Random access procedures
摘要
說明書
The determining/calculating the downlink pathloss estimate for the transmission power of the random access preamble based on the reference signal may comprise measuring/assessing the reference signal to determine/calculate the second power term in the downlink pathloss estimate. The measuring/assessing the reference signal may comprise measuring a radio link quality (e.g., L1-RSRP, L3-RSRP, SINR, etc) of the reference signal.
The one or more configuration parameters may indicate a block power (e.g. by a higher layer parameter ss-PBCH-BlockPower). A value of the block power may indicate an average (e.g., a linear average) energy per resource element (EPRE) of resource elements that comprise/carry secondary synchronization signals (SSS). A base station (e.g., the base station 1904, the base station 2004, or the base station 2104) may use the SSS for an SS/PBCH transmission. The value of the block power may be in dBm (e.g., ?60 dBm, ?50 dBm, 0 dBm, 20 dBm, 30 dBm, 50 dBm, or any other value).
The wireless device may derive/determine the average EPRE (e.g., SS/PBCH SSS EPRE) based on the block power. A value of the block power may be equal to (or be defined as, or be substantially equal to) a linear average over power contributions of resource elements comprising/carrying SSS within the operating system bandwidth.
