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JP-7857253-B2 - Device for detecting and processing PDCCH

JP7857253B2JP 7857253 B2JP7857253 B2JP 7857253B2JP-7857253-B2

Inventors

  • 李 建民
  • 陳 仁賢
  • 羅 立中

Assignees

  • 宏碁股▲分▼有限公司

Dates

Publication Date
20260512
Application Date
20230620
Priority Date
20220103

Claims (10)

  1. A communication device that processes physical downlink (DL) control channel (PDCCH) reception, At least one storage device, At least one processing circuit is coupled to at least one memory device, and the at least one memory device comprises at least one processing circuit that stores instructions, At least one of the processing circuits executes the following instruction, namely: A command to perform uplink (UL) transmission in a network serving cell, After performing the UL transmission, the system is configured to execute an instruction to detect the PDCCH for the serving cell according to a set of multiple search spaces (SS), Before performing the UL transmission, the communication device, A command to receive at least one indicator of DL control information (DCI) from the aforementioned network, The system executes an instruction to cease detecting the PDCCH for the serving cell according to a plurality of SS sets by at least one of the indicators , A communication device comprising multiple SS sets, each accompanied by a group index .
  2. The communication device detects the PDCCH for the serving cell in accordance with one of the following commands, i.e., the command is: A command to detect the PDCCH for the serving cell according to a plurality of SS sets having the group index by at least one of the indicators, The communication device according to claim 1, comprising: an instruction to cease detecting the PDCCH for the serving cell for a period of time according to a plurality of SS sets by at least one of the indicators.
  3. An instruction to cease detecting the PDCCH for the serving cell according to a plurality of SS sets over a certain period of time by at least one of the indicators is: When the multiple SS sets are predetermined SS sets, a command to detect the PDCCH for the serving cell according to the multiple SS sets over a certain period of time by at least one indicator, The communication device according to claim 2, further comprising: an instruction by at least one indicator to cease detecting the PDCCH for the serving cell in accordance with the plurality of SS sets for a certain period of time if the plurality of SS sets are not the predetermined SS set.
  4. The communication device according to any one of claims 1 to 3, wherein the UL transmission includes a scheduling request (SR) or a physical random access channel (PRACH).
  5. The communication device according to any one of claims 1 to 4, wherein the UL transmission has hybrid automatic repetitive request (HARQ) feedback, the HARQ feedback is a negative acknowledgment (NACK), or the HARQ feedback corresponds to a priority index.
  6. The communication device according to claim 5, wherein the value of the priority index is 1.
  7. The communication device according to any one of claims 1 to 6, wherein the UL transmission has a physical uplink shared channel (PUSCH), and the PUSCH corresponds to a priority index.
  8. The communication device according to claim 7, wherein the value of the priority index is 1.
  9. The communication device according to claim 1, wherein the plurality of SS sets are configured with at least one identity.
  10. The communication device according to any one of claims 1 to 9, wherein, after receiving the PDCCH, the communication device determines whether or not to detect a second PDCCH for the serving cell according to at least one second SS set by at least one indicator in the DCI.

Description

This invention relates to a device for detecting and processing a physical downlink control channel (PDCCH). The Long-Term Evolution (LTE) system, supporting the Third Generation Partnership Project (3GPP®) Rel-8 standard and/or 3GPP® Rel-9 standard, is being developed by 3GPP® as a successor to the General-Purpose Mobile Communications System (UMTS) to further enhance the performance of UMTS and meet the increasing needs of users. The LTE system includes a new radio interface and a new radio network architecture that provides high data rates, low latency, packet optimization, and improved system capacity and coverage. LTE Advanced (LTE-A) systems, as their name suggests, are an evolution of LTE systems. LTE-A systems aim for faster switching between power states, improving performance at the edge of Advanced Node B (eNB) coverage and increasing peak data rates and throughput. LTE-A systems include advanced technologies such as carrier aggregation (CA), multipoint coordinated (CoMP) transmit/receive, uplink (UL) multiple input multiple output (UL-MIMO), and license-assisted access (LAA) (e.g., using LTE). To further enhance LTE-A systems, next-generation wireless access networks (NG-RANs) are being developed. NG-RANs include one or more next-generation Node B (gNB) architectures and feature characteristics such as wider operating bandwidth, different neurology for different frequency ranges, high-capacity MIMO, and advanced channel coding. Power consumption remains a critical issue for user equipment (UE). Various configurations of UEs are being discussed to reduce UE power consumption and extend UE standby/usage time. Unlike conventional proposals, the detection of the physical downlink (DL) control channel (PDCCH) is improved in this invention to reduce UE power consumption. Therefore, to solve the above-mentioned problems, the present invention provides a device for detecting and processing physical downlink (DL) control channels (PDCCH). This is achieved by a communication device that detects and processes a PDCCH according to the following independent claims. Dependent claims relate to corresponding additional developments and improvements. As will become clearer from the detailed description below, the communication device for processing physical downlink (DL) control channel (PDCCH) reception described in the claims comprises at least one storage device; and at least one processing circuit coupled to the at least one storage device, wherein the at least one storage device stores instructions. The at least one processing circuit is configured to execute the following instructions: namely, an instruction to change from the first active bandwidth portion (BWP) of a network serving cell to the second active BWP of the serving cell according to at least one first indicator; and an instruction to determine, after changing to the second active BWP, whether or not to detect the PDCCH for the serving cell according to at least one set of search spaces (SS). This is a schematic diagram of a wireless communication system according to an example of the present invention.This is a schematic diagram of a communication device according to an example of the present invention.This is a flowchart of a process according to an example of the present invention.This is a schematic diagram of a modification of BWP according to an example of the present invention.This is a flowchart of a process according to an example of the present invention.This is a flowchart of a process according to an example of the present invention.This is a flowchart of a process according to an example of the present invention. Figure 1 is a schematic diagram of a wireless communication system 10 according to an example of the present invention. In short, the wireless communication system 10 consists of a network and multiple communication devices. The wireless communication system 10 can support time-division duality (TDD) mode, frequency-division duality (FDD) mode, TDD-FDD joint operation mode, non-terrestrial network (NTN) mode, or license-assisted access (LAA) mode. That is, the network and communication devices may communicate with each other via FDD carriers, TDD carriers, authorized carriers (authorized serving cells), and/or unauthorized carriers (unauthorized serving cells). Furthermore, the wireless communication system 10 may support carrier aggregation (CA). That is, the network and communication devices may communicate with each other via multiple serving cells (e.g., multiple service carriers), including a primary cell (e.g., primary component carrier) and one or more secondary cells (e.g., secondary component carriers). Figure 1 simply uses a network and communication equipment to illustrate the structure of the wireless communication system 10. In practice, the network may be a Universal Terrestrial Radio Access Network (UTRAN) including at least one Node B (NB) in a Universal Mobile Communications System (UMTS). For example, the