According to the process 70, the network may not transmit first system information on the DL-only carrier (e.g., all subframes are for DL transmission) to a communication device, wherein the first system information may include at least one information element for a UL transmission and the information element is mandatory to be present in the system information according to a 3GPP standard. The network may transmit second system information for a MBMS service on the DL-only carrier to the communication device, wherein the second system information does not have all of the at least one information element for the UL transmission. That is, the situation where the communication device may not know how to handle the DL-only carrier is avoided by not transmitting the first system information on the DL-only carrier. The communication device can receive the service (e.g., MBMS service) provided via the DL-only carrier by the network according to the second system information instead of the first system information. The network may be configured to transmit the first system information or not according to whether a carrier is a DL-only carrier or not. Similarly, the network may be configured to transmit the second system information or not according to whether a carrier is a DL-only carrier or not. When the network is configured to perform a transmission on a carrier which is not a DL-only carrier, the network transmit the first system information instead of the second system information. When the network is configured to perform a transmission on a carrier which is a DL-only carrier, the network transmits the second system information instead of the first system information.