WO2002030059A2 - Method for operationg a short-range radio transmitting/radio receiving device, especially a 'bluetooth' device, on a universal serial bus 'usb' - Google Patents

Method for operationg a short-range radio transmitting/radio receiving device, especially a 'bluetooth' device, on a universal serial bus '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
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usb
short
bluetooth
saving mode
current
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PCT/DE2001/003571
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German (de)
French (fr)
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WO2002030059A3 (en
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Bernd Peter Hopf
Yusuf Kalayci
Claus-Peter Meyer-Bothling
Uwe Schwark
Michael Tolk
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Siemens Aktiengesellschaft
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Publication of WO2002030059A3 publication Critical patent/WO2002030059A3/en

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    • 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.

Abstract

The invention relates to a method for operating a short-range radio transmitting/operating receiving device, especially a "Bluetooth" device, on a universal serial bus "USB". According to the inventive method, pseudo data are sent to the USB during normal operation of a terminal in periods in which no useful or control data reach USB through the "Bluetooth" device. During a power-saving mode of the USB, individual function units of the short-range transmitting/receiving device are at least partially deactivated.

Description

Beschreibungdescription
Verfahren zum Betreiben eines Kurzstrecken-Funksende-/-Funk- empfangsgeräts, insbesondere eines "Bluetooth"-Geräts, an ei- nem universellen seriellen Bus "USB"Method for operating a short-range radio transceiver, in particular a "Bluetooth" device, on a universal serial bus "USB"
Die Erfindung betrifft ein Verfahren zum Betreiben eines Kurzstrecken-Funksende-/-Funkempfangsgeräts, insbesondere eines "Bluetooth"-Geräts, an einem universellen seriellen Bus "USB".The invention relates to a method for operating a short-range radio transceiver, in particular a "Bluetooth" device, on a universal serial bus "USB".
Der "Bluetooth-Standard" ist ein Kurzstreckenfunkstandard, der mit Trägerfrequenzen aus dem weltweit nicht lizenzierten "Industrial-", "Scientific-", "Medical" 2,4 GHz Band (ISM- Band) funktioniert und eine drahtlose Verbindung von Endgeräten (Devices) in einer Funkzelle mit einem Radius bis zu 10 Metern, in besonderen Fällen sogar bis über 100 Metern, ermöglicht, wobei die Trägerfrequenzen, um Funkinterferenzen zu verhindern, in einer (pseudo-) zufälligen Reihenfolge bis 1600mal pro Sekunde gewechselt werden. Für dieses Frequenzsprungverfahren "Frequency Hopping" sind bis zu 19 Frequenzen (Kanäle) im Bereich zwischen 2,402 und 2, 480 GHz vorgesehen.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".
Bis zu acht nach dem Bluetooth-Standard funktionierende Devi- ces können in der - auch als "Pico-Zelle" bezeichneten -Up to eight devices that work according to the Bluetooth standard can be in the - also referred to as "pico cell" -
Funkzelle zu einem sogenannten "Pico-Netz" zusammengeschlossen werden und miteinander kommunizieren, wobei die einzelnen Devices - durch Zeitmultiplexverfahren realisiert - Mitglieder mehrerer Pico-Netze sein können, so dass diese Pico-Netze dadurch zu einem sogenannten "Scatter-Netz" verbunden sind.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".
Jedes Device in einem Pico-Netz, kann dieses Pico-Netz initialisieren. Ein Device, das ein Pico-Netz initialisiert hat, kontrolliert die restlichen Mitglieder des Pico-Netzes und synchronisiert deren Timer, daher wird es mit "Master" bezeichnet, während die verbleibenden Mitglieder des Pico- Netzes mit "Slaves" bezeichnet werden. Devices, die Mitglieder mehrerer Pico-Netze sind und diese Pico-Netze, die sich durch unterschiedliche Hopping-Kanal Folgen unterscheiden lassen, zu Scatter-Netzen vereinen, synchronisieren sich in jedem Multiplex-Zeitschlitz auf den je- weils aktuellen Master auf.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". Devices that are members of several pico networks and combine these pico networks, which can be distinguished by different hopping channel sequences, into scatter networks, synchronize themselves in each multiplex time slot with the current master.
Bevor sie eine Verbindung im Pico-Netz aufbauen, befinden sich Bluetooth Geräte in einem Stromsparmodus "Standby- Modus". Dabei suchen nicht verbundene Geräte alle 1,28 Sekun- den nach eventuellen Netznachrichten.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.
Neben dem Standby-Modus ohne NetzVerbindung ist noch eine Reihe weiterer Stromsparfunktionen möglich. Im "Hold-Modus" bleibt das Gerät in das Pico-Netz integriert, es werden aber keine Daten übertragen. Lediglich ein interner Timer läuft im Slave weiter. Bei Bedarf startet die Datenübertragung verzögerungsfrei. Der Hold-Modus kann vom Master für den Slave angeordnet werden. Anderseits kann der Slave den Master auffordern, ihn in diesen Modus zu schalten.In addition to the standby mode without a network connection, a number of other power saving functions are possible. In "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.
Im "Sniff-Modus" lauscht das Gerät in programmierbaren Abständen in das Netz. Auch hier läuft der Timer zur Synchronisation im Slave weiter.In "sniff mode" the device listens to the network at programmable intervals. The timer for synchronization in the slave also continues here.
Weiterhin lassen sich Geräte im Netz parken ("Park-Modus") . Hierbei verliert das Gerät seine Adresse im Netz, kann den Netzverkehr also nur mehr mit verfolgen und synchronisiert in größeren Abständen seinen internen Timer mit dem des Masters .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.
Der "USB-Standard" ist ein Bus-Standard für den Anschluss von Peripheriegeräten über einen "USB-Port" an einem PC (Host-PC) und ist als kombinierte Stern-Bus-Struktur ausgelegt, wobei analog zum Bluetooth-Standard mehrere - bis zu 127 - Geräte (Devices) parallel an einem "USB" (Universal Seriell Bus) an- geschlossen sein können und von einem Master (USB-Host- Adapter im PC) betrieben werden. An den Ausgängen des Hostadapters können einzelne Geräte oder "USB-Hubs" angeschlossen werden. Spätestens bei mehr als zwei USB-Geräten ist ein solcher Hub als Verteiler notwendig. Neben der Stromverteilung sorgen die Hubs auch dafür, dass im- er nur ein USB-Gerät seine Daten zum Hostcontroller schickt. Die Hubs können beliebig kaskadiert werden.The "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.
Um Geräte mit unterschiedlichen Übertragungsgeschwindigkeiten anschließen zu können ist die Übertragung über den USB in Kanäle unterteilt.In order to be able to connect devices with different transmission speeds, the transmission via the USB is divided into channels.
Für "langsame" Geräte gibt es einen "Low-Speed-Kanal" mit bis 1,5 MBit/s und einen "Medium-Speed-Kanal" mit 12 MBit/s die über dieselbe Schnittstelle geführt werden. Ein "High-Speed- Kanal" mit 500 MBit/s ist auch vorgesehen.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.
Beim USB-Standard ist - im Gegensatz zu Bluetooth - nur ein Stromsparmodus vorgesehen. Dieser "Suspend-Mode" muss eingeleitet werden, sobald kein Datenverkehr auf der USB- Schnittstelle vorhanden ist.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.
Die zunehmende Konvergenz der Informations- und Telekommunikationsnetzen legt nahe Bluetooth- und USB-Geräte zu verbinden, insbesondere da USB- und Bluetooth-Systeme eine ver- gleichbare hierarchische Struktur aufweisen.The increasing convergence of information and telecommunication networks suggests that Bluetooth and USB devices should be connected, especially since USB and Bluetooth systems have a comparable hierarchical structure.
Die der Erfindung zugrunde liegende Aufgabe ist es ein Verfahren anzugeben, dass das Betreiben eines Kurzstrecken- Funksende-/-Funkempfangsgeräts, insbesondere eines "Blue- tooth"-Geräts, an einem universellen seriellen Bus "USB" ermöglicht.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".
Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst.This object is achieved by the features of patent claim 1.
Beim dem erfindungsgemäßen Verfahren werden zum Betreiben von einem Kurzstrecken-Funksende-/-Funkempfangsgerät, insbesonde- re einem "Bluetooth"-Gerät, an einem universellen seriellen Bus "USB" während eines Normal-Betriebs des Endgeräts in Zeiträumen, in denen keine Nutz- bzw. Steuerdaten über das Endgerät an den USB gelangen, Pseudodaten an den USB gesendet und während eines Stromsparmodus des USB, einzelne Funktionseinheiten des Kurzstrecken-Funksende-/-Funkempfangsgeräts zumindest teilweise abgeschaltet.In the method according to the invention, 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.
Einer der wesentlichen Vorteile des erfindungsgemäßen Verfah- rens ist, dass im Falle seitens des Kurzstrecken-Funksende-/- Funkempfangsgeräts temporär nicht anliegender Nutz- bzw. Steuerdaten am USB (-Port) ein ungewolltes Erreichen des Stromsparmodus des universellen seriellen Busses auf sehr einfaches Weise verhindert wird. Des Weiteren ist auch ein ungewolltes Beenden des Stromsparmodus aufgrund hohen Strombedarfs seitens des Funksende-/Funkempfangsgeräts vermieden, wobei die Orientierung bzw. Anpassung an den Stromsparmodus des universelle serielle Busses birgt zusätzlich noch den Vorteil, dass nur die Bedingungen für einen Stromsparmodus überwacht und eingehalten werden müssen, da für die (USB)- Technologie nur ein Stromsparmodus definiert ist.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.
Weitere Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Further advantageous refinements of the invention are specified in the subclaims.
Ein Ausführungsbeispiel der Erfindung wird anhand der einzigen Figur dargestellt. Diese zeigt:An embodiment of the invention is illustrated with reference to the single figure. This shows:
Beispielhafter Verlauf der Stromaufnahme eines an einem universellen seriellen Bus angeschlossenen Bluetooth Devices im Slave-ModusExemplary course of the current consumption of a Bluetooth device connected to a universal serial bus in slave mode
In der Figur ist der Verlauf eines, von einem gemäß dem Bluetooth-Standard funktionierenden Kurzstrecken-Funksende-/- Funkempfangsgeräts (Bluetooth-Device, Bluetooth-Gerät) benötigten, elektrischen Stroms I-.th, der, um das Betreiben an einem universellen seriellen Bus zu gewährleisten, insbesondere die Verbindung der Stromsparmodi Sniff, Park und Hold gemäß dem Bluetooth-Standard einerseits und dem Stromsparmodus Suspend gemäß USB-Standard andererseits, erfindungsgemäß folgende BedingungenIn the figure, the course of an electrical current I-.th required by a short-range radio transmitter / radio receiver device (Bluetooth device, Bluetooth device) functioning in accordance with the Bluetooth standard, which is used to operate a universal serial To ensure bus, in particular the connection of the power saving modes Sniff, Park and Hold according to the Bluetooth standard on the one hand and the power saving mode Suspend according to the USB standard on the other hand, the following conditions according to the invention
Isuspend = lBth_mιn+ ( 625μs/ ( tHF_Ruhe+ 625μs ) ) * lHF_aktιv ≤ 2 , 5mAIsuspend = lBth_mιn + (625μs / (t HF _Ru h e + 625μs)) * l HF _aktιv ≤ 2, 5mA
(high-power)(High-power)
Isuspend = lBth_mm+ ( 625μs/ ( tHF_Ruhe+ 625μS ) ) * IHF_aktιv < 0 , 5lϊlAIsuspend = lBth_mm + (625μs / (t H F_Ruhe + 625μS)) * I H F_aktιv <0, 5lϊlA
(low-power)(Low-power)
erfüllt, wobei mitmet, with with
Isuspend '• = Erlaubter Maximalstrom im Suspend-Mode am USB I-.th_ιrun := Minimal notwendiger/möglicher Strom für Prozessaktivität des Bluetooth-Device im Stromsparmodus tHF_Ruhe := Zeitdauer für ausgeschalteten Sender bzw. Empfän
Figure imgf000007_0001
Isuspend '• = Permitted maximum current in suspend mode on USB I-.th_ιrun: = Minimum necessary / possible current for process activity of the Bluetooth device in power saving mode tHF_Ruhe: = Duration for switched-off transmitter or receiver
Figure imgf000007_0001
625μs := tH_aκtιv für Bluetooth625μs: = t H _aκtιv for Bluetooth
IHF Atv := Strombedarf für aktives HF-Teil (t2-tι)IHF Atv: = current requirement for active HF part (t 2 -tι)
definiert sind.are defined.
Da gemäß dem USB-Standard zwei Geräteklassen aufgrund ihres Stromverbrauchs unterschieden werden, sind für die einzuhaltende Bedingung zwei Fälle zu unterscheiden. Sollen USB- Geräte mit hohem Stromverbrauch (High-Power-USB-Device) ver- bunden werden, wird ein High-Power-USB-Port zum Einsatz kommen und es gilt gemäß USB-Standard für den Suspend-Strom Isuspend ≤ 2,5 mA. (siehe Formel "high-power"), werden USB- Geräte mit niedrigem Stromverbrauch (Low-Power-USB-Device) verbunden, kommt ein Low-Power-USB-Port zum Einsatz und es gilt gemäß USB-Standard für den Suspend-Strom Isusp nd < 0,5 mA (siehe Formel "low-power") . Damit die geforderte Bedingung für die Stromaufnahme während des Suspend-Mode eingehalten wird, gilt für den mittleren Stromverbrauch (I) des/der angeschlossenen Bluetooth Device/s während des Suspend-Mode, dassSince, according to the USB standard, two device classes are differentiated based on their power consumption, two cases must be distinguished for the condition to be observed. If USB devices with high power consumption (high-power USB device) are to be connected, a high-power USB port will be used and, according to the USB standard, the suspending current Isuspend ≤ 2.5 mA. (see formula "high-power"), USB devices with low power consumption (low-power USB device) are connected, 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"). In order for the required condition for the current consumption to be met during the suspend mode, the average power consumption (I) of the connected Bluetooth device / s during the suspend mode is that
a) die maximale Stromaufnahme im Mittel 2,5mA (high-power) bzw. 0,5mA (low-power) nicht übersteigen darf, b) einzelne Stromspitzen dürfen nicht länger als 1 ms sein, dürfen aber die maximale Stromaufnahme für high- oder low-power USB-Devices überschreiten, c) nach einer Stromspitze muss der maximale Suspend-Strom I- suspend (2,5mA oder 0,5 mA) wieder erreicht bzw. unterschritten werden.a) the maximum current consumption on average may not exceed 2.5mA (high-power) or 0.5mA (low-power), b) individual current peaks may not be longer than 1 ms, but the maximum current consumption for high or exceed low-power USB devices, c) after a current peak, the maximum suspend current I-suspend (2.5mA or 0.5 mA) must be reached or fallen below again.
Daher darf ein Bluetooth-Device (Master oder Slave) nicht senden und keinesfalls empfangen, weil bei eingeschaltetem Sende bzw. Empfangsbetrieb eine hohe Wahrscheinlichkeit für eine Verletzung der USB-Konformität gegeben ist.For this reason, a Bluetooth device (master or slave) must not send or receive, because when transmission or reception is switched on there is a high probability of a violation of USB conformity.
Aus diesem Grund wird das Hochfrequenzteil (Sende-For this reason, the high-frequency part (transmission
/Empfangsteil) des Bluetooth-Device zumindest teilweise und/oder zumindest temporär ausgeschaltet und die Funktionalität der verbleibenden Funktionseinheiten (Basisband) im Bluetooth-Device so weit eingeschränkt, dass die gesamte Stromaufnahme nicht größer als 2,5mA (high power) oder 0,5mA (low power) für das Bluetooth-Device ist./ Receiving part) of the Bluetooth device is at least partially and / or at least temporarily switched off and 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.
Gemäß der oben angeführten Bedingung setzt sich eine maximale Stromaufnahme durch des Bluetooth-Device für den Suspend-Mode aus einer Grundlast lBth_min (diese ergibt den in der Figur dargestellten minimalen Strombedarf Imin. der am USB-Port fließt) wird dann nur mit, in der minimale Anforderungen bzw. Funktionen des Bluetooth-Device erfüllt werden und einem Mittelwert ( (625μs/ (tHF_Ruhe+625μs) ) * IHF_aktiv) für die Stromaufnah- me des Hochfrequenzteils HF-Teils, wobei bei dem in der Figur dargestellten Stromverlauf die Zeit des Suspend-Mode in das Interval [t2..tRUhe] fällt und sich die Zeit des ausgeschalteten Hochfrequenzteils tH_Ruhe aus tι-tRuhe ergibt.According to the above-mentioned condition, 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 ((625μs / (t H F_Ruhe + 625μs)) * I HF _aktiv) 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 tι-t Ru he.
Im Intervall [t2..tι] ist das Hochfrequenzteil aktiv, da über den Empfänger Rx Daten empfangen werden, dabei ergibt sich der maximale Strombedarf des Bluetooth-Devices Imaχ, da zur Grundlast Imιn der Strombedarf des HF-Teils IHF__Akι hinzuge- kommt. Hierbei ist durchaus denkbar, dass eine Fortsetzung des Suspend-Mode über den Zeitpunkt t2 stattfindet, wenn die Grenze für den Suspend-Strom (0,5 mA bei low-power; 2,5 mA bei high-power) durch den maximalen Strom Imax nicht überschritten wird bzw. eine Überschreitung nicht länger als 1 ms dauert andernfalls geht der USB-Port wieder in den Normalbetrieb.The high-frequency part is active in the interval [t 2 ..tι], since data is received via the receiver R x , which results in the maximum current requirement of the Bluetooth device I ma χ, since the base part I mιn is the current requirement of the HF part I H F__Akι 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.
Dabei muss auch berücksichtigt werden, dass für den Hold, Sniff oder Park Mode gilt, dass nur ein als Slave funktionierendes Bluetooth-Device in einen dieser Modi fallen kann. Ein als Master funktionierendes Bluetooth-Device kann nur solange in einem Stromsparmodus bleiben bis der letzte Slave abgehandelt wurde und eine Synchronisation mit dem zuerst aufwachenden Slave erfolgen kann.It must also be taken into account that for hold, sniff or park mode it applies that only a 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.
Diese Vorgehensweise verhindert ein ungewolltes Erreichen des Normalbetriebs, wobei die generelle Steuerung der Anpassung und damit des Ablaufs sowohl der einzelnen Stromsparmodi gemäß Bluetooth-Standard als auch des Stromsparmodus gemäß USB- Standard entweder seitens USB oder Bluetooth erfolgt.This procedure prevents unintentional achievement of normal operation, with the general control of the adaptation and thus the sequence of both the individual power-saving modes according to the Bluetooth standard and the power-saving mode according to the USB standard being carried out either by USB or Bluetooth.
Für die Anpassung ist darüber hinaus auch ein ungewolltes Erreich des Suspend-Modus aufzufangen, der bei USB nur erreicht wird, wenn für die Zeitdauer von 3 ms kein Datenverkehr auf der USB-Schnittstelle (Port) vorhanden ist.For the adaptation, an unwanted reaching of the suspend mode must also be compensated, which is only achieved with USB if there is no data traffic on the USB interface (port) for a period of 3 ms.
Dazu wird erfindungsgemäß in regelmäßigen Abständen (< 3 ms) , in denen die Ablaufsteuerung von einem gewünschten Normalbe- trieb ausgeht, Dummy bzw. Pseudodaten an den USB bzw. den USB-Port gelegt. For this purpose, according to the invention, at regular intervals (<3 ms), in which the sequential control system operates from a desired normal drives runs out, dummy or pseudo data to the USB or the USB port.

Claims

Patentansprüche claims
1. Verfahren zum Betreiben eines Kurzstrecken-Funksende-/- Funkempfangsgeräts, insbesondere "Bluetooth"-Geräts, an einem universellen seriellen Bus "USB" mit folgenden Merkmalen: a) Während eines Normal-Betriebs des Kurzstrecken-Funk- sende-/-Funkempfangsgeräts in Zeiträumen, in denen keine Nutz- und/oder Steuerdaten über das Kurzstrecken- Funksende-/-Funkempfangsgerät an den USB gelangen, Pseudodaten an den USB gesendet werden, b) während eines Stromsparmodus des USB, einzelne Funkti¬ onseinheiten des Kurzstrecken-Funksende-/-Funkempfang- sgeräts zumindest teilweise abgeschaltet werden.1. Method for operating a short-range radio transceiver, in particular "Bluetooth" device, on a universal serial bus "USB" with the following features: a) During normal operation of the short-range radio transceiver in periods in which no payload and / or control data via the short-range radio transmitter - / - get radio receiving device to the USB, dummy data are sent to the USB,) b during a power saving mode of the USB, single functi ¬ reduction units of the short-distance radio transmitting / Radio receiver are at least partially switched off.
Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass während des Stromsparmodus ein Sende-/Empfangsteil des Kurzstrecken-Funksende-/-Funkempfangsgeräts zumindest zeitweise abgeschaltet ist.A method according to claim 1, characterized in that during the power saving mode, a transmitting / receiving part of the short-range radio transmitting / receiving device is at least temporarily switched off.
3. Verfahren nach dem Anspruch 2, dadurch gekennzeichnet, dass während des Stromsparmodus ein Gesamtstrom (I) zur Verfügung gestellt wird, der die Summe von einem für die verbleibenden Funktionseinheiten notwendigen Minimalstrom (lBth_mm) und einem Mittelwert für die Stromaufnahme des Sende-/Empfangsteils, nicht überschreiten darf.3. The method according to claim 2, characterized in that a total current (I) is made available during the power saving mode, which is the sum of a minimum current required for the remaining functional units (l B th_ m m) and an average value for the current consumption of the Transceiver part, must not exceed.
4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass a) der Gesamtstrom (I) gemäß der Formel I = lBth_mιn + ( tκF_Aktιv / ( tHF_Ruhe+ tκF_Aktιv ) ) * lHF_aktιv festgelegt ist, wobei4. The method according to claim 3, characterized in that a) the total current (I) according to the formula I = lBth_mιn + (tκF_Aktιv / (tHF_Ruhe + tκF_Aktιv)) * lHF_aktιv is fixed, wherein
I Gesamtstrom während des Stromsparmodus lBth_mιn Minimalstrom lHF_aktιv Stromaufnahme Sende-/Empfangsteil tκF_Ruhe Zeitdauer inaktives Sende-/Empfangsteil tHF_Aktιv Zeitdauer aktives Sende-/Empfangsteil definiert sind, b) der Gesamtstrom (I) einen für den Stromsparmodus des USB zugelassenen Maximalstrom nicht überschreiten darf.I total current during the power saving mode lBth_mιn minimum current lHF_aktιv current consumption transmission / reception part tκF_Ruhe period of time inactive transmission / reception part tHF_Aktιv time period of active transmission / reception part are defined, b) the total current (I) must not exceed a maximum current permitted for the power saving mode of the USB.
5. Verfahren nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Pseudodaten in diskreten Zeitabständen wiederholt gesendet werden. 5. The method according to any one of the preceding claims, characterized in that the pseudo data are sent repeatedly at discrete time intervals.
PCT/DE2001/003571 2000-09-29 2001-09-17 Method for operationg a short-range radio transmitting/radio receiving device, especially a 'bluetooth' device, on a universal serial bus 'usb' WO2002030059A2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004059497A2 (en) * 2002-12-23 2004-07-15 Microtune (San Diego), Inc. Wireless cable replacement for computer peripherals using a master adapter
WO2004059916A2 (en) * 2002-12-23 2004-07-15 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
US7305511B2 (en) 2002-12-23 2007-12-04 Microtune (Texas), L.P. Providing both wireline and wireless connections to a wireline interface
JP2013219690A (en) * 2012-04-11 2013-10-24 Olympus Corp Radio communication device, memory device, radio communication system, radio communication method and program

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000036757A2 (en) * 1998-12-18 2000-06-22 Silicon Wave, Inc. Apparatus and method for wireless communications

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000036757A2 (en) * 1998-12-18 2000-06-22 Silicon Wave, Inc. Apparatus and method for wireless communications

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 (en) * 2002-12-23 2004-07-15 Microtune (San Diego), Inc. Wireless cable replacement for computer peripherals using a master adapter
WO2004059916A2 (en) * 2002-12-23 2004-07-15 Microtune (San Diego), Inc. Wireless cable replacement for computer peripherals
WO2004059497A3 (en) * 2002-12-23 2004-08-19 Microtune San Diego Inc Wireless cable replacement for computer peripherals using a master adapter
WO2004059916A3 (en) * 2002-12-23 2004-10-07 Microtune San Diego Inc Wireless cable replacement for computer peripherals
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 (en) * 2012-04-11 2013-10-24 Olympus Corp Radio communication device, memory device, radio communication system, radio communication method and program
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

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