1. A method for setting a routing path in a mobile ad hoc network environment, comprising:
receiving a packet, which is periodically broadcast from a neighbor node;
measuring quality of a link with the neighbor node through the received packet;
calculating routing paths, using routing information of the neighbor node when the measured link quality is higher than a first threshold value; and
setting a shortest routing path to a destination node, among the calculated routing paths, as a path for data packet transmission.
2. The method of claim 1, wherein the packet comprises the routing information of the neighbor node.
3. The method of claim 1, wherein the link quality is a SNR value based on a signal strength of the received packet.
4. The method of claim 1, further comprising;
re-measuring the link quality of the neighbor node through a received packet when the packet that is periodically broadcast from the neighbor node is re-received;
calculating routing paths using routing information of the neighbor node when the re-measured link quality is higher than a second threshold value; and
setting the shortest routing path to a destination node as the path for data packet transmission, among the routing paths calculated using routing information of the neighbor node when the re-measured link quality is higher than the second threshold value.
5. The method of claim 4, wherein the first threshold value is higher than the second threshold value.
6. A method for managing a neighbor node in a mobile ad hoc network environment, comprising:
receiving a packet that is periodically broadcast from a neighbor node;
measuring quality of a link with the neighbor node through the received packet; and
managing the neighbor node in a first node group or a second node group according to the measured link quality.
7. The method of claim 6, wherein the packet comprises routing information of the neighbor node.
8. The method of claim 6, wherein the link quality is a SNR value based on a signal strength of the received packet.
9. The method of claim 6, wherein managing the neighbor node comprises:
searching for the neighbor node in the first node group;
comparing the measured link quality with a first threshold value when the neighbor node is not found during the search;
classifying the neighbor node into the first node group when the link quality is higher than the first threshold value; and
classifying the neighbor node into the second node group when the link quality is lower than the first threshold value.
10. The method of claim 9 further comprising:
comparing the measured link quality with a second threshold value when, as a result of searching, the neighbor node is found in the first node group;
maintaining the neighbor node in the first node group when the link quality is found to be higher than the second threshold value; and
classifying the neighbor node into the second node group when, as a result of the comparison with the second threshold value, the link quality is found to be lower than the second threshold value.
11. The method of claim 7, wherein the routing information of the neighbor node managed in the first node group is used in calculating a routing path.
12. The method of claim 6, further comprising deleting the neighbor node from the first node group or the second node group when a packet is not received from the neighbor node managed by the first node group or the second node group during a certain time period.
13. A network apparatus comprising:
a transceiving unit which is configured to receive a packet periodically broadcast from a neighbor node;
a measuring unit which is configured to measure quality of a link with the neighbor node using the packet received through the transceiving unit;
a comparison unit which is configured to compare the measured link quality with a first threshold value; and
a routing unit which calculates routing paths using routing information of the neighbor node when, as a result of the comparison by the comparison unit, the link quality is found to be higher than the first threshold value, and sets a shortest routing path to a destination node, among the calculated routing paths, as a path for data packet transmission.
14. The apparatus of claim 13, wherein the packet includes the routing information of the neighbor node.
15. The apparatus of claim 13, wherein the link quality is a SNR value based on a signal strength of the received packet;
16. The apparatus of claim 13, w,herein, when the transceiving unit re-receives a packet periodically broadcast from the neighbor node, the measuring unit re-measures the quality of a link with the neighbor node, using the re-received packet, and the comparison unit compares the re-measured link quality with a second threshold value, and the routing unit sets a shortest routing path to a destination node as a path for data packet transmission, among the routing paths calculated using the routing information of the neighbor node whose re-measured link quality is higher than the second threshold value when, as a result of comparison by the comparison unit, the link quality is found to be higher than the second threshold value.
17. The apparatus of claim 16, wherein the first threshold value is higher than the second threshold value.
18. A network apparatus comprising:
a transceiving unit which is configured to receive a packet periodically broadcast from a neighboring node;
a measuring unit which is configured to measure quality of a link with the neighbor node based on the received packet; and
a management unit which is configured to manage the neighbor node in a first node group or a second node group according to the measured link quality.
19. The apparatus of claim 18, wherein, the packet includes routing information of the neighbor node.
20. The apparatus of claim 18, wherein the link quality is a SNR value based on a signal strength of the received packet.
21. The apparatus of claim 18, wherein the measurement unit comprises:
a search unit which is configured to search for the neighbor node in a first node group;
a comparison unit which is configured to compare the link quality of the neighbor node with a threshold value according to a result of the search by the search unit; and
a group setting unit which is configured to classify the neighbor node into the first node group or the second node group according to the result of the comparison by the comparison unit.
22. The apparatus of claim 21, wherein the threshold value becomes a first threshold value when the neighbor node is not found in the first node group as a result of the search by the search unit; and
when, as a result of comparison by the comparison unit, the link quality is found to be higher than the first threshold value, the group setting unit classifies the neighbor node into the first node group, and when the link quality is lower than the first threshold value, the group setting unit classifies the neighbor node into the second node group.
23. The apparatus of claim 21, wherein the threshold value becomes a second threshold value when the neighbor node is found in the first node group as a result of the search by the search unit, and
when, as a result of comparison by the comparison unit, the link quality is found to be higher than the second threshold value, the group setting unit maintains the neighbor node in the first node group, and when the link quality is lower than the second threshold value, the group setting unit classifies the neighbor node into the first node group.
24. The apparatus of claim 21, wherein routing information of the neighbor node classified into the first node group is used in calculating a routing path.
25. The apparatus of claim 21, wherein the group setting unit deletes the neighbor node managed in the first node group or the second node group from the first node group or the second node group when a packet is not received from the neighbor node during a certain time period.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A projectile constructed and arranged for luminous marking of an impact area, composed of a hollow cylindrical body (1), comprising one or more inertial masses (2) capable of moving during acceleration, positive or negative, involved in a process of firing, which movement causes bursting of one or more membranes (3, 4) separating, inside said hollow body (1) of the projectile, two or more chambers (5, 6) each of which contains at least one liquid with chemiluminescent potential, which liquids emit light when mixed together.
2. The projectile according to claim 1 above, further characterized in that one or more of the inertial masses, when placed in motion, are arranged in the form of a piston (2) inside the hollow cylindrical body (1), and are capable of causing the expulsion to the outside, through one or more orifices (23) provided in the walls of said projectile, of a light-emitting liquid mixture.
3. The projectile according to claim 1 above, further characterized in that the membrane or membranes (3, 4) to be burst comprise, in addition to a physical separation of said chemical liquids prior to their being mixed, a barrier against diffusion of any component element of these liquids, which diffusion could hinder the preservation of integrity of their properties during storage.
4. The projectile according to claim 1, further characterized in that the membrane or membranes are comprised of thin aluminum foil.
5. The projectile according to claim 4, characterized in that said aluminum foil is lacquered on at least one of its faces with a heat-sealable polymer varnish, said aluminum foil having been heat-sealed at its periphery by means of instantaneous application of heat, to said body of the projectile, or any intermediate piece, so as to form said abovementioned chamber or chambers.
6. The projectile according to claim 5 above, characterized in that said heat-sealable polymer varnish is neutral without chemical influence on the liquids or preservation of the liquids with chemiluminescent potential with which it is in contact, and is itself not dissolved by the solvents of said liquids.
7. The projectile according to claim 1 above, further characterized in that it is provided at a front portion with a cylindrical-shaped plug (2) that can slide inside said body while extending beyond it in the front, in such a way that it is the first surface that meets the target upon impact, said cylinder being provided with hollow longitudinal fluting (21) on its peripheral surface that allows exiting of a luminous mixture under pressure, the hollow fluting comprising channels of small enough cross section to ensure a slight lamination of the liquid whose mixture is desired.
8. The projectile according to claim 1, further characterized in that it comprises a duct providing communication between the interior of the projectile and the external atmosphere, which duct can allow expulsion of illuminated liquid and can be provided with a plug intended to be released during impact upon arrival.
9. The projectile according to claim 1, further characterized in that said main body is sealed, without orifices allowing the expulsion of a luminous liquid, and has translucent or transparent walls.
10. The projectile according to claim 1, further provided, in addition to the abovementioned liquids, in one or more of its chambers, with compounds (14) that can have a gas-emitting reaction when they are mixed together following bursting of one or more membranes separating said chambers.
11. The projectile according to claim 1, characterized in that the body of the projectile andor plug is made of an elastomeric polymer material.
12. The projectile according to claim 11, further characterized in that, in a front part of the body, the walls thereof have accordion-like folds (12) so as to facilitate crushing against a target with reduction of volume.
13. The projectile according to claim 1, characterized in that said inertial masses are provided, on the side facing a membrane, with a pointed or pyramidal structure (7) for facilitating bursting.