Abstract: A method, performed by a first network node, for handling a maintenance of one or more second network nodes is described herein. The first network node and the one or more second network nodes operate in a communications network. The first network node obtains, respectively, from each of one or more third network nodes operating in the communications network, and for a respective second network node of the one or more second network nodes, one or more predictive models for each of: a) a performance of the respective second network node, and b) a traffic load of the respective second network node. The first network node then determines one or more plans to maintain the one or more second network nodes, based on the obtained one or more predictive models.

Abstract: The present invention relates to a method for beamforming a beam using an active antenna having predetermined aperture data predetermined aperture data comprising M×N dual polarized antenna subarrays within an aperture, each dual polarized antenna subarray comprising a first antenna subarray having a first polarization and a second antenna subarray having a second polarization non-parallel with the first polarization.

Abstract: The present invention relates to a method for detecting a number of user terminals (8a, 8b), each of said user terminals (8a, 8b) comprising a receiver unit (10), a transmitter unit (11) and a control unit (12) arranged to control said receiver unit (10) and transmitter unit (11), each of said user terminals (8a, 8b) also being associated with a wireless communication network (1) comprising a plurality of network cells (2, 3), each being equipped with a node (4, 5). The method comprises detecting (16) communication between each of said user terminals (8a, 8b) and an associated node (4; 5) of said wireless communication network (1).

Abstract: The present invention relates to a method for beamforming a beam using an active antenna having predetermined aperture data predetermined aperture data comprising M×N dual polarized antenna subarrays within an aperture, each dual polarized antenna subarray comprising a first antenna subarray having a first polarization and a second antenna subarray having a second polarization non-parallel with the first polarization.

Abstract: The present invention relates to a method for detecting a number of user terminals (8a, 8b), each of said user terminals (8a, 8b) comprising a receiver unit (10), a transmitter unit (11) and a control unit (12) arranged to control said receiver unit (10) and transmitter unit (11), each of said user terminals (8a, 8b) also being associated with a wireless communication network (1) comprising a plurality of network cells (2, 3), each being equipped with a node (4, 5). The method comprises detecting (16) communication between each of said user terminals (8a, 8b) and an associated node (4; 5) of said wireless communication network (1).

Abstract: A node for use in a wireless communication system comprising at least two Tx-chains and at least two Rx-chains is provided. A first means for a switch and filter network function MSN is arranged across all Tx-chains. The first MSN is arranged to output one antenna sector signal comprising: a radio sector signal, or a split radio sector signal, the splitting of a radio sector signal allowing one radio sector signal to feed sector antennas in more than one sector, each sector having at least one sector antenna. The first or a second MSN can also be arranged across Rx-chains. Further, a method to reduce power consumption in a node and a wireless communication system comprising the node is provided.

Abstract: A method is provided for using an antenna array to create two beams (a first beam and a second beam). In one aspect, the method uses dual polarization beam forming, which allows for many degrees of freedom in designing a desired power pattern. The method is well suited for systems with multiple radio chains (e.g., systems with active antennas). The method is also well suited for multi-port systems such as TD-SCDMA. In some embodiments, the method produces two beams where (a) the shape of the power beam pattern for the first beam and the shape of the power beam pattern for the second beam are the same (or substantially the same) in a plurality of directions of interest and (b) the beams have orthogonal (or substantially orthogonal) polarizations in the coverage area.

Abstract: The present invention relates to a communication unit, network and method for communication within a communication network, the unit comprising a transceiver portion, a processing unit and at least one interface arrangement for communication with at least one peripheral device. The unit further comprises an arrangement for transceiving at least parts of a signal to the communication network using at least one of said interface arrangements for communication with said at least one peripheral device.

Abstract: The invention provides a node for use in a wireless communication system comprising at least two Tx-chains and at least two Rx-chains. A first means for a switch and filter network function MSN is arranged across all Tx-chains. The first MSN is arranged to output one antenna sector signal comprising: a radio sector signal, or a split radio sector signal, the splitting of a radio sector signal allowing one radio sector signal to feed sector antennas in more than one sector, each sector having at least one sector antenna. The first or a second MSN can also be arranged across Rx-chains. The invention also provides a method to reduce power consumption in a node and a wireless communication system comprising the node.

Abstract: A method is provided for using an antenna array to create two beams (a first beam and a second beam). In one aspect, the method uses dual polarization beam forming, which allows for many degrees of freedom in designing a desired power pattern. The method is well suited for systems with multiple radio chains (e.g., systems with active antennas). The method is also well suited for multi-port systems such as TD-SCDMA. In some embodiments, the method produces two beams where (a) the shape of the power beam pattern for the first beam and the shape of the power beam pattern for the second beam are the same (or substantially the same) in a plurality of directions of interest and (b) the beams have orthogonal (or substantially orthogonal) polarizations in the coverage area.

Abstract: The present invention relates to an omnidirectional base station antenna arrangement with a number of antenna elements and a number of transceiver means for transmitting and receiving signals to/from a number of user stations. A feeding network is provided which comprises a number of phase ports, a number of which form first phase ports connected to a number of transceiver means for downlink communication and a number of which form second phase ports connected to a number of transceiver means for uplink communication. The feeding network comprises a number of antenna ports connected to antenna elements and the feeding network generates substantially independent, orthogonal signals to provide for phase diversity and the antenna elements are arranged to form at least one cylindrical array antenna.

Abstract: A multi-carrier power amplifying arrangement has a number of amplifying devices, each of which includes a main amplifier and a linearizing device. Furthermore it includes a device signal for adding the adding output signals from the amplifying devices in phase, a device for detecting the average phase error of the amplified signals and for providing a compensating control signal. The compensating control signal is provided to each amplifying device at least to compensate for the average phase error.

Abstract: The present invention is directed to cellular systems and methods for providing a multi-beam antenna configuration within a base station without utilizing duplex filters. The multi-beam antenna configuration of the present invention produces overlaid beams in both the uplink and downlink to cover the same area. Each beam has orthogonally oriented polarization directions (e.g., linear polarized slanted ±45°) for the uplink and downlink. Adjacent uplink beams shall also have shifted polarization directions in order to attain polarization diversity between different beams. In order to implement this polarization configuration, for each beam, there is a selective filter in front of the low noise amplifier for the uplink, and no duplex filter in front of the amplifier in the downlink direction.

Abstract: A telecommunications system and method is disclosed for allowing a base station to simultaneously transmit signals in several beams of a multi-beam antenna configuration. Antenna pattern control is maintained by employing orthogonal polarization orientation for every other beam. For example, the two orthogonal polarization directions can be approximately linear polarization slanted ±45°. To be able to transmit simultaneously in an arbitrary combination of more than one beam, the BS antenna array includes a separate feeder cable for each combination of beams corresponding to a particular polarization, from one feeder per beam to one feeder with all beams of that polarization.

Abstract: A dual-polarized antenna (10) with good isolation between feed ports (13a, 13b) and high similarity with respect to the radiation patterns is provided. An antenna (10) includes a patch (11), four symmetrically arranged feed structures (12a-12d, 15), two feed ports (13, 13b) and a feed network (14). Radiation pattern similarity is obtained by the pair-wise symmetrical, orthogonal layout of the feed structures (12a-12d, 15). Good isolation between feed ports (13a, 13b) is achieved through a feed network (14) divided into two network parts (14a, 14b) where each network part (14a, 14b) is designed so that each coupling between a network part (14a, 14b) and a feed structure (12a12d, 15) belonging to the other polarization is cancelled by a mirrored coupling with the other feed structure (12a-12d, 15) belonging to the polarization. In addition, a network part (14a, 14b) is laid out so that its corresponding feed structures (12a-12d, 15) are fed with supporting signals of equal magnitude.

Abstract: An electronics unit for wireless transfer of signals, includes an antenna part, an electronics part, and a transmission circuit part. The electronics part is placed on a laminate with at least one substrate layer of a dielectric material. The substrate layer is made of a flexible material and forms a continuous unit, including a first part which supports the electronics part, a second part which supports the antenna part, and a third part which supports the transmission circuit part. The second part of the substrate is formed to shape a convex surface, which supports groups of at least one antenna element. Since the surface is curved, the groups cover different directions.

Abstract: To improve null depths in an antenna pattern of a first polarization, formed with nulls in at least one angular region, a further antenna pattern of a second polarization, substantially orthogonal to the first polarization, is concurrently formed. In the angular region, the amplitudes of the copolar components of the further antenna pattern are substantially equal to the amplitudes of the crosspolar components of the antenna pattern of the first polarization, and the phases of the copolar components of the further antenna pattern of the second polarization are substantially opposite to the phases of the crosspolar component of the first polarization.

Abstract: An antenna arrangement and a method for obtaining such an antenna arrangement are disclosed. The antenna arrangement utilizes the beam ports of a beam forming network, e.g. a Butler matrix, in connection with a multi-element radiator antenna for obtaining receive/transmit channels having more antenna beams within a desired coverage. At least one extra signal combiner is utilized for combining at least one beam port of a number of ordinary beam ports with a nonadjacent beam port to form one receive/transmit channel in a number of desired receive/transmit channels. The particular receive/transmit channel uses the at least one extra signal combiner for combining at least one of a number of ordinary beam ports with a nonadjacent beam port normally being terminated, for adapting power and sensitivity distributions for a desired cell coverage or for desired coverage of overlapping cells.