Abstract: A wafer-level chip-scale package (WLCSP) includes an integrated circuit (IC) chip, and die bonding pads with a redistribution layer (RDL) having multiple via structures located directly below the footprint of a solder ball placed on the bonding pad. The via structures electrically connect the solder ball to a top metal layer of the IC chip. The RDL may extend beyond the solder ball's footprint and have additional vias that connect to the top metal layer, including vias located under and connected to other solder balls. The bonding pads have a low R-on resistance and are not susceptible to thermal-induced cracking.

Abstract: A method for a cellular system with cells which can accommodate user terminals, UEs and respective base stations, and also an RNC for the control of the base stations, comprising maintaining a Neighbor Cell list and an Active Set list in the RNC, and letting a UE in a cell measure and report transmissions from Neighbor Cells to its RNC. The method comprises letting the UE make Detected Set measurements and report them to its RNC. The method also comprises letting the RNC maintain a third list of parameters for other cells, and letting the RNC use received Detected Set measurement reports from a UE and said third list to determine the identity of cells of a Detected Set, and using the identified cells in the Detected Set report to update the first UE's Active Set.

Abstract: A method for a cellular system with cells which can accommodate user terminals, UEs and respective base stations, and also an RNC for the control of the base stations, comprising maintaining a Neighbour Cell list and an Active Set list in the RNC, and letting a UE in a cell measure and report transmissions from Neighbour Cells to its RNC. The method comprises letting the UE make Detected Set measurements and report them to its RNC. The method also comprises letting the RNC maintain a third list of parameters for other cells, and letting the RNC use received Detected Set measurement reports from a UE and said third list to determine the identity of cells of a Detected Set, and using the identified cells in the Detected Set report to update the first UE's Active Set.