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US 10,103,805 B2Granted
Method and apparatus for requesting transmission of synchronization signals in wireless communication system
AssigneeLG Electronics Inc.
InventorYunjung Yi
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Abstract
A method and apparatus for requesting a synchronization signal in a wireless communication system is provided. A machine type communication user equipment (MTC UE) transmits a random access preamble for requesting the synchronization signal to a network, receives the synchronization signal from the network, and performs synchronization by using the received synchronization signal.
Claims12
A method for performing synchronization in a wireless communication system, the method performed by a machine type communication user equipment (MTC UE) and comprising:
- determining whether the MTC UE wakes up;
- transmitting, to a network, a random access preamble requesting synchronization information when determining that the MTC UE wakes up;
- receiving, from the network, the synchronization information together with system information in response to the random access preamble;
- and
- performing the synchronization by using the received synchronization information and the system information,
- wherein when the MTC UE is out-of-connection with the network for more than a specific threshold, the system information includes total system information, and
- when the MTC UE is not out-of-connection with the network for more than the specific threshold, the system information includes only changes to the total system information.
4 more elements
A machine type communication user equipment (MTC UE) comprising:
- a memory;
- a transceiver;
- and
- a processor coupled to the memory and the transceiver, said processor configured to:
- determine whether the MTC UE wakes up;
- control the transceiver to transmit, to a network, a random access preamble requesting synchronization information when determining that the MTC UE wakes up;
- control the transceiver to receive, from the network, the synchronization information together with system information in response to the random access preamble;
- and
- performs synchronization by using the received synchronization information and the system information,
- wherein when the MTC UE is out-of-connection with the network for more than a specific threshold, the system information includes total system information, and
- when the MTC UE is not out-of-connection with the network for more than the specific threshold, the system information includes only changes to the total system information.
8 more elements
Dependencies are inferred from the claim text.