Multiuser Packet Encoding for Relay Node Delay Reduction
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Solution Overview
Problem
In wireless communication systems, multi-hop scenarios face delays and increased control-information overhead due to individual packet retransmissions and processing delays at relay nodes, which are not acceptable in delay-sensitive applications.
Innovation Solution
The implementation of multiuser packets, where data for multiple users with similar Quality of Service (QoS) requirements are combined and dual-encoded by the anchor base station, allowing signal forwarding devices to decode and transmit these packets without additional encoding, thereby reducing overhead and processing delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual packet retransmissions are performed at relay nodes, then reliability is improved, but delay increases and control-information overhead increases
Solution Approach 1:
The patent combines multiple individual user packets into a single multiuser packet that is transmitted once through the relay node. This merging approach maintains reliability by ensuring all users receive their data while eliminating multiple separate retransmission events, thereby reducing the cumulative delay and control-information overhead that would result from individual packet handling.
Solution Approach 2:
The relay node is designed to handle multiple users' data simultaneously within a single packet structure. By implementing universal packet processing capabilities, the relay can serve multiple users in one transmission event rather than processing each user's packets separately, thus improving efficiency without compromising individual user reliability requirements.
2Reliability
If individual packet retransmissions are performed at relay nodes, then reliability is improved, but control-information overhead increases
Solution Approach 1:
The patent merges control information for multiple users into a single multiuser packet structure. Instead of transmitting separate control headers and metadata for each individual packet, the system uses one unified control structure that manages multiple users' data, significantly reducing the total control-information overhead while maintaining the ability to reliably deliver each user's data.
3Loss of information
If data for multiple users are combined into a single packet, then control-information overhead is reduced, but device complexity increases
Solution Approach 1:
The multiuser packet is segmented into distinct user data portions, each with its own identification tags. This segmentation allows the relay node to process and route different user portions independently while maintaining the efficiency benefits of the combined packet structure, thereby managing complexity through organized modularity rather than monolithic processing.
4Productivity
If data for multiple users are combined into a single packet, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple users' data into a single transmitted packet, achieving productivity improvement by reducing the number of transmission events. The complexity is managed through structured packet organization that enables efficient processing, balancing the gains in data delivery efficiency against the increased processing requirements.
Data Source
AI summary
An origination device (e.g., a base station) combines and encodes first user data and second user data, having similar QoS requirements, to generate a multiuser packet. In some cases, the origination device dual-encodes the multiuser packet. The multiuser packet is transmitted to one or more signal forwarding devices that each serve at least one of the users associated with the data contained in the multiuser packet. The signal forwarding device decodes the multiuser packet to obtain the first and second user data. The signal forwarding device transmits at least one portion of the multiuser packet, as single-encoded signals, to one or more appropriate destination devices (e.g., UE devices).