Applying TCI states in transmit and receive

Abstract

[0003] Embodiments of the present disclosure relate to a method, an apparatus, and a computer-readable storage medium for applying a transmission configuration indicator (TCI) state in transmission and reception. The apparatus receives an indication related to at least one TCI state among a plurality of TCI states including a first TCI state and a second TCI state. The apparatus determines whether at least one control resource set (CORESET) is associated with a single frequency network (SFN) mode and / or a repetition mode. Then, the apparatus monitors the at least one CORESET based on the first and / or second TCI states in response to the association of the at least one CORESET with the SFN and / or the repetition mode.

Description

[Technical Field]

[0001] Various exemplary embodiments of the present disclosure relate generally to the field of telecommunications, and more particularly to methods, apparatus, and computer-readable storage media for application of transmission configuration indicator (TCI) states in transmission and reception. [Background technology]

[0002] The unified TCI State in Release 17 (Rel-17) allows a single TCI state to be indicated to a user equipment (UE), which may be used to assume transmission and reception of the Physical Downlink Control Channel (PDCCH) and Physical Downlink Shared Channel (PDSCH), and / or the Physical Uplink Control Channel (PUCCH) and Physical Uplink Shared Channel (PUSCH).

[0003] In an example scenario of single downlink control information (S-DCI)-based multiple transmission reception point (TRP) operation, a single PDCCH can be used to schedule joint transmissions over two PDCCHs using two TCI states. The TCI states can be configured separately for the PDCCH and PDSCH. The unified TCI state in Rel. 17 can be used as a baseline for enhancements to S-DCI-based multiple-TRP (M-TRP) transmissions. Summary of the Invention

[0004] In a first aspect of the present disclosure, an apparatus is provided, comprising: at least one processor; and at least one memory that stores instructions that, when executed by the at least one processor, cause the apparatus to at least receive an indication related to at least one transmission configuration indicator (TCI) state of a plurality of TCI states including a first TCI state and a second TCI state, determine whether at least one control resource set (CORESET) is associated with at least one of a single frequency network (SFN) mode or a repetition mode, and monitor the at least one CORESET based on the first TCI state if the at least one CORESET is not associated with at least one of the SFN mode or the repetition mode, or monitor the at least one CORESET based on at least the second TCI state if the at least one CORESET is associated with at least one of the SFN mode or the repetition mode.

[0005] In a second aspect of the present disclosure, an apparatus is provided, comprising: at least one processor; and at least one memory that stores instructions that, when executed by the at least one processor, cause the apparatus to at least: transmit an indication related to at least one transmission configuration indicator (TCI) state of a plurality of TCI states including a first TCI state and a second TCI state; determine whether at least one control resource set (CORESET) is associated with at least one of a single frequency network (SFN) mode or a repetitive mode; and, if the at least one CORESET is not associated with at least one of the SFN mode or the repetitive mode, perform transmission on a control channel using the at least one CORESET based on the first TCI state, or if the at least one CORESET is associated with at least one of the SFN mode or the repetitive mode, perform transmission using the at least one CORESET based on the at least second TCI state.

[0006] In a third aspect of the present disclosure, a method is provided, comprising: receiving an indication related to at least one transmission configuration indicator (TCI) state of a plurality of TCI states including a first TCI state and a second TCI state; determining whether at least one control resource set (CORESET) is associated with at least one of a single frequency network (SFN) mode or a repetitive mode; and monitoring the at least one CORESET based on the first TCI state if the at least one CORESET is not associated with at least one of the SFN mode or the repetitive mode, or monitoring the at least one CORESET based on at least the second TCI state if the at least one CORESET is associated with at least one of the SFN mode or the repetitive mode.

[0007] In a fourth aspect of the present disclosure, a method is provided, comprising: transmitting an indication related to at least one transmission configuration indicator (TCI) state of a plurality of TCI states including a first TCI state and a second TCI state; determining whether at least one control resource set (CORESET) is associated with at least one of a single frequency network (SFN) mode or a repetitive mode; and performing transmission on a control channel using the at least one CORESET based on the first TCI state if the at least one CORESET is not associated with at least one of the SFN mode or the repetitive mode, or performing transmission using the at least one CORESET based on the at least second TCI state if the at least one CORESET is associated with at least one of the SFN mode or the repetitive mode.

[0008] In a fifth aspect of the present disclosure, an apparatus is provided, comprising: means for receiving an indication related to at least one transmission configuration indicator (TCI) state of a plurality of TCI states including a first TCI state and a second TCI state; means for determining whether at least one control resource set (CORESET) is associated with at least one of a single frequency network (SFN) mode or a repetitive mode; and means for monitoring the at least one CORESET based on the first TCI state if the at least one CORESET is not associated with at least one of the SFN mode or the repetitive mode, or means for monitoring the at least one CORESET based on at least the second TCI state if the at least one CORESET is associated with at least one of the SFN mode or the repetitive mode.

[0009] In a sixth aspect of the present disclosure, an apparatus is provided, comprising: means for transmitting an indication related to at least one transmission configuration indicator (TCI) state of a plurality of TCI states including a first TCI state and a second TCI state; means for determining whether at least one control resource set (CORESET) is associated with at least one of a single frequency network (SFN) mode or a repetitive mode; and means for performing transmission on a control channel using the at least one CORESET based on the first TCI state if the at least one CORESET is not associated with the at least one of the SFN mode or the repetitive mode, or means for performing transmission using the at least one CORESET based on the at least second TCI state if the at least one CORESET is associated with the at least one of the SFN mode or the repetitive mode.

[0010] In a seventh aspect of the present disclosure, there is provided a computer-readable medium comprising instructions stored on the medium for causing an apparatus to perform at least a method according to the third or fourth aspect.

[0011] It should be understood that this Summary section is not intended to identify key or important features of the embodiments of the present disclosure, nor is it intended to be used to limit the scope of the present disclosure. Other features of the present invention will be readily apparent from the following description.

[0012] Several exemplary embodiments will now be described with reference to the accompanying drawings. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 illustrates an exemplary communication environment in which exemplary embodiments of the present disclosure may be implemented. [Figure 2] FIG. 2 is an example signaling diagram of a communication process according to some example embodiments of the present disclosure. [Figure 3] 1 is a flowchart of a method according to some exemplary embodiments of the present disclosure. [Figure 4] FIG. 10 is an example diagram of an example mapping of control resource sets (CORESETs) and search space sets in a repetition mode according to some example embodiments of the present disclosure. [Figure 5] 1 is a flowchart of a method according to some exemplary embodiments of the present disclosure. [Figure 6] FIG. 10 illustrates an example signaling diagram of application of TCI states according to some exemplary embodiments of the present disclosure. [Figure 7] FIG. 1 is a simplified block diagram of an apparatus suitable for practicing exemplary embodiments of the present disclosure. [Figure 8] 1 is a block diagram of an exemplary computer-readable medium according to some exemplary embodiments of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0014] Throughout the drawings, the same or similar reference numbers represent the same or similar elements.

[0015] The principles of the present disclosure will now be described with reference to several exemplary embodiments. It should be understood that these embodiments are set forth for illustrative purposes only, and are intended to assist those skilled in the art in understanding and practicing the present disclosure, without implying any limitation on the scope of the present disclosure. The embodiments described herein can be implemented in various ways other than those described below.

[0016] In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0017] References in this disclosure to "one embodiment," "one embodiment," "one exemplary embodiment," etc. indicate that the described embodiment may include a particular feature, structure, or characteristic, but not all embodiments need include the particular feature, structure, or characteristic. Moreover, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with one embodiment, it is believed to be within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments, whether or not explicitly described.

[0018] As used herein, terms such as "first," "second," and the like may be used to describe various elements, but it should be understood that these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element could be termed a second element, and similarly, a second element could be termed a first element, without departing from the scope of the exemplary embodiments. As used herein, the term "and / or" includes any and all combinations of one or more of the listed terms.

[0019] As used herein, "at least one of: " and "at least one of " and similar phrases where a list of two or more elements is joined by "and" or "or" mean at least any one of the elements, or at least any two or more of the elements, or at least all of the elements.

[0020] As used herein, unless explicitly stated, performing a step "in response to A" does not indicate that the step is performed immediately after the occurrence of "A," and may include one or more intervening steps.

[0021] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit example embodiments. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It will be further understood that the terms "comprise," "comprising," "have," "having," "include," and / or "including," as used herein, indicate the presence of stated features, elements, and / or components, etc., and do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0022] As used in this application, the term "circuit" may refer to one or more or all of the following: (a) Circuit implementation in hardware only (e.g., implementation in analog and / or digital circuitry only) (b) A combination of hardware circuitry and software, such as (where applicable): (i) a combination of analog and / or digital hardware circuitry and software / firmware; (ii) Any portion of a software-enabled hardware processor (including a digital signal processor), software, and memory that work together to cause a device, such as a mobile phone or server, to perform various functions. (c) Hardware circuitry and / or processors, e.g., microprocessors or portions of microprocessors, that require software (e.g., firmware) to operate, but which may not be present if the software is not necessary for operation.

[0023] This definition of circuit applies to all uses of the term in this application, including any claims. As a further example, as used in this application, the term circuit also covers implementations of a hardware circuit or processor(s) only, or of a portion of a hardware circuit or processor and its (or their) accompanying software and / or firmware. The term circuit also covers, for example, baseband or processor integrated circuits for mobile devices, or similar integrated circuits in servers, cellular network devices, or other computing or network devices, if applicable to certain claim elements.

[0024] As used herein, the term "communications network" refers to a network conforming to any suitable communications standard, such as, for example, New Radio (NR), Long Term Evolution (LTE), LTE-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), Narrow Band Internet of Things (NB-IoT), etc. Furthermore, communications between terminal devices and network devices within a communications network may be performed according to any suitable generation of communications protocol, including, but not limited to, first generation (1G), second generation (2G), 2.5G, 2.75G, third generation (3G), fourth generation (4G), 4.5G, fifth generation (5G) communications protocols, and / or any other protocols now known or developed in the future. Embodiments of the present disclosure may be applied to various communications systems. Given the rapid development of communications, there will naturally be future types of communications technologies and systems in which the present disclosure may be embodied, which should not be considered to limit the scope of the present disclosure to only the aforementioned systems.

[0025] As used herein, the term "network device" refers to a node in a communication network through which a terminal device accesses and receives service from the network. Depending on the terminology and technology applied, a network device may refer to a transmission / reception point (TRP), e.g., a base station (BS) or access point (AP), a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), an NR NB (also referred to as a gNB), a remote radio unit (RRU), a radio header (RH), a remote radio head (RRH), a relay, an integrated access and backhaul (IAB) node, a low-power node, e.g., a femto, pico, non-terrestrial network (NTN) or non-ground network device, e.g., a satellite network device, a low earth orbit (LEO) satellite, a geosynchronous earth orbit (GEO) satellite, an airborne network device, etc. In some exemplary embodiments, a radio access network (RAN) split architecture comprises a Centralized Unit (CU) and a Distributed Unit (DU) at an IAB donor node, where the IAB node comprises a Mobile Terminal (IAB-MT) portion that behaves like a UE with respect to a parent node, and the DU portion of the IAB node behaves like a base station with respect to a next-hop IAB node.

[0026] The term "terminal device" refers to any end device that may be capable of wireless communication. By way of example and not limitation, a terminal device may also be called a communication device, user equipment (UE), subscriber station (SS), portable subscriber station, mobile station (MS), mobile device, user device, or access terminal (AT). Terminal devices may include, but are not limited to, mobile phones, cellular phones, smartphones, voice-over-IP (VoIP) phones, wireless local loop phones, tablets, wearable terminal devices, personal digital assistants (PDAs), portable computers, desktop computers, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback equipment, in-vehicle wireless terminal devices, wireless endpoints, mobile stations, laptop-embedded equipment (LEE), laptop-mounted equipment (LME), USB dongles, smart devices, wireless customer-premises equipment (CPE), Internet of Things (IoT) devices, watches or other wearables, head-mounted displays (HMDs), vehicles, drones, medical devices and applications (e.g., remote surgery), industrial devices and applications (e.g., robots and / or other wireless devices operating in the context of industrial and / or automated processing chains), consumer electronic devices, devices operating on commercial and / or industrial wireless networks, and the like. A terminal device may also correspond to a Mobile Termination (MT) portion of an IAB node (e.g., a relay node). In the following description, the terms "terminal device," "communications device," "terminal," "user equipment," and "UE" may be used interchangeably.

[0027] As used herein, the terms “resource,” “transmission resource,” “resource block,” “physical resource block” (PRB), “uplink resource,” or “downlink resource” may refer to any resource for performing communications, such as communications between a terminal device and a network device, such as a time-domain resource, a frequency-domain resource, a spatial-domain resource, a code-domain resource, or any other resource that enables communications. Hereinafter, unless explicitly stated, resources in both the frequency domain and the time domain are used as examples of transmission resources to describe some exemplary embodiments of the present disclosure. It should be noted that the exemplary embodiments of the present disclosure are equally applicable to other resources in other domains.

[0028] In the unified TCI indication framework of Rel. 17, a beam indication, more specifically a TCI state indication (e.g., an indication of which TCI state to use for transmission and / or reception of signals and channels associated with that TCI state), may be transmitted to a UE. For example, for a serving cell, the unified TCI state type is set to either joint or separate in the uplink (UL) and downlink (DL). For a joint TCI state type, the indicated TCI state is used for both UL and DL. For a separate TCI state type, the DL and UL TCI state types are indicated separately (using separate indications).

[0029] If the TCI state type is joint (or combined), a list of TCI states can be configured in the UE using Radio Resource Control (RRC) signaling. If the TCI state type is separate, a DL TCI state list and a UL TCI state list can be configured in the UE. This configuration can be done using RRC signaling, and some TCI states can be selected via a Media Access Control (MAC) Control Element (CE) (MAC CE or MAC-CE), which can be activated based on the DCI.

[0030] To indicate one TCI state (joint on UL and DL) or multiple TCI states (separate on UL and DL), the network may determine a DCI code point (which is a value in a DCI message) that corresponds to the DCI code point in the MAC CE that activates the TCI state. Upon receiving a DCI-based beam indication (via a DCI code point), the UE may apply the indicated TCI state to the indicated channel (PDSCH, PDCCH, PUSCH, and / or PUCCH). Alternatively, if only a single code point (comprising one or more TCI states) is activated by the MAC CE, this corresponds to the indicated code point (and the DCI may / does not need to be used). Thus, the TCI state indication can be based on the MAC CE, or the MAC CE and the DCI.

[0031] The unified TCI state in Rel-17 can be used as a baseline for enhancements to S-DCI and multi-DCI (M-DCI)-based M-TRP (or MTRP) transmission for uplink (UL) multi-panel transmission in Release 18 (Rel-18). In an example scenario of S-DCI-based multi-TRP operation, a single PDCCH can be used to schedule joint transmissions over two PDCCHs using two TCI states. The TCI states can be configured separately for the PDCCH and PDSCH. However, the unified TCI framework in Rel-17 does not support multi-TRP operation, and Rel-17 does not support single-frequency network (SFN) operation for PDCCH S-DCI operation. The unified TCI state framework (e.g., as defined in Rel-17) needs to be extended for S-DCI based MTRPs and needs to support PDCCH SFN, where PDCCH transmissions (with the same PDCCH information) are performed simultaneously using one or more TRPs or one or more indicated TCI states, but the transmissions are perceived as a single PDCCH transmission.

[0032] Furthermore, Rel-17 allows PDCCH repetition. PDCCH repetition is based on the linking of search space (SS) sets. If linking is provided, the UE assumes that linked search space sets provide the same downlink control information. The unified TCI state framework also needs to be extended to support PDCCH repetition in S-DCI-based MTRP. For example, the network may configure linking between two search space sets (which are further associated with a control resource set (CORESET)) monitored using the configured TCI state.

[0033] To extend the unified TCI framework for S-DCI-based MTRP, several alternative schemes may exist for signaling associations with joint or DL ​​TCI states indicated by DCI or MAC CE for PDCCH repetition and / or PDCCH SFN. For example, RRC parameters in the CORESET configuration may be used to signal the UE whether and / or which indicated joint or DL ​​TCI states to apply to the corresponding PDCCH reception on the CORESET. As another example, RRC parameters in the CORESET configuration may be used to signal which CORESET group the CORESET belongs to and which indicated joint or DL ​​TCI states are associated with each CORESET group. Alternatively, the MAC-CE may be used to signal the UE whether and / or which indicated joint or DL ​​TCI states to apply to the corresponding PDCCH reception on the CORESET. In some scenarios, multi-TRP and single-TRP operation may be switched.

[0034] An exemplary embodiment of the present disclosure proposes an enhanced scheme for S-DCI-based multi-TRP operation in a unified TCI state framework. In this scheme, at least one TCI state of multiple TCI states is dynamically indicated to an apparatus, which may be a terminal device or a UE. The apparatus determines which TCI state to use for monitoring the CORESET based on association of the CORESET with an SFN mode and / or a repetition mode. If the CORESET is not associated with an SFN and / or a repetition mode, a first TCI state of the TCI states can be used. If the CORESET is associated with an SFN and / or a repetition mode, at least a second TCI state of the TCI states can be used.

[0035] In this manner, when two unified TCI states (including a first and a second TCI state) are indicated or activated for a UE, it may be determined how to apply the first and second indicated unified TCI states based on the SFN and / or recurrence configuration. In this manner, it is possible to perform S-DCI-based multi-TRP operation in a unified TCI state framework.

[0036] 1 illustrates an exemplary communication environment 100 in which exemplary embodiments of the present disclosure may be implemented. In the communication environment 100, multiple communication devices may communicate with each other, including a first device 110, a second device 120, and a third device 130. In this example, the first device 110, which may be a terminal device, may simultaneously communicate with devices 120 and 130, which may be network devices such as TRPs.

[0037] It should be understood that the number of devices and their connections shown in Figure 1 are for illustrative purposes only and are not intended to be limiting. Communication environment 100 may include any suitable number of devices configured to implement exemplary embodiments of the present disclosure.

[0038] For illustrative purposes, the following describes some exemplary embodiments in which first device 110 operates as a terminal device and devices 120 and 130 operate as network devices (e.g., TRPs). However, in some exemplary embodiments, operations described with respect to a terminal device may be implemented in a network device or other device, and operations described with respect to a network device may be implemented in a terminal device or other device.

[0039] In some demonstrative embodiments, when the first device 110 is a terminal device and the devices 120 and 130 are network devices, the link from the second device 120 or the third device 130 to the first device 110 is called a downlink (DL), and the link from the first device 110 to the second device 120 or the third device 130 is called an uplink (UL). When the devices 110, 120, and 130 are all terminal devices, the link between these devices is called a sidelink (SL).

[0040] Communications in communication environment 100 may be conducted according to any suitable communications protocol, including, but not limited to, cellular communications protocols such as first generation (1G), second generation (2G), third generation (3G), fourth generation (4G), fifth generation (5G), sixth generation (6G), wireless local network communications protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11, and / or any other protocols now known or developed in the future. Furthermore, communications may utilize any suitable wireless communications technology, including, but not limited to, code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), frequency division duplex (FDD), time division duplex (TDD), multiple input multiple output (MIMO), orthogonal frequency division multiplexing (OFDM), discrete Fourier transform spread OFDM (DFT-s-OFDM), and / or any other technology now known or developed in the future.

[0041] Some exemplary embodiments may be implemented in an exemplary scenario of S-DCI-based multiple TRP operation. For example, a first device 110 (e.g., a UE) may receive transmissions from two devices 120 and 130 (e.g., TRPs) via multiple channels, e.g., via a PDCCH 135 and two PDSCHs 140 and 145. A single PDCCH 135 from a second device 120 may schedule joint transmissions via the two PDCCHs 140 and 145.

[0042] Furthermore, PDCCH SFN may be enabled. PDCCH transmissions with the same PDCCH information from the two devices 120 and 130 to the first device 110 may be performed simultaneously using one or more (indicated) TRP states, and these transmissions may be recognized by the first device 110 as a single PDCCH transmission. PDCCH repetition may also be allowed. Linking between two or more search space sets associated with a CORESET may be configured by the network, which may be monitored using the configured TCI states. PDCCH repetition may be based on the linking of the search space sets. If linking is provided, the UE may assume that the search space sets provide the same downlink control information.

[0043] In some exemplary embodiments, when one or more unified TCI states (e.g., one or both of a first TCI state and a second TCI state) are indicated to the first device 110, the first device 110 may determine how to apply the first and / or second indicated unified TCI states based on the SFN and / or PDCCH repetition settings.

[0044] FIG. 2 illustrates an example signaling diagram of a communication process 200 between a first device 110 and a second device 120 according to some example embodiments of the present disclosure.

[0045] In process 200, the second device 120 (e.g., a TRP) transmits an instruction related to at least one TCI state of a plurality of TCI states to the first device 110 (e.g., a UE) (205). These TCI states may include a first TCI state and a second TCI state. Upon receiving the instruction (210), the first device 110 may determine how to use the indicated TCI state based on an association of at least one CORESET to monitor with at least one of an SFN mode or a repetition mode.

[0046] 2, the first device 110 determines whether at least one CORESET is associated with at least one of an SFN mode or a repetition mode (215). Based on the determination result, the first device 110 monitors the at least one CORESET based on either a first or a second TCI state (220). For example, if the CORESET is not associated with an SFN and / or a repetition mode, the first TCI state (or the second TCI state, e.g., one of the TCI states) may apply. If associated, the second TCI state may also apply.

[0047] Similar rules are used for the second device 120. The second device 120 determines whether at least one CORESET is associated with at least one of the SFN mode or the repetition mode (230). The second device 120 then performs transmission on a control channel (e.g., a PDCCH) using the at least one CORESET based on the association of the CORESET with the SFN and / or the repetition mode. The first and / or second TCI states may be used for the transmission. The control channel may be used to schedule further (data) transmissions from the second device 120 and / or transmissions from other devices, which may include the third device 130. In this way, the unified TCI state framework may be extended for S-DCI M-TRP operation and to support PDCCH (and / or PDSCH) SFN and PDCCH repetition.

[0048] FIG. 3 illustrates a flowchart of an example method 300 implemented in the first device 110 according to some example embodiments of the present disclosure.

[0049] In block 310, the first device 110 (e.g., a UE) receives an indication related to at least one TCI state of a plurality of TCI states including a first TCI state and a second TCI state. The first and second TCI states may be unified TCI states in a unified TCI state framework. For example, the first device 110 may receive an indication of the first and second unified TCI states for one or more CORESETs.

[0050] In some exemplary embodiments, the TCI state may be indicated using DCI-based indication. The TCI state may be selected from a set of TCI states that are activated using a MAC CE from an RRC-configured set. Alternatively, MAC CE-based indication may be used, in which case the MAC CE indicates only one active TCI state from the RRC-configured set and a DCI may not be required.

[0051] Any suitable number of TCI states may be indicated. For example, in a unified TCI framework, a UE (e.g., the first device 110) may have one or up to N indicated TCI states (N=2 is currently considered in R18). More than two indicated TCI states may also be possible.

[0052] In some demonstrative embodiments, the first device 110 may be provided with multiple TCI states via higher layer parameters, such as information about the TCI states. For example, it is assumed that the first device 110 is provided with two indicated TCI states. The indicated TCI states may have indexes 0 and 1 (or first and second, respectively).

[0053] In block 320, the first device 110 determines whether the at least one CORESET is associated with at least one of the SFN mode or the repetition mode. In block 330, the first device 110 monitors the at least one CORESET based on the first and / or second TCI state based on the association of the at least one CORESET with the SFN and / or the repetition mode.

[0054] If the CORESET is not associated with an SFN and / or a repeat mode, monitoring is performed based on the first TCI state. If the CORESET is associated with an SFN and / or a repeat mode, at least a second TCI state may be used. In some exemplary embodiments, if such an association exists, the first device 110 may monitor at least one CORESET based on the first and second TCI states. Alternatively, if the CORESET is not associated with an SFN and / or a repeat mode, monitoring is performed based on the second TCI state.

[0055] As an example, if the CORESET is not associated with an SFN and / or repetition and the indicated TCI state is the first unified TCI state (or the second unified TCI state), the first device 110 may apply the indicated TCI state to the CORESET. For example, either the first unified TCI state or the second unified TCI state may be indicated, but both the first and second unified TCI states may not be indicated simultaneously. Alternatively or additionally, if the indicated TCI state is the second TCI state, the indicated TCI state may not apply and therefore have no effect.

[0056] Taking a UE as an example of the first device 110, in reception according to the TCI state, the first device 110, which may be a UE, may use the DL RS indicated by the indicated TCI state as a reference or quasi-colocation (QCL) assumption for receiving a PDCCH demodulation reference signal (DMRS). This means that the UE assumes reception of the PDCCH according to the indicated TCI state. Alternatively, if there are two RSs indicated by the TCI state, the UE may apply a type-D QCL RS, which is an RS that provides a spatial RX reference.

[0057] In multi-TRP communication, the first device 110, which may be a UE, may be configured with multiple indicated TCI states, each providing a QCL reference for PDCCH reception. The UE may use multiple panels (e.g., at higher frequencies) to receive transmissions in multiple TCI states simultaneously or separately. Which panels the UE uses for reception or how many panels it has for reception may not be explicitly visible to the network.

[0058] In some demonstrative embodiments, the first device 110 may be configured with one or more CORESETs, and logic is used for each CORESET. For example, if the CORESET to which the indicated TCI state applies is not associated with either an SFN or a recurrence (e.g., via SS set linking), the CORESET may always be monitored in a particular indicated TCI state, e.g., with index "0" (first). Alternatively, the CORESET may always be monitored in a particular indicated TCI state, e.g., with index "1" (second, e.g., if only one TCI state is indicated).

[0059] In some exemplary embodiments, the association of a CORESET with an SFN mode may be based on the SFN setting of the CORESET. If the SFN mode is set in the CORESET, it may be determined that the CORESET is associated with the SFN mode. Otherwise, if the SFN mode is not set in the CORESET, it may be determined that the CORESET is not associated with the SFN mode. In one embodiment, if the CORESET is associated with the SFN mode, the CORESET applies both the indicated TCI states ("0" and "1"), if indicated.

[0060] For example, the SFN mode configuration may be a configuration parameter (e.g., SFN parameter) of a CORESET having a specific CORESET identification (ID). For a CORESET in which the SFN parameter is configured, the first and second TCI states may be applied after receiving an indication of the first and second indicated TCI states. For a CORESET in which the SFN parameter is not configured, the first indicated TCI state may be applied. The SFN parameter may be configured using RRC or changed (with / without SFN) using MAC CE / DCI.

[0061] By applying the first and second TCI states to a particular CORESET for which the SFN parameter is set, the first device 110 may be configured to monitor the search space of the CORESET using two different QCL assumptions for reception. For example, the first TCI state may provide a first (DL) RS of the first QCL type D assumption, and the second TCI state may provide a second (DL) RS of the second QCL type D assumption. In such a situation, the first device 110, which may be a UE, may receive PDCCH transmissions using two different assumptions of QCL reference. For example, the UE may use two different panels or beams to receive PDCCH transmissions on the CORESET resources.

[0062] In some exemplary embodiments, the association of a CORESET with an SFN mode may be determined based on the number of TCI states applied or indicated for the CORESET. In one example, when a TCI state is indicated, this may mean that it is indicated for all CORESETs or CORESETs grouped in the same group. For example, in addition to the configuration of the SFN mode for the CORESET (referred to as a first configuration) via higher layer parameters or the like, the first device 110 may receive a second configuration for the CORESET regarding how to follow the indicated TCI state. For example, the CORESET may be configured to follow instructions related to the first and second TCI states or to follow instructions related to one of the first and second TCI states. If it is configured to follow instructions related to the first and second TCI states, i.e., if two TCI states can be indicated or applied for the CORESET, it may be determined that the CORESET is associated with the SFN mode. If it is configured to follow instructions related to one of the first and second TCI states, i.e., if only one TCI state can be indicated or applied to the CORESET, it may be determined that the CORESET is not associated with the SFN mode.

[0063] Taking a UE as an example of the first device 110, the SFN mode setting (e.g., a first setting) may be configured by a higher layer parameter (e.g., sfnSchemePdcch in the serving cell configuration). Whether or not to follow the indicated TCI state may be a second setting, which may be configured per CORESET (e.g., per CORESET ID). For a CORESET configured to follow the first and second indicated TCI states, UE PDCCH reception associated with that CORESET may be considered as SFN operation using the first and second TCI states. The UE may assume that the same information is transmitted simultaneously on CORESET resources using the first and second TCI states. Because the transmitted information is the same, even if (or when) two different beams and / or links (or TRPs) are used for transmission, this may be perceived as a single transmission by the UE.

[0064] For a CORESET that is configured or defined to follow the instructions of only one of the first and second indicated TCI states, UE PDCCH reception associated with that CORESET may be considered non-SFN operation, regardless of the SFN mode configuration applied to the serving cell. Thus, the determination of whether a CORESET is SFN-related may depend on the number of TCI states applied or indicated for the CORESET.

[0065] In one example, CORESET may be configured or defined to follow the instructions of only one (or both) of the first and second indicated TCI states. In one example, if CORESET can be configured to follow (the first and second TCI states), but is not associated with a parameter indicating that both TCI states are to be used for reception (e.g., SFN mode / repetition), only one of the indicated TCI states (e.g., the first or second TCI state) may apply.

[0066] In some exemplary embodiments, when at least one CORESET is associated with the repeat mode, the first device 110 may monitor a CORESET among the at least one CORESET associated with a lower identifier (ID) and / or an earlier monitoring occasion based on the first TCI state. A second TCI state may be applied to a CORESET associated with a higher ID and / or a later monitoring occasion. As a further example, the above example may be determined / configured to be reversed (e.g., a lower CORESET ID or an earlier monitoring occasion is associated with the second TCI state). The ID may be configured as the SS set ID (or SS set) of a linked SS set or the CORESET ID of a CORESET associated via SS set linking. For example, when the repeat mode is configured for more CORESETs, the first indicated TCI state (0) may be applied to a CORESET associated with a lower SS set ID (or SS set) among the linked SS sets or to a CORESET with a lower ID among the CORESETs associated via SS set linking. The second indicated TCI state (1) may apply to the CORESET associated with the higher ID, and vice versa.

[0067] As another example, if a CORESET is associated with a linked SS set that has an earlier monitoring opportunity in time, the CORESET may adopt a first indicated TCI state (0). A later CORESET may adopt a second indicated TCI state (1). This time refers to a search space monitoring opportunity, and the monitoring opportunity (e.g., PDCCH candidate) of the CORESET may be signaled by the search space. An earlier time means that of two linked search spaces (sets), the CORESET associated with the search space set that has the earlier monitoring opportunity is monitored with the first indicated TCI state. The CORESET with the later monitoring opportunity is monitored using the second TCI state (2).

[0068] In some exemplary embodiments, if a CORESET is configured as an SFN CORESET and one TCI state is indicated in the CORESET (i.e., two TCI states (e.g., the first and / or second TCI state) are not indicated), the UE may determine not to apply the indicated TCI state to the CORESET. In one example, the UE may not need to monitor the CORESET for control information depending on the search space configuration.

[0069] FIG. 4 illustrates an example mapping of CORESET and search space set in a repetitive mode according to some example embodiments of the present disclosure.

[0070] 4, search space set 405 (labeled search space set #x) and search space set 410 (labeled search space set #y) are linked via SS set linking. CORESET 415 (labeled CORESET #x) is associated with search space set 405, and CORESET 420 (labeled CORESET #y) is associated with search space set 410. CORESETs 415 and 420 are in repeating mode.

[0071] In this example, the CORESET 415 associated with the linked search space set #x 405 having the earlier monitoring opportunity 425 applies a first directed TCI state 430 (labeled directed TCI state #x), and the CORESET #y 420 associated with the linked search space set 410 having the later monitoring opportunity 435 applies a second directed TCI state 440 (labeled directed TCI state #y).

[0072] 3, in some exemplary embodiments, a repeat mode may be set for one CORESET. For example, the CORESET may be set to be associated with both linked SS sets. In this case, the CORESET may be assumed to have the repeat mode set. The CORESET may then be determined to be associated with the repeat mode.

[0073] For a CORESET with repetition mode set, the first designated TCI state (0) may be applied to a first SS set of the CORESET with an earlier monitoring opportunity. Therefore, the first SS set may be monitored based on the first TCI state. A second TCI state may be applied to monitor a second SS set of the CORESET with a later monitoring opportunity. That is, the second SS set may be monitored based on the second TCI state.

[0074] In some example embodiments, at least the CORESET may be configured with no resource pool index and / or with a single resource pool index. Thus, if a UE is configured with no CORESETPoolIndex values ​​for any of the CORESETs or with a single CORESETpoolindex value for the CORESET in the DL bandwidth part (BWP), the above rule may be used.

[0075] 5 illustrates a flowchart of an exemplary method 500 implemented on second device 120 or third device 130 according to some exemplary embodiments of the present disclosure. For purposes of discussion, method 500 will be described from the perspective of second device 120 of FIG. 1.

[0076] In block 510, the second device 120 transmits an indication related to at least one TCI state of a plurality of TCI states including a first TCI state and a second TCI state. In block 520, the second device 120 determines whether the at least one CORESET is associated with at least one of an SFN mode or a repetitive mode.

[0077] Based on the association of the at least one CORESET with at least one of the SFN mode or the repetitive mode, in block 530, the second device 120 performs transmission on the control channel using the at least one CORESET based on the first and / or second TCI state. If the at least one CORESET is not associated with at least one of the SFN mode or the repetitive mode, the first TCI state is used. If the at least one CORESET is associated with at least one of the SFN mode or the repetitive mode, the at least second TCI state is used.

[0078] In some exemplary embodiments, if the at least one CORESET is associated with at least one of the SFN mode or the repetitive mode, the second device 120 may perform transmissions using the at least one CORESET based on the first and second TCI states.

[0079] In some demonstrative embodiments, if at least one CORESET is associated with a repetitive mode, the second device 120 may perform transmission using a CORESET of the at least one CORESET associated with a lower identifier and / or an earlier transmission opportunity based on the first TCI state.

[0080] In some demonstrative embodiments, second device 120 may determine that a CORESET is associated with a repetition mode if the repetition mode is set for the CORESET among at least one CORESET. Second device 120 may then perform transmission using a first SS set of CORESET associated with an earlier transmission of CORESET based on the first TCI state. And second device 120 may perform transmission using a second SS set of CORESET associated with a later transmission opportunity of CORESET based on the second TCI state.

[0081] In some demonstrative embodiments, second device 120 may determine that a CORESET is associated with SFN mode if SFN mode is set in the CORESET of at least one CORESET, and / or may determine that a CORESET is not associated with SFN mode if SFN mode is not set in the CORESET.

[0082] In some demonstrative embodiments, the second device 120 may determine that a CORESET is associated with SFN mode if the second device 120 is configured to follow instructions related to the first and second TCI states for the CORESET among at least one CORESET for which SFN mode is configured, and / or may determine that the CORESET is not associated with SFN mode if the second device 120 is configured to follow instructions related to one of the first and second TCI states for the CORESET.

[0083] In some demonstrative embodiments, the second device 120 may transmit a first setting of the SFN mode of the CORESET and transmit a second setting for the CORESET to follow instructions associated with the first and second TCI states or to follow instructions associated with one of the first and second TCI states.

[0084] In some example embodiments, at least CORESET may be configured with no resource pool index and / or with a single resource pool index.

[0085] In some exemplary embodiments, an indication related to at least one TCI state may be transmitted via a DCI.

[0086] 6 illustrates an example signaling diagram 600 of TCI state application according to some example embodiments of the present disclosure. For purposes of discussion, the failure case will be described with reference to FIG. 1. It should be understood that this is for illustrative purposes only and does not imply any limitation to the present disclosure.

[0087] As shown in FIG. 6, a first device 110, which may be a UE, may receive upper layer parameters including information regarding TCI states from a second device 120, which may be a network node (605). The first device 110 may receive an indication of first and second unified TCI states from the second device 120 (610). The first device 110 may determine an association between a CORESET and an SFN / repetition (615). The first device 110 may then determine whether to apply the indicated first and / or second TCI states to one or more CORESETs based on the determined CORESET association (620). The first device 110 may then monitor a CORESET for a PDCCH from the second device 120 using the determined first and / or second TCI states (625).

[0088] In this way, the unified TCI state framework may be extended for S-DCI multi-TRP operation, and how to apply the first and second indicated unified TCI states may be determined based on the SFN and / or PDCCH repetition configuration.

[0089] In some demonstrative embodiments, an apparatus capable of performing any of the methods 300 (e.g., the first apparatus 110 of FIG. 1 ) may comprise means for performing each operation of the method 300. The means may be embodied in any suitable form. For example, the means may be embodied in a circuit or a software module. The first apparatus may be embodied as or included in the first apparatus 110 of FIG. 1 .

[0090] In some exemplary embodiments, the apparatus comprises means for receiving an indication related to at least one transmission configuration indicator (TCI) state of a plurality of TCI states including a first TCI state and a second TCI state; means for determining whether at least one control resource set (CORESET) is associated with at least one of a single frequency network (SFN) mode or a repetitive mode; and means for monitoring the at least one CORESET based on the first TCI state if the at least one CORESET is not associated with at least one of the SFN mode or the repetitive mode, or means for monitoring the at least one CORESET based on at least the second TCI state if the at least one CORESET is associated with at least one of the SFN mode or the repetitive mode.

[0091] In some exemplary embodiments, if the at least one CORESET is associated with at least one of an SFN mode or a repetitive mode, the apparatus is configured to monitor the at least one CORESET based on the first and second TCI states.

[0092] In some demonstrative embodiments, the means for monitoring at least one CORESET based on the first and second TCI states comprises means for monitoring a CORESET of the at least one CORESET associated with a lower identifier and / or an earlier monitoring opportunity based on the first TCI state if the at least one CORESET is associated with a repeat mode.

[0093] In some exemplary embodiments, the means for determining whether at least one CORESET is associated with at least one of an SFN mode or a repeat mode comprises means for determining that the CORESET is associated with a repeat mode if the repeat mode is set for the CORESET among the at least one CORESET, and the means for monitoring the at least one CORESET based on the first and second TCI states comprises means for monitoring a first search space (SS) set of the CORESET associated with an earlier monitoring opportunity for the CORESET based on the first TCI state, and means for monitoring a second SS set of the CORESET associated with a later monitoring opportunity for the CORESET based on the second TCI state.

[0094] In some exemplary embodiments, the means for determining whether at least one CORESET is associated with at least one of the SFN mode or the repetition mode comprises means for determining that the CORESET is associated with the SFN mode if the SFN mode is set for a CORESET among the at least one CORESET, and / or means for determining that the CORESET is not associated with the SFN mode if the SFN mode is not set for the CORESET.

[0095] In some exemplary embodiments, the means for determining whether at least one CORESET is associated with at least one of the SFN mode or the repetitive mode comprises means for receiving a first configuration of the SFN mode for the CORESET of the at least one CORESET; means for receiving a second configuration for the CORESET of whether to follow instructions associated with the first and second TCI states or to follow instructions associated with one of the first and second TCI states; and means for determining that the CORESET is associated with the SFN mode if configured to follow instructions associated with the first and second TCI states, or means for determining that the CORESET is not associated with the SFN mode if configured to follow instructions associated with one of the first and second TCI states.

[0096] In some example embodiments, at least CORESET is not configured with a resource pool index and / or is configured with a single resource pool index.

[0097] In some exemplary embodiments, the indication related to the at least one TCI state is received via downlink control information (DCI).

[0098] In some demonstrative embodiments, an apparatus capable of performing any of the methods 500 (e.g., the second apparatus 120 or the third apparatus 130 of FIG. 1 ) may comprise means for performing each operation of the method 500. The means may be embodied in any suitable form. For example, the means may be embodied in a circuit or a software module. The second apparatus may be embodied as or included in the second apparatus 120 or the third apparatus 130 of FIG. 1 .

[0099] In some exemplary embodiments, the apparatus comprises means for transmitting an instruction related to at least one transmission configuration indicator (TCI) state of a plurality of TCI states including a first TCI state and a second TCI state; means for determining whether at least one control resource set (CORESET) is associated with at least one of a single frequency network (SFN) mode or a repetitive mode; and means for performing a transmission on a control channel using the at least one CORESET based on the first TCI state if the at least one CORESET is not associated with the at least one of the SFN mode or the repetitive mode, or means for performing a transmission using the at least one CORESET based on the at least second TCI state if the at least one CORESET is associated with the at least one of the SFN mode or the repetitive mode.

[0100] In some exemplary embodiments, if the at least one CORESET is associated with at least one of an SFN mode or a repetitive mode, the apparatus is configured to perform transmissions using the at least one CORESET based on the first and second TCI states.

[0101] In some demonstrative embodiments, the means for performing transmission using at least one CORESET based on the first and second TCI states comprises means for performing transmission using a CORESET of the at least one CORESET associated with a lower identifier and / or an earlier transmission opportunity based on the first TCI state if the at least one CORESET is associated with a repetition mode.

[0102] In some exemplary embodiments, the means for determining whether at least one CORESET is associated with at least one of an SFN mode or a repetition mode comprises means for determining that the CORESET is associated with the repetition mode if the repetition mode is set for the CORESET among the at least one CORESET, and the means for performing transmission using the at least one CORESET based on the first and second TCI states comprises means for performing transmission using a first search space (SS) set of the CORESET associated with an earlier transmission of the CORESET based on the first TCI state, and means for performing transmission using a second SS set of the CORESET associated with a later transmission opportunity of the CORESET based on the second TCI state.

[0103] In some exemplary embodiments, the means for determining whether at least one CORESET is associated with at least one of the SFN mode or the repetition mode comprises means for determining that the CORESET is associated with the SFN mode if the SFN mode is set for the CORESET among the at least one CORESET, and / or means for determining that the CORESET is not associated with the SFN mode if the SFN mode is not set for the CORESET.

[0104] In some exemplary embodiments, the means for determining whether at least one CORESET is associated with at least one of the SFN mode or the repetitive mode comprises means for determining that the CORESET is associated with the SFN mode if the CORESET of the at least one CORESET for which the SFN mode is configured is configured to follow instructions associated with the first and second TCI states, and / or means for determining that the CORESET is not associated with the SFN mode if the CORESET is configured to follow instructions associated with one of the first and second TCI states.

[0105] In certain exemplary embodiments, the apparatus further comprises means for transmitting a first configuration of an SFN mode for the CORESET and means for transmitting a second configuration for the CORESET according to instructions associated with the first and second TCI states or according to instructions associated with one of the first and second TCI states.

[0106] In some example embodiments, at least CORESET is not configured with a resource pool index and / or is configured with a single resource pool index.

[0107] In some exemplary embodiments, the indication related to the at least one TCI state is transmitted via downlink control information (DCI).

[0108] In some exemplary embodiments, the indication related to at least one TCI state is transmitted via a MAC Control Element (MAC CE).

[0109] 7 is a simplified block diagram of an apparatus 700 suitable for implementing an exemplary embodiment of the present disclosure. The apparatus 700 may be provided to implement a communications device such as the first apparatus 110, the second apparatus 120, or the third apparatus 130 shown in FIG. 1, 2, 3, 5, or 6. As shown, the apparatus 700 includes one or more processors 710, one or more memories 720 coupled to the processors 710, and one or more communications modules 740 coupled to the processors 710.

[0110] The communications module 740 is for two-way communication. The communications module 740 has one or more communications interfaces to facilitate communication with one or more other modules or devices. The communications interfaces may represent any interface necessary for communication with other network elements. In some demonstrative embodiments, the communications module 740 may include at least one antenna.

[0111] The processor 710 may be of any type suitable for a local technology network and may include, by way of non-limiting example, one or more of a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), and a processor based on a multi-core processor architecture. The device 700 may have multiple processors, such as application-specific integrated circuit chips, time-slaved to a clock that synchronizes the main processor.

[0112] The memory 720 may include one or more nonvolatile memories and one or more volatile memories. Examples of nonvolatile memory include, but are not limited to, read-only memory (ROM) 724, electrically programmable read-only memory (EPROM), flash memory, hard disks, compact disks (CDs), digital video disks (DVDs), optical disks, laser disks, and other magnetic and / or optical storage. Examples of volatile memory include, but are not limited to, random access memory (RAM) 722 and other volatile memory that does not persist during power-off periods.

[0113] The computer program 730 includes computer-executable instructions that are executed by the associated processor 710. The instructions of the program 730 may include instructions for performing the operations / acts of some example embodiments of the present disclosure. The program 730 may be stored in a memory, such as the ROM 724. The processor 710 may perform any appropriate actions and processes by loading the program 730 into the RAM 722.

[0114] An exemplary embodiment of the present disclosure may be implemented by a program 730, such that the device 700 may execute any of the processes of the present disclosure described with reference to Figures 1 to 6. An exemplary embodiment of the present disclosure may also be implemented by hardware or a combination of software and hardware.

[0115] In some exemplary embodiments, the program 730 may be tangibly contained in a computer-readable medium, which may be contained within the apparatus 700 (e.g., in memory 720) or other storage device accessible by the apparatus 700. The apparatus 700 may load the program 730 from the computer-readable medium into RAM 722 and execute it. In some exemplary embodiments, the computer-readable medium may include any type of non-transitory storage medium, such as ROM, EPROM, flash memory, hard disk, CD, DVD, etc. The term "non-transitory," as used herein, is not a limitation on the permanence of the data storage (e.g., RAM vs. ROM), but rather a limitation of the medium itself (i.e., tangible as opposed to a signal).

[0116] 8 shows an example of a computer readable medium 800, which may be in the form of a CD, DVD, or other optical storage disc. The computer readable medium 800 has the program 730 stored thereon.

[0117] In general, various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic, or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor, or other computing device. While various aspects of the embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using other graphical representations, it should be understood that the blocks, apparatus, systems, techniques, or methods described herein may be implemented in, by way of non-limiting example, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller, or other computing device, or combinations thereof.

[0118] Some exemplary embodiments of the present disclosure also provide at least one computer program product tangibly stored on a computer-readable medium, such as a non-transitory computer-readable medium. The computer program product includes computer-executable instructions, such as those contained in program modules, that execute on a target physical or virtual processor in a device to perform any of the methods described above. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The functionality of the program modules may be combined or divided among program modules as desired in various embodiments. The machine-executable instructions of a program module may be executed in a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.

[0119] Program code for carrying out the methods of the present disclosure may be written in any combination of one or more programming languages. The program code may be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus, so that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be performed. The program code may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0120] In the context of the present disclosure, computer program code or associated data may be carried by any suitable carrier to enable a device, apparatus, or processor to perform the various processes and operations described above. Examples of carriers include signals, computer-readable media, etc.

[0121] The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination thereof. More specific examples of the computer-readable storage medium include an electrical connection using one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0122] Furthermore, while operations are shown in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown, sequentially, or that all of the illustrated operations be performed, to achieve desired results. In certain situations, multitasking and parallel processing may be advantageous. Similarly, while the above description includes several specific implementation details, these should not be construed as limiting the scope of the disclosure, but rather as descriptions of features that may be specific to particular embodiments. Unless expressly stated, certain features that are described in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, unless expressly stated, various features that are described in the context of a single embodiment may also be implemented in multiple embodiments separately or in any suitable subcombination.

[0123] Although the present invention has been described in language specific to structural features and / or methodological acts, it is to be understood that the invention as defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims

1. at least one processor; at least one memory for storing instructions; wherein the instructions, when executed by the at least one processor, cause the device to at least: receiving an indication associated with at least one transmission configuration indicator (TCI) state of a plurality of TCI states including a first TCI state and a second TCI state; Determining whether at least one control resource set (CORESET) is associated with at least one of a single frequency network (SFN) mode or a repetition mode; monitoring the at least one CORESET based on the first TCI state if the at least one CORESET is not associated with the at least one of the SFN mode or the repetition mode; or monitoring the at least one CORESET based on at least the second TCI state if the at least one CORESET is associated with the at least one of the SFN mode or the repetition mode. A device that performs the following.

2. 2. The apparatus of claim 1, wherein if the at least one CORESET is associated with the at least one of the SFN mode or the repetitive mode, the apparatus is configured to monitor the at least one CORESET based on the first and second TCI states.

3. Monitoring the at least one CORESET based on the first and second TCI conditions includes: monitoring a CORESET of the at least one CORESET associated with a lower identifier and / or an earlier monitoring opportunity based on the first TCI state if the at least one CORESET is associated with the recurring mode; The apparatus of claim 2 , comprising:

4. Determining whether the at least one CORESET is associated with the at least one of the SFN mode or the repetition mode includes: determining that the CORESET is associated with the repeat mode when the repeat mode is set in a CORESET among the at least one CORESET; Equipped with Monitoring the at least one CORESET based on the first and second TCI conditions includes: monitoring a first search space (SS) set of the CORESET associated with an earlier monitoring opportunity of the CORESET based on the first TCI state; monitoring a second SS set of the CORESET associated with a later monitoring opportunity of the CORESET based on the second TCI state; The apparatus of claim 2 , comprising:

5. Determining whether the at least one CORESET is associated with the at least one of the SFN mode or the repetition mode includes: determining that the CORESET is associated with the SFN mode if the SFN mode is configured in a CORESET of the at least one CORESET; and / or If the SFN mode is not set in the CORESET, determining that the CORESET is not associated with the SFN mode. The device according to any one of claims 1 to 4, comprising:

6. Determining whether the at least one CORESET is associated with the at least one of the SFN mode or the repetition mode includes: receiving a first configuration of the SFN mode of a CORESET of the at least one CORESET; receiving a second configuration for the CORESET to follow instructions associated with the first and second TCI states or to follow instructions associated with one of the first and second TCI states; determining that the CORESET is associated with the SFN mode if configured to follow the instructions associated with the first and second TCI states; or determining that the CORESET is not associated with the SFN mode if configured to follow the instruction associated with the one of the first and second TCI states; The device according to any one of claims 1 to 5, comprising:

7. The device according to claim 1 , wherein at least the CORESET is not configured with an index for a resource pool and / or is configured with a single index for a resource pool.

8. The apparatus of any one of claims 1 to 7, wherein the indication relating to the at least one TCI state is received via Downlink Control Information (DCI).

9. at least one processor; at least one memory for storing instructions; wherein the instructions, when executed by the at least one processor, cause the device to at least: transmitting an indication associated with at least one transmission configuration indicator (TCI) state of a plurality of TCI states including a first TCI state and a second TCI state; Determining whether at least one control resource set (CORESET) is associated with at least one of a single frequency network (SFN) mode or a repetition mode; performing transmissions on a control channel using the at least one CORESET based on the first TCI state if the at least one CORESET is not associated with the at least one of the SFN mode or the repetition mode; or performing the transmission using the at least one CORESET based on at least the second TCI state if the at least one CORESET is associated with the at least one of the SFN mode or the repetition mode; A device that performs the following.

10. 10. The apparatus of claim 9, wherein if the at least one CORESET is associated with the at least one of the SFN mode or the repetition mode, the apparatus is configured to perform the transmission using the at least one CORESET based on the first and second TCI states.

11. Determining whether the at least one CORESET is associated with the at least one of the SFN mode or the repetition mode includes: determining that the CORESET is associated with the SFN mode if the SFN mode is configured in a CORESET of the at least one CORESET; and / or If the SFN mode is not set in the CORESET, determining that the CORESET is not associated with the SFN mode.

11. The apparatus according to claim 9 or 10, comprising:

12. receiving an indication associated with at least one transmission configuration indicator (TCI) state of a plurality of TCI states including a first TCI state and a second TCI state; Determining whether at least one control resource set (CORESET) is associated with at least one of a single frequency network (SFN) mode or a repetition mode; monitoring the at least one CORESET based on the first TCI state if the at least one CORESET is not associated with the at least one of the SFN mode or the repetition mode; or monitoring the at least one CORESET based on at least the second TCI state if the at least one CORESET is associated with the at least one of the SFN mode or the repetition mode. A method comprising:

13. 13. The method of claim 12, wherein if the at least one CORESET is associated with the at least one of the SFN mode or the repetitive mode, the device is configured to monitor the at least one CORESET based on the first and second TCI states.

14. Monitoring the at least one CORESET based on the first and second TCI conditions includes: monitoring a CORESET of the at least one CORESET associated with a lower identifier and / or an earlier monitoring opportunity based on the first TCI state if the at least one CORESET is associated with the recurring mode; The method of claim 13 comprising:

15. Determining whether the at least one CORESET is associated with the at least one of the SFN mode or the repetition mode includes: determining that the CORESET is associated with the repeat mode when the repeat mode is set in a CORESET among the at least one CORESET; Equipped with Monitoring the at least one CORESET based on the first and second TCI conditions includes: monitoring a first search space (SS) set of the CORESET associated with an earlier monitoring opportunity of the CORESET based on the first TCI state; monitoring a second SS set of the CORESET associated with a later monitoring opportunity of the CORESET based on the second TCI state; The method of claim 13 comprising:

16. Determining whether the at least one CORESET is associated with the at least one of the SFN mode or the repetition mode includes: determining that the CORESET is associated with the SFN mode if the SFN mode is configured in a CORESET of the at least one CORESET; and / or If the SFN mode is not set in the CORESET, determining that the CORESET is not associated with the SFN mode. The method of any one of claims 12 to 15, comprising:

17. Determining whether the at least one CORESET is associated with the at least one of the SFN mode or the repetition mode includes: receiving a first configuration of the SFN mode of a CORESET of the at least one CORESET; receiving a second configuration for the CORESET to follow instructions associated with the first and second TCI states or to follow instructions associated with one of the first and second TCI states; determining that the CORESET is associated with the SFN mode if configured to follow the instructions associated with the first and second TCI states; or determining that the CORESET is not associated with the SFN mode if configured to follow the instruction associated with the one of the first and second TCI states; The method of any one of claims 12 to 16, comprising:

18. The method according to any one of claims 12 to 17, wherein at least the CORESET is not configured with an index for a resource pool and / or is configured with a single index for a resource pool.

19. The method of any one of claims 12 to 18, wherein the indication related to the at least one TCI state is received via Downlink Control Information (DCI).

20. transmitting an indication associated with at least one transmission configuration indicator (TCI) state of a plurality of TCI states including a first TCI state and a second TCI state; Determining whether at least one control resource set (CORESET) is associated with at least one of a single frequency network (SFN) mode or a repetition mode; performing transmissions on a control channel using the at least one CORESET based on the first TCI state if the at least one CORESET is not associated with the at least one of the SFN mode or the repetition mode; or performing the transmission using the at least one CORESET based on at least the second TCI state if the at least one CORESET is associated with the at least one of the SFN mode or the repetition mode; A method comprising:

21. 21. The method of claim 20, wherein if the at least one CORESET is associated with the at least one of the SFN mode or the repetition mode, the device is configured to perform the transmission using the at least one CORESET based on the first and second TCI states.

22. Determining whether the at least one CORESET is associated with the at least one of the SFN mode or the repetition mode includes: determining that the CORESET is associated with the SFN mode if the SFN mode is configured in a CORESET of the at least one CORESET; and / or If the SFN mode is not set in the CORESET, determining that the CORESET is not associated with the SFN mode.

22. The method of claim 20 or 21, comprising:

23. A computer readable medium comprising instructions stored thereon to cause an apparatus to perform at least the method according to any one of claims 13 to 20 or the method according to any one of claims 20 to 22.

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