Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
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ÇѱÛÁ¦¸ñ(Korean Title) |
±¤´ë¿ª ¹«¼±¸Á¿¡¼ R_ALOHA ±â¹ýÀ» Àû¿ëÇÑ À½¼º/µ¥ÀÌŸ ÅëÇÕ ¼ºñ½º UC ÇÁ·ÎÅäÄÝ |
¿µ¹®Á¦¸ñ(English Title) |
A MAC Protocol for Voice/Data Integrated Services Using R_ALOHA Scheme In Wideband Wireless Networks |
ÀúÀÚ(Author) |
ÀÓÀÎÅÃ
In-Taek Lim
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¿ø¹®¼ö·Ïó(Citation) |
VOL 03 NO. 01 PP. 0155 ~ 0162 (1999. 03) |
Çѱ۳»¿ë (Korean Abstract) |
º» ³í¹®¿¡¼´Â È¥ÇÕÇü TDMA/CDMA ½Ã½ºÅÛÀ» ÀÌ¿ëÇÑ ±¤´ë¿ª ¹«¼±¸Á¿¡¼ À½¼º°ú µ¥ÀÌŸ Æ®·¡ÇÈÀ» ÅëÇÕ ¼ºñ½ºÇϱâ À§ÇÑ R_ALOHA_CDMA ÇÁ·ÎÅäÄÝÀ» Á¦¾ÈÇÏ°í, ÀÌ¿¡ ´ëÇÑ ¼º´ÉÀ» ºÐ¼®Çß´Ù. ¿ª¹æÇâ ³í¸® ä³ÎÀº ŸÀÓ ½½·Ô°ú °¢ ½½·Ôº° È®»ê ÄÚµå ä³Î¿¡ ÀÇÇؼ Á¦°øµÈ´Ù. º» ³í¹®¿¡¼ Á¦¾ÈÇÑ ÇÁ·ÎÅäÄÝÀº R_ALOHA ±â¹ýÀ» Àû¿ëÇÏ¿©, À½¼º Æ®·¡ÇÈÀº ½½·Ô°ú È®»ê ÄÚµå ä³Î ¿¹¾à ¹æ½ÄÀ» »ç¿ëÇÏ´Â ¹Ý¸é, µ¥ÀÌŸ Æ®·¡ÇÈÀº ¸Å ÆÐŶÀÌ ¹ß»ýÇÒ ¶§¸¶´Ù ÀÓÀÇÀÇ ºó ä³ÎÀ» ¼±ÅÃÇؼ Àü¼ÛÇÏ´Â S_CDMA_ALOHA ¹æ½ÄÀ» »ç¿ëÇÑ´Ù. ¼º´É ºÐ¼®ÀÇ °á°ú, Çù´ë¿ª TDMA ½Ã½ºÅÛÀÇ R_ALOHA ±â¹ý°ú´Â ´Þ¸® È®»ê Äڵ忡 ÀÇÇÏ¿© ´ÙÁß Ã¤³ÎÀÌ Á¦°øµÇ¹Ç·Î µ¿½Ã¿¡ ¼ºñ½ºÇÒ ¼ö ÀÖ´Â À½¼º ´Ü¸»±â°¡ »ó´çÈ÷ Áõ°¡ÇÔÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ Ãæµ¹ÇÑ À½¼º ÆÐŶÀÇ ºó¹øÇÑ ÀçÀü¼Û¿¡µµ ºÒ±¸ÇÏ°í ºñ±³Àû ¾ÈÁ¤ÀûÀÎ ¼º´ÉÀ» ³ªÅ¸³Â´Ù.
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¿µ¹®³»¿ë (English Abstract) |
In this paper, an R_ALOHA_CDMA protocol is proposed for voice and data integrated services in the hybrid TDMA/CDMA wireless networks. In the hybrid TDMA/CDMA systems, the backward logical channels are composed of time slots with multiple spreading codes per slot. In the proposed protocol, a voice terminal can reserve a spreading code to transmit voice packets during a talkspurt. On the other hand, whenever a data terminal generates a packet, it transmits the packet through one of the available spreading codes. Throughout the results, it is shown that the system capacity increases in proportion to the number of spreading codes.
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