Method and Apparatus for Physical Uplink Shared Channel Format Adaptation

A method for transmitting a random access preamble and a physical uplink shared channel (PUSCH), the method performed by a User Equipment (UE) and comprising:

• determining a resource size to be used to contain the PUSCH, the resource size being one of a set of predetermined sizes;
• identifying a resource to be used from a predetermined set of resources, wherein:
• the resource corresponds to the determined resource size, and
• the respective resources in the set are identified by respective first indices and occupy respective distinct sets of OFDM symbols and subcarriers;
• identifying a physical random access channel (PRACH) preamble associated with a second index that corresponds to the first index that identifies the resource;
• and
• transmitting the identified PRACH preamble and the PUSCH in the identified resource.

A method for transmitting a random access preamble and a physical uplink shared channel (PUSCH), the method performed by a User Equipment (UE) and comprising:

• determining a modulation state and a code rate to be used for the PUSCH;
• determining a parameter for transmitting the PUSCH based on the modulation state and the code rate;
• identifying a resource to be used from a predetermined set of resources, wherein the respective resources in the set are identified by respective first indices and occupy respective distinct sets of OFDM symbols and subcarriers;
• identifying a physical random access channel (PRACH) preamble associated with a second index that corresponds to the first index that identifies the resource;
• and
• transmitting the identified PRACH preamble and the PUSCH in the identified resource using the determined parameter.

A User Equipment (UE) configured to communicate with a network node, the UE comprising:

• a radio interface;
• and
• processing circuitry operably coupled to the radio interface, whereby the processing circuitry and the radio interface are configured to:
• determine a resource size to be used to contain a physical uplink shared channel (PUSCH), the resource size being one of a set of predetermined sizes;
• identify a resource to be used from a predetermined set of resources, wherein:
• the resource corresponds to the determined resource size, and
• the respective resources in the set are identified by respective first indices and occupy respective distinct sets of OFDM symbols and subcarriers;
• identify a physical random access channel (PRACH) preamble associated with a second index that corresponds to the first index that identifies the resource;
• and
• transmit the identified PRACH preamble and the PUSCH in the identified resource.