Abstract
Systems and methods of providing DMRS for a UE are generally described. The DMRS locations in a resource unit of a Physical Resource Allocation of a shared channel are randomly determined, and the DMRS sequences randomly generated before transmission from a master UE to a wearable UE. The DMRS locations are disposed on different subcarriers and symbols in the resource unit and are repeated every k subframes or m resource units within the same subframe. In situations in which the collision/contention probability is relatively small, DMRS in control channels may be used rather than in the shared data channel.
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5G | 06/12/2020 | ISLD-202012-008 | APPLE INC |
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5G | 06/12/2020 | ISLD-202012-008 | APPLE INC |
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5G | 08/01/2024 | ISLD-202311-023 | APPLE INC |
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WO2017146779A1 | 5G | 06/12/2020 | ISLD-202012-008 | APPLE INC |
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WO2017146779A1 | 5G | 08/01/2024 | ISLD-202311-023 | APPLE INC |
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WO2017146779A1 | 5G | 28/12/2017 | ISLD-201712-046 | INTEL CORP |
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WO2017146779A1 | 5G | 28/12/2017 | ISLD-201712-060 | INTEL CORP |
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WO2017146779A1 | 5G | 28/12/2017 | ISLD-201712-060 | INTEL CORP |
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US2019052442A1 | 5G | 06/12/2020 | ISLD-202012-008 | APPLE INC |
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US2019052442A1 | 5G | 06/12/2020 | ISLD-202012-008 | APPLE INC |
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US2019052442A1 | 5G | 08/01/2024 | ISLD-202311-023 | APPLE INC |
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US2022077994A1 | 5G | 06/12/2020 | ISLD-202012-008 | APPLE INC |
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US2022077994A1 | 5G | 08/01/2024 | ISLD-202311-023 | APPLE INC |
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US11664952B2 | 5G | 06/12/2020 | ISLD-202012-008 | APPLE INC |
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US11664952B2 | 5G | 08/01/2024 | ISLD-202311-023 | APPLE INC |
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Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Product
Use Cases
Services
Claim
1. A user equipment device (UE), comprising:
memory; and
processing circuitry in communication with the memory and configured to cause the UE to:
randomize Demodulation Reference Signal (DMRS) locations of a DMRS in a resource unit (RU) of a Physical Resource Allocation (PRA) of a shared channel for transmission to an other UE, wherein the DMRS locations are determined based on a temporary ID of the UE;
generate DMRS sequences for transmission to the other UE in the DMRS locations; and
in response to transmission of the DMRS, decode information received from the other UE based on characteristics of received DMRS transmissions.
2. The UE of claim 1,
wherein the DMRS sequences are random sequences defined by one of a length-31 Gold sequence or a Zadoff-Chu sequence.
3. The UE of claim 2,
wherein each random sequence is mapped onto M-ary phase shift keying (MPSK) signal modulation.
4. The UE of claim 2,
wherein respective RUs of the PRA comprise respective pairs of DMRS having a transmission power higher than that of data signals in a first RU of another PRA in the shared channel.
5. The UE of claim 2,
wherein the processing circuitry is further configured to cause the UE to:
replicate the DMRS locations every predetermined number of subframes; and
configure the predetermined number of subframes by higher layer signaling or by broadcast as a configuration parameter.
6. The UE of claim 2,
wherein the processing circuitry is further configured to cause the UE to:
replicate the DMRS locations every predetermined number of RUs of the shared channel in a subframe; and
configure the predetermined number of RUs by higher layer signaling or by broadcast as a configuration parameter.
7. The UE of claim 6,
wherein the predetermined number is an integer greater than 1.
8. The UE of claim 2,
wherein the shared channel is a shared data channel and the processing circuitry is further configured to cause the UE to:
condition transmission of the DMRS based on at least one of a collision or contention probability, wherein the at least one of the collision or contention probability is based on at least one of a number of other UEs in a personal area network (PAN) associated with the UE or a density of neighboring PANs associated with other UEs; and
in response to a determination that the at least one of the collision or contention probability is less than a predetermined value, avoid use of the shared data channel for transmission of the DMRS.
9. The UE of claim 2,
wherein the other UE is a wearable UE, and wherein the processing circuitry is further configured to cause the UE to communicate data from the other UE to a base station.
10. The UE of claim 2,
wherein the processing circuitry is further configured to cause the UE to:
determine whether any other UE is associated with the UE to form a personal area network (PAN); and
in response to a determination that the UE is unassociated with the other UE, avoid transmission of the DMRS.
11. The UE of claim 2,
wherein the shared channel comprises at least one of a common control channel, a Transmitter resource Acquisition and Sounding (TAS) channel, a Receiver resource Acknowledgement and Sounding (RAS) channel, or an acknowledgment (ACK) channel.
12. The UE of claim 2,
wherein the DMRS locations are disposed on at least one of different subcarriers or symbols in the RU.
13. The UE of claim 2,
wherein the processing circuitry comprises a baseband processor; and
wherein the UE further comprises a transceiver configured to communicate with the other UE.
14. An apparatus, comprising:
memory; and
a processor in communication with the memory and configured to cause a user equipment device (UE) to:
detect a Demodulation Reference Signal (DMRS) received from an other UE, wherein the DMRS are random sequences and disposed at locations in a resource unit (RU) of a Physical Resource Allocation (PRA) of a shared channel, wherein the locations are determined based on a temporary ID of the other UE;
measure the DMRS; and
encode channel quality information based on the measured DMRS for transmission to the other UE.
15. The apparatus of claim 14,
wherein respective RUs of the PRA comprise respective pairs of DMRS having a transmission power higher than that of data signals in a first RU of another PRA in the shared channel.
16. The apparatus of claim 14,
wherein the locations are disposed on at least one of different subcarriers or symbols in the RU.
17. The apparatus of claim 14,
wherein the locations are repeated at a predetermined number of subframes; and
wherein the processor is further configured to cause the UE to detect the predetermined number of subframes from one of higher layer signaling or as a configuration parameter in a broadcast.
18. The apparatus of claim 14,
wherein the locations are repeated at a predetermined number of RUs of the shared channel in a subframe; and
wherein the processor is further configured to cause the UE to detect the predetermined number of RUs is from one of: higher layer signaling or as a configuration parameter in a broadcast.
19. The apparatus of claim 18,
wherein the predetermined number is an integer greater than 1.
20. The apparatus of claim 14,
wherein the apparatus is a wearable UE; and
wherein the processor is further configured to cause the UE to communicate data through the other UE to a base station.
21. A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of a user equipment (UE), the one or more processors to:
randomize-Demodulation Reference Signal (DMRS) locations of a DMRS in a resource unit (RU) of a Physical Resource Allocation (PRA) of a shared channel for transmission to an other UE, wherein the DMRS locations are determined based on a temporary ID of the UE;
generate DMRS sequences for transmission to the other UE in the DMRS locations; and
in response to transmission of the DMRS, decode information received from the other UE based on characteristics of received DMRS transmissions.
22. The non-transitory computer-readable storage medium of claim 21,
wherein the DMRS locations are disposed on at least one of different subcarriers or symbols in the RU.
23. The non-transitory computer-readable storage medium of claim 21,
wherein the DMRS sequences are random sequences defined by one of a length-31 Gold sequence or a Zadoff-Chu sequence.
24. The non-transitory computer-readable storage medium of claim 21,
wherein the instructions are further executable to configure the one or more processors to:
replicate the DMRS locations every predetermined number of subframes, and
configure the predetermined number of subframes by higher layer signaling or broadcast as a configuration parameter.
25. The non-transitory computer-readable storage medium of claim 21,
wherein the instructions are further executable to configure the one or more processors to:
replicate the DMRS locations every predetermined number of RUs of the shared channel in a subframe, wherein the predetermined number is an integer greater than 1, and
configure the predetermined number of RUs by higher layer signaling or broadcast as a configuration parameter.
26. The non-transitory computer-readable storage medium of claim 21,
wherein the instructions are further executable to configure the one or more processors to:
condition transmission of the DMRS based on at least one of a collision or contention probability, the at least one of a collision or contention probability based on at least one of a number of other UEs in a personal area network (PAN) associated with the UE or a density of neighboring PANs associated with other UEs; and
in response to a determination that the at least one of the collision or contention probability is less than a predetermined value, avoid use of the shared channel for transmission of the DMRS.
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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.