Methods and systems for slow associated control channel signaling
AssigneeResearch In Motion Limited
InventorsDavid Hole, Eswar Kalyan Vutukuri
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Abstract
Methods and systems for slow associated control channel signaling are disclosed. An example method for securing communications in a mobile network disclosed herein comprises transmitting a first variant of a message of a first type on a first slow associated control channel (SACCH) before ciphering is started on the first SACCH, and after ciphering is started on the first SACCH, transmitting a second variant of the message of the first type on the first SACCH, and subsequently transmitting the second variant of the message of the first type on the first SACCH, wherein the subsequently transmitted second variant of the message of the first type is the next transmitted message of the first type on the first SACCH.
Claims36
A method for securing communications in a mobile network comprising:
- transmitting a first variant of a message of a first type on a first slow associated control channel (SACCH) before ciphering is started on the first SACCH;
- and
- after ciphering is started on the first SACCH,
- transmitting a second variant of the message of the first type on the first SACCH;
- and
- subsequently transmitting the second variant of the message of the first type on the first SACCH, wherein the subsequently transmitted second variant of the message of the first type is the next transmitted message of the first type on the first SACCH.
A method for securing communications in a mobile network comprising:
- encoding a first variant of a system information (SI) message of a first type, wherein the first variant of the SI message is to be transmitted on a first slow associated control channel (SACCH) before ciphering is started on the first SACCH;
- and
- encoding a second variant of the SI message of the first type, wherein the second variant of the SI message is to be transmitted on the first SACCH after ciphering is started on the first SACCH, and wherein a subsequently transmitted second variant of the SI message of the first type on the first SACCH is the next transmitted message to the second variant of the SI message of the first type on the first SACCH.
A transmitter in a mobile network comprising:
- a processor;
- a memory;
- and
- a communications subsystem,
- wherein the processor, the memory, and the communications subsystem are configured to cooperate to:
- transmit a first variant of a message of a first type on a first slow associated control channel (SACCH) before ciphering is started on the first SACCH;
- and
- after ciphering is started on the first SACCH,
- transmit a second variant of the message of the first type on the first SACCH;
- and
- subsequently transmit the second variant of the message of the first type on the first SACCH, wherein the subsequently transmitted second variant of the message of the first type is the next transmitted message of the first type on the first SACCH.
A tangible machine-readable storage medium encoded with machine-executable instructions, wherein execution of the machine-executable instructions is to cause a machine to at least:
- transmit a first variant of a message of a first type on a first slow associated control channel (SACCH) before ciphering is started on the first SACCH;
- and
- after ciphering is started on the first SACCH,
- transmit a second variant of the message of the first type on the first SACCH;
- and
- subsequently transmit a second variant of the message of the first type on the first SACCH, wherein the subsequently transmitted second variant of the message of the first type on the first SACCH is the next transmitted message of the first type on the first SACCH.
Dependencies are inferred from the claim text.