FAST UPLINK RESPONSE TO DOWNLINK SHARED CHANNEL TRANSMISSION WITHOUT A DEDICATED UPLINK CHANNEL

• US 20140177565A1
• Filed: 02/25/2014
• Published: 06/26/2014
• Est. Priority Date: 01/05/2007
• Status: Active Grant

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Zeira, Eldad M., Reznik, Alexander, Marinier, Paul, Grandhi, Sudheer A., Cave, Christopher, Di Girolamo, Rocco
• Granted Patent: US 9,661,655 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/1867 Arrangements specially adapted for the transmitter end
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04W 52/04 TPC
• CPC Class Codes: H04W 52/50 at the moment of starting communication in a multiple access environment
• CPC Class Codes: H04W 74/004 in the uplink, i.e. towards network
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02

Abstract

A method and apparatus for uplink transmission over a non-contentious shared feedback channel are disclosed, wherein the parameters of the uplink transmission are determined by the parameters of a downlink transmission. A new uplink channel, called a physical shared uplink feedback channel (PSUFCH) is used for uplink transmission such as feedback information in response to a downlink transmission on a fast shared data channel. The content of the feedback information may be general, e.g. an ACK/NACK or a channel quality indicator (CQI). The PSUFCH is transmitted using power ramping that terminates upon reception of a downlink ACK (DLACK) from a Node-B. No ambiguity resolution is required due to the non-contentious and deterministic mapping of the uplink channel resources.

Claims

1. A method for uplink transmission, the method comprising:

receiving a downlink transmission via a high speed downlink shared channel; and

transmitting an uplink transmission via a physical shared uplink feedback channel (PSUFCH) wherein at least one uplink transmission parameter is determined based on at least one downlink parameter used for the downlink transmission.

2. The method of claim 1 further comprising:

implementing a configurable transmission power ramp up so that the uplink transmission is transmitted at least one time wherein transmission power is maintained or ramped up each time the uplink transmission is retransmitted.

3. The method of claim 1 wherein transmission is repeated until a downlink acknowledgement (DLACK) is received but not to exceed a predetermined number of transmissions.

4. The method of claim 3, wherein transmission is repeated until a maximum number of transmission is attained.

5. The method of claim 3, wherein the transmission is repeated until a maximum transmission time is attained.

6. The method of claim 1 wherein the uplink transmission is a channel quality indicator (CQI).

7. The method of claim 6 wherein the CQI is transmitted as feedback in response to the downlink transmission and interpreted as one of a positive acknowledgement (ACK) and a negative acknowledgement (NACK).

8. The method of claim 6 wherein the CQI is transmitted based on a pre-defined rule that is not tied to the downlink transmission.

9. The method of claim 6 wherein the CQI is transmitted in at least two parts.

10. The method of claim 1 wherein the uplink transmission is pre-scheduled transmission.

11. The method of claim 1 wherein the uplink transmission is polled by a Node B.

12. The method of claim 11 wherein the uplink transmission is polled by at least one of transmitting a dummy high speed physical downlink shared channel (HS-PDSCH) packet, using duplicate identities, and using a null modulation and coding scheme (MCS) in a high speed shared control channel (HS-SCCH).

13. The method of claim 1 wherein the uplink transmission carries statistics information of the uplink transmission.

14. The method of claim 1 wherein the uplink transmission is a block positive acknowledgement (ACK)/negative acknowledgement (NACK) associated with a plurality of packets.

15. The method of claim 1 wherein the uplink transmission is an indication of uplink bandwidth request.

16. The method of claim 1 wherein the uplink transmission is a higher layer response.

17. The method of claim 1 wherein the uplink transmission is specific power control feedback for a downlink channel.

18. The method of claim 1 wherein the uplink transmission parameter is derived based on transmission time interval (TTI) and spreading code used for the downlink transmission.

19. The method of claim 1 wherein the uplink transmission parameter is derived based on a wireless transmit/receive unit (WTRU) identity.

20. The method of claim 1 wherein the uplink transmission parameter is derived based on a scrambling code indicated via at least one of a high speed physical downlink shared channel (HS-PDSCH) and a high speed shared control channel (HS-SCCH).