WO2021155509A1 - Répétition conjointe de canaux de commande et de canaux de données - Google Patents

Répétition conjointe de canaux de commande et de canaux de données Download PDF

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Publication number
WO2021155509A1
WO2021155509A1 PCT/CN2020/074335 CN2020074335W WO2021155509A1 WO 2021155509 A1 WO2021155509 A1 WO 2021155509A1 CN 2020074335 W CN2020074335 W CN 2020074335W WO 2021155509 A1 WO2021155509 A1 WO 2021155509A1
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WIPO (PCT)
Prior art keywords
repetition number
indication
repetition
repetitions
channel transmission
Prior art date
Application number
PCT/CN2020/074335
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English (en)
Inventor
Yuwei REN
Ruifeng MA
Huilin Xu
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Qualcomm Incorporated
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Publication date
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Priority to PCT/CN2020/074335 priority Critical patent/WO2021155509A1/fr
Publication of WO2021155509A1 publication Critical patent/WO2021155509A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/189—Transmission or retransmission of more than one copy of a message
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling

Definitions

  • the following relates generally to wireless communications and more specifically to joint repetition of control channels and data channels.
  • 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.
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • DFT-S-OFDM discrete Fourier transform spread orthogonal frequency division multiplexing
  • 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) .
  • Some wireless communications systems such as 4G and 5G systems, may support repetition of some physical channels, such as a physical downlink shared channel (PDSCH) to improve reliability of wireless communications (e.g., data) .
  • PDSCH physical downlink shared channel
  • These communications systems may have previously been unable to support repetition of other physical channels, such as a physical downlink control channel (PDCCH) .
  • PDCCH physical downlink control channel
  • a communication device which may be otherwise known as user equipment (UE) , to support repetition of various physical channels, including both physical downlink control channels (PDCCH) and physical downlink shared channels (PDSCH) , in fifth generation (5G) systems.
  • the described techniques may be used to configure the UE to receive an indication that both a PDCCH transmission and a corresponding PDSCH transmission are to be repeated.
  • the UE may be configured to receive the indication dynamically or semi-statically, or both.
  • the communication device may be configured to receive the indication via downlink control information (DCI) , a radio resource control (RRC) message, or a medium access control-control element (MAC-CE) , or any combination thereof.
  • DCI downlink control information
  • RRC radio resource control
  • MAC-CE medium access control-control element
  • the UE may be configured to determine, based on the indication, a repetition number of expected repetitions of the PDCCH transmission and a repetition number of expected repetitions of the corresponding PDSCH transmission.
  • the UE may monitor for the PDCCH transmission or the corresponding PDSCH transmission, or both, in accordance with the repetition number of the PDCCH transmission and the repetition number of the corresponding PDSCH transmission, to receive wireless communications from another communication devices (e.g., a next-generation NodeBs or giga-NodeBs (either of which may be referred to as a gNB) ) .
  • the UE may thus improve coverage for wireless communications by supporting joint repetition of PDCCH and PDSCH.
  • the UE may also provide increased flexibility for wireless communications (e.g., control information, data) and improvements to the reliability of the wireless communications in 5G systems.
  • the described techniques may include features for improvements to power consumption and, in some examples, may promote enhanced efficiency for high reliability and low latency operations in 5G systems, among other benefits.
  • a method of wireless communication at a UE may include receiving an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated, determining, based on the indication, a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission, monitoring for at least one of the downlink control channel transmission or the corresponding downlink data channel transmission in accordance with the first repetition number and the second repetition number, and receiving one or more packets based on the monitoring.
  • 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 an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated, determine, based on the indication, a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission, monitor for at least one of the downlink control channel transmission or the corresponding downlink data channel transmission in accordance with the first repetition number and the second repetition number, and receive one or more packets based on the monitoring.
  • the apparatus may include means for receiving an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated, determining, based on the indication, a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission, monitoring for at least one of the downlink control channel transmission or the corresponding downlink data channel transmission in accordance with the first repetition number and the second repetition number, and receiving one or more packets based on the monitoring.
  • a non-transitory computer-readable medium storing code for wireless communication at a UE is described.
  • the code may include instructions executable by a processor to receive an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated, determine, based on the indication, a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission, monitor for at least one of the downlink control channel transmission or the corresponding downlink data channel transmission in accordance with the first repetition number and the second repetition number, and receive one or more packets based on the monitoring.
  • determining the first repetition number and the second repetition number may include operations, features, means, or instructions for identifying the first repetition number and the second repetition number from the indication, where the indication includes a first value and a second value.
  • the first value may be the first repetition number and the second value may be the second repetition number.
  • the first value may be the first repetition number and the second value may be indicative of a differential between the first repetition number and the second repetition number.
  • receiving the indication may include operations, features, means, or instructions for receiving the indication dynamically via DCI.
  • receiving the indication may include operations, features, means, or instructions for receiving the indication semi-statically via RRC signaling or MAC-CE signaling.
  • determining the first repetition number and the second repetition number may include operations, features, means, or instructions for identifying a repetition pattern from the indication, and determining the first repetition number and the second repetition number from the repetition pattern.
  • the repetition pattern includes all downlink control channel repetitions before all downlink data channel repetitions.
  • each repetition of the downlink control channel repetitions may be the same as an initial transmission of the downlink control channel transmission.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for successive repetitions of the downlink control channel repetitions include a same content but lower code rates than an initial transmission of the downlink control channel transmission.
  • each of the downlink control channel repetitions indicates a corresponding one of the downlink data channel repetitions.
  • each of the downlink control channel repetitions indicates a corresponding one of the downlink data channel repetitions and earlier downlink data channel repetitions that precede the corresponding one of the downlink data channel repetitions.
  • the repetition pattern includes a comb-based pattern.
  • the comb-based pattern includes an interleaving of the downlink control channel transmission and the corresponding downlink data channel transmission.
  • the first repetition number may be greater than the second repetition number.
  • the first repetition number may be less than the second repetition number.
  • 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 a base station, UE-specific information including one or more of a capability of the UE, a type of the UE, or an operating mode of the UE, or any combination thereof, where at least one of the repetition pattern, the first repetition number, or the second repetition number may be based on the UE-specific information.
  • the repetition pattern includes the first repetition number and the second repetition number.
  • receiving the indication may include operations, features, means, or instructions for receiving the indication dynamically via DCI.
  • receiving the indication may include operations, features, means, or instructions for receiving the indication semi-statically via RRC signaling or MAC-CE signaling.
  • a method of wireless communication at a base station may include transmitting an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated in accordance with a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission and transmitting the downlink control channel transmission and the corresponding downlink data channel transmission in accordance with the indication.
  • 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 transmit an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated in accordance with a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission and transmit the downlink control channel transmission and the corresponding downlink data channel transmission in accordance with the indication.
  • the apparatus may include means for transmitting an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated in accordance with a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission and transmitting the downlink control channel transmission and the corresponding downlink data channel transmission in accordance with the indication.
  • a non-transitory computer-readable medium storing code for wireless communication at a base station is described.
  • the code may include instructions executable by a processor to transmit an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated in accordance with a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission and transmit the downlink control channel transmission and the corresponding downlink data channel transmission in accordance with the indication.
  • the indication includes a first value and a second value.
  • the first value may be the first repetition number and the second value may be the second repetition number.
  • the first value may be the first repetition number and the second value may be indicative of a differential between the first repetition number and the second repetition number.
  • transmitting the indication may include operations, features, means, or instructions for transmitting the indication dynamically via DCI.
  • transmitting the indication may include operations, features, means, or instructions for transmitting the indication semi-statically via RRC signaling or MAC-CE signaling.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving UE-specific information including one or more of a capability of the UE, a type of the UE, or an operating mode of the UE, or any combination thereof, and identifying a repetition pattern based on the UE-specific information, where the indication includes the repetition pattern.
  • the repetition pattern includes all downlink control channel repetitions before all downlink data channel repetitions.
  • each repetition of the downlink control channel repetitions may be the same as an initial transmission of the downlink control channel transmission.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for successive repetitions of the downlink control channel repetitions include a same content but lower code rates than an initial transmission of the downlink control channel transmission.
  • each of the downlink control channel repetitions indicates a corresponding one of the downlink data channel repetitions.
  • each of the downlink control channel repetitions indicates a corresponding one of the downlink data channel repetitions and earlier downlink data channel repetitions that precede the corresponding one of the downlink data channel repetitions.
  • the repetition pattern includes a comb-based pattern.
  • the comb-based pattern includes an interleaving of the downlink control channel transmission and the corresponding downlink data channel transmission.
  • the first repetition number may be greater than the second repetition number.
  • the first repetition number may be less than the second repetition number.
  • the repetition pattern includes the first repetition number and the second repetition number.
  • transmitting the indication may include operations, features, means, or instructions for transmitting the indication dynamically via DCI.
  • transmitting the indication may include operations, features, means, or instructions for transmitting the indication semi-statically via RRC signaling or MAC-CE signaling.
  • FIGs. 1 and 2 illustrate examples of wireless communications systems that support joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • FIGs. 3 and 4 illustrate examples of block diagrams in accordance with aspects of the present disclosure.
  • FIGs. 5 through 7 illustrate examples of block diagrams that support joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • FIG. 8 illustrates an example of a process flow that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • FIGs. 9 and 10 show block diagrams of devices that support joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • FIG. 11 shows a block diagram of a user equipment (UE) communications manager that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • UE user equipment
  • FIG. 12 shows a diagram of a system including a device that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • FIGs. 13 and 14 show block diagrams of devices that support joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • FIG. 15 shows a block diagram of a base station communications manager that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • FIG. 16 shows a diagram of a system including a device that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • FIGs. 17 through 21 show flowcharts illustrating methods that support joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • Wireless communications systems may include multiple communication devices such as user equipment (UEs) and base stations, which may provide wireless communication services to the UEs.
  • UEs user equipment
  • base stations may be next-generation NodeBs or giga-NodeBs (either of which may be referred to as a gNB) that may support multiple radio access technologies including fourth generation (4G) systems, such as Long Term Evolution (LTE) systems, as well as fifth generation (5G) systems, which may be referred to as New Radio (NR) systems.
  • 4G fourth generation
  • LTE Long Term Evolution
  • 5G fifth generation
  • NR New Radio
  • the described techniques may be used to configure the UEs to support repetition of various physical channels, such as physical downlink shared channels (PDSCH) to improve reliability of various types of communication.
  • PDSCH physical downlink shared channels
  • the described techniques may be used to configure the UEs to support repetition of other physical channels, such as physical downlink control channels (PDCCH) to extend the reliability of the various types of communication.
  • the described techniques may be used to configure the UEs to support repetition of both PDCCH and PDSCH to improve coverage and reliability of the various types of communication (e.g., control information, data) .
  • the described techniques may be used to configure the UE to receive an indication that both a PDCCH transmission and a corresponding PDSCH transmission are to be repeated.
  • the UE may be configured to receive the indication via dynamically or semi-statically, or both.
  • the communication device may be configured to receive the indication via downlink control information (DCI) , a radio resource control (RRC) message, or a medium access control-control element (MAC-CE) , or any combination thereof.
  • the indication may include multiple separate values.
  • the indication may be an RRC indication with separate elements for PDCCH and PDSCH repetition.
  • the indication may be a DCI message with separate repetition counts, etc.
  • the indication may be a single (e.g., composite) value that conveys information for both the PDCCH and the PDSCH (e.g., a pattern or bitmap, a DCI value that maps to an RRC configuration of both channels, etc.
  • the UE may be configured to determine, based on the indication, a repetition number of expected repetitions of the PDCCH transmission and a repetition number of expected repetitions of the corresponding PDSCH transmission.
  • the UE may identify a repetition pattern from the indication, and thereby may determine the repetition number of expected repetitions of the PDCCH transmission and the repetition number of expected repetitions of the corresponding PDSCH transmission.
  • the repetition pattern may, in some examples, include all PDCCH repetitions before all PDSCH repetitions.
  • the repetition pattern may be a comb-based pattern.
  • the comb-based pattern may include an interleaving of the PDCCH transmission and the corresponding PDSCH transmission.
  • the repetition number of expected repetitions of the PDCCH transmission may be greater than the repetition number of expected repetitions of the corresponding PDSCH transmission.
  • the repetition number of expected repetitions of the PDCCH transmission may be lesser than the repetition number of expected repetitions of the corresponding PDSCH transmission
  • the UE may monitor for the PDCCH transmission or the corresponding PDSCH transmission, or both, in accordance with the repetition number of the PDCCH transmission and the repetition number of the corresponding PDSCH transmission, to receive wireless communications from another communication devices (e.g., a next-generation NodeBs or giga-NodeBs (either of which may be referred to as a gNB) ) .
  • another communication devices e.g., a next-generation NodeBs or giga-NodeBs (either of which may be referred to as a gNB)
  • a next-generation NodeBs or giga-NodeBs either of which may be referred to as a gNB
  • configuring the UE to support joint repetition of control channels (e.g., PDCCH) and data channels (e.g., PDSCH) , among other examples in 5G systems, may support improvements to power consumption, resource usage, coverage enhancement, spectral efficiency, higher data rates and, in some examples, may promote enhanced efficiency for wireless operations, among other benefits.
  • control channels e.g., PDCCH
  • data channels e.g., PDSCH
  • 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 repetition schedules and process flows that illustrate joint repetition of control channels and data channels. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to joint repetition of control channels and data channels.
  • FIG. 1 illustrates an example of a wireless communications system 100 that supports joint repetition of control channels and data channels 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.
  • 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.
  • 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
  • a carrier may also have acquisition signaling or control signaling that coordinates operations for other carriers.
  • a carrier may be associated with a frequency channel (e.g., an evolved universal mobile telecommunication system terrestrial radio access (E-UTRA) absolute radio frequency channel number (EARFCN) ) and may be positioned according to a channel raster for discovery by the UEs 115.
  • E-UTRA evolved universal mobile telecommunication system terrestrial radio access
  • a carrier may be operated in a standalone mode where initial acquisition and connection may be conducted by the UEs 115 via the carrier, or the carrier may be operated in a non-standalone mode where a connection is anchored using a different carrier (e.g., of the same or a different radio access technology) .
  • the communication links 125 shown in the wireless communications system 100 may include uplink transmissions from a UE 115 to a base station 105, or downlink transmissions from a base station 105 to a UE 115.
  • Carriers may carry downlink or uplink communications (e.g., in an FDD mode) or may be configured to carry downlink and uplink communications (e.g., in a TDD mode) .
  • a carrier may be associated with a particular bandwidth of the radio frequency spectrum, and in some examples the carrier bandwidth may be referred to as a “system bandwidth” of the carrier or the wireless communications system 100.
  • the carrier bandwidth may be one of a number of determined bandwidths for carriers of a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz) ) .
  • Devices of the wireless communications system 100 e.g., the base stations 105, the UEs 115, or both
  • the wireless communications system 100 may include base stations 105 or UEs 115 that support simultaneous communications via carriers associated with multiple carrier bandwidths.
  • each served UE 115 may be configured for operating over portions (e.g., a sub-band, a BWP) or all of a carrier bandwidth.
  • 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.
  • One or more numerologies for a carrier may be supported, where a numerology may include a subcarrier spacing ( ⁇ f) and a cyclic prefix.
  • a carrier may be divided into one or more BWPs having the same or different numerologies.
  • a UE 115 may be configured with multiple BWPs.
  • a single BWP for a carrier may be active at a given time and communications for the UE 115 may be restricted to one or more active BWPs.
  • 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.
  • Each base station 105 may provide communication coverage via one or more cells, for example a macro cell, a small cell, a hot spot, or other types of cells, or any combination thereof.
  • the term “cell” may refer to a logical communication entity used for communication with a base station 105 (e.g., over a carrier) and may be associated with an identifier for distinguishing neighboring cells (e.g., a physical cell identifier (PCID) , a virtual cell identifier (VCID) , or others) .
  • a cell may also refer to a geographic coverage area 110 or a portion of a geographic coverage area 110 (e.g., a sector) over which the logical communication entity operates.
  • Such cells may range from smaller areas (e.g., a structure, a subset of structure) to larger areas depending on various factors such as the capabilities of the base station 105.
  • a cell may be or include a building, a subset of a building, or exterior spaces between or overlapping with geographic coverage areas 110, among other examples.
  • a macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by the UEs 115 with service subscriptions with the network provider supporting the macro cell.
  • a small cell may be associated with a lower-powered base station 105, as compared with a macro cell, and a small cell may operate in the same or different (e.g., licensed, unlicensed) frequency bands as macro cells.
  • Small cells may provide unrestricted access to the UEs 115 with service subscriptions with the network provider or may provide restricted access to the UEs 115 having an association with the small cell (e.g., the UEs 115 in a closed subscriber group (CSG) , the UEs 115 associated with users in a home or office) .
  • a base station 105 may support one or multiple cells and may also support communications over the one or more cells using one or multiple component carriers.
  • 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.
  • MTC mobile transmission control
  • 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.
  • the wireless communications system 100 may support synchronous or asynchronous operation.
  • the base stations 105 may have similar frame timings, and transmissions from different base stations 105 may be approximately aligned in time.
  • the base stations 105 may have different frame timings, and transmissions from different base stations 105 may, in some examples, not be aligned in time.
  • the techniques described herein may be used for either synchronous or asynchronous operations.
  • 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 device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol) .
  • D2D device-to-device
  • 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. In other cases, D2D communications are carried out between the UEs 115 without the involvement of a base station 105.
  • 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 connected to the network operators IP services 150.
  • the operators 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 also operate in a super high frequency (SHF) region using frequency bands from 3 GHz to 30 GHz, also known as the centimeter band, or in an extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz) , also known as the millimeter band.
  • SHF super high frequency
  • EHF extremely high frequency
  • the wireless communications system 100 may support millimeter wave (mmW) communications between the UEs 115 and the base stations 105, and EHF antennas of the respective devices may be smaller and more closely spaced than UHF antennas. In some examples, this may facilitate use of antenna arrays within a device.
  • mmW millimeter wave
  • the propagation of EHF transmissions may be subject to even greater atmospheric attenuation and shorter range than SHF or UHF transmissions.
  • the techniques disclosed herein may be employed across transmissions that use one or more different frequency regions, and designated use of bands across these frequency regions may differ by country or regulating body.
  • 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.
  • the base stations 105 or the UEs 115 may use MIMO communications to exploit multipath signal propagation and increase the spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such techniques may be referred to as spatial multiplexing.
  • the multiple signals may, for example, be transmitted by the transmitting device via different antennas or different combinations of antennas. Likewise, the multiple signals may be received by the receiving device via different antennas or different combinations of antennas.
  • Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords) .
  • Different spatial layers may be associated with different antenna ports used for channel measurement and reporting.
  • MIMO techniques include single-user MIMO (SU-MIMO) , where multiple spatial layers are transmitted to the same receiving device, and multiple-user MIMO (MU-MIMO) , where multiple spatial layers are transmitted to multiple devices.
  • SU-MIMO single-user MIMO
  • 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
  • UEs 115 may be configured to support operations to manage or improve directional communications between base stations 105 and UE 115s.
  • the base stations 105 may configure the UEs 115 to support repetition of some physical channels, such as a PDCCH and a PDSCH to improve reliability of the directional communications.
  • the base stations 105 may transmit an indication that both a PDCCH transmission and a corresponding PDSCH transmission are to be repeated.
  • the base stations 105 may transmit the indication dynamically via DCI.
  • the base stations 105 may transmit the indication semi-statically via RRC signaling or MAC-CE signaling.
  • the base stations 105 may receive UE-specific information including one or more of a capability of the UEs 115, a type of the UEs 115, or an operating mode of the UEs 115, or any combination thereof, and identify a repetition pattern based on the UE-specific information, where the indication includes the repetition pattern.
  • the indication may include multiple separate values.
  • the indication may be an RRC indication with separate elements for PDCCH and PDSCH repetition.
  • the indication may be a DCI message with separate repetition counts, etc.
  • the indication may be a single (e.g., composite) value that conveys information for both the PDCCH and the PDSCH (e.g., a pattern or bitmap, a DCI value that maps to an RRC configuration of both channels, etc.
  • the UEs 115 may receive and determine, based on the indication, a first repetition number of expected repetitions of a PDCCH transmission and a second repetition number of expected repetitions of a corresponding PDSCH transmission. In some examples, the UEs 115 may identify the first repetition number and the second repetition number from the indication.
  • the indication may include a first value and a second value. In some examples, the first value may be the first repetition number and the second value may be the second repetition number. In some other examples, the first value may be the first repetition number and the second value may be indicative of a differential between the first repetition number and the second repetition number.
  • the UEs 115 may, in some examples, determine a repetition pattern from the indication, and determine first repetition number and the second repetition number from the repetition pattern.
  • the repetition pattern may include all PDCCH repetitions before all PDSCH repetitions.
  • each repetition of the PDCCH repetitions may be the same as an initial transmission of the PDCCH transmission.
  • successive repetitions of the PDCCH repetitions may include a same content but lower code rates than an initial transmission of the PDCCH transmission.
  • each of the PDCCH repetitions indicates a corresponding one of the PDSCH repetitions.
  • each of the PDCCH repetitions indicates a corresponding one of the PDSCH repetitions and earlier PDSCH repetitions that precede the corresponding one of the PDSCH repetitions.
  • the repetition pattern may include a comb-based pattern, which may include an interleaving of the PDCCH transmission and the corresponding PDSCH transmission.
  • the first repetition number is greater than the second repetition number.
  • the first repetition number may be less than the second repetition number.
  • the UEs 115 may monitor for at least one of the PDCCH transmission or the corresponding PDSCH transmission in accordance with the first repetition number and the second repetition number.
  • the base stations 105 may transmit one or more packets to the UEs 115, which the UEs 115 may receive based on the monitoring.
  • 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.
  • FIG. 2 illustrates an example of a wireless communications system 200 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 a base station 105 and a UE 115 within a geographic coverage area 110.
  • the base station 105 and the UE 115 may be examples of the corresponding devices described with reference to FIG. 1.
  • the wireless communications system 200 may support multiple radio access technologies including 4G systems such as LTE systems, LTE-A systems, or LTE-A Pro systems, and 5G systems which may be referred to as NR systems.
  • the wireless communications system 200 may support improvements to power consumption and, in some examples, may promote enhanced efficiency for high reliability and low latency wireless communication operations, among other benefits.
  • the base station 105 and the UE 115 may be configured with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output communications, or beamforming, or any combination thereof.
  • the antennas of the base station 105 and the UE 115 may be located within one or more antenna arrays or antenna panels, which may support multiple-input multiple-output operations or transmit or receive beamforming.
  • the base station 105 antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower.
  • antennas or antenna arrays associated with the base station 105 may be located in diverse geographic locations.
  • the 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 the UE 115.
  • the UE 115 may have one or more antenna arrays that may support various multiple-input multiple-output or beamforming operations.
  • an antenna panel may support radio frequency beamforming for a signal transmitted via one or more antenna ports.
  • the base station 105 and the UE 115 may thus be configured to support directional communications 205 using the multiple antennas.
  • the UE 115 in the wireless communications system 200, may support operations to preserve resources (for example, time and frequency resources of the wireless communications system 200) , a battery life of the UE 115, among other examples.
  • the UE 115 may be configured to support operations to manage or improve directional communications 205 between the base station 105 and the UE 115.
  • the base station 105 may configure the UE 115 to support repetition of some physical channels, such as a PDSCH to improve reliability of the directional communications 205.
  • the UE 115 may be configured to support repetition of the PDSCH with various redundancy versions for combining and decoding the directional communications 205 (e.g., combining and decoding data carried via the directional communications 205 over multiple repetitions) to improve performance, such as reliability in the wireless communications system 200.
  • the base station 105 may allocate a time resource or a frequency resource, or both, over multiple slots for a repetition of a PDSCH. For example, the base station 105 may allocate a same OFDM symbol or a same subcarrier, or both, for a repetition of a PDSCH. The multiple slots for the repetition of the PDSCH may be consecutive or nonconsecutive.
  • the base station 105 may configure the UE 115 with an indication of the allocated time resource or the frequency resource, or both, via DCI, an RRC message, or a MAC-CE.
  • the indication may be, in some examples, an information element (IE) in one or more of the DCI, the RRC message, or the MAC-CE.
  • the IE may be a pdsch-AggregationFactor.
  • the UE 115 may receive a PDSCH scheduled by a DCI having a specific DCI format (e.g., DCI format 1_1) in a PDCCH.
  • the DCI may be scrambled with a cyclic redundancy check (CRC) .
  • CRC cyclic redundancy check
  • the base station 105 may scramble the CRC with one or more of a cell radio network temporary identifier (C-RNTI) , a modulation and coding scheme (MCS) C-RNTI (MCS-C-RNTI) , a cell-specific RNTI (CS-RNTI) .
  • C-RNTI cell radio network temporary identifier
  • MCS-RNTI modulation and coding scheme
  • the UE 115 may be configured to identify the allocated time resource or the frequency resource, or both, based in part on receiving the scheduled PDSCH according to the specific DCI format.
  • the UE 115 may receive a PDSCH scheduled without a corresponding PDCCH.
  • the PDSCH may be scheduled semi-statically.
  • the base station 105 may configure the UE 115 via semi-statically by providing a configuration (e.g., sps-Config) of the scheduled PDSCH via an RRC message or a MAC-CE.
  • the allocated time resource or the frequency resource, or both may be activated by a specific DCI format.
  • the UE 115 may receive a DCI format 1_1 and may monitor the allocated time resource or frequency resource, or both, to receive the PDSCH.
  • the UE 115 may, in some examples, be configured to determine (or identify) that a transport block associated with a repetition of a PDSCH is also repeated over the allocated time resource or the frequency resource, or both. In other words, the UE 115 may determine that the transport block is repeated within each symbol or subcarrier allocation among each of the configured (e.g., via the pdsch-AggregationFactor) consecutive or nonconsecutive slots.
  • the PDSCH may correspond to a single transmission layer.
  • the UE 115 may be configured to determine that the redundancy version associated with the transport block is null for a PDSCH scheduled without a corresponding PDCCH. In other words, if the scheduled PDSCH is semi-statically configured (e.g., sps-Config) and activated by a specific DCI format, the UE 115 may determine that the redundancy version associated with the transport block is null.
  • FIG. 3 illustrates an example of a block diagram 300 in accordance with aspects of the present disclosure.
  • the block diagram 300 may implement aspects of the wireless communications system 100 described with reference to FIG. 1, respectively.
  • the block diagram 300 may be based on a configuration by a base station 105, and implemented by a UE 115.
  • the block diagram 300 may be applicable to implementations or instances when the UE 115 is configured with repetition of some physical channels, such as a PDSCH to improve reliability of wireless communications (e.g., data) .
  • some physical channels such as a PDSCH
  • block diagram 300 may be applicable to implementations or instances, in 4G systems, when the UE 115 is configured with repetition of other physical channels, such as a machine type communications PDCCH (MPDCCH) , which is an MTC specific channel that carries DCI in a narrowband.
  • MPDCCH machine type communications PDCCH
  • the block diagram 300 may illustrate an LTE-M downlink scheduling timeline, which may include a repetition of one or more physical channels to enhance coverage of a transmission (e.g., improve control information, data coverage) .
  • the block diagram 300 may include an uplink system bandwidth 305, a PDSCH narrowband 310, and an MPDCCH narrowband 315, all which may correspond to time resources (e.g., a symbol, a minislot, a slot, a subframe, a frame) , as well as frequency resources (e.g., subcarriers, carriers) .
  • the time resources may be a subframe that may span 1 ms in length.
  • the uplink system bandwidth 305, the PDSCH narrowband 310, and the MPDCCH narrowband 315 may correspond to an LTE-M downlink scheduling timeline in different downlink narrowbands.
  • the uplink system bandwidth 305 may have a physical uplink control channel (PUCCH) subframe repetition 320
  • the PDSCH narrowband 310 may have a PDSCH subframe repetition 325
  • the MPDCCH narrowband 315 may have a DCI subframe repetition 330.
  • PUCCH physical uplink control channel
  • an MPDCCH carrying a DCI may be repeated over four subframes (i.e., the DCI subframe repetition 330)
  • a PDSCH carrying data may be repeated in eight subframes (i.e., the PDSCH subframe repetition 325)
  • a PUCCH carrying HARQ feedback may be repeated in four subframes (i.e., the PUCCH subframe repetition 320) .
  • a base station 105 may thus transmit, and a UE 115 may receive, an MPDCCH in a single subframe or over multiple subframes.
  • the base station 105 may configure the UE 115 with a number of repetitions of one or more of the physical channels (e.g., PUCCH, PDSCH, MPDCCH) , via higher layer signaling.
  • the base station 105 may use various IEs in RRC messages to configure the number of repetitions of a physical channel (e.g., MPDCCH) depending on an application of the physical channel (e.g., MPDCCH) .
  • the base station 105 may configure the UE 115 with a number of repetitions of one or more of the physical channels using a specific DCI format, such as a DCI format 6-0A or a DCI format 6-0B, or both.
  • the base station 105 may configure the UE 115 with a number of repetitions of one or more of the physical channels using a field (e.g., Number of MPDCCH repetitions) in a specific DCI format.
  • the base station 105 may configure the UE 115 with a number of repetitions of one or more of the physical channels using one or more bits (e.g., two bits) in a field (e.g., Number of MPDCCH repetitions) of a specific DCI format.
  • some wireless communications systems may support repetition of some physical channels, such as a PDSCH to improve reliability of wireless communications (e.g., data) .
  • a PDSCH may improve reliability of wireless communications (e.g., data) .
  • These communications systems may be unable to support repetition of other physical channels, such as a PDCCH. As a result the UE 115 may experience reduced performance.
  • FIG. 4 illustrates an example of a block diagram 400 in accordance with aspects of the present disclosure.
  • the block diagram 400 may implement aspects of the wireless communications system 100 described with reference to FIG. 1, respectively.
  • the block diagram 400 may be based on a configuration by a base station 105, and implemented by a UE 115.
  • the block diagram 400 may be applicable to implementations or instances when the UE 115 is configured with retransmission of some physical channels, such as a PDCCH or a PDSCH, or both, to improve reliability of wireless communications (e.g., data) .
  • some physical channels such as a PDCCH or a PDSCH, or both
  • a base station 105 may transmit, to a UE 115, a PDCCH 405 and a corresponding PDSCH 410 during a transmission time interval (TTI) 420 via downlink directional communications.
  • TTI 420 may span a symbol, a minislot, a slot, a subframe, a frame.
  • the UE 115 may fail to decode the PDCCH 405 and, as a result, the UE 115 may be unable to decode the PDSCH 410 because its location may be unknown to the UE 115.
  • the UE 115 fails to decode the PDCCH 405 carrying control information that may indicate information (e.g., resource location, such as a symbol or subcarrier, or both) about the PDSCH 410, the UE 115 is unable to successfully monitor for and decode the PDSCH 410.
  • the base station 105 may thus not receive HARQ information (e.g., a positive acknowledgment or a negative acknowledgement) from the UE 115.
  • the base station 105 may determine a failure of the UE 115 to decode the PDCCH 405 based on detecting an absence of the HARQ information from the UE 115.
  • the base station 105 may thereby reschedule control information and data by transmitting again both the PDCCH 405 and the PDSCH 410 during a TTI 425, which may also span a symbol, a minislot, a slot, a subframe, a frame.
  • the UE 115 may successfully decode the PDCCH 405 and thus also decode the PDSCH 410.
  • the UE 115 may transmit HARQ information to the base station 105 via PUCCH 415.
  • PUCCH 415 rescheduling control information and data to be transmitted on a rescheduled PDCCH and PDSCH may be effective, the rescheduling causes reduced resource usage because both the control information and data have to be transmitted again and, in some cases, with a lower code rate. Additionally, rescheduling of the control information and data to be transmitted on the rescheduled PDCCH and PDSCH may lead to increased latency for the UE 115.
  • some wireless communications systems may improve the reliability of wireless communications (e.g., control information, data) by supporting joint repetition of various physical channels, such as PDCCH plus PDSCH to improve reliability and reduce latency of the directional communications 205.
  • the base station 105 may transmit, and the UE 115 may receive, a repetition configuration 210 that may be used to configure the UE 115 with channel repetition operations.
  • the base station 105 may configure the UE 115 to support repetition of various physical channels, such as PDSCH to improve reliability of various types of communication (e.g., data) .
  • the wireless communications system 200 may also support repetition of other physical channels, such as PDCCH to further improve the reliability of the various types of communication (e.g., control information, data) in the wireless communications system 200.
  • the base station 105 may transmit, and the UE 115 may receive, an indication (e.g., via the repetition configuration 210) that both a PDCCH transmission and a corresponding PDSCH transmission are to be repeated.
  • the base station 105 may transmit, and the UE 115 may receive, the indication dynamically via DCI.
  • the base station 105 may transmit, and the UE 115 may receive, the indication semi-statically via RRC signaling or MAC-CE signaling.
  • the base station 105 may transmit, and the UE 115 may receive, the indication according to various signaling.
  • the UE 115 may determine, based on the indication, a first repetition number of expected repetitions of the PDCCH transmission and a second repetition number of expected repetitions of the corresponding PDSCH transmission. In some examples, the UE 115 may identify the first repetition number and the second repetition number from the indication.
  • the indication may include a first value and a second value.
  • the first value may be the first repetition number and the second value may be the second repetition number. In some examples, the first value may be the first repetition number and the second value may be indicative of a differential between the first repetition number and the second repetition number.
  • the base station 150 may thus be configured with flexibility on providing an indication of a number of expected repetitions of various physical channels.
  • FIG. 5 illustrates an example of a block diagram 500 that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • the block diagram 500 may implement aspects of the wireless communications system 100 described with reference to FIG. 1, respectively.
  • the block diagram 500 may be based on a configuration by a base station 105, and implemented by a UE 115.
  • the block diagram 500 may be applicable to implementations or instances when the UE 115 is configured to support joint repetition of multiple physical channels, such as PDCCH and PDSCH to improve coverage and reliability of the various types of communication (e.g., control information, data) .
  • the base station 105 may be configured with flexibility on providing, to the UE 115, an indication of a number of expected repetitions of various physical channels.
  • the UE 115 may determine, based on an indication, a first repetition number of expected repetitions of the PDCCH transmission 510 and a second repetition number of expected repetitions of the corresponding PDSCH transmission 515.
  • the indication may include a first value and a second value.
  • the first value may be the first repetition number and the second value may be the second repetition number.
  • the first value indicates two repetitions and the second value may indicate three repetitions. The UE 115 may thus identify that the PDCCH transmission 510 has two repetitions and the corresponding PDSCH transmission 515 has three repetitions.
  • the UE 115 may determine the first repetition number and the second repetition number based on a differential between the first repetition number and the second repetition number.
  • the first value may be the first repetition number and may indicate a single PDCCH transmission 510
  • the second value may be the second repetition number and may indicate that the corresponding PDSCH transmission 515 has two repetitions.
  • the differential between the first repetition number and the second repetition number may have a value one.
  • the first value may be the first repetition number and may indicate multiple PDCCH transmissions 510 (e.g., two repetitions)
  • the second value may be the second repetition number and may indicate a single corresponding PDSCH transmission 515.
  • the differential between the first repetition number and the second repetition number may also have a value one.
  • the UE 115 may be configured to identify a repetition pattern from the indication, and determine the first repetition number and the second repetition number from the repetition pattern.
  • the repetition pattern may have various configurations.
  • FIG. 6 illustrates an example of a block diagram 600 that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • the block diagram 600 may implement aspects of the wireless communications system 100 described with reference to FIG. 1, respectively.
  • the block diagram 600 may be based on a configuration by a base station 105, and implemented by a UE 115.
  • the block diagram 600 may be applicable to implementations or instances when the UE 115 is configured to support joint repetition of multiple physical channels, such as PDCCH and PDSCH to improve coverage and reliability of the various types of communication (e.g., control information, data) .
  • a repetition pattern 605-a may include all repetitions of PDCCH 610 to occur before all repetitions of PDSCH 615.
  • each repetition of a PDCCH repetition may be the same as an initial transmission of a PDSCH transmission.
  • successive repetitions of the PDCCH repetitions may include a same content but lower code rates than an initial transmission of the PDCCH transmission.
  • a repetition pattern 605-b may include that each repetition of the PDCCH 610 indicates a corresponding repetition of the PDSCH 615.
  • a repetition pattern 605-c may include that each repetition of the PDCCH 610 indicates a corresponding repetition of the PDSCH 615 and an earlier repetition of a PDSCH 615 that precedes the corresponding repetition of the PDSCH 615.
  • FIG. 7 illustrates an example of a block diagram 700 that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • the block diagram 700 may implement aspects of the wireless communications system 100 described with reference to FIG. 1, respectively.
  • the block diagram 700 may be based on a configuration by a base station 105, and implemented by a UE 115.
  • the block diagram 700 may be applicable to implementations or instances when the UE 115 is configured to support joint repetition of multiple physical channels, such as PDCCH and PDSCH to improve coverage and reliability of the various types of communication (e.g., control information, data) .
  • the block diagram 700 may illustrate a repetition pattern 705.
  • the repetition pattern 705 may have a comb-based pattern, which may include interleaving of a PDCCH transmission 710 and a corresponding PDSCH transmission 715.
  • the PDCCH transmission 710 and the corresponding PDSCH transmission 715 in the repetition pattern 705 may alternate.
  • each PDCCH transmission 710 may indicate a previous corresponding PDSCH transmission 715.
  • the UE 115 may determine that the first repetition number is greater than the second repetition number. Alternatively, the UE 115 may determine that the first repetition number is less than the second repetition number. In some examples, the first repetition number of expected repetitions of the PDCCH transmission and the second repetition number of expected repetitions of the corresponding PDSCH transmission may be predefined or indicated within a repetition pattern.
  • the UE 115 may transmit, to the base station 105, UE-specific information including one or more of a capability of a UE, a type of the UE, or an operating mode of the UE, or any combination thereof.
  • the base station 105 may identify and select at least one of the repetition pattern, as described herein, including the first repetition number, or the second repetition number based on the UE-specific information.
  • the UE 115 may monitor for at least one of the PDCCH transmission or the corresponding PDSCH transmission in accordance with the first repetition number and the second repetition number, and receive one or more packets based on the monitoring.
  • the operations performed by the base station 105 and the UE 115 may provide improvements to wireless operations in the wireless communications system 200.
  • the operations performed by the base station 105 and the UE 115 may provide benefits and enhancements to the operation of the UE 115. For example, by supporting joint repetition operations, the UE 115 may improve coverage while simultaneously supporting higher reliability and lower latency communications, resulting in enhanced power efficiency and network throughput in the wireless communications system 200.
  • FIG. 8 illustrates an example of a process flow 800 that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • the process flow 800 may implement aspects of the wireless communications system 100 and 200 described with reference to FIGs. 1 and 2, respectively.
  • the process flow 800 may be based on a configuration by a base station 105 or a UE 115, and implemented by the UE 115, for reduced power consumption, improved resource utilization, and may promote low latency for wireless communications, among other benefits.
  • the base station 105 and the UE 115 may be examples of a base station 105 and a UE 115, as described with reference to FIGs. 1 and 2.
  • the operations between the base station 105 and the UE 115 may be transmitted in a different order than the example order shown, or the operations performed by the base station 105 and the UE 115 may be performed in different orders or at different times. Some operations may also be omitted from the process flow 800, and other operations may be added to the process flow 800.
  • the base station 105 may transmit an indication that both a PDCCH transmission and a corresponding PDSCH transmission are to be repeated.
  • the base station 105 may transmit the indication dynamically via DCI.
  • the base station 105 may transmit the indication semi-statically via RRC signaling or MAC-CE signaling.
  • the base station 105 may receive UE-specific information including one or more of a capability of the UE 115, a type of the UE 115, or an operating mode of the UE 115, or any combination thereof, and identify a repetition pattern based on the UE-specific information, where the indication includes the repetition pattern.
  • the UE 115 may receive and determine, based on the indication, a first repetition number of expected repetitions of a PDCCH transmission and a second repetition number of expected repetitions of a corresponding PDSCH transmission. In some examples, the UE 115 may identify the first repetition number and the second repetition number from the indication.
  • the indication may include a first value and a second value. In some examples, the first value may be the first repetition number and the second value may be the second repetition number. In some other examples, the first value may be the first repetition number and the second value may be indicative of a differential between the first repetition number and the second repetition number.
  • the UE 115 may, in some examples, determine a repetition pattern from the indication, and determine first repetition number and the second repetition number from the repetition pattern.
  • the repetition pattern may include all PDCCH repetitions before all PDSCH repetitions.
  • each repetition of the PDCCH repetitions may be the same as an initial transmission of the PDCCH transmission.
  • successive repetitions of the PDCCH repetitions may include a same content but lower code rates than an initial transmission of the PDCCH transmission.
  • each of the PDCCH repetitions indicates a corresponding one of the PDSCH repetitions.
  • each of the PDCCH repetitions indicates a corresponding one of the PDSCH repetitions and earlier PDSCH repetitions that precede the corresponding one of the PDSCH repetitions.
  • the repetition pattern may include a comb-based pattern, which may include an interleaving of the PDCCH transmission and the corresponding PDSCH transmission.
  • the first repetition number is greater than the second repetition number.
  • the first repetition number may be less than the second repetition number.
  • the UE 115 may monitor for at least one of the PDCCH transmission or the corresponding PDSCH transmission in accordance with the first repetition number and the second repetition number.
  • the base station 105 may transmit one or more packets to the UE 115, which the UE 115 may receive based on the monitoring.
  • the operations performed by the base station 105 and the UE 115 as part of, but not limited to, the process flow 800 may provide improvements to UE 115 decoding procedures and repetition operations. Furthermore, the operations performed by the base station 105 and the UE 115 as part of, but not limited to, the process flow 800 may provide benefits and enhancements to the operation of the UE 115. For example, the described operations in the process flow 800 may support reduced power consumption, among other advantages.
  • FIG. 9 shows a block diagram 900 of a device 905 that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • the device 905 may be an example of aspects of a UE 115 as described herein.
  • the device 905 may include a receiver 910, a UE communications manager 915, and a transmitter 920.
  • the device 905 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 910 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 joint repetition of control channels and data channels, etc. ) . Information may be passed on to other components of the device 905.
  • the receiver 910 may be an example of aspects of the transceiver 1220 described with reference to FIG. 12.
  • the receiver 910 may utilize a single antenna or a set of antennas.
  • the UE communications manager 915 may receive an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated, determine, based on the indication, a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission, monitor for at least one of the downlink control channel transmission or the corresponding downlink data channel transmission in accordance with the first repetition number and the second repetition number, and receive one or more packets based on the monitoring.
  • the UE communications manager 915 may be an example of aspects of the UE communications manager 1210 described herein.
  • the UE communications manager 915 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 UE communications manager 915, or its sub-components may be executed by a general-purpose processor, a DSP, an application-specific integrated circuit (ASIC) , a field-programmable gate array (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
  • FPGA field-programmable gate array
  • the UE communications manager 915 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 UE communications manager 915, or its sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure.
  • the UE communications manager 915, 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 920 may transmit signals generated by other components of the device 905.
  • the transmitter 920 may be collocated with a receiver 910 in a transceiver module.
  • the transmitter 920 may be an example of aspects of the transceiver 1220 described with reference to FIG. 12.
  • the transmitter 920 may utilize a single antenna or a set of antennas.
  • FIG. 10 shows a block diagram 1000 of a device 1005 that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • the device 1005 may be an example of aspects of a device 905, or a UE 115 as described herein.
  • the device 1005 may include a receiver 1010, a UE communications manager 1015, and a transmitter 1035.
  • the device 1005 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 1010 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 joint repetition of control channels and data channels, etc. ) . Information may be passed on to other components of the device 1005.
  • the receiver 1010 may be an example of aspects of the transceiver 1220 described with reference to FIG. 12.
  • the receiver 1010 may utilize a single antenna or a set of antennas.
  • the UE communications manager 1015 may be an example of aspects of the UE communications manager 915 as described herein.
  • the UE communications manager 1015 may include an indication component 1020, a repetition component 1025, and a downlink component 1030.
  • the UE communications manager 1015 may be an example of aspects of the UE communications manager 1210 described herein.
  • the indication component 1020 may receive an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated.
  • the repetition component 1025 may determine, based on the indication, a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission.
  • the downlink component 1030 may monitor for at least one of the downlink control channel transmission or the corresponding downlink data channel transmission in accordance with the first repetition number and the second repetition number and receive one or more packets based on the monitoring.
  • the transmitter 1035 may transmit signals generated by other components of the device 1005.
  • the transmitter 1035 may be collocated with a receiver 1010 in a transceiver module.
  • the transmitter 1035 may be an example of aspects of the transceiver 1220 described with reference to FIG. 12.
  • the transmitter 1035 may utilize a single antenna or a set of antennas.
  • FIG. 11 shows a block diagram 1100 of a UE communications manager 1105 that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • the UE communications manager 1105 may be an example of aspects of a UE communications manager 915, a UE communications manager 1015, or a UE communications manager 1210 described herein.
  • the UE communications manager 1105 may include an indication component 1110, a repetition component 1115, a downlink component 1120, a pattern component 1125, and a capability component 1130. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
  • the indication component 1110 may receive an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated. In some examples, the indication component 1110 may receive the indication dynamically via DCI. In some examples, the indication component 1110 may receive the indication semi-statically via RRC signaling or MAC-CE signaling.
  • the repetition component 1115 may determine, based on the indication, a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission. In some examples, the repetition component 1115 may identify the first repetition number and the second repetition number from the indication, where the indication includes a first value and a second value. In some cases, the first value is the first repetition number and the second value is the second repetition number. In some cases, the first value is the first repetition number and the second value is indicative of a differential between the first repetition number and the second repetition number.
  • the downlink component 1120 may monitor for at least one of the downlink control channel transmission or the corresponding downlink data channel transmission in accordance with the first repetition number and the second repetition number. In some examples, the downlink component 1120 may receive one or more packets based on the monitoring.
  • the pattern component 1125 may identify a repetition pattern from the indication. In some examples, the pattern component 1125 may determine the first repetition number and the second repetition number from the repetition pattern. In some examples, the pattern component 1125 may successive repetitions of the downlink control channel repetitions include a same content but lower code rates than an initial transmission of the downlink control channel transmission.
  • the repetition pattern includes all downlink control channel repetitions before all downlink data channel repetitions.
  • each repetition of the downlink control channel repetitions is the same as an initial transmission of the downlink control channel transmission.
  • each of the downlink control channel repetitions indicates a corresponding one of the downlink data channel repetitions.
  • each of the downlink control channel repetitions indicates a corresponding one of the downlink data channel repetitions and earlier downlink data channel repetitions that precede the corresponding one of the downlink data channel repetitions.
  • the repetition pattern includes a comb-based pattern.
  • the comb-based pattern includes an interleaving of the downlink control channel transmission and the corresponding downlink data channel transmission.
  • the first repetition number is greater than the second repetition number. In some cases, the first repetition number is less than the second repetition number.
  • the capability component 1130 may transmit, to a base station, UE-specific information including one or more of a capability of a UE, a type of the UE, or an operating mode of the UE, or any combination thereof, where at least one of the repetition pattern, the first repetition number, or the second repetition number is based on the UE-specific information.
  • the capability component 1130 may receive the indication dynamically via DCI.
  • the capability component 1130 may receive the indication semi-statically via RRC signaling or MAC-CE signaling.
  • the repetition pattern includes the first repetition number and the second repetition number.
  • FIG. 12 shows a diagram of a system 1200 including a device 1205 that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • the device 1205 may be an example of or include the components of device 905, device 1005, or a UE 115 as described herein.
  • the device 1205 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a UE communications manager 1210, an I/O controller 1215, a transceiver 1220, an antenna 1225, memory 1230, and a processor 1240. These components may be in electronic communication via one or more buses (e.g., bus 1245) .
  • buses e.g., bus 1245
  • the UE communications manager 1210 may receive an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated, determine, based on the indication, a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission, monitor for at least one of the downlink control channel transmission or the corresponding downlink data channel transmission in accordance with the first repetition number and the second repetition number, and receive one or more packets based on the monitoring.
  • the UE communications manager 1210 may as described herein be implemented to realize one or more potential advantages.
  • One implementation may allow the device 1205 to save power and increase battery life by communicating with a base station 105 (as shown in FIGs. 1 through 8) more efficiently.
  • the device 1205 may reduce retransmissions of various types of communications (e.g., control information, data) by supporting joint repetition for the various types of communications (e.g., control information, data) .
  • the device 1205 may experience reduced complexity, better throughput by supporting soft combining of the various types of communications (e.g., control information, data) over repetitions.
  • Another implementation may promote higher reliability and lower latency communications at the device 1205 due to supporting joint repetition.
  • the I/O controller 1215 may manage input and output signals for the device 1205.
  • the I/O controller 1215 may also manage peripherals not integrated into the device 1205.
  • the I/O controller 1215 may represent a physical connection or port to an external peripheral.
  • the I/O controller 1215 may utilize an operating system such as or another known operating system.
  • the I/O controller 1215 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device.
  • the I/O controller 1215 may be implemented as part of a processor.
  • a user may interact with the device 1205 via the I/O controller 1215 or via hardware components controlled by the I/O controller 1215.
  • the transceiver 1220 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above.
  • the transceiver 1220 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 1220 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 device 1205 may include a single antenna 1225. However, in some cases, the device 1205 may have more than one antenna 1225, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the memory 1230 may include RAM and ROM.
  • the memory 1230 may store computer-readable, computer-executable code 1235 including instructions that, when executed, cause the processor to perform various functions described herein.
  • the memory 1230 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 code 1235 may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications.
  • the code 1235 may be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code 1235 may not be directly executable by the processor 1240 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • the processor 1240 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 1240 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 1240.
  • the processor 1240 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 1230) to cause the device 1205 to perform various functions (e.g., functions or tasks supporting joint repetition of control channels and data channels) .
  • FIG. 13 shows a block diagram 1300 of a device 1305 that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • the device 1305 may be an example of aspects of a base station 105 as described herein.
  • the device 1305 may include a receiver 1310, a base station communications manager 1315, and a transmitter 1320.
  • the device 1305 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 1310 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 joint repetition of control channels and data channels, etc. ) . Information may be passed on to other components of the device 1305.
  • the receiver 1310 may be an example of aspects of the transceiver 1620 described with reference to FIG. 16.
  • the receiver 1310 may utilize a single antenna or a set of antennas.
  • the base station communications manager 1315 may transmit an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated in accordance with a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission and transmit the downlink control channel transmission and the corresponding downlink data channel transmission in accordance with the indication.
  • the base station communications manager 1315 may be an example of aspects of the base station communications manager 1610 described herein.
  • the base station communications manager 1315 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 base station communications manager 1315, 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 base station communications manager 1315 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 base station communications manager 1315, or its sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure.
  • the base station communications manager 1315, 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 1320 may transmit signals generated by other components of the device 1305.
  • the transmitter 1320 may be collocated with a receiver 1310 in a transceiver module.
  • the transmitter 1320 may be an example of aspects of the transceiver 1620 described with reference to FIG. 16.
  • the transmitter 1320 may utilize a single antenna or a set of antennas.
  • FIG. 14 shows a block diagram 1400 of a device 1405 that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • the device 1405 may be an example of aspects of a device 1305, or a base station 105 as described herein.
  • the device 1405 may include a receiver 1410, a base station communications manager 1415, and a transmitter 1430.
  • the device 1405 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 1410 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 joint repetition of control channels and data channels, etc. ) . Information may be passed on to other components of the device 1405.
  • the receiver 1410 may be an example of aspects of the transceiver 1620 described with reference to FIG. 16.
  • the receiver 1410 may utilize a single antenna or a set of antennas.
  • the base station communications manager 1415 may be an example of aspects of the base station communications manager 1315 as described herein.
  • the base station communications manager 1415 may include an indication component 1420 and a downlink component 1425.
  • the base station communications manager 1415 may be an example of aspects of the base station communications manager 1610 described herein.
  • the indication component 1420 may transmit an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated in accordance with a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission.
  • the downlink component 1425 may transmit the downlink control channel transmission and the corresponding downlink data channel transmission in accordance with the indication.
  • the transmitter 1430 may transmit signals generated by other components of the device 1405.
  • the transmitter 1430 may be collocated with a receiver 1410 in a transceiver module.
  • the transmitter 1430 may be an example of aspects of the transceiver 1620 described with reference to FIG. 16.
  • the transmitter 1430 may utilize a single antenna or a set of antennas.
  • FIG. 15 shows a block diagram 1500 of a base station communications manager 1505 that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • the base station communications manager 1505 may be an example of aspects of a base station communications manager 1315, a base station communications manager 1415, or a base station communications manager 1610 described herein.
  • the base station communications manager 1505 may include an indication component 1510, a downlink component 1515, a capability component 1520, and a pattern component 1525. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
  • the indication component 1510 may transmit an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated in accordance with a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission.
  • the indication component 1510 may transmit the indication dynamically via DCI.
  • the indication component 1510 may transmit the indication semi-statically via RRC signaling or MAC-CE signaling.
  • the indication includes a first value and a second value.
  • the first value is the first repetition number and the second value is the second repetition number.
  • the first value is the first repetition number and the second value is indicative of a differential between the first repetition number and the second repetition number.
  • the downlink component 1515 may transmit the downlink control channel transmission and the corresponding downlink data channel transmission in accordance with the indication.
  • the capability component 1520 may receive UE-specific information including one or more of a capability of the UE, a type of the UE, or an operating mode of the UE, or any combination thereof.
  • the pattern component 1525 may identify a repetition pattern based on the UE-specific information, where the indication includes the repetition pattern. In some examples, the pattern component 1525 may successive repetitions of the downlink control channel repetitions include a same content but lower code rates than an initial transmission of the downlink control channel transmission.
  • the repetition pattern includes all downlink control channel repetitions before all downlink data channel repetitions.
  • each repetition of the downlink control channel repetitions is the same as an initial transmission of the downlink control channel transmission.
  • each of the downlink control channel repetitions indicates a corresponding one of the downlink data channel repetitions.
  • each of the downlink control channel repetitions indicates a corresponding one of the downlink data channel repetitions and earlier downlink data channel repetitions that precede the corresponding one of the downlink data channel repetitions.
  • the repetition pattern includes a comb-based pattern. In some cases, the comb-based pattern includes an interleaving of the downlink control channel transmission and the corresponding downlink data channel transmission. In some cases, the first repetition number is greater than the second repetition number. In some cases, the first repetition number is less than the second repetition number. In some cases, the repetition pattern includes the first repetition number and the second repetition number.
  • FIG. 16 shows a diagram of a system 1600 including a device 1605 that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • the device 1605 may be an example of or include the components of device 1305, device 1405, or a base station 105 as described herein.
  • the device 1605 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a base station communications manager 1610, a network communications manager 1615, a transceiver 1620, an antenna 1625, memory 1630, a processor 1640, and an inter-station communications manager 1645. These components may be in electronic communication via one or more buses (e.g., bus 1650) .
  • buses e.g., bus 1650
  • the base station communications manager 1610 may transmit an indication that both a downlink control channel transmission (e.g. a PDCCH transmission) and a corresponding downlink data channel transmission (e.g., a PDSCH transmission) are to be repeated in accordance with a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission and transmit the downlink control channel transmission and the corresponding downlink data channel transmission in accordance with the indication.
  • a downlink control channel transmission e.g. a PDCCH transmission
  • a corresponding downlink data channel transmission e.g., a PDSCH transmission
  • the network communications manager 1615 may manage communications with the core network (e.g., via one or more wired backhaul links) .
  • the network communications manager 1615 may manage the transfer of data communications for client devices, such as one or more UEs 115.
  • the transceiver 1620 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above.
  • the transceiver 1620 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 1620 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 device 1605 may include a single antenna 1625. However, in some cases, the device 1605 may have more than one antenna 1625, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the memory 1630 may include RAM, ROM, or a combination thereof.
  • the memory 1630 may store computer-readable code 1635 including instructions that, when executed by a processor (e.g., the processor 1640) cause the device to perform various functions described herein.
  • the memory 1630 may contain, among other things, a basic input-output system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • BIOS basic input-output system
  • the code 1635 may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications.
  • the code 1635 may be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code 1635 may not be directly executable by the processor 1640 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • the processor 1640 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 1640 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into processor 1640.
  • the processor 1640 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 1630) to cause the device 1605 to perform various functions (e.g., functions or tasks supporting joint repetition of control channels and data channels) .
  • the inter-station communications manager 1645 may manage communications with other base station 105, and may include a controller or scheduler for controlling communications with UEs 115 in cooperation with other base stations 105. For example, the inter-station communications manager 1645 may coordinate scheduling for transmissions to UEs 115 for various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-station communications manager 1645 may provide an X2 interface within an LTE/LTE-A wireless communication network technology to provide communication between base stations 105.
  • FIG. 17 shows a flowchart illustrating a method 1700 that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • the operations of method 1700 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 1700 may be performed by a UE communications manager as described with reference to FIGs. 9 through 12.
  • 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 an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated.
  • the operations of 1705 may be performed according to the methods described herein. In some examples, aspects of the operations of 1705 may be performed by an indication component as described with reference to FIGs. 9 through 12.
  • the UE may determine, based on the indication, a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission.
  • the operations of 1710 may be performed according to the methods described herein. In some examples, aspects of the operations of 1710 may be performed by a repetition component as described with reference to FIGs. 9 through 12.
  • the UE may monitor for at least one of the downlink control channel transmission or the corresponding downlink data channel transmission in accordance with the first repetition number and the second repetition number.
  • the operations of 1715 may be performed according to the methods described herein. In some examples, aspects of the operations of 1715 may be performed by a downlink component as described with reference to FIGs. 9 through 12.
  • the UE may receive one or more packets based on the monitoring.
  • the operations of 1720 may be performed according to the methods described herein. In some examples, aspects of the operations of 1720 may be performed by a downlink component as described with reference to FIGs. 9 through 12.
  • FIG. 18 shows a flowchart illustrating a method 1800 that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • the operations of method 1800 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 1800 may be performed by a UE communications manager as described with reference to FIGs. 9 through 12.
  • 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 an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated.
  • the operations of 1805 may be performed according to the methods described herein. In some examples, aspects of the operations of 1805 may be performed by an indication component as described with reference to FIGs. 9 through 12.
  • the UE may determine, based on the indication, a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission.
  • the operations of 1810 may be performed according to the methods described herein. In some examples, aspects of the operations of 1810 may be performed by a repetition component as described with reference to FIGs. 9 through 12.
  • the UE may identify the first repetition number and the second repetition number from the indication, where the indication includes a first value and a second value.
  • the operations of 1815 may be performed according to the methods described herein. In some examples, aspects of the operations of 1815 may be performed by a repetition component as described with reference to FIGs. 9 through 12.
  • the UE may monitor for at least one of the downlink control channel transmission or the corresponding downlink data channel transmission in accordance with the first repetition number and the second repetition number.
  • the operations of 1820 may be performed according to the methods described herein. In some examples, aspects of the operations of 1820 may be performed by a downlink component as described with reference to FIGs. 9 through 12.
  • the UE may receive one or more packets based on the monitoring.
  • the operations of 1825 may be performed according to the methods described herein. In some examples, aspects of the operations of 1825 may be performed by a downlink component as described with reference to FIGs. 9 through 12.
  • FIG. 19 shows a flowchart illustrating a method 1900 that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • the operations of method 1900 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 1900 may be performed by a UE communications manager as described with reference to FIGs. 9 through 12.
  • 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 an indication that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated.
  • the operations of 1905 may be performed according to the methods described herein. In some examples, aspects of the operations of 1905 may be performed by an indication component as described with reference to FIGs. 9 through 12.
  • the UE may determine, based on the indication, a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission.
  • the operations of 1910 may be performed according to the methods described herein. In some examples, aspects of the operations of 1910 may be performed by a repetition component as described with reference to FIGs. 9 through 12.
  • the UE may identify a repetition pattern from the indication.
  • the operations of 1915 may be performed according to the methods described herein. In some examples, aspects of the operations of 1915 may be performed by a pattern component as described with reference to FIGs. 9 through 12.
  • the UE may determine the first repetition number and the second repetition number from the repetition pattern.
  • the operations of 1920 may be performed according to the methods described herein. In some examples, aspects of the operations of 1920 may be performed by a pattern component as described with reference to FIGs. 9 through 12.
  • the UE may monitor for at least one of the downlink control channel transmission or the corresponding downlink data channel transmission in accordance with the first repetition number and the second repetition number.
  • the operations of 1925 may be performed according to the methods described herein. In some examples, aspects of the operations of 1925 may be performed by a downlink component as described with reference to FIGs. 9 through 12.
  • the UE may receive one or more packets based on the monitoring.
  • the operations of 1930 may be performed according to the methods described herein. In some examples, aspects of the operations of 1930 may be performed by a downlink component as described with reference to FIGs. 9 through 12.
  • FIG. 20 shows a flowchart illustrating a method 2000 that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • the operations of method 2000 may be implemented by a base station 105 or its components as described herein.
  • the operations of method 2000 may be performed by a base station communications manager as described with reference to FIGs. 13 through 16.
  • a base station may execute a set of instructions to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, a base station may perform aspects of the functions described below using special-purpose hardware.
  • the base station may transmit an indication dynamically, via DCI, that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated in accordance with a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission.
  • the operations of 2005 may be performed according to the methods described herein. In some examples, aspects of the operations of 2005 may be performed by an indication component as described with reference to FIGs. 13 through 16.
  • the base station may transmit the downlink control channel transmission and the corresponding downlink data channel transmission in accordance with the indication.
  • the operations of 2010 may be performed according to the methods described herein. In some examples, aspects of the operations of 2010 may be performed by a downlink component as described with reference to FIGs. 13 through 16.
  • FIG. 21 shows a flowchart illustrating a method 2100 that supports joint repetition of control channels and data channels in accordance with aspects of the present disclosure.
  • the operations of method 2100 may be implemented by a base station 105 or its components as described herein.
  • the operations of method 2100 may be performed by a base station communications manager as described with reference to FIGs. 13 through 16.
  • a base station may execute a set of instructions to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, a base station may perform aspects of the functions described below using special-purpose hardware.
  • the base station may transmit an indication semi-statically, via RRC signaling or MAC-CE signaling, that both a downlink control channel transmission and a corresponding downlink data channel transmission are to be repeated in accordance with a first repetition number of expected repetitions of the downlink control channel transmission and a second repetition number of expected repetitions of the corresponding downlink data channel transmission.
  • the operations of 2105 may be performed according to the methods described herein. In some examples, aspects of the operations of 2105 may be performed by an indication component as described with reference to FIGs. 13 through 16.
  • the base station may transmit the downlink control channel transmission and the corresponding downlink data channel transmission in accordance with the indication.
  • the operations of 2110 may be performed according to the methods described herein. In some examples, aspects of the operations of 2110 may be performed by a downlink component as described with reference to FIGs. 13 through 16.
  • 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 digital signal processor (DSP) and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) .
  • DSP digital signal processor
  • 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 random-access memory (RAM) , read-only memory (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. Also, any connection is properly termed a computer-readable medium.
  • RAM random-access memory
  • ROM read-only memory
  • EEPROM electrically erasable programmable ROM
  • flash memory compact disk (CD) ROM or other optical disk storage
  • CD compact disk
  • 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,
  • 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.

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Abstract

L'invention concerne des procédés, des systèmes et des dispositifs de communication sans fil. Un dispositif de communication, également appelé équipement utilisateur (UE), peut effectuer les opérations consistant à : recevoir une indication selon laquelle une transmission d'un canal de commande de liaison descendante (par exemple une transmission d'un canal physique de commande de liaison descendante (PDCCH)) et une transmission d'un canal de données de liaison descendante correspondante (par exemple une transmission d'un canal physique partagé de liaison descendante (PDSCH)) doivent être répétées ; sur la base de l'indication, déterminer un premier nombre de répétitions escomptées de la transmission du canal de commande de liaison descendante et un second nombre de répétitions escomptées de la transmission du canal de données de liaison descendante correspondante ; surveiller la transmission du canal de commande de liaison descendante et/ou la transmission du canal de données de liaison descendante correspondante en fonction du premier nombre de répétitions et du second nombre de répétitions ; et recevoir un ou plusieurs paquets sur la base de la surveillance.
PCT/CN2020/074335 2020-02-05 2020-02-05 Répétition conjointe de canaux de commande et de canaux de données WO2021155509A1 (fr)

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EP3277022A1 (fr) * 2015-03-25 2018-01-31 Sharp Kabushiki Kaisha Dispositif terminal, dispositif station de base, procédé de communication, et circuit intégré
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EP3277022A1 (fr) * 2015-03-25 2018-01-31 Sharp Kabushiki Kaisha Dispositif terminal, dispositif station de base, procédé de communication, et circuit intégré
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