WO2018090327A1 - 传输参考信号的方法和通信设备 - Google Patents

传输参考信号的方法和通信设备 Download PDF

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Publication number
WO2018090327A1
WO2018090327A1 PCT/CN2016/106417 CN2016106417W WO2018090327A1 WO 2018090327 A1 WO2018090327 A1 WO 2018090327A1 CN 2016106417 W CN2016106417 W CN 2016106417W WO 2018090327 A1 WO2018090327 A1 WO 2018090327A1
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WIPO (PCT)
Prior art keywords
time domain
domain resource
resource unit
reference signal
transmitting
Prior art date
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PCT/CN2016/106417
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English (en)
French (fr)
Inventor
唐海
Original Assignee
广东欧珀移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority to CN202110437855.0A priority Critical patent/CN113206731B/zh
Priority to PCT/CN2016/106417 priority patent/WO2018090327A1/zh
Priority to JP2019526579A priority patent/JP7091329B2/ja
Priority to MX2019005830A priority patent/MX2019005830A/es
Priority to KR1020197014545A priority patent/KR20190082806A/ko
Priority to EP16921900.3A priority patent/EP3531602B1/en
Priority to CA3044093A priority patent/CA3044093C/en
Application filed by 广东欧珀移动通信有限公司 filed Critical 广东欧珀移动通信有限公司
Priority to BR112019010049-0A priority patent/BR112019010049B1/pt
Priority to AU2016430101A priority patent/AU2016430101B2/en
Priority to CN201680090942.0A priority patent/CN109964435B/zh
Priority to US16/461,352 priority patent/US11128418B2/en
Priority to RU2019118874A priority patent/RU2721840C1/ru
Priority to CN202110436160.0A priority patent/CN113206730A/zh
Priority to TW106138251A priority patent/TWI737844B/zh
Publication of WO2018090327A1 publication Critical patent/WO2018090327A1/zh
Priority to PH12019501109A priority patent/PH12019501109A1/en
Priority to IL266710A priority patent/IL266710B2/en
Priority to ZA2019/03277A priority patent/ZA201903277B/en
Priority to US17/410,972 priority patent/US11736250B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

Definitions

  • Embodiments of the present invention relate to the field of wireless communications, and, more particularly, to a method and a communication device for transmitting uplink data.
  • the downlink reference signal and the downlink data usually use Frequency Division Multiplexing (FDM), and the reference signal is used to transmit data.
  • FDM Frequency Division Multiplexing
  • the part of the symbol is transmitted on a subcarrier.
  • the terminal device can detect the reference signal after receiving multiple Orthogonal Frequency Division Multiplexing (OFDM) symbols, thereby performing data demodulation or channel state information based on the reference signal.
  • OFDM Orthogonal Frequency Division Multiplexing
  • CSI State Information
  • the embodiments of the present invention provide a method and a communication device for transmitting a reference signal, which can reduce the delay caused by the reference signal transmission.
  • a method for transmitting a reference signal may be performed by a terminal device or a network device, and the method includes: determining at least one time domain resource unit for transmitting a reference signal; The reference signal is transmitted on a time domain resource unit.
  • the delay of the reference signal transmission is reduced, thereby reducing the delay.
  • the delay of data demodulation or CSI measurement based on the reference signal also reduces the complexity of the control signaling overhead and rate matching for indicating rate matching resources.
  • the at least one time domain resource unit is not used to transmit control information and/or data.
  • the transmission periods of different reference signals are different, there may be only one type of reference signal in one time slot or subframe at some time, and multiple types of reference signals may be present in other times. If at least one time domain transmission for transmitting a reference signal in one time slot or subframe There is only one type of pilot signal in the transmission unit, such as DMRS, and the reserved resources for transmitting other types of reference signals cannot be used to transmit data and/or control information, and can be used to transmit other terminal devices. Other types of reference signals.
  • the method may be performed by the terminal device, and the terminal device that transmits the reference signal on the at least one time domain resource unit does not transmit the terminal device on the at least one time domain resource unit. Control information and/or data.
  • the method may also be performed by a network device, wherein the at least one time domain resource unit is not used to transmit control information and/or data, but only used to transmit a reference signal; or the network device may also be in the at least one time domain. And transmitting, by the resource unit, a reference signal of the terminal device to a terminal device, and performing control information with other terminal devices on a resource location of the at least one time domain resource unit that does not transmit the reference signal of the terminal device And / or the transmission of data.
  • the method is performed by a terminal device, where determining the resource information of the at least one time domain resource unit includes: receiving, by the terminal device, a bearer sent by a network device Resource information in higher layer signaling, or the resource information carried in downlink control information DCI, wherein the resource information includes a location of the at least one time domain resource unit, and/or the at least one time domain The number of resource units.
  • the method is performed by a network device, after the determining the resource information of the at least one time domain resource unit, the method further includes: the network device Transmitting, to the terminal device, resource information carried in the high layer signaling, or the resource information carried in the DCI, where the resource information includes a location of the at least one time domain resource unit, and/or the at least one time domain The number of resource units.
  • the network device may carry the resource information of the at least one time domain resource unit in the broadcast information by using a broadcast manner, or use the first N OFDM symbols used for transmitting the control information in the time slot in which the reference signal is transmitted.
  • the transmitted DCI is used to indicate resource information of the at least one time domain resource unit.
  • the at least one time domain resource unit may also be pre-agreed between the terminal device and the network device.
  • the time slot or the subframe to which the at least one time domain resource unit belongs is further used to transmit control information and/or data.
  • the determining, by the at least one time domain resource unit for transmitting the reference signal includes: according to a time domain resource unit used for transmitting the control information a location, and/or a location of a time domain resource unit for transmitting the data, determining a location of the at least one time domain resource unit.
  • the at least one time domain resource unit for transmitting the reference signal may be N time domain resource units located after the time domain resource unit occupied by the control information, that is, N is at least one time domain resource for transmitting the reference signal.
  • the number of units, the value of N may be determined by any of the methods described above, such as by the network device transmitting the number of at least one time domain resource element carried on the higher layer signaling or DCI.
  • at least one time domain unit transmitting the reference signal is the time slot or the first N in the subframe. Time domain resource unit.
  • the at least one time domain resource unit is located before a time domain resource unit for transmitting the control information, or the at least one time domain resource unit is located for Before transmitting the time domain resource unit of the data; or the at least one time domain resource unit is located after the time domain resource unit for transmitting the control information, and before the time domain resource unit for transmitting the data; Or the at least one time domain resource unit is located at a location of the associated time slot or the subframe.
  • the reference signal can be received as early as possible before the data processing process such as data demodulation, thereby avoiding the delay caused by the reference signal transmission.
  • a length of each time domain resource unit in the at least one time domain resource unit is determined according to a subcarrier spacing used to transmit the data.
  • the subcarrier spacing used to transmit the reference signal is different from the subcarrier spacing used to transmit the data.
  • the at least one time domain resource unit is configured to transmit multiple types of reference signals, and different types of reference signals respectively have different transmission parameters, where the transmission is different.
  • the parameters include at least one of: a subcarrier spacing for transmitting a reference signal, a transmission bandwidth for transmitting a reference signal, a precoding matrix for precoding the reference signal, and a beam assignment for the reference signal Shape beam parameters.
  • the terminal device and the network device may transmit multiple types of reference signals in the at least one time domain resource unit, and may transmit different types of reference signals using different subcarrier intervals. Terminal devices and network devices can also use different transmission bandwidths to transmit different types of reference signals. The terminal device and the network device can also precode different types of reference signals using different precoding matrices or beamform different types of reference signals using different beams.
  • the at least one time domain resource unit is configured to transmit multiple types of reference signals, and the different types of reference signals are time division multiplexed TDM or frequency division multiplexed FDM. Way to transfer.
  • the time domain resource unit is an orthogonal frequency division multiplexing OFDM symbol.
  • the reference signal is at least one of the following types: a channel state information reference signal CSI-RS, a demodulation reference signal DMRS, a sounding reference signal SRS, and phase tracking.
  • CSI-RS channel state information reference signal
  • DMRS demodulation reference signal
  • SRS sounding reference signal
  • phase tracking Reference signal PTSR and beam reference signal BRS.
  • a communication device in a second aspect, can be used to perform various processes performed by a terminal device or a network device in a method of transmitting a reference signal in the first aspect and various implementations described above.
  • the communication device includes: a determining unit, configured to determine at least one time domain resource unit for transmitting a reference signal; and a transmitting unit, configured to transmit the reference on the at least one time domain resource unit determined by the determining unit signal.
  • a communication device which can be used to perform various processes performed by a terminal device or a network device in a method of transmitting a reference signal in the foregoing first aspect and various implementations.
  • the communication device includes a processor and a transceiver.
  • the processor is configured to determine at least one time domain resource unit for transmitting a reference signal; the transceiver is configured to transmit the reference signal on the at least one time domain resource unit determined by the processor.
  • a computer readable storage medium storing a program causing a terminal device or a network device to perform the first aspect described above, and any of its various implementations A method of transmitting a reference signal.
  • the method for transmitting a reference signal can reduce the delay caused by the reference signal transmission and reduce the data demodulation or CSI measurement by transmitting the reference signal to the specific OFDM symbol in the front.
  • the delay can also reduce the control signaling overhead for indicating rate matching resources and the complexity of rate matching.
  • FIG. 1 is a schematic structural diagram of an application scenario according to an embodiment of the present invention.
  • FIG. 2 is a flow interaction diagram of a method of transmitting a reference signal according to an embodiment of the present invention.
  • FIG. 3 is a flow interaction diagram of a method of transmitting a reference signal according to an embodiment of the present invention.
  • FIG. 4(a) is a schematic diagram of a time domain resource unit for transmitting a reference signal according to an embodiment of the present invention.
  • 4(b) is a schematic diagram of a time domain resource unit for transmitting a reference signal according to an embodiment of the present invention.
  • 4(c) is a schematic diagram of a time domain resource unit for transmitting a reference signal according to an embodiment of the present invention.
  • 4(d) is a schematic diagram of a time domain resource unit for transmitting a reference signal according to an embodiment of the present invention.
  • 4(e) is a schematic diagram of a time domain resource unit for transmitting a reference signal according to an embodiment of the present invention.
  • FIG. 5 is a structural block diagram of a communication device according to an embodiment of the present invention.
  • FIG. 6 is a structural block diagram of a communication device according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a system chip according to an embodiment of the present invention.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • a terminal device may also be referred to as a User Equipment ("UE"), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless communication device. , user agent or user device.
  • UE User Equipment
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol ("SIP") phone, a Wireless Local Loop (WLL) station, or a personal digital assistant (Personal Digital Assistant, Referred to as "PDA”), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolved PLMN network. Wait.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the present invention describes various embodiments in connection with a network device.
  • the network device may be a device for communicating with the terminal device, for example, may be a base station (Base Transceiver Station, abbreviated as "BTS”) in the GSM system or CDMA, or a base station (NodeB in the WCDMA system).
  • BTS Base Transceiver Station
  • NodeB base station
  • the abbreviation "NB” may also be an evolved base station (Evolutional Node B, "eNB” or "eNodeB”) in the LTE system, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and A network side device in a future 5G network or a network device in a future evolved PLMN network.
  • the reference signal is also referred to as a pilot signal.
  • the communication system in FIG. 1 may include a network device 10 and a terminal device 20.
  • the network device 10 is configured to provide communication services for the terminal device 20 and access the core network.
  • the terminal device 20 accesses the network by searching for synchronization signals, broadcast signals, and the like transmitted by the network device 10, thereby performing communication with the network.
  • the arrows shown in FIG. 1 may represent uplink/downlink transmissions by a cellular link between the terminal device 20 and the network device 10.
  • the network in the embodiment of the present invention may refer to a Public Land Mobile Network (PLMN) or a Device to Device (D2D) network or a Machine to Machine (Machine to Machine). /Man, referred to as "M2M” network or other network
  • PLMN Public Land Mobile Network
  • D2D Device to Device
  • Machine to Machine Machine to Machine
  • FIG. 1 is only a simplified schematic diagram of the example, and the network may also include other terminal devices, which are not shown in FIG.
  • 2 is a flow interaction diagram of a method of transmitting a reference signal in accordance with an embodiment of the present invention.
  • 2 shows a network device and a terminal device, which may be, for example, the network device 10 shown in FIG. 1, which may be, for example, the terminal device 20 shown in FIG. 1.
  • the reference signals are multiplexed and transmitted in a specific Orthogonal Frequency Division Multiplexing ("OFDM") symbol, and the specific OFDM symbol is specifically used for transmitting the reference signal.
  • OFDM symbol thereby being able to receive the reference signal in time to reduce the delay of data demodulation or CSI measurement based on the reference signal, and also reduce control signaling overhead for indicating rate-matching resources And the complexity of rate matching.
  • the specific process of transmitting the reference signal includes:
  • the network device determines at least one time domain resource unit for transmitting the reference signal.
  • the network device determines at least one time domain resource unit for transmitting the reference signal before transmitting the reference signal with the terminal device, and sends the reference signal to the terminal device on the at least one time domain resource unit. Or receiving a reference signal sent by the terminal device on the at least one time domain resource unit.
  • the terminal device determines at least one time domain resource unit for transmitting the reference signal.
  • the terminal device determines, before the transmission of the reference signal with the network device, at least one time domain resource unit for transmitting the reference signal, and receives the reference signal sent by the network device on the at least one time domain resource unit. Or send the reference signal to the network device.
  • the at least one time domain resource unit is a time domain resource unit for transmitting a reference signal, and can be used to transmit at least one type of reference signal. That is, the at least one time domain resource unit may be used to transmit the reference signal, and may also be used to transmit other types of reference signals than the reference signal.
  • the reference signal is not transmitted by part of the subcarriers on the time domain resource unit of the multiplexed transmission data, but is transmitted through the specific at least one time domain resource unit, the delay of the reference signal transmission is reduced. Thereby, the delay of data demodulation or CSI measurement based on the reference signal is reduced, and the control signaling overhead for indicating the rate matching resource and the complexity of performing rate matching are also reduced.
  • the reference signal may be a reference signal of the terminal device itself, or may be a reference signal of other terminal devices. Therefore, the at least one time domain resource unit may include a time domain resource unit used by the terminal device to transmit the reference signal, and may also include a time domain resource unit reserved for the other terminal device to transmit the reference signal.
  • the time domain resource unit is an orthogonal frequency division multiplexing OFDM symbol.
  • time domain resource unit may also be a mini-slot, a slot, or other time domain resource unit defined in the 5G system, which is not limited in the present invention.
  • the reference signal in the embodiment of the present invention may include at least one of the following: a channel state information reference signal (CSI-RS), and a demodulation reference signal (De Modulation Reference) Signal (referred to as “DMRS”), Sounding Reference Signal (SRS), Phase Tracking Reference Signal (PTSR), and Beam-specific Reference Signal (referred to as “Beam-specific Reference Signal”) BRS”).
  • CSI-RS channel state information reference signal
  • DMRS demodulation reference signal
  • SRS Sounding Reference Signal
  • PTSR Phase Tracking Reference Signal
  • Beam-specific Reference Signal Beam-specific Reference Signal
  • the transmission of the reference signal may be the transmission of the reference signal, that is, the uplink reference signal, by the terminal device to the network device, or the transmission of the reference signal, that is, the downlink reference signal, by the network device to the terminal device.
  • At least one time domain resource unit for transmitting the reference signal is not used to transmit control information and/or data.
  • the method may be performed by the terminal device, and then the at least one The terminal device transmitting the reference signal on the time domain resource unit does not transmit the control information and/or data of the terminal device on the at least one time domain resource unit.
  • the method may also be performed by a network device, wherein the at least one time domain resource unit is not used to transmit control information and/or data, but only used to transmit a reference signal; or the network device may also be in the at least one time domain. And transmitting, by the resource unit, a reference signal of the terminal device to a terminal device, and performing control information with other terminal devices on a resource location of the at least one time domain resource unit that does not transmit the reference signal of the terminal device And / or the transmission of data.
  • the terminal device assumes that all physical resources within the time domain resource unit are not used to transmit data.
  • the terminal device needs to perform rate matching on all physical resources in the at least one time domain resource unit. For example, if the time domain resource element used for transmitting the reference signal is the 3rd OFDM symbol in one slot, and the first two OFDM symbols are used to transmit control information, the data can only be started from the 4th OFDM symbol. Resource mapping.
  • the terminal device can also assume that all physical resources in the time domain resource unit are not used to transmit control information.
  • the at least one time domain resource unit cannot be configured for the terminal device to transmit the control information for the terminal device.
  • the time domain resource unit for transmitting the reference signal includes 1 OFDM symbol, and the transmission of the control information requires 2 OFDM symbols, and the reference signal can be transmitted in the first OFDM symbol of one slot, and the control information is The second OFDM symbol of the slot and the third OFDM symbol are transmitted; or the control information may be transmitted in the first OFDM symbol and the second OFDM symbol of one slot, and the third OFDM symbol of the reference signal in the slot transmission.
  • the transmission periods of different reference signals are different, there may be only one type of reference signal in one time slot or subframe at some time, and multiple types of reference signals may be present in other times. If there is only one type of pilot signal such as DMRS in at least one time domain transmission unit for transmitting a reference signal in one slot or subframe, the reserved resources for transmitting other types of reference signals cannot It is used to transmit data and/or control information and can be used to transmit other types of reference signals of other terminal devices.
  • the at least one time domain resource unit may be pre-agreed between the terminal device and the network device.
  • the terminal device and the network device can directly transmit the reference signal on the agreed at least one time domain resource unit. For example, it may be agreed in the protocol that if control information needs to be transmitted on one time slot, the third OFDM symbol of the time slot is used to transmit the reference signal, otherwise the first OFDM symbol in the time slot is used to transmit the reference signal.
  • the at least one time domain resource unit for transmitting the reference signal may also be determined by the network device and notified to the terminal device.
  • the network device may determine the at least one time domain resource unit by itself, and send the configured resource information of the at least one time domain resource unit to the terminal device, so that the terminal device may acquire, from the received resource information, a reference signal for transmitting the reference signal.
  • the at least one time domain resource unit may be determined by the network device and notified to the terminal device.
  • the network device may determine the at least one time domain resource unit by itself, and send the configured resource information of the at least one time domain resource unit to the terminal device, so that the terminal device may acquire, from the received resource information, a reference signal for transmitting the reference signal.
  • the at least one time domain resource unit may be determined by the network device and notified to the terminal device.
  • the terminal device may determine the location of the at least one time domain resource unit by receiving resource information of the at least one time domain resource unit sent by the network device. Or number. That is, the method can include 221 and 222 before 220, and 220 can be replaced by 223.
  • the network device sends the resource information of the at least one time domain resource unit to the terminal device.
  • the resource information includes a location of the at least one time domain resource unit, and/or a number of the at least one resource unit.
  • the terminal device receives the resource information sent by the network device.
  • the terminal device determines, according to the resource information, the at least one time domain resource unit that is used to transmit the reference signal.
  • the network device may send the resource information that is carried in the high layer signaling to the terminal device, so that after receiving the resource information that is sent by the network device and is carried in the high layer signaling, the terminal device may determine, according to the high layer signaling, Transmitting at least one time domain resource unit of the reference signal.
  • the network device may carry the resource information of the at least one time domain resource unit in the broadcast information by means of a broadcast.
  • the network device may send the resource information that is carried in the Downlink Control Information (DCI) to the terminal device, so that the terminal device receives the resource information that is sent by the network device and is carried in the DCI.
  • DCI Downlink Control Information
  • At least one city resource unit for transmitting a reference signal is determined according to the DCI.
  • resource information of the at least one time domain resource unit is indicated by DCI transmitted in the first N OFDM symbols used for transmitting control information.
  • the time slot or subframe to which the at least one time domain resource unit belongs is also used to transmit control information and/or data.
  • the terminal device may transmit control information and/or data of the terminal device on other time domain resource units in the time slot or subframe to which the at least one time domain resource unit belongs, and the network device may also be in the at least one time.
  • Transmission of control information and/or data is performed with the terminal device or other terminal device.
  • the OFDM symbol occupied by the at least one time domain resource unit in the slot to which it belongs belongs to the third OFDM symbol
  • the first OFDM symbol and the second OFDM symbol of the time slot may be used to transmit control information.
  • the 4th OFDM symbol to the 7th OFDM symbol of the slot can be used to transmit data.
  • the terminal device or the network device may also be based on the location of the time domain resource unit for transmitting the control information on the time slot or subframe to which it belongs, and/or the location of the time domain resource unit for transmitting the data.
  • a location of at least one time domain resource unit for transmitting a reference signal is determined.
  • the at least one time domain resource unit for transmitting the reference signal may be N time domain resource units located after the time domain resource unit occupied by the control information, that is, when N is at least one of transmitting the reference signal.
  • the number of domain resource units, the value of N may be determined by any of the foregoing methods, such as by the network device transmitting the number of at least one time domain resource element carried on the higher layer signaling or DCI.
  • the time slot or the subframe in which the reference signal belongs does not have a time domain resource unit for transmitting control information
  • at least one time domain unit that transmits the reference signal is the time slot or the front of the subframe. N time domain resource units.
  • the transmission control information occupies the first OFDM symbol and the second OFDM symbol of one slot, and the terminal device receives the high layer signaling sent by the network device, or receives the network device on the first two OFDM symbols.
  • the transmitted DCI determines that the number of OFDM symbols used to transmit the reference signal is 2, and the terminal device can transmit the reference signal on the 3rd and 4th OFDM symbols of the slot.
  • At least one time domain resource unit of the transmission reference signal may be at the location of the time slot or the subframe. Located before the time domain resource unit for transmitting the control information; or the at least one time domain resource unit is located before the time domain resource unit for transmitting the data; or the at least one time domain resource unit is located for transmitting the control information After the time domain resource unit, and before the time domain resource unit for transmitting the data; or the at least one time domain resource unit is located at the associated time slot or the start position of the subframe.
  • the terminal device and the network device can receive the reference signal before the data processing process such as data demodulation, thereby avoiding the delay caused by the reference signal transmission.
  • the length of each time domain resource unit in the at least one time domain resource unit may be determined according to a subcarrier spacing used to transmit data in a time slot or a subframe to which the reference signal belongs. That is, the length of each time domain resource unit is determined based on the subcarrier spacing used by the reference signal in the same time slot or data transmitted in the same subframe.
  • the correspondence between the subcarrier spacing and the length of one time domain resource unit may be pre-agreed by the network side and the terminal device, or the terminal device may directly calculate the length of the one time domain resource unit according to the subcarrier spacing.
  • the subcarrier spacing for transmitting the reference signal may be the same as or different from the subcarrier spacing for transmitting the data.
  • the transmission data in the time slot or subframe uses a subcarrier spacing of 15 kHz
  • the transmission reference signal may use a subcarrier spacing of 60 kHz.
  • a time domain resource unit determined by the subcarrier spacing can transmit reference signals of four time domain resource units. In this case, the four time domain resource units can be used for different types of reference signals for time division multiplexing TDM transmission.
  • the at least one time domain resource unit may be configured to transmit multiple types of reference signals, and different types of reference signals respectively have different transmission parameters, and the transmission parameters include at least one of the following: for transmitting A subcarrier spacing of the reference signal, a transmission bandwidth for transmitting the reference signal, a precoding matrix for precoding the reference signal, and a beam parameter for beamforming the reference signal.
  • the terminal device and the network device may transmit multiple types of reference signals in the at least one time domain resource unit, and may transmit different types of reference signals using different subcarrier intervals.
  • the subcarrier spacing of different types of pilot signals can be configured by the network device.
  • the terminal transmits CSI-RS and DMRS in one OFDM symbol, where the CSI-RS uses a subcarrier spacing of 60 kHz and the DMRS uses a subcarrier spacing of 30 kHz.
  • Terminal devices and network devices can also use different transmission bandwidths to transmit different types of reference signals.
  • the transmission of the DMRS generally uses the same transmission bandwidth as the transmission data of the terminal device in the slot or subframe to which it belongs, for data demodulation; and other reference signals such as SRS, PTS, CSI-RS, and BRS are generally adopted by the network device.
  • Downlink signaling specifically configured transmission bandwidth.
  • the terminal device and the network device can also precode different types of reference signals using different precoding matrices or beamform different types of reference signals using different beams.
  • the precoding matrix used by the DMRS is generally a precoding matrix used by the terminal device to transmit data in a subframe or a time slot to which the DMRS belongs, or the terminal device uses the DMRS.
  • the same beam is used for shaping the data for data demodulation; and for other reference signals such as SRS, PTS, CSI-RS and BRS, a beam different from the data transmitted by the terminal device can be used for shaping.
  • the precoding of the digital domain is generally not performed (that is, the unit matrix is used as the precoding matrix).
  • the at least one time domain resource unit is configured to transmit multiple types of reference signals, and different types of reference signals are transmitted by using time division multiplexing TDM or frequency division multiplexing FDM.
  • the plurality of reference signals occupy different time domain resources and/or frequency domain resources in the at least one local resource unit.
  • the at least one time domain resource unit for transmitting a reference signal includes one OFDM symbol, and the OFDM symbol is located before a time domain resource unit that transmits downlink data, and the terminal device
  • Two reference signals, CSI-RS and DMRS may be simultaneously transmitted in the OFDM symbol, wherein the CSI-RS and the DMRS occupy different subcarriers in the OFDM symbol.
  • CSI-RS and DMRS may be simultaneously transmitted in the OFDM symbol, wherein the CSI-RS and the DMRS occupy different subcarriers in the OFDM symbol.
  • the OFDM symbol is located after the time domain resource unit of the transmission control information and is located before the time domain resource unit that transmits the downlink data, and the terminal device uses the subcarrier spacing of 15 kHz in the current time slot.
  • the data is transmitted, and the SRS and the DMRS are transmitted in the TDM manner in the OFDM symbol, where both the DMRS and the SRS use a subcarrier spacing of 30 kHz, respectively occupying half of the OFDM symbols. For example, as shown in FIG.
  • the terminal device transmits data in a sub-carrier interval of 15 kHz in the current time slot, and transmits CSI-RS and DMRS in a TDM manner in the OFDM symbol, wherein the DMRS uses a sub-carrier of 30 kHz.
  • Carrier spacing, CSI-RS uses a carrier spacing of 60 kHz, CSI-RS and DMRS occupy half of OFDM symbols respectively, and two CSI-RS sub-symbols can be transmitted in half OFDM symbols occupied by CSI-RS.
  • the transmission may be performed by TDM and FDM, as shown in FIG. 4(d), and TDM is adopted in the OFDM symbol.
  • the CSI-RS and the DMRS are transmitted in a manner, and the CSI-RS and the DMRS respectively occupy half of the OFDM symbols, and two CSI-RS sub-symbols can be transmitted in the half OFDM symbol occupied by the CSI-RS, and are used for transmitting the CSI-RS.
  • CSI-RS and PTRS occupy different subcarriers in the half OFDM symbol.
  • uplink reference signals such as SRS and DMRS
  • transmission may also be performed in the foregoing manner.
  • SRS and DMRS are performed, and the terminal device uses a subcarrier spacing of 15 kHz in the current time slot.
  • the DMRS adopts a subcarrier spacing of 30 kHz
  • the SRS adopts a carrier spacing of 60 kHz
  • the SRS and the DMRS respectively occupy half of the OFDM symbols.
  • Two SRS sub-symbols can be transmitted in half of the OFDM symbols occupied by the SRS.
  • the reference signal can be transmitted between the two at the at least one time domain resource unit.
  • the reference signal is a downlink reference signal, such as a channel state information reference signal CSI-RS, a cell-specific reference signal CRS, and a demodulation reference signal DMRS, etc., perform 230 and 240; if the reference signal is an uplink reference signal, for example, a sounding reference signal SRS For the uplink DMRS, etc., 250 and 260 are executed.
  • CSI-RS channel state information reference signal
  • CRS cell-specific reference signal
  • DMRS demodulation reference signal
  • the network device sends a reference signal to the terminal device on the at least one time domain resource unit.
  • the terminal device receives the reference signal on the at least one time domain resource unit.
  • the terminal device sends a reference signal to the network device on the at least one time domain resource unit.
  • the network device receives the reference signal on the at least one time domain resource unit.
  • the method for transmitting a reference signal in the embodiment of the present invention transmits the reference signal to a specific OFDM symbol in front, so that the reference signal can be acquired in time, and the delay of performing data demodulation or CSI measurement is reduced.
  • the complexity of the control signaling overhead and rate matching for indicating rate matching resources is also reduced.
  • FIG. 5 shows a schematic block diagram of a communication device 500 in accordance with an embodiment of the present invention.
  • the terminal device 500 includes a determining unit 510 and a transmitting unit 520.
  • a determining unit 510 configured to determine at least one time domain resource unit for transmitting a reference signal
  • the transmitting unit 520 is configured to transmit the reference signal on the at least one time domain resource unit determined by the determining unit 510.
  • the reference signal by transmitting the reference signal to a specific OFDM symbol in front, the reference signal can be acquired in time, and the delay of performing data demodulation or CSI measurement is reduced, and the indication is also lowered. Rate control resource control signaling overhead and complexity of rate matching.
  • the at least one time domain resource unit is not used to transmit control information and/or data.
  • the communication device is a terminal device
  • the transmission unit 520 is further configured to: receive resource information that is sent by the network device and is carried in the high-layer signaling, or the resource information that is carried in the downlink control information DCI,
  • the resource information includes a location of the at least one time domain resource unit, and/or a number of the at least one time domain resource unit.
  • the communication device is a network device
  • the transmitting unit 520 is further configured to: after determining the resource information of the at least one time domain resource unit, send the bearer to the high layer letter to the terminal device.
  • the time slot or subframe to which the at least one time domain resource unit belongs is also used to transmit control information and/or data.
  • the determining unit 510 is specifically configured to: determine a location of the at least one time domain resource unit according to a location of a time domain resource unit used to transmit the control information.
  • the at least one time domain resource unit is located before the time domain resource unit for transmitting the control information; or the at least one time domain resource unit is located before the time domain resource unit for transmitting the data; Or the at least one time domain resource unit is located after the time domain resource unit for transmitting the control information, and is located before the time domain resource unit for transmitting the data; or the at least one time domain resource unit is located at a location The time slot or the starting position of the subframe.
  • the length of each time domain resource unit in the at least one time domain resource unit is determined according to a subcarrier spacing used to transmit the data.
  • the subcarrier spacing used to transmit the reference signal is not the same as the subcarrier spacing used to transmit the data.
  • the at least one time domain resource unit is configured to transmit multiple types of reference signals, and the transmission parameters corresponding to different types of reference signals are different, and the transmission parameters include at least one of the following: A subcarrier spacing for transmitting a reference signal, a transmission bandwidth for transmitting a reference signal, a precoding matrix for precoding the reference signal, and a beam parameter for beamforming the reference signal.
  • the time domain resource unit is an orthogonal frequency division multiplexing OFDM symbol.
  • the reference signal is at least one of the following types: a channel state information reference signal CSI-RS, a demodulation reference signal DMRS, a sounding reference signal SRS, a phase tracking reference signal PTSR, and a beam reference signal BRS.
  • CSI-RS channel state information reference signal
  • DMRS demodulation reference signal
  • SRS sounding reference signal
  • PTSR phase tracking reference signal
  • BRS beam reference signal
  • the transmission unit 520 may be implemented by a transceiver, and the determining unit 510 may be implemented by a processor.
  • communication device 600 can include a processor 610, a transceiver 620, and a memory 630.
  • the transceiver 620 may include a receiver 621 and a transmitter 622.
  • the memory 630 may be used to store related information of resource information of at least one time domain resource unit that transmits the reference signal, and may also be used by the storage processor 610. Code, etc.
  • the various components in communication device 600 are coupled together by a bus system 660, which in addition to the data bus includes a power bus, a control bus, a status signal bus, and the like.
  • the processor 610 is configured to: determine at least one time domain resource unit for transmitting a reference signal
  • the transceiver 620 is configured to transmit the reference signal on the at least one time domain resource unit determined by the processor 610.
  • the reference signals can be acquired in time, the delay of performing data demodulation or CSI measurement is reduced, and the rate matching resources are also lowered. Control signaling overhead and complexity of rate matching.
  • the at least one time domain resource unit is not used to transmit control information and/or data.
  • the communication device is a terminal device
  • the transceiver 620 is further configured to: receive resource information that is sent by the network device and is carried in the high layer signaling, or the resource information that is carried in the downlink control information DCI. And wherein the resource information includes a location of the at least one time domain resource unit, and/or a number of the at least one time domain resource unit.
  • the communication device is a network device
  • the transceiver 620 is further configured to: after determining the resource information of the at least one time domain resource unit, send the resource information carried in the high layer signaling to the terminal device. Or the resource information carried in the DCI, the resource information including a location of the at least one time domain resource unit, and/or a number of the at least one time domain resource unit.
  • the time slot or subframe to which the at least one time domain resource unit belongs is also used to transmit control information and/or data.
  • the processor 610 is specifically configured to: determine, according to a location of a time domain resource unit used to transmit the control information, and/or a location of a time domain resource unit used to transmit the data, The location of a time domain resource unit.
  • the at least one time domain resource unit is located before the time domain resource unit for transmitting the control information; or the at least one time domain resource unit is located before the time domain resource unit for transmitting the data; Or the at least one time domain resource unit is located after the time domain resource unit for transmitting the control information, and is located before the time domain resource unit for transmitting the data; or the at least one time domain resource unit is located at a location The time slot or the starting position of the subframe.
  • the length of each time domain resource unit in the at least one time domain resource unit is determined according to a subcarrier spacing used to transmit the data.
  • the subcarrier spacing used to transmit the reference signal is not the same as the subcarrier spacing used to transmit the data.
  • the at least one time domain resource unit is configured to transmit multiple types of reference signals, and Different types of reference signals respectively have different transmission parameters, and the transmission parameters include at least one of: a subcarrier spacing for transmitting a reference signal, a transmission bandwidth for transmitting a reference signal, and a reference signal for A precoded precoding matrix and beam parameters for beamforming the reference signal.
  • the time domain resource unit is an orthogonal frequency division multiplexing OFDM symbol.
  • the reference signal is at least one of the following types: a channel state information reference signal CSI-RS, a demodulation reference signal DMRS, a sounding reference signal SRS, a phase tracking reference signal PTSR, and a beam reference signal BRS.
  • CSI-RS channel state information reference signal
  • DMRS demodulation reference signal
  • SRS sounding reference signal
  • PTSR phase tracking reference signal
  • BRS beam reference signal
  • FIG. 7 is a schematic structural diagram of a system chip according to an embodiment of the present invention.
  • the system chip 700 of FIG. 7 includes an input interface 701, an output interface 702, at least one processor 703, and a memory 704.
  • the input interface 701, the output interface 702, the processor 703, and the memory 704 are connected by a bus 707.
  • the processor 703 is configured to execute code in the memory 704, and when the code is executed, the processor 703 can implement the method performed by the terminal device or the network device in FIGS. 2 to 5.
  • the bus 707 is only one example of the connection mode.
  • the input interface 701, the output interface 702, the processor 703, and the memory 704 may be connected by other means, which is not limited herein. .
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division, and may be implemented in actual implementation.
  • multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory ROM, a random access memory RAM, a magnetic disk, or an optical disk, and the like, which can store program codes.

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Abstract

本发明公开了一种传输参考信号的方法和通信设备，该方法可以有由终端设备或网络设备执行，包括：确定用于传输参考信号的至少一个时域资源单元；在所述至少一个时域资源单元上，传输所述参考信号。这样，由于参考信号不是复用传输数据的时域资源单元上的部分子载波进行传输，而是通过特定的该至少一个时域资源单元进行传输，降低了参考信号传输的时延，从而降低了基于该参考信号进行的数据解调或CSI测量的时延，同时还降低了用于指示速率匹配资源的控制信令开销和进行速率匹配的复杂度。

Description

传输参考信号的方法和通信设备 技术领域
本发明实施例涉及无线通信领域，并且更具体地，涉及一种传输上行数据的方法和通信设备。
背景技术
在长期演进(Long Term Evolution，简称“LTE”)系统中，下行参考信号和下行数据通常采用频分多路复用(Frequency Division Multiplexing，简称“FDM”)，参考信号会在用于传输数据的符号的部分子载波上传输。这样，终端设备要接收多个正交频分复用(Orthogonal Frequency Division Multiplexing，简称“OFDM”)符号后才能检测到该参考信号，从而基于该参考信号进行的数据解调或信道状态信息(Channel State Information，简称“CSI”)测量会有较大的时延。
发明内容
本发明实施例提供了一种传输参考信号的方法和通信设备，能够减少参考信号传输带来的时延。
第一方面，提供了一种传输参考信号的方法，该方法可以有由终端设备或网络设备执行，其特征在于，包括：确定用于传输参考信号的至少一个时域资源单元；在所述至少一个时域资源单元上，传输所述参考信号。
这样，由于参考信号不是复用传输数据的时域资源单元上的部分子载波进行传输，而是通过特定的该至少一个时域资源单元进行传输，降低了参考信号传输的时延，从而降低了基于该参考信号进行的数据解调或CSI测量的时延，同时还降低了用于指示速率匹配资源的控制信令开销和进行速率匹配的复杂度。
可选地，在第一方面的一种实现方式中，所述至少一个时域资源单元不用于传输控制信息和/或数据。
应理解，如果不同参考信号的传输周期不同，则在某些时刻，一个时隙或子帧中可能只有一种类型的参考信号，在另一些时刻中可能有多种类型的参考信号。如果在一个时隙或者子帧中用于传输参考信号的至少一个时域传 输单元中只有一种类型的类型的导频信号比如DMRS，则预留的用于传输其他类型的参考信号的资源上也不能用于传输数据和/或控制信息，可以用于传输其他终端设备的其他类型的参考信号。
还应理解，该实施例中，所述方法可以由终端设备执行，则在所述至少一个时域资源单元上传输参考信号的终端设备，不在该至少一个时域资源单元上传输该终端设备的控制信息和/或数据。
所述方法还可以由网络设备执行，这时，该至少一个时域资源单元不用于传输控制信息和/或数据，而只用于传输参考信号；或者，网络设备也可以在该至少一个时域资源单元上与某个终端设备之间传输该终端设备的参考信号，并在该至少一个时域资源单元中不传输该终端设备的参考信号的资源位置上，与其他终端设备之间进行控制信息和/或数据的传输。
可选地，在第一方面的一种实现方式中，所述方法由终端设备执行，所述确定所述至少一个时域资源单元的资源信息，包括：所述终端设备接收网络设备发送的承载在高层信令中的资源信息，或承载在下行控制信息DCI中的所述资源信息，其中，所述资源信息包括所述至少一个时域资源单元的位置，和/或所述至少一个时域资源单元的数目。
可选地，在第一方面的一种实现方式中，所述方法由网络设备执行，在所述确定所述至少一个时域资源单元的资源信息之后，所述方法还包括：所述网络设备向终端设备发送承载在高层信令中的资源信息，或承载在DCI中的所述资源信息，所述资源信息包括所述至少一个时域资源单元的位置，和/或所述至少一个时域资源单元的数目。
例如，网络设备可以通过广播的方式，在广播信息中携带该至少一个时域资源单元的资源信息；或者在传输该参考信号的时隙中，利用前N个用于传输控制信息的OFDM符号中发送的DCI，来指示该至少一个时域资源单元的资源信息。
可选地，该至少一个时域资源单元也可以是终端设备与网络设备之间预先约定好的。
可选地，在第一方面的一种实现方式中，所述至少一个时域资源单元所属的时隙或子帧，还用于传输控制信息和/或数据。
可选地，在第一方面的一种实现方式中，所述确定用于传输参考信号的至少一个时域资源单元，包括：根据用于传输所述控制信息的时域资源单元 的位置，和/或用于传输所述数据的时域资源单元的位置，确定所述至少一个时域资源单元的位置。
例如，用于传输该参考信号的至少一个时域资源单元，可以是位于该控制信息占用的时域资源单元之后的N个时域资源单元，即N为传输该参考信号的至少一个时域资源单元的数目，N的值可以采用前述任意一种方法来确定，例如通过网络设备发送承载在高层信令或DCI上的至少一个时域资源单元的数目。当然，如果该参考信号所属的时隙或子帧中没有用于传输控制信息的时域资源单元，则传输该参考信号的至少一个时域单元为该时隙或该子帧中的前N个时域资源单元。
可选地，在第一方面的一种实现方式中，所述至少一个时域资源单元位于用于传输所述控制信息的时域资源单元之前；或者所述至少一个时域资源单元位于用于传输所述数据的时域资源单元之前；或者所述至少一个时域资源单元位于用于传输所述控制信息的时域资源单元之后，且位于用于传输所述数据的时域资源单元之前；或者所述至少一个时域资源单元位于所属的所述时隙或所述子帧的起始位置。
这样，可以在进行数据解调等数据处理过程之前，尽早地接收到参考信号，避免了参考信号传输带来的时延。
可选地，在第一方面的一种实现方式中，所述至少一个时域资源单元中每个时域资源单元的长度，是根据用于传输所述数据的子载波间隔确定的。
可选地，在第一方面的一种实现方式中，用于传输所述参考信号的子载波间隔与用于传输所述数据的子载波间隔不相同。
可选地，在第一方面的一种实现方式中，所述至少一个时域资源单元用于传输多种类型的参考信号，且不同类型的参考信号对应的传输参数各不相同，所述传输参数包括以下中的至少一种：用于传输参考信号的子载波间隔、用于传输参考信号的传输带宽、用于对参考信号进行预编码的预编码矩阵、和用于对参考信号进行波束赋形的波束参数。
具体地说，终端设备和网络设备可以在该至少一个时域资源单元中传输多种类型的参考信号，且可以使用不同的子载波间隔传输不同类型的参考信号。终端设备和网络设备也可以使用不同的传输带宽来传输不同类型的参考信号。终端设备和网络设备还可以使用不同的预编码矩阵对不同类型的参考信号进行预编码，或者使用不同的波束对不同类型参考信号进行波束赋形。
可选地，在第一方面的一种实现方式中，该至少一个时域资源单元用于传输多种类型的参考信号，且不同类型的参考信号采用时分复用TDM或者频分复用FDM的方式进行传输。
可选地，在第一方面的一种实现方式中，所述时域资源单元为正交频分复用OFDM符号。
可选地，在第一方面的一种实现方式中，所述参考信号为以下类型中的至少一种：信道状态信息参考信号CSI-RS、解调参考信号DMRS、探测参考信号SRS、相位跟踪参考信号PTSR和波束参考信号BRS。
第二方面，提供了一种通信设备，该通信设备可以用于执行前述第一方面及各种实现方式中的传输参考信号的方法中由终端设备或网络设备执行的的各个过程。该通信设备包括：确定单元，用于确定用于传输参考信号的至少一个时域资源单元；传输单元，用于在所述确定单元确定的所述至少一个时域资源单元上，传输所述参考信号。
第三方面，提供了一种通信设备，该通信设备可以用于执行前述第一方面及各种实现方式中的传输参考信号的方法中由终端设备或网络设备执行的各个过程。该通信设备包括处理器和收发信机。所述处理器用于确定用于传输参考信号的至少一个时域资源单元；所述收发信机用于在所述处理器确定的所述至少一个时域资源单元上，传输所述参考信号。
第四方面，提供了一种计算机可读存储介质，所述计算机可读存储介质存储有程序，所述程序使得终端设备或网络设备执行上述第一方面，及其各种实现方式中的任一种传输参考信号的方法。
基于本发明实施例的传输参考信号的方法，通过将参考信号都放到靠前的特定的OFDM符号中进行传输，从而可以降低参考信号传输带来的时延，降低进行数据解调或者CSI测量的时延，同时也可以降低用于指示速率匹配资源的控制信令开销和进行速率匹配的复杂度。
附图说明
图1是本发明实施例的一种应用场景的示意性架构图。
图2是本发明实施例的传输参考信号的方法的流程交互图。
图3是本发明实施例的传输参考信号的方法的流程交互图。
图4(a)是本发明实施例的传输参考信号的时域资源单元的示意图。
图4(b)是本发明实施例的传输参考信号的时域资源单元的示意图。
图4(c)是本发明实施例的传输参考信号的时域资源单元的示意图。
图4(d)是本发明实施例的传输参考信号的时域资源单元的示意图。
图4(e)是本发明实施例的传输参考信号的时域资源单元的示意图。
图5是本发明实施例的通信设备的结构框图。
图6是本发明实施例的通信设备的结构框图。
图7是本发明实施例的系统芯片的示意性结构图。
具体实施方式
下面将结合附图，对本发明实施例中的技术方案进行描述。
应理解，本发明实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile Communication，简称“GSM”)系统、码分多址(Code Division Multiple Access，简称“CDMA”)系统、宽带码分多址(Wideband Code Division Multiple Access，简称“WCDMA”)系统、长期演进(Long Term Evolution，简称“LTE”)系统、LTE频分双工(Frequency Division Duplex，简称“FDD”)系统、LTE时分双工(Time Division Duplex，简称“TDD”)、通用移动通信系统(Universal Mobile Telecommunication System，简称“UMTS”)、以及未来的5G通信系统等。
本发明结合终端设备描述了各个实施例。终端设备也可以指用户设备(User Equipment，简称“UE”)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，简称“SIP”)电话、无线本地环路(Wireless Local Loop，简称“WLL”)站、个人数字处理(Personal Digital Assistant，简称“PDA”)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络中的终端设备或者未来演进的PLMN网络中的终端设备等。
本发明结合网络设备描述了各个实施例。网络设备可以是用于与终端设备进行通信的设备，例如，可以是GSM系统或CDMA中的基站(Base Transceiver Station，简称“BTS”)，也可以是WCDMA系统中的基站(NodeB， 简称“NB”)，还可以是LTE系统中的演进型基站(Evolutional Node B，简称“eNB”或“eNodeB”)，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络侧设备或未来演进的PLMN网络中的网络设备等。
本发明实施例中，参考信号也被称为导频信号。
图1是本发明一个应用场景的示意图。图1中的通信系统可以包括网络设备10和终端设备20。网络设备10用于为终端设备20提供通信服务并接入核心网，终端设备20通过搜索网络设备10发送的同步信号、广播信号等而接入网络，从而进行与网络的通信。图1中所示出的箭头可以表示通过终端设备20与网络设备10之间的蜂窝链路进行的上/下行传输。
本发明实施例中的网络可以是指公共陆地移动网络(Public Land Mobile Network，简称“PLMN”)或者设备对设备(Device to Device，简称“D2D”)网络或者机器对机器/人(Machine to Machine/Man，简称“M2M”)网络或者其他网络，图1只是举例的简化示意图，网络中还可以包括其他终端设备，图1中未予以画出。
图2是根据本发明实施例的传输参考信号的方法的流程交互图。图2示出了网络设备和终端设备，该网络设备例如可以为图1中所示的网络设备10，该终端设备例如可以为图1中所示的终端设备20。本发明实施例中，参考信号均是在特定的正交频分多路复用(Orthogonal Frequency Division Multiplexing，简称“OFDM”)符号中复用传输，该特定的OFDM符号为专门用于传输参考信号的OFDM符号，从而能够及时地接收参考信号，以降低基于该参考信号进行的数据解调或CSI测量的时延，同时还可以降低用于指示速率匹配(rate-matching)资源的控制信令开销和进行速率匹配的复杂度。如图2所示，该传输参考信号的具体流程包括：
210，网络设备确定用于传输参考信号的至少一个时域资源单元。
具体地说，网络设备在与终端设备进行参考信号的传输之前，会确定用于传输该参考信号的至少一个时域资源单元，并在该至少一个时域资源单元上向终端设备发送该参考信号，或者在该至少一个时域资源单元上接收终端设备发送的参考信号。
220，终端设备确定用于传输参考信号的至少一个时域资源单元。
同样，终端设备在与网络设备进行参考信号的传输之前，也会确定用于传输该参考信号的至少一个时域资源单元，并在该至少一个时域资源单元上接收网络设备发送的该参考信号或者向网络设备发送该参考信号。
其中，该至少一个时域资源单元为用于传输参考信号的时域资源单元，可以用于传输至少一种类型的参考信号。也就是说，该至少一个时域资源单元可以用于传输该参考信号，也可以用于传输除该参考信号之外的其他类型的参考信号。
相比之下，由于参考信号不是复用传输数据的时域资源单元上的部分子载波进行传输，而是通过特定的该至少一个时域资源单元进行传输，降低了参考信号传输的时延，从而降低了基于该参考信号进行的数据解调或CSI测量的时延，同时还降低了用于指示速率匹配资源的控制信令开销和进行速率匹配的复杂度。
其中，所述参考信号可以是该终端设备自己的参考信号，也可以是其他终端设备的参考信号。因此，所述至少一个时域资源单元可以包括该终端设备用于传输参考信号的时域资源单元，也可以包括预留给其他终端设备用于传输参考信号的时域资源单元。
可选地，该时域资源单元为正交频分复用OFDM符号。
应理解，该时域资源单元还可以为迷你时隙(mini-slot)、时隙(slot)或者5G系统中定义的其他时域资源单位，本发明对此不做任何限定。
可选地，本发明实施例中的参考信号，可以包括以下中的至少一种：信道状态信息参考信号(Channel State Information Reference Signal，简称“CSI-RS”)、解调参考信号(De Modulation Reference Signal，简称“DMRS”)、探测参考信号(Sounding Reference Signal，简称“SRS”)、相位跟踪参考信号(Phase Tracking Reference Signal，简称“PTSR”)和波束参考信号(Beam-specific Reference Signal，简称“BRS”)。
还应理解，本发明实施例中，参考信号的传输，可以是终端设备向网络设备发送参考信号即上行参考信号的传输，也可以是网络设备向终端设备发送参考信号即下行参考信号的传输。
可选地，用于传输参考信号的至少一个时域资源单元不用于传输控制信息和/或数据。
应理解，该实施例中，所述方法可以由终端设备执行，则在所述至少一 个时域资源单元上传输参考信号的终端设备，不在该至少一个时域资源单元上传输该终端设备的控制信息和/或数据。
所述方法还可以由网络设备执行，这时，该至少一个时域资源单元不用于传输控制信息和/或数据，而只用于传输参考信号；或者，网络设备也可以在该至少一个时域资源单元上与某个终端设备之间传输该终端设备的参考信号，并在该至少一个时域资源单元中不传输该终端设备的参考信号的资源位置上，与其他终端设备之间进行控制信息和/或数据的传输。
举例来说，该终端设备假设该时域资源单元内的所有物理资源不用于传输数据。终端设备在进行数据的资源映射时，需要对该至少一个时域资源单元内的所有物理资源进行速率匹配。例如，如果用于传输参考信号的时域资源单元为一个时隙中的第3个OFDM符号，且前两个OFDM符号用于传输控制信息，则数据只能从第4个OFDM符号上开始进行资源映射。
该终端设备也可以假设该时域资源单元内的所有物理资源不用于传输控制信息。网络设备在进行控制信息的物理资源分配时，不能为终端设备配置该至少一个时域资源单元用于终端设备传输控制信息。例如，用于传输参考信号的时域资源单元包括1个OFDM符号，传输该控制信息需要使用2个OFDM符号，则参考信号可以在一个时隙的第一个OFDM符号传输，而控制信息在该时隙的第2个OFDM符号和第3个OFDM符号传输；或者控制信息可以在一个时隙的第1个OFDM符号和第2个OFDM符号传输，参考信号在该时隙的第3个OFDM符号传输。
如果不同参考信号的传输周期不同，则在某些时刻，一个时隙或子帧中可能只有一种类型的参考信号，在另一些时刻中可能有多种类型的参考信号。如果在一个时隙或者子帧中用于传输参考信号的至少一个时域传输单元中只有一种类型的导频信号比如DMRS，则预留的用于传输其他类型的参考信号的资源上也不能用于传输数据和/或控制信息，可以用于传输其他终端设备的其他类型的参考信号。
在210和220中，该至少一个时域资源单元可以是终端设备与网络设备之间预先约定好的。终端设备与网络设备可以直接在约定好的至少一个时域资源单元上进行参考信号的传输。例如，可以在协议中约定，一个时隙上如果需要传输控制信息，该时隙的第三个OFDM符号用于传输参考信号，否则该时隙中的第一个OFDM符号用于传输参考信号。
用于传输参考信号的该至少一个时域资源单元也可以是网络设备确定并通知终端设备的。网络设备可以自行确定该至少一个时域资源单元，将配置好的该至少一个时域资源单元的资源信息发送给终端设备，从而终端设备可以从接收到的该资源信息获取用于传输参考信号的该至少一个时域资源单元。
例如图3所示的本发明实施例的传输参考信号的方法，终端设备可以通过接收网络设备发送的该至少一个时域资源单元的资源信息，来确定该至少一个时域资源单元的位置和/或数目。即在220之前该方法可以括221和222，且220可以由223代替。
221，网络设备向终端设备发送该至少一个时域资源单元的资源信息。
其中，该资源信息包括该至少一个时域资源单元的位置，和/或该至少一个资源单元的数目。
222，终端设备接收网络设备发送的该资源信息。
223，终端设备根据该资源信息，确定用于传输参考信号的该至少一个时域资源单元。
可选地，网络设备可以向终端设备发送承载在高层信令中的该资源信息，从而终端设备接收网络设备发送的承载在高层信令中的资源信息后，可以根据该高层信令确定用于传输参考信号的至少一个时域资源单元。例如网络设备可以通过广播的方式，在广播信息中携带该至少一个时域资源单元的资源信息。
可选地，网络设备可以向终端设备发送承载在下行控制信息(Downlink Control Information，简称“DCI”)中的该资源信息，从而终端设备接收网络设备发送的承载在DCI中的资源信息后，可以根据该DCI确定用于传输参考信号的至少一个市域资源单元。
例如，在传输该参考信号的时隙中，利用前N个用于传输控制信息的OFDM符号中发送的DCI，来指示该至少一个时域资源单元的资源信息。
可选地，该至少一个时域资源单元所属的时隙或子帧，还用于传输控制信息和/或数据。
例如，终端设备可以在该至少一个时域资源单元所属的时隙或子帧中的其他时域资源单元上，传输该终端设备的控制信息和/或数据，网络设备也可以在该至少一个时域资源单元所属的时隙或子帧中的其他时域资源单元上， 与该终端设备或其他终端设备之间进行控制信息和/或数据的传输。假设该至少一个时域资源单元在其所属的时隙中占用的OFDM符号为第3个OFDM符号，那么该时隙的第1个OFDM符号和第2个OFDM符号可以用于传输控制信息，该时隙的第4个OFDM符号至第7个OFDM符号可以用于传输数据。
这时，终端设备或网络设备还可以根据其所属的时隙或子帧上用于传输该控制信息的时域资源单元的位置，和/或用于传输该数据的时域资源单元的位置，确定用于传输参考信号的至少一个时域资源单元的位置。
具体地说，用于传输该参考信号的至少一个时域资源单元，可以是位于该控制信息占用的时域资源单元之后的N个时域资源单元，即N为传输该参考信号的至少一个时域资源单元的数目，N的值可以采用前述任意一种方法来确定，例如通过网络设备发送承载在高层信令或DCI上的至少一个时域资源单元的数目。当然，如果该参考信号所属的该时隙或该子帧中没有用于传输控制信息的时域资源单元，则传输该参考信号的至少一个时域单元为该时隙或该子帧中的前N个时域资源单元。
举例来说，假设传输控制信息占用了一个时隙的第1个OFDM符号和第2个OFDM符号，且终端设备通过接收网络设备发送的高层信令，或者接收网络设备在前两个OFDM符号上发送的DCI，确定用于传输该参考信号的OFDM符号数为2，则终端设备可以在该时隙的第3和4个OFDM符号上传输参考信号。
若该至少一个时域资源单元所属的时隙或子帧，还用于传输控制信息和/或数据，那么传输参考信号的至少一个时域资源单元在该时隙或该子帧的位置，可以位于用于传输该控制信息的时域资源单元之前；或者该至少一个时域资源单元位于用于传输该数据的时域资源单元之前；或者该至少一个时域资源单元位于用于传输该控制信息的时域资源单元之后，且位于用于传输该数据的时域资源单元之前；或者该至少一个时域资源单元位于所属的该时隙或该子帧的起始位置。
这样，终端设备和网络设备可以在进行数据解调等数据处理过程之前，接收到参考信号，避免了参考信号传输带来的时延。
可选地，该至少一个时域资源单元中的每个时域资源单元的长度，可以是根据该参考信号所属的时隙或子帧中用于传输数据的子载波间隔确定的。 即每个时域资源单元的长度是基于与该参考信号在同一个时隙或者同一个子帧传输的数据所用的子载波间隔确定的。
具体的，子载波间隔和一个时域资源单元的长度的对应关系可以由网络侧与终端设备预先约定好，或者终端设备也可以根据子载波间隔直接计算出所述一个时域资源单元的长度。
进一步地，用于传输该参考信号的子载波间隔，与用于传输该数据的子载波间隔可以相同，也可以不相同。例如，该时隙或子帧中传输数据采用15kHz的子载波间隔，而传输参考信号可以采用60kHz的子载波间隔。在这种情况下，假设采用15kHz的子载波间隔确定的一个时域资源单元的长度为A，而采用60kHz的子载波间隔确定的一个时域资源单元的长度为A/4，即采用数据的子载波间隔确定的一个时域资源单元可以传输四个时域资源单元的参考信号。这种情况下，这四个时域资源单元可以用于不同类型的参考信号进行时分复用TDM传输。
可选地，该至少一个时域资源单元可以用于传输多种类型的参考信号，且不同类型的参考信号对应的传输参数各不相同，该传输参数包括以下中的至少一种：用于传输参考信号的子载波间隔、用于传输参考信号的传输带宽、用于对参考信号进行预编码的预编码矩阵、和用于对参考信号进行波束赋形的波束参数。
具体地说，终端设备和网络设备可以在该至少一个时域资源单元中传输多种类型的参考信号，且可以使用不同的子载波间隔传输不同类型的参考信号。不同类型的导频信号的子载波间隔可以由网络设备进行配置。例如，终端在一个OFDM符号中传输CSI-RS和DMRS，其中CSI-RS采用60kHz的子载波间隔，DMRS采用30kHz的子载波间隔。
终端设备和网络设备也可以使用不同的传输带宽来传输不同类型的参考信号。例如DMRS的传输一般采用与其所属的时隙或子帧中该终端设备传输数据相同的传输带宽，用于数据解调；而SRS、PTS、CSI-RS和BRS等其他参考信号一般采用网络设备通过下行信令专门配置的传输带宽。
终端设备和网络设备还可以使用不同的预编码矩阵对不同类型的参考信号进行预编码，或者使用不同的波束对不同类型参考信号进行波束赋形。例如传输DMRS使用的预编码矩阵，一般为该终端设备在该DMRS所属的子帧或时隙中传输数据所使用的预编码矩阵，或者该终端设备对该DMRS 采用与该数据相同的波束进行赋形，用于数据解调；而对于SRS、PTS、CSI-RS和BRS等其他参考信号，可以采用与该终端设备传输的该数据不同的波束进行赋形，且一般不进行数字域的预编码(即采用单位阵作为预编码矩阵)。
可选地，该至少一个时域资源单元用于传输多种类型的参考信号，且不同类型的参考信号采用时分复用TDM或者频分复用FDM的方式进行传输。
具体地说，若该至少一个时域资源单元上需要传输多种类型的参考信号，则多个参考信号在该至少一个市域资源单元中所占用的时域资源和/或频域资源不同。例如图4(a)所示，当前时隙中，用于传输参考信号的该至少一个时域资源单元包括1个OFDM符号，该OFDM符号位于传输下行数据的时域资源单元之前，且终端设备在该OFDM符号中可以同时传输两种参考信号即CSI-RS和DMRS，其中CSI-RS和DMRS占用该OFDM符号中的不同子载波。又例如图4(b)所示，该OFDM符号位于传输控制信息的时域资源单元之后且位于传输下行数据的时域资源单元之前，终端设备而在当前时隙中采用15kHz的子载波间隔来传输数据，在该OFDM符号中采用TDM的方式传输SRS和DMRS，其中DMRS和SRS均采用30kHz的子载波间隔，分别占用半个OFDM符号。又例如图4(c)所示，终端设备在当前时隙中采用15kHz的子载波间隔来传输数据，且在该OFDM符号中采用TDM的方式传输CSI-RS和DMRS，其中DMRS采用30kHz的子载波间隔，CSI-RS采用60kHz的载波间隔，CSI-RS和DMRS分别占用半个OFDM符号，在CSI-RS占用的半个OFDM符号中可以传输2个CSI-RS子符号。
又例如，当该OFDM符号上需要传输三种参考信号例如CSI-RS、DMRS和PTRS时，可以通过TDM和FDM的方式进行传输，如图4(d)所示，在该OFDM符号中采用TDM的方式传输CSI-RS和DMRS，CSI-RS和DMRS分别占用半个OFDM符号，在CSI-RS占用的半个OFDM符号中可以传输2个CSI-RS子符号，并且在用于传输CSI-RS的半个OFDM符号中，CSI-RS和PTRS占用该半个OFDM符号中的不同子载波。
又例如，对于上行参考信号例如SRS和DMRS，同样可以通过上述方式进行传输，如图4(e)所示，进行SRS和DMRS的传输，终端设备在当前时隙中采用15kHz的子载波间隔来传输数据，且在该OFDM符号中采用TDM的方式传输SRS和DMRS，其中DMRS采用30kHz的子载波间隔，SRS采用60kHz的载波间隔，SRS和DMRS分别占用半个OFDM符号，在 SRS占用的半个OFDM符号中可以传输2个SRS子符号。
基于上面的描述，在210和220中终端设备和网络设备确定了参考信号资源后，两者之间就可以在该至少一个时域资源单元上进行参考信号的传输。若该参考信号为下行参考信号例如信道状态信息参考信号CSI-RS、小区特定参考信号CRS和解调参考信号DMRS等，则执行230和240；若该参考信号为上行参考信号例如探测参考信号SRS、上行DMRS等，则执行250和260。
230，网络设备在至少一个时域资源单元上向终端设备发送参考信号。
240，终端设备在该至少一个时域资源单元上接收该参考信号。
250，终端设备在该至少一个时域资源单元上向网络设备发送参考信号。
260，网络设备在该至少一个时域资源单元上接收该参考信号。
因此，本发明实施例的传输参考信号的方法，将参考信号都放到靠前的特定的OFDM符号中进行传输，从而可以及时获取参考信号，降低进行数据解调或者CSI测量的时延，同时也会降低用于指示速率匹配资源的控制信令开销和进行速率匹配的复杂度。
图5示出了本发明实施例的通信设备500的示意性框图。如图5所示，该终端设备500包括确定单元510和传输单元520。
确定单元510，用于确定用于传输参考信号的至少一个时域资源单元；
传输单元520，用于在所述确定单元510确定的所述至少一个时域资源单元上，传输所述参考信号。
本发明实施例中，通过将参考信号都放到靠前的特定的OFDM符号中进行传输，从而可以及时获取参考信号，降低进行数据解调或者CSI测量的时延，同时也会降低用于指示速率匹配资源的控制信令开销和进行速率匹配的复杂度。
可选地，所述至少一个时域资源单元不用于传输控制信息和/或数据。
可选地，所述通信设备为终端设备，所述传输单元520还用于：接收网络设备发送的承载在高层信令中的资源信息，或承载在下行控制信息DCI中的所述资源信息，其中，所述资源信息包括所述至少一个时域资源单元的位置，和/或所述至少一个时域资源单元的数目。
可选地，所述通信设备为网络设备，所述传输单元520还用于：在确定所述至少一个时域资源单元的资源信息之后，向终端设备发送承载在高层信 令中的资源信息，或承载在DCI中的所述资源信息，所述资源信息包括所述至少一个时域资源单元的位置，和/或所述至少一个时域资源单元的数目。
可选地，所述至少一个时域资源单元所属的时隙或子帧，还用于传输控制信息和/或数据。
可选地，所述确定单元510具体用于：根据用于传输所述控制信息的时域资源单元的位置，确定所述至少一个时域资源单元的位置。
可选地，所述至少一个时域资源单元位于用于传输所述控制信息的时域资源单元之前；或者所述至少一个时域资源单元位于用于传输所述数据的时域资源单元之前；或者所述至少一个时域资源单元位于用于传输所述控制信息的时域资源单元之后，且位于用于传输所述数据的时域资源单元之前；或者所述至少一个时域资源单元位于所属的所述时隙或所述子帧的起始位置。
可选地，所述至少一个时域资源单元中每个时域资源单元的长度，是根据用于传输所述数据的子载波间隔确定的。
可选地，用于传输所述参考信号的子载波间隔与用于传输所述数据的子载波间隔不相同。
可选地，所述至少一个时域资源单元用于传输多种类型的参考信号，且不同类型的参考信号对应的传输参数各不相同，所述传输参数包括以下中的至少一种：用于传输参考信号的子载波间隔、用于传输参考信号的传输带宽、用于对参考信号进行预编码的预编码矩阵、和用于对参考信号进行波束赋形的波束参数。
可选地，所述时域资源单元为正交频分复用OFDM符号。
可选地，所述参考信号为以下类型中的至少一种：信道状态信息参考信号CSI-RS、解调参考信号DMRS、探测参考信号SRS、相位跟踪参考信号PTSR和波束参考信号BRS。
应注意，本发明实施例中，传输单元520可以由收发信机实现，确定单元510可以由处理器实现。如图6所示，通信设备600可以包括处理器610、收发信机620和存储器630。其中，收发信机620可以包括接收器621和发送器622，存储器630可以用于存储传输参考信号的至少一个时域资源单元的资源信息等的相关信息，还可以用于存储处理器610执行的代码等。通信设备600中的各个组件通过总线系统660耦合在一起，其中总线系统660除包括数据总线之外，还包括电源总线、控制总线和状态信号总线等。
其中，处理器610用于：确定用于传输参考信号的至少一个时域资源单元；
收发信机620用于，在处理器610确定的所述至少一个时域资源单元上，传输所述参考信号。
这样，通过将参考信号都放到靠前的特定的OFDM符号中进行传输，从而可以及时获取参考信号，降低进行数据解调或者CSI测量的时延，同时也会降低用于指示速率匹配资源的控制信令开销和进行速率匹配的复杂度。
可选地，所述至少一个时域资源单元不用于传输控制信息和/或数据。
可选地，所述通信设备为终端设备，所述收发信机620还用于：接收网络设备发送的承载在高层信令中的资源信息，或承载在下行控制信息DCI中的所述资源信息，其中，所述资源信息包括所述至少一个时域资源单元的位置，和/或所述至少一个时域资源单元的数目。
可选地，所述通信设备为网络设备，所述收发信机620还用于：在确定所述至少一个时域资源单元的资源信息之后，向终端设备发送承载在高层信令中的资源信息，或承载在DCI中的所述资源信息，所述资源信息包括所述至少一个时域资源单元的位置，和/或所述至少一个时域资源单元的数目。
可选地，所述至少一个时域资源单元所属的时隙或子帧，还用于传输控制信息和/或数据。
可选地，所述处理器610具体用于：根据用于传输所述控制信息的时域资源单元的位置，和/或用于传输所述数据的时域资源单元的位置，确定所述至少一个时域资源单元的位置。
可选地，所述至少一个时域资源单元位于用于传输所述控制信息的时域资源单元之前；或者所述至少一个时域资源单元位于用于传输所述数据的时域资源单元之前；或者所述至少一个时域资源单元位于用于传输所述控制信息的时域资源单元之后，且位于用于传输所述数据的时域资源单元之前；或者所述至少一个时域资源单元位于所属的所述时隙或所述子帧的起始位置。
可选地，所述至少一个时域资源单元中每个时域资源单元的长度，是根据用于传输所述数据的子载波间隔确定的。
可选地，用于传输所述参考信号的子载波间隔与用于传输所述数据的子载波间隔不相同。
可选地，所述至少一个时域资源单元用于传输多种类型的参考信号，且 不同类型的参考信号对应的传输参数各不相同，所述传输参数包括以下中的至少一种：用于传输参考信号的子载波间隔、用于传输参考信号的传输带宽、用于对参考信号进行预编码的预编码矩阵、和用于对参考信号进行波束赋形的波束参数。
可选地，所述时域资源单元为正交频分复用OFDM符号。
可选地，所述参考信号为以下类型中的至少一种：信道状态信息参考信号CSI-RS、解调参考信号DMRS、探测参考信号SRS、相位跟踪参考信号PTSR和波束参考信号BRS。
图7是本发明实施例的系统芯片的一个示意性结构图。图7的系统芯片700包括输入接口701、输出接口702、至少一个处理器703、存储器704，所述输入接口701、输出接口702、所述处理器703以及存储器704之间通过总线707相连，所述处理器703用于执行所述存储器704中的代码，当所述代码被执行时，所述处理器703可以实现图2至图5中的终端设备或网络设备执行的方法。所述总线707仅为连接方式的一个示例，本发明实施例中，所述输入接口701、输出接口702、所述处理器703以及存储器704之间还可以通过其他方式进行连接，这里不做限定。
应理解，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
应理解，在本发明的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本发明实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可 以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (26)

  1. 一种传输参考信号的方法，其特征在于，所述方法包括：
    确定用于传输参考信号的至少一个时域资源单元；
    在所述至少一个时域资源单元上，传输所述参考信号。
  2. 根据权利要求1所述方法，其特征在于，所述至少一个时域资源单元不用于传输控制信息和/或数据。
  3. 根据权利要求1或2所述方法，其特征在于，所述方法由终端设备执行，所述确定所述至少一个时域资源单元的资源信息，包括：
    所述终端设备接收网络设备发送的承载在高层信令中的资源信息，或承载在下行控制信息DCI中的所述资源信息，其中，所述资源信息包括所述至少一个时域资源单元的位置，和/或所述至少一个时域资源单元的数目。
  4. 根据权利要求1或2所述方法，其特征在于，所述方法由网络设备执行，在所述确定所述至少一个时域资源单元的资源信息之后，所述方法还包括：
    所述网络设备向终端设备发送承载在高层信令中的资源信息，或承载在DCI中的所述资源信息，所述资源信息包括所述至少一个时域资源单元的位置，和/或所述至少一个时域资源单元的数目。
  5. 根据权利要求1至4中任一项所述方法，其特征在于，所述至少一个时域资源单元所属的时隙或子帧，还用于传输控制信息和/或数据。
  6. 根据权利要求5所述方法，其特征在于，所述确定用于传输参考信号的至少一个时域资源单元，包括：
    根据用于传输所述控制信息的时域资源单元的位置，和/或用于传输所述数据的时域资源单元的位置，确定所述至少一个时域资源单元的位置。
  7. 根据权利要求5或6所述的方法，其特征在于，所述至少一个时域资源单元位于用于传输所述控制信息的时域资源单元之前；或者
    所述至少一个时域资源单元位于用于传输所述数据的时域资源单元之前；或者
    所述至少一个时域资源单元位于用于传输所述控制信息的时域资源单元之后，且位于用于传输所述数据的时域资源单元之前；或者
    所述至少一个时域资源单元位于所属的所述时隙或所述子帧的起始位置。
  8. 根据权利要求5至7中任一项所述的方法，其特征在于，所述至少一个时域资源单元中每个时域资源单元的长度，是根据用于传输所述数据的子载波间隔确定的。
  9. 根据权利要求5至8中任一项所述的方法，其特征在于，用于传输所述参考信号的子载波间隔与用于传输所述数据的子载波间隔不相同。
  10. 根据权利要求1至9中任一项所述的方法，其特征在于，所述至少一个时域资源单元用于传输多种类型的参考信号，且不同类型的参考信号对应的传输参数各不相同，所述传输参数包括以下中的至少一种：
    用于传输参考信号的子载波间隔、用于传输参考信号的传输带宽、用于对参考信号进行预编码的预编码矩阵、和用于对参考信号进行波束赋形的波束参数。
  11. 根据权利要求1至10中任一项所述的方法，其特征在于，所述至少一个时域资源单元用于传输多种类型的参考信号，且不同类型的参考信号采用时分复用TDM或者频分复用FDM的方式进行传输。
  12. 根据权利要求1至11中任一项所述的方法，其特征在于，所述时域资源单元为正交频分复用OFDM符号。
  13. 根据权利要求1至12中任一项所述的方法，其特征在于，所述参考信号为以下类型中的至少一种：
    信道状态信息参考信号CSI-RS、解调参考信号DMRS、探测参考信号SRS、相位跟踪参考信号PTSR和波束参考信号BRS。
  14. 一种通信设备，其特征在于，包括：
    确定单元，用于确定用于传输参考信号的至少一个时域资源单元；
    传输单元，用于在所述确定单元确定的所述至少一个时域资源单元上，传输所述参考信号。
  15. 根据权利要求14所述的通信设备，其特征在于，所述至少一个时域资源单元不用于传输控制信息和/或数据。
  16. 根据权利要求14或15所述的通信设备，其特征在于，所述通信设备为终端设备，所述传输单元还用于：
    接收网络设备发送的承载在高层信令中的资源信息，或承载在下行控制信息DCI中的所述资源信息，其中，所述资源信息包括所述至少一个时域资源单元的位置，和/或所述至少一个时域资源单元的数目。
  17. 根据权利要求14或15所述通信设备，其特征在于，所述通信设备为网络设备，所述传输单元还用于：
    在确定所述至少一个时域资源单元的资源信息之后，向终端设备发送承载在高层信令中的资源信息，或承载在DCI中的所述资源信息，所述资源信息包括所述至少一个时域资源单元的位置，和/或所述至少一个时域资源单元的数目。
  18. 根据权利要求14至17中任一项所述的通信设备，其特征在于，所述至少一个时域资源单元所属的时隙或子帧，还用于传输控制信息和/或数据。
  19. 根据权利要求18所述的通信设备，其特征在于，所述确定单元具体用于：
    根据用于传输所述控制信息的时域资源单元的位置，和/或用于传输所述数据的时域资源单元的位置，确定所述至少一个时域资源单元的位置。
  20. 根据权利要求18或19所述的通信设备，其特征在于，所述至少一个时域资源单元位于用于传输所述控制信息的时域资源单元之前；或者
    所述至少一个时域资源单元位于用于传输所述数据的时域资源单元之前；或者
    所述至少一个时域资源单元位于用于传输所述控制信息的时域资源单元之后，且位于用于传输所述数据的时域资源单元之前；或者
    所述至少一个时域资源单元位于所属的所述时隙或所述子帧的起始位置。
  21. 根据权利要求18至20中任一项所述的通信设备，其特征在于，所述至少一个时域资源单元中每个时域资源单元的长度，是根据用于传输所述数据的子载波间隔确定的。
  22. 根据权利要求18至21中任一项所述的通信设备，其特征在于，用于传输所述参考信号的子载波间隔与用于传输所述数据的子载波间隔不相同。
  23. 根据权利要求14至22中任一项所述的通信设备，其特征在于，所述至少一个时域资源单元用于传输多种类型的参考信号，且不同类型的参考信号对应的传输参数各不相同，所述传输参数包括以下中的至少一种：
    用于传输参考信号的子载波间隔、用于传输参考信号的传输带宽、用于 对参考信号进行预编码的预编码矩阵、和用于对参考信号进行波束赋形的波束参数。
  24. 根据权利要求14至23中任一项所述的通信设备，其特征在于，所述至少一个时域资源单元用于传输多种类型的参考信号，且不同类型的参考信号采用时分复用TDM或者频分复用FDM的方式进行传输。
  25. 根据权利要求14至24中任一项所述的通信设备，其特征在于，所述时域资源单元为正交频分复用OFDM符号。
  26. 根据权利要求14至25中任一项所述的通信设备，其特征在于，所述参考信号为以下类型中的至少一种：
    信道状态信息参考信号CSI-RS、解调参考信号DMRS、探测参考信号SRS、相位跟踪参考信号PTSR和波束参考信号BRS。
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