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WO2018170916A1 - Indication de format pucch et attribution de ressources - Google Patents

Indication de format pucch et attribution de ressources Download PDF

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Publication number
WO2018170916A1
WO2018170916A1 PCT/CN2017/078163 CN2017078163W WO2018170916A1 WO 2018170916 A1 WO2018170916 A1 WO 2018170916A1 CN 2017078163 W CN2017078163 W CN 2017078163W WO 2018170916 A1 WO2018170916 A1 WO 2018170916A1
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WO
WIPO (PCT)
Prior art keywords
control channel
pucch
characteristic
resource
pucch format
Prior art date
Application number
PCT/CN2017/078163
Other languages
English (en)
Inventor
Hongchao Li
Original Assignee
Motorola Mobility Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Mobility Llc filed Critical Motorola Mobility Llc
Priority to PCT/CN2017/078163 priority Critical patent/WO2018170916A1/fr
Publication of WO2018170916A1 publication Critical patent/WO2018170916A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the subject matter disclosed herein relates generally to wireless communications and more particularly relates to providing a UE with PUCCH information using an implicit indicator.
  • 3GPP Third Generation Partnership Project
  • ACK Positive-Acknowledgment
  • AMF Access and Mobility Management Function
  • BPSK Binary Phase Shift Keying
  • CA Clear Channel Assessment
  • CCA Control Channel Element
  • CCE Clear Channel Assessment
  • CP Cyclic Prefix
  • CSI Channel State Information
  • SCS Common Search Space
  • DFT-S Discrete Fourier Transform Spread
  • DCI Downlink Control Information
  • DwPTS Discrete Fourier Transform Spread OFDM
  • eCCA Enhanced Clear Channel Assessment
  • eMBB Evolved Node B
  • HARQ-ACK may represent collectively the Positive Acknowledge ( “ACK” ) and the Negative Acknowledge ( “NAK” ) .
  • ACK means that a TB is correctly received while NAK means a TB is erroneously received.
  • a radio interface may support at least two types of PUCCH in terms of duration are supported, referred to herein as short PUCCH and long PUCCH, respectively.
  • PUCCH duration type multiple of lengths and payloads are possibly supported.
  • 1 or 2OFDM symbols may be employed to carry between one and a few tens of bits.
  • long PUCCH more than 4 symbols are used to carry between one and a few hundreds of bits.
  • a UE needs to know which type of PUCCH format to use when sending UCI.
  • the 5G (e.g., New Radio) radio interface support greater diversity of performance requirement and slot length than conventional LTE.
  • the UCI feedback (ACK/NACK/CSI) needs to be sent swiftly with short duration PUCCH to fulfil low latency requirement.
  • the UCI feedback may use long duration PUCCH to carry large payload (to support CA/DC, MIMO) and/or to achieve enhanced coverage. Accordingly, the semi-static PUCCH format indication of conventional LTE may not be sufficient to flexibly support the diversified scenarios.
  • Methods for providing a UE with PUCCH information using an implicit indicator are disclosed. Apparatuses and systems also perform the functions of the methods. The methods may also be embodied in one or more computer program products comprising executable code.
  • a method for providing a UE with PUCCH information using an implicit indicator receiving a downlink ( “DL” ) control signal from a base unit, the DL control signal comprising downlink control information ( “DCI” ) on a DL control channel resource monitoring set includes identifying characteristics of the DL control channel. The method further includes determining at least one of a physical uplink control channel ( “PUCCH” ) format and a PUCCH resource set from the identified characteristics.
  • the identified characteristics implicitly indicate the at least one of a PUCCH format and a PUCCH resource set using a predetermined association.
  • Another method for providing a UE with PUCCH information using an implicit indicator includes determining a PUCCH format and/or a PUCCH resource set for a UE.
  • the method includes identifying at least one characteristic of a DL control channel.
  • the DL control channel characteristic (s) correspond to the determined PUCCH format and/or PUCCH resource set.
  • the method further includes transmitting a DL control signal to the UE, the DL control signal containing DCI on a DL control channel resource monitoring set.
  • identified characteristic (s) implicitly indicates PUCCH format and/or PUCCH resource set using a predetermined association.
  • Figure 1 is a schematic block diagram illustrating one embodiment of a wireless communication system for providing a UE with PUCCH information using an implicit indicator
  • Figure 2 illustrates one embodiment of a network for providing a UE with PUCCH information using an implicit indicator
  • Figure 3 illustrates one embodiment of a procedure for implicitly indicating a PUCCH format
  • Figure 4 illustrates one embodiment of a procedure for implicitly indicting a PUCCH resource set
  • Figure 5 illustrates one embodiment of a procedure for implicitly indicting a PUCCH resource set which is associated with a PUCCH format
  • Figure 6 illustrates another embodiment of a procedure for indicating a PUCCH resource allocation using a combination of explicit signaling and implicit association
  • Figure 7 is a schematic block diagram illustrating one embodiment of an apparatus for providing a UE with PUCCH information using an implicit indicator
  • Figure 8 is a schematic block diagram illustrating another embodiment of an apparatus for providing a UE with PUCCH information using an implicit indicator
  • Figure 9 is a schematic flow chart diagram illustrating one embodiment of a method for providing a UE with PUCCH information using an implicit indicator.
  • Figure 10 is a schematic flow chart diagram illustrating another embodiment of a method for providing a UE with PUCCH information using an implicit indicator.
  • embodiments may be embodied as a system, apparatus, method, or program product. Accordingly, embodiments may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, micro-code, etc. ) or an embodiment combining software and hardware aspects.
  • the disclosed embodiments may be implemented as a hardware circuit comprising custom very-large-scale integration ( “VLSI” ) circuits or gate arrays, off-the-shelf semiconductors such as logic chips, transistors, or other discrete components.
  • VLSI very-large-scale integration
  • the disclosed embodiments may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices, or the like.
  • the disclosed embodiments may include one or more physical or logical blocks of executable code which may, for instance, be organized as an object, procedure, or function.
  • embodiments may take the form of a program product embodied in one or more computer readable storage devices storing machine readable code, computer readable code, and/or program code, referred hereafter as code.
  • the storage devices may be tangible, non-transitory, and/or non-transmission.
  • the storage devices may not embody signals. In a certain embodiment, the storage devices only employ signals for accessing code.
  • the computer readable medium may be a computer readable storage medium.
  • the computer readable storage medium may be a storage device storing the code.
  • the storage device may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, holographic, micromechanical, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing.
  • a storage device More specific examples (a non-exhaustive list) of the storage device would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random-access memory ( “RAM” ) , a read-only memory ( “ROM” ) , an erasable programmable read-only memory ( “EPROM” or Flash memory) , a portable compact disc read-only memory (CD-ROM” ) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
  • a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
  • the code may also be stored in a storage device that can direct a computer, other programmable data processing apparatus, or other devices to function in a particular manner, such that the instructions stored in the storage device produce an article of manufacture including instructions which implement the function/act specified in the schematic flowchart diagrams and/or schematic block diagrams.
  • the code may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus, or other devices to produce a computer implemented process such that the code which execute on the computer or other programmable apparatus provide processes for implementing the functions/acts specified in the schematic flowchart diagrams and/or schematic block diagram.
  • each block in the schematic flowchart diagrams and/or schematic block diagrams may represent a module, segment, or portion of code, which includes one or more executable instructions of the code for implementing the specified logical function (s) .
  • the discloses methods, apparatus, and systems use implicit indications in the DL control channel combined with predetermined associations to PUCCH features to indicate PUCCH information to a UE with minimal overhead.
  • the predetermined associations may be fixed, defined in a communication standard used by the network, configured by RRC signaling, or the like.
  • a useable PUCCH format and/or a usable PUCCH resource set is indicated to the UE using implicit indications in the DL control channel.
  • Examples of implicit indications in the DL control channel include, but are not limited to, a set index of the DL control channel resource monitoring set, a DL control channel monitoring time domain interval, a monitored slot size (e.g., slot size granularity) , and a monitored control channel duration. Additionally, the UE may use a combination of explicit signaling and the implicit indications to identify a specific PUCCH resource allocation (e.g., a specific slot, specific OFDM symbols within a slot, specific PRBs, and specific codes and/or sequences to use) .
  • a specific PUCCH resource allocation e.g., a specific slot, specific OFDM symbols within a slot, specific PRBs, and specific codes and/or sequences to use
  • Figure 1 depicts a wireless communication system 100 for providing a UE with PUCCH information using an implicit indicator, according to embodiments of the disclosure.
  • the wireless communication system 100 includes remote units 105, cellular base units 110, and communication links 115. Even though a specific number of remote units 105, cellular base units 110, and communication links 115 are depicted in Figure 1, one of skill in the art will recognize that any number of remote units 105, cellular base units 110, and communication links 115 may be included in the wireless communication system 100.
  • the wireless communication system 100 is compliant with the 5G system specified in the 3GPP specifications. More generally, however, the wireless communication system 100 may implement some other open or proprietary communication network, for example, LTE-A or WiMAX, among other networks.
  • LTE-A or WiMAX wireless communication system architecture or protocol.
  • the remote units 105 may include computing devices, such as desktop computers, laptop computers, personal digital assistants ( “PDAs” ) , tablet computers, smart phones, smart televisions (e.g., televisions connected to the Internet) , smart appliances (e.g., appliances connected to the Internet) , set-top boxes, game consoles, security systems (including security cameras) , vehicle on-board computers, network devices (e.g., routers, switches, modems) , or the like.
  • the remote units 105 include wearable devices, such as smart watches, fitness bands, optical head-mounted displays, or the like.
  • the remote units 105 may be referred to as subscriber units, mobiles, mobile stations, users, terminals, mobile terminals, fixed terminals, subscriber stations, user equipment ( “UE” ) , user terminals, a device, or by other terminology used in the art.
  • the remote units 105 may communicate directly with one or more of the cellular base units 110 via uplink ( “UL” ) and downlink ( “DL” ) communication signals.
  • the UL and DL communication signals may be carried over the communication links 115.
  • the cellular base units 110 may be distributed over a geographic region.
  • a cellular base unit 110 may also be referred to as an access terminal, a base, a base station, a Node-B, an eNB, a gNB, a Home Node-B, a relay node, a device, or by any other terminology used in the art.
  • the cellular base units 110 are generally part of a radio access network ( “RAN” ) that may include one or more controllers communicably coupled to one or more corresponding cellular base units 110.
  • the RAN is generally communicably coupled to one or more core networks, which in turn may be coupled to other networks, like the Internet and public switched telephone networks, among other networks. These and other elements of radio access and core networks are not illustrated but are well known generally by those having ordinary skill in the art.
  • the cellular base units 110 connect to the mobile core network 130 via the RAN.
  • the cellular base units 110 may serve a number of remote units 105 within a serving area, for example, a cell or a cell sector via a wireless communication link.
  • the cellular base units 110 may communicate directly with one or more of the remote units 105 via communication signals.
  • the cellular base units 110 transmit downlink ( “DL” ) communication signals to serve the remote units 105 in the time, frequency, and/or spatial domain.
  • the DL communication signals may be carried over the communication links 115.
  • the communication links 115 may be any suitable carrier in licensed or unlicensed radio spectrum.
  • the communication links 115 facilitate communication between one or more of the remote units 105 and/or one or more of the cellular base units 110.
  • the mobile core network 130 is a 5G core ( “5GC” ) or the evolved packet core ( “EPC” ) , which may be coupled to other data network 125, like the Internet and private data networks, among other data networks.
  • Each mobile core network 130 belongs to a single public land mobile network ( “PLMN” ) .
  • PLMN public land mobile network
  • the mobile core network 130 includes several network functions ( “NFs” ) .
  • the mobile core network 130 includes an access and mobility management function (“AMF” ) 135, a session management function ( “SMF” ) 140, and a user plane function ( “UPF” ) 145.
  • AMF access and mobility management function
  • SMF session management function
  • UPF user plane function
  • the AMF 135 provides services such as UE registration, UE connection management, and UE mobility management.
  • the SMF 140 manages the data sessions of the remote units 105, such as a PDU session.
  • the UPF 145 provides user plane (e.g., data) services to the remote units 105.
  • a data connection between the remote unit 105 and a data network 125 is managed by a UPF 145.
  • FIG. 2 depicts a network 200 used for providing a UE with PUCCH information using an implicit indicator, according to embodiments of the disclosure.
  • the network 200 includes a UE 205 and gNB 210.
  • the network 200 depicts a simplified embodiment of the wireless communication system 100.
  • the UE 205 may be one embodiment of the UE 205 105, while the gNB 210 may be one embodiment of the base unit 110.
  • the gNB 210 may be a gNB or 5G base station. Although only one UE 205 is depicted, in other embodiments the gNB 210 may serve a plurality of UEs 205.
  • the gNB 210 sends a DL control signal 215 to the UE 205, for example over a wireless communication link 115.
  • the DL control signal 215 contains at least DCI on a DL control channel resource monitoring set 225 within the DL control channel 220.
  • the DL control channel includes a plurality of DL control channel resource monitoring sets 225. While a specific number of DL control channel resource monitoring sets 225 are shown, in other embodiments the DL control channel 220 may include more or fewer DL control channel resource monitoring sets 225.
  • the gNB 210 determines a PUCCH format and/or a PUCCH resource set for the UE 205 and implicitly indicates the PUCCH format and/or PUCCH resource set using DL control channel characteristics mapped to the PUCCH format and/or PUCCH resource set using a predetermined association. In certain embodiments, the gNB 210 transmits the predetermined association to the UE 205 via radio resource control ( “RRC” ) signaling.
  • RRC radio resource control
  • the UE 205 receives the DL control signal 215 from the gNB 210 identifies characteristics of the DL control channel.
  • the UE 205 may identify one or more of a set index of the DL control channel resource monitoring set, set index of the DL control channel resource monitoring set, a DL control channel monitoring time domain interval, a monitored slot size (e.g., a slot size granularity) , and a monitored control channel duration.
  • the UE 205 further determines PUCCH format and/or PUCCH resource set from the identified characteristics.
  • the identified characteristics implicitly indicate PUCCH format and/or PUCCH resource set.
  • the UE 205 identifies a first characteristic (e.g., a set index of the DL control channel resource monitoring set, a monitoring time domain interval, a monitored slot (or mini-slot) size, or a monitored control channel duration) and determines a PUCCH format to be used to transmit uplink control information ( “UCI” ) from the first characteristic using the predetermined association.
  • a first characteristic e.g., a set index of the DL control channel resource monitoring set, a monitoring time domain interval, a monitored slot (or mini-slot) size, or a monitored control channel duration
  • a PUCCH format to be used to transmit uplink control information ( “UCI” ) from the first characteristic using the predetermined association.
  • the UE 205 identifies a second characteristic different than the first characteristic and determines a PUCCH resource set to be used to transmit UCI from the second characteristic using the predetermined association.
  • the UE 205 further decodes the DCI and determines a PUCCH resource allocation (e.g., from within the determined PUCCH resource set) from implicit and/or explicit indications.
  • the UE 205 may identify one or more of: a set index of the DL control channel resource monitoring set, a search space index within the DL control channel resource monitoring set, an aggregation level of the decoded DCI, a dynamic indication field within the decoded DCI, a lowest CCE index used by the decoded DCI, and a PUCCH resource set configuration in RRC signaling in order to determine the PUCCH resource allocation for transmitting the UCI.
  • the gNB 210 implicitly indicates to the UE 205 a PUCCH format, PUCCH resource set using the DL control channel characteristics.
  • the gNB 210 may further indicate a PUCCH resource allocation using implicit indications or a combination of implicit and explicit indications.
  • the DL control channel characteristics may be used implicitly indicates one or more of: a PUCCH duration in terms of number of OFDM/DFT-S-OFDM symbols, a frequency bandwidth, a payload size, frame structure numerology, and a waveform.
  • Figure 3 depicts a procedure 300 used to implicitly indicate a PUCCH format, according to embodiments of the disclosure.
  • the procedure 300 involves the UE 205 receiving a DL control signal and identifying implicit PUCCH format indications from the DL control channel 220.
  • the DL control channel 220 includes a first DL control channel resource monitoring set 305 having a first monitoring time domain interval and a first monitored slot size.
  • the first DL control channel resource monitoring set 305 has a monitoring time domain interval of every OFDM symbol (e.g., a “symbol-level” interval size) .
  • the first DL control channel resource monitoring set 305 also has a monitored slot size of 1 OFDM symbol.
  • the first DL control channel resource monitoring set 305 has additional characteristics including, but not limited to, a set index of the DL control channel resource monitoring set, set index of the DL control channel resource monitoring set, and a monitored control channel duration.
  • the DL control channel 220 also includes a second DL control channel resource monitoring set 310.
  • the second DL control channel resource monitoring set 310 has a second monitoring time domain interval of every 7 OFDM symbols (e.g., a “slot-level” interval size, where 1 slot equals 7 OFDM symbols) .
  • the second DL control channel resource monitoring set 310 also has a monitored slot size of 7 OFDM symbols with 2 symbols of DL control channel resource.
  • the second DL control channel resource monitoring set 310 also has additional characteristics including, but not limited to, a set index of the DL control channel resource monitoring set, set index of the DL control channel resource monitoring set, and a monitored control channel duration.
  • the first or second DL control channel resource monitoring set 305-310 may have a “mini-slot level” interval size, where the mini-slot is a predetermined number of OFDM symbols greater than 1 and less than 7.
  • the mini-slot may be defined by RRC signaling.
  • the UE 205 is assigned to a certain DL control channel resource monitoring set, e.g., one of the first DL control channel resource monitoring set 305 and second DL control channel resource monitoring set 310.
  • the UE 205 receives the DL control channel 220 and analyzes its DL control channel resource monitoring set.
  • the UE 205 then identifies the relevant DL control channel characteristics to determine a PUCCH attribute (here, a PUCCH format or component thereof) through a predetermined, implicit association.
  • a PUCCH attribute here, a PUCCH format or component thereof
  • the association between DL control channel characteristic and PUCCH attribute may be predefined or configured by RRC signaling. In one embodiment, the association is fixed. In another embodiment, the association is dynamically configured, e.g., by RRC signaling.
  • the UE 205 stores the implicit association in memory and refers to it when determining the implicitly indicated PUCCH attribute.
  • the relevant characteristic may be the DL control channel resource monitoring set index, wherein a usable PUCCH format is implicitly indicated by the DL control channel resource monitoring set index.
  • the DL control channel resource monitoring set index may implicitly indicate a PUCCH format component, such as a PUCCH duration in terms of number of OFDM/DFT-S-OFDM symbols (e.g., short vs long duration) , a frequency bandwidth, a payload size, frame structure numerology, and a waveform to be used.
  • the short PUCCH format and the long PUCCH format have predefined duration lengths (e.g., as configured via RRC signaling) .
  • the UE 205 determines, through a first implicit association/indication 315, that the corresponding UCI is to be carried by short PUCCH format. This is due to the DL control channel resource monitoring set index of the first DL control channel resource monitoring set 305 being associated with the short PUCCH format.
  • the UE 205 determines, through a second implicit association/indication 320, that the corresponding UCI is to be carried by long PUCCH format. This is due to the DL control channel resource monitoring set index of the second DL control channel resource monitoring set 310 being associated with the long PUCCH format.
  • the relevant characteristic may be the DL control channel monitoring time domain interval, wherein a usable PUCCH format is implicitly indicated by the DL control channel monitoring time domain interval.
  • the DL control channel monitoring time domain interval may implicitly indicate a PUCCH format component, such as a PUCCH duration in terms of number of OFDM/DFT-S-OFDM symbols (e.g., short vs long duration) , a frequency bandwidth, a payload size, frame structure numerology, and a waveform to be used.
  • the UE 205 determines, through a first implicit association/indication 315, that the corresponding UCI is to be carried by short PUCCH format. This is due to the DL control channel monitoring time domain interval of the first DL control channel resource monitoring set 305 being associated with the short PUCCH format.
  • the UE 205 determines, through a second implicit association/indication 320, that the corresponding UCI is to be carried by long PUCCH format. This is due to the DL control channel monitoring time domain interval of the second DL control channel resource monitoring set 310 being associated with the long PUCCH format.
  • Figure 4 depicts a procedure 400 used to implicitly indicting a PUCCH resource set, according to embodiments of the disclosure.
  • the procedure 400 involves the UE 205 receiving a DL control signal and identifying implicit PUCCH resource set indications from the DL control channel 220.
  • the DL control channel 220 includes the first DL control channel resource monitoring set 305 and the second DL control channel resource monitoring set 310 described above.
  • the UE 205 is assigned to a certain DL control channel resource monitoring set, e.g., one of the first DL control channel resource monitoring set 305 and second DL control channel resource monitoring set 310.
  • the UE 205 receives the DL control channel 220 and analyzes its DL control channel resource monitoring set.
  • the UE 205 then identifies the relevant DL control channel characteristics to determine a PUCCH attribute (here, a PUCCH resource set) through a predetermined, implicit association.
  • a PUCCH attribute here, a PUCCH resource set
  • the association between DL control channel characteristic and PUCCH resource set may be predefined or configured by RRC signaling. In one embodiment, the association is fixed. In another embodiment, the association is dynamically configured, e.g., by RRC signaling.
  • the UE 205 stores the implicit association in memory and refers to it when determining the implicitly indicated PUCCH resource set.
  • the relevant characteristic may be the DL control channel resource monitoring set index, wherein a usable PUCCH resource set is implicitly indicated by the DL control channel resource monitoring set index.
  • the implicitly indicated PUCCH resource set is further associated with a specific PUCCH format, as discussed in further detail below.
  • the UE 205 determines, through a first implicit association/indication 405, that the corresponding UCI is to be sent on a first PUCCH resource set. This is due to the DL control channel resource monitoring set index of the first DL control channel resource monitoring set 305 being associated with the first PUCCH resource set (e.g., as previously configured using RRC signaling) .
  • the UE 205 receives the second DL control channel resource monitoring set 310, then the UE 205 determines, through a second implicit association/indication 410, that the corresponding UCI is to be sent on a second PUCCH resource set. This is due to the DL control channel resource monitoring set index of the second DL control channel resource monitoring set 310 being associated with the second PUCCH resource set (e.g., as previously configured using RRC signaling) .
  • the relevant characteristic may be the DL control channel monitoring time domain interval, wherein a usable PUCCH resource set is implicitly indicated by the DL control channel monitoring time domain interval.
  • the implicitly indicated PUCCH resource set may be further associated with a specific PUCCH format.
  • the UE 205 determines, through a first implicit association/indication 315, that the corresponding UCI is to be sent on a first PUCCH resource set. This is due to the DL control channel monitoring time domain interval of the first DL control channel resource monitoring set 305 being associated with the first PUCCH resource set (e.g., as previously configured using RRC signaling) .
  • the UE 205 receives the second DL control channel resource monitoring set 310, then the UE 205 determines, through a second implicit association/indication 320, that the corresponding UCI is to be sent using a second PUCCH resource set. This is due to the DL control channel monitoring time domain interval of the second DL control channel resource monitoring set 310 being associated with the second PUCCH resource set (e.g., as previously configured using RRC signaling) .
  • Figure 5 depicts a procedure 500 used to implicitly indicting a PUCCH resource set which is associated with a PUCCH format, according to embodiments of the disclosure.
  • the procedure 500 involves the UE 205 receiving a DL control signal and identifying implicit PUCCH resource set indications from the DL control channel 220.
  • each PUCCH resource set is associated with a specific PUCCH format.
  • the DL control channel 220 includes the first DL control channel resource monitoring set 305 and the second DL control channel resource monitoring set 310 described above.
  • the UE 205 is assigned to a certain DL control channel resource monitoring set, e.g., one of the first DL control channel resource monitoring set 305 and second DL control channel resource monitoring set 310.
  • the UE 205 receives the DL control channel 220 and analyzes its DL control channel resource monitoring set.
  • the UE 205 then identifies the relevant DL control channel characteristics to determine a PUCCH attribute (here, a PUCCH resource set) through a predetermined, implicit association.
  • the predetermined association indicates a PUCCH format (or a component thereof) that corresponds to the PUCCH resource set.
  • each PUCCH resource set is associated with a specific PUCCH format.
  • an additional DL control channel characteristic may be used to identify the PUCCH format for the implicitly indicated PUCCH resource set.
  • the association between DL control channel characteristic and PUCCH resource set and/or PUCCH format may be predefined or configured by RRC signaling. Additionally, the association between a PUCCH resource set and a specific PUCCH format may be predefined or configured by RRC signaling. In one embodiment, these associations are fixed. In another embodiment, these associations are dynamically configured, e.g., by RRC signaling.
  • the UE 205 stores the implicit association in memory and refers to it when determining the implicitly indicated PUCCH resource set.
  • the relevant characteristic may be the DL control channel resource monitoring set index, wherein a usable PUCCH resource set is implicitly indicated by the DL control channel resource monitoring set index.
  • the implicitly indicated PUCCH resource set is further associated with a specific PUCCH format, for example, as configured using RRC signaling.
  • the UE 205 determines, through a first implicit association/indication 505, that the corresponding UCI is to be sent on a first PUCCH resource set. This is due to the DL control channel resource monitoring set index of the first DL control channel resource monitoring set 305 being associated with the first PUCCH resource set (e.g., as previously configured using RRC signaling) . Further, the UE 205 recognizes that the corresponding UCI is to be carried by short PUCCH format on first PUCCH resource set. This is due to the first PUCCH resource set being associated with the short PUCCH format (e.g., as previously configured using RRC signaling) .
  • the UE 205 determines, through a second implicit association/indication 410, that the corresponding UCI is to be sent on a second PUCCH resource set. This is due to the DL control channel resource monitoring set index of the second DL control channel resource monitoring set 310 being associated with the second PUCCH resource set (e.g., as previously configured using RRC signaling) . Further, the UE 205 recognizes that the corresponding UCI is to be carried bylong PUCCH format on second PUCCH resource set. This is due to the second PUCCH resource set being associated with the long PUCCH format (e.g., as previously configured using RRC signaling) .
  • the relevant characteristic may be the DL control channel monitoring time domain interval, wherein a usable PUCCH resource set is implicitly indicated by the DL control channel monitoring time domain interval.
  • the implicitly indicated PUCCH resource set is further associated with a specific PUCCH format, for example, as configured using RRC signaling.
  • the UE 205 determines, through a first implicit association/indication 315, that the corresponding UCI is to be sent on a first PUCCH resource set. This is due to the DL control channel monitoring time domain interval of the first DL control channel resource monitoring set 305 being associated with the first PUCCH resource set (e.g., as previously configured using RRC signaling) . Further, the UE 205 recognizes that the corresponding UCI is to be carried by short PUCCH format on first PUCCH resource set. This is due to the first PUCCH resource set being associated with the short PUCCH format (e.g., as previously configured using RRC signaling) .
  • the UE 205 determines, through a second implicit association/indication 320, that the corresponding UCI is to be sent using a second PUCCH resource set. This is due to the DL control channel monitoring time domain interval of the second DL control channel resource monitoring set 310 being associated with the second PUCCH resource set (e.g., as previously configured using RRC signaling) . Further, the UE 205 recognizes that the corresponding UCI is to be carried by long PUCCH format on second PUCCH resource set. This is due to the second PUCCH resource set being associated with the long PUCCH format (e.g., as previously configured using RRC signaling) .
  • a first relevant characteristic is the DL control channel resource monitoring set index, wherein a usable PUCCH resource set is implicitly indicated by the DL control channel resource monitoring set index.
  • a second relevant characteristic may be the DL control channel monitoring time domain interval, wherein a usable PUCCH format is implicitly indicated by the DL control channel monitoring time domain interval.
  • the DL control channel monitoring time domain interval may implicitly indicate a PUCCH format component, such as a PUCCH duration in terms of number of OFDM/DFT-S-OFDM symbols (e.g., short vs long duration) , a frequency bandwidth, a payload size, frame structure numerology, and a waveform to be used.
  • the UE 205 determines, through a first implicit association/indication 505, that the corresponding UCI is to be sent on a first PUCCH resource set. This is due to the DL control channel resource monitoring set index of the first DL control channel resource monitoring set 305 being associated with the first PUCCH resource set (e.g., as previously configured using RRC signaling) . Further, the UE 205 determines, through the first implicit association/indication 505, that the corresponding UCI is to be carried by short PUCCH format. This is due to the DL control channel resource monitoring set index of the first DL control channel resource monitoring set 305 being associated with the short PUCCH format.
  • the UE 205 determines, through a second implicit association/indication 510, that the corresponding UCI is to be sent on a second PUCCH resource set. This is due to the DL control channel resource monitoring set index of the second DL control channel resource monitoring set 310 being associated with the second PUCCH resource set (e.g., as previously configured using RRC signaling) . Additionally, the UE 205 determines, through the second implicit association/indication 510, that the corresponding UCI is to be carried by long PUCCH format. This is due to the DL control channel resource monitoring set index of the second DL control channel resource monitoring set 310 being associated with the long PUCCH format.
  • Figure 6 depicts a procedure 600 used to indicating a PUCCH resource allocation using a combination of explicit signaling and implicit association, according to embodiments of the disclosure.
  • the procedure 600 involves the UE 205 receiving a DL control signal and identifying a PUCCH resource allocation, using a combination of explicit signaling and implicit association, from the DL control channel 220.
  • the DL control channel 220 includes the first DL control channel resource monitoring set 305 and the second DL control channel resource monitoring set 310 described above.
  • the UE 205 is assigned to a certain DL control channel resource monitoring set, e.g., one of the first DL control channel resource monitoring set 305 and second DL control channel resource monitoring set 310.
  • the UE 205 receives the DL control channel 220 and analyzes its DL control channel resource monitoring set.
  • the UE 205 then identifies the relevant DL control channel characteristics to determine a PUCCH attribute (here, a PUCCH resource set 615) through a predetermined, implicit association.
  • a PUCCH attribute here, a PUCCH resource set 615
  • the association between DL control channel characteristic and PUCCH resource set may be predefined or configured by RRC signaling. In one embodiment, the association is fixed. In another embodiment, the association is dynamically configured, e.g., by RRC signaling.
  • the UE 205 stored the implicit association in memory and refers to it when determining the implicitly indicated PUCCH resource set 615.
  • the UE 205 proceeds to decode its DCI (step 620) and determines a specific PUCCH resource allocation using a combination of explicit and implicit signaling.
  • the specific PUCCH resource allocation is determined using a combination of factors including one or more of the DL control channel resource monitoring set index, a search space index within the DL control channel resource monitoring set, the aggregation level of the decoded DCI, the lowest CCE index used by the decoded DCI, and the value of a dynamic indication field within the decoded DCI.
  • a PUCCH resource set configuration in the RRC signaling may be an additional factor considered by the UE 205.
  • the combination of factors points to a specific resource allocation within the identified PUCCH resource set.
  • the relevant characteristic may be the DL control channel resource monitoring set index, wherein a usable PUCCH resource set is implicitly indicated by the DL control channel resource monitoring set index.
  • the implicitly indicated PUCCH resource set is further associated with a specific PUCCH format or may be implicitly indicated by a second DL control channel characteristic, as discussed above.
  • the UE 205 determines, through a first implicit association/indication 405, that the corresponding UCI is to be sent on specific PUCCH resource set, such as a first PUCCH resource set in the example of Figure 4. This is due to the DL control channel resource monitoring set index of the first DL control channel resource monitoring set 305 being associated with, e.g., the first PUCCH resource set. Additionally, the UE 205 uses a combination of factors, as discussed above, to identify a specific PUCCH resource allocation within the specific resource set.
  • the UE 205 determines, through a second implicit association/indication 410, that the corresponding UCI is to be sent on specific PUCCH resource set, such as a first PUCCH resource set in the example of Figure 4. This is due to the DL control channel resource monitoring set index of the second DL control channel resource monitoring set 310 being associated with, e.g., the second PUCCH resource set. Additionally, the UE 205 uses a combination of factors, as discussed above, to identify a specific PUCCH resource allocation within the specific resource set.
  • the relevant characteristic may be the DL control channel monitoring time domain interval, wherein a usable PUCCH resource set is implicitly indicated by the DL control channel monitoring time domain interval.
  • the implicitly indicated PUCCH resource set may be further associated with a specific PUCCH format or may be implicitly indicated by a second DL control channel characteristic.
  • the UE 205 determines, through a first implicit association/indication 315, that the corresponding UCI is to be sent on specific PUCCH resource set, such as a first PUCCH resource set in the example of Figure 4. This is due to the DL control channel resource monitoring set index of the first DL control channel resource monitoring set 305 being associated with, e.g., the first PUCCH resource set. Additionally, the UE 205 uses a combination of factors, as discussed above, to identify a specific PUCCH resource allocation within the specific resource set.
  • the UE 205 determines, through a second implicit association/indication 320, that the corresponding UCI is to be sent on specific PUCCH resource set, such as a second PUCCH resource set in the example of Figure 4. This is due to the DL control channel resource monitoring set index of the second DL control channel resource monitoring set 310 being associated with, e.g., the second PUCCH resource set. Additionally, the UE 205 uses a combination of factors, as discussed above, to identify a specific PUCCH resource allocation within the specific resource set.
  • Figure 7 depicts one embodiment of a remote apparatus 700 that may be used for providing a UE with PUCCH information using an implicit indicator, according to embodiments of the disclosure.
  • the remote apparatus 700 may be one embodiment of the remote unit 105 and/or UE 205, described above.
  • the remote apparatus 700 may include a controller 705, a memory 710, an input device 715, an output device 720, a transceiver 725 for communicating with one or more base units 110.
  • the transceiver 725 may include a transmitter 730 and a receiver 735.
  • the transceiver 725 may also support one or more network interfaces 740, such as the Uu interface used to communicate with a gNB.
  • the input device 715 and the output device 720 are combined into a single device, such as a touchscreen.
  • the remote apparatus 700 may not include any input device 715 and/or output device 720.
  • the controller 705, in one embodiment, may include any known controller capable of executing computer-readable instructions and/or capable of performing logical operations.
  • the controller 705 may be a microcontroller, a microprocessor, a central processing unit ( “CPU” ) , a graphics processing unit ( “GPU” ) , an auxiliary processing unit, a field programmable gate array ( “FPGA” ) , or similar programmable controller.
  • the controller 705 executes instructions stored in the memory 710 to perform the methods and routines described herein.
  • the controller 705 is communicatively coupled to the memory 710, the input device 715, the output device 720, and the transceiver 725.
  • the receiver 735 receives a DL control signal from a base unit.
  • the DL control signal includes DCI on a DL control channel resource monitoring set.
  • the controller 705 identifies characteristics of the DL control channel. From the identified characteristics, the controller 705 determines a PUCCH format and/or a PUCCH resource set.
  • the DL control channel characteristics implicitly indicate the PUCCH format and/or PUCCH resource set using a predetermined association.
  • the identified characteristics of the DL control channel implicitly indicate one or more of: a PUCCH duration in terms of number of OFDM/DFT-S-OFDM symbols, a frequency bandwidth, a payload size, frame structure numerology, and a waveform.
  • the receiver 735 receives the predetermined association via radio resource control ( “RRC” ) signaling.
  • RRC radio resource control
  • the controller 705 identifies characteristics of the DL control channel by identifying a first characteristic selected from: a set index of the DL control channel resource monitoring set, a DL control channel monitoring time domain interval, a monitored slot (or mini-slot) size, and a monitored control channel duration.
  • the controller 705 uses the predetermined association to determine at least a PUCCH format for UCI transmission from the first characteristic.
  • the PUCCH format to be used is one of a PUCCH format with a set of short durations and a PUCCH format with a set of long durations.
  • the exact duration length of the short duration PUCCH and/or long duration PUCCH may be predetermined, for example configured by RRC signaling.
  • the controller 705 further identifies a second characteristic different than the first characteristic.
  • the second characteristic is also selected from: the set index of the DL control channel resource monitoring set, the DL control channel monitoring time domain interval, the monitored slot (or mini-slot) size, and a monitored control channel duration. Additionally, the controller 705 uses the predetermined association to identify a PUCCH resource set for UCI transmission from the second characteristic.
  • the controller 705 identifies the first characteristic of the DL control channel and uses the predetermined association to identify a PUCCH resource set for UCI transmission from the first characteristic.
  • the first characteristic may be one of: a set index of the DL control channel resource monitoring set, a DL control channel monitoring time domain interval, a monitored slot size (e.g., slot size granularity) , and a monitored control channel duration.
  • the predetermined association further indicates a PUCCH format to be used with the PUCCH resource set, for example a set of short duration PUCCH formats or a set of long duration PUCCH formats associated with the PUCCH resource set.
  • the controller 705 decodes the DCI and determines a PUCCH resource allocation (e.g., from within the determined PUCCH resource set) from implicit and/or explicit indications.
  • the controller 705 may identify one or more of: a set index of the DL control channel resource monitoring set, a search space index within the DL control channel resource monitoring set, an aggregation level of the decoded DCI, a dynamic indication field within the decoded DCI, a lowest CCE index used by the decoded DCI, and a PUCCH resource set configuration in RRC signaling in order to determine the PUCCH resource allocation for transmitting the UCI.
  • the memory 710 in one embodiment, is a computer readable storage medium.
  • the memory 710 includes volatile computer storage media.
  • the memory 710 may include a RAM, including dynamic RAM ( “DRAM” ) , synchronous dynamic RAM ( “SDRAM” ) , and/or static RAM ( “SRAM” ) .
  • the memory 710 includes non-volatile computer storage media.
  • the memory 710 may include a hard disk drive, a flash memory, or any other suitable non-volatile computer storage device.
  • the memory 710 includes both volatile and non-volatile computer storage media.
  • the memory 710 stores data relating to providing a UE with PUCCH information using an implicit indicator.
  • the memory may store PUCCH format associations, PUCCH resource set associations, and/or PUCCH resource allocation associations.
  • the memory 710 also stores program code and related data, such as an operating system or other controller algorithms operating on the remote unit 105 and one or more software applications.
  • the input device 715 may include any known computer input device including a touch panel, a button, a keyboard, a stylus, a microphone, or the like.
  • the input device 715 may be integrated with the output device 720, for example, as a touchscreen or similar touch-sensitive display.
  • the input device 715 includes two or more different devices, such as a keyboard and a touch panel.
  • the input device 715 may include a camera for capturing images or otherwise inputting visual data.
  • the output device 720 may include any known electronically controllable display or display device.
  • the output device 720 may be designed to output visual, audible, and/or haptic signals.
  • the output device 720 includes an electronic display capable of outputting visual data to a user.
  • the output device 720 may include, but is not limited to, an LCD display, an LED display, an OLED display, a projector, or similar display device capable of outputting images, text, or the like to a user.
  • the output device 720 includes one or more speakers for producing sound.
  • the output device 720 may produce an audible alert or notification (e.g., a beep or chime) .
  • the output device 720 includes one or more haptic devices for producing vibrations, motion, or other haptic feedback.
  • all or portions of the output device 720 may be integrated with the input device 715.
  • the input device 715 and output device 720 may form a touchscreen or similar touch-sensitive display.
  • the output device 720 may be located near the input device 715.
  • the transceiver 725 communicates with base units 110 of a mobile communication network.
  • the transceiver 725 may include one or more transmitters 730 and one or more receivers 735.
  • the transceiver 725 may support one or more the network interface 735 for communicating with the base unit 110.
  • FIG. 8 depicts one embodiment of a base station apparatus 800 that may be used for providing a UE with PUCCH information using an implicit indicator, according to embodiments of the disclosure.
  • the base station apparatus 800 may be one embodiment of the base unit 110 and/or gNB 210, described above.
  • the base station apparatus 800 may include a controller 805, a memory 810, an input device 815, an output device 820, a transceiver 825 for communicating with one or more remote units 105 and/or a mobile core network 130.
  • the transceiver 825 may include a transmitter 830 and a receiver 835.
  • the transceiver 825 may also support one or more network interface, such as the Uu interface, N2 interface, N3 interface, and/or other network interfaces suitable for communication with a remote unit and/or core network.
  • the input device 815 and the output device 820 are combined into a single device, such as a touchscreen.
  • the base station apparatus 800 may not include any input device 815 and/or output device 820.
  • the controller 805, in one embodiment, may include any known controller capable of executing computer-readable instructions and/or capable of performing logical operations.
  • the controller 805 may be a microcontroller, a microprocessor, a central processing unit ( “CPU” ) , a graphics processing unit ( “GPU” ) , an auxiliary processing unit, a field programmable gate array ( “FPGA” ) , or similar programmable controller.
  • the controller 805 executes instructions stored in the memory 810 to perform the methods and routines described herein.
  • the controller 805 is communicatively coupled to the memory 810, the input device 815, the output device 820, and the transceiver 825.
  • the controller 805 determines a PUCCH format and/or a PUCCH resource set for a UE.
  • the controller 805 identifies at least one characteristic of a DL control channel.
  • the DL control channel characteristic (s) correspond to the determined PUCCH format and/or PUCCH resource set.
  • the controller 805 further controls the transmitter 830 to transmit a DL control signal to the UE, the DL control signal containing DCI on a DL control channel resource monitoring set.
  • identified characteristic (s) implicitly indicates PUCCH format and/or PUCCH resource set using a predetermined association.
  • the identified characteristics of the DL control channel implicitly indicate one or more of: a PUCCH duration in terms of number of OFDM/DFT-S-OFDM symbols, a frequency bandwidth, a payload size, frame structure numerology, and a waveform.
  • the controller 805 controls the transmitter 830 to send the predetermined association via radio resource control ( “RRC” ) signaling.
  • RRC radio resource control
  • the controller 805 identifies the at least one characteristic of the DL control channel by identifying a first characteristic selected from: a set index of the DL control channel resource monitoring set, a DL control channel monitoring time domain interval, a monitored slot (or mini slot) size, and a monitored control channel duration.
  • the first characteristic corresponding to a PUCCH format (to be used by the UE to transmit UCI) , according to the predetermined association.
  • the PUCCH format to be used by the UE is one of a PUCCH format with a set of short durations and a PUCCH format with a set of long durations.
  • the exact duration length of the short duration PUCCH and/or long duration PUCCH may be predetermined, for example configured by RRC signaling.
  • the controller 805 also identifies a second DL control channel characteristic different than the first characteristic.
  • the second characteristic also may be selected from: a set index of the DL control channel resource monitoring set, a DL control channel monitoring time domain interval, a monitored slot size (e.g., slot size granularity) , and a monitored control channel duration, the second characteristic corresponding to a PUCCH resource set to be used by the UE to transmit UCI.
  • the controller 805 identifies the first characteristic of the DL control channel that corresponds to a PUCCH resource set to be used by the UE to transmit UCI.
  • the first characteristic may be one of: a set index of the DL control channel resource monitoring set, a DL control channel monitoring time domain interval, a monitored slot size, and a monitored control channel duration.
  • the predetermined association further indicates a PUCCH format to be used with the PUCCH resource set, for example a set of short duration PUCCH formats or a set of long duration PUCCH formats associated with the PUCCH resource set.
  • the controller 805 implicitly indicates a PUCCH resource allocation to the UE from within the PUCCH resource set using one or more of: a set index of the DL control channel resource monitoring set, a search space index within the DL control channel resource monitoring set, an aggregation level of the DCI, a dynamic indication field within the DCI, a lowest CCE index used by the DCI, and a PUCCH resource set configuration in RRC signaling.
  • the memory 810 in one embodiment, is a computer readable storage medium.
  • the memory 810 includes volatile computer storage media.
  • the memory 810 may include a RAM, including dynamic RAM ( “DRAM” ) , synchronous dynamic RAM ( “SDRAM” ) , and/or static RAM ( “SRAM” ) .
  • the memory 810 includes non-volatile computer storage media.
  • the memory 810 may include a hard disk drive, a flash memory, or any other suitable non-volatile computer storage device.
  • the memory 810 includes both volatile and non-volatile computer storage media.
  • the memory 810 stores data relating to providing a UE with PUCCH information using an implicit indicator.
  • the memory may store PUCCH format associations, PUCCH resource set associations, and/or PUCCH resource allocation associations.
  • the memory 810 also stores program code and related data, such as an operating system or other controller algorithms operating on the remote unit 105 and one or more software applications.
  • the input device 815 may include any known computer input device including a touch panel, a button, a keyboard, a stylus, a microphone, or the like.
  • the input device 815 may be integrated with the output device 820, for example, as a touchscreen or similar touch-sensitive display.
  • the input device 815 includes two or more different devices, such as a keyboard and a touch panel.
  • the input device 815 may include a camera for capturing images or otherwise inputting visual data.
  • the output device 820 may include any known electronically controllable display or display device.
  • the output device 820 may be designed to output visual, audible, and/or haptic signals.
  • the output device 820 includes an electronic display capable of outputting visual data to a user.
  • the output device 820 may include, but is not limited to, an LCD display, an LED display, an OLED display, a projector, or similar display device capable of outputting images, text, or the like to a user.
  • the output device 820 includes one or more speakers for producing sound.
  • the output device 820 may produce an audible alert or notification (e.g., a beep or chime) .
  • the output device 820 includes one or more haptic devices for producing vibrations, motion, or other haptic feedback.
  • all or portions of the output device 820 may be integrated with the input device 815.
  • the input device 815 and output device 820 may form a touchscreen or similar touch-sensitive display. In other embodiments, the output device 820 may be located near the input device 815.
  • the transceiver 825 communicates with remote unit within a mobile communication network.
  • the transceiver 825 may also communicate with a core network, such as the mobile core network 130.
  • the transceiver 825 may include one or more transmitters 830 and one or more receivers 835.
  • the transceiver 825 may supports one or more the network interface 840 for communicating with remote units 105 and the mobile core network 130.
  • Figure 9 is a schematic flow chart diagram illustrating one embodiment of a method 900 for providing a UE with PUCCH information using an implicit indicator, according to embodiments of the disclosure.
  • the method 900 is performed by a remote unit, such as the remote unit 105, UE 205, and/or the remote apparatus 700, described above.
  • the method 900 may be performed by a processor executing program code, for example, a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, a FPGA, or the like.
  • the method 900 begins and receives 905 a downlink ( “DL” ) control signal from a base unit, the DL control signal containing downlink control information ( “DCI” ) on a DL control channel resource monitoring set.
  • DL downlink
  • DCI downlink control information
  • the method 900 includes identifying 910 characteristics of the DL control channel.
  • identifying 910 characteristics of the DL control channel includes identifying a first characteristic selected from: a set index of the DL control channel resource monitoring set, a DL control channel monitoring time domain interval, a monitored slot size, and a monitored control channel duration.
  • identifying 910 characteristics of the DL control channel resource monitoring set further includes identifying a second characteristic different than the first characteristic.
  • the second characteristic may be selected from: a set index of the DL control channel resource monitoring set, a DL control channel monitoring time domain interval, a monitored slot size, and a monitored control channel duration.
  • the method 900 further includes determining 915 a PUCCH format and/or a PUCCH resource set from the identified characteristics.
  • the identified characteristics implicitly indicate PUCCH format and/or PUCCH resource set using a predetermined association.
  • determining 915 the PUCCH format and/or PUCCH resource set from the identified characteristics includes determining a PUCCH format to be used to transmit UCI from the first characteristic using the predetermined association.
  • the PUCCH format to be used is one of a PUCCH format with a set of short durations and a PUCCH format with a set of long durations.
  • the exact duration length of the short duration PUCCH and/or long duration PUCCH may be predetermined, for example configured by RRC signaling.
  • the identified characteristics of the DL control channel implicitly indicate one or more of: a PUCCH duration in terms of number of OFDM/DFT-S-OFDM symbols, a frequency bandwidth, a payload size, frame structure numerology, and a waveform.
  • the method 900 includes receiving the predetermined association via RRC signaling prior to receiving the DL control signal.
  • determining 915 the PUCCH format and/or PUCCH resource set from the identified characteristics includes determining a PUCCH resource set to be used to transmit UCI from the second characteristic using the predetermined association. In other embodiments, determining 915 the PUCCH format and/or PUCCH resource set from the identified characteristics includes determining a PUCCH resource set to be used to transmit UCI from the first characteristic using the predetermined association.
  • the predetermined association may further indicate a PUCCH format to be used with the PUCCH resource set, the PUCCH format indicating one of a set of short duration PUCCH formats and a set of long duration PUCCH formats.
  • determining 915 the PUCCH format and/or PUCCH resource set from the identified characteristics further includes decoding the DCI and determining a PUCCH resource allocation (e.g., from within the determined PUCCH resource set) from implicit and/or explicit indications.
  • determining the PUCCH resource allocation may include identifying one or more of: a set index of the DL control channel resource monitoring set, a search space index within the DL control channel resource monitoring set, an aggregation level of the decoded DCI, a dynamic indication field within the decoded DCI, a lowest CCE index used by the decoded DCI, and a PUCCH resource set configuration in RRC signaling, in order to determine the PUCCH resource allocation for transmitting the UCI.
  • the method 900 ends.
  • Figure 10 is a schematic flow chart diagram illustrating one embodiment of a method 1000 for providing a UE with PUCCH information using an implicit indicator, according to embodiments of the disclosure.
  • the method 1000 is performed by a base unit, such as the base unit 110, the gNB 210, and or the base station apparatus 800.
  • the method 1000 may be performed by a processor executing program code, for example, a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, a FPGA, or the like.
  • the method 1000 begins and determines 1005 at least one of a PUCCH format and a PUCCH resource set for a UE.
  • the method 1000 includes identifying 1010 at least one characteristic of a DL control channel.
  • the DL control channel characteristic (s) correspond to the determined PUCCH format and/or PUCCH resource set.
  • at least one identified characteristic of the DL control channel implicitly indicates one or more of: a PUCCH duration in terms of number of OFDM/DFT-S-OFDM symbols, a frequency bandwidth, a payload size, frame structure numerology, and a waveform.
  • identifying 1010 at least one characteristic of the DL control channel includes identifying a first characteristic selected from: a set index of the DL control channel resource monitoring set, a DL control channel monitoring time domain interval, a monitored slot size, and a monitored control channel duration.
  • the first characteristic corresponds to a PUCCH format to be used by the UE to transmit UCI.
  • the PUCCH format to be used is one of a PUCCH format with a set of short durations and a PUCCH format with a set of long durations.
  • the exact duration length of the short duration PUCCH and/or long duration PUCCH may be predetermined, for example configured by RRC signaling.
  • the first characteristic corresponds to a PUCCH resource set to be used by the UE to transmit UCI.
  • the predetermined association may indicate a PUCCH format to be used with the PUCCH resource set, the PUCCH format indicating one of a set of short duration PUCCH formats and a set of long duration PUCCH formats.
  • identifying 1010 at least one characteristic of the DL control channel resource monitoring set further includes identifying a second characteristic different than the first characteristic.
  • the second characteristic may be selected from: a set index of the DL control channel resource monitoring set, a DL control channel monitoring time domain interval, a monitored slot size, and a monitored control channel duration.
  • the second characteristic corresponds to a PUCCH resource set to be used by the UE to transmit UCI.
  • the DL control channel implicitly indicates a PUCCH resource allocation to the UE from within the PUCCH resource set using one or more of: a set index of the DL control channel resource monitoring set, a search space index within the DL control channel resource monitoring set, an aggregation level of a DCI, a dynamic indication field within the DCI, a lowest CCE index used by the DCI, and a PUCCH resource set configuration in RRC signaling.
  • the method 1000 includes transmitting 1015 a DL control signal to the UE, the DL control signal containing the DCI on a DL control channel resource monitoring set.
  • the at least one identified characteristic implicitly indicates PUCCH format and/or PUCCH resource set using a predetermined association.
  • the method 1000 may also include transmitting the predetermined association to the UE via RRC signaling. The method 1000 ends.

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Abstract

L'invention concerne des appareils, des procédés et des systèmes pour fournir à un UE des informations de PUCCH à l'aide d'un indicateur implicite. Un appareil (700) comprend un récepteur (735) et un dispositif de commande (705). Le récepteur (735) reçoit (905) un signal de commande de DL (215) en provenance d'une unité de base (110). Selon la description, le signal de commande de DL (215) comprend des DCI sur un ensemble de surveillance de ressources de canal de commande de DL. Le dispositif de commande (705) identifie (910) des caractéristiques du canal de commande de DL (220). Le dispositif de commande (705) détermine (915) un format PUCCH et/ou un ensemble de ressources PUCCH à partir des caractéristiques identifiées. Selon la description, les caractéristiques du canal de commande de DL (220) indiquent implicitement le format PUCCH et/ou l'ensemble de ressources PUCCH à l'aide d'une association prédéterminée.
PCT/CN2017/078163 2017-03-24 2017-03-24 Indication de format pucch et attribution de ressources WO2018170916A1 (fr)

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