Wireless access for local exchange carriers

• US 6,097,966 A
• Filed: 06/06/1997
• Issued: 08/01/2000
• Est. Priority Date: 06/06/1997
• Status: Expired due to Term

• Current Assignee: Blackberry Limited
• Original Assignee: Nortel Networks Limited (Nortel Networks Corporation)
• Inventors: Hanley, Donald V.
• Primary Examiner(s): Hunter, Daniel S.
• Assistant Examiner(s): Armstrong, Darnell R.
• Application Number:
  US08/871,007
• Time in Patent Office: 1,152 Days
• Field of Search: 455/461, 455/555, 455/422, 455/424, 455/426, 455/428, 455/433, 455/436, 455/445, 455/462
• US Class Current: 455/555
• CPC Class Codes: H04W 8/02 Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
• CPC Class Codes: H04W 88/18 Service support devices; Network management devices

Abstract

The Mobility Node (101) of the present invention maps signals, dialed digits, or other information from the mobile (140-142) to the appropriate protocols of the local exchange carrier'"'"'s (LEC) Class 5 switch (120-123) and vice versa. If the signal does not have an LEC or base station equivalent, the Mobility Node (101) performs the appropriate processing. Multiple Mobility Nodes (101) are connected by a predetermined protocol link to enable inter-system communication.

Claims

1. A wireless access system that enables a local exchange carrier to provide wireless access to wireline services by a mobile radiotelephone, the system comprising:

a plurality of cells, each cell comprising a base station and antenna for communicating with the radiotelephone;

a first set of local exchange carrier switches, each switch of said first set of local exchange carrier switches having a first set of input/output ports and a second set of input/output ports, each input/output port of said first set of input/output ports being assigned to a radiotelephone, each input/output port of said second set of input/output ports being coupled to a wireline subscriber unit, the first set of local exchange carrier switches coupled to other sets of local exchange carrier switches; and

a Mobility Node connected to the input/output ports of said first set of input/output ports of each switch of said set of local exchange carrier switches, at least on cell of the plurality of cells, and a subscriber database, each Mobility Node additionally connected, through a predetermined protocol line, to other Mobility Nodes of the plurality of Mobility Nodes, each Mobility Node comprising a processor that converts predetermined signals from a first protocol to a second protocol.

2. The system of claim 1 wherein the predetermined protocol line is an IS-41 line.

3. The system of claim 1 wherein the first protocol is a radio frequency protocol and the second protocol is a local exchange carrier protocol.

4. The system of claim 3 wherein the radio frequency protocol is IS-95 and the local exchange carrier protocol is TR303.

5. The system of claim 1 and further including each Mobility Node having a capability for handling hand-offs of the mobile radiotelephone from a first cell to a second cell, each of the plurality of cells.

6. A method for a local exchange carrier to provide wireline services to a mobile radiotelephone through a local exchange carrier Class 5 office switch, the mobile radiotelephone communicating with base stations that are coupled to a port of the Class 5 office switch assigned to said mobile radiotelephone through a port of a Mobility Node assigned to said mobile radio telephone, the method comprising the steps of:

monitoring, for a received signal, the port in the Mobility Node;

if the received signal is from a Class 5 office switch, transforming the received signal from a local exchange carrier protocol signal to a radio frequency protocol signal; and

if the received signal is from a base station, transforming the received signal from a radio frequency protocol signal to a local exchange carrier protocol signal.

7. The method of claim 6 and further including the step of the Mobility Node processing the received signal if an equivalent protocol does not exist to which the received signal can be mapped.