Abstract: An apparatus of a communication network detects that a modification of a radio resource control connection for a user equipment is required. The apparatus decides, based on the detected modification requirement, if a re-establishment of a packet data convergence protocol is required for a first radio bearer and/or a second radio bearer, and indicates, in a radio resource control reconfiguration message, the first radio bearer and/or the second radio bearer for which re-establishment of the packet data convergence protocol is required. The user equipment detects, from the radio resource control reconfiguration message, that a modification of a radio resource control connection between the user equipment and the communication network is required, and re-establishes the packet data convergence protocol for the first radio bearer and/or the second radio bearer in accordance with the indication set in the radio resource control reconfiguration message.

Abstract: Various communication systems may benefit from parallel preamble transmissions. In particular, communication systems of the long term evolution of the third generation partnership project may benefit from methods and systems for parallel preamble transmission in power limited situations. A method can include determining at a physical layer of a device that a predetermined condition has been met with respect to a power limited situation. The method can also include communicating an indication that the predetermined condition has been met to a higher layer of the device based on the determining that the predetermined condition has been met.

Abstract: A technique is provided for retransmitting data in a dual connectivity network in which a mobile station (MS) is connected to a first base station (BS) via a first radio link and to a second BS via a second radio link, including sending, by a first protocol entity of the MS, a protocol data unit (PDU) to a first entity of a second protocol of the MS for transmission to the first BS via the first radio link, detecting a trigger condition at the MS associated with the PDU, and re-sending, by the first protocol entity of the MS, the PDU to a second entity of the second protocol of the MS for transmission to the second BS via the second radio link.

Abstract: The present invention addresses a method, including configuring a remote device (UE) for measurements of at least one carrier in a first frequency band which is different from a second frequency band which is licensed used for communication by said remote device, receiving a measurement report from said remote device, and deciding on the usability of the at least one measured carrier in said first frequency band for communication by said remote device. Also, a method is proposed, including measuring at least one carrier in a first frequency band which is different from a second frequency band which is licensed used for communication by a remote device, and sending, to a network transceiver device, a measurement report of the measurements. Likewise, corresponding computer program products as well as correspondingly configured devices are addressed.

Abstract: In a random access procedure, a downlink random access response indicates at least a timing advance and an explicit indication identifying one component carrier or cell (CC/Cell) of a plurality of component carriers or cells, or a group of CCs/Cells, to which the timing advance applies. The eNB or UE then operate their radio on the indicated one CC/Cell synchronous with the timing advance. In various embodiments the random access response may also indicate an uplink resource granted to the user equipment, which lies on that same one or group of CCs/Cells. The explicit indication may be a single bit indicating a timing advance group; a CC/Cell/group index whose presence in the response is indicated by a flag bit; a CC/Cell/group index in the response is known from the response's format whether it includes such an index, where the format indication can be via a bit in the response itself or RRC signaling or implicit from the RACH and cross-carrier scheduling being configured.

Abstract: Various communication systems may benefit from buffer reporting. For example, in systems in which user equipment may use dual connectivity, it may be useful to provide cross-reporting of empty or non-empty buffers to each base station. A method can include determining, at a device for a plurality of cell groups, whether there is data to transmit on each cell group. The method can also include cross-reporting, to a base station of a first cell group of the plurality of cell groups, a buffer status indication corresponding to a second cell group of the plurality of cell groups. The buffer status indication can be a binary indication corresponding to the second cell group.

Abstract: A method for providing system integration (SI) updates for a carrier aggregation system is described. The method includes, for each other component carrier (CC) of a configured set of CCs, determining a start time for the other CC when updated SI for the other CC becomes valid. A first time prior to each start time for the at least one other CC is determined. A message including the updated SI for the at least one other CC and an indication of the first time is sent on a first CC. A UE configured for a set of CCs receiving the message. For each CC of the configured set of CCs, a next time for the other CC which begins after the first time is determined and the user equipment (UE) is configured to use the updated SI for the other CC beginning at the next time. Apparatus and computer readable media are also described.

Abstract: Method and apparatus for reception of data units in a device by means of a first protocol and a second protocol are disclosed. A control function of the second protocol is informed of interruption in a control function of the first protocol. In response thereto a reordering timer of the second protocol is considered as having expired, and a state variable of the second protocol is updated to equal with a highest received state variable.

Abstract: A method including transmitting information from an apparatus regarding at least one operating band combination; selecting by the apparatus either a supported indicator or an unsupported indicator regarding the information; and transmitting the selected indicator by the apparatus.

Abstract: The exemplary embodiments of the invention provide at least a method and apparatus to perform operations including transmitting an indication of a default configuration for a sub-frame having a downlink transmission portion and an uplink transmission portion; transmitting an indication of a preferred configuration for said sub-frame; and scheduling at least one of transmissions to and transmissions from a communication device according to said preferred sub-frame configuration.

Abstract: There is provided a radio bearer to user equipment on a first component carrier by a first network node and on a second component carrier via a second network node connecting to the first network node. A control plane configuration message is transmitted that indicates an uplink component carrier of a network node that terminates an air-interface protocol linked to the first and/or the second component carrier. The uplink component carrier (it can be more than one) is then used for uplink transmission of data units that include information about reception of data units of the air-interface protocol.

Abstract: An apparatus and a method is provided, by which data is sent to and/or received from a first network control node and at least one second network control node by a carrier aggregation, uplink scheduling information is established and sending of the uplink scheduling information is managed individually for the first network control node and the at least one second network control node.

Abstract: The invention relates to an apparatus including at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: convey a radio resource reconfiguration message to a user device for carrying out secondary cell configuration for downlink data conveyance using inter-site carrier aggregation functionality, and obtain and/or convey information on completion of the secondary cell configuration and/or activate downlink data forwarding to a secondary cell node.

Abstract: The disclosure relates to use of carriers for aggregation in a wireless system. A set of carriers available for use in carrier aggregation is first determined. It is then determined if at least one carrier of the set of carriers can become unavailable for use by a communication device. An indication of a configuration type of the at least one carrier is sent to the communication device, the configuration type being indicative of different behavior during a period. The at least one carrier is maintained in the set of carriers during said period. The communication device receives the indication. If a change in the availability state of the at least one carrier is determined, the communication is operated, device in relation to the at least one carrier, according to the availability state and the received indication during said period.

Abstract: A technique is provided to control transmitting, by a mobile station (MS) that uses carrier aggregation, a message including an interoperability test (IOT) indication for one or more uplink-downlink (UL-DL) configuration combinations of time-division-duplex (TDD) radio frames for use by a primary cell and a secondary cell. In one example implementation, an IOT indication may be provided for one or more (or each) uplink-downlink configuration combinations (e.g., one IOT indication per UL-DL configuration combination). In another example implementation, an IOT indication may be provided for one or more sets of uplink-downlink configuration combinations, where each set may include a plurality of UL-DL configuration combinations.

Abstract: A method, computer program and apparatus operate when resuming data transmission/reception upon activation of a serving cell, or after a long in-device coexistence interference avoidance gap, to determine whether to report to a network access node an in-device coexistence interference indicator value and send the in-device coexistence interference indicator value to the network access node, The in-device coexistence interference indicator value is reported to the network access node for a certain period if any periodic channel quality indication resource is configured for the cell, or if an aperiodic channel quality indication for the cell is requested from the network access node.

Abstract: A method, apparatus and computer program product are provided to receive, at a user equipment, an indication providing a cell location to which the user equipment, operating in a dual connectivity mode, should transmit a buffer status report for one or more bearers, the cell location being one of a first location, a second location, or a first location and second location and in response to being triggered, causing buffer status report to be transmitted to the location provided in the indication. In some embodiments, the bearer may be a split bearer. In some embodiments, the indication may be provided by RRC signaling, MAC signaling or physical layer signaling.

Abstract: This disclosure relates to selection of transmission points in a communication system. Information of potential reference signals is sent from a network element to a mobile device to configure the mobile device for measurement of at least one received signal characteristic of the indicated potential reference signals. The mobile device then performs measurement on the indicated potential reference signals and sends to the network element information of at least one port selected by the mobile device based on the measurement.

Abstract: A technique is provided to control transmitting, by a mobile station (MS) that uses carrier aggregation, a message including an interoperability test (IOT) indication for one or more uplink-downlink (UL-DL) configuration combinations of time-division-duplex (TDD) radio frames for use by a primary cell and a secondary cell. In one example implementation, an IOT indication may be provided for one or more (or each) uplink-downlink configuration combinations (e.g., one IOT indication per UL-DL configuration combination). In another example implementation, an IOT indication may be provided for one or more sets of uplink-downlink configuration combinations, where each set may include a plurality of UL-DL configuration combinations.

Abstract: In response to determining that a time to a periodic transmission opportunity exceeds a threshold, a UE selects between using a random access procedure and the periodic transmission opportunity to transmit an uplink message. In non-limiting examples given the periodic transmission opportunity is a scheduling request opportunity which is periodic according to an interval configured by a wireless network and the uplink message comprises a scheduling request. In an embodiment the user equipment's determination and selection is conditional on it pre-determining that intended uplink data or control signaling to which the scheduling request relates is delay sensitive. If that pre-determination is that the data/signaling is not delay sensitive then it uses the scheduling request opportunity to send its scheduling request without selecting between the random access procedure and the scheduling request opportunity.