WO2022056671A1 - Techniques c-drx améliorées d'optimisation de latence et de puissance - Google Patents

Techniques c-drx améliorées d'optimisation de latence et de puissance Download PDF

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Publication number
WO2022056671A1
WO2022056671A1 PCT/CN2020/115301 CN2020115301W WO2022056671A1 WO 2022056671 A1 WO2022056671 A1 WO 2022056671A1 CN 2020115301 W CN2020115301 W CN 2020115301W WO 2022056671 A1 WO2022056671 A1 WO 2022056671A1
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time period
communication
occasion
indication
communication occasion
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PCT/CN2020/115301
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English (en)
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Nan Zhang
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Qualcomm Incorporated
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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
    • 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
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • 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
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
    • H04W52/028—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
    • 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 enhanced C-DRX techniques for latency and power optimization. Certain aspects of the technology discussed below may enable and provide enhanced communication features and techniques for communication systems, including lower power, lower latency, higher reliability, and lower memory usage.
  • 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 may 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 for wireless communication performed by a UE can include receiving an indication of a time period before occurrence of a communication occasion.
  • the time period may be a non-periodic time period.
  • the method can further include entering an idle state while in a connected mode based, at least in part, on the indicated time period.
  • the method can also include performing at least one communication operation during the communication occasion while still in the connected mode based, at least in part, on an expiration of the indicated time period.
  • a UE configured for wireless communication.
  • the UE can include means for receiving an indication of a time period before occurrence of a communication occasion.
  • the time period may be a non-periodic time period.
  • the UE can also include means for entering an idle state while in a connected mode based, at least in part, on the indicated time period.
  • the UE can further include means for performing at least one communication operation during the communication occasion while still in the connected mode based, at least in part, on an expiration of the indicated time period.
  • a non-transitory computer-readable medium having program code recorded thereon is provided.
  • the program code can include program code executable by a computer for causing the computer to receive an indication of a time period before occurrence of a communication occasion.
  • the time period may be a non-periodic time period.
  • the program code can also include program code executable by the computer for causing the computer to enter an idle state while in a connected mode based, at least in part, on the indicated time period.
  • the program code can further include program code executable by the computer for causing the computer perform at least one communication operation during the communication occasion while still in the connected mode based, at least in part, on an expiration of the indicated time period.
  • a UE may include at least one processor.
  • the UE may also include at least one memory communicatively coupled with the at least one processor and storing processor-readable code that, when executed by the at least one processor, is configured to receive an indication of a time period before occurrence of a communication occasion.
  • the time period may be a non-periodic time period.
  • the at least one memory may further store processor-readable code that, when executed by the at least one processor, is configured to enter an idle state while in a connected mode based, at least in part, on the indicated time period.
  • the at least one memory may further store processor-readable code that, when executed by the at least one processor, is configured to perform at least one communication operation during the communication occasion while still in the connected mode based, at least in part, on an expiration of the indicated time period.
  • a method for wireless communication performed by a base station can include transmitting an indication of a time period before occurrence of a communication occasion.
  • the time period may be a non-periodic time period.
  • the method can also include performing at least one communication operation during the communication occasion based, at least in part, on an expiration of the indicated time period.
  • a base station configured for wireless communication.
  • the base station can include means for transmitting an indication of a time period before occurrence of a communication occasion.
  • the time period may be a non-periodic time period.
  • the base station can also include means for performing at least one communication operation during the communication occasion based, at least in part, on an expiration of the indicated time period.
  • a non-transitory computer-readable medium having program code recorded thereon is provided.
  • the program code can include program code executable by a computer for causing the computer to transmit an indication of a time period before occurrence of a communication occasion.
  • the time period may be a non-periodic time period.
  • the program code can also include program code executable by the computer for causing the computer to perform at least one communication operation during the communication occasion based, at least in part, on an expiration of the indicated time period.
  • a base station may include at least one processor.
  • the base station may also include at least one memory communicatively coupled with the at least one processor and storing processor-readable code that, when executed by the at least one processor, is configured to transmit an indication of a time period before occurrence of a communication occasion.
  • the time period may be a non-periodic time period.
  • the at least one memory may further store processor-readable code that, when executed by the at least one processor, is configured to perform at least one communication operation during the communication occasion based, at least in part, on an expiration of the indicated time period.
  • FIG. 1 is a block diagram illustrating details of a wireless communication system 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 configured according to some aspects.
  • FIG. 3 is a block diagram illustrating a method for enhanced C-DRX for latency and power optimization according to some aspects of the present disclosure.
  • FIG. 4 is another block diagram illustrating another method for enhanced C-DRX for latency and power optimization according to some aspects of the present disclosure.
  • FIG. 5 is a block diagram conceptually illustrating a design of a connected-mode UE configured according to some aspects of the present disclosure.
  • FIG. 6 is a block diagram conceptually illustrating a design of a base station (e.g., a gNB) configured according to some aspects of the present disclosure.
  • a base station e.g., a gNB
  • This disclosure relates generally to providing or participating in authorized shared access 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 Global System for Mobile Communication (GSM) .
  • GSM Global System for Mobile Communication
  • 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. Additionally, 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) .
  • the 3GPP is a collaboration between groups of telecommunications associations that aims to define a globally applicable third generation (3G) mobile phone specification.
  • 3GPP long term evolution (LTE) is a 3GPP project which was aimed at improving the universal mobile telecommunications system (UMTS) mobile phone standard.
  • the 3GPP may define specifications for the next generation of mobile networks, mobile systems, and mobile devices.
  • LTE long term evolution
  • UMTS universal mobile telecommunications system
  • the present disclosure may describe certain aspects with reference to LTE, 4G, or 5G NR technologies; however, the description is not intended to be limited to a specific technology or application, and one or more aspects described with reference to one technology may be understood to be applicable to another technology. Indeed, one or more aspects of the present disclosure are related to shared access to wireless spectrum between networks using 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 millisecond (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.
  • 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 a person having ordinary 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 is a block diagram illustrating details of an example wireless communication system.
  • the wireless communication system may include wireless network 100.
  • Wireless network 100 may, for example, include 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” may 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 include a plurality of operator wireless networks) .
  • base station 105 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 3GPP, such apparatus may additionally or otherwise be referred to by those skilled in the art as a mobile station (MS) , a 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, a gaming device, an augmented reality device, vehicular component device/module, or some other suitable terminology.
  • 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 include implementations 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 include implementations 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.; and digital home or smart home devices such as a home audio, video, and multimedia device, an appliance, a sensor, a vending machine, intelligent lighting, a home security system, a smart meter, 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.
  • UEs 115a-115d of the implementation illustrated in FIG. 1 are examples of mobile smart phone-type devices accessing wireless network 100
  • 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 communication link (represented as a lightning bolt) indicates wireless transmissions between a UE and 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.
  • UEs may operate as base stations or other network nodes in some scenarios.
  • 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 implementations 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 conceptually illustrating an example 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.
  • transmit processor 220 may receive data from data source 212 and control information from 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.
  • transmit processor 220 may process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively.
  • 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.
  • MIMO multiple-input multiple-output
  • MIMO multiple-input multiple-output
  • MIMO 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 antennas 234a through 234t, respectively.
  • the antennas 252a through 252r may receive the downlink signals from base station 105 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 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 UE 115 to data sink 260, and provide decoded control information to controller/processor 280.
  • transmit processor 264 may receive and process data (e.g., for the physical uplink shared channel (PUSCH) ) from data source 262 and control information (e.g., for the physical uplink control channel (PUCCH) ) from controller/processor 280. Additionally, transmit processor 264 may also generate reference symbols for a reference signal. The symbols from transmit processor 264 may be precoded by TX MIMO processor 266 if applicable, further processed by modulators 254a through 254r (e.g., for SC-FDM, etc. ) , and transmitted to base station 105.
  • data e.g., for the physical uplink shared channel (PUSCH)
  • control information e.g., for the physical uplink control channel (PUCCH)
  • controller/processor 280 e.g., for the physical uplink control channel (PUCCH)
  • transmit processor 264 may also generate reference symbols for a reference signal.
  • the symbols from transmit processor 264 may be precoded by TX MIMO processor 266 if applicable,
  • 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.
  • Receive 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 280 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. 3 and 4, 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. In an unlicensed frequency portion of the shared radio frequency spectrum band, UEs 115 or base stations 105 may traditionally perform a medium-sensing procedure to contend for access to the frequency spectrum. For example, UE 115 or base station 105 may perform a listen-before-talk or listen-before-transmitting (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 or listen-before-transmitting
  • 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
  • a UE such as a UE 115, may be in a connected mode.
  • a UE in a connected mode may refer to a UE that has a connection with a gNB, such as a base station 105.
  • the connection between the UE and the base station may be used by the UE to transmit and/or receive information to/from the base station, and may be used by the base station to transmit and/or receive information to/from the UE.
  • the UE may enter an “idle” state (also referred to as an “inactive” or “sleep” state) during which it may not perform wireless communication with the connected base station.
  • a connected-mode UE may exit the idle state and wake up to perform wireless communication with the connected base station or to determine whether the UE should go back to sleep or stay awake to perform additional wireless communication with the base station. For example, the UE may decide to stay awake to transmit and/or receive information to/from the base station.
  • the foregoing operations may be performed by a connected-mode UE as part of a connected mode discontinuous reception (C-DRX) scheme.
  • a C-DRX scheme may specify how long a UE should remain idle while in a connected mode and how long the UE should remain awake while in the connected mode to perform wireless communication.
  • a connected-mode UE may be configured with a periodic C-DRX scheme.
  • a periodic C-DRX scheme may refer to one where the UE’s connected-mode sleep and awake times are repeated in a periodic manner.
  • a periodic C-DRX scheme may be one where the connected-mode UE is configured to sleep for fifty minutes, then wake up for five minutes, then sleep for fifty minutes again, then wake up for five minutes again, and so on, repeating the periodic fifty-minute sleep and five-minute awake pattern multiple times until the connected-mode UE is instructed to stay awake for a longer period of time or not go back to sleep.
  • configuring a connected-mode UE with a periodic C-DRX scheme may yield unfavorable operations in some instances and/or less-than-optimal characteristics associated with the C-DRX scheme, such as more power consumption, longer latency, or less reliability.
  • FIG. 3 shows a block diagram illustrating a method for enhanced C-DRX for latency and power optimization according to some aspects of the present disclosure.
  • Aspects of method 300 may be implemented with various other aspects of this disclosure described with respect to FIGS. 1-2 and 5, such as a mobile device/UE.
  • controller/processor 280 of UE 115 may control UE 115 to perform method 300.
  • FIG. 3 illustrates a method 300 that may be performed by a wireless communication device, such as a UE 115.
  • a UE such as UE 115
  • the connected-mode UE may receive from a base station, such as base station 105, an indication of a time period.
  • the connected-mode UE may receive a first message from a base station.
  • the first message may include a first indication of a first time period, such as the indicated time period shown at block 302.
  • the first message may also include a second indication of a second time period.
  • the connected-mode UE may also receive the second indication of the second time period by receiving the first message that includes both the first indication of the first time period and the second indication of the time period.
  • each time period indication included in the first message may provide a different indication for how long a connected-mode UE should remain in an idle state while in the connected-mode before waking up for a particular communication occasion.
  • the first time period indicated in the first message may indicate a first time period before the occurrence of a first communication occasion, such as the communication occasion shown at block 302.
  • the first time period may provide an indication of a first amount of time that the connected-mode UE should remain in an idle state while in the connected mode before waking up for the first communication occasion.
  • an idle state of a connected-mode UE may refer to a state of a connected-mode UE in which the connected-mode UE may not actively transmit or receive information from a base station.
  • a communication occasion may refer to one or more time period occasions during which a UE may be awake to perform wireless communication, such as to transmit information to a base station or receive information from the base station.
  • the second time period indicated in the first message may indicate a second time period before the occurrence of a second communication occasion.
  • the second time period may provide an indication of a second amount of time that the connected-mode UE should remain in an idle state while in the connected mode before waking up for the second communication occasion.
  • the second time period may refer to a time period that occurs after the first communication occasion has occurred.
  • the second communication occasion may refer to a communication occasion that occurs after the first communication occasion has already occurred.
  • the first time period may be a non-periodic time period.
  • the first time period may refer to a time period that is not repeated after the first communication occasion has occurred.
  • the second time period may also be a non-periodic time period.
  • the second time period that occurs after the first communication occasion has occurred may refer to a time period that is not the same as the first time period that occurs before the first communication occasion has occurred.
  • the first time period and the second time period may be non-periodic such that the second time period may not be equal to the first time period.
  • the connected-mode UE may enter an idle state while in a connected-mode based, at least in part, on the indicated first time period, such as the indicated time period shown at block 302.
  • the connected-mode UE may receive the first message before the connected-mode UE enters the connected-mode idle state associated with the indicated first time period.
  • the connected-mode UE may enter the idle state while in the connected mode based, at least in part, on the first time period indicated in the first message.
  • the UE may enter a first connected-mode idle state whereby the connected-mode UE remains in the idle state for the amount of time indicated by the first time period.
  • the connected-mode UE may perform at least one communication operation during the first communication occasion while still in the connected mode based, at least in part, on an expiration of the indicated first time period, such as the indicated time period shown at block 302.
  • the communication operations shown at block 306 may occur after the connected-mode UE has exited the first idle state and has woken up to perform wireless communication during the first communication occasion.
  • the connected-mode UE may exit the first idle state and perform wireless communication with a base station during the communication occasion.
  • a communication operation such as the at least one communication operation shown to be performed at block 306, may refer to at least one of transmission of information or reception of information.
  • the connected-mode UE may enter a second idle state while still in the connected mode. For example, after the first communication occasion has occurred, the connected-mode UE may go back to sleep as it enters a second connected-mode idle state.
  • the second idle state may be based, at least in part, on the second time period indicated in the first message. For example, the connected-mode UE may enter a second idle state whereby the connected-mode UE remains in the idle state for the amount of time indicated by the second time period.
  • the connected-mode UE may again perform at least one communication operation during the second communication occasion while still in the connected mode based, at least in part, on an expiration of the indicated second time period.
  • the second performance of at least one communication operation may occur after the connected-mode UE has exited the second idle state and has woken up to perform at least one communication operation.
  • the connected-mode UE may exit the second idle state and perform at least one communication operation during the second communication occasion while still in the connected mode.
  • a connected-mode UE may receive a first message that includes a first time period indication of 120 minutes and a second time period indication of 200 minutes. After receiving the message, the connected-mode UE may enter a first idle state that lasts 120 minutes. After the 120 minutes have expired, the connected-mode UE may wake up to perform at least one communication operation during a first communication occasion while still in the connected mode. Afterwards, the connected-mode UE may enter a second idle state that lasts 200 minutes. After the 200 minutes have expired, the connected-mode UE may wake up to perform at least one communication operation during a second communication occasion while still in the connected mode.
  • the first message may include more than two indications.
  • the first message can also include additional indications, such as another time period indication.
  • the additional time period indicated in the first message may indicate a third time period before the occurrence of a third communication occasion.
  • the additional time period may provide an indication of another amount of time that the connected-mode UE should remain in an idle state before waking up for the third communication occasion.
  • the additional time period indication may refer to a time period that occurs after the second communication occasion has occurred.
  • the third communication occasion may refer to a communication occasion that occurs after the second communication occasion has already occurred.
  • the first message can also include an additional time period indication of 210 minutes.
  • the connected-mode UE may enter the third idle state that lasts 210 minutes. After the 210 minutes have expired, the UE may wake up to perform at least one communication operation during a third communication occasion while still in the connected mode.
  • a base station may modify or update the C-DRX time periods being followed by a connected-mode UE. According to some aspects, the base station may perform the modification or update at any time that the connected-mode UE is awake and receiving messages from the base station. For example, in some aspects, the connected-mode UE may receive from the base station a second message. In some aspects, the second message may be different than the first message received by the connected-mode UE. For example, according to some aspects, the second message may be received by the connected-mode UE during the first communication occasion. According to some aspects, the second message received during the first communication occasion may include a third time period indication. In some aspects, the third time period indicated in the second message may indicate a third time period before the occurrence of the second communication occasion.
  • the third time period may provide an indication of a third amount of time that the connected-mode UE should remain in an idle state before waking up for the second communication occasion.
  • the third time period may refer to a time period that occurs after the first communication occasion has occurred.
  • the third time period may also be a non-periodic time period.
  • the third time period that occurs after the first communication occasion has occurred may refer to a time period that is not the same as the first time period that occurs before the first communication occasion has occurred.
  • the first time period and the third time period may be non-periodic such that the third time period may not be equal to the first time period.
  • the third time period received in the second message during the first communication occasion may modify the amount of the time the connected-mode UE will remain in the idle state after the first communication occasion has occurred and before waking up for the second communication occasion. For example, as mentioned above, based on the first message, after the first communication occasion has occurred, the connected-mode UE may go back to sleep as it enters a second idle state, while still in the connected mode, that may be based, at least in part, on the second time period indicated in the first message. However, after receiving the second message during the first communication occasion, the second idle state that the connected-mode UE enters, such as the idle state entered after the first communication occasion has occurred and before the second communication occasion has occurred, may be based, at least in part, on the third time period.
  • the connected-mode UE may still enter the second idle state. In other words, after the first communication occasion has occurred, the connected-mode UE may go back to sleep as it enters the second idle state.
  • the second idle state may be based, at least in part, on the third time period indicated in the second message. For example, the connected-mode UE may enter a second idle state whereby the connected-mode UE remains in the idle state for the amount of time indicated by the third time period.
  • the UE may again perform at least one communication operation during the second communication occasion while still in the connected mode based, at least in part, on an expiration of the indicated third time period.
  • the second performance of at least one communication operation may occur after the UE has exited the second idle state and has woken up during the second communication occasion.
  • the connected-mode UE may exit the second idle state and perform at least one communication operation during the second communication occasion.
  • the second message can include a third time period indication of 150 minutes.
  • the connected-mode UE may wake up during the first communication occasion.
  • the connected-mode UE may receive the second message that includes the third time period indication. Therefore, after the first communication occasion has occurred, the connected-mode UE may enter a second idle state that lasts 150 minutes based on the third time period indication instead of the original second time period indication of 200 minutes.
  • the second idle time has been modified by replacing the original second time period received in the first message with the third time period received in the second message during the first communication occasion. Therefore, after the 150 minutes have expired, the UE may wake up during the second communication occasion.
  • a message received by the connected-mode UE may include more than one non-periodic C-DRX idle time period indications.
  • a message received by the connected-mode UE may include only a single non-periodic C-DRX idle time period indication.
  • a connected-mode UE may use a default C-DRX periodic idle time period for a C-DRX cycle when the connected-mode UE does not receive a message, such as the first message and/or the second message described herein, that includes at least one non-periodic C-DRX idle time period indication.
  • the connected-mode UE may prioritize the received non-periodic C-DRX idle time period indication for a C-DRX cycle over a default C-DRX periodic idle time period.
  • FIG. 4 shows another block diagram illustrating another method for enhanced C-DRX for latency and power optimization according to some aspects of the present disclosure.
  • controller/processor 240 of base station 105 may control base station 105 to perform method 400.
  • a base station such as base station 105, may transmit an indication of a time period before occurrence of a communication occasion. In some aspects, the time period may be a non-periodic time period.
  • a base station may perform at least one communication operation during the communication occasion based, at least in part, on an expiration of the indicated time period.
  • the base station may transmit or receive information during the communication occasion after the indicated first time period has expired and the connected-mode UE is awake and performing wireless communication with the base station.
  • the base station may also perform at least one communication operation during the second communication occasion based, at least in part, on an expiration of the indicated second time period.
  • the base station may transmit or receive information during the second communication occasion after the indicated second time period has expired and the connected-mode UE is awake and performing wireless communication with the base station.
  • the base station may perform at least one communication operation during the second communication occasion based, at least in part, on an expiration of the indicated third time period.
  • the base station may transmit or receive information during the second communication occasion after the indicated third time period has expired and the connected-mode UE is awake and performing wireless communication with the base station.
  • FIG. 5 shows a block diagram conceptually illustrating a design of a connected-mode UE configured according to some aspects of the present disclosure.
  • UE 115 may be configured to perform operations, including the blocks of the method 300 described with reference to FIG. 3.
  • the UE 115 includes the structure, hardware, and components shown and described with reference to the UE 115 of FIGS. 1 or 2.
  • the UE 115 includes the controller 280, which operates to execute logic or computer instructions illustrated in communication manager 510, as well as controlling the components of the UE 115 that provide the features and functionality of the UE 115.
  • the UE 115 under control of the controller 280, transmits and receives signals via wireless radios 501a-r and the antennas 252a-r.
  • the wireless radios 501a-r include various components and hardware, as illustrated in FIG. 2 for the UE 115, including the modulator and demodulators 254a-r, the MIMO detector 256, the receive processor 258, the transmit processor 264, and the TX MIMO processor 266.
  • Communication manager 510 may include Receive Logic 502, State Logic 503, and Communication Logic 504. Portions of one or more of the components 502, 503, and 504 may be implemented at least in part in hardware or software. In some implementations, at least one of the components 502, 503, and 504 is implemented at least in part as software stored in a memory (such as memory 282) . For example, portions of one or more of the components 502, 503, and 504 can be implemented as non-transitory instructions or code executable by a processor (such as the controller 280) to perform the functions or operations of the respective component.
  • a processor such as the controller 280
  • One or more of the components 502, 503, and 504 illustrated in communication manager 510 may configure processor/controller 280 to carry out one or more procedures relating to wireless communication by the UE 115, as previously described.
  • Receive Logic 502 may configure controller/processor 280 to carry out operations that include receiving an indication of a time period before occurrence of a communication occasion, wherein the time period is a non-periodic time period, in any manner previously described, such as with reference to block 302 (see FIG. 3) .
  • State Logic 503 may configure controller/processor 280 to carry out operations that include entering an idle state while in a connected mode based, at least in part, on the indicated time period, in any manner previously described, such as with reference to block 304 (see FIG.
  • Communication Logic 504 may configure controller/processor 280 to carry out operations that include performing at least one communication operation during the communication occasion while still in the connected mode based, at least in part, on an expiration of the indicated time period, in any manner previously described, such as with reference to block 306 (see FIG. 3) .
  • the UE 115 may receive signals from or transmit signals to one or more network entities, such as the base station 105 of FIGS. 1-2 or a base station as illustrated in FIG. 6.
  • FIG. 6 shows a block diagram conceptually illustrating a design of a base station (e.g., a gNB) configured according to some aspects of the present disclosure.
  • the base station 105 may be configured to perform operations, including the blocks of the method 400 described with reference to FIG. 4.
  • the base station 105 includes the structure, hardware, and components shown and described with reference to the base station 105 of FIGS. 1-2.
  • the base station 105 may include the controller 240, which operates to execute logic or computer instructions illustrated in communication manager 610, as well as controlling the components of the base station 105 that provide the features and functionality of the base station 105.
  • the base station 105 under control of the controller 240, transmits and receives signals via wireless radios 601a-t and the antennas 234a-t.
  • the wireless radios 601a-t include various components and hardware, as illustrated in FIG. 2 for the base station 105, including the modulator and demodulators 232a-t, the transmit processor 220, the TX MIMO processor 230, the MIMO detector 236, and the receive processor 238.
  • Communication manager 610 may include Transmission Logic 602 and Communication Logic 604. Portions of one or more of component 602 and 604 may be implemented at least in part in hardware or software. In some implementations, at least one of components 602 and 604 is implemented at least in part as software stored in a memory (such as memory 242) . For example, portions of one or more of components 602 and 604 can be implemented as non-transitory instructions or code executable by a processor (such as the controller 240) to perform the functions or operations of the respective component.
  • a processor such as the controller 240
  • One or more of components 602 and 604 illustrated in communication manager 610 may configure processor/controller 280 to carry out one or more procedures relating to wireless communication by the base station 105, as previously described.
  • Transmission Logic 602 may configure controller/processor 280 to carry out operations that include transmitting an indication of a time period before occurrence of a communication occasion, wherein the time period is a non-periodic time period, in any manner previously described, such as with reference to block 402 (see FIG. 4) .
  • Communication Logic 604 may configure controller/processor 280 to carry out operations that include performing at least one communication operation during the communication occasion based, at least in part, on an expiration of the indicated time period, in any manner previously described, such as with reference to block 404 (see FIG. 4) .
  • the base station 105 may receive signals from or transmit signals to one or more UEs, such as the UE 115 of FIGS. 1-2 or the UE 115 of FIG. 5.
  • one or more blocks (or operations) described with reference to FIGS. 3 and 4 may be combined with one or more blocks (or operations) described with reference to another of the figures.
  • one or more blocks (or operations) of FIG. 3 may be combined with one or more blocks (or operations) of FIG. 4.
  • one or more blocks associated with FIGS. 5 or 6 may be combined with one or more blocks (or operations) associated with FIGS. 1 or 2.
  • enhanced C-DRX techniques for latency and power optimization may include a UE receiving an indication of a time period before occurrence of a communication occasion.
  • the time period may be a non-periodic time period.
  • Enhanced C-DRX techniques for latency and power optimization may also include a UE entering an idle state while in a connected mode based, at least in part, on the indicated time period.
  • Enhanced C-DRX techniques for latency and power optimization may further include a UE performing at least one communication operation during the communication occasion while still in the connected mode based, at least in part, on an expiration of the indicated time period.
  • Enhanced C-DRX techniques for latency and power optimization may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.
  • the UE may receive a second indication of a second time period before occurrence of a second communication occasion that is to occur after the communication occasion has occurred.
  • the time period and the second time period may be non-periodic such that the second time period is not equal to the time period.
  • the UE may receive, before entering the connected-mode idle state, a first message that includes both the indication and the second indication.
  • the UE may enter, after the communication occasion has occurred, a second idle state while still in the connected mode based, at least in part, on the indicated second time period.
  • the UE may perform at least one communication operation during the second communication occasion while still in the connected mode based, at least in part, on an expiration of the indicated second time period.
  • the UE may receive a third indication of a third time period before occurrence of the second communication occasion that is to occur after the communication occasion has occurred.
  • the time period and the third time period may be non-periodic such that the third time period is not equal to the time period.
  • the UE may enter, after the communication occasion has occurred, a second idle state while still in the connected mode based, at least in part, on the indicated third time period.
  • the UE may perform at least one communication operation during the second communication occasion while still in the connected mode based, at least in part, on an expiration of the indicated third time period.
  • the UE may receive a second message that includes the third indication.
  • the second message may be received during the communication occasion.
  • enhanced C-DRX techniques for latency and power optimization may include a base station transmitting an indication of a time period before occurrence of a communication occasion.
  • the time period may be a non-periodic time period.
  • Enhanced C-DRX techniques for latency and power optimization may further include a base station performing at least one communication operation during the communication occasion based, at least in part, on an expiration of the indicated time period.
  • the base station may transmit a second indication of a second time period before occurrence of a second communication occasion that is to occur after the communication occasion has occurred.
  • the time period and the second time period may be non-periodic such that the second time period is not equal to the time period.
  • a base station may transmit, before the communication occasion, a first message that includes both the indication and the second indication.
  • a base station may perform at least one communication operation during the second communication occasion based, at least in part, on an expiration of the indicated second time period.
  • a base station may transmit a third indication of a third time period before occurrence of the second communication occasion that is to occur after the communication occasion has occurred.
  • the time period and the third time period may be non-periodic such that the third time period is not equal to the time period.
  • a base station may perform at least one communication operation during the second communication occasion based, at least in part, on an expiration of the indicated third time period.
  • a base station may transmit a second message that includes the third indication.
  • the second message may be transmitted during the communication occasion.
  • Components, 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.
  • features discussed herein 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 may 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 may be accessed by a general purpose or special purpose computer.
  • such computer-readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may 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 may be employed by itself, or any combination of two or more of the listed items may be employed.
  • the composition may 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.

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Abstract

L'invention divulgue des techniques de communication sans fil qui incluent des techniques C-DRX améliorées d'optimisation de latence et de puissance. Un UE peut recevoir, d'une station de base, une indication d'une période de temps qui précède l'occurrence d'une occasion de communication. La période de temps peut être une période de temps non périodique. L'UE peut également entrer dans un état de repos tandis qu'il est dans un mode connecté, sur la base, au moins en partie, de la période de temps indiquée. L'UE peut en outre effectuer au moins une opération de communication pendant l'occasion de communication tout en restant dans le mode connecté sur la base, au moins en partie, d'une expiration de la période de temps indiquée. La station de base peut effectuer au moins une opération de communication pendant l'occasion de communication, sur la base, au moins en partie, d'une expiration de la période de temps indiquée. D'autres aspects et caractéristiques sont également revendiqués et décrits.
PCT/CN2020/115301 2020-09-15 2020-09-15 Techniques c-drx améliorées d'optimisation de latence et de puissance WO2022056671A1 (fr)

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