Aspects of the subject disclosure may include, for example, receiving, by a feed point of a dielectric antenna, electromagnetic waves from a dielectric core coupled to the feed point without an electrical return path, where at least a portion of the dielectric antenna comprises a conductive surface, directing, by the feed point, the electromagnetic waves to a proximal portion of the dielectric antenna, and radiating, via an aperture of the dielectric antenna, a wireless signal responsive to the electromagnetic waves being received at the aperture. Other embodiments are disclosed.

Method and apparatus for coupling an antenna to a device

A distributed antenna and backhaul system provide network connectivity for a small cell deployment. Rather than building new structures, and installing additional fiber and cable, embodiments described herein disclose using high-bandwidth, millimeter-wave communications and existing power line infrastructure. Above ground backhaul connections via power lines and line-of-sight millimeter-wave band signals as well as underground backhaul connections via buried electrical conduits can provide connectivity to the distributed base stations. An overhead millimeter-wave system can also be used to provide backhaul connectivity. Modules can be placed onto existing infrastructure, such as streetlights and utility poles, and the modules can contain base stations and antennas to transmit the millimeter-waves to and from other modules.

Backhaul link for distributed antenna system

A distributed antenna system is provided that frequency shifts the output of one or more microcells to a 60 GHz or higher frequency range for transmission to a set of distributed antennas. The cellular band outputs of these microcell base station devices are used to modulate a 60 GHz (or higher) carrier wave, yielding a group of subcarriers on the 60 GHz carrier wave. This group will then be transmitted in the air via analog microwave RF unit, after which it can be repeated or radiated to the surrounding area. The repeaters amplify the signal and resend it on the air again toward the next repeater. In places where a microcell is required, the 60 GHz signal is shifted in frequency back to its original frequency (e.g., the 1.9 GHz cellular band) and radiated locally to nearby mobile devices.

Remote distributed antenna system

Aspects of the subject disclosure may include, for example, a device that facilitates transmitting electromagnetic waves along a surface of a wire that facilitates delivery of electric energy to devices, and sensing a condition that is adverse to the electromagnetic waves propagating along the surface of the wire. Other embodiments are disclosed.

Method and apparatus for sensing a condition in a transmission medium of electromagnetic waves

Aspects of the subject disclosure may include, for example, a system for detecting a fault in a first wire of a power grid that affects a transmission or reception of electromagnetic waves that transport data and that propagate along a surface of the first wire, selecting a backup communication medium from one or more backup communication mediums according to one or more selection criteria, and redirecting the data to the backup communication medium to circumvent the fault. Other embodiments are disclosed.

Method and apparatus that provides fault tolerance in a communication network

It is an object to provide an authentication relay apparatus, authentication relay system, and authentication relay method which enables registration of a slave apparatus to a network, even when communication ranges between a master apparatus and a slave apparatus to be registered are restricted and both or one of the registration messages is not reached. A representative registration apparatus 100 includes: a master and slave apparatus supporting control section 101 which generates, according to a registration message received from a master apparatus or a slave apparatus, a registration message to be transmitted to the master apparatus or the slave apparatus; a communication range switching section 104 for switching a transmission range of a message to be transmitted; and a communication range determining section 107 which determines, according to a destination of a registration message generated by the master and slave apparatus supporting control section 101, a transmission range of the registration message thus generated, so as to provide instructions to the communication range switching section 104.

Authentication relay apparatus, authentication relay system, integrated circuit, and authentication relay method

PROBLEM TO BE SOLVED: To provide an authentication repeating apparatus, an authentication repeating system, and an authentication repeating method in which a slave unit can be registered on a network even in the case that a communication range between a master unit and the slave unit to be registered is limited and both or one of registration messages is not delivered. SOLUTION: A proxy registration device 100 comprises a master/slave unit corresponding control section 101 for creating a registration message to a master unit or a slave unit in response to a registration message received from the master unit or the slave unit, a communication range switching section 104 for switching a transmission range of the message to be transmitted, and a communication range determination section 107 which determines the transmission range of the created registration message according to a destination of the registration message created by the master/slave unit corresponding control section 101 and instructs the determined transmission range to the communication range switching section 104. COPYRIGHT: (C)2008,JPO&INPIT

Hector Matsushita Electric Industrial Co. Ltd. Akamine

Papers

Authentication relay apparatus, authentication relay system, integrated circuit, and authentication relay method

Authentication repeating apparatus, authentication repeating system and authentication repeating method