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1221 results about "Radio unit" patented technology

Apparatus and method for locating objects in a three-dimensional space

A system for locating of objects in a three-dimensional space comprises: (a) an impulse radio network including at least three reference impulse radio units and at least one mobile position indicating apparatus; position information relating the impulse radio units is recorded by at least one indicating impulse radio unit; the impulse radio units are in communication; and (b) an affixing structure for affixing a respective mobile position indicating apparatus with a respective object. A respective mobile position indicating apparatus transmits an impulse radio identifying signal that is received by a receiving impulse radio unit. An indicating impulse radio unit cooperates with the receiving impulse radio unit in using the identifying signal for developing coordinate information for locating the respective mobile position indicating apparatus. The method comprises the steps of: (a) providing an impulse radio network including at least three reference impulse radio units and at least one mobile position indicating apparatus; position information relating the impulse radio units is recorded by at least one indicating impulse radio unit; the impulse radio units are in communication; (b) providing an affixing structure for affixing a respective mobile position indicating apparatus with a respective object; (c) transmitting an impulse radio identifying signal from a respective mobile position indicating apparatus; (d) Receiving the identifying signal by a receiving impulse radio unit; and (e) operating an indicating impulse radio unit in cooperation with the receiving impulse radio unit to determine the location of the mobile position indicating apparatus.
Owner:TDC ACQUISITION HLDG

Interface Method Between Remote Radio Unit And Centralized Transceiver Station

The present invention discloses a method for transmitting signal between a central channel processing Main Unit (MU) and one or more Remote Radio Units (RRUs) by using SDH / OTN in Centralized Base Transceiver Station system using remote radio head (RRH) technology. The method includes: dividing the communication interface between the MU and the RRUs into a user plane and a control plane, the user plane mainly for carrying I / Q sampling data concerning the user data, and the control plane mainly for carrying the data concerning control signaling; forming the I / Q sampling data concerning the user data carried by the user plane into an I / Q data frame via an I / Q data frame adaptation layer, then forming the I / Q data frame into a GFP frame via GFP and transmitting it on SDH / OTN; and carrying the control signaling of the control plane on UDP / IP and / or TCP / IP, and further carrying IP packet on PPP and forming it into a frame by HDLC, transmitting the HDLC frame including the control plane signaling on the SDH / OTN via the control character channel of the GFP frame. According to the present invention, the existing SDH / OTN transmission network is utilized directly, which further reduces the management and maintenance operation needed for signal transmission, as well as networking cost.
Owner:UTSTARCOM TELECOM CO LTD
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