(57) ABSTRACT A wireless device transmits a first signal in a first cell group and transmits a
second signal in a second cell group. The wireless device adjusts a signal transmission …

(57) ABSTRACT A method and apparatus for handover in a wireless commu nication
system. A handover indication can be received from a source base station (120) that is …

Embodiments of the present invention disclose a handover method, User Equipment (UE),
and a network side device, which can shorten a handover delay of a control plane and an …

The present invention relates to a method and a device for time synchronization of an RBS
which has lost its GPS signal. The method in the time synchronization device comprises …

(57) ABSTRACT A serving base station receives a first message comprising at least one
parameter indicating whether a wireless device Sup ports configuration of timing advance …

The present invention provides a method for determining a timing advance group of a
serving cell, including: determining, by a source base station of a user equipment, a target …

BACKGROUND Wireless communication technologies have rapidly devel oped over the last
several years to the point where a mobile device. Such as a mobile cellular telephone or a …

Primary Examiner-Kibrom T Hailu (74) Attorney, Agent, or Firm—Banner & Witcoff, Ltd.(57)
ABSTRACT A wireless device transmits a random access preamble (RAP) on a first cell of a …

(57) ABSTRACT A plurality of cells are grouped into a primary cell group and a secondary
cell group. The wireless device receives a timing advance command comprising a time …

A method and apparatus for power control for wireless transmissions on multiple component
carriers corresponding to multiple serving cells associated with multiple timing advances are …