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Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
HetNetsÀÇ »óÇâ ¸µÅ© ¿ë·® Çâ»óÀ» À§ÇÑ ¸ÅÅ©·Î »ç¿ëÀÚ¿Í ÆèÅä »ç¿ëÀÚ °£ Çù·Â Åë½Å ¹× |
¿µ¹®Á¦¸ñ(English Title) |
Uplink Capacity Improvement by Cooperative Communications and Radio Resource Partitioning of Macro-users and Femto-users for HetNets |
ÀúÀÚ(Author) |
Á¶¿ìÁ¾
¿À⿵
ÀÌÅÂÁø
Woo-Jong Jo
Chang-Yeong Oh
Tae-Jin Lee
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¿ø¹®¼ö·Ïó(Citation) |
VOL 40 NO. 03 PP. 0139 ~ 0146 (2013. 06) |
Çѱ۳»¿ë (Korean Abstract) |
½º¸¶Æ®Æù º¸±Þ·ü Áõ°¡·Î ÀÎÇØ ¼¿·ê·¯¸Á(Cellular Networks)¿¡¼ ¸ð¹ÙÀÏ µ¥ÀÌÅÍ Æ®·¡ÇÈÀÌ ±Þ°Ý ÇÏ°Ô Áõ°¡ÇÏ´Â Ãß¼¼ÀÌ°í ÀÌ·Î ÀÎÇØ ¸Á ºÎÇÏ Áõ°¡ ¹®Á¦°¡ ½É°¢ÇØÁö°í ÀÖ´Ù. ¸Á ºÎÇϸ¦ ÁÙÀ̱â À§ÇÑ ¹æ¹ýÀ¸·Î 3GPP(3rd Generation Partnership Project) µî Ç¥ÁØÈ ´Üü¿¡¼´Â Â÷¼¼´ë ¸ÁÀÎ HetNets(Heterogeneous Networks) °³³äÀ» µµÀÔÇÏ¿´´Ù. HetNets¿¡¼´Â ±âÁ¸ ¸ÅÅ©·Î¼¿(Macrocell) ¿µ¿ª¿¡ ÆèÅ伿(Femtocell) ¶Ç´Â ¸¶ÀÌÅ©·Î¼¿(Microcell)°ú °°Àº ½º¸ô¼¿(Smallcell)µéÀÇ ¼ºñ½º ¿µ¿ªÀÌ ÁßøµÇ¾î µ¿ÀÛÇÏ¸ç ½º¸ô¼¿ÀÇ ÀÇÇÑ ºÎÇÏ ºÐ»êÀÌ °¡´ÉÇÏ´Ù. È¿°úÀûÀÎ HetNets µ¿ÀÛÀ» À§Çؼ, º» ³í¹®¿¡¼´Â ¸ÅÅ©·Î¼¿°ú ÆèÅ伿 °£ µ¿ÀÏ Ã¤³Î °£¼· ¹®Á¦¸¦ °í·ÁÇÑ ÁÖÆļö ÇÒ´çÀ» À§ÇØ ¹«¼± ÀÎÁö ±â¼úÀ» È°¿ëÇÑ ÆèÅ伿ÀÌ °¡¿ë ÁÖÆļö ÀÚ¿øÀ» µ¿ÀûÀ¸·Î È®º¸ÇÏ´Â ¹æ¹ýÀ» Á¦¾ÈÇÑ´Ù. ¶ÇÇÑ ´Ü¸» °£ Á÷Á¢(Device-to-Device, D2D) Åë½Å ±â¼úÀ» ÀÌ¿ëÇÑ Çù·Â Åë½ÅÀ» ÅëÇØ ¸ÅÅ©·Î »ç¿ëÀÚ°¡ ÆèÅä »ç¿ëÀÚ¸¦ °ÅÃÄ ÆèÅä ±âÁö±¹¿¡ Á¢¼ÓÇÏ´Â ¹æ¹ýÀ» Á¦¾ÈÇÑ´Ù. ½Ã¹Ä·¹À̼ÇÀ» ÅëÇØ Á¦¾ÈÇÏ´Â Çù·Â Åë½Å ¹æ¹ýÀ» Àû¿ëÇÏ¸é ±âÁ¸ ¹æ¹ý¿¡ ºñÇØ ¸ÅÅ©·Î¼¿°ú ÆèÅ伿ÀÇ »óÇâ ¸µÅ© ¿ë·®ÀÌ Çâ»óµÊÀ» È®ÀÎÇÑ´Ù. |
¿µ¹®³»¿ë (English Abstract) |
Mobile data traffic has been rapidly growing up by the wide spread of smart phones and tablet PCs. Since conventional macrocells may not handle the growth of data traffic load, new technology which can afford large amount of data traffic such as heterogeneous networks (HetNets) by 3rd Generation Partnership Project (3GPP) is highly required. In HetNets, smallcells such as femtocells and microcells can coexist and operate along with conventional macrocells for load balancing. In this paper, we introduce dynamic radio resource allocation for femtocells using cognitive radio technology, which can take care of co-channel interference among femtocells and a macrocell. We also propose a cooperation mechanism using Device-to-Device (D2D) communications technology, which enables macro users to access to the adjacent femto base station (FBS) with the help of a femto user. Simulation results show that the uplink capacity of a macrocell and femtocells is improved when the proposed cooperation mechanism is properly adopted, compared to the case without cooperation. |
Å°¿öµå(Keyword) |
¹«¼± ÀÎÁö ÆèÅ伿
Çù·Â Åë½Å
ÁÖÆļö ÀÚ¿ø ºÐÇÒ
»óÇâ ¸µÅ© ¿ë·®
cognitive femtocell
cooperative communication
radio resource partitioning
uplink capacity
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