WO2019030014A1

WO2019030014A1 - Method for waking up a receiver by a transmitter by means of bluetooth low energy radio technology

Info

Publication number: WO2019030014A1
Application number: PCT/EP2018/070377
Authority: WO
Inventors: Ralf Prenzel
Original assignee: Robert Bosch Gmbh
Priority date: 2017-08-07
Filing date: 2018-07-27
Publication date: 2019-02-14
Also published as: DE102017213630A1

Abstract

The invention relates to a method for initiating a radio connection between a transmitter and a receiver by means of Bluetooth low energy radio technology, which method can be used with a transmitter in the form of a mobile terminal both to wake up the receiver and also for data communication with the receiver. In addition to the transmitter address and receiver address, an additional piece of information regarding the radio technology to be used is added to a message to be transmitted from the transmitter to the receiver.

Description

Description title

A method for waking up a receiver by a transmitter using the Bluetooth low energy radio technology

The invention relates to a method and a data communication device for waking a receiver by a transmitter by means of the Bluetooth low energy radio technology.

State of the art

In the prior art so-called multi-function keys are known, by means of which, for example, the departure test for a vehicle, in particular a truck, can be performed. Such multifunction keys are typically based on near field radio, for example in the range of 433 MHz. Furthermore, the multifunction keys can also be used to wake up the vehicle, as all necessary control units of the vehicle have to function or have to be in operation for the downhill test.

It is a constant endeavor to keep the power consumption of installed in the vehicle control units with the engine off as low as possible in order to protect the batteries. Since data must be exchanged between the multifunction key and the control unit installed in the vehicle for downhill checks, the radio link should also have a range of at least 20 meters. Only then can the downhill test be carried out, if the driver with the multi-function key, for example, in the area behind the vehicle or behind a

Trailer of the vehicle stops. Disclosure of the invention

Object of the present invention is a method for waking a receiver by a transmitter using the Bluetooth low energy radio technology, or for waking up a vehicle installed in a

To provide controller, wherein the method can be performed with a standard mobile terminal.

According to the invention for this purpose, a method for waking a receiver by a transmitter using the Bluetooth low energy radio technology

proposed. The method comprises at least the following steps: a) sending a message by the sender, the message having a

Sender address of the sender and a recipient address of the sender

to be addressed and additional information; and

b) receiving the message by the recipient; and

c) execute an action from the receiver, selected and determined in

Dependence on the additional information transmitted by the transmitter.

By means of this method, for example, a control unit installed in a vehicle can be woken up by means of the transmitter.

The transmitter can be a stationary or mobile device. The transmitter is preferably a mobile terminal, for example a smartphone or a tablet. The receiver is usually arranged in a vehicle, for example in or on a control device in the vehicle.

In step c), for example, an Ethernet connection to a control device within the vehicle, or to the outside to a server can be established.

Preferably, a method is provided for initiating a radio connection between the receiver and the transmitter, wherein the receiver is first woken up by the transmitter based on the method described above, and in

Step c) or a further step the radio connection between the Receiver and the transmitter is manufactured or started. In this case, a radio technology is selected and determined for the radio connection by means of the additional information transmitted by the transmitter in step a).

Furthermore, it is provided that both the receiver and the transmitter are in Bluetooth Low Energy (BLE) mode before and during the initiation of the radio connection. In BLE mode, the receiver is woken up by the transmitter. Subsequently, a radio connection is established in the radio technology, which was specified by means of the additional information in the BLE message from the sender.

The BLE radio technology is to be understood as the BLE mode or Bluetooth smart mode of the industry standard "Bluetooth." In particular, the invention relates to the Bluetooth standard as of specification 4.0 Electricity consumption and thus also with lower costs.

According to the method according to the invention, the transmitter wakes up the receiver and additionally determines the subsequent behavior of the receiver or predetermines the type of radio connection for it. Both are done while both transmitter and receiver are in BLE mode.

The BLE standard provides the following four BLE Advertising messages:

Connectable undirected advertising event (ADVJND):

This message will send an advertising message to all BLE recipients in range. After the advertising message, a BLE connection between the devices can then be established starting from the receiver.

Non-connectable undirected advertising event (ADV_NONCONN_IND):

This message will send an advertising message to all BLE recipients in range. The recipient of this message should not start a BLE connection setup attempt. - Scannable undirected advertising event (ADV_SCAN_IND):

This message will send an advertising message to all BLE recipients in range.

- Connectable directed advertising event (ADV_DI RECT_IND):

This message is used to send the message to exactly the BLE recipient whose BLE address is included in the Advertising message. All other recipients ignore this message.

In particular, the present invention relies on the BLE advertising message ADV_DIRECT_IND. According to the BLE standard, only the sender address and the recipient address are transmitted by the sender with this message. Only the BLE receiver with the corresponding BLE receiver address responds to this message. According to the present invention, this BLE advertising message ADV_DI RECT_IND is now extended by additional information. This additional information includes at least one command and / or data, whereby the receiver is informed of the radio technology to be used.

In order to address a particular device, for example to wake it up, the BLE advertising message ADV_DI RECT_IND is particularly suitable since this BLE advertising message contains the recipient address as well as the sender address. The two addresses can already be checked in the link layer of the Bluetooth / BLE chip without having to wake up the host chip. In contrast, to decrypt the data of the other BLE Advertising messages defined in the BLE standard, the host must be active. As a result, the power consumption increases, which is not desired according to the invention.

With the method, it is possible, expensive and separate devices, such as multifunction keys, by mobile devices, which are usually already in use, for the departure of a truck as well as for the "Wake" the truck or the truck provided for this purpose control unit to use.

With the method according to the invention, the truck or the control unit arranged in the truck can be specifically addressed by the transmitter.

By this is meant that of the transmitter exactly one vehicle

or a special controller selected and this can be awakened. After receiving the message transmitted by the transmitter, the receiver can set up a radio link between receiver and transmitter. The type of radio communication is inventively by means of in the

Message contained additional information provided by the sender. It is therefore not set to a predetermined connection variant.

However, this is possible with the method provided according to the invention. Furthermore, the mobile terminal as a transmitter both for waking up as well as for the subsequent data communication, for example the

Departure exam, to be used. Thus, no additional devices or transmitters are required for these two successive steps.

Preferably, in step c) the radio connection is started exclusively by the receiver with the receiver address transmitted by the transmitter in step a). Thus, only the addressed recipient with the transmitted recipient address is woken up.

The radio technology for the radio connection between the transmitter and the

Receiver is preferably determined exclusively by the transmitter. This information is encoded by the additional information and communicated to the recipient. The type of radio connection or the radio technology to be used is not specified or determined or selected by the receiver.

Furthermore, it is preferably provided that in step c) the

Radio connection is started directly in the radio technology specified by the transmitter. It is thus not necessarily provided that first and by default a BLE radio connection is established and then to a other radio technology is switched. It is also preferably provided that command information is coded with the additional information, the command information unambiguously defining the radio technology to be used for the radio connection. Particularly preferable are the following

Radio techniques provided:

BLE radio connection,

Bluetooth (BT) - radio connection,

WiFi access point, where the receiver is the WiFi access point, WiFi client, where the receiver is a WiFi client.

The command information can be several bytes or octets long. For example, the command information is 2 bytes long. With the command information, the radio technology to be used in the additional information, which is transmitted via the message from the sender to the receiver, encoded.

Furthermore, the additional information may include data. The data may be provided and transmitted in addition to the command information. For example, in the case of the WiFi client, the receiver can be told which WiFi access point the receiver should connect to. Also, instead of a command information only data could be transmitted. For example, the recipient could be told what is expected of him or what the recipient has to control.

The receiver preferably sets up a WiFi access point in step c), with additional or additional devices being able to connect to the receiver in addition to the transmitter. It is thus possible, for example, that the transmitter serves as a "door opener" for other devices, which connect via the receiver or the Wi-Fi access point attached by the receiver.

Preferably, the receiver activates a plurality of control devices in a vehicle based on the additional information in a step d). The

Receiver is assigned for this purpose a first control device in the vehicle. The sender wakes up this first controller. Subsequently, at least one further control device in the vehicle via this first control unit to be activated. For example, this can be at least one more

Be provided control unit for the execution of the downhill examination.

Furthermore, it is preferably provided that the additional information is a maximum of 26 bytes or a maximum of 26 octets long. Most preferably, the additional information is exactly 26 bytes long. The sender address and the receiver address are preferably 6 bytes and 6 octets, respectively. Thus, most preferably, the entire message transmitted by the transmitter to the receiver is at most 38 bytes, and most preferably exactly 38 bytes long. This is the same as the length of the other BLE standard advertising messages.

For further improvement, it is proposed that in this method the messages defined according to the invention are of the type: Advertising Event Type = Non-connectable Undirected Event (similar to ADV_NONCONN_IND). While the ADV_DIRECT_IN D are direct and connectable and the

ADV_NONCON N_IND are non-connectable to all but the messages defined according to the invention are directly but not konnektierbar.

This has the advantage that these messages are very well suited to wake up a system consisting of more than the BLE radio chip.

For further improvement, it is proposed that in this method, three new message types be defined for BLE Advertisement night views.

The first proposed BLE Advertisement message type is the

Advertising Event Type ADV_DI RECT_INSTRUCTION_IND. This type is similar to the ADV_DI RECT_IN D defined in the BLE standard, with the

Difference in that this message also contains information entered by the sender on the connection setup desired by the sender.

The second proposed BLE Advertisement message type is the

Advertising Event Type ADV_DIRECT_INSTRUCTION_DATA_IND. This type is similar to the ADV_DIRECT_IN D defined in the BLE standard, with the The difference is that this message also contains information data entered by the sender to establish a connection as well as supplementary information. The third proposed BLE Advertisement message type is the

Advertising Event Type ADV_DIRECT_DATA_IND. This type is similar to the ADV_DIRECT_IND defined in the BLE standard, with the difference that this message also contains information data entered by the sender. The newly proposed message types are preferably from the BLE

Advertising Event Type Non-connectable and directed event. The definition Non-connectable specifies that a BLE connection should not be established directly upon receipt of the message. The BLE Advertising Event Type Connectable and directed Event is also usable.

According to the invention, a data communication system for the

Carrying out a method for initiating a radio link between a transmitter and a receiver by means of the Bluetooth Low Energy (BLE) radio technology according to a method described above.

The data communication system has for this purpose the transmitter and the receiver. The transmitter can be designed as a mobile terminal, for example as a smartphone or as a tablet. The receiver can be designed as a control unit or arranged on a control unit or integrated into a control unit. The controller is a vehicle, such as a truck

assigned or arranged in this. Furthermore, the

Data communication system further control devices, which can be activated by the first control device.

Brief description of the drawings

In the following the invention will be further explained by means of embodiments in the figures. Herein show: Figure 1: a data communication system with a transmitter and arranged in a vehicle

Receiver; and

Figure 2: essential steps of a method for initiating a radio link between Send

Receiver; and

Figures 3a, 3b and 3c: different configurations of a message to be transmitted from the transmitter to the receiver.

Detailed description of the drawings

Figure 1 shows a data communication system 100 with a transmitter 11 and a receiver 12. The transmitter 11 is designed as a mobile terminal, namely as a smartphone or tablet. The receiver 12 is integrated in a first control unit 101. The first control unit 101 is arranged in a vehicle 200, namely a truck. Furthermore, a second control device 102 is arranged in the vehicle 200. The second control device 102 can be activated by the first control device 101.

The data communication system 100 serves, on the one hand, to wake up the vehicle 200 or the first control unit 101 arranged in the vehicle 200. Furthermore, the departure test can also be carried out with the data communication system 100. For this purpose, the second control device 102 can be activated after the initiation of the radio link 10 between transmitter 11 and receiver 12.

Figure 2 shows the essential steps of a method for initiating a radio link 10 between the transmitter 11 and the receiver 12 by means of the BLE radio technology. In a first step Sl, a message 13 is sent to the receiver 12 by the transmitter 11. The message has the sender address 14, the recipient address 15 and additional information 16. In a second step S2, the message is received by the receiver 12. In this case, only the receiver 12 reacts with the corresponding recipient address 15.

In a third step S3, the radio link 10 between the transmitter 11 and the receiver 12 is started by the receiver 12, wherein the radio technology to be used for the radio link 10 is selected by means of the additional information 16 transmitted by the transmitter 11 in step S1.

FIGS. 3 a to 3 c show different configurations for the message 13 to be transmitted from the transmitter 11 to the receiver 12. Common to all embodiments that the message 13 has both the sender address 14 and the receiver address 15. The additional information 16, as shown by way of example in FIG. 3 a, may have only one command, by means of which the receiver 12 is informed of the radio technology to be used.

Figure 3b shows a variant, wherein the additional information 16 has both a command and additional data. This allows the receiver 12, for example, in the event that it acts as a WiFi client to communicate with which Wi Fi access point to connect the receiver 12, once the WiFi client has been activated.

FIG. 3c shows a variant wherein the additional information 16 contains only data and no command.

Claims

claims

1. A method for waking up a receiver (12) by a transmitter (11)

by means of the Bluetooth low energy radio technology, the method having at least the following steps:

a) sending a message (13) by the transmitter (11), the message (13) a transmitter address (14) of the transmitter (11) and a receiver address

(15) of the recipient to be addressed (12) and additional information (16) includes; and

b) receiving the message (13) by the receiver (12); and

c) performing an action by the receiver (12), selected and determined in dependence on the additional information transmitted by the transmitter (11)

(16).

2. A method for initiating a radio link (10) between the transmitter (11) and the receiver (12) by means of the Bluetooth low energy radio technology, wherein the receiver (12) is woken up by the transmitter (11) according to a method according to claim 1,

characterized,

that in step c) or a further step, the radio link (10) between the transmitter (11) and the receiver (12) is started, wherein a radio technology for the radio link (10) by means of the in step a) from the transmitter (11) transmitted additional information (16) is selected and determined.

3. The method according to claim 2,

characterized,

in step c) the radio connection is started exclusively by the receiver (12) with the receiver address (15) transmitted by the transmitter (11) in step a).

4. The method according to claim 2 or 3,

characterized,

the radio technology for the radio connection (10) between the transmitter (11) and the receiver (12) is determined exclusively by the transmitter (11), coded by the additional information (16) and communicated to the receiver (12).

5. The method according to any one of claims 2 to 4,

characterized,

in step c) the radio connection (10) is started directly in the radio technology predetermined by the transmitter (11).

6. The method according to any one of claims 2 to 5,

characterized,

command information is coded with the additional information (16), the command information being used for the radio connection (10)

Radio technology clearly defined.

7. The method according to any one of claims 2 to 6,

characterized,

the additional information (16) contains data.

8. The method according to any one of claims 2 to 7,

characterized,

the receiver (12) sets up a WiFi access point in step c) and connects further devices to the receiver (12) in addition to the transmitter (11).

9. The method according to any one of claims 2 to 8,

characterized,

that the receiver (12) in a step d) based on the additional

Information (16) a plurality of control devices in a vehicle (200) activated.

10. The method according to any one of claims 2 to 9,

characterized,

that the additional information (16) is a maximum of 26 bytes long.

11. Data communication system (100) for carrying out a method for initiating a radio link (10) between a transmitter (11) and a receiver (12) by means of the Bluetooth low energy radio technology according to one of the preceding claims.