Discovery Mode Selection for Mixed Mobility Networks
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Solution Overview
Problem
Wireless communication networks face interference and congestion due to increased mobile broadband demand and the deployment of more user equipment (UEs), which degrades performance in both downlink and uplink transmissions.
Innovation Solution
A method and apparatus for determining a discovery mode based on a wireless device's mobility state, selecting appropriate resources, and transmitting discovery signals using those resources to optimize communication in mixed static and mobile device networks, thereby reducing interference and improving network efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If more user equipments (UEs) are deployed to meet growing mobile broadband demand, then network coverage and capacity are improved, but interference and congestion increase degrading performance
Solution Approach 1:
The patent segments the network into different discovery modes (first discovery mode for static devices, second discovery mode for mobile devices) with separate resource allocations. This segmentation allows static and mobile devices to operate in different resource domains, reducing mutual interference while maintaining overall network capacity.
Solution Approach 2:
The patent applies local quality by assigning different discovery resources and modes to devices based on their specific mobility characteristics. Static devices use one set of discovery resources while mobile devices use another set, optimizing each device's communication quality according to its local mobility condition.
2Adaptability or versatility
If discovery resources are shared among all devices, then resource utilization is improved, but interference between static and mobile devices increases
Solution Approach 1:
The patent segments discovery resources into separate pools for static and mobile devices. Each device type has dedicated discovery resources, preventing interference while maintaining high resource utilization within each segment. The network can independently optimize resources for each discovery mode.
Solution Approach 2:
The patent implements dynamic discovery mode selection based on device mobility state. Devices can transition between discovery modes as their mobility characteristics change, allowing the system to dynamically adapt resource allocation and maintain optimal utilization while avoiding interference.
3Device complexity
If a single discovery mode is used for all devices, then system complexity is reduced, but performance degrades due to varying mobility requirements
Solution Approach 1:
The patent segments the discovery mechanism into distinct modes for static and mobile devices. Each mode has optimized parameters and resources tailored to its target device type, improving communication efficiency for both segments while keeping each individual mode relatively simple.
Solution Approach 2:
The patent enables devices to self-determine their mobility state and autonomously select the appropriate discovery mode. This self-service approach minimizes network control overhead and system complexity while maintaining high communication efficiency through adaptive mode selection.
Data Source
AI summary
Device detection in networks with mixed mobility devices is discussed. Devices in the network first determine a discovery mode from a plurality of discovery modes, wherein the determining is based on a mobility state of the wireless device. The device identifies a set of resources associated with the determined discovery mode, wherein each of the plurality of discovery modes is provisioned with separate resources. A discovery signal is transmitted using the identified set of resources according to the discovery mode. Thus, devices with higher mobility will generally send discovery signals more often than devices that are static or semi-static.