公开(公告)号：GB2492453A

公开(公告)日：2013-01-02

申请号：GB201210483

申请日：2012-06-13

Applicant: IBM

Inventor： WANG QING ,  LIN YONGHUA ,  TANG JIANBIN ,  ZHAN HAI ,  YAN RONG ,  WANG JUN SONG ,  ZHU ZHEN BO ,  ZHU CHAO

IPC: H04W72/12 ,  H04W72/00 ,  H04W72/04

Abstract: A method and apparatus for sharing frequencies in an orthogonal frequency-division multiplexing OFDM-based. wireless communication system, wherein the OFDM-based wireless communication system comprises a base station and a mobile device that work within a radio frequency band is discloses. The method comprises detecting an interference signal in the radio frequency band; setting by the base station, based upon the interference signal, interference indication information in a control header of a downlink frame to be sent to the mobile device, the interference indication information indicating a frequency range that is occupied by the interference signal in the radio frequency band and sending by the base station the downlink frame to the mobile device, such that the mobile device may, based upon the interference indication information, avoid the frequency range where the interference signal is located. A wireless system that applies the method of the present invention may avoid interference from another unknown system that works in the same radio frequency band without the necessity of generating an additional frame far broadcasting the interference indication information, such that the spectrum resources may be sufficiently utilized.

公开(公告)号：GB2491230A

公开(公告)日：2012-11-28

申请号：GB201207487

申请日：2012-04-30

Applicant: IBM

Inventor： WANG JUNSONG ,  LIN YONGHUA ,  WANG QING ,  YAN RONG ,  ZHU ZHEN BO ,  ZHAN HAI ,  ZHU CHAO

IPC: H04W16/14 ,  H04W72/04

Abstract: The present invention provides a method and. apparatus for reducing spectrum interference between wireless networks_ This is realized. by arranging at least one sub-coordinating apparatus, namely, a monitoring apparatus, in respective wireless network, and by arranging a coordinating apparatus, namely, an allocation apparatus in the whole network. Wherein, the sub-coordinating apparatus monitors the spectrum utilization situation of the wireless network where it is located, reports it to the coordinating apparatus, and requests the coordinating apparatus for spectrum resource when new spectrum resource is needed. The coordinating apparatus maintains the spectrum utilization information of each wireless network, and allocates appropriate spectrum resource to the sub-coordinating apparatus which requests spectrum resource based on the maintained information. Therefore, the interference of inter-wireless networks is reduced or even avoided through such overall management that the coordinating apparatus allocates corresponding spectrum resources to a plurality of wireless networks capable of sharing spectrum resources.