Methods for tracking users in a communication network
First Claim
Patent Images
1. A method of tracking at least one user in a wireless communication network supporting a broadcast-multicast service, comprising:
- classifying groups of users into tracking areas at the network;
transmitting an overhead message including an indicator value to the at least one user of a group;
tracking movement of the at least one user of the group based on a tracking area registration update message received from the user that is enabled or disabled based on the indicator value; and
determining a change in tracking area for the at least one user based on at least an adding or dropping criterion, and wherein;
the indicator value enables the tracking area registration update message if the at least one user is in a sector on a boundary between at least two tracking areas and the indicator value disables the tracking area registration update message if the at least one user is not in said sector on the boundary.
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Abstract
In a method of tracking a user in a communication network supporting a broadcast-multicast service, the network classifies groups of users into tracking areas. Movement of a user may be tracked as the user crosses a boundary between two tracking areas in the network. The method may enable a balance to be achieved between use of uplink overhead and the level or granularity of tracking desired, so as to conserve radio resources.
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Citations
19 Claims
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1. A method of tracking at least one user in a wireless communication network supporting a broadcast-multicast service, comprising:
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classifying groups of users into tracking areas at the network; transmitting an overhead message including an indicator value to the at least one user of a group; tracking movement of the at least one user of the group based on a tracking area registration update message received from the user that is enabled or disabled based on the indicator value; and determining a change in tracking area for the at least one user based on at least an adding or dropping criterion, and wherein; the indicator value enables the tracking area registration update message if the at least one user is in a sector on a boundary between at least two tracking areas and the indicator value disables the tracking area registration update message if the at least one user is not in said sector on the boundary. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method by which at least one user provides a tracking area registration update to a wireless network supporting a broadcast-multicast service, the network serving a plurality of tracking areas, each tracking area containing one or more non-overlapping sectors, comprising:
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receiving an overhead message including an indicator value from a serving sector; evaluating pilot strengths of M strongest said sectors against a given criteria to determine a change in tracking area after expiration of a given time interval; enabling a tracking area registration update message based on the indicator value received in the overhead message; sending said tracking area registration update message to the network to update the location of the user based on a result of the evaluating step; and determining a change in the tracking area for the at least one user based on at least an adding or dropping criterion, and disabling the tracking area registration update message if the at least one user is not in said sector on a boundary between at least two of the tracking areas on the boundary or an uplink is overloaded. - View Dependent Claims (9)
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10. A method of tracking at least one user in a wireless communication network supporting a broadcast-multicast service, the network serving a plurality of tracking areas, each tracking area containing one or more non-overlapping sectors, each non-overlapping sector having one or more groups of users, comprising:
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transmitting an indicator value in an overhead message for enabling or disabling tracking area updates from said users of the sector; determining user location of said at least one user within one of the tracking areas based on a response from the at least one user to the indicator value; and determining a change in the tracking area for the at least one user based on at least an adding or dropping criterion, and wherein the transmitting step transmits an indicator value enabling registration update messages if the users are in said sector on a boundary between at least two tracking areas and transmits an indicator value disabling the tracking area registration update message if the users are not in a said sector on the boundary or an uplink is overloaded. - View Dependent Claims (11)
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12. In a wireless network supporting a broadcast-multicast service and serving a plurality of sectors, groups of sectors further classified by the network into a plurality of tracking areas, each sector of the groups of sectors having one or more groups of users, a method of obtaining registration to track location of at least one user in a tracking area, comprising:
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transmitting an overhead message from said each sector to its corresponding said groups of users, the overhead message including an indicator value enabling or disabling a registration update message from the users; receiving a registration from at least one user that is based on the user detection of the indicator value; and determining a chance in the tracking area for the at least one user based on at least an adding or dropping criterion, and wherein the transmitting step transmits an indicator value enabling the registration update messages if the users are in said sector on a boundary between at least two tracking areas and transmits an indicator value disabling the registration update message if the users are not in said sector on the boundary or an uplink is overloaded.
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13. A method of tracking at least one user in a wireless communication network supporting a broadcast-multicast service, comprising:
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classifying groups of users into tracking areas at the network; transmitting an overhead message including an indicator value to at least one user of a group; tracking movement of the at least one user of the group based on a tracking area registration update message received from the at least one user that is enabled or disabled based on the indicator value; and determining a change in the tracking area for the at least one user based on at least an adding or dropping criterion, and wherein the transmitting step transmits an indicator value enabling registration update messages if the users are in a sector on a boundary between at least two tracking areas and transmits an indicator value disabling the tracking area registration update message if the users are not in said sector on the boundary or an uplink is overloaded. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification