Abstract: The present invention relates to a method for configuring an acknowledgement mode of an HARQ re-transmission protocol used for acknowledging the delivery of data packets of a service provided from a transmitting entity to a receiving entity in a wireless communication system comprising a controlling entity in a radio access network. To improve the overall transmission efficiency while providing transmission robustness, the controlling entity configures, based on at least one of a QoS attribute or physical layer parameter, one of a first and second acknowledgement mode.

Abstract: A method, apparatus and computer program product for feedback-based online network coding is presented. In one embodiment, a transmitting node determines a linear combination of packets to transmit from a transmit queue. The transmitting node transmits the linear combination of packets. The transmitting node determines whether a packet can be removed from the transmit queue, wherein when a determination is made that a packet can be removed from the transmit queue then removing the packet from the transmit queue, and when a determination is made that a packet cannot be removed from the transmit queue then refraining from removing the packet from the transmit queue.

Abstract: A system and method for enabling a wireless communication device to register a temporary public IP address assigned to the device by a network access translation module, when the device is initially informed only of a private, non-routable IP address that has been assigned to it. In one embodiment, the device sends a “blind” registration message to an SIP server, with the private IP address of the device being translated to the public IP address by the NAT and with the SIP server registering the “originator” address in the header. In another embodiment, a registration server detects a message indicating the public IP address and sends the public IP address back to the device, so that the device can conventionally register the address with the SIP server.

Abstract: Certain aspects of a method and system for transparent transmission control protocol (TCP) offload with transmit and receive coupling are disclosed. Aspects of a method may include collecting at least one received TCP segment for a determined network flow via a network interface card (NIC) processor. The state information for the received TCP segment and state information for transmitted TCP segments for the determined network flow may be stored at the NIC without transferring state information for the received TCP segment and the state information for the transmitted TCP segments to a host system communicatively coupled to the NIC. A new TCP segment comprising the collected TCP segments may be generated after a termination event occurs. The generated new TCP segment, new state information for the generated new TCP segment, and the state information for the transmitted TCP segments may be communicated to the host system for TCP offload.

Abstract: A cellular wireless communication system and method of operation manages Walsh codes in order to ensure that sufficient Walsh codes are available to prevent call blocking and to support additional hand-off operations. In an initial operating condition, the cellular wireless communication system services normal hand-off operations in which a maximum number of cells and sectors may participate in hand-off. With hand-off operations according to the present invention, each cell or sector participating in hand-off for a mobile terminal uses a unique Walsh code for covering its forward link signals. When the number of Walsh codes available for servicing new calls is reduced so that it meets or exceeds a Walsh code availability threshold, the number of cells and sectors that may participate in hand-off is reduced from the maximum number. In the number of participating cells/sectors results in release or non-use of some Walsh codes.

Abstract: In example methods and algorithms, a node in a wireless mesh network calculates an estimated cost for a packet flow through the node. The estimation may be based on the back-log at the node and the cost of downstream neighbor nodes for the flow. Further, selection of a downstream flow and a downstream neighbor node may be based on the estimation. A packet re-ordering algorithm is also described which intercepts packets received at a node and delays delivery of the packet to the IP layer if an earlier packet in the sequence of packets has not been received.

Abstract: A method for switching group assignment of an access terminal (AT) includes receiving a control message indicating a current group to which the AT is assigned and an assigned group to which the AT is to be switched, and decoding data in a next-received group interlace which corresponds to the assigned group.

Abstract: A mailbox system that has a distributed architecture is disclosed. The system includes an application server, a media server, and message storage system having subscriber mailboxes. Application messages may be stored in a subscriber's mailbox. When the subscriber accesses an application message, the application server uses the application message to create an application, which is then provided to the media server. The media server then executes the application for the subscriber.

Abstract: A method for establishing a communication session between a first communication client located within a first communication network, and a second communication client, via a signaling server located within a second communication network distinct from the first communication network and connected thereto via a address translation device. The method includes the step of binding a first address and a second address of the first communication client within the address translation device, by having the first communication client transmit registration messages according to the UDP protocol to the communication server.

Abstract: A communication system and method for measuring communication channel qualities of one or more partial bands of a communication band is provided. A mobile station represents measured communication channel qualities of the partial bands by relative value information in a frequency direction and/or time direction and selectively communicates the relative value information to a base station. The relative value information in the frequency direction represents a difference in the communication channel qualities of the partial bands at a first timing. The relative value information in the time direction represents a difference between the communication channel qualities of the partial bands at a second timing and the communication channel qualities of the partial bands at a time prior to the second timing.

Abstract: Managing communication in an orthogonal frequency division multiple access (OFDMA) system using segments in an OFDMA frame is accomplished by setting at least a first segment in the OFDMA frame as a high power segment for a plurality of base station in the OFDMA system. Further, communication is established between at least one base station and at least one communication device in the OFDMA system, in response to setting the at least first segment as a high power segment. Managing the communication further includes assigning a region of the first segment to a set of base stations in the OFDMA system. The assigned region can be used by the set of base stations at high power level to communicate with communication devices located in overlapping areas. A method for coordinating uplink transmission in the OFDMA system for reducing uplink interference is also provided.

Abstract: Embodiments include methods performed in time division duplex (TDD) radio communication systems in which information is communicated between a first node (e.g., a base) and a second node (e.g., user equipment) in a context of a data frame that includes a plurality of slots. The second node applies an adjustment to an alignment between a second node transmit clock and a second node receive clock based on a propagation delay between the first node and the second node. The adjusted alignment ensures that second node receive slots and second node transmit slots are non-overlapping with each other in time, and that the second node will operate in a half-duplex mode of operation. The second node transmits a transmit burst during the second node transmit slots, and receives a first node transmit burst from the first node during the second node receive slots.

Abstract: A handover or cell change procedure in a cellular radio communications system starts with mobile user terminal present in a serving cell and having multiple radio resources simultaneously allocated for communication with a base station of the cell. When there is a need for a cell change, the multiple radio resources are sequentially replaced with radio resources allocated to the terminal for communication with at least one base station having an associated cell different from the serving cell. This cell change procedure provides macro diversity without requiring the complexity of soft handover and has enhanced service coverage and handover robustness compared to hard handover.

Abstract: A station grouping mechanism has been presented for a wireless device that collects Multi-hop Relay Base Station (MR-BS) and Relay Stations (RSs) into groups according to their locations in a tree topology and assigns them with a phase. Grouping or partitioning MR-BS and RSs and assigning a distinct phase to the group prevent the MR-BS and the RSs from transmitting and receiving at the same time.

Abstract: A disclosed example method involves identifying a first logical circuit identifier for a first logical circuit in a first network. When a failure is detected in the first logical circuit, a second logical circuit identifier for a second logical circuit in a failover network separate from the first network is identified and the first logical circuit is renamed without manual intervention to identify the first logical circuit using the second logical circuit identifier. The second logical circuit is to reroute data from the first logical circuit.

Abstract: The invention discloses a method of optimizing handoff time in a wireless communication system from a first base station to a second base station through a dynamic data source control, the method comprising determining a communication delay between a network service node of the wireless communication system and the second base station; setting a scheduling delay for the second base station; determining a handoff delay based on the communication delay and the scheduling delay and indicating said handoff delay to a mobile communication device, wherein the mobile communication device performs the handoff from the first base station to the second base station on expiry of the handoff delay so determined.

Abstract: A method for efficiently scheduling virtual resource blocks to physical resource blocks is disclosed. In a wireless mobile communication system that supports a resource block group (RBG) allocation scheme, for distributed mapping of consecutively allocated virtual resource blocks to physical resource blocks, there is proposed a mapping method capable of increasing the number of distributed virtual resource blocks to a maximum while satisfying gap limitations, when the length of the physical resource blocks is different from the length of the distributed virtual resource blocks. Also, the number of distributed virtual resource blocks and the structure of an interleaver are limited for efficient scheduling.

Abstract: A system and method for topology constrained Quality of Service (QoS) provisioning between a plurality of sites in a Virtual Private Network (VPN) is disclosed. The method comprises enabling graphical definition of relationships between the plurality of sites of the VPN and enabling graphical definition of at least one QoS rule for at least one pair of sites of the plurality of sites of the VPN based at least in part on the defined relationship.

Abstract: A new frame structure applicable to the IEEE 802.16 OFDMA wireless waveform is described, for the purposes of increasing base station capacity, increasing subscriber link rates and extending base station range. The frame structure provides the necessary constructs so that advance signal processing technologies such as Stacked Carrier Spread Spectrum and adaptive antenna technology may be used in combination with these constructs in order to realize these gains. These concepts are equally applicable in other advanced wireless waveforms based on OFDM or OFDMA such as LTE or UMB.

Abstract: A method for measuring network performance is disclosed to solve the problem in active network performance measurement that a measurement point on receiving a packet is unable to determine the source of the packet after the network address translation (NAT). The method includes that a first measurement point constructs a probe packet containing address information about the first measurement point in a data field thereof based on a measurement instruction and sends the probe packet to a second measurement point via a NAT device for translating the network address, and the second measurement point receives the probe packet and determines the source of the packet according to the address information in the packet; and finally calculates network performance metrics, according to related information in the probe packet. A network system is also disclosed.