Motorola Corporation

Motorola Mobility LLC

Google Inc.

Google Technology Holdings LLC

Jean Khawand

Charbel Khawand

Chin Pan Wong

David R Heeschen

Radu C Frangopol

Marc Andre Boillot

Moshe Refaeli

Bin Liu

Oded Norman

Yoram Salant

Gordon Wayne James

Mitchell E Renko

Jianping W Miller

Joe Abourjeili

Michael A Heck

A device establishes a first communication session with an endpoint and is configured to perform the first session via one of two different call configurations. In response to unplanned termination of the first session, the device identifies a specific call terminating condition and determines when the call terminating condition is within a first subset of call terminating conditions. Then, in response, the device: creates a record of the first session, including information identifying the established call configuration; and activates a timer associated with the record. The device then autonomously accepts a request to establish a second communication session from an endpoint and implements the same call configuration for the second session, in response to the request (a) being received before expiration of the timer and (b) establishing the second session between the communication device and the same endpoint. With a Push-to-Talk call, the established call configuration is full duplex mode.

Selective auto-accept of full duplex push to talk call

A radio communication device has a baseband processor acting as an InterProcessor Communication (IPC) server and an application processor acting as an IPC client. The baseband processor and the application processor communicate with each other via an IPC network. The IPC server and the IPC client can switch functions via negotiation to allow the IPC client to become the new IPC server. The IPC network includes multiple IPC clients, and remaining IPC clients are instructed to change the IPC address of the IPC server if the IPC client becomes the new IPC server. The IPC network allows any processor that adopts the IPC as its interprocessor communication stack to co-exist together and operate as if the two were actually running on the same processor core sharing a common operating system and memory.

Interprocessor communication protocol

A multi-camp mobile communication device () includes a first radio modem () and a second radio modem (). Each modem is designed to communicate with a respective communication system (). Upon engaging in an interconnect call () over the first modem with the first communication system, the multi-camp mobile communication device receives a dispatch call at the second modem () from the second communication system. The multi-camp mobile communication device replies to the dispatch call with a pre-recorded message (). The dispatch calling party may respond to the pre-recorded message with a voice message that is recorded by the multi-camp mobile communication device ().

Method of operating a multi-camp mobile communication device while engaged in a call and receiving a dispatch call

Access noise in a spread spectrum communication system () is reduced by broadcasting a resource indicator message () from a base station () and is received by mobile stations () in the serving area () of the base station. The resource indicator message indicates which resources are supported () by the base station, as well as their present availability (). If a desired resource is not presently available (), mobile stations will avoid requesting access to that resource (). When the resource becomes available, access noise can be controlled by having mobile stations wait a randomly selected period of time ().

Method for reducing access noise in a spread spectrum communication system

A multiprocessor system () for sharing memory has a memory (), and two or more processors (). The processors are programmed to establish () memory buffer pools between the processors, and for each memory buffer pool, establish () an array of buffer pointers that point to corresponding memory buffers. The processors are further programmed to, for each array of buffer pointers, establish () a consumption pointer for the processor owning the memory buffer pool, and a release pointer for another processor sharing said memory buffer pool, each pointer initially pointing to a predetermined location of the array, and adjust (-) the consumption and release pointers according to buffers consumed and released.

Method and apparatus using buffer pools and arrays of buffer pointers for sharing memory in a multiprocessor system

An InterProcessor Communication (IPC) Protocol network () includes at least one IPC client () and an IPC server (). The IPC protocol allows for the IPC client () to register with the IPC server () which will provide the means for the two to communicate freely without any limitations on what software architectures, operating systems, hardware, etc. each depend on. The IPC protocol in one embodiment of the invention provides for dynamic IPC node configuration in a server based IPC communication management framework.

An IPC protocol/network allows for intelligent targeting of nodes in order to reduce overhead and provide for improved power management. The IPC server keeps track of the IPC network's node activity and using an operational state table () it can determine which node can handle a service request (e.g., MP3 decode). By keeping track of the current operational condition of the nodes within the network, the processors can have better battery life and application latency can be improved. The IPC server will keep track not only of which nodes can handle which services, but it will also know which node can handle the service request given its knowledge of the operational state of each of the nodes.

Interprocessor communication protocol providing intelligent targeting of nodes

The invention concerns a method () for tracking sequence numbers. The method includes the steps of detecting () an error in a first set of data (), determining () a range () of possible sequence numbers () for a second set of data () and using the range of possible sequence numbers, producing () a block code () for the second set of data in which the block code is used to verify that one of the range of possible sequence numbers is a correct sequence number for the second set of data.

Method and system for tracking sequence numbers

A first transceiver () sends () a predetermined number of blocks of data to a second transceiver, and records () on which of a plurality of sub-carriers each of the blocks of data is sent. The first transceiver receives () from the second transceiver a list of the blocks of data that were received with errors, and calculates () from the list a plurality of error rates corresponding to the plurality of sub-carriers. The first transceiver then determines () the SQE for each of the plurality of sub-carriers from the plurality of error rates, and adjusts () the data rate in accordance with the SQE determined for each of the plurality of sub-carriers. These processes can be implemented as a method that is facilitated by a software program.

Method and apparatus for maximizing a data rate of a wireless data communication system

Systems (or) and methods (or) are provided for selecting a post-compression waveform from a post-compression waveform table () and supplying it to a synthesis engine (). The post-compression waveform is based upon a set of post-compression coefficients determined by generating a frequency-domain representation of a periodic signal, the representation including at least one pre-compression frequency-domain sample (), and performing a threshold-based compression of the pre-compression frequency-domain samples. Systems and methods also include indexing and storing () post-compression coefficients in a post-compression coefficient table (), generating () a post-compression waveform based upon the set of post-compression coefficients, and placing () the post-compression waveform in the table prior to the selecting (). The system and method also include performing () a read-ahead operation on a sound file before selecting the post-compression waveform, the read-ahead operation indicating the post-compression waveform to be selected and supplied to the synthesis engine.

System and methods for memory-constrained sound synthesis using harmonic coding

A multi-mode mobile communication device capable of communicating with more than one mobile communication system simultaneously has a timer () for arbitrating between transmit events of two communication systems. The mobile communication device assigns a priority to each of the two communication systems, and when a transmit event conflict arises, it is resolved in favor of the system having the higher priority. The timer includes a delta timer () for timing the duration of transmit events. If the mobile communication device is engaged in a transmit event in one system, and a transmit event arises in the second system, the mobile communication device checks the delta timer. If the timer is not zeroed, the mobile communication device then checks priority of the events, and transmits whichever event has priority.

Method and apparatus for arbitrating transmit events in a multimode communication device

A method of scaling polyphony can include identifying music data to be played (), wherein the music data indicates instruments to be used and each instrument has an assigned priority. A measure of polyphony needed to play the music data can be compared with polyphony of a sound generating device (). If the measure of polyphony exceeds the polyphony of the sound generating device, the music data can be played without using one or more instruments indicated by the music data according to the assigned priorities ().

MIDI scalable polyphony based on instrument priority and sound quality

In time divisioned, multi-frequency communication air interfaces it is common for a control channel to be defined on a first frequency while traffic channels are carried on other frequencies. A mobile communication device maintains the automatic gain control (AGC) settings for a first frequency while engaged on a second frequency by adjusting the AGC of the first frequency to correspond with changes in the AGC setting for the second frequency before attempting to access the first frequency again. Since, in the communication system, the two signals are transmitted from the same point, the changes in signal level will typically be similar enough that the mobile communication device will not have to perform a new AGC determination when switching back to the first frequency.

Method for maintaining automatic gain control settings for a multi-frequency communication device

The invention relates to a system and method for use in wireless packet data mode communications for facilitating communications between one or more remote devices and a base target device. The invention provides a high priority access channel () that can be utilized by specifically enabled packet data capable remote units (), to perform random access channel request from a base station () when there is overloading on the standard communication channel ().

Dedicated high priority access channel

A system, method and computer readable medium are provided for segmenting a cache that is shared by multiple processors. According to the method, a first segment of the cache is allocated to a first processor and a second segment of the cache is allocated to a second processor. An execution time of at least one task on the first processor is monitored. If the execution time of the at least one task is greater than an allowed execution time minus a predetermined margin, the size of the first segment of the cache that is allocated to the first processor is increased. In one preferred method, if the execution time of the at least one task is significantly less than the allowed execution time minus the predetermined margin, the size of the first segment of the cache that is allocated to the first processor is decreased.

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Miami, FL, United States of America

Jean Khawand