Patent ID: 9462524
Filing Date: 2016-10-04
CPC Classification: H04W

Claim Text:
1. A method of cell change involving a wireless device, the cell change being from a first group of cells to a multi-cell configuration of a second group of cells, the method comprising: receiving a cell change command; synchronizing the wireless device to interoperate with a first cell of the second group of cells within a first specified period of time; and synchronizing the wireless device to interoperate with at least one remaining cell of the second group of cells within a second specified period of time ending after an end of the first specified period of time, the second specified period of time being given by: where T IU is an interruption uncertainty when changing from an Enhanced Universal Terrestrial Radio Access, E-UTRA, technology to a Universal Terrestrial Radio Access, UTRA, technology, F MAX denotes a maximum number of radio frames within transmission time intervals, TTI, of all transport channels that are multiplexed into a same coded composite transport channel, CCTrCH, on a target cell of the UTRA, T SYNC is a time required for measuring a downlink dedicated physical control channel, DPCCH, KC is a number of known target cells in a message, and OC is a number of target cells that are not known in the message.