HRPD Paging via Secondary Color Code for 1X Voice
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Solution Overview
Problem
Current technologies face challenges in delivering voice service paging from the 1x network to a mobile station (MS/AT) at multiple HRPD access network boundaries, leading to a 'ping-pong effect' and reduced success ratio of paging, especially when the MS/AT is in an idle state across different access network boundaries.
Innovation Solution
The method involves the use of a Secondary Color Code scheme, where the access network (AN) where the MS/AT is registered sends an A13-paging request message to adjacent ANs to assist in paging, ensuring that the MS/AT receives voice service paging from the 1x network, and includes steps for sending paging request and response messages through both the source and target ANs to enhance interoperability between HRPD and 1x networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the MS/AT is located at multiple HRPD access network boundaries in idle state, then the coverage area is expanded, but the paging delivery reliability deteriorates due to ping-pong effect
Solution Approach 1:
The source AN acts as an intermediary that coordinates paging across multiple target ANs. When the source AN sends paging requests to multiple target ANs, these target ANs serve as intermediaries to deliver the paging message to the MS/AT regardless of which AN the terminal currently camps on, thereby resolving the ping-pong effect and improving paging reliability at network boundaries.
2Reliability
If the source AN sends paging request to multiple target ANs, then the paging success ratio is improved, but the signaling message quantity increases
Solution Approach 1:
The system performs preliminary actions by pre-configuring the source AN with information about adjacent target ANs before paging is needed. When paging is required, the source AN can immediately send requests to multiple pre-identified target ANs without needing to dynamically discover them, reducing the signaling overhead while maintaining high paging success ratio.
3Adaptability or versatility
If the MS/AT camps on different ANs frequently, then the mobility flexibility is improved, but the network operation stability deteriorates due to ping-pong effect
Solution Approach 1:
The system implements feedback mechanisms where target ANs report back to the source AN whether they successfully delivered the paging message to the MS/AT. This feedback allows the source AN to understand the actual camped location of the terminal and adjust future paging strategies, thereby maintaining network operation stability while preserving terminal mobility flexibility.
Data Source
AI summary
The present invention discloses a method for delivering paging from 1X network in HRPD (High Rate Packet Data) network, and the Secondary Color Code scheme is applied in the present invention, which enables the AN in which a MS/AT is registered to send an A13-paging request message to other adjacent ANs which are together therewith used for paging a mobile phone. For a MS/AT at multiple AN boundary, with the present invention, it enhances the possibility of receiving the paging through HRPD air interface control channel due to the service originated from 1X network, and can ensure the double network operation ability.