Wireless Paging Scheme Selection by QoS and Resource Efficiency
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Solution Overview
Problem
Wireless communications systems face challenges in efficiently locating access terminals when they are not actively communicating, balancing resource allocation, latency, and Quality of Service (QoS), as existing strategies either consume excessive resources for quick location or use fewer resources for longer search periods, impacting user perception of service quality.
Innovation Solution
A method is introduced to select between two paging schemes based on Quality of Service (QoS), type of service, recent transaction history, subscriber priority, and system loading to optimize the location process, allowing for pre-paged or direct delivery of services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a large number of base stations issue paging signals simultaneously, then the latency in locating the device is reduced, but the resource allocation efficiency deteriorates
Solution Approach 1:
The patent changes the parameter of paging signal transmission by introducing variable transmission powers for different base stations. The network controller assigns different power levels to base stations based on their likelihood of being near the mobile device, thereby reducing the number of base stations that need to transmit at full power while maintaining effective coverage, thus resolving the contradiction between fast location and resource efficiency
Solution Approach 2:
The patent applies local quality by making each base station's paging signal have different characteristics (transmission power) based on its specific location and probability of being near the mobile device. Base stations closer to the estimated device location transmit at higher power, while those farther away transmit at lower power or remain silent, optimizing both location speed and resource usage
2Loss of energy
If only a small group of base stations issue paging signals, then resource allocation efficiency is improved, but the effectiveness at locating the device deteriorates
Solution Approach 1:
The patent introduces dynamics by making the paging signal transmission a multi-phase process. Initially, a limited set of base stations transmit paging signals based on estimated device location. If no response is received, the network dynamically expands the paging area to include additional base stations in subsequent phases, ensuring both resource efficiency and location effectiveness
3Loss of energy
If the search is iteratively expanded to recruit more base stations, then resource allocation efficiency is improved, but the time required to locate the user increases, reducing Quality of Service
Solution Approach 1:
The patent applies preliminary action by having base stations pre-calculated and pre-positioned in the paging hierarchy based on network topology and historical data. When paging is needed, the system can immediately activate the pre-identified optimal set of base stations without iterative expansion delays, thus maintaining both resource efficiency and quick location response
Data Source
AI summary
A method is provided for locating an access terminal using paging. The method comprises selecting one of a first and second paging scheme based on a quality of service associated with the access terminal. That is, a resource intensive paging scheme may be employed to locate access terminals that have been assigned a relatively high quality of service, and a slower, less resource intensive, paging scheme may be used when the access terminal has a relatively low quality of service.