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:
receiving frequency hopping on/off information through a physical downlink control channel (PDCCH) carrying scheduling information for the PUSCH transmission; and
performing the PUSCH transmission on a resource block in the time domain transmission unit according to a predetermined hopping pattern if the frequency hopping on/off information indicates a frequency hopping on,
wherein the predetermined hopping pattern is defined by a subband hopping performed over subbands and a mirroring on/off, and
wherein the subband hopping is defined using a first integer obtained from a first random sequence, and the mirroring on/off is determined based on a second random sequence separate from the first random sequence.
2. The method of claim 1 , wherein the first integer is given using the first random sequence and using calculation operation which comprises:
performing modular calculation of: (a value generated based on the first random 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 subband hopping 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 reference index is determined based on the scheduling information.
5. 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.
6. A user equipment for performing physical uplink shared channel (PUSCH) transmission in a time domain transmission unit, the user equipment comprising:
a receiver,
a transmitter, and
a processor configured to control the receiver and the transmitter, the processor configured to:
control the receiver to receive frequency hopping on/off information through a physical downlink control channel (PDCCH) carrying scheduling information for the PUSCH transmission; and
control the transmitter to perform the PUSCH transmission on a resource block in the time domain transmission unit according to a predetermined hopping pattern if the frequency hopping on/off information indicates a frequency hopping on,
wherein the predetermined hopping pattern is defined by a subband hopping performed over subbands and a mirroring on/off, and
wherein the subband hopping is defined using a first integer obtained from a first random sequence, and the mirroring on/off is determined based on a second random sequence separate from the first random sequence.
7. The user equipment of claim 6 , wherein the first integer is given using the first random sequence and using calculation operation which comprises:
performing modular calculation of: (a value generated based on the first random 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 subband hopping 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 reference index is determined based on the scheduling information.
10. 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.
11. A method for receiving, by a base station, physical uplink shared channel (PUSCH) transmission in a time domain transmission unit, the method comprising:
transmitting frequency hopping on/off information through a physical downlink control channel (PDCCH) carrying scheduling information for the PUSCH transmission; and
receiving the PUSCH transmission on a resource block in the time domain transmission unit according to a predetermined hopping pattern if the frequency hopping on/off information indicates a frequency hopping on,
wherein the predetermined hopping pattern is defined by a subband hopping performed over subbands and a mirroring on/off, and
wherein the subband hopping is defined using a first integer obtained from a first random sequence, and the mirroring on/off is determined based on a second random sequence separate from the first random sequence.
12. The method of claim 11 , wherein the first integer is given using the first random sequence and using calculation operation which comprises:
performing modular calculation of: (a value generated based on the first random 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 subband hopping 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 reference index is determined based on the scheduling information.
15. 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.
16. A base station for receiving physical uplink shared channel (PUSCH) transmission in a time domain transmission unit, the base station comprising:
a transmitter,
a receiver, and
a processor configured to control the transmitter and the receiver, the processor configured to:
control the transmitter to transmit frequency hopping on/off information through a physical downlink control channel (PDCCH) carrying scheduling information for the PUSCH transmission; and
control the receiver to receive the PUSCH transmission on a resource block in the time domain transmission unit according to a predetermined hopping pattern if the frequency hopping on/off information indicates a frequency hopping on,
wherein the predetermined hopping pattern is defined by a subband hopping performed over subbands and a mirroring on/off, and
wherein the subband hopping is defined using a first integer obtained from a first random sequence, and the mirroring on/off is determined based on a second random sequence separate from the first random sequence.
17. The base station of claim 16 , wherein the first integer is given using the first random sequence and using calculation operation which comprises:
performing modular calculation of: (a value generated based on the first random 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 subband hopping 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 reference index is determined based on the scheduling information.
20. 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.