Abstract: There is proposed a mechanism by means of which information can be generated and used for estimating and identifying at each base transceiver station of a communication network the set of other base transceiver stations generating interference on certain monitored component carriers used by the base transceiver station, i.e. information for the generation of the incoming uplink background interference matrix. For this purpose, a specific communication information set, referred to as uplink radio load map, is determined which informs about an average (time/frequency) and aggregated (over all or group of served UEs) uplink load measure per component carrier. Based on the uplink radio load map received via suitable signaling from other base transceiver stations, each base transceiver station can determine the incoming uplink background interference matrix and initiate, if necessary, suitable measures for reducing interference per component carrier.

Abstract: Assignment of component carriers Carrier aggregation, and assignment of component carriers is disclosed. In a method a capability of a communication device for carrier aggregation of a plurality of component carriers is determined. Loading of at least one of the component carriers is determined. The communication device is assigned to one or more of the component carriers on the basis of determining the capability and determining the loading.

Abstract: When it is determined that a first estimate of the total level of interference towards transmissions associated with a first access node from transmissions associated with other access nodes exceeds a predetermined target maximum value; then in dependence on the extent to which said first estimate exceeds said target maximum value, selecting one or more of said other access nodes to which to make a request to reduce the transmission power of interfering transmissions, and/or selecting an amount by which to request any one or more of said other access nodes to reduce the transmission power of interfering transmissions.

Abstract: An apparatus, method, system and computer program product provide control channel coordination in heterogeneous networks. Parameters are provided indicating the availability of resources, wherein a resource is defined as an available radio frequency per time interval, and parameters indicate configuration of a physical channel configured for downlink control, for a physical control channel configured for format indication, and for a physical channel configured for HARQ indication, for use in both of two different communication cells providing radio communication services for terminals located therein. Further, a first resource allocation set and a second resource allocation set are determined, wherein determinations of the first resource allocation set and the second resource allocation set are made to be as mutually disjoint in resource allocation as possible in consideration of the parameters.

Abstract: Wireless channel interference information is determined (e.g., a background interference matrix BIM constructed from multiple user equipment measurements). Reliability of the interference information is classified and sent with the interference information to a neighbor network access node such as a HeNB. In various embodiments there are three layers of reliability, the above being the first. The second layer utilizes variability of a plurality of such reliability indications received from the same neighbor HeNB, which is updated as new interference information and reliability indications are received from that same neighbor HeNB. The third layer utilizes a peer review/update process on the neighbor HeNBs themselves, where each HeNB's performance is shared among all and updated by one another as different HeNBs utilize one another's BIM and assesses how reliably it reflected actual interference conditions.

Abstract: Controlling interference towards a first access node from uplink transmissions made by a user device to a second access node, wherein said controlling is carried out on the basis of an indication of the pathloss between said first and second access nodes without using any measurement of pathloss between said user device and said first access node.

Abstract: There is provided solution for controlling transmission power characteristics of a local area base station. The solution includes determining the level of radio interference on a first frequency band used by a local area base station and on at least one second frequency band adjacent to the first frequency band. The solution may further comprise controlling the transmission power characteristics of the local area base station by taking into account at least one of the determined levels of interference.

Abstract: A method, apparatus, and computer program product, wherein a channel quality information received from a user in a multi-carrier transmission system is categorizing on a per-user basis, and one of a plurality of feedback overhead reduction techniques is individually selected for the user in response to a result of the channel categorization.

Abstract: A network access node eNB sends to a user equipment UE a pattern of subframe measurement restrictions and an indication of how to utilize the pattern for measuring subframes. The indication may select from among: the UE's own-cell measurements; the UE's neighbor-cell measurements; both same and neighbor-cell measurements, and no measurement restrictions. The eNB may generate the pattern from an almost-blank subframe ABS pattern for the UE's own-cell and of its neighbor-cell. The pattern and indication may be sent in separate RRC messages, or if sent in one message there is a second indication sent in a second RRC message instructing the UE to terminate utilizing the pattern and indication for restricting its subframe measurements. Embodiments are particularly useful for inter-cell interference mitigation eICIC for the LTE-Advanced system.

Abstract: An apparatus including a monitor configured to determine at least one dominant interfering neighbouring base station dependent on an associated at least one neighbouring base station interference parameter value and generator configured to generate at least one interference reduction request for the at least one dominant interfering neighbouring base station.

Abstract: In a communication network including a plurality of base stations, a method including the steps of: sending a signal from said base station indicating that it will enter a period of inactivity, to at least one other base station; storing at that least one current parameter(s) relating to interference between base stations and/or updating said parameter(s) for forward use. The parameter(s) may relate to interference between first base station and at least one operationally neighbouring base station and may be Background Interference Matrix (BIM) data.

Abstract: A method of sending information from a first base station to other base stations including sending information to a first plurality of the base stations at a first time; and sending said information to a different plurality of the base stations at a later time according to a predetermined sending pattern for timing sending of said information to different pluralities of the base stations at different times.

Abstract: A rule specifies a timing relation between a measurement configuration which indicates at least one subframe to measure and a reporting configuration which indicates at least one subframe in which to report. This rule is used by both user equipment UE and network to map between a downlink subframe in which channel state information is measured and an uplink subframe in which the channel state information is reported. The network may configure the UE with the measurement and reporting configurations via dedicated signaling or broadcast. If the measurement configuration is periodic and indicates multiple downlink subframes to measure the rule results in a one to one mapping of downlink to uplink subframe where less than all of the multiple downlink subframes map to an uplink subframe; if aperiodic the rule indicates a single downlink subframe to measure.

Abstract: The exemplary embodiments of the invention include a method, apparatus, and program to determine actions to be taken upon receiving overload indicators. In one exemplary embodiment of the invention, a method includes: determining if more than a first predetermined number of overload indicator messages are received within a first predetermined period of time. If such a determination is made that more than the first predetermined number of overload indicator messages are received within the first predetermined period of time is made, a value of a power output parameter is adjusted by decreasing the value of the power output parameter, and the adjusted value of the power output parameter is sent.

Abstract: According to several embodiments of the present invention, an apparatus (e.g., a UE) monitors a set of component carriers by referring to sub-bands having a sub-band size. The channel quality of the component carriers is detected, best component carriers are identified based on the channel quality, the number of the best component carriers is identified, and the subband size is varied based the identified number of the best component carriers. Identification information and channel quality information on the best component carriers may then be provided, for example to a network control element such as an eNode-B.

Abstract: A method, apparatus, and computer program for authenticating a newly activated local area base station in a cellular network is presented. The newly activated local area base station, associated with a sub-cell located within a coverage area of a wide area base station of a cellular telecommunication system, is paired with the wide area base station on the basis of information enabling identification of the wide area base station and originating from the local area base station. Then, transfer of a radio communication identifier to the local area base station is arranged over a wired connection.

Abstract: A method of co-ordinating communication between a plurality of base stations in a communication system, comprising including designating timeslots where said base stations receive and/or transit co-ordination messages to each other. The system may be an autonomous cellular system and the timeslots may be regularly spaced.

Abstract: A method and a device for data processing in a wireless communication system, in particular in a cellular system, are suggested, wherein an N-to-M control-to-data sectorization is provided to at least one mobile terminal, and wherein N corresponds to a number of control sectors and M corresponds to a number of data sectors. Furthermore, a mobile terminal for such an approach as well as a communication system comprising said device are provided.

Abstract: Embodiments provide methods, apparatuses, and software for transmitting or receiving information on at least one coverage carrier and/or at least one capacity carrier of a multi-carrier cell.

Abstract: Method and a device for data processing in a cellular network are provided, said method including the step of conveying signaling information between base stations over an air interface supporting SON and/or FSU in said cellular network. Furthermore, a communication system is suggested comprising said device.