Hello, everyone.

Could you please assist me in getting some info on the following questions regarding location based services?

1. If a service provider needs to have information on the current location of the mobile phone (the fact is known to the user of the service and they should be willing to disclose their location) what will the mobile operator require from the service provider to give it access to the location data? ( a special agreement, etc.) What is a "standart procedure" from the point of view of the operator?

2. In what form is the location info given by the operator to the service provider? At least what's the most common form or method?

3. Is there a standart protocol for querying the position of mobile stations by the service provider from the operator's network? Heard of the MLP protocol but I don't actually know if it's accepted by any mobile operators. What's the real-life situation?

I will be extremely grateful for any information, real-life examples and case studies.

Thank you very much in advance.