Radio Node Selecting Relative Timing for HARQ Feedback
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Solution Overview
Problem
Current radio communication networks, such as those with LTE and NR architectures, have limited flexibility in the timing of responses to transmissions, with predetermined timing relations for ACK/NACK and HARQ feedback, which can restrict network performance and interoperability.
Innovation Solution
A node in a radio communication network is designed to select a relative timing for sending a second transmission from a plurality of predetermined timing choices, allowing for flexible response times and mechanisms, independent of actual time values, to enhance reaction speed and adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If predetermined timing relations are used for ACK/NACK and HARQ feedback (as in LTE and NR architectures), then network interoperability and standardization are improved, but network flexibility and adaptability are worsened
Solution Approach 1:
The patent applies dynamics by making the response timing flexible rather than fixed. The node can dynamically select from multiple predetermined relative timing choices (e.g., different k values for PUCCH/PUSCH timing) depending on communication conditions, while still operating within standardized frameworks. This resolves the contradiction by allowing the system to be both standardized (using predetermined choices) and flexible (selecting among them dynamically).
Solution Approach 2:
The patent changes the timing parameter from a fixed value to a selectable set of values. By defining multiple predetermined relative timing choices and allowing selection based on communication conditions, the system maintains standardization through predetermined options while achieving flexibility through parameter variation. This directly addresses the contradiction between reliability (standardization) and adaptability (flexibility).
2Device complexity
If fixed response timing is used for HARQ feedback transmissions, then system complexity is reduced and standardization is improved, but reaction speed and performance are worsened
Solution Approach 1:
The system dynamically adjusts response timing based on communication conditions while maintaining a predetermined set of options. This allows faster reaction speeds when conditions permit (by selecting shorter timing values) without significantly increasing system complexity, as the choices are still drawn from predetermined standardized options.
Solution Approach 2:
By allowing the timing parameter to vary among predetermined choices rather than being fixed, the system can optimize reaction speed for different scenarios. The complexity increase is minimal since the variations are constrained to standardized predetermined options, thus resolving the contradiction between speed and complexity.
3Adaptability or versatility
If predetermined timing choices are provided for selecting response transmission time, then adaptability and flexibility are improved, but device complexity increases
Solution Approach 1:
The patent segments the timing selection into discrete predetermined choices (e.g., different k values) rather than requiring continuous optimization. This segmentation reduces the complexity of the selection mechanism while maintaining adaptability, as the node only needs to select from aĉé set of standardized options rather than compute optimal timing continuously.
Solution Approach 2:
The use of predetermined parameter choices allows the system to achieve adaptability through simple parameter selection rather than complex real-time optimization. The device complexity is managed by constraining the parameter space to predetermined standardized values, thus resolving the contradiction between flexibility and complexity.
Data Source
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AI summary
A node for a radio communication network is described, said node being arranged for a communication mechanism comprising the reception of a first transmission and the subsequent sending of a second transmission in response to said first transmission, wherein said node is furthermore arranged to perform a selecting process for selecting a relative timing for sending said second transmission from among a plurality of predetermined relative timing choices.