WO2022077416A1 - Amélioration de latence de réception discontinue de dispositif à dispositif - Google Patents

Amélioration de latence de réception discontinue de dispositif à dispositif Download PDF

Info

Publication number
WO2022077416A1
WO2022077416A1 PCT/CN2020/121396 CN2020121396W WO2022077416A1 WO 2022077416 A1 WO2022077416 A1 WO 2022077416A1 CN 2020121396 W CN2020121396 W CN 2020121396W WO 2022077416 A1 WO2022077416 A1 WO 2022077416A1
Authority
WO
WIPO (PCT)
Prior art keywords
discontinuous reception
paging cycle
offset value
temporal offset
wake
Prior art date
Application number
PCT/CN2020/121396
Other languages
English (en)
Inventor
Nan Zhang
Wenkai YAO
Yongjun XU
Original Assignee
Qualcomm Incorporated
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to PCT/CN2020/121396 priority Critical patent/WO2022077416A1/fr
Publication of WO2022077416A1 publication Critical patent/WO2022077416A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/005—Transmission of information for alerting of incoming communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • 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

  • the following relates to wireless communications, including device-to-device discontinuous reception (DRX) latency enhancement.
  • DRX discontinuous reception
  • Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) .
  • Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems.
  • 4G systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems
  • 5G systems which may be referred to as New Radio (NR) systems.
  • a wireless multiple-access communications system may include one or more base stations or one or more network access nodes, each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UE) .
  • UE user equipment
  • UEs may communicate with other UEs in a discontinuous reception (DRX) operation mode. Based on the DRX mode, a UE may transmit a wake-up signal to another UE before transmitting data. When the other UE detects the wake-up signal, the other UE may wake up to receive a data transmission from the UE.
  • DRX discontinuous reception
  • a method of wireless communications at a first UE is described.
  • the method may include receiving, from a second UE, configuration signaling for sidelink communications with the second UE, the configuration signaling indicating a discontinuous reception paging cycle for a wake-up signal and a temporal offset value, monitoring for the wake-up signal from the second UE based on the discontinuous reception paging cycle, and monitoring a paging occasion for a set of data packets transmitted from the second UE based on the discontinuous reception paging cycle and the temporal offset value.
  • the apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory.
  • the instructions may be executable by the processor to cause the apparatus to receive, from a second UE, configuration signaling for sidelink communications with the second UE, the configuration signaling indicating a discontinuous reception paging cycle for a wake-up signal and a temporal offset value, monitor for the wake-up signal from the second UE based on the discontinuous reception paging cycle, and monitor a paging occasion for a set of data packets transmitted from the second UE based on the discontinuous reception paging cycle and the temporal offset value.
  • the apparatus may include means for receiving, from a second UE, configuration signaling for sidelink communications with the second UE, the configuration signaling indicating a discontinuous reception paging cycle for a wake-up signal and a temporal offset value, monitoring for the wake-up signal from the second UE based on the discontinuous reception paging cycle, and monitoring a paging occasion for a set of data packets transmitted from the second UE based on the discontinuous reception paging cycle and the temporal offset value.
  • a non-transitory computer-readable medium storing code for wireless communications at a first UE is described.
  • the code may include instructions executable by a processor to receive, from a second UE, configuration signaling for sidelink communications with the second UE, the configuration signaling indicating a discontinuous reception paging cycle for a wake-up signal and a temporal offset value, monitor for the wake-up signal from the second UE based on the discontinuous reception paging cycle, and monitor a paging occasion for a set of data packets transmitted from the second UE based on the discontinuous reception paging cycle and the temporal offset value.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, from the second UE, second configuration signaling associated with modifying the discontinuous reception paging cycle, the temporal offset value, or both, where, monitoring for the wake-up signal may be based on the modified discontinuous reception paging cycle, and monitoring the paging occasion for a set of data packets transmitted from the second UE may be based on the modified discontinuous reception paging cycle, the modified temporal offset value, or both.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining a duration may have elapsed without receiving the configuration signaling, identifying a default discontinuous reception paging cycle for the wake-up signal, a default temporal offset value, or both, based on the duration exceeding a threshold, where, monitoring for the wake-up signal may be based on the default discontinuous reception paging cycle, and monitoring the paging occasion for the set of data packets transmitted from the second UE may be based on the default discontinuous reception paging cycle, the default temporal offset value, or both.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for overriding the default discontinuous reception paging cycle for the wake-up signal with the discontinuous reception paging cycle, overriding the default temporal offset value with the temporal offset value, or both, based on receiving the configuration signaling.
  • receiving the configuration signaling may include operations, features, means, or instructions for receiving a radio resource control message or a media access control-control element.
  • a method of wireless communications at a second UE is described.
  • the method may include identifying, at the second UE, a configuration for sidelink communications with a first UE, the configuration including a discontinuous reception paging cycle for a wake-up signal and a temporal offset value, transmitting configuration signaling to the first UE, the configuration signaling including the discontinuous reception paging cycle and the temporal offset value, transmitting the wake-up signal to the first UE based on the discontinuous reception paging cycle, and transmitting a set of data packets to the first UE based on the discontinuous reception paging cycle and the temporal offset value.
  • the apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory.
  • the instructions may be executable by the processor to cause the apparatus to identify, at the second UE, a configuration for sidelink communications with a first UE, the configuration including a discontinuous reception paging cycle for a wake-up signal and a temporal offset value, transmit configuration signaling to the first UE, the configuration signaling including the discontinuous reception paging cycle and the temporal offset value, transmit the wake-up signal to the first UE based on the discontinuous reception paging cycle, and transmit a set of data packets to the first UE based on the discontinuous reception paging cycle and the temporal offset value.
  • the apparatus may include means for identifying, at the second UE, a configuration for sidelink communications with a first UE, the configuration including a discontinuous reception paging cycle for a wake-up signal and a temporal offset value, transmitting configuration signaling to the first UE, the configuration signaling including the discontinuous reception paging cycle and the temporal offset value, transmitting the wake-up signal to the first UE based on the discontinuous reception paging cycle, and transmitting a set of data packets to the first UE based on the discontinuous reception paging cycle and the temporal offset value.
  • a non-transitory computer-readable medium storing code for wireless communications at a second UE is described.
  • the code may include instructions executable by a processor to identify, at the second UE, a configuration for sidelink communications with a first UE, the configuration including a discontinuous reception paging cycle for a wake-up signal and a temporal offset value, transmit configuration signaling to the first UE, the configuration signaling including the discontinuous reception paging cycle and the temporal offset value, transmit the wake-up signal to the first UE based on the discontinuous reception paging cycle, and transmit a set of data packets to the first UE based on the discontinuous reception paging cycle and the temporal offset value.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, to the first UE, second configuration signaling associated with modifying or overriding the discontinuous reception paging cycle, the temporal offset value, or both, where transmitting the wake-up signal, transmitting the set of data packets, or both, may be based on the second configuration signaling.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for identifying a set of conditions associated with modifying or overriding the default discontinuous reception paging cycle, overriding the default temporal offset value, or both, where transmitting the second configuration signaling may be based on the set of conditions being satisfied.
  • transmitting the configuration signaling may include operations, features, means, or instructions for transmitting a radio resource control message or a media access control-control element.
  • FIG. 1 illustrates an example of a system for wireless communications that supports device-to-device discontinuous reception (DRX) latency enhancement in accordance with aspects of the present disclosure.
  • DRX discontinuous reception
  • FIG. 2 illustrates an example of a wireless communications system that supports device-to-device discontinuous reception latency enhancement in accordance with aspects of the present disclosure.
  • FIG. 3 illustrates an example of a process flow that supports device-to-device discontinuous reception latency enhancement in accordance with aspects of the present disclosure.
  • FIGs. 4 and 5 show block diagrams of devices that support device-to-device discontinuous reception latency enhancement in accordance with aspects of the present disclosure.
  • FIG. 6 shows a block diagram of a communications manager that supports device-to-device discontinuous reception latency enhancement in accordance with aspects of the present disclosure.
  • FIG. 7 shows a diagram of a system including a device that supports device-to-device discontinuous reception latency enhancement in accordance with aspects of the present disclosure.
  • FIGs. 8 and 9 show flowcharts illustrating methods that support device-to-device discontinuous reception latency enhancement in accordance with aspects of the present disclosure.
  • Some wireless communication systems may include one or more user equipments (UEs) and one or more base stations, such as next-generation NodeBs or giga-NodeBs (either of which may be referred to as a gNB) that may support one or more multiple radio access technologies (RATs) including 4G systems such as Long Term Evolution (LTE) systems, fifth generation (5G) systems which may be referred to as New Radio (NR) systems, and Wi-Fi systems (e.g., wireless local area network (WLAN) systems) .
  • RATs radio access technologies
  • 4G systems such as Long Term Evolution (LTE) systems
  • 5G systems which may be referred to as New Radio (NR) systems
  • Wi-Fi systems e.g., wireless local area network (WLAN) systems
  • one or more UEs may communicate directly with one another in sidelink communication channels without transmitting through a base station or through a relay point.
  • a sidelink communication may be an example of device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, or another example of sidelink communication in a wireless communications system.
  • UEs may communicate with other UEs in a discontinuous reception (DRX) operation mode, such as a connected mode DRX (C-DRX) .
  • DRX discontinuous reception
  • C-DRX connected mode DRX
  • a first UE may transmit a wake-up signal to the second UE before transmitting data.
  • MTC machine type communications
  • the second UE may remain in a low-power mode, monitoring for the wake-up signal according to a DRX paging cycle.
  • the UE may wake up (e.g., activate additional communications resources, such as antennas) to receive a data transmission from the first UE.
  • the first UE may transmit the wake-up signal using a beam sweeping procedure.
  • communication over a DRX mode may unnecessarily increase power consumption at the UEs, such as at the second UE.
  • enlarging the DRX cycle may increase data latency at the second UE. It may be beneficial to use wake-up signal techniques in sidelink D2D communications to reduce UE power consumption and latency.
  • a DRX paging cycle and a temporal offset value may be configured for sidelink communications between a first UE and a second UE.
  • a first UE may receive, from a second UE, configuration signaling for sidelink communications with the second UE.
  • the configuration signaling may indicate a DRX paging cycle (e.g., for a wake-up signal) and a temporal offset value (e.g., a wake-up signal temporal offset value) .
  • the first UE may monitor for and detect the wake-up signal from the second UE according to the DRX paging cycle.
  • the first UE may monitor a paging occasion for a set of data packets transmitted from the second UE, based on the DRX paging cycle and the temporal offset value.
  • the configuration signaling may be transmitted over an radio resource control message or a media access control-control element.
  • the first UE may further receive, from the second UE, second configuration signaling associated with modifying the DRX paging cycle, the temporal offset value, or both.
  • the first UE may monitor for wake-up signals based on the modified DRX paging cycle.
  • the first UE may monitor paging occasions for data packets transmitted from the second UE based on the modified DRX paging cycle, the modified temporal offset value, or both.
  • the first UE may monitor for wake-up signals and paging occasions according to a default DRX cycle time and default temporal offset value.
  • the first UE may use the default DRX cycle time and default temporal offset value for cases in which the first UE has not received any configuration signaling (e.g., not received a DRX paging cycle or a temporal offset value) from the second UE for a duration exceeding a threshold.
  • the first UE may monitor for wake-up signals and monitor paging occasions for data packets based on the default DRX cycle time and default temporal offset value.
  • the configuration signaling received by the first UE from the second UE may override the default DRX cycle time and default temporal offset value.
  • aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are further illustrated by and described with reference to a process flow, apparatus diagrams, system diagrams, and flowcharts that relate to device-to-device DRX latency enhancement.
  • FIG. 1 illustrates an example of a wireless communications system 100 that supports device-to-device DRX latency enhancement in accordance with aspects of the present disclosure.
  • the wireless communications system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130.
  • the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-A Pro LTE-A Pro
  • NR New Radio
  • the wireless communications system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission critical) communications, low latency communications, communications with low-cost and low-complexity devices, or any combination thereof.
  • ultra-reliable e.g., mission critical
  • the base stations 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may be devices in different forms or having different capabilities.
  • the base stations 105 and the UEs 115 may wirelessly communicate via one or more communication links 125.
  • Each base station 105 may provide a coverage area 110 over which the UEs 115 and the base station 105 may establish one or more communication links 125.
  • the coverage area 110 may be an example of a geographic area over which a base station 105 and a UE 115 may support the communication of signals according to one or more radio access technologies.
  • the UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times.
  • the UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1.
  • the UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115, the base stations 105, or network equipment (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment) , as shown in FIG. 1.
  • network equipment e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment
  • the base stations 105 may communicate with the core network 130, or with one another, or both.
  • the base stations 105 may interface with the core network 130 through one or more backhaul links 120 (e.g., via an S1, N2, N3, or other interface) .
  • the base stations 105 may communicate with one another over the backhaul links 120 (e.g., via an X2, Xn, or other interface) either directly (e.g., directly between base stations 105) , or indirectly (e.g., via core network 130) , or both.
  • the backhaul links 120 may be or include one or more wireless links.
  • One or more of the base stations 105 described herein may include or may be referred to by a person having ordinary skill in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation NodeB or a giga-NodeB (either of which may be referred to as a gNB) , a Home NodeB, a Home eNodeB, or other suitable terminology.
  • a base transceiver station a radio base station
  • an access point a radio transceiver
  • a NodeB an eNodeB (eNB)
  • eNB eNodeB
  • a next-generation NodeB or a giga-NodeB either of which may be referred to as a gNB
  • gNB giga-NodeB
  • a UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples.
  • a UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA) , a tablet computer, a laptop computer, or a personal computer.
  • PDA personal digital assistant
  • a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, or vehicles, meters, among other examples.
  • WLL wireless local loop
  • IoT Internet of Things
  • IoE Internet of Everything
  • MTC machine type communications
  • the UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115 that may sometimes act as relays as well as the base stations 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
  • devices such as other UEs 115 that may sometimes act as relays as well as the base stations 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
  • the UEs 115 and the base stations 105 may wirelessly communicate with one another via one or more communication links 125 over one or more carriers.
  • the term “carrier” may refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting the communication links 125.
  • a carrier used for a communication link 125 may include a portion of a radio frequency spectrum band (e.g., a bandwidth part (BWP) ) that is operated according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR) .
  • BWP bandwidth part
  • Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information) , control signaling that coordinates operation for the carrier, user data, or other signaling.
  • the wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation.
  • a UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration.
  • Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers.
  • FDD frequency division duplexing
  • TDD time division duplexing
  • Signal waveforms transmitted over a carrier may be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM) ) .
  • MCM multi-carrier modulation
  • OFDM orthogonal frequency division multiplexing
  • DFT-S-OFDM discrete Fourier transform spread OFDM
  • a resource element may consist of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related.
  • the number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both) .
  • a wireless communications resource may refer to a combination of a radio frequency spectrum resource, a time resource, and a spatial resource (e.g., spatial layers or beams) , and the use of multiple spatial layers may further increase the data rate or data integrity for communications with a UE 115.
  • Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms) ) .
  • Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023) .
  • SFN system frame number
  • Each frame may include multiple consecutively numbered subframes or slots, and each subframe or slot may have the same duration.
  • a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a number of slots.
  • each frame may include a variable number of slots, and the number of slots may depend on subcarrier spacing.
  • Each slot may include a number of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period) .
  • a slot may further be divided into multiple mini-slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N f ) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
  • a subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI) .
  • TTI duration e.g., the number of symbol periods in a TTI
  • the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) ) .
  • Physical channels may be multiplexed on a carrier according to various techniques.
  • a physical control channel and a physical data channel may be multiplexed on a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques.
  • a control region e.g., a control resource set (CORESET)
  • CORESET control resource set
  • a control region for a physical control channel may be defined by a number of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier.
  • One or more control regions (e.g., CORESETs) may be configured for a set of the UEs 115.
  • one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner.
  • An aggregation level for a control channel candidate may refer to a number of control channel resources (e.g., control channel elements (CCEs) ) associated with encoded information for a control information format having a given payload size.
  • Search space sets may include common search space sets configured for sending control information to multiple UEs 115 and UE-specific search space sets for sending control information to a specific UE 115.
  • a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT) , enhanced mobile broadband (eMBB) ) that may provide access for different types of devices.
  • protocol types e.g., MTC, narrowband IoT (NB-IoT) , enhanced mobile broadband (eMBB)
  • NB-IoT narrowband IoT
  • eMBB enhanced mobile broadband
  • a base station 105 may be movable and therefore provide communication coverage for a moving geographic coverage area 110.
  • different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105.
  • the overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105.
  • the wireless communications system 100 may include, for example, a heterogeneous network in which different types of the base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.
  • Some UEs 115 may be low cost or low complexity devices and may provide for automated communication between machines (e.g., via Machine-to-Machine (M2M) communication) .
  • M2M communication or MTC may refer to data communication technologies that allow devices to communicate with one another or a base station 105 without human intervention.
  • M2M communication or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application program that makes use of the information or presents the information to humans interacting with the application program.
  • Some UEs 115 may be designed to collect information or enable automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business charging.
  • Some UEs 115 may be configured to employ operating modes that reduce power consumption, such as half-duplex communications (e.g., a mode that supports one-way communication via transmission or reception, but not transmission and reception simultaneously) .
  • half-duplex communications may be performed at a reduced peak rate.
  • Other power conservation techniques for the UEs 115 include entering a power saving deep sleep mode when not engaging in active communications, operating over a limited bandwidth (e.g., according to narrowband communications) , or a combination of these techniques.
  • some UEs 115 may be configured for operation using a narrowband protocol type that is associated with a defined portion or range (e.g., set of subcarriers or resource blocks (RBs) ) within a carrier, within a guard-band of a carrier, or outside of a carrier.
  • a narrowband protocol type that is associated with a defined portion or range (e.g., set of subcarriers or resource blocks (RBs) ) within a carrier, within a guard-band of a carrier, or outside of a carrier.
  • the wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof.
  • the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC) or mission critical communications.
  • the UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions (e.g., mission critical functions) .
  • Ultra-reliable communications may include private communication or group communication and may be supported by one or more mission critical services such as mission critical push-to-talk (MCPTT) , mission critical video (MCVideo) , or mission critical data (MCData) .
  • MCPTT mission critical push-to-talk
  • MCVideo mission critical video
  • MCData mission critical data
  • Support for mission critical functions may include prioritization of services, and mission critical services may be used for public safety or general commercial applications.
  • the terms ultra-reliable, low-latency, mission critical, and ultra-reliable low-latency may be used interchangeably herein.
  • a UE 115 may also be able to communicate directly with other UEs 115 over a D2D communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol) .
  • P2P peer-to-peer
  • One or more UEs 115 utilizing D2D communications may be within the geographic coverage area 110 of a base station 105.
  • Other UEs 115 in such a group may be outside the geographic coverage area 110 of a base station 105 or be otherwise unable to receive transmissions from a base station 105.
  • groups of the UEs 115 communicating via D2D communications may utilize a one-to-many (1: M) system in which each UE 115 transmits to every other UE 115 in the group.
  • a base station 105 facilitates the scheduling of resources for D2D communications.
  • D2D communications are carried out between the UEs 115 without the involvement of a base station 105.
  • the D2D communication link 135 may be an example of a communication channel, such as a sidelink communication channel, between vehicles (e.g., UEs 115) .
  • vehicles may communicate using V2X communications, vehicle-to-vehicle (V2V) communications, or some combination of these.
  • V2X vehicle-to-vehicle
  • a vehicle may signal information related to traffic conditions, signal scheduling, weather, safety, emergencies, or any other information relevant to a V2X system.
  • vehicles in a V2X system may communicate with roadside infrastructure, such as roadside units, or with the network via one or more network nodes (e.g., base stations 105) using vehicle-to-network (V2N) communications, or with both.
  • V2N vehicle-to-network
  • the core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions.
  • the core network 130 may be an evolved packet core (EPC) or 5G core (5GC) , which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management function (AMF) ) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) .
  • EPC evolved packet core
  • 5GC 5G core
  • MME mobility management entity
  • AMF access and mobility management function
  • S-GW serving gateway
  • PDN Packet Data Network gateway
  • UPF user plane function
  • the control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the base stations 105 associated with the core network 130.
  • NAS non-access stratum
  • User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions.
  • the user plane entity may be coupled to IP services 150 for one or more network operators.
  • the IP services 150 may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched Streaming Service.
  • Some of the network devices may include subcomponents such as an access network entity 140, which may be an example of an access node controller (ANC) .
  • Each access network entity 140 may communicate with the UEs 115 through one or more other access network transmission entities 145, which may be referred to as radio heads, smart radio heads, or transmission/reception points (TRPs) .
  • Each access network transmission entity 145 may include one or more antenna panels.
  • various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or consolidated into a single network device (e.g., a base station 105) .
  • the wireless communications system 100 may operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz) .
  • the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length.
  • UHF waves may be blocked or redirected by buildings and environmental features, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors.
  • the transmission of UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to transmission using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
  • HF high frequency
  • VHF very high frequency
  • the wireless communications system 100 may utilize both licensed and unlicensed radio frequency spectrum bands.
  • the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band.
  • LAA License Assisted Access
  • LTE-U LTE-Unlicensed
  • NR NR technology
  • an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band.
  • devices such as the base stations 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance.
  • operations in unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating in a licensed band (e.g., LAA) .
  • Operations in unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.
  • a base station 105 or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming.
  • the antennas of a base station 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming.
  • one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower.
  • antennas or antenna arrays associated with a base station 105 may be located in diverse geographic locations.
  • a base station 105 may have an antenna array with a number of rows and columns of antenna ports that the base station 105 may use to support beamforming of communications with a UE 115.
  • a UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations.
  • an antenna panel may support radio frequency beamforming for a signal transmitted via an antenna port.
  • Beamforming which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device.
  • Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating at particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference.
  • the adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device.
  • the adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
  • a base station 105 or a UE 115 may use beam sweeping techniques as part of beam forming operations.
  • a base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to conduct beamforming operations for directional communications with a UE 115.
  • Some signals e.g., synchronization signals, reference signals, beam selection signals, or other control signals
  • the base station 105 may transmit a signal according to different beamforming weight sets associated with different directions of transmission.
  • Transmissions in different beam directions may be used to identify (e.g., by a transmitting device, such as a base station 105, or by a receiving device, such as a UE 115) a beam direction for later transmission or reception by the base station 105.
  • a transmitting device such as a base station 105
  • a receiving device such as a UE 115
  • Some signals may be transmitted by a base station 105 in a single beam direction (e.g., a direction associated with the receiving device, such as a UE 115) .
  • the beam direction associated with transmissions along a single beam direction may be determined based on a signal that was transmitted in one or more beam directions.
  • a UE 115 may receive one or more of the signals transmitted by the base station 105 in different directions and may report to the base station 105 an indication of the signal that the UE 115 received with a highest signal quality or an otherwise acceptable signal quality.
  • transmissions by a device may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from a base station 105 to a UE 115) .
  • the UE 115 may report feedback that indicates precoding weights for one or more beam directions, and the feedback may correspond to a configured number of beams across a system bandwidth or one or more sub-bands.
  • the base station 105 may transmit a reference signal (e.g., a cell-specific reference signal (CRS) , a channel state information reference signal (CSI-RS) ) , which may be precoded or unprecoded.
  • a reference signal e.g., a cell-specific reference signal (CRS) , a channel state information reference signal (CSI-RS)
  • CRS cell-specific reference signal
  • CSI-RS channel state information reference signal
  • the UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook) .
  • PMI precoding matrix indicator
  • codebook-based feedback e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook
  • a UE 115 may employ similar techniques for transmitting signals multiple times in different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE 115) or for transmitting a signal in a single direction (e.g., for transmitting data to a receiving device) .
  • a receiving device may try multiple receive configurations (e.g., directional listening) when receiving various signals from the base station 105, such as synchronization signals, reference signals, beam selection signals, or other control signals.
  • receive configurations e.g., directional listening
  • a receiving device may try multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as “listening” according to different receive configurations or receive directions.
  • receive beamforming weight sets e.g., different directional listening weight sets
  • a receiving device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal) .
  • the single receive configuration may be aligned in a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have a highest signal strength, highest signal-to-noise ratio (SNR) , or otherwise acceptable signal quality based on listening according to multiple beam directions) .
  • SNR signal-to-noise ratio
  • the wireless communications system 100 may be a packet-based network that operates according to a layered protocol stack.
  • communications at the bearer or Packet Data Convergence Protocol (PDCP) layer may be IP-based.
  • a Radio Link Control (RLC) layer may perform packet segmentation and reassembly to communicate over logical channels.
  • RLC Radio Link Control
  • a Medium Access Control (MAC) layer may perform priority handling and multiplexing of logical channels into transport channels.
  • the MAC layer may also use error detection techniques, error correction techniques, or both to support retransmissions at the MAC layer to improve link efficiency.
  • the Radio Resource Control (RRC) protocol layer may provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a base station 105 or a core network 130 supporting radio bearers for user plane data.
  • RRC Radio Resource Control
  • transport channels may be mapped to physical channels.
  • the UEs 115 and the base stations 105 may support retransmissions of data to increase the likelihood that data is received successfully.
  • Hybrid automatic repeat request (HARQ) feedback is one technique for increasing the likelihood that data is received correctly over a communication link 125.
  • HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC) ) , forward error correction (FEC) , and retransmission (e.g., automatic repeat request (ARQ) ) .
  • FEC forward error correction
  • ARQ automatic repeat request
  • HARQ may improve throughput at the MAC layer in poor radio conditions (e.g., low signal-to-noise conditions) .
  • a device may support same-slot HARQ feedback, where the device may provide HARQ feedback in a specific slot for data received in a previous symbol in the slot. In other cases, the device may provide HARQ feedback in a subsequent slot, or according to some other time interval.
  • a DRX paging cycle and a temporal offset value may be configured for sidelink communications between a first UE 115 and a second UE 115.
  • the first UE 115 may receive, from the second UE 115, configuration signaling for sidelink communications with the second UE 115.
  • the configuration signaling may indicate a DRX paging cycle (e.g., for a wake-up signal) and a temporal offset value (e.g., a wake-up signal temporal offset value) .
  • the first UE 115 may monitor for and detect the wake-up signal from the second UE 115 according to the DRX paging cycle.
  • the first UE 115 may monitor a paging occasion for a set of data packets transmitted from the second UE 115, based on the DRX paging cycle and the temporal offset value.
  • the configuration signaling may be transmitted over an radio resource control message or a media access control-control element.
  • FIG. 2 illustrates an example of a wireless communications system 200 that supports device-to-device DRX latency enhancement in accordance with aspects of the present disclosure.
  • the wireless communications system 200 may implement aspects of the wireless communications system 100.
  • the wireless communications system 200 may include UEs 215, which may be examples of the corresponding devices described with reference to FIG. 1.
  • the wireless communications system 200 may include features for improved sidelink communication operations, among other benefits.
  • a DRX paging cycle and a temporal offset value may be configured for sidelink communications between a UE 115-b and a UE 115-a.
  • the UE 115-b may receive, from the UE 115-a, configuration signaling 230 for sidelink communications with the UE 115-a.
  • the configuration signaling 230 may indicate a DRX paging cycle (e.g., for a wake-up signal 225) and a temporal offset value (e.g., a wake-up signal temporal offset value) .
  • the UE 115-b may monitor for and detect the wake-up signal 225 from the UE 115-a according to the DRX paging cycle.
  • the UE 115-b may monitor a paging occasion for a set of data packets (e.g., a data transmission 220) transmitted from the UE 115-a, based on the DRX paging cycle and the temporal offset value. For example, upon detecting the wake-up signal 225, the UE 215-b may wake up to receive the data packets in the data transmission 220. In some aspects, after the UE 215-b receives the data packets in the data transmission 220, the UE 215-b may enter an idle state to wait for a next wake-up signal 225 for a next data transmission 220. In some aspects, the configuration signaling 230 may be transmitted over an radio resource control message or a media access control-control element.
  • the UE 115-b may further receive, from the UE 115-a, second configuration signaling 235 associated with modifying the DRX paging cycle, the temporal offset value, or both.
  • the UE 115-b may monitor for wake-up signals 225 based on the modified DRX paging cycle.
  • the UE 115-b may monitor paging occasions for data packets (e.g., a data transmission 220) transmitted from the UE 115-a based on the modified DRX paging cycle, the modified temporal offset value, or both.
  • the UE 115-b may monitor for wake-up signals 225 and paging occasions according to a default DRX cycle time and default temporal offset value.
  • the UE 115-b may use the default DRX cycle time and default temporal offset value for cases in which the UE 115-b has not received any configuration signaling 230 (e.g., not received a DRX paging cycle or a temporal offset value) or configuration signaling 235 from the UE 115-a for a duration exceeding a threshold.
  • the UE 115-b may monitor for wake-up signals 225 and monitor paging occasions for data packets (e.g., data transmission 220) based on the default DRX cycle time and default temporal offset value.
  • the configuration signaling 230 received by the UE 115-b from the UE 115-a may override the default DRX cycle time and default temporal offset value.
  • the configuration signaling 230 received by the UE 115-b from the UE 115-a may have a higher priority than the default DRX cycle time and default temporal offset value.
  • UE 215-a may assign one or more non-periodic wake-up signal occasion occurring times to UE 215-b.
  • UE 215-a may assign DRX cycle times of 120 ms, 200 ms, 210 ms (e.g., with respect to a reference temporal instance) to UE 215-b for detecting wake-up signals 225.
  • UE 215-a may assign a temporal offset value (also referred to herein as a paging time) with reference to the DRX cycle times.
  • UE 215-b may wake up after 120 ms to monitor for a wake-up signal 225.
  • UE 215-b may again wake up after 200 ms to monitor for a wake-up signal 225.
  • UE 215-b may again wake up after 210 ms to monitor for a wake-up signal 225.
  • the assigned next wake-up signal time (e.g., 120 ms, 200 ms, 210 ms) and temporal offset value (e.g., paging time) may be a single value.
  • the UE 215-a may assign the UE 215-b a wake-up signal time and paging time of 30 seconds. Based on the single value, for example, UE 215-b may wake up after 30 seconds.
  • the UE 215-a may be capable of modifying or updating (e.g., overriding) the wake-up signal ordered timelines to UE 215-b (e.g., override the assigned DRX cycle times) at any temporal instance during which the UE 215-b is awake (e.g., the UE 215-b is in an awake state based on previously assigned DRX cycle times) .
  • the wake-up signal techniques in sidelink D2D communications described herein may reduce UE power consumption and latency.
  • FIG. 3 illustrates an example of a process flow 300 that supports device-to-device DRX latency enhancement in accordance with aspects of the present disclosure.
  • the process flow 300 may be implemented by or may implement aspects of wireless communications systems 100 and 200.
  • the process flow 300 may include example operations associated with a set of UEs 315, which may be examples of the corresponding devices described with reference to FIGs. 1 and 2.
  • the operations between the UEs 315 may be performed in a different order than the example order shown, or the operations performed by the UEs 315 may be performed in different orders or at different times. Some operations may also be omitted from the process flow 300, and other operations may be added to the process flow 300.
  • the operations performed by the UEs 315 may promote improvements to efficiency and reliability for sidelink communications between the UEs 315, among other benefits.
  • the UE 115-a may identify a configuration for sidelink communications with a first UE, the configuration including a DRX paging cycle for a wake-up signal and a temporal offset value (e.g., a wake-up signal temporal offset value) .
  • the UE 315-a may transmit (and the UE 315-b may receive) configuration signaling, the configuration signaling including (or indicating) the DRX paging cycle and the temporal offset value.
  • transmitting the configuration signaling may include transmitting a radio resource control message or a media access control-control element.
  • the UE 315-b may monitor for a wake-up signal from the UE 315-a based on the DRX paging cycle.
  • the UE 315-a may transmit the wake-up signal to the UE 315-b (and the UE 315-b may detect the wake-up signal) based on the DRX paging cycle.
  • the UE 115-b may monitor a paging occasion for a set of data packets transmitted from the UE 115-a based on the DRX paging cycle and the temporal offset value.
  • the UE 315-a may transmit (and the UE 315-b may receive) a set of data packets to the UE 315-b based on the DRX paging cycle and the temporal offset value.
  • the operations performed by the UEs 315 may promote improvements to efficiency and reliability for sidelink communications between the UEs 315, among other benefits.
  • FIG. 4 shows a block diagram 400 of a device 405 that supports device-to-device discontinuous reception latency enhancement in accordance with aspects of the present disclosure.
  • the device 405 may be an example of aspects of a UE 115 as described herein.
  • the device 405 may include a receiver 410, a communications manager 415, and a transmitter 420.
  • the device 405 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
  • the receiver 410 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to device-to-device discontinuous reception latency enhancement, etc. ) . Information may be passed on to other components of the device 405.
  • the receiver 410 may be an example of aspects of the transceiver 720 described with reference to FIG. 7.
  • the receiver 410 may utilize a single antenna or a set of antennas.
  • the communications manager 415 may receive, from a second UE, configuration signaling for sidelink communications with the second UE, the configuration signaling indicating a discontinuous reception paging cycle for a wake-up signal and a temporal offset value, monitor for the wake-up signal from the second UE based on the discontinuous reception paging cycle, and monitor a paging occasion for a set of data packets transmitted from the second UE based on the discontinuous reception paging cycle and the temporal offset value.
  • the communications manager 415 may also identify, at the second UE, a configuration for sidelink communications with a first UE, the configuration including a discontinuous reception paging cycle for a wake-up signal and a temporal offset value, transmit configuration signaling to the first UE, the configuration signaling including the discontinuous reception paging cycle and the temporal offset value, transmit the wake-up signal to the first UE based on the discontinuous reception paging cycle, and transmit a set of data packets to the first UE based on the discontinuous reception paging cycle and the temporal offset value.
  • the communications manager 415 may be an example of aspects of the communications manager 710 described herein.
  • the communications manager 415 may be implemented in hardware, code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communications manager 415, or its sub-components may be executed by a general-purpose processor, a DSP, an application-specific integrated circuit (ASIC) , a FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.
  • code e.g., software or firmware
  • ASIC application-specific integrated circuit
  • the communications manager 415 may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical components.
  • the communications manager 415, or its sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure.
  • the communications manager 415, or its sub-components may be combined with one or more other hardware components, including but not limited to an input/output (I/O) component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.
  • I/O input/output
  • the transmitter 420 may transmit signals generated by other components of the device 405.
  • the transmitter 420 may be collocated with a receiver 410 in a transceiver module.
  • the transmitter 420 may be an example of aspects of the transceiver 720 described with reference to FIG. 7.
  • the transmitter 420 may utilize a single antenna or a set of antennas.
  • FIG. 5 shows a block diagram 500 of a device 505 that supports device-to-device discontinuous reception latency enhancement in accordance with aspects of the present disclosure.
  • the device 505 may be an example of aspects of a device 405, or a UE 115 as described herein.
  • the device 505 may include a receiver 510, a communications manager 515, and a transmitter 535.
  • the device 505 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
  • the receiver 510 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to device-to-device discontinuous reception latency enhancement, etc. ) . Information may be passed on to other components of the device 505.
  • the receiver 510 may be an example of aspects of the transceiver 720 described with reference to FIG. 7.
  • the receiver 510 may utilize a single antenna or a set of antennas.
  • the communications manager 515 may be an example of aspects of the communications manager 415 as described herein.
  • the communications manager 515 may include a configuration manager 520, a wake-up signal manager 525, and a data packet manager 530.
  • the communications manager 515 may be an example of aspects of the communications manager 710 described herein.
  • the configuration manager 520 may receive, from a second UE, configuration signaling for sidelink communications with the second UE, the configuration signaling indicating a discontinuous reception paging cycle for a wake-up signal and a temporal offset value.
  • the wake-up signal manager 525 may monitor for the wake-up signal from the second UE based on the discontinuous reception paging cycle.
  • the data packet manager 530 may monitor a paging occasion for a set of data packets transmitted from the second UE based on the discontinuous reception paging cycle and the temporal offset value.
  • the configuration manager 520 may identify, at the second UE, a configuration for sidelink communications with a first UE, the configuration including a discontinuous reception paging cycle for a wake-up signal and a temporal offset value and transmit configuration signaling to the first UE, the configuration signaling including the discontinuous reception paging cycle and the temporal offset value.
  • the wake-up signal manager 525 may transmit the wake-up signal to the first UE based on the discontinuous reception paging cycle.
  • the data packet manager 530 may transmit a set of data packets to the first UE based on the discontinuous reception paging cycle and the temporal offset value.
  • the transmitter 535 may transmit signals generated by other components of the device 505.
  • the transmitter 535 may be collocated with a receiver 510 in a transceiver module.
  • the transmitter 535 may be an example of aspects of the transceiver 720 described with reference to FIG. 7.
  • the transmitter 535 may utilize a single antenna or a set of antennas.
  • FIG. 6 shows a block diagram 600 of a communications manager 605 that supports device-to-device discontinuous reception latency enhancement in accordance with aspects of the present disclosure.
  • the communications manager 605 may be an example of aspects of a communications manager 415, a communications manager 515, or a communications manager 710 described herein.
  • the communications manager 605 may include a configuration manager 610, a wake-up signal manager 615, and a data packet manager 620. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
  • the configuration manager 610 may receive, from a second UE, configuration signaling for sidelink communications with the second UE, the configuration signaling indicating a discontinuous reception paging cycle for a wake-up signal and a temporal offset value.
  • the configuration manager 610 may identify, at the second UE, a configuration for sidelink communications with a first UE, the configuration including a discontinuous reception paging cycle for a wake-up signal and a temporal offset value.
  • the configuration manager 610 may transmit configuration signaling to the first UE, the configuration signaling including the discontinuous reception paging cycle and the temporal offset value.
  • the configuration manager 610 may receive, from the second UE, second configuration signaling associated with modifying the discontinuous reception paging cycle, the temporal offset value, or both, where.
  • the configuration manager 610 may determine a duration has elapsed without receiving the configuration signaling.
  • the configuration manager 610 may identify a default discontinuous reception paging cycle for the wake-up signal, a default temporal offset value, or both, based on the duration exceeding a threshold, where.
  • the configuration manager 610 may override the default discontinuous reception paging cycle for the wake-up signal with the discontinuous reception paging cycle, overriding the default temporal offset value with the temporal offset value, or both, based on receiving the configuration signaling.
  • receiving the configuration signaling includes receiving a radio resource control message or a media access control-control element.
  • the configuration manager 610 may transmit, to the first UE, second configuration signaling associated with modifying or overriding the discontinuous reception paging cycle, the temporal offset value, or both, .
  • the configuration manager 610 may identify a set of conditions associated with modifying or overriding the default discontinuous reception paging cycle, overriding the default temporal offset value, or both,.
  • the configuration manager 610 may where transmitting the second configuration signaling is based on the set of conditions being satisfied.
  • transmitting the configuration signaling includes transmitting a radio resource control message or a media access control-control element.
  • the wake-up signal manager 615 may monitor for the wake-up signal from the second UE based on the discontinuous reception paging cycle.
  • the wake-up signal manager 615 may transmit the wake-up signal to the first UE based on the discontinuous reception paging cycle.
  • the wake-up signal manager 615 may monitor for the wake-up signal is based on the modified discontinuous reception paging cycle.
  • the wake-up signal manager 615 may monitor for the wake-up signal is based on the default discontinuous reception paging cycle.
  • the wake-up signal manager 615 may where transmitting the wake-up signal, transmitting the set of data packets, or both, is based on the second configuration signaling.
  • the data packet manager 620 may monitor a paging occasion for a set of data packets transmitted from the second UE based on the discontinuous reception paging cycle and the temporal offset value.
  • the data packet manager 620 may transmit a set of data packets to the first UE based on the discontinuous reception paging cycle and the temporal offset value.
  • the data packet manager 620 may monitor the paging occasion for a set of data packets transmitted from the second UE is based on the modified discontinuous reception paging cycle, the modified temporal offset value, or both.
  • the data packet manager 620 may monitor the paging occasion for the set of data packets transmitted from the second UE is based on the default discontinuous reception paging cycle, the default temporal offset value, or both.
  • FIG. 7 shows a diagram of a system 700 including a device 705 that supports device-to-device discontinuous reception latency enhancement in accordance with aspects of the present disclosure.
  • the device 705 may be an example of or include the components of device 405, device 505, or a UE 115 as described herein.
  • the device 705 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager 710, an I/O controller 715, a transceiver 720, an antenna 725, memory 730, and a processor 740. These components may be in electronic communication via one or more buses (e.g., bus 745) .
  • buses e.g., bus 745
  • the communications manager 710 may receive, from a second UE, configuration signaling for sidelink communications with the second UE, the configuration signaling indicating a discontinuous reception paging cycle for a wake-up signal and a temporal offset value, monitor for the wake-up signal from the second UE based on the discontinuous reception paging cycle, and monitor a paging occasion for a set of data packets transmitted from the second UE based on the discontinuous reception paging cycle and the temporal offset value.
  • the communications manager 710 may also identify, at the second UE, a configuration for sidelink communications with a first UE, the configuration including a discontinuous reception paging cycle for a wake-up signal and a temporal offset value, transmit configuration signaling to the first UE, the configuration signaling including the discontinuous reception paging cycle and the temporal offset value, transmit the wake-up signal to the first UE based on the discontinuous reception paging cycle, and transmit a set of data packets to the first UE based on the discontinuous reception paging cycle and the temporal offset value.
  • the I/O controller 715 may manage input and output signals for the device 705.
  • the I/O controller 715 may also manage peripherals not integrated into the device 705.
  • the I/O controller 715 may represent a physical connection or port to an external peripheral.
  • the I/O controller 715 may utilize an operating system such as or another known operating system.
  • the I/O controller 715 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device.
  • the I/O controller 715 may be implemented as part of a processor.
  • a user may interact with the device 705 via the I/O controller 715 or via hardware components controlled by the I/O controller 715.
  • the transceiver 720 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above.
  • the transceiver 720 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 720 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas.
  • the wireless device may include a single antenna 725. However, in some cases the device may have more than one antenna 725, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the memory 730 may include RAM and ROM.
  • the memory 730 may store computer-readable, computer-executable code 735 including instructions that, when executed, cause the processor to perform various functions described herein.
  • the memory 730 may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • the processor 740 may include an intelligent hardware device, (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) .
  • the processor 740 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 740.
  • the processor 740 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 730) to cause the device 705 to perform various functions (e.g., functions or tasks supporting device-to-device discontinuous reception latency enhancement) .
  • the code 735 may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications.
  • the code 735 may be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code 735 may not be directly executable by the processor 740 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • FIG. 8 shows a flowchart illustrating a method 800 that supports device-to-device discontinuous reception latency enhancement in accordance with aspects of the present disclosure.
  • the operations of method 800 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 800 may be performed by a communications manager as described with reference to FIGs. 4 through 7.
  • a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, a UE may perform aspects of the functions described below using special-purpose hardware.
  • the UE may receive, from a second UE, configuration signaling for sidelink communications with the second UE, the configuration signaling indicating a discontinuous reception paging cycle for a wake-up signal and a temporal offset value.
  • the operations of 805 may be performed according to the methods described herein. In some examples, aspects of the operations of 805 may be performed by a configuration manager as described with reference to FIGs. 4 through 7.
  • the UE may monitor for the wake-up signal from the second UE based on the discontinuous reception paging cycle.
  • the operations of 810 may be performed according to the methods described herein. In some examples, aspects of the operations of 810 may be performed by a wake-up signal manager as described with reference to FIGs. 4 through 7.
  • the UE may monitor a paging occasion for a set of data packets transmitted from the second UE based on the discontinuous reception paging cycle and the temporal offset value.
  • the operations of 815 may be performed according to the methods described herein. In some examples, aspects of the operations of 815 may be performed by a data packet manager as described with reference to FIGs. 4 through 7.
  • FIG. 9 shows a flowchart illustrating a method 900 that supports device-to-device discontinuous reception latency enhancement in accordance with aspects of the present disclosure.
  • the operations of method 900 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 900 may be performed by a communications manager as described with reference to FIGs. 4 through 7.
  • a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, a UE may perform aspects of the functions described below using special-purpose hardware.
  • the UE may identify, at the second UE, a configuration for sidelink communications with a first UE, the configuration including a discontinuous reception paging cycle for a wake-up signal and a temporal offset value.
  • the operations of 905 may be performed according to the methods described herein. In some examples, aspects of the operations of 905 may be performed by a configuration manager as described with reference to FIGs. 4 through 7.
  • the UE may transmit configuration signaling to the first UE, the configuration signaling including the discontinuous reception paging cycle and the temporal offset value.
  • the operations of 910 may be performed according to the methods described herein. In some examples, aspects of the operations of 910 may be performed by a configuration manager as described with reference to FIGs. 4 through 7.
  • the UE may transmit the wake-up signal to the first UE based on the discontinuous reception paging cycle.
  • the operations of 915 may be performed according to the methods described herein. In some examples, aspects of the operations of 915 may be performed by a wake-up signal manager as described with reference to FIGs. 4 through 7.
  • the UE may transmit a set of data packets to the first UE based on the discontinuous reception paging cycle and the temporal offset value.
  • the operations of 920 may be performed according to the methods described herein. In some examples, aspects of the operations of 920 may be performed by a data packet manager as described with reference to FIGs. 4 through 7.
  • LTE, LTE-A, LTE-A Pro, or NR may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks.
  • the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB) , Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein.
  • UMB Ultra Mobile Broadband
  • IEEE Institute of Electrical and Electronics Engineers
  • Wi-Fi Institute of Electrical and Electronics Engineers
  • WiMAX IEEE 802.16
  • IEEE 802.20 Flash-OFDM
  • Information and signals described herein may be represented using any of a variety of different technologies and techniques.
  • data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any 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, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) .
  • the functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
  • Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer.
  • non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory 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.
  • any connection is 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, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave
  • the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium.
  • Disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD) , floppy disk and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne des procédés, des systèmes et des dispositifs de communications sans fil. Un premier UE peut recevoir, d'un second UE, une signalisation de configuration pour des communications de liaison latérale avec le second UE. La signalisation de configuration peut indiquer un cycle de radiorepérage de réception discontinue et une valeur de décalage temporel. Le premier UE peut surveiller et détecter un signal de réveil provenant du second UE selon le cycle de radiorepérage de réception discontinue. Le premier UE peut surveiller une occasion de radiorepérage pour un ensemble de paquets de données transmis par le second UE, sur la base du cycle de radiorepérage de réception discontinue et de la valeur de décalage temporel. Selon certains aspects, la signalisation de configuration peut être transmise par le biais d'un message de commande de ressources radioélectriques ou d'un élément de commande de commande d'accès au support.
PCT/CN2020/121396 2020-10-16 2020-10-16 Amélioration de latence de réception discontinue de dispositif à dispositif WO2022077416A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/121396 WO2022077416A1 (fr) 2020-10-16 2020-10-16 Amélioration de latence de réception discontinue de dispositif à dispositif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/121396 WO2022077416A1 (fr) 2020-10-16 2020-10-16 Amélioration de latence de réception discontinue de dispositif à dispositif

Publications (1)

Publication Number Publication Date
WO2022077416A1 true WO2022077416A1 (fr) 2022-04-21

Family

ID=81208753

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/121396 WO2022077416A1 (fr) 2020-10-16 2020-10-16 Amélioration de latence de réception discontinue de dispositif à dispositif

Country Status (1)

Country Link
WO (1) WO2022077416A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018064477A1 (fr) * 2016-09-30 2018-04-05 Intel IP Corporation Systèmes et procédés de réception discontinue dans une communication de dispositif à dispositif
US20190028954A1 (en) * 2017-07-19 2019-01-24 Lg Electronics Inc. Method and apparatus for transmitting and receiving a signal in a wireless communication system supporting a relay ue
CN110915267A (zh) * 2017-05-12 2020-03-24 索尼公司 中继链路上的唤醒信号发送

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018064477A1 (fr) * 2016-09-30 2018-04-05 Intel IP Corporation Systèmes et procédés de réception discontinue dans une communication de dispositif à dispositif
CN110915267A (zh) * 2017-05-12 2020-03-24 索尼公司 中继链路上的唤醒信号发送
US20190028954A1 (en) * 2017-07-19 2019-01-24 Lg Electronics Inc. Method and apparatus for transmitting and receiving a signal in a wireless communication system supporting a relay ue

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ERICSSON: "Introduction of Wake Up Signal in NB-IoT", 3GPP DRAFT; R2-1807775, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Busan, South Korea; 20180521 - 20180525, 20 May 2018 (2018-05-20), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051444118 *

Similar Documents

Publication Publication Date Title
US11452043B2 (en) Power enhancement techniques for vehicle-to-pedestrian wireless communication systems
EP3991478A1 (fr) Gestion de liaison assistée par un signal de réveil
US11510176B2 (en) User equipment assistance for paging procedures
US20230164819A1 (en) Uplink control information multiplexing rule for simultaneous uplink control channel and uplink shared channel transmission
US11902865B2 (en) Vehicle based wireless communications
US11706709B2 (en) Micro sleep techniques in star topology sidelink communications
US11750338B2 (en) Hybrid automatic repeat request feedback for sidelink
US11671956B2 (en) Beam measurement on sidelink
US11671940B2 (en) Sidelink communication during a downlink slot
WO2021259159A1 (fr) Support de capacité de commutation de signal de référence de sondage flexible
US20220232474A1 (en) Ue idle and inactive mode enhancement with sidelink
WO2022000484A1 (fr) Conception de signal de réveil pour de multiples sessions de multidiffusion
WO2022032079A2 (fr) Mesures précoces de « minimization of drive test » journalisée
WO2022077416A1 (fr) Amélioration de latence de réception discontinue de dispositif à dispositif
WO2022061794A1 (fr) Techniques de signalisation de réveil dans des communications de liaison latérale
US11758592B2 (en) Implicit beam indication
US11553425B2 (en) Wakeup signal for new radio multicast communications
WO2022036586A1 (fr) Configuration adaptative de cycle de réception discontinue pour des flux actifs
US20240098694A1 (en) Paging occasion update using a registration request
US20230199649A1 (en) Signaling to wake up a cell
WO2022170556A1 (fr) Identifiant d'équipement utilisateur supplémentaire pour réponse de radiomessagerie
WO2021223135A1 (fr) Partage d'informations de cellule d'accès dans un équipement d'utilisateur nouvelle radio double
WO2022170573A1 (fr) Solution de libération de signalisation rapide après réponse de radiomessagerie
WO2022032555A1 (fr) Suppression conditionnelle de transmissions de signaux de référence
WO2022011612A1 (fr) Mise à jour de signal de référence d'affaiblissement de trajet pour de multiples faisceaux

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20957194

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20957194

Country of ref document: EP

Kind code of ref document: A1