Collision of Physical Downlink Control Channel and Synchronization Signal Block
By passing the resource location information of the synchronization signal block in the wireless communication system, and selectively monitoring or sending a set of resource elements based on the conflict situation, the problem of conflict between PDCCH and SSB is solved, and communication efficiency and resource utilization are improved.
Patent Information
- Application Number
- CN202180045344.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2021-06-02
- Filing Date
- 2021-06-03
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2041-06-03
AI Technical Summary
In wireless communication systems, conflicts are prone to occur between the physical downlink control channel (PDCCH) and the synchronization signal block (SSB), resulting in reduced communication efficiency and waste of resources.
Conflicts are avoided by passing resource location information indicating a synchronization signal block between the mobile station and the base station, and selectively monitoring or sending a set of resource elements based on whether it conflicts with the PDCCH.
It effectively avoids conflicts between PDCCH and SSB, improves the efficiency and resource utilization of the communication system, and reduces the network burden.
Smart Images

Figure CN115804047B_ABST
Abstract
Description
[0001] Cross - Reference to Related Applications
[0002] This patent application claims the benefit of priority to U.S. Provisional Patent Application No. 63 / 046,992, entitled "PHYSICAL DOWNLINK CONTROL CHANNEL AND SYNCHRONIZATION SIGNAL BLOCK COLLISION", filed on July 1, 2020, and U.S. Non - Provisional Patent Application No. 17 / 303,577, entitled "PHYSICAL DOWNLINK CONTROL CHANNEL AND SYNCHRONIZATION SIGNAL BLOCK COLLISION", filed on June 2, 2021, which are hereby incorporated by reference in their entirety. Technical Field
[0003] Aspects of the present disclosure generally relate to wireless communication and relate to techniques and apparatuses for conflicts of a physical downlink control channel (PDCCH) and a synchronization signal block (SSB). Background Art
[0004] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasting. A typical wireless communication system may employ a multiple - access technology capable of supporting communication with multiple user equipments (UEs) by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple - access technologies include code - division multiple - access (CDMA) systems, time - division multiple - access (TDMA) systems, frequency - division multiple - access (FDMA) systems, orthogonal frequency - division multiple - access (OFDMA) systems, single - carrier frequency - division multiple - access (SC - FDMA) systems, time - division synchronous code - division multiple - access (TD - SCDMA) systems, and long - term evolution (LTE). LTE / Advanced LTE is an enhanced set of mobile standards for the universal mobile telecommunications system (UMTS) released by the 3rd Generation Partnership Project (3GPP).
[0005] A wireless network may include multiple base stations (BSs) capable of supporting communication for multiple user equipments (UEs). The UEs may communicate with the BSs via a downlink and an uplink. The "downlink" (or "forward link") refers to the communication link from the BS to the UE, and the "uplink" (or "reverse link") refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit - receive point (TRP), new radio (NR) BS, 5G Node B, etc.
[0006] The above multi-access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipments to communicate at the urban, national, regional, and even global levels. NR, which can also be referred to as 5G, is an enhanced collection of the LTE mobile standard released by 3GPP. NR is designed to better support mobile broadband Internet access by: improving spectral efficiency, reducing costs, improving services, leveraging new spectrums, and better integrating with other open standards that use cyclic prefix (CP) orthogonal frequency division multiplexing (CP-OFDM) on the downlink (DL) and CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), and supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to grow, further improvements to LTE, NR, and other wireless access technologies remain useful. Summary of the Invention
[0007] In some aspects, a mobile station for wireless communication includes: a memory; and one or more processors coupled to the memory, the mobile station being configured to: receive from a base station information indicating a resource location of one or more synchronization signal blocks (SSBs) in a set of SSBs in which the SSBs will be transmitted; and selectively monitor a plurality of sets of resource element groups (REGs) at least in part based on whether at least one of the one or more SSBs will conflict with one or more of the plurality of sets of REGs that repeat with a physical downlink control channel (PDCCH).
[0008] In some aspects, a base station for wireless communication includes: a memory; and one or more processors coupled to the memory, the base station being configured to: send to a mobile station information indicating a resource location of one or more SSBs in a set of SSBs in which the SSBs will be transmitted; and selectively transmit in a plurality of sets of REGs at least in part based on whether at least one of the one or more SSBs will conflict with one or more of the plurality of sets of REGs that repeat with a PDCCH.
[0009] In some aspects, a method of wireless communication performed by a mobile station includes: receiving from a base station information indicating a resource location of one or more SSBs in a set of SSBs in which the SSBs will be transmitted; and selectively monitoring a plurality of sets of REGs at least in part based on whether at least one of the one or more SSBs will conflict with one or more of the plurality of sets of REGs that repeat with a PDCCH.
[0010] In some aspects, a method of wireless communication performed by a base station includes: a mobile station transmitting information indicating a resource location where one or more SSBs in an SSB set will be transmitted; and selectively transmitting in a plurality of REG sets at least in part based on whether at least one of the one or more SSBs will conflict with one or more of a plurality of REG sets in which PDCCH is repeated.
[0011] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes: one or more instructions that, when executed by one or more processors of a mobile station, cause the mobile station to: receive from a base station information indicating a resource location where one or more SSBs in an SSB set will be transmitted; and selectively monitor a plurality of REG sets at least in part based on whether at least one of the one or more SSBs will conflict with one or more of a plurality of REG sets in which PDCCH is repeated.
[0012] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes: one or more instructions that, when executed by one or more processors of a base station, cause the base station to: transmit to a mobile station information indicating a resource location where one or more SSBs in an SSB set will be transmitted; and selectively transmit in a plurality of REG sets at least in part based on whether at least one of the one or more SSBs will conflict with one or more of a plurality of REG sets in which PDCCH is repeated.
[0013] In some aspects, an apparatus for wireless communication includes: a unit for receiving from a base station information indicating a resource location where one or more SSBs in an SSB set will be transmitted; and a unit for selectively monitoring a plurality of REG sets at least in part based on whether at least one of the one or more SSBs will conflict with one or more of a plurality of REG sets in which PDCCH is repeated.
[0014] In some aspects, an apparatus for wireless communication includes: a unit for transmitting to a mobile station information indicating a resource location where one or more SSBs in an SSB set will be transmitted; and a unit for selectively transmitting in a plurality of REG sets at least in part based on whether at least one of the one or more SSBs will conflict with one or more of a plurality of REG sets in which PDCCH is repeated.
[0015] Aspects generally include methods, apparatuses, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems that are generally described herein with reference to the drawings and the specification and as illustrated in the drawings and the specification.
[0016] The foregoing has outlined rather broadly the features and technical advantages of examples in accordance with the present disclosure so that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of 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 (the organization and method of operation) of the concepts disclosed herein and the related advantages will be better understood from the following description. Each of the drawings in the figures is provided for purposes of illustration and description and not as a definition of the scope of the claims.
[0017] Although aspects are described herein by way of illustration of some examples, those skilled in the art will understand that such aspects may be implemented in many other arrangements and scenarios. The techniques described herein may be implemented using different platform types, devices, systems, shapes, sizes, and / or packaging arrangements. For example, some aspects may be implemented via integrated chip embodiments or other non-module component-based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial devices, retail / purchase devices, medical devices, or artificial intelligence-enabled devices). Aspects may be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, or system-level components. Devices incorporating the aspects and features may include additional components and features for the implementation and practice of the claimed and described aspects. For example, the transmission and reception of wireless signals may include multiple components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, or summers). The aspects described herein are intended to be practiced in a variety of devices, components, systems, distributed arrangements, or end-user devices of different sizes, shapes, and configurations. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] To understand in detail the features of the present disclosure described above, a more specific description of the foregoing overview with reference to the various aspects is provided, some of which are illustrated in the drawings. It should be noted, however, that the drawings only illustrate certain typical aspects of the present disclosure and are therefore not considered to limit its scope, as the description may admit other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.
[0019] Figure 1 is a schematic diagram showing an example of a wireless network according to the present disclosure.
[0020] Figure 2 is a schematic diagram showing an example of a base station communicating with a user equipment (UE) in a wireless network according to the present disclosure.
[0021] Figure 3 is a schematic diagram showing an example of a resource structure for wireless communication according to the present disclosure.
[0022] Figure 4 is a schematic diagram showing an example of a synchronization signal layer according to the present disclosure.
[0023] Figure 5 is a schematic diagram showing an example of a synchronization signal block (SSB) position according to the present disclosure.
[0024] Figure 6 is a schematic diagram showing an example of using a beam for communication between a base station and a UE according to the present disclosure.
[0025] Figures 7A - 7C is a schematic diagram showing an example associated with a conflict between a physical downlink control channel (PDCCH) and an SSB according to the present disclosure.
[0026] Figure 8 and 9 is a schematic diagram showing an example process associated with a conflict between a PDCCH and an SSB according to the present disclosure. Detailed Description
[0027] Aspects of the present disclosure are described more fully hereinafter with reference to the accompanying drawings. However, the present disclosure may be embodied in different forms and should not be construed as limited to any specific structure or function presented throughout the present disclosure. On the contrary, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art. According to the teachings herein, those skilled in the art should recognize that the scope of the present disclosure is intended to cover any aspect of the disclosure disclosed herein, whether implemented independently of any other aspect of the present disclosure or in combination with any other aspect of the present disclosure. For example, any number of the aspects set forth herein may be used to implement an apparatus or practice a method. Additionally, the scope of the present disclosure is intended to cover such apparatus and methods practiced using other structures, functions, or combinations of structures and functions in addition to or different from the aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein may be embodied by one or more elements of the claims.
[0028] Aspects of a telecommunications system will now be presented with reference to various apparatuses and techniques. These apparatuses and techniques will be described in detail below and will be illustrated in the drawings by various boxes, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether to implement these elements as hardware or software depends on the particular application and the design constraints imposed on the overall system.
[0029] It should be noted that although terms generally associated with 5G or NR radio access technology (RAT) may be used herein to describe aspects, aspects of the present disclosure may be applied to other RATs, such as 3G RAT, 4G RAT, and / or post-5G RAT (e.g., 6G).
[0030] Figure 1 FIG. is a schematic diagram showing an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be or may include elements of a 5G (NR) network and / or an LTE network, etc. The wireless network 100 may include a plurality of base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A base station (BS) is an entity that communicates with a user equipment (UE) and may also be referred to as an NR BS, Node B, gNB, 5G Node B (NB), access point, transmit receive point (TRP), etc. Each BS may provide communication coverage for a specific geographical area. In 3GPP, depending on the context in which the term is used, the term "cell" may refer to the coverage area of a BS and / or the BS subsystem serving that coverage area.
[0031] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographical area (e.g., with a radius of several kilometers) and may allow unrestricted access by UEs with a service subscription. A pico cell may cover a relatively small geographical area and may allow unrestricted access by UEs with a service subscription. A femto cell may cover a relatively small geographical area (e.g., a home) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1In the example shown, BS 110a can be a macro BS for macro cell 102a, BS 110b can be a pico BS for pico cell 102b, and BS 110c can be a femto BS for femto cell 102c. A BS can support one or more (e.g., three) cells. The terms “eNB”, “base station”, “NR BS”, “gNB”, “TRP”, “AP”, “Node B”, “5G NB” and “cell” can be used interchangeably herein.
[0032] In some aspects, a cell may not necessarily be stationary, and the geographical area of a cell can move according to the location of a mobile BS. In some aspects, BSs can be interconnected with each other and / or interconnected to one or more other BSs or network nodes (not shown) in the wireless network 100 using any suitable transport network via various types of backhaul interfaces (such as, direct physical connections or virtual networks).
[0033] The wireless network 100 may also include relay stations. A relay station is an entity that receives a transmission of data from an upstream station (e.g., a BS or a UE) and sends a transmission of data to a downstream station (e.g., a UE or a BS). A relay station can also be a UE that can relay transmissions for other UEs. In Figure 1 the example shown, relay BS 110d can communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. A relay BS can also be referred to as a relay station, a relay base station, a repeater, etc.
[0034] The wireless network 100 can be a heterogeneous network including different types of BSs (such as macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs can have different transmit power levels, different coverage areas, and different impacts on interference in the wireless network 100. For example, a macro BS can have a high transmit power level (e.g., 5 to 40 watts), while pico BSs, femto BSs, and relay BSs can have lower transmit power levels (e.g., 0.1 to 2 watts).
[0035] The network controller 130 can be coupled to a set of BSs and provide coordination and control for these BSs. The network controller 130 can communicate with the BSs via the backhaul. The BSs can also communicate directly or indirectly with each other via wireless or wired backhaul.
[0036] UE 120 (e.g., 120a, 120b, 120c) can be distributed throughout the wireless network 100, and each UE can be stationary or mobile. The UE can also be referred to as an access terminal, a terminal, a mobile station, a user device, a station, etc. The UE can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, a superbook, a medical device or equipment, a biosensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing device, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.
[0037] Some UEs can be considered machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags, which can communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node can provide a connection to or for a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs can be considered Internet of Things (IoT) devices, and / or can be implemented as narrowband IoT (NB-IoT) devices. Some UEs can be considered customer premises equipment (CPE). UE 120 can be included inside a housing that houses components of the UE 120, such as a processor component and / or a memory component. In some aspects, the processor component and the memory component can be coupled together. For example, the processor component (e.g., one or more processors) and the memory component (e.g., a memory) can be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.
[0038] In general, any number of wireless networks can be deployed in a given geographical area. Each wireless network can support a specific RAT and can operate on one or more frequencies. The RAT can also be referred to as a radio technology, an air interface, etc. The frequency can also be referred to as a carrier, a frequency channel, etc. Each frequency can support a single RAT in a given geographical area to avoid interference between wireless networks of different RATs. In some cases, an NR or 5G RAT network can be deployed.
[0039] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using the base station 110 as a medium to communicate with each other). For example, the UE 120 may use peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols or vehicle-to-infrastructure (V2I) protocols), and / or mesh networks to communicate. In such cases, the UE 120 may perform scheduling operations, resource selection operations, and / or other operations performed by the base station 110 described elsewhere herein.
[0040] Devices of the wireless network 100 may communicate using the electromagnetic spectrum, which may be subdivided into various categories, frequency bands, channels, etc. based on frequency or wavelength. For example, devices of the wireless network 100 may communicate using an operating frequency band having a first frequency range (FR1) (which may span 410 MHz to 7.125 GHz), and / or may communicate using an operating frequency band having a second frequency range (FR2) (which spans 24.25 GHz to 52.6 GHz). The frequency between FR1 and FR2 is sometimes referred to as an intermediate band frequency. Although a portion of FR1 is greater than 6 GHz, FR1 is generally referred to as the "sub-6 GHz" band. Similarly, FR2 is generally referred to as the "millimeter wave" band, although it is different from the extremely high frequency (EHF) band (30 GHz - 300 GHz) defined by the International Telecommunication Union (ITU) as the "millimeter wave" band. Thus, unless otherwise explicitly stated, it should be understood that the term "sub-6 GHz", etc., if used herein, may broadly represent frequencies less than 6 GHz, frequencies within FR1, and / or intermediate band frequencies (e.g., greater than 7.125 GHz). Similarly, unless otherwise explicitly stated, it should be understood that the term "millimeter wave", etc., if used herein, may broadly represent frequencies within the EHF band, frequencies within FR2, and / or intermediate band frequencies (e.g., less than 24.25 GHz). Modifications to the frequencies included in FR1 and FR2 are contemplated, and the techniques described herein apply to those modified frequency ranges.
[0041] As noted above, Figure 1 is provided as an example. Other examples may be different from the example regarding Figure 1 described.
[0042] Figure 2FIG. 200 is a schematic diagram illustrating an example 200 of a base station 110 communicating with a UE 120 in a wireless network 100 in accordance with the present disclosure. The base station 110 may be equipped with T antennas 234a through 234t, and the UE 120 may be equipped with R antennas 252a through 252r, where, generally, T≥1 and R≥1.
[0043] At the base station 110, a transmit processor 220 may receive data for one or more UEs from a data source 212, select one or more modulation and coding schemes (MCSs) for each UE at least in part based on channel quality indicators (CQIs) received from the UEs, process (e.g., encode and modulate) the data for each UE at least in part based on the MCSs selected for the UEs, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling) and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRSs) or demodulation reference signals (DMRSs)) and synchronization signals (e.g., primary synchronization signals (PSSs) and secondary synchronization signals (SSSs)). If applicable, a transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, control symbols, overhead symbols, and / or reference symbols and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process its respective output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 may further process the output sample stream (e.g., convert to analog, amplify, filter, and upconvert) to obtain a downlink signal. The T downlink signals from modulators 232a through 232t may be transmitted via the T antennas 234a through 234t, respectively.
[0044] At the UE 120, antennas 252a through 252r may receive downlink signals from the base station 110 and / or other base stations, and may provide the received signals to demodulators (DEMOD) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, down-convert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM) to obtain the received symbols. The MIMO detector 256 may obtain the received symbols from all R demodulators 254a through 254r, perform MIMO detection (if applicable) on the received symbols, and provide the detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide the decoded data for the UE 120 to the data sink 260, and provide the decoded control information and system information to the controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine reference signal received power (RSRP) parameters, received signal strength indicator (RSSI) parameters, reference signal received quality (RSRQ) parameters, and / or CQI parameters, etc. In some aspects, one or more components of the UE 120 may be included in the housing 284.
[0045] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the base station 110 via the communication unit 294.
[0046] Antennas (e.g., antennas 234a through 234t and / or antennas 252a through 252r) may include one or more antenna panels, antenna groups, collections of antenna elements, and / or antenna arrays, etc., or may be included within one or more antenna panels, antenna groups, collections of antenna elements, and / or antenna arrays, etc. The antenna panels, antenna groups, collections of antenna elements, and / or antenna arrays may include one or more antenna elements. The antenna panels, antenna groups, collections of antenna elements, and / or antenna arrays may include a collection of coplanar antenna elements or a collection of non-coplanar antenna elements. The antenna panels, antenna groups, collections of antenna elements, and / or antenna arrays may include antenna elements within a single housing and / or antenna elements within multiple housings. The antenna panels, antenna groups, collections of antenna elements, and / or antenna arrays may include one or more antenna elements coupled to one or more transmit and / or receive components (such as, Figure 2 one or more components among
[0047] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 and control information from the controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 may also generate reference symbols for one or more reference signals. Symbols from the transmit processor 264 may be precoded by the TX MIMO processor 266 (if applicable), further processed by the modulators 254a through 254r (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the base station 110. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 254) of the UE 120 may be included in the modem of the UE 120. In some aspects, the UE 120 includes a transceiver. The transceiver may include any combination of (one or more) antennas 252, modulator and / or demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, and / or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein (e.g., as described with reference to Figures 7A - 7C Figures 8 and 9).
[0048] At the base station 110, uplink signals from the UE 120 and other UEs may be received by the antennas 234, processed by the demodulator 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain the decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The base station 110 may include a scheduler 246 to schedule the UE 120 for downlink and / or uplink communication. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 232) of the base station 110 may be included in the modem of the base station 110. In some aspects, the base station 110 includes a transceiver. The transceiver may include any combination of (one or more) antennas 234, modulator and / or demodulator 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein (e.g., as described with reference to Figures 7A - 7C Figures 8 and 9).
[0049] As described in more detail elsewhere herein, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or any other component in FIG. 2 may perform one or more techniques associated with conflicts of PDCCH and synchronization signal blocks (SSBs). For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or any other component in FIG. 2 may perform or direct, for example, Figure 8 the operations of process 800, Figure 9 the operations of process 900, and / or other processes described herein. The memories 242 and 282 may store data and program codes for the base station 110 and the UE 120, respectively. In some aspects, the memory 242 and / or the memory 282 may include a non-transitory computer-readable medium storing one or more instructions for wireless communication (e.g., code and / or program code). For example, when one or more instructions are executed by one or more processors of the base station 110 and / or the UE 120 (e.g., directly, or after compilation, transformation, and / or interpretation), the one or more processors, the UE 120, and / or the base station 110 may perform or direct, for example, Figure 8 the operations of process 800, Figure 9 the operations of process 900, and / or other processes described herein. In some aspects, executing the instructions may include running the instructions, transforming the instructions, compiling the instructions, and / or interpreting the instructions, etc.
[0050] In some aspects, the UE 120 may include: a unit for receiving information indicating a resource location where one or more SSBs in an SSB set will be transmitted; a unit for determining whether at least one SSB among the one or more SSBs will conflict with one or more of a plurality of REG sets in which PDCCH is repeated; a unit for selectively monitoring the plurality of REG sets based at least in part on whether at least one SSB will conflict with one or more of the plurality of REG sets; etc. In some aspects, such units may include one or more components of the UE 120 described in conjunction with Figure 2 such as the controller / processor 280, the transmit processor 264, the TX MIMO processor 266, the MOD 254, the antenna 252, the DEMOD 254, the MIMO detector 256, the receive processor 258, etc.
[0051] In some aspects, the base station 110 may include: a unit for sending information indicating a resource location where one or more SSBs in an SSB set will be sent to a UE; a unit for determining whether the UE will monitor multiple REG sets of PDCCH repetitions; a unit for selectively sending in multiple REG sets at least partially based on whether at least one SSB among one or more SSBs will conflict with one or more of the multiple REG sets; etc. In some aspects, such units may include one or more components of the base station 110 described in conjunction with Figure 2 such as the antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.
[0052] Although Figure 2 the boxes in are shown as distinct components, the functions described above with reference to the boxes may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functions described with reference to the transmit processor 264, receive processor 258, and / or TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.
[0053] As pointed out above, Figure 2 is provided as an example. Other examples may be different from the example described with respect to Figure 2
[0054] Figure 3 is a schematic diagram showing an example resource structure 300 for wireless communication according to the present disclosure. The resource structure 300 shows examples of various resource groups described herein. As shown, the resource structure 300 may include a subframe 305. The subframe 305 may include a plurality of time slots 310. Although the resource structure 300 is shown to include 2 time slots per subframe, different numbers of time slots may be included in a subframe (e.g., 4 time slots, 8 time slots, 16 time slots, 32 time slots, etc.). In some aspects, different types of transmission time intervals (TTIs) may be used in addition to subframes and / or time slots. The time slot 310 may include a plurality of symbols 315, such as 7 symbols or 14 symbols per time slot.
[0055] The potential control region of slot 310 can be referred to as a control resource set (CORESET) 320 and can be configured to support efficient use of resources, such as through flexible configuration or reconfiguration of the resources of CORESET 320 for one or more physical downlink control channels (PDCCHs), one or more physical downlink shared channels (PDSCHs), etc. In some aspects, CORESET 320 can occupy the first symbol 315 of slot 310, the first two symbols 315 of slot 310, or the first three symbols 315 of slot 310. Thus, CORESET 320 can include multiple resource blocks (RBs) in the frequency domain and one, two, or three symbols 315 in the time domain. In 5G, the number of resources included in CORESET 320 can be flexibly configured, such as by using radio resource control (RRC) signaling to indicate the frequency domain region (e.g., the number of resource blocks) and / or the time domain region (e.g., the number of symbols) for CORESET 320.
[0056] As shown, the symbol 315 including CORESET 320 can include one or more control channel elements (CCEs) 325 (shown as two CCEs 325 as an example) spanning a portion of the system bandwidth. CCE 325 can include downlink control information (DCI) for providing control information for wireless communication. The base station can send DCI during multiple CCEs 325 (as shown), where the number of CCEs 325 used for the transmission of DCI represents the aggregation level used by the BS for the transmission of DCI. In Figure 3 it, an aggregation level of two is shown as an example, which corresponds to two CCEs 325 in slot 310. In some aspects, different aggregation levels (such as 1, 4, 8, 16, etc.) can be used.
[0057] Each CCE 325 can include a fixed number of resource element groups (REGs) 330 (shown as four REGs 330), or can include a variable number of REGs 330. In some aspects, the number of REGs 330 included in CCE 325 can be specified by the REG bundling size. REG 330 can include one resource block, which can include 12 resource elements (REs) 335 within symbol 315. Resource element 335 can occupy one subcarrier in the frequency domain and one OFDM symbol in the time domain.
[0058] The search space may include all possible positions where the PDCCH may be located (e.g., in time and / or frequency). The CORESET 320 may include one or more search spaces, such as UE-specific search spaces, group common search spaces, and / or common search spaces. The search space may indicate a set of CCE positions where the UE may find PDCCHs that may potentially be used to send control information to the UE. The possible positions for the PDCCH may depend on whether the PDCCH is a UE-specific PDCCH (e.g., for a single UE) or a group common PDCCH (e.g., for multiple UEs), the aggregation level being used, etc. The possible positions for the PDCCH (e.g., in time and / or frequency) may be referred to as PDCCH candidates, and the set of all possible PDCCH positions may be referred to as the search space. For example, the set of all possible PDCCH positions for a particular UE may be referred to as a user-specific search space. Similarly, the set of all possible PDCCH positions across all UEs may be referred to as a common search space. The set of all possible PDCCH positions for a particular group of UEs may be referred to as a group common search space.
[0059] The CORESET 320 may be interleaved or non-interleaved. An interleaved CORESET 320 may have a CCE-to-REG mapping such that adjacent CCEs are mapped to dispersed REG bundles in the frequency domain (e.g., adjacent CCEs are not mapped to consecutive REG bundles of the CORESET 320). A non-interleaved CORESET 320 may have a CCE-to-REG mapping such that all CCEs are mapped to consecutive REG bundles of the CORESET 320 (e.g., in the frequency domain).
[0060] As noted above, Figure 3 is provided as an example. Other examples may be different from the example regarding Figure 3 described.
[0061] Figure 4 is a schematic diagram showing an example 400 of a synchronization signal (SS) layer according to the present disclosure. As Figure 4As shown, the SS layer can include an SS burst set 405, and the SS burst set can include a plurality of SS bursts 410 (shown as SS burst 0 to SS burst N-1), where N is the maximum number of repetitions of the SS bursts 410 that can be sent by the base station. As further shown, each SS burst 410 can include one or more SSBs 415 (shown as SSB 0 to SSB M-1), where M is the maximum number of SSBs 415 that can be carried by the SS burst 410. In some aspects, different SSBs 415 can be beamformed differently (e.g., sent using different beams in beam scanning), and can be used for beam management, beam selection, etc. (e.g., as part of an initial network access process). As Figure 4 shown, the SS burst set 405 can be sent periodically by a wireless node (e.g., base station 110), such as every X milliseconds (ms). In some aspects, the SS burst set 405 can have a fixed or dynamic length (e.g., a length of 5 ms, such as the first half or the second half of a frame), shown as Y ms in Figure 3 this. In some aspects, the maximum number of SSBs 415 in the SS burst set 405 (e.g., a 5 ms burst set) can be four (e.g., in the sub-3 GHz band), eight (e.g., in the sub-8 GHz band), 64 (e.g., in FR2), etc. In some cases, the SS burst set 405 or the SS burst 410 can be referred to as a discovery reference signal (DRS) transmission window, an SSB measurement time configuration (SMTC) window, etc.
[0062] In some aspects, the SSB 415 can include resources carrying the PSS 420, SSS 425, physical broadcast channel (PBCH) / master information block (MIB) 430, etc. In some aspects, a plurality of SSBs 415 are included in the SS burst 410 (e.g., with transmissions on different beams), and for each SSB 415 across the SS burst 410, the PSS 420, SSS 425, and / or PBCH / MIB 430 can be the same. In some aspects, a single SSB 415 can be included in the SS burst 410. In some aspects, the SSB 415 can be at least four symbols (e.g., OFDM symbols) in length, where each symbol carries one or more of the PSS 420 (e.g., occupying one symbol), SSS 425 (e.g., occupying one symbol), and / or PBCH / MIB 430 (e.g., occupying two symbols). In some aspects, the SSB 415 can be referred to as an SS / PBCH block.
[0063] In some aspects, the symbols of the SSB 415 are consecutive, as Figure 4As shown. In some aspects, the symbols of the SSB 415 are non - consecutive. Similarly, in some aspects, one or more SSBs 415 in the SS burst 410 can be transmitted in consecutive radio resources (e.g., consecutive symbols) during one or more time slots. Additionally or alternatively, one or more SSBs 415 in the SS burst 410 can be transmitted in non - consecutive radio resources.
[0064] In some aspects, the SS burst 410 can have a burst period, and the SSBs 415 of the SS burst 410 can be transmitted by a radio node (e.g., the base station 110) according to the burst period. In this case, the SSB 415 can be repeated during each SS burst 410. In some aspects, the set of SS bursts 405 can have a burst - set periodicity (e.g., 5 ms, 10 ms, 20 ms (which can be the default periodicity), 160 ms, etc.), whereby the SS bursts 410 of the set of SS bursts 405 are transmitted by the radio node according to a fixed burst - set periodicity. In other words, the SS burst 410 can be repeated during each set of SS bursts 405.
[0065] In some aspects, the SSB 415 can include an SSB index (e.g., SSB index 0, 1, 2, ……, 63, such as for 64 SSBs), which can correspond to the beam used to carry the SSB 415. The UE 120 can use different receive (Rx) beams to monitor and / or measure the SSB 415 during the initial network access procedure. At least partially based on the monitoring and / or measurement, the UE 120 can indicate to the base station 110 one or more SSBs 415 with the best signal parameters (e.g., RSRP parameter, etc.). The base station 110 and the UE 120 can use one or more of the indicated SSBs 415 to select one or more beams to be used for communication (e.g., for the random access channel (RACH) procedure, etc.) between the base station 110 and the UE 120. Additionally or alternatively, the UE 120 can use the SSB 415 and / or the SSB index to determine the cell timing for the cell (e.g., serving cell) via which the SSB 415 is received.
[0066] As noted above, Figure 4 is provided as an example. Other examples can be different from the example regarding Figure 4 described.
[0067] Figure 5is a schematic diagram showing an example 500 of the SSB positions according to the present disclosure. Specifically, example 500 shows the SSB positions within a half-frame of 5 ms length. The time-domain position (e.g., time slot and / or OFDM symbol) of the SSB (e.g., within a 5 ms half-frame) can be according to a defined (e.g., fixed) pattern. As shown in example 500, the time-domain position of the SSB can be at least partially based on the subcarrier spacing (SCS), which can be 15 kHz or 30 kHz in FR1, 120 kHz or 240 kHz in FR2, etc. For example, for a 120 kHz SCS, there can be 64 SSBs in a 5 ms half-frame, and Figure 5 shows an example pattern for four SSBs (SSB 0 - 3, where 0 - 3 refers to the SSB index) in two time slots at 120 kHz SCS. As another example, for a 240 kHz SCS, there can be 64 SSBs in a 5 ms half-frame, and Figure 5 shows an example pattern for eight SSBs (SSB 0 - 7, where 0 - 7 refers to the SSB index) in four time slots at 240 kHz SCS.
[0068] According to the pattern described above, the time-domain positions for the SSBs are the possible positions for the SSBs. Thus, any set of time-domain positions can be used for actual SSB transmission. In this case, the UE can receive an indication of the time-domain position in which the SSB will be transmitted. For example, the indication can identify the SSB position (e.g., SSB index) in which the SSB will be transmitted, and as described above, the SSB position can correspond to the time-domain position of the pattern. In some aspects, the indication (e.g., ssb-PositionsInBurst) can be in a system information block (SIB) message (e.g., SIB1 message) or a ServingCellConfigCommon message.
[0069] In some aspects, when at least one RE of a PDCCH candidate overlaps with at least one RE of the time-domain position (e.g., associated with the SSB index) for SSB transmission indicated to the UE (e.g., in ssb-PositionsInBurst), the UE can avoid monitoring the PDCCH candidate. In some aspects, when a PDSCH resource allocation overlaps with a physical resource block (PRB) containing an SSB transmission, the UE can rate-match the PDSCH around the PRB containing the SSB transmission (e.g., according to the SSB index provided in ssb-PositionsInBurst).
[0070] As pointed out above, Figure 5are provided as examples. Other examples may be different from those Figure 5 described.
[0071] Figure 6 is a schematic diagram showing an example 600 of using beams for communication between a base station and a UE according to the present disclosure. As Figure 6 shown, the base station 110 and the UE 120 can communicate with each other.
[0072] The base station 110 can transmit to the UE 120 located within the coverage area of the base station 110. The base station 110 and the UE 120 can be configured for beamforming communication, wherein the base station 110 can transmit in the direction of the UE 120 using a directional BS transmit beam, and the UE 120 can receive the transmission using a directional UE receive beam. Each BS transmit beam can have an associated beam ID, beam direction, beam symbol, etc. The base station 110 can transmit downlink communication via one or more BS transmit beams 605.
[0073] The UE 120 can attempt to receive the downlink transmission via one or more UE receive beams 610, and the one or more UE receive beams 610 can be configured using different beamforming parameters at the receiving circuitry of the UE 120. The UE 120 can identify a specific BS transmit beam 605 (shown as BS transmit beam 605-A) and a specific UE receive beam 610 (shown as UE receive beam 610-A) that provide relatively favorable performance (e.g., it has the best channel quality among different measurement combinations of the BS transmit beam 605 and the UE receive beam 610). In some examples, the UE 120 can send which BS transmit beam 605 is identified by the UE 120 as the preferred BS transmit beam that the base station 110 can select for transmission to the UE 120. Thus, the UE 120 can obtain and maintain a beam pair link (BPL) with the base station 110 for downlink communication (e.g., the combination of the BS transmit beam 605-A and the UE receive beam 610-A), and the beam pair link can be further refined and maintained according to one or more established beam refinement procedures.
[0074] A downlink beam (such as BS transmit beam 605 or UE receive beam 610) may be associated with a Transmission Configuration Indication (TCI) state. The TCI state may indicate the directivity or characteristics of the downlink beam, such as one or more Quasi-Co-Location (QCL) attributes of the downlink beam. The QCL attributes may include, for example, Doppler shift, Doppler spread, mean delay, delay spread, or spatial reception parameters, etc. In some examples, each BS transmit beam 605 may be associated with an SSB, and UE 120 may indicate the preferred BS transmit beam 605 by transmitting an uplink transmission associated with the preferred BS transmit beam 605. A particular SSB may have an associated TCI state (e.g., for an antenna port or for beamforming). In some examples, base station 110 may indicate the downlink BS transmit beam 605 at least in part based on the antenna port QCL attributes that may be indicated by the TCI state. The TCI state may be associated with a set of downlink reference signals (such as SSB and aperiodic, periodic, or semi-persistent Channel State Information Reference Signal (CSI-RS)) for different QCL types (e.g., QCL types for different Doppler shift, Doppler spread, mean delay, delay spread, or spatial reception parameters, etc.). In cases where the QCL type indicates spatial reception parameters, the QCL type may correspond to the analog receive beamforming parameters of the UE receive beam 610 at UE 120. Thus, UE 120 may select the corresponding UE receive beam 610 from the set of BPLs at least in part based on base station 110 indicating the BS transmit beam 605 via TCI indication.
[0075] Base station 110 may maintain a set of active TCI states for downlink shared channel transmission and a set of active TCI states for downlink control channel transmission. The set of active TCI states for downlink shared channel transmission may correspond to the beams on the PDSCH that base station 110 uses for downlink transmission. The set of active TCI states for downlink control channel communication may correspond to the beams on the PDCCH or in the CORESET that base station 110 uses for downlink transmission. UE 120 may also maintain a set of active TCI states for receiving downlink shared channel transmission and CORESET transmission. If a TCI state is active for UE 120, UE 120 may have one or more antenna configurations at least in part based on the TCI state, and UE 120 may not need to reconfigure the antenna or the antenna weighting configuration. In some examples, the set of active TCI states for UE 120 (e.g., active PDSCH TCI states and active CORESET TCI states) may be configured via a configuration message (such as an RRC message).
[0076] Similarly, for uplink communication, the UE 120 can transmit in the direction of the base station 110 using a directed UE transmit beam, and the base station 110 can receive the transmission using a directed BS receive beam. Each UE transmit beam can have an associated beam ID, beam direction, or beam signature, etc. The UE 120 can transmit uplink communication via one or more UE transmit beams 615.
[0077] The base station 110 can receive the uplink transmission via one or more BS receive beams 620. The base station 110 can identify a particular UE transmit beam 615 (shown as UE transmit beam 615-A) and a particular BS receive beam 620 (shown as BS receive beam 620-A) that provide relatively favorable performance (e.g., which has the best channel quality for different measurement combinations of the UE transmit beam 615 and the BS receive beam 620). In some examples, the base station 110 can transmit which UE transmit beam 615 is identified by the base station 110 as the preferred UE transmit beam that the base station 110 can select for transmission to the UE 120. Thus, the UE 120 and the base station 110 can obtain and maintain a BPL for uplink communication (e.g., the combination of the UE transmit beam 615-A and the BS receive beam 620-A), and the BPL can be further refined and maintained according to one or more established beam refinement procedures. The uplink beam (such as the UE transmit beam 615 or the BS receive beam 620) can be associated with a spatial relationship. The spatial relationship can indicate the directivity or characteristics of the uplink beam, similar to one or more QCL attributes as described above.
[0078] As pointed out above, Figure 6 is provided as an example. Other examples may be different from the examples regarding Figure 6 described.
[0079] In some wireless systems (e.g., according to Release 15 or 16 of 3GPP), the PDCCH can be associated with a single TCI state. For example, a PDCCH candidate can be defined in a search space set, the search space set can be associated with a single CORESET, and the CORESET can be associated with a single TCI state that is configured and activated for the CORESET.
[0080] However, it is possible that the PDCCH can be associated with multiple (e.g., two) TCI states. In this case, the CORESET can be associated with multiple (e.g., two) TCI states, the set of search spaces can be associated with multiple (e.g., two) CORESETs (and the multiple CORESETs are associated with different TCI states), the PDCCH candidates can be defined across multiple (e.g., two) sets of search spaces, and so on. Thus, some REGs of the PDCCH candidates (e.g., the first REG set) can be associated with the first TCI state, and other REGs of the PDCCH candidates (e.g., the second REG set) can be associated with the second TCI state. The first REG set and the second REG set can be multiplexed in the frequency domain or in the time domain. The REG set of the PDCCH candidates (e.g., the REG set associated with a specific TCI state) can also be referred to as a PDCCH transmission occasion or a PDCCH repetition.
[0081] In some aspects, the TCI state can be defined by QCL information that configures a reference signal, such as CSI-RS resources and / or SSB indices. In some aspects, a first SSB set (e.g., the primary set) can be associated with (e.g., defined or designated for) the serving cell, and a second SSB set (e.g., the secondary set) can be associated with a non-serving cell. As described above, the physical cell identifier (PCI) for the serving cell can be determined based on the PSS and SSS of the initial access procedure. The PCI for the non-serving cell can be RRC-configured. Additionally, the secondary SSB set can be configured for the UE and is associated with the PCI for the non-serving cell. Furthermore, the UE can receive an indication of which SSB indices from the secondary SSB set will be transmitted (e.g., secondary ssb-PositionsInBurst can be configured for the secondary SSB set). In this way, multi-TRP (multi-TRP) SSB transmission can be implemented, where multiple TRPs are associated with different PCIs (e.g., inter-cell multi-TRP transmission). In some aspects, the multiple TCI states associated with the PDCCH candidates can be associated with the same PCI or different PCIs (e.g., the serving cell PCI and the non-serving cell PCI associated with the same component carrier).
[0082] In a current wireless system, a UE may not be able to determine whether to monitor PDCCH candidates that include multiple (e.g., two) REG sets associated with different TCI states. For example, when the SSB indicated for actual transmission conflicts with one or more of the multiple REG sets, the UE may not be able to determine whether to monitor the PDCCH candidates. Some of the techniques and apparatuses described herein enable the UE to determine whether to monitor PDCCH candidates when the indicated SSB conflicts with one or more of the multiple REG sets of the PDCCH candidates. In this way, conflicts between the SSB and the PDCCH can be avoided, thereby improving the performance of the SSB and / or the communication carried in the PDCCH. Additionally, the PDCCH can be utilized more efficiently (e.g., if the SSB will conflict with one REG set but not with another REG set), thereby saving network resources.
[0083] Figures 7A - 7C is a schematic diagram showing an example 700 of a conflict between a PDCCH and an SSB according to the present disclosure. As Figure 7A shown, the base station 110 and the UE 120 can communicate with each other. In some aspects, the base station 110 can be associated with the serving cell for the UE 120, and the serving cell can be associated with a PCI. In some aspects, the base station 110 or another base station 110 can be associated with a non-serving cell for the UE 120, and the non-serving cell can be associated with a different PCI. In some aspects, the serving cell and the non-serving cell can be associated with the same component carrier. In some aspects, the UE 120 can be configured to monitor a set of PDCCH candidates, and each PDCCH candidate can include multiple (e.g., two) REG sets associated with a corresponding TCI state. For example, each PDCCH candidate can include a first REG set associated with a first TCI state, a second REG set associated with a second TCI state, and so on.
[0084] As Figure 7AAs shown in the figure and indicated by reference numeral 705, the base station 110 may send information (e.g., ssb-PositionsInBurst) indicating one or more SSBs in the set of SSBs to be sent (e.g., actually sent) by the base station 110, and the UE 120 may receive the information. In some aspects, the base station 110 may send first information (e.g., first ssb-PositionsInBurst) indicating one or more SSBs in the first set of SSBs associated with the first PCI to be sent by the base station 110 to the UE 120, and the base station 110 (or another base station 110) may send second information (e.g., second ssb-PositionsInBurst) indicating one or more SSBs in the second set of SSBs associated with the second PCI to be sent by the base station 110 (or other base station 110) to the UE 120.
[0085] In some aspects, the information (e.g., the first information and / or the second information) may identify one or more SSB indexes of the set of SSBs (e.g., the set of SSB bursts) configured for the UE 120. One or more SSB indexes may identify the resource locations (e.g., time domain locations) where the SSBs will be sent (e.g., as described above, according to the pattern of the SSB positions). In some aspects, one or more SSB indexes may be identified by the SSB positions in the set of SSB bursts (e.g., ssb-PositionsInBurst). For example, the information may include a bitmap identifying the SSB indexes of the set of SSBs to be sent. In some aspects, the information (e.g., ssb-PositionsInBurst) may be carried in a system information message (e.g., SIB1 message) or in an RRC configuration (such as a serving cell common configuration (e.g., ServingCellConfigCommon) message).
[0086] As shown by reference numeral 710, the UE 120 may determine whether one or more SSBs to be sent (e.g., one or more SSB indexes) will conflict with PDCCH candidates (e.g., whether at least one of the one or more SSBs will conflict with PDCCH candidates). For example, the UE 120 may determine whether an SSB will conflict with one or more of multiple (e.g., two) REG sets of PDCCH candidates (e.g., multiple PDCCH transmission opportunities, multiple PDCCH repetitions, etc.). As an example, the UE 120 may determine whether an SSB will conflict with the first REG set of a PDCCH candidate, whether an SSB will conflict with the second REG set of a PDCCH candidate, and so on.
[0087] In some aspects, when at least one RE in which an SSB is transmitted overlaps with at least one RE in a REG set, the SSB may conflict with the REG set. As described above, multiple REG sets may be associated with corresponding TCI states. For example, a first REG set of PDCCH candidates may be associated with a first TCI state, and a second REG set of PDCCH candidates may be associated with a second TCI state.
[0088] In some aspects, the base station 110 may determine, in a manner similar to that described above, whether one or more SSBs to be transmitted (e.g., one or more SSB indices) will conflict with PDCCH candidates for the UE 120 (e.g., whether at least one SSB among the one or more SSBs will conflict with a PDCCH candidate). In this way, the base station 110 may determine the PDCCH candidates and / or the REG sets of the PDCCH candidates that the UE 120 will monitor.
[0089] As shown by reference numeral 715, the UE 120 may selectively monitor (e.g., monitor or avoid monitoring) PDCCH candidates at least in part based on determining whether at least one SSB among the one or more SSBs to be transmitted (e.g., one or more SSB indices) will conflict with a PDCCH candidate. For example, the UE 120 may selectively monitor one or more of the multiple REG sets at least in part based on determining whether at least one SSB among the one or more SSBs will conflict with one or more of the multiple REG sets of a PDCCH candidate. As an example, the UE 120 may selectively monitor the first REG set at least in part based on determining whether the SSB will conflict with the first REG set of the PDCCH candidate, selectively monitor the second REG set at least in part based on determining whether the SSB will conflict with the second REG set of the PDCCH candidate, and so on.
[0090] In some aspects, also as shown by reference numeral 715, the base station 110 may transmit in the PDCCH candidates at least in part based on determining whether the UE 120 will monitor the PDCCH candidates. For example, the base station 110 may transmit in one or more of the multiple REG sets at least in part based on determining whether the UE 120 will monitor one or more of the multiple REG sets of the PDCCH candidate. As an example, the base station 110 may transmit in the first REG set at least in part based on determining whether the UE 120 will monitor the first REG set of the PDCCH candidate, transmit in the second REG set at least in part based on determining whether the UE 120 will monitor the second REG set of the PDCCH candidate, and so on.
[0091] As described above, the base station 110 may determine whether the UE 120 will monitor a PDCCH candidate or a set of REGs for the PDCCH candidate, at least in part, based on determining whether an SSB will conflict with the PDCCH candidate and / or a set of REGs for the PDCCH candidate. In some aspects, the base station 110 may transmit (e.g., carry downlink control information) a PDCCH in the PDCCH candidate or in one or more sets of REGs for the PDCCH candidate (e.g., at least in part based on determining that there is no SSB conflict in the PDCCH candidate and / or in one or more sets of REGs for the PDCCH candidate).
[0092] Figure 7B An example in which the UE 120 selectively monitors a PDCCH candidate is shown. As Figure 7B shown, the PDCCH candidate may include a first set of REGs and a second set of REGs associated with different TCI states. In some aspects, the PDCCH candidate may include additional sets of REGs (e.g., a third set of REGs associated with a TCI state, etc.).
[0093] In some aspects, when an SSB (e.g., the SSB index indicated by ssb-PositionsInBurst) will conflict with the second set of REGs of the PDCCH candidate and will not conflict with the first set of REGs of the PDCCH candidate, the UE 120 may monitor the PDCCH candidate in the first set of REGs rather than in the second set of REGs (which is referred to herein as Technique 1). For example, as shown in Example 720, the SSB may conflict with the second set of REGs of the PDCCH candidate, but the SSB may not conflict with the first set of REGs of the PDCCH candidate. Accordingly, the UE 120 may monitor the PDCCH candidate in the first set of REGs (e.g., regardless of the conflict of the SSB with the second set of REGs), and may not monitor the PDCCH candidate in the second set of REGs (e.g., due to the conflict of the SSB with the second set of REGs). In this way, if only one set of REGs of the PDCCH candidate conflicts with the SSB, the UE 120 monitors the PDCCH candidate in other sets of REGs that do not conflict with the SSB. Accordingly, if the PDCCH candidate conflicts with one or more SSBs, the UE 120 does not discard the PDCCH candidate unless all sets of REGs of the PDCCH candidate conflict with one or more SSBs (e.g., overlap).
[0094] In some aspects, when the SSB conflicts with at least one of multiple REG sets, the UE 120 may not monitor PDCCH candidates (e.g., may not monitor PDCCH candidates in any of the multiple REG sets) (this is referred to as Technique 2 herein). For example, as shown in Example 725, the SSB may conflict with the second REG set of PDCCH candidates, but the SSB may not conflict with the first REG set of PDCCH candidates. Thus, the UE 120 may not monitor PDCCH candidates in the first REG set and the second REG set (e.g., due to the conflict of the SSB with the second REG set). In this way, if at least one REG set of PDCCH candidates conflicts with the SSB, the UE 120 does not monitor PDCCH candidates.
[0095] In some aspects, the UE 120 may receive (e.g., via an RRC message) from the base station 110 a configuration indicating whether the UE 120 will use Technique 1 or Technique 2 to determine whether to monitor PDCCH candidates. In some aspects, the UE 120 may determine whether the UE 120 will use Technique 1 or Technique 2 to determine whether to monitor PDCCH candidates based at least in part on the capabilities of the UE 120.
[0096] Figure 7C An example in which the UE 120 selectively monitors PDCCH candidates is shown. As Figure 7C shown, the PDCCH candidates may include a first REG set and a second REG set associated with different TCI states. In some aspects, the PDCCH candidates may include additional REG sets (e.g., a third REG set associated with a TCI state, etc.).
[0097] In addition, in Figure 7C the SSB to be transmitted (e.g., actually transmitted) may be associated with different SSB sets (e.g., different SSB burst sets). For example, one or more first SSBs to be transmitted (e.g., one or more first SSB indices) may be associated with a first SSB set, and one or more second SSBs to be transmitted (e.g., one or more second SSB indices) may be associated with a second SSB set. In some aspects, the SSB to be transmitted may be associated with additional SSB sets (e.g., a third SSB set, etc.). In some aspects, the first SSB set may be associated with a first TCI state that is also associated with the first REG set, and the second SSB set may be associated with a second TCI state that is also associated with the second REG set.
[0098] In some aspects, the first SSB set and the second SSB set can be associated with the same PCI. For example, the first SSB set and the second SSB set can be subsets of the SSB set associated with the serving cell. In this case, the base station 110 can send information indicating (e.g., using a single indication, such as a single ssb-PositionsInBurst parameter) the SSBs (e.g., SSB indices) in the SSB set to be sent for the serving cell. In some aspects, the indicated SSBs can be configured to be associated with the first SSB set or the second SSB set.
[0099] In some aspects, the first SSB set and the second SSB set can be associated with different PCIs. For example, the first SSB set can be associated with the serving cell PCI, and the second SSB set can be associated with the non-serving cell PCI (e.g., of the same component carrier). In this case, the base station 110 can send information indicating (e.g., using a first indication associated with the first PCI, such as a first ssb-PositionsInBurst parameter) the SSBs (e.g., SSB indices) in the first SSB set to be sent for the serving cell. Additionally, the base station 110 or another base station 110 can send information indicating (e.g., using a second indication associated with the second PCI, such as a second ssb-PositionsInBurst parameter) the SSBs (e.g., SSB indices) in the second SSB set to be sent for the non-serving cell.
[0100] In some aspects, when an SSB will conflict with a REG set of a PDCCH candidate, the UE 120 may not monitor the PDCCH candidate in the REG set regardless of whether the TCI state associated with the REG set is also associated with the SSB set including the SSB (this is referred to as Technique 3 herein). For example, as shown in Example 730, an SSB from a first SSB set (associated with a first TCI state) can conflict with a first REG set of a PDCCH candidate (associated with the first TCI state), and the SSB from the first SSB set can conflict with a second REG set of a PDCCH candidate (associated with a second TCI state). Thus, the UE 120 may not monitor the PDCCH candidate in the first REG set and may not monitor the PDCCH candidate in the second REG set (e.g., even if the second REG set is associated with a TCI state different from the first SSB set to which the conflicting SSB belongs).
[0101] In some aspects, when an SSB will conflict with a REG set of a PDCCH candidate and the TCI state associated with the REG set is not associated with the SSB set including the SSB, the UE 120 may monitor the PDCCH candidate in the REG set (which is referred to as Technique 4 herein). Conversely, when an SSB will conflict with a REG set of a PDCCH candidate and the TCI state associated with the REG set is also associated with the SSB set including the SSB, the UE 120 may not monitor the PDCCH candidate in the REG set. For example, as shown in Example 735, an SSB from a first SSB set (associated with a first TCI state) may conflict with a first REG set of a PDCCH candidate (associated with the first TCI state), and the SSB from the first SSB set may conflict with a second REG set of the PDCCH candidate (associated with a second TCI state). Accordingly, the UE 120 may not monitor the PDCCH candidate in the first REG set (e.g., because the first REG set is associated with the same TCI state as the first SSB set to which the conflicting SSB belongs), and may monitor the PDCCH candidate in the second REG set (e.g., because the second REG set is associated with a different TCI state from the first SSB set to which the conflicting SSB belongs).
[0102] In some aspects, the UE 120 may receive, from the base station 110 (e.g., via an RRC message), a configuration indicating whether the UE 120 will use Technique 3 or Technique 4 to determine whether to monitor a PDCCH candidate. In some aspects, the UE 120 may determine whether the UE 120 will use Technique 3 or Technique 4 to determine whether to monitor a PDCCH candidate based at least in part on the capabilities of the UE 120.
[0103] As noted above, Figures 7A - 7C is provided as an example. Other examples may be different from the example regarding Figures 7A - 7C described.
[0104] Figure 8 is a schematic diagram illustrating an example process 800, such as may be performed by a UE, in accordance with the present disclosure. Example process 800 is an example in which a UE (e.g., UE 120, etc.) performs operations associated with conflicts between PDCCH and SSB.
[0105] As Figure 8As shown, in some aspects, process 800 may include receiving information indicating a resource location where one or more SSBs in an SSB set will be transmitted (block 810). For example, a UE (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may receive information indicating a resource location where one or more SSBs in an SSB set will be transmitted (as described above).
[0106] As Figure 8 Further shown, in some aspects, process 800 may include determining whether at least one SSB among one or more SSBs will conflict with one or more of a plurality of REG sets of PDCCH candidates, the plurality of REG sets being associated with respective TCI states (block 820). For example, a UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may determine whether at least one SSB among one or more SSBs will conflict with one or more of a plurality of REG sets of PDCCH candidates (as described above). In some aspects, the plurality of REG sets are associated with respective TCI states.
[0107] As Figure 8 Further shown, in some aspects, process 800 may include selectively monitoring PDCCH candidates in one or more of the plurality of REG sets at least in part based on determining whether at least one SSB will conflict with one or more of the plurality of REG sets (block 830). For example, a UE (e.g., using antenna 252, DEMOD 254, MIMO detector 256, in receive processor 258, controller / processor 280, etc.) may selectively monitor PDCCH candidates in one or more of the plurality of REG sets at least in part based on determining whether at least one SSB will conflict with one or more of the plurality of REG sets (as described above).
[0108] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.
[0109] In a first aspect, the plurality of REG sets include a first REG set and a second REG set, and when at least one SSB will conflict with the second REG set and will not conflict with the first REG set, PDCCH candidates are monitored in the first REG set rather than in the second REG set.
[0110] In a second aspect, either alone or in combination with the first aspect, when at least one SSB will conflict with at least one of a plurality of REG sets, the PDCCH candidate is not monitored.
[0111] In a third aspect, either alone or in combination with one or more of the first and second aspects, when at least one SSB will conflict with the REG set of a PDCCH candidate, regardless of whether the TCI state associated with the REG set is also associated with the SSB set, the PDCCH candidate is not monitored in the REG set.
[0112] In a fourth aspect, either alone or in combination with one or more of the first to third aspects, when at least one SSB will conflict with the REG set of a PDCCH candidate and the TCI state associated with the REG set is not associated with the SSB set, the PDCCH candidate is monitored in the REG set.
[0113] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, when at least one SSB will conflict with the REG set of a PDCCH candidate and the TCI state associated with the REG set is also associated with the SSB set, the PDCCH candidate is not monitored in the REG set.
[0114] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the first REG set of the PDCCH candidate is associated with a first TCI state that is also associated with a first SSB set, and the second REG set of the PDCCH candidate is associated with a second TCI state that is also associated with a second SSB set.
[0115] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the first SSB set is associated with a first PCI, and the second SSB set is associated with a second PCI.
[0116] In an eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the received information includes: receiving first information associated with the first PCI indicating the resource location where the SSB in the first SSB set will be transmitted, and receiving second information associated with the second PCI indicating the resource location where the SSB in the second SSB set will be transmitted.
[0117] In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the first SSB set and the second SSB set are associated with the same PCI.
[0118] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, selectively monitoring PDCCH candidates in one or more of a plurality of REG sets is also at least partially based on RRC configuration or UE capabilities.
[0119] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the information is received in an SIB or RRC configuration.
[0120] Although Figure 8 illustrates example blocks of process 800, in some aspects, process 800 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks compared to those shown in Figure 8 In addition or alternatively, two or more of the blocks of process 800 may be executed in parallel.
[0121] Figure 9 is a schematic diagram illustrating an example process 900, such as performed by a base station, according to the present disclosure. Example process 900 is an example where a base station (e.g., base station 110, etc.) performs operations associated with conflicts between PDCCH and SSB.
[0122] As Figure 9 shown, in some aspects, process 900 may include: sending to the UE information indicating a resource location where one or more SSBs in an SSB set will be transmitted (block 910). For example, a base station (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.) may send to the UE information indicating a resource location where one or more SSBs in an SSB set will be transmitted (as described above).
[0123] As Figure 9 further shown, in some aspects, process 900 may include: determining whether the UE will monitor PDCCH candidates in one or more of a plurality of REG sets at least partially based on whether at least one of one or more SSBs will conflict with one or more of a plurality of REG sets of PDCCH candidates, the plurality of REG sets being associated with corresponding TCI states (block 920). For example, a base station (e.g., using transmit processor 220, receive processor 238, controller / processor 240, memory 242, etc.) may determine whether the UE will monitor PDCCH candidates in one or more of a plurality of REG sets at least partially based on whether at least one of one or more SSBs will conflict with one or more of a plurality of REG sets of PDCCH candidates (as described above). In some aspects, the plurality of REG sets are associated with corresponding TCI states.
[0124] As Figure 9 Figure 9 As further shown therein, in some aspects, process 900 may include: selectively transmitting in one or more of a plurality of REG sets based at least in part on determining whether a UE will monitor a PDCCH candidate in one or more of the plurality of REG sets of PDCCH candidates (block 930). For example, a base station (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.) may selectively transmit in one or more of the plurality of REG sets based at least in part on determining whether a UE will monitor a PDCCH candidate in one or more of the plurality of REG sets of PDCCH candidates (as described above).
[0125] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.
[0126] In a first aspect, the plurality of REG sets includes a first REG set and a second REG set, and when at least one SSB will conflict with the second REG set and will not conflict with the first REG set, the PDCCH candidate will be monitored in the first REG set rather than in the second REG set.
[0127] In a second aspect, alone or in combination with the first aspect, when at least one SSB will conflict with at least one of the plurality of REG sets, the PDCCH candidate will not be monitored.
[0128] In a third aspect, alone or in combination with one or more of the first and second aspects, when at least one SSB will conflict with the REG set of the PDCCH candidate, the PDCCH candidate will not be monitored in the REG set regardless of whether the TCI state associated with the REG set is also associated with the SSB set.
[0129] In a fourth aspect, alone or in combination with one or more of the first to third aspects, when at least one SSB will conflict with the REG set of the PDCCH candidate and the TCI state associated with the REG set is not associated with the SSB set, the PDCCH candidate will be monitored in the REG set.
[0130] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, when at least one SSB will conflict with the REG set of the PDCCH candidate and the TCI state associated with the REG set is also associated with the SSB set, the PDCCH candidate will not be monitored in the REG set.
[0131] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, a first REG set of PDCCH candidates is associated with a first TCI state, the first TCI state is further associated with a first SSB set, and a second REG set of PDCCH candidates is associated with a second TCI state, the second TCI state is further associated with a second SSB set.
[0132] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, a first SSB set is associated with a first PCI, and a second SSB set is associated with a second PCI.
[0133] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the transmission information includes: transmitting first information associated with the first PCI indicating a resource location where an SSB in the first SSB set will be transmitted, and transmitting second information associated with the second PCI indicating a resource location where an SSB in the second SSB set will be transmitted.
[0134] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the first SSB set and the second SSB set are associated with the same PCI.
[0135] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, determining whether a UE will monitor PDCCH candidates in one or more of a plurality of REG sets is further at least partially based on the RRC configuration for the UE or the UE's capabilities.
[0136] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the information is transmitted in an SIB or an RRC configuration.
[0137] Although Figure 9 example blocks of process 900 are shown, in some aspects, process 900 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks compared to those shown in Figure 9 In addition or alternatively, two or more of the blocks of process 900 may be executed in parallel.
[0138] A summary of some aspects of the present disclosure is provided below:
[0139] Aspect 1: A method for wireless communication performed by a user equipment (UE), comprising: receiving information indicating a resource location of one or more synchronization signal blocks (SSBs) in a set of SSBs to be transmitted therein; determining whether at least one of the one or more SSBs will conflict with one or more sets of multiple resource element groups (REGs) of physical downlink control channel (PDCCH) candidates, the multiple REG sets being associated with respective transmission configuration indicator (TCI) states; and selectively monitoring the PDCCH candidates in the one or more sets of the multiple REG sets at least partially based on determining whether the at least one SSB will conflict with the one or more sets of the multiple REG sets.
[0140] Aspect 2: The method according to aspect 1, wherein the multiple REG sets include a first REG set and a second REG set, and when the at least one SSB will conflict with the second REG set and will not conflict with the first REG set, the PDCCH candidate is monitored in the first REG set rather than in the second REG set.
[0141] Aspect 3: The method according to aspect 1, wherein when the at least one SSB will conflict with at least one of the multiple REG sets, the PDCCH candidate is not monitored.
[0142] Aspect 4: The method according to aspect 1, wherein when the at least one SSB will conflict with the REG set of a physical uplink control channel (PUCCH) candidate, the PDCCH candidate is not monitored in the REG set regardless of whether the TCI state associated with the REG set is also associated with the set of SSBs.
[0143] Aspect 5: The method according to aspect 1, wherein when the at least one SSB will conflict with the REG set of a PUCCH candidate and the TCI state associated with the REG set is not associated with the set of SSBs, the PDCCH candidate is monitored in the REG set.
[0144] Aspect 6: The method according to aspect 1, wherein when the at least one SSB will conflict with the REG set of a PDCCH candidate and the TCI state associated with the REG set is also associated with the set of SSBs, the PDCCH candidate is not monitored in the REG set.
[0145] Aspect 7: The method according to any one of Aspects 1 - 6, wherein the first REG set of the PDCCH candidates is associated with a first TCI state, the first TCI state is further associated with a first SSB set, and the second REG set of the PDCCH candidates is associated with a second TCI state, the second TCI state is further associated with a second SSB set.
[0146] Aspect 8: The method according to Aspect 7, wherein the first SSB set is associated with a first physical cell identifier (PCI), and the second SSB set is associated with a second PCI.
[0147] Aspect 9: The method according to Aspect 8, wherein receiving the information includes: receiving first information associated with the first PCI indicating a resource location where the SSB in the first SSB set will be transmitted; and receiving second information associated with the second PCI indicating a resource location where the SSB in the second SSB set will be transmitted.
[0148] Aspect 10: The method according to Aspect 7, wherein the first SSB set and the second SSB set are associated with the same physical cell identifier.
[0149] Aspect 11: The method according to any one of Aspects 1 - 10, wherein selectively monitoring the PDCCH candidates in the one or more of the plurality of REG sets is further at least partially based on radio resource control configuration or the capabilities of the UE.
[0150] Aspect 12: The method according to any one of Aspects 1 - 11, wherein the information is received in a system information block or a radio resource control configuration.
[0151] Aspect 13: A method for wireless communication performed by a base station, comprising: sending information indicating a resource location where one or more synchronization signal blocks (SSBs) in a set of SSBs will be transmitted to a user equipment (UE); determining whether the UE will monitor the physical downlink control channel (PDCCH) candidate in one or more sets of multiple resource element groups (REGs) of the PDCCH candidate based at least in part on whether at least one of the one or more SSBs will conflict with one or more sets of the multiple REG sets, the multiple REG sets being associated with respective transmission configuration indicator (TCI) states; and selectively transmitting in one or more sets of the multiple REG sets based at least in part on determining whether the UE will monitor the PDCCH candidate in one or more sets of the multiple REG sets of the PDCCH candidate.
[0152] Aspect 14: The method according to aspect 13, wherein the multiple REG sets include a first REG set and a second REG set, and when the at least one SSB will conflict with the second REG set and will not conflict with the first REG set, the PDCCH candidate will be monitored in the first REG set rather than in the second REG set.
[0153] Aspect 15: The method according to aspect 13, wherein when the at least one SSB will conflict with at least one of the multiple REG sets, the PDCCH candidate will not be monitored.
[0154] Aspect 16: The method according to aspect 13, wherein when the at least one SSB will conflict with the REG set of the PUCCH candidate, the PDCCH candidate will not be monitored in the REG set regardless of whether the TCI state associated with the REG set is also associated with the SSB set.
[0155] Aspect 17: The method according to aspect 13, wherein when the at least one SSB will conflict with the REG set of the PUCCH candidate and the TCI state associated with the REG set is not associated with the SSB set, the PDCCH candidate will be monitored in the REG set.
[0156] Aspect 18: The method according to aspect 13, wherein when the at least one SSB will conflict with the REG set of the PDCCH candidate and the TCI state associated with the REG set is also associated with the SSB set, the PDCCH candidate will not be monitored in the REG set.
[0157] Aspect 19: The method according to any one of Aspects 13 - 18, wherein the first REG set of the PDCCH candidates is associated with a first TCI state, the first TCI state is further associated with a first SSB set, and the second REG set of the PDCCH candidates is associated with a second TCI state, the second TCI state is further associated with a second SSB set.
[0158] Aspect 20: The method according to Aspect 19, wherein the first SSB set is associated with a first physical cell identifier (PCI), and the second SSB set is associated with a second PCI.
[0159] Aspect 21: The method according to Aspect 20, wherein transmitting the information includes: transmitting first information associated with the first PCI indicating a resource location where the SSB in the first SSB set will be transmitted; and transmitting second information associated with the second PCI indicating a resource location where the SSB in the second SSB set will be transmitted.
[0160] Aspect 22: The method according to Aspect 19, wherein the first SSB set and the second SSB set are associated with the same physical cell identifier.
[0161] Aspect 23: The method according to any one of Aspects 13 - 22, wherein determining whether the UE will monitor the PDCCH candidates in one or more of the plurality of REG sets is further at least partially based on the radio resource control configuration for the UE or the capabilities of the UE.
[0162] Aspect 24: The method according to any one of Aspects 13 - 23, wherein the information is transmitted in a system information block or a radio resource control configuration.
[0163] Aspect 25: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to one or more of Aspects 1 - 12.
[0164] Aspect 26: A device for wireless communication, comprising: a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of Aspects 1 - 12.
[0165] Aspect 27: An apparatus for wireless communication, comprising: at least one unit for performing the method according to one or more of Aspects 1 - 12.
[0166] Aspect 28: A non-transitory computer-readable medium storing code for wireless communication, the code comprising: instructions executable by a processor to perform the method according to one or more of Aspects 1-12.
[0167] Aspect 29: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising: one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more of Aspects 1-12.
[0168] Aspect 25: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to one or more of Aspects 13-24.
[0169] Aspect 26: A device for wireless communication, comprising: a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of Aspects 13-24.
[0170] Aspect 27: An apparatus for wireless communication, comprising: at least one unit for performing the method according to one or more of Aspects 13-24.
[0171] Aspect 28: A non-transitory computer-readable medium storing code for wireless communication, the code comprising: instructions executable by a processor to perform the method according to one or more of Aspects 13-24.
[0172] Aspect 29: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising: one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more of Aspects 13-24.
[0173] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the various aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the various aspects.
[0174] As used herein, the term "component" is intended to be broadly interpreted as hardware and / or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, software shall be broadly interpreted as instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, execution threads, processes, and / or functions, etc. As used herein, a processor is implemented in hardware and / or a combination of hardware and software. It will be apparent that the systems and / or methods described herein can be implemented in different forms of hardware and / or combinations of hardware and software. The actual specific control hardware and software code used to implement these systems and / or methods are not limitations of the various aspects. Thus, the operation and behavior of the systems and / or methods are not described herein with reference to specific software code - it is to be understood that the software and hardware can be designed at least in part based on the description herein to implement the systems and / or methods.
[0175] As used herein, depending on the context, meeting a threshold can refer to a value greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.
[0176] Although specific combinations of features are recited in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. In fact, many of these features can be combined in ways not recited in the claims and / or disclosed in the specification. Although each dependent claim listed below can directly refer to only one claim, the disclosure of the various aspects includes the combination of each dependent claim with any other claim in the set of claims. As used herein, the phrase "at least one" in reference to a list of items means any combination of those items, including a single member. As an example, "at least one of a, b, or c" is intended to cover a, b, c, a - b, a - c, b - c, and a - b - c, as well as any combination with multiples of the same element (e.g., a - a, a - a - a, a - a - b, a - a - c, a - b - b, a - c - c, b - b, b - b - b, b - b - c, c - c, and c - c - c, or any other ordering of a, b, and c).
[0177] None of the elements, acts, or instructions used in this document should be construed as critical or essential unless expressly described. Also, as used herein, the articles "a" and "an" are intended to include one or more items and may be used interchangeably with "one or more." Additionally, as used herein, the article "the" is intended to include one or more items referred to in conjunction with the article "the" and may be used interchangeably with "the one or more." Further, as used herein, the terms "set" and "group" are intended to include one or more items (e.g., related items, unrelated items, or a combination of related and unrelated items) and may be used interchangeably with "one or more." Where only one item is intended, the phrase "only one" or similar language is used. Also, as used herein, the terms "having," "possessing," "with," etc. are intended to be open-ended terms. Additionally, the phrase "based on" is intended to mean "at least partially based on" unless expressly stated otherwise. Further, as used herein, unless expressly stated otherwise (e.g., if used in combination with "either" or "only one of"), the term "or" when used in a series is intended to be inclusive and may be used interchangeably with "and / or."
Claims
1. A mobile station for wireless communication, comprising: a memory; and one or more processors coupled to the memory and configured to: receive information from a base station indicating a resource location where one or more synchronization signal blocks (SSBs) in a set of SSBs will be transmitted; and selectively monitor a plurality of resource element groups (REGs) sets based at least in part on whether at least one SSB among the one or more SSBs will conflict with one or more sets in a plurality of REG sets that repeat with a physical downlink control channel (PDCCH), wherein the plurality of REG sets includes a first REG set and a second REG set, and when the at least one SSB will conflict with the second REG set and will not conflict with the first REG set, the first REG set is monitored and the second REG set is not monitored.
2. The mobile station according to claim 1, wherein a first REG set among the plurality of REG sets is associated with a first transmission configuration indicator (TCI) state, the first TCI state is also associated with a first set of SSBs, and a second REG set among the plurality of REG sets is associated with a second TCI state, the second TCI state is also associated with a second set of SSBs.
3. The mobile station according to claim 2, wherein the first set of SSBs is associated with a first physical cell identifier (PCI), and the second set of SSBs is associated with a second PCI.
4. The mobile station according to claim 3, wherein the one or more processors for receiving the information are configured to perform the following: receive first information associated with the first PCI indicating a resource location where an SSB in the first set of SSBs will be transmitted; and receive second information associated with the second PCI indicating a resource location where an SSB in the second set of SSBs will be transmitted.
5. The mobile station according to claim 2, wherein the first set of SSBs and the second set of SSBs are associated with the same physical cell identifier (PCI).
6. A base station for wireless communication, comprising: a memory; and one or more processors coupled to the memory and configured to: send information to a mobile station indicating a resource location where one or more synchronization signal blocks (SSBs) in a set of SSBs will be transmitted; and Selectively transmit among the multiple sets of resource element groups (REGs) at least partially based on whether at least one of the one or more SSBs will conflict with one or more of the multiple sets of REGs that repeat with a physical downlink control channel (PDCCH), where the multiple sets of REGs include a first set of REGs and a second set of REGs, and when the at least one SSB will conflict with the second set of REGs and will not conflict with the first set of REGs, the base station will transmit in the first set of REGs rather than in the second set of REGs.
7. The base station according to claim 6, wherein, the first set of REGs among the multiple sets of REGs is associated with a first transmission configuration indicator (TCI) state, the first TCI state is also associated with a first set of SSBs, and the second set of REGs among the multiple sets of REGs is associated with a second TCI state, the second TCI state is also associated with a second set of SSBs.
8. The base station according to claim 7, wherein, the first set of SSBs is associated with a first physical cell identifier (PCI), and the second set of SSBs is associated with a second PCI.
9. The base station according to claim 8, wherein, the one or more processors for transmitting the information are configured to perform the following: transmit first information associated with the first PCI indicating a resource location where an SSB in the first set of SSBs will be transmitted; and transmit second information associated with the second PCI indicating a resource location where an SSB in the second set of SSBs will be transmitted.
10. The base station according to claim 7, wherein, the first set of SSBs and the second set of SSBs are associated with the same physical cell identifier (PCI).
11. A method of wireless communication performed by a mobile station, comprising: receiving, by the mobile station from a base station, information indicating a resource location where one or more SSBs in a set of synchronization signal blocks (SSBs) will be transmitted; and selectively monitoring, by the mobile station, the multiple sets of REGs at least partially based on whether at least one of the one or more SSBs will conflict with one or more of the multiple sets of REGs that repeat with a physical downlink control channel (PDCCH), where the multiple sets of REGs include a first set of REGs and a second set of REGs, and when the at least one SSB will conflict with the second set of REGs and will not conflict with the first set of REGs, the first set of REGs is monitored and the second set of REGs is not monitored.
12. A method of wireless communication performed by a base station, comprising: transmitting, by the base station to a mobile station, information indicating a resource location where one or more SSBs in a set of synchronization signal blocks (SSBs) will be transmitted; and The base station selectively transmits among the multiple sets of resource element groups (REGs) at least partially based on whether at least one of the one or more SSBs will conflict with one or more of the multiple sets of REGs that repeat with the physical downlink control channel (PDCCH), where the multiple sets of REGs include a first set of REGs and a second set of REGs, and when the at least one SSB will conflict with the second set of REGs and will not conflict with the first set of REGs, the base station will transmit in the first set of REGs rather than in the second set of REGs.