Sharada Raghuram

6914913, Jul 5, 2005

Aug 27, 2002

10/228484

Arnold Sheynman - Glenview IL, US
Carl Grube - Barrington IL, US
Rajendra K. Kosgi - Mundelein, IN
Rohini Polisetty - Grayslake IL, US
Mahesh Perepa - Hyderabad, IN
Maloor Ramachandra Sreekrishna - Bangalore, IN
Krishnamurthy Srinath Vijayaprasad - Karnataka, IN
Sharada Raghuram - Buffalo Grove IL, US
Donald Arthur Dorsey - Vernon Hills IL, US
Kevin Michael Spriggs - Chicago IL, US
Ramesh Sudini - Palatine IL, US

Motorola, Inc. - Schaumburg IL

H04J003/16

370469

A multi-mode mobile wireless communications device architecture () including an application layer (), a services layer () interfacing the applications layer, a multi-mode layer () interfacing the service layer, and a hardware layer () interfacing the multi-mode layer. The multi-mode layer includes first and second interoperable radio access technologies, for example W-CDMA UMTS and GSM/GPRS technologies.

6961569, Nov 1, 2005

May 7, 2003

10/431025

Sharada Raghuram - Buffalo Grove IL, US
Richard C. Burbidge - Hook, GB
Donald A. Dorsey - Vernon Hills IL, US

Motorola Inc - Schaumburg IL

H04Q007/20

4554351, 4554321, 455421, 4554221, 455414

A method for a radiotelephone to scan for a higher priority (including home) public land mobile network (PLMN) without searching in all possible RATs and frequencies includes a first step of establishing an inclusive list of all frequencies in all radio access technologies (RATs) in use by the higher priority or home public land mobile network. A next step includes camping the radiotelephone on the higher priority or home PLMN. A next step includes obtaining the inclusive list from the establishing step by the camped radiotelephone from the higher priority or home PLMN. Afterwards, when the radiotelephone roams to a lower priority visited PLMN, it can begin scanning for the home (and higher priority) PLMN using only those frequencies from the inclusive list, thereby saving battery power.

7231213, Jun 12, 2007

Jun 30, 2005

11/172313

Donald A. Dorsey - Vernon Hills IL, US
Ravi Gopalakrishnan - Mundelein IL, US
Chandra K. Punyapu - Mundelein IL, US
Padmaja Putcha - Gurnee IL, US
Sharada Raghuram - Buffalo Grove IL, US
Li Su - Grayslake IL, US
Ramesh Sudini - Lake Zurich IL, US

Motorola Inc. - Schaumburg IL

H04Q 7/20

455445, 455423, 455 6711, 455450, 455436, 455437, 370437, 370310

While engaged in a dedicated channel, a User Equipment (UE) may get stuck on it. A method and the computer program product detects whether the UE is stuck on the dedicated channel (). When it is detected that the UE is stuck, the UE or the corresponding network in which the dedicated channel is located carries out a local release of the UE from the dedicated channel (), and the UE is placed in idle mode (). Locally releasing the UE from the dedicated channel curtails unnecessary battery consumption in the UE and limits wastage of network resources and bandwidth.

7333795, Feb 19, 2008

Oct 24, 2003

10/693247

Donald A. Dorsey - Vernon Hills IL, US
Srikrishna M R - Bangalore, IN
Sharada Raghuram - Buffalo Grove IL, US

Motorola Inc. - Schaumburg IL

H04M 11/04

4554041, 4554351

An emergency call placement method () used in user equipment in idle mode camped on a first cell of a wireless communication network having a first radio access technology includes the steps of requesting () a radio resource control connection using “emergency call” as an establishment request, changing () to a new cell in a different location area or routing area than the first cell, and requesting again () a radio resource control connection using “emergency call” as an establishment request. This method avoids performing a location area update or a routing area update when the user equipment changes to a new cell during an emergency call and thus may speed up placement of the emergency call by several seconds.

7519365, Apr 14, 2009

May 1, 2007

11/742699

Donald A. Dorsey - Vernon Hills IL, US
Sharada Raghuram - Buffalo Grove IL, US
Charles P. Binzel - Bristol WI, US

Motorola, Inc - Schaumburg IL

H04Q 7/20

4554351, 4554353, 455434, 4554321, 455515, 4554221

A method for a radiotelephone to search for a high priority, home, or home-equivalent public land mobile network (PLMN) includes a first step of registering and camping () the radiotelephone on a cell of visited PLMN. A next step includes uniquely identifying () the cell. A next step includes searching () for PLMNs with a higher priority than the visited PLMN while registered and camped on the uniquely identified cell. A next step includes storing () a history of those frequencies found that are not of a higher priority PLMN for the uniquely identified cell. Any subsequent searches for frequencies of higher priority PLMNs performed while registered and camped on that cell includes scanning () for available frequencies except for those frequencies listed in the history for the uniquely identified cell in which the radiotelephone is registered and camped.

20040204035, Oct 14, 2004

Sep 24, 2002

10/253328

Sharada Raghuram - Buffalo Grove IL, US
Donald Dorsey - Vernon Hills IL, US
Kevin Spriggs - Chicago IL, US

H04B001/00

455/553100, 455/450000

A multi-mode wireless communication device () includes two separate receivers () associated with two different radio access technologies and a multi-mode channel selection circuit (). The first receiver () and second receiver () operate simultaneously to receive a first signal () on a first channel and a second signal () on a second channel respectively. The multi-mode channel selection circuit () then obtains from the first signal first cell selection information () and from the second signal second cell selection information (). Then the multi-mode channel selection circuit () selects a suitable channel to camp on based on the first and second cell selection information (). The present invention also includes a method with the steps of receiving the first and second signals with simultaneously operating receivers (), obtaining first and second cell selection information (), and selecting a suitable channel to camp on based on the first and second cell selection information ().

20040224684, Nov 11, 2004

May 7, 2003

10/431617

Donald Dorsey - Vernon Hills IL, US
Sharada Raghuram - Buffalo Grove IL, US
Charles Binzel - Bristol WI, US

H04Q007/20

455/434000, 455/512000, 455/450000, 455/437000

A method for a radiotelephone to search for a high priority, home, or home-equivalent public land mobile network (PLMN) includes a first step of camping the radiotelephone on a cell of visited PLMN. A next step includes uniquely identifying the cell. A next step includes searching for PLMNs with a higher priority than the visited PLMN. A next step includes storing a history of those frequencies found that are not of a higher priority PLMN for the uniquely identified cell. Any subsequent searches for frequencies of higher priority PLMNs performed while camped on that cell includes scanning for available frequencies except for those frequencies listed in the history for the uniquely identified cell in which the radiotelephone is camped.

20050148349, Jul 7, 2005

Dec 19, 2003

10/741737

Padmaja Putcha - Gurnee IL, US
Steve Brandt - Round Lake IL, US
Donald Dorsey - Vernon Hills IL, US
Rohini Polisetty - Grayslake IL, US
Sharada Raghuram - Buffalo Grove IL, US

H04Q007/20

455458000

A method in a wireless communications device, including selecting () a cell, and after selection, configuring () the wireless communications device for a paging channel of a cell camped on previously using system information obtained for the cell camped on previously whether or not the selected cell is the same as the cell camped on previously. In some embodiments, updated system information is obtained for the selected cell if the selected cell is the same as the cell camped on previously, and the paging channel is reconfigured () based upon any updated system information obtained for the selected cell. In other embodiments, system information is obtained for the selected cell while the wireless communications device is configured for the paging channel of the cell camped on previously.