Method and apparatus for improved control over cellular systems

• US 5,884,147 A
• Filed: 01/03/1996
• Issued: 03/16/1999
• Est. Priority Date: 01/03/1996
• Status: Expired due to Term

• Current Assignee: F Poszat Hu LLC (Intellectual Ventures LLC)
• Original Assignee: Metawave Communications Corp.
• Inventors: Reudink, Douglas O., Reudink, Mark
• Primary Examiner(s): Bost, Dwayne D.
• Assistant Examiner(s): WYCHE, MYRON
• Application Number:
  US08/582,525
• Time in Patent Office: 1,168 Days
• Field of Search: 455/62, 455/63, 455/67.1, 455/67.3, 455/436, 455/438, 455/439, 455/440, 455/441, 455/452, 455/453, 455/446, 455/509, 455/513
• US Class Current: 455/67.11
• CPC Class Codes: H04W 16/24 Cell structures
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition

Abstract

System and apparatus for actively managing calls in a wireless cellular network. A host receives input data from a plurality of cells regarding the status of calls in that cell. Input data may include call variables such as carrier signal strength over interference (C/I), forward and reverse link power, beam and channel assignments, handoff status, and triangulation data regarding location/movement of active calls. The host processes the input data with reference to known cell neighborhoods, and creates output data for each cell that includes information on other active calls in the neighborhood. The output data then updates the cell with information regarding active calls in the cell'"'"'s vicinity. The cell may then make adjustments to call variables taking into account local interference conditions. Further, through reference to (1) fixed data regarding the network such as topography or statistics, and/or (2) immediate past historical data regarding active calls, the host may also create output data taking into account predicted impending interference conditions.

Claims

1. A method for managing a plurality of wireless communications within a cellular network, comprising the steps of:

monitoring the transmission characteristics of ones of the wireless communications; and

optimizing the transmission characteristics of wireless communications according to monitored transmission characteristics of nearby wireless communications;

wherein said optimizing step further comprises the steps of;

modifying ones of the transmission characteristics so as to allow ones of the wireless communications to continue at artificially sub-optimum transmission conditions; and

temporarily blocking ones of the wireless communications if the artificially sub-optimum transmission conditions are not feasible for wireless communications.

2. The method of claim 1, wherein the step of monitoring wireless communication transmission characteristics includes monitoring for one or more transmission characteristics selected from the group consisting of:

(a) communication signal strength;

(b) communication interference level;

(c) forward link signal power;

(d) reverse link signal power;

(e) cell assignment;

(f) antenna beam assignment;

(g) communication channel assignment;

(h) handoff status;

(i) territorial location of wireless communications within the cells;

(j) directional travel of mobile wireless communications within the cells; and

(k) velocity of mobile wireless communications within the cells.

3. The method of claim 1, wherein the step of optimizing wireless communication transmission characteristics includes modifying one or more transmission characteristics selected from the group consisting of:

(a) communication signal strength;

(b) forward link signal power;

(c) reverse link signal power;

(d) cell assignment;

(e) antenna beam assignment;

(f) communication channel assignment; and

(g) handoff status.

4. The method of claim 1, wherein the step of monitoring wireless communication transmission characteristics is performed centrally.

5. The method of claim 4, wherein the step of optimizing wireless communication transmission characteristics is also performed centrally.

6. A method for managing a plurality of wireless communications within a cellular network, comprising the steps of:

monitoring the transmission characteristics of ones of the wireless communications;

informing ones of the cells of the transmission characteristics of wireless communications monitored in nearby cells; and

optimizing the transmission characteristics of wireless communications according to information received regarding the transmission characteristics of wireless communications in nearby cells

wherein said optimizing step further comprises the steps of;

modifying ones of the transmission characteristics so as to allow ones of the wireless communications to continue at artificially sub-optimum transmission conditions; and

temporarily blocking ones of the wireless communications if the artificially sub-optimum transmission conditions are not feasible for wireless communications.

7. A method for managing a plurality of wireless communications within a cellular network, comprising the steps of:

monitoring the transmission characteristics of ones of the wireless communications;

discriminating between monitored wireless communication transmission characteristics according to a predetermined standard as to whether said monitored transmission characteristics need optimizing in real time or not;

for wireless communication transmission characteristics meeting said standard, optimizing said transmission characteristics in real time; and

for wireless communication transmission characteristics not meeting said standard, optimizing said transmission characteristics on a schedule slower than real time.

8. A method for managing a plurality of wireless communications within a cellular network, comprising the steps of:

monitoring the transmission characteristics of ones of the wireless communications;

predicting future wireless communication transmission characteristics based on said monitored wireless communication transmission characteristics;

discriminating between said predicted future wireless communication transmission characteristics according to a predetermined standard as to whether said monitored transmission characteristics need optimizing in real time or not;

for predicted future wireless communication transmission characteristics meeting said standard, optimizing said monitored transmission characteristics in real time; and

for predicted future wireless communication transmission characteristics not meeting said standard, optimizing said monitored transmission characteristics on a schedule slower than real time.

9. The method of claim 8, wherein the step of predicting wireless communication transmission characteristics is also performed with reference to pre-recorded network data.

10. The method of claim 9, wherein the prerecorded network data include wireless communication activity statistics.

11. The method of claim 9, wherein the prerecorded network data include territorial topography.

12. The method of claim 9, wherein the prerecorded network data include prevailing signal interference level cartography.

13. A system for managing a plurality of wireless communications within a cellular network, comprising:

means for monitoring the transmission characteristics of ones of the wireless communications; and

means for optimizing the transmission characteristics of wireless communications according to monitored transmission characteristics of nearby wireless communications;

wherein said optimizing means further comprises;

means for modifying ones of the transmission characteristics so as to allow ones of the wireless communications to continue at artificially sub-optimum transmission conditions; and

means for temporarily blocking ones of the wireless communications if the artificially sub-optimum transmission conditions are not feasible for wireless communications.

14. The system of claim 13, wherein the means for monitoring wireless communication transmission characteristics monitors one or more transmission characteristics selected from the group consisting of:

(a) communication signal strength;

(b) communication interference level;

(c) forward link signal power;

(d) reverse link signal power;

(e) cell assignment;

(f) antenna beam assignment;

(g) communication channel assignment;

(h) handoff status;

(i) territorial location of wireless communications within the cells;

(j) directional travel of mobile wireless communications within the cells; and

(k) velocity of mobile wireless communications within the cells.

15. The system of claim 13, wherein the means for optimizing wireless communication transmission characteristics modifies one or more transmission characteristics selected from the group consisting of:

(a) communication signal strength;

(b) forward link signal power;

(c) reverse link signal power;

(d) cell assignment;

(e) antenna beam assignment;

(f) communication channel assignment; and

(g) handoff status.

16. The system of claim 13, wherein the means for monitoring wireless communication transmission characteristics performs said monitoring centrally.

17. The system of claim 16, wherein the means for optimizing wireless communication transmission characteristics also performs said optimizing centrally.

18. A system for managing a plurality of wireless communications within a cellular network, comprising:

means for monitoring the transmission characteristics of ones of the wireless communications;

means for informing ones of the cells of the transmission characteristics of wireless communications monitored in nearby cells; and

means for optimizing the transmission characteristics of wireless communications according to information received regarding the transmission characteristics of wireless communications in nearby cells

wherein said means for optimizing further comprises;

means for modifying ones of the transmission characteristics so as to allow ones of the wireless communications to continue at artificially sub-optimum transmission conditions; and

means for temporarily blocking ones of the wireless communications if the artificially sub-optimum transmission conditions are not feasible for wireless communications.

19. A system for managing a plurality of wireless communications within a cellular network, comprising:

means for monitoring the transmission characteristics of ones of the wireless communications;

means for discriminating between monitored wireless communication transmission characteristics according to a predetermined standard as to whether said monitored transmission characteristics need optimizing in real time or not;

means for optimizing wireless communication transmission characteristics meeting said standard in real time; and

means for optimizing wireless communication transmission characteristics not meeting said standard on a schedule slower than real time.

20. A system for managing a plurality of wireless communications within a cellular network, comprising:

means for monitoring the transmission characteristics of ones of the wireless communications;

means for predicting future wireless communication transmission characteristics based on said monitored wireless communication transmission characteristics;

means for discriminating between said predicted future wireless communication transmission characteristics according to a predetermined standard as to whether said monitored transmission characteristics need optimizing in real time or not;

for predicted future wireless communication transmission characteristics meeting said standard, means for optimizing said monitored transmission characteristics in real time; and

for predicted future wireless communication transmission characteristics not meeting said standard, means for optimizing said monitored transmission characteristics on a schedule slower than real time.

21. The system of claim 20, wherein the means for predicting wireless communication transmission characteristics performs said prediction with reference to pre-recorded network data.

22. The system of claim 21, wherein the prerecorded network data include wireless communication activity statistics.

23. The system of claim 22, wherein the pre-recorded network data include territorial topography.

24. The system of claim 21, wherein the prerecorded network data include prevailing signal interference cartography.

25. A method for compiling prevailing signal interference data for use in managing wireless communications in a cellular network, comprising the steps of:

dividing ones of the cells into zones;

monitoring ones of the zones for signal interference levels prevailing therein;

mapping a plurality of said monitored zones with their associated monitored prevailing signal interference levels to create an interference map;

anticipating the likely future path of a tracked mobile station moving within said monitored zones;

predicting future signal transmission conditions likely to prevail between a base station and said tracked mobile station as said tracked mobile station moves along an anticipated future path;

predicting future adjustments to wireless communications characteristics likely to optimize wireless communications as said tracked mobile station encounters said predicted future signal transmission conditions;

wherein said predicting steps predict said future signal conditions and said future adjustments using said interference map;

scheduling said predicted future adjustments according to anticipated travels of said tracked mobile station; and

executing said predicted adjustments according to said schedule.

26. The method of claim 25, wherein each zone is monitored by a separate narrow beam antenna.

27. The method of claim 25 wherein said monitoring step is performed continuously, regardless of any lack of wireless communication activity.

28. The method of claim 25, in which the step of monitoring is performed centrally.

29. The method of claim 25, in which the step of mapping is performed centrally.

30. The method of claim 25, in which the step of mapping further comprises:

remotely mapping ones of the zones with their associated monitored prevailing signal interference levels to compile a plurality of substantially contiguous maps; and

centrally combining ones of said substantially contiguous maps to compile a regional map.

31. A method of managing wireless communications between a base station and at least one active mobile station within a cellular network, comprising the steps of:

monitoring transmission characteristics of the wireless communications;

tracking the territorial movement of ones of the active mobile stations;

anticipating the likely future travels of said tracked mobile stations;

predicting future signal transmission conditions likely to prevail between the base station and the active mobile stations as said tracked mobile stations move along their anticipated travels;

predicting future adjustments to ones of the wireless communications transmission characteristics likely to optimize wireless communications as said tracked mobile stations encounter said predicted future signal transmission conditions;

scheduling said adjustments according to the anticipated travels of said tracked mobiles; and

executing said adjustments according to said schedule.

32. The method of claim 31, wherein the step of anticipating the likely future travels of mobile stations includes reference to one or more data sets selected from the group consisting of:

(a) pre-established topographical data;

(b) current active mobile station movement data;

(c) historical mobile station movement data;

(d) current wireless communication density data;

(e) historical wireless communication density data; and

(f) historical peak-usage mobile station activity data.

33. The method of claim 31, wherein the step of predicting likely future signal transmission conditions includes reference to one or more data sets selected from the group consisting of:

(a) pre-established topographical data;

(b) current regional signal interference cartographical data;

(c) historical regional signal interference cartographical data; and

(d) anticipated path data for one or more current active calls.

34. The method of claim 31, wherein the step of predicting future adjustments includes reference to historical data on adjustments to wireless communications transmission characteristics.

35. The method of claim 31, wherein the step of executing said adjustments includes modifying ones of the transmission characteristics so as to allow ones of the wireless communications to continue at artificially sub-optimum transmission conditions for the sake of improving transmission conditions for other wireless communications.