Global continuous optimization is populated by its implementation in many real-world
applications. Such optimization problems are often solved by nature-inspired and meta …

An example communication system in a cellular network comprises: a processing system
comprising a controller and remote units, with the remote units being configured to …

H04740/00(2009.01) of a random access preamble on a first cell if the base station H047
72/00(2009.01) determines radio resources of the first cell are required for …

A wireless device receives a control message configuring cell groups comprising a primary
cell group and a secondary cell group. The wireless device receives a timing advance …

(57) ABSTRACT A method of operating multiple time alignment timers
(TimeAlignmentTimer) is provided for facilitating communication between and evolved Node …

H04W 74/08(2009.01) random access preamble on random access resources of a
H04752/36(2009.01) secondary cell in a secondary cell group. The wireless device H04L …

A wireless device receives a control command to transmit a random access preamble on a
first secondary cell. The wireless device repeatedly transmits the random access preamble …

A wireless device receives a control command for transmission of a random access
preamble on a first cell. The wireless device transmits the random access preamble in …

(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 …

Methods and apparatus' of determining radio link quality are disclosed. According to various
implementations, a user equipment detects an out-of-synchronization condition cor …