Abstract
Systems, procedures, and instrumentalities are disclosed for synchronization in beamformed systems such as new Radio (NR). A common SYNC channel may be provided for single and multi-beam systems. A SYNC burst structure may be provided for beam-based systems. Procedures enabling or supporting single and multi-beam deployment may provide, for example, a common SYNC for TDD and FDD, a common SYNC for mixed numerologies, SYNC for larger bandwidth and SYNC transmission and reception for single and multiple TRPs.
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WO2018064271A1 | 5G | 21/06/2019 | ISLD-201906-026 | INTERDIGITAL INC |
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KR20190053172A | 5G | 21/06/2019 | ISLD-201906-026 | INTERDIGITAL INC |
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TW201818674A | 5G | 21/06/2019 | ISLD-201906-026 | INTERDIGITAL INC |
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Claim
A wireless transmit/receive unit (WTRU) for synchronizing with a beamforming cellular communications network, comprising:
a processor configured to:
receive, at the WTRU, within a beam, a SYNC burst set, comprising a plurality of SYNC bursts that each comprise multiple symbols, from the beamforming cellular communications network; and
determine, from the SYNC burst set, the synchronization parameters for the WTRU to synchronize with the beamforming cellular communications network.
2. The WTRU of claim 1, wherein the processor is configured to receive the SYNC burst set using one of a multi-beam sync signal oriented by the beamforming cellular communications network, a multi-beam sync schedule oriented by the WTRU, a multi-beam short SYNC signal, and a hybrid SYNC structure oriented based on the beamforming cellular communications network and the WTRU.
3. The WTRU of claim 1, wherein the synchronization parameters comprise one or more of a SYNC signal type, a beam sweep type, a beam sweep order, an ACK resource configuration, and a beam hopping pattern.
4. The WTRU of claim 1, wherein the processor is configured to perform a beam sweep in order to receive the SYNC burst set.
5. The WTRU of claim 4, wherein the beam sweep comprises a partial beam sweep and the processor is configured to determine to conduct the partial beam sweep on certain beams sent by the beamforming cellular communications network.
6. The WTRU of claim 1, wherein the processor is further configured to perform a first beam sweep, determine a first beam pairing between the WTRU and the beamforming cellular communications network, and perform a second beam sweep with the first beam pairing.
7. The WTRU of claim 1, wherein the processor is further configured to determine whether a SYNC operation mode is single beam or multi-beam by using one of PSS and SSS timing and/or frequency differences, PSS sequences and cyclic beam shift; and/or beam sequences in beam sweeps.
8. The WTRU of claim 7, wherein the SYNC operation mode comprises one of single beam operation mode, multi-beam operation mode, and partial multi-beam operation mode.
9. A method for synchronizing a WTRU with a beamforming cellular communications network, comprising:
receiving, at the WTRU, within a beam, a SYNC burst set, comprising a plurality of SYNC bursts that each comprise multiple symbols, from the beamforming cellular communications network; and determining, from the SYNC burst set, the synchronization parameters for the WTRU to synchronize with the beamforming cellular communications network.
10. The method of claim 9, wherein the SYNC burst set is received using one of a multi-beam sync signal oriented by the beamforming cellular communications network, a multi-beam sync schedule oriented by the WTRU, a multi-beam short SYNC signal, and a hybrid SYNC structure oriented based on the beamforming cellular communications network and the WTRU.
11. The method of claim 9, wherein the synchronization parameters comprise one or more of a SYNC signal type, a beam sweep type, a beam sweep order, an ACK resource configuration, and a beam hopping pattern.
12. The method of claim 9, further comprising the WTRU performing a beam sweep in order to receive the SYNC burst set and wherein the beam sweep comprises a partial beam sweep and the WTRU determines to conduct the partial beam sweep on certain beams sent by the beamforming cellular communications network.
13. The method of claim 9, further comprising the WTRU performing a first beam sweep, determining a first beam pairing between the WTRU and the beamforming cellular communications network, and performing a second beam sweep with the first beam pairing.
14. The method of claim 9 further comprising the WTRU determining whether a SYNC operation mode is single beam or multi-beam by using one of PSS and SSS timing and/or frequency differences, PSS sequences and cyclic beam shift; and/or beam sequences in beam sweeps.
15. The method of claim 9, wherein the SYNC operation mode comprises one of single beam operation mode, multi-beam operation mode, and partial multi-beam operation mode.
Associated Portfolios
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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.