Accelerating Uplink ACK Packets in Encrypted Streams
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Solution Overview
Problem
Real-time applications face performance degradation due to feedback latency, such as ACK latency, in communication networks, especially when dealing with encrypted data payloads where conventional techniques like deep packet inspection are ineffective.
Innovation Solution
A computing device identifies and accelerates uplink acknowledgement (UL ACK) packets within an uplink data packet stream containing encrypted payloads by using a cross-layer API to receive information on packet length thresholds, DSCP values, and frequency analysis, and processes these packets in a high priority queue or alters their headers for accelerated processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If deep packet inspection is used to identify ACK packets, then ACK packets can be identified and accelerated, but it becomes ineffective when dealing with encrypted data payloads
Solution Approach 1:
The patent extracts and processes only the unencrypted header portions of packets, specifically looking for ACK packet indicators in the header without needing to inspect the encrypted payload. This allows ACK identification to work effectively with encrypted data by taking out the identification function from the encrypted portion of the packet.
Solution Approach 2:
The patent introduces an intermediary approach by using header information as a mediator to identify ACK packets when the payload is encrypted. Instead of directly inspecting the encrypted content, the system uses the unencrypted header as an intermediate indicator to determine packet type, bypassing the encryption barrier.
2Reliability
If every data packet requires an ACK before sending the next packet, then reliability is improved, but data throughput decreases due to waiting for acknowledgments
Solution Approach 1:
The patent implements selective feedback by identifying and prioritizing ACK packet processing, allowing the system to maintain reliability through acknowledgment while reducing the impact on throughput. The feedback mechanism is optimized to process ACKs efficiently without requiring waiting for every single acknowledgment before continuing transmission.
Solution Approach 2:
The patent changes the processing parameters for different packet types by identifying ACK packets and giving them different handling (accelerated processing) compared to regular data packets. This parameter change allows ACK packets to be processed with higher priority, maintaining reliability while improving overall system responsiveness and throughput.
3Reliability
If the sending computing device reduces transmission rate upon not receiving ACK, then reliability is maintained, but real-time application performance degrades
Solution Approach 1:
The patent applies partial action by selectively accelerating only ACK packet processing rather than all packet processing. This partial acceleration maintains the reliability mechanism for ACK receipt while minimizing the impact on real-time application performance, as only the critical acknowledgment packets receive priority handling.
Solution Approach 2:
The patent dynamically changes processing parameters based on packet type, applying different priority levels and processing speeds to ACK packets versus regular data packets. This parameter differentiation allows the system to maintain reliability for ACKs while preserving speed for real-time application data.
Data Source
AI summary
In embodiments of systems and methods for managing acknowledgement packets in an uplink data packet stream including secure or encrypted data packets, a computing device may identify uplink acknowledgement (UL ACK) packets within the uplink data packet stream, and may accelerate processing of the identified UL ACK packets. In some embodiments, UL ACK packets may be identified based on whether packet lengths of packets meet a packet length threshold or meet a packet length range. In some embodiments, UL ACK packets may be identified based on information for identifying such packets receiving via a cross-layer application program interface (API). In some embodiments, UL ACK packets based whether packets include a specified differentiated services field codepoint (DSCP) in a packet header portion that is not encrypted.