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US 9,408,168 B2Granted
Method and apparatus for transmitting synchronization signal in carrier aggregation system
AssigneeLG Electronics Inc.
InventorsDong Youn Seo, Joon Kui Ahn, Min Gyu Kim, Suck Chel Yang, Bong Hoe Kim
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Abstract
Provided is a method and an apparatus for transmitting a synchronization signal in a carrier aggregation system. The method comprises: transmitting via a first serving cell a synchronization signal setting information with regard to a second serving cell; and transmitting the synchronization signal via the second serving cell, wherein the synchronization signal is variably set by means of the synchronization signal setting information.
Claims8
A method of transmitting a synchronization signal in a carrier aggregation system, the method comprising:
- transmitting synchronization signal configuration information for a secondary component carrier (SCC),
- wherein the SCC is an extended component carrier used by a user equipment (UE) in addition to a primary component carrier (PCC), which is a component carrier used by the UE to establish an initial connection with a base station,
- wherein the synchronization signal configuration information of the SCC is transmitted through the PCC, and
- wherein the synchronization signal configuration information includes at least one of synchronization signal bandwidth, a synchronization signal transmission time and a synchronization signal transmission frequency hopping pattern;
- and
- transmitting the synchronization signal of the SCC through the SCC,
- wherein the synchronization signal of the SCC is determined according to the synchronization signal configuration information transmitted through the PCC, and
- wherein a first synchronization signal transmitted in the PCC includes a primary synchronization signal (PSS) having a sequence length of 63 and a secondary synchronization signal (SSS) having a sequence length of 31, and wherein a second synchronization signal transmitted in the SCC consists of only any one of the PSS and the SSS.
5 more elements
A user equipment (UE) comprising:
- a radio frequency (RF) unit for transmitting and receiving a radio signal;
- and
- a processor operatively coupled to the RF unit, wherein the processor is configured to:
- receive synchronization signal configuration information for a secondary component carrier (SCC),
- wherein the SCC is an extended component carrier used by the UE in addition to a primary component carrier (PCC), which is a component carrier used by the UE to establish an initial connection with a base station,
- wherein the synchronization signal configuration information of the SCC is received through the PCC, and
- wherein the synchronization signal configuration information includes at least one of synchronization signal bandwidth, a synchronization signal transmission time and a synchronization signal transmission frequency hopping pattern;
- and
- receive the synchronization signal of the SCC through the SCC,
- wherein the synchronization signal of the SCC is determined according to the synchronization signal configuration information received through the PCC, and
- wherein a first synchronization signal transmitted in the PCC includes a primary synchronization signal (PSS) having a sequence length of 63 and a secondary synchronization signal (SSS) having a sequence length of 31, and wherein a second synchronization signal transmitted in the SCC consists of only any one of the PSS and the SSS.
8 more elements
A method of receiving a synchronization signal in a carrier aggregation system, the method comprising:
- receiving synchronization signal configuration information for a secondary component carrier (SCC),
- wherein the SCC is an extended component carrier used by a user equipment (UE) in addition to a primary component carrier (PCC), which is a component carrier used by the UE to establish an initial connection with a base station,
- wherein the synchronization signal configuration information of the SCC is received through the PCC, and
- wherein the synchronization signal configuration information includes at least one of synchronization signal bandwidth, a synchronization signal transmission time and a synchronization signal transmission frequency hopping pattern;
- and
- receiving the synchronization signal of the SCC through the SCC,
- wherein the synchronization signal of the SCC is determined according to the synchronization signal configuration information received through the PCC, and
- wherein a first synchronization signal transmitted in the PCC includes a primary synchronization signal (PSS) having a sequence length of 63 and a secondary synchronization signal (SSS) having a sequence length of 31, and wherein a second synchronization signal transmitted in the SCC consists of only any one of the PSS and the SSS.
5 more elements
Dependencies are inferred from the claim text.