Virtual RLC Entity for Carrier Aggregation Data Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems supporting carrier aggregation, inter-base station latencies lead to data transmission resource waste due to inefficient data distribution among multiple base stations transmitting over aggregated frequency resources.
Innovation Solution
A method and apparatus for assigning data and sequence numbers in advance among base stations to optimize data transmission, utilizing a virtual RLC entity for inter-eNB frequency resource aggregation, allowing for efficient data pre-assignment and reduced latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple base stations transmit data over aggregated frequency resources, then data transmission capacity is improved, but inter-base station latencies cause data transmission resource waste
Solution Approach 1:
The patent applies preliminary action by having the network controller pre-assign data and sequence numbers to multiple base stations before actual transmission. This allows base stations to have data ready in advance, eliminating waiting time and reducing resource waste due to inter-base station latencies. The RLC entity in the network controller distributes data packets with assigned sequence numbers to appropriate base stations proactively, ensuring efficient utilization of aggregated frequency resources.
2Loss of energy
If data is distributed in advance among base stations, then resource utilization efficiency is improved, but system complexity increases due to coordination requirements
Solution Approach 1:
The patent introduces a network controller as an intermediary that centralizes the coordination function for data distribution among multiple base stations. This intermediary manages the pre-assignment of data and sequence numbers, handling the complexity of coordination centrally rather than requiring complex peer-to-peer coordination between base stations. The RLC entity in the network controller acts as the mediator that simplifies the overall system architecture while achieving efficient resource utilization.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a method for transmitting data by a base station in a wireless communication system supporting carrier aggregation, comprising the steps of: confirming whether a condition for data transmission distribution is satisfied; if the condition is satisfied, determining respective radio link control (RLC) data to be allocated to the base station and another base station, and sequence numbers for the RLC data; and transmitting the RLC data allocated to the other base station and the sequence numbers. However, the present invention is not limited to the embodiment above and other embodiments are possible.