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ÇѱÛÁ¦¸ñ(Korean Title) ¹«¼±Ã¤³ÎÀ» Æ÷ÇÔÇÑ ´ÙÁß¼¼¼Ç Ç°ÁúÁ¦¾î¿¡ ÀÇÇÑ PoC ¼­ºñ½ºÀÇ QoS º¸Àå ÀýÂ÷ÀÇ Á¦¾È ¹× ¼º´ÉºÐ¼®
¿µ¹®Á¦¸ñ(English Title)
ÀúÀÚ(Author) Á¶¹ÌÁø   ±èÁ¤È£   Mee-Jin Cho   Jeong-Ho Kim  
¿ø¹®¼ö·Ïó(Citation) VOL 19 NO. 01 PP. VIIB1 ~ 0005 (2009. 04)
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(Korean Abstract)
º» ³í¹®¿¡¼­´Â ´ÙÁß ¼¼¼ÇÀ» °¡Áø PoC ¼­ºñ½º ȯ°æ ÇÏ¿¡¼­ ½Ãº¯ÀÇ ¹«¼± ä³ÎÀÇ »óȲÀ» °í·ÁÇÏ¿© °¢ ¼¼¼Ç Âü¿©ÀÚµéÀÇ ¹«¼± ä³ÎÀÇ Ç°ÁúÀ» ÀÏÁ¤ÇÑ ¼öÁØÀÌ»óÀ¸·Î º¸ÀåÇÒ ¼ö ÀÖµµ·Ï Àü¼Û¼Óµµ¸¦ Á¶Á¤ÇÏ´Â ¹æ¾ÈÀ» Á¦¾ÈÇÏ°í ÀÌÅ»(outage)È®·üÀ» ¼º´ÉÁö¼ö·Î ÇÏ¿© ´Ù°æ·Î ¹«¼±Ã¤³Îȯ°æ ÇÏ¿¡¼­ Á¦¾ÈÇÑ ¹æ¹ý°ú ±âÁ¸¹æ¹ý°£ÀÇ ¼º´É Â÷À̸¦ ºñ±³ºÐ¼®ÇÑ´Ù. ´Ù°æ·Î ȯ°æ ÇÏ¿¡¼­ ½ÅÈ£ ´ë ÀâÀ½ºñÀÇ ºÐÆ÷ÇÔ¼ö¸¦ À¯µµÇÏ°í À̷κÎÅÍ ÀÌŻȮ·üÀ» À¯µµÇÏ°í, ±âÁ¸¹æ¹ý°ú Á¦¾ÈÇÑ ¹æ¹ýÀ» ºñ±³ÇÑ °á°ú, Á¦¾ÈµÈ ¹æ¹ýÀ» »ç¿ëÇÏ¿´À» °æ¿ì ¼­ºñ½º Ç°ÁúÀ» ƯÁ¤Áþ´Â ÀÌŻȮ·üÀÌ ´ëÆø °¨¼ÒÇÏ¿´À¸¸ç ´Ù°æ·ÎÀÇ ¼ö¿¡ µû¸¥ ´ÙÀ̹ö½ÃƼ (diversity) À̵æÀÌ ¸Å¿ì Ä¿Áö¸ç ÀÌ¿¡ µû¸¥ ÀÌŻȮ·üÀÇ °³¼±ÀÌ µÎµå·¯Áö°Ô ³ªÅ¸³²À» È®ÀÎÇÏ¿´´Ù.
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(English Abstract)
In this paper, we have proposed the QoS(quality of service) control scheme which can adjust data tansfer rates of the session participants in response to their radio channel conditions under the time-varying propagation radio environment. The outage probability is selected as the performance index in order to compare the performance of the proposed scheme with the conventional QoS control scheme. the outage probability of the single and multiple paths is mathematically derived here and its numerical results are investigated. The results show that the significant performance improvement can be obtained compared with the conventional scheme and also the diversity gain can improve the radio link outage as the degrees of the multipath diversity increases. Therfore the overall performance improvement in terms of the QoS of the outage probability can e significantly be achieved by applying the proposed scheme.
Å°¿öµå(Keyword) PoC   QoS   PTT   OMA   Resource Management  
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