WO2002030059A2 - Procede pour faire fonctionner un appareil emetteur/recepteur radio de courte portee, en particulier un appareil selon la norme bluethooth, sur un bus serie universel 'usb' - Google Patents

Procede pour faire fonctionner un appareil emetteur/recepteur radio de courte portee, en particulier un appareil selon la norme bluethooth, sur un bus serie universel 'usb' Download PDF

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Publication number
WO2002030059A2
WO2002030059A2 PCT/DE2001/003571 DE0103571W WO0230059A2 WO 2002030059 A2 WO2002030059 A2 WO 2002030059A2 DE 0103571 W DE0103571 W DE 0103571W WO 0230059 A2 WO0230059 A2 WO 0230059A2
Authority
WO
WIPO (PCT)
Prior art keywords
usb
short
bluetooth
saving mode
current
Prior art date
Application number
PCT/DE2001/003571
Other languages
German (de)
English (en)
Other versions
WO2002030059A3 (fr
Inventor
Bernd Peter Hopf
Yusuf Kalayci
Claus-Peter Meyer-Bothling
Uwe Schwark
Michael Tolk
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2002030059A2 publication Critical patent/WO2002030059A2/fr
Publication of WO2002030059A3 publication Critical patent/WO2002030059A3/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/325—Power saving in peripheral device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode

Definitions

  • the invention relates to a method for operating a short-range radio transceiver, in particular a "Bluetooth” device, on a universal serial bus "USB”.
  • the “Bluetooth standard” is a short-range radio standard that works with carrier frequencies from the worldwide unlicensed “Industrial”, “Scientific”, “Medical” 2.4 GHz band (ISM band) and a wireless connection of end devices (devices ) in a radio cell with a radius of up to 10 meters, in special cases even up to 100 meters, whereby the carrier frequencies are changed in a (pseudo) random order up to 1600 times per second in order to prevent radio interference. Up to 19 frequencies (channels) in the range between 2.402 and 2.480 GHz are provided for this frequency hopping method "frequency hopping”.
  • Radio cells are combined into a so-called “pico network” and communicate with one another, the individual devices - realized by time division multiplexing - being able to be members of several pico networks, so that these pico networks are thereby connected to form a so-called “scatter network”.
  • Every device in a pico network can initialize this pico network.
  • a device that has initialized a pico network controls the remaining members of the pico network and synchronizes their timers, therefore it is referred to as "master", while the remaining members of the pico network are referred to as "slaves".
  • Bluetooth devices Before establishing a connection in the Pico network, Bluetooth devices are in a power saving mode "standby mode". Devices that are not connected look for possible network messages every 1.28 seconds.
  • hold mode the device remains integrated in the pico network, but no data is transmitted. Only an internal timer continues to run in the slave. If necessary, the data transfer starts without delay.
  • the hold mode can be arranged by the master for the slave. On the other hand, the slave can request the master to switch it to this mode.
  • the device listens to the network at programmable intervals.
  • the timer for synchronization in the slave also continues here.
  • Devices can also be parked in the network ("Park mode").
  • the device loses its address in the network, so it can only follow the network traffic and synchronizes its internal timer with that of the master at larger intervals.
  • USB standard is a bus standard for connecting peripheral devices via a "USB port” to a PC (host PC) and is designed as a combined star-bus structure, with several - similar to the Bluetooth standard - Up to 127 devices can be connected in parallel to a "USB” (Universal Serial Bus) and operated by a master (USB host adapter in the PC). Individual devices or “USB hubs” can be connected to the outputs of the host adapter. With more than two USB devices at the latest, such a hub is necessary as a distributor. In addition to the power distribution, the hubs also ensure that only one USB device sends its data to the host controller. The hubs can be cascaded as required.
  • the transmission via the USB is divided into channels.
  • low-speed channel For “slow” devices there is a “low-speed channel” with up to 1.5 Mbit / s and a “medium-speed channel” with 12 Mbit / s which are routed via the same interface.
  • a "high-speed channel” with 500 Mbit / s is also provided.
  • USB standard In contrast to Bluetooth, the USB standard only provides a power saving mode. This "suspend mode" must be initiated as soon as there is no data traffic on the USB interface.
  • USB and Bluetooth systems have a comparable hierarchical structure.
  • the object on which the invention is based is to specify a method which enables the operation of a short-range radio transceiver, in particular a "Bluetooth” device, on a universal serial bus "USB”.
  • a short-range radio transmitter / radio receiver device in particular re a "Bluetooth” device, on a universal serial bus "USB" during normal operation of the terminal in periods in which no user or control data reach the USB via the terminal, pseudo data sent to the USB and during a Power-saving mode of the USB, individual functional units of the short-range radio transmitter / radio receiver device at least partially switched off.
  • One of the main advantages of the method according to the invention is that, in the case of the short-range radio transmitter / receiver, user or control data temporarily not present on the USB (port), an unwanted reaching of the power saving mode of the universal serial bus in a very simple manner is prevented. Furthermore, an unwanted termination of the power saving mode due to high power requirements on the part of the radio transceiver is avoided, the orientation or adaptation to the power saving mode of the universal serial bus additionally has the advantage that only the conditions for a power saving mode are monitored and maintained must, since only one power saving mode is defined for the (USB) technology.
  • Isuspend lBth_mm + (625 ⁇ s / (t H F_Ruhe + 625 ⁇ S)) * I H F_akt ⁇ v ⁇ 0, 5l ⁇ lA
  • tHF_Ruhe: Duration for switched-off transmitter or receiver
  • IHF Atv: current requirement for active HF part (t 2 -t ⁇ )
  • USB devices with high power consumption high-power USB device
  • a high-power USB port will be used and, according to the USB standard, the suspending current Isuspend ⁇ 2.5 mA.
  • USB devices with low power consumption low-power USB device
  • a low-power USB port is used and, according to the USB standard, the suspend Current Is usp nd ⁇ 0.5 mA (see formula "low power”).
  • the average power consumption (I) of the connected Bluetooth device / s during the suspend mode is that
  • the maximum current consumption on average may not exceed 2.5mA (high-power) or 0.5mA (low-power)
  • individual current peaks may not be longer than 1 ms, but the maximum current consumption for high or exceed low-power USB devices
  • a Bluetooth device master or slave
  • a Bluetooth device must not send or receive, because when transmission or reception is switched on there is a high probability of a violation of USB conformity.
  • the functionality of the remaining functional units (baseband) in the Bluetooth device is limited to such an extent that the total current consumption does not exceed 2.5 mA (high power) or 0.5 mA (low power) for the Bluetooth device.
  • a maximum current consumption by the Bluetooth device for suspend mode is based on a basic load lBth_min (this gives the minimum current requirement I min shown in the figure that flows at the USB port) is then only with, in the minimum requirements or functions of the Bluetooth device are met and an average value ((625 ⁇ s / (t H F_Ruhe + 625 ⁇ s)) * I HF _zin) for the current consumption of the high-frequency part HF part, the one shown in the figure Current flow the time of suspend mode in that Interval [t 2 ..t RU he] falls and the time of the switched off high-frequency part t H _Ruhe results from t ⁇ -t Ru he.
  • the high-frequency part is active in the interval [t 2 ..t ⁇ ], since data is received via the receiver R x , which results in the maximum current requirement of the Bluetooth device I ma ⁇ , since the base part I m ⁇ n is the current requirement of the HF part I H F__Ak ⁇ added. It is quite conceivable that the suspend mode will continue beyond time t 2 if the limit for the suspend current (0.5 mA for low power; 2.5 mA for high power) is determined by the maximum current I max is not exceeded or exceeding it does not take longer than 1 ms otherwise the USB port returns to normal operation.
  • Bluetooth device functioning as a slave can fall into one of these modes.
  • a Bluetooth device functioning as a master can only remain in a power-saving mode until the last slave has been resolved and synchronization can take place with the slave waking up first.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Information Transfer Systems (AREA)
  • Communication Control (AREA)
  • Power Sources (AREA)

Abstract

L'invention concerne un procédé selon lequel, pour faire fonctionner un appareil émetteur/récepteur radio de courte portée, en particulier un appareil selon la norme 'Bluetooth', sur un bus série universel 'USB', pendant un fonctionnement normal du terminal dans des tranches de temps, au cours desquelles aucune donnée utile ou de commande n'arrive au bus USB par l'intermédiaire dudit appareil 'Bluetooth', des pseudo-données sont envoyées au bus USB, et, en mode économie de courant du bus USB, différentes unités fonctionnelles de l'appareil émetteur/récepteur radio de courte portée sont au moins partiellement coupées.
PCT/DE2001/003571 2000-09-29 2001-09-17 Procede pour faire fonctionner un appareil emetteur/recepteur radio de courte portee, en particulier un appareil selon la norme bluethooth, sur un bus serie universel 'usb' WO2002030059A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10048465A DE10048465A1 (de) 2000-09-29 2000-09-29 Verfahren zum Betreiben eines Kurzstrecken-Funksende-/-Funkempfangsgeräts, inbesondere eines "Bluetooth"-Geräts, an einem universellen seriellen Bus "USB"
DE10048465.4 2000-09-29

Publications (2)

Publication Number Publication Date
WO2002030059A2 true WO2002030059A2 (fr) 2002-04-11
WO2002030059A3 WO2002030059A3 (fr) 2002-11-28

Family

ID=7658203

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/003571 WO2002030059A2 (fr) 2000-09-29 2001-09-17 Procede pour faire fonctionner un appareil emetteur/recepteur radio de courte portee, en particulier un appareil selon la norme bluethooth, sur un bus serie universel 'usb'

Country Status (2)

Country Link
DE (1) DE10048465A1 (fr)
WO (1) WO2002030059A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004059497A2 (fr) * 2002-12-23 2004-07-15 Microtune (San Diego), Inc. Remplacement de cable sans fil de peripheriques informatiques au moyen d'un adaptateur principal
WO2004059916A2 (fr) * 2002-12-23 2004-07-15 Microtune (San Diego), Inc. Remplacement de cable sans fil pour peripheriques d'ordinateur
US7127541B2 (en) 2002-12-23 2006-10-24 Microtune (Texas), L.P. Automatically establishing a wireless connection between adapters
US7305511B2 (en) 2002-12-23 2007-12-04 Microtune (Texas), L.P. Providing both wireline and wireless connections to a wireline interface
JP2013219690A (ja) * 2012-04-11 2013-10-24 Olympus Corp 無線通信装置、メモリ装置、無線通信システム、無線通信方法、およびプログラム

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000036757A2 (fr) * 1998-12-18 2000-06-22 Silicon Wave, Inc. Appareil et procede destines aux telecommunications sans fil

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000036757A2 (fr) * 1998-12-18 2000-06-22 Silicon Wave, Inc. Appareil et procede destines aux telecommunications sans fil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
UNIVERSAL SERIAL BUS IMPLEMENTERS FORUM: "Universal Serial Bus Specification - Revision 1.1" UNIVERSAL SERIAL BUS SPECIFICATION, XX, XX, 23. September 1998 (1998-09-23), Seiten 175-206, XP002170962 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004059497A2 (fr) * 2002-12-23 2004-07-15 Microtune (San Diego), Inc. Remplacement de cable sans fil de peripheriques informatiques au moyen d'un adaptateur principal
WO2004059916A2 (fr) * 2002-12-23 2004-07-15 Microtune (San Diego), Inc. Remplacement de cable sans fil pour peripheriques d'ordinateur
WO2004059497A3 (fr) * 2002-12-23 2004-08-19 Microtune San Diego Inc Remplacement de cable sans fil de peripheriques informatiques au moyen d'un adaptateur principal
WO2004059916A3 (fr) * 2002-12-23 2004-10-07 Microtune San Diego Inc Remplacement de cable sans fil pour peripheriques d'ordinateur
US6950859B1 (en) 2002-12-23 2005-09-27 Microtune (San Diego), Inc. Wireless cable replacement for computer peripherals
US7127541B2 (en) 2002-12-23 2006-10-24 Microtune (Texas), L.P. Automatically establishing a wireless connection between adapters
US7136904B2 (en) 2002-12-23 2006-11-14 Microtine (San Diego), Inc. Wireless cable replacement for computer peripherals using a master adapter
US7305511B2 (en) 2002-12-23 2007-12-04 Microtune (Texas), L.P. Providing both wireline and wireless connections to a wireline interface
JP2013219690A (ja) * 2012-04-11 2013-10-24 Olympus Corp 無線通信装置、メモリ装置、無線通信システム、無線通信方法、およびプログラム
US9332563B2 (en) 2012-04-11 2016-05-03 Olympus Corporation Wireless communication device, memory device, wireless communication system, wireless communication method, and computer program product

Also Published As

Publication number Publication date
DE10048465A1 (de) 2002-04-18
WO2002030059A3 (fr) 2002-11-28

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