Wireless Data Distribution for Mobility Reliability
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Solution Overview
Problem
Wireless communication devices experience loss of network connection when highly mobile in areas with limited wireless network coverage, leading to potential loss of information during data reception.
Innovation Solution
A collaborative group of wireless devices is formed based on location, application type, and probability of transition to a no-coverage area, with a first portion of the data stream synchronized and additional portions distributed according to a modulation and coding scheme (MCS), and a mapping table broadcast for data exchange when the group transitions to a no-coverage area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless devices are highly mobile in areas with limited network coverage, then mobility freedom is improved, but network connection reliability deteriorates
Solution Approach 1:
The system performs preliminary actions by determining locations and probabilities of transition to no-coverage areas in advance, selecting collaborative groups before loss of network connection occurs, and pre-synchronizing data streams. This allows the system to prepare backup communication paths and data distributions before mobility causes connection loss, thereby maintaining reliability while preserving mobility freedom.
2Reliability
If data stream is transmitted to each wireless device individually, then data delivery reliability is improved, but system complexity increases
Solution Approach 1:
The system merges multiple individual data transmission operations into a unified collaborative group approach. By selecting groups of wireless devices with similar locations, application types, and transition probabilities, and by synchronizing data streams across the group, the system achieves reliable data delivery through coordinated group transmission rather than managing each device independently, thus reducing overall system complexity.
Solution Approach 2:
The system segments the data stream into multiple portions and distributes them to different wireless devices within the collaborative group according to their modulation and coding schemes. This segmentation allows reliable delivery through multiple paths while the access node manages a single synchronized stream, reducing the complexity of individual device management.
3Reliability
If multiple additional portions of data stream are sent to each device, then data delivery reliability is improved, but energy consumption increases
Solution Approach 1:
The system applies local quality by assigning different numbers of additional data portions to different wireless devices based on their individual modulation and coding schemes. Devices with higher MCS receive more portions for redundancy, while devices with lower MCS receive fewer portions, optimizing the balance between delivery reliability and energy consumption for each local device rather than uniformly distributing all portions to all devices.
Data Source
AI summary
In an embodiment, a location, a type of application, and a probability of transition to a no-coverage area are determined for each of a plurality of wireless devices in communication with an access node, and a collaborative group of wireless devices which have requested a data stream are selected. A first portion of the data stream is sent to each wireless device to synchronize the requested data stream, and at least one additional portion of the data stream is sent to each wireless device, where a number of the at least one additional portions sent to each wireless device is based on a modulation and coding scheme assigned to each wireless device. A mapping table is broadcast to the collaborative group, and the wireless devices exchange the additional portions of the data stream according to the mapping table when the collaborative group transitions to the no-coverage area.