Unified DCI Format for Multi-Service Scheduling
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing radio resources and beam management in multi-beam and multi-connectivity scenarios, leading to suboptimal performance and increased complexity in next-generation radio access networks.
Innovation Solution
The implementation of advanced radio access network architectures and protocols that enable dynamic bandwidth adaptation, multi-beam management, and multi-connectivity configurations, utilizing features like CSI-RS, beam sweeping, and flexible bandwidth parts to optimize resource allocation and beam selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple DCI formats are used to support multiple services with different QoS requirements, then service differentiation and QoS support are improved, but DCI format complexity and processing overhead increase
Solution Approach 1:
The patent applies universality by designing a unified DCI format that can serve multiple services with different QoS requirements. The single DCI format includes configurable fields that can be adapted to support different service types (e.g., eMBB, URLLC, mMTC) without requiring separate dedicated formats for each service, thereby reducing overall DCI format complexity while maintaining service differentiation capability
Solution Approach 2:
The patent utilizes parameter changes by introducing configurable parameters and fields within the DCI format that can be dynamically adjusted based on service requirements. Key parameters include service type indicators, QoS parameter fields, and configurable resource allocation parameters that can be modified to support different services, allowing the same DCI format structure to adapt to varying service needs without increasing fundamental format complexity
2Productivity
If dynamic resource allocation is implemented for multiple services, then resource utilization efficiency is improved, but scheduling complexity and processing time increase
Solution Approach 1:
The patent applies segmentation by dividing the resource allocation process into distinct phases and components. The DCI format is segmented into different field sections (resource allocation fields, QoS parameters, service type indicators) that can be independently processed. This segmentation allows the scheduling complexity to be managed through modular processing of individual fields rather than handling all parameters simultaneously, reducing overall processing complexity while maintaining dynamic resource allocation efficiency
Solution Approach 2:
The patent implements preliminary action by pre-configuring certain resource allocation parameters and QoS parameters through higher-layer signaling (RRC) before dynamic scheduling occurs. This preliminary configuration establishes baseline parameters that reduce the complexity of real-time scheduling decisions, as only certain dynamic parameters need to be adjusted during actual resource allocation rather than all parameters being negotiated in real-time
3Adaptability or versatility
If QoS parameters are included in DCI for each service, then service-specific QoS control is improved, but DCI message size and processing overhead increase
Solution Approach 1:
The patent applies local quality by including QoS parameters selectively based on service type and specific scheduling requirements rather than including all possible QoS parameters for all services uniformly. The DCI format includes configurable QoS fields that are activated or deactivated locally depending on the service being scheduled, allowing QoS control capability to be maintained where needed while minimizing unnecessary parameter inclusion that would increase overall message size
Solution Approach 2:
The patent implements partial action by including only the essential QoS parameters needed for each specific service type in the DCI format, rather than including all possible QoS parameters for every service. The DCI message includes a subset of QoS parameters that are sufficient for the particular service being scheduled, reducing message size while maintaining adequate QoS control capability for each service category
4Reliability
If beam management is enhanced for multi-beam scenarios, then connection reliability is improved, but device complexity and power consumption increase
Solution Approach 1:
The patent applies merging by combining beam management functions with the resource allocation and scheduling functions in the DCI format. Beam-related parameters (such as beam identifiers, beam quality indicators, and beam selection commands) are integrated into the existing DCI structure rather than being handled by separate dedicated beam management signaling. This merging reduces overall device complexity by consolidating multiple functions into a unified signaling mechanism while maintaining connection reliability through coordinated beam and resource management
Data Source
AI summary
A wireless device receives, from a base station, one or more radio resource control messages comprising configuration parameters, for a cell. The configuration parameters comprise a first downlink control information (DCI) format and second DCI format associated with a first search space and the second DCI format associated with a second search space. The wireless device monitors for a first DCI on the first search space based on a first DCI size of the first DCI format associated with the first search space. The format of the first DCI is the first DCI format or the second DCI format. The wireless device monitors for a second DCI on the second search space based on a second DCI size of the second DCI format associated with the second search space. The format of the second DCI is the second DCI format.