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US 8,897,219 B2Granted
Method and user equipment for transmitting ranging signal, and method and base station for receiving ranging signal
AssigneeLG Electronics Inc.
InventorsHyunwoo Lee, Hangyu Cho, Jinsam Kwak, Jinyoung Chun, Jinsoo Choi
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Abstract
A method and apparatus for transmitting a ranging signal, and a method and apparatus for receiving the ranging signal are disclosed. A ranging channel (RCH) for transmission of a ranging signal is allocated to the reuse-1 partition. However, the ranging channel (RCH) is allocated to the power-boosted reuse-3 partition only when there is no reuse-1 partition.
Claims8
A method for transmitting a ranging signal by a user equipment (UE) in a wireless communication system, the method comprising:
- receiving frequency partition configuration information from a base station (BS);
- determining a ranging channel (RCH) in a reuse-1 frequency partition, or in a power-boosted reuse-3 frequency partition only when there is no reuse-1 frequency partition, based on cell ID information (IDcell) of the BS and the frequency partition configuration information;
- and
- transmitting the ranging signal to the BS using the RCH,
- wherein the RCH is a non-synchronized ranging channel (NS-RCH) when the UE is not synchronized to the BS, and a frequency resource for the NS-RCH is determined according to Equation 1:
- ISB=mod(IDcell,RSB) [Equation 1]
- where ISB is a subband index (0, . . . , (RSB−1)) for the NS-RCH from among RSB subbands, and RSB is determined by Equation 2:
- R
- SB
- =
- L
- SB
-
- -
-
- CRU
- ,
- FP
- i
- 4
- [
- Equation
-
-
- 2
- ]
- where LSB-CRU,FPi is a number of subband contiguous resource units (CRUs) allocated to a frequency partition FPi, and FPi is corresponding to the reuse-1 frequency partition or corresponding to the power-boosted reuse-3 frequency partition only when there is no reuse-1 frequency partition.
24 more elements
A method for receiving a ranging signal by a base station (BS) in a wireless communication system, the method comprising:
- transmitting frequency partition configuration information;
- and
- receiving the ranging signal from a user equipment (UE) using a ranging channel (RCH) in a reuse-1 frequency partition, or in a power-boosted reuse-3 frequency partition only when there is no reuse-1 frequency partition, based on cell ID information (IDcell) of the BS and the frequency partition configuration information,
- wherein the RCH is a non-synchronized ranging channel (NS-RCH) when the UE is not synchronized to the BS, and a frequency resource for the NS-RCH is determined according to Equation 1:
- ISB=mod(IDcell,RSB) [Equation 1]
- where ISB is a subband index (0, . . . , (RSB−1)) for the NS-RCH from among RSB subbands, and RSB is determined by Equation 2:
- R
- SB
- =
- L
- SB
-
- -
-
- CRU
- ,
- FP
- i
- 4
- [
- Equation
-
-
- 4
- ]
- where LSB-CRU,FPi is a number of subband contiguous resource units (CRUs) allocated to a frequency partition FPi, and FPi is corresponding to the reuse-1 frequency partition or corresponding to the power-boosted reuse-3 frequency partition only when there is no reuse-1 frequency partition.
23 more elements
A user equipment (UE) for transmitting a ranging signal in a wireless communication system comprising:
- a receiver;
- a transmitter;
- and
- a processor configured to control the receiver and the transmitter,
- wherein the receiver is configured to receive frequency partition configuration information from a base station (BS), and
- the processor determines a ranging channel (RCH) in a reuse-1 frequency partition, or in a power-boosted reuse-3 frequency partition only when there is no reuse-1 frequency partition, based on cell ID information (IDcell) of the BS and the frequency partition configuration information, and transmits the ranging signal to the BS using the RCH,
- wherein the RCH is a non-synchronized ranging channel (NS-RCH) when the UE is not synchronized to the BS, and the processor is configured to determine a frequency resource for the NS-RCH according to Equation 1:
- ISB=mod(IDcell,RSB) [Equation 1]
- where ISB is a subband index (0, . . . , (RSB−1)) for the NS-RCH from among RSB subbands, and the processor is configured to determine RSB according to Equation 2:
- R
- SB
- =
- L
- SB
-
- -
-
- CRU
- ,
- FP
- i
- 4
- [
- Equation
-
-
- 2
- ]
- where LSB-CRU,FPi is a number of subband contiguous resource units (CRUs) allocated to a frequency partition FPi, and FPi is corresponding to the reuse-1 frequency partition or corresponding to the power-boosted reuse-3 frequency partition only when there is no reuse-1 frequency partition.
26 more elements
A base station (BS) for receiving a ranging signal in a wireless communication system comprising:
- a transmitter;
- a receiver;
- and
- a processor which controls the transmitter to transmit frequency partition configuration information, and controls the receiver to receive the ranging signal from a user equipment (UE) using a ranging channel (RCH) in a reuse-1 frequency partition, or in a power-boosted reuse-3 frequency partition only when there is no reuse-1 frequency partition, based on cell ID information (IDcell) of the BS and the frequency partition configuration information,
- wherein the RCH is a non-synchronized ranging channel (NS-RCH) when the UE is not synchronized to the BS, and the processor is configured to determine a frequency resource for the NS-RCH according to Equation 1:
- ISB=mod(IDcell,RSB) [Equation 1]
- where ISB is a subband index (0, . . . , (RSB−1)) for the NS-RCH from among RSB subbands, and the processor is configured to determine RSB according to Equation 2:
- R
- SB
- =
- L
- SB
-
- -
-
- CRU
- ,
- FP
- i
- 4
- [
- Equation
-
-
- 4
- ]
- where LSB-CRU,FPi is a number of subband contiguous resource units (CRUs) allocated to a frequency partition FPi, and FPi is corresponding to the reuse-1 frequency partition or corresponding to the power-boosted reuse-3 frequency partition only when there is no reuse-1 frequency partition.
24 more elements
Dependencies are inferred from the claim text.