System and method for cordless handset registration

US008331931B2
(12) United States Patent
(10) Patent N0.:
(45) Date of Patent:
Whitesell et a1.
(54)
SYSTEM AND METHOD FOR CORDLESS
HANDSET REGISTRATION
5,991,624 A *
6,029,074
(75) Inventors: Stephen R. Whitesell, Howell, NJ (US);
A
Subject to any disclaimer, the term of this
patent is extended or adjusted under 35
11/2000
Cotton ......... ..
6,304,756 B1*
10/2001
Hebeler et al. .
9/2002 Chow et al.
3/2004
455/462
455/411
5/2002
11/2003
DE
4207776
Otsuka ........................ .. 455/462
9/1993
(Continued)
OTHER PUBLICATIONS
Uniden TCX 805 Accessory Handset Owner’s Manual, 2005.
May 31, 2007
(Continued)
Related US. Application Data
(60)
455/435
455/518
(Continued)
Prior Publication Data
US 2007/0123256 A1
Nakakita et a1. ..... ..
8/2004 Raffel et al.
Nov. 29, 2006
(65)
455/450
455/406
Fujita ................... ..
8/2002 Maggenti et al. ..
2003/0216146 A1*
455/571
455/435.1
12/2004 Ramaswamy et al. .
2002/0061748 A1*
2004/0152482 A1
. . . . . ..
FOREIGN PATENT DOCUMENTS
(21) Appl. No.: 11/605,338
Filed:
. . . . . . . . . . .
2002/0102999 A1*
USC 154(b) by 862 days.
(22)
Irvin
............. .. 455/435.1
6,148,205 A *
6,832,082 B1*
Notice:
Ishida et al.
2/2000
6,704,575 B1*
(73) Assignee: VTech Telecommunications Limited,
Hong Kong (HK)
Dec. 11, 2012
*
6,445,911 B1*
Holger Janssen, Richmond (CA)
11/1999
US 8,331,931 B2
Provisional application No. 60/740,646, ?led on Nov.
Primary Examiner * Dwayne Bost
30, 2005.
Assistant Examiner * William F Rideout
Int. Cl.
Malloy, Ltd.
(74) Attorney, Agent, or Firm * McAndrews, Held &
(51)
H04Q 5/02
(52)
(2006.01)
US. Cl. ................ .. 455/435.1; 455/4261; 455/418;
455/419; 455/462
(58)
Field of Classi?cation Search ............. .. 455/435.1,
455/426.1, 418, 419, 462
See application ?le for complete search history.
(56)
References Cited
U.S. PATENT DOCUMENTS
4,593,155
4,636,741
5,012,234
5,353,341
5,463,659
5,675,629
5,765,111
6/1986
1/1987
4/1991
10/1994
10/1995
10/1997
6/1998
Hawkins
Mitzlaff
(57)
ABSTRACT
A method and system for registering wireless devices with a
base unit that is con?gured to communicate wirelessly with
multiple wireless devices. In one example, the wireless
devices are cordless handsets of cordless telephone systems.
When placed in a charging cradle, an unregistered handset
displays a message indicating that the handset should be
registered. A user provides local input to the base unit to
activate a registration sequence. A three-way handshake is
initiated at the base station, wherein a sequence of three
Dulaney et a1.
Gillis et a1. ................. .. 455/464
Nealon et a1.
.... .. 375/133
Raffelet a1.
wireless messages are passed between the base and unregis
tered handset. The handset displays a message indicating
successful registration.
455/552.1
Kim ............................ .. 455/462
100
DU E
L. 160
)
162 164
21 Claims, 13 Drawing Sheets
US 8,331,931 B2
Page 2
US. PATENT DOCUMENTS
2007/0049342 A1 *
3/2007
Mayer et a1. ................ .. 455/558
FOREIGN PATENT DOCUMENTS
DE
DE
EP
WO
19740934
10000963
0164312
9931859
4/1999
8/2001
12/1985
6/1999
OTHER PUBLICATIONS
Uniden TCX 805 Accessory Handset Owner’s Manual (Online Elec
tronic Copy), 2005.
Uniden TCX 805 Accessory Handset Quick Start Guide, 2005.
German Of?ce Action dated Jun. 17, 2010 (Translation provided).
* cited by examiner
US. Patent
Dec. 11,2012
Sheet 1 0113
US 8,331,931 B2
100
120
[$1:31: 3:1 5 132 13
I
3
110
[:15
—5—
)
)
/162164
114
5%§\</12
DUDE
160'
122
H
154"‘1:UM116
EIEIEI
DUE]
EIEIEI
L 160
W
>
§ "\
122
)
162 164
FIGURE 1
124
124
US. Patent
Dec. 11,2012
Sheet 2 0f 13
US 8,331,931 B2
202
Detect presence of
ls handset
h
d t '
204 [V chaarrgieszralgle
_
reglstered?
Y
N
Indicate
registration
208w needed & start ?rst
handset timer
21 0
¢
u Monitor for special
registration signal
from base
Has
?rst handset timer
expired?
Start second
214
/\/ handset timer &
send
acknowledgement
with ID to base
i
Monitor for
registration
authorization
from base
Was
authorization
eoeived?
seciond timer
expired?
Y
226
224
1
Update memory
with security code
216
and handset#
fl’ 228
l
V
Display # and
indicate
Indicate "Not
Registered"
registration was ’\/ 230
successful
v
21 8
andset continues
unregistered
23
Handset begins
normal operation
FIGURE 2
US. Patent
Dec. 11, 2012
Message DisElaEed
NOT REGIST R D
Sheet 3 0f 13
US 8,331,931 B2
Meaning
HS is not registered. This is the permanent display for an
unregistered handset. This message can also indicate a
failed registration attempt.
REGISTER AT BASE
Display shown after an unregistered handset is placed in a
charger (90 second timeout). H8 is monitoring RF for special
registration signal from BS. User should press PAGE on
base unit for 4 seconds while message is displayed.
HS X REGISTERED
Display shown after successful registration (normal feature
timeout)
FIGURE 2a
Message Displayed
=Meaning
NOT REGISTERED
HS is not registered. This is the permanent display for an
unregistered handset. This message can also indicate a
failed registration attempt.
PRESS PAGE FOR
4 SECS ON BASE
Display shown after an unregistered handset is placed in a
charger (90 second timeout). HS is monitoring RF for special
registration signal from BS. User should press PAGE on base
unit for 4 seconds while message is displayed.
HS x REGISTERED
Display shown after successful registration (normal feature
timeout).
FIGURE 2b
Message Displayed
NOT REGISTERED
____________________Meaning
HS is not registered. This is the permanent display for an
unregistered handset. This message can also indicate a
failed registration attempt.
PLEASE REGISTER
PRESS PAGE FOR
4 SECS ON BASE
Display shown after an unregistered handset is placed in a
charger (90 second timeout). HS is monitoring RF for
special registration signal from BS. User should press PAGE
on base unit for 4 seconds=while message is displayed.
HS X REGISTERED
Display shown after successful registration (normal feature
timeout).
FIGURE 26
Meaning
Message Displayed
Not Registered
HS is not registered. This is the permanent display for an
unregistered handset. This message can also indicate a
failed registration attempt.
Register handset:
Display shown after an unregistered handset is placed in a
Press the MENU key
charger (90 second timeout). H8 is monitoring RF for
special registration signal from BS. User should press PAGE
on the base. Find
on base unit for 4 seconds while message is displayed.
‘Register Handset‘ in
menu. Press SELECT.
HS x REGISTERED
Display shown after successful registration (normal feature
timeout).
FIGURE 2d
US. Patent
Dec. 11,2012
Sheet 4 0113
US 8,331,931 B2
requesting
registration
302
Slot
available for
handset?
Start base
timer
’\, 3 1 0
Broadcast
/'\/ 31 2
registration signal
(security code and
Monitor for
acknowledgement
signal with ID
from handset m 314
Has
base timer
expired?
318
Send registration
authorization for
handset with ID 1
Update internal
handset
registration data
/\/ 3 2 4
l
r
If capable.
If “PaP'e' .base
If capable, indicate
indicate successful
5h°u|d 'nd‘cate
no more handsets
registratw"
uns‘f‘cces.sfu|
1320
registration
can be registered x 306
326
C
Base continues normal operation
FIGURE 3
h
308
US. Patent
Dec. 11, 2012
US 8,331,931 B2
Sheet 5 0f 13
' eoeive handse
in charge
cradle
Receive local input
requesting
registration
Detect presence
of handset in
302
charge cradle
204
Slot
available for
handset?
Indicate “Please
Register‘ & start
?rst handset timer
304
i
Monitor for special
registration signal
from base
was
Start base
timer
310
i
Broadcast
registration signal
registration signal
- etected?
Y
/\/ 312
(security code and
212
Monitor for
acknowledgement
Stait second
handset timer 8
send
signal with ID
from handset
acknowledgement
Has
base timer
Monitor for
registration
- xpired'?
authorization
from base
Has
seciond timer
Send registration
W3 5
authorization for
handset with ID
I
i
if capable, indicate
Update internal
can be registered
Update memory
with security code
registration data
and handset #
230
Display # and
indicate
registration was
successful
Registered"
2
J,
i
indicate “Not
no more handsets
handset
23
306
If capable, base
.nd. lftzagjzli'ssful
should indicate
I I‘:r: istration
unsuccessful
9
registration
326
320
Handset begins
nonnal operation
Handset continues
unregistered
Base continues normal operation
218
FIGURE 4
)
US. Patent
Dec. 11, 2012
US 8,331,931 B2
Sheet 6 0f 13
Receive local input
requesting
registration
502
available for
handsets?
N
Y
504
524
‘
available for
Start
base timer
handsets?
/\/ 51 0
Y
r
l
Broadcast ?rst
Broadcast second
registration signal /\l 512
registration signal /-\5/26
(e.g.secur|ty code
and H83)
(e.g.security code
and HS 4)
Receive ?rst
Receive second
N
V
acknowledgzinent
signa with rst
acknowledgment
handset ID
signal with second
m 514
handset ID from
from ?rst handset
second handset
l
7
send ?rst registration /_\/
Send second registration
authorization with with
?rst handset ID
1/528
authorization with with
516
N
second handset ID
@530
Has
timer TBt
expired?
51 8
Y
‘
V
Update internal
Update internal
handset
handset
registration data @520
registration data /\/532
with HS3
with H53, H54
If capable,
indicate H53
If capable,
indicate HS3,HS4
I
successful
registration
W522
successful
registration
If capable, base
“534
_>
should indicate
no more handsets
can be registered
1
506
C
Base continues nonnal operation
FIGURE 5
US. Patent
Dec. 11, 2012
US 8,331,931 B2
Sheet 7 0f 13
Receive local input
including
deregistration
request at
602
base unit
Broadcast
message to all
handsets to
deregister
702/“
Receive message
from base to
deregister
l 604
J,
Correct
Repeat message
two more times
atone second /_\/ 606
704
base security
code?
intervals
Y
l
Handset # 'X’
Delete
all handset
deletes registration
registration info f\/ 608
71 0/»
info
from memory
(# X & security
code) from memory
i
1,
If capable.
indicate
all handsets
deregistered
/\/ 610
Continue normal
base operation
FIGURE 6
612
712 q’
.
t
K
Display Not
Registered
Handset is
714
deregistered
FIGURE 7
Display normal idle
infoincluding
A; 706
handset # 'X'
andset continues
as registered
708
US. Patent
Dec. 11, 2012
Sheet 8 0f 13
US 8,331,931 B2
Receive
802
Deregistration
selection from
handset menu
Request
“yes” or “no”
for con?rmation
to deregister
806
808
Receive
“yes” or "no"
is request
con?rmed?
Y
i
Delete registration
info
(# X & security
code) from memory
J,
Display ‘Not
Registered”
814
Handset is
deregistered
FIGURE 8
V
Display normal idle
info including
A} 816
handset #
andsetcontinues
as registered
818
US. Patent
Dec. 11,2012
US 8,331,931 B2
Sheet 9 0f 13
User selects
902
deregtstration
from base
menu
90W Base requests user
to indicate ‘all’ or
handset #
V
USBI' indicates
906
handset?!
Handsotit receives
message from base
to deregister
, "V
928
selected?
8358 DQ666358
Base sends
message to all
message to
handsets t0
handset 8
dereqtster
to dareqister
l
v
Base repeats
Base repeats
message two more
times at 1 second
tntarvats
’\1 920
message two more 4, 922
times at 1 second
tntervats
tr
v
Base deletes
Base deletes
at] handset
registration info
Handset # oatetes'
handset at
regtslration Info ’\/ 924
L, reglst'ation into '\/ 934
(>9 & security code)
from memory
from memory
from memory
t
J,
t
Base disotays brief
Base displays brief
message Im?cating
message Indicating
all handsets were
handset # was
deregistered
v
derregistereo
.
’\/ 926
‘5 un
“*9
.
mm imaging’
HEM
‘mmd1“ handset it
9
942
)
938 q, é'zg?gd
m
Handset dts la
936 ’\ info Mimi-2:‘?
v
918 /\< Base continues normat operation
FIGURE 9a
Handset o
940
w
tffagsrgtggggge?
FIGURE 9b
US. Patent
Dec. 11,2012
FIGURE 10a
Sheet 10 0113
FIGURE 10b
US 8,331,931 B2
US. Patent
Dec. 11,2012
Sheet 11 0113
1102
1104/\
1110a,
1112’\
.
mammary
t ,3
my.»
,
1116/\ mg
1118
8216535
FIGURE 11a
FIGURE 11b
US 8,331,931 B2
US. Patent
Dec. 11,2012
Sheet 12 0113
US 8,331,931 B2
A, q, 1234
FIGURE 1 2a
FIGURE 12b
US. Patent
Dec. 11, 2012
US 8,331,931 B2
Sheet 13 0f 13
1324
’\/
d, 1326
1320
mm 1328
1322
.
FIGURE 13a
mama
FIGURE 13b
US 8,331,931 B2
1
2
SYSTEM AND METHOD FOR CORDLESS
HANDSET REGISTRATION
includes a charging cradle. The charging cradle is con?gured
to supply current to an unregistered cordless handset When the
handset is placed therein. A cordless handset includes a reg
istration-check routine that is activated When the handset
This application claims the bene?t of US. Provisional
receives current in the charging cradle. The registration
Application No. 60/740,646, ?led Nov. 30, 2005, Which is
herein incorporated by reference in its entirety.
check routine determines Whether the handset is registered or
not and indicates through an interface When the handset is not
BACKGROUND
registered. The handset is further con?gured to generate a
temporary ID uniquely associated With that handset. A base
1. Field of the Invention
The present invention relates generally to communications
systems. More particularly, the present invention relates to
communications betWeen local Wireless devices.
station is provided that includes a user interface to receive a
registration input request locally. In exemplary embodiments,
the user interface of the base station comprises a menu on a
display screen in Which a user can select a registration routine.
2. Background
The base station is con?gured to broadcast a registration
message containing a security code to receiving units Within
In today’s home and of?ce environment, Wireless devices
such as cordless telephone systems are nearly ubiquitous.
a broadcast area, and to receive an acknoWledgement from the
Often a user may desire to add cordless handsets to a cordless
telephone system that includes a base station unit and a set of
unregistered handset containing the unique ID. The handset
portable handsets. For example, an initially purchased hand
further includes a memory that is updated When it receives
set may become disabled or destroyed, and a user may need to 20 authoriZation from the base unit for registration. The memory
replace the handset. In addition, a user may simply Wish to
add a cordless handset to an existing system to increase the
preferably includes the security code and a handset number
number of rooms in a house that contain a handset.
unit further includes an internal handset registration database
When adding a handset to an existing cordless telephone
system, a user is required to register the handset With the
system. This typically involves the user having to determine
assigned to it by the base unit during registration. The base
that is updated When registration is completed.
25
DESCRIPTION OF THE DRAWINGS
an identi?cation number associated With a base unit of the
system (base ID), after Which the base ID must be entered into
the handset through an interface, such as a keypad normally
used for dialing. Because the base ID typically is a 15 digit
number, the process is cumbersome and prone to error.
30
SUMMARY OF THE INVENTION
In an embodiment of the present invention, a method for
registering a Wireless device, such as a cordless handset With
a communications system, such as a cordless telephone sys
tem, comprises a ?rst step of monitoring, at the Wireless
device, for receipt of a registration signal from a base unit of
the Wireless communications system. An acknowledgement
35
40
if the registration signal is received. A registration authoriza
tion signal sent in response to the acknoWledgment message
is then received at the Wireless device. In one embodiment of
45
signal, the handset detects the presence of a How as a result of
being placed in a current source device. The current source
device is preferably a charging cradle. The charging cradle
can be integral to a base unit (also termed herein “base sta
tion”) or a stand alone cradle. A message is displayed that
alerts a user that the handset needs to be registered. Input is
50
received locally at the base station alerting the base station of
a request to register the handset. Preferably, the user manually
inputs the registration request into the base unit through a
button, keypad or other interface. A registration signal is
broadcast from the base station. The handset detects the reg
istration signal and sends an acknoWledgment to the base
station, including a unique ID. The base station sends an
55
enhanced registration of one or more Wireless devices With a
the method of FIG. 3.
FIG. 5 illustrates exemplary steps involved in a method for
preventing simultaneous registration of more than one hand
set into a single registration slot, according to an embodiment
of the present invention.
FIG. 6 illustrates exemplary steps involved in a method for
deregistering a registered handset, in accordance With another
embodiment of the present invention.
FIG. 7 illustrates exemplary steps involved in a method for
deregistering a registered handset, in accordance With another
embodiment of the present invention.
FIG. 8 illustrates a method for handset initiated handset
authoriZation including the unique ID, Which is only accepted
by the handset associated With the unique ID.
according to an exemplary embodiment of the present inven
tion.
FIGS. 2a-2d illustrate exemplary message formats related
to handset registration, according to alternative embodiments
of the present invention.
FIG. 3 illustrates exemplary steps involved in a method for
base unit, according to an exemplary embodiment of the
present invention.
FIG. 4 illustrates the interrelation betWeen speci?c steps of
the exemplary method of FIG. 2 and corresponding steps in
message from the Wireless device is sent over an air interface
the present invention, before monitoring for a registration
FIG. 1 illustrates a system for enhanced registration of a
Wireless device With a base unit, according to one embodi
ment of the present invention.
FIG. 2 illustrates exemplary steps involved in a method for
enhanced registration of a Wireless device With a base unit,
60
deregistration, according to an embodiment of the present
invention.
FIGS. 9a and 9b illustrate exemplary steps involved in a
method for handset deregistration, as performed at a base unit
In accordance With the above method, a cordless handset
can be added to a cordless system Without a user having to
and handset, respectively, according to another embodiment
manually input long identi?cation codes into the system. At
of the present invention.
FIGS. 10a and 10b illustrate exemplary steps involved in a
the same time, the user is assured that registration of preex
isting handsets is not affected by the process.
In another embodiment of the present invention, a system
for enhanced registration of an unregistered cordless handset
65
method for handset deregistration, as performed at a base unit
and handset, respectively, according to a further embodiment
of the present invention.
US 8,331,931 B2
3
4
FIGS. 11a and 11b illustrate exemplary steps involved in a
method for handset deregistration, as performed at a handset
source device 160. When handset 150 is placed in current
source device 160, handset 150 checks Whether it is regis
tered. For example, current source device 160 can be a charg
and base unit, respectively, according to another embodiment
of the present invention.
FIGS. 12a and 12b illustrate exemplary steps involved in a
ing cradle that supplies current to the cradled handset. Pro
cessor 116 then detects that handset 150 is draWing current
from charge cradle 160, determines that handset 150 is not
registered, and displays a message to the user indicating that
the handset is to be registered. For example, handset 150 can
method for handset deregistration, as performed at a handset
and base unit, respectively, according to another embodiment
of the present invention.
be provided With a registration check routine that is triggered
to be performed by processor 116 When it detects that the
handset is in the charging cradle. If the processor determines
an unregistered condition, it then sends a signal for the hand
set to provide a signal to the user that registration is required
(hereinafter, term “registration required indication” is used to
FIGS. 13a and 13b illustrate exemplary steps involved in a
method for handset deregistration, as performed at a handset
and base unit, respectively, according to a further embodi
ment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
denote a signal or message provided to a user that indicates a
a Wireless device With a base unit, according to one embodi
Wireless device is unregistered and/or the Wireless device
requires registration). In one example of a registration
ment of the present invention. Many digital and analog Wire
required indication, display 154 may indicate the message
FIG. 1 illustrates a system 100 for enhanced registration of
less phone systems can accommodate registration of more
than one handset. System 100 provides for registration of
multiple handsets With a base unit for either analog or digital
devices. System 100 includes base unit 110 (also termed
“base station” or “base” herein) and Wireless devices (also
termed “handsets” or “cordless handsets” herein) 120, 130,
140, 150 that are capable of Wireless communication With
REGISTER_AT_BASE to the user. The user can then go to
20
base 110 and, using base user interface 114, initiate a regis
tration sequence for the handset. Base user interface 114 can
be a menu key, a PAGE button, or a series of keys used to
access a menu, as described further beloW.
In a preferred embodiment of the present invention, regis
25
base unit 110. System 100 is preferably con?gured such that
tration of a neW handset With base 110 proceeds using a
three-Way handshake. The three-Way handshake entails a
series of three radio communication messages, the ?rst and
a user of any of the handsets can conveniently access base unit
110. For example, system 100 can be a cordless telephone
third of Which are sent from base unit 110 to the registering
system deployed in a home environment Where a user can
handset, and the second of Which is sent from the registering
Walk from any cordless handset or charging cradle location to
a base unit in less than a feW minutes. System 100 additionally
30
handset to base unit 110. As described in more detail beloW,
this procedure ensures that at most one handset is registered to
includes one or more current source devices 160 that are
base unit 110 for any given handset number.
con?gured to receive the Wireless devices. In particular inter
In the ?rst message of the three Way handshake, base unit
110 broadcasts a registration signal that includes a handset
number to be assigned to the neW handset. For example,
handset 150 may be eligible to be designated With the nick
name “HS4” by base unit 110. Handsets 120, 130, and 140 are
face 160 can be a charging cradle that can be used for handset
charging through contacts 122, 124 of a handset using leads
162, 164. In the embodiment disclosed in FIG. 1, base unit
35
110 also includes a charging cradle 160' integral to the base
unit.
already registered and designated With nicknames HS1, HS2
and HS3, respectively. By assigning handsets nicknames, the
Base unit 110 includes a memory 112 that contains a hand
set registration database containing information related to
handsets that are registered With base unit 110. Preferably,
base unit 110 is con?gured to communicate only With those
handsets that are registered to base unit 110. Accordingly,
other Wireless devices that are not registered With base unit
110 Will not establish communications thereto. Memory 112
includes a ?xed amount of registration slots, Where each
registration slot is allocated to a separate handset. The term
“registration slot”, as used herein, refers to a data structure,
softWare, or other entity that is con?gured to contain infor
mation speci?c to a particular handset registered to a base
unit, and is stored in the base unit. Because of system memory
and processor limitations, among other factors, the number of
registration slots available are limited. For example, in one
embodiment of the present invention, the amount of registra
tion slots available is four. Thus, only four separate handsets
40
available registration slots, for example. When communicat
ing With any registered handset base unit 110 can correctly
identify each separate handset registered in a registration slot.
45
communications. For example, in a TDMA phone system if
tions With the tWo handsets, by dynamically assigning to each
50
registered handset a distinct pair of communications slots for
that handset, thus alloWing effective duplex communications
55
In many Wireless systems such as cordless phone systems
60
system using base unit 110 and current source device (here
inafter referred to also as “charging cradle”) 160. For
example, handset 150 may be a neW store bought Wireless
device that the user Wishes to add to a preexisting system that
includes base 110 and handsets, 120, 130, 140, as Well as
charging cradle 160. When the user Wishes to register handset
150 With base unit 110, the user places handset 150 in current
This is especially useful, for example, during actual voice
tWo handsets go off-hook in response to an incoming call,
base unit 110 can establish simultaneous voice communica
can be registered to base unit 110 at one time.
a user Wishes to add a handset to the preexisting system.
According to one embodiment of the present invention, a user
of system 100 can conveniently add a neW handset unit to the
base unit can effectively manage communications With mul
tiple handsets. The handset nicknames can be associated With
With each handset, Without interference betWeen different
handsets, since each pairs of communications slots corre
sponding to a given handset does not overlap in time With any
other pair of communication slots.
In the second stage of the three Way handshake, handset
150, after receiving the broadcast message, returns an
acknoWledgment message to base unit 110. The acknoWl
edgement message includes an identi?cation (ID) that iden
ti?es handset 150 as the one sending the acknoWledgment
message. The ID could be, for example, a tuned automatic test
equipment (ATE) parameter that has a high probability of
being unique to the handset, or alternatively, could be gener
ated based on a free running timer. In the third message, base
65
unit 110 broadcasts a registration acknoWledgment message
including the ID received from handset 150. Handset 150 can
receive the acknoWledgment message and update internal
US 8,331,931 B2
5
PLEASE REGISTER
PRESS PAGE FOR 4
SECS ON BASE
Finally, FIG. 2d illustrates a illustrates a message display
memory 116 With handset number “HS4” and any other infor
mation received from base unit 110 during registration if the
ID matches the one it originally sent. Because the message
contains the ID unique to handset 150, handsets 120-140
ignore the broadcast registration acknowledgment message.
sequence appropriate for a six-line dot matrix display the
handset displays in sequence the messages NOT REGIS
TERED and
Base unit 110 can then update internal handset registration
database 112 and registration is complete.
System 100 thus provides a convenient manner to register
REGISTER HANDSET:
PRESS THE MENU KEY
ON THE BASE. FIND
‘REGISTER HANDSET’ IN
MENU. PRESS SELECT
a Wireless device With a base station, Without the need of a
user to record or memoriZe detailed information associated
With the Wireless device. Moreover, a user of the unregistered
Wireless device need not knoW or remember that the Wireless
device is unregistered, since the user is alerted as to the
In addition, in step 208, When the handset displays a mes
sage indicating the need to register With a base unit, a ?rst
handset timer is started. The ?rst handset timer is con?gured
to alloW the handset to register Within a certain time WindoW.
In one example, the duration of the ?rst handset timer is about
unregistered status, for example, When the Wireless device is
place in a charge cradle. In addition, because registration is
initiated at the base station, inadvertent registration of a Wire
less device to the Wrong base station, such as a base station in
a neighbor’ s apartment, is prevented. Finally, during registra
tion of a ?rst unregistered Wireless device, other Wireless
60 to 180 seconds.
20
inadvertently registered With the same nickname.
FIG. 2 illustrates exemplary steps involved in a method for
enhanced registration of a Wireless device With a base unit,
according to an exemplary embodiment of the present inven
above. The registration signal may include, for example, a
25
device.
In step 202, a current source device such as a charge cradle
receives a handset.
handset resumes normal operation. If the handset determines
that it is not registered, the process moves to step 208.
In step 208, the handset displays an indication that regis
tration is needed. In exemplary embodiments of the present
invention, the indication is provided through a message or
30
not been received, the process moves to step 214, Where the
handset checks to see if the ?rst handset timer has expired. If
the ?rst handset timer has expired, the process moves to steps
216 Where the message NOT REGISTERED is again dis
played on the handset, and the handset continues unregistered
in step 218.
If, in step 214, the timer has not expired, the process moves
35
to step 210 Where the handset continues to monitor for a
registration signal from the base unit. When a registration
signal is detected in step 212, the process moves to step 220.
In step 220 the handset starts a second handset timer and
sends an acknoWledgment back to the base station. In one
40
series of messages in an LCD display on the handset.
FIGS. 2a-2d illustrate exemplary message formats (to
example, the duration of the second handset timer is about 15
to 60 seconds. As indicated above, the acknoWledgment con
tains ID information designed to uniquely identify the hand
gether With message explanations) indicating that registration
is needed (a “registration required” signal, or message) or that
registration is successful, according to alternative embodi
security code and handset number to be assigned a handset if
the registration is successful.
In step 212, if it is determined that a registration signal has
tion. The steps shoWn are those that occur in the Wireless
In step 204, the handset receives charging current and
detects that it is in a charging cradle.
After detecting that it is a charging cradle, in step 206, the
handset determines Whether it is registered to the base unit. If
already registered, the process moves to step 232 Where the
In step 210, the handset monitors for a registration signal
from the base unit. When the handset detects a registration
signal from the base, it can then proceed to initiate the second
portion of a three Way registration handshake as described
devices, such as additional unregistered handsets are not
set to the base unit.
In step 222, the handset monitors for registration authori
sages appropriate for a one-line dot matrix display. When the
Zation from the base unit.
In step 224, the handset determines Whether an authoriza
tion including the ID information sent in step 220 Was
handset display is poWered on, for example, the handset may
received. If authorization Was not received the process moves
45
ments of the present invention. FIG. 2a displays text mes
display the default message NOT REGISTERED if the hand
set is not registered. This can occur When the handset is placed
in a charging cradle, but also may occur When an unregistered
handset is otherWise poWered on. The further message REG
ISTER AT BASE appears after the handset is placed in the
charging cradle and determines that it is not registered.
FIG. 2b illustrates exemplary messages displayed When a
handset having a tWo-line dot matrix display is placed in a
50
55
In step 228, the handset updates its memory With informa
tion received from the base station during the registration
charging cradle. In addition to an initial NOT REGISTERED
message that may be displayed in advance of or after placing
the handset in the cradle, the handset displays the message
PRESS PAGE FOR 4 SECS ON BASE. The latter instruc
tions indicate that the user is to depress and hold a PAGE key
that is provided on the base unit that is used to initiate the
process. For example, the information can include the handset
60
registration process.
FIG. 20 illustrates a similar message display sequence
appropriate for a four-line dot matrix display in Which the
handset displays in sequence the messages NOT REGIS
TERED and
to step 226.
In step 226, the handset determines Whether the second
handset timer has expired. If the second handset timer has
expired, the process moves to step 216 Where the handset
displays the NOT REGISTERED message. If the second
handset timer has not expired, the process returns to step 222.
If authoriZation is received in step 224, the process moves
to step 228.
65
number assigned and the security code.
In step 230, after successful registration, the handset indi
cates that registration Was successful. For example, in any of
one-, tWo-, four-, or six-line dot matrix displays the message
HANDSET X REGISTERED could be displayed, Where “X”
stands for a handset number that is actually displayed.
FIG. 3 illustrates exemplary steps involved in a method for
enhanced registration of one or more Wireless devices With a
US 8,331,931 B2
7
8
base unit, according to an exemplary embodiment of the
If the base unit receives an acknoWledgment With handset
ID in step 316, the process moves to step 322.
In step 322, the base sends an authoriZation message that
authoriZes a handset With the received handset ID to register
With the base unit.
present invention. The steps shown are those that occur in the
base unit.
In step 302, the base unit receives local input requesting
registration of a handset. For, example a user may place a
handset in a charging cradle and determine that the handset
In step 324, the base unit updates an internal handset (Wire
less device) database in the base unit that includes the neWly
registered handset ID and the associated handset number
requires registration With the base unit. The user then pro
ceeds to the base unit and initiates a registration request by
(nickname, such as HS4). The base unit can then communi
cate With the neW handset designated as HS4. For example, in
pressing a button or accessing a menu on the base unit. For,
example, as discussed above With respect to FIG. 3d, the base
unit may be provided With a dot matrix display, a user-select
the case of a TDMA system it can allocate speci?c commu
nication slots to send and receive voice or data With HS4.
able menu, such as a scrollable menu, and menu keys that
alloW a user to select a ‘REGISTER HANDSET’ option that
In optional step 326, the base unit indicates that registration
Was successful.
initiates a handset registration process after selection.
Alternatively, the base unit may be provided With a PAGE
FIG. 4 illustrates one example of hoW the speci?c steps of
the exemplary method of FIG. 2 and corresponding steps in
key (button) that is depressed by a user to initiate the regis
the method of FIG. 3 can be interrelated. The messages of the
three Way handshake, Which are sent as Wireless communi
cations betWeen handset and base station, are indicated as
dotted arroWs. Thus, as shoWn in FIG. 4, in one embodiment
tration process. In one embodiment of the present invention,
as indicated in FIG. 20, a user presses a PAGE key for four
seconds. Preferably, the handset registration process is initi
ated after the PAGE key is depressed for about tWo seconds,
20
of the present invention, in a single registration process for an
unregistered Wireless device, the exemplary steps in the
so that a user is likely to successfully initiate the registration
process by depressing the key for four seconds.
inventive method that are outlined in FIG. 2 are performed at
In step 304, the base unit determines Whether a registration
slot is available to register an unregistered handset. For
example, a base unit having four registration slots may deter
mine that three handsets are registered and one registration
slot that is not associated With a registered handset remains. If
the Wireless device, While those steps in the inventive method
the base unit determines that no registration slots are available
to register a handset, the process moves to step 306.
25
con?gured to engage in the three Way handshake registration
process only after being placed in a current source such as a
charging cradle. If the registration process of a handset is
30
In optional step 306, the base unit, if capable, indicates that
equipped base unit may display NO MORE HANDSETS
35
more, for example, depressing a page key on the base unit.
In one embodiment of the present invention, the handset is
only con?gured to perform steps 210, 220 and 222 ifit is in a
With registering a neW Wireless device, such as checking for
40
or monitoring for acknoWledgment signals. If an open regis
tration slot is determined to exist in step 304, the process
moves to step 310.
In step 310 the base unit starts a base timer. The base unit
timer is used to limit the period in Which a registration attempt
can take place. In one example, the base unit timer duration is
45
about 15 to 120 seconds.
charging cradle or similar current source device. In other
Words, if the handset is not in a charging cradle it cannot
participate in the three Way handshake. In one embodiment of
the present invention, a handset could indicate an unregis
tered status and start a timer after being poWered on Without
being in a charging cradle. HoWever, once a registration pro
cess is initiated at a base unit according to the steps outlined
in FIG. 3, for example, the handset Would be unable to par
ticipate in the three Way handshake Without being place in a
In step 312, the base broadcasts a registration signal as
discussed above. The registration signal includes a security
code and a handset nickname, such as HS4, that represents the
202-232 is performed again. A user can then reinitiate a
handset registration process by performing step 302 once
When the base unit does not perform operations associated
available registration slots, broadcasting registration signals
unsuccessful, the handset can be removed from the current
source, such as being removed from a charging cradle, and
then replaced in the current source device. The handset is
con?gured to detect its removal from and replacement in the
current source, after Which the process according to steps
no more handsets can be registered. For example, a dot matrix
ALLOWED, after a PAGE button is depressed for more than
tWo seconds. The process then moves to step 308 and the base
unit resumes normal operation. The terms “normal operation”
or “normal operation state,” as used herein, refer to the state
outlined in FIG. 3 are performed at the base unit.
In one embodiment of the present invention, the handset is
charging cradle.
50
Thus, for example, a user attempting to make a phone call
designation for the next available handset. The registration
signal is sent by RF signal and can be received by any com
might ?rst notice that the handset is unregistered When it
displays an unregistered message afterbeing poWered on. The
patible handsets that can establish an RF link With the base
user then proceeds to place the handset in a charging cradle
and to initiate a registration process by pressing a PAGE key
at a base unit before expiration of a timer launched by the
unit. HoWever, registered handsets can ignore the broadcast
registration signal.
55
In step 314, the base unit monitors to see if any handset is
handset When it Was turned on. In one particular embodiment
sending an acknoWledgement signal. The base monitors to
of the present invention, the handset could be con?gured to
see if a signal from a handset is received, including a handset
ID.
In step 316, if the base unit determines that an acknoWl
provide a registration required indication upon poWer on or
60
charging cradle. This Would increase the likelihood of a suc
cessful registration process When a handset is poWered on
edgment signal has not been received, the process moves to
step 318.
In step 318, the base unit checks to see if the base timer has
expired. If the base timer has expired, then the process moves
to optional step 320, Where the base unit indicates, if possible,
that registration Was unsuccessful. If the timer has not
expired, the process returns to step 312.
upon placement in a charging cradle, While also being con
?gured to start a ?rst timer only When being placed in a
under conditions Where the time required for placement of the
handset in a charging cradle and initiating the registration
65
process may exceed the duration of the ?rst timer. For
example, if a user is upstairs When poWering on an unregis
tered handset and the charging cradle and base unit are both
US 8,331,931 B2
10
downstairs, the user could delay running downstairs to place
In step 516, the base unit sends a ?rst registration authori
Zation message including “IDX.” This message is then
received by handset X and ignored by handset Y, so that
the handset in the charging cradle, since the handset is con
?gured to start the timer only when placed in the charging
handset X completes successful registration.
cradle.
In another embodiment of the present invention, a handset
In step 518, the base unit checks to see if the base timer has
expired. If so, the process moves to step 520.
is con?gured to alert a user as to its unregistered status and to
In step 520, the internal handset registration database in the
base unit is updated to indicate that handset X is designated
HS3 and allocated handset registration slot 3.
In step 522, the base unit indicates that HS3 is successfully
start a timer upon being powered on. Thus, after being pow
ered on, the process proceeds according to steps 206-232.
In the case where a user wishes to register multiple unreg
istered handsets with a base unit, the above inventive method
outlined in FIGS. 2-4 allows a user to register the unregistered
registered.
If in step 218 the base timer has not expired, the process
moves to step 524. In step 524, the base unit determines
whether a handset registration slot remains open. If not the
handsets one at a time. Thus, a user can place a ?rst unregis
tered handset in a charging cradle, and initiate a registration
process at a base unit for the ?rst handset. After the registra
tion process is complete at step 232, the ?rst handset can be
process moves to step 506 as described above. In the scenario
in which another registration slot remains open, the process
removed and a second unregistered handset placed in the
charging cradle or in a different charging cradle, after which
moves to step 526.
the user initiates a second registration process at the base unit,
tration signal indicating that handset HS4 registration slot is
open. The broadcast signal may be received by previously
registered handsets and handset X, but is ignored. However,
handset Y, knowing that it is still not registered, receives the
In step 526, the base unit sends a second broadcast regis
and so forth.
20
In the case where more than one unregistered handset is to
be registered with a base, in accordance with another embodi
ment of the present invention, mistakes in the registration
process can be prevented. For example, a user may have two
new handsets that are to be registered, both of which become
activated within a radio communications range of a base unit.
message and sends an acknowledgment to the base unit.
25
In step 528, the base unit receives a second acknowledg
ment message with “IDY” indicating that handsetY is regis
tering.
In step 530, the base unit broadcasts a second registration
authoriZation message including “IDY” which indicates the
The handsets could become activated by being turned on or
being placed in separate charging cradles. The user may then
proceed to initiate a registration sequence with the purpose of
unaware that a second unregistered handset is active and able
ID of the handset to receive the authorization. HandsetY can
then receive the authorization message and complete success
ful registration as HS4 corresponding to the last open regis
to receive and send messages to the base unit. Thus, the base
tration slot available. All other active handsets ignore the
unit could inadvertently attempt to register both unregistered
message because of the “IDY” included in the message indi
registering a ?rst handset placed in a charging cradle, possibly
handsets at the same time, resulting in both handsets being
assigned the same registration slot.
FIG. 5 illustrates exemplary steps involved in a method for
preventing simultaneous registration of more than one hand
set, according to an embodiment of the present invention.
In step 502, a base unit receives local input through a user
interface requesting initiation of a handset registration pro
cess, as discussed above. In step 504, the base unit determines
whether any registration slots are available, and if not, the
process moves to steps 506 and 508 where the base indicates
no registration slots are available, and resumes normal opera
tion.
In the case where registration slots are available, the pro
30
35
database indicating that handsets X and Y are registered as
HS3 and HS4, respectively.
In step 534, the base unit indicates that HS3 and HS4 are
successfully registered.
40
are active.
FIG. 6 illustrates exemplary steps involved in a method for
deregistering a registered handset, in accordance with another
45
cess moves to step 510. For example, a user may have two new
50
In step 512, a ?rst registration signal is broadcast. The
registration signal includes handset information such as HS3
designating the next slot to be registered with the base unit.
pool and destroyed. The base unit does not realiZe that HS3 is
55
andY, if active, receive the broadcast registration signal. Both
send acknowledgement replies to the base unit.
ally, the base unit will not allow registration of a new handset
to the slot associated with the previous handset designated as
HS3 because it determines the registration slot to be occupied
with information related to the now defunct handset. In order
add a new handset in place of “HS3” a user then proceeds to
60
the broadcast signal and return an acknowledgment one half
second before handset Y does so. The acknowledgment
received from handset X is then processed by the base unit,
while the acknowledgment from handset Y is ignored. The
processed acknowledgment includes handset ID information
identifying the handset as IDX, where IDX stands, for
example, for an alphanumeric identi?er of handset X.
base unit that has all available handset registration slots
accounted for (registered to handsets), the user may decide to
deregister all registered handsets. For example, in a four
handset system in which the base unit has four available
no longer active and continues to broadcast to HS3 . Addition
a plurality of active handsets. Both unregistered handsets X
In step 514, the base unit receives the ?rst acknowledge
ment reply to reach it. For example, handset X might receive
embodiment of the present invention. In the case where a user
needs to register an additional wireless device (handset) to a
handset registration slots that are occupied by four registered
handsets, handset three (HS3) is accidentally dropped in the
tion slots are available, and starts a timer in step 510.
The registration signal may then be received, for example, by
Thus, proper registration of unregistered handsets is
assured even in the case where multiple unregistered handsets
unregistered handsets, X and Y, and two already registered
handsets in a system that accommodates four registration
slots. The base unit determines in step 504 that two registra
cating it is for handset Y.
In step 532, the base unit updates a handset registration
deregister the existing “good” handsets, so that when a new
registration process is performed a total of four handset reg
istration slots are recogniZed as available by the base unit.
In step 602, the base unit receives local input at a user
interface on the base indicating that all handsets are to be
65
deregistered. The local input can be, for example, a user
depressing and holding a PAGE key on the base unit while the
base unit is reconnected to AC power.