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METHOD AND SYSTEM FOR DELIVERY REPORT HANDLING IN STORE AND FORWARD SHORT MESSAGE NETWORKS

IP.com Disclosure Number: IPCOM000004680D
Original Publication Date: 2001-Apr-03
Included in the Prior Art Database: 2001-Apr-03
Document File: 3 page(s) / 21K

Publishing Venue

Motorola

Related People

Anthony Gerkis: AUTHOR [+3]

Abstract

For networks using "store and forward" functionality of short data messages (sent on signaling channels), no mechanism is currently defined in the existing GSM, TETRA or other applicable standards to enable an originating short data entity to cease waiting for delivery reports. Depending on the means of determining datagram uniqueness, this may degrade or cause congestion in the operation of packet-based or other short data applications in the originator of the short data datagram(s). After some analysis, it has been concluded that there are two key issues facing store and forward networks that are not addressed by the standards: (1) there is no defined mechanism for returning delivery reports from a store and forward entity to an originating MS; and, (2) there is no mechanism for the originating MS to know to cease waiting for a delivery report. For wireless networks supporting store and forward functionality (such as an SMSC in a GSM network) for short data transmission, this invention describes a mechanism for delivery retries and expiring delivery reports returned to an originating entity.

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METHOD AND SYSTEM FOR DELIVERY REPORT HANDLING IN STORE AND FORWARD SHORT MESSAGE NETWORKS

by Anthony Gerkis, Galina Korkhin and David Bar-On

INTRODUCTION

For networks using "store and forward" functionality of short data messages (sent on signaling channels), no mechanism is currently defined in the existing GSM, TETRA or other applicable standards to enable an originating short data entity to cease waiting for delivery reports. Depending on the means of determining datagram uniqueness, this may degrade or cause congestion in the operation of packet-based or other short data applications in the originator of the short data datagram(s).

After some analysis, it has been concluded that there are two key issues facing store and forward networks that are not addressed by the standards: (1) there is no defined mechanism for returning delivery reports from a store and forward entity to an originating MS; and, (2) there is no mechanism for the originating MS to know to cease waiting for a delivery report.

For wireless networks supporting store and forward functionality (such as an SMSC in a GSM network) for short data transmission, this invention describes a mechanism for delivery retries and expiring delivery reports returned to an originating entity.

INVENTION

Currently, both the GSM 3.40 and the TETRA 300 392-2 standard define the behavior of "store and forward" network entities, which serves as a central clearinghouse for all short data traffic. Such entities will store and retry message delivery based on a configurable message validity period (defines only the time that the store and forward entity will attempt delivery to the target). This invention defines an algorithm for delivering reports back to the originator by expanding the concept of the validity period to include the time both to deliver a short data message to a target, and to return a delivery report to the originator from the store and forward entity. Using this mechanism, network resources are conserved since the short data transaction can be expired.

By using the invention described in this disclosure, Motorola networks can re-use the existing definable validity period parameter to enhance the robustness of delivery reporting. Also, with the advent of the Wireless Application Protocol (WAP), both the GSM and TETRA network operators are wishing to use the short data service as a bearer service for these protocols. These applications increase the number of datagrams sent by an originating entity. This poses a problem since there are only a finite number of message reference (MR) numbers available to uniquely define and identify messages over the air interface.

Hence, it is possible that if an originating entity sends messages to an absent target subscriber via the store and forward entity and requests a delivery report, the originator will be required to continue to reserve the MRs until the ...