WO2018053801A1 - 一种资源映射方法、发送端以及接收端 - Google Patents

一种资源映射方法、发送端以及接收端 Download PDF

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Publication number
WO2018053801A1
WO2018053801A1 PCT/CN2016/099858 CN2016099858W WO2018053801A1 WO 2018053801 A1 WO2018053801 A1 WO 2018053801A1 CN 2016099858 W CN2016099858 W CN 2016099858W WO 2018053801 A1 WO2018053801 A1 WO 2018053801A1
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Prior art keywords
reference signal
information
time
moving speed
subcarrier spacing
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PCT/CN2016/099858
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English (en)
French (fr)
Inventor
张永平
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201680088063.4A priority Critical patent/CN109644168B/zh
Priority to EP16916540.4A priority patent/EP3509258A4/en
Priority to KR1020217023111A priority patent/KR20210093392A/ko
Priority to KR1020197010928A priority patent/KR20190049864A/ko
Priority to PCT/CN2016/099858 priority patent/WO2018053801A1/zh
Priority to JP2019515815A priority patent/JP7118954B2/ja
Priority to CN202310386447.6A priority patent/CN116488782A/zh
Priority to BR112019005538-0A priority patent/BR112019005538B1/pt
Publication of WO2018053801A1 publication Critical patent/WO2018053801A1/zh
Priority to US16/362,087 priority patent/US10924236B2/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2647Arrangements specific to the receiver only
    • H04L27/2655Synchronisation arrangements
    • H04L27/2666Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/26025Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202Channel estimation
    • H04L25/0224Channel estimation using sounding signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/261Details of reference signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/261Details of reference signals
    • H04L27/2613Structure of the reference signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • H04L5/0094Indication of how sub-channels of the path are allocated
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling

Definitions

  • the present invention relates to the field of communications, and in particular, to a resource mapping method, a transmitting end, and a receiving end.
  • full-band access will be implemented (including the existing frequency band below 6GHz, and the frequency band above 6GHz, up to the 100GHz frequency band), while the frequency band above 6GHz, especially the millimeter wave band, is not in the hardware.
  • Ideality introduces phase noise, which causes inter-carrier interference (ICI) in OFDM (Orthogonal Frequency-Division Multiplexing) system, which greatly degrades the communication quality of the system.
  • ICI inter-carrier interference
  • OFDM Orthogonal Frequency-Division Multiplexing
  • the configuration of different subcarrier spacing is adopted, so that when the system works in the high frequency band, the OFDM configuration parameters with larger subcarrier spacing will be adopted; on the contrary, when the system works in the low frequency band, OFDM configuration parameters with small subcarrier spacing are used.
  • the receiver in order to ensure that the receiver can correctly demodulate the signal, it is necessary to transmit some data while interpolating and transmitting some reference signals to assist the receiver in correctly estimating the channel information, and using the estimated channel information to balance.
  • the channel influence on the received data is removed, and the receiving effect of the receiver is improved.
  • the insertion interval of the reference signal is matched to the coherence bandwidth of the channel in the frequency domain, and is matched with the coherence time of the channel in the time domain.
  • the 5G system will work at different frequencies in the future, different subcarrier spacing configurations will be used. If the fixed mapping method is continued in the high and low frequency systems, the density of the reference signal will be too small or too dense. Then, based on the received reference information, channel estimation is performed, and the obtained equivalent channel parameters are not accurate enough.
  • the embodiment of the present invention provides a resource mapping method, a transmitting end, and a receiving end, which are used by the transmitting end to determine the density of the reference signal in the frequency domain and the time domain according to the configuration parameters of the subcarrier spacing. Degree, so that the density of the reference signal can be matched with the coherent bandwidth and coherence time of the corresponding channel after considering the system operating at different frequencies using different sub-carrier intervals, and the reference signal is mapped or received to meet the transmission and reception requirements of the communication system.
  • the present invention is mainly applicable to a communication system, including a transmitting end and a receiving end.
  • the network element involved in the transmitting end may include a base station, a wireless access point, and a user equipment UE.
  • the network elements involved in the receiving end may include user equipment, terminals, and mobiles.
  • a first aspect of the embodiments of the present invention provides a method for resource mapping, which may include: the transmitting end first determines the scheduled time-frequency resource, and the information about the time-frequency resource that the sending end acquires the scheduling may include, but is not limited to, a sub-carrier spacing configuration. Parameter information, frequency information of current system operation, current speed supported by the system, and scheduled bandwidth information; the sender may further configure parameter information, frequency information of the current working, and currently supported mobile according to the subcarrier spacing configuration.
  • the resource location of the time domain/frequency domain of the mapping reference signal determined by the transmitting end, the reference signal is mapped in the time domain/frequency domain resource location, and the density of the transmitting reference signal is determined according to the child.
  • the information including the configuration parameters of the carrier spacing, determines the density of the reference signal in the frequency domain and the time domain. Then, the density of the reference signal in the frequency domain and the time domain can be changed, so that the density of the reference signal can still be coherent bandwidth and coherence time with the corresponding channel after considering that the system operates at different frequency and adopt different subcarrier spacing. Matching to meet the transceiver requirements of the communication system.
  • the sending end configures parameter information, the current working frequency information, and the currently supported Determining the resource location of the time domain/frequency domain of the mapping reference signal by using at least one of the moving speed and the scheduled bandwidth information may include: the transmitting end configuring the parameter information according to the subcarrier spacing, the current working frequency Determining an interval of the reference signal by at least one of information, the currently supported moving speed, and the scheduled bandwidth information; the transmitting end is based on the reference signal The interval determines the resource location of the time domain/frequency domain of the mapping reference signal.
  • the transmitting end may determine the interval of the reference signal according to the information of the sub-carrier spacing configuration parameter, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information, where reference is made herein.
  • the spacing of the signals is an indication of the reference signal density.
  • the interval of the reference signal may include an interval in the time dimension and an interval in the frequency dimension. The resource location of the time domain/frequency domain of the mapping reference signal is then determined according to the determined interval of the reference signal.
  • the sending end configures parameter information, frequency information of the current working, and the currently supported
  • the at least one of the moving speed and the scheduled bandwidth information to determine the time domain/frequency domain resource location of the transmitting reference signal may include: the transmitting end configuring the parameter information according to the subcarrier spacing, the current working frequency
  • the at least one of the information, the currently supported moving speed, and the scheduled bandwidth information determines the time domain/frequency domain resource location of the mapping reference signal according to a preset rule. It should be understood that the preset rule here Both the sender and the receiver are known in advance.
  • the transmitting end determines the resource location of the time domain/frequency domain of the transmitting reference signal according to the preset rule, which is a static configuration, and the transmitting end configures the time domain/frequency domain resource of the mapping reference signal according to the preset rule.
  • the location, the receiving end also configures the time domain/frequency domain resource location of the received reference signal according to a preset rule.
  • the preset rule is a rule that is both known by the sender and the receiver, and provides an optional implementation manner for the embodiment of the present invention.
  • any one of the first to second implementation manners of the first aspect of the embodiments of the present invention, in a third implementation manner of the first aspect of the embodiment of the present invention is represented by (k, l), k is a subcarrier number of the reference signal, and l is an orthogonal frequency division multiplexing OFDM symbol number of the reference signal;
  • the transmitting end determines the resource location of the time domain/frequency domain of the mapping reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information. , can include the following situations:
  • the transmitting end determines the subcarrier number k of the mapping reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information,
  • the OFDM symbol number 1 is a first preset value
  • the transmitting end configures parameter information, frequency information of the current working, according to the subcarrier spacing, Determining, by at least one of the currently supported moving speed and the scheduled bandwidth information, an OFDM symbol number 1 of the mapping reference signal, where the subcarrier number k is a second preset value;
  • the transmitting end determines the subcarrier number k of the mapping reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information. OFDM symbol number l.
  • the transmitting end may determine the subcarrier number k and the OFDM symbol number of the mapping reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information. Or determining a subcarrier number k of the mapping reference signal, the OFDM symbol number 1 being a fixed value; or determining an OFDM symbol number 1 of the mapping reference signal, wherein the subcarrier number k is a fixed value. Further specifically, the implementation of the resource location of the time domain/frequency domain of the mapping reference signal is provided.
  • any one of the first to second implementation manners of the first aspect of the embodiments of the present invention in a fourth implementation manner of the first aspect of the embodiments of the present invention may further include: if the transmitting end includes a base station, the sending end sends the configuration information of the reference signal position to the receiving end; or, if the transmitting end includes the user equipment, the transmitting end receives the reference signal The configuration information of the location, and determining the resource location of the time domain/frequency domain of the mapping reference signal according to the configuration information of the reference signal location.
  • a second aspect of the embodiments of the present invention provides a resource mapping method, which may include: a receiving end first determines a scheduled time-frequency resource, and a receiving end acquires a scheduled time-frequency resource related information, including but not limited to a sub-carrier spacing configuration parameter. Information, current working frequency information, currently supported moving speed, and scheduled bandwidth information; the receiving end may further configure parameter information, the currently working frequency information, the currently supported moving speed, and the At least one of the scheduled bandwidth information is used to determine a resource location of the time domain/frequency domain of the received reference signal; the receiving end receives the reference signal transmitted by the transmitting end at the resource location of the time domain/frequency domain.
  • the resource location of the time domain/frequency domain of the received reference signal determined by the receiving end is actually determining the density of the received reference signal, and determining the reference signal according to the information of the configuration parameter of the subcarrier spacing. Density in the frequency and time domains. Then, the reference signal is in the frequency domain, The density in the time domain can be changed, so that the density of the reference signal can be matched with the coherence bandwidth and coherence time of the corresponding channel after considering the system operating at different frequencies using different subcarrier spacings, and satisfying the transmission and reception of the communication system. Claim.
  • the receiving end configures parameter information, the current working frequency information, and the currently supported Determining the resource location of the time domain/frequency domain of the received reference signal by using at least one of the moving speed and the scheduled bandwidth information may include: the receiving end configuring the parameter information according to the subcarrier spacing, the current working frequency Determining an interval of the reference signal by using at least one of information, the currently supported moving speed, and the scheduled bandwidth information; the receiving end determines a time domain/frequency domain of the received reference signal according to an interval of the reference signal Resource location.
  • the receiving end may determine the interval of the reference signal according to the information of the sub-carrier spacing configuration parameter, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information, where reference is made herein.
  • the spacing of the signals is an indication of the reference signal density.
  • the interval of the reference signal may include an interval in the time dimension and an interval in the frequency dimension. The resource location of the time domain/frequency domain of the received reference signal is then determined according to the determined interval of the reference signal.
  • the receiving end configures parameter information, frequency information of the current working, and the currently supported
  • the at least one of the moving speed and the scheduled bandwidth information is used to determine a resource location of the time domain/frequency domain of the received reference signal, including: the receiving end configuring parameter information, the current working frequency information according to the subcarrier spacing
  • the at least one of the currently supported moving speed and the scheduled bandwidth information determines the time domain/frequency domain resource location of the received reference signal according to a preset rule. It should be understood that the preset rule is sent here. Both the terminal and the receiving end are known in advance.
  • the receiving end determines the resource location of the time domain/frequency domain of the received reference signal according to the preset rule, which is a static configuration, and the receiving end configures the time domain/frequency domain resource of the received reference signal according to the preset rule.
  • the location, the sender also configures the time domain/frequency domain resource location of the transmitted reference signal according to a preset rule.
  • the preset rule is a rule that is both known by the sender and the receiver, and provides an optional implementation manner for the embodiment of the present invention.
  • any one of the first to second implementation manners of the second aspect of the embodiment of the present invention in a third implementation manner of the second aspect of the embodiment of the present invention , is represented by (k, l), k is a subcarrier number of the reference signal, and l is an OFDM symbol number of the reference signal; and the receiving end configures parameter information according to the subcarrier spacing. And determining, by at least one of the current working frequency information, the currently supported moving speed, and the scheduled bandwidth information, the resource location of the time domain/frequency domain of the received reference signal, which may include the following situations:
  • the receiving end determines the subcarrier number k of the received reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently operating frequency information, the currently supported moving speed, and the scheduled bandwidth information,
  • the OFDM symbol number 1 is a first preset value
  • the receiving end determines the OFDM symbol number l of the received reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information,
  • the subcarrier number k is a second preset value
  • the receiving end determines the subcarrier number k of the received reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information. OFDM symbol number l.
  • the receiving end may determine the subcarrier number k and the OFDM symbol number of the received reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information. Or determining the subcarrier number k of the received reference signal, the OFDM symbol number 1 being a fixed value; or determining the OFDM symbol number 1 of the received reference signal, wherein the subcarrier number k is a fixed value. Further specifically, the implementation of the resource location of the time domain/frequency domain of the received reference signal is provided.
  • any one of the first to second implementation manners of the second aspect of the embodiments of the present invention in a fourth implementation manner of the second aspect of the embodiments of the present invention may further include: if the receiving end includes a base station, the receiving end sends configuration information of the reference signal position to the transmitting end, where configuration information of the reference signal position is used by the transmitting end to determine a time domain of the mapping reference signal Or the resource location of the frequency domain; or, if the receiving end includes the user equipment, the receiving end receives the configuration information of the reference signal position sent by the transmitting end, and determines the time when the reference signal is received according to the configuration information of the reference signal position Resource location of the domain/frequency domain.
  • a third aspect of the embodiments of the present invention provides a transmitting end, which has a function of realizing a time-frequency resource position corresponding to the implementation of determining the mapping reference signal provided by the foregoing first aspect, and mapping the reference signal.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • a fourth aspect of the embodiments of the present invention provides a receiving end, which has a function of implementing a time-frequency resource position corresponding to the implementation of determining the received reference signal according to the foregoing second aspect, and receiving a reference signal.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • a fifth aspect of the embodiments of the present invention provides a transmitting end, which may include: a transceiver, a processor, a memory, and a bus, where the transceiver, the processor, and the memory are connected through the bus;
  • the memory is configured to store an operation instruction
  • the processor is configured to acquire at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information; and configuring parameter information, the current working frequency according to the subcarrier spacing Determining a time-frequency resource location of the mapping reference signal by at least one of information, the currently supported moving speed, and the scheduled bandwidth information;
  • the transceiver is configured to map the reference signal at the time-frequency resource location.
  • a sixth aspect of the embodiments of the present invention provides a receiving end, which may include: a transceiver, a processor, a memory, and a bus, where the transceiver, the processor, and the memory are connected through the bus;
  • the memory is configured to store an operation instruction
  • the processor is configured to acquire at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information; and configuring parameter information, the current working frequency according to the subcarrier spacing Determining a time-frequency resource location of the received reference signal by at least one of information, the currently supported moving speed, and the scheduled bandwidth information;
  • the transceiver is configured to receive a reference signal transmitted by the transmitting end at the time-frequency resource location.
  • a seventh aspect of the embodiments of the present invention provides a storage medium. It should be noted that the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be implemented by software.
  • the computer software product is stored in a storage medium for storing computer software instructions for use in the above apparatus, comprising: for performing the above first aspect, the second aspect or the third aspect or the fourth aspect for receiving The program designed by the terminal or the sender.
  • the 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.
  • the embodiment of the present invention has the following advantages:
  • the transmitting end acquires at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information; the transmitting end configures parameter information according to the subcarrier spacing, and currently The at least one of the working frequency information, the currently supported moving speed, and the scheduled bandwidth information determines a time-frequency resource location of the mapping reference signal; and the transmitting end maps the reference signal at the time-frequency resource location. Then, the transmitting end determines the density of the reference signal in the frequency domain and the time domain according to the configuration parameter information of the subcarrier spacing, so that the density of the reference signal can still be compared with the use of different subcarrier spacings when the system works at different frequencies. The coherence bandwidth and the coherence time of the corresponding channel are matched, and the reference signal is mapped to meet the transmission and reception requirements of the communication system.
  • FIG. 1 is a schematic diagram of an embodiment of inserting a reference signal according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an embodiment of a scenario applied in an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of an embodiment of a resource mapping method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of another embodiment of a resource mapping method according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of another embodiment of a resource mapping method according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of another embodiment of a resource mapping method according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of an embodiment of a transmitting end according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of an embodiment of a receiving end according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of an embodiment of a base station according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of an embodiment of a user equipment according to an embodiment of the present invention.
  • LTE Long Term Evolution
  • the frame contains 14 OFDM symbols, and the duration of one subframe is 1 ms.
  • Insertion of reference signal As shown in FIG. 1, a reference signal R 5 is placed every 4 equally spaced OFDM symbols in one subframe, that is, in the data portion (in LTE, the first 3 OFDM of each subframe) The symbol is used to transmit the control channel, and the control channel is received based on the Common Reference Signal (CRS, Cell Reference Signal).
  • CRS Common Reference Signal
  • Cell Reference Signal Common Reference Signal
  • the reference signal is inserted every 2 OFDM symbols; in frequency, every frequency Three subcarriers are inserted into the reference signal.
  • Orthogonal frequency-division multiplexing can split the wideband channel into flat fading subchannels, which can effectively resist the frequency selective fading in the wideband channel, so that the system can achieve high spectral efficiency.
  • OFDM is the most popular multiplexing method in communication systems.
  • the future 5G systems will also adopt OFDM or OFDM-based improvement schemes as multiplexing methods.
  • different subcarrier spacing configurations can be used. If a fixed mapping method is adopted in the high and low frequency systems, the density of the reference signal will be too small or too dense.
  • the high and low frequencies use the method in Figure 1, then there is not much problem in the low frequency system, but in the high frequency system, due to the larger subcarrier spacing, the interval of the reference signal will become larger, for example, In the high-frequency system, the sub-carrier spacing is 120KHz. In this case, the interval of the reference signal is in the frequency domain, which is 8 times that of the original LTE system. Since the high-frequency channel still has a certain frequency selectivity, the reference signal is The frequency domain is too sparse; the reference signal interval is at time On top, there is only 1/8 of the LTE system. Since high-frequency systems are generally considered to be mainly used in low-speed scenes, the speed of support is much lower than that of low-frequency systems, which causes the reference signals to be too dense in time.
  • the scenario diagram of the embodiment of the present invention is shown in FIG. 2.
  • the present invention is mainly applicable to a communication system, including a transmitting end and a receiving end. It should be understood that FIG. 2 is only one schematic diagram of one of the scenarios applied by the present invention.
  • the transmission between the transmitting end and the receiving end can be transmitted by radio waves or by transmission media such as visible light, laser, infrared or optical fiber.
  • the network element involved in the sending end may include a base station, a wireless access point, and a user equipment UE.
  • the network element involved in the receiving end may include a user equipment, a terminal, a mobile station (MS), or a base station.
  • the transmitting end is a base station
  • the receiving end is a user equipment
  • the receiving end is a base station.
  • the base station determines the interval of the reference signal in the frequency domain and the time domain based on the determined configuration parameters of the OFDM subcarrier spacing and/or the currently operating frequency and/or the currently supported moving speed and the like. And mapping the reference signal on the corresponding time-frequency resource according to the foregoing interval on the time-frequency resource scheduled for the current UE.
  • the UE determines the interval of the reference signal in the frequency domain and the time domain based on the configuration parameters of the OFDM subcarrier spacing and/or the currently operating frequency and/or the currently supported moving speed, and the time-frequency resource range specified by the base station.
  • the reference signal is received on the corresponding time-frequency resource according to the above interval.
  • the reference signal resource mapping method provided by the present invention can flexibly adapt the density of the reference signal to different OFDM symbol lengths caused by different operating frequencies of the system, thereby causing the density of the reference signal and the channel corresponding to the working frequency.
  • FIG. 3 it is a schematic diagram of an embodiment of a resource mapping method according to an embodiment of the present invention.
  • the sending end is a UE
  • the receiving end is a base station.
  • the description is the process of uplink and downlink transmission and reception in the LTE communication process, including:
  • the base station determines a time-frequency resource that is scheduled by the user equipment.
  • the base station sends the uplink scheduling signaling to the user equipment, where the uplink scheduling signaling includes the scheduled time-frequency resource.
  • This step can include steps a and b as follows:
  • the base station sends uplink scheduling signaling to the user equipment, where the uplink scheduling signaling includes scheduled time-frequency resources;
  • the user equipment receives the uplink scheduling signaling sent by the base station, and the uplink scheduling signaling includes the scheduling time.
  • Frequency resource
  • the base station determines the time-frequency resource that the user equipment is scheduled; the base station sends the uplink scheduling signaling to the user equipment, the uplink scheduling signaling includes the scheduled time-frequency resource, and the user equipment receives the uplink scheduling signaling sent by the base station.
  • the uplink scheduling signaling includes scheduled time-frequency resources.
  • the user equipment acquires at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported mobile speed, and scheduled bandwidth information.
  • the user equipment receives the uplink scheduling signaling sent by the base station, and the user equipment acquires the scheduled time-frequency resource and the sub-carrier spacing configuration parameter information, the current working frequency information, the currently supported mobile speed, and the scheduled bandwidth information.
  • At least one of the subcarrier spacing configuration parameter information herein may include: an OFDM symbol number of the scheduled time-frequency resource, and/or a subframe number, and/or a subcarrier number, and/or a subband number And other information.
  • the user equipment determines, according to at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information, a time-frequency resource location of the mapping reference signal.
  • the user equipment determines the time-frequency resource location of the mapping reference signal according to at least one of the sub-carrier spacing configuration parameter information, the current working frequency information, the currently supported moving speed, and the scheduled bandwidth information; After determining the location of the time-frequency resource of the reference signal, the device maps the reference signal at the time-frequency resource location and maps the data on other resources within the scheduled time-frequency resource range.
  • it may include:
  • the user equipment determines the interval of the reference signal according to at least one of the subcarrier spacing configuration parameter information, the current working frequency information, the currently supported moving speed, and the scheduled bandwidth information; the user equipment determines according to the interval of the reference signal. Maps the time-frequency resource location of the reference signal.
  • the time-frequency resource position of the mapping reference signal is represented by (k, l), k is a subcarrier number of the reference signal, and l is an orthogonal frequency division multiplexing OFDM symbol number of the reference signal;
  • the user equipment determines the subcarrier number k of the mapping reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information, where the OFDM symbol number l is First preset value;
  • the user equipment determines the OFDM symbol number 1 of the mapping reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information, where the subcarrier number k is Second preset value;
  • the user equipment determines the subcarrier number k and the OFDM symbol number 1 of the mapping reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information.
  • the interval of the reference signal may be an interval of a time dimension or an interval of a frequency dimension.
  • the interval between the time dimension and the interval of the frequency dimension are respectively described below:
  • A Interval of time dimension: It can be in units of subframes, or in units of slots, or even in units of OFDM symbols.
  • the time slot and the subframe are composed of several OFDM symbols. For example, in LTE, one subframe includes 14 OFDM symbols, and one slot includes 7 OFDM symbols, that is, one subframe includes 2 slots.
  • the subcarrier spacing is 15*2 n KHz. If the OFDM symbol is used as an example, the value of the interval may be 3*2 n OFDM symbols. If the subframe is used as an example, the interval may be 2 N-2 subframes. It should be noted that when the number of inter-subframes is a small number, it means that one sub-frame contains a plurality of resources for receiving and transmitting reference signals.
  • the value of the reference signal interval may also be determined based on a sub-carrier interval, an operating frequency, a supported moving speed, and/or a scheduled bandwidth information.
  • an OFDM symbol is taken as an example, and an example of a table is given, as shown in Table 1.
  • the different moving speeds are determined according to the actual working scenario. For example, 3 km/h corresponds to downlink access, and 1 km/h corresponds to a backhaul link scenario.
  • Interval of frequency dimension It can be in subcarriers or in subbands.
  • the subband is composed of several consecutive subcarriers.
  • time-frequency resource location of the reference signal in the embodiment of the present invention may be described according to the interval of the time dimension or the interval of the frequency dimension obtained in the foregoing embodiment:
  • the interval of the reference signal includes an interval of time dimensions
  • the unit of the interval of the 1 time dimension is an OFDM symbol, and the subcarrier spacing configuration parameter information includes an OFDM symbol number of the scheduled time-frequency resource;
  • n is the OFDM symbol number of the scheduled time-frequency resource
  • N represents the interval of the determined time dimension
  • a is a preset value
  • the value range is 0 ⁇ a ⁇ N
  • the subcarrier spacing configuration parameter information includes a subframe number of the scheduled time-frequency resource
  • Equation (1) is still used, except that n is the subframe number of the scheduled time-frequency resource. After all the values satisfying the formula (1) are determined, it is further determined that l is:
  • L represents the number of OFDM symbols included in each subframe
  • A represents the number of reference signals contained in each subframe containing the reference signal in the time dimension; it should be understood that l is a set, where l 1 , l 2 ... l A is a series of preset values.
  • the interval of the reference signal includes the interval of the frequency dimension
  • the unit of the interval of the frequency dimension is a subcarrier, and the subcarrier spacing configuration parameter information includes a subcarrier number of the scheduled time-frequency resource;
  • the modulo method as in equation (1) can be used to determine:
  • m is the subcarrier number of the scheduled time-frequency resource
  • M represents the interval of the determined frequency dimension
  • b is a preset value
  • the value ranges from 0 ⁇ b ⁇ M
  • the value of formula (3) is satisfied in all m
  • the subcarrier spacing configuration parameter information includes a subband number of the scheduled time-frequency resource
  • Equation (3) can still be used, except that m is the subband number of the scheduled time-frequency resource. After all m satisfy the value of formula (3), it is further determined that k is:
  • K represents the number of subcarriers included in each subband
  • B represents the number of reference signals contained in the reference signal subbands in the frequency dimension; it should be understood that k is a set, where k 1 , k 2 ... k B are a series of preset values.
  • the user equipment determines the time-frequency resource location of the mapping reference signal according to the preset rule according to at least one of the sub-carrier spacing configuration parameter information, the current working frequency information, the currently supported moving speed, and the scheduled bandwidth information.
  • the LTE system has a subcarrier spacing of 15 kHz, each subframe includes 14 OFDM symbols, and one subframe has a duration of 1 ms. Then, in one subframe, the reference signal is placed on four equally spaced OFDM symbols. Then, in a communication system such as 5G or 6G, if the subcarrier spacing is 120 kHz, then 120 kHz is 8 times that of 15 kHz, if a fixed mapping is used. The method, then, the interval of the reference signal is in the frequency domain, which is 8 times that of the original LTE system, causing the reference signal to be too sparse in the frequency domain; and the interval of the reference signal is only 1/8 of the LTE system in time. Causes the reference signal to be too dense in time. On the frequency, the reference signal is inserted every three subcarriers; in time, the reference signal is inserted every 2 OFDM symbols, refer to Table 1 above.
  • the base station acquires at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported mobile speed, and scheduled bandwidth information.
  • the base station acquires at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information.
  • the subcarrier spacing configuration parameter information herein may include: an OFDM symbol number of the scheduled time-frequency resource, and/or a subframe number, and/or a subcarrier number, and/or a subband number.
  • the base station determines, according to at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information, a time-frequency resource location of the received reference signal.
  • the base station determines, according to at least one of the subcarrier spacing configuration parameter information, the current working frequency information, the currently supported moving speed, and the scheduled bandwidth information, the time-frequency resource location of the received reference signal, and Reference signals are received at these locations. Specifically, it may include:
  • the base station determines the interval of the reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information; the base station determines the receiving reference according to the interval of the reference signal.
  • the time-frequency resource location of the signal is
  • the time-frequency resource position of the received reference signal is represented by (k, l), k is the subcarrier number of the reference signal, and l is the orthogonal frequency division multiplexing OFDM symbol number of the reference signal;
  • the base station determines the subcarrier number k of the mapping reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information, where the OFDM symbol number l is a preset value (ie, l is a fixed value);
  • the base station determines, according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information, the OFDM symbol number 1 of the mapping reference signal, where the subcarrier number k is Two preset values (ie, k is a fixed value);
  • the base station determines the subcarrier number k and the OFDM symbol number 1 of the mapping reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently operating frequency information, the currently supported moving speed, and the scheduled bandwidth information.
  • the base station determines the time-frequency resource location of the mapping reference signal according to the preset rule according to at least one of the sub-carrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information.
  • step 304 the detailed process of determining the location of the time-frequency resource of the received reference signal may refer to step 304, which is similar to determining the location of the time-frequency resource of the mapping reference signal, and details are not described herein again.
  • the user equipment determines the time-frequency resource location of the mapping reference signal and the timing at which the base station determines the time-frequency resource location of the received reference signal is not specifically limited.
  • the user equipment sends a reference signal to the base station.
  • the step may include step c and step d as follows:
  • the user equipment maps the reference signal at the time-frequency resource location
  • the user equipment maps the reference signal on the time-frequency resource location, and maps the data on other resources in the scheduled time-frequency resource range. Further, after the mapping of the user equipment is completed, the reference signal and the data are transmitted to the base station. .
  • the base station receives the reference signal transmitted by the user equipment at the time-frequency resource location.
  • the base station receives the reference signal transmitted by the user equipment at the time-frequency resource location of the received reference signal, and receives the data transmitted on the other resources in the scheduled time-frequency resource range.
  • the base station performs channel estimation according to the received reference signal.
  • the base station performs channel estimation according to the received reference signal, and performs reception and demodulation on data on other resources in the scheduled time-frequency resource based on the estimated channel state information.
  • the reference signal resource mapping method provided by the present invention can adapt the density of the reference signal to different OFDM symbol lengths caused by different operating frequencies of the system, thereby causing the density of the reference signal.
  • the improvement from the prior art is: in the prior art, when the system is designed, full-band access is not considered, assuming a unique fixed operating frequency, based on the operating frequency, and the hardware level and channel scene, selecting A subcarrier spacing. In this manner, the density of the reference signal in the frequency domain and the time domain is fixed.
  • the process of uplink scheduling is shown, and the density of the reference signal in the frequency domain and the time domain may be changed.
  • the density of the reference signal in the frequency domain and the time domain can be determined according to the information of the configuration parameters of the subcarrier spacing, so that the density of the reference signal can be considered after the system operates at different frequencies and adopt different subcarrier spacings. Matching the coherence bandwidth and coherence time of the corresponding channel to meet the transceiver requirements of the communication system.
  • FIG. 4 is a schematic diagram of another embodiment of a resource mapping method according to an embodiment of the present invention.
  • the process is as follows: the sending end is the UE, and the receiving end is the base station as an example, which is the process of uplink sending and receiving in the LTE communication process, including:
  • the base station determines a time-frequency resource that the user equipment is scheduled.
  • the base station sends the uplink scheduling signaling to the user equipment, where the uplink scheduling signaling includes the scheduled time-frequency resource.
  • the base station acquires at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information.
  • the base station determines, according to at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information, a time-frequency resource location of the received reference signal.
  • steps 401 and 402 are the same as steps 301 and 302, and steps 403-404 are the same as steps 305-306, and details are not described herein again.
  • the base station sends configuration information of the reference signal location to the user equipment.
  • the step may include step e and step f as follows:
  • the base station sends configuration information of the reference signal location to the user equipment.
  • the base station first determines the configuration information of the reference signal position, and then sends the configuration information of the reference signal position to the user equipment.
  • the related information of the configuration information of the reference signal position may be an interval of the reference signal in time and/or frequency, and further, when the time interval is in units of subframes or time slots, and the frequency interval is in units of sub-bands, the above correlation
  • the information may further include an offset in units of time OFDM symbols and an offset in units of subcarriers in the frequency domain.
  • the user equipment receives configuration information of a reference signal position
  • the user equipment receives the configuration information of the reference signal position;
  • the related information of the configuration information of the reference signal position may be an interval of the reference signal in time and/or frequency, and further when the time interval is in a subframe or The time slot is a unit, and when the frequency interval is in units of subbands, the related information may further include an offset in units of OFDM symbols in time, and an offset in units of subcarriers in the frequency domain.
  • the user equipment determines, according to the configuration information of the reference signal location, a time-frequency resource location of the mapping reference signal.
  • the user equipment determines the mapping reference according to the configuration information of the reference signal position.
  • the time-frequency resource location of the signal the user equipment maps the reference signal at the time-frequency resource location.
  • reference may be made to formula (1)-formula (4) in step 304 in the embodiment shown in FIG. 3, and details are not described herein again.
  • the user equipment sends a reference signal to the base station.
  • the step includes step g and step h as follows:
  • the user equipment transmits a reference signal to the base station
  • the reference signal is transmitted to the base station at the time-frequency resource location, and the data is transmitted on other resources within the scheduled time-frequency resource range.
  • the base station receives the reference signal transmitted by the user equipment according to the determined time-frequency resource location of the received reference signal
  • the base station receives the reference signal sent by the user equipment at the time-frequency resource location of the received reference signal, and receives the data transmitted on other resources in the scheduled time-frequency resource range.
  • the base station performs channel estimation according to the received reference signal.
  • step 408 is the same as step 308 in the embodiment shown in FIG. 3, and details are not described herein again.
  • the base station needs to send configuration information of the reference signal to the user equipment, and the user equipment determines the time-frequency of the mapping reference signal according to the configuration information of the reference signal.
  • the resource location the base station determines that the location of the time-frequency resource receiving the reference signal has not changed.
  • FIG. 5 is a schematic diagram of another embodiment of a resource mapping method according to an embodiment of the present invention.
  • the process is as follows: the sending end is a base station, and the receiving end is a UE, for example, the process of downlink receiving and receiving in the LTE communication process. ,include:
  • the base station determines a time-frequency resource that is scheduled by the user equipment.
  • the base station sends the downlink scheduling signaling to the user equipment, where the downlink scheduling signaling includes the scheduled time-frequency resource.
  • This step can include steps a and b as follows:
  • the base station sends downlink scheduling signaling to the user equipment, where the downlink scheduling signaling includes the scheduled time and frequency resources. source;
  • the user equipment receives downlink scheduling signaling sent by the base station, where the downlink scheduling signaling includes scheduled time-frequency resources;
  • the base station first determines the time-frequency resource used by the downlink service of the user equipment UE, and the base station completes scheduling according to the channel state, the service request situation, and the current resource usage situation of the UE that it serves, for each UE. Determine the corresponding transmit algorithm and the time-frequency resources it uses.
  • the base station sends downlink scheduling signaling to the user equipment, where the downlink scheduling signaling includes scheduled time-frequency resources.
  • the UE receives the downlink scheduling signaling sent by the base station, where the downlink scheduling signaling includes the scheduled time-frequency resource.
  • the base station acquires at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported mobile speed, and scheduled bandwidth information.
  • the base station acquires at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported mobile speed, and scheduled bandwidth information according to the scheduled time-frequency resource of the user equipment;
  • the subcarrier spacing configuration parameter information may include: an OFDM symbol number of the scheduled time-frequency resource, and/or a subframe number, and/or a subcarrier number, and/or a subband number.
  • the base station determines, according to at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information, a time-frequency resource location of the mapping reference signal.
  • the base station determines the time-frequency resource location of the mapping reference signal according to at least one of the sub-carrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information. After determining the time-frequency resource location of the mapping reference signal, the base station maps the reference signal at the time-frequency resource location and maps the data on other resources within the scheduled time-frequency resource range.
  • it may include:
  • the base station determines the interval of the reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information; the base station determines the mapping reference according to the interval of the reference signal.
  • the time-frequency resource location of the signal is
  • the time-frequency resource position of the mapping reference signal is represented by (k, l), k is a subcarrier number of the reference signal, and l is an orthogonal frequency division multiplexing OFDM symbol number of the reference signal;
  • the base station configures parameter information according to the subcarrier spacing, current working frequency information, and currently supported Determining, by at least one of a moving speed and a scheduled bandwidth information, a subcarrier number k of the mapping reference signal, where the OFDM symbol number 1 is a first preset value (ie, l is a fixed value);
  • the base station determines, according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information, the OFDM symbol number 1 of the mapping reference signal, where the subcarrier number k is Two preset values (ie, k is a fixed value);
  • the base station determines the subcarrier number k and the OFDM symbol number 1 of the mapping reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently operating frequency information, the currently supported moving speed, and the scheduled bandwidth information.
  • the interval of the reference signal may be an interval of a time dimension or an interval of a frequency dimension.
  • the interval between the time dimension and the interval of the frequency dimension are respectively described below:
  • A Interval of time dimension: It can be in units of subframes, or in units of slots, or even in units of OFDM symbols.
  • the time slot and the subframe are composed of several OFDM symbols. For example, in LTE, one subframe includes 14 OFDM symbols, and one slot includes 7 OFDM symbols, that is, one subframe includes 2 slots.
  • the subcarrier spacing is 15*2 n KHz. If the OFDM symbol is used as an example, the value of the interval may be 3*2 n OFDM symbols. If the subframe is used as an example, the interval may be 2 N-2 subframes. It should be noted that when the number of inter-subframes is a small number, it means that one sub-frame contains a plurality of resources for receiving and transmitting reference signals.
  • the value of the reference signal interval may also be determined based on a sub-carrier interval, an operating frequency, a supported moving speed, and/or a scheduled bandwidth information.
  • an OFDM symbol is taken as an example, and an example of a table is given, as shown in Table 1 above.
  • the different moving speeds are determined according to the actual working scenario. For example, 3 km/h corresponds to downlink access, and 1 km/h corresponds to a backhaul link scenario.
  • Interval of frequency dimension It can be in subcarriers or in subbands.
  • the subband is composed of several subcarriers.
  • time-frequency resource location of the reference signal in the embodiment of the present invention may be described according to the interval of the time dimension or the interval of the frequency dimension obtained in the foregoing embodiment:
  • the interval of the reference signal includes an interval of time dimensions
  • the unit of the interval of the 1 time dimension is an OFDM symbol, and the subcarrier spacing configuration parameter information includes an OFDM symbol number of the scheduled time-frequency resource;
  • n is the OFDM symbol number of the scheduled time-frequency resource
  • N represents the interval of the determined time dimension
  • a is a preset value
  • the value range is 0 ⁇ a ⁇ N
  • the subcarrier spacing configuration parameter information includes a subframe number of the scheduled time-frequency resource
  • Equation (1) is still used, except that n is the subframe number of the scheduled time-frequency resource. After all the values satisfying the formula (1) are determined, it is further determined that l is:
  • L represents the number of OFDM symbols included in each subframe
  • A represents the number of reference signals contained in each subframe containing the reference signal in the time dimension; it should be understood that l is a set, where l 1 , l 2 ... l A is a series of preset values.
  • the interval of the reference signal includes the interval of the frequency dimension
  • the unit of the interval of the frequency dimension is a subcarrier, and the subcarrier spacing configuration parameter information includes a subcarrier number of the scheduled time-frequency resource;
  • the modulo method as in equation (1) can be used to determine:
  • m is the subcarrier number of the scheduled time-frequency resource
  • M represents the interval of the determined frequency dimension
  • b is a preset value
  • the value ranges from 0 ⁇ b ⁇ M
  • the value of formula (3) is satisfied in all m
  • the subcarrier spacing configuration parameter information includes a subband number of the scheduled time-frequency resource
  • Equation (3) can still be used, except that m is the subband number of the scheduled time-frequency resource. After the value of m satisfying formula (3) is determined, it is further determined that k is:
  • K represents the number of subcarriers included in each subband
  • B represents the number of reference signals contained in the reference signal subbands in the frequency dimension; it should be understood that k is a set, where k 1 , k 2 ... k B are a series of preset values.
  • the base station determines the time-frequency resource location of the mapping reference signal according to the preset rule according to at least one of the sub-carrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information.
  • the LTE system has a subcarrier spacing of 15 kHz, each subframe includes 14 OFDM symbols, and one subframe has a duration of 1 ms. Then, in one subframe, the reference signal is placed on four equally spaced OFDM symbols. Then, in a communication system such as 5G or 6G, if the subcarrier spacing is 120 kHz, then 120 kHz is 8 times that of 15 kHz, if a fixed mapping is used. The method, then, the interval of the reference signal is in the frequency domain, which is 8 times that of the original LTE system, causing the reference signal to be too sparse in the frequency domain; and the interval of the reference signal is only 1/8 of the LTE system in time. Causes the reference signal to be too dense in time. On the frequency, the reference signal is inserted every three subcarriers; in time, the reference signal is inserted every 2 OFDM symbols, refer to Table 1 above.
  • the user equipment acquires at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information.
  • the user equipment receives the downlink scheduling signaling sent by the base station, and after the downlink scheduling signaling includes the scheduled time-frequency resource, the user equipment acquires the sub-carrier spacing configuration parameter information, the current working frequency information, and the currently supported mobile At least one of speed and scheduled bandwidth information.
  • the subcarrier spacing configuration parameter information herein may include: an OFDM symbol number of the scheduled time-frequency resource, and/or a subframe number, and/or a subcarrier number, and/or a subband number.
  • the user equipment configures parameter information according to the subcarrier spacing, frequency information of the current working, and when Determining a time-frequency resource location of the received reference signal by at least one of a previously supported moving speed and scheduled bandwidth information;
  • the UE determines the time-frequency resource location of the received reference signal according to at least one of the sub-carrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information.
  • the UE determines that the time-frequency resource location of the received reference signal is the same as the method for the base station to determine the time-frequency resource location of the transmitted reference signal, specifically:
  • the user equipment determines the interval of the reference signal according to at least one of the subcarrier spacing configuration parameter information, the current working frequency information, the currently supported moving speed, and the scheduled bandwidth information; the user equipment determines according to the interval of the reference signal.
  • the time-frequency resource location of the reference signal is received.
  • the time-frequency resource position of the received reference signal is represented by (k, l), k is the subcarrier number of the reference signal, and l is the orthogonal frequency division multiplexing OFDM symbol number of the reference signal;
  • the user equipment determines the subcarrier number k of the received reference signal according to at least one of the subcarrier spacing configuration parameter information, the current working frequency information, the currently supported moving speed, and the scheduled bandwidth information, where the OFDM symbol number l is First preset value;
  • the user equipment determines the OFDM symbol number l of the received reference signal according to at least one of the subcarrier spacing configuration parameter information, the current working frequency information, the currently supported moving speed, and the scheduled bandwidth information, where the subcarrier number k is Second preset value;
  • the user equipment determines the subcarrier number k and the OFDM symbol number 1 of the received reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information.
  • the user equipment determines the time-frequency resource location of the received reference signal according to the preset rule according to at least one of the sub-carrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information.
  • step 504 the detailed process of determining the time-frequency resource location of the received reference signal may be referred to step 504, which is similar to determining the time-frequency resource location of the mapping reference signal, and details are not described herein again.
  • the user equipment determines a time-frequency resource location of the mapping reference signal and a time-frequency resource bit of the base station determining the received reference signal
  • the timing of the setting is not specifically limited.
  • the base station sends a reference signal to the user equipment.
  • the step may include step c and step d as follows:
  • the base station transmits a reference signal to the user equipment according to the time-frequency resource location;
  • the base station transmits a reference signal to the UE in the time-frequency resource range scheduled by each UE according to the determined time-frequency resource location, and transmits data on other resources in the scheduling range. That is, the base station may map and then transmit the reference signal according to the determined time-frequency resource location (k, l), or may determine the density of the transmitted reference signal according to a preset rule, and then transmit the reference signal after mapping.
  • the user equipment receives the reference signal transmitted by the base station at the time-frequency resource location;
  • the user equipment after determining, by the user equipment, the time-frequency resource location of the reference signal, the user equipment receives the reference signal transmitted by the base station at the time-frequency resource location, and receives the data transmitted on other resources in the scheduled time-frequency resource range.
  • the user equipment performs channel estimation according to the received reference signal.
  • the UE performs channel estimation according to the received reference signal, and performs reception and demodulation on data on other resources in the scheduled time-frequency resource based on the estimated channel state information.
  • the reference signal resource mapping method provided by the present invention can adapt the density of the reference signal to different OFDM symbol lengths due to different operating frequencies of the system, thereby causing reference signals.
  • the density does not match the associated bandwidth and coherence time of the channel corresponding to the operating frequency.
  • An improvement of the embodiment of the present invention is different from the prior art. In the prior art, when the system is designed, full-band access is not considered, assuming a unique fixed operating frequency, based on the operating frequency, and the hardware level and Channel scenario, a subcarrier spacing selected; in this way, the density of the reference signal in the frequency domain and the time domain is fixed.
  • the process of downlink scheduling is shown, and the density of the reference signal in the frequency domain and the time domain may be changed, and the reference signal may be determined in the frequency domain according to configuration parameter information of the subcarrier spacing or other information. And the density in the time domain, so that the density of the reference signal can be matched with the coherent bandwidth and coherence time of the corresponding channel after considering that the system operates at different frequencies and adopt different subcarrier spacings, so as to meet the transmission and reception requirements of the communication system.
  • FIG. 6 is a schematic diagram of another embodiment of a resource mapping method according to an embodiment of the present invention, where the sending end is a base station, and the receiving end is a UE as an example, that is, in the LTE communication process,
  • the process of scheduling including:
  • the base station determines a time-frequency resource that is scheduled by the user equipment.
  • the base station sends the downlink scheduling signaling to the user equipment, where the downlink scheduling signaling includes the scheduled time-frequency resource.
  • the base station acquires at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information.
  • the base station determines, according to at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information, a time-frequency resource location of the mapping reference signal.
  • steps 601-604 are the same as steps 501-504 shown in FIG. 5, and details are not described herein again.
  • the base station sends configuration information of the reference signal location to the user equipment.
  • the step may include step e and step f as follows:
  • the base station sends configuration information of the reference signal location to the user equipment.
  • the base station first determines the configuration information of the reference signal position, and then sends the configuration information of the reference signal position to the user equipment.
  • the related information of the configuration information of the reference signal position may be an interval of the reference signal in time and/or frequency, and further, when the time interval is in units of subframes or time slots, and the frequency interval is in units of sub-bands, the above correlation
  • the information may further include an offset in units of time OFDM symbols and an offset in units of subcarriers in the frequency domain.
  • the user equipment receives configuration information of a reference signal position
  • the user equipment receives the configuration information of the reference signal position;
  • the related information of the configuration information of the reference signal position may be an interval of the reference signal in time and/or frequency, and further when the time interval is in a subframe or The time slot is a unit, and when the frequency interval is in units of subbands, the related information may further include an offset in units of OFDM symbols in time, and an offset in units of subcarriers in the frequency domain.
  • the user equipment determines, according to the configuration information of the reference signal location, a time-frequency resource location of the received reference signal.
  • the user equipment determines the time-frequency resource location of the received reference signal according to the configuration information of the reference signal position.
  • the specific determination method refer to the steps in the embodiment shown in FIG. Equation (1) - Formula (4) in 504, and will not be described here.
  • the base station sends a reference signal to the user equipment.
  • the step includes step g and step h as follows:
  • the base station transmits a reference signal to the user equipment according to the time-frequency resource location;
  • the base station transmits a reference signal to the UE in the time-frequency resource range scheduled by each UE according to the determined time-frequency resource location, and transmits data on other resources in the scheduling range. That is, the base station may map and transmit the reference signal according to the determined time-frequency resource location (k, l), or may determine the density of the transmitted reference signal according to a preset rule, and then transmit the reference signal after mapping.
  • the user equipment receives the reference signal transmitted by the base station at the time-frequency resource location;
  • the user equipment receives the reference signal transmitted by the base station at the time-frequency resource location of the received reference signal, and receives the data transmitted on other resources within the scheduled time-frequency resource range.
  • the user equipment performs channel estimation according to the received reference signal.
  • step 608 is the same as step 508 in the embodiment shown in FIG. 5, and details are not described herein again.
  • the base station needs to send configuration information of the reference signal to the user equipment, and the user equipment determines the time frequency of receiving the reference signal according to the configuration information of the reference signal.
  • the base station determines that the location of the time-frequency resource transmitting the reference signal has not changed.
  • FIG. 7 it is a schematic diagram of an embodiment of the sending end in the embodiment of the present invention, which may include :
  • the obtaining module 701 is configured to acquire at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information.
  • a determining module 702 configured to determine a time-frequency resource location of the mapping reference signal according to at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information;
  • the transmitting module 703 is configured to map the reference signal at the time-frequency resource location.
  • the determining module 702 is specifically configured to determine an interval of the reference signal according to at least one of the subcarrier spacing configuration parameter information, the current working frequency information, the currently supported moving speed, and the scheduled bandwidth information, and determine according to the interval of the reference signal. Maps the time-frequency resource location of the reference signal.
  • the determining module 702 is specifically configured to determine, according to a preset rule, a time-frequency resource of the mapping reference signal according to at least one of a sub-carrier spacing configuration parameter information, a current working frequency information, a currently supported moving speed, and scheduled bandwidth information. position.
  • the time-frequency resource location of the mapping reference signal is represented by (k, l), k is a subcarrier number of the reference signal, and l is an orthogonal frequency division multiplexing OFDM of the reference signal. Symbol number
  • the determining module 702 is specifically configured to determine a subcarrier number k of the mapping reference signal according to at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information, where OFDM The symbol number l is the first preset value;
  • the determining module 702 is specifically configured to determine, according to at least one of the subcarrier spacing configuration parameter information, the current working frequency information, the currently supported moving speed, and the scheduled bandwidth information, the OFDM symbol number 1 of the mapping reference signal, where,
  • the carrier number k is a second preset value
  • the determining module 702 is specifically configured to determine the subcarrier number k and the OFDM symbol number of the mapping reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information. l.
  • the transmitting module 703 is configured to: if the sending end includes the base station, the transmitting module sends the configuration information of the reference signal position to the receiving end;
  • the obtaining module 701 is configured to: if the sending end includes the user equipment, the acquiring module receives the configuration information of the reference signal position, and determines the time-frequency resource location of the mapping reference signal according to the configuration information of the reference signal position.
  • FIG. 8 is a schematic diagram of an embodiment of a receiving end according to an embodiment of the present invention, which may include:
  • the obtaining module 801 is configured to acquire at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information.
  • a determining module 802 configured to determine, according to at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information, a time-frequency resource location of the received reference signal;
  • the receiving module 803 is configured to receive, at a time-frequency resource location, a reference signal transmitted by the transmitting end.
  • the determining module 802 is specifically configured to determine an interval of the reference signal according to at least one of subcarrier spacing configuration parameter information, current working frequency information, currently supported moving speed, and scheduled bandwidth information; and determine according to the interval of the reference signal The time-frequency resource location of the reference signal is received.
  • the determining module 802 is specifically configured to determine, according to a preset rule, a time-frequency resource for receiving the reference signal according to at least one of a sub-carrier spacing configuration parameter information, a current working frequency information, a currently supported moving speed, and scheduled bandwidth information. position.
  • the time-frequency resource location of the received reference signal is represented by (k, l), k is a subcarrier number of the reference signal, and l is an OFDM symbol number of the reference signal;
  • the determining module 802 is specifically configured to determine, according to at least one of the subcarrier spacing configuration parameter information, the current working frequency information, the currently supported moving speed, and the scheduled bandwidth information, the subcarrier number k of the received reference signal, where OFDM The symbol number l is the first preset value;
  • the determining module 802 is specifically configured to determine, according to at least one of the subcarrier spacing configuration parameter information, the current working frequency information, the currently supported moving speed, and the scheduled bandwidth information, the OFDM symbol number 1 of the received reference signal, where,
  • the carrier number k is a second preset value
  • the determining module 802 is specifically configured to determine the subcarrier number k and the OFDM symbol number of the received reference signal according to at least one of the subcarrier spacing configuration parameter information, the currently working frequency information, the currently supported moving speed, and the scheduled bandwidth information. l.
  • the receiving end further includes:
  • the transmitting module 803 is configured to: if the receiving end includes the base station, the transmitting module sends the reference signal to the sending end.
  • the configuration information of the location location, the configuration information of the reference signal location is used by the transmitting end to determine the time-frequency resource location of the mapping reference signal;
  • the obtaining module 801 is configured to: if the receiving end includes the user equipment, the acquiring module receives the configuration information of the reference signal position sent by the sending end, and determines the time-frequency resource location of the received reference signal according to the configuration information of the reference signal position.
  • FIG. 9 is a schematic diagram of an embodiment of a base station according to an embodiment of the present invention, including:
  • the base station may vary considerably depending on configuration or performance, and may include a transceiver 901, one or more central processing units (CPU) 902 (eg, one or more processors), and a memory 903.
  • CPU central processing units
  • One or more storage media 904 that store application 9041 or data 9042 eg, one or one storage device in Shanghai.
  • the memory 903 and the storage medium 904 may be short-term storage or persistent storage.
  • the program stored on storage medium 904 may include one or more modules (not shown in Figure 9), each of which may include a series of instruction operations in the cloud controller.
  • central processor 902 can be arranged to communicate with storage medium 904, which performs a series of instruction operations in storage medium 904.
  • the transceiver 901 is configured to perform step 302 in FIG. 3, steps 402 and 405 in FIG. 4, steps 502 and 507 in FIG. 5, and steps 602, 605 and 607 in FIG.
  • the central processing unit 902 is configured to perform steps 301, 305, 306 and 308 in FIG. 3, steps 401, 403, 404 and 408 in FIG. 4, steps 501, 503 and 504 in FIG. 5, steps in FIG. 601, 603, and 604.
  • FIG. 10 is a schematic diagram of an embodiment of a user equipment according to an embodiment of the present invention, including:
  • the user equipment may be any terminal device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), a vehicle-mounted computer, and the like:
  • FIG. 10 is a block diagram showing a partial structure of a mobile phone related to a terminal provided by an embodiment of the present invention.
  • the mobile phone includes: a radio frequency (RF) circuit 1010, a memory 1020, an input unit 1030, a display unit 1040, a sensor 1050, an audio circuit 1060, a wireless fidelity (WiFi) module 1070, and a processor 1080. And power supply 1090 and other components.
  • RF radio frequency
  • the RF circuit 1010 can be used for receiving and transmitting signals during the transmission or reception of information or during a call. In particular, after receiving the downlink information of the base station, it is processed by the processor 1080. In addition, the uplink data is designed to be sent to the base station. Generally, RF circuit 1010 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, RF circuit 1010 can also communicate with the network and other devices via wireless communication. The above wireless communication may use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division). Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), E-mail, Short Messaging Service (SMS), and the like.
  • GSM Global System of Mobile communication
  • GPRS General Packet Radio Service
  • the memory 1020 can be used to store software programs and modules, and the processor 1080 executes various functional applications and data processing of the mobile phone by running software programs and modules stored in the memory 1020.
  • the memory 1020 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored according to Data created by the use of the mobile phone (such as audio data, phone book, etc.).
  • memory 1020 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
  • the input unit 1030 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the handset.
  • the input unit 1030 may include a touch panel 1031 and other input devices 1032.
  • the touch panel 1031 also referred to as a touch screen, can collect touch operations on or near the user (such as the user using a finger, a stylus, or the like on the touch panel 1031 or near the touch panel 1031. Operation), and drive the corresponding connecting device according to a preset program.
  • the touch panel 1031 may include two parts: a touch detection device and a touch controller.
  • the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits a signal to the touch controller; the touch controller receives the touch from the touch detection device.
  • the information is touched and converted into contact coordinates, sent to processor 1080, and can receive commands from processor 1080 and execute them.
  • the touch panel 1031 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves.
  • the input unit 1030 may also include other input devices 1032.
  • other input devices 1032 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and the like.
  • the display unit 1040 can be used to display information input by the user or information provided to the user as well as various menus of the mobile phone.
  • the display unit 1040 may include a display panel 1041.
  • the display panel 1041 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
  • the touch panel 1031 may cover the display panel 1041, and when the touch panel 1031 detects a touch operation thereon or nearby, the touch panel 1031 transmits to the processor 1080 to determine the type of the touch event, and then the processor 1080 according to the touch event. The type provides a corresponding visual output on display panel 1041.
  • touch panel 1031 and the display panel 1041 are used as two independent components to implement the input and input functions of the mobile phone in FIG. 10, in some embodiments, the touch panel 1031 may be integrated with the display panel 1041. Realize the input and output functions of the phone.
  • the handset can also include at least one type of sensor 1050, such as a light sensor, motion sensor, and other sensors.
  • the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel 1041 according to the brightness of the ambient light, and the proximity sensor may close the display panel 1041 and/or when the mobile phone moves to the ear. Or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity.
  • the mobile phone can be used to identify the gesture of the mobile phone (such as horizontal and vertical screen switching, related Game, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for the mobile phone can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, no longer Narration.
  • the gesture of the mobile phone such as horizontal and vertical screen switching, related Game, magnetometer attitude calibration
  • vibration recognition related functions such as pedometer, tapping
  • the mobile phone can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, no longer Narration.
  • An audio circuit 1060, a speaker 1061, and a microphone 1062 can provide an audio interface between the user and the handset.
  • the audio circuit 1060 can transmit the converted electrical data of the received audio data to the speaker 1061, and convert it into a sound signal output by the speaker 1061; on the other hand, the microphone 1062 converts the collected sound signal into an electrical signal, by the audio circuit 1060. Convert to audio data after receiving, then audio After the data output processor 1080 processes, it is sent via RF circuit 1010 to, for example, another handset, or the audio data is output to memory 1020 for further processing.
  • WiFi is a short-range wireless transmission technology.
  • the mobile phone through the WiFi module 1070 can help users to send and receive e-mail, browse the web and access streaming media, etc. It provides users with wireless broadband Internet access.
  • FIG. 10 shows the WiFi module 1070, it can be understood that it does not belong to the essential configuration of the mobile phone, and may be omitted as needed within the scope of not changing the essence of the invention.
  • the processor 1080 is the control center of the handset, which connects various portions of the entire handset using various interfaces and lines, by executing or executing software programs and/or modules stored in the memory 1020, and invoking data stored in the memory 1020, The phone's various functions and processing data, so that the overall monitoring of the phone.
  • the processor 1080 may include one or more processing units; preferably, the processor 1080 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, and the like.
  • the modem processor primarily handles wireless communications. It will be appreciated that the above described modem processor may also not be integrated into the processor 1080.
  • the mobile phone also includes a power source 1090 (such as a battery) that supplies power to various components.
  • a power source 1090 such as a battery
  • the power source can be logically coupled to the processor 1080 through a power management system to manage functions such as charging, discharging, and power management through the power management system.
  • the mobile phone may further include a camera, a Bluetooth module, and the like, and details are not described herein again.
  • the processor 1080 included in the user equipment further has the following functions:
  • Steps 303 and 304 in FIG. 3 are performed, step 406 in FIG. 4 is performed, steps 505, 506, and 508 in FIG. 5 are performed, and steps 606 and 608 in FIG. 6 are performed.
  • the RF circuit 1010 included in the user equipment also has the following functions:
  • Step 307 in Fig. 3 is performed, step 407 in Fig. 4.
  • the embodiment of the present invention further provides a storage medium.
  • the technical solution of the present invention or the part that contributes to the prior art or all or part of the technical solution may be embodied in the form of a software production port.
  • the computer software product is stored in a storage medium for storing computer software instructions for use in the above apparatus, comprising programs for performing the first aspect, the second aspect, or the apparatus.
  • the storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes.

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Abstract

本发明实施例公开了一种资源映射的方法,用于可根据子载波间隔的配置参数等信息确定参考信号在频率域和时间域上的密度,从而能够使得参考信号的密度在考虑系统工作在不同频率采用不同子载波间隔后,仍然能够与相应信道的相干带宽和相干时间相匹配,满足通信系统的收发要求。包括:发送端获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;所述发送端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定映射参考信号的时频资源位置;所述发送端在所述时频资源位置映射所述参考信号。

Description

一种资源映射方法、发送端以及接收端 技术领域
本发明涉及通信领域,尤其涉及一种资源映射方法、发送端以及接收端。
背景技术
在未来5G系统中,将会实现全频带接入(包含现有的6GHz以下频段,以及6GHz以上频段,直至100GHz的毫米波频段),而6GHz以上频段,尤其是毫米波频段,硬件中的非理想性会引入相位噪声,而相位噪声会引起OFDM(Orthogonal frequency-division multiplexing,正交频分复用)系统子载波间干扰(Inter-carrier interference,ICI),使得系统通信质量大大下降。而要消除ICI,最为实用的方法就是扩大子载波间隔。那么在未来5G系统中,采用不同子载波间隔的配置,这样,当系统工作在高频频段时,将会采用子载波间隔较大的OFDM配置参数;相反,当系统工作在低频频段时,将会采用子载波间隔较小的OFDM配置参数。
在一个通信系统中,为了保证接收机能够正确解调信号,需要在发射数据的同时,穿插的发射一些参考信号,以协助接收机能够正确估计信道信息,并利用这些估计得到的信道信息,均衡掉接收数据上的信道影响,提高接收机的接收效果。而参考信号的插入间隔在频域上要与信道的相干带宽匹配,在时域上要与信道的相干时间匹配。
由于未来5G系统中,将会工作在不同的频率上,会采用不同的子载波间隔配置,若高低频系统中还继续采用固定的映射方法,就会造成参考信号的密度过小或过密。那么根据接收的参考信息进行信道估计,所得到的等效信道参数不够准确的可能性很大。
发明内容
本发明实施例提供了一种资源映射的方法、发送端以及接收端,用于发送端根据子载波间隔的配置参数等信息,确定参考信号在频率域和时间域上的密 度,从而能够使得参考信号的密度在考虑系统工作在不同频率采用不同子载波间隔后,仍然能够与相应信道的相干带宽和相干时间相匹配,映射或接收参考信号,满足通信系统的收发要求。
在未来5G系统中,工作在不同的频率上,那么可采用不同的子载波间隔配置,若高低频系统中采用固定的映射方法,就会造成参考信号的密度过小或过密,本发明实施例用于解决这种问题。本发明主要适用于通信系统,包括发送端和接收端,发送端所涉及的网元可包括基站、无线接入点、用户设备UE,接收端所涉及的网元可包括用户设备、终端、移动台(Mobile station,MS)或者基站等。
本发明实施例的第一方面提供一种资源映射的方法,可以包括:发送端先确定被调度的时频资源,发送端获取调度的时频资源的相关信息可以包括但不限于子载波间隔配置参数信息、当前系统工作的频率信息、当前系统支持的移动速度和调度的带宽信息等信息;该发送端再可以根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种信息,来确定映射参考信号的时域/频域的资源位置;该发送端在该时域/频域的资源位置映射该参考信号;进一步的,该发送端向接收端发射参考信号。
在本发明实施例中,发送端这里确定的映射参考信号的时域/频域的资源位置,在该时域/频域的资源位置映射该参考信号,确定发射参考信号的密度,可根据子载波间隔的配置参数在内的信息确定参考信号在频率域和时间域上的密度。那么,参考信号在频率域、时间域上的密度是可以变的,从而能够使得参考信号的密度在考虑系统工作在不同频率采用不同子载波间隔后,仍然能够与相应信道的相干带宽和相干时间相匹配,满足通信系统的收发要求。
结合本发明实施例的第一方面,在本发明实施例的第一方面的第一种实现方式中,该发送端根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种信息,来确定映射参考信号的时域/频域的资源位置,可以包括:该发送端根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种信息,来确定该参考信号的间隔;该发送端根据该参考信号的 间隔,确定该映射参考信号的时域/频域的资源位置。
在本发明实施例中,发送端可以根据这些子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息等信息,确定该参考信号的间隔,这里参考信号的间隔就是参考信号密度的体现。参考信号的间隔可以包括时间维度上的间隔和频率维度上的间隔。再根据确定的参考信号的间隔确定映射参考信号的时域/频域的资源位置。
结合本发明实施例的第一方面,在本发明实施例的第一方面的第二种实现方式中,该发送端根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种信息,来确定发射参考信号的时域/频域的资源位置,可以包括:该发送端根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种信息,按照预设规则,来确定该映射参考信号的时域/频域的资源位置,应理解,这里的预设规则发送端和接收端都是预先得知的。
在本发明实施例中,发送端根据预设规则确定发射参考信号的时域/频域的资源位置,属于静态配置,发送端根据预设规则来配置映射参考信号的时域/频域的资源位置,接收端也会根据预设规则来配置接收参考信号的时域/频域的资源位置。而这个预设规则是发送端和接收端都预知的规则,为本发明实施例提供了一种可选的实现方式。
结合本发明实施例的第一方面、本发明实施例的第一方面的第一种至第二种实现方式中的任意一种,在本发明实施例的第一方面的第三种实现方式中,该映射参考信号的时域/频域的资源位置用(k,l)表示,k为参考信号的子载波编号,l为参考信号的正交频分复用OFDM符号编号;
该发送端根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种,确定映射参考信号的时域/频域的资源位置,可以包括以下几种情况:
(1)该发送端根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种,确定映射参考信号的子载波编号k,其中,该OFDM符号编号l为第一预设值;
(2)该发送端根据该子载波间隔配置参数信息、该当前工作的频率信息、 该当前支持的移动速度和该调度的带宽信息中的至少一种,确定映射参考信号的OFDM符号编号l,其中,该子载波编号k为第二预设值;
(3)该发送端根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种,确定映射参考信号的子载波编号k和OFDM符号编号l。
在本发明实施例中,若时域/频域的资源位置用(k,l)表示,k为参考信号的子载波编号,l为参考信号的正交频分复用OFDM符号编号;那么,发送端可以根据子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种,确定映射参考信号的子载波编号k和OFDM符号编号l;或者,确定映射参考信号的子载波编号k,该OFDM符号编号l为固定值;或者,确定映射参考信号的OFDM符号编号l,其中,该子载波编号k为固定值。进一步的具体提供了映射参考信号的时域/频域的资源位置的实现方式。
结合本发明实施例的第一方面、本发明实施例的第一方面的第一种至第二种实现方式中的任意一种,在本发明实施例的第一方面的第四种实现方式中,该方法还可以包括:若该发送端包括基站,则该发送端将该参考信号位置的配置信息向该接收端发送;或者,若该发送端包括用户设备,则该发送端接收该参考信号位置的配置信息,并根据该参考信号位置的配置信息确定映射参考信号的时域/频域的资源位置。
本发明实施例第二方面提供了一种资源映射的方法,可以包括:接收端先确定被调度的时频资源,接收端获取调度的时频资源的相关信息包括但不限于子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息等信息;该接收端再可以根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种信息,来确定接收参考信号的时域/频域的资源位置;该接收端在该时域/频域的资源位置上接收发送端发射的参考信号。
在本发明实施例中,接收端这里确定的接收参考信号的时域/频域的资源位置,其实就是在确定接收参考信号的密度,可根据子载波间隔的配置参数在内的信息确定参考信号在频率域和时间域上的密度。那么,参考信号在频率域、 时间域上的密度是可以变的,从而能够使得参考信号的密度在考虑系统工作在不同频率采用不同子载波间隔后,仍然能够与相应信道的相干带宽和相干时间相匹配,满足通信系统的收发要求。
结合本发明实施例的第二方面,在本发明实施例的第二方面的第一种实现方式中,该接收端根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种信息,来确定接收参考信号的时域/频域的资源位置,可以包括:该接收端根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种信息,来确定该参考信号的间隔;该接收端根据该参考信号的间隔,确定该接收参考信号的时域/频域的资源位置。
在本发明实施例中,接收端可以根据这些子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息等信息,确定该参考信号的间隔,这里参考信号的间隔就是参考信号密度的体现。参考信号的间隔可以包括时间维度上的间隔和频率维度上的间隔。再根据确定的参考信号的间隔确定接收参考信号的时域/频域的资源位置。
结合本发明实施例的第二方面,在本发明实施例的第二方面的第二种实现方式中,该接收端根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种信息,来确定接收参考信号的时域/频域的资源位置,包括:该接收端根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种信息,按照预设规则,来确定该接收参考信号的时域/频域的资源位置,应理解,这里的预设规则发送端和接收端都是预先得知的。
在本发明实施例中,接收端根据预设规则确定接收参考信号的时域/频域的资源位置,属于静态配置,接收端根据预设规则来配置接收参考信号的时域/频域的资源位置,发送端也会根据预设规则来配置发射参考信号的时域/频域的资源位置。而这个预设规则是发送端和接收端都预知的规则,为本发明实施例提供了一种可选的实现方式。
结合本发明实施例的第二方面、本发明实施例的第二方面的第一种至第二种实现方式中的任意一种,在本发明实施例的第二方面的第三种实现方式中, 该接收参考信号的时域/频域的资源位置用(k,l)表示,k为参考信号的子载波编号,l为参考信号的OFDM符号编号;该接收端根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种,确定接收参考信号的时域/频域的资源位置,可以包括以下几种情况:
(1)该接收端根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种,确定接收参考信号的子载波编号k,其中,该OFDM符号编号l为第一预设值;
(2)该接收端根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种,确定接收参考信号的OFDM符号编号l,其中,该子载波编号k为第二预设值;
(3)该接收端根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种,确定接收参考信号的子载波编号k和OFDM符号编号l。
在本发明实施例中,若时域/频域的资源位置用(k,l)表示,k为参考信号的子载波编号,l为参考信号的正交频分复用OFDM符号编号;那么,接收端可以根据子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种,确定接收参考信号的子载波编号k和OFDM符号编号l;或者,确定接收参考信号的子载波编号k,该OFDM符号编号l为固定值;或者,确定接收参考信号的OFDM符号编号l,其中,该子载波编号k为固定值。进一步的具体提供了接收参考信号的时域/频域的资源位置的实现方式。
结合本发明实施例的第二方面、本发明实施例的第二方面的第一种至第二种实现方式中的任意一种,在本发明实施例的第二方面的第四种实现方式中,该方法还可以包括:若该接收端包括基站,则该接收端向该发送端发送该参考信号位置的配置信息,该参考信号位置的配置信息用于该发送端确定映射参考信号的时域/频域的资源位置;或者,若该接收端包括用户设备,则该接收端接收该发送端发送的该参考信号位置的配置信息,并根据该参考信号位置的配置信息确定接收参考信号的时域/频域的资源位置。
本发明实施例第三方面提供一种发送端,具有实现对应于上述第一方面提供的实现确定映射参考信号的时频资源位置,映射参考信号的功能。该功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
本发明实施例第四方面提供一种接收端,具有实现对应于上述第二方面提供的实现确定接收参考信号的时频资源位置,接收参考信号的功能。该功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
本发明实施例第五方面提供一种发送端,可以包括:收发器,处理器,存储器和总线,该收发器、该处理器和该存储器通过该总线连接;
该存储器,用于存储操作指令;
该处理器,用于获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种,确定映射参考信号的时频资源位置;
该收发器,用于在所述时频资源位置映射所述参考信号。
本发明实施例第六方面提供一种接收端,可以包括:收发器,处理器,存储器和总线,该收发器、该处理器和该存储器通过该总线连接;
该存储器,用于存储操作指令;
该处理器,用于获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;根据该子载波间隔配置参数信息、该当前工作的频率信息、该当前支持的移动速度和该调度的带宽信息中的至少一种,确定接收参考信号的时频资源位置;
该收发器,用于在该时频资源位置上接收发送端发射的参考信号。
本发明实施例第七方面提供一种存储介质,需要说明的是,本发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全部或部分可以以软件产口的形式体现出来,该计算机软件产品存储在一个存储介质中,用于储存为上述设备所用的计算机软件指令,其包含用于执行上述第一方面、第二方面或第三方面或第四方面为接收端或者发送端所设计的程序。
该存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
本发明实施例提供的技术方案中,本发明实施例具有以下优点:
在本发明实施例中,发送端获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;发送端根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的时频资源位置;发送端在所述时频资源位置映射所述参考信号。那么,发送端根据子载波间隔的配置参数信息,确定参考信号在频率域和时间域上的密度,从而能够使得参考信号的密度在考虑系统工作在不同频率采用不同子载波间隔后,仍然能够与相应信道的相干带宽和相干时间相匹配,映射参考信号,满足通信系统的收发要求。
附图说明
图1为本发明实施例中插入参考信号的一个实施例示意图;
图2为本发明实施例中所应用的一个场景的实施例示意图;
图3为本发明实施例中资源映射方法的一个实施例示意图;
图4为本发明实施例中资源映射方法的另一个实施例示意图;
图5为本发明实施例中资源映射方法的另一个实施例示意图;
图6为本发明实施例中资源映射方法的另一个实施例示意图;
图7为本发明实施例中发送端的一个实施例示意图;
图8为本发明实施例中接收端的一个实施例示意图;
图9为本发明实施例中基站的一个实施例示意图;
图10为本发明实施例中用户设备的一个实施例示意图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域技术人员在没有作出创造性劳 动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含,例如,包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
现有技术中,以现有的长期演进(Long Term Evolution,LTE)系统为例,LTE是工作在低频段(3GHz以内,各运营商的频谱情况可能不同),子载波间隔为15KHz,每个子帧包含14个OFDM符号,一个子帧的时长为1ms。参考信号的插入如图1所示,在一个子帧中会每隔4个等间隔的OFDM符号上放置一个参考信号R5,即在数据部分(在LTE中,每个子帧的前3个OFDM符号用于传输控制信道,控制信道的接收是基于公共导频(CRS,Cell Reference Signal,小区参考信号)),在时间上,每隔2个OFDM符号会插入参考信号;在频率上,每隔三个子载波会插入参考信号。
OFDM(Orthogonal frequency-division multiplexing,正交频分复用)能够将宽带信道切分成平坦衰落的子信道,能够有效的对抗宽带信道中的频选衰落,使得系统获得很高的频谱效率。OFDM是目前通信系统中最为主流的复用方式,未来的5G系统也将会采用OFDM或者基于OFDM的改进方案作为复用方式。在未来5G系统中,工作在不同的频率上,那么可采用不同的子载波间隔配置,若高低频系统中采用固定的映射方法,就会造成参考信号的密度过小或过密。例如高低频都采用图1中的方法,那么在低频系统中,没有多大问题,但是在高频系统中,由于采用较大的子载波间隔,这时,参考信号的间隔会变大,譬如在高频系统中,以子载波间隔120KHz为例,这时候参考信号的间隔在频域上,就是原来LTE系统的8倍,由于高频信道仍然有一定的频率选择性,那么就造成参考信号在频域上过于稀疏;而参考信号的间隔在时间 上,则只有LTE系统的1/8。由于一般认为高频系统主要用于低速场景,支持的速度远低于低频系统,因此会造成参考信号在时间上的间隔过密。
本发明实施例所应用的场景图如图2所示,本发明主要适用于通信系统,包括发送端和接收端,应理解,图2只是本发明所应用的其中一个场景示意图。发送端和接收端之间的传输,可以通过无线电波来传输,也可以通过可见光、激光、红外、光纤等传输媒介来传输。发送端所涉及的网元可包括基站、无线接入点、用户设备UE,接收端所涉及的网元可包括用户设备、终端、移动台(Mobile station,MS)或者基站等。一种优选的实施例中,发送端为基站,接收端为用户设备;或者,发送端为用户设备,接收端为基站。
在本发明技术方案中,基站端基于已确定的OFDM子载波间隔的配置参数和/或当前工作的频率和/或当前支持的移动速度等信息,确定参考信号在频率域、时间域上的间隔,并在为当前UE调度的时频资源上根据上述间隔在相应的时频资源上映射参考信号。UE端基于OFDM子载波间隔的配置参数和/或当前工作的频率和/或当前支持的移动速度等信息,确定参考信号在频率域、时间域上的间隔,并在基站指定的时频资源范围内根据上述间隔在相应的时频资源上接收参考信号。与现有技术相比,本发明提供的参考信号资源映射方法,能够使得参考信号的密度灵活适应由于系统工作频率不同,引起的OFDM符号长度不同,进而造成参考信号的密度与对应工作频率的信道的相关带宽和相干时间不匹配的问题。
下面以实施例的方式对本发明技术方案做进一步的说明,如图3所示,为本发明实施例中资源映射方法的一个实施例示意图,这里以发送端为UE,接收端为基站为例来进行说明,即为LTE通信过程中的上行收发的过程,包括:
301、基站确定用户设备被调度的时频资源;
302、基站将上行调度信令发送至用户设备,上行调度信令包括调度的时频资源;
该步骤可包括步骤a和步骤b,如下所示:
a、基站向用户设备发送上行调度信令,上行调度信令包括调度的时频资源;
b、用户设备接收基站发送的上行调度信令,上行调度信令包括调度的时 频资源;
在本发明实施例中,基站确定用户设备被调度的时频资源;基站向用户设备发送上行调度信令,上行调度信令包括调度的时频资源;用户设备接收基站发送的上行调度信令,上行调度信令包括调度的时频资源。
303、用户设备获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;
在本发明实施例中,用户设备接收基站发送的上行调度信令,用户设备获取调度的时频资源及子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;这里的子载波间隔配置参数信息可包括:调度的时频资源的OFDM符号编号,和/或,子帧编号,和/或,子载波编号,和/或,子带编号等信息。
304、用户设备根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的时频资源位置;
在本发明实施例中,用户设备根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的时频资源位置;用户设备确定映射参考信号的时频资源位置之后,在时频资源位置上映射参考信号,并在调度时频资源范围内的其他资源上映射数据。
具体的,可包括:
(1)用户设备根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定参考信号的间隔;用户设备根据参考信号的间隔,确定映射参考信号的时频资源位置。
(2)映射参考信号的时频资源位置用(k,l)表示,k为参考信号的子载波编号,l为参考信号的正交频分复用OFDM符号编号;
①用户设备根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的子载波编号k,其中,OFDM符号编号l为第一预设值;
或者,
②用户设备根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的OFDM符号编号l,其中,子载波编号k为第二预设值;
或者,
③用户设备根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的子载波编号k和OFDM符号编号l。
在本发明实施例中,参考信号的间隔可以是时间维度的间隔,也可以是频率维度的间隔,下面对时间维度的间隔和频率维度的间隔分别进行说明:
A:时间维度的间隔:可以以子帧为单位,也可以以时隙为单位,甚至可以以OFDM符号为单位。其中时隙和子帧是由若干OFDM符号组成,例如在LTE中,一个子帧包含14个OFDM符号,一个时隙包含7个OFDM符号,即一个子帧包含2个时隙。
例如,子载波间隔为15*2nKHz,若以OFDM符号为例,这时间隔的取值可以是3*2n个OFDM符号;若以子帧为例,这时间隔取值可以是2n-2个子帧。需要说明的是,当间隔的子帧个数为小数时,表示一个子帧中包含多个用于参考信号收发的资源。
另外,还应理解的是,参考信号间隔的取值也可以根据子载波间隔、工作频率、支持的移动速度和/或调度的带宽信息等查表确定。这里以OFDM符号为例,给出一个表格的例子,如表1所示。其中对于相同工作频率时,不同移动速度是根据实际工作场景确定的,例如3km/h对应是下行接入,而1km/h对应是回程链路的场景。
Figure PCTCN2016099858-appb-000001
Figure PCTCN2016099858-appb-000002
表1
B:频率维度的间隔:可以以子载波为单位,也可以以子带为单位。其中子带是由若干连续的子载波组成。
进一步的,可以根据上述得到的时间维度的间隔或者频率维度的间隔,对本发明实施例中如何得到参考信号的时频资源位置的做一个说明:
1)参考信号的间隔包括时间维度的间隔;
①时间维度的间隔的单位为OFDM符号,子载波间隔配置参数信息包括调度的时频资源的OFDM符号编号;
即在时域上,当间隔是OFDM符号时,可以采用求模的方法确定:
mod(n,N)=a                (1)
其中n是被调度的时频资源的OFDM符号编号,N表示上述确定的时间维度的间隔,a为预设值,取值范围为0≤a<N,那么在所有n中满足公式(1)的值就是我们需要确定的映射参考信号的OFDM符号编号l。
②当时间维度的间隔为子帧时,子载波间隔配置参数信息包括调度的时频资源的子帧编号;
仍然采用公式(1),只是n是被调度的时频资源的子帧编号,在所有n中满足公式(1)的值确定后,进一步确定l为:
l={(n-1)×L+l1,(n-1)×L+l2,...,(n-1)×L+lA}      (2)
其中L表示每个子帧中包含的OFDM符号数量,A表示每个包含参考信号的子帧中,包含的参考信号在时间维度上的数量;应理解,这里的l为一个集合,其中,l1,l2…lA为一系列预设值。
2)参考信号的间隔包括频率维度的间隔;
①频率维度的间隔的单位为子载波,子载波间隔配置参数信息包括调度的时频资源的子载波编号;
在频域上,当频率维度的间隔是子载波时,可以采用如公式(1)的求模方法来确定:
mod(m,M)=b                (3)
其中m是被调度的时频资源的子载波编号,M表示上述确定频率维度的间隔,b为预设值,取值范围为0≤b<M,在所有m中满足公式(3)的值就是我们需要确定的映射参考信号的子载波编号k。
②当频率维度的间隔的单位为子带时,子载波间隔配置参数信息包括调度的时频资源的子带编号;
仍然可以采用公式(3),只是m是被调度的时频资源的子带编号,在所有m中满足公式(3)的值确定后,进一步确定k为:
k={(m-1)×K+k1,(m-1)×K+k2,...,(m-1)×K+kB}      (4)
其中K表示每个子带中包含的子载波数量,B表示每个包含参考信号子带中,包含的参考信号在频率维度上的数量;应理解,这里的k为一个集合,其中,k1,k2…kB为一系列预设值。
(3)用户设备根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,按照预设规则,确定映射参考信号的时频资源位置。
示例性的,在现有技术中,LTE系统的子载波间隔为15KHz,每个子帧包含14个OFDM符号,一个子帧的时长为1ms。那么一个子帧中会在4个等间隔的OFDM符号上放置参考信号,那么,在5G、6G等通信系统中,若子载波间隔为120KHz,那么,120KHz是15KHz的8倍,若是采用固定的映射方法,那么,参考信号的间隔在频域上,就是原来LTE系统的8倍,造成参考信号在频域上过于稀疏;而参考信号的间隔在时间上,则只有LTE系统的1/8,会造成参考信号在时间上的间隔过密。在频率上,每隔三个子载波插入参考信号;在时间上,每隔2个OFDM符号会插入参考信号,可参考前述的表1。
在本发明实施例中,可以采用预设规则,确定映射参考信号的时频资源位置(采用静态配置)。即当子载波间隔为120KHz时,在频率上,可以每隔3*8=24个子载波插入参考信号,在时间上,可以每隔2/8=0.25个OFDM符号插入参考信号,即这就是确定的映射参考信号的时频资源位置。
305、基站获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;
在本发明实施例中,基站获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种。这里的子载波间隔配置参数信息可包括:调度的时频资源的OFDM符号编号,和/或,子帧编号,和/或,子载波编号,和/或,子带编号等信息。
306、基站根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定接收参考信号的时频资源位置;
在本发明实施例中,基站根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定接收参考信号的时频资源位置,并在这些位置上接收参考信号。具体的,可包括:
(1)基站根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定参考信号的间隔;基站根据参考信号的间隔,确定接收参考信号的时频资源位置。
(2)接收参考信号的时频资源位置用(k,l)表示,k为参考信号的子载波编号,l为参考信号的正交频分复用OFDM符号编号;
①基站根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的子载波编号k,其中,OFDM符号编号l为第一预设值(即l为固定值);
或者,
②基站根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的OFDM符号编号l,其中,子载波编号k为第二预设值(即k为固定值);
或者,
③基站根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的子载波编号k和OFDM符号编号l。
(3)基站根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,按照预设规则,确定映射参考信号的时频资源位置。
需要说明的是,上述确定接收参考信号的时频资源位置的详细过程可参考步骤304,与确定映射参考信号的时频资源位置类似,此处不再赘述。用户设备确定映射参考信号的时频资源位置和基站确定接收参考信号的时频资源位置的时序不做具体的限定。
307、用户设备向基站发射参考信号;
在本发明实施例中,该步骤可包括步骤c和步骤d,如下所示:
c、用户设备在时频资源位置映射参考信号;
在本发明实施例中,用户设备在时频资源位置上映射参考信号,并在调度时频资源范围内的其他资源上映射数据,进一步的,用户设备映射完成后将参考信号和数据发射给基站。
d、基站在时频资源位置上接收用户设备发射的参考信号。
在本发明实施例中,基站在确定接收参考信号的时频资源位置上,接收用户设备发射的参考信号,并接收调度时频资源范围内的其他资源上发射的数据。
308、基站根据接收的参考信号进行信道估计。
在本发明实施例中,基站根据接收到的参考信号进行信道估计,并基于估计得到的信道状态信息对调度时频资源内的其他资源上的数据进行接收解调。
在本发明实施例中,与现有技术相比,本发明提供的参考信号资源映射方法,能够使得参考信号的密度适应由于系统工作频率不同,引起的OFDM符号长度不同,进而造成参考信号的密度与对应工作频率的信道的相关带宽和相干时间不匹配的问题。区别于现有技术的改进之处为:现有技术中,在系统设计时,未考虑全频带接入,假设一个唯一的固定的工作频率,基于此工作频率,以及硬件水平和信道场景,选择一种子载波间隔。这种方式下,参考信号在频率域、时间域上的密度是固定的;本发明实施例中,所示的是上行调度的过程,参考信号在频率域、时间域上的密度是可以变的,可根据子载波间隔的配置参数在内的信息确定参考信号在频率域和时间域上的密度,从而能够使得参考信号的密度在考虑系统工作在不同频率采用不同子载波间隔后的,仍然能够与相应信道的相干带宽和相干时间相匹配,满足通信系统的收发要求。
如图4所示,为本发明实施例中资源映射方法的另一个实施例示意图,这 里以发送端为UE,接收端为基站为例来进行说明,即为LTE通信过程中的上行收发的过程,包括:
401、基站确定用户设备被调度的时频资源;
402、基站将上行调度信令发送至用户设备,上行调度信令包括调度的时频资源;
403、基站获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;
404、基站根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定接收参考信号的时频资源位置;
在本发明实施例中,步骤401和402与步骤301和302相同,步骤403-404与步骤305-306相同,此处不再赘述。
405、基站将参考信号位置的配置信息发送至用户设备;
在本发明实施例中,该步骤可包括步骤e和步骤f,如下所示:
e、基站向用户设备发送参考信号位置的配置信息;
在本发明实施例中,基站先确定参考信号位置的配置信息,再向用户设备发送参考信号位置的配置信息。参考信号位置的配置信息的相关信息可以是,参考信号在时间和/或频率上的间隔,进一步当时间间隔是以子帧或时隙为单位,频率间隔是以子带为单位时,上述相关信息还可以进一步包括时间上OFDM符号为单位的偏移,频域上子载波为单位的偏移。
f、用户设备接收参考信号位置的配置信息;
在本发明实施例中,用户设备接收参考信号位置的配置信息;参考信号位置的配置信息的相关信息可以是,参考信号在时间和/或频率上的间隔,进一步当时间间隔是以子帧或时隙为单位,频率间隔是以子带为单位时,上述相关信息还可以进一步包括时间上OFDM符号为单位的偏移,频域上子载波为单位的偏移。
406、用户设备根据参考信号位置的配置信息确定映射参考信号的时频资源位置;
在本发明实施例中,用户设备根据参考信号位置的配置信息确定映射参考 信号的时频资源位置;用户设备在该时频资源位置上映射参考信号。具体的确定方法可以参考图3所示的实施例中的步骤304中的公式(1)-公式(4),此处不再赘述。
407、用户设备向基站发射参考信号;
在本发明实施例中,该步骤包括步骤g和步骤h,如下所示:
g、用户设备向基站发射参考信号;
在本发明实施例中,用户设备确定的时频资源位置映射参考信号之后,在时频资源位置上向基站发射参考信号,并在调度时频资源范围内的其他资源上发射数据。
h、基站按照确定的接收参考信号的时频资源位置,接收用户设备发射的参考信号;
在本发明实施例中,基站在确定接收参考信号的时频资源位置上,接收用户设备发送的参考信号,并接收调度时频资源范围内的其他资源上发射的数据。
408、基站根据接收的参考信号进行信道估计。
在本发明实施例中,步骤408与图3所示的实施例中的步骤308相同,此处不再赘述。
在本发明实施例中,为半静态或者动态的配置的一个实施例,那么,就需要基站向用户设备发送参考信号的配置信息,用户设备再根据参考信号的配置信息确定映射参考信号的时频资源位置,基站确定接收参考信号的时频资源位置没什么变化。
如图5所示,为本发明实施例中资源映射方法的另一个实施例示意图,这里以发送端为基站,接收端为UE为例来进行说明,即为LTE通信过程中的下行收发的过程,包括:
501、基站确定用户设备被调度的时频资源;
502、基站将下行调度信令发送至用户设备,下行调度信令包括调度的时频资源;
该步骤可包括步骤a和步骤b,如下所示:
a、基站向用户设备发送下行调度信令,下行调度信令包括调度的时频资 源;
b、用户设备接收基站发送的下行调度信令,下行调度信令包括调度的时频资源;
在本发明实施例中,基站首先确定用户设备UE的下行服务所使用的时频资源,基站再根据其服务的UE的信道状态、服务请求情况以及当前资源使用情况等,完成调度,为各个UE确定相应的发射算法、及其所使用的时频资源。基站向用户设备发送下行调度信令,下行调度信令包括调度的时频资源。UE接收基站发送的下行调度信令,下行调度信令包括调度的时频资源。
503、基站获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;
在本发明实施例中,基站根据用户设备被调度的时频资源,获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;这里的子载波间隔配置参数信息可包括:调度的时频资源的OFDM符号编号,和/或,子帧编号,和/或,子载波编号,和/或,子带编号等信息。
504、基站根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的时频资源位置;
在本发明实施例中,基站根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的时频资源位置。基站确定映射参考信号的时频资源位置之后,在时频资源位置上映射参考信号,并在调度时频资源范围内的其他资源上映射数据。
具体的,可包括:
(1)基站根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定参考信号的间隔;基站根据参考信号的间隔,确定映射参考信号的时频资源位置。
(2)映射参考信号的时频资源位置用(k,l)表示,k为参考信号的子载波编号,l为参考信号的正交频分复用OFDM符号编号;
①基站根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的 移动速度和调度的带宽信息中的至少一种,确定映射参考信号的子载波编号k,其中,OFDM符号编号l为第一预设值(即l为固定值);
或者,
②基站根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的OFDM符号编号l,其中,子载波编号k为第二预设值(即k为固定值);
或者,
③基站根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的子载波编号k和OFDM符号编号l。
在本发明实施例中,参考信号的间隔可以是时间维度的间隔,也可以是频率维度的间隔,下面对时间维度的间隔和频率维度的间隔分别进行说明:
A:时间维度的间隔:可以以子帧为单位,也可以以时隙为单位,甚至可以以OFDM符号为单位。其中时隙和子帧是由若干OFDM符号组成,例如在LTE中,一个子帧包含14个OFDM符号,一个时隙包含7个OFDM符号,即一个子帧包含2个时隙。
例如,子载波间隔为15*2nKHz,若以OFDM符号为例,这时间隔的取值可以是3*2n个OFDM符号;若以子帧为例,这时间隔取值可以是2n-2个子帧。需要说明的是,当间隔的子帧个数为小数时,表示一个子帧中包含多个用于参考信号收发的资源。
另外,还应理解的是,参考信号间隔的取值也可以根据子载波间隔、工作频率、支持的移动速度和/或调度的带宽信息等查表确定。这里以OFDM符号为例,给出一个表格的例子,如上述表1所示。其中对于相同工作频率时,不同移动速度是根据实际工作场景确定的,例如3km/h对应是下行接入,而1km/h对应是回程链路的场景。
B:频率维度的间隔:可以以子载波为单位,也可以以子带为单位。其中子带是由若干子载波组成的。
进一步的,可以根据上述得到的时间维度的间隔或者频率维度的间隔,对本发明实施例中如何得到参考信号的时频资源位置的做一个说明:
1)参考信号的间隔包括时间维度的间隔;
①时间维度的间隔的单位为OFDM符号,子载波间隔配置参数信息包括调度的时频资源的OFDM符号编号;
即在时域上,当间隔是OFDM符号时,可以采用求模的方法确定:
mod(n,N)=a                (1)
其中n是被调度的时频资源的OFDM符号编号,N表示上述确定的时间维度的间隔,a为预设值,取值范围为0≤a<N,那么在所有n中满足公式(1)的值就是我们需要确定的映射参考信号的OFDM符号编号l。
②当时间维度的间隔为子帧时,子载波间隔配置参数信息包括调度的时频资源的子帧编号;
仍然采用公式(1),只是n是被调度的时频资源的子帧编号,在所有n中满足公式(1)的值确定后,进一步确定l为:
l={(n-1)×L+l1,(n-1)×L+l2,...,(n-1)×L+lA}         (2)
其中L表示每个子帧中包含的OFDM符号数量,A表示每个包含参考信号的子帧中,包含的参考信号在时间维度上的数量;应理解,这里的l为一个集合,其中,l1,l2…lA为一系列预设值。
2)参考信号的间隔包括频率维度的间隔;
①频率维度的间隔的单位为子载波,子载波间隔配置参数信息包括调度的时频资源的子载波编号;
在频域上,当频率维度的间隔是子载波时,可以采用如公式(1)的求模方法来确定:
mod(m,M)=b                 (3)
其中m是被调度的时频资源的子载波编号,M表示上述确定频率维度的间隔,b为预设值,取值范围为0≤b<M,在所有m中满足公式(3)的值就是我们需要确定的映射参考信号的子载波编号k。
②当频率维度的间隔的单位为子带时,子载波间隔配置参数信息包括调度的时频资源的子带编号;
仍然可以采用公式(3),只是m是被调度的时频资源的子带编号,在所 有m中满足公式(3)的值确定后,进一步确定k为:
k={(m-1)×K+k1,(m-1)×K+k2,...,(m-1)×K+kB}        (4)
其中K表示每个子带中包含的子载波数量,B表示每个包含参考信号子带中,包含的参考信号在频率维度上的数量;应理解,这里的k为一个集合,其中,k1,k2…kB为一系列预设值。
(3)基站根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,按照预设规则,确定映射参考信号的时频资源位置。
示例性的,在现有技术中,LTE系统的子载波间隔为15KHz,每个子帧包含14个OFDM符号,一个子帧的时长为1ms。那么一个子帧中会在4个等间隔的OFDM符号上放置参考信号,那么,在5G、6G等通信系统中,若子载波间隔为120KHz,那么,120KHz是15KHz的8倍,若是采用固定的映射方法,那么,参考信号的间隔在频域上,就是原来LTE系统的8倍,造成参考信号在频域上过于稀疏;而参考信号的间隔在时间上,则只有LTE系统的1/8,会造成参考信号在时间上的间隔过密。在频率上,每隔三个子载波插入参考信号;在时间上,每隔2个OFDM符号会插入参考信号,可参考前述的表1。
在本发明实施例中,可以采用预设规则,确定映射参考信号的时频资源位置(采用静态配置)。即当子载波间隔为120KHz时,在频率上,可以每隔3*8=24个子载波插入参考信号,在时间上,可以每隔2/8=0.25个OFDM符号插入参考信号,即这就是确定的映射参考信号的时频资源位置。
505、用户设备获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;
在本发明实施例中,用户设备接收基站发送的下行调度信令,下行调度信令包括调度的时频资源之后,用户设备获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种。这里的子载波间隔配置参数信息可包括:调度的时频资源的OFDM符号编号,和/或,子帧编号,和/或,子载波编号,和/或,子带编号等信息。
506、用户设备根据子载波间隔配置参数信息、当前工作的频率信息、当 前支持的移动速度和调度的带宽信息中的至少一种,确定接收参考信号的时频资源位置;
在本发明实施例中,UE根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定接收参考信号的时频资源位置。
应理解,这里采用静态配置时,UE确定接收参考信号的时频资源位置和基站确定发射参考信号的时频资源位置的方法相同,具体为:
(1)用户设备根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定参考信号的间隔;用户设备根据参考信号的间隔,确定接收参考信号的时频资源位置。
(2)接收参考信号的时频资源位置用(k,l)表示,k为参考信号的子载波编号,l为参考信号的正交频分复用OFDM符号编号;
①用户设备根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定接收参考信号的子载波编号k,其中,OFDM符号编号l为第一预设值;
或者,
②用户设备根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定接收参考信号的OFDM符号编号l,其中,子载波编号k为第二预设值;
或者,
③用户设备根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定接收参考信号的子载波编号k和OFDM符号编号l。
(3)用户设备根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,按照预设规则,确定接收参考信号的时频资源位置。
需要说明的是,上述确定接收参考信号的时频资源位置的详细过程可参考步骤504,与确定映射参考信号的时频资源位置类似,此处不再赘述。用户设备确定映射参考信号的时频资源位置和基站确定接收参考信号的时频资源位 置的时序不做具体的限定。
507、基站向用户设备发射参考信号;
在本发明实施例中,该步骤可包括步骤c和步骤d,如下所示:
c、基站按照时频资源位置向用户设备发射参考信号;
在本发明实施例中,基站按照确定好的时频资源位置,在各UE调度的时频资源范围内,向UE发射参考信号,并在调度范围的其他资源上发射数据。即基站可以按照上述所确定的时频资源位置(k,l),映射后再发射参考信号,也可以根据预设规则所确定发射参考信号的密度,映射后再发射参考信号。
d、用户设备在时频资源位置上接收基站发射的参考信号;
在本发明实施例中,用户设备确定接收参考信号的时频资源位置之后,在时频资源位置上接收基站发射的参考信号,接收调度时频资源范围内的其他资源上发射的数据。
508、用户设备根据接收的参考信号进行信道估计。
在本发明实施例中,UE根据接收到的参考信号进行信道估计,并基于估计得到的信道状态信息对调度时频资源内的其他资源上的数据进行接收解调。
在本发明实施例中,与现有技术相比,本发明提供的参考信号资源映射方法,能够使得参考信号的密度适应由于系统的工作频率不同,而引起的OFDM符号长度不同,进而造成参考信号的密度与对应工作频率的信道的相关带宽和相干时间不匹配的问题。本发明实施例区别于现有技术的改进之处为,现有技术中,在系统设计时,未考虑全频带接入,假设一个唯一的固定的工作频率,基于此工作频率,以及硬件水平和信道场景,选择的一种子载波间隔;这种方式下,参考信号在频率域、时间域上的密度是固定的。本发明实施例中,所示的是下行调度的过程,参考信号在频率域、时间域上的密度是可以变的,可根据子载波间隔的配置参数信息或者其他的信息确定参考信号在频率域和时间域上的密度,从而能够使得参考信号的密度在考虑系统工作在不同频率采用不同子载波间隔后,仍然能够与相应信道的相干带宽和相干时间相匹配,满足通信系统的收发要求。
如图6所示,为本发明实施例中资源映射方法的另一个实施例示意图,这里以发送端为基站,接收端为UE为例来进行说明,即为LTE通信过程中的下 行调度的过程,包括:
601、基站确定用户设备被调度的时频资源;
602、基站将下行调度信令发送至用户设备,下行调度信令包括调度的时频资源;
603、基站获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;
604、基站根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的时频资源位置;
在本发明实施例中,步骤601-604与图5所示的步骤501-504相同,此处不再赘述。
605、基站将参考信号位置的配置信息发送至用户设备;
在本发明实施例中,该步骤可包括步骤e和步骤f,如下所示:
e、基站向用户设备发送参考信号位置的配置信息;
在本发明实施例中,基站先确定参考信号位置的配置信息,再向用户设备发送参考信号位置的配置信息。参考信号位置的配置信息的相关信息可以是,参考信号在时间和/或频率上的间隔,进一步当时间间隔是以子帧或时隙为单位,频率间隔是以子带为单位时,上述相关信息还可以进一步包括时间上OFDM符号为单位的偏移,频域上子载波为单位的偏移。
f、用户设备接收参考信号位置的配置信息;
在本发明实施例中,用户设备接收参考信号位置的配置信息;参考信号位置的配置信息的相关信息可以是,参考信号在时间和/或频率上的间隔,进一步当时间间隔是以子帧或时隙为单位,频率间隔是以子带为单位时,上述相关信息还可以进一步包括时间上OFDM符号为单位的偏移,频域上子载波为单位的偏移。
606、用户设备根据参考信号位置的配置信息确定接收参考信号的时频资源位置;
在本发明实施例中,用户设备根据参考信号位置的配置信息确定接收参考信号的时频资源位置;具体的确定方法可以参考图5所示的实施例中的步骤 504中的公式(1)-公式(4),此处不再赘述。
607、基站向用户设备发射参考信号;
在本发明实施例中,该步骤包括步骤g和步骤h,如下所示:
g、基站按照时频资源位置向用户设备发射参考信号;
在本发明实施例中,基站按照确定好的时频资源位置,在各UE调度的时频资源范围内,向UE发射参考信号,并在调度范围的其他资源上发射数据。即基站可以按照上述所确定的时频资源位置(k,l)映射后再发射参考信号,也可以根据预设规则所确定发射参考信号的密度,映射后再发射参考信号。
h、用户设备在时频资源位置上接收基站发射的参考信号;
在本发明实施例中,用户设备在确定接收参考信号的时频资源位置上,接收基站发射的参考信号,并接收调度时频资源范围内的其他资源上发射的数据。
608、用户设备根据接收的参考信号进行信道估计。
在本发明实施例中,步骤608与图5所示的实施例中的步骤508相同,此处不再赘述。
在本发明实施例中,为半静态或者动态的配置的一个实施例,那么,就需要基站向用户设备发送参考信号的配置信息,用户设备再根据参考信号的配置信息确定接收参考信号的时频资源位置,基站确定发射参考信号的时频资源位置没什么变化。
上述对本发明实施例中资源映射的方法进行了描述,下面对本发明实施例中的发送端和接收端进行描述,如图7所示,为本发明实施例中发送端的一个实施例示意图,可包括:
获取模块701,用于获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;
确定模块702,用于根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的时频资源位置;
发射模块703,用于在所述时频资源位置映射所述参考信号。
可选的,在本发明的一些实施例中,
确定模块702,具体用于根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定参考信号的间隔;根据参考信号的间隔,确定映射参考信号的时频资源位置。
可选的,在本发明的一些实施例中,
确定模块702,具体用于根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,按照预设规则,确定映射参考信号的时频资源位置。
可选的,在本发明的一些实施例中,映射参考信号的时频资源位置用(k,l)表示,k为参考信号的子载波编号,l为参考信号的正交频分复用OFDM符号编号;
确定模块702,具体用于根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的子载波编号k,其中,OFDM符号编号l为第一预设值;
或者,
确定模块702,具体用于根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的OFDM符号编号l,其中,子载波编号k为第二预设值;
或者,
确定模块702,具体用于根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定映射参考信号的子载波编号k和OFDM符号编号l。
可选的,在本发明的一些实施例中,
发射模块703,用于若发送端包括基站,则发射模块将参考信号位置的配置信息向接收端发送;
或者,
获取模块701,用于若发送端包括用户设备,则获取模块接收参考信号位置的配置信息,并根据参考信号位置的配置信息确定映射参考信号的时频资源位置。
如图8所示,为本发明实施例中接收端的一个实施例示意图,可包括:
获取模块801,用于获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;
确定模块802,用于根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定接收参考信号的时频资源位置;
接收模块803,用于在时频资源位置上接收发送端发射的参考信号。
可选的,在本发明的一些实施例中,
确定模块802,具体用于根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定参考信号的间隔;根据参考信号的间隔,确定接收参考信号的时频资源位置。
可选的,在本发明的一些实施例中,
确定模块802,具体用于根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,按照预设规则,确定接收参考信号的时频资源位置。
可选的,在本发明的一些实施例中,接收参考信号的时频资源位置用(k,l)表示,k为参考信号的子载波编号,l为参考信号的OFDM符号编号;
确定模块802,具体用于根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定接收参考信号的子载波编号k,其中,OFDM符号编号l为第一预设值;
或者,
确定模块802,具体用于根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定接收参考信号的OFDM符号编号l,其中,子载波编号k为第二预设值;
或者,
确定模块802,具体用于根据子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种,确定接收参考信号的子载波编号k和OFDM符号编号l。
可选的,在本发明的一些实施例中,接收端还包括:
发射模块803,用于若接收端包括基站,则发射模块向发送端发送参考信 号位置的配置信息,参考信号位置的配置信息用于发送端确定映射参考信号的时频资源位置;
或者,
获取模块801,用于若接收端包括用户设备,则获取模块接收发送端发送的参考信号位置的配置信息,并根据参考信号位置的配置信息确定接收参考信号的时频资源位置。
如图9所示,为本发明实施例中基站的一个实施例示意图,包括:
该基站可因配置或性能不同而产生比较大的差异,可以包括收发器901,一个或一个以上中央处理器(central processing units,CPU)902(例如,一个或一个以上处理器)和存储器903,一个或一个以上存储应用程序9041或数据9042的存储介质904(例如一个或一个以上海量存储设备)。其中,存储器903和存储介质904可以是短暂存储或持久存储。存储在存储介质904的程序可以包括一个或一个以上模块(图9中没示出),每个模块可以包括对云控制器中的一系列指令操作。更进一步地,中央处理器902可以设置为与存储介质904通信,在基站上执行存储介质904中的一系列指令操作。
在本发明实施例中,收发器901,用于执行图3中的步骤302,图4中的步骤402和405,图5中的步骤502和507,图6中的步骤602、605和607。
中央处理器902,用于执行图3中的步骤301,305,306和308,图4中的步骤401、403、404和408,图5中的步骤501、503和504,图6中的步骤601、603和604。
如图10所示,为本发明实施例中用户设备的一个实施例示意图,包括:
该用户设备可以为包括手机、平板电脑、PDA(Personal Digital Assistant,个人数字助理)、POS(Point of Sales,销售终端)、车载电脑等任意终端设备,以用户设备为手机为例:
图10示出的是与本发明实施例提供的终端相关的手机的部分结构的框图。参考图10,手机包括:射频(Radio Frequency,RF)电路1010、存储器1020、输入单元1030、显示单元1040、传感器1050、音频电路1060、无线保真(wireless fidelity,WiFi)模块1070、处理器1080、以及电源1090等部件。本领域技术人员可以理解,图10中示出的手机结构并不构成对手机的限定, 可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置。
下面结合图10对手机的各个构成部件进行具体的介绍:
RF电路1010可用于收发信息或通话过程中,信号的接收和发送,特别地,将基站的下行信息接收后,给处理器1080处理;另外,将设计上行的数据发送给基站。通常,RF电路1010包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器(Low Noise Amplifier,LNA)、双工器等。此外,RF电路1010还可以通过无线通信与网络和其他设备通信。上述无线通信可以使用任一通信标准或协议,包括但不限于全球移动通讯系统(Global System of Mobile communication,GSM)、通用分组无线服务(General Packet Radio Service,GPRS)、码分多址(Code Division Multiple Access,CDMA)、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)、长期演进(Long Term Evolution,LTE)、电子邮件、短消息服务(Short Messaging Service,SMS)等。
存储器1020可用于存储软件程序以及模块,处理器1080通过运行存储在存储器1020的软件程序以及模块,从而执行手机的各种功能应用以及数据处理。存储器1020可主要包括存储程序区和存储数据区,其中,存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等;存储数据区可存储根据手机的使用所创建的数据(比如音频数据、电话本等)等。此外,存储器1020可以包括高速随机存取存储器,还可以包括非易失性存储器,例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
输入单元1030可用于接收输入的数字或字符信息,以及产生与手机的用户设置以及功能控制有关的键信号输入。具体地,输入单元1030可包括触控面板1031以及其他输入设备1032。触控面板1031,也称为触摸屏,可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板1031上或在触控面板1031附近的操作),并根据预先设定的程式驱动相应的连接装置。可选的,触控面板1031可包括触摸检测装置和触摸控制器两个部分。其中,触摸检测装置检测用户的触摸方位,并检测触摸操作带来的信号,将信号传送给触摸控制器;触摸控制器从触摸检测装置上接收触 摸信息,并将它转换成触点坐标,再送给处理器1080,并能接收处理器1080发来的命令并加以执行。此外,可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板1031。除了触控面板1031,输入单元1030还可以包括其他输入设备1032。具体地,其他输入设备1032可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆等中的一种或多种。
显示单元1040可用于显示由用户输入的信息或提供给用户的信息以及手机的各种菜单。显示单元1040可包括显示面板1041,可选的,可以采用液晶显示器(Liquid Crystal Display,LCD)、有机发光二极管(Organic Light-Emitting Diode,OLED)等形式来配置显示面板1041。进一步的,触控面板1031可覆盖显示面板1041,当触控面板1031检测到在其上或附近的触摸操作后,传送给处理器1080以确定触摸事件的类型,随后处理器1080根据触摸事件的类型在显示面板1041上提供相应的视觉输出。虽然在图10中,触控面板1031与显示面板1041是作为两个独立的部件来实现手机的输入和输入功能,但是在某些实施例中,可以将触控面板1031与显示面板1041集成而实现手机的输入和输出功能。
手机还可包括至少一种传感器1050,比如光传感器、运动传感器以及其他传感器。具体地,光传感器可包括环境光传感器及接近传感器,其中,环境光传感器可根据环境光线的明暗来调节显示面板1041的亮度,接近传感器可在手机移动到耳边时,关闭显示面板1041和/或背光。作为运动传感器的一种,加速计传感器可检测各个方向上(一般为三轴)加速度的大小,静止时可检测出重力的大小及方向,可用于识别手机姿态的应用(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等;至于手机还可配置的陀螺仪、气压计、湿度计、温度计、红外线传感器等其他传感器,在此不再赘述。
音频电路1060、扬声器1061,传声器1062可提供用户与手机之间的音频接口。音频电路1060可将接收到的音频数据转换后的电信号,传输到扬声器1061,由扬声器1061转换为声音信号输出;另一方面,传声器1062将收集的声音信号转换为电信号,由音频电路1060接收后转换为音频数据,再将音频 数据输出处理器1080处理后,经RF电路1010以发送给比如另一手机,或者将音频数据输出至存储器1020以便进一步处理。
WiFi属于短距离无线传输技术,手机通过WiFi模块1070可以帮助用户收发电子邮件、浏览网页和访问流式媒体等,它为用户提供了无线的宽带互联网访问。虽然图10示出了WiFi模块1070,但是可以理解的是,其并不属于手机的必须构成,完全可以根据需要在不改变发明的本质的范围内而省略。
处理器1080是手机的控制中心,利用各种接口和线路连接整个手机的各个部分,通过运行或执行存储在存储器1020内的软件程序和/或模块,以及调用存储在存储器1020内的数据,执行手机的各种功能和处理数据,从而对手机进行整体监控。可选的,处理器1080可包括一个或多个处理单元;优选的,处理器1080可集成应用处理器和调制解调处理器,其中,应用处理器主要处理操作系统、用户界面和应用程序等,调制解调处理器主要处理无线通信。可以理解的是,上述调制解调处理器也可以不集成到处理器1080中。
手机还包括给各个部件供电的电源1090(比如电池),优选的,电源可以通过电源管理系统与处理器1080逻辑相连,从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。
尽管未示出,手机还可以包括摄像头、蓝牙模块等,在此不再赘述。
在本发明实施例中,该用户设备所包括的处理器1080还具有以下功能:
执行图3中的步骤303和304,执行图4中的步骤406,执行图5中的步骤505、506和508,执行图6中的步骤606和608。
该用户设备所包括的射频电路1010还具有以下功能:
执行图3中的步骤307,图4中的步骤407。
本发明实施例还提供一种存储介质,需要说明的是,本发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全部或部分可以以软件产口的形式体现出来,该计算机软件产品存储在一个存储介质中,用于储存为上述设备所用的计算机软件指令,其包含用于执行上述第一方面、第二方面或为设备所设计的程序。该存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含,例如,包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。

Claims (22)

  1. 一种资源映射的方法,其特征在于,包括:
    发送端获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;
    所述发送端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定映射参考信号的时频资源位置;
    所述发送端在所述时频资源位置映射所述参考信号。
  2. 根据权利要求1所述的方法,其特征在于,所述发送端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定映射参考信号的时频资源位置,包括:
    所述发送端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定所述参考信号的间隔;
    所述发送端根据所述参考信号的间隔,确定所述映射参考信号的时频资源位置。
  3. 根据权利要求1所述的方法,其特征在于,所述发送端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定映射参考信号的时频资源位置,包括:
    所述发送端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,按照预设规则,确定所述映射参考信号的时频资源位置。
  4. 根据权利要求1-3任一所述的方法,其特征在于,所述映射参考信号的时频资源位置用(k,l)表示,k为参考信号的子载波编号,l为参考信号的正交频分复用OFDM符号编号;
    所述发送端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定映射参考信号的时频资源位置,包括:
    所述发送端根据所述子载波间隔配置参数信息、所述当前工作的频率信 息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定映射参考信号的子载波编号k,其中,所述OFDM符号编号l为第一预设值;
    或者,
    所述发送端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定映射参考信号的OFDM符号编号l,其中,所述子载波编号k为第二预设值;
    或者,
    所述发送端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定映射参考信号的子载波编号k和OFDM符号编号l。
  5. 根据权利要求1-4任一所述的方法,其特征在于,所述方法还包括:
    若所述发送端包括基站,则所述发送端将所述参考信号位置的配置信息向所述接收端发送;
    或者,
    若所述发送端包括用户设备,则所述发送端接收所述参考信号位置的配置信息,并根据所述参考信号位置的配置信息确定映射参考信号的时频资源位置。
  6. 一种资源映射的方法,其特征在于,包括:
    接收端获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;
    所述接收端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定接收参考信号的时频资源位置;
    所述接收端在所述时频资源位置上接收发送端发射的参考信号。
  7. 根据权利要求6所述的方法,其特征在于,所述接收端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定接收参考信号的时频资源位置,包括:
    所述接收端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定所述 参考信号的间隔;
    所述接收端根据所述参考信号的间隔,确定所述接收参考信号的时频资源位置。
  8. 根据权利要求6所述的方法,其特征在于,所述接收端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定接收参考信号的时频资源位置,包括:
    所述接收端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,按照预设规则,确定所述接收参考信号的时频资源位置。
  9. 根据权利要求6-8任一所述的方法,其特征在于,所述接收参考信号的时频资源位置用(k,l)表示,k为参考信号的子载波编号,l为参考信号的OFDM符号编号;
    所述接收端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定接收参考信号的时频资源位置,包括:
    所述接收端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定接收参考信号的子载波编号k,其中,所述OFDM符号编号l为第一预设值;
    或者,
    所述接收端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定接收参考信号的OFDM符号编号l,其中,所述子载波编号k为第二预设值;
    或者,
    所述接收端根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定接收参考信号的子载波编号k和OFDM符号编号l。
  10. 根据权利要求6-9任一所述的方法,其特征在于,所述方法还包括:
    若所述接收端包括基站,则所述接收端向所述发送端发送所述参考信号位置的配置信息,所述参考信号位置的配置信息用于所述发送端确定映射参考信 号的时频资源位置;
    或者,
    若所述接收端包括用户设备,则所述接收端接收所述发送端发送的所述参考信号位置的配置信息,并根据所述参考信号位置的配置信息确定接收参考信号的时频资源位置。
  11. 一种发送端,其特征在于,包括:
    获取模块,用于获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;
    确定模块,用于根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定映射参考信号的时频资源位置;
    映射模块,用于在所述时频资源位置映射所述参考信号。
  12. 根据权利要求11所述的发送端,其特征在于,
    所述确定模块,具体用于根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定所述参考信号的间隔;根据所述参考信号的间隔,确定所述映射参考信号的时频资源位置。
  13. 根据权利要求11所述的发送端,其特征在于,
    所述确定模块,具体用于根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,按照预设规则,确定所述映射参考信号的时频资源位置。
  14. 根据权利要求11-13任一所述的发送端,其特征在于,所述映射参考信号的时频资源位置用(k,l)表示,k为参考信号的子载波编号,l为参考信号的正交频分复用OFDM符号编号;
    所述确定模块,具体用于根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定映射参考信号的子载波编号k,其中,所述OFDM符号编号l为第一预设值;
    或者,
    所述确定模块,具体用于根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定映射参考信号的OFDM符号编号l,其中,所述子载波编号k为第二预设值;
    或者,
    所述确定模块,具体用于根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定映射参考信号的子载波编号k和OFDM符号编号l。
  15. 根据权利要求11-14任一所述的发送端,其特征在于,
    所述发射模块,用于若所述发送端包括基站,则所述发射模块将所述参考信号位置的配置信息向所述接收端发送;
    或者,
    所述获取模块,用于若所述发送端包括用户设备,则所述获取模块接收所述参考信号位置的配置信息,并根据所述参考信号位置的配置信息确定映射参考信号的时频资源位置。
  16. 一种接收端,其特征在于,包括:
    获取模块,用于获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;
    确定模块,用于根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定接收参考信号的时频资源位置;
    接收模块,用于在所述时频资源位置上接收发送端发射的参考信号。
  17. 根据权利要求16所述的接收端,其特征在于,
    所述确定模块,具体用于根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定所述参考信号的间隔;根据所述参考信号的间隔,确定所述接收参考信号的时频资源位置。
  18. 根据权利要求16所述的接收端,其特征在于,
    所述确定模块,具体用于根据所述子载波间隔配置参数信息、所述当前工 作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,按照预设规则,确定所述接收参考信号的时频资源位置。
  19. 根据权利要求16-18任一所述的接收端,其特征在于,所述接收参考信号的时频资源位置用(k,l)表示,k为参考信号的子载波编号,l为参考信号的OFDM符号编号;
    所述确定模块,具体用于根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定接收参考信号的子载波编号k,其中,所述OFDM符号编号l为第一预设值;
    或者,
    所述确定模块,具体用于根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定接收参考信号的OFDM符号编号l,其中,所述子载波编号k为第二预设值;
    或者,
    所述确定模块,具体用于根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定接收参考信号的子载波编号k和OFDM符号编号l。
  20. 根据权利要求16-19任一所述的接收端,其特征在于,所述接收端还包括:
    所述发射模块,用于若所述接收端包括基站,则所述发射模块向所述发送端发送所述参考信号位置的配置信息,所述参考信号位置的配置信息用于所述发送端确定映射参考信号的时频资源位置;
    或者,
    所述获取模块,用于若所述接收端包括用户设备,则所述获取模块接收所述发送端发送的所述参考信号位置的配置信息,并根据所述参考信号位置的配置信息确定接收参考信号的时频资源位置。
  21. 一种发送端,其特征在于,包括:
    收发器,处理器,存储器和总线,所述收发器、所述处理器和所述存储器 通过所述总线连接;
    所述存储器,用于存储操作指令;
    所述处理器,用于获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定映射参考信号的时频资源位置;
    所述收发器,用于在所述时频资源位置映射所述参考信号。
  22. 一种接收端,其特征在于,包括:
    收发器,处理器,存储器和总线,所述收发器、所述处理器和所述存储器通过所述总线连接;
    所述存储器,用于存储操作指令;
    所述处理器,用于获取子载波间隔配置参数信息、当前工作的频率信息、当前支持的移动速度和调度的带宽信息中的至少一种;根据所述子载波间隔配置参数信息、所述当前工作的频率信息、所述当前支持的移动速度和所述调度的带宽信息中的至少一种,确定接收参考信号的时频资源位置;
    所述收发器,用于在所述时频资源位置上接收发送端发射的参考信号。
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