DCI Scheduling Multiple PDSCH and PUSCH Channels
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Solution Overview
Problem
Current wireless communication systems, particularly in the New Radio (NR) system, face limitations in scheduling multiple Physical Downlink Shared Channels (PDSCH) or Physical Uplink Shared Channels (PUSCH) via a single Downlink Control Information (DCI) format, which hinders semi-static and semi-persistent scheduling, as well as dynamic retransmissions.
Innovation Solution
The implementation of a data transmitting and receiving method in terminal equipment that supports scheduling multiple PDSCH/PUSCH via one DCI format, enabling semi-static and semi-persistent scheduling, and dynamic retransmissions by using a data receiving apparatus with specific units for receiving and processing DCI, and a data transmitting apparatus for transmitting PUSCH, which includes configuration parameters for scheduling and repetition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If one DCI format schedules only one PDSCH/PUSCH, then the scheduling mechanism is simple and well-defined, but it cannot support semi-static scheduling or semi-persistent scheduling efficiently, and requires multiple DCI formats for different scheduling types
Solution Approach 1:
The patent makes a single DCI format capable of performing multiple scheduling functions by introducing a configurable parameter K that indicates the number of PDSCHs/PUSCHs to be scheduled. This allows one DCI format to serve both dynamic scheduling and semi-static/semi-persistent scheduling needs, eliminating the requirement for separate DCI formats for different scheduling types.
Solution Approach 2:
The patent introduces dynamic configurability within the DCI format through parameters such as K (number of scheduled channels) and repetition factors. These parameters can be adjusted based on scheduling requirements, allowing the system to adapt between scheduling modes without changing the fundamental DCI format structure.
2Productivity
If multiple PDSCH/PUSCH are scheduled via one DCI, then scheduling efficiency and adaptability improve, but the complexity of interpreting and processing DCI increases for terminal equipment
Solution Approach 1:
The patent segments the scheduling information into structured fields within the DCI format, including a resource indication field that specifies which PDSCHs/PUSCHs are scheduled, and separate fields for configuration parameters. This structured segmentation helps terminal equipment parse and process the information systematically, reducing processing complexity despite scheduling multiple channels.
Solution Approach 2:
The patent pre-configures certain scheduling parameters and relationships in the DCI format structure, such as the mapping between resource indication values and specific PDSCH/PUSCH configurations. This preliminary structuring allows terminal equipment to quickly interpret the scheduling intent without performing complex real-time calculations.
3Reliability
If separate DCI formats are used for dynamic scheduling and semi-persistent scheduling, then each scheduling type can be optimized independently, but the number of DCI formats increases and terminal power consumption increases due to blind decoding of multiple formats
Solution Approach 1:
The patent consolidates multiple scheduling functions into a single DCI format, which eliminates the need for terminal equipment to perform blind decoding across multiple different DCI formats. The unified format maintains reliable scheduling through proper configuration of fields such as HARQ process indicators and redundancy versions, while significantly reducing power consumption by limiting blind decoding to one format type.
4Adaptability or versatility
If one DCI format schedules multiple PDSCH/PUSCH with different configurations, then resource allocation flexibility improves, but the information field size and complexity of DCI increases
Solution Approach 1:
The patent uses a resource indication field that references pre-defined resource configurations rather than transmitting complete configuration data for each scheduled PDSCH/PUSCH. This copying approach allows flexible resource allocation across multiple channels while keeping the DCI information volume manageable by referring to previously established configuration patterns.
Data Source
AI summary
A data receiving and transmitting apparatus, configured in a terminal equipment, includes: a first receiver configured to receive first downlink control information and/or third downlink control information, the first downlink control information being used to schedule PDSCHs (Physical downlink shared channel), the third downlink control information being used to schedule PUSCH (Physical uplink shared channel) s; and a second receiver configured to receive one or more than one PDSCH in the PDSCHs scheduled by the first downlink control information, and/or, a transmitter configured to transmit one or more than one PUSCH in the PUSCHs scheduled by the third downlink control information, and a third receiver configured to receive a PDSCH configuration including a first configuration parameter used for configuring the number of repetitions and/or a SPS (Semi-persistent scheduling) configuration including a second configuration parameter used for configuring the number of repetitions.