The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 2011
Filed:
Jan. 22, 2009
Eui Jik Kim, Suwon-si, KR;
Sun Gi Kim, Seoul, KR;
Hyo Hyun Choi, Seoul, KR;
Jeong Geun Kim, Yongin-si, KR;
Eui Jik Kim, Suwon-si, KR;
Sun Gi Kim, Seoul, KR;
Hyo Hyun Choi, Seoul, KR;
Jeong Geun Kim, Yongin-si, KR;
Samsung Electronics Co., Ltd., Yeongtong-Gu, Suwon-Si, Gyeonggi-Do, KR;
Abstract
A wireless sensor network and data transmission method thereof provides for improving channel access efficiency and energy saving effect by using inventive carrier sensing mechanism. The data transmission method includes assessing a channel after initializing, when a packet to be transmitted is generated, a number of carrier sensing attempts (Ns) and a backoff value (W); determining, when the channel availability is assessed to be idle, whether W reaches 0; transmitting the packet if W reaches 0; and reassessing, if W does not reach 0, the channel after a duration corresponding W/(Ns-1) slot.