WO2006025265A1 - 通信装置 - Google Patents
通信装置 Download PDFInfo
- Publication number
- WO2006025265A1 WO2006025265A1 PCT/JP2005/015502 JP2005015502W WO2006025265A1 WO 2006025265 A1 WO2006025265 A1 WO 2006025265A1 JP 2005015502 W JP2005015502 W JP 2005015502W WO 2006025265 A1 WO2006025265 A1 WO 2006025265A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- data
- unit
- header
- memory
- communication
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/60—Router architectures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
Definitions
- the present invention relates to a communication apparatus that can be used for forming a relay node in a communication network that enables communication between a plurality of communication terminals, for example.
- a mesh 'network is different from a communication network constructed by arranging a base node that performs a central management function and a plurality of relay nodes under its control, as a base node that performs a central management function.
- a number of relay nodes with no corresponding ones are arranged adjacent to each other in such a way that their communication areas overlap each other, thereby expanding the communication path into a network. It is a communication network.
- a mesh network for example, even if a certain relay node fails and communication is interrupted, communication via other relay nodes can be quickly recovered. Furthermore, there are advantages such as easy addition of a new relay node to the network.
- each of a plurality of relay nodes constructing a wireless mesh network can be used to increase the amount of information processing within a certain time in the network. It shall be equipped with a directional antenna system, and by selecting the antenna directivity set by the directional antenna system at the relay node according to the wireless communication between the relay nodes, the communication efficiency in the network should be improved.
- You Rukoto also include (e.g., see Patent Document 2.) 0
- Patent Document 1 U.S. Pat.No. 6,480,497
- Patent Document 2 U.S. Pat.No. 6,640,087
- the disadvantages are also recognized.
- information on the communication route until the transmission source power in the mesh' network reaches the destination that is, route information is frequently transferred. Therefore, there is a problem that the communication efficiency is lowered due to an increase in traffic other than the original traffic according to the original communication information.
- network control information such as the position of each relay node and the link status with other relay nodes between relay nodes becomes more frequent. Therefore, there is a problem that the amount of data regarding network control information increases and the network becomes unstable.
- the mesh 'network is composed of multiple relay nodes, the above-mentioned problems will eventually be fulfilled by each of the multiple relay nodes constructing the mesh' network. As a result, it will be brought about by the function that it has.
- the present invention has advantages over the advantages of the mesh network, and in addition to that, the original communication information is used to mimic the increase in traffic other than traffic.
- Each of the multiple relay nodes that can construct a new communication network without the problem of a decrease in communication efficiency and the problem that the network becomes unstable due to an increase in the amount of network control information data.
- a communication device that can be used to form a network is provided.
- the communication device includes: a reception input unit that receives an incoming communication signal and obtains an input information signal; Frame header area where identification information based on the input information signal is arranged and information where communication information is arranged.
- the framed data composing the frame including the information area is stored in the first memory means as the additional header area added to the frame, and stored in the first memory means.
- the information of the additional header area and the frame header area included in the framed data is extracted as header data and sent to the data transmission path, and the header data sent to the data transmission path is sent to the second
- the header data storage unit that stores the header data stored in the second memory unit and stores the header data extracted from the header data storage unit as the history data according to circumstances, is stored as the third data.
- the second memory means controls the operation of the history data storage part, the header data storage part and the history data storage part stored in the memory means of the second memory means.
- the header data retrieved from the memory and the history data stored in the third memory means are compared, and the header data stored in the second memory means is processed according to the comparison result.
- the first management unit that transmits the processed header data to the framed data processing unit through the data transmission path and the operation of the framed data processing unit are controlled and transmitted to the framed data processing unit.
- the identification information of the frame header area included in the framed data stored in the first memory means is changed, and the framed data after the change is subjected to frame decomposition.
- a second management unit that sets a state where an output information signal is obtained, and an output transmission unit that transmits an output communication signal based on the output information signal.
- each of the first, second and third memory means is constituted by a ring buffer.
- the framed data force formed based on the incoming communication signal is configured by, for example, a ring buffer in the framed data processing unit.
- the first memory means Stored in the first memory means.
- the header data included in the framed data stored in the first memory means is taken out and transmitted through the data transmission path, for example, in the header data storage unit.
- the first management unit records the header data stored in the second memory means and the history data stored in the third memory means constituted by, for example, a ring buffer. The data is compared with the data and stored in the third memory means as history data according to the header data stored in the second memory means.
- the first management unit performs processing according to the result of comparison with the history data on the header data stored in the second memory means to obtain processed header data. It is transmitted through the data transmission path and transmitted to the framed data processing unit.
- a change is made according to the data, an output information signal is obtained based on the framed data with the change, and an output communication signal based on the output information signal is transmitted.
- the identification information arranged in the frame header area included in the framed data includes the transmission source and destination of the incoming communication signal, and the communication device that passes immediately before arrival. Is included.
- the output communication signal to be transmitted changes the identification information included in the incoming communication signal according to the information represented by the history data stored in the third memory means in the history data storage unit. Identification information.
- the incoming communication signal is received, and the history data stored in advance regarding the identification information included accompanying the communication information is received. And an output communication signal including the changed identification information in addition to the communication information is formed based on the incoming communication signal, and the output communication is performed.
- a signal is transmitted. Therefore, by arranging a plurality of communication apparatuses according to the present invention so that adjacent ones form a communication link, a communication network using them as relay nodes can be formed. That is, the communication device according to the present invention can be used for forming each of a plurality of relay nodes forming a communication network.
- each relay node has a plurality of others. Even if a failure occurs in one relay node, communication can be continued via another relay node without interrupting communication.
- there are advantages over the advantages of mesh 'networks, such as adding new relay nodes to the network is significantly easier.
- route information that is information about a communication route from a communication signal source to a destination is not frequently transferred between a plurality of relay nodes. As a result, the original communication information does not cause a problem that the increase in traffic other than the previous traffic is imitated and the communication efficiency decreases.
- the communication device has an advantage that exceeds the advantage of the mesh network, and in addition to that, the communication efficiency is increased by imitating an increase in traffic other than traffic for the original communication information.
- Multiple relay nodes that can construct a new communication network without the problem of degradation of the network, and the problem that the network becomes unstable due to an increase in the amount of network control information. It can be used for the formation of each.
- FIG. 1 is a conceptual diagram showing an example of a communication network constructed by a plurality of relay nodes formed by applying an example of a communication apparatus according to the present invention.
- FIG. 2 is a block configuration diagram showing an example of a communication apparatus according to the present invention.
- FIG. 3 is a conceptual diagram schematically showing basic elements of operations performed in the example of the communication apparatus shown in FIG. 2.
- FIG. 4 is a block configuration diagram showing a specific configuration example of an interface unit in the example of the communication apparatus shown in FIG.
- FIG. 5 is a format diagram showing an example of a data format representing a configuration of framed data and header data formed in the example of the communication apparatus shown in FIG. 6 is a block configuration diagram illustrating a specific configuration example of a core unit in the example of the communication device illustrated in FIG.
- FIG. 1 shows an example of a communication network constructed by connecting a plurality of relay nodes, which is an application example of an example of a communication apparatus according to the present invention.
- a plurality of relay nodes 1 la ⁇ : L li each of which is indicated as "BASE", can communicate with each other adjacent to each other.
- the areas are arranged so that they overlap each other. Communication between the two forces connected by the solid arrows in the relay nodes 1 la to l li is performed.
- Each of the relay nodes 11a to 11: Lli includes a history database HDB formed by storing history data related to the incoming communication signal in the memory means (the history database will be described later). ).
- Each of the relay nodes lla to lli or a part of the relay nodes lla to lli includes one or a plurality of communication terminals such as a mobile phone and a personal computer. Power is registered as belonging to it. Each communication terminal is specified by its unique identification information.
- the communication terminal TE1 is transmitted from the transmission terminal TE1.
- a communication signal with the communication terminal TE2 as a destination is transmitted from the communication terminal TE1, for example, relay node lla ⁇ relay node llb ⁇ relay node lle ⁇ relay node llf ⁇ relay node lli It is transmitted to the communication terminal TE2 through the route.
- the incoming communication signal is processed by referring to the history data stored in the history database HDB with various identification information included therein. Then, it is sent to another relay node or communication terminal, and the communication signal is relayed.
- FIG. 2 shows an example of a communication apparatus according to the present invention that can form each of the relay nodes l la to l li shown in FIG.
- the example shown in FIG. 2 is configured to be interconnected through an interface unit 12, a core unit 13, a force main bus 14, and a system bus 15.
- the reception input unit 21 receives communication signals SCl to SCn (n is a positive integer) that also receives external force, and input information signals SIl to SCn corresponding to the communication signals SCl to SCn, respectively.
- SIn is obtained and supplied to the analog Z digital (AZD) conversion 'selection unit 22.
- the AZD conversion 'selection unit 22 performs AZD conversion processing by the built-in AZD conversion means on each of the input information signals SI1 to SIn to obtain n input information digital signals, and outputs one of them. Select it, send it as input digital data DD, and supply it to the media access control (MAC) unit 23.
- MAC media access control
- the input digital data DD from the AZD conversion / selection unit 22 is supplied to a frame decomposition (frame) processing (SAR) unit 24 that performs frame decomposition processing and frame processing on the data. Is done.
- the SAR unit 24 performs framing processing on the input digital data DD, and generates the framed data DF constituting the frame including the frame header region and the subsequent information region from the input information obtained from the reception input unit 21.
- the information signal SIl to SIn is formed based on a selected one and is supplied to the framed data processing unit 25.
- Various kinds of identification information such as identification information representing the relay node that has passed are arranged, and communication information transmitted by a selected one of the input information signals SIl to SIn is arranged in the information area .
- the framed data processing unit 25 operates based on centralized management and operation control by the MAC management unit 26, and stores the framed data DF obtained from the SAR unit 24 in a built-in memory unit with a predetermined address.
- the Base header area is added to the frame formed by the framed data DF, for example, as an additional header area preceding the frame header area.
- Base information such as time information indicating the time when the framed data DF arrived at the framed data processing unit 25 and number of times information indicating the number of arrivals of the framed data DF are arranged in the Base header area.
- the framed data DF stored in the memory means built in the framed data processing unit 25 is unnecessary for the relay node including the MAC unit 23 to which the framed data processing unit 25 belongs.
- the MAC management unit 26 makes a determination to that effect. For the framed data DF judged to be unnecessary by the MAC management unit 26, a sending flag indicating that it should be sent to other relay nodes as it is in the Base header area of the frame formed by it. Is granted. Then, the framed data processing unit 25 removes the additional header region from the framed data DF that is determined to be sent to the other relay node as it is by the MAC management unit 26.
- the framed data processing unit 25 discards the Base header area in the frame formed by the framed data DF determined to be unnecessary by the MAC management unit 26.
- the SAR unit 24 that has received the transmission framed data DFT from the framed data processing unit 25 performs frame decomposition processing on the transmission framed data DFT, and transmits the transmission frame data DFT.
- the framing data DFT is decomposed to obtain output digital data DDT, which is supplied to the selected 'digital' analog (DZA) converter 27.
- Selection 'DZA conversion unit 27 selects one of a plurality of built-in DZA conversion means, performs DZA conversion processing by the selected DZA conversion means on the output digital data DDT, and outputs the output information signals S01 to SOn. Either one is obtained and supplied to the output transmitter 28.
- the output transmission unit 28 transmits any of the output communication signals SNl to SNn based on any of the output information signals S01 to SOn. In such a case, the input information signals SIl to SIn obtained by receiving the input communication signals SCl to SCn are selected. The core unit 13 is not involved. A bypass transmission operation is performed in which any one of the information signals S01 to SOn is transmitted to another relay node in the form of any one of the input communication signals SN1 to SNn.
- the AZD conversion 'selection unit 22 selects one of the n input information digital signals based on each of the input information signals SIl to SIn as the input digital data DD. And, the selection of one of the plurality of built-in DZA conversion means by the DZA conversion unit 27 is performed according to the operation control by the MAC management unit 26 in the MAC unit 23.
- the framed data DF force stored in the memory means built in the framed data processing unit 25 is necessary for the relay node including the MAC unit 23 to which the framed data processing unit 25 belongs. If so, the MAC management unit 26 makes a determination to that effect. Then, the framed data processing unit 25 copies and extracts the Base header area and the frame header area included in the framed data DF determined to be necessary by the MAC management unit 26, and configures a frame including them.
- the header data DH is formed and sent to the main bus 14 so that the header data DH is transferred from the interface unit 12 to the core unit 13 through the main node 14.
- the core unit 13 includes a core management unit 31, a header data storage unit 32, and a history data storage unit 33.
- the core management unit 31 performs operation control by the central control unit 34 and the central control unit 34. It includes a data processing unit 35 for receiving.
- the data processing unit 35, the header data storage unit 32, and the history data storage unit 33 in the core management unit 31 are connected to the system bus 15.
- the header data storage unit 32 and the history data storage unit 33 operate under centralized management and operation control by the core management unit 31.
- the data processing unit 35 and the header data storage unit 32 in the core management unit 31 are connected to the 1S main bus 14, respectively.
- the core unit 13 is supplied to the header data DH force header data storage unit 32 that constitutes a frame composed of the Base header area and the frame header area that arrives through the main bus 14, and the core management According to the operation control by the unit 31, the data is stored in the memory means built in the header data storage unit 32 with a predetermined address.
- the header data DH stored in the memory means built in the header data storage unit 32 follows the operation control by the core management unit 31, and according to circumstances, the memory built in the header data storage unit 32
- the means power is also read out and supplied to the history data storage unit 33 through the system nos 15.
- a history database is constructed in which header data that has arrived at the core unit 13 in the past is stored in the memory means as history data.
- the history data storage unit 33 uses the header data DH extracted from the header data storage unit 32 and supplied to the history data storage unit 33 as history data according to circumstances. Store the history database in the memory means to build the history database.
- the data processing unit 35 is stored in the header data storage unit 32 in the header means DH
- the history data storage unit 33 compares the history data stored in the memory means for constructing the history database. Then, the data processing unit 35 is formed from the communication device in which the data processing unit 35 is arranged, for example, the transmission source of the original input information signal from which the header data DH is obtained from the comparison result. Whether the communication node belongs to this relay node or not, the transmission destination of the original input information signal from which the header data DH is obtained is formed by the communication device in which the data processing unit 35 is arranged.
- the communication terminal belongs to the relay node, and whether or not the original input information signal that resulted in obtaining the header data DH has arrived at the communication device in which the data processing unit 35 is arranged in the past. And so on. Furthermore, the data processing unit 35 The flag processing is performed to add a flag corresponding to the result to the header data DH, and the header data DH after the flag processing is transferred to the framed data processing unit 25 in the MAC unit 23 of the interface unit 12 through the main bus 14.
- the framed data processing unit 25 supplied with the flag-processed header data DH from the core unit 13 is a memory built in the framed data processing unit 25 under the operation control by the MAC management unit 26.
- the identification information of the frame header area included in the frame formed by the framed data DF stored in the means can be added or modified according to the flag assigned to the flag processed header data DH. .
- the framed data processing unit 25 receives a framed data DF that forms a frame composed of a frame header area in which the changed identification information is arranged and a subsequent information area from the built-in memory means. Is sent to the SAR unit 24 as frame data DFT for transmission.
- the framed data processing unit 25 discards the Base header area of the frame left in the memory means in the framed data processing unit 25 as related to the framed data DF.
- the transmission framed data DFT obtained from the framed data processing unit 25 in this way is also subjected to frame decomposition processing by the SAR unit 24 to obtain output digital data DDT, and the output digital data
- the DDT is selected by the DZA conversion unit 27 to be set to one of the output information signals S01 to SOn and supplied to the output transmission unit 28. Then, the output transmitter 28 transmits any power of the output communication signals SNl to SNn based on any of the output information signals S01 to SOn.
- the interface unit 12 receives a communication signal coming from the outside, and reproduces an input information signal corresponding to the received communication signal.
- the reproduced input information signal is framed, and framed data is formed and stored in the memory means, and additional header information is added.
- the header data from the interface unit 12 and the history data stored in the history database constructed in the core unit 13 are compared, and a flag corresponding to the comparison result is compared.
- the header processing is applied to the header data, and the header data that has been subjected to the header processing is sent back from the core unit 13 to the interface unit 12.
- the identification information in the framed data stored in the memory means of the interface unit 12 is changed according to the flag given to the header data that has undergone the header processing.
- the interface unit 12 performs frame decomposition processing on the framed data whose identification information has been changed to form an output information signal, and an output communication signal based on the output information signal is transmitted.
- each relay node In the case where a plurality of relay nodes formed by the example of the communication device shown in FIG. 2 as described above are arranged, and those adjacent to each other are placed in an interconnected state, for example, as shown in FIG.
- a communication network including relay nodes l la to l li is configured.
- each relay node usually transmits a communication signal to a plurality of other relay nodes or communication terminals, and even if a failure occurs in a certain relay node, communication is possible. Communication can be continued via other relay nodes without interruption, and it becomes extremely easy to add new relay nodes to the network.
- the communication path between the plurality of relay nodes and the communication path to reach the transmission source and destination of the communication signal is the information that is the previous information. Since information is not frequently transferred, there is no problem that communication efficiency is reduced due to an increase in traffic other than traffic for original communication information.
- Network control information such as the position of each relay node and the link status with other relay nodes is not frequently transmitted and received, resulting in an increase in the amount of data about network control information and unstable network There is no problem of becoming.
- FIG. 4 shows a specific configuration example of the interface unit 12 shown in FIG.
- communication signals such as the above-described communication signals SCl to SCn coming from the outside are supplied to the high-frequency amplifier 42 through the reception antenna 41.
- the communication signal amplified by the high frequency amplifier 42 passes through the band pass filters (BPF) 43a to 43n corresponding to the respective carrier frequencies, and is supplied to the receivers 44a to 44n.
- BPF band pass filters
- frequency conversion processing, level adjustment processing, demodulation processing, and the like are performed on the communication signal through the BPF 43a to 43n, and the input information signal based on the communication signal is reproduced. Therefore, the reception antenna 41, the high frequency amplification unit 42, the BPFs 43a to 43n, and the reception units 44a to 44n form the reception input unit 21 shown in FIG.
- Input information signals obtained from the receivers 44a to 44n are supplied to the AZD converters 45a to 45n.
- the input information signal is digitized by performing the AZD conversion process on the input information signal from the reception units 44a to 44n, and the input information digital signal is formed. This is supplied to the selector 46. That is, the / D conversion units 45a to 45n form digital signal generation units that form input information digital signals based on the input information signals from the reception units 44a to 44n.
- the selection unit 46 selects one of the input information digital signals from the AZD conversion units 45a to 45n under the operation control by the selection control unit 47 controlled by the MAC management unit 26 in the MAC unit 23.
- input digital data DD is supplied to the memory unit 48 as input digital data based on a selected one of the input information signals obtained from the receiving units 44a to 44n, such as the input digital data DD.
- the input digital data is written and read under the control of the MAC management unit 26 in the MAC unit 23, and the input digital data force from the memory unit 48 is the SAR in the MAC unit 23. Supplied to part 24.
- the AZD conversion units 45a to 45n, the selection unit 46, the selection control unit 47, and the memory unit 48 may form the AZD conversion / selection unit 22 shown in FIG. [0045]
- the framing processing by the framing processing unit 49 built in the SAR unit 24 is performed on the input digital data from the memory unit 48, for example, As shown in Fig. 5A, the framed data force that composes the frame including the frame header area and the subsequent information area. And is supplied to the framing data processing unit 25.
- the framed data power of the SAR unit 24 is also stored in the framed data power MAC memory unit 50 from which the power is obtained.
- the MAC memory unit 50 is configured by, for example, a ring buffer, and data storage and retrieval from the data storage unit is a data processing unit that is controlled by the MAC management unit 26, respectively. 51, data transfer unit 52, data discard unit 53, data fetch unit 54, and data transmission control unit 55.
- the transmission source and transmission of the selected one of the input information signals obtained from the reception units 44a to 44n are arranged, and communication information transmitted by a selected one of the input information signals is arranged in the information area.
- a frame formed by the framed data stored in the MAC memory unit 50 by the data processing unit 51 includes a Base header area power, for example, a frame It is added as an additional header area preceding the header area.
- Base information such as time information indicating the time when the framed data arrives at the framed data processing unit 25 and number information indicating the number of arrivals of the framed data is arranged in the Base header area.
- the framed data stored in the MAC memory unit 50 constitutes a frame formed including a Base header area, a frame header area, and an information area, for example, as shown in B of FIG. It is supposed to be.
- the relay node including the framed data force MAC unit 23 stored in the MAC memory unit 50 is used. If it is not necessary for the For example, it is performed by the MAC management unit 26 that has obtained information through the data processing unit 51. For framed data judged unnecessary by the MAC management unit 26, a transmission flag indicating that it should be sent as it is to another relay node in the Base header area of the frame formed by it. Force is given by the data processing unit 51. Then, the data transmission control unit 55 extracts the frame header area and the subsequent information area from the MAC memory unit 50 excluding the additional header area in the framed data to which the transmission flag is added, and extracts them. Is sent to the SAR unit 24 as framing data for transmission that constitutes a frame including the. The data discard unit 53 discards the additional header area in the frame formed by the framed data that has been formed and transmitted to the SAR unit 24.
- the frame decomposition processing by the frame decomposition processing unit 56 incorporated in the SAR unit 24 is performed on the transmission framed data.
- output digital data based on the framed data for transmission is obtained, which is transmitted from the MAC unit 23 and supplied to the memory unit 57.
- output digital data is written and read under the control of the MAC management unit 26 in the MAC unit 23, and the output digital data from the memory unit 57 is sent to the selection unit 58. Supplied.
- the selection unit 58 selects one of the DZA conversion units 59a to 59n under the operation control by the selection control unit 47 controlled by the MAC management unit 26 in the MAC unit 23, and the memory unit 57
- the output digital data from is supplied to the selected one of the DZA converters 59a to 59n.
- the output digital data is converted into an analog signal by performing DZA conversion processing on the output digital data, and an output information signal based on the output digital data is formed. It is supplied to the transmitter 60a to 60n corresponding to the selected one of the DZA converters 59a to 59n.
- the DZA converters 59a to 59n form an analog signal generator that obtains an output information signal based on the output digital data from the selector 58.
- the memory unit 57 and the selection unit 58 form the selection DZA conversion unit 27 shown in FIG. [0052]
- modulation processing using the output information signal as a modulation signal, frequency band adjustment for the modulation output obtained by the modulation processing, and the like are performed.
- An output communication signal is formed.
- the output communication signal is adjusted so that the level does not exceed a predetermined level by the level adjustment unit 62 through the addition unit 61 and, for example, as any of the output communication signals SNl to SNn, It is transmitted through the transmitting antenna 63. Accordingly, the transmission units 60a to 60n, the addition unit 61, the level adjustment unit 62, and the transmission antenna 63 form the output transmission unit 28 shown in FIG.
- the framed data power MAC management unit 26 stored in the MAC memory unit 50 determines that it is necessary for the relay node including the MAC unit 23, the framed data processing unit 25 Then, by the data transfer unit 52, various identification information of the Base header area and the frame header area included in the framed data is also copied and taken out, and an address C pointer area is added to it, for example, As shown in FIG. 5C, header data constituting a frame including the Base header area and the frame header area is formed, which is derived from the framed data processing unit 25 and is transmitted from the interface unit 12 to the main bus. 14 is transferred to the core unit 13 through 14. As described above, the header data transferred from the interface unit 12 to the core unit 13 does not include the information area in the frame formed by the framed data stored in the MAC memory unit 50, and includes the Base header area and the frame. It is assumed that only the header area is included.
- the data fetch unit 54 causes the flag data to be processed. Is taken into the MAC memory unit 50. Subsequently, the flag added to the header data subjected to the flag processing in the identification information of the frame header area included in the framed data constituting the frame as shown in B of FIG. 5 stored in the MAC memory unit 50. Changes such as additions and corrections will be made according to. Then, in the framed data processing unit 25, the data transmission control unit 55 sends a frame header area in which the changed identification information is arranged from the MAC memory unit 50, and a frame composed of the following information area.
- the framed data that forms the frame is extracted, and it is the framed data for transmission. Then, it is transmitted from the framed data processing unit 25 to the SAR unit 24.
- the used additional header area and flag processed header data remaining in the MAC memory unit 50 are discarded by the data discard unit 53 in the framed data processing unit 25.
- the frame decomposition processing by the frame decomposition processing unit 56 built in the SAR unit 24 is also performed on the transmission framed data transmitted from the framed data processing unit 25 to the SAR unit 24 in this way.
- output digital data based on the framing data for transmission is obtained, written into the memory unit 57, read out from the memory unit 57, and supplied to the selection unit 58.
- the selection unit 58 supplies the selected DZA conversion unit 59a to 59n to one of the selected DZA conversion units 59a to 59n, and the selected one of the DZA conversion units 59a to 59n outputs based on the output digital data.
- An information signal is formed and supplied to the transmitter 60a-60n corresponding to the selected one of the DZA converters 59a-59n.
- FIG. 6 shows a specific configuration example of the core unit 13 shown in FIG.
- the MAC data 23 in the interface unit 12 is also transmitted through the main bus 14.
- the header data connected to the history data storage unit 33 through the system bus 15. Supplied to storage 32.
- the header data storage unit 32 writes and writes data to the header data memory unit 71 under the operation control of the header data memory unit 71 used for storing header data and the data processing unit 35 in the core management unit 31. It includes a header data memory control unit 72 that performs read control, and a snapshot memory unit 73 that serves as a temporary backup for data handled by the header data memory unit 71.
- the header data memory unit 71 is composed of, for example, a ring buffer.
- the history data storage unit 33 includes a history data memory unit 74 used for temporary storage of history data, a history data storage memory unit 75 that stores history data and constructs a history database, and a core management unit.
- the control unit 31 includes a history data memory control unit 76 that controls writing and reading of data to and from the history data memory unit 74 and the history data storage memory unit 75 under the operation control of the data processing unit 35 in the processing unit 31.
- the history data memory unit 74 and the history data storage memory unit 75 are also configured by, for example, a ring buffer.
- the header data stored in the header data memory unit 71 constitutes a frame consisting of a Base header area and a frame header area as shown in FIG. 5C, for example.
- the header data stored in the header data memory unit 71 is, depending on the case, under the operation control by the data processing unit 35 in the frame header area force core management unit 31 in the header data memory unit 71.
- the data is read from the header data memory unit 71 to form history data, temporarily stored in the history data memory unit 74 through the system bus 15, and then stored in the history data storage memory unit 75. Added to the database.
- the data processing unit 35 in the core management unit 31 includes a data fetch unit 81, a data comparison unit 82, a data transfer unit 83, and a data storage unit 84 that are coupled to both the power main bus 14 and the system bus 15, respectively. And the data discarding unit 85, and the whole is under the operation control by the central control unit 34.
- the data take-in unit 81 is connected to the header data memory control unit 72 in the header data storage unit 32 and the header data memory of the header data that reaches the header data storage unit 32 through the main bus 14 from the MAC unit 23 in the interface unit 12.
- the state in which the header data is stored in the header data memory unit 71 is set by writing to the unit 71.
- the data comparison unit 82 compares the header data stored in the header data memory unit 71 of the header data storage unit 32 with the history data stored in the history data storage memory unit 75 of the history data storage unit 33. To do. Then, the data comparison unit 82 determines, for example, the header data in the interface unit 12 from the result of the comparison between the header data and the history data.
- the transmission source of the original input information signal that has been obtained is a communication terminal belonging to a relay node formed by the communication apparatus having the interface unit 12
- the destination of the original input information signal that resulted in the data being obtained is a power terminal that is a communication terminal belonging to a relay node formed by a communication device equipped with the interface unit 12, and the interface unit 12 Judgment is made regarding the header data, such as whether the original input information signal that resulted in obtaining the header data in the past has arrived at the communication device having the interface unit 12 in the past.
- the data comparison unit 82 performs a flag process for adding a flag corresponding to the determination result regarding the header data to the header data stored in the header data memory unit 71.
- the data transfer unit 83 reads from the header data memory unit 71 the flag-processed header data obtained by performing the flag processing by the data comparison unit 82 to the header data memory control unit 72 in the header data storage unit 32.
- the flag processed header data that has been read out is transferred to the framed data processing unit 25 in the MAC unit 23 of the interface unit 12 through the main bus 14.
- the data storage unit 84 compares the header data stored in the header data memory unit 71 of the header data storage unit 32 with the history data stored in the history data storage memory unit 75 of the history data storage unit 33. To do. Subsequently, based on the comparison result, the data storage unit 84 stores the header data stored in the header data memory unit 71 in the history data storage memory unit 75 in the history data storage unit 33 as new history data. Determine whether or not the power has a frame header area.
- the header data stored in the header data memory unit 71 has a frame header area to be stored in the history data storage memory unit 75 as new history data.
- the unit 84 causes the header data memory control unit 72 in the header data storage unit 32 to read out and read the Base header area and the frame header area in the header data stored in the header data memory unit 71 from the header data memory unit 71.
- the data forming the frame composed of the base header area and the frame header area is sent to the history data storage unit 33 through the system bus 15.
- data protection The storage section 84 is a frame composed of a Base header area and a frame header area, as shown in FIG. 5D, sent to the history data memory control section 76 in the history data storage section 33 and sent to the history data storage section 33.
- the history data memory unit 74 is written and stored, and the history data memory control unit 76 then causes the frame header in the frame formed by the data written to the history data memory unit 74 to be stored.
- the area is stored in the history data storage memory unit 75 as history data. Thereby, for example, as shown in E of FIG. 5, the history data is saved in the history data storage memory unit 75 as new history data of the frame header area, and the history database is expanded.
- the data discard unit 85 discards various types of used data in the core unit 13, such as used data and unnecessary data in the header data storage unit 32.
- the communication device according to the present invention as described above has an advantage that exceeds the advantages of the conventional mesh network, and in addition, an increase in traffic other than traffic for the original communication information is imitated.
- the new U and the communication network will not be accompanied by the problem that the communication efficiency will be reduced by this, and the problem that the network will become unstable due to the increase in the data amount of network control information. It can be widely applied to communication networks as it can be used to form multiple relay nodes that can be constructed.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Mobile Radio Communication Systems (AREA)
- Small-Scale Networks (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05780841A EP1786150A4 (en) | 2004-09-02 | 2005-08-26 | COMMUNICATION DEVICE |
US11/660,305 US7715399B2 (en) | 2004-09-02 | 2005-08-26 | Communication apparatus constituting a relay mode in a communications network |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004255082A JP3795902B2 (ja) | 2004-09-02 | 2004-09-02 | 通信装置 |
JP2004-255082 | 2004-09-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006025265A1 true WO2006025265A1 (ja) | 2006-03-09 |
Family
ID=35999921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/015502 WO2006025265A1 (ja) | 2004-09-02 | 2005-08-26 | 通信装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7715399B2 (ja) |
EP (1) | EP1786150A4 (ja) |
JP (1) | JP3795902B2 (ja) |
WO (1) | WO2006025265A1 (ja) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01291553A (ja) * | 1988-05-18 | 1989-11-24 | Fujitsu Ltd | メッシュネットワークにおける個別通信方式 |
JPH04368034A (ja) * | 1991-06-17 | 1992-12-21 | Fujitsu Ltd | 通信装置 |
US20020067736A1 (en) | 2000-09-29 | 2002-06-06 | The Regents Of The University Of California | System and method for ad hoc network access employing the distributed election of a shared transmission schedule |
US6480497B1 (en) | 1998-11-23 | 2002-11-12 | Ricochet Networks, Inc. | Method and apparatus for maximizing data throughput in a packet radio mesh network |
WO2003049405A1 (en) * | 2001-12-03 | 2003-06-12 | Nokia Corporation | Addressing and routing in wireless mesh networks |
US6587441B1 (en) | 1999-01-22 | 2003-07-01 | Technology Alternatives, Inc. | Method and apparatus for transportation of data over a managed wireless network using unique communication protocol |
US6640087B2 (en) | 2001-12-12 | 2003-10-28 | Motorola, Inc. | Method and apparatus for increasing service efficacy in an ad-hoc mesh network |
JP2004032739A (ja) * | 1997-07-04 | 2004-01-29 | Fuji Electric Holdings Co Ltd | 無線通信ネットワークシステム |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7418504B2 (en) * | 1998-10-30 | 2008-08-26 | Virnetx, Inc. | Agile network protocol for secure communications using secure domain names |
-
2004
- 2004-09-02 JP JP2004255082A patent/JP3795902B2/ja not_active Expired - Fee Related
-
2005
- 2005-08-26 US US11/660,305 patent/US7715399B2/en not_active Expired - Fee Related
- 2005-08-26 WO PCT/JP2005/015502 patent/WO2006025265A1/ja active Application Filing
- 2005-08-26 EP EP05780841A patent/EP1786150A4/en not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01291553A (ja) * | 1988-05-18 | 1989-11-24 | Fujitsu Ltd | メッシュネットワークにおける個別通信方式 |
JPH04368034A (ja) * | 1991-06-17 | 1992-12-21 | Fujitsu Ltd | 通信装置 |
JP2004032739A (ja) * | 1997-07-04 | 2004-01-29 | Fuji Electric Holdings Co Ltd | 無線通信ネットワークシステム |
US6480497B1 (en) | 1998-11-23 | 2002-11-12 | Ricochet Networks, Inc. | Method and apparatus for maximizing data throughput in a packet radio mesh network |
US6587441B1 (en) | 1999-01-22 | 2003-07-01 | Technology Alternatives, Inc. | Method and apparatus for transportation of data over a managed wireless network using unique communication protocol |
US20020067736A1 (en) | 2000-09-29 | 2002-06-06 | The Regents Of The University Of California | System and method for ad hoc network access employing the distributed election of a shared transmission schedule |
WO2003049405A1 (en) * | 2001-12-03 | 2003-06-12 | Nokia Corporation | Addressing and routing in wireless mesh networks |
US6640087B2 (en) | 2001-12-12 | 2003-10-28 | Motorola, Inc. | Method and apparatus for increasing service efficacy in an ad-hoc mesh network |
Non-Patent Citations (1)
Title |
---|
See also references of EP1786150A4 |
Also Published As
Publication number | Publication date |
---|---|
EP1786150A1 (en) | 2007-05-16 |
JP3795902B2 (ja) | 2006-07-12 |
EP1786150A4 (en) | 2010-03-10 |
US20080095164A1 (en) | 2008-04-24 |
US7715399B2 (en) | 2010-05-11 |
JP2006074413A (ja) | 2006-03-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5146037B2 (ja) | 無線制御装置、無線装置、および通信システム | |
TWI310276B (en) | Method and apparatus for implementing all-to-all communication in a wireless mesh network | |
US7664111B2 (en) | Network switching system having a connection device management table commonly owned on a wireless network | |
EP1624625A1 (en) | Constructing a tree-structured multi-hop radio system by selecting a host connection accepting radio node based on number of hops and either root radio node information or number of connected radio nodes | |
WO2010133152A1 (zh) | 远端射频单元发现及拓扑结构建立系统及方法 | |
JP2020077973A (ja) | 中継装置、中継方法及び中継プログラム | |
JP4935794B2 (ja) | 無線通信装置及び無線通信方法 | |
JP4474527B2 (ja) | マルチホップ型無線システムの構成方法及び無線ノード装置 | |
WO2006085468A1 (ja) | 通信装置 | |
KR20050000501A (ko) | 통신 단말 장치 및 통신 제어 방법 | |
JP4407658B2 (ja) | マルチホップネットワークシステムおよびその経路制御方法ならびにそれを構成する中継端末およびプログラム | |
WO2006025265A1 (ja) | 通信装置 | |
JPWO2006075402A1 (ja) | オープンループネットワークノード装置及びオープンループネットワーク制御方法 | |
JPH08163058A (ja) | 通信システム | |
JP7063396B2 (ja) | 通信装置、通信システム、方法、及び制御プログラム | |
EP0501446B1 (en) | Multiple access communication system capable of deciding a connection route among a central station, repeater stations, and terminal stations | |
JP3112827B2 (ja) | パケット交換中継方式 | |
JP3963308B2 (ja) | パケット中継器 | |
JP4532352B2 (ja) | 通信装置 | |
JPS58172098A (ja) | 中継局制御方式 | |
JP2012015733A (ja) | 通信端末、経路選択方法及び通信方式 | |
JP3524304B2 (ja) | 信号処理方法 | |
JPS6292637A (ja) | 同報通信方法 | |
JP2001160867A (ja) | 無線通信端末および無線通信システムならびに無線通信端末における送信データの送信方法 | |
JP3085295B2 (ja) | 無線通信システムのコネクション管理方式および方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 11660305 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005780841 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWP | Wipo information: published in national office |
Ref document number: 2005780841 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 11660305 Country of ref document: US |