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WO2018192409A1 - Procédé et dispositif de mise en correspondance de signaux de référence de découverte améliorée - Google Patents

Procédé et dispositif de mise en correspondance de signaux de référence de découverte améliorée Download PDF

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Publication number
WO2018192409A1
WO2018192409A1 PCT/CN2018/082814 CN2018082814W WO2018192409A1 WO 2018192409 A1 WO2018192409 A1 WO 2018192409A1 CN 2018082814 W CN2018082814 W CN 2018082814W WO 2018192409 A1 WO2018192409 A1 WO 2018192409A1
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Prior art keywords
edrs
time
enhanced
frequency resource
frequency
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Ceased
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PCT/CN2018/082814
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English (en)
Chinese (zh)
Inventor
周明宇
云翔
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Baicells Technologies Co Ltd
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Baicells Technologies Co Ltd
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Publication date
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Publication of WO2018192409A1 publication Critical patent/WO2018192409A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2669—Details of algorithms characterised by the domain of operation
    • H04L27/2671—Time domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2669—Details of algorithms characterised by the domain of operation
    • H04L27/2672—Frequency domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • the present application relates to the field of communications technologies, and in particular, to an enhanced method and apparatus for sounding reference signal mapping.
  • the communication system provides communication services for user terminals (such as mobile phones) through radio access network devices (such as base stations) and core network devices (such as home location registers).
  • user terminals such as mobile phones
  • radio access network devices such as base stations
  • core network devices such as home location registers.
  • DSR Discovery Reference Signal
  • the sounding signals are transmitted based on narrowband.
  • the channel is always available, and the sounding signal is covered by repeated transmission at time and frequency.
  • DRS Downlink Reference Signal
  • the embodiments of the present application provide an enhanced sounding reference signal mapping method and apparatus for transmitting an enhanced sounding reference signal (eDRS, by introducing more time-frequency resources for a communication system operating in an unlicensed frequency band.
  • Enhanced DRS to achieve DRS coverage enhancement.
  • the embodiment of the present application provides an enhanced method for sounding reference signal mapping, which is applicable to a base station operating in an unlicensed frequency band, and the method includes:
  • eDRS enhanced sounding reference signal
  • the foregoing aspect and any possible implementation manner further provide an implementation manner, when the information of the time-frequency resource includes the occupied resource size of the eDRS, the size of the occupied resource depends on the cell coverage enhancement capability. Level.
  • the occupation The size of the resource is used to indicate that the enhanced synchronization signal occupies a time-frequency resource that is m times the time-frequency resource occupied by the existing synchronization signal, and the value of m is the first specified value.
  • the eDRS includes an enhanced synchronization signal
  • the information of the time-frequency resource includes a frequency domain location of the eDRS
  • the frequency The domain location is used to indicate that the enhanced synchronization signal is located on the center 6 physical resource block pairs of the system bandwidth.
  • the eDRS includes an enhanced synchronization signal
  • the information of the time-frequency resource includes a frequency domain location of the eDRS
  • the frequency The domain location is used to indicate that the enhanced synchronization signal is on a non-central 6 physical resource block pair of system bandwidth.
  • the eDRS includes an enhanced synchronization signal
  • the information of the time-frequency resource includes a time domain location of the eDRS
  • the domain location is used to indicate that the enhanced synchronization signal occupies any one of the orthogonal frequency division multiplexing symbols.
  • the eDRS includes an enhanced synchronization signal
  • the information of the time-frequency resource includes a time domain location of the eDRS
  • the domain location is used to indicate that the enhanced synchronization signal occupies the first designated orthogonal frequency division multiplexing symbol.
  • the first specified orthogonal frequency division multiplexing symbol indicates a symbol that does not include a cell reference signal or a symbol that does not include a physical downlink control channel. Or does not contain the symbol of the cell reference signal and the physical downlink control channel;
  • the cell reference signal includes at least an existing cell reference signal
  • the physical downlink control channel includes at least an existing physical downlink control channel.
  • the eDRS includes an enhanced physical broadcast channel
  • the information of the time-frequency resource includes an occupied resource size of the eDRS
  • the occupied resource size is used to indicate that the enhanced physical broadcast channel occupies time-frequency resources that are n times the time-frequency resources occupied by the existing physical broadcast channel, and the value of n is the second specified value.
  • the eDRS includes an enhanced physical broadcast channel
  • the information of the time-frequency resource includes a frequency domain location of the eDRS
  • the frequency domain location is used to indicate that the enhanced physical broadcast channel is located on a central 6 physical resource block pair of system bandwidth.
  • the eDRS includes an enhanced physical broadcast channel
  • the information of the time-frequency resource includes a frequency domain location of the eDRS
  • the frequency domain location is used to indicate that the enhanced physical broadcast channel is located on a non-central 6 physical resource block pair of system bandwidth.
  • the eDRS includes an enhanced physical broadcast channel
  • the information of the time-frequency resource includes a time domain location of the eDRS
  • the time domain location is used to indicate that the enhanced physical broadcast channel occupies any one of the orthogonal frequency division multiplexing symbols.
  • the eDRS includes an enhanced physical broadcast channel
  • the information of the time-frequency resource includes a time domain location of the eDRS
  • the time domain location is for the enhanced physical broadcast channel to occupy a second designated orthogonal frequency division multiplexing symbol.
  • the cell reference signal includes at least an existing cell reference signal.
  • the information of the time-frequency resource includes a frequency domain of the eDRS In position, if the enhanced synchronization signal and the enhanced physical broadcast channel are both transmitted on a central 6 physical resource block pair of system bandwidth, the enhanced synchronization signal transmission priority is higher than the enhanced physical The transmission priority of the broadcast channel.
  • the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, where information of the time-frequency resource includes the time-frequency resource In the frequency domain location, if the enhanced synchronization signal and the enhanced physical broadcast channel are transmitted on a central 6 physical resource block pair or a non-central 6 physical resource block pair in a system bandwidth, the enhanced synchronization signal
  • the transmission priority is the same as the transmission priority of the enhanced physical broadcast channel.
  • the foregoing aspect and any possible implementation manner further provide an implementation manner, when the information of the time-frequency resource includes a time domain location of the time-frequency resource, the eDRS and an existing sounding reference signal ( The relative time relationship of DRS) is fixed.
  • the foregoing aspect and any possible implementation manner further provide an implementation manner, when the information of the time-frequency resource includes a time domain location of the time-frequency resource, a relative time relationship between the eDRS and the DRS is according to The time guidelines are flexible.
  • time criterion includes a time point when the mechanism is said to be successful, and the eDRS available time period.
  • the embodiment of the present application provides an enhanced method for sounding reference signal mapping, which is applicable to a terminal operating in an unlicensed frequency band, and the method includes:
  • the method further includes:
  • the embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, which is applicable to a base station operating in an unlicensed frequency band, and the apparatus includes:
  • a determining unit configured to determine information of a time-frequency resource for carrying an enhanced sounding reference signal (eDRS) including an enhanced synchronization signal, an enhanced reference signal, and an enhancement according to the cell coverage enhancement capability
  • eDRS enhanced sounding reference signal
  • mapping unit configured to map the eDRS according to the information of the time-frequency resource
  • a sending unit configured to send the time-frequency resource with the eDRS mapped to the terminal.
  • the foregoing aspect and any possible implementation manner further provide an implementation manner, when the information of the time-frequency resource includes the occupied resource size of the eDRS, the size of the occupied resource depends on the cell coverage enhancement capability. Level.
  • the occupation The size of the resource is used to indicate that the enhanced synchronization signal occupies a time-frequency resource that is m times the time-frequency resource occupied by the existing synchronization signal, and the value of m is the first specified value.
  • the eDRS includes an enhanced synchronization signal
  • the information of the time-frequency resource includes a frequency domain location of the eDRS
  • the frequency The domain location is used to indicate that the enhanced synchronization signal is located on the center 6 physical resource block pairs of the system bandwidth.
  • the eDRS includes an enhanced synchronization signal
  • the information of the time-frequency resource includes a frequency domain location of the eDRS
  • the frequency The domain location is used to indicate that the enhanced synchronization signal is on a non-central 6 physical resource block pair of system bandwidth.
  • the eDRS includes an enhanced synchronization signal
  • the information of the time-frequency resource includes a time domain location of the eDRS
  • the domain location is used to indicate that the enhanced synchronization signal occupies any one of the orthogonal frequency division multiplexing symbols.
  • the eDRS includes an enhanced synchronization signal
  • the information of the time-frequency resource includes a time domain location of the eDRS
  • the domain location is used to indicate that the enhanced synchronization signal occupies the first designated orthogonal frequency division multiplexing symbol.
  • the first specified orthogonal frequency division multiplexing symbol indicates a symbol that does not include a cell reference signal or a symbol that does not include a physical downlink control channel. Or does not contain the symbol of the cell reference signal and the physical downlink control channel;
  • the cell reference signal includes at least an existing cell reference signal
  • the physical downlink control channel includes at least an existing physical downlink control channel.
  • the eDRS includes an enhanced physical broadcast channel
  • the information of the time-frequency resource includes an occupied resource size of the eDRS
  • the occupied resource size is used to indicate that the enhanced physical broadcast channel occupies time-frequency resources that are n times the time-frequency resources occupied by the existing physical broadcast channel, and the value of n is the second specified value.
  • the eDRS includes an enhanced physical broadcast channel
  • the information of the time-frequency resource includes a frequency domain location of the eDRS
  • the frequency domain location is used to indicate that the enhanced physical broadcast channel is located on a central 6 physical resource block pair of system bandwidth.
  • the eDRS includes an enhanced physical broadcast channel
  • the information of the time-frequency resource includes a frequency domain location of the eDRS
  • the frequency domain location is used to indicate that the enhanced physical broadcast channel is located on a non-central 6 physical resource block pair of system bandwidth.
  • the eDRS includes an enhanced physical broadcast channel
  • the information of the time-frequency resource includes a time domain location of the eDRS
  • the time domain location is used to indicate that the enhanced physical broadcast channel occupies any one of the orthogonal frequency division multiplexing symbols.
  • the eDRS includes an enhanced physical broadcast channel
  • the information of the time-frequency resource includes a time domain location of the eDRS
  • the time domain location is for the enhanced physical broadcast channel to occupy a second designated orthogonal frequency division multiplexing symbol.
  • the cell reference signal includes at least an existing cell reference signal.
  • the information of the time-frequency resource includes a frequency domain of the eDRS In position, if the enhanced synchronization signal and the enhanced physical broadcast channel are both transmitted on a central 6 physical resource block pair of system bandwidth, the enhanced synchronization signal transmission priority is higher than the enhanced physical The transmission priority of the broadcast channel.
  • the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, where information of the time-frequency resource includes the time-frequency resource In the frequency domain location, if the enhanced synchronization signal and the enhanced physical broadcast channel are transmitted on a central 6 physical resource block pair or a non-central 6 physical resource block pair in a system bandwidth, the enhanced synchronization signal
  • the transmission priority is the same as the transmission priority of the enhanced physical broadcast channel.
  • the foregoing aspect and any possible implementation manner further provide an implementation manner, when the information of the time-frequency resource includes a time domain location of the time-frequency resource, the eDRS and an existing sounding reference signal ( The relative time relationship of DRS) is fixed.
  • the foregoing aspect and any possible implementation manner further provide an implementation manner, when the information of the time-frequency resource includes a time domain location of the time-frequency resource, a relative time relationship between the eDRS and the DRS is according to The time guidelines are flexible.
  • time criterion includes a time point when the mechanism is said to be successful, and the eDRS available time period.
  • the embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, which is applicable to a terminal operating in an unlicensed frequency band, and the device includes:
  • the receiving unit is configured to receive the eDRS sent by the base station according to the information of the time-frequency resource.
  • the apparatus further includes:
  • a blind detection unit configured to perform blind detection on the received eDRS to decode the eDRS.
  • an embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, which is applicable to a base station operating in an unlicensed frequency band, the device including a processor, a memory, and a transceiver; the processor, the memory, and The transceiver communicates over a bus; the memory is configured with computer code, the processor being capable of invoking the code to control the transceiver;
  • the processor is configured to determine, by the transceiver, information about a time-frequency resource for carrying an enhanced sounding reference signal (eDRS) including an enhanced synchronization according to a cell coverage enhancement capability.
  • eDRS enhanced sounding reference signal
  • the processor is configured to map the eDRS by using the transceiver according to the information of the time-frequency resource;
  • the processor is configured to send the time-frequency resource mapped with the eDRS to the terminal by using the transceiver.
  • an embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, which is applicable to a terminal operating in an unlicensed frequency band, the device comprising a processor, a memory, and a transceiver; the processor, the memory, and The transceiver communicates over a bus; the memory is configured with computer code, the processor being capable of invoking the code to control the transceiver;
  • the processor is configured to receive an eDRS sent by the base station by using the transceiver according to the information of the time-frequency resource.
  • An embodiment of the present application provides an enhanced method for sounding reference signal mapping, and a device for operating in an unlicensed frequency band, introducing more time according to information of a time-frequency resource for carrying an enhanced sounding reference signal.
  • the frequency resource carries the enhanced sounding reference signal, and the base station and the terminal interact to complete the transmission of the eDRS, and realize the repeated transmission of the sounding reference signal on the time-frequency, improve the energy of the sounding reference signal, and realize the coverage enhancement of the sounding reference signal.
  • FIG. 1 is a flowchart of a method for enhancing sounding reference signal mapping according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of mapping of an enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 3(a) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 3(b) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 3(c) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 3(d) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 4(a) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 4(b) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 4(c) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 4(d) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • 4(e) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 4(x) is a diagram of a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 5(a) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 5(b) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 5(c) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 5(x) is a diagram of a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 6(a) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 6(b) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 6(c) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 6(x) is a diagram of a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 7(a) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 7(b) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 7(x) is a diagram of a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 8(a) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 8(b) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 8(x) is a diagram of a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 9(a) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 9(b) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 9(x) is a diagram of a mapping diagram of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 11(a) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 11(b) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 11(c) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 11(d) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application.
  • FIG. 12 is a flowchart of another method for enhancing sounding reference signal mapping according to an embodiment of the present disclosure.
  • FIG. 13 is a structural block diagram of an enhanced sounding reference signal mapping apparatus according to an embodiment of the present application.
  • FIG. 14 is a structural block diagram of an enhanced sounding reference signal mapping apparatus according to an embodiment of the present application.
  • FIG. 15 is a structural block diagram of another enhanced sounding reference signal mapping apparatus according to an embodiment of the present disclosure.
  • 16 is a physical structural diagram of an enhanced sounding reference signal mapping apparatus according to an embodiment of the present application.
  • FIG. 17 is a structural diagram of an enhanced sounding reference signal mapping apparatus according to an embodiment of the present application.
  • first and second may be used to describe the specified orthogonal frequency division multiplexing symbols in the embodiments of the present application, these specified orthogonal frequency division multiplexing symbols should not be limited to these terms. These terms are only used to distinguish the specified orthogonal frequency division multiplexing symbols from each other.
  • the first designated orthogonal frequency division multiplexing symbol may also be referred to as a second designated orthogonal frequency division multiplexing symbol without departing from the scope of the embodiments of the present application.
  • the cross-frequency division multiplexing symbols may also be referred to as designated orthogonal frequency division multiplexing symbols.
  • the word “if” as used herein may be interpreted as “when” or “when” or “in response to determining” or “in response to detecting.”
  • the phrase “if determined” or “if detected (conditions or events stated)” may be interpreted as “when determined” or “in response to determination” or “when detected (stated condition or event) “Time” or “in response to a test (condition or event stated)”.
  • An embodiment of the present application provides an enhanced method for sounding reference signal mapping, which is applied to a mobile communication system in an unlicensed frequency band (especially for a cellular communication system operating independently in an unlicensed frequency band, such as MulteFire (MF)).
  • the coverage of the unlicensed band enhances the transmission of enhanced sounding reference signals between the terminal and the base station.
  • the mobile communication technology of the present application may be WCDMA (Wideband Code Division Multiple Access), CDMA2000 (Code Division Multiple Access 2000), and TD-SCDMA (Time Division-Synchronous Code Division). Multiple Access, Time Division Synchronous Code Division Multiple Access), WiMAX (Worldwide Interoperability for Microwave Access), LTE/LTE-A (Long Term Evolution/Long Term Evolution-Advanced) ), LAA (Licensed-Assisted Access, wireless access based on licensed bands), MulteFire, and subsequent fifth, sixth, and Nth generation mobile communication technologies.
  • WCDMA Wideband Code Division Multiple Access
  • CDMA2000 Code Division Multiple Access 2000
  • TD-SCDMA Time Division-Synchronous Code Division
  • Multiple Access Time Division Synchronous Code Division Multiple Access
  • WiMAX Worldwide Interoperability for Microwave Access
  • LTE/LTE-A Long Term Evolution/Long Term Evolution-Advanced
  • LAA Licensed-Assisted Access, wireless access based on licensed bands
  • MulteFire and subsequent
  • MulteFire is a wireless access technology that extends LTE to unlicensed bands, where unlicensed band carriers can be serviced independently without the aid of licensed band carriers.
  • This technology has also become stand-alone LTE-U (stand-alone LTE-U).
  • the MF physical layer introduces a WiFi-like carrier sensing technology (LBT, Listen Before) Talk) mechanism.
  • LBT WiFi-like carrier sensing technology
  • the base station refers to a form of a radio station, and refers to a radio access network device that transmits various channels or signals to a terminal through a mobile communication switching center in a certain radio coverage area.
  • the terminal refers to a terminal side product that can support the communication protocol of the land mobile communication system, and a special modem module (Wireless Modem), which can be integrated by various types of terminal forms such as a mobile phone, a tablet computer, and a data card. Communication function.
  • the base station and the terminal in the embodiment of the present application all work in an unlicensed frequency band, and are simply referred to as a base station and a terminal for convenience of description.
  • the method includes:
  • the base station determines, according to the cell coverage enhancement capability, the information of the time-frequency resource used to carry the enhanced Discovery Reference Signal (eDRS).
  • eDRS enhanced Discovery Reference Signal
  • the eDRS includes one or more of an enhanced synchronization signal, an enhanced reference signal, an enhanced physical broadcast channel, and an enhanced data channel.
  • the information of the time-frequency resource includes one or more of an occupied resource size, a frequency domain location, and a time domain location of the eDRS.
  • the information of the time-frequency resource is used to indicate mapping and transmission of the eDRS.
  • the present application introduces an additional time-frequency resource transmission DRS, so that the coverage enhancement user can perform synchronization to obtain system information.
  • the DRS carried on the additionally introduced time-frequency resource is named eDRS, and the original DRS is named as the existing DRS.
  • the existing DRS includes an existing synchronization signal (legacy Sync), an existing reference signal, an existing physical broadcast channel, an existing data channel, and the eDRS includes an enhanced synchronization signal (enhanced Sync, e-Sync), an enhanced reference signal, and an enhancement.
  • the synchronization signal refers to a primary synchronization signal/secondary synchronization signal (PSS/SSS, Primary Synchronization Signal/Secondary Synchronization Signal), an MF primary synchronization signal/MF secondary synchronization signal (MF-PSS/MF-SSS, Multefire Primary Synchronization Signal /Multefire Secondary Synchronization Signal).
  • PSS/SSS Primary Synchronization Signal/Secondary Synchronization Signal
  • MF-PSS/MF-SSS Multefire Primary Synchronization Signal /Multefire Secondary Synchronization Signal
  • the reference signal refers to a cell reference signal (CRS, Cell Reference Signal) and a configured channel state information reference signal (CSI-RS, Channel State Information-Reference Signal).
  • CRS Cell Reference Signal
  • CSI-RS Channel State Information-Reference Signal
  • the physical broadcast channel refers to the MF Physical Broadcast Channel (MF-PBCH, Multefire Physical Broadcast Channel).
  • MF-PBCH MF Physical Broadcast Channel
  • MIB-MF Master Information Block Multefire
  • the data channel includes a physical downlink shared channel (PDSCH) and a corresponding physical downlink control channel (PDCCH, Physical Downlink Control Channel).
  • PDSCH physical downlink shared channel
  • PDCCH Physical Downlink Control Channel
  • SIB-MF1 System Information Block 1
  • SIB-MF1 System Information Block Multefire 1
  • the base station maps the eDRS according to information about the time-frequency resource.
  • the eNodeB maps the eDRS to the corresponding time-frequency resource according to the specific information of the video resource, such as the occupied resource size, the frequency domain location, and the time domain location of the eDRS.
  • the base station sends the time-frequency resource with the eDRS mapped to the terminal.
  • the terminal in step 103 refers to a terminal that performs coverage enhancement on the user.
  • the terminal is hereinafter referred to as a terminal.
  • the terminal receives the eDRS sent by the base station according to the information of the time-frequency resource.
  • the terminal receives the eDRS according to the information of the specific time-frequency resource.
  • An embodiment of the present application provides an enhanced method for sounding reference signal mapping.
  • more time-frequency resources are introduced according to information of a time-frequency resource used to carry an enhanced sounding reference signal.
  • the enhanced sounding reference signal is carried by the base station and the terminal to complete the transmission of the eDRS, and the repeated transmission of the sounding reference signal at the time and frequency is realized, the energy of the sounding reference signal is improved, and the coverage enhancement of the sounding reference signal is realized.
  • the size of the occupied resource depends on the level of the cell coverage enhancement capability.
  • the system's maximum coverage enhancement capability can be divided into multiple levels, and each cell can be enhanced according to different maximum coverage enhancement capabilities (for example, the system's maximum coverage enhancement capability has three levels of ⁇ 8dB, 4dB, 0dB ⁇ .
  • the cell Without coverage enhancement a set of time-frequency resources of corresponding size is determined for transmitting eDRS. That is, the size of the time-frequency resource used to carry the eDRS depends on the cell coverage enhancement capability.
  • the value of the maximum coverage enhancement capability is for the channel with the worst coverage, and the coverage enhancement of other channels is based on the coverage difference before the worst channel, correspondingly to complement different coverage enhancements. Therefore, the coverage enhancement of different channels is different, and correspondingly, time-frequency resources of different sizes and different positions are required.
  • the embodiments of the present application introduce the information of the enhanced sounding reference signal separately based on the enhanced synchronization signal (for coverage enhanced user synchronization) and the enhanced physical broadcast channel (for coverage enhanced user acquisition system information MIB-MF).
  • the size of the occupied resource is used to indicate the enhanced synchronization.
  • the time-frequency resource occupied by the signal is m times the time-frequency resource occupied by the existing synchronization signal, and the value of m is the first specified value.
  • the existing synchronization signal is repeatedly transmitted m+1 times, that is, the existing synchronization signal is enhanced by m+1 times.
  • the first specified value may be any non-negative number.
  • a certain multiple of the existing synchronization signal is repeatedly transmitted by transmitting the enhanced synchronization signal.
  • the size of the resource occupied by the enhanced synchronization signal depends on the coverage capability of the cell, that is, the number of repeated transmissions of the existing synchronization signal depends on the coverage enhancement capability of one cell.
  • the size relationship between the enhanced sync signal and the existing sync signal is exemplified by a specific number.
  • the coverage of the existing synchronization signal is enhanced to ⁇ 0, 2.5, 6.5 ⁇ dB.
  • the maximum number of repeated transmissions of the existing synchronization signal may be taken as ⁇ 1, 2, 5 ⁇ to achieve different coverage enhancement capabilities of the cell. That is, the introduced enhanced synchronization signal occupies the time-frequency resource, and the existing synchronization signal occupies ⁇ 0, 1, 4 ⁇ times of the time-frequency resource, that is, m is ⁇ 0, 1, 4 ⁇ .
  • Example 2 the possible maximum number of repeated transmissions of the existing synchronization signal is ⁇ 1, 2, 4.5 ⁇ . That is, the size of the time-frequency resource occupied by the enhanced synchronization signal is ⁇ 0, 1, 3.5 ⁇ times that of the existing synchronization signal, that is, m is ⁇ 0, 1, 3.5 ⁇ .
  • the maximum number of repeated transmissions of the existing synchronization signal is ⁇ 1, 2, 4 ⁇ times. That is, the size of the time-frequency resource occupied by the enhanced synchronization signal is ⁇ 0, 1, 3 ⁇ times that of the existing synchronization signal, that is, m is ⁇ 0, 1, 3, 3.
  • Example 4 the possible maximum number of repeated transmissions of the existing synchronization signal is ⁇ 1, 1.5, 4.5 ⁇ .
  • the introduced enhanced synchronization signal occupies the time-frequency resource, and the existing synchronization signal occupies ⁇ 0, 0.5, 3.5 ⁇ times of the time-frequency resource, that is, m is ⁇ 0, 0.5, 3.5 ⁇ .
  • the coverage enhancement is assumed to be based on the existing PSS/SSS and MF-PSS/SSS (that is, the existing synchronization signal occupies a total of 4 OFDM (Orthogonal Frequency Division Multiplexing) symbols.
  • N 4*m, that is, the value of N in the example 1 is ⁇ 0, 4, 16 ⁇ , and the value of N in the example 2 is ⁇ 0, 4, 14 ⁇ , the value of N in Example 3 is ⁇ 0, 4, 12 ⁇ , and the value of N in Example 4 is ⁇ 0, 2, 14 ⁇ .
  • the coverage enhancement is based on the existing MF-PSS/SSS or PSS/SSS (that is, the existing synchronization signal occupies 2 OFDM symbols in total)
  • the values of N in Example 1, Example 2, Example 3, and Example 4 They are ⁇ 0, 2, 8 ⁇ , ⁇ 0, 2, 7 ⁇ , ⁇ 0, 2, 6 ⁇ , ⁇ 0, 1, 7 ⁇ .
  • the coverage enhancement of the existing synchronization signal (legacy Sync) based on the 4-OFDM symbol (identified by the OFDM symbol in the figure) is given. That is, an enhanced synchronization signal (e-Sync) of the N-symbol is obtained by the existing PSS/SSS and MF-PSS/MF-SSS.
  • e-Sync enhanced synchronization signal
  • the transmission bandwidth of the enhanced synchronization signal is 6 PRB (Physical Resource Block) pairs
  • FIG. 2 shows a schematic diagram of one of the PRB pairs (the other five are the same).
  • each small grid refers to a Resource Element (RE).
  • mapping of the subsequent e-Sync in the embodiment of the present application is based on the legacy Sync of the 4-OFDM symbol (ie, the legacy Sync includes the PSS/SSS and the MF-PSS/MF-SSS), and the subsequent ones are no longer used.
  • the legacy Sync includes the PSS/SSS and the MF-PSS/MF-SSS
  • the subsequent ones are no longer used.
  • the frequency domain location is used to indicate the enhanced synchronization signal.
  • the enhanced synchronization signal may be located on the center of the system bandwidth of 6 PRB pairs, or may be located on the non-central 6 PRB pairs of the system bandwidth.
  • the enhanced synchronization signal occupies N OFDM symbols, based on FIG. 3(a) - FIG. 3(d), the enhanced synchronization signal and the existing The frequency domain positional relationship of the synchronization incoming signal is further explained. As shown in Fig. 3(a) and Fig. 3(b), the enhanced synchronization signal is located in the six PRB pairs in the center of the system bandwidth, and the enhanced synchronization signal of the N-symbol in Fig. 3(a) is different from the existing synchronization signal.
  • the enhanced synchronization signal in Figure 3(b) is in the same TTI as the existing synchronization signal. As shown in Figures 3(c) and 3(d), the enhanced synchronization signal can also be located in a non-central 6 PRB pair of system bandwidth. 3(c) The enhanced synchronization signal of the N-symbol is located in a plurality of sets of non-central 6 PRBs within the TTI of the existing synchronization signal, and the enhanced synchronization signal of the N-symbol of FIG. 3(d) is located in a plurality of different TTIs. Groups of non-centered 6 PRB pairs and centers 6 PRB pairs.
  • the positional relationship with the existing broadcast channel may also be mapped according to the positional relationship in the examples of FIGS. 3(a) to 3(d). No more one-by-one illustration here.
  • the time domain location is used to indicate the enhanced synchronization signal.
  • the time domain location, the enhanced synchronization signal may occupy any one of the OFDM symbols, and may also occupy the first designated orthogonal frequency division multiplexing symbol.
  • the first designated orthogonal frequency division multiplexing symbol indicates a symbol that does not include a cell reference signal (CRS) or a symbol that does not include a physical downlink control channel (PDCCH) or does not include a cell reference signal and a physical downlink control channel. symbol.
  • CRS cell reference signal
  • PDCH physical downlink control channel
  • the enhanced synchronization signal is transmitted in any one of the OFDM symbols, meaning that the RE of the enhanced synchronization signal can puncture any of the signals within the system.
  • the enhanced synchronization signal is transmitted on an OFDM symbol that does not contain a CRS, meaning that the RE of the enhanced synchronization signal can puncture other signals than the CRS.
  • the enhanced synchronization signal is transmitted on an OFDM symbol that does not contain a PDCCH, that is, the enhanced synchronization signal can puncture other signals than the PDCCH.
  • the enhanced synchronization signal is transmitted on OFDM symbols that do not contain CRS and PDCCH, ie, the enhanced synchronization signal can puncture other signals than CRS and PDCCH.
  • the cell reference signal includes at least an existing cell reference signal.
  • the cell reference signal includes an existing cell reference signal and an enhanced cell reference signal.
  • the physical downlink control channel includes at least an existing physical downlink control channel.
  • the physical downlink control channel includes an existing physical downlink control channel and an enhanced physical downlink control channel.
  • FIG. 4(a) to FIG. 4(e) and FIG. 5(a) to FIG. 5(c) Show examples.
  • 4(x) and 5(x) are illustrations of FIGS. 4(a) to 4(e) and 5(a) to 5(c), respectively.
  • the transmission of the enhanced synchronization signal is not puncture CRS and PDCCH, and the enhanced synchronization signal does not conflict with the transmission of the CRS (ie, the enhanced synchronization signal is mapped to the OFDM without CRS).
  • the existing synchronizing signal is enhanced by 4 times
  • Fig. 5(b) the existing synchronizing signal is enhanced by 4.5 times
  • Fig. 5(c) shows that the existing synchronizing signal is enhanced by 5 times.
  • each small grid refers to an RE.
  • the occupied resource size is used to indicate the enhanced physical
  • the time-frequency resource occupied by the broadcast channel is n times of the time-frequency resource occupied by the existing physical broadcast channel, and the value of n is the second specified value.
  • the time-frequency resource occupied by the enhanced physical broadcast channel is n times of the time-frequency resource occupied by the existing physical broadcast channel, that is, the existing physical broadcast channel is repeatedly transmitted n+1 times, that is, the existing physical broadcast channel is enhanced by n+1. Times.
  • the second specified value may be any non-negative number.
  • the eDRS when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate the enhanced physical
  • the enhanced physical broadcast channel may be located on the center of the system bandwidth of six physical resource block pairs, or may be located on the non-central 6 PRB pairs of the system bandwidth.
  • the frequency domain positional relationship between the enhanced MF-PBCH and the existing MF-PBCH is further explained.
  • the enhanced MF-PBCH When the enhanced MF-PBCH is located on the center 6 PRB pairs of the system bandwidth, the enhanced MF-PBCH and the existing MF-PBCH may not be in the same TTI or in the same TTI.
  • the enhanced MF-PBCH When the enhanced MF-PBCH is located on a non-central 6 PRB pair of system bandwidth, the enhanced MF-PBCH and the existing MF-PBCH may not be in the same TTI or in the same TTI.
  • the time domain location is used to indicate the enhanced physical
  • the enhanced physical broadcast channel may occupy any one of the orthogonal frequency division multiplexing symbols, or may occupy the second specified orthogonal frequency division multiplexing symbol.
  • the second designated orthogonal frequency division multiplexing symbol represents a symbol that does not include a cell reference signal.
  • the cell reference signal includes at least an existing cell reference signal.
  • the cell reference signal includes an existing cell reference signal and an enhanced cell reference signal.
  • the enhanced MF-PBCH when transmitting the enhanced MF-PBCH, if the OFDM symbol carrying the existing MF-PBCH does not contain the CRS, the enhanced MF-PBCH may be mapped to the OFDM symbol without the CRS; or mapped to the CRS-containing On the OFDM symbol, simultaneously puncture CRS. If the OFDM symbol carrying the existing MF-PBCH contains a CRS, the enhanced MF-PBCH is mapped to an OFDM symbol containing a CRS or no CRS. For an OFDM symbol containing a CRS, the CRS may be repeatedly transmitted at a corresponding time-frequency resource, or the CRS may not be transmitted.
  • the eDRS when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain position of the eDRS, if the enhanced synchronization signal is The enhanced physical broadcast channels are all transmitted on a central 6 physical resource block pair of the system bandwidth, and the enhanced synchronization signal transmission priority is higher than the enhanced physical broadcast channel transmission priority.
  • the system uses all available resources to transmit the enhanced synchronization signal as much as possible before starting to transmit the enhanced MF-PBCH. That is, the transmission of the enhanced synchronization signal takes precedence over the enhanced MF-PBCH.
  • the eDRS when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the time-frequency resource, if the enhanced synchronization Signaling and the enhanced physical broadcast channel are transmitted on a central 6 physical resource block pair or a non-central 6 physical resource block pair of a system bandwidth, the enhanced synchronization signal transmission priority and the enhanced physical broadcast channel The transmission priority is the same.
  • the enhanced synchronization signal transmission priority is the same as the transmission priority of the enhanced physical broadcast channel, it means that the system transmits the enhanced synchronization signal and the enhanced MF-PBCH in parallel.
  • FIG. 9(a) illustrates the mapping of e-Sync and enhanced MF-PBCH.
  • 6(x), 7(x), 8(x), and 9(x) are respectively shown in Fig. 6(a) - Fig. 6(c) and Fig. 7(a) - Fig. 7(b) Fig. 8(a) - Fig. 8(b), Fig. 9(a) - Fig.
  • FIG. 9(b) are legends. And for convenience of illustration, FIG. 6(a) - FIG. 6(c), FIG. 7(a), FIG. 7(b), FIG. 8(a), FIG. 8(b), FIG. 9(a), FIG. In (b), the enhanced synchronization signal is transmitted only within the center 6 PRB pairs of the system bandwidth, and only one of the PRB pairs is shown in the figure (the other five are the same).
  • the existing synchronizing signal is enhanced by 4 times, and the existing MF-PBCH is enhanced by 6 times.
  • the existing synchronizing signal is enhanced by 4.5 times, and the existing MF-PBCH is enhanced by 6 times.
  • the existing synchronizing signal is enhanced by 4.5 times, and the existing MF-PBCH is enhanced by 7 times.
  • the existing synchronizing signal is enhanced by 5 times, and the existing MF-PBCH is enhanced by 6.5 times.
  • eMF-PBCH #1 2, 3, 4, .
  • the time-frequency resources used for transmitting the eDRS can be obtained only by time domain extension, or can be obtained only by frequency domain extension (ie, non-central 6 PRBs), or can be extended by both the time domain and the frequency domain.
  • the TTI containing eDRS can also contain the existing DRS.
  • the relative time relationship between the eDRS and the existing DRS is fixed; or flexible according to the time criterion.
  • the time criterion includes a time point when the mechanism is said to be successful, and the eDRS available time period.
  • the transmission time of the eDRS may be greater than 1 TTI.
  • the relative time relationship between existing DRS and eDRS can be fixed. For example, the existing DRS is always sent first, then the eDRS is sent, and, in view of the fact that other data channels need to be transmitted, the existing DRS is always transmitted in TTI0 or TTI5, and the eDRS is sent in the TTI after TTI0 or TTI5, as shown in Figure 10 is a schematic view. Further, if there is no user-specific data, the existing DRS can start at any one of the TTIs.
  • the relative time relationship between the existing DRS and the eDRS is flexible, and can be flexibly changed according to the time point of the success of the mechanism and the time rule of the eDRS available time period.
  • the relative time relationship between the existing DRS and the eDRS can be defined. As shown in Fig. 11 (a), Fig. 11 (b), Fig. 11 (c), and Fig. 11 (d), the relative time relationship between the existing DRS and the eDRS changes depending on the time point at which the LBT succeeds.
  • the eNB After the LBT succeeds, the eNB starts downlink transmission from TTI#1. Since the existing DRS can only be sent in TTI#0/5, the eDRS is advanced to TTI#1-#4 for transmission.
  • the eNB starts downlink transmission from TTI#2. Then, the second part of the eDRS is placed on the TTI#2-#4, and then the existing DRS is transmitted, and then the first part of the eDRS is transmitted.
  • the eNB starts downlink transmission from TTI#3. Then, the third part of the eDRS is placed on the TTI#3-#4, and then the existing DRS is transmitted, and then the first part and the second part of the eDRS are transmitted.
  • the eNB starts downlink transmission from TTI#4. Then, the fourth part of the eDRS is placed on the TTI #4 for transmission, then the existing DRS is transmitted, and then the first part - the third part of the eDRS is transmitted.
  • the method includes:
  • the terminal performs blind detection on the received eDRS to decode the eDRS.
  • the coverage enhancement user receives the existing DRS in the DMTC (Discovery Signals Measurement Timing Configuration) window.
  • the base station can transmit the eDRS within the DMTC or send the eDRS outside the DMTC. It should be noted that when the base station sends the eDRS outside the DMTC, the coverage enhanced user does not need to merge the existing DRS within the DMTC, and can decode only based on the eDRS other than the DMTC.
  • An embodiment of the present application provides an apparatus for enhancing a sounding reference signal mapping, which is applicable to a base station operating in an unlicensed frequency band, and is applicable to the foregoing method flow.
  • the apparatus includes:
  • a determining unit 21 configured to determine, according to the cell coverage enhancement capability, information for time-frequency resources for carrying an enhanced sounding reference signal (eDRS), where the enhanced signal includes an enhanced synchronization signal, an enhanced reference signal, And one or more of an enhanced physical broadcast channel and an enhanced data channel, the information of the time-frequency resource including one or more of an occupied resource size, a frequency domain location, and a time domain location of the eDRS.
  • eDRS enhanced sounding reference signal
  • the mapping unit 22 is configured to map the eDRS according to the information of the time-frequency resource.
  • the sending unit 23 is configured to send the time-frequency resource with the eDRS mapped to the terminal.
  • the size of the occupied resource depends on a level of the cell coverage enhancement capability.
  • the size of the occupied resource is used to indicate that the enhanced synchronization signal occupies a time-frequency.
  • the resource is m times the time-frequency resource occupied by the existing synchronization signal, and the value of m is the first specified value.
  • the frequency domain location is used to indicate that the enhanced synchronization signal is located in a system bandwidth.
  • the center has 6 physical resource blocks on the top.
  • the frequency domain location is used to indicate that the enhanced synchronization signal is located in a system bandwidth.
  • Non-central 6 physical resource blocks are paired.
  • the time domain location is used to indicate that the enhanced synchronization signal occupies any positive The frequency division multiplexing symbol.
  • the time domain location is used to indicate that the enhanced synchronization signal occupies a first designation Orthogonal frequency division multiplexing symbols.
  • the first designated orthogonal frequency division multiplexing symbol indicates a symbol that does not include a cell reference signal or a symbol that does not include a physical downlink control channel or a symbol that does not include a cell reference signal and a physical downlink control channel;
  • the cell reference signal includes at least an existing cell reference signal; and the physical downlink control channel includes at least an existing physical downlink control channel.
  • the occupied resource size is used to indicate that the enhanced physical broadcast channel is occupied.
  • the frequency resource is n times the time-frequency resource occupied by the existing physical broadcast channel, and the value of n is the second specified value.
  • the frequency domain location is used to indicate that the enhanced physical broadcast channel is located.
  • the center of the system bandwidth is on the top of six physical resource blocks.
  • the frequency domain location is used to indicate that the enhanced physical broadcast channel is located in the system.
  • the non-central 6 physical resource blocks of the bandwidth are paired.
  • the time domain location is used to indicate that the enhanced physical broadcast channel occupies any An orthogonal frequency division multiplexing symbol.
  • the time domain location is used by the enhanced physical broadcast channel to occupy a second The specified orthogonal frequency division multiplexing symbol.
  • the second specified orthogonal frequency division multiplexing symbol represents a symbol that does not include a cell reference signal; and the cell reference signal includes at least an existing cell reference signal.
  • the eDRS when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the eDRS, if the enhanced synchronization signal and the enhanced The physical broadcast channels are all transmitted on a central 6 physical resource block pair of the system bandwidth, and the enhanced synchronization signal transmission priority is higher than the enhanced physical broadcast channel transmission priority.
  • the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel
  • the information of the time-frequency resource includes a frequency domain location of the time-frequency resource
  • the enhanced synchronization signal is The enhanced physical broadcast channel is transmitted on a central 6 physical resource block pair or a non-central 6 physical resource block pair of the system bandwidth, the enhanced synchronization signal transmission priority and the enhanced physical broadcast channel transmission priority the same.
  • the information of the time-frequency resource includes a time domain location of the time-frequency resource
  • a relative time relationship between the eDRS and an existing sounding reference signal (DRS) is fixed.
  • a relative time relationship between the eDRS and the DRS is flexibly changed according to a time criterion.
  • the time criterion includes a time point when the mechanism is said to be successful, and the eDRS available time period.
  • An embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, and for a communication system operating in an unlicensed frequency band, introducing more time-frequency resources according to information of a time-frequency resource for carrying an enhanced sounding reference signal.
  • the enhanced sounding reference signal is carried by the base station and the terminal to complete the transmission of the eDRS, and the repeated transmission of the sounding reference signal at the time and frequency is realized, the energy of the sounding reference signal is improved, and the coverage enhancement of the sounding reference signal is realized.
  • An embodiment of the present application provides an apparatus for enhancing a sounding reference signal mapping, which is applicable to a terminal operating in an unlicensed frequency band, and is applicable to the foregoing method flow.
  • the apparatus includes:
  • the receiving unit 31 is configured to receive the eDRS sent by the base station according to the information of the time-frequency resource.
  • the device further includes:
  • the blind detection unit 32 is configured to perform blind detection on the received eDRS to decode the eDRS.
  • An embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, and for a communication system operating in an unlicensed frequency band, introducing more time-frequency resources according to information of a time-frequency resource for carrying an enhanced sounding reference signal.
  • the enhanced sounding reference signal is carried by the base station and the terminal to complete the transmission of the eDRS, and the repeated transmission of the sounding reference signal at the time and frequency is realized, the energy of the sounding reference signal is improved, and the coverage enhancement of the sounding reference signal is realized.
  • An embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, which is applicable to a base station operating in an unlicensed frequency band.
  • the apparatus includes a processor 41, a memory 42, and a transceiver 43.
  • the processor 41, the memory 42 and the transceiver 43 communicate via a bus; the memory 42 is configured with computer code, and the processor 41 can call the code to control the transceiver 43.
  • the processor 41 is configured to determine, by using the transceiver 43, information about a time-frequency resource for carrying an enhanced sounding reference signal (eDRS), where the eDRS includes an enhancement, according to a cell coverage enhancement capability.
  • eDRS enhanced sounding reference signal
  • the processor 41 is configured to map the eDRS by using the information of the time-frequency resource by using the transceiver 43.
  • the processor 41 is configured to send the time-frequency resource mapped with the eDRS to the terminal by using the transceiver 43.
  • the size of the occupied resource depends on a level of the cell coverage enhancement capability.
  • the size of the occupied resource is used to indicate that the enhanced synchronization signal occupies a time-frequency.
  • the resource is m times the time-frequency resource occupied by the existing synchronization signal, and the value of m is the first specified value.
  • the frequency domain location is used to indicate that the enhanced synchronization signal is located in a system bandwidth.
  • the center has 6 physical resource blocks on the top.
  • the frequency domain location is used to indicate that the enhanced synchronization signal is located in a system bandwidth.
  • Non-central 6 physical resource blocks are paired.
  • the time domain location is used to indicate that the enhanced synchronization signal occupies any positive The frequency division multiplexing symbol.
  • the time domain location is used to indicate that the enhanced synchronization signal occupies a first designation Orthogonal frequency division multiplexing symbols.
  • the first designated orthogonal frequency division multiplexing symbol indicates a symbol that does not include a cell reference signal or a symbol that does not include a physical downlink control channel or a symbol that does not include a cell reference signal and a physical downlink control channel;
  • the cell reference signal includes at least an existing cell reference signal; and the physical downlink control channel includes at least an existing physical downlink control channel.
  • the occupied resource size is used to indicate that the enhanced physical broadcast channel is occupied.
  • the frequency resource is n times the time-frequency resource occupied by the existing physical broadcast channel, and the value of n is the second specified value.
  • the frequency domain location is used to indicate that the enhanced physical broadcast channel is located.
  • the center of the system bandwidth is on the top of six physical resource blocks.
  • the frequency domain location is used to indicate that the enhanced physical broadcast channel is located in the system.
  • the non-central 6 physical resource blocks of the bandwidth are paired.
  • the time domain location is used to indicate that the enhanced physical broadcast channel occupies any An orthogonal frequency division multiplexing symbol.
  • the time domain location is used by the enhanced physical broadcast channel to occupy a second The specified orthogonal frequency division multiplexing symbol.
  • the second specified orthogonal frequency division multiplexing symbol represents a symbol that does not include a cell reference signal; and the cell reference signal includes at least an existing cell reference signal.
  • the eDRS when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the eDRS, if the enhanced synchronization signal and the enhanced The physical broadcast channels are all transmitted on a central 6 physical resource block pair of the system bandwidth, and the enhanced synchronization signal transmission priority is higher than the enhanced physical broadcast channel transmission priority.
  • the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel
  • the information of the time-frequency resource includes a frequency domain location of the time-frequency resource
  • the enhanced synchronization signal is The enhanced physical broadcast channel is transmitted on a central 6 physical resource block pair or a non-central 6 physical resource block pair of the system bandwidth, the enhanced synchronization signal transmission priority and the enhanced physical broadcast channel transmission priority the same.
  • the information of the time-frequency resource includes a time domain location of the time-frequency resource
  • a relative time relationship between the eDRS and an existing sounding reference signal (DRS) is fixed.
  • a relative time relationship between the eDRS and the DRS is flexibly changed according to a time criterion.
  • the time criterion includes a time point when the mechanism is said to be successful, and the eDRS available time period.
  • An embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, and for a communication system operating in an unlicensed frequency band, introducing more time-frequency resources according to information of a time-frequency resource for carrying an enhanced sounding reference signal.
  • the enhanced sounding reference signal is carried by the base station and the terminal to complete the transmission of the eDRS, and the repeated transmission of the sounding reference signal at the time and frequency is realized, the energy of the sounding reference signal is improved, and the coverage enhancement of the sounding reference signal is realized.
  • An embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, which is applicable to a terminal operating in an unlicensed frequency band.
  • the apparatus includes a processor 51, a memory 52, and a transceiver 53.
  • the processor 51, the memory 52 and the transceiver 53 communicate via a bus; the memory 52 is configured with computer code, and the processor 51 can call the code to control the transceiver 53.
  • the processor 51 is configured to receive, by using the information about the time-frequency resource, the eDRS sent by the base station by using the transceiver 53.
  • the processor 51 is further configured to perform blind detection on the received eDRS by using the transceiver 53 to decode the eDRS.
  • An embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, and for a communication system operating in an unlicensed frequency band, introducing more time-frequency resources according to information of a time-frequency resource for carrying an enhanced sounding reference signal.
  • the enhanced sounding reference signal is carried by the base station and the terminal to complete the transmission of the eDRS, and the repeated transmission of the sounding reference signal at the time and frequency is realized, the energy of the sounding reference signal is improved, and the coverage enhancement of the sounding reference signal is realized.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present application. Part of the steps.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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Abstract

La présente invention se rapporte au domaine des communications et concerne, selon un mode de réalisation, un procédé et un dispositif de mappage de signal de référence de découverte améliorée, permettant une couverture améliorée d'un signal de référence de découverte. Le procédé comprend les étapes suivantes : une station de base détermine, selon une capacité de couverture de cellule améliorée, des informations relatives à une ressource temps-fréquence pour transporter un eDRS, l'eDRS comprenant un signal de synchronisation amélioré, un signal de référence amélioré, un canal de diffusion physique amélioré et/ou un canal de données amélioré, et les informations relatives à la ressource temps-fréquence comprenant un ou plusieurs éléments parmi une quantité d'occupation de ressource, une position dans le domaine fréquentiel, et une position dans le domaine temporel de l'eDRS; la station de base mappe, en fonction des informations relatives à la ressource temps-fréquence, l'eDRS; la station de base envoie à un terminal la ressource temps-fréquence mappée avec l'eDRS; et le terminal reçoit, en fonction des informations relatives à la ressource temps-fréquence, un eDRS envoyé par la station de base. La solution selon le mode de réalisation de la présente invention est applicable dans le processus de transmission d'eDRS.
PCT/CN2018/082814 2017-04-19 2018-04-12 Procédé et dispositif de mise en correspondance de signaux de référence de découverte améliorée Ceased WO2018192409A1 (fr)

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US11012922B2 (en) * 2017-09-18 2021-05-18 Qualcomm Incorporated Common search space design for coverage enhancement in wireless communications
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