Abstract
A method and an apparatus is provided for terminating an enhanced random access channel (E-RACH) message in an E-RACH transmission. Triggers for terminating the E-RACH message are provided. The actions upon termination of the E-RACH messages are provided to release enhanced dedicated channel (E-DCH) resources while in cell forward access channel (CELL_FACH) state or transition to cell dedicated channel (CELL_DCH) state.
Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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3G | 13/09/2009 | ISLD-200910-006 | INTERDIGITAL INC |
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Technologies
Product
Use Cases
Services
Claim
1. A method performed by a wireless transmit/receive unit (WTRU) to communicate with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the method comprising:
determining if a E-DCH buffer is empty;
transmitting to the base station scheduling information (SI), wherein the SI includes a total E-DCH buffer status (TEBS) equal to zero when the E-DCH buffer is determined to be empty;
determining if a hybrid automatic repeat request (HARQ) buffer is empty;
and
releasing the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and the HARQ buffer is empty.
2. The method as in claim 1, further comprising starting an inactivity timer when the E-DCH buffer is empty.
3. The method as in claim 2, further comprising triggering the transmission of the SI when the inactivity timer expires.
4. The method as in claim 1, further comprising transmitting using the E-DCH resource when a response is received on an E-DCH acquisition indication channel (E-AICH) to a preamble transmitted by the WTRU.
5. The method as in claim 1, further comprising completing an E-DCH transmission when a cell reselection or a radio link failure occurs.
6. A wireless transmit/receive unit (WTRU) capable of communicating with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the WTRU comprising:
a E-DCH buffer;
a transmitter;
a hybrid automatic repeat request (HARQ) buffer; and
a processor;
wherein the processor:
determines if the E-DCH buffer is empty;
causes the transmitter to transmit to the base station scheduling information (SI), wherein the SI includes a total E-DCH buffer status (TEBS) equal to zero for the E-DCH buffer when the processor has determined that the E-DCH buffer is empty;
determines if the HARQ buffer is empty; and
releases the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and the HARQ buffer is empty.
7. The WTRU as in claim 6, wherein the processor completes an E-DCH transmission when a cell reselection or a radio link failure occurs.
8. The WTRU as in claim 6, wherein the processor starts an inactivity timer when the E-DCH buffer is empty.
9. The WTRU as in claim 8, wherein the transmitter transmits the SI when the inactivity timer expires.
10. The WTRU as in claim 6, wherein the transmitter transmits using the E-DCH resource when a response is received on an E-DCH acquisition indication channel (E-AICH) to a preamble transmitted by the WTRU.
11. A wireless transmit/receive unit (WTRU) capable of communicating with a base station using an enhanced dedicated channel (E-DCH) resource, the WTRU comprising:
a transmitter; and
a processor;
wherein the processor:
determines if an E-DCH buffer is empty;
transmits to the base station scheduling information (SI), wherein the SI includes a total E-DCH buffer status (TEBS) equal to zero for the E-DCH buffer when the processor has determined that the E-DCH buffer is empty;
determines if a last hybrid automatic repeat request (HARQ) data transmission has been made; and
releases the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and the last HARQ data transmission has been made.
12. The WTRU as in claim 11, wherein the processor completes an E-DCH transmission when a cell reselection or a radio link failure occurs.
13. The WTRU as in claim 11, wherein the processor starts an inactivity timer when the E-DCH buffer is empty.
14. The WTRU as in claim 13, wherein the transmitter transmits the SI when the inactivity timer expires.
15. The WTRU as in claim 11, wherein the transmitter transmits using the E-DCH resource when a response is received on an E-DCH acquisition indication channel (E-AICH) to a preamble transmitted by the WTRU.
16. A method performed by a wireless transmit/receive unit (WTRU) to communicate with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the method comprising:
determining that a E-DCH buffer is empty;
transmitting to the base station scheduling information (SI), wherein the SI includes a total E-DCH buffer status (TEBS) equal to zero for the empty E-DCH buffer;
determining if a last hybrid automatic repeat request (HARQ) buffer is empty; and
releasing the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and the last HARQ buffer is empty.
17. The method as in claim 16, further comprising starting an inactivity timer when the E-DCH buffer is empty.
18. The method as in claim 17, further comprising triggering the transmission of the SI when the inactivity timer expires.
19. The method as in claim 16, further comprising transmitting using the E-DCH resource when a response is received on an E-DCH acquisition indication channel (E-AICH) to a preamble transmitted by the WTRU.
20. The method as in claim 16, further comprising completing an E-DCH transmission when a cell reselection or a radio link failure occurs.
21. A method performed by a wireless transmit/receive unit (WTRU) to communicate with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the method comprising:
determining that a E-DCH buffer is empty;
transmitting to the base station scheduling information (SI), wherein the SI includes a total E-DCH buffer status (TEBS) equal to zero for the empty E-DCH buffer; and
releasing the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and a hybrid automatic repeat request (HARQ) buffer is empty.
22. The method as in claim 21, further comprising starting an inactivity timer when the E-DCH buffer is empty.
23. The method as in claim 22, further comprising triggering the transmission of the SI when the inactivity timer expires.
24. The method as in claim 21, further comprising transmitting using the E-DCH resource when a response is received on an E-DCH acquisition indication channel (E-AICH) to a preamble transmitted by the WTRU.
25. The method as in claim 21, wherein an E-DCH transmission is completed when a cell reselection or a radio link failure occurs.
26. A wireless transmit/receive unit (WTRU) capable of communicating with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the WTRU comprising:
a E-DCH buffer;
a transmitter;
a hybrid automatic repeat request (HARQ) buffer; and
a processor;
wherein the processor:
determines if the E-DCH buffer is empty;
causes the transmitter to transmit to the base station scheduling information (SI), wherein the SI includes a total E-DCH buffer status (TEBS) equal to zero for the E-DCH buffer when the processor has determined that the E-DCH buffer is empty; and
releases the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and the HARQ buffer is empty.
27. The WTRU as in claim 26, wherein the processor completes an E-DCH transmission when a cell reselection or a radio link failure occurs.
28. The WTRU as in claim 26, wherein the processor starts an inactivity timer when the E-DCH buffer is empty.
29. The WTRU as in claim 28, wherein the processor causes the transmitter to transmit the SI when the inactivity timer expires.
30. The WTRU as in claim 26, wherein the transmitter transmits using the E-DCH resource when a response is received on an E-DCH acquisition indication channel (E-AICH) to a preamble transmitted by the WTRU.
31. A wireless transmit/receive unit (WTRU) capable of communicating with a base station using an enhanced dedicated channel (E-DCH) resource, the WTRU comprising:
a transmitter; and
a processor;
wherein the processor:
determines if an E-DCH buffer is empty;
causes the transmitter to transmit to the base station scheduling information (SI), wherein the SI includes a total E-DCH buffer status (TEBS) equal to zero for the E-DCH buffer when the processor has determined that the E-DCH buffer is empty; and
releases the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and a last hybrid automatic repeat request (HARQ) data transmission has been made.
32. The WTRU as in claim 31, the processor completes an E-DCH transmission when a cell reselection or a radio link failure occurs.
33. The WTRU as in claim 31, wherein the processor starts an inactivity timer when the E-DCH buffer is empty.
34. The WTRU as in claim 33, wherein the processor causes the transmitter to transmit the SI when the inactivity timer expires.
35. The WTRU as in claim 31, wherein the transmitter transmits using the E-DCH resource when a response is received on an E-DCH acquisition indication channel (E-AICH) to a preamble transmitted by the WTRU.
36. A method performed by a wireless transmit/receive unit (WTRU) to communicate with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the method comprising:
determining that a E-DCH buffer is empty;
transmitting to the base station scheduling information (SI), wherein the SI includes a total E-DCH buffer status (TEBS) equal to zero for the empty E-DCH buffer; and
releasing the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and a last hybrid automatic repeat request (HARQ) buffer is empty.
37. The method as in claim 36, further comprising starting an inactivity timer when the E-DCH buffer is empty.
38. The method as in claim 37, further comprising triggering the transmission of the SI when the inactivity timer expires.
39. The method as in claim 36, further comprising transmitting using the E-DCH resource when a response is received on an E-DCH acquisition indication channel (E-AICH) to a preamble transmitted by the WTRU.
40. The method as in claim 36, further comprising completing an E-DCH transmission when a cell reselection or a radio link failure occurs.
41. A method performed by a wireless transmit/receive unit (WTRU) to communicate with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the method comprising:
transmitting to the base station scheduling information (SI) including a total E-DCH buffer status (TEBS) equal to zero; and
releasing the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and a hybrid automatic repeat request (HARQ) buffer is empty.
42. The method as in claim 41, further comprising starting an inactivity timer when the E-DCH buffer is empty.
43. The method as in claim 42, further comprising triggering the transmission of the SI when the inactivity timer expires.
44. The method as in claim 41, further comprising transmitting using the E-DCH resource when a response is received on an E-DCH acquisition indication channel (E-AICH) to a preamble transmitted by the WTRU.
45. The method as in claim 41, further comprising completing an E-DCH transmission when a cell reselection or a radio link failure occurs.
46. An apparatus capable of communicating with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the apparatus comprising:
an E-DCH buffer;
a transmitter;
a hybrid automatic repeat request (HARQ) buffer; and
a processor,
wherein the processor:
causes the transmitter to transmit to the base station scheduling information (SI) including a total E-DCH buffer status (TEBS) equal to zero; and
releases the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and the HARQ buffer is empty.
47. The apparatus as in claim 46, wherein the processor completes an E-DCH transmission when a cell reselection or a radio link failure occurs.
48. The apparatus as in claim 46, wherein the processor starts an inactivity timer when the E-DCH buffer is empty.
49. The apparatus as in claim 48, wherein the processor causes the transmitter to transmit the SI when the inactivity timer expires.
50. The apparatus as in claim 46, wherein the processor causes the transmitter to transmit an E-DCH transmission to the base station when a response is received on an E-DCH acquisition indication channel (E-AICH) to a preamble transmitted by the WTRU.
51. A wireless transmit/receive unit (WTRU) capable of communicating with a base station using an enhanced dedicated channel (E-DCH) resource, the WTRU comprising:
a transmitter; and
a processor,
wherein the processor:
causes the transmitter to transmit to the base station scheduling information (SI) including a total E-DCH buffer status (TEBS) equal to zero; and
releases the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and a last hybrid automatic repeat request (HARQ) data transmission has been made.
52. The WTRU as in claim 51, wherein the processor completes an E-DCH transmission when a cell reselection or a radio link failure occurs.
53. The WTRU as in claim 51, wherein the processor starts an inactivity timer when the E-DCH buffer is empty.
54. The WTRU as in claim 53, wherein the processor causes the transmitter to transmit the SI when the inactivity timer expires.
55. The WTRU as in claim 51, wherein the transmitter transmits using the E-DCH resource to the base station when a response is received on an E-DCH acquisition indication channel (E-AICH) to a preamble transmitted by the WTRU.
56. A method performed by a wireless transmit/receiver unit (WTRU) to communicate with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the method comprising:
transmitting to the base station scheduling information (SI) including a total E-DCH buffer status (TEBS) equal to zero; and
releasing the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and a last hybrid automatic repeat request (HARQ) buffer is empty.
57. The method as in claim 56, further comprising starting an inactivity timer when the E-DCH buffer is empty.
58. The method as in claim 57, further comprising triggering the transmission of the SI when the inactivity timer expires.
59. The method as in claim 56, further comprising transmitting using the E-DCH resource to the base station when a response is received on an E-DCH acquisition indication channel (E-AICH) to a preamble transmitted by the WTRU.
60. The method as in claim 56, further comprising completing an E-DCH transmission when a cell reselection or a radio link failure occurs.
61. An apparatus comprising:
a receiver;
a transmitter; and
a processor,
wherein the processor:
allocates an enhanced uplink (EU) resource and an associated hybrid automatic repeat request (HARQ) process for a wireless transmit receive unit (WTRU) based on a request received from the WTRU by the receiver;
causes the transmitter-to transmit to the WTRU information regarding the allocated EU resource, and
releases the allocated EU resource when a scheduling information (SI) is received from the WTRU by the receiver with an E-DCH buffer status (TEBS) equal to zero and a HARQ transmission associated with the HARQ process is completed.
62. The apparatus of claim 61, wherein the processor causes the transmitter to transmit the allocated EU resources information to the WTRU via an enhanced acquisition indication channel.
63. The apparatus of claim 61, wherein the receiver receives a random access channel preamble from the WTRU and the transmitter transmits a response to the random access channel preamble prior to the transmission of the allocated EU resources information.
64. The apparatus of claim 63, wherein the receiver receives EU data from the WTRU after the transmission of the allocated EU resources information.
65. The apparatus of claim 64, wherein the HARQ process generates acknowledgments (ACKs) and negative acknowledgements (NACKs) in response to the received EU data, and the transmitter transmits the HARQ ACKs and NACKs to the WTRU.
66. The apparatus of claim 61, wherein the HARQ process is completed when a HARQ buffer controlled by the HARQ process is empty.
67. The apparatus of claim 61, wherein the apparatus is a base station.
68. A method performed by a base station to communicate with a wireless transmit/receive unit (WTRU), the method comprising:
receiving a request from the WTRU;
allocating an enhanced uplink (EU) resource and an associated hybrid automatic repeat request (HARQ) process for the WTRU based on the received request;
transmitting information regarding the allocated EU resources to the WTRU;
and
releasing the allocated EU resource when a scheduling information (SI) is received from the WTRU with an E-DCH buffer status (TEBS) equal to zero and a HARQ transmission associated with the HARQ process is completed.
69. The method of claim 68, further comprising transmitting the allocated EU resources information to the WTRU via an enhanced acquisition indication channel.
70. The method of claim 68, further comprising:
receiving a random access channel preamble from the WTRU; and
transmitting a response to the random access channel preamble prior to the transmission of the allocated EU resources information.
71. The method of claim 70, further comprising:
receiving EU data from the WTRU after the transmission of the allocated EU resources information.
72. The method of claim 71, further comprising:
generating, by the HARQ process, acknowledgments (ACKs) and negative acknowledgements (NACKs) in response to the received EU data; and
transmitting the HARQ ACKs and NACKs to the WTRU.
73. The method of claim 68, wherein the HARQ process is completed when a HARQ buffer controlled by the HARQ process is empty.
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