(12) UIllt€d States Patent (10) Patent No.: US 8,089,914 B2 Kim et al. (45) Date of Patent: Jan. 3, 2012 (54) RELAY AND METHOD OF ALLOCATING 20027/a5i2a9iii.9i§ iii 3/5883 €-“i.‘-‘‘‘°Tf‘“ “ a1‘ """ " 333/532 1s 1et . .................. .. ]s?’§A:.l]4)l;?\I/EDTH IN COMMUNICATION 2005/0141593 A1 6/2005 Pasanen et al. 2007/0081483 A1 4/2007 Jang et al. _ _ _ 2007/0086368 A1 4/2007 Lee et al. (75) Inventors: Ju-Hee KIIII, Dae]eOI1(KR); Shang-Llm 2007/0153758 A1 * 7/2007 Kang et al. .................. .. 370/338 Shin, Seoul (KR); Kyung-Soo Kim, 2008/0049718 A1* 2/2008 Chindapol et al. . 370/351 Daejeon (KR) 2008/0117854 A1 * 5/2008 Saifullah et al. 370/315 2008/0151809 A1* 6/2008 Chindapolet al. . 370/315 >I< <73) Assignee: Eiccinonico onoi Telecommunications 5883/88??? 21 4 8/5883 €2&?§?T.?:..11::111 ....... .11: 33835 Research Institute, Daejeon (KR) FOREIGN PATENT DOCUMENTS ( * ) Notice: Subject to any disclaimer, the term of this KR 1019990034353 5/1999 patent is extended or adjusted under 35 KR 1020030084243 11/2003 U_S_C_ 15403) by 720 dayS_ KR 1020040051007 6/2004 KR 1020070035869 4/2007 _ KR 1020070042224 4/2007 (21) APP1~ NO" 11/869360 WO 2005/067173 7/2005 (22) Filed: Oct. 9, 2007 OTHER PUBLICATIONS . . . Seong Jin Heo et al.; “A Datagram Delivery Strategy for Reducing (65) Pnor Pubhcatlon Data Retransmission Overheads During Handover”; Electronics AcaUS 2008/0130550 Al Jun. 5, 2008 demic Society Papers, vol. 36-S, No. 1; Jan. 1999; pp. 20-28. (30) Foreign Application Priority Data * Cited by examiner Dec. 1, 2006 (KR) ...................... .. 10-2006-0120579 Primary Examiner * Gary Mui (74) Attorney, Agent, or Firm * Lowe Hauptman Ham & (51) Int. Cl. Bemer LLP H04B 7/14 (2006.01) (52) U.S. Cl. ....... .. 370/315; 370/329; 370/401; 455/450 (57) ABSTRACT (58) Field of Classification Search ................ .. 370/241, To allocate a bandwidth to a terminal, a base station in a 370/241.1, 243, 315, 246, 328, 329, 395.4, communication system including a relay receives a band370/316, 320, 345, 313, 431; 455/45(%454 Width request code from the relay, and determines whether a See application file for complete search history. bandwidth request code that is the same as the received bandwidth request code has been received from the terminal. In (56) References Cited addition, when the same bandwidth request code has been
U.S. PATENT DOCUMENTS 6,785,252 B1 * 8/2004 Zimmerman et al. ...... .. 370/337
received from the terminal, the base station allocates the bandwidth to at least one among the relay and the terminal.
7,346,069 B2 3/2008 Lee et 31' 12 Claims, 9 Drawing Sheets
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Base station
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