A system for channel access in Long Term Evolution (LTE) License-Assisted Access (LAA) is disclosed. The system includes a controller and a plurality of radio points. A level one radio point transmits a first reservation signal in response to a first backoff counter reaching zero. The first reservation signal indicates that the level one radio point will begin a first transmission of a first duration starting in a next subframe. A candidate level two radio point receives the first reservation signal and determines whether the candidate level two radio point received the first reservation signal with a signal to interference noise ratio (SINR) that exceeds a reservation detection threshold for the candidate level two radio point.

A method comprises operating in an idle user state; determining to exit the idle user state and enter an active user state; obtaining cell loads of cells; calculating association functions based on the cell loads; determining, from among the association functions, a first association function with a maximum value; selecting a first cell associated with the first association function as a target cell; and entering the active user state by connecting to the first cell.

A method and apparatus is disclosed herein for scheduling, load balancing and/or pilot assignment in MIMD cellular deployments (e.g., reciprority-based MIMO cellular deployments). In one embodiment, the method comprises receiving, by the central controller from at least one AP, for at least one user terminal, a size of a user set and user rate information indicative of a rate that can be provided to the user terminal when served in a group of one or more user terminals; and determining, by the central controller, based on user rate information and the user set size, an allocation of AP resources among the user terminals for the at least one AP.

The application provides a service data splitting method and apparatus. A SeNB receives distributed service data from an MeNB based on a first expected volume of distributed data, and buffers the distributed service data. The SeNB determines a data volume change status of the distributed service data when a preset period expires, where the data volume change status includes a buffered-data volume reduced state, a buffered-data volume accumulated state, and a received-data volume insufficient state. The SeNB adjusts the first expected volume of distributed data based on the data volume change status to obtain a second expected volume of distributed data. and the SeNB sends the second expected volume of distributed data to the MeNB, so that the MeNB performs splitting based on the second expected volume of distributed data.

There is disclosed a method in a first net work node (120A) operating in a split bearer environment, the first network node (120A) being communicatively connected with a second network node (120B) via an internode interface (135A, 135B). The method comprises obtaining, by the first network node (120A), expected queuing times of packet data convergence protocol, PDCP, packet data units, PDUs at the first network node (120A) and at the second network node (120B). The method comprises determining, by the first network node (120A) and according to the estimated expected queuing times, forwarding of a flow of PDCP PDUs destined for a User Equipment, UE, (100).

A user equipment (UE) receives, from a plurality of wireless access network nodes, respective indicators, where the UE is concurrently connected to the plurality of wireless access network nodes. The UE determines, based on the indicators, a split of uplink data in a buffer of the UE into a plurality of uplink data portions for transmission by the UE to the respective wireless access network nodes.

Apparatus and methods are provided to enhance BSR and LCP procedures for the dual connectivity system. In one novel aspect, the BSR is handled for each MAC entity according to one or more allocation rules. In one embodiment, the allocation rule is configured by the network. In another embodiment, the allocation rule is determined by the UE based on historic statics. In yet another embodiment, the allocation rule is determined by the UE based on information from the network. In one embodiment, the allocation rule indicates percentage of traffic allocated to each MAC entity. In another novel aspect, LCP is performed independently for each MAC entity if the split bearer is configured and the prioritized bit rate (PBR) and the bucket size duration (BSD) are signaled for each eNB. In one embodiment, separate sets of LCG variables are maintained independently for each MAC entity.

A method comprises operating in an idle user state; determining to exit the idle user state and enter an active user state; obtaining cell loads of cells; calculating association functions based on the cell loads; determining, from among the association functions, a first association function with a maximum value; selecting a first cell associated with the first association function as a target cell; and entering the active user state by connecting to the first cell.

A mobile telecommunications network includes a mobile telecommunications device (1), a plurality of transceiver nodes (5), and control means (21) operable to choose at least one of the transceiver nodes for use by the mobile telecommunications device for uplink communications and to choose at least one of the transceiver nodes for use by the mobile telecommunications device for downlink communications. The control means is operable to choose the at least one of the transceiver nodes for use by the mobile telecommunications device for uplink communications based upon at least one criterion that is independent of received signal power/path loss, such as: the number of the transceiver node antennas; the antenna gain of the or each of the transceiver node antennas; the maximum uplink transmit power allowed by the transceiver node from the mobile telecommunications device; the load of the transceiver node; the backhaul capacity of the transceiver node; and/or the interference level in the uplink to the transceiver node from the mobile telecommunications device. Arrangement for reducing interference is situations where mobile telecommunications devices engage in Device-to-Device (D2D) communication are also described.

A base station and a master communication apparatus are provided. The master communication apparatus belongs to a mobile communication system. The mobile communication system includes a plurality of data transmission apparatuses. Each of the data transmission apparatuses has a transmission path with a user equipment individually. Each transmission path has a priority degree. The master communication apparatus selects one of the transmission paths as the primary path. For each of a plurality of QoS degrees, the master communication apparatus selects a set of the transmission paths as at least one duplication path of the QoS degree according to the priority degrees and/or a plurality of communication service statuses. The master communication apparatus configures a MAC logic channel parameter and configures at least one PDCP parameter. The master communication apparatus transmits the MAC logic channel parameter and the at least one PDCP parameter to the user equipment.