Abstract
Methods and apparatus for millimeter wave (mmW) beam acquisition are disclosed. An apparatus includes a transmitter configured to transmit millimeter wave (mmW) WTRU (mmW WTRU) information over a cellular system to a base station a receiver and a processor. The receiver receives a list of candidate mmW base stations (mB) including mmW acquisition start timing information from the base station, and the processor calculates correlation values around the received mmW acquisition start timing information for the mBs in the list.
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Specification Information
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Technologies
Resource configuration Configuration Information
Product
User Equipment (UE/Terminal)
Use Cases
Wireless communication
Services
Beam Management
Claim
1. A method, implemented at a wireless transmit/receive unit (WTRU), for millimeter wave (mmW) beam acquisition, comprising:
transmitting millimeter wave (mmW) WTRU (mmW WTRU) information over a cellular system to a base station; receiving a list of candidate mmW base stations (mB) including mmW acquisition start timing information; and calculating correlation values around the received mmW acquisition start timing information for the mBs in the list.
2. The method of claim 1, wherein the mmW acquisition start timing information includes coarse timing information relative to the cellular system timing.
3. The method of claim 1, further comprising:
receiving at least one of a number of beam sweeping repetitions, mB and beam specific indices corresponding to signature sequences, and resource assignments for mmW WTRU reporting.
4. The method of claim 1, wherein the mmw WTRU performs sliding window correlations using signature sequences corresponding to mBs and beams in the list.
5. The method of claim 1, further comprising:
generating a message including the N highest received mmW signal strengths across the candidate mB and beam combinations and associated mB and beam indices.
6. The method of claim 1, further comprising:
transmitting feedback information over at least one of a cellular link or an mmW link as directed by the base station.
7. The method of claim 1, further comprising:
transmitting at least one of highest received mmW signal strength and corresponding mB/beam indices, and highest received mmW signal strength exceeding a predetermined threshold.
8. The method of claim 1, further comprising:
detecting modulated beacons transmitted by mBs; correlating the modulated beacons with a sliding window filter; determining a specific mB and beam pair based on highest peak energy on a condition that single stage modulation is used; and determining beacon frame timing and specific beam identity on a condition that multiple stage modulation is used.
9. A method, implemented at a base station, for millimeter wave (mmW) beam acquisition, comprising:
obtaining millimeter wave (mmW) WTRU (mmW WTRU) information over a cellular system, wherein the mmW WTRU information includes at least one of location, coarse timing and mmW capability at the mmW WTRU; generating a candidate millimeter wave base station (mB) list using the mmW WTRU information and at least distance criteria; transmitting the candidate mB list and mmW acquisition start timing information to the mmW WTRU and candidate mBs; receiving N highest received mmW signal strengths across the candidate mB and beam combinations and associated mB and beam indices; and determining viability of mmW link based on the N highest received mmW signal strengths and mB load status.
10. The method of claim 9, wherein the candidate mB list considers grouping of mmW WTRUs with same mobility pattern as candidate mBs and the base station.
11. The method of claim 9, wherein the candidate mB list is obtained using historical data from a database.
12. The method of claim 11, wherein a preferred beam list is determined from at least one of the database, reported mmW WTRU orientation, mB loading condition, and quality of service.
13. The method of claim 9, wherein the candidate list is determined based on at least one of on line of sight (LOS) information, and prior successful connection.
14. The method of claim 9, wherein the candidate mB list is determined using a predetermined filtering criteria to generate multiple candidate mB lists, each of the multiple candidate mB lists corresponding to different system connectivity scenarios that are filtered so that the base station can make a dynamic mmW candidate link selection corresponding to instantaneous link status feedback.
15. The method of claim 9, wherein the acquisition mode and acquisition start time are specified in a number of mmW symbols relative to the cellular system radio frames.
16. The method of claim 9, further comprising:
transmitting beacon sequence information to the mB and mmW WTRU, wherein the beacon sequence information includes one of beacon sequences or a notification to generate beacon sequences based on mB and beam ID.
17. A method, implemented at a millimeter wave (mmW) base station (mB), for mmW beam acquisition, comprising:
receiving an mB configuration request from a base station including at least an acquisition start time and a preferred beam list; and at the acquisition start time, transmitting acquisition beacons on an assigned mmW resource unit (mRU) using sequential beams as listed in the preferred beam list.
18. The method of claim 17, wherein the acquisition beacons are modulated by at least one of beam specific sequences and mB specific sequences.
19. The method of claim 17, wherein the acquisition beacons are divided into parts and the parts are modulated by at least one of mB specific sequences and a combination of mB specific sequences and beam specific sequences.
20. A wireless transmit/receive unit (WTRU) configured for millimeter wave (mmW) beam acquisition, comprising:
a transmitter configured to transmit millimeter wave (mmW) WTRU (mmW WTRU) information over a cellular system to a base station; a receiver configured to receive a list of candidate mmW base stations (mB) including mmW acquisition start timing information; and a processor configured to calculate correlation values around the received mmW acquisition start timing information for the mBs in the list.
21. The WTRU of claim 20, wherein the mmW acquisition start timing information includes coarse timing information relative to the cellular system timing.
22. The WTRU of claim 20, wherein the receiver is configured to receive at least one of a number of beam sweeping repetitions, mB and beam specific indices corresponding to signature sequences, and resource assignments for mmW WTRU reporting.
23. The WTRU of claim 20, wherein the mmw WTRU performs sliding window correlations using signature sequences corresponding to mBs and beams in the list.
24. The WTRU of claim 20, wherein the processor if configured to generate a message including the N highest received mmW signal strengths across the candidate mB and beam combinations and associated mB and beam indices.
25. The WTRU of claim 20, wherein the transmitter is configured to transmit feedback information over at least one of a cellular link or an mmW link as directed by the base station.
26. The WTRU of claim 20, wherein the transmitter is configured to transmit at least one of highest received mmW signal strength and corresponding mB/beam indices, and highest received mmW signal strength exceeding a predetermined threshold.
27. The WTRU of claim 20, wherein the processor is configured to:
detect modulated beacons transmitted by mBs; correlate the modulated beacons with a sliding window filter; determine a specific mB and beam pair based on highest peak energy on a condition that single stage modulation is used; and determine beacon frame timing and specific beam identity on a condition that multiple stage modulation is used.
28. A base station configured for millimeter wave (mmW) beam acquisition, comprising:
a processor, a receiver and a transmitter; the processor and receiver configured to obtain millimeter wave (mmW) WTRU (mmW WTRU) information over a cellular system, wherein the mmW WTRU information includes at least one of location, coarse timing and mmW capability at the mmW WTRU; the processor configured to generate a candidate millimeter wave base station (mB) list using the mmW WTRU information and at least distance criteria; the processor configured to transmit the candidate mB list and mmW acquisition start timing information to the mmW WTRU and candidate mBs; the receiver configured to receiving N highest received mmW signal strengths across the candidate mB and beam combinations and associated mB and beam indices; and the processor configured to determine viability of mmW link based on the N highest received mmW signal strengths and mB load status.
29. A millimeter wave (mmW) base station (mB) configured for mmW beam acquisition, comprising:
a receiver configured to receive an mB configuration request from a base station including at least an acquisition start time and a preferred beam list; and a transmitter configured to, at the acquisition start time, transmit acquisition beacons on an assigned mmW resource unit (mRU) using sequential beams as listed in the preferred beam list.
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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.