| 摘要 |
<p>Performing a circuit-switched fallback, CSFB, call with improved reliability. A request to establish a CSFB call may be received by a UE (106) that is currently in a pool overlap area. The network resource controller (172), or the base station (102), transmits information to the UE which indicates the pools in which neighboring cells are operating. The UE uses this information to select a circuit-switched cell on which to operate for the CSFB operation, wherein the selected CS cell is in the same pool area as the current pool area. This prevents the UE from inadvertently camping on a CS cell in a different pool area, which could cause call failure on some networks. The information provided by the base station may comprise a pool area id, or may comprise mapping relation information that is useable by the UE to determine the current pool area.</p> |
