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JP-2026514440-A - Terminal devices, network devices, and methods

JP2026514440AJP 2026514440 AJP2026514440 AJP 2026514440AJP-2026514440-A

Abstract

Embodiments of this disclosure relate to the configuration and operation of a PBCH and CORESET #0 for operation on a dedicated spectrum below 5 MHz. A terminal device determines that communication between the terminal device and a network device is operating on a dedicated spectrum having a bandwidth smaller than a predetermined bandwidth. The network device transmits SSB on the PBCH to the terminal device. A set of resource elements in the PBCH having subcarrier number k is set to zero, the set of resource elements is in one or more resource blocks, and k is relative to the start of the SS/PBCH block, and k is in the range from 0 to a first predetermined number and/or from a second predetermined number to the total number of subcarriers in the PBCH. Resources can be saved by reusing resources in this way. [Selection Diagram] Figure 4A

Inventors

  • リアン リン
  • ワン ガン

Assignees

  • 日本電気株式会社

Dates

Publication Date
20260511
Application Date
20230331

Claims (20)

  1. A terminal device, The aforementioned terminal device, Determining that the communication between the terminal device and the network device is operating on a dedicated spectrum having a bandwidth smaller than a predetermined bandwidth, The network device receives a synchronization signal/physical broadcast channel (SS/PBCH) block on a PBCH (Physical Broadcast Channel), Here, the set of resource elements in the PBCH having subcarrier number k is set to zero, the set of resource elements is in one or more resource blocks, k is relative to the start of the SS/PBCH block, and k is in the range from 0 to a first predetermined number and/or from a second predetermined number to the total number of subcarriers in the PBCH, A processor configured to perform the following actions: Terminal device.
  2. The terminal device according to claim 1, wherein the predetermined bandwidth is 5 MHz and the total number of subcarriers within the PBCH is 240.
  3. Symbols corresponding to resource elements that are part of a common resource block that at least partially overlaps with the actual SS/PBCH block and are not used for SS/PBCH transmission are set to zero in OFDM symbols that at least partially overlap with the Orthogonal Frequency Division Multiplexing (OFDM) symbols to which the SS/PBCH block is transmitted, and where the actual SS/PBCH block includes resources of an SS/PBCH block having subcarrier numbers k ranging from a first predetermined number plus 1 to a second predetermined number minus 1. The terminal device according to claim 1 or 2.
  4. The terminal device according to any one of claims 1 to 3, wherein if a Physical Downlink Shared Channel (PDSCH) resource allocation overlaps with one or more resource blocks containing the resources of the actual SS/PBCH block, the one or more resource blocks containing the resources of the actual SS/PBCH block are unavailable to the PDSCH in the OFDM symbol from which the SS/PBCH block is transmitted.
  5. A terminal device, The aforementioned terminal device, Determining that the communication between the terminal device and the network device is operating on a dedicated spectrum having a bandwidth smaller than a predetermined bandwidth, The aforementioned network device receives a synchronization signal/physical broadcast channel (SS/PBCH) block on the PBCH, The subcarrier offset from the first subcarrier in the common resource block to the first subcarrier in the SS/PBCH block is determined, wherein the offset between the common resource block and the SS/PBCH block is defined in relation to the value of the subcarrier offset. A processor configured to perform the following actions: Terminal device.
  6. The terminal device according to claim 5, wherein, when the subcarrier offset is within a range of 0 to a first predetermined number, the offset is defined with respect to the subcarrier spacing (SCS) of the control resource set (CORESET) from the minimum resource block index of the CORESET to the minimum resource index of the common RB that overlaps with the reference resource block of the SS/PBCH block.
  7. The terminal device according to claim 5 or 6, wherein, if the subcarrier offset is within a range from a second predetermined number to a third predetermined number, the offset is defined with respect to the SCS of the CORESET from the minimum resource block index of the CORESET for the Type0-PDCCH CSS set to the minimum resource block index of the common RB that overlaps with the reference resource block of the SS/PBCH block plus 1.
  8. The aforementioned reference resource block is either the first resource block of the SS/PBCH block, or The aforementioned reference resource block is the third resource block of the SS/PBCH block. The terminal device according to claim 6 or 7.
  9. A terminal device, The aforementioned terminal device, Determining that the communication between the terminal device and the network device is operating on a dedicated spectrum having a bandwidth smaller than a predetermined bandwidth, Determining a subset of resource blocks from a control resource set, wherein the Physical Downlink Control Channel (PDCCH) and corresponding Demodulation Reference Signal (DMRS) resource elements of resource element groups having resource blocks not included in the subset of resource blocks are set to zero. A processor configured to perform the following actions: Terminal device.
  10. The aforementioned control resource set includes 24 resource blocks, and The aforementioned set of resource blocks includes a plurality of consecutive resource blocks starting from index 0, The terminal device according to claim 9.
  11. The terminal device according to claim 9 or 10, wherein, if the parameters are equal to all consecutive resource blocks, the PDCCH and the DMRS are mapped to all resource element groups within the subset of resource blocks from which the terminal device decodes the physical downlink control channel.
  12. The processor is connected to the terminal device, The system is further configured to perform a determination of the field length of the frequency domain resource allocation for downlink control information based on the size of the subset of resource blocks. The terminal device according to any one of claims 9 to 11.
  13. The number of resource blocks within the subset is as shown in the control resource set configuration, as described in any one of claims 9 to 12.
  14. The terminal device according to any one of claims 9 to 12, wherein the subset of resource blocks includes 15 resource blocks.
  15. The terminal device according to any one of claims 9 to 12, wherein the subset of resource blocks includes resource blocks from a first index to a second index, having the maximum resource block index of the control resource set that overlaps with the resource blocks of the SS/PBCH block.
  16. The terminal device according to claim 15, wherein the resource block of the SS/PBCH block is the last resource block of the SS/PBCH block.
  17. Network device, The aforementioned network device, Determining that communication between the terminal device and the network device is operating on a dedicated spectrum having a bandwidth smaller than a predetermined bandwidth, The terminal device is to transmit a synchronization signal/physical broadcast channel (SS/PBCH) block on the PBCH, Here, the set of resource elements in the PBCH having subcarrier number k is set to zero, the set of resource elements is in one or more resource blocks, k is relative to the start of the SS/PBCH block, and k is in the range from 0 to a first predetermined number and/or from a second predetermined number to the total number of subcarriers in the PBCH, A processor configured to perform the following actions: Network device.
  18. The network device according to claim 17, wherein the predetermined bandwidth is 5 MHz and the total number of subcarriers within the PBCH is 240.
  19. It is a method, In a terminal device, it is determined that the communication between the terminal device and the network device is operating on a dedicated spectrum having a bandwidth smaller than a predetermined bandwidth, The network device receives a synchronization signal/physical broadcast channel (SS/PBCH) block on the PBCH, Here, the set of resource elements in the PBCH having subcarrier number k is set to zero, and the set of resource elements is in one or more resource blocks, k is relative to the start of the SS/PBCH block, and k is in a range from 0 to a first predetermined number and/or from a second predetermined number to the total number of subcarriers in the PBCH. including, method.
  20. It is a method, In a terminal device, it is determined that the communication between the terminal device and the network device is operating on a dedicated spectrum having a bandwidth smaller than a predetermined bandwidth, The aforementioned network device receives a synchronization signal/physical broadcast channel (SS/PBCH) block on the PBCH, The subcarrier offset from the first subcarrier in the common resource block to the first subcarrier in the SS/PBCH block is determined, wherein the offset between the common resource block and the SS/PBCH block is defined in relation to the value of the subcarrier offset. including, method.

Description

Embodiments of this disclosure generally relate to the field of telecommunications, and more particularly to methods, apparatus, and computer-readable media for dedicated spectra. Several techniques have been proposed to improve communication performance. New Radio (NR) systems require a more efficient and flexible spectrum. For example, multi-carrier co-scheduling and dynamic spectrum sharing can enhance spectral efficiency and flexibility. Furthermore, NR can support narrower, dedicated spectra. Therefore, dedicated spectra are worth studying. The above and other objectives, features, and advantages of this disclosure will become more apparent through a more detailed description of some exemplary embodiments of this disclosure in the accompanying drawings. This is a schematic diagram of the subcarrier offset.This is a schematic diagram of the subcarrier offset. A schematic diagram of the Physical Broadcast Channel (PBCH) and the Physical Downlink Shared Channel (PDSCH) is shown. A schematic diagram of a communication environment in which the embodiments of this disclosure can be implemented is shown. The signaling flows for communication according to several embodiments of this disclosure are shown. The signaling flows for communication according to several other embodiments of this disclosure are shown. This is a schematic diagram of a channel according to some other embodiments of the present disclosure.This is a schematic diagram of a channel according to some other embodiments of the present disclosure. This is a schematic diagram of a subcarrier offset according to some other embodiments of the present disclosure.This is a schematic diagram of a subcarrier offset according to some other embodiments of the present disclosure. This is a flowchart illustrating an exemplary method according to one embodiment of the present disclosure. This is a flowchart illustrating an exemplary method according to one embodiment of the present disclosure. This is a flowchart illustrating an exemplary method according to one embodiment of the present disclosure. This is a flowchart illustrating an exemplary method according to one embodiment of the present disclosure. This is a simplified block diagram of an apparatus suitable for carrying out embodiments of the present disclosure. Throughout the drawing, identical or similar reference numerals represent identical or similar elements. Herein, the principles of this disclosure will be described with reference to several exemplary embodiments. These embodiments are provided for illustrative purposes only and should be understood as helpful to those skilled in the art in understanding and implementing this disclosure, without implying any limitation on the scope of this disclosure. The disclosures described herein can be implemented in various ways other than those described below. In the following description and claims, unless otherwise defined, all technical and scientific terms used herein have the same meanings as those generally understood by those skilled in the art to which this disclosure pertains. As used herein, the term “terminal device” refers to any device with wireless or wired communication capabilities. Examples of terminal devices include user equipment (UE), personal computers, desktops, mobile phones, cellular phones, smartphones, personal digital assistants (PDAs), portable computers, tablets, wearable devices, Internet of Things (IoT) devices, Ultra-Reliable and Low Latency Communications (URLLC) devices, Internet of Everything (IoE) devices, and Machine Type (MTC) devices. Communication equipment, vehicle-mounted equipment for V2X communications (where X means pedestrian, vehicle, or infrastructure/network), equipment for Integrated Access and Backhaul (IAB), spacecraft or aerial vehicles within Non-Terrestrial Networks (NTN), including High Altitude Platforms (HAP) with satellites and Unmanned Aircraft Systems (UAS), Augmented Reality (AR), Mixed Reality (MR), and Virtual Reality (VR) Examples include, but are not limited to, Extended Reality (XR) devices, which include various types of reality such as Reality; Unmanned Aerial Vehicles (UAVs), which are aircraft without human pilot intervention, commonly known as drones; High Speed Train (HST) onboard equipment; Image capture devices such as digital cameras, sensors, game consoles, and music storage and playback devices; or Internet devices that enable wireless or wired internet access and browsing. The "terminal device" may also have "multicast/broadcast" capabilities and support public safety and mission-critical, V2X applications, transparent IPv4/IPv6 multicast distribution, IPTV, smart TV, radio services, wireless software distribution, group communications, and IoT applications. Furthermore, it may incorporate one or more subscriber identity modules (SIMs), also known as multi-SIMs. The term "terminal device" may be used interchangeably with UE, mobile station, subscriber station, mobile termi