Techniques for access control for user equipment

1 . An apparatus for wireless communications, comprising:

a transceiver;

a processor;

memory coupled with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:

receive, from a base station via the transceiver, a system information block comprising unified access control barring information for communications over an air-to-ground wireless communications network;

identify the unified access control barring information in an information element of the system information block, the information element being dedicated for UEs communicating over the air-to-ground wireless communications network;

transmit, to the base station via the transceiver, signaling based at least in part on the receiving of the system information block, the signaling indicating an access request to establish a communication link with the base station over the air-to-ground wireless communications network, wherein the transmitting of the signaling indicating the access request is based at least in part on the identifying of the unified access control barring information in the information element; and

communicate, via the transceiver, with the base station over the air-to-ground wireless communications network based at least in part on the transmitting of the signaling.

2 . The apparatus of claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to:

receive, from the base station via the transceiver, second signaling indicating one or more transmission parameters associated with the air-to-ground wireless communications network, wherein the communicating with the base station is further based at least in part on the receiving of the second signaling.

3 . The apparatus of claim 2 , wherein the one or more transmission parameters comprise a timing advance value, a subcarrier spacing, a cyclic prefix length, or any combination thereof.

4 . The apparatus of claim 1 , wherein the access request comprises a random access request of a random access channel procedure.

5 . The apparatus of claim 1 , wherein the air-to-ground wireless communications network is configured for aircraft passenger communications, air traffic management, aircraft surveillance, aircraft maintenance, or any combination thereof.

6 . An apparatus for wireless communications, comprising:

a transceiver;

a processor;

memory coupled with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:

broadcast, via the transceiver, a system information block comprising unified access control barring information for communications over an air-to-ground wireless communications network, the unified access control barring information being broadcasted in an information element of the system information block, the information element being dedicated for UEs communicating over the air-to-ground wireless communications network;

receive, from a user equipment (UE) via the transceiver, signaling based at least in part on the broadcasting of the system information block, the signaling indicating an access request to establish a communication link with the apparatus over the air-to-ground wireless communications network, wherein the receiving of the signaling indicating the access request is based at least in part on the broadcasting of the unified access control barring information in the information element; and

communicate, via the transceiver, with the UE over the air-to-ground wireless communications network based at least in part on the receiving of the signaling.

7 . The apparatus of claim 6 , wherein the instructions are further executable by the processor to cause the apparatus to:

transmit, to the UE via the transceiver, second signaling indicating one or more transmission parameters associated with the air-to-ground wireless communications network, wherein the communicating with the UE is further based at least in part on the transmitting of the second signaling.

8 . The apparatus of claim 7 , wherein the one or more transmission parameters comprise a timing advance value, a subcarrier spacing, a cyclic prefix length, or any combination thereof.

9 . The apparatus of claim 6 , wherein the access request comprises a random access request of a random access channel procedure.

10 . The apparatus of claim 6 , wherein the air-to-ground wireless communications network is configured for aircraft passenger communications, air traffic management, aircraft surveillance, aircraft maintenance, or any combination thereof.

11 . An apparatus for wireless communications:

a transceiver;

a processor;

memory coupled with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:

receive, from a base station via the transceiver, a system information block comprising unified access control barring information for communications over an air-to-ground wireless communications network;

identify the unified access control barring information in one or more information elements of a barring information element in the system information block, the one or more information elements being dedicated for UEs communicating over the air-to-ground wireless communications network;

transmit, to the base station via the transceiver, signaling based at least in part on the receiving of the system information block, the signaling indicating an access request to establish a communication link with the base station over the air-to-ground wireless communications network, wherein the transmitting of the signaling indicating the access request is based at least in part on the identifying of the unified access control barring information in the one or more information elements; and

communicate, via the transceiver, with the base station over the air-to-ground wireless communications network based at least in part on the transmitting of the signaling.

12 . An apparatus for wireless communications:

a transceiver;

a processor;

memory coupled with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:

receive, from a base station via the transceiver, a system information block comprising unified access control barring information for communications over an air-to-ground wireless communications network;

identify the unified access control barring information based at least in part on one or more access identities indicated by a barring information element in the system information block or one or more access categories indicated by the barring information element in the system information block;

transmit, to the base station via the transceiver, signaling based at least in part on the receiving of the system information block, the signaling indicating an access request to establish a communication link with the base station over the air-to-ground wireless communications network, wherein the transmitting of the signaling indicating the access request is based at least in part on the identifying of the unified access control barring information that is based at least in part on the one or more access identities or the one or more access categories; and

communicate, via the transceiver, with the base station over the air-to-ground wireless communications network based at least in part on the transmitting of the signaling.

13 . The apparatus of claim 12 , wherein the one or more access identities or the one or more access categories are dedicated for UEs communicating over the air-to-ground wireless communications network.

14 . An apparatus for wireless communications:

a transceiver;

a processor;

memory coupled with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:

receive, from a base station via the transceiver, a system information block comprising unified access control barring information for communications over an air-to-ground wireless communications network;

identify, in the system information block, second unified access control barring information dedicated for terrestrial wireless devices communicating over the air-to-ground wireless communications network;

transmit, to the base station via the transceiver, signaling based at least in part on the receiving of the system information block, the signaling indicating an access request to establish a communication link with the base station over the air-to-ground wireless communications network, wherein the transmitting of the signaling indicating the access request is based at least in part on the identifying of the second unified access control barring information; and

communicate, via the transceiver, with the base station over the air-to-ground wireless communications network based at least in part on the transmitting of the signaling.

15 . The apparatus of claim 14 , wherein the instructions are further executable by the processor to cause the apparatus to:

select the unified access control barring information or the second unified access control barring information to use for accessing the air-to-ground wireless communications network, wherein the transmitting of the signaling indicating the access request is based at least in part on the selecting of the unified access control barring information or the second unified access control barring information.

16 . An apparatus for wireless communications, comprising:

a transceiver;

a processor;

memory coupled with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:

broadcast, via the transceiver, a system information block comprising unified access control barring information for communications over an air-to-ground wireless communications network;

receive, from a user equipment (UE) via the transceiver, signaling based at least in part on the broadcasting of the system information block, the signaling indicating an access request to establish a communication link with the apparatus over the air-to-ground wireless communications network; and

communicate, via the transceiver, with the UE over the air-to-ground wireless communications network based at least in part on the receiving of the signaling, wherein:

the unified access control barring information is broadcasted in one or more information elements of a barring information element in the system information block, the one or more information elements being dedicated for UEs communicating over the air-to-ground wireless communications network, and the receiving of the signaling indicating the access request is based at least in part on the broadcasting of the unified access control barring information in the one or more information elements,

the system information block comprises one or more access identities in a barring information element of the system information block, the one or more access identities being associated with the unified access control barring information, and the receiving of the signaling indicating the access request is based at least in part on the broadcasting of the one or more access identities,

the system information block comprises one or more access categories in a barring information element of the system information block, the one or more access categories being associated with the unified access control barring information, and the receiving of the signaling indicating the access request is based at least in part on the broadcasting of the one or more access categories; or

the system information block comprises a second unified access control barring information dedicated for terrestrial wireless devices communicating over the air-to-ground wireless communications network, and the broadcasting of the second unified access control barring information is based at least in part on a congestion metric at the apparatus, a time of day, or both.

17 . The apparatus of claim 16 , wherein the one or more access identities or the one or more access categories are dedicated for UEs communicating over the air-to-ground wireless communications network.

18 . The apparatus of claim 16 , wherein the instructions are further executable by the processor to cause the apparatus to:

receive, from a second UE via the transceiver, second signaling based at least in part on the broadcasting of the second unified access control barring information, the second signaling indicating a second access request to establish a second communication link with the apparatus over the air-to-ground wireless communications network; and

communicate, via the transceiver, with the second UE over the air-to-ground wireless communications network based at least in part on the receiving of the second signaling.

19 . The apparatus of claim 16 , wherein the instructions are further executable by the processor to cause the apparatus to:

transmit, to the UE via the transceiver, second signaling indicating one or more transmission parameters associated with the air-to-ground wireless communications network, wherein the communicating with the UE is further based at least in part on the transmitting of the second signaling.

20 . The apparatus of claim 16 , wherein the one or more transmission parameters comprise a timing advance value, a subcarrier spacing, a cyclic prefix length, or any combination thereof.

21 . The apparatus of claim 16 , wherein the access request comprises a random access request of a random access channel procedure.

22 . The apparatus of claim 16 , wherein the air-to-ground wireless communications network is configured for aircraft passenger communications, air traffic management, aircraft surveillance, aircraft maintenance, or any combination thereof.