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Ç¥ÁعøÈ£ [ÆóÁö] TTAE.IE-802.15.3b ±¸Ç¥ÁعøÈ£
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ÇѱÛÇ¥Áظí MAC ºÎ°èÃþÀ» À§ÇÑ °í¼Ó WPAN¿¡¼­ÀÇ MAC/PHY ±Ô°Ý(IEEE Std 802.15.3b-2005)
¿µ¹®Ç¥Áظí Part 15.3: Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for High Rate Wireless Personal Area Networks (WPANs) Amendment 1: MAC Sublayer
Çѱ۳»¿ë¿ä¾à º» ±Ô°Ý¿¡¼­ °³Á¤µÇ´Â ÁÖ¿ä º¯°æ ¹× Ãß°¡ ¿ä¼Ò´Â ´ÙÀ½°ú °°´Ù.

-MAC °èÃþÀÇ MLME-SAP¸¦ ÀçÁ¤ÀÇÇÏ¿© ÀÏ°ü¼ºÀ» °®´Â ÀÎÅÍÆäÀ̽º Á¦°ø
-ä³Î»ç¿ë½Ã°£À» È¿À²ÀûÀ¸·Î »ç¿ëÇÏ°í, Æú¸µÀ» Çã¿ëÇÏ´Â implied-ACK µµÀÔ
-ÇϳªÀÇ µ¥ÀÌÅÍ ¿¬°áÀ» ¿©·¯ ÇÁ·ÎÅäÄÝÀÌ »ç¿ëÇÏ°Ô ÇÏ´Â µ¥ÀÌÅÍ ÇÁ·¹ÀÓ ¹× LLC/SNAP Ãß°¡
-CTA ¹üÀ§ ¾È¿¡¼­ ä³ÎÀ» ÇØÁöÇÏ°Ô ÇÏ¿© ´Ù¸¥ µð¹ÙÀ̽º¿¡¼­ µ¥ÀÌÅÍ Àü¼ÛÀ» °¡´ÉÇÏ°ÔÇÏ´Â ¹æ¹ý
-ACK ÇÁ·¹ÀÓ ³»¿¡ ¼ö½Å ÆÐŶÀÇ ½ÅÈ£ Ç°Áú Á¤º¸¸¦ Æ÷ÇÔ
-¸ÖƼij½ºÆ® ¿¬°áÀ» Á¦°øÇϱâ À§ÇØ ±×·ì ÁÖ¼Ò¿¡ µð¹ÙÀ̽º IDs¸¦ ÇÒ´ç
-°©ÀÛ½º·± PNC ¿¬°áÀÌ ÇØÁöµÇ¾úÀ» ¶§ ³×Æ®¿öÅ©ÀÇ ºü¸¥ º¹±¸
-PNCÀÇ ºñÄÁ¿¡ ÀÀ¿ëÁ¾¼Ó Á¤º¸¿ä¼Ò¸¦ ½Æµµ·Ï DEV°¡ ¿äûÇÏ´Â Åë½Å±Ô¾à
-½´ÆÛ ÇÁ·¹ÀÓ Áֱ⠵¿¾È ´Ù¼öÀÇ °æÀï ±â°£À» Çã¿ë
¿µ¹®³»¿ë¿ä¾à Some of the key changes/additions are as follows:

-A new definition of the medium access control (MAC) layer management entity (MLME) service access point (SAP) so that it now provides a consistent interface.
-A new acknowledgment (ACK) policy, implied-ACK, which allows polling and a more efficient use of channel time.
-An additional data frame, the logical link control/subnetwork access protocol (LLC/SNAP), which allows multiple protocols to share a single data connection.
-A method for relinquishing time in a channel time allocation (CTA) to allow another device (DEV) time to transmit data.
-The allowing of a DEV to return information about a signal quality of a received packet in an ACK frame.
-The ability to assign device identifiers (DEVIDs) to group addresses to allow multicast connections.
-Faster recovery of network operations when the piconet coordinator (PNC) abruptly disconnects with the conditional handover and the next PNC processes.
-A protocol by which a DEV can request that the PNC place an application-specific information element (ASIE) in the beacon.
-The allowing of multiple contention periods during a superframe.
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°ü·ÃÆÄÀÏ TTAE.IE-802.15.3b-2005.pdf

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