8.3 Procedure for measurement report sending in Packet Transfer mode
3GPP44.060General Packet Radio Service (GPRS)Mobile Station (MS) - Base Station System (BSS) interfaceRadio Link Control / Medium Access Control (RLC/MAC) protocolRelease 17TS
The procedure for NC measurement report sending shall be initiated by the mobile station at expiry of the NC measurement report interval timer T3158 (see sub-clause 5.6.1). An exception is the case of a mobile station that has enabled PEO or EC operation in which case only NC0 shall be used (see 3GPP TS 45.008 [15]) and therefore NC measurement report sending shall not be initiated by the mobile station. At expiry of the timer T3158 the mobile station shall restart the timer T3158, perform the measurements and send either the PACKET MEASUREMENT REPORT message containing the ‘NC measurement report struct’ or the PACKET ENHANCED MEASUREMENT REPORT message on PACCH.
Following a downlink TBF establishment, the PACKET MEASUREMENT REPORT or PACKET ENHANCED MEASUREMENT REPORT message shall not be sent on the uplink PACCH associated with this TBF until two Packet Ack/Nack ((EGPRS) PACKET DOWNLINK ACK/NACK or EGPRS PACKET DOWNLINK ACK/NACK TYPE 2 or EGPRS PACKET DOWNLINK ACK/NACK TYPE 3 or EGPRS PACKET DOWNLINK ACK/NACK DLMC) messages have been sent to the network.