Patent application number | Description | Published |
20090003267 | METHOD OF COMMUNICATION SCHEDULING IN A MULTIHOP NETWORK - A method of communication scheduling in a multihop network is provided. The multihop network comprises a base station and at least one relay station. The method includes allocating a downlink relay to a relay station; assigning a first one or more connection identifiers to be locally scheduled at the relay station for communication on a first portion of the downlink relay; and assigning a second one or more connection identifiers to be centrally scheduled by the base station for communication on a second portion of the downlink relay. | 01-01-2009 |
20100284482 | METHOD AND APPARATUS FOR RADIO RESOURCE ALLOCATION IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING COMMUNICATION SYSTEM - In an OFDM communication system, wherein a frequency bandwidth is divided into multiple Physical Resource Units (PRUs), a Frequency Partitioning Configuration Module (FPCM) is provided that configures a physical layer for use in multiple coverage areas. The FPCM divides the PRUs into a first group, for frequency selective allocations, and a second group, for frequency diverse allocations. The FPCM subdivides each of the two groups into multiple sets of PRUs, maps the sets of PRUs from the first group to consecutive PRUs allocated for contiguous segment allocation (CS-PRUs), and maps the sets of PRUs from the second group to consecutive PRUs allocated for distributed segment allocation (DS-PRUs). The FPCM permutes the DS-PRUs and allocates the CS-PRUs and the permuted DS-PRUs to at least one frequency partition. | 11-11-2010 |
20100296475 | METHOD AND APPARATUS FOR DETERMINING AN APPROPRIATE LINK PATH IN A MULTI-HOP COMMUNICATION SYSTEM - A determination of link quality (C | 11-25-2010 |
20110105051 | DIFFERENTIAL CLOSED-LOOP TRANSMISSION FEEDBACK IN WIRELESS COMMUNICATION SYSTEMS - A method and apparatus for providing channel feedback is provided herein. During operation a covariance matrix at time t (R) is calculated as a function of a received downlink signal. Matrix C | 05-05-2011 |
20120147813 | CLOSED-LOOP FEEDBACK DURING INITIAL RANGING PROCEDURE - During operation, the choice of the initial ranging code (sometimes referred to as a ranging preamble code, or a random-access preamble) at the mobile station is associated with a PMI feedback to be signaled to the base station during the initial ranging. More particularly, during initial system access a ranging code is transmitted by the mobile station to the base station. The mobile station chooses one of the available ranging codes based on the channel conditions and associates the ranging code with channel feedback information. The ranging code is then transmitted to the base station, and provides the base station with the channel feedback information. | 06-14-2012 |
20130088978 | Joint Encoding of Rank and CQI Feedback For Comp - A method to reduce feedback overhead for CoMP operation is described. The method includes deriving a set of CSI for a coordinated multi-point transmission received at a UE over a plurality of radio links Each CSI of the set of CSI pertains to a radio link of the plurality of radio links. The plurality of radio links includes a first link from a serving transmission point and at least one multi-point link from at least one non-serving transmission point to the UE. The method also includes jointly encoding at least two CSI from the set of CSI. Apparatus and computer readable media are also described. | 04-11-2013 |
20130094604 | Precoding For Coordinated Multi-Point Joint Transmission - The specification and drawings present a new method, apparatus and software related product (e.g., a computer readable memory) for implementing precoding for a coordinated multi-point joint transmission in LTE wireless systems using a specific product structure for a multi-point precoding matrix with designed and/or specified usage of multi-point codebooks for generating spatial data stream between a UE having multiple antennas and a plurality of cells. | 04-18-2013 |
20130162476 | Methods, Apparatuses, And Computer-Readable Storage Media for Performing Multidimensional Beamforming - Methods, apparatuses and computer-readable storage media perform phasing of a first array including one or more antenna elements and phasing of a second array including one or more antenna elements to provide a combined radiation pattern for the first and second arrays, the first array having a first radiation pattern and the second array having a second radiation pattern, wherein the first radiation pattern is substantially orthogonal to the second radiation pattern. The combined radiation pattern is controlled in a first dimension based upon an uplink channel measurement. The combined radiation pattern is controlled in a second dimension based upon a precoding feedback from a user equipment (UE). | 06-27-2013 |
20130259151 | Codebook Feedback Method for Per-User Elevation Beamforming - A method of operating an array of antennas in a wireless communication system to provide user-specific azimuth and elevation beamforming is described. The method includes providing a product codebook structure consisting of both an azimuth and elevation portion. A receiver receives reference signals from a transmitter corresponding to both the azimuth and elevation portions of the array of antennas. The method also includes determining the index of the azimuth codebook portion of the product codebook from the azimuth portion of the received reference signals and determining the index of the elevation codebook portion of the product codebook from the elevation portion of the received reference signals. Apparatus and computer readable media are also described. | 10-03-2013 |
20130272151 | Reference Signal Design And Signaling For Per-User Elevation MIMO - A method to use RSs for per-user elevation beamforming is described. An eNB sends, to a UE, an indication of which RSs in a plurality of RSs sound in the elevation dimension and which RSs in the plurality of RSs sound in the azimuthal dimension. Then, the eNB sends to the UE, the plurality of RSs using a plurality of antenna. The UE separates the plurality of RSs into the first portion and the second portion based at least in part on the indication and sends elevation and azimuthal feedback based on the received RSs to the eNB. The eNB determines beamforming weights for the plurality of antenna based at least in part on the elevation feedback and the azimuthal feedback. Apparatus and computer readable media are also described. | 10-17-2013 |
20130279615 | DIFFERENTIAL CLOSED-LOOP TRANSMISSION FEEDBACK IN WIRELESS COMMUNICATION SYSTEMS - A method and apparatus for providing channel feedback is provided herein. During operation a covariance matrix at time t (R) is calculated as a function of a received downlink signal. Matrix C | 10-24-2013 |
20130310019 | CELL RANGE EXTENSION FOR COOPERATIVE MULTIPOINT - A user equipment UE takes measurements of at least a first and a second transmission point. The UE applies a bias value in favor of the second transmission point to at least one of the measurements, and thereafter utilizes the measurements after the bias value is applied to select a set of transmission points to recommend for cooperative multipoint CoMP transmissions. In more specific examples: the first and second transmission points are respective macro and micro/pico cells, and the UE further measures channel state information CSI from each transmission point of the selected CoMP set and reports that without applying the bias value to any of them. The examples show this approach works even if the cells share a common physical cell ID PCID. | 11-21-2013 |
20140187282 | Downlink Power Control Using Relative Load - The specification and drawings present a new method, apparatus and software related product (e.g., a computer readable memory) for a power control (e.g., at least for DL power control) in a cell using a concept of a relative load in a network such as a wireless network. The relative load may be a ratio of cell's own load relative to an average load in a cluster of neighboring cells for scaling a nominal power value (or a function of the power value). The load can be measured, for example, either as a number of UEs in the cell, a RB utilization in the cell, a DL information traffic in the cell, or any other metric that's representative of the load in the cell. The resulting computed power for a DL signaling can be either on a per cell basis or on a per UE basis. | 07-03-2014 |
20140204770 | Methods and Apparatus For Device Scheduling - Systems and techniques for crosstalk estimation. One or more user devices feed back preceding matrix indicator rank information to one or more base stations, which generated channel state information reference sources, at least one of which includes weightings based on the preceding matrix indicator rank information. One or more user devices estimates channel information based on active preceding matrix indicator information received by the base station from at least one user device. One or more user devices computes channel estimates for a desired transmission channel and one or more other potential transmission channels associated with other user devices and performs crosstalk estimation for the estimated channels. Crosstalk estimation information is fed back to a base station, which performs scheduling based at least in part on the crosstalk estimation from the one or more user devices. | 07-24-2014 |
20140355702 | Codebook Partitioning for Enabling Elevation-eICIC - A method includes receiving a number of indicators from a number of UEs. Each value of an indicator corresponds to entry(ies) of a codebook the corresponding UE recommends to be used for transmission. The method includes assigning the UE to a number of groups, including a first group of UEs having values of indicators corresponding to first codebook entries that when applied to an antenna array produce a pattern in elevation that steers a beam away from an underlying cell, and a second group of UEs having values of indicators corresponding to second codebook entries that are different from the first codebook entries. The method includes transmitting, in a first set of RBs having a first characteristic, to the UEs in the first group and transmitting, in a second set of RBs having a second, different characteristic, to the UEs in the second group. Apparatus and program products are disclosed. | 12-04-2014 |
20150063222 | COORDINATED SCHEDULING WITH ADAPTIVE MUTING - Systems, methods, apparatuses, and computer program products relating to coordinated scheduling with adaptive muting are provided. One method comprises transmitting, by a network element, calculated impact information for a cell of the network element when taking an action related to a cell of the network element and/or taking an action related to a cell of a second network element. The method may also comprise transmitting a request for taking the action related to the cell of the second network element under certain circumstances | 03-05-2015 |