Patent ID: 8649326

Claim:
A method of handling capability information of a mobile device in a wireless communication system, the method comprising: setting a first device capability recognized by a legacy base station of a network of the wireless communication system; and transmitting the first device capability with a second device capability to the network, to convey the capability information to the network, wherein the second device capability is recognized by an advanced base station of the network; wherein the legacy base station supports a 3GPP standard with a version equal to or earlier than the 3GPP Rel-9, and the advanced base station supports the 3GPP standard with a version equal to or later than the 3GPP Rel-10; wherein the first device capability is one of categories 1 to 5 of the ue-Category field defined in the 3GPP standard, and the second device capability is one of categories 6 to 8 of the ue-Category field defined in the 3GPP standard; wherein the mobile device sets the first device capability as the category 1, 2, 3 or 4, if the mobile device sets the second device capability as the category 6 or 7.