Certain embodiments disclose a method in a network node. The method broadcasts a location of a time and/or frequency resource of a first Physical Random Access Channel (PRACH). The first PRACH has a static location. The method determines a location of a time and/or frequency resource for a second PRACH. The location of the second PRACH is determined dynamically. The method communicates downlink control information to a wireless device. The downlink control information indicates the location of the second PRACH. The method receives a random access attempt from the wireless device. The random access attempt is received via the first PRACH or the second PRACH. The method communicates a random access response to the wireless device.
申请公布号
WO2017046672(A1)
申请公布日期
2017.03.23
申请号
WO2016IB55280
申请日期
2016.09.02
申请人
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人
TIRRONEN, Tuomas;YILMAZ, Osman Nuri Can;MÄÄTTANEN, Helka-Liina;SAHLIN, Henrik