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Customer Complaint Management using Terminal Protocol Stack Log File Data

IP.com Disclosure Number: IPCOM000103545D
Original Publication Date: 2005-Apr-16
Included in the Prior Art Database: 2005-Apr-16
Document File: 1 page(s) / 22K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

With 3G (3rd Generation) networks, the function split between the radio access network (RAN) and the core network is such that the radio network provides a radio access bearer, which is carrying the user data, without having any information about the data content. On the application layer, a permanent logical connection between the terminal's application layer and the server's application layer is established, independent of the presence of a physical layer. If the physical layer in the RAN cannot maintain the needed performance for the service, the application layer may abort the session, assuming the physical layer connection is lost. This can happen even if the physical layer and the related radio resource management function are still trying to reestablish the connection on a different channel. This is due to possible delays during the reallocation of the service to another cell, to another part of the used spectrum or to another radio access technology. Furthermore, the radio access network has no information about the reasons for the termination. Thus, with the level of information of the RAN, it cannot be decided if it was just a regular end of the session or if the session was prematurely terminated by the application layer. This is particularly disadvantageous in areas where the coverage is less than optimal, i.e. due to a lack of field strength or excessive interference, since now far too many sessions are aborted by the application layer. Therefore, it is proposed to add a log file buffer within the mobile terminal, which logs various radio parameters and performance counters. If a session is aborted by the application layer, the log file is kept in the terminal.

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Customer Complaint Management using Terminal Protocol Stack Log File Data

Idea: Michael Faerber, DE-Munich; Mehmet Ersue, DE-Munich; Josef Urban, DE-Munich

With 3G (3rd Generation) networks, the function split between the radio access network (RAN) and the core network is such that the radio network provides a radio access bearer, which is carrying the user data, without having any information about the data content. On the application layer, a permanent logical connection between the terminal's application layer and the server's application layer is established, independent of the presence of a physical layer. If the physical layer in the RAN cannot maintain the needed performance for the service, the application layer may abort the session, assuming the physical layer connection is lost. This can happen even if the physical layer and the related radio resource management function are still trying to reestablish the connection on a different channel. This is due to possible delays during the reallocation of the service to another cell, to another part of the used spectrum or to another radio access technology. Furthermore, the radio access network has no information about the reasons for the termination. Thus, with the level of information of the RAN, it cannot be decided if it was just a regular end of the session or if the session was prematurely terminated by the application layer. This is particularly disadvantageous in areas where the coverage is less than optimal, i.e. due to a lack of field strength or excessive interference, since now far too many sessions are aborted by the application layer. Therefore, it is proposed to add a log file buffer within the mobile terminal, which logs various radio parameters and performance counters. If a session is aborted by the application layer, the log file is kept in the terminal.

There are different possibilities to inform the network about the reasons of the termination of the session. One option is that the user sends a complaint message to a service center of the network operator via...