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Ç¥ÁعøÈ£ | TTAK.KO-06.0209 | ±¸Ç¥ÁعøÈ£ | |
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Á¦°³Á¤ÀÏ | 2009-12-22 | ÃÑÆäÀÌÁö | 80 |
ÇѱÛÇ¥Áظí | WPAN ÀÌ¿ë ±Ù°Å¸® ¹æ¼ÛÀ» À§ÇÑ PAL/MAC | ||
¿µ¹®Ç¥Áظí | PAL/MAC for Zone Casting | ||
Çѱ۳»¿ë¿ä¾à | º» ±â¼úÀº ÀÎÅͳÝÀ» ¿ÀÇÁ¶óÀÎÀ¸·Î È®ÀåÇÏ¿©, ÀÏ»ó »ýÈ° ¼Ó¿¡¼ À¥ Á¤º¸ ¹× ¼ºñ½ºÀÇ È°¿ë¼ºÀ» Áõ´ë½ÃÅ°´Â ÀÎÇÁ¶ó¸¦ ÀǹÌÇÑ´Ù. ÀÎÅͳÝÀÇ Ç³ºÎÇÑ Á¤º¸µéÀÌ ÀÏ»ó»ýÈ°·Î ¿¬°áµÇ¾î »ç¿ëÀÚ¿¡°Ô À¯¿ëÇÑ Á¤º¸¸¦ Á¦°øÇÏ´Â ÀÎÇÁ¶ó¸¦ ÁöÇâÇϸç, ¿ÀÇÁ¶óÀÎ °ø°£°ú À¥ »çÀÌÆ®ÀÇ °áÇÕ, Push-Pull °áÇÕ, ÀÏ»ó-³×Æ®¿öÅ© ȯ°æ °áÇÕÀ» ÅëÇÏ¿© »õ·Î¿î Á¤º¸ ¼ºñ½º Á¦°øÀÌ °¡´ÉÇÏ´Ù. À̸¦ À§ÇØ º» ±â¼úÀº WPAN¿¡¼ ¹æ¼Û°ú Åë½ÅÀÌ ¸ðµÎ °¡´ÉÇϸç, IP/MPEG2-TS µî ÀÌÁ¾ ÇÁ·ÎÅäÄÝ°£ Á¤ÇÕ ±Ô°ÝÀ» Æ÷ÇÔÇÏ°í Áö±×ºñ ÇÁ·ÎÅäÄÝ°ú ȣȯ¼ºÀ» È®º¸ ÇÏ¿´´Ù. º» ±â¼ú¿¡¼´Â Layer2 ÇÁ·ÎÅäÄÝ·Î ºÒƯÁ¤ ´Ù¼ö¿¡ È¿°úÀûÀ¸·Î Á¤º¸Àü´ÞÀÌ °¡´ÉÇÑ ¹æ¼Û±â¼ú(1:n)ÀÎ Sicasting ±Ô°Ý°ú ½Å·Ú¼º ÀÖ´Â Á¤º¸Àü´ÞÀÌ °¡´ÉÇÑ ¾ç¹æÇâ Åë½Å ±â¼ú(1:1)ÀÎ Áö±×ºñ MACÀ» ¸ðµÎ ÀÌ¿ëÇÏ´Â ¹æ¼ÛÅë½ÅÀ¶ÇÕ ±¸Á¶¸¦ Á¤ÀÇÇÏ°í, Layer3 ÇÁ·ÎÅäÄÝ·Î À¥, ¹æ¼Û¸Á µî ÀÌÁ¾ ÇÁ·ÎÅäÄÝ Á¤ÇÕÀ» À§ÇÑ PAL ±Ô°ÝÀ» Á¤ÀÇÇÑ´Ù. PALÀº ³×Æ®¿öÅ© °ü¸®, ÀÌÁ¾ ÇÁ·ÎÅäÄÝ°£ Á¤ÇÕ, ÇÁ·¹ÀÓ ¾ÐÃà ¹× ºÐÇÒ ±â´ÉÀ» Á¦°øÇϸç, À̸¦ À§ÇÑ ÂüÁ¶ ¸ðµ¨°ú ÇÁ¸®¹ÌƼºê, ÇÁ·¹ÀÓ Æ÷¸ËÀ» Á¤ÀÇÇÑ´Ù. SicastingÀº ºñ¿¬°á½Ä(Connectionless) µ¥ÀÌÅÍ Àü´Þ, ÆнºÆ® ¾×¼¼½º(Fast Access) ±â´É, Áö±×ºñ MAC°úÀÇ È£È¯ ±â´ÉÀ» Á¦°øÇϸç À̸¦ À§ÇÑ ÂüÁ¶ ¸ðµ¨°ú ÇÁ¸®¹ÌƼºê, ÇÁ·¹ÀÓ Æ÷¸ËÀ» Á¤ÀÇÇÑ´Ù. | ||
¿µ¹®³»¿ë¿ä¾à | Zone Casting extends Internet to the real world. It is an infrastructure that enhances usability of web information and on-line service. It is intended to extend useful information of Internet to everyday life, by providing connection between real site and web site, push service and pull service, and real life and network context. To realize this, the standard is designed to enable both broadcasting and communication in the low data rate WPAN environment, match different protocols such as IP/MPEG2_TS, and promise compatibility with ZigBee protocol In the standard layer 2 and 3 protocols are defined. Layer 2 protocol includes Sicasting which allows broadcasting to the unspecified individuals and ZigBee MAC which promises reliable information delivery. Layer 3 protocol is defined as PAL which fuses different protocols such as Web, broadcasting network. PAL provides network management, fusion of different protocols, frame compression and division, and the reference model, primitives, frame formats are defined for that purposes. Sicasting provides connectionless data transmission, fast access, compatibility with ZigBee MAC, and the reference model, primitives, frame formats are defined for that purposes. | ||
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