NB LTE PRACH design
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsXingqin Lin, Ansuman Adhikary, Niklas Johansson, Yi-Pin Eric Wang
Life of this patent
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Abstract
A method in a user equipment is disclosed. The method comprises generating a narrowband random access preamble for a narrowband random access procedure, the narrowband random access preamble comprising a Zadoff-Chu sequence. The method comprises transmitting, to a network node, the generated narrowband random access preamble via a narrowband physical random access channel (PRACH) according to a narrowband PRACH format, wherein the narrowband PRACH is frequency multiplexed with a physical uplink shared channel (PUSCH) and comprises: at least one narrowband PRACH slot having a narrowband PRACH slot duration; and a narrowband PRACH period.
Claims24
A method in a user equipment, comprising:
- transmitting, to a network node, a narrowband random access message via a narrowband physical random access channel (PRACH),
- wherein the narrowband PRACH includes at least one narrowband PRACH slot having a plurality of segments and the narrowband random access message includes a narrowband random access preamble repeated in a plurality of segments of the at least one narrowband PRACH slot, and
- wherein the same narrowband random access preamble is repeated in the plurality of segments.
A method in a network node, comprising:
- receiving, from a user equipment, a narrowband random access message via a narrowband PRACH,
- wherein the narrowband PRACH includes at least one narrowband PRACH slot having a plurality of segments and the narrowband random access message includes a narrowband random access preamble repeated in a plurality of segments of the at least one narrowband PRACH slot, and
- wherein the same narrowband random access preamble is repeated in the plurality of segments.
A user equipment, comprising:
- one or more processors, the one or more processors configured to:
- transmit, to a network node, a narrowband random access message via a narrowband PRACH,
- wherein the narrowband PRACH includes at least one narrowband PRACH slot having a plurality of segments and the narrowband random access message includes a narrowband random access preamble repeated in a plurality of segments of the at least one narrowband PRACH slot, and
- wherein the same narrowband random access preamble is repeated in the plurality of segments.
A network node, comprising:
- one or more processors, the one or more processors configured to:
- receive, from a user equipment, a narrowband random access message via a narrowband PRACH,
- wherein the narrowband PRACH includes at least one narrowband PRACH slot having a plurality of segments and the narrowband random access message includes a narrowband random access preamble repeated in a plurality of segments of the at least one narrowband PRACH slot, and
- wherein the same narrowband random access preamble is repeated in the plurality of segments.
Dependencies are inferred from the claim text.