Method and system for securing wireless communications
First Claim
1. In a wireless communication system including a wireless transmit/receive unit (WTRU) and a serving network (SN), wherein the SN comprises at least a Node B and a radio network controller (RNC), a method for providing secure wireless communications, the method comprising:
- the WTRU and the Node B performing joint randomness not shared by others (JRNSO) measurements to generate JRNSO bits based on a channel impulse response (CIR) estimate between the WTRU and the Node B;
the WTRU and the Node B performing a reconciliation procedure to generate common JRNSO bits;
the Node B sending the common JRNSO bits to the RNC;
the WTRU and the SN generating a session key used for security;
the WTRU and the SN securing said session key using the common JRNSO bits when a length of said common JRNSO bits are compared to a length of said session key and are greater than or equal to said length of said session key;
the SN sending a handover command to the WTRU and a second Node B to initiate a handover to the second Node B, the SN informing a start of JRNSO measurements between the WTRU and the second Node B;
the WTRU and the second Node B performing JRNSO measurement to generate a first set of JRNSO bits based on a channel estimate between the WTRU and the second Node B;
the WTRU and the second Node B performing a reconciliation procedure to generate a second set of common JRNSO bits;
the second Node B sending the second set of common JRNSO bits to the SN; and
the WTRU and the SN securing the session key used for security using the second set of common JRNSO bits.
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Accused Products
Abstract
A wireless transmit/receive unit (WTRU) and a Node B, respectively, perform joint randomness not shared by others (JRNSO) measurement to generate JRNSO bits based on a channel estimate between the WTRU and the Node B. The WTRU and the Node B then perform a reconciliation procedure to generate a common JRNSO bits. The Node B sends the common JRNSO bits to a serving network. The WTRU and the SN secure a session key (such as an integrity key, a cipher key and an anonymity key), using the common JRNSO bits. The JRNSO measurements are performed on an on-going basis, and the session key is updated using a new set of common JRNSO bits. The JRNSO bits may be expanded by using a pseudorandom number generator (PNG) or a windowing technique. A handover may be intentionally induced to increase the JRNSO bits generation rate.
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Citations
30 Claims
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1. In a wireless communication system including a wireless transmit/receive unit (WTRU) and a serving network (SN), wherein the SN comprises at least a Node B and a radio network controller (RNC), a method for providing secure wireless communications, the method comprising:
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the WTRU and the Node B performing joint randomness not shared by others (JRNSO) measurements to generate JRNSO bits based on a channel impulse response (CIR) estimate between the WTRU and the Node B; the WTRU and the Node B performing a reconciliation procedure to generate common JRNSO bits; the Node B sending the common JRNSO bits to the RNC; the WTRU and the SN generating a session key used for security; the WTRU and the SN securing said session key using the common JRNSO bits when a length of said common JRNSO bits are compared to a length of said session key and are greater than or equal to said length of said session key; the SN sending a handover command to the WTRU and a second Node B to initiate a handover to the second Node B, the SN informing a start of JRNSO measurements between the WTRU and the second Node B; the WTRU and the second Node B performing JRNSO measurement to generate a first set of JRNSO bits based on a channel estimate between the WTRU and the second Node B; the WTRU and the second Node B performing a reconciliation procedure to generate a second set of common JRNSO bits; the second Node B sending the second set of common JRNSO bits to the SN; and the WTRU and the SN securing the session key used for security using the second set of common JRNSO bits.
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2. In a wireless communication system including a wireless transmit/receive unit (WTRU) and a serving network (SN), wherein the SN comprises at least a Node B and a radio network controller (RNC), a method for providing secure wireless communications, the method comprising:
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the WTRU and the Node B performing joint randomness not shared by others (JRNSO) measurements to generate JRNSO bits based on a channel impulse response (CIR) estimate between the WTRU and the Node B; the WTRU and the Node B performing a reconciliation procedure to generate common JRNSO bits; the Node B sending the common JRNSO bits to the RNC; the WTRU and the SN securing a session key used for security using the common JRNSO bits; and the SN initiating a handover to at least one alternative Node B to generate JRNSO bits between the WTRU and said at least one alternative Node B to increase a rate of JRNSO bits generation. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A wireless communication system configured to secure wireless communications, the system comprising:
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a wireless transmit/receive unit (WTRU) configured to perform joint randomness not shared by others (JRNSO) measurement to generate JRNSO bits based on a channel estimate between the WTRU and a Node B and perform a reconciliation procedure to generate common JRNSO bits; and a serving network (SN) including at least the Node B and a radio network controller (RNC), the Node B configured to perform JRNSO measurement to generate JRNSO bits based on a channel estimate between the WTRU and the Node B and perform a reconciliation procedure to generate the common JRNSO bits, the SN and said WTRU configured to generate a session key used for security and secure said session key using the common JRNSO bits when a length of the common JRNSO bits are compared to a length of said session key and are greater than or equal to said length of said session key, wherein the SN is configured to send a handover command to the WTRU and a second Node B to initiate a handover to the second Node B, and inform a start of JRNSO measurements between the WTRU and the second Node B and the WTRU and the second Node B are configured to perform JRNSO measurement to generate JRNSO bits based on a channel estimate between the WTRU and the second Node B, and perform a reconciliation procedure to generate second common JRNSO bits so that at least one of a session key and a parameter used for security is secured using the second common JRNSO bits.
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17. A wireless communication system configured to secure wireless communications, the system comprising:
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a wireless transmit/receive unit (WTRU) configured to perform joint randomness not shared by others (JRNSO) measurement to generate JRNSO bits based on a channel estimate between the WTRU and a Node B and perform a reconciliation procedure to generate common JRNSO bits; and a serving network (SN) including the Node B, the Node B configured to perform JRNSO measurement to generate JRNSO bits based on a channel estimate between the WTRU and the Node B and perform a reconciliation procedure to generate the common JRNSO bits, the SN configured to secure a session key used for security using the common JRNSO bits, wherein the SN is configured to initiate a handover to at least one destination Node B to generate JRNSO bits between the WTRU and said at least one destination Node B to increase a rate of JRNSO bits generation. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification