Terminal device, base station device, radio communication method, and integrated circuit
AssigneeSharp Kabushiki Kaisha
InventorsYasuyuki Kato, Katsunari Uemura, Shohei Yamada, Hidekazu Tsuboi
Life of this patent
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Abstract
A terminal device configured to communicate with a base station device receives random access common information including information on a random access response reception and information on a contention resolution message reception for each repetition level from the base station device, selects a random access preamble corresponding to a repetition level using the random access common information, and selects a contention resolution timer value corresponding to the repetition level selected from the random access common information.
Claims8
A terminal device configured to perform a random access procedure with a base station device, the terminal device comprising:
- a processor;
- and
- a memory,
- wherein the memory stores instructions that causes the processor to:
- receive random access common information including information on a random access response reception and information on a contention resolution timer value for each repetition level from the base station device;
- select, based on the random access common information, a contention resolution timer value corresponding to a selected repetition level;
- and
- perform a repetitive transmission of a message 3 based on the selected repetition level, wherein the contention resolution timer is started at a last transmission of the repetitive transmission of the message 3, and
- an expiration value of the contention resolution timer is configured according to a number of repetitive transmissions of a random access preamble.
A base station device configured to perform a random access procedure with a terminal device, comprising:
- a processor;
- and
- a memory,
- wherein the memory stores instructions that causes the processor to:
- generate random access common information including information on a random access response reception and information on a contention resolution timer value for each repetition level;
- and
- transmit the random access common information to the terminal device,
- wherein a repetitive transmission of a message 3 is performed by the terminal device based on a repetition level selected by the terminal device,
- the contention resolution timer is started at a last transmission of the repetitive transmission of the message 3, and
- an expiration value of the contention resolution timer is configured according to a number of repetitive transmissions of a random access preamble.
A communication method of a terminal device configured to perform a random access procedure with a base station device, comprising the steps of:
- receiving random access common information including information on a random access response reception and information on a contention resolution timer value for each repetition level from the base station device;
- selecting, based on the random access common information, a contention resolution timer value corresponding to a selected repetition level;
- and
- performing a repetitive transmission of a message 3 based on the selected repetition level, wherein the contention resolution timer is started at a last transmission of the repetitive transmission of the message 3, and
- an expiration value of the contention resolution timer is configured according to a number of repetitive transmissions of a random access preamble.
A communication method of a base station device configured to perform a random access procedure with a terminal device, comprising the steps of:
- generating random access common information including information on a random access response reception and information on a contention resolution timer value for each repetition level;
- and
- transmitting the random access common information to the terminal device,
- wherein a repetitive transmission of a message 3 is performed by the terminal device based on a repetition level selected by the terminal device,
- the contention resolution timer is started at a last transmission of the repetitive transmission of the message 3, and
- an expiration value of the contention resolution timer is configured according to a number of repetitive transmissions of a random access preamble.
An integrated circuit applied to a terminal device configured to perform a random access procedure with a base station device, comprising:
- a unit configured to receive random access common information including information on a random access response reception and information on a contention resolution timer value for each repetition level from the base station device;
- a unit configured to select, based on the random access common information, a contention resolution timer value corresponding to a selected repetition level;
- and
- a unit configured to perform a repetitive transmission of a message 3 based on the selected repetition level,
- wherein the contention resolution timer is started at a last transmission of the repetitive transmission of the message 3, and
- an expiration value of the contention resolution timer is configured according to a number of repetitive transmissions of a random access preamble.
An integrated circuit applied to a base station device configured to perform a random access procedure with a terminal device, comprising:
- a unit configured to generate random access common information including information on a random access response reception and information on a contention resolution timer value for each repetition level;
- and
- a unit configured to transmit the random access common information to the terminal device,
- wherein a repetitive transmission of a message 3 is performed by the terminal device based on a repetition level selected by the terminal device,
- the contention resolution timer is started at a last transmission of the repetitive transmission of the message 3, and
- an expiration value of the contention resolution timer is configured according to a number of repetitive transmissions of a random access preamble.
Dependencies are inferred from the claim text.