Wireless Packet Prioritization with Stateful Compression
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Solution Overview
Problem
In wireless communication networks, existing compression methods require data packets to be transmitted in the order they were compressed to maintain synchronization between compressors and decompressors, limiting the ability to prioritize packets and potentially impacting performance.
Innovation Solution
The method involves prioritizing data packets by scheduling them out of order for transmission, using techniques such as prioritization components, compression, and scheduling components to create separate groups of prioritized and unprioritized packets, and compressing them using different contexts or radio bearers to enhance both downlink and uplink performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data packets are transmitted in the order they were compressed to maintain synchronization, then synchronization between compressor and decompressor is maintained, but the ability to prioritize packets is limited
Solution Approach 1:
The patent segments data packets into two distinct groups: prioritized packets and non-prioritized packets. Each group is handled separately with its own compression context, allowing prioritized packets to be transmitted out of order without affecting the synchronization of the main data stream. This segmentation enables both synchronization maintenance and packet prioritization simultaneously.
Solution Approach 2:
The patent introduces an intermediary mechanism (separate compression context for prioritized packets) that mediates between the conflicting requirements of maintaining synchronization and enabling prioritization. The intermediary allows the system to handle prioritized packets differently while keeping the main compression stream intact.
2Productivity
If data packets are transmitted out of order to prioritize certain packets, then packet prioritization is improved, but synchronization between compressor and decompressor is lost
Solution Approach 1:
The patent divides the compression process into separate contexts: one for prioritized packets and one for non-prioritized packets. This allows prioritized packets to be transmitted out of order within their own context while the main compression stream maintains its order and synchronization.
Solution Approach 2:
The patent applies different compression qualities and rules to different packet types. Prioritized packets receive special handling with their own compression context, while non-prioritized packets follow the standard compression process. This local differentiation enables prioritization without compromising overall synchronization.
3Productivity
If separate compression contexts are used for prioritized and non-prioritized packets, then packet prioritization and synchronization are both maintained, but device complexity increases
Solution Approach 1:
The patent extracts prioritized packets from the main data stream and handles them with a separate compression context. This extraction isolates the complexity of managing out-of-order transmission to only the prioritized packet subset, while the main stream remains simple and synchronized.
Data Source
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AI summary
A method and apparatus for prioritizing data packets when stateful compression is enabled for wireless communications is disclosed. For example, the aspects include receiving a plurality of data packets scheduled in a first order for transmission. The described aspects further include prioritizing one or more data packets of the plurality of data packets as one or more prioritized data packets, each prioritized data packet being scheduled in an order for transmission different from the first order for transmission. The described aspects further include compressing one or more unprioritized data packets of the plurality of data packets into one or more compressed unprioritized data packets. The described aspects further include scheduling the one or more prioritized data packets and the one or more compressed unprioritized data packets in a second order for transmission, the second order differing from the first order.