Abstract: The method comprising at least one phase synchronized cellular base station having at least one transmit antenna for transmitting a signal to a at least one non-phase synchronized cellular base station, where it comprises transmitting by said at least one transmit antenna of said phased-synchronized cellular base station a beacon signal to said at least one non-phase synchronized cellular base station, included as part of said transmitted signal, said beacon signal comprising two orthogonal length-8 Walsh-Hadamard sequences to be broadcasted by said at least one phase synchronized cellular base station in order to provide said phase synchronization.

Abstract: A method to implement a Multiple Input Multiple Output transmission mode In the method of the invention, said MIMO transmission mode comprises using a certain number of antennas in a user equipment and a given number of antennas in a radio access node for the communication between said user equipment and said radio access node, said communication carried out by means of a communication channel, said communication channel represented by a channel matrix. The method of the invention is characterized in that it comprises uncorrelating at least part of the coefficients of said channel matrix when said communication channel is degenerate by making use of at least one additional antenna in each of said radio access node and said user equipment in order to change the radiation pattern associated to transmission layers of said communication enabling the use of an enhanced MIMO transmission mode.

Abstract: The method comprising at least one wireless user terminal, UE, connected through a wireless network to a serving base station and a plurality of network cells, each one comprising a base station, said at least one wireless UE: estimating the cell loads of the serving base station and of the plurality of network cells by analysing a downlink air interface load; providing to said wireless network, information about the actual cell load estimation of said plurality of cells, and performing a network cell selection based on said estimated cell loads, wherein said cell selection is performed without any exchange of cell load between said plurality of network cells.

Abstract: The method comprising estimating, at least one wireless user device (UE) its own velocity from at least one downlink pilot signal being transmitted by any base station from a plurality of different base stations, and further comprising:—broadcasting each one of said plurality of different base stations a parameter relative to its own cell size;—performing said at least one wireless user device in idle mode cell selections and reselections based on said plurality of base station cell size parameters received and said at least one wireless user device estimated velocity; and—reporting, said at least one wireless user device in connected mode, said estimated velocity and cell sizes of neighboring base stations to a serving base station in order to perform handovers based on said reported estimated velocity and said neighboring base station cell sizes.

Abstract: The method comprising at least one user device provided with at least four antennas, wirelessly connected to a serving base station having between one and four transmit antennas and suffering interferences from at least one interfering base station having between one and four transmit antennas, establishing a data transmission link among a plurality of antennas, and: applying a time shift delay between said serving base station and said at least one interfering base station in order to avoid collision between Cell Reference Signals (CRS) of serving and interfering base stations when said data transmission is established; and introducing changes on the physical layer for PDSCH transmission and reception aimed at achieving inter-layer interference cancellation, said changes introduced comprising the introduction of a pattern of transmission gaps at symbols (l) and subcarrier indices (k) of interfering cell's CRS signals, which will be exploited by said at least one user device for effective interference canc

Abstract: A method and a system for channel state information (CSI) reporting in LTE networks according to the mobility of user equipment. The method includes user equipment (UE) transmitting to an LTE cellular base station (eNodeB), a CSI report containing quality information including CQI, PMI and RI indicators on an uplink radio channel in a periodic manner using a physical uplink shared channel (PUSCH), the CSI reporting activated based on a low mobility estimation of the UE and including a first CSI report type containing CSI information in DWT form of the channel impulse responses and average CQI indications for the codewords in use, being some of the DWT coefficients admissible to be discarded for increased compression; and a second CSI report type containing differences in coefficients of the DWT for each channel impulse responses, and differences in the average of CQI values. The system is adapted to implement the method.

Abstract: The method comprising passing, a base station or a user terminal, information comprising data signals and encoding, a first and a second turbo encoders, said received data signals, generating two different turbo code blocks comprising a set of systematic and parity bits. Where, in order to enhance detection the two different turbo code blocks are simultaneously transmitted through a wireless OFDM system and wherein the data signals to be encoded by said second turbo encoder are interleaved prior encoding by an external bit interleaver. The system of the invention is arranged to implement the method of the invention.

Abstract: A method and radio network entity for scheduling resources comprising: selecting the user for which the scheduling metric calculated based on CQI reports is a main maximum in a certain frequency subband and checking whether there is another subband in which the selected user has a calculated scheduling metric value higher than the main maximum. If so, secondary maxima of scheduling metrics for said user and others in another different subband are searched and compared with the previous calculated maximum. According to the result of this comparison, each user is assigned to at least one frequency subband, up to K subbands which can be adjacent or not depending upon the configuration of the network entity in uplink and downlink (e.g., supporting LTE). Scheduling of both time and frequency resources is optimized and simultaneously the throughput of users in a cell is maximized.

Abstract: Method, system and computer programs for performing virtualization of a radio access technology over OFDMA wireless networks, The method comprises splitting OFDMA time-frequency resources in each subframe of an OFDMA frame structure; reserving, in the downlink, resource elements in the split OFDMA time-frequency resources reserved for virtualization of a radio access technology for insertion of downlink reference signals to perform downlink channel estimation by user terminals with a specified separation between signals in the time and frequency domains; inserting, in the uplink, training or pilot signals along the split OFDMA time-frequency resources reserved for virtualization of said radio access technology by mapping said signals over time-frequency resources scheduled for a particular user according to a multiple access scheme supported by said radio access technology; and mapping, in said downlink and uplink, complex baseband symbols corresponding to information from said radio access technology into sa

Abstract: The method includes: performing a packet scheduling for a plurality of user terminals (UEs) based on information regarding QoS classes, the information regarding QoS classes is included in QoS class identifiers received from an Evolved Packet Core providing communication services to the user terminals. The method further includes receiving channel quality indicators from the plurality of user terminals and performing the scheduling also on the basis of the received channel quality indicators. The system of the invention is arranged to implement the method of the invention.

Abstract: A method involving coordinating resources between a victim and an aggressor base station in massive MIMO systems, whereby only those specific beams involved in the interference scenario are coordinated in time and/or frequency domains without affecting other resources committed to other users as well as legacy users. Also disclosed is a system and computer program configured to implement the method.

Abstract: The method comprising a base station equipped with a large number of antennas according to a two-dimensional rectangular array and a number M of cell users, said rectangular array comprising N1 antenna elements along one axis with a regular spacing dx and N2 antenna elements along a perpendicular axis with a regular spacing dy, said users being characterized by angles (?,?) in a spherical coordinate system, where in order to achieve orthogonal multiple access the method comprises: selecting a grid spacing (?u,?v) in the (u, v) domain; discretizing the (u, v) domain; constructing a set of signals ST[k,l,f]; calculating time-domain excitations AT[n,m,t] for the antenna elements in the array given by coordinates (ndx,mdy) for generation of the downlink transmit signals; and obtaining the frequency contents SR[k,l,f] of the complex baseband signals received from the M users in the uplink. The system implements the method of the invention.

Abstract: A method to implement a Multiple Input Multiple Output transmission mode In the method of the invention, said MIMO transmission mode comprises using a certain number of antennas in a user equipment and a given number of antennas in a radio access node for the communication between said user equipment and said radio access node, said communication carried out by means of a communication channel, said communication channel represented by a channel matrix. The method of the invention is characterised in that it comprises uncorrelating at least part of the coefficients of said channel matrix when said communication channel is degenerate by making use of at least one additional antenna in each of said radio access node and said user equipment in order to change the radiation pattern associated to transmission layers of said communication enabling the use of an enhanced MIMO transmission mode.

Abstract: A method and device for virtualization of terminal devices in mobile communications networks. The present invention introduces the idea of a completely virtualized terminal device. Any interaction through the user interface can trigger appropriate actions, such as connecting to a peer device, but the behaviour of the terminal device would be fully controlled by an operator's device virtualization node which would perform the appropriate actions with the peer device on behalf of the terminal device, irrespective of the type of connection. The complete functionality of the device is virtualized making it independent of the actual device capabilities so the mobile users can get rid of any actual constraints imposed by the terminal device.

Abstract: In the method, a user device detects interferences a single dominant interferer of a neighbour base station, said user device provided with at least two antennas and said user device connected to a main base station, said main base station introducing a pattern of transmission gaps for certain Resource Elements in the Resource Element mapping function by switching off the transmission, being said certain Resource Elements in the Resource Element mapping function introduced for the PDSCH complex symbols.

Abstract: The system comprises a plurality of radio access nodes, or cells, each of said cells providing a coverage area to a plurality of user equipments, characterised in that each of said radio access nodes is splitted into: a common processing section (1) which performs a main processing stage; and a plurality of remote transceiving sections (2a, 2b, 2c), each performing a local processing stage complementing said main processing stage, being operatively connected to said common processing section, and constituting a sub-cell providing a coverage sub-area, wherein said coverage area is distributed into said coverage sub-areas. The method is arranged for carrying out said splitting of radio access nodes.

Abstract: A method and radio network entity for scheduling resources comprising: selecting the user for which the scheduling metric calculated based on CQI reports is a main maximum in a certain frequency subband and checking whether there is another as subband in which the selected user has a calculated scheduling metric value higher than the main maximum. If so, secondary maxima of scheduling metrics for said user and others in another different subband are searched and compared with the previous calculated maximum. According to the result of this comparison, each user is assigned to at least one frequency subband, up to K subbands which can be adjacent or not depending upon the configuration of the network entity in uplink and downlink (e.g., supporting LTE). Scheduling of both time and frequency resources is optimized and simultaneously the throughput of users in a cell is maximized.