Motorola Corporation

Other

Motorola Mobility LLC

Motorola Solutions, Inc.

Richard Lionel Bennett

Jheroen Pieter Dorenbosch

John McFarland Harris

Steven Jeffrey Goldberg

Sean S Kelley

Anatoly Agulnik

Alain Charles Briancon

Mario Frank DeRango

W Garland Phillips

Mario A Rivas

David L Raymer

Soeren Henrik Thomsen

J Christopher Stanaway

Venkat Narayanan

John T Puma

Leonard G DeBarros

A communication device [includes a transceiver [to receive and transmit data. A message detection element [detects at least a first message and a second message in the data received by the transceiver [. A processor [modifies a state of the communication device [based on the first message and the second message. A positive acknowledgement is transmitted in response to the first message comprising a call pending message, and the state is modified to establish a session and inhibit an alerting of a user of the communication device. The state is modified to alert the user of the communication device [in response to the second message comprising a call start message.

Method and apparatus for the selective use of imperceptible invites

A WLAN () includes a first access point () for providing wireless service within a first coverage area, a second access point () for providing wireless service within a second coverage area and programmed to transmit probe responses, and a wireless communications unit () located within the first coverage area and operating on the wireless service of the first access point (). The communications unit () is programmed to monitor, or passively probe, for the probe responses, or is instructed by the first access point () on when to monitor for the probe responses, transmitted by the second access point (). By executing such passive probing, the communications unit () may make handover decisions for switching between the wireless service of the first access point () to the wireless service of the second access point () based on access point data included in the probe responses.

Passive probing for handover in a local area network

A method of and processing function for a resource for facilitating scheduling a meeting the methodincluding specifyingindividuals to participate in the meeting and desired resources for facilitating the meeting; communicatingwith scheduling agents for the individuals and with a processor functionfor a resourcecorresponding to the desired resources; negotiating with the scheduling agents to determine availability of the individuals and with the processor function to determine availability of the resource; and schedulingthe meeting at a time when the resource and a sufficient number of the individuals are available.

Method and apparatus for scheduling a meeting

When any remote unit () desires to create a talk group, it transmits an inbound message to a group call database (). The inbound message includes the identity of the requesting communication device, and the participants of the talk group. Upon receiving the request, group the call database () provides an outbound message to all members of the newly created talk group giving them a chance to opt out of inclusion into the new talk group. The database () then creates a database entry with the new talk group and those remote units that positively responded to the outbound message.

Method and apparatus for establishing a talk group

A reporting mobile station () operating in an ad-hoc wireless network () and method therein, receives, from the infrastructure (), designation information () identifying a target mobile station, and stores () the designation information. The reporting mobile station then detects () a communication from the target mobile station, and stores () information () about the communication. The reporting mobile station then reports () the call information to a predetermined lawful intercept entity ().

Method and apparatus for providing information intercept in an ad-hoc wireless network

A method of and apparatus for effecting a handoff from a first Internet Protocol (IP) connection to a second IP connection is disclosed. The method includes: communicating a packet data communication between a first station and a gateway (either acting as an application level gateway or as and endpoint for an SCTP tunnel) using the first IP connection and a first IP address for the first station, the gateway relaying the packet data communication with a second station; setting up the second IP connection with a second IP address for the first station, the first IP connection being a primary connection and the second IP connection being a secondary connection between the first station and the gateway, the first and the second IP connection existing concurrently; determining that the second IP connection should be the primary connection between the first station and the gateway; and changing the second IP connection to the primary connection by informing the gateway that the second IP address is the primary address using stream control transmission protocol (SCTP) messages, wherein the packet data communication is immediately switched over to the second IP connection.

Method and apparatus for effecting a seamless handoff between IP connections

A messaging system transmits to a subscriber unit ( ) on a plurality of channels ( ) operating concurrently. The system transmits ( ) control information for the subscriber unit on a control channel assigned to the subscriber unit, and transmits ( ) a personal message fragment intended for the subscriber unit on a first channel. The system also transmits ( ) a group-call message fragment that may be intended for the subscriber unit on a second channel. Before transmitting, the system schedules ( ) the transmission such that the probability that the personal and group-call message fragments will overlap temporally with one another and that either of the fragments will overlap temporally with the control information is reduced.

Method and apparatus for limiting message loss and message latency in a messaging system

A communication system in which a multipart analog message (480) is generated by a controller (112) by including an analog part delimiter (440) between successive independent analog parts (420, 431, 432, 433). The multipart analog message (480) is positioned within a synchronous protocol, in which a digital code is included to identify the position of the multipart analog message (480). The synchronous protocol is transmitted by a radio transmitter (202) and received by a selective call receiver (122). The selective call receiver (122) digitally decodes the position of the multipart analog message (480) and begins recovery of the multipart analog message (480) at the position. The selective call receiver (122) recovers the part delimiters (440) and uses them to identify the independent analog parts (420, 431, 432, 433). One of the independent parts, which is a audible response, is selected by the user and used to generate a response.

Multipart analog message and a response in a communication system

Adaptive digital coding of received analog information based on signal strength can be accomplished in the following manner. Once a repeater receives analog information from a communication unit, the signal quality of the received analog information is determined. Next the signal quality of the received analog information is compared with a first signal quality value. If the signal quality of the received analog information is above the first signal quality value, the received analog information is digitally coded based on a first digital coding format. If the signal quality of the received analog information is below the first signal quality value, the received analog information is digitally coded based on a second digital coding format.

Method for repeaters to adaptively digitally code received analog

An improved method for detecting that a facility delay has changed is provided. According to the invention, a facility having a delay that may change is coupled to a transmitter and a receiver. The transmitter is coupled to a first clock that transmits a first signal based on its current reading (the first clock signal) from time to time to the receiver via the facility. The receiver is coupled to a second clock that generates a second signal based on its current reading (the second clock signal) responsive to receiving the first clock signal. In operation, the first clock signal is fed downstream (via the facility having the delay), thereby triggering the second clock signal. The two clock signals are then detected and the difference in the two clock readings computed, thereby forming .DELTA..sub.n. The process is then repeated for successive first and second clock signals, thereby forming .DELTA..sub.n+1. The absolute value of .DELTA..sub.n -.DELTA..sub.n+a is then compared with a predetermined value to determine whether the facility time delay has changed. This method is particularly useful in simulcast broadcast systems.

Delay equalization detector

A simulcast system (100) having remote sites (104) that can transmit a carrier signal (107) having a modulation signal imposed thereon, wherein both the carrier and the modulation signal are derived from the same reference. Monitoring stations (108) receive transmissions from two or more remote sites, and determine the differential, if any, between the frequencies of the recovered modulation signal. The system then acts upon this information to provide correction information to one or more of the remote sites as necessary to ensure substantial carrier frequency similarity between the remote sites.

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Southlake, TX, United States of America

Richard Lionel Bennett