Beam indication method, apparatus, and storage medium

Abstract

This application provides a beam indication method, apparatus, and storage medium. The method includes receiving downlink control information; determining a target Transmission Configuration Indication (TCI) state group based on the downlink control information, wherein the target TCI state group is used to characterize the applied channel and / or link; and transmitting and receiving signals based on the beam corresponding to the target TCI state group. The beam indication method, apparatus, and storage medium provided in this application introduce channel and / or link identification or indication information into the TCI state group to determine the channel and / or link applied to the TCI state group corresponding to each code point. Then, based on the downlink control information, the corresponding beam information is indicated through the code points, making it applicable to various application scenarios and improving resource utilization.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to a beam pointing method, apparatus and storage medium. Background Technology

[0002] In NR (New Radio) systems, downlink channels include the Physical Downlink Shared Channel (PDSCH) and the Physical Downlink Control Channel (PDCCH), while uplink channels include the Physical Uplink Shared Channel (PUSCH) and the Physical Uplink Control Channel (PUCCH). For high-frequency transmission (FR2 band in NR), due to limited transmission range, uplink and downlink channels are typically beamformed before transmission to enhance coverage. The direction of the beamformed signal is determined by beam scanning of the uplink and downlink reference signals.

[0003] In existing NR protocols, different channels use different beam indication signaling, and each channel is beam-indicated independently. This means different channels may use their own different beams for transmission. However, a significant scenario in practical applications is that multiple channels use the same beam direction. For example, the PDCCH used for resource scheduling and the PDSCH used for transmitting user data may use the same beam direction; the uplink control channel PUCCH and the uplink data channel PUSCH may also use the same beam direction. When beam reciprocity exists, the uplink and downlink channels will also use the same beam direction. In this case, the existing independent beam indication method increases system complexity and signaling overhead. To overcome these problems, the NR Rel-17 protocol introduces a method that uses a single beam indication signaling to indicate multiple channel beams. This method activates a set of transmission configuration indicator (TCI) states through MAC-CE, and then uses downlink control information (DCI) to indicate one of the activated TCI states.

[0004] When uplink and downlink channels are interchangeable, the beam indicated by beam indication signaling can be used for both the uplink and downlink channels. However, when a maximum permissible exposure (MPE) problem occurs due to human obstruction, or when the terminal needs to switch uplink beams, the uplink channel will use a different beam than the downlink channel. In this case, the beam indication signaling needs to indicate the uplink and downlink beams separately. Currently, there is no solution in the technology for how to use beam indication signaling to distinguish between these different application scenarios. Summary of the Invention

[0005] To address the problems existing in the prior art, embodiments of this application provide a beam indication method, apparatus, and storage medium.

[0006] In a first aspect, embodiments of this application provide a beam indication method applied to a user equipment (UE), comprising:

[0007] Receive downlink control information, and determine a target transmission configuration indication (TCI) state group based on the downlink control information. The target TCI state group is used to characterize the applied channel and / or link.

[0008] Signal transmission and reception are performed based on the beam corresponding to the target TCI state group.

[0009] Optionally, the step of determining the target transmission configuration indication (TCI) state group based on the downlink control information, wherein the target TCI state group is used to characterize the applied channel and / or link, includes:

[0010] The target transmission configuration indication (TCI) state group is determined based on the downlink control information; wherein the target TCI state group includes at least one information field, the information field including an uplink beam indication information field, a downlink beam indication information field, an uplink / downlink shared beam indication information field, an uplink power control information field, a carrier set information field, and a channel indication information field; wherein the uplink power control information field is used to indicate the uplink power control parameters or parameter set corresponding to the TCI state of uplink transmission; the carrier set information field is used to indicate one or more carriers applied by the TCI state group; and the channel indication information field is used to indicate that the TCI state group is applied to one or more channels.

[0011] Optionally, the information field further includes a Transmission Point Reference (TRP) indication information field.

[0012] Optionally, the target TCI state group may also include cell ID information.

[0013] Optionally, before receiving downlink control information, the method further includes:

[0014] The system receives control signaling sent by a network device, the control signaling being used to activate at least one TCI state group, the activated at least one TCI state group including the target TCI state group.

[0015] Optionally, the control signaling may further include: indication information on whether the information fields included in each activated TCI state group are valid.

[0016] Optionally, the control signaling may further include: indication information indicating the purpose of the information domain included in each activated TCI state group.

[0017] Optionally, the information domain usage indication information may be that each active TCI state group is associated with an independent information domain usage indication information, or all active TCI state groups are associated with the same information domain usage indication information.

[0018] Optionally, the indication information of the information domain usage indication is used to indicate whether the uplink and downlink are used together or whether the uplink and downlink are used separately.

[0019] Optionally, the step of determining the target transmission configuration indication (TCI) state group based on the downlink control information, wherein the target TCI state group is used to characterize the applied channel and / or link, includes:

[0020] Based on the downlink control information and the predefined relationship, the target transmission configuration indication (TCI) state group is determined; wherein the predefined relationship is the correspondence between at least one TCI state group and the channel and / or link predetermined by the system.

[0021] Optionally, before receiving downlink control information, the method further includes:

[0022] The system receives control signaling sent by a network device, the control signaling being used to activate at least one TCI state group, the activated at least one TCI state group including the target TCI state group.

[0023] Optionally, the downlink control information is DCI signaling; 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.

[0024] Secondly, embodiments of this application provide a beam indication method applied to a network device, comprising:

[0025] Downlink control information is sent to the user equipment (UE), the downlink control information being used by the UE to determine the target transmission configuration indication (TCI) state group, the target TCI state group being used to characterize the applied channel and / or link;

[0026] Signal transmission and reception are performed based on the beam corresponding to the target TCI state group.

[0027] Optionally, the determination of the target transmission configuration indication TCI state group, the target TCI state group being used to characterize the applied channel and / or link, includes:

[0028] The target transmission configuration indication (TCI) state group is determined based on the downlink control information; wherein the target TCI state group includes at least one information field, the information field including an uplink beam indication information field, a downlink beam indication information field, an uplink / downlink shared beam indication information field, an uplink power control information field, a carrier set information field, and a channel indication information field; wherein the uplink power control information field is used to indicate the uplink power control parameters or parameter set corresponding to the TCI state of uplink transmission; the carrier set information field is used to indicate one or more carriers applied by the TCI state group; and the channel indication information field is used to indicate that the TCI state group is applied to one or more channels.

[0029] Optionally, the information field further includes a Transmission Point Reference (TRP) indication information field.

[0030] Optionally, the target TCI state group may also include cell ID information.

[0031] Optionally, before sending downlink control information to the user equipment (UE), the method further includes:

[0032] A control signaling is sent to the UE, the control signaling being used to activate at least one TCI state group, the activated at least one TCI state group including the target TCI state group.

[0033] Optionally, the control signaling may further include: indication information on whether the information fields included in each activated TCI state group are valid.

[0034] Optionally, the control signaling may further include: indication information indicating the purpose of the information domain included in each activated TCI state group.

[0035] Optionally, the information domain usage indication information may be that each active TCI state group is associated with an independent information domain usage indication information, or all active TCI state groups are associated with the same information domain usage indication information.

[0036] Optionally, the indication information of the information domain usage indication is used to indicate whether the uplink and downlink are used together or whether the uplink and downlink are used separately.

[0037] Optionally, the determination of the target transmission configuration indication TCI state group, the target TCI state group being used to characterize the applied channel and / or link, includes:

[0038] Based on the downlink control information and the predefined relationship, the target transmission configuration indication (TCI) state group is determined; wherein the predefined relationship is the correspondence between at least one TCI state group and the channel and / or link predetermined by the system.

[0039] Optionally, before receiving downlink control information, the method further includes:

[0040] A control signaling is sent to the UE, the control signaling being used to activate at least one TCI state group, the activated at least one TCI state group including the target TCI state group.

[0041] Optionally, the downlink control information is DCI signaling; 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.

[0042] Thirdly, embodiments of this application also provide a user equipment, including a memory, a transceiver, and a processor:

[0043] A memory for storing computer programs; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program from the memory and implementing the steps of the beam pointing method as described in the first aspect above.

[0044] Fourthly, embodiments of this application also provide a network device, including a memory, a transceiver, and a processor:

[0045] A memory for storing computer programs; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program from the memory and implementing the steps of the beam pointing method as described in the second aspect above.

[0046] Fifthly, embodiments of this application also provide a processor-readable storage medium storing a computer program for causing the processor to perform the steps of the beam pointing method described in the first or second aspect above.

[0047] The beam indication method, apparatus, and storage medium provided in this application introduce channel and / or link identification or indication information into the TCI state group to determine the channel and / or link applied to the TCI state group corresponding to each code point, and then indicate the corresponding beam information through the code point based on downlink control information, so as to be applicable to a variety of different application scenarios and improve resource utilization. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is one of the schematic flowcharts of the beam pointing method provided in the embodiments of this application;

[0050] Figure 2 This is a second schematic diagram of the beam indication method provided in the embodiments of this application;

[0051] Figure 3 This is a schematic diagram of a multi-TRP transmission scenario provided in an embodiment of this application;

[0052] Figure 4 This is a schematic diagram of the user equipment structure provided in an embodiment of this application;

[0053] Figure 5 This is a schematic diagram of the network device structure provided in an embodiment of this application;

[0054] Figure 6 This is one of the structural schematic diagrams of the beam pointing device provided in the embodiments of this application;

[0055] Figure 7 This is a second schematic diagram of the beam pointing device provided in the embodiments of this application. Detailed Implementation

[0056] In the embodiments of this application, the term "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0057] In the embodiments of this application, the term "multiple" refers to two or more, and other quantifiers are similar.

[0058] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0059] In NR systems, downlink channels include the downlink data channel PDSCH and the downlink control channel PDCCH, while uplink channels include the uplink data channel PUSCH and the uplink control channel PUCCH. For high-frequency transmission (FR2 band in NR), due to limited transmission range, uplink and downlink channels are typically beamformed before transmission to enhance coverage. The direction of the beamformed signal can be determined by beam scanning of uplink and downlink reference signals. For example, beam scanning can be performed using state information reference signals (CSI-RS) or uplink sounding reference signals (SRS) in different directions, and the direction of the reference signal with the best beam quality can be selected for uplink or downlink transmission. Once the beam direction of different channels is determined, signaling is needed to indicate the beam during channel transmission, i.e., beam indication.

[0060] In the NR Rel-15 / 16 protocol, for the PUCCH channel, the base station semi-statically configures multiple beam directions for the terminal via higher-layer signaling SpatialRelationInfo, and activates one of them via MAC-CE. For the PUSCH channel, the uplink beam selected by the base station is indirectly indicated by the SpatialRelationInfo of the SRS resource pointed to by the SRI field in the dynamic signaling DCI. For the PDCCH channel, the base station configures multiple TCI states for each CORESET via higher-layer signaling, and activates one of them via MAC-CE. For the PDSCH channel, the base station indicates a TCI state via the TCI field in the DCI signaling, representing the beam direction of the channel.

[0061] Different channels use different beam indication signaling, and each channel is beam-indicated independently. This means different channels may use their own different beams for transmission. However, a significant scenario in practical applications is multiple channels using the same beam direction. For example, the PDCCH used for resource scheduling and the PDSCH used for transmitting user data may use the same beam direction; the uplink control channel PUCCH and the uplink data channel PUSCH may also use the same beam direction. When beam reciprocity exists, uplink and downlink channels will also use the same beam direction. In this case, the current independent beam indication method increases system complexity and signaling overhead. To overcome these problems, the NR Rel-17 protocol introduces a method that uses a single beam indication signaling to indicate multiple channel beams. This method activates a set of TCI states through MAC-CE, and then uses DCI to indicate one of the activated TCI states.

[0062] When uplink and downlink channels are interchangeable, the beam indicated by the beam indication signaling can be used for both the uplink and downlink channels. When an MPE problem occurs due to human obstruction or the terminal needs to switch uplink beams, the uplink channel will use a different beam than the downlink channel. In this case, the beam indication signaling needs to indicate the uplink and downlink beams separately. When indicating multi-TRP transmission, the beam indication signaling needs to indicate the beams for different TRPs (corresponding to different links). The embodiments of this application provide solutions for the above-mentioned different application scenarios.

[0063] The technical solutions provided in this application can be applied to various systems, especially 5G systems. For example, applicable systems include Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS), Long Term Evolution (LTE), LTE Frequency Division Duplex (FDD), LTE Time Division Duplex (TDD), Long Term Evolution Advanced (LTE-A), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX), and 5G New Radio (NR). All of these systems include terminal equipment and network equipment. The systems may also include a core network component, such as Evolved Packet System (EPS) and 5G system (5GS).

[0064] The terminal device (e.g., UE) involved in the embodiments of this application can be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connectivity, or other processing devices connected to a wireless modem. The name of the terminal device may differ in different systems; for example, in a 5G system, the terminal device can be called User Equipment (UE). The wireless terminal device can communicate with one or more core networks (CNs) via a Radio Access Network (RAN). The wireless terminal device can be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device, for example, a portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile device. They exchange voice and / or data with the radio access network. Examples include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). Wireless terminal equipment can also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, or user device, but this application does not limit the terminology.

[0065] The network device involved in this application embodiment can be a base station, which may include multiple cells providing services to terminals. Depending on the specific application, a base station may also be called an access point, or a device in an access network that communicates with a wireless terminal device through one or more sectors on the air interface, or other names. The network device can be used to exchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network device can also coordinate the attribute management of the air interface. For example, the network equipment involved in the embodiments of this application can be a base transceiver station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a NodeB in a Wide-band Code Division Multiple Access (WCDMA) system, an evolved Node B (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a next generation system, a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in the embodiments of this application. In some network structures, the network equipment may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized unit and distributed unit may be geographically separated.

[0066] Figure 1 This is one of the schematic flowcharts of the beam indication method provided in the embodiments of this application. This method can be applied to a UE, such as... Figure 1 As shown, the method includes at least the following steps:

[0067] Step 100: Receive downlink control information, and determine the target transmission configuration indication (TCI) state group based on the downlink control information. The target TCI state group is used to characterize the applied channel and / or link.

[0068] The UE receives downlink control information (e.g., DCI) sent by a network device such as a gNB, and determines the target TCI state group indicated by the DCI from among N previously activated TCI state groups based on the DCI information. Where N = 1 or N > 1.

[0069] Optionally, the gNB first configures a TCI state pool for the UE, which includes multiple TCI-States. In the TCI state pool, each state can be 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; and each TCI-StateId corresponds to a beam.

[0070] The gNB can activate at least one state group in the state pool by sending an activation command to the UE. The activation command can be MAC-CE signaling. Each state group includes at least one state, and each state group can be used to characterize the applied channel and / or link. The target state group includes at least one state, and each state is indicated by a corresponding TCI-StateId. Each TCI-StateId corresponds to a beam, thus characterizing the applied channel and / or link, such as whether an uplink or downlink channel is used.

[0071] Step 101: Transmit and receive signals based on the beam corresponding to the target TCI state group.

[0072] After the UE receives the MAC-CE signaling sent by the gNB, the MAC-CE signaling is used to activate N TCI state groups. Then, the UE receives the DCI sent by the gNB, where the code point indicated by the DCI corresponds to one of the TCI state groups in the MAC-CE signaling. The UE can then transmit and receive signals based on the beam corresponding to the target TCI state group.

[0073] The beam indication method provided in this application introduces channel and / or link identification or indication information into the TCI state group to determine the channel and / or link applied to the TCI state group corresponding to each code point, and then indicates the corresponding beam information through the code point based on downlink control information, so as to be applicable to a variety of different application scenarios and improve resource utilization.

[0074] Based on the above embodiments, the step of determining the target transmission configuration indication (TCI) state group based on the downlink control information, wherein the target TCI state group is used to characterize the applied channel and / or link, can be implemented in various ways, and two implementation methods are described below.

[0075] One implementation involves determining a target Transmission Configuration Indicator (TCI) state group based on the downlink control information. The target TCI state group includes at least one information field, comprising an uplink beam indication information field, a downlink beam indication information field, an uplink / downlink shared beam indication information field, an uplink power control information field, a carrier set information field, and a channel indication information field. The uplink power control information field indicates the uplink power control parameters or parameter set corresponding to the uplink transmission TCI state. The carrier set information field indicates one or more carriers applied to the TCI state group. The channel indication information field indicates that the TCI state group is applied to one or more channels.

[0076] Optionally, the uplink power control information field included in the information field can be used to indicate the uplink power control parameters or parameter set corresponding to the TCI state of the uplink transmission.

[0077] For example, Table 1 shows that a target TCI state group includes two information fields.

[0078] Table 1

[0079]

[0080] Optionally, the information field further includes a Transmission Point Representation (TRP) indication information field. For example, another target TCI state group shown in Table 2 includes four information fields. By adding the TRP indication information field, flexible uplink and downlink beam indication and dynamic multi-TRP and single-TRP switching can be achieved.

[0081] Table 2

[0082]

[0083] Optionally, the target TCI state group may also include cell ID information to indicate which cell it is used for, such as the serving cell or other secondary cells.

[0084] As described above, the UE needs to receive control signaling (e.g., MAC-CE) sent by the gNB. The MAC-CE can be used to activate at least one TCI state group, and the activated at least one TCI state group includes the target TCI state group.

[0085] Furthermore, MAC-CE can also include indications of the validity of information fields included in each active TCI state group. For example, in Table 1, 1 bit of information can be used to indicate whether the information field exists or is active for each information field.

[0086] Furthermore, the MAC-CE can also include indications of the purpose of information fields included in each active TCI state group. For example, the "For downlink transmission only or combined uplink and downlink transmission" information field has two meanings. When only this information field exists in Table 1, an additional 1-bit indication of its purpose can be used, for example, if the purpose indication bit is '1', it means that this information field is only used for downlink transmission. When Table 1 includes not only this information field but also other information fields, such as the "For uplink transmission only" information field, the meaning of the "For downlink transmission only or combined uplink and downlink transmission" information field can be assumed to be only used for downlink transmission, and no additional indication of the purpose of the information field is needed.

[0087] Optionally, the information domain usage indication information may be that each active TCI state group is associated with an independent information domain usage indication information, or all active TCI state groups are associated with the same information domain usage indication information.

[0088] Optionally, the indication information of the information domain usage indication is used to indicate whether the uplink and downlink are used together or separately.

[0089] Another implementation method is to determine the target transmission configuration indication (TCI) state group based on the downlink control information and predefined relationships; wherein, the predefined relationships are the correspondences between at least one TCI state group and the channel and / or link predefined by the system. Specifically, the system predefines N correspondences between TCI state groups and the channel and / or link.

[0090] Similarly, the UE also needs to receive control signaling (e.g., MAC-CE) sent by the gNB. The MAC-CE can be used to activate at least one TCI state group, and the activated at least one TCI state group includes the target TCI state 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.

[0091] Table 3

[0092] Code Point Activate TCI state 000 TCI-State3 001 TCI-State9 010 TCI-State18 011 TCI-State25 100 TCI-State36 101 TCI-State7 110 TCI-State100 111 TCI-State88

[0093] The gNB sends DCI signaling to the UE, wherein 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. Specifically, the system predefines the first four code points to correspond to the transmission beam of TRP0, and the last four code points to correspond to the transmission beam of TRP1. If TRP0 sends DCI indication code point '101', then TRP1 will use the beam corresponding to TCI-State7 for data transmission; if TRP1 sends DCI indication code point '000', then TRP0 will use the beam corresponding to TCI-State3 for data transmission; if TRP1 sends DCI indication code point '110', then TRP1 will use the beam corresponding to TCI-State100 for data transmission.

[0094] Figure 2 This is a second schematic diagram of the beam indication method provided in the embodiments of this application. This method can be applied to network devices such as gNBs. Figure 2 As shown, the method includes at least the following steps:

[0095] Step 200: Send downlink control information to the user equipment (UE). The downlink control information is used by the UE to determine the target transmission configuration indication (TCI) state group. The target TCI state group is used to characterize the applied channel and / or link.

[0096] The gNB sends downlink control information (e.g., DCI) to the UE. Based on the DCI information, the UE determines the target TCI state group indicated by the DCI from among N previously activated TCI state groups. Here, N = 1 or N > 1.

[0097] Optionally, the gNB first configures a TCI state pool for the UE, which includes multiple TCI-States. In the TCI state pool, each state can be 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; and each TCI-StateId corresponds to a beam.

[0098] The gNB can activate at least one state group in the state pool by sending an activation command to the UE. The activation command can be MAC-CE signaling. Each state group includes at least one state, and each state group can be used to characterize the applied channel and / or link. The target state group includes at least one state, and each state is indicated by a corresponding TCI-StateId. Each TCI-StateId corresponds to a beam, thus characterizing the applied channel and / or link, such as whether an uplink or downlink channel is used.

[0099] Step 201: Transmit and receive signals based on the beam corresponding to the target TCI state group.

[0100] After the gNB sends MAC-CE signaling to the UE, the MAC-CE signaling is used to activate N TCI state groups, and then DCI is sent. The code point indicated by the DCI corresponds to one of the TCI state groups in the MAC-CE signaling. The UE can then transmit and receive signals based on the beam corresponding to the target TCI state group, and correspondingly, the gNB can also transmit and receive signals based on the beam corresponding to the target TCI state group.

[0101] The beam indication method provided in this application introduces channel and / or link identification or indication information into the TCI state group to determine the channel and / or link applied to the TCI state group corresponding to each code point, and then indicates the corresponding beam information through the code point based on downlink control information, so as to be applicable to a variety of different application scenarios and improve resource utilization.

[0102] Based on the above embodiments, the step of determining the target transmission configuration indication (TCI) state group based on the downlink control information, wherein the target TCI state group is used to characterize the applied channel and / or link, can be implemented in various ways, and two implementation methods are described below.

[0103] One implementation involves determining a target Transmission Configuration Indicator (TCI) state group based on the downlink control information. The target TCI state group includes at least one information field, comprising an uplink beam indication information field, a downlink beam indication information field, an uplink / downlink shared beam indication information field, an uplink power control information field, a carrier set information field, and a channel indication information field. The uplink power control information field indicates the uplink power control parameters or parameter set corresponding to the uplink transmission TCI state. The carrier set information field indicates one or more carriers applied to the TCI state group. The channel indication information field indicates that the TCI state group is applied to one or more channels.

[0104] Optionally, the uplink power control information field included in the information field can be used to indicate the uplink power control parameters or parameter set corresponding to the TCI state of the uplink transmission, as shown in Table 1 above.

[0105] Optionally, the information field further includes a Transmission Point Reference (TRP) indication information field, as shown in Table 2 above.

[0106] Optionally, the target TCI state group may also include cell ID information to indicate which cell it is used for, such as the serving cell or other secondary cells.

[0107] As described above, before the gNB sends downlink control information to the UE, the method further includes: the gNB sending control signaling (MAC-CE) to the UE, the control signaling being used to activate at least one TCI state group, the activated at least one TCI state group including the target TCI state group.

[0108] Furthermore, MAC-CE can also include indications of the validity of information fields included in each active TCI state group. For example, in Table 1, 1 bit of information can be used to indicate whether the information field exists or is active for each information field.

[0109] Furthermore, the MAC-CE may also include indication information indicating the purpose of the information domains included in each activated TCI state group.

[0110] Optionally, the information domain usage indication information may be that each active TCI state group is associated with an independent information domain usage indication information, or all active TCI state groups are associated with the same information domain usage indication information.

[0111] Optionally, the indication information of the information domain usage indication is used to indicate whether the uplink and downlink are used together or separately.

[0112] Another implementation method is to determine the target transmission configuration indication (TCI) state group based on the downlink control information and predefined relationships; wherein, the predefined relationships are the correspondences between at least one TCI state group and the channel and / or link predefined by the system. Specifically, the system predefines N correspondences between TCI state groups and the channel and / or link.

[0113] Similarly, the gNB needs to send control signaling (e.g., MAC-CE) to the UE. The MAC-CE can be used to activate at least one TCI state group, which includes the target TCI state group. Further, the gNB sends DCI signaling to the UE, the code point indicated by the DCI signaling corresponding to the target TCI state group included in the at least one TCI state group activated by the control signaling. See the description in Table 3 above for details.

[0114] The method provided in this application introduces channel and / or link identification or indication information into the signaling that activates the TCI state, determines the channel and / or link applied to the TCI state group corresponding to each code point, and then the downlink control information indicates the corresponding beam information through the code point, so as to be applicable to a variety of different application scenarios and improve resource utilization.

[0115] The following examples will further illustrate the implementation method one described above.

[0116] Example 1:

[0117] Suppose the base station configures a TCI state pool containing S = 128 TCI-States for the terminal. Each state is indicated by a corresponding TCI-StateId. For example, the first TCI state is indicated by TCI-State0, the second TCI state by TCI-State1, and so on.

[0118] The base station sends MAC-CE signaling to the terminal, which is used to activate N=8 state groups. Each state group contains the following basic information fields:

[0119]

[0120] Additionally, 1 bit is used to indicate the existence or validity of each information field. Furthermore, if only the first information field exists, an extra 1 bit is used to indicate its purpose, distinguishing whether the first information field is used only for downlink transmission or for combined uplink and downlink transmission.

[0121] For example, for state group 1, its corresponding information field is represented as:

[0122]

[0123] At the same time, the bits corresponding to each information field are set to '1', indicating that both information fields are active. Thus, this state group indicates that downlink transmission uses the beam corresponding to TCI-State0, and uplink transmission uses the beam corresponding to TCI-State6.

[0124] For state group 2, its corresponding information field is represented as follows:

[0125]

[0126]

[0127] The first information field has a bit of '0' and the second information field has a bit of '1', indicating that only the second information field is active. Thus, this state group indicates that uplink transmission uses the beam corresponding to TCI-State3.

[0128] For state group 3, its corresponding information field is represented as follows:

[0129]

[0130] The first information field has a bit set to '1', and the second information field has a bit set to '0', indicating that only the first information field is active. Simultaneously, the information field usage indicator bit is set to '1', indicating that this information field is used only for downlink transmission. Thus, this state group indicates that only downlink transmission using the beam corresponding to TCI-State5 is employed.

[0131] The base station sends DCI signaling to the terminal, which includes a 3-bit TCI field. Each set of values ​​for these 3 bits corresponds to a code point, and this code point corresponds to a state group. For example, if the TCI field value of the DCI is '010', then the code point corresponds to state group 3. Based on the information in state group 3, the base station instructs the terminal to use the TCI-State 5 beam for downlink transmission.

[0132] Example 2:

[0133] Assume the base station configures a TCI state pool containing S = 128 TCI-States for the terminal. Each state is indicated by a corresponding TCI-StateId. For example, the first TCI state is indicated by TCI-State0, the second by TCI-State1, and so on. In a multi-TRP scenario, multiple TRPs can transmit data to the same terminal. Figure 3 This is a schematic diagram of a multi-TRP transmission scenario provided in an embodiment of this application, such as... Figure 3 As shown below. The system is assumed to support two TRP transfers.

[0134] The base station sends MAC-CE signaling to the terminal, which is used to activate N=8 state groups. Each state group contains the following basic information fields:

[0135]

[0136]

[0137] Additionally, 1 bit is used to indicate the existence or validity of each information field. Furthermore, if only the first and / or third information fields exist, an additional 1 bit is used to indicate the purpose of each field, distinguishing whether it is used solely for downlink transmission or for combined uplink and downlink transmission.

[0138] For example, for state group 1, its corresponding information field is represented as:

[0139]

[0140] The bits corresponding to the four information fields are set to '1', '1', '0', and '0' respectively, indicating that the first two information fields are active and the last two are inactive. In this way, this state group 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.

[0141] For state group 2, its corresponding information field is represented as follows:

[0142]

[0143] The bits corresponding to the four information fields are set to '1', '0', '0', and '1' respectively, indicating that the first and fourth information fields are active, while the middle two information fields are inactive. Furthermore, the information field purpose indicator for the first information field is set to '1', indicating that this information field is used for combined uplink and downlink transmission at TRP0. Thus, this state 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.

[0144] The base station sends DCI signaling to the terminal. This DCI signaling includes a 3-bit TCI field. Each set of values ​​for these 3 bits corresponds to a code point, and this code point corresponds to a state group. For example, if the TCI field value is '001', then the code point corresponds to state group 2. Based on the information in state group 2, the beam indicated by TCI-State 17 is used for uplink and downlink transmission between TRP0 and the terminal, and the beam indicated by TCI-State 30 is used for uplink transmission between TRP1 and the terminal.

[0145] Example 3:

[0146] Suppose the base station configures a TCI state pool containing S = 128 TCI-States for the terminal. Each state is indicated by a corresponding TCI-StateId. For example, the first TCI state is indicated by TCI-State0, the second TCI state by TCI-State1, and so on.

[0147] The base station sends MAC-CE signaling to the terminal. This MAC-CE signaling activates N=8 states (which can be understood as activating 8 state groups, with each state group containing only one state). For each TCI state indicating uplink transmission, its corresponding power control parameters are configured. For example, MAC-CE activates the following 8 TCI states: TCI-State9 indicates uplink and downlink transmission beams, TCI-State7 indicates the uplink transmission beam, and the remaining TCI states indicate the downlink transmission beam. Therefore, uplink power control parameters need to be configured for TCI-State9 and TCI-State7.

[0148]

[0149]

[0150] Furthermore, the MAC-CE can also indicate that the TCI states corresponding to the eight code points shown can be used for the carrier set {CC1, CC2, CC3}, where CC1 represents carrier 1, CC2 represents carrier 2, and CC3 represents carrier 3. Alternatively,

[0151] The TCI states corresponding to the eight codebooks indicated by the MAC-CE can be used for carrier set 1. Carrier set 1 includes carriers {CC1, CC2, CC3}.

[0152] Furthermore, the MAC-CE can also indicate that the TCI states corresponding to the eight code points can be used for CORESET group 1 or CORESET group 2. CORESET group 1 includes {CORESET0, CORESET1, CORESET2}, and CORESET group 2 includes {CORESET3, CORESET4}. The CORESET groups are configured by RRC. Specifically, the channel indication information field can use 2 bits, with each bit corresponding to CORESET group 1 and CORESET group 2 respectively. A field of '0,1' indicates that the TCI state is used for CORESET group 2, and a field of '1,0' indicates that the TCI state is used for CORESET group 1.

[0153] Similarly, the channel indication information field can also use 5 bits, with each bit corresponding to a CORESET, indicating the TCI state used for the CORESET.

[0154] The base station sends DCI signaling to the terminal. This DCI signaling includes a 3-bit TCI field. Each set of values ​​for these 3 bits corresponds to a code point, which in turn corresponds to a state. For example, if the TCI field value is '001', then the code point corresponds to TCI-State 9. In this case, the downlink transmission beam uses the beam corresponding to TCI-State 9, and the uplink transmission beam uses the beam corresponding to TCI-State 9 and performs uplink transmission using the corresponding uplink power control parameters.

[0155] Alternatively, the uplink power control parameters can be configured separately for different uplink channels. As shown in the table below, some parameters in the uplink power control parameters are configured for the PUSCH channel, PUCCH channel, and SRS, respectively.

[0156]

[0157]

[0158] Furthermore, the MAC-CE can also indicate that the TCI states corresponding to the eight code points shown can be used for the carrier set {CC1, CC2, CC3}, where CC1 represents carrier 1, CC2 represents carrier 2, and CC3 represents carrier 3. Alternatively,

[0159] The TCI states corresponding to the eight codebooks indicated by the MAC-CE can be used for carrier set 1. Carrier set 1 includes carriers {CC1, CC2, CC3}.

[0160] Furthermore, the MAC-CE can also indicate that the TCI states corresponding to the eight code points can be used for CORESET group 1 or CORESET group 2. CORESET group 1 includes {CORESET0, CORESET1, CORESET2}, and CORESET group 2 includes {CORESET3, CORESET4}. The CORESET groups are configured by RRC. Specifically, the channel indication information field can use 2 bits, with each bit corresponding to CORESET group 1 and CORESET group 2 respectively. A field of '0,1' indicates that the TCI state is used for CORESET group 2, and a field of '1,0' indicates that the TCI state is used for CORESET group 1.

[0161] Similarly, the channel indication information field can also use 5 bits, with each bit corresponding to a CORESET, indicating the TCI state used for the CORESET.

[0162] Example 4:

[0163] Suppose the base station configures a TCI state pool containing S = 128 TCI-States for the terminal. Each state is indicated by a corresponding TCI-StateId. For example, the first TCI state is indicated by TCI-State0, the second TCI state by TCI-State1, and so on.

[0164] The base station sends MAC-CE signaling to the terminal, which is used to activate N=8 state groups. Each state group contains the following information fields:

[0165]

[0166] In this way, a 1-bit information field is used to indicate the purpose of each state group, distinguishing whether the state is a shared state for uplink and downlink or a state used separately for uplink and downlink.

[0167] For example, for state group 1, its corresponding information field is represented as:

[0168]

[0169] Thus, based on the state '1' of the third field, this state group indicates that downlink uses the beam corresponding to TCI-State0 for transmission, and uplink uses the beam corresponding to TCI-State6 for transmission.

[0170] For state group 3, its corresponding information field is represented as follows:

[0171]

[0172] Thus, according to the state '0' of the third field, this state group indicates that both downlink and uplink transmission use the beam corresponding to TCI-State5. If the state of the third field is '1', it indicates that only downlink transmission uses the beam corresponding to TCI-State5.

[0173] Example 5:

[0174] Suppose the base station configures a TCI state pool containing S = 128 TCI-States for the terminal. Each state is indicated by a corresponding TCI-StateId. For example, the first TCI state is indicated by TCI-State0, the second TCI state by TCI-State1, and so on.

[0175] The base station sends MAC-CE signaling to the terminal, which is used to activate N=8 state groups. Each state group contains the following information fields:

[0176] Used for downlink transmission For uplink transmission only TCI-StateId TCI-StateId

[0177] Simultaneously, this MAC-CE signaling includes a separate information field. This field indicates whether all active state groups (N=8) belong to a shared uplink / downlink state or a separate uplink / downlink state. As follows:

[0178] Uplink and downlink share the same '0' or use '1' separately for each. 1 / 0

[0179] For example, when this independent information field is configured to 0, it means that all active N=8 state groups are shared uplink and downlink states. In this case, only the first field of all 8 active state groups is active. For example:

[0180] For state group 1, its corresponding information field is represented as follows:

[0181] Used for downlink transmission For uplink transmission only TCI-State0 ——

[0182] This indicates that this state group means that both uplink and downlink use the beam corresponding to TCI-State0 for transmission.

[0183] For state group 3, its corresponding information field is represented as follows:

[0184] Used for downlink transmission For uplink transmission only TCI-State5 ——

[0185] This indicates that this state group means that both uplink and downlink use the beam corresponding to TCI-State5 for transmission.

[0186] When this independent information field is configured to 1, it indicates that all active N=8 state groups use uplink and downlink states separately. In this case, both fields are effective for all 8 active state groups. For example,

[0187] For state group 1, its corresponding information field is represented as follows:

[0188] Used for downlink transmission For uplink transmission only TCI-State0 TCI-State6

[0189] This indicates that the downlink uses the beam corresponding to TCI-State0 for transmission, and the uplink uses the beam corresponding to TCI-State6 for transmission.

[0190] The same applies to other state groups.

[0191] Figure 4 This is a schematic diagram of the user equipment structure provided in the embodiments of this application, such as... Figure 4 As shown, the user equipment 400 includes a memory 401, a transceiver 403, and a processor 401, wherein the processor 401 and the memory 402 can also be physically arranged separately.

[0192] The memory 402 is used to store computer programs; the transceiver 403 is used to send and receive data under the control of the processor 401.

[0193] Specifically, transceiver 403 is used to receive and send data under the control of processor 401.

[0194] Among them, Figure 4 In this context, bus system 404 may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 401 and memory represented by memory 402 together. Bus system 404 may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. Transceiver 403 may be multiple components, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. For different user equipment, user interface 405 may also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0195] The processor 401 is responsible for managing the bus system and general processing, and the memory 402 can store the data used by the processor 401 when performing operations.

[0196] Optionally, the processor 401 can be a CPU (Central Processing Unit), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or CPLD (Complex Programmable Logic Device), and the processor can also adopt a multi-core architecture.

[0197] The processor 401 executes any of the methods described in the embodiments of this application according to the obtained executable instructions by calling the computer program stored in the memory 402. For example:

[0198] Receive downlink control information, and determine a target transmission configuration indication (TCI) state group based on the downlink control information. The target TCI state group is used to characterize the applied channel and / or link.

[0199] Signal transmission and reception are performed based on the beam corresponding to the target TCI state group.

[0200] Optionally, the step of determining the target transmission configuration indication (TCI) state group based on the downlink control information, wherein the target TCI state group is used to characterize the applied channel and / or link, includes:

[0201] The target transmission configuration indication (TCI) state group is determined based on the downlink control information; wherein the target TCI state group includes at least one information field, the information field including an uplink beam indication information field, a downlink beam indication information field, an uplink / downlink shared beam indication information field, an uplink power control information field, a carrier set information field, and a channel indication information field; wherein the uplink power control information field is used to indicate the uplink power control parameters or parameter set corresponding to the TCI state of uplink transmission; the carrier set information field is used to indicate one or more carriers applied by the TCI state group; and the channel indication information field is used to indicate that the TCI state group is applied to one or more channels.

[0202] Optionally, the information field further includes a Transmission Point Reference (TRP) indication information field.

[0203] Optionally, the target TCI state group may also include cell ID information.

[0204] Optionally, before receiving downlink control information, the operation further includes:

[0205] The system receives control signaling sent by a network device, the control signaling being used to activate at least one TCI state group, the activated at least one TCI state group including the target TCI state group.

[0206] Optionally, the control signaling may further include: indication information on whether the information fields included in each activated TCI state group are valid.

[0207] Optionally, the control signaling may further include: indication information indicating the purpose of the information domain included in each activated TCI state group.

[0208] Optionally, the information domain usage indication information may be that each active TCI state group is associated with an independent information domain usage indication information, or all active TCI state groups are associated with the same information domain usage indication information.

[0209] Optionally, the indication information of the information domain usage indication is used to indicate a shared uplink / downlink state or a separate uplink / downlink state. Optionally, the step of determining the target transmission configuration indication (TCI) state group based on the downlink control information, wherein the target TCI state group is used to characterize the applied channel and / or link, includes:

[0210] Based on the downlink control information and the predefined relationship, the target transmission configuration indication (TCI) state group is determined; wherein the predefined relationship is the correspondence between at least one TCI state group and the channel and / or link predetermined by the system.

[0211] Optionally, before receiving downlink control information, the operation further includes:

[0212] The system receives control signaling sent by a network device, the control signaling being used to activate at least one TCI state group, the activated at least one TCI state group including the target TCI state group.

[0213] Optionally, the downlink control information is DCI signaling; 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.

[0214] It should be noted that the apparatus provided in this embodiment of the invention can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0215] The user equipment provided in this application introduces channel and / or link identification or indication information into the TCI state group to determine the channel and / or link applied to the TCI state group corresponding to each code point, and then indicates the corresponding beam information through the code point based on downlink control information, so as to be applicable to a variety of different application scenarios and improve resource utilization.

[0216] Figure 5 This is a schematic diagram of the network device structure provided in the embodiments of this application, such as... Figure 5 As shown, the network device 500 includes a memory 502, a transceiver 503, and a processor 501; wherein the processor 501 and the memory 502 can also be physically arranged separately.

[0217] The memory 502 is used to store computer programs; the transceiver 503 is used to send and receive data under the control of the processor 501.

[0218] Specifically, in Figure 5 In this configuration, bus system 504 may include any number of interconnected buses and bridges, specifically linking various circuits together, represented by one or more processors (represented by processor 501) and memory (represented by memory 502). Bus system 504 may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. A bus interface provides an interface. Transceiver 503 may be multiple elements, including transmitters and receivers, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical fibers, etc. Processor 501 is responsible for managing the bus system and general processing, and memory 502 may store data used by processor 501 during operation.

[0219] The processor 501 can 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 can also adopt a multi-core architecture.

[0220] The processor 501 executes any of the methods described in the embodiments of this application according to the obtained executable instructions by calling the computer program stored in the memory 502. For example:

[0221] Downlink control information is sent to the user equipment (UE), the downlink control information being used by the UE to determine the target transmission configuration indication (TCI) state group, the target TCI state group being used to characterize the applied channel and / or link;

[0222] Signal transmission and reception are performed based on the beam corresponding to the target TCI state group.

[0223] Optionally, the determination of the target transmission configuration indication TCI state group, the target TCI state group being used to characterize the applied channel and / or link, includes:

[0224] The target transmission configuration indication (TCI) state group is determined based on the downlink control information; wherein the target TCI state group includes at least one information field, the information field including an uplink beam indication information field, a downlink beam indication information field, an uplink / downlink shared beam indication information field, an uplink power control information field, a carrier set information field, and a channel indication information field; wherein the uplink power control information field is used to indicate the uplink power control parameters or parameter set corresponding to the TCI state of uplink transmission; the carrier set information field is used to indicate one or more carriers applied by the TCI state group; and the channel indication information field is used to indicate that the TCI state group is applied to one or more channels.

[0225] Optionally, the information field further includes a Transmission Point Reference (TRP) indication information field.

[0226] Optionally, the target TCI state group may also include cell ID information.

[0227] Optionally, before sending downlink control information to the user equipment (UE), the operation further includes:

[0228] A control signaling is sent to the UE, the control signaling being used to activate at least one TCI state group, the activated at least one TCI state group including the target TCI state group.

[0229] Optionally, the control signaling may further include: indication information on whether the information fields included in each activated TCI state group are valid.

[0230] Optionally, the control signaling may further include: indication information indicating the purpose of the information domain included in each activated TCI state group.

[0231] Optionally, the information domain usage indication information may be that each active TCI state group is associated with an independent information domain usage indication information, or all active TCI state groups are associated with the same information domain usage indication information.

[0232] Optionally, the indication information of the information domain usage indication is used to indicate whether the uplink and downlink are used together or separately.

[0233] Optionally, the determination of the target transmission configuration indication TCI state group, the target TCI state group being used to characterize the applied channel and / or link, includes:

[0234] Based on the downlink control information and the predefined relationship, the target transmission configuration indication (TCI) state group is determined; wherein the predefined relationship is the correspondence between at least one TCI state group and the channel and / or link predetermined by the system.

[0235] Optionally, before receiving downlink control information, the operation further includes:

[0236] A control signaling is sent to the UE, the control signaling being used to activate at least one TCI state group, the activated at least one TCI state group including the target TCI state group.

[0237] Optionally, the downlink control information is DCI signaling; 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.

[0238] It should be noted that the apparatus provided in this embodiment of the invention can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0239] Figure 6 This is one of the structural schematic diagrams of the beam pointing device provided in the embodiments of this application, such as... Figure 6 As shown, this device can be applied in a user equipment (UE), and the device includes:

[0240] The receiving module 601 is configured to receive downlink control information and determine a target transmission configuration indication (TCI) state group based on the downlink control information, wherein the target TCI state group is used to characterize the applied channel and / or link.

[0241] The first processing module 602 is used to transmit and receive signals based on the beam corresponding to the target TCI state group.

[0242] Optionally, the receiving module 601 is specifically configured to determine a target Transmission Configuration Indication (TCI) state group based on the downlink control information; wherein the target TCI state group includes at least one information field, the information field including an uplink beam indication information field, a downlink beam indication information field, an uplink / downlink shared beam indication information field, an uplink power control information field, a carrier set information field, and a channel indication information field; wherein the uplink power control information field is used to indicate the uplink power control parameters or parameter set corresponding to the TCI state of uplink transmission; the carrier set information field is used to indicate one or more carriers applied to the TCI state group; and the channel indication information field is used to indicate that the TCI state group is applied to one or more channels.

[0243] Optionally, the information field further includes a Transmission Point Reference (TRP) indication information field.

[0244] Optionally, the target TCI state group may also include cell ID information.

[0245] Optionally, before receiving the downlink control information, the receiving module 901 is further configured to:

[0246] The system receives control signaling sent by a network device, the control signaling being used to activate at least one TCI state group, the activated at least one TCI state group including the target TCI state group.

[0247] Optionally, the control signaling may further include: indication information on whether the information fields included in each activated TCI state group are valid.

[0248] Optionally, the control signaling may further include: indication information indicating the purpose of the information domain included in each activated TCI state group.

[0249] Optionally, the information domain usage indication information may be that each active TCI state group is associated with an independent information domain usage indication information, or all active TCI state groups are associated with the same information domain usage indication information.

[0250] Optionally, the indication information of the information domain usage indication is used to indicate whether the uplink and downlink are used together or separately.

[0251] Optionally, the receiving module 601 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 a correspondence between at least one TCI state group and a channel and / or link predetermined by the system.

[0252] Optionally, before receiving downlink control information, the operation further includes:

[0253] The system receives control signaling sent by a network device, the control signaling being used to activate at least one TCI state group, the activated at least one TCI state group including the target TCI state group.

[0254] Optionally, the downlink control information is DCI signaling; 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.

[0255] Figure 7 This is a second schematic diagram of the beam pointing device structure provided in the embodiments of this application, as shown below. Figure 7 As shown, this device can be applied in a gNB (gNetwork NodeB) network device, and the device includes:

[0256] The transmitting module 701 is used to transmit downlink control information to the user equipment (UE), wherein the downlink control information is used by the UE to determine the target transmission configuration indication (TCI) state group, and the target TCI state group is used to characterize the applied channel and / or link.

[0257] The second processing module 702 is used to transmit and receive signals based on the beam corresponding to the target TCI state group.

[0258] Optionally, the transmitting module 701 is specifically configured to determine a target transmission configuration indication (TCI) state group based on the downlink control information; wherein the target TCI state group includes at least one information field, the information field including an uplink beam indication information field, a downlink beam indication information field, an uplink / downlink shared beam indication information field, an uplink power control information field, a carrier set information field, and a channel indication information field; wherein the uplink power control information field is used to indicate the uplink power control parameters or parameter set corresponding to the TCI state of uplink transmission; the carrier set information field is used to indicate one or more carriers applied to the TCI state group; and the channel indication information field is used to indicate that the TCI state group is applied to one or more channels.

[0259] Optionally, the information field further includes a Transmission Point Reference (TRP) indication information field.

[0260] Optionally, the target TCI state group may also include cell ID information.

[0261] Optionally, the sending module 701 is further configured to send control signaling to the UE, the control signaling being used to activate at least one TCI state group, wherein the activated at least one TCI state group includes the target TCI state group.

[0262] Optionally, the control signaling may further include: indication information on whether the information fields included in each activated TCI state group are valid.

[0263] Optionally, the control signaling may further include: indication information indicating the purpose of the information domain included in each activated TCI state group.

[0264] Optionally, the information domain usage indication information may be that each active TCI state group is associated with an independent information domain usage indication information, or all active TCI state groups are associated with the same information domain usage indication information.

[0265] Optionally, the indication information of the information domain usage indication is used to indicate whether the uplink and downlink are used together or separately.

[0266] 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 a correspondence between at least one TCI state group and a channel and / or link predetermined by the system.

[0267] Optionally, the sending module 701 is further configured to send control signaling to the UE, the control signaling being used to activate at least one TCI state group, wherein the activated at least one TCI state group includes the target TCI state group.

[0268] Optionally, the downlink control information is DCI signaling; 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.

[0269] It should be noted that the apparatus provided in this embodiment of the invention can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0270] It should be noted that the division of units in the embodiments of this application is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0271] If the integrated unit is implemented as 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 this application, in essence, 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. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0272] On the other hand, embodiments of this application also provide a processor-readable storage medium storing a computer program for causing the processor to execute the methods provided in the above embodiments, including:

[0273] Receive downlink control information, and determine a target transmission configuration indication (TCI) state group based on the downlink control information. The target TCI state group is used to characterize the applied channel and / or link.

[0274] Signal transmission and reception are performed based on the beam corresponding to the target TCI state group.

[0275] On the other hand, embodiments of this application also provide a processor-readable storage medium storing a computer program for causing the processor to execute the methods provided in the above embodiments, including:

[0276] Downlink control information is sent to the user equipment (UE), the downlink control information being used by the UE to determine the target transmission configuration indication (TCI) state group, the target TCI state group being used to characterize the applied channel and / or link;

[0277] Signal transmission and reception are performed based on the beam corresponding to the target TCI state group.

[0278] The processor-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), optical memory (e.g., CD, DVD, BD, HVD), and semiconductor memory (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)).

[0279] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take 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) containing computer-usable program code.

[0280] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, 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, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0281] 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 particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0282] These processors can execute instructions that can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable device for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0283] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A beam indication method, applied to a user equipment (UE), characterized in that, include: Receive downlink control information and determine the target transmission configuration indication (TCI) status group based on the downlink control information; Based on the beam corresponding to the target TCI state group, signals are transmitted and received on the channel and / or link to which the target TCI state group is applied. The target TCI state group has at least one information field, which includes at least one of the following: uplink beam indication information field, downlink beam indication information field, uplink / downlink shared beam indication information field, carrier set information field, and channel indication information field; wherein the carrier set information field is used to indicate one or more carriers applied to the TCI state group; and the channel indication information field is used to indicate that the TCI state group is applied to one or more channels.

2. The beam pointing method according to claim 1, characterized in that, The information field also includes: a Transmission Point Reference (TRP) indication information field.

3. The beam pointing method according to claim 1, characterized in that, The downlink control information includes cell ID information.

4. The beam pointing method according to claim 1, characterized in that, Before receiving downlink control information, the method further includes: The system receives control signaling sent by a network device, the control signaling being used to activate at least one TCI state group, the activated at least one TCI state group including the target TCI state group.

5. The beam pointing method according to claim 4, characterized in that, The control signaling also includes: indication information on whether the information fields included in each activated TCI state group are valid.

6. The beam pointing method according to claim 4, characterized in that, The control signaling also includes: indication information indicating the purpose of the information domain included in each activated TCI state group.

7. The beam indication method according to claim 6, characterized in that, The information domain usage indication is either associated with a separate information domain usage indication for each active TCI state group, or associated with the same information domain usage indication for all active TCI state groups.

8. The beam indication method according to claim 7, characterized in that, The indication information of the information domain usage indicator is used to indicate whether the uplink and downlink are used together or separately.

9. The beam indication method according to claim 4, characterized in that, The downlink control information is DCI signaling; 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.

10. A beam pointing method, applied to network equipment, characterized in that, include: Send downlink control information to the user equipment (UE), the downlink control information being used to determine the target transmission configuration indication (TCI) state group; Based on the beam corresponding to the target TCI state group, signals are transmitted and received on the channel and / or link to which the target TCI state group is applied. The target TCI state group has at least one information field, which includes at least one of the following: uplink beam indication information field, downlink beam indication information field, uplink / downlink shared beam indication information field, carrier set information field, and channel indication information field; wherein the carrier set information field is used to indicate one or more carriers applied to the TCI state group; and the channel indication information field is used to indicate that the TCI state group is applied to one or more channels.

11. The beam pointing method according to claim 10, characterized in that, The information field also includes: a Transmission Point Reference (TRP) indication information field.

12. The beam pointing method according to claim 10, characterized in that, The downlink control information includes cell ID information.

13. The beam pointing method according to claim 10, characterized in that, Before sending downlink control information to the user equipment (UE), the method further includes: A control signaling is sent to the UE, the control signaling being used to activate at least one TCI state group, the activated at least one TCI state group including the target TCI state group.

14. The beam pointing method according to claim 13, characterized in that, The control signaling also includes: indication information on whether the information fields included in each activated TCI state group are valid.

15. The beam pointing method according to claim 13, characterized in that, The control signaling also includes: indication information indicating the purpose of the information domain included in each activated TCI state group.

16. The beam pointing method according to claim 15, characterized in that, The information domain usage indication is either associated with a separate information domain usage indication for each active TCI state group, or associated with the same information domain usage indication for all active TCI state groups.

17. The beam pointing method according to claim 16, characterized in that, The indication information of the information domain usage indicator is used to indicate whether the uplink and downlink are used together or separately.

18. The beam indication method according to claim 13, characterized in that, The downlink control information is DCI signaling; 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.

19. A user equipment, comprising a memory, a transceiver, and a processor; characterized in that: A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations: Receive downlink control information and determine the target transmission configuration indication (TCI) status group based on the downlink control information; Based on the beam corresponding to the target TCI state group, signals are transmitted and received on the channel and / or link to which the target TCI state group is applied. The target TCI state group has at least one information field, which includes at least one of the following: uplink beam indication information field, downlink beam indication information field, uplink / downlink shared beam indication information field, carrier set information field, and channel indication information field; wherein the carrier set information field is used to indicate one or more carriers applied to the TCI state group; and the channel indication information field is used to indicate that the TCI state group is applied to one or more channels.

20. The user equipment according to claim 19, characterized in that, The information field also includes: a Transmission Point Reference (TRP) indication information field.

21. The user equipment according to claim 19, characterized in that, The downlink control information includes cell ID information.

22. The user equipment according to claim 19, characterized in that, Before receiving downlink control information, the operation further includes: The system receives control signaling sent by a network device, the control signaling being used to activate at least one TCI state group, the activated at least one TCI state group including the target TCI state group.

23. The user equipment according to claim 22, characterized in that, The control signaling also includes: indication information on whether the information fields included in each activated TCI state group are valid.

24. The user equipment according to claim 22, characterized in that, The control signaling also includes: indication information indicating the purpose of the information domain included in each activated TCI state group.

25. The user equipment according to claim 24, characterized in that, The information domain usage indication is either associated with a separate information domain usage indication for each active TCI state group, or associated with the same information domain usage indication for all active TCI state groups.

26. The user equipment according to claim 25, characterized in that, The indication information of the information domain usage indicator is used to indicate whether the uplink and downlink are used together or separately.

27. The user equipment according to claim 22, characterized in that, The downlink control information is DCI signaling; 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.

28. A network device, comprising a memory, a transceiver, and a processor; characterized in that: A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations: Send downlink control information to the user equipment (UE), the downlink control information being used to determine the target transmission configuration indication (TCI) state group; Based on the beam corresponding to the target TCI state group, signals are transmitted and received on the channel and / or link to which the target TCI state group is applied. The target TCI state group has at least one information field, which includes at least one of the following: uplink beam indication information field, downlink beam indication information field, uplink / downlink shared beam indication information field, carrier set information field, and channel indication information field; wherein the carrier set information field is used to indicate one or more carriers applied to the TCI state group; and the channel indication information field is used to indicate that the TCI state group is applied to one or more channels.

29. The network device according to claim 28, characterized in that, The information field also includes: a Transmission Point Reference (TRP) indication information field.

30. The network device according to claim 28, characterized in that, The downlink control information includes cell ID information.

31. The network device according to claim 28, characterized in that, Before sending downlink control information to the user equipment (UE), the operation further includes: A control signaling is sent to the UE, the control signaling being used to activate at least one TCI state group, the activated at least one TCI state group including the target TCI state group.

32. The network device according to claim 31, characterized in that, The control signaling also includes: indication information on whether the information fields included in each activated TCI state group are valid.

33. The network device according to claim 31, characterized in that, The control signaling also includes: indication information indicating the purpose of the information domain included in each activated TCI state group.

34. The network device according to claim 33, characterized in that, The information domain usage indication is either associated with a separate information domain usage indication for each active TCI state group, or associated with the same information domain usage indication for all active TCI state groups.

35. The network device according to claim 34, characterized in that, The indication information of the information domain usage indicator is used to indicate whether the uplink and downlink are used together or separately.

36. The network device according to claim 31, characterized in that, The downlink control information is DCI signaling; 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 beam pointing device, disposed in a user equipment (UE), characterized in that, include: The receiving module is used to receive downlink control information and determine the target transmission configuration indication (TCI) status group based on the downlink control information. The first processing module is used to transmit and receive signals on the channel and / or link to which the target TCI state group is applied, based on the beam corresponding to the target TCI state group. The target TCI state group has at least one information field, which includes at least one of the following: uplink beam indication information field, downlink beam indication information field, uplink / downlink shared beam indication information field, carrier set information field, and channel indication information field; wherein the carrier set information field is used to indicate one or more carriers applied to the TCI state group; and the channel indication information field is used to indicate that the TCI state group is applied to one or more channels.

38. A beam pointing device, disposed in a network device, characterized in that, include: The transmitting module is used to send downlink control information to the user equipment (UE), wherein the downlink control information is used to determine the target transmission configuration indication (TCI) status group. The second processing module is used to transmit and receive signals on the channel and / or link to which the target TCI state group is applied, based on the beam corresponding to the target TCI state group. The target TCI state group has at least one information field, which includes at least one of the following: uplink beam indication information field, downlink beam indication information field, uplink / downlink shared beam indication information field, carrier set information field, and channel indication information field; wherein the carrier set information field is used to indicate one or more carriers applied to the TCI state group; and the channel indication information field is used to indicate that the TCI state group is applied to one or more channels.

39. A processor-readable storage medium, characterized in that, The processor-readable storage medium stores a computer program for causing the processor to perform the beam pointing method according to any one of claims 1 to 9, or the beam pointing method according to any one of claims 10 to 18.

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