Patent application number | Description | Published |
20100080160 | METHOD AND ARRANGEMENT IN A TELECOMMUNICATION SYSTEM - The present invention provides, inter alia, a method of operation of a radio base station in a wireless telecommunications system, in which system information is transmitted on a broadcast control channel. The method comprises the steps of transmitting the broadcast control channel continuously on a first carrier; and also transmitting the broadcast control channel non-continuously and periodically at regular intervals. This prevents or at least minimizes, for example, MBMS data loss when a UE with a single receiver listens to a dedicated MBMS carrier. | 04-01-2010 |
20100124206 | TIME-DIVISION MULTIPLEXED PILOT SIGNAL FOR INTEGRATED MOBILE BROADCASTS - A pilot channel signal for time-division multiplexing with one or more traffic channel signals in a broadcast/multi-cast signal and for code-division multiplexing with a continuously transmitted pilot channel signal is described. In an exemplary method for transmitting a broadcast/multicast signal, a pilot symbol sequence is obtained for each slot of one or more frames of the broadcast/multicast signal, so that the pilot symbol sequence varies for each slot of a given frame. The pilot symbol sequence for each slot is spread with a channelization code, and the spread pilot symbol sequence for each slot is scrambled, using a scrambling code, to form a first pilot channel signal. The first pilot channel signal is transmitted so that it is time-division multiplexed with one or more traffic channel signals transmitted during each slot and code-division multiplexed with a second pilot channel signal transmitted during all slots of the one or more frames. | 05-20-2010 |
20100311411 | Method and Arrangement in a Telecommunication System - A user equipment, in a cellular telecommunication system having a plurality of downlink physical channels, detects radio link problems using a subset of said physical channels, where said subset is dynamically adjustable depending upon which channels are available at a particular instant. | 12-09-2010 |
20110080838 | Methods and Arrangements in a Mobile Telecommunication Network - Methods and apparatus for distributing available transmit power in a user equipment (UE) to avoid violation of UE power limitations on a Physical Uplink Control Channel (PUCCH) and a Physical Uplink Shared Channel (PUSCH) are described. Available power for transmission on at least the PUCCH is determined and at least one power headroom report indicating available power for transmission on at least the PUCCH is transmitted to a base station. | 04-07-2011 |
20110081927 | Methods and Arrangements in a Mobile Telecommunication Network - The present invention relates to methods and arrangements for assisting a User Equipment (UE) to determine transmit power to be used on a first uplink component carrier y, wherein the base station is configured to communicate with the UE over a plurality of uplink and downlink component carriers x,y. The UE is aware of path loss parameters associated with a second downlink component carrier x. The method in a base station comprises determining cell specific path loss parameters associated with the component carriers of the base station. The cell specific path loss parameters at least comprises path loss parameters associated with the first uplink component carrier y and a second uplink component carrier x which is paired to the second downlink component carrier x, wherein the second uplink component carrier and second downlink component carrier are within one frequency band. The method comprises the further steps of calculating a pathloss offset, deltaPL(y,x), for the first uplink component carrier y, wherein the pathloss offset deltaPL(y,x) is the pathloss power offset for the first uplink component carrier y with respect to the second uplink component carrier x, and sending the calculated pathloss offset, deltaPL(y,x) to the UE. | 04-07-2011 |
20110081932 | PUCCH Resource Allocation for Carrier Aggregation in LTE-Advanced - The invention is a method and apparatus for signaling uplink control information in a mobile communication network using carrier aggregation. The signaling mechanism allows the transmission, on a single uplink component carrier, of control information associated with a downlink transmission on multiple aggregated downlink component carriers. Semi-statically reserved resources for the transmission of control information on the uplink component carrier may be dynamically shared by user terminals that are assigned multiple downlink component carriers for downlink transmissions. Implicit or explicit resource indication can be used in combination with dynamic resource indication. | 04-07-2011 |
20110211520 | HANDLING DISCONTINUOUS TRANSMISSION INDICATION BITS - Transmitter(s) ( | 09-01-2011 |
20110306340 | Cell Search and Measurement in Heterogeneous Networks - An extended cell search procedure enables more inclusive measurement reports by mobile terminals operating in a heterogeneous network. The mobile terminal may be configured to conduct an extended cell search to enable better detection of signals transmitted from weaker cells. For mobile terminal with extended cell search capabilities, the network sends an extended cell search message to the mobile terminal when there is a need for an extended cell search. In response to the extended cell search message, the mobile terminal uses an extended cell search procedure rather than the normal cell search procedure (as specified in Rel-8 of the LTE standard) when performing cell searches. | 12-15-2011 |
20110310878 | Synchronization in Heterogeneous Networks - In a mobile communication network comprising a pico base station and macro base station with overlapping coverage areas, the pico base station transmits a supplemental synchronization signal to enable synchronization when the mobile terminal is operating within a link imbalance zone. The supplemental synchronization signal is transmitted using different time, frequency, and/or code resources from the primary and/or secondary synchronization signals to differentiate and separate the supplemental synchronization signals. | 12-22-2011 |
20110312319 | Downlink Scheduling in Heterogeneous Networks - The present invention provides methods to support scheduling of transmissions from a pico base station or micro base station to a mobile terminal operating in a link imbalance zone where interference from macro base station is present. A method is provided to enable the mobile terminal to detect when it is in a link imbalance zone, and for triggering scheduling restrictions when the mobile terminal is in the link imbalance zone. | 12-22-2011 |
20110319025 | Reference Signal Interference Management in Heterogeneous Network Deployments - Methods and apparatus for enabling interference coordination in a communication network. A base station includes a plurality of antenna ports. Each antenna port is configured to transmit a reference signal, and each antenna port is associated with a respective cell. The base station determines a set of cells where transmissions of reference signals is to be performed from a reduced set of the plurality of antenna ports. The base station determines a subset of antenna ports in at least one cell of the determined set of cells to enable interference coordination in the network, and transmits the reference signal from the subset of antenna ports. | 12-29-2011 |
20120014307 | Generation of MBSFN-DOB Synchronization Codes - Physical downlink channels PPHY | 01-19-2012 |
20120020421 | Methods and Apparatus for Varying Reduced Transmission Resources - Inter-cell interference coordination across layers of a communication network can be implemented by configuring a cell to transmit one or more downlink transmission resources having variably reduced transmission activity. A transmitting node, such as a macro cell, can transmit transmission resources, such as resource elements, resource blocks, subframes, and frames, having reduced transmission activity at varying predictable times according to a selected cell activity pattern. A receiving node, such as a user equipment, can decide to make received signal measurements according to the cell activity pattern. | 01-26-2012 |
20120044818 | Adaptation of Receiver Settings in a Heterogeneous Network - Techniques are described for adapting receiver settings used by a mobile terminal operating in a heterogeneous network comprising macro cells and pico cells with overlapping coverage areas. A first set of subframes is allocated to the pico cells for downlink transmissions to a mobile terminal in a link imbalance zone. The mobile terminal acquires information about the subframe allocation and uses the subframe allocation information to select the signals used for adapting receiver settings used when operating in the link imbalance zone. | 02-23-2012 |
20120165029 | Method and Arrangement in a Telecommunication System - A method and an arrangement ( | 06-28-2012 |
20120188947 | Uplink Power Control in Wireless Communication Systems - Methods in a Long Term Evolution (LTE) base station for controlling transmit power of a User Equipment(UE) are provided. The method includes configuring UE individual power weighting factors to be used for weighting available UE transmit power between uplink component carriers and/or between Physical Uplink Control Channel (PUCCH) and Physical Uplink Shared Channel (PUSCH); and signaling the configured UE individual power weighting factors to the UE. Related methods and arrangements are also provided. | 07-26-2012 |
20120201163 | Efficient Use of Reference Signal Symbol Resources in a Hierarchical Heterogeneous Cell Deployment - Techniques for collecting channel-state-information, CSI, feedback in a wireless network that comprises a plurality of geographically separated transmission points ( | 08-09-2012 |
20120201164 | Distribution Of Cell-Common Downlink Signals In A Hierarchical Heterogeneous Cell Deployment - A high-power point ( | 08-09-2012 |
20120270594 | Synchronization of PICO-Nodes in a Heterogeneous Cellular Network Deployment - A high-power point ( | 10-25-2012 |
20130028109 | Point-Dependent Resource Symbol Configuration in a Wireless Cell - A high-power point and one or more low-power points transmit signals associated with the same cell-identifier in a heterogeneous cell deployment. Coverage areas corresponding to the low-power points fall at least partly within the coverage area for the high-power point, so that mobile stations within range of a low-power point are also within range of the high-power point. Channel-state-information reference symbols, CSI-RS, are transmitted using different CSI-RS resources on different transmission points within the cell, while configuration of CSI-RS measurement resources is conducted on a UE-specific basis. The choice of measurement resources to be used is determined by the network, based on the properties of the channels from the transmission points to the UE. As the UE moves around within the cell, the network tracks the channel properties and reconfigures the CSI-RS resources measured by the UE, to correspond to the resource of the closest transmission point or points. | 01-31-2013 |
20130128800 | TIME-DIVISION MULTIPLEXED PILOT SIGNAL FOR INTEGRATED MOBILE BROADCASTS - A pilot channel signal for time-division multiplexing with one or more traffic channel signals in a broadcast/multi-cast signal and for code-division multiplexing with a continuously transmitted pilot channel signal is described. In an exemplary method for transmitting a broadcast/multicast signal, a pilot symbol sequence is obtained for each slot of one or more frames of the broadcast/multicast signal, so that the pilot symbol sequence varies for each slot of a given frame. The pilot symbol sequence for each slot is spread with a channelization code, and the spread pilot symbol sequence for each slot is scrambled, using a scrambling code, to form a first pilot channel signal. The first pilot channel signal is transmitted so that it is time-division multiplexed with one or more traffic channel signals transmitted during each slot and code-division multiplexed with a second pilot channel signal transmitted during all slots of the one or more frames. | 05-23-2013 |
20130301456 | Reference Signal Interference Management in Heterogeneous Network Deployments - Methods and apparatus for enabling interference coordination in a communication network. A base station includes a plurality of antenna ports. Each antenna port is configured to transmit a reference signal, and each antenna port is associated with a respective cell. The base station determines a set of cells where transmissions of reference signals is to be performed from a reduced set of the plurality of antenna ports. The base station determines a subset of antenna ports in at least one cell of the determined set of cells to enable interference coordination in the network, and transmits the reference signal from the subset of antenna ports. | 11-14-2013 |
20140056244 | A Node and Method for Downlink Communications Scheduling - Example embodiments presented herein are directed towards a base station ( | 02-27-2014 |
20140086166 | METHODS AND ARRANGEMENTS IN A WIRELESS COMMUNICATION SYSTEM - An object of some embodiments is to enable more dynamic and flexible transmission of reduced-power subframes. Particular embodiments provide a method in a network node. The method comprises transmitting a downlink scheduling assignment for a subframe to a wireless terminal. The scheduling assignment is comprised in control information. The control information further comprises an indication of a power offset that is or will be used for data transmission in the subframe relative to reference signal transmission. | 03-27-2014 |
20140086188 | Methods and Devices for Transmission of Control Data to a User Equipment - A method for transmission of control data to a user equipment in a mobile telecommunication system, wherein the method comprises sending control data to the user equipment in a data transmission, and performing, by the user equipment, a blind decoding of transmission elements within the data transmission in order to detect the control data in a data region in the data transmission. | 03-27-2014 |
20140086203 | Methods and Arrangements for Transmitting and Receiving Sub-Frame Specific Power Offset Information - In one embodiment, a method in a network node is provided. The network node is configured to use a first power level for transmitting data in subframes of a first type, and to use a second power level for transmitting data in subframes of a second type. The method comprises signaling ( | 03-27-2014 |
20140112252 | Search Area Based Control Channel Monitoring - According to an embodiment of the invention, a method of operating a control node for communication with at least one receiving node is provided. The communication is structured in frames comprising several subframes ( | 04-24-2014 |
20140135018 | METHOD AND DEVICE FOR PERFORMING AN ACCESS REQUEST BY A USER EQUIPMENT - A method, User Equipment (UE), and first base station serving a first cell for performing an access request by the UE for operatively connecting the UE to a second cell. The UE obtains radio quality parameters indicating quality of radio reception between the UE and the first and second cells. Based on the obtained radio quality parameters, it is determined whether the UE is in a link imbalance zone where the UE has an option to be connected to both the first cell and the second cell. If so, the UE sends access request information, to the first base station and indicates availability of the UE to be redirected to the second cell. The first base station may redirect the UE to the second cell when a load of the first cell meets pre-defined load criteria. | 05-15-2014 |
20140233457 | SYSTEMS AND METHODS OF TRIGGERING INTERFERENCE MITIGATION WITHOUT RESOURCE PARTITIONING - Systems and methods for triggering interference mitigation at a wireless device in a cellular communications network are disclosed. In one embodiment, a node associated with a cellular communications network makes a determination to trigger interference mitigation at a wireless device based on a signal load in at least one interfering cell from which transmissions result in interference at the wireless device during reception from a desired cell, a relation between reference signals used in the desired cell and the at least one interfering cell, and a timing relation between at least one of a group consisting of: signals transmitted by the desired cell and the at least one interfering cell and signals received at the wireless device from the desired cell and the at least one interfering cell. In response to making the determination, the node triggers interference mitigation at the wireless device. | 08-21-2014 |
20140328328 | Downlink Scheduling in Heterogeneous Networks - The present invention provides methods to support scheduling of transmissions from a pico base station or micro base station to a mobile terminal operating in a link imbalance zone where interference from macro base station is present. A method is provided to enable the mobile terminal to detect when it is in a link imbalance zone, and for triggering scheduling restrictions when the mobile terminal is in the link imbalance zone. | 11-06-2014 |
20150031358 | Cell Search and Measurement in Heterogeneous Networks - An extended cell search procedure enables more inclusive measurement reports by mobile terminals operating in a heterogeneous network. The mobile terminal may be configured to conduct an extended cell search to enable better detection of signals transmitted from weaker cells. For mobile terminal with extended cell search capabilities, the network sends an extended cell search message to the mobile terminal when there is a need for an extended cell search. In response to the extended cell search message, the mobile terminal uses an extended cell search procedure rather than the normal cell search procedure (as specified in Rel-8 of the LTE standard) when performing cell searches. | 01-29-2015 |
20150031369 | METHODS AND APPARATUS FOR HETERGENEOUS NETWORK HANDOVER - A first base station provides radio communication service to user equipments, UEs, and a second base station that provides radio communication service to UEs in adjacent cell service area. The first base station receives cell range expansion, CRE, information from the second base station for expanding the size of the first cell and evaluates handover of one or more UEs with respect to the second cell based on the CRE information. In one embodiment, the second base station determines a CRE related configuration that includes the CRE information with respect to the first cell, sends the CRE information to the first base station. For example, the second base station may send a handover request including the CRE information to the first base station. The second base station also may consider CRE information in handover evaluation. | 01-29-2015 |
20150049717 | Method and Arrangement in a Telecommunication System - A method and an arrangement ( | 02-19-2015 |