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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Current Result Document : 1 / 2   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) öµµÅëÇÕ¹«¼±¸Á(LTE-R) ȯ°æ¿¡¼­ÀÇ eMBMS ±¸Çö¹æ¾È
¿µ¹®Á¦¸ñ(English Title) Implementation plan of eMBMS in the case of LTE-R
ÀúÀÚ(Author) ¹Ú¹ÎÁÖ   ¿øÈ«¼±   Min-ju Park   Hong-sun Won  
¿ø¹®¼ö·Ïó(Citation) VOL 22 NO. 06 PP. 0903 ~ 0909 (2018. 06)
Çѱ۳»¿ë
(Korean Abstract)
2017³â 12¿ù ¿øÁÖ~°­¸ª±¸°£ °í¼Óöµµ °³Åë°ú ÇÔ²² 250km/h±Þ öµµÅëÇÕ¹«¼±¸Á(LTE-R)ÀÌ ¼¼°è ÃÖÃÊ·Î »ó¿ëÈ­µÇ¾ú´Ù. LTE-RÀº À½¼º ¹× ¿µ»ó ÅëÈ­, °í¼Ó µ¥ÀÌÅÍ Àü¼Û, Ä¿¹ö¸®Áö ÀÌÁßÈ­ ¹× DU ÀÌÁßÈ­ µî ¸¹Àº ÀåÁ¡ÀÌ ÀÖÀ¸³ª UL, DL °¢ 10MHzÀÇ ÇÑÁ¤µÈ ´ë¿ªÆøÀ» »ç¿ëÇϹǷΠȿÀ²ÀûÀÎ ¹«¼±ÀÚ¿ø È°¿ëÀÌ ÇÊ¿äÇÏ´Ù. ±âÁ¸ÀÇ Unicast ¹æ½ÄÀº ÁÖÆļö È¿À²ÀÌ Á¦¾ÈÀûÀ¸·Î »ç¿ëÀÚ ¼ö°¡ Áõ°¡ÇÒ °æ¿ì ¸Á ºÎÇÏ·Î ÀÎÇÏ¿© ¼­ºñ½º¿¡ Á¦ÇÑÀÌ ÀÖÀ¸¸ç ÀÌ´Â ¾ÈÁ¤¼º°ú ½Å·Ú¼ºÀ» º¸ÀåÇØ¾ß ÇÏ´Â LTE-R Ư¼º »ó Å« ¹®Á¦·Î À̾îÁú ¼öµµ ÀÖ´Ù. ¹Ý¸é eMBMS¸¦ ÅëÇÑ Multicast ¹æ½ÄÀ» Àû¿ëÇÏ¸é ¿µ»óµ¥ÀÌÅÍ¿Í °°Àº ´ë¿ë·® µ¥ÀÌÅÍ Àü¼Û¼ö°¡ ´Ã¾îµµ ¾ÈÁ¤ÀûÀÎ ¼­ºñ½º Á¦°øÀÌ °¡´ÉÇÏ´Ù. º» ³í¹®¿¡¼­´Â ÀÌ·ÐÀü °è»ê°ª°ú ½ÃÇèÀ» ÅëÇØ LTE-R ¸Á ºÎÇϸ¦ °í·ÁÇÑ Unicast ±â¹ÝÀÇ »ç¿ëÀÚ ÀÓ°è¼ö¸¦ µµÃâÇÏ°í ÇâÈÄ LTE-RÀÇ eMBMS »ó¿ëÈ­ Àû¿ëÀ» À§ÇÑ °í·Á»çÇ×À» Á¦½ÃÇÏ°íÀÚ ÇÑ´Ù.
¿µ¹®³»¿ë
(English Abstract)
In December 2017, the world¡¯s first LTE-R for 250km/h high-speed railway was commercialized with the opening of Wonju-Gangneung high-speed railway. LTE-R has many advantages such as voice and video call, high-speed data transmission, coverage redundancy and DU redundancy. But it requires efficient use of radio resources because of a limited bandwidth of 10MHz for UL and DL, respectively. The existing unicast scheme has limited high frequency efficiency so when the number of users increases, service is limited due to the network load, which could be a problem for LTE-R in terms of stability and reliability. On the other hand, the multicast scheme via eMBMS can provide stable service even if the number of video users is high. This paper derives the number of unicast scheme users considering the LTE-R network with LAB test and calculation result, and proposes implementation plans and considerations for eMBMS commercialization on LTE-R.
Å°¿öµå(Keyword) LTE-R   eMBMS   À¯´Ïij½ºÆ®   ¸ÖƼij½ºÆ®   Unicast   Multicast  
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