Mechanisms for initial access to a radio access network
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsBengt Lindoff, Magnus Åström
Life of this patent
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Abstract
There is provided mechanisms for initial access to a radio access network. The method is performed by a wireless device. The wireless device is configured for accessing the radio access network using at least a first cellular RAT and a second cellular RAT. The method comprises obtaining system information using a first carrier frequency and the first RAT. The system information comprises inter-frequency cell information of the second RAT. The method comprises synchronizing with the second RAT using a second carrier frequency based on the obtained system information in order to establish initial access to the radio access network. The second carrier frequency is higher than the first carrier frequency.
Claims20
A method for initial access to a radio access network (RAN), the method being performed by a wireless device configured for accessing the RAN using at least a first cellular radio access technology (RAT) and a second cellular RAT, the method comprising:
- obtaining system information broadcast by the RAN on a first carrier frequency using the first cellular RAT;
- based on the obtained system information, determining whether the system information is associated with a home public land mobile network (HPLMN) for the wireless device;
- and
- based on determining that the system information is associated with the HPLMN, synchronizing with the second cellular RAT using a second carrier frequency based on inter-frequency cell information of the second cellular RAT included in the obtained system information in order to establish initial access to the radio access network,
- wherein the second carrier frequency is higher than the first carrier frequency.
A wireless device configured for accessing a radio access network (RAN) using at least a first cellular radio access technology (RAT) and a second cellular RAT, the wireless device comprising:
- processing circuitry;
- and
- a storage medium storing computer-executable instructions that, when executed by the processing circuitry, configure the wireless device to:
- obtain system information broadcast by the RAN on a first carrier frequency using the first cellular RAT;
- based on the obtained system information, determine whether the system information is associated with a home public land mobile network (HPLMN) for the wireless device;
- and
- based on determining that the system information is associated with the HPLMN, synchronize with the second cellular RAT using a second carrier frequency based on inter-frequency cell information of the second cellular RAT included in the obtained system information, in order to establish initial access to the radio access network,
- wherein the second carrier frequency is higher than the first carrier frequency.
Dependencies are inferred from the claim text.