Patent ID: 8964607
Filing Date: 2015-02-24
Classification: H04L,H04W

Abstract:
1. A communication apparatus comprising: a first communication unit; and a second communication unit, wherein the communication apparatus is configured for a newer system in an area where an older system and the newer system coexist, the older system using a system frequency band with a basic bandwidth, and the newer system using a system frequency band wider than the basic bandwidth and employs a frequency division duplex scheme for communications; wherein the first communication unit is configured to communicate at least a downlink data channel of the newer system using a frequency band belonging to a first frequency range, wherein the second communication unit is configured to communicate at least an uplink control channel of the newer system using a frequency band belonging to a second frequency range that is separate from the first frequency range and lower than the first frequency range, and wherein the second frequency range is used for uplink and downlink communications in the older system, wherein the older system is a Long Term Evolution (LTE) system and the newer system is a successor system to the LTE system.