Method and apparatus for providing location services for a distributed network
First Claim
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1. A processing system for normalizing simulcast antenna nodes of a distributed antenna system (DAS) within a DAS simulcast sector, the processing system comprising:
- a processor communicatively connected to a distributed antenna system in which each given simulcast antenna node of a plurality of simulcast antenna nodes has a respective fiber delay corresponding to a propagation delay on a respective, distinct communication fiber connecting the given simulcast antenna node to a base station hotel (BSH);
a memory communicatively connected to the processor and adapted to store a computer program that when executed by the processor causes the system to carry out functions comprising;
selecting a reference simulcast antenna node within the DAS simulcast sector from among the plurality of simulcast antenna nodes;
calculating a respective radio frequency (RF) delay for each simulcast antenna node of the plurality of simulcast antenna nodes;
calculating a respective fiber delay difference of between the respective fiber delay of each simulcast antenna node and the respective fiber delay of the reference simulcast antenna node;
computing a respective differential delay for each simulcast antenna node by adding the respective RF delay and the respective fiber delay difference corresponding to each simulcast antenna node; and
calculate the calculating a respective total delay for each simulcast antenna node by adding the result of the fourth respective differential delay to the respective fiber delay of each simulcast antenna node.
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Abstract
A method and system for normalizing various simulcasting nodes within a distributed antenna system (DAS) simulcast sector uses the simulcast sector'"'"'s known fiber delays, the distance between the nodes, and its corresponding RF delays. The methodology includes adding calculated delays to the known fiber delays to normalize each node'"'"'s delay. Each normalized node delay value is equal to the value of the fiber delay of the furthest node plus the respective RF delay distance from that node.
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Citations
18 Claims
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1. A processing system for normalizing simulcast antenna nodes of a distributed antenna system (DAS) within a DAS simulcast sector, the processing system comprising:
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a processor communicatively connected to a distributed antenna system in which each given simulcast antenna node of a plurality of simulcast antenna nodes has a respective fiber delay corresponding to a propagation delay on a respective, distinct communication fiber connecting the given simulcast antenna node to a base station hotel (BSH); a memory communicatively connected to the processor and adapted to store a computer program that when executed by the processor causes the system to carry out functions comprising; selecting a reference simulcast antenna node within the DAS simulcast sector from among the plurality of simulcast antenna nodes; calculating a respective radio frequency (RF) delay for each simulcast antenna node of the plurality of simulcast antenna nodes; calculating a respective fiber delay difference of between the respective fiber delay of each simulcast antenna node and the respective fiber delay of the reference simulcast antenna node; computing a respective differential delay for each simulcast antenna node by adding the respective RF delay and the respective fiber delay difference corresponding to each simulcast antenna node; and calculate the calculating a respective total delay for each simulcast antenna node by adding the result of the fourth respective differential delay to the respective fiber delay of each simulcast antenna node. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of normalizing a plurality of simulcast antenna nodes of a distributed antenna system (DAS) within a DAS simulcast sector, the method comprising:
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determining a respective fiber delay for each given simulcast antenna node of the plurality of simulcast antenna nodes by measuring a propagation delay on a respective, distinct communication fiber connecting the given simulcast antenna node to a base station hotel (BSH); selecting a reference simulcast antenna node within the simulcast sector from among the plurality of simulcast antenna nodes; calculating a respective radio frequency (RF) delay for each simulcast antenna node of the plurality of simulcast antenna nodes; calculating a respective fiber delay difference between the respective fiber delay of each simulcast antenna node and the respective fiber delay of the reference simulcast antenna node; computing a respective differential delay for each simulcast antenna node by adding the respective RF delay and the respective fiber delay difference corresponding to each simulcast antenna node; and calculating a respective total delay for each simulcast antenna node by adding the respective differential delay to the respective fiber delay of each simulcast antenna node. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A non-transitory computer readable medium having instructions stored thereon that, when executed by a processor of a processing system, cause the processing system to carry out functions comprising:
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determining a respective fiber delay for each given simulcast antenna node of a plurality of simulcast nodes of a distributed antenna system (DAS) within a DAS simulcast sector, wherein the processing system is configured to communicate with the DAS, and wherein the respective fiber delay corresponds to a propagation delay on a respective, distinct communication fiber connecting the given simulcast antenna node to a base station hotel (BSH); selecting a reference simulcast antenna node within the DAS simulcast sector from among the plurality of simulcast antenna nodes; calculating a respective radio frequency (RF) delay for each simulcast antenna node of the plurality of simulcast antenna nodes; calculating a respective fiber delay difference between the respective fiber delay of each simulcast antenna node and the respective fiber delay of the reference simulcast antenna node; computing a respective differential delay for each simulcast antenna node by adding the respective RF delay and the respective fiber delay difference corresponding to each simulcast antenna node; and calculating a respective total delay for each of the simulcast antenna node by adding the respective differential delay to the respective fiber delay of each simulcast antenna node. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification