Motorola Corporation

Motorola Mobility LLC

Motorola Solutions, Inc.

Google Technology Holdings LLC

Floyd D Simpson

Jian-Cheng Huang

Huai Y Wang

Kenneth D Finlon

Xiaojun Li

Timothy J Wilson

Stephen P Emeott

Brian Keith Smith

Sunil Satyamurti

Zaffer S Merchant

Ye Chen

Nattavut Smavatkul

Henri Moelard

Jaime Andres Borras

Robert J Schwendeman

Paul Edward Gorday

Thomas V D'Amico

David F Willard

Michael H Baker

Aparna Pandey

Gerrit Hiddink

Jian C Huang

Christopher G Ware

Eryk Dutkiewicz

Oleg Andric

Raad Raad

Pieter-Paul S Giesberts

David Frank Willard

Jian Chen Huang

Thomas Victor D'AMICO

Huaiyuang Wang

A mobile communication device () contains both a WAN modem () and a PAN modem () which operate on interfering radio frequencies. To mitigate interference, and still permit real-time communication operation, the PAN is prevented from transmitting while the WAN is receiving (). The PAN carries the real-time data via an active link () between the PAN modem and a remote device (). The active link uses a retransmission protocol, which allows recovery of suppressed packets within a given period. The PAN modem is disabled for periods shorter than a maximum time which guarantees success transmission or retransmission of the PAN data. To further aid successful operation of the PAN retransmission operation, the WAN base station aggregates data into a single downlink burst.

Method for operating a wide area network modem and a personal area network modem in a mobile communication device

A mobile communication device () includes both a wide area network (WAN) radio modem (), and a personal area network (PAN) radio modem (), which operate on similar frequencies. When the both the WAN and PAN modems are operating and carrying time-sensitive data, the WAN modem disables transmission by the PAN modem when the WAN modem is due to receive data from a WAN base station (), including neighbor scans. The duration and frequency of disabling the PAN modem is controlled so that the retransmission is successful.

Method and apparatus for performing neighbor scans on a wide area network in a mobile communication device operating a personal area network

A method () and system () for adding a connection identifier to an existing power saving class. The method can include the steps of&#x2014;at a mobile unit () that is associated with at least one existing power saving class&#x2014;generating () a type-length-value that specifies the identification of the existing power saving class, and integrating () the type-length-value into a dynamic service message request. The method can also include the step of transmitting () the dynamic service message request to a base station () such that the connection identifier will be automatically added to the existing power saving class without requiring deactivation or redefinition of the existing power saving class.

Method and system for adding a new connection identifier to an existing power save class

The invention concerns a method () and system for improving transmission or receipt of channel descriptors. The method can include the steps of&#x2014;in a wireless communication system () that periodically broadcasts regular channel descriptors () at a set interval ()&#x2014;changing () a modulation scheme and transmitting () one or more supplementary channel descriptors () during the set interval between regular channel descriptors. The method can also include the step of periodically transmitting () a channel descriptor count () that provides an indication of the changed modulation scheme.

Method and system to improve transmission and receipt of channel descriptors

A mobile communication device () includes a wide area network (WAN) modem () for communicating over a wireless WAN. During a voice call, the WAN modem operates in a power save mode () but must occasionally scan for handover candidate base stations (). The modem goes directly from the power save mode to a scan mode at an agreed upon time, first selected by the mobile communication device, but which may be modified by the base station.

Method for transitioning a wide area network modem of a mobile communication device between a power saving mode and a scan mode

An access point utilizes information () as provided by various subscriber units to provide a message () (as included with, for example, a beacon transmission) that reflects near term likely utilization of a shared communication resource. A subscriber unit () can then utilize that information to schedule its own monitoring activity. This, in turn, permits the subscriber unit to similarly schedule power saving activities to accommodate this reception schedule.

Reception timing method and apparatus

This application describes an enhanced passive scanning method for a wireless local area network, including the steps of transmitting at least one of a beacon signal or a gratuitous probe response in a WLAN channel by an access point. The gratuitous probe response is a supplemental beacon signal that is transmitted at intervals between the occurrence of regular beacon signals, but contains only essential information to allow mobile station manage roaming and timing.

Enhanced passive scanning

The application provides an enhanced passive scanning method for a wireless local area network, including the steps of receiving () at least one of a beacon signal () or a gratuitous probe response (), updating () a site timing table entry in a site timing table based on the received beacon signal () or gratuitous probe response (), setting () a scan start time based on entries in the updated site timing table, and determining () a power mode for a wireless communication device based on the scan start time. An enhanced passive scanning system () and computer usable medium for enhanced passive scanning is also disclosed.

The invention concerns a method () and system () for coordinating a sleep mode wake-up time. The method can include the steps of entering () a sleep mode and selecting () a paging group, advising () a base station () of the sleep mode and the selection of the paging group and coordinating () a wake-up time of the sleep mode with a second power saving mode that includes a common availability time () for mobile stations () communicating with the base station to detect signals from the base station. As an example, the second power saving mode () can be an idle mode, and the common availability time can be a listening interval of the idle mode.

Method and system for coordinating a sleep mode wake-up time

The invention concerns a method () and system () for improving the efficiency of a mobile station () during a listening interval (). The method can include the step of setting () a paging message indicator () or a neighbor advertisement message indicator () in which the paging message indicator indicates whether a paging message () is the last paging message designated for the mobile station in the listening interval and the neighbor advertisement message indicator indicates the presence of a neighbor advertisement message (). The method can also include the step of transmitting () the paging message indicator or the neighbor advertisement message indicator to the mobile station. Based on these indicators, the mobile station can selectively enter a sleep state during and/or after the listening interval to conserve battery life.

Method and system to improve efficiency of mobile station during listening interval

A mobile terminal () wakes up from a low power state and initiates a frame exchange in a wireless local area network that supports voice traffic by transmitting a polling frame (). If the mobile terminal had voice data to send, it is included in the polling frame. In response to receiving the polling frame, the access point transmits a delay frame () to acknowledge receipt of the polling frame. If the access point has data for the polling mobile terminal, it transmits a non-delay frame () including the voice data, otherwise it transmits a null frame (). The mobile terminal acknowledges the data from the access point (), and goes back to sleep until the beginning of the next service interval.

Method for performing transactions in a wireless local area network

In the present invention, the subscriber unit () obtains a set of access point identifiers and measurement opportunity information for each access point identifier. A first measurement is performed on a first access point identified from the set of access point identifiers. A current timer value is determined after completing the step of performing, and a second access point identified from the set of access point identifiers in which to perform a second measurement is selected. Selecting the second access point is based on at least the measurement opportunity information for the second access point in relation to the current timer value.

Method and apparatus for performing neighbor tracking in a wireless local area network

A method of providing RF signal quality information which includes the step of a probe request generator () monitoring a channel for probe requests being transmitted by a station () and/or probe responses being transmitted by an access point (). The probe request generator can determine a time period between the successive probe request transmissions received from the station or successive probe responses received from the AP. The probe request generator can generate a series of probe requests () having the determined time period between successive probe request transmissions. The series of probe requests signal an access point () to transmit probe responses () which are detectable by the station.

Method and system for providing adaptive probe requests

The invention concerns a method () and system () for consolidating PSCs. In particular, in a mixed media environment having a plurality of application connections associated with different PSCs, the method can include the steps of identifying () a primary application connection, defining () a consolidated PSC based on a demand property of the primary application connection and consolidating () at least some of the remaining application connections with the consolidated PSC. As such, the consolidated PSC may be associated with multiple application connections. The method can also include the steps of deactivating () the consolidated PSC when a deactivation indicator is received and reactivating () the consolidated PSC when a reactivation indicator is received.

Method and system for consolidating power saving classes

A communication unit () can have at least a first receiver () and a second receiver (). The latter typically consumes more power than the former during ordinary operation. Pursuant to one embodiment a communication unit can use the lower-power receiver to detect energy on a monitored channel while the second receiver is retained in a reduced power mode of operation. Upon detecting an absence of channel activity the second receiver can be restored to normal operability to effect such activities as are then presently required.

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Lake Worth, FL, United States of America

Floyd D Simpson