CN114828239A

CN114828239A - Beam indication method, device and storage medium

Info

Publication number: CN114828239A
Application number: CN202110343337.2A
Authority: CN
Inventors: 李辉; 高秋彬; 陈润华; 骆亚娟; 宋磊
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-01-18
Filing date: 2021-03-30
Publication date: 2022-07-29

Abstract

The embodiment of the application provides a beam indicating method, a beam indicating device and a storage medium, wherein the method comprises the steps of receiving downlink control information, and determining a target Transmission Configuration Indication (TCI) state group based on the downlink control information, wherein the target TCI state group is used for representing an applied channel and/or a link; and transmitting and receiving signals based on the beams corresponding to the target TCI state group. The beam indicating method, the device and the storage medium provided by the embodiment of the application determine the channel and/or the link applied to the TCI state group corresponding to each code point by introducing the identifier or the indicating information of the channel and/or the link into the TCI state group, and further perform indication of the corresponding beam information through the code points based on the downlink control information, so as to be suitable for various different application scenarios and improve the utilization rate of resources.

Description

Beam indication method, device and storage medium

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a beam indicating method, apparatus, and storage medium.

Background

In an NR (New Radio, New air interface) system, a Downlink Channel includes a Downlink data Channel PDSCH (Physical Downlink Shared Channel), a Downlink Control Channel PDCCH (Physical Downlink Control Channel), and an Uplink Channel includes an Uplink data Channel PUSCH (Physical Uplink Shared Channel) and an Uplink Control Channel PUCCH (Physical Uplink Control Channel). For high frequency transmission (FR 2 band in NR), due to limited transmission range, usually the uplink and downlink channels are transmitted after beamforming to enhance coverage. The direction of the shaped beam can be determined by beam scanning of the uplink and downlink reference signals.

In the existing NR protocol, different channels use different beam indication signaling, and each channel performs beam indication independently. Thus different channels may be transmitted using different respective beams. An important scenario in practical applications is that multiple channels use the same beam direction. For example, the PDCCH for resource scheduling and the PDSCH transmitting user data are transmitted using the same beam direction; the same beam direction is also used for uplink control channel PUCCH and uplink data channel PUSCH. When beam reciprocity exists, the uplink channel and the downlink channel will also use the same beam direction. At this time, the existing manner of independent beam indication increases the complexity of the system and the signaling indication overhead. In order to overcome the above problems, in the NR Rel-17 protocol, a method of indicating multiple channel beams using one beam indication signaling is introduced, which activates a set of Transmission Configuration Indicator (TCI) states through a MAC-CE, and then indicates one of the activated TCI states using Downlink Control Information (DCI).

When the uplink and downlink channels are reciprocal, the beam indicated by the beam indication signaling can be used for both the uplink channel and the downlink channel; when the maximum allowable radiation (MPE) problem caused by human body occlusion occurs or the terminal needs to switch the uplink beam, the uplink channel uses a beam different from the downlink channel, so that the beam indication signaling needs to indicate the uplink channel beam and the downlink channel beam respectively. How to use the beam indication signaling to distinguish the above different application scenarios has no solution in the prior art.

Disclosure of Invention

To solve the problems in the prior art, embodiments of the present application provide a beam indicating method, a beam indicating apparatus, and a storage medium.

In a first aspect, an embodiment of the present application provides a beam indication method, applied to a user equipment UE, including:

receiving downlink control information, and determining a target Transmission Configuration Indication (TCI) state group based on the downlink control information, wherein the target TCI state group is used for representing an applied channel and/or link;

and transmitting and receiving signals based on the beam corresponding to the target TCI state group.

Optionally, the determining a target transmission configuration indication TCI state set based on the downlink control information, where the target TCI state set is used to characterize the applied channel and/or link, includes:

determining a target Transmission Configuration Indication (TCI) state group based on the downlink control information; the target TCI state group comprises at least one information domain, wherein the information domain comprises an uplink beam indication information domain, a downlink beam indication information domain, an uplink and downlink shared beam indication information domain, an uplink power control information domain, a carrier set information domain and a channel indication information domain; the uplink power control information field is used for indicating an uplink power control parameter or a parameter set corresponding to a TCI state of uplink transmission; the carrier set information field is used for indicating one or more carriers to which a TCI state group applies; the channel indication information field is used to indicate that the TCI status group applies to one or more channels.

Optionally, the information field further includes: the transmission point TRP indicates an information field.

Optionally, the target TCI status group further includes cell ID information.

Optionally, before receiving the downlink control information, the method further includes:

receiving a control signaling sent by a network device, where the control signaling is used to activate at least one TCI status group, and the activated at least one TCI status group includes the target TCI status group.

Optionally, the control signaling further includes: indication information whether the information fields included in the activated respective TCI status groups are valid.

Optionally, the control signaling further includes: indication information of the information field usage indication included in each activated TCI status group.

Optionally, the indication information of the information domain usage indication is that each activated TCI status group is associated with an independent information domain usage indication information, or that all activated TCI status groups are associated with the same information domain usage indication information.

Optionally, the indication information of the information field usage indication is used to indicate an uplink and downlink shared state or an uplink and downlink respective usage state.

determining a target Transmission Configuration Indication (TCI) state group based on the downlink control information and a predefined relationship; wherein the predefined relationship is at least one TCI state set predetermined by the system and the corresponding relationship of the channel and/or the link.

Optionally, the downlink control information is DCI signaling; and the code point indicated by the DCI signaling corresponds to the target TCI state group included in at least one TCI state group activated by the control signaling.

In a second aspect, an embodiment of the present application provides a beam indication method, which is applied to a network device, and includes:

sending downlink control information to User Equipment (UE), wherein the downlink control information is used for the UE to determine a target Transmission Configuration Indication (TCI) state group, and the target TCI state group is used for representing an applied channel and/or a link;

and transmitting and receiving signals based on the beams corresponding to the target TCI state group.

Optionally, the determining a target transmission configuration indicates a TCI status group, where the target TCI status group is used to characterize the applied channel and/or link, and includes:

Optionally, the target TCI status group further includes cell ID information.

Optionally, before sending the downlink control information to the UE, the method further includes:

and sending a control signaling to the UE, wherein the control signaling is used for activating at least one TCI state group, and the activated at least one TCI state group comprises the target TCI state group.

In a third aspect, an embodiment of the present application further provides a user equipment, including a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and implementing the steps of the beam indicating method according to the first aspect as described above.

In a fourth aspect, an embodiment of the present application further provides a network device, including a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and implementing the steps of the beam indicating method according to the second aspect as described above.

In a fifth aspect, this application further provides a processor-readable storage medium, which stores a computer program for causing a processor to execute the steps of the beam indicating method according to the first aspect or the second aspect.

The beam indicating method, the device and the storage medium provided by the embodiment of the application determine the channel and/or the link applied to the TCI state group corresponding to each code point by introducing the identifier or the indicating information of the channel and/or the link into the TCI state group, and further perform indication of the corresponding beam information through the code points based on the downlink control information, so as to be suitable for various different application scenarios and improve the utilization rate of resources.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic flow chart of a beam indicating method according to an embodiment of the present application;

fig. 2 is a second flowchart of a beam indicating method according to an embodiment of the present application;

fig. 3 is a schematic diagram of a multi-TRP transmission scenario provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a user equipment according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a beam indicating apparatus according to an embodiment of the present application;

fig. 7 is a second schematic structural diagram of a beam indicating apparatus according to an embodiment of the present application.

Detailed Description

In the embodiment of the present application, the term "and/or" describes an association relationship of associated objects, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the NR system, the downlink channel includes a downlink data channel PDSCH, a downlink control channel PDCCH, and the uplink channel includes an uplink data channel PUSCH and an uplink control channel PUCCH. For high frequency transmission (FR 2 band in NR), due to limited transmission range, usually the uplink and downlink channels are transmitted after beamforming to enhance coverage. The direction of the shaped beam can be determined by beam scanning of uplink and downlink reference signals, for example, using state information reference signals CSI-RS or uplink sounding reference signals SRS in different directions to perform beam scanning, and selecting the direction of the reference signal with the best beam quality for uplink or downlink transmission. The beam directions of different channels are determined, and the beam when the signaling indication channel is transmitted, namely the beam indication, needs to be used.

In the NR Rel-15/16 protocol, for the PUCCH channel, the base station semi-statically configures multiple beam directions to the terminal through higher layer signaling SpatialRelationInfo, and indicates activation of one of them through the MAC-CE. For the PUSCH, the uplink beam selected by the base station is indirectly indicated by the spatialrelalationinfo of the SRS resource indicated by the SRI field in the dynamic signaling DCI. For the PDCCH channel, the base station configures a plurality of TCI states for each CORESET through high-layer signaling, and activates one of the TCI states through MAC-CE indication. 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.

Different channels use different beam indication signaling, and each channel performs beam indication independently. Thus different channels may be transmitted using different respective beams. An important scenario in practical applications is that multiple channels use the same beam direction. For example, the PDCCH for resource scheduling and the PDSCH transmitting user data are transmitted using the same beam direction; the same beam direction is also used for uplink control channel PUCCH and uplink data channel PUSCH. When beam reciprocity exists, the uplink channel and the downlink channel will also use the same beam direction. At this time, the current manner of independent beam indication increases the complexity of the system and the signaling indication overhead. In order to overcome the above problems, in the NR Rel-17 protocol, a method of indicating multiple channel beams by using one beam indication signaling is introduced, which activates a set of TCI states through MAC-CE, and then indicates one of the activated TCI states by using DCI.

When the uplink and downlink channels are reciprocal, the beam indicated by the beam indication signaling can be used for both the uplink channel and the downlink channel; when an MPE problem caused by human body occlusion occurs or a terminal needs to switch an uplink beam, an uplink channel uses a beam different from a downlink channel, so that the beam indication signaling needs to respectively indicate the uplink channel beam and the downlink channel beam; when multiple TRP transmissions are indicated, beam indication signaling requires beams indicating different TRPs (corresponding to different links). The embodiments of the present application provide solutions for the above different application scenarios.

The technical scheme provided by the embodiment of the application can be suitable for various systems, particularly 5G systems. For example, the applicable system may be a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) system, a long term evolution (long term evolution, LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, an LTE-a (long term evolution) system, a universal mobile system (universal mobile telecommunications system, UMTS), a Worldwide Interoperability for Mobile Access (WiMAX) system, a New Radio network (NR 5) system, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5GS), and the like.

A terminal device (e.g., UE) referred to in embodiments of the present application may refer to a device that provides voice and/or data connectivity to a user, a handheld device with wireless connectivity, or other processing device connected to a wireless modem, etc. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal device, for example, a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN). Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in this embodiment of the present application.

The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for providing services to a terminal. A base station may also be referred to as an access point, or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to exchange received air frames with Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), may be a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), may be an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) System, may be a 5G Base Station (gbb) in a 5G network architecture (next evolution System), may be a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico Base Station), and the like, which are not limited in the embodiments of the present application. In some network architectures, a network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Fig. 1 is a schematic flow chart of a beam indication method provided in an embodiment of the present application, where the method may be applied to a UE, and as shown in fig. 1, the method at least includes the following steps:

step 100, receiving downlink control information, and determining a target Transmission Configuration Indication (TCI) state group based on the downlink control information, where the target TCI state group is used to characterize an applied channel and/or link;

the UE receives downlink control information (e.g., DCI) sent by a network device, for example, a gNB, and determines a target TCI state group indicated by the DCI from N previously activated TCI state groups based on the DCI information. Wherein N ═ 1 or N > 1.

Optionally, the gNB configures a TCI status pool including a plurality of TCI-states for the UE first, where each State therein may be indicated by a corresponding TCI-State id. For example, the first TCI State is indicated by TCI-State0, the second TCI State is indicated by TCI-State1, and so on; and one beam for each TCI-StateId.

The gNB may activate at least one state group in the state pool by sending an activation instruction to the UE. The activation command may be MAC-CE signaling, the state set includes at least one state, and each state set may be used to characterize an applied channel and/or link. The target state set includes at least one state, and each state is indicated by a corresponding TCI-StateId, and each TCI-StateId corresponds to a beam, so that an applied channel and/or link can be characterized, for example, an uplink channel or a downlink channel is applied.

And 101, transmitting and receiving signals based on the beams corresponding to the target TCI state group.

After receiving the MAC-CE signaling sent by the gNB, the UE is used for activating the N TCI state groups, and then receives the DCI sent by the gNB, wherein the code point indicated by the DCI corresponds to one TCI state group in the MAC-CE signaling. The UE may transmit and receive signals based on the beam corresponding to the target TCI state set.

In the beam indication method provided in the embodiment of the present application, the identifier or the indication information of the channel and/or the link is introduced into the TCI state group, the channel and/or the link applied to the TCI state group corresponding to each code point is determined, and then the indication of the corresponding beam information is performed through the code points based on the downlink control information, so as to be applicable to a plurality of different application scenarios, and improve the utilization rate of resources.

On the basis of the foregoing embodiments, the determining a target transmission configuration indication TCI state set based on the downlink control information, where the target TCI state set is used to characterize an applied channel and/or link, may be implemented in various ways, and two implementation ways are described below.

One implementation manner is as follows: and determining a target Transmission Configuration Indication (TCI) state group based on the downlink control information. The target TCI state group comprises at least one information domain, wherein the information domain comprises an uplink beam indication information domain, a downlink beam indication information domain, an uplink and downlink shared beam indication information domain, an uplink power control information domain, a carrier set information domain and a channel indication information domain; the uplink power control information field is used for indicating an uplink power control parameter or a parameter set corresponding to a TCI state of uplink transmission; the carrier set information field is used for indicating one or more carriers to which a TCI state group applies; the channel indication information field is used to indicate that the TCI status group applies to one or more channels.

Optionally, the uplink power control information field included in the information field may be used to indicate an uplink power control parameter or a parameter set corresponding to a TCI state of uplink transmission.

For example, a target TCI state set as shown in Table 1 includes two information fields.

TABLE 1

Optionally, the information field further includes: the transmission point TRP indicates an information field. For example, another target TCI state set shown in Table 2 includes four information fields. By adding the TRP indication information domain, flexible uplink and downlink beam indication and dynamic multi-TRP and single TRP switching can be realized.

TABLE 2

Optionally, the target TCI status set may also include cell ID information to indicate which cell, e.g., serving cell or other secondary cells, to use for.

As described above, the UE needs to receive control signaling (e.g., MAC-CE) sent by the gNB, where the MAC-CE may be used to activate at least one TCI status group, and the activated at least one TCI status group includes the target TCI status group.

Further, indication information of whether the information fields included in the activated respective TCI status groups are valid may also be included in the MAC-CE. For example, 1bit information can be used separately for each information field in table 1 to indicate whether this information field exists or is valid.

Further, indication information of the information field usage indication included in each activated TCI status group may also be included in the MAC-CE. For example, the "information field only used for downlink transmission or uplink and downlink joint transmission" has two meanings, and when only the information field exists in table 1, the meaning of the information field usage indication bit can be additionally used, for example, the information field usage indication bit is indicated as '1', which indicates that the information field is only used for downlink transmission. When table 1 includes not only this information field but also other information fields, for example, table 1 also includes an "only for uplink transmission" information field, it may be default that the meaning of the "only for downlink transmission or uplink and downlink joint transmission" information field is only for downlink transmission, and no additional indication information of the usage indication of the information field is needed.

Optionally, the indication information of the information field usage indication is that each activated TCI state group is associated with an independent information field usage indication information, or that all activated TCI state groups are associated with the same information field usage indication information.

Optionally, the indication information indicated by the information field usage is used to indicate an uplink and downlink shared state or an uplink and downlink respective usage state.

The other realization mode is as follows: determining a target Transmission Configuration Indication (TCI) state group based on the downlink control information and a predefined relationship; wherein the predefined relationship is at least one TCI state set predetermined by the system and the corresponding relationship of the channel and/or the link. Specifically, the system predefines a correspondence of the N TCI state sets with the channels and/or links.

Similarly, the UE also needs to receive control signaling (e.g., MAC-CE) sent by the gNB, where the MAC-CE may be used to activate at least one TCI status group, and the activated at least one TCI status group includes the target TCI status group. For example, the gNB sends MAC-CE signaling to the UE, which is used to activate N-8 states. As shown in table 3.

TABLE 3

Code point	Activating TCI states
		000	TCI-State3
001	TCI-State9
		010	TCI-State18
011	TCI-State25
		100	TCI-State36
101	TCI-State7
		110	TCI-State100
111	TCI-State88

And the gNB sends DCI signaling to the UE, and the code point indicated by the DCI signaling corresponds to the target TCI state group included in the at least one TCI state group activated by the control signaling. Specifically, the system predefines the first 4 code points to correspond to the transmission beam of TRP0 and the last 4 code points to correspond to the transmission beam of TRP 1. If the DCI sent by the TRP0 indicates code point '101', the TRP1 uses the beam corresponding to the TCI-State7 to perform data transmission; if the DCI sent by the TRP1 indicates code point '000', the TRP0 uses the beam corresponding to the TCI-State3 for data transmission; if the DCI transmitted by the TRP1 indicates code point '110', the TRP1 will use the beam corresponding to the TCI-State100 for data transmission.

Fig. 2 is a second flowchart of a beam indicating method according to an embodiment of the present invention, where the method may be applied to a network device such as a gNB, and as shown in fig. 2, the method at least includes the following steps:

step 200, sending downlink control information to User Equipment (UE), wherein the downlink control information is used for the UE to determine a target Transmission Configuration Indication (TCI) state group, and the target TCI state group is used for representing an applied channel and/or a link;

the gNB sends downlink control information (e.g., DCI) to the UE, and the UE determines a target TCI state group indicated by the DCI among N TCI state groups that have been activated previously based on the DCI information. Wherein N ═ 1 or N > 1.

Step 201, transmitting and receiving signals based on the beam corresponding to the target TCI state group.

After the gNB sends MAC-CE signaling to the UE, the MAC-CE signaling is used for activating N TCI state groups, and then DCI is sent, wherein a code point indicated by the DCI corresponds to one TCI state group in the MAC-CE signaling. The UE may perform signal transmission and reception based on the beam corresponding to the target TCI state group, and accordingly, the gNB may perform signal transmission and reception based on the beam corresponding to the target TCI state group.

Optionally, the uplink power control information field included in the information field may be used to indicate an uplink power control parameter or a parameter set corresponding to a TCI state of uplink transmission. As shown in table 1 above.

Optionally, the information field further includes: the transmission point TRP indicates an information field. As shown in table 2 above.

As described above, before the gNB sends the downlink control information to the UE, the method further includes: and the gNB sends a control signaling (MAC-CE) to the UE, wherein the control signaling is used for activating at least one TCI state group, and the activated at least one TCI state group comprises the target TCI state group.

Further, indication information of the information field usage indication included in each activated TCI status group may also be included in the MAC-CE.

Similarly, the gNB needs to send control signaling (e.g., MAC-CE) to the UE, and the MAC-CE may be configured to activate at least one TCI status group, where the activated at least one TCI status group includes the target TCI status group. Further, the gNB sends a DCI signaling to the UE, and the code point indicated by the DCI signaling corresponds to the target TCI state group included in the at least one TCI state group activated by the control signaling. See the description above with respect to table 3 for details.

In the method provided by the embodiment of the application, by introducing the identifier or the indication information of the channel and/or the link into the signaling for activating the TCI state, the channel and/or the link applied to the TCI state group corresponding to each code point is determined, and then the downlink control information performs indication of the corresponding beam information through the code points, so that the method is suitable for various different application scenarios and improves the utilization rate of resources.

The first implementation is further described below with reference to several examples.

Example 1:

it is assumed that the base station configures a TCI status pool containing S-128 TCI-states for the terminal. Each state of which is indicated by a corresponding TCI-StateId. E.g., the first of which is indicated by TCI-State0, the second of which is indicated by TCI-State1, and so on.

And the base station sends MAC-CE signaling to the terminal, wherein the MAC-CE signaling is used for activating the N-8 state groups. Wherein, for each state group, the following basic information fields are contained:

and simultaneously, 1bit information is respectively used for each information field to indicate whether the information field exists or is effective. Further, if only the first information domain exists, the use indication of the 1-bit information domain is additionally used, the use of the first information domain is distinguished, and the first information domain is only used for downlink transmission or uplink and downlink combined transmission.

For example, for state set1, its corresponding information field is represented as:

meanwhile, the bit corresponding to each information field is set to be '1', which indicates that the two information fields are effective. Thus, the status set indicates that the downlink uses TCI-State0 for beam transmission and the uplink uses TCI-State6 for beam transmission.

For state set2, its corresponding information field is represented as:

the first field corresponds to a bit of '0' and the second field corresponds to a bit of '1', indicating that only the second field is active. Thus, the status group indicates that the uplink uses the corresponding beam transmission of TCI-State 3.

For state set3, its corresponding information field is represented as:

the bit corresponding to the first field is '1', and the bit corresponding to the second field is '0', indicating that only the first field is valid. Meanwhile, the information field usage indication bit is indicated as '1', indicating that the information field is used only for downlink transmission. Thus, this status set indicates that only the beam transmission corresponding to TCI-State5 is used downstream.

And the base station sends DCI signaling to the terminal, wherein the DCI signaling comprises a TCI domain with 3 bits. Each set of values of the 3 bits corresponds to a code point, which corresponds to a set of states. For example, if the TCI field of the DCI takes a value of '010', the code point corresponds to the state group 3. According to the above information of State group 3, the terminal base station is instructed to use the beam of TCI-State5 for downlink transmission.

Example 2:

it is assumed that the base station configures a TCI status pool containing S-128 TCI-states for the terminal. Each state of which is indicated by a corresponding TCI-StateId. E.g., where the first TCI State is indicated by TCI-State0, the second TCI State is indicated by TCI-State1, and so on. For a multiple TRP scenario, multiple TRPs may transmit data to the same terminal, and fig. 3 is a schematic diagram of the multiple TRP transmission scenario provided in this embodiment, as shown in fig. 3. The following assumes that the system supports 2 TRP transmissions.

and simultaneously, 1bit information is respectively used for each information field to indicate whether the information field exists or is effective. Further, if only the first information domain and/or the third information domain exist, 1-bit information domain use indication is additionally used respectively, so that the use of the information domain is distinguished, and the information domain is only used for downlink transmission or uplink and downlink combined transmission.

the corresponding bits of the four information fields are respectively set to '1', '1', '0' and '0', which means that the former two information fields are effective and the latter two information fields are ineffective. Thus, this status set indicates that TRP0 uses the beam indicated by TCI-State2 for downlink transmission and the terminal uses the beam indicated by TCI-State6 for uplink transmission.

For state set2, its corresponding information field is represented as:

the corresponding bits of the four information fields are respectively set to '1', '0', '0', '1', which indicates that the first and fourth information fields are effective and the middle two information fields are invalid. Further, the information field usage indication of the first information field is set to '1', which indicates that the usage of the information field is TRP0 uplink and downlink joint transmission. Thus, this status group indicates that the beam indicated by TCI-State17 is used for uplink and downlink transmission between TRP0 and the terminal, and the beam indicated by TCI-State30 is used for uplink transmission between TRP1 and the terminal.

And the base station sends DCI signaling to the terminal, wherein the DCI signaling comprises a TCI domain with 3 bits. Each set of values of the 3 bits corresponds to a code point, which corresponds to a set of states. For example, if the TCI field of the DCI takes a value of '001', the code point corresponds to state group 2. According to the above information of State group 2, the beam indicated by TCI-State17 is used for uplink and downlink transmission between TRP0 and the terminal, and the beam indicated by TCI-State30 is used for uplink transmission between TRP1 and the terminal.

Example 3:

it is assumed that the base station configures a TCI status pool containing S-128 TCI-states for the terminal. Each state of which is indicated by a corresponding TCI-StateId. E.g., where the first TCI State is indicated by TCI-State0, the second TCI State is indicated by TCI-State1, and so on.

The base station sends MAC-CE signaling to the terminal, where the MAC-CE signaling is used to activate N-8 states (it may be understood that 8 state groups are activated, and only one state is included in each state group). And configuring corresponding power control parameters for each TCI state indicating uplink transmission. For example, the MAC-CE activates 8 TCI states, where TCI-State9 indicates an uplink and downlink transmission beam, TCI-State7 indicates an uplink transmission beam, and the remaining TCI states are used to indicate a downlink transmission beam. Thus, uplink power control parameters need to be configured for TCI-State9 and TCI-State 7.

Further, the MAC-CE may also indicate that the TCI states corresponding to the 8 code points may be used for a carrier set { CC1, CC2, CC3}, where CC1 represents carrier 1, CC2 represents carrier 2, and CC3 represents carrier 3. Alternatively, the first and second electrodes may be,

the MAC-CE indicates that the TCI status corresponding to the 8 codebooks shown may be used for carrier set 1. The carrier set1 includes carriers { CC1, CC2, CC3 }.

Further, the MAC-CE may also indicate that the TCI states corresponding to the 8 code points may be used for CORESET1 or CORESET 2. The CORESET group 1 comprises { CORESET0, CORESET1 and CORESET2}, and the CORESET group 2 comprises { CORESET3 and CORESET4 }. The CORESET group is configured by RRC. Specifically, the channel indication information field may use 2 bits, each of which corresponds to the CORESET1 and CORESET2, respectively. The field is '0, 1' indicating that the TCI state is for CORESET group 2, and the field is '1, 0' indicating that the TCI state is for CORESET group 1.

Similarly, the channel indication information field may also use 5 bits, each bit corresponding to a core set, to indicate that the TCI status is used for the core set.

And the base station sends DCI signaling to the terminal, wherein the DCI signaling comprises a TCI domain with 3 bits. Each set of values of the 3 bits corresponds to a code point, which corresponds to a state. For example, if the TCI field of the DCI takes a value of '001', the code point corresponds to TCI-State 9. At this time, the downlink transmission beam uses a beam corresponding to the TCI-State9, and the uplink transmission beam uses a beam corresponding to the TCI-State9 and uses the corresponding uplink power control parameter for uplink transmission.

Or, the uplink power control parameters may also be configured according to different uplink channels, respectively. As shown in the following table, some of the uplink power control parameters are configured for the PUSCH channel, the PUCCH channel, and the SRS, respectively.

Example 4:

And the base station sends MAC-CE signaling to the terminal, wherein the MAC-CE signaling is used for activating the N-8 state groups. Wherein for each state group, the following information fields are included:

thus, a 1-bit information field usage indication is used for each state group, and whether the state is an uplink and downlink shared state or an uplink and downlink individual use state is distinguished.

thus, according to the State '1' of the third domain, it is indicated that the State group indicates that the downlink uses TCI-State0 for beam transmission and the uplink uses TCI-State6 for beam transmission.

For state set3, its corresponding information field is represented as:

thus, according to the State '0' of the third domain, this State group indicates that both downlink and downlink use the corresponding beam transmission of TCI-State 5. If the State of the third field is '1', it indicates that only downlink transmission uses the beam transmission corresponding to TCI-State 5.

Example 5:

And the base station sends MAC-CE signaling to the terminal, wherein the MAC-CE signaling is used for activating the N-8 state groups. Wherein, for each state group, the following information fields are included:

for downlink transmission	For uplink transmission only
		TCI-StateId	TCI-StateId

Meanwhile, the MAC-CE signaling includes 1 independent information field, which is used to indicate whether all active state groups (N ═ 8) belong to the uplink and downlink shared state or the uplink and downlink individual use state. The following were used:

uplink and downlink shared ('0') or uplink and downlink used respectively ('1')
	1/0

For example, when the independent information field is configured to be 0, N-8 state groups indicating all activations are uplink and downlink shared states. All active 8 state groups at this time, only the first domain is active. For example:

for state set1, its corresponding information field is represented as:

for downlink transmission	For uplink transmission only
		TCI-State0	——

Thus, indicating this status group indicates that both uplink and downlink use TCI-State0 for corresponding beam transmissions.

For state set3, its corresponding information field is represented as:

for downlink transmission	For uplink transmission only
		TCI-State5	——

Thus, indicating this status group indicates that both uplink and downlink use TCI-State5 for corresponding beam transmissions.

When the independent information field is configured to be 1, all activated N-8 state groups are uplink and downlink use states respectively. All 8 state groups active at this time, both domains are active. For example,

for state set1, its corresponding information field is represented as:

for downlink transmission	For uplink transmission only
		TCI-State0	TCI-State6

Thus, the status group indicates that the downlink uses TCI-State0 for beam transmission and the uplink uses TCI-State6 for beam transmission.

Other state sets are similar.

Fig. 4 is a schematic structural diagram of a user equipment according to an embodiment of the present invention, and as shown in fig. 4, the user equipment 400 includes a memory 401, a transceiver 403, and a processor 401, where the processor 401 and the memory 402 may also be arranged separately physically.

A memory 402 for storing a computer program; a transceiver 403 for transceiving data under the control of the processor 401.

In particular, the transceiver 403 is used to receive and transmit data under the control of the processor 401.

Wherein in fig. 4, the bus system 404 may include any number of interconnected buses and bridges, with one or more processors, represented by processor 401, and various circuits, represented by memory 402, being linked together. The bus system 404 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 403 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over transmission media including wireless channels, wired channels, fiber optic cables, and the like. For different user devices, the user interface 405 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 401 is responsible for managing the bus system and general processing, and the memory 402 may store data used by the processor 401 in performing operations.

Alternatively, the processor 401 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 have a multi-core architecture.

The processor 401 calls the computer program stored in the memory 402 to execute any of the methods provided by the embodiments of the present application according to the obtained executable instructions, for example:

Optionally, the determining, based on the downlink control information, a target transmission configuration indication TCI status group, where the target TCI status group is used to characterize an applied channel and/or link, includes:

Optionally, the target TCI status group further includes cell ID information.

Optionally, before receiving the downlink control information, the operations further include:

Optionally, the indication information indicated by the information field usage is used to indicate an uplink and downlink shared state or an uplink and downlink respective usage state. Optionally, the determining a target transmission configuration indication TCI state set based on the downlink control information, where the target TCI state set is used to characterize the applied channel and/or link, includes:

It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

The user equipment provided by the embodiment of the application determines the channel and/or link applied to the TCI state group corresponding to each code point by introducing the identifier or the indication information of the channel and/or link into the TCI state group, and further performs indication of corresponding beam information through the code points based on the downlink control information, so as to be suitable for various different application scenarios and improve the utilization rate of resources.

Fig. 5 is a schematic structural diagram of a network device according to an embodiment of the present application, and as shown in fig. 5, the network device 500 includes a memory 502, a transceiver 503, and a processor 501: the processor 501 and the memory 502 may be physically separated from each other.

A memory 502 for storing a computer program; a transceiver 503 for transceiving data under the control of the processor 501.

In particular, in FIG. 5, the bus system 504 may include any number of interconnected buses and bridges with various circuits, in particular one or more processors represented by the processor 501 and a memory represented by the memory 502, linked together. The bus system 504 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 503 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 501 is responsible for managing the bus system and general processing, and the memory 502 may store data used by the processor 501 in performing operations.

The processor 501 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

The processor 501 is used for executing any of the methods provided by the embodiments of the present application according to the obtained executable instructions by calling the computer program stored in the memory 502, for example:

Optionally, the target TCI status group further includes cell ID information.

Optionally, before sending the downlink control information to the UE, the operations further include:

Fig. 6 is a schematic structural diagram of a beam indicating apparatus according to an embodiment of the present application, and as shown in fig. 6, the apparatus may be applied to a user equipment UE, and the apparatus includes:

a receiving module 601, configured to receive downlink control information, and determine a target transmission configuration indication TCI state group based on the downlink control information, where the target TCI state group is used to characterize an applied channel and/or link;

a first processing module 602, configured to transmit and receive signals based on a beam corresponding to the target TCI state group.

Optionally, the receiving module 601 is specifically configured to determine a target transmission configuration indication TCI status group based on the downlink control information; the target TCI state group comprises at least one information domain, wherein the information domain comprises an uplink beam indication information domain, a downlink beam indication information domain, an uplink and downlink shared beam indication information domain, an uplink power control information domain, a carrier set information domain and a channel indication information domain; the uplink power control information field is used for indicating an uplink power control parameter or a parameter set corresponding to a TCI state of uplink transmission; the carrier set information field is used for indicating one or more carriers to which a TCI state group applies; the channel indication information field is used to indicate that the TCI status group applies to one or more channels.

Optionally, the target TCI status group further includes cell ID information.

Optionally, before receiving the downlink control information, the receiving module 901 is further configured to:

Optionally, the receiving module 601 is specifically configured to determine a target transmission configuration indication TCI status group based on the downlink control information and a predefined relationship; wherein the predefined relationship is at least one TCI state set predetermined by the system and the corresponding relationship of the channel and/or the link.

Fig. 7 is a second schematic structural diagram of a beam indicating apparatus according to an embodiment of the present application, and as shown in fig. 7, the apparatus may be applied to a network device gNB, and the apparatus includes:

a sending module 701, configured to send downlink control information to a user equipment UE, where the downlink control information is used for the UE to determine a target transmission configuration indication TCI state group, and the target TCI state group is used to characterize an applied channel and/or link;

a second processing module 702, configured to transmit and receive signals based on the beam corresponding to the target TCI state group.

Optionally, the sending module 701 is specifically configured to determine a target transmission configuration indication TCI status group based on the downlink control information; the target TCI state group comprises at least one information domain, wherein the information domain comprises an uplink beam indication information domain, a downlink beam indication information domain, an uplink and downlink shared beam indication information domain, an uplink power control information domain, a carrier set information domain and a channel indication information domain; the uplink power control information field is used for indicating an uplink power control parameter or a parameter set corresponding to a TCI state of uplink transmission; the carrier set information field is used for indicating one or more carriers to which a TCI state group applies; the channel indication information field is used to indicate that the TCI status group applies to one or more channels.

Optionally, the target TCI status group further includes cell ID information.

Optionally, the sending module 701 is further configured to send a control signaling to the UE, where the control signaling is used to activate at least one TCI status group, and the activated at least one TCI status group includes the target TCI status group.

Optionally, the sending module 701 is specifically configured to determine a target transmission configuration indication TCI state group based on the downlink control information and a predefined relationship; wherein the predefined relationship is at least one TCI state set predetermined by the system and the corresponding relationship of the channel and/or the link.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

On the other hand, an embodiment of the present application further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, where the computer program is configured to cause the processor to execute the method provided in each of the above embodiments, and the method includes:

The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such 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 intended to include such modifications and variations as well.

Claims

1. A beam indication method is applied to User Equipment (UE), and is characterized by comprising the following steps:

2. The beam indication method according to claim 1, wherein the determining a target Transmission Configuration Indication (TCI) state set based on the downlink control information, the target TCI state set being used for characterizing the applied channels and/or links comprises:

3. The beam indication method of claim 2 wherein the information field further comprises: the transmission point TRP indicates an information field.

4. The beam indication method of claim 2 wherein the target TCI status group further comprises cell ID information.

5. The beam indication method according to claim 2, wherein before the receiving the downlink control information, the method further comprises:

6. The beam indication method of claim 5, wherein the control signaling further comprises: indication information whether the information fields included in the activated respective TCI status groups are valid.

7. The beam indication method of claim 5, wherein the control signaling further comprises: indication information of the information field usage indication included in each activated TCI status group.

8. The beam indicating method of claim 7, wherein the indication information of the information field usage indication is that each activated TCI status group is associated with a separate information field usage indication information, or that all activated TCI status groups are associated with the same information field usage indication information.

9. The beam indicating method of claim 8, wherein the indication information of the information field usage indication is used to indicate uplink and downlink shared status or uplink and downlink usage status.

10. The beam indication method according to claim 1, wherein the determining a target Transmission Configuration Indication (TCI) state set based on the downlink control information, the target TCI state set being used for characterizing the applied channels and/or links comprises:

11. The beam indicating method of claim 10, wherein before the receiving the downlink control information, the method further comprises:

12. The beam indicating method according to claim 5 or 11, wherein the downlink control information is DCI signaling; and the code point indicated by the DCI signaling corresponds to the target TCI state group included in at least one TCI state group activated by the control signaling.

13. A beam indication method is applied to a network device, and is characterized by comprising the following steps:

14. The method according to claim 13, wherein the determining a target transmission configuration indicates a TCI state set, the target TCI state set being used to characterize the applied channel and/or link, comprises:

15. The beam indication method of claim 14 wherein said information field further comprises: the transmission point TRP indicates an information field.

16. The beam indication method of claim 14 wherein the target TCI status set further comprises cell ID information.

17. The beam indicating method of claim 14, wherein before the sending the downlink control information to the UE, the method further comprises:

18. The beam indication method of claim 17, further comprising in the control signaling: indication information whether the information fields included in the activated respective TCI status groups are valid.

19. The beam indication method of claim 17, further comprising in the control signaling: indication information of the information field usage indication included in each activated TCI status group.

20. The beam indicating method of claim 19, wherein the indication information of the information field usage indication is that each activated TCI status group is associated with a separate information field usage indication information, or that all activated TCI status groups are associated with the same information field usage indication information.

21. The beam indicating method of claim 20, wherein the indication information of the information field usage indication is used to indicate uplink and downlink shared status or uplink and downlink usage status.

22. The method according to claim 13, wherein the determining a target transmission configuration indicates a TCI state set, the target TCI state set being used to characterize the applied channel and/or link, comprises:

23. The beam indicating method of claim 22, wherein before the receiving the downlink control information, the method further comprises:

24. The beam indicating method of claim 17 or 23, wherein the downlink control information is DCI signaling; and the code point indicated by the DCI signaling corresponds to the target TCI state group included in at least one TCI state group activated by the control signaling.

25. A user equipment comprising a memory, a transceiver, a processor; the method is characterized in that:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

26. The UE of claim 25, wherein the determining a target TCI state set based on the downlink control information, the target TCI state set being used to characterize the applied channel and/or link comprises:

27. The UE of claim 26, wherein the information field further comprises: the transmission point TRP indicates an information field.

28. The user equipment of claim 26, wherein the target TCI state group further comprises cell ID information.

29. The UE of claim 26, wherein before the receiving the downlink control information, the operations further comprise:

30. The ue of claim 29, wherein the control signaling further comprises: indication information whether the information fields included in the activated respective TCI status groups are valid.

31. The ue of claim 29, wherein the control signaling further comprises: indication information of the information field usage indication included in each activated TCI status group.

32. The beam indicating method of claim 31, wherein the indication information of the information field usage indication is that each activated TCI status group is associated with a separate information field usage indication information, or that all activated TCI status groups are associated with the same information field usage indication information.

33. The beam indicating method of claim 32, wherein the indication information of the information field usage indication is used to indicate uplink and downlink shared status or uplink and downlink usage status.

34. The UE of claim 25, wherein the determining a target TCI state set based on the downlink control information, the target TCI state set being used to characterize the applied channel and/or link comprises:

determining a target Transmission Configuration Indication (TCI) state group based on the downlink control information and a predefined relationship; wherein the predefined relationship is at least one TCI state group corresponding relationship with the channel and/or link predetermined by the system.

35. The UE of claim 34, wherein before the receiving the downlink control information, the operations further comprise:

36. The UE of claim 29 or 35, wherein the downlink control information is DCI signaling; and the code point indicated by the DCI signaling corresponds to the target TCI state group included in at least one TCI state group activated by the control signaling.

37. A network device comprising a memory, a transceiver, a processor; the method is characterized in that:

38. The network device of claim 37, wherein the determining a target transmission configuration indicates a TCI state set, the target TCI state set being used to characterize an applied channel and/or link, comprises:

39. The network device of claim 38, wherein the information field further comprises: the transmission point TRP indicates an information field.

40. The network device of claim 38, wherein the target TCI status group further comprises cell ID information.

41. The network device of claim 38, wherein before sending downlink control information to the UE, the operations further comprise:

42. The network device of claim 41, wherein the control signaling further comprises: indication information whether the information fields included in the activated respective TCI status groups are valid.

43. The network device of claim 41, wherein the control signaling further comprises: indication information of the information field usage indication included in each activated TCI status group.

44. The beam indicating method of claim 43, wherein the indication information of the information field usage indication is that each activated TCI status group is associated with a separate information field usage indication information, or that all activated TCI status groups are associated with the same information field usage indication information.

45. The beam indicating method of claim 44, wherein the indication information of the information field usage indication is used for indicating uplink and downlink shared status or uplink and downlink individual usage status.

46. The network device of claim 37, wherein the determining a target transmission configuration indicates a TCI state set, the target TCI state set being used to characterize an applied channel and/or link, comprises:

47. The network device of claim 46, wherein prior to receiving the downlink control information, the operations further comprise:

48. The network device of claim 41 or 47, wherein the downlink control information is DCI signaling; and the code point indicated by the DCI signaling corresponds to the target TCI state group included in at least one TCI state group activated by the control signaling.

49. A beam indicating apparatus disposed in a User Equipment (UE), comprising:

a receiving module, configured to receive downlink control information, and determine a target transmission configuration indication TCI state group based on the downlink control information, where the target TCI state group is used to characterize an applied channel and/or link;

and the first processing module is used for transmitting and receiving signals based on the beam corresponding to the target TCI state group.

50. A beam indicating apparatus, provided in a network device, comprising:

a sending module, configured to send downlink control information to a user equipment UE, where the downlink control information is used for the UE to determine a target transmission configuration indication TCI state group, and the target TCI state group is used to characterize an applied channel and/or link;

and the second processing module is used for transmitting and receiving signals based on the beam corresponding to the target TCI state group.

51. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to execute the beam indicating method of any one of claims 1 to 12 and the beam indicating method of any one of claims 13 to 24.