Cell searching method and apparatus in multi-carrier system
AssigneeLG Electronics Inc.
InventorsSo Yeon Kim, Han Gyu Cho, Jae Hoon Chung, Sung Ho Moon, Seung Hee Han, Yeong Hyeon Kwon
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Abstract
Provided are a cell searching method and an apparatus in a multi-carrier system. A terminal acquires a first physical cell identity (PCI) for a first downlink component carrier, and acquires an expanded PCI for a second downlink component carrier. A first downlink reference signal through the first downlink element carrier is transmitted on the basis of the PCI, and a second downlink reference signal through the second downlink component carrier is transmitted on the basis of the expanded PCI.
Claims16
A cell search method in a multiple carrier system, the method comprising:
- obtaining a first physical cell identity (PCI) for a first downlink component carrier;
- and
- obtaining an extended PCI for a second downlink component carrier,
- wherein a first downlink reference signal through the first downlink component carrier is transmitted based on the first PCI, and a second downlink reference signal through the second downlink component carrier is transmitted based on the extended PCI,
- wherein the extended PCI is obtained based on a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) on the second downlink component carrier.
A user equipment for performing a cell search in a multiple carrier system, the user equipment comprising:
- a radio frequency (RF) unit configured to transmit and receive radio signals;
- and
- a processor coupled to the RF unit and configured to perform the cell search,
- wherein the processor is configured to:
- obtain a first physical cell identity (PCI) for a first downlink component carrier;
- and
- obtain an extended PCI for a second downlink component carrier,
- wherein a first downlink reference signal through the first downlink component carrier is transmitted based on the first PCI, and a second downlink reference signal through the second downlink component carrier is transmitted based on the extended PCI, and
- wherein the extended PCI is obtained based on a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) on the second downlink component carrier.
Dependencies are inferred from the claim text.