System and method for determining a pilot signal
A method of configuring a pilot signal includes defining a first pilot signal arrangement and defining a second pilot signal arrangement. Also, the method includes determining, by a communications controller, a first determined pilot signal arrangement in accordance with the first defined pilot signal arrangement, the second defined pilot signal arrangement, and a set of characteristics and transmitting, by the communications controller, the pilot signal having the first determined pilot signal arrangement.
1. A method comprising:
transmitting, by a base station, a pilot configuration indicating a pilot signal arrangement, the pilot signal arrangement having been selected from a set of pre-defined pilot signal arrangements according to at least one of a transmission time interval (TTI) length, a mobility of a user equipment (UE), or a modulation and coding scheme (MCS) level over which the UE transmits or receives wireless signals,
the pilot signal arrangement having a time domain pilot density defined by a number of pilot symbols of the pilot signal arrangement used within the TTI length, and the time domain pilot density depending on the MCS level; and
communicating, by the base station with the UE, using a pilot signal according to the pilot signal arrangement,
wherein the time domain pilot density of the pilot signal arrangement is a function of the TTI length.
2. The method of claim 1 , wherein the set of pre-defined pilot signal arrangements includes a frequency domain pilot signal arrangement.
3. The method of claim 2 , wherein the frequency domain pilot signal arrangement is associated with a channel delay spread characteristic.
4. The method of claim 1 , wherein the time domain pilot density of the pilot signal arrangement is associated with a symbol duration of a transmission communicated over time-frequency resources allocated to the UE.
5. The method of claim 1 , wherein the time domain pilot density of the pilot signal arrangement is associated with a channel estimation capability of the UE.
6. A method comprising:
receiving, by a user equipment (UE) from a base station, a pilot configuration indicating a pilot signal arrangement, the pilot signal arrangement having been selected from a set of pre-defined pilot signal arrangements according to at least one of a transmission time interval (TTI) length, a mobility of the UE, or a modulation and coding scheme (MCS) level over which the UE transmits or receives wireless signals,
the pilot signal arrangement having a time domain pilot density defined by a number of pilot symbols of the pilot signal arrangement used within the TTI length, and the time domain pilot density depending on the MCS level; and
communicating, by the UE with the base station, using a pilot signal according to the pilot signal arrangement,
wherein the time domain pilot density of the pilot signal arrangement is a function of the TTI length.
7. The method of claim 6 , wherein the set of pre-defined pilot signal arrangements includes a frequency domain pilot signal arrangement.
8. The method of claim 7 , wherein the frequency domain pilot signal arrangement is associated with a channel delay spread characteristic.
9. The method of claim 6 , wherein the time domain pilot density of the pilot signal arrangement is associated with a symbol duration of a transmission communicated over time-frequency resources allocated to the UE.
10. The method of claim 6 , wherein the time domain pilot density of the pilot signal arrangement is associated with a channel estimation capability of the UE.
11. A base station comprising:
a processor; and
a non-transitory computer readable storage medium storing programming for execution by the processor, the programming including instructions to:
transmit a pilot configuration indicating a pilot signal arrangement, the pilot signal arrangement having been selected from a set of pre-defined pilot signal arrangements according to at least one of a transmission time interval (TTI) length, a mobility of a user equipment (UE), or a modulation and coding scheme (MCS) level over which the UE transmits or receives wireless signals,
the pilot signal arrangement having a time domain pilot density defined by a number of pilot symbols of the pilot signal arrangement used within the TTI length, and the time domain pilot density depending on the MCS level; and
communicate, with the UE, using a pilot signal according to the pilot signal arrangement,
wherein the time domain pilot density of the pilot signal arrangement is a function of the TTI length.
12. The base station of claim 11 , wherein the set of pre-defined pilot signal arrangements includes a frequency domain pilot signal arrangement.
13. The base station of claim 12 , wherein the frequency domain pilot signal arrangement is associated with a channel delay spread characteristic.
14. The base station of claim 11 , wherein the time domain pilot density of the pilot signal arrangement is associated with a symbol duration of a transmission communicated over time-frequency resources allocated to the UE.
15. The base station of claim 11 , wherein the time domain pilot density of the pilot signal arrangement is associated with a channel estimation capability of the UE.
16. A User Equipment (UE) comprising:
a processor; and
a non-transitory computer readable storage medium storing programming for execution by the processor, the programming including instructions to:
receive, from a base station, a pilot configuration indicating a pilot signal arrangement, the pilot signal arrangement having been selected from a set of pre-defined pilot signal arrangements according to at least one of a transmission time interval (TTI) length, a mobility of the UE, or a modulation and coding scheme (MCS) level over which the UE transmits or receives wireless signals,
the pilot signal arrangement having a time domain pilot density defined by a number of pilot symbols of the pilot signal arrangement used within the TTI length, and the time domain pilot density depending on the MCS level; and
communicate, with the base station, using a pilot signal according to the pilot signal arrangement,
wherein the time domain pilot density of the pilot signal arrangement is a function of the TTI length.
17. The UE of claim 16 , wherein the set of pre-defined pilot signal arrangements includes a frequency domain pilot signal arrangement.
18. The UE of claim 17 , wherein the frequency domain pilot signal arrangement is associated with a channel delay spread characteristic.
19. The UE of claim 16 , wherein the time domain pilot density of the pilot signal arrangement is associated with a symbol duration of a transmission communicated over time-frequency resources allocated to the UE.
20. The UE of claim 16 , wherein the time domain pilot density of the pilot signal arrangement is associated with a channel estimation capability of the UE.