Source: http://www.google.com/patents/US7742495?dq=artistshare
Timestamp: 2015-01-31 10:22:03
Document Index: 58006187

Matched Legal Cases: ['Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60']

Patent US7742495 - System and method for retransmitting packets over a network of communication ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA system for transmitting packets over a network of communication channels, the system comprising a set of nodes comprising at least first and second nodes and a network access coordinator operative to coordinate the access of the set of nodes to a synchronous network of channels, wherein, if at least...http://www.google.com/patents/US7742495?utm_source=gb-gplus-sharePatent US7742495 - System and method for retransmitting packets over a network of communication channelsAdvanced Patent SearchPublication numberUS7742495 B2Publication typeGrantApplication numberUS 11/942,114Publication dateJun 22, 2010Filing dateNov 19, 2007Priority dateNov 20, 2006Fee statusPaidAlso published asUS8358663, US8831028, US20080117929, US20100254402, US20130128898Publication number11942114, 942114, US 7742495 B2, US 7742495B2, US-B2-7742495, US7742495 B2, US7742495B2InventorsAvi Kliger, Yitshak OhanaOriginal AssigneeBroadcom CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (103), Non-Patent Citations (4), Referenced by (5), Classifications (13), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetSystem and method for retransmitting packets over a network of communication channelsUS 7742495 B2Abstract A system for transmitting packets over a network of communication channels, the system comprising a set of nodes comprising at least first and second nodes and a network access coordinator operative to coordinate the access of the set of nodes to a synchronous network of channels, wherein, if at least one individual packet has been transmitted from the first node to the second node which did not receive at least one packet, the second node is operative to send a retransmission request to the network access coordinator requesting retransmission of at least one individual packet.
REFERENCE TO CO-PENDING APPLICATIONS This is a nonprovisional of the following U.S. Provisional Applications, all of which are hereby incorporated by reference herein in their entireties: U.S. Provisional Application No. 60/866,532, entitled, �A METHOD FOR PACKET AGGREGATION IN A COORDINATED HOME NETWORK�, filed on Nov. 20, 2006, U.S. Provisional Application No. 60/866,527, entitled, �RETRANSMISSION IN COORDINATED HOME NETWORK� filed on Nov. 20, 2006, U.S. Provisional Application No. 60/866,519, entitled, �IQ IMBALANCE CORRECTION USING 2-TONE SIGNAL IN MULTI-CARRIER RECEIVERS�, filed on Nov. 20, 2006, U.S. Provisional Application No. 60/907,111, �SYSTEM AND METHOD FOR AGGREGATION OF PACKETS FOR TRANSMISSION THROUGH A COMMUNICATIONS NETWORK� filed on Mar. 21, 2007, U.S. Provisional Application No. 60/907,126, entitled, �MAC TO PHY INTERFACE APPARATUS AND METHODS FOR TRANSMISSION OF PACKETS THROUGH A COMMUNICATIONS NETWORK�, filed on Mar. 22, 2007, U.S. Provisional Application No. 60/907,819, entitled �SYSTEMS AND METHODS FOR RETRANSMITTING PACKETS OVER A NETWORK OF COMMUNICATION CHANNELS�, filed on Apr. 18, 2007, and U.S. Provisional Application No. 60/940,998, entitled �MOCA AGGREGATION�, filed on May 31, 2007.
1. The transmitting node sends a reservation request (�RR�) corresponding to an expected transmission of a packet. If ARQ is employed, the node so signifies in the RR. 2. The transmitting node transmits the packet and waits for an ACK. 3. The receiving node receives the packet and checks if it has been received correctly. 4. If the packet has been received correctly the receiving network sends an ACK. 5. If the packet has been received incorrectly, or not at all, the receiving node either sends a NACK or does not reply. 6. Upon receiving an ACK or a NACK, the transmitting node decides whether to retransmit the packet or not. If neither ACK nor NACK were received the transmitted node may retransmit the packet. 7. The number of retransmissions is a parameter of the connection.
A. If single RQ-T is used, a slot is allocated for transmission of the first frame by the TX node, a slot is then allocated for transmission of the single RQ-T message by the RX node, and finally, slots are allocated for the rest of the frames deemed �required� by the TX node. B. If a burst of RQ-T is used, slots are allocated for transmission of all frames deemed �required� by the TX node, and one slot is then allocated for transmission of the burst RQ-T message by the RX node. 3.1 In some embodiments, the coordinator may be operative to allocate one or more slots for an RQ-T message immediately after a packet or packets that required RQ-T or in a corresponding or subsequent MAP. 4. The coordinator indicates to the RX node which frames are to be acknowledged in each RQ-T message. 5. The TX node sends the frames according to the grant received from the coordinator. 6. The RX node sends an RQ-T message in the RQ-T slots granted by the coordinator. 7. The RQ-T message is sent, with an indication of R-ACK or RTR, for frames that requested acknowledgment in that specific RQ-T message. 8. The TX node analyzes the RQ-T message and may, if application-appropriate, add an RR element in the next RR transmission for retransmission of the frames missed by the RX node. 9. The coordinator receives the RR and may grant the slot according to the above steps. 10. The foregoing actions may be repeated several times, provided that the maximum number of retransmissions is not exceeded. FIG. 8 shows illustrative method 7 (Retransmission Request Signal (RQ-S)), which may be operative to send single R-ACK/RTR signal to the transmitter. In some embodiments, the RQ-S may include a short signal with an indication of R-ACK or RTR which may be allocated immediately following each burst requiring retransmission under the RQ-S method. Method 7 typically comprises some or all of the following steps in a suitable order such as the following:
S = { 0 , 1 , 1 , 1 , 0 , 0 , 0 , 0 , 1 , 0 , 0 , 0 , 0 , 1 , 1 , 1 , 1 , 1 , 0 , 0 , 0 , 1 , 0 , 0 , 1 , 1 , 1 , 1 , 1 , 0 } L 4 = { 1 , 0 , 0 , 1 , 0 , 1 , 1 , 1 , 0 , 1 , 1 , 1 , 1 , 0 , 1 , 0 , 0 , 1 , 1 , 0 , 1 , 0 , 1 , 0 , 1 , 1 , 0 , 1 , 1 , 0 , 0 , 0 , 0 , 1 , 1 , 1 , 1 , 1 , 0 , 0 , 1 , 0 , 0 , 0 , 1 , 1 , 0 , 0 , 1 , 1 , 1 , 0 , 0 , 0 , 1 , 0 , 1 , 0 , 0 , 0 , 0 , 0 , 0 , 1 } L 2 = { 1 , 0 , 1 , 1 , 1 , 0 , 0 , 1 , 1 , 1 , 1 , 0 , 1 , 1 , 1 , 1 , 1 , 0 , 0 , 0 , 0 , 0 , 0 , 1 , 0 , 1 , 0 , 1 , 0 , 0 , 1 , 1 , 0 , 0 , 1 , 0 , 0 , 0 , 1 , 0 , 0 , 1 , 0 , 1 , 1 , 0 , 1 , 1 , 0 , 0 , 0 , 1 , 1 , 1 , 0 , 1 , 0 , 0 , 0 , 0 , 1 , 1 , 0 , 1 } L 1 = { 0 , 0 , 0 , 0 , 0 , 0 , 1 , 0 , 1 , 0 , 1 , 0 , 0 , 1 , 1 , 0 , 0 , 1 , 0 , 0 , 0 , 1 , 0 , 0 , 1 , 0 , 1 , 1 , 0 , 1 , 1 , 0 , 0 , 0 , 1 , 1 , 1 , 0 , 1 , 0 , 0 , 0 , 0 , 1 , 1 , 0 , 1 , 0 , 1 , 1 , 1 , 0 , 0 , 1 , 1 , 1 , 1 , 0 , 1 , 1 , 1 , 1 , 1 , 0 } FIG. 9 shows illustrative method 8 (Retransmission Request Coordinator (RQ-C)), which may be operative to send burst R-ACK or RTR to the network coordinator. In some embodiments, the acknowledgement indication is typically sent to the coordinator in the Reservation Request Message. The method typically comprises some or all of the following steps in a suitable order such as the following:
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