IEEE 802.11s (mesh) draft standard implementation. More...
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Classes | |
| class | ns3::dot11s::AirtimeLinkMetricCalculator |
| airtime link metric calculator More... | |
| class | ns3::dot11s::MeshHeader |
| Mesh Control field, see IEEE 802.11s draft 3.0 section 7.1.3.5b. More... | |
| class | ns3::dot11s::HwmpProtocolMac |
| Interface MAC plugin for HWMP -- 802.11s routing protocol. More... | |
| class | ns3::dot11s::HwmpProtocol |
| Hybrid wireless mesh protocol -- a routing protocol of IEEE 802.11s draft. More... | |
| class | ns3::dot11s::HwmpRtable |
| Routing table for HWMP -- 802.11s routing protocol. More... | |
| class | ns3::dot11s::HwmpTag |
| Hwmp tag implements interaction between HWMP protocol and MeshWifiMac. More... | |
| class | ns3::dot11s::IeBeaconTimingUnit |
| Describes one unit of beacon timing element. More... | |
| class | ns3::dot11s::IeBeaconTiming |
| See 7.3.2.89 of 802.11s draft 2.07. More... | |
| class | ns3::dot11s::Dot11sMeshCapability |
| See 7.3.2.86.7 in 802.11s draft 3.0. More... | |
| class | ns3::dot11s::IeConfiguration |
| Describes Mesh Configuration Element see 7.3.2.86 of 802.11s draft 3.0. More... | |
| class | ns3::dot11s::IePeerManagement |
| See 7.3.2.85 of draft 2.07. More... | |
| class | ns3::dot11s::IePerr |
| See 7.3.2.98 of 802.11s draft 2.07. More... | |
| class | ns3::dot11s::IePrep |
| See 7.3.2.97 of 802.11s draft 2.07. More... | |
| class | ns3::dot11s::DestinationAddressUnit |
| Describes an address unit in PREQ information element See 7.3.2.96 for more details. More... | |
| class | ns3::dot11s::IePreq |
| See 7.3.2.96 of 802.11s draft 2.07. More... | |
| class | ns3::dot11s::IeRann |
| See 7.3.2.95 of 802.11s draft 2.07. More... | |
| class | ns3::dot11s::PeerLinkFrameStart |
| 802.11s Peer link management frame: More... | |
| class | ns3::dot11s::PeerLink |
| Peer link model for 802.11s Peer Management protocol. More... | |
| class | ns3::dot11s::PeerManagementProtocolMac |
| This is plugin to Mesh WiFi MAC, which implements interface to dot11s peer management protocol: it takes proper frames from MAC-layer, extracts peer link management information element and mesh configuration element and passes it to main part of protocol. More... | |
| class | ns3::dot11s::PeerManagementProtocol |
| 802.11s Peer Management Protocol model More... | |
| class | ns3::MeshHelper |
| Helper to create IEEE 802.11s mesh networks. More... | |
Typedefs | |
| typedef std::vector< Ptr < IeBeaconTimingUnit > > | ns3::dot11s::IeBeaconTiming::NeighboursTimingUnitsList |
Enumerations | |
| enum | ns3::dot11s::dot11sPathSelectionProtocol { PROTOCOL_HWMP = 0x000fac00 } |
See 7.3.2.86.1 in 802.11s draft 3.0. | |
| enum | ns3::dot11s::dot11sPathSelectionMetric { METRIC_AIRTIME = 0x000fac00 } |
See 7.3.2.86.2 in 802.11s draft 3.0. | |
| enum | ns3::dot11s::dot11sCongestionControlMode { CONGESTION_SIGNALING = 0x000fac00, CONGESTION_NULL = 0x000facff } |
See 7.3.2.86.3 in 802.11s draft 3.0. | |
| enum | ns3::dot11s::dot11sSynchronizationProtocolIdentifier { SYNC_NEIGHBOUR_OFFSET = 0x000fac00, SYNC_NULL = 0x000facff } |
See 7.3.2.86.4 in 802.11s draft 3.0. | |
| enum | ns3::dot11s::dot11sAuthenticationProtocol { AUTH_NULL = 0x000fac00, AUTH_SAE = 0x000fac01 } |
See 7.3.2.86.5 in 802.11s draft 3.0. | |
| enum | ns3::dot11s::PmpReasonCode { REASON11S_PEERING_CANCELLED = 2, REASON11S_MESH_MAX_PEERS, REASON11S_MESH_CAPABILITY_POLICY_VIOLATION, REASON11S_MESH_CLOSE_RCVD, REASON11S_MESH_MAX_RETRIES, REASON11S_MESH_CONFIRM_TIMEOUT, REASON11S_MESH_INVALID_GTK, REASON11S_MESH_INCONSISTENT_PARAMETERS, REASON11S_MESH_INVALID_SECURITY_CAPABILITY, REASON11S_RESERVED } |
Codes used by 802.11s Peer Management Protocol. | |
Detailed Description
IEEE 802.11s (mesh) draft standard implementation.
Current model conforms IEEE 802.11s D3.0 draft version and includes Peer Management Protocol and HWMP (routing) Protocol implementations.
The multi-interface mesh points are supported as an extension of IEEE draft version 3.0. Note that corresponding helper creates single interface station by default.
Overview of IEEE 802.11s
Implementation of 802.11s draft standard consists of two main parts: Peer management protocol and HWMP - Hybrid Wireless Mesh Protocol.
The task of peer management protocol is the following: -open links detecting beacons and starting peer link finite state machine. -close peer links due to transmission failures or beacon loss.
If peer link between sender and receiver does not exist, the packet will be dropped. So, the plug-in to peer management protocol is the first in the list of ns3::MeshWifiInterfaceMacPlugin
Peer management protocol
Peer management protocol consists of three main parts:
- Protocol itself ns3::dot11s::PeerManagementProtocol, which keeps all active peer links on interfaces, handles all changes of their states and notifies a routing protocol about link failures.
- MAC plug-in ns3::dot11s::PeerManagementProtocolMac which drops packet, if there is no peer link, and peek all needed information from management frames and information elements from beacons.
- Peer link ns3::dot11s::PeerLink which keeps finite state machine of each peer link, keeps beacon loss counter and counter of successive transmission failures.
Procedure of closing peer link is not described detailed in 802.11s draft standard, so in our model the link may be closed by:
- beacon loss (see an appropriate attribute of ns3::dot11s::PeerLink class)
- transmission failure -- when a predefined number of successive packets have failed to transmit, the link will be closed.
Also Peer management protocol is responsible for beacon collision avoidance, because it keeps beacon timing elements from all neighbours. Note, that PeerManagementProtocol is not attached to MeshPointDevice as a routing protocol, but the structure is similar: the upper tier of protocol ns3::dot11s::PeerManagementProtocol and its plug-in is ns3::dot11s::PeerManagementProtocolMac.
Hybrid Wireless Mesh Protocol
HWMP is implemented in both modes -- reactive and proactive. Also we have implemented an ability to transmit broadcast data and management frames as unicasts (see appropriate attributes). This feature turns off at a station when the number of neighbours of the station is more than a threshold.
Typedef Documentation
typedef std::vector< Ptr<IeBeaconTimingUnit> > ns3::dot11s::IeBeaconTiming::NeighboursTimingUnitsList [inherited] |
This type is a list of timing elements obtained from neighbours with their beacons:
