Method and apparatus for dynamically allocating H-ARQ processes

• US 8,462,717 B2
• Filed: 05/03/2010
• Issued: 06/11/2013
• Est. Priority Date: 06/10/2004
• Status: Active Grant

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Terry, Stephen E.
• Primary Examiner(s): LE, DANH C
• Application Number:
  US12/772,543
• Publication Number:
  US 20100208689A1
• Time in Patent Office: 1,135 Days
• Field of Search: 370/329, 370/337, 370/328, 455/450
• US Class Current: 370/329
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/56 based on priority criteria
• CPC Class Codes: H04W 74/00 Wireless channel access
• CPC Class Codes: H04W 88/12 Access point controller devices

Abstract

A method and apparatus for supporting enhanced uplink (EU) transmissions, implemented in a wireless transmit/receive unit (WTRU), is disclosed. The WTRU provides hybrid automatic repeat request (H-ARQ) processes for supporting transmission over an enhanced dedicated channel (E-DCH), wherein at least one H-ARQ process is reserved for a dedicated channel medium access control channel (MAC-d) flow. The WTRU receives H-ARQ information, wherein the information indicates H-ARQ processes for which transmission of data from the MAC-d flow is allowed. For each transmission time interval (TTI), the WTRU allocates an H-ARQ process for use by the MAC-d flow, from the allowed H-ARQ processes. The WTRU transmits data from the MAC-d flow over the E-DCH using the allocated H-ARQ process.

Claims

1. A method for supporting enhanced uplink (EU) transmissions, implemented in a wireless transmit/receive unit (WTRU), comprising:

providing hybrid automatic repeat request (H-ARQ) processes for supporting transmission over an enhanced dedicated channel (E-DCH), wherein at least one H-ARQ process is reserved for a dedicated channel medium access control channel (MAC-d) flow;

receiving H-ARQ information, wherein the information indicates H-ARQ processes for which transmission of data from the MAC-d flow is allowed;

for a transmission time interval (TTI), allocating an H-ARQ process for use by the MAC-d flow, from the allowed H-ARQ processes; and

transmitting data from the MAC-d flow over the E-DCH using the allocated H-ARQ process.

2. The method of claim 1, wherein the H-ARQ information is received via radio resource control (RRC) signaling.

3. The method of claim 1, wherein the H-ARQ information is received from a radio network controller (RNC).

4. The method of claim 1, wherein H-ARQ information is received for each MAC-d flow configured for the WTRU.

5. The method of claim 1, wherein the H-ARQ information limits the number of H-ARQ processes for use by a MAC-d flow.

6. The method of claim 1, wherein the H-ARQ processes in which transmission of the MAC-d flow is allowed are from the at least one reserved H-ARQ process.

7. The method of claim 1, wherein the at least one reserved H-ARQ process is reserved for more than one MAC-d flow.

8. A wireless transmit/receive unit (WTRU) comprising:

a controller configured to provide hybrid automatic repeat request (H-ARQ) processes for supporting transmission over an enhanced dedicated channel (E-DCH), wherein at least one H-ARQ process is reserved for a dedicated channel medium access control channel (MAC-d) flow;

a receiver configured to receive H-ARQ information, wherein the information indicates H-ARQ processes for which transmission of data from the MAC-d flow is allowed;

for a transmission time interval (TTI), the controller is further configured to allocate an H-ARQ process for use by the MAC-d flow, from the allowed H-ARQ processes; and

a transmitter configured to transmit data from the MAC-d flow over the E-DCH using the allocated H-ARQ process.

9. The WTRU of claim 8, wherein the H-ARQ information is received via radio resource control (RRC) signaling.

10. The WTRU of claim 8, wherein the H-ARQ information is received from a radio network controller (RNC).

11. The WTRU of claim 8, wherein H-ARQ information is received for each MAC-d flow configured for the WTRU.

12. The WTRU of claim 8, wherein the H-ARQ information limits the number of H-ARQ processes for use by a MAC-d flow.

13. The WTRU of claim 8, wherein the H-ARQ processes in which transmission of the MAC-d flow is allowed are from the at least one reserved H-ARQ process.

14. The WTRU of claim 8, wherein the at least one reserved H-ARQ process is reserved for more than one MAC-d flow.