CN111464218A - Method and device for managing downlink wave beams - Google Patents

Method and device for managing downlink wave beams Download PDF

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Publication number
CN111464218A
CN111464218A CN201910048292.9A CN201910048292A CN111464218A CN 111464218 A CN111464218 A CN 111464218A CN 201910048292 A CN201910048292 A CN 201910048292A CN 111464218 A CN111464218 A CN 111464218A
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CN
China
Prior art keywords
antenna
terminal
reference signal
downlink reference
attribute
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Granted
Application number
CN201910048292.9A
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Chinese (zh)
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CN111464218B (en
Inventor
李岩
王飞
金婧
郑毅
王启星
刘光毅
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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Priority to CN201910048292.9A priority Critical patent/CN111464218B/en
Priority to PCT/CN2020/071372 priority patent/WO2020147654A1/en
Publication of CN111464218A publication Critical patent/CN111464218A/en
Application granted granted Critical
Publication of CN111464218B publication Critical patent/CN111464218B/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Abstract

The invention provides a method and equipment for managing downlink beams. In the downlink beam management process, the invention introduces the report of the antenna panel/antenna group information, so that the base station knows which beam is used by the terminal to receive the downlink reference signal (such as CSI-RS), thereby avoiding the problem that the uplink transmission performance of the terminal is influenced due to the fact that a plurality of SRS which cannot be simultaneously transmitted by the subsequent configuration.

Description

Method and device for managing downlink wave beams
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method and equipment for managing downlink beams.
Background
At present, a flow example of beam determination based on a Physical Uplink Shared Channel (PUSCH) of Non-Codebook (Non-Codebook) transmission is shown in fig. 1, and includes:
1) the base station configures 1 Sounding reference signal set (SRS set) for the terminal in advance, where the set may include multiple Sounding reference signal resources (SRS resources). For example, an SRS set includes a maximum of 4 SRS resources, each resource being a single port (port);
2) the terminal transmits the SRS to the base station.
3) A base station sends sounding reference Signal Resource Indicator (SRI) Information to a terminal finger through Downlink Control Information (DCI), which may be DCI format 0_1, and indicates SRS resource corresponding to a beam selected by the base station; the terminal receives the SRI, and can determine a sending beam of the PUSCH, determine precoding (precoder) of the PUSCH and determine Rank (Rank) of the PUSCH. For example, when a terminal (UE) transmits a plurality of SRSs, such as SRS0, SRS1, SRS2, and SRS3, and the base station selects SRS0 and SRS1 among them, it indicates that a PUSCH is transmitted in the beam direction of SRS0 and SRS1, and the precoder of the PUSCH employs SRS0 and the precoder of SRS1, and the Rank of the PUSCH is 2. Wherein, 4 srsrsresources may determine their own transmission beam according to the third parameter SRS-SpatialRelationInfo or associatedCSI-RS, and generally, the SRS-SpatialRelationInfo and associatedCSI-RS are not configured for the terminal at the same time:
a) AssociatedCSI-RS mode:
a.1) periodic/semi-persistent SRS: the associated CSI-RSID can be determined through a third parameter associatedCSI-RS, and the terminal transmits the SRS by receiving the CSI-RS beam;
a.2) aperiodic SRS: the associated CSI-RS ID can be determined through an SRS request field domain in the DCI, and the terminal receives the CSI-RS wave beam and sends the SRS;
b) SRS-spatialRelationInfo mode:
b.1) when configured as SSB-Index, the terminal can transmit SRS using the beam receiving SSB;
b.2) when the CSI-RS-Index is configured, the terminal transmits the SRS by using the wave beam for receiving the CSI-RS;
b.3) when configured as SRS-Index, the terminal may transmit SRS with reference to SRS beams with the same periodicity.
The following problems exist when the PUSCH is transmitted based on the non-codebook:
it is assumed that the terminal capability is capable of transmitting 4 streams and each antenna panel (panel) can transmit only 2 streams at most at the same time, so that 2 panels can constitute 4 streams transmission when transmitted at the same time, as shown in fig. 2. Suppose that the base station configures 1 SRSset for the terminal, including 4 SRS resources, where each resource is a single port (port). For a terminal with 2 panels, assume that the terminal transmits SRS0, SRS1, SRS2, and SRS3 (non-simultaneous transmission) on Panel0, as shown in fig. 3. The subsequent base station may indicate that the SRI of the PUSCH transmission is {0,1,2,3} through DCI format 0_1, to indicate that the transmission beam of the PUSCH is the beam of SRS0, SRS1, SRS2, SRS3, and Rank is 4. However, since SRS0, SRS1, SRS2, and SRS3 are all from panel0, the terminal capability can only support 2 streams simultaneously on 1 panel at most, and thus 4-stream transmission of 1 panel cannot be achieved.
The above problems are particularly likely to occur when uplink and downlink are reciprocal. For example, the 4 SRS resources determine respective transmission beams according to SRS-spatialRelationInfo or associatedSI-RS. When configuring the CSI-RS as the reference signal of the SRS transmission beam, assuming that the CSI-RS0, CSI-RS1, CSI-RS2 and CSI-RS3 are received by the terminal on Panel0 before, the base station may configure SRS0 reference CSI-RS0, SRS1 reference CSI-RS1, SRS2 reference CSI-RS2, and SRS3 reference CSI-RS3, so as to indicate that SRS0 is transmitted on Panel0 receiving CSI-RS0 and is consistent with the beam direction of CSI-RS0, and the other SRS is similar. However, since the base station (e.g., the gNB) does not know which Panel the terminal (UE) uses to receive the CSI-RS, the base station may select SRS0, SRS1, SRS2, and SRS3 to instruct the terminal, and the terminal cannot transmit SRS0, SRS1, SRS2, and SRS3 on Panel0 at the same time, so that 4-stream uplink PUSCH transmission may be originally possible, and the transmission may be reduced to 2-stream transmission.
Disclosure of Invention
An object of the embodiments of the present invention is to provide a method and a device for downlink beam management, which can implement reporting of antenna panel/antenna group information in a downlink beam management process.
The embodiment of the invention provides a method for managing downlink wave beams, which is applied to a terminal side and comprises the following steps:
a terminal measures at least one downlink reference signal sent by a base station, obtains the measurement result of the downlink reference signal and determines the antenna attribute for receiving the downlink reference signal;
and the terminal reports the measurement result of the downlink reference signal to a base station and reports the antenna attribute for receiving the downlink reference signal.
The embodiment of the invention also provides a method for managing downlink beams, which is applied to a base station side and comprises the following steps:
transmitting at least one downlink reference signal to a terminal;
and receiving the measurement result of the downlink reference signal reported by the terminal and receiving the antenna attribute of the downlink reference signal reported by the terminal.
An embodiment of the present invention further provides a terminal, including:
the processor is used for measuring at least one downlink reference signal sent by a base station, acquiring a measurement result of the downlink reference signal and determining the antenna attribute for receiving the downlink reference signal;
and the transceiver is used for reporting the measurement result of the downlink reference signal and reporting and receiving the antenna attribute of the downlink reference signal.
An embodiment of the present invention further provides a base station, including:
a transceiver for transmitting at least one downlink reference signal to a terminal; and receiving a measurement result of the downlink reference signal sent by the terminal, and receiving an antenna attribute for receiving the downlink reference signal reported by the terminal.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method are implemented as described above.
According to the method and the device for managing the downlink beams, the antenna panel/antenna group information is introduced to be reported in the downlink beam management process, so that the base station can know which beam is used by the terminal to receive the downlink reference signal (such as CSI-RS), and the problem that the uplink transmission performance of the terminal is influenced due to the fact that a plurality of SRS which cannot be simultaneously transmitted by subsequent configuration can be avoided.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic diagram of a PUSCH beam determination procedure based on non-codebook transmission in the prior art;
fig. 2 is a diagram illustrating a prior art terminal transmitting SRS;
FIG. 3 is another diagram illustrating a prior art terminal transmitting an SRS;
fig. 4 is a schematic view of an application scenario of the method for downlink beam management according to the embodiment of the present invention;
fig. 5 is a flowchart of a method for downlink beam management according to an embodiment of the present invention;
fig. 6 is another flowchart of a method for downlink beam management according to an embodiment of the present invention;
fig. 7 is one of the structural diagrams of a terminal according to an embodiment of the present invention;
fig. 8 is a second structural diagram of a terminal according to an embodiment of the present invention;
FIG. 9 is a block diagram of a base station according to an embodiment of the present invention;
fig. 10 is a second structural diagram of a base station according to an embodiment of the invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. In the description and in the claims "and/or" means at least one of the connected objects.
The techniques described herein are not limited to the evolved (L TE-Advanced, L TE-a) System of the long term Evolution (L ong Time Evolution, L TE)/L TE, and may also be used in various wireless Communication systems such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (Frequency Division Multiple Access, FDMA), orthogonal Frequency Division Multiple Access (orthogonal Frequency Division Multiple Access, OFDMA), Single carrier Frequency Division Multiple Access (SC-Multiple Access), and other systems although these may also be used in CDMA systems such as the CDMA2000, Universal terrestrial Radio Access (Radio Access), UMTS-Telecommunications System (UMTS) and Mobile Radio Access System (UMTS) systems such as the UMTS System, UMTS-Broadband Access (UMTS-Telecommunications System) System (UMTS-802-Advanced, CDMA) System (UMTS-Radio Access, UMTS-Telecommunications System) System (UMTS-b), and other systems such as the UMTS-Radio Access System) System (UMTS-Radio Access System) and Mobile Radio Access System (UMTS-Radio Access System) System (UMTS-802, UMTS-802-15, UMTS-b) System, UMTS-CDMA, UMTS-Broadband-Radio System (UMTS-b) and other systems may also be used in the above the CDMA System (UMTS-Radio Access System ) System, UMTS-Radio Access System, UMTS-802-b) and other systems.
The following description provides examples and does not limit the scope, applicability, or configuration set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
Referring to fig. 4, fig. 4 shows a block diagram of a wireless communication system to which AN embodiment of the present invention is applicable, where the wireless communication system includes a terminal 41 and a Base Station 42, where the terminal 41 may also be referred to as a user terminal or a User Equipment (UE), the terminal 41 may be a terminal side Device such as a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a laptop Computer (L ap Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a vehicle-mounted Device, and it is noted that a specific type of the terminal 41 is not limited in the embodiment of the present invention, the Base Station 42 may be various Base stations and/or core network elements, where the above Base stations may be 5G and later versions of Base stations (e.g., gbb, 5G NR, etc.), or Base stations in other communication systems (e.g., eNB, W L AN, or other Base stations, and so on which may be referred to as eNB, W42, eNB, or other Base Station, or eNB, Station, and so long as a Service node B, a specific term, a home node B, a wlan, where the invention is not limited in the present invention, a home network element, a node B, a specific type of the invention.
The base stations 42 may communicate with the terminals 41 under the control of a base station controller, which may be part of the core network or some of the base stations in various examples. Some base stations may communicate control information or user data with the core network through a backhaul. In some examples, some of the base stations may communicate with each other, directly or indirectly, over backhaul links, which may be wired or wireless communication links. A wireless communication system may support operation on multiple carriers (waveform signals of different frequencies). A multi-carrier transmitter can transmit modulated signals on the multiple carriers simultaneously. For example, each communication link may be a multi-carrier signal modulated according to various radio technologies. Each modulated signal may be transmitted on a different carrier and may carry control information (e.g., reference signals, control channels, etc.), overhead information, data, and so on.
The wireless communication system may include different types of base stations (e.g., macro, micro, or pico base stations). the base stations may also utilize different radio technologies, such as cellular or W L AN radio access technologies.
A communication link in a wireless communication system may include an Uplink for carrying Uplink (U L) transmissions (e.g., from terminal 41 to base station 42) or a Downlink for carrying Downlink (D L) transmissions (e.g., from base station 42 to terminal 41). U L transmissions may also be referred to as reverse link transmissions and D L transmissions may also be referred to as forward link transmissions.
As described in the background art, when the uplink and downlink are reciprocal and the PUSCH is transmitted based on the non-codebook, there may be a case where 4 SRSs configured by the base station (gNB) cannot be simultaneously transmitted, thereby directly affecting the uplink transmission performance of the terminal. This problem arises because the base station does not know which panel the terminal is using to receive the CSI-RS, which leads to improper configuration and subsequent inability to determine which SRS cannot be transmitted simultaneously. In order to solve the problem, in the embodiment of the present invention, in the downlink beam management process, information reporting of the Panel ID (or the antenna group) is introduced, so that the base station knows which beam is used by the terminal to receive the downlink reference signal (e.g., CSI-RS), thereby avoiding a problem that subsequent configuration of multiple SRSs that cannot be simultaneously transmitted affects the uplink transmission performance of the terminal.
Referring to fig. 5, a method for downlink beam management according to an embodiment of the present invention, when applied to a terminal side, includes:
step 51, the terminal measures at least one downlink reference signal sent by the base station, obtains a measurement result of the downlink reference signal, and determines an antenna attribute for receiving the downlink reference signal.
Here, the antenna properties may include: an identification of an antenna panel to which the antenna belongs, an identification of an antenna group to which the antenna belongs, or a first parameter that may reflect the identification of the antenna panel/antenna group. Here, the downlink reference signal is a channel state information reference signal (CSI-RS) or a synchronization signal block (SSB, SS/PBCH block). Generally, the SSB is composed of a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a PBCH in common.
And step 52, the terminal reports the measurement result of the downlink reference signal to a base station, and reports the antenna attribute for receiving the downlink reference signal.
In the above steps, the embodiment of the present invention introduces a characteristic of an antenna attribute for receiving a downlink reference signal, and specifically, the antenna attribute may be an antenna panel (panel) to which an antenna for receiving the downlink reference signal belongs, and/or an antenna group to which the antenna for receiving the downlink reference signal belongs. For example, an antenna panel may be represented using an Identification (ID) of the antenna panel, and an antenna group may be represented using an Identification (ID) of the antenna group. Additionally, the antenna properties may also be represented by a first parameter that may reflect the identity of the antenna panel/antenna group. The first parameter includes, but is not limited to, any one of parameters such as an SRS set, an SRS resource, a downlink reference signal set, a downlink reference signal resource, or a group of specific beams adopted by the terminal.
In the embodiment of the present invention, the terminal may notify the base station of the antenna attribute for receiving the downlink reference signal in an explicit indication or implicit indication manner. For example, the terminal notifies the base station of the antenna attribute for receiving the downlink reference signal through the identification of the antenna panel/antenna group, so that an explicit indication mode can be implemented. The terminal may further notify the base station of the antenna attribute for receiving the downlink reference signal according to a first parameter that may reflect an identifier of an antenna panel/antenna group, and at this time, the base station needs to determine the antenna attribute according to the first parameter, thereby implementing an implicit indication.
Specifically, when the indication is explicit, the terminal may send a predetermined message to the base station, where a predetermined field in the predetermined message carries the antenna attribute. For another example, when the indication is performed in an implicit manner, the terminal may implicitly indicate the antenna attribute for receiving the downlink reference signal by using a first parameter, such as an SRS set, an SRS resource, a downlink reference signal set, a downlink reference signal resource, or a group of specific beams, adopted by the terminal. At this time, the first parameter for implicitly indicating the antenna attribute has a predetermined corresponding relationship with the identifier of the antenna panel/antenna group, and the base station may determine the identifier of the antenna panel/antenna group corresponding to the first parameter according to the first parameter, such as the SRS set, the SRS resource, the downlink reference signal set, the downlink reference signal resource, or a group of specific beams, adopted by the terminal, so as to obtain the antenna attribute of the terminal for receiving the downlink reference signal.
Through the steps, in the downlink beam management process, the embodiment of the invention introduces the report of the antenna panel/antenna group information, so that the base station knows which beam is used by the terminal to receive the downlink reference signal (such as CSI-RS), thereby avoiding the problem that the uplink transmission performance of the terminal is influenced due to the fact that a plurality of SRS which cannot be simultaneously transmitted by the subsequent configuration.
In the embodiment of the present invention, the terminal may also report the number of antenna panels and/or the total number of antenna groups supported by the terminal to the base station, and specifically, the terminal may report the number of antenna panels and/or the total number of antenna groups in an explicit indication or implicit indication manner.
For example, when reporting in an explicit manner, the terminal may report the number N of antenna panels of the terminal through a first field in a predetermined signaling message1And/or reporting the number N of antenna groups of the terminal through a second field in a preset signaling message2。
Similarly, when reporting is performed in an implicit manner, the terminal reports the number N of antenna panels of the terminal through a second parameter that can reflect the number of antenna panels/antenna groups1And/or the number N of antenna groups of the terminal2. For example, the terminal may utilize the SRS set, SRS resources, downlink reference signal set, and downlink reference signal resources adopted by the terminalA second parameter, such as a source or a set of specific beams, to implicitly indicate said number N1And/or the number N2. The type of the parameter used for each of the second parameter and the first parameter may be the same or different. At this time, the above-mentioned means for implicitly indicating the number N1And/or the number N2With said number N1And/or the number N2The base station can determine the number N corresponding to the information according to the information such as the SRS set, the SRS resource, the downlink reference signal set, the downlink reference signal resource or a group of specific beams and the like adopted by the terminal1And/or the number N2Thereby obtaining the number of antenna panels and/or the total number of antenna groups of the terminal.
Preferably, before reporting the first and second numbers, the terminal may further determine the number N of antenna panels of the terminal according to the number of antenna panels of the terminal1Determining a first number of bits of the first field, and/or determining a number N of antenna groups according to the terminal2Determining a second bit number of the second field, wherein the first bit number is log2N1Rounded up, the second number of bits is log2N2Rounding up.
In this embodiment of the present invention, the terminal may further receive a third parameter sent by the base station, where the third parameter is used to indicate a first association relationship between the SRS and the downlink reference signal, and in the first association relationship, the number of downlink reference signals under the same antenna attribute does not exceed the maximum number of streams that are simultaneously sent and supported by the antenna attribute. Here, the third parameter may specifically be some predefined parameter in the RRC signaling message.
In this embodiment of the present invention, the terminal may determine, according to the first association relationship, a target downlink reference signal associated with a target SRS, and determine, according to a receiving antenna attribute of the target downlink reference signal, a transmitting antenna attribute adopted by the target SRS, where the target SRS is an SRS referred to by the transmitting antenna attribute of a physical uplink shared channel, PUSCH. Here, the reception antenna attribute may include an antenna panel to which the reception antenna belongs and/or an antenna group to which the reception antenna belongs, and the transmission antenna attribute may include an antenna panel to which the transmission antenna belongs and/or an antenna group to which the transmission antenna belongs.
Specifically, the terminal of the embodiment of the present invention may further send at least one Sounding Reference Signal (SRS) to the base station; then receiving sounding reference Signal Resource Indication (SRI) information, wherein the SRI information is used for indicating a target SRS referred by a sending antenna attribute of a PUSCH; and then, according to the first association relationship, determining a target downlink reference signal associated with the target SRS, and according to the receiving antenna attribute of the target downlink reference signal, determining the transmitting antenna attribute adopted by the target SRS, thereby realizing the management process of the PUSCH transmitting beam.
The method according to the embodiment of the present invention is described above from the terminal side, and is further described below from the base station side.
Referring to fig. 6, an embodiment of the present invention provides a method for downlink beam management, applied to a base station side, including:
and step 61, the base station sends at least one downlink reference signal to the terminal.
Here, the downlink reference signal is a CSI-RS or a SSB.
Step 62, the base station receives the measurement result of the downlink reference signal reported by the terminal, and receives the antenna attribute of the downlink reference signal reported by the terminal.
Here, the antenna properties may include: an identification of an antenna panel to which the antenna belongs, an identification of an antenna group to which the antenna belongs, or a first parameter that may reflect the identification of the antenna panel/antenna group. The downlink reference signal may specifically be a channel state information reference signal CSI-RS or a synchronization signal block SSB. For a specific implicit indication manner, reference may be made to the above description, and details are not described herein.
Specifically, the base station may receive the antenna attribute of receiving the downlink reference signal reported by the terminal in an explicit indication or implicit indication manner. For example, the base station may receive the identifier of the antenna panel/antenna group reported by the terminal, and obtain the antenna attribute for receiving the downlink reference signal; or, the base station may obtain the antenna attribute for receiving the downlink reference signal through the first parameter of the terminal, which may reflect the identifier of the antenna panel/antenna group.
Through the steps, the base station can obtain which beam is used by the terminal to receive the downlink reference signal (such as CSI-RS), so that the problem that the uplink transmission performance of the terminal is influenced due to the fact that a plurality of SRS which cannot be simultaneously transmitted are subsequently configured can be avoided.
Preferably, the base station in the embodiment of the present invention may further receive the number N of antenna panels of the terminal, which is reported by the terminal through the first field in the predetermined signaling message1And/or the number N of antenna groups of the terminal reported through a second field in a predetermined signaling message2。
Preferably, the base station in the embodiment of the present invention may further receive the number N of antenna panels of the terminal, which is reported by the terminal in an implicit indication manner1And/or the number N of antenna groups of the terminal2. Specifically, the base station may obtain the number N of antenna panels of the terminal according to a second parameter of the terminal, which may reflect the number of antenna panels/antenna groups1And/or the number N of antenna groups of the terminal2。
Preferably, the base station in the embodiment of the present invention may further send a third parameter to the terminal, where the third parameter is used to indicate a first association relationship between the SRS and the downlink reference signal, and in the first association relationship, the number of downlink reference signals under the same antenna attribute does not exceed the maximum number of streams that are simultaneously sent and supported by the antenna attribute.
Preferably, the base station of the embodiment of the present invention may further receive at least one Sounding Reference Signal (SRS) sent by the terminal; selecting a target Sounding Reference Signal (SRS) referred by a transmitting antenna attribute of a Physical Uplink Shared Channel (PUSCH) according to the at least one SRS; then, sounding reference Signal Resource Indication (SRI) information is sent to the terminal, and the SRI information is used for indicating the target SRS.
As can be seen from the above, in the method for managing downlink beams in the embodiment of the present invention, 1) a terminal (UE) may report the number of Antenna panels or the number of Antenna groups, and introduce a Panel ID or an Antenna group ID parameter, where the length of the ID may be determined according to the number. In addition, in the downstream beam management stage, the UE measures the CSI-RS and reports the CSI-RS received by the UE in which Panel while reporting the CSI-RS measurement value, or, in the downstream beam management stage, the UE measures the SSB and reports the SSB received by the UE in which Panel while reporting the SSB measurement value.
Based on the above method, for PUSCH transmission based on a Non-codebook (Non-codebook) when uplink and downlink are reciprocal, for example, it is assumed that the UE antenna panel capability can support 2 panels, and 4 streams are transmitted at most. Therefore, when the base station configures the reference signal CSI-RS of the SRS, the CSI-RS0 and the CSI-RS1 received on the Panel0 can be configured to the SRS0 and the SRS1, and the CSI-RS2 and the CSI-RS3 received on the Panel2 can be configured to the SRS2 and the SRS3, so that the base station can perform parameter configuration according to the terminal capability, and the problem that the uplink transmission performance of the terminal is affected due to the fact that the terminal is configured with a plurality of SRSs which cannot be transmitted simultaneously can be avoided.
Various methods of embodiments of the present invention have been described above. An apparatus for carrying out the above method is further provided below.
An embodiment of the present invention provides a terminal shown in fig. 7. Referring to fig. 7, an embodiment of the present invention provides a structural diagram of a terminal 700, including:
the processor 71 is configured to measure at least one downlink reference signal sent by a base station, obtain a measurement result of the downlink reference signal, and determine an antenna attribute for receiving the downlink reference signal;
the transceiver 72 is configured to report a measurement result of the downlink reference signal and report an antenna attribute for receiving the downlink reference signal.
Preferably, the transceiver 72 is further configured to notify the base station of the antenna attribute of receiving the downlink reference signal through the identifier of the antenna panel/antenna group or through a first parameter that can reflect the identifier of the antenna panel/antenna group.
Preferably, the antenna attributes include: an identification of an antenna panel to which the antenna belongs, an identification of an antenna group to which the antenna belongs, or a first parameter that may reflect the identification of the antenna panel/antenna group.
Preferably, the downlink reference signal is a channel state information reference signal CSI-RS or a synchronization signal block SSB.
Preferably, the transceiver 72 is further configured to report the number N of antenna panels of the terminal through a first field in a predetermined signaling message1And/or reporting the number N of antenna groups of the terminal through a second field in a preset signaling message2。
Preferably, the transceiver 72 is further configured to report the number N of antenna panels of the terminal through a second parameter that can reflect the number of antenna panels/antenna groups1And/or the number N of antenna groups of the terminal2。
Preferably, the processor 71 is further configured to report the number N1And/or the number N2Before, the number of antenna panels N according to the present terminal1Determining a first number of bits of the first field, and/or determining a number N of antenna groups according to the terminal2Determining a second bit number of the second field, wherein the first bit number is log2N1Rounded up, the second number of bits is log2N2Rounding up.
Preferably, the transceiver 72 is further configured to transmit at least one sounding reference signal SRS to a base station; receiving a third parameter sent by a base station, where the third parameter is used to indicate a first association relationship between an SRS and the downlink reference signal, and in the first association relationship, the number of downlink reference signals under the same antenna attribute does not exceed the maximum number of streams that are simultaneously sent and supported by the antenna attribute.
Preferably, the processor 71 is further configured to determine, according to the first association relationship, a target downlink reference signal associated with the target SRS, and determine, according to a receiving antenna attribute of the target downlink reference signal, a transmitting antenna attribute adopted by the target SRS, where the target SRS is an SRS referred to by the transmitting antenna attribute of a physical uplink shared channel, PUSCH. .
Referring to fig. 8, another schematic structural diagram of a terminal according to an embodiment of the present invention is shown, where the terminal 800 includes: a processor 801, a transceiver 802, a memory 803, a user interface 804 and a bus interface.
In this embodiment of the present invention, the terminal 800 further includes: computer programs stored on the memory 803 and executable on the processor 801.
The processor 801 is configured to read a program in the memory, and execute the following processes: measuring at least one downlink reference signal sent by a base station, acquiring a measurement result of the downlink reference signal, and determining an antenna attribute for receiving the downlink reference signal;
the transceiver 802 is configured to report a measurement result of the downlink reference signal and report an antenna attribute for receiving the downlink reference signal.
In FIG. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 801, and various circuits, represented by the memory 803, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 802 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 804 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 801 is responsible for managing the bus architecture and general processing, and the memory 803 may store data used by the processor 801 in performing operations.
Preferably, the antenna attributes include: an identification of an antenna panel to which the antenna belongs, an identification of an antenna group to which the antenna belongs, or a first parameter that may reflect the identification of the antenna panel/antenna group. The downlink reference signal is a channel state information reference signal CSI-RS or a synchronous signal block SSB.
Preferably, the transceiver 802 is further configured to notify the base station of the antenna attribute of receiving the downlink reference signal through the identifier of the antenna panel/antenna group or through a first parameter that can reflect the identifier of the antenna panel/antenna group.
Preferably, the transceiver 802 is further configured to report the number N of antenna panels of the terminal through a first field in a predetermined signaling message1And/or reporting the number N of antenna groups of the terminal through a second field in a preset signaling message2。
Preferably, the transceiver 802 is further configured to report the number N of antenna panels of the terminal through a second parameter that can reflect the number of antenna panels/antenna groups1And/or the number N of antenna groups of the terminal2。
Preferably, the processor 801 is further configured to report the number N1And/or the number N2Before, the number of antenna panels N according to the present terminal1Determining a first number of bits of the first field, and/or determining a number N of antenna groups according to the terminal2Determining a second bit number of the second field, wherein the first bit number is log2N1Rounded up, the second number of bits is log2N2Rounding up.
Preferably, the transceiver 802 is further configured to receive a third parameter sent by the base station, where the third parameter is used to indicate a first association relationship between the SRS and the downlink reference signal, and in the first association relationship, the number of downlink reference signals under the same antenna attribute does not exceed the maximum number of streams that are simultaneously sent and supported by the antenna attribute.
Preferably, the processor 801 is further configured to determine, according to the first association relationship, a target downlink reference signal associated with the target SRS, and determine, according to a receiving antenna attribute of the target downlink reference signal, a transmitting antenna attribute adopted by the target SRS, where the target SRS is an SRS referred to by the transmitting antenna attribute of a physical uplink shared channel, PUSCH.
An embodiment of the present invention provides a base station shown in fig. 9. Referring to fig. 9, an embodiment of the present invention provides a structural schematic diagram of a base station 90, including a transceiver 92 and a processor 91, wherein:
a transceiver 92, configured to transmit at least one downlink reference signal to a terminal; and receiving the measurement result of the downlink reference signal reported by the terminal and receiving the antenna attribute of the downlink reference signal reported by the terminal.
Preferably, the antenna attributes include: an identification of an antenna panel to which the antenna belongs, an identification of an antenna group to which the antenna belongs, or a first parameter that may reflect the identification of the antenna panel/antenna group. The downlink reference signal is a channel state information reference signal CSI-RS or a synchronous signal block SSB.
Preferably, the transceiver 92 is further configured to receive an identifier of the antenna panel/antenna group reported by the terminal, or obtain an antenna attribute for receiving the downlink reference signal through a first parameter of the terminal, where the first parameter may reflect the identifier of the antenna panel/antenna group.
Preferably, the transceiver 92 is further configured to receive the number N of antenna panels of the terminal reported by the terminal through a first field in a predetermined signaling message1And/or the number N of antenna groups of the terminal reported through a second field in a predetermined signaling message2。
Preferably, the transceiver 92 is further configured to obtain the number N of antenna panels of the terminal according to a second parameter of the terminal, which can reflect the number of antenna panels/antenna groups1And/or the number N of antenna groups of the terminal2。
Preferably, the transceiver 92 is further configured to send a third parameter to the terminal, where the third parameter is used to indicate a first association relationship between the SRS and the downlink reference signal, and in the first association relationship, the number of downlink reference signals under the same antenna attribute does not exceed the maximum number of streams that are simultaneously sent and supported by the antenna attribute.
Preferably, the transceiver 92 is further configured to receive at least one sounding reference signal SRS sent by the terminal;
the processor 91 is configured to select, according to the at least one sounding reference signal SRS, a target SRS referred to by a transmission antenna attribute of a physical uplink shared channel PUSCH; and sending sounding reference Signal Resource Indication (SRI) information to the terminal, wherein the SRI information is used for indicating the target SRS.
Referring to fig. 10, another schematic structural diagram of a base station 1000 according to an embodiment of the present invention includes: a processor 1001, a transceiver 1002, a memory 1003, and a bus interface, wherein:
the transceiver 1002 is configured to send at least one downlink reference signal to a terminal; and receiving the measurement result of the downlink reference signal reported by the terminal and receiving the antenna attribute of the downlink reference signal reported by the terminal.
In fig. 10, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1001 and various circuits of memory represented by memory 1003 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1002 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.
The processor 1001 is responsible for managing a bus architecture and general processes, and the memory 1003 may store data used by the processor 1001 in performing operations.
Preferably, the antenna attributes include: an identification of an antenna panel to which the antenna belongs, an identification of an antenna group to which the antenna belongs, or a first parameter that may reflect the identification of the antenna panel/antenna group. The downlink reference signal is a channel state information reference signal CSI-RS or a synchronous signal block SSB.
Preferably, the transceiver 1002 is further configured to receive an identifier of the antenna panel/antenna group reported by the terminal, or obtain an antenna attribute for receiving the downlink reference signal through a first parameter of the terminal, where the first parameter can reflect the identifier of the antenna panel/antenna group. .
Preferably, the transceiver 1002 is further configured to receive the number N of antenna panels of the terminal, which is reported by the terminal through a first field in a predetermined signaling message1And/or the number N of antenna groups of the terminal reported through a second field in a predetermined signaling message2。
Preferably, the transceiver 1002 is further configured to obtain the number N of antenna panels of the terminal according to a second parameter of the terminal, where the second parameter can reflect the number of antenna panels/antenna groups1And/or the number N of antenna groups of the terminal2。
Preferably, the transceiver 1002 is further configured to send a third parameter to the terminal, where the third parameter is used to indicate a first association relationship between the SRS and the downlink reference signal, and in the first association relationship, the number of downlink reference signals under the same antenna attribute does not exceed a maximum number of streams that are simultaneously sent and supported by the antenna attribute.
Preferably, the transceiver 1002 is further configured to receive at least one sounding reference signal, SRS, sent by the terminal;
the processor 1001 is configured to read a program in a memory, and execute the following procedure to select, according to the at least one sounding reference signal SRS, a target SRS referred to by a transmission antenna attribute of a physical uplink shared channel PUSCH; and sending sounding reference Signal Resource Indication (SRI) information to the terminal, wherein the SRI information is used for indicating the target SRS.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (36)

1. A method for managing downlink beams is applied to a terminal side, and is characterized by comprising the following steps:
a terminal measures at least one downlink reference signal sent by a base station, obtains the measurement result of the downlink reference signal and determines the antenna attribute for receiving the downlink reference signal;
and the terminal reports the measurement result of the downlink reference signal to a base station and reports the antenna attribute for receiving the downlink reference signal.
2. The method of claim 1, wherein reporting the antenna attribute for receiving the downlink reference signal comprises:
and the terminal informs the base station of the antenna attribute for receiving the downlink reference signal through the identification of the antenna panel/antenna group or through a first parameter which can reflect the identification of the antenna panel/antenna group.
3. The method of claim 1,
the antenna attributes include: an identification of an antenna panel to which the antenna belongs, an identification of an antenna group to which the antenna belongs, or a first parameter that may reflect the identification of the antenna panel/antenna group.
4. The method of claim 1, wherein the downlink reference signal is a channel state information reference signal (CSI-RS) or a Synchronization Signal Block (SSB).
5. The method of claim 1, further comprising:
the terminal reports the number N of the antenna panels of the terminal through a first field in a preset signaling message1And/or reporting the number N of antenna groups of the terminal through a second field in a preset signaling message2。
6. The method of claim 1, further comprising:
the terminal reports the number N of the antenna panels of the terminal through a second parameter capable of reflecting the number of the antenna panels/antenna groups1And/or the number N of antenna groups of the terminal2。
7. The method of claim 5 or 6, wherein the number N is reported1And/or the number N2Previously, the method further comprises:
the terminal is according to the number N of the antenna panels of the terminal1Determining a first number of bits of the first field, and/or determining a number N of antenna groups according to the terminal2Determining a second bit number of the second field, wherein the first bit number is log2N1Rounded up, the second number of bits is log2N2Rounding up.
8. The method of any of claims 1 to 6, further comprising:
receiving a third parameter sent by a base station, where the third parameter is used to indicate a first association relationship between an SRS and the downlink reference signal, and in the first association relationship, the number of downlink reference signals under the same antenna attribute does not exceed the maximum number of streams that are simultaneously sent and supported by the antenna attribute.
9. The method of claim 8, further comprising:
and determining a target downlink reference signal associated with a target SRS according to the first association relation, and determining a transmitting antenna attribute adopted by the target SRS according to a receiving antenna attribute of the target downlink reference signal, wherein the target SRS is an SRS referred to by the transmitting antenna attribute of a Physical Uplink Shared Channel (PUSCH).
10. A method for managing downlink beams is applied to a base station side, and is characterized by comprising the following steps:
transmitting at least one downlink reference signal to a terminal;
and receiving the measurement result of the downlink reference signal reported by the terminal and receiving the antenna attribute of the downlink reference signal reported by the terminal.
11. The method of claim 10, wherein receiving the antenna attribute reported by the terminal for receiving the downlink reference signal comprises:
and receiving the identifier of the antenna panel/antenna group reported by the terminal, or obtaining the antenna attribute for receiving the downlink reference signal through the first parameter of the terminal, which can reflect the identifier of the antenna panel/antenna group.
12. The method of claim 10, wherein the antenna properties comprise: an identification of an antenna panel to which the antenna belongs, an identification of an antenna group to which the antenna belongs, or a first parameter that may reflect the identification of the antenna panel/antenna group.
13. The method of claim 10, wherein the downlink reference signal is a channel state information reference signal (CSI-RS) or a Synchronization Signal Block (SSB).
14. The method of claim 10, further comprising:
receiving the number N of the antenna panels of the terminal reported by the terminal through a first field in a preset signaling message1And/or the number N of antenna groups of the terminal reported through a second field in a predetermined signaling message2。
15. The method of claim 10, further comprising:
obtaining the number N of the antenna panels of the terminal according to a second parameter of the terminal, which can reflect the number of the antenna panels/antenna groups1And/or the number N of antenna groups of the terminal2。
16. The method of claim 14 or 15, further comprising:
and sending a third parameter to the terminal, where the third parameter is used to indicate a first association relationship between the SRS and the downlink reference signal, and in the first association relationship, the number of downlink reference signals under the same antenna attribute does not exceed the maximum number of streams that are simultaneously sent and supported by the antenna attribute.
17. The method of claim 10, further comprising:
receiving at least one Sounding Reference Signal (SRS) sent by the terminal;
selecting a target SRS referred by the transmitting antenna attribute of a Physical Uplink Shared Channel (PUSCH) according to the at least one sounding reference signal SRS;
and sending sounding reference Signal Resource Indication (SRI) information to the terminal, wherein the SRI information is used for indicating the target SRS.
18. A terminal, comprising:
the processor is used for measuring at least one downlink reference signal sent by a base station, acquiring a measurement result of the downlink reference signal and determining the antenna attribute for receiving the downlink reference signal;
and the transceiver is used for reporting the measurement result of the downlink reference signal and reporting and receiving the antenna attribute of the downlink reference signal.
19. The terminal of claim 18,
the transceiver is further configured to notify the base station of the antenna attribute of receiving the downlink reference signal through the identifier of the antenna panel/antenna group or through a first parameter that may reflect the identifier of the antenna panel/antenna group.
20. The terminal of claim 18,
the antenna attributes include: an identification of an antenna panel to which the antenna belongs, an identification of an antenna group to which the antenna belongs, or a first parameter that may reflect the identification of the antenna panel/antenna group.
21. The terminal of claim 18, wherein the downlink reference signal is a channel state information reference signal (CSI-RS) or a Synchronization Signal Block (SSB).
22. The terminal of claim 18,
the transceiver is further configured to report the number N of antenna panels of the terminal through a first field in a predetermined signaling message1And/or reporting the number N of antenna groups of the terminal through a second field in a preset signaling message2。
23. The terminal of claim 18,
the transceiver is further configured to report the number N of antenna panels of the terminal through a second parameter that can reflect the number of antenna panels/antenna groups1And/or the number N of antenna groups of the terminal2。
24. The terminal according to claim 22 or 23,
the processor is further configured to report the number N1And/or the number N2Before, the number of antenna panels N according to the present terminal1Determining a first number of bits of the first field, and/or determining a number N of antenna groups according to the terminal2Determining a second bit number of the second field, wherein the first bit number is log2N1Rounded up, the second number of bits is log2N2Rounding up.
25. The terminal according to any of the claims 18 to 23,
the transceiver is further configured to receive a third parameter sent by the base station, where the third parameter is used to indicate a first association relationship between the SRS and the downlink reference signal, and in the first association relationship, the number of downlink reference signals under the same antenna attribute does not exceed the maximum number of streams that are simultaneously sent and supported by the antenna attribute.
26. The terminal of claim 25,
the processor is further configured to determine, according to the first association relationship, a target downlink reference signal associated with the target SRS, and determine, according to a receiving antenna attribute of the target downlink reference signal, a transmitting antenna attribute adopted by the target SRS, where the target SRS is an SRS referred to by the transmitting antenna attribute of a physical uplink shared channel, PUSCH.
27. A base station, comprising:
a transceiver for transmitting at least one downlink reference signal to a terminal; and receiving a measurement result of the downlink reference signal sent by the terminal, and receiving an antenna attribute for receiving the downlink reference signal reported by the terminal.
28. The base station of claim 27,
the transceiver is further configured to receive an identifier of the antenna panel/antenna group reported by the terminal, or obtain an antenna attribute for receiving the downlink reference signal through a first parameter of the terminal, where the first parameter may reflect the identifier of the antenna panel/antenna group.
29. The base station of claim 27, wherein the antenna attributes comprise: an identification of an antenna panel to which the antenna belongs, an identification of an antenna group to which the antenna belongs, or a first parameter that may reflect the identification of the antenna panel/antenna group.
30. The base station of claim 27, wherein the downlink reference signal is a channel state information reference signal (CSI-RS) or a Synchronization Signal Block (SSB).
31. The base station of claim 27,
the transceiver is further configured to receive the number N of antenna panels of the terminal reported by the terminal through a first field in a predetermined signaling message1And/or the number N of antenna groups of the terminal reported through a second field in a predetermined signaling message2。
32. The base station of claim 27,
the transceiver is further configured to obtain the number N of antenna panels of the terminal according to a second parameter of the terminal, where the second parameter may reflect the number of antenna panels/antenna groups1And/or the number N of antenna groups of the terminal2。
33. The base station of claim 31 or 32,
the transceiver is further configured to send a third parameter to the terminal, where the third parameter is used to indicate a first association relationship between the SRS and the downlink reference signal, and in the first association relationship, the number of downlink reference signals under the same antenna attribute does not exceed the maximum number of streams that are simultaneously sent and supported by the antenna attribute.
34. The base station of claim 27,
the transceiver is further configured to receive at least one Sounding Reference Signal (SRS) sent by the terminal;
the base station further comprises:
the processor is used for selecting a target SRS referred by the transmitting antenna attribute of a Physical Uplink Shared Channel (PUSCH) according to the at least one sounding reference signal SRS; and sending sounding reference Signal Resource Indication (SRI) information to the terminal, wherein the SRI information is used for indicating the target SRS.
35. A communication device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method of downlink beam management according to any of claims 1 to 17.
36. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method for downlink beam management according to any one of claims 1 to 17.
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