Abstract
Certain aspects of the present disclosure generally relate to wireless communications and more particularly to techniques for single-frequency network (SFN) operation for machine-type communications (MTC) coverage enhancements. A method is provided for wireless communications by a user equipment (UE). The method generally includes detecting a synchronization signal transmitted from at least one of a plurality of transmission points wherein each of the plurality of transmission points transmits a synchronization signal at a different offset time relative to a subframe boundary in a synchronized network determining a subframe occurring a fixed time after detecting the synchronization signal to monitor for system information transmitted from at least one of the plurality of transmission points and monitoring for a system information block during the determined subframe.
Certain aspects of the present disclosure generally relate to wireless communications and more particularly to techniques for single-frequency network (SFN) operation for machine-type communications (MTC) coverage enhancements. A method is provided for wireless communications by a user equipment (UE). The method generally includes detecting a synchronization signal transmitted from at least one of a plurality of transmission points wherein each of the plurality of transmission points transmits a synchronization signal at a different offset time relative to a subframe boundary in a synchronized network determining a subframe occurring a fixed time after detecting the synchronization signal to monitor for system information transmitted from at least one of the plurality of transmission points and monitoring for a system information block during the determined subframe.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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| 4G | 13/06/2016 | ISLD-201706-016 | QUALCOMM INC |
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Specification Information
Specification Information
Technologies
Family Information
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Technologies
Resource configuration Synchronization
Product
User Equipment (UE/Terminal)
Use Cases
Wireless communication
Services
Transmitting/receiving of control channel/control information
Claim
1. A method for wireless communications, by a user equipment (UE), comprising: detecting at least one synchronization signal broadcasted in single frequency network (SFN) mode from a plurality of transmission points, the at least one synchronization signal providing timing for a subframe boundary in a synchronized network;', 'determining a subframe occurring a fixed time after detecting the at least one synchronization signal to monitor for system information transmitted from at least one of the plurality of transmission points; and', 'monitoring for a system information block during the determined subframe.
2. The method of claim 1, further comprising performing a random access channel (RACH) procedure with at least one of the plurality of transmission points.
3. The method of claim 2, wherein performing the RACH procedure comprises transmitting a RACH message with extended transmission time interval (TTI) to the at least one of the plurality of transmission points.
4. The method of claim 2, further comprising performing RACH at a fixed timing after system information block (SIB) transmission.
5. The method of claim 2, wherein the UE is configured with a plurality of RACH configurations with different resource blocks (RBs).
6. The method of claim 5, further comprising signaling information based on a RACH configuration used to perform the RACH procedure.
7. The method of claim 6, wherein the RACH configuration used to perform the RACH procedure indicates at least one of a new service setup or urgency of the RACH procedure.
8. The method of claim 1 , wherein the plurality of transmission points comprise different groups of transmission points, each group associated with a different virtual cell ID.
9. The method of claim 1 , wherein a plurality of transmission points transmit system information in SFN mode
10. The method of claim 1, wherein different transmission points, corresponding to different cell IDs, transmit different system information
11. The method of claim 1 , wherein the at least one synchronization signal is at least one of power boosted, transmitted with extended duration, or transmitted with narrow bandwidth
12. The method of claim 1 , wherein the monitored system information block combines physical broadcast channel (PBCH) and SIB to convey actual system timing or system timing relative to a next machine -type communications (MTC) subframe
13. A method for wireless communications, by a user equipment (UE), comprising: detecting a synchronization signal transmitted from at least one of a plurality of transmission points, wherein each of the plurality of transmission points transmits a synchronization signal at a different offset time relative to a subframe boundary in a synchronized network;', 'determining a subframe occurring a fixed time after detecting the', 'synchronization signal to monitor for system information transmitted from at least one of the plurality of transmission points; and', 'monitoring for a system information block during the determined subframe
14. The method of claim 13, further comprising performing a random access channel (RACH) procedure with at least one of the plurality of transmission points
15. The method of claim 14, wherein performing the RACH procedure comprises transmitting a RACH message with extended transmission time interval (TTI) to the at least one of the plurality of transmission points
16. The method of claim 14, wherein the UE receives, during the RACH procedure, a response indicating synchronized network timing
17. The method of claim 14, further comprising, after performing the RACH procedure:', 'entering a low power state during a plurality of subframes; and', 'exiting the low power state during subframes designated for communicating with the UE
18. The method of claim 13, wherein the synchronization signal comprises at least a portion containing a common sequence transmitted by each transmission point
19. The method of claim 13, wherein the plurality of transmission points comprise different groups of transmission points, each group associated with a different virtual cell ID.
20. An apparatus for wireless communications, by a user equipment (UE), comprising:', 'means for detecting at least one synchronization signal broadcasted in single frequency network (SFN) mode from a plurality of transmission points, the at least one synchronization signal providing timing for a subframe boundary in a synchronized network;', 'means for determining a subframe occurring a fixed time after detecting the at least one synchronization signal to monitor for system information transmitted from at least one of the plurality of transmission points; and', 'means for monitoring for a system information block during the determined subframe.
21. The apparatus of claim 20, further comprising means for performing a random access channel (RACH) procedure with at least one of the plurality of transmission points.
22. The apparatus of claim 21, wherein the means for performing the RACH procedure comprises means for transmitting a RACH message with extended transmission time interval (TTI) to the at least one of the plurality of transmission points.
23. The apparatus of claim 21, further comprising means for performing RACH at a fixed timing after SIB transmission.
24. The apparatus of claim 21, wherein the UE is configured with a plurality of RACH configurations with different resource blocks (RBs).
25. The apparatus of claim 24, further comprising signaling information based on a RACH configuration used to perform the RACH procedure.
26. The apparatus of claim 25, wherein the RACH configuration used to perform the RACH procedure indicates at least one of a new service setup or urgency of the RACH procedure.
27. An apparatus for wireless communications, by a user equipment (UE), comprising:', 'means for detecting a synchronization signal transmitted from at least one of a plurality of transmission points, wherein each of the plurality of transmission points transmits a synchronization signal at a different offset time relative to a subframe boundary in a synchronized network;', 'means for determining a subframe occurring a fixed time after detecting the synchronization signal to monitor for system information transmitted from at least one of the plurality of transmission points; and', 'means for monitoring for a system information block during the determined subframe.
28. The apparatus of claim 27, further comprising means for performing a random access channel (RACH) procedure with at least one of the plurality of transmission points.
29. The apparatus of claim 28, wherein the means for performing the RACH procedure comprises means for transmitting a RACH message with extended transmission time interval (TTI) to the at least one of the plurality of transmission points.
30. The apparatus of claim 28, wherein the UE receives, during the RACH procedure, a response indicating synchronized network timing.']
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SUMMARY
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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
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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.