Base Station Buffer State Estimation for VoLTE Resource Allocation
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Solution Overview
Problem
In wireless communication systems, particularly in VoLTE environments, the delay in uplink radio resource allocation due to competition among multiple terminals can lead to deteriorated voice service quality and reduced user capacity, as existing methods rely on explicit requests for resource allocation, which can result in delayed data transmission and reception.
Innovation Solution
A method and device where a base station estimates the buffer state of a terminal, allocates uplink radio resources based on this estimation, and transmits the allocated resource information, even without an explicit request, to prevent delays and improve resource allocation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the base station waits for explicit resource allocation requests from terminals, then resource allocation accuracy is improved, but resource allocation delay increases
Solution Approach 1:
The base station performs preliminary resource allocation by estimating buffer states of terminals before explicit requests are made. The scheduler proactively allocates uplink radio resources based on estimated buffer state values, preventing delay while maintaining allocation accuracy through subsequent adjustments when actual requests arrive.
Solution Approach 2:
The system cushions against potential resource allocation delays by maintaining estimated buffer state information in advance. When a terminal does send a request, the base station already has preliminary allocation information ready, cushioning the terminal from experiencing delay while preserving the ability to adjust for accurate allocation.
2Reliability
If the base station performs resource allocation for all terminals, then service quality is improved, but system complexity increases
Solution Approach 1:
The base station applies different processing levels to different terminals based on their characteristics and service requirements. For terminals requiring high reliability like VoIP, the system performs detailed buffer state estimation and proactive allocation. For other terminals, standard request-based allocation suffices, reducing overall system complexity while maintaining service quality where needed.
Data Source
AI summary
The present disclosure generally relates to a radio resource allocation of a base station in a wireless communication system, and an operating method of a base station comprises the steps of: determining a buffer state estimation value of a terminal on the basis of whether the terminal is in an uplink talk spurt; allocating an uplink radio resource for the terminal on the basis of the buffer state estimation value; and transmitting information on the allocated uplink radio resource to the terminal.