Method of error detection for wireless transmission

• US 8,631,313 B2
• Filed: 09/06/2011
• Issued: 01/14/2014
• Est. Priority Date: 07/25/2011
• Status: Active Grant

• Current Assignee: Acer, Inc.
• Original Assignee: Acer, Inc.
• Inventors: Cheng, Tsung-Yo
• Primary Examiner(s): Alphonse, Fritz
• Application Number:
  US13/225,575
• Publication Number:
  US 20130031448A1
• Time in Patent Office: 861 Days
• Field of Search: 714/807, 714/776, 714/746, 714/754, 714/755, 714/752, 714/753, 714/758, 714/757
• US Class Current: 714/807
• CPC Class Codes: H04L 1/0061 Error detection codes
• CPC Class Codes: H04L 2209/34 Encoding or coding, e.g. Huffman coding or error correction
• CPC Class Codes: H04L 2209/80 Wireless
• CPC Class Codes: H04L 9/3236 using cryptographic hash functions
• CPC Class Codes: H04W 12/033 of the user plane, e.g. user's traffic
• CPC Class Codes: H04W 12/037 of the control plane, e.g. signalling traffic
• CPC Class Codes: H04W 12/106 Packet or message integrity

Abstract

A transmitter generates an encrypted data by processing a specific data according to a specific transmission mode, generates a verification code according to the specific transmission mode, and provides a protocol data unit according to the encrypted data and the verification code. After transmission, a receiver decodes the protocol data unit and determines whether the decrypted data of the protocol data unit matches the verification code, thereby providing error detection for wireless transmission.

Claims

1. A method of error detection for wireless transmission, comprising:

generating, by a transmitting device, an encrypted data by processing a specific data in a specific transmission mode;

generating, by the transmitting device, a verification code according to the specific transmission mode;

providing, by the transmitting device, a protocol data unit (PDU) according to the encrypted data and the verification code; and

after transmitting the PDU by the transmitting device, decoding the PDU and determining whether a decrypted data of the PDU matches the verification code.

2. The method of claim 1, further comprising:

generating a frame check sequence (FCS) as the verification code using a cyclic redundancy check (CRC).

3. The method of claim 1, wherein the verification code includes information associated with an encrypted data content, a length indicator, or a PAD which is generated according to the specific transmission mode.

4. The method of claim 1, further comprising:

performing an error control procedure if the decrypted data of the PDU does not match the verification code.

5. The method of claim 4, wherein the error control procedure includes modifying the decrypted data or requesting data re-transmission.

6. The method of claim 1, wherein the specific transmission mode is a transparent mode (TM), an unacknowledged mode (UM) or an acknowledged mode (AM) according to a radio link control (RCL) communication protocol.

7. The method of claim 6, further comprising:

decoding the PDU according to a media access control (MAC) communication protocol when the specific transmission mode is the transparent mode.

8. The method of claim 6, further comprising:

decoding the PDU according to the RLC communication protocol when the specific transmission mode is the unacknowledged mode or the acknowledged mode.