Legal claims defining the scope of protection, as filed with the USPTO.
1. A connection establishment method for a Machine Type Communication (MTC) User Equipment (UE) in a wireless communication system, comprising: receiving, by a MTC UE, system information from at least one neighbor Base Station (BS) through a physical broadcast channel (PBCH), the system information including information indicating whether or not the at least one BS supports MTC UE; determining, by the MTC UE, at least one candidate BS based on the system information, the at least one candidate BS supporting the MTC UE; determining, by the MTC UE, a suitable BS from the at least one candidate BS, wherein the suitable BS is determined based on the intensity of a downlink signal transmitted from each of the at least one candidate BS; and sending, by the MTC UE, a random access preamble to the suitable BS, wherein the system information includes an MTC subframe pattern index indicative of a subframe in which the random access preamble is transmitted, wherein the random access preamble is an MTC-dedicated preamble transmitted through a physical random access channel (PRACH), wherein the MTC-dedicated preamble is used only for the MTC UE, and wherein the bandwidth of the PRACH is narrower than the bandwidth of the PBCH.
2. The method of claim 1 , wherein: the system information is received in a bandwidth of 20 MHz, and the random access preamble is transmitted in a bandwidth narrower than 20 MHz.
3. The method of claim 1 , wherein the suitable BS is a BS having a strongest intensity of a signal, from among the at least one candidate BS.
4. The method of claim 1 , wherein the suitable BS is a BS first searched for from among the at least one candidate BS in each of which the intensity of the signal is greater than a predetermined threshold.
5. A Machine Type Communication (MTC) User Equipment (UE) in a wireless communication system, comprising: a Radio Frequency (RF) unit configured to transmit and receive radio signals; and a processor connected to the RF unit, the processor is configured to: receive system information from at least one neighbor Base Station (BS) through a physical broadcast channel (PBCH), the system information including information indicating whether or not the at least one BS supports MTC UE; determine at least one candidate BS based on the system information, the at least one candidate BS supporting the MTC UE; determine a suitable BS from the at least one candidate BS, wherein the suitable BS is determined based on the intensity of a downlink signal transmitted from each of the at least one candidate BS; and send a random access preamble to the suitable BS, wherein the system information includes an MTC subframe pattern index indicative of a subframe in which the random access preamble is transmitted, wherein the random access preamble is an MTC-dedicated preamble transmitted through a physical random access channel (PRACH), wherein the MTC-dedicated preamble is used only for the MTC UE, and wherein the bandwidth of the PRACH is narrower than the bandwidth of the PBCH.
6. The UE of claim 5 , wherein: the system information is received in a bandwidth of 20 MHz, and the random access preamble is transmitted in a bandwidth narrower than 20 MHz.
7. The UE of claim 5 , wherein the suitable BS is a BS having a strongest intensity of a signal, from among the at least one candidate BS.
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February 23, 2016
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