摘要:
A system for time division duplex communication over a single frequency band wherein guard time overhead is reduced by active adjustment of reverse link transmission timing as a function of round trip propagation delay. Responding to a polling message from the base station, a user station seeking to establish communication transmits a reply message. The base station using a propagation delay calculator (812) calculates the distance of the user station by measuring the propagation delay with respect to receipt of the reply message and a timing control unit (806) and transmitter (807) for sending a timing adjustment command to the user station instructing it to advance or retard its timing. Thereafter, the base station monitors the user station transmissions and periodically commands it to adjust its timing in a like manner. The user station transmits a control preamble at the start of each time slot to allow the base station to perform round trip timing calculations and adjustment of the user station's power or antenna selection.
摘要:
A communications system (10) is provided which comprises a plurality of network hubs (12, 14 and 16). Network hubs (12, 14 and 16) are interconnected through a communications network (18). The system (10) interconnects messaging systems (24, 26, 28, 30, 32, 34, 36, 40, 42 and 44) having disparate capabilities and using disparate communications protocols. The network hubs use numbers of connection processors (52 and 54) to interact with the messaging systems. A hub database (68) and message store (58) are used to store control information and messaging information within the network hubs. A network processor (60) is used to interact with other hubs within the communications system (10). A message router (72), connection manager (74), data replicator (76), and an administrative event manager (78) are used to control the operations of the hub in processing a message.
摘要:
The invention is a system for interfacing (200) a GR-303 system (220, 222) with a broadband system (BROADBAND NETWORK). The broadband system can be an ATM system. The invention can process (360) the GR-303 signaling to select ATM connections and then interwork the GR-303 connections with the selected ATM connections. The invention can interwork (362) GR-303 signaling and SS7 signaling. The invention can also process SS7 signaling to select GR-303 connections and then interwork ATM connections with the selected GR-303 connections.
摘要:
A system and method provide enhanced services for a call that is transported from a communication device (106) through an asynchronous transfer mode system. The call has user communications (124) in asynchronous transfer mode cells and call signaling (116). A signaling processor (110) receives the call signaling and processes the call signaling to determine a connection to a service platform (112). The signaling processor transports a processor control message (120) designating the selected connection. An asynchronous transfer mode interworking unit (114) receives the user communication from the communication device and the processor control message from the signaling processor. The asynchronous transfer mode interworking unit converts the user communications from the asynchronous transfer mode cells to a format compatible with the service platform and dynamically transports the user communications to the service platform in real time. The service platform processes the user communications.
摘要:
An ATM transport system (105, 110, 115) transports user information from a continuous signal transport system (100). The ATM transport system (105, 110, 115) uses telecommunications signaling associated with the continuous signals to determine if the continuous signals are transporting any user information. If so, ATM cells containing user information are generated and transmitted. An ATM interworking multiplexer (105) and a processor (110) are included in the system.
摘要:
A system (100) for providing virtual connections through an ATM interworking multiplexer (130, 140) on a call-by-call basis. A signaling processor (160) receives signaling for a call and selects the virtual connection for the call. The signaling processor (160) generates new signaling that identifies the selection and transfers the new signaling to the ATM interworking multiplexer (130, 140) that accepted the access connection for the call. The multiplexer (130, 140) converts user information from the access connection into ATM cells for transmission over the virtual connection in accord with the new signaling.
摘要:
A Broadband Intelligent Network employs an ATM fast-packet (51) switch to route signaling cells from a calling party (52) to a switch port (53) directly connected to a network controller (64). The signaling cells carry a service request for download of a program module or data from a network resource unit (63) to the calling party, or for download of a program module or data from the calling party apparatus to a network host resource unit, or for service circuit service to the calling party or in a connection path between the calling party and a called party, or for a message broadcast. The network controller (64) responds to the information in the signaling cells and establishes the necessary switched virtual connections in the ATM switch (51) to provide the requested services. A service creation program (31) may be downloaded to the customer from the network (61), und used by the customer to create a new service script which is subsequently downloaded to the network for execution.
摘要:
L'invention concerne un procédé de marquage d'une liaison MIC (12) entre deux noeuds (10, 11) d'un réseau, ladite liaison MIC (12) étant du type présentant une structure de trame à N intervalles de temps. Selon l'invention, le procédé consiste à faire véhiculer par ladite liaison MIC (12) une première information d'identification permettant auxdits noeuds (10, 11) de l'identifier de façon commune. L'invention concerne également une liaison MIC, un intervalle de temps entre deux noeuds d'un réseau, des procédés d'identification commune d'un intervalle de temps et d'une liaison MIC par deux noeuds.