发明名称 |
SECONDARY CELL SYNCHRONIZATION FOR CARRIER AGGREGATION |
摘要 |
A carrier aggregation application method is provided of attaining time synchronization to a secondary cell for a wireless communication device usable in a cellular communication network. The method comprises, if a time reference of the secondary cell is unknown to the wireless communication device: setting a preliminary time reference of the secondary cell to equal a time reference of a primary cell of the carrier aggregation application; performing a synchronization signal based detection of the time reference of the secondary cell based on the preliminary time reference and one or more synchronization signals transmitted in the secondary cell; performing preliminary time reference based channel state measurements of the secondary cell based on the preliminary time reference and one or more reference signals transmitted in the secondary cell; setting, based on the synchronization signal based detection, a value of a channel quality indicator to either a nominal value or a value based on the preliminary time reference based channel state measurements; and transmitting a channel state information report comprising the channel quality indicator to the cellular communication network. An arrangement for a wireless communication device usable in a cellular communication network, adapted to attain time synchronization to a secondary cell of a carrier aggregation application is also disclosed. A modem comprising the arrangement and wireless communication device comprising the arrangement are also disclosed. |
申请公布号 |
EP2987370(A4) |
申请公布日期 |
2016.12.14 |
申请号 |
EP20130882379 |
申请日期 |
2013.09.25 |
申请人 |
Telefonaktiebolaget LM Ericsson (publ) |
发明人 |
HAO, Dandan;AXMON, Joakim;LIU, Peng |
分类号 |
H04W56/00 |
主分类号 |
H04W56/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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