Method and device for deciding location of terminal in a wireless communication system
AssigneeLG Electronics Inc.
InventorsSeunghee Han, Jaehoon Chung
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Abstract
The present invention relates to a method for deciding a location of a terminal in a wireless communication system, and provides the method for deciding the location comprising the following steps: receiving reference signals from a plurality of base stations; and transmitting reference signal time difference (RSTD) which is received from the plurality of base stations, wherein the reference signal is mapped according to a predetermined pattern inside a subframe.
Claims7
A method for determining a location of a user equipment in a wireless communication system, the method comprising:
- receiving reference signals from a plurality of base stations;
- and
- transmitting a reference signal time difference (RSTD) between the received reference signals received from the plurality of base stations,
- wherein the reference signals are mapped within a subframe according to a predetermined pattern,
- wherein the subframe includes at least one basic unit of which size corresponds to 12 subcarriers×14 OFDM symbols,
- wherein the reference signals are mapped into at least one resource element within the basic unit where an resource element is a time-frequency resource defined by one subcarrier and one OFDM symbol, and
- wherein the predetermined pattern is configured as illustrated in the following Pattern Table 1, where “P” represents a resource element into which the reference signals are mapped, “SC” is a subcarrier index, and “S” is an OFDM symbol index:
- Pattern Table 1
- S = 0
- S = 1
- S = 2
- S = 3
- S = 4
- S = 5
- S = 6
- S = 7
- S = 8
- S = 9
- S = 10
- S = 11
- S = 12
- S = 13
- SC = 11
- P
- SC = 10
- P
- SC = 9
- P
- P
- SC = 8
- P
- SC = 7
- P
- SC = 6
- P
- P
- SC = 5
- P
- SC = 4
- P
- SC = 3
- P
- P
- SC = 2
- P
- SC = 1
- P
- SC = 0
- P
- P.
A user equipment in a wireless communication system, the user equipment comprising:
- a receiver configured to receive reference signals from a plurality of base stations;
- and
- a controller configured to calculate a reference signal time difference (RSTD) between the received reference signals received from the plurality of base stations,
- wherein the reference signals are mapped within a subframe according to a predetermined pattern,
- wherein the subframe includes at least one basic unit of which size corresponds to 12 subcarriers×14 OFDM symbols,
- wherein the reference signals are mapped into at least one resource element within the basic unit where an resource element is a time-frequency resource defined by one subcarrier and one OFDM symbol, and
- wherein the predetermined pattern is configured as illustrated in the following Pattern Table 1, where “P” represents a resource element into which the reference signals are mapped, “SC” is a subcarrier index, and “S” is an OFDM symbol index:
- Pattern Table 1
- S = 0
- S = 1
- S = 2
- S = 3
- S = 4
- S = 5
- S = 6
- S = 7
- S = 8
- S = 9
- S = 10
- S = 11
- S = 12
- S = 13
- SC = 11
- P
- SC = 10
- P
- SC = 9
- P
- P
- SC = 8
- P
- SC = 7
- P
- SC = 6
- P
- P
- SC = 5
- P
- SC = 4
- P
- SC = 3
- P
- P
- SC = 2
- P
- SC = 1
- P
- SC = 0
- P
- P.
Dependencies are inferred from the claim text.