IP Library › Granted Patent US 12690070
Granted Patent B2
US 12690070 · App. 18/289,611 · Granted Jul 21, 2026

Terminal apparatus, base station apparatus, and communication method

Inventors: Tomoki Yoshimura (Sakai City, JP); Toshizo Nogami (Sakai City, JP); Takahisa Fukui (Sakai City, JP); Shoichi Suzuki (Sakai City, JP); Daiichiro Nakashima (Sakai City, JP); Wataru Ouchi (Sakai City, JP); Huifa Lin (Sakai City, JP)
Assignee: SHARP KABUSHIKI KAISHA
H04W74/0833H04L1/0009
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Quick Facts
Patent No.
US 12690070
App. No.
18/289,611
Granted
Jul 21, 2026
Kind
B2
Abstract

A first PRACH resource type is selected in a case that a value related to a received power of a downlink signal is lower than a threshold, a second PRACH resource type is selected in a case that the value related to the received power is larger than or equal to the threshold, an uplink grant included in a PDSCH is interpreted using a first rule in a case that the PRACH is transmitted in the first PRACH resource type, the uplink grant included in the PDSCH is interpreted using a second rule in a case that the PRACH is transmitted in the second PRACH resource type, and the uplink grant included in the PDSCH is interpreted using the second rule in a case that the threshold is not configured in an RRC layer processing circuitry.

Claims (10)

1 . A terminal apparatus comprising:

a medium access control (MAC) layer processing circuitry configured to:

select one of a first Physical Random Access CHannel (PRACH) resource type and a second PRACH resource type, wherein the second PRACH resource type is selected in a case that the first PRACH resource type is not provided for an uplink Bandwidth Part (BWP) used for a random access procedure; and

a physical layer processing circuitry configured to;

use a first rule to derive information from a value of a Modulation and Coding Scheme (MCS) field included in a random access response grant of the random access procedure in a case that the first PRACH resource type is selected, or use a second rule to derive the information in a case that the second PRACH resource type is selected, the second rule being different from the first rule, and

based on the second rule, determine that the value of the MCS field indicates a number of repetitions of a Physical Uplink Shared CHannel (PUSCH) scheduled by the random access response grant in a case that the second PRACH resource type is selected.

2 . A communication method performed by a terminal apparatus, the communication method comprising:

selecting one of a first Physical Random Access CHannel (PRACH) resource type and a second PRACH resource type, wherein the second PRACH resource type is selected in a case that the first PRACH resource type is not provided for an uplink Bandwidth Part (BWP) used for a random access procedure;

using a first rule to derive information from a value of a Modulation and Coding Scheme (MCS) field included in a random access response grant of the random access procedure in a case that the first PRACH resource type is selected, or using a second rule to derive the information in a case that the second PRACH resource type is selected, the second rule being different from the first rule; and

based on the second rule, determining that the value of the MCS field indicates a number of repetitions of a Physical Uplink Shared CHannel (PUSCH) scheduled by the random access response grant in a case that the second PRACH resource type is selected.