Multiplex communications – Communication techniques for information carried in plural... – Assembly or disassembly of messages having address headers
Patent
1995-12-13
1997-05-20
Olms, Douglas W.
Multiplex communications
Communication techniques for information carried in plural...
Assembly or disassembly of messages having address headers
371 35, H04L 1256
Patent
active
056319070
ABSTRACT:
According to this invention, the system prepares user data into blocks of manageable size prior to software distribution. A block is similar in principle to memory pages in a file management system and has a predefined size, sequential ordering, and layout from which the original information can be reconstructed. The broadcast protocol is enhanced to include a block identifier to identify where the receiver performs error detection and error correction on each block. Station receiving the data maintains a list of the identity of those blocks of data that it believes have not been received properly. With each retransmission, each work station attempts to receive and recover those blocks marked on its list. Advantageously, each transmitted block is encoded using forward error correction in order to further enhance the probability of proper reception of the data. Thus, a very high-speed broadcast system of data/software updates can be sent to many switching offices simultaneously with a guarantee of high accuracy of reception.
REFERENCES:
patent: 5153578 (1992-10-01), Izawa et al.
patent: 5390184 (1995-02-01), Morris
patent: 5394397 (1995-02-01), Yanugi et al.
Guarneri Paul J.
Killian Thomas J.
Majeti Venkata C.
Schryer Norman L.
Johannesen Michael B.
Lucent Technologies - Inc.
Olms Douglas W.
Patel Ajit
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