WO2019029426A1 - Procédé et appareil utilisés dans l'émission de signaux de référence - Google Patents

Procédé et appareil utilisés dans l'émission de signaux de référence Download PDF

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Publication number
WO2019029426A1
WO2019029426A1 PCT/CN2018/098289 CN2018098289W WO2019029426A1 WO 2019029426 A1 WO2019029426 A1 WO 2019029426A1 CN 2018098289 W CN2018098289 W CN 2018098289W WO 2019029426 A1 WO2019029426 A1 WO 2019029426A1
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WIPO (PCT)
Prior art keywords
csi
rss
indication information
terminal
time
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PCT/CN2018/098289
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English (en)
Chinese (zh)
Inventor
孙鹏
郤伟
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维沃移动通信有限公司
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Publication of WO2019029426A1 publication Critical patent/WO2019029426A1/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
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • 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
    • 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
    • H04L27/2656—Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe synchronisation
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present disclosure relates to the field of wireless communication technologies, and in particular, to a method and apparatus for transmitting a reference signal.
  • the related technology is mainly based on the tracking reference signal sent by the base station after the user equipment synchronizes according to the Primary Synchronization Signal (PSS) and the Secondary Synchronization Signal (SSS) sent by the base station.
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • TRS Tracking Reference Signal
  • the terminal performs time-frequency tracking on the data transmitted by the received base station according to a cell-specific reference signal (CRS) sent by the base station, that is, the TRS in the LTE system is a CRS.
  • CRS cell-specific reference signal
  • the base station sends the CRS to the terminal, it will continue to transmit all the time, resulting in a large amount of signaling overhead and pilot pollution in the entire communication system.
  • the present disclosure provides a method for transmitting a reference signal, including: determining first indication information, the first indication information being used to indicate at least two Channel State Information (CSI) to a first terminal.
  • the time-frequency resource of the CSI Reference Signal (CSI-RS), the at least two CSI-RSs are used for time-frequency tracking; and the first indication information is sent to the first terminal.
  • CSI-RS CSI Reference Signal
  • the present disclosure provides an apparatus for transmitting a reference signal
  • the apparatus may implement the method for transmitting a reference signal of the first aspect
  • the apparatus may be a network device, in one possible design
  • the device includes a determining unit and a sending unit, where: a determining unit, configured to determine first indication information, where the first indication information is used to indicate video resources of at least two CSI-RSs, where the at least two CSI-RSs are used for time-frequency
  • a sending unit configured to send the first indication information to the first terminal.
  • the network device in the present disclosure sends the first indication information to the first terminal, and informs the CSI-RS that is subsequently sent by the first terminal to include the CSI-RS for time-frequency tracking, so that the first terminal receives the After the first indication information, the CSI-RS for time-frequency tracking can be acquired for time-frequency tracking.
  • the existing pilot signal By using the existing pilot signal, the existing pilot signaling can be reduced according to the existing signaling, and the pilot signal used for other purposes can be used as the time-frequency tracking, which is reduced. Corresponding pilot overhead.
  • the first indication information is used to indicate, to the first terminal, time-frequency resources of at least two CSI-RSs in the first CSI-RS resource set.
  • the first indication information is used to indicate to the first terminal, the time-frequency resource of the CSI-RS of the at least one CSI-RS group in the second CSI-RS resource set; wherein each CSI-RS group is used for the time-frequency Tracking, each CSI-RS group includes at least two CSI-RSs.
  • the foregoing first CSI-RS resource set includes, but is not limited to, a set of resource configuration information of a CSI-RS
  • the foregoing second CSI-RS resource set includes, but not limited to, a CSI-RS of a CSI-RS group.
  • Resource configuration information Exemplarily, the foregoing first CSI-RS resource set and the second CSI-RS resource set may be a set of CSI-RS resources agreed by the network side and the terminal side in advance by a pre-agreed manner (for example, an existing protocol).
  • the CSI-RS resource set of the CSI-RS for acquiring channel state information configured for the terminal in advance for the network device may also be used.
  • the foregoing first indication information is used to indicate, to the first terminal, an identifier of at least two CSI-RSs in the first CSI-RS resource set, where the identifier of the CSI-RS is used to indicate a time frequency of the CSI-RS.
  • the first indication information is used to indicate to the first terminal the group number of the at least one CSI-RS group in the second CSI-RS resource set, where the group number of the CSI-RS group is used to indicate the CSI of the CSI-RS group. -RS time-frequency resources.
  • the resource configuration information of the foregoing CSI-RS includes at least one of the following information: a period of a CSI-RS, a subframe offset value of a CSI-RS, and a resource block (RB) occupied by a CSI-RS.
  • a period of a CSI-RS a subframe offset value of a CSI-RS
  • a resource block (RB) occupied by a CSI-RS Location, the number of resource unit REs occupied by the CSI-RS in the RB, the number of antenna ports of the CSI-RS, the sequence initialization parameters of the CSI-RS, and the pattern information of the RE occupied by the CSI-RS to carry the CSI-SR Carrier type.
  • the first indication information in the disclosure includes: pattern information of the at least two CSI-RSs (Resource Element, RE) .
  • the technical solution provided by the first aspect further includes: sending an indication information directly to the first terminal, to indicate at least two pre-configured CSIs. -RS and instruct it to be used for time-frequency tracking.
  • the first indication information in the technical solution includes: resource configuration information of a CSI-RS corresponding to the at least two CSI-RSs, where the resource configuration information of the CSI-RS is used to indicate at least two pre-configured CSIs. -RS and instruct it to be used for time-frequency tracking.
  • the technical solution provided by the first aspect further includes: the network device may further select at least two CSI-RSs before determining the first indication information. , thereby reducing the overhead of notification signaling.
  • the device further comprises a selection unit. Wherein: the selection unit is used to select at least two CSI-RSs.
  • the technical solution provided by the first aspect further includes: using the CSI-RS for time-frequency tracking for other purposes, to reduce the correspondence. Pilot overhead.
  • the technical solution further includes at least one of the following: the solution A: sending the second indication information to the second terminal; the solution B: sending the third indication information to the third terminal; and the scenario C: sending the fourth terminal to the fourth terminal Four instructions.
  • the sending unit is further configured to implement at least one of the following steps: Step A: sending second indication information to the terminal; Step B: transmitting third indication information to the terminal; Step C : Send the fourth indication information to the terminal.
  • the second indication information is used to indicate that the second terminal performs rate matching according to the at least two CSI-RSs.
  • the third indication information is used to indicate that the third terminal is configured according to any one of the at least two CSI-RSs.
  • the RS performs beam management; the foregoing fourth indication information is used to instruct the fourth terminal to acquire channel state information according to any CSI-RS of the at least two CSI-RSs.
  • the present disclosure provides a method for transmitting a reference signal, including: receiving first indication information, where the first indication information is used to indicate, to a first terminal, time-frequency resources of at least two CSI-RSs, where At least two CSI-RSs are used for time-frequency tracking; at least two CSI-RSs are determined according to the first indication information.
  • the present disclosure is an apparatus for transmitting a reference signal
  • the apparatus may implement the method for transmitting a reference signal of the second aspect
  • the apparatus may be a terminal
  • the apparatus includes a receiving unit and a determining unit, wherein: the receiving unit is configured to receive first indication information, where the first indication information is used to indicate time-frequency resources of at least two CSI-RSs to the first terminal, and the determining unit is configured to use, according to the first The indication information determines at least two CSI-RSs.
  • the technical solution provided by the second aspect further includes: determining a first CSI-RS resource set, where the foregoing first indication information is used to Determining, by the first terminal, a time-frequency resource of at least two CSI-RSs in the first CSI-RS resource set; or determining a second CSI-RS resource set, where the foregoing first indication information is used to indicate to the first terminal a time-frequency resource of a CSI-RS of at least one CSI-RS group in the second CSI-RS resource set; wherein each CSI-RS group is used for time-frequency tracking, and each CSI-RS group includes at least two CSIs -RS.
  • the determining unit is further configured to determine a first CSI-RS resource set or a second CSI-RS resource set.
  • the foregoing first CSI-RS resource set and the second CSI-RS resource set are CSI-RS sets that are agreed in advance by the network side and the terminal side in a pre-agreed manner (for example, an existing protocol).
  • the technical solution provided by the second aspect further includes: performing time-frequency on the data sent by the received network device according to the at least two CSI-RSs track.
  • the apparatus further includes: a time-frequency tracking unit, configured to perform time-frequency tracking on the data sent by the received network device according to the at least two CSI-RSs.
  • the technical solution provided by the second aspect further includes: using the CSI-RS for time-frequency tracking for other purposes, for example, rate matching To reduce the corresponding pilot overhead.
  • the technical solution further includes: receiving second indication information, where the second indication information is used to indicate that the terminal performs rate matching according to the at least two CSI-RSs, and performs rate matching according to the second indication information and the at least two CSI-RSs. .
  • the receiving unit is further configured to receive second indication information, where the second indication information is used to indicate that the terminal performs rate matching according to the at least two CSI-RSs; the terminal further includes: a rate And a matching unit, configured to perform rate matching according to the second indication information and the at least two CSI-RSs.
  • the technical solution provided by the second aspect further includes: using the CSI-RS for time-frequency tracking for other purposes, for example, beam management.
  • the technical solution further includes: receiving third indication information, where the third indication information is used to indicate that the terminal performs beam management according to any one of the at least two CSI-RSs, according to the third indication information, and Beam management is performed on any of the at least two CSI-RSs.
  • the receiving unit is further configured to receive third indication information, where the third indication information is used to indicate that the terminal performs beam management according to any one of the at least two CSI-RSs.
  • the apparatus further includes: a beam management unit, configured to perform beam management according to the third indication information and any one of the at least two CSI-RSs.
  • the technical solution provided by the second aspect further includes: using the CSI-RS for time-frequency tracking for other purposes, for example, a channel state. Information acquisition to reduce the corresponding pilot overhead.
  • the technical solution further includes: receiving fourth indication information, the fourth indication information is used to instruct the terminal to acquire channel state information according to any CSI-RS in the at least two CSI-RSs, according to the fourth indication information and the at least two CSIs - Any CSI-RS in the RS acquires channel state information.
  • the receiving unit is further configured to receive fourth indication information, where the fourth indication information is used to indicate that the terminal acquires a channel state according to any one of the at least two CSI-RSs.
  • the device further includes: a channel detecting unit, configured to acquire channel state information according to the fourth indication information and any CSI-RS of the at least two CSI-RSs.
  • a method for transmitting a reference signal includes: determining a time-frequency resource of at least two CSI-RSs in a preset third CSI-RS resource set, or determining a pre-configured fourth CSI a time-frequency resource of a CSI-RS in at least one CSI-RS group in the RS resource set, wherein each CSI-RS group includes at least two CSI-RSs; using time-frequency resources of the at least two CSI-RSs The first terminal transmits a CSI-RS, wherein the CSI-RS is used for time-frequency tracking.
  • the present disclosure provides an apparatus for transmitting a reference signal
  • the apparatus may implement the method for transmitting a reference signal of the first aspect
  • the apparatus may be a network device, in one possible design
  • the apparatus includes a determining unit and a sending unit, where: the determining unit is configured to determine a time-frequency resource of at least two CSI-RSs in the preset third CSI-RS resource set, or to determine a pre-configured fourth CSI a time-frequency resource of a CSI-RS in at least one CSI-RS group in the RS resource set; wherein each CSI-RS group includes at least two CSI-RSs; a transmitting unit for using at least two CSI-RSs
  • the time-frequency resource sends a CSI-RS to the first terminal; wherein the CSI-RS is used for time-frequency tracking.
  • the CSI-RS may be sent to the first terminal according to the time-frequency resource. Since these CSI-RSs are pre-agreed CSI-RSs on the network side and the terminal side, the network side does not need to send indication information to the terminal side for indication.
  • the technical solution provided by the third aspect further includes: determining the time-frequency resource of the at least two CSI-RSs in the preset third CSI-RS resource set.
  • the method includes: determining, according to the network parameter information, a time-frequency resource of at least two CSI-RSs in the third CSI-RS resource set; or determining the at least one CSI-RS in the pre-configured fourth CSI-RS resource set.
  • the time-frequency resource of the CSI-RS in the group includes: determining, according to the network parameter information, a time-frequency resource of at least two CSI-RSs in the third CSI-RS resource set.
  • the determining unit when determining the time-frequency resources of the at least two CSI-RSs in the preset third CSI-RS resource set, is specifically configured to: determine, according to the network parameter information, the advance a time-frequency resource of at least two CSI-RSs in the configured third CSI-RS resource set; or the determining unit determines CSI-RS in at least one of the pre-configured fourth CSI-RS resource sets
  • the time-frequency resource is specifically configured to: determine time-frequency resources of the CSI-RS in the at least one CSI-RS group in the pre-configured fourth CSI-RS resource set according to the network matching information.
  • the network parameter information includes at least one of the following information: a cell ID of a cell managed by the network device, and a mapping relationship between the cell and a time-frequency resource of the CSI-RS, where the cell of the cell managed by the network device is located The mapping between the area ID and the time-frequency resource of the area and the CSI-RS, and the number of CSI-RS resources in the CSI-RS set configured by the CSI-RS resource set.
  • the technical solution provided by the third aspect further includes: using the CSI-RS for time-frequency tracking for other purposes, for example, rate matching , beam management, channel state information acquisition to reduce the corresponding pilot overhead.
  • the CSI-RS for time-frequency tracking for other purposes, for example, rate matching , beam management, channel state information acquisition to reduce the corresponding pilot overhead.
  • the disclosure provides a method for transmitting a reference signal, including: determining a time-frequency resource of at least two CSI-RSs in a preset third CSI-RS resource set, or determining a pre-configured Time-frequency resources of CSI-RSs in at least one CSI-RS group in the fourth CSI-RS resource set, wherein each CSI-RS group includes at least two CSI-RSs; time-frequency using at least two CSI-RSs The resource receives a CSI-RS, wherein the CSI-RS is used for time-frequency tracking.
  • the apparatus may implement the method for transmitting a reference signal of the first aspect, for example, the apparatus may be a terminal, and in one possible design, the terminal a determining unit and a receiving unit, where: a determining unit, configured to determine a unit, configured to determine a time-frequency resource of at least two CSI-RSs in a preset third CSI-RS resource set, or determine a pre-configured first a time-frequency resource of a CSI-RS in at least one CSI-RS group of the four CSI-RS resource sets, wherein each CSI-RS group includes at least two CSI-RSs; and a receiving unit that uses at least two CSI- The time-frequency resource of the RS receives the CSI-RS, wherein the CSI-RS is used for time-frequency tracking.
  • a determining unit configured to determine a unit, configured to determine a time-frequency resource of at least two CSI-RSs in a preset third CSI-RS resource set, or determine a pre-configured first a
  • the technical solution provided by the fourth aspect further includes: determining the time-frequency resource of the at least two CSI-RSs in the preset third CSI-RS resource set.
  • the method includes: determining time-frequency resources of at least two CSI-RSs in the third CSI-RS resource set according to the network parameter information; determining the at least one CSI-RS group in the pre-configured fourth CSI-RS resource set
  • the time-frequency resource of the CSI-RS includes: determining, according to the network parameter information, a time-frequency resource of at least two CSI-RSs in the third CSI-RS resource set.
  • the determining unit when determining the time-frequency resources of the at least two CSI-RSs in the preset third CSI-RS resource set, is specifically configured to: determine, according to the network parameter information, Time-frequency resources of at least two CSI-RSs in the three CSI-RS resource sets; or, when the determining unit determines the CSI-RSs in at least one of the pre-configured fourth CSI-RS resource sets
  • the frequency resource is specifically configured to: determine time-frequency resources of at least two CSI-RSs in the third CSI-RS resource set according to the network parameter information.
  • the network parameter information includes at least one of the following information: a serving cell ID of the first terminal, and a mapping relationship between the cell and the time-frequency resource of the CSI-RS, and an area ID of the area where the server cell of the first terminal is located. And a mapping relationship between the area and the time-frequency resource of the CSI-RS, and the number of CSI-RS resources in the CSI-RS set configured by the CSI-RS resource set.
  • the technical solution provided by the fourth aspect further includes: performing time-frequency on the data sent by the received network device according to the at least two CSI-RSs track.
  • the apparatus further includes: a time-frequency tracking unit, configured to perform time-frequency tracking on the data sent by the received network device according to the at least two CSI-RSs.
  • the technical solution provided by the fourth aspect further includes: using the CSI-RS for time-frequency tracking for other purposes, for example, rate matching, beam management, and channel Status information is obtained to reduce the corresponding pilot overhead.
  • the CSI-RS for time-frequency tracking for other purposes, for example, rate matching, beam management, and channel Status information is obtained to reduce the corresponding pilot overhead.
  • first terminal, the second terminal, the third terminal, and the fourth terminal in the disclosure may be the same terminal, or may be different terminals, which is not limited in this disclosure.
  • the apparatus can include a processor and a memory.
  • the processor is configured to support the apparatus to perform the corresponding functions of the methods of the corresponding aspects described above.
  • the memory is for coupling with a processor that holds the programs and data necessary for the device.
  • the apparatus can also include a communication interface for supporting communication between the apparatus and other network elements.
  • the communication interface can be a transceiver.
  • the present disclosure also provides a computer storage medium having stored thereon a computer program that, when executed on a computer, causes the computer to perform the method of any of the above aspects.
  • the present disclosure also provides a computer program product, when run on a computer, causing the computer to perform the method of any of the above aspects.
  • the present disclosure also provides a communication chip in which instructions are stored that, when run on a network device or terminal, cause the network device or terminal to perform the methods described in the various aspects above.
  • any of the devices or computer storage media or computer program products provided above are used to perform the corresponding methods provided above, and therefore, the beneficial effects that can be achieved can be referred to the beneficial effects in the corresponding methods. , will not repeat them here.
  • FIG. 1 is a structural diagram of a communication system to which the technical solution provided by the embodiment of the present disclosure is applied;
  • FIG. 2 is a schematic flowchart diagram of a method for transmitting a reference signal according to an embodiment of the present disclosure
  • FIG. 3 is a pilot diagram provided by an embodiment of the present disclosure.
  • FIG. 4 is another pilot diagram provided by an embodiment of the present disclosure.
  • FIG. 5 is a schematic flowchart of still another method for transmitting a reference signal according to an embodiment of the present disclosure
  • FIG. 6 is a schematic flowchart diagram of another method for transmitting a reference signal according to an embodiment of the present disclosure
  • FIG. 7 is a schematic flowchart diagram of still another method for transmitting a reference signal according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic flowchart diagram of another method for transmitting a reference signal according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure.
  • the words “first”, “second”, etc. are used to distinguish the same or similar items whose functions or functions are substantially the same, in the field.
  • the skilled person will understand that the words “first”, “second” and the like do not limit the number and order of execution.
  • the technical solutions provided by the present disclosure can be applied to various communication systems, for example, a 5G communication system, a future evolution system, or a plurality of communication fusion systems, and the like.
  • M2M machine to machine
  • eMBB enhanced mobile broadband
  • uRLLC ultra high reliability and ultra low latency communication
  • mMTC massive machine type communication
  • Embodiments of the present disclosure may be applied to communication with a network device and a terminal in a 5G communication system, or communication between a terminal and a terminal, or communication between a network device and a network device.
  • FIG. 1 is a schematic diagram showing a possible structure of a communication system according to an embodiment of the present disclosure.
  • the communication system includes at least one network device 100 (only one is shown in FIG. 1) and one or more terminals 200 to which each network device 100 is connected.
  • the network device 100 may be a base station, a core network device, a transmission reference point (TRP), a relay station, or an access point.
  • TRP transmission reference point
  • the network device 100 may be a base transceiver station (BTS) in a global system for mobile communication (GSM) or a code division multiple access (CDMA) network, or may be a broadband
  • the NB (NodeB) in the code division multiple access (WCDMA) may also be an eNB or an eNodeB (evolutional NodeB) in LTE.
  • the network device 100 may also be a wireless controller in a cloud radio access network (CRAN) scenario.
  • the network device 100 may also be a network device in a 5G communication system or a network device in a future evolved network; it may also be a wearable device or an in-vehicle device or the like.
  • the terminal 200 can be a wireless terminal or a wired terminal, and the wireless terminal can be a device that provides voice and/or other service data connectivity to the user, a handheld device with wireless communication capabilities, a computing device, or other processing connected to the wireless modem.
  • the wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • RAN Radio Access Network
  • the wireless terminal can also be a mobile device or a user device ( User equipment, UE), UE terminal, access terminal, wireless communication device, terminal unit, terminal station, mobile station, mobile station, remote station (Remote Station), remote station, remote terminal (Remote) Terminal), Subscriber Unit, Subscriber Station, User Generation (User Agent), the terminal device and the like.
  • UE User equipment
  • UE terminal access terminal
  • wireless communication device terminal unit, terminal station, mobile station, mobile station, remote station (Remote Station), remote station, remote terminal (Remote) Terminal), Subscriber Unit, Subscriber Station, User Generation (User Agent), the terminal device and the like.
  • the above is merely an example, and the actual application is not limited thereto.
  • the user equipment In order to maintain the traffic transmission in the communication system and alleviate the time offset and frequency offset of the signals transmitted in the communication system, the user equipment needs to perform the synchronization operation according to the reference signal sent by the network device.
  • the synchronization is further divided into initial coarse synchronization and time-frequency tracking fine synchronization, and the initial coarse synchronization is performed according to a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS) sent by the base station, and
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • TRS Tracking Reference Signal
  • the TRS for time-frequency tracking is CRS.
  • the time-frequency tracking can be divided into two parts according to the time domain and the frequency domain: 1) time domain tracking and delay spread estimation: the tracking range depends on the frequency domain density of the TRS, and the tracking accuracy depends on the frequency domain bandwidth of the TRS; Frequency domain tracking and Doppler spread estimation: The tracking range depends on the time domain density of the TRS, and the tracking accuracy depends on the time domain period of the TRS.
  • the present disclosure implements time-frequency tracking by constructing a new TRS using existing reference signals (ie, pilot signals).
  • existing reference signals ie, pilot signals
  • the CSI-RS used in the present disclosure for constructing a new TRS is only one possible way for other existing pilot signals (eg, CRS, reduced cell-specific reference signals).
  • CRS reduced cell-specific reference signals
  • PSS PSS
  • SSS SSS
  • PRS PRS
  • the construction process of constructing a new TRS using the existing pilot signals in the present disclosure does not perform any processing on the original pilot signals, but only by transmitting at least two pilot signals in the time domain at the time of transmission.
  • the aggregation is performed, so that the opposite terminal performs time-frequency tracking according to the received at least two pilot signals.
  • the essence is simply to transmit at least two pilot signals as TRS.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • FIG. 2 is a schematic flow chart of a method for transmitting a reference signal provided by the present disclosure. The method specifically includes:
  • the network device determines first indication information.
  • the network device sends the first indication information to the first terminal.
  • the peer first terminal receives the first indication information.
  • the foregoing network device may be a network device in the communication system shown in FIG. 1, for example, a base station; and the foregoing first terminal may be a terminal device in the communication system shown in FIG. 1.
  • the first indication information in the disclosure is used to indicate to the first terminal time-frequency resources of at least two CSI-RSs, and the at least two CSI-RSs are used for time-frequency tracking.
  • the first indication information is specifically used to indicate that the first terminal performs time-frequency tracking using the received tracking reference signal (ie, the disclosure indicates that at least two CSI-RSs indicated by the first indication information are TRS) until receiving. Go to the next tracking reference signal.
  • the reference signal used for time-frequency tracking carried on the sub-carrier is referred to as a tracking reference signal in the present disclosure, that is, the present disclosure refers to at least two CSI-RSs used for time-frequency tracking as a time-frequency tracking signal.
  • the tracking reference signal in the present disclosure is commanded according to the inherent logic function of the reference signal. Therefore, the tracking reference signal in the present disclosure may have other names, and the name cannot be defined as an embodiment of the present disclosure.
  • the base station in the LTE system sends the CRS to the UE for time-frequency tracking, it will continue to transmit continuously, resulting in a large amount of signaling overhead and pilot pollution in the entire communication system. If you design a new TRS for time-frequency tracking, you need to design a new pilot model or pattern, and use new signaling to notify, which introduces a large reference signal overhead, further reducing the efficiency of resource utilization. At the same time, the new pilot signal cannot be taken with other pilot signals, it can only be used as time-frequency tracking, and other functions cannot be implemented.
  • the network device in the present disclosure sends the first indication information to the terminal to notify the terminal that the CSI-RS sent by the terminal includes the CSI-RS for time-frequency tracking, so that the terminal according to the received first indication information.
  • the CSI-RS for time-frequency tracking can be acquired for time-frequency tracking.
  • the existing pilot signal By using the existing pilot signal, the corresponding pilot overhead can be reduced according to the existing signaling notification, and the pilot signal used for other purposes can also be used as the time-frequency tracking, which reduces the correspondence. Pilot overhead.
  • the following two implementation manners may be determined. specific:
  • the first indication information sent by the network device includes: resource configuration information of CSI-RS corresponding to at least two CSI-RSs for time-frequency tracking.
  • the resource configuration information of the CSI-RS is used to indicate at least two CSI-RSs and is indicated for time-frequency tracking.
  • the base station selects CSI-RS1 and CSI-RS2 to jointly perform time-frequency tracking, and the CSI-RS transmitted by the base station to the terminal does not include CSI-RS1 dedicated to channel state information acquisition.
  • the base station selects CSI-RS1 and CSI-RS2 to jointly perform time-frequency tracking, and the CSI-RS transmitted by the base station to the terminal does not include CSI-RS1 dedicated to channel state information acquisition.
  • the network side may directly send the first indication information to the terminal to indicate at least two pre-configured CSI-RSs, and indicate them for time-frequency tracking.
  • the first indication information is used to indicate to the first terminal, the time-frequency resource of the at least two CSI-RSs in the first CSI-RS resource set; or the first indication information is used to indicate the second terminal to the first terminal.
  • Each CSI-RS group is used for time-frequency tracking, and each CSI-RS group includes at least two CSI-RSs.
  • the foregoing first CSI-RS resource set and the second CSI-RS resource set are existing existing network device configured for the first terminal for acquiring channel state information (or other uses, such as beam management).
  • the CSI-RS resource set of the CSI-RS because the CSI-RS resource set is a CSI-RS resource set of the CSI-RS that the network device is configured for the first terminal. Therefore, the disclosure may directly send the first indication information to the first terminal to indicate the pre-configured at least two CSI-RSs, and indicate that they are used for time-frequency tracking, and the terminal may be in the first indication information after receiving the first indication information.
  • the configured CSI-RS resource set searches for the corresponding time-frequency resource to receive the CSI-RS for time-frequency tracking, and does not need to configure a dedicated TRS time-frequency resource for the first terminal, and can directly use the network side as the medium time. Frequency resources, reducing signaling overhead.
  • the pilot map of the CSI-RS transmitted by the base station to the terminal shown in FIG. 4 where the pilot map embodies the RE positions of the four CSI-RS1s, that is, the base station sends the channel status information to the terminal.
  • the pilot map embodies the RE positions of the four CSI-RS1s, that is, the base station sends the channel status information to the terminal.
  • There are 4 CSI-RS1s ie, CSI-RS1, CSI-RS2, CSI-RS3, and CSI-RS4
  • CSI-RS1 and CSI-RS2 are CSI-RSs selected by the base station for time-frequency tracking.
  • the first indication information includes: pattern information of the occupied REs of the at least two CSI-RSs.
  • Manner 3 The network side and the terminal test pre-configure the CSI-RS resource set for the two parties according to the agreed manner, and then send the first indication information to instruct the terminal to find the corresponding CSI-RS from the pre-configured CSI-RS resource set. Time-frequency resources.
  • the foregoing first indication information is used to indicate, to the first terminal, time-frequency resources of at least two CSI-RSs in the first CSI-RS resource set; or, the first indication information is used to indicate to the first terminal.
  • the foregoing first CSI-RS resource set and the second CSI-RS resource set are: the network side and the terminal measure a CSI-RS resource set pre-configured according to a predetermined manner (eg, an existing protocol), Therefore, the network device may directly send the first indication information to the terminal to indicate which CSI-RSs or CSI-RS groups in the CSI-RS set configured by the pre-configured CSI-RS resource set are used for time-frequency tracking.
  • a predetermined manner eg, an existing protocol
  • the first indication information includes: pattern information of the occupied REs of the at least two CSI-RSs.
  • the first indication information in the foregoing manners 1 and 2 is used to indicate, to the first terminal, an identifier of at least two CSI-RSs in the first CSI-RS resource set, where the identifier of the CSI-RS is used.
  • the time-frequency resource indicating the CSI-RS is used to indicate, to the first terminal, a group number of at least one CSI-RS group in the second CSI-RS resource set; wherein the group number of the CSI-RS group is used A time-frequency resource indicating a CSI-RS of the CSI-RS group.
  • the first indication information includes: pattern information of the occupied REs of the at least two CSI-RSs.
  • the resource configuration information of the CSI-RS included in the first CSI-RS resource set and the second CSI-RS resource set includes at least one of the following: a period of the CSI-RS, and a subframe of the CSI-RS.
  • Offset value location of occupied RB of CSI-RS, number of resource unit REs occupied by RRC in CSI-RS, number of antenna ports of CSI-RS, sequence initialization parameters of CSI-RS, CSI-RS occupation
  • the pattern information of the RE to carry the carrier type of the CSI-SR.
  • the period of the CSI-RS and the subframe offset value may be used to indicate the subframe information occupied by the CSI-RS.
  • the subframe information occupied by the CSI-RS may be represented by a bit mapping manner.
  • the pattern information of the RE occupied by the CSI-RS includes the pattern index of the RE occupied by the CSI-RS, so that the terminal can determine the RE occupied by the CSI-RS in one RB according to the pattern index and the preset pattern, but The present disclosure is not limited to this.
  • the network side and the terminal side may preset the partial resource configuration information of the CSI-RS.
  • the CSI-RS may be preset to occupy a few RBs of the system bandwidth, or the period or the occupied CSI-RS may be preset. The number of RBs, and so on.
  • the network side and the terminal side may preset at least one pattern of REs occupied by the CSI-RS in one RB.
  • the network device in the present disclosure selects at least two CSI-RSs for time-frequency tracking
  • the network device may select according to a preset rule, thereby reducing the overhead of the notification signaling.
  • the preset rule for the CSI-RS that selects the time-frequency tracking can be preset, for example, set in advance by a protocol, or configured in advance by signaling.
  • the foregoing predetermined rules are only an example. In an actual application, as long as the CSI-RS that can satisfy the condition of reducing the signaling overhead is selected, it is not limited herein.
  • the network device sends at least two CSI-RSs to the first terminal.
  • Each CSI-RS sent by the network device corresponds to one precoding matrix information, and each precoding matrix information may be beam information of the CSI-RS, and the terminal may implement beam management, channel state information acquisition, and channel information based on the beam information. Rate matching. For example, when the network device sends at least two CSI-RSs to the first terminal, at least one set of reference signals may be sent to the terminal in N time units in one time unit, and each set of reference signals includes time-frequency tracking. At least two CSI-RSs.
  • the foregoing time unit set may be a restricted measurement subframe set configured by the network device for the terminal, and the network device sends, to the UE, the M sets of reference signals in the N subframes in the restricted measurement subframe set, where the N
  • the subframes may be N consecutive subframes or N consecutive subframes, which are not limited herein.
  • the base station sends at least one set of reference signals to the terminal in each subframe, and after receiving the reference signal, the terminal performs corresponding time-frequency tracking, beam management, channel state information acquisition, and the like according to the reference signal in the subframe. Rate matching.
  • the first terminal determines, according to the first indication information, at least two CSI-RSs.
  • the terminal determines, according to the received first indication information, the location of the RE occupied by the at least two CSI-RSs for time-frequency tracking, and receives the at least two CSI-RSs based on the location of the occupied RE.
  • the first terminal performs time-frequency tracking on the data sent by the received network device according to the at least two CSI-RSs.
  • the terminal after receiving the at least two CSI-RSs for time-frequency tracking, selects any two CSI-RSs from the CSI-RSs, and then determines the two CSI-RSs. Phase deviation and time interval, then, based on the phase deviation and time interval between the two CSI-RSs, estimate the corresponding frequency deviation, and perform joint time-offset estimation on the two CSI-RSs to estimate the corresponding Time deviation, finally, frequency compensation based on the estimated frequency deviation, time offset based on the estimated time deviation, thereby completing time-frequency tracking, real-time frequency synchronization, eliminating interference, thereby enabling normal communication between the network device and the terminal To improve the user experience.
  • the network test can also use the CSI-RS for time-frequency tracking for other purposes to reduce the corresponding pilot overhead. For example, rate matching, beam management, and channel state information acquisition.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • FIG. 5 is a schematic flow chart of a method for transmitting a reference signal provided by the present disclosure. The method specifically includes:
  • the network device determines time-frequency resources of at least two CSI-RSs in the preset third CSI-RS resource set, or determines at least one CSI-RS group in the pre-configured fourth CSI-RS resource set.
  • the network device sends the CSI-RS to the first terminal by using the time-frequency resources of the at least two CSI-RSs.
  • the CSI-RS is used for time-frequency tracking.
  • determining, in the foregoing step S301, the time-frequency resources of the at least two CSI-RSs in the preset third CSI-RS resource set includes:
  • the network device determines, according to the network parameter information, a time-frequency resource of at least two CSI-RSs in the preset third CSI-RS resource set.
  • the time-frequency resource of the CSI-RS in the at least one CSI-RS group in the fourth CSI-RS resource set that is configured in the foregoing step S301 is:
  • the network device determines a time-frequency resource of the CSI-RS in the at least one CSI-RS group in the pre-configured fourth CSI-RS resource set according to the network matching information.
  • the parameter information in the foregoing S301a and S301b includes at least one of the following: a cell ID of a cell managed by the network device, and a mapping relationship between the cell and a time-frequency resource of the CSI-RS, and a cell of the cell managed by the network device.
  • the first terminal determines a time-frequency resource of at least two CSI-RSs in the preset third CSI-RS resource set, or determines at least one CSI-RS group in the pre-configured fourth CSI-RS resource set.
  • the first terminal receives the CSI-RS by using time-frequency resources of the at least two CSI-RSs, where the CSI-RS is used for time-frequency tracking.
  • determining the time-frequency resources of the at least two CSI-RSs in the preset third CSI-RS resource set in the foregoing step S303 including:
  • the first terminal determines time-frequency resources of at least two CSI-RSs in the third CSI-RS resource set according to the network parameter information.
  • the optional time-frequency resource of the CSI-RS in the at least one CSI-RS group in the fourth CSI-RS resource set, which is included in the foregoing step S303, includes:
  • the first terminal determines time-frequency resources of at least two CSI-RSs in the fourth CSI-RS resource set according to the network parameter information.
  • the network parameter information in step S303a and step S303b includes at least one of the following information: a serving cell ID of the first terminal, and a mapping relationship between the cell and the time-frequency resource of the CSI-RS, where the server cell of the terminal is located.
  • the number of CSI-RS resources in the CSI-RS set configured corresponding to the second CSI-RS resource set is 1.
  • determining, according to the foregoing CSI-RS resource quantity 1, a unique CSI-RS group included in the second CSI-RS resource set is a CSI-RS group used for time-frequency tracking.
  • the network device does not need to send the first indication information to the terminal side for indication.
  • the first terminal performs time-frequency tracking on the data sent by the received network device according to the at least two CSI-RSs.
  • step S302 in this embodiment may refer to step S203 in the embodiment.
  • step S305 in this embodiment reference may be made to the step S205 of the embodiment. That is, the description related to the first embodiment of the present embodiment can refer to the content in the embodiment, and details are not described herein again.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • FIG. 6 is a schematic flowchart diagram of another method for transmitting a reference signal according to the present disclosure.
  • the terminal when the network device needs to perform actual scheduling on the terminal, the terminal may be instructed to use the time-frequency tracking.
  • CSI-RS performs rate matching.
  • the steps S201-S204 in the first embodiment are referred to, or the steps S301-S304 in the second embodiment are referenced.
  • the method further includes:
  • the network device sends the second indication information to the terminal, where the second indication information is used to indicate that the second terminal performs rate matching according to the at least two CSI-RSs.
  • the second terminal receives the second indication information.
  • the second terminal performs rate matching according to the second indication information and the at least two CSI-RSs.
  • rate matching means that bits on the transmission channel are repeated or punctured (puncturing is to destroy the current bit, and the subsequent bits are sequentially advanced) One bit, to match the carrying capacity of the physical channel, and achieve the bit rate required by the transmission format when the channel is mapped.
  • the terminal calculates the number of output bits on the transmission channel between the network side and the terminal side according to the pilot patterns of the CSI-RSs, if input The number of bits is less than the number of output bits, that is, using the repetition; if the number of input bits is more than the number of output bits, it is puncturing.
  • rate matching technology mentioned in this embodiment is prior art, and therefore, the present disclosure does not limit the specific implementation of rate matching.
  • step S202 and step S401 can be simultaneously sent.
  • a signaling may be sent, where the first indication information is carried in the signaling, and the second indication information is also carried, and may also be separately sent.
  • the order of execution is not limited.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • FIG. 7 is a schematic flowchart diagram of another method for transmitting a reference signal provided by the present disclosure.
  • any CSI for time-frequency tracking may be used.
  • the RS is configured to be used as a pilot resource for beam management by the terminal or other terminal.
  • the steps S201-S204 in the first embodiment are referred to, or the steps S301-S304 in the second embodiment are referenced.
  • the method further includes:
  • the network device sends third indication information to the terminal, where the third indication information is used to instruct the third terminal to perform beam management according to any one of the at least two CSI-RSs.
  • the third terminal receives the third indication information.
  • the third terminal performs beam management according to the third indication information and any one of the at least two CSI-RSs.
  • beam management includes beam calibration and beam tracking.
  • performing beam management by using the CSI-RS may include: after receiving the at least two CSI-RSs for time-frequency tracking, the terminal may observe any CSI-RS corresponding to at least two CSI-RSs. Signal strength on the beam for beam calibration and/or beam tracking. It should be noted that the beam management technology mentioned in this embodiment is prior art, and therefore, the present disclosure does not limit the specific implementation of beam management.
  • step S202 and step S501 may be sent.
  • a signaling may be sent, where the first indication information is carried in the signaling, and the third indication information is also carried, and may also be separately sent.
  • the order of execution is not limited.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • FIG. 8 is a schematic flowchart diagram of another method for transmitting a reference signal according to the present disclosure.
  • any CSI for time-frequency tracking may be used.
  • the RS is configured as a pilot resource obtained by the terminal or other terminal as channel state information.
  • the steps S201-S204 in the first embodiment are referred to, or the steps S301-S304 in the second embodiment are referenced.
  • the method further includes:
  • the network device sends fourth indication information to the terminal, where the fourth indication information is used to indicate that the fourth terminal acquires channel state information according to any one of the at least two CSI-RSs.
  • the fourth terminal of the opposite end receives the fourth indication information.
  • the fourth terminal acquires channel state information according to the fourth indication information and any CSI-RS of the at least two CSI-RSs.
  • the channel state information is information that can reflect the channel state, such as a Precoding Matrix Indicator (PMI), a Rank Indication (RI), a Channel Quality Indicator (CQI), and the like.
  • the CQI is used to indicate the channel quality of the Physical Downlink Shared Channel (PDSCH)
  • the RI is used to indicate the effective data layer of the PDSCH
  • the PMI is used to indicate the index of the codebook set.
  • acquiring the channel state information by using the CSI-RS may include: after receiving the at least two CSI-RSs for time-frequency tracking, the terminal may observe any CSI-RS of the at least two CSI-RSs. Corresponding to the signal strength on the beam to obtain channel state information.
  • step S202 and step S601 may be sent.
  • a signaling may be sent, where the first indication information is carried in the signaling, and the fourth indication information is also carried, and may also be separately sent.
  • the order of execution is not limited.
  • channel state information acquisition technology mentioned in this embodiment is a prior art. Therefore, the specific implementation of the channel state information acquisition is not limited in the present disclosure.
  • Embodiment 1 or Embodiment 2 may be combined with any subsequent Embodiment 3 to Embodiment 5, that is, using CSI for time-frequency tracking.
  • the RS can also implement at least one of the applications such as rate matching, beam management, and channel state information acquisition, which are not limited herein. It should be noted that although the present disclosure provides only three uses, functions that can be implemented by the CSI-RS for time-frequency tracking provided by the present disclosure are all within the scope of the present disclosure.
  • first terminal, the second terminal, the third terminal, and the fourth terminal in the disclosure may be the same terminal or different terminals, which is not limited in this disclosure. It should be noted that the first terminal in the first embodiment and the second embodiment may also be replaced with other terminals, which is not limited herein.
  • the present disclosure does not limit the sequence of the above steps performed by the network device and the terminal.
  • the order of execution of the above steps should be determined by its function and internal logic, that is, the size of the sequence of the above steps should not be implemented in the embodiment of the present disclosure. Form any limit.
  • each of the foregoing network devices or terminals includes a hardware structure and/or a software module corresponding to each function.
  • the present disclosure can be implemented in a combination of hardware or hardware and computer software in combination with the algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present disclosure.
  • the embodiment of the present disclosure may divide the function module into the network device and the terminal according to the foregoing method example.
  • each function module may be divided according to each function, or two or more functions may be integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the modules in the embodiments of the present disclosure is schematic, and only one logical function is divided, and the actual implementation may have another division manner.
  • FIG. 9 is a schematic diagram of a possible configuration of a network device provided by the present disclosure.
  • the network device may include: determining unit 701, sending Unit 702, wherein:
  • the determining unit 701 is configured to support the network device to execute S201 and S301 shown in FIG. 2 .
  • the sending unit 702 is configured to support the network device to perform S202, S302 in FIG. 2, S401 in FIG. 6, S501 in FIG. 7, and step S601 in FIG.
  • the network device further includes a selecting unit 703 for supporting the network device to implement the selection process of selecting the required pilot signal according to a predetermined rule as described above.
  • FIG. 10 shows a schematic diagram of a simplified base station structure.
  • the base station includes a 801 part and an 802 part.
  • the 801 part is mainly used for the transmission and reception of radio frequency signals and the conversion of radio frequency signals and baseband signals; the 802 part is mainly used for baseband processing and control of base stations.
  • Section 801 can be generally referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver.
  • the 802 portion is typically the control center of the base station and may generally be referred to as a processing unit for controlling the base station to perform the steps performed above with respect to the network device. For details, please refer to the description of the relevant part above.
  • the transceiver unit of the 801 part which may also be called a transceiver, or a transceiver, etc., includes an antenna and a radio frequency unit, wherein the radio frequency unit is mainly used for radio frequency processing.
  • the device for implementing the receiving function in the 801 part may be regarded as a receiving unit
  • the device for implementing the transmitting function may be regarded as a transmitting unit, that is, the 801 portion includes a receiving unit and a transmitting unit.
  • the receiving unit may also be referred to as a receiver, a receiver, or a receiving circuit, etc.
  • the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit or the like.
  • the 802 portion may include one or more boards, each of which may include one or more processors and one or more memories for reading and executing programs in the memory to implement baseband processing functions and for base stations control. If multiple boards exist, the boards can be interconnected to increase processing power. As an optional implementation manner, multiple boards share one or more processors, or multiple boards share one or more memories, or multiple boards share one or more processes at the same time.
  • the memory and the processor may be integrated or independently.
  • the 801 portion and the 802 portion may be integrated or may be independently arranged.
  • all the functions in the 802 part may be implemented in one chip, or may be partially integrated in one chip to realize another part of the function integration in another one or more chips, which is not limited in the disclosure.
  • the processing unit is configured to perform the steps performed by the network device in S201, S203 shown in FIG. 2, and/or other in the present disclosure.
  • the transceiver unit is configured to perform the steps performed by the network device in S202, S204 in FIG. 2, and/or other steps in the disclosure.
  • the transceiver unit is configured to perform the steps performed by the network device in S401 in FIG. 6, and/or other steps in the disclosure.
  • the transceiver unit is configured to perform the steps performed by the network device in S501 in FIG. 7, and/or other steps in the disclosure.
  • transceiver unit is configured to perform the steps performed by the network device in S601 in FIG. 8, and/or other steps in the disclosure.
  • the processing unit is configured to perform the steps performed by the network device in S301 of FIG. 5, and/or other steps in the disclosure.
  • the transceiver unit is configured to perform the steps performed by the network device in S302 of FIG. 5, and/or other steps in the disclosure.
  • the transceiver unit is configured to perform the steps performed by the network device in S401 in FIG. 6, and/or other steps in the disclosure.
  • the transceiver unit is configured to perform the steps performed by the network device in S501 in FIG. 7, and/or other steps in the disclosure.
  • transceiver unit is configured to perform the steps performed by the network device in S601 in FIG. 8, and/or other steps in the disclosure.
  • FIG. 11 is a schematic diagram of a possible structure of a terminal provided by the present disclosure.
  • the terminal may include: a receiving unit 901 and a determining unit 902. ,among them:
  • the receiving unit 901 is configured to support the terminal to receive the indication information, the reference signal, and the data sent by the network side, and to support the terminal to execute S304 in FIG. 5.
  • the determining unit 902 is configured to support the terminal to execute S204 in FIG. 2, and S303 in FIG. 5.
  • the terminal further includes: a time-frequency tracking unit 903, a rate matching unit 904, a beam management unit 905, and a channel detecting unit 906, where:
  • the time-frequency tracking unit 903 is configured to support the terminal to execute S305 shown in FIG. 5.
  • the rate matching unit 904 is configured to support the terminal to execute S402 shown in FIG. 6.
  • the beam management unit 905 is configured to support the terminal to execute S502 shown in FIG. 7.
  • the channel detecting unit 906 is configured to support the terminal to execute S602 shown in FIG. 8.
  • the embodiment of the present disclosure further provides a terminal under the adopted integrated unit.
  • Figure 12 shows a simplified schematic diagram of the terminal structure. It is convenient for understanding and illustration.
  • the terminal uses a mobile phone as an example.
  • the terminal includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used for processing communication protocols and communication data, and controlling terminals, executing software programs, processing data of software programs, and the like.
  • Memory is primarily used to store software programs and data.
  • the RF circuit is mainly used for the conversion of the baseband signal and the RF signal and the processing of the RF signal.
  • the antenna is mainly used to transmit and receive RF signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc.
  • touch screens touch screens
  • display screens keyboards
  • etc. are primarily used to receive user input data and output data to the user. It should be noted that some types of terminals may not have input and output devices.
  • the memory and the processor may be integrated or independently.
  • the processor When the data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal, and then sends the radio frequency signal to the outside through the antenna in the form of electromagnetic waves.
  • the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
  • the memory may also be referred to as a storage medium or a storage device or the like.
  • the memory may be independent of the processor settings, or may be integrated with the processor, and the embodiment of the present disclosure does not limit this.
  • the antenna and the radio frequency circuit having the transceiving function can be regarded as the transceiving unit of the terminal, and the processor having the processing function is regarded as the processing unit of the terminal.
  • the terminal includes a transceiver unit 1001 and a processing unit 1002.
  • the transceiver unit may also be referred to as a transceiver (including a transmitter and/or receiver), a transceiver, a transceiver, and the like.
  • the processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, and the like.
  • the device for implementing the receiving function in the transceiver unit 1001 can be regarded as a receiving unit, and the device for implementing the sending function in the transceiver unit 1001 is regarded as a sending unit, that is, the transceiver unit 1001 includes a receiving unit and a sending unit.
  • the transceiver unit may also be referred to as a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may also be referred to as a receiver, a receiver, or a receiving circuit or the like.
  • the transmitting unit may also be referred to as a transmitter, a transmitter, or a transmitting circuit, and the like.
  • the transceiver unit 1001 and the processing unit 1002 may be integrated or independently.
  • all the functions in the processing unit 1002 may be implemented in one chip, or may be partially integrated into one chip to implement another part of the function integration in another one or more chips, which is not limited in the disclosure.
  • the transceiving unit 1001 is configured to perform the steps of the terminal performing information transceiving, and/or other steps in the present disclosure.
  • Processing unit 1002 is operative to perform S204, S205, and/or other steps in the present disclosure in FIG.
  • processing unit 1002 is configured to perform S402 in FIG. 6, and/or other steps in the present disclosure.
  • processing unit 1002 is configured to perform S502 in FIG. 7, and/or other steps in the present disclosure.
  • processing unit 1002 is configured to perform S602 in FIG. 8, and/or other steps in the present disclosure.
  • the transceiving unit 1001 is configured to support the terminal to perform S304 in FIG. 5, and/or other steps in the present disclosure.
  • Processing unit 1002 is for performing S303 in FIG. 5, and/or other steps in the present disclosure.
  • processing unit 1002 is configured to perform S402 in FIG. 6, and/or other steps in the present disclosure.
  • processing unit 1002 is configured to perform S502 in FIG. 7, and/or other steps in the present disclosure.
  • processing unit 1002 is configured to perform S602 in FIG. 8, and/or other steps in the present disclosure.
  • the processor mentioned above may be a processor or a general term for multiple processing elements.
  • the processor is a central processing unit (CPU), may be an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present disclosure.
  • ASIC application specific integrated circuit
  • DSPs digital signal processors
  • FPGAs field programmable gate arrays
  • the processor can perform various functions of the network function node by running or executing a software program stored in the memory and calling data stored in the memory.
  • the above memory may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or a device that can store information and instructions.
  • Other types of dynamic storage devices may also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage.
  • EEPROM electrically erasable programmable read-only memory
  • CD-ROM compact disc read-only memory
  • Optical disc storage including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.
  • magnetic disk storage media or other magnetic storage devices or capable of carrying or storing desired program code in the form of instructions or data structures and capable of Any other medium accessed by a computer, but is not limited thereto.
  • the memory can exist independently or be connected to the processor via a communication bus.
  • the memory can also be integrated with the processor.
  • the memory is used to store a software program that executes the solution provided by
  • embodiments of the present disclosure can be provided as a method, system, or computer program product.
  • embodiments of the present disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware aspects.
  • embodiments of the present disclosure may take the form of a computer program product embodied on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • Embodiments of the present disclosure are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG.
  • These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un appareil utilisés dans l'émission de signaux de référence. Le procédé consiste : à déterminer des premières informations d'indication utilisées pour indiquer à un premier terminal une ressource temps-fréquence d'au moins deux signaux de référence d'informations d'état de canal (CSI-RS), lesdits au moins deux CSI-RS étant utilisés pour un suivi temps-fréquence ; et à envoyer les premières informations d'indication au premier terminal.
PCT/CN2018/098289 2017-08-08 2018-08-02 Procédé et appareil utilisés dans l'émission de signaux de référence WO2019029426A1 (fr)

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