Electronic device in wireless communication system, and wireless communication method
The present application relates to an electronic device in a wireless communication system, and a wireless communication method. The electronic device in a wireless communication system according to the present application comprises: a processing circuit, configured to perform a channel detection process in one or more beam directions of an unlicensed spectrum; and a transceiver circuit, configured to transmit a random access preamble sequence in one or more beam directions in which channels are detected as idle. The electronic device and the wireless communication method of the present application can implement a random access process on an unlicensed spectrum, improve the channel detection efficiency, and reduce the delay caused by the channel detection process.
1. An electronic equipment in a wireless communication system, comprising:
circuitry configured to
perform a channel detection process on one or more beam directions of an unlicensed spectrum, each beam direction being configured by binding two or more sub-beam directions, the two or more sub-beam directions being adjacent uplink directions around the electronic equipment;
transmit a random access preamble sequence in one or more of the two or more sub-beam directions included in the one or more beam directions in which channel detection is idle, respectively;
start a random access response window to receive a random access response message;
determine a certain beam direction of the unlicensed spectrum for transmitting an uplink transmission message according to the received random access response message; and
transmit the uplink transmission message via the determined beam direction,
wherein different beam directions or different sub-beam directions correspond to different random access preamble sequences.
2. The electronic equipment according to claim 1 , wherein the circuitry is further configured to start the random access response window after the circuitry transmits the random access preamble sequence in all beam directions in which channel detection is idle; or
start the random access response window after the circuitry transmits the random access preamble sequence for a first time in a first beam direction in which channel detection is idle; or
start the random access response window for each beam direction in which channel detection is idle after the circuitry transmits the random access preamble sequence for the first time in the beam direction.
3. The electronic equipment according to claim 1 , wherein the circuitry is further configured to re-perform the channel detection process on one or more beam directions in which channel detection is busy in case of not receiving the random access response message.
4. The electronic equipment according to claim 3 , wherein the circuitry is further configured to extend a length of a timer set for each beam direction in which channel detection is busy until each beam direction is detected to be idle and to transmit the random access preamble sequence in each beam direction, and
wherein the circuitry is further configured to improve the transmission power of the random access preamble sequence in each beam direction.
5. The electronic equipment according to claim 1 , wherein the uplink transmission message comprises a Radio Resource Control (RRC) connection request message, the RRC connection request message comprising identification information of the electronic equipment and uplink data.
6. The electronic equipment according to claim 1 , wherein the circuitry is further configured to receive a transmission response message of the uplink transmission message.
7. The electronic equipment according to claim 6 , wherein the transmission response message comprises a Radio Resource Control (RRC) connection response message, the RRC connection response message comprising identification information of the electronic equipment.
8. An electronic equipment in a wireless communication system, comprising:
circuitry configured to
perform a channel detection process on one or more beam directions of an unlicensed spectrum, each beam direction being configured by binding two or more sub-beam directions, the two or more sub-beam directions being adjacent uplink directions around the electronic equipment; and
transmit a random access response message in one or more of the two or more sub-beam directions included in the one or more beam directions in which channel detection is idle, respectively, wherein the random access response message is transmitted in response to a random access preamble sequence transmitted from a user equipment,
wherein different beam directions or different sub-beam directions correspond to different random access preamble sequences.
9. The electronic equipment according to claim 8 , wherein the circuitry is further configured to receive an uplink transmission message from terminal equipment within a coverage area of the electronic equipment.
10. The electronic equipment according to claim 9 , wherein the uplink transmission message comprises a Radio Resource Control (RRC) connection request message, the RRC connection request message comprising identification information of the terminal equipment and uplink data.
11. The electronic equipment according to claim 9 , wherein the circuitry is further configured to transmit a transmission response message of the uplink transmission message to terminal equipment being allowed to access the electronic equipment, and
wherein the transmission response message comprises a Radio Resource Control (RRC) connection response message, the RRC connection response message comprising identification information of the terminal equipment being allowed to access the electronic equipment.
12. The electronic equipment according to claim 11 , wherein the circuitry is further configured to reserve the unlicensed spectrum used in transmission of the random access response message for transmitting the uplink transmission message by the terminal equipment within the coverage area of the electronic equipment; and transmitting, by the electronic equipment, the transmission response message of the uplink transmission message to the terminal equipment being allowed to access the electronic equipment.
13. A wireless communication method executed by electronic equipment in a wireless communication system, comprising:
performing a channel detection process on one or more beam directions of an unlicensed spectrum, each beam direction being configured by binding two or more sub-beam directions, the two or more sub-beam directions being adjacent uplink directions around the electronic equipment; and
transmitting a random access preamble sequence in one or more of the two or more sub-beam directions included in the one or more beam directions in which channel detection is idle, respectively;
starting a random access response window to receive a random access response message;
determining a certain beam direction of the unlicensed spectrum for transmitting an uplink transmission message according to the received random access response message; and
transmitting the uplink transmission message via the determined beam direction,
wherein different beam directions or different sub-beam directions correspond to different random access preamble sequences.