Method for transmitting and receiving signal in wireless communication system, and apparatus for supporting same
Various embodiments relate to a next generation wireless communication system for supporting a data transmission rate higher than that of a 4 th generation (4G) wireless communication system. According to various embodiments, a method for transmitting and receiving a signal in a wireless communication system, and a device for supporting same can be provided, and other various embodiments can be provided.
1. A method performed by an apparatus, the method comprising:
receiving a synchronization signal block (SSB) from a base station;
performing a random access procedure; and
obtaining information related to timing advance (TA),
wherein the random access procedure comprises:
transmitting a first message including a physical random access channel (PRACH) preamble based on the SSB; and
receiving a second message including information related to a random access response (RAR) after transmitting the first message,
wherein the TA is obtained based on a sum of:
(i) a difference between a reception time of the SSB at the apparatus and a transmission time of the first message at the apparatus; and
(ii) a difference between a transmission time of the SSB at the base station and a reception time of the first message at the base station,
wherein the second message further includes information related to a timing offset and information related to a timing offset,
wherein the timing offset is related to a downlink (DL) uplink (UL) switching time of the base station, and
wherein the TA is obtained based on:
the timing offset being applied to the sum of (i) the difference between the reception time of the SSB at the apparatus and the transmission time of the first message at the apparatus, and (ii) the difference between the transmission time of the SSB at the base station and the reception time of the first message at the base station.
2. The method of claim 1 , further comprising:
receiving information for configuring the TA to be obtained based on the sum of (i) the difference between the reception time of the SSB at the apparatus and the transmission time of the first message at the apparatus, and (ii) the difference between the transmission time of the SSB at the base station and the reception time of the first message at the base station.
3. The method of claim 1 , wherein the second message further includes:
information related to the difference between the transmission time of the SSB at the base station and the reception time of the first message at the base station.
4. The method of claim 1 , further comprising:
reporting the TA based on receiving information for configuring the TA to be reported.
5. The method of claim 1 , wherein the apparatus comprises a plurality of antenna elements,
the method further comprising:
based on receiving information for configuring a measurement related to one or more antenna elements among the plurality of antenna elements to be reported, reporting information relating to a difference between a reception time of a downlink (DL) reference signal (RS) related to the one or more antenna elements at the apparatus and the transmission time of the first message at the apparatus,
wherein the DL RS includes one or more of the SSB, a positioning reference signal (PRS), or a channel state information reference signal (CSI-RS).
6. The method of claim 1 , wherein the random access procedure further comprises:
transmitting a third message including a physical uplink shared channel (PUSCH) based on scheduling information included in the RAR,
wherein the TA is obtained based on a sum of:
(i) a difference between a reception time of the second message at the apparatus and a transmission time of the third message at the apparatus; and
(ii) a difference between a transmission time of the second message at the base station and a reception time of the third message at the base station.
7. A apparatus comprising:
at least one processor; and
at least one memory storing instructions that cause the at least one processor to perform operations comprising:
receiving a synchronization signal block (SSB) from a base station;
performing a random access procedure; and
obtaining information related to timing advance (TA),
wherein the random access procedure comprises:
transmitting a first message including a physical random access channel (PRACH) preamble based on the SSB; and
receiving a second message including information related to a random access response (RAR) after transmitting the first message,
wherein the TA is obtained based on a sum of:
(i) a difference between a reception time of the SSB at the apparatus and a transmission time of the first message at the apparatus; and
(ii) a difference between a transmission time of the SSB at the base station and a reception time of the first message at the base station,
wherein the second message further includes information related to a timing offset and information related to a timing offset,
wherein the timing offset is related to a downlink (DL) uplink (UL) switching time of the base station, and
wherein the TA is obtained based on:
the timing offset being applied to the sum of (i) the difference between the reception time of the SSB at the apparatus and the transmission time of the first message at the apparatus, and (ii) the difference between the transmission time of the SSB at the base station and the reception time of the first message at the base station.
8. The apparatus of claim 7 , wherein the one or more processors are configured to:
receive information for configuring the TA to be obtained based on the sum of (i) the difference between the reception time of the SSB at the apparatus and the transmission time of the first message at the apparatus, and (ii) the difference between the transmission time of the SSB at the base station and the reception time of the first message at the base station.
9. The apparatus of claim 7 , wherein the second message further includes:
information related to the difference between the transmission time of the SSB at the base station and the reception time of the first message at the base station.
10. The apparatus of claim 7 , wherein the apparatus is configured to communicate with one or more of a mobile terminal, a network, and an autonomous vehicle other than a vehicle containing the apparatus.
11. A method performed by an apparatus, the method comprising:
transmitting a synchronization signal block (SSB);
performing a random access procedure; and
obtaining information related to timing advance (TA),
wherein the random access procedure comprises:
transmitting the SSB and receiving a first message including a physical random access channel (PRACH) preamble from a terminal; and
transmitting a second message including information related to a random access response (RAR) to the terminal after receiving the first message,
wherein the TA is obtained based on a sum of:
(i) a difference between a reception time of the SSB at the terminal and a transmission time of the first message at the terminal; and
(ii) a difference between a transmission time of the SSB at the apparatus and a reception time of the first message at the apparatus,
wherein the second message further includes information related to a timing offset and information related to a timing offset,
wherein the timing offset is related to a downlink (DL) uplink (UL) switching time of the base station, and
wherein the TA is obtained based on:
the timing offset being applied to the sum of (i) the difference between the reception time of the SSB at the terminal and the transmission time of the first message at the terminal, and (ii) the difference between the transmission time of the SSB at the apparatus and the reception time of the first message at the apparatus.
12. A apparatus operating in a wireless communication system, comprising:
at least one processor;
a memory storing instructions that cause the at least one processor to perform operations comprising:
transmitting a synchronization signal block (SSB);
performing a random access procedure; and
obtaining information related to timing advance (TA),
wherein the random access procedure comprises:
transmitting the SSB and receiving a first message including a physical random access channel (PRACH) preamble from a terminal; and
transmitting a second message including information related to a random access response (RAR) to the terminal after receiving the first message,
wherein the TA is obtained based on a sum of:
(i) a difference between a reception time of the SSB at the terminal and a transmission time of the first message at the terminal; and
(ii) a difference between a transmission time of the SSB at the apparatus and a reception time of the first message at the apparatus,
wherein the second message further includes information related to a timing offset and information related to a timing offset,
wherein the timing offset is related to a downlink (DL) uplink (UL) switching time of the base station, and
wherein the TA is obtained based on:
the timing offset being applied to the sum of (i) the difference between the reception time of the SSB at the terminal and the transmission time of the first message at the terminal, and (ii) the difference between the transmission time of the SSB at the apparatus and the reception time of the first message at the apparatus.