Motorola Corporation

Motorola Mobility LLC

Donald Arthur Dorsey

Sharada Raghuram

Charles Philipp Binzel

Ramesh Sudini

Rohini Polisetty

Richard Charles Burbidge

Arnold Sheynman

Padmaja Putcha

Marcia Jean Otting

Minh H Duong

Robert M Johnson, Jr

Mark Edward Pecen

Joseph M Hansen

Christopher F Bussan

Li Su

Carl A Grube

Gary A Welsch

Xiaofeng Bai

Rajendra K Kosgi

Mahesh Perepa

Maloor Ramachandra Sreekrishna

Krishnamurthy Srinath Vijayaprasad

Kevin Michael Spriggs

Nicholas Francis Jungels

Steve Brandt

Srikrishna M R

Ravi Gopalakrishnan

Chandra K Punyapu

Emergency call placement methods and apparatus for a user equipment in a wireless network are disclosed. The placement method includes detecting initiation of an emergency call during a non-idle connection mode of the user equipment (), terminating the non-idle connection mode () and initiating a new connection for the emergency call (). This method allows the new connection to use a location methodology to locate the user equipment in response to the emergency call. The disclosed wireless user equipment () is configured to implement the disclosed method.

Methods and apparatus for placement of an emergency call

A mobile station (MS) is provided that includes one or more memory devices that maintain a RAT preference rule and that include a removable memory device (RMD) that maintains a data file that includes a prioritized listing of one or more PLMN/RAT combinations. The MS detects a RAT and a PLMN broadcasting on that RAT and determines a type of the RMD. When the RMD is a type that would maintain information on the detected RAT, the MS determines a priority of the detected PLMN/RAT combination relative to other PLMN/RAT combinations based solely on the prioritizations included in the data file. When the RMD is a type that would not maintain information on the detected RAT, the MS determines a priority of the detected PLMN and RAT relative to other PLMN/RAT combinations based on the RAT preference rule in conjunction with the listing of PLMN/RAT combinations in the data file.

Method and apparatus for using a radio access technology in a mobile station employing a removable memory device

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.

Method for a radio telephone to search for higher priority networks

Reselection methods for wireless communication devices, for example cellular telephones, that reduce power consumption by receiving periodic paging information () concurrently with the performance of periodic signal measurements () and reselection processing () to increase minimal power consumption mode operation. In some embodiment, the reselection processing () is performed on prior signal measurements () while obtaining present signal measurement data ().

Reselection optimization in mobile wireless communication devices and methods therefor

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.

Emergency call placement method

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.

Method to detect a user equipment stuck on a dedicated channel

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.

Method for a radiotelephone to scan for higher priority public land mobile network

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.

Multi-mode interoperable mobile station communications architectures and methods

A method of and apparatus for optimizing a minimum turn around time (MTAT) between (a) a reception by a first device of a first infrared data communication (IRDC) frame sent from a second device and (b) a transmission by the first device of a second IRDC frame to the second device. The MTAT value received from the second device is loaded into a storage device. The first IRDC frame from the second device is received, and a counter of the first device either resets upon reception of each of the plurality of characters of the first IRDC frame or increments when none of the plurality of characters are received. The first device transmits the second IRDC frame to the second device when the counter value reaches the MTAT value.

Method of and apparatus for optimizing a minimum turn around time during an infrared data communication

A wireless communication apparatus ( ) and communication method provides an audio-based call connection operation. For example, one method includes receiving an incoming call message ( ) and receiving an input audio answer signal ( ), such as a user's voice, in response to the incoming call message ( ). This method includes detecting an amplitude or characteristic of the input audio answer signal ( ) and sending an answer call message ( ) based on the detected amplitude level of the input audio answer signal ( ). In another embodiment, the process includes storing the input audio answer signal ( ) as preconnection audio information ( ) and subsequently sending the preconnection audio information ( ) as a post connection greeting. For example, a user saying the word &ldquo;hello,&rdquo; completes the call without any additional greeting required. In another embodiment, prestored audio greeting information, such as key word templates, is used to compare with the input audio answer signal ( ) to determine whether to send the answer call message ( ) to complete the call connection.

Method and apparatus for audio signal based answer call message generation

A method for sending acknowledged transport data between a mobile station ( ) and a base station system ( ) in a GPRS system ( ) in which a protocol control unit ( ) counts the number of data blocks in an acknowledgement message sent by the mobile station in response to a data packet transmission. A heuristic is then defined, based on the number of data blocks counted, and the number of corresponding data blocks corresponding to a subsequent data packet transmission is compared with the heuristic to determine that a virtual acknowledgement channel is being requested when the number of corresponding data blocks in the subsequent packet data transmission is less than the heuristic.

Method for supporting acknowledged transport layer protocols in GPRS/edge host application

A microcontroller (100) with an expansion port (112) includes internal ROM (110) and EEPROM (109) and an external expansion port. The EEPROM internal to the microcontroller is programmable only when the CPU (102) is executing instructions within the internal ROM. Additionally, instructions associated with a secure operation stored in the internal ROM may not be accessed without first executing the beginning instruction of the secure operation. Attempts to begin execution of the secure operation at any point other than the legal entry address will cause the internal ROM (110) to be disabled.

Microcontroller which limits access to internal memory

A receiver has a channel scan mode of operation and a communication mode of operation. In the channel mode of operation, the passband of a filter is narrowed relative to the passband of the filter in the communication mode. According to another aspect of the circuit, a local oscillator is selectively phase locked to an internal clock during channel scanning and locked to the incoming signal during a communication mode operation.

Apparatus for detecting a signaling channel during scanning including a

Apparatus and method for transferring segmented memory between memory units determines a need for memory transfer and searches a memory unit segment by segment until a valid data record is found. This valid data record is conveyed to another memory unit via the asynchronous mode. If a valid data records is not found within a predetermined amount of time, a message identifying the memory segment last searched is conveyed. If no remaining valid data records are found, a message with no information is conveyed. Priority is given to asynchronous messages.

Growing community of inventors

Vernon Hills, IL, United States of America

Donald Arthur Dorsey