Abstract
Provided are a method and an apparatus for transmitting an uplink (UL) reference signal (RS) in a wireless communication system. A first user equipment (UE) served through a macro eNodeB (eNB) generates a first UL RS on the basis of a first indicator and transmits the generated first UL RS. A second UE served through a pico eNB having the same cell identifier (ID) as the macro eNB generates a second UL RS on the basis of a second indicator and transmits the generated second UL RS. The bandwidth to which the first UL RS is transmitted is overlapped with the bandwidth to which the second UL RS is transmitted.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 4G | 12/10/2014 | ISLD-201409-043 | LG | Yes | Basis Patent | ||||
| 5G | 15/10/2018 | ISLD-201810-029 | LG | Yes | Basis Patent | ||||
| 5G | 05/12/2019 | ISLD-201912-057 | QUALCOMM INC | Yes | Basis Patent | ||||
Specification Information
Specification Information
Technologies
Family Information
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|---|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | |||||||
| US2014211736A1 | 4G | 12/10/2014 | ISLD-201409-043 | LG | Yes | Basis Patent | ||||
| US2014211736A1 | 5G | 15/10/2018 | ISLD-201810-029 | LG | Yes | Basis Patent | ||||
| US2014211736A1 | 5G | 05/12/2019 | ISLD-201912-057 | QUALCOMM INC | Yes | Basis Patent | ||||
| CN103858368A | 4G | 12/10/2014 | ISLD-201409-043 | LG | No | Family Member | ||||
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| CN103858368A | 5G | 05/12/2019 | ISLD-201912-057 | QUALCOMM INC | No | Family Member | ||||
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| CN103858368B | 5G | 05/12/2019 | ISLD-201912-057 | QUALCOMM INC | No | Family Member | ||||
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| KR101572397B1 | 4G | 12/10/2014 | ISLD-201409-043 | LG | Yes | Family Member | ||||
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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| ----- | ----- | ----- | ----- | ----- |
S1
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Technologies
Resource configuration
Product
User Equipment (UE/Terminal)
Use Cases
Wireless communication
Services
Transmitting/receiving data in uplink
Claim
1. A method for transmitting, by a user equipment (UE), a reference signal in a wireless communication system, the method comprising:
configuring a virtual cell identity (ID) which is different from a physical cell ID;
generating a first pseudo-random sequence which is initialized by using the virtual cell ID;
obtaining a group hopping pattern by using the first pseudo-random sequence;
obtaining a sequence shift pattern by using the virtual cell ID;
obtaining a sequence group number of a base sequence by using the group hopping pattern and the sequence shift pattern;
generating the base sequence by using the sequence group number; and
transmitting a reference signal, which is generated by using the base sequence, to an eNodeB (eNB).
2. The method of claim 1, wherein the first pseudo-random sequence is initialized with
c
init
=
?
n
ID
RS
30
?
,
where the nID RS is the virtual cell ID.
3. The method of claim 1, further comprising:
obtaining a base sequence number of the base sequence by using the virtual cell ID,
wherein the base sequence is generated further by using the base sequence number.
4. The method of claim 3, wherein the obtaining the base sequence number comprises:
generating a second pseudo-random sequence which is initialized by using the virtual cell ID; and
obtaining the base sequence number by using the second pseudo-random sequence.
5. The method of claim 4, wherein the second pseudo-random sequence is initialized with
c
init
=
?
n
ID
RS
30
?
�
2
5
+
f
ss
PUSCH
,
where the nID RS is the virtual cell ID.
6. The method of claim 1, wherein the virtual cell ID is configured by a higher layer from the eNB.
7. The method of claim 1, wherein the reference signal is a demodulation reference signal for a physical uplink shared channel (PUSCH).
8. The method of claim 7, wherein the demodulation reference signal for the PUSCH is generated by using a cyclic shift hopping pattern for each slot.
9. The method of claim 8, wherein the cyclic shift hopping pattern for each slot is obtained by using the virtual cell ID.
10. The method of claim 9, wherein the obtaining the cyclic shift hopping pattern for each slot comprises:
generating a third pseudo-random sequence which is initialized by using the virtual cell ID; and
obtaining the cyclic shift hopping pattern for each slot by using the third pseudo-random sequence.
11. The method of claim 1, wherein the reference signal is a demodulation reference signal for a physical uplink control channel (PUCCH).
12. The method of claim 1, wherein the reference signal is a sounding reference signal (SRS).
13. The method of claim 1, wherein the eNB is either a macro eNB or a pico eNB.
14. A user equipment (UE) in a wireless communication system, the UE comprising:
a radio frequency (RF) unit for transmitting or receiving a radio signal; and
a processor coupled to the RF unit, and configured to:
configure a virtual cell identity (ID) which is different from a physical cell ID;
generate a first pseudo-random sequence which is initialized by using the virtual cell ID;
obtain a group hopping pattern by using the first pseudo-random sequence;
obtain a sequence shift pattern by using the virtual cell ID;
obtain a sequence group number of a base sequence by using the group hopping pattern and the sequence shift pattern;
generate the base sequence by using the sequence group number; and
transmit a reference signal, which is generated by using the base sequence, to an eNodeB (eNB).
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.