Extended range sequence numbering for selective repeat data tran

Details Extended range sequence numbering for selective repeat data tran Extended range sequence numbering for selective repeat data tran

1997-06-17

2000-01-04

Jung, Min

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

370470, H04L 1256

Patent

active

060117966

ABSTRACT:
A method and apparatus for extending the sequence numbering range for a selective repeat transmission protocol is described. In accordance with one embodiment of the invention, data frames are transmitted including an eight-bit sequence number and a one-bit retransmit flag. The one bit retransmit flag indicates whether the frame is newly transmitted or retransmitted due to a failed first transmission. The transmit and receive systems each maintain a twelve-bit sequence number referred to as a "long sequence numbers" comprised of the eight-bit sequence number transmitted with each frame and a four-bit extension. The long sequence number is transmitted within control frames and the eight-bit sequence number is transmitted within the data frames.

REFERENCES:
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patent: 4617657 (1986-10-01), Drynan et al.
patent: 5151899 (1992-09-01), Thomas et al.
patent: 5291483 (1994-03-01), Nagai et al.
patent: 5337313 (1994-08-01), Buchholz et al.
patent: 5784362 (1998-07-01), Turina
TIA/EIA/IS-99 Interim Standard Data Services Option for Wideband Spread Spectrum Digital Cellular System, Jul. 1995.

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