A wireless electronic-ink based display device for use in indoor and outdoor environments characterized by low and/or dynamic ambient lighting conditions. The wireless electronic-ink based display device has an ambient light level sensor for sensing ambient lighting conditions about the wireless electronic-ink based display device, and generating a drive control signal in response to sensed ambient lighting conditions. The wireless electronic-ink based display device also has an edge-lit LED-based illumination module, responsive to the drive control signal generated by the ambient light level sensor, for illuminating the display surface of its addressable electronic-ink display module during low-illumination ambient lighting conditions detected by the ambient light level sensor, under the control of a processor. In the illustrative embodiment, the processor runs a firmware routine which analyzes detected ambient light conditions made by the ambient light level sensor, and automatically generates the drive control signal provided to the edge-lit LED illumination module.

Edge-lit electronic-ink display device for use in indoor and outdoor environments

A wireless electronic-ink based display device employing thermal packaging for cold outdoor-weather applications, comprising a power source module, a processor, a RF transceiver, and a power management module mounted on the first side of a printed circuit board (PCB) structure, while an addressable electronic-ink based display module is mounted on the second side of the PCB structure, and a thermal-insulation weather-sealed packaging is provided about the addressable electronic-ink based display structure and the PCB structure. To accommodate hot outdoor weather environments, a heat-dissipative thermal radiator is mounted to the first side of the PCB, and in thermal communication with the addressable electronic-ink based display structure and the PCB structure.

Electronic-ink signage device employing thermal packaging for outdoor weather applications

A Service Level Management system is provided. A notification of a service level problem within a combination packet-switching and circuit-switching hybrid network is received by the system. The service level agreement is retrieved and the problem is checked against the agreement to determine if the agreement has been met. The notification of the problem is prioritized with a second notification of a second service level problem based on a number of times the agreement has not been met. Next, a resolution for the service level problem within the hybrid network is determined. The resolution may include a status report, resolution notification, problem reports, service reconfiguration, trouble notification, service level agreement violations, and/or outage notification. The progress of the implementation of the resolution is tracked. Finally, the hybrid network is managed based on the future predicted behavior of the network.

Service level management in a hybrid network architecture

Method and apparatus for facilitating inter-cell connections, such as during a forward handover or radio link failure (RLF), are disclosed. A user terminal such as a UE may store identity information associated with a source cell, and use this information in accessing target or other cells subsequent to radio link failure so as to facilitate access to context information of the user terminal. A base station may be configured to improve handover performance by associating context information with a newly assigned terminal identity. Handover performance may be enhanced by facilitating connection processing in the event of inability to retrieve user terminal context from a source cell.

Methods and apparatus for facilitating robust forward handover in long term evolution (lte) communication systems

A distributed antenna system comprises a base transceiver station, a plurality of distributed antenna units and a signal routing apparatus. The base transceiver station has a plurality of output ports that generate a plurality of downlink signals having overlapping transmit frequencies and containing different communication content. The different communication content is directed toward each of a plurality of mobile units. The base transceiver station also has at least one uplink receive port that receives an uplink signal. The uplink signal includes communication content received from at least one of the mobile units. The plurality of distributed antenna units have coverage areas that are non-overlapping or only partially overlapping. The signal routing apparatus routes the downlink signals to the plurality of distributed antennas such that each of the plurality of downlink signals are transmitted by one or more of the distributed antennas and each distributed antenna only transmits one of the downlink signals.

Distributed antenna communications system

The invention provides for path optimization for routing of a communication session in a network having a plurality of core networks (110) coupled to a plurality of access networks (120). Both a core network and an access network perform the path optimization by determining a plurality of possible paths to a plurality of target access points to form a target matrix, determining a corresponding route preference factor for each possible path of the target matrix, and selecting, from the target matrix, a possible path having an optimal route preference factor. An overall or complete path, for routing of the communication session, is then determined either by combining the selected possible paths, or by selecting one possible path as a complete path. The route preference factor, for each possible path, is determined based upon various routing variables, such as quality of service, bandwidth for the communication session, route complexity, interconnect cost, routing cost; resource loading, resource availability, and operator preference for traffic biasing.

Segmented and distributed path optimization in a communication network

A base station system (BSS) encompasses a base station controller (BSC), ATM transcoder (AXC), and one or more Base Tranceiver Subsystems (BTS). The AXC provides for the coupling of external mobile subscriber subsystems (MS) and a public switched telephone network (PSTN). The BSC provides for communication with and control of the ATM transcoder hub subsystem. In one embodiment, the ATM transcoder subsystem provides a first set of signals to the BSC subsystem to signal the base station controller as to call flow management data. The BSC is responsive to the first set of signals from the ATM transcoder hub to generate a second set of signals coupled back to the ATM transcoder hub. This second set of signals provides for the control of transcoding and conversion necessary to communicate between a wireless air communications format data and a call management protocol format data utilized in communication to the public switch telephone network. In one embodiment, the communication between the PSTN and the AXC is in an ATM format and in an alternate embodiment a synchronous format is used. The BSC provides control and sequencing of all call control operations. Control is preferably near real-time. In one embodiment, call control operations comprise call setup, breakdown, and hand-off among the ATM transcoder hub (AXC), the Base Transceiver Subsystem (BTS), and the PSTN via a Mobile Switching Center (MSC).

System packet-based centralized base station controller

A network interface (NI) system provides for communicating encoded digital data between a connection-based network and a plurality of cellular communications networks. Each of the cellular communications networks is comprised of a plurality of cell sites that communicate with a plurality of mobile units via radio signals. The cell sites provide for converting data received in said radio signals (e.g., embedded data) into electronic digital data signals and converting the electronic data signals into radio signals. The connection-based network has a plurality of delivery points which function to translate from the electronic data into a form used by said connection-based network and from the form used by said connection-based network into the electronic data. The network interface system is comprised of a base transceiver subsystem (BTS), a base station controller (BSC), a Base Station Transceiver Subsystem Interface (BTSI), a transcoder (XC), an operations maintenance and control subsystem (OMC), and an ATM switch providing for communications of the electronic data as packetized ATM cells between the BTSI, NI, XC, and the BSC. The BTSI is coupled to each of the cell sites and to the ATM switch. The BTSI provides for packetizing the electronic data as ATM cells for transmission by the ATM switch, for transmitting and receiving the packetized ATM cells communications with said ATM switch, and for depacketizing the electronic data responsive to the received ATM cells from the ATM switch.

Network interface subsystem for use in an ATM communications system

An ATM hub transcoder system (AXC) is coupled to a base station controller (BSC), a mobile switching center (MSC), and a base transceiver subsystem (BTS). In one embodiment, the transcoder system is comprised of an ATM switch subsystem, a transcoder subsystem (XC), a base transceiver subsystem interface (BTSI), and a mobile switching center network interface subsystem (MSC-NI). The ATM switch provides coupling and communication of data in an internal ATM format between each of the XC, BTSI, MSC-NI, and BSC, responsive to control signals from the BSC. The MSC-NI provides for conversion of the format of the data between the internal ATM format and a synchronous format. In one embodiment, the synchronous format is used for communication between the MSC and the NI, responsive to the MSC and the BSC, and the BTSI provides for communicating mobile subsystem information between the BTS and the XC, responsive to the BTS and the BSC. In one embodiment, the interface between the ATM switch and the MSC-NI is PCM encoded in the internal ATM format data. The In an alternate embodiment, the interface between the ATM switch and the BTSI is of digitally encoded voice data in the internal ATM format. The MSC-NI couples the data originating from the MSC via the ATM switch to the transcoder subsystem (XC).

Transcoder for use in an ATM-based communications system

A wireless communication system (100) includes a plurality of base station controllers (BSCs) (114, 116) logically sharing a plurality of base transceiver stations (BTSs) (124, 126) and which may physically share antenna and related transceiver equipment. The system (100) is configured to enhance system capacity while reducing the occurrence of seams (28) between service areas in the system (100).

Pedziwiatr Joseph M

Papers

Segmented and distributed path optimization in a communication network

System packet-based centralized base station controller

Network interface subsystem for use in an ATM communications system

Transcoder for use in an ATM-based communications system

Scalable wireless communication network and method