Reliable ATM microwave link and network
First Claim
1. A digital radio link including:
- an input circuit for ATM or equivalent cells from a digital access unit;
a cell processing circuit, connected to said input circuit, that encapsulates said input cells with at least error check bits so that a detected error can identify a specific cell or group of cells;
a digital transmission circuit connected to said processing circuit for transmitting said encapsulated cells via a wireless link;
a reception circuit for receiving encapsulated cells;
a cell decapsulation and error detection circuit connected to said reception circuit; and
a cell output circuit for connecting said decapsulation circuit to a digital access unit.
11 Assignments
0 Petitions
Accused Products
Abstract
A digital radio link suitable for transmitting digital voice or data signals includes an input circuit for ATM or equivalent cells, a processing circuit to encapsulate the input cells received by the input circuit with at least error check bits so that detected error can identify a specific cell or group of cells, a digital transmission circuit for transmitting the encapsulated cells via a wireless link, a reception circuit for receiving encapsulated cells from an opposite side of the digital radio link, a cell decapsulation and error detection circuit connected to said reception circuit and a cell output circuit for connecting said decapsulation circuit to a digital access unit. The system includes structure for allocating more than one type of service, such as low delay service for voice transmission and extensive forward error correction service for data transmission.
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Citations
34 Claims
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1. A digital radio link including:
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an input circuit for ATM or equivalent cells from a digital access unit; a cell processing circuit, connected to said input circuit, that encapsulates said input cells with at least error check bits so that a detected error can identify a specific cell or group of cells; a digital transmission circuit connected to said processing circuit for transmitting said encapsulated cells via a wireless link; a reception circuit for receiving encapsulated cells; a cell decapsulation and error detection circuit connected to said reception circuit; and a cell output circuit for connecting said decapsulation circuit to a digital access unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A cell transmission/reception process including:
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inputting cells; encapsulating said cells by forward error correction bits; transmitting these cells; receiving cells from an opposite side of a link; decapsulating these cells; dropping or marking "invalid" cells with errors; and outputting the non-dropped cells.
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25. A digital radio terminal in a wireless link including:
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an input circuit for inputting ATM cells or equivalent cells from a digital access unit; a transmit processing circuit connected to said input circuit that encapsulates said input cells into data blocks containing also at least error check bits so that errors on the link could be detected; a digital transmission circuit connected directly or via cables to a wireless transceiver; a reception circuit connected to said cables for receiving encapsulated cells from a digital radio terminal at the opposite side of the radio link; a cell decapsulation and error detection circuit connected to said reception circuit; a cell processing circuit connected to said cell reception circuit including means for recognizing cell boundaries and rejecting or marking for rejection whole cells upon received indication of errors; and a cell output circuit for connecting said cell processing circuit to a digital access unit. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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33. A cell transmission/reception process including:
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inputting cells; encapsulating said cells by forward error correction bits; transmitting these encapsulated cells on a link; receiving cells from an opposite side of a link; decapsulating these cells; delineating cell boundaries; dropping or marking "invalid" cells with errors; and outputting the non-dropped cells.
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34. A digital radio system including:
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a plurality of input circuits for ATM or equivalent cells from a digital access unit; a plurality of cell processing circuits, each cell processing circuit being connected uniquely to a corresponding input circuit, each cell processing circuit being capable of encapsulating input cells with at least error check bits so that a detected error can be pinpointed to a specific cell or group of cells; a plurality of digital transmission circuits, each digital transmission circuit being connected to a corresponding one of said processing circuits for transmitting encapsulated cells via a wireless link; a plurality of reception circuits for receiving encapsulated cells from an opposite side of a digital radio link; a plurality of cell decapsulation and error detection circuits, each cell decapsulation and error detection circuit being connected uniquely to a corresponding one of said plurality of reception circuits; and a plurality of cell output circuits, each cell output circuit connecting a corresponding one of said decapsulation and error detection circuits to a corresponding digital access unit.
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Specification