Relay System Message Broadcast Control for Donor Base Station Load
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Solution Overview
Problem
In wireless communication systems, donor base stations experience heavy air interface load due to serving relays and end-user WCDs, leading to delayed or blocked communications when resource utilization reaches a threshold, making it impractical to run landline connections to small-cell base stations.
Innovation Solution
A method where a relay temporarily discontinues broadcasting system messages to prevent new WCDs from acquiring connectivity when the donor base station's air interface is heavily loaded, allowing existing connections to continue while controlling the load on the air interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the relay continuously broadcasts system messages to enable WCDs to acquire connectivity, then new WCDs can connect to the relay, but the donor base station's air interface load increases, causing delayed or blocked communications
Solution Approach 1:
The patent applies dynamics by making the system message broadcast state changeable based on load conditions. The relay dynamically switches between broadcasting and non-broadcasting states according to the donor base station's air interface utilization, transforming a static broadcast mechanism into a dynamic, adaptive system that responds to real-time network conditions.
Solution Approach 2:
The patent implements periodic action by alternating the system message broadcast between active and inactive states based on load thresholds. When the air interface utilization exceeds a threshold, the broadcast is suspended; when it falls below the threshold, broadcasting resumes. This periodic on-off action controls the connection acquisition rate while managing overall system load.
2Reliability
If the relay suspends system message broadcasting to reduce air interface load, then communication reliability is maintained, but new WCDs cannot acquire connectivity
Solution Approach 1:
The system dynamically adjusts the broadcast state based on real-time load monitoring. The relay continuously monitors the donor base station's air interface utilization and switches the broadcast state accordingly, ensuring that broadcasting is active only when load conditions permit, thus maintaining reliability while enabling connectivity when possible.
Solution Approach 2:
The patent changes the operational parameter of the system message broadcast from a fixed state to a variable state controlled by load thresholds. By monitoring air interface utilization and adjusting the broadcast state based on these parameter changes, the system balances reliability maintenance with connectivity provision.
3Area of stationary object
If the donor base station serves both relays and end-user WCDs simultaneously, then network coverage is expanded, but air interface resource utilization reaches threshold levels
Solution Approach 1:
The patent extracts the system message broadcast function from continuous operation and separates it into conditional operation based on load thresholds. By taking out the broadcast function and making it optional rather than mandatory, the system can maintain network coverage through the relay infrastructure while preventing air interface resource exhaustion by selectively disabling broadcasts when resources are constrained.
Solution Approach 2:
The system uses periodic action by alternating the broadcast function on and off based on load conditions. This periodic activation ensures that the relay can serve existing WCDs and expand coverage while periodically suspending new connection acquisitions when air interface resources are fully utilized, thus balancing coverage expansion with resource conservation.
Data Source
AI summary
A method and system for controlling broadcast of system messaging from a relay, where the relay provides service on a first air interface and is configured to periodically broadcast on the first air interface a system message useable by WCDs to facilitate acquisition of wireless connectivity with the relay, and where the relay is served by a donor base station over a second air interface on which the donor base station provides service. Per the disclosure, an entity detects that resource utilization on the second air interface on which the donor base station provides service is threshold high, and in response to at least that detecting, the relay is made to temporarily discontinue the periodic broadcast of the system message on the first air interface so as to prevent the acquisition of connectivity with the relay.