Method and apparatus for dynamically adjusting data transmission parameters and controlling H-ARQ processes

• US 9,584,296 B2
• Filed: 05/30/2014
• Issued: 02/28/2017
• 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): NGUYEN, STEVEN H D
• Application Number:
  US14/291,747
• Publication Number:
  US 20140281781A1
• Time in Patent Office: 1,005 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0007 by modifying the frame length
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1816 with retransmission of the same, encoded, message
• CPC Class Codes: H04L 1/1819 with retransmission of additional or different redundancy
• CPC Class Codes: H04L 1/1835 Buffer management
• CPC Class Codes: H04L 1/1848 Time-out mechanisms
• CPC Class Codes: H04L 1/188 Time-out mechanisms
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 28/14 using intermediate storage
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states

Abstract

A method and wireless transmit/receive unit (WTRU) for uplink data transmission is disclosed. Information indicating an allowed limit for uplink data transmission over an enhanced uplink channel is received. A hybrid automatic repeat request (H-ARQ) process to use for transmission of data over the enhanced uplink channel is identified. Data is selected for transmission over the enhanced uplink channel. A data transmission parameter is selected based on the received information indicating the allowed limit for uplink data transmission. The selected data is transmitted over the enhanced uplink channel using the identified H-ARQ process. An indication of the selected data transmission parameter is transmitted over an associated physical control channel.

Claims

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

a receiver configured to receive information from a wireless radio network, wherein the information indicates allowed transport block sizes to use for enhanced uplink transmission;

a controller configured to identify, for a transmission time interval (TTI), a hybrid automatic repeat request (H-ARQ) process to use for transmission of data over an enhanced uplink channel;

wherein the identified H-ARQ process is a synchronous H-ARQ process;

the controller configured to select data for transmission over the enhanced uplink channel;

the controller configured to select a transport block size, wherein the transport block size is selected based on the received information that indicates allowed transport block sizes;

a transmitter configured to transmit the selected data over the enhanced uplink channel using the identified H-ARQ process; and

the transmitter configured to transmit an indication of the selected transport block size over an associated physical control channel.

2. The WTRU of claim 1, wherein on a condition that the selected data is new data, the controller is configured to initialize a transmission count, wherein the transmission count indicates a number of transmissions associated with the identified H-ARQ process.

3. The WTRU of claim 1, wherein on a condition that the selected data is new data, the data is selected to maximize transmission of higher priority data.

4. The WTRU of claim 1 wherein the transmitter is configured to retransmit the data on a condition that the data transmission is not positively acknowledged and on a condition that a transmission count is less than a maximum number of allowed transmissions.

5. The WTRU of claim 4 wherein the controller is configured to increment the transmission count for each retransmission.

6. A method for uplink data transmission, implemented by a wireless transmit/receive unit (WTRU), comprising:

receiving information from a wireless radio network, wherein the information indicates allowed transport block sizes to use for enhanced uplink transmission;

identifying, for a transmission time interval (TTI), a hybrid automatic repeat request (H-ARQ) process to use for transmission of data over an enhanced uplink channel;

wherein the identified H-ARQ process is a synchronous H-ARQ process;

selecting data for transmission over the enhanced uplink channel;

selecting a transport block size, wherein the transport block size is selected based on the received information indicating allowed transport block sizes;

transmitting the selected data over the enhanced uplink channel using the identified H-ARQ process; and

transmitting an indication of the selected transport block size over an associated physical control channel.

7. The method of claim 6, wherein on a condition that the selected data is new data, initializing a transmission count, wherein the transmission count indicates a number of transmissions associated with the identified H-ARQ process.

8. The method of claim 6, wherein on a condition that the selected data is new data, the data is selected to maximize transmission of higher priority data.

9. The method of claim 6 further comprising retransmitting the data on a condition that the data transmission is not positively acknowledged and on a condition that a transmission count is less than a maximum number of allowed transmissions.

10. The method of claim 9 further comprising incrementing the transmission count for each retransmission.