Abstract: Disclosed are a method and an apparatus for uplink transmission. A method for uplink transmission for a machine-type communication (MTC) terminal comprises: a step of transmitting first uplink (UL) information via a first UL channel in a first terminal-specific frequency band of a first subframe; and a step of transmitting second UL information via a second UL channel in a second terminal-specific frequency band of a second subframe subsequent to the first subframe. The first subframe and the second subframe each include a plurality of orthogonal frequency division multiplexing (OFDM) symbols. If the first terminal-specific frequency band and the second terminal-specific frequency band do not overlap one another, the second UL information may not be transmitted in a first OFDM symbol of the second subframe. Thus, a wireless resource can be efficiently utilized.

Abstract: In one example, a network device determines a set of candidate loop-free alternate (LFA) next hops for forwarding network traffic from the network device to a multi-homed network by taking into account a first cost associated with a second path from a first border router to the multi-homed network and a second cost associated with a second border router to the multi-homed network, wherein the multi-homed network is external to an interior routing domain in which the network device is located. The network device selects an LFA next hop from the set of candidate LFA next hops, to be stored as an alternate next hop for forwarding network traffic to the multi-homed network, and updates forwarding information stored by the network device to install the selected LFA next hop as the alternate next hop for forwarding network traffic from the network device to the multi-horned network.

Abstract: A Continuity Check (CC) protocol optimization method in a switch includes operating a plurality of CC sessions with a peer switch, wherein, for CC intervals, N sessions of the plurality CC sessions are set to a short interval and M sessions of the plurality of CC sessions are set to a long interval, wherein N and M are integers; switching a first session of the N sessions with a second session of the M sessions based on one of a fault and user provisioning; and exchanging the CC intervals between the first session and the second session subsequent to the switching.

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus determines an observed bit rate based on uplink transmissions of the UE, estimates an available link capacity for the UE, selects an estimate factor, and estimates available uplink throughput for future uplink transmissions of the UE as a function of the observed bit rate, the estimated available link capacity, and the estimate factor.

Abstract: The present invention relates to management of wireless communication networks and, more particularly, to methods, apparatuses and systems for spectrum management, load balancing and problematic station detection featuring problematic station detection algorithms based on calculating the amount of time a station is wasting, the location of stations, the RSSI of stations and other considerations. The present invention further includes solutions for optimizing wireless network management.

Abstract: A method and apparatus for controlling transmit power of a User Equipment (UE) in a mobile communication system is provided. The transmit power control method of the present invention includes determining, when the terminal's required transmit power exceeds the terminal's maximum transmit power, whether a plurality of Hybrid Automatic Repeat reQuest (HARQ) processes are running and reducing, when the plurality of HARQ processes are running, a transmit power of at least one of the plurality of HARQ processes which has not experienced transmit power reduction previously. The UE transmit power control method and apparatus of the present invention is advantageous to control the transmit power in transmit power reduction mode.

Abstract: Defined are timings at which a user equipment transmits uplink signals to a plurality of base stations in a wireless communication system to which a coordinated multipoint (CoMP) technology is applied. Specifically, a method of controlling uplink signal transmission timings to prevent collision between timings in transmission of uplink signals to the base stations is disclosed.

Abstract: A method for reducing power consumption in connected mode discontinuous reception is disclosed. The method can include a wireless communication device sending a transmission for a pending HARQ retransmission process and receiving an ACK for the transmission. The method can further include the wireless communication device determining a subset of remaining uplink transmission opportunities in the pending HARQ retransmission process to monitor for an uplink grant in response to receiving the ACK and monitoring the subset of remaining uplink transmission opportunities for an uplink grant.

Abstract: A method of obtaining system frame number for handover is provided. A UE receives a handover command from a serving base station in a serving cell. The UE performs downlink synchronization with a target base station. Upon synchronization, the UE determines a radio frame boundary of a target cell. The UE then obtains a system frame number of the target cell based on the radio frame boundary. The UE performs a handover procedure with the target cell by transmitting a RACH preamble to the target base station. The RACH preamble is transmitted over a PRACH resource determined from the system frame number without reading SFN information from a PBCH/BCH broadcasted from the target base station. Finally, the UE establishes data connection with the target base station. Handover interruption time is reduced by obtaining SFN before PBCH reading and decoding.

Abstract: Systems and methods are described for predictive delaycast feedback in relation to content object queuing and offer and request handling via communications systems. When a subscriber of communications and/or media services requests access to a content object, embodiments can determine where the content object can and/or should be placed in a delaycast queue. The queue can include multiple regions associated with different estimated delivery timeframes. The placement determination can involve determining an appropriate queue location for the requested content object (e.g., an appropriate queue region), and determining an associated promise time for the requested object.

Abstract: A system and method for wireless BANs and short-range wireless networks that support heterogeneous devices and applications are disclosed. In one example embodiment, a method of implementing a MAC superframe structure for short-range wireless networks includes transmitting multiple beacon slots (102) during a beacon period (404) wherein the multiple beacon slots (102) include one or more simplified beacon slots associated with one or more simple devices (102), and transmitting payload data during a data transfer period (410) substantially following the beacon period (404) and wherein the data transfer period (410) includes one or more RCA periods (412) associated with the one or more simple devices (102) for transmitting and/or receiving the payload data associated with the one or more simple devices (102) upon receipt of the indication that the RCA period (412) is present in the one or more simplified beacon slots associated with the simple devices (102).

Abstract: In one embodiment, an apparatus includes a buffer memory, at least one ingress port, at least one egress port, at least one processor, and logic integrated with and/or executable by the at least one processor, the logic being configured to communicate with a software-defined network (SDN) controller, store one or more look-up tables in a first portion of the buffer memory, receive a packet using an ingress port, and determine an egress port for the packet. In another embodiment, a method for switching packets in a SDN includes storing one or more took-up tables in a first portion of a buffer memory of a SDN-capable switching device, receiving a packet using an ingress port of the switching device, and determining an egress port for the packet.

Abstract: A wireless communication device in a data collection system starts measuring a time when the wireless communication device receives a wireless signal from a data collection device. The wireless communication device changes the wireless channel, transmits a detection signal for detecting the data collection device, and starts measuring a time after transmitting the detection signal when the wireless communication device is unable to receive a next wireless signal from the data collection device even after passage of a predetermined time since the wireless communication device has previously received the wireless signal. The wireless communication device changes the wireless channel to be used, depending on whether the wireless communication device has received a response signal from the data collection device in response to the detection signal within a predetermined time.

Abstract: Methods, apparatus and computer program products are provided for defining the HARQ functionality for primary and secondary cells having different TDD UL/DL subframe configurations so as to reduce or eliminate instances in which the feedback is blocked and the UL grant is missed. For example, a method is provided that includes providing for communications via a primary cell and at least one secondary cell in a time division duplex (TDD) network that supports carrier aggregation in accordance with different TDD uplink (UL)/downlink (DL) subframe configurations. In this example, the method also defines at least one of: (i) UL or DL hybrid automatic repeat request (HARQ) timing, (ii) a maximum number of DL HARQ processes, (iii) a number of UL HARQ processes or (iv) an UL HARQ process mapping to be the same for each of the primary and secondary cells having different TDD UL/DL subframe configurations.

Abstract: A diplexer, for coupling a first radio frequency (RF) signal corresponding to a first carrier frequency and a second RF signal corresponding to a second carrier frequency is disclosed. The diplexer includes a first port arranged to couple the first RF signal; a second port arranged to couple the second RF signal; a third port capable of connecting an antenna; a first impedance unit coupled to the first port and the third port; and a second impedance unit coupled to the second port and the third port; wherein the first port, the second port and the third port are coupled to a direct current (DC) ground; wherein the first impedance unit is arranged to provide an first open-circuit impedance against the second RF signal, and the second impedance unit is arranged to provide a second open-circuit impedance against the first RF signal.

Abstract: In one example embodiment, a method to detect suboptimal boundary clocks is described for a node in a communications network. The method can include determining a benchmark value for a clock in a node; generating a plurality of time correction parameters associated with a plurality of time corrections for the clock; determining whether the plurality of time correction parameters meets a predetermined criteria based on the benchmark value; and generating an alert if the plurality of time correction parameters meets the predetermined criteria.

Abstract: The packet processing method includes receiving a first packet, selecting a first storage area from a plurality of storage areas included in a buffer as a packet storage area in accordance with first time at which the first packet is received, and storing the first packet into the selected first storage area. The first storage area is selected as the packet storage area for the other packets received when a predetermined time period has passed from the first time.

Abstract: Controlling performance in a Time Division Duplex (TDD) radio node is provided. The TDD radio node having multiple parallel branches and antennas for radio transmission of signals propagating through a transmit chain in each of the branches before emission from the antennas. A signal generator generates a signal that propagates through each branch. A signal tapper taps the signal from each of the branches after the transmit chain. A control unit determines a timing of the tapped signal from each of the branches, and monitors timing alignment of the branches based on the determined timing of tapped signals. If it is discovered that there is a timing misalignment between the branches that exceeds a preset acceptable limit, a transmission delay can be adjusted for at least one of the branches to reduce the misalignment.

Abstract: An apparatus, system and method are disclosed for a destination cached routing protocol for data transmission among a plurality of nodes in a mobile ad hoc network. When a routing request is received, an intermediate node transmits a received routing request message to neighboring nodes, and appends its address to and forwards the routing request packet only to other nodes from which a received routing request message was not received during a first predetermined period of time. When a route reply packet is received, the designated data transmission route is stored in memory as a cached data transmission route to the destination node, and a cached route message is transmitted to neighboring nodes, which also store the data transmission route. Upon a link failure, alternative data transmission routes are stored in memory and may be utilized to continue data transmission without additional route discovery.

Abstract: Wireless device information comprising a power level of a successful access probe sent by wireless devices to an access node and a location of each of the wireless devices relative to the access node is acquired. Based on the wireless device information, a first access probe power level is determined. The determined first access probe power level is provided to a new wireless device and an access probe is received from the new wireless device using the first access probe power level.