Multi-Link Packet Replication for Wireless Latency Jitter
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Solution Overview
Problem
Wireless communications in information handling systems face challenges due to unpredictable latency and latency jitter, particularly in noisy environments, which can degrade user experience in applications like gaming where low latency is critical.
Innovation Solution
Implementing dual-band simultaneous radios to transmit packets over different frequency channels, using multi-link operations with replicators and detectors to manage communication links, and configuring links based on jitter likelihood values to minimize latency and jitter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication is used to eliminate wires, then ease of operation is improved, but latency and latency jitter increase due to noisy environment and unpredictable signal propagation
Solution Approach 1:
The patent segments the communication path into multiple parallel wireless links (first link and second link) between devices. By dividing the single communication channel into multiple segments, the system can transmit replicated packets simultaneously over different wireless paths, reducing the impact of interference and jitter on any single link, thereby lowering overall latency for delay-sensitive traffic.
Solution Approach 2:
The patent implements preliminary action by replicating packets before transmission across multiple links. The replicator creates duplicate packets in advance and distributes them through different wireless links simultaneously. This pre-preparation ensures that at least one copy arrives timely even if some links experience interference or jitter, reducing effective latency for critical data.
2Speed
If multiple communication links are used to reduce latency, then speed is improved, but device complexity increases due to need for packet replication and link management
Solution Approach 1:
The patent introduces intermediary components (replicator and detector) that manage the complexity of multi-link operations. The replicator sits between the application and physical links, automatically duplicating packets for distribution. The detector receives packets from multiple links and reassembles them, shielding the application from the complexity of managing multiple wireless connections while achieving reduced latency.
Solution Approach 2:
The patent applies copying by creating duplicate packets that are transmitted simultaneously over multiple wireless links. Instead of managing complex error correction and retransmission protocols, the system simply replicates the data and sends copies through different paths. The detector selects the first arriving valid packet, simplifying the management of multi-link transmissions while improving speed and reliability.
3Reliability
If packets are transmitted over different frequency channels, then reliability is improved against interference, but use of energy increases due to multiple radio transmissions
Solution Approach 1:
The patent implements partial action by selectively applying multi-link transmission only to delay-sensitive traffic types (such as gaming data) rather than all communications. The system identifies which traffic requires low latency and applies the energy-intensive multi-link replication only to those packets, while standard traffic uses normal single-link transmission. This partial application reduces overall energy consumption while maintaining reliability for critical applications.
Data Source
AI summary
This disclosure provides systems, methods, and devices for network management. In a first aspect, a method of transmitting delay-sensitive data with multi-link operation includes receiving, at a first device, first data for transmission to a second device; packaging, by the first device, the first data for transmission to the second device in a first set of packets; packaging, by the first device, the first data for transmission to the second device in a second set of packets; transmitting, by the first device, at least a portion of the first set of packets on a first shared resource; and transmitting, by the second device, at least a portion of the second set of packets on a second shared resource. Other aspects and features are also claimed and described.