Multi-Carrier DCI Bit Group Segmentation for Non-Dynamic Transmission Control
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Solution Overview
Problem
Current wireless communication systems, such as LTE and 5G, face challenges in efficiently scheduling Physical Downlink Shared Channels (PDSCHs) and Physical Uplink Shared Channels (PUSCHs) across multiple carriers using a single Downlink Control Information (DCI), as each PDSCH requires separate DCI for scheduling, limiting flexibility and increasing bandwidth consumption.
Innovation Solution
The proposed method involves using a single DCI to enable or disable non-dynamic transmissions on multiple serving cells by employing K bit groups that correspond to K parameter group sets, allowing for flexible activation or release of DL SPS and uplink configured grants, thereby improving spectral efficiency and reducing signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a single DCI schedules PDSCH or PUSCH on multiple carriers, then spectral efficiency is improved and signaling overhead is reduced, but the complexity of DCI format and protocol architecture increases
Solution Approach 1:
The DCI is segmented into multiple independent bit groups, where each bit group corresponds to a specific parameter group set and serves a specific function (e.g., activation, release, or validation control). This segmentation allows the DCI to handle multiple carriers and parameter sets without requiring a completely new complex format, as each bit group can be independently interpreted and processed.
Solution Approach 2:
The DCI format is designed with multi-functionality to handle various scheduling scenarios. The same DCI structure with K bit groups can accommodate different numbers of carriers, different parameter group sets, and different activation/release scenarios. This universal design reduces the need for multiple specialized DCI formats, thereby managing complexity while maintaining versatility.
2Productivity
If a single DCI activates or releases DL SPS or uplink configured grants on multiple carriers, then system efficiency is improved and control signaling overhead is reduced, but the complexity of protocol architecture increases
Solution Approach 1:
Multiple activation or release operations for different carriers and parameter group sets are merged into a single DCI transmission. Instead of sending separate DCIs or higher-layer signaling for each activation/release operation, the patent combines all these operations into one unified DCI with multiple bit groups, each targeting specific parameter group sets. This merging dramatically reduces control signaling overhead while maintaining the ability to independently control each carrier's SPS or configured grants.
Solution Approach 2:
The K bit groups in the DCI act as intermediaries between the base station's scheduling decisions and the multiple parameter group sets. Each bit group serves as a mediator that translates the base station's activation/release intent into specific actions for the corresponding parameter group set, enabling efficient multi-carrier control without direct complex interactions between all components.
3Adaptability or versatility
If multiple DCIs are used to schedule PDSCHs on multiple carriers, then scheduling flexibility is maintained, but bandwidth consumption increases
Solution Approach 1:
The patent transitions from a one-dimensional approach (one DCI per carrier) to a multi-dimensional approach where a single DCI operates across multiple dimensions (multiple carriers, multiple parameter group sets). The K bit groups provide a structured dimensional framework that allows the single DCI to maintain scheduling flexibility for each carrier while reducing overall bandwidth consumption through consolidated signaling.
Data Source
AI summary
A node first receives a first signaling, the first signaling is used to determine K parameter group sets, and each of the K parameter group sets comprising at least one first-type parameter group is used to configure a non-dynamic transmission; then receives a first DCI, the first DCI comprises K bit groups; the K bit groups correspond one-to-one with the K parameter group sets; any of the K bit groups is used to enable or disable a validation of the non-dynamic transmission; a given bit group in the K bit groups being used to enable or disable a validation of the non-dynamic transmission is unrelated to a value of a bit group other than the given bit group in the K bit groups; the present application improves the activation or release of the non-dynamic transmission under multicarrier scheduling to enhance system flexibility.