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US 7,609,729 B2Granted
System and method of multiplexing TDM and packet data
AssigneeFujitsu Limited
InventorPaul Elias
Life of this patent
Estimating the term…
Abstract
Telecommunication equipment includes a TDM interface operable to receive STS-n data, and a packet interface operable to receive packet/cell data and filling a STS-MC payload with the packet/cell data. An n×n cross-connect is coupled to the TDM interface and operable to switch and assign the STS-n data to any one of n STS-1 time slots. A multiplexer is coupled to the cross-connect and the packet interface and operable to combine the switched STS-n data and the STS-MC packet/cell data into an STS-N payload for transport, where N is the sum of n and M.
Claims8
Telecommunication equipment, comprising:
- a TDM interface operable to receive STS-n data, where n is equal to a number of STS-1 time slots in the STS-n data;
- a packet interface operable to receive packet/cell data and fill a STS-MC payload with the packet/cell data, wherein M is a number of time slots in the STS-MC payload;
- an STS-1 switch comprising an n×n cross-connect coupled to the TDM interface and operable to switch and assign each of the n STS-1 time slots of the STS-n data received at the TDM interface to any one of n STS-1 time slots;
- a multiplexer coupled to the cross-connect and the packet interface and operable to combine the switched STS-n data and the STS-MC packet/cell data into an STS-N payload for transport, where N is a number of time slots in the STS-N payload and is equal to the sum of n and M;
- and
- a framer for framing the STS-n signal for transport on an optical carrier;
- wherein the STS-N payload includes the STS-MC at the beginning of the payload and the STS-n at the end of the payload;
- and
- wherein n and M are greater than zero.
6 more elements
Telecommunication equipment, comprising:
- a TDM interface operable to receive STS-n data, where n is equal to a number of STS-1 time slots in the STS-n data;
- a packet interface operable to receive packet/cell data and fill a STS-MC payload with the packet/cell data, wherein M is a number of time slots in the STS-MC payload;
- an STS-1 switch comprising an n×n cross-connect coupled to the TDM interfae and operable to switch and assign each of the n STS-1 time slots of the STS-n data received at the TDM interface to any one of n STS-1 time slots;
- a multiplexer coupled to the cross-connect and the packet interface and operable to combine the switched STS-n data and the STS-MC packet/cell data into an STS-N payload for transport, where N is a number of time slots in the STS-N payload and is equal to the sum of n and M;
- and
- a framer for framing the STS-n signal for transport on an optical carrier;
- wherein the STS-N payload includes the STS-n at the beginning of the payload and the STS-MC at the end of the payload;
- and
- wherein M and n are greater than zero.
6 more elements
A method, comprising:
- switching and assigning STS-n TDM data, using an n×n cross-connect, to a contiguous block of n STS-1 time slots, n being a number of STS-1 time slots in the STS-n TDM data, the n×n cross-connect capable of assigning each of the STS-1 time slots in the STS-n data to any of the STS-1 time slots of the contiguous block of n STS-1 time slots;
- combining the switched STS-n data and concatenated STS-MC packet/cell data from a packet interface into an STS-N payload for transport, where M is a number of time slots in the STS-MC data and N is a number of time slots in the STS-N payload, N being equal to the sum of n and M;
- and
- framing the STS-n payload for transport on an optical carrier;
- wherein combining the switched STS-n data and STS-MC packet/cell data into an STS-N payload comprises assigning the switched STS-n data to contiguous time slots at the beginning of the STS-N payload and STS-MC data to contiguous time slots at the end of the STS-N payload;
- and
- where in n and M are greater than zero.
4 more elements
A method, comprising:
- switching and assigning STS-n TDM data, using an n×n cross-connect, to a contiguous block of n STS-1 time slots, n being a number of STS-1 time slots in the STS-n TDM data, the n×n cross-connect capable of assigning each of the STS-1 time slots of the STS-n data to any of the STS-1 time slots of the contiguous block of n STS-1 time slots;
- combining the switched STS-n data and concatenated STS-MC packet/cell data from a packet interface into an STS-N payload for transport, where M is a number of time slots in the STS-MC data and N is a number of time slots in the STS-N payload, N being equal to the sum of n and M;
- and
- framing the STS-n payload for transport on an optical carrier;
- wherein combining the switched STS-n data and STS-MC packet/cell data into an STS-N payload comprises assigning the switched STS-n data to contiguous time slots at the end of the STS-N payload and the STS-MC data to coutiguous time slots at the beginning of the STS-N payload;
- and
- wherein n and M are greater than zero.
4 more elements
Dependencies are inferred from the claim text.