Robert A Lien, 51Mount Prospect, IL

6421338, Jul 16, 2002

Jun 5, 1998

09/092777

Charles Calvin Byers - Aurora IL
Michael Hirsh Cooper - Oak Park IL
Robert Leroy Lien - Batavia IL

Lucent Technologies Inc. - Murray Hill NJ

H04L 1266

370352, 379219

A network resource server is deployed in a convergent telecommunications network for providing traditionally service circuit type applications to both circuit switches and packet switches of the convergent network. The network resource server includes a variety of processors for accommodating specific application requests from nodes within the convergent network. Advantageously, the network resource server has a greater capacity than traditional service circuit nodes and is able to serve both the circuit-based network elements and packet-based network elements in a convergent network. For this reason, the network resource server eliminates the need for traditional service circuit nodes and various types of data servers.

5859850, Jan 12, 1999

Dec 28, 1995

8/579706

Robert Leroy Lien - Batavia IL

Lucent Technologies Inc. - Murray Hill NJ

H04L 1256

370396

A method and apparatus for interfacing ATM network packet type communications to STM frame type communications. This method and apparatus is especially useful for interfacing isochronous ATM cells to STM frames. The apparatus concerns an elastic store which receives ATM cells and sorts them in a set of FIFOs into their respective frames. The FIFO storing and retrieval method removes jitter and delay. A controlled clock within the elastic store clocks reads the information out of the FIFOs and into a STM network.

5261090, Nov 9, 1993

Jun 12, 1990

7/536819

Robert L. Lien - Batavia IL

AT&T Bell Laboratories - Murray Hill NJ

G06F 722
G06F 15417

395600

A range of data that is included in a data file is represented among the records of the file by a record of a lower limit of the range and a separate, sequential, record of an upper limit of the range. Each searchable representation of a record, such as a table entry, has a pair of flags to identify the record as a range low limit or a range high limit, or neither. When a conventional binary search of the ordered file records is performed and completed and the sought-for datum is not found, the record last examined during the search is checked. If that last record is lower in the order than the sought-for datum and its low range limit flag is set, or if the record is higher in the order than the sought-for datum and its high range limit flag is set, then the sought-for datum is in the file and is a member of the included range.

4475010, Oct 2, 1984

May 5, 1983

6/491905

George D. Huensch - Aurora IL
Robert L. Lien - Batavia IL
Jerol M. Lind - Wheaton IL
Verne H. MacDonald - Elberon NJ

AT&T Bell Laboratories - Murray Hill NJ

H04Q 704

179 2EB

In a cellular mobile telecommunication system, a method and apparatus for controlling the process of locating a mobile unit from the cell sites. When a mobile unit goes beyond the radio range of its associated controlling cell site, that cell site sends a message to nearby cell sites to measure and report the strength of the received signal from that mobile on each of their directional antennas and to report radio channel availability. These reports are returned to the controlling cell site which compares the received signal strength mesurements against stored thresholds. The controlling cell site generates and transmits to the mobile telecommunications switching office (MTSO) a hand-off request message including a list of candidate hand-off cell sites and directional antennas. The MTSO then selects an available channel associated with one of the candidate cell sites and antennas and generates a sequence of messages to hand-off communications control from the controlling cell site to a candidate cell site.

5396492, Mar 7, 1995

Apr 28, 1993

8/054332

Robert L. Lien - Batavia IL

AT&T Corp. - Murray Hill NJ

H04J 306

370 60

An adaptive clock recovery arrangement for deriving a synchronous clock from an asynchronous, packet stream such as an asynchronous transfer mode (ATM) cell stream. The deviation in the magnitude of information stored in a first-in-first-out memory is continually monitored, and the synchronous clock frequency, referred to as the adaptive line clock frequency, is adjusted in a plurality of modes, under the control of a processor. The adjustment is made in response to a detected increasing condition of the monitored deviation. The adjustments are open-loop adjustments made without continually adjusting the adaptive line clock frequency based on the monitored deviation. Damping is substantially reduced compared with "conventional" PLL arrangements because the open-loop adjustments result in a rapid frequency correction with perfect or nearly perfect deadbeat damping, i. e. without the frequency oscillations that continue after the correct frequency is reached in closed-loop arrangements.