WO2017173881A1 - 参考信号的传输方法、设备和系统 - Google Patents

参考信号的传输方法、设备和系统 Download PDF

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Publication number
WO2017173881A1
WO2017173881A1 PCT/CN2017/072916 CN2017072916W WO2017173881A1 WO 2017173881 A1 WO2017173881 A1 WO 2017173881A1 CN 2017072916 W CN2017072916 W CN 2017072916W WO 2017173881 A1 WO2017173881 A1 WO 2017173881A1
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WIPO (PCT)
Prior art keywords
frequency domain
reference signal
user equipment
domain resource
resource group
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PCT/CN2017/072916
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English (en)
French (fr)
Inventor
张屹
张弛
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201610867115.XA external-priority patent/CN107276734B/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP23209320.3A priority Critical patent/EP4346175A3/en
Priority to EP21170630.4A priority patent/EP3940984B1/en
Priority to JP2018552864A priority patent/JP6951361B2/ja
Priority to EP17778546.6A priority patent/EP3429117B1/en
Publication of WO2017173881A1 publication Critical patent/WO2017173881A1/zh
Priority to US16/154,557 priority patent/US11128502B2/en
Priority to US17/446,791 priority patent/US11881976B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • Embodiments of the present invention relate to the field of communications, and more particularly, to a method, apparatus, and system for transmitting reference signals.
  • 5G 5th Generation
  • NR New Radio/RAT
  • the International Telecommunications Union (ITU) defines three types of services in the 5G expectation and requirements, namely, Enhanced Mobile Broadband (eMBB) services, and low-latency and high-reliability communications (Ultra-reliable and Low).
  • eMBB Enhanced Mobile Broadband
  • URLLc Latency Communications
  • mMTC Massive Machine Type Communications
  • the URLLc service expects a very short delay, and the minimum is only 1ms. Because the URLLc service is urgent, the data needs to be allocated immediately when there is data arrival, and there is basically no waiting. On the other hand, the URLLc service has high reliability requirements, and generally requires an ultra-high reliability of 99.999%.
  • an uplink multi-user multiple-input multiple-output (UL MU-MIMO) system in Long Term Evolution (LTE) allows The same time-frequency resource defines a mutually orthogonal Demodulation Reference Signal (DMRS) in Code Division Multiplex (CDM) mode to implement UL MU-MIMO paired user equipment (User Equipment, Reuse of reference signal (RS) resources between UEs.
  • DMRS Demodulation Reference Signal
  • CDM Code Division Multiplex
  • RS reference signal
  • DL MU-MIMO Downlink Multi-User Multiple-Input Multiple-Output
  • the embodiment of the invention provides a method, a device and a system for transmitting a reference signal, which can implement multiplexing of multi-user RS resources.
  • a method for transmitting a reference signal comprising: determining, by a first user equipment, a bearer At least one base sequence corresponding to at least one frequency domain resource group for transmitting the reference signal on a symbol of the reference signal, wherein one of the frequency domain resource groups corresponds to one of the base sequences, and each frequency domain resource group includes a sub- The plurality of subcarriers having the same number of carriers; the user equipment generates the reference signal according to the at least one base sequence, and maps to a time-frequency resource whose time domain is the symbol and the frequency domain is the at least one frequency domain resource group.
  • the specific implementation is: if the first user equipment and the second user equipment generate a reference signal sequence in the third frequency domain resource group, the first user equipment is The cyclic shift used by the second user equipment to generate the reference signal sequence according to the third base sequence is different; wherein the third frequency domain resource group is one of the at least one frequency domain resource group, and the third base sequence is the first The base sequence corresponding to the tri-frequency domain resource group.
  • the first user equipment determines, by using a symbol of the bearer reference signal, at least one frequency domain resource for transmitting the reference signal
  • the at least one base sequence corresponding to the group is specifically implemented: the first user equipment determines a first base sequence corresponding to the first frequency domain resource group, and determines a second base sequence corresponding to the second frequency domain resource group; the first user equipment Generating the reference signal according to the at least one base sequence, and mapping to a time-frequency domain for transmitting the reference signal, and the frequency domain is the time-frequency resource of the at least one frequency domain resource group, where the first user equipment is configured according to the Generating, by the first base sequence, a first reference signal sequence of the reference signal, and mapping the time domain to the time-frequency resource of the first frequency domain resource group; the first user equipment according to the second The base sequence generates a second reference signal sequence of the reference signal, and maps to a time-frequency resource in which the time domain is the
  • the first user equipment in conjunction with the second possible implementation of the first aspect, in a third possible implementation, the first user equipment generates the first reference signal sequence and the second reference signal sequence uses the same cyclic shift.
  • the specific implementation is: the cyclic shift is that the base station notifies the first user equipment; or the cyclic shift is the first Determining, by the user equipment, one or more of user equipment specific configuration parameters, time domain specific configuration parameters, cell specific configuration parameters, and frequency domain specific configuration parameters of the first user equipment, according to configuration parameters, and The configuration parameters cannot include only cell-specific configuration parameters or frequency domain-specific configuration parameters.
  • the specific relationship between the frequency domain resource group and the base sequence is pre-agreed by the base station and the first user equipment; or The corresponding relationship between the frequency domain resource group and the base sequence is sent by the base station to the first user equipment.
  • a user equipment is proposed for performing the method of the first aspect or a possible implementation of any of the aspects of the first aspect.
  • the user equipment may comprise means for performing the method of the first aspect or any of the possible implementations of the first aspect.
  • another user equipment comprising a memory and a processor for storing instructions for executing instructions stored by the memory, and performing execution of the instructions stored in the memory such that the processor Performing the method of the first aspect or any possible implementation of the first aspect.
  • a computer readable storage medium for storing a computer program, the computer program comprising instructions for performing the method of the first aspect or any of the possible implementations of the first aspect.
  • a method for transmitting a reference signal includes: receiving, by a user equipment, downlink control signaling sent by a base station, where the downlink control signaling is used to indicate that the user equipment sends the signal on a symbol of a bearer reference signal. a frequency domain resource group of the reference signal; the user equipment generates a reference signal sequence and maps to a time-frequency resource whose time domain is the symbol and the frequency domain is the frequency domain resource group.
  • the method further includes: determining, by the user equipment, the frequency domain resource group according to the frequency domain resource and the frequency domain comb occupied by the user equipment, the frequency domain resource
  • the group includes a plurality of evenly spaced combs (one comb is one subcarrier).
  • the frequency domain comb is used to extract every N subcarriers from a continuous frequency domain resource One subcarrier, a plurality of evenly spaced combs (subcarriers) are obtained.
  • the comb structure may also take M consecutive every N subcarriers Subcarriers, wherein the intervals between the plurality of M subcarriers are equal.
  • a user equipment is presented for performing the method of a possible implementation of the fifth aspect or the fifth aspect.
  • the user equipment may comprise means for performing the method of any of the possible implementations of the fifth or fifth aspect.
  • a seventh aspect another user equipment is presented, comprising a memory and a processor for storing instructions for executing instructions stored by the memory, and performing execution of instructions stored in the memory such that the processor The method of any of the possible implementations of the fifth aspect or the fifth aspect is performed.
  • a computer readable storage medium for storing a computer program, the computer program comprising instructions for performing the method of any of the fifth or fifth aspect of the possible implementation.
  • another method for transmitting a reference signal includes: determining, by the user equipment, a frequency domain resource that carries a reference signal of the user equipment, where the frequency domain resource is equally spaced subcarriers in the frequency domain, and the reference signal Demodulation for the data channel; the user equipment sends a reference signal to the base station on the frequency domain resource, or the user equipment receives the reference signal sent by the base station on the frequency domain resource.
  • the determining, by the user equipment, the frequency domain resource that carries the reference signal of the user equipment includes: determining, by the user equipment, the bearer according to the first parameter a frequency domain resource of a reference signal of the user equipment, where the first parameter includes at least one of the following parameters: the user equipment specific parameter, a time domain specific parameter, a cell specific parameter, a frequency domain specific parameter, and a base station
  • the first configuration parameter, the first configuration parameter from the base station is configuration information that is sent by the base station to the user equipment, and the configuration information is used by the user equipment to determine a frequency domain resource that carries a reference signal of the user equipment.
  • the first configuration parameter of the base station includes at least one of the following parameters: an antenna port, The frequency domain start position of the transmission comb, the transmission comb index, and the subcarrier set index.
  • the user equipment determines, according to the second parameter, a sequence of the reference signal a cyclic shift and/or orthogonal code used, wherein the second parameter comprises at least one of the following parameters: user equipment specific parameters, time domain specific parameters, cell specific parameters, frequency domain specific parameters, from a base station a second configuration parameter, where the second configuration parameter from the base station is configuration information that is sent by the base station to the user equipment, where the configuration information is used by the user equipment to determine a cyclic shift used by the sequence of the reference signals. / or orthogonal code.
  • the second configuration parameter from the base station includes at least one of the following parameters Species: antenna port, frequency domain start position of transmission comb, transmission comb index, subcarrier set index, cyclic shift identifier, orthogonal code knowledge.
  • a user equipment is provided for performing the method of a possible implementation of the ninth aspect or the ninth aspect.
  • another user equipment comprising a memory for storing instructions for executing instructions stored in the memory, and a processor for causing the processing to be performed by the instructions stored in the memory
  • the method of any of the possible implementations of the ninth aspect or the ninth aspect is performed.
  • a twelfth aspect a computer readable storage medium for storing a computer program comprising instructions for performing the method of any of the ninth or ninth aspect of the ninth aspect.
  • a method for transmitting a reference signal includes: the base station transmitting, to the user equipment, downlink control information, where the downlink control signaling is used to indicate that the user equipment sends the reference on a symbol of the bearer reference signal. a frequency domain resource group of the signal; the base station receives the reference signal sent by the user equipment on the frequency domain resource group.
  • the downlink control signaling carries an index of a frequency domain comb, where an index of the frequency domain comb is used to combine frequency domain resources of the user equipment.
  • the frequency domain resource group is determined, and the frequency domain resource group includes a plurality of evenly spaced combs (one comb is one subcarrier).
  • the frequency domain comb corresponds to a base sequence
  • the index of the frequency domain comb Also used for the user equipment to determine a base sequence for generating a sequence of reference signals.
  • the relationship between the frequency domain comb and the base sequence may be a many-to-one or one-to-one correspondence.
  • the base station sends the downlink control message by using a UE-specific message or the like make.
  • a base station is provided for performing the method of a possible implementation of the thirteenth aspect or the thirteenth aspect.
  • the base station may comprise means for performing the method of any of the thirteenth or thirteenth aspects of the possible implementation.
  • another base station comprising a memory and a processor for storing instructions for executing instructions stored in the memory, and performing execution of the instructions stored in the memory such that the processor
  • a sixteenth aspect a computer readable storage medium for storing a computer program, the computer program comprising instructions for performing the method of the thirteenth aspect or any of the possible implementations of the thirteenth aspect.
  • a method for transmitting a reference signal includes: the base station transmitting downlink control information to the user equipment, where the downlink control information is used to indicate that the user equipment determines a frequency domain of the reference signal that carries the user equipment. a resource, the frequency domain resource is an equally spaced subcarrier in a frequency domain, and the reference signal is used for demodulation of a data channel; the base station sends the reference signal to the user equipment on the frequency domain resource or the base station receives the user The reference signal sent by the device on the frequency domain resource.
  • the downlink control signaling carries a first parameter, where the first parameter is used to determine a frequency domain resource that carries a reference signal of the user equipment, where
  • the first parameter includes at least one of the following parameters: the user equipment specific parameter, the time domain specific parameter, the cell specific parameter, the frequency domain specific parameter, the first configuration parameter of the base station, and the first configuration parameter of the base station is The configuration information that is sent by the base station to the user equipment, where the configuration information is used by the user equipment to determine a frequency domain resource that carries a reference signal of the user equipment.
  • the first configuration parameter of the base station includes at least one of the following parameters: The antenna port, the frequency domain start position of the transmission comb, the transmission comb index, and the subcarrier set index.
  • the downlink control signaling carries a second parameter
  • the The two parameters are used to determine a cyclic shift and/or orthogonal code used by the sequence of reference signals
  • the second parameter comprises at least one of the following parameters: user equipment specific parameters, time domain specific parameters, a cell-specific parameter, a frequency-domain-specific parameter, and a second configuration parameter of the base station, where the second configuration parameter of the base station is configuration information that is sent by the base station to the user equipment, where the configuration information is used by the user equipment to determine The cyclic shift and/or orthogonal code used by the sequence of reference signals.
  • the second configuration parameter of the base station includes the following parameters At least one of: an antenna port, a frequency domain start position of a transmission comb, a transmission comb index, a subcarrier set index, a cyclic shift identifier, and an orthogonal code identifier.
  • a base station is provided for performing the method of a possible implementation of the seventeenth aspect or the seventeenth aspect.
  • the base station may comprise means for performing the method of any of the seventeenth or seventeenth aspects of the possible implementation.
  • another base station comprising a memory and a processor for storing instructions for executing instructions stored in the memory, and performing execution of the instructions stored in the memory such that the processor The method of any of the seventeenth or seventeenth aspects of the possible implementation is performed.
  • a computer readable storage medium for storing a computer program comprising instructions for performing the method of any of the seventeenth or seventeenth aspects.
  • a method for transmitting a reference signal comprising: determining, by a first device, at least one reference signal corresponding to at least one frequency domain resource group for transmitting the reference signal on a symbol of a bearer reference signal Generating a sequence, wherein the one frequency domain resource group corresponds to one reference signal generation sequence; the first device generates the reference signal according to the at least one reference signal generation sequence, and maps to a time domain of the symbol, and the frequency domain is the At least one frequency domain resource group on the time-frequency resource.
  • the specific implementation is as follows: when the first device and the second device are both in the time domain and the frequency domain is the time frequency of the third frequency domain resource group.
  • the first device and the second device are different according to the cyclic shift or orthogonal code used by the third reference signal generating sequence to generate the reference signal; wherein the third frequency domain resource group is the at least One of the frequency domain resource groups, the third reference signal generation sequence is a reference signal generation sequence corresponding to the third frequency domain resource group.
  • the cyclic shift or the orthogonal code is determined by the first device according to the first parameter set,
  • the parameter in the first parameter set includes one or more of a user equipment specific parameter, a time domain specific parameter, a cell specific parameter, a network side device specific parameter, a frequency domain specific parameter, a network side configuration parameter, and a combined parameter, and the parameter
  • the combined parameter is a combination of a plurality of parameters of a user equipment specific parameter, a time domain specific parameter, a cell specific parameter, a network side device specific parameter, a frequency domain specific parameter, and a network side configuration parameter; or, when the first device is a user equipment
  • the cyclic shift or orthogonal code is that the network side device connected to the first device notifies the first device.
  • the reference signal generation sequence corresponding to the third frequency domain resource group of the first device and the second device are in the first The reference signal generation sequence corresponding to the tri-frequency domain resource group is different.
  • the first device determines, by using a symbol of a bearer reference signal, at least one frequency domain resource group for transmitting the reference signal
  • the specific device is configured to: determine, by the first device, a first reference signal generating sequence corresponding to the first frequency domain resource group, and determine a second reference signal generating sequence corresponding to the second frequency domain resource group; And generating, by the first device, the reference signal according to the at least one reference signal generation sequence, and mapping to a time-frequency domain for transmitting the reference signal, and the frequency domain is a time-frequency resource of the at least one frequency domain resource group, where Generating, by the first device, a first reference signal sequence of the reference signal according to the first reference signal generation sequence, and mapping to a time-frequency resource in which the time domain is the symbol and the frequency domain is the first frequency domain resource group; The first device generates a second reference signal sequence of the reference signal according to the second reference
  • the reference signal generation sequence is determined by the first device according to the second parameter set, where the second parameter set is
  • the parameter in the parameter includes one or more of a user equipment specific parameter, a time domain specific parameter, a cell specific parameter, a network side device specific parameter, a frequency domain specific parameter, a network side configuration parameter, and a combined parameter, and the combined parameter is a user equipment.
  • the relationship is pre-agreed; or, when the first device is the user equipment, the corresponding relationship between the frequency domain resource group and the reference signal generation sequence is sent by the network side device connected to the first device to the first device.
  • an apparatus for performing the method of a possible implementation of the twenty-first aspect or the twenty-first aspect.
  • the apparatus may comprise means for performing the method of any of the possible implementations of the twenty-first aspect or the twenty-first aspect.
  • a twenty-third aspect there is provided another apparatus comprising a memory for storing instructions for executing instructions stored in the memory, and a processor for causing the processing of the instructions stored in the memory
  • a memory for storing instructions for executing instructions stored in the memory
  • a processor for causing the processing of the instructions stored in the memory
  • a twenty-fourth aspect a computer readable storage medium for storing a computer program, the computer program comprising any of the possible implementations of the twenty-first aspect or the twenty-first aspect Method of instruction.
  • a communication system comprising a user equipment comprising the user equipment of the first aspect or any possible implementation of the first aspect.
  • a communications system comprising a base station and a user equipment, the user equipment being the user equipment in the second aspect or any possible implementation of the second aspect, or the third aspect or User equipment in any possible implementation of the third aspect.
  • a communication system comprising a user equipment, the user equipment comprising the user equipment in any of the possible implementations of the ninth aspect or the ninth aspect.
  • a communication system comprising a device, which is the device in any of the possible implementations of the twenty-second aspect or the twenty-second aspect, or the twenty-third aspect Or the twenty-third party A device in any possible implementation of the face.
  • FIG. 1 is a schematic diagram of a method for transmitting a reference signal according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of multiplexing of RS resources of an uplink multi-user according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a method for transmitting a reference signal according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a method for transmitting a reference signal according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of frequency domain resources and frequency domain combs according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of multiple user equipments multiplexing RF resources by using a combination of FDM and CDM according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of another transmission method of a reference signal according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a physical device according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of still another transmission method of a reference signal according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of another RS resource multiplexing of an uplink multi-user according to an embodiment of the present invention.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • a terminal which may be called a user equipment (User Equipment, UE), a user, etc., may communicate with one or more core networks via a Radio Access Network (RAN), and may be a mobile terminal, such as Mobile phones (or “cellular" phones) and computers with mobile terminals, for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or wireless access networks data.
  • RAN Radio Access Network
  • An air interface resource is defined as a time domain and a frequency domain resource of an air interface, and is usually a Resource Element (RE), a Resource Block (RB), a symbol, a subcarrier, and a transmission time interval (Transmission Time). Interval, TTI).
  • the air interface resource can be divided into a frequency domain and a time domain.
  • the minimum resource granularity of the frequency domain division is a subcarrier, and the minimum resource granularity of the time domain division is a symbol.
  • An RE represents a resource of one subcarrier in a symbol time, and each RE can carry certain information.
  • N symbols form a TTI in time.
  • the M subcarriers in one TTI are combined to form one RB.
  • the URLLc uplink service can flexibly occupy the physical resources of the MBB uplink service in the short-term TTI by means of preemption or reservation.
  • the short TTI mentioned here refers to a subframe that is shorter in time.
  • one subframe length of LTE is 1 ms
  • the subframe length of a short TTI is shorter than 1 ms, for example, 0.125 ms or other length of time.
  • the number of time domain symbols is reduced, there are few symbols that can be used for uplink data demodulation RS transmission in the uplink, and there may be only one symbol.
  • FIG. 1 is a schematic diagram of a method for transmitting a reference signal according to an embodiment of the present invention. The method of Figure 1 is performed by a user equipment.
  • the first user equipment determines at least one base sequence corresponding to at least one frequency domain resource group for transmitting the reference signal on a symbol of the bearer reference signal.
  • the one frequency domain resource group corresponds to one base sequence, and each frequency domain resource group includes multiple subcarriers with the same number of subcarriers.
  • one frequency domain resource group may include multiple frequency domain subcarriers, and each frequency domain resource group includes the same number of subcarriers.
  • a symbol for carrying a reference signal may include one or more symbols.
  • a base sequence is not equivalent to a base sequence, the former refers to the number of base sequences and the latter refers to the type of base sequence.
  • the first user equipment sends a reference signal in at least one frequency domain resource group, each frequency domain resource group sends a reference signal sequence of the reference signal, and at least one reference signal sequence sent on the at least one frequency domain resource group forms the reference signal.
  • Each reference signal sequence is generated by a base sequence, and the first user equipment needs to determine that the number of base sequences is the same as the number of frequency domain resource groups.
  • One frequency domain resource group corresponds to one base sequence, and different frequency domain resource groups may use the same or different base sequences, and the total number of types of the at least one base sequence is less than or equal to the number of the at least one base sequence.
  • a frequency domain resource group corresponds to a base sequence
  • the frequency domain resource group and the base sequence type may have a one-to-one correspondence or a many-to-one relationship.
  • an index of a frequency domain resource group corresponds to an index of a base sequence
  • an index of a frequency domain resource group may be related to an index of a base sequence.
  • the frequency domain resource group index 1, 2, 3 corresponds to the base sequence index 1
  • the frequency domain resource group index 4 corresponds to the base sequence index 2, and the like. That is, different frequency domain resource groups can use the same or different base sequences.
  • the total number of types of the at least one base sequence corresponding to the at least one frequency domain resource group for transmitting the reference signal is less than or equal to the number of the at least one base sequence.
  • the correspondence between the frequency domain resource group and the base sequence is pre-agreed by the base station and the user equipment.
  • the corresponding relationship between the frequency domain resource group and the base sequence is sent by the base station to the user equipment.
  • the first user equipment generates the reference signal according to the at least one base sequence, and maps to a time-frequency resource whose time domain is the symbol and the frequency domain is the at least one frequency domain resource group.
  • the first user equipment generates reference signals according to the base sequence, each base sequence generates a reference signal sequence of the reference signals, and all of the generated reference signal sequences constitute a reference signal.
  • the reference signal may be mapped to the time-frequency resource of the transmission reference signal, where the time domain of the time-frequency resource is the symbol (the symbol of the bearer reference signal), and the frequency domain is The at least one frequency domain resource group.
  • the reference signal may be transmitted after the first user equipment maps the reference signal to the time-frequency resource.
  • the possibility of implementation can improve the multiplexing efficiency of RS resources and realize the multiplexing of multi-user RS resources.
  • the user equipment and the second user equipment generate the reference signal sequence according to the third base sequence.
  • the cyclic shift is different; wherein the third frequency domain resource group is one of the at least one frequency domain resource group, and the third base sequence is a base sequence corresponding to the third frequency domain resource group.
  • the RSs of different bandwidth UEs in the same frequency domain resource group can be orthogonalized, thereby improving RS resources.
  • the multiplexing efficiency enables multiplexing of multi-user RS resources.
  • the step 101 is specifically implemented as follows: the first user equipment determines a first base sequence corresponding to the first frequency domain resource group, and determines a second base sequence corresponding to the second frequency domain resource group; Generating, by the first user equipment, a first reference signal sequence of the reference signal according to the first base sequence, and mapping to a time-frequency resource in which the time domain is the symbol and the frequency domain is the first frequency domain resource group; A user equipment generates a second reference signal sequence of the reference signal according to the second base sequence, and maps to a time-frequency resource whose time domain is the symbol and the frequency domain is the second frequency domain resource group.
  • the first user equipment generates the first reference signal sequence and the second reference signal sequence uses a different cyclic shift.
  • the first user equipment generates the first reference signal sequence and the cyclic shift used by the second reference signal sequence is the same.
  • the cyclic shift is that the base station notifies the user equipment; or, the cyclic shift
  • the bit is determined by the user equipment according to a configuration parameter, where the configuration parameter includes one or more of a UE specific configuration parameter, a time domain specific configuration parameter, a cell specific configuration parameter, and a frequency domain specific configuration parameter, and the configuration parameter cannot be only Includes cell-specific configuration parameters or frequency domain specific configuration parameters.
  • FIG. 2 is a schematic diagram of multiplexing of RS resources of an uplink multi-user according to an embodiment of the present invention.
  • the frequency domain includes four frequency domain resource groups of frequency domain resource groups N to N+3, and the time domain includes 7 symbols of 0 to 6.
  • the UE1 transmits data on the time-frequency resource in the time domain of the symbol 2 and the frequency domain is the frequency domain resource group N to N+3.
  • the UE2 is in the time domain as the symbol 4, 5, and the frequency domain is the frequency domain resource group N, N.
  • the data is transmitted on the time-frequency resource of +1, and the UE3 transmits data on the time-frequency resource whose frequency domain is the symbol 4, 5 and the frequency domain is the frequency domain resource group N+2, N+3.
  • UE1, UE2, and UE3 all transmit reference signals in symbol 3 (the time-frequency resource indicated by the gray square), where UE1 is in the time domain as symbol 3 and the frequency domain is on the time-frequency resource of the frequency domain resource group N-N+3.
  • the reference signal is sent, and the UE2 transmits the reference signal on the time-frequency resource in the time domain of the symbol 3 and the frequency domain is the frequency domain resource group N, N+1.
  • the UE3 is in the time domain as the symbol 3 and the frequency domain is the frequency domain resource group N+. 2.
  • the reference signal is sent on the time-frequency resource of N+3.
  • a reference signal may include a reference signal sequence generated according to a base sequence, and may also include multiple reference signal sequences generated according to multiple base sequences.
  • one frequency domain resource group corresponds to one base sequence
  • multiple different frequency domain resource groups may correspond to the same base sequence.
  • Each of the frequency domain resource groups may include one or more subcarriers.
  • the correspondence between the frequency domain resource group and the base sequence may be that the index of the frequency domain resource group is related to the index of the base sequence, and the like.
  • the frequency domain resource group index 1, 2, 3 corresponds to the base sequence index 1
  • the frequency domain resource group index 5 corresponds to the base sequence index 2, and the like.
  • the frequency domain resource groups N, N+1, N+2, and N+3 in Fig. 2 correspond to the base sequences N', N'+1, N'+2, and N'+3, respectively.
  • the correspondence between the frequency domain resource group and the base sequence may be specified by the protocol, or is pre-agreed by the base station and the user equipment, or is notified to the user equipment by the base station by using a configuration message, which is used by the embodiment of the present invention. No restrictions.
  • the UE For a UE, the UE generates a reference signal sequence of the reference signal by using the base sequence corresponding to the frequency domain resource group on the occupied frequency domain resource group, and maps the reference signal sequence to the time-frequency resource corresponding to the frequency domain resource group.
  • the UE Taking UE1 as an example, the UE generates reference signal sequences N', N'+1, N'+2, and N'+3 according to the base sequences N, N+1, N+2, and N+3, respectively, and maps them to the time.
  • the domain is symbol 3, and the frequency domain is on the time-frequency resources of the frequency domain resource groups N, N+1, N+2, and N+3.
  • the cyclic shift used by the user equipment to generate the reference signal sequence according to the base sequence may be that the base station notifies the user equipment, or may be determined by the user equipment according to the configuration parameter.
  • the configuration parameters may include one or more of UE-specific configuration parameters, time domain-specific configuration parameters, cell-specific configuration parameters, and frequency domain-specific configuration parameters of the user equipment. It should be noted that the configuration parameters cannot include only cell specific configuration parameters or frequency domain specific configuration parameters.
  • the cyclic shift used by the same user equipment to generate the reference signal sequence according to the base sequence is the same.
  • the base station may only notify one cyclic shift to the user equipment, or the user equipment may determine a cyclic shift according to the configuration parameters.
  • different user equipments use different cyclic shifts of the same base sequence to generate respective reference signal sequences.
  • the cyclic signal used by the reference signal sequence generated by the UE1 and the UE2 using the base sequence N is different.
  • the RS corresponding to the transmitted data can use the same cyclic shift of multiple base sequences, so that the overhead of the base station side control signaling can be greatly saved.
  • the multiplexing rate of the RS resource can be improved, the multiplexing of the RS resources of the multiple user equipments can be realized, and the Orthogonality of RS between users.
  • FIG. 3 is a schematic diagram of a method for transmitting a reference signal according to an embodiment of the present invention. The method of Figure 3 is performed by a user equipment.
  • the user equipment receives downlink control signaling sent by the base station, where the downlink control signaling is used to indicate the user equipment. And transmitting, by the symbol carrying the reference signal, a frequency domain resource group of the reference signal, where each frequency domain resource group includes multiple subcarriers with the same number of subcarriers.
  • the downlink control signaling specifically configures a UE-specific message for the user.
  • the user equipment generates a reference signal sequence and maps to a time-frequency resource whose time domain is the symbol and the frequency domain is the frequency domain resource group.
  • the user equipment generates a reference signal according to the frequency domain resource group allocated by the base station, so that different user equipments use different frequency domain resources to send reference signals, thereby improving multiplexing efficiency of RS resources and implementing multi-user RS. Reuse of resources.
  • the downlink control signaling carries an index of the frequency domain comb.
  • the method further includes: determining, by the user equipment, the frequency domain resource group according to the frequency domain resource occupied by the user equipment, and the frequency domain resource group, where the frequency domain resource group includes a plurality of evenly spaced comb teeth (one comb tooth is one subcarrier) .
  • the frequency domain comb is used to extract one subcarrier from every N subcarriers in a continuous frequency domain resource to obtain a plurality of evenly spaced combs (subcarriers).
  • different frequency domain combs can get different available frequency domain resources.
  • the user equipment can obtain different frequency domain resources under the same bandwidth for transmitting reference signals.
  • the comb structure may also be M subcarriers per N subcarriers, wherein intervals between the M subcarriers are equal.
  • the comb structure may be 2 subcarriers selected from every N subcarriers, the 2 subcarriers are continuous, and the interval between each 2 subcarriers is equal.
  • FIG. 4 is a schematic diagram of a method for transmitting a reference signal according to an embodiment of the present invention, and the method of FIG. 4 is performed by a user equipment.
  • the user equipment determines a frequency domain resource that carries a reference signal of the user equipment, where the frequency domain resource is an equally spaced subcarrier in a frequency domain, and the reference signal is used for demodulation of a data channel.
  • the antenna port used for the reference signal transmission is associated with an antenna port of a data channel demodulated by the reference signal.
  • the antenna port numbers of the two are the same.
  • the user equipment sends a reference signal to the base station on the frequency domain resource, or the user equipment receives the reference signal sent by the base station on the frequency domain resource.
  • the equally spaced subcarriers in the frequency domain may be frequency domain combs.
  • the comb structure may also be M subcarriers per N subcarriers, where intervals between the M subcarriers are equal.
  • the user equipment may determine, according to the first parameter, a frequency domain resource that carries a reference signal of the user equipment.
  • the first parameter may be one or more of a user equipment specific parameter, a time domain specific parameter, a cell specific parameter, a frequency domain specific parameter, and a first configuration parameter from a base station.
  • the user equipment specific parameter value can identify related parameters of the user equipment, for example, identification information of the user equipment, Radio Network Temporary Identity (RNTI), and the like.
  • RNTI Radio Network Temporary Identity
  • the cell specific parameter value can identify a relevant parameter of the cell, for example, the cell specific parameter may be cell identification information or the like.
  • the time domain specific parameter value can identify the time domain location in which the reference signal symbol is located.
  • the time domain specific parameter can be a subframe number, a slot number, a mini slot number, a symbol, and the like.
  • the frequency domain specific parameter value can identify the location of the frequency domain in which the reference signal is located, for example, the frequency domain specific reference
  • the number may be a resource block (RB) number, a resource block group (RBG) number, a subcarrier number, a resource element group (REG) number, and the like.
  • the first configuration parameter may be at least part or all of a parameter configured by the base station to the user equipment or a parameter configured by the base station to the user equipment.
  • the first configuration parameter may also be a parameter of at least part or all of configuration information configured by the base station to the user equipment.
  • the first configuration parameter is used to determine a frequency domain resource that carries a reference signal of the user equipment.
  • the first configuration parameter of the base station may be one or more of an antenna port, a frequency domain start position of the transmission comb, a transmission comb index, and a subcarrier set index.
  • the user equipment may determine a cyclic shift (Cyclic Shift, CS) and/or an Orthogonal Cover Code (OCC) that is applicable to the sequence of reference signals according to the second parameter.
  • the two parameters are one or more of a user equipment specific parameter, a time domain specific parameter, a cell specific parameter, a frequency domain specific parameter, and the second configuration parameter from the base station.
  • the user equipment specific parameter value can identify related parameters of the user equipment, for example, identification information of the user equipment, Radio Network Temporary Identity (RNTI), and the like.
  • RNTI Radio Network Temporary Identity
  • the cell specific parameter value can identify a relevant parameter of the cell, for example, the cell specific parameter may be cell identification information or the like.
  • the time domain specific parameter value can identify the time domain location in which the reference signal symbol is located.
  • the time domain specific parameter can be a subframe number, a slot number, a mini slot number, a symbol, and the like.
  • the frequency domain specific parameter value can identify the location of the frequency domain in which the reference signal is located.
  • the frequency domain specific parameter may be a resource block (RB) number, a resource block group (RBG) number, Subcarrier number, resource element group (REG) number, etc.
  • the second configuration parameter may be at least part or all of a parameter configured by the base station to the user equipment or a parameter configured by the base station to the user equipment.
  • the second configuration parameter may also be a parameter of at least part or all of the configuration information configured by the base station to the user equipment.
  • the second configuration parameter is used to determine a cyclic shift and/or an orthogonal code used by the sequence of reference signals.
  • the second configuration parameter may be an antenna port, a frequency domain start position of the transmission comb, a transmission comb index, a subcarrier set index, a cyclic shift identifier, and an orthogonal code identifier.
  • the second configuration parameter may be an antenna port, a frequency domain start position of the transmission comb, a transmission comb index, a subcarrier set index, a cyclic shift identifier, and an orthogonal code identifier.
  • the second configuration parameter may be an antenna port, a frequency domain start position of the transmission comb, a transmission comb index, a subcarrier set index, a cyclic shift identifier, and an orthogonal code identifier.
  • first parameter and the second parameter may be the same or different, or may be a partially included relationship.
  • first parameter includes the second parameter or the second parameter includes the first parameter, and may also be the first parameter. It is the same as some of the parameters in the second parameter.
  • FIG. 5 is a schematic diagram of frequency domain resources and frequency domain combs in an embodiment of the present invention.
  • a set of frequency domain combs shown in the frequency domain comb 1 can be obtained, according to the frequency domain.
  • Comb 2 (starting with the second subcarrier and then taking out one subcarrier per subcarrier) can obtain a set of frequency domain combs shown in the frequency domain comb 2.
  • different frequency domain resource groups can be obtained according to different frequency domain combs, as shown in FIG. 5.
  • the user equipment and the second user equipment occupy the same frequency domain resource, the user equipment and The frequency domain comb used by the second user equipment is different.
  • the frequency domain combs used by the user equipment and the second user equipment may be the same, and may be different, as long as different user equipments of the overlapping frequency domain resources are used differently.
  • the frequency domain comb can be used.
  • An implementation manner of the embodiment of the present invention further includes: determining, by the user equipment, the base sequence according to the frequency domain comb, and generating the reference signal sequence according to the base sequence, wherein the frequency domain comb corresponds to a base sequence.
  • the frequency domain comb and the base sequence may have a many-to-one or one-to-one mapping relationship.
  • the correspondence between the frequency domain comb and the base sequence is pre-agreed by the base station and the user equipment.
  • the correspondence between the frequency domain comb and the base sequence is sent by the base station to the user equipment.
  • the user equipment may adopt a method for generating a reference signal sequence according to a base sequence in the existing FDM technology, and the specific implementation may refer to the prior art, and details are not described herein again.
  • the frequency domain resources of the user equipment are the same or partially overlapped.
  • the RS resources can be multiplexed by using Frequency Division Multiplexing (FDM) or a combination of FDM and Code Division Multiplexing (CDM).
  • FDM Frequency Division Multiplexing
  • CDM Code Division Multiplexing
  • the reference signal when it satisfies the orthogonality, it can be regarded as the sequence of the reference signal when it is completely uncorrelated.
  • the reference signal When the reference signal satisfies the quasi-orthogonal, there is a certain correlation between the quasi-orthogonal reference signals, but related. Less sexual.
  • FIG. 6 is a schematic diagram of multiplexing multiple user equipments using FDM and CDM to multiplex RS resources according to an embodiment of the present invention.
  • user equipment 2, user equipment 3, and user equipment 1 are used.
  • the domain resources are partially overlapped, and the frequency domain resources of the user equipment 4 and the user equipments 1, 2, and 3 are partially overlapped.
  • the method of the FDM has only two combs, the four user equipments cannot be used for the four user equipments.
  • the RSs are orthogonal, the RSs of the four user equipments can be orthogonalized by multiplexing the FDM and the CDM. As shown in FIG.
  • the user equipment 1 uses the comb 1 to combine the first CS method or the first OCC method
  • the user equipment 2 uses the comb 2 to combine the first CS method or the first OCC method
  • the user equipment 3 uses The comb 2 is combined with the first CS method or the first OCC method
  • the user equipment 4 uses the comb 1 to combine the second CS method or the second OCC method, so that the four user equipments pass the complex of the frequency domain and the code domain.
  • the method is such that the RSs between the user equipments are orthogonal to each other.
  • the multiple user equipments in the embodiment of the present invention are not limited to the same cell, and the user equipments may be in the same cell or in different cells, and the direction of the data transmission of the user equipment may be the same or different, that is, the multiple user equipments may be For uplink or downlink, some user equipments may also be uplinked, and some user equipments may be downlinked.
  • the solution of this embodiment can be used as long as there is a need in the actual network to make the RSs orthogonal or quasi-orthogonal between the multiple user equipments.
  • the user equipment may determine which comb to use the RS by using the antenna port used by the base station to configure the RS of the user equipment, or the base station configures the identifier of the transmission comb to the user, or is similar to the indication method of the Sounding Reference Signal (SRS).
  • the base station determines the frequency of the starting position of the comb, and the user equipment determines the comb to be used according to the starting position of the frequency domain.
  • the base station can also indicate the comb teeth occupied by the user equipment by using different combs as a set of subcarriers and configuring the sequence number of the subcarrier set to the user equipment.
  • the CS and/or OCC used by the RS sequence of the user equipment may be related to one or more of the parameters of the antenna port of the RS, the transmission comb, the frequency domain start position, the sequence number of the subcarrier set, and the like.
  • the frequency domain start position of the pre-defined RS antenna port or the transmission comb or comb, or the serial number of the subcarrier set and the CS and/or OCC identifier are one-to-one correspondence. of.
  • the base station can directly configure the CS and/or OCC identifier used by the RS sequence.
  • the CS and/or OCC identifier may be the antenna port or transmission comb or frequency domain start position of the RS.
  • the CS and/or OCC identifiers corresponding to the sequence numbers of the subcarrier sets are different.
  • FIG. 7 is a schematic diagram of a method for transmitting a reference signal according to an embodiment of the present invention. The method of Figure 7 is performed by a base station.
  • each frequency domain resource group includes Multiple subcarriers with the same number of subcarriers.
  • the base station receives the reference signal sent by the user equipment on the frequency domain resource group.
  • the base station allocates a frequency domain resource group to the user equipment to generate a reference signal, so that different user equipments use different frequency domain resources to send reference signals, thereby improving multiplexing efficiency of RS resources and implementing multi-user RS. Reuse of resources.
  • the downlink control signaling carries an index of a frequency domain comb, where the index of the frequency domain comb is used to determine the frequency domain resource group in combination with the frequency domain resource of the user equipment, where the frequency domain resource group includes multiple intervals.
  • Combs (one comb is a subcarrier).
  • the frequency domain comb corresponds to a base sequence
  • the index of the frequency domain comb is further used by the user equipment to determine a base sequence for generating a reference signal sequence.
  • the relationship between the frequency domain comb and the base sequence may be a many-to-one or one-to-one correspondence.
  • the base station sends the downlink control signaling by using a UE-specific message or the like.
  • the embodiment of the present invention further discloses a user equipment 1 for performing the method performed by the first user equipment in the embodiment shown in FIG.
  • user equipment 1 may comprise means for performing the method performed by the first user equipment in the embodiment of Figure 1.
  • the embodiment of the invention further discloses a user equipment 2 for performing the method performed by the user equipment in the embodiment shown in FIG.
  • user equipment 2 may comprise means for performing the method performed by the user equipment in the embodiment of FIG.
  • the embodiment of the invention further discloses a user equipment 3 for performing the method performed by the user equipment in the embodiment shown in FIG. 4 .
  • user equipment 3 may comprise means for performing the method performed by the user equipment in the embodiment of FIG.
  • the embodiment of the present invention further discloses a base station 1 for performing a method performed by a base station in the embodiment shown in FIG. 7.
  • base station 1 may comprise means for performing the method performed by the base station in the embodiment of Figure 7.
  • the embodiment of the present invention further provides a user equipment 4.
  • the physical device structure of the user equipment 4 is shown in the physical device 800 of FIG. 8, and includes a processor 802, a memory 803, a transmitter 801, and a receiver 804.
  • Receiver 804, transmitter 801, processor 802, and memory 803 are interconnected by a bus 806 system.
  • the bus 806 can be an ISA bus, a PCI bus, or an EISA bus.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one double-headed arrow is shown in Figure 8, but it does not mean that there is only one bus or one type of bus.
  • transmitter 801 and receiver 804 can be coupled to antenna 805.
  • the receiver 804, the transmitter 801, the processor 802, and the memory 803 may also communicate with each other through an internal link path to transfer control and/or data signals.
  • the program can include program code, the program code including computer operating instructions.
  • Memory 803 can include read only memory and random access memory and provides instructions and data to processor 802.
  • the memory 803 may include a high speed random access memory (RAM), and may also include a non-volatile memory such as at least one disk memory.
  • the processor 802 executes the program stored in the memory 803.
  • the processor 802 can be used to perform the method of the embodiment shown in FIG. 1 and implement the functions of the first user equipment in the embodiment shown in FIG. 1.
  • Processor 802 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 802 or an instruction in a form of software.
  • the processor 802 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc., or a digital signal processor (DSP), dedicated. Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component.
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 803, and the processor 802 reads the information in the memory 803 and completes the steps of the above method in combination with its hardware.
  • the embodiment of the present invention further provides a user equipment 5, and a schematic diagram of a physical device structure thereof is shown in FIG. 8.
  • the physical unit included in the embodiment is similar to the user equipment 4, and details are not described herein.
  • the processor 802 can be used to perform the method of the embodiment shown in FIG. 3 and implement the functions of the user equipment in the embodiment shown in FIG.
  • the embodiment of the present invention further provides a user equipment 6, and the physical device structure diagram is as shown in FIG. 8.
  • the physical unit included in the embodiment is similar to the user equipment 4, and details are not described herein.
  • the processor 802 can be used to perform the method of the embodiment shown in FIG. 4 and implement the functions of the user equipment in the embodiment shown in FIG.
  • the embodiment of the present invention further provides a base station 2, and a schematic diagram of a physical device structure thereof is shown in FIG. 8.
  • the physical unit included in the embodiment is similar to the user equipment 4, and details are not described herein.
  • the processor 802 can be used to perform the method of the embodiment shown in FIG. 7 and implement the functions of the base station in the embodiment shown in FIG.
  • Embodiments of the present invention provide a reference signal transmission apparatus 1, which includes a processor and a memory.
  • the device 1 further comprises a receiver and a transmitter.
  • the memory is used to store program code
  • the processor is used to call the program code to implement the method of the embodiment shown in FIG.
  • Embodiments of the present invention provide a reference signal transmission apparatus 2, which includes a processor and a memory.
  • the device 2 further comprises a receiver and a transmitter.
  • the memory is used to store program code
  • the processor is used to call the program code to implement the method of the embodiment shown in FIG.
  • Embodiments of the present invention provide a reference signal transmission apparatus 3, which includes a processor and a memory.
  • the device 3 further comprises a receiver and a transmitter.
  • the memory is used to store program code
  • the processor is used to call the program code to implement the method of the embodiment shown in FIG.
  • Embodiments of the present invention provide a reference signal transmission apparatus 4, which includes a processor and a memory.
  • the device 4 further comprises a receiver and a transmitter.
  • the memory is used to store program code
  • the processor is used to call the program code to implement the method of the embodiment shown in FIG.
  • Embodiments of the present invention also provide a computer readable storage medium storing one or more programs, the one or more programs including instructions that are portable electronic products that include multiple applications When the device is executed, the portable electronic device can be caused to perform the method of the embodiment shown in FIG.
  • Embodiments of the present invention also provide a computer readable storage medium 2 storing one or more programs, the one or more programs including instructions, when the instructions are portable electronic including a plurality of applications When the device is executed, the portable electronic device can be caused to perform the method of the embodiment shown in FIG.
  • Embodiments of the present invention also provide a computer readable storage medium storing one or more programs, the one or more programs including instructions, when the instructions are portable electronic including multiple applications When the device is executed, the portable electronic device can be caused to perform the method of the embodiment shown in FIG.
  • Embodiments of the present invention also provide a computer readable storage medium storing one or more programs, the one or more programs including instructions, when the instructions are portable electronic including a plurality of applications When the device is executed, the portable electronic device can be caused to perform the method of the embodiment shown in FIG.
  • the embodiment of the present invention further provides a communication system, including a base station and a user equipment, where the user equipment may be the user equipment 1, the user equipment 2, or the user equipment 3 in the foregoing embodiment, and the base station may be the base station in the foregoing embodiment. 1 or base station 2.
  • FIG. 9 is a schematic diagram of a method for transmitting a reference signal according to an embodiment of the present invention.
  • the method of FIG. 9 is performed by a first device, which may be a user equipment or a network side device such as a base station or the like.
  • the first device determines, by using a symbol of the bearer reference signal, at least one reference signal generating sequence corresponding to the at least one frequency domain resource group for transmitting the reference signal.
  • One of the frequency domain resource groups corresponds to one of the reference signal generation sequences.
  • one frequency domain resource group may include multiple frequency domain subcarriers, and the number of subcarriers included in each frequency domain resource group may be the same or different.
  • a symbol for carrying a reference signal may include one or more symbols.
  • the reference signal generation sequence may be a different type of sequence, for example, may be a ZC sequence, or may be a pseudo-random sequence, and may also be other sequences that satisfy the correlation requirement, which is not limited by the embodiment of the present invention.
  • the first device sends a reference signal in at least one frequency domain resource group, each frequency domain resource group sends a reference signal sequence of the reference signal, and at least one reference signal sequence sent on the at least one frequency domain resource group constitutes the reference signal.
  • Each reference signal sequence is generated by a reference signal generation sequence, and the first device needs to determine that the number of reference signal generation sequences is the same as the number of frequency domain resource groups.
  • a frequency domain resource group corresponds to a reference signal generation sequence, and different frequency domain resource groups can generate sequences using the same or different reference signals. It should be understood that a frequency domain resource group corresponds to a reference signal generation sequence, and the correspondence between the frequency domain resource group and the reference signal generation sequence may be a one-to-one correspondence or a many-to-one relationship.
  • an index of a frequency domain resource group corresponds to a reference signal
  • the index of the generated sequence, the index of the frequency domain resource group may be related to the index of the reference signal generation sequence.
  • the frequency domain resource group index 1, 2, 3 corresponds to the reference signal generation sequence index 1
  • the frequency domain resource group index 4 corresponds to the base sequence index 2, and the like. That is, different frequency domain resource groups can generate sequences using the same or different reference signals.
  • the reference signal generation sequence is determined by the first device according to the second parameter set, where the parameters in the second parameter set include user equipment specific parameters, time domain specific parameters, cell specific parameters, One or more of a network side device specific parameter, a frequency domain specific parameter, a network side configuration parameter, and a combination parameter, where the combined parameter is a user equipment specific parameter, a time domain specific parameter, a cell specific parameter, a network side device specific parameter, A combination of a plurality of parameters in a frequency domain specific parameter and a network side configuration parameter.
  • the correspondence between the frequency domain resource group and the reference signal generation sequence is pre-agreed.
  • the protocol may specify a mapping table between the reference signal generation sequence and the frequency domain resource location of the frequency domain resource group, and the like.
  • the corresponding relationship between the frequency domain resource group and the reference signal generation sequence is sent by the network side device to the first user equipment.
  • the first device generates the reference signal according to the at least one reference signal generation sequence, and maps to a time-frequency resource whose time domain is the symbol and the frequency domain is the at least one frequency domain resource group.
  • the first device generates a reference signal according to the reference signal generation sequence, each reference signal generation sequence generates a reference signal sequence of the reference signal, and all of the generated reference signal sequences constitute a reference signal.
  • the reference signal may be mapped to the time-frequency resource of the transmission reference signal, where the time domain of the time-frequency resource is the symbol (the symbol of the bearer reference signal), and the frequency domain is At least one frequency domain resource group.
  • the reference signal can be transmitted.
  • a different reference signal generation sequence is determined according to different frequency domain resource groups, a reference signal is generated according to the reference signal generation sequence, and mapped to a corresponding time-frequency resource, and the RS is implemented for different devices in different bandwidths.
  • Orthogonality/quasi-orthogonality provides the possibility of implementation, which can improve the multiplexing efficiency of RS resources and realize the multiplexing of multi-device RS resources.
  • the first device and the second device are both the symbol in the time domain and the third frequency domain resource group mapping reference signal in the frequency domain
  • the first device and the second device are configured according to the second device.
  • the cyclically shifting or orthogonal code used by the third reference signal generating sequence to generate the reference signal sequence is different; wherein the third frequency domain resource group is one of the at least one frequency domain resource group, and the third reference signal generating sequence is The reference signal generation sequence corresponding to the third frequency domain resource group.
  • the cyclic shift or orthogonal code is determined by the first device according to the first parameter set, where the parameter in the first parameter set includes user equipment specific parameters.
  • the parameter in the first parameter set includes user equipment specific parameters.
  • the cyclic shift or orthogonal code is a network side device that is connected by the first device, and the first device is notified.
  • the first device is a user equipment
  • the cyclic shift or orthogonal code is a network side device that is connected by the first device, and the first device is notified.
  • One device is a user equipment
  • the first device and the second device when the first device and the second device both map the reference signal on the time-frequency resource in the time domain and the frequency domain is the third frequency domain resource group, the first device The reference signal generation sequence corresponding to the third frequency domain resource group is different from the reference signal generation sequence corresponding to the second frequency domain resource group by the second device.
  • the third frequency domain resource group is one of the at least one frequency domain resource group
  • the third reference signal generation sequence is a reference signal generation sequence corresponding to the third frequency domain resource group of the first device
  • the fourth reference signal generation sequence is The second device is in the reference signal generation sequence corresponding to the third frequency domain resource group, and the first device and the second device both map the reference signal in the time domain and the frequency domain is the third frequency domain resource group mapping reference signal, then the first device The reference signal may be generated according to the third reference signal generation sequence, and the second device may generate the reference signal according to the fourth reference signal generation sequence.
  • the first device may be a first user equipment, and the second device may be a second user equipment, where the first user equipment and the second user equipment may be connected/resident under the same or different network side devices.
  • the first device may be the first network side device, and the second device may be the second network side device; or the first device may be the first network side device, and the second device may be the second user
  • the device may be the same or different from the first network side device; or the first device may be the first user device, and the second device may be the second network device
  • the network side device to which the first user equipment is connected/resident may be the same as or different from the second network side device.
  • the network side device may be an Evolved Node B (eNB) in LTE, and a device that can schedule and control the user equipment, such as a Transmission/Reception Point (TRP) in the NR.
  • eNB Evolved Node B
  • TRP Transmission/Reception Point
  • the reference signal generation sequence is determined by the first device according to the second parameter set, where the parameters in the second parameter set include user equipment specific parameters, time domain specific parameters, cell specific parameters, One or more of a network side device specific parameter, a frequency domain specific parameter, a network side configuration parameter, and a combination parameter, where the combined parameter is a user equipment specific parameter, a time domain specific parameter, a cell specific parameter, a network side device specific parameter, A combination of a plurality of parameters in a frequency domain specific parameter and a network side configuration parameter.
  • the correspondence between the frequency domain resource group and the reference signal generation sequence is pre-agreed.
  • the corresponding relationship between the frequency domain resource group and the reference signal generation sequence is sent by the network side device connected to the first device to the first device. of.
  • different cyclic shifts or orthogonal codes are configured by using different reference signals in the same frequency domain resource group for different devices, or different reference signals are configured on the same frequency domain resource group for different devices.
  • the generation of the sequence enables the devices occupying different bandwidths to be orthogonal to the RSs in the same frequency domain resource group, thereby improving the multiplexing efficiency of the RS resources and realizing multiplexing of the multi-device RS resources.
  • the step 901 is specifically implemented as follows: the first device determines a first reference signal generation sequence corresponding to the first frequency domain resource group, and determines a second reference signal generation sequence corresponding to the second frequency domain resource group;
  • the implementation is as follows: the first device generates a first reference signal sequence of the reference signal according to the first reference signal generation sequence, and maps to a time-frequency resource in which the time domain is the symbol and the frequency domain is the first frequency domain resource group. And generating, by the first user equipment, the second reference signal sequence of the reference signal according to the second reference signal generation sequence, and mapping the time domain to the time-frequency resource of the second frequency domain resource group .
  • cyclic shift or orthogonal code used by the first device to generate the first reference signal sequence and the second reference signal sequence may be the same or different.
  • FIG. 10 is a schematic diagram of RS resource multiplexing of multiple devices according to an embodiment of the present invention.
  • the frequency domain includes four frequency domain resource groups of frequency domain resource groups N to N+3, and the time domain includes 7 symbols of 0-6.
  • the device 1 transmits data on a time-frequency resource in which the time domain is symbol 2 and the frequency domain is the frequency domain resource group N to N+3, and the device 2 is in the time domain.
  • the data is transmitted on the time-frequency resources of the frequency domain resource group N and N+1 for the symbols 4 and 5, and the device 3 is the symbol 4, 5 in the time domain and the frequency domain resource group N+2, N+ in the frequency domain. 3 sends data on the time-frequency resource.
  • the device 1, the device 2, and the device 3 all transmit reference signals in symbol 3 (the time-frequency resource indicated by the gray square), wherein the device 1 is in the time domain as symbol 3 and the frequency domain is in the frequency domain resource group N to N+3.
  • the reference signal is transmitted on the time-frequency resource
  • the device 2 transmits the reference signal on the time-frequency resource in the frequency domain of the frequency domain resource group N, N+1 in the time domain
  • the device 3 is in the time domain as the symbol 3 and the frequency domain is
  • the reference signal is transmitted on the time-frequency resources of the frequency domain resource group N+2 and N+3.
  • one reference signal may include one reference signal sequence generated according to a reference signal generation sequence, and may also include multiple reference signal sequences generated according to multiple base sequences.
  • one frequency domain resource group corresponds to one reference signal generation sequence
  • each of the plurality of different frequency domain resource groups may correspond to different reference signal generation sequences, or may correspond to the same The reference signal generation sequence.
  • Each of the frequency domain resource groups may include one or more subcarriers.
  • the correspondence between the frequency domain resource group and the reference signal generation sequence may be that the index of the frequency domain resource group is related to the index of the reference signal generation sequence, and the like.
  • the frequency domain resource group indexes 1, 2, 3 correspond to the reference signal generation sequence index 1
  • the frequency domain resource group index 5 corresponds to the reference signal generation sequence index 2, and the like.
  • the frequency domain resource groups N, N+1, N+2, and N+3 in FIG. 10 correspond to the reference signal generation sequences M0, M1, M2, and M3, respectively.
  • M0, M1, M2, and M3 may be the same, may be different from each other, or may be partially different.
  • the reference signal generation sequence used by the device on the specific frequency domain resource group may be determined by the device according to the second parameter set, where the parameters in the second parameter set include user equipment specific parameters and time domain specific parameters.
  • the parameters in the second parameter set include user equipment specific parameters and time domain specific parameters.
  • a combination of a plurality of parameters of the network side device specific parameter, the frequency domain specific parameter, and the network side configuration parameter; or the second parameter set may be specified by a protocol; or when the device is a user equipment, by the network side The device is notified to the user equipment by using a configuration message, which is not limited in this embodiment of the present invention.
  • the device uses a reference signal generation sequence corresponding to the frequency domain resource group to generate a reference signal sequence of the reference signal on the occupied frequency domain resource group, and maps to the time frequency corresponding to the frequency domain resource group. Resources.
  • device 1 Taking device 1 as an example, device 1 generates reference signal sequences according to reference signal generation sequences M0, M1, M2, and M3, respectively, and maps them to symbol 3 in the time domain and frequency domain resource groups N, N+1, and N in the frequency domain. +2 and N+3 on the time-frequency resource.
  • the device may use corresponding orthogonal parameters when generating a reference signal sequence according to the reference signal generation sequence to ensure orthogonality/quasi-orthogonality of reference signals between different devices.
  • the orthogonal parameter is a cyclic shift
  • the orthogonal parameter is an orthogonal code.
  • the orthogonal parameter used may be determined by the device according to the first parameter set, where the parameters in the first parameter set include user equipment specific parameters, time domain specific parameters, cell specific parameters, network side device specific parameters, and frequency domain.
  • the specific parameters and the network side configuration parameters when the device is a user equipment, the network side device may notify the user equipment, which is not limited by the embodiment of the present invention.
  • the orthogonal parameters used by the same device to generate the reference signal sequence based on the reference signal generation sequence may be the same or different, preferably using the same orthogonal parameters.
  • the device may determine a cyclic shift according to the parameter; if the device is a user equipment, the network side device may only notify one orthogonal parameter to the user equipment.
  • Different devices can use the same reference signal to generate different orthogonal parameters of the sequence on the same frequency domain resource group.
  • the numbers produce respective reference signal sequences.
  • the orthogonal parameters used by the reference signal sequence generated by the device 1 and the device 2 using the reference signal generation sequence M0 are different.
  • different devices can generate different reference signal sequences using different reference signal generation sequences.
  • device 1 and device 2 generate respective reference signal sequences using reference signal generation sequences M01 and M02, respectively.
  • the RS corresponding to the transmitted data can use the same orthogonal parameter of the multiple reference signal generation sequences.
  • the RS corresponding to the transmitted data can use different reference parameters to generate different orthogonal parameters of the sequence.
  • the RS corresponding to the transmitted data can use the same reference signal generation sequence on different frequency domain resource groups.
  • the RS corresponding to the transmitted data can use different reference signal generation sequences on the same frequency domain resource group; from a device perspective, the RS corresponding to the transmitted data can be in different frequency domains. A sequence of different reference signals is generated on the resource group.
  • the RS corresponding to the transmitted data can use different reference signal generation sequences on the same frequency domain resource group; from a device perspective, the RS corresponding to the transmitted data can be in different frequency domains.
  • a sequence is generated on the resource group using the same reference signal.
  • the multiplexing rate of the RS resource can be improved, the RS resources of multiple devices can be reused, and multiple Orthogonal/quasi-orthogonality of RS between devices.
  • the embodiment of the present invention further discloses a device 1 for performing the method performed by the first device in the embodiment shown in FIG.
  • the apparatus may comprise means for performing the method performed by the first device in the embodiment of Figure 9.
  • the device may include a determining unit and a signal generating unit, where the determining unit is configured to determine at least one reference signal generating sequence corresponding to the at least one frequency domain resource group for transmitting the reference signal on the symbol of the bearer reference signal,
  • the one of the frequency domain resource groups corresponds to one of the reference signal generation sequences
  • the signal generating unit is configured to generate the reference signal according to the at least one reference signal generation sequence, and map the time domain to the symbol, and the frequency domain to the at least On a time-frequency resource of a frequency domain resource group.
  • the first device and the second device when the first device and the second device both map the reference signal on the time-frequency resource in the time domain and the frequency domain is the third frequency domain resource group, the first device and the first device The second device is different according to the cyclic shift or orthogonal code used by the third reference signal generation sequence to generate the reference signal; wherein the third frequency domain resource group is one of the at least one frequency domain resource group, the third reference The signal generation sequence is a reference signal generation sequence corresponding to the third frequency domain resource group.
  • the cyclic shift or orthogonal code is determined by the first device according to the first parameter set, where the parameter in the first parameter set includes user equipment specific parameters, One or more of a time domain specific parameter, a cell specific parameter, a network side device specific parameter, a frequency domain specific parameter, and a network side configuration parameter.
  • the cyclic shift or orthogonal code is that the network side device connected to the first device notifies the first device. equipment.
  • the first device and the second device when the first device and the second device both map the reference signal on the time-frequency resource in the time domain and the frequency domain is the third frequency domain resource group, the first device The reference signal generation sequence corresponding to the third frequency domain resource group is different from the reference signal generation sequence corresponding to the second frequency domain resource group by the second device.
  • the determining unit is specifically configured to determine a first reference signal generating sequence corresponding to the first frequency domain resource group, and determine a second reference signal generating sequence corresponding to the second frequency domain resource group; where the signal generating unit is specifically used Generating, according to the first reference signal generation sequence, a first reference signal sequence of the reference signal, and mapping to a time-frequency resource in the time domain for the first frequency domain resource group;
  • the reference signal generation sequence generates a second reference signal sequence of the reference signal, and maps to a time-frequency resource in which the time domain is the symbol and the frequency domain is the second frequency domain resource group.
  • the reference signal generation sequence is determined by the device according to the second parameter set, where the parameters in the second parameter set include user equipment specific parameters, time domain specific parameters, cell specific parameters, network side device specific parameters, and frequency.
  • the parameters in the second parameter set include user equipment specific parameters, time domain specific parameters, cell specific parameters, network side device specific parameters, and frequency.
  • a combination of multiple parameters in a configuration parameter is a combination of multiple parameters in a configuration parameter.
  • the correspondence between the frequency domain resource group and the reference signal generation sequence is pre-agreed.
  • the corresponding relationship between the frequency domain resource group and the reference signal generation sequence is sent by the network side device connected to the device to the device.
  • the embodiment of the present invention further discloses a device 2, which may be shown in the physical device 800 of FIG. 8, and includes a processor 802, a memory 803, a transmitter 801, and a receiver 804.
  • Receiver 804, transmitter 801, processor 802, and memory 803 are interconnected by a bus 806 system.
  • the bus 806 can be an ISA bus, a PCI bus, or an EISA bus.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one double-headed arrow is shown in Figure 6, but it does not mean that there is only one bus or one type of bus.
  • transmitter 801 and receiver 804 can be coupled to antenna 805.
  • the receiver 804, the transmitter 801, the processor 802, and the memory 803 may also communicate with each other through an internal link path to transfer control and/or data signals.
  • the memory 803 is configured to store a program.
  • the program can include program code, the program code including computer operating instructions.
  • Memory 803 can include read only memory and random access memory and provides instructions and data to processor 802.
  • the memory 803 may include a high speed RAM memory and may also include a non-volatile memory such as at least one disk memory.
  • the processor 802 executes the program stored in the memory 803.
  • the processor 802 is configured to perform the following methods:
  • Processor 802 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 802 or an instruction in a form of software.
  • the processor 802 may be a general-purpose processor, including a CPU, a network processor (NP), etc.; or may be a DSP, an ASIC, an FPGA, or other programmable logic device, a discrete gate or a transistor logic device, or a discrete hardware component. .
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 803, and the processor 802 reads the information in the memory 803 and completes the steps of the above method in combination with its hardware.
  • the first device and the second device are both the symbol in the time domain and the third frequency domain resource group mapping reference signal in the frequency domain
  • the first device and the second device are configured according to the second device.
  • the cyclically shifting or orthogonal code used by the third reference signal generating sequence to generate the reference signal sequence is different; wherein the third frequency domain resource group is one of the at least one frequency domain resource group, and the third reference signal generating sequence is The reference signal generation sequence corresponding to the third frequency domain resource group.
  • the cyclic shift or orthogonal code is determined by the first device according to the first parameter set, where the parameter in the first parameter set includes user equipment specific parameters.
  • Time domain specific reference One or more of number, cell specific parameters, network side device specific parameters, frequency domain specific parameters, and network side configuration parameters.
  • the cyclic shift or orthogonal code is a network side device that is connected by the first device, and the first device is notified.
  • the first device is a user equipment
  • the cyclic shift or orthogonal code is a network side device that is connected by the first device, and the first device is notified.
  • One device is a user equipment
  • the first device and the second device when the first device and the second device both map the reference signal on the time-frequency resource in the time domain and the frequency domain is the third frequency domain resource group, the first device The reference signal generation sequence corresponding to the third frequency domain resource group is different from the reference signal generation sequence corresponding to the second frequency domain resource group by the second device.
  • the reference signal generation sequence is determined by the first device according to the second parameter set, where the parameters in the second parameter set include user equipment specific parameters, time domain specific parameters, cell specific parameters, One or more of a network side device specific parameter, a frequency domain specific parameter, a network side configuration parameter, and a combination parameter, where the combined parameter is a user equipment specific parameter, a time domain specific parameter, a cell specific parameter, a network side device specific parameter, A combination of a plurality of parameters in a frequency domain specific parameter and a network side configuration parameter.
  • the correspondence between the frequency domain resource group and the reference signal generation sequence is pre-agreed.
  • the corresponding relationship between the frequency domain resource group and the reference signal generation sequence is sent by the network side device connected to the first device to the first device. of.
  • the processor 802 determines that the at least one reference signal generation sequence corresponding to the at least one frequency domain resource group for transmitting the reference signal on the symbol of the bearer reference signal is specifically implemented by: the processor 802 determining that the first frequency domain resource group corresponds to The first reference signal generating sequence determines a second reference signal generating sequence corresponding to the second frequency domain resource group; at this time, the processor 802 generates the reference signal according to the at least one reference signal generating sequence, and maps to the time domain as the The symbol and the frequency domain are the time-frequency resources of the at least one frequency domain resource group, and the processor 802 is configured to generate a first reference signal sequence of the reference signal according to the first reference signal generation sequence, and map the time to the time domain.
  • the symbol and the frequency domain are time-frequency resources of the first frequency domain resource group; generating a second reference signal sequence of the reference signal according to the second reference signal generation sequence, and mapping to the time domain for the symbol and the frequency domain The time-frequency resource of the second frequency domain resource group.
  • Embodiments of the present invention also provide a computer readable storage medium storing one or more programs, the one or more programs including instructions, when the instructions are portable electronic including a plurality of applications When the device is executed, the portable electronic device can be caused to perform the method of the embodiment shown in FIG.
  • the embodiment of the invention further provides a communication system, including the foregoing device 1 or device 2.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • 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.
  • Another The coupling or direct coupling or communication connection between the points shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the embodiments of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present invention, or the part contributing to the prior art or the part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

Abstract

本发明实施例提供了一种参考信号的传输方法、设备和系统。该方法包括：第一设备确定承载参考信号的符号上用于发送该参考信号的至少一个频域资源组所对应的至少一个参考信号生成序列，其中，一个该频域资源组对应于一个该参考信号生成序列；该第一设备根据该至少一个参考信号生成序列生成该参考信号，并映射到时域为该符号、频域为该至少一个频域资源组的时频资源上。

Description

参考信号的传输方法、设备和系统
本申请要求于2016年4月8日提交中国专利局、申请号为201610218110.4、发明名称为“参考信号的传输方法、用户设备、基站和系统”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。
本申请要求于2016年9月29日提交中国专利局、申请号为201610867115.X、发明名称为“参考信号的传输方法、设备和系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明实施例涉及通信领域，并且更具体地，涉及参考信号的传输方法、设备和系统。
背景技术
第五代网络(5th Generation，5G)，也称为NR(New Radio/RAT)。国际电信同盟(International Telecommunications Union，ITU)在对5G的期望和要求中定义3大类业务，分别为移动宽带增强(Enhanced Mobile Broadband，eMBB)业务，低时延高可靠通信(Ultra-reliable and Low Latency Communications，URLLc)业务和大规模物联网(Massive Machine Type Communications，mMTC)业务。其中，URLLc业务期望的时延非常短，最低仅有1ms。URLLc业务由于时延紧急，因此在有数据到达时需要立刻调度分配资源，基本不能有等待。另一方面，URLLc业务对可靠性的要求也很高，一般要求能够达到99.999％的超高可靠性。
本发明实施例的一种现有技术中，长期演进(Long Term Evolution，LTE)中的上行多用户多输入多输出(Uplink Multi-User Multiple-Input Multiple-Output，UL MU-MIMO)系统允许在相同的时频资源上以码分复用(Code Division Multiplex，CDM)的方式定义相互正交的解调参考信号(Demodulation Reference Signal，DMRS)，从而实现UL MU-MIMO配对用户设备(User Equipment，UE)间参考信号(Reference signal，RS)资源的复用。若UL MU-MIMO配对UE占用不同带宽且带宽部分重叠，则不同UE会使用不同长度的参考信号基序列。此时只采用基序列的循环移位并不能保证不同UE的RS间的正交性。下行多用户多输入多输出(Downlink Multi-User Multiple-Input Multiple-Output，DL MU-MIMO)系统配对UE占用不同带宽且带宽部分重叠的场景，以及不同小区间的正交/准正交导频设计的场景中，也存在类似的问题。如何在不同带宽场景下，保证不同UE的RS间的正交性，以实现多用户RS资源的复用，是本发明实施例所要解决的技术问题。
发明内容
本发明实施例提供一种参考信号的传输方法、设备和系统，能够实现多用户RS资源的复用。
第一方面，提供了一种参考信号的传输方法，该方法包括：第一用户设备确定承载 参考信号的符号上用于发送该参考信号的至少一个频域资源组所对应的至少一个基序列，其中，一个该频域资源组对应于一种该基序列，每个频域资源组包括子载波个数相同的多个子载波；该用户设备根据该至少一个基序列生成该参考信号，并映射到时域为该符号、频域为该至少一个频域资源组的时频资源上。
结合第一方面，在第一种可能的实现方式中，具体实现为：如果该第一用户设备与第二用户设备都在第三频域资源组生成参考信号序列，则该第一用户设备与该第二用户设备根据第三基序列生成参考信号序列所使用的循环移位不同；其中，该第三频域资源组是该至少一个频域资源组之一，该第三基序列是该第三频域资源组对应的基序列。
结合第一方面或第一方面的第一种可能的实现方式，在第二种可能的实现方式中，第一用户设备确定承载参考信号的符号上用于发送该参考信号的至少一个频域资源组所对应的至少一个基序列，具体实现为：该第一用户设备确定第一频域资源组对应的第一基序列，确定第二频域资源组对应的第二基序列；第一用户设备根据该至少一个基序列生成该参考信号，并映射到时域为发送该参考信号的符号、频域为该至少一个频域资源组的时频资源上，具体实现为：该第一用户设备根据该第一基序列生成该参考信号的第一参考信号序列，并映射到时域为该符号、频域为该第一频域资源组的时频资源上；该第一用户设备根据该第二基序列生成该参考信号的第二参考信号序列，并映射到时域为该符号、频域为该第二频域资源组的时频资源上。
结合第一方面的第二种可能的实现方式，在第三种可能的实现方式中，该第一用户设备生成该第一参考信号序列和该第二参考信号序列所使用的循环移位相同。
结合第一方面的第三种可能的实现方式，在第四种可能的实现方式中，具体实现为：该循环移位是基站通知该第一用户设备的；或者，该循环移位是该第一用户设备根据配置参数确定的，该配置参数包括该第一用户设备的用户设备特定配置参数、时域特定配置参数、小区特定配置参数和频域特定配置参数中的一种或多种，且该配置参数不能只包括小区特定配置参数或频域特定配置参数。
结合第一方面的上述可能的实现方式，在第四种可能的实现方式中，具体实现为：该频域资源组与该基序列的对应关系是基站和该第一用户设备预先约定的；或者，该频域资源组与该基序列的对应关系是基站发送给该第一用户设备的。
第二方面，提出了一种用户设备，用于执行第一方面或第一方面的任一方面的可能实现方式中的方法。
具体地，该用户设备可以包括用于执行第一方面或第一方面的任一可能的实现方式中的方法的单元。
第三方面，提出了另一种用户设备，包括存储器和处理器，该存储器用于存储指令，该处理器用于执行该存储器存储的指令，并且对该存储器中存储的指令的执行使得该处理器执行第一方面或第一方面的任意可能的实现方式中的方法。
第四方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序包括用于执行第一方面或第一方面的任意可能的实现方式中的方法的指令。
第五方面，提出了另一种参考信号的传输方法，该方法包括：用户设备接收基站发送的下行控制信令，该下行控制信令用于指示该用户设备在承载参考信号的符号上发送该参考信号的频域资源组；该用户设备生成参考信号序列并映射到时域为该符号、频域为该频域资源组的时频资源上。
结合第五方面，在第五方面的第一种可能的实现方式中，该方法还包括：用户设备根据该用户设备占用的频域资源和频域梳子确定该频域资源组，该频域资源组包括多个间隔均匀的梳齿(一个梳齿为一个子载波)。
结合第五方面，第五方面第一种可能实现的方式，在第五方面的第二种可能的实现方式中，该频域梳子用于从一段连续的频域资源中每隔N个子载波取出一个子载波，得到多个间隔均匀的梳齿(子载波)。
结合第五方面，第五方面第一种和第二种可能实现的方式，在第五方面的第三种可能的实现方式中，该梳齿结构也可以是每隔N个子载波取出M个连续的子载波，其中，多个M个子载波之间的间隔相等。
第六方面，提出了一种用户设备，用于执行第五方面或第五方面的任一方面的可能实现方式中的方法。
具体地，该用户设备可以包括用于执行第五方面或第五方面的任一可能的实现方式中的方法的单元。
第七方面，提出了另一种用户设备，包括存储器和处理器，该存储器用于存储指令，该处理器用于执行该存储器存储的指令，并且对该存储器中存储的指令的执行使得该处理器执行第五方面或第五方面的任意可能的实现方式中的方法。
第八方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序包括用于执行第五方面或第五方面的任意可能的实现方式中的方法的指令。
第九方面，提出了另一种参考信号的传输方法，该方法包括：用户设备确定承载用户设备的参考信号的频域资源，频域资源在频域上为等间隔分布的子载波，参考信号用于数据信道的解调；用户设备在频域资源上向基站发送参考信号，或者用户设备在频域资源上接收基站发送的参考信号。
结合第九方面，在第九方面的第一种可能的实现方式中，所述用户设备确定承载所述用户设备的参考信号的频域资源，包括：所述用户设备根据第一参数确定承载所述用户设备的参考信号的频域资源，其中，所述第一参数包括以下参数中的至少一种：所述用户设备特定参数、时域特定参数、小区特定参数、频域特定参数、来自基站的第一配置参数，来自基站的第一配置参数为所述基站向所述用户设备发送的配置信息，所述配置信息用于用户设备确定承载所述用户设备的参考信号的频域资源。
结合第九方面，第九方面第一种可能实现的方式，在第九方面的第二种可能的实现方式中，所述基站的第一配置参数包括以下参数中的至少一种：天线端口，传输梳齿的频域起始位置，传输梳齿索引，子载波集合索引。
结合第九方面，第九方面第一种和第二种可能实现的方式，在第九方面的第三种可能的实现方式中，所述用户设备根据第二参数确定所述参考信号的序列所使用的循环移位和/或正交码，其中，所述第二参数包括以下参数中的至少一种：用户设备特定参数、时域特定参数、小区特定参数、频域特定参数、来自基站的第二配置参数，所述来自基站的第二配置参数为所述基站向所述用户设备发送的配置信息，所述配置信息用于用户设备确定所述参考信号的序列所使用的循环移位和/或正交码。
结合第九方面，第九方面第一种至第三种可能实现的方式，在第九方面的第四种可能的实现方式中，所述来自基站的第二配置参数包括以下参数中的至少一种：天线端口，传输梳齿的频域起始位置，传输梳齿索引，子载波集合索引，循环移位标识，正交码标 识。
第十方面，提出了一种用户设备，用于执行第九方面或第九方面的任一方面的可能实现方式中的方法。
第十一方面，提出了另一种用户设备，包括存储器和处理器，该存储器用于存储指令，该处理器用于执行该存储器存储的指令，并且对该存储器中存储的指令的执行使得该处理器执行第九方面或第九方面的任意可能的实现方式中的方法。
第十二方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序包括用于执行第九方面或第九方面的任意可能的实现方式中的方法的指令。
第十三方面，提出了另一种参考信号的传输方法，该方法包括：基站向用户设备发送下行控制信息，该下行控制信令用于指示该用户设备在承载参考信号的符号上发送该参考信号的频域资源组；该基站在该频域资源组上接收该用户设备发送的参考信号。
结合第十三方面，在第十三方面的第一种可能的实现方式中，该下行控制信令中携带频域梳子的索引，该频域梳子的索引用于结合该用户设备的频域资源确定该频域资源组，该频域资源组包括多个间隔均匀的梳齿(一个梳齿为一个子载波)。
结合第十三方面，第十三方面第一种可能实现的方式，在第十三方面的第二种可能的实现方式中，该频域梳子对应于一种基序列，该频域梳子的索引还用于该用户设备确定用于生成参考信号序列的基序列。频域梳子与基序列之间的关系可以是多对一或一对一的对应关系。
结合第十三方面，第十三方面第一种和第二种可能实现的方式，在第十三方面的第三种可能的实现方式中，该基站通过UE-specific消息等发送该下行控制信令。
第十四方面，提出了一种基站，用于执行第十三方面或第十三方面的任一方面的可能实现方式中的方法。
具体地，该基站可以包括用于执行第十三方面或第十三方面的任一可能的实现方式中的方法的单元。
第十五方面，提出了另一种基站，包括存储器和处理器，该存储器用于存储指令，该处理器用于执行该存储器存储的指令，并且对该存储器中存储的指令的执行使得该处理器执行第十三方面或第十三方面的任意可能的实现方式中的方法。
第十六方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序包括用于执行第十三方面或第十三方面的任意可能的实现方式中的方法的指令。
第十七方面，提出了另一种参考信号的传输方法，该方法包括：基站向用户设备发送下行控制信息，该下行控制信息用于指示用户设备确定承载所述用户设备的参考信号的频域资源，所述频域资源在频域上为等间隔分布的子载波，所述参考信号用于数据信道的解调；基站在该频域资源上向用户设备发送该参考信号或基站接收该用户设备在该频域资源上发送的该参考信号。
结合第十七方面，在第十七方面的第一种可能的实现方式中，该下行控制信令携带第一参数，该第一参数用于确定承载用户设备的参考信号的频域资源，该第一参数包括以下参数中的至少一种：所述用户设备特定参数、时域特定参数、小区特定参数、频域特定参数、基站的第一配置参数，所述基站的第一配置参数为所述基站向所述用户设备发送的配置信息，所述配置信息用于用户设备确定承载所述用户设备的参考信号的频域资源。
结合第十七方面，第十七方面的第一种可能的实现方式，在第十七方面的第二种可能的实现方式中，该基站的第一配置参数包括以下参数中的至少一种：天线端口，传输梳齿的频域起始位置，传输梳齿索引，子载波集合索引。
结合第十七方面，第十七方面的第一种和第二种可能的实现方式，在第十七方面的第三种可能的实现方式中，该下行控制信令携带第二参数，该第二参数用于确定所述参考信号的序列所使用的循环移位和/或正交码，其中，所述第二参数包括以下参数中的至少一种：用户设备特定参数、时域特定参数、小区特定参数、频域特定参数、所述基站的第二配置参数，所述基站的第二配置参数为所述基站向所述用户设备发送的配置信息，所述配置信息用于用户设备确定所述参考信号的序列所使用的循环移位和/或正交码。
结合第十七方面，第十七方面的第一种至第三种可能的实现方式，在第十七方面的第四种可能的实现方式中，该基站的第二配置参数包括以下参数中的至少一种：天线端口，传输梳齿的频域起始位置，传输梳齿索引，子载波集合索引，循环移位标识，正交码标识。
第十八方面，提出了一种基站，用于执行第十七方面或第十七方面的任一方面的可能实现方式中的方法。
具体地，该基站可以包括用于执行第十七方面或第十七方面的任一可能的实现方式中的方法的单元。
第十九方面，提出了另一种基站，包括存储器和处理器，该存储器用于存储指令，该处理器用于执行该存储器存储的指令，并且对该存储器中存储的指令的执行使得该处理器执行第十七方面或第十七方面的任意可能的实现方式中的方法。
第二十方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序包括用于执行第十七方面或第十七方面的任意可能的实现方式中的方法的指令。
第二十一方面，提供了一种参考信号的传输方法，该方法包括：第一设备确定承载参考信号的符号上用于发送该参考信号的至少一个频域资源组所对应的至少一个参考信号生成序列，其中，一个该频域资源组对应于一个该参考信号生成序列；该第一设备根据该至少一个参考信号生成序列生成该参考信号，并映射到时域为该符号、频域为该至少一个频域资源组的时频资源上。
结合第二十一方面，在第一种可能的实现方式中，具体实现为：当该第一设备与第二设备都在时域为该符号、频域为第三频域资源组的时频资源上映射参考信号时，该第一设备与该第二设备根据第三参考信号生成序列生成参考信号所使用的循环移位或正交码不同；其中，该第三频域资源组是该至少一个频域资源组之一，该第三参考信号生成序列是该第三频域资源组对应的参考信号生成序列。
结合第二十一方面的第一种可能的实现方式，在第二种可能的实现方式中，具体实现为：该循环移位或正交码是该第一设备根据第一参数集合确定的，该第一参数集合中的参数包括用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数、组合参数中的一种或多种，该组合参数是用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数中的多种参数的组合；或者，当该第一设备为用户设备时，该循环移位或正交码是该第一设备连接的网络侧设备通知该第一设备的。
结合第二十一方面，在第三种可能的实现方式中，当该第一设备与第二设备都在时 域为该符号、频域为第三频域资源组的时频资源上映射参考信号时，该第一设备在该第三频域资源组对应的参考信号生成序列和该第二设备在该第三频域资源组对应的参考信号生成序列不同。
结合第二十一方面的第三种可能的实现方式，在第四种可能的实现方式中，该第一设备确定承载参考信号的符号上用于发送该参考信号的至少一个频域资源组所对应的至少一个参考信号生成序列，具体实现为：该第一设备确定第一频域资源组对应的第一参考信号生成序列，确定第二频域资源组对应的第二参考信号生成序列；其中，该第一设备根据该至少一个参考信号生成序列生成该参考信号，并映射到时域为发送该参考信号的符号、频域为该至少一个频域资源组的时频资源上，具体实现为：该第一设备根据该第一参考信号生成序列生成该参考信号的第一参考信号序列，并映射到时域为该符号、频域为该第一频域资源组的时频资源上；该第一设备根据该第二参考信号生成序列生成该参考信号的第二参考信号序列，并映射到时域为该符号、频域为该第二频域资源组的时频资源上。
结合第二十一方面的上述可能的实现方式，在第五种可能的实现方式中，具体实现为：该参考信号生成序列是该第一设备根据第二参数集合确定的，该第二参数集合中的参数包括用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数、组合参数中的一种或多种，该组合参数是用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数中的多种参数的组合；或者，该频域资源组与该参考信号生成序列的对应关系是预先约定的；或者，当该第一设备为用户设备时，该频域资源组与该参考信号生成序列的对应关系是该第一设备连接的网络侧设备发送给该第一设备的。
第二十二方面，提出了一种设备，用于执行第二十一方面或第第二十一方面的任一方面的可能实现方式中的方法。
具体地，该设备可以包括用于执行第第二十一方面或第第二十一方面的任一可能的实现方式中的方法的单元。
第二十三方面，提出了另一种设备，包括存储器和处理器，该存储器用于存储指令，该处理器用于执行该存储器存储的指令，并且对该存储器中存储的指令的执行使得该处理器执行第第二十一方面或第第二十一方面的任意可能的实现方式中的方法。
第二十四方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序包括用于执行第第二十一方面或第第二十一方面的任意可能的实现方式中的方法的指令。
第二十五方面，提出了一种通信系统，该通信系统包括用户设备，该用户设备包括第一方面或第一方面的任意可能的实现方式中的用户设备。
第二十六方面，提出了一种通信系统，该通信系统包括基站和用户设备，该用户设备是第二方面或第二方面的任意可能的实现方式中的用户设备，或者是第三方面或第三方面的任意可能的实现方式中的用户设备。
第二十七方面，提出了一种通信系统，该通信系统包括用户设备，该用户设备包括第九方面或第九方面的任意可能的实现方式中的用户设备。
第二十八方面，提出了一种通信系统，该通信系统包括设备，该设备是第二十二方面或第二十二方面的任意可能的实现方式中的设备，或者是第二十三方面或第二十三方 面的任意可能的实现方式中的设备。基于以上技术方案，一方面，通过根据不同的频域资源组确定不同的基序列，然后根据基序列生成参考序列并映射到对应的时频资源上，为不同带宽下不同UE实现RS的正交性提供了实现的可能，从而能够提高RS资源的复用效率，实现多用户RS资源的复用；另一方面，通过为不同的用户设备分配不同的频域资源组以发送参考信号，从而能够提高RS资源的复用效率，实现多用户RS资源的复用。
附图说明
图1是本发明实施例参考信号的传输方法示意图。
图2是本发明实施例的上行多用户的RS资源复用示意图。
图3是本发明实施例参考信号的传输方法示意图。
图4是本发明实施例参考信号的传输方法示意图。
图5是本发明实施例频域资源与频域梳齿的示意图。
图6是本发明实施例的多个用户设备使用FDM和CDM相结合的方法复用RS资源的示意图。
图7是本发明实施例参考信号的另一传输方法示意图。
图8是本发明实施例实体装置的结构示意图。
图9是本发明实施例参考信号的再一传输方法示意图。
图10是本发明实施例的上行多用户的另一RS资源复用示意图。
具体实施方式
下面将结合附图，对本发明实施例中的技术方案进行描述。
应理解，本发明实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，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、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)等。
终端(Terminal)，可以称之为用户设备(User Equipment，UE)、用户等，可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。
为了方便理解本发明实施例，首先在此介绍本发明实施例描述中会引入的几个要素。
空口资源定义为空口的时域和频域资源，通常以资源单元(Resource Element，RE)，资源块(Resource Block，RB)，符号(symbol)，子载波(subcarrier)，发送时间间隔(Transmission Time Interval，TTI)表示。空口资源可以从频域和时域进行划分，频域划分的最小资源粒度为子载波，时域划分的最小资源粒度为symbol。
一个RE表示一个symbol时间内一个子载波的资源，每个RE可以承载一定的信息。N个symbol在时间上组成一个TTI。一个TTI中的M个子载波合起来组成一个RB。
为了保证URLLc业务的低时延高可靠的要求，URLLc上行业务可以通过抢占或预留的方式，在短时TTI中灵活占用MBB上行业务的物理资源。这里说的短TTI是指时间上更短的子帧，目前LTE的一个子帧长度为1ms，而短TTI的子帧长度比1ms更短，例如可以是0.125ms或者其他时间长度。在这种短TTI中，由于时域符号数目的减少，在上行可以用于上行数据解调RS发射的符号很少，可能只有1个符号。因此，在多用户RS的场景中，两个用户设备间占用的时频资源可能存在重叠。此外，不同小区间的正交/准正交导频设计、UL/DL MU-MIMO配对UE占用不同带宽(带宽部分重叠)的场景也面临着类似的技术问题。如何实现多用户RS资源的复用，是本发明实施例所要解决的技术问题。
图1是本发明实施例参考信号的传输方法示意图。图1的方法由用户设备执行。
101，第一用户设备确定承载参考信号的符号上用于发送该参考信号的至少一个频域资源组所对应的至少一个基序列。
其中，一个频域资源组对应于一种基序列，每个频域资源组包括子载波个数相同的多个子载波。
应理解，本发明实施例中，一个频域资源组可以包括多个频域子载波，每个频域资源组包含的子载波个数相同。
应理解，本发明实施例中，用于承载参考信号的符号可以包括一个或多个符号。
应理解，一个基序列不等同于一种基序列，前者指基序列的个数，后者指基序列的类型。
第一用户设备在至少一个频域资源组发送参考信号，每个频域资源组发送一个该参考信号的一个参考信号序列，至少一个频域资源组上发送的至少一个参考信号序列组成该参考信号。每个参考信号序列由一个基序列生成，第一用户设备需要确定基序列个数与频域资源组的个数相同。一个频域资源组对应于一种基序列，不同频域资源组可以使用相同或不同的基序列，该至少一个基序列的类型总数小于或等于该至少一个基序列的个数。应理解，一个频域资源组对应于一种基序列，频域资源组与基序列的类型可以是一一对应的关系，也可以是多对一的关系。例如，一个频域资源组的索引对应于一种基序列的索引，频域资源组的索引可以与基序列的索引相关。一个具体的例子，频域资源组索引1、2、3对应于基序列索引1，频域资源组索引4对应于基序列索引2等等。也就是说，不同频域资源组可以使用相同或不同的基序列。用于发送该参考信号的至少一个频域资源组所对应的至少一个基序列的类型总数小于或等于该至少一个基序列的个数。
可选地，该频域资源组与该基序列的对应关系是基站和该用户设备预先约定的。
或者，可选地，该频域资源组与该基序列的对应关系是基站发送给该用户设备的。
102，该第一用户设备根据该至少一个基序列生成该参考信号，并映射到时域为该符号、频域为该至少一个频域资源组的时频资源上。
应理解，第一用户设备根据基序列生成参考信号，每个基序列生成参考信号的一个参考信号序列，所有生成的参考信号序列组成参考信号。
应理解，第一用户设备生成参考信号后，可将参考信号映射到发送参考信号的时频资源上，其中，该时频资源的时域是该符号(承载参考信号的符号)，频域是该至少一个频域资源组。
应理解，当第一用户设备将参考信号映射到时频资源后，即可发送该参考信号。
本发明实施例中，通过根据不同的频域资源组确定不同的基序列，根据基序列生成参考信号，并映射到对应的时频资源上，为不同带宽下不同UE实现RS的正交性提供了实现的可能，从而能够提高RS资源的复用效率，实现多用户RS资源的复用。
可选地，如果该第一用户设备与第二用户设备在该符号上复用第三频域资源组，则该用户设备与该第二用户设备根据第三基序列生成参考信号序列所使用的循环移位不同；其中，该第三频域资源组是该至少一个频域资源组之一，该第三基序列是该第三频域资源组对应的基序列。
本发明实施例中，通过为不同UE在相同频域资源组上的基序列配置不同的循环移位，能够使得不同带宽的UE在相同频域资源组上的RS正交，从而能够提高RS资源的复用效率，实现多用户RS资源的复用。
进一步地，步骤101具体实现为：该第一用户设备确定第一频域资源组对应的第一基序列，确定第二频域资源组对应的第二基序列；此时，步骤102具体实现为：该第一用户设备根据该第一基序列生成该参考信号的第一参考信号序列，并映射到时域为该符号、频域为该第一频域资源组的时频资源上；该第一用户设备根据该第二基序列生成该参考信号的第二参考信号序列，并映射到时域为该符号、频域为该第二频域资源组的时频资源上。
可选地，该第一用户设备生成该第一参考信号序列和该第二参考信号序列所使用的循环移位不同。
或者，可选地，该第一用户设备生成该第一参考信号序列和该第二参考信号序列所使用的循环移位相同。
进一步地，当该第一用户设备生成该第一参考信号序列和该第二参考信号序列所使用的循环移位相同时，该循环移位是该基站通知该用户设备的；或者，该循环移位是该用户设备根据配置参数确定的，该配置参数包括UE特定配置参数、时域特定配置参数、小区特定配置参数和频域特定配置参数中的一种或多种，且该配置参数不能只包括小区特定配置参数或频域特定配置参数。
下面，将结合具体的实施例，对本发明实施例的方法作进一步的描述。
图2是本发明实施例的上行多用户的RS资源复用示意图。如图1所示，该RB中，频域上包括频域资源组N～N+3共4个频域资源组，时域上包括0～6共7个符号。其中，UE1在时域为符号2、频域为频域资源组N～N+3的时频资源上发送数据，UE2在时域为符号4、5、频域为频域资源组N、N+1的时频资源上发送数据，UE3在时域为符号4、5、频域为频域资源组N+2、N+3的时频资源上发送数据。UE1、UE2、UE3都在符号3(灰色方格所示时频资源)发送参考信号，其中，UE1在时域为符号3、频域为频域资源组N～N+3的时频资源上发送参考信号，UE2在时域为符号3、频域为频域资源组N、N+1的时频资源上发送参考信号，UE3在时域为符号3、频域为频域资源组N+2、N+3的时频资源上发送参考信号。
本发明实施例中，一个参考信号可以包括根据一个基序列生成的一个参考信号序列，也可以包括根据多个基序列生成的多个参考信号序列。
本发明实施例中，一个频域资源组对应于一种基序列，多个不同的频域资源组可以对应于同一种基序列。其中，每个频域资源组可以包括一个或多个子载波。频域资源组与基序列的对应关系，例如，可以是频域资源组的索引与基序列的索引相关，等等。例 如，频域资源组索引1、2、3对应于基序列索引1，频域资源组索引5对应于基序列索引2等等。不妨假设图2中频域资源组N、N+1、N+2和N+3分别对应于基序列N’、N’+1、N’+2和N’+3。
此外，应理解，频域资源组和基序列的对应关系，可以是协议规定的，或者是基站和用户设备预先约定的，或者是基站通过配置消息通知给用户设备的，本发明实施例对此不作限制。
对于1个UE而言，该UE在占用的频域资源组上使用与该频域资源组对应的基序列生成参考信号的参考信号序列，并映射到该频域资源组对应的时频资源上。
以UE1为例，UE根据基序列N、N+1、N+2和N+3分别生成参考信号序列N’、N’+1、N’+2和N’+3，并分别映射到时域为符号3、频域为频域资源组N、N+1、N+2和N+3的时频资源上。
应理解，用户设备根据基序列生成参考信号序列所使用的循环移位，可以是基站通知用户设备的，也可以是用户设备根据配置参数确定的。该配置参数可包括用户设备的UE特定配置参数、时域特定配置参数、小区特定配置参数和频域特定配置参数中的一种或多种。应注意的是，该配置参数不能只包括小区特定配置参数或频域特定配置参数。
优选地，同一用户设备根据基序列生成参考信号序列所使用的循环移位相同。当同一用户设备所使用的循环移位相同时，基站可以只通知一种循环移位给用户设备，或者用户设备可以根据配置参数确定一种循环移位。
此外，在相同的频域资源组上，不同的用户设备使用同一基序列的不同循环移位产生各自的参考信号序列。例如，在频域资源组N上，UE1和UE2使用基序列N生成的参考信号序列使用的循环位移不同。
图2的各UE在各个频域资源组上使用的基序列和循环移位的一种具体示例如表1所示：
表1
Figure PCTCN2017072916-appb-000001
如表1所示，从一个UE角度看，发送数据对应的RS可以使用多个基序列的同一个循环移位，从而可以大大节省基站侧控制信令的开销。
本发明实施例中，通过用时频资源组隐式的指示生成参考信号所使用的基序列，能够提高RS资源的复用率，实现对多个用户设备的RS资源的复用，还能够保证多个用户间RS的正交性。
图3是本发明实施例参考信号的传输方法示意图。图3的方法由用户设备执行。
301，用户设备接收基站发送的下行控制信令，该下行控制信令用于指示该用户设备 在承载参考信号的符号上发送该参考信号的频域资源组，每个频域资源组包括子载波个数相同的多个子载波。
可选地，该下行控制信令为用户特定配置UE-specific消息。
302，该用户设备生成参考信号序列并映射到时域为该符号、频域为该频域资源组的时频资源上。
本发明实施例中，用户设备通过根据基站分配的频域资源组生成参考信号，能够使得不同用户设备使用不同的频域资源发送参考信号，从而能够提高RS资源的复用效率，实现多用户RS资源的复用。
可选地，该下行控制信令中携带频域梳子的索引。该方法还包括：用户设备根据该用户设备占用的频域资源和该频域梳子确定该频域资源组，该频域资源组包括多个间隔均匀的梳齿(一个梳齿为一个子载波)。频域梳子用于从一段连续的频域资源中每隔N个子载波取出一个子载波，得到多个间隔均匀的梳齿(子载波)。对于同一频域资源(带宽)，不同的频域梳子可以得到不同的可供使用的频域资源。通过为不同用户分配不同的频域梳子，可以使得用户设备在相同的带宽下得到不同的频域资源，以用于发送参考信号。
可选的，在一些实施例中，梳齿结构也可以是每N个子载波中的M个子载波，其中，该M个子载波之间的间隔均相等。
例如，M为2时，该梳齿结构可以为从每N个子载波中选取2个子载波，该2个子载波是连续的，该每2个子载波之间的间隔相等。
图4是本发明实施例的参考信号的传输方法示意图，图4的方法由用户设备执行。
401，用户设备确定承载所述用户设备的参考信号的频域资源，所述频域资源在频域上为等间隔分布的子载波，所述参考信号用于数据信道的解调。
可选的，在一些实施例中，该参考信号传输所用的天线端口和用该参考信号进行解调的数据信道的天线端口相关，一般来说，两者的天线端口号相同。
402，用户设备在频域资源上向基站发送参考信号，或者用户设备在频域资源上接收基站发送的参考信号。
可选的，在一些实施例中，该频域上等间隔分布的子载波可以为频域梳齿。
可选的，在一些实施例中，该梳齿结构也可以是每N个子载波中的M个子载波，其中，该M个子载波之间的间隔均相等。
可选的，在一些实施例中，用户设备可以根据第一参数确定承载用户设备的参考信号的频域资源。
可选的，在一些实施例中，该第一参数可以是用户设备特定参数、时域特定参数、小区特定参数、频域特定参数、来自基站的第一配置参数中的一种或多种。
应理解，该用户设备特定参数值能够标识用户设备的相关参数，例如，用户设备的标识信息，无线网络临时标识(Radio Network Temporary Identity，RNTI)等。
应理解，该小区特定参数值能够标识小区的相关参数，例如，该小区特定参数可以是小区标识信息等。
应理解，该时域特定参数值能够标识参考信号符号所处的时域位置，例如，该时域特定参数可以是子帧号，时隙号，迷你时隙号，符号等。
应理解，该频域特定参数值能够标识参考信号所处频域的位置，例如该频域特定参 数可以是资源块(resource block，RB)编号，资源块组(resource block group，RBG)编号，子载波编号，资源单元组(resource element group，REG)编号等。
可选的，在一些实施例中，该第一配置参数可以是基站向用户设备配置的参数或基站向用户设备配置的参数中的至少部分或全部。
可选的，在一些实施例中，该第一配置参数还可以是基站向用户设备配置的配置信息中的至少部分或全部的参数。
可选的，在一些实施例中，该第一配置参数用于确定承载所述用户设备的参考信号的频域资源。
可选的，在一些实施例中，基站的第一配置参数可以是天线端口，传输梳齿的频域起始位置，传输梳齿索引，子载波集合索引中的一种或多种。
可选的，在一些实施例中，用户设备可以根据第二参数确定参考信号的序列所实用的循环移位(Cyclic Shift，CS)和/或正交码(Orthogonal Cover Code，OCC)其中，第二参数为用户设备特定参数、时域特定参数、小区特定参数、频域特定参数、所述来自基站的第二配置参数中的一种或多种。
应理解，该用户设备特定参数值能够标识用户设备的相关参数，例如，用户设备的标识信息，无线网络临时标识(Radio Network Temporary Identity，RNTI)等。
应理解，该小区特定参数值能够标识小区的相关参数，例如，该小区特定参数可以是小区标识信息等。
应理解，该时域特定参数值能够标识参考信号符号所处的时域位置，例如，该时域特定参数可以是子帧号，时隙号，迷你时隙号，符号等。
应理解，该频域特定参数值能够标识参考信号所处频域的位置，例如该频域特定参数可以是资源块(resource block，RB)编号，资源块组(resource block group，RBG)编号，子载波编号，资源单元组(resource element group，REG)编号等。
可选的，在一些实施例中，该第二配置参数可以是基站向用户设备配置的参数或基站向用户设备配置的参数中的至少部分或全部。
可选的，在一些实施例中，该第二配置参数还可以是基站向用户设备配置的配置信息中的至少部分或全部的参数。
可选的，在一些实施例中，该第二配置参数用于确定所述参考信号的序列所使用的循环移位和/或正交码。
可选的，在一些实施例中，该第二配置参数可以为天线端口，传输梳齿的频域起始位置，传输梳齿索引，子载波集合索引，循环移位标识，正交码标识中的一种或多种。
应理解，上述第一参数和第二参数可以相同，也可以不同，也可以是部分包含的关系，例如，第一参数包含第二参数或第二参数包含第一参数，也可以是第一参数和第二参数中的部分参数相同。
例如，图5是本发明实施例频域资源与频域梳齿的示意图。如图5所示，根据频域梳子1(以第1个子载波为起点，之后每间隔1个子载波取出1个子载波)可以得到频域梳子1所示的一组频域梳齿，根据频域梳子2(以第2个子载波为起点，之后每间隔1个子载波取出1个子载波)可以得到频域梳子2所示的一组频域梳齿。对于同一频域资源(频域资源1)，根据不同的频域梳子可以得到不同的频域资源组，如图5所示。
进一步地，如果该用户设备和第二用户设备占用相同的频域资源，则该用户设备和 该第二用户设备使用的频域梳子不同。
如果用户设备和第二用户设备占用不同的频域资源，则该用户设备和该第二用户设备使用的频域梳子可以相同，可以不同，只要保证重叠的频域资源下不同用户设备使用不同的频域梳子即可。
本发明实施例的一种实现方式，该方法还包括：用户设备根据频域梳子确定基序列，并根据该基序列生成该参考信号序列，其中，该频域梳子对应于一种基序列。频域梳子与基序列之间可以是多对一或一对一的映射关系。
可选地，该频域梳子与该基序列的对应关系是基站和该用户设备预先约定的。
或者，可选地，该频域梳子与该基序列的对应关系是基站发送给该用户设备的。
本发明实施例的另一种实现方式，用户设备可采用现有FDM技术中根据基序列生成参考信号序列的方式，具体实现可参考现有技术，本发明实施例在此不再赘述。
可选的，在一些实施例中，当网络中存在多个用户设备，且该多个用户设备的参考信号需要满足正交或准正交，用户设备的频域资源相同或部分重叠的情况下，可使用频分多路复用(Frequency Division Multiplexing，FDM)或FDM和码分复用(Code Division Multiplexing，CDM)相结合的方法复用RS资源。FDM可使用梳齿结构，CDM可使用CS或者OCC或者两者相结合。
应理解，在参考信号满足正交时，可以看作参考信号的序列时完全不相关的，在参考信号满足准正交时，该准正交的参考信号之间有一定的相关性，但是相关性较低。
又例如，图6所示为本发明实施例的多个用户设备使用FDM和CDM相结合的方法复用RS资源的示意图，如图6所示，用户设备2、用户设备3和用户设备1频域资源部分重叠，用户设备4和用户设备1、2、3的频域资源均部分重叠，若此时FDM的方法只有两个梳齿，仅仅通过该两个梳齿无法使4个用户设备的RS均正交，则可通过FDM与CDM结合的复用方式使4个用户设备的RS均正交。如图6所示，用户设备1使用梳齿1结合第一种CS方法或第一种OCC方法，用户设备2使用梳齿2结合第一种CS方法或第一种OCC方法，用户设备3使用梳齿2结合第一种CS方法或第一种OCC方法，用户设备4使用梳齿1结合第二种CS方法或第二种OCC方法，这样，4个用户设备通过频域和码域的复用方法，使得用户设备间的RS相互正交。
本发明实施例中的多个用户设备不限于同一小区，用户设备可以处于相同小区也可以处于不同小区，同时用户设备的传输数据的方向可以相同也可以不相同，即该多个用户设备可以均为上行或者下行，也可以部分用户设备上行，部分用户设备下行。只要实际网络中有需要使上述多个用户设备之间的RS正交或准正交，均可以使用本实施例方案。
用户设备可以通过基站配置该用户设备的RS所使用的天线端口确定RS使用哪个梳齿，或者基站给用户配置传输梳齿的标识，或者类似于探测参考信号(Sounding Reference Signal，SRS)的指示方法，基站通过指示梳齿的频域起始位置，用户设备根据该频域起始位置确定所使用的梳齿。除此之外，基站还可通过将不同的梳齿看作为一些子载波集合，通过给用户设备配置子载波集合的序号来指示用户设备所占用梳齿。
用户设备的RS序列所使用的CS和/或OCC可以和RS的天线端口、传输梳齿、频域起始位置、子载波集合的序号等参数中的一项或多项相关。例如预定义RS的天线端口或传输梳齿或梳齿的频域起始位置或子载波集合的序号和CS和/或OCC标识是一一对应 的。在某些场景下，基站可以直接配置RS序列所使用的CS和/或OCC标识，这种情况下，该CS和/或OCC标识可能和RS的天线端口或传输梳齿或频域起始位置或子载波集合的序号所对应的CS和/或OCC标识不相同。
除了可能和上述参数相关以外，用户设备确定RS所使用的梳齿以及RS序列所采用的CS和/或OCC可能还和用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数一种或多种相关。图7是本发明实施例参考信号的传输方法示意图。图7的方法由基站执行。
701，基站向用户设备发送下行控制信息，该下行控制信令用于指示该用户设备在承载参考信号的符号上发送该参考信号的频域资源组，可选的，每个频域资源组包括子载波个数相同的多个子载波。
702，该基站在该频域资源组上接收该用户设备发送的参考信号。
本发明实施例中，基站通过为用户设备分配频域资源组以生成参考信号，能够使得不同用户设备使用不同的频域资源发送参考信号，从而能够提高RS资源的复用效率，实现多用户RS资源的复用。
可选地，该下行控制信令中携带频域梳子的索引，该频域梳子的索引用于结合该用户设备的频域资源确定该频域资源组，该频域资源组包括多个间隔均匀的梳齿(一个梳齿为一个子载波)。
可选地，该频域梳子对应于一种基序列，该频域梳子的索引还用于该用户设备确定用于生成参考信号序列的基序列。频域梳子与基序列之间的关系可以是多对一或一对一的对应关系。
可选地，该基站通过UE-specific消息等发送该下行控制信令。
本发明实施例还公开了一种用户设备1，用于执行图1所示实施例中第一用户设备执行的方法。具体地，用户设备1可以包括用于执行图1所示实施例中第一用户设备执行的方法的单元。
本发明实施例还公开了一种用户设备2，用于执行图3所示实施例中用户设备执行的方法。具体地，用户设备2可以包括用于执行图3所示实施例中用户设备执行的方法的单元。
本发明实施例还公开了一种用户设备3，用于执行图4所示实施例中用户设备执行的方法。具体地，用户设备3可以包括用于执行图4所示实施例中用户设备执行的方法的单元。
本发明实施例还公开了一种基站1，用于执行图7所示实施例中基站执行的方法。具体地，基站1可以包括用于执行图7所示实施例中基站执行的方法的单元。
本发明实施例还提出了一种用户设备4，用户设备4的实体装置结构示意图可如图8的实体装置800所示，包括处理器802、存储器803、发射机801和接收机804。
接收机804、发射机801、处理器802和存储器803通过总线806系统相互连接。总线806可以是ISA总线、PCI总线或EISA总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图8中仅用一个双向箭头表示，但并不表示仅有一根总线或一种类型的总线。具体的应用中，发射机801和接收机804可以耦合到天线805。
可选的，在一些实施例中，所述接收机804、发射机801、处理器802和存储器803之间还可以通过内部链接通路互相通信，传递控制和/或数据信号。存储器803，用于存 放程序。具体地，程序可以包括程序代码，所述程序代码包括计算机操作指令。存储器803可以包括只读存储器和随机存取存储器，并向处理器802提供指令和数据。存储器803可能包含高速随机存取存储器(random access memory，RAM)，也可能还包括非易失性存储器(non-volatile memory)，例如至少1个磁盘存储器。
处理器802，执行存储器803所存放的程序。
具体地，在用户设备4中，处理器802可用于执行图1所示实施例的方法，并实现第一用户设备在图1所示实施例的功能。
处理器802可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器802中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器802可以是通用处理器，包括中央处理器(Central Processing Unit，CPU)、网络处理器(Network Processor，NP)等；还可以是数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器803，处理器802读取存储器803中的信息，结合其硬件完成上述方法的步骤。
本发明实施例还提出了一种用户设备5，其实体装置结构示意图可如图8所示，其所包含的实体单元与用户设备4类似，不再赘述。
具体地，在用户设备5中，处理器802可用于执行图3所示实施例的方法，并实现用户设备在图3所示实施例的功能。
本发明实施例还提出一种用户设备6，其实体装置结构示意图可如图8所示，其所包含的实体单元与用户设备4类似，不再赘述。
具体地，在用户设备6中，处理器802可用于执行图4所示实施例的方法，并实现用户设备在图4所示实施例的功能。
本发明实施例还提出了一种基站2，其实体装置结构示意图可如图8所示，其所包含的实体单元与用户设备4类似，不再赘述。
具体地，在基站2中，处理器802可用于执行图7所示实施例的方法，并实现基站在图7所示实施例的功能。
本发明实施例提供一种参考信号的传输装置1，该装置包括处理器和存储器。
可选的，该装置1还包括接收器和发射器。
具体的，在装置1中，该存储器用于存储程序代码，该处理器用于调用该程序代码实现图1所示实施例的方法。
本发明实施例提供一种参考信号的传输装置2，该装置包括处理器和存储器。
可选的，该装置2还包括接收器和发射器。
具体的，在装置2中，该存储器用于存储程序代码，该处理器用于调用该程序代码实现图3所示实施例的方法。
本发明实施例提供一种参考信号的传输装置3，该装置包括处理器和存储器。
可选的，该装置3还包括接收器和发射器。
具体的，在装置3中，该存储器用于存储程序代码，该处理器用于调用该程序代码实现图4所示实施例的方法。
本发明实施例提供一种参考信号的传输装置4，该装置包括处理器和存储器。
可选的，该装置4还包括接收器和发射器。
具体的，在装置4中，该存储器用于存储程序代码，该处理器用于调用该程序代码实现图7所示实施例的方法。
本发明实施例还提出了一种计算机可读存储介质1，该计算机可读存储介质存储一个或多个程序，该一个或多个程序包括指令，该指令当被包括多个应用程序的便携式电子设备执行时，能够使该便携式电子设备执行图1所示实施例的方法。
本发明实施例还提出了一种计算机可读存储介质2，该计算机可读存储介质存储一个或多个程序，该一个或多个程序包括指令，该指令当被包括多个应用程序的便携式电子设备执行时，能够使该便携式电子设备执行图3所示实施例的方法。
本发明实施例还提出了一种计算机可读存储介质3，该计算机可读存储介质存储一个或多个程序，该一个或多个程序包括指令，该指令当被包括多个应用程序的便携式电子设备执行时，能够使该便携式电子设备执行图4所示实施例的方法。
本发明实施例还提出了一种计算机可读存储介质4，该计算机可读存储介质存储一个或多个程序，该一个或多个程序包括指令，该指令当被包括多个应用程序的便携式电子设备执行时，能够使该便携式电子设备执行图7所示实施例的方法。
本发明实施例还提供了一种通信系统，包括基站和用户设备，该用户设备可以是前述实施例中的用户设备1、用户设备2或用户设备3，该基站可以是前述实施例中的基站1或基站2。
图9是本发明实施例参考信号的传输方法示意图。图9的方法由第一设备执行，第一设备可以是用户设备或网络侧设备，如基站等。
901，第一设备确定承载参考信号的符号上用于发送所述参考信号的至少一个频域资源组所对应的至少一个参考信号生成序列。
其中，一个所述频域资源组对应于一个所述参考信号生成序列。
应理解，本发明实施例中，一个频域资源组可以包括多个频域子载波，每个频域资源组包含的子载波个数可以相同，也可以不同。
应理解，本发明实施例中，用于承载参考信号的符号可以包括一个或多个符号。
应理解，参考信号生成序列可以是不同类型的序列，例如可以是ZC序列，也可以是伪随机序列，还可以是其他满足相关性要求的序列，本发明实施例对此不做限制。
第一设备在至少一个频域资源组发送参考信号，每个频域资源组发送一个该参考信号的一个参考信号序列，至少一个频域资源组上发送的至少一个参考信号序列组成该参考信号。每个参考信号序列由一个参考信号生成序列生成，第一设备需要确定参考信号生成序列个数与频域资源组的个数相同。一个频域资源组对应于一个参考信号生成序列，不同频域资源组可以使用相同或不同的参考信号生成序列。应理解，一个频域资源组对应于一个参考信号生成序列，频域资源组与参考信号生成序列的对应关系可以是一一对应的关系，也可以是多对一的关系。例如，一个频域资源组的索引对应于一个参考信号 生成序列的索引，频域资源组的索引可以与参考信号生成序列的索引相关。一个具体的例子，频域资源组索引1、2、3对应于参考信号生成序列索引1，频域资源组索引4对应于基序列索引2等等。也就是说，不同频域资源组可以使用相同或不同的参考信号生成序列。
可选地，作为一个实施例，该参考信号生成序列是该第一设备根据第二参数集合确定的，该第二参数集合中的参数包括用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数、组合参数中的一种或多种，该组合参数是用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数中的多种参数的组合。
或者，可选地，作为另一个实施例，该频域资源组与该参考信号生成序列的对应关系是预先约定的。例如，协议可以规定参考信号生成序列与频域资源组的频域资源位置之间的映射关系表，等等。
或者，可选地，作为再一个实施例，当该第一设备为用户设备时，该频域资源组与该参考信号生成序列的对应关系是由网络侧设备发送给该第一用户设备的。
902，该第一设备根据该至少一个参考信号生成序列生成该参考信号，并映射到时域为该符号、频域为该至少一个频域资源组的时频资源上。
应理解，第一设备根据参考信号生成序列生成参考信号，每个参考信号生成序列生成参考信号的一个参考信号序列，所有生成的参考信号序列组成参考信号。
应理解，第一设备生成参考信号后，可将参考信号映射到发送参考信号的时频资源上，其中，该时频资源的时域是该符号(承载参考信号的符号)，频域是该至少一个频域资源组。
应理解，当第一设备将参考信号映射到时频资源后，即可发送该参考信号。
本发明实施例中，通过根据不同的频域资源组确定不同的参考信号生成序列，根据参考信号生成序列生成参考信号，并映射到对应的时频资源上，为不同带宽下不同设备实现RS的正交性/准正交性提供了实现的可能，从而能够提高RS资源的复用效率，实现多设备RS资源的复用。
可选地，作为一个实施例，当该第一设备与第二设备都在时域为该符号、频域为第三频域资源组映射参考信号，则该第一设备与该第二设备根据第三参考信号生成序列生成参考信号序列所使用的循环移位或正交码不同；其中，该第三频域资源组是该至少一个频域资源组之一，该第三参考信号生成序列是该第三频域资源组对应的参考信号生成序列。
可选地，在本实施例的一种具体实现方式中，该循环移位或正交码是该第一设备根据第一参数集合确定的，该第一参数集合中的参数包括用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数和网络侧配置参数中的一种或多种。
或者，可选地，在本实施例的另一种具体实现方式中，当该第一设备为用户设备时，该循环移位或正交码是该第一设备连接的网络侧设备通知该第一设备的。
可选地，作为另一个实施例，当该第一设备与第二设备都在时域为该符号、频域为第三频域资源组的时频资源上映射参考信号时，该第一设备在该第三频域资源组对应的参考信号生成序列和该第二设备在该第三频域资源组对应的参考信号生成序列不同。
例如，第三频域资源组是该至少一个频域资源组之一，第三参考信号生成序列是第一设备在第三频域资源组对应的参考信号生成序列，第四参考信号生成序列是第二设备在第三频域资源组对应的参考信号生成序列，第一设备与第二设备都在时域为该符号、频域为第三频域资源组映射参考信号，则该第一设备可根据第三参考信号生成序列生成参考信号，该第二设备可根据第四参考信号生成序列生成参考信号。
应理解，该第一设备可以是第一用户设备，该第二设备可以是第二用户设备，该第一用户设备和该第二用户设备可以连接/驻留在相同或不同的网络侧设备下；或者，该第一设备可以是第一网络侧设备，该第二设备可以是第二网络侧设备；或者，该第一设备可以是第一网络侧设备，该第二设备可以是第二用户设备，该第二用户设备连接/驻留的网络侧设备可以与第一网络侧设备相同或不同；或者，该第一设备可以是第一用户设备，该第二设备可以是第二网络侧设备，该第一用户设备连接/驻留的网络侧设备可以与第二网络侧设备相同或不同。
应理解，该网络侧设备可以是LTE中的演进型基站(Evolved Node B，eNB)，NR中的发送接收点(Transmission/Reception Point，TRP)等能够对上述用户设备进行调度和控制的设备。
可选地，作为一个实施例，该参考信号生成序列是该第一设备根据第二参数集合确定的，该第二参数集合中的参数包括用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数、组合参数中的一种或多种，该组合参数是用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数中的多种参数的组合。
可选地，作为另一个实施例，该频域资源组与该参考信号生成序列的对应关系是预先约定的。
可选地，作为再一个实施例，当该第一设备为用户设备时，该频域资源组与该参考信号生成序列的对应关系是该第一设备连接的网络侧设备发送给该第一设备的。
本发明实施例中，通过为不同设备在相同频域资源组上的参考信号生成序列配置不同的循环移位或正交码，或通过为不同设备在相同频域资源组上配置不同的参考信号生成序列，能够使得占用不同带宽传输的设备在相同频域资源组上的RS正交，从而能够提高RS资源的复用效率，实现多设备RS资源的复用。
进一步地，步骤901具体实现为：该第一设备确定第一频域资源组对应的第一参考信号生成序列，确定第二频域资源组对应的第二参考信号生成序列；此时，步骤902具体实现为：该第一设备根据该第一参考信号生成序列生成该参考信号的第一参考信号序列，并映射到时域为该符号、频域为该第一频域资源组的时频资源上；该第一用户设备根据该第二参考信号生成序列生成该参考信号的第二参考信号序列，并映射到时域为该符号、频域为该第二频域资源组的时频资源上。
应理解，该第一设备生成该第一参考信号序列和该第二参考信号序列所使用的循环移位或正交码可以相同或不同。
下面，将结合具体的实施例，对本发明实施例的方法作进一步的描述。
图10是本发明实施例的多设备的RS资源复用示意图。如图10所示，该RB中，频域上包括频域资源组N～N+3共4个频域资源组，时域上包括0～6共7个符号。其中，设备1在时域为符号2、频域为频域资源组N～N+3的时频资源上发送数据，设备2在时域 为符号4、5、频域为频域资源组N、N+1的时频资源上发送数据，设备3在时域为符号4、5、频域为频域资源组N+2、N+3的时频资源上发送数据。设备1、设备2、设备3都在符号3(灰色方格所示时频资源)发送参考信号，其中，设备1在时域为符号3、频域为频域资源组N～N+3的时频资源上发送参考信号，设备2在时域为符号3、频域为频域资源组N、N+1的时频资源上发送参考信号，设备3在时域为符号3、频域为频域资源组N+2、N+3的时频资源上发送参考信号。
本发明实施例中，一个参考信号可以包括根据一个参考信号生成序列生成的一个参考信号序列，也可以包括根据多个基序列生成的多个参考信号序列。
本发明实施例中，一个频域资源组对应于一个参考信号生成序列，多个不同的频域资源组中的每个频域资源组可以对应于不同的参考信号生成序列，也可以对应于相同的参考信号生成序列。其中，每个频域资源组可以包括一个或多个子载波。频域资源组与参考信号生成序列的对应关系，例如，可以是频域资源组的索引与参考信号生成序列的索引相关，等等。例如，频域资源组索引1、2、3对应于参考信号生成序列索引1，频域资源组索引5对应于参考信号生成序列索引2等等。不妨假设图10中频域资源组N、N+1、N+2和N+3分别对应于参考信号生成序列M0、M1、M2和M3。M0、M1、M2和M3可以相同，可以互不相同，也可以部分相同部分不同。
此外，应理解，设备在特定频域资源组上使用的参考信号生成序列，可以是设备根据第二参数集合确定的，所述第二参数集合中的参数包括用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数或组合参数中的一种或多种，其中，该组合参数是用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数中多种参数的特征的组合；或者，该第二参数集合可以是协议规定的；或者是当设备为用户设备时，由网络侧设备通过配置消息通知给用户设备的，本发明实施例对此不作限制。
对于1个设备而言，该设备在占用的频域资源组上使用与该频域资源组对应的参考信号生成序列生成参考信号的参考信号序列，并映射到该频域资源组对应的时频资源上。
以设备1为例，设备1根据参考信号生成序列M0、M1、M2和M3分别生成参考信号序列，并分别映射到时域为符号3、频域为频域资源组N、N+1、N+2和N+3的时频资源上。
应理解，设备根据参考信号生成序列生成参考信号序列时可能会用到相应的正交参数以保证不同设备间参考信号的正交性/准正交性。例如，当使用的参考信号生成序列为ZC序列时，所述正交参数为循环移位；当使用的参考信号生成序列为伪随机序列时，所述正交参数为正交码。所使用的正交参数，可以是设备根据第一参数集合确定的，所述第一参数集合中的参数包括用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数和网络侧配置参数中的一种或多种；当所述设备为用户设备时，可以是网络侧设备通知用户设备的，本发明实施例对此不作限制。
同一设备根据参考信号生成序列生成参考信号序列所使用的正交参数可以相同，也可以不同，优选地使用相同的正交参数。当同一设备所使用的正交参数相同时，设备可以根据参数确定一种循环移位；此时若设备为用户设备，则网络侧设备可以只通知一种正交参数给用户设备。
在相同的频域资源组上，不同的设备可以使用同一参考信号生成序列的不同正交参 数产生各自的参考信号序列。例如，在频域资源组N上，设备1和设备2使用参考信号生成序列M0生成的参考信号序列使用的正交参数不同。此外，在相同的频域资源组上，不同的设备可以使用不同参考信号生成序列产生各自的参考信号序列。例如，在频域资源组N上，设备1和设备2分别使用参考信号生成序列M01和M02生成各自的参考信号序列
图10的各设备在各个频域资源组上使用的参考信号生成序列和正交参数的其中五种具体示例如表2、3、4、5和6所示：
表2
Figure PCTCN2017072916-appb-000002
表3
Figure PCTCN2017072916-appb-000003
表4
Figure PCTCN2017072916-appb-000004
表5
Figure PCTCN2017072916-appb-000005
表6
Figure PCTCN2017072916-appb-000006
如表2所示，从一个设备角度看，发送数据对应的RS可以使用多个参考信号生成序列的同一个正交参数。
如表3所示，从一个设备角度看，发送数据对应的RS可以使用多个参考信号生成序列的不同正交参数。
如表4所示，从一个设备角度看，发送数据对应的RS可以在不同频域资源组上使用相同的参考信号生成序列。
如表5所示，从不同设备角度看，发送数据对应的RS可以在相同的频域资源组上使用不同的参考信号生成序列；从一个设备角度看，发送数据对应的RS可以在不同频域资源组上使用不同的参考信号生成序列。
如表6所示，从不同设备角度看，发送数据对应的RS可以在相同的频域资源组上使用不同的参考信号生成序列；从一个设备角度看，发送数据对应的RS可以在不同频域资源组上使用相同的参考信号生成序列。
本发明实施例中，通过用频域资源组对应生成参考信号所使用的参考信号生成序列，能够提高RS资源的复用率，实现对多个设备的RS资源的复用，还能够保证多个设备间RS的正交/准正交性。
本发明实施例还公开了一种设备1，用于执行图9所示实施例中第一设备执行的方法。该设备可以包括用于执行图9所示实施例中第一设备执行的方法的单元。
具体地，该设备可包括确定单元和信号生成单元，其中，确定单元用于确定承载参考信号的符号上用于发送该参考信号的至少一个频域资源组所对应的至少一个参考信号生成序列，其中，一个该频域资源组对应于一个该参考信号生成序列；信号生成单元，用于根据该至少一个参考信号生成序列生成该参考信号，并映射到时域为该符号、频域为该至少一个频域资源组的时频资源上。
可选地，作为一个实施例，当该第一设备与第二设备都在时域为该符号、频域为第三频域资源组的时频资源上映射参考信号时，该第一设备与该第二设备根据第三参考信号生成序列生成参考信号所使用的循环移位或正交码不同；其中，该第三频域资源组是该至少一个频域资源组之一，该第三参考信号生成序列是该第三频域资源组对应的参考信号生成序列。
可选地，在本实施例的一种实现方式中，该循环移位或正交码是该第一设备根据第一参数集合确定的，该第一参数集合中的参数包括用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数和网络侧配置参数中的一种或多种。
或者，可选地，在本实施例的另一种实现方式中，当该第一设备为用户设备时，该循环移位或正交码是该第一设备连接的网络侧设备通知该第一设备的。
可选地，作为另一个实施例，当该第一设备与第二设备都在时域为该符号、频域为第三频域资源组的时频资源上映射参考信号时，该第一设备在该第三频域资源组对应的参考信号生成序列和该第二设备在该第三频域资源组对应的参考信号生成序列不同。
可选地，该确定单元具体用于确定第一频域资源组对应的第一参考信号生成序列，确定第二频域资源组对应的第二参考信号生成序列；其中，该信号生成单元具体用于：根据该第一参考信号生成序列生成该参考信号的第一参考信号序列，并映射到时域为该符号、频域为该第一频域资源组的时频资源上；根据该第二参考信号生成序列生成该参考信号的第二参考信号序列，并映射到时域为该符号、频域为该第二频域资源组的时频资源上。
可选地，该参考信号生成序列是该设备根据第二参数集合确定的，该第二参数集合中的参数包括用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数、组合参数中的一种或多种，该组合参数是用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数中的多种参数的组合。
或者，可选地，该频域资源组与该参考信号生成序列的对应关系是预先约定的。
或者，可选地，当该设备为用户设备时，该频域资源组与该参考信号生成序列的对应关系是该设备连接的网络侧设备发送给该设备的。
本发明实施例还公开了一种设备2，该设备的实体装置结构示意图可如图8的实体装置800所示，包括处理器802、存储器803、发射机801和接收机804。
接收机804、发射机801、处理器802和存储器803通过总线806系统相互连接。总线806可以是ISA总线、PCI总线或EISA总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图6中仅用一个双向箭头表示，但并不表示仅有一根总线或一种类型的总线。具体的应用中，发射机801和接收机804可以耦合到天线805。
可选的，在一些实施例中，所述接收机804、发射机801、处理器802和存储器803之间还可以通过内部链接通路互相通信，传递控制和/或数据信号。
存储器803，用于存放程序。具体地，程序可以包括程序代码，所述程序代码包括计算机操作指令。存储器803可以包括只读存储器和随机存取存储器，并向处理器802提供指令和数据。存储器803可能包含高速RAM存储器，也可能还包括非易失性存储器(non-volatile memory)，例如至少1个磁盘存储器。
处理器802，执行存储器803所存放的程序。
具体地，在该设备中，处理器802用于执行以下方法：
确定承载参考信号的符号上用于发送该参考信号的至少一个频域资源组所对应的至少一个参考信号生成序列，其中，一个该频域资源组对应于一个该参考信号生成序列；
根据该至少一个参考信号生成序列生成该参考信号，并映射到时域为该符号、频域为该至少一个频域资源组的时频资源上。
上述如本发明实施例图9所示实施例揭示的第一设备执行的方法可以应用于处理器802中，或者由处理器802实现。处理器802可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器802中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器802可以是通用处理器，包括CPU、网络处理器(Network Processor，NP)等；还可以是DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器803，处理器802读取存储器803中的信息，结合其硬件完成上述方法的步骤。
可选地，作为一个实施例，当该第一设备与第二设备都在时域为该符号、频域为第三频域资源组映射参考信号，则该第一设备与该第二设备根据第三参考信号生成序列生成参考信号序列所使用的循环移位或正交码不同；其中，该第三频域资源组是该至少一个频域资源组之一，该第三参考信号生成序列是该第三频域资源组对应的参考信号生成序列。
可选地，在本实施例的一种具体实现方式中，该循环移位或正交码是该第一设备根据第一参数集合确定的，该第一参数集合中的参数包括用户设备特定参数、时域特定参 数、小区特定参数、网络侧设备特定参数、频域特定参数和网络侧配置参数中的一种或多种。
或者，可选地，在本实施例的另一种具体实现方式中，当该第一设备为用户设备时，该循环移位或正交码是该第一设备连接的网络侧设备通知该第一设备的。
可选地，作为另一个实施例，当该第一设备与第二设备都在时域为该符号、频域为第三频域资源组的时频资源上映射参考信号时，该第一设备在该第三频域资源组对应的参考信号生成序列和该第二设备在该第三频域资源组对应的参考信号生成序列不同。
可选地，作为一个实施例，该参考信号生成序列是该第一设备根据第二参数集合确定的，该第二参数集合中的参数包括用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数、组合参数中的一种或多种，该组合参数是用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数中的多种参数的组合。
可选地，作为另一个实施例，该频域资源组与该参考信号生成序列的对应关系是预先约定的。
可选地，作为再一个实施例，当该第一设备为用户设备时，该频域资源组与该参考信号生成序列的对应关系是该第一设备连接的网络侧设备发送给该第一设备的。
进一步地，处理器802确定承载参考信号的符号上用于发送该参考信号的至少一个频域资源组所对应的至少一个参考信号生成序列具体实现为：处理器802确定第一频域资源组对应的第一参考信号生成序列，确定第二频域资源组对应的第二参考信号生成序列；此时，处理器802根据该至少一个参考信号生成序列生成该参考信号，并映射到时域为该符号、频域为该至少一个频域资源组的时频资源上，具体实现为：处理器802根据该第一参考信号生成序列生成该参考信号的第一参考信号序列，并映射到时域为该符号、频域为该第一频域资源组的时频资源上；根据该第二参考信号生成序列生成该参考信号的第二参考信号序列，并映射到时域为该符号、频域为该第二频域资源组的时频资源上。
本发明实施例还提出了一种计算机可读存储介质4，该计算机可读存储介质存储一个或多个程序，该一个或多个程序包括指令，该指令当被包括多个应用程序的便携式电子设备执行时，能够使该便携式电子设备执行图9所示实施例的方法。
本发明实施例还提供了一种通信系统，包括前述的设备1或设备2。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明实施例的范围。
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仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一 点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明实施例各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明实施例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，仅为本发明实施例的具体实施方式，但本发明实施例的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明实施例揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明实施例的保护范围之内。因此，本发明实施例的保护范围应所述以权利要求的保护范围为准。

Claims (30)

  1. 一种参考信号的传输方法，其特征在于，所述方法包括：
    第一设备确定承载参考信号的符号上用于发送所述参考信号的至少一个频域资源组所对应的至少一个参考信号生成序列，其中，一个所述频域资源组对应于一个所述参考信号生成序列；
    所述第一设备根据所述至少一个参考信号生成序列生成所述参考信号，并映射到时域为所述符号、频域为所述至少一个频域资源组的时频资源上。
  2. 如权利要求1所述的方法，其特征在于，
    当所述第一设备与第二设备都在时域为所述符号、频域为第三频域资源组的时频资源上映射参考信号时，所述第一设备与所述第二设备根据第三参考信号生成序列生成参考信号所使用的循环移位或正交码不同；其中，所述第三频域资源组是所述至少一个频域资源组之一，所述第三参考信号生成序列是所述第三频域资源组对应的参考信号生成序列。
  3. 如权利要求2所述的方法，其特征在于，
    所述循环移位或正交码是所述第一设备根据第一参数集合确定的，所述第一参数集合中的参数包括用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数、组合参数中的一种或多种，所述组合参数是用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数中的多种参数的组合；或者
    当所述第一设备为用户设备时，所述循环移位或正交码是所述第一设备连接的网络侧设备通知所述第一设备的。
  4. 如权利要求1所述的方法，其特征在于，
    当所述第一设备与第二设备都在时域为所述符号、频域为第三频域资源组的时频资源上映射参考信号时，所述第一设备在所述第三频域资源组对应的参考信号生成序列和所述第二设备在所述第三频域资源组对应的参考信号生成序列不同。
  5. 一种设备，其特征在于，包括：
    确定单元，用于确定承载参考信号的符号上用于发送所述参考信号的至少一个频域资源组所对应的至少一个参考信号生成序列，其中，一个所述频域资源组对应于一个所述参考信号生成序列；
    信号生成单元，用于根据所述至少一个参考信号生成序列生成所述参考信号，并映射到时域为所述符号、频域为所述至少一个频域资源组的时频资源上。
  6. 如权利要求5所述的设备，其特征在于，
    当所述第一设备与第二设备都在时域为所述符号、频域为第三频域资源组的时频资源上映射参考信号时，所述第一设备与所述第二设备根据第三参考信号生成序列生成参考信号所使用的循环移位或正交码不同；其中，所述第三频域资源组是所述至少一个频域资源组之一，所述第三参考信号生成序列是所述第三频域资源组对应的参考信号生成序列。
  7. 如权利要求5或6所述的设备，其特征在于，
    所述确定单元具体用于确定第一频域资源组对应的第一参考信号生成序列，确定第二频域资源组对应的第二参考信号生成序列；
    其中，所述信号生成单元具体用于：根据所述第一参考信号生成序列生成所述参考信号的第一参考信号序列，并映射到时域为所述符号、频域为所述第一频域资源组的时频资源上；根据所述第二参考信号生成序列生成所述参考信号的第二参考信号序列，并映射到时域为所述符号、频域为所述第二频域资源组的时频资源上。
  8. 如权利要求5至7中任一项所述的设备，其特征在于，
    所述参考信号生成序列是所述设备根据第二参数集合确定的，所述第二参数集合中的参数包括用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数、组合参数中的一种或多种，所述组合参数是用户设备特定参数、时域特定参数、小区特定参数、网络侧设备特定参数、频域特定参数、网络侧配置参数中的多种参数的组合，或者
    所述频域资源组与所述参考信号生成序列的对应关系是预先约定的；或者
    当所述设备为用户设备时，所述频域资源组与所述参考信号生成序列的对应关系是所述设备连接的网络侧设备发送给所述设备的。
  9. 一种参考信号的传输方法，其特征在于，所述方法包括：用户设备确定承载所述用户设备的参考信号的频域资源，所述频域资源在频域上为等间隔分布的子载波，所述参考信号用于数据信道的解调；
    所述用户设备在所述频域资源上向基站发送所述参考信号，或者所述用户设备在所述频域资源上接收基站发送的所述参考信号。
  10. 如权利要求9所述的方法，其特征在于，所述用户设备确定承载所述用户设备的参考信号的频域资源，包括：
    所述用户设备根据第一参数确定承载所述用户设备的参考信号的频域资源，
    其中，所述第一参数包括以下参数中的至少一种：所述用户设备特定参数、时域特定参数、小区特定参数、频域特定参数、来自基站的第一配置参数。
  11. 如权利要求10所述的方法，其特征在于，所述来自基站的第一配置参数包括以下参数中的至少一种：天线端口，传输梳齿的频域起始位置，传输梳齿索引，子载波集合索引。
  12. 如权利要求9至11任一项所述的方法，其特征在于，所述用户设备根据第二参数确定所述参考信号的序列所使用的循环移位和/或正交码，
    其中，所述第二参数包括以下参数中的至少一种：用户设备特定参数、时域特定参数、小区特定参数、频域特定参数、所述来自基站的第二配置参数。
  13. 如权利要求12所述的方法，其特征在于，所述来自基站的第二配置参数包括以下参数中的至少一种：天线端口，传输梳齿的频域起始位置，传输梳齿索引，子载波集合索引，循环移位标识，正交码标识。
  14. 一种用户设备，其特征在于，所述用户设备包括：确定单元，用于确定承载所述用户设备的参考信号的频域资源，所述频域资源在频域上为等间隔分布的子载波，所述参考信号用于数据信道的解调；
    收发单元，用于在所述频域资源上向基站发送所述参考信号，或者在所述频域资源上接收基站发送的所述参考信号。
  15. 如权利要求14所述的用户设备，其特征在于，所述确定单元具体用于根据第一参数确定承载所述用户设备的参考信号的频域资源，
    其中，所述第一参数包括以下参数中的至少一种：所述用户设备特定参数、时域特定参数、小区特定参数、频域特定参数、来自基站的第一配置参数。
  16. 如权利要求15所述的用户设备，其特征在于，所述来自基站的第一配置参数包括以下参数中的至少一种：天线端口，传输梳齿的频域起始位置，传输梳齿索引，子载波集合索引。
  17. 如权利要求14至16中的任一项所述的用户设备，其特征在于，所述确定单元还用于根据第二参数确定所述参考信号的序列所使用的循环移位和/或正交码，
    其中，所述第二参数包括以下参数中的至少一种：用户设备特定参数、时域特定参数、小区特定参数、频域特定参数、来自基站的第二配置参数。
  18. 如权利要求17所述的用户设备，其特征在于，所述来自基站的第二配置参数包括以下参数中的至少一种：天线端口，传输梳齿的频域起始位置，传输梳齿索引，子载波集合索引，循环移位标识，正交码标识。
  19. 一种参考信号的传输方法，其特征在于，所述方法包括：
    第一用户设备确定承载参考信号的符号上用于发送所述参考信号的至少一个频域资源组所对应的至少一个基序列，其中，一个所述频域资源组对应于一种所述基序列；
    所述用户设备根据所述至少一个基序列生成所述参考信号，并映射到时域为所述符号、频域为所述至少一个频域资源组的时频资源上。
  20. 如权利要求19所述的方法，其特征在于，
    如果所述第一用户设备与第二用户设备都在第三频域资源组生成参考信号序列，则所述第一用户设备与所述第二用户设备根据第三基序列生成参考信号序列所使用的循环移位不同；其中，所述第三频域资源组是所述至少一个频域资源组之一，所述第三基序列是所述第三频域资源组对应的基序列。
  21. 如权利要求19或20所述的方法，其特征在于，
    第一用户设备确定承载参考信号的符号上用于发送所述参考信号的至少一个频域资源组所对应的至少一个基序列包括：所述第一用户设备确定第一频域资源组对应的第一基序列，确定第二频域资源组对应的第二基序列；
    所述第一用户设备根据所述至少一个基序列生成所述参考信号，并映射到时域为发送所述参考信号的符号、频域为所述至少一个频域资源组的时频资源上包括：所述第一用户设备根据所述第一基序列生成所述参考信号的第一参考信号序列，并映射到时域为所述符号、频域为所述第一频域资源组的时频资源上；所述第一用户设备根据所述第二基序列生成所述参考信号的第二参考信号序列，并映射到时域为所述符号、频域为所述第二频域资源组的时频资源上。
  22. 如权利要求21所述的方法，其特征在于，
    所述第一用户设备生成所述第一参考信号序列和所述第二参考信号序列所使用的循环移位相同。
  23. 如权利要求22所述的方法，其特征在于，
    所述循环移位是所述基站通知所述第一用户设备的；或者
    所述循环移位是所述第一用户设备根据配置参数确定的，所述配置参数包括所述第一用户设备的用户设备特定配置参数、时域特定配置参数、小区特定配置参数和频域特定配置参数中的一种或多种，且所述配置参数不能只包括小区特定配置参数或频域特定 配置参数。
  24. 一种用户设备，其特征在于，
    确定单元，用于确定承载参考信号的符号上用于发送所述参考信号的至少一个频域资源组所对应的至少一个基序列，其中，一个所述频域资源组对应于一种所述基序列；
    信号生成单元，用于根据所述至少一个基序列生成参考信号，并映射到时域为所述符号、频域为所述至少一个频域资源组的时频资源上。
  25. 如权利要求24所述的用户设备，其特征在于，
    如果所述用户设备与第二用户设备都在第三频域资源组生成参考信号序列，则所述用户设备与所述第二用户设备根据第三基序列生成参考信号序列所使用的循环移位不同；其中，所述第三频域资源组是所述至少一个频域资源组之一，所述第三基序列是所述第三频域资源组对应的基序列。
  26. 如权利要求24或25所述的用户设备，其特征在于，
    所述确定单元具体用于确定第一频域资源组对应的第一参考序列，并确定第二频域资源组对应的第二参考序列；
    所述信号生成单元具体用于：根据所述第一基序列生成所述参考信号的第一参考信号序列，并映射到时域为所述符号、频域为所述第一频域资源组的时频资源上；根据所述第二基序列生成所述参考信号的第二参考信号序列，并映射到时域为所述符号、频域为所述第二频域资源组的时频资源上。
  27. 如权利要求24至26任一项所述的用户设备，其特征在于，所述频域资源组与所述参考序列的对应关系是基站和所述用户设备预先约定的；或者
    所述频域资源组与所述参考序列的对应关系是基站发送给所述用户设备的。
  28. 一种通信系统，其特征在于，包括：
    如权利要求5-8任一项所述的设备。
  29. 一种通信系统，其特征在于，包括：
    如权利要求14-18中任一项所述的设备
  30. 一种通信系统，其特征在于，包括：
    基站和如权利要求24-26任一项所述的用户设备。
PCT/CN2017/072916 2016-04-08 2017-02-04 参考信号的传输方法、设备和系统 WO2017173881A1 (zh)

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