PUSCH Interruption and Rescheduling via Dual PDCCH Control
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Solution Overview
Problem
Existing wireless communication systems face limitations in communication flexibility and efficiency, particularly in managing uplink and downlink transmissions, which can be improved through enhanced signaling and control mechanisms.
Innovation Solution
Implementing a user equipment and base station apparatus with reception and transmission circuitry to handle physical downlink control channels and uplink shared channels, including mechanisms to stop or resume transmissions based on group-common PDCCH indications, and utilizing advanced 3GPP LTE and NR technologies for efficient resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the communication structure is simplified for ease of operation, then ease of operation is improved, but communication flexibility and efficiency deteriorate
Solution Approach 1:
The patent segments the control mechanism into two distinct PDCCH channels: a first PDCCH for initial PUSCH scheduling and a second group-common PDCCH for interrupt transmission indications. This segmentation allows the system to maintain simple operation for basic scheduling while adding flexibility through the separate interrupt indication channel, resolving the contradiction between ease of operation and communication flexibility.
2Device complexity
If traditional PDCCH scheduling is used, then device complexity is kept low, but communication efficiency deteriorates due to limited flexibility in interrupting transmissions
Solution Approach 1:
The patent introduces a group-common PDCCH as an intermediary control channel that mediates between the initial scheduling PDCCH and the PUSCH transmission. This intermediary enables efficient interrupt transmission by providing a dedicated control mechanism that operates independently from the original scheduling, thereby improving communication efficiency without significantly increasing device complexity.
Data Source
AI summary
A user equipment (UE) is described. The UE includes reception circuitry configured to receive a first physical downlink control channel (PDCCH) and a second PDCCH. The UE also includes transmission circuitry configured to transmit a physical uplink shared channel (PUSCH). Downlink control information (DCI) carried by the first PDCCH schedules the PUSCH. In a case that the second PDCCH is a group-common PDCCH, the transmission circuitry stops transmission of the PUSCH on resources indicated by the second PDCCH. In a case that the second PDCCH includes a rescheduling DCI, the transmission circuitry transmits the PUSCH on the resources indicated by the rescheduling DCI.