Patent ID: 8130667

Claim:
A method for selecting a transport block size (TBS) of a first uplink message (RACH Msg3) transmitted on a Physical Uplink Shared Channel (PUSCH) during a random access procedure in a User Equipment (UE) accessing a radio access network, comprising: receiving a pathloss threshold parameter; estimating a downlink pathloss value indicative of radio link conditions between the UE and a base station (eNB) serving the UE; selecting from a set of TBS values a smaller value of TBS if the determined pathloss value is greater than an operating power level of the UE minus the pathloss threshold parameter; sending a random access request containing an indication of the selected TBS; wherein the operating power level of the UE is Pmax−P 0 — PRE −Δ PREAMBLE-Msg3 ; wherein the pathloss is the downlink pathloss value estimate calculated in the UE; wherein Pmax is the maximum allowed transmission power; wherein P 0 — PRE is the initial target received preamble power at the serving eNB antenna port; wherein Δ PREAMBLE-Msg3 is the offset between RACH preamble and the RACH Msg3; and wherein the pathloss threshold parameter is configured by the network.