WAB Base Station IP Discovery for Faster Xn Handover Setup
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, particularly in 5G and beyond, the deployment of base stations (BSs) is hindered by environmental or cost constraints, leading to gaps in network coverage, and existing methods for obtaining IP addresses of neighbor nodes in wireless backhaul (WAB) systems are inefficient, causing delays in establishing Xn interfaces and handovers.
Innovation Solution
A method involving a WAB-mobile terminal (WAB-MT) and a WAB-gNB exchanging information to obtain IP addresses of neighbor nodes through enhanced signaling, allowing rapid establishment of Xn interfaces and handovers by including specific information in RRC messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional IP address acquisition methods are used in WAB systems, then base station deployment flexibility is improved, but IP address acquisition time increases causing delays in Xn interface establishment and handovers
Solution Approach 1:
The patent applies preliminary action by having the WAB-MT acquire and store IP address information of neighbor nodes in advance during the initial access phase. When the WAB-gNB needs to establish Xn interfaces or perform handovers, it can directly utilize the pre-acquired IP addresses from the WAB-MT, eliminating the need for time-consuming IP address discovery procedures at later stages.
Solution Approach 2:
The WAB-MT serves as an intermediary that bridges the WAB-gNB and neighbor nodes for IP address acquisition. Instead of the WAB-gNB directly discovering neighbor IP addresses through traditional methods, the WAB-MT acts as a mediator that provides this information based on its prior measurements and interactions with neighbor nodes.
2Area of stationary object
If base stations are deployed to cover all areas, then network coverage is improved, but deployment cost and complexity increase due to environmental or cost constraints
Solution Approach 1:
The patent applies self-service by enabling WAB-MTs to autonomously perform IP address acquisition and provide this information to WAB-gNBs without requiring complex network-wide discovery mechanisms. This self-service capability allows flexible deployment in challenging environments while maintaining efficient Xn interface establishment and handover procedures.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a first node in a wireless communication system includes receiving first information and fourth information from a WAB-MT, wherein the first information comprises at least one of information indicating that the WAB-MT is a WAB node or a WAB-MT, an identification of a co-located WAB-gNB of the WAB-MT, a request for an IP address of the first node, and the fourth information comprises a request for an IP address of a neighbor node of the first node, and transmitting second information and fifth information to the WAB-MT, wherein the second information comprises the IP address of the first node, and the fifth information comprises the IP address of the neighbor node of the first node, wherein the IP address is used for the co-located WAB-gNB of the WAB-MT to transmit an Xn setup request to the first node, and wherein the IP address of the neighbor node is used for the co-located WAB-gNB of the WAB-MT to transmit an Xn setup request to the neighbor node.