Wireless User Device Buffer Management for Multi-Network Overflow
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Solution Overview
Problem
Current wireless networks face challenges in mitigating buffer overflow and packet loss, particularly in Multi-Universal Subscriber Identity Module (MUSIM) scenarios where user equipment (UE) connects to multiple uncoordinated networks, leading to excessive data exceeding the L1 and L2 buffer capacities.
Innovation Solution
The proposed solution involves a computerized mobile device equipped with digital processor apparatus, wireless interface apparatus for communication with multiple radio area networks, and storage with computer programs that establish data communication with network management entities. The device signals buffer management data to the networks, allowing for proportional scheduling and allocation of buffer resources to prevent overflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If user equipment connects to multiple uncoordinated networks simultaneously, then network connectivity and data throughput are improved, but buffer overflow and packet loss increase due to excessive data exceeding L1 and L2 buffer capacities
Solution Approach 1:
The patent segments the buffer management by dividing the L1 and L2 buffers into separate portions associated with different networks. The L1 buffer is divided into first and second portions for first and second networks respectively, and the L2 buffer is divided into first and second portions as well. This segmentation allows each network to be allocated a specific buffer portion, preventing buffer overflow when multiple networks transmit data simultaneously while maintaining overall data throughput capability.
2Reliability
If buffer resources are allocated proportionally to multiple networks, then buffer overflow is prevented, but device complexity increases due to additional buffer management mechanisms
Solution Approach 1:
The patent applies preliminary action by establishing buffer portions for different networks before data transmission occurs. The buffer allocation is configured in advance based on network identification, so that when data arrives from multiple networks, the buffers are already divided and ready to receive data according to pre-established proportions. This preliminary configuration simplifies the actual data reception process while preventing buffer overflow.
3Reliability
If the device signals buffer management data to networks, then proportional scheduling and buffer allocation are enabled, but communication overhead increases
Solution Approach 1:
The patent implements feedback by having the user equipment signal buffer management data to network nodes, which then adjust their scheduling based on the received information. The feedback loop includes the user equipment identifying itself with multiple networks, signaling buffer management data, receiving scheduling information, and adjusting buffer allocation accordingly. This feedback mechanism ensures accurate buffer allocation while the efficiency of the signaling protocol minimizes communication overhead.
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.