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EP0616480A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Communication system for transmission between ATM network and mobile radio system

Assignee: Roke Manor Research Ltd
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Filing: 1993-09-11
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Granted: —
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Expires: 2013-09-11
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Abstract

Abstract A communication system for transmission of data from an ATM network to a mobile radio system comprising interface apparatus coupled therebetween which is operative to remove from the header of each ATM cell entering the said system from the said network, VPI and VCI data, translator means responsive to the VPI and VCI data for appropriately coding data comprising the remainder of each cell from which the said VPI and VCI data has been removed so that it will be received by a mobile user having an address as indicated by the VPI and CPI data, and further comprising second translator means responsive to codes appertaining to user addresses for producing corresponding VPI and VCI data, and means for recombining this VPI and VCI data with data comprising the remainder of the cell from which it was removed, thereby to produce whole cells suitable for transmission from the said system to a mobile terminal.

Inventors

  • 👤 Michael John Mctiffin

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-24 10:30
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/16; H04J; H04J3/00; H04J3/24; H04J3/247; H04L; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L2012/5603; H04L2012/5604; H04W28/00; H04W28/02; H04W28/06

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 154 words
A communication system for transmission of data from an ATM network to a mobile radio system comprising interface apparatus coupled therebetween which is operative to remove from the header of each ATM cell entering the said system from the said network, VPI and VCI data, translator means responsive to the VPI and VCI data for appropriately coding data comprising the remainder of each cell from which the said VPI and VCI data has been removed so that it will be received by a mobile user having an address as indicated by the VPI and CPI data, and further comprising second translator means responsive to codes appertaining to user addresses for producing corresponding VPI and VCI data, and means for recombining this VPI and VCI data with data comprising the remainder of the cell from which it was removed, thereby to produce whole cells suitable for transmission from the said system to a mobile terminal.
Claim 2
Dependent Claim 154 words
A communication system for transmission of data from an ATM network to a mobile radio system comprising interface apparatus coupled therebetween which is operative to remove from the header of each ATM cell entering the said system from the said network, VPI and VCI data, translator means responsive to the VPI and VCI data for appropriately coding data comprising the remainder of each cell from which the said VPI and VCI data has been removed so that it will be received by a mobile user having an address as indicated by the VPI and CPI data, and further comprising second translator means responsive to codes appertaining to user addresses for producing corresponding VPI and VCI data, and means for recombining this VPI and VCI data with data comprising the remainder of the cell from which it was removed, thereby to produce whole cells suitable for transmission from the said system to a mobile terminal.
Claim 3
Dependent Claim 33 words
A system as claimed in claim 1, wherein the mobile radio system is arranged to use a Code Division Multiple Access (CDMA) technique, such that the code corresponds to an appropriate CDMA code.
Claim 4
Dependent Claim 35 words
A system as claimed in claim 1, wherein the mobile radio system is arranged to use a Time Division Multiple Access (TDMA) technique, such that the code used corresponds to an appropriate TDMA timing system.
Claim 5
Independent Claim 65 words
A system as claimed in any preceding claim, wherein other header fields are removed from the header and used to provide a basis for adaptation of the remainder of the cell before it is transmitted into the mobile radio system, a suitable reconstitution process being effected to re-introduce the fields, so that the ATM cells are sufficiently reconstituted before being re-introduced into the ATM system.
Claim 6
Dependent Claim 73 words
A system as claimed in claim 4, wherein the HEC and GFC header fields are removed from each cell together with the VPI and VCI fields thereby to produce an information field and truncated header which is transmitted across the mobile radio system using a code as indicated by the VPI/VCI data, the fields being reconstituted to produce a complete cell with the appropriate header information before being re-transmitted through the ATM system.

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