KR101474480B1 - METHOD OF ESTABLISHING ROUTING OF IEEE 11073 PHD BASED ON 6LoWPAN AND SYSTEM THEREOF - Google Patents

Abstract

The present invention relates to a resilient routing building method of IEEE 11073 PHD apparatus based on 6LoWPAN and a system thereof. An agent and a manager according to an IEEE 11073 PHD standard based on 6LoWPAN set up a main path and a recovery path for transmitting bio information when building routing on the 6LoWPAN. The agent transmits the bio information to the manager by using the main path. The agent transmits the bio information to the manager by using the recovery path in a case there is an error in transmission. Therefore, the reliability of transmission of critical time information such as the bio information is secured without consuming the time for building a new path in a case there is an error.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of establishing routing of an IEEE 11073 PHD device based on 6LoWPAN,

The present invention relates to a routing establishment method and system of an IEEE 11073 PHD device based on an IPv6 Low Power Wireless Personal Area Network (6LoWPAN). More particularly, the present invention relates to a method and system for IEEE 11073 PHD devices on 6LoWPAN to establish routing for transmitting biometric information.

IETF (Internet Engineering Task Force) 6LoWPAN standard technology is being studied as a standard technology to support IPv6 (Internet Protocol version 6) packet communication in IoT (Internet of Things) environment. The 6LoWPAN standard is an architecture for using Internet protocols on a low-power wireless private network, represented by the Institute of Electrical and Electronics Engineers (IEEE) 802.15.4. Since 6LoWPAN operates on IPv6 basis, it is more suitable for sensor network environment than Zigbee or Bluetooth and can be widely used in ubiquitous network environment which requires continuous data collection and transmission.

6LoWPAN Ad-hoc On-Demand Distance Vector (LOAD) routing protocol that extends the AODV (Ad Hoc On-Demand Distance Vector) routing protocol, and Dynamic MANET On-demand for DYMO-Low 6LoWPAN Routing).

In the mobile healthcare service, the International Institute of Electrical and Electronics Engineers (IEEE) has proposed the IEEE 11073 PHD standard for interoperability related to medical information sensing or medical information transmission between devices

For mobile healthcare services, the IEEE has developed the IEEE 11073-20601 PHD standard for a variety of medical monitoring services for transmitting and storing biometric information, but the IEEE 11073-20601 PHD standard is designed to provide high reliability in biometric information transmission No mechanism is specified. There is a growing demand for the operation and expansion of IP to sensor nodes in the mobile healthcare network structure.

There have been many attempts to use 6LoWPAN as a mobile healthcare network for this purpose. Quality of Service (QoS) requirements in 6LoWPAN may vary depending on the application being used. In particular, mobile healthcare applications are time-critical, requiring faster recovery routing techniques. Therefore, 6LoWPAN-based routing technology for mobile healthcare service is needed.

Korean Patent No. 0969802

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and apparatus for establishing resilient routing based on IEEE 11073 PHD based on 6LoWPAN.

The technical objects of the present invention are not limited to the above-mentioned technical problems, and other technical subjects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a method of establishing a routing of a 6LoWPAN-based IEEE 11073 PHD device according to an aspect of the present invention, including the steps of: establishing an agent according to IEEE (Institute of Electrical and Electronics Engineers) 11073 personal health device Transmitting a route setting request packet for establishing a main route to a manager according to the IEEE 11073 PHD specification via an intermediate node,

When the manager receives the routing request packet, transmitting a routing response packet to the agent via the intermediate node as a destination, and when the intermediate node receives the routing response packet, Establishing a recovery path to the manager, the intermediate node sending the routing response packet to a previous node on the primary route, and when the agent receives the routing response packet, The restoration path may include a step of constructing a restoration path up to.

According to one embodiment, the intermediate node includes a node on the primary path excluding the agent and the manager, and the neighboring node may include a node that is a one-hop distance from a particular node.

According to one embodiment, the routing table stores routing information of the agent, the intermediate node, the neighbor node, and the recovery path, and the routing table includes a previous node column, a next node column, A node column, a neighbor node column, and a recovery node column.

According to one embodiment, the step of transmitting the routing request packet via the intermediate node includes the steps of: when the intermediate node receives the routing request packet, transmitting the routing request packet to a neighbor node of the intermediate node; And the intermediate node updating the routing table of the intermediate node.

According to an embodiment, the step of updating the routing table may include selecting one of the neighbor nodes of the intermediate node as a next node using a link quality indicator (LQI) and an energy level, And storing the next node in the next node column of the routing table of the intermediate node.

According to one embodiment, the step of establishing a recovery path by the intermediate node includes the steps of the intermediate node sending a recovery path setting packet to a neighbor node of the intermediate node, and when the neighboring node receives the recovery path setting packet If the path information to the manager is stored in the routing table of the neighbor node, transmits a recovery path response packet to the intermediate node if the path information to the manager is stored in the routing table of the neighbor node, And storing the sender node of the recovery path response packet in the recovery node column of the routing table of the intermediate node when the intermediate node receives the recovery path response packet.

According to one embodiment, the step of the agent establishing a recovery path includes the steps of the agent sending a recovery path setup packet to a neighbor node of the agent, and when the neighbor node receives the recovery path setup packet, If the path information to the manager is stored in the routing table of the neighbor node, the recovery path response packet is transmitted. If the path information to the manager is not stored, the recovery path setup packet is transmitted to the neighbor node of the neighbor node And when the agent receives the recovery path response packet, storing the source node of the recovery path response packet in the recovery node column of the agent's routing table.

According to another aspect of the present invention, there is provided a routing establishment system of an IEEE 11073 PHD device based on 6LoWPAN, wherein a main path from the manager to the manager is established by transmitting a manager setup request packet according to the IEEE 11073 PHD specification An agent in accordance with the IEEE 11073 PHD rule for establishing a recovery path to the manager upon receiving a path setting response packet, and a controller for, when receiving the path setting request packet, And an intermediate node that transmits a routing response packet to the agent when the routing response packet is received, and transmits the routing response packet to the agent when the routing response packet is received, Upon receiving the route setting request packet, the route setting response packet is transmitted to the intermediate node I can send it.

According to one embodiment, the agent, the intermediate node, and the manager belong to a 6LoWPAN-based multi-hop wireless network and can have an IP address of IPv6 (Internet Protocol version 6) standard.

According to an embodiment, the agent, the intermediate node, the neighbor node, and the manager include a routing table storing path information of the main path and the recovery path, the routing table including a previous node column, The next node column, the neighbor node column, and the recovery node column.

According to one embodiment, the intermediate node transmits the routing request packet to a neighbor node of the intermediate node when receiving a routing request packet to construct the main route, May be selected as a next node based on a link quality indicator (LQI) and an energy level, and the selected next node may be stored in a next node column of the routing table of the intermediate node.

According to one embodiment, the intermediate node transmits a recovery path setting packet destined for the manager to a neighbor node of the intermediate node to establish the recovery path, and upon receiving the recovery path response packet, And storing the originator node of the path response packet in the recovery node column of the routing table of the intermediate node.

According to one embodiment, the agent sends a recovery path setup packet destined for the manager to a neighbor node of the agent to establish the recovery path, and upon receiving the recovery path response packet, May be stored in the recovery node column of the agent's routing table.

According to the present invention, when resilient routing is established in the 6 LowWPAN environment and devices according to the IEEE 11073 PHD standard use the routing, when a failure occurs on the routing, the node can reliably recover from the failed node The burden on the entire network can be reduced.

FIGS. 1A through 4B illustrate a process of constructing a main path according to an embodiment of the present invention.
5A and 8B illustrate a process of constructing a recovery path according to an embodiment of the present invention.
9 is a message flow diagram for establishing a primary path and a recovery path, according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

The present invention relates to a method and apparatus for transmitting biometric information by an agent and a manager according to IEEE 11073 PHD based on 6LoWPAN. The 6LoWPAN is an IPv6 network of low-power devices and is composed of a plurality of nodes. The agent transmits biometric information to the manager using the nodes constituting the 6LoWPAN.

Hereinafter, a method and apparatus for configuring the agent for routing information to the manager will be described.

First, referring to FIG. 1A, the 6LoWPAN environment will be described in detail.

6LoWPAN is an IPv6 based low power wireless local area network. Each node of 6LoWPAN has a separate IP address of IPv6. Each node has a routing table internally storing routing information. The routing table may be updated at the time of establishing the main path and the recovery path.

For convenience of explanation, it is assumed that each node is arranged in the 6LoWPAN as shown in FIG. 1A. B12 and B13 of the intermediate node P1 and the neighboring nodes B21 and B22 of the intermediate node P2 and the intermediate nodes P1 and P2 of the intermediate node P1 are set as the destination node S and the destination node D, ).

The agent and the manager of the IEEE 11073 PHD standard correspond to the source node S and the manager corresponds to the destination node D in order to use the 6LoWPAN. Hereinafter, the source node S is referred to as the agent S and the destination node D is described as the manager D. [

Next, referring to FIG. 1B, a routing table 200 existing in each node of the 6LoWPAN will be described. The routing table 200 may include an old node column 210, a next node column 220, a neighbor node column 230, and a recovery node column 240. The nodes may use the node information stored in each of the columns 210, 220, 230, and 240 of the routing table 200 to determine a destination node to which data is to be transmitted.

For example, the respective columns of the routing table 200 will be described using an arbitrary node A on the main path stored in the routing table 200 as follows.

The previous node column 210 stores the node information immediately before the node A on the main path. In the next node column 220, the next node information of the node A is stored on the main path. In the neighbor node column 230, information of a node adjacent to the node A and having a hop count of 1 and the node A is stored. In the recovery node column 240, information of a node bypassing a node stored in the next node column 220 when a failure occurs in the main path is stored. The information of the node stored in each column may include the IP address of the node.

Referring now to Figures 2a-8b, a method for establishing resilient routing in accordance with the IEEE 11073 PHD standard on a 6LoWPAN basis will be described.

The agent S broadcasts a Routing Request (RRQE) packet to the neighboring node of the agent S in order to establish the main route. The broadcasting refers to a transmission method in which a specific node is not transmitted to a destination but is transmitted to an unspecified node. The neighboring node, which has received the route setting request packet, transmits a response signal (ACK) to the agent S in response thereto. The response signal ACK may include an IP address of a node that transmitted the ACK, a link quality indicator (LQI), and an energy level of a signal. The link quality index is an index indicating a value proportional to the signal strength of the acknowledgment signal (ACK).

The agent S receives the response signal ACK and transmits the information of the neighboring nodes P1, B11 and B12 that transmitted the acknowledgment ACK to the neighboring node column of the routing table 300 of the agent S Can be stored.

The agent S may receive the acknowledgment ACK and select the next node on the main path and store it in the routing table 300. [ The agent S can select the node having the smallest value of the link quality index included in the response signal ACK among the neighboring nodes that have transmitted the response signal ACK as the next node. If the minimum value of the link quality index is the same, the node having the highest energy level among the neighboring nodes may be selected as the next node. For convenience of explanation, the agent S selects the node P1 as the next node.

Referring to FIG. 1B, node P2 is stored in the next node column of the routing table 300, and neighbor nodes B11 and B12 are stored in the neighbor node column of the routing table 300 except for the node P1.

The node P1 selected as the next node by the agent S becomes an intermediate node. The intermediate node includes a node located between the agent (S) and the manager (D) on the main path.

The agent S may transmit the routing request packet to the node P1 unicastly to notify that the node P1 has been selected as the next node. The routing request packet may include a hop count indicating a distance from the agent S. For example, the routing request packet transmitted from the agent S to the node P1 may include a hop count having a value of one. The hop count may be increased to a certain size each time the node moves by one. For example, if the routing request packet is transmitted to another node, the hop count included in the routing request packet may be incremented by one.

3A, a method of constructing the main path by the node P1, which is an intermediate node, will be described.

The node P1 can confirm that the previous node is the agent S on the main route using the sender IP included in the received route setting request packet. The node P1 stores the agent S in the previous node column of the routing table 300. [

The node P1 broadcasts a route setting request packet to the neighboring nodes B11, B12, B13 and P2. The neighboring nodes B11, B12, B13, and P2, which have received the routing request packet, transmit a response signal (ACK) to the node P1 in response thereto. The response signal ACK may include the IP address of the node B11, the node B12, the node B13, or the node P2 that has transmitted the response signal ACK, the link quality index, and the energy level of the node.

The node P1 may receive the acknowledgment ACK and store the information of the neighboring nodes B11, B12, B13 and P2 that transmitted the acknowledgment ACK in the neighboring node column of the routing table 400 of the node P1 have.

The node P1 may receive the response signal (ACK), select the next node on the main path, and store the selected node in the routing table 400. The node P1 selects the node having the largest minimum link quality index included in the acknowledgment signal ACK among the neighbor nodes B11, B12, B13 and P2 that transmitted the acknowledgment ACK as the next node . If the minimum value of the link quality index is the same, the node having the highest energy level can be selected as the next node. For convenience of explanation, the node P1 selects the node P2 as the next node.

3B, the node P2 is stored in the next node column of the routing table 400, and the neighbor nodes B11, B12, and B13 are stored in the neighbor node columns of the routing table 400 except for the node P2.

The node P1 can transmit the routing request packet to the node P2 again in a unicast manner to notify that the node P2 has been selected as the next node. The routing request packet transmitted from the node P1 to the node P2 may include a hop count having a value of 2.

Referring to FIG. 4A, a method of constructing the main path at an intermediate node P2 will be described.

The node P2 can confirm that the previous node is the node P1 on the main path by using the sender IP included in the received route setting request packet. Node P2 stores node P1 in the previous node column of routing table 400. [

The node P2 broadcasts a route setting request packet to the neighboring nodes B21, B22, and D. The neighboring nodes B21, B22, and D, which have received the routing request packet, transmit a response signal ACK to the node P2 in response thereto. The response signal ACK may include the IP address of the node B21, B22, D that transmitted the acknowledgment ACK, the link quality index, and the energy level of the node.

The node P2 may receive the acknowledgment ACK and store the information of the neighboring nodes B21, B22 and D that transmitted the acknowledgment ACK in the neighboring node column of the routing table 500 of the node P2.

The node P2 may receive the acknowledgment signal ACK and may select the next node on the main path and store it in the routing table 500. [ The node P2 determines whether the IP address of the acknowledgment signal ACK is the same as the IP address of the manager D. [ Since the manager D exists in the neighboring nodes B21, B22, and D of the node P2, the next node of the node P2 becomes the manager D. [

Referring to the routing table of FIG. 4B, the manager D is stored in the next node column of the routing table 500 of the node P2, the neighbor node B21 of the routing table 500 excluding the manager D, , B22) are stored.

The node P2 can once again send the routing request packet with the hop count value of 3 to the manager D to complete the main path construction.

When the manager D receives the routing request packet, the manager D confirms whether the routing IP address of the routing request packet exists in the routing table 600. If the sender IP does not exist in the routing table 600, the node P 2 is stored in the previous node column of the routing table 600. If the originator IP exists in the routing table 600, the hop count of the routing request packet is compared with the hop count of the existing hop count stored in the routing table 600. If the hop count of the routing request packet is smaller, The previous node column value of the table 600 is replaced with the node P2. For convenience of explanation, assuming that there is no existing main path, the manager D stores the node P2 in the previous node column of the routing table 600. [

Referring to FIG. 4B, the routing table 600 of the manager D can know that the node P2 is stored only in the previous node column.

5A to 8B, recovery path construction will be described. When the manager D receives the routing request packet, the manager D can start the recovery route construction.

Referring to FIG. 5A, the manager D can transmit a Route Reply (RREP) packet to the node P2 uni-casted.

Upon receiving the routing response packet, the node P2 broadcasts a BREQ (Bakcup Route Request) packet to a node stored in the neighbor node column of the routing table 500. [

The nodes B21 and B22 receiving the backup path setup request packet broadcast the received backup path setup request packet. When the manager D receives the backup route setup request packet, it transmits a BREP (Baking Route Reply) packet to the sender B21 of the backup route setup request packet in response to the backup route setup request packet. The node B21 having received the backup path setup response packet transmits the backup path setup response packet to the node P2.

Upon receiving the backup path setup response packet, the node P2 stores the node B2 in the recovery node column of the routing table 500. [ Referring to FIG. 5B, the stored value of the routing table 500 of the node P2 in which the main path and the recovery path have been established can be known.

Referring to FIG. 6A, upon receiving the backup path setup response packet, node P2 transmits a routing response packet to node P1, which is a previous node of node P2 on the primary path.

Upon receiving the routing response packet, the node P1 transmits a backup path setup request packet to the neighbor nodes B11, B12, and B13 stored in the neighbor node columns of the routing table 400. [ The nodes B11, B12, and B13 that have received the backup path setup request packet broadcast the backup path setup request packet. The node having the path from the node receiving the broadcasted backup path setup request packet to the manager D transmits a backup path setup response packet to the sender of the received backup path setup request packet. Since the path from the node B21 to the manager D as a neighbor node of the manager D is established, the node B21 transmits the backup path response packet to the node B11. The node B11 receives the backup path response packet and transmits the backup path response packet to the node P1.

Upon receiving the backup path response packet, the node P1 stores the node B11 in the recovery path column of the routing table 400. [

6B, in the routing table of the node P1, the agent (S) is stored in the previous node column, the node P2 is stored in the next node column, the node B11, the node B12 and the node B13 are stored in the neighbor node column, B11 is stored.

With reference to FIG. 7A, construction of a recovery path in the agent will be described.

Upon receiving the backup path response packet, the node P1 transmits the routing response packet to the agent S stored in the previous node column of the routing table 400. [

Upon receiving the routing response packet, the agent S transmits a backup route request packet to the neighbor nodes B11 and B12 stored in the neighbor node column of the routing table 300. [ The node B11 having the path from the neighbor nodes B11 and B12 to the manager D transmits a recovery path setting response packet to the agent S. [

Upon receiving the recovery path setup response packet, the agent S stores the sender node B11 of the recovery path setup response packet in the recovery path column of the routing table 300. [

Referring to FIG. 7B, node P1 is stored in the next node column of the routing table 300 of the agent S, nodes B11 and B12 are stored in the neighbor node column, and node B11 is stored in the recovery path column.

When the agent S receives the path setting response packet and the recovery path setting response packet, both the transmission path setting and the recovery path setting are completed.

Referring to FIG. 8A, a network diagram 150 of FIG. 8A illustrates a main path (solid line) and a recovery path (dotted line) constructed according to the routing path construction method of the present invention in a 6LoWPAN environment.

The main path is connected to the node P1 in the agent S, the node P2 in the node P1, and the manager D in the node P2.

The restoration path of the agent S is the node B11, the restoration node of the node P1 is the node B11, and the restoration node of the node P2 is B21.

8B is a routing table 300, 400, 500, 600 of each of the nodes S, P1, P2, and D existing on the main path constructed according to the routing path construction method of the present invention.

Referring to FIG. 9, a message flow of a routing construction method including a main path and a recovery path according to an embodiment of the present invention will be described.

The agent S transmits a route setting request message to the node P1 (S110). The routing request message is transmitted from the node P1 to the neighboring node B11 (S112). The neighboring node B11 transmits a response message to the node P1 (S114). The node P1 stores the neighboring node B11 in the neighboring node column of the routing table of the node P1 (S115). The node P1 transmits the route setting request message to the node P2 (S120).

The node P2 transmits the routing request message to the neighboring node B21 (S122). The neighboring node B21 transmits a response message to the node P2 (S124). The node P2 stores the node B21 in the neighbor node column of the routing table of the node P2 (S125). The node P2 transmits a route setting request message to the manager D (S127).

The manager D sends a routing response message to the node P2 (S130).

The node P2 transmits a backup path setup request message to the neighboring node B21 (S132). The node B21 transmits a backup path setup response message to the node P2 (S134). The node P2 stores the node B21 in the recovery node column of the routing table of the node P2 (S135). The node P2 transmits a routing response message to the node P1 (S140).

The node P1 sends a backup path setup request message to the neighboring node B11 (S142). The neighboring node B11 transmits a backup path setup response message to the node P1 (S144). The node P1 stores the node B11 in the recovery node column of the routing table of the node P1 (S145). The node P1 transmits a routing response message to the agent S (S150).

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

Network configuration diagram 100

Claims (13)

An agent according to the IEEE 11073 personal health device (PHD) requests a routing request packet for establishing a main path to a manager according to the IEEE 11073 PHD as an intermediate node ;
When the manager receives the routing request packet, transmitting a routing response packet to the agent via the intermediate node;
Establishing a recovery path from the intermediate node to the manager when the intermediate node receives the routing response packet;
The intermediate node sending the routing response packet to a previous node on the primary route; And
And when the agent receives the routing response packet, constructing a recovery path from the agent to the manager,
Wherein the agent, the intermediate node, the neighbor node, and the manager include a routing table storing path information of the main path and the recovery path,
The routing table includes a previous node column, a next node column, a neighbor node column, and a recovery node column,
Wherein the intermediate node establishing a recovery path comprises:
The intermediate node sending a recovery path setup packet to a neighbor node of the intermediate node;
When the neighbor node receives the recovery path configuration packet, if the path information to the manager is stored in the routing table of the neighbor node, the recovery path response packet is transmitted to the intermediate node, and path information to the manager is stored If not, transmitting the recovery path setup packet to a neighbor node of the neighbor node; And
When the intermediate node receives the recovery path response packet, storing the source node of the recovery path response packet in the recovery node column of the routing table of the intermediate node,
Wherein the neighboring node comprises a node at a one-hop distance from a particular node,
How to build routing for IEEE 11073 PHD devices based on 6LoWPAN (IPv6 Low Power Personal Area Network) The method according to claim 1,
Wherein the intermediate node comprises a node on the primary path excluding the agent and the manager,
6LoWPAN based IEEE 11073 PHD device routing establishment method. delete The method according to claim 1,
Wherein the transmitting the routing request packet via an intermediate node comprises:
Transmitting the routing request packet to a neighbor node of the intermediate node when the intermediate node receives the routing request packet; And
The intermediate node updating the routing table of the intermediate node,
6LoWPAN based IEEE 11073 PHD device routing establishment method. 5. The method of claim 4,
Wherein updating the routing table comprises:
Selecting one of the neighbor nodes of the intermediate node as a next node using a link quality indicator (LQI) and an energy level; And
And storing the next selected node in the next node column of the routing table of the intermediate node.
6LoWPAN based IEEE 11073 PHD device routing establishment method. delete The method according to claim 1,
Wherein the step of the agent establishing a recovery path comprises:
The agent sending a recovery path setup packet to a neighbor node of the agent;
When the neighbor node receives the recovery path setup packet, if the path information to the manager is stored in the routing table of the neighbor node, a recovery path response packet is transmitted to the agent, and path information to the manager is stored Transmitting the recovery path setup packet to a neighbor node of the neighbor node; And
And storing the originator node of the recovery path response packet in the recovery node column of the agent's routing table when the agent receives the recovery path response packet.
6LoWPAN based IEEE 11073 PHD device routing establishment method. A manager in accordance with IEEE 11073 PHD regulations;
An agent according to the IEEE 11073 PHD specification for establishing a primary path to the manager by transmitting a path setting request packet and establishing a recovery path to the manager upon receiving a path setting response packet; And
When the path setting request packet is received, transmits the path setting request packet until the main path is established and transmitted to the manager, and when the path setting request packet is received, a recovery path to the manager is established, And an intermediate node for transmitting a routing response packet to the agent,
Wherein the manager transmits the routing response packet to the intermediate node upon receiving the routing request packet from the intermediate node,
Wherein the agent, the intermediate node, the neighbor node, and the manager include a routing table storing path information of the main path and the recovery path,
The routing table includes a previous node column, a next node column, a neighbor node column, and a recovery node column,
Wherein the intermediate node comprises:
The method of claim 1, further comprising: transmitting a recovery path setup packet destined for the manager to a neighbor node of the intermediate node to establish the recovery path, and upon receiving a recovery path response packet from the neighbor node, In the recovery node column of the routing table of the intermediate node,
6 Routing construction system of IEEE 11073 PHD device based on. 9. The method of claim 8,
Wherein the agent, the intermediate node,
It belongs to 6LoWPAN based multi-hop wireless network and has IP address of IPv6 (Internet Protocol version 6)
6 Routing construction system of IEEE 11073 PHD device based on. delete 9. The method of claim 8,
Wherein the intermediate node comprises:
And transmits the routing request packet to a neighboring node of the intermediate node upon receiving a routing request packet to construct the main route, and transmits either one of neighbor nodes of the intermediate node to a link quality indicator (LQI) And selecting the next node based on the energy level and storing the next selected node in the next node column of the routing table of the intermediate node,
6LoWPAN based IEEE 11073 PHD device routing configuration system delete 9. The method of claim 8,
The agent,
The method of claim 1, further comprising: sending a recovery path setup packet destined for the manager to a neighbor node of the agent to establish the recovery path; receiving a recovery path response packet from the neighbor node, Stored in the recovery node column of the routing table,
6 Routing construction system of IEEE 11073 PHD device based on.

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