Abstract: A method of a communication device arranged to operate in a cellular communication system is presented. The method comprises determining interference mitigation capabilities for control symbols, transmitting information about the determined interference mitigation capabilities to a network node of the cellular communication system. Also a method of a network node arranged to operate in a cellular communication system. The method comprises receiving from a communication device operating in the cellular communication system information about determined interference mitigation capabilities of the communication device for control symbols, and adapting a performing of one or more radio operation tasks based on the received information. Communication device, network node, and computer programs for the communication device and network node are also presented.

Abstract: A method of a communication device arranged to operate in a cellular communication system is presented. The method comprises receiving a control symbol from a network node operating a cell of the cellular communication system and serving the communication device, determining interference situation for the control symbol, selecting an interference mitigation algorithm based on the determined interference, and performing the selected interference mitigation algorithm for the received control symbol. A communication device arranged to perform interference mitigation for received control symbols by the method, and a computer program for the communication device are also presented.

Abstract: A method of selecting operation antennas in a multiple input receiver having a plurality of antennas connected to respective antenna ports of the receiver may be provided to save energy and/or other resources. The method comprises determining pairwise correlation of propagation channels among the plurality of antenna ports, respectively, determining a candidate first number of antenna ports to use for operation, selecting the first number of antenna ports among the plurality of antenna ports, wherein the selecting comprises selecting antenna ports based on mutual correlation among the plurality of antennas, and operating the multiple input receiver using the selected first number of antenna ports if there is no significant performance gain from using all of the plurality of antenna ports. A receiver, communication device and computer program for the same, as well as method, computer program and equipment for testing such a receiver are also disclosed.

Abstract: An inventive UE carrier aggregation (CA) capability reporting signalling model allows UEs (30) aggregating large numbers of component carriers to transmit CA-relevant capabilities to the network more efficiently than the current (legacy) signalling model. Rather than reporting CA/MIMO/CSI/NAICS capabilities separately for each supported band combination, including fallback configurations, embodiments of the present invention either report UE Radio Frequency (RF) and Baseband (BB) related capabilities separately, or report them disassociated from CA band configurations. This approach avoids the need to signal the full UE (30) set of capabilities for each of (possibly many) supported band combinations. Furthermore, fallback capabilities are signalled implicitly, eliminating the need to transmit this data.

Abstract: A first user equipment is configured to mitigate multi-antenna inter-stream interference. A method by the first UE includes determining, based on one or more criteria, a number of multi-antenna streams whose interference can be currently mitigated by the first UE, and transmitting information based on the number of multi-antenna streams to a first network node, to a second network node, and/or to a second UE. A related method by a first network node serving or managing the first UE includes obtaining information based on a number of multi-antenna streams whose interference can be currently mitigated by a first UE at the first UE, and performing one or more radio operational tasks using the information based on the number of multi-antenna streams whose interference can be currently mitigated.

Abstract: Methods of operating a wireless terminal may be provided. A high-speed indication may be received for a cell of a network node indicating that the cell is adapted to operate in a high-speed environment, and operation of the wireless terminal may be adapted to communicate through the cell of the network node in the high-speed environment responsive to receiving the high-speed indication. Methods of operating a node of a wireless communication network may also be provided. Communication service may be provided through a cell to a plurality of wireless terminals in a high-speed environment, and a high-speed indication may be transmitted through the cell to one of the plurality of wireless terminals, with the high-speed indication indicating that the cell is adapted to operate in a high-speed environment.

Abstract: A method of an electronic communication device is disclosed. The electronic communication device is arranged to operate in a radio communication system, wherein the radio communication system has capability of performing link adaptation by adapting one or more parameters of communication in view of a quality of a radio link between a network node of the radio communication system and the electronic communication device. The method comprises determining a link adaptation status for the electronic communication device, and transmitting information related to the determined link adaptation status to one or more network nodes of the radio communication system. A method of a network node, an electronic communication device, a network node, and computer programs are also disclosed.

Abstract: A first user equipment is configured to mitigate multi-antenna inter-stream interference. A method by the first UE includes determining, based on one or more criteria, a number of multi-antenna streams whose interference can be currently mitigated by the first UE, and transmitting information based on the number of multi-antenna streams to a first network node, to a second network node, and/or to a second UE. A related method by a first network node serving or managing the first UE includes obtaining information based on a number of multi-antenna streams whose interference can be currently mitigated by a first UE at the first UE, and performing one or more radio operational tasks using the information based on the number of multi-antenna streams whose interference can be currently mitigated.

Abstract: Antenna nodes are controlled to maintain a respective radio cell, each cell having one and the same physical cell identity. The antenna nodes are further controlled to maintain the respective radio cell in a single direction substantially along a path such that each wireless communication device, during movement in a movement direction along the path, can connect either to consecutive antenna nodes towards which the wireless communication device is moving or connect to consecutive antenna nodes away from which the wireless communication device is moving.

Abstract: A method performed in a wireless device (300) of a cellular communication system is disclosed. The wireless device (300) has a first receiver configuration and a second receiver configuration and is capable of operating in DRX. The method comprises determining (110) a DRX configuration of the wireless device, wherein the DRX configuration indicates a time period during which the wireless device (300) should monitor a control channel. The method further comprises monitoring (120) the control channel during said time period using the first receiver configuration if the DRX configuration is a first DRX configuration or monitoring (130) the control channel during said time period using the second receiver configuration if the DRX configuration is a second DRX configuration. A method in a network node, a wireless device, a network node, computer program products, and computer-readable media are also disclosed.

Abstract: Antenna nodes are controlled to maintain a respective radio cell, each cell having one and the same physical cell identity. The antenna nodes are further controlled to maintain the respective radio cell in a single direction substantially along a path such that each wireless communication device, during movement in a movement direction along the path, can connect either to consecutive antenna nodes towards which the wireless communication device is moving or connect to consecutive antenna nodes away from which the wireless communication device is moving.

Abstract: A method performed in a wireless device of a cellular communication system is disclosed. The wireless device has a first receiver configuration and a second receiver configuration. The method comprises receiving data over a data channel of the cellular communication system during a first time period. During a second time period, following directly after the first time period, during which no data is received over said data channel, a control channel of the cellular communication system is monitored using the first receiver configuration. During a third time period, following directly after the second time period, and during which no data is received over said data channel, the control channel is monitored using the second receiver configuration. A method in a network node, a wireless device, a network node, computer program products, and computer-readable media are also disclosed.

Abstract: A method of a wireless communication device adapted to receive MIMO signals from a network node of a cellular communication network is disclosed. The MIMO signals comprises a variable number P of codewords conveyed by a variable number Q of MIMO layers, Q>P and P>1. The method comprises selecting a preferred mapping scheme for codeword-to-layer mapping based on a preferred number of layers and a channel quality metric related to the transmission of the MIMO signals, the preferred mapping scheme being selected among a plurality of available codeword-to-layer mapping schemes. The method also comprises transmitting an indication of the preferred mapping scheme to the network node. A related method for the network node is also disclosed.

Abstract: A method in a network node of a cellular communications system for providing MIMO transmissions to a communication device in the cellular communications system is disclosed. The MIMO transmissions use P code words mapped onto Q MIMO layers, where P?2 and Q>P. The method comprises mapping the code words for transmission to the communication device onto the MIMO layers according to a selected mapping scheme that has been selected among a plurality of available mapping schemes available for use for MIMO transmission of P code words over Q MIMO layers in the cellular communications system. A corresponding method for the communication device is also disclosed.

Abstract: Methods of operating a wireless terminal may be provided. A high-speed indication may be received for a cell of a network node indicating that the cell is adapted to operate in a high-speed environment, and operation of the wireless terminal may be adapted to communicate through the cell of the network node in the high-speed environment responsive to receiving the high-speed indication. Methods of operating a node of a wireless communication network may also be provided. Communication service may be provided through a cell to a plurality of wireless terminals in a high-speed environment, and a high-speed indication may be transmitted through the cell to one of the plurality of wireless terminals, with the high-speed indication indicating that the cell is adapted to operate in a high-speed environment.

Abstract: Antenna nodes (310, 311, 312, 313) are controlled to maintain a respective radio cell (320, 321, 322, 323), each cell having one and the same physical cell identity. The antenna nodes are further controlled to maintain the respective radio cell in a single direction substantially along a path such that each wireless communication device (301, 303), during movement in a movement direction (302, 301) along the path, can connect either to consecutive antenna nodes towards which the wireless communication device is moving or connect to consecutive antenna nodes away from which the wireless communication device is moving.

Abstract: Different Out-of-sync thresholds are defined for Radio Link Monitoring by a UE having a selectively enabled advanced receiver feature. When the advanced receiver feature is disabled, the UE monitors received signal quality and compares a signal quality metric to a first threshold developed for a reference receiver. When the advanced receiver feature is enabled, the UE compares the signal quality metric to a second threshold indicating lower signal quality than the first threshold. In either case, if the signal quality meets the respective threshold, the UE goes Out-of-sync. The Out-of-sync UE continues to monitor received signal quality. Regardless of whether the advanced receiver feature is enabled or not, a third threshold, developed for the reference receiver, is applied to determine when to return to In-sync. In one embodiment, the reference receiver enables two antennas, and the advanced receiver feature is enabling four antennas.

Abstract: A network node in a wireless communication network generates configuration information that configures an extent to which a wireless communication device autonomously adapts a number of different receiver components that the wireless communication device uses under different conditions at the wireless communication device, subject to minimum receiver component requirements respectively specified for the different conditions. In some examples, the different conditions may be associated with correlation of propagation channels received at the wireless communication device. The network node transmits the configuration information to the device. Correspondingly, the device autonomously adapts the number of different receiver components that the wireless communication device uses in accordance with the configuration information.

Abstract: In MIMO wireless communication networks, receiver MIMO antenna parameters are not static over time. For example, the MIMO channel correlation is higher for high frequency bands than for low frequency bands. This variability of the receiver antenna parameters introduces uncertainty based the reported CSI (e.g., CQI, PMI, RI) if the network uses only static assumptions for such antenna parameter values. In embodiments, the UE determines the current status of its receive antenna parameters—such as number, configuration, correlation, and power imbalance—and transmits this information to the network (e.g., serving BS). The network node then based on the received information performs one or more radio operational tasks leading to more efficient use of radio resources and enhanced system performance.

Abstract: A first user equipment is configured to mitigate multi-antenna inter-stream interference. A method by the first UE includes determining, based on one or more criteria, a number of multi-antenna streams whose interference can be currently mitigated by the first UE, and transmitting information based on the number of multi-antenna streams to a first network node, to a second network node, and/or to a second UE. A related method by a first network node serving or managing the first UE includes obtaining information based on a number of multi-antenna streams whose interference can be currently mitigated by a first UE at the first UE, and performing one or more radio operational tasks using the information based on the number of multi-antenna streams whose interference can be currently mitigated.