Download e-book for iPad: Ad-hoc, Mobile, and Wireless Networks: 15th International by Nathalie Mitton, Valeria Loscri, Alexandre Mouradian

By Nathalie Mitton, Valeria Loscri, Alexandre Mouradian

ISBN-10: 331940508X

ISBN-13: 9783319405087

ISBN-10: 3319405098

ISBN-13: 9783319405094

This e-book constitutes the complaints of the fifteenth foreign convention on advert Hoc Networks and instant, ADHOC-NOW 2016, held in Lille, France in July 2016.

The 23 complete papers provided including one brief paper during this quantity have been rigorously reviewed and chosen from sixty four submissions. The contributions are geared up in topical sections named: source allocation, thought and communications, PHY/MAC/routing in sensors/IoT, DTN/opportunistic networks, sensors/IoT, protection, VANET and ITS, and robots and MANETs.

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Additional info for Ad-hoc, Mobile, and Wireless Networks: 15th International Conference, ADHOC-NOW 2016, Lille, France, July 4-6, 2016, Proceedings

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Interval Slot Beaconing Cells Cell Tuples Nodes Beacon Duration Nodes Index Beacon Payload Fig. 9. Packet format when using the OCARI custom protocol. 3 Recommended Optimizations Table 4 summarizes the total number of messages to install and update the schedule. The detailed computation of the number of messages can be found in [8]. It shows that a standard-based approach is less efficient than a custom-built protocol by a factor of 4 or more. Simple changes to the standards allow them to be much more efficient.

However, it should be noted that MGS policy is neither necessary nor sufficient for optimality. More specifically, we create the matrix H, which is structured based on the line-of-sight (LOS) channel gain Hu;t between each user u 2 U and OAP t 2 T. 2 H1;1 6 H2;1 6 Hðu; tÞ ¼ 6 6Á 4Á HU;1 H1;2 H2;2 Á Á HU;2 ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ 3 H1;T 7 Á 7 7 Á 7 5 Á HU;T ð8Þ According to users’ path gain matrix H, each user selects the OAP to connect to and communicate with based on MGS policy as follows: là ¼ fuà ; tà g ¼ arg max H(u,t) ð9Þ t2T It should be noted that after the OAP selection process, each OAP t 2 T knows the number of users Nt that are connected to its corresponding cell.

The scheduler contacts each node once and transfers a list of cells that must be updated, encoded as a CoAP PATCH. This allows it to send only the differences between the current schedule and the new one. An example CoAP PATCH which modifies the nodeAddress and linkType fields of the cell with slotOffset = 1 and channelOffset = 2 is presented in Fig. 6. When the payload of the PATCH is too long for a single frame, CoAP Block is used for application-layer fragmenting. B(u) blocks are transmitted to node u, the scheduler receives an acknowledgment per block, as recommended in [11].

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Ad-hoc, Mobile, and Wireless Networks: 15th International Conference, ADHOC-NOW 2016, Lille, France, July 4-6, 2016, Proceedings by Nathalie Mitton, Valeria Loscri, Alexandre Mouradian

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