CPE Network Service Provider Discovery via Change Information
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Solution Overview
Problem
In wireless communication networks, particularly in WiMax networks, the existing methods for discovering Network Service Providers (NSPs) lead to significant delays and resource wastage due to the need for periodic broadcasting of NSP information, which occupies valuable air interface resources and increases time consumption.
Innovation Solution
A method where a CPE regularly receives change information about NSPs from the network-side, comparing it with stored information to determine if an update is needed, and only requesting updates when necessary, thereby reducing resource occupancy and time consumption by transmitting NSP information at fixed periods or on demand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If periodic broadcasting of NSP information is implemented, then NSP discovery is achieved, but air interface resources are wasted and time consumption increases
Solution Approach 1:
The patent implements periodic broadcasting of NSP information by the base station, where change information is transmitted at fixed time intervals. This allows CPEs to efficiently discover NSPs without continuous resource occupancy, as CPEs can enter sleep modes between broadcasts and only wake to receive updates, thereby reducing overall air interface resource consumption while maintaining information availability.
Solution Approach 2:
The patent introduces a feedback mechanism where CPEs send requests to the base station when they need updated NSP information. The base station responds by broadcasting change information only when necessary, creating a demand-driven information delivery system that minimizes unnecessary transmissions and optimizes air interface resource utilization.
2Loss of information
If periodic broadcasting of NSP information is implemented, then NSP discovery is achieved, but time consumption increases
Solution Approach 1:
By broadcasting change information at periodic intervals rather than continuously, the system allows CPEs to synchronize their information reception with these periodic broadcasts. CPEs can efficiently wake up at predetermined times to receive updates and then return to low-power states, significantly reducing the time spent on NSP discovery operations while ensuring information freshness.
Solution Approach 2:
The base station prepares and broadcasts change information in advance at periodic intervals, allowing CPEs to proactively receive updates before they actually need them. This preliminary action enables CPEs to have NSP information ready when required, reducing waiting time and accelerating the NSP discovery process.
3Loss of information
If NSP information is transmitted frequently, then information freshness is improved, but resource occupancy increases
Solution Approach 1:
The feedback mechanism allows the system to transmit NSP change information only when there are actual changes to communicate. CPEs request updates when needed, and the base station responds with change information only when NSP data has been modified, eliminating redundant transmissions and optimizing the balance between information freshness and resource consumption.
Solution Approach 2:
The periodic broadcasting schedule ensures that information is updated at regular intervals, maintaining a reasonable level of freshness without requiring continuous transmission. This periodic approach, combined with change detection, ensures that information is refreshed only when necessary, optimizing both freshness and resource efficiency.
Data Source
AI summary
The present invention discloses a method and a corresponding apparatus for discovering NSPs. The method includes: transmitting, by network-side, information about NSPs supported by the current NAP; transmitting, by the network-side, first change information about NSPs supported by the NAP at a fixed period; obtaining, by a CPE, the first change information about the NSPs supported by the NAP accessible at a current position when accessing a network; determining whether the first change information is consistent with stored change information about NSPs supported by the NAP, if it is, obtaining stored information about NSPs supported by the NAP, otherwise, obtaining information about NSPs supported by the NAP transmitted by the network-side; and adding the obtained information about the NSPs as information about available NSPs discovered. The present invention can reduce extra occupancy of air interface resources and effectively reduce time consumption in the process of network discovering and selecting.