Switching method in long-termed evolution enhancing system and system

Abstract

The invention discloses a switching method in a long-termed evolution enhancing system and the system. The method comprises the following steps that: UE receives configuration information that a source eNB sends to SCC and current PCC; when UE supports single-carrier access and after the access of the current PCC fails, whether all SCCs can serve as backup PCCs is judged according to the configuration information, all the SCCs are sequentially accessed according to the priority of the backup PCCs until the access succeeds, the accessed SCC serves as the current PCC, a switching complete message is sent to a target eNB, and the current PCC is marked; and when UE supports and simultaneously accesses a plurality of CCs, according to the configuration information, a plurality of CCs are accessed simultaneously, if the current PCC fails to be accessed but the backup PCC is successfully accessed, the SCC which is successfully accessed and has the highest priority is found out according to the configuration information and serves as the current PCC, and the switching completion message is sent to the target eNB. In the method, UE can be quickly connected to a community with the best access quality, the access time is short and the process is simple.

Description

technical field [0001] The present invention relates to mobile communication technology, in particular to a handover method and system in a long-term evolution enhanced system. Background technique [0002] After 3GPP's Long Term Evolution (LTE, Long Term Evolution) technology, the 3GPP organization continued to enhance the LTE solution. This enhanced technology is called LTE-A (LTE-Advanced) technology, that is, LTE-A is the LTE technology subsequent evolution. [0003] In the LTE system, the user equipment (UE) only supports accessing the evolved base station (eNB) from one component carrier (CC, Component carrier) for data transmission. In this way, when the UE performs cell handover and the handover fails, it will use the Rel- 8 Handover failure processing method for processing. figure 1 A flow chart of a method for handling Rel-8 handover failure in an LTE system provided by the prior art. Such as figure 1 As shown, the flow of the processing method for Rel-8 handov...

AI Technical Summary

Problems solved by technology

[0011] In the Rel-8 handover failure processing method, the UE reselects the cell to be accessed at random, which causes the cell access quality of the UE to be unguaranteed, and the access time is relatively long, and the access process is also relatively complicated

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