WO2018127213A1 - 一种上行传输方法、终端及基站 - Google Patents

一种上行传输方法、终端及基站 Download PDF

Info

Publication number
WO2018127213A1
WO2018127213A1 PCT/CN2018/075135 CN2018075135W WO2018127213A1 WO 2018127213 A1 WO2018127213 A1 WO 2018127213A1 CN 2018075135 W CN2018075135 W CN 2018075135W WO 2018127213 A1 WO2018127213 A1 WO 2018127213A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
pilot
base station
frequency domain
transmission
Prior art date
Application number
PCT/CN2018/075135
Other languages
English (en)
French (fr)
Inventor
高雪娟
潘学明
Original Assignee
电信科学技术研究院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Priority to US16/476,545 priority Critical patent/US11356220B2/en
Publication of WO2018127213A1 publication Critical patent/WO2018127213A1/zh

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/261Details of reference signals
    • H04L27/2613Structure of the reference signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/261Details of reference signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2626Arrangements specific to the transmitter only
    • H04L27/2627Modulators
    • H04L27/2628Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2647Arrangements specific to the receiver only
    • H04L27/2655Synchronisation arrangements
    • H04L27/2668Details of algorithms
    • H04L27/2673Details of algorithms characterised by synchronisation parameters
    • H04L27/2676Blind, i.e. without using known symbols
    • H04L27/2678Blind, i.e. without using known symbols using cyclostationarities, e.g. cyclic prefix or postfix
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0014Three-dimensional division
    • H04L5/0023Time-frequency-space
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044Arrangements for allocating sub-channels of the transmission path allocation of payload
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an uplink transmission method, a terminal, and a base station.
  • the new wireless communication system can support DFT-S-OFDM (discrete Fourier transform spread Orthogonal Frequency Division Multiplexing), and can also support CP-OFDM (Cyclic prefix).
  • DFT-S-OFDM discrete Fourier transform spread Orthogonal Frequency Division Multiplexing
  • CP-OFDM Cyclic prefix
  • Orthogonal Frequency Division Multiplexing, cyclic prefix Orthogonal Frequency Division Multiplexing (OFDM) waveforms there are no related schemes for how different waveforms are multiplexed and transmitted.
  • MU-MIMO Multi-User Multiple-Input Multiple-Output
  • the transmission pilot is multiplexed in the adjacent short TTI but on the same symbol, thereby improving the uplink resource utilization.
  • the terminal maps the pilot on the symbol of the transmission pilot according to the comb interval and the determined starting position of the frequency domain;
  • the terminal transmits a pilot mapped on the symbol to the base station.
  • the terminal determines a frequency domain starting position of the pilot, including:
  • the terminal determines a frequency domain start position of the pilot according to the configuration signaling sent by the base station.
  • the candidate value of the starting position of the frequency domain is K, K ⁇ [0, N-1], K is an integer, and N is the comb interval, and N is a positive integer.
  • the symbol of the transmission pilot is one or more symbols pre-approved according to the terminal and the base station; or
  • the symbol of the transmission pilot is one or more symbols determined by the terminal according to configuration signaling sent by the base station.
  • the terminal obtains the pilot mapped on a symbol of a transmission pilot according to the following method:
  • the terminal determines a cyclic shift value and/or an orthogonal sequence of the pilot sequence
  • the terminal generates the pilot according to the cyclic shift value and/or the orthogonal sequence.
  • the terminal determines a cyclic shift value and/or an orthogonal sequence of the pilot sequence, including:
  • the terminal determines the cyclic shift value and/or the orthogonal sequence according to the configuration signaling sent by the base station.
  • the frequency domain starting position is multiple; the terminal mapping the pilot on the symbol of the transmission pilot according to the comb interval and the determined frequency domain starting position, including:
  • the terminal maps multiple pilot sequences on the symbols of the transmission pilots according to each frequency domain starting position and the comb interval.
  • the method further includes:
  • the terminal determines that no data transmission is performed on the symbol of the transmission pilot.
  • the terminal determines a frequency domain start position for transmitting data on a symbol of the transmission pilot, including:
  • the comb interval is that the terminal is pre-agreed with the base station;
  • the comb interval is obtained by the terminal according to configuration signaling sent by the base station.
  • an embodiment of the present invention provides an uplink transmission method, including:
  • the base station acquires pilots of the terminal on the symbol of the terminal transmission pilot according to the comb interval and the determined frequency domain start position.
  • the frequency domain starting position of the pilot is pre-arranged by the base station and the terminal;
  • the frequency domain start position of the pilot is pre-determined by the base station and delivered to the terminal by using configuration signaling.
  • the candidate value of the starting position of the frequency domain is K, K ⁇ [0, N-1], K is an integer, and N is the comb interval, and N is a positive integer.
  • the symbol of the transmission pilot is one or more symbols pre-agreed by the base station and the terminal; or
  • the symbol of the transmission pilot is determined by the base station, and one or more symbols of the terminal are notified by configuration signaling.
  • the base station obtains the pilot mapped on a symbol of a transmission pilot according to the following method:
  • the base station determines a cyclic shift value and/or an orthogonal sequence of the pilot sequence
  • the base station acquires the pilot according to the cyclic shift value and/or the orthogonal sequence.
  • the cyclic shift value and/or the orthogonal sequence is pre-agreed by the base station and the terminal; or
  • the cyclic shift value and/or the orthogonal sequence are determined by the base station and notified to the terminal by configuration signaling.
  • the frequency domain starting position is multiple, and the base station acquires pilots of the terminal on the symbol of the terminal transmission pilot according to the comb interval and the determined frequency domain starting position, including :
  • the base station acquires multiple pilot sequences on the symbols of the transmission pilots according to each frequency domain starting position and the comb interval.
  • the method further includes:
  • the base station determines that no data transmission is performed on the symbol of the transmission pilot.
  • the frequency domain starting location for transmitting data is pre-provisioned by the terminal and the base station;
  • the frequency domain start location for transmitting data is determined by the base station, and is sent to the terminal by using configuration signaling.
  • the comb interval is pre-agreed by the base station and the terminal;
  • the comb interval is determined by the base station, and is sent to the terminal by using configuration signaling.
  • an embodiment of the present invention provides an uplink transmission method, including:
  • the terminal is a terminal that performs uplink transmission using orthogonal frequency division multiplexing DFT-S-OFDM based on Fourier extension, and uplink transmission resources of the multiple terminals overlap in a frequency domain;
  • the base station acquires the pilot of each terminal on the symbol of each terminal transmission pilot according to the comb interval and the determined starting position of each frequency domain.
  • the frequency domain starting position of each terminal pilot is pre-arranged by the base station and each terminal;
  • the frequency domain start position of the pilot is pre-determined by the base station and delivered to each terminal by using configuration signaling.
  • the candidate value of the frequency domain start position of each terminal is K, K ⁇ [0, N-1], K is an integer, and N is the comb interval, and N is a positive integer.
  • the symbol of the transmission pilot is one or more symbols pre-agreed by the base station and each terminal; or
  • the base station obtains the pilot mapped on a symbol of a transmission pilot according to the following method:
  • the base station determines a cyclic shift value and/or an orthogonal sequence of a pilot sequence of each terminal;
  • the base station acquires pilots of each terminal according to cyclic shift values and/or orthogonal sequences of each terminal.
  • the cyclic shift value and/or the orthogonal sequence of each terminal is pre-agreed by the base station and each terminal; or
  • the cyclic shift value and/or the orthogonal sequence of each terminal is determined by the base station, and each terminal is notified by configuration signaling.
  • the frequency domain start position is multiple; the base station acquires, according to the comb interval and the determined frequency domain start position of each terminal, a symbol of each terminal transmission pilot. Pilots, including:
  • the base station separately acquires multiple pilot sequences of the terminal on the symbol of the transmission pilot according to each frequency domain starting position and the comb interval of the terminal.
  • the method further includes:
  • the base station determines that no data transmission is performed on the symbol of the transmission pilot of the terminal; or the base station determines that the frequency of the transmission pilot of the terminal is used to transmit data in the frequency domain. a start position, and acquiring data on a symbol of a transmission pilot of the terminal according to the determined frequency domain start position for transmitting data and the comb interval.
  • the frequency domain starting location for transmitting data is pre-provisioned by the terminal and the base station;
  • the frequency domain start location for transmitting data is determined by the base station, and is sent to the terminal by using configuration signaling.
  • the comb interval is pre-arranged for each terminal of the base station.
  • the comb interval is determined by the base station, and is sent to each terminal by using configuration signaling.
  • an embodiment of the present invention provides a terminal, including:
  • a determining unit configured to determine a frequency domain starting position of the pilot, where the terminal is a terminal that performs uplink transmission by using CP-OFDM;
  • a pilot mapping unit configured to map a pilot on a symbol of a transmission pilot according to a comb interval and a determined frequency domain start position
  • a sending unit configured to send a pilot mapped on the symbol to the base station.
  • the determining unit is specifically configured to:
  • the candidate value of the starting position of the frequency domain is K, K ⁇ [0, N-1], K is an integer, and N is the comb interval, and N is a positive integer.
  • the symbol of the transmission pilot is one or more symbols pre-approved according to the terminal and the base station; or
  • the symbol of the transmission pilot is one or more symbols determined by the terminal according to configuration signaling sent by the base station.
  • the determining unit is further configured to obtain, according to the following method, the pilot that is mapped on a symbol of a transmission pilot:
  • the pilot is generated based on the cyclic shift value and/or the orthogonal sequence.
  • the determining unit is specifically configured to: determine the cyclic shift value and/or an orthogonal sequence according to a pre-arrangement with the base station; or
  • the terminal determines the cyclic shift value and/or the orthogonal sequence according to the configuration signaling sent by the base station.
  • the frequency domain starting position is multiple; the pilot mapping unit is specifically configured to: separately map, according to each frequency domain starting position and the comb interval, on a symbol of a transmission pilot Multiple pilot sequences.
  • the terminal further includes a data mapping unit, configured to:
  • the data mapping unit is specifically configured to: determine, according to a pre-arrangement with the base station, the frequency domain starting location for transmitting data; or
  • the comb interval is that the terminal is pre-agreed with the base station;
  • the comb interval is obtained by the terminal according to configuration signaling sent by the base station.
  • an embodiment of the present invention provides a base station, including:
  • a determining unit configured to determine a frequency domain starting position of a pilot of the terminal, where the terminal is a terminal that performs uplink transmission by using CP-OFDM;
  • a pilot acquiring unit configured to acquire a pilot of the terminal on a symbol of the terminal transmission pilot according to the comb interval and the determined frequency domain starting position.
  • the frequency domain starting position of the pilot is pre-arranged by the base station and the terminal;
  • the frequency domain start position of the pilot is pre-determined by the base station and delivered to the terminal by using configuration signaling.
  • the candidate value of the starting position of the frequency domain is K, K ⁇ [0, N-1], K is an integer, and N is the comb interval, and N is a positive integer.
  • the symbol of the transmission pilot is one or more symbols pre-agreed by the base station and the terminal; or
  • the symbol of the transmission pilot is determined by the base station, and one or more symbols of the terminal are notified by configuration signaling.
  • the determining unit is further configured to obtain, according to the following method, the pilot that is mapped on a symbol of a transmission pilot:
  • the pilot is obtained according to the cyclic shift value and/or the orthogonal sequence.
  • the cyclic shift value and/or the orthogonal sequence is pre-agreed by the base station and the terminal; or
  • the cyclic shift value and/or the orthogonal sequence are determined by the base station and notified to the terminal by configuration signaling.
  • the frequency domain starting position is multiple; the pilot acquiring unit is specifically configured to: according to each frequency domain starting position and the comb interval, on the symbol of the transmission pilot Obtain multiple pilot sequences separately.
  • the base station further includes a data acquiring unit, configured to:
  • the frequency domain starting location for transmitting data is pre-provisioned by the terminal and the base station;
  • the frequency domain start location for transmitting data is determined by the base station, and is sent to the terminal by using configuration signaling.
  • the comb interval is pre-agreed by the base station and the terminal;
  • the comb interval is determined by the base station, and is sent to the terminal by using configuration signaling.
  • an embodiment of the present invention provides a base station, including:
  • a determining unit configured to determine a frequency domain start position of a pilot of each of the plurality of terminals, where at least one of the plurality of terminals is a terminal that performs uplink transmission using CP-OFDM, the multiple terminals At least one of the terminals is a terminal that performs uplink transmission using Fourier-spread-based orthogonal frequency division multiplexing DFT-S-OFDM, and uplink transmission resources of the multiple terminals overlap in a frequency domain;
  • a pilot acquiring unit configured to acquire a pilot of each terminal on a symbol of each terminal transmission pilot according to the comb interval and the determined starting position of each frequency domain.
  • the frequency domain starting position of each terminal pilot is pre-arranged by the base station and each terminal;
  • the frequency domain start position of the pilot is pre-determined by the base station and delivered to each terminal by using configuration signaling.
  • the candidate value of the frequency domain start position of each terminal is K, K ⁇ [0, N-1], K is an integer, and N is the comb interval, and N is a positive integer.
  • the symbol of the transmission pilot is one or more symbols pre-agreed by the base station and each terminal; or
  • the symbol of the transmission pilot is determined by the base station, and one or more symbols of each terminal are notified by configuration signaling.
  • the determining unit is further configured to obtain, according to the following method, the pilot that is mapped on a symbol of each terminal transmission pilot:
  • the pilot of each terminal is obtained according to the cyclic shift value and/or the orthogonal sequence of each terminal.
  • the cyclic shift value and/or the orthogonal sequence of each terminal is pre-agreed by the base station and each terminal; or
  • the cyclic shift value and/or the orthogonal sequence of each terminal is determined by the base station, and each terminal is notified by configuration signaling.
  • the frequency domain starting position is multiple
  • the pilot acquiring unit is specifically configured to, according to any terminal, according to each frequency domain starting position and the comb interval of the terminal, Obtaining a plurality of pilot sequences of the terminal on the symbols of the transmission pilots, respectively.
  • the base station further includes a data acquiring unit, configured to:
  • the frequency domain starting location for transmitting data is pre-provisioned by the terminal and the base station;
  • the frequency domain start location for transmitting data is determined by the base station, and is sent to the terminal by using configuration signaling.
  • the comb interval is pre-arranged for each terminal of the base station.
  • the comb interval is determined by the base station, and is sent to each terminal by using configuration signaling.
  • another terminal provided by the embodiment of the present application includes:
  • a memory for storing program instructions
  • a processor configured to invoke a program instruction stored in the memory, and execute according to the obtained program:
  • CP-OFDM cyclic prefix orthogonal frequency division multiplexing
  • the pilot mapped on the symbol is transmitted to the base station.
  • another base station provided by the embodiment of the present application includes:
  • a memory for storing program instructions
  • a processor configured to invoke a program instruction stored in the memory, and execute according to the obtained program:
  • Another base station provided by the embodiment of the present application includes:
  • a memory for storing program instructions
  • a processor configured to invoke a program instruction stored in the memory, and execute according to the obtained program:
  • Determining a frequency domain start position of a pilot of each of the plurality of terminals wherein at least one of the plurality of terminals is a terminal for uplink transmission using CP-OFDM, and at least one of the plurality of terminals a terminal for uplink transmission using orthogonal frequency division multiplexing (DFT-S-OFDM) based on Fourier extension, where uplink transmission resources of the multiple terminals overlap in a frequency domain;
  • DFT-S-OFDM orthogonal frequency division multiplexing
  • the pilot of each terminal is acquired on the symbol of each terminal transmission pilot according to the comb interval and the determined starting position of each frequency domain.
  • a computer storage medium provided by the embodiment of the present application stores computer executable instructions, where the computer executable instructions are used to cause the computer to perform any of the methods provided in the embodiments of the present application.
  • the terminal determines a frequency domain starting position of the pilot, where the terminal is a terminal that performs uplink transmission by using CP-OFDM; and according to the comb interval and the determined starting position of the frequency domain, on the symbol of the transmission pilot Mapping the pilot; and transmitting the pilot mapped on the symbol to the base station.
  • the embodiment of the present invention provides a scheme for mapping a pilot and a multiplexed transmission pilot on the same symbol in the uplink direction by using a CP-OFDM uplink transmission, and mapping the pilot on the symbol by using a comb interval.
  • FIG. 1 is a schematic diagram of a prior art LTE PUSCH pilot structure
  • FIG. 3 is a flowchart of an uplink transmission method according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of an uplink transmission method according to an embodiment of the present invention.
  • 5-1 is a schematic diagram of a first pilot mapping according to an embodiment of the present invention.
  • FIG. 5-2 is a schematic diagram of a second pilot mapping according to an embodiment of the present disclosure.
  • FIG. 5-3 is a schematic diagram of a third pilot mapping according to an embodiment of the present disclosure.
  • FIG. 5-4 is a schematic diagram of a fourth pilot mapping according to an embodiment of the present disclosure.
  • FIG. 5-5 is a schematic diagram of a fifth pilot mapping according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of a sixth pilot mapping according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of a seventh pilot mapping according to an embodiment of the present invention.
  • FIG. 5-8 are schematic diagrams of an eighth pilot mapping provided by an embodiment of the present invention.
  • FIG. 5-9 is a schematic diagram of a ninth pilot mapping according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a tenth pilot mapping according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of multiple frequency domain starting positions according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of a first type of base station according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of a second base station according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic diagram of another terminal according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic diagram of a third base station according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of a fourth base station according to an embodiment of the present invention.
  • the embodiment of the present application can be applied to a 4G (fourth generation mobile communication system) evolution system, such as an LTE (Long Term Evolution) system, or can also be a 5G (fifth generation mobile communication system) system, such as adopting a new wireless system.
  • 4G fourth generation mobile communication system
  • LTE Long Term Evolution
  • 5G fifth generation mobile communication system
  • New RAT new radio access technology
  • CRAN Cloud Radio Access Network
  • a terminal also called a User Equipment (UE) is a device that provides voice and/or data connectivity to a user, for example, a handheld device with a wireless connection function, an in-vehicle device, and the like.
  • UE User Equipment
  • Common terminals include, for example, mobile phones, tablets, notebook computers, PDAs, mobile internet devices (MIDs), wearable devices such as smart watches, smart bracelets, pedometers, and the like.
  • MIDs mobile internet devices
  • wearable devices such as smart watches, smart bracelets, pedometers, and the like.
  • a base station also known as a radio access network (RAN) device
  • RAN radio access network
  • eNB evolved Node B
  • RNC Radio network controller
  • NB Node B
  • BSC Base Station Controller
  • BTS Base Transceiver Station
  • home base station for example, Home evolved
  • HNB Home Node B
  • BBU BaseBand Unit
  • AP Wifi Access Point
  • Multiple means two or more. "and/or”, describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
  • the character "/" generally indicates that the contextual object is an "or" relationship.
  • the meanings of the symbols include, but are not limited to, Orthogonal Frequency Division Multiplexing (OFDM) symbols, Sparse Code Multiplexing Access (SCMA) symbols, and filtering. Filtered Orthogonal Frequency Division Multiplexing (F-OFDM) symbols, Non-Orthogonal Multiple Access (NOMA) symbols, Single-Carrier Frequency Division Multiple Access (Single-carrier Frequency-Division Multiple) Access, SC-FDMA), Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-S-OFDM), Cyclic Prefix Orthogonal Frequency (Cyclic Prefix Orthogonal Frequency) Division Multiplexing (CP-OFDM) and Pattern Division Multiple Access (PDMA), which can be determined according to actual conditions, and will not be described here.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SCMA Sparse Code Multiplexing Access
  • filtering Filtered Orthogonal Frequency Division Multiplexing
  • NOMA Non-
  • FIG. 2 it is an uplink transmission method provided by an embodiment of the present invention.
  • Step 201 The terminal determines a frequency domain start position of the pilot, where the terminal is a terminal that performs uplink transmission by using CP-OFDM.
  • Step 202 The terminal maps the pilot on the symbol of the transmission pilot according to the comb interval and the determined starting position of the frequency domain.
  • Step 203 The terminal sends the pilot mapped on the symbol to the base station.
  • the terminal is a terminal that configures or stipulates uplink transmission using CP-OFDM.
  • the terminal determines a frequency domain start position of the pilot. Specifically, the terminal determines a frequency domain start position of the pilot according to a pre-arrangement with the base station; or the terminal according to the base station The configured configuration signaling determines the starting position of the frequency domain of the pilot.
  • the candidate value of the starting position of the frequency domain is K, K ⁇ [0, N-1], K is an integer, and N is a comb interval, and N is a positive integer, wherein the comb interval may also be referred to as Comb position or index.
  • the terminal maps the pilot on the symbol of the transmission pilot according to the comb interval and the determined starting position of the frequency domain, where the symbol of the transmission pilot is one or more symbols pre-agreed according to the terminal and the base station. Or one or more symbols determined by the terminal according to configuration signaling delivered by the base station.
  • the symbol of the transmission pilot may be one symbol, or may be multiple symbols, and may be a pre-agreed fixed-position symbol or a symbol specified according to configuration signaling delivered by the base station.
  • the terminal determines a cyclic shift value and/or an orthogonal sequence of the pilot sequence and then generates a pilot based on the cyclic shift value and/or the orthogonal sequence.
  • the specific manner of determining the pilot sequence by the terminal is: the terminal determines the cyclic shift value and/or the orthogonal sequence according to a pre-arrangement with the base station; or the terminal determines the cyclic shift according to the configuration signaling sent by the base station. Bit values and/or orthogonal sequences.
  • the comb interval is specifically represented by: a mapping interval of each element in the pilot sequence on a frequency domain resource on one symbol (for example, a difference between mapped subcarrier numbers) or a pilot multiplexing factor (ie, A plurality of pilots of different uplink transmissions may be frequency-division multiplexed on one resource block).
  • the terminal When the starting position of the frequency domain is multiple, the terminal separately maps multiple pilot sequences on the symbols of the transmission pilot according to the starting position of each frequency domain and the comb interval, and corresponding to different frequency domain starts.
  • the pilot sequences of the locations may be generated independently (ie, may correspond to different cyclic shift values and/or orthogonal sequences), or be the same sequence.
  • the terminal determines that no data transmission is performed on the symbol of the transmission pilot; or the terminal determines a frequency domain start position for transmitting the data on the symbol of the transmission pilot, and starts according to the determined frequency domain for transmitting data.
  • the location and the comb interval map data on symbols of the transmitted pilot.
  • the terminal determines whether there is a resource for transmitting data on the symbol of the transmission pilot by configuring the configuration of the signaling or a pre-arrangement with the base station.
  • the terminal further determines a frequency domain start position for transmitting the data according to a pre-arrangement with the base station; or the terminal determines according to the configuration signaling sent by the base station.
  • the frequency domain starting position for transmitting data is determined.
  • the configuration of the configuration signaling or the pre-arrangement with the base station may be valid for all frequency domain resources scheduled by the terminal, or for each resource block or each sub-band of the frequency domain resources scheduled for the terminal. Independent configuration or convention.
  • the configuration signaling mentioned above may be an indication field in a high-level signaling or a downlink control channel carrying an uplink scheduling grant (that is, a downlink control channel in an uplink DCI (Downlink Control Information) format).
  • an uplink scheduling grant that is, a downlink control channel in an uplink DCI (Downlink Control Information) format.
  • the terminal transmits the pilot mapped on the symbol to the base station.
  • the terminal determines a frequency domain starting position of the pilot, where the terminal is a terminal that performs uplink transmission by using CP-OFDM; and according to the comb interval and the determined starting position of the frequency domain, on the symbol of the transmission pilot Mapping the pilot; and transmitting the pilot mapped on the symbol to the base station.
  • the embodiment of the present invention provides a scheme for mapping a pilot and a pilot pilot in an uplink direction by using a CP-OFDM uplink transmission. Since the pilot is mapped on the symbol by using a comb interval, the symbol can be implemented on one symbol. Mapping multiple pilot sequences of one terminal, or mapping multiple pilot sequences of different terminals on one symbol, and implementing multi-terminal multiplexing transmission pilots can improve uplink resource utilization.
  • FIG. 3 it is an uplink transmission method provided by an embodiment of the present invention.
  • Step 301 The base station determines a frequency domain start position of a pilot of the terminal, where the terminal is a terminal that performs uplink transmission by using CP-OFDM.
  • the above steps 301 to 302 are the flow of the method on the base station side, which corresponds to the method flow on the terminal side shown in FIG. 2 .
  • the base station determines the frequency domain start position of the pilot of the terminal.
  • the terminal is a terminal that performs uplink transmission using CP-OFDM.
  • the candidate value of the frequency domain start position is K, K ⁇ [0, N-1], K is an integer, and N is a comb interval, and N is a positive integer.
  • the comb interval is specifically represented by: a mapping interval of each element in the pilot sequence on a frequency domain resource on one symbol (for example, a difference between mapped subcarrier numbers) or a pilot multiplexing factor (ie, A plurality of pilots of different uplink transmissions may be frequency-division multiplexed on one resource block).
  • the comb interval is pre-agreed by the terminal and the base station; or the comb interval is obtained by the terminal according to the configuration signaling sent by the base station.
  • the base station acquires the pilot of the terminal on the symbol of the pilot transmission pilot according to the comb interval and the determined frequency domain start position.
  • the symbol of the transmission pilot is one or more symbols pre-agreed by the base station and the terminal; or the symbol of the transmission pilot is determined by the base station, and the one or more symbols of the terminal are notified by configuration signaling.
  • the base station obtains the pilot mapped on the symbol of the transmission pilot according to the following method:
  • the base station determines a cyclic shift value and/or an orthogonal sequence of the pilot sequence; and obtains a pilot according to the cyclic shift value and/or the orthogonal sequence.
  • the cyclic shift value and/or the orthogonal sequence are pre-agreed by the base station and the terminal, or are determined by the base station and notified by the configuration signaling.
  • the base station separately acquires multiple pilot sequences on the symbols of the transmission pilot according to each frequency domain start position and the comb interval.
  • the base station determines that no data transmission is performed on the symbol of the transmission pilot; or the base station determines a frequency domain start position for transmitting data on the symbol of the transmission pilot, and according to the determined frequency domain for transmitting data
  • the starting position and the comb interval acquire data on the symbols of the transmission pilot.
  • the frequency domain start location for transmitting data is pre-agreed by the terminal and the base station; or the frequency domain start location for transmitting data is determined by the base station and delivered to the terminal by using configuration signaling.
  • the base station receives the pilot that is transmitted by the terminal and is mapped on the symbol of the transmission pilot, where the terminal is a terminal that performs uplink transmission using CP-OFDM; the base station determines a frequency domain start position of the pilot; The pilot interval and the determined frequency domain start position acquire the pilot of the terminal.
  • the embodiment of the present invention provides a scheme for mapping a pilot and a multiplexed transmission pilot on the same symbol in the uplink direction by using a CP-OFDM uplink transmission, and mapping the pilot on the symbol by using a comb interval.
  • FIG. 4 it is a schematic diagram of an uplink transmission method according to an embodiment of the present invention.
  • Step 401 The base station determines a frequency domain start position of a pilot of each of the multiple terminals, where at least one of the multiple terminals is a terminal that performs uplink transmission by using CP-OFDM, where the multiple terminals are At least one terminal is a terminal that performs uplink transmission using Fourier-spread-based orthogonal frequency division multiplexing (DFT-S-OFDM), and uplink transmission resources of the plurality of terminals overlap in a frequency domain.
  • DFT-S-OFDM Fourier-spread-based orthogonal frequency division multiplexing
  • Step 402 The base station acquires pilots of each terminal on the symbol of each terminal transmission pilot according to the comb interval and the determined starting position of each frequency domain.
  • steps 401 to 402 are the flow of the method on the base station side, and the difference from the method flow on the base station side shown in FIG. 3 is that the method flow shown in FIG. 4 is a method flow for uplink transmission of multiple terminals, and FIG. The method flow shown in 3 is a method flow for uplink transmission of a single terminal.
  • the base station determines a frequency domain start position of a pilot of each of the plurality of terminals.
  • At least one terminal is a terminal that performs uplink transmission using CP-OFDM, and at least one terminal is a terminal that performs uplink transmission using DFT-S-OFDM.
  • the candidate value of the frequency domain start position of each terminal is K, K ⁇ [0, N-1], K is an integer, and N is a comb interval, and N is a positive integer.
  • the comb interval is pre-agreed by each terminal and the base station; or the comb interval is obtained by each terminal according to configuration signaling sent by the base station.
  • the base station acquires the pilot of each terminal on the symbol of each terminal transmission pilot according to the comb interval and the determined frequency domain start position.
  • the symbol of the transmission pilot is one or more symbols pre-arranged by the base station and each terminal; or the symbol of the transmission pilot is determined by the base station, and one or more of each terminal is notified by configuration signaling. symbol.
  • the base station obtains the pilot mapped on the symbol of the transmission pilot according to the following method:
  • the cyclic shift value and/or the orthogonal sequence is pre-agreed by the base station and each terminal, or is determined by the base station and notified by the configuration signaling.
  • the base station separately acquires the symbol of the transmission pilot according to each frequency domain start position of the terminal and the comb interval A plurality of pilot sequences of the terminal.
  • the base station determines that no data transmission is performed on the symbol of the transmission pilot of the terminal; or the base station determines a frequency domain start position for transmitting data on the symbol of the transmission pilot of the terminal, And acquiring data on the symbol of the transmission pilot of the terminal according to the determined frequency domain starting position for transmitting data and the comb interval.
  • the frequency domain start location for transmitting data is pre-agreed by the terminal and the base station; or the frequency domain start location for transmitting data is determined by the base station and delivered to the terminal by using configuration signaling.
  • the base station receives the pilots that are sent by the multiple terminals and are mapped on the symbols of the transmission pilots, and at least one of the multiple terminals is a terminal that uses the CP-OFDM for uplink transmission, and at least one terminal is used.
  • a terminal for uplink transmission based on Fourier-spread Orthogonal Frequency Division Multiplexing (DFT-S-OFDM), where uplink transmission resources of the plurality of terminals overlap in a frequency domain; the base station determines pilots of each terminal a frequency domain start position; the base station acquires pilots of each terminal according to the comb interval and the determined start position of each frequency domain.
  • DFT-S-OFDM Fourier-spread Orthogonal Frequency Division Multiplexing
  • the embodiment of the present invention provides a terminal for performing uplink transmission using CP-OFDM and a terminal for uplink transmission using DFT-S-OFDM, and mapping pilot and multiplex transmission pilots on the same symbol in the uplink direction, Since the pilot is mapped on the symbol by using the comb interval, multiple pilot sequences of one terminal can be mapped on one symbol, or multiple pilot sequences of different terminals can be mapped on one symbol, thereby implementing multi-terminal support.
  • the transmission pilot when different terminals have different waveforms, different waveforms can be multiplexed and transmitted on the same resource, which can improve the utilization of uplink resources.
  • Embodiments of the present invention provide a transmission method for multiplexing transmissions supporting different waveforms.
  • a comb-shaped spaced pilot transmission structure is used, and terminals using different waveforms are supported at the same frequency.
  • MU-MIMO transmission on the domain resource, or the terminal using different waveforms works in the adjacent short TTI (Transmission Time Interval) but multiplexes the transmission pilot on the same symbol, thereby improving uplink resource utilization. rate.
  • the structure is a time slot, in which the fourth symbol is pre-defined or configured to transmit pilot symbols.
  • Terminal A uses CP-OFDM for PUSCH (Physical Uplink Sharing Channel).
  • the channel may be pre-arranged or the base station may pre-configure the comb interval or the number of combs to be 3, that is, for the pilot of one PUSCH transmission, every 2 RE (Resource Element, resource element) mapping, that is, for one RB (Resource)
  • resource block, RE0, 2, 4, 6, 8, 10 may be a set of pilot positions, and RE1, 3, 5, 7, 9, 11 may be another set of pilot positions, and different terminal guides
  • the frequency can be transmitted in FDM on the 4th symbol.
  • In one RB there are two pilot frequency domain start positions, as shown in Figure 5-1.
  • the scheduling terminal A Sending UL grant1 to the terminal A (that is, the downlink control channel carrying the uplink scheduling grant), the scheduling terminal A transmits the PUSCH1 on the first four symbols and the RB1 ⁇ 2; the base station determines in advance the frequency that the pilot of the terminal A can use according to the scheduling situation.
  • the start position of the domain is notified to the terminal through the first indication field in the UL grant1 (of course, it may be notified to the terminal by other means, and will not be described again, the same below); for example, determining the frequency domain start position of the pilot of the terminal A
  • the phase 1 bit first indication field in the UL grant1 indicates “0”, and the indicated correspondence relationship is as shown in Table 1 (Table 1 is merely an example, and other correspondences are also included in the present invention. Inside).
  • Pilot frequency domain start position first indication field in UL grant The indicated frequency domain start position 0 First frequency domain start position
  • the terminal when the first indication field of the pilot frequency domain start position in the UL grant is “0”, the terminal starts to map the pilot from the first frequency domain start position; when the pilot frequency domain start position in the UL grant is When an indication field is "1", the terminal maps the pilot from the start position of the second frequency domain.
  • the base station may notify the PUSCH2 of the second frequency domain start position by using a notification manner similar to the foregoing PUSCH1.
  • the pilot is transmitted, so that different PUSCH transmissions multiplex the transmission pilots on the same symbol, as shown in FIG. 5-2, wherein when different PUSCHs correspond to different terminals, the same or different waveforms can be used.
  • the base station sends a UL grant1 to the terminal A, and the scheduling terminal A transmits the PUSCH1 on the first four symbols and the RB1 ⁇ 2, and the first indication field in the UL grant1 indicates "0", indicating that the pilot of the PUSCH1 is transmitting the pilot.
  • the first frequency domain start position on the symbol starts to be mapped according to the comb mode, and the second indication field in the UL grant1 indicates "10", indicating that the data of the PUSCH1 can start at the second frequency domain start position on the transmitted pilot symbol.
  • Map according to the comb mode as shown in Figure 5-3.
  • the base station may further determine that the data of the PUSCH1 does not use the transmission pilot.
  • the resource on the symbol is indicated by the second indication field in the UL grant1 indicating "00", as shown in Figure 5-2.
  • the base station sends the UL grant2, and the terminal 4 or B is scheduled in the last 4 symbols.
  • the first indicator field in the UL grant2 indicates "1", and the pilot of the PUSCH2 is mapped on the symbol of the transmission pilot in the second frequency domain starting position according to the comb mode, in the UL grant2.
  • the second indication field in the UL grant needs to be extended, for each RB or subband.
  • Corresponding indication information is needed to indicate whether the resource transmission data on the symbol of the transmission pilot can be used in the RB or subband and the frequency domain start position of the resource used if it can be used.
  • the base station transmits the UL grant1 scheduling terminal A to transmit PUSCH1 on 7 symbols and RB1 ⁇ 2, and the first indication field in UL grant1 indicates "0", indicating that terminal A uses the first frequency domain starting position to transmit pilot; B transmits the uplink using the DFT-S-OFDM waveform, and the base station transmits the UL grant2 scheduling terminal B to transmit PUSCH2 on 7 symbols and RB1 ⁇ 2, that is, terminal A and terminal B perform MU-MIMO transmission on the same resource, UL grant2
  • the first indication field indicates “0”, indicating that the terminal B uses the first frequency domain starting position to transmit the pilot. At this time, the pilot transmission resources of the terminal A and the terminal B are the same, starting with the starting position of the first frequency domain.
  • the resource corresponding to the second frequency domain start position on the symbol of the transmission pilot may be directly agreed or indicated by the second indication field in the UL grant, and the resources are not used for data transmission for the terminals A and B, as shown in FIG. 5 5; if there is still one PUSCH3 on the subsequent symbol, and the PUSCH1 and PUSCH2 need to multiplex the transmission pilot on the 4th symbol, the second frequency domain start position may be indicated to the PUSCH3 by scheduling the UL grant3 of the PUSCH3. For its pilot transmission, as shown in FIG.
  • the base station transmits the UL grant1 scheduling terminal A to transmit PUSCH1 on 7 symbols and RB1 ⁇ 2, and the first indication field in UL grant1 indicates "0", indicating that terminal A uses the first frequency domain starting position to transmit pilot; B transmits the uplink using the DFT-S-OFDM waveform, and the base station transmits the UL grant2 scheduling terminal B to transmit PUSCH2 on 7 symbols and RB1 ⁇ 2, that is, terminal A and terminal B perform MU-MIMO transmission on the same resource, UL grant2
  • the first indication field indicates "1", indicating that the terminal B uses the second frequency domain starting position to transmit the pilot.
  • the pilot transmission resources FDM of the terminal A and the terminal B are multiplexed on the same symbol, and may not be used differently.
  • Cyclic shift and / or orthogonal sequence (of course, use is also possible), because the pilot of terminal A and terminal B can be distinguished on the resource; as shown in Figure 5-8; in this case, if comb If the interval is increased, for example, 3 or more, there may be remaining frequency domain start positions, which may be used for other PUSCHs that multiplex the transmission pilots on the 4th symbol, or It is also possible to start in these frequency domains without other PUSCHs. Opposite the corresponding resources when conducting transmission frequency, the frequency domain starting position of the resource corresponding to the terminal A indicates for data transmission.
  • the data can use the second frequency domain start position on the symbol of the transmission pilot, and the data can be mapped on the first to third symbols and the fourth symbol.
  • terminal A is based on data
  • the available resources are used to determine the coding and rate matching of the data, and the rate-matched data is mapped to the available resources of the data for transmission; the process of receiving the UL grant by another terminal and transmitting or receiving the other UL grant by the terminal A is similar to the above, and is not described again. .
  • the base station receives the PUSCH1 transmitted by the terminal A and the pilot information of the PUSCH1 on the corresponding resource according to the scheduling of the UL grant1, and receives the other UL grants in the same manner.
  • PUSCH2 may be a CP-OFDM or DFT-S-OFDM waveform; if PUSCH2 adopts a DFT-S-OFDM waveform, in order to ensure single carrier characteristics, it is always agreed that data is not mapped on the symbol of the transmission pilot. Therefore, the second indicator field may not be included in the UL grant2, or the second indicator field is always assumed to indicate "00" when the second indicator field is included; in one embodiment, whether the UL grant includes the second indication
  • the domain may depend on the waveform used by the terminal for uplink, if it is DFT-s-OFDM, it is not included, and if it is CP-OFDM, it is included.
  • the second indication field in the UL grant 2 may also only notify whether to use or not using 1-bit information. If the notification is used, which frequency domain start position is used may be obtained by other means (for example, implicitly obtained, pre-agreed In addition to being used for pilot transmission, the rest can be used for data transmission, or resources corresponding to the start of the next frequency domain of the pilot for data transmission, etc.).
  • only one terminal is configured with only one frequency domain starting position on the symbol of the transmission pilot, and one terminal may be configured to be more than one frequency domain starting position on the symbol of the transmission pilot.
  • mapping is performed independently in each pilot mapping resource group, and pilot sequences in each pilot mapping resource group may be independently generated using different cyclic shifts and/or orthogonal sequences, or may be based only on one guide.
  • the frequency mapping resource group is generated and copied in another pilot mapping resource group, that is, the same sequence is transmitted in different pilot mapping resource groups.
  • pilots determined by multiple frequency domain starting positions may also be used.
  • the terminal generates a pilot sequence for the resource size; for example, in Embodiment 3, the terminal A can be configured to use the first frequency domain starting position and the second frequency
  • the pilot station transmits the pilot.
  • the first indicator field in the UL grant may be extended, and the pilot sequence indicating the multiple frequency domain start positions is supported, and the pilot sequence transmitted in the first frequency domain start position needs to be connected to the terminal.
  • terminal A performs MU-MIMO transmission, so it needs to be independent of the pilot sequence transmitted at the starting position of the second frequency domain, that is, terminal A can generate one pilot sequence of length 12, which is duplicated into two, respectively in two
  • the transmission is started at the beginning of the frequency domain, and the terminal can independently generate two pilot sequences of length 12, which are respectively transmitted at the starting positions of the two frequency domains, as shown in FIG. 5-9, and of course, the terminal can A pilot sequence of length 24 is directly generated and mapped to a frequency domain resource set composed of two frequency domain resource start positions in order of frequency domain.
  • only the comb interval or the number of combs is 2, and the values of other comb intervals or combs are, for example, as shown in FIG. 7, and the implementation method is similar to the above embodiment.
  • only the number of bits of the first indication field and the second indication field that may be needed may change, for example, it may indicate that more than one idle frequency domain start position is used for transmitting data by the terminal using CP-OFDM. ,No longer.
  • a determining unit 801 configured to determine a frequency domain starting position of the pilot, where the terminal is a terminal that performs uplink transmission by using CP-OFDM;
  • the candidate value of the starting position of the frequency domain is K, K ⁇ [0, N-1], K is an integer, and N is the comb interval, and N is a positive integer.
  • the symbol of the transmission pilot is one or more symbols determined by the terminal according to configuration signaling sent by the base station.
  • the determining unit 801 is specifically configured to: determine the cyclic shift value and/or the orthogonal sequence according to a pre-arrangement with the base station; or
  • the comb interval is obtained by the terminal according to configuration signaling sent by the base station.
  • the pilot acquisition unit 902 is configured to acquire, according to the comb interval and the determined frequency domain start position, the pilot of the terminal on the symbol of the terminal transmission pilot.
  • the determining unit 901 is further configured to obtain, according to the following method, the pilot that is mapped on a symbol of a transmission pilot: determining a cyclic shift value and/or an orthogonal sequence of the pilot sequence; The pilot is obtained by cyclically shifting values and/or orthogonal sequences.
  • the frequency domain starting position of each terminal pilot is pre-arranged by the base station and each terminal;
  • the symbol of the transmission pilot is one or more symbols pre-agreed by the base station and each terminal; or
  • the comb interval is pre-arranged for each terminal of the base station; or the comb interval is determined by the base station, and is sent to each terminal by using configuration signaling.
  • another terminal provided by the embodiment of the present application includes:
  • a memory 620 configured to store program instructions
  • CP-OFDM cyclic prefix orthogonal frequency division multiplexing
  • the pilots mapped onto the symbols are transmitted by the transceiver 610 to the base station.
  • the processor 600 further has a function of invoking the program instructions stored in the memory 620, and performs the function of any of the uplink transmission methods provided by the embodiments of the present application according to the obtained program, similar to the corresponding content in the foregoing embodiment. I will not repeat them here.
  • the processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 600 in performing operations.
  • the processor 600 may be a CPU (Central Embedded Device), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). , complex programmable logic devices).
  • CPU Central Embedded Device
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • CPLD Complex Programmable Logic Device
  • the processor 500 is configured to invoke a program instruction stored in the memory 520, and execute according to the obtained program:
  • the pilot of the terminal is acquired by the transceiver 510 on the symbol of the terminal transmission pilot.
  • the transceiver 510 is configured to receive and transmit data under the control of the processor 500.
  • the processor 504 is configured to invoke a program instruction stored in the memory, and execute according to the obtained program:
  • the transceiver 501 is configured to receive and transmit data under the control of the processor 504.
  • the processor 504 further has a function of invoking the program instruction stored in the memory 505, and performs the function of any of the uplink transmission methods provided by the embodiment of the present application according to the obtained program, similar to the corresponding content in the foregoing embodiment. I will not repeat them here.
  • the processor 504 is responsible for managing the bus 506 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the memory 505 can be used to store data used by the processor 504 when performing operations.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明涉及通信技术领域,尤其涉及一种上行传输方法、终端及基站,用以为支持CP-OFDM波形的终端提供一种导频传输方案,包括:终端确定导频的频域起始位置,所述终端为使用CP-OFDM进行上行传输的终端;根据梳状间隔及确定的频域起始位置,在传输导频的符号上映射导频;以及,将映射在符号上的导频发送至基站。本发明实施例给出了一种使用CP-OFDM进行上行传输的终端在上行方向在相同符号上映射导频及复用传输导频的方案,由于采用梳状间隔在符号上映射导频,可以实现在一个符号上映射一个终端的多个导频序列,或者是在一个符号上映射不同终端的多个导频序列,实现支持多终端复用传输导频,可提高上行资源利用率。

Description

一种上行传输方法、终端及基站
本申请要求在2017年1月6日提交中国专利局、申请号为201710011427.5、发明名称为“一种上行传输方法、终端及基站”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域,尤其涉及一种上行传输方法、终端及基站。
背景技术
随着移动通信业务需求的发展变化,ITU(International Telecommunication Union,国际电信联盟)和3GPP等组织都开始研究新的无线通信系统(例如5G系统)。新的无线通信系统在上行传输上可以支持DFT-S-OFDM(discrete Fourier transform spread Orthogonal Frequency Division Multiplexing,基于傅里叶变换扩展的正交频分复用),也可以支持CP-OFDM(Cyclic prefix Orthogonal Frequency Division Multiplexing,循环前缀正交频分复用)波形,不同的波形如何复用传输还没有相关方案。
LTE(Long Term Evolution,长期演进)系统中,上行为保证单载波特性,使用DFT-S-OFDM波形。导频(DMRS(Demodulation Reference Signal,解调参考信号))与数据以TDM(Time Division Multiplexing,时分复用)方式在不同的符号上传输,如图1所示。
LTE系统中上行传输都是以子帧为单位的,一个子帧的长度为1ms,上行不使用OFDM波形,因此并未定义相关DMRS pattern。在新的无线通信系统中:上行传输的长度不限于1ms,可以为短于1ms的传输,例如几个符号长度的传输;传输长度也可能随着业务需求而发生改变;LTE DFT-S-OFDM波形的导频传输方案在传输符号数减少的情况下导频开销过大;此外,上行可以支持DFT-S-OFDM波形也可以支持CP-OFDM波形,这两种波形可以单独工作也可以复用在一起工作,例如支持使用不同波形的终端在相同频域资源上进行MU-MIMO(Multi-User Multiple-Input Multiple-Output,多用户多入多出)传输,或者支持使用不同波形的终端工作在相邻的短TTI中但在同一个符号上复用传输导频,从而提高上行资源利用率。
目前,对于支持CP-OFDM波形的终端如何进行导频的发送,以及如何支持系统的中的多种不同波形在相同资源上复用传输还没有相关解决方案。
发明内容
本发明提供一种上行传输方法、终端及基站,用以为支持CP-OFDM波形的终端提供一种导频传输方案。
第一方面,本发明实施例提供一种上行传输方法,包括:
终端确定导频的频域起始位置,所述终端为使用CP-OFDM进行上行传输的终端;
所述终端根据梳状间隔及确定的频域起始位置,在传输导频的符号上映射导频;
所述终端将映射在符号上的导频发送至基站。
可选地,所述终端确定导频的频域起始位置,包括:
所述终端根据与所述基站的预先约定,确定导频的频域起始位置;或者
所述终端根据所述基站下发的配置信令,确定导频的频域起始位置。
可选地,所述频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为所述梳状间隔,N为正整数。
可选地,所述传输导频的符号为根据所述终端与所述基站预先约定的一个或多个符号;或者
所述传输导频的符号为所述终端根据所述基站下发的配置信令确定的一个或多个符号。
可选地,所述终端根据下列方法得到在传输导频的符号上映射的所述导频:
所述终端确定导频序列的循环移位值和/或正交序列;
所述终端根据所述循环移位值和/或正交序列,生成所述导频。
可选地,所述终端确定导频序列的循环移位值和/或正交序列,包括:
所述终端根据与所述基站的预先约定,确定所述循环移位值和/或正交序列;或者
所述终端根据所述基站下发的配置信令,确定所述循环移位值和/或正交序列。
可选地,所述频域起始位置为多个;所述终端根据梳状间隔及确定的频域起始位置,在传输导频的符号上映射导频,包括:
所述终端根据每个频域起始位置及所述梳状间隔,在传输导频的符号上分别映射多个导频序列。
可选地,所述方法还包括:
所述终端确定在所述传输导频的符号上不进行任何数据传输;或者
所述终端确定所述传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在所述传输导频的符号上映射数据。
可选地,所述终端确定所述传输导频的符号上用于传输数据的频域起始位置,包括:
所述终端根据与所述基站的预先约定,确定所述用于传输数据的频域起始位置;或者
所述终端根据所述基站下发的配置信令,确定所述用于传输数据的频域起始位置。
可选地,所述梳状间隔为所述终端与所述基站预先约定;或者
所述梳状间隔为所述终端根据所述基站下发的配置信令得到。
第二方面,本发明实施例提供一种上行传输方法,包括:
所述基站确定终端的导频的频域起始位置,所述终端为使用CP-OFDM进行上行传输的终端;
所述基站根据梳状间隔及确定的频域起始位置,在所述终端传输导频的符号上获取所述终端的导频。
可选地,所述导频的频域起始位置为所述基站与所述终端预先约定;或者
所述导频的频域起始位置为所述基站预先确定并通过配置信令下发至所述终端。
可选地,所述频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为所述梳状间隔,N为正整数。
可选地,所述传输导频的符号为所述基站与所述终端预先约定的一个或多个符号;或者
所述传输导频的符号为所述基站确定,并通过配置信令通知所述终端的一个或多个符号。
可选地,所述基站根据下列方法得到在传输导频的符号上映射的所述导频:
所述基站确定导频序列的循环移位值和/或正交序列;
所述基站根据所述循环移位值和/或正交序列,获取所述导频。
可选地,所述循环移位值和/或正交序列为所述基站与所述终端预先约定;或者
所述循环移位值和/或正交序列为所述基站确定,并通过配置信令通知所述终端。
可选地,所述频域起始位置为多个;所述基站根据梳状间隔及确定的频域起始位置,在所述终端传输导频的符号上获取所述终端的导频,包括:
所述基站根据每个频域起始位置及所述梳状间隔,在所述传输导频的符号上分别获取多个导频序列。
可选地,所述方法还包括:
所述基站确定在所述传输导频的符号上不进行任何数据传输;或者
所述基站确定所述传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在所述传输导频的符号上获取数据。
可选地,所述用于传输数据的频域起始位置为所述终端与所述基站预先约定;或者
所述用于传输数据的频域起始位置为所述基站确定,并通过配置信令下发至所述终端。
可选地,所述梳状间隔为所述基站与所述终端预先约定;或者
所述梳状间隔为所述基站确定,并通过配置信令下发至所述终端。
第三方面,本发明实施例提供一种上行传输方法,包括:
基站确定多个终端中的每个终端的导频的频域起始位置,所述多个终端中的至少一个终端为使用CP-OFDM进行上行传输的终端,所述多个终端中的至少一个终端为使用基于傅里叶扩展的正交频分复用DFT-S-OFDM进行上行传输的终端,所述多个终端的上行传输资源在频域上存在重叠;
所述基站根据梳状间隔及确定的每个频域起始位置,在每个终端传输导频的符号上获取每个终端的导频。
可选地,所述每个终端导频的频域起始位置为所述基站与每个终端预先约定;或者
所述导频的频域起始位置为所述基站预先确定并通过配置信令下发至每个终端。
可选地,所述每个终端的频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为所述梳状间隔,N为正整数。
可选地,所述传输导频的符号为所述基站与每个终端预先约定的一个或多个符号;或者
所述传输导频的符号为所述基站确定,并通过配置信令通知每个终端的一个或多个符号。
可选地,所述基站根据下列方法得到在传输导频的符号上映射的所述导频:
所述基站确定每个终端的导频序列的循环移位值和/或正交序列;
所述基站根据每个终端的循环移位值和/或正交序列,获取每个终端的导频。
可选地,所述每个终端的循环移位值和/或正交序列为所述基站与每个终端预先约定;或者
所述每个终端的循环移位值和/或正交序列为所述基站确定,并通过配置信令通知每个终端。
可选地,所述频域起始位置为多个;所述基站根据梳状间隔及确定的每个终端的频域起始位置,在每个终端传输导频的符号上获取每个终端的导频,包括:
针对任一终端,所述基站根据所述终端的每个频域起始位置及所述梳状间隔,在所述传输导频的符号上分别获取所述终端的多个导频序列。
可选地,所述方法还包括:
针对任一终端,所述基站确定在所述终端的传输导频的符号上不进行任何数据传输;或者,所述基站确定所述终端的传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在所述终端的传输导频的符号上获取数据。
可选地,所述用于传输数据的频域起始位置为所述终端与所述基站预先约定;或者
所述用于传输数据的频域起始位置为所述基站确定,并通过配置信令下发至所述终端。
可选地,所述梳状间隔为所述基站每个终端预先约定;或者
所述梳状间隔为所述基站确定,并通过配置信令下发至每个终端。
第四方面,本发明实施例提供一种终端,包括:
确定单元,用于确定导频的频域起始位置,所述终端为使用CP-OFDM进行上行传输的终端;
导频映射单元,用于根据梳状间隔及确定的频域起始位置,在传输导频的符号上映射导频;
发送单元,用于将映射在符号上的导频发送至基站。
可选地,所述确定单元,具体用于:
根据与所述基站的预先约定,确定导频的频域起始位置;或者
根据所述基站下发的配置信令,确定导频的频域起始位置。
可选地,所述频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为所述梳状间隔,N为正整数。
可选地,所述传输导频的符号为根据所述终端与所述基站预先约定的一个或多个符号;或者
所述传输导频的符号为所述终端根据所述基站下发的配置信令确定的一个或多个符号。
可选地,所述确定单元,还用于根据下列方法得到在传输导频的符号上映射的所述导频:
确定导频序列的循环移位值和/或正交序列;
根据所述循环移位值和/或正交序列,生成所述导频。
可选地,所述确定单元,具体用于:根据与所述基站的预先约定,确定所述循环移位值和/或正交序列;或者
所述终端根据所述基站下发的配置信令,确定所述循环移位值和/或正交序列。
可选地,所述频域起始位置为多个;所述导频映射单元,具体用于:根据每个频域起始位置及所述梳状间隔,在传输导频的符号上分别映射多个导频序列。
可选地,所述终端还包括数据映射单元,用于:
确定在所述传输导频的符号上不进行任何数据传输;或者
确定所述传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在所述传输导频的符号上映射数据。
可选地,所述数据映射单元,具体用于:根据与所述基站的预先约定,确定所述用于传输数据的频域起始位置;或者
根据所述基站下发的配置信令,确定所述用于传输数据的频域起始位置。
可选地,所述梳状间隔为所述终端与所述基站预先约定;或者
所述梳状间隔为所述终端根据所述基站下发的配置信令得到。
第五方面,本发明实施例提供一种基站,包括:
确定单元,用于确定终端的导频的频域起始位置,所述终端为使用CP-OFDM进行上行传输的终端;
导频获取单元,用于根据梳状间隔及确定的频域起始位置,在所述终端传输导频的符号上获取所述终端的导频。
可选地,所述导频的频域起始位置为所述基站与所述终端预先约定;或者
所述导频的频域起始位置为所述基站预先确定并通过配置信令下发至所述终端。
可选地,所述频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为所述梳状间隔,N为正整数。
可选地,所述传输导频的符号为所述基站与所述终端预先约定的一个或多个符号;或者
所述传输导频的符号为所述基站确定,并通过配置信令通知所述终端的一个或多个符号。
可选地,所述确定单元,还用于根据下列方法得到在传输导频的符号上映射的所述导频:
确定导频序列的循环移位值和/或正交序列;
根据所述循环移位值和/或正交序列,获取所述导频。
可选地,所述循环移位值和/或正交序列为所述基站与所述终端预先约定;或者
所述循环移位值和/或正交序列为所述基站确定,并通过配置信令通知所述终端。
可选地,所述频域起始位置为多个;所述导频获取单元,具体用于:根据每个频域起始位置及所述梳状间隔,在所述传输导频的符号上分别获取多个导频序列。
可选地,所述基站还包括数据获取单元,用于:
确定在所述传输导频的符号上不进行任何数据传输;或者
确定所述传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在所述传输导频的符号上获取数据。
可选地,所述用于传输数据的频域起始位置为所述终端与所述基站预先约定;或者
所述用于传输数据的频域起始位置为所述基站确定,并通过配置信令下发至所述终端。
可选地,所述梳状间隔为所述基站与所述终端预先约定;或者
所述梳状间隔为所述基站确定,并通过配置信令下发至所述终端。
第六方面,本发明实施例提供一种基站,包括:
确定单元,用于确定多个终端中的每个终端的导频的频域起始位置,所述多个终端中的至少一个终端为使用CP-OFDM进行上行传输的终端,所述多个终端中的至少一个终端为使用基于傅里叶扩展的正交频分复用DFT-S-OFDM进行上行传输的终端,所述多个终端的上行传输资源在频域上存在重叠;
导频获取单元,用于根据梳状间隔及确定的每个频域起始位置,在每个终端传输导频的符号上获取每个终端的导频。
可选地,所述每个终端导频的频域起始位置为所述基站与每个终端预先约定;或者
所述导频的频域起始位置为所述基站预先确定并通过配置信令下发至每个终端。
可选地,所述每个终端的频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为所述梳状间隔,N为正整数。
可选地,所述传输导频的符号为所述基站与每个终端预先约定的一个或多个符号;或者
所述传输导频的符号为所述基站确定,并通过配置信令通知每个终端的一个或多个符号。
可选地,所述确定单元,还用于根据下列方法得到在每个终端传输导频的符号上映射的所述导频:
确定每个终端的导频序列的循环移位值和/或正交序列;
根据每个终端的循环移位值和/或正交序列,获取每个终端的导频。
可选地,所述每个终端的循环移位值和/或正交序列为所述基站与每个终端预先约定;或者
所述每个终端的循环移位值和/或正交序列为所述基站确定,并通过配置信令通知每个终端。
可选地,所述频域起始位置为多个;所述导频获取单元,具体用于:针对任一终端,根据所述终端的每个频域起始位置及所述梳状间隔,在所述传输导频的符号上分别获取所述终端的多个导频序列。
可选地,所述基站还包括数据获取单元,用于:
针对任一终端,确定在所述终端的传输导频的符号上不进行任何数据传输;或者,确定所述终端的传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在所述终端的传输导频的符号上获取数据。
可选地,所述用于传输数据的频域起始位置为所述终端与所述基站预先约定;或者
所述用于传输数据的频域起始位置为所述基站确定,并通过配置信令下发至所述终端。
可选地,所述梳状间隔为所述基站每个终端预先约定;或者
所述梳状间隔为所述基站确定,并通过配置信令下发至每个终端。
第七方面,本申请实施例提供的另一种终端,包括:
存储器,用于存储程序指令;
处理器,用于调用所述存储器中存储的程序指令,按照获得的程序执行:
确定导频的频域起始位置,所述终端为使用循环前缀正交频分复用CP-OFDM进行上行传输的终端;
根据梳状间隔及确定的频域起始位置,在传输导频的符号上映射导频;
将映射在符号上的导频发送至基站。
第八方面,本申请实施例提供的另一种基站,包括:
存储器,用于存储程序指令;
处理器,用于调用所述存储器中存储的程序指令,按照获得的程序执行:
确定终端的导频的频域起始位置,所述终端为使用CP-OFDM进行上行传输的终端;
根据梳状间隔及确定的频域起始位置,在所述终端传输导频的符号上获取所述终端的导频。
第九方面,本申请实施例提供的另一种基站,包括:
存储器,用于存储程序指令;
处理器,用于调用所述存储器中存储的程序指令,按照获得的程序执行:
确定多个终端中的每个终端的导频的频域起始位置,所述多个终端中的至少一个终端为使用CP-OFDM进行上行传输的终端,所述多个终端中的至少一个终端为使用基于傅里叶扩展的正交频分复用DFT-S-OFDM进行上行传输的终端,所述多个终端的上行传输资源在频域上存在重叠;
根据梳状间隔及确定的每个频域起始位置,在每个终端传输导频的符号上获取每个终端的导频。
第十方面,本申请实施例提供的一种计算机存储介质,存储有计算机可执行指令,所述计算机可执行指令用于使所述计算机执行本申请实施例提供的任一所述的方法。
本发明实施例,终端确定导频的频域起始位置,所述终端为使用CP-OFDM进行上行传输的终端;根据梳状间隔及确定的频域起始位置,在传输导频的符号上映射导频;以及,将映射在符号上的导频发送至基站。本发明实施例给出了一种使用CP-OFDM进行上行传输的终端在上行方向在相同符号上映射导频及复用传输导频的方案,由于采用梳状间隔在符号上映射导频,从而可以实现在一个符号上映射一个终端的多个导频序列,或者是在一个符号上映射不同终端的多个导频序列,实现支持多终端复用传输导频,当不同的终端具有不同的waveform(波形)时,可以实现不同的waveform在相同的资源上的复用传输,可提高上行资源利用率。
附图说明
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简要介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域的普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为现有技术LTE PUSCH导频结构示意图;
图2为本发明实施例提供的上行传输方法流程图;
图3为本发明实施例提供的上行传输方法流程图;
图4为本发明实施例提供的上行传输方法流程图;
图5-1为本发明实施例提供的第一种导频映射示意图;
图5-2为本发明实施例提供的第二种导频映射示意图;
图5-3为本发明实施例提供的第三种导频映射示意图;
图5-4为本发明实施例提供的第四种导频映射示意图;
图5-5为本发明实施例提供的第五种导频映射示意图;
图5-6为本发明实施例提供的第六种导频映射示意图;
图5-7为本发明实施例提供的第七种导频映射示意图;
图5-8为本发明实施例提供的第八种导频映射示意图;
图5-9为本发明实施例提供的第九种导频映射示意图;
图6为本发明实施例提供的第十种导频映射示意图;
图7为本发明实施例提供的多个频域起始位置示意图;
图8为本发明实施例提供的终端示意图;
图9为本发明实施例提供的第一种基站示意图;
图10为本发明实施例提供的第二种基站示意图;
图11为本发明实施例提供的另一终端示意图;
图12为本发明实施例提供的第三种基站示意图;
图13为本发明实施例提供的第四种基站示意图。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚,下面将结合附图对本发明作进一步地详细描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。
下面结合说明书附图对本发明实施例作进一步详细描述。
本申请实施例可以适用于4G(第四代移动通信系统)演进系统,如LTE(Long Term Evolution,长期演进)系统,或者还可以为5G(第五代移动通信系统)系统,如采用新型无线接入技术(new radio access technology,New RAT)的接入网;CRAN(Cloud Radio Access Network,云无线接入网)等通信系统。以下,对本申请中的部分用语进行解释说明,以便于本领域技术人员理解。
1)、终端,又称之为用户设备(User Equipment,UE),是一种向用户提供语音和/或数据连通性的设备,例如,具有无线连接功能的手持式设备、车载设备等。常见的终端例如包括:手机、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device,MID)、可穿戴设备,例如智能手表、智能手环、计步器等。
2)、基站,又称为无线接入网(Radio Access Network,RAN)设备是一种将终端接入到无线网络的设备,包括但不限于:演进型节点B(evolved Node B,eNB)、无线网络控制器(radio network controller,RNC)、节点B(Node B,NB)、基站控制器(Base Station Controller,BSC)、基站收发台(Base Transceiver Station,BTS)、家庭基站(例如,Home evolved NodeB,或Home Node B,HNB)、基带单元(BaseBand Unit,BBU)。此外,还可以包括Wifi接入点(Access Point,AP)等。
3)、“多个”是指两个或两个以上。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
4)、本申请实施例中,符号的意义包含但不限于正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)符号、稀疏码分多址技术(Sparse Code Multiplexing Access,SCMA)符号、过滤正交频分复用(Filtered Orthogonal Frequency Division Multiplexing,F-OFDM)符号、非正交多址接入(Non-Orthogonal Multiple Access,NOMA)符号、单载波频分多址(Single-carrier Frequency-Division Multiple Access,SC-FDMA),基于傅里叶变换扩展的正交频分复用(discrete Fourier transform spread Orthogonal Frequency Division Multiplexing,DFT-S-OFDM),循环前缀正交频分复用(Cyclic prefix Orthogonal Frequency Division Multiplexing,CP-OFDM)和图样分割多址接入(Pattern Division Multiple Access,PDMA),具体可以根据实际情况确定,在此不再赘述。
如图2所示,为本发明实施例提供的上行传输方法,该方法执行主体为终端,包括:
步骤201、终端确定导频的频域起始位置,所述终端为使用CP-OFDM进行上行传输的终端;
步骤202、终端根据梳状间隔及确定的频域起始位置,在传输导频的符号上映射导频;
步骤203、终端将映射在符号上的导频发送至基站。
该实施例中,终端为配置或约定使用CP-OFDM进行上行传输的终端。
上述步骤201中,终端确定导频的频域起始位置,具体地,所述终端根据与所述基站的预先约定,确定导频的频域起始位置;或者是所述终端根据所述基站下发的配置信令,确定导频的频域起始位置。
其中,所述频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为梳状间隔,N为正整数,其中,梳状间隔也可以称为梳(comb)位置或索引。
上述步骤202中,终端根据梳状间隔及确定的频域起始位置,在传输导频的符号上映射导频,其中,传输导频的符号为根据终端与基站预先约定的一个或多个符号,或者为终端根据基站下发的配置信令确定的一个或多个符号。
即,传输导频的符号可以是一个符号,也可以是多个符号,并且可以是预先约定的固定位置的符号,或者是根据基站下发的配置信令指定的符号。
并且,在传输导频的符号上映射的导频是根据下列方式得到的:
终端确定导频序列的循环移位值和/或正交序列,然后根据所述循环移位值和/或正交序列,生成导频。
其中,终端确定导频序列的具体方式为:终端根据与基站的预先约定,确定所述循环移位值和/或正交序列;或者终端根据基站下发的配置信令,确定所述循环移位值和/或正交序列。
所述梳状间隔具体表现为:导频序列中的每个元素在一个符号上的频域资源上的映射间隔(例如映射的子载波编号之间的差)或导频复用因子(即在一个资源块上可以频分复用传输多个不同上行传输的导频)。
所述梳状间隔为终端与基站预先约定;或者梳状间隔为终端根据基站下发的配置信令得到。
当频域起始位置为多个时,终端根据每个频域起始位置及所述梳状间隔,在传输导频的符号上分别映射多个导频序列,并且,对应不同频域起始位置的导频序列可以是独立产生(即可以对应不同的循环移位值和/或正交序列),或者为相同序列。
并且,终端确定在传输导频的符号上不进行任何数据传输;或者终端确定传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在传输导频的符号上映射数据。
其中,终端通过配置信令的配置或者与基站的预先约定,确定传输导频的符号上是否存在用于传输数据的资源。
若确定传输导频的符号存在用于传输数据的资源,进一步地,终端根据与基站的预先约定,确定用于传输数据的频域起始位置;或者终端根据基站下发的配置信令,确定所述用于传输数据的频域起始位置。
所述配置信令的配置或者与基站的预先约定可以是针对所述终端被调度的所有频域 资源有效,或者是针对所述终端被调度的频域资源中的每个资源块或每个子带独立配置或约定。
上述提到的配置信令,可以为高层信令或者承载上行调度许可的下行控制信道(即使用上行DCI(Downlink Control Information,下行控制信息)格式的下行控制信道)中的指示域。
上述步骤203中,终端将映射在符号上的导频发送至基站。
本发明实施例,终端确定导频的频域起始位置,所述终端为使用CP-OFDM进行上行传输的终端;根据梳状间隔及确定的频域起始位置,在传输导频的符号上映射导频;以及,将映射在符号上的导频发送至基站。本发明实施例给出了一种使用CP-OFDM进行上行传输的终端在上行方向映射导频及传输导频的方案,由于采用梳状间隔在符号上映射导频,从而可以实现在一个符号上映射一个终端的多个导频序列,或者是在一个符号上映射不同终端的多个导频序列,实现支持多终端复用传输导频,可提高上行资源利用率。
如图3所述,为本发明实施例提供的上行传输方法,该方法执行主体为基站,包括:
步骤301、基站确定终端的导频的频域起始位置,所述终端为使用CP-OFDM进行上行传输的终端。
步骤302、基站根据梳状间隔及确定的频域起始位置,在所述终端传输导频的符号上获取所述终端的导频。
上述步骤301~步骤302是基站侧的方法流程,其与图2所示的终端侧的方法流程是相对应的。
上述步骤301中,基站确定终端的导频的频域起始位置。其中,终端为使用CP-OFDM进行上行传输的终端。
具体地,所述导频的频域起始位置为基站与终端预先约定;或者所述导频的频域起始位置为基站预先确定并通过配置信令下发至所述终端。
频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为梳状间隔,N为正整数。
所述梳状间隔具体表现为:导频序列中的每个元素在一个符号上的频域资源上的映射间隔(例如映射的子载波编号之间的差)或导频复用因子(即在一个资源块上可以频分复用传输多个不同上行传输的导频)。
所述梳状间隔为终端与基站预先约定;或者梳状间隔为终端根据基站下发的配置信令得到。
上述步骤302中,基站根据梳状间隔及确定的频域起始位置,在所述终端传输导频的符号上获取终端的导频。
其中,所述传输导频的符号为基站与终端预先约定的一个或多个符号;或者所述传输 导频的符号为基站确定,并通过配置信令通知所述终端的一个或多个符号。
具体地,基站根据下列方法得到在传输导频的符号上映射的所述导频:
基站确定导频序列的循环移位值和/或正交序列;根据所述循环移位值和/或正交序列,获取导频。
其中,所述循环移位值和/或正交序列为基站与终端预先约定,或者为基站确定并通过配置信令通知终端。
并且,当频域起始位置为多个时;基站根据每个频域起始位置及所述梳状间隔,在所述传输导频的符号上分别获取多个导频序列。
以及,基站确定在所述传输导频的符号上不进行任何数据传输;或者基站确定传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在所述传输导频的符号上获取数据。
其中,用于传输数据的频域起始位置为终端与基站预先约定;或者,用于传输数据的频域起始位置为基站确定并通过配置信令下发至终端。
本发明实施例,基站接收终端发送的映射在传输导频的符号上的导频,所述终端为使用CP-OFDM进行上行传输的终端;基站确定导频的频域起始位置;基站根据梳状间隔及确定的频域起始位置,获取所述终端的导频。本发明实施例给出了一种使用CP-OFDM进行上行传输的终端在上行方向在相同符号上映射导频及复用传输导频的方案,由于采用梳状间隔在符号上映射导频,从而可以实现在一个符号上映射一个终端的多个导频序列,或者是在一个符号上映射不同终端的多个导频序列,实现支持多终端复用传输导频,当不同的终端具有不同的waveform(波形)时,可以实现不同的waveform在相同的资源上的复用传输,可提高上行资源利用率。
如图4所示,为本发明实施例提供的上行传输方法示意图,该方法执行主体为基站,包括:
步骤401、基站确定多个终端中的每个终端的导频的频域起始位置,所述多个终端中的至少一个终端为使用CP-OFDM进行上行传输的终端,所述多个终端中的至少一个终端为使用基于傅里叶扩展的正交频分复用DFT-S-OFDM进行上行传输的终端,所述多个终端的上行传输资源在频域上存在重叠。
步骤402、基站根据梳状间隔及确定的每个频域起始位置,在每个终端传输导频的符号上获取每个终端的导频。
上述步骤401~步骤402是基站侧的方法流程,其与图3所示的基站侧的方法流程的区别在于:图4所示的方法流程是针对多个终端的上行传输的方法流程,而图3所示的方法流程是针对单个终端的上行传输的方法流程。
上述步骤401中,基站确定多个终端中的每个终端的导频的频域起始位置。
其中,至少有一个终端为使用CP-OFDM进行上行传输的终端,且至少有一个终端为使用DFT-S-OFDM进行上行传输的终端。
具体地,所述导频的频域起始位置为基站与每个终端预先约定;或者所述导频的频域起始位置为基站预先确定并通过配置信令下发至每个终端。
每个终端的频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为梳状间隔,N为正整数。
所述梳状间隔具体表现为:导频序列中的每个元素在一个符号上的频域资源上的映射间隔(例如映射的子载波编号之间的差)或导频复用因子(即在一个资源块上可以频分复用传输多个不同上行传输的导频)。
所述梳状间隔为每个终端与基站预先约定;或者梳状间隔为每个终端根据基站下发的配置信令得到。
上述步骤402中,基站根据梳状间隔及确定的频域起始位置,在每个终端传输导频的符号上获取每个终端的导频。
其中,所述传输导频的符号为基站与每个终端预先约定的一个或多个符号;或者所述传输导频的符号为基站确定,并通过配置信令通知每个终端的一个或多个符号。
具体地,基站根据下列方法得到在传输导频的符号上映射的所述导频:
基站确定每个终端的导频序列的循环移位值和/或正交序列;根据所述循环移位值和/或正交序列,获取每个终端的导频。
其中,所述循环移位值和/或正交序列为基站与每个终端预先约定,或者为基站确定并通过配置信令通知每个终端。
并且,当频域起始位置为多个时;针对任一终端,基站根据所述终端的每个频域起始位置及所述梳状间隔,在所述传输导频的符号上分别获取所述终端的多个导频序列。
以及,针对任一终端,基站确定在所述终端的传输导频的符号上不进行任何数据传输;或者基站确定所述终端的传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在所述终端的传输导频的符号上获取数据。
其中,用于传输数据的频域起始位置为终端与基站预先约定;或者,用于传输数据的频域起始位置为基站确定并通过配置信令下发至终端。
本发明实施例,基站接收多个终端发送的映射在传输导频的符号上的导频,所述多个终端中的至少一个终端为使用CP-OFDM进行上行传输的终端,至少一个终端为使用基于傅里叶扩展的正交频分复用DFT-S-OFDM进行上行传输的终端,所述多个终端的上行传输资源在频域上存在重叠;所述基站确定每个终端的导频的频域起始位置;所述基站根据梳状间隔及确定的每个频域起始位置,获取每个终端的导频。本发明实施例给出了一种使用 CP-OFDM进行上行传输的终端以及使用DFT-S-OFDM进行上行传输的终端,在上行方向在相同符号上映射导频及复用传输导频的方案,由于采用梳状间隔在符号上映射导频,从而可以实现在一个符号上映射一个终端的多个导频序列,或者是在一个符号上映射不同终端的多个导频序列,实现支持多终端复用传输导频,当不同的终端具有不同的waveform时,可以实现不同的waveform在相同的资源上的复用传输,可提高上行资源利用率。
本发明实施例给出一种支持不同波形的复用传输的传输方法,通过对不同的波形定义统一的导频传输结构,采用梳状间隔导频传输结构,支持使用不同波形的终端在相同频域资源上进行MU-MIMO传输,或者支持使用不同波形的终端工作在相邻的短TTI(Transmission Time Interval,传输时间间隔)中但在同一个符号上复用传输导频,从而提高上行资源利用率。
下面结合具体的实施例,对上述终端和基站侧的上行传输方法的具体实施过程做详细介绍。
如图5-1所示,为一个时隙的结构,其中第4个符号被预先定义或被配置为传输导频的符号;终端A使用CP-OFDM进行PUSCH(Physical Uplink Sharing Channel,物理上行共享信道)传输,可以预先约定或者基站预先配置梳状间隔或梳个数为3,即对于一个PUSCH传输的导频,每隔2个RE(Resource Element,资源元素)映射,即对于一个RB(Resource Block,资源块)中,RE0、2、4、6、8、10可以为一组导频位置,RE1、3、5、7、9、11可以为另一组导频位置,不同终端的导频可以在第4个符号上FDM传输,则在一个RB中,存在2个导频的频域起始位置,如图5-1所示。
基站侧:
实现方式1:
向终端A发送UL grant1(即承载上行调度许可的下行控制信道),调度终端A在前4个符号、RB1~2上传输PUSCH1;基站根据调度情况,预先确定终端A的导频可以使用的频域起始位置,并通过UL grant1中的第一指示域通知给终端(当然也可以是其他方式通知给终端,不再赘述,下同);例如确定终端A的导频的频域起始位置为第一频域起始位置,则UL grant1中的相1比特第一指示域指示“0”,指示的对应关系如表1所示(表1仅为示例,其他对应关系也包含在本发明内)。
UL grant中的导频频域起始位置第一指示域 所指示的频域起始位置
0 第一频域起始位置
1 第二频域起始位置
表1
即,当UL grant中的导频频域起始位置第一指示域为“0”时,则终端从第一频域起始位置开始映射导频;当UL grant中的导频频域起始位置第一指示域为“1”时,则终端从第二频域起始位置开始映射导频。
此时,总是假设数据不在传输导频的符号上传输,即传输导频的符号上的第二频域起始位置上的RE资源如果没有其他终端传输导频,则空闲,如图5-1所示。
如果在后4个符号中存在PUSCH2传输(可以是对终端A的,也可以是对其他终端的),则基站可以将第二频域起始位置通过类似上述PUSCH1的通知方式通知给该PUSCH2用于传输其导频,从而实现不同PUSCH传输在同一个符号上复用传输导频,如图5-2所示,其中,当不同PUSCH对应不同终端时,可以使用相同或者不同的波形。
实现方式2:
在向终端A发送UL grant1之前,基站还可以进一步判断在传输导频的符号上是否还存在其他PUSCH的导频复用传输,例如,当后4个符号中不存在其他PUSCH传输(可以是对终端A的,也可以是对其他终端的,下同)时,则基站可以进一步确定将传输导频的符号上的第二频域起始位置通知给终端A用于进行PUSCH1的数据传输,例如UL grant1中的第二指示域通知是否可以使用传输导频的符号上的资源传输数据,以及可以对数据使用的频域起始位置,对应关系如下表2所示(表2仅为示例,其他对应关系也包含在本发明内)。
Figure PCTCN2018075135-appb-000001
表2
具体地,基站向终端A发送UL grant1,调度终端A在前4个符号、RB1~2上传输PUSCH1,UL grant1中的第一指示域指示“0”,表示PUSCH1的导频在传输导频的符号上的第一频域起始位置开始按照comb方式映射,UL grant1中的第二指示域指示“10”,表示PUSCH1的数据可以在传输的导频符号上的第二频域起始位置开始按照comb方式映射,如图5-3所示。
当基站判断在传输导频的符号上还同时存在其他PUSCH的导频复用传输时,例如,当后4个符号中存在其他PUSCH传输时,则基站可以进一步确定PUSCH1的数据不使用传输导频的符号上的资源,并通过UL grant1中的第二指示域指示“00”表示,如图5-2所示,同理,此时基站发送UL grant2,调度终端A或B在后4个符号、RB0和1上传输PUSCH2,UL grant2中的第一指示域指示“1”,表示PUSCH2的导频在传输导频的符号上第二频域起始位置开始按照comb方式映射,UL grant2中的第二指示域指示“00”,指示PUSCH2的数据不使用传输导频的符号上的资源;另一种实现方式,基站可以针对PUSCH1被调度的每个RB或者subband(子带)确定该RB或者subband中在传输导频的符号上是否可以传输数据,例如如图5-4所示,当PUSCH2仅在RB1中与PUSCH1复用导频传输,而在PUSCH1所占用的RB2中,在传输导频的符号上不存在与其他PUSCH复用传输导频,则该RB2中的传输导频的符号上的空闲资源可用来传输PUSCH1的数据,此时需要扩展UL grant中的第二指示域,针对每个RB或subband都需要有对应的指示信息指示该RB或subband中是否可以使用传输导频的符号上的资源传输数据以及如果可以使用时所使用的资源的频域起始位置。
实现方式3:
基站发送UL grant1调度终端A在7个符号上、RB1~2中传输PUSCH1,UL grant1中的第一指示域指示“0”,表示终端A使用第一频域起始位置传输导频;假设终端B使用DFT-S-OFDM波形传输上行,基站发送UL grant2调度终端B在7个符号上、RB1~2中传输PUSCH2,即终端A和终端B在相同资源上进行MU-MIMO传输,UL grant2中的第一指示域指示“0”,表示终端B使用第一频域起始位置传输导频,此时终端A和终端B的导频传输资源相同,都以第一频域起始位置开始,在RB1和2中的偶数RE传输,则需要不同的循环移位和/或正交序列(可以仅使用不同的循环移位或仅使用正交序列,或同时使用两者)保证终端A和终端B的导频正交,从而保证接收端可以在相同的资源上正确解析出终端A和终端B的导频;可以通过预先约定或高层信令配置或UL grant中的第三指示域通知终端A和B产生导频所使用的循环移位值和/或正交序列。
此时,可以直接约定或者通过UL grant中的第二指示域指示传输导频的符号上的第二频域起始位置所对应的资源对于终端A和B是不用于数据传输,如图5-5所示;如果在后续符号上存在还存在一个PUSCH3需要与PUSCH1和PUSCH2在第4个符号上复用传输导频,则第二频域起始位置可以通过调度PUSCH3的UL grant3指示给PUSCH3用于其导频传输,如图5-6所示;如果PUSCH3仅在部分RB上与PUSCH1和PUSCH2资源重叠,可以对PUSCH1和PUSCH2的所有RB都按照上述方式约定或UL grant中的第二指示域指示不在传输导频的符号上的传输数据,对于是用CP-OFDM的PUSCH1,也可以针对每个RB或每个subband指示该RB或subb-band中是用可以在传输导频的符号上的传输数据。
或者,可以对使用CP-OFDM的终端(终端A)直接约定或者通过UL grant中的第二指示域指示传输导频的符号上的第二频域起始位置所对应的资源可用于终端A的数据传输,此时对于使用DFT-S-OFDM的终端(终端B)总是约定或者通过UL grant中的第二指示域指示不能使用传输导频的符号上的第二频域起始位置所对应的资源传输数据,以保证DFT-S-OFDM波形的单载波特性(降低PAPR(PAPR—Peak to Average Power Ratio,峰值平均功率比)/CM),如果是约定的,则UL grant中可以不包含第二指示域;如图5-7所示。
实现方式4:
基站发送UL grant1调度终端A在7个符号上、RB1~2中传输PUSCH1,UL grant1中的第一指示域指示“0”,表示终端A使用第一频域起始位置传输导频;假设终端B使用DFT-S-OFDM波形传输上行,基站发送UL grant2调度终端B在7个符号上、RB1~2中传输PUSCH2,即终端A和终端B在相同资源上进行MU-MIMO传输,UL grant2中的第一指示域指示“1”,表示终端B使用第二频域起始位置传输导频,此时终端A和终端B的导频传输资源FDM复用在同一个符号上,可以不使用不同的循环移位和/或正交序列(当然,使用也是可以的),因为在资源上可以区分终端A和终端B的导频;如图5-8所示;在这种情况下,如果梳状间隔扩大,例如为3或者更大,则还会有剩余的频域起始位置,这些频域起始位置可以用来给其他在第4个符号上复用传输导频的PUSCH使用,或者也可以在没有其他PUSCH需要在这些频域起始位置对应的资源上传输导频时,将这些频域起始位置对应的资源指示给终端A用于数据传输。
终端侧:
终端A接收到UL grant1之后,根据其中的调度信息,以及导频和数据可使用的频域起始位置的指示信息,确定导频的传输资源和数据的传输资源,在相应的传输资源上进行传输,具体方法同基站侧方法1~3;例如确定导频的频域起始位置为第一频域起始位置,梳状间隔为2,RB数为2,则确定导频序列长度为12/2*2=12,产生长度为12的导频序列,如果配置了循环移位值和/或正交序列,导频序列需要根据循环移位值和/或正交序列产生,然后映射在第4个符号上所调度的2个RB中的每个RB中的偶数RE(RE0、2、4、6、8、10)上;例如确定数据不使用传输导频的符号上的资源,则数据只能映射在第1~3个符号上,又例如确定数据可以使用传输导频的符号上的第二频域起始位置,数据可以映射在第1~3个符号上以及第4个符号上的奇数RE(RE1、3、5、7、9、11)上,终端A根据数据的可用资源来确定数据的编码和速率匹配,将速率匹配后的数据映射到数据的可用资源上传输;其他终端接收UL grant并传输或终端A接收其他UL grant并传输的过程同上类似,不再赘述。
基站侧:
基站按照上述UL grant1的调度,在相应的资源上接收终端A发送的PUSCH1以及该 PUSCH1的导频信息;如果还发送了其他UL grant,同样方法进行接收。
上述实现方式2中,PUSCH2可以是CP-OFDM或DFT-S-OFDM波形;如果PUSCH2采用DFT-S-OFDM波形,为了保证单载波特性,则总是约定数据不映射在传输导频的符号上的资源上,因此,UL grant2中可以不包含第二指示域,或者当包含第二指示域时总是假设第二指示域指示“00”;一种实施方式,UL grant中是否包含第二指示域可以取决于终端上行使用的波形,如果为DFT-s-OFDM,则不包含,如果为CP-OFDM,则包含。
上述实施例中,UL grant2中的第二指示域还可以仅用1比特信息仅通知是否使用,如果通知使用,则使用哪个频域起始位置可以通过其他方式获得(例如隐式获得,预先约定除了用于导频传输的,其余都可以用于数据传输,或者邻近导频的下一个频域起始位置对应的资源用于数据传输等)。
上述实施例中,仅以一个终端在传输导频的符号上仅被配置一个频域起始位置为例,一个终端也可以在传输导频的符号上被配置超过一个频域起始位置用于传输导频,此时按照梳状间隔以及每个频域起始位置来确定多个导频映射资源组,其目的是充分利用传输导频的符号上的空闲资源,提高终端的信道估计性能,此时,在每个导频映射资源组中独立进行映射,每个导频映射资源组中的导频序列可以使用不同的循环移位和/或正交序列独立产生,也可以仅根据一个导频映射资源组来产生,并复制在另一个导频映射资源组中传输,即不同导频映射资源组中传输相同的序列,当然,也可以将多个频域起始位置所确定的导频映射资源作为一个集合,终端针对该资源大小产生一个导频序列;例如实现方式3中,终端A可以被配置使用第一频域起始位置以及第二频域起始位置传输导频,此时可能需要扩展UL grant中的第一指示域,支持指示多个频域起始位置,则在第一频域起始位置上传输的导频序列由于需要与终端B进行MU-MIMO传输,因此需独立于在第二频域起始位置上传输的导频序列,即终端A可以产生1个长度为12的导频序列,复制为两份,分别在两个频域起始位置上传输,也可以终端独立产生两个长度为12的导频序列,分别在两个频域起始位置上传输,如图5-9所示,当然也不排除,终端可以直接产生一个长度为24的导频序列,按照频域高低顺序映射到两个频域资源起始位置所组成的频域资源集合中。
上述实施例中,仅以一个时隙包含7个符号的结构为例,且仅以导频在第四个符号传输为例,导频在其他符号位置传输,例如导频在第一个符号传输,后续多个PUSCH在第一个符号上复用传输导频,如图6所示,或者导频在多个符号传输,其方法都与上述实施例类似,其他时隙结构或者PUSCH传输长度(时域所占用的符号数)的传输方法也与上述实施例类似,都包含在本发明中,不再赘述。
上述实施例中,仅以梳状间隔或梳个数为2为例,对于其他梳状间隔或梳个数的数值,例如如图7所示,其实现方法与上述实施例类似,都包含在本发明中,只不过可能需要的第一指示域和或第二指示域的比特数会发生变化,例如可以指示多余一个空闲的频域起始 位置给是用CP-OFDM的终端用于传输数据,不再赘述。
基于相同的技术构思,本发明实施例还提供一种终端,如图8所示,包括:
确定单元801,用于确定导频的频域起始位置,所述终端为使用CP-OFDM进行上行传输的终端;
导频映射单元802,用于根据梳状间隔及确定的频域起始位置,在传输导频的符号上映射导频;
发送单元803,用于将映射在符号上的导频发送至基站。
可选地,所述确定单元801,具体用于:
根据与所述基站的预先约定,确定导频的频域起始位置;或者
根据所述基站下发的配置信令,确定导频的频域起始位置。
可选地,所述频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为所述梳状间隔,N为正整数。
可选地,所述传输导频的符号为根据所述终端与所述基站预先约定的一个或多个符号;或者
所述传输导频的符号为所述终端根据所述基站下发的配置信令确定的一个或多个符号。
可选地,所述确定单元801,还用于根据下列方法得到在传输导频的符号上映射的所述导频:
确定导频序列的循环移位值和/或正交序列;
根据所述循环移位值和/或正交序列,生成所述导频。
可选地,所述确定单元801,具体用于:根据与所述基站的预先约定,确定所述循环移位值和/或正交序列;或者
所述终端根据所述基站下发的配置信令,确定所述循环移位值和/或正交序列。
可选地,所述频域起始位置为多个;所述导频映射单元802,具体用于:根据每个频域起始位置及所述梳状间隔,在传输导频的符号上分别映射多个导频序列。
可选地,所述终端还包括数据映射单元804,用于:
确定在所述传输导频的符号上不进行任何数据传输;或者
确定所述传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在所述传输导频的符号上映射数据。
可选地,所述数据映射单元804,具体用于:根据与所述基站的预先约定,确定所述用于传输数据的频域起始位置;或者
根据所述基站下发的配置信令,确定所述用于传输数据的频域起始位置。
可选地,所述梳状间隔为所述终端与所述基站预先约定;或者
所述梳状间隔为所述终端根据所述基站下发的配置信令得到。
基于相同的技术构思,本发明实施例还提供一种基站,如图9所示,包括:
确定单元901,用于确定终端的导频的频域起始位置,所述终端为使用CP-OFDM进行上行传输的终端;
导频获取单元902,用于根据梳状间隔及确定的频域起始位置,在所述终端传输导频的符号上获取所述终端的导频。
可选地,所述导频的频域起始位置为所述基站与所述终端预先约定;或者
所述导频的频域起始位置为所述基站预先确定并通过配置信令下发至所述终端。
可选地,所述频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为所述梳状间隔,N为正整数。
可选地,所述传输导频的符号为所述基站与所述终端预先约定的一个或多个符号;或者所述传输导频的符号为所述基站确定,并通过配置信令通知所述终端的一个或多个符号。
可选地,所述确定单元901,还用于根据下列方法得到在传输导频的符号上映射的所述导频:确定导频序列的循环移位值和/或正交序列;根据所述循环移位值和/或正交序列,获取所述导频。
可选地,所述循环移位值和/或正交序列为所述基站与所述终端预先约定;或者
所述循环移位值和/或正交序列为所述基站确定,并通过配置信令通知所述终端。
可选地,所述频域起始位置为多个;所述导频获取单元902,具体用于:根据每个频域起始位置及所述梳状间隔,在所述传输导频的符号上分别获取多个导频序列。
可选地,所述基站还包括数据获取单元903,用于:
确定在所述传输导频的符号上不进行任何数据传输;或者
确定所述传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在所述传输导频的符号上获取数据。
可选地,所述用于传输数据的频域起始位置为所述终端与所述基站预先约定;或者
所述用于传输数据的频域起始位置为所述基站确定,并通过配置信令下发至所述终端。
可选地,所述梳状间隔为所述基站与所述终端预先约定;或者
所述梳状间隔为所述基站确定,并通过配置信令下发至所述终端。
基于相同的技术构思,本发明实施例还提供一种基站,如图10所示,包括:
确定单元1001,用于确定多个终端中的每个终端的导频的频域起始位置,所述多个终端中的至少一个终端为使用CP-OFDM进行上行传输的终端,所述多个终端中的至少一个终端为使用DFT-S-OFDM进行上行传输的终端,所述多个终端的上行传输资源在频域上存 在重叠;
导频获取单元1002,用于根据梳状间隔及确定的每个频域起始位置,在每个终端传输导频的符号上获取每个终端的导频。
可选地,所述每个终端导频的频域起始位置为所述基站与每个终端预先约定;或者
所述导频的频域起始位置为所述基站预先确定并通过配置信令下发至每个终端。
可选地,所述每个终端的频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为所述梳状间隔,N为正整数。
可选地,所述传输导频的符号为所述基站与每个终端预先约定的一个或多个符号;或者
所述传输导频的符号为所述基站确定,并通过配置信令通知每个终端的一个或多个符号。
可选地,所述确定单元1001,还用于根据下列方法得到在每个终端传输导频的符号上映射的所述导频:
确定每个终端的导频序列的循环移位值和/或正交序列;
根据每个终端的循环移位值和/或正交序列,获取每个终端的导频。
可选地,所述每个终端的循环移位值和/或正交序列为所述基站与每个终端预先约定;或者
所述每个终端的循环移位值和/或正交序列为所述基站确定,并通过配置信令通知每个终端。
可选地,所述频域起始位置为多个;所述导频获取单元1002,具体用于:针对任一终端,根据所述终端的每个频域起始位置及所述梳状间隔,在所述传输导频的符号上分别获取所述终端的多个导频序列。
可选地,所述基站还包括数据获取单元1003,用于:
针对任一终端,确定在所述终端的传输导频的符号上不进行任何数据传输;或者,确定所述终端的传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在所述终端的传输导频的符号上获取数据。
可选地,所述用于传输数据的频域起始位置为所述终端与所述基站预先约定;或者所述用于传输数据的频域起始位置为所述基站确定,并通过配置信令下发至所述终端。
可选地,所述梳状间隔为所述基站每个终端预先约定;或者所述梳状间隔为所述基站确定,并通过配置信令下发至每个终端。
参见图11,本申请实施例提供的另一种终端,包括:
存储器620,用于存储程序指令;
处理器600,用于读取存储器620中的程序,执行下列过程:
确定导频的频域起始位置,所述终端为使用循环前缀正交频分复用CP-OFDM进行上行传输的终端;
根据梳状间隔及确定的频域起始位置,在传输导频的符号上映射导频;
将映射在符号上的导频,通过收发机610发送至基站。
收发机610,用于在处理器600的控制下接收和发送数据。
另外,处理器600,还具有调用所述存储器620中存储的程序指令,按照获得的程序执行本申请实施例提供的任一所述的上行传输方法的功能,类似上述实施例中的相应内容,在此不再赘述。
其中,在图11中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器600代表的一个或多个处理器和存储器620代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机610可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备,用户接口630还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器600负责管理总线架构和通常的处理,存储器620可以存储处理器600在执行操作时所使用的数据。
可选的,处理器600可以是CPU(中央处埋器)、ASIC(Application Specific Integrated Circuit,专用集成电路)、FPGA(Field-Programmable Gate Array,现场可编程门阵列)或CPLD(Complex Programmable Logic Device,复杂可编程逻辑器件)。
参见图12,本申请实施例提供的另一种基站,包括:
存储器520,用于存储程序指令;
处理器500,用于调用所述存储器520中存储的程序指令,按照获得的程序执行:
确定终端的导频的频域起始位置,所述终端为使用CP-OFDM进行上行传输的终端;
根据梳状间隔及确定的频域起始位置,在所述终端传输导频的符号上,通过收发机510获取所述终端的导频。
收发机510,用于在处理器500的控制下接收和发送数据。
另外,处理器500,还具有调用所述存储器520中存储的程序指令,按照获得的程序执行本申请实施例提供的任一所述的上行传输方法的功能,类似上述实施例中的相应内容,在此不再赘述。
其中,在图12中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器500代表的一个或多个处理器和存储器520代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都 是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机510可以是多个元件,即包括发送机和收发机,提供用于在传输介质上与各种其他装置通信的单元。处理器500负责管理总线架构和通常的处理,存储器520可以存储处理器500在执行操作时所使用的数据。
处理器500可以是中央处埋器(CPU)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device,CPLD)。
参见图13,本申请实施例提供的另一种基站,包括:
存储器505,用于存储程序指令;
处理器504,用于调用所述存储器中存储的程序指令,按照获得的程序执行:
确定多个终端中的每个终端的导频的频域起始位置,所述多个终端中的至少一个终端为使用CP-OFDM进行上行传输的终端,所述多个终端中的至少一个终端为使用基于傅里叶扩展的正交频分复用DFT-S-OFDM进行上行传输的终端,所述多个终端的上行传输资源在频域上存在重叠;
根据梳状间隔及确定的每个频域起始位置,在每个终端传输导频的符号上,通过收发机501获取每个终端的导频。
收发机501,用于在处理器504的控制下接收和发送数据。
另外,处理器504,还具有调用所述存储器505中存储的程序指令,按照获得的程序执行本申请实施例提供的任一所述的上行传输方法的功能,类似上述实施例中的相应内容,在此不再赘述。
在图13中,总线架构(用总线506来代表),总线506可以包括任意数量的互联的总线和桥,总线506将包括由处理器504代表的一个或多个处理器和存储器505代表的存储器的各种电路链接在一起。总线500还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口503在总线506和收发机501之间提供接口。收发机501可以是一个元件,也可以是多个元件,比如多个接收器和发送器,提供用于在传输介质上与各种其他装置通信的单元。经处理器504处理的数据通过天线502在无线介质上进行传输,进一步,天线502还接收数据并将数据传送给处理器504。
处理器504负责管理总线506和通常的处理,还可以提供各种功能,包括定时,外围接口,电压调节、电源管理以及其他控制功能。而存储器505可以被用于存储处理器504在执行操作时所使用的数据。
可选的,处理器504可以是CPU(中央处埋器)、ASIC(Application Specific Integrated Circuit,专用集成电路)、FPGA(Field-Programmable Gate Array,现场可编程门阵列)或 CPLD(Complex Programmable Logic Device,复杂可编程逻辑器件)。
本领域内的技术人员应明白,本发明的实施例可提供为方法、系统、或计算机程序产品。因此,本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例作出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然,本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实施例的精神和范围。这样,倘若本发明实施例的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。

Claims (64)

  1. 一种上行传输方法,其特征在于,包括:
    终端确定导频的频域起始位置,所述终端为使用循环前缀正交频分复用CP-OFDM进行上行传输的终端;
    所述终端根据梳状间隔及确定的频域起始位置,在传输导频的符号上映射导频;
    所述终端将映射在符号上的导频发送至基站。
  2. 根据权利要求1所述的方法,其特征在于,所述终端确定导频的频域起始位置,包括:
    所述终端根据与所述基站的预先约定,确定导频的频域起始位置;或者
    所述终端根据所述基站下发的配置信令,确定导频的频域起始位置。
  3. 根据权利要求1所述的方法,其特征在于,所述频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为所述梳状间隔,N为正整数。
  4. 根据权利要求1所述的方法,其特征在于,所述传输导频的符号为根据所述终端与所述基站预先约定的一个或多个符号;或者
    所述传输导频的符号为所述终端根据所述基站下发的配置信令确定的一个或多个符号。
  5. 根据权利要求1至4任一所述的方法,其特征在于,所述终端根据下列方法得到在传输导频的符号上映射的所述导频:
    所述终端确定导频序列的循环移位值和/或正交序列;
    所述终端根据所述循环移位值和/或正交序列,生成所述导频。
  6. 根据权利要求5所述的方法,其特征在于,所述终端确定导频序列的循环移位值和/或正交序列,包括:
    所述终端根据与所述基站的预先约定,确定所述循环移位值和/或正交序列;或者
    所述终端根据所述基站下发的配置信令,确定所述循环移位值和/或正交序列。
  7. 根据权利要求1所述的方法,其特征在于,所述频域起始位置为多个;所述终端根据梳状间隔及确定的频域起始位置,在传输导频的符号上映射导频,包括:
    所述终端根据每个频域起始位置及所述梳状间隔,在传输导频的符号上分别映射多个导频序列。
  8. 根据权利要求1所述的方法,其特征在于,所述方法还包括:
    所述终端确定在所述传输导频的符号上不进行任何数据传输;或者
    所述终端确定所述传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在所述传输导频的符号上映射数据。
  9. 根据权利要求8所述的方法,其特征在于,所述终端确定所述传输导频的符号上用于传输数据的频域起始位置,包括:
    所述终端根据与所述基站的预先约定,确定所述用于传输数据的频域起始位置;或者
    所述终端根据所述基站下发的配置信令,确定所述用于传输数据的频域起始位置。
  10. 根据权利要求1至4任一所述的方法,其特征在于,所述梳状间隔为所述终端与所述基站预先约定;或者
    所述梳状间隔为所述终端根据所述基站下发的配置信令得到。
  11. 一种上行传输方法,其特征在于,包括:
    基站确定终端的导频的频域起始位置,所述终端为使用CP-OFDM进行上行传输的终端;
    所述基站根据梳状间隔及确定的频域起始位置,在所述终端传输导频的符号上获取所述终端的导频。
  12. 根据权利要求11所述的方法,其特征在于,所述导频的频域起始位置为所述基站与所述终端预先约定;或者
    所述导频的频域起始位置为所述基站预先确定并通过配置信令下发至所述终端。
  13. 根据权利要求11所述的方法,其特征在于,所述频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为所述梳状间隔,N为正整数。
  14. 根据权利要求11所述的方法,其特征在于,所述传输导频的符号为所述基站与所述终端预先约定的一个或多个符号;或者
    所述传输导频的符号为所述基站确定,并通过配置信令通知所述终端的一个或多个符号。
  15. 根据权利要求11至14任一所述的方法,其特征在于,所述基站根据下列方法得到在传输导频的符号上映射的所述导频:
    所述基站确定导频序列的循环移位值和/或正交序列;
    所述基站根据所述循环移位值和/或正交序列,获取所述导频。
  16. 根据权利要求15所述的方法,其特征在于,所述循环移位值和/或正交序列为所述基站与所述终端预先约定;或者
    所述循环移位值和/或正交序列为所述基站确定,并通过配置信令通知所述终端。
  17. 根据权利要求11所述的方法,其特征在于,所述频域起始位置为多个;所述基站根据梳状间隔及确定的频域起始位置,在所述终端传输导频的符号上获取所述终端的导频,包括:
    所述基站根据每个频域起始位置及所述梳状间隔,在所述传输导频的符号上分别获取多个导频序列。
  18. 根据权利要求11所述的方法,其特征在于,所述方法还包括:
    所述基站确定在所述传输导频的符号上不进行任何数据传输;或者
    所述基站确定所述传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在所述传输导频的符号上获取数据。
  19. 根据权利要求18所述的方法,其特征在于,所述用于传输数据的频域起始位置为所述终端与所述基站预先约定;或者
    所述用于传输数据的频域起始位置为所述基站确定,并通过配置信令下发至所述终端。
  20. 根据权利要求11至14任一所述的方法,其特征在于,所述梳状间隔为所述基站与所述终端预先约定;或者
    所述梳状间隔为所述基站确定,并通过配置信令下发至所述终端。
  21. 一种上行传输方法,其特征在于,包括:
    基站确定多个终端中的每个终端的导频的频域起始位置,所述多个终端中的至少一个终端为使用CP-OFDM进行上行传输的终端,所述多个终端中的至少一个终端为使用基于傅里叶扩展的正交频分复用DFT-S-OFDM进行上行传输的终端,所述多个终端的上行传输资源在频域上存在重叠;
    所述基站根据梳状间隔及确定的每个频域起始位置,在每个终端传输导频的符号上获取每个终端的导频。
  22. 根据权利要求21所述的方法,其特征在于,所述每个终端导频的频域起始位置为所述基站与每个终端预先约定;或者
    所述导频的频域起始位置为所述基站预先确定并通过配置信令下发至每个终端。
  23. 根据权利要求21所述的方法,其特征在于,所述每个终端的频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为所述梳状间隔,N为正整数。
  24. 根据权利要求21所述的方法,其特征在于,所述传输导频的符号为所述基站与每个终端预先约定的一个或多个符号;或者
    所述传输导频的符号为所述基站确定,并通过配置信令通知每个终端的一个或多个符号。
  25. 根据权利要求21至24任一所述的方法,其特征在于,所述基站根据下列方法得到在传输导频的符号上映射的所述导频:
    所述基站确定每个终端的导频序列的循环移位值和/或正交序列;
    所述基站根据每个终端的循环移位值和/或正交序列,获取每个终端的导频。
  26. 根据权利要求25所述的方法,其特征在于,所述每个终端的循环移位值和/或正交序列为所述基站与每个终端预先约定;或者
    所述每个终端的循环移位值和/或正交序列为所述基站确定,并通过配置信令通知每个终端。
  27. 根据权利要求21所述的方法,其特征在于,所述频域起始位置为多个;所述基站根据梳状间隔及确定的每个终端的频域起始位置,在每个终端传输导频的符号上获取每个终端的导频,包括:
    针对任一终端,所述基站根据所述终端的每个频域起始位置及所述梳状间隔,在所述传输导频的符号上分别获取所述终端的多个导频序列。
  28. 根据权利要求21所述的方法,其特征在于,所述方法还包括:
    针对任一终端,所述基站确定在所述终端的传输导频的符号上不进行任何数据传输;或者,所述基站确定所述终端的传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在所述终端的传输导频的符号上获取数据。
  29. 根据权利要求28所述的方法,其特征在于,所述用于传输数据的频域起始位置为所述终端与所述基站预先约定;或者
    所述用于传输数据的频域起始位置为所述基站确定,并通过配置信令下发至所述终端。
  30. 根据权利要求21至24任一所述的方法,其特征在于,所述梳状间隔为所述基站每个终端预先约定;或者
    所述梳状间隔为所述基站确定,并通过配置信令下发至每个终端。
  31. 一种终端,其特征在于,包括:
    确定单元,用于确定导频的频域起始位置,所述终端为使用CP-OFDM进行上行传输的终端;
    导频映射单元,用于根据梳状间隔及确定的频域起始位置,在传输导频的符号上映射导频;
    发送单元,用于将映射在符号上的导频发送至基站。
  32. 根据权利要求31所述的终端,其特征在于,所述确定单元,具体用于:
    根据与所述基站的预先约定,确定导频的频域起始位置;或者
    根据所述基站下发的配置信令,确定导频的频域起始位置。
  33. 根据权利要求31所述的终端,其特征在于,所述频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为所述梳状间隔,N为正整数。
  34. 根据权利要求31所述的终端,其特征在于,所述传输导频的符号为根据所述终端与所述基站预先约定的一个或多个符号;或者
    所述传输导频的符号为所述终端根据所述基站下发的配置信令确定的一个或多个符 号。
  35. 根据权利要求31至34任一所述的终端,其特征在于,所述确定单元,还用于根据下列方法得到在传输导频的符号上映射的所述导频:
    确定导频序列的循环移位值和/或正交序列;
    根据所述循环移位值和/或正交序列,生成所述导频。
  36. 根据权利要求35所述的终端,其特征在于,所述确定单元,具体用于:根据与所述基站的预先约定,确定所述循环移位值和/或正交序列;或者
    所述终端根据所述基站下发的配置信令,确定所述循环移位值和/或正交序列。
  37. 根据权利要求31所述的终端,其特征在于,所述频域起始位置为多个;所述导频映射单元,具体用于:根据每个频域起始位置及所述梳状间隔,在传输导频的符号上分别映射多个导频序列。
  38. 根据权利要求31所述的终端,其特征在于,所述终端还包括数据映射单元,用于:
    确定在所述传输导频的符号上不进行任何数据传输;或者
    确定所述传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在所述传输导频的符号上映射数据。
  39. 根据权利要求38所述的终端,其特征在于,所述数据映射单元,具体用于:根据与所述基站的预先约定,确定所述用于传输数据的频域起始位置;或者
    根据所述基站下发的配置信令,确定所述用于传输数据的频域起始位置。
  40. 根据权利要求31至34任一所述的终端,其特征在于,所述梳状间隔为所述终端与所述基站预先约定;或者
    所述梳状间隔为所述终端根据所述基站下发的配置信令得到。
  41. 一种基站,其特征在于,包括:
    确定单元,用于确定终端的导频的频域起始位置,所述终端为使用CP-OFDM进行上行传输的终端;
    导频获取单元,用于根据梳状间隔及确定的频域起始位置,在所述终端传输导频的符号上获取所述终端的导频。
  42. 根据权利要求41所述的基站,其特征在于,所述导频的频域起始位置为所述基站与所述终端预先约定;或者
    所述导频的频域起始位置为所述基站预先确定并通过配置信令下发至所述终端。
  43. 根据权利要求41所述的基站,其特征在于,所述频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为所述梳状间隔,N为正整数。
  44. 根据权利要求41所述的基站,其特征在于,所述传输导频的符号为所述基站与 所述终端预先约定的一个或多个符号;或者
    所述传输导频的符号为所述基站确定,并通过配置信令通知所述终端的一个或多个符号。
  45. 根据权利要求41至44任一所述的基站,其特征在于,所述确定单元,还用于根据下列方法得到在传输导频的符号上映射的所述导频:
    确定导频序列的循环移位值和/或正交序列;
    根据所述循环移位值和/或正交序列,获取所述导频。
  46. 根据权利要求45所述的基站,其特征在于,所述循环移位值和/或正交序列为所述基站与所述终端预先约定;或者
    所述循环移位值和/或正交序列为所述基站确定,并通过配置信令通知所述终端。
  47. 根据权利要求41所述的基站,其特征在于,所述频域起始位置为多个;所述导频获取单元,具体用于:根据每个频域起始位置及所述梳状间隔,在所述传输导频的符号上分别获取多个导频序列。
  48. 根据权利要求41所述的基站,其特征在于,所述基站还包括数据获取单元,用于:
    确定在所述传输导频的符号上不进行任何数据传输;或者
    确定所述传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在所述传输导频的符号上获取数据。
  49. 根据权利要求48所述的基站,其特征在于,所述用于传输数据的频域起始位置为所述终端与所述基站预先约定;或者
    所述用于传输数据的频域起始位置为所述基站确定,并通过配置信令下发至所述终端。
  50. 根据权利要求41至44任一所述的基站,其特征在于,所述梳状间隔为所述基站与所述终端预先约定;或者
    所述梳状间隔为所述基站确定,并通过配置信令下发至所述终端。
  51. 一种基站,其特征在于,包括:
    确定单元,用于确定多个终端中的每个终端的导频的频域起始位置,所述多个终端中的至少一个终端为使用CP-OFDM进行上行传输的终端,所述多个终端中的至少一个终端为使用基于傅里叶扩展的正交频分复用DFT-S-OFDM进行上行传输的终端,所述多个终端的上行传输资源在频域上存在重叠;
    导频获取单元,用于根据梳状间隔及确定的每个频域起始位置,在每个终端传输导频的符号上获取每个终端的导频。
  52. 根据权利要求51所述的基站,其特征在于,所述每个终端导频的频域起始位置 为所述基站与每个终端预先约定;或者
    所述导频的频域起始位置为所述基站预先确定并通过配置信令下发至每个终端。
  53. 根据权利要求51所述的基站,其特征在于,所述每个终端的频域起始位置的候选值为K,K∈[0,N-1],K为整数,且N为所述梳状间隔,N为正整数。
  54. 根据权利要求51所述的基站,其特征在于,所述传输导频的符号为所述基站与每个终端预先约定的一个或多个符号;或者
    所述传输导频的符号为所述基站确定,并通过配置信令通知每个终端的一个或多个符号。
  55. 根据权利要求51至54任一所述的基站,其特征在于,所述确定单元,还用于根据下列方法得到在每个终端传输导频的符号上映射的所述导频:
    确定每个终端的导频序列的循环移位值和/或正交序列;
    根据每个终端的循环移位值和/或正交序列,获取每个终端的导频。
  56. 根据权利要求55所述的基站,其特征在于,所述每个终端的循环移位值和/或正交序列为所述基站与每个终端预先约定;或者
    所述每个终端的循环移位值和/或正交序列为所述基站确定,并通过配置信令通知每个终端。
  57. 根据权利要求51所述的基站,其特征在于,所述频域起始位置为多个;所述导频获取单元,具体用于:针对任一终端,根据所述终端的每个频域起始位置及所述梳状间隔,在所述传输导频的符号上分别获取所述终端的多个导频序列。
  58. 根据权利要求51所述的基站,其特征在于,所述基站还包括数据获取单元,用于:
    针对任一终端,确定在所述终端的传输导频的符号上不进行任何数据传输;或者,确定所述终端的传输导频的符号上用于传输数据的频域起始位置,并根据确定的用于传输数据的频域起始位置及所述梳状间隔,在所述终端的传输导频的符号上获取数据。
  59. 根据权利要求58所述的基站,其特征在于,所述用于传输数据的频域起始位置为所述终端与所述基站预先约定;或者
    所述用于传输数据的频域起始位置为所述基站确定,并通过配置信令下发至所述终端。
  60. 根据权利要求51至54任一所述的基站,其特征在于,所述梳状间隔为所述基站每个终端预先约定;或者
    所述梳状间隔为所述基站确定,并通过配置信令下发至每个终端。
  61. 一种终端,其特征在于,包括:
    存储器,用于存储程序指令;
    处理器,用于调用所述存储器中存储的程序指令,按照获得的程序执行:
    确定导频的频域起始位置,所述终端为使用循环前缀正交频分复用CP-OFDM进行上行传输的终端;
    根据梳状间隔及确定的频域起始位置,在传输导频的符号上映射导频;
    将映射在符号上的导频发送至基站。
  62. 一种基站,其特征在于,包括:
    存储器,用于存储程序指令;
    处理器,用于调用所述存储器中存储的程序指令,按照获得的程序执行:
    确定终端的导频的频域起始位置,所述终端为使用CP-OFDM进行上行传输的终端;
    根据梳状间隔及确定的频域起始位置,在所述终端传输导频的符号上获取所述终端的导频。
  63. 一种基站,其特征在于,包括:
    存储器,用于存储程序指令;
    处理器,用于调用所述存储器中存储的程序指令,按照获得的程序执行:
    确定多个终端中的每个终端的导频的频域起始位置,所述多个终端中的至少一个终端为使用CP-OFDM进行上行传输的终端,所述多个终端中的至少一个终端为使用基于傅里叶扩展的正交频分复用DFT-S-OFDM进行上行传输的终端,所述多个终端的上行传输资源在频域上存在重叠;
    根据梳状间隔及确定的每个频域起始位置,在每个终端传输导频的符号上获取每个终端的导频。
  64. 一种计算机存储介质,其特征在于,所述计算机存储介质存储有计算机可执行指令,所述计算机可执行指令用于使所述计算机执行权利要求1至30任一项所述的方法。
PCT/CN2018/075135 2017-01-06 2018-02-02 一种上行传输方法、终端及基站 WO2018127213A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/476,545 US11356220B2 (en) 2017-01-06 2018-02-02 Uplink transmission method, terminal, and base station

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710011427.5A CN108282312B (zh) 2017-01-06 2017-01-06 一种上行传输方法、终端及基站
CN201710011427.5 2017-01-06

Publications (1)

Publication Number Publication Date
WO2018127213A1 true WO2018127213A1 (zh) 2018-07-12

Family

ID=62789067

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/075135 WO2018127213A1 (zh) 2017-01-06 2018-02-02 一种上行传输方法、终端及基站

Country Status (3)

Country Link
US (1) US11356220B2 (zh)
CN (1) CN108282312B (zh)
WO (1) WO2018127213A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11664947B2 (en) * 2017-06-26 2023-05-30 Qualcomm Incorporated Techniques for orthogonal demodulation reference signals
CN110474736B (zh) * 2018-05-11 2021-07-16 华为技术有限公司 通信方法和通信装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101394263A (zh) * 2008-10-29 2009-03-25 中兴通讯股份有限公司 上行信道测量参考信号及其带宽范围频域位置的映射方法
CN101989970A (zh) * 2009-08-07 2011-03-23 中国移动通信集团公司 一种解调导频信号的发送方法和设备
US20130176883A1 (en) * 2010-09-05 2013-07-11 Lg Electronics Inc. Method and Device for Deciding Location of Terminal in a Wireless Communication System
CN104301275A (zh) * 2014-09-05 2015-01-21 江苏中兴微通信息科技有限公司 基于导频间隔优化的导频位置确定方法及收发装置

Family Cites Families (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7248559B2 (en) * 2001-10-17 2007-07-24 Nortel Networks Limited Scattered pilot pattern and channel estimation method for MIMO-OFDM systems
US7436757B1 (en) * 2002-06-21 2008-10-14 Nortel Networks Limited Scattered pilot and filtering for channel estimation
KR100981552B1 (ko) * 2005-06-21 2010-09-10 삼성전자주식회사 주파수분할 다중접속 시스템에서 상향링크 파일롯의 송수신장치 및 방법
KR100913870B1 (ko) * 2006-11-17 2009-08-26 삼성전자주식회사 직교 주파수 분할 시스템에서의 채널 추정 방법 및 장치
CN101299871B (zh) * 2007-04-30 2012-07-25 电信科学技术研究院 发送上行探测导频的方法及系统、基站和终端
KR101445335B1 (ko) * 2007-05-28 2014-09-29 삼성전자주식회사 가변적인 데이터 송신율을 가지는 ofdm 심볼을송수신하는 ofdm 송신/수신 장치 및 그 방법
US7894331B2 (en) * 2007-09-05 2011-02-22 Newport Media, Inc. Adaptive time-domain interpolation for OFDM scattered pilot symbols
CN101409583B (zh) * 2007-10-11 2013-02-13 电信科学技术研究院 信号发送方法、信号发送装置
KR101466943B1 (ko) * 2008-04-04 2014-12-02 삼성전자주식회사 주파수 영역 등화를 위한 송신기 및 수신기
US8724717B2 (en) * 2008-04-10 2014-05-13 Mediatek Inc. Pilot pattern design for high-rank MIMO OFDMA systems
US8331506B2 (en) * 2010-03-12 2012-12-11 Telefonaktiebolaget L M Ericsson (Publ) Frequency-dependent IQ imbalance estimation
JP5991572B2 (ja) * 2011-02-28 2016-09-14 サン パテント トラスト 送信方法および送信装置
CN102685890B (zh) * 2011-03-08 2017-11-14 中兴通讯股份有限公司 一种导频的发送方法及系统
CN102739382A (zh) * 2011-03-25 2012-10-17 北京新岸线无线技术有限公司 无线通信系统中解调导频的调整方法及系统
US8625697B2 (en) * 2011-07-08 2014-01-07 I-Shou University OFDM beamformer, and a signal receiving system incorporating the same
US8897353B2 (en) * 2013-03-15 2014-11-25 Acorn Technologies, Inc. Block time domain channel estimation in OFDM system
WO2014180510A1 (en) * 2013-05-10 2014-11-13 Telefonaktiebolaget L M Ericsson (Publ) Channel estimation for a subset of resource elements of a resource block
WO2015037875A1 (en) * 2013-09-12 2015-03-19 Samsung Electronics Co., Ltd. Transmitter, receiver and controlling method thereof
US9621389B2 (en) * 2013-09-30 2017-04-11 Volvo Car Corporation Method to introduce complementing training symbols into a 802.11p OFDM frame in vehicular communications
WO2015054858A1 (zh) * 2013-10-17 2015-04-23 华为技术有限公司 一种信道估计方法、装置及系统
CN105637827B (zh) * 2014-03-25 2019-08-20 华为技术有限公司 导频序列的插入、提取方法和设备
US9219629B1 (en) * 2014-08-27 2015-12-22 Zenith Electronics L.L.C. Adaptive low complexity channel estimation for mobile OFDM systems
CN105743626B (zh) * 2014-12-30 2020-09-15 北京三星通信技术研究有限公司 一种下行信道和/或下行参考信号的接收方法和设备
US10320542B2 (en) * 2015-06-18 2019-06-11 Lg Electronics Inc. Method and device for transmitting control information to be used in terminal
US10911281B2 (en) * 2015-10-20 2021-02-02 Huawei Technologies Co., Ltd. System and method for pilot signal transmission
CN105656817B (zh) * 2016-03-03 2018-10-02 清华大学 信道估计方法及装置
CN107181580A (zh) 2016-03-11 2017-09-19 北京信威通信技术股份有限公司 扩展上行dmrs可支持的最大ue端口数量的方法
CN105898872B (zh) 2016-03-31 2021-01-22 电信科学技术研究院 一种上行传输方法及装置
CN109417527B (zh) 2016-07-08 2023-07-28 夏普株式会社 基站装置、终端装置、通信方法及集成电路
US11233613B2 (en) * 2016-09-12 2022-01-25 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Pilot signal transmission method and device
WO2019132980A1 (en) * 2017-12-29 2019-07-04 Intel IP Corporation Enhanced signal detection for wireless communications

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101394263A (zh) * 2008-10-29 2009-03-25 中兴通讯股份有限公司 上行信道测量参考信号及其带宽范围频域位置的映射方法
CN101989970A (zh) * 2009-08-07 2011-03-23 中国移动通信集团公司 一种解调导频信号的发送方法和设备
US20130176883A1 (en) * 2010-09-05 2013-07-11 Lg Electronics Inc. Method and Device for Deciding Location of Terminal in a Wireless Communication System
CN104301275A (zh) * 2014-09-05 2015-01-21 江苏中兴微通信息科技有限公司 基于导频间隔优化的导频位置确定方法及收发装置

Also Published As

Publication number Publication date
US11356220B2 (en) 2022-06-07
CN108282312A (zh) 2018-07-13
CN108282312B (zh) 2020-09-01
US20210160024A1 (en) 2021-05-27

Similar Documents

Publication Publication Date Title
WO2019196666A1 (zh) 一种定位参考信号传输方法及装置
RU2713430C1 (ru) Способ передачи пилот-сигнала, терминальное устройство и сетевое устройство
WO2017167146A1 (zh) 一种传输资源指示方法、基站、用户终端和系统
TWI772312B (zh) 基於無線網絡的通信方法、終端設備和網絡設備
TWI737756B (zh) 傳輸數據的方法及裝置
KR102647621B1 (ko) 서브프레임 배열을 위한 장치 및 방법
CN108667581B (zh) 传输dmrs的方法和装置
WO2018171752A1 (zh) 一种资源指示方法及网络设备、终端设备
KR20180131585A (ko) 전송 방법, 기기 및 시스템
WO2019047830A1 (zh) 一种发送、接收物理上行控制信道的方法及设备
EP2710844A1 (en) Method and apparatus for configuring sounding reference signal for segment carrier
CN111565458B (zh) 一种下行传输方法及其装置
US11165550B2 (en) Resource mapping method and communication device
CN115473617B (zh) 参考信号配置方法和装置
WO2018127213A1 (zh) 一种上行传输方法、终端及基站
CN109644195A (zh) 数据传输的方法、终端和网络设备
WO2018228496A1 (zh) 一种指示方法、处理方法及装置
US11362780B2 (en) DMRS sequence transmitting method, terminal device and network device
WO2018112933A1 (zh) 传输信息的方法、网络设备和终端设备
WO2017121208A1 (zh) 传输时间间隔tti的确定方法及装置
TWI670959B (zh) 一種上行傳輸方法、終端及基地台
WO2019010762A1 (zh) 一种数据传输方法及设备
CN114650599A (zh) 信息传输方法、装置、iab节点及网络设备
WO2018082365A1 (zh) 传输控制方法、装置及系统存储介质
CN114257484B (zh) 一种符号应用方法及通信装置

Legal Events

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

Ref document number: 18736012

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 04/10/2019)

122 Ep: pct application non-entry in european phase

Ref document number: 18736012

Country of ref document: EP

Kind code of ref document: A1