Minimum-time multidrop broadcast

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Girth, minimum degree, independence, and broadcast independence

An independent broadcast on a connected graph $G$is a function $f:V(G)to mathbb{N}_0$such that, for every vertex $x$ of $G$, the value $f(x)$ is at most the eccentricity of $x$ in $G$,and $f(x)>0$ implies that $f(y)=0$ for every vertex $y$ of $G$ within distance at most $f(x)$ from $x$.The broadcast independence number $alpha_b(G)$ of $G$is the largest weight $sumlimits_{xin V(G)}f(x)$of an ind...

متن کامل

Approximation Algorithms for Minimum Time Broadcast

This paper deals with the problem of broadcasting in minimum time in the telephone and message-passing models. Approximation algorithms are developed for arbitrary graphs as well as for several restricted graph classes. In particular, an O(vfvT)-additive approximation algorithm is given for broadcasting in general graphs, and an O(log n/ log log n) (multiplicative) ratio approximation is given ...

متن کامل

Minimum time broadcast in faulty star networks

In this paper we give new results on the fault{tolerance capabilities of the star graph. We rst consider the problem of determining the maximum number r(n) of vertices in a n! vertices star graph S n such that by removing any set of vertices and/or edges from S n of cardinality at most r(n) the diameter of S n does not increase. Subsequently, we give an algorithm for broadcasting a message in S...

متن کامل

Minimum-Time Broadcast under Edge-Disjoint Paths Modes

This paper aims to study broadcast and multicast communication problems in networks under several variants of the edge-disjoint path mode. We derive upper and lower bounds for the approximability ratios of these problems (i.e., the worst-case ratios of the time required for a protocol computed in polynomial time to complete, over the time of an optimal protocol). These bounds show that slight m...

متن کامل

Rapid Rumor Ramification: Approximating the minimum broadcast time (Extended Abstract)

Given an undirected graph representing of processors, and a source node containing a network a message that must be broadcast to all the nodes, find a scheme that accomplishes the broadcast in the minimum number of time steps. A t each time step, any processor that has received the message is allowed t o communicate the message to at most one of its neighbors in the network, i.e. can communicat...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Discrete Applied Mathematics

سال: 1998

ISSN: 0166-218X

DOI: 10.1016/s0166-218x(97)00104-2