Techniques for supporting co-existence between 2-step random access and 4-step random access

A method for wireless communications by a base station (BS) in a network supporting co-existence of a first type of random access and a second type of random access, comprising:

• determining configuration information comprising one or more random access channel (RACH) occasions, the one or more RACH occasions for only the first type of random access or both the first type of random access and the second type of random access;
• transmitting the configuration information to one or more user equipments (UEs) in the network;
• and
• performing the first type of random access with at least one UE of the one or more UEs based, at least in part, on the configuration information, wherein performing the first type of random access comprises:
• receiving a first message from the at least one UE to initiate the first type of random access based, at least in part, on at least one of the one or more RACH occasions, the first message comprising a preamble and a payload;
• and
• transmitting to the at least one UE, in response to the first message, a second message associated with completion of the first type of random access.

An apparatus for wireless communication in a network supporting co-existence of a first type of random access and a second type of random access, the apparatus comprising:

• at least one processor;
• and
• memory coupled to the at least one processor, the memory comprising instructions executable by the at least one processor to cause the apparatus to:
• receive configuration information from one or more base stations in the network, the configuration information comprising one or more random access channel (RACH) occasions, the one or more RACH occasions for only the first type of random access or both the first type of random access and the second type of random access;
• and
• perform the first type of random access with at least one base station of the one or more base stations based, at least in part, on the configuration information, wherein the performing the first type of random access comprises:
• transmitting a first message to the at least one base station to initiate the first type of random access based, at least in part, on at least one of the one or more RACH occasions, the first message comprising a preamble and a payload;
• and
• receiving a second message associated with completion of the first type of random access, the second message transmitted by the at least one base station in response to the first message.

An apparatus for wireless communication in a network supporting co-existence of a first type of random access and a second type of random access, the apparatus comprising:

• at least one processor;
• and
• memory coupled to the at least one processor, the memory comprising instructions executable by the at least one processor to cause the apparatus to:
• determine configuration information comprising one or more random access channel (RACH) occasions, the one or more RACH occasions for only the first type of random access or both the first type of random access and the second type of random access;
• transmit the configuration information to one or more user equipments (UEs) in the network;
• and
• perform the first type of random access with at least one UE of the one or more UEs based, at least in part, on the configuration information, wherein performing the first type of random access comprises:
• receiving a first message from the at least one UE to initiate the first type of random access based, at least in part, on at least one of the one or more RACH occasions, the first message comprising a preamble and a payload;
• and
• transmitting to the at least one UE, in response to the first message, a second message associated with completion of the first type of random access.

An apparatus for wireless communication in a network supporting co-existence of a first type of random access and a second type of random access, the apparatus comprising:

• means for receiving configuration information from one or more base stations in the network, the configuration information comprising one or more random access channel (RACH) occasions, the one or more RACH occasions for only the first type of random access or both the first type of random access and the second type of random access;
• and
• means for performing the first type of random access with at least one base station of the one or more base stations based, at least in part, on the configuration information, wherein the means for performing the first type of random access comprises:
• means for transmitting a first message to the at least one base station to initiate the first type of random access based, at least in part, on at least one of the one or more RACH occasions, the first message comprising a preamble and a payload;
• and
• means for receiving a second message associated with completion of the first type of random access, the second message transmitted by the at least one base station in response to the first message.

An apparatus for wireless communication in a network supporting co-existence of a first type of random access and a second type of random access, the apparatus comprising:

• means for determining configuration information comprising one or more random access channel (RACH) occasions, the one or more RACH occasions for only the first type of random access or both the first type of random access and the second type of random access;
• means for transmitting the configuration information to one or more user equipments (UEs) in the network;
• and
• means for performing the first type of random access with at least one UE of the one or more UEs based, at least in part, on the configuration information, wherein the means for performing the first type of random access comprises:
• means for receiving a first message from the at least one UE to initiate the first type of random access based, at least in part, on at least one of the one or more RACH occasions, the first message comprising a preamble and a payload;
• and
• means for transmitting to the at least one UE, in response to the first message, a second message associated with completion of the first type of random access.

A computer-readable medium for wireless communication by a user equipment (UE) in a network supporting co-existence of a first type of random access and a second type of random access, the computer-readable medium comprising code, which when executed by at least one processor, causes the UE to:

• receive configuration information from one or more base stations in the network, the configuration information comprising one or more random access channel (RACH) occasions, the one or more RACH occasions for only the first type of random access or both the first type of random access and the second type of random access;
• and
• perform the first type of random access with at least one base station of the one or more base stations based, at least in part, on the configuration information, wherein the performing the first type of random access comprises:
• transmitting a first message to the at least one base station to initiate the first type of random access based, at least in part, on at least one of the one or more RACH occasions, the first message comprising a preamble and a payload;
• and
• receiving a second message associated with completion of the first type of random access, the second message transmitted by the at least one base station in response to the first message.

A computer-readable medium for wireless communication by a base station (BS) in a network supporting co-existence of a first type of random access and a second type of random access, the computer-readable medium comprising code, which when executed by at least one processor, causes the BS to:

• determine configuration information comprising one or more random access channel (RACH) occasions, the one or more RACH occasions for only the first type of random access or both the first type of random access and the second type of random access;
• transmit the configuration information to one or more user equipments (UEs) in the network;
• and
• perform the first type of random access with at least one UE of the one or more UEs based, at least in part, on the configuration information, wherein performing the first type of random access comprises:
• receiving a first message from the at least one UE to initiate the first type of random access based, at least in part, on at least one of the one or more RACH occasions, the first message comprising a preamble and a payload;
• and
• transmitting to the at least one UE, in response to the first message, a second message associated with completion of the first type of random access.