Patent ID: 9444667
Filing Date: 2016-09-13
CPC Classification: H04L,H04W

Claim Text:
1. An apparatus for signal modulation, comprising: a determination unit, configured to determine at least one guard band between at least two continuous available sub-bands among multiple available sub-bands that can be used by a communication entity and are discrete; and a modulation unit, configured to: generate a modulated signal in one of the at least two continuous available sub-bands; use the at least one guard band in signal modulation for the communication entity; and perform a frequency shift on the modulated signal in a direction towards one of two ends of the at least two continuous available sub-bands, so as to generate spare bands at the two ends of the at least two continuous available sub-bands, respectively, wherein a sum of bandwidths of the spare bands at the two ends is equal to a bandwidth of the at least one guard band.