Abstract: A secondary base station method, secondary base station, master base station method, master base station and computer program products are disclosed. The secondary base station method comprises: upon it being determined that the secondary base station is to perform a protocol layer re-establishment, permitting continued transmission of data packets to user equipment over the secondary base station bearer. In this way, service interruption can be minimized since pending data packets may continue to be transmitted while the re-establishment takes, which minimizes service interruption and reduces the number of data packets which will need to be retransmitted.

Abstract: A method and apparatus for power management in a cellular network for handling multi-carrier operation in case cellular communication services and proximity communication services occur simultaneously is proposed. A Power Headroom Report is sent by a User Equipment. The Power Headroom Report at least contains a power reduction measure reflecting a power reduction if the User Equipment performs proximity service communication.

Abstract: The present invention relates to coverage enhancement in a cellular network, e.g. for coverage enhancement in a Multimedia Broadcast Multicast Service application in an LTE cellular network. At least two identifiers, e.g. Temporary Mobile Group Identifiers, are assigned to the same service and the service is transmitted repeatedly over MBMS.

Abstract: A method performed at a user equipment of requesting resource from a net-work node within a wireless network for transmitting uplink data, the uplink data being data that is to be transmitted as a direct communication directly between the user equipment and user equipment within at least one of a plurality of groups of user equipment of which the user equipment is a member. The method comprises: generating a status report the status report providing an indication of an amount of the uplink data and an indication of least one group to which the uplink data is to be transmitted; transmitting an indication of a priority of the at least one group towards the network node; and transmitting the status report towards the network node.

Abstract: A user equipment method, user equipment, a network node method, a network node and computer program products are disclosed. The user equipment method for device-to-device communication comprises: upon requiring to perform device-to-device communication with user equipment from a plurality of groups, transmitting a scheduling announcement for each of the plurality of groups, each scheduling announcement identifying resources within which data intended for user equipment belonging to each group is to be transmitted. In this way, the user equipment can be perform device-to-device communications with different groups at the same time. In particular, the user equipment can choose the target groups that it wants to provide the device-to-device data to and is able to perform simultaneous transmissions of that data to those multiple groups.

Abstract: Embodiments of the present invention provide a method for reporting power headroom in support of multiple link connections.

Abstract: Embodiments of the present invention relate to a method and apparatus for performing measurement enhancement for a cell in an off state. The method executed at a base station side comprises: transmitting a configuration message to a first device, wherein the configuration message indicates a specific time within a given time interval which can be used to perform measurement for one or more cells in the off state; and receiving a measurement report for the cell from the first device, wherein the measurement report is based on a result of a measurement performed by the first device for the cell at the specific time. Embodiments of the present invention further provide a method of UE corresponding thereto and a corresponding apparatus. The methods and apparatuses according to embodiments of the present invention can bring about enhanced small cell measurement so as to enable more effective use of the resources.

Abstract: A computer program, network node and method performed at a secondary network node within a wireless communication network supporting dual connectivity, such that a user equipment may communicate with a master network node and a secondary network node at a same time, the secondary network node supporting a plurality of cells. The method comprising: determining at the secondary network node that a configuration of one of the plurality of cells as a special cell for the user equipment such that the special cell provides predetermined functionality should be transferred to another one of the plurality of cells; and in response to the determining step, transmitting a request for a change in special cell towards the master network node.

Abstract: Embodiments of the present invention provide methods and devices for secondary base station change in a dual connectivity system. The method comprises: determining, at a secondary base station, to initiate secondary base station change procédure; sending, at the secondary base station, a secondary base station change request to a master base station based on the détermination; and receiving a secondary base station change request acknowledgement from the master base station, wherein the secondary base station change procedure is initiated by the secondary base station.

Abstract: A user equipment method, user equipment, a base station method, a base station and computer program products are disclosed. The user equipment method, comprises in response to a radio resource control connection re-establishment procedure being initiated when operating in a dual-connectivity mode, retaining configuration information of at least one data bearer utilised in the dual-connectivity mode for subsequent re-use. In this way, rather than losing all the data radio bearer configuration during the RRC connection re-establishment procedure, some of this bearer configuration is retained so that it may be subsequently re-used, thereby improving the speed and efficiency of the RRC connection re-establishment procedure.

Abstract: The present invention provides a method, base station, and dual connectivity system for providing service to handover of a user equipment. Through releasing and adding operations of the secondary base station and solving the data transmission issue in the process, the present invention provides a solution for handover of the user equipment between cells or base stations in a plurality of cases in a dual connectivity system.

Abstract: The invention provides a method of refreshing a key in a user plane architecture 1A based dual connectivity situation. According to an embodiment of the present invention, a method, in a secondary eNB in a dual connectivity communication scenario, of refreshing a key, is provided, wherein a user equipment, a master eNB and a secondary eNB form dual connectivity, a user plane architecture 1A is applied for the dual connectivity, and the master eNB uses a master eNB key, the secondary eNB uses a secondary eNB key, the method comprises following steps:—receiving a new secondary eNB key from the master eNB;—receiving a key fresh complete from the master eNB, which indicates the user equipment has refreshed the secondary eNB key;—implementing a random access procedure with the user equipment; and—refreshing the secondary eNB key with the new secondary eNB key, and implementing data transmission with the user equipment with the new secondary eNB key.

Abstract: A user equipment method, user equipment, a base station method, a base station and computer program products. The user equipment method, comprises: on reception of a trigger instructing modification of an access stratum radio bearer, preventing release of an associated non-access stratum bearer. In this way, when an access stratum or data radio bearer is instructed to be modified (as may occur when security credentials for that bearer need to be updated), the associated non-access stratum bearer may be re tamed in order to allow a update in security credentials to occur without disrupting communication or losing data.

Abstract: The invention provides solutions for enhancing PHR in a communication system of a dual connectivity. The solutions comprise the design of PHR MAC CE format for Se NB, the calculation of PHR_NT, and the design of including PHR_T and PHR_NT in the MAC PDU transmitted in the e_NBJ.

Abstract: An objective of the present invention is to provide a method and apparatus for processing RLC/PDCP entities at a user equipment in a dual connectivity system; when an uplink radio bearer is reconfigured from a first uplink bearer type between a user equipment and a primary and/or secondary base station into a second uplink bearer type between the user equipment and the secondary and/or primary base station, an RLC entity of the user equipment performing first uplink bearer type between a user equipment corresponding processing; the RLC entity transmitting indication information to a corresponding PDCP entity based on the processing; the PDCP entity performing processing based on the indication information, and transmitting PDCP PDU data corresponding to the uplink radio bearer through RLC entity corresponding to the second uplink bearer type.

Abstract: The invention discloses a method, at a primary e NB, of measurement enhancement on a turned-off small cell for dual connectivity, the method including: obtaining OFF-status information of the turned-off small cell from a secondary e NB; transmitting the OFF-status information to a UE; receiving a measurement report transmitted from the UE about the turned-off small cell; deciding to configure the UE with the dual connectivity; transmitting a request to the secondary e NB to set up the dual connectivity; and receiving an acknowledgement command of the secondary e NB, wherein when the acknowledgement command includes an acknowledgement of the secondary e NB for accepting setting up of the dual connectivity, the method further includes: transmitting RRC connection reconfiguration information to the UE, so that the UE accesses the secondary e NB and sets up the dual connectivity according to the reconfiguration information.

Abstract: Embodiments provide apparatuses, methods and computer programs for a mobile transceiver and a base station transceiver, a mobile transceiver, a base station transceiver and a mobile communication system. The apparatus for the mobile transceiver in a mobile communication system comprises means for receiving information on a periodic measurement configuration for an inter-frequency measurement from a base station transceiver of the mobile communication system on a first frequency layer. The inter-frequency measurement refers to a repetitive measurement on a second frequency layer with a repetition cycle, which is such that the mobile transceiver , when moving at a velocity below a velocity threshold, is located in a coverage area of another base station transceiver on the second frequency layer for at least two repetition cycles.

Abstract: The present invention relates to a method for providing Multicast Broadcast Services continuity towards a user equipment part of a wireless network, said Multicast Broadcast Services being supported by at least one Multicast Broadcast Services bearer, said wireless network further providing Unicast Services to said user equipment, said Unicast Services being supported by at least one Unicast Service bearer, said Multicast Broadcast Services bearers being multiplexed with Unicast Services bearers on at least one carrier. According to the present invention, the method comprises the steps of prioritizing said Multicast Broadcast Services over said Unicast services.

Abstract: The present invention relates to a method and an apparatus for uplink transmission power control (TPC) of multi-link connections. The method for uplink TPC of multi-link connections according to an embodiment of the present invention includes: a user equipment (UE) receiving a cell path loss compensating factor and a reference power level of each carrier of each connection in the multi-link connections, receiving an uplink transmission power adjustment amount of each carrier of each connection in the multi-link connections, and measuring a path loss of each carrier of each connection in the multi-link connections. According to the received cell path loss compensating factor, reference power level, and uplink transmission power adjustment amount, and the measured path loss, the UE calculates uplink transmission power of each carrier of each connection in the multi-link connections, and transmits data based on the uplink transmission power.

Abstract: Embodiments of the present invention disclose a flow control method and apparatus for an MeNB and an SeNB supporting radio bearer split in a dual connectivity system. The method comprises: receiving information related to an SeNB; and performing flow control with the SeNB based on the information and information related to the MeNB. Through the embodiments of the present invention, the flow control not only considers performing flow control according to middle-and-long terms channel and load conditions, but also cause the flow control to consider the rapid change of the channel and load through feeding back the transmission/service state.