Mobile Device Flow Control via Recommended Data Rate Feedback
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Solution Overview
Problem
Current wireless communication systems lack a protocol or methodology for flow control at the base station or network side, leading to inefficiencies and wastage of bandwidth and transmission power when mobile devices experience data rate limitations, often resulting in blind dropping of transport blocks or re-transmissions.
Innovation Solution
Implementing a system where user equipment identifies data congestion and transmits a recommended reduced data rate to the base station, allowing the base station to adjust the downlink data rate, thereby enabling the mobile device to process data effectively and reducing congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the base station transmits data at high data rates to mobile devices, then the throughput and data transmission efficiency is improved, but the mobile device cannot process the data effectively when running out of memory or processing capacity, leading to packet loss and wastage of bandwidth
Solution Approach 1:
The patent implements a feedback mechanism where the mobile device monitors its processing status and sends flow control indications to the base station when congestion is detected. The base station receives this feedback and adjusts the data transmission rate accordingly, creating a closed-loop control system that adapts to the mobile device's processing capacity in real-time.
Solution Approach 2:
The patent introduces dynamic flow control where the data transmission rate is not fixed but adjusts dynamically based on the mobile device's processing status. The base station modifies transmission parameters such as transport block size, modulation and coding scheme, or resource allocation based on flow control indications from the mobile device, enabling adaptive rate adjustment.
2Productivity
If the base station blindly drops transport blocks or RLC PDUs when the mobile device cannot process data, then the congestion at the mobile device is relieved, but bandwidth and transmission power are wasted due to re-transmissions
Solution Approach 1:
The patent applies preliminary action by having the mobile device proactively send flow control indications to the base station before congestion occurs or at the first sign of processing limitations. This allows the base station to prevent congestion rather than react to it, avoiding the need for re-transmissions and associated power wastage.
Solution Approach 2:
The patent implements feedback control where the mobile device continuously monitors its buffer status and processing capacity, sending flow control indications to the base station. This feedback loop enables the base station to adjust transmission rates proactively, preventing congestion and eliminating the need for blind packet dropping and subsequent re-transmissions.
3Device complexity
If no flow control protocol is implemented at the base station side, then the system complexity remains low, but bandwidth wastage and transmission power inefficiency occur when mobile devices experience data rate limitations
Solution Approach 1:
The patent implements self-service flow control where the mobile device autonomously monitors its own processing status and generates flow control indications without requiring complex network-side flow control algorithms. The mobile device serves itself by detecting congestion conditions and communicating them to the base station, which then adjusts transmission accordingly.
Solution Approach 2:
The patent introduces a simple feedback mechanism where the mobile device sends flow control indications to the base station based on its processing status. This minimal feedback approach avoids complex protocol implementations while effectively preventing bandwidth wastage through proactive rate adjustment.
Data Source
AI summary
Systems, methods, and apparatuses are disclosed to facilitate wireless communications. User equipment (UE), such as a mobile device, identifies data congestion and transmits a recommended data rate modification wireless signal (e.g., a recommended reduced data rate) to the base station that is transmitting data to the UE. The base station may reduce the data rate of the down link (DL) to the reduced data rate. The UE may then receive data from the base station at the reduced data rate. Therefore, flow control may be implemented at the base station side (e.g., sometimes referred to as the Network (NW) side) based upon the reduced data rate modification determined and transmitted by the UE to the base station. In this way, the data rate transmission to the UE can be reduced to allow the UE to successfully process received data and successfully perform its functions.