Dynamic Page Concatenation for Cellular Paging Reliability
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Solution Overview
Problem
In cellular wireless communication systems, the concatenation of pages for mobile stations can lead to information loss and decreased page reception probability, especially in poor RF conditions, such as near the edges of sectors where signal quality is weak.
Innovation Solution
The method dynamically adjusts the page-concatenation level based on the radio frequency conditions of the mobile station, with less or no concatenation used when the station is likely near the edge of a sector, determined by factors like elapsed time since a zone-based registration message or Radio Environment Report parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pages are concatenated to conserve bandwidth and transmit more pages per timeslot, then bandwidth efficiency is improved, but information loss occurs and page reception probability decreases
Solution Approach 1:
The patent applies dynamics by making the page concatenation level adjustable rather than fixed. The system dynamically selects different concatenation levels based on mobile station conditions: using higher concatenation levels for mobile stations in good RF conditions to maximize bandwidth efficiency, and lower or zero concatenation for mobile stations in poor RF conditions (such as those near sector edges) to improve page reception probability. This dynamic adaptation resolves the contradiction by allowing the system to optimize for either bandwidth efficiency or reliability depending on the specific operational context.
2Productivity
If concatenation is used to send more pages per timeslot, then the number of pages transmitted is improved, but information loss through concatenation increases
Solution Approach 1:
The patent applies local quality by tailoring the concatenation approach to the specific needs of each mobile station. Instead of using a uniform concatenation strategy for all mobile stations, the system evaluates individual mobile station conditions (such as RF signal strength and location near sector edges) and applies appropriate concatenation levels locally. This allows the system to transmit more pages per timeslot for mobile stations that can tolerate concatenation while avoiding information loss for those that cannot, thus resolving the contradiction between transmission volume and information integrity.
3Loss of energy
If concatenation level is increased to conserve bandwidth, then bandwidth conservation is improved, but page delivery reliability in poor RF conditions deteriorates
Solution Approach 1:
The patent applies parameter changes by modifying the concatenation level parameter based on mobile station conditions. The system changes the concatenation parameter dynamically: using higher concatenation levels (more aggressive bandwidth conservation) when mobile stations are in good RF conditions, and reducing or eliminating concatenation when mobile stations are in poor RF conditions such as near sector edges. This parameter adaptation resolves the contradiction by allowing bandwidth conservation when possible while maintaining page delivery reliability when needed.
Data Source
AI summary
Methods and systems for dynamically adjusting the page-concatenation level based on RF conditions being experienced by a mobile station are disclosed herein. An exemplary method involves (i) determining that a mobile station should be paged, wherein the mobile station is operating in a coverage area of an access network; and (ii) in response: (a) using at least one indication of RF conditions for the mobile station as a basis for selecting a page-concatenation level for a page to the mobile station; and (b) transmitting the page to the mobile station, wherein the page is transmitted in a page message having the selected page-concatenation level. In an exemplary embodiment, the indication of RF conditions may be a determination that a mobile station is located near the border of a coverage area, which is made based on an elapsed time since the mobile station's last-received registration message.