Patent ID: 8611262

Claim:
A method for determining a random access transmission power of a first communication device in a communications network, the method comprising: receiving, at the first communication device, data from a second communication device indicating a random access reception power; determining a random access transmission power, P RACH , to use based on the indicated random access reception power and a parameter of random access configuration, wherein the parameter comprises at least one of a preamble format and a basic cyclic shift value of a preamble, and wherein: P RACH =min{ P 0,RACH −( P RS,RX −P RS,TX )+( N− 1)Δ RACH +Δ Preamble ,P max }, wherein: P RACH comprises the random access transmission power; P 0,RACH comprises the indicated random access reception power; P RS,RX comprises the received power of the one or more reference signals; P RS,TX comprises the transmitted power of the one or more reference signals; Δ RACH comprises a power ramping value; N comprises a transmission attempt number; Δ Preamble comprises an offset value associated with the parameter of random access configuration; and P max comprises a maximum random access transmission power; and setting a random access transmission power of the first communication device in accordance with the determined random access transmission power, P RACH .