首页>
外国专利>
NARROWBAND SERVICE DEPLOYMENT IN WIDEBAND CARRIER GUARD-BAND
NARROWBAND SERVICE DEPLOYMENT IN WIDEBAND CARRIER GUARD-BAND
展开▼
机译:宽带运营商卫带中的窄带服务部署
展开▼
页面导航
摘要
著录项
相似文献
摘要
A wideband carrier (e.g., LTE carrier) is shifted up or down in frequency, within an allocated frequency band, by an integer multiple of the channel raster spacing (e.g., 100 KHz). This reduces the size of the guard band on one side of the carrier, and expands the guard band on the other side. A narrowband carrier (e.g., NB-IoT carrier) is then deployed within the expanded guard band, at or near a frequency such that the transmission is orthogonal to the wideband carrier transmissions, such as by using a shared N frequency grid spacing (e.g. at 100 KHz spacing, and using 15 KHz subcarriers). The narrowband carrier thus maintains orthogonality with the wideband carrier, but has “room” within the expanded guard band to both transmit on a frequency close to the frequency grid spacing, and to boost transmit power (e.g., by 6 dB), while remaining within the spectral mask. The shifted wideband carrier is transparent to wideband UEs, as the frequency shift is an integer multiple of the channel raster spacing.
展开▼