UE-Driven Outer Coding Redundancy and Early Termination
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in determining redundancy and resource utilization for outer coding, leading to increased complexity and resource wastage at network entities due to suboptimal channel state information estimation and unnecessary parity symbol transmissions.
Innovation Solution
UEs are enabled to request redundancy and early termination of outer coding transmissions based on historical data, predicted traffic characteristics, and channel state information, reducing complexity and freeing up resources by sending feedback when successful decoding is achieved.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network entity determines redundancy and transmits parity symbols based on channel state information estimation, then reliability of data transmission is improved, but device complexity and resource utilization deteriorate due to suboptimal estimation and unnecessary transmissions
Solution Approach 1:
The patent inverts the traditional approach by having the UE (receiver) determine the amount of redundancy needed and send feedback to the network entity (transmitter). Instead of the network entity estimating channel state and deciding on redundancy, the UE measures the channel, calculates required parity symbols, and communicates this back to the network entity through uplink resources. This inversion transfers the computational burden from the network entity to the UE, reducing network entity complexity while maintaining transmission reliability.
Solution Approach 2:
The patent implements a feedback mechanism where the UE sends uplink messages to the network entity indicating the determined amount of redundancy and requested parity symbols. This feedback loop allows the network entity to transmit exactly the required amount of redundancy information without over-provisioning, optimizing resource utilization and eliminating unnecessary transmissions while ensuring reliable data reception.
2Reliability
If the network entity transmits full set of parity symbols to ensure successful decoding, then reliability is improved, but resource utilization deteriorates due to unnecessary transmissions when early decoding is achieved
Solution Approach 1:
The patent applies partial action by having the network entity transmit only the determined amount of parity symbols required for successful decoding, rather than transmitting the full set. The UE calculates the minimum redundancy needed based on channel conditions and sends this information as feedback. The network entity then transmits exactly this amount of parity symbols, avoiding the waste of energy and resources associated with transmitting excessive redundancy when the UE has already achieved successful decoding or when fewer symbols would suffice.
Solution Approach 2:
The patent introduces dynamic adaptation where the amount of redundancy transmitted is not fixed but varies based on real-time channel conditions and UE feedback. The UE continuously monitors channel state information and adjusts its redundancy requests accordingly. This dynamic approach allows the system to optimize the balance between reliability and resource efficiency for each transmission, preventing both under-provisioning and over-provisioning of parity symbols.
3Productivity
If the UE requests redundancy based on historical data and predicted traffic characteristics, then productivity is improved through efficient resource management, but device complexity increases at the UE
Solution Approach 1:
The patent applies preliminary action by having the UE perform channel measurement and redundancy determination before the actual data transmission. The UE uses historical data and predicted traffic characteristics to anticipate channel conditions and calculate the appropriate amount of redundancy needed in advance. This preliminary analysis allows the UE to send accurate feedback to the network entity, improving overall resource utilization efficiency while distributing the computational work to the UE rather than the network entity.
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit a message requesting redundancy for one or more source symbols of a later transmission, and may receive the source symbols and one or more parity symbols in response. If the UE successfully decodes the source symbols while the full set of requested parity symbols (or any retransmissions) are still being transmitted, or if the UE receives a quantity of symbols indicating a probability of successful decoding above a threshold, the UE may send feedback requesting early termination of the redundant transmissions. An amount of redundancy may be requested based on historical data, predicted traffic characteristics, as well as channel state information (CSI). Requests for early termination may also be sent after expiration of a timer or after a time window, and may include one or more retransmissions.