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Questions tagged [ad-hoc-wireless]

For questions about Wireless ad hoc Networks (WANET) or Mobile ad hoc networks (MANET), where the Ad-hoc network does not rely on a pre-existing infrastructure, such as routers in wired networks or access points in managed wireless networks. Use this tag for any question related to ad hoc Wireless networks.

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What is the difference between Power control and Power allocation?

In the context of wireless communication (specifically device-to-device communication) what is the difference between Power control and Power allocation. I guess the latter is a form of resource ...
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Routing in Wireless Ad-Hoc Networks

Let's say I have a mesh of sensors forming a wireless ad-hoc network. If one sensor wants to send data to the sink, it will transmit a packet via WiFi for example. My assumption is that there's no ...
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Ad hoc vs Mesh, which one to use?

Say we have four nodes (A, B, C, D) that are arranged in a chain-like topology. A <-------> B <-------> C <-------> D Only the adjacent nodes are in range of one another (A can ...
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482 views

Are “ad-hoc” networks always wireless?

We see that almost always the term of "ad-hoc networks" comes with WSN (Wireless Sensor Network). Does it mean an ad-hoc network must be always wireless? If we define an ad-hoc network as follows: ...
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1answer
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Rogue Wireless Scanning

Is Rogue Wireless scanning required for a "wired" network? The organization does not have a wireless environment. I am just curious the reasons behind conducting the scan and what is the risk if the ...
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1answer
136 views

What does “convergence” mean in context of mesh networking protocols?

I am reading about mesh networking protocols like BATMAN and OLSR, and I keep coming across the term "convergence". For instance, in this page from the BATMAN docs, there is a section called "...
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1answer
80 views

The difference between routing and path selection

I am having difficulty in understanding the difference between the routing and path selection. I am working on IEEE 802.11s-based mesh networks and reading about the default routing protocol HWMP. In ...
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1answer
101 views

Udp broadcasting for communicate with a device who has the same IP address , is it possible?

I was thinking about broadcasting in an ad-hoc local area network, then i asked me a question.Assuming that this LAN is made of 2 pc, if this pc have the same IP address, Can i send udp packet from ...
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1answer
363 views

RTS threshold set to 0

I know what if you lower RTS threshold value too much, you can introduce more latency into the network, as Requests to Send are increased so much that the shared medium is reserved more often than ...
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1answer
466 views

What is the difference between 'clock synchronization' and 'time synchronization'?

Is there have any difference between this two terms, 'Clock Synchronization' and 'Time Synchronization' in a network? I understand that when clock frequency has corrected to run in same pace is called ...
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1answer
108 views

Overlay star network topology

I am trying to accommodate the following situation and am looking for guidance on whether the topology I am envisioning is possible, what are its implications and what else I should be thinking about. ...
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1answer
37 views

AODV routing accidentally gives two nodes the same IP address

I am learning AODV and if this routing accidentally gives same IP address to two nodes, then how do I send data to this IP address?
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2answers
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WSN vs Ad hoc in real practice

Wireless Sensor Network (WSN) and Ad hoc Network differ in one important factor: Infrastructure-based vs Infrastructure-less. In WSN, network is managed by a base station such as these antenna around ...
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1answer
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Is it possible for secure third-party peering at wireless access points? [closed]

If the question title doesn't make sense, please forgive me, I'm not a networking person. I will try to describe what I mean: When you view your available networks on your computer, some are your ...
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1answer
186 views

Bonjour defeating wireless isolation?

I have two MacBook Pros and a Cisco RV110W wireless router. I have created a VLAN with all ports untagged and I linked this VLAN to a Wi-Fi with the option "Wireless Isolation with SSID" on. From ...
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1answer
599 views

Destination address in a probe request in an 802.11 Ad Hoc network?

I'm investigating an issue with an iPhone controllable hardware, which operates in IBSS / Ad Hoc mode. Since the hardware generation of iPhone6 & Co the iDevices can't connect to the hardware ...
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Unicast forwarding in RBVT-P routing protocol

As known, Road-based using Vehicular Traffic Proactive routing (RBVT-P) is an unicast algorithm whose uses CPs (Connectivity Packets) for route discovery The confusion here is that CPs are sent in ...
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2answers
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Do wireless devices such as smartphones transmit beacon equivalent frames such as APs do?

Can they be made to announce their presence somehow using layer 2 frames without them be connected to any network or access point? Can their MAC address be found?
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1answer
486 views

Features of Windows Ad-hoc Network [closed]

Recently I was doing some tests in a small wireless ad-hoc network and one interesting feature I've found was: Suppose you have a hidden node problem among computers A, B and C (A and C are out of ...
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Raw-Ethernet Frames

Recently I was puzzled by the following articles about Raw-Ethernet frames: RAW ethernet vs. UDP Message Passing Using Raw Ethernet Frames Briefly, both of them discusses that it is possible to ...
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1answer
202 views

In OLSR instead of MS if MPR selector are used, will it work?

In the TC message of OLSR that is created by each node x, x includes its MS set, i.e., a list of nodes that have selected it as an MPR. Assume instead ...
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1answer
196 views

OLSR mobile routing protocol

In OLSR we have the MPR - Multi Point Relays and MS - Multi Point Relay Selector. During the topology control messages flood, each MPR floods its MS set. Based on the MS set info of each node, every ...
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1answer
4k views

Difference between ad-hoc and wifi hotspots

Reason why I'm asking this is because I want to know why mobile phones cannot discover ad-hoc networks created by laptops or PCs?
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1answer
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What is the difference between source and destination sequence number in AODV?

What is the difference between source sequence number and destination sequence number in RREQ packet in AODV?
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1answer
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Searching in NS2

There are some n wireless nodes in the network, each of node responsible for keeping m data items, data items can be integers or complex data items. Randomly each nodes will want to know the specific ...
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Modification of aodv protocol in ns-3 [closed]

I am trying to modify aodv protocol to implement a flooding attack prevention scheme in MANET in NS-3 for my first assignment from an already published paper. The method is to prevent a malicious node ...
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1answer
175 views

How to inform nodes in MANET during route discovery process regarding the receivng of route reply packet by the source

A node which uses an on-demand routing protocol in a mobile ad hoc network when requires to send a packet to another node which is not in the radio coverage range, would do it by initiating a route ...
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215 views

Can we break the Shannon capacity?

I have a friend working in wireless communications research. He told me that we can transmit more than one symbol in a given slot using one frequency (of course we can decode them at the receiver). ...
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1answer
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Difference between RREQ ID and DestSeqNum in RREQ packet of AODV protocol?

What is the difference between RREQ ID and Destination Sequence number (DestSeqNum) in RREQ packet of AODV protocol? DestSeqNum in RREQ packet is used for a reverse route maintaining and should be ...
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1answer
788 views

Destination node sequence number increment policy

I read the following from RFC 3561 - AODV, page 11: A destination node increments its own sequence number in two circumstances: - Immediately before a node originates a route discovery, it MUST ...
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2answers
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AODV sequence numbers and loop prevention

I am learning about the AODV (ad-hoc on-demand distance vector) protocol. I saw a "sequence number" with a value like "A 46"; however, I don't understand why incrementing this sequence number can ...