Variable state length initialization

• US 20040022305A1
• Filed: 07/31/2003
• Published: 02/05/2004
• Est. Priority Date: 06/07/2001
• Status: Active Grant

• Current Assignee: Intellectual Ventures II LLC (Intellectual Ventures LLC)
• Original Assignee: Aware Incorporated (Crowley Holdings Preferred LLC)
• Inventors: Tzannes, Marcos C
• Granted Patent: US 7,272,171 B2
• Time in Patent Office: Days
• US Class Current: 375/219
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/1438 Negotiation of transmission parameters prior to communication modified according to link quality H04L1/0001
• CPC Class Codes: H04L 69/24 Negotiation of communication capabilities
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04M 11/062 using different frequency bands for speech and other data

Abstract

Through the use of a variable state length initialization, both the transmitter and the receiver can have control of the length of one or more initialization states. For example, a transmitter can send information, such as a message, to the receiver at the commencement of, during initialization or prior to entering a variable length initialization state. The information can specify, for example, a minimum length of an initialization state as needed by the transmitter.

Claims

1. In multicarrier communication system including a first multicarrier transceiver and a second multicarrier transceiver, a method for variable state length initialization comprising:

transmitting from the first multicarrier transceiver to the second multicarrier transceiver information identifying a minimum number of multicarrier symbols in an initialization state;

transmitting from the first multicarrier transceiver to the second multicarrier transceiver at least the minimum number of multicarrier symbols during the initialization state; and

transmitting a predefined signal from the second multicarrier transceiver to the first multicarrier transceiver allowing the first multicarrier transceiver to exit the initialization state and enter a new initialization state, wherein the predefined signal is sent from the second multicarrier transceiver to the first multicarrier transceiver after the second multicarrier transceiver receives at least the minimum number of multicarrier symbols in the initialization state.