Abstract: There is disclosed a method of operating a network node, the network node operating according to a first radio access technology, RAT. The method includes transmitting signaling having communication signaling and Demodulation Reference Signaling, DMRS, in a transmission resource pattern. The DMRS is arranged in the transmission resource pattern according to a DMRS pattern, in which the DMRS pattern is selected from a set of DMRS patterns based on a coexistence indication indicating the presence of cell-specific reference signals, CRS, associated to a second RAT.

Abstract: Embodiments herein relate to a method performed by a radio node (13) for managing communication of one or more wireless devices (10) within a wireless communication network (1); which wireless communication network (1) comprises a radio access network node (12) serving the radio node (13). The radio node (13) receives an indication of radio resources out of a total spectrum of radio resources controlled by the radio access network node (12) for communication over a first radio interface using a first radio access technology, which indicated radio resources are allocated to the radio node (13) from the radio access network node (12) for communication over a second radio interface, which second radio interface uses a second radio access technology being different than the first radio access technology. The radio node (13) allocates at least part of the indicated radio resources for communication to and/or from the one or more wireless devices (10) over the second radio interface.

Abstract: There is provided mechanisms for scheduling subframes at protocol layer L1. The method is performed by a network device. A method comprises obtaining, at the protocol layer L1, an indication of an occurrence of Listen Before Talk (LBT) failure for transmission of a subframe in an unlicensed frequency spectrum. The method comprises storing, in an L1 buffer, data of the subframe to be transmitted in the unlicensed frequency spectrum as a result thereof.

Abstract: The disclosure relates to a method (20) for maintaining uplink time alignment performed in a network node (12) of a communication system (10) comprising a first reception point (35) and a second reception point (36). The network node (12) is configured to control the first reception point (35) and configured to serve a communication device (14). The method (20) comprises determining (21) transmit power of the communication device (14) based on signaling from the communication device (14) received in the second reception point (36), while meeting a criterion enabling performing of an uplink time alignment measurement towards the first reception point (35). The disclosure also relates to corresponding network node, computer program and computer program product.

Abstract: The disclosure relates to a method (20) for maintaining uplink time alignment performed in a network node (12) of a communication system (10) comprising a first reception point (35) and a second reception point (36). The network node (12) is configured to control the first reception point (35) and configured to serve a communication device (14). The method (20) comprises determining (21) transmit power of the communication device (14) based on signaling from the communication device (14) received in the second reception point (36), while meeting a criterion enabling performing of an uplink time alignment measurement towards the first reception point (35). The disclosure also relates to corresponding network node, computer program and computer program product.

Abstract: The present invention relates to a method in a radio equipment unit for downlink radio communication with a UE of a radio network. The radio equipment unit provides radio communication with UE in at least one cell, and is connected to a radio equipment control unit controlling the radio communication. The method comprises receiving (610) from the radio equipment control unit: baseband processed user related data and information indicating a frequency radio resource allocated for a transmission to the UE. The method also comprises generating (620) cell defining signals for the cell of the UE, and transmitting (630) the generated cell defining signals added to the baseband processed user related data to the UE, using the indicated frequency radio resource. The present invention also relates to a corresponding method in the radio equipment control unit and to the units themselves.

Abstract: Embodiments herein relates to a method in a radio base station (12) for handling a timing of uplink transmission from a user equipment (10) to the radio base station (12) in a radio communications network. The user equipment (10) is served in a cell (14) controlled by the radio base station (12), and which radio base station (12) and user equipment (10) are comprised in the radio communications network. The communications in the cell (14) are organized in radio frames comprising subframes. The radio base station (12) receives a first uplink transmission from the user equipment (10) in a subframe related to the radio base station (12). The radio base station then estimates a time parameter value based on a distance between the user equipment (10) and the radio base station (12) when the first uplink transmission is transmitted from the user equipment (10).

Abstract: The present invention relates to a method and arrangement for reducing interference in a cellular communication network. A radio base station of the network is configured to serve at least a first cell, where interference is reduced by selecting a link adaptation scheme for a UE in the first cell, The arrangement comprises means for receiving measurements on estimated channel quality, means for estimating channel quality for a future transmission by adjusting the received measurements on estimated channel quality based on knowledge of future UE scheduling in at least the first cell, and means for selecting the link adaptation scheme comprising a transmit power level based on the estimated channel quality for the future transmission.

Abstract: Disclosed herein are methods for using new energy-saving subframe structures, as well as corresponding apparatus that are configured to exploit these energy-saving subframes. In these energy-saving subframes, some, but not all, of the individual OFDM symbols in a subframe are inactive, meaning that no signal is transmitted during at least a part of the symbol time of the blanked symbols. An example method according to these techniques may be implemented in a radio transceiver, such as an LTE eNodeB, and comprises transmitting, in a first symbol time of a downlink subframe that comprises a plurality of symbol times, a codeword indicating that the downlink subframe includes at least one inactive symbol time. The method further includes transmitting data during at least one but fewer than all of the remaining ones of the plurality of symbol times in the downlink subframe. Corresponding techniques for receiving the energy-saving subframes are also disclosed.

Abstract: Embodiments herein relates to a method in a radio base station (12) for handling a timing of uplink transmission from a user equipment (10) to the radio base station (12) in a radio communications network. The user equipment (10) is served in a cell (14) controlled by the radio base station (12), and which radio base station (12) and user equipment (10) are comprised in the radio communications network. The communications in the cell (14) are organized in radio frames comprising subframes. The radio base station (12) receives a first uplink transmission from the user equipment (10) in a subframe related to the radio base station (12). The radio base station then estimates a time parameter value based on a distance between the user equipment (10) and the radio base station (12) when the first uplink transmission is transmitted from the user equipment (10).

Abstract: The present invention relates to a method in a radio equipment unit for downlink radio communication with a UE of a radio network. The radio equipment unit provides radio communication with UE in at least one cell, and is connected to a radio equipment control unit controlling the radio communication. The method comprises receiving (610) from the radio equipment control unit: baseband processed user related data and information indicating a frequency radio resource allocated for a transmission to the UE. The method also comprises generating (620) cell defining signals for the cell of the UE, and transmitting (630) the generated cell defining signals added to the baseband processed user related data to the UE, using the indicated frequency radio resource. The present invention also relates to a corresponding method in the radio equipment control unit and to the units themselves.

Abstract: In cellular radio systems it is a problem to provide service to UE (user equipment) on the cell border. In systems that apply a frequency re-use of one, and OFDM access technology, the uplink direction need be improved. One embodiment of this application relates to a radio base station that is equipped with one or more FFT processor/s in addition to the FFT-processor that is adapted for being adjusted to the timed aligned arrival of signals from UE served by the radio base station. The additional FFT processor/s is adapted for being adjusted to the arrival of one or more signals from UE that are served by other radio base station/s. The radio base station is further adapted to send Fourier processed signal information relating to the UE of the other radio base station/s and thereby assist the other radio base station in signal reception.

Abstract: The present invention relates to a base station and a method in a mobile telecommunication network for allocating and de-allocating uplink base station processing resources to a mobile terminal. The base station are adapted to communicate to a mobile terminal on an uplink channel supporting macro-diversity, and the base station is adapted to be a non-serving base-station without control of the resource allocation to the mobile-terminal. The base station comprises means for predicting a likelihood of successful decoding of a future transmission, and means for allocating or de-allocating processing resources based on said prediction.

Abstract: A method in a communication network node for testing a capacity of a communication network comprising the communication network node is provided. The communication network node communicates with a plurality of user equipments on downlink and uplink channels over an air interface. The communication network node generates (201) artificial load in a traffic model converter unit comprised in the communication network node, using a traffic model. After reserving (202) a number of physical resource blocks to said generated artificial load, said traffic model converter unit in the communication network node sends (203) information about physical resources that are available for real user equipment load to a scheduler within the communication network node. The scheduler schedules (204) physical resource blocks for said real user equipment load.

Abstract: In cellular radio systems it is a problem to provide service to UE (user equipment) on the cell border. In systems that apply a frequency re-use of one, and OFDM access technology, the uplink direction need be improved. One embodiment of this application relates to a radio base station that is equipped with one or more FFT processor/s in addition to the FFT-processor that is adapted for being adjusted to the timed aligned arrival of signals from UE served by the radio base station. The additional FFT processor/s is adapted for being adjusted to the arrival of one or more signals from UE that are served by other radio base station/s. The radio base station is further adapted to send Fourier processed signal information relating to the UE of the other radio base station/s and thereby assist the other radio base station in signal reception.

Abstract: The present invention relates to a method and arrangement for reducing interference in a cellular communication network. A radio base station of the network is configured to serve at least a first cell, where interference is reduced by selecting a link adaptation scheme for a UE in the first cell, The arrangement comprises means for receiving measurements on estimated channel quality, means for estimating channel quality for a future transmission by adjusting the received measurements on estimated channel quality based on knowledge of future UE scheduling in at least the first cell, and means for selecting the link adaptation scheme comprising a transmit power level based on the estimated channel quality for the future transmission.

Abstract: A radio base station (20) has an internal interface (26) connecting a radio equipment (RE) (24) and a radio equipment controller (REC) (22). The radio base station performs a pre-start-up procedure or method for the internal (26). The pre-start-up procedure is performed preparatory to and/or in conjunction with a start-up procedure for the internal interface. As on e of its aspects, the pre-start-up procedure involves storing one or more previously proven combinations of line bit rate and protocol as stored combination(s) for use on the internal interface. Prior to synchronization of the internal interface, the stored combination(s) are retrieved and included in a temporary available set of combinations of line bit rate and protocol. Thereafter the start-up procedure for the internal interface is initiated for the purpose of determining efficacy of the temporary available set.

Abstract: An interface, apparatus, and method are described for communication between a radio equipment control (REC) node and a radio equipment (RE) node in a radio base station that tranceives information over radio interface using multiple antenna carriers. The REC node is separate from and coupled to the RE node by a transmission link. Both control information and user information are generated for transmission over the transmission link from one of the REC node and the RE node to the other. Many advantageous interface features are described.

Abstract: The present invention relates to a base station and a method in a mobile telecommunication network for allocating and de-allocating uplink base station processing resources to a mobile terminal. The base station are adapted to communicate to a mobile terminal on an uplink channel supporting macro-diversity, and the base station is adapted to be a non-serving base-station without control of the resource allocation to the mobile-terminal. The base station comprises means for predicting a likelihood of successful decoding of a future transmission, and means for allocating or de-allocating processing resources based on said prediction.

Abstract: An interface, apparatus, and method are described for communication between a radio equipment control (REC) node and a radio equipment (RE) node in a radio base station that tranceives information over radio interface using multiple antenna carriers. The REC node is separate from and coupled to the RE node by a transmission link. Both control information and user information are generated for transmission over the transmission link from one of the REC node and the RE node to the other. Many advantageous interface features are described.