Intermediary Node for Macro-Micro Coordination Data Transmission
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Solution Overview
Problem
In macro-micro coordination transmission modes, the delay of transmission between macro base stations and small cells is relatively long, affecting the performance of macro-micro coordination in LTE systems.
Innovation Solution
A node is deployed in the access network to establish connections with both macro base stations and small cells, receiving connection information to determine if coordinated transmission is required, and then schedules and forwards data accordingly to improve transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If data is transmitted between macro base station and small cell through core network elements, then network architecture is simplified, but transmission delay increases
Solution Approach 1:
The invention introduces an intermediary node (macro base station or small cell) that directly receives and forwards data to the target base station, eliminating the need for data to traverse core network elements. This intermediary acts as a local relay, reducing transmission delay while maintaining simplified network architecture.
Solution Approach 2:
The invention segments the data transmission path into two parts: control plane signaling still goes through core network elements for management, while user plane data is segmented and transmitted directly between base stations via the intermediary node, thus separating the functions to optimize both architecture simplicity and transmission speed.
2Ease of operation
If macro base station and small cell are separately connected to core network, then network management is easier, but coordination performance deteriorates
Solution Approach 1:
The invention merges the control plane and user plane functions at the base station level. While base stations remain separately connected to the core network for management purposes, they are also directly connected to each other, allowing coordinated transmission decisions to be made locally without requiring core network involvement, thus improving coordination performance.
Solution Approach 2:
The invention adds another dimension to the network connectivity by establishing direct peer-to-peer connections between base stations in addition to their existing connections to the core network. This creates a multi-dimensional network topology that simultaneously supports easy management through core network connections and high-performance coordination through direct links.
Data Source
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AI summary
Embodiments of the present invention disclose a data transmission method and apparatus that are applicable to a network of macro-micro coordination among base stations, and belong to the field of communications technologies. The method includes: separately establishing, by a node, a connection to a macro base station and a small cell, where the node, the macro base station, and the small cell are located in a same access network, and the connection is an X2 connection or a user-defined logical connection; and scheduling, by the node, coordinated data, where the coordinated data is data cooperatively transmitted by the macro base station and the small cell for user equipment. In the present invention, the node is additionally deployed in the access network, and the node schedules coordinated data in a macro-micro coordination process, so as to resolve a problem, in a related technology in a macro-micro coordination transmission mode, that a delay of transmission between the macro base station and the small cell is relatively long and macro-micro coordination performance is affected. Therefore, the delay of transmission between the macro base station and the small cell is shortened, and the macro-micro coordination performance is improved.