TELEFONAKTIEBOLAGET L M ERICSSSON (PUBL) Patent applications |
Patent application number | Title | Published |
20140362794 | Contention-Free Random Access Procedure in Wireless Networks - In order to provide a more robust contention-free random access procedure for use in a cellular wireless network and specifically, a contention-free random access procedure that is able to recover more quickly in case of failure a method for a radio access node ( | 12-11-2014 |
20140169166 | PACKET TRAIN GENERATION FOR ESTIMATING AVAILABLE NETWORK BANDWIDTH - Aspects of a high-precision packet train generation process are distributed among several distinct processing elements. In some embodiments a control processor configures a packet-processing unit with a packet train context that includes details such as the number of packets to be generated and the headers to be included in the packets. The packet-processing unit takes a packet to be used in the packet train and recirculates it a number of times, as specified by the packet train context. The recirculated packets, with the appropriate headers inserted, are forwarded to a traffic-shaping queue in queuing hardware. The traffic-shaping queue is configured to output the forwarded packets with a constant inter-packet gap. Thus, the generation of the multiple packets in the packet train is handled by the packet-processing unit, while the precise inter-packet timing is provided by the traffic-shaping queue in the queuing hardware. | 06-19-2014 |
20140092719 | RADIO TRANSCEIVER ON A CHIP - An entire radio transceiver can be compeltely integrated into one IC chip. In order to integrate the IF filters on the chip, directly modulated VCO is used for both up-conversion during transmission, and down-conversion during reception. Bond-wise are used as resonators in the oscillator tank for the VCO. A TDD scheme is used in the air interface to eliminate cross-talk or leakage. A Gaussian-shaped binary FSK modulation scheme is used to provide a number of other implementation advantages. | 04-03-2014 |
20120028595 | Radio Transceiver on a Chip - An entire radio transceiver can be completely integrated into one IC chip. In order to integrate the IF filters on the chip, a heterodyne architecture with a low IF is used. A single, directly modulated VCO is used for both up-conversion during transmission, and down-conversion during reception. Bond-wires are used as resonators in the oscillator tank for the VCO. A TDD scheme is used in the air interface to eliminate cross-talk or leakage. A Gaussian-shaped binary FSK modulation scheme is used to provide a number of other implementation advantages. | 02-02-2012 |
20110134808 | Systems and Methods for Media Distribution - Systems and methods according to these exemplary embodiments provide for methods and systems for optimizing the distribution of media content for multiple end users over Internet protocol (IP) networks, such as the Internet. | 06-09-2011 |
20110124360 | Methods and Arrangements in a Mobile Telecommunications Network - The present invention relates to method and arrangements for using an identifier of a predefined type, e.g. an RNTI identifying one configuration on an out-band control channel for activating the configuration identifiable by that identifier. The identifier is sent from the network to the UE, when a configuration corresponding to that identifier is to be activated. This implies that both the UE and the radio base station comprise a mapping between each configuration and the corresponding identity of each configuration. | 05-26-2011 |
20110010751 | Systems and Methods for Self-Organizing Networks Using Dynamic Policies and Situation Semantics - Communication nodes, systems and methods are described which manage and process management information using dynamic semantic variable entities governed by a formal logic and upon which computations can be performed. Such semantic variable entities include, for example, management infons and or management situations which can be used, for example, to manage policy enforcement in communication networks. Action logic is amalgamated with static situation semantics to enable dynamic policy enforcement in such networks. | 01-13-2011 |
20110004775 | Methods and Systems for Use-Case Aware Voltage Selection - Systems and methods according to these exemplary embodiments provide for optimizing voltage use in digital circuits. This can be obtained by creating situations for digital circuits such that the effective critical path (ECP) can be used such as, for example, the case where a digital circuit includes a plurality of voltage domains powered by individual and possibly different voltage sources. This can then reduce voltage use in digital circuits. | 01-06-2011 |
20100330999 | Handover Support in Radio Communications - User equipment is to be handed over from a source cell to a target cell in a radio communication network. The user equipment is assigned dedicated uplink resources in the source cell, and a handover candidate cell is prepared for receiving the user equipment by obtaining information about the assigned dedicated uplink resources in the source cell. A radio base station for the handover candidate cell is listening for user equipment transmissions and determines, when receiving a user equipment transmission, whether the received user equipment transmission can be detected based on information about the assigned dedicated uplink resources in the source cell in order to assess if the received user equipment transmission is coming from user equipment for which the handover candidate cell has been prepared. The radio base station for the handover candidate cell initiates a handover procedure for the user equipment if it is assessed that the received user equipment transmission is coming from user equipment for which the handover candidate cell has been prepared. In this way, handover can be initiated and completed even if the serving radio base station of the source cell cannot receive a handover-triggering measurement report from the UE. | 12-30-2010 |
20100303007 | Technique for Performing GSM/WCDMA Circuit Switched Services Over a Long Term Evolution Radio Access - A method of performing CS (Circuit Switched) services over a LTE (Long Term Evolution) access comprises: performing CM (Connection Management) procedures via an AGW (Access Gateway); and performing MM (Mobility Management) procedures via a MME (Mobility Management Entity). | 12-02-2010 |
20100298021 | Method and Apparatus for Uplink Power Control During Soft Handover - The present invention provides a solution for maintaining a reliable power control in a telecommunications network during soft handover between a serving and non serving base station when a dedicated physical control channel power is boosted due to an increased data rate. | 11-25-2010 |
20100279729 | Zero-Forcing Linear Beamforming for Coordinated Cellular Networks with Distributed Antennas - In a distributed antenna system that includes a plurality of transmitters and a controller, a method, performed by the controller, may be characterized by performing dirty-paper coding on downlink transmissions to users based on an order of the users, calculating beamforming vectors to provide that each of the downlink transmissions associated with each of the users does not interfere with other users, and maximizing, based on the calculated beamforming vectors, a data rate subject to a power constraint of the distributed antenna system. | 11-04-2010 |
20100254277 | Method and Arrangement in a Telecommunication System - There is provided a method of determining latency in a remote network element of a telecommunications network. In one embodiment, the method comprises receiving a message at a network element, the message comprising a time stamp of the time at which it was sent from a source network element. On receiving the message, the network element obtains another time stamp, and so may determine the time for the message to be sent between the network elements. In further embodiments, a source network element may gain an implicit indication of the workload of the remote network element by sending a first message to the remote network element and determining a length of time before the remote network element sends a second message back to the source network element. | 10-07-2010 |
20100223098 | Method and Apparatus for Providing Services to Client Groups in a Communication Network - A method and apparatus for offering or providing a service to multiple clients in a communication network. A service provisioning unit creates a group profile with common characteristics for a group of clients, e.g. based on user profiles stored in a profile database. A service is then composed that is adapted to the group profile and relevant for the common characteristics in the group profile. A service trigger condition is also defined for the adapted service which controls when the service is to be offered or provided. The service provisioning unit finally offers or provides the adapted service to the client group when it is detected that the service trigger condition is fulfilled. | 09-02-2010 |
20100222008 | Method and Arrangements for Communication of Channel Quality Information in a Telecommunications System - The present invention relates to a mobile terminal device, a base station and a method that make it possible to use a channel quality indicator, CQI, reporting format for CQI reporting from the mobile terminal device to the base station, which CQI reporting format depends on a selected transmit antenna configuration. The mobile terminal device is arranged to receive a signal from a number of transmit antennas, which signal includes a number of subcarriers, and to determine the CQI, reporting format for a collection of the subcarriers based on the selected transmit antenna configuration. The mobile terminal device is further arranged to determine a number of CQI values relating to said subcarriers in accordance with the determined CQI reporting format and to transmit the CQI values to the base station in a feedback signal. The CQI reporting format is adapted to the selected transmit antenna configuration such that the granularity of CQI reporting depends on the selected transmit antenna configuration. | 09-02-2010 |
20100217877 | Method and System for Enabling Access Policy and Charging Control - The present invention relates in general to a method and apparatus concerning access policy and charging control. In particular it relates to enhanced service information for access policy and charging control. A media stream management of a service session between a first and a second electronic communication device comprise obtaining identity address data related to the first electronic communication device step, obtaining policy information associated with the second electronic communication device step, and performing a media stream management control step involving the identity address data related to the first electronic communication device and the policy information related to the second electronic communication device such that media streams between the first electronic communication device and the second electronic communication device can be controlled. | 08-26-2010 |
20100216471 | Link Layer Control Protocol Implementation - A radio base station suitable for performing a handover operation for a LTE-variant of a radio access network comprises a transceiver and a status report requester. The transceiver is configured to facilitate wireless transmission between the radio base station and a wireless terminal over an air interface, including transmission of a radio link bearer for the connection over a downlink from the radio base station to the wireless terminal. The status report requester is configured to determine, according to one or more pre-defined criteria, whether to request from the wireless terminal a status report for a radio bearer prior to the radio base station transferring user data for the connection to another radio base station in conjunction with a handover. | 08-26-2010 |
20100195622 | Method of Maintaining Broadcast Service Continuity - An access node in the boundary area of a single frequency network service area transmits a boundary indication to the mobile terminals in the boundary area to notify the mobile terminals that they are approaching the boundaries of the single frequency network. The mobile terminals receiving the boundary indications may then take steps to maintain continuity of broadcast services when the mobile terminals leave the service area of the single frequency network. | 08-05-2010 |
20100159970 | Method for Fast Acknowledgement and Identification of a Service Access Request Message or a Preamble Thereof - A method is provided in a base station for handling a request from a first user equipment for accessing a service in a radio communications network. The method comprises the steps of receiving a first time interval of an incoming signal comprises a first signal sent from the first user equipment and a second signal sent from the second user equipment, interpreting the first signal as being a possible service access request message preamble, and sending an acknowledgement, that the preamble is detected, to the first user equipment. The method comprises the further steps of delaying the first time interval of the incoming signal, identifying the second signal in the first time interval of the incoming signal during the delay, washing the identified second signal away from the first time interval of the incoming signal during the delay, and deciding whether the possible preamble is a real preamble or not, by analyzing the washed incoming signal. | 06-24-2010 |
20100146358 | Method and Arrangement Relating to Communications Network - The invention relates to a method in a radio base station and user equipment, and comprises varying the transmitted timings of the HARQ feedback signalling such that only users with orthogonal pre-coding vectors (W) are scheduled simultaneously, to reduce multi-user interference and to ensure that said signalling is received by a transmitter before the start of the next retransmission. | 06-10-2010 |
20100135176 | Method and Arrangement in a Communication Network - The present invention relates to methods, a user equipment and a radio base station in a communication network, in which a downlink out-of-coverage is detected based on measurements done on a common channel or on the combination of common and dedicated channels. The out-of-coverage is then reported to the network, either using resources proactively assigned to the user equipment, or by transmitting a predetermined pattern of signature sequences assigned to the user equipment. | 06-03-2010 |
20100135169 | Channel Quality Reporting Method and Arrangement in a Telecommunication System - When a high SIR can be achieved for downlink data transmission, for example in a MIMO system, or when higher order modulation, such as 64 QAM, can be used, it is desired to measure the instantaneous downlink channel quality indicator (CQI), and report the measured CQI to the network using the same number of bits as when a lower SIR can be achieved. In order to do this, a true CQI is derived based upon at least one network controlled parameter and a measured channel quality parameter; and the true CQI value is scaled to a new CQI value such that the new CQI will fall within a specified range of CQI values; so that the new CQI achieved by scaling the derived CQI value can be reported with every CQI value over the entire reporting range requiring the same number of bits. | 06-03-2010 |
20100118876 | Link Layer Control Protocol Implementation - The present invention relates to a link layer control protocol implementation in a communication system. To improve operative efficiency of the link layer control protocol implementation it is suggested to delay issuance of a retransmission request for a missing data unit during a retransmission delay time period. Therefore, according to the present invention a retransmission request is not issued immediately upon detection of a missing data unit. Therefore, the present invention avoids issuance of false alarm for the missing data unit when it is received during the retransmission delay period. | 05-13-2010 |
20100113076 | Method and a Device for Reduced Interference in a Cellular Access System - A method for use in a cellular system comprising a plurality of base stations with corresponding cells, in which system the communication between users in a cell and the base station is divided into an up link period and a down link period, the method comprising letting a controlling node instruct the base stations regarding: a first point in time when the base station should start transmitting a control signal; a second point in time when the base station should start to listen for control signals from other base stations and measure their time of arrival and signal strength; a third point in time when the base station should cease listening for control signal; and a fourth point in time when the base station should transmit the measurements results to a receiving node in the system. | 05-06-2010 |
20100103892 | Method and Arrangements for Scheduling Transmission Resources with Variable Guard Intervals - Method and arrangements for scheduling transmission resources in a first node in a cell comprised within a wireless communication network. The first node is arranged to communicate over a communication channel with at least one user equipment within the cell. The communication is made by using a frame comprising uplink resources and downlink resources with a switching point between the downlink resources and the uplink resources. The method comprises the step of obtaining a parameter referring to the expected transmission quality of the communication and/or the expected coherence properties of the communication channel. The method also comprises scheduling a transmission on an uplink or downlink resource. The resource is located on a time distance from the switching point. The time distance is based on the obtained parameter. | 04-29-2010 |
20100099362 | Calibration Method and Device in Telecommunication System - A device system, computer medium and method for calibrating at least one impairment of a signal transmitted from a transmitting unit to a receiving unit, the method including receiving at the receiving unit at least two signals transmitted from the transmitting unit, estimating at the receiving unit, based on the received at least two signals, at least one parameter associated with transmit chain links between the transmitting unit and corresponding antennas of the transmitting unit, collecting the at least one parameter in a measurement report at the receiving unit, and transmitting the measurement report from the receiving unit for correcting the at least one impairment based on the at least one parameter. | 04-22-2010 |
20100091743 | Preparation Phase for Switching Between Su-MIMO and MU-MIMO - The present invention relates to a method and arrangement for switching between different modes in a communications network. The network comprises a number of transmit and a number of receive antennas, said modes comprising a single user mode and a multiple user mode. The method including the steps of: transmitting reference signals or predetermined sequences corresponding to both said modes comprising respective weighting matrices for said modes during a preparation phase, which comprises of one or more transmission time intervals (TTI), transmitting on a common channel, signalling information indicating start and duration of said preparation phase to all receiving equipments in a reception area. | 04-15-2010 |
20100054374 | Method and Arrangement Relating to Telecommunications - The present invention relates to a method and arrangement for providing a reliability information on information bits (bk) transmitted in a communications network, said bits constituting a transmitted vector (s) comprising elements selected by a transmitter from finite alphabet (S), wherein said transmitted vector is detected from an observed vector received symbols (y) providing a log-likelihood (L). Thus, the approximation is done by defining a number of bit terms having constant size and selecting a subset of bits and marginalizing over a selected part of said subset of bits. | 03-04-2010 |
20100042741 | Seeking and Synchronization Using Global Scene Time - A method of seeking in a rich media stream provided from a multimedia server to at least one multimedia client, wherein the method may be executed in an encoder of a multimedia server or a decoder or a multimedia client. A seeking instruction is inserted into the media stream at time instance X, comprising an offset time instance Y, in order to be used for seeking at a global time rate. A method for enabling synchronisation in a rich media stream wherein the synchronisation is based on a global timeline is also provided. | 02-18-2010 |
20100015984 | Method and Arrangements for an Event Triggered DRX Cycle - The invention relates to methods and arrangements for an event triggered DRX cycle adjustment. A user equipment located in a serving cell of a mobile communications network monitors downlink communication at predetermined time intervals when operating in discontinuous reception mode. The user equipment also performs communication parameter measurements regarding at least one of the serving cell and one or more neighbor cells. After the occurrence of a first event, the user equipment sends at least one of measurement data and a first event report to the network. The sending is triggered by the occurrence of the first event. The monitoring is caused to be performed at shortened time intervals after the occurrence of a second event, wherein the second event is defined to indicate a higher probability of receiving a handover command than the first event. | 01-21-2010 |
20090268643 | RADIO TRANSCEIVER ON A CHIP - An entire radio transceiver can be completely integrated into one IC chip. In order to integrate the IF filters on the chip, a heterodyne architecture with a low IF is used. A single, directly modulated VCO is used for both up-conversion during transmission, and down-conversion during reception. Bond-wires are used as resonators in the oscillator tank for the VCO. A TDD scheme is used in the air interface to eliminate cross-talk or leakage. A Gaussian-shaped binary FSK modulation scheme is used to provide a number of other implementation advantages. | 10-29-2009 |