PUSCH OCC Sequencing Across Multiple Slots for Concurrent Uplink
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in resource utilization due to interference and reduced throughput caused by signal repetitions, particularly in scenarios where multiple devices transmit concurrently, leading to increased signaling overhead and reduced capacity.
Innovation Solution
Implementing orthogonal cover code (OCC) sequences across both time and frequency domains, with flexible application methods such as intra-symbol, intra-slot, and inter-slot applications, along with frequency hopping, to enable concurrent transmissions without interference, thereby optimizing resource use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal repetitions are used to ensure reliable transmission, then transmission reliability is improved, but resource utilization efficiency deteriorates due to increased interference and signaling overhead
Solution Approach 1:
Orthogonal cover code sequences are introduced as intermediary elements that enable multiple devices to share the same time-frequency resources for signal repetitions without causing interference. The OCC sequences act as a mediating mechanism that resolves the conflict between transmission reliability and resource utilization efficiency by providing orthogonal separation between concurrent transmissions.
Solution Approach 2:
The patent applies parameter changes by varying the orthogonal cover code sequences across different time slots, frequency resources, and repetition instances. By dynamically changing the OCC sequence parameters (such as sequence index, length, and application pattern), the system enables reliable repeated transmissions while maintaining efficient resource utilization through orthogonal separation.
2Productivity
If multiple devices transmit concurrently on the same resources, then system capacity is improved, but interference increases leading to reduced throughput
Solution Approach 1:
Orthogonal cover code sequences serve as an intermediary mechanism that enables multiple devices to transmit concurrently on the same time-frequency resources without causing harmful interference. The OCC sequences provide orthogonal separation that eliminates mutual interference between concurrent transmissions, thereby increasing system capacity without sacrificing throughput.
3Productivity
If orthogonal cover code sequences are applied across multiple slots, then resource utilization efficiency is improved, but device complexity increases due to flexible application methods
Solution Approach 1:
The patent applies segmentation by dividing the application of orthogonal cover code sequences into distinct patterns: intra-symbol application, intra-slot application, and inter-slot application. This segmentation allows the system to achieve high resource utilization efficiency through flexible multi-slot OCC application while managing device complexity by providing structured, modular implementation approaches with clearly defined application scopes and configurations.
Data Source
AI summary
Various aspects of the present disclosure relate to orthogonal cover code (OCC) sequence application for a transport block over multiple slots (TBoMS). An apparatus, such as a UE, receives first signaling that schedules a physical uplink shared channel (PUSCH) transmission that includes a transport block (TB) over a set of slots. The UE receives signaling that indicates one or more parameters associated with at least one OCC sequence. The UE applies the at least one OCC sequence to the PUSCH transmission based on the one or more parameters within respective slots of the set of slots, the at least one OCC sequence is applied to the PUSCH transmission for the respective slots of the set of slots, or both. The UE transmits the PUSCH transmission using the slots.