Frequency hopping pattern and method for transmitting uplink signals using the same
A method for performing uplink transmission in a time domain transmission unit includes receiving, from a base station, hopping-mode information indicating whether a frequency hopping is an inter-slot hopping or an inter-subframe hopping and performing the uplink transmission using a resource block in the time domain transmission unit.
1. A method for performing, by a user equipment, physical uplink shared channel (PUSCH) transmission in a time domain transmission unit, the method comprising:
performing the PUSCH transmission on a resource block in the time domain transmission unit according to a predetermined hopping pattern of a frequency hopping,
wherein the predetermined hopping pattern is defined by a combination of a first hopping pattern using a subband hopping which is performed over subbands and a second hopping pattern using a mirroring according to which resource blocks within one subband are arranged reversely based on a center of the one subband, and
wherein the first hopping pattern is defined by using a first integer obtained from a first random sequence and the second hopping pattern is defined by using a second integer obtained from a second random sequence separate from the first random sequence.
2. The method of claim 1 , wherein the first integer is given using a m-sequence and using calculation operation which comprises:
performing modular calculation of: (a value generated based on the m-sequence) mod (N sb −1), where “N sb ” is a number of subbands for the subband hopping; and
adding 1 to the modular calculated value.
3. The method of claim 1 , wherein the first hopping pattern is defined such that a resource block index RB of the resource block used for the PUSCH transmission is given based on
RB=(a reference index+(the first integer)*N sb RB )) mod (N sb RB *N sb ), where “N sb ” is a number of subbands for the subband hopping and “N sb RB ” is a number of resource block in each subband.
4. The method of claim 3 , wherein the predetermined hopping pattern is defined within “N sb RB *N sb ” resource blocks, and the “N sb RB *N sb ” resource blocks is within a uplink system band configured with N UL RB resource blocks excluding a predetermined number of resource blocks from each end of the uplink system band.
5. The method of claim 1 , wherein the second hopping pattern is defined such that a value of 0 and a value of 1 are respectively mapped to a mirroring-off and a mirroring-on according to the second random sequence.
6. A user equipment for performing physical uplink shared channel (PUSCH) transmission in a time domain transmission unit, the user equipment comprising:
an antenna; and
a transmitter operatively coupled to the antenna and configured to perform the PUSCH transmission on a resource block in the time domain transmission unit according to a predetermined hopping pattern of a frequency hopping,
wherein the predetermined hopping pattern is defined by a combination of a first hopping pattern using a subband hopping which is performed over subbands and a second hopping pattern using a mirroring according to which resource blocks within one subband are arranged reversely based on a center of the one subband, and
wherein the first hopping pattern is defined by using a first integer obtained from a first random sequence and the second hopping pattern is defined by using a second integer obtained from a second random sequence separate from the first random sequence.
7. The user equipment of claim 6 , wherein the first integer is given using a m-sequence and using calculation operation which comprises:
performing modular calculation of: (a value generated based on the m-sequence) mod (N sb −1), where “N sb ” is a number of subbands for the subband hopping; and
adding 1 to the modular calculated value.
8. The user equipment of claim 6 , wherein the first hopping pattern is defined such that a resource block index RB of the resource block used for the PUSCH transmission is given based on
RB=(a reference index+(the first integer)*N sb RB )) mod (N sb RB *N sb ), where “N sb ” is a number of subbands for the subband hopping and “N sb RB ” is a number of resource block in each subband.
9. The user equipment of claim 8 , wherein the predetermined hopping pattern is defined within “N sb RB *N sb ” resource blocks, and the “N sb RB *N sb ” resource blocks is within a uplink system band configured with N UL RB resource blocks excluding a predetermined number of resource blocks from each end of the uplink system band.
10. The user equipment of claim 6 , wherein the second hopping pattern is defined such that a value of 0 and a value of 1 are respectively mapped to a mirroring-off and a mirroring-on according to the second random sequence.
11. A method for receiving, by a base station, physical uplink shared channel (PUSCH) transmission in a time domain transmission unit, the method comprising:
receiving the PUSCH transmission on a resource block in the time domain transmission unit according to a predetermined hopping pattern of a frequency hopping,
wherein the predetermined hopping pattern is defined by a combination of a first hopping pattern using a subband hopping which is performed over subbands and a second hopping pattern using a mirroring according to which resource blocks within one subband are arranged reversely based on a center of the one subband, and
wherein the first hopping pattern is defined by using a first integer obtained from a first random sequence and the second hopping pattern is defined by using a second integer obtained from a second random sequence separate from the first random sequence.
12. The method of claim 11 , wherein the first integer is given using a m-sequence and using calculation operation which comprises:
performing modular calculation of: (a value generated based on the m-sequence) mod (N sb −1), where “N sb ” is a number of subbands for the subband hopping; and
adding 1 to the modular calculated value.
13. The method of claim 11 , wherein the first hopping pattern is defined such that a resource block index RB of the resource block used for the PUSCH transmission is given based on
RB=(a reference index+(the first integer)*N sb RB )) mod (N sb RB *N sb ), where “N sb ” is a number of subbands for the subband hopping and “N sb RB ” is a number of resource block in each subband.
14. The method of claim 13 , wherein the predetermined hopping pattern is defined within “N sb RB *N sb ” resource blocks, and the “N sb RB *N sb ” resource blocks is within a uplink system band configured with N UL RB resource blocks excluding a predetermined number of resource blocks from each end of the uplink system band.
15. The method of claim 11 , wherein the second hopping pattern is defined such that a value of 0 and a value of 1 are respectively mapped to a mirroring-off and a mirroring-on according to the second random sequence.
16. A base station for receiving physical uplink shared channel (PUSCH) transmission in a time domain transmission unit, the base station comprising:
an antenna; and
a receiver operatively coupled to the antenna and configured to receive the PUSCH transmission on a resource block in the time domain transmission unit according to a predetermined hopping pattern of a frequency hopping,
wherein the predetermined hopping pattern is defined by a combination of a first hopping pattern using a subband hopping which is performed over subbands and a second hopping pattern using a mirroring according to which resource blocks within one subband are arranged reversely based on a center of the one subband, and
wherein the first hopping pattern is defined by using a first integer obtained from a first random sequence and the second hopping pattern is defined by using a second integer obtained from a second random sequence separate from the first random sequence.
17. The base station of claim 16 , wherein the first integer is given using a m-sequence and using calculation operation which comprises:
performing modular calculation of: (a value generated based on the m-sequence) mod (N sb −1), where “N sb ” is a number of subbands for the subband hopping; and
adding 1 to the modular calculated value.
18. The base station of claim 16 , wherein the first hopping pattern is defined such that a resource block index RB of the resource block used for the PUSCH transmission is given based on
RB=(a reference index+(the first integer)*N sb RB )) mod (N sb RB *N sb ), where “N sb ” is a number of subbands for the subband hopping and “N sb RB ” is a number of resource block in each subband.
19. The base station of claim 18 , wherein the predetermined hopping pattern is defined within “N sb RB *N sb ” resource blocks, and the “N sb RB *N sb ” resource blocks is within a uplink system band configured with N UL RB resource blocks excluding a predetermined number of resource blocks from each end of the uplink system band.
20. The base station of claim 16 , wherein the second hopping pattern is defined such that a value of 0 and a value of 1 are respectively mapped to a mirroring-off and a mirroring-on according to the second random sequence.