Relay Station Backhaul Modem Interference Coordination
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Solution Overview
Problem
In mobile communication systems, especially with mobile relay station transceivers, interference between backhaul and access links becomes a significant challenge due to the dynamic nature of radio resource usage, making traditional static RF-planning approaches ineffective, and existing solutions struggle to coordinate interference effectively in scenarios where the same radio resources are shared between backhaul and access links.
Innovation Solution
The implementation of a mechanism within the backhaul modem and access base station transceiver of a relay station transceiver that monitors and communicates information about different sets of radio resources, allowing for coordinated control and reduction of interference by ensuring non-overlapping or orthogonal resource usage between the backhaul and access links, thereby managing interference dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the same radio resources are shared between backhaul and access links, then resource utilization efficiency is improved, but interference between backhaul and access links increases
Solution Approach 1:
The patent implements dynamic resource coordination where the backhaul modem and access base station transceiver continuously exchange information about radio resource usage. The system dynamically adjusts resource allocation based on real-time monitoring of interference conditions and traffic demands, rather than using static pre-configured resource partitions. This allows the same radio resources to be shared between backhaul and access links while maintaining low interference through adaptive control.
Solution Approach 2:
The patent establishes a feedback mechanism where the backhaul modem monitors the radio resources used for backhaul communication and communicates this information to the access base station transceiver. The access base station then uses this feedback information to adjust its resource allocation decisions, avoiding simultaneous transmission on the same resources. This closed-loop feedback system enables efficient resource sharing while preventing interference.
2Device complexity
If static RF-planning approaches are used for relay station deployment, then device complexity is reduced, but interference coordination capability deteriorates in dynamic scenarios
Solution Approach 1:
The patent enables the relay station to self-coordinate interference through autonomous interaction between its backhaul modem and access base station transceiver. The system automatically monitors resource usage, exchanges coordination information, and adjusts resource allocation without requiring external network controller intervention or complex pre-planning. This self-service mechanism maintains low device complexity while achieving reliable interference coordination in dynamic scenarios.
3Reliability
If dynamic resource monitoring and communication is implemented between backhaul modem and access base station transceiver, then interference coordination is improved, but device complexity increases
Solution Approach 1:
The patent merges the interference coordination function into the existing backhaul communication protocol. The coordination information is exchanged using the same communication interface and signaling mechanisms already present in the backhaul link, rather than requiring separate dedicated monitoring and control channels. This integration approach improves interference coordination while minimizing the increase in device complexity by reusing existing system components.
Data Source
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AI summary
Embodiments provide apparatuses, methods and computer programs for a backhaul modem and an access base station transceiver of a relay station transceiver. A relay station transceiver (300) comprises a backhaul modem (100) for communicating with one or more backhaul base station transceivers (500) of a mobile communication system (600), and the relay station transceiver (300) comprises an access base station transceiver (200) for generating at least one cell of the mobile communication system (600) for communicating with one or more mobile transceivers (400). An apparatus (10) for the backhaul modem (100) comprises a transceiver module (12) to communicate with the one or more backhaul base station transceivers (500) of the mobile communication system (600) using a first set of radio resources, and an interface (14) to communicate with the access base station transceiver (200). The backhaul modem apparatus (10) further comprises a control module (16) to control the transceiver module (12) and the interface (14), and to monitor the first set of radio resources used to communicate with the one or more backhaul base station transceivers (500) of the mobile communication system (600) using the transceiver module (12). The control module (16) is configured to communicate information related to a second set of radio resources with the access base station transceiver (200) using the interface (14). The second set of radio resources being different from the first set of radio resources. An apparatus (20) for an access base station transceiver (200) comprises a transceiver module (22) to communicate with the one or more mobile transceivers (400) using a second set of radio resources, and an interface (24) to communicate with the backhaul modem (100). The access base station transceiver apparatus (20) further comprises a control module (26) to control the transceiver module (26) and the interface (24), to communicate information related to the second set of radio resources with the backhaul modem (100), and to assign radio resources from the second set of radio resources to the transceiver module (22) to communicate with the one or more mobile transceivers (400).