Telecommunications – Radiotelephone system – Special service
Reexamination Certificate
1998-02-11
2001-08-14
Trost, William (Department: 2683)
Telecommunications
Radiotelephone system
Special service
C455S432300, C455S435100, C455S445000
Reexamination Certificate
active
06275692
ABSTRACT:
BACKGROUND OF THE INVENTION
FIG. 1
diagrammatically illustrates a mobile station (MS)
11
which accesses a server
13
via a cellular communications network
15
including an MSC/VLR
17
and an HLR
19
. Various conventional components of the cellular network
15
(such as the base station system) are omitted for clarity of exposition. The cellular network may be a GSM (Global System for Mobility) network. An arrangement of this type is disclosed in WIPO document WO 96/20572, and in U.S. patent application Ser. No. 363,027 filed on Dec. 23, 1994, both of which documents are hereby incorporated herein by reference.
The server
13
is located externally relative to the cellular network
15
, but is coupled to HLR for communication with the cellular network. The mobile station
11
sends a request for service to MSC/VLR
17
, as indicated at
12
in FIG.
1
. The request may be formatted according to the conventional Unstructured Supplementary Service Data (USSD) protocol. The USSD protocol is defined in the ETSI Draft prETS 300 625 (GSM 02.90 version 4.1.0), and in ETSI GSM 03.90 version 5.0.0, both of which documents are hereby incorporated herein by reference.
MSC/VLR
17
forwards the USSD request received from the mobile station
11
to HLR
19
, which in turn forwards the request to the server
13
. These communications are carried out using conventional MAP-USSD protocol, wherein MAP is the GSM acronym for Mobile Application Part. The server
13
can be any type of service node, and is typically capable of servicing a wide variety of mobile stations having a wide variety of operational characteristics. The server is capable of providing different levels of service commensurate with the different operational capabilities of the mobile stations. However, for a given request, the server has no way to determine what level of service is appropriate. Accordingly, the server
13
typically provides, in response to a USSD request for service, a generic level of service which is appropriate for the least sophisticated mobile station that can be expected to request service. The service is provided by the server in a USSD reply to the USSD request. The reply is passed from the server to HLR, from HLR to MSC/VLR, and from MSC/VLR to the mobile station.
Thus, mobile stations having higher levels of operational capability will typically receive a lower level of service that is commensurate with a mobile station having a lower level of operational capability. The higher level operational capabilities of the more sophisticated mobile stations are typically not utilized by the lower level of service that is provided by the server
13
.
It is therefore desirable to enable a server to provide to each requesting mobile station a level of service commensurate with the operational capabilities of that mobile station.
In the present invention, the mobile station provides in its request for service information from which the server can determine the operational capabilities of the mobile station. Once the operational capabilities of the mobile station have been determined by the server, the server can then provide a level of service commensurate with those operational capabilities.
REFERENCES:
patent: 5428665 (1995-06-01), Lantto
patent: 5502831 (1996-03-01), Grube et al.
patent: 5507009 (1996-04-01), Grube et al.
patent: 5572582 (1996-11-01), Riddle
patent: 5610973 (1997-03-01), Comer
patent: 5752188 (1998-05-01), Astrom et al.
patent: 5850445 (1998-12-01), Chan et al.
patent: 5896566 (1999-04-01), Averbuch et al.
patent: 5924035 (1999-07-01), Joensuu
patent: 5928325 (1999-07-01), Shaughnessy et al.
patent: 5946633 (1999-08-01), McAlinden
patent: 6055424 (2000-04-01), Tornqvist et al.
patent: 0685972 (1995-12-01), None
patent: 9620572 (1996-04-01), None
patent: 9701942 (1997-01-01), None
European Telecommunications Standard Institute; European Telecommunication Standard Draft pr ETS 300 625, Second Version, 4/97, GSM: Global System for Mobile Communications,Digital Cellular Telecommunications System(Phase 2); Unstructured Supplementary Service Data (USSD)13 Stage 1 (GSM 02.90).
European Telecommunications Standard Institute, GSM Technical Specification, Version 5.0.0, 12/96, GSM: Global System for Mobile Communications,Digital Cellular Telecommunications System; Unstructured Supplementary Service Data (USSD) —Stage 2 (GSM 03.90).
Gesesse Tilahun
Jenkens & Gilchrist P.C.
Telefonaktiebolaget L M Ericsson (publ)
Trost William
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