Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Utility Maximization for Multihop Wireless Networks Employing BATS Codes   BATS (BATched Sparse) codes are a class of efficient random linear network
coding variation that has been studied for multihop wireless networks mostly in
scenarios of a single communication flow. Towards sophisticated multi-flow
network communications, we formulate a network utility maximization (NUM)
problem that jointly optimizes the BATS code parameters of all the flows and
network scheduling. The NUM problem adopts a batch-wise packet loss model that
can be obtained from the network local statistics without any constraints on
packet loss patterns. Moreover, the NUM problem allows a different number of
recoded packets to be transmitted for different batches in a flow, which is
called adaptive recoding. Due to both the probably nonconcave objective and the
BATS code-related variables, the algorithms developed for the existing flow
optimization problems cannot be applied directly to solve our NUM problem. We
introduce a two-step algorithm to solve our NUM problem, where the first step
solves the problem with nonadaptive recoding schemes, and the second step
optimizes adaptive recoding hop-by-hop from upstream to downstream in each
flow. We perform various numerical evaluations and simulations to verify the
effectiveness and efficiency of the algorithm.

14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci