CN109672511B - PUCCH (physical uplink control channel) transmission method and user terminal - Google Patents

PUCCH (physical uplink control channel) transmission method and user terminal Download PDF

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CN109672511B
CN109672511B CN201710953676.6A CN201710953676A CN109672511B CN 109672511 B CN109672511 B CN 109672511B CN 201710953676 A CN201710953676 A CN 201710953676A CN 109672511 B CN109672511 B CN 109672511B
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slot
short pucch
pucch
physical resource
multiple times
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CN109672511A (en
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李娜
沈晓冬
鲁智
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Vivo Mobile Communication Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/0012—Hopping in multicarrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network

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  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention provides a method for sending a Physical Uplink Control Channel (PUCCH), which comprises the following steps: determining physical resource blocks occupied by repeated transmission of a short PUCCH according to a resource mapping mode when the PUCCH is repeatedly transmitted for multiple times; and repeatedly transmitting the short PUCCH for multiple times according to the physical resource block. Therefore, when the short PUCCH is repeatedly transmitted for multiple times, the frequency diversity gain can be improved, interference randomization can be performed, and further, the redundancy version used by the short PUCCH in repeated transmission of the short PUCCH for multiple times is determined according to the preconfigured redundancy version sequence, so that the incremental redundancy gain can be obtained.

Description

PUCCH (physical uplink control channel) transmission method and user terminal
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method for sending a Physical Uplink Control CHannel (PUCCH) and a user terminal.
Background
When an Acknowledgement (ACK)/Negative Acknowledgement (NACK) Repetition (Repetition) Physical Uplink Control CHannel (PUCCH) is repeatedly transmitted for multiple times in Long Term Evolution (Long Term Evolution, LTE), the same frequency domain resource is used, which has the disadvantage that the frequency domain diversity gain cannot be fully utilized, and if PUCCH of other User terminals (UE) also repeatedly transmits PUCCH using the same time frequency resource, the UE may be always interfered by other UEs. For a short pucch (short pucch) of one symbol (1-symbol) in New Radio (NR), since the time domain length is only one Orthogonal Frequency Division Multiplexing (OFDM) symbol, Frequency Hopping (FH) cannot be performed at each transmission, and Frequency domain diversity gain cannot be obtained.
Disclosure of Invention
An object of the embodiments of the present invention is to provide a method and a user terminal for transmitting a PUCCH, which solve the problem that a frequency domain diversity gain cannot be obtained when a short PUCCH is repeatedly transmitted for multiple times, and can improve the frequency domain diversity gain of the short PUCCH repeatedly transmitted for multiple times.
In a first aspect, an embodiment of the present invention provides a method for sending a physical uplink control channel PUCCH, including:
determining physical resource blocks occupied by repeated transmission of a short PUCCH according to a resource mapping mode when the PUCCH is repeatedly transmitted for multiple times; and
and repeatedly transmitting the short PUCCH for multiple times according to the physical resource block.
In a second aspect, an embodiment of the present invention further provides a user terminal, including:
the processing module is used for determining a physical resource block occupied by repeated transmission of the short PUCCH according to a resource mapping mode when the PUCCH is repeatedly transmitted for multiple times; and
and the transmission module is used for repeatedly transmitting the short PUCCH for multiple times according to the physical resource block.
In a third aspect, an embodiment of the present invention further provides a user terminal, including: a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method of transmitting PUCCH as described in the first aspect.
In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method for transmitting PUCCH according to the first aspect.
Therefore, according to the resource mapping mode when the PUCCH is repeatedly transmitted for multiple times, the physical resource block occupied by the short PUCCH for multiple times of repeated transmission is determined, and then the short PUCCH is repeatedly transmitted for multiple times according to the physical resource block, so that the frequency diversity gain can be improved and the interference randomization can be carried out when the short PUCCH is repeatedly transmitted for multiple times.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a block diagram of a wireless communication system according to an embodiment of the present invention;
fig. 2 is a hardware schematic diagram of a network-side device according to an embodiment of the present invention;
FIG. 3 is a hardware diagram of a UE according to an embodiment of the present invention;
fig. 4 is a flowchart of a method for transmitting a PUCCH according to an embodiment of the present invention;
fig. 5 is a schematic diagram of frequency hopping when a short PUCCH is repeatedly transmitted for multiple times;
fig. 6 is a schematic block diagram of a ue according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be implemented, for example, in a sequence other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
The following first introduces several technical points:
(1) LTE Hybrid Automatic Repeat reQuest (HARQ) -ACK repetition:
a base station (e.g., eNB) may configure a certain UE to repeatedly send the same ACK/NACK transmission in multiple consecutive uplink subframes. This is useful to ensure the reliability of the ACK/NACK signal of the power-limited UE located at the cell boundary. This characteristic is called ACK/NACK Repetition (Repetition) (referred to as HARQ-ACK Repetition in the protocol).
The HARQ-ACK Repetition is configured by a UE-specific parameter ACK/NACK Repetition, and includes parameters such as a Repetition factor (Repetition factor) (the number of times ACK/NACK transmission is repeated including initial ACK/NACK transmission), and a parameter n1PUCCH-AN-Rep (PUCCH resource for replying ACK/NACK at antenna port 0 in ACK/NACK Repetition).
If the UE enables ACK/NACK repeption, the UE will repeatedly send any ACK/NACK transmission NANRep times, wherein NANRep is configured by a repeptitionactor, and the value counts the initial ACK/NACK transmission. If the UE receives a Physical Downlink Shared Channel (PDSCH) transmission (PDSCH transmitted by a Semi-Persistent Scheduling (SPS) subframe) without a Physical Downlink Control Channel (PDCCH), the UE may use the PUCCH resource configured to the SPS to transmit a corresponding ACK/NACK feedback NANrep times. If the PDSCH received by the UE has a corresponding PDCCH or receives a PDCCH indicating SPS release, the PUCCH resource used by the initial ACK/NACK is calculated based on the first CCE (Control Channel Element) index (index) of the corresponding PDCCH, and the subsequent ACK/NACK feedback for NANrep-1 repetitions uses resource transmission configured by n1PUCCH-AN-Rep (corresponding to antenna port 0) and n1PUCCH-AN-Rep 1-r10 (corresponding to antenna port 1 during 2-antenna transmission).
Under Frequency Division Duplex (FDD) or Time Division Duplex (TDD), ACK/NACK repetition is only applicable to a scenario where the UE configures one serving cell (serving cell), i.e., carrier aggregation is not supported. For TDD, ACK/NACK repetition is only applicable to HARQ bundling.
The ACK/NACK Repetition does not support carrier aggregation. This is because it affects the performance of the downlink and carrier aggregation typically assumes that the transmission of control signaling does not suffer from insufficient transmission power.
(2) LTE PUCCH Frequency Hopping (Frequency Hopping, FH)
In LTE, in order to obtain frequency diversity gain, a PUCCH is transmitted in two slots (slots) of one subframe in a frequency hopping manner, that is, Physical Resource Blocks (PRBs) of the PUCCH in the two slots are located at two edges of a system bandwidth, respectively.
(3) Mapping of LTE PUCCH resource indices to physical resources
In LTE, the PUCCH resource is determined by obtaining a PUCCH resource index from a PDCCH first CCE index (index), an ACK/NACK resource indicator (ARI), or an ACK/NACK resource offset value (ARO), and is expressed, for example, in format 1(format 1) as PUCCH resource index (PUCCH resource index — indicated by format 1)
Figure GDA0001483634620000041
Then pass through
Figure GDA0001483634620000042
Calculating variable m, m is a parameter in the technical standard, representing the serial number of Resource Block (RB) used by PUCCH, and finally obtaining physical Resource Block n of PUCCH by mPRB。
Specifically, the UE first obtains the PUCCH resource index through PDCCH first CCE index or ARI or ARO
Figure GDA0001483634620000043
Then use in
Figure GDA0001483634620000044
The parameter configured with other related Radio Resource Control (RRC) obtains a variable m, and the calculation of m is independent of the slot symbol. Then obtaining n from mPRBIn this step, the calculation is related to the time slot in one sub-frame to support the frequency hopping of the PUCCH between two time slots in one sub-frame.
(4) New Wireless (New Radio, NR) short PUCCH
In order to meet different service requirements in NR, PUCCHs with different symbol lengths are introduced: a short PUCCH (1 or 2 Orthogonal Frequency Division Multiple Access (OFDMA) symbols in duration) and a long PUCCH (4-14 OFDMA symbols in duration). For a short PUCCH with 1 symbol (1-symbol), frequency domain diversity gain cannot be obtained because the time domain length is only one OFDM symbol and frequency hopping cannot be supported.
Embodiments of the present invention are described below with reference to the accompanying drawings. The method for sending the PUCCH and the user terminal provided by the embodiment of the invention can be applied to a wireless communication system. The wireless communication system may be a system adopting a 5th Generation (5G) mobile communication technology (hereinafter, referred to as a 5G system), and referring to fig. 1, it is a schematic structural diagram of a wireless communication system according to an embodiment of the present invention. As shown in fig. 1, the wireless communication system may include a network device 10 and a user terminal, for example, denoted as UE 11, which UE 11 may communicate with the network device 10. In practical applications, the connections between the above devices may be wireless connections, and fig. 1 illustrates the connections between the devices by solid lines for convenience and convenience in visual representation.
It should be noted that the communication system may include a plurality of UEs, the network device and may communicate (transmit signaling or transmit data) with a plurality of UEs.
The network side device provided in the embodiment of the present invention may be a base station, and the network side device may be a commonly used base station, an evolved node base station (eNB), or a network device in a 5G system (for example, a next generation base station (gNB) or a Transmission and Reception Point (TRP)). For example, the embodiment of the present invention takes a commonly used base station as an example to introduce a hardware structure of a network device. The following describes each component of the network-side device according to an embodiment of the present invention with reference to fig. 2.
An embodiment of the present invention provides a network-side device, and fig. 2 is a schematic structural diagram of a network-side device 200 provided in an embodiment of the present invention. As shown in fig. 2, the network-side device 200 includes: a processor 201, a transceiver 202, a memory 203, a user interface 204 and a bus interface.
Among other things, the processor 201 may be responsible for managing the bus architecture and general processing. The memory 603 may store data used by the processor 201 in performing operations.
In this embodiment of the present invention, the network side device 200 may further include: a computer program stored on the memory 203 and executable on the processor 201.
In the figure, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 201 and various circuits of memory represented by memory 203 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further in connection with embodiments of the present invention. The bus interface provides an interface. The transceiver 202 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different UEs, the user interface 204 may also be an interface capable of interfacing externally to a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The user terminal provided by the embodiment of the invention can be a Mobile phone, a tablet Computer, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like.
As shown in fig. 3, the user terminal 300 shown in fig. 3 includes: at least one processor 301, memory 302, at least one network interface 304, and a user interface 303. The various components in the user terminal 300 are coupled together by a bus system 305. It will be appreciated that the bus system 305 is used to enable communications among the components connected. The bus system 305 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 305 in fig. 3.
The user interface 303 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.
It will be appreciated that the memory 302 in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration, and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data rate Synchronous Dynamic random access memory (ddr DRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 302 of the subject systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 302 holds the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 3021 and application programs 3022.
The operating system 3021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application programs 3022 include various application programs, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. A program implementing the method of an embodiment of the present invention may be included in the application program 3022.
In the embodiment of the present invention, by calling the program or instruction stored in the memory 302, specifically, the program or instruction stored in the application 3022, the following steps are implemented when the program or instruction is executed: determining physical resource blocks occupied by repeated transmission of a short PUCCH according to a resource mapping mode when the PUCCH is repeatedly transmitted for multiple times; and repeatedly transmitting the short PUCCH for multiple times according to the physical resource block.
Optionally, the computer program when executed by the processor 301 may further implement the following steps:
determining physical resource blocks occupied by repeated sending of the short PUCCH for multiple times according to a resource mapping mode of slot-specific and/or symbol-specific;
the slot-specific resource mapping mode and the symbol-specific resource mapping mode both represent mapping modes of positions of physical resource blocks for transmitting the short PUCCH. The slot-specific resource mapping manner and the symbol-specific resource mapping manner may include a PUCCH slot-based or symbol-based frequency hopping pattern (FH pattern).
Optionally, the computer program when executed by the processor 301 may further implement the following steps:
and determining the physical resource block occupied by repeated transmission of the short PUCCH for multiple times according to the slot number, wherein the slot number is the number of the slot in the system frame.
Optionally, the computer program when executed by the processor 301 may further implement the following steps:
and determining the physical resource block occupied by repeated transmission of the short PUCCH for multiple times according to the symbol number, wherein the symbol number is the number of the OFDM symbol in the time slot.
Optionally, the computer program when executed by the processor 301 may further implement the following steps:
and determining the physical resource block occupied by repeated sending of the short PUCCH for multiple times according to the slot number and the symbol number, wherein the slot number is the number of the slot in the system frame, and the symbol number is the number of the OFDM symbol in the slot.
Optionally, the computer program when executed by the processor 301 may further implement the following steps:
and determining the redundancy version used by each short PUCCH repeated transmission in the short PUCCH repeated transmissions according to a preconfigured redundancy version sequence.
The method disclosed in the above embodiments of the present invention may be applied to the processor 301, or implemented by the processor 301. The processor 301 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 301. The Processor 701 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in ram, flash memory, rom, prom, or eprom, registers, or other storage media as is known in the art. The storage medium is located in the memory 302, and the processor 301 reads the information in the memory 302 and completes the steps of the method in combination with the hardware.
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 4, a flow of a method for transmitting a PUCCH is shown, which includes the following specific steps:
step 401, determining physical resource blocks occupied by repeated transmission of a short PUCCH according to a resource mapping mode when the PUCCH is repeatedly transmitted for multiple times;
it should be noted that the number of times of the multiple repeated transmissions may be two or more, for example, the number of times of the repeated transmissions is greater than four, but is not limited thereto.
Note that, the short PUCCH may be 1 or 2 OFDMA symbols in duration, but is not limited thereto.
In the embodiment of the present invention, optionally, the physical resource block occupied by the repeated transmission of the short PUCCH multiple times is determined according to a slot-specific resource mapping manner and/or a symbol-specific resource mapping manner; wherein, the slot-specific resource mapping mode and the symbol-specific resource mapping mode both represent the mapping mode of the position of the physical resource block for transmitting the short PUCCH.
Step 402, repeatedly transmitting the short PUCCH for multiple times according to the physical resource block;
in this embodiment of the present invention, optionally, in step 401, the physical resource block occupied by the repeated transmission of the short PUCCH for multiple times is determined according to a slot number, where the slot number is a number of a slot in a system frame. For example, with 15kHz subcarrier spacing SCS and normal prefix normal CP, 14 OFDM symbols per slot, 10 slots in a system frame, and the slot number can be {0,1,2, …,9 }.
For example: according to changeQuantity m and time slot number nsAnd determining the physical resource block occupied by repeated transmission of the short PUCCH for multiple times, wherein the variable m represents the sequence number of the physical resource block used by the PUCCH, and the slot number nsThe number of the time slot in the system frame in the mapping from the variable m to the physical resource block is the number; or according to variable m, time slot number nsAnd the number of uplink physical resource blocks, determining the physical resource blocks occupied by repeated transmission of the short PUCCH for multiple times, wherein a variable m represents the sequence number of the physical resource blocks used by the PUCCH, and the slot number nsThe number of the time slot in the system frame in the mapping from the variable m to the physical resource block is the number;
specifically, the physical resource block occupied by the repeated transmission of the short PUCCH for multiple times is determined by the following formula:
Figure GDA0001483634620000091
nPRBrepresenting a physical resource block;
the variable m represents the sequence number of the physical resource block used by the short PUCCH;
in the variables m to nPRBIn the mapping, nsNumbering time slots in the system frame;
Figure GDA0001483634620000092
indicates the number of uplink physical resource blocks.
For example, when the Subcarrier spacing (SCS) is 15kHZ, nsThe value is 0 to 9, and it is understood that n is not limited in the embodiment of the present inventionsThe value range of (a).
In this embodiment of the present invention, optionally, in step 401, the physical resource block occupied by the multiple repeated transmission of the short PUCCH is determined according to a symbol number, where the symbol number is the number of an OFDM symbol in a slot, for example, one slot includes 14 OFDM symbols, and the symbol number may include {0,1,2, …,13 }.
For example: determining a physical resource block occupied by repeated sending of the short PUCCH for multiple times according to a variable m and a symbol number l, wherein the variable m represents the sequence number of the physical resource block used by the PUCCH, and the symbol number l is the number of an OFDM symbol in a time slot from the variable m to the physical resource block mapping; or determining the physical resource block occupied by the repeated sending of the short PUCCH for multiple times according to a variable m, a symbol number l and the number of uplink physical resource blocks, wherein the variable m represents the sequence number of the physical resource block used by the PUCCH, and the symbol number l is the number of the OFDM symbol in the slot from the variable m to the physical resource block mapping.
Specifically, the physical resource block occupied by the repeated transmission of the short PUCCH for multiple times is determined by the following formula:
Figure GDA0001483634620000101
nPRBrepresenting a physical resource block;
the variable m represents the sequence number of the physical resource block used by the short PUCCH;
in the variables m to nPRBIn the mapping, l is the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols in the time slot;
Figure GDA0001483634620000102
indicates the number of uplink physical resource blocks.
In this embodiment of the present invention, optionally, in step 401, the physical resource block occupied by the repeated transmission of the short PUCCH for multiple times is determined according to a slot number and a symbol number, where the slot number is a number of a slot in a system frame, and the symbol number is a number of an OFDM symbol in the slot.
For example: according to variable m and time slot number nsAnd a symbol number l, determining a physical resource block occupied by repeated transmission of the short PUCCH for multiple times, wherein the variable m represents the sequence number of the physical resource block used by the PUCCH, and the slot number nsThe number of the time slot in the system frame in the mapping from the variable m to the physical resource block is shown, and the symbol number l is the number of the OFDM symbol in the time slot in the mapping from the variable m to the physical resource block; or according to variablesm, time slot number nsDetermining physical resource blocks occupied by repeated sending of a short PUCCH for multiple times, symbol number l and the number of uplink physical resource blocks, wherein a variable m represents the sequence number of the physical resource blocks used by the PUCCH, and a slot number nsThe symbol number is the number of the slot in the system frame in the variable m to physical resource block mapping, and the symbol number is the number of the OFDM symbol in the slot in the variable m to physical resource block mapping.
Specifically, the physical resource block occupied by the repeated transmission of the short PUCCH for multiple times is determined by the following formula:
Figure GDA0001483634620000111
nPRBrepresenting a physical resource block;
the variable m represents the sequence number of the physical resource block used by the short PUCCH;
in the variables m to nPRBIn the mapping, nsThe number of the time slot in the system frame is I, and the number of the OFDM symbol in the time slot is I;
Figure GDA0001483634620000112
indicates the number of uplink physical resource blocks.
For example, when the Subcarrier Spacing (SCS) is 15kHZ, nsThe value is 0 to 9, and it is understood that n is not limited in the embodiment of the present inventionsThe value range of (a).
Referring to fig. 5, when a short PUCCH is repeatedly transmitted multiple times, frequency hopping between two symbols (symbols) in each slot (slot) and frequency hopping between slots are implemented according to a slot-specific resource mapping manner and a symbol-specific resource mapping manner.
In the embodiment of the present invention, optionally, in order to obtain incremental Redundancy gain, a Redundancy (RV) Version used for each short PUCCH repetition transmission in the short PUCCH multiple repetition transmissions is determined according to a preconfigured Redundancy Version order. For example: the RV version used each time for the short PUCCH quadruple repeat transmission may be: 0, 2, 1, 3, 2, but is not limited thereto.
Alternative mode 1: the preconfigured redundancy version order is a fixed redundancy version order. That is, the redundancy version used for each short PUCCH retransmission is determined by a fixed redundancy version sequence, for example, the fixed redundancy version sequence is: 0, 2, 1, 3 … …;
alternative 2: the preconfigured redundancy version sequence is a redundancy version sequence configured by the higher layer signaling, that is, the redundancy version used in each repeated transmission of the short PUCCH is determined by the redundancy version sequence configured by the higher layer signaling.
Therefore, when the short PUCCH is repeatedly transmitted for multiple times, the frequency diversity gain can be improved, interference randomization can be performed, and further, the redundancy version used by each PUCCH repeated transmission in the short PUCCH repeated transmission for multiple times is determined according to the preset redundancy version sequence, so that the incremental redundancy gain can be obtained.
The embodiment of the invention also provides a user terminal, and as the principle of solving the problem of the terminal is similar to the method for sending the short PUCCH in the embodiment of the invention, the implementation of the user terminal can refer to the implementation of the method, and repeated parts are not described again.
Referring to fig. 6, there is shown a structure of a user terminal, the user terminal 600 including:
a processing module 601, configured to determine, according to a resource mapping manner when the PUCCH is repeatedly transmitted multiple times, a physical resource block occupied by the short PUCCH repeatedly transmitted multiple times;
a transmission module 602, configured to perform repeated transmission of the short PUCCH multiple times according to the physical resource block.
In this embodiment of the present invention, optionally, the processing module 601 is further configured to:
determining physical resource blocks occupied by repeated sending of the short PUCCH for multiple times according to a resource mapping mode of slot-specific and/or symbol-specific;
the slot-specific resource mapping mode and the symbol-specific resource mapping mode both represent mapping modes of positions of physical resource blocks for transmitting the short PUCCH.
In this embodiment of the present invention, optionally, the processing module 601 is further configured to: and determining the physical resource block occupied by repeated transmission of the short PUCCH for multiple times according to the slot number, wherein the slot number is the number of the slot in the system frame.
In this embodiment of the present invention, optionally, the processing module 601 is further configured to: and determining the physical resource block occupied by repeated transmission of the short PUCCH for multiple times according to the symbol number, wherein the symbol number is the number of the OFDM symbol in the time slot.
In this embodiment of the present invention, optionally, the processing module 601 is further configured to: and determining the physical resource block occupied by repeated sending of the short PUCCH for multiple times according to the slot number and the symbol number, wherein the slot number is the number of the slot in the system frame, and the symbol number is the number of the OFDM symbol in the slot.
In this embodiment of the present invention, optionally, the processing module 601 is further configured to determine, according to a preconfigured redundancy version order, a redundancy version used for each short PUCCH repetition transmission in the short PUCCH multiple repetition transmissions.
In this embodiment of the present invention, optionally, the preconfigured redundancy version order is a fixed redundancy version order; or, the preconfigured redundancy version order is a redundancy version order configured by a higher layer signaling.
The user terminal provided in the embodiment of the present invention may execute the method embodiments described above, and the implementation principle and technical effect are similar, which are not described herein again.
The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may consist of corresponding software modules that may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, a removable hard disk, a compact disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in a core network interface device. Of course, the processor and the storage medium may reside as discrete components in a core network interface device.
Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.

Claims (14)

1. A method for transmitting a Physical Uplink Control Channel (PUCCH) comprises the following steps:
determining physical resource blocks occupied by repeated transmission of a short PUCCH according to a resource mapping mode when the PUCCH is repeatedly transmitted for multiple times; and
performing repeated transmission of the short PUCCH for multiple times according to the physical resource block;
the determining the physical resource block occupied by the repeated transmission of the short PUCCH according to the resource mapping mode when the PUCCH is repeatedly transmitted for multiple times comprises the following steps:
determining physical resource blocks occupied by repeated sending of the short PUCCH for multiple times according to a resource mapping mode of slot-specific and/or symbol-specific;
the slot-specific resource mapping scheme and the symbol-specific resource mapping scheme represent mapping schemes of positions of physical resource blocks for transmitting the short PUCCH.
2. The method of claim 1, wherein determining the physical resource block occupied by the repeated transmission of the short PUCCH for multiple times according to a slot-specific resource mapping manner comprises:
and determining the physical resource block occupied by repeated transmission of the short PUCCH for multiple times according to the slot number, wherein the slot number is the number of the slot in the system frame.
3. The method of claim 1, wherein determining the physical resource block occupied by the repeated transmission of the short PUCCH for multiple times according to the symbol-specific resource mapping manner comprises:
and determining the physical resource block occupied by repeated transmission of the short PUCCH for multiple times according to the symbol number, wherein the symbol number is the number of the OFDM symbol in the time slot.
4. The method of claim 1, wherein determining the physical resource block occupied by the repeated transmission of the short PUCCH multiple times according to a slot-specific resource mapping manner and a symbol-specific resource mapping manner includes:
and determining the physical resource block occupied by repeated sending of the short PUCCH for multiple times according to the slot number and the symbol number, wherein the slot number is the number of the slot in the system frame, and the symbol number is the number of the OFDM symbol in the slot.
5. The method according to any one of claims 1 to 3, further comprising:
and determining the redundancy version used by each short PUCCH repeated transmission in the short PUCCH repeated transmissions according to a preconfigured redundancy version sequence.
6. The method of claim 5, wherein the preconfigured redundancy version order is a fixed redundancy version order; or, the preconfigured redundancy version order is a redundancy version order configured by a higher layer signaling.
7. A user terminal, comprising:
the processing module is used for determining a physical resource block occupied by repeated transmission of the short PUCCH according to a resource mapping mode when the PUCCH is repeatedly transmitted for multiple times; and
the transmission module is used for repeatedly transmitting the short PUCCH for multiple times according to the physical resource block;
wherein the processing module is further to: determining physical resource blocks occupied by repeated sending of the short PUCCH for multiple times according to a resource mapping mode of slot-specific and/or symbol-specific;
the slot-specific resource mapping mode and the symbol-specific resource mapping mode both represent mapping modes of positions of physical resource blocks for transmitting the short PUCCH.
8. The user terminal of claim 7, wherein the processing module is further configured to: and determining the physical resource block occupied by repeated transmission of the short PUCCH for multiple times according to the slot number, wherein the slot number is the number of the slot in the system frame.
9. The user terminal of claim 7, wherein the processing module is further configured to: and determining the physical resource block occupied by repeated transmission of the short PUCCH for multiple times according to the symbol number, wherein the symbol number is the number of the OFDM symbol in the time slot.
10. The user terminal of claim 7, wherein the processing module is further configured to: and determining the physical resource block occupied by repeated sending of the short PUCCH for multiple times according to the slot number and the symbol number, wherein the slot number is the number of the slot in the system frame, and the symbol number is the number of the OFDM symbol in the slot.
11. The user terminal according to any of claims 7 to 10, wherein the processing module is further configured to determine a redundancy version used for each short PUCCH repetition transmission in the short PUCCH multiple repetition transmissions according to a preconfigured redundancy version order.
12. The user terminal of claim 11, wherein the preconfigured redundancy version order is a fixed redundancy version order; or, the preconfigured redundancy version order is a redundancy version order configured by a higher layer signaling.
13. A user terminal, comprising: processor, memory and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, implements the steps of the method of transmitting PUCCH according to any one of claims 1 to 6.
14. A computer-readable storage medium, characterized in that a computer program is stored thereon, which, when being executed by a processor, carries out the steps of the method for transmitting PUCCH according to any one of claims 1 to 6.
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