| Patent application number | Description | Published |
|---|
| 20090113059 | METHOD AND APPARATUS FOR PEER TO PEER LINK ESTABLISHMENT OVER A NETWORK - A method and apparatus for linking to a Peer-to-Peer (“P2P”) network for VOIP communications. An intermediary peer creates a map to link peers together in the P2P network. A series of messages are generated to open the ports of one peer to be accessible to other peers on the P2P network. Peers are then enabled to communicate directly with other peers. Steward peers can assume the functionality of the intermediary peer. | 04-30-2009 |
| 20090303923 | SYSTEM AND METHOD FOR INTERRUPTING A TRANSMITTING DEVICE IN A COMMUNICATION SYSTEM - A system and method for interrupting a transmitting device during a call. In the system, calls are transmitted from a first device on a communication channel as a series of channel frames. At predetermined times during the transmission, the transmitting device is configured to drop channel frames, resulting in open channel frame periods where the transmitting device is not transmitting on the communication channel. During these open channel frame periods, the transmitting device is also configured to switch to a receiving mode. Other devices in the system are capable of switching into a transmitting mode during the open channel frame periods and, when applicable, sending an interrupt request on the communication channel to the transmitting device in order to request access to the channel. | 12-10-2009 |
| 20100085952 | Method of Communicating which Channel is to be Monitored by Subscriber Units that are Idle in a Communication System - The present invention discloses, in a two-way radio frequency (RF) communications system having at least one repeater, a plurality of channels, and a plurality of subscriber units, a repeater receives a message that identifies a channel that is selected to serve as a rest channel for the system. The channel that is currently serving as the rest channel for the system is monitored by subscriber units that are idle in the system. If the repeater determines that the channel selected to serve as the rest channel is hosted by the repeater, the repeater periodically transmits an identity of the channel as the channel currently serving as the rest channel on at least the channel. | 04-08-2010 |
| 20100086092 | Method of Efficiently Synchronizing to a Desired Timeslot in a Time Division Multiple Access Communication System - The time required for the receiving device to synchronize to a desired timeslot is reduced. In operation, a transmitting device selects a synchronization pattern associated with the desired timeslot that is at least mutually exclusive from synchronization patterns associated with other timeslots on the same frequency in the system. Once selected, the transmitting device transmits a burst embedding the synchronization pattern that was selected, where appropriate. If the receiving device detects the synchronization pattern, it immediately synchronizes with the timeslot with confidence that it is synchronizing to the desired timeslot. Using synchronization pattern associated with the desired timeslot that is at least mutually exclusive from synchronization patterns associated with the other timeslots on the same frequency also improves spectral efficiency in direct-mode transmissions, thus allowing more than one subscriber unit to simultaneously transmit in direct mode on a frequency without interfering with other transmissions on the frequency. | 04-08-2010 |
| 20100087199 | METHOD FOR TRUNKING RADIO FREQUENCY RESOURCES - A subscriber unit monitors a first channel currently serving as a rest channel for the system, wherein the channel currently serving as the rest channel for the system is monitored by subscribers that are idle in the system. The subscriber unit determines that a first call is being initiated on the first channel. If the first call is not of interest, the subscriber unit ceases to monitor the first channel, and monitors a second channel that will serve as the rest channel for the system when the first call starts on the first channel. If the first call is of interest, the subscriber unit participates in the first call on the first channel, and before or after the first call ends, participates in a second call on a third channel or monitors a channel currently serving as the rest channel for the system when the subscriber unit becomes idle. | 04-08-2010 |
| 20100279726 | METHOD FOR INITIATING A COMMUNICATION WHILE PARTICIPATING IN ANOTHER COMMUNICATION - Within a two way radio frequency communication system, a repeater transmits an identity of a rest channel when transmitting during an active communication call on a channel other than the rest channel. A subscriber unit communicating within the active communication, receives the identity of the rest channel, leaves the active communication; and initiates a new communication on the rest channel. | 11-04-2010 |
| 20110028084 | SYSTEM AND METHOD FOR INTERRUPTING COMMUNICATIONS WITHIN A COMMUNICATION SYSTEM - A method for interrupting active communications within a communication network, the method comprising in one embodiment: operating a communication device to terminate communication activity in response to receiving an interrupt request from an interrupting device; operating a repeater to wake up and initiate message communication activity in response to receiving a base station downlink activation message from the interrupting device; and operating the interrupting device to transmit one or more messages on a receive frequency of the repeater. The method for interrupting active communications within a communication network comprising in an alternate embodiment: operating a repeater, in response to receiving an interrupt request from an interrupting device, to clear each channel hosted by the repeater: informing the interrupting device by the repeater that all channels have been cleared; de-keying the repeater; operating the interrupting device to transmit one or more communications on a transmission frequency of the repeater. | 02-03-2011 |
| 20110117835 | METHOD FOR INTERRUPTING VOICE TRANSMISSIONS WITHIN A MULTI SITE COMMUNICATION SYSTEM - A method for interrupting voice transmissions within a multi site communication system includes operating a repeater to engage in an interruptible voice communication; to identify an open burst location based on a repeat delay when the interruptible voice communication is sourced directly via a wireless network, and to identify the open burst location as irrelevant when the interruptible voice communication is indirectly sourced via a wireless network; and repeat the interruptible voice communication including the open burst location. | 05-19-2011 |
| 20110143797 | METHOD FOR FACILITATING TRANSMISSION OF DATA IN A COMMUNICATION SYSTEM - A method for facilitating transmission of data in a communication system is provided herein. In operation, a base radio of a plurality of base radios combines status information corresponding to a plurality of inbound frequencies and transmits the combined status information on a single outbound radio frequency. Further, each of the plurality of inbound radio frequencies corresponds to one of the plurality of base radios. Then, one or more radio terminals monitor the single outbound radio frequency to receive the combined status information, determine at least one available inbound radio frequency from the plurality of inbound radio frequencies based on the received combined status information, selects an inbound radio frequency of the at least one available inbound frequency, and transmitting the data using the selected inbound radio frequency to the corresponding base radio. | 06-16-2011 |
