WO2019096244A1 - 发送探测参考信号srs的方法和装置 - Google Patents

发送探测参考信号srs的方法和装置 Download PDF

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Publication number
WO2019096244A1
WO2019096244A1 PCT/CN2018/115883 CN2018115883W WO2019096244A1 WO 2019096244 A1 WO2019096244 A1 WO 2019096244A1 CN 2018115883 W CN2018115883 W CN 2018115883W WO 2019096244 A1 WO2019096244 A1 WO 2019096244A1
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Prior art keywords
srs
frequency domain
resource
bandwidth
domain resource
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PCT/CN2018/115883
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English (en)
French (fr)
Inventor
秦熠
窦圣跃
高翔
刘建琴
张闽
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to BR112020009723-3A priority Critical patent/BR112020009723A2/pt
Priority to EP18877327.9A priority patent/EP3713335B9/en
Priority to EP23196434.7A priority patent/EP4311176A3/en
Publication of WO2019096244A1 publication Critical patent/WO2019096244A1/zh
Priority to US16/875,755 priority patent/US11233609B2/en
Priority to US17/571,201 priority patent/US11824699B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/0012—Hopping in multicarrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H04L27/26136—Pilot sequence conveying additional information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals

Definitions

  • the present application relates to the field of communications, and in particular, to a method and apparatus for transmitting a sounding reference signal SRS.
  • uplink measurement of a terminal device is implemented by transmitting a sounding reference signal (SRS).
  • SRS sounding reference signal
  • the network device obtains uplink channel state information by measuring the SRS sent by the terminal device.
  • the remote terminal device since the distance of the terminal device from the network device (for example, the base station) is different, the remote terminal device may be limited in power.
  • the terminal equipment In order to ensure that the base station receives enough SRS, the terminal equipment must ensure narrowband when transmitting the SRS. At this time, in order to measure the SRS of the total bandwidth of the system, the measurement of the total bandwidth of the system can only be completed by frequency hopping.
  • the frequency hopping is performed based on the bandwidth of the cell-level configuration, that is, the hopping mode of the terminal device is determined according to the total bandwidth of the SRS measurement configured by the cell, and only the hop between the slots is supported. frequency.
  • LTE is also not supported.
  • the present application provides a method for transmitting a reference signal, which can support multiple frequency hopping modes, thereby improving the flexibility of frequency hopping.
  • the present application provides a method for transmitting a sounding reference signal SRS, the method comprising: receiving, by a terminal device, first configuration information of an SRS resource from a network device, where the first configuration information includes a repetition factor of the SRS resource, where the SRS resource The repetition factor is that the SRS resource is mapped to the same subcarrier in one time unit and is mapped to the number of consecutive at least one symbol N, N ⁇ 1 and is an integer; the terminal device determines, according to the first configuration information, that the SRS resource is At least one first frequency domain resource mapped in the first time unit; the terminal device sends the SRS to the network device in the at least one first frequency domain resource.
  • the terminal device determines, according to the first configuration information, the at least one first frequency domain resource that the SRS resource maps in the first time unit, including: the terminal device according to the first Determining, by the configuration information and the second configuration information, the at least one second frequency domain resource of the SRS resource in the first time unit, where the second frequency domain resource is part of the first frequency domain resource; and the terminal device is in the Transmitting the SRS to the network device by using the at least one first frequency domain resource, where the terminal device sends the SRS to the network device in the at least one second frequency domain resource.
  • the second configuration information is used to indicate an SRS bandwidth parameter and an SRS bandwidth location parameter, where the SRS bandwidth parameter is used to determine that the second frequency domain location is occupied by The bandwidth, the SRS bandwidth location parameter is used to determine a location of a bandwidth corresponding to the second frequency domain resource in a bandwidth corresponding to the first frequency domain resource.
  • the bandwidth corresponding to the second frequency domain resource is one of the SRS bandwidth sets configured by the user level configuration parameter C SRS .
  • the first configuration information further includes the number of symbols that the SRS resource can occupy in one time unit. A positive integer, and the terminal device determines, according to the first configuration information, the at least one first frequency domain resource that is mapped by the SRS resource in the first time unit, where the terminal device determines the SRS according to the first configuration information and the third configuration information.
  • At least one third frequency domain resource mapped by the resource in the first time unit, the at least one third frequency domain resource being a set of the at least one first frequency domain resource in the one or more of the time units And transmitting, by the terminal device, the SRS to the network device in the at least one first frequency domain resource, where the terminal device sends the SRS to the network device in the at least one third frequency domain location.
  • the third configuration information is used to indicate the number of reference symbols
  • the number of reference symbols is used to determine at least one first frequency domain resource occupied by the SRS resource in the first time unit, where Greater than the above Is a positive integer.
  • the third configuration information is used to configure at least one fourth frequency domain resource, where a bandwidth of the fourth frequency domain resource is greater than the first frequency domain resource Bandwidth, and only one of the first frequency domain resources is included in the fourth frequency domain resource.
  • the SRS resource is an aperiodic SRS resource
  • the total bandwidth to be measured is composed of K non-overlapping SRS bandwidths
  • the terminal device is at the at least one first a frequency domain resource, sending an SRS to the network device, including: Less than K ⁇ N, the terminal device transmits the SRS on each of the at least one first frequency domain resource, and does not send the SRS on a time unit other than the first time unit; or If stated More than the K ⁇ N, the terminal device transmits the SRS on the first K ⁇ N symbols of the SRS resource.
  • the first frequency domain location of the bandwidth occupied by the at least one first frequency domain resource and the first frequency domain location of the total bandwidth to be measured The frequency interval between the two is not greater than the first threshold, and/or the frequency interval between the second frequency domain location of the at least one first frequency domain resource and the second frequency domain location of the total bandwidth to be measured Not greater than a second threshold value, the first threshold value being determined according to at least one of the following parameters: The N, the total bandwidth to be measured and the user-level SRS bandwidth, and/or the second threshold are determined according to at least one of the following parameters: the K, the The N, the total bandwidth to be measured, and the user-level SRS bandwidth.
  • the first frequency domain location of the bandwidth occupied by the at least one first frequency domain resource may be the frequency domain location of the lowest or highest frequency or the center subcarrier of the bandwidth occupied by the at least one first frequency domain resource. Or, it may be other frequency domain locations adjacent to the frequency domain location of the lowest or highest or center subcarrier of the frequency.
  • the second frequency domain location of the bandwidth occupied by the at least one first frequency domain resource may be the frequency domain location of the highest or lowest or the center frequency subcarrier of the bandwidth occupied by the at least one first frequency domain resource, or It may also be other frequency domain locations that are adjacent to the frequency domain location of the highest or lowest or center subcarrier of the frequency.
  • the first frequency domain location of the total bandwidth to be measured may be the frequency domain location of the lowest or highest frequency or the center of the total bandwidth to be measured, or may be the lowest or highest or center of the frequency.
  • the subcarriers are located in other frequency domain locations adjacent to the frequency domain location.
  • the second frequency domain location of the total bandwidth to be measured may be the frequency domain location of the highest or lowest frequency or the center of the total bandwidth to be measured, or may be the highest or lowest or center of the frequency. The other frequency domain locations in the frequency domain where the carrier is located.
  • a frequency interval between third frequency domain locations of two adjacent first frequency domain resources in the at least one first frequency domain resource is not greater than a three threshold value, wherein the third threshold value is determined according to at least one of the following parameters: The N, the total bandwidth to be measured, and the user-level SRS bandwidth.
  • the third frequency domain location may be any one of the frequency domain locations occupied by the first frequency domain resource.
  • the frequency domain location where the lowest frequency subcarrier is located the frequency domain location where the highest frequency subcarrier is located, the frequency domain location where the subcarrier of the center frequency is located, or the frequency domain location where any subcarrier is located.
  • the frequency domain location where the subcarriers of the lowest frequency are located as an example, that is, the frequency interval between the frequency domain locations where the subcarriers of the lowest frequency of the adjacent two first frequency domain resources are located is not greater than the third threshold.
  • the start symbol of the SRS resource in one time unit, and the number of symbols occupied by the SRS resource in one time unit is jointly encoded.
  • the SRS resource is a non-periodic SRS resource
  • the method further includes: if K is not equal The terminal device does not send the SRS on the SRS resource in the first time unit; or, if K is greater than The terminal device does not send the SRS on the SRS resource in the first time unit; or, if K is smaller than Then, the terminal device does not send the SRS on the SRS resource in the first time unit.
  • the value of the repetition factor of the SRS resource includes 1, 2, and 4.
  • the first time unit is a time slot, a subframe, a mini-slot, or a transmission time interval TTI.
  • the present application provides a method for receiving a sounding reference signal SRS, the method comprising: the network device transmitting first configuration information of the SRS resource to the terminal device, where the first configuration information includes a repetition factor of the SRS resource, where the SRS resource The repetition factor is that the SRS resource is mapped to the same subcarrier in one time unit and is mapped to the number of consecutive at least one symbol N, N ⁇ 1 and is an integer; the network device receiving terminal device is in at least one first frequency domain The SRS sent by the resource, where the at least one first frequency domain resource is a frequency domain resource of the transmitted SRS determined by the terminal device according to the first configuration information.
  • the method further includes: the network device sending the second configuration information to the terminal device, so that the terminal device determines, according to the first configuration information and the second configuration information, the at least one a second frequency domain resource, the second frequency domain resource is a part of the bandwidth of the first frequency domain resource; and the network device receives the SRS sent by the terminal device in the at least one first frequency domain resource, where the network device receives the terminal device in the The SRS transmitted by at least one second frequency domain resource.
  • the second configuration information is used to indicate an SRS bandwidth parameter and an SRS bandwidth location parameter, where the SRS bandwidth parameter is used to determine a bandwidth occupied by the second frequency domain resource, and the SRS bandwidth The location parameter is used to determine a location of a bandwidth corresponding to the second frequency domain resource in a bandwidth corresponding to the first frequency domain resource.
  • the bandwidth corresponding to the second frequency domain resource is one of the SRS bandwidth sets configured by the user level configuration parameter C SRS .
  • the first configuration information further includes the number of symbols that the SRS resource can occupy in one time unit. a positive integer
  • the method further includes: the network device sending the third configuration information to the terminal device, so that the terminal device determines the at least one third frequency domain resource according to the first configuration information and the third configuration information, where the at least one The tri-frequency domain resource is a subset of the set of the at least one first frequency domain resource in one or more of the time units; and the network device receives the SRS sent by the terminal device in the at least one first frequency domain resource
  • the method includes: the network device receiving the SRS sent by the terminal device in the at least one third frequency domain resource.
  • the third configuration information is used to indicate the number of reference symbols
  • the number of reference symbols is used to determine at least one first frequency domain resource occupied by the SRS resource in the first time unit, where Greater than the above And said Is a positive integer.
  • the third configuration information is used to configure the at least one fourth frequency domain resource, the bandwidth of the fourth frequency domain resource is greater than the bandwidth of the first frequency domain resource, and the fourth The frequency domain resource contains only one first frequency domain resource.
  • the SRS resource is an aperiodic SRS resource
  • the total bandwidth to be measured corresponds to K non-overlapping frequency resources
  • the bandwidth of the frequency resource is SRS bandwidth
  • a frequency interval between a lowest first frequency domain resource of the at least one first frequency domain resource and a lowest frequency of the total bandwidth to be measured is not greater than a threshold value
  • a frequency interval between a highest frequency domain position of the at least one first frequency domain resource and a highest frequency of the total bandwidth to be measured is not greater than a second threshold
  • the first threshold The value and the second threshold are determined according to at least one of the following parameters: K, N, total bandwidth to be measured and user-level SRS bandwidth.
  • the frequency interval between two adjacent first frequency domain resources in the at least one first frequency domain resource is not greater than a third threshold, where The third threshold is determined according to at least one of the following parameters: K, N, total bandwidth to be measured and user-level SRS bandwidth.
  • the start symbol of the SRS resource in one time unit, and the number of symbols occupied by the SRS resource in one time unit Coordinated with the repetition factor of the SRS resource.
  • the SRS resource is an aperiodic SRS resource
  • the method further includes: if K is not equal The network device does not receive the SRS in the first time unit; or, if K is greater than The network device does not receive the SRS in the first time unit; or, if K is less than The network device does not receive the SRS in the first time unit.
  • the value of the repetition factor of the SRS resource includes 1, 2, and 4.
  • the first time unit is a time slot, a subframe, a mini-slot, or a transmission time interval TTI.
  • the present application provides a terminal device having a function of implementing a terminal device in a method design of the above first aspect.
  • These functions can be implemented in hardware or in software by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the application provides a network device having the function of implementing the network device in the method design of the foregoing second aspect.
  • These functions can be implemented in hardware or in software by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the application provides a terminal device, where the terminal device includes a transceiver, a processor, and a memory.
  • the processor is for controlling transceiver transceiver signals for storing a computer program for calling and running the computer program from the memory such that the terminal device performs the method of the first aspect above.
  • the application provides a network device including a transceiver, a processor, and a memory.
  • the processor is for controlling transceiver transceiver signals for storing a computer program for calling and running the computer program from memory such that the network device performs the method of the second aspect.
  • the present application provides a communication device, which may be a terminal device in the above method design, or a chip disposed in the terminal device.
  • the communication device includes a memory for storing computer executable program code, a communication interface, and a processor coupled to the memory and the communication interface.
  • the program code stored in the memory includes instructions which, when executed by the processor, cause the communication device to perform the method performed by the terminal device in any of the possible aspects of the first aspect or the second aspect described above.
  • the present application provides a communication device, where the communication device includes: the network device in the above method design, or a chip disposed in the network device.
  • the communication device includes a memory for storing computer executable program code, a communication interface, and a processor coupled to the memory and the communication interface.
  • the program code stored in the memory includes instructions that, when executed by the processor, cause the communication device to perform the method performed by the network device in any of the possible aspects of the first aspect or the second aspect described above.
  • the application provides a computer program product comprising: computer program code, causing a computer to perform the method of the above aspects when the computer program code is run on a computer.
  • a computer readable medium storing program code for causing a computer to perform the method of the above aspects when the computer program code is run on a computer.
  • the present application provides a chip system including a processor for a terminal device to implement the functions involved in the above aspects, such as, for example, receiving or processing data and/or processing in the above method. information.
  • the chip system further comprises a memory for storing necessary program instructions and data of the terminal device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the present application provides a chip system including a processor for supporting a network device to implement the functions involved in the above aspects, such as, for example, transmitting or processing data and/or data involved in the above method. Or information.
  • the chip system further includes a memory for storing necessary program instructions and data of the network device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the network device can support multiple frequency hopping modes by configuring a repetition factor of the SRS resource.
  • the network device can support frequency hopping between time slots, time slots, and frequency hopping on each symbol in the time slot.
  • Frequency hopping, periodic or semi-persistent SRS resources and non-periodic SRS frequency hopping between time slots and time slots can improve the flexibility of frequency hopping.
  • FIG. 1 is a wireless communication system 100 suitable for use in an embodiment of the present application.
  • FIG. 2 is a schematic interaction diagram of a transmission reference signal according to an embodiment of the present application.
  • 3 is a schematic diagram of a repetition factor of SRS resources.
  • FIG. 4 is a schematic diagram of the terminal device pushing and transmitting the SRS.
  • FIG. 5 is a schematic diagram of determining a second frequency domain resource in an embodiment of the present application.
  • FIG. 6 is a schematic diagram of determining a third frequency domain resource in an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a terminal device transmitting an SRS.
  • FIG. 8 is another schematic diagram of a terminal device transmitting an SRS.
  • FIG. 9 is a frequency hopping pattern in a configuration using an embodiment of the present application.
  • FIG. 10 is a frequency hopping pattern in another configuration using an embodiment of the present application.
  • Figure 11 is a frequency hopping pattern in a configuration.
  • Figure 12 is a frequency hopping pattern in another configuration.
  • FIG. 13 is a frequency hopping pattern in a configuration using an embodiment of the present application.
  • FIG. 14 is a frequency hopping pattern in another configuration using an embodiment of the present application.
  • FIG. 15 is a frequency hopping pattern in a configuration using an embodiment of the present application.
  • FIG. 16 is a frequency hopping pattern in another configuration using an embodiment of the present application.
  • FIG. 17 is a schematic block diagram of a terminal device 500 according to an embodiment of the present application.
  • FIG. 18 is a schematic block diagram of a network device 600 according to an embodiment of the present application.
  • FIG. 19 is a schematic structural diagram of a terminal device 700 according to an embodiment of the present application.
  • FIG. 20 is a schematic structural diagram of a network device 800 according to an embodiment of the present application.
  • FIG. 1 is a wireless communication system 100 suitable for use in an embodiment of the present application.
  • At least one network device 101 may be included in communication system 100 in communication with one or more terminal devices (e.g., terminal device 102 and terminal device 103 shown in FIG. 1).
  • the network device 101 may be a base station, or may be a device integrated with a base station controller, or may be another device having similar communication functions.
  • the wireless communication system mentioned in the embodiments of the present application includes, but is not limited to, a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, and a wideband code division multiple access (wideband).
  • Code division multiple access (WCDMA) system general packet radio service (GPRS), long term evolution (LTE) system, advanced long term evolution (LTE-A) system, LTE frequency division duplex ( Frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, Next-generation communication systems (for example, fifth-generation (5G) communication systems), converged systems for multiple access systems, or evolutionary systems, three major application scenarios for next-generation 5G mobile communication systems, eMBB, URLLC and eMTC Or a new communication system that will emerge in the future.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • the network device 101 involved in the embodiment of the present application may be any device having a wireless transceiver function or a chip that can be disposed on the device, and the device includes but is not limited to: a base station (for example, a base station NodeB, an evolved base station eNodeB, Network equipment in a five-generation (5G) communication system (for example, a transmission point (TP), a transmission reception point (TRP), a base station, a small base station device, etc.), a network device in a future communication system, An access node, a wireless relay node, a wireless backhaul node, etc. in a wireless-fidelity (WiFi) system.
  • a base station for example, a base station NodeB, an evolved base station eNodeB, Network equipment in a five-generation (5G) communication system (for example, a transmission point (TP), a transmission reception point (TRP), a base station, a small base station device, etc.
  • 5G five-generation
  • TP
  • the terminal device (for example, the terminal device 102 in FIG. 1) involved in the embodiment of the present application may include various access terminals, user units, user stations, mobile stations, mobile stations, remote stations, and remote terminals having wireless communication functions.
  • it can be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, industrial control (industrial control) Wireless terminal, machine type communication (MTC) terminal, customer premise equipment (CPE), wireless terminal in self driving, wireless in remote medical A terminal, a wireless terminal in a smart grid, a wireless terminal in a transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like.
  • the embodiment of the present application does not limit the application scenario.
  • the foregoing terminal device and a chip that can be disposed in the foregoing terminal device are collectively referred to as a terminal device.
  • the SRS resource refers to a resource configured by the network device for the terminal device to send the sounding reference signal SRS.
  • the terminal device uses one time unit as a unit for transmitting the SRS to the network device.
  • the network device configures the SRS resource for the terminal device, including the configuration of the frequency domain resource, the time domain resource, and the code domain resource.
  • the embodiments of the present application mainly relate to the configuration of time domain resources and frequency domain resources.
  • the SRS resource can be understood as a configuration of a set of SRS resources.
  • the time unit mentioned in the embodiment of the present application may be a subframe, a time slot, a mini time slot, a transmission time interval (TTI), and the first time unit is an example of a time unit.
  • the first time unit can also be understood as the time unit that currently needs to transmit the SRS.
  • Total bandwidth to be measured indicates the frequency hopping range, which is one of the bandwidth sets configured by the user-level configuration parameter C SRS . In this application, it is recorded as b hop .
  • the “total bandwidth to be measured includes K non-overlapping frequency resources” and “total hop count K” described in the embodiments of the present application, and actually describes the total bandwidth to be measured from different angles.
  • the total bandwidth to be measured can be covered, and each hop corresponds to the bandwidth occupied by one of the K non-overlapping frequency resources.
  • the bandwidth occupied by each of the K non-overlapping frequency resources is one SRS bandwidth.
  • User-level configuration parameter C SRS used to configure a bandwidth set, and the bandwidth set includes multiple SRS bandwidths.
  • User Level Configuration Bandwidth B SRS is one SRS bandwidth in the bandwidth set of the C SRS configuration.
  • SRS bandwidth refers to the bandwidth used to transmit SRS on one symbol.
  • C SRS is a cell level configuration parameter
  • C SRS is a user level configuration parameter
  • One is the number of symbols that the SRS resource can occupy in one time.
  • One is how many symbols the terminal device sends SRS to the network device in one time unit.
  • the former can be considered as the configuration of the network device.
  • the terminal device can send the SRS by using the configuration of the network device, and the number of symbols used by the terminal device when sending the SRS is equal.
  • the terminal device may also send the SRS by using only part of the resources of the SRS resource configured by the network device (for example, part of the frequency domain resource or part of the time domain resource). At this time, the number of symbols used by the terminal device when transmitting the SRS is Not equal, for example, may be less than
  • the numbers “first”, “second”, and the like appearing in the embodiments of the present application are only used to distinguish different description objects, for example, to distinguish different frequency domain resources (for example, the first frequency domain resource, the second frequency The domain resource), the threshold value (for example, the first threshold value, the second threshold value, and the third threshold value) or the configuration information, etc., should not be limited to the technical solutions of the embodiments of the present application.
  • FIG. 2 is a schematic interaction diagram of a transmission reference signal according to an embodiment of the present application.
  • the technical solution of the embodiment of the present application is described by using a sounding reference signal (SRS) as an example.
  • SRS sounding reference signal
  • the technical solution of the present application can also be used for other reference signal transmission scenarios of channel measurement.
  • the network device sends first configuration information of the SRS resource to the terminal device.
  • the terminal device receives the first configuration information of the SRS resource from the network device.
  • the first configuration information of the SRS resource is used to indicate a time domain parameter configured by the network device for the SRS resource.
  • these time domain parameters include time domain parameters at the time slot level and time domain parameters at the symbol level.
  • the time domain parameters at the slot level include the period and time domain offset of the SRS resources.
  • the time domain parameters of the slot level include the time domain offset of the SRS resource, or the minimum value of the time domain offset.
  • the channel change speed is different at different carrier frequencies. For example, the channel changes rapidly at high frequencies and the channel changes slowly at low frequencies.
  • the slot lengths are different for different subcarrier spacings. Therefore, the absolute time length corresponding to the same slot level period is also different. For example, the time length of one slot of 15 KHz may be 4 times the length of one slot of 60 KHz.
  • scheme A In order to balance the measurement requirements of the terminal equipment for the carrier frequency and the sub-carrier spacing, the following three configuration schemes are proposed in the embodiment of the present application (hereinafter referred to as scheme A, scheme B, and scheme C, respectively).
  • the network device can configure the slot level parameters of the SRS resource according to Table 1. Compared with the periodic configuration in which only 2 to 320 ms is supported in LTE, the configuration of 640 slots and 1280 slots is added, and the network device can configure a larger slot-level period for a larger sub-carrier spacing.
  • some periods contain multiple time offsets, see Table 3, and the vacant portion of Table 3 is not limited.
  • Different subcarrier spacings correspond to different configuration tables, or a set of subcarrier spacings corresponds to a set of configuration tables.
  • 15 KHz corresponds to a period of 2 to 320 slots
  • 60 KHz corresponds to a period of 10 to 1280 slots. See Table 4 and Table 5.
  • the case where the period is 2 may not be included. Or contain multiple offsets in one cycle.
  • Different carrier frequencies correspond to different configuration tables.
  • Tables 4 and 5 in Scheme B are for 6 GHz or less and 6 GHz or higher, respectively.
  • different carrier frequencies correspond to different period units.
  • the tables of scenario A and scenario B use time slots as the unit of the cycle.
  • ⁇ is the index of the subcarrier spacing. See Table 6.
  • the network device may configure or pre-define the minimum time interval or time interval of the PDCCH carrying the DCI or the Control Resource Set (CORESET) and the SRS resources.
  • CORESET Control Resource Set
  • time slot m the time slot in which the PDCCH or CORESET carrying the DCI is recorded
  • time slot n the time slot in which the SRS resource is located
  • the unit of the period may be an optional case as listed below.
  • the optional value of the symbol level interval has a certain range, and the SRS resource mapping is guaranteed to be on the symbol that can send the SRS. For example, the last 6 symbols of slot n.
  • the time interval is configured by the network device, and the time interval has a minimum value, which can be predefined.
  • the minimum value can be predefined as 4 time slots.
  • the terminal device may report the minimum value to the network device according to its own measurement capability.
  • the network device may select one time interval to allocate to the terminal device among some candidate values.
  • the terminal device may report at least one of the following: a time interval, a minimum value of the time interval, and a candidate value of the time interval.
  • the network device configures the time interval for the SRS resource.
  • the network device configures a time interval for the SRS resource set where the SRS resource is located.
  • the time interval of the SRS resource set is adopted.
  • the network device may not need to configure time interval information of each SRS resource in the SRS resource.
  • the terminal device jointly determines the time interval between the DCI and the SRS resource transmission according to the time interval of the SRS resource set and the time interval of the SRS resource (for example, the two are added).
  • the time interval of the SRS resource set and/or the SRS resource may be determined according to the identifier of the SRS resource set or the identifier of the SRS resource. For example, the time interval is equal to the sum of the identity value or the identity value and an offset value.
  • the terminal device determines the time domain resource of the SRS resource according to the symbol or time slot in which the PDCCH or CORESET carrying the DCI is located, and the time interval. For example, the terminal device determines that m is the sum of n and the time domain interval. For another example, the terminal device determines the time domain resource of the SRS resource according to the sum of the symbol of the PDCCH or CORESET carrying the DCI and the time domain interval.
  • the DCI may be used to trigger at least one SRS resource, and may also be used to trigger at least one SRS resource set.
  • the DCI includes an identifier for indicating SRS resource set identification information or for indicating an SRS resource set.
  • the above method for determining the time domain interval for the aperiodic SRS may also be used for a semi-persistent SRS.
  • Semi-persistent SRS means that the SRS can be activated by DCI or MAC CE triggering, and the SRS can be deactivated by DCI or MAC CE triggering. Alternatively, the SRS can be activated by DCI or MAC CE triggering and activated after a period of time. This period of time can be specified by the protocol (no base station configuration, local pre-storage or pre-configuration) or can be configured by the base station.
  • the time between receiving the configuration information and the activation may be specified by the protocol (no base station is required) Configuration, local pre-storage or pre-configuration) or through base station configuration, the period between activation and deactivation can also be specified by the protocol (no base station configuration, local pre-storage or pre-configuration) or can be configured by the base station.
  • the base station configures or pre-defines the first time interval and/or the second time interval.
  • the first time interval is a minimum value of a time interval or a time interval of a PDSCH where the DCI of the semi-persistent SRS resource is activated, or a PDSCH where the MAC CE is located, and the semi-persistent SRS resource, for example, the terminal device may be after the time interval.
  • the first transmission opportunity of the semi-persistent SRS starts transmission, and the transmission opportunity is determined according to time domain configuration information of the semi-persistent SRS.
  • the second time interval is a time interval of the PDCCH where the DCI of the semi-persistent SRS resource is located, or the PDSCH where the CORESET or the MAC CE is located, and the time interval for stopping the transmission of the semi-persistent SRS resource or the last transmission of the SRS resource, for example, the terminal device may be at The transmission of the semi-persistent SRS is stopped after the time interval.
  • the configuration method of the specific time interval is the same as that of the non-periodic SRS resource.
  • the DCI or MAC CE may be used to activate or deactivate the at least one semi-persistent SRS resource, or may be used to activate or deactivate the at least one semi-persistent SRS resource set.
  • the DCI or MAC CE When used to activate or deactivate a semi-persistent SRS resource set, the DCI or MAC CE includes an identifier for indicating semi-persistent SRS resource set identification information or for indicating an SRS resource set, and the semi-persistent SRS resource set is in all half The SRS resource set or the identifier in all SRS resource sets is persisted or supported by the form of a bitmap.
  • Each bit in the bitmap corresponds to a semi-persistent SRS resource set, and the length of the bitmap is not less than the configured number of semi-persistent SRS resource sets, or equal to the number or maximum number of semi-persistent SRS resource sets.
  • some of the rows or partial columns in the table in the foregoing solution may be used separately, or at least a part of the rows or at least a part of the columns may be used as part of the complete configuration table, which is not limited herein.
  • the time domain parameters of the symbol level of the SRS resource mainly include the following:
  • the start symbol of the SRS resource in one slot is located on the last M symbols in one slot.
  • the start symbol of the SRS resource in one slot is located on the last 6 symbols of the slot, and the position of the start symbol of the SRS resource in this slot is the last 6 symbols.
  • the number of symbols of the SRS resource that is, the number of symbols occupied by the SRS resource in one time slot (hereinafter referred to as ), Is a positive integer.
  • the repetition factor of the SRS resource refers to that the SRS resource is mapped to the same subcarrier in one slot and is mapped to the number of consecutive at least one symbol N, N ⁇ 1 and is an integer.
  • the repetition factor may also be referred to as a repetition length.
  • FIG. 3 is a schematic diagram of the repetition length of SRS resources.
  • the number of symbols of the SRS resource is equal to 4 as an example.
  • the repetition length of the SRS resource is equal to one.
  • the repetition length of the SRS resource is equal to two.
  • the repetition length of the SRS resource is equal to four.
  • the foregoing SRS resource satisfies some constraint relationship between the start symbol in one slot, the symbol number of the SRS resource, and the repetition length of the SRS resource.
  • the start symbol of the SRS resource in one slot determines the maximum number of symbols of the SRS resource.
  • the number of symbols of the SRS resource can only be equal to 1.
  • the number of symbols of the SRS resource determines the repetition length of the SRS resource. In other words, the repetition length of the SRS resource does not exceed the number of symbols of the SRS resource.
  • N the number of symbols included in one slot
  • N-1 the index of the symbols in the slot
  • the maximum value of the start symbol of the SRS is not greater than N-M.
  • the number of symbols of the SRS resource may be equal to 1, 2 or 4.
  • the repetition factor of the SRS resource may be equal to 1, 2 or 4.
  • the present application proposes jointly coding the time domain parameters of the above three symbol levels of the SRS resource to reduce resource overhead.
  • the start symbol of the SRS resource, the number of symbols of the SRS resource, and the repetition factor of the SRS resource may be jointly encoded by the network device and sent to the terminal device through one signaling.
  • the signaling may be the first configuration information in the embodiment of the present application.
  • the repetition length of SRS resources can also be configured separately, see Table 8 below.
  • the repetition length of the SRS resource is configured as shown in Table 9.
  • some of the rows or partial columns in the table in the foregoing solution may be used separately, or at least a part of the rows or at least a part of the columns may be used as part of the complete configuration table, which is not limited herein.
  • the terminal device determines, according to the time domain configuration information of the SRS resource, that the SRS resource is mapped in the first time unit by less than one first frequency domain location.
  • the time domain configuration information of the SRS resource can be carried by Downlink Control Information (DCI).
  • DCI Downlink Control Information
  • the terminal device may send the SRS to the network device in the time slot n+k.
  • k is the time domain offset of the SRS resource
  • n and k are positive integers.
  • FIG. 4 is a schematic diagram of the terminal device pushing and transmitting the SRS.
  • the terminal device transmits the SRS on the slot n+k+2, and so on.
  • the network device may pre-configure the maximum time domain frequency domain quantity t (t>0 and an integer) of the SRS. That is, if the DCI triggered by the DCI on the slot n is not transmitted in the slot after the slot n+t.
  • the time domain offset t may be configured by higher layer signaling and/or DCI of the network device. Alternatively, t can also be predefined.
  • the following describes a process in which the terminal device determines, according to the first configuration information, at least one first frequency domain resource that the SRS resource maps in the first time unit.
  • time unit For ease of understanding, we will describe one time unit as a time slot as an example.
  • the terminal device determines, according to the first configuration information of the SRS resource and the current time slot, the count n SRS of the SRS , and determines the frequency domain resource that the SRS resource maps in the current time slot according to the n SRS.
  • the frequency domain resource, the bandwidth of the first frequency domain resource is the SRS bandwidth, configured by B SRS ).
  • the following describes the SRS resources and the aperiodic SRS resources for the period (including semi-persistence).
  • n SRS represents a count of locations within a radio frame period that are available for SRS to transmit on consecutive subcarriers of consecutive symbols.
  • the n SRS may be determined according to the following parameters: a system frame number, a slot number, a symbol number (that is, an index of a symbol), a start symbol of an SRS resource, a symbol number of an SRS resource, and a repetition factor of an SRS resource.
  • n SRS can be calculated and determined according to the following formula (1):
  • the physical meaning of the parameters in formula (1) is as follows: Indicates the number of symbols of the SRS resource; n represents the system frame number; Indicates the slot number; n s represents the slot number in the frame; T SRS represents the period of the SRS resource; n symbol represents the symbol in the slot; Indicates the start symbol of the SRS resource in one slot (hereinafter referred to as the start symbol of the SRS resource); Lr represents the repetition factor of the SRS resource. symbol Indicates rounding down.
  • the number of symbols indicating that the symbol in the slot is different from the start symbol of the SRS resource may be used as a single variable or may be obtained by other expressions, for example, according to the symbol number in the subframe or in the frame, and the SRS resource.
  • the sequence number indicating the current time slot in one frame period in all time slots available for transmitting the SRS may also be calculated by other equivalent expressions.
  • the sum of the numbers of symbols that can be sent by the user to the SRS in one frame period up to the current time slot can also be calculated by other equivalent expressions.
  • n SRS (1) may be calculated in one case, we do not rule out other cases n SRS is calculated according to the other formulas.
  • n SRS represents the count of the location of the currently triggered SRS resource transmitted on the same subcarrier of consecutive symbols.
  • the n SRS can be determined according to the following parameters: the start symbol of the SRS resource in one slot, the symbol number, and the repetition factor of the SRS resource (referred to as L r ).
  • n SRS can be calculated and determined according to the following formula (2):
  • the number of symbols transmitted by the SRS is a minimum of the number of symbols of the SRS resource, the product of the total hop count and the repetition factor. Therefore, when the number of symbols of the SRS resource When the product of the total hop count and the repetition factor is K ⁇ N, only the symbols of the SRS resource are transmitted several times. The SRS, that is, does not complete the transmission of all hops. Or when the number of symbols of the SRS resource When the product K ⁇ N is greater than the total hop count and the repetition factor, the SRS transmission is performed only on the K ⁇ N symbols of the SRS resource, and the remaining symbols in the SRS resource are not transmitted in the SRS. Optionally, it may be used for transmission of other uplink channels (for example, PUSCH), or not for transmission, or for transmission of other SRSs.
  • PUSCH uplink channels
  • the number of symbols indicating the difference between the symbol in the slot and the start symbol of the SRS may be used as a single variable or may be obtained by other expressions. For example, it is determined according to a symbol number within a subframe or within a frame, a start symbol of an SRS, a subframe number, and the like.
  • the time slot referred to herein is determined according to the time interval introduced in the foregoing step 210 and the resource in which the PDCCH or CORESET carrying the DCI for triggering the SRS transmission is located.
  • n SRS represents the count of the location of the currently triggered SRS resource transmitted on the same subcarrier of consecutive symbols.
  • the n SRS may be determined according to the following parameters: a start symbol of the SRS resource, a symbol number of the SRS resource, a repetition factor of the SRS resource, a symbol number, a time difference between the trigger DCI and the current time slot, and a time domain offset.
  • the time domain offset referred to herein is also the time interval in step 210 above.
  • n SRS can be calculated and determined according to the following formula (5):
  • n SRS the maximum value of n SRS is the total hop count.
  • the number of symbols indicating the difference between the symbol in the slot and the start symbol of the SRS may be used as a single variable or may be obtained by other expressions. For example, it is determined according to a symbol number within a subframe or within a frame, a start symbol of an SRS, a subframe number, and the like.
  • the time slot difference indicating the first transmission of the aperiodic SRS to the current time slot can be calculated by other equivalent methods.
  • the number of symbols that can be used to transmit the aperiodic SRS before the first transmission of the aperiodic SRS to the current time slot may also be calculated by other equivalent expressions.
  • the terminal device After the terminal device determines the n SRS , it may determine, according to the n SRS , at least one frequency domain resource (referred to as a first frequency domain resource in the present application) that the SRS resource maps in the current time slot.
  • at least one frequency domain resource referred to as a first frequency domain resource in the present application
  • the terminal device sends the SRS to the network device in the determined at least one first frequency domain resource.
  • step 220 after the terminal device determines the at least one first frequency domain resource that the SRS resource maps in the current time slot, in step 230, the terminal device sends the SRS to the network device in the at least one first frequency domain resource.
  • the process in which the terminal device sends the SRS to the network device through the at least one first frequency domain resource is a process of frequency hopping.
  • the network device can support multiple frequency hopping modes by configuring a repetition factor of the SRS resource.
  • the network device can support frequency hopping between time slots, time slots, and frequency hopping on each symbol in the time slot. Frequency hopping between every two symbols in time slots and time slots, frequency hopping of non-periodic SRS, etc., can improve the flexibility of frequency hopping.
  • the terminal device sends the SRS to the network device in the determined at least one first frequency domain resource.
  • the terminal device may send the SRS on each of the at least one first frequency domain resource.
  • the present application further provides the following frequency hopping manners, so that the terminal device can send the SRS in a part of the resource block (RB) of the at least one first frequency domain resource.
  • the terminal device determines, according to the first configuration information and the second configuration information, at least one second frequency domain resource that is mapped by the SRS resource in the first time unit, where the second frequency domain resource is part of the first frequency domain resource.
  • the terminal device sends the SRS to the network device in the at least one second frequency domain resource.
  • the network device configures the second configuration information in addition to the slot level time domain parameter and the symbol level time domain indicated by the first configuration information described above.
  • the terminal device may determine at least one second frequency domain resource based on the at least one first frequency domain resource based on the first configuration information and the second configuration information.
  • a second frequency domain resource is part of a first frequency domain resource.
  • the second configuration information is used to indicate an SRS bandwidth parameter and an SRS bandwidth location parameter.
  • the SRS bandwidth location parameter is used to determine the bandwidth occupied by the second frequency domain resource.
  • the SRS bandwidth location parameter is used to determine the location of the bandwidth occupied by the second frequency domain resource in the bandwidth occupied by the first frequency domain resource.
  • the SRS bandwidth parameter is denoted as b subband
  • the SRS bandwidth position parameter is recorded as
  • the b subband is actually configured with the bandwidth actually used by the terminal device when sending the SRS.
  • the value of b subband ranges from B SRS ⁇ b subband ⁇ 3, and the specific value of the bandwidth configured by b subband can be obtained by querying the SRS bandwidth configuration table.
  • the range of values is If it is assumed that a user-level SRS bandwidth can contain at most the bandwidth corresponding to k b subbands , then The specific value should be k is a positive integer.
  • 5 is a schematic diagram of determining a second frequency domain resource.
  • the subband of the user-level SRS bandwidth is the second frequency domain resource in the embodiment of the present application.
  • the number of resource blocks RB occupied by the second frequency domain resource in the frequency domain is expressed as m SRS, subband , m SRS, and the subband can be obtained by querying the SRS bandwidth configuration table.
  • the initial frequency domain location in the at least two second frequency domain resources may be based on Calculated by the following formula (6):
  • the relationship with b subband and B SRS may be interchanged. That is, the B SRS is used to indicate the bandwidth size actually used by the terminal device when transmitting the SRS.
  • b subband is used to indicate user-level SRS bandwidth.
  • the terminal device determines, according to the first configuration information and the third configuration information, at least one third frequency domain resource that is mapped by the SRS resource in the first time unit, where the set of the at least one third frequency domain resource is the at least one first frequency A subset of the set of domain resources.
  • the terminal device sends an SRS to the network device in the at least one third frequency domain resource.
  • the network device configures the third configuration information in addition to the first configuration information described above.
  • the terminal device may determine at least one third frequency domain resource based on the at least one first frequency domain resource based on the first configuration information and the third configuration information.
  • the set of the at least one third frequency domain resource is a subset of the set of at least one first frequency domain resource in one or more time units.
  • the third configuration information may be used to indicate the number of reference symbols
  • the number of reference symbols Determining at least one first frequency domain resource occupied by the SRS resource in a first time unit (eg, one time slot), where And is an integer.
  • the value range is greater than or equal to the number of symbols of the SRS resource.
  • the terminal device can calculate n SRS according to the following formula (7):
  • the terminal device can implement transmitting the SRS only on part of the first frequency domain resources.
  • the partial first frequency domain resource mentioned herein is at least one third frequency domain resource as referred to in the present application. That is, the set of the at least one third frequency domain resource is actually a subset of the set of the at least one first frequency domain resource.
  • FIG. 6 is a schematic diagram of determining a third frequency domain resource.
  • the network device is configured For SRS resources with a number of symbols equal to 4, there are 4 first frequency domain locations in one slot. At this time, the terminal device transmits the SRS on each of the first frequency domain resources. If the network device is configured And the terminal device has Symbol hopping for calculation, but only in practice The SRS is transmitted on the symbols, and the terminal device can also implement the SRS transmission only on some of the RBs.
  • Mode 2 is not applicable for aperiodic SRS resources that only support frequency hopping within slots. Mode 2 is applicable for aperiodic SRS resources that support intra-slot hopping and inter-slot hopping.
  • the formula for calculating n SRS can be as shown in equation (8):
  • the total hop count corresponding to the total bandwidth to be measured is recorded as K,
  • the total bandwidth to be measured includes K non-overlapping frequency resources, and the bandwidth of each of the K non-overlapping frequency resources is the SRS bandwidth.
  • the following is a description of the case where the total hop count is larger than the number of symbols of the SRS resource, and the total bandwidth measurement to be measured is not accurate.
  • FIG. 7 is a schematic diagram of a terminal device transmitting an SRS. It can be seen from FIG. 7 that after the terminal device passes 4 hops, the hopping pattern is only distributed in the first 3/4 of the total bandwidth to be measured.
  • FIG. 8 is another schematic diagram of a terminal device transmitting an SRS. Similarly, after the terminal device has passed the measurement of 2 hops, the hopping pattern is only distributed over the first 1/2 of the total bandwidth to be measured.
  • the measurement result of the channel can only be obtained by extrapolation, and thus the accuracy is low.
  • the present application proposes some solutions to make the frequency hopping pattern cover the total bandwidth to be measured as uniformly as possible, thereby improving the accuracy of the measurement.
  • the frequency interval between the first frequency domain location of the bandwidth occupied by the at least one first frequency domain resource and the first frequency domain location of the total bandwidth to be measured is not greater than the first threshold, and/or the at least one first
  • the frequency interval between the second frequency domain location of the bandwidth occupied by the frequency domain resource and the second frequency domain location of the total bandwidth to be measured is not greater than the second threshold.
  • constraint 1 The relationship that is satisfied between the at least one first frequency domain resource and the total bandwidth to be measured is hereinafter referred to as constraint 1.
  • the first frequency domain location of the bandwidth occupied by the at least one first frequency domain resource may be the frequency domain location of the lowest or highest frequency or the center subcarrier of the bandwidth occupied by the at least one first frequency domain resource. Or, it may be other frequency domain locations adjacent to the frequency domain location of the lowest or highest or center subcarrier of the frequency.
  • the second frequency domain location of the bandwidth occupied by the at least one first frequency domain resource may be the frequency domain location of the highest or lowest or the center frequency subcarrier of the bandwidth occupied by the at least one first frequency domain resource, or It may also be other frequency domain locations that are adjacent to the frequency domain location of the highest or lowest or center subcarrier of the frequency.
  • the first frequency domain location of the total bandwidth to be measured may be the frequency domain location of the lowest or highest frequency or the center of the total bandwidth to be measured, or may be the lowest or highest or center of the frequency.
  • the subcarriers are located in other frequency domain locations adjacent to the frequency domain location.
  • the second frequency domain location of the total bandwidth to be measured may be the frequency domain location of the highest or lowest frequency or the center of the total bandwidth to be measured, or may be the highest or lowest or center of the frequency. The other frequency domain locations in the frequency domain where the carrier is located.
  • the first threshold value may be determined according to at least one of the following parameters: K, N, The total bandwidth to be measured and the user-level SRS bandwidth, and/or the second threshold may also be determined according to at least one of the following parameters: K, N, Total bandwidth to be measured and user-level SRS bandwidth.
  • the frequency interval between the first frequency domain position of the bandwidth occupied by the at least one first frequency domain resource and the first frequency domain location of the total bandwidth to be measured should be made.
  • the frequency bandwidth between the second frequency domain location of the bandwidth occupied by the bandwidth occupied by the at least one first frequency domain resource and the second frequency domain location of the total bandwidth to be measured is not greater than the second threshold.
  • the constraint 1 causes the at least one first frequency domain resource not to be distributed only in a part of the total bandwidth to be measured, but covers a larger bandwidth range as much as possible, so that the accuracy of the measurement can be improved.
  • the following manner may be adopted to satisfy the constraint 1 described in the scheme 1 between the determined at least one first frequency domain resource and the total bandwidth to be measured.
  • NUM k For the Kth frequency hopping, calculate NUM k as follows.
  • node A Corresponding node (hereinafter referred to as node A) location
  • the start position of the sub-band transmitting the SRS is calculated according to the following formula (10):
  • the frequency hopping pattern determined according to the method of the scheme 1 is exemplified below.
  • FIG. 9 is a frequency hopping pattern in a configuration of the present application.
  • FIG. 10 is a frequency hopping pattern in another configuration of the present application.
  • the terminal device transmits the SRS.
  • the frequency domain locations are located at evenly spaced Within the band.
  • the frequency separation between the lowest frequency subcarrier of the frequency hopping bandwidth and the lowest subcarrier of the SRS resource is not greater than a threshold (ie, a first threshold).
  • the frequency interval between the highest frequency subcarrier of the frequency hopping bandwidth and the highest frequency subcarrier of the SRS resource is not greater than a threshold (to be distinguished from the first threshold, which is referred to herein as the second threshold).
  • first threshold value and the second threshold value may be equal or unequal.
  • the first threshold and the second threshold may both be equal to That is, the frequency interval between the lowest frequency subcarrier of the total bandwidth to be measured and the lowest frequency subcarrier of the SRS resource is not greater than User-level SRS bandwidth.
  • the first threshold value and the second threshold value may also be set separately. The embodiment of the present application is not limited.
  • the frequency interval between the third frequency domain locations of the adjacent two first frequency domain resources in the at least one first frequency domain resource is not greater than a third threshold, wherein the third threshold is based on at least one of the following parameters One OK: K, Total bandwidth to be measured and user-level SRS bandwidth.
  • the third frequency domain location may be the frequency domain location of the lowest or highest or the center frequency of the subcarriers occupied by the first frequency domain resource, or may be the highest of the bandwidth occupied by the first frequency domain resource. Or the frequency domain location of the lowest or center frequency subcarrier. Alternatively, it may be the position of the frequency domain of the subcarrier at any frequency between the lowest frequency and the highest frequency.
  • the frequency interval ⁇ f k is based on the number of hops in a time slot. And the total number of hops K is determined and should be made The frequency spacing ⁇ f k is not greater than the third threshold.
  • the third threshold may be a user-level bandwidth B SRS , ie
  • Option 2 can guarantee The frequency domain location of the secondary frequency hopping is evenly distributed in the total bandwidth to be measured, and the frequency interval between the third frequency domain locations of the two adjacent frequency domain resources of the SRS transmitted by the terminal device is substantially equal.
  • the starting subcarrier of the SRS resource mapping may be calculated according to the following formulas (11) to (13):
  • the starting subcarriers of the SRS resource mapping may also be calculated according to the following formulas (14) and (15):
  • the hopping pattern determined according to the scheme 2 will be exemplified below with reference to FIG. 11 and FIG.
  • Fig. 11 is an example of a frequency hopping pattern in a configuration. If the calculations are performed using equations (14) and (15), the determined frequency hopping pattern is shown in Fig. 12.
  • Figure 12 is another example of a frequency hopping pattern in a configuration.
  • the frequency hopping pattern is determined according to the scheme provided in the scheme 2, and after four frequency hopping, the frequency domain position of the SRS transmitted by the terminal device is more evenly distributed throughout the bandwidth, so channel measurement can be improved. The accuracy.
  • Fig. 13 is an example of a frequency hopping pattern in a configuration. If the calculations are performed using equations (14) and (15), the determined frequency hopping pattern is shown in Fig. 14. 14 is another example of a frequency hopping pattern in one configuration of the present application.
  • the network device For the number of symbols equals The SRS resource, the network device is configured as follows:
  • the terminal device does not think that it will receive or assume that the network device does not receive the indication that K is not equal to Instructions; or,
  • the terminal device does not consider that it will receive or assume that the network device does not receive the indication that K is greater than Instructions; or,
  • the terminal device does not consider that it will receive or assume that it will not receive the network device to send the indication that K is less than Instructions.
  • the terminal device Based on the default configuration, if K is not equal Or K is greater than Or K is less than Then, the terminal device does not send the SRS on the SRS resource configured in the current time slot.
  • the terminal device determines the hopping pattern according to the following formulas (16), (17), and (18), and implements transmitting the SRS on the partial RB.
  • the network device is configured with the parameter b minhop .
  • the default setting for b minhop can be equal to B SRS . That is to say, if the network device is configured with the value of b minhop , the terminal device adopts the value of the b minhop configuration. If the network device does not have the value b minhop configuration, b minhop take B SRS.
  • the bandwidth of the fourth frequency domain resource may be determined according to the bandwidth set configured by the C SRS . It can be seen from equation (17) that the b hop +1 ⁇ b minhop layer hopping only in the SRS tree bandwidth structure and not hopping on the b minhop +1 ⁇ B SRS layer. Thereby, the SRS can be transmitted only on a part of the RBs of the bandwidth occupied by each of the fourth frequency domain resources.
  • the bandwidth corresponding to the partial RBs mentioned here is the bandwidth of the first frequency domain resource determined by the B SRS .
  • the hopping pattern determined according to the method of the mode 4 will be exemplified below with reference to FIGS. 15 and 16.
  • FIG. 15 is a frequency hopping pattern in a configuration using an embodiment of the present application.
  • SRS is sent on all RBs in the total bandwidth range.
  • FIG. 16 is a frequency hopping pattern in another configuration using an embodiment of the present application.
  • C SRS 24
  • b minhop is configured to be 1
  • B SRS is configured to be 2
  • the bandwidth of the fourth frequency domain resource is greater than the bandwidth of the first frequency domain resource, for example, the fourth frequency domain in this embodiment.
  • the bandwidth of the resource is twice the bandwidth of the first frequency domain resource, and then the fourth frequency domain resource of the two adjacent SRS transmissions is determined according to formula (17), that is, frequency hopping, but the SRS is actually transmitted in the fourth frequency domain resource.
  • the relative position of the first frequency domain resource is unchanged, that is, no frequency hopping.
  • the SRS can be sent on a first frequency domain resource bandwidth in all the fourth frequency domain resources in the bandwidth to be measured by using frequency hopping, that is, the SRS is sent on some RBs in the bandwidth to be measured, and It is ensured that the RB partitions that transmit the SRS are equally distributed in the bandwidth to be measured.
  • formulas (16) and (18) may have other different calculation methods or expression forms, which are not limited by the invention.
  • the qualification of the formula (17) can be made as follows:
  • the pre-definition can also be specified in the communication protocol.
  • the indication information or the configuration information in the embodiment of the present application may be transmitted through one signaling, or may be transmitted through multiple signaling.
  • the signaling may be carried in RRC signaling, or in MAC CE signaling, or in DCI.
  • the multiple signaling transmission may be indication information or configuration information divided into multiple parts, and each part is transmitted by one signaling. It may also be that one candidate set of information or configuration information is first configured by one signaling, and one of the candidate sets is indicated by another signaling. Alternatively, a candidate set of information or configuration information may be configured by one signaling, and then a subset of the candidate sets may be indicated by the second signaling, and then a third signaling may indicate a piece of information in the subset of candidate sets. .
  • the indication information or configuration information may also be configured by combining the foregoing various methods.
  • the method for transmitting a reference signal in the embodiment of the present application is described in detail above with reference to FIG. 1 to FIG. 16.
  • the terminal device and the network device in the embodiments of the present application are described below with reference to FIG. 17 to FIG.
  • FIG. 17 is a schematic block diagram of a terminal device 500 according to an embodiment of the present application.
  • the terminal device 500 includes a receiving unit 510, a processing unit 520, and a transmitting unit 530. among them,
  • the receiving unit 510 is configured to receive first configuration information of the sounding reference signal SRS resource from the network device, where the first configuration information includes a repetition factor of the SRS resource, where the repetition factor of the SRS resource is that the SRS resource is mapped to in one time unit The same subcarrier and mapped to the number of consecutive at least one symbol N, N ⁇ 1 and an integer;
  • the processing unit 520 is configured to determine, according to the first configuration information, at least one first frequency domain resource that the SRS resource maps in the first time unit;
  • the sending unit 530 is configured to send, to the network device, an SRS in the at least one first frequency domain resource.
  • FIG. 18 is a schematic block diagram of a network device 600 according to an embodiment of the present application. As shown in FIG. 18, the network device 600 includes a transmitting unit 610 and a receiving unit 620. among them,
  • the sending unit 610 is configured to send first configuration information of the SRS resource to the terminal device, where the first configuration information includes a repetition factor of the SRS resource, where the repetition factor of the SRS resource refers to the SRS resource mapping to the same subcarrier in one time unit And mapping to the number of consecutive at least one symbol N, N ⁇ 1 and being an integer;
  • the receiving unit 620 is configured to receive an SRS that is sent by the terminal device in the at least one first frequency domain resource, where the at least one first frequency domain resource is a frequency domain location of the sending SRS that is determined by the terminal device according to the first configuration information.
  • Each unit in the network device 600 of the embodiment of the present application and the other operations or functions described above are respectively configured to implement a corresponding flow performed by the network device in the method for transmitting the reference signal. For the sake of brevity, it will not be repeated here.
  • FIG. 19 is a schematic structural diagram of a terminal device 700 according to an embodiment of the present application.
  • the terminal device 700 includes one or more processors 701, one or more memories 702, and one or more transceivers 703.
  • the processor 701 is configured to control the transceiver 703 to transmit and receive signals
  • the memory 702 is used to store a computer program
  • the processor 701 is configured to call and run the computer program from the memory 702 such that the terminal device 700 performs a method of transmitting a reference signal.
  • the terminal device 700 performs a method of transmitting a reference signal.
  • FIG. 20 is a schematic structural diagram of a network device 800 according to an embodiment of the present application.
  • network device 800 includes one or more processors 801, one or more memories 802, and one or more transceivers 803.
  • the processor 801 is configured to control the transceiver 803 to transmit and receive signals
  • the memory 802 is used to store a computer program
  • the processor 801 is configured to call and run the computer program from the memory 802 such that the network device 800 performs a method of transmitting a reference signal.
  • the network device 800 performs a method of transmitting a reference signal.
  • the present application also provides a computer program product, comprising: computer program code, when the computer program code is run on a computer, causing a computer to execute the method for transmitting a reference signal to be executed by a terminal device Corresponding processes and / or operations.
  • the present application further provides a computer readable medium storing program code, when the computer program code is executed on a computer, causing a computer to execute the above-mentioned transmission reference signal, which is executed by the terminal device Corresponding processes and / or operations.
  • the present application also provides a chip system including a processor for a terminal device to implement the functions involved in the method of transmitting a reference signal. For example, data and/or information involved in the above methods are received or processed.
  • the chip system further comprises a memory for storing necessary program instructions and data of the terminal device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the present application also provides a chip system including a processor for supporting a network device to implement the functions involved in the method of transmitting a reference signal. For example, data and/or information involved in the above methods are transmitted or processed.
  • the chip system further includes a memory for storing necessary program instructions and data of the network device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the processor may be a central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more programs for controlling the program of the present application.
  • the processor can include a digital signal processor device, a microprocessor device, an analog to digital converter, a digital to analog converter, and the like.
  • the processor can distribute the control and signal processing functions of the mobile device among the devices according to their respective functions.
  • the processor can include functionality to operate one or more software programs, which can be stored in memory.
  • the functions of the processor may be implemented by hardware or by software executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the memory can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of information and instructions that can be stored. Dynamic storage device. It can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, and a disc storage (including a compact disc, a laser disc, a compact disc, a digital versatile disc, a Blu-ray disc, etc.), a disk storage medium or other magnetic storage device, or any other device that can be used to carry or store desired program code in the form of an instruction or data structure and accessible by a computer. Medium, but not limited to this.
  • EEPROM electrically erasable programmable read-only memory
  • CD-ROM compact disc read-only memory
  • disc storage including a compact disc, a laser disc, a compact disc, a digital versatile disc, a Blu-ray disc, etc.
  • the foregoing memory and the memory may be physically independent units, or the memory may be integrated with the processor.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are only illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • 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 objectives of the technical solution of the embodiment.
  • each functional unit in each embodiment of the present application 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 above functions are implemented in the form of software and sold or used as stand-alone products, they can be stored in a computer readable storage medium.
  • the part of the technical solution of the present application which contributes in essence or to the prior art, or part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included 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 application.
  • 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 code. .

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Abstract

本申请提供一种发送探测参考信号SRS的方法，可以支持多种跳频方式，从而可以提高跳频的灵活性。该方法包括：终端设备从网络设备接收SRS资源的第一配置信息，第一配置信息包括SRS资源的重复因子，其中，SRS资源的重复因子是指SRS资源在一个时间单元内被映射在相同子载波且映射在连续的至少一个符号的个数N，N≥1且为整数；终端设备根据第一配置信息，确定SRS资源在第一时间单元内映射的至少一个第一频域资源；终端设备在所述至少一个第一频域资源，向网络设备发送SRS。

Description

发送探测参考信号SRS的方法和装置
本申请要求于2017年11月17日提交中国专利局、申请号为201711149046.X、申请名称为“发送探测参考信号SRS的方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，尤其涉及一种发送探测参考信号SRS的方法和装置。
背景技术
在长期演进(long term evolution，LTE)或演进的LTE(LTE-advanced，LTE-A)系统中，终端设备的上行测量是通过发送探测参考信号(sounding reference signal，SRS)实现的。网络设备通过测量终端设备发送的SRS，获取上行的信道状态信息。进一步地，在LTE或LTE-A系统中，由于终端设备距离网络设备(例如，基站)的距离不同，远距离的终端设备可能受限于功率。为了保证基站接收到功率足够的SRS，终端设备发送SRS必须保证窄带。此时，为了测量系统总带宽的SRS，只能通过跳频完成系统总宽带的测量。
但是在LTE或LTE-A系统中，跳频是基于小区级配置的带宽进行的，即终端设备的跳频方式都是根据小区统一配置的SRS测量总带宽确定的，仅支持时隙间的跳频。此外，对于非周期的SRS的测量，LTE也是不支持的。
由此可见，现有的通信系统对跳频方式支持不足，灵活性较差。
发明内容
本申请提供一种发送参考信号的方法，能够支持多种跳频方式，从而可以提高跳频的灵活性。
第一方面，本申请提供一种发送探测参考信号SRS的方法，该方法包括：终端设备从网络设备接收SRS资源的第一配置信息，第一配置信息包括SRS资源的重复因子，其中，SRS资源的重复因子是指SRS资源在一个时间单元内被映射在相同子载波且映射在连续的至少一个符号的个数N，N≥1且为整数；终端设备根据第一配置信息，确定SRS资源在第一时间单元内映射的至少一个第一频域资源；终端设备在所述至少一个第一频域资源，向网络设备发送SRS。
结合第一方面，在第一方面的某些实现方式中，终端设备根据第一配置信息，确定SRS资源在第一时间单元内映射的至少一个第一频域资源，包括：终端设备根据第一配置信息和第二配置信息，确定SRS资源在第一时间单元内的至少一个第二频域资源，所述第二频域资源是所述第一频域资源的一部分；以及，终端设备在所述至少一个第一频域资源，向网络设备发送SRS，包括：终端设备在所述至少一个第二频域资源，向网络设备发送所述SRS。
结合第一方面，在第一方面的某些实现方式中，第二配置信息用于指示SRS带宽参数和SRS带宽位置参数，所述SRS带宽参数用于确定所述第二频域位置所占用的带宽，所述SRS带宽位置参数用于确定所述第二频域资源对应的带宽在所述第一频域资源对应的带宽中的位置。
结合第一方面，在第一方面的某些实现方式中，所述第二频域资源对应的带宽是用户级配置参数C SRS所配置的SRS带宽集合中的一个带宽。
结合第一方面，在第一方面的某些实现方式中，第一配置信息还包括SRS资源在一个时间单元内可以占用的符号的个数
Figure PCTCN2018115883-appb-000001
Figure PCTCN2018115883-appb-000002
为正整数，以及，终端设备根据第一配置信息，确定SRS资源在第一时间单元内映射的至少一个第一频域资源，包括：终端设备根据第一配置信息和第三配置信息，确定SRS资源在第一时间单元内映射的至少一个第三频域资源，所述至少一个第三频域资源是一个或多个所述时间单元内的所述至少一个第一频域资源构成的集合的子集；以及，终端设备在所述至少一个第一频域资源，向网络设备发送所述SRS，包括：终端设备在所述至少一个第三频域位置，向网络设备发送所述SRS。
结合第一方面，在第一方面的某些实现方式中，所述第三配置信息用于指示参考符号数量
Figure PCTCN2018115883-appb-000003
所述参考符号数量用于确定SRS资源在第一时间单元内占用的至少一个第一频域资源，其中，所述
Figure PCTCN2018115883-appb-000004
大于所述
Figure PCTCN2018115883-appb-000005
Figure PCTCN2018115883-appb-000006
为正整数。
结合第一方面，在第一方面的某些实现方式中，所述第三配置信息用于配置至少一个第四频域资源，所述第四频域资源的带宽大于所述第一频域资源的带宽，且所述第四频域资源内仅包含一个所述第一频域资源。
结合第一方面，在第一方面的某些实现方式中，SRS资源为非周期SRS资源，待测量的总带宽由K个不重叠的SRS带宽构成，以及，终端设备在所述至少一个第一频域资源，向网络设备发送SRS，包括：若所述
Figure PCTCN2018115883-appb-000007
小于K·N，终端设备在所述至少一个第一频域资源中的每个第一频域资源上发送所述SRS，且不在第一时间单元之外的时间单元上发送所述SRS；或者，若所述
Figure PCTCN2018115883-appb-000008
大于所述K·N，终端设备在SRS资源的前K·N个符号上发送所述SRS。
结合第一方面，在第一方面的某些实现方式中，所述至少一个第一频域资源所占用的带宽的第一频域位置和所述待测量的总带宽的第一频域位置之间的频率间隔不大于第一门限值，和/或所述至少一个第一频域资源中的第二频域位置和所述待测量的总带宽的第二频域位置之间的频率间隔不大于第二门限值，所述第一门限值根据如下参数中的至少一个确定：所述K、所述
Figure PCTCN2018115883-appb-000009
所述N、所述待测量的总带宽和所述用户级SRS带宽，和/或所述第二门限值根据如下参数中的至少一个确定：所述K、所述
Figure PCTCN2018115883-appb-000010
所述N、所述待测量的总带宽和所述用户级SRS带宽。
这里，该至少一个第一频域资源所占用的带宽的第一频域位置，可以是这至少一个第一频域资源所占用的带宽中频率最低或最高或中心的子载波所在的频域位置，或者也可以是与该频率最低或最高或中心的子载波所在频域位置邻近的其它频域位置。该至少一个第一频域资源所占用的带宽的第二频域位置，可以是这至少一个第一频域资源所占用的带宽中最高或最低或中心频率的子载波所在的频域位置，或者也可以是与该频率最高或最低或中心的子载波所在频域位置邻近的其它频域位置。
类似地，待测量的总带宽的第一频域位置可以是该待测量的总带宽中频率最低或最高 或中心的子载波所在的频域位置，或者也可以是与该频率最低或最高或中心的子载波所在频域位置邻近的其它频域位置。待测量的总带宽的第二频域位置可以是该待测量的总带宽中频率最高或最低或中心的子载波所在的频域位置，或者，也可以是与该频率最高或最低或中心的子载波所在频域位置邻近的其它频域位置。
结合第一方面，在第一方面的某些实现方式中，所述至少一个第一频域资源中相邻的两个第一频域资源的第三频域位置之间的频率间隔不大于第三门限值，其中，第三门限值根据如下参数中的至少一个确定：所述K、所述
Figure PCTCN2018115883-appb-000011
所述N、待测量的总带宽和用户级SRS带宽。
在本申请实施例中，第三频域位置可以是第一频域资源占用的带宽的任意一个频域位置。例如，最低频率的子载波所在的频域位置，最高频率的子载波所在的频域位置，中心频率的子载波所在的频域位置，或者任意一个子载波所在的频域位置。以最低频率的子载波所在的频域位置为例，也就是说相邻两个第一频域资源的最低频率的子载波所在的频域位置之间的频率间隔不大于第三门限值。
结合第一方面，在第一方面的某些实现方式中，SRS资源在一个时间单元内的起始符号、SRS资源在一个时间单元内占用的符号的个数
Figure PCTCN2018115883-appb-000012
和SRS资源的重复因子是经过联合编码的。
结合第一方面，在第一方面的某些实现方式中，SRS资源为非周期的SRS资源，所述方法还包括：若K不等于
Figure PCTCN2018115883-appb-000013
则终端设备在第一时间单元内的SRS资源上不发送所述SRS；或者，若K大于
Figure PCTCN2018115883-appb-000014
则终端设备在第一时间单元内的所述SRS资源上不发送所述SRS；或者，若K小于
Figure PCTCN2018115883-appb-000015
则终端设备在第一时间单元内的所述SRS资源上不发送所述SRS。
结合第一方面，在第一方面的某些实现方式中，SRS资源的重复因子的取值包括1,2和4。
结合第一方面，在第一方面的某些实现方式中，第一时间单元为时隙、子帧、迷你时隙或传输时间间隔TTI。
第二方面，本申请提供一种接收探测参考信号SRS的方法，该方法包括：网络设备向终端设备发送SRS资源的第一配置信息，第一配置信息包括SRS资源的重复因子，其中，SRS资源的重复因子是指SRS资源在一个时间单元内被映射在相同子载波且映射在连续的至少一个符号的个数N，N≥1且为整数；网络设备接收终端设备在至少一个第一频域资源发送的SRS，其中，所述至少一个第一频域资源是终端设备根据第一配置信息确定的发送的SRS的频域资源。
结合第二方面，在第二方面的某些实现方式中，该方法还包括：网络设备向终端设备发送第二配置信息，以便于终端设备根据第一配置信息和第二配置信息确定至少一个第二频域资源，第二频域资源是第一频域资源的带宽的一部分；以及，网络设备接收终端设备在至少一个第一频域资源发送的SRS，包括：网络设备接收终端设备在所述至少一个第二频域资源发送的所述SRS。
结合第二方面，在第二方面的某些实现方式中，第二配置信息用于指示SRS带宽参数和SRS带宽位置参数，SRS带宽参数用于确定第二频域资源所占用的带宽，SRS带宽位置参数用于确定第二频域资源对应的带宽在所述第一频域资源对应的带宽中的位置。
结合第二方面，在第二方面的某些实现方式中，第二频域资源对应的带宽是用户级配置参数C SRS所配置的SRS带宽集合中的一个带宽。
结合第二方面，在第二方面的某些实现方式中，第一配置信息还包括SRS资源在一个时间单元内可以占用的符号的个数
Figure PCTCN2018115883-appb-000016
Figure PCTCN2018115883-appb-000017
为正整数，以及，该方法还包括：网络设备向终端设备发送第三配置信息，以便于终端设备根据第一配置信息和第三配置信息确定至少一个第三频域资源，所述至少一个第三频域资源是一个或多个所述时间单元内的所述至少一个第一频域资源构成的集合的子集；以及，网络设备接收终端设备在至少一个第一频域资源发送的SRS，包括：网络设备接收终端设备在所述至少一个第三频域资源发送的所述SRS。
结合第二方面，在第二方面的某些实现方式中，第三配置信息用于指示参考符号数量
Figure PCTCN2018115883-appb-000018
参考符号数量用于确定SRS资源在第一时间单元内占用的至少一个第一频域资源，其中，所述
Figure PCTCN2018115883-appb-000019
大于所述
Figure PCTCN2018115883-appb-000020
且所述
Figure PCTCN2018115883-appb-000021
为正整数。
结合第二方面，在第二方面的某些实现方式中，第三配置信息用于配置至少一个第四频域资源，第四频域资源的带宽大于第一频域资源的带宽，且第四频域资源内仅包含一个第一频域资源。
结合第二方面，在第二方面的某些实现方式中，SRS资源为非周期SRS资源，待测量的总带宽对应K个不重叠的频率资源，所述频率资源的带宽为SRS带宽，以及，网络设备接收终端设备在至少一个第一频域资源发送的SRS，包括：若
Figure PCTCN2018115883-appb-000022
小于K·N，终端设备在所述至少一个第一频域资源中的每个第一频域资源上发送所述SRS，且不在所述第一时间单元之外的时间单元上发送所述SRS；或者，若
Figure PCTCN2018115883-appb-000023
大于K·N，终端设备在SRS资源的前K·N个符号上发送所述SRS。
结合第二方面，在第二方面的某些实现方式中，所述至少一个第一频域资源中的最低第一频域资源和待测量的总带宽的最低频率之间的频率间隔不大于第一门限值，和/或所述至少一个第一频域资源中的最高频域位置和待测量的总带宽的最高频率之间的频率间隔不大于第二门限值，第一门限值和第二门限值根据如下参数中的至少一个确定：K、
Figure PCTCN2018115883-appb-000024
N、待测量的总带宽和用户级SRS带宽。
结合第二方面，在第二方面的某些实现方式中，所述至少一个第一频域资源中相邻的两个第一频域资源之间的频率间隔不大于第三门限值，其中，第三门限值根据如下参数中的至少一个确定：K、
Figure PCTCN2018115883-appb-000025
N、待测量的总带宽和用户级SRS带宽。
结合第二方面，在第二方面的某些实现方式中，SRS资源在一个时间单元内的起始符号、SRS资源在一个时间单元内占用的符号的个数
Figure PCTCN2018115883-appb-000026
和SRS资源的重复因子联合编码。
结合第二方面，在第二方面的某些实现方式中，SRS资源为非周期的SRS资源，所述方法还包括：若K不等于
Figure PCTCN2018115883-appb-000027
网络设备在第一时间单元接收不到所述SRS；或者，若K大于
Figure PCTCN2018115883-appb-000028
网络设备在第一时间单元接收不到所述SRS；或者，若K小于
Figure PCTCN2018115883-appb-000029
网络设备在第一时间单元接收不到所述SRS。
结合第二方面，在第二方面的某些实现方式中，SRS资源的重复因子的取值包括1,2和4。
结合第二方面，在第二方面的某些实现方式中，第一时间单元为时隙、子帧、迷你时隙或传输时间间隔TTI。
第三方面，本申请提供一种终端设备，所述终端设备具有实现上述第一方面的方法设计中的终端设备的功能。这些功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元。
第四方面，本申请提供一种网络设备，所述网络设备具有实现上述第二方面的方法设计中的网络设备的功能。这些功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元。
第五方面，本申请提供一种终端设备，该终端设备包括收发器、处理器和存储器。该处理器用于控制收发器收发信号，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得该终端设备执行上述第一方面中的方法。
第六方面，本申请提供一种网络设备，该网络设备包括收发器、处理器和存储器。该处理器用于控制收发器收发信号，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得该网络设备执行第二方面中的方法。
第七方面，本申请提供一种通信装置，该通信装置可以为上述方法设计中的终端设备，或者为设置在终端设备中的芯片。该通信装置包括：存储器，用于存储计算机可执行程序代码；通信接口，以及处理器，处理器与存储器、通信接口耦合。其中存储器所存储的程序代码包括指令，当处理器执行所述指令时，使通信装置执行上述第一方面或第二方面的任意一种可能的设计中终端设备所执行的方法。
第八方面，本申请提供一种通信装置，该通信装置包括：该通信装置可以为上述方法设计中的网络设备，或者为设置在网络设备中的芯片。该通信装置包括：存储器，用于存储计算机可执行程序代码；通信接口，以及处理器，处理器与存储器、通信接口耦合。其中存储器所存储的程序代码包括指令，当处理器执行所述指令时，使通信装置执行上述第一方面或第二方面的任意一种可能的设计中网络设备所执行的方法。
第九方面，本申请提供计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行上述各方面中的方法。
第十方面，提供了一种计算机可读介质，所述计算机可读介质存储有程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行上述各方面中的方法。
第十一方面，本申请提供了一种芯片系统，该芯片系统包括处理器，用于终端设备实现上述方面中所涉及的功能，例如，例如接收或处理上述方法中所涉及的数据和/或信息。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存终端设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
第十二方面，本申请提供了一种芯片系统，该芯片系统包括处理器，用于支持网络设备实现上述方面中所涉及的功能，例如，例如发送或处理上述方法中所涉及的数据和/或信息。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存网络设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
在本申请实施例中，网络设备通过配置SRS资源的重复因子，可以支持多种跳频方式，例如，可以支持时隙间的跳频、时隙间和时隙内每个符号上的跳频、时隙间和时隙内每两个符号之间的跳频、周期或半持续(semi-persistent)SRS资源和非周期的SRS的跳频等，可以提高跳频的灵活性。
附图说明
图1为适用于本申请实施例的无线通信系统100。
图2是本申请实施例的发送参考信号的示意性交互图。
图3是SRS资源的重复因子的示意图。
图4是终端设备推后发送SRS的示意图。
图5是本申请实施例中确定第二频域资源的示意图。
图6是本申请实施例中确定第三频域资源的示意图。
图7是终端设备发送SRS的一个示意图。
图8是终端设备发送SRS的另一个示意图。
图9是采用本申请实施例的一种配置下的跳频图样。
图10是采用本申请实施例的另一种配置下的跳频图样。
图11是一种配置下的跳频图样。
图12是另一种配置下的跳频图样。
图13是采用本申请实施例的一种配置下的跳频图样。
图14是采用本申请实施例的另一种配置下的跳频图样。
图15是采用本申请实施例的一种配置下的跳频图样。
图16是采用本申请实施例的另一种配置下的跳频图样。
图17为本申请实施例的终端设备500的示意性框图。
图18为本申请实施例的网络设备600的示意性框图。
图19为本申请实施例的终端设备700的示意性结构图。
图20为本申请实施例的网络设备800的示意性结构图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
图1为适用于本申请实施例的无线通信系统100。通信系统100中可以包括至少一个网络设备101，网络设备101与一个或多个终端设备(例如，图1中所示的终端设备102和终端设备103)进行通信。网络设备101可以是基站，也可以是基站与基站控制器集成后的设备，还可以是具有类似通信功能的其它设备。
本申请实施例提及的无线通信系统包括但不限于：全球移动通信(global system of mobile communication，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、长期演进(long term evolution,LTE)系统、先进的长期演进(LTE-A)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、下一代通信系统(例如，第五代(fifth-generation，5G)通信系统)、多种接入系统的融合系统，或演进系统、下一代5G移动通信系统的三大应用场景eMBB，URLLC和eMTC或者将来出现的新的通信系统。
本申请实施例中涉及的网络设备101可以是任意一种具有无线收发功能的设备或可 设置于该设备的芯片，该设备包括但不限于：基站(例如，基站NodeB、演进型基站eNodeB、第五代(5G)通信系统中的网络设备(例如，传输点(transmission point，TP)、发送接收点(transmission reception point，TRP)、基站、小基站设备等)、未来通信系统中的网络设备、无线保真(wireless-fidelity，WiFi)系统中的接入节点、无线中继节点、无线回传节点等。
本申请实施例中所涉及到的终端设备(例如图1中的终端设备102)可以包括各种具有无线通信功能的接入终端、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。例如，可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、机器类型通信(machine type communication，MTC)终端、客户终端设备(customer premise equipment，CPE)、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。本申请的实施例对应用场景不做限定。本申请中将前述终端设备及可设置于前述终端设备的芯片统称为终端设备。
为了便于理解方案，首先对本申请实施例中涉及到的一些概念作简单介绍。
SRS资源，是指由网络设备为终端设备配置的用于发送探测参考信号SRS的资源。在本申请实施例中，终端设备以一个时间单元作为向网络设备发送SRS的单位。网络设备为终端设备配置SRS资源包括频域资源、时域资源和码域资源的配置等。本申请实施例中主要涉及时域资源和频域资源的配置。可选的，SRS资源可以理解为一套SRS资源的配置。
本申请实施例中所说的时间单元可以为子帧、时隙、迷你时隙、传输时间间隔(transmission time interval，TTI)，而第一时间单元是作为一个时间单元的示例。或者，第一时间单元也可以理解为当前需要传输SRS的时间单元。
待测量的总带宽：表示跳频范围，是用户级配置参数C SRS配置的带宽集合中的一个。在本申请中记作b hop。
另外，本申请实施例中所描述的“待测量的总带宽包括K个不重叠的频率资源”和“总跳数K”，实际上是从不同的角度在描述待测量的总带宽。换句话说，经过K个跳数的跳频，才能覆盖测量整个待测量的总带宽，而每一跳对应了这K个不重叠的频率资源中的一个频率资源占用的带宽。并且，这K个不重叠的频率资源中每个频率资源占用的带宽为一个SRS带宽。
用户级配置参数C SRS：用于配置带宽集合，带宽集合中包括多个SRS带宽。
用户级配置带宽B SRS：是所述C SRS配置的带宽集合中的一个SRS带宽。
SRS带宽是指一个符号上用于传输SRS的带宽。
关于这些参数的含义也可以参见LTE中的相关描述。需要注意的是，在LTE中，C SRS是小区级配置参数，而在NR中，C SRS是用户级配置参数。
另外，对本申请实施例中容易混淆的两个概念做简单区分。一个是SRS资源在一个时间内可以占用的符号的数量
Figure PCTCN2018115883-appb-000030
一个是终端设备在一个时间单元内在多少个符号上 向网络设备发送SRS。前者可以认为是网络设备的配置。而终端设备可以采用网络设备的配置发送SRS，此时终端设备发送SRS时使用的符号的个数与
Figure PCTCN2018115883-appb-000031
相等。或者，终端设备也可以仅使用网络设备配置的SRS资源的部分资源(例如，部分频域资源或者部分时域资源)发送SRS。此时，终端设备发送SRS时使用的符号的个数与
Figure PCTCN2018115883-appb-000032
不等，例如，可能小于
Figure PCTCN2018115883-appb-000033
此外，本申请实施例中出现的编号“第一”、“第二”等仅是为了区分不同的描述对象，例如，为了区分不同的频域资源(例如，第一频域资源、第二频域资源)、门限值(例如，第一门限值、第二门限值和第三门限值)或配置信息等，不应对本申请实施例的技术方案构成限定。
参见图2，图2是本申请实施例的发送参考信号的示意性交互图。
本文以探测参考信号(sounding reference signal，SRS)作为示例进行对本申请实施例的技术方案进行说明。本申请的技术方案还可以用于信道测量的其它参考信号传输的场景。
210、网络设备向终端设备发送SRS资源的第一配置信息。终端设备从网络设备接收SRS资源的第一配置信息。
SRS资源的第一配置信息用于指示网络设备为SRS资源配置的时域参数。具体地，这些时域参数包括时隙级的时域参数和符号(symbol)级的时域参数。
对于周期或者半持续(semi-persistent)的SRS资源，时隙级的时域参数包括SRS资源的周期和时域偏移量。
对于非周期的SRS资源，时隙级的时域参数包括SRS资源的时域偏移量，或者时域偏移的最小值。
考虑到NR中支持不同的子载波间隔和较大的载频范围。另外，在不同的载波频率上，信道变化速度也不同。例如，高频时信道变化快，低频时信道变化慢。此外，对于不同的子载波间隔，时隙长度也不同。因此，相同的时隙级周期对应的绝对时间长度也不一样，例如，15KHz的一个时隙的时间长度可以为60KHz的一个时隙的时间长度的4倍。
为了兼顾终端设备对于载波频率和子载波间隔的测量需求，本申请实施例中提出如下三种配置方案(以下分别记作方案A、方案B和方案C)。
方案A
支持较大的周期可配置范围。
在方案A中，网络设备可以按照表1配置SRS资源的时隙级参数。与LTE中仅支持2～320ms的周期配置相比，增加了640个时隙和1280个时隙的配置，网络设备可以对较大的子载波间隔配置较大的时隙级周期。
表1
Figure PCTCN2018115883-appb-000034
Figure PCTCN2018115883-appb-000035
或者，可以不包含周期为2的情况，参见表2。
表2
Figure PCTCN2018115883-appb-000036
或者，某些周期包含多个时间偏移量，参见表3，表3的空余部分不作限定。
表3
Figure PCTCN2018115883-appb-000037
Figure PCTCN2018115883-appb-000038
方案B
不同的子载波间隔对应不同的配置表格，或者一组子载波间隔对应一组配置表格。
例如，15KHz对应2～320个时隙的周期，60KHz对应10～1280个时隙的周期。参见表4和表5。
表4
Figure PCTCN2018115883-appb-000039
表5
Figure PCTCN2018115883-appb-000040
或者，也可以不包含周期为2的情况。或者一个周期下包含多个偏移量。
方案C
不同的载波频率对应不同的配置表格。例如，方案B中的表4和表5分别针对6GHz以下和6GHz以上。或者，不同的载波频率对应不同的周期单位。例如，方案A和方案B的表格以时隙作为周期的单位。而在方案C中，6GHz以下的周期的单位为k＝2 μ个时隙。6GHz载频以上的周期为个时隙k＝2 μ-2。其中，μ为子载波间隔的索引。请参见表6。
表6
Figure PCTCN2018115883-appb-000041
或者，也可以不包含周期为2的情况，或者一个周期下包含多个偏移量。
此外，对非周期的SRS资源，网络设备可以配置或预定义承载DCI的PDCCH或控制资源集合(Control Resource Set，CORESET)和SRS资源的时间间隔或时间间隔的最小值。
为了便于说明，我们将承载DCI的PDCCH或CORESET所在的时隙记作时隙m，将SRS资源所在的时隙记作时隙n，其中，m≤n，m和n为正整数。
具体地，周期的单位可以为如下所列可选的情况。
(1)时隙m和时隙n的时隙级间隔。
(2)承载DCI的PDCCH或CORESET所在符号与时隙n中SRS资源的第1个或最后1个符号之间的符号级间隔。
对于情况(2)，可选的，不需要配置SRS资源的起始符号。
可选的，符号级间隔的可选值具有一定的范围，保证SRS资源映射在可以发送SRS的符号上。例如时隙n的最后6个符号。
(3)时间间隔由网络设备配置，且该时间间隔具有最小值，这个最小值可以预定义。例如，最小值可以预定义为4个时隙。或者，也可以是终端设备根据自身的测量能力向网络设备上报该最小值。可选地，网络设备可以在一些候选值中选择一个时间间隔配置给终端设备。
(4)终端设备可以上报以下至少之一：时间间隔、时间间隔的最小值和时间间隔的候选值。
(5)网络设备为SRS资源配置所述时间间隔。
可选地，网络设备为SRS资源所在的SRS资源集合配置时间间隔。终端设备发送一个SRS资源集合中的某个SRS资源时，采用该SRS资源集合的时间间隔。此时可选地，网络设备可以不需要配置SRS资源内每个SRS资源的时间间隔信息。或者，终端设备根据该SRS资源集合的时间间隔和该SRS资源的时间间隔联合确定DCI和SRS资源传输之 间的时间间隔(例如，两者相加)。SRS资源集合和/或SRS资源的时间间隔可以是根据SRS资源集合的标识或者SRS资源的标识确定的。例如，时间间隔等于标识值或标识值与某个偏移值的和。
终端设备根据承载DCI的PDCCH或CORESET所在的符号或时隙，以及所述时间间隔确定SRS资源的时域资源。例如，终端设备确定m为n与所述时域间隔的和。又例如，终端设备根据承载DCI的PDCCH或CORESET所在的符号与所述时域间隔的和确定SRS资源的时域资源。
可选的，所述DCI可以用于触发至少一个SRS资源，也可以用于触发至少一个SRS资源集合。当用于触发SRS资源集合时，所述DCI中包含用于指示SRS资源集合标识信息或用于指示SRS资源集合的标识。
可选地，上述针对非周期SRS确定时域间隔的方法还可以用于半持续(semi-persistent)的SRS。
半持续SRS是指可以通过DCI或者MAC CE触发激活(activate)传输SRS，并可以通过DCI或者MAC CE触发去激活(deactivate)传输SRS。或者，可以通过DCI或者MAC CE触发激活(activate)传输SRS，在一段时间后去激活。这段时间可以通过协议规定(无需基站配置，本地预存储或预配置)或者可以通过基站配置。或者，还可以在收到配置信息一段时间后激活，通过DCI或者MAC CE触发去激活，或是一段时间后去激活，收到配置信息到激活之间的这段时间可以为协议规定(无需基站配置，本地预存储或预配置)或者可以通过基站配置，激活到去激活之间的这段时间也可以为协议规定(无需基站配置，本地预存储或预配置)或者可以通过基站配置。
与非周期SRS确定时域间隔的方法类似，基站配置或预定义第一时间间隔和/或第二时间间隔。第一时间间隔为激活半持续SRS资源的DCI所在的PDCCH或CORESET或MAC CE所在的PDSCH与所述半持续SRS资源的时间间隔或时间间隔的最小值，例如终端设备可以在所述时间间隔后的所述半持续SRS的第一个传输机会开始传输，所述传输机会是根据半持续SRS的时域配置信息确定的。第二时间间隔为去激活半持续SRS资源的DCI所在的PDCCH或CORESET或MAC CE所在的PDSCH与停止传输所述半持续SRS资源或最后一次传输所述SRS资源的时间间隔，例如终端设备可以在所述时间间隔后停止传输所述半持续SRS。
可选的，具体时间间隔的配置方法，上报方法和非周期的SRS资源相同。
可选的，所述DCI或MAC CE可以用于激活或去激活触发至少一个半持续SRS资源，也可以用于激活或去激活至少一个半持续SRS资源集合。当用于激活或去激活半持续SRS资源集合时，所述DCI或MAC CE中包含用于指示半持续SRS资源集合标识信息或用于指示SRS资源集合的标识，半持续SRS资源集合在所有半持续SRS资源集合或所有SRS资源集合中的标识，或通过比特图的形式支持。比特图中每一个比特对应一个半持续SRS资源集合，比特图的长度不小于配置的半持续SRS资源集合的数量，或等于半持续SRS资源集合数量或最大数量。
可选的，上述方案中表格中的部分行或部分列可以单独使用，也可以至少一部分行或至少一部分列作为完整配置表格的一部分使用，这里不做限定。
下面介绍SRS资源的符号级的时域参数。
在本申请实施例中，SRS资源的符号级的时域参数主要包括如下：
(1)SRS资源在一个时隙内的起始符号。
由于SRS一般配置在一个时隙内的最后M个符号上，因此，SRS资源在一个时隙内的起始符号位于一个时隙内最后的M个符号上。例如，SRS资源在一个时隙内的起始符号位于这个时隙的最后6个符号上，则SRS资源在这个时隙内的起始符号的位置为最后6个符号。
(2)SRS资源的符号数。
SRS资源的符号数，也即SRS资源在一个时隙内占用的符号的个数(下文记作
Figure PCTCN2018115883-appb-000042
)，
Figure PCTCN2018115883-appb-000043
为正整数。
(3)SRS资源的重复因子。
在本申请实施例中，SRS资源的重复因子，是指SRS资源在一个时隙内映射至相同的子载波且映射至连续的至少一个符号的个数N，N≥1且为整数。
为了描述上的简洁，以下将SRS资源的重复因子记作Lr。也即，Lr＝N。
在本申请实施例中，重复因子也可以称作重复长度。
参见图3，图3是SRS资源的重复长度的示意图。图3中以SRS资源的符号数等于4作为示例。如图3中的(A)，SRS资源的重复长度等于1。图3中的(B)所示，SRS资源的重复长度等于2。图3中的(C)所示，SRS资源的重复长度等于4。
可以理解的是，以上所述的SRS资源在一个时隙内的起始符号、SRS资源的符号数和SRS资源的重复长度之间满足一些约束关系。例如，SRS资源在一个时隙内的起始符号决定了SRS资源的符号数的最大值。例如，若SRS资源在一个时隙内的起始位置为这个时隙内的最后一个符号时，则SRS资源的符号数只能等于1。再例如，SRS资源的符号数决定了SRS资源的重复长度。换句话说，SRS资源的重复长度不会超过SRS资源的符号数。
若将一个时隙内包括的符号的个数记作N，且时隙内的符号的索引为0～N-1。N为正整数。则这些约束关系可以表示为：
(1)SRS的起始符号的最大值不大于N-M。
(2)SRS资源的符号数与SRS资源的起始符号的和不大于N-1。
可选地，SRS资源的符号数可以等于1,2或4。
可选地，SRS资源的重复因子可以等于1,2或4。
进一步地，考虑到这些约束关系，本申请提出将SRS资源的以上三个符号级的时域参数进行联合编码，以降低资源开销。
可以理解的是，SRS资源的起始符号、SRS资源的符号数和SRS资源的重复因子可以由网络设备进行联合编码后，通过一个信令发送给终端设备。例如，这个信令可以是本申请实施例中的第一配置信息。下面以M＝6作为示例给出联合编码的表7。
表7
Figure PCTCN2018115883-appb-000044
Figure PCTCN2018115883-appb-000045
作为一个可选方案，SRS资源的重复长度也可以单独配置，参见下面的表8。
表8
Figure PCTCN2018115883-appb-000046
此外，再将SRS资源的重复长度配置如表9。
表9
SRS资源的重复长度配置 SRS资源的重复长度Lr
00 1
01 2
10 4
11 reserved
可选的，上述方案中表格中的部分行或部分列可以单独使用，也可以至少一部分行或至少一部分列作为完整配置表格的一部分使用，这里不做限定。
220、终端设备根据SRS资源的时域配置信息，确定SRS资源在第一时间单元内映射的是少一个第一频域位置。
对于非周期的SRS资源，SRS资源的时域配置信息可以通过下行控制信息(Downlink Control Information，DCI)携带。
若终端设备接收下行控制信息的时隙为时隙n，则终端设备可以在时隙n+k向网络设备发送SRS。其中，k为SRS资源的时域偏移量，且n和k为正整数。
若时隙n+k上配置的用于发送SRS的符号无法发送SRS，例如，SRS资源与PUCCH或PUSCH配置在同一个符号上，或者时隙类型指示(Slot Format Indicator，SFI)SRS资源为下行资源或者未知资源，则终端设备在时隙n+k+1的相同位置的符号上发送SRS。参见图4，图4是终端设备推后发送SRS的示意图。
进一步地，若时隙n+k+1上配置的用于发送SRS的符号继续无法发送SRS，则终端设备在时隙n+k+2上发送SRS，以此类推。
但是，为了防止多次推后发送SRS，网络设备可以预配置发送SRS的最大时域频域量t(t>0且为整数)。即若时隙n上DCI触发的SRS不会在时隙n+t之后的时隙发送。
其中，时域偏移量t可以是由网络设备的高层信令和/或DCI进行配置。或者，t也可以是预定义的。
下文对终端设备根据第一配置信息，确定SRS资源在第一时间单元内映射的至少一个第一频域资源的过程进行说明。
为了便于理解，以下我们以一个时间单元为一个时隙作为示例进行描述。
具体地，终端设备根据SRS资源的第一配置信息和当前时隙，确定发送SRS的计数n SRS，再根据n SRS确定SRS资源在当前时隙内映射的频域资源(本申请称作第一频域资源,第一频域资源的带宽为所述SRS带宽，由B SRS配置)。
下面针对周期(包括半持续)的SRS资源和非周期的SRS资源分别进行说明。
1、周期或者半持续的SRS资源。
对于周期或者半持续的SRS资源，n SRS表示一个无线帧周期内可用于SRS在连续符号相同子载波上传输的位置的计数。n SRS可以根据如下参数计算确定：系统帧号、时隙号、符号号(也即，符号的索引)、SRS资源的起始符号、SRS资源的符号数和SRS资源的重复因子。
具体地，n SRS可以根据如下公式(1)计算确定：
Figure PCTCN2018115883-appb-000047
其中，公式(1)中的参数的物理意义如下：
Figure PCTCN2018115883-appb-000048
表示SRS资源的符号数；n表示系统帧号；
Figure PCTCN2018115883-appb-000049
表示时隙号；n s表示帧内的时隙号；T SRS表示SRS资源的周期；n symbol表示时隙内符号；
Figure PCTCN2018115883-appb-000050
表示SRS资源在一个时隙内的起始符号(以下简称为SRS资源的起始符号)；Lr表示SRS资源的重复因子。符号
Figure PCTCN2018115883-appb-000051
表示向下取整。
其中
Figure PCTCN2018115883-appb-000052
表示时隙内符号与SRS资源的起始符号相差的符号数，可以作为单独的一个变量，也可以由其它的表达式获得，例如，根据子帧内或帧内的符号编号、SRS资源的起始符号、子帧号确定等。
其中
Figure PCTCN2018115883-appb-000053
表示一个帧周期内当前时隙在所有可用于发送所述SRS的时隙中的序号，也可以由其他等效的表达式计算得到。
Figure PCTCN2018115883-appb-000054
表示一个帧周期内截止至当前时隙所有可用户发送所述SRS的符号的数量和，也可以由其他等效的表达式计算得到。
可选的，公式(1)中的n SRS可以是一种情况下的计算方法，不排除还有其他情况下根据其他公式计算所述n SRS。
2、非周期的SRS资源。
(1)若非周期的SRS资源仅支持时隙内的跳频。
在这种情况下，n SRS表示本次触发的SRS资源在连续符号相同子载波上传输的位置的计数。n SRS可以根据如下参数计算确定：SRS资源在一个时隙内的起始符号、符号号和SRS资源的重复因子(记作L r)。
具体地，n SRS可以根据如下公式(2)计算确定：
Figure PCTCN2018115883-appb-000055
可选地，SRS传输的符号数为SRS资源的符号数、总跳数与重复因子的乘积这两者中的最小值。因此，当所述SRS资源的符号数
Figure PCTCN2018115883-appb-000056
小于总跳数与重复因子的乘积K·N 时，仅发送SRS资源的符号数次
Figure PCTCN2018115883-appb-000057
的SRS，即不完成所有跳的传输。或者当所述SRS资源的符号数
Figure PCTCN2018115883-appb-000058
大于总跳数与重复因子的乘积K·N时，仅在SRS资源的K·N个符号进行SRS传输，SRS资源中剩余的符号不进行所述SRS的传输。可选的，可以用于其它上行信道(例如，PUSCH)的传输，或者不进行传输，或者进行其它SRS的传输。
其中
Figure PCTCN2018115883-appb-000059
表示时隙内符号与SRS起始符号相差的符号数，可以作为单独的一个变量，也可以由其它表达式获得。例如，根据子帧内或帧内的符号编号、SRS的起始符号、子帧号确定等。这里所说的时隙是根据前述步骤210中介绍的时间间隔以及承载用于触发SRS传输的DCI的PDCCH或CORESET所在的资源确定的。
例如，将这个约束条件表达为下面的公式(3)：
Figure PCTCN2018115883-appb-000060
或者，也可以将这个约束条件表达为下面的公式(4)：
Figure PCTCN2018115883-appb-000061
(2)若非周期的SRS资源支持时隙内跳频和时隙间跳频。
在这种情况下，n SRS表示本次触发的SRS资源在连续符号相同子载波上传输的位置的计数。n SRS可以根据如下参数计算确定：SRS资源的起始符号、SRS资源的符号数，SRS资源的重复因子，符号号，触发DCI和当前时隙的时间差值和时域偏移量。这里所说的时域偏移量也就是上文步骤210中的时间间隔。
具体地，n SRS可以根据如下公式(5)计算确定：
Figure PCTCN2018115883-appb-000062
这里，n SRS的最大值为总跳数。
其中
Figure PCTCN2018115883-appb-000063
表示时隙内符号与SRS起始符号相差的符号数，可以作为单独的一个变量，也可以由其他表达式获得。例如，根据子帧内或帧内的符号编号、SRS的起始符号、子帧号确定等。
Figure PCTCN2018115883-appb-000064
为触发DCI和当前时隙的时间差值。
Figure PCTCN2018115883-appb-000065
表示第一次传输所述非周期SRS到当前时隙的时隙差，可以由其他等效方法计算获得。
Figure PCTCN2018115883-appb-000066
表示第一次传输所述非周期SRS到当前时隙之前的所有可以用于传输所述非周期SRS的符号的数量，也可以由其他等效的表达式计算得到。
终端设备确定了n SRS之后，就可以根据n SRS确定SRS资源在当前时隙内映射的至少一个频域资源(本申请中称作第一频域资源)。
230、终端设备在确定的至少一个第一频域资源，向网络设备发送SRS。
在步骤220中，终端设备确定了SRS资源在当前时隙内映射的至少一个第一频域资源后，在步骤230中，终端设备在这至少一个第一频域资源，向网络设备发送SRS。
本领域技术人员应该理解，终端设备通过至少一个第一频域资源向网络设备发送SRS的过程，即是跳频的过程。
在本申请实施例中，网络设备通过配置SRS资源的重复因子，可以支持多种跳频方式，例如，可以支持时隙间的跳频、时隙间和时隙内每个符号上的跳频、时隙间和时隙内每两个符号之间的跳频、非周期的SRS的跳频等，可以提高跳频的灵活性。
在上述方法200中，终端设备在确定的至少一个第一频域资源向网络设备发送SRS。
可选地，终端设备可以在该至少一个第一频域资源中的每个第一频域资源上发送SRS。或者，为了降低对待测量的总带宽的测量时间，本申请进一步提出如下一些跳频方式，使得终端设备可以在该至少一个第一频域资源的部分资源块(resource block，RB)发送SRS。
方式1
终端设备根据第一配置信息和第二配置信息，确定SRS资源在第一时间单元内映射的至少一个第二频域资源，其中，第二频域资源是第一频域资源的一部分。终端设备在该至少一个第二频域资源向网络设备发送SRS。
在方式1中，网络设备除了配置上文描述的第一配置信息所指示的时隙级时域参数和符号级时域之外，网络设备还配置了第二配置信息。终端设备基于第一配置信息和第二配置信息，可以在至少一个第一频域资源的基础上，确定出至少一个第二频域资源。其中，一个第二频域资源是一个第一频域资源的一部分。
可选地，第二配置信息用于指示SRS带宽参数和SRS带宽位置参数。
需要说明的是，SRS带宽位置参数用于确定第二频域资源占用的带宽。SRS带宽位置参数用于确定第二频域资源占用的带宽在第一频域资源占用的带宽中的位置。
下文，将SRS带宽参数记作b subband，将SRS带宽位置参数记作
Figure PCTCN2018115883-appb-000067
可以理解的是，b subband实际上是配置了终端设备发送SRS时实际采用的带宽大小。b subband的取值范围为B SRS≤b subband≤3，而b subband所配置的带宽的具体取值可以通过查询SRS带宽配置表获得。
Figure PCTCN2018115883-appb-000068
用于配置终端设备发送SRS时的实际带宽在SRS带宽中的位置。
Figure PCTCN2018115883-appb-000069
的取值范围为
Figure PCTCN2018115883-appb-000070
若假定一个用户级SRS带宽最多可以包含k个b subband对应的带宽，则
Figure PCTCN2018115883-appb-000071
的具体取值应该为
Figure PCTCN2018115883-appb-000072
k为正整数。
下面给出适用于本申请实施例的一个配置表格的示例。参见表10。
表10
Figure PCTCN2018115883-appb-000073
Figure PCTCN2018115883-appb-000074
Figure PCTCN2018115883-appb-000075
下面结合图5给出一个示例。
参见图5，5是确定第二频域资源的示意图。
在图5中，网络设备配置的用户级配置参数C SRS＝24，B SRS＝1。若网络设备配置的b subband＝2，
Figure PCTCN2018115883-appb-000076
则终端设备仅在用户级SRS带宽的一个子带上发送SRS。这个用户级SRS带宽的子带即为本申请实施例中所说的第二频域资源。
第二频域资源在频域上占用的资源块RB的数量表示为m SRS,subband，m SRS,subband可以通过查询SRS带宽配置表格获得。
可以理解的是，图5中仅以第二频域资源为一个作为示例，在第二频域资源为至少两个时，这至少两个第二频域资源中的起始频域位置可以根据如下公式(6)计算确定：
Figure PCTCN2018115883-appb-000077
可选地，在方式1中，和b subband和B SRS的关系可以互换。即，B SRS用于指示终端设备发送SRS时实际采用的带宽大小。b subband用于指示用户级SRS带宽。
方式2
终端设备根据第一配置信息和第三配置信息，确定SRS资源在第一时间单元内映射的至少一个第三频域资源，该至少一个第三频域资源构成的集合是该至少一个第一频域资源构成的集合的子集。终端设备在该至少一个第三频域资源向网络设备发送SRS。
在方式2中，网络设备除了配置上文描述的第一配置信息之外，还配置了第三配置信息。终端设备基于第一配置信息和第三配置信息，可以在至少一个第一频域资源的基础上，确定出至少一个第三频域资源。其中，该至少一个第三频域资源构成的集合是一个或多个时间单元内的至少一个第一频域资源构成的集合的子集。
在方式2中，第三配置信息可以用于指示参考符号数量
Figure PCTCN2018115883-appb-000078
在本申请中，参考符号数量
Figure PCTCN2018115883-appb-000079
用于确定所述SRS资源在第一时间单元(例如，一个时隙)内占用的至少一个第一频域资源，其中，
Figure PCTCN2018115883-appb-000080
且为整数。
需要说明的是，参考符号数量
Figure PCTCN2018115883-appb-000081
的取值范围大于或等于SRS资源的符号数
Figure PCTCN2018115883-appb-000082
具体地，在方式2中，对于周期或半持续的SRS资源，终端设备可以根据如下公式(7)计算n SRS:
Figure PCTCN2018115883-appb-000083
本领域技术人员可以理解的是，公式(7)与上文的公式(1)相比，计算n SRS的参数中，参数
Figure PCTCN2018115883-appb-000084
变为
Figure PCTCN2018115883-appb-000085
其余相同。由于
Figure PCTCN2018115883-appb-000086
是SRS资源在一个时隙内可以占用的符号的个数，因为，在
Figure PCTCN2018115883-appb-000087
的取值大于
Figure PCTCN2018115883-appb-000088
的取值的情况下，计算得到的n SRS的值也将不同。
换句话说，根据公式(7)，计算了
Figure PCTCN2018115883-appb-000089
个符号的跳频，但是终端设备实际上仅在
Figure PCTCN2018115883-appb-000090
个符号上发送SRS。也就是说，有
Figure PCTCN2018115883-appb-000091
个符号的SRS不发送。因此，终端设备可以实现仅在部分第一频域资源上发送SRS。而这里所说的部分第一频域资源即是本申请中所说的至少一个第三频域资源。也就是说，该至少一个第三频域资源构成的集合实际上是该至少一个第一频域资源构成的集合的子集。
下面结合图6给出一个示例。
参见图6，图6是确定第三频域资源的示意图。如图6所示，若网络设备配置
Figure PCTCN2018115883-appb-000092
对于符号数等于4的SRS资源，一个时隙内有4个第一频域位置。这时终端设备会在每个第一频域资源上发送SRS。若网络设备配置
Figure PCTCN2018115883-appb-000093
而终端设备根据一个时隙内有
Figure PCTCN2018115883-appb-000094
个符号跳频进行计算，但是实际仅在
Figure PCTCN2018115883-appb-000095
个符号上发送SRS，终端设备也可以实现仅在部分RB上发送SRS。
应理解，对于仅支持时隙内跳频的非周期的SRS资源，方式2不适用。对于支持时隙内跳频和时隙间跳频的非周期的SRS资源，方式2是适用的。例如，计算n SRS的公式可以如公式(8)所示：
Figure PCTCN2018115883-appb-000096
在本申请实施例中，对于非周期的SRS资源，若仅支持时隙内的跳频，当总跳数K大于SRS资源的符号数时，若仅发送前
Figure PCTCN2018115883-appb-000097
跳，而前
Figure PCTCN2018115883-appb-000098
可能不能均匀地分布在待测量的总带宽中，因此，会使得待测量的总带宽测量不准。
需要说明的是，在本申请实施例中，将待测量的总带宽对应的总跳数记作K，
Figure PCTCN2018115883-appb-000099
换句话说，待测量的总带宽包括K个不重叠的频率资源，该K个不重叠的频率资源中的每个频率资源的带宽为SRS带宽。
下面结合图7对总跳数大于SRS资源的符号数时，导致待测量的总带宽测量不准的情况进行说明。
假定采用表11中的带宽配置参数。
表11
Figure PCTCN2018115883-appb-000100
例如，如果网络设备配置了b hop＝0，B SRS＝3，
Figure PCTCN2018115883-appb-000101
n RRC＝0，则终端设备对待测量的总带宽进行测量的4跳可能如图7中所示。参见图7，图7是终端设备发送SRS的一个示意图。从图7中可以看出，终端设备经过4跳之后，跳频图样仅分布在整个待测量的总带宽的前3/4。
又例如，如果网络设备配置了b hop＝0，B SRS＝3，
Figure PCTCN2018115883-appb-000102
n RRC＝0，则终端设备对待测量的总带宽进行测量的2跳可能如图8中所示的情况。参见图8，图8是终端设备发送SRS的另一个示意图。类似，终端设备经过2跳的测量之后，跳频图样仅分布在整个待测量的总带宽的前1/2。
以上图7和图8中所示的这种情况，对于跳频图样未涉及的较高频率的频段，只能通过外插获取信道的测量结果，因此准确度较低。
因此，针对非周期SRS资源发送SRS出现的这个问题，本申请提出一些解决的方案，以使跳频图样尽可能均匀地覆盖待测量的总带宽，从而提高测量的准确度。
方案1
至少一个第一频域资源所占用的带宽的第一频域位置和待测量的总带宽的第一频域位置之间的频率间隔不大于第一门限值，和/或该至少一个第一频域资源所占用的带宽的第二频域位置和待测量的总带宽的第二频域位置之间的频率间隔不大于第二门限值。下文将该至少一个第一频域资源与待测量的总带宽之间满足的关系称作约束条件1。
这里，该至少一个第一频域资源所占用的带宽的第一频域位置，可以是这至少一个第一频域资源所占用的带宽中频率最低或最高或中心的子载波所在的频域位置，或者也可以是与该频率最低或最高或中心的子载波所在频域位置邻近的其它频域位置。该至少一个第一频域资源所占用的带宽的第二频域位置，可以是这至少一个第一频域资源所占用的带宽中最高或最低或中心频率的子载波所在的频域位置，或者也可以是与该频率最高或最低或中心的子载波所在频域位置邻近的其它频域位置。
类似地，待测量的总带宽的第一频域位置可以是该待测量的总带宽中频率最低或最高或中心的子载波所在的频域位置，或者也可以是与该频率最低或最高或中心的子载波所在频域位置邻近的其它频域位置。待测量的总带宽的第二频域位置可以是该待测量的总带宽中频率最高或最低或中心的子载波所在的频域位置，或者，也可以是与该频率最高或最低或中心的子载波所在频域位置邻近的其它频域位置。
其中，第一门限值可以根据如下参数中的至少一个确定：K、N、
Figure PCTCN2018115883-appb-000103
待测量的总带宽和用户级SRS带宽，和/或第二门限值也可以根据如下参数中的至少一个确定：K、N、
Figure PCTCN2018115883-appb-000104
待测量的总带宽和用户级SRS带宽。
可以理解的是，在方案1中的设计思路中，应使得至少一个第一频域资源所占用的带宽的第一频域位置和待测量的总带宽的第一频域位置之间的频率间隔不大于第一门限，和/或该至少一个第一频域资源所占用的带宽的第二频域位置与待测量的总带宽的第二频域位置之间的频率带宽不大于第二门限。
换句话说，约束条件1会使得该至少一个第一频域资源不会仅仅分布在待测量的总带宽的一部分，而是尽量覆盖了更大的带宽范围，从而可以提高测量的准确度。
具体地，有如下几种方式可以使得确定出的该至少一个第一频域资源与待测量的总带宽之间满足方案1中描述的约束条件1。
方式A
在方式A中，我们假定完成整个待测量的总带宽的覆盖测量，共需要进行K次跳频，
Figure PCTCN2018115883-appb-000105
这K次跳频对应跳频树形结构最底层共有
Figure PCTCN2018115883-appb-000106
个节点。将这K个节点平均分为
Figure PCTCN2018115883-appb-000107
段，其中每一段间隔
Figure PCTCN2018115883-appb-000108
个节点，第i段位于节点
Figure PCTCN2018115883-appb-000109
在
Figure PCTCN2018115883-appb-000110
次跳频过程中，设置计数器flag(i)和跳频次数计数器NUM i，
Figure PCTCN2018115883-appb-000111
初始化flag(i)＝0,NUM i＝1。
针对第K次跳频，按照如下步骤计算NUM k。
(1)按照公式(9)计算
Figure PCTCN2018115883-appb-000112
对应的节点(以下记作节点A)位置
Figure PCTCN2018115883-appb-000113
Figure PCTCN2018115883-appb-000114
(2)假设节点A位于第i段，即
Figure PCTCN2018115883-appb-000115
若flag(i)＝0，则认为跳频位置位于节点A，进入步骤(3)若flag(i)＝1，则NUM k-1＝NUM k+1，返回步骤(1)重新计算跳频位置。
(3)将flag(i)置为1，结束。
另外，在方案1中，发送SRS的子带的起始位置是根据如下公式(10)计算的：
Figure PCTCN2018115883-appb-000116
下面对根据方案1的方法确定的跳频图样进行举例说明。
首先假定采用表12所示的带宽配置。
表12
Figure PCTCN2018115883-appb-000117
如果网络设备配置了b hop＝0，B SRS＝3，
Figure PCTCN2018115883-appb-000118
n RRC＝0，根据方案1的方法可以计算得到NUM 0＝1，NUM 1＝1，NUM 2＝1，NUM 3＝3。跳频图样参见图9所示，图9是本申请一种配置下的跳频图样。
如果网络设备配置了b hop＝0，B SRS＝3，
Figure PCTCN2018115883-appb-000119
n RRC＝0，根据方案1的方法可以计算得到NUM 0＝1，NUM 1＝2。跳频图样参见图10所示，图10是本申请另一种配置下的跳频图样。
从图9和图10可以看出，对于
Figure PCTCN2018115883-appb-000120
次跳频而言，根据方案1提供的方法，可以保证终端设备发送SRS的
Figure PCTCN2018115883-appb-000121
个频域位置分别位于均匀间隔的
Figure PCTCN2018115883-appb-000122
个频段内。跳频带宽的最低频率的子载波与SRS资源的最低子载波之间的频率间隔不大于一个门限值(即，第一门限)。跳频带宽的最高频率的子载波与SRS资源的最高频率的子载波之间的频率间隔不大于一个门限值(为了和第一门限值区分，这里记作第二门限值)。
可以理解的是，第一门限值和第二门限值可以相等或者不相等。例如，第一门限值和第二门限值可以均等于
Figure PCTCN2018115883-appb-000123
即，待测量的总带宽中最低频率的子载波与SRS资源的最低频率的子载波之间的频率间隔不大于
Figure PCTCN2018115883-appb-000124
个用户级SRS带宽。或者，第一门限值和第二门限值也可以各自设置。本申请实施例不作限定。
方案2
至少一个第一频域资源中的相邻两个第一频域资源的第三频域位置之间的频率间隔不大于第三门限值，其中，第三门限值根据如下参数中的至少一个确定：K、
Figure PCTCN2018115883-appb-000125
待测量的总带宽和用户级SRS带宽。
这里，第三频域位置可以是第一频域资源所占用的带宽中最低或最高或中心频率的子载波所在的频域位置，或者，也可以是第一频域资源所占用的带宽中最高或最低或中心频率的子载波所在的频域位置。或者，也可以是最低频率与最高频率之间的任意一个频率的子载波所在额频域位置。
在方案2中，我们继续假定完成整个待测量的总带宽的覆盖测量，共需要进行K次跳频，
Figure PCTCN2018115883-appb-000126
对于非周期的SRS资源，假设一个时隙内需要进行
Figure PCTCN2018115883-appb-000127
次跳频。在这个待测量的总带宽内对应设计
Figure PCTCN2018115883-appb-000128
个SRS映射子载波位置fk,
Figure PCTCN2018115883-appb-000129
频域上相邻SRS资源映射的子载波之间的频率间隔记作Δf k，其中，
Figure PCTCN2018115883-appb-000130
在一种可选的方案中，频率间隔Δf k是根据一个时隙内的跳频次数
Figure PCTCN2018115883-appb-000131
和总跳数 K确定的，并应使得
Figure PCTCN2018115883-appb-000132
频率间距Δf k不大于第三门限值。
例如，第三门限值可以为用户级带宽B SRS，即|Δf i-Δf j|≤B SRS。
方案2可以保证
Figure PCTCN2018115883-appb-000133
次跳频的频域位置均匀分布在待测量的总带宽中，终端设备发送SRS的两个相邻的频域资源的第三频域位置之间的频率间隔基本均等。
可选地，可以根据如下公式(11)至(13)计算SRS资源映射的起始子载波：
Figure PCTCN2018115883-appb-000134
其中，
Figure PCTCN2018115883-appb-000135
Figure PCTCN2018115883-appb-000136
或者，也可以根据如下公式(14)和(15)计算SRS资源映射的起始子载波：
Figure PCTCN2018115883-appb-000137
Figure PCTCN2018115883-appb-000138
应理解，方案2中计算SRS资源映射的子载波的频域位置的公式不限于上面这些公式，也可以采用其它形式的公式。
下面结合图11和图12，对根据方案2确定的跳频图样进行举例说明。
首先假定采用表13所示的带宽配置。
表13
Figure PCTCN2018115883-appb-000139
例如，如果网络设备配置了b hop＝0，B SRS＝3，
Figure PCTCN2018115883-appb-000140
n RRC＝0，若采用公式(11)-(13)进行计算，确定的跳频图样如图11所示。图11是一种配置下的跳频图样的示例。若采用公式(14)和(15)进行计算，确定的跳频图样如图12所示。图12是一种配置下的跳频图样的另一个示例。
从图11和图12中可以看出，按照方案2提供的方案确定跳频图样，经过4次跳频之后，终端设备发送SRS的频域位置在整个带宽内分布更加均匀，因此可以提高信道测量的准确性。
又例如，如果网络设备配置了b hop＝0，B SRS＝3，
Figure PCTCN2018115883-appb-000141
n RRC＝0，若采用公式(11)-(13)进行计算，确定的跳频图样如图13所示。图13是一种配置下的跳频图样的示例。若采用公式(14)和(15)进行计算，确定的跳频图样如图14所示。图14是本申请一种配置下的跳频图样的另一个示例。
方式3
对于符号数等于
Figure PCTCN2018115883-appb-000142
的SRS资源，网络设备作如下默认配置：
(1)总跳数K不等于
Figure PCTCN2018115883-appb-000143
或者
(2)总跳数K大于
Figure PCTCN2018115883-appb-000144
或者
(3)总跳数K小于
Figure PCTCN2018115883-appb-000145
换句话说，终端设备不认为会收到或假设收不到网络设备发送的用于指示K不等于
Figure PCTCN2018115883-appb-000146
的指示信息；或者，
终端设备不认为会收到或假设收不到网络设备发送的用于指示K大于
Figure PCTCN2018115883-appb-000147
的指示信息；或者，
终端设备不认为会收到或者假设不会收到网络设备发送的用于指示K小于
Figure PCTCN2018115883-appb-000148
的指示信息。
基于默认配置，如果K不等于
Figure PCTCN2018115883-appb-000149
或K大于
Figure PCTCN2018115883-appb-000150
或K小于
Figure PCTCN2018115883-appb-000151
则终端设备不在当前时隙配置的SRS资源上发送SRS。
可以理解的是，通过方式3，可以实现仅测量待测量的总带宽的部分RB，从而可以降低测量总带宽的时间。
方式4
终端设备根据如下公式(16)、(17)和(18)确定跳频图样，实现在部分RB上发送SRS。
Figure PCTCN2018115883-appb-000152
Figure PCTCN2018115883-appb-000153
Figure PCTCN2018115883-appb-000154
在方式4中为了实现在部分RB上均匀跳频，网络设备配置了参数b minhop。b minhop的默认设置可以等于B SRS。即是说，如果网络设备配置了b minhop的取值，则终端设备采用b minhop配置的值。如果网络设备没有配置b minhop的取值，b minhop取B SRS。例如，可以根据C SRS配置的带宽集合确定第四频域资源的带宽。根据公式(17)可以看出，仅在SRS树状带宽结构中的第b hop+1～b minhop层跳频，而在第b minhop+1～B SRS层上不跳频。从而可以仅在每个第四频域资源所占用的带宽的部分RB上发送SRS。这里所说的部分RB对应的带宽 为B SRS确定的第一频域资源的带宽。
下面结合图15和图16对根据方式4的方法确定的跳频图样进行举例说明。
参见图15，图15是采用本申请实施例的一种配置下的跳频图样。如图15所示，C SRS＝24，b minhop与B SRS均配置为2，则第四频域资源的带宽和第一频域资源的带宽相同，因此可以通过跳频的方式在待测量的总带宽范围内的所有RB上发送SRS。
参见图16，图16是采用本申请实施例的另一种配置下的跳频图样。如图16所示，C SRS＝24，b minhop均配置为1，B SRS配置为2，则第四频域资源的带宽大于第一频域资源的带宽，例如本实施例中第四频域资源的带宽为第一频域资源带宽的2倍，则根据公式(17)确定相邻两次SRS传输的第四频域资源不同，即跳频，但第四频域资源内实际发送SRS的第一频域资源的相对位置不变，即不跳频。因此可以通过跳频的方式在待测量的带宽范围内的所有第四频域资源内的一个第一频域资源带宽上发送SRS，即在待测量的带宽范围内的部分RB上发送SRS，还保证发送SRS的RB分块均分分布于待测量的带宽范围内。
可选的，公式(16)和(18)还可以有其他不同的计算方法或表达形式，本发明不做限定。
可选的，公式(17)中b的取值范围记作0～b max,例如b max＝B SRS，也可以是其他值。则公式(17)的限定条件可以做如下等效变化：
Figure PCTCN2018115883-appb-000155
或者，
Figure PCTCN2018115883-appb-000156
或者在限定条件中进一步限定所述b的取值范围。或者也可以是其它等效的表达方式，本发明不做限定。
注意，本文中出现的符号
Figure PCTCN2018115883-appb-000157
与符号
Figure PCTCN2018115883-appb-000158
表示相同的含义。
预先定义还可以是通信协议中规定的。
本申请实施例中的指示信息或配置信息可以是通过一条信令传输的，也可以是通过多条信令传输的。所述信令可以是承载在RRC信令中，或MAC CE信令中，或DCI中。所述由多条信令传输可以是指示信息或配置信息分为多个部分，每个部分由一个信令传输。也可以是先由一个信令配置指示信息或配置信息的一个候选集合，再由另一个信令指示候选集合中的一个信息。也可以是先由一个信令配置指示信息或配置信息的一个候选集合，再由第二个信令指示候选集合中的一个子集，再由第三个信令指示候选集合子集中的一个信息。可选的，所述指示信息或配置信息还可以通过组合上述多种方法进行配置。
以上结合图1至图16对本申请实施例的发送参考信号的方法作了详细说明。下面结合图17至图20对本申请实施例的终端设备和网络设备进行说明。
图17为本申请实施例的终端设备500的示意性框图。如图17所示，终端设备500包括接收单元510、处理单元520和发送单元530。其中，
接收单元510，用于从网络设备接收探测参考信号SRS资源的第一配置信息，第一配置信息包括SRS资源的重复因子，其中，SRS资源的重复因子是指SRS资源在一个时间单元内映射至相同子载波且映射至连续的至少一个符号的个数N，N≥1且为整数；
处理单元520，用于根据第一配置信息，确定SRS资源在第一时间单元内映射的至少一个第一频域资源；
发送单元530，用于在所述至少一个第一频域资源，向网络设备发送SRS。
本申请实施例的终端设备500中的各单元和上述其它操作或功能分别为了实现发送参考信号的方法中由终端设备执行的相应流程，此处不再赘述。
图18为本申请实施例的网络设备600的示意性框图。如图18所示，网络设备600包括发送单元610和接收单元620。其中，
发送单元610，用于向终端设备发送SRS资源的第一配置信息，第一配置信息包括SRS资源的重复因子，其中，SRS资源的重复因子是指SRS资源在一个时间单元内映射至相同子载波且映射至连续的至少一个符号的个数N，N≥1且为整数；
接收单元620，用于接收终端设备在至少一个第一频域资源发送的SRS，所述至少一个第一频域资源是终端设备根据第一配置信息确定的发送SRS的频域位置。
本申请实施例的网络设备600中的各单元和上述其它操作或功能分别为了实现发送参考信号的方法中由网络设备执行的相应流程。为了简洁，此处不再赘述。
图19为本申请实施例的终端设备700的示意性结构图。如图19所示，终端设备700包括：一个或多个处理器701，一个或多个存储器702，一个或多个收发器703。处理器701用于控制收发器703收发信号，存储器702用于存储计算机程序，处理器701用于从存储器702中调用并运行计算机程序，使得终端设备700执行发送参考信号的方法。为了简洁，此处不再赘述。
图20为本申请实施例的网络设备800的示意性结构图。如图20所示，网络设备800包括：一个或多个处理器801，一个或多个存储器802，一个或多个收发器803。处理器801用于控制收发器803收发信号，存储器802用于存储计算机程序，处理器801用于从存储器802中调用并运行计算机程序，使得网络设备800执行发送参考信号的方法。为了简洁，此处不再赘述。
此外，本申请还提供一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行上述发送参考信号的方法中由终端设备执行的相应流程和/或操作。
此外，本申请还提供一种计算机可读介质，所述计算机可读介质存储有程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行上述发送参考信号的中由终端设备执行的相应流程和/或操作。
此外，本申请还提供了一种芯片系统，该芯片系统包括处理器，用于终端设备实现上述发送参考信号的方法中所涉及的功能。例如，例如接收或处理上述方法中所涉及的数据和/或信息。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存终端设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包括芯片和其它分立器件。
此外，本申请还提供了一种芯片系统，该芯片系统包括处理器，用于支持网络设备实现上述发送参考信号的方法中所涉及的功能。例如，例如发送或处理上述方法中所涉及的数据和/或信息。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存网络设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包括芯片和 其它分立器件。
以上实施例中，处理器可以为中央处理器(central processing unit，CPU)、微处理器、特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本申请方案程序执行的集成电路等。例如，处理器可以包括数字信号处理器设备、微处理器设备、模数转换器、数模转换器等。处理器可以根据这些设备各自的功能而在这些设备之间分配移动设备的控制和信号处理的功能。此外，处理器可以包括操作一个或多个软件程序的功能，软件程序可以存储在存储器中。
处理器的所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
存储器可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备。也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。
可选的，上述的存储器与存储器可以是物理上相互独立的单元，或者，存储器也可以和处理器集成在一起。
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申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
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的技术方案的目的。
另外，在本申请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。
结合前面的描述，本领域的技术人员可以意识到，本文实施例的方法，可以通过硬件 (例如，逻辑电路)，或者软件，或者硬件与软件的结合来实现。这些方法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申请的范围。
当上述功能通过软件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。在这种情况下，本申请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)执行本申请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(read-only memory，ROM)、随机存取存储器(random access memory，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，仅为本申请的具体实施方式，但本申请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申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (44)

  1. 一种发送探测参考信号SRS的方法，其特征在于，包括：
    终端设备从网络设备接收SRS资源的第一配置信息，所述第一配置信息包括所述SRS资源的重复因子，其中，所述SRS资源的重复因子是指所述SRS资源在一个时间单元内被映射在相同子载波且映射在连续的至少一个符号的个数N，N≥1且为整数；
    所述终端设备根据所述第一配置信息，确定所述SRS资源在第一时间单元内映射的至少一个第一频域资源；
    所述终端设备在所述至少一个第一频域资源，向所述网络设备发送SRS。
  2. 根据权利要求1所述的方法，其特征在于，所述终端设备根据所述第一配置信息，确定所述SRS资源在第一时间单元内映射的至少一个第一频域资源，包括：
    所述终端设备根据所述第一配置信息和第二配置信息，确定所述SRS资源在所述第一时间单元内的至少一个第二频域资源，所述第二频域资源是所述第一频域资源的一部分；
    以及，所述终端设备在所述至少一个第一频域资源，向所述网络设备发送SRS，包括：
    所述终端设备在所述至少一个第二频域资源，向所述网络设备发送所述SRS。
  3. 根据权利要求2所述的方法，其特征在于，所述第二配置信息用于指示SRS带宽参数和SRS带宽位置参数，所述SRS带宽参数用于确定所述第二频域资源所占用的带宽，所述SRS带宽位置参数用于确定所述第二频域资源占用的带宽在所述第一频域资源占用的带宽中的位置。
  4. 根据权利要求1所述的方法，其特征在于，所述第一配置信息还包括所述SRS资源在一个时间单元内占用的符号的个数
    Figure PCTCN2018115883-appb-100001
    为正整数，
    以及，所述终端设备根据所述第一配置信息，确定所述SRS资源在所述第一时间单元内映射的至少一个第一频域资源，包括：
    所述终端设备根据所述第一配置信息和第三配置信息，确定所述SRS资源在所述第一时间单元内映射的至少一个第三频域资源，所述至少一个第三频域资源构成的集合是一个或多个所述时间单元内的所述至少一个第一频域资源构成的集合的子集；
    以及，所述终端设备在所述至少一个第一频域资源，向所述网络设备发送SRS，包括：
    所述终端设备在所述至少一个第三频域资源，向所述网络设备发送所述SRS。
  5. 根据权利要求4所述的方法，其特征在于，所述第三配置信息用于指示参考符号数量
    Figure PCTCN2018115883-appb-100002
    所述参考符号数量用于确定所述SRS资源在所述第一时间单元内占用的至少一个第一频域资源，其中，所述
    Figure PCTCN2018115883-appb-100003
    大于所述
    Figure PCTCN2018115883-appb-100004
    且所述
    Figure PCTCN2018115883-appb-100005
    为正整数。
  6. 根据权利要求4所述的方法，其特征在于，所述第三配置信息用于配置至少一个第四频域资源，所述第四频域资源的带宽大于所述第一频域资源的带宽，且所述第四频域资源内仅包含一个所述第一频域资源。
  7. 根据权利要求1至4中任一项所述的方法，其特征在于，所述SRS资源为非周期SRS资源，待测量的总带宽由K个不重叠的SRS带宽组成，
    以及，所述终端设备在所述至少一个第一频域资源，向所述网络设备发送SRS，包括：
    若所述
    Figure PCTCN2018115883-appb-100006
    小于K·N，所述终端设备仅在所述第一时间单元内的所述至少一个第一频域资源中的每个第一频域资源上发送所述SRS；或者，
    若所述
    Figure PCTCN2018115883-appb-100007
    大于所述K·N，所述终端设备仅在所述SRS资源的前K·N个符号上发送所述SRS。
  8. 根据权利要求6或7所述的方法，其特征在于，所述至少一个第一频域资源所占用的带宽的第一频域位置和所述待测量的总带宽的第一频域位置之间的频率间隔不大于第一门限值，和/或所述至少一个第一频域资源所占用的带宽的第二频域位置和所述待测量的总带宽的第二频域位置之间的频率间隔不大于第二门限值，其中，所述第一门限值根据如下参数中的至少一个确定：所述K、所述
    Figure PCTCN2018115883-appb-100008
    所述N、所述待测量的总带宽和所述用户级SRS带宽，和/或所述第二门限值根据如下参数中的至少一个确定：所述K、所述
    Figure PCTCN2018115883-appb-100009
    所述N、所述待测量的总带宽和所述用户级SRS带宽。
  9. 根据权利要求6至8中任一项所述的方法，其特征在于，所述至少一个第一频域资源中相邻的两个第一频域资源的第三频域位置之间的频率间隔不大于第三门限值，其中，所述第三门限值根据如下参数中的至少一个确定：所述K、所述
    Figure PCTCN2018115883-appb-100010
    所述N、所述待测量的总带宽和所述用户级SRS带宽。
  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SRS资源在一个时间单元内的起始符号、所述SRS资源在一个时间单元内占用的符号的个数
    Figure PCTCN2018115883-appb-100011
    和所述SRS资源的重复因子是经过联合编码的。
  11. 根据权利要求1至5中任一项所述的方法，其特征在于，所述SRS资源为非周期的SRS资源，所述方法还包括：
    若所述K不等于所述
    Figure PCTCN2018115883-appb-100012
    则所述终端设备在所述第一时间单元内的所述SRS资源上不发送所述SRS；或者，
    若所述K大于所述
    Figure PCTCN2018115883-appb-100013
    则所述终端设备在所述第一时间单元内的所述SRS资源上不发送所述SRS；或者，
    若所述K小于所述
    Figure PCTCN2018115883-appb-100014
    则所述终端设备在所述第一时间单元内的所述SRS资源上不发送所述SRS。
  12. 一种接收探测参考信号SRS的方法，其特征在于，包括：
    网络设备向终端设备发送SRS资源的第一配置信息，所述第一配置信息包括所述SRS资源的重复因子，其中，所述SRS资源的重复因子是指所述SRS资源在一个时间单元内被映射在相同子载波且映射在连续的至少一个符号的个数N，N≥1且为整数；
    所述网络设备接收所述终端设备在至少一个第一频域资源发送的SRS，其中，所述至少一个第一频域资源是所述终端设备根据所述第一配置信息确定的发送的SRS的频域资源。
  13. 根据权利要求12所述的方法，其特征在于，所述方法还包括：
    所述网络设备向所述终端设备发送第二配置信息，以便于所述终端设备根据所述第一配置信息和所述第二配置信息确定至少一个第二频域资源，所述第二频域资源是所述第一频域资源的一部分；
    以及，所述网络设备接收所述终端设备在至少一个第一频域资源发送的SRS，包括：
    所述网络设备接收所述终端设备在所述至少一个第二频域资源发送的所述SRS。
  14. 根据权利要求13所述的方法，其特征在于，所述第二配置信息用于指示SRS带宽参数和SRS带宽位置参数，所述SRS带宽参数用于确定所述第二频域资源所占用的带宽，所述SRS带宽位置参数用于确定所述第二频域资源对应的带宽在所述第一频域资源对应的带宽中的位置。
  15. 根据权利要求12所述的方法，其特征在于，所述第一配置信息还包括所述SRS资源在一个时间单元内占用的符号的个数
    Figure PCTCN2018115883-appb-100015
    为正整数，
    以及，所述方法还包括：
    所述网络设备向所述终端设备发送第三配置信息，以便于所述终端设备根据所述第一配置信息和所述第三配置信息确定至少一个第三频域资源，所述至少一个第三频域资源是一个或多个所述时间单元内的所述至少一个第一频域资源构成的集合的子集；
    以及，所述网络设备接收所述终端设备在至少一个第一频域资源发送的SRS，包括：
    所述网络设备接收所述终端设备在所述至少一个第三频域资源发送的所述SRS。
  16. 根据权利要求15所述的方法，其特征在于，所述第三配置信息用于指示参考符号数量
    Figure PCTCN2018115883-appb-100016
    所述参考符号数量用于确定所述SRS资源在所述第一时间单元内占用的至少一个第一频域资源，其中，所述
    Figure PCTCN2018115883-appb-100017
    大于所述
    Figure PCTCN2018115883-appb-100018
    所述
    Figure PCTCN2018115883-appb-100019
    为正整数。
  17. 根据权利要求15所述的方法，其特征在于，所述第三配置信息用于配置至少一个第四频域资源，所述第四频域资源的带宽大于所述第一频域资源的带宽，且所述第四频域资源内仅包含一个所述第一频域资源。
  18. 根据权利要求12至15中任一项所述的方法，其特征在于，所述SRS资源为非周期SRS资源，待测量的总带宽由K个不重叠的SRS带宽构成，
    以及，所述网络设备接收所述终端设备在至少一个第一频域资源发送的SRS，包括：
    若所述
    Figure PCTCN2018115883-appb-100020
    小于K·N，所述网络设备接收所述终端设备在所述第一时间单元内的所述至少一个第一频域资源中的每个第一频域资源上发送所述SRS；或者，
    若所述
    Figure PCTCN2018115883-appb-100021
    大于所述K·N，所述网络设备接收所述终端设备在所述第一时间单元内的所述SRS资源的前K·N个符号上发送所述SRS。
  19. 根据权利要求17或18所述的方法，其特征在于，所述至少一个第一频域资源所占用的带宽的第一频域位置和所述待测量的总带宽的第一频域位置之间的频率间隔不大于第一门限值，和/或所述至少一个第一频域资源所占用的带宽的第二频域位置和所述待测量的总带宽的第二频域位置之间的频率间隔不大于第二门限值，所述第一门限值根据如下参数中的至少一个确定：所述K、所述
    Figure PCTCN2018115883-appb-100022
    所述N、所述待测量的总带宽和所述用户级SRS带宽，和/或和所述第二门限值根据如下参数中的至少一个确定：所述K、所述
    Figure PCTCN2018115883-appb-100023
    所述N、所述待测量的总带宽和所述用户级SRS带宽。
  20. 根据权利要求17至19中任一项所述的方法，其特征在于，所述至少一个第一频域资源中相邻的两个第一频域资源的第三频域位置之间的频率间隔不大于第三门限值，其中，所述第三门限值根据如下参数中的至少一个确定：所述K、所述
    Figure PCTCN2018115883-appb-100024
    所述N、所述待测量的总带宽和所述用户级SRS带宽。
  21. 根据权利要求12至20中任一项所述的方法，其特征在于，所述SRS资源在一个时间单元内的起始符号、所述SRS资源在一个时间单元内占用的符号的个数
    Figure PCTCN2018115883-appb-100025
    和所述SRS资源的重复因子经过联合编码后发送给所述终端设备的。
  22. 根据权利要求12至15中任一项所述的方法，其特征在于，所述SRS资源为非周期的SRS资源，所述方法还包括：
    若所述K不等于所述
    Figure PCTCN2018115883-appb-100026
    所述网络设备在所述第一时间单元内的所述SRS资源上接收不到所述SRS；或者，
    若所述K大于所述
    Figure PCTCN2018115883-appb-100027
    所述网络设备在所述第一时间单元内的所述SRS资源上接收不到所述SRS；或者，
    若所述K小于所述
    Figure PCTCN2018115883-appb-100028
    所述网络设备在所述第一时间单元内的所述SRS资源接收不到所述SRS。
  23. 一种发送探测信号SRS的装置，其特征在于，包括：
    接收单元，用于从网络设备接收SRS资源的第一配置信息，所述第一配置信息包括所述SRS资源的重复因子，其中，所述SRS资源的重复因子是指所述SRS资源在一个时间单元内被映射在相同子载波且映射在连续的至少一个符号的个数N，N≥1且为整数；
    处理单元，用于根据所述第一配置信息，确定所述SRS资源在第一时间单元内映射的至少一个第一频域资源；
    发送单元，用于在所述至少一个第一频域资源，向所述网络设备发送SRS。
  24. 根据权利要求23所述的装置，其特征在于，所述处理单元还用于根据所述第一配置信息和第二配置信息，确定所述SRS资源在所述第一时间单元内的至少一个第二频域资源，所述第二频域资源是所述第一频域资源的一部分；
    所述发送单元具体用于在在所述至少一个第二频域资源，向所述网络设备发送所述SRS。
  25. 根据权利要求24所述的装置，其特征在于，所述第二配置信息用于指示SRS带宽参数和SRS带宽位置参数，所述SRS带宽参数用于确定所述第二频域位置所占用的带宽，所述SRS带宽位置参数用于确定所述第二频域资源对应的带宽在所述第一频域资源对应的带宽中的位置。
  26. 根据权利要求23所述的装置，其特征在于，所述第一配置信息还包括所述SRS资源在一个时间单元内占用的符号的个数
    Figure PCTCN2018115883-appb-100029
    为正整数，
    以及，所述处理单元具体用于根据所述第一配置信息和第三配置信息，确定所述SRS资源在所述第一时间单元内映射的至少一个第三频域资源，所述至少一个第三频域资源是一个或多个所述时间单元内的所述至少一个第一频域资源构成的集合的子集；
    以及，所述发送单元具体用于在所述至少一个第三频域资源，向所述网络设备发送所述SRS。
  27. 根据权利要求26所述的装置，其特征在于，所述第三配置信息用于指示参考符号数量
    Figure PCTCN2018115883-appb-100030
    所述参考符号数量用于确定所述SRS资源在所述第一时间单元内占用的至少一个第一频域资源，其中，所述
    Figure PCTCN2018115883-appb-100031
    大于所述
    Figure PCTCN2018115883-appb-100032
    所述
    Figure PCTCN2018115883-appb-100033
    为正整数。
  28. 根据权利要求26所述的装置，其特征在于，所述第三配置信息用于配置至少一个第四频域资源，所述第四频域资源的带宽大于所述第一频域资源的带宽，且所述第四频域资源内仅包含一个所述第一频域资源。
  29. 根据权利要求23至26中任一项所述的装置，其特征在于，所述SRS资源为非 周期SRS资源，待测量的总带宽由K个不重叠的频率资源组成，所述频率资源的带宽为SRS带宽，以及，所述发送单元具体用于：
    若所述
    Figure PCTCN2018115883-appb-100034
    小于K·N，在所述第一时间单元内的所述至少一个第一频域资源中的每个第一频域资源上发送所述SRS；或者，
    若所述
    Figure PCTCN2018115883-appb-100035
    大于所述K·N，在所述第一时间单元内的所述SRS资源的前K·N个符号上发送所述SRS。
  30. 根据权利要求28或29所述的装置，其特征在于，所述至少一个第一频域资源所占用的带宽的第一频域位置和所述待测量的总带宽的第一频域位置之间的频率间隔不大于第一门限值，和/或所述至少一个第一频域资源中的第二频域位置和所述待测量的总带宽的第二频域位置之间的频率间隔不大于第二门限值，其中，所述第一门限值根据如下参数中的至少一个确定：所述K、所述
    Figure PCTCN2018115883-appb-100036
    所述N、所述待测量的总带宽和所述用户级SRS带宽，和/或所述第二门限值根据如下参数中的至少一个确定：所述K、所述
    Figure PCTCN2018115883-appb-100037
    所述N、所述待测量的总带宽和所述用户级SRS带宽。
  31. 根据权利要求28至30中任一项所述的装置，其特征在于，所述至少一个第一频域资源中相邻的两个第一频域资源的第三频域位置之间的频率间隔不大于第三门限值，其中，所述第三门限值根据如下参数中的至少一个确定：所述K、所述
    Figure PCTCN2018115883-appb-100038
    所述N、所述待测量的总带宽和所述用户级SRS带宽。
  32. 根据权利要求23至31中任一项所述的装置，其特征在于，所述SRS资源在一个时间单元内的起始符号、所述SRS资源在一个时间单元内占用的符号的个数
    Figure PCTCN2018115883-appb-100039
    和所述SRS资源的重复因子是经过联合编码的。
  33. 根据权利要求23至27中任一项所述的装置，其特征在于，所述SRS资源为非周期的SRS资源，所述发送单元还用于：
    若所述K不等于所述
    Figure PCTCN2018115883-appb-100040
    在所述第一时间单元内的所述SRS资源上不发送所述SRS；或者，
    若所述K大于所述
    Figure PCTCN2018115883-appb-100041
    在所述第一时间单元内的所述SRS资源上不发送所述SRS；或者，
    若所述K小于所述
    Figure PCTCN2018115883-appb-100042
    在所述第一时间单元内的所述SRS资源上不发送所述SRS。
  34. 一种接收探测参考信号SRS的装置，其特征在于，包括：
    发送单元，用于向终端设备发送SRS资源的第一配置信息，所述第一配置信息包括所述SRS资源的重复因子，其中，所述SRS资源的重复因子是指所述SRS资源在一个时间单元内被映射在相同子载波且映射在连续的至少一个符号的个数N，N≥1且为整数；
    接收单元，用于接收所述终端设备在至少一个第一频域资源发送的SRS，其中，所述至少一个第一频域资源是所述终端设备根据所述第一配置信息确定的发送的SRS的频域资源。
  35. 根据权利要求34所述的装置，其特征在于，所述发送单元还用于：
    向所述终端设备发送第二配置信息，以便于所述终端设备根据所述第一配置信息和所述第二配置信息确定至少一个第二频域资源，所述第二频域资源是所述第一频域资源的带宽的一部分；
    以及，所述接收单元具体用于接收所述终端设备在所述至少一个第二频域资源发送的 所述SRS。
  36. 根据权利要求35所述的装置，其特征在于，所述第二配置信息用于指示SRS带宽参数和SRS带宽位置参数，所述SRS带宽参数用于确定所述第二频域资源所占用的带宽，所述SRS带宽位置参数用于确定所述第二频域资源对应的带宽在所述第一频域资源对应的带宽中的位置。
  37. 根据权利要求34所述的装置，其特征在于，所述第一配置信息还包括所述SRS资源在一个时间单元内占用的符号的个数
    Figure PCTCN2018115883-appb-100043
    为正整数，
    以及，所述发送单元还用于向所述终端设备发送第三配置信息，以便于所述终端设备根据所述第一配置信息和所述第三配置信息确定至少一个第三频域资源，所述至少一个第三频域资源是一个或多个所述时间单元内的所述至少一个第一频域资源构成的集合的子集；
    以及，所述接收单元具体用于接收所述终端设备在所述至少一个第三频域资源发送的所述SRS。
  38. 根据权利要求37所述的装置，其特征在于，所述第三配置信息用于指示参考符号数量
    Figure PCTCN2018115883-appb-100044
    所述参考符号数量用于确定所述SRS资源在所述第一时间单元内占用的至少一个第一频域资源，其中，所述
    Figure PCTCN2018115883-appb-100045
    大于所述
    Figure PCTCN2018115883-appb-100046
    所述
    Figure PCTCN2018115883-appb-100047
    为正整数。
  39. 根据权利要求37所述的装置，其特征在于，所述第三配置信息用于配置至少一个第四频域资源，所述第四频域资源的带宽大于所述第一频域资源的带宽，且所述第四频域资源内仅包含一个所述第一频域资源。
  40. 根据权利要求34至38中任一项所述的装置，其特征在于，所述SRS资源为非周期SRS资源，待测量的总带宽是由K个不重叠的SRS带宽构成，
    以及，所述接收单元用于：
    若所述
    Figure PCTCN2018115883-appb-100048
    小于K·N，接收所述终端设备在所述第一时间单元内的所述至少一个第一频域资源中的每个第一频域资源上发送所述SRS；或者，
    若所述
    Figure PCTCN2018115883-appb-100049
    大于所述K·N，接收所述终端设备在所述第一时间单元内的所述SRS资源的前K·N个符号上发送所述SRS。
  41. 根据权利要求39或40所述的装置，其特征在于，所述至少一个第一频域资源所占用的带宽的第一频域位置和所述待测量的总带宽的第一频域位置之间的频率间隔不大于第一门限值，和/或所述至少一个第一频域资源所占用的带宽的第二频域位置和所述待测量的总带宽的第二频域位置之间的频率间隔不大于第二门限值，其中，所述第一门限值根据如下参数中的至少一个确定：所述K、所述
    Figure PCTCN2018115883-appb-100050
    所述N、所述待测量的总带宽和所述用户级SRS带宽，和/或所述第二门限值根据如下参数中的至少一个确定：所述K、所述
    Figure PCTCN2018115883-appb-100051
    所述N、所述待测量的总带宽和所述用户级SRS带宽。
  42. 根据权利要求39至41中任一项所述的装置，其特征在于，所述至少一个第一频域资源中相邻的两个第一频域资源的第三频域位置之间的频率间隔不大于第三门限值，其中，所述第三门限值根据如下参数中的至少一个确定：所述K、所述
    Figure PCTCN2018115883-appb-100052
    所述N、所述待测量的总带宽和所述用户级SRS带宽。
  43. 根据权利要求34至42中任一项所述的装置，其特征在于，所述SRS资源在一个时间单元内的起始符号、所述SRS资源在一个时间单元内占用的符号的个数
    Figure PCTCN2018115883-appb-100053
    和所 述SRS资源的重复因子联合编码。
  44. 根据权利要求34至38中任一项所述的装置，其特征在于，所述SRS资源为非周期的SRS资源，所述接收单元还用于：
    若所述K不等于所述
    Figure PCTCN2018115883-appb-100054
    在所述第一时间单元内的所述SRS资源上接收不到所述SRS；或者，
    若所述K大于所述
    Figure PCTCN2018115883-appb-100055
    在所述第一时间单元内的所述SRS资源上接收不到所述SRS；或者，
    若所述K小于所述
    Figure PCTCN2018115883-appb-100056
    在所述第一时间单元内的所述SRS资源上接收不到所述SRS。
PCT/CN2018/115883 2017-11-17 2018-11-16 发送探测参考信号srs的方法和装置 WO2019096244A1 (zh)

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