Field of the Invention
[0001] The present invention relates to an arrangement and a method for detection and/or
identification of components and in particular to an arrangement and a method for
detection and/or identification of passive components detachably connected to an electronic
device.
Description of Related Art
[0002] The trend for constructing and managing complex systems is going towards principles
of automatisation where possible, self testing possibilities, error detection mechanisms,
remote system administration, reduced people's work for installing and maintaining
the system. For example for new mobile telecommunication systems, the topic "Self
Organising Networks" and "Self-Configuration" are highly requested for by the network
operators and it is an recently emerged topic e.g. in the 3GPP standardisation.
[0003] Technical equipment does usually have several detachable cable connections, like
electrical cables and/or tubes. As a concrete example, a radio-network basestation
has many cables connected to it, including special, typically expensive cables like
large antenna cables.
[0004] While remote functional reporting and testing features are state of the art for specific
elecrical units, like e.g. 'computer' boards, these features are on the other hand
nowadays not available for i.e. passive components having no internal processing (ID-reporting)
capabilities.
[0005] The knowledge about which components -including cables- are precisely installed at
e.g. an eNB (evolved Node B) site, supports self-configuration and optimisation of
the system, and facilitates to manage a telecommunication system. For example, it
would be very helpful for a technician to know in advance which "field replaceable
units" pecisely are located at a certain eNB site before he drives into the field
for maintenance or repair, so that he knows which spare parts to bring. In particular
passive components, like cables, do not yet have such remotely readable identifiers.
[0006] Some of those basestation cables are very expensive, and for the maintenace aspects
it would be useful to know exactly which concrete cable (including length, and additonal
information like e.g. protection against animal damage) may need to be replaced.
[0007] This identification of cable connections also allows to check whether all cable connections
are put together correctly during installation of the equipment. Possible human plugging-together-errors
are detected immediately.
[0008] Furthermore, cable connections are subject to failure when they start getting loose
- this startened loosening is usually not detected before the connection separates
completely and thus could lead to a failure of the complete system. It would be nice
to have a means to detect possible problems in time, so that it can be repaired -like
fastening the connection- before the equipement fails.
Summary of the Invention
[0009] It is therefore an object of the present invention to provide an arrangement and
a method being able to detect and/or to identify components, in particular passive
components which are detachably connected to an equipment, in particular to an electronic
device.
[0010] Thus, it is a basic idea of the present invention in order to detect and/or identify
a component to send an optical beam or some kind of electromagnetic beam including
infrared light beam and UV light beam from e.g. a backplane of an equipment or device
to the component. At or inside this component the received optical or electromagnetic
beam is coded with a signal and then sent or reflected back to the backplane of the
device where the reflected optical or electromagnetic beam is received and where the
information determined by the code is detected and can be further processed like e.g.
transmitting a detected component identification information to a remote operation
and maintenance (O&M) centre.
[0011] The above object is, according to a first important aspect of the invention, solved
by an arrangement for detection and/or identification of components detachably connected
to an electronic device, said arrangement comprising: first electromagnetic beam emitting
means arranged at or in the device and adapted to emit and direct a first electromagnetic
beam from the device to a component to be detected and/or identified; first electromagnetic
beam receiving means arranged at or in the component and adapted to receive the first
electromagnetic beam from the device; coding means arranged at or in the component
and adapted for coding the received first electromagnetic beam with a code according
to component's information; second electromagnetic beam emitting means arranged at
or in the component and adapted to send a second electromagnetic beam coded according
to the coding by the coding means from the component to the device; second electromagnetic
beam receiving means arranged at or in the device and adapted to receive the coded
second electromagnetic beam sent from the component, and processing means arranged
at or in the device and /or a location remote from the device and adapted for processing
the coded second electromagnetic beam for decoding the information from the code thereof.
[0012] In a preferred embodiment of the present arrangement, the component is an electrically
passive component like a cable plug or a plug connector not including active circuit
elements, such as diodes or transistors. Otherwise, it may well be provided with active
circuit elements and a supply voltage by means of supply voltage wiring within the
cable plug or plug connector.
[0013] As already mentioned above, the electromagnetic beam may preferably comprise an optical
beam including infrared and UV beams.
[0014] According to a further embodiment, the second electromagnetic beam emitting means
may be an optical beam reflector arranged in the passive component, e.g. a plug connector,
said optical beam reflector being preferably arranged adjacent to a wall of the device
in the plugged-in condition of the plug connector and in parallel or in a predefined
angle to said wall. The light reflector may in particular comprise one or a plurality
of reflective surfaces arranged in the passive component.
[0015] According to an advantageous development, the code of the coding means may be dedicated
to the respective component or component's type at or in which the coding means are
arranged.
[0016] According to a further embodiment, the coding means may be adapted to change the
code according to an actual condition of the component or of the component in its
relation to the device. Such an actual condition of the component may comprise at
least one of the following conditions, namely an electrical condition, a mechanical
condition (such as an incorrect locking of the cable connector at or in its socket),
an environmental condition, a material condition and/or a condition based on a physical
effect. Depending on the sensitivity of the processing of the received signal at the
second light receiving means, it may be possible to detect when the received optical
signal is changing which gives an indication that something may be problematic with
that cable connection. Then a concrete hint can be given to the technician to look
at and check especially that socket+plug connection, e.g. when he is at the eNB site
anyway.
[0017] According to a second important aspect, the present invention for solving the above
object provides a method for detection and/or identification of components detachably
connected to an electronic device, said method comprising the steps of: emitting a
first electromagnetic beam from the device to a component to be detected and/or identified;
receiving at or in the component the first electromagnetic beam from the device; coding
at or in the component the received first electromagnetic beam with a code according
to component's information; sending a second electromagnetic beam coded according
to the coding by the coding means from the component to the device; receiving at or
in the device the coded second electromagnetic beam sent from the component, and processing
at or in the device and /or a location remote from the device the coded second electromagnetic
beam for decoding the information from the code thereof.
[0018] Further important aspects of the present invention are a base station of a communication
network, an O&M center of a communication network and a communication network all
of which comprise the inventive arrangement.
[0019] The present invention thus can be used for supporting the operation and maintenance
(O&M) of telecommunications helping to make those complex systems more easily manageable
with less costs and with less people's work. However, those persons skilled in the
art and having studied the present specification are recognizing that obviously the
present invention applies to many other technical fields beyond telecommunication
systems.
[0020] One advantageous effect achieved by the present invention is that the cable plug
or plug connector needs no extra pins as it is the case in a coaxial connector. The
optical detection/ identification approach is also very robust with respect to electromagnetic
interference problems especially in antenna cables of an RF transmitter where the
close environment of the connector is disturbed by insufficient insulation or insufficient
shielding against HF energy.
Brief Description of the Drawings
[0021] In the following description a number of exemplary embodiments of an inventive arrangement
for detection and/or identification of components detachably connected to an electronic
device will be described in detail with reference to the following figures, wherein:
- Fig. 1
- schematically depicts a side view of a first exemplary embodiment of an arrangement
according to the present invention;
- Fig.2
- schematically shows a side view of a second exemplary embodiment of an arrangement
according to the present invention;
- Fig. 3
- schematically depicts a side view of a third exemplary embodiment of an arrangement
according to the present invention, and
- Fig. 4
- schematically depicts a side view of a fourth exemplary embodiment of an arrangement
according to the present invention.
- Fig.5
- schematically depicts a side view of a fifth exemplary embodiment of an arrangement
according to the present invention
[0022] Despite the fact that the present invention may be applied to a variety of technical
fields including equipment other than electronic devices, the embodiments of the invention
described in the following with reference to the figures listed above are applied
to an arrangement for detection and/or identification of components detachably connected
to an electronic device, said arrangement comprising: first electromagnetic beam emitting
means arranged at or in the device and adapted to emit and direct a first electromagnetic
beam from the device to a component to be detected and/or identified; first electromagnetic
beam receiving means arranged at or in the component and adapted to receive the first
electromagnetic beam from the device; coding means arranged at or in the component
and adapted for coding the received first electromagnetic beam with a code according
to component's information; second electromagnetic beam emitting means arranged at
or in the component and adapted to send a second electromagnetic beam coded according
to the coding by the coding means from the component to the device; second electromagnetic
beam receiving means arranged at or in the device and adapted to receive the coded
second electromagnetic beam sent from the component, and processing means arranged
at or in the device and /or a location remote from the device and adapted for processing
the coded second electromagnetic beam for decoding the information from the code thereof,
wherein in the described embodiments the component is represented by a passive component
in form of a cable plug which is connected to a socket on a backplane of an electronic
device, like for example an expensive coaxial antenna cable attached to a backplane
of an eNB.
[0023] In the embodiments described below the electromagnetic beam is implemented as an
optical beam including visible light, infrared light or UV light, and as a result,
the first and second electromagnetic beam emitting means and the first and second
electromagnetic beam receiving means are respectively implemented as first and second
light emitting means and first and second light receiving means. Further in the exemplary
embodiments described below, the component is represented by a cable plug which is
connected to a socket on a backplane of an electronic device.
[0024] Further, in the first to fifth embodiment described below, the exemplary cable plug
may be implemented as an electrically passive component, not having electrically active
circuit elements, such as supply voltage wiring, transistors and diodes, while the
cable plug according to the fifth embodiment may also be implemented as an active
component which is arranged to actively change the code of the coding means according
to certain conditions of the component, i.e. the cable plug or according to its relation
to the device.
[0025] Referring to the first embodiment schematically depicted in Fig. 1, first light emitting
means, in the example a plurality of light sources 21, 22 ( for simplification, Fig.1
only shows first and second light sources 21, 22, e.g. a first and second laser diode)
is located in an electronic device 1, e.g. behind a back plane of an eNB. The first
light emitting means 21 and 22 are configured to emit and direct a plurality of preferably
parallel light beams (for simplification, Fig.1 shows only a couple of first light
beams I
11, I
12) towards a component, in the example a cable plug 10 to be detected and/or identified.
It should be understood that there is also the possibility to use e.g. transparent
fibers as "light guiding means" in order to place the light sources 21 and 22 at any
location in a housing of the electronic device 1 if the space directly at the socket
of the connector should be limited. First light receiving means, in the example a
light reflecting surface 11 is arranged in the optical path of the first light beams
I
11, I
12 and configured to receive and reflect the first light beams I
11, I
12 at the site of the component 10.
[0026] Further, the component 10 includes coding means 13 configured for coding the received
first light beams I
11, I
12. As an example, the coding means 13 may be implemented as a small transparent and/or
reflective object which allows some coding of the light information. In particular
this coding means 13 can be a small piece of glass or transparent plastic which is
built at the side of the component 10. Depending on the concrete geometrical design,
this piece of glass or transparent plastic can transmit the light or reflect the light
according to the specific coding thereof. To achieve this specific coding, the transmission
or reflection can be inhibited by marking the surface of this glass or plastic piece.
For example the marking could be achieved by making the surface rough in such a way
that the glass or plastic piece is no longer reflective or transparent at a particular
location. This marking may most easily be achieved by burning or scratching the former
smooth surface of the transparent glass or plastic piece with a laser during production
of the small transparent glass or plastic piece or during production of e.g. the cable
plug 10.
[0027] Further according to the first embodiment depicted in Fig. 1, the component 10 includes
second light emitting means 12 , implemented as light reflecting means similar to
the first light receiving means 11 and configured to send a plurality of second light
beams (for simplification, Fig. 1 shows only a couple of second light beams I
21 and I
22) coded according to the coding of the coding means from the component 10 towards
the device 1.
[0028] A second light receiving means 3, e.g. a photo detector is arranged at or in the
device 1 and configured to receive the coded second light beams I
21 and I
22 sent from the second light emitting means 12 at the component's 10 site.
[0029] A processing means 5 is arranged at or in the device 1 and/or at a location remote
from the device 1 and configured for processing the coded second light beams I
21, I
22 to determine information represented by the code. The possibility of arranging the
processing means 5 at a remote location is indicated by an interrupted line between
the second light receiving means 3 and the processing means 5.
[0030] There are many different ways to achieve a coding of different information inside
of the component 10 or, as mentioned above in or on the small transparent piece of
glass or plastic. Basically the coding exploits spatial and/or spectral diversity
of the information:
- as indicated in Fig. 1 several light beams can be sent into the component 10, some
of these are reflected and some are not. In addition to the marking of a transparent
material whether it is reflective at a certain location or not, a small piece of mirror-like
material or a material with different reflective properties (white or black color)
may be inserted instead of the transparent glass or plastic piece. In this particular
scenario, no additional material at all may be inserted, if the reflective coding
is put directly on the connector, that is; the passive component 10 itself, like adding
a small piece of paint, metallization or color marking.
- The transparent material itself in the passive component 10 can be coded with colors,
like color plastic or doped glass. The photo detector 3 on the device's side is then
able to distinguish the colors or dopants in the glass and/or that certain frequencies
are attenuated.
- A directed light beam which contains several frequencies (e.g. white light) or the
beam of a tunable laser is widened into its spectrum at a tilted transparent surface
between different transparent materials with a different dielectric constant (like
between air and the material at a prisma). Different frequencies are refracted with
different angles, and after being widened the different colored light is then either
reflected or not.
- A further coding method may be the implementation of a time division multiplexing,
wherein the light beams are encoded bitwise and time-sequentially sent one after the
other either starting after one trigger or starting after the occurrence of a connector
plug-external effect. In the latter case, e.g. a ramp-up of the light source triggers
the read-out of each bit, as the trigger level for each bit is set to a different
value. All this is achieved with a non-linear physical effect.
- A further encoding method may be implemented by modifying the polarization of the
light beams to encode the bits.
[0031] It is further possible to combine the above different coding methods to increase
the amount of coding information without spending much effort for too much precision
into a single method.
[0032] Even if the intended purpose of the coding method is to provide a simple and cheap
way for coding, in case it would require much effort to increase e.g. the spatial
resolution in one direction but still more coding information is needed, then it could
be the simplest way to use a further dimension, like e.g. a second spatial direction,
i.e. x+y-coding or a colored glass, or encoding by a hologram. It is to be noted that
in general only a low amount of coding information is necessary in order to detect
or identify uniquely the installed component. Mostly it is already clear that due
to mechanical dimensions only an antenna cable can be attached to a certain socket
and then the coding information needs only to distinguish maybe the length and the
type (material, series) of the cable. That is, it is not necessary to have a worldwide
unique identification.
[0033] If however in certain scenarios it is desirable to change the code according to an
actual condition of the component, such as an electrical condition, a mechanical condition,
an environmental condition a material condition and/or a condition based on a physical
effect of the component, the coding means may be configured to change the code, and
the processing means 5 in this case may be configured to detect or identify the change
of the code and discriminate therefrom the condition of the component.
[0034] The second embodiment of the arrangement according to the invention depicted in Fig.
2 has many similarities with the first embodiment depicted in Fig. 1. However the
second embodiment differs from the first one described above in that the first light
emitting means 2 only comprise a single light source and are configured to emit a
single light beam I
1 towards the component 10. Further the first light receiving means 11 and the second
light emitting means 12 on the component's side are combined and implemented as a
single reflecting plane. The coding means 13, the second light receiving means 3 and
the processing means 5 may be arranged and configured in a similar manner as it is
done in the first embodiment according to Fig. 1. Further the same principle different
ways to achieve a coding as described above may be employed in the second embodiment
according to Fig. 2.
[0035] The third embodiment of the present arrangement depicted in Fig. 3 uses as the first
light receiving means 11 a tilted transparent surface of a prism having a different
dielectric constant as compared to the surrounding medium. The first light beam I
1 emitted from the first light emitting means 2 contains several wavelengths and is
widened into its spectrum at the tilted transparent surface 11. Different wavelengths
are refracted with respectively different angles as simply indicated by the two refracted
light beams I
11 and I
12, the prism thus forming the coding means 13. After being widened, the refracted light
beams I
11 and I
12 having different wavelengths are reflected at different locations of a reflective
surface of the prism, serving as the second light emitting means 12, the different
colored light forming e.g. a couple of second light beams I
21, I
22 which are received by the second light receiving means 3 on the device's side and
can be processed by the processing means 5.
[0036] As schematically depicted in Fig. 4, the fourth embodiment of the present arrangement
shows that the inventive arrangement can also be used for a plurality of components,
e.g. several cable plugs 101, 102, 103 as plugged in on one plane of the device 1.
In this case it is possible to use the second light receiving means 3 and the processing
means 5 in common for all identification purposes together. In the exemplary embodiment
depicted in Fig. 4 all cable plugs 101, 102, 103 are illuminated by different dedicated
first light emitting means or light sources 21, 22 and 23 each configured for emitting
a first light beam I
11 towards the cable plugs 101, 102, 103, possibly having different wavelengths. These
cable plugs have for example similar construction as the cable plugs in the embodiment
depicted in Fig. 2. It may be possible that the different first light emitting means
21, 22 and 23 can be separately switched on and off. Via light guides, e.g. optical
fibers 41, 42, 43, the second light beams I
2 emitted from the different cable plugs 101, 102, 103 are guided towards a common
second light receiving means 3, e.g. a light detector which is configured to distinguish
the wavelengths of the second light beams I
2. From the second light receiving means 3 the frequency information can be transmitted
to the processing means 5 and there processed to get the component's identification.
[0037] In certain scenarios it is desirable to change the code according to an actual condition
of the component or according to a condition of the component in relation to the device.
Such component condition may be for example an electrical condition, a mechanical
condition, an environmental condition, a material condition, and/or a condition based
on a physical effect of the component. In these cases, the cable connector may comprise
active circuit elements such as supply voltage wiring as well as transistors or diodes.
Further, the component may comprise at least one sensor element, and the coding means
may be configured to change the code according to a value sensed by the sensor element.
The processing means in this case may be configured to detect or identify the change
of the code and discriminate thereof the condition of the component. The sensing effect
of the sensor element may be a pure physical effect, like a mechanical deformation
of a bi-metal, an alteration of a direction of an optical axis for example by deflecting
or scattering an optical beam at an optical element, etc.
[0038] Examples of possible modification of the code are provided as follows: When the connector
plug 10 is loosening, then the distance between the device 1 and the component, i.e.
the connector plug 10 and/or the angle of reflection is altered. This modifies the
back-reflected light beam which can be detected by the device 1 and/or by the processing
means 5. Further, overheating and thus thermal expansion can also alter the back-reflected
light. Further, a wrong position of the connector plug 10, attached to the wrong socket
or wrong device 1 is immediately detected.
[0039] In cases mentioned above where the connector plug 10 includes supply voltage and/or
active circuit elements, then the connector plug 10 may easily be provided with its
own intelligence to modify the code according to the above conditions.
[0040] The fifth embodiment of the present arrangement as schematically depicted in Fig.
5 has some similarities with the third embodiment depicted in Fig. 3, and those parts
which are identical in both embodiments are designated by respectively equal reference
signs. However, in contrast to the third embodiment, the fifth embodiment includes
an additional sensor means 14 that are configured to modify the code of the coding
means 13. Examples for an explicit sensor could be: a) a temperature sensor, e.g.
a bi-metal which is configured to mechanically move a part of the light reflecting
mirror surface 12; b) a moisture sensor configured to directly affect the reflective
properties of the light reflecting mirror surface; c) a mechanical sensor configured
to check if the connector plug is locked mechanically (e.g. bajonet lock closed);
d) a means configured to read out if the connector plug has a blown fuse; e) an electromagnetic
field sensing means configured for sensing if an electromagnetic field is present,
e.g. by a crystal that modifies its optical properties in the presence of an electric
or magnetic field (caused by voltage, current or power). The latter method may also
provide means for detecting what's going on inside the cable connected to the connector
plug, i.e. to detect if a transmitter is injecting RF power in an antenna cable.
[0041] The advantage of providing an electromagnetic field sensing element in the connector
plug (in addition to the static cable or connector type encoding) is a cheaper way
than adding an extra detection device somewhere else in the device or system and provides
a kind of alive check of the cable.
[0042] It is obvious from the above description of the present arrangement that the present
invention also encompasses a method for detection and/or identification of components
detachably connected to an electronic device, said method comprising the steps of:
emitting a first electromagnetic beam from the device to a component to be detected
and/or identified; receiving at or in the component the first electromagnetic beam
from the device; coding at or in the component the received first electromagnet beam
with a code according to component's information; sending a second electromagnetic
beam coded according to the coding by the coding means from the component to the device;
receiving at or in the device the coded second electromagnetic beam sent from the
component, and processing at or in the device and /or a location remote from the device
the coded second electromagnetic beam for decoding the information from the code thereof.
[0043] The present invention may be further embodied by a base station for a communication
network, said base station comprising the arrangement for detection and/or identification
of components as described above and further embodied by a communication network comprising
the above described arrangement for detection and/or identification of components,
and by an O&M center for a communication network comprising at least the processing
means of the arrangement described above.
[0044] As can be clearly derived from the above description the present invention in particular
has in particular the following advantages:
- only a small space is required to integrate the means at the component's side into
or to existing passive components, such as a cable plug and to integrate the means
at the device's side at or near the socket of the cable plug - next to the other connections
for which the cable plug has been built;
- the arrangement of the present invention achieves a low-cost solution which is easy
and cheap to produce and to integrate into a system;
- automatic verification is possible that all connections are correct, i.e. the correct
cable at the correct place and that the cable connection itself is fastened;
- the processing means can be remotely provided, e.g. in an O&M center so that this
O&M center can remotely read which equipment and parts are concretely installed e.g.
at a base station site and a service technician can precisely know what to bring into
the field - this remote detection is also one of specified requirements for an eNB;
- when the connection of a cable plug is loosening, then the reflected light beam changes,
which change can be detected. Thus, an early warning can be given to check this connection
before the cable connection and thus possibly the complete system fails.
1. An arrangement for detection and/or identification of components (10, 101, 102 ,103)
detachably connected to an electronic device (1), said arrangement comprising:
- First electromagnetic beam emitting means (21 to 23) arranged at or in the device
(1) and adapted to emit and direct a first electromagnetic beam (I1, I11, I12) from the device (1) to a component (10, 101, 102 ,103) to be detected and/or identified;
- First electromagnetic beam receiving means (11) arranged at or in the component
(10, 101, 102 ,103) and adapted to receive the first electromagnetic beam (I1, I11, I12) from the device (1);
- Coding means (13) arranged at or in the component (10, 101, 102 ,103) and adapted
for coding the received first electromagnetic beam (I1, I11, I12) with a code according to component's information;
- Second electromagnetic beam emitting means (12) arranged at or in the component
(10, 101, 102 ,103) and adapted to send a second electromagnetic beam (I2,I21,I22) coded according to the coding by the coding means (13) from the component (10, 101,
102 ,103) to the device (1);
- Second electromagnetic beam receiving means (3) arranged at or in the device (1)
and adapted to receive the coded second electromagnetic beam (I2, I21, I22) sent from the component (10, 101, 102 ,103), and
- Processing means (5) arranged at or in the device (1) and /or a location remote
from the device (1) and adapted for processing the coded second electromagnetic beam
(I2, I21, I22) for decoding the information from the code thereof.
2. The arrangement as claimed in claim 1, wherein the component (10, 101, 102 ,103) is
an electrically passive component.
3. The arrangement as claimed in claim 2, wherein the component (10, 101, 102 ,103) is
a plug connector.
4. The arrangement as claimed in claim 3, wherein the second electromagnetic beam emitting
means (12) is a electromagnetic beam reflector of the plug connector (10, 101, 102,
103), in particular arranged at a wall adjacent to a wall of the device (1) in a plugged-in
condition of the plug connector (10, 101, 102, 103) and in parallel or in a pre-defined
angle to said wall.
5. The arrangement as claimed in claim 1, wherein the code of the coding means (13) is
dedicated to the respective component (10, 101, 102 ,103) at or in which the coding
means (13) are arranged.
6. The arrangement as claimed in claim 1, wherein the coding means (13) is adapted to
change the code according to an actual condition of the component (10, 101, 102 ,103)
or of the component in its relation to the device.
7. The arrangement as claimed in claim 6, wherein the condition of the component (10,
101, 102 ,103) comprises at least one of the following component conditions:
an electrical condition, a mechanical condition, an environmental condition, a material
condition, and/or a condition based on a physical effect.
8. A method for detection and/or identification of components (10, 101, 102 ,103) detachably
connected to an electronic device (1), said method comprising the steps of:
- emitting a first electromagnetic beam (I1, I11, I12) from the device (1) to a component (10, 101, 102 ,103) to be detected and/or identified;
- receiving at or in the component (10, 101, 102 ,103) the first electromagnetic beam
(I1, I11, I12) from the device (1);
- coding at or in the component (10, 101, 102 ,103) the received first electromagnetic
beam (I1, I11, I12)with a code according to component's information;
- sending a second electromagnetic beam (I2, I21, I22) coded according to the coding by the coding means (13) from the component (10, 101,
102 ,103) to the device (1);
- receiving at or in the device (1) the coded second electromagnetic beam (I2, I21, I22) sent from the component (10, 101, 102 ,103), and
- processing at or in the device (1) and /or a location remote from the device (1)
the coded second electromagnetic beam (I2, I21, I22) for decoding the information from the code thereof.
9. The method as claimed in claim 8, wherein the second electromagnetic beam is formed
by reflecting the first electromagnetic beam (I1, I11, I12) at a electromagnetic beam reflector arranged at the component (10, 101, 102 ,103).
10. The method as claimed in claim 8, wherein the code of the coding means (13) is dedicated
to the respective component (10, 101, 102 ,103) at or in which the coding step is
performed.
11. The method as claimed in claim 8, wherein the code is changed according to an actual
condition of the component (10, 101, 102 ,103) or of the component in its relation
to the device.
12. The method as claimed in claim 11, wherein the actual condition comprises at least
one of the following component's conditions:
an electrical condition, a mechanical condition, an environmental condition, a material
condition and/or a condition based on a physical effect.
13. A base station for a communication network, said base station comprising the arrangement
as claimed in claim 1.
14. An O&M center for a communication network, said O&M center comprising at least the
processing means of the arrangement as claimed in claim 1.
15. A communication network comprising the arrangement as claimed in claim 1.