CN117204056A - Discontinuous reception of short cadence - Google Patents

Abstract

Various aspects of the present disclosure relate generally to wireless communications. In some aspects, a User Equipment (UE) may obtain a Discontinuous Reception (DRX) nipple value corresponding to a number of hertz (Hz). The UE may sleep as part of a DRX cycle. The UE may begin waking up at a subframe based at least in part on the DRX short cadence value and a subframe identifier of the subframe. Many other aspects are described.

Description

Discontinuous reception of short cadence

Cross Reference to Related Applications

This patent application claims priority from U.S. patent application Ser. No. 17/301,650, entitled "DISCONTINUOUS RECEPTION SHORT CADENCE", filed on 9 at 4 months of 2021, and U.S. non-provisional patent application Ser. No. 17/378,056, entitled "DISCONTINUOUS RECEPTION SHORT CADENCE", filed on 16 months of 2021, which are expressly incorporated herein by reference.

Technical Field

Aspects of the present disclosure relate generally to wireless communications and techniques and apparatus for discontinuous reception using a nipple value.

Background

Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. A typical wireless communication system may employ multiple-access techniques capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple-access techniques include Code Division Multiple Access (CDMA) systems, time Division Multiple Access (TDMA) systems, frequency Division Multiple Access (FDMA) systems, orthogonal Frequency Division Multiple Access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-advanced is an enhanced set of Universal Mobile Telecommunications System (UMTS) mobile standards promulgated by the third generation partnership project (3 GPP).

A wireless network may include a plurality of Base Stations (BSs) capable of supporting communication for several User Equipments (UEs). The UE may communicate with the BS via the downlink and uplink. "downlink" or "forward link") refers to the communication link from the BS to the UE, and "uplink" or "reverse link") refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a node B, gNB, an Access Point (AP), a radio head, a transmission-reception point (TRP), a New Radio (NR) BS, a 5G node B, and the like.

The multiple access techniques described above have been employed in various telecommunications standards to provide a common protocol that enables different user devices to communicate at the urban, national, regional, and even global levels. NR (which may also be referred to as 5G) is an enhancement set to the LTE mobile standard promulgated by 3 GPP. NR is designed to better support mobile broadband internet access by improving spectral efficiency, reducing costs, improving services, utilizing new spectrum, and using Orthogonal Frequency Division Multiplexing (OFDM) with Cyclic Prefix (CP) on the Downlink (DL) (CP-OFDM), CP-OFDM and/or SC-FDM (e.g., also known as discrete fourier transform spread OFDM (DFT-s-OFDM)) on the Uplink (UL) to integrate with other open standards, as well as support beamforming, multiple Input Multiple Output (MIMO) antenna technology, and carrier aggregation. With the increasing demand for mobile broadband access, further improvements in LTE, NR and other radio access technologies remain useful.

Disclosure of Invention

In some aspects, a method of wireless communication performed by a User Equipment (UE) includes obtaining a Discontinuous Reception (DRX) burst value corresponding to a number of hertz (Hz), sleeping as part of a DRX cycle, and starting waking up at a subframe based at least in part on the DRX burst value and a subframe identifier of the subframe.

In some aspects, a method of wireless communication performed by a base station includes preparing communication with a UE according to a DRX short cycle value corresponding to a number of Hz, and beginning to transmit data bursts to the UE at a subframe according to a DRX cycle based at least in part on the DRX short cycle value and a subframe identifier of the subframe.

In some aspects, a method of wireless communication performed by a UE includes obtaining a DRX nipple value corresponding to a number of Hz, dormancy as part of a DRX cycle, and starting waking up at a time slot based at least in part on the DRX nipple value and a time slot identifier of the time slot.

In some aspects, a method of wireless communication performed by a base station includes preparing communication with a UE according to a DRX nipple value corresponding to Hz, and starting to transmit data bursts to the UE at a time slot according to a DRX cycle based at least in part on the DRX nipple value and a slot identifier of the time slot.

In some aspects, a UE for wireless communication includes a memory and one or more processors coupled to the memory, the memory including instructions executable by the one or more processors to cause the UE to obtain a DRX short burst value corresponding to a number of Hz, sleep as part of a DRX cycle, and begin waking up at a subframe based at least in part on the DRX short burst value and a subframe identifier of the subframe.

In some aspects, a base station for wireless communication includes a memory and one or more processors coupled to the memory, the memory including instructions executable by the one or more processors to cause the base station to prepare for communication with a UE according to a DRX short burst value corresponding to a number of Hz, and to begin transmitting data bursts to the UE at subframes according to a DRX cycle based at least in part on the DRX short burst value and a subframe identifier of the subframe.

In some aspects, a UE for wireless communication includes a memory and one or more processors coupled to the memory, the memory including instructions executable by the one or more processors to cause the UE to obtain a DRX nipple value corresponding to a number of Hz, sleep as part of a DRX cycle, and begin waking up at a time slot based at least in part on the DRX nipple value and a time slot identifier of the time slot.

In some aspects, a base station for wireless communications includes a memory and one or more processors coupled to the memory, the memory including instructions executable by the one or more processors to cause the base station to prepare for communications with a UE according to a DRX nipple value corresponding to Hz, and to begin transmitting data bursts to the UE at a time slot according to a DRX cycle based at least in part on the DRX nipple value and a slot identifier of the time slot.

In some aspects, a non-transitory computer-readable medium stores one or more instructions for wireless communication that, when executed by one or more processors of a UE, cause the UE to obtain a DRX short burst value corresponding to a number of Hz, sleep as part of a DRX cycle, and begin waking up at a subframe based at least in part on the DRX short burst value and a subframe identifier of the subframe.

In some aspects, a non-transitory computer-readable medium stores one or more instructions for wireless communication that, when executed by one or more processors of a base station, cause the base station to prepare for communication with a UE according to a DRX short burst value corresponding to a number of Hz, and to begin transmitting data bursts to the UE at a subframe according to a DRX cycle based at least in part on the DRX short burst value and a subframe identifier of the subframe.

In some aspects, a non-transitory computer-readable medium stores one or more instructions for wireless communication that, when executed by one or more processors of a UE, cause the UE to obtain a DRX nipple value corresponding to a number of Hz, sleep as part of a DRX cycle, and begin waking up at a slot based at least in part on the DRX nipple value and a slot identifier k of the slot.

In some aspects, a non-transitory computer-readable medium stores one or more instructions for wireless communication that, when executed by one or more processors of a base station, cause the base station to prepare for communication with a UE according to a DRX nipple value corresponding to Hz, and to begin transmitting data bursts to the UE at a time slot according to a DRX cycle based at least in part on the DRX nipple value and a time slot identifier of the time slot.

In some aspects, an apparatus for wireless communications includes means for obtaining a DRX short cycle value corresponding to a number of Hz, means for sleeping as part of a DRX cycle, and means for starting waking up at a subframe based at least in part on the DRX short cycle value and a subframe identifier of the subframe.

In some aspects, an apparatus for wireless communications includes means for preparing communications with a UE in accordance with a DRX short cycle value corresponding to a Hz number, and means for starting transmitting data bursts to the UE at a subframe in accordance with a DRX cycle based at least in part on the DRX short cycle value and a subframe identifier of the subframe.

In some aspects, an apparatus for wireless communications includes means for obtaining a DRX nipple value corresponding to a number of Hz, means for sleeping as part of a DRX cycle, and means for starting waking at a slot based at least in part on the DRX nipple value and a slot identifier of the slot.

In some aspects, an apparatus for wireless communication includes means for preparing communication with a UE according to a DRX nipple value corresponding to Hz, and means for starting to transmit a data burst to the UE at a time slot according to a DRX cycle based at least in part on the DRX nipple value and a slot identifier of the time slot.

Aspects generally include a method, apparatus, system, computer program product, non-transitory computer readable medium, user device, base station, wireless communication device, and/or processing system as substantially described herein with reference to and as illustrated by the accompanying drawings and description.

The foregoing has outlined rather broadly the features and technical advantages of examples in accordance with the present disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The conception and specific examples disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The features of the concepts disclosed herein, including their organization and method of operation, together with associated advantages will be better understood from the following description when considered in connection with the accompanying drawings. Each of the figures is provided for the purpose of illustration and description, and is not provided as a definition of the limits of the claims.

While aspects are described in this disclosure by way of illustration of some examples, those skilled in the art will appreciate that such aspects may be implemented in many different arrangements and scenarios. The techniques described herein may be implemented using different platform types, devices, systems, shapes, sizes, and/or packaging arrangements. For example, some aspects may be implemented via an integrated chip embodiment or other non-module component based device (e.g., an end user device, a vehicle, a communication device, a computing device, industrial equipment, retail/procurement devices, medical devices, or devices that support artificial intelligence). Aspects may be implemented in a chip-level component, a modular component, a non-chip-level component, a device-level component, or a system-level component. The apparatus incorporating the described aspects and features may include additional components and features for practicing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals may include a number of components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processor(s), interleavers, adders, or summers). It is intended that the aspects described herein may be practiced with a wide variety of devices, components, systems, distributed arrangements, or end user devices of different sizes, shapes, and configurations.

Drawings

So that the manner in which the above recited features of the present disclosure can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects. The same reference numbers in different drawings may identify the same or similar elements.

Fig. 1 is a schematic diagram illustrating an example of a wireless network according to the present disclosure.

Fig. 2 is a schematic diagram illustrating an example of a base station communicating with a User Equipment (UE) in a wireless network according to the present disclosure.

Fig. 3 is a schematic diagram illustrating an example of a device designed for low latency applications according to the present disclosure.

Fig. 4 is a schematic diagram illustrating an example of low delay traffic and power states according to the present disclosure.

Fig. 5 illustrates an example of misalignment of Discontinuous Reception (DRX) cycles and augmented reality traffic periodicity according to the present disclosure.

Fig. 6 illustrates an example of an anchor period with a skip DRX period according to the present disclosure.

Fig. 7 illustrates an example of a DRX configuration with dynamic offset adjustment supporting DRX techniques with non-uniform cycle duration according to the present disclosure.

Fig. 8 is a schematic diagram illustrating an example of using a nipple value for DRX according to the present disclosure.

Fig. 9 is a diagram illustrating an example of using short cadence values of DRX for slot positions according to the present disclosure.

Fig. 10 is a schematic diagram illustrating an example of using a nipple value for DRX according to the present disclosure.

Fig. 11 is a schematic diagram illustrating an example of using different nipple values according to the present disclosure.

Fig. 12 is a schematic diagram illustrating an example process performed, for example, by a UE, in accordance with the present disclosure.

Fig. 13 is a schematic diagram illustrating an example process performed, for example, by a base station, according to the present disclosure.

Fig. 14 is a schematic diagram illustrating an example process performed, for example, by a UE, in accordance with the present disclosure.

Fig. 15 is a schematic diagram illustrating an example process performed, for example, by a base station, according to the present disclosure.

Fig. 16-19 are block diagrams of example apparatuses for wireless communication according to the present disclosure.

Detailed Description

Aspects of the present disclosure are described more fully below with reference to the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Based on the teachings herein one skilled in the art should appreciate that the scope of the disclosure is intended to cover any aspect of the disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of the disclosure. For example, an apparatus may be implemented or a method of practice may be practiced using any number of the aspects set forth herein. In addition, the scope of the present disclosure is intended to cover such an apparatus or method as practiced with other structure, function, or structure plus function in addition to or other than the illustrated aspects of the present disclosure. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims.

Several aspects of the telecommunications system will now be presented with reference to various apparatus and techniques. These devices and techniques will be described in the following detailed description and are illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination of both. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

It should be noted that although aspects may be described herein using terms commonly associated with 5G or NR Radio Access Technologies (RATs), aspects of the present disclosure may be applied to other RATs, such as 3G RATs, 4G RATs, and/or RATs after 5G (e.g., 6G).

Fig. 1 is a schematic diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be or may include elements of a 5G (NR) network and/or an LTE network, etc. Wireless network 100 may include a plurality of base stations 110 (as shown by BS110a, BS110b, BS110c, and BS110 d) and other network entities. A Base Station (BS) is an entity that communicates with User Equipment (UE) and may also be referred to as an NR BS, node B, gNB, 5G Node B (NB), access point, transmission-reception point (TRP), etc. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" can refer to a coverage area of a BS and/or a BS subsystem serving the coverage area, depending on the context in which the term is used.

The BS may provide communication coverage for a macrocell, a picocell, a femtocell, and/or another type of cell. A macrocell can cover a relatively large geographic area (e.g., several kilometers in radius) and can allow unrestricted access by UEs with service subscription. The pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a Closed Subscriber Group (CSG)). The BS for the macro cell may be referred to as a macro BS. The BS for the pico cell may be referred to as a pico BS. The BS for the femto cell may be referred to as a femto BS or a home BS. In the example shown in fig. 1, BS110a may be a macro BS for macro cell 102a, BS110b may be a pico BS for pico cell 102b, and BS110c may be a femto BS for femto cell 102 c. The BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "node B", "5G NB" and "cell" may be used interchangeably herein.

In some aspects, the cells may not necessarily be stationary, and the geographic area of the cells may move according to the positioning of the mobile BS. In some aspects, BSs may be interconnected to each other and/or to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces, such as direct physical connections or virtual networks, using any suitable transport network.

The wireless network 100 may also include relay stations. A relay station is an entity capable of receiving a transmission of data from an upstream station (e.g., a BS or UE) and sending the transmission of data to a downstream station (e.g., a UE or BS). The relay station may also be a UE capable of relaying transmissions for other UEs. In the example shown in fig. 1, relay BS110d may communicate with macro BS110a and UE 120d to facilitate communications between BS110a and UE 120 d. The relay BS may also be referred to as a relay station, a relay base station, a relay, etc.

The wireless network 100 may be a heterogeneous network including different types of BSs (such as macro BS, pico BS, femto BS, relay BS, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, femto BS, and relay BS may have lower transmit power levels (e.g., 0.1 to 2 watts).

The network controller 130 may be coupled to a set of BSs and may provide coordination and control for the BSs. The network controller 130 may communicate with the BS via a backhaul. BSs may also communicate with each other directly or indirectly, e.g., via a wireless or wired backhaul.

UEs 120 (e.g., 120a, 120b, 120 c) may be dispersed throughout wireless network 100, and each UE may be stationary or mobile. A UE may also be called an access terminal, mobile station, subscriber unit, station, etc. The UE may be a cellular telephone (e.g., a smart phone), a Personal Digital Assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a Wireless Local Loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, a super-book, a medical device or equipment, a biometric sensor/device, a wearable device (smart watch, smart garment, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., music or video device, or satellite radio transceiver device), a vehicle component or sensor, a smart meter/sensor, an industrial manufacturing device, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

Some UEs may be considered Machine Type Communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, and/or location tags, etc. that may communicate with a base station, another device (e.g., a remote device), or some other entity. For example, the wireless node may provide a connection, e.g., to a network (e.g., a wide area network such as the internet or a cellular network) or to a network via a wired or wireless communication link. Some UEs may be considered internet of things (IoT) devices and/or may be implemented as NB-IoT (narrowband internet of things) devices. Some UEs may be considered Customer Premises Equipment (CPE). UE 120 may be included within a housing that houses components of UE 120, such as processor components and/or memory components. In some aspects, the processor component and the memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and/or electrically coupled.

In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a particular RAT and may operate on one or more frequencies. A RAT may also be referred to as a radio technology, an air interface, etc. The frequency may also be referred to as a carrier wave, frequency channel, etc. Each frequency may support a single RAT in a given geographical area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

In some aspects, two or more UEs 120 (e.g., as shown by UE 120a and UE 120 e) may communicate directly using one or more side link channels (e.g., without using base station 110 as an intermediary to communicate with each other). For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, a vehicle-to-everything (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol or a vehicle-to-infrastructure (V2I) protocol), and/or a mesh network. In this case, UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by base station 110.

Devices of the wireless network 100 may communicate using the electromagnetic spectrum, which may be subdivided into various levels, bands, channels, etc., based on frequency or wavelength. For example, devices of the wireless network 100 may communicate using an operating frequency band having a first frequency range (FR 1), the first frequency range (FR 1) may span from 410MHz to 7.125GHz, and/or may communicate using an operating frequency band having a second frequency range (FR 2), the second frequency range (FR 2) may span from 24.25GHz to 52.6GHz. The frequency between FR1 and FR2 is sometimes referred to as the intermediate frequency. Although a portion of FR1 is greater than 6GHz, FR1 is commonly referred to as the "sub-6 GHz" band. Similarly, FR2 is commonly referred to as the "millimeter wave" frequency band, although it is different from the Extremely High Frequency (EHF) frequency band (30 GHz-300 GHz) identified by the International Telecommunications Union (ITU) as the "millimeter wave" frequency band. Thus, unless specifically stated otherwise, it is to be understood that the term "sub-6 GHz" or the like, if used herein, may broadly refer to frequencies less than 6GHz, frequencies within FR1, and/or intermediate frequency (e.g., greater than 7.125 GHz). Similarly, unless specifically stated otherwise, it is to be understood that the term "millimeter wave" or the like, if used herein, may broadly represent frequencies within the EHF band, frequencies within FR2, and/or mid-band frequencies (e.g., less than 24.25 GHz). It is contemplated that the frequencies included in FR1 and FR2 may be modified, and that the techniques described herein are applicable to those modified frequency ranges.

As mentioned above, fig. 1 is provided as an example. Other examples may differ from the examples described with respect to fig. 1.

Fig. 2 is a schematic diagram illustrating an example 200 of a base station 110 in communication with a UE 120 in a wireless network 100 according to the present disclosure. Base station 110 may be equipped with T antennas 234a through 234T, and UE 120 may be equipped with R antennas 252a through 252R, where typically T.gtoreq.1 and R.gtoreq.1.

At base station 110, transmit processor 220 may receive data for one or more UEs from data source 212, select one or more Modulation and Coding Schemes (MCSs) for each UE based at least in part on a Channel Quality Indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. Transmit processor 220 may also process system information (e.g., for semi-Static Resource Partitioning Information (SRPI)) and control information (e.g., CQI requests, grants, and/or upper layer signaling) and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary Synchronization Signals (PSS) or Secondary Synchronization Signals (SSS)). A Transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide T output symbol streams to T Modulators (MODs) 232a through 232T. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. T downlink signals from modulators 232a through 232T may be transmitted via T antennas 234a through 234T, respectively.

At UE 120, antennas 252a through 252r may receive the downlink signals from base station 110 and/or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM) to obtain received symbols. MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254R, perform MIMO detection on the received symbols, and provide detected symbols, if applicable. Receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to controller/processor 280. The term "controller/processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a Reference Signal Received Power (RSRP) parameter, a Received Signal Strength Indicator (RSSI) parameter, a Reference Signal Received Quality (RSRQ) parameter, and/or a CQI parameter, etc. In some aspects, one or more components of UE 120 may be included in housing 284.

The network controller 130 may include a communication unit 294, a controller/processor 290, and a memory 292. The network controller 130 may comprise, for example, one or more devices in a core network. The network controller 130 may communicate with the base station 110 via a communication unit 294.

Antennas (e.g., antennas 234a through 234t and/or antennas 252a through 252 r) may include or be included in one or more antenna panels, antenna groups, antenna element groups and/or antenna arrays, etc. The antenna panel, antenna group, antenna element group, and/or antenna array may include one or more antenna elements. The antenna panel, antenna group, antenna element group, and/or antenna array may include a set of coplanar antenna elements and/or a set of non-coplanar antenna elements. The antenna panel, antenna group, antenna element group, and/or antenna array may include antenna elements within a single housing and/or antenna elements within multiple housings. The antenna panel, antenna group, antenna element group, and/or antenna array may include one or more antenna elements coupled to one or more transmit and/or receive components (e.g., one or more components of fig. 2).

On the uplink, at UE 120, transmit processor 264 may receive and process data from data source 262 and control information from controller/processor 280 (e.g., for reports including RSRP, RSSI, RSRQ and/or CQI). Transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In some aspects, a modulator and demodulator (e.g., MOD/DEMOD 254) of UE 120 may be included in the modem of UE 120. In some aspects, UE 120 includes a transceiver. The transceiver may include any combination of antennas 252, modulators and/or demodulators 254, MIMO detector 256, receive processor 258, transmit processor 264, and/or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller/processor 280) and memory 282 to perform aspects of any of the methods described herein (e.g., as described with reference to fig. 1-19).

At base station 110, uplink signals from UE 120 and other UEs may be received by antennas 234, processed by demodulators 232, detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by UE 120. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to a controller/processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. Base station 110 may include a scheduler 246 to schedule UEs 120 for downlink and/or uplink communications. In some aspects, a modulator and demodulator (e.g., MOD/DEMOD 232) of base station 110 may be included in the modem of base station 110. In some aspects, the base station 110 includes a transceiver. The transceiver may include any combination of antennas 234, modulators and/or demodulators 232, MIMO detector 236, receive processor 238, transmit processor 220, and/or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller/processor 240) and memory 242 to perform aspects of any of the methods described herein (e.g., as described with reference to fig. 1-19).

As described in more detail elsewhere herein, controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component of fig. 2 may perform one or more techniques associated with using the nipple value for Discontinuous Reception (DRX). For example, controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component of fig. 2 may perform or direct operations such as process 1200 of fig. 12, process 1300 of fig. 13, process 1400 of fig. 14, process 1500 of fig. 15, and/or other processes as described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and/or memory 282 may include non-transitory computer-readable media storing one or more instructions (e.g., code and/or program code) for wireless communication. For example, the one or more instructions, when executed by the one or more processors of base station 110 and/or UE 120 (e.g., directly or after compiling, converting, and/or interpreting), may cause the one or more processors, UE 120, and/or base station 110 to perform or direct operations such as process 1200 of fig. 12, process 1300 of fig. 13, process 1400 of fig. 14, process 1500 of fig. 15, and/or other processes as described herein. In some aspects, executing instructions may include executing instructions, converting instructions, compiling instructions, and/or interpreting instructions, among others.

In some aspects, UE 120 includes means for obtaining a DRX short cycle value corresponding to a number of hertz (Hz), means for sleeping as part of a DRX cycle, and/or means for starting waking up at a subframe based at least in part on the DRX short cycle value and a subframe identifier of the subframe. Means for UE 120 to perform the operations described herein may include, for example, one or more of antenna 252, demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, modulator 254, controller/processor 280, or memory 282.

In some aspects, the base station 110 includes means for preparing for communication with the UE according to the DRX short burst value corresponding to the number of Hz and/or means for starting to transmit data bursts to the UE at the subframe according to a DRX cycle based at least in part on the DRX short burst value and a subframe identifier of the subframe. Means for base station 110 to perform the operations described herein may include, for example, one or more of transmit processor 220, TX MIMO processor 230, modulator 232, antenna 234, demodulator 232, MIMO detector 236, receive processor 238, controller/processor 240, memory 242, or scheduler 246.

In some aspects, UE 120 includes means for obtaining a DRX nipple value corresponding to a number of Hz, means for sleeping as part of a DRX cycle, and/or means for starting waking at a slot based at least in part on the DRX nipple value and a slot identifier of the slot. Means for UE 120 to perform the operations described herein may include, for example, one or more of antenna 252, demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, modulator 254, controller/processor 280, or memory 282.

In some aspects, the base station 110 includes means for preparing for communication with the UE according to a DRX nipple value corresponding to Hz, and/or means for starting to transmit data bursts to the UE at the time slots according to a DRX cycle based at least in part on the DRX nipple value and a slot identifier of the time slot. Means for base station 110 to perform the operations described herein may include, for example, one or more of transmit processor 220, TX MIMO processor 230, modulator 232, antenna 234, demodulator 232, MIMO detector 236, receive processor 238, controller/processor 240, memory 242, or scheduler 246.

Although the blocks in fig. 2 are shown as distinct components, the functionality described above with respect to the blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functions described with respect to transmit processor 264, receive processor 258, and/or TX MIMO processor 266 may be performed by controller/processor 280 or under the control of controller/processor 280.

As described above, fig. 2 is provided as an example. Other examples may differ from the example described with respect to fig. 2.

Fig. 3 is a schematic diagram illustrating an example 300 of a device designed for low latency applications in accordance with the present disclosure.

Some devices, including devices for augmented reality (XR), may require low latency traffic to and from an edge server or cloud environment. Example 300 illustrates communication between an XR device and an edge server or cloud environment via a base station (e.g., a gNB). The XR device may be an Augmented Reality (AR) eyeglass device, a Virtual Reality (VR) eyeglass device, or other gaming device. XR devices may have limited battery capacity while expecting battery life (e.g., full day use) with smartphones. Battery power is a problem even when the XR device is tethered (tether) to the smartphone and uses the same smartphone battery. XR device power consumption may be limited and may result in an uncomfortable user experience and/or short battery life.

As described above, fig. 3 is provided as an example. Other examples may differ from the example described with respect to fig. 3.

Fig. 4 is a schematic diagram illustrating an example 400 of low latency traffic and power states according to the present disclosure.

Power consumption may be reduced by limiting the amount of time that the XR device's processing resources are active for computation and power consumption. Some wireless communication systems may support UEs (such as XR devices) operating in DRX mode. A UE in a DRX mode may transition between a sleep state for power saving and an active state for data transmission and reception. The active state for data transmission and reception may be referred to as DRX "On-duration". UEs using different DRX cycles may have non-uniform cycle durations within a DRX period. Such non-uniform cycle durations may provide DRX on durations that are aligned with the periodicity of downlink traffic to the UE. In some cases, the DRX period may correspond to an anchor period spanning the DRX cycle set, and the subset of the DRX cycle set may have a different cycle duration than other DRX cycles in the DRX cycle set. In some cases, the on-duration offset value may be indicated for one or more DRX cycles within a DRX period (e.g., via Downlink Control Information (DCI) or medium access control element (MAC-CE)).

By offloading some of the computation to the edge server, the XR device may save processing resources. Example 400 illustrates a scenario where an XR device may utilize an edge server on the other side of a base station to split the computation of an application. The edge server may render video frames, such as intra-coded (I) frames and predictive (P) frames, encode the video frames, align the video frames with user pose information, and perform other related calculations. However, this means that there may be more traffic between the XR device and the edge server, which will result in the XR device consuming more power and signaling resources. XR downlink traffic (e.g., video frames) may have a periodic pattern corresponding to the frame rate of the transmitted video data (e.g., h.264/h.265 encoded video). Such downlink traffic may be quasi-periodic with data bursts at one frame per second (1/fps) or with two possibly interleaved "eye buffers" at 1/(2 x fps) per frame. For example, XR downlink traffic may include 100+ Kilobytes (KB) of data for 45, 60, 75, or 90 frames per second (e.g., every 11ms, 13ms, 16ms, or 22 ms). The XR uplink traffic may include controller information for games, information for VR split rendering, and/or user gesture information. XR uplink traffic may comprise 100 bytes per 2ms (500 Hz). The XR device may reduce the periodicity to align XR uplink traffic with XR downlink traffic.

For low latency applications, the DRX cycle and the start offset of the DRX cycle will be aligned with the downlink traffic arrival time. For example, an XR device may serve a user and enter a brief sleep state during a DRX cycle, and do so between video frames. The XR device and edge server may attempt to align uplink and downlink DRX cycles as part of a Connected DRX (CDRX). However, there is a DRX multimedia timing mismatch that prevents this alignment and prevents successful use of CDRX. For example, the update rate may be, for example, 120Hz or 60Hz, resulting in downlink traffic bursts arriving with a periodicity of 8.333ms or 16.667ms, respectively. However, the conventional DRX configuration may have one millisecond as the finest granularity of the DRX cycle, and the start of the on duration may be aligned with the millisecond time boundary. These partial millisecond differences may be compounded with each instance of the period to misalign the DRX cycle and XR traffic periodicity. For example, XR traffic periods may drift to the middle of the DRX cycle. This results in an increase in delay.

As described above, fig. 4 is provided as an example. Other examples may differ from the example described with respect to fig. 4.

Fig. 5 illustrates an example 500 of misalignment of DRX cycles and XR traffic periodicity according to the present disclosure. Example 500 illustrates downlink traffic burst arrival 505, which may include a plurality of downlink traffic bursts 510 transmitted according to a periodic pattern. Example 500 also illustrates a first conventional DRX configuration 515 and a second conventional DRX configuration 520.

Downlink traffic burst 510 may include, for example, XR downlink traffic having a periodic pattern corresponding to a frame rate of transmitted data (e.g., h.264/h.265 encoded video). The update rate may be, for example, 120Hz or 60Hz, resulting in downlink traffic bursts arriving with a periodicity of 8.333ms or 16.667ms, respectively. However, the first and second conventional DRX configurations 515 and 520 may have one millisecond as the finest granularity of the DRX cycle, and the start of the on duration may be aligned with a millisecond time boundary.

In the example of fig. 5, an update rate of 120Hz is shown for burst arrival 505, resulting in 8.333ms periodicity of downlink traffic burst 510. In case the first regular DRX configuration 515 is selected and the initial DRX cycle has an on-duration aligned with the first downlink traffic burst 510-a, the second downlink traffic burst 510-b and the third downlink traffic burst 510-a will also each be within the following two on-durations. However, the fourth downlink burst 510-d will miss the fourth start duration because it will occur 0.333 seconds after the end of the fourth start duration. If the second regular DRX configuration 520 is to be selected instead, the result will be that the first downlink traffic burst 510-a will be aligned with the on-duration, but the subsequent downlink traffic bursts 510-b, 510-c and 510-d will each miss the on-duration.

Further, if the DRX configuration is to be modified to have the finest granularity corresponding to a slot or symbol, such misalignment may continue to occur because the burst arrival 505 has a period that is not a multiple of the slot or symbol duration. For example, since the traffic burst interval (120 Hz or 60 Hz) expressed in milliseconds has a factor of 3 in the denominator, it cannot be divided into components (i.e., 1000/120=x/3, where X is an integer, for example 25 for a 120Hz update rate or 50 for a 60Hz update rate). More generally, if the DRX cycle granularity can be defined in slots, the expression will be the number of slots in one second divided by the source update rate in Hz. Misalignment between the downlink traffic burst 510 and the on-duration may add additional delay to the communication, where the additional delay is cyclic. For example, in a first missed on-duration of an 8ms DRX configuration, the downlink traffic burst may be retransmitted at a next on-duration that occurs 7ms later than the missed on-duration. The subsequent downlink traffic burst will have a lower delay, which is reduced by 0.333ms per period, until the downlink traffic burst is again aligned with the on-duration of 21 periods, where such alignment lasts three periods. Thus, the alignment and misalignment of downlink traffic bursts will be cyclic in such an example, with a period of 24 cycles, and an average delay of about 3ms. In some cases, to reduce the delay, the DRX cycle duration may be reduced, which also has a corresponding increase in power consumption due to the additional on duration. Thus, the XR device may consume additional processing resources.

As described above, fig. 5 is provided as an example. Other examples may differ from the example described with respect to fig. 5.

Fig. 6 illustrates an example 600 of an anchor period with a skip DRX cycle according to the present disclosure.

In some scenarios, a UE (e.g., XR device) and a network may use an anchor period with a hopping DRX period to better align the DRX period to reduce latency and save energy consumption. For example, the UE and the network may implement an anchor period with a skip DRX period. Downlink traffic burst arrive 605 may include a plurality of downlink traffic bursts 610 transmitted according to a periodic pattern. Downlink traffic burst 610 may include XR downlink traffic with a periodic pattern of downlink traffic bursts 610, e.g., every 8.333 ms. The anchor period 620 may, for example, span three DRX periods 615, and the third DRX period may be a skip period 625 having a longer period duration than the initial two DRX periods. In some cases, the anchor period 620 (which may be an example of a DRX period) may span more or fewer DRX periods, and may include one or more jump periods 625. The anchor period 620 may be used as a basis for determining the timing of a Radio Resource Management (RRM) function. In some cases, the hopping period 625 can include one or more additional slots as compared to other DRX periods of the anchor period 620. The position of the jump period 625 may vary within the anchor period 620. Although example 600 shows burst arrival 605 associated with periodic traffic having a 120Hz update rate and anchor period 620 includes three DRX cycles having durations of 8ms, and 9ms, other configurations may be used for different periodicity or patterns of downlink traffic. For example, for periodic traffic with 60Hz update rate, an anchor period with three DRX periods of 16ms, 17ms may be configured, or three DRX periods may have durations of 16ms, 18ms, respectively. The order of the jump period 625 between DRX cycles within the anchor period 620 may also be configured. For example, for a 120Hz update rate, DRX periods of duration (8 ms, 9 ms), (8 ms, 9ms, 8 ms) or (9 ms, 8 ms) may be configured. Supporting these different options in the ordering may help to shift the respective on-durations of the plurality of users in time in order to better allocate utilization of resources over time.

In some cases, the base station may configure DRX configuration for the UE via Radio Resource Control (RRC) signaling. For example, the base station may identify that periodic traffic is being sent to the UE (e.g., based on XR application traffic with a particular update rate, or based on historical downlink burst transmissions to the UE), and that periodic traffic is not aligned with slot or subframe boundaries. The base station may determine an anchor period duration (e.g., based on multiple periods of the downlink traffic burst 610 corresponding to millisecond time boundaries, such as three 8.333ms periods providing a 25ms anchor period duration), multiple DRX periods within the anchor period 620, and which of the DRX periods will have different period durations. In some cases, RRC signaling may indicate an anchor period duration in milliseconds, a number of DRX periods in the anchor period, and a period duration (e.g., 8, 9) for each DRX period. In some cases, the UE may signal to the base station that the UE has the capability to perform a DRX procedure with a non-uniform DRX cycle, and the base station may enable the capability when providing the DRX configuration. In other cases, the non-uniform DRX cycle may be configured using other techniques, such as by adjusting a start offset of the on-duration of the DRX cycle, as discussed in connection with fig. 7.

As described above, fig. 6 is provided as an example. Other examples may differ from the example described with respect to fig. 6.

Fig. 7 illustrates an example 700 of a DRX configuration with dynamic offset adjustment supporting DRX techniques with non-uniform cycle duration in accordance with this disclosure. Example 700 illustrates a downlink traffic burst arrival 705 comprising a plurality of downlink traffic bursts 710 transmitted according to a periodic pattern. The example 700 also illustrates a DRX configuration 715 with a non-uniform cycle duration.

Downlink traffic burst 710 may include XR downlink traffic, for example, with periodic patterns of downlink traffic bursts 710 every 8.333 ms. In example 700, DRX configuration 715 has a configuration of 8ms DRX cycle duration and 1ms on duration. In the initial DRX cycle of the downlink traffic burst 710, the on duration may have a zero millisecond offset such that the first downlink traffic burst 710-a, the second downlink traffic burst 710-b, and the third downlink traffic burst 710-c are aligned with the on duration. The UE may adjust 720 the DRX on duration start offset after the third downlink traffic burst 710-c, which in this example may increase the on duration start offset by one millisecond such that the adjusted DRX on duration is aligned with the fourth downlink traffic burst 710-d. The UE may make another adjustment to the on-duration offset after the fourth downlink traffic burst 710-d, back to the original offset, and thus the DRX cycle may be configured to align the on-duration with the downlink traffic burst 710.

In some cases, the DRX on duration start offset adjustment may be predefined based on a specification, or defined in a DRX configuration (e.g., provided in RRC signaling). For example, different types of traffic (e.g., XR traffic) and different periodicity (e.g., based on 120Hz or 60Hz update rate) DRX start offsets (e.g., 1ms start offset added every 4 th DRX cycle) may be defined according to patterns such as in example 700. In some cases, the DRX start offset may be dynamically indicated in a previous downlink transmission (e.g., based on MAC-CE or DCI).

As described above, fig. 7 is provided as an example. Other examples may differ from the example described with respect to fig. 7.

Fig. 8 is a schematic diagram illustrating an example 800 of using a nipple value for DRX according to the present disclosure. Example 800 shows traffic burst arrival 810 arriving at a rate of 120 Hz.

The techniques described in connection with fig. 3-7 may improve alignment of DRX cycles and XR traffic to reduce mismatch between burst traffic and DRX on duration. However, according to various aspects described herein, the UE (e.g., XR device) and the network may further improve this alignment by using DRX short cadence corresponding to the number of Hz (e.g., instances per second) instead of integer ms values. The DRX nipple value may correspond to the number of Hz, for example, by being defined by a plurality of Hz or by being defined by a value based on or derived from a plurality of Hz or similar or related units. DRX short duration (DRX-ShortCadence) may be, for example, 45Hz, 60Hz, 90Hz, or 120Hz in order to align the UE's on duration with traffic bursts received by the UE according to the video frame rate. That is, the DRX short duration value may be a DRX timing value corresponding to the same time unit or frequency unit (e.g., video frame rate) through which the UE receives traffic bursts. Once the base station (e.g., the gNB) obtains the frame rate of traffic bursts to the UE or the periodicity of the traffic bursts to the UE, the base station may set a DRX short cadence value. The UE may receive the DRX short cycle value from the base station or obtain the DRX short cycle value based at least in part on the frame rate or periodicity of the traffic.

The UE may use the DRX short duration value to determine when to wake up for the on duration and decode a grant of a Physical Downlink Control Channel (PDCCH) from the base station as part of the DRX short duration 820. The UE may determine when to wake up on a subframe-by-subframe or slot-by-slot basis. For example, as shown by reference numeral 830, the UE may calculate whether a particular criterion meets the current subframe in a first portion of the current subframe (with subframe identifier n). The criteria may be associated with a DRX nipple value and a subframe identifier, and may be designed such that subframes (or slots) meeting the conditions are aligned with the frame rate or periodic timing of traffic bursts received by the UE. Each subframe may be 1ms and include a plurality of slots (e.g., 2, 6, 8). The criteria may be associated with a System Frame Number (SFN). For subframes with subframe identifier n= [ (SFN x 10) +subframe number ], the UE may wake up with a first upper limit (ceiling) value of (n x drx-ShortCadence/1000) +1 equal to a second upper limit value of ((n+1) × (drx-ShortCadence/1000)). If the value is not an integer, the upper bound operation indicates a minimum integer greater than the value, and if the value is an integer, the upper bound operation indicates the value itself. The SFN may be a number between 0 and 1023 of the frame and the subframe number may be a number between 0 and 9 within the frame. For example, if the DRX cadence value is 120Hz and the subframe has a subframe number of 5 in a frame with an SFN of 800, the subframe identifier n of the subframe may be (800 x 10) +5, or 8005. The first upper limit may be a minimum integer greater than (8005 x 120/1000) +1 or 962. The second upper limit value may be a minimum integer greater than ((8005+1) × (120/1000)) or 961. The first upper limit value and the second upper limit value are not equal, and thus the UE does not meet the criterion and wakes up for the subframe. However, a later subframe with subframe number 8 may exhibit a first upper limit value 962 (a minimum integer greater than (8008×120/1000) +1) and a second upper limit value 962 (a minimum integer greater than (8008+1) ×120/1000), and thus the UE may meet the criteria and wake up during that subframe. The calculation may be performed at the beginning of each subframe. In some aspects, multiple computations for multiple subframes may be performed at once.

In other words, the UE may satisfy some type of criteria associated with DRX nipple (e.g., corresponding to Hz) and a subframe identifier of a subframe that uniquely identifies the subframe in consecutive subframes within a period or time period. The criterion, or any criterion calculated for a given subframe, may be designed to wake up the subframe according to the frame rate or periodicity of the traffic bursts received by the UE using the DRX short cadence.

As shown by reference numeral 835, the UE may wake up for an on duration at the current subframe. When the UE wakes up, the UE may start a DRX on duration timer (DRX-onduration timer). The DRX on duration timer may be the minimum duration for which the UE is to wake up, and may be, for example, 1ms or 2ms. For example, if the UE wakes up at subframe 8 and the DRX on duration timer is 2ms, the UE may stay awake through subframes 8 and 9. If there is no more traffic, the UE may return to sleep. In example 800, the DRX on duration timer is 1ms. A DRX on duration timer may be started for the DRX group.

In some aspects, there may be 1 subframe hop per a specified number of periods, similar to the hop period technique described in connection with fig. 6. For example, for a period of 8ms, there may be 1 subframe (1 ms) of hops every 3 periods to accommodate a 1/3 subframe portion when the duty cycle is 8.333ms for 120 Hz. That is, for a DRX short of 120Hz, the UE may determine to wake up within subframes n=8, 16, 25, 33, 41, 50, etc. As shown by reference numeral 840, after waking up at subframes 8 and 16 instead of subframe 24, the UE may skip 1 subframe to wake up at subframe 25. If example 800 continues to show an on-duration subframe, the UE may then wake up at subframe 33 after 8ms and at subframe 41 after another 8 ms. The UE may skip 1 subframe and wake up at subframe 50 instead of at subframe 49 after 8 ms. In some aspects, the UE may skip computation for one or more subframes after the on-duration until the next possible on-duration is close.

In some aspects, the UE may use the DRX start offset and/or the DRX slot offset to provide more granularity as to when to wake up within a subframe in order to more closely align with the traffic periodicity of the UE. The UE may wake up and start a DRX on duration timer after a DRX start offset (DRX-StartOffset) (n+drx-StartOffset) or a duration associated with the DRX start offset from the start of the subframe, and/or a DRX slot offset (DRX-SlotOffset). The DRX start offset may be a number of ms or microseconds (μs) (or set to zero ms or μs for no DRX start offset), symbols, or mini-slots. The DRX start offset may be used to temporally interlace multiple UEs. In some aspects, the UE may wake up and start a DRX on duration timer for a duration after the start of a subframe, where the duration is associated with DRX-StartOffset. That is, the UE may wait for a duration starting at the beginning of a subframe before waking up. For example, the UE may wake up at or after time n+ (drx-StartOffset mod (floor (rounded down))), where n represents the start of the subframe and (drx-StartOffset mod (floor (1000/drx-ShortCadence)) represents the duration. mod represents a modulo operation. If the value is not an integer, the lower bound operation indicates a maximum integer less than the value (1000/DRX short cadence value), and if the value is an integer, the lower bound operation indicates the value itself. The duration may be calculated using a similar value or operation for the duration to reach the same value as the value of DRX start offset mod (floor (1000/DRX short cadence value)).

The DRX slot offset may be a plurality of slots. For example, if there are 8 slots in a subframe (such as for mmWave), each slot is 125 μs or.125 ms. If the DRX slot offset is 2 slots, the wake-up time is shifted (2.125) or.250 ms. If the wake-up time according to 120Hz is 8ms, 16ms, 25ms, 33ms, 41ms, 50ms, etc., the UE may use the DRX slot offset to better match the traffic bursts at 8.33ms, 16.66ms, and 25ms by using a DRX slot offset of 2 slots at subframe 8, a DRX slot offset of 16.625ms using 5 slots at subframe 16, no DRX slot offset of 25.000ms at subframe 25, etc., such as shown by the table for 120Hz in fig. 8. As a result, the UE may better align the DRX cycle and the traffic period to further reduce delay and save signaling resources.

As described above, fig. 8 is provided as an example. Other examples may differ from the example described with respect to fig. 8.

Fig. 9 is a diagram illustrating an example 900 of using short cadence values for DRX for slot positions according to the present disclosure. Example 900 shows traffic burst 905 in a plurality of burst arrivals 910 arriving at a rate of 120 Hz. Burst arrival 910 in example 900 may be the same as burst arrival 810 shown in example 800 of fig. 8, except that the timeline in example 900 is enlarged to show multiple slots of a subframe.

In some aspects, the per-subframe calculation based on the subframe identifier may be extended to a slot position with slot identifier k. That is, the criteria for waking up may be based at least in part on the slot identifier k being equal to (((SFN x 10) +subframe number) xslots per second) +slot number. In case the first upper limit value of (k x DRX-ShortCadence/1000 x slots per second) +1 is equal to the second upper limit value of ((k+1) × (DRX-ShortCadence/1000 x slots per second)), the UE may wake up and start the DRX on duration timer at slot k. The computation may be per slot rather than per subframe. As shown by reference numeral 920, the UE can determine whether the calculation for the current slot meets a criterion for waking up based at least in part on the DRX short cycle and the slot identifier. As shown by reference numeral 925, if the UE is to wake up, the UE may wake up an on duration 930, which on duration 930 may be a subframe or 8 slots. In some aspects, the computation may be performed all at once at the beginning of a subframe. In other words, the UE may meet some criteria associated with a DRX short burst value (corresponding to Hz) and a slot identifier of a slot that uniquely identifies a slot of consecutive slots within a period or time segment. The standard, or any standard calculated for a given slot, may be designed to use the DRX nipple value to wake up the slot according to the frame rate or periodicity of the traffic burst to the UE. In some aspects, the UE may skip computation for one or more slots or subframes after the on duration.

In some aspects, a UE may wake up and start a DRX on duration timer after a DRX start slot offset (DRX-StartSlotOffset) from the beginning of a subframe (n+drx-StartOffset) or (n+ (DRX-StartOffset) DRX start slot offset (floor (1000/DRX-ShortCascadence)), the DRX start slot offset may be multiple ms, microseconds (μs) (or set to zero ms or μs for no DRX start slot offset), symbols, slots, or mini-slots.

As described above, fig. 9 is provided as an example. Other examples may differ from the example described with respect to fig. 9.

Fig. 10 is a schematic diagram illustrating an example 1000 of using a nipple value for DRX according to the present disclosure. As shown in fig. 10, a base station 1010 (e.g., base station 110) may communicate with a UE 1020 (e.g., UE 120). Base station 1010 and UE 1020 may be part of a wireless network (e.g., wireless network 100).

UE 1020 may obtain a DRX nipple value, which may be defined as a plurality of Hz. As shown by reference numeral 1025, the base station 1010 may transmit a DRX nipple value to the UE 120. The UE 1020 may also obtain a DRX nipple value from the stored configuration information. For example, the UE 1020 may select a DRX nipple value from a plurality of DRX nipple values based at least in part on the periodicity (e.g., video frame rate) of the determined traffic burst transmitted by the base station 1010, as shown by reference numeral 1030.

As shown by reference numeral 1035, the UE 1020 may sleep and wake up according to the DRX nipple value. For example, the UE 1020 may calculate, for each subframe, whether the subframe identifier causes the UE 1020 to meet the criteria for waking up based at least in part on the DRX nipple value. The DRX short burst value (DRX-ShortCadence) may be, for example, 120Hz, and the subframe identifier n= [ (SFN 10) +subframe number ]. If subframe identifier n=7, ceil (rounded up) (n×drx-short cadence/1000) +1=2 and ceil ((n+1) ×drx-ShortCadence/1000) =1. Since 2 is not equal to 1, the criterion (the condition is false) is not satisfied. If subframe identifier n=8, then ceil (n×drx-ShortCadence/1000) +1=2 and ceil ((n+1) ×drx-ShortCadence/1000) =2. Since 2 is equal to 2, the criterion (condition true) is satisfied. If subframe identifier n=9, then ceil (n×drx-ShortCadence/1000) +1=3 and ceil ((n+1) ×drx-ShortCadence/1000) =2. Since 3 is not equal to 2, the criterion (the condition is false) is not satisfied. In some aspects, UE 1020 may use a hop period, slot offset, timing offset, or any other technique described herein to better match the periodicity of the traffic bursts. The UE 1020 may start the on duration timer as part of waking up.

In some aspects, the UE 1020 may perform a calculation for each slot based at least in part on the DRX short cadence value to determine whether the slot identifier causes the UE 1020 to meet the criteria for waking up. The DRX short burst value (DRX-ShortCadence) may be, for example, 120Hz, and the slot identifier k= [ ((SFN x 10+ subframe number) xslots per second) +slot number ]. The 120Hz slot per second (slotpessec) may be 8. If the slot identifier k=8×8+1, then ceil (k×drx-ShortCadence/(1000×slotppersec)) +1=2 and ceil ((k+1) ×drx-ShortCadence/(1000×slotppersec))=1. Since 2 is not equal to 1, the criterion (the condition is false) is not satisfied. If the slot identifier k=8×8+2, then ceil (k×drx-ShortCadence/(1000×slotppersec)) +1=2 and ceil ((k+1) ×drx-ShortCadence/(1000×slotppersec))=2. Since 2 is equal to 2, the criterion (condition true) is satisfied. If the slot identifier k=8×8+3, then ceil (k×drx-ShortCadence/(1000×slotppersec)) +1=3 and ceil ((k+1) ×drx-ShortCadence/(1000×slotppersec))=2. Since 3 is not equal to 2, the criterion (the condition is false) is not satisfied. In some aspects, the slot identifier k= [ ((SFN x 10+ subframe number) x per subframe slot) +slot number ]. The slot per subframe (slotsPerSubframe) of 120Hz may be 8. If the slot identifier k=8×8+1, then the criterion can be satisfied if ceil (k×drx-ShortCadence/(1000×slotspersubframe)) +1=ceil ((k+1) -drx-ShortCadence/(1000×slotspersubframe)). In some aspects, UE 1020 may use a hop period, slot offset, timing offset, or any other technique described herein to better match the periodicity of the traffic bursts.

As described above, fig. 10 is provided as an example. Other examples may differ from the example described with respect to fig. 10.

Fig. 11 is a schematic diagram illustrating an example 1100 of using different nipple values according to the present disclosure. Fig. 11 shows a table of different DRX nipple values, including tables of 48Hz, 60Hz, 80Hz and 90Hz, to match the corresponding frame rates of 48Hz, 60Hz, 80Hz and 90 Hz. Similar to the 120Hz table in fig. 8, the first column in each table of fig. 11 indicates the periodicity of the traffic bursts (ms-between traffic bursts corresponds to frame rate/short cadence value). The second column in each table indicates the wake-up time (in ms) when the criterion is met for a short tempo value in order to match the periodicity in the first column. The third column indicates (in ms) the wake-up time when the slot offset (e.g., 0.125ms increment) is used to more closely match the periodicity indicated in the first column.

In other words, the UE may calculate whether a subframe (or slot) meets criteria for waking up based at least in part on a subframe identifier of the subframe (or slot identifier of the slot) and a DRX short cadence value of 48Hz, 60Hz, 80Hz, 90Hz, or 120 Hz. The criteria may be designed such that the UE starts waking up at the subframe and/or slot that is the closest match or alignment of the traffic burst according to the periodicity of the traffic burst. The UE may use the slot offset to closely match the periodicity. In this way, the UE more closely matches the wake-up time with the traffic bursts in order to save power and processing resources, while not missing any traffic bursts during the on-duration. The UE may adjust the on duration in coordination with the nipple value and/or the slot offset value as necessary. Note that other DRX nipple values may be used to match the 45Hz, 75Hz frame rate or other frame rates for applications or services not explicitly listed herein.

As described above, fig. 11 is provided as an example. Other examples may differ from the example described with respect to fig. 11.

Fig. 12 is a diagram illustrating an exemplary process 1200 performed, for example, by a UE, in accordance with the present disclosure. Example process 1200 is an example of a UE (e.g., UE 120, UE 1020) performing operations associated with using a short cadence value for DRX.

As shown in fig. 12, in some aspects, process 1200 may include obtaining DRX nipple values corresponding to a number of Hz (block 1210). For example, the UE (e.g., using timing component 1608 depicted in fig. 16) may obtain DRX nipple values corresponding to the number of Hz, as described above.

As further shown in fig. 12, in some aspects, process 1200 may include sleeping as part of a DRX cycle (block 1220). For example, the UE (e.g., using timing component 1608 depicted in fig. 16) may sleep as part of a DRX cycle, as described above.

As further shown in fig. 12, in some aspects, process 1200 may include starting waking up at a subframe based at least in part on the DRX short cadence value and a subframe identifier n of the subframe (block 1230). For example, the UE (e.g., using timing component 1608 depicted in fig. 16) can begin waking up at a subframe based at least in part on the DRX short cadence value and subframe identifier n of the subframe, as described above.

Process 1200 may include additional aspects, for example, any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.

In the first aspect, the subframe identifier n is equal to (10. SFN of the frame comprising the subframe) +the subframe number of the subframe within the frame.

In a second aspect, alone or in combination with the first aspect, waking up comprises waking up in case the first upper limit value of (n+1) × (DRX short cadence value/1000) +1 is equal to the second upper limit value of (n+1) × (DRX short cadence value/1000). In some aspects, waking up comprises waking up for a duration after a start of a subframe, wherein the duration comprises a DRX start offset mod (floor (1000/DRX short cadence value)) alone or in combination with other aspects.

In a third aspect, alone or in combination with one or more of the first and second aspects, waking up comprises starting an on duration timer.

In a fourth aspect, alone or in combination with one or more of the first to third aspects, waking up comprises waking up after a DRX slot offset from a beginning of a subframe.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, waking up comprises waking up after a DRX start offset from a start of a subframe.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, waking up comprises waking up after a DRX slot offset from a start of a subframe plus a DRX start offset.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the process 1200 includes skipping subframes before starting waking up at the subframes based at least in part on a duty cycle corresponding to the DRX short cadence value.

In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the obtaining comprises receiving a DRX short cadence value from a base station.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the DRX nipple value is 45Hz, 48Hz, 60Hz, 75Hz, 80Hz, 90Hz, or 120Hz.

Although fig. 12 shows example blocks of process 1200, in some aspects process 1200 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in fig. 12. Additionally or alternatively, two or more of the blocks of process 1200 may be performed in parallel.

Fig. 13 is a schematic diagram illustrating an example process 1300 performed, for example, by a base station, in accordance with the present disclosure. Example process 1300 is an example of a base station (e.g., base station 110, base station 1010) performing operations associated with discontinuous reception nipple.

As shown in fig. 13, in some aspects, process 1300 may include preparing communication with a UE according to DRX nipple values corresponding to a number of Hz (block 1310). For example, the base station (e.g., using timing component 1708 depicted in fig. 17) can prepare to communicate with the UE according to the DRX nipple value corresponding to the number of Hz, as described above.

As further shown in fig. 13, in some aspects, process 1300 may include starting to transmit a data burst to a UE at a subframe according to a DRX cycle based at least in part on a DRX short cadence value and a subframe identifier n of the subframe (block 1320). For example, the base station (e.g., using the transmit component 1704 depicted in fig. 17) can begin transmitting data bursts to the UE at a subframe according to a DRX cycle based at least in part on the DRX short cadence value and a subframe identifier n of the subframe, as described above.

Process 1300 may include additional aspects, for example, any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.

In the first aspect, the subframe identifier n is equal to (10. SFN of the frame comprising the subframe) +the subframe number of the subframe within the frame.

In a second aspect, alone or in combination with the first aspect, the transmitting starts at the subframe with a first upper limit value of (n+1) DRX short cadence value/1000) +1 equal to a second upper limit value of (n+1) (DRX short cadence value/1000). In some aspects, transmission is performed beginning at a duration after the start of a subframe, alone or in combination with other aspects, where the duration includes a DRX start offset mod (floor (1000/DRX short cadence value)).

In a third aspect, alone or in combination with one or more of the first and second aspects, transmitting includes transmitting the data burst based at least in part on a DRX slot offset from a beginning of the subframe.

In a fourth aspect, alone or in combination with one or more aspects of the first through third aspects, transmitting includes transmitting the data burst based at least in part on a DRX start offset from a start of the subframe.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, transmitting includes transmitting the data burst based at least in part on a DRX slot offset from a start of the subframe plus a DRX start offset.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the process 1300 includes skipping a subframe before transmitting a data burst in the subframe based at least in part on a duty cycle corresponding to the DRX short cadence value.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, process 1300 includes transmitting a DRX nipple value to the UE.

Although fig. 13 shows example blocks of process 1300, in some aspects process 1300 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in fig. 13. Additionally or alternatively, two or more of the blocks of process 1300 may be performed in parallel.

Fig. 14 is a schematic diagram illustrating an example process 1400 performed, for example, by a UE, in accordance with the present disclosure. Example process 1400 is an example of a UE (e.g., UE 120, UE 1020) performing operations associated with discontinuous reception nipple.

As shown in fig. 14, in some aspects, process 1400 may include obtaining DRX nipple values corresponding to a number of Hz (block 1410). For example, the UE (e.g., using timing component 1808 depicted in fig. 18) may obtain DRX nipple values corresponding to the number of Hz, as described above.

As further shown in fig. 14, in some aspects, process 1400 may include sleeping as part of a DRX cycle (block 1420). For example, the UE (e.g., using timing component 1808 depicted in fig. 18) may sleep as part of a DRX cycle, as described above.

As further shown in fig. 14, in some aspects, process 1400 may include starting waking at a slot based at least in part on the DRX nipple value and a slot identifier k of the slot (block 1430). For example, the UE (e.g., using timing component 1808 depicted in fig. 18) can begin waking up at a slot based at least in part on the DRX nipple value and the slot identifier k of the slot, as described above.

Process 1400 may include additional aspects, for example, any single aspect or any combination of aspects described below and/or in conjunction with one or more other processes described elsewhere herein.

In the first aspect, the slot identifier k is equal to ((10×sfn of a frame including subframes including slots+subframe number of a subframe within a frame) ×slots per second) +slot number of a slot within a subframe.

In a second aspect, alone or in combination with the first aspect, waking up comprises waking up in case the first upper limit value of (k x DRX short cadence value/(1000 x slots per second)) +1 is equal to the second upper limit value of (k+1) × (DRX short cadence value/(1000 x slots per second).

In a third aspect, alone or in combination with one or more of the first and second aspects, waking up comprises starting an on duration timer.

In a fourth aspect, alone or in combination with one or more of the first to third aspects, waking up comprises waking up after a DRX start slot offset from a start of the slot.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the process 1400 includes skipping subframes before waking up at a slot based at least in part on a duty cycle corresponding to a DRX short cadence value.

In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, obtaining comprises receiving a DRX short cadence value from a base station.

Although fig. 14 shows example blocks of process 1400, in some aspects process 1400 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in fig. 14. Additionally or alternatively, two or more of the blocks of process 1400 may be performed in parallel.

Fig. 15 is a schematic diagram illustrating an example process 1500 performed, for example, by a base station, in accordance with the present disclosure. Example process 1500 is an example of a base station (e.g., base station 110) performing operations associated with discontinuous reception nipple.

As shown in fig. 15, in some aspects, process 1500 may include preparing communication with a UE according to a DRX nipple value corresponding to Hz (block 1510). For example, the base station (e.g., using timing component 1908 depicted in fig. 19) can prepare to communicate with the UE according to the DRX nipple value corresponding to Hz, as described above.

As further shown in fig. 15, in some aspects, process 1500 may include starting to transmit a data burst to a UE at a slot according to a DRX cycle based at least in part on a DRX nipple value and a slot identifier k of the slot (block 1520). For example, a base station (e.g., using transmit component 1904 depicted in fig. 19) can begin transmitting data bursts to a UE at a slot according to a DRX cycle based at least in part on a DRX nipple value and a slot identifier k of the slot, as described above.

Process 1500 may include additional aspects, for example, any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.

In the first aspect, the slot identifier k is equal to ((10×sfn of a frame including subframes including slots+subframe number of a subframe within a frame) ×slots per second) +slot number of a slot within a subframe.

In a second aspect, alone or in combination with the first aspect, transmission is started at a slot with a first upper limit value of (k×drx short cadence value/(1000×slot per second)) +1 being equal to a second upper limit value of (k+1) ×drx short cadence value/(1000×slot per second).

In a third aspect, alone or in combination with one or more of the first and second aspects, transmitting includes transmitting the data burst based at least in part on a DRX start slot offset from a start of the slot.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, process 1500 includes transmitting a DRX nipple value to a UE.

Although fig. 15 shows example blocks of process 1500, in some aspects process 1500 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in fig. 15. Additionally or alternatively, two or more of the blocks of process 1500 may be performed in parallel.

Fig. 16 is a block diagram of an example apparatus 1600 for wireless communications. The apparatus 1600 may be a UE, or the UE may include the apparatus 1600. In some aspects, the apparatus 1600 includes a receiving component 1602 and a transmitting component 1604 that can communicate with each other (e.g., via one or more buses and/or one or more other components). As shown, apparatus 1600 may communicate with another apparatus 1606 (e.g., a UE, a base station, or another wireless communication device) using a receiving component 1602 and a transmitting component 1604. As further illustrated, apparatus 1600 can include a timing component 1608 or the like.

In some aspects, apparatus 1600 may be configured to perform one or more operations described herein in connection with fig. 1-11. Additionally or alternatively, apparatus 1600 may be configured to perform one or more processes described herein, such as process 1200 of fig. 12. In some aspects, the apparatus 1600 and/or one or more components shown in fig. 16 may include one or more components of the UE described above in connection with fig. 2. Additionally or alternatively, one or more of the components shown in fig. 16 may be implemented within one or more of the components described above in connection with fig. 2. Additionally or alternatively, one or more components of the set of components may be implemented at least in part as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the functions or operations of the component.

The receiving component 1602 can receive communications, such as reference signals, control information, data communications, or a combination thereof, from the device 1606. The receiving component 1602 may provide the received communication to one or more other components of the apparatus 1600. In some aspects, the receiving component 1602 can perform signal processing (such as filtering, amplifying, demodulating, analog-to-digital converting, demultiplexing, deinterleaving, demapping, equalizing, interference cancellation, or decoding, etc.) on the received communication and can provide the processed signal to one or more other components of the device 1606. In some aspects, the receiving component 1602 may include one or more antennas, demodulators, MIMO detectors, receive processors, controllers/processors, memories, or a combination thereof for the UE described above in connection with fig. 2.

The sending component 1604 may send communications to the device 1606, such as reference signals, control information, data communications, or a combination thereof. In some aspects, one or more other components of the device 1606 may generate communications and may provide the generated communications to the sending component 1604 for sending to the device 1606. In some aspects, the sending component 1604 may perform signal processing (such as filtering, amplifying, modulating, digital-to-analog converting, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may send the processed signals to the device 1606. In some aspects, the transmit component 1604 may include one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers/processors, memory, or a combination thereof of the UE described above in connection with fig. 2. In some aspects, the sending component 1604 may be co-located with the receiving component 1602 in a transceiver.

The timing component 1608 may obtain DRX nipple values corresponding to the number of Hz. The timing component 1608 can cause the apparatus 1600 to sleep as part of a DRX cycle. The timing component 1608 can begin waking up the apparatus 1600 at a subframe based at least in part on the DRX short cadence value and a subframe identifier of the subframe.

The timing component 1608 can skip a subframe before starting to wake up at the subframe based at least in part on the duty cycle corresponding to the DRX short cadence value.

The number and arrangement of components shown in fig. 16 are provided as examples. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in fig. 16. Further, two or more components shown in fig. 16 may be implemented within a single component, or a single component shown in fig. 16 may be implemented as multiple distributed components. Additionally or alternatively, the set of component(s) shown in fig. 16 may perform one or more functions described as being performed by another set of components shown in fig. 16.

Fig. 17 is a block diagram of an example apparatus 1700 for wireless communications. The apparatus 1700 may be a base station or the base station may include the apparatus 1700. In some aspects, the apparatus 1700 includes a receiving component 1702 and a transmitting component 1704 that can communicate with each other (e.g., via one or more buses and/or one or more other components). As shown, the apparatus 1700 may communicate with another apparatus 1706 (such as a UE, a base station, or another wireless communication device) using a receiving component 1702 and a transmitting component 1704. As further shown, the apparatus 1700 may include a timing component 1708 or the like.

In some aspects, the apparatus 1700 may be configured to perform one or more of the operations described herein in connection with fig. 1-11. Additionally or alternatively, the apparatus 1700 may be configured to perform one or more of the processes described herein (such as process 1300 of fig. 13). In some aspects, the apparatus 1700 and/or one or more components shown in fig. 17 may comprise one or more components of a base station described above in connection with fig. 2. Additionally or alternatively, one or more of the components shown in fig. 17 may be implemented within one or more of the components described above in connection with fig. 2. Additionally or alternatively, one or more components of the set of components may be implemented at least in part as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the functions or operations of the component.

The receiving component 1702 can receive a communication, such as a reference signal, control information, data communication, or a combination thereof, from the device 1706. The receiving component 1702 can provide received communications to one or more other components of the apparatus 1700. In some aspects, the receiving component 1702 can perform signal processing (such as filtering, amplifying, demodulating, analog-to-digital converting, demultiplexing, deinterleaving, demapping, equalizing, interference cancellation or decoding, etc.) on the received communication and can provide the processed signal to one or more other components of the apparatus 1706. In some aspects, the receiving component 1702 can include one or more antennas, demodulators, MIMO detectors, receive processors, controllers/processors, memory, or a combination thereof for a base station as described above in connection with fig. 2.

The transmitting component 1704 can transmit a communication, such as a reference signal, control information, data communication, or a combination thereof, to the device 1706. In some aspects, one or more other components of the apparatus 1706 may generate communications and may provide the generated communications to the sending component 1704 for sending to the apparatus 1706. In some aspects, the transmit component 1704 may perform signal processing (such as filtering, amplifying, modulating, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communication and may transmit the processed signal to the apparatus 1706. In some aspects, the transmit component 1704 may include one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers/processors, memories, or combinations thereof of the base station described above in connection with fig. 2. In some aspects, the sending component 1704 may be co-located with the receiving component 1702 in a transceiver.

The timing component 1708 can prepare communication with the UE in accordance with the DRX nipple value corresponding to the number of Hz. The transmitting component 1704 can begin transmitting data bursts to the UE at the subframe according to a DRX cycle based at least in part on the DRX short cadence value and a subframe identifier of the subframe. The timing component 1708 can skip a subframe before transmitting a data burst in the subframe based at least in part on a duty cycle corresponding to the DRX short cadence value.

The timing component 1708 can determine a DRX nipple value based at least in part on capabilities of the UE, information from the UE, application requirements, and/or traffic conditions. The transmitting component 1704 can transmit the DRX short duration value to the UE.

The number and arrangement of components shown in fig. 17 are provided as examples. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in fig. 17. Further, two or more components shown in fig. 17 may be implemented within a single component, or a single component shown in fig. 17 may be implemented as multiple distributed components. Additionally or alternatively, the set of component(s) shown in fig. 17 may perform one or more functions described as being performed by another set of components shown in fig. 17.

Fig. 18 is a block diagram of an example apparatus 1800 for wireless communications. The apparatus 1800 may be a UE, or the UE may include the apparatus 1800. In some aspects, the apparatus 1800 includes a receiving component 1802 and a transmitting component 1804 that can communicate with each other (e.g., via one or more buses and/or one or more other components). As shown, the apparatus 1800 may communicate with another apparatus 1806 (such as a UE, a base station, or another wireless communication device) using a receive component 1802 and a transmit component 1804. As further illustrated, the apparatus 1800 can include a timing component 1808 or the like.

In some aspects, the apparatus 1800 may be configured to perform one or more operations described herein in connection with fig. 1-11. Additionally or alternatively, the apparatus 1800 may be configured to perform one or more processes described herein, such as process 1400 of fig. 14. In some aspects, the apparatus 1800 and/or one or more components shown in fig. 18 may include one or more components of the UE described above in connection with fig. 2. Additionally or alternatively, one or more of the components shown in fig. 18 may be implemented within one or more of the components described above in connection with fig. 2. Additionally or alternatively, one or more components of the set of components may be implemented at least in part as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the functions or operations of the component.

The receiving component 1802 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the device 1806. The receiving component 1802 may provide received communications to one or more other components of the apparatus 1800. In some aspects, the receiving component 1802 may perform signal processing (such as filtering, amplifying, demodulating, analog-to-digital converting, demultiplexing, deinterleaving, demapping, equalizing, interference cancellation or decoding, etc.) on the received communication and may provide the processed signal to one or more other components of the apparatus 1806. In some aspects, the receive component 1802 may include one or more antennas, demodulators, MIMO detectors, receive processors, controllers/processors, memories, or combinations thereof for a UE as described above in connection with fig. 2.

The transmit component 1804 can transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 1806. In some aspects, one or more other components of the apparatus 1806 may generate communications and may provide the generated communications to the sending component 1804 for sending to the apparatus 1806. In some aspects, the transmit component 1804 can perform signal processing (such as filtering, amplifying, modulating, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and can transmit the processed signals to the device 1806. In some aspects, the transmit component 1804 may include one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers/processors, memories, or combinations thereof of the UE described above in connection with fig. 2. In some aspects, the transmit component 1804 may be co-located with the receive component 1802 in a transceiver.

The timing component 1808 may obtain DRX nipple values corresponding to the number of Hz. The timing component 1808 can cause the apparatus 1800 to sleep as part of a DRX cycle. The timing component 1808 can begin waking up the apparatus 1800 at a slot based at least in part on the DRX nipple value and a slot identifier of the slot. The timing component 1808 can skip a subframe before starting waking up at a slot based at least in part on a duty cycle corresponding to a DRX short cadence value.

The number and arrangement of components shown in fig. 18 are provided as examples. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in fig. 18. Further, two or more components shown in fig. 18 may be implemented within a single component, or a single component shown in fig. 18 may be implemented as multiple distributed components. Additionally or alternatively, the set of component(s) shown in fig. 18 may perform one or more functions described as being performed by another set of components shown in fig. 18.

Fig. 19 is a block diagram of an example apparatus 1900 for wireless communication. The apparatus 1900 may be a base station or the base station may include the apparatus 1900. In some aspects, the apparatus 1900 includes a receiving component 1902 and a transmitting component 1904 that can communicate with each other (e.g., via one or more buses and/or one or more other components). As shown, the apparatus 1900 may communicate with another apparatus 1906 (such as a UE, a base station, or another wireless communication device) using a receiving component 1902 and a transmitting component 1904. As further illustrated, the apparatus 1900 can include a timing component 1908 or the like.

In some aspects, the apparatus 1900 may be configured to perform one or more operations described herein in connection with fig. 1-11. Additionally or alternatively, the apparatus 1900 may be configured to perform one or more processes described herein (such as process 1500 of fig. 15). In some aspects, the apparatus 1900 and/or one or more components shown in fig. 19 may include one or more components of the base station described above in connection with fig. 2. Additionally or alternatively, one or more of the components shown in fig. 19 may be implemented within one or more of the components described above in connection with fig. 2. Additionally or alternatively, one or more components of the set of components may be implemented at least in part as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the functions or operations of the component.

The receiving component 1902 can receive a communication, such as a reference signal, control information, data communication, or a combination thereof, from the device 1906. The receiving component 1902 can provide received communications to one or more other components of the apparatus 1900. In some aspects, the receiving component 1902 may perform signal processing (such as filtering, amplifying, demodulating, analog-to-digital converting, demultiplexing, deinterleaving, demapping, equalizing, interference cancellation or decoding, etc.) on the received communication and may provide the processed signal to one or more other components of the apparatus 1906. In some aspects, the receiving component 1902 can include one or more antennas, demodulators, MIMO detectors, receive processors, controllers/processors, memory, or a combination thereof for a base station described above in connection with fig. 2.

The transmitting component 1904 can transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the device 1906. In some aspects, one or more other components of the apparatus 1906 may generate communications and may provide the generated communications to the sending component 1904 for sending to the apparatus 1906. In some aspects, the transmit component 1904 can perform signal processing (such as filtering, amplifying, modulating, digital-to-analog converting, multiplexing, interleaving, mapping, encoding, or the like) on the generated communication and can transmit the processed signal to the device 1906. In some aspects, the transmit component 1904 can include one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers/processors, memories, or combinations thereof of the base station described above in connection with fig. 2. In some aspects, the sending component 1904 may be co-located with the receiving component 1902 in a transceiver.

Timing component 1908 can prepare for communication with a UE based on a DRX nipple value corresponding to Hz. The transmitting component 1904 can begin transmitting data bursts to the UE at the time slot according to a DRX cycle based at least in part on the DRX nipple value and a slot identifier of the time slot.

Timing component 1908 can determine a DRX nipple value based at least in part on capabilities of the UE, information from the UE, application requirements, and/or traffic conditions. The transmitting component 1904 may transmit a DRX short duration value to the UE.

The number and arrangement of components shown in fig. 19 are provided as examples. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in fig. 19. Further, two or more components shown in fig. 19 may be implemented within a single component, or a single component shown in fig. 19 may be implemented as multiple distributed components. Additionally or alternatively, the set of component(s) shown in fig. 19 may perform one or more functions described as being performed by another set of components shown in fig. 19.

The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of various aspects.

The following provides an overview of some aspects of the disclosure:

aspect 1: a method of wireless communication performed by a User Equipment (UE), comprising: obtaining Discontinuous Reception (DRX) nipple values corresponding to a number of hertz (Hz); sleep as part of the DRX cycle; and starting to wake up at a subframe based at least in part on the DRX short cadence value and a subframe identifier n of the subframe.

Aspect 2: the method of aspect 1, wherein the subframe identifier n is equal to (10 x a sequence frame number of a frame comprising the subframe) +a subframe number of the subframe within the frame.

Aspect 3: the method of claim 2, wherein the waking up comprises waking up if a first upper limit value of (n+1) the DRX short cycle value/1000) +1 is equal to a second upper limit value of (n+1) (the DRX short cycle value/1000).

Aspect 4: the method according to any of the claims 1-3, wherein the waking up comprises a duration waking up after a start of the subframe, wherein the duration comprises a DRX start offset mod (floor (1000/the DRX short cadence value)).

Aspect 5: the method of any of aspects 1-4, wherein the waking comprises starting an on duration timer.

Aspect 6: the method of any of aspects 1-5, wherein the waking up comprises waking up after a DRX slot offset from a beginning of the subframe.

Aspect 7: the method of any of aspects 1-5, wherein the waking up comprises waking up after a DRX start offset from a start of the subframe.

Aspect 8: the method of any of aspects 1-5, wherein the waking up comprises waking up after a DRX slot offset from a start of the subframe plus a DRX start offset.

Aspect 9: the method of any of aspects 1-8, further comprising skipping a subframe before waking up at the subframe based at least in part on a duty cycle corresponding to the DRX short cadence value.

Aspect 10: the method according to any of claims 1-9, wherein the obtaining comprises receiving the DRX short cadence value from a base station.

Aspect 11: the method according to any of the claims 1-10, wherein the DRX short cadence value is at least one of 45Hz, 48Hz, 60Hz, 75Hz, 80Hz, 90Hz or 120 Hz.

Aspect 12: a method of wireless communication performed by a base station, comprising: preparing communication with a User Equipment (UE) according to a Discontinuous Reception (DRX) nipple value corresponding to a number of hertz (Hz); and starting to transmit a data burst to the UE at a subframe according to a DRX cycle based at least in part on the DRX short cycle value and a subframe identifier n of the subframe.

Aspect 13: the method of aspect 12, wherein the subframe identifier n is equal to (10 x a sequence frame number of a frame comprising the subframe) +a subframe number of the subframe within the frame.

Aspect 14: the method of claim 13, wherein the transmitting starts at the subframe with a first upper limit value of (n+1) the DRX short cycle value/1000) +1 being equal to a second upper limit value of (n+1) (the DRX short cycle value/1000).

Aspect 15: the method according to any of the claims 12-14, wherein the transmitting comprises starting transmitting the data burst a duration after a start of the subframe, wherein the duration comprises a DRX start offset mod (floor (1000/the DRX short cadence value)).

Aspect 16: the method of any of claims 12-14, wherein the transmitting comprises transmitting the data burst based at least in part on a DRX slot offset from a beginning of the subframe.

Aspect 17: the method of any of aspects 12-14, wherein the transmitting comprises transmitting the data burst based at least in part on a DRX start offset from a start of the subframe.

Aspect 18: the method of any of claims 12-14, wherein the transmitting comprises transmitting the data burst based at least in part on a DRX slot offset from a start of the subframe plus a DRX start offset.

Aspect 19: the method of any of aspects 12-18, further comprising skipping a subframe before transmitting the data burst in the subframe based at least in part on a duty cycle corresponding to the DRX short cycle value.

Aspect 20: the method according to any of aspects 12-19, further comprising sending the DRX short cadence value to the UE.

Aspect 21: a method of wireless communication performed by a User Equipment (UE), comprising: obtaining Discontinuous Reception (DRX) nipple values corresponding to a number of hertz (Hz); sleep as part of the DRX cycle; and starting waking at a slot based at least in part on the DRX nipple value and a slot identifier k of the slot.

Aspect 22: the method of claim 21, wherein the slot identifier k is equal to ((10 x sequence frame number of a frame comprising a subframe including the slot + subframe number of the subframe within the frame) xslot per second) + slot number of the slot within the subframe.

Aspect 23: the method of claim 22, wherein the waking up comprises waking up if a first upper limit value +1 of (k x the DRX short cadence value/(1000 x time slots per second)) is equal to a second upper limit value of (k+1) x (the DRX short cadence value/(1000 x time slots per second)).

Aspect 24: the method according to any of the claims 21-23, wherein the waking up comprises a duration waking up after a start of the subframe, wherein the duration comprises a DRX start offset mod (floor (1000/DRX short cadence value)).

Aspect 25: the method of any of aspects 21-24, wherein the waking comprises starting an on duration timer.

Aspect 26: the method of any of claims 21-25, wherein the waking up comprises waking up after a DRX start slot offset from a start of the slot.

Aspect 27: the method of any of aspects 21-26, further comprising skipping subframes before waking up at the time slot based at least in part on a duty cycle corresponding to the DRX short cadence value.

Aspect 28: the method according to any of the claims 21-27, wherein the obtaining comprises receiving the DRX short cadence value from a base station.

Aspect 29: a method of wireless communication performed by a base station, comprising: preparing communication with a User Equipment (UE) according to a Discontinuous Reception (DRX) nipple value corresponding to hertz (Hz); and starting to transmit a data burst to the UE at a slot according to a DRX cycle based at least in part on the DRX nipple value and a slot identifier k of the slot.

Aspect 30: the method of claim 29, wherein the slot identifier k is equal to ((10 x sequence frame number of a frame comprising a subframe including the slot + subframe number of the subframe within the frame) xslot per second) + slot number of the slot within the subframe.

Aspect 31: the method of claim 30, wherein the transmitting is started at the time slot with a first upper limit value of (k x the DRX short cadence value/(1000 x time slot per second)) +1 equal to a second upper limit value of (k+1) (the DRX short cadence value/(1000 x time slot per second)).

Aspect 32: the method according to any of the claims 29-31, wherein the transmitting comprises starting transmitting the data burst a duration after a start of the subframe, wherein the duration comprises a DRX start offset mod (floor (1000/the DRX short cadence value)).

Aspect 33: the method of any of claims 29-32, wherein the transmitting comprises transmitting the data burst based at least in part on a DRX start slot offset from a start of the slot.

Aspect 34: the method according to any of the claims 29-33, further comprising sending the DRX short cadence value to the UE.

Aspect 35: an apparatus for wireless communication at an apparatus, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of one or more of aspects 1-34.

Aspect 36: an apparatus for wireless communication, comprising a memory and one or more processors coupled with the memory, the memory and the one or more processors configured to perform the method of one or more of aspects 1-34.

Aspect 37: an apparatus for wireless communication, comprising at least one means for performing the method of one or more of aspects 1-34.

Aspect 38: a non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more of aspects 1-34.

Aspect 39: a non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more of aspects 1-34.

As used herein, the term "component" is intended to be broadly interpreted as hardware and/or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other terminology, should be broadly interpreted to mean instructions, instruction sets, code segments, program code, programs, subroutines, software modules, applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures and/or functions, and the like. As used herein, a processor is implemented in hardware and/or a combination of hardware and software. It is to be understood that the systems and/or methods described herein may be implemented in various forms of hardware and/or combinations of hardware and software. The actual specialized control hardware or software code used to implement the systems and/or methods is not limiting of these aspects. Thus, the operations and behavior of the systems and/or methods were described without reference to the specific software code-it being understood that software and hardware can be designed to implement the systems and/or methods based at least in part on the description herein.

As used herein, satisfying a threshold may refer to a value greater than a threshold, greater than or equal to a threshold, less than or equal to a threshold, not equal to a threshold, etc., depending on the context.

Even though particular combinations of features are recited in the claims and/or disclosed in the specification, these combinations are not intended to limit the disclosure of aspects. Indeed, many of these features may be combined in ways not specifically recited in the claims and/or disclosed in the specification. Although each of the dependent claims listed below may be directly dependent on only one claim, the disclosure of aspects includes the combination of each dependent claim with each other claim in the claim set. As used herein, a phrase referring to "at least one" in a list of items refers to any combination of these items, including individual members. As an example, "at least one of a, b, or c" is intended to encompass a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination with a plurality of the same elements (e.g., a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b-b, b-b-c, c-c, and c-c, or any other ordering of a, b, and c).

No element, act, or instruction used herein should be construed as critical or essential unless explicitly described as such. In addition, as used herein, the articles "a" and "an" are intended to include one or more items, which may be used interchangeably with "one or more". Furthermore, as used herein, the article "the" is intended to include, and be used interchangeably with, one or more items referenced by the article "the". Further, as used herein, the terms "set" and "group" are intended to include one or more items (e.g., related items, unrelated items, or a combination of related and unrelated items), and are used interchangeably with "one or more. Where only one item is intended, the phrase "only one" or similar language is used. In addition, as used herein, the terms "having", and the like are intended to be open terms. Furthermore, unless explicitly stated otherwise, the phrase "based on" is intended to mean "based, at least in part, on". In addition, as used herein, the term "or" when used in series is intended to be inclusive and may be used interchangeably with "and/or" unless otherwise specifically indicated (e.g., if used in conjunction with "any" or "only one of).

Claims (30)

1. A User Equipment (UE) for wireless communication, comprising:

a memory; and

one or more processors coupled to the memory, the memory comprising instructions executable by the one or more processors to cause the UE to:

obtaining Discontinuous Reception (DRX) nipple values corresponding to a number of hertz (Hz);

sleep as part of the DRX cycle; and

a wake-up is initiated at a subframe based at least in part on the DRX short cadence value and a subframe identifier n of the subframe.

2. The UE of claim 1, wherein the subframe identifier n is equal to (10 x a sequence frame number of a frame comprising the subframe) +a subframe number of the subframe within the frame.

3. The UE of claim 2, wherein the memory further comprises instructions executable by the one or more processors to cause the UE to wake up if a first upper limit value of (n x the DRX short cycle value/1000) +1 is equal to a second upper limit value of (n+1) x (the DRX short cycle value/1000).

4. The UE of claim 3, wherein the memory further comprises instructions executable by the one or more processors to wake up a duration of the UE after a start of the subframe, wherein the duration comprises a DRX start offset mod (floor (1000/the DRX short cadence value)).

5. The UE of claim 1, wherein the memory further comprises instructions executable by the one or more processors to cause the UE to wake up after a DRX slot offset from a beginning of the subframe.

6. The UE of claim 1, wherein the memory further comprises instructions executable by the one or more processors to cause the UE to wake up after a DRX start offset from a start of the subframe.

7. The UE of claim 1, wherein the memory further comprises instructions executable by the one or more processors to cause the UE to wake up after a DRX slot offset from a start of the subframe plus a DRX start offset.

8. The UE of claim 1, wherein the memory further comprises instructions executable by the one or more processors to cause the UE to skip subframes before starting waking up at the subframes based at least in part on a duty cycle corresponding to the DRX short cadence value.

9. The UE of claim 1, wherein the memory further comprises instructions executable by the one or more processors to cause the UE to obtain the DRX short cadence value by receiving the DRX short cadence value from a base station.

10. The UE of claim 1, wherein the DRX short cadence value is at least one of 45Hz, 48Hz, 60Hz, 75Hz, 80Hz, 90Hz, or 120 Hz.

11. A base station for wireless communication, comprising:

a memory; and

one or more processors coupled to the memory, the memory comprising instructions executable by the one or more processors to cause the base station to:

preparing communication with a User Equipment (UE) according to a Discontinuous Reception (DRX) nipple value corresponding to a number of hertz (Hz); and

the method further includes starting to transmit a data burst to the UE at a subframe according to a DRX cycle based at least in part on the DRX short cadence value and a subframe identifier n of the subframe.

12. The base station of claim 11, wherein the subframe identifier n is equal to (10 x a sequence frame number of a frame comprising the subframe) +a subframe number of the subframe within the frame.

13. The base station of claim 12, wherein the memory further comprises instructions executable by the one or more processors to cause the base station to begin transmitting the data burst at the subframe if a first upper limit of (n x DRX short cadence value/1000) +1 is equal to a second upper limit of (n+1 x (the DRX short cadence value/1000).

14. The base station of claim 13, wherein the memory further comprises instructions executable by the one or more processors to cause the base station to begin transmitting the data burst a duration after a start of the subframe, wherein the duration comprises a DRX start offset mod (floor (1000/DRX short cadence value)).

15. The base station of claim 11, wherein the memory further comprises instructions executable by the one or more processors to cause the base station to transmit the data burst based at least in part on a DRX slot offset from a beginning of the subframe.

16. The base station of claim 11, wherein the memory further comprises instructions executable by the one or more processors to cause the base station to transmit the data burst based at least in part on a DRX start offset from a start of the subframe.

17. The base station of claim 11, wherein the memory further comprises instructions executable by the one or more processors to cause the base station to transmit the data burst based at least in part on a DRX slot offset from a start of the subframe plus a DRX start offset.

18. The base station of claim 11, wherein the memory further comprises instructions executable by the one or more processors to cause the base station to skip subframes before transmitting the data burst in the subframes based at least in part on a duty cycle corresponding to the DRX short cadence value.

19. The base station of claim 11, wherein the memory further comprises instructions executable by the one or more processors to cause the base station to transmit the DRX short cadence value to the UE.

20. A User Equipment (UE) for wireless communication, comprising:

a memory; and

one or more processors coupled to the memory, the memory comprising instructions executable by the one or more processors to cause the UE to:

obtaining Discontinuous Reception (DRX) nipple values corresponding to a number of hertz (Hz);

sleep as part of the DRX cycle; and

a wakeup is initiated at a slot based at least in part on the DRX nipple value and a slot identifier k of the slot.

21. The UE of claim 20, wherein the slot identifier k is equal to ((10 x a sequence frame number of a frame including a subframe of the slot + a subframe number of the subframe within the frame) xa slot per second) + a slot number of the slot within the subframe.

22. The UE of claim 21, wherein the waking up comprises waking up if a first upper limit value of (k x the DRX short cadence value/(1000 x slots per second)) +1 is equal to a second upper limit value of (k+1 x (the DRX short cadence value/(1000 x slots per second)).

23. The UE of claim 22, wherein the memory further comprises instructions executable by the one or more processors to wake up a duration of the UE after a start of the subframe, wherein the duration comprises a DRX start offset mod (floor (1000/the DRX short cadence value)).

24. The UE of claim 20, wherein the memory further comprises instructions executable by the one or more processors to cause the UE to wake up after a DRX start slot offset from a start of the slot.

25. The UE of claim 20, wherein the memory further comprises instructions executable by the one or more processors to cause the UE to begin waking up at the time slot based at least in part on a duty cycle corresponding to the DRX short cadence value.

26. The UE of claim 20, wherein the memory further comprises instructions executable by the one or more processors to cause the UE to obtain the DRX short cadence value by receiving the DRX short cadence value from a base station.

27. A base station for wireless communication, comprising:

a memory; and

one or more processors coupled to the memory, the memory comprising instructions executable by the one or more processors to cause the base station to:

preparing communication with a User Equipment (UE) according to a Discontinuous Reception (DRX) nipple value corresponding to hertz (Hz); and

data bursts are transmitted to the UE beginning at a slot according to a DRX cycle based at least in part on the DRX nipple value and a slot identifier k of the slot.

28. The base station of claim 27, wherein the slot identifier k is equal to ((10 x a sequence frame number of a frame including a subframe of the slot + a subframe number of the subframe within the frame) xa slot per second) + a slot number of the slot within the subframe.

29. The base station of claim 28, wherein the memory further comprises instructions executable by the one or more processors to cause the base station to begin transmitting the data burst at the time slot with a first upper limit value +1 of (k x the DRX short cadence value/(1000 x time slots per second)) equal to a second upper limit value of (k+1 x (the DRX short cadence value/(1000 x time slots per second)).

30. The base station of claim 27, wherein the memory further comprises instructions executable by the one or more processors to cause the base station to transmit the data burst based at least in part on a DRX start slot offset from a start of the slot.