Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2000-12-22
2003-07-22
Urban, Edward F. (Department: 2685)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S418000, C455S419000, C370S466000, C370S467000
Reexamination Certificate
active
06597921
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to telecommunication networks and, more particularly, to a method and system for communicating protocol features supported by a mobile station and a base station message center inter-working.
BACKGROUND OF THE INVENTION
Under the most current revision of a TIA/EIA-136 telecommunication standard, there are five protocols for identifying features that may be supported, mandatorily or optionally, by a mobile station and a base station message center inter-working (hereinafter “BMI”). A first protocol version TIA/EIA-136-A PV1 (hereinafter “PV1”) including three mandatory features and twenty-five optional features is illustrated in the following TABLE 1:
TABLE 1
PV1 FEATURES
OPTIONAL/MANDATORY
Intelligent Roaming
Optional
Multilingual Display
Optional
ISO-8859 (Latin 1)
Mandatory
ISO-10646 (BMP)
Optional
ISO-8859-8 (Latin/Hebrew)
Optional
Asyno Data
Optional
G3-Fax
Optional
DADS
Optional
Non-Public Mode
Optional
DTX
Optional
Subaddressing
Optional
User Group
Optional
Half-Rate DTC
Optional
Double-Rate DTC
Optional
Triple-Rate DTC
Optional
STU-III
Optional
Total Charge Info
Optional
TSAR
Mandatory
Cellular Messaging Teleservice
Optional
GUTS
Optional
OATS
Optional
OPTS
Optional
SMS Submit
Optional
R-Data Delivery on DTC
Mandatory
PFC 2 to 8
Optional
ACELP
Optional
OMEA and VPM
Optional
A second protocol version TIA/EIA-136-A PV2 (hereinafter “PV2”) includes one mandatory feature and two optional features in addition to the three mandatory features and twenty-five optional features of PV1. The specific mandatory feature and optional features of PV2 are illustrated in the following TABLE 2:
TABLE 2
PV2 FEATURES
OPTIONAL/MANDATORY
Downlink Power Control
Mandatory
Enhanced MACA
Optional
BATS
Optional
A third protocol version TIA/EIA-136-A PV3 (hereinafter “PV3”) includes zero mandatory features and five optional features in addition to the four mandatory features and twenty-seven optional features of PV1 and PV2. The specific optional features of PV3 are illustrated in the following TABLE 3:
TABLE 3
PV3 FEATURES
OPTIONAL/MANDATORY
136+ Packet Data
Optional
8-PSk Modulation
Optional
Extended Voice Mode
Optional
USI Vocoder
Optional
Interleaving
Optional
A fourth protocol version TIA/EIA-136-B PV4 (hereinafter “PV4”) includes two mandatory features and three optional features in addition to the four mandatory features and thirty-two optional features of PV1, PV2 and PV3. The specific mandatory features and optional features of PV4 are illustrated in the following TABLE 4:
TABLE 4
PV4 FEATURES
OPTIONAL/MANDATORY
Enhanced Privacy and Encryption
Mandatory
Added Diversity For Improvement
Optional
in Channel Errors
GPRS-136
Optional
+Code Dialing
Mandatory
Charge Indication Teleservice (CIT)
Optional
A fifth protocol version TIA/EIA-136-C PV5 (hereinafter “PV5”) includes zero mandatory features and nine optional features in addition to the six mandatory features and thirty-five optional features of PV1, PV2, PV3 and PV4. The specific optional features of PV5 are illustrated in the following TABLE 5:
TABLE 5
PV5 FEATURES
OPTIONAL/MANDATORY
Removable User Identity Module
Optional
(R-UIM)
EGPRS-136
Optional
Adaptive Multi-Rate (AMR)
Optional
Fast Power Control
Optional
Teleservice Over GSM SMS
Optional
Transmit Diversity On DTC
Optional
High Penetration Paging (HPP)
Optional
System Assisted Mobile Positioning
Optional
Through Satellite
Currently, there are two mechanisms employed by telecommunication networks for communicating which mandatory features of PV1-PV5 are supported by a mobile station and a BMI. The first mechanism involves the mobile station and the BMI agreeing, during an initial registration process, on the lowest common denominator of features between PV1-PV5 that is being supported by the mobile station and the BMI. Thus, the mobile station and the BMI are able to identify the mandatory features being supported by the mobile station and the BMI. The second mechanism involves including a list of supported mandatory features within a Capability Request message and a Capability Report message.
Although the two mechanisms have utility, a limitation of the two mechanisms is the failure to communicate optional features of PV1-PV5 that are supported by the mobile station and the BMI. As such, in order to determine if a particular optional feature is supported, for example the teleservice feature of PV5, the BMI currently sends an R-DATA message corresponding to an optional feature to the mobile station and a reception of a R-DATA REJECT message from the mobile station indicates to the BMI that the mobile station is not supporting the optional feature. However, this method can be a signaling drain.
Another limitation under the current TIA/EIA-136 is a restriction of having to implement all mandatory features from a selected protocol version and each preceding protocol version. For example, a manufacturer of a mobile station having PV5 must also implement the mandatory features of PV1-PV4. However, mandatory features of PV1-PV4 may not be commercially demanded by consumers or required by the carrier of the mobile station. Thus, the restriction has an impact on the development costs and schedules of mobile stations, which in turn affects the deployment of related mobile services.
Accordingly, there is a need for an improved method and system for communicating supported mandatory and optional features under the TIA/EIA -136 standard and similar types of standards.
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Brinks Hofer Gilson & Lione
Milord Marceau
SBC Properties LP
Urban Edward F.
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