Donor Base Station Relay Node Load Balance
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Solution Overview
Problem
Current communication technologies lack an effective method for achieving mobility load balance between cells after the introduction of relay nodes, leading to inefficient resource utilization and performance issues due to uneven cell loading.
Innovation Solution
A mobility load balance processing method is implemented, where a donor base station sends indication information to a relay node to hand over user equipment from a heavily loaded cell to a neighboring cell, utilizing detection thresholds for resource loads to trigger handovers and optimize network resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If relay nodes are introduced to improve network coverage and link capacity, then system capacity and coverage are improved, but mobility load balance between cells cannot be achieved
Solution Approach 1:
The donor base station acts as an intermediary between the relay node and the network core, managing the S1 and X2 interface proxy functions. This intermediary role enables the donor base station to coordinate mobility load balance operations by controlling user equipment handovers between the relay node's cell and neighboring cells, thereby resolving the load balance issue introduced by the relay node architecture
2Area of stationary object
If user equipment is concentrated in a single cell, then cell coverage is maximized, but the cell becomes excessively loaded or congested
Solution Approach 1:
The system dynamically adjusts user equipment distribution between cells based on load conditions. The donor base station monitors cell load status and dynamically triggers handover operations, allowing user equipment to move between the relay node's cell and neighboring cells. This dynamic adjustment maintains optimal load distribution while preserving coverage area
Solution Approach 2:
The system changes the cell attachment parameter of user equipment from static to dynamic. By modifying which cell a user equipment is attached to based on real-time load conditions, the system can redistribute users from congested cells to lighter cells, maintaining coverage while preventing overload
3Productivity
If neighboring cells have very different load levels, then resource allocation efficiency decreases, but network resource utilization is not maximized
Solution Approach 1:
The donor base station implements a feedback mechanism by monitoring cell load status and using this information to trigger appropriate handover operations. When load imbalance is detected between the relay node's cell and neighboring cells, the system responds by initiating load balance procedures, thereby optimizing both resource allocation efficiency and overall network resource utilization
Data Source
AI summary
A mobility load balance processing method includes: sending, by a donor base station DBS, indication information to a relay node RN of the donor base station DBS, where the donor base station DBS uses the indication information to instruct the relay node RN to perform mobility load balance processing to hand over at least one user equipment UE in a cell of the relay node RN to a neighboring cell. A relay node, a donor base station, and a communication apparatus are also disclosed. Through UE handover, a cell to which a UE is attached can be adjusted, so that load balance between cells is achieved after an RN is introduced. In this way, network resource utilization is maximized, and system capacity and system performance are improved.