Abstract:
PROBLEM TO BE SOLVED: To provide a data communication system capable of variable rate transmission, in which high rate packet data transmission improves utilization of a forward link and decreases transmission delay.SOLUTION: Data transmission on the forward link is time multiplexed and a base station 4 transmits at the highest data rate supported by the forward link at each time slot to one mobile station 6. The data rate is determined by the largest C/I measurement of forward-link signals when measured at the mobile station. Upon determination of a data packet received in error, the mobile station transmits a NACK message back to the base station. The NACK message results in retransmission of the data packet received in error. The data packet can be transmitted out of a sequence by the use of a sequence number to identify each data unit within the data packet.
Abstract:
PROBLEM TO BE SOLVED: To provide the dynamic assignment of a home agent and a home address in wireless communication so that a mobile node away from a home may receive local access services from a network in a visited destination. SOLUTION: A mobile node accesses a network in a visited destination. The network in the visited destination authenticates the mobile node by its home network. The network in the visited destination then assigns a visited home agent and a home address for the mobile node. The mobile node subsequently performs secure binding with the visitor home agent. The mobile node continues communication using the visitor home agent and the home address. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide transparent mobility of an entity within a network. SOLUTION: A modem pool controller A (MPC A) determines that one of dedicated controllers (DC) is to be moved to an MPC B within another access point (1000), and a message including network interface associated information is transmitted to the MPC B (1010). The MPC B generates and initializes the DC (1020) and request the MPC A to complete the movement of the DC (1070). The MPC A instructs a local router to stop packets to the MPC A (1080), transmits remaining status information to the MPC B and cancels assignment of the DC. The MPC B completes the configuration of the DC, transmits a message requesting layer resetting to an access terminal, transmits an updating message to the local router, and completes anchor point movement. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a communication system capable of completing soft hand-off, even when a communication link between an active base station and a mobile station deteriorates before the mobile station receives a handoff direction message. SOLUTION: A device for wireless communications (hereinafter referred to as device) maintains a list of base stations X that the mobile station is in communication with, referred to as an "Active Set". Further, the device maintains another list of base stations Y close to the base stations X in the Active Set. The list is called a "Neighbor Set". A memory in the device includes information which enables the device to demodulate information transmitted from the base stations Y in the Neighbor Set. When a base station Y is included in a pilot strength measurement message (PSMM), the device places the base station Y in the Active Set. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method and apparatus for efficient use of communication resources in a data communication system under overload conditions. SOLUTION: In a communication system (1400) for communication of data, a method and apparatus is provided for detecting a request for opening a connection for a user (1407) for communication of data, selecting an open connection, releasing the selected open connection, and allocating, to the user (1407), communication resources corresponding to resources released on the basis of releasing the selected open connection. The selected open connection is in an idle open state. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a technique and an apparatus for testing performance of terminals and access points in CDMA data system. SOLUTION: The framework comprises a Forward Test Application Protocol (FTAP) for testing forward channels and a Reverse Test Application Protocol (RTAP) for testing reverse channels. Techniques are also provided to (1) test different types of channels (e.g., traffic channels as well as auxiliary channels), (2) test bursty data transmissions, (3) support "persistence" testing (i.e., continued testing over connection and disconnection), (4) force the settings of certain auxiliary channels (e.g., so that the error rate of the channels may be determined), and (5) collect, log, and report various statistics that may be used to derive performance metrics such as throughput and packet error rate. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve utilization of the forward link and to decrease the transmission delay through high rate packet data transmission in a data communication system capable of variable rate transmission. SOLUTION: Data transmission on the forward link is time-multiplexed and the base station transmits at the highest data rate supported by the forward link at each time slot to one mobile station. The data rate is determined by the largest C/I measurement of the forward link signals as measured at the mobile station. Upon determination of a data packet received in error, the mobile station transmits a NACK message back to the base station. The NACK message results in retransmission of the data packet received in error. The data packets can be transmitted out of sequence by the use of sequence number to identify each data unit within the data packets. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a system enabling a subscriber station to function in both a broadcast mode and a communication mode. SOLUTION: A method and a system for providing signaling in a cellular telephone system providing broadcast services fully integrate broadcast services with the service provided by the cellular telephone system. The signaling method coordinates interaction between an access network and the subscriber station to allow the subscriber station to decode the broadcast service to receive paging messages while receiving the broadcast service to properly transition between operation states, and other functions known to persons skilled in the art. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To construct an optimum network system having a control point, routers, and network access points which is capable of handling failures in the control point and routers. SOLUTION: Functionality of the control point is distributed, and the control point can be co-located with every network access point. Each of the plurality of network access points is configured to communicate with at least two of the plurality of routers and to communicate with at least one remote user. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To properly distribute utilizable capacitance of resources that can be utilized among users, relating to a system containing the resources shared by a plurality of users. SOLUTION: The system comprises a resource with capacitance measurement and a plurality of users, each of which comprises a usage rate, a set of persistence vectors, and a set of available rate. The use of the resource by each of the plurality of users is determined at least partially by the use rate of the user, each usage rate of the plurality of users is selected from among at least the set of available rate of the user, and the selection is determined at least partially by one of the sets of the persistence vectors. COPYRIGHT: (C)2008,JPO&INPIT