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Â÷¼¼´ë Åë½Å¸Á(Next Generation Network)Àº À½¼º¡¤µ¥ÀÌÅÍ ÅëÇÕ¸ÁÀ¸·Î ÀϹÝÀüÈ­¸Á, ºñµ¿±â½ÄÀü¼Û¹æ½Ä(Asynchronous Transfer Mode), ÇÁ·¹ÀÓ¸±·¹ÀÌ, Àü¿ë¸Á, ¹«¼±Åë½Å¸Á µî ¸ðµç À¯¹«¼±ÀÇ Åë½Å ³×Æ®¿öÅ©¸¦ ÆÐŶ ±â¹ÝÀÇ °øÅë¸ÁÀ¸·Î ÅëÇÕÇÑ ¸ÁÀÌ´Ù. Â÷¼¼´ë Åë½Å¸ÁÀº ´Ù¾çÇÑ ¸Á Á¢¼Ó ȯ°æ¿¡¼­ °íǰÁú°ú º¸¾ÈÀÌ º¸ÀåµÈ À½¼º, µ¥ÀÌÅÍ ¹× ¹æ¼Û ¼­ºñ½º¸¦ Á¦°øÇØ ÁÖ¾î¾ß ÇÑ´Ù. ƯÈ÷, °³ÀÎ Áß½ÉÀÇ ÀÎÅÍ³Ý Åë½ÅÀÇ Áö¼ÓÀûÀÎ ¹ßÀüÀ¸·Î À̵¿ ȯ°æ¿¡¼­ ²÷±è¾ø´Â ǰÁú º¸ÀåÇü ´ë¿ë·® ¸ÖƼ¹Ìµð¾î ¼­ºñ½º¸¦ Áö¿øÇÒ ¼ö ÀÖ¾î¾ß ÇÑ´Ù. º» °í¿¡¼­´Â À̸¦ À§ÇÑ À̵¿¼º °ü¸® Ç¥ÁØÈ­ µ¿ÇâÀ» ITU-T(International Telecommunication Union-Telecommunication Standardization Sector)¸¦ Áß½ÉÀ¸·Î »ìÆìº»´Ù.

 

ITU-TÀÇ À̵¿¼º °ü¸®¸¦ À§ÇÑ Ç¥ÁØÈ­ µ¿Çâ

ITU-TÀÇ Â÷¼¼´ë Åë½Å¸Á °ü·Ã Ç¥ÁØÈ­ Á¦Á¤Àº Study Group 13(SG13)¿¡¼­, À̵¿ Åë½Å¸Á Ç¥ÁØÈ­ °ü·ÃÀº SG19¿¡¼­ ÁøÇàÇϰí ÀÖ´Ù. SG13 »êÇÏ Question 6(Q.6)´Â Â÷¼¼´ë Åë½Å¸Á¿¡¼­ À̵¿¼º ¹× À¯¹«¼± ÅëÇÕÀ» ´Ù·ç°í ÀÖÀ¸¸ç, SG19ÀÇ Q.2´Â À̵¿¼º °ü¸®¸¦ ´Ù·ç°í ÀÖ´Ù.

Â÷¼¼´ë Åë½Å¸Á¿¡¼­ À̵¿¼º °ü¸®¸¦ À§ÇÑ Ç¥ÁØÈ­´Â Â÷¼¼´ë Åë½Å¸Á ºÐ¾ß¿Í À̵¿ Åë½Å¸Á ºÐ¾ß ¸ðµÎ °í·ÁÇØ¾ß ÇÒ Çʿ䰡 ÀÖ´Ù. ÀÌ¿¡ ITU-T¿¡¼­´Â Study Group Â÷¿ø¿¡¼­ Â÷¼¼´ë Åë½Å¸Á Ç¥ÁØÈ­¿¡ ´ëÇÑ ¹ÚÂ÷¸¦ °¡Çϱâ À§ÇØ NGN-GSI(Global Standards Initiative)°¡ ¹ßÁ·µÇ¾úÀ¸¸ç, ƯÈ÷ Â÷¼¼´ë Åë½Å¸Á¿¡¼­ À̵¿¼º °ü¸® ºÐ¾ß¸¦ À§ÇØ Mobility Management(MM) ±×·ìÀ» »ý¼ºÇÏ¿´´Ù. MMÀº Q.6/SG13¿Í Q.2/SG19°£ÀÇ Joint MeetingÀ¸·Î ¿­¸®¸ç, 2006³â 7¿ù Â÷¼¼´ë Åë½Å¸Á¿¡¼­ À̵¿¼º °ü¸®¸¦ À§ÇÑ ÇÊ¿ä »çÇ×À» Á¤¸®ÇÑ Q.MMR(Mobility Management Requirements for NGN) µå·¡ÇÁÆ® ¹®¼­¸¦ Y.1706 À̶ó´Â Ç¥ÁØ ¹®¼­·Î À̲ø¾î ³»´Â ¼º°ú¸¦ °ÅµÎ¾ú´Ù.

MM¿¡¼­ ÇöÀç ´Ù·ç¾îÁö´Â À̵¿¼º °ü¸®¸¦ À§ÇÑ Ç¥ÁØÈ­´Â Q.MMF(Generic Framework of Mobility Management for NGN), Q.LMF(Framework of Location Management for NGN) ±×¸®°í Q.HCF(Framework of Handover Control for NGN) µîÀÇ µå·¡ÇÁÆ® ¹®¼­°¡ ´ëÇ¥ÀûÀÌ´Ù.

Q.MMF´Â Àü¹ÝÀûÀÎ Â÷¼¼´ë Åë½Å¸Á¿¡¼­ À̵¿¼º °ü¸®¸¦ Á¤ÀÇÇÑ ¹®¼­·Î À̵¿¼º °ü¸®ÀÇ Á߿伺À» À§Ä¡ °ü¸®¿Í ÇÚµå¿À¹ö Á¦¾î¿¡ µÎ°í ÀÖ´Ù. º¸´Ù ¼¼ºÎÀûÀÎ À§Ä¡°ü¸® °ü·Ã ±â¼úÀº Q.LMF¿¡¼­ ´Ù·ïÁö°í ÀÖÀ¸¸ç, ÇÚµå¿À¹ö Á¦¾î´Â Q.HCF¿¡¼­ ´Ù·ïÁö°í ÀÖ´Ù. Q.MMF¿¡¼­´Â È¿À²ÀûÀÎ À§Ä¡°ü¸®¿Í ÇÚµå¿À¹ö Á¦¾î¸¦ À§ÇØ Mobility Management Control Function(MMCF)À» Á¤ÀÇÇϰí ÀÖ´Ù. MMCF´Â Central MMCF(C-MMCF)¿Í Access MMCF(A-MMCF)·Î ±¸¼ºµÇ¾î ÀÖÀ¸¸ç °¢ MMCF´Â LMF¿Í HCF¸¦ Æ÷ÇÔÇϰí ÀÖ´Ù. ÄÚ¾î¸Á ·¹º§¿¡¼­ À̵¿¼ºÀ» °ü¸®ÇÏ´Â C-MMCF´Â À̱âÁ¾ ¸Á°£ ´Ü¸»ÀÇ ÇÚµå¿À¹ö¸¦ Á¦¾îÇϸç, Â÷¼¼´ë Åë½Å¸Á ³»¿¡ Á¸ÀçÇÏ´Â AAA(Authentication, Authorization, Accounting)°ü·Ã ¿£Æ¼Æ¼ ¶Ç´Â QoS °ü·Ã ¿£Æ¼Æ¼¿Í ¿¬µ¿À» ÅëÇØ °Å½ÃÀûÀ¸·Î À̵¿¼ºÀ» °ü¸®ÇÑ´Ù. A-MMCF ¾×¼¼½º¸Á ·¹º§¿¡¼­ÀÇ À̵¿¼ºÀ» °ü¸®Çϸç, µ¿ÀÏ ¾×¼¼½º¸Á ³»¿¡¼­ ´Ü¸»ÀÇ À̵¿¼ºÀ» Áö¿øÇϸç, ¼­·Î ´Ù¸¥ ¾×¼¼½º¸Á ³»¿¡¼­ ´Ü¸»ÀÇ À̵¿À» C-MMCF¿Í ÇÔ²² ¿¬µ¿µÇ¾î Áö¿øÇÑ´Ù.

Q.MMF´Â 2008³â 1¿ù NGN-GSIȸÀÇ¿¡¼­ Consent¸¦ ¸ñÇ¥·Î Çϰí ÀÖ´Ù. ÇÏÁö¸¸ MMCF¿Í Â÷¼¼´ë Åë½Å¸ÁÀÇ ¿ä±¸»çÇ×°ú ±â´ÉÀûÀÎ ±¸Á¶¸¦ Á¤ÀÇÇÑ Y.2012 ¹®¼­ÀÎ NGN-FRA(Functional Requirements and Architecture)¿ÍÀÇ ¸ÅÇο¡ ´ëÇÑ ¹®Á¦°¡ ³²¾Æ ÀÖ´Ù. À̸¦ À§ÇØ MM¿¡¼­´Â Â÷¼¼´ë Åë½Å¸ÁÀÇ ±â´ÉÀûÀÎ ±¸Á¶ °ü·Ã Ç¥ÁØÈ­ QuestionÀÎ Q.3/SG13°ú ¡®Harmonize MM framework and NGN-FRA¡¯ Joint MeetingÀ» °èȹÇϰí ÀÖ´Ù. Q.LMF¿Í Q.HCF´Â Áö¼ÓÀûÀ¸·Î º¸¿ÏµÇ°í ÀÖÀ¸¸ç Q.MMFÀÇ Ç¥ÁØ Á¦Á¤ ÀÌÈÄ ¹ÚÂ÷¸¦ °¡ÇÒ °ÍÀ¸·Î º¸ÀδÙ.

 

<±×¸² 1> MMCF°ú NGN-FRA FunctionsÀÇ °ü°è

 

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Â÷¼¼´ë Åë½Å¸Á ½ÃÀå¿¡¼­ °³ÀÎ Áß½ÉÀÇ ÀÎÅÍ³Ý ¹ßÀüÀº À̵¿ ÁßÀÎ »ç¿ëÀÚ¿¡°Ô º¸´Ù ºü¸£°í ǰÁú º¸ÀåÇü ¸ÖƼ¹Ìµð¾î ¼­ºñ½º¸¦ ´ë·®À¸·Î Á¦°øÇØ ÁÙ ¼ö ÀÖ´ÂÁö¿¡ ´Þ·Á ÀÖ´Ù. ÇöÀç ITU-T¿¡¼­ À̵¿¼º °ü¸®¸¦ À§ÇÑ Ç¥ÁØÈ­ ÀÛ¾÷Àº Q.MMF, Q.LMF, Q.HCF µîÀÇ µå·¡ÇÁÆ® ¹®¼­°¡ ÁøÇàµÇ°í ÀÖ´Ù. 2008³â 1¿ù ȸÀÇ¿¡¼­ Q.MMF°¡ Consent µÉ ¼ö ÀÖµµ·Ï NGN-FRA¿ÍÀÇ ¸ÅÇÎ °ü°è¸¦ ¸íÈ®È÷ ÇÏ´Â ±â°í°¡ ÇÊ¿äÇϸç, À§Ä¡ °ü¸®¿Í ÇÚµå¿À¹ö Á¦¾îÀÇ Q.LMF, Q.HCF µå·¡ÇÁÆ® ¹®¼­ÀÇ º¸¿ÏÀ» À§ÇÑ ±â°í°¡ Ãß°¡·Î ¿ä±¸µÈ´Ù.

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