Enhancements for multi-TRP mode

Abstract

In one aspect, a method includes: determining first SSB burst set information corresponding to a first PCI; determining second SSB burst set information corresponding to a second PCI, the second PCI being different from the first PCI; and monitoring at least a first SSB from the first SSB burst set and at least a second SSB from the second SSB burst set. In another aspect, a method includes: determining a number of RSRP reports to be sent based on a CSI report request; sending a first RSRP report for a first beam of a plurality of beams, the first beam being associated with a first group of beams of a plurality of groups; and sending a second RSRP report for a second beam of the plurality of beams, the second beam being associated with a second group of beams of the plurality of groups.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to U.S. Patent Application No. 16 / 934,882, filed on July 21, 2020, entitled “ENHANCEMENTS FOR MULTI-TRP MODES,” and U.S. Provisional Patent Application No. 62 / 885,084, filed on August 9, 2019, entitled “Enhancements For Multi-TRP Modes,” both of which are expressly incorporated herein by reference in their entirety. Technical Field

[0003] Generally speaking, aspects of the present disclosure relate to wireless communication systems, and more particularly, to enhanced SSB burst set monitoring and enhanced reporting and beam management for multiple transmit receive point (TRP) modes. Background Art

[0004] Wireless communication networks are widely deployed to provide various communication services, such as voice, video, packet data, messaging, broadcasting, etc. These wireless networks can be multiple access networks that can support multiple users by sharing available network resources. Such a network (which is usually a multiple access network) supports communications for multiple users by sharing available network resources. An example of such a network is the Universal Terrestrial Radio Access Network (UTRAN). UTRAN is a radio access network (RAN) defined as a part of the Universal Mobile Telecommunications System (UMTS) supported by the Third Generation Partnership Project (3GPP), a third generation (3G) mobile phone technology. Examples of multiple access network formats include code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, and single carrier FDMA (SC-FDMA) networks.

[0005] A wireless communication network may include multiple base stations or Node Bs that can support communications for multiple user equipments (UEs). A UE may communicate with a base station via a downlink and an uplink. A downlink (or forward link) refers to a communication link from a base station to a UE, and an uplink (or reverse link) refers to a communication link from a UE to a base station.

[0006] The base station may send data and control information to the UE on the downlink, and / or receive data and control information from the UE on the uplink. On the downlink, the transmission from the base station may encounter interference caused by transmissions from neighboring base stations or transmissions from other wireless radio frequency (RF) transmitters. On the uplink, the transmission from the UE may encounter interference from uplink transmissions of other UEs or other wireless RF transmitters communicating with the neighboring base stations. This interference may degrade the performance on both the downlink and uplink.

[0007] As the demand for mobile broadband access continues to increase, the potential for interference and congested networks increases as more UEs access long-range wireless communication networks and more short-range wireless systems are deployed in communities. Research and development continue to advance wireless technologies to not only meet the growing demand for mobile broadband access, but also to advance and enhance the user experience with mobile communications. Summary of the invention

[0008] The following summarizes some aspects of the present disclosure to provide a basic understanding of the technology discussed. This summary is not an extensive overview of all expected features of the present disclosure, and is neither intended to identify key or important elements of all aspects of the present disclosure, nor to describe the scope of any or all aspects of the present disclosure. Its sole purpose is to present some concepts of one or more aspects of the present disclosure in a summarized form as a prelude to the specific embodiments presented later.

[0009] The described technology relates to improved methods, systems, devices and apparatuses that support enhanced SSB burst set determination and monitoring processes and enhanced beam reporting and monitoring processes. Such enhanced SSB burst set determination and monitoring processes and enhanced beam reporting and monitoring processes can achieve enhanced operation in multi-TRP mode. Therefore, such technology can increase reliability and throughput, reduce latency, and achieve operation in URLLC mode.

[0010] In one aspect of the present disclosure, a method of wireless communication includes: determining, by a user equipment (UE), first synchronization signal block (SSB) burst set information corresponding to a first physical cell identifier (PCI); determining, by the UE, second SSB burst set information corresponding to a second PCI, the second PCI being different from the first PCI; and monitoring, by the UE, at least a first SSB from the first SSB burst set and at least a second SSB from the second SSB burst set.

[0011] In an additional aspect of the present disclosure, an apparatus configured for wireless communication is disclosed. The apparatus includes at least one processor and a memory coupled to the processor. The processor is configured to: determine, by a user equipment (UE), first synchronization signal block (SSB) burst set information corresponding to a first physical cell identifier (PCI); determine, by the UE, second SSB burst set information corresponding to a second PCI, the second PCI being different from the first PCI; and monitor, by the UE, at least a first SSB from the first SSB burst set and at least a second SSB from the second SSB burst set.

[0012] In another aspect of the present disclosure, a method of wireless communication includes: a network entity sending an SSB index of a first synchronization signal block (SSB) burst set corresponding to a first physical cell identifier (PCI); a network entity sending an RRC configuration message indicating that a field of a specific type of message is configured to indicate an SSB index of a second SSB burst set of a second PCI; and a network entity sending a message of a specific type of message configured by an RRC configuration message from a second PCI, the message indicating a specific SSB index of a second SSB burst set of the second PCI.

[0013] In an additional aspect of the present disclosure, a device configured for wireless communication is disclosed. The device includes at least one processor and a memory coupled to the processor. The processor is configured to: send, by a network entity, an SSB index of a first synchronization signal block (SSB) burst set corresponding to a first physical cell identifier (PCI); send, by a network entity, an RRC configuration message, wherein a field of the RRC configuration message indicating a specific type of message is configured to indicate an SSB index of a second SSB burst set of a second PCI; and send, by a network entity, a message of a specific type of message configured by an RRC configuration message from a second PCI, wherein the message indicates a specific SSB index of a second SSB burst set of the second PCI.

[0014] The features and technical advantages of the examples according to the present disclosure have been summarized quite extensively above so that the subsequent specific embodiments can be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples can be easily used as the basis for modifying or designing other structures for the same purpose of performing the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. When considered in conjunction with the accompanying drawings, the characteristics of the concepts disclosed herein (both their organization and method of operation) and the associated advantages will be better understood according to the following description. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description and is not intended to be a definition of the scope of the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] A further understanding of the nature and advantages of the present disclosure may be obtained by referring to the following drawings. In the drawings, similar components or features may have the same reference numerals. In addition, individual components of the same type may be distinguished by following the reference numeral with a dash and a second reference numeral for distinguishing similar components. If only the first reference numeral is used in the specification, the description is applicable to any of the similar components having the same first reference numeral, regardless of the second reference numeral.

[0016] Figure 1 is a block diagram showing details of a wireless communication system.

[0017] Figure 2 is a block diagram showing a design of a base station and a UE configured according to one aspect of the present disclosure.

[0018] Figure 3 is a schematic diagram illustrating an example of a wireless communication system supporting a multiple transmission / reception point (TRP) scheme according to aspects of the present disclosure.

[0019] Figure 4 is a block diagram illustrating examples of process flows for different multi-TRP schemes according to aspects of the present disclosure.

[0020] Figures 5A-5D is a schematic diagram illustrating different multi-TRP schemes according to various aspects of the present disclosure.

[0021] Fig. 6A and 6B is a schematic diagram showing an SSB burst set.

[0022] Figure 7 is a block diagram illustrating an example of a wireless communication system implementing enhanced SSB burst set detection and monitoring in accordance with aspects of the present disclosure.

[0023] Figures 8A-8F Each is a schematic diagram of an information element used to indicate an SSB index.

[0024] Fig. 9 is a block diagram illustrating an example of a wireless communication system implementing enhanced beam management and reporting in accordance with aspects of the present disclosure.

[0025] Figures 10A-10C 2 are schematic diagrams illustrating examples of enhanced beam management and reporting according to aspects of the present disclosure.

[0026] Figures 11A-11C 2 are schematic diagrams illustrating examples of beam reporting options according to various aspects of the present disclosure.

[0027] Fig.12is a block diagram illustrating example blocks executed by a UE configured according to an aspect of the present disclosure.

[0028] Fig.13 is a block diagram illustrating example blocks executed by a base station configured according to an aspect of the present disclosure.

[0029] Fig.14 is a block diagram conceptually illustrating a design of a UE according to some embodiments of the present disclosure.

[0030] Fig.15 is a block diagram conceptually illustrating a design of a base station according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0031] The following summarizes some aspects of the present disclosure to provide a basic understanding of the technology discussed. This summary is not an extensive overview of all expected features of the present disclosure, and is neither intended to identify key or important elements of all aspects of the present disclosure, nor to describe the scope of any or all aspects of the present disclosure. Its sole purpose is to present some concepts of one or more aspects of the present disclosure in a summarized form as a prelude to the specific embodiments presented later.

[0032] Specific embodiments relate to SSB burst set determination and monitoring enhancement and enhanced beam reporting and monitoring enhancement. Traditionally, SSB burst set determination and monitoring are performed by the UE relative to a single master base station / serving cell during cell search. Even when operating in a multi-transmit receive point (TRP) mode, the UE operation is still defined within a given serving cell, that is, the UE still performs SSB burst set monitoring for a single master base station / serving cell. The UE is aware of other cells and cannot receive and / or determine the parameters necessary to construct / determine a second SSB burst set for a second base station / serving cell in some multi-TRP modes. For example, when the second serving cell is a second base station having a second PCI different from the first PCI of the first base station, the UE cannot determine the second SSB burst set information for the second base station. For illustration, the UE cannot determine the timing and position of the index of the second SSB burst set. Therefore, the UE cannot monitor the second SSB burst set to obtain information. Therefore, the UE may not be able to determine the control information and / or timing from the second base station. For certain operating modes (such as URLLC (e.g., eURLLC)), such a process may not be able to achieve high reliability and / or low latency requirements or constraints.

[0033] The described technology relates to improved methods, systems, devices and apparatuses that support enhanced SSB burst set determination and monitoring processes and enhanced beam reporting and monitoring processes. Such enhanced SSB burst set determination and monitoring processes and enhanced beam reporting and monitoring processes can achieve enhanced operation in multi-TRP mode. Therefore, such technology can increase reliability and throughput, reduce latency and achieve operation in URLLC mode.

[0034] The specific embodiments described below in conjunction with the accompanying drawings are intended as descriptions of various configurations and are not intended to limit the scope of the present disclosure. Specifically, the specific embodiments include specific details in order to provide a thorough understanding of the inventive subject matter. It will be apparent to those skilled in the art that these specific details are not required in every case, and in some instances, for the sake of clarity, well-known structures and components are shown in the form of block diagrams.

[0035] The present disclosure generally relates to providing or participating in permitted shared access between two or more wireless communication systems (also referred to as wireless communication networks). In various embodiments, the techniques and devices may be used for wireless communication networks such as code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, single carrier FDMA (SC-FDMA) networks, LTE networks, GSM networks, fifth generation (5G) or new radio (NR) networks, and other communication networks. As described herein, the terms "network" and "system" may be used interchangeably.

[0036] OFDMA networks can implement radio technologies such as Evolved UTRA (E-UTRA), IEEE 802.11, IEEE 802.16, IEEE802.20, Flash-OFDM, etc. UTRA, E-UTRA, and Global System for Mobile Communications (GSM) are part of Universal Mobile Telecommunications System (UMTS). In particular, Long Term Evolution (LTE) is a version of UMTS that uses E-UTRA. UTRA, E-UTRA, GSM, UMTS, and LTE are described in documents provided by an organization named "3rd Generation Partnership Project" (3GPP), and CDMA2000 is described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). Various radio technologies and standards are known or are being developed. For example, the 3rd Generation Partnership Project (3GPP) is a collaboration between telecommunications alliance groups that aims to define globally applicable third generation (3G) mobile phone specifications. 3GPP Long Term Evolution (LTE) is a 3GPP project aimed at improving the Universal Mobile Telecommunications System (UMTS) mobile phone standard. 3GPP may define specifications for the next generation of mobile networks, mobile systems, and mobile devices. The present disclosure relates to the evolution of wireless technologies from LTE, 4G, 5G, NR and beyond, with shared access to wireless spectrum between networks using a collection of new and different radio access technologies or radio air interfaces.

[0037] In particular, 5G networks contemplate a variety of deployments, a variety of spectrums, and a variety of services and devices that can be implemented using a unified OFDM-based air interface. To achieve these goals, in addition to developing new radio technologies for 5G NR networks, further enhancements to LTE and LTE-A are also considered. 5G NR will be able to scale to provide coverage for: (1) Ultra-high density (e.g., ~1M nodes / km) 2 ), ultra-low complexity (e.g., ~10s of bits / second), ultra-low energy (e.g., about 10+ years of battery life), and deep coverage with the ability to reach challenging locations; (2) mission-critical control including strong security for protecting sensitive personal, financial, or confidential information, ultra-high reliability (e.g., ~99.9999% reliability), ultra-low latency (e.g., ~1ms), and user devices with a wide range of mobility or lack thereof; (3) enhanced mobile broadband, including extremely high capacity (e.g., ~10Tbps / km 2 ), extreme data rates (e.g., multi-Gbps rates, user experience rates over 100Mbps), and deep perception with improved discovery and optimization.

[0038] 5G NR can be implemented using an optimized OFDM-based waveform with a scalable digital scheme and transmission time interval (TTI); a general, flexible framework to efficiently multiplex services and features using dynamic, low-latency time division duplex (TDD) / frequency division duplex (FDD) design schemes; and improved wireless technologies such as massive multiple-input, multiple-output (MIMO), powerful millimeter wave (mmWave) transmission, advanced channel coding, and device-centric mobility. The scalability of the digital scheme in 5G NR, as well as the scaling of subcarrier spacing, can efficiently address operational diversity services across different spectrums and different deployments. For example, in various outdoor and macro coverage deployments of less than 3GHz FDD / TDD implementations, the subcarrier spacing on bandwidths of 1, 5, 10, 20MHz, etc. can be 15kHz. For other various outdoor and small cell coverage deployments of TDD greater than 3GHz, the subcarrier spacing can be 30kHz on 80 / 100MHz bandwidth. For various other indoor broadband implementations using TDD on the unlicensed portion of the 5 GHz band, the subcarrier spacing may be 60 kHz over a 160 MHz bandwidth. Finally, for various deployments using mmWave components for transmission with TDD at 28 GHz, the subcarrier spacing may be 120 kHz over a 500 MHz bandwidth.

[0039] 5G NR's scalable digital scheme facilitates scalable TTI for various latency and quality of service (QoS) requirements. For example, shorter TTIs can be used for low latency and high reliability, while longer TTIs can be used for higher spectral efficiency. Efficient multiplexing of long and short TTIs allows transmission to start on symbol boundaries. 5G NR also considers a self-contained integrated subframe design with uplink / downlink scheduling information, data, and acknowledgment in the same subframe. The self-contained integrated subframe supports communications in unlicensed or contention-based shared spectrum, adaptive uplink / downlink, and can be flexibly configured on a per-cell basis to dynamically switch between uplink and downlink to meet current business needs.

[0040] The various other aspects and features of the present disclosure are further described below. It is obvious that the teachings of this article can be embodied in a variety of forms, and any specific structure, function or both disclosed herein are only representative and not restrictive. Based on the teachings of this article, it should be understood by those skilled in the art that the aspects disclosed herein can be implemented independently of any other aspects and can be combined in various ways with two or more aspects of these aspects. For example, any number of aspects set forth herein can be used to implement a device or implement a method. In addition, other structures, functions, or structures and functions other than or different from one or more of the aspects set forth herein can be used to implement such a device or practice such a method. For example, the method can be implemented as a part of a system, device, device, and / or implemented as instructions stored on a computer-readable medium to execute on a processor or computer. In addition, an aspect can include at least one element of a claim.

[0041] Figure 1 1 is a block diagram illustrating a 5G network 100 including various base stations and UEs configured according to aspects of the present disclosure. The 5G network 100 includes multiple base stations 105 and other network entities. A base station may be a station that communicates with a UE and may also be referred to as an evolved Node B (eNB), a next generation eNB (gNB), an access point, etc. Each base station 105 may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to the specific geographic coverage area of ​​a base station, and / or a base station subsystem serving the coverage area, depending on the context in which the term "cell" is used.

[0042] A base station may provide communication coverage for a macro cell or a small cell (e.g., a pico cell or a femto cell) and / or other types of cells. Typically, a macro cell covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs that have a service subscription with a network provider. Typically, a small cell such as a pico cell covers a relatively small geographic area and may allow unrestricted access by UEs that have a service subscription with a network provider. Small cells such as femto cells typically cover a relatively small geographic area (e.g., a residence) and, in addition to unrestricted access, may also provide restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs for users in a home, etc.). A base station for a macro cell may be referred to as a macro base station. A base station for a small cell may be referred to as a small cell base station, a pico base station, a femto base station, or a home base station. In Figure 1In the example shown, base stations 105d and 105e are conventional macro base stations, while base stations 105-a-105c are macro base stations that implement one of 3-dimensional (3D) MIMO, full-dimensional (FD) MIMO, or massive MIMO. Base stations 105-a-105c utilize their higher dimensional MIMO capabilities to increase coverage and capacity using 3D beamforming in elevation and azimuth beamforming. Base station 105f is a small cell base station, which can be a home node or a portable access point. The base station can support one or more (e.g., two, three, four, etc.) cells.

[0043] The 5G network 100 may support synchronous or asynchronous operation. For synchronous operation, the base stations may have similar frame timing, and transmissions from different base stations may be approximately aligned in time. For asynchronous operation, the base stations may have different frame timing, and transmissions from different base stations may not be aligned in time.

[0044] UE 115 is scattered throughout the wireless network 100, and each UE can be stationary or mobile. UE can also be referred to as a terminal, a mobile station, a user unit, a station, etc. UE can be a cellular phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a tablet computer, a laptop computer, a cordless phone, a wireless local loop (WLL) station, etc. In one aspect, the UE can be a device including a universal integrated circuit card (UICC). In another aspect, the UE can be a device that does not include a UICC. In some aspects, a UE that does not include a UICC can also be referred to as an Internet of Everything (IoE) device or an Internet of Things (IoT) device. UE 115-a-115d is an example of a mobile smart phone type device that accesses the 5G network 100. UE can also be a machine that is specifically configured for connected communication, including machine type communication (MTC), enhanced MTC (eMTC), narrowband IoT (NB-IoT), etc. UE 115e-115k is an example of various machines that are configured for communication and access the 5G network 100. The UE may be able to communicate with any type of base station (whether macro base station, small cell, etc.). Figure 1 In the present invention, lightning (e.g., communication link) indicates wireless transmission between a UE and a serving base station (which is a base station designated to serve the UE on a downlink and / or uplink), or expected transmission between base stations, and backhaul transmission between base stations.

[0045] When operating in the 5G network 100, base stations 105-a-105c use 3D beamforming and collaborative spatial techniques (e.g., coordinated multipoint (CoMP) or multi-connectivity) to serve UEs 115-a and 115-b. Macro base station 105d performs backhaul communications with base stations 105-a-105c and small cell base station 105f. Macro base station 105d also transmits multicast services that are subscribed to and received by UEs 115c and 115d. Such multicast services may include mobile TV or streaming video, or may include other services for providing community information (such as weather emergencies or alerts, such as Amber alerts or gray alerts).

[0046] The 5G network 100 also supports mission-critical communications with ultra-reliable and redundant links for mission-critical devices, such as UE 115e, which is a drone. The redundant communication links with UE 115e include communication links from macro base stations 105d and 105e, and small cell base station 105f. Other machine-type devices, such as UE 115f (thermometer), UE 115g (smart meter), and UE 115h (wearable device), can communicate directly with base stations, such as small cell base station 105f and macro base station 105e, through the 5G network 100, or communicate with base stations in a multi-hop configuration by communicating with another user device that relays its information to the network, such as UE 115f transmitting temperature measurement information to smart meter UE 115g, which is then reported to the network through small cell base station 105f. The 5G network 100 may also provide additional network efficiency through dynamic, low-latency TDD / FDD communications, such as in a vehicle-to-vehicle (V2V) mesh network between UEs 115i-115k communicating with a macro base station 105e.

[0047] Figure 2 The base station 105 and the UE 115 (which may be Figure 1 A base station in the base station and Figure 1Block diagram of a design of a UE in a UE in a base station 105). At the base station 105, the transmit processor 220 can receive data from the data source 212 and control information from the controller / processor 240. The control information can be used for PBCH, PCFICH, PHICH, PDCCH, EPDCCH, MPDCCH, etc. The data can be used for PDSCH, etc. The transmit processor 220 can process the data and control information separately (e.g., encode and symbol map) to obtain data symbols and control symbols. The transmit processor 220 can also generate reference symbols, for example, for PSS, SSS, and cell-specific reference signals. The transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, and / or reference symbols (if applicable), and provide output symbol streams to modulators (MOD) 232a to 232t. Each modulator 232 can process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (eg, convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 232a through 232t may be transmitted via antennas 234a through 234t, respectively.

[0048] At the UE 115, antennas 252a to 252r can receive downlink signals from the base station 105 and provide received signals to demodulators (DEMODs) 254a to 254r, respectively. Each demodulator 254 can condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator 254 can further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. The MIMO detector 256 can obtain received symbols from all demodulators 254a to 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. The receive processor 258 can process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for the UE 115 to the data sink 260, and provide decoded control information to the controller / processor 280.

[0049] On the uplink, at the UE 115, a transmit processor 264 may receive and process data from a data source 262 (e.g., for PUSCH) and control information from a controller / processor 280 (e.g., for PUCCH). The transmit processor 264 may also generate reference symbols for reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by modulators 254a through 254r (e.g., for SC-FDM, etc.), and transmitted to the base station 105. At the base station 105, the uplink signal from the UE 115 may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information sent by the UE 115. The processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240.

[0050] The controller / processors 240 and 280 may direct the operation at the base station 105 and the UE 115, respectively. The controller / processor 240 and / or other processors and modules at the base station 105 may perform or direct the execution of various processes for the techniques described herein. The controller / processor 280 and / or other processors and modules at the UE 115 may also perform or direct the execution of various processes for the techniques described herein. Fig.12 and Fig.13 105 and UE 115. The memory 242 and 282 may store data and program codes for the base station 105 and the UE 115, respectively. The scheduler 244 may schedule the UE for data transmission on the downlink and / or uplink.

[0051] Wireless communication systems operated by different network operating entities (e.g., network operators) may share spectrum. In some instances, a network operating entity may be configured to use the entire designated shared spectrum for at least a period of time before another network operating entity uses the entire designated shared spectrum for a different period of time. Thus, to allow network operating entities to use the entire designated shared spectrum, and to mitigate interfering communications between different network operating entities, certain resources (e.g., time) may be divided and allocated to different network operating entities for certain types of communications.

[0052] For example, a network operating entity may be allocated certain time resources that are reserved for exclusive communication by the network operating entity using the entire shared spectrum. Other time resources may also be allocated to a network operating entity where the entity is given priority to use the shared spectrum for communication over other network operating entities. If a network operating entity with a priority does not utilize a time resource that is preferentially used by the network operating entity, other network operating entities may use the resource on an opportunistic basis. Additional time resources may be allocated for any network operator to use on an opportunistic basis.

[0053] Access to shared spectrum and arbitration of time resources between different network operating entities may be centrally controlled by a separate entity, autonomously determined through a predefined arbitration scheme, or dynamically determined based on interactions between wireless nodes of the network operator.

[0054] In some cases, the UE 115 and the base station 105 (in the 5g network 100) Figure 1 ) can operate in a shared radio frequency spectrum band that includes licensed or unlicensed (e.g., contention-based) spectrum. In the unlicensed frequency portion of the shared radio frequency spectrum band, the UE 115 or the base station 105 can generally perform a medium sensing process to compete for access to the spectrum. For example, the UE 115 or the base station 105 can perform a listen-before-talk (LBT) process (e.g., a clear channel assessment (CCA)) before communicating to determine whether the shared channel is available. CCA may include an energy detection process to determine whether there are any other active transmissions. For example, the device may infer that a change in a received signal strength indicator (RSSI) of a power meter indicates that the channel is occupied. In particular, signal power that is concentrated in a certain bandwidth and exceeds a predetermined noise floor may indicate another wireless transmitter. CCA may also include detection of a specific sequence that indicates channel usage. For example, another device may send a specific preamble before sending a data sequence. In some cases, the LBT process may include the wireless node adjusting its own backoff window based on the amount of energy detected on the channel and / or acknowledgement / negative acknowledgement (ACK / NACK) feedback for its own transmitted packets (as a proxy for collisions).

[0055] Generally, four categories of LBT procedures have been proposed to sense a shared channel for a signal indicating that the channel is occupied. In the first category (CAT 1 LBT), no LBT or CCA is applied to detect occupancy of a shared channel. The second category (CAT 2 LBT), which may also be referred to as abbreviated LBT, single LBT, or 25-μs LBT, specifies that a node performs CCA to detect energy above a predetermined threshold, or to detect a message or preamble occupying a shared channel. CAT 2 LBT performs CCA without using a random backoff operation, which results in its shortened length relative to the next category.

[0056] The third category (CAT 3LBT) performs CCA to detect energy or messages on a shared channel, but also uses random backoffs and fixed contention windows. Therefore, when a node initiates CAT 3LBT, it performs a first CCA to detect occupancy of the shared channel. If the shared channel is idle for the duration of the first CCA, the node can continue to transmit. However, if the first CCA detects a signal occupying the shared channel, the node selects a random backoff based on a fixed contention window size and performs an extended CCA. If the shared channel is detected to be idle during the extended CCA and the random number has been decremented to 0, the node can start transmitting on the shared channel. Otherwise, the node decrements the random number and performs another extended CCA. The node will continue to perform extended CCAs until the random number reaches 0. If the random number reaches 0 without any extended CCA detecting channel occupancy, the node can transmit on the shared channel. If in any extended CCA, the node detects channel occupancy, the node can reselect a new random backoff based on the fixed contention window size to start the countdown again.

[0057] The fourth category (CAT 4 LBT) (which may also be referred to as a complete LBT process) performs CCA using energy or message detection using random backoff and a variable contention window size. The sequence of CCA detection is performed similarly to the process of CAT 3 LBT, except that the contention window size is variable for the CAT 4 LBT process.

[0058] Using a medium sensing process to compete for access to unlicensed shared spectrum may result in inefficient communications. This may be particularly evident when multiple network operating entities (e.g., network operators) attempt to access shared resources. In the 5G network 100, the base station 105 and the UE 115 may be operated by the same or different network operating entities. In some examples, a single base station 105 or UE 115 may be operated by more than one network operating entity. In other examples, each base station 105 and UE 115 may be operated by a single network operating entity. Requiring each base station 105 and UE 115 of a different network operating entity to compete for shared resources may result in increased signaling overhead and communication latency.

[0059] Figure 3 An example of a wireless communication system 300 supporting different multi-TRP schemes according to aspects of the present disclosure is shown. In some examples, the wireless communication system 300 can implement aspects of the wireless communication system 100. For example, the wireless communication system 300 can include multiple UEs 115 and base stations 105. The base stations 105 can communicate with the UEs 115 using TRPs 305. Each base station 105 can have one or more TRPs 305. For example, the base station 105-a can include TRP 305-a and TRP 305-b, and the base station 105-b can include TRP 305-c. UE 115-a can communicate with the network using a single TRP 305, using multiple TRPs 305 corresponding to a single base station 105 (e.g., TRPs 305-a and 305-b at base station 105-a), or using multiple TRPs 305 corresponding to multiple different base stations 105 (e.g., TRP 305-a at base station 105-a and TRP 305-c at base station 105-b, where base stations 105-a and 105-b can be connected via a backhaul connection).

[0060] In a communication scheme including multiple TRPs 305, a single DCI message can configure communications for multiple TRPs 305. In an example, a base station 105-a can communicate using a first TRP 305-a and a second TRP 305-b. The base station 105-a can use TRP 305-a to send DCI to UE 115-a on PDCCH 310-a. DCI may include communication configuration information for a TCI state. The TCI state may determine whether the communication corresponds to a single TRP communication or multiple TRP communications. The TCI state may also indicate the type of communication scheme configured for the communication (e.g., TDM, FDM, SDM, etc.). If the TCI configuration is a TCI state, a TCI state may correspond to a single TRP communication. If the TCI configuration is multiple TCI states, multiple TCI states may correspond to communications with multiple TRPs. In some cases, the wireless communication system 300 may support up to M candidate TCI states for quasi-co-location (QCL) indication. Among the M candidates (e.g., 128 candidate TCI states), a subset of TCI states may be determined based on a medium access control (MAC) control element (CE). The MAC-CE may correspond to a certain number of candidate TCI states (e.g., 2 N (For example, 8 TCI states). N One of the TCI states may be dynamically indicated in a message (eg, DCI) using N bits.

[0061] The wireless communication system 300 can operate in a single TRP mode based on a single DCI or in a multi-TRP mode based on a single DCI. In such a mode, one DCI / PDCCH can schedule one PDSCH. In the case of multi-TRP operation based on a single DCI (SDM / FDM / TDM belongs to this category), the DCI on PDCCH 310-a schedules one PDSCH, but different layers (SDM) / different RBs (FDM) / different symbols (TDM) of the PDSCH come from different TRPs (PDSCH has multiple TCI states).

[0062] For example, a DCI on PDCCH 310-a may schedule a PDSCH 315-a transmission from TRP 305-a for a single TRP communication configuration. Alternatively, a DCI on PDCCH 310a may schedule a single PDSCH transmission from multiple TRPs 305. For example, one DCI may schedule a single PDSCH transmission that includes portions from TRP 305-a and portions from TRP 305-b, or one DCI may schedule a single PDSCH transmission that includes portions from TRP 305-a and portions from TRP 305-c for a multiple TRP communication configuration.

[0063] The wireless communication system 300 can also operate in a multi-TRP mode based on multiple DCIs. In the case of multi-TRP operation based on multiple DCIs, two DCIs schedule two corresponding PDSCHs from different TRPs (each DCI schedules one PDSCH, and the PDSCH has one TCI state), as shown in reference Figure 5D Further described.

[0064] For the purpose of QCL indication, the UE 115 may be configured with a list of different candidate TCI states. The QCL indication may also indicate a DMRS in the DCI corresponding to the PDSCH 315. Each TCI code point in the DCI may correspond to one or more TCI states (e.g., to one or more reference signal (RS) sets used to indicate a QCL relationship).

[0065] In the case where the network utilizes TRP 305 to communicate with UE 115, there may be multiple different schemes for utilizing it to communicate with TRP 305, whether in a single TRP configuration or in a multi-TRP configuration. The TRP communication scheme may be determined by a TCI state. The TCI state used for communication on PDSCH 315 may be indicated by one or more bits in the DCI, wherein the one or more bits indicate a TCI code point. The TCI code point in the DCI may correspond to one or more TCI states (e.g., one or two TCI states). If the TCI code point in the DCI indicates a TCI state, UE 115 is configured for single TRP operation. If the TCI code point in the DCI indicates two TCI states (and correspondingly, two QCL relationships), UE 115 is configured for multi-TRP operation. For example, if two TCI states are active within the TCI code point, each TCI state may correspond to a DMRS code division multiplexing (CDM) group.

[0066] In a first exemplary multi-TRP scheme, TRP 305 can communicate by utilizing SDM. In this case, different spatial layers can be sent from different TRP 305 on the same RB and symbol. Each TCI state can also correspond to a different DMRS port group. The DMRS ports in the DMRS CDM port group can be QCL. This allows UE 115 to estimate each channel separately. In SDM, each antenna port used on the downlink can belong to a different CDM group. Base station 105-a can use the antenna port field in the DCI to indicate the antenna port group.

[0067] The SDM scheme may include different TCI states within a single time slot, where the TCI states overlap in time, frequency, or both. Different spatial layer groups (which may correspond to different TCI states) may use the same modulation order. The use of the same modulation order by multiple groups may be signaled via a modulation and coding scheme (MCS). In some cases, the base station 105-a may indicate the MCS in the DCI. In the case where different spatial layer groups use different modulation orders, each modulation order in the different modulation orders may be signaled to the UE 115-a. Different DMRS port groups may correspond to different TRPs, QCL relationships, TCI states, or a combination thereof.

[0068] In other examples of multi-TRP schemes, the TRP 305 can communicate with the UE 115-a by utilizing an FDM and / or TDM communication scheme. In the FDM scheme, a set of RBs or a set of PRGs can correspond to a first TRP 305-a and a first TCI state, and a second set of RBs or PRGs can correspond to a second TRP 305-b and a second TCI state. The RBs allocated for each TRP can be different from each other, so that each TRP communicates on a specified set of RBs that is different from other sets of RBs (but may overlap in the same OFDM symbol). The frequency domain resource allocation field in the DCI can indicate a first set and a second set of RBs or PRGs. In some cases, the base station 105-a can use additional signaling in the DCI to indicate which RBs belong to the first set and which RBs belong to the second set. In some cases, the system may support a limited number of possibilities for allocating frequency resources to different TRPs (e.g., to reduce overhead).

[0069] In a TDM scheme, a similar probability table can be used to signal resource allocations for different TRPs. In this case, each TRP is assigned to a different set of OFDM symbols instead of a different set of RBs. Such a TDM scheme can support transmissions of TDM within a single time slot (e.g., a transmission time interval (TTI)). In some cases, a TDM scheme can implement time slot aggregation, where transmissions using different TCI states can be distributed across different time slots (e.g., TTIs). In time slot aggregation, transmissions on different TRPs can use separate rate matching, but can have the same or different modulation orders.

[0070] The network may communicate with UE 115-a using multiple TRPs and any of the communication schemes described herein. In addition, some communication schemes may include a combination of TDM and FDM, or cases where TDM may be in a timeslot aggregation configuration or not in a timeslot aggregation configuration. Schemes may also include some cases where rate matching is joint, and some cases where rate matching is different for different TRPs, and schemes may also include cases where different TRPs have the same or different modulation orders. Each scheme may also utilize different parameters included in the signaling, such as which DMRS ports to use (e.g., for an SDM scheme) or how to split RBs (e.g., for an FDM scheme).

[0071] In order to efficiently configure UE 115-a using TCI state information and corresponding TRP schemes, base station 105-a can generate bits for DCI messages and can send DCI on PDCCH 310-a. TRP 305-a can be used to send DCI messages to UE 115-a. UE 115-a can determine which scheme is configured for communication with TRP 305 based on one or more fields of the received DCI. DCI can have the same size in all communication schemes, and the format of the DCI field (e.g., the number of bits) can remain the same in all communication schemes.

[0072] Figure 4An example of a process flow 400 supporting different multi-TRP schemes according to various aspects of the present disclosure is shown. In some examples, the process flow 400 can implement various aspects of the wireless communication system 100 or 300. For example, the base station 105 and the UE 115 (e.g., the base station 105-c and the UE 115-b) can perform one or more of the processes described with reference to the process flow 400. The base station 105-c can communicate with the UE 115-b by sending and receiving signals via TRPs 405-a and 405-b. In other cases, TRPs 405-a and 405-b can correspond to different base stations 105. The following alternative examples can be implemented, in which some of the steps are performed in a different order than described or not performed at all. In some cases, the steps may include additional functions not mentioned below, or other steps may be added.

[0073] At 410, base station 105-c may generate DCI. Generating may include generating a first set of bits (e.g., a TCI field) that may indicate a set of TCI states for communicating with UE 115-b. Generating may also include generating a second set of bits (e.g., an antenna port field) that may indicate an antenna port set and, in some cases, a multi-TRP communication scheme for multi-TRP communication operations. In some cases, the second set of bits may additionally indicate a modulation order for at least one TCI state (e.g., a second TCI state for TRP 405-b), an RV for a TB for at least one TCI state (e.g., a second TCI state for TRP 405-b), or a combination thereof.

[0074] At 415, base station 105-c may send the generated DCI to UE 115-b. UE 115-b may receive the DCI from base station 105-c. The DCI may be transmitted from TRP 405-a on the PDCCH. The DCI may schedule an upcoming PDSCH transmission and may include other control information. The DCI may include an indication of the first set of bits and the second set of bits. For example, the DCI may include coded bits based on the first set of bits and the second set of bits.

[0075] At 420, the UE 115-b may read the TCI field (e.g., a first set of bits) received in the DCI message. The UE 115-b may use the first set of bits to identify one or more TCI states to communicate with the base station 105-c using one or more TRPs 405.

[0076] At 425, UE 115-b may determine the TCI state configuration based on reading the TCI field of the DCI. For example, the value in the TCI field (e.g., tci-PresentInDCI) may not be configured for the CORESET that schedules the PDSCH, or the value may correspond to a TCI state. In these cases, the communication scheme may be configured for one TRP. In other cases, the TCI field value may correspond to more than one TCI state. In these other cases, the communication may be configured to communicate with multiple TRPs.

[0077] UE 115-b may read the antenna port field of the DCI and may interpret the value of the field based on the determined TCI state configuration. For example, if UE 115-b determines that the TCI field indicates a single TCI state, UE 115-b may use a second set of bits to identify a set of antenna ports to be used for PDSCH transmission. At 430, UE 115-b may access a table (e.g., a table pre-configured in a memory or configured by a network) to determine one or more antenna ports corresponding to the antenna port field value.

[0078] Alternatively, if UE 115-b determines that the TCI field indicates multiple TCI states, UE 115-b may use a second set of bits to identify an antenna port set and a multi-TRP communication scheme based on identifying a set of TCI states. The second set of bits may include the same number of bits regardless of whether the field indicates only an antenna port set for single TRP operation or an antenna port set and a multi-TRP scheme for multi-TRP operation. At 430, UE 115-b may access a lookup table to determine the antenna port set and the multi-TRP scheme based on the antenna port field value. In some cases, UE 115-b may select a lookup table from a set of lookup tables, where the set may include one lookup table for single TRP operation and one lookup table for multi-TRP operation.

[0079] The lookup table may include information that maps both the antenna port set and the multi-TRP scheme to a second set of bits. In some cases, the lookup table that maps both the antenna port set and the multi-TRP communication scheme to the second set of bits may be pre-configured in a memory, and in some cases, it may be dynamically configured by the base station 105-c. The UE 115-b may identify the second antenna port set and the multi-TRP scheme based on the selected lookup table. In the lookup table for multi-TRP operation, together with an indication of the DMRS port, the table may include an indication of a multi-TRP scheme (e.g., SDM, FDM, TDM, or some combination thereof). The antenna port field lookup table may indicate that the value in the antenna port field of the DCI corresponds to a DMRS port set, where the DMRS port set also corresponds to a communication scheme (such as SDM or FDM). The antenna port field value may also indicate whether the rate matching is joint or separate. If the antenna port field value indicates that the FDM communication scheme is used, the table may additionally indicate the RB configuration of the TCI state for FDM, as shown in the "Possibility" column of the following table. If the lookup table is configurable by the network, the network may use Radio Resource Control (RRC) signaling to define the possible DMRS port sets and scheme types.

[0080] In some cases, UE 115-b may use a second set of bits to identify a modulation order for at least one TCI state in a set of possible TCI states. Different modulation orders may also be used in different TCI states. A first modulation order may be indicated in the modulation order field. The first modulation order may correspond to a first TCI state in a multi-TRP operation. A second modulation order may be indicated in one of the above tables based on the value received for the antenna port field. For example, a column in the antenna port field lookup table may indicate whether the modulation order corresponding to the second TCI state is the same as the modulation order indicated in the MCS (i.e., the modulation order used for the first TCI state). If the modulation order is different from the modulation order indicated in the MCS, the value of the modulation order used for the second TCI state may be indicated in the antenna port field. The value of the modulation order may be an absolute value or a relative value relative to the first modulation order.

[0081] If it is determined that the TCI state configuration indicates communication with a single TRP, then at 435, the UE 115-b can receive transmissions from one TRP 405-a. The UE 115-b can communicate with the single TRP 405-a based on the determined communication scheme.

[0082] If it is determined that the TCI state configuration indicates communication with multiple TRPs 405, then at 435, the UE 115-b can receive transmissions from one TRP 405-a and can also receive transmissions from another TRP 405-b at 440 (where, in some cases, 435 and 440 can correspond to the same time or OFDM symbol). The UE 115-b can communicate with the network via multiple configured TRPs 405 based on the determined communication scheme.

[0083] The systems and methods described herein are directed to enhanced SSB burst set determination and monitoring processes and enhanced beam reporting and monitoring processes. The enhanced functionality can implement enhanced or improved operations in multi-TRP mode. In some implementations, the systems and methods described herein implement enhanced SSB burst set determination and monitoring processes in multi-TRP mode based on multiple DCIs. Additionally or alternatively, the systems and methods described herein implement enhanced beam reporting and monitoring processes for multi-TRP mode. In a specific implementation, the systems and methods described herein implement enhanced SSB burst set determination and monitoring processes and enhanced beam reporting and monitoring processes. Therefore, such systems and methods can be used for URLLC and / or multi-TRP mode.

[0084] refer to Figures 5A-5D , showing examples of schematic diagrams for different multi-TRP modes. Figure 5A , a schematic diagram illustrating carrier aggregation is shown. Figure 5A One base station 105-a is depicted in communication with a UE 115-a. The base station 105-a may send data and control information; the base station 105 may use different equipment and / or settings (e.g., different frequencies) to send (and receive) information. Figure 5B , a schematic diagram illustrating dual connectivity is shown. Figure 5B Two base stations 105a and 105b are depicted in communication with a UE 115a. The UE 115-a communicates data with both base stations and controls information with one base station, the primary base station 105a.

[0085] Figure 5C and Figure 5D Depicts DCI-based operation for multi-TRP mode. Figure 5C Describes the single DCI mode of operation, and Figure 5D Describes the multi-DCI mode of operation. Figure 5C and Figure 5D , the system includes a first TRP 505a, a second TRP 505b, and a UE 105. The second TRP 505b may be included with the first TRP 505a (e.g., Figure 5Aof the first base station 105-a), or may be separate from the first TRP 505a (e.g., from Figure 5B The TRP of each base station in the first base station 105-a and the second base station 105b). Figure 5C In the first TRP 505a, downlink control information or DCI is sent, as shown by PDCCH 512. Figure 5C In the embodiment, the PDCCH 512 schedules a single PDSCH, and the PDSCH can be in multiple TCI states. For illustration, for any of SDM, FDM or TDM, the PDSCH indicates resources across two TCI states.

[0086] On the contrary, Figure 5D , both the first TRP 505a and the second TRP 505b send DCI, as shown by PDCCH 512 and 514. Each PDCCH 512 and 514 schedules the corresponding PDSCH 522, 524. The PDSCH resources can be overlapping, partially overlapping or non-overlapping. The PDSCH 522 and 524 can have different TCI states, such as by indication in the corresponding DCI / PDCCH 512 and 514 or by a default QCL. For PDCCH 512 and 515, different CORESETs and / or CORESET groups are used for the two TRPs 505a and 505b. Each CORESET and / or CORESET group can have a different TCI state.

[0087] The first TRP 505a and the second TRP 505b may have the same PCI, such as when the first TRP 505a and the second TRP 505b are intra-cell TRPs. For illustration, when the first TRP 505a and the second TRP 505b include or correspond to different panels or different remote radio heads (RRHs) of the same cell and / or base station, the first TRP 505a and the second TRP 505b may have the same PCI. Alternatively, the first TRP 505a and the second TRP 505b may have different PCIs, such as when the first TRP 505a and the second TRP 505b are inter-cell TRPs. For illustration, when the first TRP 505a and the second TRP 505b are included in different cells and base stations, they have different PCIs. In normal operation, the UE knows only one PCI (i.e., the first PCI acquired by the UE during cell search).

[0088] refer to Fig. 6A and 6B, an example of an SSB burst set is shown. An SSB burst set includes multiple SSBs (e.g., multiple SSB indexes). An SSB burst set may be included in a radio frame (e.g., in a specific portion thereof). The position of an SSB burst set in a radio frame may be determined based on a half-frame bit of an SSB burst set or may depend on a half-frame bit of an SSB burst set. In addition, depending on the period of the SSB, an SSB burst set may be repeated in the same radio frame and / or other radio frames.

[0089] Each SSB index of an SSB burst set includes 4 symbols, for example, 4 OFDM symbols including PSS, SSS, and PBCH (or MIB). An SSB burst set may include a different number of SSB indices (e.g., potential SSBs), and the total possible number of SSBs may correspond to the frequency range used for transmission of a radio frame and / or the SCS of a radio frame. For example, the maximum number of SSBs within a 5ms SS burst set may be 4 for frequencies below 3 GHz, 8 for frequencies between 3-7 GHz, or 64 for FR2 (e.g., millimeter wave frequencies). The SSBs may be transmitted using different beams (e.g., different beam / transmission parameters). In addition, an SSB burst set defines possible SSB positions, since any SSB / SSB position subset within the possible SSB positions of an SSB burst set may be used for actual SSB transmission. Positions / SSBs are indexed by or using SSB indices, such as 0, 1, ..., 63 (for a maximum number of SSBs of 64).

[0090] The time domain position (time slot / OFDM symbol) of each SSB is determined according to one or more stored patterns (within a time period of half a radio frame, such as the first 5ms or the second 5ms of a radio frame). A specific pattern in the pattern set may be determined based on the subcarrier spacing. The subcarrier spacing may depend on the frequency or frequency range. For example, for FR1, the SCS may be 15 or 30KHz, while for FR2, the SCS may be 120 or 240KHz.

[0091] SSBs and SSB burst sets are typically used for cell search and connection operations and processes. For example, during cell search, the UE detects an SSB (a block or index). The UE determines the PCI based on the PSS and SSS of the SSB. The UE determines the SFN, SSB index value, and half-frame bits based on the PBCH or MIB of the SSB. The UE also receives a SIB1 message or information, and determines the period of the SSB burst set based on the S1B1 message or information. The UE determines the first SSB burst set information based on the above information; the first SSB burst set information includes the location and timing of the index of the first SSB burst set. Therefore, the UE can now monitor the SSBs within the SSB burst set of the first PCI.

[0092] exist Fig. 6A and 6B In FIG. 1 , a block diagram illustrating a radio frame and its SSB positions is shown. Fig. 6A and Figure 6B In the example of , the SSB burst set is shown in the first half of the radio frame (eg, the first 5 ms of a 20 ms radio frame). Fig. 6A shows a first example SSB burst set, and Figure 6B A second example SSB burst set is shown.

[0093] refer to Fig. 6A , the SSB burst set 600 includes multiple SSBs (such as multiple SSB indexes). Fig. 6A In the example of , the SSB burst set 600 has 64 SS blocks or SSB indices, a period of 20 ms, a subcarrier spacing (SCS) of 120 kHz, and a half-frame bit of 0 (e.g., indicating that the SSB is located in the first half of the radio frame).

[0094] exist Fig. 6A , three block diagrams 612, 614, 616 are shown. The first block diagram 612 shows a subframe 622 of a radio frame in which the SSB burst set 600 may be located. The second block diagram 614 shows the time slots / symbols in which the SSB blocks of the SSB burst set 600 within the identified subframe 622 of the first block diagram 612 may be located, i.e., time slots 1 and 2. The third block diagram 616 shows the symbols in which the SSB blocks of the SSB burst set 600 within the identified time slots 632 and 634 may be located. Fig. 6A As shown in , four SSB indexes are depicted. The first SSB index (index 0) is located in symbols five to eight (symbols 4-7), the second SSB index (index 1) is located in symbols nine to twelve (symbols 8-11), the third SSB index (index 2) is located in symbols seventeen to twenty (symbols 16-19), and the fourth SSB index (index 3) is located in symbols twenty-one to twenty-four (symbols 20-23).

[0095] refer to Figure 6B , SSB burst set 650 includes multiple SSBs (such as multiple SSB indexes). Figure 6B In the example of , SSB burst set 650 has 64 SS blocks or SSB indices, a period of 20 ms, a subcarrier spacing (SCS) of 240 kHz, and a half-frame bit of 0 (eg, in the first half of the radio). Fig. 6A compared to, Figure 6B The SSB burst set 650 has double the SCS, and therefore, each time slot is represented as Fig. 6A Half the amount of time. Figure 6BIn the example above, the spacing or time alignment of the SSB indices is the same. Figure 6B In the example of , more SSB indices are transmitted per time slot and more symbols are used between SSB chunks.

[0096] Figure 7 An example of a wireless communication system 700 that supports enhanced SSB detection and monitoring according to various aspects of the present disclosure is shown. In some examples, the wireless communication system 700 can implement various aspects of the wireless communication system 100. For example, the wireless communication system 700 may include a network entity 705 (e.g., a base station 105), a UE 115, and an optional second network entity 703 (e.g., a second base station 105). When different TRPs have different PCIs, the enhanced SSB detection and monitoring operations can implement multi-TRP operations based on a single DCI or multiple DCIs, thereby increasing throughput and reducing latency. Such increased throughput and reduced latency can implement URLLC, and can be used to increase reliability, and may increase throughput when there is interference or blocking between the UE and a particular TRP.

[0097] The network entity 705 and the UE 115 may be configured to communicate via a frequency band such as: FR1 with a frequency of 410 to 7125 MHz or FR2 with a frequency of 24250 to 52600 MHz for mmWave. Note that for some data channels, the subcarrier spacing (SCS) may be equal to 15, 30, 60, or 120 kHz. The network entity 705 and the UE 115 may be configured to communicate via one or more component carriers (CCs) such as a representative first CC 781, a second CC 782, a third CC 783, and a fourth CC 784. Although four CCs are shown, this is for illustration only, and more or less than four CCs may be used. One or more CCs may be used to transmit a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical uplink control channel (PUCCH), or a physical uplink shared channel (PUSCH). In some implementations, such transmissions may be scheduled by one or more periodic grants and may correspond to configuration grants of one or more periodic grants.

[0098] Each periodic grant may have a corresponding configuration, such as configuration parameters / settings. The periodic grant configuration may include a configuration grant (CG) configuration and settings. Additionally or alternatively, one or more periodic grants (e.g., their CGs) may have or be assigned a CC ID (e.g., an expected CC ID).

[0099] Each CC may have a corresponding configuration, such as a configuration parameter / setting. The configuration may include bandwidth, bandwidth portion, HARQ process, TCI state, RS, control channel resources, data channel resources, or a combination thereof. Additionally or alternatively, one or more CCs may have or be assigned a cell ID, a bandwidth portion (BWP) ID, or both. The cell ID may include a unique cell ID for the CC, a virtual cell ID, or a specific cell ID of a specific CC in multiple CCs. Additionally or alternatively, one or more CCs may have or be assigned a HARQ ID. Each CC may also have corresponding management functions, such as beam management, BWP switching functions, or both. In some implementations, two or more CCs are quasi-co-located so that the CCs have the same beam and / or the same symbol.

[0100] In some implementations, the control information may be transmitted via the network entity 705 and the UE 115. For example, the control information may be transmitted using a MAC-CE transmission, an RRC transmission, a DCI transmission, another transmission, or a combination thereof.

[0101] UE 115 includes a processor 702, a memory 704, a transmitter 710, a receiver 712, an encoder 713, a decoder 714, an SSB tracker 715, and antennas 252a-r. The processor 702 may be configured to execute instructions stored in the memory 704 to perform the operations described herein. In some implementations, the processor 702 includes or corresponds to the controller / processor 280, and the memory 704 includes or corresponds to the memory 282. The memory 704 may also be configured to store a second PCI 706, a second SSB burst set information 708, a second SSB configuration 742, or a combination thereof, as further described herein.

[0102] The second PCI 706 corresponds to a PCI of the network entity 705, which corresponds to a different PCI than that acquired during the cell search (e.g., different from the first PCI). The second SSB burst set 708 information includes or corresponds to timing and position data for indicating possible SSB index locations. The second SSB configuration 742 includes or corresponds to an RRC configuration for indicating what IE and / or message indicates the second SSB index.

[0103] The transmitter 710 is configured to send data to one or more other devices, and the receiver 712 is configured to receive data from one or more other devices. For example, the transmitter 710 can send data via a network (such as a wired network, a wireless network, or a combination thereof), and the receiver 712 can receive data via a network. For example, the UE 115 can be configured to send and / or receive data via the following: a direct device-to-device connection, a local area network (LAN), a wide area network (WAN), a modem-to-modem connection, the Internet, an intranet, an extranet, a cable transmission system, a cellular communication network, any combination of the above, or any other communication network now known or later developed in which two or more electronic devices are allowed to communicate. In some implementations, the transmitter 710 and the receiver 712 can be replaced with a transceiver. Additionally or alternatively, the transmitter 710, the receiver 712, or both may include or correspond to the reference Figure 2 One or more components of UE 115 are described.

[0104] The encoder 713 and the decoder 714 may be configured to perform encoding and decoding, respectively (e.g., joint encoding and joint decoding). The SSB tracker 715 may be configured to detect and monitor a second SSB burst set. For example, the SSB tracker 715 is configured to determine the position and timing of the SSB index of the second SSB burst set (e.g., a burst set other than the burst set found during the cell search).

[0105] The network entity 705 includes a processor 730, a memory 732, a transmitter 734, a receiver 736, an encoder 737, a decoder 738, and antennas 234a-t. The processor 730 may be configured to execute instructions stored in the memory 732 to perform the operations described herein. In some implementations, the processor 730 includes or corresponds to the controller / processor 240, and the memory 732 includes or corresponds to the memory 242. The memory 732 may be configured to store the second PCI 706, the second SSB burst set information 708, the second SSB configuration 742, or a combination thereof, similar to the UE 115 and as further described herein.

[0106] The transmitter 734 is configured to send data to one or more other devices, and the receiver 736 is configured to receive data from one or more other devices. For example, the transmitter 734 can send data via a network (e.g., a wired network, a wireless network, or a combination thereof), and the receiver 736 can receive data via the network. For example, the network entity 705 can be configured to send and / or receive data via: a direct device-to-device connection, a local area network (LAN), a wide area network (WAN), a modem-to-modem connection, the Internet, an intranet, an extranet, a cable transmission system, a cellular communication network, any combination of the above, or any other communication network now known or later developed that allows two or more electronic devices to communicate. In some implementations, the transmitter 734 and the receiver 736 can be replaced with a transceiver. Additionally or alternatively, the transmitter 734, the receiver 736, or both may include or correspond to the reference Figure 2 One or more components of the described network entity 705. The encoder 737 and the decoder 738 may include the same functionality as described with reference to the encoder 713 and the decoder 714, respectively.

[0107] During operation of the wireless communication system 700, the network entity 705 may determine that the UE 115 has enhanced SSB detection and monitoring capabilities. For example, the UE 115 may send a message 748 including enhanced SSB detection and monitoring 792. The indicator 792 may indicate enhanced SSB detection and monitoring capabilities or a specific type of enhanced SSB detection and monitoring (e.g., for enhanced SSB detection and monitoring based on a multi-DCI mode). In some implementations, the network entity 705 sends control information to indicate to the UE 115 that enhanced SSB detection and monitoring will be used. For example, in some implementations, the message 748 (or another message, such as a response or trigger message) is sent by the network entity 705.

[0108] exist Figure 7 In the example of , the network entity 705 sends a configuration transmission 750. The configuration transmission 750 includes or indicates an RRC configuration for an information element (IE) or message, such as a second SSB configuration 742. The second SSB configuration 742 may indicate that the IE or message will indicate an SSB index value for a second SSB burst set.

[0109] The network entity 705 sends a downlink transmission 752 to the UE 115, and the downlink transmission 752 indicates or includes a specific SSB index (e.g., an index value) of the second SSB burst set. The UE 115 determines the second SSB burst set based on the downlink transmission 752. For example, the SSB tracker 715 performs second SSB burst set detection and monitoring operations. For illustration, the SSB tracker 715 determines the specific SSB index of the second SSB burst set based on the transmissions 750, 752. In some implementations, the UE 115 may send an uplink transmission 754 in response to or based on the determined and monitored second SSB burst set. For example, the UE 115 may send the uplink transmission 754 using a specific SSB index as a reference signal for QCL information for a TCI state, spatial relationship information for an SRS or PUCCH, or a path loss reference for uplink power control for a PUCCH, PUSCH, or SRS.

[0110] In addition, the network entity 705 sends another downlink transmission (e.g., a second downlink transmission 762) to the UE 115, and the other downlink transmission indicates or includes SSB determination information, that is, information based on which the UE can determine the SSB position and index of the second SSB burst set. The second downlink transmission 762 can be sent before the first downlink transmission 752. The second downlink transmission 762 may include or correspond to an RRC message. In some implementations, multiple RRC messages may be used to send the SSB determination information. The SSB determination information may include or indicate a second PCI, a half-frame bit, and a period. In some implementations, the information may include or indicate. The SSB determination information may also include a frame number, a system frame number (SFN), SSB-SCS, ss-PBCH-BlockPower, a frequency domain position, or a combination thereof.

[0111] therefore, Figure 7 Enhanced SSB detection and monitoring operations for a UE are described. Using the enhanced SSB detection and monitoring operations can achieve improvements when operating in a multi-TRP mode and / or in a multi-DCI mode. Performing the enhanced SSB detection and monitoring operations enables the network to reduce latency and improve reliability. The improved performance can improve the throughput for communications on the network and enable the use of millimeter wave frequency ranges and URLLC modes.

[0112] Figures 8A-8F It is shown that the RRC (eg, Figure 7 Parameters or information elements (IEs) configured in RRC 750) for implementing enhanced SSB detection and monitoring. Figures 8A-8FEach of the figures in FIG. 4 depicts a parameter or information element (IE) that has been modified to include a parameter “ssb_secondTRP SSB-Index,” which may be used to indicate an SSB index value (eg, 0-63) of a second SSB burst set for a second PCI. Figures 8A-8C shows a non-power control example, while Figures 8D-8F A power control example is shown.

[0113] Fig. 8A QCL-Info IE is shown. The QCL-Info IE may be included in the TCI Status IE, for example in the qcl-Type1 or qcl-Type1 field or a parameter thereof. Figure 8B The SRS-SpatialRelationInfo IE is shown. Figure 8C PUCCH-SpatialRelationInfo IE is shown. Fig.8D PUCCH-PathlossReferenceRS IE is shown. Fig. 8E The PUSCH-PathlossReferenceRS IE is shown. Figure 8F The pathlossReferenceRS IE of SRS-ResourceSet is shown.

[0114] Therefore, the SSB index information (e.g., index value) of the second SSB burst set for the second PCI may be sent to the UE via RRC, or may be configured via RRC that is sent through a specific type of message and then sent via a downlink message.

[0115] In addition to or in an alternative to enhancements for SSB detection and monitoring, the network may include enhanced beam reporting and management functionality as described herein. In conventional beam management operations, the UE is signaled to report or feedback multiple beam management reports (e.g., multiple CSI reports). Each CSI report corresponds to a reference signal value for a particular beam. For example, each CSI report indicates a particular beam and a specific reference signal value for that beam. The network entity may then determine subsequent operations based on the beam management report. In conventional beam management operations, the UE reports the X strongest beams, where X corresponds to the number of feedback reports required by the network. For illustration, the UE reports the X highest or strongest RSRPs for a set of beams.

[0116] However, in normal operation, multiple adjacent beams and / or beams pointing in one direction / angle typically have the strongest signal. In addition, when operating in multi-TRP mode, reports may not be fed back for beams corresponding to one or more of the multiple TRPs. For illustration purposes, the strongest beams may all correspond to a single TRP, and the UE only provides CSI reports for one TRP. Therefore, the network has no information to determine which beams are used by the other TRPs.

[0117] In various aspects described herein, beam sets may be grouped, for example, by a network entity. These groups may include or correspond to different angles, different TRPs, different base stations / serving cells, or a combination thereof. The grouping may be signaled by the network entity via a reference signal (e.g., by NZP-CSI-RS, SSB, and / or TCI status). For example, the network entity groups beams by NZP-CSI-RS, SSB, and / or TCI status, and thus (indirectly) indicates the grouping of beams when sending one or more of the NZP-CSI-RS, SSB, and / or TCI status.

[0118] The grouping may be used by the UE to determine which reports / beams to feed back. For example, the UE may determine to report / feed back at least one report from each group, report / feed back at least one report from N groups, report / feed back at least one report from at least two groups, etc. Additionally or alternatively, the UE may further determine which reports to report / feed back based on one or more thresholds. For example, one or more value thresholds, one or more reporting thresholds, one or more group thresholds, or a combination thereof may be used to determine which beams to report.

[0119] Fig. 9 An example of a wireless communication system 900 that supports enhanced beam management and reporting operations according to various aspects of the present disclosure is shown. In some examples, the wireless communication system 900 can implement various aspects of the wireless communication system 100. For example, the wireless communication system 900 may include a network entity 905 (e.g., a base station 105), a UE 115, and an optional second network entity 903 (e.g., a second base station 105). The enhanced beam management and reporting operations can achieve reduced overhead and latency, and thus can increase throughput and reduce latency. Such increased throughput and reduced latency can achieve URLLC, and can be used to increase reliability, and may increase throughput when there is interference or blocking between the UE and a specific TRP.

[0120] The network entity 905 and the UE 115 may be configured as described in reference Figure 7904, a transmitter 910, a receiver 912, an encoder 913, a decoder 914, a beam manager 915, a report manager, and antennas 252a-r. The processor 902 may be configured to execute instructions stored in the memory 904 to perform the operations described herein. In some implementations, the processor 902 includes or corresponds to the controller / processor 280, and the memory 904 includes or corresponds to the memory 282. The memory 904 may also be configured to store beam grouping data 906, report configuration 908, report quantity 942, threshold 944, or a combination thereof, as further described herein.

[0121] Beam grouping data 906 may include or correspond to data indicating a particular group to which a beam belongs. Report configuration 908 may include or correspond to data indicating information about a report (e.g., type of report, threshold for reporting, etc.). One particular reporting configuration is the number of requested reports 942. An exemplary report includes a single beam identifier and a corresponding report value (e.g., RSRP). Threshold 944 includes one or more thresholds for determining which beams to report, e.g., an RSRP threshold, a group threshold, etc.

[0122] The transmitter 910 is configured to send data to one or more other devices, and the receiver 912 is configured to receive data from one or more other devices. For example, the transmitter 910 can send data via a network (e.g., a wired network, a wireless network, or a combination thereof), and the receiver 912 can receive data via the network. For example, the UE 115 can be configured to send and / or receive data via: a direct device-to-device connection, a local area network (LAN), a wide area network (WAN), a modem-to-modem connection, the Internet, an intranet, an extranet, a cable transmission system, a cellular communication network, any combination of the above, or any other communication network now known or later developed in which two or more electronic devices are allowed to communicate. In some implementations, the transmitter 910 and the receiver 912 can be replaced with a transceiver. Additionally or alternatively, the transmitter 910, the receiver 912, or both may include or correspond to the reference Figure 2 One or more components of UE 115 are described.

[0123] The encoder 913 and the decoder 914 may be configured to perform encoding and decoding (eg, joint encoding and joint decoding), respectively. The beam manager 915 is configured to determine beam groups and value information, and the reporting manager 916 is configured to determine which beams to report.

[0124] The network entity 905 includes a processor 930, a memory 932, a transmitter 934, a receiver 936, an encoder 937, a decoder 938, and antennas 234a-t. The processor 930 may be configured to execute instructions stored in the memory 932 to perform the operations described herein. In some implementations, the processor 930 includes or corresponds to the controller / processor 240, and the memory 932 includes or corresponds to the memory 242. The memory 932 may be configured to store the beam grouping data 906, the report configuration 908, the report quantity 942, the threshold 944, or a combination thereof, similar to the UE 115, and as further described herein.

[0125] The transmitter 934 is configured to send data to one or more other devices, and the receiver 936 is configured to receive data from one or more other devices. For example, the transmitter 934 can send data via a network (e.g., a wired network, a wireless network, or a combination thereof), and the receiver 936 can receive data via the network. For example, the network entity 905 can be configured to send and / or receive data via: a direct device-to-device connection, a local area network (LAN), a wide area network (WAN), a modem-to-modem connection, the Internet, an intranet, an extranet, a cable transmission system, a cellular communication network, any combination of the above, or any other communication network now known or later developed in which two or more electronic devices are allowed to communicate. In some implementations, the transmitter 934 and the receiver 936 can be replaced with a transceiver. Additionally or alternatively, the transmitter 934, the receiver 936, or both may include or correspond to the reference Figure 2 One or more components of the described network entity 905. The encoder 937, the decoder 938 and the merger 939 may include the same functionality as described with reference to the encoder 913 and the decoder 914, respectively.

[0126] During operation of the wireless communication system 900, the network entity 905 may determine that the UE 115 has enhanced beam management and reporting capabilities. For example, the UE 115 may send a message 948 including an enhanced beam management and reporting indicator 992. The indicator 992 may indicate enhanced beam management and reporting capabilities or a specific type of enhanced beam management and reporting capabilities (e.g., enhanced beam management and reporting for multi-TRP mode). In some implementations, the network entity 905 sends control information to indicate to the UE 115 that enhanced beam management and reporting will be used. For example, in some implementations, the message 948 (or another message, such as a response or trigger message) is sent by the network entity 905.

[0127] The network entity 905 sends a report configuration transmission 950 (e.g., an RRC or MAC CE) to the UE 115. The report configuration transmission 950 includes report configuration information 908 (e.g., an indication of the number of reports 942). After the transmission of the message 948 (e.g., a configuration message such as an RRC message or a MAC CE) and / or the LCP configuration transmission 950, a transmission may be scheduled by the network entity 905, the UE 115, or both. Fig. 9 In the example of FIG. 1 , the network entity 905 sends a first downlink transmission 952 to the UE 115. The first downlink transmission 952 includes or indicates beam grouping data 906, for example, via NZP-CSI-RS, CSI-SSB, and / or TCI.

[0128] In response to transmissions 950 and / or 952, UE 115 (e.g., its beam manager 915) determines beam reporting values, such as RSRP values ​​for each of the plurality of beams. UE 115 (e.g., its reporting manager 916) determines which beam reporting values ​​to include in a report to send to network entity 905. UE 115 may perform a reference Figures 11A-11C One or more of the operations described above may be performed to determine which reports to send. UE 115 may send reports in multiple uplink transmissions. Fig. 9 As shown in , UE 115 sends uplink transmissions 954, 964. Each uplink transmission may include one or more reports, such as a beam identifier and a corresponding RSRP value for each beam included. Fig. 9 In the specific example of , the uplink transmission 954 includes a first beam report for the beams of the first group and a second beam report for the beams of the second group. Thus, it is ensured that the network entity 905 receives a more diverse beam distribution in the reports.

[0129] therefore, Fig. 9 Enhanced beam management and reporting operations are described. Improvements in single TRP mode and multi-TRP mode can be achieved using enhanced beam management and reporting operations. Performing enhanced beam management and reporting operations enables the network to reduce latency and improve reliability. Improving performance can improve throughput for communications on the network and enable the use of millimeter wave frequency ranges and URLLC mode.

[0130] refer to Figures 10A-10C , depicts a schematic diagram for illustrating beam grouping. Fig. 10A corresponds to the beam grouping for a single TRP, and Fig. 10B and Fig. 10C Corresponds to beam grouping for multiple TRPs. Figures 10A-10CIn FIG. 1 , beam patterns are shown in yellow and blue, with dotted lines indicating beam groups. A yellow beam represents a wide beam pattern (e.g., for SSB transmission), and a blue beam represents a narrow beam pattern (e.g., for CSI-RS transmission). Figures 10A-10C In the embodiment, the beams are grouped by SSB and / or CSI-RS, but in other implementations, the beams can be grouped as described above.

[0131] refer to Fig. 10A , showing an example of a beam set for a single TRP. Fig. 10A In FIG. 1 , TRP 1005a includes two sets of beams 1012 and 1014. Fig. 10A As shown in the example of , group 1 1012 includes 1 SSB and 3 CSI-RS beams (i.e., SSB 0 and CSI-RS0-2), and group 2 1014 includes 2 SSBs and 1 CSI-RS beam (i.e., SSB 1-2 and CSI-RS RS 3). When responding to a report request (e.g., Fig. 9 950 and / or 952), UE 115 may report at least one beam from group 1 and at least one beam from group 2 1014. Thus, UE 115 may better indicate to the network how to overcome blocking, for example, blocking 1032 or 1034.

[0132] refer to Fig. 10B , showing an example of beam groups for multiple TRPSs. Although each TRP is shown as having one group, one or more of the TRPs may have additional groups, such as Fig. 10A and 10C As shown in .

[0133] exist Fig. 10B , the first TRP 1005a includes or corresponds to the first set of beams 1012, and the second TRP 1005b corresponds to the second set of beams 1014. Fig. 10B As shown in the example of , group 1 1012 includes 4 SSBs and 8 CSI-RS beams (i.e., SSB 0-3 and CSI-RS 0-7), and group 2 1014 includes 4 SSBs and 8 CSI-RS beams (i.e., CSI-RS 8-15). In such an implementation where the first TRP 1005a and the second TRP 1005b correspond to the same base station and have the same PCI, the SSB index of group 2 1014 may also be 0-3. In such other implementations where the first TRP 1005a and the second TRP 1005b correspond to different base stations and have different PCIs, the SSB index of group 2 1014 is different, such as 4-7. When responding to a report request (e.g., Fig. 9950 and / or 952), UE 115 may report at least one beam from group 1 1012 and at least one beam from group 2 1014. Thus, UE 115 may better indicate to the network how to overcome the blocking (e.g., blocking 1032 or 1034).

[0134] refer to Fig. 10C , showing another example of a beam group for a single TRP. Fig. 10B In contrast, the first TRP 1005a of the plurality of TRPs has a plurality of groups. Fig. 10C As shown in the example of , group 1 1012 includes 1 SSB and 3 CSI-RS beams (i.e., SSB 0 and CSI-RS 0-2), and group 2 1014 includes 2 SSBs and 1 CSI-RS beam (i.e., SSB 1-2 and CSI-RS R S3). When responding to a report request (e.g., Fig. 9 950 and / or 952), UE 115 may report at least one beam from group 1 1012 and at least one beam from group 2 1014.

[0135] exist Fig. 10C In the embodiment, the first TRP 1005a includes or corresponds to multiple groups of beams (e.g., the first group of beams 1012 and the second group of beams 1014), and the second TRP 1005b corresponds to the third group of beams 1016. Fig. 10C As shown in the example of , group 1 1012 and group 2 1014 include 4 SSBs and 8 CSI-RS beams (i.e., SSB 0-3 and CSI-RS 0-7), and group 3 1016 includes 4 SSBs and 8 CSI-RS beams (i.e., CSI-RS 8-15). In such implementations where the first TRP 1005a and the second TRP 1005b correspond to the same base station and have the same PCI, the SSB index of group 3 1016 may also be 0-3. In such other implementations where the first TRP 1005a and the second TRP 1005b correspond to different base stations and have different PCIs, the SSB index of group 3 1016 is different, such as 4-7. When responding to a report request (e.g., Fig. 9 950 and / or 952), UE 115 may report at least one beam from group 1 1012 and at least one beam from group 2 1014. Thus, UE 115 may better indicate to the network how to overcome the blocking (e.g., blocking 1032 or 1034). Additionally or alternatively, when responding to a report request (e.g., Fig. 9When at least one beam from group 1 1012 and / or group 2 1014 and at least one beam from group 3 1016 are used (e.g., 950 and / or 952), the UE 115 can report them. Thus, the UE 115 can better indicate to the network how to overcome blockages (e.g., blockages 1034 or 1036).

[0136] Reference Figures 11A-11C , which depicts a schematic diagram for illustrating an exemplary beam selection method. Fig.11A Corresponds to a method for processing multiple reports for each group or some groups, and Fig. 11B and Fig. 11C Corresponds to a method for processing multiple reports across all groups (e.g., for all groups).

[0137] Reference Fig.11A , which shows a first beam selection method. In the first beam selection method, the UE determines the number of beams N for at least one group. For example, the report can indicate the number of beams (e.g., maximum or minimum) for a specific group, e.g., 3 beams (N_I, 3_2) for group 2. As another example, the report can indicate the number of beams (e.g., maximum or minimum) for multiple groups, e.g., a subset of groups or all groups. For illustration purposes, the report can indicate 2 beams for odd-numbered groups, 3 beams for even-numbered groups, or 1 beam for each group, as illustrative non-limiting examples. In Fig.11A , a specific example of a set of exemplary report data / values for the first group and the second group is shown.

[0138] Reference Fig. 11B , which shows a second beam selection method. In the second beam selection method, the UE determines the number of beams N across / for all groups. The UE can determine whether the number of beams N is greater than or equal to the number of groups G. If the number of beams is greater than or equal to the number of groups G (N > G or N = G), then at least one beam corresponding to the maximum RSRP value within each group is reported; the remaining beams (N - G) correspond to the beam with the maximum RSRP from the remaining beams, as shown in Fig. 11B (left side).

[0139] If the number of beams N is less than the number of groups G (N < G), then the beam with the maximum RSRP within each group is found, and the top N groups are determined based on the maximum RSRP within the group, and the beams of these groups are reported, as shown in Fig. 11B (right side).

[0140] Reference Fig. 11C, showing a third beam selection method. In the third beam selection method, one or more threshold values ​​are also used to determine which beams to report. For example, similar to the second selection method, the report request can indicate the number of beams across several groups of the plurality of groups or across all groups. The UE determines the maximum RSRP. The UE then uses a threshold value (e.g., an incremental threshold value) to determine a subset of all beam values ​​within the threshold value compared to the maximum RSRP value. The UE then performs the second beam selection method based on the determined subset of beam values, such as Fig. 11C as shown in .

[0141] As another example, a different threshold (eg, a minimum threshold) is used, and the UE determines the top N highest values ​​that meet the threshold.The UE then performs the first beam selection method based on the determined subset of beam values.

[0142] Fig.12 is a block diagram illustrating example blocks executed by a UE configured according to one aspect of the present disclosure. Fig.14 As shown in , the example blocks will also be described with respect to UE 115. Fig.14 1 is a block diagram illustrating a UE 115 configured according to one aspect of the present disclosure. The UE 115 includes a Figure 2 115. For example, the UE 115 includes a controller / processor 280 that operates to execute logic or computer instructions stored in a memory 282 and to control the components of the UE 115 that provide the features and functions of the UE 115. Under the control of the controller / processor 280, the UE 115 sends and receives signals via the wireless radio units 1400a-r and the antennas 252a-r. Figure 2 As shown for UE 115 in FIG. 1 , wireless radio units 1400a-r include various components and hardware, including modulator / demodulators 254a-r, MIMO detector 256, receive processor 258, transmit processor 264, and TX MIMO processor 266. Fig.14 As shown in the example, memory 282 stores multi-TRP logic 1402, SSB tracking logic 1403, beam management logic 1404, SSB data 1405 and threshold data 1406.

[0143] At block 1200, a mobile communication device (e.g., UE) determines first synchronization signal block (SSB) burst set information corresponding to a first physical cell identifier (PCI). The UE (e.g., UE 115) receives a downlink transmission (e.g., a first downlink transmission, such as DCI, RRC, MAC CE) via wireless radio units 1400a-r and antennas 252a-r.

[0144] The UE 115 may execute the multi-TRP logic 1402 stored in the memory 282 under the control of the controller / processor 280. The execution environment of the multi-TRP logic 1402 provides functionality for the UE 115 to define and execute multi-TRP procedures. In addition, the UE 115 may execute one or more of the SSB tracking logic 1403 and / or the beam management logic 1404. The execution environment of the multi-TRP logic 1402 (and optionally the SSB tracking logic 1403 and / or the beam management logic 1404) defines different multi-TRP procedures, such as determining a multi-TRP mode, determining an SSB tracking mode, determining a second SSB burst set, determining a beam report group, and the like. For illustration, the UE 115 may determine a first SSB burst set during a cell search operation.

[0145] At block 1201, UE 115 determines second SSB burst set information corresponding to a second PCI, the second PCI being different from the first PCI. UE 115 determines the second SSB burst set based on the RRC configuration, such as under the execution logic of multi-TRP logic 1402 and / or SSB tracking logic 1403. For example, UE 115 receives one or more RRC messages via wireless radio units 1400a-r and antennas 252a-r. For illustration, the one or more RRC messages include or indicate a second PCI, a half-frame bit, and a period. In addition, another RRC message or one of the previous RRC messages indicates that the message is configured to indicate an SSB index value of the second SSB burst set.

[0146] At block 1202, the UE 115 monitors at least a first SSB from a first SSB burst set and at least a second SSB from a second SSB burst set. For example, the UE 115 monitors the burst sets based on the first SSB burst set information and the second SSB burst set information, and receives the SSB transmission. The UE 115 may use the SSB transmission as a reference signal after monitoring and receiving the first SSB and the second SSB. For example, the UE may use the reference signal to send or receive a transmission.

[0147] In other implementations, UE 115 may perform additional blocks (or UE 115 may be configured to further perform additional operations). For example, UE 115 may further determine the second SSB burst set (e.g., information thereof) based on the RRC process. As another example, UE 115 may perform one or more operations as described above. As yet another example, UE 115 may perform one or more aspects as described below.

[0148] In a first aspect, the UE 115 determines an SSB index of at least one second SSB from the second SSB burst set and uses the SSB index as a reference signal.

[0149] In a second aspect, alone or in combination with one or more of the above aspects, using the SSB index as a reference signal includes: UE 115 sending an uplink transmission generated based on the reference signal; or receiving, by the UE, a downlink transmission generated based on the reference signal.

[0150] In a third aspect, either alone or in combination with one or more of the above aspects, the reference signal is indicated by: QCL information of the TCI state; spatial relationship information of the SRS or PUCCH; or path loss reference for uplink power control of the PUCCH, PUSCH or SRS.

[0151] In a fourth aspect, alone or in combination with one or more of the above aspects, the reference signal comprises a reference signal for power control.

[0152] In a fifth aspect, alone or in combination with one or more of the above aspects, UE 115 receives an RRC configuration message indicating that a field of a specific type of message is configured to indicate an SSB index of a second SSB burst set of a second PCI; determines a specific SSB index of a second SSB burst set of the second PCI based on an instance of the specific type of message configured by the RRC configuration message from the second PCI; and determines a position and timing of the index of the second SSB burst set to determine second SSB burst set information, wherein the position and timing of the index of the second SSB are determined based on the second PCI, a half-frame bit, and a period.

[0153] In the sixth aspect, alone or in combination with one or more of the above aspects, UE 115 determines a specific SSB index of a second SSB burst set of a second PCI as a reference signal based on the RRC configuration of one or more of the following: QCL information of the TCI state, spatial relationship information of SRS or PUCCH, or path loss reference for uplink power control of PUCCH, PUSCH or SRS; and UE 115 uses the SSB indicated by the SSB index of the second SSB burst set as a reference signal for the following: QCL information of the TCI state; spatial relationship information of SRS or PUCCH; or path loss reference for uplink power control of PUCCH, PUSCH or SRS.

[0154] In a seventh aspect, alone or in combination with one or more of the above aspects, an SSB index of a second SSB burst set is determined based on QCL information of a TCI state.

[0155] In an eighth aspect, alone or in combination with one or more of the above aspects, the SSB index of the second SSB burst set is determined based on spatial relationship information of the SRS or PUCCH.

[0156] In a ninth aspect, either alone or in combination with one or more of the above aspects, the SSB index of the second SSB burst set is determined based on a path loss reference for uplink power control of PUCCH, PUSCH or SRS.

[0157] In a tenth aspect, alone or in combination with one or more of the above aspects, a second SSB burst set includes a set of candidate SSBs within the duration and associated with a second PCI.

[0158] In an eleventh aspect, alone or in combination with one or more of the above aspects, UE 115 determines a second PCI, a half-frame bit of a second SSB burst set for the second PCI, and a period for the second SSB burst set based on an RRC message.

[0159] In a twelfth aspect, alone or in combination with one or more of the above aspects, UE 115 determines a frame number, a system frame number (SFN), SSB-SCS, ss-PBCH-BlockPower, a frequency domain position, or a combination thereof based on an RRC message or another RRC message.

[0160] In the thirteenth aspect, alone or in combination with one or more of the above aspects, UE 115 determines the position and timing of the index of the second SSB burst set based on one or more of the frame number, system frame number (SFN), SSB-SCS, ss-PBCH-BlockPower, frequency domain position or a combination thereof to determine the second SSB burst set information.

[0161] In a fourteenth aspect, alone or in combination with one or more of the above aspects, UE 115 determines a first PCI and first SSB burst set information corresponding to the first PCI; determines the position and timing of an index of a second SSB burst set of a second PCI; receives an RRC configuration message indicating that a field of a specific type of message is configured to indicate an SSB index of a second SSB burst set; and determines a specific SSB index of a second SSB burst set of a second PCI based on an instance of the specific type of message configured by the RRC configuration message.

[0162] In a fifteenth aspect, alone or in combination with one or more of the above aspects, the UE 115 uses a specific SSB index as a reference signal.

[0163] In a sixteenth aspect, either alone or in combination with one or more of the above aspects, the position and timing of the index of the second SSB burst set are determined based on a second PCI, half-frame bits and period, and the UE 115 further determines the second PCI, half-frame bits and period based on the RRC configuration.

[0164] A network entity (e.g., base station 105) may also perform complementary and / or reciprocal actions as described above. In another specific aspect, a method of wireless communication includes: sending, by a network entity, an SSB index of a first synchronization signal block (SSB) burst set corresponding to a first physical cell identifier (PCI); sending, by a network entity, an RRC configuration message indicating that a field of a specific type of message is configured to indicate an SSB index of a second SSB burst set of a second PCI; and sending, by a network entity, a message of the specific type of message configured by an RRC configuration message from a second PCI, the message indicating a specific SSB index of a second SSB burst set of the second PCI.

[0165] In other implementations, the base station 105 may perform additional blocks (or the base station 105 may be configured to further perform additional operations). For example, the base station 105 may perform one or more operations as described above. As another example, the base station 105 may perform one or more aspects as described below.

[0166] In a first aspect, a specific SSB index is used as a reference signal.

[0167] In a second aspect, alone or in combination with one or more of the above aspects, a base station sends a downlink transmission generated based on a reference signal; or receives an uplink transmission generated based on a reference signal.

[0168] In a third aspect, alone or in combination with one or more of the above aspects, the reference signal comprises a reference signal for power control.

[0169] In a fourth aspect, either alone or in combination with one or more of the above aspects, the reference signal is indicated by: QCL information of the TCI state; spatial relationship information of the SRS or PUCCH; or a path loss reference for uplink power control of the PUCCH, PUSCH or SRS.

[0170] In a fifth aspect, alone or in combination with one or more of the above aspects, a specific SSB index of the second SSB burst set is determined based on QCL information of the TCI state.

[0171] In a sixth aspect, alone or in combination with one or more of the above aspects, a specific SSB index of the second SSB burst set is determined based on spatial relationship information of SRS or PUCCH.

[0172] In a seventh aspect, either alone or in combination with one or more of the above aspects, a specific SSB index of a second SSB burst set is determined based on a path loss reference for uplink power control of PUCCH, PUSCH or SRS.

[0173] In an eighth aspect, alone or in combination with one or more of the above aspects, a second SSB burst set includes a set of candidate SSBs within a duration and associated with a second PCI.

[0174] In a ninth aspect, alone or in combination with one or more of the above aspects, the base station 105 sends a second PCI, half a frame bit of a second SSB burst set for the second PCI, and a period for the second SSB burst set based on the RRC configuration.

[0175] In the tenth aspect, alone or in combination with one or more of the above aspects, the base station 105 sends a frame number, a system frame number (SFN), SSB-SCS, ss-PBCH-BlockPower, a frequency domain position or a combination thereof based on the RRC configuration.

[0176] Therefore, the UE and the base station can perform enhanced SSB detection and monitoring for the multi-TRP mode. By performing enhanced SSB detection and monitoring for multiple TRPs, latency and overhead can be reduced, and throughput and reliability can be increased.

[0177] Fig.13 is a block diagram illustrating example blocks executed by a UE configured according to one aspect of the present disclosure. The example blocks will also be described with respect to Fig.14 1. At block 1300, a mobile communication device (e.g., UE 115) receives a channel state information (CSI) report request. The UE (e.g., UE 115) receives a downlink transmission (e.g., a first downlink transmission, such as DCI, RRC, MAC CE) via a wireless radio unit 1400a-r and an antenna 252a-r. For example, the UE 115 receives a report request transmission, such as a configuration transmission 950.

[0178] At block 1301, the UE 115 determines the number of reference signal received power (RSRP) reports to send based on a CSI reporting request. The UE 115 determines the number of reports to send or feedback based on an indicator or field of a CSI reporting request (such as 942).

[0179] At block 1302, the UE 115 sends a first RSRP report for a first beam in a plurality of beams, the first beam being associated with a first group of beams in a plurality of groups, wherein each beam in the plurality of beams is associated with a group in the plurality of groups. For example, the UE 115 sends a first RSRP report (e.g., 954) indicating a beam from the first group.

[0180] At block 1303, the UE 115 sends a second RSRP report for a second beam in the plurality of beams, the second beam being associated with a second group of beams in the plurality of groups. For example, the UE 115 sends a second RSRP report (e.g., 964) indicating a beam from the second group.

[0181] In other implementations, the UE 115 may execute additional blocks (or the UE 115 may be configured to further perform additional operations). For example, the UE 115 may execute Figures 11A-11C As another example, UE 115 may perform one or more aspects as described below.

[0182] In a first aspect, the UE 115 receives information indicating grouping information for a plurality of beams; and determines, based on the grouping information, a group among a plurality of groups for each of the plurality of beams.

[0183] In a second aspect, alone or in combination with one or more of the above aspects, the UE 115 determines a group of the plurality of groups for each beam of the plurality of beams based on NZP-CSI-RS, CSI-SSB or TCI status.

[0184] In a third aspect, alone or in combination with one or more of the above aspects, the number of RSRP reports indicates a number of reports for a particular group of the plurality of groups.

[0185] In a fourth aspect, alone or in combination with one or more of the above aspects, the number of RSRP reports indicates a number of reports for each group of the plurality of groups.

[0186] In a fifth aspect, alone or in combination with one or more of the above aspects, the number of RSRP reports indicates the number of reports for at least two groups of the plurality of groups.

[0187] In a sixth aspect, alone or in combination with one or more of the above aspects, the number of RSRP reports indicates a total number of reports.

[0188] In a seventh aspect, alone or in combination with one or more of the above aspects, the UE 115 determines a value for a number of RSRP reports for a particular group; and determines a number of highest RSRP values ​​for the particular group, the number corresponding to the value.

[0189] In an eighth aspect, either alone or in combination with one or more of the above aspects, the UE 115 performs the following operations: determining whether the total number of reports is greater than or equal to the number of groups of multiple groups; in response to determining that the total number of reports is greater than or equal to the number of groups, determining the highest RSRP value from each group of the multiple groups; based on the total number of reports and the number of groups, determining the remaining number of reports; and determining the next highest value from any group.

[0190] In a ninth aspect, either alone or in combination with one or more of the above aspects, UE 115 determines whether the total number of reports is greater than or equal to the number of groups of multiple groups; and in response to determining that the total number of reports is not greater than or equal to the number of groups, UE 115 determines the highest value from N groups, where N corresponds to the total number of reports.

[0191] In a tenth aspect, either alone or in combination with one or more of the above aspects, UE 115 determines a highest RSRP value for any group among a plurality of groups; determines a range of RSRP values ​​based on the highest RSRP value and a threshold value; determines a filtered RSRP value based on the range of RSRP values; and selects a number of RSRP reports based on the filtered RSRP value.

[0192] In an eleventh aspect, alone or in combination with one or more of the above aspects, the first group and the second group correspond to the same TRP.

[0193] In a twelfth aspect, alone or in combination with one or more of the above aspects, the first group and the second group correspond to different TRPs.

[0194] In a thirteenth aspect, alone or in combination with one or more of the above aspects, one of the different TRPs is further associated with a third group.

[0195] In a fourteenth aspect, alone or in combination with one or more of the above aspects, a beam of the plurality of beams is a CSI-RS.

[0196] In a fifteenth aspect, alone or in combination with one or more of the above aspects, a beam of the plurality of beams is a SSB.

[0197] In a sixteenth aspect, alone or in combination with one or more of the above aspects, the beams in the plurality of beams are CSI-RS and SSB.

[0198] A network entity (e.g., base station 105) may also perform complementary and / or reciprocal actions as described above. In another specific aspect, a method of wireless communication includes: sending, by a network entity, a channel state information (CSI) report request; receiving, by the network entity, a first reference signal received power (RSRP) report for a first beam in a plurality of beams, the first beam being associated with a first group of beams in a plurality of groups, wherein each beam in the plurality of beams is associated with a group in the plurality of groups; and receiving, by the network entity, a second RSRP report for a second beam in the plurality of beams, the second beam being associated with a second group of beams in the plurality of groups.

[0199] In other implementations, the base station 105 may perform additional blocks (or the base station 105 may be configured to further perform additional operations). For example, the base station 105 may perform one or more operations as described above. As another example, the base station 105 may perform one or more aspects as described below.

[0200] In a first aspect, the base station 105 transmits information indicating grouping information for a plurality of beams.

[0201] In a second aspect, alone or in combination with one or more of the above aspects, the grouping information is based on NZP-CSI-RS, CSI-SSB or TCI status.

[0202] In a third aspect, alone or in combination with one or more of the above aspects, the CSI reporting request indicates a number of RSRP reports, and wherein the number of RSRP reports indicates a number of reports for a specific group of the plurality of groups.

[0203] In a fourth aspect, alone or in combination with one or more of the above aspects, the CSI reporting request indicates a number of RSRP reports, and wherein the number of RSRP reports indicates a number of reports for each of the plurality of groups.

[0204] In a fifth aspect, alone or in combination with one or more of the above aspects, the CSI reporting request indicates a number of RSRP reports, and wherein the number of RSRP reports indicates a number of reports for at least two of the plurality of groups.

[0205] In a sixth aspect, alone or in combination with one or more of the above aspects, the CSI reporting request indicates a number of RSRP reports, and wherein the number of RSRP reports indicates a total number of reports.

[0206] In a seventh aspect, alone or in combination with one or more of the above aspects, the base station 105 determines a value of a number of RSRP reports for a particular group; and determines a number of highest RSRP values ​​for the particular group, the number corresponding to the value.

[0207] In an eighth aspect, either alone or in combination with one or more of the above aspects, the base station 105 performs the following operations: determining whether the total number of reports is greater than or equal to the number of groups of multiple groups; in response to determining that the total number of reports is greater than or equal to the number of groups, determining the highest RSRP value from each group of the multiple groups; based on the total number of reports and the number of groups, determining the remaining number of reports; and determining the next highest value from any group.

[0208] In a ninth aspect, either alone or in combination with one or more of the above aspects, the base station 105 performs the following operations: determining whether the total number of reports is greater than or equal to the number of groups; and in response to determining that the total number of reports is not greater than or equal to the number of groups, determining a maximum value from N groups, where N corresponds to the total number of reports.

[0209] In a tenth aspect, alone or in combination with one or more of the above aspects, the base station 105 performs the following operations: determining the highest RSRP value of any group among multiple groups; determining a range of RSRP values ​​based on the highest RSRP value and a threshold value; determining a filtered RSRP value based on the range of RSRP values; and selecting the number of RSRP reports based on the filtered RSRP value.

[0210] In an eleventh aspect, alone or in combination with one or more of the above aspects, the first group and the second group correspond to the same TRP.

[0211] In a twelfth aspect, alone or in combination with one or more of the above aspects, the first group and the second group correspond to different TRPs.

[0212] In a thirteenth aspect, alone or in combination with one or more of the above aspects, one of the different TRPs is further associated with a third group.

[0213] In a fourteenth aspect, alone or in combination with one or more of the above aspects, a beam of the plurality of beams is a CSI-RS.

[0214] In a fifteenth aspect, alone or in combination with one or more of the above aspects, a beam of the plurality of beams is a SSB.

[0215] In a sixteenth aspect, alone or in combination with one or more of the above aspects, the beams in the plurality of beams are CSI-RS and SSB.

[0216] Therefore, the UE and the base station can perform enhanced beam management and reporting for multi-TRP mode. By performing enhanced beam management and reporting for multi-TRP, additional functions can be achieved (such as reports can be sent to two different TRPs). Therefore, latency and overhead can be reduced, and throughput and reliability can be increased.

[0217] It will be appreciated by those skilled in the art that any of a variety of different techniques and methods may be used to represent information and signals. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be mentioned throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0218] Fig.12 and Fig.13 The functional blocks and modules in the may include processors, electronic devices, hardware devices, electronic components, logical circuits, memories, software codes, firmware codes, etc., or any combination thereof.

[0219] It will also be appreciated by those skilled in the art that various illustrative logic blocks, modules, circuits and algorithmic steps described in conjunction with the disclosure herein can be implemented as electronic hardware, computer software or a combination of the two. In order to clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits and steps have been generally described above around their functions. Whether such functions are implemented as hardware or software depends on specific applications and the design constraints imposed on the entire system. Those skilled in the art can implement the described functions in an alternative manner for each specific application, but such implementation decisions should not be interpreted as causing a deviation from the protection scope of the present disclosure. Those skilled in the art will also readily recognize that the order or combination of components, methods or interactions described herein are only examples, and components, methods or interactions of various aspects of the present disclosure can be combined or performed in a manner different from those shown and described herein.

[0220] The various illustrative logic blocks, modules, and circuits described in conjunction with the disclosure herein are implemented or executed using a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such structure.

[0221] The steps of the method or algorithm described in conjunction with the disclosure herein may be directly embodied in hardware, in a software module executed by a processor, or in a combination of the two. The software module may be located in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a mobile hard disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium may be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium. In an alternative, the storage medium may be an integral part of the processor. The processor and the storage medium may be located in an ASIC. The ASIC may be located in a user terminal. In an alternative, the processor and the storage medium may be located in a user terminal as discrete components.

[0222] In one or more exemplary designs, the functions described can be implemented with hardware, software, firmware or any combination thereof. When implemented with software, the functions can be stored in a computer-readable medium or transmitted by a computer-readable medium as one or more instructions or codes. Computer-readable media include both computer storage media and communication media, and communication media include any media that promotes the transmission of a computer program from one place to another. Computer-readable storage media can be any available medium that can be accessed by a general or special-purpose computer. By way of example and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage devices, or can be used to carry or store the desired program code unit with the form of an instruction or data structure and can be accessed by a general or special-purpose computer or a general or special-purpose processor. In addition, connection can be appropriately referred to as a computer-readable medium. For example, if the software is transmitted from a website, a server or other remote source using a coaxial cable, an optical fiber cable, a twisted pair or a digital subscriber line (DSL), then the coaxial cable, the optical fiber cable, the twisted pair or the DSL are included in the definition of the medium. As used herein, disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, wherein disks usually reproduce data magnetically, while discs use lasers to reproduce data optically. Combinations of the above should also be included within the scope of computer-readable media.

[0223] As used herein, including in the claims, when the term "and / or" is used with a list of two or more items, it means that any one of the listed items may be taken alone, or any combination of two or more of the listed items may be taken. For example, if a complex is described as containing components A, B, and / or C, the complex may contain: only A; only B; only C; a combination of A and B; a combination of A and C; a combination of B and C; or a combination of A, B, and C. Furthermore, as used herein, including in the claims, "or" as used in a list of items ending with "at least one of" indicates a separate list, so that, for example, the list "at least one of A, B, or C" means: A or B or C or AB or AC or BC or ABC (i.e., A and B and C), or any combination thereof.

[0224] The previous description of the present disclosure is provided so that those skilled in the art can implement or use the present disclosure. Various modifications to the disclosure will be apparent to those skilled in the art, and the overall principles defined herein may be applied to other variations without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the examples and designs described herein, but to be given the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method of wireless communication, comprising: Determining, by a user equipment (UE), first synchronization signal block (SSB) burst set information corresponding to a first physical cell identifier (PCI); Determining, by the UE, second SSB burst set information corresponding to a second PCI, where the second PCI is different from the first PCI; Receiving, by the UE, an RRC configuration message, wherein a field of the RRC configuration message indicating a specific type of message is configured to indicate an SSB index of the second SSB burst set of the second PCI; Determining, by the UE, a specific SSB index of the second SSB burst set of the second PCI based on an instance of the specific type of message configured by the RRC configuration message from the second PCI; Determining, by the UE, a position and timing of an index of the second SSB burst set to determine the second SSB burst set information, wherein the position and timing of the index of the second SSB are determined based on the second PCI, a half-frame bit, and a period; as well as The UE monitors at least a first SSB from the first SSB burst set and at least a second SSB from the second SSB burst set based on the first SSB burst set information and the second SSB burst set information.

2. The method according to claim 1, further comprising: determining, by the UE, an SSB index of the at least one second SSB from the second SSB burst set; as well as The SSB index is used by the UE as a reference signal.

3. The method according to claim 2, wherein: Using the SSB index as the reference signal comprises: sending, by the UE, an uplink transmission generated based on the reference signal; or A downlink transmission generated based on the reference signal is received by the UE.

4. The method according to claim 2, wherein: The reference signal is indicated by: QCL information of TCI status; Spatial relationship information of SRS or PUCCH; or Path loss reference for uplink power control for PUCCH, PUSCH or SRS.

5. The method according to claim 2, wherein: The reference signal includes a reference signal for power control.

6. The method according to claim 1, further comprising: The UE determines, based on one or more RRC configurations of the following items, the specific SSB index of the second SSB burst set of the second PCI as a reference signal: QCL information of TCI status; Spatial relationship information of SRS or PUCCH; or Path loss reference for uplink power control of PUCCH, PUSCH or SRS; as well as using the SSB indicated by the SSB index of the second SSB burst set as a reference signal for: the QCL information of the TCI state; The spatial relationship information of SRS or PUCCH; or The path loss reference is used for uplink power control of PUCCH, PUSCH or SRS.

7. The method according to claim 6, wherein: The SSB index of the second SSB burst set is determined based on the QCL information of the TCI state.

8. The method according to claim 6, wherein: The SSB index of the second SSB burst set is determined based on the spatial relationship information of SRS or PUCCH.

9. The method according to claim 6, wherein: The SSB index of the second SSB burst set is determined based on the path loss reference for uplink power control of PUCCH, PUSCH or SRS.

10. An apparatus configured for wireless communication, the apparatus comprising: at least one processor; as well as a memory coupled to the processor, the processor being configured to: Determining, by a user equipment (UE), first synchronization signal block (SSB) burst set information corresponding to a first physical cell identifier (PCI); Determining, by the UE, second SSB burst set information corresponding to a second PCI, where the second PCI is different from the first PCI; Determining, by the UE, a position and timing of an index of the second SSB burst set of the second PCI; Receiving, by the UE, an RRC configuration message, wherein a field of the RRC configuration message indicating a specific type of message is configured to indicate an SSB index of the second SSB burst set; Determining, by the UE, a specific SSB index of the second SSB burst set of the second PCI based on an instance of the specific type of message configured through the RRC configuration message; as well as The UE monitors at least a first SSB from the first SSB burst set and at least a second SSB from the second SSB burst set based on the first SSB burst set information and the second SSB burst set information.

11. The device according to claim 10, wherein: The second SSB burst set includes a set of candidate SSBs within a duration and associated with the second PCI.

12. The device according to claim 10, wherein: The processor is further configured to: The UE determines the second PCI, the half-frame bits of the second SSB burst set used for the second PCI, and the period for the second SSB burst set based on the RRC message.

13. The device according to claim 12, wherein: The processor is further configured to: The UE determines a frame number, a system frame number (SFN), SSB-SCS, ss-PBCH-BlockPower, a frequency domain position, or a combination thereof based on the RRC message or another RRC message.

14. The device according to claim 13, wherein: The processor is further configured to: The UE determines the position and timing of the index of the second SSB burst set based on one or more of the frame number, the system frame number (SFN), the SSB-SCS, the ss-PBCH-BlockPower, the frequency domain position or a combination thereof to determine the second SSB burst set information.

15. The device according to claim 10, wherein: The processor is further configured to: The specific SSB index is used by the UE as a reference signal.

16. The device according to claim 15, wherein: The position and timing of the index of the second SSB burst set are determined based on the second PCI, the half-frame bits and the period, and also include: determining the second PCI, the half-frame bits and the period based on the RRC configuration.

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