Abstract
Systems and methodologies are described that facilitate signaling and detecting discontinuous transmission (DTX) in a wireless communication environment. A DTX indicator and Channel Quality Indicator (CQI) feedback can be multiplexed within a common uplink control channel subframe and transmitted to a base station when the access terminal is operating in DTX mode for an Acknowledgement Channel. Further, when operating in non-DTX mode, the access terminal can multiplex an ACK indicator or a NAK indicator with the CQI feedback within a common uplink control channel subframe, which can thereafter be transferred to the base station. Accordingly, the base station can detect DTX operation or non-DTX operation of the access terminal. For example, reference signal symbols can carry one of the DTX indicator, the ACK indicator, or the NAK indicator. Pursuant to another example, the CQI feedback and the DTX indicator can be combined and carried jointly by non-reference signal symbols.
Technologies
Product
Use Cases
Services
Claim
1. A method that facilitates signaling discontinuous transmission (DTX) to a base station in a wireless communication environment, comprising: encoding Channel Quality Indicator (CQI) information and a DTX indicator within an uplink control channel subframe corresponding to a downlink control channel when the downlink control channel is determined to have been unsuccessfully decoded; and transmitting the encoded uplink control channel subframe to a base station.
2. The method of claim 1, further comprising encoding the CQI information and one of an Acknowledge character (ACK) indicator or a Negative-Acknowledge character (NAK) indicator within the uplink control channel subframe corresponding to the downlink control channel when the downlink control channel is determined to have been successfully decoded.
3. The method of claim 2, further comprising determining whether the downlink control channel is successfully decoded by recognizing whether an assignment corresponding to the uplink control channel sent via the downlink control channel is received and decoded.
4. The method of claim 2, further comprising: encoding reference signal symbols within a slot to include one of the DTX indicator, the ACK indicator, or the NAK indicator; and encoding non-reference signal symbols within the slot to include the CQI information. WO 2009/100220 PCT/US2009/033221 34
5. The method of claim 4, further comprising: employing a first mapping for the reference signal symbols within the slot when incorporating the DTX indicator; utilizing a second mapping for the reference signal symbols within the slot when incorporating the ACK indicator; and using a third mapping for the reference signal symbols within the slot when incorporating the NAK indicator.
6. The method of claim 5, further comprising: setting a first reference signal symbol within the slot to 1 and a second reference signal symbol within the slot to j when employing the first mapping to incorporate the DTX indicator; setting the first reference signal symbol within the slot to 1 and the second reference signal symbol within the slot to -1 when utilizing the second mapping to incorporate the ACK indicator; and setting the first reference signal symbol within the slot to 1 and the second reference signal symbol within the slot to 1 when using the third mapping to incorporate the NAK indicator.
7. The method of claim 5, further comprising: setting a first reference signal symbol within the slot to 1 and a second reference signal symbol within the slot to 1 when employing the first mapping to incorporate the DTX indicator; setting the first reference signal symbol within the slot to 1 and the second reference signal symbol within the slot to -1 when utilizing the second mapping to incorporate the ACK indicator; and setting the first reference signal symbol within the slot to 1 and the second reference signal symbol within the slot to 1 when using the third mapping to incorporate the NAK indicator. WO 2009/100220 PCT/US2009/033221 35
8. The method of claim 4, further comprising setting a first reference signal symbol within the slot to 1 and a second reference signal symbol within the slot to 1 when in DTX mode in connection with downlink multiple input multiple output (MIMO) operation.
9. The method of claim 2, further comprising: adding a transmission state bit to a set of bits that represent the CQI information; setting a value for the transmission state bit to signal one of DTX operation or non-DTX operation; and encoding the transmission state bit and the bits the represent the CQI information jointly upon non-reference signal symbols in a slot
10. The method of claim 9, wherein the transmission state bit can toggle between one of linearly adding or not adding a particular Reed-Muller (RM) basis vector based upon one of DTX operation or non-DTX operation
11. A wireless communications apparatus, comprising: a memory that retains instructions related to encoding Channel Quality Indicator (CQI) information and a discontinuous transmission (DTX) indicator within an uplink control channel subframe corresponding to a downlink control channel when the downlink control channel is determined to have been unsuccessfully decoded, encoding the CQI information and one of an Acknowledge character (ACK) indicator or a Negative-Acknowledge character (NAK) indicator within the uplink control channel subframe corresponding to the downlink control channel when the downlink control channel is determined to have been successfully decoded, and sending the encoded uplink control channel subframe to a base station; and a processor, coupled to the memory, configured to execute the instructions retained in the memory
12. The wireless communications apparatus of claim 11, wherein the memory further retains instructions related to determining whether the downlink control channel is successfully decoded by recognizing whether an assignment corresponding to the uplink control channel sent via the downlink control channel is received and decoded. WO 2009/100220 PCT/US2009/033221 3613. The wireless communications apparatus of claim 11, wherein the memory further retains instructions related to encoding reference signal symbols within a slot to include one of the DTX indicator, the ACK indicator, or the NAK indicator, and encoding non-reference signal symbols within the slot to include the CQI information
14. The wireless communications apparatus of claim 13, wherein the memory further retains instructions related to employing a first mapping for the reference signal symbols within the slot when incorporating the DTX indicator, utilizing a second mapping for the reference signal symbols within the slot when incorporating the ACK indicator, and using a third mapping for the reference signal symbols within the slot when incorporating the NAK indicator
15. The wireless communications apparatus of claim 14, wherein the memory further retains instructions related to setting a first reference signal symbol within the slot to 1 and a second reference signal symbol within the slot to j when employing the first mapping to incorporate the DTX indicator, setting the first reference signal symbol within the slot to 1 and the second reference signal symbol within the slot to -1 when utilizing the second mapping to incorporate the ACK indicator, and setting the first reference signal symbol within the slot to 1 and the second reference signal symbol within the slot to 1 when using the third mapping to incorporate the NAK indicator
16. The wireless communications apparatus of claim 14, wherein the memory further retains instructions related to setting a first reference signal symbol within the slot to 1 and a second reference signal symbol within the slot to 1 when employing the first mapping to incorporate the DTX indicator, setting the first reference signal symbol within the slot to 1 and the second reference signal symbol within the slot to -1 when utilizing the second mapping to incorporate the ACK indicator, and setting the first reference signal symbol within the slot to 1 and the second reference signal symbol within the slot to 1 when using the third mapping to incorporate the NAK indicator. WO 2009/100220 PCT/US2009/033221 3717. The wireless communications apparatus of claim 13, wherein the memory further retains instructions related to setting a first reference signal symbol within the slot to 1 and a second reference signal symbol within the slot to 1 when in DTX mode in connection with downlink multiple input multiple output (MIMO) operation
18. The wireless communications apparatus of claim 11, wherein the memory further retains instructions related to adding a transmission state bit to a set of bits that represent the CQI information, setting a value for the transmission state bit to signal one of DTX operation or non-DTX operation, and encoding the transmission state bit and the bits the represent the CQI information together upon non-reference signal symbols in a slot
19. The wireless communications apparatus of claim 18, wherein the transmission state bit can toggle between one of linearly adding or not adding a particular Reed Muller (RM) basis vector based upon one of DTX operation or non-DTX operation.
20. A wireless communications apparatus that enables signaling discontinuous transmission (DTX) with Channel Quality Indicator (CQI) information to a base station in a wireless communication environment, comprising: means for encoding an uplink control channel subframe to include CQI information with at least one indicator that distinguishes between successful decoding of a downlink control channel and a downlink data channel, failed decoding of the downlink control channel, and failed decoding of the downlink data channel; and means for transmitting the uplink control channel subframe to a base station.
21. The wireless communications apparatus of claim 20, further comprising means for incorporating a DTX indicator with the CQI information upon a common set of symbols within the uplink control channel subframe.
22. The wireless communications apparatus of claim 21, wherein the common set of symbols includes non-reference signal symbols. WO 2009/100220 PCT/US2009/033221 38
23. The wireless communications apparatus of claim 20, further comprising means for including a DTX indicator upon reference signal symbols within the uplink control channel subframe.
24. The wireless communications apparatus of claim 23, wherein the CQI information is included upon non-reference signal symbols within the uplink control channel subframe.
25. The wireless communications apparatus of claim 23, wherein a particular mapping that corresponds to the DTX indicator from a set of possible mappings is employed for the reference signal symbols.
26. The wireless communications apparatus of claim 25, wherein the particular mapping includes setting a first reference signal symbol within a slot to 1 and a second reference signal symbol within the slot to j.
27. The wireless communications apparatus of claim 25, wherein the particular mapping includes setting a first reference signal symbol within a slot to 1 and a second reference signal symbol within the slot to 1.
28. A computer program product, comprising: a computer-readable medium comprising: code for encoding an uplink control channel subframe to include Channel Quality Indicator (CQI) information with at least one indicator that distinguishes between successful decoding of a downlink control channel and a downlink data channel, failed decoding of the downlink control channel, and failed decoding of the downlink data channel; and code for transferring the uplink control channel subframe to a base station.
29. The computer program product of claim 28, wherein the computer-readable medium further comprises code for incorporating a DTX indicator with the CQI information upon a common set of symbols within the uplink control channel subframe. WO 2009/100220 PCT/US2009/033221 39
30. The computer program product of claim 28, wherein the computer-readable medium further comprises code for including a DTX indicator upon reference signal symbols within the uplink control channel subframe.
31. The computer program product of claim 30, wherein a particular mapping that corresponds to the DTX indicator from a set of possible mappings is employed for the reference signal symbols.
32. The computer program product of claim 31, wherein the particular mapping includes setting a first reference signal symbol within a slot to 1 and a second reference signal symbol within the slot to j.
33. The computer program product of claim 31, wherein the particular mapping includes setting a first reference signal symbol within a slot to 1 and a second reference signal symbol within the slot to 1.
34. In a wireless communications system, an apparatus comprising: a processor configured to: determine whether a downlink control channel is successfully decoded by recognizing whether an assignment corresponding to an uplink control channel sent via the downlink control channel is received and decoded; encode Channel Quality Indicator (CQI) information and a DTX indicator within an uplink control channel subframe corresponding to the downlink control channel when the downlink control channel is determined to have been unsuccessfully decoded; encode the CQI information and one of an Acknowledge character (ACK) indicator or a Negative-Acknowledge character (NAK) indicator within the uplink control channel subframe corresponding to the downlink control channel when the downlink control channel is determined to have been successfully decoded; and transmit the encoded uplink control channel subframe to a base station. WO 2009/100220 PCT/US2009/033221 40
35. A method that facilitates detecting discontinuous transmission (DTX) in a wireless communication environment, comprising: receiving an uplink control channel subframe from an access terminal; decoding the uplink control channel subframe to identify Channel Quality Indicator (CQI) feedback from the access terminal; and decoding the uplink control channel subframe to detect at least one indicator that distinguishes between successful decoding, a downlink control channel decoding error, and a downlink data channel decoding error encountered by the access terminal.
36. The method of claim 35, further comprising assuming DTX operation by the access terminal when the uplink control channel subframe fails to correspond to an assignment sent via a downlink transmission to the access terminal.
37. The method of claim 35, wherein the at least one indicator is detected from a first set of symbols within a slot, and the CQI feedback is identified from a second set of symbols within the slot, wherein the first set and the second set are mutually exclusive.
38. The method of claim 37, wherein the first set of symbols includes reference signal signals and the second set of symbols includes non-reference signal symbols.
39. The method of claim 35, wherein the at least one indicator is detected based at least in part upon a value of a transmission state bit added to CQI information bits carried by a set of symbols within the uplink control channel subframe.
40. A wireless communications apparatus, comprising: a memory that retains instructions related to obtaining an uplink control channel subframe from an access terminal, decoding the uplink control channel subframe to identify Channel Quality Indicator (CQI) feedback from the access terminal, and decoding the uplink control channel subframe to detect at least one indicator that distinguishes between successful decoding, a downlink control channel decoding error, and a downlink data channel decoding error encountered by the access terminal; and a processor, coupled to the memory, configured to execute the instructions retained in the memory. WO 2009/100220 PCT/US2009/033221 41
41. The wireless communications apparatus of claim 40, wherein the at least one indicator is detected from a first set of symbols within a slot, and the CQI feedback is identified from a second set of symbols within the slot, wherein the first set and the second set are mutually exclusive.
42. The wireless communications apparatus of claim 41, wherein the first set of symbols includes reference signal signals and the second set of symbols includes non reference signal symbols.
43. The wireless communications apparatus of claim 40, wherein the at least one indicator is detected based at least in part upon a value of a transmission state bit added to CQI information bits carried by a set of symbols within the uplink control channel subframe.
44. A wireless communications apparatus that enables detecting discontinuous transmission (DTX) signaled by an access terminal in a wireless communication environment, comprising: means for obtaining an uplink control channel subframe from an access terminal; and means for decoding the uplink control channel subframe to recognize Channel Quality Indicator (CQI) feedback and at least one indicator that distinguishes between successful decoding, downlink control channel misdetection, and downlink data channel misdetection encountered by the access terminal.
45. The wireless communications apparatus of claim 44, wherein the at least one indicator is detected from reference signal symbols within a slot, and the CQI feedback is identified from non-reference signal symbols within the slot.
46. The wireless communications apparatus of claim 44, wherein the at least one indicator is detected based at least in part upon a value of a transmission state bit added to CQI information bits carried by a set of symbols within the uplink control channel subframe. WO 2009/100220 PCT/US2009/033221 42
47. A computer program product, comprising: a computer-readable medium comprising: code for receiving an uplink control channel subframe from an access terminal; and code for decoding the uplink control channel subframe to recognize Channel Quality Indicator (CQI) feedback and at least one indicator that distinguishes between successful decoding, downlink control channel misdetection, and downlink data channel misdetection experienced by the access terminal.
48. The computer program product of claim 47, wherein the at least one indicator is detected from reference signal symbols within a slot, and the CQI feedback is identified from non-reference signal symbols within the slot.
49. The computer program product of claim 47, wherein the at least one indicator is detected based at least in part upon a value of a transmission state bit added to CQI information bits carried by a set of symbols within the uplink control channel subframe.
50. In a wireless communications system, an apparatus comprising: a processor configured to: obtain an uplink control channel subframe from an access terminal; decode the uplink control channel subframe to discover Channel Quality Indicator (CQI) feedback from the access terminal; and decode the uplink control channel subframe to recognize at least one indicator that distinguishes between successful decoding, a downlink control channel decoding error, and a downlink data channel decoding error encountered by the access terminal.']
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SUMMARY
ClaimChart-AU2009212371A1-STO
Patent number:AU2009212371A1
Claim Chart Type : SEP Claim Chart
Price: 200 €
Note:
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.