Celcore Assigned Patent for Enhanced Cellular Coverage and Call Delivery.MEMPHIS Memphis, city, ancient Egypt Memphis (mĕm`fĭs), ancient city of Egypt, capital of the Old Kingdom (c.3100–c.2258 B.C.), at the apex of the Nile delta and 12 mi (18 km) from Cairo. , Tenn.--(BUSINESS WIRE)--Aug. 5, 1996--Celcore, Inc. announced today that it has been assigned a patent for a new method of providing seamless service to cellular phone users traveling between coverage areas served by cellular systems from different manufacturers. The new patent -- No. 5,521,961 -- is the second assigned to Celcore for its Hybrid MicroSystem technology which enables operators to implement underlay cellular systems in the same coverage areas as existing cellular networks. "Celcore's patented Hybrid MicroSystem provides a unique solution for cellular carriers to serve both public and private cellular users on the same platform. As wireless service becomes more ubiquitous and competitive, the need for higher capacity, better coverage, and specialized services becomes increasingly critical in the cellular industry," commented Thomas Berger There are several people called Thomas Berger:
The officer of a firm responsible for day-to-day management, usually the president or an executive vice-president. . Previously, networking between different manufacturers' cellular systems presented compatibility problems to cellular service providers. Due to the legacy technology inherent in the existing analog cellular network, a cellular subscriber operating near the coverage boundary between two systems was exposed to the risk of being "lost" where neither system recognized the subscriber, resulting in a loss of service. While cellular system manufacturers have addressed this issue within their own products, resolution between different manufacturers' cellular systems has remained a challenge. Celcore's Hybrid MicroSystem solves this dilemma by using standard facilities such as T1 trunks and the IS-41 cellular networking standard -- regardless of the network topology See topology. or type of switching equipment a cellular operator is using. Celcore's patented algorithms specify control schemes for managing mobile registrations, incoming call delivery, and hand-offs in a variety of real-world radio frequency environments. All of this is accomplished without the risk of loss of service to subscribers at the coverage boundary. Celcore's Hybrid MicroSystem provides enhanced coverage, greater capacity, and specialized services for both public and private cellular users on the same platform. This enables cellular operators to reduce infrastructure cost while increasing overall system functionality to provide service differentiation for its subscribers. With headquarters in Memphis, Tenn., Celcore develops and markets wireless infrastructure equipment worldwide. Based on a distributed client-server architecture client-server architecture Architecture of a computer network in which many clients (remote processors) request and receive service from a centralized server (host computer). , Celcore wireless solutions are designed for scaleable and cost-effective implementation. Celcore's diverse product line includes its GlobalSystem portfolio of cellular, micro-cellular, fixed wireless, GSM, PCS (1) (Personal Communications Services) Refers to wireless services that emerged after the U.S. government auctioned commercial licenses in 1994 and 1995. This radio spectrum in the 1. , CDMA (Code Division Multiple Access) A method for transmitting simultaneous signals over a shared portion of the spectrum. The foremost application of CDMA is the digital cellular phone technology from QUALCOMM that operates in the 800 MHz band and 1.9 GHz PCS band. and TDMA (Time Division Multiple Access) A satellite and cellular phone technology that interleaves multiple digital signals onto a single high-speed channel. For cellular, TDMA triples the capacity of the original analog method (FDMA). systems; GlobalSwitch(TM) family of modular Mobile Switching Centers; GlobalCell(TM) base stations for both analog and digital air protocols; Network Management System with graphical user interface graphical user interface (GUI) Computer display format that allows the user to select commands, call up files, start programs, and do other routine tasks by using a mouse to point to pictorial symbols (icons) or lists of menu choices on the screen as opposed to having to ; and GlobalHub(TM) intelligent network platform for advanced personal mobility services. CONTACT: Celcore, Inc., Memphis Steve Chen, 901/759-5155 |
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