WO1997023108A2 - Wireless telecommunications system utilizing cdma radio frequency signal modulation in conjunction with the gsm a-interface telecommunications network protocol - Google Patents

Wireless telecommunications system utilizing cdma radio frequency signal modulation in conjunction with the gsm a-interface telecommunications network protocol Download PDF

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Publication number
WO1997023108A2
WO1997023108A2 PCT/US1996/020764 US9620764W WO9723108A2 WO 1997023108 A2 WO1997023108 A2 WO 1997023108A2 US 9620764 W US9620764 W US 9620764W WO 9723108 A2 WO9723108 A2 WO 9723108A2
Authority
WO
WIPO (PCT)
Prior art keywords
interface
message
subscriber unit
signaling
signaling messages
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1996/020764
Other languages
English (en)
French (fr)
Other versions
WO1997023108A3 (en
Inventor
Michael K. Spartz
Daniel H. Agre
Barry R. Robbins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE69636159T priority Critical patent/DE69636159T2/de
Priority to HK98101118.8A priority patent/HK1002307B/en
Priority to JP52309497A priority patent/JP3989957B2/ja
Priority to UA98073520A priority patent/UA70282C2/uk
Priority to EP96945670A priority patent/EP0811298B1/en
Priority to IL146267A priority patent/IL146267A/en
Priority to CA002241007A priority patent/CA2241007C/en
Priority to BRPI9612482-2A priority patent/BR9612482B1/pt
Priority to HU9900984A priority patent/HU221576B/hu
Priority to AU16893/97A priority patent/AU721589B2/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Priority to IL12500996A priority patent/IL125009A/en
Publication of WO1997023108A2 publication Critical patent/WO1997023108A2/en
Priority to FI972991A priority patent/FI117957B/fi
Publication of WO1997023108A3 publication Critical patent/WO1997023108A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/12—Access point controller devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • H04W12/037—Protecting confidentiality, e.g. by encryption of the control plane, e.g. signalling traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/14—Interfaces between hierarchically different network devices between access point controllers and backbone network device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/02—Inter-networking arrangements

Definitions

  • GSM-MSC 16 provides telephone switching, billing, subscriber unit tracking, subscriber unit authorization, and some handoff control functionality.
  • BSS 15 is comprised of base station controller (BSC) 14 and any base transceiver station(s) (BTS) 12 coupled thereto.
  • BSC base station controller
  • BTS base transceiver station
  • a interface the interface between GSM- MSC 16 and BSS 15 is referred to as the GSM "A interface," which separates the GSM network switching equipment from the time division multiple access (TDMA) based radio equipment.
  • BSC 14 is involved with handoff processing and signal processing resource allocation within BTSs 12 so that multiple subscriber units 10 can conduct telephone calls simultaneously.
  • BTS 12 interfaces the subscriber units 10 via radio frequency (RF) signals and a well defined "over-the-air" protocol to the GSM wireless network.
  • RF radio frequency
  • the CDMA over-the-air channel used to transmit a message to or from subscriber unit 100 is indicated in parentheses next to the associated message with a 'P' indicating a forward link paging channel, an 'A' indicating a reverse link access channel, and a 'T' indicating the forward link user traffic channel or the reverse link user traffic channel depending on the direction of transmission.
  • "traffic channel setup” is the process associated with establishing the forward and reverse link user traffic channel interface between subscriber unit 100 and BTS 102 and is indicated at the far left of the figure.
  • Network setup is the process of establishing a telecommunications network connection with the other telecommunications system involved in the call and is also indicated at the far left.
  • BSC A-interface 206 continues to establish the bi-directional user traffic channel interface by responding to BSS channel request 310 with the transmission of BSS call setup request 312 to call control processor 202.
  • Call control processor 202 allocates selector and service resources for the call and indicates the result of the allocation to BSC A-interface 206 in BSS call setup response 314.
  • BSC A- interface 206 transmits selector call setup request 316 to selection subsystem 204.
  • Selection subsystem 204 initializes the selector resource assigned to process the call and indicates this to BSC A-interface 206 with selector call setup response 318.
  • BSC A-interface 206 transmits radio link setup request 319 to selection subsystem 204.
  • selector subsystem 204 Upon receipt of cipher mode complete message 564, selector subsystem 204 begins to perform encryption-decryption on all additional signaling and call data associated with the telephone call. In the preferred embodiment of the invention, this encryption is performed via the use of private channel codes in accordance with the IS-95 specification; however, the use of alternative encryption methods is consistent with the operation of the present invention. Selection subsystem 204 then transmits BSS cipher mode complete message 566 to BSC A-interface 206. BSC A-interface 206 responds by transmitting cipher mode complete command 568 to GSM-MSC 106 in accordance with the GSM A- interface protocol indicating the configuration for encryption is complete.
  • GSM-MSC 106 Upon receipt of assignment complete message 594, GSM-MSC 106 transmits alerting message 596 to BSC A-interface 206 in accordance with the GSM A-interface protocol, which responds by transparently forwarding the message to selection subsystem 204 via transport message 598 which contains the alerting message. Selection subsystem 204 then continues the transparent transport by transmitting transport message 600 containing the alerting message to subscriber unit 100 via the forward link traffic channel. The alerting message indicates that subscriber unit 100 should start to generate the ring back tone.
  • selection subsystem 204 Upon receipt of release resource response, selection subsystem 204 transmits radio release response 664 to BSC A-interface 206 which responds by transmitting call release request 666 to selection subsystem 204. Selection subsystem 204 then transmits call release response to BSC A-interface 206 and releases the selection resources associated with the telephone call. BSC A-interface 206 then transmits deallocate request 671 to call control processor 202 indicating that the selection and service resources associated with the telephone call have been released, and are available for processing other calls. BSC A- interface 206 also indicates that the call has been released to GSM-MSC 106 by transmitting clear complete 675 in accordance with the GSM A-interface protocol. Clear complete 675 indicates to GSM-MSC 106 that the call processing resources are now available. Call control processor 202 responds to deallocate request 671 by transmitting deallocate response 667 to BSC A- interface 206. Upon receipt of deallocate response 667 by BSC A-interface 206, the call has been released.
  • FIG. 9 is a message sequence diagram illustrating the signaling messages exchanged during network initiated call release performed in accordance with one embodiment of the invention.
  • a network initiated call release is the disconnection of a telephone call in response to a request originating at a system other than a subscriber unit 100 of FIG. 2.
  • the network initiated call release begins during an ongoing telephone call or other communication.
  • GSM-MSC 106 initiates the network teardown by transmitting disconnect message 772 to BSC A-interface 206 in accordance with the GSM A-interface protocol.
  • BSC A-interface 206 responds by forwarding transport message 757 containing the disconnect to selection subsystem 204 which forwards transport message 753 also containing the disconnect to subscriber unit 100 via the forward link traffic channel.
  • Selection subsystem then forwards transport message 855 containing the authentication request to subscriber unit 100 via the forward link traffic channel.
  • Subscriber unit 100 passes the transported authentication request to its GSM based message processing portion which responds to authentication request 855 by transmitting transport authentication response 856 to selector subsystem 204 via the reverse link traffic channel.
  • Selection subsystem 204 transparently forwards the authentication response by transmitting transport message 857 to BSC A-interface 206.
  • BSC A-interface 206 then transmits authentication response 858 to GSM-MSC 106 in accordance with the GSM A-interface protocol.
  • GSM-MSC 106 responds by transmitting cipher mode command 859 to BSC A-interface 206.
  • GSM-MSC 106 then transmits ID request 874 to BSC A-interface 206 in accordance with the GSM A-interface protocol, and BSC A-interface 206 responds by forwarding the ID request via transport message 872 to selection subsystem 204.
  • Selection subsystem 204 then transmits transport message 870 containing the ID request to subscriber unit 100 via the forward link traffic channel.
  • the GSM based message processing portion of subscriber unit 100 responds by generating an ID response and subscriber unit 100 transmits that ID response within transport message 880 to selection subsystem 204 via the reverse link traffic channel.
  • BTS 102 releases the resources used to process the forward and reverse link traffic channels and then transmits end reverse link traffic channel indication 908 and disconnect response 910 to selection subsystem 204.
  • Selection subsystem 204 transmits release resource request 914 to BTS 102, and BTS 102 responds by transmitting release resource response 916.
  • release resource response 916 selection subsystem 204 transmits BSS radio release response 918 to BSC A-interface 206, which responds by transmitting BSS call release request 920 to selection subsystem 204.
  • Selection subsystem 204 then transmits BSS call release response 922 to BSC A-interface 206, and releases the selection resources associated with the telephone call.
  • digital signal processing system 984 is comprised of a digital signal processor (DSP) controlled by software stored in memory system (Not shown). Additionally, control system 986 is comprised of a microprocessor also controlled by software instructions stored in a memory system (Not shown). Portions of the software instructions used to control the microprocessor are used to implement interface control 987 and network control 989. In alternative embodiments of the invention, control system 986 and digital signal processing system 984 may be implemented via the use of one or more custom designed integrated circuits where network control 989 and interface control are a portion of the integrated circuits used to implement control system 986. Furthermore, while in the configuration shown, control system 986 is coupled between input output system 988 and digital signal processing system 984. In alternative embodiments of the invention each of those three systems may be coupled together via the use of mutually shared data bus. Additionally, control system 986 and digital signal processing system 984 may share the use of the same memory system via the shared data bus, or by placement on the same integrated circuit.
  • DSP digital signal processor

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)
PCT/US1996/020764 1995-12-20 1996-12-18 Wireless telecommunications system utilizing cdma radio frequency signal modulation in conjunction with the gsm a-interface telecommunications network protocol Ceased WO1997023108A2 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
HU9900984A HU221576B (hu) 1995-12-20 1996-12-18 Eljárás és bázisállomási alrendszer jeltovábbítási üzenetek feldolgozására vezeték nélküli távközlési rendszerben
JP52309497A JP3989957B2 (ja) 1995-12-20 1996-12-18 Ｇｓｍ ａ―インタフェース電気通信ネットワークプロトコルとともに、ｃｄｍａ無線周波数信号変調を活用する無線電気通信システム
UA98073520A UA70282C2 (en) 1995-12-20 1996-12-18 Method for processing signal messages at the base method for processing signal messages at the base station of a wireless communication system (varianstation of a wireless communication system (variants), the base station of a wireless communication ts), the base station of a wireless communication system, and the station controller system, and the station controller
EP96945670A EP0811298B1 (en) 1995-12-20 1996-12-18 Wireless telecommunications system utilizing cdma radio frequency signal modulation in conjunction with the gsm a-interface telecommunications network protocol
IL146267A IL146267A (en) 1995-12-20 1996-12-18 Wireless communications systems utilizing cdma radio frequency signal modulation in conjunction with the gsm a-interface telecommunications network protocol
CA002241007A CA2241007C (en) 1995-12-20 1996-12-18 Wireless telecommunications system utilizing cdma radio frequency signal modulation in conjunction with the gsm a-interface telecommunications network protocol
BRPI9612482-2A BR9612482B1 (pt) 1995-12-20 1996-12-18 sistema de telecomunicações sem fio que utiliza modulação de sinal com frequencia de rádio cdma em conjunto com o protocolo de rede de telecomunicações gsm da interface a.
DE69636159T DE69636159T2 (de) 1995-12-20 1996-12-18 Schnurloses telekommunikationssystem mit cdma funksignalmodulation in zusammenhang mit einem gsm a-schnittstellen-telekommunikationsnetz-protokoll
HK98101118.8A HK1002307B (en) 1995-12-20 1996-12-18 Wireless telecommunications system utilizing cdma radio frequency signal modulation in conjunction with the gsm a-interface telecommunications network protocol
AU16893/97A AU721589B2 (en) 1995-12-20 1996-12-18 Wireless telecommunications system utilizing CDMA radio frequency signal modulation in conjunction with the GSM A-interface telecommunications network protocol
IL12500996A IL125009A (en) 1995-12-20 1996-12-18 Wireless communications systems utilizing cdma radio frequency signal modulation in conjunction with the gsm a-interface telecommunications network protocol
FI972991A FI117957B (fi) 1995-12-20 1997-07-14 Langaton tietoliikennejärjestelmä, joka käyttää CDMA-radiotaajuussignaalimodulaatiota GSM-A-rajapinnan tietoliikenneverkkoprotokollan kanssa

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US575,413 1984-01-30
US08/575,413 US5878036A (en) 1995-12-20 1995-12-20 Wireless telecommunications system utilizing CDMA radio frequency signal modulation in conjunction with the GSM A-interface telecommunications network protocol

Publications (2)

Publication Number Publication Date
WO1997023108A2 true WO1997023108A2 (en) 1997-06-26
WO1997023108A3 WO1997023108A3 (en) 1997-12-24

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PCT/US1996/020764 Ceased WO1997023108A2 (en) 1995-12-20 1996-12-18 Wireless telecommunications system utilizing cdma radio frequency signal modulation in conjunction with the gsm a-interface telecommunications network protocol

Country Status (20)

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US (2) US5878036A (enExample)
EP (1) EP0811298B1 (enExample)
JP (1) JP3989957B2 (enExample)
KR (1) KR100427839B1 (enExample)
CN (6) CN100355301C (enExample)
AR (1) AR005256A1 (enExample)
AT (1) ATE327641T1 (enExample)
AU (1) AU721589B2 (enExample)
BR (1) BR9612482B1 (enExample)
CA (1) CA2241007C (enExample)
DE (1) DE69636159T2 (enExample)
FI (1) FI117957B (enExample)
HU (1) HU221576B (enExample)
IL (2) IL146267A (enExample)
MX (1) MX9804943A (enExample)
RU (1) RU2172077C2 (enExample)
TW (1) TW362315B (enExample)
UA (1) UA70282C2 (enExample)
WO (1) WO1997023108A2 (enExample)
ZA (1) ZA9610717B (enExample)

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