Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Subband Random Sensing Grant Free Uplink for URLLC in Unlicensed
  Spectrum   In this paper, we propose a novel scheme called subband random sensing (SRS)
grant free uplink for ultra-reliable low-latency communication (URLLC) in
unlicensed spectrum. The SRS grant free uplink creatively combines the subband
sensing, user grouping and random access, which allows a user sensing the
unlicensed spectrum to use available sub-resources in a wideband and reduce
collisions with other users. The new scheme overcomes the severe spectrum
wastage problem of the semi-persistent scheduling (SPS) uplink adopted by new
radio (NR) release 16 in applications with sporadic traffic. Compared with the
contention based grant free uplink, the new scheme achieves much lower
collision probability, which directly leads to higher reliability. Analysis and
simulations are provided to prove the exceptional performances.

26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
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The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn