Method of exchanging SMS data in a wireless communications system

摘要

The system comprises wireless user equipment (UE) and a core network unit interfaced with the UE through a wireless access network. A first short message relay (SMR) entity and a first short message control entity (SMC) are provided in the core network unit or the UE, the other one having a second SMR entity and a second SMC entity. The method of exchanging SMS data comprises, in the first SMC entity:—transmitting to the second SMC entity first control protocol data (CP_DATA) conveying relay protocol data (RP_DATA) provided by the first SMR entity,—receiving from the second SMC entity second CP_DATA conveying relay protocol acknowledgement information (RP_ACK) from the second SMR entity; and—retransmitting the first CP_DATA unless an acknowledgement is received from the second SMC entity before a timer expires. The second CP_DATA is interpreted as an acknowledgement for deciding whether the first CP_DATA is to be retransmitted.

主权项

1. A method of exchanging short message service (SMS) data in a wireless communications system comprising a user equipment (UE) and a core network unit interfaced with the UE through a wireless access network, wherein a first short message relay (SMR) entity and a first short message control (SMC) entity are provided in the UE, and a second SMR entity and a second SMC entity are provided in the core network unit, the method comprising:
for a mobile originated (MO) message, transmitting, at the first SMC entity, first control protocol (CP) data to the second SMC entity, the first CP data conveying relay protocol (RP) data provided by the first SMR entity for the second SMR entity; starting a timer of the UE when transmitting the first CP data; in response to the first CP data, receiving, at the first SMC entity from the second SMC entity, second CP data conveying RP acknowledgement information from the second SMR entity, wherein no CP acknowledgement is received from the second SMC entity before the RP acknowledgement information is received at the second SMC entity; stopping the timer of the UE if the second CP data conveying the RP acknowledgement information is received at the first SMC entity; and retransmitting the first CP data if the second CP data conveying the RP acknowledgement information is not received at the first SMC entity before the timer of the UE expires.