Abstract: It is provided a method, including selecting one or more candidate cells for at least one of handover, cell selection, cell reselection, and initial connection setup out of a plurality of unclassified cells of a cellular communication network, wherein the plurality of unclassified cells does not include a gray cell of the cellular communication network; determining whether at least one of the unclassified cells is acceptable for the at least one of handover, cell selection, cell reselection, and initial connection setup; and, if none of the unclassified cells is acceptable for the at least one of handover, cell selection, cell reselection, and initial connection setup, choosing the gray cell as the candidate cell.

Abstract: Determining at a communication device served by a first access node whether transmissions from said first access node to said communication device are at at least a predetermined level of risk of interference by transmissions from one or more second access nodes inaccessible to said communication device; and, if so, transmitting an indication of said determination towards said first access node.

Abstract: Systems and methods for providing half duplex user equipment in a packet based radio frequency signaling communication system. User equipment with half duplex receiver and half duplex transmitter on IC providing a transceiver capability performs a cycle of receiving downlink messages for a predetermined number of sub frames, shifting to a transmit mode, transmitting uplink messages for the predetermined number of sub frames, shifting to a receive mode, and repeating the cycle of half duplex sub frames. A discontinuous reception function performs a DRX protocol wherein power is reduced to the transceiver for a period of time. A determination is made at the end of the discontinuous reception period to see if the half duplex cycle is at an uplink sub frame; if so, the end of the discontinuous reception is shifted by the user equipment to a downlink sub frame by adding a delay.

Abstract: There is proposed a mechanism allowing a compressed multi-cell channel state information feedback. In a user equipment communicating with plural base stations such as eNBs, a joint set of communication subbands is identified which includes those subbands which provide a specific communication quality level, and which are common to at least two of the plural cells. Then, a status report is generated and transmitted to the control nodes of each of the plural cells. The status report includes an information regarding the joint set of communication subbands, cell specific information including quality indicators for each cell of the plurality of cells related to a transmission using the subbands of the respective cell included in the joint set of communication subbands and quality indicators for each cell of the plurality of cells related to a transmission using all subbands of the respective cell, and joint information concerning a joint quality indicator related to a transmission using all cells.

Abstract: Methods and apparatuses for coordinating muting in a system including radio service areas of a first type and of a second type are disclosed. In a method a node providing a radio service area of the first type detects a first radio service area of the second type and determines information suitable for determining the location of the node. Said information for identifying the first radio service area and said information suitable for determining the location of the node are communicated to a controls apparatus. Upon receipt of said information for identifying and information suitable for determining the location of the node the control apparatus can coordinate muting based on the received information.

Abstract: A network element for a communication network, wherein the network element includes an input interface adapted to receive a measurement report associated with a further network element, wherein the measurement report includes an identifier value identifying the further network element and a first value of a characteristic feature, and a comparing unit adapted to compare the first value with a second value of the same characteristic feature stored for said identifier value in the network element. Furthermore, the network element includes a signal generating unit adapted to generate a signal in case the comparison of the first value and the second value indicates that an appropriately defined distance between the first value and the second value is above a predetermined threshold.

Abstract: The invention relates to a method and apparatus to adjust transmission of a closed subscriber group node for improving radio coverage when the signal power received from the strongest co-channel open-access cell e.g. macro cell and the handover rate in the node does not fulfil set conditions.

Abstract: There are provided measures for mobility in heterogeneous network environments, said measures exemplarily including configuring, at a network entity, and/or transmitting, from the network entity to one or more terminals, one or more terminal-unspecific handover qualification data defining a qualification of one or more cells for handover cell selection depending on a terminal speed, autonomously determining a terminal speed, and selecting one or more cells for handover cell selection using the received one or more handover qualification data on the basis of the determined terminal speed. Said measures may exemplarily be applied for mobility procedures in heterogeneous network environments based on LTE, LTE-Advanced, HSPA and/or UMTS radio access systems.

Abstract: A cell informs surrounding cells about an orthogonal resource allocation strategy of the informing cell so as to induce cooperative behavior among the cells. The informing cell also receives resource allocation strategies from the surrounding cells. Each cell allocates its orthogonal resources according to the mutually exchanged information. The result is to reduce interference in the system. For example, a BS informs other cells on which clusters it generates a small interference, e.g., close UEs concentrated into a particular cluster, and indicate that to its neighbors. Other cells would concentrate UEs which are on the edge to the indicating cell exactly in this cluster. This would mean an “overload invitation”, i.e. inviting the neighbors to produce overload on a particular cluster. If a cell sends an overload invitation on a sufficiently large cluster, this will automatically reduce the interference in the other clusters.

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: A method, user equipment, network device, and software product enable a user equipment to determine that at least one of several triggering criterion have been met, in which case the user equipment provides a power control headroom report on an uplink from the user equipment. The triggering criterion includes a threshold having been reached, and the threshold is adjustable via a signal to the user equipment from a base station (such as an eNodeB).

Abstract: The invention relates to apparatuses, a method, system, computer program, computer program product and computer-readable medium.

Abstract: There are provided measures for proximity reporting procedures in radio access, for example in heterogeneous network environments, said measures exemplarily including sending, to a serving base station representing a source of mobility of a user equipment, a first proximity indication indicating proximity to a microcell base station representing a target of mobility of said user equipment, said first proximity indication including a carrier according to a preceding access of said user equipment to the microcell base station, and, when detecting the microcell base station on said carrier according to the preceding access fails, sending, to the serving base station, a second proximity indication indicating proximity to the microcell base station, said second proximity indication including a carrier being different from said carrier according to the preceding access. Said measures may exemplarily be applied for mobility procedures in LTE, LTE-Advanced, HSPA and/or UMTS radio access systems.

Abstract: A technique of determining whether or not to limit the wireless transmission power of a first access node serving a first area within a second area served by a second access node, wherein the first and second access node share at least some frequency resources; wherein the determining is based on an indicator of the number of other access nodes operating within a predetermined range of said first access node that also share at least some frequency resources with said second access node and serve further areas within said second area.

Abstract: A method of allocating one or more carriers such as frequencies, to a network element (e.g. HeNBs) in a communication system, in particular a heterogeneous communication system including selecting at least one neighbouring network element (e.g. a macro base station), measuring a parameter (e.g. RSRP) from the one neighbouring network element; determining whether said parameter is above a threshold; and allocating carrier(s) to said network element as a result.

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 and a method are described by which a request for providing aperiodic channel information with respect to a selected downlink component carrier of a plurality of component carriers is received, the selected downlink component carrier is determined, channel information with respect to the selected downlink component carrier is established, and the channel information with respect to the selected downlink component carrier is sent.

Abstract: An apparatus, method, system and computer program product is configured for avoiding base station self-interference due to transmit intermodulation in carrier aggregated communication systems. Physical downlink communication channels are allocated to respective component carriers per time interval according to a communication service in which communication is performed on an aggregation of component carriers of one or more frequency band such that component carriers to be used for transmission are separated from component carriers to be used for receiving by a transmit-receive-frequency gap band. However, not all available component carriers to be used for transmission are allocated in the same time interval.

Abstract: A method, apparatus and computer program for allocating resources in a communication system. An access node sends a request for shared resources to one or more neighbouring access nodes which have a strong interference bond with the access node. The neighbouring access nodes send a response identifying the nature of their use of the shared resources. The access node then determines a new allocation of the shared resources based on the responses. This new allocation is then signalled to the neighbouring access nodes.

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.