Spread spectrum wireless communication system

• US 6,621,852 B2
• Filed: 12/14/2001
• Issued: 09/16/2003
• Est. Priority Date: 06/03/1991
• Status: Expired due to Fees

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Vanderpool, Jeffrey S.
• Primary Examiner(s): VO, DON NGUYEN
• Application Number:
  US10/023,090
• Publication Number:
  US 20020085618A1
• Time in Patent Office: 641 Days
• Field of Search: 375/130, 375/219, 375/220, 370/311, 370/334, 370/328, 370/329, 370/331, 455/445, 455/507, 455/515, 455/554, 455/555, 379/196, 379/197, 379/198, 379/225, 379/231, 379/232, 379/234
• US Class Current: 375/130
• CPC Class Codes: H04B 7/2618 using hybrid code-time division multiple access [CDMA-TDMA]
• CPC Class Codes: H04B 7/2628 using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] H04B7/2618 takes precedence
• CPC Class Codes: H04J 13/00 Code division multiplex systems for frequency hopping H04B1/713
• CPC Class Codes: H04W 36/0066 of control information between different types of networks in order to establish a new radio link in the target network
• CPC Class Codes: H04W 36/14 Reselecting a network or an air interface
• CPC Class Codes: H04W 36/142 over the same radio air interface technology
• CPC Class Codes: H04W 4/16 Communication-related supplementary services, e.g. call-transfer or call-hold
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 84/16 WPBX [Wireless Private Branch Exchange]

Abstract

A wireless communication system employing spread-spectrum communication techniques includes a plurality of base stations that may be coupled directly or indirectly to a telephone network, and may initiate or receive calls on the telephone network. A plurality of user stations may include a spread-spectrum transmitter and receiver and may provide for dynamic connection to selected base stations. In one embodiment, one or more of the base stations may include an augmented base station and include means for communicating with the user stations over an alternative communication path distinct from a spread-spectrum path, such as over a cellular communication path.

Claims

1. A wireless communication system, comprising:

a first base station coupled to a telephone network;

a first user station configured for completing a first communication path with said first base station and configured for initiating and receiving a call on the telephone network, the first communication path employing a spread-spectrum communication technique;

a second base station coupled to the telephone network;

a second user station configured for completing a second communication path with said second base station and configured for initiating and receiving a call on the telephone network, the second communication path employing a spread-spectrum communication technique; and

a private exchange telephone system coupled between said first base station and said second base station, said private exchange telephone system being configured for routing a call between said first user station and said second user station without use of the telephone network.

2. The system of claim 1, wherein said first and second base stations are coupled to the telephone network through said private exchange telephone system.

3. The system of claim 1, wherein said private exchange telephone system comprises a PBX.

4. The system of claim 1, wherein said private exchange telephone system comprises a Centrex system.

5. The system of claim 1, wherein said private exchange telephone system comprises a key-type system.

6. The system of claim 1, wherein said first user station is configured for breaking the first communication path with said first base station and completing a third communication path with said second base station.

7. The system of claim 6, wherein said first user station is configured for being handed-off from said first base station to said second base station.