Abstract
A method and apparatus for control of uplink feedback information in contention based wireless communications is disclosed. Uplink feedback information such as a channel quality information and hybrid automatic retransmission request (HARQ) acknowledgement/negative acknowledgement (ACK/NACK) information may be transmitted to the universal terrestrial radio access network (UTRAN) by a wireless transmit/receive unit (WTRU) based on explicit and implicit triggers. Providing more frequent and robust information relating to the channel conditions and HARQ status allows the UTRAN to more efficiently utilize the radio resources for downlink data transmissions.
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3G | 14/09/2009 | ISLD-200910-006 | INTERDIGITAL INC |
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Claim
1. A method of transmitting uplink feedback information by a wireless transmit/receive unit (WTRU) in a CELL_FACH state comprising:
the WTRU in the CELL_FACH state, receiving a first information element (IE) from a network indicating whether acknowledgement or negative acknowledgement (ACK/NACK) is supported on a high speed dedicated physical control channel (HS-DPCCH);
the WTRU in the CELL_FACH state, sending a random access channel (RACH) preamble transmission;
the WTRU in the CELL_FACH state, in response to the RACH preamble transmission, receiving an allocation from the network for a common enhanced dedicated channel (E-DCH) resource for uplink transmission, wherein the allocation comprises an acquisition indication (AI);
on a condition that the WTRU transmits dedicated control channel (DCCH) or dedicated traffic channel (DTCH) data and information in the first IE received from the network indicates that ACK/NACK is supported on HS-DPCCH, the WTRU in the CELL_FACH state:
transmitting an ACK/NACK feedback over the HS-DPCCH using the allocation for the common E-DCH resource, wherein the ACK/NACK is transmitted after a collision resolution;
determining a channel quality indication (CQI) for a corresponding high speed dedicated shared channel (HS-DSCH); and
transmitting the CQI in a physical layer on the HS-DPCCH when the common E-DCH resource includes a second IE, wherein the CQI is transmitted after the collision resolution, and wherein the second IE comprises measurement feedback information.
2. The method of claim 1 wherein the ACK/NACK feedback is transmitted according to a configured serving high speed dedicated shared channel (HS-DSCH) radio link.
3. The method of claim 1, wherein the collision resolution resolves potential collisions of one or more common E-DCH transmissions, and confirms that a user equipment can access the common E-DCH resource.
4. The method of claim 1, wherein receiving the allocation from the network for the common E-DCH resource for uplink transmission comprises:
receiving a system information block (SIB) that includes a list of available E-DCH resources; and
using an index to determine the common E-DCH resource from the list of available E-DCH resources.
5. The method of claim 1, further comprising the WTRU in the CELL_FACH state, receiving from the network at least one of an E-DCH radio network temporary identifier (E-RNTI), a high speed dedicated shared channel (HS-DSCH) radio network temporary identifier (H-RNTI), or a cell radio network temporary identifier (C-RNTI).
6. The method of claim 1, wherein receiving the allocation from the network for the common E-DCH resource for uplink transmission comprises:
receiving a signal from a NodeB that includes an index and a list of available E-DCH resources; and
using the index to determine the common E-DCH resource from the list of available E-DCH resources.
7. The method of claim 1, wherein the AI is an enhanced AI (EAI).
8. The method of claim 1, wherein the second IE comprises one or more of a delta CQI, or a CQI feedback cycle.
9. A method of transmitting uplink feedback information by a wireless transmit/receive unit (WTRU) in a CELL_FACH state comprising:
the WTRU in the CELL_FACH state, receiving an information element (IE) from a network indicating whether acknowledgement or negative acknowledgement (ACK/NACK) is supported on a high speed dedicated physical control channel (HS-DPCCH);
the WTRU in the CELL_FACH state, sending a random access channel (RACH) preamble transmission;
the WTRU in the CELL_FACH state, receiving an allocation from the network for a common enhanced dedicated channel (E-DCH) resource for uplink transmission, wherein the allocation comprises an acquisition indication (AI);
on a condition that the WTRU transmits dedicated control channel (DCCH) or dedicated traffic channel (DTCH) data and information in the IE indicates that ACK/NACK is supported on HS-DPCCH:
the WTRU in the CELL_FACH state, determining a channel quality indication (CQI) for a corresponding high speed dedicated shared channel (HS-DSCH); and
the WTRU in the CELL_FACH state, transmitting the CQI over the HS-DPCCH after a collision resolution when measurement feedback information is provided with the common E-DCH resource.
10. The method of claim 9, wherein the CQI is transmitted according to a configured serving HS-DSCH radio link.
11. The method of claim 9, wherein the collision resolution resolves potential collisions of one or more common E-DCH transmissions, and the collision resolution confirms that a user equipment can access the common E-DCH resource.
12. The method of claim 9, wherein receiving the allocation from the network for the common E-DCH resource for uplink transmission comprises:
the WTRU in the CELL_FACH state receiving a system information block (SIB) that includes a list of available E-DCH resources; and
the WTRU in the CELL_FACH state using an index to determine the common E-DCH resource from the list of available E-DCH resources.
13. The method of claim 9, wherein receiving the allocation from the network for the common E-DCH resource for uplink transmission comprises:
receiving a signal from a NodeB that includes an index and a list of available E-DCH resources; and
using the index to determine the common E-DCH resource from the list of available E-DCH resources.
14. The method of claim 9, further comprising the WTRU in the CELL_FACH state receiving from the network at least one of a E-DCH radio network temporary identifier (E-RNTI), a high speed dedicated shared channel (HS-DSCH) radio network temporary identifier (H-RNTI), and a cell radio network temporary identifier (C-RNTI).
15. The method of claim 9, wherein the AI is an enhanced AI (EAI).
16. The method of claim 9, wherein the second IE comprises one or more of a delta CQI, or a CQI feedback cycle.
17. A wireless transmit/receive unit (WTRU) in a CELL_FACH state for transmitting uplink feedback information comprising:
a processor configured to:
receive, by the WTRU in the CELL_FACH state, a first information element (IE) from a network indicating whether acknowledgement or negative acknowledgement (ACK/NACK) is supported on a high speed dedicated physical control channel (HS-DPCCH);
send, by the WTRU in the CELL_FACH state, a random access channel (RACH) preamble transmission;
receive, by the WTRU in the CELL_FACH state, in response to the RACH preamble transmission, an allocation from the network for a common enhanced dedicated channel (E-DCH) resource for uplink transmission, wherein the allocation comprises an acquisition indication (AI);
on a condition that the WTRU transmits dedicated control channel (DCCH) or dedicated traffic channel (DTCH) data and information in the first IE received from the network indicates that ACK/NACK is supported on HS-DPCCH:
transmit an ACK/NACK feedback using the allocation for the common E-DCH resource over the HS-DPCCH, wherein the ACK/NACK feedback is transmitted after a collision resolution;
determine a channel quality indication (CQI) for a corresponding high speed dedicated shared channel (HS-DSCH); and
transmit the CQI in a physical layer on the HS-DPCCH when the common E-DCH resource includes a second IE, wherein the CQI is transmitted after the collision resolution, and wherein the second IE comprises measurement feedback information.
18. The WTRU of claim 17, the ACK/NACK feedback is transmitted according to a configured serving high speed dedicated shared channel (HS-DSCH) radio link.
19. The WTRU of claim 17, wherein the collision resolution resolves potential collisions of one or more common E-DCH transmissions, and the collision resolution confirms that a user equipment can access the common E-DCH resource.
20. The WTRU of claim 17, wherein the processor is configured to:
receive, by the WTRU in the CELL_FACH state, a system information block (SIB) that includes a list of available E-DCH resources; and
use, by the WTRU in the CELL_FACH state, an index to determine the common E-DCH resource from the list of available E-DCH resources.
21. The WTRU of claim 17, wherein the processor is further configured to receive, by the WTRU in the CELL_FACH state, from the network at least one of an E-DCH radio network temporary identifier (E-RNTI), a high speed dedicated shared channel (HS-DSCH) radio network temporary identifier (H-RNTI), or a cell radio network temporary identifier (C-RNTI).
22. The WTRU of claim 17, wherein the processor further configured to:
receive a signal from a NodeB that includes an index and a list of available E-DCH resources; and
use the index to determine the common E-DCH resource from the list of available E-DCH resources.
23. The WTRU of claim 17, wherein the AI is an enhanced AI (EAI).
24. A wireless transmit/receive unit (WTRU) in a CELL_FACH state comprising:
a processor, the processor configured to:
receive, by the WTRU in the CELL_FACH state, information from a network an information element (IE) indicating whether acknowledgement or negative acknowledgement (ACK/NACK) is supported on a high speed dedicated physical control channel (HS-DPCCH);
send, by the WTRU in the CELL_FACH state, a random access channel (RACH) preamble transmission;
receive, by the WTRU in the CELL_FACH state an allocation from the network for a common enhanced dedicated channel (E-DCH) resource for uplink transmission, wherein the allocation comprises an acquisition indication (AI); and
on a condition that the WTRU in the CELL_FACH state transmits dedicated control channel (DCCH) or dedicated traffic channel (DTCH) data and information in the IE received from the network indicates that ACK/NACK is supported on HS-DPCCH:
determine, by the WTRU in the CELL_FACH state, a channel quality indication (CQI) for a corresponding downlink HS-DSCH channel, and
transmit, by the WTRU in the CELL_FACH state, the CQI over the HS-DPCCH, after a collision resolution when measurement feedback information is provided with the common E-DCH resource.
25. The WTRU of claim 24, wherein the processor is configured to transmit, by the WTRU in the CELL_FACH state, the CQI over a physical channel according to a configured serving high speed downlink shared channel (HS-DSCH) radio link.
26. The WTRU of claim 24, wherein the collision resolution resolves potential collisions of one or more E-DCH transmissions, and confirms that the WTRU can access the common E-DCH resource.
27. The WTRU of claim 24, wherein the processor is further configured to:
receive, by the WTRU in the CELL_FACH state, a system information block (SIB) that includes a list of available E-DCH resources; and
use, by the WTRU in the CELL_FACH state, an index to determine the common E-DCH resource from the list of available E-DCH resources.
28. The WTRU of claim 24, wherein the processor is further configured to:
receive, by the WTRU in the CELL_FACH state, a signal from a NodeB that includes an index and a list of available E-DCH resources; and
use, by the WTRU in the CELL_FACH state, the index to determine the common E-DCH resource from the list of available E-DCH resources.
29. The WTRU of claim 24, wherein the processor is configured to receive, by the WTRU in the CELL_FACH state, an E-DCH radio network temporary identifier (E-RNTI), a high speed downlink shared channel (HS-DSCH) radio network temporary identifier (H-RNTI), or a cell radio network temporary identifier (C-RNTI).
30. The WTRU of claim 24, wherein the AI is an enhanced AI (EAI).
31. The WTRU of claim 24, wherein the second IE comprises one or more of a delta CQI, or a CQI feedback cycle.
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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.
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