Wireless Backhaul Link Establishment for Small Cell Networks
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Solution Overview
Problem
In LTE/LTE-Advanced systems, the data backhaul capability for small cells is often inadequate due to limited data transmission rates, especially in intensive deployment scenarios, where many relay nodes share a single host node, leading to insufficient backhaul capacity and affected data transmission.
Innovation Solution
A data transmission link establishment apparatus and method that selects a target node with inadequate backhaul capability, determines a backhaul node with idle resources, sets protocol stack roles, and configures the nodes to establish a data transmission link, allowing an alternative access node to assist in data backhaul, thereby enhancing backhaul capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple relay nodes share a single host node for data backhaul, then the network structure is simplified and resource sharing is achieved, but the data transmission rate and backhaul capacity are limited
Solution Approach 1:
The patent introduces an intermediate access node (relay node) between the target access node and the host node to establish an alternative data transmission path. This intermediary node has idle resources that can be utilized to boost the backhaul capacity of the target node, thereby resolving the contradiction between simplified network structure and limited data transmission rate.
2Reliability
If wired backhaul connection is deployed for small cells, then connection stability and backhaul capacity are improved, but slotted construction is required which is not feasible in intensive small cell deployment areas
Solution Approach 1:
The patent replaces the wired backhaul connection (mechanical/physical infrastructure) with a wireless backhaul connection using idle resources of access nodes. This substitution eliminates the requirement for slotted construction while maintaining connection stability and backhaul capacity, making it feasible for intensive small cell deployment areas.
3Ease of manufacture
If wireless backhaul technology with relay nodes is used, then wired connection requirements are eliminated, but the data transmission rate is limited due to shared resources among multiple relay nodes
Solution Approach 1:
The patent applies local quality by utilizing the idle resources of a specific access node (relay node) with available bandwidth to provide enhanced backhaul capacity to the target node. This localized resource sharing approach allows the target node to benefit from the idle capacity of the relay node without affecting other relay nodes' service quality, thereby improving backhaul capacity while maintaining deployment flexibility.
Data Source
AI summary
This application provides a data transmission link establishment apparatus. The apparatus includes: a selection unit, configured to select a target node; a determining unit, configured to determine a backhaul node that needs to establish a data transmission link with the target node selected by the selection unit; a setting unit, configured to set protocol stack roles, in the data transmission link, of the target node and the backhaul node that is determined by the determining unit; and a configuration unit, configured to perform configuration on the target node and the backhaul node according to the protocol stack roles that are set by the setting unit, to establish the data transmission link between the target node and the backhaul node.