Granted Patent B2

US 11,716,754 · App. 17/660,954 · Granted Aug 1, 2023

Inventors: Masato Fujishiro (Yokohama, JP); Chiharu Yamazaki (Tokyo, JP); Henry Chang (San Diego, CA)

Assignee: KYOCERA Corporation

H04W74/002H04W52/0229H04W72/21H04W72/23H04W74/0833H04W76/27

Abstract

Claims (14)

1. A communication control method used in a user equipment that performs early data transmission in which uplink user data is transmitted during a random access procedure, the method comprising:

receiving from a base station, a first timer value for a random access procedure without the early data transmission and a second timer value for a random access procedure with the early data transmission;

selecting the second timer value in response to determining that the user equipment performs the early data transmission; and

starting a timer configured with the second timer value in response to transmitting the uplink data by the early data transmission.

2. The communication control method according to claim 1 , wherein

the timer is a timer that defines a maximum waiting time from when the user equipment transmits a Msg3 message until a Msg4 message is received in the random access procedure.

3. A user equipment that performs early data transmission in which uplink user data is transmitted during a random access procedure, the user equipment comprising a processor and a memory, the processor configured to:

receive from a base station, a first timer value for a random access procedure without the early data transmission and a second timer value for a random access procedure with the early data transmission;

select the second timer value in response to determining that the user equipment performs the early data transmission; and

start a timer configured with the second timer value in response to transmitting the uplink data by the early data transmission.

4. An apparatus for controlling a user equipment that performs early data transmission in which uplink user data is transmitted during a random access procedure, comprising a processor and a memory, the processor configured to:

receive from a base station, a first timer value for a random access procedure without the early data transmission and a second timer value for a random access procedure with the early data transmission;

select the second timer value in response to determining that the user equipment performs the early data transmission; and

start a timer configured with the second timer value in response to transmitting the uplink data by the early data transmission.

Assignments (1)

Continuity (10)

Cited By (2)

US 12,634,805 US 12,739,902