Method and apparatus for multiple access over randomized slots w

Details Method and apparatus for multiple access over randomized slots w Method and apparatus for multiple access over randomized slots w

1995-11-29

1999-10-12

Rao, Anand S.

Telecommunications

Interference signal transmission

348 10, 348 12, 348 13, H04N 716

Patent

active

059666366

ABSTRACT:
A method and apparatus in a communications system (100) for providing communications units (134) access to the communications system (100). The communications. system (100) includes a cable distribution network (106) with an base communications unit (102) and a number of downstream communications units (134) all connected to the cable distribution network (106). A plurality of channels are used to transmit data between the base communications unit (102) and the downstream communications units (134). A first set of channels are used primarily for access the communications system (100) and a second set of channels are used for transmitting data within the communications system (100) after access to the communications system (100) has been gained. The base communications unit (102) sends a first type of data transmission including an identification of access channels used for requesting access to the communications system (100). The base communications unit (102) assigns channels within the second set of channels response to receiving a request for access to the communications system (100) on the first set of channels. A mechanism also is provided for handling collisions in transmissions between the downstream communications units (134) to the base communications unit (102) in attempting to gain access to the communications system (100).

REFERENCES:
patent: 5343240 (1994-08-01), Yu
patent: 5517502 (1996-05-01), Bestler et al.
patent: 5574495 (1996-11-01), Caporizzo
patent: 5594726 (1997-01-01), Thompson et al.
patent: 5606725 (1997-02-01), Hart
Generic Criteria for Version 0.1 Wireless Access Communications Systems (WACS) published by Bellcore, 1993 (TR-INS-001313), specifically Sections 6.4.5. and 6.5.2.
Personal Access Communications System Air Interface Standard J-STD-014 (PACS) published by Technical Ad Hoc Group 3 of the T1/TIA Joint Technical Committee, specifically Sections 6.4.5. and 6.5.2.

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