Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
  • H04W52/02—Power saving arrangements
  • H04W52/0209—Power saving arrangements in terminal devices
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
  • G06F13/38—Information transfer, e.g. on bus
  • G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
  • G06F13/4204—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus
  • G06F13/4221—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus being an input/output bus, e.g. ISA bus, EISA bus, PCI bus, SCSI bus
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
  • H04B1/06—Receivers
  • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
  • H04B1/12—Neutralising, balancing, or compensation arrangements
  • H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B15/00—Suppression or limitation of noise or interference
  • H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
  • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• • 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
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
  • Y02D30/00—Reducing energy consumption in communication networks
  • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

• Mobile computing devices such as mobile phones and computer tablets, have become increasingly prevalent in contemporary society. These mobile computing devices are commonly used for a multitude of everyday functions. For example, a mobile computing device may be used to make phone calls or send e-mail messages via a wireless modem. The same mobile computing device may also perform functions in conjunction with other electronic devices to which the mobile computing device is connected. For example, the mobile computing device may upload digital photographs to a desktop computer via a Universal Serial Bus (USB) cable or stream a video to a digital television via a High-Definition Multimedia Interface (HDMI) cable.
• USB Universal Serial Bus
• HDMI High-Definition Multimedia Interface
• a computing device employs a control system configured to arbitrate the activity of multiple interfaces. This arbitration mitigates potential electromagnetic interference (EMI) that may degrade the performance of the computing device. More specifically, upon a first interface requesting to become active, the control system is configured to determine if a second interface is currently active. If the second interface is currently active, the control system is configured to arbitrate the activity of the first interface and the second interface so as to mitigate the potential EMI that may be generated if the two interfaces are concurrently active. In this manner, the computing device includes an aggressor controller and a victim receiver.
• EMI electromagnetic interference
• a method for mitigating EMI of a WLAN modem and a BluetoothTM modem caused by a USB 3.0 controller comprises determining if a USB 3.0 controller issues a request to enter an active state. The method further comprises, in response to the USB 3.0 controller issuing the request to enter the active state, placing the USB 3.0 controller and a WLAN modem in a non- active state. The method further comprises, in response to placing the USB 3.0 controller and the WLAN modem in the non-active state, placing a BluetoothTM modem in the active state for a first-TDM amount of time.
• Figure 4 is a flowchart illustrating a specific exemplary process for mitigating EMI of a victim receiver caused by an aggressor controller in the mobile computing device of Figure 2 using polling;
• the network 14 includes a cellular base station 24 designed to support functions such as cellular phone and data communications with the mobile computing device 12.
• the network 16 is configured to support wireless fidelity ("Wi-Fi") communications, allowing the mobile computing device 12 to connect to other networks, such as the Internet, by way of a Wi-Fi router 26.
• the network 18 is configured to support BluetoothTM technology, providing the mobile computing device 12 with the opportunity to communicate with a BluetoothTM-enabled device 28.
• the network 20 supports communications using wide wireless area network (WW AN) technology.
• WW AN wide wireless area network
• the mobile computing device 12 may connect to the network 20 for a variety of purposes, such as connecting to a virtual private network (VPN) 30.
• VPN virtual private network
• any of the controllers 42, 44, 46, 48, 50, 52, 54, and 56 may be the "aggressor," while any of the controllers 42, 44, 46, 48, 50, 52, 54, and 56 may also be the "victim.”
• a first interface 86 corresponds to the aggressor controller 44
• a second interface 88 corresponds to the victim receiver 38.
• the first interface 86 may correspond to the victim receiver 38
• the second interface 88 may correspond to the aggressor controller 44.
• Figure 3 illustrates an exemplary process 92 employed by the control system 84 for mitigating EMI of the victim receiver 38 caused by the aggressor controller 44 in the mobile computing device 12 of Figure 2.
• a protocol implemented by the control system 84 is initialized, for example, during startup of the mobile computing device 12 (block 94).
• the control system 84 places the first interface 86 (and by extension, the aggressor controller 44) in a non-active state (e.g., a sleep or low power state) (block 96).
• the control system 84 determines if the first interface 86 has issued a request to enter the active state (block 98).
• the control system 84 monitors the first interface 86 until a request to enter the active state is issued. Upon the first interface 86 issuing a request to enter the active state, the control system 84 determines if the second interface 88 (and by extension, the victim receiver 38) is in the active state (block 100). If the control system 84 determines that the second interface 88 is in the active state, the control system 84 issues a request to the second interface 88 to enter the non-active state (block 102). In response to issuing this request, the control system 84 determines if the second interface 88 complies and enters the non-active state (block 104).
• the control system 84 determines whether the USB 3.0 controller 44 has issued a request to enter an active state (block 120). If the USB 3.0 controller 44 has issued such a request, the control system 84 places the USB 3.0 controller 44, the WLAN modem 36, and the BluetoothTM modem 38 in a non-active state (block 122). After each of these devices is in the non-active state, the control system 84 places the USB 3.0 controller 44 in the active state for a first amount of time (block 124). In this manner, upon placing the USB 3.0 controller 44 in the active state, the control system 84 allows the USB 3.0 controller 44 to complete actions during the defined first amount of time. Once the first amount of time has elapsed, the control system 84 determines whether the USB 3.0 controller 44 has additional actions to complete by determining if the USB 3.0 controller 44 has issued another request to enter the active state in block 120.
• the control system 84 polls the BluetoothTM modem 38 to determine if the BluetoothTM modem 38 needs to complete an action (block 132). If the BluetoothTM modem 38 needs to complete an action, the control system 84 places the BluetoothTM modem 38 in the active state for a third amount of time (block 134). However, if the BluetoothTM modem 38 does not need to complete an action in block 132, or once the third amount of time in block 134 has elapsed, the control system 84 determines whether the USB 3.0 controller 44 has issued a request to enter the active state (block 136).
• the process 116 gives priority to the USB 3.0 controller 44 and polls the WLAN modem 36 and the BluetoothTM modem 38 when the USB 3.0 controller 44 does not have actions to complete. Further, in this aspect, the USB 3.0 controller 44 has priority over the WLAN modem 36 and the BluetoothTM modem 38. Because the USB 3.0 controller 44 is given priority over the WLAN modem 36 and the BluetoothTM modem 38 in this aspect, the USB 3.0 controller 44 will not be concurrently active with the WLAN modem 36 and the BluetoothTM modem 38.
• the control system 84 then places the WLAN modem 36 in the active state for the second-TDM amount of time (block 162). Following the second- TDM amount of time, during which the WLAN modem 36 was able to complete actions, the control system 84 determines if the USB 3.0 controller 44 has issued a request to enter the active state (block 164). If such as request has been issued, the control system 84 completes the steps in blocks 144-154 to continue the process of placing the BluetoothTM modem 38, the WLAN modem 36, and the USB 3.0 controller 44 in the active state during individual periods of time. However, if no such request has been issued, the control system 84 completes the steps in blocks 156-162 to continue the process of placing only the BluetoothTM modem 38 and the WLAN modem 36 in the active state during individual periods of time.

Landscapes

• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Signal Processing (AREA)
• Theoretical Computer Science (AREA)
• Physics & Mathematics (AREA)
• General Engineering & Computer Science (AREA)
• General Physics & Mathematics (AREA)
• Telephone Function (AREA)
• Mobile Radio Communication Systems (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=54008006

Family Applications (1)

Country Status (5)

Families Citing this family (2)

Citations (5)

Family Cites Families (21)

• 2014
  • 2014-09-19 US US14/491,175 patent/US9510281B2/en not_active Expired - Fee Related
• 2015
  • 2015-08-13 CN CN201580047980.3A patent/CN106797224A/zh active Pending
  • 2015-08-13 JP JP2017514655A patent/JP2017535119A/ja active Pending
  • 2015-08-13 WO PCT/US2015/045015 patent/WO2016043882A1/en not_active Ceased
  • 2015-08-13 EP EP15754371.1A patent/EP3195484A1/en not_active Withdrawn

Patent Citations (5)

Also Published As

Similar Documents

Legal Events