TW201937897A - Uplink transmission method, terminal and base station capable of sending arrangement command to determine a frequency domain start position of demodulation reference signal - Google Patents

Abstract

The present invention relates to the field of communication technologies, and more particularly to an uplink transmission method, a terminal, and a base station, for providing a demodulation reference signal transmitting scheme for a terminal supporting a CP-OFDM waveform, comprising: determining, by a terminal, a frequency domain start position of demodulation reference signal, the terminal being a device using CP-OFDM for uplink transmission; mapping the demodulation reference signal on the symbol for transmitting demodulation reference signals according to comb-type interval and determined frequency domain start position; and transmitting the demodulation reference signals mapped on the symbol to a base station. The embodiment of the present invention provides a scheme for a terminal that uses CP-OFDM for uplink transmission to map demodulation reference signals and use multiplexing demodulation reference signals on the same symbol in the uplink direction. Since the demodulation reference signal is mapped on the symbol by using the comb-type interval, multiple demodulation reference signal sequences of one terminal can be mapped on one symbol, or multiple demodulation reference signal sequences of different terminals can be mapped on one symbol to implement multiplexing demodulation reference signal for supporting multiple terminals, which can improve uplink resource utilization.

Description

Uplink transmission method, terminal and base station

The invention belongs to the field of communication technologies, and in particular relates to an uplink transmission method, a terminal and a base station.

As the demand for mobile communication services changes, organizations such as the ITU (International Telecommunication Union) and 3GPP have begun to research new wireless communication systems (such as 5G systems). The new wireless communication system can support DFT-S-OFDM (discrete Fourier transform spread Orthogonal Frequency Division Multiplexing) waveforms in uplink transmission, and can also support CP-OFDM (Cyclic prefix Orthogonal). Frequency Division Multiplexing, circulating frequency division multiplexed waveforms, and how different waveforms are multiplexed and transmitted.

In the LTE (Long Term Evolution) system, the upper behavior guarantees a single carrier characteristic, and a DFT-S-OFDM waveform is used. The pilot (DMRS (Demodulation Reference Signal)) and data are transmitted on different symbols in TDM (Time Division Multiplexing) mode, as shown in FIG. 1.

In the LTE system, the uplink transmission is in units of subframes, and the length of one subframe is 1 ms. The OFDM waveform is not used for the uplink, so the associated DMRS pattern is not defined. In the new wireless communication system: the length of the uplink transmission is not limited to 1 ms, and may be a transmission shorter than 1 ms. For example, the transmission of several symbol lengths; the transmission length may also change with the service requirements; the pilot transmission scheme of the LTE DFT-S-OFDM waveform has excessive pilot overhead when the number of transmitted symbols is reduced; in addition, the uplink can support The DFT-S-OFDM waveform can also support CP-OFDM waveforms. These two waveforms can work independently or together, for example, support terminals using different waveforms to perform MU-MIMO on the same frequency domain resources (Multi-User). Multiple-Input Multiple-Output, multi-user multiple-input multiple-out transmission, or support for terminals using different waveforms to work in adjacent short TTIs but multiplex transmission pilots on the same symbol, thereby improving uplink resource utilization.

At present, there is no relevant solution for how the terminal supporting the CP-OFDM waveform performs pilot transmission and how to support multiple different waveforms in the system to multiplex transmission on the same resource.

The present invention provides an uplink transmission method, a terminal, and a base station for providing a pilot transmission scheme for a terminal supporting a CP-OFDM waveform.

In a first aspect, an embodiment of the present invention provides an uplink transmission method, including: determining, by a terminal, a frequency domain start position of a pilot, where the terminal is a terminal that performs uplink transmission by using CP-OFDM; and the terminal is configured according to a comb interval and a determined frequency. The start position of the domain, the pilot is mapped on the symbol of the transmission pilot; the terminal transmits the pilot mapped on the symbol to the base station.

Optionally, 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 a pre-agreed with the base station; or the terminal determines a frequency domain start position of the pilot according to the configuration signaling sent by the base station.

Optionally, 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.

Optionally, 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 determined by the terminal according to configuration signaling sent by the base station. Or multiple symbols.

Optionally, the terminal obtains the pilot mapped on the symbol of the transmission pilot according to the following method: the terminal determines a loop shift value and/or an orthogonal sequence of the pilot sequence; the terminal shifts according to the loop The pilot is generated by a meta value and/or an orthogonal sequence.

Optionally, the terminal determines a loop shift value and/or an orthogonal sequence of the pilot sequence, including: determining, by the terminal, the loop shift value and/or the orthogonal sequence according to a pre-agreed with the base station; Or the terminal determines the loop shift value and/or the orthogonal sequence according to the configuration signaling sent by the base station.

Optionally, the frequency domain starting position is multiple; the terminal maps the pilot on the symbol of the transmission pilot according to the comb interval and the determined frequency domain starting position, including: the terminal starts from each frequency domain. The start position and the comb interval respectively map a plurality of pilot sequences on the symbols of the transmission pilots.

Optionally, the method further includes: determining, by the terminal, that no data transmission is performed on the symbol of the transmission pilot; or determining, by the terminal, a frequency domain starting position for transmitting the data on the symbol of the transmission pilot, and according to The determined frequency domain start position for transmitting data and the comb interval are mapped on the symbol of the transmission pilot.

Optionally, the terminal determines a frequency domain start position for transmitting the data on the symbol of the transmission pilot, including: determining, by the terminal, a frequency domain start position for transmitting data according to a pre-arrangement with the base station. Or the terminal determines the frequency domain starting position for transmitting the data according to the configuration signaling sent by the base station.

Optionally, the comb interval is pre-agreed by the terminal and the base station; or the comb interval is obtained by the terminal according to configuration signaling sent by the base station.

In a second aspect, an embodiment of the present invention provides an uplink transmission method, including: determining, by the base station, 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; and the base station is configured according to a comb The interval and the determined starting position of the frequency domain acquire the pilot of the terminal on the symbol of the pilot transmission pilot.

Optionally, the frequency domain starting position of the pilot is pre-arranged by the base station and the terminal; or the frequency domain starting position of the pilot is pre-determined by the base station and sent to the terminal by using configuration signaling.

Optionally, 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.

Optionally, the symbol of the transmission pilot is one or more symbols pre-arranged by the base station and the terminal; or the symbol of the transmission pilot is determined by the base station, and one or Multiple symbols.

Optionally, the base station obtains the pilot mapped on the symbol of the transmission pilot according to the following method: the base station determines a loop shift value and/or an orthogonal sequence of the pilot sequence; the base station according to the back The pilot is obtained by shifting the element value and/or the orthogonal sequence.

Optionally, the loop shift value and/or the orthogonal sequence is pre-agreed by the base station and the terminal; or the loop shift value and/or the orthogonal sequence is determined by the base station, and the signaling is configured. Notify the terminal.

Optionally, the frequency domain starting position is multiple; the base station acquires the pilot 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 The station acquires a plurality of pilot sequences on the symbol of the transmission pilot according to each frequency domain starting position and the comb interval.

Optionally, the method further comprises: the base station determining that no data transmission is performed on the symbol of the transmission pilot; or the base station determining a frequency domain starting position for transmitting the data on the symbol of the transmission pilot, and The data is acquired on the symbol of the transmission pilot according to the determined frequency domain start position for transmitting the data and the comb interval.

Optionally, the frequency domain starting location for transmitting data is pre-agreed by the terminal and the base station; or the frequency domain starting location for transmitting data is determined by the base station, and is sent by using configuration signaling. To the terminal.

Optionally, the comb interval is pre-arranged by the base station and the terminal; or the comb interval is determined by the base station, and is sent to the terminal by using configuration signaling.

In a third aspect, an embodiment of the present invention provides an uplink transmission method, including: determining, by a base station, a frequency domain start position of a pilot of each terminal of the multiple terminals, where at least one terminal of the multiple terminals uses a CP- a terminal for performing uplink transmission by OFDM, where at least one of the plurality of terminals is a terminal for uplink transmission using orthogonal frequency division multiplexing (DFT-S-OFDM) based on Fourier extension, and uplink transmission resources of the plurality of terminals are in a frequency domain There is an overlap on 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 starting position of each frequency domain.

Optionally, the frequency domain start position of each of the terminal pilots is pre-agreed by the base station and each terminal; or the frequency domain start position of the pilot is pre-determined by the base station and delivered by configuration signaling. To each terminal.

Optionally, the candidate value of the frequency domain starting 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.

Optionally, the symbol of the transmission pilot is pre-agreed by the base station and each terminal. One or more symbols of the transmission; 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.

Optionally, the base station obtains the pilot mapped on the symbol of the transmission pilot according to the following method: the base station determines a loop shift value and/or an orthogonal sequence of the pilot sequence of each terminal; the base The station acquires the pilot of each terminal according to the loop shift element value and/or the orthogonal sequence of each terminal.

Optionally, the loop shifting element value and/or the orthogonal sequence of each terminal is pre-agreed by the base station and each terminal; or the loop shifting element value and/or the orthogonal sequence of each terminal Determine for the base station and notify each terminal by configuration signaling.

Optionally, the starting position of the frequency domain is multiple; the base station acquires a guide of each terminal on a symbol of each terminal transmission pilot according to the comb interval and the determined frequency domain starting position of each terminal. The frequency includes: for any terminal, the base station acquires multiple pilot sequences of the terminal on the symbol of the transmission pilot according to each frequency domain starting position of the terminal and the comb interval.

Optionally, the method further includes: for any 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 the symbol of the transmission pilot of the terminal. And acquiring the data on the symbol of the transmission pilot of the terminal according to the determined starting position of the frequency domain for transmitting the data and the comb interval.

Optionally, the frequency domain starting location for transmitting data is pre-agreed by the terminal and the base station; or the frequency domain starting location for transmitting data is determined by the base station, and is sent by using configuration signaling. To the terminal.

Optionally, 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.

A fourth aspect of the present invention provides a terminal, including: a determining unit, configured to determine a frequency domain start position of a pilot, where the terminal is a terminal that performs uplink transmission by using CP-OFDM, and a pilot mapping unit, configured to a comb interval and a determined frequency domain start position, mapping a pilot on a symbol of a transmission pilot; and a transmitting unit, configured to send a pilot mapped on the symbol to the base station.

Optionally, the determining unit is specifically configured to: determine a frequency domain start position of the pilot according to a pre-agreed with the base station; or determine a frequency domain of the pilot according to configuration signaling sent by the base station Starting position.

Optionally, 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.

Optionally, 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 determined by the terminal according to configuration signaling sent by the base station. Or multiple symbols.

Optionally, the determining unit is further configured to obtain the pilot in the transmission according to the following method: The pilot mapped on the symbol: determining a loop shift value and/or an orthogonal sequence of the pilot sequence; generating the pilot according to the loop shift element value and/or the orthogonal sequence.

Optionally, the determining unit is specifically configured to: determine, according to a pre-arrangement with the base station, the loop shift value and/or the orthogonal sequence; or determine, according to the configuration signaling sent by the base station, the terminal The loop shift value and/or the orthogonal sequence.

Optionally, the frequency domain starting position is multiple, and the pilot mapping unit is configured to: respectively map multiple guides on the symbols of the transmission pilot according to each frequency domain starting position and the comb interval Frequency sequence.

Optionally, the terminal further includes a data mapping unit, configured to: determine that no data transmission is performed on the symbol of the transmission pilot; or determine a frequency domain start position of the transmission pilot symbol for transmitting data, And mapping the data on the symbol of the transmission pilot according to the determined frequency domain starting position for transmitting the data and the comb interval.

Optionally, 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 determine the usage according to the configuration signaling sent by the base station. The starting position of the frequency domain of the transmitted data.

Optionally, the comb interval is pre-agreed by the terminal and the base station; or the comb interval is obtained by the terminal according to configuration signaling sent by the base station.

In a fifth aspect, an embodiment of the present invention provides a base station, including: a determining unit, configured to determine a frequency domain starting position of the pilot of the terminal, where the terminal is a terminal that performs uplink transmission by using CP-OFDM, and a pilot acquiring unit, configured to determine, according to the comb interval and the determined frequency domain starting position, The pilot of the terminal is obtained on the symbol of the terminal transmitting the pilot.

Optionally, the frequency domain starting position of the pilot is pre-arranged by the base station and the terminal; or the frequency domain starting position of the pilot is pre-determined by the base station and sent to the terminal by using configuration signaling.

Optionally, 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.

Optionally, the symbol of the transmission pilot is one or more symbols pre-arranged by the base station and the terminal; or the symbol of the transmission pilot is determined by the base station, and one or Multiple symbols.

Optionally, the determining unit is further configured to obtain, according to the following method, the pilot that is mapped on the symbol of the transmission pilot: determining a loop shift value and/or an orthogonal sequence of the pilot sequence; and shifting according to the loop The pilot is obtained by a bit value and/or an orthogonal sequence.

Optionally, the loop shift value and/or the orthogonal sequence is pre-agreed by the base station and the terminal; or the loop shift value and/or the orthogonal sequence is determined by the base station, and the signaling is configured. Notify the terminal.

Optionally, the frequency domain starting position is multiple; the pilot acquiring unit is specifically configured to: acquire multiple multiples on the symbol of the transmission pilot according to each frequency domain starting position and the comb interval Pilot sequence.

Optionally, the base station further includes a data acquiring unit, configured to: determine that no data transmission is performed on the symbol of the transmission pilot; or determine a frequency domain starting position of the transmission pilot symbol for transmitting data. And acquiring data on the symbol of the transmission pilot according to the determined frequency domain starting position for transmitting data and the comb interval.

Optionally, the frequency domain starting location for transmitting data is pre-agreed by the terminal and the base station; or the frequency domain starting location for transmitting data is determined by the base station, and is sent by using configuration signaling. To the terminal.

Optionally, the comb interval is pre-arranged by the base station and the terminal; or the comb interval is determined by the base station, and is sent to the terminal by using configuration signaling.

According to a sixth aspect, 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 multiple terminals, where at least one of the multiple terminals is used a terminal for uplink transmission by CP-OFDM, at least one of the plurality of terminals is a terminal for uplink transmission using orthogonal frequency division multiplexing (DFT-S-OFDM) based on Fourier extension, and uplink transmission resources of the multiple terminals are There is overlap in the frequency domain; a pilot acquisition unit is configured to acquire 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.

Optionally, the frequency domain start position of each of the terminal pilots is pre-agreed by the base station and each terminal; or the frequency domain start position of the pilot is pre-determined by the base station and delivered by configuration signaling. To each terminal.

Optionally, the candidate value of the frequency domain starting 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.

Optionally, 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 each terminal is notified by configuration signaling. One or more symbols.

Optionally, the determining unit is further configured to obtain, according to the following method, the pilot mapped on a symbol of each terminal transmission pilot: determining a loop shift value of each pilot sequence of the terminal and/or orthogonal a sequence; acquiring a pilot for each terminal according to a loop shift element value and/or an orthogonal sequence of each terminal.

Optionally, the loop shifting element value and/or the orthogonal sequence of each terminal is pre-agreed by the base station and each terminal; or the loop shifting element value and/or the orthogonal sequence of each terminal Determine for the base station and notify each terminal by configuration signaling.

Optionally, the frequency domain starting position is multiple; the pilot acquiring unit is specifically configured to: for any terminal, according to the starting position of each frequency domain of the terminal and the comb interval, in the transmission guide A plurality of pilot sequences of the terminal are respectively obtained on the symbols of the frequency.

Optionally, the base station further includes a data acquisition unit, configured to: Determining, for any terminal, that no data transmission is performed on the symbol of the transmission pilot of the terminal; or determining a frequency domain starting position for transmitting the data on the symbol of the transmission pilot of the terminal, and determining according to the determination The data is acquired on the symbol of the transmission pilot of the terminal at the frequency domain start position of the transmission data and the comb interval.

Optionally, the frequency domain starting location for transmitting data is pre-agreed by the terminal and the base station; or the frequency domain starting location for transmitting data is determined by the base station, and is sent by using configuration signaling. To the terminal.

Optionally, 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.

In a seventh aspect, another terminal provided by the embodiment of the present application includes: a memory for storing a program instruction, and a processor, configured to invoke a program instruction stored in the memory, and execute according to the obtained program: determining a pilot. In the frequency domain start position, the terminal is a terminal for uplink transmission using a loop first code orthogonal frequency division multiplexing (CP-OFDM); and mapping on a symbol of a transmission pilot according to a comb interval and a determined frequency domain start position Pilot; transmits the pilot mapped on the symbol to the base station.

In an eighth aspect, another base station provided by the embodiment of the present application includes: a memory for storing a program instruction, and a processor, configured to invoke a program instruction stored in the memory, and execute according to the obtained program: determining a terminal The frequency domain start position of the pilot, the terminal is uplinked using CP-OFDM The terminal that is transmitted; according to the comb interval and the determined starting position of the frequency domain, the pilot of the terminal is obtained on the symbol of the pilot transmission of the terminal.

According to a ninth aspect, another base station provided by the embodiment of the present application includes: a memory for storing a program instruction, and a processor for calling a program instruction stored in the memory, and executing according to the obtained program: determining a plurality of a frequency domain start position of a pilot of each terminal in the terminal, at least one of the plurality of terminals being a terminal for uplink transmission using CP-OFDM, and at least one of the plurality of terminals is using a Fourier-based extension Orthogonal Frequency Division Multiplexing (OFDM) DFT-S-OFDM for uplink transmission, the uplink transmission resources of the multiple terminals overlap in the frequency domain; according to the comb interval and the determined starting position of each frequency domain, The pilots of each terminal are acquired on the symbols of the terminal transmission pilots.

In a tenth aspect, a computer storage medium provided by the embodiment of the present application stores a computer executable instruction, where the computer executable instruction is used to enable the computer to perform any of the methods provided in the embodiments of the present application.

In the embodiment of the present invention, the terminal determines a frequency domain start position of the pilot, where the terminal is a terminal that uses the CP-OFDM for uplink transmission, and maps the symbol of the transmission pilot according to the comb interval and the determined frequency domain start position. a 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. Implementing multiple pilot sequences for mapping one terminal on one symbol, or mapping multiple pilot sequences of different terminals on one symbol to support multi-terminal multiplexing The pilot is transmitted. When different terminals have different waveforms, different waveforms can be multiplexed and transmitted on the same resource, which can improve uplink resource utilization.

201~203, 301~302, 401~402‧‧‧ steps

801, 901, 1001‧‧‧determination unit

802‧‧‧pilot mapping unit

803‧‧‧Send unit

804‧‧‧data mapping unit

902, 1002‧‧ ‧ pilot acquisition unit

903, 1003‧‧‧ data acquisition unit

500, 504, 600‧‧ ‧ processors

501, 510, 610‧‧‧ transceivers

502‧‧‧Antenna

503‧‧‧ bus interface

505, 520, 620‧‧‧ memory

506‧‧‧ busbar

630‧‧‧User interface

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying progressive labor.

1 is a schematic diagram of a LTE PUSCH pilot structure in the prior art; FIG. 2 is a flowchart of an uplink transmission method according to an embodiment of the present invention; FIG. 3 is a flowchart of an uplink transmission method according to an embodiment of the present invention; Figure 5-1 is a schematic diagram of a first type of pilot mapping according to an embodiment of the present invention; Figure 5-2 is a schematic diagram of a second type of pilot mapping provided by an embodiment of the present invention; A schematic diagram of a third type of pilot mapping provided by the embodiment of the present invention; FIG. 5-4 is a schematic diagram of a fourth type of pilot mapping according to an embodiment of the present invention; FIG. 5 is a fifth pilot mapping provided by an embodiment of the present invention; FIG. 5 is a schematic diagram of a sixth pilot mapping according to an embodiment of the present invention; FIG. 5 is a schematic diagram of a seventh pilot mapping according to an embodiment of the present invention; FIG. The eighth pilot mapping diagram is shown in FIG. 5-9; FIG. 5-9 is a schematic diagram of a ninth pilot mapping provided by an embodiment of the present invention; FIG. 6 is a schematic diagram of a tenth pilot map according to an embodiment of the present invention; FIG. 7 is a schematic diagram of multiple frequency domain start 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 invention; 9 is a schematic diagram of a base station according to an embodiment of the present invention; FIG. 10 is a schematic diagram of another base station according to an embodiment of the present invention; FIG. 11 is a schematic diagram of another terminal according to an embodiment of the present invention; A schematic diagram of another base station provided by the embodiment; FIG. 13 is a schematic diagram of another base station according to an embodiment of the present invention.

The present invention will be further described in detail with reference to the accompanying drawings, in which FIG. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the scope of the present invention are within the scope of the present invention.

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

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. Access network of new radio access technology (New RAT); communication system such as CRAN (Cloud Radio Access Network). Hereinafter, some of the terms in the present application will be explained to be understood by those skilled in the art.

1) A terminal, also called a User Equipment (UE), is a device that provides voice and/or data connectivity to a user, for example, a palm-sized device with a wireless connection function, an in-vehicle device, and the like. Common terminals include, for example, mobile phones, tablets, notebook computers, palmtop computers, mobile internet devices (MIDs), wearable devices, such as smart watches, smart bracelets, pedometers, and the like.

2) A base station, also known as a radio access network (RAN) device, is a device that connects a terminal to a wireless network, including but not limited to: an evolved Node B (eNB). , radio network controller (RNC), Node B (Node B, NB), Base Station Controller (BSC), Base Transceiver Station (BTS), home base station (For example, Home evolved NodeB, or Home Node B, HNB), BaseBand Unit (BBU). In addition, a Wifi Access Point (AP) or the like may also be included.

3) "Multiple" means two or more. "and/or" describes 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.

4) In the embodiment of the present application, 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), based on Fourier Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-S-OFDM), Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM) and Pattern The method of determining the number of the multiple accesses (PDMA) is based on the actual situation and will not be described here.

As shown in FIG. 2, the uplink transmission method is provided by the embodiment of the present invention. The method is performed by the terminal, and the method includes: Step 201: The terminal determines a frequency domain start position of the pilot, where the terminal uses the CP-OFDM for uplink transmission. The terminal: Step 202: The terminal maps the pilot on the symbol of the transmission pilot according to the comb interval and the determined start position of the frequency domain; Step 203: The terminal sends the pilot mapped on the symbol to the base station.

In this embodiment, the terminal is a terminal that configures or stipulates uplink transmission using CP-OFDM.

In the foregoing step 201, 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 sends the frequency according to the base station. The configuration signaling determines the starting position of the frequency domain of the pilot.

Wherein, 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 a comb position or index.

In the foregoing 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, where the symbol of the transmission pilot is based on the terminal and the base. One or more symbols pre-agreed by the station, or one or more symbols determined by the terminal according to configuration signaling sent by the base station.

That is, 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 sent by the base station.

And, the pilot mapped on the symbol of the transmission pilot is obtained according to the following manner: the terminal determines a loop shift value and/or an orthogonal sequence of the pilot sequence, and then shifts the element value according to the loop and/or The orthogonal sequence generates a pilot.

The specific manner of determining the pilot sequence by the terminal is: the terminal determines the loop shift value and/or the orthogonal sequence according to the pre-arrangement with the base station; or the terminal determines the back according to the configuration signaling sent by the base station. Circle shift 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, in one The pilot block can transmit a plurality of pilots of different uplink transmissions by frequency division multiplexing.

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.

When the starting position of the frequency domain is multiple, the terminal respectively 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 starting positions. The pilot sequences may be generated independently (ie, may correspond to different loop shift values and/or orthogonal sequences), or be the same sequence.

And, 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 maps the data on the symbol of the transmission pilot according to the determined frequency domain start position for transmitting the data and the comb interval.

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 pre-agreed with the base station.

If it is determined that the symbol of the transmission pilot has a resource for transmitting data, the terminal further determines, according to a pre-arrangement with the base station, a frequency domain start position for transmitting the data; or the configuration signaling that the terminal sends according to the base station. Determine the starting position of the frequency domain for transmitting data.

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 independently configured for each resource block or each sub-band of the frequency domain resources scheduled by the terminal. Or an agreement.

The configuration signaling mentioned above may be an indication field in a high-level signaling or a downlink control channel that carries an uplink scheduling grant, that is, a downlink control channel that uses an uplink DCI (Downlink Control Information) format.

In the above step 203, the terminal transmits the pilot mapped on the symbol to the base station.

In the embodiment of the present invention, the terminal determines a frequency domain start position of the pilot, where the terminal is a terminal that uses the CP-OFDM for uplink transmission, and maps the symbol of the transmission pilot according to the comb interval and the determined frequency domain start position. a 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 in an uplink direction by using a CP-OFDM uplink transmission, and mapping a pilot on a symbol by using a comb interval, thereby realizing mapping on one symbol Multiple pilot sequences for a terminal, or a character Multiple pilot sequences of different terminals are mapped on the number to implement multi-terminal multiplexing transmission pilots, which can improve uplink resource utilization.

As shown in 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 the pilot of the terminal, where the terminal is a terminal that performs uplink transmission by using CP-OFDM.

Step 302: The base station acquires the pilot of the terminal on the symbol of the pilot transmission of the terminal according to the comb interval and the determined starting position of the frequency domain.

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 .

In the above step 301, 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.

Specifically, the frequency domain start position of the pilot is pre-agreed by the base station and the terminal; or 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 for 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.

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, in one The pilot block can transmit a plurality of pilots of different uplink transmissions by frequency division multiplexing.

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.

In the above step 302, the base station acquires the pilot of the terminal on the symbol of the pilot transmission of the terminal according to the comb interval and the determined starting position of the frequency domain.

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.

Specifically, the base station obtains the pilot mapped on the symbol of the transmission pilot according to the following method: the base station determines a loop shift value and/or an orthogonal sequence of the pilot sequence; and according to the loop shift element value and / or orthogonal sequence, get the pilot.

The loop shift value and/or the orthogonal sequence is pre-agreed by the base station and the terminal, or is determined by the base station and notified by the configuration signaling.

And, when the frequency domain start position is multiple; the base station acquires multiple pilot sequences on the symbol of the transmission pilot according to each frequency domain start position and the comb interval.

And the base station determines that no data transmission is performed on the symbol of the transmission pilot; or the base station determines the frequency domain start position for transmitting the data on the symbol of the transmission pilot, and according to the determined frequency for transmitting the data The start position of the domain and the comb interval acquire data on the symbol of the transmission pilot.

The frequency domain starting position for transmitting the data is pre-agreed by the terminal and the base station; or the frequency domain starting position for transmitting the data is determined by the base station and sent to the terminal by using configuration signaling.

In the embodiment of the present invention, the base station receives the pilot that is transmitted by the terminal and is mapped on the symbol of the transmission pilot, and the terminal is a terminal that performs uplink transmission by using CP-OFDM; The frequency domain starting position of the frequency; the base station acquires the pilot of the terminal according to the comb interval and the determined starting position of the frequency domain. 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. Implementing multiple pilot sequences for mapping one terminal on one symbol, or mapping multiple pilot sequences of different terminals on one symbol to implement multi-terminal multiplexing transmission pilots, when different terminals have different waveforms ( When the waveform is used, different waveforms can be multiplexed and transmitted on the same resource, which can improve the utilization of uplink resources.

As shown in FIG. 4, it is a schematic diagram of an uplink transmission method according to an embodiment of the present invention. The method is performed by a base station, and includes: Step 401: A base station determines a frequency domain start of a pilot of each terminal of the multiple terminals. Position, at least one of the plurality of terminals is a terminal that performs uplink transmission using CP-OFDM, and at least one of the plurality of terminals performs uplink using orthogonal frequency division multiplexing DFT-S-OFDM based on Fourier extension The transmitting terminal, the uplink transmission resources of the multiple terminals overlap in the frequency domain; in step 402, the base station acquires the pilot symbol on each terminal according to the comb interval and the determined starting position of each frequency domain. Pilot for each terminal.

The above 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. The method flow shown in FIG. 3 is a method flow for uplink transmission of a single terminal.

In the above step 401, the base station determines pilots of each of the plurality of terminals. The starting position of the frequency domain.

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.

Specifically, the frequency domain start position of the pilot is pre-agreed by the base station and each terminal; or 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 starting 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 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, in one The pilot block can transmit a plurality of pilots of different uplink transmissions by frequency division multiplexing.

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.

In the above step 402, 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.

Specifically, the base station obtains the pilot mapped on the symbol of the transmission pilot according to the following method: the base station determines a loop shift value and/or an orthogonal sequence of the pilot sequence of each terminal; according to the loop shift The bit value and/or the orthogonal sequence are used to obtain the pilot of each terminal.

The loop 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.

And, when the frequency domain start position is multiple; for any terminal, the base station separately acquires the terminal on the symbol of the transmission pilot according to each frequency domain start position of the terminal and the comb interval Multiple pilot sequences.

And, for any 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 the frequency domain starting position for transmitting the 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 the data and the comb interval.

The frequency domain starting position for transmitting the data is pre-agreed by the terminal and the base station; or the frequency domain starting position for transmitting the data is determined by the base station and sent to the terminal by using configuration signaling.

In the embodiment of the present invention, 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 a frequency domain of pilots of each terminal a starting position; the base station acquires pilots of each terminal according to the comb interval and the determined starting position of each frequency domain. 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, The pilot is mapped on the symbol by using a comb interval, so that multiple pilot sequences of one terminal can be mapped on one symbol, or multiple guides of different terminals can be mapped on one symbol. The frequency sequence is implemented to support multi-terminal multiplexing transmission pilots. When different terminals have different waveforms, different waveforms can be multiplexed and transmitted on the same resource, which can improve uplink resource utilization.

Embodiments of the present invention provide a transmission method for multiplexing transmissions supporting different waveforms. By defining a unified pilot transmission structure for different waveforms, a comb-shaped spaced pilot transmission structure is used to support terminals using different waveforms in the same frequency domain. MU-MIMO transmission on resources, or support for terminals using different waveforms to work in adjacent short TTI (Transmission Time Interval) but multiplex transmission pilots on the same symbol, thereby improving uplink resource utilization. .

The specific implementation process of the uplink transmission method on the terminal and the base station side will be described in detail below with reference to specific embodiments.

As shown in FIG. 5-1, the structure is a time slot, in which the fourth symbol is pre-defined or configured to transmit pilot symbols; and terminal A uses PU-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 ( In the 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, different terminals. The pilot 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.

Base station side:

Implementation 1:

Sending UL grant1 to terminal A (that is, downlink control carrying the uplink scheduling grant) Channel), scheduling terminal A transmits PUSCH1 on the first 4 symbols, RB1~2; the base station determines in advance the frequency domain start position that the pilot of terminal A can use according to the scheduling situation, and passes the first indication in UL grant1. The domain is notified to the terminal (of course, it can be notified to the terminal by other means, and will not be described again, the same below); for example, determining the starting position of the frequency domain of the pilot of the terminal A is the starting position of the first frequency domain, then the UL grant1 The phase 1 bit first indication field 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).

That is, 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.

At this time, it is always assumed that the data is not transmitted on the symbol of the transmission pilot, that is, the RE resource at the start position of the second frequency domain on the symbol of the transmission pilot is idle if there is no other terminal transmitting the pilot, as shown in FIG. 5- 1 is shown.

If the PUSCH2 transmission exists in the last 4 symbols (which may be for the terminal A or the other terminal), the base station may notify the PUSCH2 of the second frequency domain start position by using a notification manner similar to the foregoing PUSCH1. It is used to transmit its pilots, so that different PUSCH transmissions multiplex the transmission pilots on the same symbol, as shown in Figure 5-2, in which different or different waveforms can be used when different PUSCHs correspond to different terminals.

Implementation 2:

Before transmitting the UL grant1 to the terminal A, the base station may further determine whether there is another pilot multiplex transmission of the PUSCH on the symbol of the transmission pilot, for example, when there is no other PUSCH transmission in the last four symbols (may be For the terminal A, if it is the same for the other terminals, the base station may further determine that the second frequency domain start position on the symbol of the transmission pilot is notified to the terminal A for performing data transmission of the PUSCH1. For example, the second indication field in UL grant1 notifies whether the resource transmission data on the symbol of the transmission pilot can be used, and the frequency domain starting position that can be used for the data, and the correspondence is as shown in Table 2 below (Table 2 is only an example). Other correspondences are also included in the present invention).

Specifically, the base station transmits the 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 indicator field in the UL grant1 indicates "10", indicating that the data of PUSCH1 can be in the second frequency domain start position on the transmitted pilot symbol. Start mapping according to the comb mode, as shown in Figure 5-3.

When the base station judges that there is also a pilot multiplex transmission of other PUSCHs on the symbol of the transmission pilot, for example, when there are other PUSCH transmissions in the last four symbols, then the base station The platform may further determine that the data of the PUSCH1 does not use the resource on the symbol of the transmission pilot, and indicates the "00" by the second indication field in the UL grant1, as shown in Figure 5-2. Similarly, the base station at this time Sending UL grant2, scheduling terminal A or B transmits PUSCH2 on the last 4 symbols, RB0 and 1, and the first indication field in UL grant2 indicates "1", indicating that the pilot of PUSCH2 is second in the symbol of the transmission pilot. The domain start location starts to be mapped according to the comb mode, and the second indicator field in the UL grant 2 indicates "00", indicating that the data of the PUSCH2 does not use the resource on the symbol of the transmission pilot; in another implementation manner, the base station can be scheduled for the PUSCH1. Each RB or subband determines whether the RB or the subband can transmit data on the symbol of the transmission pilot, for example, as shown in FIG. 5-4, when PUSCH2 multiplexes pilot transmission with PUSCH1 only in RB1. In the RB2 occupied by the PUSCH1, there is no multiplexed transmission pilot with other PUSCHs on the symbol of the transmission pilot, and the idle resource on the symbol of the transmission pilot in the RB2 can be used to transmit the data of the PUSCH1. Need to extend the UL grant The second indication field, for each RB or subband, needs to have corresponding indication information indicating whether the resource transmission data on the symbol of the transmission pilot can be used in the RB or subband and the frequency domain of the resource used if available. starting point.

Implementation 3:

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 transmits the pilot using the first frequency domain starting position; Terminal 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 The first indication field in grant2 indicates "0", indicating that the terminal B uses the first frequency domain starting position to transmit the pilot, and at this time, the terminal A Same as the pilot transmission resources of terminal B, starting with the first frequency domain start position, and even RE transmissions in RB1 and 2, requiring different loop shift elements and/or orthogonal sequences (can be used only) Different loops are shifted or only orthogonal sequences are used, or both are used to ensure that the pilots of terminal A and terminal B are orthogonal, so that the receiving end can correctly resolve terminal A and terminal B on the same resource. Pilot; The loop shift value and/or the orthogonal sequence used by the pilots to be generated by the terminals A and B may be notified by a pre-agreed or higher layer signaling configuration or a third indication field in the UL grant.

At this time, 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. 5-6; if PUSCH3 overlaps with PUSCH1 and PUSCH2 resources only on part of the RBs, all the RBs of PUSCH1 and PUSCH2 may be agreed in the above manner or the second indication field in the UL grant. Indicates the transmission data not on the symbol of the transmission pilot. For PUSCH1 that uses CP-OFDM, it may also indicate for each RB or each subband that the RB or subb-band is used on the symbol of the transmission pilot. Transfer data.

Alternatively, the resource corresponding to the second frequency domain start position on the symbol of the transmission pilot may be directly used by the terminal (terminal A) using the CP-OFDM or the second indication field in the UL grant may be used for the terminal A. Data transmission, in which case the terminal (terminal B) using DFT-S-OFDM always agrees or indicates by the second indication field in the UL grant that the second frequency domain start position on the symbol of the transmission pilot cannot be used. Resource transfer data to ensure single carrier characteristics of DFT-S-OFDM waveforms (PAPR-Peak to Average Power) Ratio, peak average power ratio) / CM), if it is agreed, the UL grant may not include the second indication field; as shown in Figure 5-7.

Implementation 4:

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 transmits the pilot using the first frequency domain starting position; Terminal 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 The first indication field in grant2 indicates "1", indicating that the terminal B uses the second frequency domain starting position to transmit the pilot. At this time, the pilot transmission resources FDM of the terminal A and the terminal B are multiplexed on the same symbol, and may not Use different loop shifts and/or orthogonal sequences (of course, use is also possible), because the pilots of terminal A and terminal B can be distinguished on the resource; as shown in Figure 5-8; in this case If the comb interval is expanded, for example, 3 or greater, there will be remaining frequency domain start positions, which can be used to multiplex other PUSCHs that transmit pilots on the 4th symbol. Use, or can also be in these frequency domain start bits without other PUSCH The corresponding time-frequency resources for transmission of pilot, the frequency domain starting position of the resource corresponding to the terminal A is used for indicating data transmission.

Terminal side:

After receiving the UL grant1, the terminal A determines the transmission resource of the pilot and the transmission resource of the data according to the scheduling information and the indication information of the frequency domain starting position that can be used by the pilot and the data, and performs the transmission resource on the corresponding transmission resource. Transmission, the specific method is the same as the base station side method 1~3; for example, determining the frequency domain starting position of the pilot is the first frequency domain starting position, the comb interval is 2, and the RB number is 2, then determining the pilot sequence length is 12/2*2=12, generating a pilot sequence of length 12, If a loop shift element value and/or an orthogonal sequence is configured, the pilot sequence needs to be generated according to the loop shift element value and/or the orthogonal sequence, and then the 2 RBs scheduled on the 4th symbol are mapped. Even RE (RE0, 2, 4, 6, 8, 10) in each RB in the middle; for example, to determine that the data does not use resources on the symbol of the transmission pilot, the data can only be mapped in the first to third symbols In addition, for example, the data may be determined by using the second frequency domain start position on the symbol of the transmission pilot, and the data may be mapped on the first to third symbols and the odd RE on the fourth symbol (RE1, 3, 5, 7, 9, 11), terminal A determines the encoding and rate matching of the data according to the available resources of the data, and maps the matched data to the available resources of the data; other terminals receive the UL grant and transmit or receive the terminal A. The process of other UL grants and transmissions is similar to the above, and will not be described again.

Base station side:

The base station receives the PUSCH1 sent by the terminal A and the pilot information of the PUSCH1 according to the scheduling of the UL grant1, and receives the other UL grants in the same manner.

In the above implementation manner 2, 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 the 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 second indicator field is included in the UL grant It may depend on the waveform used by the terminal for uplink, if it is DFT-s-OFDM, it is not included, if it is CP-OFDM, it is included.

In the above embodiment, the second indication field in the UL grant 2 can also notify only whether to use the information by using only one bit of information, and if the notification is used, which frequency domain start position can be used. Obtained by other means (for example, implicitly obtained, pre-agreed except for the pilot transmission, the rest can be used for data transmission, or the resource corresponding to the starting position of the next frequency domain of the adjacent pilot is used for data transmission, etc.).

In the above embodiment, 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. Transmitting a pilot, in which a plurality of pilot mapping resource groups are determined according to a comb interval and a starting position of each frequency domain, the purpose of which is to fully utilize the idle resources on the symbols of the transmission pilots to improve the channel estimation performance of the terminal. At this time, 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 loop shifts and/or orthogonal sequences, or may be based on only one The pilot 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. Of course, the pilot positions determined by multiple frequency domain starting positions may also be used. The frequency mapping resource is used as a set, and the terminal generates a pilot sequence for the resource size. For example, in implementation mode 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. In this case, 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. B 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.

In the above embodiment, only a structure in which one slot includes 7 symbols is taken as an example, and only the pilot is transmitted in the fourth symbol as an example, and the pilot is transmitted in other symbol positions, for example, the pilot is transmitted in the first symbol. The subsequent multiple PUSCHs multiplex the transmission pilots on the first symbol, as shown in FIG. 6, or the pilots are transmitted in multiple symbols, and the methods are similar to the above embodiments, other slot structures or PUSCH transmission lengths ( The transmission method of the number of symbols occupied by the time domain is also similar to the above embodiment, and is included in the present invention and will not be described again.

In the above embodiment, 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. In the present invention, only the number of bits of the first indicator field or the second indicator 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 using a CP-OFDM terminal. ,No longer.

Based on the same technical concept, the embodiment of the present invention further provides a terminal, as shown in FIG. 8, including: a determining unit 801, configured to determine a frequency domain starting position of a pilot, where the terminal uses an CP-OFDM for uplink transmission. a pilot mapping unit 802, configured to map a pilot on a symbol of a transmission pilot according to a comb interval and a determined frequency domain start position, and a sending unit 803, configured to send the pilot mapped on the symbol to Base station.

Optionally, the determining unit 801 is specifically configured to: determine, according to a pre-arrangement with the base station, a frequency domain start position of the pilot; or determine a frequency domain of the pilot according to the configuration signaling sent by the base station. starting point.

Optionally, 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.

Optionally, 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 determined by the terminal according to configuration signaling sent by the base station. Or multiple symbols.

Optionally, the determining unit 801 is further configured to obtain, according to the following method, the pilot that is mapped on the symbol of the transmission pilot: determining a loop shift value and/or an orthogonal sequence of the pilot sequence; according to the loop The pilot is generated by shifting the meta value and/or the orthogonal sequence.

Optionally, the determining unit 801 is specifically configured to: determine, according to a pre-agreed with the base station, the loop shift value and/or the orthogonal sequence; or the terminal according to the configuration signaling sent by the base station, The loop shift value and/or the orthogonal sequence are determined.

Optionally, the frequency domain starting position is multiple. The pilot mapping unit 802 is configured to: separately map multiple symbols on the transmission pilot according to each frequency domain starting position and the comb interval. Pilot sequence.

Optionally, the terminal further includes a data mapping unit 804, configured to: determine that no data transmission is performed on the symbol of the transmission pilot; or determine a frequency domain start position for transmitting the data on the symbol of the transmission pilot. And mapping the data on the symbol of the transmission pilot according to the determined frequency domain starting position for transmitting the data and the comb interval.

Optionally, the data mapping unit 804 is specifically configured to: according to the base station Pre-agreed to determine the starting position of the frequency domain for transmitting data; or determining the starting position of the frequency domain for transmitting data according to the configuration signaling sent by the base station.

Optionally, the comb interval is pre-agreed by the terminal and the base station; or the comb interval is obtained by the terminal according to configuration signaling sent by the base station.

Based on the same technical concept, the embodiment of the present invention further provides a base station, as shown in FIG. 9, including: a determining unit 901, configured to determine a frequency domain starting position of a pilot of the terminal, where the terminal uses CP-OFDM. The uplink transmission terminal; 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.

Optionally, the frequency domain starting position of the pilot is pre-arranged by the base station and the terminal; or the frequency domain starting position of the pilot is pre-determined by the base station and sent to the terminal by using configuration signaling.

Optionally, 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.

Optionally, the symbol of the transmission pilot is one or more symbols pre-arranged by the base station and the terminal; or the symbol of the transmission pilot is determined by the base station, and one or Multiple symbols.

Optionally, the determining unit 901 is further configured to obtain, according to the following method, the pilot that is mapped on the symbol of the transmission pilot: determining a loop shift value and/or an orthogonal sequence of the pilot sequence; The pilot is obtained based on the loop shift element value and/or the orthogonal sequence.

Optionally, the loop shift value and/or the orthogonal sequence is pre-agreed by the base station and the terminal; or the loop shift value and/or the orthogonal sequence is determined by the base station, and the signaling is configured. Notify the terminal.

Optionally, the frequency domain starting position is multiple, and the pilot acquiring unit 902 is configured to: acquire, according to each frequency domain starting position and the comb interval, respectively, on the symbol of the transmission pilot Pilot sequences.

Optionally, the base station further includes a data acquiring unit 903, configured to: determine that no data transmission is performed on the symbol of the transmission pilot; or determine a frequency domain start for transmitting the data on the symbol of the transmission pilot. Position, and according to the determined frequency domain starting position for transmitting data and the comb interval, acquiring data on the symbol of the transmission pilot.

Optionally, the frequency domain starting location for transmitting data is pre-agreed by the terminal and the base station; or the frequency domain starting location for transmitting data is determined by the base station, and is sent by using configuration signaling. To the terminal.

Optionally, the comb interval is pre-arranged by the base station and the terminal; or the comb interval is determined by the base station, and is sent to the terminal by using configuration signaling.

Based on the same technical concept, an embodiment of the present invention further provides a base station, as shown in FIG. 10, including: a determining unit 1001, configured to determine a frequency domain start bit of a pilot of each terminal of the multiple terminals. At least one of the plurality of terminals is a terminal that performs uplink transmission using CP-OFDM, and at least one of the plurality of terminals is a terminal that performs uplink transmission using DFT-S-OFDM, and uplink of the multiple terminals The transmission resource has an overlap in the frequency domain; the pilot acquisition unit 1002 is configured to acquire 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.

Optionally, the frequency domain start position of each of the terminal pilots is pre-agreed by the base station and each terminal; or the frequency domain start position of the pilot is pre-determined by the base station and delivered by configuration signaling. To each terminal.

Optionally, the candidate value of the frequency domain starting 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.

Optionally, 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 each terminal is notified by configuration signaling. One or more symbols.

Optionally, the determining unit 1001 is further configured to obtain, according to the following method, the pilot that is mapped on a symbol of each terminal transmission pilot: determining a loop shift value and/or a positive of a pilot sequence of each terminal. The sequence is obtained; the pilot of each terminal is obtained according to the loop shift element value and/or the orthogonal sequence of each terminal.

Optionally, the loop shifting element value and/or the orthogonal sequence of each terminal is pre-agreed by the base station and each terminal; or the loop shifting element value and/or the orthogonal sequence of each terminal Determined for the base station and passed Signaling each terminal.

Optionally, the frequency domain starting position is multiple; the pilot acquiring unit 1002 is specifically configured to: for any terminal, according to each frequency domain starting position of the terminal and the comb interval, in the transmission A plurality of pilot sequences of the terminal are respectively acquired on the symbols of the pilots.

Optionally, the base station further includes a data acquiring unit 1003, configured to: determine, for any terminal, that no data transmission is performed on a symbol of the transmission pilot of the terminal; or determine a symbol of the transmission pilot of the terminal. The frequency domain starting position for transmitting the data, and acquiring data on the symbol of the transmission pilot of the terminal according to the determined frequency domain starting position for transmitting the data and the comb interval.

Optionally, the frequency domain starting location for transmitting data is pre-agreed by the terminal and the base station; or the frequency domain starting location for transmitting data is determined by the base station, and is sent by using configuration signaling. To the terminal.

Optionally, 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.

Referring to FIG. 11, another terminal provided by the embodiment of the present application includes: a memory 620 for storing program instructions, and a processor 600 for reading a program in the memory 620, and performing the following process: determining a frequency of the pilot. The start position of the domain, the terminal is a terminal for uplink transmission using a loop first code orthogonal frequency division multiplexing (CP-OFDM); mapping the symbols of the transmission pilot according to the comb interval and the determined starting position of the frequency domain Frequency; the pilot mapped on the symbol is sent to the base station through the transceiver 610; The transceiver 610 is configured to receive and send data under the control of the processor 600.

In addition, the processor 600 further has a function of calling the program instruction stored in the memory 620, and performing 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.

In FIG. 11, the bus bar architecture may include any number of interconnected bus bars and bridges, specifically connected by one or more processors represented by the processor 600 and various circuits of the memory represented by the memory 620. The busbar architecture can also couple various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art, and therefore, will not be further described herein. The bus interface provides an interface. Transceiver 610 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium. For different user devices, the user interface 630 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 600 is responsible for managing the bus bar architecture and the usual processing, and the memory 620 can store the data used by the processor 600 when performing operations.

Optionally, 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 device).

Referring to FIG. 12, another base station provided by the embodiment of the present application includes: a memory 520 for storing program instructions, and a processor 500 for calling program instructions stored in the memory 520 according to the obtained procedure. Execution: determining a frequency domain start position of a pilot of the terminal, the terminal is a terminal for uplink transmission using CP-OFDM; and transmitting a pilot symbol according to the comb interval and the determined frequency domain start position The pilot of the terminal is obtained by the transceiver 510; the transceiver 510 is configured to receive and send data under the control of the processor 500.

In addition, the processor 500 further has a function of calling the program instruction stored in the memory 520, and performing 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.

In FIG. 12, the bus bar architecture may include any number of interconnected bus bars and bridges, specifically connected by one or more processors represented by the processor 500 and various circuits of the memory represented by the memory 520. The busbar architecture can also couple various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art, and therefore, will not be further described herein. The bus interface provides an interface. Transceiver 510 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium. The processor 500 is responsible for managing the bus bar architecture and the usual processing, and the memory 520 can store the data used by the processor 500 when performing operations.

The processor 500 can be a central buried device (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (Complex). Programmable Logic Device, CPLD).

Referring to FIG. 13, another base station provided by the embodiment of the present application includes: The memory 505 is configured to store a program instruction, and the processor 504 is 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. At least one of the plurality of terminals is a terminal that performs uplink transmission using CP-OFDM, and at least one of the plurality of terminals performs uplink transmission using orthogonal frequency division multiplexing (DFT-S-OFDM) based on Fourier extension. The terminal, the uplink transmission resources of the multiple terminals overlap in the frequency domain; according to the comb interval and the determined starting position of each frequency domain, each transceiver transmits a pilot symbol, and each transceiver 501 acquires The pilot of the terminal; the transceiver 501 is configured to receive and transmit data under the control of the processor 504.

In addition, the processor 504 further has a function of calling the program instruction stored in the memory 505, and performing 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.

In FIG. 13, a busbar architecture (represented by busbar 506), busbar 506 can include any number of interconnected busbars and bridges, and busbar 506 would include one or more processors represented by processor 504 and The various circuits of the memory represented by the memory 505 are connected together. Bus 500 can also couple various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art and, therefore, will not be further described herein. The bus interface 503 provides an interface between the bus 506 and the transceiver 501. Transceiver 501 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium. The data processed by the processor 504 is transmitted over the wireless medium via the antenna 502, and further, the antenna 502 also receives The data is transmitted to the processor 504.

The processor 504 is responsible for managing the bus 506 and the usual processing, and can also provide various functions including timing, peripheral interface, voltage regulation, power management, and other control functions. The memory 505 can be used to store the data used by the processor 504 in performing the operations.

Optionally, the processor 504 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 device).

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Thus, the present invention can take the form of a fully hardware embodiment, a fully software embodiment, or an embodiment combining soft and hardware aspects. Moreover, the present invention may take the form of a computer program product embodied on one or more computer usable storage media (including but not limited to disk memory, CD-ROM, optical memory, etc.) containing computer usable code therein. .

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, a special purpose computer, an embedded processor or other programmable data processing device to produce a machine for executing instructions by a processor of a computer or other programmable data processing device Means are provided for implementing the functions specified in one or more of the flow or in one or more blocks of the flow chart.

These computer program instructions can also be stored in a bootable computer or other programmable The data processing device operates in a computer readable memory in a specific manner such that the instructions stored in the computer readable memory generate an article of manufacture including the instruction device, the instruction device being implemented in a flow or a flow of the flowchart and / or block diagram a function specified in a box or multiple boxes.

These computer program instructions can also be loaded onto a computer or other programmable data processing device to perform a series of operational steps on a computer or other programmable device to produce computer-implemented processing on a computer or other programmable device. The instructions executed above provide steps for implementing the functions specified in one or more blocks of the flowchart or in a block or blocks of the flowchart.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the < Therefore, the scope of the appended claims is intended to be construed as a

It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the invention without departing from the spirit and scope of the embodiments of the invention. Thus, it is intended that the present invention cover the modifications and variations of the embodiments of the invention.

Claims (34)

An uplink transmission method, comprising: determining, by a terminal, a frequency domain start position of a pilot, where the terminal is a terminal for performing uplink transmission by using a loop first code orthogonal frequency division multiplexing (CP-OFDM); the terminal is according to a comb shape The interval and the determined frequency domain start position map the pilot on the symbol of the transmission pilot; the terminal transmits the pilot mapped on the symbol to the base station. The uplink transmission method of claim 1, wherein the determining, by the terminal, a frequency domain start position of the pilot comprises: determining, by the terminal, a frequency domain start position of the pilot according to a pre-arrangement with the base station; or The terminal determines the starting position of the frequency domain of the pilot according to the configuration signaling sent by the base station. The uplink transmission method according to claim 1, wherein the candidate value of the frequency domain starting position is K, K. [0, N-1], K is an integer, and N is the comb interval, and N is a positive integer. The uplink transmission method of claim 1, wherein the symbol of the transmission pilot is one or more symbols pre-arranged according to the terminal and the base station; or the symbol of the transmission pilot is that the terminal is according to the base station One or more symbols determined by the issued configuration signaling. The uplink transmission method according to any one of claims 1 to 4, wherein the terminal obtains the pilot mapped on a symbol of a transmission pilot according to the following method: the terminal determines a loop shift value of the pilot sequence and / or orthogonal sequence; the terminal generates the pilot according to the loop shift element value and / or the orthogonal sequence. The uplink transmission method of claim 5, wherein the terminal determines a loop shift value and/or an orthogonal sequence of the pilot sequence, including: determining, by the terminal, the loop shift according to a pre-agreed with the base station a bit value and/or an orthogonal sequence; or the terminal determines the loop shift value and/or the orthogonal sequence according to the configuration signaling sent by the base station Column. The uplink transmission method according to claim 1, wherein the frequency domain starting position is multiple; the terminal maps 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 a plurality of pilot sequences on the symbols of the transmission pilots according to each frequency domain start position and the comb interval. The uplink transmission method of claim 1, wherein the method further comprises: the terminal determining that no data transmission is performed on the symbol of the transmission pilot; or the terminal determining that the symbol of the transmission pilot is used for transmitting data The frequency domain start position, and mapping the data on the symbol of the transmission pilot according to the determined frequency domain start position for transmitting data and the comb interval. The uplink transmission method of claim 8, wherein the terminal determines a frequency domain start position for transmitting data on a symbol of the transmission pilot, comprising: determining, by the terminal, a pre-agreed with the base station The frequency domain starting position of the data to be transmitted; or the terminal determines the frequency domain starting position for transmitting the data according to the configuration signaling sent by the base station. The uplink transmission method according to any one of claims 1 to 4, wherein the comb interval is a pre-agreed by the terminal and the base station; or the comb interval is a configuration signaling that is sent by the terminal according to the base station. get. An uplink transmission method, comprising: determining, by a base station, a frequency domain start position of a pilot of a terminal, where the terminal is a terminal for uplink transmission using CP-OFDM; and the base station according to the comb interval and the determined frequency domain The starting position, the pilot of the terminal is obtained on the symbol of the terminal transmitting the pilot. The uplink transmission method of claim 11, wherein a frequency domain start position of the pilot is a pre-arrangement between the base station and the terminal; or 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 uplink transmission method of claim 11, wherein the candidate value of the frequency domain starting position is K, K [0, N-1], K is an integer, and N is the comb interval, and N is a positive integer. The uplink transmission method of claim 11, wherein the symbol of the transmission pilot is one or more symbols pre-arranged by the base station and the terminal; or the symbol of the transmission pilot is determined by the base station and passed The configuration signaling signals one or more symbols of the terminal. The uplink transmission method according to any one of claims 11 to 14, wherein the base station obtains the pilot mapped on a symbol of a transmission pilot according to the following method: the base station determines a loop shift of the pilot sequence a value and/or an orthogonal sequence; the base station acquires the pilot according to the loop shift element value and/or the orthogonal sequence. The uplink transmission method of claim 15, wherein the loop shift value and/or the orthogonal sequence is pre-agreed by the base station and the terminal; or the loop shift value and/or the orthogonal sequence is the The base station determines and notifies the terminal by configuration signaling. The uplink transmission method of claim 11, wherein the frequency domain starting position is multiple; the base station acquires the pilot symbol of the terminal according to the comb interval and the determined frequency domain starting position. The pilot of the terminal includes: the base station separately acquiring a plurality of pilot sequences on the symbol of the transmission pilot according to each frequency domain starting position and the comb interval. The uplink transmission method of claim 11, wherein the method further comprises: the base station determining that no data transmission is performed on the symbol of the transmission pilot; or the base station determines that the transmission pilot is used on the symbol Transmitting a frequency domain start position of the data, and acquiring data on the symbol of the transmission pilot according to the determined frequency domain start position for transmitting the data and the comb interval. The uplink transmission method of claim 18, wherein the frequency domain start bit for transmitting data The terminal is pre-agreed with the base station; or the frequency domain starting position for transmitting the data is determined by the base station, and is sent to the terminal by using configuration signaling. The uplink transmission method according to any one of claims 11 to 14, wherein the comb interval is that the base station and the terminal pre-arrange; or the comb interval is determined by the base station, and is delivered by using configuration signaling To the terminal. An uplink transmission method, comprising: determining, by a base station, 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 performing uplink transmission using CP-OFDM a terminal, where at least one of the plurality of terminals 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 uplink transmission method of claim 21, wherein a frequency domain start position of each of the terminal pilots is pre-agreed by the base station and each terminal; or a frequency domain start position of the pilot is the base station It is pre-determined and delivered to each terminal through configuration signaling. The uplink transmission method according to claim 21, wherein 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 uplink transmission method of claim 21, wherein 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 symbols for each terminal are notified by configuration signaling. The uplink transmission method according to any one of claims 21 to 24, wherein the base station obtains the pilot mapped on a symbol of a transmission pilot according to the following method: the base station determines a pilot sequence of each terminal Loop shift value and/or orthogonal sequence; The base station acquires the pilot of each terminal according to the loop shift element value and/or the orthogonal sequence of each terminal. The uplink transmission method of claim 25, wherein the loop shift element value and/or the orthogonal sequence of each terminal is pre-agreed by the base station and each terminal; or the loop shift of each terminal The bit values and/or orthogonal sequences are determined for the base station and each terminal is notified by configuration signaling. The uplink transmission method of claim 21, wherein the frequency domain starting position is multiple; the base station transmits pilots at each terminal according to the comb interval and the determined frequency domain starting position of each terminal. Acquiring the pilot of each terminal on the symbol, including: for any terminal, the base station separately acquires the terminal on the symbol of the transmission pilot according to each frequency domain starting position of the terminal and the comb interval Multiple pilot sequences. The uplink transmission method of claim 21, wherein the method further comprises: for any 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 the The frequency domain start position of the transmission pilot of the terminal is used to transmit the data, and according to the determined frequency domain starting position for transmitting the data and the comb interval, the symbol of the transmission pilot of the terminal is obtained. data. The uplink transmission method of claim 28, wherein the frequency domain starting position for transmitting data is pre-agreed by the terminal and the base station; or the frequency domain starting position for transmitting data is the base station Determine and deliver the configuration to the terminal through configuration signaling. The uplink transmission method according to any one of claims 21 to 24, wherein 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 delivered by configuration signaling To each terminal. A terminal, comprising: a memory for storing a program instruction; a processor, configured to invoke a program instruction stored in the memory, and executing according to the obtained program: determining a frequency domain starting position of the pilot, The terminal uses the loop first code orthogonal frequency division multiplexing a terminal for performing uplink transmission by CP-OFDM; mapping a pilot on a symbol of a transmission pilot according to a comb interval and a determined frequency domain start position; and transmitting a pilot mapped on the symbol to the base station. A base station, comprising: a memory for storing a program instruction; a processor for calling a program instruction stored in the memory, executing according to the obtained program: determining a frequency domain start of a pilot of the terminal Position, the terminal is a terminal that uses CP-OFDM for uplink transmission; and according to the comb interval and the determined frequency domain start position, the pilot of the terminal is obtained on the symbol of the terminal transmission pilot. A base station, comprising: a memory for storing program instructions; a processor for calling program instructions stored in the memory, executing according to the obtained program: determining each terminal of the plurality of terminals a frequency domain start position of the pilot, at least one of the plurality of terminals being a terminal for uplink transmission using CP-OFDM, and at least one of the plurality of terminals is using orthogonal frequency division multiplexing based on Fourier extension A terminal for uplink transmission by DFT-S-OFDM, where uplink transmission resources of the multiple terminals overlap in a frequency domain; and symbols of pilots are transmitted at each terminal according to a comb interval and a determined starting position of each frequency domain Get the pilot of each terminal. A non-transitory computer storage medium, characterized in that the non-transitory computer storage medium stores computer executable instructions for causing the computer to perform the method of any one of claims 1 to 30.