Method and apparatus for transmitting secure cell broadcast messages in a cellular communication network
First Claim
1. A method in a message control node for transmitting a cell broadcast message in a mobile communication network, the method comprising:
- receiving an initiation request identifying a first message payload segment to be transmitted;
determining an authentication group of mobile terminals for which the first message payload segment is intended;
determining a first encryption key associated with the determined authentication group of mobile terminals;
encrypting the first message payload segment using the first encryption key;
aggregating a message payload comprising the encrypted first message payload segment and at least a second encrypted message payload segment, each message payload segment encrypted so that the determined authentication group of mobile terminals can decrypt the encrypted first message payload segment and a separate authentication group of mobile terminals can decrypt the second encrypted message payload segment, wherein the aggregated message payload comprises a first indicator allowing an end of the encrypted first message payload segment to be identified and/or a second indicator allowing an end of the second encrypted message payload segment to be identified by a receiving mobile terminal; and
transmitting the cell broadcast message comprising the aggregated message payload for message broadcast within at least a part of the communication network, wherein the cell broadcast message includes multiple pages and each page further includes multiple paragraphs with parameters that specify length of each paragraph and wherein the encrypted first message payload segment and/or the second encrypted message payload segment is a paragraph of a page of the cell broadcast message.
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Accused Products
Abstract
A method and apparatus is provided for transmitting a cell broadcast message in a mobile communication network comprising in a message control node receiving a initiation request identifying a first message payload segment to be transmitted, determining an authentication group for which the first message payload segment is intended and determining a first encryption key associated with the determined authentication group. The first message payload segment is encrypted using the first encryption key. A message payload is aggregated comprising the encrypted first message payload segment and at least a second message payload segment. The cell broadcast message comprising the aggregated message payload for message broadcast is transmitted within at least a part of the communication network. A method and apparatus is also provided for decrypting a cell broadcast message at a mobile terminal.
12 Citations
12 Claims
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1. A method in a message control node for transmitting a cell broadcast message in a mobile communication network, the method comprising:
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receiving an initiation request identifying a first message payload segment to be transmitted; determining an authentication group of mobile terminals for which the first message payload segment is intended; determining a first encryption key associated with the determined authentication group of mobile terminals; encrypting the first message payload segment using the first encryption key; aggregating a message payload comprising the encrypted first message payload segment and at least a second encrypted message payload segment, each message payload segment encrypted so that the determined authentication group of mobile terminals can decrypt the encrypted first message payload segment and a separate authentication group of mobile terminals can decrypt the second encrypted message payload segment, wherein the aggregated message payload comprises a first indicator allowing an end of the encrypted first message payload segment to be identified and/or a second indicator allowing an end of the second encrypted message payload segment to be identified by a receiving mobile terminal; and transmitting the cell broadcast message comprising the aggregated message payload for message broadcast within at least a part of the communication network, wherein the cell broadcast message includes multiple pages and each page further includes multiple paragraphs with parameters that specify length of each paragraph and wherein the encrypted first message payload segment and/or the second encrypted message payload segment is a paragraph of a page of the cell broadcast message. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A message control node for transmitting a cell broadcast message in a mobile communication network, the message control node comprising:
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a memory; a network interface; and a processor operatively coupled to the memory and the network interface, wherein the processor is configured to; receive an initiation request from the memory identifying a first message payload segment to be transmitted; determine an authentication group of mobile terminals for which the first message payload segment is intended and for determining a first encryption key associated with the determined authentication group of mobile terminals; encrypt the first message payload segment using the first encryption key; aggregate a message payload comprising the encrypted first message payload segment and at least a second encrypted message payload segment, each message payload segment encrypted so that the determined authentication group of mobile terminals can decrypt the encrypted first message payload segment and a second authentication group of mobile terminals can decrypt the second encrypted message payload segment, wherein the processor is configured to include in the aggregated message payload, a first indicator allowing an end of the encrypted first message payload segment to be identified and/or a second indicator allowing an end of the second encrypted message payload segment to be identified by a receiving mobile terminal; and instruct the network interface to transmit the cell broadcast message comprising the aggregated message payload for message broadcast within at least a part of the communication network, wherein the cell broadcast message includes multiple pages and each page further includes multiple paragraphs with parameters that specify length of each paragraph and wherein the encrypted first message payload segment and/or the second encrypted message payload segment is a paragraph of a page of the cell broadcast message. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification