Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2000-10-23
2004-08-24
Maung, Nay (Department: 2684)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S502000, C455S553100, C455S426100
Reexamination Certificate
active
06782274
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates in general to a method for transmitting a radio resource control (RRC) message in an asynchronous mobile communication system; and, more particularly to a method for transmitting a radio resource control (RRC) message between an asynchronous mobile station and an asynchronous mobile network regardless of an operating type of a core network.
DESCRIPTION OF THE PRIOR ART
In a conventional synchronous mobile telecommunications system, a synchronous mobile station is connected to a synchronous radio network (for example, a CDMA-2000 radio network), and a synchronous radio network is connected to an ANSI-41 core network.
In a conventional asynchronous mobile telecommunications system, an asynchronous mobile station is connected to an asynchronous radio network (for example, a universal mobile telecommunication system (UMTS) terrestrial radio access network (UTRAN)), and an asynchronous radio network is connected to a global system for mobile communication-mobile application part (GSM-MAP) core network.
FIG. 1A
is a view showing the core network interface architecture of the conventional synchronous mobile telecommunications system. In this drawing, the reference numeral
11
denotes a synchronous mobile station,
12
denotes a synchronous radio network (i.e., a code division multiple access-2000 (CDMA-2000) radio network) which performs a data interfacing operation with the synchronous mobile station
11
and includes a synchronous base transceiver station/base station controller (BTS/BSC), and
13
denotes a synchronous core network (i.e., an ANSI-41 core network) which is connected to the synchronous radio network
12
and includes a synchronous mobile services switching center (MSC)
14
.
In the above core network interface architecture of the conventional synchronous mobile telecommunications system, the synchronous mobile station
11
can be connected to only the synchronous radio network
12
as well known to one skilled in the art, which is in turn connected to the synchronous core network
13
, thereby allowing the synchronous mobile station
11
to be interfaced with only the synchronous core network
13
.
FIG. 1B
is a view showing the core network interface architecture of the conventional asynchronous mobile telecommunications system. In this drawing, the reference numeral
21
denotes an asynchronous mobile station,
22
denotes an asynchronous radio network (i.e., a UTRAN) which includes a Node B which is similar to base transceiver station (BTS) and a radio network controller (RNC), and
23
denotes an asynchronous core network which includes an asynchronous mobile services switching center (MSC)
24
connected to the UTRAN
22
.
In the above core network interface architecture of the conventional asynchronous mobile telecommunications system, the asynchronous mobile station
21
is connected to the asynchronous radio network
22
(i.e., UTRAN) which is in turn connected to the asynchronous core network
23
, thereby allowing the asynchronous mobile station
21
to perform a data interfacing operation with the asynchronous core network
23
.
FIG. 2A
is a view showing the layered protocol structure of the conventional synchronous mobile telecommunications system. In this drawing, the reference numeral
30
denotes a synchronous mobile station,
40
a synchronous radio network and
50
a synchronous core network connected to the synchronous radio network
40
.
The synchronous mobile station
30
comprises a layer
3
31
, a layer
2
35
and a layer
1
36
. The layer
3
31
includes a synchronous call control (CC) entity
32
for management of a call and a synchronous mobility management (MM) entity
33
for management of a mobility.
The layer
1
36
is a physical layer which offers data transport services to higher layers and transfers transport blocks over a radio interface.
The layer
2
35
is a data link layer which includes following sub layers, a medium access control (MAC) sub layer and a radio link control (RLC) sub layer. However, the sub layers are not shown in this drawing.
The MAC sub layer offers data transfer services on logical channels to a higher layer (RLC sub layer) and on transport channels to a lower layer (the physical layer
36
). The MAC sub layer is responsible for mapping of the logical channel onto the appropriate transports channel.
The RLC sub layer offers data transfer services on primitive to a higher layer and on logical channels to a lower layer (MAC sub layer). Also, the RLC sub layer performs error correction, duplicate detection, ciphering and flow control of the data.
The layer
3
31
is a network layer which includes following sub layers, a synchronous radio resource (RR) sub layer, a synchronous call control (CC) entity
32
and a mobility management (MM) entity
33
. In synchronous system, the synchronous RR sub layer is not apparently separated from the others in the layer
3
31
.
The RR sub layer offers data transfer services on primitive to a lower layer (RLC sub layer) and handles a radio resource control signaling of the layer
3
31
between a user equipment (UE) and a synchronous radio network. The RR sub layer manages a radio resource. Also, the RR sub layer assigns/re-configures/releases the radio resource to UE/UTRAN.
The CC entity handles a call control signaling of layer
3
between the UEs and the synchronous radio network.
The MM entity handles a mobility management signaling of layer
3
between the user equipments (UEs) and the synchronous radio network.
The layers
3
to
1
31
,
35
and
36
in the synchronous mobile station
30
communicate with corresponding layers
41
,
45
and
46
in the synchronous radio network
40
.
The synchronous radio network
40
comprises a layer
3
41
, a layer
2
45
and a layer
1
46
. The layers
3
to
1
in the synchronous radio network
40
correspond respectively to those in the synchronous mobile station
30
.
The layers
3
to
1
41
,
45
and
46
in the synchronous radio network
40
communicate with corresponding layers
31
,
35
,
36
,
51
,
55
and
56
in the synchronous mobile station and the synchronous core network
50
.
The synchronous core network
50
comprises a layer
3
51
, a layer
2
55
and a layer
1
56
. The layers
3
to
1
in the synchronous radio network
50
correspond respectively to those in the synchronous mobile station
30
.
The layers
3
to
1
51
,
55
and
56
in the synchronous core network
50
communicate with corresponding layers
41
,
45
and
46
in the synchronous radio network
40
.
In the conventional synchronous mobile station and radio network as the layered protocol structure, the synchronous mobile station
30
receives a Sync channel message from the synchronous radio network
40
over a Sync channel and acquires information necessary to its connection to the synchronous core network
50
, including information related to the synchronous core network
50
and information about the synchronous radio network
40
, from the received Sync channel message.
In other words, for interfacing with the synchronous ANSI-41 network via the synchronous radio network, the synchronous mobile station acquires system information (i.e., information related to the radio network and core network) through a system determination sub-state, a pilot channel acquisition sub-state, a Sync channel acquisition sub-state and a timing changing sub-state after it is powered on.
FIG. 2B
is a view showing the layered protocol structure of the conventional asynchronous mobile telecommunications system. In this drawing, the reference numeral
60
denotes an asynchronous mobile station,
70
a UTRAN and
80
an asynchronous core network.
The asynchronous mobile station
60
comprises a layer
3
61
, a layer
2
65
and a layer
1
66
. In particular, the layer
3
61
includes a non-access stratum (NAS) part and an access stratum (AS) part. The NAS part includes an asynchronous call control (CC) part
62
for management of a call and an asynchronous mobility management (MM) part
63
for management of a mobility. The AS part incl
Hwang Woon-Hee
Park Jae-Hong
Yang Shin-Hyun
Ye Jeong-Hwa
Baker & Botts LLP
Hyundai Electronics Industries Co,. Ltd.
Lee John J
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