Source: http://www.google.com/patents/US7443881?dq=6101531
Timestamp: 2015-05-22 20:18:57
Document Index: 397809955

Matched Legal Cases: ['Application No. 1999', 'Application No. 1999', 'Application No. 1999', 'Application No. 1999', 'art 161', 'Application No. 00']

Patent US7443881 - Method and apparatus for interfacing synchronous core network with ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA method and apparatus for interfacing a synchronous core network with an asynchronous radio network in a next-generation mobile telecommunications system is disclosed. The method for mapping a message in order to interface a synchronous core network with an asynchronous radio network, the radio network...http://www.google.com/patents/US7443881?utm_source=gb-gplus-sharePatent US7443881 - Method and apparatus for interfacing synchronous core network with asynchronous radio networkAdvanced Patent SearchPublication numberUS7443881 B2Publication typeGrantApplication numberUS 11/022,497Publication dateOct 28, 2008Filing dateDec 22, 2004Priority dateJul 28, 1999Fee statusPaidAlso published asDE60036446D1, DE60036446T2, EP1096816A2, EP1096816A3, EP1096816B1, US6853852, US8135030, US8687651, US20050239484, US20090196222, US20120202534Publication number022497, 11022497, US 7443881 B2, US 7443881B2, US-B2-7443881, US7443881 B2, US7443881B2InventorsJae-Hong Park, Woon-Hee Hwang, Yeon-Sang Koo, Chong-won Lee, Shin-Hyun Yang, Jeong-Hwa YeOriginal AssigneeUtstarcom Korea Limited (C/O Utstarcom, Inc.)Export CitationBiBTeX, EndNote, RefManPatent Citations (20), Non-Patent Citations (1), Referenced by (3), Classifications (20), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetMethod and apparatus for interfacing synchronous core network with asynchronous radio network
US 7443881 B2Abstract
A method and apparatus for interfacing a synchronous core network with an asynchronous radio network in a next-generation mobile telecommunications system is disclosed. The method for mapping a message in order to interface a synchronous core network with an asynchronous radio network, the radio network having a base station (BS), the base station having a radio resource controller, a radio link controller, a medium access controller and a physical controller, the method comprising the steps of: a) selecting a function necessary to map a synchronous message to an asynchronous message; b) determining whether the synchronous message is to be transmitted to the mobile station or not; c) storing information necessary to map the synchronous message to the asynchronous message if the synchronous message is to transmitted to the mobile station, d) mapping parameters in the synchronous message to those in the asynchronous message, thereby generating the asynchronous message; e) discarding the message not to be transmitted to the mobile station after storing parameters included in the message not to be transmitted onto a predetermined device; and f) transmitting the asynchronous message to the radio resource controller.
a) receiving a message received from the synchronous core network, the message having parameters to be bypassed and parameters not to be bypassed;
b) determining whether the parameters are to be bypasses or not;
c) bypassing the parameters to be bypassed to the mobile station if the parameters are to be bypassed by:
c1) determining whether the parameter to be bypassed can be processed by a parameter mapping or not;
c2) mapping the parameter which is a synchronous parameter to an asynchronous parameter;
c3) determining whether a size of the asynchronous parameter is equal to that of the synchronous parameter or not;
c4) if the size of the asynchronous parameter is equal to that of the synchronous parameter, arranging the asynchronous parameters in order of the synchronous parameter and generating a bypass data; and
c5) transmitting the bypass data to the mobile station; and
d) processing the parameters not to be bypassed and generating a processed message if not.
e) transmitting the processed message.
3. The method as recited in claim 1, further including the steps of:
c6) if the parameter to be bypassed can not be processed by a parameter mapping, encapsulating the parameter to be bypassed in accordance with a data format of the radio resource controller and generating an encapsulation data; and
c7) transmitting the encapsulation data to the mobile station.
4. The method as recited in claim 1, wherein the step d) includes:
d1) determining whether the parameter not to be bypassed should be processed or not;
d2) if the parameter not to be bypassed should be processed, processing the parameter not to be bypassed; and
d3) if not, storing the parameter not to be bypassed.
5. An apparatus for transmitting a call control/mobility management (CC/MM) message from a synchronous core network to an asynchronous radio network, the radio network having a mobile station (MS), a base transceiver station (BTS), and a base station controller (BSC), the apparatus comprising:
means for receiving a message received from the synchronous core network, the message having parameters to be bypassed and parameters not to be bypassed;
means for determining whether the parameters are to be bypassed or not;
means for bypassing the parameters to be bypassed to the mobile station if the parameters are to be bypassed, wherein said means for bypassing includes:
means for determining whether the parameter to be bypassed can be processed by a parameter mapping or not;
means for mapping the parameter which is a synchronous parameter to an asynchronous parameter;
means for determining whether a size of the asynchronous parameter is equal to that of the synchronous parameter or not;
means for arranging the asynchronous parameters in order of the synchronous parameter and generating a bypass data if the size of the asynchronous parameter is equal to that of the synchronous parameter; and
means for transmitting the bypass data to the mobile station; and
means for processing the parameters not to be bypassed and generating a processed message if not.
6. The apparatus as recited in claim 5, further comprising means for transmitting the processed message.
7. The method as recited in claim 5, further including the steps of:
means for if the parameter to be bypassed can not be processed by a parameter mapping, encapsulating the parameter to be bypassed by a parameter mapping, encapsulating the parameter to be bypassed in accordance with a data format of the radio resource controller and generating an encapsulation data; and
means for transmitting the encapsulation data to the mobile station.
8. The method as recited in claim 5, wherein the means for processing includes:
means for determining whether the parameter not to be bypassed should be processed or not;
means for processing the parameter not to be bypassed if the parameter not to be bypassed should be processed; and
means for storing the parameter not to be bypassed if not.
9. A base station for transmitting a call control/mobility management (CC/MM) message from a synchronous core network to an asynchronous radio network, the radio network having a mobile station (MS), a base transceiver station (BTS), and a base station controller (BSC), the base station comprising:
means for receiving a message received from the synchronous core network, the message having parameters to be bypassed and paramaters not to be bypassed;
10. The base station as recited in claim 9, further comprising means for transmitting the processed message.
11. The base station as recited in claim 9, further including the steps of:
means for if the parameter to be bypassed can not be processed by a parameter mapping, encapsulating the parameter to be bypassed in accordance with a data format of the radio resource controller and generating an encapsulation data; and
12. The method as recited in claim 9, wherein the means for processing includes:
means for storing the parameter not to be bypassed if not. Description
This application is a divisional application of and claims priority to co-pending U.S. patent application Ser. No. 09/628,316, filed Jul. 28, 2000, which is incorporated herein by reference. This application also claims priority, based on 35 U.S.C. �119, to (i) Korean Patent Application No. 1999-30927, filed on Jul. 28, 1999, (ii) Korean Patent Application No. 1999-30928, filed on Jul. 28, 1999, (iii) Korean Patent Application No. 1999-35876, filed on Aug. 27, 1999, and (iv) Korean Patent Application No. 1999-40165, filed on Sep. 17, 1999, which are incorporated herein by reference.
The present invention relates to a method and apparatus for interfacing a synchronous core network with an asynchronous radio network; and, more particularly to a method and apparatus for interfacing a synchronous core network with an asynchronous radio network in a next-generation mobile telecommunications system.
In a conventional synchronous mobile telecommunication system, a synchronous mobile station is connected to a synchronous radio network (for example, a CDMA-2000 radio network), and an ANSI-41 network is connected to a 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 110 denotes a synchronous mobile station, 120 denotes a synchronous radio network (e.g., a code division multiple access-2000 (CDMA-2000) radio network) which performs a data interfacing operation with the synchronous mobile station 110 and includes a synchronous base transceiver station/base station controller(BTS/BSC), and 130 denotes a synchronous core network which is connected to the synchronous radio network 120 and includes a synchronous mobile services switching center (MSC) 131 and an ANSI-41 network 133.
The synchronous mobile station 110 comprises a layer 3 111, a layer 2 114 and a layer 1 115. The layer 3 111 includes a synchronous call control (CC) entity 113 for a call management and a synchronous mobility management (MM) entity 112 for a mobility management.
The layer 1 115 is a physical layer which offers data transport services to higher layers and transfers transport blocks over a radio interface.
The layer 2 114 is a data link layer which includes the 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 layer 3 114 is a network layer which includes the following sub layers, a synchronous radio resource (RR) sub layer, a synchronous call control (CC) entity 113 and a mobility management (MM) entity 112. In synchronous system, the synchronous RR sub layer is not apparently separated from the others in the layer 3 111.
The RR sub layer offers data transfer services on primitive to a lower layer, RLC sub layer, and handles a control plane signaling of the layer 3 111 between a mobile station 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 the mobile station/radio network.
The CC entity 113 handles a call control signaling of layer 3 between the mobile stations and the synchronous radio network.
The synchronous radio network 120 comprises a layer 3 121, a layer 2 122 and a layer 1 123. The layers 3 to 1 121, 122 and 123 in the synchronous radio network 120 correspond respectively to those in the synchronous mobile station 110.
The synchronous core network 130 comprises a layer 3 131,m a layer 2 134 and a layer 1 135. The layers 3 to 1 in the synchronous radio network 130 correspond respectively to those in the synchronous radio network 120.
The asynchronous mobile station 140 comprises a non-access stratum (NAS) part, a layer 3 144, a layer 2 145, and a layer 1 146. In particular, the layer 3 144 includes an access stratum (AS) part. The NAS part includes an asynchronous call control (CC) entity 143 for management of a call and an asynchronous mobility management (MM) entity 142 for management of a mobility. The AS part includes an asynchronous radio resource control (RRC) block. In the asynchronous system, the asynchronous RRC sub layer is apparently separated from the NAS part. Functions of the asynchronous RRC sub layer are the same as those of the synchronous RR sub layer.
The asynchronous radio network 150 comprises a layer 3 151, a layer 2 152, and a layer 1 153. The layer 3 151 of the asynchronous radio network 150 has no NAS part having an asynchronous CC entity and an asynchronous MM entity. The layers 3 to 1 of the asynchronous radio network 150 are connected and correspond respectively to those in the asynchronous mobile station 140 and those in the asynchronous core network 160. However, since the asynchronous radio network 150 does not have the NAS part, i.e., the asynchronous CC entity and the asynchronous MM entity, the NAS parts of the asynchronous mobile station 140 and asynchronous core network 160 are coupled to each other not through the asynchronous radio network 150.
The asynchronous core network 160 comprises a NAS part 161 connected to that of the asynchronous mobile station 140, a layer 3 164 having a AS part (not shown in FIG. 2B), a layer 2 165 and a layer 1 166 connected respectively to those in the asynchronous radio network 150. The NAS part comprises an asynchronous CC entity 163 for management of a call and an asynchronous MM entity 162 for management of mobility.
The more detailed descriptions about layered protocol structures are well taught in 3rd Generation partnership Project (3GPP), Technical Specification group (TSG)—Radio Access Network (RAN): 3G TS25.301 (Radio Interface Protocol Architecture), 3G TS25.302 (Services provided by the physical layer), 3G TS25.321 (MAS Protocol Specification), 3G TS25.322 (RLC Protocol Specification) and 3G TS25.331 (RRC Protocol Specification) in detail.
According to network deployment scenarios, the IMT-2000 system can have the following four interface architectures; first: synchronous mobile station—synchronous radio network—synchronous ANSI-41 network, second: synchronous mobile station—synchronous radio network—asynchronous GSM-MAP network, third: asynchronous mobile station—asynchronous radio network—synchronous ANSI-41 network, and fourth: asynchronous mobile station—asynchronous radio network—asynchronous GSM-MAP network.
Therefore, it is an object of the invention to provide a method and apparatus for interfacing a synchronous core network with an asynchronous mobile station in a next-generation mobile telecommunication system.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENTS OF THE INVENTION
The BPP 844 receives a message to be bypassed from the discriminator at step S1002, and determines whether the message can be converted by a mapping or an encapsulation at step S1004. If the message cannot be converted by the mapping method, in other words, if the message can be converted by the encapsulating method, the BPP 844 encapsulates the message in accordance with the data format of the asynchronous radio resource controller and bypasses an encapsulated message to the asynchronous mobile station at step S1008.
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