Repeater Beacon Signal for Inter-Cell Interference Coordination
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Solution Overview
Problem
In wireless communication systems, low-cost, low-complexity repeaters that are not fully integrated into the network can cause interference due to ad-hoc deployment without network control, leading to inefficiencies and interference within the cellular network.
Innovation Solution
Implementing a repeater beacon signal that indicates its presence, allowing base stations to perform inter-cell interference coordination (ICIC) to allocate resources and mitigate interference, without requiring the repeater to be integrated into the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If repeaters are deployed ad-hoc without network integration, then deployment flexibility and ease of installation are improved, but interference to the cellular network increases
Solution Approach 1:
The patent introduces a beacon signal as an intermediary mechanism that enables non-integrated repeaters to communicate their presence to the network. The beacon signal acts as a mediator between the ad-hoc repeater and the cellular network, allowing the repeater to operate independently while still enabling the network to identify and coordinate with it to prevent interference.
Solution Approach 2:
The beacon signal provides feedback to base stations about repeater presence and status. This feedback mechanism allows the network to detect repeaters operating without full integration and initiate inter-cell interference coordination procedures, creating a closed-loop system that maintains network efficiency while allowing flexible repeater deployment.
2Device complexity
If repeaters are not integrated into the network, then device complexity is reduced, but network coordination capability deteriorates
Solution Approach 1:
The patent implements partial integration through the beacon signal mechanism. Instead of requiring full protocol stack integration, the repeater performs the minimal necessary action of transmitting a beacon signal. This partial integration approach reduces device complexity while providing sufficient coordination capability for the network to manage interference and allocate resources appropriately.
3Productivity
If base stations transmit to repeater simultaneously on shared resources, then resource utilization efficiency is improved, but signal quality deteriorates due to interference
Solution Approach 1:
The beacon signal enables preliminary action by allowing base stations to detect repeater presence before initiating transmissions. Through inter-cell interference coordination triggered by the beacon, base stations can pre-coordinate resource allocation and identify/avoid resources that would cause interference to the repeater, ensuring both high resource utilization and signal quality.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A repeater may transmit a beacon signal that indicates a presence of the repeater, where the repeater is configured to repeat signals to one or more user equipments (UEs) within a wireless communications system. The repeater may receive a signal from at least one base station within a time-frequency resource that is shared by a plurality of neighboring base stations in response to transmitting the beacon signal. The repeater may transmit an amplified version of the received signal to the one or more UEs.