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| Number | Title | Issue Date |
| 6021122 | Method and apparatus for performing idle handoff in a multiple access communication system A method and apparatus which permits handoffs while the mobile station is in the system access state. This is achieved by providing for channel assignment messages to be sent over the paging channel of a plurality of base stations, which increases the pro... | 02/01/2000 |
| 6018662 | Method for performing progressive soft handoff in CDMA systems Methods and apparatus for progressive soft handoff of a mobile user from one basestation to another in multi-channel CDMA systems provide for progressively decreasing the data rate between the mobile user and a "home" basestation while simultaneously prog... | 01/25/2000 |
| 6009086 | Power control of a remote station of a radio communications system A radio communications system (10) having a remote or mobile station (30) and at least two base stations (13, 14). ATM radio channels (31, 32) are provided between the remote station and base stations. The remote station (30) has a logic unit (520) for co... | 12/28/1999 |
| 6002678 | Method of handing-off a remote unit based on overhead information start times The present invention provides a method of handing-off a remote unit (113) from a first base station (101) to a second base station (102). The remote unit (113) communicates with the first base station (101) and establishes communication with a second bas... | 12/14/1999 |
| 5999522 | Method and apparatus for determining hand-off candidates in a communication system A communication system provides wireless communication in a coverage area and includes a base station (100) and a mobile station (290). The base station (100) has a plurality of sectors (210, 220, 230, 240, 250, 260) where a corresponding plurality of pil... | 12/07/1999 |
| 5999814 | Method of detecting and inhibiting mobile station handoff oscillations in a cellular telecommunications network A method of handling oscillating mobile station handoffs between cells in a cellular telecommunications network. The method comprises the steps of detecting whether a mobile station (MS) is exhibiting an oscillating handoff pattern, determining whether th... | 12/07/1999 |
| 5991626 | Methods and apparatus pertaining to handoff in a mobile telecommunication system A method and apparatus in a system comprising cordless telecommunication utilize fuzzy-logic to evaluate at least two radio communication parameters when making a handoff decision, or to produce basic data on which a handoff decision can be made. The para... | 11/23/1999 |
| 5991281 | ATM radio transmission apparatus An ATM radio transmission apparatus includes an ATM unit having a normal operation mode and a low power consumption mode, a CPU for determining a transmission request based on information of a radio section, and a control line for switching an operation m... | 11/23/1999 |
| 5987013 | Handoff control with a pilot used in a cell of a neighboring cell in a CDMA mobile communication network on a service frequency of the neighboring cell To expedite handoff control while a mobile unit moves between first and neighboring second cells, A and B frequencies are assigned for traffic communication to a first base station and only B frequency is assigned for traffic communication to a second bas... | 11/16/1999 |
| 5987011 | Routing method for Ad-Hoc mobile networks A routing method for supporting ad-hoc mobile communications within a radio communications network. The network comprises a plurality of mobile hosts including a source mobile host and a destination mobile host, and a plurality of radio communications lin... | 11/16/1999 |
| 5987326 | Transmit power reduction for a high speed CDMA link in soft handoff A method and apparatus for controlling the transmit power of a high rate code division multiple access (CDMA) link is described. The channel condition to a subscriber unit is evaluated and the configuration of a high rate link in soft handoff is based on ... | 11/16/1999 |
| 5987012 | Method of handing off and a wireless communication device A wireless communication device (100) can be handed off while operating in the slotted mode of a CDMA system. The wireless communication device (100) stores, prior to entering slotted mode, an Active Set including at least one active pilot and a Neighbor ... | 11/16/1999 |
| 5982758 | Method and apparatus for merging neighbor lists in a CDMA mobile telephone system In a code division multiple access (CDMA) spread spectrum cellular communication system in which a mobile station user communicates with another system user via at least one base station, wherein each base station transmits a common pilot signal of a diff... | 11/09/1999 |
| 5982759 | Method for generating dummy frequencies for frequency hard handover in code division multiple access mobile communication system A method for generating dummy frequencies to make frequency hard handover smooth in provision of a digital CDMA mobile communication service when base stations are different in frequency configuration. The coverage of each of the dummy frequencies becomes... | 11/09/1999 |
| 5978365 | Communications system handoff operation combining turbo coding and soft handoff techniques Communication systems, including, for example, cell-based mobile communication systems, multiple satellite communication systems, or multibeam satellite systems, require reliable handoff methods between cell-to-cell, beam-to-beam, or satellite-to-satellit... | 11/02/1999 |
| 5978680 | Transmission method and a cellular radio system The invention relates to a transmission method and a cellular radio system comprising base stations and at least one vocoder, the base stations and the vocoder transmitting a signal to each other, the base stations transmitting a signal to the vocoder sub... | 11/02/1999 |
| 5974036 | Handoff-control technique for wireless ATM Mobility in a wireless ATM network is accomplished by use of hand-off control protocols. A mobile terminal signals a first base station that a hand-off is to occur. In a first preferred embodiment the first base station signals a second base station reque... | 10/26/1999 |
| 5974035 | Telecommunication system, and data-packets switch, and method In a telecommunication system, a mobile terminal is connected, before initiation of a handover procedure, to a first base station, and first data packets flow from the first base station by way of a first link to a data-packets switch which, in response t... | 10/26/1999 |
| 5970058 | Method and apparatus for freeing a frame to aid in handoff determination in a code division multiple access communication system A mobile station (106) in a code division multiple access (CDMA) communication system (100) implements scanning of pilot channels on a different frequency by reserving a periodic frame on the forward channel to allow the mobile station (106) to change fre... | 10/19/1999 |
| 5959981 | Method and apparatus for transmitting information in a communication network In a communication system where frame boundaries for the discrete frames for different users may be offset relative to one another, assignment of a remote unit (125) to a particular frame offset occurs by a processor (321) determining a frame offset belon... | 09/28/1999 |
| 5953668 | Radio channel management functionality distribution in wireless communication system A distributed processing architecture for a wireless communication system in which handover intelligence is distributed between the Base Station Subsystem (BSS), Base Station Controller (BSC) and Base Transceiver System (BTS). Mapping between air-interfac... | 09/14/1999 |
| 5953320 | Method and apparatus for constructing a temporary list of neighboring base stations in a wireless communication device The wireless communication device receives a neighbor list message from a first base station. The neighbor list message includes a respective base station configuration parameter for each of a plurality of base stations. In response to the neighbor list m... | 09/14/1999 |
| 5953324 | CDMA mobile communication method, system and mobile station apparatus A CDMA mobile communication system, which produces a time for monitoring peripheral base stations using different radio frequencies for carrying out hand-off between base stations using different radio frequencies without momentary cutoff of communication... | 09/14/1999 |
| 5949774 | Method of processing a call while switching site affiliation in a radio communication system A subscriber unit handles incoming calls routed through an old server site while in the process of switching site affiliation to a new server site (500). The subscriber unit initiates the switching of site affiliation (510), and during the process, altern... | 09/07/1999 |
| 5949773 | Method for transferring a data signal in a wireless communications system The method of transferring a CDMA data signal (107) associated with a mobile station (103) which operates between a source system (202) and a target system (204). The method includes establishing a frame relay switched virtual circuit (FR SVC) transport f... | 09/07/1999 |
| 5949772 | Communication device The data processing device 400 of this invention comprises a controller unit 402, a data recorder unit 404, a display unit 406, a data input unit 408 and a communication control unit 410. By transmitting a request for service in a multiple-address way to ... | 09/07/1999 |
| 5949771 | Method and apparatus for providing synchronization during hard handoff in a communication system At the beginning of handoff processing at a target base-station, the duplicate message detection mechanism within the layer 2 (L2) signaling layer is disabled such that the target base-station processes all received messages. When the target base-station ... | 09/07/1999 |
| 5943328 | Frame counter for synchronized communication Synchronized communication is provided between a first station and a second station. The first station sets a frame counter to a stored initial value, receives a frame including an identifier uniquely identifying a communication channel designated for com... | 08/24/1999 |
| 5940762 | Inter-system calling supporting inter-system soft handoff A method and apparatus for performing an inter-system soft handoff is described. In accordance with the present invention, when a subscriber unit crosses from a first cellular system to a second cellular system, a base station controller determines if suf... | 08/17/1999 |
| 5940381 | Asynchronous transfer mode radio communications system with handoff and method of operation A radio communications system (10) having a mobile station (30) and at least two base stations (13, 14). ATM radio channels (31, 32) are provided between the remote station and base stations. Each of the ATM channels supports communication though ATM cell... | 08/17/1999 |
| 5940380 | Method and arrangement relating to radio communication networks The invention provides a communication unit (MS1), communicating with a first radio base station (BTS1) on a dedicated communication channel (CH1) in a radio communication network (NET1) using a combination of TDMA and FDMA, with an increased flexibility ... | 08/17/1999 |
| 5940371 | Maintaining the composition of transferred data during handover In a radio data transmission system which transmits data in cell form, the risk of cell loss or the risk of out-of-ordering during handover can be diminished by synchronizing the cell transmission between the new (50) and the old (40) base stations. The o... | 08/17/1999 |
| 5940743 | Power control of mobile station transmissions during handoff in a cellular system A method and apparatus for controlling the transmission power of a mobile station during handoff of a call between base stations of a cellular system A desired transmission power of a mobile station on an assigned traffic channel of a target base station ... | 08/17/1999 |
| 5937002 | Channel hopping in a radio communication system The invention relates to a method and to an arrangement for effecting base orthogonal channel hopping between mobile stations (MS1-MS3) and a base station in a radio communications system. Connections (F1-F3) having low attenuation are allotted a number o... | 08/10/1999 |
| 5933422 | Communication network recoverable from link failure using prioritized recovery classes In a self-healing network, virtual paths between user terminals are classified according to different fault recovery priority levels and communication links are mapped to virtual paths accommodated by the links and to bandwidths remaining in the respectiv... | 08/03/1999 |
| 5931964 | Method and arrangement for channel allocation in a radio communications system The present invention relates to a method and an arrangement for channel allocation in a radio communication system in which data is transmitted between two stations over two or more radio channels. Data is communicated as packets which are divided into b... | 08/03/1999 |
| 5930714 | CDMA inter-mobile switching center soft hand-off The present invention facilitates an inter-mobile switching center (MSC) soft hand-off by creating a communication link between the MSCs through the base station controllers (BSCs). The routers in the BSCs are linked to form a virtual router. This faster ... | 07/27/1999 |
| 5930245 | Radio telephone apparatus for performing space diversity reception to communicate with base stations in a TDMA radio communication system A radio telephone apparatus for performing space diversity reception to communicate with base stations in a TDMA radio communication system under an operating condition in which a frame period containing a signal transmission period, a signal reception pe... | 07/27/1999 |
| 5930242 | Transmitting power control method and apparatus A total transmitting power of a base station calculated in a total transmitting power monitor is compared with a predetermined value in a comparator. When the total transmitting power is detected to exceed a first predetermined value, the transmitting pow... | 07/27/1999 |
| 5930711 | Handoff test method between mobile communication switching stations An improved handoff test method for mobile communication stations which is capable of more easily testing a handoff function between switching stations by providing a handoff generation and control apparatus and processing a forward hard handoff and a bac... | 07/27/1999 |
