Beam indication method, device, terminal and base station

Abstract

The embodiments of the present invention provide a beam indication method, device, terminal and base station. The method comprises: receiving a first configuration for each candidate reference carrier in a carrier list, including a transmission configuration indicating a TCI state pool configured for each candidate reference carrier; determining a reference carrier from the candidate reference carriers; receiving a common TCI state index sent by a base station, the common TCI state index being used to indicate the TCI state in the TCI state pool corresponding to the reference carrier; and determining the beam direction for channel and / or reference signal transmission on each carrier in the carrier list according to the TCI state indicated by the common TCI state index. By adopting the beam indication method described in the embodiments of the present invention, since the TCI state pool is only configured on the candidate reference carriers in the carrier list, compared with the prior art which requires the TCI state pool to be configured on each carrier in the carrier list, the overhead of configuration signaling can be greatly reduced.

Description

Technical Field

[0001] The present invention relates to the field of wireless technology, and in particular to a beam indication method, device, terminal and base station. Background Art

[0002] In the New Radio (NR) technology protocol, for the Physical Uplink Control Channel (PUCCH) channel, the base station semi-statically configures multiple beam directions to the terminal through the high-level signaling spatial related information SpatialRelationInfo, and activates one of them through the Media Access Control-Control Element (MAC-CE). For PUSCH, the uplink beam selected by the base station is indirectly indicated by the SpatialRelationInfo of the sounding radio signal (SRS) resource indicated by the SRI field in the dynamic signaling downlink control information (DCI). For the Physical Downlink Control Channel (PDCCH) channel, the base station configures multiple Transmission Configuration Indication (TCI) states for each resource set CORESET through high-level signaling, and activates one of them through MAC-CE. For the PDSCH channel, the base station indicates a TCI state through the TCI field in the DCI signaling, indicating the beam direction of the channel.

[0003] Different channels use different beam indication signaling, and each channel performs beam indication independently. In this way, different channels may use different beams for transmission. An important scenario in practical applications is that multiple channels use the same beam direction. For example, the physical downlink control channel (PDCCH) used for resource scheduling and the physical downlink shared channel (PDSCH) used to transmit user data use the same beam direction for transmission; the uplink control channel PUCCH and the uplink data channel PUSCH also use the same beam direction. When beam reciprocity exists, the uplink channel and the downlink channel will also use the same beam direction. At this time, the current independent beam indication method increases the complexity of the system and the signaling indication overhead. In order to overcome the above problems, the current protocol also introduces a method of using a beam indication signaling to indicate multiple channel beams, which activates a set of TCI states through MAC-CE, and then uses DCI to indicate one of the activated TCI states.

[0004] For carrier aggregation (CA) terminals, each component carrier (CC) needs to determine the corresponding beam direction. According to the configuration method of the prior art, each CC needs to configure a TCI state pool (TCI state pool). Different CCs need to use the TCI state configured on the corresponding CC to determine their transceiver beams. This method requires the configuration of multiple TCI state pools, resulting in a large configuration signaling overhead. Summary of the invention

[0005] The embodiments of the present invention provide a beam indication method, device, terminal and base station, which are used to solve the problem that the activation method of the TCI state for the terminal of carrier aggregation CA in the prior art causes large configuration signaling overhead.

[0006] An embodiment of the present invention provides a beam indication method, which is performed by a terminal and includes:

[0007] receiving a first configuration for each candidate reference carrier in the carrier list, wherein the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier;

[0008] Determine a reference carrier from the candidate reference carriers;

[0009] receiving a common TCI state index sent by a base station, where the common TCI state index is used to indicate a TCI state in a TCI state pool corresponding to the reference carrier;

[0010] According to the TCI state indicated by the common TCI state index, a beam direction for channel and / or reference signal transmission on each carrier in the carrier list is determined.

[0011] Optionally, in the beam indication method, the determining a reference carrier from the candidate reference carriers comprises:

[0012] receiving a second configuration for each carrier in the carrier list except the candidate reference carrier, the second configuration comprising a carrier index;

[0013] The reference carrier is determined from the candidate reference carriers according to the carrier index.

[0014] Optionally, the beam indication method further comprises:

[0015] A plurality of carrier lists indicated by a base station through first signaling are received, wherein a reference carrier is configured in one of the carrier lists.

[0016] Optionally, in the beam indication method, the determining a reference carrier from the candidate reference carriers comprises:

[0017] receiving a second signaling sent by a base station for activating a TCI state, wherein the second signaling carries an index indication, and determining the reference carrier from the candidate reference carriers according to the index indication; or

[0018] A third signaling is received and sent by a base station to indicate a TCI state in an activated TCI state, wherein the third signaling carries an index indication, and the reference carrier is determined from the candidate reference carriers according to the index indication.

[0019] Optionally, in the beam indication method, the determining a reference carrier from the candidate reference carriers comprises:

[0020] Reporting an index indication to a base station;

[0021] The reference carrier is determined from the candidate reference carriers according to the index indication.

[0022] An embodiment of the present invention further provides a beam indication method, which is performed by a base station and includes:

[0023] Sending a first configuration of each candidate reference carrier in the corresponding carrier list to the terminal, where the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier;

[0024] Determine a reference carrier from the candidate reference carriers;

[0025] Sending a common TCI state index 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;

[0026] According to the TCI state indicated by the common TCI state index, a beam direction for channel and / or reference signal transmission on each carrier in the carrier list is determined.

[0027] Optionally, in the beam indication method, the determining a reference carrier from the candidate reference carriers comprises:

[0028] Sending a second configuration of each carrier in the corresponding carrier list except the candidate reference carrier to the terminal, where the second configuration includes a carrier index;

[0029] The reference carrier is determined from the candidate reference carriers according to the carrier index.

[0030] Optionally, the beam indication method further comprises:

[0031] A plurality of the carrier lists are indicated to the terminal through first signaling, wherein one of the carrier lists is configured with a reference carrier.

[0032] Optionally, in the beam indication method, the determining a reference carrier from the candidate reference carriers comprises:

[0033] sending a second signaling for activating the TCI state to the terminal, wherein the second signaling carries an index indication, and determining the reference carrier from the candidate reference carriers according to the index indication; or

[0034] A third signaling for indicating one of the activated TCI states is sent to the terminal, wherein the third signaling carries an index indication, and the reference carrier is determined from the candidate reference carriers according to the index indication.

[0035] Optionally, in the beam indication method, the determining a reference carrier from the candidate reference carriers comprises:

[0036] receiving an index indication reported by a terminal;

[0037] The reference carrier is determined from the candidate reference carriers according to the index indication.

[0038] An embodiment of the present invention further provides a terminal, which includes a memory, a transceiver, and a processor:

[0039] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0040] receiving a first configuration for each candidate reference carrier in the carrier list, wherein the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier;

[0041] Determine a reference carrier from the candidate reference carriers;

[0042] receiving a common TCI state index sent by a base station, where the common TCI state index is used to indicate a TCI state in a TCI state pool corresponding to the reference carrier;

[0043] According to the TCI state indicated by the common TCI state index, a beam direction for channel and / or reference signal transmission on each carrier in the carrier list is determined.

[0044] Optionally, in the terminal, the processor determining the reference carrier from the candidate reference carriers comprises:

[0045] receiving a second configuration for each carrier in the carrier list except the candidate reference carrier, the second configuration comprising a carrier index;

[0046] The reference carrier is determined from the candidate reference carriers according to the carrier index.

[0047] Optionally, in the terminal, the processor is further configured to:

[0048] A plurality of carrier lists indicated by a base station through first signaling are received, wherein a reference carrier is configured in one of the carrier lists.

[0049] Optionally, in the terminal, the processor determining the reference carrier from the candidate reference carriers comprises:

[0050] receiving a second signaling sent by a base station for activating a TCI state, wherein the second signaling carries an index indication, and determining the reference carrier from the candidate reference carriers according to the index indication; or

[0051] A third signaling is received and sent by a base station to indicate a TCI state in an activated TCI state, wherein the third signaling carries an index indication, and the reference carrier is determined from the candidate reference carriers according to the index indication.

[0052] Optionally, in the terminal, the processor determining the reference carrier from the candidate reference carriers comprises:

[0053] Reporting an index indication to a base station;

[0054] The reference carrier is determined from the candidate reference carriers according to the index indication.

[0055] An embodiment of the present invention further provides a base station, which includes a memory, a transceiver, and a processor:

[0056] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0057] Sending a first configuration of each candidate reference carrier in the corresponding carrier list to the terminal, where the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier;

[0058] Determine a reference carrier from the candidate reference carriers;

[0059] Sending a common TCI state index 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;

[0060] According to the TCI state indicated by the common TCI state index, a beam direction for channel and / or reference signal transmission on each carrier in the carrier list is determined.

[0061] Optionally, in the base station, the processor determines the reference carrier from the candidate reference carriers, comprising:

[0062] Sending a second configuration of each carrier in the corresponding carrier list except the candidate reference carrier to the terminal, where the second configuration includes a carrier index;

[0063] The reference carrier is determined from the candidate reference carriers according to the carrier index.

[0064] Optionally, in the base station, the processor is further configured to:

[0065] A plurality of the carrier lists are indicated to the terminal through first signaling, wherein one of the carrier lists is configured with a reference carrier.

[0066] Optionally, in the base station, the processor determining the reference carrier from the candidate reference carriers comprises:

[0067] sending a second signaling for activating the TCI state to the terminal, wherein the second signaling carries an index indication, and determining the reference carrier from the candidate reference carriers according to the index indication; or

[0068] A third signaling for indicating one of the activated TCI states is sent to the terminal, wherein the third signaling carries an index indication, and the reference carrier is determined from the candidate reference carriers according to the index indication.

[0069] Optionally, in the base station, the processor determining the reference carrier from the candidate reference carriers comprises:

[0070] receiving an index indication reported by a terminal;

[0071] The reference carrier is determined from the candidate reference carriers according to the index indication.

[0072] An embodiment of the present invention further provides a beam indication device, which is applied to a terminal, and includes:

[0073] A configuration receiving unit is configured to receive a first configuration for each candidate reference carrier in the carrier list, wherein the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier;

[0074] A first determining unit, configured to determine a reference carrier from the candidate reference carriers;

[0075] An index receiving unit, configured to receive a common TCI state index sent by a base station, wherein the common TCI state index is used to indicate a TCI state in a TCI state pool corresponding to the reference carrier;

[0076] The second determination unit is used to determine the beam direction for channel and / or reference signal transmission on each carrier in the carrier list according to the TCI state indicated by the common TCI state index.

[0077] An embodiment of the present invention further provides a beam indication device, which is applied to a base station, and includes:

[0078] A configuration sending unit is configured to send a first configuration of each candidate reference carrier in the corresponding carrier list to the terminal, where the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier;

[0079] A third determining unit, configured to determine a reference carrier from the candidate reference carriers;

[0080] An index sending unit, 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;

[0081] The fourth determination unit is used to determine the beam direction for channel and / or reference signal transmission on each carrier in the carrier list according to the TCI state indicated by the common TCI state index.

[0082] An embodiment of the present invention further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the beam indication method as described in any one of the above items.

[0083] The beneficial effects of the present invention are:

[0084] By adopting the beam indication method described in the embodiment of the present invention, for the carriers in the carrier list, it is only necessary to configure the TCI state pool for the candidate reference carriers in the carrier list. When performing beam indication, all carriers in the carrier list determine the beam direction according to the TCI in the TCI state pool of a reference carrier in the candidate reference carrier, and transmit the channel and / or reference signal. Therefore, by adopting the beam indication method described in the embodiment of the present invention, since the TCI state pool is only configured on the candidate reference carrier in the carrier list, compared with the prior art that requires configuring the TCI state pool on each carrier in the carrier list, the overhead of configuration signaling can be greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0086] Figure 1 A structural diagram showing a network system applicable to an embodiment of the present application;

[0087] Figure 2 A schematic diagram showing a flow chart of a beam indication method according to one embodiment of the present invention;

[0088] Figure 3 A schematic diagram showing a flow chart of a beam indication method according to another embodiment of the present invention;

[0089] Figure 4 A schematic diagram showing the structure of a beam pointing device according to one embodiment of the present invention;

[0090] Figure 5 A schematic diagram showing the structure of a terminal according to an embodiment of the present invention;

[0091] Figure 6 A schematic diagram showing the structure of a beam pointing device according to another embodiment of the present invention;

[0092] Figure 7 A schematic diagram showing the structure of a base station according to an embodiment of the present invention. DETAILED DESCRIPTION

[0093] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0094] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein, for example, are implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, the process, method, system, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0095] In the embodiments of the present application, the term "and / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0096] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0097] The following is an introduction to the embodiments of the present application in conjunction with the accompanying drawings. The mode indication method, terminal device, and network device provided in the embodiments of the present application can be applied to a wireless communication system. The wireless communication system can be a system using the fifth generation (5th Generation, 5G) mobile communication technology (hereinafter referred to as a 5G system). Those skilled in the art can understand that the 5G NR system is only an example and is not a limitation.

[0098] See also Figure 1 , Figure 1 is a structural diagram of a network system to which the embodiments of the present application can be applied, such as Figure 1As shown, it includes a user terminal 11 and a base station 12, wherein the user terminal 11 may be a user equipment (UE), for example, it may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a personal digital assistant (PDA), a mobile Internet device (Mobile Internet Device, MID) or a wearable device (Wearable Device) and other terminal side devices. It should be noted that the specific type of the user terminal 11 is not limited in the embodiment of the present application. The above-mentioned base station 12 may be a base station of 5G and later versions (for example: gNB, 5G NR NB), or a base station in other communication systems, or referred to as a node B. It should be noted that in the embodiment of the present application, only a 5G base station is taken as an example, but the specific type of the base station 12 is not limited.

[0099] An embodiment of the present application provides a beam indication method and device to solve the problem that the activation method of the TCI state for a terminal of carrier aggregation CA in the prior art causes large configuration signaling overhead.

[0100] Among them, the method and the device are based on the same application concept. Since the method and the device solve the problem in a similar principle, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0101] like Figure 2 As shown, an embodiment of the present invention provides a beam indication method, which is performed by a terminal, and the method includes:

[0102] S210, receiving a first configuration for each candidate reference carrier in a carrier list, where the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier;

[0103] S220, determining a reference carrier from the candidate reference carriers;

[0104] S230, receiving a common TCI state index sent by a base station, where the common TCI state index is used to indicate a TCI state in a TCI state pool corresponding to the reference carrier;

[0105] S240: Determine a beam direction for channel and / or reference signal transmission on each carrier in the carrier list according to the TCI state indicated by the common TCI state index.

[0106] By adopting the beam indication method described in the embodiment of the present invention, for the carriers in the carrier list, it is not necessary to configure a TCI state pool for each carrier, and it is only necessary to configure a TCI state pool for the candidate reference carriers in the carrier list. When performing beam indication, all carriers in the carrier list determine the beam direction according to the TCI in the TCI state pool of a reference carrier in the candidate reference carriers, and transmit the channel and / or reference signal. Therefore, by adopting the beam indication method described in the embodiment of the present invention, since the TCI state pool is only configured on the candidate reference carriers in the carrier list, compared with the prior art that requires configuring the TCI state pool on each carrier in the carrier list, the overhead of configuration signaling can be greatly reduced.

[0107] In the beam indication method described in the embodiment of the present invention, a plurality of carriers are recorded in the carrier list, and the candidate reference carrier is a part of the carriers recorded in the carrier list, and the number is one or more; in step S210, the terminal receives the first configuration of each candidate reference carrier in the carrier list from the base station, such as a PDSCH configuration sent through RRC signaling; wherein the PDSCH configuration includes a TCI state pool configured for the candidate reference carrier. Optionally, TCI state pools are configured for different candidate reference carriers respectively.

[0108] In step S220, a reference carrier is determined from the candidate reference carriers configured with the TCI state pool, that is, one of the candidate reference carriers is determined as the reference carrier. In this embodiment of the present invention, the reference carrier may be determined by the base station through signaling or reported by the terminal. The specific implementation method will be described in detail in the following description.

[0109] In step S230, the terminal receives a common TCI state index sent by the base station, where the TCI state index is used to indicate a target TCI state, where the target TCI state is one of the TCI states in the TCI state pool of the reference carrier determined in step S220.

[0110] In step S240, the beam direction is determined according to the target TCI state, and the channel and / or reference signal transmission on each carrier in the carrier list adopts the determined beam direction. In the following description of the embodiment of the present invention, in the carrier list, the carrier configured with the TCI state pool when receiving the first configuration is referred to as a candidate reference carrier; the carrier selected from the candidate reference carrier according to the base station indication or the terminal determination is referred to as a reference carrier.

[0111] In the embodiment of the present invention, optionally, after step S240, the method further includes:

[0112] The determined beam direction is adopted to transmit channels and / or reference signals on all carriers in the carrier list.

[0113] In the beam indication method described in the embodiment of the present invention, optionally, the candidate reference carrier is part of the carriers recorded in the carrier list, that is, the TCI state pool can be configured only for part of the carriers in the carrier list. The reference carrier determined from the candidate reference carriers is one of the candidate reference carriers.

[0114] Optionally, in the carrier list, the number of candidate reference carriers is one or at least two, and the specific number is not limited.

[0115] In an embodiment of the present invention, optionally, all carriers that use the TCI state of the same reference carrier to determine the beam direction can be divided into the same carrier list. On this basis, all carriers configured for the terminal can be divided into different carrier lists according to the different reference carriers based on which the beam direction is determined.

[0116] 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. Among them, the base station can configure PDSCH resources for each carrier through Radio Resource Control (RRC) signaling. In an embodiment of the present invention, for the candidate reference carriers in the carrier list, the base station configures a TCI state pool in the PDSCH configuration. Optionally, the TCI state pool includes TCI states, and each state is 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.

[0117] Optionally, the carrier configured by the base station for the terminal may include multiple candidate reference carriers, and each candidate reference carrier is configured with a TCI state pool.

[0118] Optionally, a carrier list includes a candidate reference carrier, which is also the reference carrier that needs to be determined. All carriers in the carrier list use the TCI state in the TCI state pool configured by the candidate reference carrier to determine the beam direction.

[0119] The beam indication method described in the embodiment of the present invention may, optionally, further include:

[0120] receiving a second configuration for each carrier in the carrier list except the candidate reference carrier, the second configuration comprising a carrier index;

[0121] The reference carrier is determined from the candidate reference carriers according to the carrier index.

[0122] The carrier index is used to indicate the reference carrier.

[0123] In an embodiment of the present invention, the second configuration is the PDSCH configuration. The base station configures a carrier index in the PDSCH resources configured for carriers other than the candidate reference carrier through RRC signaling, which is used to indicate one of the candidate reference carriers in the carrier list. That is, based on the candidate reference carrier, the reference carrier can be determined (corresponding to the above-mentioned step S220), and the corresponding carrier is instructed to adopt the TCI state in the TCI state pool configuration of the indicated candidate reference carrier to determine the beam direction.

[0124] Using the beam indication method described in an embodiment of the present invention, the base station configures a PDSCH resource for a carrier other than a candidate reference carrier through RRC signaling, and the indicated carrier index is one of the candidate reference carriers. The candidate reference carrier determined according to the carrier index is also the reference carrier, and can indicate the TCI state in the TCI state pool configuration of the reference carrier corresponding to the carrier index on the configured carrier to determine the beam direction.

[0125] For example, assume that 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 the PDSCH configuration of CC0, the base station configures a TCI state pool, which includes 128 TCI states, each state 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 only configures a carrier index CC0 (that is, indicating that the candidate reference carrier corresponding to the carrier index CC0 is a reference carrier), indicating that the configured non-reference carriers all use the TCI state on the reference carrier CC0.

[0126] The beam indication method described in the embodiment of the present invention may, optionally, further include:

[0127] receiving the carrier list indicated by a base station through first signaling;

[0128] Optionally, one candidate reference carrier is configured in one carrier list, that is, one reference carrier is configured.

[0129] In this way, according to the carrier list in the first signaling, it is determined that the channel and / or reference signal is transmitted on each carrier in the carrier list, and the TCI state configured for the reference carrier is adopted.

[0130] Optionally, the first signaling may be a high-level signaling, and the carrier list is configured by the high-level signaling. According to the carrier list configured by the high-level signaling, the carriers in the carrier list can be determined, and the carriers configured with the TCI state pool in the carrier list are all used as candidate reference carriers (that is, reference carriers), and the beam direction is determined according to the TCI state in the TCI state pool configured for the reference carrier.

[0131] Using this implementation, when multiple carriers are configured for the terminal, where the multiple carriers may include at least two candidate reference carriers, the carrier list is configured through high-level signaling, and one candidate reference carrier is configured in one carrier list, that is, one reference carrier is configured, indicating that the carriers in the same carrier list adopt the TCI state in the TCI state pool configured by the same reference carrier to determine the beam direction.

[0132] Optionally, the beam indication method described in the embodiment of the present invention further includes:

[0133] receiving a second signaling sent by a base station for activating a TCI state, wherein the second signaling carries an index indication for indicating the reference carrier, and determining the reference carrier from the candidate reference carriers according to the index indication (corresponding to step S220 in the embodiment of the present invention); or

[0134] Receive a third signaling sent by a base station to indicate the TCI state in the activated TCI state, wherein the third signaling carries an index indication for indicating the reference carrier, and determine the reference carrier from the candidate reference carriers according to the index indication (corresponding to step S220 in the embodiment of the present invention).

[0135] Specifically, according to the index indication carried in the second signaling and the third signaling, the TCI state on the candidate reference carrier indicated by the index indication can be determined to determine the beam direction.

[0136] Specifically, when a second signaling for activating the TCI state is received from a base station and the second signaling carries an index indication of a candidate reference carrier, the reference carrier is determined according to the candidate reference carrier corresponding to the index indication, and the TCI state in the TCI state pool configured according to the reference carrier is determined to determine the TCI state corresponding to all carriers in the carrier list.

[0137] Alternatively, when a third signaling sent by a receiving base station to indicate the TCI state in the activated TCI state carries an index indication of a candidate reference carrier, the reference carrier is determined according to the candidate reference carrier corresponding to the index indication, and the TCI state in the TCI state pool configured according to the reference carrier is determined to determine the TCI state corresponding to all carriers in the carrier list.

[0138] Optionally, in an embodiment of the present invention, the second signaling is but not limited to being only a media access control-control element (MAC-CE) signaling, and the second signaling is used to perform beam indication and activate part of the TCI states in the TCI state pool in the reference carrier;

[0139] The third signaling is but not limited to being only DCI signaling, and the DCI signaling is used to indicate one of the activated TCI states, and the beam direction can be determined according to the TCI state.

[0140] In another implementation manner of the beam indication method described in the embodiment of the present invention, the method further includes:

[0141] Reporting an index indication to a base station, used to indicate a reference carrier among the candidate reference carriers;

[0142] In this way, the reference carrier is determined from the candidate reference carriers according to the index indication (corresponding to step S220 in the embodiment of the present invention).

[0143] By adopting this implementation mode, when the base station configures at least two candidate reference carriers, the terminal can determine the reference carrier among the candidate reference carriers and report the index indication corresponding to the determined reference carrier to the base station; based on the index indication, the base station can determine the TCI state in the TCI state pool of the candidate reference carrier corresponding to the index indication and determine the beam direction.

[0144] The specific implementation process of the beam indication method described in the embodiment of the present invention is described in detail below in conjunction with the specific implementation manner.

[0145] Implementation Method 1

[0146] The carrier list is set to include 10 carriers CC, which are represented as CC0, CC1, ..., CC9. The base station configures PDSCH resources for each carrier through RRC signaling.

[0147] The base station is set to determine CC0 as a candidate reference carrier. This implementation method is used to receive a first configuration for the candidate reference carrier, including: receiving a PDSCH configuration (first configuration) of CC0, in which the base station configures a TCI state pool, which includes 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) domain, as shown in the following table:

[0148] QCL domain Source RS Type D

[0149] The QCL domain in the TCI state indicates that the target channel / reference signal has a QCL relationship of Type D with the source reference signal SourceRS. Type D indicates that the type of QCL is beam direction information, that is, this TCI state indicates that the beam in the same direction as the source reference signal is used.

[0150] Assuming that CC1, ..., CC9 are non-reference carriers, the TCI state pool is not configured in the PDSCH configuration of each CC, but only one carrier index CC0 is configured to indicate the reference carrier (that is, the second configuration of each carrier in the carrier list except the candidate reference carrier is received), so that the reference carrier can be determined from the candidate reference carriers, and it indicates that the above-mentioned carriers in the carrier list all use the TCI state on CC0.

[0151] When performing beam indication, the base station first sends MAC-CE signaling (second signaling) to the terminal to activate 8 TCI states in the TCI state pool of the reference carrier, as follows:

[0152] Code Point Activate TCI status 000 TCI-State3 001 TCI-State9 010 TCI-State18 011 TCI-State25 100 TCI-State36 101 TCI-State7 110 TCI-State100 111 TCI-State88

[0153] Afterwards, the base station sends DCI signaling (third signaling) to the terminal, indicating one of the TCI states (that is, receiving the public TCI state index sent by the base station, and the public TCI state index specifically includes the indicated TCI state index), such as TCI-State9. After receiving this DCI signaling, the base station and the terminal will use the beam direction of the source reference signal of Type D in TCI-State9 to transmit and receive uplink and downlink channels (physical downlink control channel (Physical Downlink Control Channel, PDCCH) / physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) / physical uplink control channel (Physical Uplink Control Channel, PUCCH) / physical uplink shared channel (Physical Uplink Shared Channel, PUSCH)) on all carriers, as well as uplink and downlink reference signals (CSI-RS / SRS). This source reference signal is the reference signal configured on carrier CC0.

[0154] Implementation Method 2

[0155] The carrier list is set to include 10 CCs, which are represented as CC0, CC1, ..., CC9. The base station configures PDSCH resources for each carrier through RRC signaling.

[0156] The base station is set to determine CC0 and CC4 as candidate reference carriers. In this implementation, the first configuration of the candidate reference carrier is received, including: receiving the PDSCH configuration (first configuration) of CC0, in which the base station configures a TCI state pool, which includes 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:

[0157] QCL domain Source RS Type D

[0158] Among them, the above QCL domain in the TCI state is expressed as: the target channel / reference signal has a QCL relationship of Type D with the source reference signal SourceRS. Type D indicates that the type of QCL is beam direction information, that is, this TCI state indicates that the beam in the same direction as the source reference signal is used. Similarly, in the PDSCH configuration of the candidate reference carrier CC4, the base station also configures a TCI state pool, including 128 TCI states.

[0159] In this implementation, for non-reference carriers CC1, ..., CC3 and CC5, ..., CC9, in the PDSCH configuration of each CC, neither a TCI state pool nor a reference carrier index is configured.

[0160] When performing beam indication, the base station first sends MAC-CE signaling (second signaling) to the terminal to activate 8 TCI states in the TCI state pool of the reference carrier, as follows:

[0161] Code Point Activate TCI status 000 TCI-State3 001 TCI-State9 010 TCI-State18 011 TCI-State25 100 TCI-State36 101 TCI-State7 110 TCI-State100 111 TCI-State88

[0162] In this implementation manner, the reference carrier index, such as CC4, is also indicated in the MAC-CE signaling, that is, according to the reference carrier index, the reference carrier in the candidate reference carrier can be determined. This reference carrier index is used to indicate the carrier to which the 8 TCI states belong, that is, the TCI state pool using CC4 is determined.

[0163] Afterwards, the base station sends DCI signaling (third signaling) to the terminal, indicating one of the TCI states (that is, the terminal receives the second configuration of each carrier in the carrier list except the candidate reference carrier), such as TCI-State9. After receiving this DCI signaling, the base station and the terminal will use the beam direction of the Type D source reference signal in TCI-State9 in the CC4 state pool to transmit and receive uplink and downlink channels (PDCCH / PDSCH / PUCCH / PUSCH) on all carriers, as well as uplink and downlink reference signals (Channel State Indication-Reference Signal (CSI-RS) / Sounding Reference Signal (SRS)). This source reference signal is the reference signal configured on CC4.

[0164] In another implementation, in addition to the above-mentioned method of indicating the reference carrier index when sending MAC-CE signaling (second signaling) to the terminal, the terminal may report an index indication (including the index of the reference carrier), and the terminal determines the reference carrier from two candidate reference carriers. Both the base station and the terminal use the reference carrier reported by the terminal in the index indication to determine the TCI status of the non-reference carrier.

[0165] Implementation Method 3

[0166] The carrier list is set to include 10 CCs, which are represented as CC0, CC1, ..., CC9. The base station configures PDSCH resources for each carrier through RRC signaling.

[0167] The base station is set to determine CC0 and CC4 as candidate reference carriers. Using this implementation, the terminal receives the first configuration of the candidate reference carrier, including: in the PDSCH configuration (first configuration) of receiving CC0, the base station configures a TCI state pool, which includes 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:

[0168] QCL domain CC3 Source RS Type D

[0169] Among them, the above-mentioned QCL domain in the TCI state is expressed as: the target channel / reference signal has a Type D QCL relationship with the source reference signal. At the same time, the reference signal CC index is configured in the TCI state, which is used to indicate the carrier (such as CC3) where the source reference signal in the TCI state is located. Type D indicates that the type of QCL is beam direction information, that is, this TCI state indicates that the beam in the same direction as the source reference signal on CC3 is used. Similarly, the terminal receives the first configuration of the candidate reference carrier, which also includes: receiving the PDSCH configuration of CC4, and the TCI state pool is also configured in the PDSCH configuration, including 128 TCI states.

[0170] For non-reference carriers of CC1, ..., CC3 and CC5, ..., CC9, in the PDSCH configuration of each CC, neither the TCI state pool nor the reference carrier index is configured.

[0171] When performing beam indication, the base station first sends a 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 the reference carrier in the candidate reference carrier according to the reference carrier index. In addition, the MAC-CE signaling is also used to activate 8 TCI states in the TCI state pool in the reference carrier CC0, as follows:

[0172] Code Point Activate TCI status 000 TCI-State3 001 TCI-State9 010 TCI-State18 011 TCI-State25 100 TCI-State36 101 TCI-State7 110 TCI-State100 111 TCI-State88

[0173] Afterwards, the base station sends DCI signaling (third signaling) to the terminal, indicating one of the TCI states (that is, the terminal receives the second configuration of each carrier in the carrier list except the candidate reference carrier), such as TCI-State 9. After receiving this DCI signaling, the base station and the terminal will use the beam direction of the Type D source reference signal in TCI-State 9 in the CC0 state pool to transmit and receive uplink and downlink channels (PDCCH / PDSCH / PUCCH / PUSCH) on all carriers, as well as uplink and downlink reference signals (CSI-RS / SRS).

[0174] In another implementation mode, optionally, the MAC-CE signaling does not include a reference carrier index indication, but instead indicates a reference carrier index CC0 in the DCI signaling, i.e., the terminal can determine the reference carrier according to the carrier index indicated in the DCI signaling. The specific implementation mode will not be described in detail here.

[0175] In another implementation manner, optionally, the MAC-CE signaling 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 a reference carrier. For example, according to the following TCI state, where the reference signal CC index is CC3, the reference carrier is determined to be CC3.

[0176] QCL CC3 Source RS Type D

[0177] Implementation Method 4

[0178] The carrier list is set to include 10 CCs, which are represented as CC0, CC1, ..., CC9. The base station configures PDSCH resources for each carrier through RRC signaling.

[0179] CC0 is set as a candidate reference carrier. In this implementation, the terminal receives a first configuration for the candidate reference carrier, including: receiving a PDSCH configuration (first configuration) of CC0, in which the base station configures a TCI state pool, which includes 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:

[0180] QCL domain Source RS Type D

[0181] The QCL domain in the TCI state indicates that the target channel / reference signal has a Type D QCL relationship with the source reference signal. Type D indicates that the type of QCL is beam direction information, that is, this TCI state indicates that the beam in the same direction as the source reference signal is used.

[0182] Similarly, CC8 can also be set as a candidate reference beam, and the terminal receives the first configuration of the candidate reference carrier, which also includes: receiving the PDSCH configuration of CC8, in which the base station also configures a TCI state pool, including 128 TCI states. The remaining 8 CCs are not configured with a TCI state pool, nor are they configured with a reference CC index.

[0183] Further, the base station configures CC list 1 through high-level signaling 1 (first signaling), which includes {CC0, CC1, CC2, CC3, CC4}. The base station uses high-level signaling 2 (first signaling) to configure CC list 2, which includes {CC5, CC6, CC7, CC8, CC9}. The system predefines that the CCs in each list use the CC (candidate reference carrier) configured with the TCI state pool as the reference carrier CC. In this way, CC1, CC2, CC3 and CC4 all use the TCI state on CC0; CC5, CC6, CC7 and CC9 all use the TCI state on CC8.

[0184] When performing beam indication, the base station first sends MAC-CE signaling (second signaling) to the terminal to activate 8 TCI states in the TCI state pool of the reference carrier, as follows:

[0185] Code Point Activate TCI status 000 TCI-State3 001 TCI-State9 010 TCI-State18 011 TCI-State25 100 TCI-State36 101 TCI-State7 110 TCI-State100 111 TCI-State88

[0186] Afterwards, the base station sends DCI signaling (third signaling) to the terminal, indicating one of the TCI states (that is, the terminal receives the second configuration of each carrier in the carrier list except the candidate reference carrier), such as TCI-State9. After receiving this DCI signaling, the base station and the terminal will use the beam direction of the source reference signal of Type D in TCI-State9 on CC0 to 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}. This source reference signal is the reference signal configured on CC0. At the same time, the base station and the terminal will use the beam direction of the Type D source reference signal in TCI-State9 on CC8 to 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}. This source reference signal is the reference signal configured on CC8. Using the above implementation method, different carrier lists are configured through high-level signaling, each carrier list includes a candidate reference carrier, and all carriers in the carrier list use the TCI state of the reference carrier to determine the beam direction.

[0187] In addition to the above implementation, another implementation, optionally, includes at least two candidate reference carriers in the carrier list. When performing beam indication, the base station first sends MAC-CE signaling to the terminal to activate 8 TCI states in the TCI state pool of the reference carrier. At the same time, in this MAC-CE signaling, a reference CC index (indicating the reference carrier) is carried, such as CC8, that is, according to the reference carrier index, the terminal can determine the reference carrier. After that, the base station sends DCI signaling to the terminal to indicate one of the TCI states, such as TCI-State9. After receiving this DCI signaling, the base station and the terminal will use the beam direction of the Type D source reference signal in TCI-State9 on CC8 to transmit and receive uplink and downlink channels (PDCCH / PDSCH / PUCCH / PUSCH) on all carriers, as well as uplink and downlink reference signals (CSI-RS / SRS). This source reference signal is the reference signal configured on CC8.

[0188] Another embodiment of the present invention further provides a beam indication method, which is executed by a base station, such as Figure 3 As shown, the method includes:

[0189] S310, sending a first configuration of each candidate reference carrier in the corresponding carrier list to the terminal, where the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier;

[0190] S320, determining a reference carrier from the candidate reference carriers;

[0191] S330, sending a common TCI state index 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;

[0192] S340: Determine a beam direction for channel and / or reference signal transmission on each carrier in the carrier list according to the TCI state indicated by the common TCI state index.

[0193] By adopting the beam indication method described in the embodiment of the present invention, for the carriers in the carrier list, it is not necessary to configure a TCI state pool for each carrier, and it is only necessary to configure a TCI state pool for the candidate reference carriers in the carrier list. When performing beam indication, all carriers in the carrier list determine the beam direction according to the TCI in the TCI state pool of a reference carrier in the candidate reference carriers, and transmit the channel and / or reference signal. Therefore, by adopting the beam indication method described in the embodiment of the present invention, since the TCI state pool is only configured on the candidate reference carrier in the carrier list, compared with the prior art that requires configuring the TCI state pool on each carrier in the carrier list, the overhead of configuration signaling can be greatly reduced.

[0194] In the embodiment of the present invention, optionally, after step S340, the method further includes:

[0195] The determined beam direction is adopted to transmit channels and / or reference signals on all carriers in the carrier list.

[0196] In the beam indication method described in the embodiment of the present invention, optionally, the candidate reference carrier is part of the carriers recorded in the carrier list, that is, the TCI state pool can be configured only for part of the carriers in the carrier list. The reference carrier determined from the candidate reference carriers is one of the candidate reference carriers.

[0197] Optionally, in step S320, determining a reference carrier from the candidate reference carriers includes:

[0198] Sending a second configuration of each carrier in the corresponding carrier list except the candidate reference carrier to the terminal, where the second configuration includes a carrier index;

[0199] The reference carrier is determined from the candidate reference carriers according to the carrier index.

[0200] The carrier index is used to indicate the reference carrier.

[0201] In an embodiment of the present invention, optionally, the second configuration is a PDSCH configuration, and the base station configures a carrier index in the PDSCH resources configured for carriers other than the candidate reference carrier through RRC signaling, which is used to indicate the reference carrier in the carrier list, and instructs the corresponding carrier to adopt the TCI state in the TCI state pool configuration of the indicated reference carrier to determine the beam direction.

[0202] Optionally, the method further comprises:

[0203] A plurality of the carrier lists are indicated to the terminal through first signaling, wherein one of the carrier lists is configured with a reference carrier.

[0204] In this way, according to the carrier list in the first signaling, it is determined that the channel and / or reference signal is transmitted on each carrier in the carrier list, and the TCI state configured for the reference carrier is adopted.

[0205] Using this implementation, when multiple carriers are configured for the terminal, where the multiple carriers may include at least two candidate reference carriers, the carrier list is configured through high-level signaling, and one candidate reference carrier is configured in one carrier list, that is, one reference carrier is configured, indicating that the carriers in the same carrier list adopt the TCI state in the TCI state pool configured by the same reference carrier to determine the beam direction.

[0206] Optionally, in step S320, determining a reference carrier from the candidate reference carriers includes:

[0207] sending a second signaling for activating the TCI state to the terminal, wherein the second signaling carries an index indication, and determining the reference carrier from the candidate reference carriers according to the index indication; or

[0208] A third signaling for indicating one of the activated TCI states is sent to the terminal, wherein the third signaling carries an index indication, and the reference carrier is determined from the candidate reference carriers according to the index indication.

[0209] Specifically, the index indication carried in the second signaling and the third signaling is also used to indicate the TCI state on the reference carrier indicated by the index indication to determine the beam direction.

[0210] Optionally, in step S320, determining a reference carrier from the candidate reference carriers includes:

[0211] receiving an index indication reported by a terminal;

[0212] The reference carrier is determined from the candidate reference carriers according to the index indication.

[0213] Using this implementation, when the base station configures at least two candidate reference carriers, the terminal can report an index indication to the base station to indicate the TCI state in the TCI state pool of the candidate reference carrier corresponding to the index indication to determine the beam direction.

[0214] It should be noted that the description and specific implementation process of each step of the beam indication method described in the embodiment of the present invention when executed by the terminal is also applicable to execution by the base station side, and will not be described in detail here.

[0215] Therefore, all descriptions about the terminal in the above embodiments are applicable to the embodiments of the base station and can achieve the same technical effects.

[0216] like Figure 4 As shown, an embodiment of the present invention provides a beam indication device, and the beam indication device 400 includes:

[0217] A configuration receiving unit 410 is configured to receive a first configuration for each candidate reference carrier in a carrier list, wherein the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier;

[0218] A first determining unit 420 is configured to determine a reference carrier from the candidate reference carriers;

[0219] An index receiving unit 430 is configured to receive a common TCI state index sent by a base station, where the common TCI state index is used to indicate a TCI state in a TCI state pool corresponding to the reference carrier;

[0220] The second determination unit 440 is used to determine the beam direction for channel and / or reference signal transmission on each carrier in the carrier list according to the TCI state indicated by the common TCI state index.

[0221] Optionally, in the beam indication device, the first determining unit 420 determines the reference carrier from the candidate reference carriers, comprising:

[0222] receiving a second configuration for each carrier in the carrier list except the candidate reference carrier, the second configuration comprising a carrier index;

[0223] The reference carrier is determined from the candidate reference carriers according to the carrier index.

[0224] Optionally, in the beam indication device, the receiving unit 410 is configured to further:

[0225] A plurality of carrier lists indicated by a base station through first signaling are received, wherein a reference carrier is configured in one of the carrier lists.

[0226] Optionally, in the beam indication device, the first determining unit 420 determines the reference carrier from the candidate reference carriers, comprising:

[0227] receiving a second signaling sent by a base station for activating a TCI state, wherein the second signaling carries an index indication, and determining the reference carrier from the candidate reference carriers according to the index indication; or

[0228] A third signaling is received and sent by a base station to indicate a TCI state in an activated TCI state, wherein the third signaling carries an index indication, and the reference carrier is determined from the candidate reference carriers according to the index indication.

[0229] Optionally, in the beam indication device, the first determining unit 420 determines the reference carrier from the candidate reference carriers, comprising:

[0230] Reporting an index indication to a base station;

[0231] The reference carrier is determined from the candidate reference carriers according to the index indication.

[0232] It should be noted that the embodiment of the terminal is a terminal that corresponds one-to-one to the above-mentioned method embodiment, and all implementation methods in the above-mentioned method embodiment are applicable to the embodiment of the terminal and can achieve the same technical effect.

[0233] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0234] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0235] like Figure 5 As shown, an embodiment of the present invention further provides a terminal, including a processor 500, a transceiver 510, a memory 520, and a program stored in the memory 520 and executable on the processor 500; wherein the transceiver 510 is connected to the processor 500 and the memory 520 through a bus interface, and the transceiver 510 is used to receive and send data under the control of the processor 500. wherein the processor 500 is used to read the program in the memory and execute the following process:

[0236] receiving a first configuration for each candidate reference carrier in the carrier list, wherein the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier;

[0237] Determine a reference carrier from the candidate reference carriers;

[0238] receiving a common TCI state index sent by a base station, where the common TCI state index is used to indicate a TCI state in a TCI state pool corresponding to the reference carrier;

[0239] According to the TCI state indicated by the common TCI state index, a beam direction for channel and / or reference signal transmission on each carrier in the carrier list is determined.

[0240] Optionally, in the terminal, the processor 500 determining the reference carrier from the candidate reference carriers includes:

[0241] receiving a second configuration for each carrier in the carrier list except the candidate reference carrier, the second configuration comprising a carrier index;

[0242] The reference carrier is determined from the candidate reference carriers according to the carrier index.

[0243] Optionally, in the terminal, the processor 500 is further configured to:

[0244] A plurality of carrier lists indicated by a base station through first signaling are received, wherein a reference carrier is configured in one of the carrier lists.

[0245] Optionally, in the terminal, the processor 500 determining the reference carrier from the candidate reference carriers includes:

[0246] receiving a second signaling sent by a base station for activating a TCI state, wherein the second signaling carries an index indication, and determining the reference carrier from the candidate reference carriers according to the index indication; or

[0247] A third signaling is received and sent by a base station to indicate a TCI state in an activated TCI state, wherein the third signaling carries an index indication, and the reference carrier is determined from the candidate reference carriers according to the index indication.

[0248] Optionally, in the terminal, the processor 500 determining the reference carrier from the candidate reference carriers includes:

[0249] Reporting an index indication to a base station;

[0250] The reference carrier is determined from the candidate reference carriers according to the index indication.

[0251] Among them, Figure 5In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 500 and various circuits of memory represented by memory 520 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 510 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, including wireless channels, wired channels, optical cables, and other transmission media. For different user devices, the user interface 530 may also be an interface capable of externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0252] The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 400 when performing operations.

[0253] Optionally, the processor 500 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0254] The processor calls the computer program stored in the memory to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0255] It should be noted here that the above-mentioned terminal provided in the embodiment of the present invention can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0256] An embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of the beam indication method applied to a terminal are implemented. The processor-readable storage medium may be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), and semiconductor storage (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.

[0257] like Figure 6 As shown, an embodiment of the present invention provides a beam indication device, and the beam indication device 600 includes:

[0258] A configuration sending unit 610 is configured to send a first configuration of each candidate reference carrier in a corresponding carrier list to a terminal, wherein the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier;

[0259] A third determining unit 620 is configured to determine a reference carrier from the candidate reference carriers;

[0260] An 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;

[0261] The fourth determination unit 640 is used to determine the beam direction for channel and / or reference signal transmission on each carrier in the carrier list according to the TCI state indicated by the common TCI state index.

[0262] Optionally, in the beam indication device, the third determining unit 620 determines the reference carrier from the candidate reference carriers, including:

[0263] Sending a second configuration of each carrier in the corresponding carrier list except the candidate reference carrier to the terminal, where the second configuration includes a carrier index;

[0264] The reference carrier is determined from the candidate reference carriers according to the carrier index.

[0265] Optionally, in the beam indication device, the configuration sending unit 610 is further used for:

[0266] A plurality of the carrier lists are indicated to the terminal through first signaling, wherein one of the carrier lists is configured with a reference carrier.

[0267] Optionally, in the beam indication device, the third determining unit 620 determines the reference carrier from the candidate reference carriers, comprising:

[0268] sending a second signaling for activating the TCI state to the terminal, wherein the second signaling carries an index indication, and determining the reference carrier from the candidate reference carriers according to the index indication; or

[0269] A third signaling for indicating one of the activated TCI states is sent to the terminal, wherein the third signaling carries an index indication, and the reference carrier is determined from the candidate reference carriers according to the index indication.

[0270] Optionally, in the beam indication device, the third determining unit 620 determines the reference carrier from the candidate reference carriers, comprising:

[0271] receiving an index indication reported by a terminal;

[0272] The reference carrier is determined from the candidate reference carriers according to the index indication.

[0273] It should be noted that the embodiment of the beam indication device is a base station that corresponds one-to-one to the above-mentioned method embodiment. All implementation methods in the above-mentioned method embodiment are applicable to the embodiment of the base station and can achieve the same technical effect.

[0274] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0275] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0276] like Figure 7 As shown, an embodiment of the present invention also provides a base station, including a processor 700, a transceiver 710, a memory 720, and a program stored in the memory 720 and executable on the processor 700; wherein the transceiver 710 is connected to the processor 700 and the memory 720 via a bus interface; the transceiver 710 is used to receive and send data under the control of the processor N00.

[0277] The processor 700 is used to read the program in the memory and execute the following process:

[0278] Sending a first configuration of each candidate reference carrier in the corresponding carrier list to the terminal, where the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier;

[0279] Determine a reference carrier from the candidate reference carriers;

[0280] Sending a common TCI state index 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;

[0281] According to the TCI state indicated by the common TCI state index, a beam direction for channel and / or reference signal transmission on each carrier in the carrier list is determined.

[0282] Optionally, in the base station, the processor 700 determines the reference carrier from the candidate reference carriers, including:

[0283] Sending a second configuration of each carrier in the corresponding carrier list except the candidate reference carrier to the terminal, where the second configuration includes a carrier index;

[0284] The reference carrier is determined from the candidate reference carriers according to the carrier index.

[0285] Optionally, in the base station, the processor 700 is further configured to:

[0286] A plurality of the carrier lists are indicated to the terminal through first signaling, wherein one of the carrier lists is configured with a reference carrier.

[0287] Optionally, in the base station, the processor 700 determines the reference carrier from the candidate reference carriers, comprising:

[0288] sending a second signaling for activating the TCI state to the terminal, wherein the second signaling carries an index indication, and determining the reference carrier from the candidate reference carriers according to the index indication; or

[0289] A third signaling for indicating one of the activated TCI states is sent to the terminal, wherein the third signaling carries an index indication, and the reference carrier is determined from the candidate reference carriers according to the index indication.

[0290] Optionally, in the base station, the processor 700 determines the reference carrier from the candidate reference carriers, comprising:

[0291] receiving an index indication reported by a terminal;

[0292] The reference carrier is determined from the candidate reference carriers according to the index indication.

[0293] Among them, Figure 7 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 700 and memory represented by memory 720. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 710 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium may include a wireless channel, a wired channel, an optical cable, and the like. The processor 700 is responsible for managing the bus architecture and general processing, and the memory 700 may store data used by the processor 700 when performing operations.

[0294] 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). The processor may also adopt a multi-core architecture.

[0295] It should be noted here that the above-mentioned base station provided in the embodiment of the present invention can implement all the method steps implemented in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0296] The embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of the beam indication method applied to a base station are implemented. The processor-readable storage medium may be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), and semiconductor storage (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.

[0297] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0298] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, 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 a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1A device that provides the functions specified in a block or multiple blocks.

[0299] These processor executable instructions may also be stored in a processor readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0300] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0301] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A beam indication method, characterized in that: Executed by a terminal, the method includes: Receive a first configuration for each candidate reference carrier in the carrier list, wherein the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier; the candidate reference carrier is a part of the carriers recorded in the carrier list; Determine a reference carrier from the candidate reference carriers; receiving a common TCI state index sent by a base station, where the common TCI state index is used to indicate a TCI state in a TCI state pool corresponding to the reference carrier; According to the TCI state indicated by the common TCI state index, a beam direction for transmitting a channel and / or a reference signal on each carrier in the carrier list is determined.

2. The beam indication method according to claim 1, characterized in that: The determining a reference carrier from the candidate reference carriers comprises: receiving a second configuration for each carrier in the carrier list except the candidate reference carrier, the second configuration comprising a carrier index; The reference carrier is determined from the candidate reference carriers according to the carrier index.

3. The beam indication method according to claim 1, characterized in that: The method further comprises: A plurality of carrier lists indicated by a base station through first signaling are received, wherein a reference carrier is configured in one of the carrier lists.

4. The beam indication method according to claim 1, characterized in that: The determining a reference carrier from the candidate reference carriers comprises: receiving a second signaling sent by a base station for activating a TCI state, wherein the second signaling carries an index indication, and determining the reference carrier from the candidate reference carriers according to the index indication; or A third signaling is received and sent by a base station to indicate a TCI state in an activated TCI state, wherein the third signaling carries an index indication, and the reference carrier is determined from the candidate reference carriers according to the index indication.

5. The beam indication method according to claim 1, characterized in that: The determining a reference carrier from the candidate reference carriers comprises: Reporting an index indication to a base station; The reference carrier is determined from the candidate reference carriers according to the index indication.

6. A beam indication method, characterized in that: Executed by a base station, the method includes: Sending a first configuration of each candidate reference carrier in the corresponding carrier list to the terminal, where the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier; the candidate reference carrier is a part of the carriers recorded in the carrier list; Determine a reference carrier from the candidate reference carriers; Sending a common TCI state index 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; According to the TCI state indicated by the common TCI state index, a beam direction for transmitting a channel and / or a reference signal on each carrier in the carrier list is determined.

7. The beam indication method according to claim 6, characterized in that: The determining a reference carrier from the candidate reference carriers comprises: Sending a second configuration of each carrier in the corresponding carrier list except the candidate reference carrier to the terminal, where the second configuration includes a carrier index; The reference carrier is determined from the candidate reference carriers according to the carrier index.

8. The beam indication method according to claim 6, characterized in that: The method further comprises: A plurality of the carrier lists are indicated to the terminal through first signaling, wherein one of the carrier lists is configured with a reference carrier.

9. The beam indication method according to claim 6, characterized in that: The determining a reference carrier from the candidate reference carriers comprises: sending a second signaling for activating the TCI state to the terminal, wherein the second signaling carries an index indication, and determining the reference carrier from the candidate reference carriers according to the index indication; or A third signaling for indicating one of the activated TCI states is sent to the terminal, wherein the third signaling carries an index indication, and the reference carrier is determined from the candidate reference carriers according to the index indication.

10. The beam indication method according to claim 6, characterized in that: The determining a reference carrier from the candidate reference carriers comprises: receiving an index indication reported by a terminal; The reference carrier is determined from the candidate reference carriers according to the index indication.

11. A terminal, characterized in that: Including memory, transceiver, processor: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: Receive a first configuration for each candidate reference carrier in the carrier list, wherein the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier; the candidate reference carrier is a part of the carriers recorded in the carrier list; Determine a reference carrier from the candidate reference carriers; receiving a common TCI state index sent by a base station, where the common TCI state index is used to indicate a TCI state in a TCI state pool corresponding to the reference carrier; According to the TCI state indicated by the common TCI state index, a beam direction for transmitting a channel and / or a reference signal on each carrier in the carrier list is determined.

12. The terminal according to claim 11, characterized in that: The processor determining a reference carrier from the candidate reference carriers includes: receiving a second configuration for each carrier in the carrier list except the candidate reference carrier, the second configuration comprising a carrier index; The reference carrier is determined from the candidate reference carriers according to the carrier index.

13. The terminal according to claim 11, characterized in that: The processor is further configured to: A plurality of carrier lists indicated by a base station through first signaling are received, wherein a reference carrier is configured in one of the carrier lists.

14. The terminal according to claim 11, characterized in that: The processor determining a reference carrier from the candidate reference carriers includes: receiving a second signaling sent by a base station for activating a TCI state, wherein the second signaling carries an index indication, and determining the reference carrier from the candidate reference carriers according to the index indication; or A third signaling is received and sent by a base station to indicate a TCI state in an activated TCI state, wherein the third signaling carries an index indication, and the reference carrier is determined from the candidate reference carriers according to the index indication.

15. The terminal according to claim 11, characterized in that: The processor determining a reference carrier from the candidate reference carriers includes: Reporting an index indication to a base station; The reference carrier is determined from the candidate reference carriers according to the index indication.

16. A base station, characterized in that: Including memory, transceiver, processor: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: Sending a first configuration of each candidate reference carrier in the corresponding carrier list to the terminal, where the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier; the candidate reference carrier is a part of the carriers recorded in the carrier list; Determine a reference carrier from the candidate reference carriers; Sending a common TCI state index 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; According to the TCI state indicated by the common TCI state index, a beam direction for transmitting a channel and / or a reference signal on each carrier in the carrier list is determined.

17. The base station according to claim 16, characterized in that: The processor determines a reference carrier from the candidate reference carriers, including: Sending a second configuration of each carrier in the corresponding carrier list except the candidate reference carrier to the terminal, where the second configuration includes a carrier index; The reference carrier is determined from the candidate reference carriers according to the carrier index.

18. The base station according to claim 16, characterized in that: The processor is further configured to: A plurality of the carrier lists are indicated to the terminal through first signaling, wherein one of the carrier lists is configured with a reference carrier.

19. The base station according to claim 16, characterized in that: The processor determining a reference carrier from the candidate reference carriers includes: sending a second signaling for activating the TCI state to the terminal, wherein the second signaling carries an index indication, and determining the reference carrier from the candidate reference carriers according to the index indication; or A third signaling for indicating one of the activated TCI states is sent to the terminal, wherein the third signaling carries an index indication, and the reference carrier is determined from the candidate reference carriers according to the index indication.

20. The base station according to claim 16, characterized in that The processor determining a reference carrier from the candidate reference carriers includes: receiving an index indication reported by a terminal; The reference carrier is determined from the candidate reference carriers according to the index indication.

21. A beam pointing device, characterized in that: Applied to a terminal, the device comprises: A configuration receiving unit is configured to receive a first configuration for each candidate reference carrier in the carrier list, wherein the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier; the candidate reference carrier is a part of the carriers recorded in the carrier list; A first determining unit, configured to determine a reference carrier from the candidate reference carriers; An index receiving unit, configured to receive a common TCI state index sent by a base station, wherein the common TCI state index is used to indicate a TCI state in a TCI state pool corresponding to the reference carrier; The second determination unit is used to determine the beam direction for channel and / or reference signal transmission on each carrier in the carrier list according to the TCI state indicated by the common TCI state index.

22. A beam pointing device, characterized in that: Applied to a base station, the device comprises: A configuration sending unit is configured to send a first configuration of each candidate reference carrier in the corresponding carrier list to the terminal, wherein the first configuration includes a transmission configuration indication TCI state pool configured for each candidate reference carrier; the candidate reference carrier is a part of the carriers recorded in the carrier list; A third determining unit, configured to determine a reference carrier from the candidate reference carriers; An index sending unit, 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; The fourth determination unit is used to determine the beam direction for channel and / or reference signal transmission on each carrier in the carrier list according to the TCI state indicated by the common TCI state index.

23. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the beam indication method described in any one of claims 1 to 5, or to enable the processor to execute the beam indication method described in any one of claims 6 to 10.

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