Digital repeater for data signals over a tree and branch network
A digital repeater for use in a tree and branch communication network is disclosed. The digital repeater has first path for downstream data communications. The first path does not perform Viterbi decoding in order to minimize the delay for downstream communications. A second path with a Viterbi decoder is used to detect communications addressed to the digital repeater. The disclosure includes other related material including teachings on the integration of the digital repeater into a network including modifications to polling, discovery, and automatic gain control procedures.
1 . A method for providing two-way data communication for use in a system comprising:
a. at least one central modem;
b. a set of client modems; and
c. at least one digital repeater;
The method comprising:
A) the central modem sending downstream information, destined for at least one client modem, through the digital repeater;
B) the digital repeater receiving the information;
C) the digital repeater regenerating the received downstream information;
D) the digital repeater then sending the regenerated downstream information towards at least one client modems;
E) the client modem sending upstream information, destined for the central modem, through the digital repeater;
F) the digital repeater receiving the upstream information;
G) the digital repeater regenerating the received upstream information; and
H) the digital repeater sending the regenerated upstream information towards the central modem.
2 . The method of claim 1 wherein the regenerated downstream information sent by the digital repeater is received by a second digital repeater which regenerates the downstream information before sending the regenerated digital information towards at least one client modem.
3 . The method of claim 1 wherein the digital repeater regenerates the downstream data without decoding the downstream data forward error correction.
4 . The method of claim 1 wherein the step of the digital repeater regenerating the received downstream data is performed without decoding the downstream data forward error correction and comprises an additional step of routing a copy of the received downstream data to a second slow path that includes decoding a copy of the downstream data for use within the digital repeater as the digital repeater is an addressable component that can receive instructions directed to a set of at least one component including that particular digital repeater.
5 . The method of claim 1 wherein the digital repeater has a fast path that does not decode the downstream data forward error correction before passing the regenerated downstream data to the at least one client modem.
6 . The method of claim 1 wherein the digital repeater has a fast path that does not decode the downstream data forward error correction before passing the regenerated downstream data to a second digital repeater.
7 . The method of claim 1 wherein the power levels used by a client modem in sending upstream data to a digital repeater can de dynamically controlled by adding information to the upstream data in the digital repeater and having an instruction sent to that particular client modem in a subsequent communication from the central modem.
8 . The method of claim 1 wherein the digital repeater can learn the addresses of the client modems downstream from the digital repeater.
9 . The method of claim 1 wherein the digital repeater can learn the addresses of the digital repeaters downstream from the digital repeater.
10 . The method of claim 1 wherein the digital repeater uses a portion of the downstream information coming from the central modem to a particular digital repeater to decrease the strength of a subsequent transmission from that particular digital repeater to that central modem.