KR100712770B1 - Method for setting group address and ID of group address occupancy information message - Google Patents

Abstract

The present invention relates to a group address and ID setting method of a group address occupancy information message. For example, in a communication terminal such as an ultra wide band (UWB) device conforming to the WiNet (Wireless Net) standard, a connection is connected through a network. By setting the group address (GrpAddr) and the group ID (Group ID) of the Group Address Occupancy Information message transmitted and received between each communication terminal to be as mutually exclusive group address and group ID as possible, In the MAC layer of the same communication terminal, multicasting group address occupancy information message can be filtered more efficiently, thereby minimizing the filtering operation in the IP layer or the UDP layer of the communication terminal. Each device can significantly improve the availability and power efficiency of the processor. It will be useful inventions.

Communication terminal, UWB device, group address occupancy information (GAOI) message, group address, group ID, MAC layer, multicasting

Description

Method for setting group address and ID of group address occupancy information message}

1 illustrates an embodiment in which general UWB devices are connected and connected through a network,

2 illustrates a typical IPv4 address class,

3 illustrates a typical IPv4 Class D address and an Ethernet address,

4 illustrates an embodiment of a group address and ID of a group address occupancy information message according to the present invention;

5 illustrates an embodiment of a group address occupancy information message according to the present invention;

6 illustrates an embodiment of a group address occupancy information table stored and managed in a UWB device according to the present invention;

7 is a flowchart illustrating a method of setting a group address and ID of a group address occupancy information message according to the present invention.

※ Explanation of code for main part of drawing

100 to 400: UWB device 500: Network

The present invention relates to a group address and ID setting method of a group address occupancy information message. Group Address Occupancy Information The present invention relates to a group address and ID setting method of a message.

In general, as shown in FIG. 1, UWB devices 100 to 400 conforming to the WiNET standard are connected through a network 500 such as the Internet, and also IPv4 multi-cast. For example, the IPv4 addressing scheme uses a 32-bit long address as shown in FIG. 2, and the most significant 4 bits of the IPv4 address include a class D IP address. Since it is fixed as '1110', the remaining 28 bits are used as the actual valid space.

On the other hand, in an Ethernet network which is generally used, as shown in FIG. 3, a 48-bit Ethernet address is used, and the lower 23 bits of the class D IP address are the Ethernet address. In this case, 32 different multicast groups use the same Ethernet address by the highest 4 bits of the class D IP address and the remaining 5 bits except the lower 23 bits.

Accordingly, in the UWB device, filtering is performed at an IP layer or a User Datagram Protocol (UDP) layer, which is higher than the MAC layer, to check whether a message received by multicast over a network is actually a message to be received. Because of this, there is a problem that degrades the availability and power efficiency of the communication processor.

Accordingly, the present invention was created to solve the above problems, and for example, the group address (GrpAddr) of the Group Address Occupancy Information message transmitted and received between each communication terminal connected and connected through a network. By setting the group ID and the group ID as mutually exclusive group address and group ID, it is possible to more efficiently filter the multicast group address occupancy information message in the MAC layer of the communication terminal such as the UWB device. It is an object of the present invention to provide a method for setting a group address and ID of a group address occupancy information message.

The group address and ID setting method of the group address occupancy information message according to the present invention for achieving the above object, the group address and the group ID of the group address occupancy information (GAOI) message to be transmitted and received between the communication terminals to any value 1 step to assign; Generating the group address occupancy information (GAOI) message and exchanging with a plurality of communication terminals connected and connected through a network; And setting a group address and a group ID for each communication terminal through an interface with the communication terminals.

In the first step, the lower 8 bit values of the MBOA device address and the lower 24 bit values of the class D IP address are allocated to the group address and group ID of the group address occupancy information (GAOI) message. Generating a group address occupancy information (GAOI) message and exchanging the plurality of UWB devices connected through a network in a multicast manner;

In addition, in the step 3, the mutually exclusive group address and group ID are set through an interface with the communication terminals, and the group address and group ID set in each communication terminal are stored and managed in a table form, but the network If the group address and the group ID of the group address occupancy information (GAOI) message received through the table are stored in the storage management table, it is determined that the received group address occupancy information (GAOI) message is duplicated and ignored.

Further, if a group address of a group address occupancy information (GAOI) message received through the network is present in the table and a group ID of the group address occupancy information (GAOI) message is not present in the table, the group Associate the address with the group ID,

In addition, if the group address does not exist in the table, the unused group address is searched in the table to associate and set the group ID. Selecting a group address of a value to associate and set the group ID,

In addition, if the group address does not exist in the table and the unused group address is not found in the table, a group address having the smallest number of group IDs is selected, and the group ID is set in association. When a plurality of group addresses having the smallest number of group IDs are found, the group IDs having the smallest value are selected and the group IDs are linked.

Hereinafter, a preferred embodiment of a method for setting a group address and ID of a group address occupancy information message according to the present invention will be described in detail with reference to the accompanying drawings.

First, the present invention is applied to a communication terminal such as a UWB device or the like conforming to the WiNET standard. For example, in the UWB device, a group address (GrpAddr) and a group of a group address occupancy information (GAOI) message to be transmitted and received through a network. Group IDs are assigned to be as mutually exclusive as possible.

For example, as shown in FIG. 4, the lower 8-bit value of the MBOA device address DevAddr is assigned to the group address GrPAddr of the group address occupancy information (GAOI) message. In the device address DevAddr, the group address has a value in the range of [0xFF00, 0xFFFF], and '0xFFFF' is used as the broadcast address, so the group address GrPr of the group address occupancy information (GAOI) message is , [0xFF00, 0xFFFE].

Meanwhile, a lower 24 bit value of a 32 bit Class D IP address is assigned as a Group ID of a group address occupancy information (GAOI) message, and the highest 4 of the Class D IP addresses are assigned. Since the bit is fixed as '1110', the remaining 28 bits may be used as the identifier. In the present invention, only the lower 24 bit value of the 28 bits is used for the efficiency of the storage space.

The UWB device generates a group address occupancy information (GAOI) message including a group address and a group ID as described above, and then exchanges it with other UWB devices connected and connected through a network. After selecting and assigning a multicast group address, the first beacon period (BP) is used.

That is, a group address occupancy information (GAOI) message is exchanged during a beacon period in which a collision rarely occurs on a network. In this case, the GAOI message includes an element ID and a length (as shown in FIG. 5). Length (= N * 4)) and an information element (IE) composed of N group address occupancy information (GAOI [0] to [N-1]).

In addition, the GAOI message includes an element ID, an length (= N * 4 + 2), an application specific IE (ASIE) Specifier ID, and N group address occupancy information (GAOI [0] to 1). [N-1]) may be configured in an ASIE form.

Meanwhile, in all UWB devices connected and connected through the network, the GAOI table should be stored and managed to maintain the current state of use of the current multicast group address. As shown in FIG. 6, the GAOI table includes: A 24-bit group ID corresponding to an unused group address is filled with a value of '0'.

When the network application of the UWB device requests to be included in a specific IPv4 multicast group, the UWB device searches whether the item corresponding to the lower 24 bits of the requested IPv4 multicast address exists in the GAOI table, and matches the search result. If there is an item to be used, the group address used by the corresponding item is used as it is.

On the other hand, if there is no match, the GAOI table is searched sequentially to select and use the smallest group address among the unused group addresses. For example, as shown in FIG. 6, the group address of the smallest value among the unused group IDs, that is, the second group address in which the 24-bit group ID is filled with '0' is selected and used. It will be described in detail as follows.

7 is a flowchart illustrating a method of setting a group address and an ID of a group address occupancy information message according to the present invention. When a UWB device connected and connected through a network receives an arbitrary GAOI message, the GAOI message is displayed. In addition to checking the group address and the ID included in the search, the GAOI table is pre-stored and managed (S10).

In the search result, if the same group address and group ID already exist in the GAOI table (S11), it is determined that the GAOI message is a previously received GAOI message and is ignored (S12). If the same group address and group ID do not already exist, it is determined whether only the same group address exists in the GAOI table (S13). For example, if the same address does not exist in the GAOI table, After allocating the requested group ID, the record is managed in the GAOI table (S14).

On the other hand, if the same ID does not exist in the GAOI table, the unused group address is searched for (S15). If the unused group address is searched (S16), at the smallest group address, After allocating the group ID, recording is managed in the GAOI table (S17).

If the unused group address is not found, the group address having the smallest number of group IDs assigned to the GAOI table is searched (S18), and the group ID is assigned to the group address having the smallest value. After allocating, recording management is performed in the GAOI table (S19).

As a result, a group address (GrpAddr) and a group ID (Group ID) for each UWB device can be set as a mutually exclusive group address and group ID, so that each UWB device is multicasted over a network. In the MAC layer, it is possible to filter more efficiently whether a GAOI message is a GAOI message that it should actually receive.

Or more, preferred embodiments of the present invention described above, for the purpose of illustration, those skilled in the art, within the technical spirit and the technical scope of the present invention disclosed in the appended claims below, to further improve various other embodiments Changes, substitutions or additions will be possible.

The group address and ID setting method of the group address occupancy information message according to the present invention constituted and constructed as described above is, for example, between communication terminals connected and connected through a network in a communication terminal such as a UWB device conforming to the WiNET standard. In the MAC layer of a communication terminal such as a UWB device, by setting the group address (GrpAddr) and the group ID (Group ID) of the group address occupancy information (GAOI) message transmitted and received to the maximum as mutually exclusive group address and group ID, The multicasting group address occupancy information message can be filtered more efficiently, thereby minimizing the filtering operation at the IP layer or the UDP layer of the communication terminal, thereby greatly improving the availability and power efficiency of the communication processor. It is a very useful invention.

Claims (10)

Allocating a group address and a group ID of a group address occupancy information (GAOI) message to be transmitted and received between communication terminals to arbitrary values; Generating a group address occupancy information (GAOI) message and exchanging a plurality of communication terminals connected through a network in a multicast manner; And And three steps of setting mutually exclusive group addresses and group IDs through an interface with the communication terminals, and storing and managing the group addresses and group IDs set in the respective communication terminals in a table form. Group address occupancy information message group address and ID setting method. The method of claim 1, In the first step, the lower 8 bit values of the MBOA device address and the lower 24 bit values of the class D IP address are allocated to the group address and group ID of the group address occupancy information (GAOI) message. How to set group address and ID of information message. The method of claim 1, In the step 2, the group address and eye group information of the group address occupancy information message may be generated and exchanged in a multicast manner with a plurality of UWB devices connected and connected through a network. D How to set. delete The method of claim 1, In step 3, if the group address and the group ID of the group address occupancy information (GAOI) message received through the network are present in the storage management table, it is determined that the received group address occupancy information (GAOI) message is duplicated. And then ignores the group address occupancy information message. The method of claim 1, In step 3, if the group address of the group address occupancy information (GAOI) message received through the network is present in the table and the group ID of the group address occupancy information (GAOI) message is not present in the table, And a group address and ID setting method of the group address occupancy information message, wherein the group address and the group ID are set in association. The method of claim 1, In step 3, if a group address of a group address occupancy information (GAOI) message received through the network does not exist in the table, the group ID is searched for an unused group address in the table, and the group ID is linked. And a group address and ID setting method of the group address occupancy information message. The method of claim 7, wherein And if a plurality of unused group addresses are found in the table, selecting the smallest group address and associating and setting the group IDs. The method of claim 1, In step 3, if the group address of the group address occupancy information (GAOI) message received through the network does not exist in the table and the unused group address is not found in the table, the number of group IDs is set. And selecting a group address having the least number and linking the group IDs. The method of claim 9, When a plurality of group addresses having the smallest number of group IDs are searched for, a group address of a group address occupancy information message is selected by selecting a group address having the smallest value and linking the group IDs. .

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