Satellite receiver/router, system, and method of use

• US 7,372,824 B2
• Filed: 03/31/2003
• Issued: 05/13/2008
• Est. Priority Date: 04/03/1998
• Status: Expired due to Term

• Current Assignee: Rateze Remote Mgmt. L.L.C. (Intellectual Ventures LLC)
• Original Assignee: Megawave Audio LLC (Intellectual Ventures LLC)
• Inventors: Roberts, Roswell III, Peabody, C. Brian, Fish, Laurence A., Lerner, Ian
• Primary Examiner(s): PHAM, BRENDA H
• Application Number:
  US10/404,645
• Publication Number:
  US 20040136333A1
• Time in Patent Office: 1,870 Days
• Field of Search: 370/316, 370/328, 370/349, 370/352, 370/347, 370/401, 370/402, 370/428, 370/395.64, 370/431, 370/469, 370/535, 370/389, 370/474, 370/392
• US Class Current: 370/316
• CPC Class Codes: H04B 7/18584 Arrangements for data networking, i.e. for data packet routing, for congestion control data switching networks H04L12/00
• CPC Class Codes: H04L 12/1836 with heterogeneous network architecture
• CPC Class Codes: H04L 12/185 with management of multicast group membership
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04L 12/4612 LAN interconnection over narrowband networks, e.g. N-ISDN, PSTN, X.25

Abstract

This specification discloses a satellite transmission system for transmission of TCP/IP compatible packets from a head end computer through a satellite uplink, an extraterrestrial satellite, a satellite downlink, and an integrated satellite receiver/router for outputting of the TCP/IP compatible packets through a port on the receiver/router onto a computer LAN or WAN. The system may include an Internet or telecommunications backchannel. The receiver becomes router enabled by means of a removable insertion Ethernet/Router insertion card inserted into a slot in the receiver, although the transmission system may be used to simultaneously transmit a variety of other services through the receiver by use of other service slots in the receiver. The Ethernet/Receiver supports the IGMPv2 Multicasting (querier and non querier modes), standard TCP/IP (including UDP and Telnet), and SNMP protocols.

Claims

1. A satellite receiver in a satellite based IP communication system, comprising:

an Ethernet/router card configured to be removably inserted into a slot of the satellite receiver, said card comprising;

a receiver backplane interface, wherein the backplane interface provides the card with a clock and a packetized TCP/IP data stream;

a depacketizer configured to receive as input the packetized TCP/IP data stream and to output TCP/IP packets and data;

a TCP/IP address filter configured to receive as input the TCP/IP packets and data from the depacketizer, and to;

(i) output the TCP/IP packets and data, and (ii) route selected TCP/IP packets as in-band signaling data;

an Ethernet transmitter configured to receive the TCP/IP packets and data as input from the TCP/IP address filter;

an in-band signaling address filter configured to receive as input the in-band signaling data from the TCP/IP address filter and to route selected packets as commands; and

a command processor configured to receive as input the commands routed by the in-band signaling address filter.

2. A satellite receiver as recited in claim 1, wherein the packetized TCP/IP data stream provided by the backplane interface comprises a high level data link control (HDLC) packetized data stream, and wherein said depacketizer comprises an HDLC depacketizer configured to receive the HDLC packetized data stream and to output the TCP/IP packets and data.

3. A satellite receiver as recited in claim 1, wherein the card further comprises an Ethernet connector, and wherein the Ethernet transmitter provides an Ethernet output, including TCP/IP packets, suitable for distribution to a local area network (LAN) via the an Ethernet connector.

4. A satellite receiver as recited in claim 3, wherein the Ethernet connector is configured to receive Ethernet input from the LAN, and wherein the card further comprises an Ethernet receiver configured to receive the Ethernet input from the Ethernet connector and to output TCP/IP packets and data.

5. A satellite receiver as recited in claim 4, wherein the card further comprises an Ethernet input address filter configured to receive said TCP/IP packets and data from said Ethernet receiver and to provide commands addressed to the card to the command processor.

6. A satellite receiver as recited in claim 1, wherein the card further comprises a modem communications processor, and wherein the Ethernet input address filter is further configured to provide data addressed for a head-end content server to the modem communication processor.

7. A satellite receiver as recited in claim 1, wherein the modem communication processor is further configured to perform data transmission and data reception through an RS-232 communications port.

8. A satellite receiver as recited in claim 1, wherein the command processor is further configured to output commands to, and to receive as input responses from, an RS-232 monitoring and control port on the card.

9. A satellite receiver as recited in claim 1, wherein the command processor is further configured to:

(i) exchange commands and responses with at least one auxiliary RS-232 port on the card;

(ii) provide command output, and receive input responses from, a modem communication processor on the card; and

(iii) output responses to the Ethernet transmitter when necessary to assure receipt of all TCP/IP data packets for users on the LAN.

10. A satellite receiver as recited in claim 1, wherein the in-band signaling address filter is further configured to route selected user datagram protocol (UDP) packets to said command processor.

11. A satellite receiver as recited in claim 10, wherein the card is further configured to operate in an Internet Group Management Protocol (IGMP) mode in which the card will only allow multicast UDP packets to pass to the Ethernet connector if a user has requested the multicast packet stream and the UDP packets are destined for a multicast address for the stream.

12. A satellite receiver as recited in claim 1, wherein the card is further configured to operate in a static route mode in which the card will only allow a packet to be output to an Ethernet port on the card if a destination address is contained in a static route table maintained on the card.

13. A satellite receiver as recited in claim 12, wherein a user is permitted to configure the static route table to pass individual addresses or groups of addresses using a destination address and address mask, and wherein the card is configured such that an incoming packet'"'"'s address is logically AND-ed with the route table entry'"'"'s mask, and the packet is passed to the Ethernet output port only if the result is equal to the route table entry'"'"'s destination address.

14. A satellite receiver as recited in claim 1, wherein the card is further configured to route packets received through the depacketizer based on destination IP addresses associated with said packets.

15. A satellite receiver as recited in claim 1, wherein the card is further configured to recognize destination IP addresses of the command processor and a plurality of asynchronous auxiliary interfaces, and wherein commands are routed to the command processor through packets encapsulated with one of a Telnet or SNMP (Simple Network Management Protocol) protocol.

16. A satellite receiver as recited in claim 1, wherein the card is configured to route a packet whose destination address corresponds to either a monitor and control port or an auxiliary port through the appropriate port so as to allow the port to provide a backchannel to a head end server.