Motorola Solutions

About: Motorola Solutions is a company organization based out in Seoul, South Korea. It is known for research contribution in the topics: Signal & Communications system. The organization has 2162 authors who have published 2299 publications receiving 25450 citations. The organization is also known as: Motorola Solutions, Inc. & Motorola.

Asset seal device and method

Abstract: A device and method of sealing a container comprises a mechanical bolt (201') with a circuit disposed thereon. The circuit includes RFID function. When a captivating device (203) is joined with one end of the bolt (201') the RFID circuit changes state and operates to transmit symbolic data. When the bolt is severed or cut off the RFID circuit again changes state and operates to transmit other symbolic data.

Methods and apparatus for controlling congestion in a communication network

Abstract: A subscriber unit: sends (202) a media flow to a correspondent host; receives (204), from the correspondent host, an indication of a level of congestion in the communication network; compares (206) the level of congestion to a congestion threshold (TH1) during a first time interval, wherein TH1 is determined based on an assigned priority level for the media flow, and terminates (212) the media flow and enters a sleep mode state when, after expiration of the first time interval, the level of congestion exceeds TH1; while in the sleep mode state, the subscriber unit compares (214) a level of congestion in the communication network to a congestion threshold (TH2), and exits (216) the sleep mode state and resumes the media flow when the level of congestion remains below TH2 for the duration of a second time interval.

Method for rapid charge control in lithium batteries

Abstract: This invention includes a method for charging lithium-based batteries. Battery type is identified by a charger by way of a third terminal. For nickel-based cells, the third terminal is coupled to a thermistor for sensing temperature. For lithium-based cells, the third terminal is coupled to the rechargeable cell disposed within the battery pack. If a nickel cell is identified, the cell is charged by conventional means. If a lithium cell is identified, the charger applies a full current until any serial elements disposed between the battery pack terminals and the cell reach a high impedance state. The charger then reduces the charging current to a low level for a predetermined time. After this time has elapsed, the charger then reapplies a high current. If the voltage across the serial elements remains low, charging continues. However, if the voltage across the serial elements exceeds a predetermined threshold, the charger then decrements the current by a predetermined amount.

Method for acknowledging messages in a communication system

Abstract: At a first device (102 or 104), a message is received and processed. If the message is processed during a first time period, the first device transmits an acknowledgement message during a second time period; otherwise the first device transmits the acknowledgment message during a third time period. The second time period and the third time period are exclusive of each other.

Method and apparatus for channel selection in a wireless communication system

Abstract: A node in a wireless communication system announces a channel switch operation to facilitate a smooth transition to other channel. The node detects a requirement to discontinue communications at a first channel and sends a message to a plurality of neighboring nodes in response to detecting the requirement. Generally, the message comprises at least a reason for discontinuation of communications at the first channel and a duration for the channel switch operation after which the node is available for communications at the first channel or an alternate channel. Each of the plurality of neighboring nodes can determine based on the message and the neighborhood conditions a requirement to scan alternate channels to initiate communications with other nodes.