Browse Prior Art Database

Dynamic IOS A1 Version Update for CDMA Systems

IP.com Disclosure Number: IPCOM000010928D
Original Publication Date: 2003-Jan-31
Included in the Prior Art Database: 2003-Jan-31
Document File: 2 page(s) / 52K

Publishing Venue

Motorola

Related People

Tom Schlangen: INVENTOR [+3]

Abstract

This invention provides a mechanism to dynamically update the IOS Revision Level negotiated between a Mobile Switching Center (MSC) and Base Station (BS) without incurring a system outage, which is presently caused by the Global System Reset in CDMA systems. While the system is fully operational, this method can be used to renegotiate the IOS Revision Level (i.e., either upgrade to a higher IOS protocol revision level or back out of the current IOS version to an earlier revision level).

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Dynamic IOS A1 Version Update for CDMA Systems

Tom Schlangen, Doug White, Mohamad Dawood

Abstract

This invention provides a mechanism to dynamically update the IOS Revision Level negotiated between a Mobile Switching Center (MSC) and Base Station (BS) without incurring a system outage, which is presently caused by the Global System Reset in CDMA systems. While the system is fully operational, this method can be used to renegotiate the IOS Revision Level (i.e., either upgrade to a higher IOS protocol revision level or back out of the current IOS version to an earlier revision level).

Description

Figure 1: “BS-Initiated IOS Version Update” illustrates the mechanism with an example message flow. In this figure, the BS initiates the update of the IOS Revision Level (also known as IOS Version Number) in the IOS Version Update (new message). The MSC responds with the IOS Version Update Acknowledge (new message), which includes the negotiated IOS Revision Level.  Although not depicted here, it is also possible for the roles to be reversed (i.e., the MSC can initiate the IOS Version Update procedure).

Figure 1: BS-Initiated IOS Version Update

The currently standardized protocol for the MSC-BS interface (TIA/EIA/IS-2001-A) does not provide a mechanism to declare IOS version information between nodes outside of the Global System Reset procedure.  In other words, the only way to change the IOS Revision Level, which defines the functionality used between a BS and MSC, is to perform...