Method and apparatus for transmitting and receiving signal including cell information in communication system
Disclosed are a method and an apparatus for transmitting and receiving a signal including cell information in a communication system. An operation method of a terminal comprises the steps of: receiving a first SS/PBCH block from a base station; receiving a second SS/PBCH block from the base station after receiving the first SS/PBCH block; and confirming information included in the first SS/PBCH block and the second SS/PBCH block by performing a combining operation on the first SS/PBCH block and the second SS/PBCH block when a transmission beam of the first SS/PBCH block is the same as a transmission beam of the second SS/PBCH block. Therefore, the performance of a communication system can be improved.
1. An operation method of a terminal in a communication system, the operation method comprising:
receiving a first synchronization signal/physical broadcast channel (SS/PBCH) block from a base station;
receiving a second SS/PBCH block from the base station;
calculating a first value using an index of a first PBCH demodulation reference signal (DMRS) sequence of the first SS/PBCH block and a specific value configured by the base station, wherein the specific value is used for determining a quasi-co-located (QCL) relationship;
calculating a second value using an index of a second PBCH DMRS sequence of the second SS/PBCH block and the specific value; and
determining that the first SS/PBCH block is quasi co-located with the second SS/PBCH block when the first value is equal to the second value.
2. The operation method according to claim 1 , wherein the first SS/PBCH block and the second SS/PBCH block are received in a same transmission window.
3. The operation method according to claim 2 , further comprising receiving a radio resource control (RRC) message including information on duration of the same transmission window and the specific value.
4. The operation method according to claim 1 , further comprising identifying information included in the first SS/PBCH block and the second SS/PBCH block by performing a combining operation on the first SS/PBCH block and the second SS/PBCH block.
5. The operation method according to claim 1 , wherein the specific value is a number of SS/PBCH blocks transmitted from the base station or a number of beams used for transmission of the SS/PBCH blocks.
6. The operation method according to claim 1 , wherein the first value is a value of “the index of the first PBCH DMRS sequence modulo the specific value,” and the second value is a value of “the index of the second PBCH DMRS sequence modulo the specific value.”
7. The operation method according to claim 1 , wherein an index of the first SS/PBCH block is determined based on the index of the first PBCH DMRS sequence or a combination of the value of the first PBCH DMRS sequence and a value indicated by a PBCH payload included in the first SS/PBCH block, and an index of the second SS/PBCH block is determined based on the index of the second PBCH DMRS sequence or a combination of the index of the second PBCH DMRS sequence and a value indicated by a PBCH payload included in the second SS/PBCH block.
8. An operation method of a base station in a communication system, the operation method comprising:
transmitting a radio resource control (RRC) message including information on duration of a transmission window and a specific value used for determining a quasi-co-located (QCL) relationship;
transmitting a first synchronization signal/physical broadcast channel (SS/PBCH) block in the duration of the transmission window; and
transmitting a second SS/PBCH block in the duration of the transmission window,
wherein the first SS/PBCH block is quasi co-located with the second SS/PBCH block when a first value which is calculated using an index of a first PBCH demodulation reference signal (DMRS) sequence of the first SS/PBCH block and the specific value is equal to a second value which is calculated using an index of a second PBCH DMRS sequence of the second SS/PBCH block and the specific value.
9. The operation method according to claim 8 , wherein the first value is a value of “the index of the first PBCH DMRS sequence modulo the specific value,” and the second value is a value of “the index of the second PBCH DMRS sequence modulo the specific value.”
10. The operation method according to claim 8 , wherein, when the first SS/PBCH block is quasi co-located with the second SS/PBCH block, a transmission beam of the first SS/PBCH block is equal to a transmission beam of the second SS/PBCH block.
11. The operation method according to claim 8 , wherein, when transmission of the first SS/PBCH block is delayed, the first SS/PBCH block includes information indicating an offset between an original transmission position and an actual transmission position of the first SS/PBCH block.
12. The operation method according to claim 8 , wherein the specific value is a number of SS/PBCH blocks transmitted from the base station or a number of beams used for transmission of the SS/PBCH blocks.
13. A terminal in a communication system, the terminal comprising a processor and a memory storing at least one instruction executable by the processor, wherein when executed by the processor, the at least one instruction is configured to cause the processor to:
receive a first synchronization signal/physical broadcast channel (SS/PBCH) block from a base station;
receive a second SS/PBCH block from the base station;
calculate a first value using an index of a first PBCH demodulation reference signal (DMRS) sequence of the first SS/PBCH block and a specific value configured by the base station, wherein the specific value is used for determining a quasi-co-located (QCL) relationship;
calculate a second value using an index of a second PBCH DMRS sequence of the second SS/PBCH block and the specific value; and
determine that the first SS/PBCH block is quasi co-located with the second SS/PBCH block when the first value is equal to the second value.
14. The terminal according to claim 13 , wherein the first SS/PBCH block and the second SS/PBCH block are received in a same transmission window.
15. The terminal according to claim 14 , wherein the at least one instruction is further configured to cause the processor to receive a radio resource control (RRC) message including information on duration of the same transmission window and the specific value.
16. The terminal according to claim 13 , wherein the at least one instruction is further configured to cause the processor to identify information included in the first SS/PBCH block and the second SS/PBCH block by performing a combining operation on the first SS/PBCH block and the second SS/PBCH block.
17. The terminal according to claim 13 , wherein the specific value is a number of SS/PBCH blocks transmitted from the base station or a number of beams used for transmission of the SS/PBCH blocks.
18. The terminal according to claim 13 , wherein the first value is a value of “the index of the first PBCH DMRS sequence modulo the specific value,” and the second value is a value of “the index of the second PBCH DMRS sequence modulo the specific value.”
19. The terminal according to claim 13 , wherein an index of the first SS/PBCH block is determined based on the index of the first PBCH DMRS sequence or a combination of the first value of the first PBCH DMRS sequence and a value indicated by a PBCH payload included in the first SS/PBCH block, and an index of the second SS/PBCH block is determined based on the index of the second PBCH DMRS sequence or a combination of the index of the second PBCH DMRS sequence and a value indicated by a PBCH payload included in the second SS/PBCH block.