Alcatel Lucent

Alcatel-lucent USA Inc.

Kenneth Y Ho

Diana L Lorenz

Greg Martin

Ken Cheung

Bradford Van Treuren

Robert Allen Novotny

Chen-Huan Chiang

Mark G Bradac

Victor J Velasco

Wayne R Wilcox

John Baldwin

Peter Giannoglou

Peter Laconte

Patrick Joseph Hoban, Iii

John A Andersen

Robert W Barr

Dante De Rogatis

Network elements within a network are configured to retain clock traceability over an asynchronous interface. The network elements can generate and process multi-frames that include two different types of traffic, each synchronized to a different respective clock source. Each of the multi-frames is synchronized to the clock source of one of the traffic types and further includes a timestamp to enable the original clock signal of the other traffic type to be reconstructed at the receiving network element.

Method for retaining clock traceability over an asynchronous interface

A baseband unit independently determines one or both of an uplink delay or a downlink delay for frames transmitted from the baseband unit to a remote radio head based on a round-trip time between the baseband unit and the remote radio head and times determined at the baseband unit, a downlink node associated with the remote radio head, and an uplink node associated with the remote radio head. The times are determined at different nodes after an interval of frames. The baseband unit then may determine a location of user equipment based on one or both of the uplink delay or downlink delay.

Determining uplink and downlink delays between a baseband unit and a remote radio head

The baseband unit includes a first Radio Frequency (RF) coverage unit, a second RF coverage unit, and an interface unit. The first RF coverage unit is configured to communicate with RF devices according to a first communication protocol. The second RF coverage unit is configured to communicate with the RF devices according to a second communication protocol different than the first communication protocol. Further, the interface unit is configured to selectively interface one of the first and second coverage units with the RF devices.

Baseband unit interfacing between baseband section and radio frequency section and method thereof

A distributed test architecture of transmitting boundary scan Test Access Port (TAP_signals over a serial channel is disclosed. The architecture facilitates the system testing and remote field update of distributed base stations in a wireless network. The distributed test architecture enables system testing as if the distributed units are on a backplane within the same chassis by creating a plurality of logical connections between the distributed unit and the test bus using a single bit fiber line and a five bit TAP test bus.

Distributed base station test bus architecture in a wireless network

Growing community of inventors

New Providence, NJ, United States of America

Kenneth Y Ho