Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L43/00—Arrangements for monitoring or testing data switching networks
  • H04L43/16—Threshold monitoring
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L1/00—Arrangements for detecting or preventing errors in the information received
  • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
  • H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B17/00—Monitoring; Testing
  • H04B17/30—Monitoring; Testing of propagation channels
  • H04B17/309—Measuring or estimating channel quality parameters
  • H04B17/318—Received signal strength
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
  • H04W16/14—Spectrum sharing arrangements between different networks
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W24/00—Supervisory, monitoring or testing arrangements
  • H04W24/08—Testing, supervising or monitoring using real traffic
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W74/00—Wireless channel access
  • H04W74/08—Non-scheduled access, e.g. ALOHA
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W84/00—Network topologies
  • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
  • H04W84/10—Small scale networks; Flat hierarchical networks
  • H04W84/12—WLAN [Wireless Local Area Networks]
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
  • H04W88/02—Terminal devices
  • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
  • H04W88/08—Access point devices
  • H04W88/10—Access point devices adapted for operation in multiple networks, e.g. multi-mode access points

Definitions

• LTE modem 130 can include hardware such as circuitry, one or more processors, memory, and/or other means for processing LTE signals.
• LTE modem 130 can be configured to process signals for LTE in unlicensed spectrum.
• LTE modem 130 can include a receiver 132, a transmitter 134, and a filter 136.
• LTE modem 130 can be configured to perform interference detection operations, such as, for example, energy detection operations to determine the interference level of a channel.
• Wi-Fi transmitter 144 can be configured to generate a modulated Wi-Fi signal based on digital input, such as a MAC transport block.
• Wi-Fi transmitter 144 can receive digital input from a protocol stack of the wireless device (e.g., a protocol stack included in access terminal 102 or access point 106).
• transmitter 144 can receive digital input in the form of a demodulated received signal.
• Transmitter 144 can receive the demodulated received signal from receiver 142.
• Transmitter 144 can remodulate the demodulated received signal to generate a new Wi-Fi signal.
• the new Wi-Fi signal can be used, for example, to configure a cancellation filter for improving a second RAT signal.
• Wi-Fi transmitter 144 can be configured to send transmissions to other network entities operating based on or according to the first RAT.
• the transmissions can be messages that include signatures (e.g., preambles) for the first RAT.
• Wi-Fi modem 140 can receive an indication of LTE modem 130 planning to send an LTE transmission message, e.g., in the frequency or channel that may be shared between the modems.
• Wi-Fi modem 140 can configure transmitter 144 to send a message (e.g., a channel usage or channel reservation message) to other devices operating based on or according to the first RAT preceding the LTE transmission in order to clear the channel for the LTE transmission message.
• Filter 146 can include one or more digital filters configured to improve a signal quality of an incoming Wi-Fi signal.
• filter 146 may be a space-time filter configured to reduce interference from a second RAT signal.
• Space-time filter 146 can be configured based on a channel estimate provided by a second RAT receiver (here, LTE receiver 132).
• Space-time filter 146 can be configured as an LTE nuller to null out one or more LTE streams.
• filter 146 can be a cancellation filter.
• a cancellation filter can be used to cancel a second RAT signal from the Wi-Fi signal.
• the cancellation filter can be configured based on a second RAT signal generated by a first RAT transmitter such as the transmitter 144.
• LTE modem 130 may be configured to adjust energy detection threshold 166 based on the received signal strength information 162 and/or header information 164.
• energy detection threshold 166 may be a threshold having a value that indicates whether or not a frequency or channel is sufficiently clear of other transmissions, or noise, or interference, to allow LTE modem 130 to transmit on that frequency or channel (e.g., channel is clear if a detected amount of received energy does not meet the threshold).
• Wi-Fi modem 140 or queuer 170 or LTE modem 130 may filter received signal strength information 162 such that only the received signal strength information 162 from Wi-Fi device transmissions are considered when adjusting energy detection threshold 166.
• the filtering may be based on the header information 164, which allows for discerning between 802. xx preambles transmitted by Wi-Fi devices and LTE devices sending 802.xx preambles.
• energy detection threshold 166 may be more specifically defined as a threshold having a value that indicates whether or not a frequency or channel is sufficiently clear of Wi-Fi device transmissions to allow LTE modem 130 to transmit on that frequency or channel (e.g., channel is clear if a detected amount of received energy does not meet the threshold).
• LTE modem 130 may be configured to not defer transmissions in the presence of other LTE transmissions in the shared frequency or channel, as LTE-enabled devices and LTE transmissions are configured to allow for interference cancellation or to otherwise enable decoding of overlapping LTE transmissions.
• the received signal strength information 162 and/or header information 164 for the one or more messages 160 may be associated with a same frequency or channel in which LTE modem 130 may transmit, e.g., in a shared frequency spectrum.
• logical grouping 301 can include an electrical component 306 for determining the detected energy level value.
• Electrical component 306 may comprise Wi-Fi modem 140 (FIGS. 1 A and IB).
• a UE transmit processor 964 may receive and process data

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• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Signal Processing (AREA)
• Quality & Reliability (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Mobile Radio Communication Systems (AREA)

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• 2015
  • 2015-12-14 US US14/968,563 patent/US9787569B2/en active Active
  • 2015-12-15 WO PCT/US2015/065729 patent/WO2016100287A1/en not_active Ceased
  • 2015-12-15 CN CN201580067586.6A patent/CN107005357B/zh active Active
  • 2015-12-15 EP EP15820011.3A patent/EP3235157B1/en active Active
  • 2015-12-15 JP JP2017531658A patent/JP6419972B2/ja not_active Expired - Fee Related

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