Using watermarking to reduce communication overhead

• US 8,458,481 B2
• Filed: 06/23/2011
• Issued: 06/04/2013
• Est. Priority Date: 03/03/2005
• Status: Expired due to Fees

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Zhang, Guodong, Chitrapu, Prabhakar R.
• Primary Examiner(s): Orgad, Edan
• Assistant Examiner(s): SCHMIDT, KARI L
• Application Number:
  US13/167,267
• Publication Number:
  US 20110252241A1
• Time in Patent Office: 712 Days
• Field of Search: 713/176, 713/181, 726/30, 380/202, 380/270
• US Class Current: 713/176
• CPC Class Codes: H04L 63/126 the source of the received data
• CPC Class Codes: H04L 63/162 at the data link layer
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 80/00 Wireless network protocols or protocol adaptations to wireless operation

Abstract

A method for reducing overhead when transmitting and receiving an Internet Protocol (IP) packet by a device begins with receiving of the IP packet by the device. In the packet, an IP address of the packet has been removed and replaced with a watermarking signature based on the IP address. The IP address is obtained using the watermarking signature. The IP address is attached to the packet and the packet is forwarded by the device to a destination over a network using the IP address.

Claims

1. A method for reducing overhead when transmitting and receiving an Internet Protocol (IP) packet by a device, comprising:

receiving the IP packet by the device, wherein an IP address of the packet has been removed and replaced with a watermarking signature based on the IP address;

obtaining the IP address of the packet by using the watermarking signature;

attaching the IP address to the packet; and

forwarding the packet by the device to a destination over a network using the IP address.

2. The method according to claim 1, wherein the watermarking signature is a radio frequency watermarking signature.

3. The method according to claim 1, wherein the watermarking signature is a digital watermarking signature.

4. The method according to claim 1, wherein obtaining the IP address comprises using a watermarking signature to IP address translator.

5. The method according to claim 4, wherein the watermarking signature to IP address translator uses a pre-agreed upon mapping of watermarking signatures and IP addresses.

6. The method according to claim 1, wherein attaching the IP address includes using an IP header device.

7. An intermediate node configured to reduce overhead when transmitting an Internet Protocol (IP) packet, comprising:

a watermarking signature to IP address mapping book;

a watermarking signature to IP address translator, said watermarking signature to IP translator configured to examine a watermarking signature of a received packet and look up the watermarking signature in the mapping book to retrieve the IP address of the received packet; and

an IP header device, said IP header device adding the IP address to the received packet prior to forwarding the received packet.

8. The intermediate node according to claim 7, wherein the watermarking signature is a radio frequency watermarking signature.

9. The intermediate node according to claim 7, wherein the watermarking signature is a digital watermarking signature.

10. The intermediate node according to claim 7, wherein said intermediate node is a radio network controller.

11. The intermediate node according to claim 7, wherein said intermediate node is a Node B.

12. A method for using radio frequency (RF) watermarking to reduce medium access control (MAC) layer signaling in wireless communications, the method comprising:

assigning a unique identifier to each user using a RF watermarking signature assignment device;

assigning a logical channel to each user by a wireless network;

creating, by the wireless network, a unique RF watermarking signature for each user, based on the assigned identifier and the assigned logical channel;

storing the RF watermarking signature in a storage at a transmitter; and

transmitting the RF watermarking signature from the transmitter during connection signaling.