Multi-Network UE Buffer Management for Overscheduling Control
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Solution Overview
Problem
Existing wireless devices face buffer overflow and packet loss when connected to multiple networks due to uncoordinated data scheduling, particularly in MUSIM scenarios where networks are unaware of the UE's total scheduling load, leading to overscheduling and insufficient buffer capacity signaling, which current technologies have not adequately addressed.
Innovation Solution
The apparatus and methods implement a computerized mobile device with L1 and L2 buffer management logic, including virtual buffers, HARQ processing, and scaling weight computation to manage data distribution across multiple networks, ensuring no overflow or packet loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a user device connects to multiple networks simultaneously, then network coverage and service availability are improved, but buffer overflow and packet loss occur due to uncoordinated data scheduling
Solution Approach 1:
The patent segments the buffer into multiple network-specific buffer portions, each dedicated to handling data from a specific network. This segmentation allows independent management of data from different networks, preventing buffer overflow by ensuring that data from one network does not interfere with the buffer allocation for another network.
Solution Approach 2:
The patent implements dynamic buffer allocation where the buffer portion allocated to each network is adjusted based on real-time scheduling conditions, network priority, and data arrival rates. This dynamic adjustment enables the system to adapt to changing network conditions while maintaining reliable data transmission across multiple networks.
2Ease of operation
If networks schedule data independently without coordination, then network autonomy and operational simplicity are maintained, but overscheduling occurs leading to buffer overflow
Solution Approach 1:
The patent implements preliminary buffer allocation where buffer portions are pre-assigned to each network before data arrival. This preliminary action prevents overscheduling by ensuring that each network knows its allocated buffer capacity in advance, allowing networks to operate independently while respecting overall buffer constraints.
Solution Approach 2:
The patent employs feedback mechanisms where the device monitors buffer usage and communicates scheduling conditions back to the networks. This feedback enables networks to adjust their data transmission rates based on current buffer status, preventing buffer overflow while maintaining operational independence.
3Productivity
If buffer capacity is increased to handle multi-network data, then data throughput is improved, but device complexity and resource consumption increase
Solution Approach 1:
The patent segments the buffer into manageable network-specific portions, making buffer management less complex by treating each network's data separately. This segmentation allows efficient utilization of total buffer capacity while maintaining simple, modular management logic for each network portion.
Solution Approach 2:
The patent dynamically changes buffer allocation parameters based on network conditions, priority levels, and data characteristics. This parameter adjustment enables the system to optimize data throughput by allocating more buffer space to high-priority or high-rate networks while maintaining manageable complexity through standardized allocation rules.
4Reliability
If scaling weights are computed and signaled to networks, then coordinated buffer management is achieved, but signaling overhead and processing requirements increase
Solution Approach 1:
The patent uses scaling weights as compact parameters to convey buffer allocation information to networks. These scaling weights efficiently represent complex buffer management decisions in a concise format, reducing signaling overhead while maintaining reliable buffer overflow prevention through coordinated buffer management.
Data Source
AI summary
Apparatus and methods for improving throughput and reliability in a wireless network. In one embodiment, the apparatus and methods provide mechanisms for wireless user device buffer management that mitigate buffer overflow within the device due to overscheduling, such as from different networks with which the device is connected simultaneously. In one variant, a 3GPP-based signaling architecture from wireless device to the multiple networks is provided to enable user device-controlled management buffer overflow. In another variant, potentially buffer-demanding (e.g., HARQ) process management and prioritization rules are defined to avoid buffer overflow. In other variant, buffer size computation is provided considering the number of networks to which the wireless user device can connect.