WO2021159455A1 - Réduction de latence de transfert de données pour un dispositif mobile - Google Patents

Réduction de latence de transfert de données pour un dispositif mobile Download PDF

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Publication number
WO2021159455A1
WO2021159455A1 PCT/CN2020/075239 CN2020075239W WO2021159455A1 WO 2021159455 A1 WO2021159455 A1 WO 2021159455A1 CN 2020075239 W CN2020075239 W CN 2020075239W WO 2021159455 A1 WO2021159455 A1 WO 2021159455A1
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WO
WIPO (PCT)
Prior art keywords
mobile device
modem
application
signals
mode
Prior art date
Application number
PCT/CN2020/075239
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English (en)
Inventor
Yi Liu
Zhenqing CUI
Hong Wei
Xiangfeng KANG
Jinglin Zhang
Jinglei TIAN
Haojun WANG
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Qualcomm Incorporated
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Priority to PCT/CN2020/075239 priority Critical patent/WO2021159455A1/fr
Publication of WO2021159455A1 publication Critical patent/WO2021159455A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/12—Arrangements for remote connection or disconnection of substations or of equipment thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • aspects of the present disclosure relate generally to wireless communication systems, and more particularly, to operation of a mobile device in a wireless communication network. Certain aspects of the technology discussed below can enable and provide data transfer latency reduction for a mobile device.
  • Wireless communication networks are widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcast, and the like. These wireless networks may be multiple-access networks capable of supporting multiple users by sharing the available network resources. Such networks, which are usually multiple access networks, support communications for multiple users by sharing the available network resources.
  • a wireless communication network may include a number of base stations or node Bs that can support communication for a number of user equipments (UEs) .
  • a UE may communicate with a base station via downlink and uplink.
  • the downlink (or forward link) refers to the communication link from the base station to the UE
  • the uplink (or reverse link) refers to the communication link from the UE to the base station.
  • a base station may transmit data and control information on the downlink to a UE and/or may receive data and control information on the uplink from the UE.
  • a transmission from the base station may encounter interference due to transmissions from neighbor base stations or from other wireless radio frequency (RF) transmitters.
  • RF radio frequency
  • a transmission from the UE may encounter interference from uplink transmissions of other UEs communicating with the neighbor base stations or from other wireless RF transmitters. This interference may degrade performance on both the downlink and uplink.
  • a method includes executing, by a mobile device, an application associated with communication of data between the mobile device and a network device.
  • the method further includes detecting, by the mobile device, that the application is associated with a latency condition.
  • the method further includes, in response to detecting that the application is associated with the latency condition, providing, to a modem of the mobile device, a command to cause the modem to send one or more signals to enable a wake mode of the mobile device.
  • an apparatus configured for wireless communication includes means for storing an application associated with communication of data between a mobile device and a network device.
  • the apparatus further includes means for executing the application, for detecting that the application is associated with a latency condition, and for providing, in response to detecting that the application is associated with the latency condition, a command to cause means for sending to send one or more signals to enable a wake mode of the mobile device.
  • a non-transitory computer-readable medium has program code recorded thereon.
  • the program code comprising instructions executable by a processor to cause the processor to execute an application associated with communication of data between a mobile device and a network device and to detect that the application is associated with a latency condition.
  • the instructions are also executable by the processor to, in response to detecting that the application is associated with the latency condition, provide, to a modem of the mobile device, a command to cause the modem to send one or more signals to enable a wake mode of the mobile device.
  • an apparatus configured for wireless communication.
  • the apparatus includes at least one processor and a memory coupled to the processor.
  • the processor is configured to execute an application associated with communication of data between a mobile device and a network device and to detect that the application is associated with a latency condition.
  • the processor is further configured to, in response to detecting that the application is associated with the latency condition, provide, to a modem of the mobile device, a command to cause the modem to send one or more signals to enable a wake mode of the mobile device.
  • FIG. 1 is a block diagram illustrating details of a wireless communication system to reduce data transfer latency according to some aspects of the present disclosure.
  • FIG. 2 is a block diagram conceptually illustrating a design of a base station and a UE that is configured to reduce data transfer latency according to some aspects of the present disclosure.
  • FIG. 3 is another block diagram conceptually illustrating a design of a base station and a UE that is configured to reduce data transfer latency according to some aspects of the present disclosure.
  • FIG. 4 is a timing diagram illustrating examples of certain operations performed by a UE to reduce data transfer latency according to some aspects of the present disclosure.
  • FIG. 5 is a flow chart of a method of wireless communication performed by a UE to reduce data transfer latency according to some aspects of the present disclosure.
  • FIG. 6 is another flow chart of a method of wireless communication performed by a UE to reduce data transfer latency according to some aspects of the present disclosure.
  • FIG. 7 is a block diagram conceptually illustrating a design of a UE configured to reduce data transfer latency according to some embodiments of the present disclosure.
  • Mobile devices use communication networks to communicate data with network devices, such as base stations.
  • a mobile device may execute a program or application, and the program or application may specify data that is to be sent from the mobile device to a base station or provided by a base station (e.g., after retrieving the data from a server) to the mobile device.
  • Some programs and applications are sensitive to latency. To illustrate, certain games and other applications may involve relatively fast communication of data between a mobile device and a base station. If transfer of data between the base station and the mobile device is subject to latency, then usefulness or enjoyment of the games or other applications may be reduced.
  • an application processor of a mobile device is configured to execute an application and to determine that the application is subject to a latency condition.
  • the application may be indicated by a list of one or more applications that are sensitive to latency.
  • the application includes a game that is sensitive to data transfer latency in a wireless communication network.
  • the application processor In response to identifying that the application is subject to the latency condition, the application processor is configured to send a command to a modem of the mobile device.
  • the command causes the modem to generate one or more signals, such as by transmitting dummy data.
  • transmitting the dummy data causes the mobile device to avoid initiation of a network-specified sleep mode, such as a sleep mode of a connected-mode discontinuous reception (C-DRX) mode of operation of the mobile device.
  • C-DRX connected-mode discontinuous reception
  • the mobile device may send or receive data sooner as compared to other devices that allow a sleep mode of operation during execution of latency-sensitive applications. For example, by remaining in the wake mode of operation, the mobile device may be ready to send data to a base station instead of buffering the data and then waiting to send the data until termination of the sleep mode. As another example, by remaining in the wake mode of operation, the mobile device may be ready to receive data from a base station (e.g., in response to a push operation to push the data to the mobile device) instead of buffering the data at the base station and then sending the data upon termination of the sleep mode. Thus, operation of the mobile device according to the wake mode reduces latency of receiving data as compared to allowing the mobile device to enter a sleep mode.
  • this disclosure relates generally to providing or participating in communication as between two or more wireless devices in one or more wireless communications systems, also referred to as wireless communications networks.
  • the techniques and apparatus may be used for wireless communication networks such as code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, single-carrier FDMA (SC-FDMA) networks, LTE networks, GSM networks, 5 th Generation (5G) or new radio (NR) networks (sometimes referred to as “5G NR” networks/systems/devices) , as well as other communications networks.
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal FDMA
  • SC-FDMA single-carrier FDMA
  • LTE long-term evolution
  • GSM Global System for Mobile communications
  • 5G 5 th Generation
  • NR new radio
  • a CDMA network may implement a radio technology such as universal terrestrial radio access (UTRA) , cdma2000, and the like.
  • UTRA includes wideband-CDMA (W-CDMA) and low chip rate (LCR) .
  • CDMA2000 covers IS-2000, IS-95, and IS-856 standards.
  • a TDMA network may, for example implement a radio technology such as GSM.
  • 3GPP defines standards for the GSM EDGE (enhanced data rates for GSM evolution) radio access network (RAN) , also denoted as GERAN.
  • GERAN is the radio component of GSM/EDGE, together with the network that joins the base stations (for example, the Ater and Abis interfaces) and the base station controllers (A interfaces, etc. ) .
  • the radio access network represents a component of a GSM network, through which phone calls and packet data are routed from and to the public switched telephone network (PSTN) and Internet to and from subscriber handsets, also known as user terminals or user equipments (UEs) .
  • PSTN public switched telephone network
  • UEs subscriber handsets
  • a mobile phone operator's network may comprise one or more GERANs, which may be coupled with Universal Terrestrial Radio Access Networks (UTRANs) in the case of a UMTS/GSM network.
  • UTRANs Universal Terrestrial Radio Access Networks
  • An operator network may also include one or more LTE networks, and/or one or more other networks.
  • the various different network types may use different radio access technologies (RATs) and radio access networks (RANs) .
  • RATs radio access technologies
  • RANs radio access networks
  • An OFDMA network may implement a radio technology such as evolved UTRA (E-UTRA) , IEEE 802.11, IEEE 802.16, IEEE 802.20, flash-OFDM and the like.
  • E-UTRA evolved UTRA
  • GSM Global System for Mobile Communications
  • LTE long term evolution
  • UTRA, E-UTRA, GSM, UMTS and LTE are described in documents provided from an organization named “3rd Generation Partnership Project” (3GPP)
  • cdma2000 is described in documents from an organization named “3rd Generation Partnership Project 2” (3GPP2) .
  • 3GPP 3rd Generation Partnership Project
  • 3GPP long term evolution LTE
  • UMTS universal mobile telecommunications system
  • the 3GPP may define specifications for the next generation of mobile networks, mobile systems, and mobile devices.
  • the present disclosure is concerned with the evolution of wireless technologies from LTE, 4G, 5G, NR, and beyond with shared access to wireless spectrum between networks using a collection of new and different radio access technologies or radio air interfaces.
  • 5G networks contemplate diverse deployments, diverse spectrum, and diverse services and devices that may be implemented using an OFDM-based unified, air interface. To achieve these goals, further enhancements to LTE and LTE-A are considered in addition to development of the new radio technology for 5G NR networks.
  • the 5G NR will be capable of scaling to provide coverage (1) to a massive Internet of things (IoTs) with an ultra-high density (e.g., ⁇ 1M nodes/km 2 ) , ultra-low complexity (e.g., ⁇ 10s of bits/sec) , ultra-low energy (e.g., ⁇ 10+ years of battery life) , and deep coverage with the capability to reach challenging locations; (2) including mission-critical control with strong security to safeguard sensitive personal, financial, or classified information, ultra-high reliability (e.g., ⁇ 99.9999%reliability) , ultra-low latency (e.g., ⁇ 1 ms) , and users with wide ranges of mobility or lack thereof; and (3) with enhanced mobile broadband including extreme high capacity (e.g., ⁇ 10 Tbps/km 2 ) , extreme data rates (e.g., multi-Gbps rate, 100+ Mbps user experienced rates) , and deep awareness with advanced discovery and optimizations.
  • IoTs Internet of things
  • 5G NR devices, networks, and systems may be implemented to use optimized OFDM-based waveform features. These features may include scalable numerology and transmission time intervals (TTIs) ; a common, flexible framework to efficiently multiplex services and features with a dynamic, low-latency time division duplex (TDD) /frequency division duplex (FDD) design; and advanced wireless technologies, such as massive multiple input, multiple output (MIMO) , robust millimeter wave (mmWave) transmissions, advanced channel coding, and device-centric mobility.
  • TTIs transmission time intervals
  • TDD dynamic, low-latency time division duplex
  • FDD frequency division duplex
  • advanced wireless technologies such as massive multiple input, multiple output (MIMO) , robust millimeter wave (mmWave) transmissions, advanced channel coding, and device-centric mobility.
  • Scalability of the numerology in 5G NR with scaling of subcarrier spacing, may efficiently address operating diverse services across diverse spectrum and diverse deployments.
  • subcarrier spacing may occur with 15 kHz, for example over 1, 5, 10, 20 MHz, and the like bandwidth.
  • subcarrier spacing may occur with 30 kHz over 80/100 MHz bandwidth.
  • the subcarrier spacing may occur with 60 kHz over a 160 MHz bandwidth.
  • subcarrier spacing may occur with 120 kHz over a 500MHz bandwidth.
  • the scalable numerology of 5G NR facilitates scalable TTI for diverse latency and quality of service (QoS) requirements. For example, shorter TTI may be used for low latency and high reliability, while longer TTI may be used for higher spectral efficiency.
  • QoS quality of service
  • 5G NR also contemplates a self-contained integrated subframe design with uplink/downlink scheduling information, data, and acknowledgement in the same subframe.
  • the self-contained integrated subframe supports communications in unlicensed or contention-based shared spectrum, adaptive uplink/downlink that may be flexibly configured on a per-cell basis to dynamically switch between uplink and downlink to meet the current traffic needs.
  • LTE terminology may be used as illustrative examples in portions of the description below; however, the description is not intended to be limited to LTE applications.
  • the present disclosure is concerned with shared access to wireless spectrum between networks using different radio access technologies or radio air interfaces, such as those of 5G NR.
  • wireless communication networks adapted according to the concepts herein may operate with any combination of licensed or unlicensed spectrum depending on loading and availability. Accordingly, it will be apparent to one of skill in the art that the systems, apparatus and methods described herein may be applied to other communications systems and applications than the particular examples provided.
  • Implementations may range from chip-level or modular components to non-modular, non-chip-level implementations and further to aggregated, distributed, or OEM devices or systems incorporating one or more described aspects.
  • devices incorporating described aspects and features may also necessarily include additional components and features for implementation and practice of claimed and described embodiments. It is intended that innovations described herein may be practiced in a wide variety of implementations, including both large/small devices, chip-level components, multi-component systems (e.g. RF-chain, communication interface, processor) , distributed arrangements, end-user devices, etc. of varying sizes, shapes, and constitution.
  • FIG. 1 shows wireless network 100 for communication according to some embodiments.
  • Wireless network 100 may, for example, comprise a 5G wireless network.
  • components appearing in FIG. 1 are likely to have related counterparts in other network arrangements including, for example, cellular-style network arrangements and non-cellular-style-network arrangements (e.g., device to device or peer to peer or ad hoc network arrangements, etc. ) .
  • Wireless network 100 illustrated in FIG. 1 includes a number of base stations 105 and other network entities.
  • a base station may be a station that communicates with the UEs and may also be referred to as an evolved node B (eNB) , a next generation eNB (gNB) , an access point, and the like.
  • eNB evolved node B
  • gNB next generation eNB
  • Each base station 105 may provide communication coverage for a particular geographic area.
  • the term “cell” can refer to this particular geographic coverage area of a base station and/or a base station subsystem serving the coverage area, depending on the context in which the term is used.
  • base stations 105 may be associated with a same operator or different operators (e.g., wireless network 100 may comprise a plurality of operator wireless networks) , and may provide wireless communications using one or more of the same frequencies (e.g., one or more frequency bands in licensed spectrum, unlicensed spectrum, or a combination thereof) as a neighboring cell.
  • an individual base station 105 or UE 115 may be operated by more than one network operating entity.
  • each base station 105 and UE 115 may be operated by a single network operating entity.
  • a base station may provide communication coverage for a macro cell or a small cell, such as a pico cell or a femto cell, and/or other types of cell.
  • a macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscriptions with the network provider.
  • a small cell such as a pico cell, would generally cover a relatively smaller geographic area and may allow unrestricted access by UEs with service subscriptions with the network provider.
  • a small cell such as a femto cell, would also generally cover a relatively small geographic area (e.g., a home) and, in addition to unrestricted access, may also provide restricted access by UEs having an association with the femto cell (e.g., UEs in a closed subscriber group (CSG) , UEs for users in the home, and the like) .
  • a base station for a macro cell may be referred to as a macro base station.
  • a base station for a small cell may be referred to as a small cell base station, a pico base station, a femto base station or a home base station. In the example shown in FIG.
  • base stations 105d and 105e are regular macro base stations, while base stations 105a-105c are macro base stations enabled with one of 3 dimension (3D) , full dimension (FD) , or massive MIMO. Base stations 105a-105c take advantage of their higher dimension MIMO capabilities to exploit 3D beamforming in both elevation and azimuth beamforming to increase coverage and capacity.
  • Base station 105f is a small cell base station which may be a home node or portable access point.
  • a base station may support one or multiple (e.g., two, three, four, and the like) cells.
  • Wireless network 100 may support synchronous or asynchronous operation.
  • the base stations may have similar frame timing, and transmissions from different base stations may be approximately aligned in time.
  • the base stations may have different frame timing, and transmissions from different base stations may not be aligned in time.
  • networks may be enabled or configured to handle dynamic switching between synchronous or asynchronous operations.
  • UEs 115 are dispersed throughout the wireless network 100, and each UE may be stationary or mobile.
  • a mobile apparatus is commonly referred to as user equipment (UE) in standards and specifications promulgated by the 3rd Generation Partnership Project (3GPP)
  • UE user equipment
  • 3GPP 3rd Generation Partnership Project
  • a mobile station MS
  • subscriber station a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal (AT) , a mobile terminal, a wireless terminal, a remote terminal, a handset, a terminal, a user agent, a mobile client, a client, or some other suitable terminology.
  • AT access terminal
  • a “mobile” apparatus or UE need not necessarily have a capability to move, and may be stationary.
  • Some non-limiting examples of a mobile apparatus such as may comprise embodiments of one or more of UEs 115, include a mobile, a cellular (cell) phone, a smart phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a laptop, a personal computer (PC) , a notebook, a netbook, a smart book, a tablet, and a personal digital assistant (PDA) .
  • a mobile such as may comprise embodiments of one or more of UEs 115, include a mobile, a cellular (cell) phone, a smart phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a laptop, a personal computer (PC) , a notebook, a netbook, a smart book, a tablet, and a personal digital assistant (PDA) .
  • PDA personal digital assistant
  • a mobile apparatus may additionally be an “Internet of things” (IoT) or “Internet of everything” (IoE) device such as an automotive or other transportation vehicle, a satellite radio, a global positioning system (GPS) device, a logistics controller, a drone, a multi-copter, a quad-copter, a smart energy or security device, a solar panel or solar array, municipal lighting, water, or other infrastructure; industrial automation and enterprise devices; consumer and wearable devices, such as eyewear, a wearable camera, a smart watch, a health or fitness tracker, a mammal implantable device, gesture tracking device, medical device, a digital audio player (e.g., MP3 player) , a camera, a game console, etc.
  • IoT Internet of things
  • IoE Internet of everything
  • a UE may be a device that includes a Universal Integrated Circuit Card (UICC) .
  • a UE may be a device that does not include a UICC.
  • UEs that do not include UICCs may also be referred to as IoE devices.
  • a UE may also be a machine specifically configured for connected communication, including machine type communication (MTC) , enhanced MTC (eMTC) , narrowband IoT (NB-IoT) and the like.
  • MTC machine type communication
  • eMTC enhanced MTC
  • NB-IoT narrowband IoT
  • UEs 115e-115k illustrated in FIG. 1 are examples of various machines configured for communication that access wireless network 100.
  • a mobile apparatus such as UEs 115, may be able to communicate with any type of the base stations, whether macro base stations, pico base stations, femto base stations, relays, and the like.
  • a lightning bolt e.g., communication link
  • a serving base station which is a base station designated to serve the UE on the downlink and/or uplink, or desired transmission between base stations, and backhaul transmissions between base stations.
  • Backhaul communication between base stations of wireless network 100 may occur using wired and/or wireless communication links.
  • base stations 105a-105c serve UEs 115a and 115b using 3D beamforming and coordinated spatial techniques, such as coordinated multipoint (CoMP) or multi-connectivity.
  • Macro base station 105d performs backhaul communications with base stations 105a-105c, as well as small cell, base station 105f.
  • Macro base station 105d also transmits multicast services which are subscribed to and received by UEs 115c and 115d.
  • Such multicast services may include mobile television or stream video, or may include other services for providing community information, such as weather emergencies or alerts, such as Amber alerts or gray alerts.
  • Wireless network 100 of embodiments supports mission critical communications with ultra-reliable and redundant links for mission critical devices, such UE 115e, which is a drone. Redundant communication links with UE 115e include from macro base stations 105d and 105e, as well as small cell base station 105f.
  • UE 115f thermometer
  • UE 115g smart meter
  • UE 115h wearable device
  • Wireless network 100 may also provide additional network efficiency through dynamic, low-latency TDD/FDD communications, such as in a vehicle-to-vehicle (V2V) mesh network between UEs 115i-115k communicating with macro base station 105e.
  • V2V vehicle-to-vehicle
  • FIG. 2 shows a block diagram of a design of a base station 105 and a UE 115, which may be any of the base stations and one of the UEs in FIG. 1.
  • base station 105 may be small cell base station 105f in FIG. 1
  • UE 115 may be UE 115c or 115D operating in a service area of base station 105f, which in order to access small cell base station 105f, would be included in a list of accessible UEs for small cell base station 105f.
  • Base station 105 may also be a base station of some other type. As shown in FIG. 2, base station 105 may be equipped with antennas 234a through 234t, and UE 115 may be equipped with antennas 252a through 252r for facilitating wireless communications.
  • a transmit processor 220 may receive data from a data source 212 and control information from a controller/processor 240.
  • the control information may be for the physical broadcast channel (PBCH) , physical control format indicator channel (PCFICH) , physical hybrid-ARQ (automatic repeat request) indicator channel (PHICH) , physical downlink control channel (PDCCH) , enhanced physical downlink control channel (EPDCCH) , MTC physical downlink control channel (MPDCCH) , etc.
  • the data may be for the PDSCH, etc.
  • the transmit processor 220 may process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively.
  • the transmit processor 220 may also generate reference symbols, e.g., for the primary synchronization signal (PSS) and secondary synchronization signal (SSS) , and cell-specific reference signal.
  • Transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, and/or the reference symbols, if applicable, and may provide output symbol streams to modulators (MODs) 232a through 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM, etc. ) to obtain an output sample stream.
  • TX multiple-input multiple-output
  • MIMO multiple-input multiple-output
  • Each modulator 232 may process a respective output symbol stream (e.g., for OFDM, etc. ) to obtain an output sample stream.
  • Each modulator 232 may additionally or alternatively process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. Downlink signals from modulators 232a through 232t may be transmitted via the antennas 234a through 234t, respectively.
  • the antennas 252a through 252r may receive the downlink signals from the base station 105 and may provide received signals to the demodulators (DEMODs) 254a through 254r, respectively.
  • Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a respective received signal to obtain input samples.
  • Each demodulator 254 may further process the input samples (e.g., for OFDM, etc. ) to obtain received symbols.
  • MIMO detector 256 may obtain received symbols from demodulators 254a through 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols.
  • Receive processor 258 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for the UE 115 to a data sink 260, and provide decoded control information to a controller/processor 280.
  • a transmit processor 264 may receive and process data (e.g., for the physical uplink shared channel (PUSCH) ) from a data source 262 and control information (e.g., for the physical uplink control channel (PUCCH) ) from the controller/processor 280. Transmit processor 264 may also generate reference symbols for a reference signal. The symbols from the transmit processor 264 may be precoded by TX MIMO processor 266 if applicable, further processed by the modulators 254a through 254r (e.g., for SC-FDM, etc. ) , and transmitted to the base station 105.
  • data e.g., for the physical uplink shared channel (PUSCH)
  • control information e.g., for the physical uplink control channel (PUCCH)
  • PUCCH physical uplink control channel
  • the uplink signals from UE 115 may be received by antennas 234, processed by demodulators 232, detected by MIMO detector 236 if applicable, and further processed by receive processor 238 to obtain decoded data and control information sent by UE 115.
  • Processor 238 may provide the decoded data to data sink 239 and the decoded control information to controller/processor 240.
  • Controllers/processors 240 and 280 may direct the operation at base station 105 and UE 115, respectively. Controller/processor 240 and/or other processors and modules at base station 105 and/or controller/processor 28 and/or other processors and modules at UE 115 may perform or direct the execution of various processes for the techniques described herein, such as to perform or direct the execution illustrated in FIGS. 5 and 6, and/or other processes for the techniques described herein.
  • Memories 242 and 282 may store data and program codes for base station 105 and UE 115, respectively.
  • Scheduler 244 may schedule UEs for data transmission on the downlink and/or uplink.
  • Wireless communications systems operated by different network operating entities may share spectrum.
  • a network operating entity may be configured to use an entirety of a designated shared spectrum for at least a period of time before another network operating entity uses the entirety of the designated shared spectrum for a different period of time.
  • certain resources e.g., time
  • a network operating entity may be allocated certain time resources reserved for exclusive communication by the network operating entity using the entirety of the shared spectrum.
  • the network operating entity may also be allocated other time resources where the entity is given priority over other network operating entities to communicate using the shared spectrum.
  • These time resources, prioritized for use by the network operating entity may be utilized by other network operating entities on an opportunistic basis if the prioritized network operating entity does not utilize the resources. Additional time resources may be allocated for any network operator to use on an opportunistic basis.
  • Access to the shared spectrum and the arbitration of time resources among different network operating entities may be centrally controlled by a separate entity, autonomously determined by a predefined arbitration scheme, or dynamically determined based on interactions between wireless nodes of the network operators.
  • UE 115 and base station 105 may operate in a shared radio frequency spectrum band, which may include licensed or unlicensed (e.g., contention-based) frequency spectrum.
  • UEs 115 or base stations 105 may traditionally perform a medium-sensing procedure to contend for access to the frequency spectrum.
  • UE 115 or base station 105 may perform a listen before talk (LBT) procedure such as a clear channel assessment (CCA) prior to communicating in order to determine whether the shared channel is available.
  • LBT listen before talk
  • CCA clear channel assessment
  • a CCA may include an energy detection procedure to determine whether there are any other active transmissions.
  • a device may infer that a change in a received signal strength indicator (RSSI) of a power meter indicates that a channel is occupied.
  • RSSI received signal strength indicator
  • a CCA also may include detection of specific sequences that indicate use of the channel.
  • another device may transmit a specific preamble prior to transmitting a data sequence.
  • an LBT procedure may include a wireless node adjusting its own backoff window based on the amount of energy detected on a channel and/or the acknowledge/negative-acknowledge (ACK/NACK) feedback for its own transmitted packets as a proxy for collisions.
  • ACK/NACK acknowledge/negative-acknowledge
  • FIG. 3 is a block diagram of an example wireless communications system 300 that enables data transfer latency reduction.
  • the wireless communications system 300 may implement aspects of the wireless communication system 100 of FIG. 1.
  • the wireless communications system 300 may include the base station 105.
  • the base station 105 may include one or more mobile devices, such as the UE 115. Although one UE 115 and one base station 105 are illustrated in FIG. 3, in other implementations, the wireless communications system 300 may include multiple UEs 115, multiple base stations 105, or both.
  • FIG. 3 also illustrates that the UE 115 includes an application processor 302 and a memory 330.
  • the application processor 302 is coupled to the memory 330.
  • the application processor 302 corresponds to the controller/processor 280
  • the memory 330 corresponds to the memory 282.
  • the application processor 302 may be configured to retrieve instructions 304 from the memory 330 and to execute the instructions 304 to perform, initiate, or control one or more operations described herein.
  • the UE 115 also includes a modem 338.
  • the modem 338 includes one or more components described with reference to FIG. 2.
  • the modem 338 may include any of the modulator/demodulators 254a-r, the MIMO detector 256, the receive processor 258, the data sink 260, the TX MIMO processor 266, the transmit processor 264, the data source 262, one or more other components, or a combination thereof.
  • the modem 338 may be coupled to one or more of the antennas 252a-r.
  • the modem 338 includes a latency reducer circuit 340.
  • the modem 338 is coupled to the application processor 302 via an interface 320.
  • the interface 320 may include a serial interface, a parallel interface, a hardware interface (e.g., a bus) , a software interface, an on-chip interface (e.g., where the application processor 302 and the modem 338 are included within a common integrated circuit, such as a system-on-chip (SoC) device) , a chip-to-chip interface (e.g., where the application processor 302 and the modem 338 are included within separate integrated circuits) , or one or more other interfaces, as illustrative examples.
  • SoC system-on-chip
  • the UE 115 may further include a repeat timer 334.
  • the repeat timer 334 may be coupled to the application processor 302 and to the modem 338 (e.g., to the latency reducer circuit 340) .
  • the repeat timer 334 may be coupled to the interface 320, to one or more other interfaces, or a combination thereof.
  • FIG. 3 illustrates that the base station 105 includes a controller 370 (e.g., the controller/processor 240) .
  • the controller 370 may include a memory storing instructions and a processor configured to execute the instructions to perform certain operations, such as to communicate with the UE 115.
  • the UE 115 is configured to communicate with the base station 105.
  • the application processor 302 may execute the instructions 304 to initiate transmission of signals to the base station 105 and to process signals received from the base station 105.
  • the UE 115 is configured to operate based on a connected-mode discontinuous reception (C-DRX) mode of operation.
  • C-DRX connected-mode discontinuous reception
  • operating according to the C-DRX mode may include entering a sleep state and periodically waking from the sleep state to monitor for messages from the base station 105.
  • one or more components of the modem 338 may enter a low power state.
  • the modulator/demodulators 254a-r, the MIMO detector 256, the receive processor 258, the data sink 260, the TX MIMO processor 266, the transmit processor 264, the data source 262, or one or more other components may be operated according to the low power state during the sleep mode.
  • the components may be operated according to a second state associated with a power consumption that is greater as compared to the low power state.
  • the base station 105 is configured to initiate the C-DRX mode of the UE 115.
  • the base station 105 may maintain a C-DRX schedule 372 indicating C-DRX cycles of UEs in communication with the base station 105.
  • the base station 105 may provide a C-DRX configuration message to the UE 115 indicating one or more C-DRX parameters, such as parameters of a particular C-DRX schedule 372 associated with the UE 115.
  • the application processor 302 is configured to execute an application 310.
  • the application processor 302 is configured to retrieve the application 310 from the memory 330.
  • the UE 115 may receive user input (e.g., via a user interface, such as a touchscreen display) and to retrieve the application 310 from the memory 330 in response to the user input.
  • the application 310 is associated with communication of data between the base station 105 and the UE 115.
  • execution of the application 310 may cause the UE 115 to send data (e.g., data 356) to the base station 105.
  • execution of the application 310 may cause the UE 115 to request data (e.g., the data 356) , such as from a server, and the data may be sent from the base station 105 to the UE 115.
  • data e.g., the data 356
  • data e.g., the data 356
  • data may be pushed from the base station 105 to the UE 115.
  • the application 310 is associated with a latency condition.
  • the application 310 may correspond to a game that is sensitive to latency of data transfer between the base station 105 and the UE 115.
  • certain games and other applications may involve relatively fast data communication between the UE 115 and the base station 105. If transfer of data between the base station 105 and the UE 115 is subject to latency, then usefulness or enjoyment of the games or other applications may be reduced.
  • the application processor 302 is configured to determine that the application 310 is associated with a latency condition.
  • the UE 115 may receive a list 332 of one or more applications associated with the latency condition.
  • the UE 115 may receive the list 332 from a manufacturer of the UE 115, from a service provider associated with the UE 115, from a software developer of the application 310, from a software developer of an operating system of the UE 115, or from another source, as illustrative examples.
  • the UE 115 upon downloading the application 310 (e.g., using a digital distribution platform) , the UE 115 adds an indication of the application 310 to the list 332.
  • the UE 115 may be configured to delete the indication of the application 310 from the list 332 upon deletion of the application 310 from the UE 115.
  • the application processor 302 may access the list 332 to determine whether the applications (e.g., the application 310) are indicated by the list.
  • the list 332 may include one or more application names, and the application processor 302 may compare a name of the application 310 to the one or more application names indicated by the list 332 to determine whether the application 310 is subject to the latency condition.
  • the list 332 may include other information (e.g., metadata) checked by the application processor 302 to identify whether the application 310 is associated with the latency condition.
  • the list 332 may include one or more modes or operating states of the application that are subject to the latency condition, one or more other modes or operating states of the application that are not subject to the latency condition, or a combination thereof.
  • the application processor 302 In response to detecting (e.g., based on the list 332) that the application 310 is associated with the latency condition, the application processor 302 is configured to provide a command 312 to the modem 338 to maintain a wake mode of the UE 115.
  • the command 312 includes or corresponds to a value of an enable signal 314.
  • the application processor 302 may be configured to set a first value 316 (e.g., a logic “1” value or a logic “0” value) of the enable signal 314 to indicate that the modem 338 is to maintain the wake mode of the UE 115.
  • the application processor 302 may set a second value 318 (e.g., a logic “0” value or a logic “1” value) of the enable signal 314, which may indicate that the UE 115 may enter a sleep mode.
  • the modem 338 is configured to send, in response to the command 312, one or more signals 350 to enable the wake mode of the UE 115.
  • the one or more signals 350 may enable the UE 115 to maintain the wake mode by causing the UE 115 to avoid initiation of a sleep mode, such as a sleep mode associated with a C-DRX cycle of the UE 115.
  • a sleep mode is initiated by a UE 115 if no data is transmitted within a threshold time interval.
  • the UE 115 may reset a value 336 of the repeat timer 334.
  • the value 336 may indicate an amount of time until initiation of the sleep mode.
  • the repeat timer 334 may increment (or decrement) the value 336 of the repeat timer 334.
  • the modem 338 may initiate a sleep mode, such as by initiating a low power state of one or more components of the modem 338.
  • the value 336 may be reset, and the modem may remain in the wake mode (until the value 336 reaches the threshold value) .
  • the modem 338 is configured to send the one or more signals 350.
  • the value 336 of the repeat timer 334 may be reset (e.g., by the modem 338, by the application processor 302, or by another component of the UE 115) .
  • initiation of a sleep mode e.g., a sleep mode of a C-DRX cycle
  • the one or more signals 350 include or indicate dummy data 352.
  • the dummy data 352 may include all logic “0” values, all logic “1” values, alternating logic “0” values and logic “1” values, or one or more other combinations of values, as illustrative examples.
  • the dummy data 352 has a protocol data unit (PDU) format and includes one or more PDUs.
  • PDU protocol data unit
  • the latency reducer circuit 340 is configured to generate the dummy data 352 in response to the command 312.
  • the latency reducer circuit 340 may include a digital logic circuit having an input configured to receive the enable signal 314.
  • the digital logic circuit may be configured to generate, based on the first value 316 of the enable signal 314, a string of logic “0” values of the dummy data 352, a string logic “1” values of the dummy data 352, a string of alternating logic “0” values and logic “1” values of the dummy data 352, or one or more other combinations of values, as illustrative examples.
  • the latency reducer circuit 340 is configured to randomly or pseudo-randomly generate the dummy data 352.
  • the latency reducer circuit 340 may include a pseudo-random number generator (PRNG) circuit having an input configured to receive the enable signal 314.
  • the PRNG circuit may be configured to generate, based on the first value 316 of the enable signal 314, a pseudo-random string of values of the dummy data 352.
  • PRNG pseudo-random number generator
  • the dummy data 352 may be stored at a memory, such as the memory 330.
  • the latency reducer circuit 340 may be configured to retrieve the dummy data 352 from the memory 330.
  • the application processor 302 may be configured to provide the dummy data 352 to the modem 338 (e.g., in connection with the command 312) .
  • the one or more signals 350 are associated with a first layer of a wireless communication protocol used for communications between the UE 115 and the base station 105, and the data 356 is associated with a second layer of the wireless communication protocol.
  • the second layer may be a “higher” layer in the wireless communication protocol than the first layer.
  • the one or more signals 350 may be associated with a data link layer of the wireless communication protocol (conceptually depicted in FIG. 3 as data link layer 354 for illustration)
  • the data 356 may be associated with an application layer of the wireless communication protocol (conceptually depicted in FIG. 3 as application layer 358 for illustration) .
  • the data link layer 354 may correspond to “layer2” of the wireless communication protocol, such as a media access control (MAC) layer, a radio link control (RLC) layer, a packet data convergence protocol (PDCP) layer, one or more other layers, or a combination thereof.
  • the application layer 358 includes a transmission control protocol (TCP) layer or a user datagram protocol (UDP) layer.
  • TCP transmission control protocol
  • UDP user datagram protocol
  • the data 356 may include TCP or UDP traffic, and the dummy data 352 may exclude TCP or UDP traffic.
  • the base station 105 may be configured to receive the one or more signals 350 from the UE 115. In response to receiving the one or more signals 350 from the UE 115, the base station 105 may avoid scheduling the UE 115 for one or more C-DRX cycles. For example, in response to receiving the one or more signals 350 from the UE 115, the base station 105 may avoid adding an indication of an upcoming C-DRX cycle associated with the UE 115 to the C-DRX schedule 372. In another example, if the C-DRX schedule 372 indicates an upcoming C-DRX cycle associated with the UE 115, the base station 105 may delete the indication in response to receiving the one or more signals 350.
  • the application processor 302 is configured to transition the enable signal 314 from the first value 316 to the second value 318. Transitioning the enable signal 314 from the first value 316 to the second value 318 may allow the modem 338 to enter a sleep mode (e.g., by allowing the modem 338 to enter a sleep mode of a C-DRX cycle upon the value 336 of the repeat timer 334 reaching a threshold value) .
  • the application processor 302 may be configured to detect an idle condition associated with the application 310.
  • the idle condition may correspond to or include a period of user inactivity (e.g., where no user input associated with the application 310 is received for a threshold time period) , a context switch by the UE 115 from the application 310 to another program or application, exiting of the application 310, detection of a lock mode of the UE 115 (e.g., where a user locks the UE 115) , one or more other conditions, or a combination thereof.
  • the application processor 302 may transition the enable signal 314 to the second value 318 to indicate that the modem 338 is to allow termination of the wake mode of the UE 115.
  • operations of FIG. 4 are selectively performed by the UE 115 based on a communication mode of communicating with the base station 105.
  • operations of FIG. 4 may be performed in a communication mode that utilizes a network-specified idle mode of UEs 115, such as a C-DRX mode.
  • a 5G NR standalone (SA) communication mode includes one or more network-specified idle modes, such as a C-DRX mode.
  • a 5G NR mode is performed by the UE 115 by communicating with one or more 5G NR base stations without communicating with one or more 4G LTE base stations (e.g., without receiving “support” from one or more 4G LTE base stations) .
  • the UE 115 may be configured to enable use the command 312 during one communication mode (e.g., a 5G NR standalone mode) and to disable use of the command 312 during another communication mode, such as during a 5G NR non-standalone (NSA) mode.
  • one communication mode e.g., a 5G NR standalone mode
  • another communication mode such as during a 5G NR non-standalone (NSA) mode.
  • NSA non-standalone
  • a duration associated with the repeat timer 334 is less than a duration of a network-specified inactivity timer, such as a duration of a DRX inactivity timer indicated by a radio resource control (RRC) reconfiguration message sent by the base station 105 to the UE 115.
  • the RRC reconfiguration message may indicate that the UE 105 is to enter a sleep mode upon expiration of the DRX inactivity timer.
  • the UE 115 may be configured to determine a duration of the repeat timer 334 that is less than the duration of the DRX inactivity timer (e.g., by subtracting a particular amount from the duration of the DRX inactivity timer) .
  • a duration of the DRX inactivity timer may be 60 milliseconds (ms) , and the duration of the repeat timer 334 may be 30 ms, 10 ms, or another duration less than 60 ms.
  • expiration of the DRX inactivity timer may be avoided (because the duration of the repeat timer 334 is less than the duration of the DRX inactivity timer) .
  • the UE 115 may avoid initiation of a sleep mode.
  • the base station 105 may detect that the UE 115 is in a wake mode. As a result, latency data transfer between the base station 105 and the UE 115 may be reduced.
  • the UE 115 may send or receive data sooner as compared to other devices that enter a sleep mode of operation during execution of latency-sensitive applications. For example, by remaining in the wake mode of operation, the UE 115 may be ready to send the data 356 to the base station 105 (e.g., in response to user input at the UE 115) instead of buffering the data 356 and then waiting to send the data 356 until termination of the sleep mode.
  • the UE 115 may be ready to receive the data 356 from the base station 105 (e.g., in response to a push operation to push the data 356 to the UE 115) instead of buffering the data 356 at the base station 105 and then sending the data 356 to the UE 115 upon termination of the sleep mode.
  • operation of the UE 115 according to the wake mode reduces latency of receiving the data 356 as compared to allowing the UE 115 to enter a sleep mode.
  • timing diagram 400 illustrates an example of a C-DRX cycle 402 and a C-DRX cycle 452.
  • the UE 115 is configured to operate according to the C-DRX cycle 402 when no latency-sensitive applications are executed by the application processor 302.
  • the UE 115 may be configured to operate according to the C-DRX cycle 402 when the enable signal 314 has the second value 318.
  • the UE 115 During operation according to the C-DRX cycle 402, the UE 115 operates in a wake mode 404 for a wake duration 406.
  • the wake mode 404 may be followed by a sleep mode 408 having a sleep duration 410.
  • the UE 115 may monitor for messages from the base station 105 (e.g., by monitoring a control channel for messages from the base station 105) , may send data to the base station 105, or may receive data from the base station 105.
  • one or more components of the UE 115 e.g., one or more components of the modem 338) may operate in a low power state.
  • the UE 115 is configured to operate according to the C-DRX cycle 452 when one or more latency-sensitive applications (e.g., the application 310) are executed by the application processor 302.
  • the UE 115 may be configured to operate according to the C-DRX cycle 452 when the enable signal 314 has the first value 316.
  • the UE 115 During operation according to the C-DRX cycle 402, the UE 115 operates in the wake mode 404 for the wake duration 406. Further, during operation according to the C-DRX cycle 402, the UE 115 operates in an extended wake mode 454. In one example, the UE 115 triggers the extended wake mode 454 by providing the command 312 to the modem 338, by sending the one or more signals 350, or both.
  • the modem 338 may be configured to send, at 456, the one or more signals 350 prior to a time associated with expiration of the wake mode 404.
  • the wake duration 406 may correspond to a number W of clock cycles of the UE 115 (where W indicates a positive integer greater than one) .
  • the modem 338 may be configured to send the one or more signals 350 based on the number W of clock cycles, such as by sending the one or more signals 350 prior to the Wth clock signal (e.g., by sending the one or more signals 350 at a (W-1) th clock signal associated with the wake mode 404) .
  • the UE 115 may reset the repeat timer 334 (e.g., at 456 in FIG. 4) .
  • Resetting the repeat timer 334 may include setting the value 336 of the repeat timer 334 to zero or to another value.
  • the UE 115 may operate the repeat timer 334, at 458. For example, the repeat timer 334 may increment (or decrement) the value 336 to count up (or down) to a time at which the sleep mode 408 may be initiated.
  • the modem 338 may be configured to resend, at 460, the one or more signals 350 prior to a time associated with expiration of the repeat timer 334.
  • operation of the repeat timer may associated with a number T of clock cycles of the UE 115 after which the sleep mode 408 may be initiated (where T indicates a positive integer greater than one) .
  • the modem 338 may be configured to send the one or more signals 350 based on the number T of clock cycles, such as by sending the one or more signals 350 prior to the Tth clock signal (e.g., by sending the one or more signals 350 at a (T-1) th clock signal associated with the repeat timer 334) .
  • the UE 115 may reset the repeat timer 334 (e.g., at 460 in FIG. 4) .
  • Resetting the repeat timer 334 may include setting the value 336 of the repeat timer 334 to zero or to another value.
  • the UE 115 may operate the repeat timer 334, at 462. For example, the repeat timer 334 may increment (or decrement) the value 336 to count up (or down) to a time at which the sleep mode 408 may be initiated. Operation may continue similarly for the remainder of the extended wake mode 454 (e.g., until initiation of a wake mode 404 of a subsequent C-DRX cycle) .
  • FIG. 4 illustrates two transmissions of the one or more signals 350
  • the UE 115 may perform a different number of transmissions of the one or more signals 350 (e.g., one transmission, three transmissions, or a different number of transmissions) .
  • the number of transmissions of the one or more signals 350 may depend on the wake duration 406 of the wake mode 404, the sleep duration 410 of the sleep mode 408, or both.
  • the base station 105 may dynamically set one or more of the wake duration 406 of the wake mode 404 or the sleep duration 410 of the sleep mode 408 (e.g., based on the C-DRX schedule 372) , such as by sending a C-DRX configuration message to the UE 115.
  • the number of transmissions of the one or more signals 350 during the C-DRX cycle 452 may be determined based at least in part by the base station 105. In other examples, the number of transmissions of the one or more signals 350 during the C-DRX cycle 452 may be determined by the UE 115.
  • the timing diagram 400 of FIG. 4 illustrates that a sleep mode of a C-DRX cycle can be selectively avoided. As a result, latency of data transfer may be reduced for a mobile device.
  • a particular example of a method of wireless communication is depicted and generally designated 500. Operations of the method 500 may be performed by a mobile device, such as by the UE 115.
  • the method 500 includes operating a UE in a 5G NR stand-alone (SA) connected mode, at 502.
  • the UE 115 may receive (or be available to receive) radio resource control (RRC) messages from the base station 105 during the 5G NR SA connected mode.
  • RRC radio resource control
  • the method 500 further includes determining whether C-DRX is configured for the UE, at 504.
  • the UE 115 may be configured to determine whether C-DRX is configured for the UE based on whether a C-DRX configuration message is received from the base station 105.
  • the method 500 may continue, at 502.
  • the method 500 further includes determining whether a low latency mode enable event is detected by a modem, at 506.
  • the modem 338 may determine whether the enable signal 314 has the first value 316 or the second value 318.
  • the modem 338 may detect the low latency mode enable event in response to detecting the first value 316 of the enable signal 314.
  • the method 500 further includes sending small uplink dummy data from a UE layer2 to avoid UE entering a C-DRX sleep mode, at 508.
  • the UE 115 may send the dummy data 352 to avoid initiation of the sleep mode 408.
  • the dummy data 352 may be associated with a UE layer2, which may correspond to the data link layer 354.
  • the method 500 further includes determining whether a low latency mode disable event is detected by the modem, at 510.
  • the modem 338 may determine whether the enable signal 314 has the first value 316 or the second value 318.
  • the modem 338 may detect the low latency mode disable event in response to detecting the second value 318 of the enable signal 314. If the low latency mode disable event is not detected, the method 500 may continue, at 508 (e.g.., by continuing to send a small amount of dummy data) .
  • the method 500 further includes terminating sending of uplink dummy data from the UE layer2, at 512.
  • the modem 338 may terminate sending the dummy data 352 in response to detecting the second value 318 of the enable signal 314.
  • the method 500 of FIG. 5 illustrates that a sleep mode of a C-DRX cycle can be selectively avoided. As a result, latency of data transfer may be reduced for a mobile device.
  • FIG. 6 is a block diagram illustrating example blocks executed to implement one aspect of the present disclosure. The example blocks will also be described with respect to UE 115 as illustrated in FIG. 7.
  • FIG. 7 is a block diagram illustrating UE 115 configured according to one aspect of the present disclosure.
  • UE 115 includes the structure, hardware, and components as illustrated for UE 115 of FIG. 2.
  • controller/processor 280 which operates to execute logic or computer instructions stored in memory 282, as well as controlling the components of UE 115 that provide the features and functionality of UE 115.
  • UE 115 under control of controller/processor 280, transmits and receives signals via wireless radios 700a-r and antennas 252a-r.
  • Wireless radios 700a-r includes various components and hardware, as illustrated in FIG. 2 for UE 115, including modulator/demodulators 254a-r, MIMO detector 256, receive processor 258, transmit processor 264, and TX MIMO processor 266.
  • the memory 282 stores instructions of the latency condition detector 306, instructions of the idle detector 308, and the list 322.
  • the memory 282 may also store instructions of the repeat timer 334, which may correspond to a software timer in the example of FIG. 7.
  • the repeat timer 334 may include a hardware timer circuit.
  • the memory may also store C-DRX configuration parameters 706 (e.g., parameters received from the base station 105 in a C-DRX configuration message) and signal generator instructions 708, which may be executable to generate the one or more signals 350 in some examples.
  • an example of a method of wireless communication is depicted and generally designated 600. Operations of the method 600 may be performed by a mobile device, such as the UE 115.
  • the method 600 includes executing, by a mobile device, an application associated with communication of data between the mobile device and a network device, at 602.
  • the UE 115 may execute the application 310 to communicate data with the base station 105.
  • the method 600 further includes detecting, by the mobile device, that the application is associated with a latency condition, at 604. For example, the UE 115 may access the list 332 to determine that the application 310 is associated with the latency condition.
  • the method 600 further includes, in response to detecting that the application is associated with the latency condition, providing, to a modem of the mobile device, a command to cause the modem to send one or more signals to maintain a wake mode of the mobile device, at 606.
  • the application processor 302 may provide the command 312 to the modem 338, and the modem 338 may send the one or more signals 350, maintaining a wake mode of the UE 115.
  • an apparatus e.g., the UE 115
  • the UE 115 is configured for wireless communication and includes means (e.g., the memory 330) for storing an application (e.g., the application 310) associated with communication of data between a mobile device (e.g., the UE 115) and a network device (e.g., the base station 105) .
  • an application e.g., the application 310 associated with communication of data between a mobile device (e.g., the UE 115) and a network device (e.g., the base station 105) .
  • the apparatus further includes means (e.g., the application processor 302) for executing the application, for detecting that the application is associated with a latency condition, and for providing, in response to detecting that the application is associated with the latency condition, a command (e.g., the command 312) to cause means for sending (e.g., the modem 338) to send one or more signals (e.g., the one or more signals 350) to enable a wake mode of the mobile device.
  • the apparatus may further include means (e.g., the repeat timer 334) for storing a value (e.g., the value 336) indicating an amount of time until the initiation of the sleep mode.
  • the functional blocks and modules described herein may comprise processors, electronics devices, hardware devices, electronics components, logical circuits, memories, software codes, firmware codes, etc., or any combination thereof.
  • certain features discussed herein e.g., the latency condition detector 306, the idle detector 308, and the repeat timer 334) may be implemented via specialized processor circuitry, via executable instructions, and/or combinations thereof.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • a software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium.
  • the storage medium may be integral to the processor.
  • the processor and the storage medium may reside in an ASIC.
  • the ASIC may reside in a user terminal.
  • the processor and the storage medium may reside as discrete components in a user terminal.
  • the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. Computer-readable storage media may be any available media that can be accessed by a general purpose or special purpose computer.
  • such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
  • a connection may be properly termed a computer-readable medium.
  • the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, or digital subscriber line (DSL) , then the coaxial cable, fiber optic cable, twisted pair, or DSL, are included in the definition of medium.
  • DSL digital subscriber line
  • Disk and disc includes compact disc (CD) , laser disc, optical disc, digital versatile disc (DVD) , hard disk, solid state disk, and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
  • the term “and/or, ” when used in a list of two or more items means that any one of the listed items can be employed by itself, or any combination of two or more of the listed items can be employed.
  • the composition can contain A alone; B alone; C alone; A and B in combination; A and C in combination; B and C in combination; or A, B, and C in combination.

Abstract

Dans un exemple, un procédé comprend l'exécution, par un dispositif mobile, d'une application associée à la communication de données entre le dispositif mobile et un dispositif de réseau. Le procédé comprend en outre la détection, par le dispositif mobile, du fait que l'application est associée à une condition de latence. Le procédé comprend en outre, en réponse à la détection du fait que l'application est associée à la condition de latence, la fourniture, à un modem du dispositif mobile, d'une commande pour amener le modem à envoyer un ou plusieurs signaux pour activer un mode de réveil du dispositif mobile. D'autres aspects et caractéristiques sont également revendiqués et décrits.
PCT/CN2020/075239 2020-02-14 2020-02-14 Réduction de latence de transfert de données pour un dispositif mobile WO2021159455A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/CN2020/075239 WO2021159455A1 (fr) 2020-02-14 2020-02-14 Réduction de latence de transfert de données pour un dispositif mobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/075239 WO2021159455A1 (fr) 2020-02-14 2020-02-14 Réduction de latence de transfert de données pour un dispositif mobile

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Citations (2)

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WO2012061771A1 (fr) * 2010-11-05 2012-05-10 Qualcomm Incorporated Contrôle de l'accès d'une application à un réseau
WO2014058416A1 (fr) * 2012-10-09 2014-04-17 Adaptive Spectrum And Signal Alignment, Inc. Procédé et système pour mesurer une latence dans des systèmes de communication

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012061771A1 (fr) * 2010-11-05 2012-05-10 Qualcomm Incorporated Contrôle de l'accès d'une application à un réseau
WO2014058416A1 (fr) * 2012-10-09 2014-04-17 Adaptive Spectrum And Signal Alignment, Inc. Procédé et système pour mesurer une latence dans des systèmes de communication

Non-Patent Citations (1)

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Title
QUALCOMM INCORPORATED: "Triggering Adaptation of UE Power Consumption Characteristics", 3GPP DRAFT; R1-1811283 TRIGGERING MECHANISM FOR ADAPTATION, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Chengdu, China; 20181008 - 20181012, 29 September 2018 (2018-09-29), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051518686 *

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