Abstract:
Technology for an eNodeB operable to configure a physical random access channel (PRACH) to enable uplink communications by a user equipment (UE) is disclosed. The eNodeB can allocate a PRACH subframe configuration for a plurality of UEs that utilizes a Block Interleaved Frequency Division Multiple Access (B-IFDMA) subframe structure. The B-IFDMA subframe structure can comprise interlaced resource blocks (RBs) assigned to each of the plurality of UEs over a selected number of symbols. The eNodeB can decode a PRACH waveform received from one of the plurality of UEs. The UE can be configured to transmit the PRACH waveform using the PRACH subframe configuration.
Abstract:
A network device (e.g., an evolved Node B (eNB), user equipment (UE) or the like) can operate to enable the signaling of a discovery reference signal (DRS) over an unlicensed band. A scheduling component can process a downlink (DL) transmission comprising a DRS transmission window (DTxW) associated with the DRS, based on a set of predetermined criteria. The DL transmission can be transmitted or received with an unlicensed carrier over a physical broadcast channel (PBCH). The predetermined criteria can comprise a network cell specific identification of a network cell associated with the DTxW to enable an initial random access to the network cell by one or more UEs.
Abstract:
Techniques for communication of a partial subframe and properties related to the partial subframe of a plurality of subframes in licensed assisted access (LAA) for an unlicensed frequency band are discussed. A network device (e.g., an evolved NodeB, or other cell network device) can generate a listen before talk (LBT) protocol in order to determine whether an unlicensed carrier of a secondary cell device is idle or busy. The evolved Node B (eNB) can communicate starting or ending partial subframes in a downlink transmission, and a user equipment (UE) can process partial subframes based on the communications and a scheduling policy.
Abstract:
Licensed assisted access (LAA) uplink (UL) transmissions can be performed using UL scheduling, enhanced node B (eNB) listen before talk (LBT), and user equipment (UE) LBT. A scheduling of a UE for UL transmission can include different procedures for a UE to perform LBT before UL transmission. These procedures can be classified as: i) a scheduled UE performing no LBT for UL transmission, ii) a scheduled UE performing fast LBT (as compared to the eNB) with a more aggressive choice of parameters than the eNB and iii) a scheduled UE performing LBT using parameters as used by the eNB for LBT. In some embodiments, the UL grant transmission by the eNB occurs in the unlicensed band after a successful LBT procedure at the eNB.
Abstract:
Techniques for mobile communication in an unlicensed frequency band are discussed. One example apparatus implementing such techniques includes a processor, transmitter circuitry, and receiver circuitry. The processor is configured to determine, for one or more user equipments (UEs), a set of listen before talk (LBT) parameters associated with an unlicensed frequency band; and determine at least one uplink grant in the unlicensed frequency band for at least one of the one or more UEs. The transmitter circuitry is configured to transmit the set of LBT parameters and the at least one uplink grant. The receiver circuitry is configured to receive transmissions over resources associated with the at least one uplink grant.
Abstract:
Radio frame configuration circuitry for use in a device of a wireless communication system is provided. The radio frame configuration circuitry uses control circuitry to select between a plurality of different time-division duplex, TDD, configurations for a radio frame having slots with a configured duration. Transceiver circuitry performs TDD communications based on selections made by the control circuitry such that an average periodicity of switching between transmission of information and reception of information during the TDD communication is the same despite switching between different ones of the plurality of different TDD configurations. The radio frame configuration circuitry can be incorporated in a UE or an eNodeB or a Peer Radio Head. A corresponding method is provided.