阅读说明：本技术 确定用于传输的rach前置码消息的数目 (Determining the number of RACH preamble messages for transmission ) 是由 M·N·伊斯兰 B·萨迪格 N·阿贝迪尼 于 2018-12-14 设计创作，主要内容包括：描述了用于无线通信的方法、系统和设备。在一些系统中,基站和用户装备(UE)可使用波束成形来传送随机接入信道(RACH)消息。UE可(例如,在随机接入响应(RAR)窗口内)传送多个RACH前置码消息以发起RACH规程。UE可在与从基站接收到的参考信号相对应的传输机会中传送RACH前置码消息。在一些情形中,UE可基于该UE同时监视响应于每个所传送的消息的RAR消息的能力来确定要在RAR窗口内传送的RACH前置码消息的数目。在其他情形中,UE可向基站传送对UE能力的指示。基站可基于这些能力来确定用于UE的RACH资源配置,并且可向该UE指示该配置。(Methods, systems, and devices for wireless communication are described. In some systems, a base station and User Equipment (UE) may transmit a Random Access Channel (RACH) message using beamforming. The UE may transmit multiple RACH preamble messages (e.g., within a Random Access Response (RAR) window) to initiate a RACH procedure. The UE may transmit a RACH preamble message in a transmission opportunity corresponding to a reference signal received from the base station. In some cases, the UE may determine the number of RACH preamble messages to transmit within a RAR window based on the UE's ability to simultaneously monitor RAR messages in response to each transmitted message. In other cases, the UE may transmit an indication of the UE capabilities to the base station. The base station may determine a RACH resource configuration for the UE based on the capabilities and may indicate the configuration to the UE.)