Abstract:
PROBLEM TO BE SOLVED: To provide methods and apparatus for an efficient two-stage paging wireless communication system.SOLUTION: Wireless terminals are assigned to paging groups. A few first paging message information bits are modulated (using asynchronous modulation) into a first paging signal and communicated from a base station to a wireless terminal. WT wakes up, receives the first paging signal and quickly checks whether its paging group should wait for a second paging signal. If so, the WT is operated to receive the second paging signal; otherwise, the WT goes back to sleep conserving power. The base station modulates several second message information bits (using synchronous modulation) and transmits signals to WTs. From the information in the first and second paging signals, a WT can determine that it is the paged WT and process the paging instructions. The intended paged WT can transmit a reception acknowledgement signal on a dedicated uplink resource.
Abstract:
PROBLEM TO BE SOLVED: To provide methods and apparatus for efficient two-stage paging wireless communications systems. SOLUTION: Wireless terminals are assigned to paging groups. A few first paging message information bits are modulated into a first paging signal (using non-coherent modulation) to be communicated from a base station to a wireless terminal. WT rises, receives the first paging signal, and checks whether the paging group should wait for a second paging signal. If so, the WT is operated to receive the second paging signal. Otherwise, the WT goes back to sleep conserving power. The base station modulates a number of second message information bits (using coherent modulation) to transmit signals to WTs. A WT can determine that it is the paged WT from the information in the first and the second paging signals to process paging instructions. The objective invoked WT can transmit an acknowledgement signal on a dedicated uplink resources. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method and an apparatus for making handoff determination based on an access terminal which facilitates load balancing in a multi-carrier wireless communications system.SOLUTION: The access terminal is configured to: receive power reference signals from attachment points (base station points); identify for each carrier the attachment points with which the best connection can be established using the corresponding carrier; calculate a first service level indicating a metric corresponding to a current connection corresponding to a first attachment point using a first function; parallelly or serially calculate a second service level indicating a metric corresponding to an alternative connection corresponding to a second attachment point using a second function which is different from the first function; and make a handoff determination based on the first and second service levels indicating the metrics.
Abstract:
PROBLEM TO BE SOLVED: To achieve transmit and/or receive diversity using multiple antennas. SOLUTION: A single transmitter chain within a wireless terminal is coupled over time to a plurality of transmit antennas 312. At any given time, a controllable switching module 310 couples the single transmitter chain to one of the plurality of transmit antennas. With the passage of time, the switching module couples the output signals from the single transmitter chain to different transmit antennas. Switching decisions are based on predetermined information, dwell information, and/or channel condition feedback information. Switching is performed on some dwell and/or channel estimation boundaries. In some OFDM embodiments, each of multiple transmitter chains is coupled, respectively, to a different transmit antenna. Information which is to be transmitted is mapped to a plurality of tones. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for achieving transmit and/or receive diversity using multiple antennas.SOLUTION: A single transmitter chain within a wireless terminal is coupled over time to a plurality of transmit antennas 312. At any given time, a controllable switching module 310 couples the single transmitter chain to one of the plurality of transmit antennas. Over time, the switching module couples the output signals from the single transmitter chain to different transmit antennas. Switching determinations are based upon predetermined information, dwell information, and/or channel condition feedback information. Switching is performed on some dwell and/or channel estimation boundaries. Each of multiple transmitter chains is coupled to a different transmit antenna. Information to be transmitted is mapped to a plurality of tones.
Abstract:
PROBLEM TO BE SOLVED: To facilitate utilization of power-based rate signaling for uplink scheduling in a wireless communications system.SOLUTION: A maximum nominal power (e.g., relative maximum transmit power employed on an uplink) is known to both a base station and a mobile device. The base station and the mobile device agree upon the maximum nominal power. Signaling related to the maximum nominal power for utilization on the uplink is provided over a downlink. Selection of a code rate, modulation scheme, and the like for the uplink is effectuated by the mobile device as a function of the maximum nominal power. Moreover, such selection is based at least in part upon an interference cost evaluated by the mobile device.
Abstract:
PROBLEM TO BE SOLVED: To provide methods and apparatuses for determining, communicating and using information which can be used for interference control purposes. SOLUTION: Wireless terminals measure signals transmitted from one or more base stations, e.g., base station sector transmitters (1010, 1014). The measured signals may be, e.g., beacon signals and/or pilot signals. From the measured signals, the wireless terminal generates one or more gain ratios which provide information about the relative gain of the communications channels from different base station sectors to the wireless terminal (1018). On the basis of signal energy measurements and relative gains generated from the energy measures, reports are generated and sent to one or more base stations. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
Method and apparatus for an access terminal which makes handoff decisions between a number of potential alternative attachment points based on service level indicating metrics are described. The access terminal computes a service level indicating metric differently for a current connection than for a potential alternative connection. A service level indicating metric is a function of loading information and received signal strength. A selection may be made by selecting between attachment points by selecting the attachment point having the highest service level indicating metric from among a plurality of attachment points, one per possible carrier where the attachment point which is considered for a given carrier is the one having the best connection for the given carrier. The access terminal handoff decision approach provides handoff decisions which are nearly as optimal as those which can be achieved using a centralized control node but without the requirement for centralized handoff decisions.
Abstract:
Methods and apparatus for efficient two-stage paging wireless communications systems are described. Wireless terminals (300) are assigned to paging groups. A few first paging message information bits are modulated (using non-coherent modulation) into a first paging signal and communicated from a base station to wireless terminals (200). WTs wake-up, receive the first paging signal and quickly ascertain whether its paging group should expect a second paging signal, if so, the WT is operated to receive the second paging signal; otherwise, the WT goes back to sleep conserving power. The base station modulates (using coherent modulation) a number of second message information bits into a second paging signal and transmits the signal to WTs. From the information in first and second paging signals, a WT can determine that it is the paged WT and process the paging instructions. The intended paged WT can transmit an acknowledgement signal on a dedicated uplink resource.
Abstract:
Configuracion de un dispositivo anfitrion mediante la utilizacion del MMP, que es un protocolo que se basa en el MIP pero que no está asociado con varias deficiencias asociadas con éste ultimo. En particular, es posible configurar un terminal inalámbrico para ejecutar el MMP y para enviar mensajes que se conforman al MMP, mediante un enlace inalámbrico. Es posible configurar una estacion base para que actue como un servidor de DHCP. La estacion base puede proveer informacion sobre la configuracion al dispositivo anfitrion mediante DHCP.