| 摘要 |
A method, apparatus, and system for providing a communication resource for a communication device in a communication system. In one embodiment, an apparatus includes a processor and memory having computer program code. The memory and the computer program code are configured to, with the processor, cause the apparatus to perform at least the following: transmitting a message attaching to an access station over the air in an unlicensed frequency spectrum; receiving an acknowledgement over the unlicensed frequency spectrum; and receiving a multicast message indicating one selected from a channel change within the unlicensed frequency spectrum for a group including the apparatus and a radio technology change to a predetermined radio technology not using the unlicensed frequency spectrum for the group including the apparatus. |
