Beam instruction method, device, terminal and base station

Abstract

The embodiments of the present disclosure disclose a beam instruction method, an apparatus, a terminal, and a base station, which include: receiving a first configuration for each candidate reference carrier in a carrier list, the first configuration including a transmission configuration instruction TCI state pool configured for each of the candidate reference carriers; determining a reference carrier from the candidate reference carriers; receiving a common TCI state index transmitted from a base station, the common TCI state index being used to indicate a TCI state in a TCI state pool corresponding to the reference carrier; and determining a beam direction in which a channel and / or a reference signal is transmitted on each carrier in the carrier list based on the TCI state indicated by the common TCI state index.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This disclosure claims priority to a Chinese patent application filed in China on August 6, 2021, with application number 202110904310.6, the entire contents of which are incorporated herein by reference.

[0002] The present disclosure relates to the field of wireless technology, and in particular to a beam pointing method, an apparatus, a terminal, and a base station. [Background technology]

[0003] In the New Radio (NR) technology protocol, for the Physical Uplink Control Channel (PUCCH) channel, the base station semi-statically configures spatial relation information (SpatialRelationInfo) in multiple beam directions in the terminal via higher layer signaling and instructs the terminal to activate one of them via the Media Access Control-Control Element (MAC-CE). For the PUSCH, the uplink beam selected by the base station is indirectly indicated via the SpatialRelationInfo of the sounding radio signal (SRS) resource indicated by the SRI domain in the downlink control information (DCI) of dynamic signaling. For the Physical Downlink Control Channel (PDCCH) channel, the base station configures multiple Transmission Configuration Indication (TCI) states for each resource set (CORESET) via higher layer signaling and instructs the terminal to activate one of them via the MAC-CE. For the PDSCH channel, the base station indicates the TCI state, which indicates the beam direction of the channel, via the TCI domain in the DCI signaling.

[0004] Different channels use different beam indication signaling, and each channel performs beam indication independently. Thus, different channels may transmit using different beams. However, an important scenario in practical applications is when multiple channels use the same beam direction. For example, the same beam direction is used between the physical downlink control channel (PDCCH) for resource scheduling and the physical downlink shared channel (PDSCH) for user data transmission, and the uplink control channel (PUCCH) and the uplink data channel (PUSCH) also use the same beam direction. When beam interchangeability exists, the uplink and downlink channels also use the same beam direction. In this case, the current method of independent beam indication increases system complexity and signaling overhead. To overcome the above problems, a method of indicating multiple channel beams using one beam indication signaling has been introduced into current protocols. This method activates a set of TCI states via the MAC-CE and then indicates one of the activated TCI states via DCI.

[0005] In a carrier aggregation (CA) terminal, it is necessary to determine the corresponding beam direction for each component carrier (CC). According to a related technical configuration method, one TCI state pool needs to be configured for each CC. For different CCs, the transmit / receive beam needs to be determined using the corresponding TCI state configured on the CC. This method requires the configuration of multiple TCI state pools, which results in a problem of increased configuration signaling overhead. Summary of the Invention [Problem to be solved by the invention]

[0006] The embodiments of the present disclosure provide a beam direction method, device, terminal, and base station to solve the problem of high configuration signaling overhead due to the TCI state activation method for a terminal in carrier aggregation CA in the related art. [Means for solving the problem]

[0007] An embodiment of the present disclosure provides a beam pointing method performed by a terminal, the method comprising: receiving a first configuration for each candidate reference carrier in a carrier list, the first configuration including a transmission configuration indication TCI state pool configured for each candidate reference carrier; determining a reference carrier from among the candidate reference carriers; receiving a common TCI state index transmitted from a base station, the common TCI state index being used to indicate a TCI state in a TCI state pool corresponding to the reference carrier; and determining a beam direction in which a channel and / or reference signal is transmitted on each carrier in the carrier list based on the TCI state indicated by the common TCI state index.

[0008] Optionally, determining a reference carrier from among the candidate reference carriers for the beam pointing method comprises: receiving a second configuration for each carrier in a carrier list other than the candidate reference carrier, the second configuration including a carrier index; determining the reference carrier from among the candidate reference carriers based on the carrier index.

[0009] Optionally, for the beam pointing method, the method further comprises: The method includes receiving a plurality of carrier lists indicated by a base station through first signaling, where one reference carrier is set in one of the carrier lists.

[0010] Optionally, determining a reference carrier from among the candidate reference carriers for the beam pointing method comprises: receiving second signaling for activating a TCI state transmitted from a base station, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the second signaling; or receiving third signaling for indicating one of the activated TCI states transmitted from the base station, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the third signaling.

[0011] Optionally, determining a reference carrier from among the candidate reference carriers for the beam pointing method comprises: reporting the index indication to a base station; determining the reference carrier from among the candidate reference carriers based on the index indication.

[0012] An embodiment of the present disclosure further provides a beam pointing method performed by a base station, the method comprising: Sending a first configuration corresponding to each candidate reference carrier in a carrier list to the terminal, the first configuration including a transmission configuration indication TCI state pool configured for each candidate reference carrier; determining a reference carrier from among the candidate reference carriers; sending a common TCI state index to a terminal, the common TCI state index being used to indicate a TCI state in a TCI state pool corresponding to the reference carrier; and determining a beam direction in which a channel and / or reference signal is transmitted on each carrier in the carrier list based on the TCI state indicated by the common TCI state index.

[0013] Optionally, determining a reference carrier from among the candidate reference carriers for the beam pointing method comprises: Sending a second configuration corresponding to each carrier in a carrier list other than the candidate reference carrier to a terminal, wherein the second configuration includes a carrier index; determining the reference carrier from among the candidate reference carriers based on the carrier index.

[0014] Optionally, for the beam pointing method, the method further comprises: Indicating a plurality of the carrier lists to the terminal via first signaling, where one reference carrier is set in one of the carrier lists.

[0015] Optionally, determining a reference carrier from among the candidate reference carriers for the beam pointing method comprises: Sending second signaling to the terminal for activating a TCI state, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the second signaling; or The method includes transmitting third signaling to the terminal to indicate one of the activated TCI states, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the third signaling.

[0016] Optionally, determining a reference carrier from among the candidate reference carriers for the beam pointing method comprises: receiving an index indication reported by a terminal; determining the reference carrier from among the candidate reference carriers based on the index indication.

[0017] An embodiment of the present disclosure further provides a terminal including a memory, a transceiver, and a processor, wherein the memory is used to store a computer program, and the transceiver is used to transmit and receive data under the control of the processor; The processor reads the computer program in the memory and receiving a first configuration for each candidate reference carrier in a carrier list, the first configuration including a transmission configuration indication TCI state pool configured for each candidate reference carrier; determining a reference carrier from among the candidate reference carriers; receiving a common TCI state index transmitted from a base station, the common TCI state index being used to indicate a TCI state in a TCI state pool corresponding to the reference carrier; and determining a beam direction in which channel and / or reference signals are transmitted on each carrier in the carrier list based on the TCI state indicated by the common TCI state index.

[0018] Optionally, for the terminal, the processor determining a reference carrier from among the candidate reference carriers comprises: receiving a second configuration for each carrier in a carrier list other than the candidate reference carrier, the second configuration including a carrier index; determining the reference carrier from among the candidate reference carriers based on the carrier index.

[0019] Optionally, for the terminal, the processor further: The base station is used to receive the carrier lists indicated through first signaling, where one reference carrier is set in one of the carrier lists.

[0020] Optionally, for the terminal, the processor determining a reference carrier from among the candidate reference carriers comprises: receiving second signaling for activating a TCI state transmitted from a base station, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the second signaling; or receiving third signaling for indicating one of the activated TCI states transmitted from the base station, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the third signaling.

[0021] Optionally, for the terminal, the processor determining a reference carrier from among the candidate reference carriers comprises: reporting the index indication to a base station; determining the reference carrier from among the candidate reference carriers based on the index indication.

[0022] An embodiment of the present disclosure further provides a base station including a memory, a transceiver, and a processor, wherein the memory is used to store a computer program, and the transceiver is used to transmit and receive data under the control of the processor; The processor reads the computer program in the memory and Sending a first configuration corresponding to each candidate reference carrier in a carrier list to the terminal, the first configuration including a transmission configuration indication TCI state pool configured for each candidate reference carrier; determining a reference carrier from among the candidate reference carriers; sending a common TCI state index to a terminal, the common TCI state index being used to indicate a TCI state in a TCI state pool corresponding to the reference carrier; and determining a beam direction in which channel and / or reference signals are transmitted on each carrier in the carrier list based on the TCI state indicated by the common TCI state index.

[0023] Optionally, for the base station, the processor determining a reference carrier from among the candidate reference carriers comprises: Sending a second configuration corresponding to each carrier in a carrier list other than the candidate reference carrier to a terminal, wherein the second configuration includes a carrier index; determining the reference carrier from among the candidate reference carriers based on the carrier index.

[0024] Optionally, for the base station, the processor further: It is used to indicate the carrier lists to the terminal via first signaling, where one reference carrier is set in one of the carrier lists.

[0025] Optionally, for the base station, the processor determining a reference carrier from among the candidate reference carriers comprises: Sending second signaling to the terminal for activating a TCI state, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the second signaling; or The method includes transmitting third signaling to the terminal to indicate one of the activated TCI states, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the third signaling.

[0026] Optionally, for the base station, the processor determining a reference carrier from among the candidate reference carriers comprises: receiving an index indication reported by a terminal; determining the reference carrier from among the candidate reference carriers based on the index indication.

[0027] An embodiment of the present disclosure further provides a beam directing device applied to a terminal, the device including: a setting receiving unit, a first determining unit, an index receiving unit and a second determining unit; the configuration receiving unit is configured to receive a first configuration for each candidate reference carrier in a carrier list, the first configuration including a transmission configuration indication TCI state pool configured for each candidate reference carrier; a first determination unit configured to determine a reference carrier from among the candidate reference carriers; the index receiving unit is configured to receive a common TCI state index transmitted from a base station, the common TCI state index being used to indicate a TCI state in a TCI state pool corresponding to the reference carrier; The second determination unit is configured to determine, based on the TCI state indicated by the common TCI state index, a beam direction in which a channel and / or a reference signal is transmitted on each carrier in the carrier list.

[0028] An embodiment of the present disclosure further provides a beam directing device applied to a base station, the device including: a setting sending unit, a third determining unit, an index sending unit and a fourth determining unit; the configuration sending unit is configured to send, to the terminal, a first configuration corresponding to each candidate reference carrier in the carrier list, the first configuration including a transmission configuration indication TCI state pool configured for each candidate reference carrier; a third determination unit configured to determine a reference carrier from among the candidate reference carriers; the index sending unit is configured to send a common TCI state index to the terminal, the common TCI state index being used to indicate a TCI state in a TCI state pool corresponding to the reference carrier; The fourth determination unit is configured to determine a beam direction in which a channel and / or a reference signal is transmitted on each carrier in the carrier list based on the TCI state indicated by the common TCI state index.

[0029] An embodiment of the present disclosure further provides a processor-readable storage medium having a computer program stored thereon, the computer program being used to cause the processor to perform any of the beam directing methods described above. [Effects of the Invention]

[0030] By employing the beam direction method according to the embodiment of the present disclosure, it is only necessary to set a TCI state pool for each of the carriers in the carrier list for the candidate reference carriers in the carrier list. When performing beam direction, for all of the carriers in the carrier list, the beam direction is determined based on the TCI in the TCI state pool of one of the candidate reference carriers, and channel and / or reference signal transmission is performed. Therefore, by employing the beam direction method according to the embodiment of the present disclosure, the TCI state pool is set only on the candidate reference carriers in the carrier list, which significantly reduces the overhead of signaling configuration compared to the related art, which requires setting a TCI state pool for each carrier in the carrier list.

[0031] In order to more clearly describe the technical solutions in the embodiments of the present disclosure or related technologies, the following briefly introduces drawings necessary for describing the embodiments or related technologies. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can obtain other drawings based on these drawings without any creative work. [Brief explanation of the drawings]

[0032] [Figure 1] FIG. 1 is a structural diagram of a network system applied to an embodiment of the present disclosure. [Figure 2] 1 is a schematic flow diagram of a beam pointing method according to an embodiment of the present disclosure. [Figure 3] FIG. 10 is a flow diagram of a beam pointing method according to another embodiment of the present disclosure. [Figure 4] FIG. 2 is a structural schematic diagram of the beam directing device according to one embodiment of the present disclosure. [Figure 5] FIG. 2 is a structural schematic diagram of the terminal according to the embodiment of the present disclosure; [Figure 6] FIG. 10 is a structural schematic diagram of the beam directing device of another embodiment of the present disclosure. [Figure 7] FIG. 2 is a structural schematic diagram of the base station according to the embodiment of the present disclosure; DETAILED DESCRIPTION OF THE INVENTION

[0033] The following clearly and completely describes the technical solutions in the embodiments of the present disclosure with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only some embodiments of the present disclosure, not all embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without any creative work are all within the scope of protection of the present disclosure.

[0034] The terms "first," "second," and the like in the specification and claims of this disclosure are not used to describe a particular order or chronology, but rather to distinguish between similar objects. It should be understood that terms so used may be appropriately interchanged so that the embodiments of the disclosure described herein are performed in orders other than those illustrated or described herein, for example. Furthermore, the terms "comprise" and "have," and any variations thereof, are intended to be non-exclusive; for example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units expressly recited, but may include other steps or units not expressly recited or inherent to the process, method, product, or apparatus.

[0035] The term "and / or" in the embodiments of the present disclosure describes a relation between related objects and indicates that three relations can exist, for example, A and / or B can indicate three cases, such as the presence of only A, both A and B, and only B. The symbol " / " generally indicates that the related objects before and after have an "or"-like relation. The term "plurality" in the embodiments of the present disclosure refers to two or more, and other quantifiers have similar meanings.

[0036] In the embodiments of the present disclosure, terms such as "exemplary" or "for example" are used to denote an example, illustration, or explanation. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present disclosure should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of terms such as "exemplary" or "for example" is intended to present the relevant concept in a concrete manner.

[0037] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. A mode indication method, a terminal device, and a network device according to the embodiments of the present disclosure can be applied to a wireless communication system. The wireless communication system can be a system using 5th generation (5G) mobile communication technology (hereinafter, abbreviated as a 5G system). Those skilled in the art will understand that the above-mentioned 5G NR system is merely an example and not a limitation.

[0038] FIG. 1 is a structural diagram of a network system to which an embodiment of the present disclosure can be applied. As shown in FIG. 1, the network system includes a user terminal 11 and a base station 12. The user terminal 11 may be a user equipment (UE), such as a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a mobile internet device (MID), or a wearable device. The embodiment of the present disclosure does not limit the specific type of the user terminal 11. The base station 12 may be a 5G or later version base station (e.g., gNB, 5G NR NB), a base station in another communication system, or may be referred to as a Node B. Although the embodiment of the present disclosure uses only a 5G base station as an example, the specific type of the base station 12 is not limited.

[0039] The embodiments of the present disclosure provide a beam direction method and apparatus to solve the problem of high configuration signaling overhead due to the TCI state activation method for a terminal in carrier aggregation CA in the related art.

[0040] Here, since the method and the apparatus are based on the concept of the same application and the problem-solving principles of the method and the apparatus are similar, the implementations of the apparatus and the method can refer to each other and the description of the overlapping points will be omitted.

[0041] As shown in Figure 2, an embodiment of the present disclosure provides a beam direction method performed by a terminal, which includes the following steps S210 to S240.

[0042] At S210, a first configuration for each candidate reference carrier in a carrier list is received, the first configuration including a transmission configuration indication TCI state pool configured for each candidate reference carrier.

[0043] In S220, a reference carrier is determined from the candidate reference carriers.

[0044] In S230, a common TCI state index transmitted from a base station is received, and the common TCI state index is used to indicate a TCI state in a TCI state pool corresponding to the reference carrier.

[0045] In S240, a beam direction in which a channel and / or a reference signal is transmitted on each carrier in the carrier list is determined based on the TCI state indicated by the common TCI state index.

[0046] By employing the beam direction method according to the embodiment of the present disclosure, it is not necessary to configure a TCI state pool for each carrier in the carrier list, but it is sufficient to configure a TCI state pool for a candidate reference carrier in the carrier list. When performing beam direction, for all carriers in the carrier list, the beam direction is determined based on the TCI in the TCI state pool of one reference carrier among the candidate reference carriers, and channel and / or reference signal transmission is performed. Therefore, by employing the beam direction method according to the embodiment of the present disclosure, the TCI state pool is configured only for the candidate reference carrier in the carrier list, which significantly reduces the overhead due to signaling configuration compared to the related art, which requires configuring a TCI state pool for each carrier in the carrier list.

[0047] In a beam direction method according to an embodiment of the present disclosure, a carrier list includes multiple carriers, and the candidate reference carriers are one or more of the carriers included in the carrier list. In step S210, the terminal receives a first configuration from the base station for each candidate reference carrier in the carrier list, for example, a PDSCH configuration transmitted via RRC signaling. Here, the PDSCH configuration includes a TCI state pool configured for the candidate reference carrier. Optionally, the terminal configures the TCI state pool corresponding to each different candidate reference carrier.

[0048] In step S220, a reference carrier is determined from the candidate reference carriers configured in the TCI status pool, that is, one of the candidate reference carriers is determined as the reference carrier. In the embodiment of the present disclosure, the base station may instruct the reference carrier via signaling, or the terminal may determine and report the reference carrier. Specific embodiments will be described in detail below.

[0049] In step S230, the terminal receives a common TCI state index transmitted from the base station, which is used to indicate a target TCI state, and the target TCI state is one TCI state in the TCI state pool of the reference carrier determined in step S220.

[0050] In step S240, a beam direction is determined based on the target TCI state, and the determined beam direction is adopted for the transmission of channels and / or reference signals on each carrier in the carrier list. In the following description of the embodiments of the present disclosure, the carrier in the carrier list to which the TCI state pool is set when receiving the first configuration is referred to as the candidate reference carrier, and the carrier selected from the candidate reference carriers based on the instruction of the base station or the decision of the terminal is referred to as the reference carrier.

[0051] In an embodiment of the present disclosure, optionally, after step S240, the method further comprises: Using the determined beam direction, transmitting a channel and / or a reference signal on all carriers in the carrier list.

[0052] For the beam direction method according to the embodiment of the present disclosure, the candidate reference carrier may be a part of the carriers recorded in the carrier list, i.e., the TCI status pool may be set only for a part of the carriers in the carrier list. The reference carrier determined from among the candidate reference carriers is one of the candidate reference carriers.

[0053] Optionally, in the carrier list, the number of candidate reference carriers is one or at least two, and the specific number is not limited.

[0054] In an embodiment of the present disclosure, all carriers for which a beam direction is determined based on a TCI state using the same reference carrier may be selectively divided to belong to the same carrier list, and then all carriers configured for a terminal may be divided to belong to different carrier lists according to differences in the reference carriers used to determine the beam direction.

[0055] In step S210, a first configuration for each candidate reference carrier in the carrier list is received, and optionally the first configuration is a PDSCH configuration. Here, the base station may configure PDSCH resources for each carrier via Radio Resource Control (RRC) signaling. In an embodiment of the present disclosure, the base station configures a TCI state pool in the PDSCH configuration for the candidate reference carrier in the carrier list. Optionally, the TCI state pool includes TCI states, each indicated by a corresponding TCI state pool identifier TCI-StateId. For example, the first TCI state is indicated by TCI-State0, the second TCI state is indicated by TCI-State1, and so on.

[0056] Optionally, the carriers configured by the base station for the terminal may include multiple candidate reference carriers, each of which is configured with a TCI status pool.

[0057] Optionally, one carrier list includes one candidate reference carrier, which is the reference carrier to be determined, and for all carriers in the carrier list, the beam direction is determined using the TCI state in the TCI state pool set for the one candidate reference carrier.

[0058] Optionally, for a beam pointing method according to an embodiment of the present disclosure, the method further comprises: receiving a second configuration for each carrier in a carrier list other than the candidate reference carrier, the second configuration including a carrier index; determining the reference carrier from among the candidate reference carriers based on the carrier index.

[0059] Here, the carrier index is used to indicate the reference carrier.

[0060] In the embodiment of the present disclosure, the second configuration is a PDSCH configuration. The base station sets a carrier index to indicate one candidate reference carrier in the carrier list among the PDSCH resources configured for carriers other than the candidate reference carrier through RRC signaling, i.e., determines a reference carrier based on the candidate reference carrier (corresponding to the above step S220), indicates that the corresponding carrier adopts the TCI state in the TCI state pool configuration of the indicated candidate reference carrier, and can determine a beam direction.

[0061] By adopting the beam indication method according to the embodiment of the present disclosure, one of the candidate reference carriers is indicated by the carrier index set by the base station via RRC signaling in the PDSCH resource set for carriers other than the candidate reference carrier, and the candidate reference carrier determined based on the carrier index becomes the reference carrier, and it is indicated to adopt the TCI state in the TCI state pool setting of the reference carrier corresponding to the carrier index on the set carrier, thereby determining the beam direction.

[0062] For example, suppose the carrier list contains 10 carriers represented as CC0, CC1, ..., CC9, where CC0 is a candidate reference carrier and CC1, ..., CC9 are non-reference carriers. In CC0 PDSCH configuration, the base station configures a TCI state pool containing 128 TCI states, each of which is indicated by a corresponding TCI-StateId. For non-reference carriers, the PDSCH configuration of each CC does not configure a TCI state pool but configures one carrier index CC0 (i.e., indicates that the candidate reference carrier corresponding to the carrier index of CC0 is the reference carrier), thereby instructing all configured non-reference carriers to use the TCI state on the reference carrier CC0.

[0063] Optionally, for a beam pointing method according to an embodiment of the present disclosure, the method further comprises: The base station receives the carrier list indicating via first signaling, and selectively sets one candidate reference carrier in one of the carrier lists, i.e., sets one reference carrier.

[0064] In this way, based on the carrier list in the first signaling, it can be determined that the transmission of channels and / or reference signals on each carrier in the carrier list will adopt the TCI state set for the reference carrier.

[0065] Optionally, the first signaling may be higher layer signaling, which configures a carrier list via the higher layer signaling. A carrier in the carrier list can be determined based on the carrier list configured via the higher layer signaling. A carrier in the carrier list for which a TCI status pool is configured is used as a candidate reference carrier (i.e., reference carrier), and a beam direction is determined based on the TCI status in the TCI status pool configured for the reference carrier.

[0066] When this embodiment is adopted, if there are multiple carriers configured for a terminal, the multiple carriers can include at least two candidate reference carriers, and a carrier list is configured via higher layer signaling, and one candidate reference carrier is configured in one carrier list, i.e., one reference carrier is configured, thereby indicating that carriers in the same carrier list will adopt the TCI state in the TCI state pool configured for the same reference carrier, and determining the beam direction.

[0067] Optionally, the beam pointing method according to the embodiment of the present disclosure further comprises: receiving second signaling for activating a TCI state transmitted from a base station, the second signaling carrying an index indication for indicating the reference carrier; and determining the reference carrier from the candidate reference carriers based on the index indication (corresponding to step S220 in the embodiment of the present disclosure); Or, The method includes receiving third signaling for indicating one TCI state among the activated TCI states transmitted from the base station, the third signaling being accompanied by an index indication for indicating the reference carrier, and determining the reference carrier from among the candidate reference carriers based on the index indication (corresponding to step S220 in an embodiment of the present disclosure).

[0068] Specifically, based on the index indications attached to the second signaling and the third signaling, it is possible to decide to adopt the TCI state on the candidate reference carrier indicated by the index indication and determine the beam direction.

[0069] Specifically, the base station receives second signaling for activating a TCI state transmitted from the base station, and if the second signaling is accompanied by an index indication of a candidate reference carrier, determines a reference carrier based on the candidate reference carrier corresponding to the index indication, determines a TCI state in a TCI state pool set for the reference carrier, and determines TCI states corresponding to all carriers in the carrier list.

[0070] Alternatively, receive third signaling for indicating one TCI state among the activated TCI states transmitted from the base station, and if the third signaling indicates an index of an associated candidate reference carrier, determine the reference carrier based on the candidate reference carrier corresponding to the index indication, determine the TCI state in the TCI state pool set for the reference carrier, and determine the TCI states corresponding to all carriers in the carrier list.

[0071] Optionally, in an embodiment of the present disclosure, the second signaling may be, but is not limited to, Media Access Control-Control Element (MAC-CE) signaling, which is used to perform beam direction to activate partial TCI states in a TCI state pool on a reference carrier.

[0072] The third signaling may be, but is not limited to, DCI signaling, which is used to indicate one TCI state among the activated TCI states, and the beam direction can be determined based on the TCI state.

[0073] In another embodiment of the beam pointing method according to the embodiments of the present disclosure, the method further comprises: and reporting an index indication to the base station for indicating a reference carrier among the candidate reference carriers, thereby determining the reference carrier from among the candidate reference carriers based on the index indication (corresponding to step S220 in the embodiment of the present disclosure).

[0074] By adopting this embodiment, when there are at least two candidate reference carriers set by the base station, the terminal can determine a reference carrier among the candidate reference carriers and report an index indication corresponding to the determined reference carrier to the base station. Based on the index indication, the base station can decide to adopt the TCI state in the TCI state pool of the candidate reference carrier corresponding to the index indication, and determine the beam direction.

[0075] The specific implementation process of the beam pointing method according to the embodiment of the present disclosure will be described in detail below based on a specific embodiment.

[0076] Embodiment 1

[0077] The carrier list is configured to include 10 carrier CCs, each represented as CC0, CC1, ..., CC9. The base station configures PDSCH resources for each carrier via RRC signaling.

[0078] The base station determines CC0 as the candidate reference carrier. In this embodiment, receiving a first configuration for the candidate reference carrier includes receiving a PDSCH configuration (first configuration) for CC0, in which the base station configures a TCI state pool including 128 TCI states. Each state is indicated by a corresponding TCI-StateId. For example, the first TCI state is indicated by TCI-State0, the second TCI state is indicated by TCI-State1, and so on. Each TCI state includes the following Quasi-Co-Location (QCL) domains, as shown in the following table:

[0079] [Table 1] Here, the QCL domain in the TCI state indicates that the target channel / reference signal and the source reference signal Source RS have a QCL relationship of Type D. Type D indicates that the QCL type is beam direction information, that is, the TCI state uses a beam with the same direction as the source reference signal.

[0080] Assuming that CC1, ..., CC9 are non-reference carriers, the PDSCH configuration of each of them does not configure a TCI state pool, but configures one carrier index CC0 to indicate the reference carrier (i.e., receives a second configuration for each carrier in the carrier list except the candidate reference carrier), thereby determining the reference carrier from the candidate reference carriers and indicating that the TCI state on CC0 is used on all of the above carriers in the carrier list.

[0081] When performing beam direction, the base station first sends MAC-CE signaling (second signaling) to the terminal to activate eight TCI states in the TCI state pool of the reference carrier, as shown in the following table.

[0082] [Table 2]

[0083] The base station then transmits DCI signaling (third signaling) to the terminal to indicate one of the TCI states, for example, TCI-State9 (i.e., receives a common TCI state index transmitted from the base station, where the common TCI state index specifically includes the indicated TCI state index). After receiving the DCI signaling, the base station and the terminal transmit and receive uplink and downlink channels (Physical Downlink Control Channel (PDCCH) / Physical Downlink Shared Channel (PDSCH) / Physical Uplink Control Channel (PUCCH) / Physical Uplink Shared Channel (PUSCH)) and uplink and downlink reference signals (CSI-RS / SRS) on all carriers using the beam direction of the Type D source reference signal in TCI-State9. The source reference signal is a reference signal configured on carrier CC0.

[0084] Embodiment 2

[0085] The carrier list is set to include 10 CCs, each represented as CC0, CC1, ..., CC9. The base station configures PDSCH resources for each carrier via RRC signaling.

[0086] The base station determines CC0 and CC4 as candidate reference carriers. In this embodiment, receiving a first configuration for the candidate reference carrier includes receiving a PDSCH configuration (first configuration) for CC0, where the base station configures a TCI state pool including 128 TCI states. Each state is indicated by a corresponding TCI-StateId. For example, the first TCI state is indicated by TCI-State0, the second TCI state is indicated by TCI-State1, and so on. Each TCI state includes the following QCL domains, as shown in the following table:

[0087] [Table 3]

[0088] Here, the QCL domain in the TCI state indicates that the target channel / reference signal and the source reference signal (Source RS) have a QCL relationship of Type D. Type D indicates that the QCL type is beam direction information, that is, the TCI state uses a beam with the same direction as the source reference signal. Similarly, in the PDSCH configuration of candidate reference carrier CC4, the base station also configures a TCI state pool including 128 TCI states.

[0089] In this embodiment, for the non-reference carriers of CC1, ..., CC3 and CC5, ..., CC9, the PDSCH configuration of each CC does not configure a TCI status pool, and does not configure a reference carrier index.

[0090] When performing beam direction, the base station first sends MAC-CE signaling (second signaling) to the terminal to activate eight TCI states in the TCI state pool of the reference carrier, as shown in the following table.

[0091] [Table 4]

[0092] In this embodiment, the MAC-CE signaling may further indicate a reference carrier index such as CC4, which determines the reference carrier among the candidate reference carriers based on the reference carrier index, which is used to indicate the carrier to which the above-mentioned eight TCI states belong, i.e., to determine the TCI state pool using CC4.

[0093] The base station then sends DCI signaling (third signaling) to the terminal to indicate one of the TCI states, for example, TCI-State9 (i.e., the terminal receives the second configuration for each carrier in the carrier list except for the candidate reference carrier). After receiving the DCI signaling, the base station and the terminal transmit and receive uplink and downlink channels (PDCCH / PDSCH / PUCCH / PUSCH) and uplink and downlink reference signals (Channel State Indication-Reference Signal (CSI-RS) / Sounding Reference Signal (SRS)) on all carriers using the beam direction of the Type D source reference signal in TCI-State9 in the CC4 state pool. The source reference signal is the reference signal configured on CC4.

[0094] In another embodiment, in addition to the above-mentioned method of indicating a reference carrier index when sending MAC-CE signaling (second signaling) to the terminal, the terminal may also adopt a method of reporting an index indication (including the index of the reference carrier). The terminal determines the reference carrier from two candidate reference carriers, and both the base station and the terminal adopt the reference carrier reported by the terminal in the index indication to determine the TCI status of the non-reference carrier.

[0095] Embodiment 3

[0096] The carrier list is set to include 10 CCs, each represented as CC0, CC1, ..., CC9. The base station configures PDSCH resources for each carrier via RRC signaling.

[0097] The base station is configured to determine CC0 and CC4 as candidate reference carriers. In this embodiment, the terminal receiving the first configuration for the candidate reference carriers includes receiving a PDSCH configuration (first configuration) for CC0, in which the base station configures a TCI state pool including 128 TCI states. Each state is indicated by a corresponding TCI-StateId. For example, the first TCI state is indicated by TCI-State0, the second TCI state is indicated by TCI-State1, and so on. Each TCI state includes the following QCL domains, as shown in the following table:

[0098] [Table 5]

[0099] Here, the QCL domain in the TCI state indicates that the target channel / reference signal and the source reference signal have a QCL relationship of Type D. At the same time, a reference signal CC index is configured in the TCI state to indicate the carrier (e.g., CC3) on which the source reference signal in the TCI state exists. Type D indicates that the QCL type is beam direction information, i.e., the TCI state uses a beam with the same direction as the source reference signal on CC3. Similarly, the terminal receiving the first configuration for the candidate reference carrier further includes receiving a PDSCH configuration for CC4, and the PDSCH configuration also configures a TCI state pool including 128 TCI states.

[0100] For the non-reference carriers of CC1, ..., CC3 and CC5, ..., CC9, the PDSCH configuration of each CC does not configure a TCI state pool, and does not configure a reference carrier index.

[0101] When performing beam direction, the base station first sends MAC-CE signaling (second signaling) to the terminal, where the MAC-CE signaling includes a reference carrier index CC0. That is, the terminal can determine a reference carrier among the candidate reference carriers based on the reference carrier index. The MAC-CE signaling is also used to activate eight TCI states in the TCI state pool for the reference carrier CC0, as shown in the following table:

[0102] [Table 6]

[0103] The base station then sends DCI signaling (third signaling) to the terminal to indicate one of the TCI states, for example, TCI-State 9 (i.e., the terminal receives the second configuration for each carrier in the carrier list except for the candidate reference carrier). After receiving the DCI signaling, the base station and the terminal transmit and receive uplink and downlink channels (PDCCH / PDSCH / PUCCH / PUSCH) and uplink and downlink reference signals (CSI-RS / SRS) on all carriers using the beam direction of the Type D source reference signal in TCI-State 9 in the CC0 state pool.

[0104] In another embodiment, the MAC-CE signaling may optionally not include a reference carrier index indication, while the DCI signaling may optionally indicate a reference carrier index CC0. That is, the terminal may determine the reference carrier based on the carrier index indicated by the DCI signaling. This specific embodiment will not be described in detail herein.

[0105] In another embodiment, the MAC-CE signaling optionally does not include a reference carrier index indication. Since each of the above TCI states includes a reference signal CC index, the reference signal CC index can be determined as the reference carrier. For example, in the following TCI state, the reference signal CC index is CC3, so the reference carrier is also determined to be CC3:

[0106] [Table 7]

[0107] Embodiment 4

[0108] The carrier list is set to include 10 CCs, each represented as CC0, CC1, ..., CC9. The base station configures PDSCH resources for each carrier via RRC signaling.

[0109] CC0 is configured as a candidate reference carrier, and in this embodiment, the terminal receiving a first configuration for the candidate reference carrier includes receiving a PDSCH configuration (first configuration) for CC0, in which the base station configures a TCI state pool including 128 TCI states. Each state is indicated by a corresponding TCI-StateId. For example, the first TCI state is indicated by TCI-State0, the second TCI state is indicated by TCI-State1, and so on. Each TCI state includes the following QCL domains, as shown in the following table:

[0110] [Table 8]

[0111] Here, the QCL domain in the TCI state indicates that the target channel / reference signal and the source reference signal have a QCL relationship of Type D. Type D indicates that the QCL type is beam direction information, that is, the TCI state uses a beam with the same direction as the source reference signal.

[0112] Similarly, CC8 can be configured as a candidate reference beam. The terminal's receiving the first configuration for the candidate reference carrier further includes receiving a PDSCH configuration for CC8, in which the base station also configures a TCI state pool including 128 TCI states. For the remaining 8 CCs, no TCI state pool is configured and no reference CC index is configured.

[0113] Furthermore, the base station configures CC list 1 including {CC0, CC1, CC2, CC3, CC4} via upper layer signaling 1 (first signaling). The base station configures CC list 2 including {CC5, CC6, CC7, CC8, CC9} via upper layer signaling 2 (first signaling). The system predefines that CCs in each list use CCs (candidate reference carriers) for which a TCI state pool is configured as their reference carrier CC. In this way, CC1, CC2, CC3, and CC4 all use the TCI state on CC0, and CC5, CC6, CC7, and CC9 all use the TCI state on CC8.

[0114] When performing beam direction, the base station first sends MAC-CE signaling (second signaling) to the terminal to activate eight TCI states in the TCI state pool of the reference carrier, as shown in the following table.

[0115] [Table 9]

[0116] The base station then sends DCI signaling (third signaling) to the terminal to indicate one of the TCI states, for example, TCI-State9 (i.e., the terminal receives the second configuration for each carrier in the carrier list except the candidate reference carrier). After receiving the DCI signaling, the base station and the terminal transmit and receive uplink and downlink channels (PDCCH / PDSCH / PUCCH / PUSCH) and uplink and downlink reference signals (CSI-RS / SRS) on {CC0, CC1, CC2, CC3, CC4} using the beam direction of the Type D source reference signal in TCI-State9 on CC0. The source reference signal is the reference signal configured on CC0. At the same time, the base station and the terminal transmit and receive uplink and downlink channels (PDCCH / PDSCH / PUCCH / PUSCH) and uplink and downlink reference signals (CSI-RS / SRS) on {CC5, CC6, CC7, CC8, CC9} using the beam direction of a Type D source reference signal in TCI-State 9 on CC8. The source reference signal is a reference signal configured on CC8. According to the above embodiment, different carrier lists are configured through higher layer signaling, each of which includes one candidate reference carrier, and the beam direction of all carriers in the carrier list is determined using the TCI state of the reference carrier.

[0117] In addition to the above embodiment, in another embodiment, the base station selectably includes at least two candidate reference carriers in the carrier list. When performing beam direction, the base station first transmits MAC-CE signaling to the terminal to activate eight TCI states in the TCI state pool of the reference carrier. At the same time, the MAC-CE signaling is accompanied by a reference CC index, such as CC8, indicating the reference carrier. That is, the terminal can determine the reference carrier based on the reference carrier index. Then, the base station transmits DCI signaling to the terminal to indicate one of the TCI states, for example, TCI-State9. After receiving the DCI signaling, the base station and the terminal transmit and receive uplink and downlink channels (PDCCH / PDSCH / PUCCH / PUSCH) and uplink and downlink reference signals (CSI-RS / SRS) on all carriers using the beam direction of a Type D source reference signal in TCI-State9 on CC8. The source reference signal is the reference signal configured on CC8.

[0118] Another embodiment of the present disclosure further provides a beam directing method performed by a base station. As shown in Figure 3, the method includes the following steps S310 to S340.

[0119] At S310, a first configuration corresponding to each candidate reference carrier in the carrier list is sent to the terminal, where the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier.

[0120] In S320, a reference carrier is determined from the candidate reference carriers.

[0121] At S330, a common TCI state index is sent to the terminal, where the common TCI state index is used to indicate a TCI state in a TCI state pool corresponding to the reference carrier.

[0122] In S340, a beam direction in which a channel and / or reference signal is transmitted on each carrier in the carrier list is determined based on the TCI state indicated by the common TCI state index.

[0123] By employing the beam direction method according to the embodiment of the present disclosure, it is not necessary to configure a TCI state pool for each carrier in the carrier list, but it is sufficient to configure a TCI state pool for a candidate reference carrier in the carrier list. When performing beam direction, for all carriers in the carrier list, the beam direction is determined based on the TCI in the TCI state pool of one reference carrier among the candidate reference carriers, and channel and / or reference signal transmission is performed. Therefore, by employing the beam direction method according to the embodiment of the present disclosure, the TCI state pool is configured only for the candidate reference carrier in the carrier list, which significantly reduces the overhead due to signaling configuration compared to the related art, which requires configuring a TCI state pool for each carrier in the carrier list.

[0124] In an embodiment of the present disclosure, optionally, after step S340, the method further comprises: Using the determined beam direction, transmitting a channel and / or a reference signal on all carriers in the carrier list.

[0125] For the beam direction method according to the embodiment of the present disclosure, the candidate reference carrier may be a part of the carriers recorded in the carrier list, i.e., the TCI status pool may be set only for a part of the carriers in the carrier list. The reference carrier determined from among the candidate reference carriers is one of the candidate reference carriers.

[0126] Optionally, in step S320, determining a reference carrier from among the candidate reference carriers includes: Sending a second configuration corresponding to each carrier in a carrier list other than the candidate reference carrier to a terminal, wherein the second configuration includes a carrier index; determining the reference carrier from among the candidate reference carriers based on the carrier index.

[0127] Here, the carrier index is used to indicate the reference carrier.

[0128] In an embodiment of the present disclosure, the second configuration is optionally a PDSCH configuration. The base station may set, via RRC signaling, a carrier index for indicating a reference carrier in the carrier list among the PDSCH resources configured for carriers other than the candidate reference carrier, and may instruct the corresponding carrier to adopt the TCI state in the TCI state pool configuration of the indicated reference carrier, thereby determining a beam direction.

[0129] Optionally, the method further comprises: Indicating a plurality of the carrier lists to the terminal via first signaling, where one reference carrier is set in one of the carrier lists.

[0130] In this way, based on the carrier list in the first signaling, it can be determined that the transmission of channels and / or reference signals on each carrier in the carrier list will adopt the TCI state set for the reference carrier.

[0131] When this embodiment is adopted, if there are multiple carriers configured for a terminal, the multiple carriers can include at least two candidate reference carriers, and a carrier list is configured via higher layer signaling, and one candidate reference carrier is configured in one carrier list, i.e., one reference carrier is configured, thereby indicating that carriers in the same carrier list will adopt the TCI state in the TCI state pool configured for the same reference carrier, and determining the beam direction.

[0132] Optionally, in step S320, determining a reference carrier from among the candidate reference carriers includes: Sending second signaling to the terminal for activating a TCI state, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the second signaling; or The method includes transmitting third signaling to the terminal to indicate one of the activated TCI states, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the third signaling.

[0133] Specifically, the index indications attached to the second and third signaling are further used to indicate that the TCI state on the reference carrier indicated by the index indication should be adopted, thereby determining the beam direction.

[0134] Optionally, in step S320, determining a reference carrier from among the candidate reference carriers includes: receiving an index indication reported by a terminal; determining the reference carrier from among the candidate reference carriers based on the index indication.

[0135] When this embodiment is adopted, if there are at least two candidate reference carriers set by the base station, the terminal reports an index indication to the base station to instruct it to adopt the TCI state in the TCI state pool of the candidate reference carrier corresponding to the index indication, and the beam direction can be determined.

[0136] In addition, the description of each step and the specific implementation process when the beam instruction method described in the embodiments of the present disclosure is executed by a terminal are suitable for execution by the base station side, and will not be described in detail here.

[0137] Therefore, all descriptions relating to the terminal in the above embodiments can also be applied to the base station embodiment to achieve the same technical effect.

[0138] As shown in FIG. 4 , an embodiment of the present disclosure provides a beam directing device, where the beam directing device 400 includes: a setting receiving unit 410 , a first determining unit 420 , an index receiving unit 430 and a second determining unit 440 .

[0139] The configuration receiving unit 410 is configured to receive a first configuration for each candidate reference carrier in a carrier list, the first configuration including a transmission configuration indication TCI state pool to be configured for each candidate reference carrier.

[0140] The first determining unit 420 is configured to determine a reference carrier from among said candidate reference carriers.

[0141] The index receiving unit 430 is configured to receive a common TCI state index transmitted from a base station, and the common TCI state index is used to indicate a TCI state in a TCI state pool corresponding to the reference carrier.

[0142] The second determination unit 440 is configured to determine a beam direction in which a channel and / or reference signal is transmitted on each carrier in the carrier list based on the TCI state indicated by the common TCI state index.

[0143] Optionally, for the beam directing device, determining a reference carrier from among the candidate reference carriers by a first determining unit 420 comprises: receiving a second configuration for each carrier in a carrier list other than the candidate reference carrier, the second configuration including a carrier index; determining the reference carrier from among the candidate reference carriers based on the carrier index.

[0144] Optionally, for the beam directing device, the configuration receiving unit 410 further comprises: The base station is used to receive the carrier lists indicated through first signaling, where one reference carrier is set in one of the carrier lists.

[0145] Optionally, for the beam directing device, determining a reference carrier from among the candidate reference carriers by a first determining unit 420 comprises: receiving second signaling for activating a TCI state transmitted from a base station, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the second signaling; or receiving third signaling for indicating one of the activated TCI states transmitted from the base station, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the third signaling.

[0146] Optionally, for the beam directing device, determining a reference carrier from among the candidate reference carriers by a first determining unit 420 comprises: reporting the index indication to a base station; determining the reference carrier from among the candidate reference carriers based on the index indication.

[0147] It should be noted that the terminal embodiment is a terminal that corresponds one-to-one with the above method embodiment, and all the implementation methods in the above method embodiment can be applied to the terminal embodiment to achieve the same technical effects.

[0148] The division into units in the embodiments of the present disclosure is merely an example and is merely a division of logical functions, and may have a different division scheme when actually realized. Furthermore, each functional unit in each embodiment of the present disclosure may be integrated into a single processing unit, or each unit may exist physically independent, or two or more units may be integrated into a single unit. The integrated units may be realized in the form of hardware or software functional units.

[0149] The integrated unit may be realized in the form of a software functional unit and stored in a processor-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present disclosure, essentially or in part, contributing to the related art, or all or part of the technical solution, can be expressed in the form of a software product, and the computer software product is stored in a storage medium and includes several instructions that cause a computer device (which may be a personal computer, a server, a network device, etc.) or a processor to execute all or part of the steps of the method according to each embodiment of the present disclosure. The storage medium includes various media capable of storing program code, such as a USB flash disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0150] As shown in FIG. 5, an embodiment of the present disclosure further provides a terminal including a processor 500, a transceiver 510, a memory 520, and a program stored in the memory 520 and executable by the processor 500, wherein the transceiver 510 is connected to the processor 500 and the memory 520 via a bus interface, and the transceiver 510 transmits and receives data under the control of the processor 500.

[0151] Here, the processor 500 reads the program in the memory and executes the following: receiving a first configuration for each candidate reference carrier in a carrier list, the first configuration including a transmission configuration indication TCI state pool configured for each candidate reference carrier; determining a reference carrier from among the candidate reference carriers; receiving a common TCI state index transmitted from a base station, the common TCI state index being used to indicate a TCI state in a TCI state pool corresponding to the reference carrier; and determining a beam direction in which channel and / or reference signals are transmitted on each carrier in the carrier list based on the TCI state indicated by the common TCI state index.

[0152] Optionally, for the terminal, determining a reference carrier from among the candidate reference carriers by the processor 500 comprises: receiving a second configuration for each carrier in a carrier list other than the candidate reference carrier, the second configuration including a carrier index; determining the reference carrier from among the candidate reference carriers based on the carrier index.

[0153] Optionally, for the terminal, the processor 500 further The base station is used to receive the carrier lists indicated through first signaling, where one reference carrier is set in one of the carrier lists.

[0154] Optionally, for the terminal, determining a reference carrier from among the candidate reference carriers by the processor 500 comprises: receiving second signaling for activating a TCI state transmitted from a base station, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the second signaling; or receiving third signaling for indicating one of the activated TCI states transmitted from the base station, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the third signaling.

[0155] Optionally, for the terminal, determining a reference carrier from among the candidate reference carriers by the processor 500 comprises: reporting the index indication to a base station; determining the reference carrier from among the candidate reference carriers based on the index indication.

[0156] In FIG. 5, the bus architecture may include any number of interconnected buses and bridges, specifically connecting various circuits, such as one or more processors, represented by processor 500, and memory, represented by memory 520. The bus architecture may also connect various other circuits, such as peripherals, regulators, and power management circuits, which are well known in the art and will not be described further herein. The bus interface provides an interface. The transceiver 510 may be multiple elements, i.e., may include a transmitter and a receiver, and provides a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical cables, and the like. For different user devices, the user interface 530 may further be an interface that can be externalized or internalized to required devices, and the connected devices may include, but are not limited to, a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0157] The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 when performing operations.

[0158] Alternatively, the processor 500 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or a complex programmable logic device (CPLD), and the processor may employ a multi-core architecture.

[0159] The processor is used to execute any of the methods according to the embodiments of the present disclosure in response to the executable instructions obtained by calling the program instructions stored in the memory. The processor and the memory may be physically separated.

[0160] It should be noted that the above-mentioned terminal according to the embodiment of the present disclosure can realize all the steps in the method realized in the above-mentioned method embodiment and can achieve the same technical effects, and therefore, the same parts and beneficial effects in this embodiment as those in the method embodiment will not be described here.

[0161] An embodiment of the present disclosure further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, realizes steps of the beam directing method applied to a terminal. The processor-readable storage medium may be any available medium or data storage device accessible to a computer, including, but not limited to, magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), optical memory (e.g., CD, DVD, BD, HVD), semiconductor memory (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)), etc.

[0162] As shown in FIG. 6 , an embodiment of the present disclosure provides a beam directing device, where the beam directing device 600 includes: a setting sending unit 610, a third determining unit 620, an index sending unit 630 and a fourth determining unit 640.

[0163] The configuration sending unit 610 is configured to send a first configuration corresponding to each candidate reference carrier in the carrier list to the terminal, where the first configuration includes a transmission configuration indication TCI state pool to be set for each candidate reference carrier.

[0164] The third determining unit 620 is configured to determine a reference carrier from among said candidate reference carriers.

[0165] The index sending unit 630 is configured to send a common TCI state index to a terminal, where the common TCI state index is used to indicate a TCI state in a TCI state pool corresponding to the reference carrier.

[0166] The fourth determination unit 640 is configured to determine a beam direction in which a channel and / or reference signal is transmitted on each carrier in the carrier list based on the TCI state indicated by the common TCI state index.

[0167] Optionally, for the beam directing device, determining a reference carrier from among the candidate reference carriers by the third determining unit 620 includes: Sending a second configuration corresponding to each carrier in a carrier list other than the candidate reference carrier to a terminal, wherein the second configuration includes a carrier index; determining the reference carrier from among the candidate reference carriers based on the carrier index.

[0168] Optionally, for the beam directing device, the configuration and sending unit 610 further comprises: It is used to indicate the carrier lists to the terminal via first signaling, where one reference carrier is set in one of the carrier lists.

[0169] Optionally, for the beam directing device, determining a reference carrier from among the candidate reference carriers by the third determining unit 620 includes: Sending second signaling to the terminal for activating a TCI state, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the second signaling; or The method includes transmitting third signaling to the terminal to indicate one of the activated TCI states, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the third signaling.

[0170] Optionally, for the beam directing device, determining a reference carrier from among the candidate reference carriers by the third determining unit 620 includes: receiving an index indication reported by a terminal; determining the reference carrier from among the candidate reference carriers based on the index indication.

[0171] Furthermore, the embodiment of the beam directing device is a base station that corresponds one-to-one with the above method embodiment, and all the implementation methods in the above method embodiment can be applied to the base station embodiment to achieve the same technical effect.

[0172] The division into units in the embodiments of the present disclosure is merely an example and is merely a division of logical functions, and may have a different division scheme when actually realized. Furthermore, each functional unit in each embodiment of the present disclosure may be integrated into a single processing unit, or each unit may exist physically independent, or two or more units may be integrated into a single unit. The integrated units may be realized in the form of hardware or software functional units.

[0173] The integrated unit may be realized in the form of a software functional unit and stored in a processor-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present disclosure, essentially or in part, contributing to the related art, or all or part of the technical solution, can be expressed in the form of a software product, and the computer software product is stored in a storage medium and includes several instructions that cause a computer device (which may be a personal computer, a server, a network device, etc.) or a processor to execute all or part of the steps of the method according to each embodiment of the present disclosure. The storage medium includes various media capable of storing program code, such as a USB flash disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0174] As shown in FIG. 7, an embodiment of the present disclosure further provides a base station including a processor 700, a transceiver 710, a memory 720, and a program stored in the memory 720 and executable by the processor 700, wherein the transceiver 710 is connected to the processor 700 and the memory 720 via a bus interface, and the transceiver 710 is used to transmit and receive data under the control of the processor N00.

[0175] Here, the processor 700 reads the program in the memory and executes the following: Sending a first configuration corresponding to each candidate reference carrier in a carrier list to the terminal, the first configuration including a transmission configuration indication TCI state pool configured for each candidate reference carrier; determining a reference carrier from among the candidate reference carriers; sending a common TCI state index to a terminal, the common TCI state index being used to indicate a TCI state in a TCI state pool corresponding to the reference carrier; and determining a beam direction in which channel and / or reference signals are transmitted on each carrier in the carrier list based on the TCI state indicated by the common TCI state index.

[0176] Optionally, for the base station, determining a reference carrier from among the candidate reference carriers by the processor 700 comprises: Sending a second configuration corresponding to each carrier in a carrier list other than the candidate reference carrier to a terminal, wherein the second configuration includes a carrier index; determining the reference carrier from among the candidate reference carriers based on the carrier index.

[0177] Optionally, for the base station, the processor 700 further It is used to indicate the carrier lists to the terminal via first signaling, where one reference carrier is set in one of the carrier lists.

[0178] Optionally, for the base station, determining a reference carrier from among the candidate reference carriers by the processor 700 comprises: Sending second signaling to the terminal for activating a TCI state, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the second signaling; or The method includes transmitting third signaling to the terminal to indicate one of the activated TCI states, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the third signaling.

[0179] Optionally, for the base station, determining a reference carrier from among the candidate reference carriers by the processor 700 comprises: receiving an index indication reported by a terminal; determining the reference carrier from among the candidate reference carriers based on the index indication.

[0180] In FIG. 7, the bus architecture may include any number of interconnected buses and bridges, specifically connecting various circuits, such as one or more processors, represented by processor 700, and memory, represented by memory 720. The bus architecture may also connect various other circuits, such as peripherals, regulators, and power management circuits, which are well known in the art and will not be described further herein. The bus interface provides an interface. The transceiver 710 may be multiple elements, i.e., may include a transmitter and a receiver, and provides a unit for communicating with various other devices via transmission media, including wireless channels, wired channels, optical cables, and the like. The processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 can store data used by the processor 700 when performing operations.

[0181] The processor 700 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD), and the processor may employ a multi-core architecture.

[0182] It should be noted that the base station according to the embodiment of the present disclosure can realize all the steps in the method realized in the above method embodiment and can achieve the same technical effects, and therefore, the same parts and beneficial effects as those in the method embodiment of this embodiment will not be described here.

[0183] An embodiment of the present disclosure further provides a computer-readable storage medium having a computer program stored thereon, the computer program implementing steps of a beam directing method applied to a base station when executed by a processor. The processor-readable storage medium may be any available medium or data storage device accessible to a computer, including, but not limited to, magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), optical memory (e.g., CD, DVD, BD, HVD), semiconductor memory (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)), etc.

[0184] As will be appreciated by those skilled in the art, embodiments of the present disclosure may be provided as a method, a system, or a computer program product. Therefore, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product embodied in one or more computer-usable storage media (including, but not limited to, disk memory, optical memory, etc.) containing computer-usable program code.

[0185] The disclosure will be described with reference to flowcharts and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and combinations of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate an apparatus, and the instructions executed by the processor of the computer or other programmable data processing device generate an apparatus for implementing the function(s) specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0186] These processor-executable instructions may be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, and the instructions stored in the processor-readable memory may produce an article of manufacture that includes an instruction apparatus, which implements the functions specified in one or more flows of the flowcharts and / or one or more blocks of the block diagrams.

[0187] These processor-executable instructions may also be loaded into a computer or other programmable data processing device and cause the computer or other programmable device to perform a series of operational steps to produce a computer-implemented process, whereby the commands executed by the computer or other programmable device provide steps for implementing the functions specified in one or more flows of the flowcharts and / or one or more blocks of the block diagrams.

[0188] Obviously, those skilled in the art can make various modifications and variations to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure also intends to include such modifications and variations.

[0189] It should be understood that the division of each module described above is merely a division of logical functions, and that in actual implementation, all or part of the modules may be integrated into a single physical entity or physically separated. Furthermore, these modules may be implemented entirely in a form in which software is called by a processing element, entirely in a form of hardware, or in a form in which some modules call software by a processing element, or in a form in which some modules are implemented in a form of hardware. For example, the decision module may be a separately established processing element, or may be implemented integrated into a chip of the device, or may be stored in the memory of the device in the form of program code, and may be executed by a processing element of the device by calling the function of the decision module. The same applies to the implementation of other modules. It should be noted that these modules may be implemented entirely or partially integrated or independently. The processing elements described herein may be integrated circuits capable of processing signals. In the implementation process, each step of the above method or each module may be completed by a hardware integrated logic circuit in a processor element or by instructions in software form.

[0190] For example, each module, unit, sub-unit, or sub-module may be configured as one or more integrated circuits that implement the above method, such as one or more application specific integrated circuits (ASICs), one or more microprocessors (digital signal processors (DSPs)), or one or more field programmable gate arrays (FPGAs). Furthermore, for example, when a certain module is implemented in a form in which a processing element calls a program code, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or a processor capable of calling other program code. Furthermore, for example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0191] Terms such as "first," "second," and the like in the specification and claims of this disclosure are not used to describe a particular order or sequence, but rather to distinguish between similar objects. It should be understood that such terms may be appropriately interchanged so that the embodiments of the disclosure described herein are performed in other orders than those illustrated or described herein. Furthermore, the terms "comprise" and "have," and any variations thereof, are intended to be non-exclusive. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly recited, but may include other steps or units not explicitly recited or inherent in the process, method, product, or apparatus. Furthermore, "and / or," as used in the specification and claims, means at least one of the connected objects. For example, A and / or B and / or C includes seven cases: A alone, B alone, C alone, both A and B present, both B and C present, both A and C present, and both A, B, and C present. Similarly, "at least one of A and B" as used in this specification and claims should be understood as "there is A alone, B alone, or both A and B."

[0192] Although examples of the present disclosure have been described above using the drawings, the present disclosure is not limited to the above-described embodiments, which are merely illustrative and not limiting, and a person skilled in the art can take many forms that fall within the scope of protection of the present disclosure under the guidance of the present disclosure without departing from the spirit of the present disclosure and the scope of the claims.

Claims

1. 1. A beam pointing method performed by a terminal, the method comprising: receiving a first configuration for each candidate reference carrier in a carrier list, the first configuration including a TCI (Transmission Configuration Indicator) state pool configured for each candidate reference carrier; determining a reference carrier from among the candidate reference carriers; receiving a common TCI state index transmitted from a base station, the common TCI state index being used to indicate a TCI state in a TCI state pool corresponding to the reference carrier; and determining a beam direction in which a channel and / or a reference signal is transmitted on each carrier in the carrier list based on the TCI state indicated by the common TCI state index.

2. determining a reference carrier from among the candidate reference carriers receiving a second configuration for each carrier in a carrier list other than the candidate reference carrier, the second configuration including a carrier index for indicating the reference carrier; determining the reference carrier from among the candidate reference carriers based on the carrier index. The beam directing method of claim 1 .

3. The method further comprises: The method includes receiving a plurality of carrier lists indicated by a base station via first signaling, wherein one reference carrier is set in one of the carrier lists. The beam directing method of claim 1 .

4. determining a reference carrier from among the candidate reference carriers receiving second signaling for activating a TCI state transmitted from a base station, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the second signaling; or receiving third signaling for indicating one of the activated TCI states transmitted from a base station, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the third signaling. The beam directing method of claim 1 .

5. determining a reference carrier from among the candidate reference carriers reporting the index indication to a base station; determining the reference carrier from among the candidate reference carriers based on the index indication. The beam directing method of claim 1 .

6. 1. A beam pointing method performed by a base station, the method comprising: sending a first configuration corresponding to each candidate reference carrier in a carrier list to the terminal, the first configuration including a TCI (Transmission Configuration Indicator) state pool configured for each candidate reference carrier; determining a reference carrier from among the candidate reference carriers; transmitting a common TCI state index to a terminal, the common TCI state index being used to indicate a TCI state in a TCI state pool corresponding to the reference carrier; and determining a beam direction in which a channel and / or a reference signal is transmitted on each carrier in the carrier list based on the TCI state indicated by the common TCI state index.

7. determining a reference carrier from among the candidate reference carriers Sending a second configuration corresponding to each carrier in a carrier list other than the candidate reference carrier to a terminal, wherein the second configuration includes a carrier index for indicating the reference carrier; determining the reference carrier from among the candidate reference carriers based on the carrier index.

7. The beam pointing method of claim 6.

8. The method further comprises: Indicating a plurality of the carrier lists to the terminal via first signaling, wherein one reference carrier is set in one of the carrier lists.

7. The beam pointing method of claim 6.

9. determining a reference carrier from among the candidate reference carriers sending second signaling to the terminal for activating a TCI state, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the second signaling; or transmitting third signaling to the terminal for indicating one of the activated TCI states, and determining the reference carrier from among the candidate reference carriers based on an index indication attached to the third signaling.

7. The beam pointing method of claim 6.

10. determining a reference carrier from among the candidate reference carriers receiving an index indication reported by a terminal; determining the reference carrier from among the candidate reference carriers based on the index indication.

7. The beam pointing method of claim 6.

11. A beam designating device for a terminal, the device including: a setting receiving unit, a first determining unit, an index receiving unit and a second determining unit; the configuration receiving unit is configured to receive a first configuration for each candidate reference carrier in a carrier list, the first configuration including a TCI (Transmission Configuration Indicator) state pool configured for each candidate reference carrier; a first determination unit configured to determine a reference carrier from among the candidate reference carriers; the index receiving unit is configured to receive a common TCI state index transmitted from a base station, the common TCI state index being used to indicate a TCI state in a TCI state pool corresponding to the reference carrier; A beam directing device, wherein the second determination unit is configured to determine a beam direction in which a channel and / or a reference signal is transmitted on each carrier in the carrier list based on the TCI state indicated by the common TCI state index.

12. determining a reference carrier from among the candidate reference carriers by the first determining unit, receiving a second configuration for each carrier in a carrier list other than the candidate reference carrier, the second configuration including a carrier index; determining the reference carrier from among the candidate reference carriers based on the carrier index.

12. The beam directing device of claim 11.

13. A beam directing device applied to a base station, the device including: a setting sending unit, a third determining unit, an index sending unit and a fourth determining unit; the configuration sending unit is configured to send a first configuration corresponding to each candidate reference carrier in the carrier list to the terminal, the first configuration including a TCI (Transmission Configuration Indicator) state pool configured for each candidate reference carrier; a third determination unit configured to determine a reference carrier from among the candidate reference carriers; the index sending unit is configured to send a common TCI state index to the terminal, the common TCI state index being used to indicate a TCI state in a TCI state pool corresponding to the reference carrier; A beam directing device, wherein a fourth determination unit is configured to determine a beam direction in which a channel and / or a reference signal is transmitted on each carrier in the carrier list based on the TCI state indicated by the common TCI state index.

14. determining a reference carrier from among the candidate reference carriers by the third determination unit, Sending a second configuration corresponding to each carrier in a carrier list other than the candidate reference carrier to a terminal, wherein the second configuration includes a carrier index; determining the reference carrier from among the candidate reference carriers based on the carrier index.

14. The beam directing device of claim 13.

15. A processor-readable storage medium having a computer program stored thereon, A processor-readable storage medium in which the computer program is used to cause the processor to execute the beam directing method described in any one of claims 1 to 5, or to cause the processor to execute the beam directing method described in any one of claims 6 to 10.

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