Mobility procedures and differentiated charging in home node-Bs
A method and apparatus for implementing Idle and Connected Mode mobility to and from a Home evolved Node-B (HNB) in a wireless environment. Methods to implement differentiated charging when accessing HNBs, as well as the criteria used to make a cell reselection decision when an HNB is detected, criteria for making a handoff decision and methods to indicate charging and other policies/preferences and configurations to a wireless transmit/receive unit (WTRU).
1. A method for reselection for use in a wireless transmit/receive unit (WTRU), the method comprising:
maintaining a list of one or more identifiers (IDs) including one or more IDs indicating previously visited HNBs;
searching for one or more candidate cells including candidate cells associated with any of the one or more IDs indicating the previously visited HNBs on non-serving frequencies;
performing measurements on the one or more candidate cells including the candidate cells associated with any of the one or more IDs indicating the previously visited HNBs to generate selection criteria identifying one or more suitable candidate cells for reselection;
determining whether at least one additional selection criteria associated with a characteristic of the identified one or more suitable candidate cells indicates the identified one or more suitable candidate cells has priority over a serving cell associated with a serving frequency; and
determining whether to reselect to the identified one or more suitable candidate cells based on the serving frequency, the measurements, and the at least one additional selection criteria.
2. The method of claim 1 , wherein the at least one additional selection criteria further indicates at least one of offered services, user preferences and charging policies.
3. The method of claim 1 , wherein the list of one or more IDs includes an indication of priority.
4. The method of claim 1 , further comprising reselecting to the identified one or more suitable candidate cells based on the determination to reselect.
5. The method of claim 4 , wherein the reselecting is performed on a condition that the indication of priority of the identified one or more suitable candidate cells is a higher priority than an indication of priority of the serving cell.
6. The method of claim 5 , wherein the reselecting further includes remaining on the serving cell on a condition that the indication of priority of the identified one or more suitable candidate cells is a lower priority than the indication of priority of the serving cell.
7. The method of claim 1 , wherein the at least one additional selection criteria includes a random selection on a condition that all other selection criteria are equal.
8. The method of claim 1 , wherein the serving cell is a macro cell.
9. The method of claim 1 , wherein the serving cell is a HNB.
10. A wireless transmit/receive unit (WTRU) comprising:
a processor configured to maintain a list of allowed Home Node B (HNB) identifiers (IDs) including HNB IDs of previously visited HNBs; and
the processor, a transmitter, and a receiver configured to:
search for one or more candidate cells including candidate cells associated with any of the allowed HNB IDs including the HNB IDs of the previously visited HNBs on non-serving frequencies;
perform measurements on the one or more candidate cells including the candidate cells associated with any of the allowed HNB IDs including the HNB IDs of the previously visited HNBs to generate selection criteria identifying one or more suitable candidate cells for reselection;
determine whether at least one additional selection criteria associated with a characteristic of the identified one or more suitable candidate cells indicates the identified one or more suitable candidate cells has priority over a serving cell associated with a serving frequency; and
determine whether to reselect from the serving cell to the identified one or more suitable candidate cells based on the serving frequency, the measurements, and the at least one additional selection criteria.
11. The WTRU of claim 10 , wherein the serving cell is a macro cell.
12. The WTRU of claim 10 , wherein the serving cell is a HNB.
13. The WTRU of claim 10 , wherein the list of allowed HNB IDs includes an indication of priority.
14. The WTRU of claim 10 , further comprising the processor, the transmitter, and the receiver configured to reselect to the identified one or more suitable candidate cells based on the determination to reselect.
15. The WTRU of claim 14 , wherein the processor, the transmitter, and the receiver are further configured to reselect on a condition that the indication of priority of the identified one or more suitable candidate cells is a higher priority than an indication of priority of the serving cell.
16. The WTRU of claim 10 , wherein the at least one additional selection criteria includes an indication of services offered.
17. The WTRU of claim 10 , wherein the at least one additional selection criteria includes an indication of a charging policy.
18. The WTRU of claim 10 , wherein the at least one additional selection criteria includes a random selection on a condition that all other selection criteria are equal.