Abstract
Systems and methods for controlling sounding reference signal transmission are provided; a user equipment starts transmitting the sounding reference signal in anticipation of uplink data transmission and then discontinues transmitting the sounding reference signal after completion of uplink data transmission.
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| 4G | 21/03/2012 | ISLD-201202-005 | RESEARCH IN MOTION LTD |
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Specification Information
Specification Information
Technologies
Family Information
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Resource configuration Sounding reference signals(SRS) Transmission DRX/EDRX/DTX/EDTX
Product
User Equipment (UE/Terminal)
Use Cases
Wireless communication
Services
Transmitting/receiving data in uplink
Claim
1. A method in a user equipment (UE), the method comprising:
operating the user equipment using discontinuous reception (DRX) control, the DRX control causing a receiver to monitor downlink transmissions during on periods;
upon receiving data for uplink transmission, transmitting an uplink scheduling request in response to receiving the data without waiting for a next on period;
transmitting sounding reference signal (SRS) transmissions responsive to transmitting the uplink scheduling request.', 'operating the user equipment using discontinuous reception (DRX) control, the DRX control causing a receiver to monitor downlink transmissions during on periods;', 'upon receiving data for uplink transmission, transmitting an uplink scheduling request in response to receiving the data without waiting for a next on period;', 'transmitting sounding reference signal (SRS) transmissions responsive to transmitting the uplink scheduling request.
2. The method of claim 1 wherein the SRS transmissions are transmitted using a defined set of SRS transmission opportunities.
3. The method of claim 2, wherein the defined set of SRS transmission opportunities are defined by signaling information received by the UE.
4. The method of claim 2, wherein the defined set of SRS transmission opportunities repeat periodically.
5. The method of claim 1, wherein the DRX control is configured in accordance with a configured DRX cycle that includes on and off periods of the DRX cycle.
6. The method of claim 5, wherein the uplink scheduling request is transmitted even if the DRX cycle is in an off period.
7. The method of claim 1, further comprising:
responsive to transmitting the uplink scheduling request, causing the DRX control to activate the receiver.', 'responsive to transmitting the uplink scheduling request, causing the DRX control to activate the receiver.
8. The method of claim 1, further comprising starting an inactivity timer upon reception of an uplink grant.
9. The method of claim 8, wherein said transmitting SRS transmissions continues until the inactivity timer expires
10. The method of claim 1, wherein transmitting the uplink scheduling request includes using a scheduling request channel identified in signaling information received by the UE
11. The method of claim 10, wherein the uplink scheduling request is transmitted at a next available opportunity of the assigned scheduling request channel that occurs after receiving the data for uplink transmission
12. A user equipment (UE) comprising:
a receiver;
a processor configured to operate the user equipment using discontinuous reception (DRX) control, the DRX control causing the receiver to monitor downlink transmissions during on periods; and
a transmitter configured to transmit, upon receiving data for uplink transmission, an uplink scheduling request in response to receiving the data without waiting for a next on period and, responsive to transmitting the uplink scheduling request, to transmit sounding reference signal (SRS) transmissions.', 'a receiver;', 'a processor configured to operate the user equipment using discontinuous reception (DRX) control, the DRX control causing the receiver to monitor downlink transmissions during on periods; and', 'a transmitter configured to transmit, upon receiving data for uplink transmission, an uplink scheduling request in response to receiving the data without waiting for a next on period and, responsive to transmitting the uplink scheduling request, to transmit sounding reference signal (SRS) transmissions
13. The user equipment of claim 12 wherein the transmitter transmits the SRS transmissions using a defined set of SRS transmission opportunities
14. The user equipment of claim 13, wherein the defined set of SRS transmission opportunities are defined by signaling information received by the UE
15. The user equipment of claim 13, wherein the defined set of SRS transmission opportunities repeat periodically
16. The user equipment of claim 12, wherein the DRX control is configured in accordance with a configured DRX cycle that includes on and off periods of the DRX cycle
17. The user equipment of claim 16, wherein the transmitter transmits the uplink scheduling request even if the DRX cycle is in an off period
18. The user equipment of claim 12, further comprising:
responsive to transmitting the uplink scheduling request, the processor is further configured to cause the DRX control to activate the receiver.', 'responsive to transmitting the uplink scheduling request, the processor is further configured to cause the DRX control to activate the receiver
19. The user equipment of claim 12, wherein the processor is further configured to start an inactivity timer upon reception of an uplink grant.
20. The user equipment of claim 19, wherein the transmitter continues transmitting said transmitting SRS transmissions until the inactivity timer expires.
21. The user equipment of claim 12, wherein transmitting the uplink scheduling request includes using a scheduling request channel identified in signaling information received by the UE.
22. The user equipment of claim 21, wherein the transmitter transmits the uplink scheduling request at a next available opportunity of the assigned scheduling request channel that occurs after receipt of the data for uplink transmission.
23. A non-transitory computer-readable medium having computer executable instructions stored thereon for implementing a method in a user equipment (UE), the method comprising:
operating the user equipment using discontinuous reception (DRX) control, the DRX control causing a receiver to monitor downlink transmissions during on periods;
upon receiving data for uplink transmission, transmitting an uplink scheduling request in response to receiving the data without waiting for a next on period;
transmitting sounding reference signal (SRS) transmissions responsive to transmitting the uplink scheduling request.', 'operating the user equipment using discontinuous reception (DRX) control, the DRX control causing a receiver to monitor downlink transmissions during on periods;', 'upon receiving data for uplink transmission, transmitting an uplink scheduling request in response to receiving the data without waiting for a next on period;', 'transmitting sounding reference signal (SRS) transmissions responsive to transmitting the uplink scheduling request.
24. The computer-readable medium of claim 23 wherein the SRS transmissions are transmitted using a defined set of SRS transmission opportunities.
25. The computer-readable medium of claim 24, wherein the defined set of SRS transmission opportunities are defined by signaling information received by the UE.
26. The computer-readable medium of claim 24, wherein the defined set of SRS transmission opportunities repeat periodically.
27. The computer-readable medium of claim 23, wherein the DRX control is configured in accordance with a configured DRX cycle that includes on and off periods of the DRX cycle aid.
28. The computer-readable medium of claim 23, further comprising:
responsive to transmitting the uplink scheduling request, causing the DRX control to activate the receiver.', 'responsive to transmitting the uplink scheduling request, causing the DRX control to activate the receiver.
29. The computer-readable medium of claim 23, further comprising starting an inactivity timer upon reception of an uplink grant and wherein said transmitting SRS transmissions continues until the inactivity timer expires.
30. The computer-readable medium of claim 23, wherein transmitting the uplink scheduling request includes using a scheduling request channel identified in signaling information received by the UE and wherein the uplink scheduling request is transmitted at a next available opportunity of the assigned scheduling request channel that occurs after receiving the data for uplink transmission.']
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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.