Integration of remote microcell with CDMA infrastructure

• US 6,950,421 B2
• Filed: 12/13/2001
• Issued: 09/27/2005
• Est. Priority Date: 06/01/1998
• Status: Expired due to Term

• Current Assignee: SBC Properties, L.P.
• Original Assignee: Sbc Knowledge Ventures, L.P.
• Inventors: Joyce, Timothy Jason, Fiut, Brian Douglas
• Primary Examiner(s): NGUYEN, STEVEN H D
• Application Number:
  US10/022,147
• Publication Number:
  US 20020122404A1
• Time in Patent Office: 1,384 Days
• Field of Search: 370/252, 370/335, 370/342, 455/562.1, 455 6711- 6716, 455/561, 398 77- 78, 398 25- 33
• US Class Current: 370/342
• CPC Class Codes: H04B 2201/70702 Intercell-related aspects
• CPC Class Codes: H04B 7/2609 Arrangements for range control, e.g. by using remote antennas
• 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: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 4/18 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

Abstract

An integrated microcellular communication system and a CDMA communication system having signal advancing capabilities wherein a signal is advanced to compensated for the time delay induced by communication signal travel over a fiber optic connections between a base station cellsite and a remote microcell.

Claims

1. A microcellular communication system integrated with a code division multiple access communications system comprising:

said microcellular communication system having at least one remote microcell;

said code division multiple access (CDMA) communications system comprising;

a base station in communication with said at least one remote microcell;

at least one in communication with said base station; and

signal advancing capability;

means for measuring a fiber length of optical fiber connections between said base station and said at least one remote microcell in said CDMA communications system;

means for measuring a loss in said fiber optic connections;

means for measuring remote power output of said at least one remote microcell;

means for calculating a value of an advance of a CDMA signal;

means for translating said value to a database for advancing said CDMA signal allowing said at least one remote microcell to communicate with said at least one face; and

means for setting output levels of said CDMA system from said value.

2. The integrated system as claimed in claim 1 further comprising means for testing said integrated system for proper operation.

3. The integrated system as claimed in claim 1 wherein said microcellular communications system further comprises a stand-alone microcellular communications system.

4. The integrated system as claimed in claim 3 further comprising hardware for interconnecting said at least one remote microcell and said at least one face.

5. The integrated system as claimed in claim 4 further comprising:

a combiner for each face to be integrated;

a meter connected to said CDMA system for measuring output power at said at least one face;

a transmit cable connected between each of said combiners;

a receive cable connected to each of said combiners;

a termination for each of said receive cables.

6. The integrated system as claimed in claim 1 wherein said microcellular communication system further comprises a simulcast microcellular communication system.

7. The integrated system as claimed in claim 6 further comprising hardware for interconnecting said at least one remote microcell-l and said at least one face.

8. The integrated system as claimed in claim 7 further comprising:

a transmit cable connected to each of said at least one faces;

a combiner connected to each of said transmit cables;

an interface module for said remote microcell wherein each of said transmit cables are connected to said interface module;

a receive cable connected between said interface module and said at least one face;

a combiner connected to said receive cable; and

an attenuator connected to said combiner and said receive cable.

9. The integrated system as claimed in claim 1 wherein said microcell communication system further comprises a transmit antenna and a receive antenna and said means for calculating an advance of said CDMA signal further comprises:

means for calculating propagation delay of said transmit antenna;

means for calculating propagation delay of said receive antenna;

means for selecting a lowest value of said propagation delay for both said transmit and said receive antennas;

means for recording said selected lowest values;

means for calculating a maximum differential of all delay calculations for said remote microcell;

means for calculating a sector size of said face;

means for calculating a search window size for said face being integrated with said remote microcell;

means for calculating an actual input analog composite power on said face being integrated with said remote microcell;

means for calculating a total gain for said at least one remote microcell; and

means for calculating an actual gain for said at least one remote microcell; and

means for calculating CDMA input power for said at least one remote microcell.