Relay Node Buffer Status Reporting for LTE-A Resource Allocation
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Solution Overview
Problem
In the LTE-A system, the introduction of a relay node (RN) causes data transmission delays and makes it difficult to maintain Quality of Service (QoS) due to ineffective buffer and memory management, leading to radio resource wastage.
Innovation Solution
The RN generates and transmits parameters to improve data transmission, including information on the number of user equipment, bit rates, buffer status, and memory capacity, to the DeNB for optimized radio resource allocation and QoS management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If relay node is introduced to extend coverage and support more user equipment, then network capacity and coverage are improved, but data transmission delay increases and QoS maintenance becomes difficult
Solution Approach 1:
The relay node performs preliminary actions by proactively reporting buffer status, memory availability, and data volume information to the donor eNodeB before actual data transmission. This allows the donor eNodeB to pre-allocate appropriate radio resources and configure transmission parameters, thereby reducing transmission delay caused by the relay node's intermediate processing and forwarding operations.
2Productivity
If relay node buffers data from multiple user equipment, then data transmission capability is improved, but radio resource wastage occurs due to ineffective buffer and memory management
Solution Approach 1:
The relay node implements continuous feedback by reporting buffer status, memory availability, and data volume information to the donor eNodeB. This feedback mechanism enables the donor eNodeB to dynamically adjust radio resource allocation based on the relay node's actual buffer conditions, ensuring that resources are allocated efficiently and wasted minimally while maintaining high data transmission capability.
Solution Approach 2:
The system dynamically adjusts radio resource allocation based on real-time buffer and memory status reported by the relay node. The donor eNodeB modifies resource allocation parameters dynamically according to the relay node's changing buffer conditions, thereby optimizing the balance between data transmission capability and radio resource utilization efficiency.
3Adaptability or versatility
If relay node stores and forwards data from multiple sources, then network flexibility is improved, but QoS maintenance becomes difficult due to ineffective buffer management
Solution Approach 1:
The relay node provides continuous feedback on buffer status, memory availability, and data volume information to the donor eNodeB. This feedback enables the donor eNodeB to make informed decisions about resource allocation and transmission scheduling, ensuring that Quality of Service requirements are maintained even as the relay node stores and forwards data from multiple sources with different QoS requirements.
Data Source
AI summary
The present invention relates to a wireless communication system and user equipment providing wireless communication services, and a method of transmitting and receiving data between a terminal and a base station in an evolved Universal Mobile Telecommunications System (UMTS) that has evolved from a Universal Mobile Telecommunications System (UMTS), a Long Term Evolution (LTE) system, or a LTE-A (LTE-Advanced) system and more particularly, to a method of effectively using radio resource(s) in relay node, and it may be an object of the present invention is to provide an improved method of maintaining a Quality of Service (QoS) and of managing a memory and buffer in a LTE-A system in order to effectively utilize the radio resource(s).