ALLOCATING TRANSMISSION RESOURCES TO MTC-TYPE TERMINALS

摘要

An apparatus and method for allocating transmission resources to MTC-type terminals and transmitting data in mobile telecommunication systems in dependence upon the capability of the RF receiver equipment of those terminals. Where a virtual carrier is established to carry data for a given MTC-type device, the position of the center frequency for that virtual carrier is assigned on the basis of both the capability of the RF receiver equipment of that terminal and the degree of traffic congestion on the frequency band at which the virtual carrier has been established.

主权项

1. A base station for communicating data with at least one terminal in a wireless telecommunications system using a first plurality of Orthogonal Frequency Division Multiplex, OFDM, sub-carriers spanning a first frequency bandwidth, at least one of said subcarriers being an unused centre frequency for the first frequency bandwidth,
the base station being configured: to detect the bandwidth status of a receiver of the terminal; to assign a centre frequency for a virtual channel in accordance with said detected bandwidth status, the virtual channel being a group of sub-carriers selected from said first plurality of OFDM sub-carriers and spanning a second frequency bandwidth, said second frequency bandwidth being substantially narrower than the first frequency bandwidth; to allocate at least one unused subcarrier to said assigned centre frequency; and to communicate user-plane data with the terminal using the virtual channel.