System and Method for Securing Wireless Transmissions
AssigneeFuturewei Technologies, Inc.
InventorsTie Liu, Yufei Blankenship
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Abstract
A system and method for securing wireless transmissions is provided. A method for transmitting secure messages by a transmitter includes encoding a message with a secrecy code to produce L output codewords, where L is an integer value greater than one. The secrecy code includes a first security code and a second security code. The method also includes transmitting one of the L output codewords to a communications device when a channel quality of a channel between the transmitter and the communications device satisfies a criterion, and repeating the transmitting for any remaining L−1 output codewords.
Claims24
A method for transmitting secure messages by a transmitter, the method comprising:
- encoding a message with a secrecy code to produce L output codewords, wherein the secrecy code comprises a first security code and a second security code, and L is an integer greater than 1;
- transmitting one of the L output codewords to a communications device in response to determining that a channel quality of a channel between the transmitter and the communications device satisfies a criterion;
- and
- repeating the transmitting for any remaining L−1 output codewords.
A method for receiver operation, the method comprising:
- receiving a secure transmission that includes L vectors of received signals, where L is an integer greater than 1, and wherein each vector of received signals is received in a different transmission;
- and
- decoding a secure message from the L vectors of received signals, wherein the decoding makes use of a secrecy code which comprises a first security code and a second security code.
A transmitter comprising:
- a scheduler coupled to a message input, the scheduler configured to arrange a timing of transmissions of secure messages to a receiver, wherein the scheduling of the timing is based on a channel quality of a channel between the transmitter and the receiver;
- a security unit coupled to the scheduler, the security unit configured to encode a message provided by the message input into L output codewords using a secrecy code, where L is an integer greater than 1, and wherein the secrecy code comprises a first security code and a second security code;
- a security code store coupled to the security unit, the security code store configured to store the secrecy code;
- and
- a transmit circuit coupled to the security unit, the transmit unit configured to prepare an output codeword for transmission.
Dependencies are inferred from the claim text.