Enhanced wake-up signal based power saving for a wireless device

A technique for power saving, comprising establishing a radio resource control (RRC) connection with a wireless system, entering an RRC connected mode based on the established RRC connection, receiving, from the wireless system, configuration information indicating a discontinuous reception (DRX) cycle time, a DRX on time period, and an offset time, determining an enhanced wake-up signal (EWUS) monitoring occasion for a DRX cycle based on the offset time and the DRX on time period, monitoring, during a first DRX cycle, for an EWUS during the EWUS monitoring occasion associated with the first DRX cycle, receiving, from the wireless system, the EWUS during the EWUS monitoring occasion, determining that the EWUS indicates that the wireless device skip one or more future EWUS monitoring occasions, and skipping monitoring for the EWUS based on the indicated skipped one or more future EWUS monitoring occasions.

FIELD

The present application relates to wireless devices and wireless networks, and more particularly to apparatus, systems, and methods for generating and handling an enhanced wake up signal (WUS).

BACKGROUND

Wireless communication systems are rapidly growing in usage. In recent years, wireless devices such as smart phones and tablet computers have become increasingly sophisticated. In addition to supporting telephone calls, many mobile devices now provide access to the internet, email, text messaging, and navigation using the global positioning system (GPS), and are capable of operating sophisticated applications that utilize these functionalities. Additionally, there exist numerous different wireless communication technologies and standards. Some examples of wireless communication standards include GSM, UMTS (associated with, for example, WCDMA or TD-SCDMA air interfaces), LTE, LTE Advanced (LTE-A), HSPA, 3GPP2 CDMA2000 (e.g., 1×RTT, 1×EV-DO, HRPD, eHRPD), IEEE 802.11 (WLAN or Wi-Fi), BLUETOOTH™, etc.

The ever increasing number of features and functionality introduced in wireless communication devices also creates a continuous need for improvement in both wireless communications and in wireless communication devices. To increase coverage and better serve the increasing demand and range of envisioned uses of wireless communication, in addition to the communication standards mentioned above, there are further wireless communication technologies under development, including fifth generation (5G) new radio (NR) communication. Accordingly, improvements in the field in support of such development and design are desired.

SUMMARY

Aspects relate to apparatuses, systems, and methods for power saving, comprising: establishing a radio resource control (RRC) connection with a wireless device; transmitting, to the wireless device, configuration information indicating a discontinuous reception (DRX) cycle time, a DRX on time period, and an offset time; transmitting an enhanced wake-up signal (EWUS) monitoring occasion for a DRX cycle, the EWUS monitoring occasion based on the offset time and the DRX on time period; determining that the wireless device can skip monitoring one or more future EWUS monitoring occasions; transmitting, during a first DRX cycle, an EWUS for the wireless device during the EWUS monitoring occasion associated with the first DRX cycle, the EWUS indicating that the wireless device can skip the one or more future EWUS monitoring occasions, and skipping transmitting the EWUS to the wireless device during the one or more future WUS monitoring occasions.

Another aspect relates to apparatuses, systems, and methods for power saving comprising: establishing a radio resource control (RRC) connection with a wireless system, entering an RRC connected mode based on the established RRC connection, receiving, from the wireless system, configuration information indicating a discontinuous reception (DRX) cycle time, a DRX on time period, and an offset time, determining a wake-up signal (WUS) monitoring occasion for a DRX cycle based on the offset time and the DRX on time period, monitoring, during a first DRX cycle, for a WUS during the WUS monitoring occasion associated with the first DRX cycle, receiving, from the wireless system, the WUS during the WUS monitoring occasion, determining that the WUS indicates that the wireless device skip one or more future WUS monitoring occasions, and skipping monitoring for the WUS based on the indicated skipped one or more future WUS monitoring occasions.

The techniques described herein may be implemented in and/or used with a number of different types of devices, including but not limited to cellular phones, wireless devices, tablet computers, wearable computing devices, portable media players, and any of various other computing devices.

DETAILED DESCRIPTION

In some wireless communications systems, a wireless device may successfully connect to a wireless node and enter an RRC connected state. In this RRC connected state, the wireless device may monitor a physical downlink control channel (PDCCH) to obtain control information, scheduling information, paging information, etc. Rather than constantly monitoring for the PDCCH, power consumption may be reduced by monitoring for the PDCCH according to a schedule during defined monitoring instances. Power consumption may be further reduced by allowing the wireless device to skip some scheduled PDCCH monitoring instances. In some cases, a wake-up signal (WUS) may be used to indicate that a wireless device should monitor an upcoming PDCCH monitoring instance. However, monitoring for a WUS uses more power than not monitoring for the WUS, and there is a desire to reduce power consumption for wireless devices.

As will be explained further herein, an enhanced WUS may be used to indicate that one or more WUS monitoring instances may be skipped.

Carrier Medium—a memory medium as described above, as well as a physical transmission medium, such as a bus, network, and/or other physical transmission medium that conveys signals such s electrical, electromagnetic, or digital signals.

Base Station—The term “base station” or “wireless station” has the full breadth of its ordinary meaning, and at least includes a wireless communication station installed at a fixed location and used to communicate as part of a wireless telephone system or radio system. For example, if the base station is implemented in the context of LTE, it may alternately be referred to as an ‘eNodeB’ or ‘eNB’. If the base station is implemented in the context of 5G NR, it may alternately be referred to as a ‘gNodeB’ or ‘gNB’. Although some aspects are described in the context of LTE or 5G NR, references to “eNB,” “gNB,” “nodeB,” “base station,” “NB,” etc., may refer to one or more wireless nodes that service a cell to provide a wireless connection between user devices and a wider network generally and that the concepts discussed are not limited to any particular wireless technology. Although some aspects are described in the context of LTE or 5G NR, references to “eNB,” “gNB,” “nodeB,” “base station,” “NB,” etc., are not intended to limit the concepts discussed herein to any particular wireless technology and the concepts discussed may be applied in any wireless system.

Node—The term “node,” or “wireless node” as used herein, may refer to one more apparatus associated with a cell that provide a wireless connection between user devices and a wired network generally.

Processing Element (or Processor)—refers to various elements or combinations of elements that are capable of performing a function in a device, such as a user equipment or a cellular network device. Processing elements may include, for example: processors and associated memory, portions or circuits of individual processor cores, entire processor cores, individual processors, processor arrays, circuits such as an ASIC (Application Specific Integrated Circuit), programmable hardware elements such as a field programmable gale array (FPGA), as well my of various combinations of the above.

Example Wireless Communication System

Turning now toFIG.1, a simplified example of a wireless communication system is illustrated, according to some aspects. It is noted that the system ofFIG.1is merely one example of a possible system, and that features of this disclosure may be implemented in any of various systems, as desired.

The base station (BS)102A may be a base transceiver station (BTS) or cell site (a “cellular base station”) and may include hardware that enables wireless communication with the UEs106A through106N.

As shown, the base station102A may also be equipped to communicate with a network100(e.g., a core network of a cellular service provider, a telecommunication network such as a public switched telephone network (PSTN), and/or the Internet, among various possibilities). Thus, the base station102A may facilitate communication between the user devices and/or between the user devices and the network100. In particular, the cellular base station102A may provide UEs106with various telecommunication capabilities, such as voice, SMS and/or data services.

In some aspects, base station102A may be a next generation base station, e.g., a 5G New Radio (5G NR) base station, or “gNB.” In some aspects, a gNB may be connected to a legacy evolved packet core (EPC) network and/or to a NR core (NRC)/5G core (5GC) network. In addition, a gNB cell may include one or more transition and reception points (TRPs). In addition, a UE capable of operating according to 5G NR may be connected to one or more TRPs within one or more gNBs. For example, it may be possible that that the base station102A and one or more other base stations102support joint transmission, such that UE106may be able to receive transmissions from multiple base stations (and/or multiple TRPs provided by the same base station). For example, as illustrated inFIG.1, both base station102A and base station102C are shown as serving UE106A.

Example User Equipment (UE)

FIG.2illustrates user equipment106(e.g., one of the devices106A through106N) in communication with a base station102, according to some aspects. The UE106may be a device with cellular communication capability such as a mobile phone, a hand-held device, a computer, a laptop, a tablet, a smart watch or other wearable device, or virtually any type of wireless device.

The UE106may include a processor (processing element) that is configured to execute program instructions stored in memory. The UE106may perform any of the method aspects described herein by executing such stored instructions. Alternatively, or in addition, the UE106may include a programmable hardware element such as an FPGA (field-programmable gate array), an integrated circuit, and/or any of various other possible hardware components that are configured to perform (e.g., individually or in combination) any of the method aspects described herein, or any portion of any of the method aspects described herein.

In some aspects, the UE106may include separate transmit and/or receive chains (e.g., including separate antennas and other radio components) for each wireless communication protocol with which it is configured to communicate. As a further possibility, the UE106may include one or more radios which are shared between multiple wireless communication protocols, and one or more radios which are used exclusively by a single wireless communication protocol. For example, the UE106might include a shared radio for communicating using either of LTE or 5G NR (or either of LTE or 1×RTT, or either of LTE or GSM, among various possibilities), and separate radios for communicating using each of Wi-Fi and Bluetooth. Other configurations are also possible.

The physical downlink shared channel (PDSCH) may carry user data and higher-layer signaling to the UEs106. The physical downlink control channel (PDCCH) may carry information about the transport format and resource allocations related to the PDSCH channel, among other things. It may also inform the UEs106about the transport format, resource allocation, and H-ARQ (Hybrid Automatic Repeat Request) information related to the uplink shared channel. Typically, downlink scheduling (assigning control and shared channel resource blocks to the UE102within a cell) may be performed at any of the base stations102based on channel quality information fed back from any of the UEs106. The downlink resource assignment information may be sent on the PDCCH used for (e.g., assigned to) each of the UEs.

Example Communication Device

FIG.3illustrates an example simplified block diagram of a communication device106, according to some aspects. It is noted that the block diagram of the communication device ofFIG.3is only one example of a possible communication device. According to aspects, communication device106may be a user equipment (UE) device, a mobile device or mobile station, a wireless device or wireless station, a desktop computer or computing device, a mobile computing device (e.g., a laptop, notebook, or portable computing device), a tablet, and/or a combination of devices, among other devices. As shown, the communication device106may include a set of components300configured to perform core functions. For example, this set of components may be implemented as a system on chip (SOC), which may include portions for various purposes. Alternatively, this set of components300may be implemented as separate components or groups of components for the various purposes. The set of components300may be coupled (e.g., communicatively; directly or indirectly) to various other circuits of the communication device106.

For example, the communication device106may include various types of memory (e.g., including NAND flash310), an input/output interface such as connector I/F320(e.g., for connecting to a computer system; dock; charging station; input devices, such as a microphone, camera, keyboard; output devices, such as speakers; etc.), the display360, which may be integrated with or external to the communication device106, and wireless communication circuitry330(e.g., for LTE, LTE-A, NR, UMTS, GSM, CDMA2000, Bluetooth, Wi-Fi, NFC, GPS, etc.). In some aspects, communication device106may include wired communication circuitry (not shown), such as a network interface card, e.g., for Ethernet.

The wireless communication circuitry330may couple (e.g., communicatively; directly or indirectly) to one or more antennas, such as antenna(s)335as shown. The wireless communication circuitry330may include cellular communication circuitry and/or short to medium range wireless communication circuitry, and may include multiple receive chains and/or multiple transmit chains for receiving and/or transmitting multiple spatial streams, such as in a multiple-input multiple output (MIMO) configuration.

In some aspects, as further described below, cellular communication circuitry330may include one or more receive chains (including and/or coupled to (e.g., communicatively; directly or indirectly) dedicated processors and/or radios) for multiple RATs (e.g., a first receive chain for LTE and a second receive chain for 5G NR). In addition, in some aspects, cellular communication circuitry330may include a single transmit chain that may be switched between radios dedicated to specific RATs. For example, a first radio may be in dedicated to a first RAT, e.g., LTE, and may be in communication with a dedicated receive chain and a transmit chain shared with a second radio. The second radio may be dedicated to a second RAT, e.g., 5G NR, and may be in communication with a dedicated receive chain and the shared transmit chain. In some aspects, the second RAT may operate at mmWave frequencies. As mmWave systems operate in higher frequencies than typically found in LTE systems, signals in the mmWave frequency range are heavily attenuated by environmental factors. To help address this attenuating, mmWave systems often utilize beamforming and include more antennas as compared LTE systems. These antennas may be organized into antenna arrays or panels made up of individual antenna elements. These antenna arrays may be coupled to the radio chains.

The communication device106may further include one or more smart cards345that include SIM (Subscriber Identity Module) functionality, such as one or more UICC(s) (Universal Integrated Circuit Card(s)) cards345.

As shown, the SOC300may include processor(s)302, which may execute program instructions for the communication device106and display circuitry304, which may perform graphics processing and provide display signals to the display360. The processor(s)302may also be coupled to memory management unit (MMU)340, which may be configured to receive addresses from the processor(s)302and translate those addresses to locations in memory (e.g., memory306, read only memory (ROM)350, NAND flash memory310) and/or to other circuits or devices, such as the display circuitry304, wireless communication circuitry330, connector I/F320, and/or display360. The MMU340may be configured to perform memory protection and page table translation or set up. In some aspects, the MMU340may be included as a portion of the processor(s)302.

As noted above, the communication device106may be configured to communicate using wireless and/or wired communication circuitry. As described herein, the communication device106may include hardware and software components for implementing any of the various features and techniques described herein. The processor302of the communication device106may be configured to implement part or all of the features described herein, e.g., by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively (or in addition), processor302may be configured as a programmable hardware element, such as an FPGA (Field Programmable Gate Array), or as an ASIC (Application Specific Integrated Circuit). Alternatively (or in addition) the processor302of the communication device106, in conjunction with one or more of the other components300,304,306,310,320,330,340,345,350,360may be configured to implement part or all of the features described herein.

Further, as described herein, wireless communication circuitry330may include one or more processing elements. In other words, one or more processing elements may be included in wireless communication circuitry330. Thus, wireless communication circuitry330may include one or more integrated circuits (ICs) that are configured to perform the functions of wireless communication circuitry330. In addition, each integrated circuit may include circuitry (e.g., first circuitry, second circuitry, etc.) configured to perform the functions of wireless communication circuitry330.

Example Base Station

The base station102may be configured to communicate wirelessly using multiple wireless communication standards. In some instances, the base station102may include multiple radios, which may enable the base station102to communicate according to multiple wireless communication technologies. For example, as one possibility, the base station102may include an LTE radio for performing communication according to LTE as well as a 5G NR radio for performing communication according to 5G NR. In such a case, the base station102may be capable of operating as both an LTE base station and a 5G NR base station. When the base station102supports mmWave, the 5G NR radio may be coupled to one or more mmWave antenna arrays or panels. As another possibility, the base station102may include a multi-mode radio, which is capable of performing communications according to any of multiple wireless communication technologies (e.g., 5G NR and LTE, 5G NR and Wi-Fi, LIE and Wi-Fi, LIE and UMTS, LIE and CDMA2000, UNITS and GSM, etc.).

As described further subsequently herein, the BS102may include hardware and software components for implementing or supporting implementation of features described herein. The processor404of the base station102may be configured to implement or support implementation of part or all of the methods described herein, e.g., by executing program instructions stored on a memory medium (e.g., a non-transitory computer readable memory medium). Alternatively, the processor404may be configured as a programmable hardware element, such as an FPGA (Field Programmable Gate Array), or as an ASIC (Application Specific Integrated Circuit), or a combination thereof. Alternatively (or in addition) the processor404of the BS102, in conjunction with one or more of the other components430,432,434,440,450,460,470may be configured to implement or support implementation of part or all of the features described herein.

In addition, as described herein, processor(s)404may include one or more processing elements. Thus, processor(s)404may include one or more integrated circuits (ICs) that are configured to perform the functions of processor(s)404. In addition, each integrated circuit may include circuitry (e.g., first circuitry, second circuitry, etc.) configured to perform the functions of processor(s)404.

Further, as described herein, radio430may include one or more processing elements. Thus, radio430may include one or more integrated circuits (ICs) that are configured to perform the functions of radio430. In addition, each integrated circuit may include circuitry (e.g., first circuitry, second circuitry, etc.) configured to perform the functions of radio430.

Example Cellular Communication Circuitry

The cellular communication circuitry330may couple (e.g., communicatively; directly or indirectly) to one or more antennas, such as antennas335a-band336as shown. In some aspects, cellular communication circuitry330may include dedicated receive chains (including and/or coupled to (e.g., communicatively; directly or indirectly) dedicated processors and/or radios) for multiple RATs (e.g., a first receive chain for LTE and a second receive chain for 5G NR). For example, as shown inFIG.5, cellular communication circuitry330may include a first modem510and a second modem520. The first modem510may be configured for communications according to a first RAT, e.g., such as LTE or LTE-A, and the second modem520may be configured for communications according to a second RAT, e.g., such as 5G NR.

In some aspects, a switch570may couple transmit circuitry534to uplink (UL) front end572. In addition, switch570may couple transmit circuitry544to UL front end572. UL front end572may include circuitry for transmitting radio signals via antenna336. Thus, when cellular communication circuitry330receives instructions to transmit according to the first RAT (e.g., as supported via the first modem510), switch570may be switched to a first state that allows the first modem510to transmit signals according to the first RAT (e.g., via a transmit chain that includes transmit circuitry534and UL front end572). Similarly, when cellular communication circuitry330receives instructions to transmit according to the second RAT (e.g., as supported via the second modem520), switch570may be switched to a second state that allows the second modem520to transmit signals according to the second RAT (e.g., via a transmit chain that includes transmit circuitry544and UL front end572).

As described herein, the first modem510and/or the second modem520may include hardware and software components for implementing any of the various features and techniques described herein. The processors512,522may be configured to implement part or all of the features described herein, e.g., by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively (or in addition), processors512,522may be configured as a programmable hardware element, such as an FPGA (Field Programmable Gate Army), or as an ASIC (Application Specific Integrated Circuit). Alternatively (or in addition) the processors512,522, in conjunction with one or more of the other components530,532,534,540,542,544,550,570,572,335and336may be configured to implement part or all of the features described herein.

In addition, as described herein, processors512,522may include one or more processing elements. Thus, processors512,522may include one or more integrated circuits (ICs) that are configured to perform the functions of processors512,522. In addition, each integrated circuit may include circuitry (e.g., first circuitry, second circuitry, etc.) configured to perform the functions of processors512,522.

In some aspects, the cellular communication circuitry330may include only one transmit/receive chain. For example, the cellular communication circuitry330may not include the modem520, the RF front end540, the DL front end560, and/or the antenna335b. As another example, the cellular communication circuitry330may not include the modem510, the RF front end530, the DL front end550, and/or the antenna335a. In some aspects, the cellular communication circuitry330may also not include the switch570, and the RF front end530or the RF front end540may be in communication, e.g., directly, with the UL, front end572.

Example Network Element

FIG.6illustrates an exemplary block diagram of a network element600, according to some aspects. According to some aspects, the network element600may implement one or more logical functions/entities of a cellular core network, such as a mobility management entity (MME), serving gateway (S-GW), access and management function (AMF), session management function (SMF), network slice quota management (NSQM) function, etc. It is noted that the network element600ofFIG.6is merely one example of a possible network element600. As shown, the core network element600may include processor(s)604which may execute program instructions for the core network element600. The processor(s)604may also be coupled to memory management unit (MMU)640, which may be configured to receive addresses from the processor(s)604and translate those addresses to locations in memory (e.g., memory660and read only memory (ROM)650) or to other circuits or devices.

The network element600may include at least one network port670. The network port670may be configured to couple to one or more base stations and/or other cellular network entities and/or devices. The network element600may communicate with base stations (e.g., eNBs/gNBs) and/or other network entities/devices by means of any of various communication protocols and/or interfaces.

As described further subsequently herein, the network element600may include hardware and software components for implementing and/or supporting implementation of features described herein. The processor(s)604of the core network element600may be configured to implement or support implementation of part or all of the methods described herein, e.g., by executing program instructions stored on a memory medium (e.g., a nontransitory computer-readable memory medium). Alternatively, the processor604may be configured as a programmable hardware element, such as an FPGA (Field Programmable Gate Array), or as an ASIC (Application Specific Integrated Circuit), or a combination thereof.

Radio Resource Control (RRC) States

Multiple cellular communication technologies include the use of a radio resource control (RRC) protocol, e.g., which may facilitate connection establishment and release, radio bearer establishment, reconfiguration, and release, and/or various other possible signaling functions supporting the air interface between a wireless device and a cellular base station.

A wireless device may commonly operate in one of multiple possible states with respect to RRC. For example, in LTE, a wireless device may operate in an RRC connected state (e.g., in which the wireless device can perform continuous data transfer, and in which handover between cells is managed by the network and access stratum (AS) context information is retained for the wireless device), or in an RRC idle state (e.g., in which the wireless device may operate in a more battery efficient state when not performing continuous data transfer, in which the wireless device may handle it's cell re-selection activities, and in which the network may not retain AS context information for the wireless device), in some cases, a wireless device may also operate in an RRC inactive state where the radio bearers with the network are suspended, but the AS context is still maintained by the wireless device and the wireless network, which helps enable quicker resumption back to the RRC connected state.

In some cases, when the wireless device is in the RRC connected state, the wireless device may continually monitor for the PDCCH transmission to the wireless device. Continually monitoring a channel can consume a substantial amount of power. For example, the RF front end and corresponding modem may need to remain powered on and one or more processors may be used to attempt to decode transmissions when monitoring the channel. To help reduce an amount of power used by wireless device, discontinuous reception (DRX) may be implemented in the RRC connected state. Using DRX, a wireless device may receive, from the wireless network, a schedule for when the wireless device should monitor the PDCCH and when the wireless device does not need to monitor the PDCCH. Together, an instance of time the wireless device should monitor the PDCCH, referred to as an on-duration, and an instance of time the wireless devices does not need to monitor the PDCCH, referred to as an off-duration, may be together comprise a DRX cycle. As the wireless device does not need to monitor the PDCCH during the off-duration, the wireless device may enter a relatively low power state (e.g., sleep, or other lower power state) as compared to the on-duration. For example, the wireless device may partially or completely power down the RF front end, modem, one or more processers, and/or other component that may be used to receive uplink transmissions during the off-duration. While monitoring the PDCCH during DRX on-durations reduces power consumption as compared to constantly monitoring the PDCCH, additional power savings can be had by not monitoring, e.g., skipping, the PDCCH during certain DRX on-durations.

Turning now toFIG.7, a timing diagram700illustrating receiving a physical downlink control channel (PDCCH) based on a WUS, in accordance with aspects of the present disclosure. Timing diagram700illustrates relationships between WUS716transmissions and PDCCH718transmissions over multiple DRX cycles704on a time axis702. As shown, the DRX cycles704includes a partial first DRX cycle which ends at time706, a second DRX cycle starts at time706and ends at time708, and a third DRX cycle starts at time708and ends at time710. The second DRX cycle and third DRX cycles include an on-duration712and an off-duration714, while the first DRX cycle includes an off-duration714. It may be understood that the first DRX cycle may include an on-duration712, but the on-duration712may have occurred prior to the time period illustrated inFIG.7. In some cases, a wireless device may be configured to monitor for a WUS716transmitted by a wireless node prior to an on-duration712in which a PDCCH718may be transmitted. In this example, WUS716A may be associated with and transmitted prior to PDCCH718A during a time offset720prior to an on-duration712A associated with the PDCCH718A. If the wireless device receives the WUS716A, the wireless device may monitor for the PDCCH718A during the on-duration712A. This process may be repeated for each DRX cycle. For example, the wireless device may monitor during a time offset720prior to on duration712B for a WUS. If the wireless device does not receive the WUS (e.g., a skipped WUS724A), the wireless device may not monitor for the PDCCH (e.g., a skipped PDCCH722A) in the next on-duration712B. For example, the wireless device may not start an on-duration timer during the next on-duration712B (e.g., monitoring occasion for the PDCCH). The wireless device may enter or remain in a sleep or lower power state for all or a portion of the next on-duration712B. The wireless device then repeats this process, monitoring for another WUS during a time offset720prior to another on-duration, and so forth.

A wireless device may receive, for example from a wireless node, a configuration message which configures connected mode DRX. In some cases, a configuration message may be received by a wireless device from a wireless network via a radio resource control (RRC) message. The configuration message may define the DRX cycles704, for example, by providing DRX cycles704timing information. In some cases, the configuration message may also include information about a WUS716. For example, the configuration message may indicate a time offset720from the start of a DRX on-duration712. The time offset720may define a WUS monitoring occasion time period prior to the DRX on-duration712in which the wireless device may monitor for the WUS716signal. In some cases, the time offset720may have a predefined duration. In other cases, the time offset720may have a configurable duration, for example, as indicated in the configuration message.

In some cases, the WUS716may be a relatively short and simple signal as compared to the PDCCH718. In some cases, a wireless device may have a dedicated, simplified, receiver for receiving the WUS716while using less power than a receiver for receiving the PDCCH718. In some cases, a wireless device may use the same receiver for receiving the WUS716and PDCCH718, but may be able to reduce an amount of power consumed by the receiver when receiving the WUS716, for example by turning off some portions of the receiver, processor, etc. While monitoring for the WUS716during a prescribed interval can reduce power consumption as compared to monitoring for the PDCCH718during a prescribed interval, additional power savings may be obtained if the wireless device could skip monitoring for the WUS716during one or more WUS monitoring occasions. Skipping the WUS transmission may benefit the wireless network. For example, the wireless node may be able to use the skipped WUS monitoring occasions to service other wireless devices.

In accordance with aspects of the present disclosure, a WUS may be enhanced (e.g., EWUS) by adding additional information to the WUS to indicate to the UE whether the UE can skip monitoring for the WUS in a future WUS monitoring occasion. In some cases, a WUS signal may be transmitted as a DCI message, such as a DCI format 2_6 message, and bits may be added to the DCI message, indicating whether future WUS monitoring occasions may be skipped and if so, how many future WUS monitoring occasions may be skipped. For example, a single bit may be added to indicate whether to allow WUS monitoring occasions to be skipped, and a second bit may be added to indicate how many WUS monitoring occasions may be skipped. In some cases, there may be one or more WUS skip modes of operation.

For example, in a first enhanced WUS skip mode of operation, the wireless device may determine that the wireless device can skip one or more future WUS monitoring occasions while monitoring for the PDCCH messages associated with the one or more skipped WUSs. In the first WUS skip mode, a single WUS can indicate that the wireless device should monitor for multiple PDCCH messages, but that it may skip monitoring for the WUS associated with those multiple PDCCH messages.

FIG.8is a timing diagram800illustrating a first WUS skip mode of operation, in accordance with aspects of the present disclosure. Timing diagram800also illustrates relationships between WUS816transmissions and PDCCH818transmissions over multiple DRX cycles804A-804F on a time axis802. In timing diagram800, DRX on and off durations as well as monitoring intervals, as compared toFIG.7, have been omitted for clarity.

In some cases, a WUS skip value may be encoded into the WUS816indicating whether or how many WUS monitoring occasions may be skipped. For example, the WUS skip value may be a bit added to the WUS816indicating whether the wireless device may skip a WUS monitoring occasion. In some cases, a WUS skip value of 0 may indicate that the wireless device may not skip a WUS monitoring occasion. In such cases the wireless device may then monitor for a PDCCH during the next on-duration and monitor for another WUS during the next WUS monitoring occasion, as discussed above with respect toFIG.7. In some cases, a WUS skip value of 1 may indicate that the wireless device may skip a next WUS monitoring occasion. For example, a wireless node may determine that it needs to transmit multiple PDCCH messages to the wireless device over multiple DRX cycles, such as if the wireless device is sending or receiving data over a period of time. The wireless node may then transmit a first WUS816A during a WUS monitoring occasion to the wireless device with an encoded skip value of 1. The wireless device may receive the first WUS816A during the WUS monitoring occasion and decode the WUS. Where the WUS skip value is one, the wireless device may determine that the wireless device may skip one WUS monitoring occasion and monitor for one additional PDCCH occasion in addition to the next PDCCH monitoring occasion. For example, the UE may monitor for a first PDCCH818A during the next on-duration in a second DRX cycle804B as well as a second PDCCH818B during the on-duration in a third DRX cycle804C (e.g., the on-duration right after the next on-duration), without monitoring for skipped WUS824B. After skipping WUS824B, the wireless device may resume monitoring for a WUS during the next WUS interval and receive a second WUS816B. This second WUS816B may also include a WUS skip value of 1 the wireless device may skip monitoring for skipped WUS824C while monitoring for PDCCH8180and818D. In some cases, if the wireless device does not receive the WUS, such as skipped WUS824A in a fifth DRX cycle804E, the wireless device may operate as described above with respect inFIG.7and not monitor for the PDCCH, such as skipped PDCCH822in a sixth DRX cycle804F.

In some cases, the first WUS skip mode may be extended to support skipping additional WUS monitoring occasions. In some cases, the WUS skip value may represent a number of WUS monitoring occasions that may be skipped. For example, as discussed above, a WUS skip value of 0 may indicate that the wireless device should not skip a WUS monitoring occasion, while a WUS skip value of 1 may indicate that the wireless device may skip one WUS monitoring occasion. In some cases, higher WUS skip values may be treated similarly. For example, a second bit may be added to a WUS, enabling up to 4 values (e.g., 3) to be encoded in the WUS skip value.

FIG.9is a timing diagram900illustrating a first WUS skip mode of operation, in accordance with aspects of the present disclosure. InFIG.9, a wireless device may receive a first WUS916A during the WUS monitoring occasion and decode the first WUS916A. In this example, the WUS skip value is two, and the wireless device may determine that the wireless device may skip monitoring for two skipped WUS924A,924B in DRX cycles904B and904C, respectively, and monitor for two additional PDCCH918B,918C in DRX cycles904C and904D, respectively, in addition to monitoring for the next PDCCH918A in DRX cycle904B. In some cases, if the wireless device does not receive the WUS, such as skipped WUS924C in a fourth DRX cycle804D, the wireless device may operate as described above with respect inFIGS.7and8and not monitor for the PDCCH, such as skipped PDCCH922in a fifth DRX cycle904E. Similarly, if the WUS skip value is three, the wireless device may skip monitoring for three skipped WUS monitoring occasions and monitor for three additional PDCCH monitoring occasions in addition to monitoring in the next PDCCH monitoring occasion. In some cases, a number of skipped WUS monitoring occasions may be limited as it may be difficult for a wireless node to accurately schedule that far in advance. For example, the number of skipped WUS monitoring occasions may be limited to 3.

In some cases, in a second WUS skip mode of operation, the wireless device may determine that the wireless device can skip one or more future WUS monitoring occasions along with the PDCCH monitoring occasions associated with the one or more skipped WUS monitoring occasions. This mode of operation may be useful if a wireless node determines that the wireless device does not need to send or receive data for a period of time. For example, a wireless node may determine that a wireless device is sending or receiving data periodically with relatively large gaps between transmissions, or the wireless node may have multiple, relatively small sets of non-time critical data for a wireless device, the wireless node may batch up the data and send the data to the wireless device all together. By reducing a number of transmissions, the wireless device may be able to reduce an amount of power consumption and stay in a lower power state longer.

In some cases, in this second WUS skip mode of operation, a WUS skip value may also be encoded into the WUS. In a manner similar to that discussed in conjunction withFIGS.7and8and the first WUS skip mode of operation, the WUS skip value may be encoded as one or two bits in the WUS. In some cases, a WUS skip value of 0 may indicate that the wireless device may not skip a WUS monitoring occasion. In some cases, a WUS skip value of one may indicate that the wireless device may skip one WUS monitoring occasion along with an associated PDCCH monitoring occasion. Similarly, a WUS skip value of two or three may indicate that the wireless device may skip a corresponding number of WUS monitoring occasions along with the respective, associated, PDCCH monitoring occasions.

FIG.10is a timing diagram1000illustrating a second WUS skip mode of operation, in accordance with aspects of the present disclosure. In a first example inFIG.10, a wireless device may receive and decode a first WUS1016A in a first DRX cycle1004A to determine that the WUS skip value is one. The wireless device may then determine that the wireless device may not monitor for a skipped WUS1024A in a second DRX cycle1004B. The wireless device may also not monitor for skipped PDCCH1022A in a third DRX cycle1004C associated with the skipped WUS1024A. The wireless device may still monitor for the next PDCCH1018A in the second DRX cycle1004B associated with the first WUS1016A.

In another example inFIG.10, the wireless device may decode a second WUS1016B in a third DRX cycle1004C to determine that the WUS skip value is two. The wireless device may then determine that the wireless device may not monitor for two WUS monitoring occasions, such as skipped WUS1024B and1024C. The wireless device may also not monitor for two skipped PDCCH1022B and1022C associated with skipped WUS1024B and1024C, respectively. Similarly, if the WUS skip value is three, the wireless device may skip monitoring for three skipped WUS monitoring occasions and monitor for three additional PDCCH monitoring occasions in addition to monitoring in the next PDCCH monitoring occasion. In some cases, additional bits may be added to allow for any number of WUS skip values to be specified. In some cases, the number of WUS skip values may be limited, such as to three WUS monitoring occasions, due to scheduling limitations.

In some cases, the WUS may include an indication of which WUS skip mode of operation to use. For example, the WUS may include a bit indicating whether the wireless device may operate under the first WUS skip mode, or the second WUS skip mode of operation. In some cases, the WUS skip mode of operation may be signaled to the wireless device using signaling different from the WUS. For example, the WUS skip mode may be indicated in a configuration message or dedicated signaling, such as a MAC CE or broadcast signaling for UEs associated with one or more wireless nodes.

In some cases, specific behaviors may be mapped to values of the WUS skip value. For example, WUS skip values may be mapped to one or more patterns for skipping WUS monitoring occasions, such as skipping every other monitoring occasion until changed. As another example, a default WUS skip value may be predefined, such as in a specification, and the default WUS skip value may be applied when no skip value is provided, or the default WUS skip value may always applied.

In some cases, the enhanced WUS may also be applied in the RRC idle and RRC inactive modes. For example, in the RRC inactive/idle modes, the wireless node may indicate, to the wireless device, a paging interval (e.g., a DRX cycle for paging). Further, the wireless device may be configured with a WUS monitoring occasion prior to the paging interval. The wireless node may transmit an enhanced WUS and indicate whether the wireless device can skip one or more future WUS monitoring occasions in a manner similar to that discussed above in conjunction withFIGS.8-10. Similarly, the enhanced WUS may indicate whether the wireless device may skip or more future paging intervals in a manner similar to that discussed above in conjunction withFIG.10.

FIGS.11A and11Billustrate a technique for power saving for a wireless device, in accordance with aspects of the present disclosure. InFIG.11A, exemplary wireless device behaviors1100are described. At step1102, a radio resource control (RRC) connection with a wireless system may be established. At step1104, an RRC connected mode may be entered based on the established RRC connection. For example, a wireless device may establish an RRC connection with a wireless node and the wireless mode may enter an RRC connected mode. In some cases, step1102and step1104may be optional. For example, the wireless device may be in an RRC idle mode. As another example, the wireless device may have established an RRC connection with the wireless system, but is in an RRC inactive mode. At step1106, configuration information may be received from the wireless node indicating a discontinuous reception (DRX) cycle time, a DRX on time period, and an offset time. For example, the wireless device may receive a configuration message including information defining a DRX cycle and WUS timing information. At step1108, a WUS monitoring occasion may be determined for a DRX cycle based on the offset time and the DRX on time period. For example, a WUS monitoring occasion may be determined based on the offset time from the DRX on-duration. At step1110, the wireless device may monitor, during a first DRX cycle, for a WUS during the WUS monitoring occasion associated with the first DRX cycle. For example, the wireless device may monitor for a WUS during a first WUS monitoring occasion. At step1112, the wireless device may receive, from the wireless system, the WUS during the WUS monitoring occasion. For example, the wireless device may receive a DCI message indicating that the wireless device should monitor the PDCCH during a next PDCCH monitoring occasion. At step1114, the wireless device may determine that the WUS indicates that the wireless device skip one or more future WUS monitoring occasions. For example, the WUS may include an encoded WUS skip value indicating that the wireless device may skip one or more WUS monitoring occasions. At step1116, the wireless device may skip monitoring for the WUS based on the indicated skipped one or more future WUS monitoring occasions.

FIG.11Bdescribes optional behaviors of the exemplary wireless device behaviors1100. At step1120, the WUS may indicate that the wireless device skip one or more WUS monitoring occasions and PDCCH monitoring instances associated with the one or more WUS monitoring occasions. For example, in the second WUS skip mode of operation, the wireless device may skip one or more WUS monitoring occasions. The wireless device may also skip one or more PDCCH monitoring occasions associated with the skipped one or more WUS monitoring occasions. At step1122, the WUS may indicate that the wireless device skip one or more WUS monitoring occasions associated with the one or more WUS monitoring occasions. For example, in the first WUS skip mode of operation, the wireless device may skip one or more WUS monitoring occasions. In some cases, for either the first or second WUS skip mode of operation, the WUS may include an encoded value indicating a number of WUS monitoring occasions to skip. In some cases, the WUS may include an indication whether to skip monitoring a PDCCH instance associated with a WUS monitoring occasion.

FIGS.12A and12Billustrate a technique for power saving, by a wireless node, in accordance with aspects of the present disclosure. InFIG.12A, exemplary wireless node behaviors1200are described. At step1202, a radio resource control (RRC) connection with a wireless device may be established. For example, a wireless device may establish an RRC connection with the wireless node and the wireless device may enter an RRC connected mode. At step1204, configuration information may be transmitted to the wireless node indicating a discontinuous reception (DRX) cycle time, a DRX on time period, and an offset time. For example, the wireless node may determine a DRX cycle and WUS timing information for the wireless device. At step1206, a wake-up signal (WUS) monitoring occasion for a DRX cycle, the WUS based on the offset time, and the DRX on time period may be transmitted to the wireless device. For example, the wireless node may transmit a configuration message indicating the determined DRX cycle and WUS timing information to the wireless device. At step1208, a determination may be made that the wireless device can skip monitoring one or more future WUS monitoring occasions. For example, the wireless node may determine that the wireless node has data to transmit to the wireless device in two or more PDCCH messages. The wireless node may determine a number of PDCCH messages to use, for example based on an amount of data to transmit. The number of future WUS monitoring occasions that may be skipped may be based on the number of PDCCH messages. As another example, the wireless node may determine not to transmit a number of PDCCH messages to the wireless device. The number of future WUS monitoring occasions that may be skipped may be based on the determined number of PDCCH messages not to transmit.

At step1210, during a first DRX cycle, a WUS for the wireless device may be transmitted during the WUS monitoring occasion associated with the first DRX cycle, the WUS indicating that the wireless device can skip the one or more future WUS monitoring occasions. For example, the WUS may be transmitted as a DCI message. In some cases, the WUS may also indicate whether to skip monitoring a PDCCH instance associated with a WUS monitoring occasion. In some cases, the WUS includes an encoded value indicating a number of WUS monitoring occasions and PDCCH monitoring instances associated with the multiple WUS monitoring occasions based on a pattern. At step1212, transmitting the WUS to the wireless device during the one or more future WUS monitoring occasions may be skipped.

FIG.12Bdescribes optional behaviors of the exemplary wireless node behaviors1200. At step1220, the wireless node may determine that the wireless node has data to transmit to the wireless device in two or more PDCCH messages. For example, the wireless node may have data for the wireless device that requires multiple PDCCH messages to transmit. The wireless node may, for example in the first WUS skip mode of operation, indicate to the wireless device to skip one or more WUS monitoring occasions while still monitoring multiple PDCCH monitoring occasions. At step1222, the wireless node determines a number of PDCCH messages to transmit. At step1224, the wireless node may determine not to transmit a number of PDCCH messages to the wireless device. For example, the wireless node may determine that a that the wireless device can skip one or more future WUS monitoring occasions along with the PDCCH monitoring occasions associated with the one or more skipped WUS monitoring occasions.

Note that dashed lines around boxes and dashed arrows inFIGS.11B and12Bindicate optional steps that may be performed.

EXAMPLES

In the following sections, further exemplary aspects are provided.

According to Example 1, a method for power saving for a wireless device, comprising: establishing a radio resource control (RRC) connection with a wireless system; entering an RRC connected mode based on the established RRC connection; receiving, from the wireless system, configuration information indicating a discontinuous reception (DRX) cycle time, a DRX on time period, and an offset time; determining an enhanced wake-up signal (EWUS) monitoring occasion for a DRX cycle based on the offset time and the DRX on time period; monitoring, during a first DRX cycle, for an EWUS during the EWUS monitoring occasion associated with the first DRX cycle; receiving, from the wireless system, the EWUS during the EWUS monitoring occasion; determining that the EWUS indicates that the wireless device skip one or more future EWUS monitoring occasions; and skipping monitoring for the EWUS based on the indicated skipped one or more future EWUS monitoring occasions.

Example 2 comprises the subject matter of example 1 and further comprises: determining the EWUS indicates that the wireless device monitor a physical downlink control channel (PDCCH) instance in a next DRX cycle, wherein the PDCCH instance is associated with the EWUS monitoring occasion; and monitoring the PDCCH instance in the next DRX cycle based on the EWUS.

Example 3 comprises the subject matter of example 2 and further comprises skipping monitoring a PDCCH instance associated with a next EWUS monitoring occasion.

Example 4 comprises the subject matter of example 1, wherein the EWUS indicates that the wireless device skip multiple EWUS monitoring occasions and PDCCH monitoring instances associated with the multiple EWUS monitoring occasions, and wherein skipping monitoring comprises skipping monitoring for the EWUS in multiple DRX cycles based on the EWUS.

Example 5 comprises the subject matter of example 4, wherein the EWUS includes an encoded value indicating a number of EWUS monitoring occasions to skip.

Example 6 comprises the subject matter of example 5, wherein the encoded value is encoded in two bits of a downlink control message.

Example 7 comprises the subject matter of example 1, wherein the EWUS indicates that the wireless device skip multiple EWUS monitoring occasions, and wherein skipping monitoring comprises skipping monitoring for the EWUS in multiple DRX cycles based on the EWUS.

Example 8 comprises the subject matter of example 7 and further comprising: determining the EWUS indicates that the wireless device monitor physical downlink control channel (PDCCH) instances in the multiple DRX cycles; and monitoring the PDCCH instances in the multiple DRX cycles based on the indication based on the EWUS.

Example 9 comprises the subject matter of example 7, wherein the EWUS includes an encoded value indicating a number of EWUS monitoring occasions to skip.

Example 10 comprises the subject matter of example 1, wherein the EWUS indicates whether to skip monitoring a PDCCH instance associated with a EWUS monitoring occasion.

Example 11 comprises the subject matter of example 1, wherein the EWUS is transmitted in a downlink control message.

Example 12 comprises the subject matter of example 1, wherein the EWUS is associated with a predetermined default number of EWUS monitoring occasions to skip.

According to Example 13, a method for power saving for a wireless device, comprising: receiving, from the wireless system, configuration information indicating a discontinuous reception (DRX) cycle time, a DRX on time period, and an offset time; determining an enhanced wake-up signal (EWUS) monitoring occasion for a DRX cycle based on the offset time and the DRX on time period; monitoring, during a first DRX cycle, for an EWUS during the EWUS monitoring occasion associated with the first DRX cycle; receiving, from the wireless system, the EWUS during the EWUS monitoring occasion; determining that the EWUS indicates that the wireless device skip one or more future EWUS monitoring occasions; and skipping monitoring for the EWUS based on the indicated skipped one or more future EWUS monitoring occasions.

Example 14 comprises the subject matter of example 13, wherein the wireless device is in an RRC idle mode.

Example 15 comprises the subject matter of example 13, wherein the wireless device is in an RRC inactive mode.

According to Example 16, a wireless device comprising: an antenna; a radio operably coupled to the antenna; and a processor operably coupled to the radio; wherein the wireless device is configured to: establish a radio resource control (RRC) connection with a wireless system; enter an RRC connected mode based on the established RRC connection; receive, from the wireless system, configuration information indicating a discontinuous reception (DRX) cycle time, a DRX on time period, and an offset time; determine an enhanced wake-up signal (EWUS) monitoring occasion for a DRX cycle based on the offset time and the DRX on time period; monitor, during a first DRX cycle, for an EWUS during the EWUS monitoring occasion associated with the first DRX cycle; receive, from the wireless system, the EWUS during the EWUS monitoring occasion; determine that the EWUS indicates that the wireless device skip one or more future EWUS monitoring occasions; and skip monitoring for the EWUS based on the indicated skipped one or more future EWUS monitoring occasions.

Example 17 comprises the subject matter of example 16, wherein the wireless device is further configured to: determine the EWUS indicates that the wireless device monitor a physical downlink control channel (PDCCH) instance in a next DRX cycle, wherein the PDCCH instance is associated with the EWUS monitoring occasion; and monitor the PDCCH instance in the next DRX cycle based on the EWUS.

Example 18 comprises the subject matter of example 17, wherein the wireless device is further configured to skip monitoring a PDCCH instance associated with a next EWUS monitoring occasion.

Example 19 comprises the subject matter of example 16, wherein the EWUS indicates that the wireless device skip multiple EWUS monitoring occasions and PDCCH monitoring instances associated with the multiple EWUS monitoring occasions, and wherein the wireless device is further configured to skip monitoring by skipping monitoring for the EWUS in multiple DRX cycles based on the EWUS.

Example 20 comprises the subject matter of example 16, wherein the EWUS includes an encoded value indicating a number of EWUS monitoring occasions to skip.

Example 21 comprises the subject matter of example 20, wherein the encoded value is encoded in two bits of a downlink control message.

Example 22 comprises the subject matter of example 16, wherein the EWUS indicates that the wireless device skip multiple EWUS monitoring occasions, and wherein the wireless device is further configured to skip monitoring by skipping monitoring for the EWUS in multiple DRX cycles based on the EWUS.

Example 23 comprises the subject matter of example 22, wherein the wireless device is further configured to: determine the EWUS indicates that the wireless device monitor physical downlink control channel (PDCCH) instances in the multiple DRX cycles; and monitor the PDCCH instances in the multiple DRX cycles based on the indication based on the EWUS.

Example 24 comprises the subject matter of example 22, wherein the EWUS includes an encoded value indicating a number of EWUS monitoring occasions to skip.

Example 25 comprises the subject matter of example 16, wherein the EWUS indicates whether to skip monitoring a PDCCH instance associated with a EWUS monitoring occasion.

Example 26 comprises the subject matter of example 16, wherein the EWUS is transmitted in a downlink control message.

Example 27 comprises the subject matter of example 16, wherein the EWUS is associated with a predetermined default number of EWUS monitoring occasions to skip.

According to Example 28, a method for power saying for a wireless device, comprising: receiving, from the wireless system, configuration information indicating a discontinuous reception (DRX) cycle time, a DRX on time period, and an offset time; determining an enhanced wake-up signal (EWUS) monitoring occasion for a DRX cycle based on the offset time and the DRX on time period; monitoring, during a first DRX cycle, for an EWUS during the EWUS monitoring occasion associated with the first DRX cycle; receiving, from the wireless system, the EWUS during the EWUS monitoring occasion; determining that the EWUS indicates that the wireless device skip one or more future EWUS monitoring occasions; and skipping monitoring for the EWUS based on the indicated skipped one or more future EWUS monitoring occasions.

Example 29 comprises the subject matter of example 28, wherein the wireless device is in an RRC idle mode.

Example 30 comprises the subject matter of example 28, wherein the wireless device is in an RRC inactive mode.

According to Example 31, a method for power saving, comprising establishing a radio resource control (RRC) connection with a wireless device; transmitting, to the wireless device, configuration information indicating a discontinuous reception (DRX) cycle time, a DRX on time period, and an offset time; transmitting an enhanced wake-up signal (EWUS) monitoring occasion for a DRX cycle, the EWUS monitoring occasion based on the offset time and the DRX on time period; determining that the wireless device can skip monitoring one or more future EWUS monitoring occasions; transmitting, during a first DRX cycle, a EWUS for the wireless device during the EWUS monitoring occasion associated with the first DRX cycle, the EWUS indicating that the wireless device can skip the one or more future EWUS monitoring occasions; and skipping transmitting the EWUS to the wireless device during the one or more future EWUS monitoring occasions.

Example 32 comprises the subject matter of Example 31, wherein the EWUS indicates that the wireless device monitor a physical downlink control channel (PDCCH) instance in a next DRX cycle, wherein the PDCCH instance is associated with the EWUS monitoring occasion.

Example 33 comprises the subject matter of Example 31, and further comprising: determining to transmit data to the wireless device in two or more physical downlink control channel (PDCCH) messages; and determining a number of PDCCH messages to transmit, and wherein the one or more future EWUS monitoring occasions are determined based on the number of PDCCH messages to transmit.

Example 34 comprises the subject matter of Example 33, wherein the EWUS includes an encoded value indicating a number of EWUS monitoring occasions to skip.

Example 35 comprises the subject matter of Example 31, wherein skipping transmitting the EWUS comprises skipping transmitting the EWUS in a next EWUS monitoring occasion, and further comprising skipping transmitting a PDCCH message associated with the next EWUS monitoring occasion.

Example 36 comprises the subject matter of example 31, further comprising determining not to transmit a first number of physical downlink control channel (PDCCH) messages to the wireless device, wherein the first number is two or more, wherein the EWUS indicates the first number of skipped EWUS transmissions to the wireless device, and wherein skipping transmitting the EWUS includes skipping transmitting a PDCCH message associated with the skipped EWUS transmission.

Example 37 comprises the subject matter of example 31, wherein the EWUS includes an encoded value indicating a number of EWUS monitoring occasions and PDCCH monitoring instances associated with the multiple EWUS monitoring occasions to skip.

Example 38 comprises the subject matter of Example 31, wherein the EWUS is transmitted in a downlink control message.

Example 39 comprises the subject matter of Example 31, wherein the EWUS indicates whether to skip monitoring a PDCCH instance associated with a EWUS monitoring occasion.

Example 40 comprises the subject matter of Example 31, wherein the EWUS is associated with a predetermined default number of EWUS monitoring occasions to skip.

According to Example 41, a device comprising: an antenna; a radio operably coupled to the antenna; and a processor operably coupled to the radio; wherein the device is configured to: establish a radio resource control (RRC) connection with a wireless device; transmit, to the wireless device, configuration information indicating a discontinuous reception (DRX) cycle time, a DRX on time period, and an offset time; transmit an enhanced wake-up signal (EWUS) monitoring occasion for a DRX cycle, the EWUS monitoring occasion based on the offset time and the DRX on time period; determine that the wireless device can skip monitoring one or more future EWUS monitoring occasions; transmit, during a first DRX cycle, a EWUS for the wireless device during the EWUS monitoring occasion associated with the first DRX cycle, the EWUS indicating that the wireless device can skip the one or more future EWUS monitoring occasions; and skip transmitting the EWUS to the wireless device during the one or more future EWUS monitoring occasions.

Example 42 comprises the subject matter of Example 41, wherein the EWUS indicates that the wireless device monitor a physical downlink control channel (PDCCH) instance in a next DRX cycle, wherein the PDCCH instance is associated with the EWUS monitoring occasion.

Example 43 comprises the subject matter of Example 41, wherein the device is further configured to: determine to transmit data to the wireless device in two or more physical downlink control channel (PDCCH) messages; and determine a number of PDCCH messages to transmit, and wherein the one or more future EWUS monitoring occasions are determined based on the number of PDCCH messages to transmit.

Example 44 comprises the subject matter of Example 43, wherein the EWUS includes an encoded value indicating a number of EWUS monitoring occasions to skip.

Example 45 comprises the subject matter of Example 41, wherein the device is configured to skip transmitting the EWUS by skipping transmitting the EWUS in a next EWUS monitoring occasion; and wherein the device is further configured to skip transmitting a PDCCH message associated with the next EWUS monitoring occasion.

Example 46 comprises the subject matter of Example 41, wherein the device is further configured to determine not to transmit a first number of physical downlink control channel (PDCCH) messages to the wireless device, wherein the first number is two or more, wherein the EWUS indicates the first number of skipped EWUS transmissions to the wireless device, and wherein skipping transmitting the EWUS includes skipping transmitting a PDCCH message associated with the skipped EWUS transmission.

Example 47 comprises the subject matter of Example 41, wherein the EWUS includes an encoded value indicating a number of EWUS monitoring occasions and PDCCH monitoring instances associated with the multiple EWUS monitoring occasions to skip.

Example 48 comprises the subject matter of Example 41, wherein the EWUS is transmitted in a downlink control message.

Example 49 comprises the subject matter of Example 41, wherein the EWUS indicates whether to skip monitoring a PDCCH instance associated with a EWUS monitoring occasion.

Example 50 comprises the subject matter of Example 41, wherein the EWUS is associated with a predetermined default number of EWUS monitoring occasions to skip.

According to Example 51, a non-transitory computer readable medium comprising computer readable code executable by a processor to: establish a radio resource control (RRC) connection with a wireless device; transmit, to the wireless device, configuration information indicating a discontinuous reception (DRX) cycle time, a DRX on time period, and an offset time; transmit an enhanced wake-up signal (EWUS) monitoring occasion for a DRX cycle, the EWUS monitoring occasion based on the offset time and the DRX on time period; determine that the wireless device can skip monitoring one or more future EWUS monitoring occasions; transmit, during a first DRX cycle, an EWUS for the wireless device during the EWUS monitoring occasion associated with the first DRX cycle, the EWUS indicating that the wireless device can skip the one or more future EWUS monitoring occasions; and skip transmitting the EWUS to the wireless device during the one or more future EWUS monitoring occasions.

Example 52 comprises the subject matter of Example 51, wherein the EWUS indicates that the wireless device monitor a physical downlink control channel (PDCCH) instance in a next DRX cycle, wherein the PDCCH instance is associated with the EWUS monitoring occasion.

Example 53 comprises the subject matter of Example 51, wherein the device is further configured to: determine to transmit data to the wireless device in two or more physical downlink control channel (PDCCH) messages; and determine a number of PDCCH messages to transmit, and wherein the one or more future EWUS monitoring occasions are determined based on the number of PDCCH messages to transmit.

Example 54 comprises the subject matter of Example 53, wherein the EWUS includes an encoded value indicating a number of EWUS monitoring occasions to skip.

Example 55 comprises the subject matter of Example 51, wherein the device is configured to skip transmitting the EWUS by skipping transmitting the EWUS in a next EWUS monitoring occasion; and wherein the device is further configured to skip transmitting a PDCCH message associated with the next EWUS monitoring occasion.

Example 56 comprises the subject matter of Example 51, wherein the device is further configured to determine not to transmit a first number of physical downlink control channel (PDCCH) messages to the wireless device, wherein the first number is two or more, wherein the EWUS indicates the first number of skipped EWUS transmissions to the wireless device, and wherein skipping transmitting the EWUS includes skipping transmitting a PDCCH message associated with the skipped EWUS transmission.

Example 57 comprises the subject matter of Example 51, wherein the EWUS includes an encoded value indicating a number of EWUS monitoring occasions and PDCCH monitoring instances associated with the multiple EWUS monitoring occasions to skip.

Example 58 comprises the subject matter of Example 51, wherein the EWUS is transmitted in a downlink control message.

Example 59 comprises the subject matter of Example 51, wherein the EWUS indicates whether to skip monitoring a PDCCH instance associated with a EWUS monitoring occasion.

Example 60 comprises the subject matter of Example 51, wherein the EWUS is associated with a predetermined default number of EWUS monitoring occasions to skip.

According to Example 61, a method that includes any action or combination of actions as substantially described herein in the Detailed Description.

According to Example 62, a method as substantially described herein with reference to each or any combination of the Figures included herein or with reference to each or any combination of paragraphs in the Detailed Description.

According to Example 63, a wireless device configured to perform any action or combination of actions as substantially described herein in the Detailed Description as included in the wireless device.

According to Example 64, a wireless station configured to perform any action or combination of actions as substantially described herein in the Detailed Description as included in the wireless station.

According to Example 65, a non-volatile computer-readable medium that stores instructions that, when executed, cause the performance of any action or combination of actions as substantially described herein in the Detailed Description.

According to Example 66, an integrated circuit configured to perform any action or combination of actions as substantially described herein in the Detailed Description.

Yet another exemplary aspect may include a method, comprising, by a device, performing any or all parts of the preceding Examples.

A yet further exemplary aspect may include a non-transitory computer-accessible memory medium comprising program instructions which, when executed at a device, cause the device to implement any or all parts of any of the preceding Examples.

A still further exemplary aspect may include a computer program comprising instructions for performing any or all parts of any of the preceding Examples.

Yet another exemplary aspect may include an apparatus comprising means for performing any or all of the elements of any of the preceding Examples.

Still another exemplary aspect may include an apparatus comprising a processor configured to cause a device to perform any or all of the elements of any of the preceding Examples.