Communication control method, communication control apparatus, and ADSL communication apparatus

• US 7,152,101 B2
• Filed: 06/28/2002
• Issued: 12/19/2006
• Est. Priority Date: 09/14/2001
• Status: Expired due to Fees

• Current Assignee: Panasonic Communications Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Communications Company Limited (Panasonic Holdings Corporation)
• Inventors: Tomita, Keiichi, Imai, Tatsuo, Noma, Nobuhiko
• Primary Examiner(s): Vu, Viet D.
• Assistant Examiner(s): Hu, Jinsong
• Application Number:
  US10/183,475
• Publication Number:
  US 20030055988A1
• Time in Patent Office: 1,635 Days
• Field of Search: 709/221, 709/223, 709/225, 715/781
• US Class Current: 709/221
• CPC Class Codes: H04L 5/1446 of transmission speed

Abstract

A communication control method detects whether an opposing apparatus is capable of performing an abbreviated procedure during a handshake step, declares an initiation of the abbreviated procedure if the opposing apparatus is capable of performing the abbreviated procedure, omits a negotiation prior to transmitting a MEDLEY signal, allows a remote side to transmit capacity information and reception result once to a center side after exchanging the MEDLEY signal, and further allows the center side to transmit the final capacity and transmission speed information to the remote side, in order to complete the initialization sequence.

Claims

1. A communication control apparatus of a remote side, comprising:

a communication line controller that establishes a communication link with a center side;

a transmitter that transmits a first signal to the center side during a handshake procedure after the communication link is established, the first signal comprising standard information and abbreviation information, the standard information indicating a standard communication sequence which the remote side is capable of performing, the abbreviation information indicating whether the remote side is capable of performing an original abbreviated procedure;

a receiver that receives a second signal, transmitted from the center side during the handshake procedure, that indicates that the center side is capable of performing the original abbreviated procedure, the second signal being transmitted in response to the first signal; and

a communication controller that performs an initialization sequence according to the original abbreviated procedure prior to initiating a data communication, when the receiver receives the second signal indicating the center side is capable of performing the original abbreviated procedure during the handshake procedure, the initialization sequence determining a transmission speed and capacity to be used.

2. The communication control apparatus of claim 1, wherein said receiver receives a certain signal transmitted from the center side that indicates that the center side is capable of performing a standard initialization sequence, said communication controller performing said standard initialization sequence prior to initiating the data communication when said receiver receives said certain signal.

3. The communication control apparatus of claim 2, wherein said certain signal comprises a normal Acknowledge (ACK) signal.

4. The communication control apparatus of claim 1, wherein said communication control apparatus employs xDSL technology.

5. The communication control apparatus of claim 1, wherein said first signal comprises a Mode Select (MS) signal provided with a Non-Standard (NS) Information field containing data indicating that the remote side is capable of performing the original abbreviated procedure, and said second signal comprises an original Acknowledge (ACK) signal indicating that the center side is capable of performing the original abbreviated procedure.

6. A communication control apparatus of a center side, comprising:

a communication line controller that establishes a communication link with a remote side;

a receiver that receives a first signal from the remote side during a handshake procedure that comprises standard information and abbreviation information, the standard information indicating a standard communication sequence which the remote side is capable of performing, the abbreviation information indicating whether the remote side is capable of performing an original abbreviated procedure;

a returner that returns a second signal to the remote side when the receiver receives the first signal during the handshake procedure, and abbreviation information indicating whether the remote side is capable of performing the original abbreviated procedure; and

a communication controller that performs an initialization sequence according to the original abbreviated procedure prior to initiating a data communication when it is determined that the remote side is capable of performing the original abbreviated procedure, the initialization sequence determining a transmission speed and capacity to be used prior to initiating a data communication.

7. The communication control apparatus of claim 6, wherein said communication control apparatus employs xDSL technology.

8. A high speed communication apparatus, comprising:

a transmitter that transmits a Mode Select (MS) signal to a communication apparatus during a handshake procedure, the MS signal including at least one of a standard information field and a non-standard information field, the non-standard information field including abbreviation information indicating whether the high speed communication apparatus is capable of performing an original abbreviated procedure;

a receiver that receives, from the communication apparatus in response to the MS signal, one of an original Acknowledge (ACK) signal that includes abbreviation information indicating that the communication apparatus is capable of performing the original abbreviated procedure, and a normal ACK signal that indicates the communication apparatus is capable of performing a standard initialization sequence, and

a communication controller that performs one of the original abbreviated procedure and the standard initialization sequence prior to initiating a data communication in response to the receiver receiving one of the original ACK signal and the normal ACK signal.