Broadcast Transmission Format Adaptation for Mobile Resource Efficiency
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Solution Overview
Problem
Current Broadcast/Multicast Service (BCMCS) schemes in mobile communication systems do not adapt to changing surrounding environments, leading to inefficient use of radio resources due to fixed transmission formats during retransmissions, which waste resources and reduce reception capability.
Innovation Solution
Implementing a method that uses a fixed transmission format for initial data transmission and a variable transmission format for retransmissions, adjusting parameters such as Cyclic Prefix (CP) length and pilot-to-data tone power ratio (PDR) based on the number of retransmissions and environmental conditions, to optimize data throughput and resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed transmission format is used during retransmissions, then the transmission process is simple and easy to implement, but radio resources are wasted and reception capability is reduced
Solution Approach 1:
The patent applies dynamics by making the transmission format adjustable based on the retransmission counter value. The system transitions from a static fixed format to a dynamic format that changes according to the retransmission stage, optimizing radio resource usage at different transmission phases while maintaining implementation feasibility through predefined format configurations.
Solution Approach 2:
The patent implements parameter changes by modifying transmission format parameters (such as cyclic prefix length, pilot tone configuration, and data tone allocation) based on the retransmission counter. This allows the system to adapt radio resource allocation to the actual reception conditions, improving resource efficiency without requiring complete redesign of the transmission protocol.
2Device complexity
If a fixed transmission format is used during retransmissions, then the system complexity is reduced, but reception success rate deteriorates
Solution Approach 1:
The patent uses dynamics to adjust the transmission format based on the retransmission counter, enabling the system to optimize reception conditions at different transmission stages. This dynamic adaptation improves reception success rate by matching the transmission format to the actual channel conditions without significantly increasing system complexity, as the changes are confined to predefined format parameters.
Solution Approach 2:
The patent applies parameter changes by modifying specific transmission format parameters (cyclic prefix length, pilot-to-data tone power ratio, etc.) according to the retransmission counter value. This targeted parameter adjustment improves reception reliability by adapting to channel conditions while maintaining overall system simplicity through the use of standardized parameter sets.
3Loss of energy
If a variable transmission format is used for retransmissions, then radio resource efficiency is improved, but transmission and reception complexity increases
Solution Approach 1:
The patent implements parameter changes by adjusting specific transmission format parameters based on the retransmission counter, achieving radio resource efficiency improvements without requiring fundamental changes to the system architecture. The complexity increase is managed by using predefined parameter sets and standardized modification procedures.
Solution Approach 2:
The patent applies dynamics by making the transmission format adaptable based on retransmission stage, optimizing resource usage. The system manages the resulting complexity through structured format configurations and standardized adjustment mechanisms, balancing performance improvement with implementation feasibility.
4Reliability
If transmission format is adapted based on retransmission counter, then reception capability is improved, but processing complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying transmission format parameters according to the retransmission counter value, improving reception capability through adaptive formatting. The processing complexity is managed by using predefined parameter sets and standardized modification procedures that build upon existing system frameworks.
Solution Approach 2:
The patent uses dynamics to adapt the transmission format based on the retransmission stage, enhancing reception capability. The system manages the associated processing complexity through structured format configurations and efficient counter-based decision logic that integrates with existing transmission protocols.
Data Source
AI summary
A method and apparatus for transmitting a broadcast physical layer packet in a mobile communication system supporting multi-slot transmission and hybrid Automatic Repeat Request (H-ARQ) are provided. The method comprises initially transmitting the broadcast physical layer packet according to a fixed transmission format for at least one first slot interval and retransmitting the broadcast physical layer packet for at least one second slot interval using a variable transmission format different from the transmission format used in the first slot interval.