Cell reselection mechanism for a base station with closed subscriber group
Embodiments of systems and methods for cell selection in a wireless network are generally described herein. Other embodiments may be described and claimed.
1. A method to initiate network entry by an advanced mobile station (AMS), comprising:
detecting a femto advanced base station (ABS);
locating a closed subscriber group identifier (CSGID) in the AMS;
generating an advanced air interface range request (AAI_RNG-REQ) message;
initiating initial ranging with the femto ABS by transmitting the CSGID and the AAI_RNG-REQ message to the femto ABS; and
receiving a station identifier (STID) from the femto ABS.
2. The method of claim 1 , further comprising synchronizing the AMS with the femto ABS.
3. The method of claim 1 , wherein the femto ABS is a closed subscriber group (CSG) femto ABS that checks the received CSGID to determine if there is a match with a second CSGID in the femto ABS.
4. The method of claim 3 , wherein the AMS is a member of the femto ABS.
5. The method of claim 1 , wherein the femto ABS is an open subscriber group (OSG) femto ABS that ignores the CSGID from the AMS.
6. A method to initiate network entry by an advanced mobile station (AMS), comprising:
receiving a closed subscriber group identifier (CSGID);
detecting a femto advanced base station (ABS);
transmitting a first unicast message from the AMS to the femto ABS, wherein the unicast message includes the CSGID from the AMS; and
receiving a second unicast message from the femto ABS, wherein the second unicast message indicates rejection of access to the femto ABS by the AMS and the second unicast message includes redirection info for the AMS.
7. The method of claim 6 , wherein the first unicast message is an advanced air interface range request (AAI_RNG-REQ) message and the second unicast message is an advanced air interface range response (AAI_RNG-RSP) message.
8. The method of claim 6 , wherein the femto ABS compares the CSGID from the AMS to a number of femto ABS CSGIDs.
9. The method of claim 8 , wherein the redirection info comprises an ABS identifier, a preamble index, and a center frequency of another cell.
10. The method of claim 8 , wherein the CSGID from the AMS does not match any of the number of femto ABS CSGIDs.
11. The method of claim 9 , further including receiving filtered redirection info from the femto ABS based on the CSGID provided by the AMS.
12. The method of claim 11 , wherein the filtered redirection info provides information on an OSG femto ABS and a second CSG femto ABS having a matching CSGID to the AMS.
13. An advanced mobile station (AMS) for initiating network entry, comprising:
an antenna;
a radio frequency (RF) interface configured to receive a broadcast message from a femto advanced base station (ABS); and
processing circuitry configured to:
locate a closed subscriber group identifier (CSGID) in the AMS;
generate a unicast message;
initiate initial ranging with the femto ABS by transmitting the CSGID and the unicast message to the femto ABS, wherein the femto ABS is a closed subscriber group (CSG) femto ABS that is configured to check the received CSGID to determine if there is a match with a second CSGID in the femto ABS.
14. The AMS of claim 13 , wherein the unicast message is an advanced air interface range request (AAI_RNG-REQ) message.
15. The AMS of claim 13 , wherein the AMS is a member of the femto ABS.
16. The AMS of claim 13 , wherein the femto ABS is an open subscriber group (OSG) femto ABS that ignores the CSGID from the AMS.
17. An advanced mobile station (AMS) for selecting a cell in a wireless network, comprising:
an antenna;
processing circuitry configured to locate aclosed subscriber group identifier (CSGID) in the AMS; and
a radio frequency (RF) interface configured to:
receive a broadcast message from a femto advanced base station (ABS);
transmit an advanced air interface range request (AAI_RNG-REQ) message from the AMS to the femto ABS, wherein the AAI_RNG-REQ message includes the CSGID; and
receive an advanced air interface range response (AAI_RNG-RSP) message from the femto ABS, wherein the AAI_RNG-RSP message indicates rejection of access to the femto ABS by the AMS and the AAI_RNG-RSP message includes redirection info for the AMS.
18. The AMS of claim 17 , wherein the RF interface is further configured to transmit a plurality of CSGIDs to the femto ABS for the femto ABS to compare against CSGIDs in the femto ABS.