A system and method for communicating information signals using spread spectrum communication techniques. PN sequences are constructed that provide orthogonality between the users so that mutual interference will be reduced, allowing higher capacity and better link performance. With orthogonal PN codes, the cross-correlation is zero over a predetermined time interval, resulting in no interference between the orthogonal codes, provided only that the code time frames are time aligned with each other. In an exemplary embodiment, signals are communicated between a cell-site and mobile units using direct sequence spread spectrum communication signals. In the cell-to-mobile link, pilot, sync, paging and voice channels are defined. Information communicated on the cell-to-mobile link channels are, in general, encoded, interleaved, bi-phase shift key (BPSK) modulated with orthogonal covering of each BPSK symbol along with quadrature phase shift key (QPSK) spreading of the covered symbols. In the mobile-to-cell link, access and voice channels are defined. Information communicated on the mobile-to-cell link channels are, in general, encoded, interleaved, orthogonal signaling along with QPSK spreading.

System and method for generating signal waveforms in a CDMA cellular telephone system

A system and method for managing a telecommunications network. The system and method employs a network management architecture that provides an overlay in which network management functions are performed. The network management architecture includes a workstation function that provides a graphical user interface (GUI) for a user to interact with an object model of the physical telecommunications network, a telecommunications network management subsystem that provides an object model of the network including object models of network equipment and connectivity between the equipment, a database subsystem that stores "current" and "future" views of the network, and an object request broker that translates objects from a first object-oriented paradigm to a second object-oriented paradigm for use by the GUI. The network management architecture facilitates network design by determining network performance metrics. The network architecture can also be used to assess the performance of a given network configuration by virtue of simulation. The network architecture can also be used to initialize switchover logic for network restoration.

Network management system

A cellular telephone location system for automatically recording the location of one or more mobile cellular telephones comprises three or more cell site systems (12). Each cell site system is located at a cell site of cellular telephone system. Each cell site system includes an antenna that may be mounted on the same tower or building as the antenna employed by the cellular telephone system and equipment that may be housed in the equipment enclosure of the corresponding cell site. The cell site systems are coupled via T1 communication links (14) to a central site (16). The central site may be collocated with the cellular telephone system's MTSO. The central site (16) is further coupled to a database (20), which may be remotely located from the central site and made available to subscribers.

Cellular Telephone Location System

Techniques to implement MBMS services in a wireless communication system. In one aspect, a method is provided for processing data for transmission to a plurality of terminals. Frames of information bits (which may have variable rates) are provided to a buffer implementing a matrix. The matrix is padded with padding bits based on a particular padding scheme to support variable frame rates. The frames are then coded based on a particular block code to provide parity bits. The frame of information bits and the parity bits are then transmitted to the terminals. In another aspect, a method is provided for controlling the transmit power of a data transmission to a plurality of terminals. In accordance with the method, TPC streams are received from the terminals and processed to obtain a stream of joint power control commands used to adjust the transmit power of the data transmission.

Multi-media broadcast and multicast service (MBMS) in a wireless communication system

The invention relates to a method for using an application (18) in a mobile station (1). The application has a first mode of operation and a second mode of operation, whereby the first mode of operation is passive, and in the second mode of operation the application controls the master control unit MCU of the mobile station. The invention also relates to a system for making payments, comprising at least one mobile station (1), which has an application (18), means for using the application (18), and the first means of data transfer (IR, 20, RF) for local data transfer. The system also comprises at least one cash register (21) or the like, which has the second means for data transfer (IR2), and the application (18) comprises means for transferring data between the first means for data transfer (IR) and the second means for data transfer (IR2).

Method for using applications in a mobile station, a mobile station, and a system for effecting payments

A system and method of evaluating the radio coverage of a geographic area serviced by a digital cellular radiotelephone communication system is described which comprises a plurality of base stations each having a transmitter and a receiver and a plurality of mobile units having co-located transmitters and receivers for transmitting and receiving communication message signals between the base stations and a mobile unit. During operation, the position of at least one of the mobile units operating within the geographic area is located when a call is received by a base station. The base station monitors the signal quality of the call and collects information relevant to the actual performance of the communication system. The mobile unit location and corresponding signal quality data are passed from the base station to a central operation and maintenance unit which collects the data, performs all necessary analytic and arithmetic computations, and provides a user-friendly representation of the characteristics of the radio coverage. With this representation of the radio coverage characteristics, the system operator can quickly and efficiently diagnose coverage deficiencies and take the necessary corrective action. By continuously monitoring subscriber calls and updating the pictographic representations, the system operator can actually observe the effect of the adopted modifications in a pseudo real-time fashion.

Cellular radiotelephone diagnostic system

A method of selecting handover targets for a communication unit (40) exchanging a communicated signal through a serving base site (10-19) in a digital cellular system. The method uses timing advance to determine a relative distance of a communication unit (40) to the serving base site (10-19). The method comprises the steps of comparing a timing advance value with a first threshold. The first threshold may be equal to a distance one and one-half times the radius of the serving cell. When the timing advance value exceeds the first threshold, a base site frequency list is modified to include base sites non-adjacent the serving base site. The identity of the base sites non-adjacent the serving base sites may be determined from the directionality of communication unit (40). The method further includes the step of selecting a handover target providing highest relative RRSI value to the communication unit (40) from the modified base site frequency list.

Directional handover control in digital mobile radio systems employing maho

A method and apparatus for handoff to a rescue channel is introduced without the need to send and receive handoff control messages. In the preferred embodiment of the present invention, coordination of the rescue procedure at the infrastructure (450, 350, 351, 352) and mobile station (330) is provided first by disabling the mobile transmitter followed by subsequent detection of signal loss and frame erasures at the serving cells (311), then by enabling the mobile transmitter followed by subsequent detection of signal by a rescue cell (310, 312, 313, 314), and finally by enabling the rescue cell channel transmitter followed by subsequent detection and reception of signal and frames by the mobile station (330).

Method for autonomous handoff in a wireless communication system

A method and apparatus are provided for authenticating a first node M 220M in an ad hoc network 200. Node I 220I can receive a request from node M 220M to join the ad hoc network 200. This request includes, among other things, a biometric input associated with a first user of the node M 220M. Before the node M 220M is permitted to join the ad-hoc network, Node I 220I can authenticate the first user based on the biometric input by determining whether the biometric input matches biometric codes stored in Node I 220I.

System, method and apparatus for authentication of nodes in an Ad Hoc network

A system and method of resource allocation within a communication system is provided. A communication system comprises a plurality of nodes operating in a first architecture network mode, wherein at least a portion of the plurality of nodes are reconfigured to operate in a second architecture network mode in response to a change in one or more network performance requirements. When the plurality of nodes are operating in a distributed architecture network mode, at least a portion of the plurality of nodes are reconfigured to operate in a clustered architecture network mode in response to an increase in one or more network performance requirements. When the plurality of nodes are operating in a clustered architecture network mode, at least a portion of the plurality of nodes are reconfigured to operate in a distributed architecture network mode in response to a decrease in one or more network performance requirements.

Jeffrey D. Bonta

Papers

Cellular radiotelephone diagnostic system

Directional handover control in digital mobile radio systems employing maho

Method for autonomous handoff in a wireless communication system

System, method and apparatus for authentication of nodes in an Ad Hoc network

System and method of resource allocation within a communication system