Apparatuses and methods for base stations with uptilt antennas for aerial vehicles

A method of wireless communication performed by a base station of a mobile network, comprising:

• transmitting system information corresponding to an aerial cell of the mobile network or a cell having at least one aerial sector, the aerial cell or the at least one aerial sector being formed by one or more uptilt beams of the base station, wherein the first system information comprises a first portion of a plurality of synchronization signal blocks (SSBs), the first portion of the plurality of SSBs being configured for the aerial cell or for the at least one aerial sector, wherein transmitting the system information comprises:
• transmitting, at a first power level, a first SSB of the plurality of SSBs;
• and
• transmitting, at a second power level, a second SSB of the plurality of SSBs, the first power level being different than the second power level;
• performing, according to the system information, a random access channel (RACH) procedure with an aerial user equipment (UE);
• and
• establishing, via the aerial cell or the at least one aerial sector, a communications link with the aerial UE.

A method of wireless communication performed by a base station of a mobile network, comprising:

• transmitting system information corresponding to an aerial cell of the mobile network or a cell having at least one aerial sector, the aerial cell or the at least one aerial sector being formed by one or more uptilt beams of the base station, wherein the first system information comprises a first portion of a plurality of synchronization signal blocks (SSBs), the first portion of the plurality of SSBs being configured for the aerial cell or for the at least one aerial sector, wherein transmitting the system information comprises:
• transmitting, via a first uptilt beam of the one or more uptilt beams, an aerial SSB of the first portion of the plurality of SSBs, the aerial SSB indicating a channel state information-reference signal (CSI-RS) configuration for the aerial cell or for the at least one aerial sector;
• and
• transmitting, via a second uptilt beam of the one or more uptilt beams and according to the CSI-RS configuration, a CSI-RS, the first uptilt beam having a wider shape than the second uptilt beam;
• performing, according to the system information, a random access channel (RACH) procedure with an aerial user equipment (UE);
• and
• establishing, via the aerial cell or the at least one aerial sector, a communications link with the aerial UE.

A method of wireless communication performed by a base station of a mobile network, comprising:

• transmitting system information corresponding to an aerial cell of the mobile network or a cell having at least one aerial sector, the aerial cell or the at least one aerial sector being formed by one or more uptilt beams of the base station, wherein a serving cell of the aerial UE is the aerial cell or the cell having the at least one aerial sector;
• transmitting serving cell system information of the serving cell, the serving cell system information indicating first bias offsets of the serving cell, the first bias offsets being configured to prioritize selection of aerial cells or aerial sectors by the aerial UE;
• transmitting neighbor cell system information of one or more neighbor cells, the neighbor cell system information indicating second bias offsets of the one or more neighbor cells, the second bias offsets being configured to prioritize selection of the aerial cells or the aerial sectors by the aerial UE;
• performing, according to the system information, a random access channel (RACH) procedure with an aerial user equipment (UE);
• establishing, via the aerial cell or the at least one aerial sector, a communications link with the aerial UE;
• and
• performing a cell reselection procedure in response to a determination based at least on cell reselection criteria calculated using the first bias offsets and the second bias offsets.

A method of wireless communication performed by a base station of a mobile network, comprising:

• transmitting system information corresponding to an aerial cell of the mobile network or a cell having at least one aerial sector, the aerial cell or the at least one aerial sector being formed by one or more uptilt beams of the base station;
• transmitting second system information of one or more neighbor cells, the second system information indicating at least one of an intra-frequency cell reselection priority or an inter-frequency cell reselection priority, the at least one of the intra-frequency cell reselection priority or the inter-frequency cell reselection priority being configured to prioritize selection of aerial cells or aerial sectors by the aerial UE;
• performing, according to the system information, a random access channel (RACH) procedure with an aerial user equipment (UE);
• establishing, via the aerial cell or the at least one aerial sector, a communications link with the aerial UE;
• and
• performing a cell reselection procedure in response to a determination based on the at least one of the intra-frequency cell reselection priority or the inter-frequency cell reselection priority.

An apparatus for wireless communication, comprising:

• a processing system configured to:
• transmit first system information corresponding to an aerial cell of a mobile network or a cell having at least one aerial sector, the aerial cell or the at least one aerial sector being formed by one or more uptilt beams of the apparatus;
• transmit second system information corresponding to a terrestrial cell of the mobile network, the terrestrial cell being formed by one or more downtilt beams of the apparatus, the second system information being separate from the first system information, wherein the second system information includes a plurality of terrestrial synchronization signal blocks (SSBs), the plurality of terrestrial SSBs being configured for the terrestrial cell of the mobile network, wherein to transmit the second system information, the processing system is configured to:
• transmit a terrestrial SSB of the plurality of terrestrial SSBs;
• and
• transmit a channel state information-reference signal (CSI-RS) according to a CSI-RS configuration, the CSI-RS configuration being based at least on the terrestrial SSB;
• perform, according to the first system information, a random access channel (RACH) procedure with an aerial user equipment (UE);
• and
• establish, via the aerial cell or the at least one aerial sector, a communications link with the aerial UE.

A method of wireless communication performed by an aerial user equipment (UE) in a mobile network, comprising:

• receiving, from the mobile network, first system information corresponding to an aerial cell of the mobile network or a cell having at least one aerial sector, the aerial cell or the at least one aerial sector being formed by one or more uptilt beams of a base station of the mobile network, the first system information being separate from second system information corresponding to a terrestrial cell of the mobile network, the terrestrial cell being formed by one or more downtilt beams of the base station, wherein the first system information comprises a first portion of a plurality of synchronization signal blocks (SSBs), the first portion of the plurality of SSBs being configured for the aerial cell or for the at least one aerial sector, and the second system information comprises a second portion of the plurality of SSBs, and wherein receiving the first system information comprises:
• receiving a first SSB of the plurality of SSBs, the first SSB having been transmitted a first power level;
• and
• receiving a second SSB of the plurality of SSBs, the second SSB having been transmitted a second power level, the first power level being different than the second power level;
• performing, according to the first system information, a random access channel (RACH) procedure with the mobile network;
• and
• establishing, via the aerial cell or the at least one aerial sector, a communications link with the mobile network.

An aerial user equipment (UE) for wireless communication, comprising:

• a processing system configured to:
• receive, from a mobile network, first system information corresponding to an aerial cell of the mobile network or a cell having at least one aerial sector, the aerial cell or the at least one aerial sector being formed by one or more uptilt beams of a base station of the mobile network, the first system information being separate from second system information corresponding to a terrestrial cell of the mobile network, the terrestrial cell being formed by one or more downtilt beams of the base station, wherein the first system information comprises a first portion of a plurality of synchronization signal blocks (SSBs), the first portion of the plurality of SSBs being configured for the aerial cell or for the at least one aerial sector, and the second system information comprises a second portion of the plurality of SSBs, and wherein to receive the first system information, the processing system is configured to:
• receive a first SSB of the plurality of SSBs, the first SSB having been transmitted a first power level;
• and
• receive a second SSB of the plurality of SSBs, the second SSB having been transmitted a second power level, the first power level being different than the second power level;
• perform, according to the first system information, a random access channel (RACH) procedure with the mobile network;
• and
• establish, via the aerial cell or the at least one aerial sector, a communications link with the mobile network.