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| Number | Title | Issue Date |
| 6009087 | Mobile communication system using various multiple access methods A mobile communication system in which various access methods may be selected according to the user's priority. In the mobile communication system, each of a mobile station and radio base stations has a radio processor, which has TDMA, CDMA and FDMA commu... | 12/28/1999 |
| 5960352 | Multilayer cellular mobile radio network with optimized frequency re-use plan, and associated method In a combined time-division multiple access and frequency-division multiple access multilayer cellular mobile radio network comprising macrocells and microcells, each macrocell being associated with at least one control frequency and at least one traffic ... | 09/28/1999 |
| 5960354 | Multiband mobile telephone system A cellular mobile telephone system is provided. The system operates on frequency bands each of which comprises a respective total number of sub-bands. Each sub-band has a different respective frequency. The system includes a network of base stations, and ... | 09/28/1999 |
| 5953665 | Method and apparatus for digital control channel (DCCH) scanning and selection in a cellular telecommunications network A method for selecting a digital control channel (DCCH) for a mobile station operating in a cellular system. In the method, after a first DCCH meeting rssi requirements has been located, a search is made for a more preferable second DCCH before camping on... | 09/14/1999 |
| 5901356 | Channel allocation pattern in a cellular communications system A method of allocating channels in a cellular system in which sectored base sites serve subscribers equipped with directional antennas. A plurality of available communication channels is divided into channel subsets. Base sites are arranged in clusters, a... | 05/04/1999 |
| 5887262 | Smart antenna backwards compatibility in digital cellular systems This invention teaches a method of operating a cellular communication system, and includes the steps of: (a) allocating mobile stations into groups as a function of their ability to support a smart antenna transmission from a base station; and subsequentl... | 03/23/1999 |
| 5828963 | Selecting radio frequency channels for reuse in micro-cellular radio communications systems A micro-cellular radio communications system (microsystem) is arranged to re-use radio frequency channels which are assigned for use in a cellular radio system (macrosystem) in the same vicinity. The microsystem maintains a list of each frequency channel ... | 10/27/1998 |
| 5805581 | Mobile communication system using various multiple access methods A mobile communication system in which various access methods may be selected according to the user's priority. In the mobile communication system, each of mobile stations and radio base stations has a radio processor, which has TDMA, CDMA and FDMA commun... | 09/08/1998 |
| 5802456 | Method and apparatus to mitigate interference caused by an overlay communication system A method and apparatus for mitigating interference in a communication system caused by an overlay system. The overlay system and the communication system utilize preferred channels (201-207). The communication system first utilizes a group of communicatio... | 09/01/1998 |
| 5771001 | Personal alarm system A new Personal Alarm System for detecting whether a person is in an emergency situation by measuring blood pressure, pulse and temperature, and thereafter transmitting such information and location through cellular relay stations to a home receiver where ... | 06/23/1998 |
| 5754536 | Digital speech interpolation method and apparatus The method and apparatus of the present invention uses DSI with a TDMA/FDMA communication protocol. For each speech frame detected by a speech detector (110), a communication unit (CU) (108) sends (440) a speech detected indicator (SDI) (208) to a switchi... | 05/19/1998 |
| 5513379 | Apparatus and method for dynamic resource allocation in wireless communication networks utilizing ordered borrowing A communications system and method of ordered borrowing which facilitates dynamic access to a global channel set that has been partitioned into subsets, with each cell of the system being assigned a particular subset of the channel set. The assignment of ... | 04/30/1996 |
| 5457680 | Data gateway for mobile data radio terminals in a data communication network A method is disclosed for managing the communication of data packets between a mobile data radio terminal and a plurality of fixed base stations in a data communications network. In a system of a plurality of base stations (each including a set of cellula... | 10/10/1995 |
| 5442634 | Resource allocation to non-critical users In a communication system having a plurality of sites (100, 101), resource allocations are monitored in the plurality of sites to identify communication resources (108) that support communications for critical members of a user group and historical inform... | 08/15/1995 |
| 5437054 | Method and apparatus of assigning and sharing channels in a cellular communication system A method of assigning and sharing channels in a cellular communications system having a plurality of cells forming a plurality of cell clusters of size N. Each cell has at least one base station capable of sending and receiving signals and each cell has a... | 07/25/1995 |
| 5412375 | Method of selecting an air interface for communication in a communication system In a communication system having a plurality of air interfaces, one of the air interfaces is assigned for use for a desired communication by transmitting a message, having a list of air interface capabilities of the subscriber, from the subscriber to a ba... | 05/02/1995 |
| 5319795 | Cellular mobile communications system using frequencies commonly shared by neighboring cells for handoff operations In a cellular mobile communication system, each base station is allocated common frequencies shared with other base stations in addition to unique frequencies. One of the unique frequencies is assigned by a base station to a mobile terminal in response to... | 06/07/1994 |
| 5235632 | Mobile telephony system intended for indoor and outdoor subscriber use A mobile telephony system includes an internal part-system, which is installed in a building and an external part-system. The internal part-system has internal base stations which are connected to a mobile switching center, to which external base stations... | 08/10/1993 |
