Key updating method, device and system
First Claim
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1. A method of updating a key, the method comprising:
- a small base station monitoring user plane uplink Packet Data Convergence Protocol (PDCP) count value or user plane downlink PDCP count value of each User Equipment (UE) connected with the small base station; and
the small base station transmitting a key update request as a function of the user plane uplink PDCP count value or the user plane downlink PDCP count value to a macro base station so that the macro base station updates a key in response to the key update request or the small base station transmitting information about the user plane uplink PDCP count value or the user plane downlink PDCP count value to the macro base station so that the macro base station updates a key according to the information about the user plane uplink PDCP count value or the user plane downlink PDCP count value.
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Abstract
The present invention relates to communications technologies, and disclosed are a key updating method, device, and system. A local eNB monitors a user plane uplink and downlink PDCP COUNT value of each UE connected thereto, and transmits user plane uplink and downlink PDCP COUNT value information or transmits a key update request based on the PDCP COUNT value to a macro eNB, so that the macro eNB updates a key according to the key update request or the user plane uplink and downlink PDCP COUNT value information, thereby avoiding the problem of repeated use of security parameters, realizing prompt key update, and improving the security performance of the network.
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Citations
20 Claims
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1. A method of updating a key, the method comprising:
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a small base station monitoring user plane uplink Packet Data Convergence Protocol (PDCP) count value or user plane downlink PDCP count value of each User Equipment (UE) connected with the small base station; and the small base station transmitting a key update request as a function of the user plane uplink PDCP count value or the user plane downlink PDCP count value to a macro base station so that the macro base station updates a key in response to the key update request or the small base station transmitting information about the user plane uplink PDCP count value or the user plane downlink PDCP count value to the macro base station so that the macro base station updates a key according to the information about the user plane uplink PDCP count value or the user plane downlink PDCP count value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of updating a key, the method comprising:
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a macro base station receiving a key update request transmitted by a small base station to the macro base station as a function of user plane uplink Packet Data Convergence Protocol (PDCP) count value or the user plane downlink PDCP count value, or information transmitted by the small base station to the macro base station about the user plane uplink PDCP count value or the user plane downlink PDCP count value; and the macro base station updating a key in response to the key update request or according to the information about the user plane uplink PDCP count value or the user plane downlink PDCP count value. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An apparatus for updating a key, the apparatus comprising:
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a receiving unit configured to receive a key update request transmitted by a small base station to a macro base station as a function of user plane uplink Packet Data Convergence Protocol (PDCP) count value or user plane downlink PDCP count value, or information transmitted by the small base station to the macro base station about the user plane uplink PDCP count value or the user plane downlink PDCP count value; and an updating unit configured to update a key in response to the key update request or according to the information about the user plane uplink PDCP count value or the user plane downlink PDCP count value. - View Dependent Claims (17, 18, 19, 20)
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Specification