Initial access method and device in wireless communication system
First Claim
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1. An initial access method for a user equipment (UE) in a wireless communication system comprising:
- acquiring, by the UE, information comprising a cell identification (ID) from a synchronous signal;
receiving, by the UE, a first Physical Broadcast Channel (PBCH) through a first subframe and performing, by the UE, random access based on a Physical Downlink Control Channel (PDCCH), when the cell ID belongs to a first range of cell IDs; and
receiving, by the UE, a second PBCH through a second subframe different from the first subframe and performing, by the UE, random access based on a first Enhanced Physical Downlink Control Channel (EPDCCH), when the cell ID belongs to a second range or a third range of cell IDs;
wherein the PDCCH is decoded based on a cell specific reference signal (CRS),wherein the EPDCCH is decoded based on a demodulation reference signal (DMRS),wherein the PDCCH is allocated in a control region of a third subframe, andwherein the EPDCCH is allocated in a fourth subframe and a starting position of the allocated EPDCCH varies depending upon a range to which the cell ID belongs.
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Abstract
The present invention relates to a terminal'"'"'s initial access method in a wireless communication system, the method including: obtaining information including a cell identification (ID) from a synchronous signal; and receiving any one of a first physical broadcast channel (PBCH) and a second PBCH channel depending on to which of a preset range the cell ID corresponds.
13 Citations
20 Claims
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1. An initial access method for a user equipment (UE) in a wireless communication system comprising:
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acquiring, by the UE, information comprising a cell identification (ID) from a synchronous signal; receiving, by the UE, a first Physical Broadcast Channel (PBCH) through a first subframe and performing, by the UE, random access based on a Physical Downlink Control Channel (PDCCH), when the cell ID belongs to a first range of cell IDs; and receiving, by the UE, a second PBCH through a second subframe different from the first subframe and performing, by the UE, random access based on a first Enhanced Physical Downlink Control Channel (EPDCCH), when the cell ID belongs to a second range or a third range of cell IDs; wherein the PDCCH is decoded based on a cell specific reference signal (CRS), wherein the EPDCCH is decoded based on a demodulation reference signal (DMRS), wherein the PDCCH is allocated in a control region of a third subframe, and wherein the EPDCCH is allocated in a fourth subframe and a starting position of the allocated EPDCCH varies depending upon a range to which the cell ID belongs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16)
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15. A user equipment in a wireless communication system comprising:
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a receive; and a processor that; acquires information comprising a cell identification (ID) from a synchronous signal, controls the receiver to receive a first Physical Broadcast Channel (PBCH) through a first subframe and perform random access based on a Physical Downlink Control Channel (PDCCH) when the first PBCH is received, when the cell ID belongs to a first range of Cell IDs, and controls the receiver to receive a second PBCH through a second subframe different form the first subframe and perform random access based on an Enhanced Physical Downlink Control Channel (EPDCCH) when the second PBCH is received, when the Cell ID belongs to a second range or a third range of Cell IDs, wherein the PDCCH is decoded based on a cell specific reference signal (CRS), wherein the EPDCCH is decoded based on a demodulation reference signal (DMRS), wherein the PDCCH is allocated in a control region of a third subframe, and wherein the EPDCCH is allocated in a fourth subframe and a starting position of the allocated EPDCCH varies depending upon a range to which the cell ID belongs. - View Dependent Claims (17, 18, 19, 20)
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Specification