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WO2014113961A1 - Procédé de transmission de signal de référence, station de base et équipement d'utilisateur - Google Patents

Procédé de transmission de signal de référence, station de base et équipement d'utilisateur Download PDF

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Publication number
WO2014113961A1
WO2014113961A1 PCT/CN2013/070957 CN2013070957W WO2014113961A1 WO 2014113961 A1 WO2014113961 A1 WO 2014113961A1 CN 2013070957 W CN2013070957 W CN 2013070957W WO 2014113961 A1 WO2014113961 A1 WO 2014113961A1
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WO
WIPO (PCT)
Prior art keywords
reference signal
time
frequency tracking
tracking reference
dmrs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2013/070957
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English (en)
Chinese (zh)
Inventor
杨建兵
任晓涛
吴海
程型清
吴作敏
治欣慰
孙静原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2013/070957 priority Critical patent/WO2014113961A1/fr
Priority to CN201380002653.7A priority patent/CN104160766B/zh
Publication of WO2014113961A1 publication Critical patent/WO2014113961A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H04L5/0058—Allocation criteria
    • H04L5/0073—Allocation arrangements that take into account other cell interferences
    • 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
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H04L5/0087—Timing of allocation when data requirements change
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated

Definitions

  • Embodiments of the present invention relate to the field of communications, and more particularly, to a method, base station, and user equipment for transmitting reference signals. Background technique
  • the Long Term Evolution Advanced (LTE-A) system adopts Coordinated Multiple Point (CoMP) technology.
  • CoMP Coordinated Multiple Point
  • the serving base station first configures multiple physical downlink shared channel resource element mapping and Quasi-Co-Location ("PQ") parameters for the user equipment.
  • the set of PQ parameters may include a cell-specific reference signal (Cell-specific Reference Signal) and a channel state information reference signal (CSI-RS). Resource configuration parameters.
  • Cell-specific Reference Signal Cell-specific Reference Signal
  • CSI-RS channel state information reference signal
  • DCI Downlink Control Information
  • the user equipment can then demodulate the data on the REs and receive CRS and CSI-RS according to the indication to estimate the corresponding timing offset and frequency offset, and perform time-frequency domain correction on the received data.
  • NCT New Carrier Type
  • DMRS Demodulation Reference Signal
  • CSI-RS CSI-RS
  • the user equipment has no way to know the time-frequency resource configuration information of the time-frequency tracking reference signal transmitted on the NCT carrier of the currently serving transmission point, for example, Time-frequency tracking reference signal week Period, subframe offset, time-frequency tracking, number of RBs occupied by the reference signal, location of the RBs in the frequency domain, and position and number of occupied REs of the time-frequency tracking reference signal within one RB, etc., the user equipment cannot Perform rate matching and correctly demodulate downlink data, affecting the normal demodulation and user experience of the data.
  • the time-frequency resource configuration information of the time-frequency tracking reference signal transmitted on the NCT carrier of the currently serving transmission point for example, Time-frequency tracking reference signal week Period, subframe offset, time-frequency tracking, number of RBs occupied by the reference signal, location of the RBs in the frequency domain, and position and number of occupied REs of the time-frequency tracking reference signal within one RB, etc.
  • FelCIC Coordination, called “FelCIC” is also an effective method to improve the cell throughput rate in heterogeneous networks (Hetnet).
  • the base station will notify the user equipment of the CRS configuration of the interfering cell, including the physical cell identity, antenna port and CRS of the CRS.
  • the configuration parameters of the unicast single overcast network (“MBSFN") are used by the user equipment to obtain the CRS information of the interfering cell by using the information. Interference Cancelling can be performed.
  • MBSFN unicast single overcast network
  • Interference Cancelling can be performed.
  • the signal of the interfering cell at the CRS position is calculated and removed from the received signal to improve the demodulation performance of the UE.
  • the time of the interfering cell cannot be Frequency tracking pilots use IC receiver algorithms for interference cancellation, affecting system performance and user experience.
  • Embodiments of the present invention provide a method, a base station, and a user equipment for transmitting a reference signal, which enable a user equipment to correctly perform rate matching and/or interference cancellation in various systems employing an NCT carrier.
  • an embodiment of the present invention provides a method for transmitting a reference signal, including: determining at least one resource configuration parameter of a user equipment UE, where the at least one resource configuration parameter includes a resource configuration of a time-frequency tracking reference signal a parameter, the time-frequency tracking reference signal is carried on a carrier of a new carrier type; and the at least one set of resource configuration parameters is sent to the UE.
  • the resource configuration parameter of the time-frequency tracking reference signal includes at least one of the following parameters: a period of the time-frequency tracking reference signal, the time-frequency tracking reference signal a subframe offset value, a number of resource blocks RB occupied by the time-frequency tracking reference signal, a position of the RB occupied by the time-frequency tracking reference signal, and a number of resource units RE occupied by the time-frequency tracking reference signal in the RB And the number of antenna ports of the time-frequency tracking reference signal, the sequence initialization parameter of the time-frequency tracking reference signal, and the pattern of the RE occupied by the time-frequency tracking reference signal Quote.
  • the sequence initialization parameter of the time-frequency tracking reference signal is a UE-specific sequence initialization parameter.
  • the at least one set of resource configuration parameters further includes a demodulation reference signal
  • the resource configuration parameter of the DMRS includes at least one of the following parameters: a parameter used to indicate a period of the DMRS, a parameter indicating a subframe offset value of the DMRS, a number of resource block RBs occupied by the DMRS, a location of an RB occupied by the DMRS, a number of resource units RE occupied by the DMRS in the RB, and a sequence initialization of the DMRS The parameter and the pattern index of the RE occupied by the DMRS.
  • the sequence initialization parameter of the DMRS is a UE-specific sequence initialization parameter.
  • the method further includes: sending, to the UE The first indication information is used to indicate that the UE performs rate matching by using the first resource configuration parameter in the at least one resource configuration parameter.
  • the method further includes: sending, to the UE The second indication information is used to indicate that the UE directly performs time-frequency tracking using the currently received time-frequency tracking reference signal until the next time-frequency tracking reference signal is received.
  • the embodiment of the present invention provides a method for transmitting a reference signal, including: receiving at least one set of resource configuration parameters sent by a base station, where the at least one set of resource configuration parameters includes resource configuration parameters of a time-frequency tracking reference signal And the time-frequency tracking reference signal is carried on the carrier of the new carrier type; and determining the resource configuration of the time-frequency tracking reference signal according to the at least one set of resource configuration parameters.
  • the resource configuration parameter of the time-frequency tracking reference signal includes at least one of the following parameters: a period of the time-frequency tracking reference signal, the time-frequency tracking reference signal a subframe offset value, a number of resource blocks RB occupied by the time-frequency tracking reference signal, a position of the RB occupied by the time-frequency tracking reference signal, and the time-frequency tracking reference signal in the RB
  • the sequence initialization parameter of the time-frequency tracking reference signal is a user equipment UE-specific sequence initialization parameter.
  • the at least one set of resource configuration parameters further includes a resource configuration parameter of the demodulation reference signal DMRS .
  • the resource configuration parameter of the DMRS includes at least one of the following parameters: a parameter used to indicate a period of the DMRS, a parameter indicating a subframe offset value of the DMRS, a number of resource block RBs occupied by the DMRS, a location of an RB occupied by the DMRS, a number of resource units RE occupied by the DMRS in the RB, and an antenna port of the DMRS The number, the sequence initialization parameter of the DMRS, and the pattern index of the RE occupied by the DMRS.
  • the sequence initialization parameter of the DMRS is a UE-specific sequence initialization parameter.
  • the method further includes: receiving, sending, sending, by the base station
  • the first indication information is used to indicate that the user equipment UE performs rate matching by using the first resource configuration parameter in the at least one resource configuration parameter; according to the first indication information and the at least one resource configuration parameter. , rate matching.
  • the method further includes: receiving, sending, sending, by the base station Second indication information, the second indication information is used to indicate that the user equipment UE directly performs time-frequency tracking using the currently received time-frequency tracking reference signal until the next time-frequency tracking reference signal is received; according to the second Instructions, time-frequency tracking.
  • an embodiment of the present invention provides a base station, including: a determining module, configured to determine at least one resource configuration parameter of a user equipment UE, where the at least one resource configuration parameter includes a resource configuration parameter of a time-frequency tracking reference signal
  • the time-frequency tracking reference signal is carried on the carrier of the new carrier type
  • the sending module is configured to send, to the UE, the at least one resource configuration determined by the determining module. Parameters.
  • the resource configuration parameter of the time-frequency tracking reference signal determined by the determining module includes at least one of the following parameters: a period of the time-frequency tracking reference signal, at that time a subframe offset value of the frequency tracking reference signal, a number of resource blocks RB occupied by the time-frequency tracking reference signal, a position of the RB occupied by the time-frequency tracking reference signal, and a resource occupied by the time-frequency tracking reference signal in the RB
  • the sequence initialization parameter of the time-frequency tracking reference signal determined by the determining module is a UE-specific sequence initialization parameter.
  • the at least one set of resource configuration parameters determined by the determining module further includes a demodulation reference signal Resource configuration parameters of the DMRS.
  • the resource configuration parameter of the DMRS determined by the determining module includes at least one of the following parameters: a period for indicating the DMRS a parameter, a parameter for indicating a subframe offset value of the DMRS, a number of resource block RBs occupied by the DMRS, a location of an RB occupied by the DMRS, and a number of resource units RE occupied by the DMRS in the RB, The sequence initialization parameter of the DMRS and the pattern index of the RE occupied by the DMRS.
  • the sequence initialization parameter of the DMRS determined by the determining module is a UE-specific sequence initialization parameter.
  • the sending module is further configured to use the UE Sending the first indication information, where the first indication information is used to indicate that the UE performs rate matching by using the first resource configuration parameter in the at least one set of resource configuration parameters.
  • the sending module is further used to the UE Sending the second indication information, the second indication information is used to instruct the UE to perform time-frequency tracking using the currently received time-frequency tracking reference signal until the next time-frequency tracking reference signal is received.
  • an embodiment of the present invention provides a user equipment (UE), including: a receiving module, configured to receive at least one set of resource configuration parameters sent by a base station, where the at least one set of resource configuration parameters includes resource configuration of a time-frequency tracking reference signal a parameter, the time-frequency tracking reference signal is carried on a carrier of a new carrier type, and a determining module is configured to determine a resource configuration of the time-frequency tracking reference signal according to the at least one set of resource configuration parameters received by the receiving module.
  • UE user equipment
  • the resource configuration parameter of the time-frequency tracking reference signal received by the receiving module includes at least one of the following parameters: the time-frequency tracking reference signal period, the time a subframe offset value of the frequency tracking reference signal, a number of resource blocks RB occupied by the time-frequency tracking reference signal, a position of the RB occupied by the time-frequency tracking reference signal, and a resource occupied by the time-frequency tracking reference signal in the RB
  • the number of units RE, the number of antenna ports of the time-frequency tracking reference signal, the sequence initialization parameter of the time-frequency tracking reference signal, and the pattern index of the RE occupied by the time-frequency tracking reference signal includes at least one of the following parameters: the time-frequency tracking reference signal period, the time a subframe offset value of the frequency tracking reference signal, a number of resource blocks RB occupied by the time-frequency tracking reference signal, a position of the RB occupied by the time-frequency tracking reference signal, and a resource occupied by the time-frequency tracking reference signal in the RB
  • the sequence initialization parameter of the time-frequency tracking reference signal received by the receiving module is a sequence initialization parameter dedicated to the UE.
  • the at least one set of resource configuration parameters received by the receiving module further includes a demodulation reference signal Resource configuration parameters of the DMRS.
  • the resource configuration parameter of the DMRS received by the receiving module includes at least one of the following parameters: a period for indicating the DMRS a parameter, a parameter for indicating a subframe offset value of the DMRS, a number of resource block RBs occupied by the DMRS, a location of an RB occupied by the DMRS, and a number of resource units RE occupied by the DMRS in the RB, The number of antenna ports of the DMRS, the sequence initialization parameters of the DMRS, and the pattern index of the RE occupied by the DMRS.
  • the sequence initialization parameter of the DMRS received by the receiving module is a sequence initialization parameter specific to the UE.
  • the receiving module is further configured to receive the base station a first indication information, where the first indication information is used to indicate that the UE uses the first resource configuration parameter of the at least one resource configuration parameter for rate matching; the UE further includes: And a rate matching module, configured to perform rate matching according to the first indication information received by the receiving module and the at least one set of resource configuration parameters.
  • the receiving module is further configured to receive the base station Sending the second indication information, the second indication information is used to indicate that the user equipment UE directly uses the currently received time-frequency tracking reference signal for time-frequency tracking until the next time-frequency tracking reference signal is received;
  • the method includes: a time-frequency tracking module, configured to perform time-frequency tracking according to the second indication information received by the receiving module.
  • the method, the base station, and the user equipment for transmitting the reference signal provided by the embodiment of the present invention notify the user equipment by using the resource configuration parameter of the time-frequency tracking reference signal carried on the NCT carrier, so that the user equipment can adopt Rate matching and/or interference cancellation are performed correctly in various systems of the NCT carrier, so that communication between the base station and the user equipment can be performed normally, and the user experience is improved.
  • 1 is a schematic flow chart of a method for transmitting a reference signal according to an embodiment of the present invention.
  • 2 is another schematic flow diagram of a method for transmitting a reference signal in accordance with an embodiment of the present invention.
  • FIG. 3 is still another schematic flow diagram of a method for transmitting a reference signal in accordance with an embodiment of the present invention.
  • FIG. 4 is a schematic flow diagram of a method for transmitting a reference signal in accordance with another embodiment of the present invention.
  • FIG. 5 is another schematic flowchart of a method for transmitting a reference signal according to another embodiment of the present invention.
  • FIG. 6 is still another schematic flowchart of a method for transmitting a reference signal according to another embodiment of the present invention.
  • FIG. 7 is a schematic block diagram of a base station according to an embodiment of the present invention.
  • FIG. 8 is a schematic block diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 9 is another schematic block diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 10 is still another schematic block diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 11 is a schematic block diagram of a base station according to another embodiment of the present invention.
  • FIG. 12 is a schematic block diagram of a user equipment according to another embodiment of the present invention. detailed description
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • General Packet Radio Service General Packet Radio Service
  • LTE Long Term Evolution
  • LTE frequency division duplex Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • Wi-Fi Worldwide Interoperability for Microwave Access
  • a user equipment may be referred to as a terminal (Terminal), a mobile station (Mobile Station, referred to as “MS”), a mobile terminal ( Mobile Terminal), etc.
  • the user equipment can communicate with one or more core networks via a Radio Access Network (“RAN"), for example, the user equipment can be a mobile phone (or “cellular”"Telephone", a computer with a mobile terminal, etc., for example, the user device can also be portable, pocket-sized, handheld, computer-built or in-vehicle mobile Devices that exchange voice and/or data with a wireless access network.
  • RAN Radio Access Network
  • the base station may be a base station (Base Transceiver Station, called “BTS”) in GSM or CDMA, or a base station (NodeB) in WCDMA, or may be in LTE.
  • BTS Base Transceiver Station
  • NodeB base station
  • the evolved base station evolved Node B, referred to as "eNB” or “e-NodeB” is not limited in the present invention.
  • the technical solution of the embodiment of the present invention can be applied to various systems using carriers of a new carrier type NCT, where the NCT carrier does not carry CRS, and the NCT carrier can be configured as standalone and non-independent carriers, if configured For a non-independent carrier, the NCT carrier may not have a part of the control channel in the normal carrier, such as a Physical Downlink Channel (referred to as a "PDCCH").
  • a PDCCH Physical Downlink Channel
  • FIG. 1 shows a schematic flow chart of a method 100 for transmitting a reference signal, which may be performed by a serving base station in at least one serving base station of a user equipment UE, for ease of description, in accordance with an embodiment of the present invention.
  • the executor of the method 100 is referred to as a first serving base station.
  • the method 100 includes:
  • S110 Determine at least one resource configuration parameter of the user equipment UE, where the at least one resource configuration parameter includes a resource configuration parameter of a time-frequency tracking reference signal, where the time-frequency tracking reference signal is carried on a carrier of a new carrier type;
  • the method for transmitting a reference signal in the embodiment of the present invention notifies the user equipment of the resource configuration parameter of the time-frequency tracking reference signal carried on the NCT carrier, so that the user equipment can be correctly in various systems adopting the NCT carrier. Rate matching and/or interference cancellation are performed to enable normal communication between the base station and the user equipment, thereby improving the user experience.
  • the first serving base station configures at least one set of resource configuration parameters for the UE, where the set of the at least one set of resource configuration parameters may be equal to the number of at least one serving base station of the UE, and correspondingly, each of the user equipments
  • the serving base station may correspond to a set of resource configuration parameters.
  • the set of at least one set of resource configuration parameters may also be smaller than the number of at least one serving base station of the UE, and correspondingly, two or more of the at least one serving base station.
  • the serving base station can share a set of resource configuration parameters, but the embodiment of the present invention is not limited thereto.
  • the at least one set of resource configuration parameters may include resource configuration parameters when the at least one serving base station of the UE sends the time-frequency tracking reference signal, where the time-frequency tracking reference signal is a reference for time-frequency tracking carried on the NCT carrier.
  • the time-frequency tracking reference signal is different from the old protocol
  • the time-frequency tracking reference signal cannot be demodulated
  • the time-frequency resource occupied by the time-frequency tracking reference signal is lower than The time-frequency resource occupied by the CRS carried on the normal carrier in the old protocol version.
  • the reference signal for time-frequency tracking carried on the NCT carrier is referred to as a time-frequency tracking reference signal, and the time-frequency tracking reference signal may have other names, and the time-frequency tracking reference signal should be It is determined by its intrinsic logic function that its name cannot be construed as limiting the embodiments of the present invention.
  • each set of resource configuration parameters of the at least one set of resource configuration parameters may include a resource configuration parameter of a time-frequency tracking reference signal, or one or more sets of resource configuration parameters of the at least one set of resource configuration parameters may include The time-frequency tracking resource configuration parameters of the reference signal, but the embodiment of the present invention is not limited thereto.
  • the resource configuration parameter of the time-frequency tracking reference signal may include at least one of the following parameters: a period of the time-frequency tracking reference signal, a subframe offset value of the time-frequency tracking reference signal, and the time-frequency tracking
  • the number of resource blocks RB occupied by the reference signal, the position of the RB occupied by the time-frequency tracking reference signal, the number of resource units RE occupied by the time-frequency tracking reference signal in the RB, and the antenna port of the time-frequency tracking reference signal The number, the sequence initialization parameter of the time-frequency tracking reference signal, the pattern index of the RE occupied by the time-frequency tracking reference signal, and the type of carrier carrying the time-frequency tracking reference signal.
  • the period of the time-frequency tracking reference signal and the subframe offset value may represent the subframe information occupied by the time-frequency tracking reference signal.
  • the subframe information occupied by the time-frequency tracking reference signal may also be used in other manners.
  • the subframe information occupied by the time-frequency tracking reference signal may be represented by a bitmap, for example, 1 and 0 respectively represent a time-frequency tracking reference signal and a subframe on a subframe. There is no time-frequency tracking reference signal.
  • the number of bits may be 5, 10, 20 or 40, etc., but embodiments of the invention are not limited thereto.
  • the one or more serving base station side and the UE side of the at least one serving base station of the UE may preset a partial resource configuration parameter of the time-frequency tracking reference signal, for example, the time-frequency tracking reference signal may be preset. a plurality of RBs in the middle of the system bandwidth, or a preset period of the time-frequency tracking reference signal or a number of occupied RBs, etc., correspondingly, the resource configuration parameter of the time-frequency tracking reference signal may not include the foregoing preset resources. Configuration parameters.
  • one or more serving base stations and the UE side of the at least one serving base station of the UE may further preset at least one pattern of REs occupied by the time-frequency tracking reference signal in one RB, and the time-frequency tracking reference
  • the resource resource configuration parameter of the signal may include a pattern index, so that the UE may according to the pattern The index and the preset pattern determine the RE occupied by the time-frequency tracking reference signal in one RB.
  • the resource configuration parameter of the time-frequency tracking reference signal may also include only one bandwidth configuration parameter, to default to the multiple All ports in the antenna port use the same configuration parameters.
  • the bandwidth configuration may implicitly indicate several typical values, such as 3, 6, 10, 15, 25, 50, or 100, etc. through several bits, but the embodiment of the present invention is not limited thereto.
  • the sequence initialization parameter of the time-frequency tracking reference signal may be a cell physical identifier.
  • the macro base station and the multiple micro base stations of the UE can dynamically and flexibly according to actual conditions.
  • the channel state is that the UE transmits the time-frequency tracking reference signal, and enables the UE to flexibly synchronize with each base station according to the actual situation.
  • the sequence initialization parameter of the time-frequency tracking reference signal may not be a cell-level parameter, but a user. Device-specific values, that is, each UE can correspond to different sequence initialization parameters.
  • the sequence initialization parameter of the time-frequency tracking reference signal is a UE-specific sequence initialization parameter. That is, the sequence initialization parameter of the time-frequency tracking reference signal sent by the base station to the UE is the sequence initialization parameter dedicated to the UE.
  • the resource configuration parameters of the CRS may be included.
  • the resource configuration parameter of the CRS may include a physical cell identifier and a port number of the CRS.
  • the resource configuration parameter of the CRS may further include configuration information of the MBSFN and a zero power channel state information reference signal (Zero Power Channel State).
  • Non-ZP CSI-RS configuration information of the non-zero power channel state information reference signal
  • NZP CSI-RS Non-Zero Power Channel State Information Reference Signal
  • PDSCH physical downlink shared channel
  • the at least one serving base station of the user equipment uses a pilot overhead reduction scheme, that is, the time-frequency resource occupied by the DMRS is reduced, the at least one resource is used.
  • the configuration parameter may further include a resource configuration parameter of the DMRS; correspondingly, the at least one resource configuration parameter further includes a resource configuration parameter of the demodulation reference signal DMRS.
  • the resource configuration parameter of the DMRS may include at least one of the following parameters: a period of the DMRS, a subframe offset value of the DMRS, and a resource block RB occupied by the DMRS.
  • the period of the DMRS and the subframe offset value may represent the subframe information occupied by the DMRS.
  • the subframe information occupied by the DMRS may also be represented by other methods, for example, by using a bitmap.
  • the mode indicates the subframe information occupied by the DMRS. For example, 1 and 0 respectively indicate that there is a DMRS in one subframe and no DMRS in one subframe, but the embodiment of the present invention is not limited thereto.
  • one or more serving base station sides and a UE side of the at least one serving base station of the UE may preset a partial resource configuration parameter of the DMRS.
  • the DMRS may be preset to occupy a few RBs in the middle of the system bandwidth.
  • the period of the DMRS or the number of occupied RBs is set in advance, and so on, correspondingly, the resource configuration parameter of the DMRS may not include the foregoing preset resource configuration parameter.
  • the one or more serving base stations and the UE side of the at least one serving base station of the UE may further preset at least one pattern of the REs occupied by the DMRS in one RB, and the resource resource configuration parameters of the DMRS may include
  • the pattern index is such that the UE can determine the RE occupied by the DMRS in one RB according to the pattern index and the preset pattern, but the embodiment of the present invention is not limited thereto.
  • the sequence initialization parameter of the DMRS is a UE-specific sequence initialization parameter.
  • the UE-specific sequence initialization identifier may not be a cell physical identifier, and different UEs generally correspond to different sequence initialization identifiers.
  • the sequence initialization parameter of the time-frequency tracking reference signal may also be a cell physical identifier, but the present invention The embodiment is not limited to this.
  • the at least one resource configuration parameter may further include a resource configuration parameter of the device discovery signal.
  • the resource configuration parameter of the device discovery signal may include a subframe and/or a frequency band parameter occupied by the device discovery signal, but the embodiment of the present invention is not limited thereto.
  • the first serving base station needs to perform actual scheduling on the UE
  • the UE uses the set of resource configuration parameters of the at least one set of resource configuration parameters to perform rate matching.
  • the method 100 further includes:
  • the first indication information is sent to the UE, where the first indication information is used to indicate that the UE performs rate matching by using the first resource configuration parameter in the at least one resource configuration parameter.
  • the first serving base station may be scrambled by a DCI, a Radio Network Temporary Identifier ("Radio Network Temporary Identifier”), and a Master Information Block (“MIB”). Scrambling on the CP or pre-defining a dedicated cyclic prefix (Cyclic Prefix, called "CP") on the CP or sending the first to the UE by means of a system information block (“SIB”)
  • SIB system information block
  • An indication information is not limited thereto.
  • the first serving base station may further indicate, in the subframe where the UE does not have the time-frequency tracking reference signal, how to estimate the time-frequency offset and correct the data offset of the current subframe, optionally, as another embodiment.
  • the method 100 further includes:
  • the second indication information is sent to the UE, where the second indication information is used to indicate that the UE uses the currently received time-frequency tracking reference signal for time-frequency tracking until the next time-frequency tracking reference signal is received.
  • the UE may use the latest received time-frequency tracking reference signal for rate matching on the subframe without the time-frequency tracking reference signal according to the second indication information, to correct the data offset of the current subframe until the next one is received.
  • the time-frequency tracking of the reference signal; optionally, the second indication information may further indicate that the UE directly uses the currently received DMRS until the DMRS is received again, and accordingly, the UE may be in a subframe without the DMRS.
  • the second indication information may also indicate that the user equipment tracks the reference signal and/or the DMRS without time-frequency.
  • the reference frequency and/or the DMRS are tracked using the time-frequency on the subframe closest to the subframe, but the embodiment of the present invention is not limited thereto.
  • the method for transmitting a reference signal in the embodiment of the present invention notifies the user equipment of the resource configuration parameter of the time-frequency tracking reference signal carried on the NCT carrier, so that the user equipment can be correctly in various systems adopting the NCT carrier. Rate matching and/or interference cancellation are performed to enable normal communication between the base station and the user equipment, thereby improving the user experience.
  • FIG. 4 shows a schematic flowchart of a method 200 for transmitting a reference signal according to another embodiment of the present invention.
  • the method 200 may be performed by a user equipment UE.
  • the method 200 includes: S210, receiving, by the base station, at least one set of resource configuration parameters, where the at least one set of resource configuration parameters includes a resource configuration parameter of a time-frequency tracking reference signal, where the time-frequency tracking reference signal is carried on a carrier of a new carrier type;
  • the method for transmitting a reference signal in the embodiment of the present invention notifies the user equipment of the resource configuration parameter of the time-frequency tracking reference signal carried on the NCT carrier, so that the user equipment can be correctly in various systems adopting the NCT carrier. Rate matching and/or interference cancellation are performed to enable normal communication between the base station and the user equipment, thereby improving the user experience.
  • the resource configuration parameter of the time-frequency tracking reference signal includes at least one of the following parameters: a period of the time-frequency tracking reference signal, a subframe offset value of the time-frequency tracking reference signal, and the time-frequency tracking reference.
  • the number of resource blocks RB occupied by the signal, the position of the RB occupied by the time-frequency tracking reference signal, the number of resource units RE occupied by the time-frequency tracking reference signal in the RB, and the number of antenna ports of the time-frequency tracking reference signal And the time-frequency tracking reference signal sequence initialization parameter and the pattern index of the RE occupied by the time-frequency tracking reference signal.
  • the sequence initialization parameter of the time-frequency tracking reference signal is a UE-specific sequence initialization parameter. That is to say, the sequence initialization parameter of the time-frequency tracking reference signal received by the UE is the sequence initialization parameter dedicated to the UE.
  • the at least one set of resource configuration parameters further includes a resource configuration parameter of the demodulation reference signal DMRS.
  • the resource configuration parameter of the DMRS includes at least one of the following parameters: a parameter used to indicate a period of the DMRS, a parameter used to indicate a subframe offset value of the DMRS, The number of resource block RBs occupied by the DMRS, the location of the RB occupied by the DMRS, the number of resource units RE occupied by the DMRS in the RB, the number of antenna ports of the DMRS, the sequence initialization parameters of the DMRS, and the DMRS occupied by the DMRS The index of the pattern of the RE.
  • the sequence initialization parameter of the DMRS is a UE-specific sequence initialization parameter. That is to say, the sequence initialization parameter of the DMRS received by the UE is a sequence initialization parameter dedicated to the UE.
  • the method 200 further includes:
  • S230 Receive first indication information that is sent by the base station, where the first indication information is used to indicate that the user equipment UE uses the first resource configuration parameter in the at least one resource configuration parameter to perform rate measurement.
  • the method 200 further includes:
  • S250 Receive second indication information that is sent by the base station, where the second indication information is used to indicate that the user equipment UE uses the currently received time-frequency tracking reference signal to perform time-frequency tracking until the next time-frequency tracking reference signal is received. ;
  • S260 Perform time-frequency tracking according to the second indication information.
  • the method for transmitting a reference signal in the embodiment of the present invention notifies the user equipment of the resource configuration parameter of the time-frequency tracking reference signal carried on the NCT carrier, so that the user equipment can be correctly in various systems adopting the NCT carrier. Rate matching and/or interference cancellation are performed to enable normal communication between the base station and the user equipment, thereby improving the user experience.
  • FIG. 7 shows a schematic block diagram of a base station 300 according to an embodiment of the present invention, the base station 300 including:
  • the determining module 310 is configured to determine at least one resource configuration parameter of the user equipment UE, where the at least one resource configuration parameter includes a resource configuration parameter of a time-frequency tracking reference signal, where the time-frequency tracking reference signal is carried on a carrier of a new carrier type ;
  • the sending module 320 is configured to send, to the UE, the at least one set of resource configuration parameters determined by the determining module 310.
  • the base station of the embodiment of the present invention notifies the user equipment of the resource configuration parameters of the time-frequency tracking reference signal carried on the NCT carrier, so that the user equipment can correctly perform rate matching and/or in various systems adopting the NCT carrier. Interference cancellation is performed to enable normal communication between the base station and the user equipment, thereby improving the user experience.
  • the resource configuration parameter of the time-frequency tracking reference signal determined by the determining module 310 includes at least one of the following parameters: a period of the time-frequency tracking reference signal, and a subframe offset value of the time-frequency tracking reference signal.
  • the time-frequency tracking reference signal occupies the number of resource blocks RB, the time-frequency followed The location of the RB occupied by the reference signal, the number of resource units RE occupied by the time-frequency tracking reference signal in the RB, the number of antenna ports of the time-frequency tracking reference signal, the sequence initialization parameter of the time-frequency tracking reference signal, and the The time-frequency tracking pattern index of the RE occupied by the reference signal.
  • the sequence initialization parameter of the time-frequency tracking reference signal determined by the determining module 310 is a UE-specific sequence initialization parameter.
  • the at least one set of resource configuration parameters determined by the determining module 310 further includes a resource configuration parameter of the demodulation reference signal DMRS.
  • the resource configuration parameter of the DMRS determined by the determining module 310 includes at least one of the following parameters: a parameter used to indicate a period of the DMRS, and a subframe offset used to indicate the DMRS.
  • the parameter of the value, the number of resource block RBs occupied by the DMRS, the location of the RB occupied by the DMRS, the number of resource units RE occupied by the DMRS in the RB, the sequence initialization parameter of the DMRS, and the RE occupied by the DMRS The pattern index.
  • the sequence initialization parameter of the DMRS determined by the determining module 310 is a UE-specific sequence initialization parameter.
  • the sending module 320 is further configured to send the first indication information to the UE, where the first indication information is used to indicate that the UE uses the first resource configuration in the at least one set of resource configuration parameters.
  • the parameters are rate matched.
  • the sending module 320 is further configured to send the second indication information to the UE, where the second indication information is used to indicate that the UE directly uses the currently received time-frequency tracking reference signal. Frequency tracking until the next time-frequency tracking reference signal is received.
  • the base station 300 may correspond to a base station in a method for transmitting a reference signal according to an embodiment of the present invention, and the above and other operations and/or functions of respective modules in the base station 300 are respectively implemented in order to implement FIG. The corresponding processes of the respective methods in FIG. 3 are not described here.
  • the base station of the embodiment of the present invention notifies the user equipment of the resource configuration parameters of the time-frequency tracking reference signal carried on the NCT carrier, so that the user equipment can correctly perform rate matching and/or in various systems adopting the NCT carrier. Interference cancellation is performed to enable normal communication between the base station and the user equipment, thereby improving the user experience.
  • FIG. 8 shows a schematic block diagram of a user equipment 400 according to an embodiment of the present invention.
  • the user equipment UE 400 includes:
  • the receiving module 410 is configured to receive at least one set of resource configuration parameters sent by the base station, where the at least one The set of resource configuration parameters includes a resource configuration parameter of the time-frequency tracking reference signal, and the time-frequency tracking reference signal is carried on a carrier of a new carrier type;
  • the determining module 420 is configured to determine a resource configuration of the time-frequency tracking reference signal according to the at least one set of resource configuration parameters received by the receiving module 410.
  • the user equipment of the embodiment of the present invention notifies the user equipment of the resource configuration parameters of the time-frequency tracking reference signal carried on the NCT carrier, so that the user equipment can correctly perform rate matching in various systems adopting the NCT carrier and/or Or interference cancellation is performed to enable normal communication between the base station and the user equipment, thereby improving the user experience.
  • the resource configuration parameter of the time-frequency tracking reference signal received by the receiving module 410 includes at least one of the following parameters: a period of the time-frequency tracking reference signal, and a subframe offset value of the time-frequency tracking reference signal.
  • the number of resource blocks RB occupied by the time-frequency tracking reference signal, the position of the RB occupied by the time-frequency tracking reference signal, the number of resource units RE occupied by the time-frequency tracking reference signal in the RB, and the time-frequency tracking The number of antenna ports of the reference signal, the sequence initialization parameter of the time-frequency tracking reference signal, and the pattern index of the RE occupied by the time-frequency tracking reference signal.
  • the sequence initialization parameter of the time-frequency tracking reference signal received by the receiving module 410 is a sequence initialization parameter specific to the UE.
  • the at least one set of resource configuration parameters received by the receiving module 410 further includes a resource configuration parameter of the demodulation reference signal DMRS.
  • the resource configuration parameter of the DMRS received by the receiving module 410 includes at least one of the following parameters: a parameter used to indicate a period of the DMRS, and a subframe offset used to indicate the DMRS.
  • the parameter of the value, the number of resource blocks RB occupied by the DMRS, the location of the RB occupied by the DMRS, the number of resource units RE occupied by the DMRS in the RB, the number of antenna ports of the DMRS, and the sequence initialization of the DMRS The parameter and the pattern index of the RE occupied by the DMRS.
  • the sequence initialization parameter of the DMRS received by the receiving module 410 is a sequence initialization parameter specific to the UE.
  • the receiving module 410 is further configured to receive the first indication information sent by the base station, where the first indication information is used to indicate that the UE uses the first resource in the at least one resource configuration parameter.
  • the UE 400 further includes:
  • the rate matching module 430 is configured to receive, according to the first indication information received by the receiving module 410, The at least one set of resource configuration parameters is rate matched.
  • the receiving module 410 is further configured to receive second indication information that is sent by the base station, where the second indication information is used to indicate that the user equipment UE directly uses the currently received time-frequency tracking reference signal. Perform time-frequency tracking until the next time-frequency tracking reference signal is received;
  • the UE 400 further includes:
  • the time-frequency tracking module 440 is configured to perform time-frequency tracking according to the second indication information received by the receiving module 410.
  • the user equipment 400 may correspond to a user equipment in a method for transmitting a reference signal according to an embodiment of the present invention, and the above-described and other operations and/or functions of respective modules in the user equipment 400 are respectively implemented The corresponding processes of the respective methods in FIG. 4 to FIG. 6 are not described here.
  • the user equipment of the embodiment of the present invention notifies the user equipment of the resource configuration parameters of the time-frequency tracking reference signal carried on the NCT carrier, so that the user equipment can correctly perform rate matching in various systems adopting the NCT carrier and/or Or interference cancellation is performed, so that the communication between the station and the user equipment can be normally performed, and the user experience is improved.
  • Figure 11 shows a schematic block diagram of a base station 500 including:
  • the processor 510 is configured to determine at least one resource configuration parameter of the user equipment UE, where the at least one resource configuration parameter includes a resource configuration parameter of a time-frequency tracking reference signal, where the time-frequency tracking reference signal is carried on a carrier of a new carrier type ;
  • the transmitter 520 is configured to send, to the UE, the at least one set of resource configuration parameters determined by the processor 510.
  • the base station of the embodiment of the present invention notifies the user equipment of the resource configuration parameters of the time-frequency tracking reference signal carried on the NCT carrier, so that the user equipment can correctly perform rate matching and/or in various systems adopting the NCT carrier. Interference cancellation is performed to enable normal communication between the base station and the user equipment, thereby improving the user experience.
  • the resource configuration parameter of the time-frequency tracking reference signal determined by the processor 510 includes at least one of the following parameters: a period of the time-frequency tracking reference signal, and a subframe offset value of the time-frequency tracking reference signal. And the number of resource blocks RB occupied by the time-frequency tracking reference signal, the position of the RB occupied by the time-frequency tracking reference signal, and the resource unit occupied by the time-frequency tracking reference signal in the RB The number of REs, the number of antenna ports of the time-frequency tracking reference signal, the sequence initialization parameters of the time-frequency tracking reference signal, and the pattern index of the RE occupied by the time-frequency tracking reference signal.
  • the sequence initialization parameter of the time-frequency tracking reference signal determined by the processor 510 is a UE-specific sequence initialization parameter.
  • the at least one set of resource configuration parameters determined by the processor 510 further includes a resource configuration parameter of the demodulation reference signal DMRS.
  • the resource configuration parameter of the DMRS determined by the processor 510 includes at least one of the following parameters: a parameter used to indicate a period of the DMRS, and a subframe offset used to indicate the DMRS.
  • the parameter of the value, the number of resource block RBs occupied by the DMRS, the location of the RB occupied by the DMRS, the number of resource units RE occupied by the DMRS in the RB, the sequence initialization parameter of the DMRS, and the RE occupied by the DMRS The pattern index.
  • the sequence initialization parameter of the DMRS determined by the processor 510 is a UE-specific sequence initialization parameter.
  • the transmitter 520 is further configured to send the first indication information to the UE, where the first indication information is used to indicate that the UE uses the first resource configuration in the at least one set of resource configuration parameters.
  • the parameters are rate matched.
  • the transmitter 520 is further configured to send, to the UE, second indication information, where the second indication information is used to indicate that the UE directly uses the currently received time-frequency tracking reference signal. Frequency tracking until the next time-frequency tracking reference signal is received.
  • the base station 500 may correspond to a base station in a method for transmitting a reference signal according to an embodiment of the present invention, and the above and other operations and/or functions of the respective modules in the base station 500 are respectively implemented in order to implement FIG.
  • the corresponding processes of the respective methods in FIG. 3 are not described here.
  • the base station of the embodiment of the present invention notifies the user equipment of the resource configuration parameters of the time-frequency tracking reference signal carried on the NCT carrier, so that the user equipment can correctly perform rate matching and/or in various systems adopting the NCT carrier. Interference cancellation is performed to enable normal communication between the base station and the user equipment, thereby improving the user experience.
  • FIG. 12 is a schematic block diagram of a user equipment 600 according to an embodiment of the present invention. As shown in FIG. 12, the user equipment UE 600 includes:
  • the receiver 610 is configured to receive at least one resource configuration parameter sent by the base station, where the at least one resource configuration parameter includes a resource configuration parameter of the time-frequency tracking reference signal, and the time-frequency tracking reference signal Beared on the carrier of the new carrier type;
  • the processor 620 is configured to determine a resource configuration of the time-frequency tracking reference signal according to the at least one set of resource configuration parameters received by the receiver 610.
  • the user equipment of the embodiment of the present invention notifies the user equipment of the resource configuration parameters of the time-frequency tracking reference signal carried on the NCT carrier, so that the user equipment can correctly perform rate matching in various systems adopting the NCT carrier and/or Or interference cancellation is performed to enable normal communication between the base station and the user equipment, thereby improving the user experience.
  • the resource configuration parameter of the time-frequency tracking reference signal received by the receiver 610 includes at least one of the following parameters: a period of the time-frequency tracking reference signal, and a subframe offset value of the time-frequency tracking reference signal.
  • the number of resource blocks RB occupied by the time-frequency tracking reference signal, the position of the RB occupied by the time-frequency tracking reference signal, the number of resource units RE occupied by the time-frequency tracking reference signal in the RB, and the time-frequency tracking The number of antenna ports of the reference signal, the sequence initialization parameter of the time-frequency tracking reference signal, and the pattern index of the RE occupied by the time-frequency tracking reference signal.
  • the sequence initialization parameter of the time-frequency tracking reference signal received by the receiver 610 is a sequence initialization parameter dedicated to the UE.
  • the at least one set of resource configuration parameters received by the receiver 610 further includes a resource configuration parameter of the demodulation reference signal DMRS.
  • the resource configuration parameter of the DMRS received by the receiver 610 includes at least one of the following parameters: a parameter used to indicate a period of the DMRS, and a subframe offset used to indicate the DMRS.
  • the parameter of the value, the number of resource blocks RB occupied by the DMRS, the location of the RB occupied by the DMRS, the number of resource units RE occupied by the DMRS in the RB, the number of antenna ports of the DMRS, and the sequence initialization of the DMRS The parameter and the pattern index of the RE occupied by the DMRS.
  • the sequence initialization parameter of the DMRS received by the receiver 610 is a sequence initialization parameter specific to the UE.
  • the receiver 610 is further configured to receive first indication information that is sent by the base station, where the first indication information is used to indicate that the UE uses the first resource in the at least one resource configuration parameter.
  • the processor 620 is further configured to perform rate matching according to the first indication information received by the receiver 610 and the at least one set of resource configuration parameters.
  • the receiver 610 is further configured to receive the second sent by the base station. Instructing information, the second indication information is used to indicate that the user equipment UE performs time-frequency tracking using the currently received time-frequency tracking reference signal until the next time-frequency tracking reference signal is received; accordingly, the processor 620 The method is further configured to perform time-frequency tracking according to the second indication information received by the receiver 610.
  • User equipment 600 may correspond to a user equipment in a method for transmitting a reference signal according to an embodiment of the present invention, and the above and other operations and/or functions of respective modules in user equipment 600 are respectively implemented The corresponding processes of the respective methods in FIG. 4 to FIG. 6 are not described here.
  • the user equipment of the embodiment of the present invention notifies the user equipment of the resource configuration parameters of the time-frequency tracking reference signal carried on the NCT carrier, so that the user equipment can correctly perform rate matching in various systems adopting the NCT carrier and/or Or interference cancellation is performed to enable normal communication between the base station and the user equipment, thereby improving the user experience.
  • the term "and/or” is merely an association relationship describing an associated object, indicating that there may be three relationships.
  • a and / or B can mean: A exists separately, there are A and B, and there are three cases of B alone.
  • the character " /" in this article generally indicates that the contextual object is an "or" relationship.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a USB flash drive, a mobile hard disk, a read-only memory (called “ROM”), a random access memory (“RAM” called “RAM”), a disk or A variety of media such as optical discs that can store program code.

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Abstract

La présente invention concerne un procédé de transmission d'un signal de référence, une station de base et un équipement d'utilisateur. Le procédé comprend les étapes consistant à déterminer au moins un ensemble de paramètres de configuration de ressources d'un équipement d'utilisateur (UE), l'au moins un ensemble de paramètres de configuration de ressources comprenant un paramètre de configuration de ressources d'un signal de référence de suivi temps-fréquence, le signal de référence de suivi temps-fréquence étant porté sur une porteuse d'un nouveau type (NCT); et à envoyer l'au moins un ensemble de paramètres de configuration de ressources à l'UE. Dans le procédé de transmission d'un signal de référence selon les modes de réalisation de la présente invention, en informant l'équipement d'utilisateur du paramètre de configuration de ressources du signal de référence de suivi temps-fréquence porté sur la porteuse NCT, l'équipement d'utilisateur peut effectuer avec précision une adaptation de débit et/ou une élimination des interférences dans divers systèmes adoptant une porteuse NCT, ce qui permet une communication normale entre la station de base et l'équipement d'utilisateur et améliore l'expérience de l'utilisateur.
PCT/CN2013/070957 2013-01-24 2013-01-24 Procédé de transmission de signal de référence, station de base et équipement d'utilisateur Ceased WO2014113961A1 (fr)

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