§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US6178337B1 Expired / Lapsed US ⏱️ 0.0 years remaining

Wireless telecommunications system utilizing CDMA radio frequency signal modulation in conjuction with the GSM A-interface telecommunications network protocol

Assignee: Qualcomm Inc
•
Filing: 1997-06-19
•
Granted: 2001-01-23
•
Expires: 2017-06-19
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A method and apparatus for operating a wireless telecommunication system utilizing code division multiple access (CDMA) over-the-air with a Global System for Mobile communications (GSM) A-interface based network is described. A CDMA radio frequency (RF) signal interface provides a bi-directional interface to a subscriber unit, and a Global System for Mobile (GSM) communications A-interface SS7 transport provides a bi-directional interface with GSM mobile services switching center (MSC). Additionally, a transparent message transport is provided over which signaling messages defined in the GSM A-interface protocol are exchanged between the GSM MSC and a subscriber unit. Other signaling message generating by the GSM MSC and subscriber unit are processed and various actions are taken in response, including the configuration and control of signal processing resources. This configuration and control includes the allocation of vocoding and devocoding resources in accordance with the requested type of service, and the invocation of CDMA based encryption capabilities. Other actions include the allocation of CDMA traffic channel processing resources and selection resources at the start of a signaling exchange between the subscriber unit and the BSS or MSC. These resources process both voice and data calls, and signaling messages, such as registrations, from the subscriber unit. The CDMA traffic channel resources are used to perform the IS-95 style CDMA signal processing functions including modulation and demodulation.

Inventors

  • 👤 Michael K. Spartz
  • 👤 Daniel H. Agre
  • 👤 Barry R. Robbins

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 02:07
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/12; H04L; H04L63/00; H04L63/04; H04L63/0428; H04W12/00; H04W12/03; H04W12/037; H04W92/00; H04W92/04; H04W92/14; H04W4/00; H04W4/18; H04W92/02

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 130 words
A base station controller, including: a) a CDMA RF interface module configured to provide a bi-directional interface with a subscriber unit; b) a GSM A-interface transport module configured to provide a bi-directional interface with GSM MSC; c) a transparent signaling transport module, coupled to the CDMA RF interface module and to the GSM A-interface transport module; d) signal processing resources; and d) a processing and service conversion module, coupled to the signal processing resources, the CDMA RF interface module, the GSM A-interface transport module, and to the transparent signaling transport module, the processing and service conversion module being configured to receive and examine signaling messages from the CDMA RF interface module and the GSM A-interface and to configure and control the signal processing resources in response to such signaling messages.
Claim 2
Dependent Claim 130 words
A base station controller, including: a) a CDMA RF interface module configured to provide a bi-directional interface with a subscriber unit; b) a GSM A-interface transport module configured to provide a bi-directional interface with GSM MSC; c) a transparent signaling transport module, coupled to the CDMA RF interface module and to the GSM A-interface transport module; d) signal processing resources; and d) a processing and service conversion module, coupled to the signal processing resources, the CDMA RF interface module, the GSM A-interface transport module, and to the transparent signaling transport module, the processing and service conversion module being configured to receive and examine signaling messages from the CDMA RF interface module and the GSM A-interface and to configure and control the signal processing resources in response to such signaling messages.
Claim 3
Dependent Claim 60 words
The base station controller of claim 1 , wherein the signaling messages received from the GSM A-interface transport module are received by the GSMA-interface transport as messages defined in the GSM A-interface protocol and the signaling messages received from the CDMA RF interface module are received by the CDMA RF interface as messages defined in the CDMA air interface protocol.
Claim 4
Dependent Claim 30 words
The base station controller of claim 1 , wherein the configuration and control of the processing resources includes allocation of vocoding resources in accordance with the requested type of service.
Claim 5
Dependent Claim 30 words
The base station controller of claim 1 , wherein the configuration and control of the processing resources includes allocation of devocoding resources in accordance with the requested type of service.
Claim 6
Dependent Claim 24 words
The base station controller of claim 1 , wherein the configuration and control of the processing resources includes invocation of CDMA based encryption capabilities.
Claim 7
Dependent Claim 15 words
The base station controller of claim 5 , wherein the encryption capabilities are CDMA based.
Claim 8
Dependent Claim 41 words
The base station controller of claim 1 , wherein the configuration and control of the processing resources includes allocation of CDMA traffic channel processing resources at the start of the signaling exchange between a subscriber unit and the base station controller.
Claim 9
Dependent Claim 41 words
The base station controller of claim 1 , wherein the configuration and control of the processing resources includes allocation of CDMA traffic channel selection resources at the start of the signaling exchange between a subscriber unit and the base station controller.
Claim 10
Dependent Claim 41 words
The base station controller of claim 1 , wherein the transparent signaling transport module is configured to allow messages received by the GSM A-interface transport module to be transmitted by the CDMA RF interface module without intermediate examination, modification, or use.
Claim 11
Dependent Claim 31 words
The base station controller of claim 9 , wherein at least some of the messages received by the GSM A-interface transport module are direct transfer application messages defined in GSM specifications.

References Cited (Backward Citations)

US5590133A Cited
US5749053A Cited
US5978679A Cited
US5825760A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2004-01-23 2004-07-24 2005-01-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2008-01-23 2008-07-24 2009-01-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2012-01-23 2012-07-24 2013-01-23 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag