| US 7,539,206 B2 | ||
| Communication apparatus and method for supporting carrier sense multiple access/collision detection | ||
| Sam Chul Ha, Changwon-shi (Korea, Republic of); Seung Myun Baek, Changwon-shi (Korea, Republic of); Koon Seok Lee, Changwon-shi (Korea, Republic of); Jeong Hyun Lim, Kimhae-shi (Korea, Republic of); Hwan Jong Choi, Changwon-shi (Korea, Republic of); Ja In Koo, Jinju-shi (Korea, Republic of); Dae Woong Kim, Changwon-shi (Korea, Republic of); and Sung Hwan Kang, Changwon-shi (Korea, Republic of) | ||
| Assigned to LG Electronics Inc., Seoul (Korea, Republic of) | ||
| Appl. No. 10/480,110 PCT Filed Apr. 09, 2002, PCT No. PCT/KR02/00633 § 371(c)(1), (2), (4) Date Dec. 09, 2003, PCT Pub. No. WO02/101992, PCT Pub. Date Dec. 19, 2002. |
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| Claims priority of application No. 2001-32308 (KR), filed on Jun. 09, 2001. | ||
| Prior Publication US 2004/0160976 A1, Aug. 19, 2004 | ||
| Int. Cl. H04L 12/413 (2006.01) | ||
| U.S. Cl. 370—448 [370/462; 370/463; 370/489] | 10 Claims |
| 1. A method for supporting carrier sense multiple access/collision detection (CSMA/CD) on a home bus connecting a plurality
of peripheral apparatuses, the method comprising:
assigning priority to each peripheral apparatus and defining a different busy check time period for the peripheral apparatuses
in accordance with the priority;
if a peripheral apparatus has data to transmit, preparing the data for transmission by converting the data to a packet signal
to be in correspondence to the home bus;
if the home bus is in a busy state, waiting for a certain amount of time and rechecking the state of the home bus, and if
the home bus is in an idle state, continuously checking the home bus during the defined busy check time period, to determine
whether the home bus is in the idle state or whether the home bus changes to the busy state; and
if the state of the home bus changes to the busy state during the defined busy check time period, waiting for a certain amount
of time and then checking the state of the home bus again, and
if the home bus is continuously in the idle state for the defined busy check time period, transmitting the packet signal.
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