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WO2018171645A1 - Procédé de configuration de canal de commande de liaison montante physique, station de base, et équipement d'utilisateur - Google Patents

Procédé de configuration de canal de commande de liaison montante physique, station de base, et équipement d'utilisateur Download PDF

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Publication number
WO2018171645A1
WO2018171645A1 PCT/CN2018/079905 CN2018079905W WO2018171645A1 WO 2018171645 A1 WO2018171645 A1 WO 2018171645A1 CN 2018079905 W CN2018079905 W CN 2018079905W WO 2018171645 A1 WO2018171645 A1 WO 2018171645A1
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WIPO (PCT)
Prior art keywords
repeating unit
uplink control
symbols
control channel
physical uplink
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PCT/CN2018/079905
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English (en)
Chinese (zh)
Inventor
苟伟
毕峰
郝鹏
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of wireless communications technologies, and in particular, to a physical uplink control channel configuration method, a base station, and a user equipment.
  • 5G NR New Radio
  • 3GPP 3rd Generation Partnership
  • eMBB Enhanced Mobile BroadBand
  • URLLC Ultra-Reliable and Low Latency Communications
  • mMTC Massive Machine Type Communications
  • eMBB emphasizes high peak transmission rate, low latency requirements, and medium reliability requirements
  • URLLC emphasizes low latency and High reliability transmission
  • mMTC emphasizes a large number of terminals, which has a high connection density and requires a larger transmission coverage, and has almost no requirement for delay.
  • the slot includes at least one of a downlink portion, a guard interval (GAP), and an uplink portion.
  • the downlink part includes downlink control information (including downlink authorization information and/or uplink grant information) and downlink data
  • the uplink part includes uplink data and a long/short uplink control area.
  • the structure of a typical downlink slot includes: 1 downlink control information, downlink data, GAP, short uplink control region; 2 downlink data, GAP, short uplink control region; 3 downlink control information, downlink data; 4 downlink data.
  • the structure of a typical uplink slot includes: 1 downlink control information, GAP, uplink data, short uplink control region; 2 uplink data, short uplink control region; 3 downlink control, GAP, uplink data; 4 uplink data.
  • the uplink control channel is divided into a short uplink control channel (short PUCCH) and a long uplink control channel (long PUCCH).
  • the short uplink control channel is used for user equipment (User Equipment, UE) in the vicinity of the cell center to send timely Acknowledgement/Negative Acknowledgement (ACK/NACK) feedback or other Channel State Information (CSI).
  • CSI Channel State Information
  • ACK/NACK Acknowledgement/Negative Acknowledgement
  • CSI Channel State Information
  • OFDM symbols at the end of the slot eg 1 or 2 OFDM symbols at the end of the downstream slot; or 1 or 2 OFDM symbols at the end of the upstream slot
  • the long uplink control channel is used for the UE at the cell edge, which occupies more OFDM symbols to enhance the transmission coverage of the long uplink control channel.
  • the long uplink control channel does not give a specific design, only some simple conclusions, such as the long uplink control channel supports a load range of 1 bit to several hundred bits, and the long uplink control channel can span Slot. How to design a long uplink control channel has not yet proposed an effective solution.
  • the embodiments of the present invention provide a physical uplink control channel configuration method, a base station, and a user equipment, which can meet the requirement that the NR medium long uplink control channel needs to be cross-slot and a large range of load changes.
  • the embodiment of the invention provides a physical uplink control channel configuration method, including:
  • the base station is configured for the user equipment, or pre-arranges the parameters of the physical uplink control channel with the user equipment, where the parameter includes the time domain size and the number of the repeating unit, and the repeating unit is configured to send the physical uplink control channel to the user equipment;
  • the base station If the base station configures a parameter of the physical uplink control channel, the base station sends the parameter to the user equipment.
  • the embodiment of the invention further provides a physical uplink control channel configuration method, including:
  • the user equipment receives the parameter of the physical uplink control channel sent by the base station, or the parameter of the physical uplink control channel is previously agreed by the base station and the user equipment, and the user equipment determines the physical uplink control channel according to the parameter;
  • the parameter includes a time domain size and a number of the repeating unit, and the repeating unit is used by the user equipment to send a physical uplink control channel.
  • An embodiment of the present invention further provides a base station, including a first configuration unit and a first transceiver unit, where
  • the first configuration unit is configured to configure the user equipment, or pre-arrange the parameters of the physical uplink control channel with the user equipment, where the parameter includes the size and the number of the repeating unit, and the repeating unit is configured to send the physical uplink control channel to the user equipment. ;
  • the first transceiver unit is configured to send the parameter configured by the first configuration unit to the user equipment.
  • An embodiment of the present invention further provides a user equipment, including a second transceiver unit and a second determining unit, where
  • the second transceiver unit is configured to receive a parameter of a physical uplink control channel sent by the base station, where the parameter includes a size and a number of the repeating unit, where the repeating unit is configured to send the physical uplink control channel by the user equipment;
  • the second determining unit is configured to configure the physical uplink control channel according to the parameter received by the second transceiver unit or according to the parameters agreed by the user equipment and the base station in advance.
  • An embodiment of the present invention further provides a base station, including a memory and a processor, where the memory stores a computer program executable on a processor, and the processor implements the physical uplink control channel configuration when the program is executed by the processor. The steps in the method.
  • An embodiment of the present invention further provides a user equipment, including a memory and a processor, where the memory stores a computer program executable on a processor, and the processor implements the physical uplink control channel when the program is executed by the processor. The steps in the configuration method.
  • the embodiment of the present invention further provides a computer readable storage medium, where the computer program is stored, and when the computer program is executed by the processor, the steps in the physical uplink control channel configuration method on the base station side or the user equipment side are implemented.
  • the embodiment of the invention further provides a physical uplink control channel configuration method, which includes:
  • the base station and the UE agree on the physical uplink control channel structure: the first symbol of the physical uplink control channel is the decoded reference signal RS, and the second symbol is the uplink control information, and the subsequent symbols are The first symbol and the second symbol are sequentially repeated until the total number of symbols satisfies the required number of symbols.
  • the physical uplink control channel configuration method, the base station, and the user equipment provided by the embodiments of the present invention flexibly and conveniently extend the uplink control channel in the time domain direction through the repeating unit, and satisfy the requirement that the NR medium and long uplink control channel needs to be across slots and a large range. The need for load changes.
  • FIG. 1 is a schematic flowchart of a first physical uplink control channel configuration method according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a second physical uplink control channel configuration method according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • Figure 5 is a schematic diagram of a mapping pattern of a repeating unit composed of two symbols in the above-mentioned behavior main slot structure
  • FIG. 6 is a schematic diagram of a mapping pattern of a repeating unit composed of two symbols in a pure uplink-based slot structure
  • FIG. 7 is a schematic diagram of a hardware entity of a computing device according to an embodiment of the present invention.
  • a slot is a scheduling unit, which may be called a time slot or a scheduling unit, and includes a plurality of consecutive OFDM symbols, which may be a pure uplink or downlink scheduling unit, or may be a scheduling unit of uplink and downlink mixing.
  • the slot in this article can be a regular slot.
  • the NR specifies that in the frequency band not exceeding 6 GHz, the number of symbols in the slot is 7 or 14 OFDM symbols, and in the frequency band exceeding 6 GHz, the symbol data of the slot is at least 14
  • the other values are to be determined; the slot in this article can also be a mini-slot (also called a mini-slot).
  • the currently defined mini-slot contains symbol data (1 to slot). The total number of symbols -1), obviously, the number of symbols in the mini-slot varies widely.
  • the PUSCH resources in this document generally refer to PRB resources, and the PUCCH resources may be PRBs, OFDM symbols, subcarriers, and the like.
  • the PUCCH resource not specifically described herein may be a short PUCCH resource and/or a long PUCCH resource;
  • the PUSCH and the PUCCH in this context respectively correspond to a physical uplink data channel (also referred to as a transmission characteristic, such as uplink data or Uplink data area), physical uplink control channel (also referred to as transmission characteristics, such as uplink control area or uplink control); in the standardization of NR, PUSCH and PUCCH may also be abbreviated as NR-PUSCH and NR-PUCCH. Abbreviations, but the intention is still the physical uplink data channel and the physical uplink control channel, and the bearer content is unchanged, so the title is not used to limit the scope of the present invention.
  • the long uplink control channel in this paper is only the name of an uplink control channel.
  • the technical solution provided in this paper is essentially a physical uplink control channel configuration scheme, suitable for any physical uplink control channel, especially in the long
  • the advantage in the uplink control channel is even greater. Therefore, those skilled in the art will readily appreciate that if the terminology of the long uplink control channel is changed, the technical solution provided by the present invention is still suitable for the configuration of a physical uplink control channel, and the term is not used to limit the scope of the present invention.
  • the “same long uplink control channel” in the present invention refers to “a long uplink control channel”, that is, “a long uplink control channel of the UE”, and “the same physical uplink control channel” “It is a physical uplink control channel,” that is, "a physical uplink control channel of the UE.” In the text, the "uplink control channel” is also the “physical uplink control channel.”
  • a physical uplink control channel configuration method includes:
  • Step S101 The base station configures the user equipment, or pre-arranges the parameters of the physical uplink control channel with the user equipment, where the parameter includes the time domain size and the number of the repeating unit, and the repeating unit is configured to send the physical uplink control channel to the user equipment.
  • Step S102 If the base station configures a parameter of the physical uplink control channel, the base station sends the parameter to the user equipment.
  • the repeating unit may also be named as a base unit or a repeating base unit.
  • the size of the repeating unit includes n orthogonal frequency division multiplexing (OFDM) symbols, where n is a natural number.
  • OFDM orthogonal frequency division multiplexing
  • the time domain size includes one of the following: 1 symbol, 2 symbols, 4 symbols, 5 symbols, 7 symbols, 10 symbols, 11 symbols.
  • one physical uplink control channel includes at least 4 repeating units; if the size of the repeating unit is 2 OFDM symbols, one physical uplink control channel includes at least two Repeat unit.
  • the number of symbols in the time domain of the repeating unit is at most the sum of the number of symbols available in the time slot for the physical uplink control channel.
  • the uplink control channel in the present invention refers to a long uplink control channel, where the UE used for the cell edge of the long uplink control channel occupies more OFDM symbols, and therefore, the mapping between the repeating units of the present invention.
  • the time domain priority is followed, that is, the first repeating unit is mapped first in the time domain direction, and the second repeating unit is mapped; since the long PUCCH is to improve the coverage performance of the UE at the cell edge, the present invention preferentially considers the repeating unit in the time domain direction. repeat.
  • the parameter further includes a parameter of the repeating unit in the frequency domain direction, wherein the parameter of the frequency domain direction is used to indicate a frequency domain position and/or size of the repeating unit, including one of the following:
  • PRB physical resource block
  • the physical resource block of the repeating unit is the physical resource block of the repeating unit.
  • each of the repeating units of one physical uplink control channel has the same frequency domain size
  • the number of frequency domain subcarriers or physical resource blocks is the same for each of the repeating units of one physical uplink control channel.
  • the OFDM symbol included in the one repeating unit may be located in one slot or in a mini-slot.
  • the operation method in the mini-slot is the same as the operation method in the slot;
  • the size of the repetition unit of the present invention may be described in terms of the number of OFDM symbols, or the number of slots or the mini-slots of the specified symbol. The number is described.
  • each of the repeating units of a physical uplink control channel can be independently decoded, and information transmitted in a physical uplink control channel can be obtained by decoding, that is, each repeating unit can obtain the current physics by decoding.
  • the information transmitted in the uplink control channel, or the original information contained in each repeating unit, is the same.
  • the base station should avoid this situation as much as possible, for example by adjusting the size of the repeating unit, the code rate, and the like.
  • the base station allows repeating units of different sizes to be aggregated in one time slot.
  • repeating units of different sizes appear, wherein a smaller repeating unit is located at the end of the slot, or After a large repeating unit, or before a larger repeating unit.
  • repeating units of different sizes appear, wherein a larger repeating unit is located at the end of the slot, or is larger.
  • the repeating unit is after a smaller repeating unit or before a smaller repeating unit.
  • less than one repeating unit symbol constitutes a smaller repeating unit, or less than one repeating unit symbol is aggregated with an adjacent repeating unit into a larger repeating unit.
  • the smaller repeating unit is rate matched with other repeating units in a punctured manner; the symbol of the larger repeating unit exceeding the repeating unit size is repeated in front of the larger repeating unit. The way the symbol is.
  • the base station When transmitting the physical uplink control channel, the base station first determines the total number of OFDM symbols required by the user equipment in the time domain, and then determines the time domain size of the repeating unit, encodes the information to be transmitted according to the given code rate k, and determines the number of PRBs of the frequency domain resource. Determine the repetition number m of the repeating unit, and the final PUCCH transmission code rate is k/m, and m can take 1, that is, only one repeating unit is transmitted, and there is no repetition.
  • the same long uplink control channel spans a time slot
  • one repeating unit cannot cross the time slot. This is because if the repeating unit is spanned over two time slots, the discontinuity of the two parts of the repeating unit on the two time slots may result in the repeating unit being unable to self-decode.
  • the transmitted data may be the same or different redundancy versions encoded by the same original data. It should be noted that even if the data sent by the two repeating units is a different redundancy version, the receiving end can still decode the same original data from different redundancy versions.
  • the base station sends the parameter to the user equipment by using physical layer signaling and/or high layer signaling.
  • the physical layer signaling includes: transmitting and obtaining by using UE-specific or UE group-specific downlink control information by common downlink control information transmission and acquisition;
  • the high layer signaling includes: transmitting and obtaining information through the broadcast system, and transmitting or obtaining through the UE or UE group dedicated RRC message;
  • Physical layer signaling and high layer signaling include: configuring, by higher layer signaling, a possible set of values of the parameter (the size or number of repeating units), the physical layer signaling indicating the parameter from the set of values The specific value.
  • the transmission mode can be adapted to high-level signaling overhead, large delay, large physical layer signaling overhead, and low delay.
  • the parameter is a time domain size of the repeating unit; if the time domain size of the repeating unit in the parameter is previously agreed, The parameter is the number of repeating units.
  • each repeating unit of a physical uplink control channel has the same size in the time domain direction.
  • frequency hopping is performed according to the granularity of the repeating unit (for example, frequency hopping between single and double numbered repeating units), or Perform frequency hopping according to the repeated units of the aggregation (for example, separately synthesizing the first few repeating units and the remaining repeating units, and performing frequency hopping between the repeated units after the aggregation);
  • the repeating unit maps or determines the number of symbols from the two ends of the time slot of the time slot (while the granularity according to the repeating unit) Frequency hopping, or frequency hopping according to the repeated units of the aggregation), or starting from the symbol allowed at the end of the time domain of the time slot to map or determine the number of symbols (while hopping according to the repetition unit, or according to the aggregation).
  • the repeating unit performs frequency hopping) or maps or determines the number of symbols from the allowed symbols in front of the time domain of the time slot (while hopping according to the repetition unit, or hopping according to the repeated unit of aggregation), wherein
  • the allowed symbols are configured by the base station or pre-agreed as the starting symbol of the repeating unit in the time slot.
  • the repeating unit is from the time slot. Both ends of the domain start to map to the middle or determine the number of symbols (while hopping according to the repetition unit, or hopping according to the repeated units of the aggregation), or starting the mapping from the allowed symbols at the end of the time domain of the time slot.
  • the unit is granular hopping, or frequency hopping according to the repeated unit of aggregation), wherein the allowed symbols are configured by the base station or agreed in advance as the starting symbol of the repeating unit in the time slot;
  • a symbol is allowed to be mapped backward or backward from a symbol allowed in the time slot, and a physical uplink control channel of the repeating unit in the time slot is
  • the starting symbol position is configured by the base station and the UE or the base station is configured by signaling.
  • the above mapping method can be used for frequency hopping regardless of whether all the symbols allowed to be used for the physical uplink control channel are occupied by all the repetitive units.
  • frequency hopping starts from one end of the slot time domain, symbols not used by the long uplink control channel are left at one end of the slot time domain, and the symbols not used by the long uplink control channel can be used to transmit data of the uplink shared channel. .
  • the reference signal for data decoding in the uplink shared channel is located in front of the uplink shared channel, and if the symbols not used by the long PUCCH are reserved in front of the uplink shared channel, they are closer to the reference signal, which is advantageous for Data decoding; if symbols not used by long PUCCH are reserved behind the upstream shared channel, the performance of the decoding will be reduced, but the system will still work.
  • each repeating unit of one physical uplink control channel includes a decoded reference signal (RS).
  • RS decoded reference signal
  • the decoded reference signal within the repeating unit is located in the first few symbols within the repeating unit (eg, in the first or first two symbols).
  • whether the decoded reference signal is included in the repeating unit is configured by the base station or pre-agreed (eg, for a long PUCCH of large load, the partial repeating unit may not transmit the decoded reference signal to reduce reference signal overhead). If the base station is configured, the base station sends configuration information through physical layer signaling or higher layer signaling. If it is previously agreed by the base station and the UE, it is necessary to appoint or not to configure the location of the repeating unit of the decoding reference signal; wherein if the reference signal is included, the reference signal is located in the symbol preceding the repeating unit.
  • the reference signal (RS) symbol also allows mapping of upstream data.
  • the mapping between the repeating units of one physical uplink control channel is a time domain priority mapping (ie, the repeating unit repeats the mapping in the time domain within a given frequency domain, and does not allow the frequency domain to repeat the mapping);
  • the repeating unit of the physical uplink control channel is only mapped once in a given frequency domain range (that is, in a given time domain range, the repeating unit of one physical uplink control channel is mapped only once in the frequency domain, that is, the frequency domain is not allowed to repeat) ;
  • the mapping between the repeating units of one physical uplink control channel is a frequency domain priority mapping (ie, the repeating unit repeats the mapping in the frequency domain in a given time domain range, and the repeated mapping is not allowed in the time domain); one physical uplink control The repeating unit of the channel is mapped only once in a given time domain range (ie, in a given frequency domain, the repeating unit of one physical uplink control channel is mapped only once in the time domain, and the immediate domain does not allow repetition).
  • the mapping between the repeating units of one physical uplink control channel is a time domain priority mapping
  • a repeating unit of a physical uplink control channel repeating the mapping of the repeating unit in the time domain within a given frequency domain, and not allowing repeated mapping in the frequency domain;
  • a repeating unit of a physical uplink control channel in which the repeating unit repeats mapping in the time domain, and when frequency hopping between the repeating units, the repeating unit is in the given time domain in the frequency domain of the frequency hopping Frequency domain repeat mapping is not allowed in the range;
  • mapping between the repeating units of one physical uplink control channel is a frequency domain priority mapping
  • repeating unit of a physical uplink control channel in which the repeating unit repeats mapping in the frequency domain within a given time domain, and does not allow time domain repeat mapping
  • a repeating unit of a physical uplink control channel repeating the mapping of the repeating unit in the frequency domain in a given time domain range, and repeating the unit at a given frequency in the time domain of the frequency hopping when the frequency unit is hopping between the repeating units Time domain repeat mapping is not allowed within the domain.
  • frequency hopping is performed in the repeating unit.
  • the method further includes:
  • the base station receives data of a physical uplink control channel according to parameters of the physical uplink control channel.
  • an embodiment of the present invention further discloses a physical uplink control channel configuration method, including:
  • Step S201 The user equipment receives the parameter of the physical uplink control channel sent by the base station, or the parameters of the physical uplink control channel are agreed by the base station and the user equipment in advance;
  • Step S202 The user equipment determines a physical uplink control channel according to the parameter; the parameter includes a time domain size and a number of the repeating unit, and the repeating unit is configured to send the physical uplink control channel by the user equipment.
  • the repeating unit may also be named as a base unit or a repeating base unit.
  • the size of the repeating unit includes n orthogonal frequency division multiplexing (OFDM) symbols, where n is a natural number.
  • OFDM orthogonal frequency division multiplexing
  • the time domain size includes one of the following: 1 symbol, 2 symbols, 4 symbols, 5 symbols, 7 symbols, 10 symbols, 11 symbols.
  • one physical uplink control channel includes at least 4 repeating units; if the size of the repeating unit is 2 OFDM symbols, one physical uplink control channel includes at least two Repeat unit.
  • the number of symbols in the time domain of the repeating unit is at most the sum of the number of symbols available in the time slot for the physical uplink control channel.
  • the uplink control channel in the present invention refers to a long uplink control channel, where the UE used for the cell edge of the long uplink control channel occupies more OFDM symbols, and therefore, the mapping between the repeating units of the present invention.
  • the time domain priority is followed, that is, the first repeating unit is mapped first in the time domain direction, and the second repeating unit is mapped; since the long PUCCH is to improve the coverage performance of the UE at the cell edge, the present invention preferentially considers the repeating unit in the time domain direction. repeat.
  • the parameter further includes a parameter of the repeating unit in the frequency domain direction, wherein the parameter of the frequency domain direction is used to indicate a frequency domain position and/or size of the repeating unit, including one of the following:
  • the physical resource block of the repeating unit is the physical resource block of the repeating unit.
  • each of the repeating units of one physical uplink control channel has the same frequency domain size
  • the number of frequency domain subcarriers or physical resource blocks is the same for each of the repeating units of one physical uplink control channel.
  • the OFDM symbol included in the one repeating unit may be located in one slot or in a mini-slot.
  • the operation method in the mini-slot is the same as the operation method in the slot;
  • the size of the repetition unit of the present invention may be described in terms of the number of OFDM symbols, or the number of slots or the mini-slots of the specified symbol. The number is described.
  • each of the repeating units of a physical uplink control channel can be independently decoded, and information transmitted in a physical uplink control channel can be obtained by decoding, that is, each repeating unit can obtain the current physics by decoding.
  • the information transmitted in the uplink control channel, or the original information contained in each repeating unit, is the same.
  • the base station should avoid this situation as much as possible, for example by adjusting the size of the repeating unit, the code rate, and the like.
  • the user equipment allows repeating units of different sizes to be aggregated in one time slot.
  • a symbol that is not enough for one repeating unit is aggregated with a neighboring repeating unit into a larger repeating unit, and a larger repeating unit is located at the end of one time slot, or after a smaller repeating unit, or before a smaller repeating unit.
  • the smaller repeating units are rate matched to other repeating units in a punctured manner.
  • the sign of the larger repeating unit that exceeds the repeating unit size is in a manner that repeats the sign in front of the larger repeating unit.
  • the same long uplink control channel spans a time slot
  • one repeating unit cannot cross the time slot. This is because if the repeating unit is spanned over two time slots, the discontinuity of the two parts of the repeating unit on the two time slots may result in the repeating unit being unable to self-decode.
  • the transmitted data may be the same or different redundancy versions encoded by the same original data. It should be noted that even if the data sent by the two repeating units is a different redundancy version, the receiving end can still decode the same original data from different redundancy versions.
  • the user equipment receives parameters of the physical uplink control channel sent by the base station by using physical layer signaling and/or high layer signaling.
  • the physical layer signaling includes: transmitting and obtaining by using UE-specific or UE group-specific downlink control information by common downlink control information transmission and acquisition;
  • the high layer signaling includes: transmitting and obtaining information through the broadcast system, and transmitting or obtaining through the UE or UE group dedicated RRC message;
  • Physical layer signaling and high layer signaling include: configuring, by higher layer signaling, a possible set of values of the parameter (the size or number of repeating units), the physical layer signaling indicating the parameter from the set of values The specific value.
  • the transmission mode can be adapted to high-level signaling overhead, large delay, large physical layer signaling overhead, and low delay.
  • the parameter is a time domain size of the repeating unit; if the time domain size of the repeating unit in the parameter is previously agreed, The parameter is the number of repeating units.
  • each repeating unit of the same long uplink control channel has the same size in the time domain direction.
  • frequency hopping is performed according to the granularity of the repeating unit (for example, frequency hopping between single and double numbered repeating units), or Perform frequency hopping according to the repeated units of the aggregation (for example, separately synthesizing the first few repeating units and the remaining repeating units, and performing frequency hopping between the repeated units after the aggregation);
  • the repeating unit maps or determines the number of symbols from the two ends of the time slot of the time slot (while the granularity according to the repeating unit) Frequency hopping, or frequency hopping according to the repeated units of the aggregation), or starting from the symbol allowed at the end of the time domain of the time slot to map or determine the number of symbols (while hopping according to the repetition unit, or according to the aggregation).
  • the repeating unit performs frequency hopping) or maps or determines the number of symbols backward from the allowed symbols in front of the time domain of the time slot (while hopping with granularity according to the repeating unit, or hopping according to the repeated unit of aggregation).
  • the allowed symbols are configured by the base station or agreed in advance as the starting symbol of the repeating unit in the time slot.
  • the repeating unit is from the time slot. Both ends of the domain start to map to the middle or determine the number of symbols (while hopping according to the repetition unit, or hopping according to the repeated units of the aggregation), or starting the mapping from the allowed symbols at the end of the time domain of the time slot.
  • the unit is granular hopping, or hopping according to the repeating unit of the aggregation).
  • the allowed symbols are configured by the base station or agreed in advance as the starting symbol of the repeating unit in the time slot;
  • a symbol is allowed to be mapped backward or backward from a symbol allowed in the time slot, and a physical uplink control channel of the repeating unit in the time slot is
  • the starting symbol position is configured by the base station and the UE or the base station is configured by signaling.
  • the above mapping method can be used for frequency hopping regardless of whether all the symbols allowed to be used for the physical uplink control channel are occupied by all the repetitive units.
  • frequency hopping starts from one end of the slot time domain, symbols not used by the long uplink control channel are left at one end of the slot time domain, and the symbols not used by the long uplink control channel can be used to transmit data of the uplink shared channel. .
  • the reference signal for data decoding in the uplink shared channel is located in front of the uplink shared channel, and if the symbols not used by the long PUCCH are reserved in front of the uplink shared channel, they are closer to the reference signal, which is advantageous for Data decoding; if symbols not used by long PUCCH are reserved behind the upstream shared channel, the performance of the decoding will be reduced, but the system will still work.
  • each repeating unit of a physical uplink control channel includes a decoded reference signal.
  • the decoded reference signal within the repeating unit is located in the first few symbols within the repeating unit (eg, in the first or first two symbols).
  • the reference signal (RS) symbol also allows mapping of upstream data.
  • whether the decoded reference signal is included in the repeating unit is configured by the base station or pre-agreed (eg, for a long PUCCH of large load, the partial repeating unit may not transmit the decoded reference signal to reduce reference signal overhead). If it is configured by the base station, the base station sends configuration information through physical layer signaling or higher layer signaling. If it is previously agreed by the base station and the UE, it is necessary to appoint or not to configure the location of the repeating unit of the decoding reference signal, wherein if the reference signal is included, the reference signal is located in the symbol preceding the repeating unit.
  • the mapping between the repeating units of one physical uplink control channel is a time domain priority mapping (ie, the repeating unit repeats the mapping in the time domain within a given frequency domain, and does not allow the frequency domain to repeat the mapping);
  • the repeating unit of the physical uplink control channel is only mapped once in a given frequency domain range (that is, in a given time domain range, the repeating unit of one physical uplink control channel is mapped only once in the frequency domain, that is, the frequency domain is not allowed to repeat) ;
  • the mapping between the repeating units of one physical uplink control channel is a frequency domain priority mapping (ie, the repeating unit repeats the mapping in the frequency domain in a given time domain range, and the repeated mapping is not allowed in the time domain); one physical uplink control The repeating unit of the channel is mapped only once in a given time domain range (ie, in a given frequency domain, the repeating unit of one physical uplink control channel is mapped only once in the time domain, and the immediate domain does not allow repetition).
  • the mapping between the repeating units of one physical uplink control channel is a time domain priority mapping
  • a repeating unit of a physical uplink control channel repeating the mapping of the repeating unit in the time domain within a given frequency domain, and not allowing repeated mapping in the frequency domain;
  • a repeating unit of a physical uplink control channel in which the repeating unit repeats mapping in the time domain, and when frequency hopping between the repeating units, the repeating unit is in the given time domain in the frequency domain of the frequency hopping Frequency domain repeat mapping is not allowed in the range;
  • mapping between the repeating units of one physical uplink control channel is a frequency domain priority mapping
  • repeating unit of a physical uplink control channel in which the repeating unit repeats mapping in the frequency domain within a given time domain, and does not allow time domain repeat mapping
  • a repeating unit of a physical uplink control channel repeating the mapping of the repeating unit in the frequency domain in a given time domain range, and repeating the unit at a given frequency in the time domain of the frequency hopping when the frequency unit is hopping between the repeating units Time domain repeat mapping is not allowed within the domain.
  • frequency hopping is performed in the repeating unit.
  • an embodiment of the present invention further discloses a base station, including a first configuration unit 10 and a first transceiver unit 20, where
  • the first configuration unit 10 is configured to configure the user equipment, or pre-arrange the parameters of the physical uplink control channel with the user equipment, where the parameter includes the size and the number of the repeating unit, and the repeating unit is configured to send the physical uplink control to the user equipment. channel;
  • the first transceiver unit 20 is configured to send parameters configured by the first configuration unit 10 to the user equipment.
  • the first transceiver unit 20 is further configured to: receive data of a physical uplink control channel according to parameters of the physical uplink control channel.
  • repeating unit described in the present invention may also be named as a base unit or a repeating base unit.
  • the size of the repeating unit includes n orthogonal frequency division multiplexing (OFDM) symbols, where n is a natural number.
  • OFDM orthogonal frequency division multiplexing
  • one physical uplink control channel includes at least 4 repeating units; if the size of the repeating unit is 2 OFDM symbols, one physical uplink control channel includes at least two Repeat unit.
  • the number of symbols in the time domain of the repeating unit is at most the sum of the number of symbols available in the time slot for the physical uplink control channel.
  • the uplink control channel in the present invention refers to a long uplink control channel, where the UE used for the cell edge of the long uplink control channel occupies more OFDM symbols, and therefore, the mapping between the repeating units of the present invention.
  • the time domain priority is followed, that is, the first repeating unit is mapped first in the time domain direction, and the second repeating unit is mapped; since the long PUCCH is to improve the coverage performance of the UE at the cell edge, the present invention preferentially considers the repeating unit in the time domain direction. repeat.
  • the parameter further includes a parameter of the repeating unit in the frequency domain direction, wherein the parameter of the frequency domain direction is used to indicate a frequency domain position and/or size of the repeating unit, including one of the following:
  • the physical resource block of the repeating unit is the physical resource block of the repeating unit.
  • each of the repeating units of one physical uplink control channel has the same frequency domain size
  • the number of frequency domain subcarriers or physical resource blocks is the same for each of the repeating units of one physical uplink control channel.
  • the OFDM symbol included in the one repeating unit may be located in one slot or in a mini-slot.
  • the operation method in the mini-slot is the same as the operation method in the slot;
  • the size of the repetition unit of the present invention may be described in terms of the number of OFDM symbols, or the number of slots or the mini-slots of the specified symbol. The number is described.
  • each of the repeating units of a physical uplink control channel can be independently decoded, and information transmitted in a physical uplink control channel can be obtained by decoding, that is, each repeating unit can obtain the current physics by decoding.
  • the information transmitted in the uplink control channel, or the original information contained in each repeating unit, is the same.
  • the base station should avoid this situation as much as possible, for example by adjusting the size of the repeating unit, the code rate, and the like.
  • the base station allows repeating units of different sizes to be aggregated in one time slot.
  • a symbol that is not enough for one repeating unit is aggregated with a neighboring repeating unit into a larger repeating unit, and a larger repeating unit is located at the end of one time slot, or after a smaller repeating unit, or before a smaller repeating unit.
  • the smaller repeating unit is rate matched with other repeating units in a punctured manner; the larger repeating unit exceeds the repeating unit size by repeating the symbol in front of the larger repeating unit The way.
  • the base station When transmitting the physical uplink control channel, the base station first determines the total number of OFDM symbols required by the user equipment in the time domain, and then determines the time domain size of the repeating unit, encodes the information to be transmitted according to the given code rate k, and determines the number of PRBs of the frequency domain resource. Determine the repetition number m of the repeating unit, and the final PUCCH transmission code rate is k/m, and m can take 1, that is, only one repeating unit is transmitted, and there is no repetition.
  • the same long uplink control channel spans a time slot
  • one repeating unit cannot cross the time slot. This is because if the repeating unit is spanned over two time slots, the discontinuity of the two parts of the repeating unit on the two time slots may result in the repeating unit being unable to self-decode.
  • the transmitted data may be the same or different redundancy versions encoded by the same original data. It should be noted that even if the data sent by the two repeating units is a different redundancy version, the receiving end can still decode the same original data from different redundancy versions.
  • the first transceiver unit 20 sends the parameter to the user equipment by using physical layer signaling and/or high layer signaling.
  • the physical layer signaling includes: transmitting and obtaining by using UE-specific or UE group-specific downlink control information by common downlink control information transmission and acquisition;
  • the high layer signaling includes: transmitting and obtaining information through the broadcast system, and transmitting or obtaining through the UE or UE group dedicated RRC message;
  • Physical layer signaling and high layer signaling include: configuring, by higher layer signaling, a possible set of values of the parameter (the size or number of repeating units), the physical layer signaling indicating the parameter from the set of values The specific value.
  • the transmission mode can be adapted to high-level signaling overhead, large delay, large physical layer signaling overhead, and low delay.
  • the parameter is a time domain size of the repeating unit; if the time domain size of the repeating unit in the parameter is previously agreed, The parameter is the number of repeating units.
  • each repeating unit of a physical uplink control channel has the same size in the time domain direction.
  • frequency hopping is performed according to the granularity of the repeating unit (for example, frequency hopping between single and double numbered repeating units), or Perform frequency hopping according to the repeated units of the aggregation (for example, separately synthesizing the first few repeating units and the remaining repeating units, and performing frequency hopping between the repeated units after the aggregation);
  • the repeating unit maps or determines the number of symbols from the two ends of the time slot of the time slot (while the granularity according to the repeating unit) Frequency hopping, or frequency hopping according to the repeated units of the aggregation), or starting from the symbol allowed at the end of the time domain of the time slot to map or determine the number of symbols (while hopping according to the repetition unit, or according to the aggregation).
  • the repeating unit performs frequency hopping) or maps or determines the number of symbols backward from the allowed symbols in front of the time domain of the time slot (while hopping with granularity according to the repeating unit, or hopping according to the repeated unit of aggregation).
  • the allowed symbols are configured by the base station or agreed in advance as the starting symbol of the repeating unit in the time slot.
  • the repeating unit is from the time slot. Both ends of the domain start to map to the middle or determine the number of symbols (while hopping according to the repetition unit, or hopping according to the repeated units of the aggregation), or starting the mapping from the allowed symbols at the end of the time domain of the time slot.
  • the unit is granular hopping, or hopping according to the repeating unit of the aggregation).
  • the allowed symbols are configured by the base station or agreed in advance as the starting symbol of the repeating unit in the time slot;
  • a symbol is allowed to be mapped backward or backward from a symbol allowed in the time slot, and a physical uplink control channel of the repeating unit in the time slot is
  • the starting symbol position is configured by the base station and the UE or the base station is configured by signaling.
  • the above mapping method can be used for frequency hopping regardless of whether all the symbols allowed to be used for the physical uplink control channel are occupied by all the repetitive units.
  • frequency hopping starts from one end of the slot time domain, symbols not used by the long uplink control channel are left at one end of the slot time domain, and the symbols not used by the long uplink control channel can be used to transmit data of the uplink shared channel. .
  • the reference signal for data decoding in the uplink shared channel is located in front of the uplink shared channel, and if the symbols not used by the long PUCCH are reserved in front of the uplink shared channel, they are closer to the reference signal, which is advantageous for Data decoding; if symbols not used by long PUCCH are reserved behind the upstream shared channel, the performance of the decoding will be reduced, but the system will still work.
  • each repeating unit of a physical uplink control channel contains a decoded reference signal.
  • the decoded reference signal within the repeating unit is located in the first few symbols within the repeating unit (eg, in the first or first two symbols).
  • the reference signal (RS) symbol also allows mapping of upstream data.
  • whether the decoded reference signal is included in the repeating unit is configured by the base station or pre-agreed (eg, for a long PUCCH of large load, the partial repeating unit may not transmit the decoded reference signal to reduce reference signal overhead). If the base station is configured, the base station sends configuration information through physical layer signaling or higher layer signaling. If the base station and the UE agree in advance, it is necessary to stipulate the location of the repeating unit that does not configure the decoding reference signal, wherein if the reference signal is included, the reference signal is located in the symbol preceding the repeating unit.
  • the mapping between the repeating units of one physical uplink control channel is a time domain priority mapping (ie, the repeating unit repeats the mapping in the time domain within a given frequency domain, and does not allow the frequency domain to repeat the mapping);
  • the repeating unit of the physical uplink control channel is only mapped once in a given frequency domain range (that is, in a given time domain range, the repeating unit of one physical uplink control channel is mapped only once in the frequency domain, that is, the frequency domain is not allowed to repeat) ;
  • the mapping between the repeating units of one physical uplink control channel is a frequency domain priority mapping (ie, the repeating unit repeats the mapping in the frequency domain in a given time domain range, and the repeated mapping is not allowed in the time domain); one physical uplink control The repeating unit of the channel is mapped only once in a given time domain range (ie, in a given frequency domain, the repeating unit of one physical uplink control channel is mapped only once in the time domain, and the immediate domain does not allow repetition).
  • the mapping between the repeating units of one physical uplink control channel is a time domain priority mapping
  • a repeating unit of a physical uplink control channel repeating the mapping of the repeating unit in the time domain within a given frequency domain, and not allowing repeated mapping in the frequency domain;
  • a repeating unit of a physical uplink control channel in which the repeating unit repeats mapping in the time domain, and when frequency hopping between the repeating units, the repeating unit is in the given time domain in the frequency domain of the frequency hopping Frequency domain repeat mapping is not allowed in the range;
  • mapping between the repeating units of one physical uplink control channel is a frequency domain priority mapping
  • repeating unit of a physical uplink control channel in which the repeating unit repeats mapping in the frequency domain within a given time domain, and does not allow time domain repeat mapping
  • a repeating unit of a physical uplink control channel repeating the mapping of the repeating unit in the frequency domain in a given time domain range, and repeating the unit at a given frequency in the time domain of the frequency hopping when the frequency unit is hopping between the repeating units Time domain repeat mapping is not allowed within the domain.
  • frequency hopping is performed in the repeating unit.
  • an embodiment of the present invention further discloses a user equipment, including a second transceiver unit 30 and a second determining unit 40, where
  • the second transceiver unit 30 is configured to receive, when the parameter of the uplink control channel is configured by the base station, a parameter of the physical uplink control channel sent by the base station, where the parameter includes a size and a number of the repeating unit, where the repeating unit is configured as a user equipment Sending a physical uplink control channel;
  • the second determining unit 40 is configured to determine a physical uplink control channel according to parameters received by the second transceiver unit 30 or according to parameters agreed by the base station and the user equipment in advance.
  • repeating unit described in the present invention may also be named as a base unit or a repeating base unit.
  • the size of the repeating unit includes n orthogonal frequency division multiplexing (OFDM) symbols, where n is a natural number.
  • OFDM orthogonal frequency division multiplexing
  • the time domain size includes one of the following: 1 symbol, 2 symbols, 4 symbols, 5 symbols, 7 symbols, 10 symbols, 11 symbols.
  • the size of the repeating unit includes n orthogonal frequency division multiplexing (OFDM) symbols, where n is a natural number.
  • OFDM orthogonal frequency division multiplexing
  • one physical uplink control channel includes at least 4 repeating units; if the size of the repeating unit is 2 OFDM symbols, one physical uplink control channel includes at least two Repeat unit.
  • the number of symbols in the time domain of the repeating unit is at most the sum of the number of symbols available in the time slot for the physical uplink control channel.
  • the uplink control channel in the present invention refers to a long uplink control channel, where the UE used for the cell edge of the long uplink control channel occupies more OFDM symbols, and therefore, the mapping between the repeating units of the present invention.
  • the time domain priority is followed, that is, the first repeating unit is mapped first in the time domain direction, and the second repeating unit is mapped; since the long PUCCH is to improve the coverage performance of the UE at the cell edge, the present invention preferentially considers the repeating unit in the time domain direction. repeat.
  • the parameter further includes a parameter of the repeating unit in the frequency domain direction, wherein the parameter of the frequency domain direction is used to indicate a frequency domain position and/or size of the repeating unit, including one of the following:
  • the physical resource block of the repeating unit is the physical resource block of the repeating unit.
  • each of the repeating units of one physical uplink control channel has the same frequency domain size
  • the number of frequency domain subcarriers or physical resource blocks is the same for each of the repeating units of one physical uplink control channel.
  • the OFDM symbol included in the one repeating unit may be located in one slot or in a mini-slot.
  • the operation method in the mini-slot is the same as the operation method in the slot;
  • the size of the repetition unit of the present invention may be described in terms of the number of OFDM symbols, or the number of slots or the mini-slots of the specified symbol. The number is described.
  • each of the repeating units of a physical uplink control channel can be independently decoded, and information transmitted in a physical uplink control channel can be obtained by decoding, that is, each repeating unit can obtain the current physics by decoding.
  • the information transmitted in the uplink control channel, or the original information contained in each repeating unit, is the same.
  • the base station should avoid this situation as much as possible, for example by adjusting the size of the repeating unit, the code rate, and the like.
  • the user equipment allows repeating units of different sizes to be aggregated in one time slot.
  • a symbol that is not enough for one repeating unit is aggregated with a neighboring repeating unit into a larger repeating unit, and a larger repeating unit is located at the end of one time slot, or after a smaller repeating unit, or before a smaller repeating unit.
  • the smaller repeating units are rate matched to other repeating units in a punctured manner.
  • the sign of the larger repeating unit that exceeds the repeating unit size is in a manner that repeats the sign in front of the larger repeating unit.
  • the same long uplink control channel spans a time slot
  • one repeating unit cannot cross the time slot. This is because if the repeating unit is spanned over two time slots, the discontinuity of the two parts of the repeating unit on the two time slots may result in the repeating unit being unable to self-decode.
  • the transmitted data may be the same or different redundancy versions encoded by the same original data. It should be noted that even if the data sent by the two repeating units is a different redundancy version, the receiving end can still decode the same original data from different redundancy versions.
  • the second transceiver unit 30 receives the parameters of the physical uplink control channel sent by the base station by using physical layer signaling and/or high layer signaling.
  • the physical layer signaling includes: transmitting and obtaining by using UE-specific or UE group-specific downlink control information by common downlink control information transmission and acquisition;
  • the high layer signaling includes: transmitting and obtaining information through the broadcast system, and transmitting or obtaining through the UE or UE group dedicated RRC message;
  • Physical layer signaling and high layer signaling include: configuring, by higher layer signaling, a possible set of values of the parameter (the size or number of repeating units), the physical layer signaling indicating the parameter from the set of values The specific value.
  • the transmission mode can be adapted to high-level signaling overhead, large delay, large physical layer signaling overhead, and low delay.
  • the parameter is a time domain size of the repeating unit; if the time domain size of the repeating unit in the parameter is previously agreed, The parameter is the number of repeating units.
  • the above mapping method can be used for frequency hopping regardless of whether all the symbols allowed to be used for the physical uplink control channel are occupied by all the repetitive units.
  • frequency hopping starts from one end of the slot time domain, symbols not used by the long uplink control channel are left at one end of the slot time domain, and the symbols not used by the long uplink control channel can be used to transmit data of the uplink shared channel. .
  • the reference signal for data decoding in the uplink shared channel is located in front of the uplink shared channel, and if the symbols not used by the long PUCCH are reserved in front of the uplink shared channel, they are closer to the reference signal, which is advantageous for Data decoding; if symbols not used by long PUCCH are reserved behind the upstream shared channel, the performance of the decoding will be reduced, but the system will still work.
  • each repeating unit of a physical uplink control channel includes a decoded reference signal.
  • the decoded reference signal within the repeating unit is located in the first few symbols within the repeating unit (eg, in the first or first two symbols).
  • the reference signal (RS) symbol also allows mapping of upstream data.
  • whether the decoded reference signal is included in the repeating unit is configured by the base station or pre-agreed (eg, for a long PUCCH of large load, the partial repeating unit may not transmit the decoded reference signal to reduce reference signal overhead). If the base station is configured, the base station sends configuration information through physical layer signaling or higher layer signaling. If it is previously agreed by the base station and the UE, it is necessary to appoint or not to configure the location of the repeating unit of the decoding reference signal, wherein if the reference signal is included, the reference signal is located in the symbol preceding the repeating unit.
  • the mapping between the repeating units of one physical uplink control channel is a time domain priority mapping (ie, the repeating unit repeats the mapping in the time domain within a given frequency domain, and does not allow the frequency domain to repeat the mapping);
  • the repeating unit of the physical uplink control channel is only mapped once in a given frequency domain range (that is, in a given time domain range, the repeating unit of one physical uplink control channel is mapped only once in the frequency domain, that is, the frequency domain is not allowed to repeat) ;
  • the mapping between the repeating units of one physical uplink control channel is a frequency domain priority mapping (ie, the repeating unit repeats the mapping in the frequency domain in a given time domain range, and the repeated mapping is not allowed in the time domain); one physical uplink control The repeating unit of the channel is mapped only once in a given time domain range (ie, in a given frequency domain, the repeating unit of one physical uplink control channel is mapped only once in the time domain, and the immediate domain does not allow repetition).
  • the mapping between the repeating units of one physical uplink control channel is a time domain priority mapping
  • a repeating unit of a physical uplink control channel repeating the mapping of the repeating unit in the time domain within a given frequency domain, and not allowing repeated mapping in the frequency domain;
  • a repeating unit of a physical uplink control channel in which the repeating unit repeats mapping in the time domain, and when frequency hopping between the repeating units, the repeating unit is in the given time domain in the frequency domain of the frequency hopping Frequency domain repeat mapping is not allowed in the range;
  • mapping between the repeating units of one physical uplink control channel is a frequency domain priority mapping
  • repeating unit of a physical uplink control channel in which the repeating unit repeats mapping in the frequency domain within a given time domain, and does not allow time domain repeat mapping
  • a repeating unit of a physical uplink control channel repeating the mapping of the repeating unit in the frequency domain in a given time domain range, and repeating the unit at a given frequency in the time domain of the frequency hopping when the frequency unit is hopping between the repeating units Time domain repeat mapping is not allowed within the domain.
  • frequency hopping is performed in the repeating unit.
  • the long PUCCH herein corresponds to a physical uplink control channel (also referred to as a transmission characteristic, such as an uplink control region or uplink control).
  • PUCCH may also be abbreviated as other abbreviations such as NR-PUCCH, but its original intention is still the physical uplink control channel, and the bearer content does not change, so the title does not affect the implementation of the method in this paper.
  • the long PUCCH uses the uplink slot
  • the uplink slot has 14 symbols, where the first symbol is the downlink control symbol, the second symbol is the GAP, the first symbol of the last is the short PUCCH, and the remaining symbols are the symbols used by the long PUCCH.
  • the number of repeating units is configured by the base station.
  • the specific value is determined according to actual requirements, such as the size of the overlay. .):
  • the repeating unit has a time domain size of 1 symbol and a frequency domain of 1 PRB, which is repeated at least 4 times.
  • the repeating unit time domain size is 1 symbol, the frequency domain is 2 PRBs, and the repetition is at least 4 times.
  • the repeating unit has a time domain size of 2 symbols and a frequency domain of 1 PRB, which is repeated at least 2 times.
  • the repeating unit has a time domain size of 2 symbols and a frequency domain of 2 PRBs, repeated at least 2 times.
  • the above four configuration modes can use any of the following frequency hopping modes:
  • the first repeating unit is at the low frequency end and the second repeating unit is at the high frequency end.
  • N consecutive time-domain repeating units are mapped to the same PRB at the low-frequency end, and the remaining M time-domain consecutive repeating units are mapped to the same PRB at the high-frequency end.
  • the repeating unit includes an RS code for self-decoding.
  • the RS code is located in the symbol preceding each of the repeating units.
  • the RS code can be optimized in any of the following ways:
  • the first repeating unit configures the RS
  • the second repeating unit deletes the RS (that is, does not include or does not include the RS), and so on.
  • a resource unit (RE) in which a RS is deleted in a repeating unit is used as a long PUCCH.
  • the second repeating unit is configured with RS, the first and third repeating units are deleted by RS, and so on.
  • a resource unit (RE) in which a RS is deleted in a repeating unit is used as a long PUCCH.
  • the same PRB in the frequency domain and four repeating units in the time domain are continuous, the first and fourth repeating units are configured with RS, and the second and third repeating units are deleted by the RS.
  • a resource unit (RE) in which a RS is deleted in a repeating unit is used as a long PUCCH.
  • the same PRB in the frequency domain and five repeating units in the time domain are continuous, the first and fourth complex units are configured with RS, and the second, third, and fifth repeating units delete the RS.
  • a resource unit (RE) in which a RS is deleted in a repeating unit is used as a long PUCCH.
  • the partial repeating unit is instructed or agreed not to configure the RS.
  • the frequency domain is the same PRB, and the number of symbols included in the repeating unit in the time domain is relatively large, for example, when it is greater than three, the RS is allowed to be included in the symbols other than the first symbol in the repeating unit.
  • the resource allocation of the long PUCCH should comply with the following principles:
  • the time domain symbol of the long PUCCH satisfies the coverage requirement as much as possible, and then performs frequency domain resource expansion;
  • the size of the time domain repeating unit of the long PUCCH should be determined according to the available uplink symbols in the actual bearer slot.
  • the base station can configure the repeating unit of the long PUCCH to have a time domain size of 5 symbols, and the number is 2;
  • the first repeating unit of the duration PUCCH can be carried on the same PRB, and the second repeating unit can be carried on another identical PRB to achieve frequency hopping between the repeating units.
  • the base station can configure the repeating unit of the long PUCCH to have a time domain size of four symbols and two numbers;
  • the first repeating unit of the duration PUCCH can be carried on the same PRB, and the second repeating unit can be carried on another identical PRB to achieve frequency hopping between the repeating units.
  • the base station can configure the repeating unit of the long PUCCH to have a time domain size of 2 symbols and the number of the two is 2;
  • the first repeating unit of the duration PUCCH can be carried on the same PRB, and the second repeating unit can be carried on another identical PRB to achieve frequency hopping between the repeating units.
  • the number of symbols that can be used for a long PUCCH in one slot exceeds the number of symbols of the actual long PUCCH, and the symbol that can be used in the immediate domain is a long PUCCH, in the frequency domain, only one PRB can be used for the long PUCCH. Or 2 PRBs. In the same time domain, repeating units of the same long PUCCH are not allowed to repeat in the frequency domain.
  • the base station can configure the repeating unit of the long PUCCH to have a time domain size of 5 or 6 symbols, and the number of the symbols is 2
  • the first repeating unit of the long PUCCH contains 5 symbols, which can be carried on the same PRB
  • the second repeating unit contains 6 symbols, which can be carried on another identical PRB to implement the repeating unit. Frequency hopping between.
  • the base station can configure the repeating unit of the long PUCCH to have a time domain size of 4 or 5 symbols, and the number of the symbols is 2
  • the first repeating unit of the long PUCCH contains 4 symbols, which can be carried on the same PRB
  • the second repeating unit contains 5 symbols, which can be carried on another identical PRB to implement the repeating unit. Frequency hopping between.
  • the base station can configure the repeating unit of the long PUCCH to have a time domain size of 3 or 4 symbols, and the number of the symbols is 2
  • the first repeating unit of the long PUCCH contains 3 symbols, which can be carried on the same PRB
  • the second repeating unit contains 4 symbols, which can be carried on another identical PRB to implement the repeating unit. Frequency hopping between.
  • the position of the long PUCCH at this time is determined as follows:
  • the base station shall classify the number of symbols actually used by the long PUCCH into at least two repeating units (in fact, this principle may not be limited to the above conditions, so it may be described that a slot contains at least 2 repeating units as long PUCCH.
  • the repeating unit When the number of symbols is equal to the number of symbols available in the slot for long PUCCH, the slot can contain a repeating unit.).
  • Two repeating units are respectively located at both ends of the total symbol that can be used by the long PUCCH in the slot, and symbols not used by the long PUCCH are located in the middle of the two repeating units; or, the total symbols that the two repeating units can use from the long PUCCH in the slot One end, starting to map continuously to the other end.
  • the base station can configure the long PUCCH to have at least 2 repeating units in each slot.
  • the repeating units configured by the base station to the same long PUCCH have the same size in the frequency domain.
  • the repeating unit configured with the same long PUCCH in the base station does not perform repeated mapping in the frequency domain, that is, in the same time domain range, after a repeating unit maps once in the frequency domain, it is no longer allowed to perform mapping again in the frequency domain (except for frequency hopping, because frequency hopping In different time domain ranges).
  • the base station determines the resource as: determining the total number of symbols required in the time domain, determining the time domain size of the repeating unit, encoding the information to be transmitted according to the given code rate k, determining the number of PRBs of the frequency domain resource, and determining the repeating unit.
  • the number of repetitions m, the final PUCCH transmission code rate is k/m, and m can take 1, that is, only one repeating unit is transmitted, and there is no repetition.
  • the base station configures the size and number of repeating units of the long PUCCH for the UE, and the number of frequency domain resources PRB.
  • the base station can transmit the foregoing parameter to the UE by using physical layer signaling, for example, downlink control information (for example, in the uplink authorization information), and the UE receives the foregoing parameter sent by the base station to determine a resource of the long PUCCH;
  • the base station sends the foregoing parameter to the UE by using the high layer signaling, for example, an RRC message, and the UE receives the foregoing parameter sent by the base station, and determines the resource of the long PUCCH;
  • the high layer signaling for example, an RRC message
  • the base station configures a repeating unit time domain size set that the UE can use by using the high layer signaling, and then indicates the repeating unit time domain size from the set through the physical layer signaling, and the remaining parameters are still carried by the physical layer signaling.
  • the total number of symbols of the long PUCCH is likely to be different due to the different locations of the UEs, resulting in different total symbol lengths of long PUCCHs of different UEs, for example, more symbols required by the cell edge are long PUCCHs.
  • the resource allocation of the long PUCCH should comply with the following principles:
  • the symbols of the long PUCCH are uniformly allocated from a certain symbol at the end of the slot, and whether the symbol of the short PUCCH is included here, an appointment or signaling indication (including physical layer signaling or high layer signaling indication) may be implemented. For example, if a long PUCCH of a certain UE requires 4 symbols, or a repetition unit composed of 4 symbols, the long PUCCH of the UE is allocated forward from the penultimate symbol (inclusive) (for example, the last symbol is assumed to be short). PUCCH, and the long PUCCH does not contain a short PUCCH symbol; or the UE's long PUCCH is allocated forward from the last symbol (inclusive) of the slot).
  • the remaining symbols in the slot will be used to transmit data of the Physical Uplink Shared Channel (PUSCH).
  • PUSCH Physical Uplink Shared Channel
  • the base station can use the existing technology to configure the symbol position of the PUSCH for the UE, so that the long PUCCH can be utilized. Unoccupied symbols transmit PUSCH. That is, the long PUCCH is configured with symbols from the end of the slot, and the PUSCH is configured with symbols backward from the beginning of the slot (prior art), so that the prior art can be reused to make full use of resources.
  • the symbols included in the slot are used for downlink control information, GAP, uplink data, short PUCCH, etc., and the number of symbols occupied by the downlink control information may be 0 to 2 symbols (the current upper limit is 2, but it is also possible The change, for example, 3), GAP (currently according to one symbol plan, may also be less than one symbol), the short PUCCH may also occupy more symbols (for example, when short PUCCH of multiple UEs is time division multiplexed). Therefore, when the slot contains 7 or 14 symbols, the number of symbols left for the long PUCCH is changed, and the position is also changed.
  • the starting symbol position of the long PUCCH is proposed by the base station and the UE (or the base station is configured by signaling, semi-static RRC message or physical layer signaling or a combination of both) ( It can be derived from the starting symbol position, or it can be calculated backward from the starting position, which one can be agreed or configured.
  • the long PUCCH always starts from the fourth symbol and deducts the symbol backwards; for example, if the long PUCCH or the repeating unit contains 4 symbols, then the 4th, 5th, 6th, and 7th are For the symbol of the long PUCCH, the long PUCCH should be allowed to occupy the symbol of the short PUCCH at this time, or there is no short PUCCH in the slot; for example, for the slot of 14 symbols, the long PUCCH always starts from the fourth symbol.
  • the long PUCCH or the repeating unit contains 4 symbols
  • the 4th, 5th, 6th, and 7th are long PUCCH symbols
  • the long PUCCH should be allowed to occupy the short PUCCH symbol, or There is no short PUCCH in this slot.
  • the base station can configure its start symbol and agree to derive the number of symbols for the long PUCCH from the start symbol forward or backward.
  • the symbol preceding the slot after the start symbol is configured to estimate the number of symbols of the long PUCCH (or the end symbol of the long PUCCH is configured, and the symbols before the end symbol are occupied by the long PUCCH), which is beneficial to avoid the number of symbols due to the downlink control information.
  • the fixed PUCCH is fixed from the 4th symbol in the slot. If the downlink control information in the slot occupies one symbol, the GAP occupies one symbol. At this time, the third symbol is not occupied by the long PUCCH, and there is waste, or when the uplink data is used. To make it complicated (the number of symbols is small, it is difficult to send uplink data with less overhead).
  • FIG. 5 is a schematic diagram of a mapping pattern of a repeating unit composed of two symbols in a slot structure of the above behavior main
  • FIG. 6 is a schematic diagram of a mapping pattern of a repeating unit composed of two symbols in a pure uplink-based slot structure. .
  • long PUCCHs of different UEs are frequency-multiplexed or time-division or code-multiplexed together.
  • the repeating unit of the long PUCCH starts from the penultimate symbol as a start symbol, and starts to estimate the PUCCH symbol in the slot.
  • the start symbol of the long PUCCH is the penultimate symbol (in the start symbol, the base station also needs to indicate or agree from which side the repeating unit is mapped, for example, the repeating unit of UE1 should be indicated from the high frequency side.
  • the start mapping for example, the repeating unit of UE2 should be indicated to start mapping from the low frequency side), the repeating unit size is 2, the number is 4, and frequency hopping between each repeating unit.
  • the base station can configure the number and location of symbols for the long PUCCH in the slot.
  • the number of symbols that can be used for a long PUCCH in a slot is 10 (including that the entire slot symbol is all used for a long PUCCH), and is the last (or the first) 10 symbols of the uplink transmission part in the slot, and (yes/ No) Includes short PUCCH areas.
  • the base station can configure the number and location of symbols for the long PUCCH in the slot, as well as the corresponding frequency domain locations.
  • the frequency domain location can be described as a subband or PRB. Based on the example of the previous paragraph, the frequency domain description is further increased. For example, the frequency domain configuration described as the long PUCCH of the previous segment occurs in subband 0. For different subbands, different numbers of symbols and locations for long PUCCHs are allowed to be configured. As another example, it is described in which PRBs the frequency domain configuration of the long PUCCH of the previous segment occurs.
  • the number and position of the corresponding long PUCCH symbols are allowed to be allocated in different frequency domain positions (subbands or PRBs) in the slot.
  • the number and position of symbols used by the long PUCCH are configured in the subband 0 (or a group of PRBs); the number of symbols and the position used by the long PUCCH are arranged in the subband 1.
  • a long PUCCH between different frequency domain positions in the slot is allowed to be frequency division multiplexed, or different PUCCHs in the same frequency domain are time-divided.
  • the long PUCCH occupies 10 symbols as one UE, and in the subband 1, the long PUCCH allocates 10 symbols to the long PUCCH of the 2 UEs for time division multiplexing, They occupy 5 symbols each, and also allow symbols to cross time.
  • the 10 symbols in subband 0 and subband 1 may be the same symbol.
  • long PUCCHs of different UEs are allowed to perform code division multiplexing.
  • the physical uplink control channel configuration method, the base station, and the user equipment provided by the embodiment of the present invention can flexibly and conveniently extend the uplink control channel in the time domain direction through the repeating unit, and can satisfy the NR medium and long uplink control channel needs to be across slots and a large range. The need for load changes.
  • the embodiment of the invention further provides a physical uplink control channel configuration method, which includes:
  • the base station and the UE agree on the physical uplink control channel structure: the first symbol of the physical uplink control channel is the decoded reference signal RS, and the second symbol is the uplink control information, and the subsequent symbols are The first symbol and the second symbol are sequentially repeated until the total number of symbols satisfies the required number of symbols.
  • the first symbol and the second symbol are considered to constitute a repeating unit of 2 symbols, including:
  • Each of the repeating units of the physical uplink control channel has the same time domain size
  • each of the repeating units of the physical uplink control channel includes two different time domain sizes, and different repeating units with other time domain sizes are located at the beginning or the end of the physical uplink control channel or time slot.
  • one of the repeating units includes orthogonal frequency division multiplexing symbols located in one time slot.
  • the first symbol and the second symbol are considered to constitute a repeating unit, including:
  • the repeat unit contains 2 different time domain sizes, which are:
  • one repeating unit constitute a smaller repeating unit
  • the smaller repeating unit is located at the end of one time slot, or after a larger repeating unit, or before a larger repeating unit;
  • the sign of one repeating unit is aggregated with a neighboring repeating unit into a larger repeating unit, the larger repeating unit is located at the end of one time slot, or after a smaller repeating unit, or before a smaller repeating unit;
  • the smaller repeating unit performs rate matching with other repeating units by means of punching; the symbol of the larger repeating unit exceeding the repeating unit size adopts a manner of repeating the symbol in front of the larger repeating unit.
  • the first symbol of the physical uplink control channel is the decoded reference signal RS
  • the second symbol is the uplink control information
  • the first symbol and the second symbol are sequentially repeated in subsequent symbols.
  • the symbol until the total number of symbols satisfies the required number of symbols, is:
  • the required number of symbols is 4, and the PUCCH is composed of 2 repeating units, and the pattern is: RU+RU;
  • the required number of symbols is 6, and the PUCCH is composed of 3 repeating units, and the pattern is: RU+RU+RU;
  • the required number of symbols is 8, and the PUCCH is composed of 4 repeating units, and the pattern is: RU+RU+RU+RU;
  • the required number of symbols is 10, and the PUCCH is composed of 5 repeating units, and the pattern is: RU+RU+RU+RU+RU;
  • the required number of symbols is 12, and the PUCCH is composed of 6 repeating units, and the pattern is: RU+RU+RU+RU+RU+RU;
  • the required number of symbols is 14, and the PUCCH is composed of 7 repeating units, and the pattern is: RU+RU+RU+RU+RU+RU+RU;
  • R represents a symbol of an RS
  • U represents a symbol of uplink control information
  • RU represents a repeating unit of 2 symbols
  • RSs in all RS symbols in one PUCCH are the same, in the symbols of all uplink control information
  • the uplink control information is the same.
  • the first symbol of the physical uplink control channel is the decoded reference signal RS
  • the second symbol is the uplink control information
  • the first symbol and the second symbol are sequentially repeated in subsequent symbols.
  • the symbol until the total number of symbols satisfies the required number of symbols, is:
  • the required number of symbols is 5, and the PUCCH is composed of 2 repeating units, and the pattern is: RU+RUR;
  • the required number of symbols is 7, and the PUCCH is composed of 3 repeating units, and the pattern is: RU+RU+RUR;
  • the required number of symbols is 9, and the PUCCH is composed of 4 repeating units, and the pattern is: RU+RU+RU+RUR;
  • the required number of symbols is 11, and the PUCCH is composed of 5 repeating units, and the pattern is: RU+RU+RU+RU+RUR;
  • the required number of symbols is 13, and the PUCCH is composed of 6 repeating units, and the pattern is: RU+RU+RU+RU+RU+RUR;
  • R represents a symbol of an RS
  • U represents a symbol of uplink control information
  • RU represents a repeating unit of 2 symbols
  • RSs in all RS symbols in one PUCCH are the same, in the symbols of all uplink control information
  • the uplink control information is the same;
  • RUR is a larger repeating unit, located after a smaller repeating unit, and the first two symbols RU of the larger repeating unit are a repeating unit of 2 symbols, and R of the third symbol is a symbol of the preceding unit of the repeating unit The repetition of R.
  • any of the following configurations may be adopted:
  • the repeating unit has a time domain size of 1 symbol and a frequency domain of 1 PRB, which is repeated at least 4 times.
  • the repeating unit has a time domain size of 1 symbol and a frequency domain of 2 PRBs, which are repeated at least 4 times.
  • the repeating unit has a time domain size of 2 symbols and a frequency domain of 1 PRB, which is repeated at least 2 times.
  • the repeating unit has a time domain size of 2 symbols and a frequency domain of 2 PRBs, which are repeated at least 2 times.
  • the number of repeating units is configured by the base station, and the specific value is determined according to actual needs, such as the size of the coverage.
  • the above four configuration modes can use any of the following frequency hopping modes:
  • Frequency hopping between repeating units in sequence For example, the first repeating unit is at the low frequency end and the second repeating unit is at the high frequency end;
  • N time-domain continuous repeating units are mapped to the same PRB at the low-frequency end, and the remaining M time-domain continuous repeating units are mapped to the same PRB at the high-frequency end.
  • the repeating unit includes an RS code for self-decoding.
  • the RS code is located in the symbol preceding each of the repeating units.
  • the RS code can be optimized in any of the following ways:"
  • the foregoing physical uplink control channel configuration method is implemented in the form of a software function module, and is sold or used as an independent product, it may also be stored in a computer readable storage medium.
  • the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions.
  • One device (which may be a user equipment or base station, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
  • program codes such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
  • An embodiment of the present invention further provides a base station, including a memory and a processor, where the memory stores a computer program executable on a processor, and the processor implements the physical uplink control channel configuration when the program is executed by the processor. The steps in the method.
  • An embodiment of the present invention further provides a user equipment, including a memory and a processor, where the memory stores a computer program executable on a processor, and the processor implements the physical uplink control channel when the program is executed by the processor. The steps in the configuration method.
  • the embodiment of the present invention further provides a computer readable storage medium, where the computer program is stored, and when the computer program is executed by the processor, the steps in the physical uplink control channel configuration method on the base station side or the user equipment side are implemented.
  • FIG. 7 is a schematic diagram of a hardware entity of a physical uplink control channel configuration device according to an embodiment of the present invention.
  • the hardware entity of the device 700 includes: a processor 701, a communication interface 702, and a memory 703. ,among them
  • Processor 701 typically controls the overall operation of device 700.
  • Communication interface 702 can enable device 700 to communicate with other terminals or servers over a network.
  • the memory 703 is configured to store instructions and applications executable by the processor 701, and may also cache data to be processed or processed by the processor 701 and each module in the device 700 (eg, voice communication data, which may be through flash memory (FLASH) or Random access memory (RAM) implementation.
  • voice communication data which may be through flash memory (FLASH) or Random access memory (RAM) implementation.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner such as: multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored or not executed.
  • the coupling, or direct coupling, or communication connection of the components shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may be electrical, mechanical or other forms. of.
  • the units described above as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units; they may be located in one place or distributed on multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated into one unit;
  • the unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the foregoing program may be stored in a computer readable storage medium, and when executed, the program includes The foregoing steps of the method embodiment; and the foregoing storage medium includes: a removable storage device, a read only memory (ROM), a magnetic disk, or an optical disk, and the like, which can store program codes.
  • ROM read only memory
  • the above-described integrated unit of the present invention may be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a standalone product.
  • the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions.
  • a computing device (which may be a personal computer, server, or network device, etc.) is implemented to perform all or part of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes various media that can store program codes, such as a mobile storage device, a ROM, a magnetic disk, or an optical disk.
  • the physical uplink control channel configuration method, the base station, and the user equipment provided by the embodiments of the present invention flexibly and conveniently extend the uplink control channel in the time domain direction through the repeating unit, and satisfy the requirement that the NR medium and long uplink control channel needs to be across slots and a large range. The need for load changes.

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

Abstract

L'invention concerne un procédé de configuration de canal de commande de liaison montante physique, une station de base et un équipement d'utilisateur. Le procédé comprend les étapes suivantes : une station de base configure, pour un équipement d'utilisateur, ou lie à l'avance à l'équipement d'utilisateur un paramètre d'un canal de commande de liaison montante physique, le paramètre comprenant la taille du domaine temporel et le nombre d'unités de répétition, et l'unité de répétition étant conçue pour que l'équipement d'utilisateur envoie le canal de commande de liaison montante physique ; et si la station de base configure le paramètre du canal de commande de liaison montante physique, la station de base envoie le paramètre à l'équipement d'utilisateur.
PCT/CN2018/079905 2017-03-24 2018-03-21 Procédé de configuration de canal de commande de liaison montante physique, station de base, et équipement d'utilisateur Ceased WO2018171645A1 (fr)

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