Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W24/00—Supervisory, monitoring or testing arrangements
  • H04W24/06—Testing, supervising or monitoring using simulated traffic
• • 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
  • H04L43/50—Testing arrangements
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W84/00—Network topologies
  • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor 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
  • H04W88/18—Service support devices; Network management devices

Definitions

• the invention relates to a method for checking the compliance of a Bluetooth device to be tested, in which the interface of the "Logic Link Control and Adaptation Protocol" (L2CAP) to higher layers of the Bluetooth protocol stack is tested by placing the L2CAP in a test mode brought so that certain messages for higher layers are redirected to a test device.
• the invention further relates to an arrangement for checking the compliance of a Bluetooth device, with which the interface of the L2CAP to higher layers of the Bluetooth protocol stack is tested by placing the L2CAP in a test mode with a Bluetooth device to be tested and a test device, with certain messages being redirected to a test device in the test mode for higher layers.
• Bluetooth compliance test a compliance test
• the Bluetooth standard is defined in "BLUETOOTH SPECIFICATION Version 1.0 B”.
• the Bluetooth compliance test is intended to ensure that the devices are able to communicate with other Bluetooth products without errors. Part of this test tests the error-free implementation of the "Logic Link Control and Adaption Protocol" (L2CAP).
• L2CAP Logic Link Control and Adaption Protocol
• the protocols involved in Bluetooth communication have a layer structure, so that a Bluetooth protocol stack is formed overall. In the compliance test for the L2CAP, the interface of the L2CAP to higher layers of the Bluetooth protocol stack is checked with a test device. In order to make this possible.
• L2CAP are brought into a test mode, in this test mode messages which are in themselves for higher layers of the Bluetooth protocol Stack are determined, redirected so that they are transmitted to the test device instead of to the higher layers of the Bluetooth protocol stack. The test device is then able to verify the correct implementation of the L2CAP.
• test mode can be implemented by appropriately configuring the hardware, for example using switches, jumpers, plugs or similar components. It is also conceivable to implement the test mode by means of an appropriate input via a user interface. These solutions are problematic. A hardware solution is expensive because in this case all devices must have the special hardware components. A solution to the input via the user interface first requires the existence of such an interface. Furthermore, it would be necessary to prevent unintentional entry into the test mode, which also entails an undesirable effort.
• the invention is therefore based on the task of enabling the transition to a test mode for the L2CAP, the effort required for this to be minimized.
• the invention builds on the generic method in that the L2CAP is brought into the test mode by a Bluetooth message. In this way, layers above the L2CAP including a user interface are unnecessary. borrowed. Additional hardware components are also unnecessary. Rather, on the basis of the invention, the message intended for the test device can be sent by any Bluetooth device which has the ability to generate such a message.
• An "Asynchronous Connection-Less" message (ACL message) is preferably set up from a second Bluetooth device to the Bluetooth device to be tested, and the Bluetooth message is sent via the ACL connection.
• An ACL message is preferably set up from a second Bluetooth device to the Bluetooth device to be tested, and the Bluetooth message is sent via the ACL connection.
• Connection enables packet data exchange between two Bluetooth devices.
• SCO connections synchronous connection-oriented connections
• L2CAP specification is only defined for ACL connections and no support for SCO connections is planned, it is advisable to set up an ACL connection to transmit the test message.
• the ACL connection is preferably cleared again after the message has been sent, and the L2CAP remains in the test mode.
• the Bluetooth device to be tested can advantageously be tested in any way by the test device, regardless of the ACL connection between the Bluetooth devices.
• test mode is ended by sending a further message.
• the device to be tested can therefore be switched between the test mode and the normal operating mode without completely resetting its functions.
• the further message is a Bluetooth message.
• the test mode can therefore be switched off and the transition to the normal operating mode can be carried out, for example, by the same Bluetooth device that previously set the test mode.
• the message is a special L2CAP message. Such a message with a special structure would therefore only be used to transfer the device to be tested into test mode, which prevents the Bluetooth device to be tested from accidentally entering test mode.
• connection request packet (Connection Request
• Connection request packets are sent out in order to create a channel between two Bluetooth devices.
• a connection request packet is particularly suitable for integrating the message for setting up the test mode.
• the message is implemented by a free "Protocol / Service Multiplexer” value (PSM value) of a connection request packet.
• PSM value a free "Protocol / Service Multiplexer” value
• the PSM data field is a component of the connection request package and is therefore suitable for accommodating the message which causes the transition to test mode.
• the invention is based on the generic arrangement in that a second Bluetooth device is provided for transmitting a Bluetooth message and for transferring the L2CAP to the test mode.
• a second Bluetooth device is provided for transmitting a Bluetooth message and for transferring the L2CAP to the test mode.
• layers above the L2CAP including a user interface are not required. Additional hardware components are also unnecessary.
• the message intended for the test device can be sent by any Bluetooth device which has the ability to generate such a message.
• the message is a special L2CAP message. Such a message with a special The structure would therefore only be used to transfer the device to be tested into test mode, thereby preventing the Bluetooth device to be tested from accidentally entering test mode.
• connection Request Packet a connection request packet of the L2CAP.
• connection request packets are sent out to create a channel between two Bluetooth devices.
• a connection request package is particularly suitable for integrating the message to set up the test mode.
• the invention is based on the surprising finding that a test mode for an L2CAP compliance test can be provided without influencing the device hardware and without using the user interface parts.
• a test mode for an L2CAP compliance test can be provided without influencing the device hardware and without using the user interface parts.
• Figure 1 schematically shows a configuration for performing the method according to the invention.
• the Bluetooth device 110 is a Bluetooth device under test ("Device Under Test" (DUT)).
• the Bluetooth device 210 is any Bluetooth device that is able to communicate with the Bluetooth device 110 to be tested.
• the structure of the Bluetooth protocol stack of the Bluetooth device 110 to be tested is shown below.
• the Bluetooth protocol stack has a baseband 114 as the bottom layer.
• the link control and adaptation protocol (L2CAP) 112 is arranged above the baseband.
• L2CAP link control and adaptation protocol
• LMP Link Manager Protocol
• the “Link Manager Protocol” 116 is used for connection establishment and connection control.
• the network layer 118 is located in the layer above the L2CAP 112 and the LMP 116.
• Protocols of higher layers or applications 120 are in turn located above this network layer 118.
• the Bluetooth device 210 is constructed in the same way, that is to say with the layer sequence baseband 214, L2CAP 212 and LMP 216, network layer 218, protocols of higher layers or applications 220.
• the physical connection takes place in the communication between the Bluetooth devices 110, 210 Communication 12 between the baseband 114 of the Bluetooth device 110 and the baseband 214 of the Bluetooth device 210 takes place.
• Bluetooth device 110 is now to be tested, a test device 10 is used for this purpose.
• a Bluetooth message is transmitted from the Bluetooth device 210 or from any other Bluetooth device which has the corresponding capabilities to the Bluetooth device 110 to be tested.
• This Bluetooth message places the Bluetooth device 110 or the L2CAP 112 in the test mode, so that the communication of the L2CAP 112 with higher layers is redirected to the test device 10.
• the Bluetooth message from the Bluetooth device 210 is transmitted such that an ACL connection is established and that the Bluetooth message is sent via the ACL connection.
• the ACL connection can be cleared down again, although the L2CAP 112 of the Bluetooth device 110 to be tested remains in the test mode and is therefore able to communicate with the test device 10.
• the test mode is only switched back to a normal operating mode by the Bluetooth device 210 or any other Bluetooth device again sending a corresponding Bluetooth message.
• the Bluetooth message can be such that a special L2CAP signal command is provided for this, although standardization would have to be carried out for this.
• a way of transmitting the Bluetooth message without such standardization is possible by "hiding" the message in another standardized command.
• This could be, for example, a connection request packet ("Connection Request Packet") from L2CAP, in which case the message is implemented by a free PSM value ("Protocol / Service Multiplexer").

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• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Signal Processing (AREA)
• Mobile Radio Communication Systems (AREA)
• Maintenance And Management Of Digital Transmission (AREA)
• Small-Scale Networks (AREA)

Applications Claiming Priority (3)

Publications (1)

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Family Applications (1)

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• 2000
  • 2000-09-13 DE DE10045243A patent/DE10045243A1/de not_active Withdrawn
• 2001
  • 2001-08-31 US US10/380,747 patent/US20040042407A1/en not_active Abandoned
  • 2001-08-31 EP EP01967057A patent/EP1317838A1/de not_active Withdrawn
  • 2001-08-31 WO PCT/DE2001/003342 patent/WO2002023858A1/de not_active Application Discontinuation
  • 2001-08-31 JP JP2002527172A patent/JP2004509525A/ja active Pending

Non-Patent Citations (1)

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