Multi-band Transmission Packet Discarding for Parallel Data
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Solution Overview
Problem
Conventional multi-band parallel transmission methods fail to improve transmission efficiency for high-rate services like real-time video calls and virtual reality due to data packet disorder across multiple frequency bands.
Innovation Solution
A method and apparatus for multi-band transmission that involves receiving data packets across multiple frequency bands, using block acknowledgment requests to determine and mark unreceived packets as discarded, ensuring only received or discarded packets are processed, thereby maintaining correct data packet processing and enhancing transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data packets in a same traffic stream are transmitted in parallel using multiple frequency bands, then transmission efficiency is improved, but data packet disorder occurs
Solution Approach 1:
The patent segments the acknowledgment process by frequency band, maintaining separate state tracking for each band while enabling parallel transmission. Each frequency band's data packets are independently acknowledged, allowing parallel transmission to proceed while preventing disorder through band-specific state management.
Solution Approach 2:
The patent applies different state markings (first state, second state, etc.) to data packets based on their specific frequency band and receipt status. This local differentiation allows the system to track and manage packets from different bands independently, resolving the packet order issue while maintaining parallel transmission efficiency.
2Reliability
If block acknowledgment requests are sent for each frequency band, then correct packet reception is ensured, but signaling overhead increases
Solution Approach 1:
The patent makes the block acknowledgment mechanism universal across multiple frequency bands. A single BAR frame structure is used for all bands, and the receive end can process acknowledgments for multiple bands systematically. This multi-functional approach ensures reliable packet reception across all bands while using a standardized signaling format that reduces overall overhead compared to separate acknowledgment mechanisms for each band.
3Productivity
If unreceived data packets are marked as discarded, then processing efficiency is improved, but risk of discarding valid packets increases
Solution Approach 1:
The patent performs preliminary marking of unreceived packets with specific states (first state, second state, etc.) based on frequency band and receipt status, rather than immediately discarding them. This preliminary action allows the system to efficiently identify and process discarded packets while maintaining a safety mechanism where packets are only definitively discarded after confirming they are indeed unreceived, thus improving processing efficiency without compromising reliability.
Data Source
AI summary
A multi-band transmission method implemented by a receive end, where the method includes: receiving data packets in parallel from a transmit end using M frequency bands, where the data packets belong to a same traffic stream; receiving a BAR from the transmit end, where the BAR carries an SSN and requests a receiving state of a data packet from the transmit end on the mth frequency band; marking an mth state for an unreceived data packet whose SN is before the SSN; marking one or more unreceived data packets with a discarded state when determining the one or more unreceived data packets are marked with a first state, a second state, . . . , and an Mth state; determining whether there are data packets with consecutive SNs; and if yes, submitting a data packet that is in the received state and in the data packets with the consecutive SNs.