Method of generating reference signal in wireless communication system
View Patent ↗A method of generating a reference signal includes acquiring a base sequence and acquiring a reference signal sequence with a length N from the base sequence. Good PAPR/CM characteristics of the reference signal can be kept to enhance performance of data demodulation or uplink scheduling.
1. A method for transmitting a reference signal, by a user equipment, in a wireless communication system, the method comprising:
transmitting the reference signal, the reference signal being generated based on a cyclic shift and a base sequence x u (n),
wherein the base sequence x u (n) is expressed by
x u ( n )= e jp(n)π/4 , and
wherein a length of the base sequence x u (n) is one of 12 or 24,
wherein, if the length of the base sequence x u (n) is 12, at least one of the sets of values provided in the below table is used as a set of values for the phase parameter p(n):
p(0), . . . , p(11)
−1 3 −1 1 1 −3 −3 −1 −3 −3 3 −1
−1 3 1 3 1 −1 −1 3 −3 −1 −3 −1
−1 −3 1 1 1 1 3 1 −1 1 −3 −1
−1 3 −3 3 −1 3 3 −3 3 3 −1 −1,
and
wherein, if the length of the base sequence x u (n) is 24, at least one of the sets of values provided in the below table is used as the set of values for the phase parameter p(n):
p(0), . . . , p(23)
−1 −3 3 −1 −1 −1 −1 1 1 −3 3 1 3 3 1 −1 1 −3 1 −3 1 1 −3 −1
−1 −3 3 −3 −3 −3 −1 −1 −3 −1 −3 3 1 3 −3 −1 3 −1 1 −1 3 −3 1 −1
−1 −1 1 −3 1 3 −3 1 −1 −3 −1 3 1 3 1 −1 −3 −3 −1 −1 −3 −3 −3 −1
−1 −3 1 1 3 −3 1 1 −3 −1 −1 1 3 1 3 1 −1 3 1 1 −3 −1 −3 −1
−1 −3 −1 −1 1 −3 −1 −1 1 −1 −3 1 1 −3 1 −3 −3 3 1 1 −1 3 −1 −1.
2. The method of claim 1 , wherein the reference signal is a reference signal for a physical uplink control channel (PUCCH).
3. The method of claim 1 , wherein the reference signal is a reference signal for a physical uplink shared channel (PUSCH).
4. The method of claim 1 , wherein the reference signal is a sounding reference signal (SRS).
5. The method of claim 1 , further comprising mapping the reference signal to corresponding resource elements.
6. A user equipment configured to transmit a reference signal in a wireless communication system, the user equipment comprising:
an antenna;
a communications module operatively connected to the antenna; and
a processor connected to the communications module, and configured to: transmit the reference signal, the reference signal being generated based on a cyclic shift and a base sequence x u (n),
wherein the base sequence x u (n) is expressed by
x u ( n )= e jp(n)π/4 , and
wherein a length of the base sequence x u (n) is one of 12 or 24,
wherein, if the length of the base sequence x u (n) is 12, at least one of the sets of values provided in the below table is used as a set of values for the phase parameter p(n):
p(0), . . . , p(11)
−1 3 −1 1 1 −3 −3 −1 −3 −3 3 −1
−1 3 1 3 1 −1 −1 3 −3 −1 −3 −1
−1 −3 1 1 1 1 3 1 −1 1 −3 −1
−1 3 −3 3 −1 3 3 −3 3 3 −1 −1,
and
wherein, if the length of the base sequence x u (n) is 24, at least one of the sets of values provided in the below table is used as the set of values for the phase parameter p(n):
p(0), . . . , p(23)
−1 −3 3 −1 −1 −1 −1 1 1 −3 3 1 3 3 1 −1 1 −3 1 −3 1 1 −3 −1
−1 −3 3 −3 −3 −3 −1 −1 −3 −1 −3 3 1 3 −3 −1 3 −1 1 −1 3 −3 1 −1
−1 −1 1 −3 1 3 −3 1 −1 −3 −1 3 1 3 1 −1 −3 −3 −1 −1 −3 −3 −3 −1
−1 −3 1 1 3 −3 1 1 −3 −1 −1 1 3 1 3 1 −1 3 1 1 −3 −1 −3 −1
−1 −3 −1 −1 1 −3 −1 −1 1 −1 −3 1 1 −3 1 −3 −3 3 1 1 −1 3 −1 −1.
7. The user equipment of claim 6 , wherein the reference signal is a reference signal for a physical uplink control channel (PUCCH).
8. The user equipment of claim 6 , wherein the reference signal is a reference signal for a physical uplink shared channel (PUSCH).
9. The user equipment of claim 6 , wherein the reference signal is a sounding reference signal (SRS).
10. The user equipment of claim 6 , wherein the processor is further configured to map the reference signal to corresponding resource elements.