Automatic determination of component types and locations for wireless network design

• US 9,288,687 B2
• Filed: 06/30/2015
• Issued: 03/15/2016
• Est. Priority Date: 01/03/2013
• Status: Expired due to Fees

• Current Assignee: CONSISTEL (Singapore) Pte Ltd.
• Original Assignee: CONSISTEL (Singapore) Pte Ltd.
• Inventors: Bassiri, Masoud, Forughian, Tooraj, Campbell, Duncan Karl Gordon, Zhang, Hua
• Primary Examiner(s): Siddiqui, Kashif
• Application Number:
  US14/788,634
• Publication Number:
  US 20150382204A1
• Time in Patent Office: 259 Days
• US Class Current: 1/1
• CPC Class Codes: H04W 16/20 for indoor coverage or short range network deployment
• CPC Class Codes: H04W 88/085 Access point devices with remote components

Abstract

A computer implemented method and system for determining component types and locations in a network design. The method includes automatically determining component types and locations according to a riser location as an entry point and antenna locations as a plurality of end points. The automatically determining component types and locations includes determining, by a processor of the computer, a first set of component types and locations according to a tree topology, according to the entry point and the plurality of end points, determining, by the processor, a second set of component types and locations according to a hybrid topology, according to the entry point and the plurality of end points, and determining, by the processor, one of the first set of component types and locations and the second set of component types and locations.

Claims

1. A computer implemented method of determining component types and locations in a network design, the method including:

a. determining, by a computer processor, the component types and locations according to a riser location as an entry point and antenna locations as a plurality of end points, in a floor plan;

b. determining, by a computer processor, the minimum required transmission power at a riser location to meet antenna equivalent isotropically radiated power (EIRP) requirements in a floor plan;

c. determining, by a computer processor, the best riser location from available riser locations according to cost limitation or power transmission efficiency in a floor plan;

d. determining, by a computer processor, the component types and locations according to a Base Transceiver Station (BTS) location as an entry point and riser locations in different floors as a plurality of end points, in a building plan;

e. determining, by a computer processor, the minimum required BTS transmission power to meet said minimum required transmission power at each riser location calculated;

f. updating, by a computer processor, the component locations based upon areas specified as component non-placement area;

g. determining, by a computer processor, the initial types of cables according to the lengths of each cable;

h. adjusting, by a computer processor, sizes of some cables to increase power transmission efficiency from a BTS to antennas if the total cost budget allows;

i. adjusting, by a computer processor, the sizes of some cables to reduce the cable cost with the satisfaction of the antenna EIRP requirement;

j. determining, by a computer processor, types and locations of new components, and updating, by a computer processor, existing component types, according to the locations of new antennas for the system to be enhanced or upgraded to accept a new technology.

2. A method according to claim 1, wherein the computer implemented method of determining component types and locations according to an entry point and a plurality of end points in a floor plan or in a building plan include,

a. determining the number, types and locations of splitters and cable types according to an entry point and a plurality of end points, in a tree topology;

b. determining the number, types and locations of couplers and cable types according to an entry point and a plurality of end points, in a bus topology;

c. determining the number, types and locations of splitters, couplers and cable types according to an entry point and a plurality of end points, in a hybrid topology;

d. determining the minimum required transmission power at an entry point according to the minimum required power at each end point in a tree, bus or hybrid topology.

3. A method according to claim 2, wherein the option to choose tree, bus or hybrid topology in a floor plan or a building plan is determined based upon the floor plan, building plan, product availability, or by any other suitable means.

4. A method according to claim 2, wherein the steps of determining the number, types and locations of splitters in a tree topology to a plurality of end points, which may be antenna locations, and an entry point, which may be a riser location, include,

a. determining the number, types and locations of a first set of splitters, wherein each end point is connected to one splitter of the first set of splitters;

b. determining iteratively the number, types and locations of any subsequent sets of splitters wherein each splitter in the set of splitters from the previous iteration is connected to one splitter of the new set of splitters; and

c. determining the type and locations of one final splitter wherein each remaining unconnected splitter from the first set of splitters or any subsequent set of splitters is connected to the final splitter and the entry point is connected to the final splitter.

5. A method according to claim 4, wherein the steps of determining the number, types and locations of splitters to be connected to a plurality of end points as at least part of a tree topology include,

a. defining types of available splitters by deciding the maximum number of outputs of splitters;

b. determining number and types of splitters from available types of splitters based at least partly on the number of a plurality of end points and the remainder relationship between the number of splitter outputs and the number of end points;

c. determining a group including one or two splitters, the number of outputs of each splitter which is smaller than the predefined number of maximum number of outputs;

d. determining the locations of splitters in said group based at least partly on the locations of the plurality of end points to be connected and the cable length;

e. determining the locations of the remaining splitters based at least partly on the lengths of cables and the locations of the plurality of end points to be connected.

6. A method according to claim 5, wherein the maximum number of outputs of splitters may be determined based on product availability, or by any other suitable means.

7. A method according to claim 4 or 5, wherein the minimum required transmission power at a riser location, is calculated based upon the required transmission power at antennas, the power loss of cables and the insertion loss of splitters.

8. A method according to claim 4, wherein the steps of determining types of splitters to be connected to splitters connected to a plurality of end points in a tree topology include, a. determining the number, types and locations of one or more further sets of splitters based on computer executable instructions for performing the method of claim 4 according to the number of pre-existing splitters as the end points;

b. determining the type and location of the last splitter to be connected to an entry point, then all end points are connected to the said last splitter via one or more further set of splitters.

9. A method according to claim 2, wherein the steps of determining the number, types and locations of couplers in a bus topology with a plurality of end points, which may be antenna locations, and an entry point, which may be a riser location, include,

a. defining the number and orientation of buses, which are cable backbones;

b. grouping the end points according to said number and orientation of buses based upon the distance from each end point to the bus;

c. determining the locations of buses according to the locations of the end points in said respective groups;

d. determining the locations of couplers along the cable backbones according to said end points to be connected by couplers;

e. determining the types of couplers to be connected to said end points from available types of couplers based on the required transmission power at end points.

10. A method according to claim 9, wherein the options of the number and orientation of buses in a floor plan or a building plan are determined based upon the floor plan, building plan, product availability, or by any other suitable means.

11. A method according to claim 9, wherein the steps of determining the types of said couplers includes,

a. determining the types of couplers by the order from the coupler closest to the entry point to the coupler closest to end points;

b. searching the type of each coupler from available coupler types to just meet the minimum power requirement at each end point according to the power level at the entry point;

c. updating the types of couplers to balance the power allocated at each end point by increasing the minimum power requirement at each end point.

12. A method according to claim 11, wherein the power level at the entry point is initialized in the start stage and then updated according to the available coupler types and minimum power requirements at end points.

13. A method according to claim 11, wherein the power at each end point is calculated based upon the coupling loss and direct loss of each coupler.

14. A method according to claim 2, wherein the steps of determining the number, types and locations of splitters and couplers in a hybrid topology with a plurality of end points, which may be antenna locations, and an entry point, which may be a riser location, include, a. defining the maximum cable length, which is a threshold, from the end points to the bus(es) to determine the end points to be connected by couplers, and the end points to be connected by splitters;

b. connecting the end point that have a cable length less than a threshold directly to the bus(es) via couplers;

c. determining the types and locations of couplers;

d. connecting the remaining end points to the bus(es) via splitters;

e. determining the types and locations of splitters;

f. connecting the splitters to the bus(es) via couplers.

15. A method according to claim 14, wherein the said maximum cable length is defined based upon the floor plan, building plan, product availability, or by any other suitable means.

16. A method according to claim 14, wherein the end points to be connected by splitters and couplers respectively can also be determined according to the cable length from the entry point to end points.

17. A method according to claim 2, wherein the minimum requirement transmission power at the entry point is calculated based on the required power at the end points.

18. A method according to claim 1, wherein the best riser location could be different in the tree, bus and hybrid networks as there may be no single best location for all three topologies.

19. A method according to claim 1, wherein some cables are selected to be adjusted in size by searching all cables in the network and verifying total cost budget or required transmission at the entry point and end points.

20. A method according to claim 1, wherein the steps of determining the number, types and locations of splitters and couplers to be added to an existing network design and connected to a plurality of new or existing end points, which may be antenna locations, when the system is enhanced or upgraded to accept a new technology, include

a. determining the types and locations of new couplers according to the end points to be connected by couplers if the end points have cable length less than the maximum cable length, which is a threshold, to the backbone;

b. determining the types and locations for the replacement of existing splitters with higher output numbers according to requirements of new and/or existing end points if the end points have cable length more than the maximum cable length, which is a threshold, to the backbone; and

c. determining the types and locations of new splitters to connect to the end points if the closest splitters already have the maximum number of outputs.

21. A method according to claim 20, wherein required transmission power at the entry point is re-calculated in cases of network design for system upgrade and enhancement.

22. A method according to any one of the preceding claims, wherein a set of solutions to connect an entry point to a plurality of end points is derived, the best solution from them can be chosen according to the specific requirements from design specification, building environments determined by floor plans and building plans, limitation of transmission power, cost budget, etc.

23. The method of claim 1 further including:

a. determining that an endpoint of the plurality of endpoints has a transmission power difference with the required transmission of the endpoint greater than a threshold;

b. increasing the required transmission power for each of the endpoints of the plurality of endpoints by a predetermined increment;

c. determining the component types and locations are based upon at least the increased transmission power requirements.