Method and apparatus for operating supplementary cells in licensed exempt spectrum

A cell and cell aggregation technology, applied in duplex signal operation, communication between multiple stations, wireless communication, etc., can solve problems such as limited aggregation situations
CN103460740AInactive Publication Date: 2013-12-18INTERDIGITAL PATENT HLDG INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INTERDIGITAL PATENT HLDG INC
Publication Date
2013-12-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method and an apparatus for operating supplementary cells in licensed exempt (LE) spectrum are disclosed. An aggregating cell operating in a frequency division duplex (FDD) licensed spectrum is aggregated with a LE supplementary cell operating in a time sharing mode for uplink (UL) and downlink (DL) operations. The LE supplementary cell may be an FDD supplementary cell dynamically configurable between an UL only mode, a DL only mode, and a shared mode, to match requested UL and DL traffic ratios. The LE supplementary cell may be a time division duplex (TDD) supplementary cell. The TDD supplementary cell may be dynamically configurable between multiple TDD configurations. A coexistence capability for coordinating operations between the LE supplementary cell with other systems operating in the same channel is provided. Coexistence gaps are provided to measure primary / secondary user usage and permit other systems operating in the LE supplementary cell channel to access the channel.
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Description

[0001] Cross References to Related Applications

[0002] This application claims the benefit of U.S. Provisional Application No. 61 / 440,288, filed February 7, 2011, and U.S. Provisional Patent Application No. 61 / 560,571, filed November 16, 2011, the contents of each of which are hereby incorporated by reference . technical field

[0003] This application relates to wireless communications. Background technique

[0004] As the number of mobile users continues to increase, additional licensed spectrum is required to support these mobile users. However, licensed-band spectrum is not immediately available, and obtaining licensed-band spectrum can be very expensive. Therefore, there is an urgent desire to deploy cellular radio access technologies, such as Long Term Evolution (LTE), for example in newly available spectrum, such as Television White Space (TVWS) or unlicensed bands, which may be collectively referred to as licensed exempt (LE) spectrum. ).

[0005] The operation...

Claims

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