Implementation of mutual rate adaptations in data services between GSM and DECT
First Claim
1. A method for using data services of a first telecommunication system from a terminal (26) of a second telecommunication system by means of a base station (20) and a switching centre (1), comprising steps of:
- performing in the base station rate adaptations and mappings required for the conversions of data between the format of said first telecommunication system and the format of said second telecommunication system,wherein the first telecommunication system is a GSM system and the second telecommunication system is a DECT system, and whereinthe step of performing rate adaptations and mappings includes a step of performing rate adaptations RA2 and RA1 conforming to a CCITT V.110 standard, as well as a mapping between the RA1 rate adaptation and at least two separate parallel operating protocol entities of the DECT system, for a conversion of transmission rate between a transmission rate used between the switching centre and the base station and a lower synchronous transmission rate.
6 Assignments
1 Petition
Accused Products
Abstract
The invention relates to a method and equipment with which it is possible to use data services of a cellular telecommunication system, especially the GSM system, from a terminal (26) belonging to a second cellular telecommunication system, especially the DECT system. According to the invention, it is added to the base station (20) of said second telecommunication system the means (22, 23, 24, 27, 28, 30, 32, 34) required for performing the rate adaptations and mappings with which the transferred data are converted from the format of said first telecommunication system to the format of said second telecommunications system and vice versa. All changes to the current systems as required by applying the invention are made in the base station (20) near its interface to the switching center (1), so there will be no changes as regards the user and the operation of the switching centre.
55 Citations
23 Claims
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1. A method for using data services of a first telecommunication system from a terminal (26) of a second telecommunication system by means of a base station (20) and a switching centre (1), comprising steps of:
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performing in the base station rate adaptations and mappings required for the conversions of data between the format of said first telecommunication system and the format of said second telecommunication system, wherein the first telecommunication system is a GSM system and the second telecommunication system is a DECT system, and wherein the step of performing rate adaptations and mappings includes a step of performing rate adaptations RA2 and RA1 conforming to a CCITT V.110 standard, as well as a mapping between the RA1 rate adaptation and at least two separate parallel operating protocol entities of the DECT system, for a conversion of transmission rate between a transmission rate used between the switching centre and the base station and a lower synchronous transmission rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Equipment, including a base station (20), for using data services of a first telecommunication system from a terminal (26) of a second telecommunication system, said base station comprising means for performing rate adaptations and mappings required for the conversions of data between the format of said first telecommunication system and the format of said second telecommunication system,
wherein the first telecommunication system is a GSM system and the second telecommunication system is a DECT system, and wherein said base station comprises means for performing rate adaptations and mappings includes a step of performing rate adaptations RA2 and RA1 conforming to a CCITT V.110 standard, as well as a mapping between the RA1 rate adaptation and at least two separate parallel operating protocol entities of the DECT system, for converting a transmission rate between a transmission rate used between a GSM switching centre and said base station and a lower synchronous transmission rate.
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16. A Digital European Cordless Telecommunications (DECT) fixed part for coupling to a DECT portable part, said DECT fixed part comprising an interworking unit (IWU) that comprises:
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means for performing data rate adaptations RA2 and RA1 conforming to a CCITT V.110 standard, as well as a mapping between the RA1 rate adaptation and at least two separate parallel operating protocol entities of the DECT system, for converting a transmission rate between a transmission rate used between a Global System for Mobile Communications (GSM) switching center and said DECT fixed part and a lower synchronous transmission rate; means for performing rate adaptation RA0 (24) according to the CCITT V.110 standard for converting a transmission format between a synchronous transmission mode and an asynchronous transmission mode; means for forming L2COP protocol units according to the GSM standard GSM 07.02 or L2BOP protocol units according to the GSM standard GSM 07.03; means for forming Radio Link Protocol (RLP) frames according to the GSM standard GSM 04.22 for data transferred from said DECT portable part to said GSM switching center; and means for unpacking RLP frames according to the GSM standard GSM 04.22 and the L2COP protocol units according to the GSM standard GSM 07.02 or L2BOP protocol units according to the GSM standard GSM 07.03 for data transferred from said GSM switching center to said DECT portable part. - View Dependent Claims (17)
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18. A method for using data services of a first telecommunication system from a terminal of a second telecommunication system by means of a base station and a switching center, comprising steps of:
- converting data between a format of the first telecommunication system and a format of the second telecommunication system;
the step of converting comprising a step of performing in the base station any rate adaptations and mappings required for converting the data, and including a step of performing rate adaptations RA2 and RA1 conforming to a CCITT V.110 standard for a conversion of transmission rate between a transmission rate used between the switching center and the base station and a lower synchronous transmission rate, wherein the mappings comprise a mapping between the RA1 rate adaptation and a plurality of separate parallel operating protocol entities. - View Dependent Claims (19, 20)
- converting data between a format of the first telecommunication system and a format of the second telecommunication system;
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21. A base station, comprising:
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means for using data services of a first telecommunication system from a terminal of a second telecommunication system by means of said base station in cooperation with a switching center coupled to said base station; said using means comprising means for converting data between a format of the first telecommunication system and a format of the second telecommunication system by performing rate adaptations and mappings required for converting the data, including rate adaptations RA2 and RA1 conforming to a CCITT V.110 standard for a conversion of transmission rate between a transmission rate used between the switching center and the base station and a lower synchronous transmission rate, wherein the mappings comprise a mapping between a predetermined one of the rate adaptations and a plurality of separate parallel operating protocol entities. - View Dependent Claims (22, 23)
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Specification