Abstract:
Methods related to wireless communications systems and medium access in a radio frequency band of a shared spectrum are provided. A device contends for a first reserved time interlace including a plurality of channel occupancy times (COTs). The device transmits a first communication signal in a first COT of the plurality of COTs in response to winning the first reserved time interlace. The device transmits a second communication signal in a second COT of the plurality of COTs, the second COT spaced in time from the first COT, in response to winning the first reserved time interlace.
Abstract:
In a particular implementation, a method includes receiving, at a first base station from a second base station via a backhaul communication, a scheduling message indicating one or more beams of the second base station that are scheduled for use in upcoming transmissions. The second base station is a neighboring base station of the first base station. The method further includes transmitting, from the first base station to a user equipment (UE), the scheduling message.
Abstract:
In a particular implementation, a method of wireless communication includes detecting, at a user equipment (UE) associated with a first base station, one or more interfering beams generated by a second base station. The second base station is a neighboring base station of the first base station. The method also includes transmitting, from the UE to the first base station, an interference identification message indicating the one or more interfering beams. The method further includes receiving, from the first base station, a scheduling message indicating a set of beams of the second base station that are scheduled for use in upcoming transmissions.
Abstract:
Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently identifying a receive beam for performing a listen before talk (LBT) procedure in an attempt to gain access to a transmission opportunity (TxOP) in a shared radio frequency spectrum. In particular, a wireless device may select a receive beam that corresponds to one or more transmit beams to be used in a TxOP to perform an LBT procedure in an attempt to gain access to the TxOP. In one example, the wireless device may select a receive beam for performing an LBT procedure based on the energy of each of the transmit beams to be used in a TxOP. In another example, the wireless device may select a receive beam for performing an LBT procedure if the receive beam is quasi co-located with each of the transmit beams to be used in a TxOP.
Abstract:
Methods, systems, and devices for wireless communications are described that provide staggered synchronization signal blocks (SSBs) in frequency sub-bands for beamformed wireless communications. Transmissions of SSBs and control channel transmissions (e.g., remaining minimum system information (RMSI) physical downlink control channel (PDCCH) transmissions) may use multiple transmission beams in a beam sweeping procedure. The SSB transmissions may be transmitted using transmission beams that span one frequency sub-band of a number of available frequency sub-bands, and the control channel transmissions may use transmission beams that span two or more of the frequency sub-bands. The SSB beam sweeping procedure may be performed separately during staggered, non-overlapping time periods for each frequency sub-band of the number of frequency sub-bands. Each of the of SSBs may indicate a reference timing of the base station used to identify a set of resources (e.g., a control resource set (CORESET)) that carries control channel transmissions.
Abstract:
Methods and apparatuses are provided for causing active hand-in of a device from a macrocell base station to a femto node, which can be an inter-frequency hand-in. The femto node can broadcast a beacon, which can be received and reported by a device to a source base station along with one or more parameters. The source base station can communicate a handover message to the femto node or a related femto gateway along with the one or more parameters. The femto node or femto gateway can disambiguate the intended target femto node based in part on the one or more parameters, which can include applying one or more filters. Applying the one or more filters may include applying an UL RSSI filter to the one or more femto nodes to determine whether presence of the device causes a rise in UL RSSI measured at the one or more femto nodes.
Abstract:
Methods and apparatuses are provided that include calibrating transmit power of a femto node based on measuring one or more parameters related to usage of the femto node. The femto node can temporarily increase transmit power and analyze received measurement reports to determine a transmit power calibration. The femto node can additionally measure uplink received signal strength indicators over multiple time periods following handover of a user equipment (UE) to determine whether to increase transmit power to cover the UE.
Abstract:
Techniques for operator identification on a shared communication medium are disclosed. An access point may determine an operator identifier for an operator associated with an access point and configure a set of resource elements to carry an operator identifier reference signal embedded with the operator identifier. The access point may then transmit the operator identifier reference signal using the configured set of resource elements. An access terminal may receive signaling from an access point on a set of resource elements and monitor the signaling for an operator identifier reference signal. The access terminal may then determine an operator identifier for an operator associated with the access point based on the operator identifier reference signal.
Abstract:
Methods and apparatuses are provided that include calibrating transmit power of a femto node based on measuring one or more parameters related to usage of the femto node. The femto node can temporarily increase transmit power and analyze received measurement reports to determine a transmit power calibration. The femto node can additionally measure uplink received signal strength indicators over multiple time periods following handover of a user equipment (UE) to determine whether to increase transmit power to cover the UE.
Abstract:
A method or apparatus for configuring OLPC parameters for uplink communications in a cellular wireless network includes determining an estimated number of neighbor cells deployed within radio range of a cell, and configuring OLPC parameters for uplink communications, based on the estimated number of neighbor cells. Determining the estimated number of neighbor cells may include measuring respective signal strengths of the neighbor cells using network listen functionality. At least two OLPC intermediate parameters Po and α may be selected from a data table, based on the estimated number of neighbor cells. A path loss statistic may be determined, based on UE measurement reports including path losses of UEs to itself and other cells. The OLPC parameters may be selected based on the path loss statistic and Po and α, and/or adapted based on at least one of UE power headroom reports or overload indicators received from the neighbor cells.