Patent application number | Description | Published |
20090074006 | METHOD AND APPARATUS FOR PROVIDING A COMMON ACKNOWLEGEMENT CHANNEL - An approach is provided for sharing a common acknowledgement channel. A coding and modulation scheme is selected, wherein the coding and modulation scheme utilizes a plurality of sub-carriers associated with a common acknowledgement channel serving a plurality of stations. A plurality of error control-enabled connections is mapped to the common acknowledgement channel by allocating a portion of the sub-carriers to one of the connections and another portion of the sub-carriers to another one of the connections. | 03-19-2009 |
20090077444 | METHOD AND APPARATUS FOR PROVIDING ACKNOWLEDGEMENT SIGNALING TO SUPPORT AN ERROR CONTROL MECHANISM - An approach is provided for acknowledgement signaling. A determination is made whether an error control mechanism is enabled for transmission of a data frame. The data frame is fragmented into a plurality of coding blocks. A frame check sequence is appended to one or more sequences of the coding blocks, wherein each of the sequences associated with the frame check sequence is to be acknowledged separately. | 03-19-2009 |
20090103561 | Cyclic bandwidth allocation method with HARQ enabled - A method is described which includes allocating transmission resources for transmitting data packets. The allocation of transmission resources includes a periodic allocation of the transmission resources that is applicable to a plurality of frames. The allocation of transmission resources includes an allocation of transmission resources for a first transmission of each HARQ process during the plurality of frames. The method includes receiving an indication of an allocation of transmission resources for data packets in a plurality of frames. Receiving and/or transmitting packets during the plurality of frames using the allocation of transmission resources is also included in the method. The frames in the plurality of frames may include a compressed MAC header. Apparatus and computer programs are also described. | 04-23-2009 |
20090135755 | Layer-1 signaling of traffic indication for power saving class of type I in WiMAX - Disclosed herein are apparatus, method, and computer program whereby a mobile station receives an indication from a base station in a physical layer field and interprets the indication for use in at least a power management function. | 05-28-2009 |
20090154412 | Enhanced dynamical fast-feedback channel allocations - A method includes allocating channels in a fast-feedback channel region for a plurality of devices, and transmitting to the plurality of devices at least one bitmap defining fast-feedback uplink channel allocations for individual ones of the plurality of devices. In one embodiment a plurality of bitmaps are transmitted, the plurality of bit maps together informing individual ones of the plurality of devices of permission to use none, one or more than one particular fast-feedback channel. In this case each bitmap includes a plurality n of bit positions corresponding to n indices, where each device is identified by an associated one of the n indices, and where a bit at an index value p in a first bitmap and a bit at the same index value p in a second bitmap, when concatenated together, equal a number of fast-feedback uplink channels that are allocated to a particular device associated with the index value p. | 06-18-2009 |
20090257343 | PERMUTING SLOTS TO LOGICAL DISTRIBUTED RESOURCE UNITS - Various example embodiments are disclosed. According to an example embodiment, a method may comprise sending, by a sending wireless station in a wireless network, data to a receiving wireless station, the data being sent via at least one logical distributed resource unit (LDRU), the LDRU including slots included in at least one physical resource unit (PRU), each of the slots included in the at least one PRU being associated with a different orthogonal frequency division multiple access (OFDMA) symbol and a different OFDMA subcarrier. | 10-15-2009 |
20090257382 | Method, apparatus and computer program for permutation and subchannelization - M physical resource blocks PRBs are allocated for localized resource allocation LRA and N-M PRBs are allocated for distributed resource allocation DRA. Each PRB has U subcarriers. Subcarriers of the N PRBs are permuted to result in N subchannels. Serially for each m | 10-15-2009 |
20090262696 | MAPPING RESOURCE BLOCKS INTO SUBCHANNELS - According to an example embodiment, a method may include determining, by a first wireless node in a wireless network, a number N of resource blocks available for transmitting data within a cell, the N resource blocks each including V resource block orthogonal frequency division multiplexing (OFDM) symbols, the V resource block OFDM symbols each including U resource block subcarriers. The method may also include mapping the N resource blocks into N subchannels based on a permutation formula, the permutation formula assigning, based on permutation parameters including the number N and a random or pseudorandom variable, U subchannel subcarriers for each of V subchannel OFDM symbols to each of the N subchannels and thereby allocating a subchannel index for each of the N subchannels. The method may also include sending a message to a second wireless node indicating the permutation parameters and the allocated subchannel index of at least one of the N subchannels for communication between the first wireless node and the second wireless node. | 10-22-2009 |
20100002641 | SUPPORT FOR BROADCAST CONTROL HEADER FOR WIRELESS NETWORKS - Various example embodiments are disclosed herein related to broadcast control headers for wireless networks. According to an example embodiment, a method may include allocating resources for a broadcast channel for a wireless network may include determining a set of physical resource units (PRUs), each PRU including a plurality of contiguous subcarriers, selecting one or more subsets of the PRUs, each subset including a plurality of PRUs distributed across the set of PRUs, and determining a plurality of logical resource units (LRUs) from each subset of PRUs, including permutating the subcarriers independently within each subset of PRUs to obtain the plurality of LRUs for each subset of PRUs, each LRU including a plurality of distributed subcarriers. | 01-07-2010 |
20100041445 | POWER SAVING SUPPORT FOR WIRELESS NETWORKS - Various example embodiments are disclosed. According to an example embodiment, a technique may include transmitting a scheduling information to a mobile station in a wireless network during a listening window, determining whether an acknowledgement has been received within the listening window from the mobile station that acknowledges receipt of the scheduling information, resetting a size of a next sleep window for the mobile station to an initial sleep window size if the acknowledgement has been received from the mobile station, and increasing a size of the next sleep window for the mobile station if the acknowledgement has not been received from the mobile station within the listening window. In another example embodiment, techniques are disclosed for determining a starting location of a next listening window for a mobile station in a wireless network. | 02-18-2010 |
20100056202 | System, Apparatus and Methods for Accelerating Initial Entry in Multi-Carrier Wireless Deployment - Systems and methods for providing an efficient network entry for a mobile station in RF communications systems with fully configured and partially configured carriers are described. A distinguishing parameter for fully configured carriers is determined. A mobile station receives a carrier and determines whether a fully configured carrier has been received. The mobile station performs synchronization with a base station using the detected fully configured carrier and completes a network entry procedure. In one method embodiment, the distinguishing parameter is a unique preamble characteristic. In another method embodiment, the fully configured carrier frequency is part of messages broadcast by both the fully configured and partially configured carriers. In yet another method embodiment, the carrier raster for fully configured carriers is distinguishable from the carrier raster for partially configured carriers. Latency is reduced for the network entry process for the mobile stations. | 03-04-2010 |
20100061311 | Opportunistic Uplink Feedback Scheme for MU-MIMO Systems - According to one general aspect, a method of using a base station comprising establishing an association between the base station and at least one mobile station (MS) via a communications channel. In such an embodiment, the communications channel may be divided into resource blocks. In various embodiments, the method may include broadcasting a signal-to-noise (SNR) threshold message that includes a SNR threshold. In some embodiments, the method may include receiving at least one reporting message, respectively from the at least one mobile station(s), indicating which resource blocks measured a SNR equal to or above the SNR threshold. In various embodiments, the method may also include allocating, in a time division multiplexing mode, resource blocks for communication with the mobile station(s) based, at least in part, upon the reporting message(s). | 03-11-2010 |
20100061327 | ACKNOWLEDGEMENT CHANNEL DESIGN FOR WIRELESS NETWORKS - Various example embodiments are disclosed. According to an example embodiment, a technique may include transmitting a message to allocate resources to a mobile station in a wireless network for an uplink acknowledgement channel, the acknowledgement channel including three subtiles including a subtile from each of three different tiles, each of the three tiles including a plurality of subtiles that includes at least one 2×3 subtile that includes two subcarriers by three Orthogonal Frequency Division Multiplexing (OFDM) symbols and at least one 3×2 subtile that includes three subcarriers by two OFDM symbols. | 03-11-2010 |
20100061346 | CHANNEL QUALITY FEEDBACK SIGNAL FOR WIRELESS NETWORKS - According to an example embodiment, a method may include broadcasting, in a downlink direction to one or more mobile stations in a wireless network, a message that includes a channel quality threshold, and receiving a signal from at least one of the one or more mobile stations, the signal being received in an uplink direction on one or more resource blocks that have a channel quality, as measured by one of the one or more mobile station in a downlink direction, that is greater than or equal to the channel quality threshold. | 03-11-2010 |
20100081454 | NEIGHBORHOOD PAGING GROUP DESIGN FOR WIRELESS NETWORKS - Various example embodiments are disclosed. According to an example embodiment, a technique may include storing, by a mobile station while in an active state, a neighborhood paging list, transitioning from active state to idle state, receiving a paging group ID from a local base station, determining that the paging group ID received from the local base station does not match any of the paging group IDs on the mobile station's neighborhood paging list, performing location update, updating the neighborhood paging list based on information received from the local base station, the updated neighborhood paging list including a paging group ID (PGID) identifying a local paging area corresponding to the local base station and a list of neighbor paging group IDs identifying one or more paging areas that are neighbors to the local paging area. | 04-01-2010 |
20100182932 | Apparatus, Method and Computer Program Product Providing Group Resource Allocation for Reducing Signaling Overhead - Exemplary embodiments of this invention provide a reduction in signaling overhead by allocating radio resources to subscriber stations (SSs) based on a group of connection identifiers (CIDs), where the group corresponds to a plurality of connections. The use of these exemplary embodiments can be particularly beneficial for certain applications, such as voice over internet protocol (VoIP) applications, by removing unnecessary signaling overhead. In one exemplary embodiment of the invention, a method includes: receiving signaling that assigns a subscriber station to a particular group of subscriber stations or that removes an already assigned subscriber station from the particular group of subscriber stations; and transmitting an acknowledgment that confirms receipt of the signaling. | 07-22-2010 |
20100214993 | APPARATUS AND METHOD FOR RESOURCE ALLOCATION FOR SOUNDING CHANNEL - In accordance with an example embodiment of the present invention, a method is disclosed that comprises receiving a resource reservation request for a sounding channel, the resource reservation request comprising a first transmission direction and a first set of logical resources; mapping the first set of logical resources to a first set of physical resources, at least in part based on the first transmission direction; and mapping the first set of physical resources to a second set of logical resources at least in part based on a second transmission direction. | 08-26-2010 |
20100220643 | Method and Apparatus for Providing Distributed Scheduling - An approach is provided for distributing scheduling information within a wireless network. A multicast group is configured to include one or more neighboring nodes of a meshed wireless network. A multicast link identifier to each link to the neighboring nodes. Scheduling information is generated for distribution to the multicast group over the corresponding links. | 09-02-2010 |
20110090879 | Method and Apparatus of Providing a Frame Structure for Supporting Different Operational Modes - An approach provides a frame structure for supporting different operational modes. A frame is generated for transmission over a network to a first device and a second device over a first bandwidth and a second bandwidth, respectively. The preamble provides synchronization for operation over the first bandwidth and the second bandwidth. | 04-21-2011 |
20110096867 | Method and Apparatus for Providing Pilot Signals in OFDM Frames - In a telecommunication network, pilot signals are provided in OFDM (orthogonal frequency division multiplexing) frames to enable the SC-FDMA (the single-carrier frequency division multiple access) concept to work with the OFDMA concept in uplink substantially harmonically, wherein each OFDM frame includes a predetermined plurality of OFDM symbols, and at least one pilot signal is placed in addition to other data and/or signals within at least one existing OFDM symbol of said predetermined plurality of OFDM symbols. | 04-28-2011 |
20110103253 | METHOD AND APPARATUS FOR PROVIDING POWER SAVING USING SUPERFRAMES - An approach is provided for providing sleep mode associated with a resource frame structure. A superframe that includes a plurality of frames that is partitioned into sub-frames is detected. A length of listening window ( | 05-05-2011 |
20120129521 | Association Level Indication to Neighboring Base Stations - It is described a method of sending an association level indication to neighboring base stations by a serving base station to indicate to the neighbor base station to report a particular ranging parameter set corresponding to the association level indication for a user equipment requesting scanning of neighbor base stations. According to an embodiment, the ranging parameters of the ranging parameter set are provided to the user equipment in single message or are provided in two or more messages, e.g. in the case of network assisted association reporting. | 05-24-2012 |
20130223390 | SUPPORT FOR BROADCAST CONTROL HEADER FOR WIRELESS NETWORKS - Various example embodiments are disclosed herein related to broadcast control headers for wireless networks. According to an example embodiment, a method may include allocating resources for a broadcast channel for a wireless network may include determining a set of physical resource units (PRUs), each PRU including a plurality of contiguous subcarriers, selecting one or more subsets of the PRUs, each subset including a plurality of PRUs distributed across the set of PRUs, and determining a plurality of logical resource units (LRUs) from each subset of PRUs, including permutating the subcarriers independently within each subset of PRUs to obtain the plurality of LRUs for each subset of PRUs, each LRU including a plurality of distributed subcarriers. | 08-29-2013 |