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¿µ¹®Ç¥Áظí End-to-end quality indicators and criteria for voice service over 4G mobile networks
Çѱ۳»¿ë¿ä¾à ÀÌ Ç¥ÁØÀº LTE ³×Æ®¿öÅ©¿¡¼­ °ü¸®Çü À½¼º ¼­ºñ½º¸¦ Á¦°øÇϴµ¥ À־ Á¾´Ü °£ ¼º´É¿¡ ¿µÇâÀ» ¹ÌÄ¡´Â ÁÖ¿ä ¿ä¼Ò¿Í À̸¦ ÇöÀç ±â¼ú ¼öÁØ¿¡¼­ ÀûÀýÇÏ°Ô Æò°¡Çϱâ À§ÇÑ ±âÁØÀ» Á¦°øÇÑ´Ù. µÎ ´Ü¸»ÀÌ ¸ðµÎ LTE ¸Á¿¡ ¿¬°áµÇ°Å³ª ÇÑ ´Ü¸»Àº ´Ù¸¥ ¾×¼¼½º ¸Á(¹«¼± ¶Ç´Â À¯¼±)¿¡ ¿¬°áµÇ´Â °æ¿ì¸¦ Æ÷ÇÔÇÏ´Â ´ëÇ¥ÀûÀÎ ´Ü´ë´Ü ÅëÈ­ ½Ã³ª¸®¿À¿¡ ´ëÇؼ­ ±â¼úÇÑ´Ù. °¢ ½Ã³ª¸®¿À´Â º» Ç¥ÁØ¿¡¼­ Á¤ÀÇÇÏ´Â ÂüÁ¶ ¸ðµ¨À» ±âÁØÀ¸·Î ¼³¸íµÇ¸ç, ÂüÁ¶ ¸ðµ¨Àº ´Ü¸»±â, ¹«¼± ¾×¼¼½º, ¹éȦ ³×Æ®¿öÅ©, ÄÚ¾î ³×Æ®¿öÅ© µîÀÇ ¼¼±×¸ÕÆ®·Î ±¸¼ºµÈ´Ù. À½¼º ¼­ºñ½ºÀÇ Ç°ÁúÀ» º¸ÀåÇϱâ À§ÇÑ ÁÖ¿ä Ç°Áú ÁöÇ¥·Î¼­ µî·Ï ¼º°ø·ü, ¼­ºñ½º °¡¿ë¼º, ´ÙÀ̾ó ÈÄ Á¢¼ÓÁö¿¬, À½¼º Ç°Áú, ´Ü´ë´Ü Áö¿¬, ÅëÈ­ Áß´ÜÀ², À½¼º ´ë¿ªÆø(ÄÚµ¦)À» Á¤ÀÇÇÏ°í °¢ ÁöÇ¥º° ±âÁØÀ» Á¦½ÃÇÑ´Ù.
¿µ¹®³»¿ë¿ä¾à The standard provides guidelines concerning the key aspects impacting end-to-end performance of managed voice applications over LTE networks and how they can be properly assessed using current elements of knowledge.
Some typical end-to-end scenarios are described, involving cases with LTE access at both sides of the communication, or with a different access technology at one side (wireless or wireline access). These scenarios are based on typical reference connections defined in this standard, composed of various segments, including: terminal, wireless access, backhaul network, core network. Key quality indicators (registration success rate, service availability, post dialling delay, voice quality (MOS-LQ), mouth-to-ear delay, call drop rate, speech bandwidth (NB, WB or SWB)) are defined and criteria for each indicator to ensure quality of voice services are provided.
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