Multi-Cell Uplink Resource Allocation via Unified DCI
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently indicating resource allocation information for uplink shared channels across multiple network entities, leading to suboptimal scheduling and increased signaling overhead.
Innovation Solution
The described techniques involve a downlink control information (DCI) message that indicates resource allocation for uplink shared channels using resource block bits and resource block set bits, allowing for scheduling across multiple network entities in accordance with resource allocation Type 2.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate DCI messages are used for each network entity, then scheduling flexibility is improved, but signaling overhead increases
Solution Approach 1:
The patent combines multiple DCI messages into a single unified DCI message that schedules uplink shared channel resources across multiple network entities (TRPs). This single DCI message contains resource allocation information that applies to multiple TRPs simultaneously, reducing the number of separate signaling messages while maintaining the ability to schedule resources flexibly across different network entities.
Solution Approach 2:
The DCI message structure is designed to be universal and applicable to multiple network entities. The resource allocation fields in the DCI message can be interpreted and applied by multiple TRPs, allowing a single signaling message to serve multiple scheduling functions across different network entities without requiring entity-specific messages.
2Measurement precision
If multiple sets of resource allocation bits are included for each network entity, then scheduling precision is improved, but device complexity increases
Solution Approach 1:
The resource allocation information in the DCI message is segmented into different fields that can be selectively applied to different network entities. The DCI message contains resource block assignments and other allocation parameters that are divided into manageable segments, allowing precise scheduling for each TRP while keeping the overall message structure organized and manageable.
Solution Approach 2:
The DCI message includes resource allocation fields that provide sufficient information for scheduling across multiple TRPs, using a unified set of bits that covers all entities. Rather than including separate complete resource allocation sets for each TRP, the message uses a partial or shared set of allocation parameters that can be applied to multiple entities, reducing complexity while maintaining scheduling precision.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described for uplink shared channel resource allocation for multi-cell scheduling. A user equipment (UE) may receive a downlink control information (DCI) message including a first set of bits and a second set of bits defining resource allocation across multiple network entities, as well as indicating that uplink shared channel messages to a first network entity and a second network entity are scheduled according to a resource allocation type. The first set of bits may indicate one or more resource block indices and the second set of bits may indicate one or more resource block set indices. The UE may transmit the uplink shared channel messages to the first network entity and the second network entity according to the first set of bits and the second set of bits.