Communication Apparatus Relay Order Control for Collision Reduction
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Solution Overview
Problem
Broadcast communication methods face inefficiencies due to redundant reception responses and potential communication collisions when destination nodes resend packets, leading to unreliable and redundant relay transmissions, especially in personal area networks where terminal apparatuses frequently receive data normally.
Innovation Solution
A communication system that includes first and second communication apparatuses with reception and transmission means to receive and change the relay order based on response data, ensuring that data is relayed only to apparatuses that have not completed communication, thereby reducing collisions and redundant transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If broadcast communication is used to transmit data to multiple reception apparatuses simultaneously, then data transmission efficiency is improved, but reception responses become redundant and communication reliability deteriorates
Solution Approach 1:
The invention segments the broadcast communication process into two distinct phases: a broadcast phase where data is transmitted to all reception apparatuses simultaneously for efficiency, and a unicast relay phase where only apparatuses that failed to receive the data properly resend it individually. This segmentation resolves the contradiction by maintaining the efficiency benefits of broadcast while eliminating the redundancy and reliability issues through selective unicast relaying.
Solution Approach 2:
The invention implements a feedback mechanism where reception apparatuses send reception responses to the transmission apparatus after receiving broadcast data. The transmission apparatus uses this feedback information to identify which apparatuses successfully received the data and which ones need relay assistance. This feedback loop enables the system to maintain broadcast efficiency while ensuring reliable delivery by targeting relay transmissions only to apparatuses that actually need them.
2Reliability
If reception apparatuses relay data to apparatuses that have not completed communication, then communication completeness is improved, but communication collisions occur and transmission reliability deteriorates
Solution Approach 1:
The invention performs preliminary identification of apparatuses that have not completed communication before initiating relay transmissions. The transmission apparatus uses reception responses to pre-determine which apparatuses need data relayed, and only then schedules relay transmissions to those specific apparatuses. This preliminary action prevents communication collisions by ensuring that relay transmissions are directed only to apparatuses that have not already received the data, eliminating redundant and conflicting transmissions.
Solution Approach 2:
The invention applies local quality by customizing the relay transmission behavior for each reception apparatus based on its individual reception status. Instead of a uniform relay approach, the system identifies which apparatuses successfully received the broadcast data and which ones need relay assistance, then applies different transmission strategies accordingly. This localized approach ensures that each apparatus receives data only when needed, preventing collisions while maintaining completeness.
3Adaptability or versatility
If all terminal apparatuses relay data regardless of reception status, then data delivery coverage is improved, but redundant transmission increases and energy consumption rises
Solution Approach 1:
The invention applies partial action by having only those reception apparatuses that actually need data relay participate in the relay process. Instead of all apparatuses relaying regardless of status, the system identifies the subset of apparatuses that failed to receive the broadcast data properly and directs relay transmissions only to those specific apparatuses. This partial approach maintains comprehensive data delivery coverage while eliminating redundant transmissions from apparatuses that already received the data, thereby reducing energy consumption.
Data Source
AI summary
This invention provides a communication system, a communication apparatus, a control method of the communication apparatus, and a computer-readable storage medium, which enable to increase the reliability of relay transmission and suppress redundant transmission.