US 12,464,559 B2
Wireless device, a network node, and methods therein for determining an identity of a wireless device during a random access procedure
Robert Mark Harrison, Grapevine, TX (US); Jan Christoffersson, Luleå (SE); Zhipeng Lin, Nanjing (CN); Johan Rune, Lidingö (SE); and Henrik Enbuske, Stockholm (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/770,545
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Nov. 5, 2020, PCT No. PCT/SE2020/051060
§ 371(c)(1), (2) Date Apr. 20, 2022,
PCT Pub. No. WO2021/091461, PCT Pub. Date May 14, 2021.
Claims priority of provisional application 62/931,894, filed on Nov. 7, 2019.
Prior Publication US 2022/0394776 A1, Dec. 8, 2022
Int. Cl. H04W 74/00 (2009.01); H04W 74/0833 (2024.01)
CPC H04W 74/0833 (2013.01) [H04W 74/002 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method performed by a wireless device for determining an identity of the wireless device, MsgB RNTI, in a wireless communications network during a random access procedure, the identity of the wireless device being a Radio Network Temporary Identifier, RNTI, to be used for MessageB, MsgB, transmission of the random access procedure, an MsgB transmission being identifiable by the wireless device via the MsgB RNTI, the method comprising:
transmitting a random access preamble on a Random Access Channel, RACH, at a random access occasion, time/frequency resources of the random access occasion being identified by at least an index of a first Orthogonal Frequency Division Multiplexing, OFDM, symbol, an index of a frequency resource, and an index of a first time slot;
transmitting a message on a Physical Uplink Shared Channel, PUSCH, that corresponds to the random access preamble; and
determining the MsgB RNTI as a sum of a first identity and an offset that is an integer greater than 1, the first identity being a Random Access RNTI, RA-RNTI, and being based on a sum comprising terms corresponding to at least the index of the first OFDM symbol, the index of the frequency resource, and the index of the first time slot that identifies the time/frequency resources of the random access occasion, the offset being determined as a modulo division of the index associated with any of the first OFDM symbol, the frequency resource, and the time slot, that identifies the random access occasion of the transmitted random access preamble, by a positive integer divisor.