Abstract: A method for a handover in a wireless access system supporting multi-carrier operation includes transmitting a handover request message to a serving base station (BS) assigning multi-carriers to the MS through a primary carrier, the multi-carriers including the primary carrier and at least one secondary carrier; receiving, from the serving BS, a handover response message including a BS list and temporary carrier information indicating one of the at least one secondary carrier as a temporary carrier; transmitting, to a target BS selected from the BS list, a ranging request message for synchronizing with the target BS through the temporary carrier while maintaining link connection with the serving BS using the multi-carriers excluding the temporary carrier; receiving, from the target BS, a ranging response message through the temporary carrier; and transmitting, to the serving BS, a handover indication message indicating completion of the handover through the primary carrier.

Abstract: Methods are disclosed for management-packet communication using management frames between various combinations of stations and access points to share application data, for example, a GPS ephemeris and/or its position data for at least one GPS satellite. The management-packet communications may push the application data, or operate in a pull mode based upon availability and requests. The methods may use infrastructure messaging and/or ad hoc or peer to peer messaging schemes. The apparatus supporting these methods include embodiments of integrated circuits, processors, program systems, installation packages, computer readable memories and servers.

Abstract: A system and method are provided for synchronizing a programmable timer time base and external time signal. The method either accepts or supplies an external time signal (e.g., IEEE 1588) at an external interface, links a synchronized time base to the external time signal, and clocks a channel time base with the synchronized time base. Then, a timer channel can be used to perform programmable timer functions in response to the channel time base. Some programmable timer functions include input capture, output compare, quadrature decoding, pulse measurement, frequency measurement, and pulse width modulation (PWM) functions, in one aspect, accepting the external time signal at the external interface includes detecting a packet with a time value, in another aspect, the method uses the channel to detect an event at a channel external interface, and compares the channel time base counter value with an expected value to modify the synchronized time base.

Abstract: A communication terminal, includes: a communicator, configured to transmit and receive data to and from a server storing video contents; an accumulator, configured to accumulate a plurality of partial streams extracted from different time positions within the video contents received through the communicator as asynchronous streams; a decoder, configured to decode at least one of the asynchronous streams and synchronous streams that are not extracted as the asynchronous streams from the video contents, the synchronous streams being streaming-distributed from the server; and a controller, configured to acquire streams having time position information before and after a reproduction time position of the at least one of the asynchronous streams and the synchronous streams decoded by the decoder while the at least one of the asynchronous streams and the synchronous streams are reproduced on the display, and control the display to display the acquired streams after the reproduction.

Abstract: An MBS feedback method is disclosed. The MBS feedback method includes detecting one or more codes multiplexed in Code Division Multiplexing (CDM) from an MBS feedback channel, and adjusting a Modulation and Coding Scheme (MCS) based on the detected one or more codes.

Abstract: Synchronizing at least one wireless sensor includes sending at least one reference message along with a request for acquired data from an access point to the at least one wireless sensor, where the reference message includes a first timestamp indicating when the reference message was sent according to time of a clock of the access point, receiving from the at least one wireless sensor a response that includes the requested data, the first timestamp, and at least one other timestamp corresponding to time of a clock of the at least one wireless sensor, and determining a relative clock offset of the at least one wireless sensor using the timestamps.

Abstract: Synchronizing a wireless sensor includes receiving a first command at the wireless sensor, noting a first timestamp value indicating when the first reply is sent, responding to the first command with a first reply, receiving a second command at the wireless sensor that contains a second timestamp value indicating when the first reply was received and a third timestamp value indicating when the second command was sent to the wireless sensor, noting a fourth timestamp value indicating when the second command was received by the wireless sensor, and determining an offset at the wireless sensor using the first, second, third, and fourth timestamp values. The presence of the first timestamp value may be interpreted as a request to provide timestamp information for synchronization. An access point may communicate with the wireless sensor.

Abstract: An apparatus, method and system are provided to allow a low power and fast application service transmission (LP-FAST) engine to enhance the quality of service (QoS) and optimize the power consumption of the mobile applications operating in a mobile terminal in a service-aware, bandwidth-aware and power-consumption-aware manner.

Abstract: An audio processing method includes: after the terminal accesses the control server, the control server obtains audio capabilities of the terminal through capability negotiation; and the control server selects coded audio data for a terminal and forwards the selected coded audio data to the terminal according to its audio capabilities, without first decoding the selected coded audio data. The audio data does not need to undergo an operation of audio coding and decoding every time when the audio data passes through a control server, and the coding and decoding operations performed by the control server are reduced drastically.

Abstract: A prediction block of a current block is created by performing intra prediction or inter prediction on the current block. The prediction block is filtered by using a predetermined filter. The current block is encoded based on the filtered prediction block. A compression rate of image encoding may be substantially improved by more accurately performing a prediction encoding.

Abstract: A method and apparatus for transmitting a ranging channel in a wireless communication system is provided. A mobile station (MS) receives frequency resource allocation information of a ranging channel and allocates the ranging channel to one ranging subband on a frequency domain determined based on the frequency resource allocation information of the ranging channel. The MS transmits the ranging channel. The frequency resource allocation information of the ranging channel includes a cell identifier (ID) of a cell and the number of allocated subbands or the number of allocated subband contiguous resource units (CRUs).

Abstract: Methods and apparatus to use window alignment information to process acknowledgment information associated with transmitted data blocks are disclosed. An example method disclosed herein comprises receiving acknowledgment information piggy-backed with data when a first previously transmitted block is associated with at least one of a tentative acknowledgment state or a pending acknowledgment state, and advancing a transmit window when the acknowledgment information indicates that all previously transmitted data blocks including the first previously transmitted block have been positively acknowledged.

Abstract: A system and method directed to carrying out dynamic secured group communication is provided. The method includes: obtaining a first packet that includes a first header; forming a frame that includes the first header in encrypted form; combining the first header and the frame to form a second packet and forming a second header; encapsulating the second packet with the second header to form a third packet, and communicating the third packet into the second network from the second source node for termination to the second-destination node. The first header includes a first source address of a first source node of a first network, and a first destination address of a first destination node of the first network. The second header includes a second source address of a second source node of a second network, and a second destination address of a second destination node of the second network.

Abstract: Methods, devices and systems for a wireless communication system using multiple-serving nodes are provided. In one embodiment, a method of wireless communication comprises sending from a first node a downlink control signal to a wireless device using a first communication link; receiving by said first node an uplink control signal from said wireless device via a second node using a third communication link; and forwarding by said first node another downlink control signal from said second node to said wireless device using said third communication link and said first communication link.

Abstract: Methods of and systems for estimating the probability of movement of access points in a WLAN-based positioning system are provided. Disclosed are methods to quantify the probability that a particular location estimate of a mobile device made by a Wi-Fi based positioning system is correct to within an arbitrary accuracy. Implementations use observed access point cluster size, age information for access point location determination, and/or the probability that one or more access points detected by the mobile device have relocated based on historic information about the movement of a collection of access points to make the probability determinations.

Abstract: A circuit includes a transceiver coupled to transmit an outbound signal in accordance with a plurality of transmit parameters to at least one remote station and receive an inbound signal from the at least one remote station. The transceiver detects a packet transmission failure, selects one of a plurality of transmission failure causes, and adjusts at least one of a plurality of transmit parameters, based on the selected one of the plurality of transmission failure causes.

Abstract: Content is distributed from a source to a sink only if the sink is within a predetermined geographic locality. In one embodiment, a signature request is sent to the sink. The sink obtains an actual signature compares it to the requested signature, and if the requested signature and the actual signature resemble each other sufficiently closely, then the content is sent to the sink The signature is compiled from parameters obtained from appropriate parameter detectors. The parameter detectors generate, detect and monitor various signals required for determining the locality of the sink.

Abstract: There is provided a method for enabling a user equipment (UE) to transition between a non-discontinuous reception (Non-DRX) level and at least one discontinuous reception (DRX) level. The UE in a DRX level wakes up periodically to monitor a scheduling channel. The method includes receiving a DRX indicator in a Non-DRX level with continuously monitoring the scheduling channel and transitioning from the Non-DRX level to a DRX level indicated by the DRX indicator. The UE can transition between multiple DRX levels by an explicit command/signaling.

Abstract: A method is provided for transmitting in-band signaling information in a wireless broadcasting system that transmits broadcast service data through a plurality of data Physical Layer Pipes (PLPs) constituting a frame. Non-PLP signaling information is included in a data PLP for a particular broadcast service and the data PLP is transmitted through a current frame, when no data PLP for the particular broadcast service is transmitted in at least one frame to be transmitted within a maximum schedulable period NMAX from a time the current frame is transmitted. The non-PLP signaling information indicates that no data PLP for the particular broadcast service is transmitted within the maximum schedulable period.

Abstract: A cross-layer architecture for a network device having a number of network interfaces is provided. Each of the network interfaces implements a number of low level layers of a protocol stack and includes an associated network based cross-layer agent. The network device also includes an application based cross-layer agent associated with one or more high level protocol stack layers including an application layer. When the application layer desires to form a network connection to another network device, an arbitration agent operates to identify one of the network interfaces for the network connection. The arbitration agent then effects interconnection of the application based cross-layer agent and the network based cross-layer agent of the network interface and interconnection of the high level protocol stack layers and the low level protocol stack layers of the network interface, thereby forming a complete protocol stack having a cross-layer architecture for the network connection.