Conditional DCI Interpretation for OCC-Enabled Uplink Signaling
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently utilizing bits for downlink control information (DCI) transmissions due to increased information demands, leading to potential overhead and latency issues.
Innovation Solution
Implementing techniques for conditional interpretation of DCI transmissions, enabling or disabling orthogonal cover codes (OCC) and varying modulation and coding scheme (MCS) interpretations based on field values, to optimize resource utilization and reduce overhead and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If traditional DCI transmission methods are used to support increased information demands, then more control information can be transmitted, but overhead and latency increase
Solution Approach 1:
The patent applies dynamics by making the DCI format adaptable and configurable. Different DCI formats (0_0, 0_1, 1_0, 11) are defined with different field compositions and sizes, allowing the system to dynamically select the appropriate format based on operational conditions. The enablement of OCC operations is determined dynamically based on whether control resource set (CORESET) indexing is enabled, allowing flexible adjustment of DCI structure to balance information completeness against overhead and processing latency
Solution Approach 2:
The patent changes parameters of the DCI transmission system by introducing configurable fields and formats. The DCI message includes variable fields such as frequency domain resource assignment, time domain resource assignment, MCS, and OCC indicators, whose presence and interpretation depend on configuration parameters. This allows the system to adjust the information density and structure of DCI transmissions to optimize for different scenarios, reducing unnecessary overhead while maintaining required information transmission
2Adaptability or versatility
If more fields are included in DCI signaling to provide comprehensive control information, then control functionality is enhanced, but message overhead increases
Solution Approach 1:
The patent implements universality by designing DCI formats that can serve multiple functions through conditional field interpretation. The same DCI message structure can indicate both resource allocation and OCC operations depending on configuration. The OCC enablement indicator can serve dual purposes: indicating OCC operation enablement when CORESET indexing is enabled, and serving as part of the resource allocation structure when it is not enabled. This multi-functionality reduces the need for separate dedicated fields for different control functions
Solution Approach 2:
The patent uses copying by reusing existing field structures and interpretations across different DCI formats and scenarios. The frequency domain resource assignment field, time domain resource assignment field, and MCS fields are reused across multiple DCI formats (0_0, 01, 11, etc.) with different interpretations based on format type. This reuse of field structures allows comprehensive control functionality to be achieved without proportionally increasing message size, as the same bit patterns serve multiple control purposes
3Productivity
If OCC operations are enabled based on field conditions, then resource utilization is optimized, but processing complexity increases
Solution Approach 1:
The patent changes parameters by introducing conditional logic based on configuration states. The enablement of OCC operations is determined by the parameter state of CORESET indexing. When CORESET indexing is enabled, the DCI format includes specific indicators for OCC operations; when not enabled, those indicators are interpreted differently or omitted. This parameter-based conditional processing allows the system to optimize resource utilization through OCC operations only when the network configuration supports it, avoiding unnecessary processing complexity in configurations where OCC is not applicable
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive first control signaling including a plurality of fields associated with uplink communications of the UE. The UE may determine an enablement status of orthogonal cover code (OCC) operations for the uplink communications based on whether values of the plurality of fields satisfy an OCC enablement condition that comprises satisfaction of at least two thresholds associated with at least two respective fields of the plurality of fields. The UE may communicate a message in accordance with the enablement status of OCC operations.