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
| All Granted Patents In Patent Family : | ---- |
| All Pending Patents In Patent Family : | ---- |
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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 of uplink reference signal transmission in a user equipment comprising: starting uplink reference signal transmission in anticipation of transmitting uplink data; transmitting uplink data after starting uplink reference signal transmission; continuing uplink reference signal transmission until completion of transmission of the uplink data.
2. The method of claim 1 further comprising: controlling a receiver in the user equipment to have on periods and off periods; transmitting a request for an uplink transmission resource to transmit the uplink data; wherein transmitting the request for the uplink transmission resource, and transmitting the uplink data are both performed irrespective of the on and off periods of the receiver.
3. The method of claim 2 further comprising: receiving signalling to configure the user equipment to be able to transmit the request for the uplink transmission resource and to transmit the uplink data irrespective of the on and off periods of the receiver.
4. The method of anyone of claims 1 - 3 further comprising: maintaining a definition of an available set of uplink reference signal transmission opportunities; wherein continuing uplink reference signal transmission until completion of transmission of the uplink data comprises transmitting uplink reference signal transmissions until a last of the available set of uplink reference signal transmission opportunities that occurs during uplink data transmission and then discontinuing uplink reference signal transmission.
5. The method of anyone of claims 1 - 3 further comprising: maintaining a definition of an available set of uplink reference signal transmission opportunities; making at least one retransmission in respect of the uplink transmission; wherein continuing uplink reference signal transmission until completion of transmission of the uplink data comprises transmitting uplink reference signal transmission until a last of the available set of uplink reference signal transmission opportunities that occurs during the at least one retransmission in respect of the uplink transmission and then discontinuing uplink reference signal transmission.
6. The method of anyone of claims 1 - 3 further comprising: maintaining a definition of an available set of uplink reference signal transmission opportunities; wherein continuing uplink reference signal transmission until completion of transmission of the uplink data comprises transmitting uplink reference signal transmission until a last of the available set of uplink reference signal transmission opportunities that occurs during uplink data transmission and then discontinuing uplink reference signal transmission; the method further comprising: making a retransmission in respect of the uplink transmission; starting uplink reference signal transmission in anticipation of the retransmission; continuing uplink reference signal transmission until completion of the retransmission.
7. The method of anyone of claims 1 - 3 further comprising: receiving signalling indicating a grant of an uplink resource to make said uplink data transmission; starting an inactivity timer after receiving said signalling; wherein continuing uplink reference signal transmission until completion of transmission of the uplink data comprises continuing uplink reference signal transmission until the inactivity timer is expired and then discontinuing uplink reference signal transmission.
8. The method of anyone of claims 1 - 7 further comprising: transmitting a request for an uplink transmission resource to transmit the uplink data using an assigned scheduling request channel assignment at a next available opportunity after the start of receipt of the uplink data.
9. The method of anyone of claims 1 - 3, 7 further comprising: maintaining a definition of an available set of uplink reference signal transmission opportunities; transmitting a request for an uplink transmission resource to transmit the uplink data; wherein starting uplink reference signal transmission in anticipation of transmitting said uplink data comprises starting transmitting an uplink reference signal transmission in a first of said available set of uplink reference signal transmission opportunities that occurs immediately after transmitting the request for the uplink transmission resource
10. The method of claim 9 wherein transmitting a request for an uplink transmission resource to transmit the uplink data comprises transmitting a request for uplink transmission using a previously assigned semi-persistent resource
11. The method of claim 9 wherein transmitting a request for an uplink transmission resource to transmit the uplink data comprises transmitting a request for uplink transmission using a contention based access channel
12. The method of anyone of claims 1 - 11 further comprising: transmitting reference signal transmissions for uplink timing alignment and for uplink channel quality assessment
13. The method of claim 12 further comprising: receiving signalling that allocates reference signal transmission opportunities for uplink timing alignment and reference signal transmission opportunities for uplink channel quality assessment; transmitting reference signal transmissions for uplink timing alignment in accordance with the signalling; transmitting reference signal transmissions for uplink channel quality assessment in accordance with the signalling; wherein transmitting reference signal transmissions for uplink timing alignment in accordance with the signalling and transmitting reference signal transmissions for uplink channel quality assessment in accordance with the signalling comprises transmitting a single reference signal transmission for both uplink timing alignment and uplink channel quality assessment for any reference signal transmission opportunities for uplink timing alignment that coincide with reference signal transmission opportunities for uplink channel quality assessment
14. The method of claim 12 further comprising: receiving signalling that contains a definition of reference signal transmission opportunities to be made available for one or both of channel quality assessment and timing alignment, the information identifying a minimum period for transmission of the reference signal for channel quality assessment and/or a minimum period for transmission of the reference signal for timing alignment; transmitting reference signal transmissions in accordance with the definition of transmission opportunities, and subject to the minimum period(s) such that whenever possible a single reference signal is sent for both channel quality assessment and timing alignment
15. The method of anyone of claims 1 - 14 wherein each reference signal is a sounding reference signal
16. A computer readable medium having computer executable instructions stored thereon for implementing a method comprising: starting uplink reference signal transmission in anticipation of transmitting uplink data; transmitting uplink data after starting uplink reference signal transmission; continuing uplink reference signal transmission until completion of transmission of the uplink data
17. A user equipment comprising: a receive module; an uplink signal generation module that starts generating the uplink reference signal in anticipation of transmitting uplink data and continues to generate uplink reference signals until completion of transmission of the uplink data; and a transmit module configured to transmit the uplink data and to transmit the uplink reference signals generated by the uplink signal generation module
18. The user equipment of claim 17 wherein the uplink signal generation module continues to generate uplink reference signals until a last of an available set of uplink reference signal transmission opportunities that occurs during uplink data transmission and then discontinues generating uplink reference signals
19. The user equipment of claim 17 wherein the uplink signal generation module continues to generate uplink reference signals until a last of an available set of uplink reference signal transmission opportunities that occurs during uplink data transmission or any associated retransmissions and then discontinues generating uplink reference signals.
20. The user equipment of claim 17 wherein the uplink signal generation module continues to generate uplink reference signals until expiry of an inactivity timer.
21. A method for uplink reference signal transmission in a user equipment comprising: starting an on duration when a scheduling request is to be sent; sending an uplink reference signal transmission during the on duration; discontinuing the uplink reference signal after an expiration of the on duration.
22. The method of claim 21 wherein the on duration is part of a DRX cycle.
23. The method of claim 22 wherein the DRX cycle occurs in connected mode.
24. The method of anyone of claims 21 -23 further comprising: controlling a receiver in the user equipment to have on periods and off periods; transmitting a request for an uplink transmission resource to transmit uplink data; wherein transmitting the request for the uplink transmission resource, and transmitting the uplink data are both performed irrespective of the on and off periods of the receiver.
25. The method of claim 24 further comprising: receiving signalling to configure the user equipment to be able to transmit the request for the uplink transmission resource and to transmit the uplink data irrespective of the on and off periods of the receiver.
26. The method of anyone of claims 21 -24 further comprising: maintaining a definition of uplink reference signal transmission opportunities; transmitting uplink reference signal transmissions in anticipation of making a transmission of uplink data and until a last of the uplink reference signal transmission opportunities that occurs during uplink data transmission and then discontinuing uplink reference signal transmission.
27. The method of anyone of claims 21 -24 further comprising: maintaining a definition of uplink reference signal transmission opportunities; making at least one retransmission in respect of the uplink transmission; transmitting uplink reference signal transmissions in anticipation of making a transmission of uplink data and until a last of the uplink reference signal transmission opportunities that occurs during the at least one retransmission in respect of the uplink transmission and then discontinuing uplink reference signal transmission.
28. The method of anyone of claims 21 -24 further comprising: maintaining a definition of uplink reference signal transmission opportunities; transmitting uplink reference signal transmissions in anticipation of making a transmission of uplink data and until a last of the uplink reference signal transmission opportunities that occurs during uplink data transmission and then discontinuing uplink reference signal transmission; the method further comprising: making a retransmission in respect of the uplink transmission; starting uplink reference signal transmission in anticipation of the retransmission; continuing uplink reference signal transmission until completion of the retransmission.
29. The method of anyone of claims 21 -24 further comprising: receiving signalling indicating a grant of an uplink resource to make an uplink data transmission; starting an inactivity timer after receiving said signalling; transmitting uplink reference signal transmissions in anticipation of making the uplink data transmission and until the inactivity timer is expired and then discontinuing uplink reference signal transmission.
30. The method of anyone of claims 21 -29 further comprising: transmitting a request for an uplink transmission resource to transmit the uplink data using an assigned scheduling request channel assignment at a next available opportunity.
31. The method of anyone of claims 21 -24, 29 further comprising: maintaining a definition of uplink reference signal transmission opportunities; transmitting a request for an uplink transmission resource to transmit uplink data; starting uplink reference signal transmission in anticipation of transmitting the uplink data by starting transmitting an uplink reference signal transmission in a first of said uplink reference signal transmission opportunities that occurs immediately after transmitting the request for the uplink transmission resource.
32. The method of claim 31 wherein transmitting a request for an uplink transmission resource to transmit the uplink data comprises transmitting a request for uplink transmission using a previously assigned semi-persistent resource.
33. The method of claim 31 wherein transmitting a request for an uplink transmission resource to transmit the uplink data comprises transmitting a request for uplink transmission using a contention based access channel.
34. The method of anyone of claims 21 -33 further comprising: transmitting reference signal transmissions for uplink timing alignment and for uplink channel quality assessment.
35. The method of claim 34 further comprising: receiving signalling that allocates reference signal transmission opportunities for uplink timing alignment and reference signal transmission opportunities for uplink channel quality assessment; transmitting reference signal transmissions for uplink timing alignment in accordance with the signalling; transmitting reference signal transmissions for uplink channel quality assessment in accordance with the signalling; wherein transmitting reference signal transmissions for uplink timing alignment in accordance with the signalling and transmitting reference signal transmissions for uplink channel quality assessment in accordance with the signalling comprises transmitting a single reference signal transmission for both uplink timing alignment and uplink channel quality assessment for any reference signal transmission opportunities for uplink timing alignment that coincide with reference signal transmission opportunities for uplink channel quality assessment.
36. The method of claim 34 further comprising: receiving signalling that contains a definition of reference signal transmission opportunities to be made available for one or both of channel quality assessment and timing alignment, the information identifying a minimum period for transmission of the reference signal for channel quality assessment and/or a minimum period for transmission of the reference signal for timing alignment; transmitting reference signal transmissions in accordance with the definition of transmission opportunities, and subject to the minimum period(s) such that whenever possible a single reference signal is sent for both channel quality assessment and timing alignment.
37. The method of anyone of claims 21-36 wherein each reference signal is a sounding reference signal.
38. A computer readable medium having computer executable instructions stored thereon for implementing a method comprising: starting uplink reference signal transmission in anticipation of transmitting uplink data; transmitting uplink data after starting uplink reference signal transmission; continuing uplink reference signal transmission until completion of transmission of the uplink data.
39. A user equipment comprising: a receive module; an uplink signal generation module that starts generating the uplink reference signal in anticipation of transmitting uplink data and continues to generate uplink reference signals until completion of transmission of the uplink data; and a transmit module configured to transmit the uplink data and to transmit the uplink reference signals generated by the uplink signal generation module.
40. The user equipment of claim 39 wherein the uplink signal generation module continues to generate uplink reference signals until a last the uplink reference signal transmission opportunities that occurs during uplink data transmission and then discontinues generating uplink reference signals.
41. The user equipment of claim 39 wherein the uplink signal generation module continues to generate uplink reference signals until a last of the uplink reference signal transmission opportunities that occurs during uplink data transmission or any associated retransmissions and then discontinues generating uplink reference signals.
42. The user equipment of claim 39 wherein the uplink signal generation module continues to generate uplink reference signals until expiry of an inactivity timer.
43. A method comprising: transmitting uplink reference signals from before an original data transmission until completion of any retransmissions/HARQ processes that may follow.
44. A method comprising: transmitting uplink reference signals from before transmission of an original data transmission until completion of the original data transmission after which uplink reference signals transmission is stopped; in the event that retransmissions are necessary, restarting uplink reference signals transmission before the retransmission and continuing until completion of the retransmission after which SRS transmission is stopped.']
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SUMMARY
ClaimChart-WO2009117671A2-STO
Patent number:WO2009117671A2
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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.