Random Access in a Wireless Communication Network

A method performed by a wireless device, the method comprising:

• determining that no resources configured for random access on a link support a minimum gap requirement of the wireless device, wherein the minimum gap requirement is a capability of the wireless device for supporting a minimum gap in time between an end of a transmission of a random access preamble and a start of a transmission of a payload on a Physical Uplink Shared Channel, PUSCH, and wherein the link is deployed on an unlicensed frequency carrier;
• and
• based on said determining:
• transmitting a random access preamble using the resources configured for random access on the link, but waiting to transmit a payload until the wireless device receives a random access response in response to the random access preamble;
• or
• delaying random access on the link until resources configured for random access on the link support the minimum gap requirement of the wireless device;
• or
• selecting to perform random access on a different link.

A wireless device comprising:

• communication circuitry;
• and
• processing circuitry configured to:
• determine that no resources configured for random access on a link support a minimum gap requirement of the wireless device, wherein the minimum gap requirement is a capability of the wireless device for supporting a minimum gap in time between an end of a transmission of a random access preamble and a start of a transmission of a payload on a Physical Uplink Shared Channel, PUSCH, and wherein the link is deployed on an unlicensed frequency carrier;
• and
• based on determining that no resources configured for random access on the link support the minimum gap requirement of the wireless device:
• transmit a random access preamble using the resources configured for random access on the link, but waiting to transmit a payload until the wireless device receives a random access response in response to the random access preamble;
• or
• delay random access on the link until resources configured for random access on the link support the minimum gap requirement of the wireless device;
• or
• select to perform random access on a different link.

A computer-readable storage medium on which is stored instructions which, when executed by at least one processor of a wireless device, causes the wireless device to:

• make a determination that no resources configured for random access on a link support a minimum gap requirement of the wireless device, wherein the minimum gap requirement is a capability of the wireless device for supporting a minimum gap in time between an end of a transmission of a random access preamble and a start of a transmission of a payload on a Physical Uplink Shared Channel, PUSCH, and wherein the link is deployed on an unlicensed frequency carrier;
• and
• based on said determination:
• transmit a random access preamble using the resources configured for random access on the link, but wait to transmit a payload until the wireless device receives a random access response in response to the random access preamble;
• or
• delay random access on the link until resources configured for random access on the link support the minimum gap requirement of the wireless device;
• or
• select to perform random access on a different link.