METHOD AND APPARATUS FOR ENCODING AND DECODING A HIGH SPEED SHARED CONTROL CHANNEL

• US 20150100863A1
• Filed: 12/15/2014
• Published: 04/09/2015
• Est. Priority Date: 10/30/2006
• Status: Abandoned Application

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Pietraski, Philip J., Yang, Yongwen E.
• Application Number:
  US14/570,228
• Publication Number:
  US 20150100863A1
• Time in Patent Office: Days
• US Class Current: 714/807
• CPC Class Codes: G06F 11/1004 to protect a block of data words, e.g. CRC or checksum G06F11/1076 takes precedence; security arrangements for protecting computers or computer systems against unauthorized activity G06F21/00
• CPC Class Codes: H03M 13/09 Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0045 Arrangements at the receiver end
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/0061 Error detection codes
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04L 1/0083 Formatting with frames or packets; Protocol or part of protocol for error control
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]

Abstract

A method and apparatus for encoding and decoding a data block are disclosed. The data block may be for a physical channel. Further, the data block may be for a shared channel. For data block encoding, a Node-B may calculate cyclic redundancy check (CRC) bits for the data block. The data block may be used to calculate the CRC bits. The Node-B may mask the CRC bits with a wireless transmit/receive unit (WTRU) identity (ID). Further, the Node-B may attached the masked CRC bits to the data block. Using a transmitter, the Node-B may transmit the data block over a physical channel. Further, the Node-B may transmit the data block over a shared channel. A WTRU may receive the data block, including the masked CRC bits. Using the WTRU ID, the WTRU may de-mask the CRC bits. The WTRU may perform a CRC check using the de-masked CRC bits.

Claims

1. A Node-B comprising:

a processor configured to calculate cyclic redundancy check (CRC) bits for a data block;

the processor configured to mask the CRC bits with wireless transmit/receive unit (WTRU) identity (ID) bits;

the processor configured to attach the masked CRC bits to the data block; and

a transmitter configured to transmit the data block.

2. The Node-B of claim 1 wherein the data block is used to calculate the CRC bits.

3. The Node-B of claim 1 wherein the transmitter is configured to transmit the data block over a physical channel.

4. The Node-B of claim 1 wherein the transmitter is configured to transmit the data block over a shared channel.

5. A method implemented in a Node-B comprising:

calculating cyclic redundancy check (CRC) bits for a data block;

masking the CRC bits with wireless transmit/receive unit (WTRU) identity (ID) bits;

attaching the masked CRC bits to the data block; and

transmitting the data block.

6. The method of claim 5 wherein the data block is used to calculate the CRC bits.

7. The method of claim 5 wherein the data block is transmitted over a physical channel.

8. The method of claim 5 wherein the data block is transmitted over a shared channel.

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

a receiver configured to receive a data block, wherein the data block includes masked cyclic redundancy check (CRC) bits;

a processor configured to de-mask the CRC bits in the received data block, wherein identity (ID) bits of the WTRU are used to de-mask the CRC bits; and

the processor further configured to perform a CRC check on the received data block using the de-masked CRC bits.

10. The WTRU of claim 9 wherein the CRC bits have been calculated using the data block.

11. The WTRU of claim 9 wherein the receiver is configured to receive the data block over a physical channel.

12. The WTRU of claim 9 wherein the receiver is configured to receive the data block over a shared channel.

13. A method implemented in a wireless transmit/receive unit (WTRU), comprising:

receiving a data block, wherein the data block includes masked cyclic redundancy check (CRC) bits;

de-masking the CRC bits in the received data block, wherein identity (ID) bits of the WTRU are used to de-mask the CRC bits; and

performing a CRC check on the received data block using the de-masked CRC bits.

14. The method of claim 13 wherein the CRC bits have been calculated using the data block.

15. The method of claim 13 wherein the data block is received over a physical channel.

16. The method of claim 13 wherein the data block is received over a shared channel.