Motorola Corporation

Motorola Mobility LLC

Marcia Jean Otting

Mark Edward Pecen

Stephen Andrew Howell

Charles Philipp Binzel

Kent D Rager

Mark Pecen

Robert Faust D'Avello

Timothy M Burke

Phillip D Rasky

Niels Peter Skov Andersen

Eric Jay Hefner

Donald Arthur Dorsey

Robert M Johnson, Jr

David J Theobald

Jerome Parron

John P Kramer

A method for selecting an alternate wireless communication system for a wireless communication device is disclosed. The method comprises using a first radio access technology (RAT) by a wireless communication device when scanning () for an initial wireless communication network (). The wireless communication device further registers () to the initial wireless communication network (). Then, the initial wireless communication network () determines () alternate RAT wireless communication network information for the wireless communication device and sends () the alternate RAT wireless communication network information to the wireless communication device. The wireless communication device receives the alternate RAT wireless communication network information and selects () a first alternate wireless communication network from within the alternate RAT wireless communication network information, scans for the first alternate wireless communication network using an alternate RAT and registers with the first alternate wireless communication network using the alternate RAT.

Method and apparatus for detecting an alternate wireless communication network

A method in a wireless communications device including determining whether the device is operating in a network other than a home network, determining whether to search for the home network when not operating in the home network by comparing network record information associated with the network in which the device is operating to reference information. In some embodiments, the device indicates that it is operating in a network other than the network in which it is operating.

Home network searching when roaming in wireless communications networks

An apparatus and method for responding to unlicensed network failure. A failure in a connection to an unlicensed wireless local area network controller can be detected. A wireless local area network access point connection to the unlicensed wireless local area network controller can be released. An attempt can be made to access wireless wide area network services.

Apparatus and method for responding to unlicensed network failure

A method in a communication device () comprises registering () on a first network (), identified by a first network ID, stored in the communication device. Then receiving, from the service provider, an acting network ID which identifies a second network (). Storing the acting network ID on the communication device and reprioritizing the second network, identified by the received acting network ID, as the home network. The communication device then registers on the second network in response to the reprioritizing the second network.

Method and apparatus for communications network management

An apparatus () and method () for enabling a wireless communication device operating during access class restrictions to receive an incoming emergency call for a predefined time period are provided. After the wireless communication device () makes an emergency call to an emergency service center such as police (), the wireless communication device () is enabled to respond to a return call from the emergency service center (). The wireless communication device accepts the return call based upon the emergency access class information () and the priority level () of the return call.

Priority E911 call back during access class restrictions

A method and apparatus for cell reselection during transmission of data between a mobile station and a network through a first cell of a plurality of cells, each of the plurality of cells defining a corresponding radio coverage area. A control stack () organizes the data within frames during the transmission of data, and an adjustment module () adjusts a size of the frames prior to detection that a second cell of the plurality of cells is a candidate for reselection.

Method and apparatus for reducing the impact of cell reselection of GPRS/EDGE data rates

A method for a radiotelephone to scan for service in a radiotelephone system having a plurality of carriers within a corresponding geographic area includes establishing ( ) a list of a predetermined number of carriers having the strongest signal strengths from cells proximate to the cell where the radiotelephone is camped. A next step includes determining ( ) those proximate carriers from the list that are unsuitable for reselection by the radiotelephone. A next step includes scanning ( ) for other suitable carriers within the area to substitute for those unsuitable carriers found in the determining step. A next step includes modifying ( ) the list to include those suitable carriers found in the scanning step.

Method for a cellular radiotelephone to scan for service from adjacent cells

A mechanism for notifying a mobile station of receipt of a packet-switched paging message in a GSM communication system. A base station controller ( ) sends the packet-switched paging message to the mobile station ( ) along a main dedicated control channel in response to the mobile station being capable of operating in a dual transfer mode and being currently engaged in circuit-switch voice interchange activity, resulting in a simultaneous voice and data transmission in dual transfer mode.

Method for enabling receipt of a packet-switched page by a mobile station

In a mobile station (MS) of a cellular radiotelephone system, a method of searching for the MS's home public land mobile network (HPLMN) when the MS is camped on a non-HPLMN. The method is performed in thirty second intervals while the MS is already in its receive ready (higher current-drawing) state. The method performs strategic measurements of the receive signal level in order to determine if it is likely that the HPLMN has become available again. If the probability is high that the HPLMN has become available, further data is gathered on the likely available channel. Once the channel is identified, the MS begins the camping procedure to register on the HPLMN.

Method for continuous home public land mobile network search

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 radiotelephone device receiving network information, transmitted along a radio channel, from a network includes an acknowledgement coordination module determining a mode for exchange of acknowledgement information with the network. The radiotelephone device transmits the acknowledgement information to the network through a main dedicated control channel, using a defined service access point identifier corresponding to transmission of the acknowledgement information through the main dedicated control channel, in response to the mode for exchange of acknowledgement information being the main dedicated control channel. The radiotelephone device transmits the acknowledgement information to the network using a temporary block flow acknowledgement interchange in response to the mode for exchange of acknowledgement information being other than the main dedicated control channel.

Method and apparatus for supporting radio acknowledgement information for a uni-directional user data channel

A method for allowing a radiotelephone to scan for alternate radiotelephone systems, where each cellular radiotelephone system is within a corresponding geographic area and each cell has a base station providing paging and voice communication, includes a first step of registering the radiotelephone on a radiotelephone system. A next step includes establishing whether alternate technology scanning has been enabled for the radiotelephone. If alternate technology scanning is disabled, the radiotelephone receives paging messages from the base station and acknowledges the paging messages addressed to the radiotelephone. If alternate technology scanning is enabled, the radiotelephone scans for an alternate technology while the base station repeats any paging messages addressed to the radiotelephone and ignores a lack of acknowledgement from the radiotelephone for paging messages addressed to the radiotelephone.

Method for a radiotelephone to scan for alternate radiotelephone systems

An apparatus (304) for scanning among a plurality of channels in a radio communication system (300) includes receive circuitry (310) and control circuitry (312). The receive circuitry (310) is capable of being tuned to any one of the plurality of channels and measures reception strength of the tuned channel. The control circuitry (312) controls the receive circuitry (310) to scan through all of the plurality of channels one at a time. The control circuitry (312) stores a first reading of a measured reception strength of the tuned channel before powering off the receive circuitry (310). The control circuitry (312) stores a second reading of a measured reception strength of the tuned channel after powering the receive circuitry (310) back on.

Channel scanning apparatus and method

A signal level indicator (204, 304) displays the magnitude of an input signal (421) by illuminating each of a number of five LEDs (314-318, 414-418) for an individual period of time. The number of LEDs to be illuminated and the individual period of time that each is to be illuminated varies with the magnitude of the input signal (421).

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Mundelein, IL, United States of America

Marcia Jean Otting