Prioritization of location queries in a location-based services system
Location-based services are provided in a communication system comprising at least a portion of at least one wireless network. In one aspect of the invention, users associated with respective mobile user devices are separated into at least a first group of users of a first benefit class of a location-based service and a second group of users of a second benefit class of the location-based service. Location information is obtained for the mobile user devices, with the location information being obtained more frequently for the mobile user devices of users in the first group than for the mobile user devices of users in the second group. At least one message is controllably delivered to a given one of the mobile user devices based on the location information.
1 . A method of providing location-based services, the method comprising the steps of:
separating users associated with respective mobile user devices associated with a wireless network into at least a first group of users of a first benefit class of a location-based service and a second group of users of a second benefit class of the location-based service;
obtaining location information for said mobile user devices, wherein the location information is obtained more frequently for the mobile user devices of users in the first group than for the mobile user devices of users in the second group; and
controlling delivery of at least one message to a given one of the mobile user devices based on the location information.
2 . The method of claim 1 wherein the first and second benefit classes are defined by respective first and second levels of perceived benefit to a provider of the location-based service, wherein the second level is lower than the first level.
3 . The method of claim 1 wherein the first and second benefit classes comprise respective first and second levels of expected revenue generation for a provider of the location-based service.
4 . The method of claim 1 wherein the first and second benefit classes comprise respective first and second levels of expected responsiveness to a given message.
5 . The method of claim 1 wherein the message is selected for delivery to the given mobile user device based at least in part on a match between the message and a combination of location, presence and profile information of a user associated with that device.
6 . The method of claim 1 wherein the separating, obtaining and controlling steps are implemented at least in part in a location server of a location-based services system within the communication system.
7 . The method of claim 1 wherein the obtaining step further comprises obtaining the location information utilizing at least one of a trajectory method, an expanding-disk method and a nucleation-area method.
8 . The method of claim 7 wherein the nucleation-area method operates utilizing a three-dimensional bin space having dimensions of longitude, latitude and time, the longitude and latitude dimensions defining a plurality of geographic bins and the time dimension defining a temporal bin, with location information for a given mobile user device comprising multiple location measurements assigned to particular geographic and temporal bins of the three-dimensional bin space.
9 . The method of claim 8 wherein counts of measurements falling within particular ones of the bins of the three-dimensional bin space are used to determine a probability that the mobile user device will be within a particular geographic area at a particular time.
10 . The method of claim 8 wherein the nucleation-area method performs an iterated analysis of counts of measurements falling within particular ones of the bins of the three-dimensional bin space while varying sizes of one or more of the geographic and temporal bins on each of one or more iterations of the iterated analysis.
11 . The method of claim 10 wherein bin sizes of both the geographic and temporal bins are varied for a single iteration of the iterated analysis.
12 . The method of claim 8 wherein the nucleation-area method determines if particular ones of the mobile user devices have a non-available status for one or more of the bins and if so enters predetermined values into those bins.
13 . An article of manufacture comprising a computer-readable medium storing one or more software programs which when executed by at least one processing device implement the method of claim 1 .
14 . An apparatus for use in providing location-based services, the apparatus comprising:
a location-based services system comprising at least one processing device having a processor coupled to a memory;
wherein the location-based services system is adapted to separate users associated with respective mobile user devices associated with a wireless network into at least a first group of users of a first benefit class of a location-based service and a second group of users of a second benefit class of the location-based service, and to obtain location information for said mobile user devices, wherein the location information is obtained more frequently for the mobile user devices of users in the first group than for the mobile user devices of users in the second group; and
wherein the location-based services system is further adapted to control delivery of at least one message to a given one of the mobile user devices based on the location information.
15 . The apparatus of claim 14 wherein the location-based services system is external to the wireless network.
16 . The apparatus of claim 14 wherein the location-based services system is implemented using a layered architecture comprising at least an application support layer, an application enabling layer, a location-based service enabling layer and a network connectivity layer.
17 . The apparatus of claim 16 wherein the location-based service enabling layer comprises a location server adapted to limit location-related communications between the mobile user devices and base stations of the wireless network by at least one of eliminating duplicate location queries and prioritizing location queries.
18 . The apparatus of claim 16 wherein the network connectivity layer comprises a location and presence query module adapted to obtain mobile user device location and presence information.
19 . A mobile user device associated with a wireless network, the mobile user device being configured to receive at least one message that is controllably delivered to the mobile user device based on location information obtained for the mobile user device;
wherein users associated with respective ones of the mobile user device and other mobile user devices associated with the wireless network are separated into at least a first group of users of a first benefit class of a location-based service and a second group of users of a second benefit class of the location-based service; and
wherein location information is obtained more frequently for the mobile user devices of users in the first group than for the mobile user devices of users in the second group.
20 . The mobile user device of claim 19 wherein the at least one message is delivered under the control of a location-based services system.