Patent application number | Description | Published |
20090003210 | SYSTEM AND METHOD FOR MONITORING CONGESTION IN COMMUNICATION SYSTEMS - A system and method for monitoring congestion in a communication system including an external packet switched network. The communication system includes a plurality of interconnected host devices, such as base stations, consoles, zone controllers. To determine the presence of congestion on links between a pair of host devices, a series of sequential packets are transmitted between the pair. The sequentially transmitted packets are then monitor fluctuations in transmission delays and lost packets. These two criteria are used to identify congestion levels present on the various links in the communication system, and communications on the relevant interzone link are controlled based on the identified congestion level. | 01-01-2009 |
20100062798 | METHOD OF ASSIGNING PROVISIONAL IDENTIFICATION TO A SUBSCRIBER UNIT AND GROUP - The present disclosure provides an efficient and effective method for allocating provisional PUIDs and PGIDs to subscriber units and groups during a failure, such that when the communication system recovers, there is a decrease in or elimination of the number of dropped or missed communications. The present disclosure reserves a range of provisional PUIDs and PGIDs for resource controllers operating in a region of system failure to assign when subscriber units roam into the region of failure in the communication system. The present disclosure addresses creating PUID and PGID ranges for resource controllers to assign to roaming subscriber units in order to allow for assignment of PUIDs and PGIDs during periods of subsystem isolation and site trunking, i.e., when the particular site or subsystem cannot communicate with the rest of the communication system. The present disclosure also addresses recovering from these situations, re-registration, and reallocation of PUIDs and PGIDs. | 03-11-2010 |
20100330973 | METHOD AND DEVICE FOR PROGRAMMING INTER-(SUB) SYSTEM INTERFACE IDENTITY DATA AT A UNIT OR INDIVIDUAL SUBSCRIBER - A method and device enables programming inter-subsystem interface (ISSI) identity data, which identifies at least one of units or groups operating in a communication network, into at least one unit associated with a first radio frequency subsystem. The method includes receiving the ISSI identity data at the first radio frequency subsystem from an ISSI communication node, wherein the ISSI identity data identifies at least one of unit information or group information associated with a second radio frequency subsystem operating in the communication network. At least a portion of the ISSI identity data is then programmed into the at least one unit associated with the first radio frequency subsystem. | 12-30-2010 |
20110151917 | METHOD AND APPARATUS FOR BRIDGING CALLS BETWEEN TWO DISPARATE PUSH-TO-TALK SYSTEMS - A PTT bridging gateway between a first PTT system and a second disparate PTT system: receives an invitation to a first client to join a first group call for a first group comprising multiple member clients on the first PTT system, wherein the first client is one of the member clients of the first group; determines that the first client is mapped to a second group comprising multiple member clients on the second PTT system; and initiates a second group call to the multiple member clients on the second PTT system. | 06-23-2011 |
20110250922 | METHOD AND DEVICE FOR ESTABLISHING AN INTER-RADIO FREQUENCY SUBSYSTEM INTERFACE (ISSI) GROUP CALL - A hosted inter-radio frequency subsystem interface (HIF) maintains a list of affiliated radio frequency subsystems (RFSSs), the list identifies at least one serving RFSS. An affiliation request is transmitted from the HIF to the home RFSS, which is a home RFSS of the group. The HIF receives from the serving RFSS a request to initiate an inter-RFSS group call to the group using HIF addressing. The HIF transmits a request to the home RFSS to initiate the inter-RFSS group call using serving RFSS addressing. A data packet from the home RFSS or the serving RFSS is received at the HIF. Upon receipt, the HIF transmits a copy of the data packet to the serving RFSS if the data packet was received from the home RFSS; otherwise, the HIF transmits a copy of the data packet to the home RFSS if the data packet was received from the serving RFSS. | 10-13-2011 |
20110250923 | METHOD AND DEVICE FOR ESTABLISHING AN INTER-RADIO FREQUENCY SUBSYSTEM INTERFACE (ISSI) UNIT-TO-UNIT CALL - A method and device enable establishing an inter-radio frequency subsystem interface (ISSI) unit-to-unit call between a calling unit of a calling home radio frequency subsystem (RFSS), and a called unit of a called home RFSS, through a hosted ISSI function (HIF). The method includes processing, at the HIF, a first invite message received from the calling home RFSS, wherein the first invite message includes a first request uniform resource identifier (URI) that designates an alias system unit identification (SU-ID). In response to the first invite message, transmitting, from the HIF to the called home RFSS, a second invite message, including a second request URI that designates a real SU-ID, wherein the HIF acts as the calling home RFSS. The unit-to-unit call is thus established between the calling unit and the called unit through the calling home RFSS, the HIF, and the called home RFSS. | 10-13-2011 |
20120115494 | METHOD AND SYSTEM FOR FORMING AN ACTIONABLE COMMUNICATION RESOURCE - An actionable communication resource forming function performs a method for forming an actionable communication resource in a communication system. The method includes receiving, from a resource management system, a plurality of resource identifiers that identify a plurality of resources, wherein each resource is associated with a communication device addressable by a communication system using a communication device identifier; for each resource identifier, determining the communication device identifier for the associated communication device; for each communication device identifier, identifying a communication group to which the corresponding communication device is affiliated, and using the identified communication groups to determine a set of communication groups, wherein each communication group in the set is addressable by the communication system, wherein an actionable communication resource is formed from the set of communication groups to facilitate communications with the communication devices over the communication system using the addressable communication groups. | 05-10-2012 |
20130122900 | ACCESS CONTROL FOR ROAMING RADIO DEVICES - Methods and systems are provided for supporting roaming wireless devices and roaming wireless groups with access controls. One exemplary method involves obtaining a set of permissions associated with a roaming device from its home radio system, obtaining a set of permissions for the roaming device from the visited radio system, merging the obtained sets of permissions, and responding to a request from the roaming device in accordance with the merged set of permissions for the roaming device within the visited radio system. Another exemplary method involves obtaining permissions associated with a roaming radio group from its home radio system, obtaining permissions for the roaming radio group from the visited radio system, merging the obtained permissions, and responding to a group service request for the roaming radio group in accordance with the merged set of permissions for the roaming radio group within the visited radio system. | 05-16-2013 |
20130337805 | ACCESS CONTROL FOR ROAMING RADIO DEVICES - Methods and systems are provided for supporting roaming wireless devices and roaming wireless groups with access controls. One exemplary method involves obtaining a set of permissions associated with a roaming device from its home radio system, obtaining a set of permissions for the roaming device from the visited radio system, merging the obtained sets of permissions, and responding to a request from the roaming device in accordance with the merged set of permissions for the roaming device within the visited radio system. Another exemplary method involves obtaining permissions associated with a roaming radio group from its home radio system, obtaining permissions for the roaming radio group from the visited radio system, merging the obtained permissions, and responding to a group service request for the roaming radio group in accordance with the merged set of permissions for the roaming radio group within the visited radio system. | 12-19-2013 |