Hot Spot Cell Initiation via Interference Minimization Rules
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Solution Overview
Problem
The initiation of hot spot cells in mobile communication systems leads to system performance degradation and poor service quality due to interference from control signaling power and down-link reference signals, causing radio link failures and reduced user equipment (UE) detection capabilities.
Innovation Solution
A method is introduced where the basic coverage cell selects suitable hot spot cells based on predetermined rules, such as physical layer identity, time-frequency resources, and transmission power, to minimize interference and ensure efficient user capacity sharing, thereby reducing radio link failures and improving UE detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If hot spot cells are initiated to increase user capacity in hot spot districts, then user capacity and service quality are improved, but system performance degrades due to interference from control signaling power and down-link reference signals
Solution Approach 1:
The patent applies preliminary action by pre-configuring the hot spot cell with specific physical layer identities and time-frequency resource allocations before initiation. The base station determines appropriate down-link reference signal resources in advance and configures the hot spot cell accordingly, so that when the cell is activated, interference is already minimized by design rather than requiring post-activation adjustments
Solution Approach 2:
The patent applies local quality by assigning different physical layer identities and time-frequency resource configurations to different hot spot cells based on their specific locations and interference environments. Each hot spot cell is configured with locally optimized parameters, such as specific down-link reference signal time-frequency resources, rather than using uniform configurations across all cells, thereby reducing localized interference while maintaining overall system capacity
2Productivity
If hot spot cells are initiated to serve concentrated users, then user capacity increases, but radio link failures increase due to interference from control signaling and reference signals
Solution Approach 1:
The patent converts the potentially harmful interference from control signaling and down-link reference signals into a beneficial configuration by carefully selecting time-frequency resources for these signals. By allocating specific resources for down-link reference signals and control signaling that avoid conflicting with uplink data transmission, the patent transforms what could be sources of interference into structured, non-interfering signal components that actually help establish reliable radio links
Solution Approach 2:
The base station performs preliminary determination of appropriate down-link reference signal time-frequency resources before initiating the hot spot cell. This advance planning ensures that when the cell is activated, the radio link configuration is already optimized to minimize failures, rather than experiencing interference and failures that would require reactive adjustments
3Ease of manufacture
If hot spot cells are initiated without selective configuration, then deployment is simplified, but UE detection capability decreases due to interference
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting physical layer identity parameters and time-frequency resource allocation parameters based on the specific hot spot cell configuration and interference environment. Rather than using fixed, universal parameters, the system modifies these parameters selectively for each hot spot cell initiation, improving UE detection capability while maintaining relatively simple deployment procedures through automated parameter determination
Data Source
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AI summary
According to embodiments of the present invention, a method of initiating a base station is provided, comprising the following steps that: a basic coverage cell sends an switch on instruction to a hot spot cell in a closed state according to a predetermined rule, the switch on instruction carrying the predetermined rule information; the basic coverage cell is provided with a user equipment (UE) for measuring, and receives a measurement report from the UE; the basic coverage cell sends an switch on instruction to the hot spot cell such that the hot spot cell provides communication service for the UE. According to the embodiments of the present invention, a network-side equipment is further provided. As illustrated in technical solutions of the present invention, by setting a rule to select the hot spot cell adapted to be initiated, it can make data receiving of the UE suffer slight interference as initiating the base station, reduce interference form the data receiving of the UE to the down-link reference signal of the hot spot cell as possible, and thereby system performance can be improved effectively.