Logically distinct network within a LTE network for machine type communications (MTC) terminals

摘要

According to a first aspect of the present invention there is provided a base station for receiving uplink data transmitted from mobile terminals of a first type and mobile terminals of a second type over a radio interface using a plurality of sub-carriers. The mobile terminals of a first type is arranged to transmit uplink data on a first group of sub-carriers of the plurality of sub-carriers over a first bandwidth and the mobile terminals of the second type is arranged to transmit uplink data on a second group of sub-carriers of the plurality of sub-carriers within the first group of sub-carriers over a second bandwidth, the second bandwidth being smaller than the first bandwidth. The base station is arranged to grant uplink radio resources in response to random access request messages transmitted by mobile terminals of the first type transmitted on a first random access channel and to grant uplink radio resources in response to random access request messages transmitted by mobile terminals of the second type transmitted on a second random access channel. The random access request messages transmitted on the second random access channel are transmitted on sub-carriers within the second group of sub-carriers.