Relay Node Initial Access for Centralized Radio Resource Scheduling
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Solution Overview
Problem
In 5G communication systems, existing mechanisms do not effectively enable relay nodes to communicate with central units of anchor nodes, leading to suboptimal radio resource scheduling and impaired user experience due to limited capability in accessing multiple distributed units simultaneously.
Innovation Solution
A method and apparatus for initial access in a multi-hop relay network, where a relay node receives configuration messages to establish connections with an anchor node, allowing centralized scheduling of radio resources and enabling optimal resource utilization across multiple distributed units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If relay nodes use existing access mechanisms, then they can connect to the network, but they cannot effectively communicate with central units of anchor nodes leading to suboptimal resource scheduling
Solution Approach 1:
The patent introduces a multi-hop relay architecture where relay nodes act as intermediaries between user equipment and anchor nodes. The relay node establishes separate connections: one to the serving cell and another to the anchor node's distributed unit. This intermediary structure enables effective communication while allowing centralized scheduling from the anchor node, resolving the contradiction between communication reliability and scheduling efficiency.
Solution Approach 2:
The patent segments the network into distributed units (DU) and central units (CU), with relay nodes connecting to both. The anchor node's distributed unit handles local relay communication while the central unit performs centralized scheduling. This segmentation allows relay nodes to maintain reliable connections while enabling efficient centralized resource allocation across multiple distributed units.
2Device complexity
If relay nodes access single distributed unit, then connection is simple, but capability to access multiple distributed units simultaneously is limited
Solution Approach 1:
The patent enables relay nodes to simultaneously access multiple distributed units through different serving cells, making the relay node multi-functional. The relay node can establish connections with both a local distributed unit and an anchor node's distributed unit, allowing it to serve multiple functions: local communication and backhaul connection. This universality resolves the contradiction between simple connection establishment and multi-DU access capability.
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Embodiments of the disclosure provide a method, device and apparatus for initial access, wherein a method for initial access includes: receiving a first configuration message; and establishing a connection between a relay node and an anchor node, based on the first configuration message. The method provided in this disclosure establishes a connection between the relay node and a central unit of the anchor node through the information interaction between base stations and the information interaction between base station and relay node. The present disclosure provides a scheduling method and a first node. The method includes: receiving second scheduling related information reported by at least one second node and first scheduling related information reported by at least one UE that is connected to the at least one second node; generating scheduling information used by the at least one second node for scheduling the connected UE; and transmitting the generated scheduling information to the at least one second node and/or the connected UE. A corresponding second node, third node, and computer readable medium are also provided.