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US-12621853-B2 - Control resource set zero for reduced capability new radio devices

US12621853B2US 12621853 B2US12621853 B2US 12621853B2US-12621853-B2

Abstract

The present disclosure provides communication apparatuses and communication methods for implementation of Control Resource Set Zero (CORESET #0) for Reduced Capability (RedCap) New Radio Devices. The communication apparatuses include a communication apparatus which comprises a receiver, which in operation, receives a physical downlink control channel (PDCCH) on a control resource set zero (CORESET #0) of which time and frequency resources are defined based on a bandwidth configuration of reduced capacity user equipments (RedCap UEs), and receives a system information block type 1 (SIB1) physical downlink shared channel (PDSCH) which is scheduled based on the CORESET #0; and circuitry, which in operation, determines control information and parameters from the PDCCH on CORESET #0 to read SIB1 for initial access, handover, or beam failure recovery.

Inventors

  • Xuan Tuong TRAN
  • Akihiko Nishio
  • Shotaro MAKI
  • Hidetoshi Suzuki
  • Quan KUANG
  • Hongchao Li

Assignees

  • PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Dates

Publication Date
20260505
Application Date
20210218
Priority Date
20200417

Claims (11)

  1. 1 . A communication apparatus, comprising: a receiver, which in operation, receives a physical downlink control channel (PDCCH) on a control resource set zero (CORESET #0) of which time and frequency resources are defined based on a bandwidth configuration of reduced capacity user equipment (RedCap UE), and receives a system information block type 1 (SIB1) physical downlink shared channel (PDSCH) which is scheduled based on the CORESET #0; and circuitry, which in operation, determines control information and parameters-from the PDCCH on CORESET #0 to read SIB1, wherein, the RedCap UE supports a first bandwidth, which is used for configuring both non-RedCap UE and the RedCap UE, and is equal to or greater than a maximum bandwidth of the CORESET #0.
  2. 2 . The communication apparatus according to claim 1 , wherein the CORESET #0 for the RedCap UE is defined according to a table in clause 13 of TS 38.213.
  3. 3 . The communication apparatus according to claim 1 , wherein the CORESET #0 is a Rel-15 CORESET #0 that is partitioned into m equal or unequal subsets, m being greater 1.
  4. 4 . The communication apparatus according to claim 1 , wherein information indicating Rel-15 CORESET #0 and PDCCH monitoring occasions for the non-RedCap UE is used to present the CORESET #0 for the RedCap UE, the information comprising entries in ControlResourceSetZero and SearchSpaceZero IEs in a master information block (MIB).
  5. 5 . The communication apparatus according to claim 1 , wherein the circuitry is configured to read the SIB1 from a Rel-15 CORESET #0 for the non-RedCap UE if the communication apparatus is the non-RedCap UE or from the CORESET #0 for the RedCap UE if the communication apparatus is the RedCap UE.
  6. 6 . The communication apparatus according to claim 1 , wherein the RedCap UE supports a second bandwidth, which is used for configuring the RedCap UE, and is smaller than the maximum bandwidth of the CORESET #0.
  7. 7 . The communication apparatus according to claim 6 , wherein when the second bandwidth is supported, the frequency resources comprise at least one of a second number of physical resource blocks (PRBs) and a third number of PRBs, which are obtained by unevenly dividing a first number of PRBs indicated by a table, and the second number of PRBs and the third number of PRBs are smaller than the second bandwidth.
  8. 8 . The communication apparatus according to claim 1 , wherein the CORESET #0 for the RedCap UE comprises two or three consecutive orthogonal frequency division multiplexing (OFDM) symbols.
  9. 9 . The communication apparatus according to claim 1 , wherein the maximum bandwidth of the CORESET #0 is defined as a number of consecutive physical resource blocks (PRBs).
  10. 10 . A base station, comprising: circuitry, which in operation, configures a control resource set zero (CORESET #0) of which time and frequency resources are defined based on a bandwidth configuration of reduced capacity user equipment (RedCap UE), generates a physical downlink control channel (PDCCH) on the CORESET #0, and schedules a system information block type 1 (SIB1) physical downlink shared channel (PDSCH) based on the CORESET #0; and a transmitter, which in operation, transmits the PDCCH on CORESET #0 and the SIB1 PDSCH to a communication apparatus, wherein, the RedCap UE supports a first bandwidth, which is used for configuring both non-RedCap UE and the RedCap UE, and is equal to or greater than a maximum bandwidth of the CORESET #0.
  11. 11 . A communication method, comprising: receiving a CORESET #0 of which time and frequency resources are defined based on a minimum-bandwidth configuration of reduced capacity user equipment (RedCap UE), receiving a system information block type 1 (SIB1) physical downlink shared channel (PDSCH) which is scheduled based on the CORESET #0; and determining control information from the PDCCH on CORESET #0 to read the SIB1, wherein, the RedCap UE supports a first bandwidth, which is used for configuring both non-RedCap UE and the RedCap UE, and is equal to or greater than a maximum bandwidth of the CORESET #0.

Description

TECHNICAL FIELD The following disclosure relates to communication apparatuses and communication methods for implementing Control Resource Set Zero (CORESET #0) for Reduced Capability (RedCap) Devices, in particular CORESET #0 for RedCap New Radio (NR) devices. BACKGROUND New Radio (NR) is a new radio air interface developed by the 3rd Generation Partnership Project (3GPP) for the fifth generation (5G) mobile communications system. With great flexibility, scalability, and efficiency, 5G is expected to address a wide range of use cases including enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine type communications (mMTC). One important objective of 5G is to enable connected industries. 5G connectivity can serve as catalyst for next wave of industrial transformation and digitalization, which improve flexibility, enhance productivity and efficiency, reduce maintenance cost, and improve operational safety. Devices in such environment may include for example pressure sensors, humidity sensors, thermometers, motion sensors, accelerometers, actuators, etc. It is desirable to connect these sensors and actuators to 5G networks. 5G connectivity can also serve as catalyst for the next wave smart city innovations. For instance, small devices including wearables such as smart watches, rings, eHealth related devices, medical monitoring devices, reduced capacity (RedCap) devices etc. will benefit from improvements in 5G connectivity. However, there has been no discussion so far concerning CORESET #0 for RedCap devices. There is thus a need for communication apparatuses and methods that can solve the above mentioned issue. Furthermore, other desirable features and characteristics will become apparent from the subsequent detailed description and the appended claims, taken in conjunction with the accompanying drawings and this background of the disclosure. SUMMARY One non-limiting and exemplary embodiment facilitates implementation of CORESET #0 for RedCap devices in 5G NR based communications. In one aspect, the techniques disclosed herein provide a communication apparatus. For example, the communication apparatus can be a subscriber UE, which may be a normal (non-RedCap, or Rel-15/16/17, or later release) UE, a RedCap UE or other similar types of UE. The communication apparatus comprises a receiver, which in operation, receives a physical downlink control channel (PDCCH) on a control resource set zero (CORESET #0) of which time and frequency resources are defined based on a bandwidth configuration of reduced capability user equipments (RedCap UEs), and receives a system information block type 1 (SIB1) physical downlink shared channel (PDSCH) which is scheduled based on the CORESET #0; and circuitry, which in operation, determines control information and parameters from the PDCCH on CORESET #0 to read SIB1, message 2 (Msg2) PDSCH, as well as message 4 (Msg4) PDSCH for initial access, handover, or beam failure recovery. In another aspect, the techniques disclosed herein provide a communication apparatus. For example, the communication apparatus can be a base station or gNodeB (gNB) which comprises circuitry, which in operation, configures a control resource set zero (CORESET #0) of which time and frequency resources are defined based on a minimum bandwidth configuration associated with one or more UEs in a set of normal (non-RedCap) UEs and the RedCap UEs, generates a physical downlink control channel (PDCCH) on the CORESET #0, and schedules a system information block type 1 (SIB1) physical downlink shared channel (PDSCH) based on the CORESET #0; and a transmitter, which in operation, transmits the PDCCH, the SIB1 PDSCH, Msg2 PDSCH, as well as Msg4 PDSCH on CORESET #0 to a communication apparatus. In another aspect, the techniques disclosed herein provide a communication method. The communication method comprises receiving a CORESET #0 of which time and frequency resources are defined based on a minimum bandwidth configuration associated with one or more UEs in a set of normal (non-RedCap) UEs and RedCap UE, receiving a system information block type 1 (SIB1) physical downlink shared channel (PDSCH) which is scheduled based on the CORESET #0; and determining control information and parameters from the PDCCH on CORESET #0 to read the SIB1, Msg2 PDSCH, as well as Msg4 PDSCH for initial access, handover, or beam failure recovery. It should be noted that general or specific embodiments may be implemented as a system, a method, an integrated circuit, a computer program, a storage medium, or any selective combination thereof. Additional benefits and advantages of the disclosed embodiments will become apparent from the specification and drawings. The benefits and/or advantages may be individually obtained by the various embodiments and features of the specification and drawings, which need not all be provided in order to obtain one or more of such benefits and/or advantages. BRIE