Patent application number | Description | Published |
20090086837 | Interfering stream identification in wireless communication systems - An exemplary embodiment in accordance with this invention is a method for determining the number of interfering streams. The method includes calculating statistical information based on one or more received OFDM signals. The number of interfering streams is estimated from the statistical information in this method. The OFDM signal(s) are received via a plurality of antennas. Storing the OFDM signal(s) in a square matrix may be included in the method. A covariance matrix of the square matrix can be determined; and a noise subspace and a signal plus interference subspace can be determined based on a SVD of the covariance matrix. The statistical information may be based on the signal plus interference subspace. Apparatus, computer programs and computer-readable media are also disclosed. | 04-02-2009 |
20090303896 | METHOD AND APPARATUS FOR PROVIDING RANDOM ACCESS WINDOW CONFIGURATION - An approach is provided for providing random access window configuration by estimating a processing time margin for processing random access preambles received in one or more random access channels. The estimated processing time margin is then used to offset the respective random access window configuration. | 12-10-2009 |
20100037114 | Discontinuous reception retransmission timer and method - A method includes, in response to a discontinuous reception (DRX) cycle being configured, and in response to a hybrid automatic repeat request round trip time (HARQ RTT) timer for an associated one of n hybrid automatic repeat request processes expiring in a current subframe when data in a corresponding hybrid automatic repeat request buffer is not successfully decoded, determining if a single discontinuous reception retransmission timer has been started. The single discontinuous reception retransmission timer is associated with all n of the hybrid automatic repeat request processes, where n is an integer equal to one or more than one. The method further includes, if the single discontinuous reception retransmission timer has not been started, starting the single discontinuous reception retransmission timer and setting an associated expiry value to a basic value. The method further includes, if the single discontinuous reception retransmission timer has been started, updating the expiry value by adding an increment value. | 02-11-2010 |
20100113051 | Random Access Preamble Transmission Design With Multiple Available Random Access Channel Resources - A method for use of a RA preamble with multiple available RACH resources is described. The method includes allocating resources including a plurality of RACH resources for a UE. Information that indicates a dedicated preamble and the allocated resources is sent to the UE. The UE receives the information. A response including the dedicated preamble is generated at the UE. The method also includes the UE sending the response over at least two of the allocated resources. In response to receiving at least one response, a message is transmitted to the UE. Apparatus and computer readable media are also described | 05-06-2010 |
20100246697 | Apparatus, Method and Computer Program Product Providing Feedback for Closed-Loop Wideband MIMO-OFDM System - In one exemplary aspect thereof the embodiments of this invention provide an apparatus that includes a wireless receiver configurable to receive resource units; a wireless transmitter configurable to transmit feedback information to a source of the received resource units; and a channel estimator and feedback generator coupled to the wireless receiver and to the wireless transmitter. The channel estimator and feedback generator is configurable to determine a weight for each of a first resource unit and a second resource unit that are received by the receiver spaced apart at least in frequency, to determine a weight for at least some of a plurality of resource units that are intermediate at least in frequency to the first and the second resource units, and to send feedback via the transmitter. The feedback includes an indication of the determined weight for the first and the second resource units using X bits for representing each of the indications of the determined weights, and further includes an indication of weights for each of the plurality of resource units using Y bits, where Y09-30-2010 | |
20110134862 | METHOD AND APPARATUS FOR PERFORMING RANDOM ACCESS PROCEDURE USING SOFT DEDICATED PREAMBLES - An approach for performing a random access procedure using soft-dedicated preambles is disclosed. A module designates one of a plurality of preambles, associated with one or more random access channels, as a soft-dedicated preamble. The soft-dedicated preamble is used by a user equipment that is either contention-based or non-contention-based. | 06-09-2011 |
20110267957 | Discontinuous Reception in Carrier Aggregation Wireless Communication Systems - A communication system is presented, which is capable of sending a transmission over an interface having at least two aggregated component carriers including a primary component carrier and at least one secondary component carrier, wherein the primary component carrier has a physical downlink control channel (PDCCH) associated therewith and wherein the PDCCH is capable of signaling allocations for the primary component carrier and the at least one secondary component carrier. A method of operating a network element including sending to a user equipment a transmission indication indicative of the transmission in the PDCCH of the primary component carrier. A method of operating a user equipment includes monitoring downlink control signaling for a transmission indication indicative of a transmission to the user equipment only on the PDCCH of the primary component carrier. | 11-03-2011 |
20120093071 | Network Element for Changing the Timeslot Type According to the received Information - It is described a mobile network, in particular an LTE network, including a relay node and a base station. The relay node is adapted for receiving signals from the base station during timeslots of a first type and for transmitting signals to a connected user equipment during timeslots of a second type differing from the first type of timeslots. The base station is adapted for transmitting signals to the relay node during timeslots of the first type and for sending information to the relay node indicating a change of the timeslot type. The relay node is further adapted for changing the timeslot type according to the received information. | 04-19-2012 |
20120220214 | METHOD AND APPARATUS FOR PROVISION OF PAGING MESSAGES IN RELAY NETWORK - Provided are a method and apparatus for the provision of paging messages in a wireless network which includes relays. The method comprises that a base station receives a paging message and transmits the paging message to at least one relay node with or without processing, and the at least one relay node transmits the paging message to a user equipment with or without modification. | 08-30-2012 |
20130100835 | Carrier Selection and/or Reselection - The invention relates to an apparatus including at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code con-figured to, with the at least one processor, cause the apparatus at least to: search for feasible component carriers by measurements, and if at least one feasible component carrier is found, take it into use; select at least one home node for negotiations for obtaining resources, the selection being based on the measurements, and negotiate for obtaining resources, if no feasible component carriers are found; take into use at least one feasible component carrier obtained based on the negotiations, if at least one feasible component carrier is obtained; and take into use at least one component carrier which is closest feasible, if no feasible component carriers are obtained. | 04-25-2013 |
20130237268 | Allocation of Resources in a Communication System - A method and an apparatus for resource allocation in a local wireless node of a system of a plurality of local wireless nodes is disclosed. An inner circle subgradient resource allocation iteration is performed based on information received from at least one other wireless node of the system and an iteration parameter until a convergent result. An updated iteration parameter is provided by of at least one outer circle subgradient iteration based on the convergent result of the inner circle subgradient resource allocation iteration. The inner circle subgradient resource allocation iteration is then repeated at least once using the updated iteration parameter until a convergent result. Resources are then allocated based on the iterations. | 09-12-2013 |
20130343324 | Carrier Aggregation in a Communication System - The disclosure relates to use of carriers for aggregation in a wireless system. A set of carriers available for use in carrier aggregation is first determined. It is then determined if at least one carrier of the set of carriers can become unavailable for use by a communication device. An indication of a configuration type of the at least one carrier is sent to the communication device, the configuration type being indicative of different behavior during a period. The at least one carrier is maintained in the set of carriers during said period. The communication device receives the indication. If a change in the availability state of the at least one carrier is determined, the communication is operated, device in relation to the at least one carrier, according to the availability state and the received indication during said period. | 12-26-2013 |
20140036714 | NODEB Self-Tuning - It is provided an apparatus, including base station means to provide a base station functionality using component carriers; neighbor detecting means to detect a neighboring base station; informing means to inform a coordinating device about the neighboring base station; willingness setting means to set a willingness to perform self-tuning based on a respective long-term priority for each component carrier, wherein the long-term priorities are received from the coordinating device, and the willingness is only set if the long-term priorities are not in contradiction to an actual requirement, willingness providing means to provide an indication of the willingness to the coordinating device; and self-tuning means to perform self-tuning if an agreement statement is received from the coordinating device, wherein, as a result of the self-tuning, a usage of each component carrier by the base station means is based on the received long-term information and the actual requirement. | 02-06-2014 |
20140204791 | Mechanisms to Facilitate a Telecommunication System to Make Use of Bands which are Not-Licensed to the Telecommunication System - The present invention addresses a method, including configuring a remote device (UE) for measurements of at least one carrier in a first frequency band which is different from a second frequency band which is licensed used for communication by said remote device, receiving a measurement report from said remote device, and deciding on the usability of the at least one measured carrier in said first frequency band for communication by said remote device. Also, a method is proposed, including measuring at least one carrier in a first frequency band which is different from a second frequency band which is licensed used for communication by a remote device, and sending, to a network transceiver device, a measurement report of the measurements. Likewise, corresponding computer program products as well as correspondingly configured devices are addressed | 07-24-2014 |
20140269570 | Random Access Preamble Transmission Design With Multiple Available Random Access Channel Resources - A method for use of a RA preamble with multiple available RACH resources is described. The method includes allocating resources including a plurality of RACH resources for a UE. Information that indicates a dedicated preamble and the allocated resources is sent to the UE. The UE receives the information. A response including the dedicated preamble is generated at the UE. The method also includes the UE sending the response over at least two of the allocated resources. In response to receiving at least one response, a message is transmitted to the UE. Apparatus and computer readable media are also described. | 09-18-2014 |
20140328311 | ASSIGNING FREQUENCY BANDS FROM A GROUP OF FREQUENCY BANDS TO A WIRELESS NETWORK SYSTEM - A method for assigning frequency bands from a group of frequency bands, the method comprising determining a quality of service being required by the wireless network system, comparing the required quality of service with the predefined categories of the plurality of groups of frequency bands, selecting a group of frequency bands based on the comparison, and assigning at least one band from the selected group of frequency bands to the wireless network system, for communication between the at least one base station and the at least one user equipment. | 11-06-2014 |
20140357273 | MOBILITY CONTROL IN A COMMUNICATION SYSTEM - The disclosure relates to generation of mobility information. A mobile device can determine, based on measurements, at least one parameter relating to its movement relative to a cell. A weighting of a counter output for use in estimation of a mobility state of the mobile device is determined. The determining includes comparison of the at least one parameter to at least one threshold. Information about the weighting can be provided by a network element. When the network element obtains the weighted estimation it can take it into account in mobility control of the mobile device. | 12-04-2014 |
20140357274 | CELL HANDOVERS - A technique includes: comparing (a) measurements made at the first access node of transmissions made by a plurality of other access nodes against (b) measurements made at the communication device of transmissions made by said plurality of other access nodes; and deciding whether or not to select said first access node as a handover candidate for said communication device based at least partly on the result of said comparison. | 12-04-2014 |
20150078274 | SPECTRUM ALLOCATION METHOD - A spectrum allocation method for a cellular network is presented. The method includes: abstracting a cellular network into an interference pattern using a graph theory-based spectrum distribution model; a network node establishing a stakeholder list to represent whether a spectrum can be shared with other network nodes; by obtaining stakeholder lists from other network nodes, calculating a fairness coefficient and determining a lower bound value for the number of spectrum resources which are used; meanwhile, each network node sending out a value related to the fairness coefficient, thereby enables calculate an upper bound value for the number of resources which can be obtained according to the obtained information, to effectively compete for free resources. Through the method of the invention, a network node can autonomously select spectrum resources, fully and effectively achieve spectrum resource allocation fairness and global network fairness, and increase the system throughput and the edge user throughput. | 03-19-2015 |