Abstract: Certain aspects of the present disclosure provide techniques for wireless communication by a first network entity. The techniques may generally involve generating a message with entries that represent blocks of physical resource blocks (PRBs), for transmitting reference signals over a fronthaul interface using modulation compression; transmitting the message to a second network entity via the fronthaul interface; and processing reference signals, transmitted in the blocks of PRBs on the fronthaul interface using modulation compression.

Abstract: An apparatus for wireless communication by a network entity includes a memory and one or more processors coupled to the memory. The one or more processors are configured to receive one or more configuration commands associated with a carrier having a first configuration. The one or more configuration commands each indicate a batch number. The one or more processors are further configured to store the one or more configuration commands and, based on detection of a trigger event, to perform a reconfiguration of the carrier from the first configuration to a second configuration that is based on the one or more configuration commands.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a radio unit may output capability information regarding a number of beamforming codebooks supported by the radio unit. The radio unit may obtain configuration information that configures one or more beamforming codebooks for an antenna array of the radio unit. The radio unit may communicate using the one or more beamforming codebooks. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network node may provide, to a second network node, an indication of a configuration of a beam group type that supports indications of activity statuses of beams for a frequency resource range. The first network node may provide, to the second network node, an indication of the activity statuses of the beams for the frequency resource range, the indication of the activity statuses of the beams including an indication of a first set of beams that are active and an indication of a second set of beams that are inactive. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a radio unit (RU) may transmit, to a controller of the RU, a message including an ordered list of coordinates corresponding to a plurality of antenna elements in an antenna array of the RU. The RU may receive, from the controller, an indication of one or more low-level endpoints associated with one or more activated antenna elements of the plurality of antenna elements. Numerous other aspects are described.

Abstract: Certain aspects of the present disclosure provide a method for wireless communication by a first network entity. The method generally includes generating beam forming weights (BFWs) based on channel estimates (CEs) based on precoded demodulation reference signals (DMRS), performing a reversion procedure, on the BFWs, based on precoding applied at a user equipment (UE) when transmitting the precoded DMRS, and transmitting, on a fronthaul (FH), a signal to a second network entity with beamforming using the BFWs.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a radio unit (RU) may receive, from a user equipment (UE), a demodulation reference signal (DMRS) associated with a channel. The RU may perform a channel estimation associated with the channel using the DMRS to obtain channel estimation information. The RU may transmit, to a distributed unit (DU), information that is based at least in part on the channel estimation information. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a radio unit (RU) may receive, from a distributed unit (DU), a control plane message associated with a section type that is dedicated for slot level configuration information. The control plane message may include a common section header that identifies a group of one or more endpoints, and one or more section type commands that include information associated with a slot level common configuration for the group of one or more endpoints. The RU may perform at least one of radio frequency configuration or time domain beamforming for the group of one or more endpoints based at least in part on the information included in the one or more section type commands. Numerous other aspects are described.

Abstract: Certain aspects of the present disclosure provide techniques for wireless communication by a first network entity. The techniques may generally involve generating a message having a section with entries that represent time and frequency resources for transmitting data and reference signals over a fronthaul interface using modulation compression, transmitting the message to a second network entity via the fronthaul interface, and processing data and reference signal transmissions on the fronthaul interface in accordance with the section.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, an open radio access network (O-RAN) distributed unit (O-DU) may generate, at an O-DU application that executes on the O-DU, a first message that does not make use of an O-DU accelerator of the O-DU that is in-line with the O-DU application. The O-DU may transmit, from the O-DU application to an O-RAN radio unit (O-RU), the first message via a passthrough of the O-DU accelerator, wherein the first message does not make use of the O-DU accelerator based at least in part on a payload of the first message being transferred unchanged by the O-DU accelerator to the O-RU. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a radio unit (RU) may receive, from a distributed unit (DU), a control plane message associated with a section type that is dedicated for information that applies to all resource blocks and spatial layers in a group of carriers or band sectors, wherein the control plane message includes information that applies to all resource blocks and spatial layers in an indicated group of carriers or band sectors. The RU may perform beamforming for one or more communications with a user equipment (UE) based at least in part on the information included in the control plane message. Numerous other aspects are described.

Abstract: A wireless communication system base station includes a number of channel unit boards, each including multiple channel elements for providing processing operations for signals assigned to multiple carriers of the system. A given channel unit board includes a multiplexer which is operative to implement multi-carrier/multi-sector channel pooling by assigning a given one of the channel elements of that board to any one of the multiple carriers of the system. For example, the multiplexer in the given channel board may be operative to connect the channel elements of that board to I/Q signal buses associated with different system carriers. The I/Q signal bus for each of the carriers is then combined on the given board with corresponding signals from other boards. The invention allows each of N channel elements of the given channel unit board to be assigned to a particular one of up to N carriers of the system, thereby providing substantially improved flexibility in terms of system configuration.

Abstract: A method of recovering transmitted symbols in a receiver of a spread spectrum system, comprising: receiving a signal including multi-path components associated with transmitted symbols; de-spreading successive separate portions of the received signal to provide a symbol estimate based on each multipath component, wherein the de-spreading step comprises determining at least one partial estimate of at least one transmitted symbol for an at least one partial multi-path component contained in a separate portion; and summing the partial estimates of separate portions corresponding to a same transmitted symbol.

Abstract: According to the present invention there is provided a method of recovering transmitted symbols in the receiver of a spread spectrum system, comprising: receiving a signal including multi-path components associated with a transmitted symbol; de-spreading successive portions of the received signal to provide a symbol estimate based on each multi-path, wherein at least one multi-path of the transmitted symbol is contained in separate portions, the de-spreading step further comprising determining a partial estimate of the transmitted symbol for the at least one multi-path component based on each part of the multi-path contained in each separate portion; and summing said partial estimates.