WO2020142899A1 - 下行数据接收方法、发送方法、装置和储存介质 - Google Patents

下行数据接收方法、发送方法、装置和储存介质 Download PDF

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Publication number
WO2020142899A1
WO2020142899A1 PCT/CN2019/070847 CN2019070847W WO2020142899A1 WO 2020142899 A1 WO2020142899 A1 WO 2020142899A1 CN 2019070847 W CN2019070847 W CN 2019070847W WO 2020142899 A1 WO2020142899 A1 WO 2020142899A1
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WO
WIPO (PCT)
Prior art keywords
antenna panel
terminal
downlink data
pdcch
base station
Prior art date
Application number
PCT/CN2019/070847
Other languages
English (en)
French (fr)
Inventor
李明菊
Original Assignee
北京小米移动软件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to RU2021121818A priority Critical patent/RU2763399C1/ru
Priority to JP2021539021A priority patent/JP7333403B2/ja
Priority to CN202111136665.1A priority patent/CN113873669B/zh
Priority to PCT/CN2019/070847 priority patent/WO2020142899A1/zh
Priority to SG11202107517UA priority patent/SG11202107517UA/en
Priority to US17/421,374 priority patent/US20220070904A1/en
Priority to KR1020217024690A priority patent/KR20210109619A/ko
Priority to CN201980000045.XA priority patent/CN109891993B/zh
Priority to EP19908238.9A priority patent/EP3911088A4/en
Priority to BR112021013443-3A priority patent/BR112021013443A2/pt
Publication of WO2020142899A1 publication Critical patent/WO2020142899A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
    • 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
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
    • 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
    • H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
    • 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
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to a downlink data receiving method, transmitting method, device, and storage medium.
  • base stations and terminals can use beams to send and receive information.
  • the control signaling and service data exchanged between the base station and the terminal can be transmitted and received using a beam.
  • the base station can separately send downlink data to the terminal through different antenna panels, that is, send downlink data to the terminal through different transmit beams.
  • the terminal cannot accurately determine which receiving beam is used to receive the downlink data sent by the base station, thereby causing the terminal to receive downlink data in error.
  • Embodiments of the present disclosure provide a downlink data receiving method, sending method, device, and storage medium.
  • the technical solution is as follows:
  • a method for receiving downlink data includes:
  • the terminal receives the first DCI (Downlink Control Information) carried on the first PDCCH (Physical Downlink Control Channel) sent by the base station through the first antenna panel.
  • the first DCI is used to schedule the The base station sends downlink data to the terminal;
  • the terminal selects a default receive beam, the default receive beam is that the terminal is receiving the downlink data
  • the terminal uses the default receive beam to receive the downlink data.
  • the terminal selecting the default receive beam includes:
  • the terminal determines a second antenna panel used by the base station to send the downlink data
  • the terminal determines the default reception beam according to the second antenna panel, and the default reception beam is a reception beam used by the terminal when receiving the second PDCCH from the second antenna panel.
  • the first antenna panel and the second antenna panel are the same antenna panel
  • the terminal determining the second antenna panel used by the base station to send the downlink data includes:
  • the terminal determines a target CORESET (Control Resource Set, control resource set) used by the first PDCCH;
  • the terminal determines, according to the CORESET configuration information, the antenna panel corresponding to the target CORESET as the first antenna panel used by the base station to send the first PDCCH; wherein, the CORESET configuration information includes using CORESET The identification information of the antenna panel that transmits the PDCCH;
  • the terminal determines the first antenna panel as the second antenna panel.
  • the terminal determining the second antenna panel used by the base station to send the downlink data includes:
  • the terminal determines the second antenna panel according to the antenna panel indication information carried in the first DCI; wherein, the antenna panel indication information is used to instruct the base station to use the first Two antenna panels.
  • the second PDCCH is the PDCCH sent by the CORESET with the smallest number among the CORESETs sent by the second antenna panel in the latest scheduling unit that received the PDCCH from the second antenna panel.
  • the second antenna panel and the first antenna panel are the same antenna panel
  • the terminal selecting the default receiving beam includes:
  • the terminal determines the reception beam used for receiving the first PDCCH as the default reception beam.
  • a method for sending downlink data includes:
  • the base station sends a first PDCCH to the terminal through the first antenna panel to carry the first DCI, and the first DCI is used to schedule the base station to send downlink data to the terminal;
  • the base station sends the downlink data to the terminal through the second antenna panel, so that the terminal uses the default receive beam to receive the downlink data.
  • the default receive beam is when the terminal receives and the downlink data comes from The receive beam used in the second PDCCH of the same antenna panel.
  • the first antenna panel and the second antenna panel are the same antenna panel
  • the first antenna panel and the second antenna panel are two different antenna panels.
  • the method further includes:
  • the base station sends CORESET configuration information to the terminal, where the CORESET configuration information includes identification information of an antenna panel that uses CORESET for PDCCH transmission, so that the terminal determines that the base station sends the first according to the CORESET configuration information
  • the first DCI carries antenna panel indication information
  • the antenna panel indication information is used to instruct the second antenna panel used by the base station to send the downlink data.
  • a downlink data receiving apparatus which is applied to a terminal, and the apparatus includes:
  • the control information receiving module is configured to receive the first DCI carried on the first PDCCH sent by the base station through the first antenna panel, where the first DCI is used to schedule the base station to send downlink data to the terminal;
  • the receiving beam selection module is configured to select a default receiving beam when the terminal cannot determine a target receiving beam for receiving the downlink data according to the first DCI, the default receiving beam is that the terminal is receiving A receive beam used when the downlink data comes from the second PDCCH of the same antenna panel;
  • the downlink data receiving module is configured to receive the downlink data using the default receive beam.
  • the receiving beam selection module includes:
  • An antenna panel determination unit configured to determine a second antenna panel used by the base station to send the downlink data
  • a receiving beam determining unit configured to determine the default receiving beam according to the second antenna panel, the default receiving beam is used by the terminal when receiving the second PDCCH from the second antenna panel Receive beam.
  • the first antenna panel and the second antenna panel are the same antenna panel
  • the antenna panel determination unit is configured to:
  • the CORESET configuration information determine the antenna panel corresponding to the target CORESET as the first antenna panel used by the base station to transmit the first PDCCH; wherein, the CORESET configuration information includes using CORESET for PDCCH transmission
  • the first antenna panel is determined to be the second antenna panel.
  • the antenna panel determining unit is configured to:
  • the antenna panel indication information is used to instruct the second antenna panel used by the base station to send the downlink data .
  • the second PDCCH is the PDCCH sent by the CORESET with the smallest number among the CORESETs sent by the second antenna panel in the latest scheduling unit that received the PDCCH from the second antenna panel.
  • the second antenna panel and the first antenna panel are the same antenna panel
  • the receiving beam selection module is configured to:
  • a downlink data transmission device which is applied to a base station, and the device includes:
  • a control information sending module configured to send a first PDCCH carrying a first DCI to the terminal through the first antenna panel, the first DCI is used to schedule the base station to send downlink data to the terminal;
  • the downlink data sending module is configured to send the downlink data to the terminal through the second antenna panel, so that the terminal uses the default receive beam to receive the downlink data, and the default receive beam is the terminal receiving and The downlink data comes from the receive beam used when the second PDCCH of the same antenna panel.
  • the first antenna panel and the second antenna panel are the same antenna panel
  • the first antenna panel and the second antenna panel are two different antenna panels.
  • the configuration information sending module is configured to send CORESET configuration information to the terminal, where the CORESET configuration information includes identification information of the antenna panel sent by PDCCH using CORESET, so that the terminal according to the CORESET configuration information Determining the first antenna panel used by the base station to send the first PDCCH, and determining the first antenna panel as the second antenna panel.
  • the first DCI carries antenna panel indication information
  • the antenna panel indication information is used to instruct the second antenna panel used by the base station to send the downlink data.
  • a downlink data receiving apparatus which is applied to a terminal, and the apparatus includes:
  • a memory for storing executable instructions of the processor
  • the processor is configured to:
  • a default receiving beam is selected, the default receiving beam is that the terminal receives the downlink data from the same antenna The receive beam used in the second PDCCH of the panel;
  • the default receiving beam is used to receive the downlink data.
  • a downlink data transmission device which is applied to a base station, and the device includes:
  • a memory for storing executable instructions of the processor
  • the processor is configured to:
  • the default receive beam is that the terminal is receiving the downlink data from the same antenna panel
  • the second PDCCH when using the receive beam.
  • a non-transitory computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the steps of the method according to the first aspect, Or implement the steps of the method according to the second aspect.
  • the terminal After the terminal receives the first DCI carried on the first PDCCH sent by the base station through the first antenna panel to schedule the base station to send downlink data to the terminal, if the terminal cannot determine the target for receiving downlink data according to the first DCI For the receive beam, the terminal selects the default receive beam to receive the downlink data, where the default receive beam is the receive beam used by the terminal when receiving the second PDCCH from the same antenna panel as the downlink data.
  • the technical solution provided by the embodiment of the present disclosure uses the receive beam used when receiving the second PDCCH from the same antenna panel as the downlink data as the default receive beam, thereby giving an accurate default receive beam to receive the downlink data, thereby improving The accuracy with which the terminal receives downlink data.
  • Fig. 1 is a schematic diagram of a network architecture according to an exemplary embodiment
  • Fig. 2 is a flow chart showing a method for receiving downlink data according to an exemplary embodiment
  • Fig. 3 is a flow chart showing a method for receiving downlink data according to another exemplary embodiment
  • Fig. 4 is a flow chart showing a method for receiving downlink data according to another exemplary embodiment
  • Fig. 5 is a flow chart showing a method for receiving downlink data according to another exemplary embodiment
  • Fig. 6 is a block diagram of a downlink data receiving apparatus according to an exemplary embodiment
  • Fig. 7 is a block diagram of a downlink data receiving apparatus according to another exemplary embodiment.
  • Fig. 8 is a block diagram of a device for sending downlink data according to an exemplary embodiment
  • Fig. 9 is a block diagram of a device for sending downlink data according to another exemplary embodiment.
  • Fig. 10 is a schematic structural diagram of a terminal according to an exemplary embodiment
  • Fig. 11 is a schematic structural diagram of a base station according to an exemplary embodiment.
  • the network architecture and business scenarios described in the embodiments of the present disclosure are to more clearly explain the technical solutions of the embodiments of the present disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure.
  • Those of ordinary skill in the art may know that as network architecture And the emergence of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.
  • Fig. 1 is a schematic diagram of a network architecture according to an exemplary embodiment.
  • the network architecture may include: a base station 110 and a terminal 120.
  • the base station 110 is deployed in the access network.
  • the access network in the 5G NR system can be called NG-RAN (New Generation-Radio Access Network, a new generation wireless access network).
  • the base station 110 and the terminal 120 communicate with each other through some air interface technology, for example, they can communicate with each other through cellular technology.
  • the base station 110 is a device deployed in an access network to provide a wireless communication function for the terminal 120.
  • the base station 110 may include various forms of macro base stations, micro base stations, relay stations, access points, and so on.
  • the names of devices with base station functions may be different.
  • gNodeB in a 5G NR system
  • gNB gNodeB
  • the name "base station” may change.
  • the above devices that provide a wireless communication function for the terminal 120 are collectively referred to as a base station.
  • the number of terminals 120 is usually multiple, and one or more terminals 120 may be distributed in the cell managed by each base station 110.
  • the terminal 120 may include various hand-held devices with wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (User Equipment, UE), mobile stations ( Mobile Station, MS), terminal device, etc.
  • UE User Equipment
  • MS Mobile Station
  • the "5G NR system" in the embodiments of the present disclosure may also be referred to as a 5G system or an NR system, but those skilled in the art can understand the meaning.
  • the technical solutions described in the embodiments of the present disclosure may be applicable to 5G NR systems, and may also be applicable to subsequent evolution systems of 5G NR systems.
  • the base station and the terminal can use the beam to send and receive information.
  • the base station can use a beam to send DCI and downlink data to the terminal.
  • DCI is sent through PDCCH
  • PDSCH Physical Downlink Shared Channel
  • the terminal can determine the DCI receiving beam in the following manner: the base station notifies the terminal of at least one TCI (Transmission, Configuration, Indication, transmission configuration indication) status through RRC (Radio Resource Control) signaling, including the TCI status identifier and its corresponding RS (Reference Signal) type and RS identification; if RRC signaling informs multiple TCI states, the base station then uses MAC (Medium Access Control) signaling to activate one of the multiple TCI states TCI state, the activated TCI state is the PDCCH transmission state configuration of the base station to the terminal, that is, the terminal is informed that the receive beam used when receiving DCI on the PDCCH should be the same as the receive beam used by the RS corresponding to the TCI state . After that, the terminal can receive the DCI on the PDCCH using the above-mentioned determined receiving beam.
  • TCI Transmission, Configuration, Indication, transmission configuration indication
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • the terminal can determine the receiving beam of the downlink data in the following manner: the base station notifies the terminal of multiple TCI states through RRC signaling; after that, the base station uses MAC signaling to activate several of the multiple TCI states (such as a maximum of 8) ) TCI state, and then inform the terminal through DCI which PDCI (Physical Downlink Shared Channel) is the TCI state among the activated TCI states.
  • the TCI state notified by DCI is the PDSCH transmission state configuration of the base station to the terminal, that is, the terminal is informed that the receive beam used when receiving the downlink data on the PDSCH should be the same as the receive beam used by the RS corresponding to the TCI state.
  • the terminal can receive the downlink data on the PDSCH using the above-mentioned determined receiving beam. That is, before sending downlink data to the terminal through the PDSCH, the base station first sends a DCI (marked as "first DCI") to the terminal through the PDCCH.
  • the first DCI is used to schedule the downlink data that the base station will send to the terminal, such as Indicates information such as the location of the time-frequency resource corresponding to the downlink data, the target receive beam, and so on.
  • the base station When the base station has only one antenna panel, the base station has only one beam direction during downlink transmission.
  • the base station may configure multiple CORESETs for the terminal to send PDCCH. Each CORESET comes from the same antenna panel, and the PDCCH sent by each CORESET can correspond to a different TCI state.
  • the terminal cannot determine the target receiving beam for receiving the downlink data according to the first DCI, the terminal uses the default receiving beam to receive the downlink data.
  • the default receiving beam is the latest scheduling unit (such as the last time slot) that the terminal receives the PDCCH In the above, among the CORESET used by the received PDCCH, the receive beam corresponding to the CORESET with the smallest number.
  • the base station When the base station has multiple antenna panels, if the communication between the multiple antenna panels is not an ideal backhaul line, the interactive communication between the multiple antenna panels will have a large delay. In this case, multiple antennas Each panel independently sends a PDCCH to the terminal to independently schedule the PDSCH.
  • the terminal cannot determine the target receiving beam for receiving downlink data according to the first DCI, if the terminal still receives the PDCCH in the latest scheduling unit, the CORESET used by the received PDCCH has the smallest number
  • the receiving beam corresponding to CORESET is used as the default receiving beam, and the receiving beam corresponding to the CORESET with the lowest number may not match the sending beam for sending downlink data, thereby causing an error in receiving downlink data by the terminal.
  • the PDCCH transmitted using the lowest numbered CORESET is transmitted by the antenna panel 1, and the downlink data is transmitted by the antenna panel 2. If the terminal uses the receive beam used when receiving the PDCCH transmitted by the antenna panel 1, the antenna panel 2 transmits Downstream data, which will cause the downstream data to not be successfully received.
  • the terminal after the terminal receives the first DCI carried on the first PDCCH sent by the base station through the first antenna panel to schedule the base station to send downlink data to the terminal, if the terminal cannot After determining the target receiving beam for receiving the downlink data, the terminal selects the default receiving beam to receive the downlink data, where the default receiving beam is the receiving beam used by the terminal when receiving the second PDCCH from the same antenna panel as the downlink data.
  • the technical solution provided by the embodiment of the present disclosure uses the receive beam used when receiving the second PDCCH from the same antenna panel as the downlink data as the default receive beam, thereby giving an accurate default receive beam to receive the downlink data, thereby improving The accuracy with which the terminal receives downlink data.
  • the technical solutions provided by the present disclosure will be described through several embodiments.
  • Fig. 2 is a flow chart showing a method for receiving downlink data according to an exemplary embodiment. This method can be applied to the network architecture shown in FIG. 1. The method may include the following steps (201-204).
  • step 201 the base station sends the first PDCCH carrying the first DCI to the terminal through the first antenna panel.
  • the base station has multiple antenna panels, and the base station can send DCI and downlink data to the terminal through the multiple antenna panels.
  • the above multiple antenna panels may belong to the same TRP (Transmitter Receiver Point), or may belong to multiple different TRPs. That is, a base station may have one or more TRPs, and each TRP may have one or more antenna panels, and different antenna panels correspond to different beam directions.
  • the first DCI is used to schedule the base station to send downlink data to the terminal.
  • the first DCI is used to instruct the terminal how to receive the downlink data, such as indicating the location of the time-frequency resource corresponding to the downlink data, the target receiving beam and other information.
  • the first DCI carries receive beam indication information, and the receive beam indication information is used to indicate a target receive beam used for receiving downlink data.
  • the received beam indication information is in TCI state.
  • the base station informs the terminal of the TCI state for scheduling the PDSCH through the first DCI, that is, when the terminal receives the downlink data on the PDSCH, the receive beam used should correspond to the RS corresponding to the TCI state.
  • the receive beams used are the same.
  • the terminal can use the target receiving beam determined above to receive the downlink data on the PDSCH.
  • the first DCI may not include the receive beam indication information, for example, only include the time-frequency resource indication information, and the time-frequency resource indication information is used to indicate the time-frequency resource position corresponding to the downlink data.
  • step 202 the base station sends downlink data to the terminal through the second antenna panel.
  • the first antenna panel and the second antenna panel are the same antenna panel; or, the first antenna panel and the second antenna panel are two different antenna panels. That is, the base station may use the same antenna panel to send the first DCI and downlink data, or may use two different antenna panels to send the first DCI and downlink data respectively.
  • the above downlink data may be service data, and the service data refers to data related to the service.
  • the content contained in the business data may also be different.
  • step 203 if the terminal cannot determine the target receiving beam for receiving downlink data according to the first DCI, the terminal selects the default receiving beam.
  • the terminal may select the default Receive beam.
  • the terminal when the time interval between the terminal receiving the first DCI and the downlink data is less than the preset duration, the terminal has no time to parse the receive beam indication information in the first DCI, and the terminal cannot determine the target for receiving the downlink data at this time For receiving beams, the terminal can select the default receiving beam.
  • the above-mentioned default reception beam is the reception beam used by the terminal when receiving the second PDCCH from the same antenna panel as the downlink data.
  • the base station has the following two antenna panels: Panel#0 and Panel#1.
  • the base station sends downlink data to the terminal through Panel#1.
  • the base station also sends the second PDCCH to the terminal through the Panel#1.
  • the receive beam used in the second PDCCH is used as the default receive beam.
  • the terminal after the terminal receives the first DCI carried on the first PDCCH, if the terminal cannot determine the target receiving beam for receiving downlink data according to the first DCI, the terminal first determines the base station used to send the downlink data The second antenna panel, and then a default reception beam is determined according to the second antenna panel, and the default reception beam is a reception beam used by the terminal when receiving the second PDCCH from the second antenna panel.
  • the method adopted by the terminal to determine the second antenna panel used by the base station to send downlink data is not limited.
  • the terminal may determine the second antenna panel used by the base station to send downlink data according to the CORESET configuration information.
  • the second antenna panel used by the base station to send downlink data may be determined from the information carried by the first DCI.
  • step 204 the terminal uses the default receive beam to receive downlink data.
  • the terminal may use the default receiving beam to receive the downlink data sent by the base station. Since the default receiving beam has received information from the second antenna panel, when the default receiving beam is used to receive the downlink data from the second antenna panel, no error occurs, and accurate reception of downlink data can be ensured.
  • the terminal after the terminal receives the first DCI carried on the first PDCCH sent by the base station through the first antenna panel to schedule the base station to send downlink data to the terminal, if the terminal If the first DCI cannot determine the target receive beam for receiving downlink data, the terminal selects the default receive beam to receive downlink data, where the default receive beam is used by the terminal when receiving the second PDCCH from the same antenna panel as the downlink data Receiving beam.
  • the technical solution provided by the embodiment of the present disclosure uses the receive beam used when receiving the second PDCCH from the same antenna panel as the downlink data as the default receive beam, thereby giving an accurate default receive beam to receive the downlink data, thereby improving The accuracy with which the terminal receives downlink data.
  • the terminal can use the following Figure 3 The method described in the embodiment determines the default receiving beam.
  • Fig. 3 is a flow chart showing a method for receiving downlink data according to another exemplary embodiment. This method can be applied to the network architecture shown in FIG. 1. The method may include the following steps (301-307).
  • step 301 the base station sends the first PDCCH carrying the first DCI to the terminal through the first antenna panel.
  • the first DCI is used to schedule the base station to send downlink data to the terminal.
  • step 302 the base station sends downlink data to the terminal through the second antenna panel.
  • the first antenna panel and the second antenna panel are the same antenna panel.
  • the base station has the following two antenna panels: Panel#0 and Panel#1. The base station sends the first DCI to the terminal through Panel#0, and then sends the downlink data to the terminal through the Panel#0.
  • step 303 if the terminal cannot determine the target reception beam for receiving the downlink data according to the first DCI, the terminal determines the target CORESET used by the first PDCCH.
  • the base station may configure multiple CORESETs for the terminal to send the PDCCH, and the CORESET contains information such as time-frequency resources for sending the PDCCH.
  • the base station may send the CORESET configuration information to the terminal.
  • the CORESET configuration information may include the number (ie, ID) of each CORESET configured by the base station for the terminal. The CORESET number is used to uniquely identify the CORESET, and different CORESETs have different numbers.
  • the terminal may determine which CORESET the base station uses when sending the first PDCCH according to the time-frequency resource position occupied by the first PDCCH, that is, determine the use of the first PDCCH Target CORESET.
  • step 304 according to the CORESET configuration information, the terminal determines the antenna panel corresponding to the target CORESET as the first antenna panel used by the base station to transmit the first PDCCH.
  • the CORESET configuration information includes identification information of the antenna panel that uses CORESET for PDCCH transmission.
  • the identification information of the antenna panel is used to uniquely identify the antenna panel, and different antenna panels have different identification information.
  • the CORESET configuration information includes at least one set of correspondence between CORESET and the antenna panel.
  • the CORESET configuration information sent by the base station to the terminal may include the following content: ⁇ CORESET#0 , Panel#0 ⁇ , ⁇ CORESET#1, Panel#1 ⁇ and ⁇ CORESET#2, Panel#0 ⁇ .
  • the above CORESET configuration information indicates that Panel#0 uses CORESET#0 and CORESET#2 to send the PDCCH to the terminal, and Panel#1 uses CORESET#1 to send the PDCCH to the terminal.
  • the terminal may further determine that the first PDCCH is sent by Panel#0.
  • step 305 the terminal determines the first antenna panel as the second antenna panel.
  • the terminal can determine the first antenna panel as the second antenna panel used when the base station sends downlink data. Still referring to the above example, after the terminal determines that the first PDCCH is transmitted by Panel#0, the terminal determines that the second antenna panel that the base station sends downlink data is also Panel#0.
  • step 306 the terminal determines the default receive beam according to the second antenna panel.
  • the above-mentioned default reception beam is the reception beam used by the terminal when receiving the second PDCCH from the second antenna panel.
  • the above-mentioned second PDCCH is the PDCCH sent by CORESET with the smallest number among the CORESET sent by the second antenna panel in the latest scheduling unit that received the PDCCH from the second antenna panel.
  • the above scheduling unit may be the smallest scheduling unit divided from the time domain, for example, one scheduling unit is a slot or a mini-slot.
  • the terminal needs to find the latest scheduling unit that receives the PDCCH from Panel#0, Panel#0 has the smallest number The second PDCCH sent by CORESET. If in the latest scheduling unit that received the PDCCH from Panel#0, Panel#0 only sent the PDCCH through CORESET#2, the terminal determines the PDCCH sent by Panel#0 through CORESET#2 as the second PDCCH, and uses The receiving beam receiving the second PDCCH is used as a default receiving beam.
  • the terminal determines the PDCCH sent by Panel#0 through CORESET#0 as the second PDCCH, and uses The receiving beam receiving the second PDCCH is used as a default receiving beam. If in the latest scheduling unit that received the PDCCH from Panel#0, Panel#0 transmitted the PDCCH through CORESET#0 and CORESET#2, the terminal determines the PDCCH transmitted by Panel#0 through CORESET#0 as the second PDCCH And use the receive beam receiving the second PDCCH as the default receive beam.
  • step 307 the terminal uses the default receive beam to receive downlink data.
  • the terminal may use the default receiving beam to receive the downlink data sent by the base station. Since the default receiving beam has received information from the second antenna panel, when the default receiving beam is used to receive the downlink data from the second antenna panel, no error occurs, and accurate reception of downlink data can be ensured.
  • the CORESET configuration sent by the base station to the terminal may include the identification information of the antenna panel that uses CORESET for PDCCH transmission, so that the terminal determines the antenna panel used by the base station to transmit downlink data according to the CORESET configuration information, and then selects the accurate default receive beam to receive downlink data, thereby improving the terminal The accuracy of receiving downstream data.
  • the terminal can use the following diagram The method described in the fourth embodiment determines the default receiving beam.
  • Fig. 4 is a flow chart showing a method for receiving downlink data according to another exemplary embodiment. This method can be applied to the network architecture shown in FIG. 1. The method may include the following steps (401-405).
  • step 401 the base station sends the first PDCCH carrying the first DCI to the terminal through the first antenna panel.
  • the first DCI is used to schedule the base station to send downlink data to the terminal.
  • step 402 the base station sends downlink data to the terminal through the second antenna panel.
  • the first antenna panel and the second antenna panel may be two different antenna panels.
  • the base station has the following two antenna panels: Panel#0 and Panel#1, the base station sends the first DCI to the terminal through Panel#0, the first DCI is used to schedule Panel#1 to send downlink data to the terminal, and then the base station passes the Panel #1 Send downlink data to the terminal.
  • the first antenna panel and the second antenna panel may belong to the same TRP or two different TRPs, which is not limited in the embodiment of the present disclosure.
  • step 403 if the terminal cannot determine the target reception beam for receiving downlink data according to the first DCI, the terminal determines the second antenna panel according to the antenna panel indication information carried in the first DCI.
  • the antenna panel indication information is used to instruct the second antenna panel used by the base station to send downlink data.
  • the terminal can directly know the second antenna panel used by the base station to send downlink data through the antenna panel indication information in the first DCI.
  • the first antenna panel and the second antenna panel may be two different antenna panels, so the terminal cannot directly determine the base station used to send the downlink data according to the CORESET configuration information.
  • the antenna panel indication information is carried in the first DCI, so that the terminal learns the second antenna panel used by the base station to send downlink data accordingly.
  • step 404 the terminal determines the default receive beam according to the second antenna panel.
  • the above-mentioned default reception beam is a reception beam used by the terminal when receiving the second PDCCH from the second antenna panel.
  • the above-mentioned second PDCCH is the PDCCH sent by CORESET with the smallest number among the CORESET sent by the second antenna panel in the latest scheduling unit that received the PDCCH from the second antenna panel.
  • the above-mentioned scheduling unit may be the smallest scheduling unit divided from the time domain, for example, one scheduling unit is a slot or a mini-slot.
  • the CORESET configuration information sent by the base station to the terminal may include the following content: ⁇ CORESET#0 , Panel#0 ⁇ , ⁇ CORESET#1, Panel#1 ⁇ and ⁇ CORESET#2, Panel#0 ⁇ .
  • the above CORESET configuration information indicates that Panel#0 uses CORESET#0 and CORESET#2 to send the PDCCH to the terminal, and Panel#1 uses CORESET#1 to send the PDCCH to the terminal.
  • the terminal determines that the second antenna panel sending downlink data is Panel#0 according to the antenna panel indication information in the first DCI, then the terminal needs to find the PDCCH received from Panel#0 In the most recent scheduling unit, Panel#0 sends the second PDCCH through CORESET with the smallest number. If in the latest scheduling unit that received the PDCCH from Panel#0, Panel#0 only sent the PDCCH through CORESET#2, the terminal determines the PDCCH sent by Panel#0 through CORESET#2 as the second PDCCH, and uses The receiving beam receiving the second PDCCH is used as a default receiving beam.
  • the terminal determines the PDCCH sent by Panel#0 through CORESET#0 as the second PDCCH, and uses The receiving beam receiving the second PDCCH is used as a default receiving beam. If in the latest scheduling unit that received the PDCCH from Panel#0, Panel#0 transmitted the PDCCH through CORESET#0 and CORESET#2, the terminal determines the PDCCH transmitted by Panel#0 through CORESET#0 as the second PDCCH And use the receive beam receiving the second PDCCH as the default receive beam.
  • step 405 the terminal uses the default receive beam to receive downlink data.
  • the terminal may use the default receiving beam to receive the downlink data sent by the base station. Since the default receiving beam has received information from the second antenna panel, when the default receiving beam is used to receive the downlink data from the second antenna panel, no error occurs, and accurate reception of downlink data can be ensured.
  • the DCI carried on the PDCCH sent by a certain antenna panel can schedule resources on the antenna panel to send downlink data, it can also schedule other antenna panels
  • the DCI sent by the base station to the terminal can carry antenna panel indication information to indicate the antenna panel used by the base station to send downlink data, so that the terminal selects the accurate default receive beam to receive downlink data. Thereby, the accuracy of receiving downlink data by the terminal is improved.
  • the DCI carried on the PDCCH sent by a certain antenna panel can only schedule resources on that antenna panel to send downlink data, it cannot schedule resources on other antenna panels.
  • the DCI sent by the base station to the terminal can also carry antenna panel indication information to indicate the antenna panel used by the base station to send downlink data, so that the terminal does not have to determine the base station to use the downlink data according to the CORESET configuration information. Antenna panel.
  • the terminal can also use the following The method described in the embodiment of FIG. 5 is used to determine the default receive beam.
  • Fig. 5 is a flow chart showing a method for receiving downlink data according to another exemplary embodiment. This method can be applied to the network architecture shown in FIG. 1. The method may include the following steps (501-504).
  • step 501 the base station sends the first PDCCH carrying the first DCI to the terminal through the first antenna panel.
  • the first DCI is used to schedule the base station to send downlink data to the terminal.
  • step 502 the base station sends downlink data to the terminal through the second antenna panel.
  • the first antenna panel and the second antenna panel are the same antenna panel.
  • the base station has the following two antenna panels: Panel#0 and Panel#1. The base station sends the first DCI to the terminal through Panel#0, and then sends the downlink data to the terminal through the Panel#0.
  • step 503 if the terminal cannot determine the target reception beam for receiving downlink data according to the first DCI, the terminal determines the reception beam used for receiving the first PDCCH as the default reception beam.
  • the terminal can directly use the receive beam used to receive the first PDCCH as the default reception Beam.
  • the base station configures the terminal with three CORESETs for sending PDCCH, which are CORESET#0, CORESET#1, and CORESET#2, respectively.
  • the terminal receives the first PDCCH from CORESET#2
  • the terminal directly uses the reception beam receiving the first PDCCH as the default reception beam for receiving downlink data.
  • step 504 the terminal uses the default receive beam to receive downlink data.
  • the terminal may use the default receiving beam to receive the downlink data sent by the base station. Since the default receiving beam has received information from the second antenna panel, when the default receiving beam is used to receive the downlink data from the second antenna panel, no error occurs, and accurate reception of downlink data can be ensured.
  • the terminal when the DCI carried on the PDCCH sent by a certain antenna panel can only schedule resources on the antenna panel to send downlink data, the terminal receives the After the first PDCCH used for scheduling downlink data, the receive beam used to receive the first PDCCH can be directly determined as the default receive beam, so that an accurate default receive beam is selected to receive downlink data, thereby improving the terminal's ability to receive downlink data Accuracy.
  • the description is only given from the perspective of the interaction between the terminal and the base station.
  • the above steps related to the terminal can be implemented separately as the downlink data receiving method on the terminal side, and the steps related to the base station can be implemented separately as the base station side.
  • Downlink data sending method
  • Fig. 6 is a block diagram of a downlink data receiving apparatus according to an exemplary embodiment.
  • the device has a function to realize the above-mentioned method example on the terminal side, and the function may be realized by hardware, or may be realized by hardware executing corresponding software.
  • the device may be the terminal described above or may be provided in the terminal.
  • the apparatus 600 may include: a control information receiving module 610, a receiving beam selection module 620, and a downlink data receiving module 630.
  • the control information receiving module 610 is configured to receive the first DCI carried on the first PDCCH sent by the base station through the first antenna panel, where the first DCI is used to schedule the base station to send downlink data to the terminal.
  • the receiving beam selection module 620 is configured to select a default receiving beam when the terminal cannot determine a target receiving beam for receiving the downlink data according to the first DCI, the default receiving beam is that the terminal is A receive beam used when receiving the second PDCCH from the same antenna panel as the downlink data.
  • the downlink data receiving module 630 is configured to receive the downlink data using the default receive beam.
  • the terminal after the terminal receives the first DCI carried on the first PDCCH sent by the base station through the first antenna panel to schedule the base station to send downlink data to the terminal, if the terminal If the first DCI cannot determine the target receive beam for receiving downlink data, the terminal selects the default receive beam to receive downlink data, where the default receive beam is used by the terminal when receiving the second PDCCH from the same antenna panel as the downlink data Receiving beam.
  • the technical solution provided by the embodiment of the present disclosure uses the receive beam used when receiving the second PDCCH from the same antenna panel as the downlink data as the default receive beam, thereby giving an accurate default receive beam to receive the downlink data, thereby improving The accuracy with which the terminal receives downlink data.
  • the receiving beam selection module 620 includes an antenna panel determining unit 621 and a receiving beam determining unit 622.
  • the antenna panel determining unit 621 is configured to determine the second antenna panel used by the base station to send the downlink data.
  • the receiving beam determining unit 622 is configured to determine the default receiving beam according to the second antenna panel, the default receiving beam is used by the terminal when receiving the second PDCCH from the second antenna panel Receiving beam.
  • the first antenna panel and the second antenna panel are the same antenna panel
  • the antenna panel determination unit 621 is configured to:
  • the CORESET configuration information determine the antenna panel corresponding to the target CORESET as the first antenna panel used by the base station to transmit the first PDCCH; wherein, the CORESET configuration information includes using CORESET for PDCCH transmission
  • the first antenna panel is determined to be the second antenna panel.
  • the antenna panel determination unit 621 is configured to:
  • the antenna panel indication information is used to instruct the second antenna panel used by the base station to send the downlink data .
  • the second PDCCH is the PDCCH sent by the CORESET with the smallest number among the CORESETs sent by the second antenna panel in the latest scheduling unit that received the PDCCH from the second antenna panel.
  • the second antenna panel and the first antenna panel are the same antenna panel
  • the receiving beam selection module 620 is configured to:
  • Fig. 8 is a block diagram of a device for sending downlink data according to an exemplary embodiment.
  • the device has a function to realize the above method example on the base station side, and the function may be realized by hardware, or may be realized by hardware executing corresponding software.
  • the device may be the base station described above or may be installed in the base station.
  • the apparatus 800 may include: a control information sending module 810 and a downlink data sending module 820.
  • the control information sending module 810 is configured to send a first PDCCH carrying the first DCI to the terminal through the first antenna panel, where the first DCI is used to schedule the base station to send downlink data to the terminal.
  • the downlink data sending module 820 is configured to send the downlink data to the terminal through the second antenna panel, so that the terminal uses the default receive beam to receive the downlink data, and the default receive beam is that the terminal is receiving The receive beam used when the downlink data comes from the second PDCCH of the same antenna panel.
  • the terminal after the terminal receives the first DCI carried on the first PDCCH sent by the base station through the first antenna panel to schedule the base station to send downlink data to the terminal, if the terminal If the first DCI cannot determine the target receive beam for receiving downlink data, the terminal selects the default receive beam to receive downlink data, where the default receive beam is used by the terminal when receiving the second PDCCH from the same antenna panel as the downlink data Receiving beam.
  • the technical solution provided by the embodiment of the present disclosure uses the receive beam used when receiving the second PDCCH from the same antenna panel as the downlink data as the default receive beam, thereby giving an accurate default receive beam to receive the downlink data, thereby improving The accuracy with which the terminal receives downlink data.
  • the first antenna panel and the second antenna panel are the same antenna panel; or, the first antenna panel and the second antenna panel are two Different antenna panels.
  • the apparatus 800 further includes: a configuration information sending module 830.
  • the configuration information sending module 830 is configured to send CORESET configuration information to the terminal, where the CORESET configuration information includes identification information of an antenna panel sent by PDCCH using CORESET, so that the terminal determines the CORESET configuration information according to the CORESET configuration information
  • the base station sends the first antenna panel used by the first PDCCH, and determines the first antenna panel as the second antenna panel.
  • the first DCI carries antenna panel indication information
  • the antenna panel indication information is used to instruct the base station to send The second antenna panel used for the downlink data.
  • the device provided by the above embodiment realizes its function, it is only exemplified by the division of the above functional modules.
  • the above functions can be allocated by different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • the base station and the terminal include a hardware structure and/or a software module corresponding to each function.
  • the embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driven hardware depends on the specific application of the technical solution and design constraints. A person skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solutions of the embodiments of the present disclosure.
  • An exemplary embodiment of the present disclosure also provides a downlink data receiving apparatus, which can implement the downlink data receiving method provided by the present disclosure.
  • the device may be the terminal described above or may be provided in the terminal.
  • the device includes a processor and a memory for storing executable instructions of the processor.
  • the processor is configured as:
  • a default receiving beam is selected, the default receiving beam is that the terminal receives the downlink data from the same antenna The receive beam used in the second PDCCH of the panel;
  • the default receiving beam is used to receive the downlink data.
  • the processor is further configured to:
  • the default reception beam is determined according to the second antenna panel, and the default reception beam is a reception beam used by the terminal when receiving the second PDCCH from the second antenna panel.
  • the first antenna panel and the second antenna panel are the same antenna panel
  • the processor is also configured to:
  • the CORESET configuration information determine the antenna panel corresponding to the target CORESET as the first antenna panel used by the base station to transmit the first PDCCH; wherein, the CORESET configuration information includes using CORESET for PDCCH transmission
  • the first antenna panel is determined to be the second antenna panel.
  • the processor is further configured to:
  • the antenna panel indication information is used to instruct the second antenna panel used by the base station to send the downlink data .
  • the second PDCCH is the PDCCH sent by the CORESET with the smallest number among the CORESETs sent by the second antenna panel in the latest scheduling unit that received the PDCCH from the second antenna panel.
  • the second antenna panel and the first antenna panel are the same antenna panel
  • the processor is also configured to:
  • An exemplary embodiment of the present disclosure also provides a downlink data sending apparatus, which can implement the downlink data sending method provided by the present disclosure.
  • the device may be the base station described above or may be installed in the base station.
  • the device includes a processor and a memory for storing executable instructions of the processor.
  • the processor is configured as:
  • the default receive beam is that the terminal is receiving the downlink data from the same antenna panel
  • the second PDCCH when using the receive beam.
  • the first antenna panel and the second antenna panel are the same antenna panel
  • the first antenna panel and the second antenna panel are two different antenna panels.
  • the processor is further configured to:
  • the CORESET configuration information includes identification information of an antenna panel that uses CORESET for PDCCH transmission, so that the terminal determines, according to the CORESET configuration information, that the base station sends the first PDCCH The first antenna panel, and determine the first antenna panel as the second antenna panel.
  • the first DCI carries antenna panel indication information
  • the antenna panel indication information is used to instruct the second antenna panel used by the base station to send the downlink data.
  • Fig. 10 is a schematic structural diagram of a terminal according to an exemplary embodiment.
  • the terminal 1000 includes a transmitter 1001, a receiver 1002, and a processor 1003.
  • the processor 1003 may also be a controller, which is represented as "controller/processor 1003" in FIG.
  • the terminal 1000 may further include a modem processor 1005, where the modem processor 1005 may include an encoder 1006, a modulator 1007, a decoder 1008, and a demodulator 1009.
  • the transmitter 1001 adjusts (eg, analog conversion, filtering, amplification, up-conversion, etc.) the output samples and generates an uplink signal, which is transmitted via the antenna to the base station described in the above embodiment .
  • the antenna receives the downlink signal transmitted by the base station in the above embodiment.
  • the receiver 1002 adjusts (eg, filters, amplifies, down-converts, digitizes, etc.) the signal received from the antenna and provides input samples.
  • the encoder 1006 receives service data and signaling messages to be sent on the uplink, and processes the service data and signaling messages (eg, formatting, encoding, and interleaving).
  • the modulator 1007 further processes (eg, symbol mapping and modulation) the encoded service data and signaling messages and provides output samples.
  • the demodulator 1009 processes (eg, demodulates) the input samples and provides symbol estimates.
  • the decoder 1008 processes (eg, deinterleaves and decodes) the symbol estimate and provides the decoded data and signaling messages sent to the terminal 1000.
  • the encoder 1006, the modulator 1007, the demodulator 1009, and the decoder 1008 may be implemented by a synthesized modem processor 1005. These units are processed according to the radio access technology adopted by the radio access network (for example, the access technology of LTE and other evolved systems). It should be noted that, when the terminal 1000 does not include the modem processor 1005, the above functions of the modem processor 1005 may also be completed by the processor 1003.
  • the processor 1003 controls and manages the operations of the terminal 1000, and is used to execute the processing procedure performed by the terminal 1000 in the foregoing embodiment of the present disclosure.
  • the processor 1003 is further configured to execute various steps on the terminal side in the foregoing method embodiments, and/or other steps of the technical solution described in the embodiments of the present disclosure.
  • the terminal 1000 may further include a memory 1004, and the memory 1004 is used to store program codes and data for the terminal 1000.
  • FIG. 10 only shows a simplified design of the terminal 1000.
  • the terminal 1000 may include any number of transmitters, receivers, processors, modem processors, memories, etc., and all terminals that can implement the embodiments of the present disclosure are within the protection scope of the embodiments of the present disclosure Inside.
  • Fig. 11 is a schematic structural diagram of a base station according to an exemplary embodiment.
  • the base station 1100 includes a transmitter/receiver 1101 and a processor 1102.
  • the processor 1102 may also be a controller, which is represented as "controller/processor 1102" in FIG.
  • the transmitter/receiver 1101 is used to support transmission and reception of information between the base station and the terminal in the foregoing embodiments, and to support communication between the base station and other network entities.
  • the processor 1102 performs various functions for communicating with the terminal.
  • the uplink signal from the terminal is received via the antenna, demodulated by the receiver 1101 (for example, demodulating a high-frequency signal into a baseband signal), and further processed by the processor 1102 to recover the terminal Send to business data and signaling messages.
  • the service data and signaling messages are processed by the processor 1102 and modulated by the transmitter 1101 (for example, modulating the baseband signal into a high-frequency signal) to generate a downlink signal and transmitted to the terminal via the antenna .
  • the above demodulation or modulation function may also be completed by the processor 1102.
  • the processor 1102 is further configured to execute various steps on the base station side in the foregoing method embodiments, and/or other steps of the technical solution described in the embodiments of the present disclosure.
  • the base station 1100 may further include a memory 1103, and the memory 1103 is used to store the program code and data of the base station 1100.
  • the base station 1100 may further include a communication unit 1104.
  • the communication unit 1104 is used to support the base station 1100 to communicate with other network entities (such as network devices in the core network).
  • the communication unit 1104 may be an NG-U interface for supporting communication between the base station 1100 and a UPF (User Plane Function) entity; or, the communication unit 1104 may also be an NG-U
  • the C interface is used to support the communication between the base station 1100 and the AMF (Access and Mobility Management Function) access and mobility management function entity.
  • FIG. 11 only shows a simplified design of the base station 1100.
  • the base station 1100 may include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all base stations that can implement the embodiments of the present disclosure are within the protection scope of the embodiments of the present disclosure Inside.
  • An embodiment of the present disclosure also provides a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by the processor of the terminal, the downlink data receiving method on the terminal side as described above is implemented.
  • An embodiment of the present disclosure also provides a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor of a base station, a downlink data transmission method on the base station side as described above is implemented.

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Abstract

本公开是关于一种下行数据接收方法、发送方法、装置和储存介质，属于通信技术领域。所述方法包括：终端接收基站通过第一天线面板发送的第一PDCCH上携带的第一DCI；若终端根据第一DCI无法确定出用于接收下行数据的目标接收波束，则终端选择默认接收波束，该默认接收波束是终端在接收与下行数据来自同一天线面板的第二PDCCH时所使用的接收波束；终端采用默认接收波束接收下行数据。本公开实施例提供的技术方案，将在接收与下行数据来自同一天线面板的第二PDCCH时所使用的接收波束作为默认接收波束，从而给出一个准确的默认接收波束来接收下行数据，从而提高终端接收下行数据的准确度。

Description

下行数据接收方法、发送方法、装置和储存介质 技术领域
本公开涉及通信技术领域，特别涉及一种下行数据接收方法、发送方法、装置和储存介质。
背景技术
在5G NR(New Radio，新空口)系统中，基站和终端可以使用波束(beam)收发信息。例如，基站和终端之间交互的控制信令和业务数据，都可以使用波束进行收发。
在基站有多个天线面板的情况下，基站可以通过不同的天线面板分别向终端发送下行数据，也即通过不同的发送波束分别向终端发送下行数据。此时，终端无法准确确定出采用哪个接收波束接收基站发送的下行数据，从而导致终端接收下行数据出错。
发明内容
本公开实施例提供了一种下行数据接收方法、发送方法、装置和储存介质。所述技术方案如下：
根据本公开实施例的第一方面，提供了一种下行数据接收方法，所述方法包括：
终端接收基站通过第一天线面板发送的第一PDCCH(Physical Downlink Control Channel，物理下行控制信道)上携带的第一DCI(Downlink Control Information，下行控制信息)，所述第一DCI用于调度所述基站向所述终端发送下行数据；
若所述终端根据所述第一DCI无法确定出用于接收所述下行数据的目标接收波束，则所述终端选择默认接收波束，所述默认接收波束是所述终端在接收与所述下行数据来自同一天线面板的第二PDCCH时所使用的接收波束；
所述终端采用所述默认接收波束接收所述下行数据。
可选地，所述终端选择默认接收波束，包括：
所述终端确定所述基站发送所述下行数据所使用的第二天线面板；
所述终端根据所述第二天线面板确定所述默认接收波束，所述默认接收波束是所述终端在接收来自所述第二天线面板的所述第二PDCCH时所使用的接收波束。
可选地，所述第一天线面板和所述第二天线面板为同一天线面板；
所述终端确定所述基站发送所述下行数据所使用的第二天线面板，包括：
所述终端确定所述第一PDCCH所使用的目标CORESET(Control Resource Set，控制资源集合)；
所述终端根据CORESET配置信息，将与所述目标CORESET对应的天线面板，确定为所述基站发送所述第一PDCCH所使用的所述第一天线面板；其中，所述CORESET配置信息包括使用CORESET进行PDCCH发送的天线面板的标识信息；
所述终端将所述第一天线面板确定为所述第二天线面板。
可选地，所述终端确定所述基站发送所述下行数据所使用的第二天线面板，包括：
所述终端根据所述第一DCI中携带的天线面板指示信息，确定所述第二天线面板；其中，所述天线面板指示信息用于指示所述基站发送所述下行数据所使用的所述第二天线面板。
可选地，所述第二PDCCH是接收到来自所述第二天线面板的PDCCH的最近一个调度单元中，通过所述第二天线面板发送的CORESET中编号最小的CORESET发送的PDCCH。
可选地，所述第二天线面板与所述第一天线面板为同一天线面板；
所述终端选择默认接收波束，包括：
所述终端将接收所述第一PDCCH所使用的接收波束，确定为所述默认接收波束。
根据本公开实施例的第二方面，提供了一种下行数据发送方法，所述方法包括：
基站通过第一天线面板向终端发送第一PDCCH携带第一DCI，所述第一DCI用于调度所述基站向所述终端发送下行数据；
所述基站通过第二天线面板向所述终端发送所述下行数据，以使得所述终端采用默认接收波束接收所述下行数据，所述默认接收波束是所述终端在接收 与所述下行数据来自同一天线面板的第二PDCCH时所使用的接收波束。
可选地，所述第一天线面板和所述第二天线面板为同一天线面板；
或者，
所述第一天线面板和所述第二天线面板为两个不同的天线面板。
可选地，所述方法还包括：
所述基站向所述终端发送CORESET配置信息，所述CORESET配置信息包括使用CORESET进行PDCCH发送的天线面板的标识信息，以使得所述终端根据所述CORESET配置信息确定所述基站发送所述第一PDCCH所使用的所述第一天线面板，并将所述第一天线面板确定为所述第二天线面板。
可选地，所述第一DCI中携带天线面板指示信息，所述天线面板指示信息用于指示所述基站发送所述下行数据所使用的所述第二天线面板。
根据本公开实施例的第三方面，提供了一种下行数据接收装置，应用于终端中，所述装置包括：
控制信息接收模块，被配置为接收基站通过第一天线面板发送的第一PDCCH上携带的第一DCI，所述第一DCI用于调度所述基站向所述终端发送下行数据；
接收波束选择模块，被配置为当所述终端根据所述第一DCI无法确定出用于接收所述下行数据的目标接收波束时，选择默认接收波束，所述默认接收波束是所述终端在接收与所述下行数据来自同一天线面板的第二PDCCH时所使用的接收波束；
下行数据接收模块，被配置为采用所述默认接收波束接收所述下行数据。
可选地，所述接收波束选择模块，包括：
天线面板确定单元，被配置为确定所述基站发送所述下行数据所使用的第二天线面板；
接收波束确定单元，被配置为根据所述第二天线面板确定所述默认接收波束，所述默认接收波束是所述终端在接收来自所述第二天线面板的所述第二PDCCH时所使用的接收波束。
可选地，所述第一天线面板和所述第二天线面板为同一天线面板；
所述天线面板确定单元，被配置为：
确定所述第一PDCCH所使用的目标CORESET；
根据CORESET配置信息，将与所述目标CORESET对应的天线面板，确 定为所述基站发送所述第一PDCCH所使用的所述第一天线面板；其中，所述CORESET配置信息包括使用CORESET进行PDCCH发送的天线面板的标识信息；
将所述第一天线面板确定为所述第二天线面板。
可选地，所述天线面板确定单元，被配置为：
根据所述第一DCI中携带的天线面板指示信息，确定所述第二天线面板；其中，所述天线面板指示信息用于指示所述基站发送所述下行数据所使用的所述第二天线面板。
可选地，所述第二PDCCH是接收到来自所述第二天线面板的PDCCH的最近一个调度单元中，通过所述第二天线面板发送的CORESET中编号最小的CORESET发送的PDCCH。
可选地，所述第二天线面板与所述第一天线面板为同一天线面板；
所述接收波束选择模块，被配置为：
将接收所述第一PDCCH所使用的接收波束，确定为所述默认接收波束。
根据本公开实施例的第四方面，提供了一种下行数据发送装置，应用于基站中，所述装置包括：
控制信息发送模块，被配置为通过第一天线面板向终端发送第一PDCCH携带第一DCI，所述第一DCI用于调度所述基站向所述终端发送下行数据；
下行数据发送模块，被配置为通过第二天线面板向所述终端发送所述下行数据，以使得所述终端采用默认接收波束接收所述下行数据，所述默认接收波束是所述终端在接收与所述下行数据来自同一天线面板的第二PDCCH时所使用的接收波束。
可选地，所述第一天线面板和所述第二天线面板为同一天线面板；
或者，
所述第一天线面板和所述第二天线面板为两个不同的天线面板。
可选地，配置信息发送模块，被配置为向所述终端发送CORESET配置信息，所述CORESET配置信息包括使用CORESET进行PDCCH发送的天线面板的标识信息，以使得所述终端根据所述CORESET配置信息确定所述基站发送所述第一PDCCH所使用的所述第一天线面板，并将所述第一天线面板确定为所述第二天线面板。
可选地，所述第一DCI中携带天线面板指示信息，所述天线面板指示信息 用于指示所述基站发送所述下行数据所使用的所述第二天线面板。
根据本公开实施例的第五方面，提供了一种下行数据接收装置，应用于终端中，所述装置包括：
处理器；
用于存储所述处理器的可执行指令的存储器；
其中，所述处理器被配置为：
接收基站通过第一天线面板发送的第一PDCCH上携带的第一DCI，所述第一DCI用于调度所述基站向所述终端发送下行数据；
当所述终端根据所述第一DCI无法确定出用于接收所述下行数据的目标接收波束时，选择默认接收波束，所述默认接收波束是所述终端在接收与所述下行数据来自同一天线面板的第二PDCCH时所使用的接收波束；
采用所述默认接收波束接收所述下行数据。
根据本公开实施例的第六方面，提供了一种下行数据发送装置，应用于基站中，所述装置包括：
处理器；
用于存储所述处理器的可执行指令的存储器；
其中，所述处理器被配置为：
通过第一天线面板向终端发送第一PDCCH携带第一DCI，所述第一DCI用于调度所述基站向所述终端发送下行数据；
通过第二天线面板向所述终端发送所述下行数据，以使得所述终端采用默认接收波束接收所述下行数据，所述默认接收波束是所述终端在接收与所述下行数据来自同一天线面板的第二PDCCH时所使用的接收波束。
根据本公开实施例的第七方面，提供了一种非临时性计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现如第一方面所述方法的步骤，或者实现如第二方面所述方法的步骤。
本公开实施例提供的技术方案可以包括以下有益效果：
终端在接收到基站通过第一天线面板发送的用于调度基站向终端发送下行数据的第一PDCCH上携带的第一DCI之后，如果终端根据该第一DCI无法确定出用于接收下行数据的目标接收波束，则终端选择默认接收波束接收下行数据，其中，默认接收波束是终端在接收与下行数据来自同一天线面板的第二 PDCCH时所使用的接收波束。本公开实施例提供的技术方案，将在接收与下行数据来自同一天线面板的第二PDCCH时所使用的接收波束作为默认接收波束，从而给出一个准确的默认接收波束来接收下行数据，从而提高终端接收下行数据的准确度。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。
图1是根据一示例性实施例示出的一种网络架构的示意图；
图2是根据一示例性实施例示出的一种下行数据接收方法的流程图；
图3是根据另一示例性实施例示出的一种下行数据接收方法的流程图；
图4是根据另一示例性实施例示出的一种下行数据接收方法的流程图；
图5是根据另一示例性实施例示出的一种下行数据接收方法的流程图；
图6是根据一示例性实施例示出的一种下行数据接收装置的框图；
图7是根据另一示例性实施例示出的一种下行数据接收装置的框图；
图8是根据一示例性实施例示出的一种下行数据发送装置的框图；
图9是根据另一示例性实施例示出的一种下行数据发送装置的框图；
图10是根据一示例性实施例示出的一种终端的结构示意图；
图11是根据一示例性实施例示出的一种基站的结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
本公开实施例描述的网络架构以及业务场景是为了更加清楚地说明本公开实施例的技术方案，并不构成对本公开实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本公开实施 例提供的技术方案对于类似的技术问题，同样适用。
图1是根据一示例性实施例示出的一种网络架构的示意图。该网络架构可以包括：基站110和终端120。
基站110部署在接入网中。5G NR系统中的接入网可以称为NG-RAN(New Generation-Radio Access Network，新一代无线接入网)。基站110与终端120之间通过某种空口技术互相通信，例如可以通过蜂窝技术相互通信。
基站110是一种部署在接入网中用以为终端120提供无线通信功能的装置。基站110可以包括各种形式的宏基站，微基站，中继站，接入点等等。在采用不同的无线接入技术的系统中，具备基站功能的设备的名称可能会有所不同，例如在5G NR系统中，称为gNodeB或者gNB。随着通信技术的演进，“基站”这一名称可能会变化。为方便描述，本公开实施例中，上述为终端120提供无线通信功能的装置统称为基站。
终端120的数量通常为多个，每一个基站110所管理的小区内可以分布一个或多个终端120。终端120可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备，以及各种形式的用户设备(User Equipment，UE)，移动台(Mobile Station，MS)，终端设备(terminal device)等等。为方便描述，本公开实施例中，上面提到的设备统称为终端。
本公开实施例中的“5G NR系统”也可以称为5G系统或者NR系统，但本领域技术人员可以理解其含义。本公开实施例描述的技术方案可以适用于5G NR系统，也可以适用于5G NR系统后续的演进系统。
在上文已经介绍，在5G NR系统中，基站和终端可以使用波束收发信息。对于下行传输来说，基站可以使用波束向终端发送DCI和下行数据。其中，DCI通过PDCCH发送，下行数据通过PDSCH(Physical Downlink Shared Channel，物理下行共享信道)发送。
终端可以通过下述方式确定DCI的接收波束：基站通过RRC(Radio Resource Control，无线资源控制)信令通知终端至少一个TCI(Transmission Configuration Indication，传输配置指示)状态，包括TCI状态的标识及其对应的RS(Reference Signal，参考信号)类型和RS标识；若RRC信令告知了多个TCI状态，则基站再使用MAC(Medium Access Control，介质访问控制) 信令激活上述多个TCI状态中的一个TCI状态，该被激活的TCI状态即为基站给该终端的PDCCH的传输状态配置，即告知终端接收PDCCH上的DCI时使用的接收波束应当与接收该TCI状态对应的RS所使用的接收波束相同。之后，终端便可以使用上述确定的接收波束，接收PDCCH上的DCI。
终端可以通过下述方式确定下行数据的接收波束：基站通过RRC信令将多个TCI状态通知给终端；之后，基站再使用MAC信令激活上述多个TCI状态中的若干个(比如最多8个)TCI状态，然后再通过DCI告知终端用于PDSCH(Physical Downlink Shared Channel，物理下行共享信道)的是上述被激活的若干个TCI状态中的哪一个TCI状态。该通过DCI告知的TCI状态即为基站给该终端的PDSCH的传输状态配置，即告知终端接收PDSCH上的下行数据时使用的接收波束应当与接收该TCI状态对应的RS所使用的接收波束相同。之后，终端便可以使用上述确定的接收波束，接收PDSCH上的下行数据。也即，基站在通过PDSCH向终端发送下行数据之前，首先会通过PDCCH向终端发送一个DCI(记为“第一DCI”)，该第一DCI用于调度基站将要向终端发送的下行数据，如指示该下行数据对应的时频资源位置、目标接收波束等信息。
当基站只有一个天线面板时，基站在下行传输时只有一个波束方向。基站可以给终端配置多个CORESET用于发送PDCCH。其中，每个CORESET均来自同一个天线面板，每个CORESET发送的PDCCH可以对应不同的TCI状态。当终端根据第一DCI无法确定出用于接收下行数据的目标接收波束时，终端使用默认接收波束接收下行数据，该默认接收波束是终端接收到PDCCH的最近一个调度单元(如最近一个时隙)内，上述接收到的PDCCH所使用的CORESET中，编号最小的CORESET对应的接收波束。
当基站有多个天线面板时，若多个天线面板之间通信不是理想的回程线路(backhaul)，则多个天线面板之间的交互通信会有较大的时延，此时，多个天线面板各自独立给终端发送PDCCH，以独立进行PDSCH的调度。此时，当终端根据第一DCI无法确定出用于接收下行数据的目标接收波束时，若仍将接收到PDCCH的最近一个调度单元内，上述接收到的PDCCH所使用的CORESET中，编号最小的CORESET对应的接收波束作为默认接收波束，则可能出现编号最小的CORESET对应的接收波束与发送下行数据的发送波束不匹配的情况，从而导致终端接收下行数据出错。例如，使用编号最小的CORESET发送的PDCCH是由天线面板1发送的，而下行数据是由天线面板2发送的，如果 终端使用接收天线面板1发送的PDCCH时使用的接收波束来接收天线面板2发送的下行数据，这会导致下行数据无法成功接收。
在本公开提供的技术方案中，终端在接收到基站通过第一天线面板发送的用于调度基站向终端发送下行数据的第一PDCCH上携带的第一DCI之后，如果终端根据该第一DCI无法确定出用于接收下行数据的目标接收波束，则终端选择默认接收波束接收下行数据，其中，默认接收波束是终端在接收与下行数据来自同一天线面板的第二PDCCH时所使用的接收波束。本公开实施例提供的技术方案，将在接收与下行数据来自同一天线面板的第二PDCCH时所使用的接收波束作为默认接收波束，从而给出一个准确的默认接收波束来接收下行数据，从而提高终端接收下行数据的准确度。下面，将通过几个实施例，对本公开提供的技术方案进行介绍说明。
图2是根据一示例性实施例示出的一种下行数据接收方法的流程图。该方法可应用于图1所示的网络架构中。该方法可以包括如下几个步骤(201～204)。
在步骤201中，基站通过第一天线面板向终端发送第一PDCCH携带第一DCI。
在本公开实施例中，基站具有多个天线面板，基站可以通过多个天线面板向终端发送DCI和下行数据。上述多个天线面板可以属于同一个TRP(Transmitter Receiver Point，发送接收点)，也可以属于多个不同的TRP。也即，一个基站可以有一个或多个TRP，每个TRP可以有一个或多个天线面板，不同的天线面板对应于不同的波束方向。
本公开实施例中，第一DCI用于调度基站向终端发送下行数据。该第一DCI用于指示终端如何接收下行数据，如指示该下行数据对应的时频资源位置、目标接收波束等信息。
可选地，第一DCI中携带接收波束指示信息，该接收波束指示信息用于指示接收下行数据所使用的目标接收波束。例如，该接收波束指示信息为TCI状态。当第一DCI中包括TCI状态时，基站通过该第一DCI告知终端用于调度PDSCH的TCI状态，即告知终端接收PDSCH上的下行数据时，使用的接收波束应当与接收该TCI状态对应的RS所使用的接收波束相同。之后，终端便可以使用上述确定的目标接收波束来接收PDSCH上的下行数据。当然，在一些其它可能的情况下，第一DCI中也可以不包括接收波束指示信息，如只包 括时频资源指示信息，该时频资源指示信息用于指示下行数据对应的时频资源位置。
在步骤202中，基站通过第二天线面板向终端发送下行数据。
上述第一天线面板和第二天线面板为同一天线面板；或者，第一天线面板和第二天线面板为两个不同的天线面板。也就是基站可以使用同一天线面板发送第一DCI和下行数据，也可以使用两个不同的天线面板分别来发送第一DCI和下行数据。
上述下行数据可以是业务数据，业务数据是指与业务相关的数据。对于不同的业务，业务数据所包含的内容也可能有所不同。
在步骤203中，若终端根据第一DCI无法确定出用于接收下行数据的目标接收波束，则终端选择默认接收波束。
当第一DCI中不包括接收波束指示信息时，也即终端接收到该第一DCI后不能从该第一DCI中解析出用于接收PDSCH上的下行数据的目标接收波束时，终端可以选择默认接收波束。
另外，当终端接收第一DCI和下行数据之间的时间间隔小于预设时长时，终端来不及解析该第一DCI中的接收波束指示信息，此时终端也无法确定出用于接收下行数据的目标接收波束，终端可以选择默认接收波束。
上述默认接收波束是终端在接收与下行数据来自同一天线面板的第二PDCCH时所使用的接收波束。例如，基站具有如下两个天线面板：Panel#0和Panel#1，基站通过Panel#1向终端发送下行数据，基站还通过该Panel#1向终端发送了第二PDCCH，则终端选择接收该第二PDCCH时所使用的接收波束作为默认接收波束。
可选地，终端在接收到第一PDCCH上携带的第一DCI之后，如果终端根据该第一DCI无法确定出用于接收下行数据的目标接收波束，则终端先确定基站发送下行数据所使用的第二天线面板，然后根据该第二天线面板确定默认接收波束，该默认接收波束是终端在接收来自该第二天线面板的第二PDCCH时所使用的接收波束。在本公开实施例中，对终端确定基站发送下行数据所使用的第二天线面板所采用的方式不作限定，例如终端可以根据CORESET配置信息确定出基站发送下行数据所使用的第二天线面板，也可以从第一DCI携带的信息中确定出基站发送下行数据所使用的第二天线面板。有关上述两种方式的介绍说明，可参见下文实施例。
在步骤204中，终端采用默认接收波束接收下行数据。
终端在确定默认接收波束后，可以采用该默认接收波束接收基站发送的下行数据。由于该默认接收波束接收过来自第二天线面板的信息，因此采用该默认接收波束接收来自该第二天线面板的下行数据时，不会出错，能够确保下行数据的准确接收。
综上所述，在本公开提供的技术方案中，终端在接收到基站通过第一天线面板发送的用于调度基站向终端发送下行数据的第一PDCCH上携带的第一DCI之后，如果终端根据该第一DCI无法确定出用于接收下行数据的目标接收波束，则终端选择默认接收波束接收下行数据，其中，默认接收波束是终端在接收与下行数据来自同一天线面板的第二PDCCH时所使用的接收波束。本公开实施例提供的技术方案，将在接收与下行数据来自同一天线面板的第二PDCCH时所使用的接收波束作为默认接收波束，从而给出一个准确的默认接收波束来接收下行数据，从而提高终端接收下行数据的准确度。
如果某一个天线面板发送的PDCCH上携带的DCI，只能够调度该天线面板上的资源来发送下行数据，而不能够调度其它天线面板上的资源来发送下行数据，则终端可以采用下述图3实施例介绍的方法来确定默认接收波束。
图3是根据另一示例性实施例示出的一种下行数据接收方法的流程图。该方法可应用于图1所示的网络架构中。该方法可以包括如下几个步骤(301～307)。
在步骤301中，基站通过第一天线面板向终端发送第一PDCCH携带第一DCI。
该第一DCI用于调度基站向终端发送下行数据。
在步骤302中，基站通过第二天线面板向终端发送下行数据。
在本实施例中，由于第一天线面板发送的第一DCI，只能够调度该第一天线面板上的资源来发送下行数据，因此第一天线面板和第二天线面板为同一天线面板。例如，基站具有如下两个天线面板：Panel#0和Panel#1，基站通过Panel#0向终端发送第一DCI，而后通过该Panel#0向终端发送下行数据。
在步骤303中，若终端根据第一DCI无法确定出用于接收下行数据的目标接收波束，则终端确定第一PDCCH所使用的目标CORESET。
基站可以给终端配置多个CORESET用于发送PDCCH，CORESET中包含 用于发送PDCCH的时频资源等信息。基站在给终端配置CORESET之后，可以将CORESET配置信息发送给终端，该CORESET配置信息可以包括基站给终端配置的各个CORESET的编号(也即ID)。CORESET的编号用于唯一标识该CORESET，不同的CORESET具有不同的编号。
终端在接收到第一PDCCH之后，可以根据该第一PDCCH所占用的时频资源位置，确定出基站在发送该第一PDCCH时是使用的哪一个CORESET，也即确定出该第一PDCCH所使用的目标CORESET。
在步骤304中，终端根据CORESET配置信息，将与目标CORESET对应的天线面板，确定为基站发送第一PDCCH所使用的第一天线面板。
在本实施例中，CORESET配置信息包括使用CORESET进行PDCCH发送的天线面板的标识信息。天线面板的标识信息用于唯一标识该天线面板，不同的天线面板具有不同的标识信息。
可选地，CORESET配置信息中包括至少一组CORESET与天线面板之间的对应关系。示例性地，假设基站给终端配置了3个CORESET用于发送PDCCH，分别为CORESET#0、CORESET#1和CORESET#2，则基站向终端发送的CORESET配置信息可以包括如下内容：{CORESET#0，Panel#0}、{CORESET#1，Panel#1}和{CORESET#2，Panel#0}。上述CORESET配置信息表示由Panel#0使用CORESET#0和CORESET#2向终端发送PDCCH，由Panel#1使用CORESET#1向终端发送PDCCH。当终端接收到第一PDCCH时，假设终端根据CORESET配置信息确定该第一PDCCH来自CORESET#2，则终端可以进一步确定出该第一PDCCH是由Panel#0发送的。
在步骤305中，终端将第一天线面板确定为第二天线面板。
在本实施例中，由于第一天线面板发送的第一PDCCH上携带的第一DCI，只能够调度该第一天线面板上的资源来发送下行数据，因此用于发送第一PDCCH的第一天线面板和用于发送下行数据的第二天线面板为同一天线面板。所以，终端在确定出第一天线面板之后，便可将该第一天线面板确定为基站发送下行数据时所使用的第二天线面板。仍然以上述例子说明，终端在确定出第一PDCCH是由Panel#0发送的之后，终端确定基站发送下行数据的第二天线面板也为Panel#0。
在步骤306中，终端根据第二天线面板确定默认接收波束。
上述默认接收波束是终端在接收来自第二天线面板的第二PDCCH时所使 用的接收波束。可选地，上述第二PDCCH是接收到来自第二天线面板的PDCCH的最近一个调度单元中，通过所述第二天线面板发送的CORESET中编号最小的CORESET发送的PDCCH。上述调度单元可以是从时域上划分的最小调度单位，如一个调度单元为一个时隙(slot)或一个小时隙(mini-slot)。
仍然以上述例子说明，终端在确定出基站发送下行数据采用的第二天线面板为Panel#0之后，终端需要找接收到来自Panel#0的PDCCH的最近一个调度单元中，Panel#0通过编号最小的CORESET发送的第二PDCCH。如果接收到来自Panel#0的PDCCH的最近一个调度单元中，Panel#0仅通过CORESET#2发送了PDCCH，则终端将该Panel#0通过CORESET#2发送的PDCCH确定为第二PDCCH，并使用接收该第二PDCCH的接收波束作为默认接收波束。如果接收到来自Panel#0的PDCCH的最近一个调度单元中，Panel#0仅通过CORESET#0发送了PDCCH，则终端将该Panel#0通过CORESET#0发送的PDCCH确定为第二PDCCH，并使用接收该第二PDCCH的接收波束作为默认接收波束。如果接收到来自Panel#0的PDCCH的最近一个调度单元中，Panel#0通过CORESET#0和CORESET#2发送了PDCCH，则终端将该Panel#0通过CORESET#0发送的PDCCH确定为第二PDCCH，并使用接收该第二PDCCH的接收波束作为默认接收波束。
在步骤307中，终端采用默认接收波束接收下行数据。
终端在确定默认接收波束后，可以采用该默认接收波束接收基站发送的下行数据。由于该默认接收波束接收过来自第二天线面板的信息，因此采用该默认接收波束接收来自该第二天线面板的下行数据时，不会出错，能够确保下行数据的准确接收。
综上所述，在本实施例提供的技术方案中，当某一个天线面板发送的PDCCH上携带的DCI，只能够调度该天线面板上的资源来发送下行数据时，基站向终端发送的CORESET配置信息中可以包括使用CORESET进行PDCCH发送的天线面板的标识信息，以便终端根据该CORESET配置信息确定出基站发送下行数据所采用的天线面板，进而选择准确的默认接收波束来接收下行数据，从而提高终端接收下行数据的准确度。
如果某一个天线面板发送的PDCCH上携带的DCI，除了能够调度该天线面板上的资源来发送下行数据之外，还能够调度其它天线面板上的资源来发送 下行数据，则终端可以采用下述图4实施例介绍的方法来确定默认接收波束。
图4是根据另一示例性实施例示出的一种下行数据接收方法的流程图。该方法可应用于图1所示的网络架构中。该方法可以包括如下几个步骤(401～405)。
在步骤401中，基站通过第一天线面板向终端发送第一PDCCH携带第一DCI。
该第一DCI用于调度基站向终端发送下行数据。
在步骤402中，基站通过第二天线面板向终端发送下行数据。
在本实施例中，由于第一天线面板发送的第一DCI，有可能调度其它天线面板上的资源来发送下行数据，因此第一天线面板和第二天线面板可以是两个不同的天线面板。例如，基站具有如下两个天线面板：Panel#0和Panel#1，基站通过Panel#0向终端发送第一DCI，该第一DCI用于调度Panel#1向终端发送下行数据，而后基站通过Panel#1向终端发送下行数据。上述第一天线面板和第二天线面板可以属于同一个TRP，也可以属于两个不同的TRP，本公开实施例对此不作限定。
在步骤403中，若终端根据第一DCI无法确定出用于接收下行数据的目标接收波束，则终端根据第一DCI中携带的天线面板指示信息，确定第二天线面板。
其中，天线面板指示信息用于指示基站发送下行数据所使用的第二天线面板。终端通过第一DCI中的天线面板指示信息，就可以直接得知基站发送下行数据所使用的第二天线面板。
与图3实施例相比，由于在本实施例中，第一天线面板和第二天线面板可以是两个不同的天线面板，因此终端无法直接根据CORESET配置信息确定出基站发送下行数据所使用的第二天线面板。在本实施例中，通过在第一DCI中携带天线面板指示信息，以便终端据此获知基站发送下行数据所使用的第二天线面板。
在步骤404中，终端根据第二天线面板确定默认接收波束。
上述默认接收波束是终端在接收来自第二天线面板的第二PDCCH时所使用的接收波束。可选地，上述第二PDCCH是接收到来自第二天线面板的PDCCH的最近一个调度单元中，通过所述第二天线面板发送的CORESET中编号最小的CORESET发送的PDCCH。上述调度单元可以是从时域上划分的 最小调度单位，如一个调度单元为一个时隙(slot)或一个小时隙(mini-slot)。
示例性地，假设基站给终端配置了3个CORESET用于发送PDCCH，分别为CORESET#0、CORESET#1和CORESET#2，则基站向终端发送的CORESET配置信息可以包括如下内容：{CORESET#0，Panel#0}、{CORESET#1，Panel#1}和{CORESET#2，Panel#0}。上述CORESET配置信息表示由Panel#0使用CORESET#0和CORESET#2向终端发送PDCCH，由Panel#1使用CORESET#1向终端发送PDCCH。假设终端接收到第一PDCCH上携带的DCI后，根据第一DCI中的天线面板指示信息确定出发送下行数据的第二天线面板为Panel#0，那么终端需要找接收到来自Panel#0的PDCCH的最近一个调度单元中，Panel#0通过编号最小的CORESET发送的第二PDCCH。如果接收到来自Panel#0的PDCCH的最近一个调度单元中，Panel#0仅通过CORESET#2发送了PDCCH，则终端将该Panel#0通过CORESET#2发送的PDCCH确定为第二PDCCH，并使用接收该第二PDCCH的接收波束作为默认接收波束。如果接收到来自Panel#0的PDCCH的最近一个调度单元中，Panel#0仅通过CORESET#0发送了PDCCH，则终端将该Panel#0通过CORESET#0发送的PDCCH确定为第二PDCCH，并使用接收该第二PDCCH的接收波束作为默认接收波束。如果接收到来自Panel#0的PDCCH的最近一个调度单元中，Panel#0通过CORESET#0和CORESET#2发送了PDCCH，则终端将该Panel#0通过CORESET#0发送的PDCCH确定为第二PDCCH，并使用接收该第二PDCCH的接收波束作为默认接收波束。
在步骤405中，终端采用默认接收波束接收下行数据。
终端在确定默认接收波束后，可以采用该默认接收波束接收基站发送的下行数据。由于该默认接收波束接收过来自第二天线面板的信息，因此采用该默认接收波束接收来自该第二天线面板的下行数据时，不会出错，能够确保下行数据的准确接收。
综上所述，在本实施例提供的技术方案中，当某一个天线面板发送的PDCCH上携带的DCI，除了能够调度该天线面板上的资源来发送下行数据之外，还能够调度其它天线面板上的资源来发送下行数据时，基站向终端发送的DCI中可以携带天线面板指示信息，以此指示基站发送下行数据所使用的天线面板，进而使得终端选择准确的默认接收波束来接收下行数据，从而提高终端接收下行数据的准确度。
需要说明的一点是，在一些其它实施例中，如果某一个天线面板发送的PDCCH上携带的DCI，只能够调度该天线面板上的资源来发送下行数据，而不能够调度其它天线面板上的资源来发送下行数据，基站向终端发送的DCI中也可以携带天线面板指示信息，以此指示基站发送下行数据所使用的天线面板，这样，终端就不必根据CORESET配置信息来确定基站发送下行数据所使用的天线面板。
另外，如果某一个天线面板发送的PDCCH上携带的DCI，只能够调度该天线面板上的资源来发送下行数据，而不能够调度其它天线面板上的资源来发送下行数据，则终端还可以采用下述图5实施例介绍的方法来确定默认接收波束。
图5是根据另一示例性实施例示出的一种下行数据接收方法的流程图。该方法可应用于图1所示的网络架构中。该方法可以包括如下几个步骤(501～504)。
在步骤501中，基站通过第一天线面板向终端发送第一PDCCH携带第一DCI。
该第一DCI用于调度基站向终端发送下行数据。
在步骤502中，基站通过第二天线面板向终端发送下行数据。
在本实施例中，由于第一天线面板发送的第一DCI，只能够调度该第一天线面板上的资源来发送下行数据，因此第一天线面板和第二天线面板为同一天线面板。例如，基站具有如下两个天线面板：Panel#0和Panel#1，基站通过Panel#0向终端发送第一DCI，而后通过该Panel#0向终端发送下行数据。
在步骤503中，若终端根据第一DCI无法确定出用于接收下行数据的目标接收波束，则终端将接收第一PDCCH所使用的接收波束，确定为默认接收波束。
在本实施例中，由于基站发送下行数据的第二天线面板与基站发送第一PDCCH的第一天线面板为同一天线面板，因此终端可以直接将接收该第一PDCCH所使用的接收波束作为默认接收波束。
示例性地，假设基站给终端配置了3个CORESET用于发送PDCCH，分别为CORESET#0、CORESET#1和CORESET#2。在这种情况下，当终端接收到来自CORESET#2的第一PDCCH时，终端直接将接收该第一PDCCH的接 收波束作为接收下行数据的默认接收波束。
在步骤504中，终端采用默认接收波束接收下行数据。
终端在确定默认接收波束后，可以采用该默认接收波束接收基站发送的下行数据。由于该默认接收波束接收过来自第二天线面板的信息，因此采用该默认接收波束接收来自该第二天线面板的下行数据时，不会出错，能够确保下行数据的准确接收。
综上所述，在本实施例提供的技术方案中，当某一个天线面板发送的PDCCH上携带的DCI，只能够调度该天线面板上的资源来发送下行数据时，终端在接收到基站发送的用于调度下行数据的第一PDCCH之后，可以直接将接收该第一PDCCH所使用的接收波束确定为默认接收波束，实现了选择准确的默认接收波束来接收下行数据，从而提高终端接收下行数据的准确度。
在上述方法实施例中，仅从终端和基站交互的角度进行介绍说明，上述有关终端的步骤可以单独实现成为终端一侧的下行数据接收方法，上述有关基站的步骤可以单独实现成为基站一侧的下行数据发送方法。
下述为本公开装置实施例，可以用于执行本公开方法实施例。对于本公开装置实施例中未披露的细节，请参照本公开方法实施例。
图6是根据一示例性实施例示出的一种下行数据接收装置的框图。该装置具有实现上述终端侧的方法示例的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该装置可以是上文介绍的终端，也可以设置在终端中。该装置600可以包括：控制信息接收模块610、接收波束选择模块620和下行数据接收模块630。
控制信息接收模块610，被配置为接收基站通过第一天线面板发送的第一PDCCH上携带的第一DCI，所述第一DCI用于调度所述基站向所述终端发送下行数据。
接收波束选择模块620，被配置为当所述终端根据所述第一DCI无法确定出用于接收所述下行数据的目标接收波束时，选择默认接收波束，所述默认接收波束是所述终端在接收与所述下行数据来自同一天线面板的第二PDCCH时所使用的接收波束。
下行数据接收模块630，被配置为采用所述默认接收波束接收所述下行数 据。
综上所述，在本公开提供的技术方案中，终端在接收到基站通过第一天线面板发送的用于调度基站向终端发送下行数据的第一PDCCH上携带的第一DCI之后，如果终端根据该第一DCI无法确定出用于接收下行数据的目标接收波束，则终端选择默认接收波束接收下行数据，其中，默认接收波束是终端在接收与下行数据来自同一天线面板的第二PDCCH时所使用的接收波束。本公开实施例提供的技术方案，将在接收与下行数据来自同一天线面板的第二PDCCH时所使用的接收波束作为默认接收波束，从而给出一个准确的默认接收波束来接收下行数据，从而提高终端接收下行数据的准确度。
在基于图6实施例提供的一个可选实施例中，如图7所示，所述接收波束选择模块620，包括：天线面板确定单元621和接收波束确定单元622。
天线面板确定单元621，被配置为确定所述基站发送所述下行数据所使用的第二天线面板。
接收波束确定单元622，被配置为根据所述第二天线面板确定所述默认接收波束，所述默认接收波束是所述终端在接收来自所述第二天线面板的所述第二PDCCH时所使用的接收波束。
可选地，所述第一天线面板和所述第二天线面板为同一天线面板；
所述天线面板确定单元621，被配置为：
确定所述第一PDCCH所使用的目标CORESET；
根据CORESET配置信息，将与所述目标CORESET对应的天线面板，确定为所述基站发送所述第一PDCCH所使用的所述第一天线面板；其中，所述CORESET配置信息包括使用CORESET进行PDCCH发送的天线面板的标识信息；
将所述第一天线面板确定为所述第二天线面板。
可选地，所述天线面板确定单元621，被配置为：
根据所述第一DCI中携带的天线面板指示信息，确定所述第二天线面板；其中，所述天线面板指示信息用于指示所述基站发送所述下行数据所使用的所述第二天线面板。
可选地，所述第二PDCCH是接收到来自所述第二天线面板的PDCCH的最近一个调度单元中，通过所述第二天线面板发送的CORESET中编号最小的CORESET发送的PDCCH。
在基于图6实施例或者上述任一可选实施例提供的另一个可选实施例中，所述第二天线面板与所述第一天线面板为同一天线面板；
所述接收波束选择模块620，被配置为：
将接收所述第一PDCCH所使用的接收波束，确定为所述默认接收波束。
图8是根据一示例性实施例示出的一种下行数据发送装置的框图。该装置具有实现上述基站侧的方法示例的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该装置可以是上文介绍的基站，也可以设置在基站中。该装置800可以包括：控制信息发送模块810和下行数据发送模块820。
控制信息发送模块810，被配置为通过第一天线面板向终端发送第一PDCCH携带第一DCI，所述第一DCI用于调度所述基站向所述终端发送下行数据。
下行数据发送模块820，被配置为通过第二天线面板向所述终端发送所述下行数据，以使得所述终端采用默认接收波束接收所述下行数据，所述默认接收波束是所述终端在接收与所述下行数据来自同一天线面板的第二PDCCH时所使用的接收波束。
综上所述，在本公开提供的技术方案中，终端在接收到基站通过第一天线面板发送的用于调度基站向终端发送下行数据的第一PDCCH上携带的第一DCI之后，如果终端根据该第一DCI无法确定出用于接收下行数据的目标接收波束，则终端选择默认接收波束接收下行数据，其中，默认接收波束是终端在接收与下行数据来自同一天线面板的第二PDCCH时所使用的接收波束。本公开实施例提供的技术方案，将在接收与下行数据来自同一天线面板的第二PDCCH时所使用的接收波束作为默认接收波束，从而给出一个准确的默认接收波束来接收下行数据，从而提高终端接收下行数据的准确度。
在基于图8实施例提供的一个可选实施例中，所述第一天线面板和所述第二天线面板为同一天线面板；或者，所述第一天线面板和所述第二天线面板为两个不同的天线面板。
在基于图8实施例或者上述任一可选实施例提供的另一个可选实施例中，如图9所示，所述装置800还包括：配置信息发送模块830。
配置信息发送模块830，被配置为向所述终端发送CORESET配置信息，所述CORESET配置信息包括使用CORESET进行PDCCH发送的天线面板的 标识信息，以使得所述终端根据所述CORESET配置信息确定所述基站发送所述第一PDCCH所使用的所述第一天线面板，并将所述第一天线面板确定为所述第二天线面板。
在基于图8实施例或者上述任一可选实施例提供的另一个可选实施例中，所述第一DCI中携带天线面板指示信息，所述天线面板指示信息用于指示所述基站发送所述下行数据所使用的所述第二天线面板。
需要说明的一点是，上述实施例提供的装置在实现其功能时，仅以上述各个功能模块的划分进行举例说明，实际应用中，可以根据实际需要而将上述功能分配由不同的功能模块完成，即将设备的内容结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
上述主要从基站和终端交互的角度，对本公开实施例提供的方案进行了介绍。可以理解的是，基站、终端为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。结合本公开中所公开的实施例描述的各示例的单元及算法步骤，本公开实施例能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。本领域技术人员可以对每个特定的应用来使用不同的方法来实现所描述的功能，但是这种实现不应认为超出本公开实施例的技术方案的范围。
本公开一示例性实施例还提供了一种下行数据接收装置，能够实现本公开提供的下行数据接收方法。该装置可以是上文介绍的终端，也可以设置在终端中。该装置包括：处理器，以及用于存储处理器的可执行指令的存储器。其中，处理器被配置为：
接收基站通过第一天线面板发送的第一PDCCH上携带的第一DCI，所述第一DCI用于调度所述基站向所述终端发送下行数据；
当所述终端根据所述第一DCI无法确定出用于接收所述下行数据的目标接收波束时，选择默认接收波束，所述默认接收波束是所述终端在接收与所述 下行数据来自同一天线面板的第二PDCCH时所使用的接收波束；
采用所述默认接收波束接收所述下行数据。
可选地，所述处理器还被配置为：
确定所述基站发送所述下行数据所使用的第二天线面板；
根据所述第二天线面板确定所述默认接收波束，所述默认接收波束是所述终端在接收来自所述第二天线面板的所述第二PDCCH时所使用的接收波束。
可选地，所述第一天线面板和所述第二天线面板为同一天线面板；
所述处理器还被配置为：
确定所述第一PDCCH所使用的目标CORESET；
根据CORESET配置信息，将与所述目标CORESET对应的天线面板，确定为所述基站发送所述第一PDCCH所使用的所述第一天线面板；其中，所述CORESET配置信息包括使用CORESET进行PDCCH发送的天线面板的标识信息；
将所述第一天线面板确定为所述第二天线面板。
可选地，所述处理器还被配置为：
根据所述第一DCI中携带的天线面板指示信息，确定所述第二天线面板；其中，所述天线面板指示信息用于指示所述基站发送所述下行数据所使用的所述第二天线面板。
可选地，所述第二PDCCH是接收到来自所述第二天线面板的PDCCH的最近一个调度单元中，通过所述第二天线面板发送的CORESET中编号最小的CORESET发送的PDCCH。
可选地，所述第二天线面板与所述第一天线面板为同一天线面板；
所述处理器还被配置为：
将接收所述第一PDCCH所使用的接收波束，确定为所述默认接收波束。
本公开一示例性实施例还提供了一种下行数据发送装置，能够实现本公开提供的下行数据发送方法。该装置可以是上文介绍的基站，也可以设置在基站中。该装置包括：处理器，以及用于存储处理器的可执行指令的存储器。其中，处理器被配置为：
通过第一天线面板向终端发送第一PDCCH携带第一DCI，所述第一DCI用于调度所述基站向所述终端发送下行数据；
通过第二天线面板向所述终端发送所述下行数据，以使得所述终端采用默认接收波束接收所述下行数据，所述默认接收波束是所述终端在接收与所述下行数据来自同一天线面板的第二PDCCH时所使用的接收波束。
可选地，所述第一天线面板和所述第二天线面板为同一天线面板；
或者，
所述第一天线面板和所述第二天线面板为两个不同的天线面板。
可选地，所述处理器还被配置为：
向所述终端发送CORESET配置信息，所述CORESET配置信息包括使用CORESET进行PDCCH发送的天线面板的标识信息，以使得所述终端根据所述CORESET配置信息确定所述基站发送所述第一PDCCH所使用的所述第一天线面板，并将所述第一天线面板确定为所述第二天线面板。
可选地，所述第一DCI中携带天线面板指示信息，所述天线面板指示信息用于指示所述基站发送所述下行数据所使用的所述第二天线面板。
图10是根据一示例性实施例示出的一种终端的结构示意图。
所述终端1000包括发射器1001，接收器1002和处理器1003。其中，处理器1003也可以为控制器，图10中表示为“控制器/处理器1003”。可选的，所述终端1000还可以包括调制解调处理器1005，其中，调制解调处理器1005可以包括编码器1006、调制器1007、解码器1008和解调器1009。
在一个示例中，发射器1001调节(例如，模拟转换、滤波、放大和上变频等)该输出采样并生成上行链路信号，该上行链路信号经由天线发射给上述实施例中所述的基站。在下行链路上，天线接收上述实施例中基站发射的下行链路信号。接收器1002调节(例如，滤波、放大、下变频以及数字化等)从天线接收的信号并提供输入采样。在调制解调处理器1005中，编码器1006接收要在上行链路上发送的业务数据和信令消息，并对业务数据和信令消息进行处理(例如，格式化、编码和交织)。调制器1007进一步处理(例如，符号映射和调制)编码后的业务数据和信令消息并提供输出采样。解调器1009处理(例如，解调)该输入采样并提供符号估计。解码器1008处理(例如，解交织和解码)该符号估计并提供发送给终端1000的已解码的数据和信令消息。编码器1006、调制器1007、解调器1009和解码器1008可以由合成的调制解调处理器1005来实现。这些单元根据无线接入网采用的无线接入技术(例如，LTE及其他演进 系统的接入技术)来进行处理。需要说明的是，当终端1000不包括调制解调处理器1005时，调制解调处理器1005的上述功能也可以由处理器1003完成。
处理器1003对终端1000的动作进行控制管理，用于执行上述本公开实施例中由终端1000进行的处理过程。例如，处理器1003还用于执行上述方法实施例中的终端侧的各个步骤，和/或本公开实施例所描述的技术方案的其它步骤。
进一步的，终端1000还可以包括存储器1004，存储器1004用于存储用于终端1000的程序代码和数据。
可以理解的是，图10仅仅示出了终端1000的简化设计。在实际应用中，终端1000可以包含任意数量的发射器，接收器，处理器，调制解调处理器，存储器等，而所有可以实现本公开实施例的终端都在本公开实施例的保护范围之内。
图11是根据一示例性实施例示出的一种基站的结构示意图。
基站1100包括发射器/接收器1101和处理器1102。其中，处理器1102也可以为控制器，图11中表示为“控制器/处理器1102”。所述发射器/接收器1101用于支持基站与上述实施例中的所述终端之间收发信息，以及支持所述基站与其它网络实体之间进行通信。所述处理器1102执行各种用于与终端通信的功能。在上行链路，来自所述终端的上行链路信号经由天线接收，由接收器1101进行解调(例如将高频信号解调为基带信号)，并进一步由处理器1102进行处理来恢复终端所发送到业务数据和信令消息。在下行链路上，业务数据和信令消息由处理器1102进行处理，并由发射器1101进行调制(例如将基带信号调制为高频信号)来产生下行链路信号，并经由天线发射给终端。需要说明的是，上述解调或调制的功能也可以由处理器1102完成。例如，处理器1102还用于执行上述方法实施例中基站侧的各个步骤，和/或本公开实施例所描述的技术方案的其它步骤。
进一步的，基站1100还可以包括存储器1103，存储器1103用于存储基站1100的程序代码和数据。此外，基站1100还可以包括通信单元1104。通信单元1104用于支持基站1100与其它网络实体(例如核心网中的网络设备等)进行通信。例如，在5G NR系统中，该通信单元1104可以是NG-U接口，用于支持基站1100与UPF(User Plane Function，用户平面功能)实体进行通信； 或者，该通信单元1104也可以是NG-C接口，用于支持基站1100与AMF(Access and Mobility Management Function，接入和移动性管理功能)实体进行通信。
可以理解的是，图11仅仅示出了基站1100的简化设计。在实际应用中，基站1100可以包含任意数量的发射器，接收器，处理器，控制器，存储器，通信单元等，而所有可以实现本公开实施例的基站都在本公开实施例的保护范围之内。
本公开实施例还提供了一种非临时性计算机可读存储介质，其上存储有计算机程序，所述计算机程序被终端的处理器执行时实现如上文介绍的终端侧的下行数据接收方法。
本公开实施例还提供了一种非临时性计算机可读存储介质，其上存储有计算机程序，所述计算机程序被基站的处理器执行时实现如上文介绍的基站侧的下行数据发送方法。
应当理解的是，在本文中提及的“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (23)

  1. 一种下行数据接收方法，其特征在于，所述方法包括：
    终端接收基站通过第一天线面板发送的第一物理下行控制信道PDCCH上携带的第一下行控制信息DCI，所述第一DCI用于调度所述基站向所述终端发送下行数据；
    若所述终端根据所述第一DCI无法确定出用于接收所述下行数据的目标接收波束，则所述终端选择默认接收波束，所述默认接收波束是所述终端在接收与所述下行数据来自同一天线面板的第二PDCCH时所使用的接收波束；
    所述终端采用所述默认接收波束接收所述下行数据。
  2. 根据权利要求1所述的方法，其特征在于，所述终端选择默认接收波束，包括：
    所述终端确定所述基站发送所述下行数据所使用的第二天线面板；
    所述终端根据所述第二天线面板确定所述默认接收波束，所述默认接收波束是所述终端在接收来自所述第二天线面板的所述第二PDCCH时所使用的接收波束。
  3. 根据权利要求2所述的方法，其特征在于，所述第一天线面板和所述第二天线面板为同一天线面板；
    所述终端确定所述基站发送所述下行数据所使用的第二天线面板，包括：
    所述终端确定所述第一PDCCH所使用的目标控制资源集合CORESET；
    所述终端根据CORESET配置信息，将与所述目标CORESET对应的天线面板，确定为所述基站发送所述第一PDCCH所使用的所述第一天线面板；其中，所述CORESET配置信息包括使用CORESET进行PDCCH发送的天线面板的标识信息；
    所述终端将所述第一天线面板确定为所述第二天线面板。
  4. 根据权利要求2所述的方法，其特征在于，所述终端确定所述基站发送所述下行数据所使用的第二天线面板，包括：
    所述终端根据所述第一DCI中携带的天线面板指示信息，确定所述第二天 线面板；其中，所述天线面板指示信息用于指示所述基站发送所述下行数据所使用的所述第二天线面板。
  5. 根据权利要求2所述的方法，其特征在于，所述第二PDCCH是接收到来自所述第二天线面板的PDCCH的最近一个调度单元中，通过所述第二天线面板发送的CORESET中编号最小的CORESET发送的PDCCH。
  6. 根据权利要求1所述的方法，其特征在于，所述第二天线面板与所述第一天线面板为同一天线面板；
    所述终端选择默认接收波束，包括：
    所述终端将接收所述第一PDCCH所使用的接收波束，确定为所述默认接收波束。
  7. 一种下行数据发送方法，其特征在于，所述方法包括：
    基站通过第一天线面板向终端发送第一PDCCH携带第一DCI，所述第一DCI用于调度所述基站向所述终端发送下行数据；
    所述基站通过第二天线面板向所述终端发送所述下行数据，以使得所述终端采用默认接收波束接收所述下行数据，所述默认接收波束是所述终端在接收与所述下行数据来自同一天线面板的第二PDCCH时所使用的接收波束。
  8. 根据权利要求7所述的方法，其特征在于，
    所述第一天线面板和所述第二天线面板为同一天线面板；
    或者，
    所述第一天线面板和所述第二天线面板为两个不同的天线面板。
  9. 根据权利要求7所述的方法，其特征在于，所述方法还包括：
    所述基站向所述终端发送CORESET配置信息，所述CORESET配置信息包括使用CORESET进行DCI发送的天线面板的标识信息，以使得所述终端根据所述CORESET配置信息确定所述基站发送所述第一PDCCH所使用的所述第一天线面板，并将所述第一天线面板确定为所述第二天线面板。
  10. 根据权利要求7所述的方法，其特征在于，所述第一DCI中携带天线面板指示信息，所述天线面板指示信息用于指示所述基站发送所述下行数据所使用的所述第二天线面板。
  11. 一种下行数据接收装置，其特征在于，应用于终端中，所述装置包括：
    控制信息接收模块，被配置为接收基站通过第一天线面板发送的第一PDCCH上携带的第一DCI，所述第一DCI用于调度所述基站向所述终端发送下行数据；
    接收波束选择模块，被配置为当所述终端根据所述第一DCI无法确定出用于接收所述下行数据的目标接收波束时，选择默认接收波束，所述默认接收波束是所述终端在接收与所述下行数据来自同一天线面板的第二PDCCH时所使用的接收波束；
    下行数据接收模块，被配置为采用所述默认接收波束接收所述下行数据。
  12. 根据权利要求11所述的装置，其特征在于，所述接收波束选择模块，包括：
    天线面板确定单元，被配置为确定所述基站发送所述下行数据所使用的第二天线面板；
    接收波束确定单元，被配置为根据所述第二天线面板确定所述默认接收波束，所述默认接收波束是所述终端在接收来自所述第二天线面板的所述第二PDCCH时所使用的接收波束。
  13. 根据权利要求12所述的装置，其特征在于，所述第一天线面板和所述第二天线面板为同一天线面板；
    所述天线面板确定单元，被配置为：
    确定所述第一PDCCH所使用的CORESET；
    根据CORESET配置信息，将与所述目标CORESET对应的天线面板，确定为所述基站发送所述第一PDCCH所使用的所述第一天线面板；其中，所述CORESET配置信息包括使用CORESET进行PDCCH发送的天线面板的标识信息；
    将所述第一天线面板确定为所述第二天线面板。
  14. 根据权利要求12所述的装置，其特征在于，所述天线面板确定单元，被配置为：
    根据所述第一DCI中携带的天线面板指示信息，确定所述第二天线面板；其中，所述天线面板指示信息用于指示所述基站发送所述下行数据所使用的所述第二天线面板。
  15. 根据权利要求12所述的装置，其特征在于，所述第二PDCCH是接收到来自所述第二天线面板的PDCCH的最近一个调度单元中，通过所述第二天线面板发送的CORESET中编号最小的CORESET发送的PDCCH。
  16. 根据权利要求11所述的装置，其特征在于，所述第二天线面板与所述第一天线面板为同一天线面板；
    所述接收波束选择模块，被配置为：
    将接收所述第一PDCCH所使用的接收波束，确定为所述默认接收波束。
  17. 一种下行数据发送装置，其特征在于，应用于基站中，所述装置包括：
    控制信息发送模块，被配置为通过第一天线面板向终端发送第一PDCCH携带第一DCI，所述第一DCI用于调度所述基站向所述终端发送下行数据；
    下行数据发送模块，被配置为通过第二天线面板向所述终端发送所述下行数据，以使得所述终端采用默认接收波束接收所述下行数据，所述默认接收波束是所述终端在接收与所述下行数据来自同一天线面板的第二PDCCH时所使用的接收波束。
  18. 根据权利要求17所述的装置，其特征在于，
    所述第一天线面板和所述第二天线面板为同一天线面板；
    或者，
    所述第一天线面板和所述第二天线面板为两个不同的天线面板。
  19. 根据权利要求17所述的装置，其特征在于，所述装置还包括：
    配置信息发送模块，被配置为向所述终端发送CORESET配置信息，所述 CORESET配置信息包括使用CORESET进行DCI发送的天线面板的标识信息，以使得所述终端根据所述CORESET配置信息确定所述基站发送所述第一PDCCH所使用的所述第一天线面板，并将所述第一天线面板确定为所述第二天线面板。
  20. 根据权利要求17所述的装置，其特征在于，所述第一DCI中携带天线面板指示信息，所述天线面板指示信息用于指示所述基站发送所述下行数据所使用的所述第二天线面板。
  21. 一种下行数据接收装置，其特征在于，应用于终端中，所述装置包括：
    处理器；
    用于存储所述处理器的可执行指令的存储器；
    其中，所述处理器被配置为：
    接收基站通过第一天线面板发送的第一PDCCH上携带的第一DCI，所述第一DCI用于调度所述基站向所述终端发送下行数据；
    当所述终端根据所述第一DCI无法确定出用于接收所述下行数据的目标接收波束时，选择默认接收波束，所述默认接收波束是所述终端在接收与所述下行数据来自同一天线面板的第二PDCCH时所使用的接收波束；
    采用所述默认接收波束接收所述下行数据。
  22. 一种下行数据发送装置，其特征在于，应用于基站中，所述装置包括：
    处理器；
    用于存储所述处理器的可执行指令的存储器；
    其中，所述处理器被配置为：
    通过第一天线面板向终端发送第一PDCCH携带第一DCI，所述第一DCI用于调度所述基站向所述终端发送下行数据；
    通过第二天线面板向所述终端发送所述下行数据，以使得所述终端采用默认接收波束接收所述下行数据，所述默认接收波束是所述终端在接收与所述下行数据来自同一天线面板的第二PDCCH时所使用的接收波束。
  23. 一种非临时性计算机可读存储介质，其上存储有计算机程序，其特征 在于，所述计算机程序被处理器执行时实现如权利要求1至6任一项所述方法的步骤，或者实现如权利要求7至10任一项所述方法的步骤。
PCT/CN2019/070847 2019-01-08 2019-01-08 下行数据接收方法、发送方法、装置和储存介质 WO2020142899A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4301062A4 (en) * 2021-02-25 2024-04-10 Beijing Xiaomi Mobile Software Co Ltd RADIATION DETERMINATION METHOD AND DEVICE AND COMMUNICATION DEVICE

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4075856A4 (en) * 2019-12-13 2023-08-16 Beijing Xiaomi Mobile Software Co., Ltd. WIRELESS COMMUNICATION METHOD AND DEVICE AND STORAGE MEDIUM
US20230413282A1 (en) * 2020-09-30 2023-12-21 Beijing Xiaomi Mobile Software Co., Ltd. Method for transmitting information, apparatus, terminal, device and medium
BR112023019431A2 (pt) * 2021-03-30 2023-12-05 Beijing Xiaomi Mobile Software Co Ltd Método e aparelho para determinar um feixe padrão, dispositivo de comunicação, e, meio de armazenamento de computador
CN113261323A (zh) * 2021-03-30 2021-08-13 北京小米移动软件有限公司 默认波束的确定方法、装置及通信设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017079544A1 (en) * 2015-11-05 2017-05-11 Ntt Docomo, Inc. Radio communication system, radio base station, and user equipment
US20180041319A1 (en) * 2016-08-08 2018-02-08 Futurewei Technologies, Inc. Systems and Methods for UE-Specific Beam Management for High Frequency Wireless Communication
CN108023629A (zh) * 2016-11-03 2018-05-11 株式会社Ntt都科摩 波束确定方法、下行传输解调方法、用户设备和基站
CN108024346A (zh) * 2016-11-04 2018-05-11 华为技术有限公司 一种资源指示方法、设备及系统
CN108199819A (zh) * 2018-02-26 2018-06-22 中兴通讯股份有限公司 控制信令的发送、接收以及信息的确定方法及装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2667145C2 (ru) * 2014-12-15 2018-09-17 Хуавей Текнолоджиз Ко., Лтд. Способ и оборудование обработки для реализации высокочастотной связи и устройство
CN107666682B (zh) * 2016-07-27 2023-05-02 中兴通讯股份有限公司 通信信道的传输方法及装置、系统
CN108023623B (zh) * 2016-11-04 2022-05-27 维沃移动通信有限公司 一种终端信息上报、获取方法、终端及基站
CN108024383B (zh) * 2016-11-04 2022-10-21 中兴通讯股份有限公司 数据发送、接收方法及装置、电子设备
WO2018143702A1 (en) * 2017-02-01 2018-08-09 Samsung Electronics Co., Ltd. Apparatus and method for beam management in wireless communication systems
CN113726492A (zh) * 2017-02-04 2021-11-30 华为技术有限公司 终端、网络设备和通信方法
US11510114B2 (en) * 2017-02-27 2022-11-22 Apple Inc. Exit conditions for conditional handovers and beam based mobility state estimation
JP6911138B2 (ja) * 2017-03-07 2021-07-28 エルジー エレクトロニクス インコーポレイティド ランダムアクセスプリアンブルを送信する方法とユーザ機器
EP3619876B1 (en) * 2017-05-04 2022-07-06 Fg Innovation Company Limited User equipments, base stations and methods
CN113692000B (zh) * 2017-05-05 2023-03-24 展讯通信（上海）有限公司 接收公共控制消息的方法、终端及存储介质
WO2018232090A1 (en) * 2017-06-14 2018-12-20 Idac Holdings, Inc. Unified beam management in a wireless network
CN109150272B (zh) * 2017-06-16 2020-10-09 华为技术有限公司 通信方法、终端及网络设备
ES2960620T3 (es) * 2017-11-15 2024-03-05 Interdigital Patent Holdings Inc Gestión de haces en una red inalámbrica
CN114845413A (zh) * 2018-05-25 2022-08-02 成都华为技术有限公司 通信方法、终端设备和网络设备
CN110691416B (zh) * 2018-07-05 2023-06-09 华为技术有限公司 一种资源调度的方法和装置
US11172386B2 (en) * 2018-09-04 2021-11-09 Qualcomm Incorporated Prioritizations during beam failure recovery

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017079544A1 (en) * 2015-11-05 2017-05-11 Ntt Docomo, Inc. Radio communication system, radio base station, and user equipment
US20180041319A1 (en) * 2016-08-08 2018-02-08 Futurewei Technologies, Inc. Systems and Methods for UE-Specific Beam Management for High Frequency Wireless Communication
CN108023629A (zh) * 2016-11-03 2018-05-11 株式会社Ntt都科摩 波束确定方法、下行传输解调方法、用户设备和基站
CN108024346A (zh) * 2016-11-04 2018-05-11 华为技术有限公司 一种资源指示方法、设备及系统
CN108199819A (zh) * 2018-02-26 2018-06-22 中兴通讯股份有限公司 控制信令的发送、接收以及信息的确定方法及装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4301062A4 (en) * 2021-02-25 2024-04-10 Beijing Xiaomi Mobile Software Co Ltd RADIATION DETERMINATION METHOD AND DEVICE AND COMMUNICATION DEVICE

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