SYSTEMS AND METHODS PROVIDING IMPROVED SUCCESS RATE FOR RRC CONNECTION REESTABLISHMENTS

摘要

Systems and methods that provide improved success rates for connection reestablishments in a cellular communications system are disclosed. Embodiments of a radio access node in a cellular communications system enabling connection reestablishment for a wireless device to a target cell controlled by the radio access node are disclosed. In some embodiments, the radio access node is operative to: (a) perform a wireless device context fetch for a context for the wireless device from two or more candidate source cells of the wireless device in response to a connection reestablishment request from the wireless device and (b) receive a wireless device context from at least one of the two or more candidate source cells of the wireless device in response to performing the wireless device context fetch. By performing multiple context fetches, the radio access node mitigates the problem of physical cell identifier ambiguity.

主权项

1. A radio access node in a cellular communications system enabling connection reestablishment for a wireless device to a target cell controlled by the radio access node, comprising:
a network interface configured to enable communication between the radio access node and one or more other radio access nodes; at least one processor; and memory containing instructions executable by the at least one processor whereby the radio access node is operative to:
perform, via the network interface, a wireless device context fetch for a context for the wireless device from two or more candidate source cells of the wireless device in response to a connection reestablishment request from the wireless device; andreceive a wireless device context from at least one of the two or more candidate source cells of the wireless device in response to performing the wireless device context fetch.