Location beaconing methods and systems

Data processing: vehicles – navigation – and relative location – Relative location

Reexamination Certificate

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Details

C701S207000, C701S214000, C701S216000, C342S357490

Reexamination Certificate

active

06327535

ABSTRACT:

TECHNICAL FIELD
This invention relates to generally to the area of context-aware computing or ubiquitous computing.
BACKGROUND
The World Wide Web (WWW) was created to make content available from any source in any location around the world. Users of the Web are able to generally access a seemingly infinite number of resources via the Web. The Web has been highly successful in this regard. Yet, with the evolution of the Web, certain needs remain largely unmet. Specifically, people continue to have a need to access information that has a contextual aspect to it. That is, often times, individuals will find themselves in a computing environment that carries with it a certain context. Yet, the context of the environment cannot be easily incorporated into the present computing environment. As an example, consider the context of location. People generally have a need to access information, data, resources and the like, that have geographic dimensions to them. For example, individuals may desire to take advantage of services or products that are close in proximity to where they currently are located. In this regard, it is desirable to understand the individual's contextual location so that services, goods and the like can be made available to the individual. As “eCommerce” continues to grow in importance, the necessity of bringing people, places, services and goods together in an efficient manner will become critically important.
To date, many attempts have been made to bring people, places, services and goods together. These various attempts have generally approached the problem from different directions in an often times incompatible manner. As an example, consider the context of location. Some services have attempted to bring people and services together by defining large databases that maintain information about the services. For example, a list of restaurants may be maintained in a web accessible database where each restaurant is associated with a zip code in which the restaurant is located. When a user desires to locate a particular restaurant, they might simply enter the zip code where they are located to see a list of corresponding restaurants in that zip code. From the list of restaurants, they might be able to select one or two restaurants of interest. This approach is undesirable for a number of reasons. First, the operation of the system is dependent upon a central server that is responsible for receiving user queries and executing the queries to return the information to the user. In the event the server fails, so too does the service. In addition, this particular service might be suited to finding restaurants, but possibly not other businesses. In addition, the granularity with which the results are returned to the user may foist some of the search burden on the user (i.e. the user gets a list of restaurants in a nearby zip code, but has to further explore the list to select which ones are of interest). Further, the list of restaurants may include some restaurants that are blocked by some type of a physical barrier (i.e. a river, mountain, etc.) that makes the distance, as the crow flies, unroutable.
Providers of services and products want to be connected to nearby end-users. End-users want to consume these services and goods at the closest and most convenient location. Acquiring the services of a dentist or a plumber that lives somewhere “out on the net” is not appropriate if you need them to fill a cavity or unclog a sink. Looking for the nearest hotdog while in a stadium requires you to stay in the stadium.
There is an unsolved need to be able to create context-aware computing in which computing devices can participate in their particular context. In specific circumstances, there are needs to provide relational position awareness among physical locations in both public and private views of the world. To date, however, there is no one standardized view of the world that would unlock the potential of context-aware computing. Context-aware computing is much more than just position awareness—although this is a very big field in and of itself.
This invention arose out of concerns associated with developing a standardized, context-aware infrastructure and related systems to unlock the potential of context-aware computing.
SUMMARY
Context aware computing systems and methods are described. In the described embodiment, one or more hierarchical tree structures are defined that uniquely identify geographical divisions of the Earth and/or physical or logical entities. Each tree has multiple nodes and at least one node from each tree is linked. Goods and services can be associated with individual nodes on the tree, the nodes providing a universal reference when attempting to locate or consume the goods or services.
In one embodiment, a computing device (such as a stationary or mobile computing device) has access to one or more of the tree structures and can utilize the tree structures to ascertain its current context. The device determines its context by traversing one or more of the tree structures to ascertain information that is associated with the individual nodes of the tree structure. In a particular embodiment, the context is the device location and the device is capable of autonomously determining its location within a Master World and one or more Secondary worlds. Once the computing device has determined its location, it can then take part in location-dependent scenarios.
In one embodiment a Master World is defined and is a hierarchical tree structure that represents a universally acceptable description of the world. One or more Secondary Worlds can be defined and constitute company- or organization- specific views of the world that link with the Master World. A Secondary World can describe the location tree of an organization.
In one embodiment, a device architecture includes a common interface, a location service module, a plurality of location providers, and an application program interface (API) or events layer. Various location providers can call the common interface with location information that is processed by the location service module to ascertain the device's current location. The location providers provide hints about the current location and the location service module turns the hints into a nodal location on one or more of the hierarchical tree structures. The location service then traverses one or more of the tree structures to ascertain a complete device location. Various applications can call the API layer to ascertain location information from the location service module. By knowing where a device is located within a hierarchical structure, the applications can present location-dependent goods or services to the user. Thus, a user is able to actively participate in their current computing environment.
In other embodiments, the location service module is able to determine, to a degree of certainty, the location of the device. It does so through the use of confidence and accuracy parameters that are assigned to the information that is provided by the location providers. Additionally, a trust parameter can be assigned by the location service module to the location providers and provides a measure of the trust that is associated with a particular location provider. The location service module can then consider all of the parameters in deciding which location information to use and how to use it in determining a device location.
In another embodiment, privacy issues are addressed by a privacy manager that functions to modulate the information that is provided to the various applications as a function of the applications' identities and security policies on the device.
In yet another embodiment, a unique beacon provider is described. A beacon can be located in various places and transmits context information that (in the case of location information) can be directly used to ascertain the device's location relative to a tree structure node. This provides direct information about the device's location within the defined hierarchical inf

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