k in a cell. Therefore, k_3jk depends on at least Trs. k_2ji is a scaling factor for scaling measurement time to account for beam sweeping as described in previous example. k_2ji = 1 for measurement on cell on frequency within frequency range (FR1), e.g., frequencies below FR2. In one example, frequencies in FR1 range between 410 MHz and 7125 MHz. k_2ji may depend on DRX cycle and wireless device PC for FR2 , in addition to beamsweeping, as described in previous example.

A general example of the PTW length based on k_3jk (related to Trs) for measurement on a cell in idle or inactive states is expressed in Table 7. The cell on which the measurement is performed by the wireless device 22 may belong to any carrier frequency, e.g., intra-frequency carrier, inter-frequency carrier, inter-RAT carrier, etc. Where:

- Nmj is the minimum number of DRX cycle needed for measurement on a cell for DRX cycle j. In one example, N_mj is different for different DRX cycles. In another example, N_mj is the same for two or more DRX cycles, and/or may depend on type of measurements, e.g., cell detection, measurement on cell, evaluation of a cell, etc. The evaluation of a cell may comprise evaluation of a serving cell, evaluation of a neighbor cell, etc. Table 7: example 1 of PTW length based on RS periodicity

Another example of the PTW length based on l<3jk (related to Trs) for measurement on a cell in idle or inactive states is expressed in Table 8. In this example, the PTW length is determined based on ceiling function.

Table 8: General example 2 of PTW length based on RS periodicity

Specific examples of the PTW length based on at least k_3jk (related to T_rs,k) for measurement on a cell in idle or inactive states are expressed in Tables 9, 10 and 11, below. In these examples, the PTW length is determined based on ceiling function for following specific examples of the parameters:

- k = 1, 2; Two sets of SMTC periodicities (T_{SMTC, 1} and T_{SMTC, 2}). An example of threshold (Hl) for T_SMTC is 20 ms e.g. o T_SMTC, i corresponds to < 20 ms and T_{SMTC, 2} corresponds to > 20 ms

- Nmj = depends on DRX cycle and on the type of measurement: For example: o for cell detection, N_mj = 23 for all DRX cycle; o for cell measurement, N_mj=4, 2, 1 and 1 for Tdrx,i, Tdrx,2, Tdrx,3 and Tdrx,4 respectively. o for cell evaluation, N_mj=16, 8, 5 and 3 for Tdrx,i, Tdrx,2, Tdrx,3 and Tdrx,4 respectively.

Tdrx,l ⁼ 0.32 s; Tdrx,2 ⁼ 0.64 s; Tdrx,3 ⁼ 1.28 s; Tdrx,4 ⁼ 2.56 s

Tmin = 1.28 second.

In the example in Table 9, the measurement times, Tdetect, T measure, Tevaluate represent time to detect a cell, measurement time of a cell and time to evaluate a neighbor cell, respectively, and are called as requirement or measurement requirement.

The example in Table 10 is similar to the previous example, except that the evaluation time is expressed by a function (Note 2 in Table 10) since wireless device 22 may obtain samples across eDRX cycles.

In the example in Table 11, the measurement time corresponds to serving cell evaluation time, which can be expressed in number of DRX cycles (Nserv) and/or in time units (e.g., ms, seconds, etc.). The wireless device 22 is required to evaluate the serving cell over Nserv consecutive DRX cycle. As noted above, if the serving cell does not fulfil the cell selection criterion (during serving cell evaluation time) then the wireless device 22 initiates the measurements of all neighbor cells indicated by the serving cell (e.g., in system information).

Table 9: Specific example of PTW length based on based on RS periodicity

Table 10: Specific example of PTW length based on based on RS periodicity

Table 11 : Specific example of PTW length based on based on RS periodicity

Radio operational tasks based on determined PTW

The wireless device 22, after determining the PTW based on one or more principles or rules described above, may use the determined PTW for one or more radio operational tasks. Some examples of the radio operational tasks include one or more of

Verification of PTW: The wireless device 22 may also receive configured PTW value or parameter (PTWc) associated with configured eDRX from a network node 16, e.g., core NW via NAS, base station/gNB/eNB via RRC, etc. The wireless device 22 may further compare the received PTW value from the network node 16 with the determined PTW value (e.g., PTW length) (PTW_D) based on one or more rules described above. Based on the comparison between PTW_c and PTW_D, the wireless device 22 may take one or more actions:

1. In one example, if PTW_c and PTW_D do not match (are not identical) then the wireless device 22 does not perform measurements on any cell during PTW and/or does not receive paging during the PTW and/or the wireless device 22 does not meet measurement requirements. In one example, the wireless device 22 may initiate cell selection, etc. In another example the wireless device 22 may inform the network node 16 indicating that PTW_c and PTW_D do not match. 2. In another example, if (PTW_c ≥ PTW_D) (e.g., PTW_c = Zi*T_min and PTW_D = Z₂*T_min where Z₁ > Z₂) then the wireless device 22 performs measurements on one or more cells during the PTW; otherwise if ( PTW_c < PTW_D) then the wireless device 22 does not perform measurements on any cell. The wireless device 22 may further receive paging during PTW if PTW_c > PTW_D; otherwise wireless device 22 does not receive paging. In one example, the wireless device 22 may perform measurements only during PTW_D. In another example, if (PTW_c > PTW_D) then the wireless device 22 meets one or more requirements for measurements on one or more cells during the PTW; otherwise if (PTW_c < PTW_D) then the wireless device 22 does meet the requirements for measurements on any cell. In another example, the wireless device 22 may perform measurements during PTW_c depending on difference between PTW_c and PTW_D, e.g., only if PTW_c is not larger than PTW_D by more than certain margin. In another example, the wireless device 22 may perform measurements during the entire PTWc. The wireless device 22 may inform the network node 16 indicating that PTW_c > PTW_D. Examples of requirements are measurement time, cell selection delay, cell reselection delay, etc. During the measurement time, the wireless device 22 performs measurement, e.g., cell detection, measurements such as RSRP, RSRQ, etc. Meeting a requirement may imply, for example, that the wireless device 22 is performing a measurement within a pre-defined measurement time, performing cell selection or reselection within their respective pre-defined time, etc.

3. One or more rules related to wireless device 22 behavior based on the relation between PTW_c and PTW_D may further be defined. Examples of rules are:

The wireless device 22 when configured with eDRX cycle is not expected to measure on a cell during PTW and/or is not expected to meet requirement for measurement on a cell during PTW if PTW_C PTW_D. For example, wireless

device 22 is not expected, by network node 16, to perform a measurement and/or meet a requirement for measurement. Alternatively, the wireless device 22 measures on a cell during PTW and/or meet requirement for measurement on a cell during PTW if PTW_c =PTW_D and/or

The wireless device 22 when configured with eDRX cycle is not expected to receive paging during PTW if PTWC PTW_D. For example, wireless device 22 is not expected, by network node 16, to receive paging from network node 16. Alternatively, the wireless device 22 receives paging during PTW if PTW_C=PTW_D.

The wireless device 22 when configured with eDRX cycle is not expected to measure on a cell during PTW and/or is not expected to meet requirement for measurement on a cell during PTW if PTW_c < PTW_D. For example, wireless device 22 is not expected, by network node 16, to perform a measurement and/or meet a requirement for measurement. Alternatively, the wireless device 22 measures on a cell during PTW and/or meets the requirement for measurement on a cell during PTW if PTW_c > PTW_D.

The wireless device 22 when configured with eDRX cycle is not expected to receive paging during PTW if PTW_c < PTW_D. For example, wireless device 22 is not expected, by network node 16, to receive paging from network node 16. Alternatively, the wireless device 22 receives paging during PTW if PTWc > PTW_D.

Measurements on a cell: The wireless device 22 may perform one or more measurements on one or more cells during the determined PTW. In one example, the wireless device 22 measures every M^th DRX cycle during the PTW. In one example M=1, in another example M>1, e.g., M=2 etc. In another example, the wireless device 22 measures every M^th DRX cycle but only over a subset of DRX cycles during the PTW.

Paging reception: The wireless device 22 may receive paging in one or more DRX cycles during the determined PTW. The paging reception may comprise for example, tuning the wireless device 22 receiver to receive control channel (e.g., PDCCH) and paging data or pay load, e.g., PDSCH.

Method in network node 16 for determining and using PTW based on measurement scaling factor for procedures

The network node 16 determines PTW, associated with eDRX based on one or more measurement scaling factors (K), and uses the determined PTW for performing one or more procedures.

The network node 16 may determine the PTW associated with eDRX based on the same one or more rules described above with respect to the wireless device 22 based methods. The network node 16 then uses the determined PTW for performing following one or more of the following procedures:

1. In one example, the network node 16 configures the wireless device 22 with the PTW parameter (e.g., PTWc) which is related to the determined PTW (e.g., PTW_D) by a relation or mapping or a function, e.g.,

In one example, the network node 16 configures the wireless device 22 with PTW such that PTW_C=PTW_D.

In another example, the network node 16 configures the wireless device 22 with PTW such that PTWC>PTW_D.

In another example, the network node 16 configures the wireless device 22 with PTW such that PTW_c is not less than PTW_D by certain margin.

2. In another example, the network node 16 sends a message during the configured PTW. In another example, the network node 16 sends a message during the configured PTW only if PTW_c and PTW_D are related by a relation (e.g., if PTWC>PTW_D). In another example the network node 16 sends a message during the configured PTW only during PTW_D if PTWC^PTW_D. Examples of messages are paging message, system information, etc.

3. In another example, the network node 16 adapts the PTW parameter based on the requests received from the wireless device 22. For example, if the wireless device 22 indicates that the PTW_c and PTW_D do not match then the network node 16 reconfigures the PTW parameter which matches to PTW_D, e.g., configure PTW_c = PTW_D or configures PTW_c ≥ PTW_D, etc.

4. In another example, the network node 16 adapts the PTW parameter if the wireless device 22 does not receive a paging message when configured with eDRX cycle. The adaptation may comprise reconfiguring the PTW parameter which matches to PTW_D.

One or more embodiments described herein provide one or more of the following advantages:

The wireless device measurement behavior is well defined when wide range of eDRX configurations is used.

The wireless device mobility performance in idle and inactive states is not degraded when eDRX is used. In FR2, the eDRX configuration parameters are adapted to ensure the wireless device has sufficient opportunity for beam sweeping.

Examples

Example Al . A network node 16 configured to communicate with a wireless device 22 (WD 22), the network node 16 configured to, and/or comprising a radio interface 62 and/or comprising processing circuitry 68 configured to: determine a paging window of an extended discontinuous reception, eDRX, cycle for the wireless device 22 based on at least one measurement scaling factor associated with the wireless device 22; and perform at least one action based at least on the determined paging window.

Example A2. The network node 16 of Example Al, wherein the at least one measurement scaling factor is based on at least one of a beam sweeping factor; a relation between the beam sweeping factor and a wireless power class; and a reference signal periodicity.

Example A3. The network node 16 of Example Al, wherein the at least one action includes at least one of configure the wireless device 22 with a paging window parameter based at least on the determined paging window; and cause transmission of a message during a paging window associated with the paging window parameter.

Example Bl. A method implemented in a network node 16 that is configured to communicate with a wireless device 22, the method comprising: determining a paging window of an extended discontinuous reception, eDRX, cycle for the wireless device 22 based on at least one measurement scaling factor associated with the wireless device 22; and performing at least one action based at least on the determined paging window.

Example B2. The method of Example Bl, wherein the at least one measurement scaling factor is based on at least one of: a beam sweeping factor; a relation between the beam sweeping factor and a wireless power class; and a reference signal periodicity.

Example B3. The method of Example Bl, wherein the at least one action includes at least one of: configure the wireless device 22 with a paging window parameter based at least on the determined paging window; and cause transmission of a message during a paging window associated with the paging window parameter.

Example Cl . A wireless device 22 (WD 22) configured to communicate with a network node 16, the WD 22 configured to, and/or comprising a radio interface 82 and/or processing circuitry 84 configured to: determine a paging window of an extended discontinuous reception, eDRX, cycle for the wireless device 22 based on at least one measurement scaling factor associated with the wireless device 22; and perform at least one action based at least on the determined paging window.

Example C2. The WD 22 of Example Cl, wherein the at least one measurement scaling factor is based on at least one of: a beam sweeping factor; a relation between the beam sweeping factor and a wireless power class; and a reference signal periodicity.

Example C3. The WD 22 of Example Cl, wherein the at least one action includes at least one of: verification of the paging window of the eDRX cycle; perform a measurement on a cell during the paging window; and perform paging reception during the paging window.

Example DI . A method implemented in a wireless device 22 (WD 22), the method comprising: determining a paging window of an extended discontinuous reception, eDRX, cycle for the wireless device 22 based on at least one measurement scaling factor associated with the wireless device 22; and performing at least one action based at least on the determined paging window. Example D2. The method of Example DI, wherein the at least one measurement scaling factor is based on at least one of: a beam sweeping factor; a relation between the beam sweeping factor and a wireless power class; and a reference signal periodicity.

Example D3. The method of Example DI, wherein the at least one action includes at least one of: verification of the paging window of the eDRX cycle; perform a measurement on a cell during the paging window; and perform paging reception during the paging window.

As will be appreciated by one of skill in the art, the concepts described herein may be embodied as a method, data processing system, computer program product and/or computer storage media storing an executable computer program. Accordingly, the concepts described herein may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects all generally referred to herein as a “circuit” or “module.” Any process, step, action and/or functionality described herein may be performed by, and/or associated to, a corresponding module, which may be implemented in software and/or firmware and/or hardware. Furthermore, the disclosure may take the form of a computer program product on a tangible computer usable storage medium having computer program code embodied in the medium that can be executed by a computer. Any suitable tangible computer readable medium may be utilized including hard disks, CD-ROMs, electronic storage devices, optical storage devices, or magnetic storage devices.

Some embodiments are described herein with reference to flowchart illustrations and/or block diagrams of methods, systems and computer program products. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer (to thereby create a special purpose computer), special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer readable memory or storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instruction means which implement the function/act specified in the flowchart and/or block diagram block or blocks.

The computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks.

It is to be understood that the functions/acts noted in the blocks may occur out of the order noted in the operational illustrations. For example, two blocks shown in succession may in fact be executed substantially concurrently or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Although some of the diagrams include arrows on communication paths to show a primary direction of communication, it is to be understood that communication may occur in the opposite direction to the depicted arrows.

Computer program code for carrying out operations of the concepts described herein may be written in an object oriented programming language such as Python, Java® or C++. However, the computer program code for carrying out operations of the disclosure may also be written in conventional procedural programming languages, such as the "C" programming language. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer. In the latter scenario, the remote computer may be connected to the user's computer through a local area network (LAN) or a wide area network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet Service Provider).

Many different embodiments have been disclosed herein, in connection with the above description and the drawings. It will be understood that it would be unduly repetitious and obfuscating to literally describe and illustrate every combination and subcombination of these embodiments. Accordingly, all embodiments can be combined in any way and/or combination, and the present specification, including the drawings, shall be construed to constitute a complete written description of all combinations and subcombinations of the embodiments described herein, and of the manner and process of making and using them, and shall support claims to any such combination or subcombination.

Abbreviations that may be used in the preceding description include:

Abbreviation Explanation

BLER Block error rate

BWP Bandwidth part

CP Cyclic prefix

CSI-RS Channel state information reference signals

DCI Downlink control information

DL Downlink

DRS Discovery Signal

DRX Discontinuous Reception eDRX Extended DRX eNB Evolved node B

FDD Frequency division duplex

FR1 Frequency range 1

FR2 Frequency range 2

FR3 Frequency range 3 gNB Next generation Node B (5G base station)

NR New radio (5G)

PTW Paging time window

PBCH Physical broadcast channel

PDCCH Physical downlink control channel PDSCH Physical downlink shared channel

PRS Positioning reference signals

PUCCH Physical uplink control channel

PUSCH Physical uplink shared channel

RAT Radio access technology

RRC Radio resource control

RSRP Reference symbol received power

RSRQ Reference symbol received quality

RRM Radio resource management

SCS Subcarrier spacing

SFN System frame number

SMTC SSB measurement timing configuration

SRS Sounding reference signal

SSB Synchronization signal and PBCH block

TDD Time division duplex

UE User equipment

UL Uplink

It will be appreciated by persons skilled in the art that the embodiments described herein are not limited to what has been particularly shown and described herein above. In addition, unless mention was made above to the contrary, it should be noted that all of the accompanying drawings are not to scale. A variety of modifications and variations are possible in light of the above teachings without departing from the scope of the following claims.

Claims

CLAIMS:

1. A wireless device (22) comprising: processing circuitry (84) configured to: determine a paging window of an extended discontinuous reception, eDRX, cycle for the wireless device (22) based on at least one measurement scaling factor, the at least one measurement scaling factor being based on at least one of a reference signal periodicity and a discontinuous reception, DRX, cycle comprised within the determined paging window of the eDRX cycle; and perform at least one action based at least on the determined paging window of the eDRX cycle.

2. The wireless device (22) of Claim 1, wherein the at least one measurement scaling factor is based on a relation between the reference signal periodicity and the DRX cycle.

3. The wireless device (22) of any one of Claims 1-2, wherein the at least one measurement scaling factor is based on a beam sweeping factor that defines a number of beam sweeps needed by the wireless device to determine a direction of arrival of signals, the beam sweeping factor being based on the DRX cycle.

4. The wireless device (22) of Claim 3, wherein the at least one measurement scaling factor is based on a wireless power class that defines a maximum wireless output power supported by the wireless device (22) for transmitting signals.

5. The wireless device (22) of any one of Claims 1-4, wherein the at least one action includes at least one of: verifying the determined paging window of the eDRX cycle; performing a measurement on a cell during the determined paging window of the eDRX cycle; and performing paging reception during the determined paging window of the eDRX cycle.

6. The wireless device (22) of any one of Claims 1-5, wherein the at least one measurement scaling factor is configured to increase a number of DRX cycles compared to a preconfigured number of DRX cycles.

7. The wireless device (22) of any one of Claims 1-6, wherein the reference signal periodicity is used to scale a measurement time of at least one measurement of at least one reference signal.

8. The wireless device (22) of any one of Claims 1-7, wherein the at least one reference signal includes at least one of a synchronization signal and physical broadcast channel block, SSB, a synchronization signal and physical broadcast channel block measurement timing configuration, SMTC, positioning reference signal, PRS, and channel state information reference signal, CSI-RS.

9. The wireless device (22) of any one of Claims 1-8, wherein the processing circuitry (84) is further configured to: receive a configured paging window value from the network node (16); compare the configured paging window value to a value of the determined paging window of the eDRX cycle; the performing of the at least one action being based at least on the comparison.

10. The wireless device (22) of Claim 9, wherein the at least one action includes one of: determining that performing at least one measurement on at least one cell during the determined paging window of the eDRX cycle is not expected by the network node (16); determining that paging from the network node (16) is not expected during the determined paging window of the eDRX cycle; determining that performing at least one measurement on at least one cell during the determined paging window of the eDRX cycle is expected by the network node (16); and determining that paging from the network node (16) is expected during the determined paging window of the eDRX cycle.

11. The wireless device (22) of Claim 10, wherein the comparison indicates that the configured paging window value is one of equal to the value of the determined paging window of the eDRX cycle; greater than the value of the determined paging window of the eDRX cycle; and less than the value of the determined paging window of the eDRX cycle.

12. The wireless device (22) of Claim 10, wherein the at least one action includes determining whether to perform measurements on at least one cell during the determined paging window of the eDRX cycle based on the comparison indicating that the configured paging window value is one of equal to the value of the determined paging window of the eDRX cycle; and greater than the value of the determined paging window of the eDRX cycle.

13. The wireless device (22) of any one of Claims 1-12, wherein the eDRX cycle is used by the wireless device (22) when operating in a low activity state.

14. The wireless device (22) of any one of Claims 1-13, wherein the reference signal periodicity comprises at least one of a SSB periodicity, SMTC periodicity, PRS periodicity and CSI-RS periodicity.

15. A network node (16) comprising: processing circuitry (68) configured to: determine a paging window of an extended discontinuous reception, eDRX, cycle of a wireless device (22) based on at least one measurement scaling factor, the at least one measurement scaling factor being based on at least one of a reference signal periodicity and a discontinuous reception, DRX, cycle comprised within the determined paging window of the eDRX cycle; and perform at least one action based at least on the determined paging window of the eDRX cycle.

16. The network node (16) of Claim 15, wherein the at least one measurement scaling factor is based on a relation between the reference signal periodicity and the DRX cycle.

17. The network node (16) of any one of Claims 15-16, wherein the at least one measurement scaling factor is based on a beam sweeping factor that defines a number of beam sweeps needed by the wireless device (22) to determine a direction of arrival of signals, the beam sweeping factor being based on the DRX cycle.

18. The network node (16) of Claim 17, wherein the at least one measurement scaling factor is based on a wireless power class that defines a maximum wireless output power supported by the wireless device (22) for transmitting signals.

19. The network node (16) of any one of Claims 15-18, wherein the at least one action includes at least one of: verifying the determined paging window of the eDRX cycle; cause transmission of at least one reference signal for the wireless device (22) to perform a measurement on a cell during the determined paging window of the eDRX cycle; and cause transmission of paging during the determined paging window of the eDRX cycle.

20. The network node (16) of any one of Claims 15-19, wherein the at least one measurement scaling factor is configured to increase a number of DRX cycles compared to a preconfigured number of DRX cycles.

21. The network node (16) of any one of Claims 15-20, wherein the reference signal periodicity is used to scale a measurement time of at least one measurement of at least one reference signal.

22. The network node (16) of any one of Claims 15-21, wherein the at least one reference signal includes at least one of a synchronization signal and physical broadcast channel block, SSB, a synchronization signal and physical broadcast channel block measurement timing configuration, SMTC, positioning reference signal, PRS, and channel state information reference signal, CSI-RS.

23. The network node (16) of any one of Claims 15-22, wherein the processing circuitry (68) is further configured to: configure the wireless device (22) with a configured paging window value; compare the configured paging window value to a value of the determined paging window of the eDRX cycle; the performing of the at least one action being based at least on the comparison.

24. The network node (16) of Claim 23, wherein the at least one action includes one of: determining that the wireless device (22) is not expecting to perform at least one measurement on at least one cell during the determined paging window of the eDRX cycle; determining that the wireless device (22) is not expecting to receive paging from the network node (16) during the determined paging window of the eDRX cycle; determining that the wireless device (22) is expecting to perform at least one measurement on at least one cell during the determined paging window of the eDRX cycle; and determining that the wireless device (22) is expecting to receive paging from the network node (16) during the determined paging window of the eDRX cycle.

25. The network node (16) of Claim 24, wherein the comparison indicates that the configured paging window value is one of: equal to the value of the determined paging window of the eDRX cycle; greater than the value of the determined paging window of the eDRX cycle; and less than the value of the determined paging window of the eDRX cycle.

26. The network node (16) of Claim 24, wherein the at least one action includes determining whether the wireless device (22) is to perform measurements on at least one cell during the determined paging window of the eDRX cycle based on the comparison indicating that the configured paging window value is one of: equal to the value of the determined paging window of the eDRX cycle; and greater than the value of the determined paging window of the eDRX cycle.

27. The network node (16) of any one of Claims 15-26, wherein the eDRX cycle is used when the wireless device (22) is operating in a low activity state.

28. The network node (16) of any one of Claims 15-27, wherein the reference signal periodicity comprises at least one of a SSB periodicity, SMTC periodicity, PRS periodicity and CSI-RS periodicity.

29. A method implemented by a wireless device (22), the method comprising: determining (S146) a paging window of an extended discontinuous reception, eDRX, cycle for the wireless device (22) based on at least one measurement scaling factor, the at least one measurement scaling factor being based on at least one of a reference signal periodicity and a discontinuous reception, DRX, cycle comprised within the determined paging window of the eDRX cycle; and performing (SI 48) at least one action based at least on the determined paging window of the eDRX cycle.

30. The method of Claim 29, wherein the at least one measurement scaling factor is based on a relation between the reference signal periodicity and the DRX cycle.

31. The method of any one of Claims 29-30, wherein the at least one measurement scaling factor is based on a beam sweeping factor that defines a number of beam sweeps needed by the wireless device (22) to determine a direction of arrival of signals, the beam sweeping factor being based on the DRX cycle.

32. The method of Claim 31, wherein the at least one measurement scaling factor is based on a wireless power class that defines a maximum wireless output power supported by the wireless device (22) for transmitting signals.

33. The method of any one of Claims 29-32, wherein the at least one action includes at least one of: verifying the determined paging window of the eDRX cycle; performing a measurement on a cell during the determined paging window of the eDRX cycle; and performing paging reception during the determined paging window of the eDRX cycle.

34. The method of any one of Claims 29-33, wherein the at least one measurement scaling factor is configured to increase a number of DRX cycles compared to a preconfigured number of DRX cycles.

35. The method of any one of Claims 29-34, wherein the reference signal periodicity is used to scale a measurement time of at least one measurement of at least one reference signal.

36. The method of any one of Claims 29-35, wherein the at least one reference signal includes at least one of a synchronization signal and physical broadcast channel block, SSB, a synchronization signal and physical broadcast channel block measurement timing configuration, SMTC, positioning reference signal, PRS, and channel state information reference signal, CSI-RS.

37. The method of any one of Claims 29-36, further comprising: receiving a configured paging window value from the network node (16); comparing the configured paging window value to a value of the determined paging window of the eDRX cycle; and the performing of the at least one action being based at least on the comparison.

38. The method of Claim 37, wherein the at least one action includes one of determining that performing at least one measurement on at least one cell during the determined paging window of the eDRX cycle is not expected by the network node (16); determining that paging from the network node (16) is not expected during the determined paging window of the eDRX cycle; determining that performing at least one measurement on at least one cell during the determined paging window of the eDRX cycle is expected by the network node (16); and determining that paging from the network node (16) is expected during the determined paging window of the eDRX cycle.

39. The method of Claim 38, wherein the comparison indicates that the configured paging window value is one of equal to the value of the determined paging window of the eDRX cycle; greater than the value of the determined paging window of the eDRX cycle; and less than the value of the determined paging window of the eDRX cycle.

40. The method of Claim 38, wherein the at least one action includes determining whether to perform measurements on at least one cell during the determined paging window of the eDRX cycle based on the comparison indicating that the configured paging window value is one of: equal to the value of the determined paging window of the eDRX cycle; and greater than the value of the determined paging window of the eDRX cycle.

41. The method of any one of Claims 29-40, wherein the eDRX cycle is used by the wireless device (22) when operating in a low activity state.

42. The method of any one of Claims 29-41, wherein the reference signal periodicity comprises at least one of a SSB periodicity, SMTC periodicity, PRS periodicity and CSI-RS periodicity.

43. A method implemented by a network node (16), the method comprising: determining (SI 38) a paging window of an extended discontinuous reception, eDRX, cycle of a wireless device based on at least one measurement scaling factor, the at least one measurement scaling factor being based on at least one of a reference signal periodicity and a discontinuous reception, DRX, cycle comprised within the determined paging window of the eDRX cycle; and performing (SI 40) at least one action based at least on the determined paging window of the eDRX cycle.

44. The method of Claim 43, wherein the at least one measurement scaling factor is based on a relation between the reference signal periodicity and the DRX cycle.

45. The method of any one of Claims 43-44, wherein the at least one measurement scaling factor is based on a beam sweeping factor that defines a number of beam sweeps needed by the wireless device (22) to determine a direction of arrival of signals, the beam sweeping factor being based on the DRX cycle.

46. The method of Claim 45, wherein the at least one measurement scaling factor is based on a wireless power class that defines a maximum wireless output power supported by the wireless device (22) for transmitting signals.

47. The method of any one of Claims 43-45, wherein the at least one action includes at least one of: verifying the determined paging window of the eDRX cycle; cause transmission of at least one reference signal for the wireless device (22) to perform a measurement on a cell during the determined paging window of the eDRX cycle; and cause transmission of paging during the determined paging window of the eDRX cycle.

48. The method of any one of Claims 43-47, wherein the at least one measurement scaling factor is configured to increase a number of DRX cycles compared to a preconfigured number of DRX cycles.

49. The method of any one of Claims 43-48, wherein the reference signal periodicity is used to scale a measurement time of at least one measurement of at least one reference signal.

50. The method of any one of Claims 43-49, wherein the at least one reference signal includes at least one of a synchronization signal and physical broadcast channel block, SSB, a synchronization signal and physical broadcast channel block measurement timing configuration, SMTC, positioning reference signal, PRS, and channel state information reference signal, CSI-RS.

51. The method of any one of Claims 43-50, further comprising: configuring the wireless device (22) with a configured paging window value; comparing the configured paging window value to a value of the determined paging window of the eDRX cycle; and the performing of the at least one action being based at least on the comparison.

52. The method of Claim 51, wherein the at least one action includes one of determining that the wireless device (22) is not expecting to perform at least one measurement on at least one cell during the determined paging window of the eDRX cycle; determining that the wireless device (22) is not expecting to receive paging from the network node during the determined paging window of the eDRX cycle; determining that the wireless device (22) is expecting to perform at least one measurement on at least one cell during the determined paging window of the eDRX cycle; and determining that the wireless device (22) is expecting to receive paging from the network node during the determined paging window of the eDRX cycle.

53. The method of Claim 52, wherein the comparison indicates that the configured paging window value is one of equal to the value of the determined paging window of the eDRX cycle; greater than the value of the determined paging window of the eDRX cycle; and less than the value of the determined paging window of the eDRX cycle.

54. The method of Claim 52, wherein the at least one action includes determining whether the wireless device (22) is to perform measurements on at least one cell during the determined paging window of the eDRX cycle based on the comparison indicating that the configured paging window value is one of equal to the value of the determined paging window of the eDRX cycle; and greater than the value of the determined paging window of the eDRX cycle.

55. The method of any one of Claims 43-54, wherein the eDRX cycle is used when the wireless device (22) is operating in a low activity state.

56. The method of any one of Claims 43-55, wherein the reference signal periodicity comprises at least one of a SSB periodicity, SMTC periodicity, PRS periodicity and CSI-RS periodicity.