Switching control method of relay system

Abstract

The invention provides a switching control method of a relay system. The switching control method of the relay system comprises the following steps: A, notifying quality of service (QoS) parameter which is mapped to an user experience (UE) E-radio access bearer (RAB) of an user device on the E-RMB of a retrieval number (RN)-universal terrestrial radio access network (UTRAN) of the relay node to a target host base station T-DeNB by a source host base station S-DeNB; B, ensuring whether the T-DeNB accept the even parity select ( EPS) bearing of a RN evolvement grouping system according to the Qos parameter. Three specific conditions are as follows: accepting the EPS bearing of the RN completely; accepting the EPS bearing of the RN partially; and rejecting the EPS bearing of the RN.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a switching control method in a relay system. Background technique [0002] In the LTE / LTE-A mobile communication system, the X2 interface handover control process for the UE in the prior art is as follows: figure 1 shown, including the following steps: [0003] Step 101: a source base station (eNB) sends a handover request (Handover Request) message to a target eNB, and the message includes a target cell identifier and UE context information. Among them, the UE context information includes the UE Evolved Universal Terrestrial Radio Access Network (E-UTRAN) radio access bearer (E-RAB, E-UTRAN Radio Access Bearer) list requested to be established, and the radio resource control (RRC, Radio Resource Control) context. [0004] In the UE E-RAB list requesting establishment, for each UE E-RAB requesting establishment, the UE E-RAB identifier and UE E-RAB-leve...

AI Technical Summary

Problems solved by technology

[0021] Assume that the ARP priority of the RN E-RAB of the first service accepted is higher (set to 5), and the UE E-RAB of the second service being served by the target cell is lowered because of the lower ARP priority (set to 10) Released by the target DeNB; at the same time, the ARP priority of the UE EPS bearer mapped to the third service carried by the RN EPS is lower (set to 12), and will also be served by the target cell, which is equivalent to ARP priority The resources of the UE EPS bearer with ARP priority 10 are preempted by the UE EPS bearer with ARP priority 12, which causes the second service carried by the UE EPS bearer with ARP priority 10 to be unnecessarily suspended, thus damaging the target cell Quality of service of the serving UE

[0022] Assume that a certain RN E-RAB refuses to accept the RN E-RAB because the ARP priority is low (set to 10), and the ARP priority of the UE E-RAB being served by the target cell is greater than 10 (for example, There are values ​​between 1 and 9) so that it will not be released, then, if the ARP priority of a certain UE EPS bearer mapped to the RN EPS bearer is higher (set to 6), it is equivalent to the UE EPS bearer resources are preempted by the UE EPS bearer with a lower ARP priority (for example, the value is between 7 and 9), which makes the UE EPS bearer unable to obtain the service of the target cell, thus damaging the UE to which the UE EPS bearer belongs quality of service

[0023] To sum up, the target DeNB takes the RN EPS bearer as a whole to perform handover control and ignores the ARP requirements of the UE EPS bearer mapped to the RN EPS bearer, which may damage the service quality of a certain or some UEs

[0024] On the other hand, the resources at the target DeNB may be able to serve most UE EPS bearers mapped to a certain RN EPS bearer. In the prior art, the target DeNB rejects the RN EPS bearer, which means that all UEs mapped to the RN EPS bearer The EPS bearer cannot get the service of the target DeNB, thus wasting the resources at the target DeNB

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