DYNAMIC PARAMETER ADJUSTMENT FOR LTE COEXISTENCE
First Claim
1. A method for using a shared channel in a dynamic shared spectrum, the method comprising:
- determining a coexistence pattern, the coexistence pattern comprising a coexistence gap that enables a first radio access technology (RAT) and a second RAT to operate in a channel of a dynamic shared spectrum; and
sending a signal in the channel via the first RAT based on the coexistence pattern.
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Accused Products
Abstract
Coexistence gaps may permit one radio access technology (RAT) to coexists with another RAT by providing period in which one RAT may be silent and another may transmit. Methods may account for the RAT traffic and for the presence of other secondary users in a channel. Methods may be provided to dynamically change the parameters of a coexistence gap pattern, such as the duty cycle, to adapt to both the RAT traffic and the presence of other secondary users. Methods may include PHY methods, such as synchronization signal (PSS/SSS) based, MIB based, and PDCCH based, MAC CE based methods, and RRC Methods. Measurements may be provided to detect the presence of secondary users, and may include reporting of interference measured during ON and OFF durations, and detection of secondary users based on interference and RSRP/RSRQ measurements.
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Citations
54 Claims
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1. A method for using a shared channel in a dynamic shared spectrum, the method comprising:
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determining a coexistence pattern, the coexistence pattern comprising a coexistence gap that enables a first radio access technology (RAT) and a second RAT to operate in a channel of a dynamic shared spectrum; and sending a signal in the channel via the first RAT based on the coexistence pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for using a shared channel in a dynamic shared spectrum, the method comprising:
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determining whether a channel is available during a coexistence gap that enables a first radio access technology (RAT) and a second RAT to operate in a channel of a dynamic shared spectrum; determining a packet duration to minimize interference to the first RAT; and sending a packet based on the packet duration in the channel using the second RAT when the channel is available. - View Dependent Claims (14, 15)
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16. A method for adjusting a coexistence pattern, the method comprising:
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determining a traffic load in a channel of a dynamic shared spectrum band for a first radio access technology (RAT); determining an operational mode indicating whether the second RAT is operating on the channel; determining a coexistence gap pattern that enables the first RAT and a second RAT to operate in the channel of a dynamic shared spectrum band; and setting a duty cycle for the coexistence gap pattern using at least one of the traffic load, the operational mode, or the coexistence gap. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A method for using a shared channel in a dynamic shared spectrum, the method comprising:
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determining a coexistence pattern, the coexistence pattern comprising a coexistence gap that enables a first radio access technology (RAT) and a second RAT to operate in a channel of a dynamic shared spectrum band; sending the coexistence pattern to a wireless transmit/receive unit (WTRU); and sending a signal in the channel via the first RAT during a time period outside of the coexistence gap. - View Dependent Claims (23, 24, 25, 26)
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27. A method for using a shared channel in a dynamic shared spectrum, the method comprising:
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selecting a time-division duplex uplink/downlink (TDD UL/DL) configuration; determining one or more multicast/broadcast single frequency network (MBSFN) subframes from downlink (DL) subframes of the TDD UL/DL configuration; determining one or more non-scheduled uplink (UL) subframes from the uplink (UL) subframes of the TDD UL/DL configuration; and generating a coexistence gap using the one or more non-scheduled UL subframes and the MBSFN subframes that enables a first radio access technology (RAT) and a second (RAT) to coexist in a channel of a dynamic shared spectrum. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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35. A wireless transmit/receive unit (WTRU) for sharing a channel in a dynamic shared spectrum band, the WTRU comprising:
a processor, the processor being configured to; receive a coexistence pattern, the coexistence pattern comprising a coexistence gap that enables a first radio access technology (RAT) a second RAT to operate in a channel of a dynamic shared spectrum band; and send a signal in the channel via the first RAT based on the coexistence pattern. - View Dependent Claims (28, 36, 37, 38, 39, 40)
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41. An access point for using a shared channel in a dynamic shared spectrum, the wireless access point comprising:
a processor, the processor being configured to; determine whether a channel is available during a coexistence gap that enables a first radio access technology (RAT) and a second RAT to operate in a channel of a dynamic shared spectrum; determine a packet duration to minimize interference to the first RAT; and send a packet based on the packet duration in the channel using the second RAT when the channel is available. - View Dependent Claims (42, 43)
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44. An enhanced node-B (eNode-B) for adjusting a coexistence pattern, the eNode-B comprising:
a processor, the processor being configured to; determine traffic load in a channel of a dynamic shared spectrum band for a first radio access technology (RAT); determine an operational mode indicating whether the second RAT is operating on the channel; determine a coexistence gap pattern that enables the first RAT and a second RAT to operate in the channel of a dynamic shared spectrum band; and set a duty cycle for the coexistence gap pattern using at least one of the traffic load, the operational mode, or the coexistence gap. - View Dependent Claims (45, 46, 47, 48, 49)
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50. A wireless transmit/receive unit (WTRU) for using a shared channel in a dynamic shared, the WTRU comprising:
a processor, the processor being configured to; receive a coexistence pattern, the coexistence pattern comprising a coexistence gap that enables a first radio access technology (RAT) and a second RAT to operate in a channel of a dynamic shared spectrum band; and send a signal in the channel via the first RAT during a time period outside of the coexistence gap. - View Dependent Claims (51, 52)
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53. A wireless transmit/receive unit (WTRU) for using a shared channel in a dynamic shared spectrum, the WTRU comprising:
a processor, the processor being configured to; receive a duty cycle; select a time-division duplex uplink/downlink (TDD UL/DL) configuration using the duty cycle; determine one or more multicast/broadcast single frequency network (MBSFN) subframes from downlink (DL) subframes of the TDD UL/DL configuration; determine one or more non-scheduled uplink (UL) subframes from the uplink (UL) subframes of the TDD UL/DL configuration; and determine a coexistence gap using the one or more non-scheduled UL subframes and the MBSFN subframes that enables a first radio access technology (RAT) and a second (RAT) to coexist in a channel of a dynamic shared spectrum. - View Dependent Claims (54)
Specification