Random Access MsgA Retransmission with Adaptive Resource Scheduling
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Solution Overview
Problem
Existing wireless communication networks face challenges in efficiently configuring resource allocation for message A (msgA) retransmissions during the random access (RA) procedure, leading to suboptimal performance in establishing connections with network nodes.
Innovation Solution
Adaptive transmission configuration for msgA in the RA procedure is enabled through dynamic or non-dynamic scheduling, allowing for flexible resource allocation for both initial and retransmission of msgA, including parameters such as redundancy version, preamble identifier, time-frequency resources, and transmission power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed resource allocation is used for msgA retransmissions, then resource allocation is simple, but transmission reliability deteriorates due to suboptimal performance in establishing connections
Solution Approach 1:
The patent implements dynamic resource allocation for msgA retransmissions where the network node can flexibly assign time-frequency resources based on current channel conditions and traffic load. The resource allocation is no longer fixed but adapts to changing network states, improving connection establishment success rate while managing complexity through structured dynamic scheduling mechanisms.
Solution Approach 2:
The patent changes key transmission parameters including redundancy version, preamble identifier, time-frequency resources, and transmission power for msgA retransmissions. By dynamically adjusting these parameters based on channel quality and network conditions, the system achieves higher reliability in connection establishment without requiring overly complex resource allocation schemes.
2Adaptability or versatility
If flexible resource allocation is implemented for msgA transmissions, then adaptability improves, but system complexity increases
Solution Approach 1:
The system employs dynamic scheduling where resource allocation parameters for msgA transmissions are adjusted in real-time based on channel conditions and network state. This dynamic approach provides high adaptability for different transmission scenarios while the structured nature of the scheduling mechanism keeps system complexity manageable through standardized procedures.
Solution Approach 2:
The patent enables flexible configuration of multiple transmission parameters including redundancy version, preamble identifier, time-frequency resources, and transmission power. By allowing dynamic changes to these parameters, the system achieves high adaptability for various msgA transmission scenarios while maintaining organized control through parameter-based management rather than structural complexity.
3Reliability
If multiple retransmission attempts are allowed, then transmission reliability improves, but time consumption increases
Solution Approach 1:
The patent implements periodic retransmission attempts with structured timing where msgA can be retransmitted multiple times if initial transmission fails. The periodic nature of these retransmissions, combined with adaptive timing based on channel conditions, improves transmission success rate while managing overall procedure duration through controlled retry mechanisms.
Solution Approach 2:
The system dynamically adjusts the timing and number of retransmission attempts based on channel conditions and network state. When channel conditions are poor, more retransmission opportunities are provided to improve reliability. When conditions are good, the procedure completes faster, reducing time loss. This dynamic adaptation balances reliability improvement against time consumption.
Data Source
AI summary
Various embodiments of the present disclosure provide a method for random access. The method which may be performed by a terminal device comprises performing a transmission of a message to a network node in a random access procedure. The transmission of the message may comprise transmission of a preamble and transmission of a payload on a shared channel. The method further comprises receiving a response message from the network node. In response to the response message, the terminal device may perform a retransmission of the payload on the shared channel to the network node according to retransmission configuration.