Radio Device COT Selection Clarity
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Solution Overview
Problem
There is a need for a technique to resolve ambiguities in channel occupancy times (COTs) initiated by radio devices and network nodes in radio communication, particularly in scenarios where both UE-initiated and gNB-initiated COTs coexist, leading to confusion in determining the appropriate temporal radio resources for communication.
Innovation Solution
The technique involves determining whether a first COT is initiated by the radio device or a second COT is initiated by the network node, and communicating accordingly, allowing for clear selection and usage of temporal radio resources to avoid confusion and ensure deterministic behavior in multiple active COT scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If both UE-initiated COT and gNB-initiated COT are allowed to coexist, then spectrum utilization and communication flexibility are improved, but ambiguities and confusion in determining the appropriate COT for transmission arise
Solution Approach 1:
The patent segments the COT identification process by introducing distinct signaling mechanisms for UE-initiated and gNB-initiated COTs. Specifically, it uses different PUCCH resource indicator (PRI) values, uplink grant indications, and SFI (slot format indicator) configurations to clearly distinguish between the two types of COT initiations, eliminating ambiguity while maintaining both types simultaneously
Solution Approach 2:
The patent introduces an intermediary signaling layer between the physical COT initiation and the UE's transmission decision. This intermediary layer includes specific DCI formats, PUCCH resources, and RRC configurations that act as mediators to clearly indicate which COT type is active, resolving the identification ambiguity without restricting COT coexistence
2Productivity
If multiple COTs are allowed to overlap in time, then resource utilization efficiency is improved, but deterministic behavior becomes difficult to ensure
Solution Approach 1:
The patent applies preliminary action by configuring COT parameters, priorities, and transmission rules in advance through RRC signaling and DCI configurations. This pre-configuration establishes deterministic behavior frameworks that guide UE transmissions even when multiple COTs overlap, ensuring predictable outcomes while maintaining high resource utilization
Solution Approach 2:
The patent utilizes parameter changes by dynamically adjusting COT-related parameters such as priority levels, time resource allocations, frequency resource indicators, and transmission power settings based on the specific COT initiation type and current channel conditions. This allows deterministic control over transmission behavior in overlapping COT scenarios while optimizing resource utilization
Data Source
AI summary
A technique for radio communicating between a radio device (100) and network node (200) of a radio access network, RAN, using a temporal radio resource associated with a channel occupancy time, COT, is described. As to a method aspect of the technique, the radio device (100) determines (302) if a first COT (S01) is initiated by the radio device (100). The radio device (100) determines if a second COT (901) is initiated by the network node (200). The radio device (100) radio communicates (306) with the network node (200) in the temporal radio resource associated with the first COT (S01) or the second COT (901) depending on the determinations.