WO2017164040A1 - 通信制御装置、通信制御方法、記録媒体 - Google Patents
通信制御装置、通信制御方法、記録媒体 Download PDFInfo
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- WO2017164040A1 WO2017164040A1 PCT/JP2017/010422 JP2017010422W WO2017164040A1 WO 2017164040 A1 WO2017164040 A1 WO 2017164040A1 JP 2017010422 W JP2017010422 W JP 2017010422W WO 2017164040 A1 WO2017164040 A1 WO 2017164040A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0096—Indication of changes in allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/76—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions
- H04L47/762—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions triggered by the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/121—Wireless traffic scheduling for groups of terminals or users
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/52—Allocation or scheduling criteria for wireless resources based on load
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/04—Registration at HLR or HSS [Home Subscriber Server]
Definitions
- the present invention relates to a communication control device, a communication control method, and a recording medium, and more particularly, to a communication control device, a communication control method, and a recording medium that change the allocation of communication resources.
- communication resources transmission bands
- communication resources are allocated to communication apparatuses that perform communication, and communication is performed using communication resources allocated in advance by each communication apparatus.
- Patent Document 1 describes a communication device including an index value calculation unit, a congestion degree measurement unit, a threshold setting unit, and a determination unit.
- the index value calculation means calculates an index value for each other communication device based on the communication channel quality between the other communication devices.
- the threshold value setting means calculates the threshold value based on the measurement result by the congestion degree measuring means.
- the determining unit compares the index value with the threshold value, and determines whether or not the radio resource is an allocation candidate for another communication device. According to Patent Document 1, such a configuration can sufficiently exhibit a power saving effect while suppressing the occurrence of congestion.
- an upper limit value of radio resource allocation is set for each of a plurality of terminals based on the presence of restriction information and alerts, and radio resource allocation to each terminal is performed based on the set upper limit value. It is described to do. According to Patent Literature 2, it is possible to allocate radio resources without waste by such a configuration.
- Patent Document 3 describes a wireless communication system having a master station having a scheduler and a plurality of slave stations.
- the scheduler performs scheduling periodically, and optimizes the transmission band that is dynamically allocated according to the execution state of data transmission. Then, the master station notifies each slave station of the transmission band assignment determined by the scheduler. Thereafter, the slave station performs data transmission according to the decision of the scheduler.
- transmission band allocation can be dynamically changed according to the state of data transmission.
- the present invention has a problem that if the allocation of communication resources allocated to each communication terminal is dynamically changed, congestion occurs when changing the allocation of communication resources, and the communication speed may be drastically reduced. It is an object of the present invention to provide a communication control apparatus that solves the problem.
- a transmission unit that transmits distribution information indicating distribution of the communication resource used when the communication device performs communication to each of a plurality of communication devices that perform communication using communication resources allocated in advance; When changing the distribution of the communication resource to each of the communication devices from the first distribution state to the second distribution state, the communication is performed based on the first distribution state and the second distribution state.
- An intermediate state generation unit for generating an intermediate state indicating resource allocation, The transmission unit transmits the distribution information to each of the communication devices so that the second distribution state is obtained after passing through the intermediate state generated by the intermediate state generation unit from the first distribution state. The structure is taken.
- a communication control method includes: For each of a plurality of communication devices that perform communication using communication resources allocated in advance, transmission information indicating the distribution of the communication resources used when the communication device performs communication, When changing the distribution of the communication resource to each of the communication devices from the first distribution state to the second distribution state, the communication is performed based on the first distribution state and the second distribution state. Create an intermediate state that indicates the allocation of resources, A configuration is adopted in which the distribution information is transmitted to each of the communication devices so that the second distribution state is obtained after passing through the intermediate state generated by the intermediate state generation unit from the first distribution state.
- a recording medium is In the communication control device, A transmission unit that transmits distribution information indicating distribution of the communication resource used when the communication device performs communication to each of a plurality of communication devices that perform communication using communication resources allocated in advance; When changing the distribution of the communication resource to each of the communication devices from the first distribution state to the second distribution state, the communication is performed based on the first distribution state and the second distribution state. An intermediate state generation unit that generates an intermediate state indicating resource allocation; The transmission unit transmits the distribution information to each of the communication devices so that the second distribution state is obtained after passing through the intermediate state generated by the intermediate state generation unit from the first distribution state. A recording medium on which a program is recorded.
- FIG. It is a figure which shows an example of a process of the communication resource allocation calculation process part shown in FIG. It is a figure which shows an example of the intermediate
- FIG. It is a figure which shows an example of the intermediate state which a communication resource allocation calculation process part produces
- FIG. 30 It is a figure which shows an example of the intermediate state which a communication resource allocation calculation process part produces
- FIGS. 1 and 2 are diagrams illustrating examples of communication resources.
- 3 and 4 are diagrams illustrating an example of the configuration of the communication system 1.
- FIG. 5 is a diagram illustrating an example of the configuration of the communication node 2.
- FIG. 6 is a diagram illustrating an example of the configuration of the distribution control communication node 3.
- FIG. 7 is a diagram illustrating an example of a start state and an end state that are allocations of communication resources.
- 8 to 11 are diagrams showing an example of an intermediate state when changing from the start state shown in FIG. 7 to the end state.
- FIG. 1 and 2 are diagrams illustrating examples of communication resources.
- 3 and 4 are diagrams illustrating an example of the configuration of the communication system 1.
- FIG. 5 is a diagram illustrating an example of the configuration of the communication node 2.
- FIG. 6 is a diagram illustrating an example of the configuration of the distribution control communication node 3.
- FIG. 7 is a diagram illustrating an example of a start state and an end state that are allocations of communication
- FIG. 12 is a diagram illustrating a communication resource allocation calculation processing unit 36 ⁇ / b> A that is an example of the configuration of the communication resource allocation calculation processing unit 36.
- FIG. 13 is a diagram illustrating an example of a start state and an end state.
- 14 to 15 are diagrams illustrating an example of processing of the communication resource allocation calculation processing unit 36A.
- FIG. 16 is a diagram illustrating an example of an intermediate state generated by the communication resource allocation calculation processing unit 36A from the start state and the end state illustrated in FIG.
- FIG. 17 is a diagram illustrating a communication resource allocation calculation processing unit 36B, which is an example of another configuration of the communication resource allocation calculation processing unit 36.
- FIG. 18 is a diagram illustrating an example of a start state and an end state.
- FIG. 19 is a diagram illustrating an example of processing of the communication resource allocation calculation processing unit 36B.
- FIG. 20 is a diagram illustrating an example of a start state and an end state.
- FIG. 21 is a diagram illustrating an example of another process of the communication resource allocation calculation processing unit 36B.
- FIG. 22 is a diagram illustrating an example of an intermediate state generated by the communication resource allocation calculation processing unit 36B from the start state and the end state illustrated in FIG.
- FIG. 23 is a diagram illustrating an example of a start state and an end state.
- FIG. 24 is a diagram illustrating an example of another process of the communication resource allocation calculation processing unit 36B.
- FIG. 25 is a diagram illustrating an example of an intermediate state generated by the communication resource allocation calculation processing unit 36B from the start state and the end state illustrated in FIG.
- FIG. 25 is a diagram illustrating an example of an intermediate state generated by the communication resource allocation calculation processing unit 36B from the start state and the end state illustrated in FIG.
- FIG. 20 is a diagram
- FIG. 26 is a diagram illustrating an example of a start state and an end state.
- FIG. 27 is a diagram illustrating an example of another process of the communication resource allocation calculation processing unit 36B.
- FIG. 28 is a diagram illustrating an example of an intermediate state generated by the communication resource allocation calculation processing unit 36B from the start state and the end state illustrated in FIG.
- FIG. 29 is a diagram illustrating an example of a situation of the communication system 1.
- FIG. 30 is a diagram illustrating a communication resource allocation calculation processing unit 36 ⁇ / b> C that is an example of another configuration of the communication resource allocation calculation processing unit 36.
- FIG. 31 is a diagram illustrating an example of an intermediate state generated by the communication resource allocation calculation processing unit 36C.
- FIG. 32 is a flowchart showing an example of the operation of the distribution control communication node 3.
- a communication node 2 that performs communication using pre-allocated communication resources (also referred to as radio wave resources; time domain, frequency domain, etc., representative ones are frequency bands), and a communication node A communication system 1 having a distribution control communication node 3 that allocates communication resources to 2 will be described.
- the distribution control communication node 3 of the communication system 1 in the present embodiment receives a final state (communication resource allocation state different from the start state) indicating communication resource allocation from the control application 37 or the like, each communication node 2 The allocation of communication resources to the is changed from the start state to the end state.
- the distribution control communication node 3 when the distribution control communication node 3 changes the distribution of communication resources for each communication terminal from the start state to the end state, the distribution control communication node 3 sets at least one intermediate state so that a congestion state does not occur due to the change. Generate. Then, the distribution control communication node 3 changes the distribution of communication resources to each communication node 2 so as to change from the start state to the end state after passing through the intermediate state.
- multiple access methods for allocating communication resources (mainly fixed) to a plurality of communication nodes 2.
- TDMA Time Multiple Access
- FDMA Frequency Division Multiple Access
- PDMA polarization division multiple access
- CDMA Code Division Multiple Access
- OFDMA Orthogonal Frequency Division Multiple Access
- SDMA Spatial Division Multiple Access
- NOMA non-orthogonal multiple access
- the multiple access system illustrated above is based on the multiplexing system corresponding to each.
- the multiplexing method is a method for logically dividing a signal in a single transmission line. For example, in time division multiplexing (TDM), as shown in FIG. 1, each of the time domains divided into several can be handled as independent transmission paths. Each logically divided transmission path is called “communication resource” in the text.
- TDM time division multiplexing
- a method for allocating communication resources may combine a plurality of methods.
- X1, X2, X3, X4, and X5 represent five communication nodes 2, and each communication node 2 shows a situation in which the entire communication resource is divided and used.
- OFDM resources OR1, OR2, OR3
- TDM resources TR1, TR2, TR3
- the communication resources are not necessarily fixed in advance or orthogonal to each other.
- the original communication resources are set to e_1, e_2, e_3,..., E_N ⁇ ⁇ , as in MIMO (MultipleMultiInput Multiple Output), these linear combinations and the like can also become new communication resources.
- the result of linear combination is distributed to K communication nodes 2.
- the communication system 1 described in the present embodiment may distribute communication resources using any of the multiple access methods described above.
- the explanation is made assuming that the time domain in TDM is a communication resource.
- the communication system 1 includes a communication node 2 (communication device) and a distribution control communication node 3 (communication control device).
- a mobile station can be assumed as the communication node 2.
- a distribution control communication node 3 for example, a base station can be assumed.
- the roles of the communication node 2 and the distribution control communication node 3 are not necessarily fixed.
- the distribution control communication node 3 can behave as the communication node 2 when it has a necessary configuration.
- the communication node 2 can behave as the distribution control communication node 3 when it has hardware or software for distribution control described later.
- the roles of control and controlled can be exchanged arbitrarily.
- the communication node 2 receives distribution information indicating distribution of communication resources allocated to the communication node 2 from the distribution control communication node 3. Then, the communication node 2 transmits user data using the allocated communication resources (in the time domain).
- FIG. 5 is an example of the configuration of the communication node 2.
- the communication node 2 includes, for example, an antenna 20, a modem 21, a controlled register 22, a transmission switch 23, and a transmission / reception data storage device 24.
- the antenna 20 is a physical interface in wireless communication.
- the communication node 2 transmits and receives signals to and from other communication nodes 2 and the distribution control communication node 3 via the antenna 20.
- the modem 21 demodulates the received signal received by the antenna 20 and extracts data.
- the extracted data is stored in the controlled register 22 and the transmission / reception data storage device 24. Further, the modem 21 modulates data into a transmission signal in accordance with, for example, an instruction from the transmission switch 23.
- the transmission signal modulated by the modem 21 is transmitted to another communication node 2 or the distribution control communication node 3 via the antenna 20.
- the controlled register 22 holds distribution information indicating the distribution of communication resources to the own device.
- the distribution information held by the controlled register 22 is used in the transmission switch 23.
- the transmission switch 23 refers to the distribution information held by the controlled register 22 and controls the modem 21 so as to transmit a transmission signal using the communication resources allocated to the own device.
- the transmission switch 23 controls the modulator / demodulator 21 so as to transmit a transmission signal in a transmission time region allocated to the own device.
- the transmission / reception data storage device 24 is a storage device such as a user data buffer or memory that holds user data among the data demodulated by the modem 21. Note that the communication node 2 may not have the transmission / reception data storage device 24.
- the communication node 2 has such a configuration, for example.
- the communication node 2 has a configuration as shown in FIG. 5, for example, so that it can receive distribution information and transmit user data based on the distribution information.
- the communication node 2 has a configuration as shown in FIG. 5, the distribution of communication resources cannot be controlled.
- the communication node 2 may be configured to perform some control response with the distribution control communication node 3 when receiving the distribution information from the distribution control communication node 3.
- the distribution control communication node 3 notifies each communication node 2 of distribution information indicating the distribution of communication resources while performing communication for transmitting normal user data with the communication node 2.
- the distribution control communication node 3 may distribute communication resources only for each communication node 2 or may allocate communication resources including itself (the distribution control communication node 3 itself that notifies distribution information). It doesn't matter. In the following, in order to simplify the description, a case where the distribution control communication node 3 allocates communication resources to each communication node 2 will be described.
- FIG. 6 is an example of the configuration of the distribution control communication node 3.
- the allocation control communication node 3 includes, for example, an antenna 30, a modem 31, a controlled register 32, a transmission switch 33, a transmission / reception data storage device 34, a communication monitoring unit 35, and a communication resource allocation calculation processing unit. 36, a control memory / step counter 38, and a control register 39, which are connected to a control application 37.
- the antenna 30, the modem 31 and the transmission switch 33 function as a transmission unit.
- the configurations of the antenna 30, the modem 31, the transmission switch 33, and the transmission / reception data storage device 34 are the same as those of the communication node 2. Therefore, detailed description is omitted.
- the controlled register 32 holds distribution information indicating the distribution of communication resources to the own device.
- the controlled register 32 is used when holding distribution information received from another distribution control communication node 3 and operates in the same manner as the controlled register 22 of the communication node 2.
- the distribution control communication node 3 Since the distribution control communication node 3 has the controlled register 32, the roles of control and controlled can be switched. However, the distribution control communication node 3 may not necessarily have the controlled register 32.
- the communication monitoring unit 35 monitors the reception signal received by the antenna 30. Specifically, the communication monitoring unit 35 monitors whether or not communication is performed according to the distribution information notified last time by each communication node 2 by monitoring the received signal. In other words, the communication monitoring unit 35 determines whether or not each communication node 2 is performing communication using the communication resource allocated to the communication node 2. Based on the communication result by the communication monitoring unit 35, it is determined whether or not to advance the counter of the control memory / step counter 38.
- the communication resource allocation calculation processing unit 36 When changing the state of communication resource allocation for each communication node 2 from the start state to the end state, the communication resource allocation calculation processing unit 36 (intermediate state generation unit), based on the start state and the end state, An intermediate state indicating the allocation of communication resources to the communication node 2 is generated.
- the communication resource allocation calculation processing unit 36 includes a storage device such as a logic circuit and a register.
- the communication resource allocation calculation processing unit 36 includes a calculation device and a storage device (not shown), and the calculation device executes a program included in the storage device, thereby realizing processing for generating an intermediate state.
- the communication resource allocation calculation processing unit 36 allocates communication resources to a communication node 2 different from the communication node 2 allocated in the previous allocation state (for example, the start state or the previous intermediate state). In order to prevent this, an intermediate state is generated by changing the previous distribution state. In other words, the communication resource allocation calculation processing unit 36 allocates communication resources to the same communication node 2 as the communication node 2 allocated in the previous allocation state, or to which communication node 2 However, an intermediate state in which the previous distribution state is changed is generated so that the state is not distributed. As described above, the communication resource allocation calculation processing unit 36 generates an intermediate state so that the same communication resource is not allocated to different communication nodes 2 in a continuous allocation state in time series. Further, the communication resource allocation calculation processing unit 36 generates an intermediate state so that there is a communication resource that is not allocated to any communication node 2.
- the communication resource allocation calculation processing unit 36 can have in advance an allocation value indicating the lower limit value of the communication resources allocated to each communication node 2 for each communication node 2.
- the communication resource allocation calculation processing unit 36 may generate an intermediate state so that the number of communication resources allocated to the communication node 2 is equal to or greater than the allocation value. I can do it.
- the communication resource allocation calculation processing unit 36 can be configured to generate an intermediate state using reliability information indicating communication reliability when the communication node 2 performs communication. For example, the communication resource allocation calculation processing unit 36 determines whether or not to allow a state in which the same communication resource is allocated to different communication nodes 2 in a continuous allocation state in time series based on the reliability information. I can do it.
- the reliability information can be obtained, for example, by measuring the reception power of the reception signal received from the communication node 2. Alternatively, the reliability information may be acquired based on an error rate or a signal detection rate when data is transmitted / received to / from the communication node 2.
- the communication resource allocation calculation processing unit 36 generates an intermediate state, and if the generated intermediate state includes a communication resource that is not allocated to any communication node 2, the communication resource includes any communication. Node 2 may be assigned. In other words, the communication resource allocation calculation processing unit 36 generates an intermediate state that includes communication resources that are not allocated to any communication node 2, and then transmits the intermediate state to any communication node 2 in the generated intermediate state. On the other hand, the intermediate state may be updated so that an arbitrary communication node 2 is assigned to a communication resource that is not allocated. In this way, by assigning an arbitrary communication node 2 to a communication resource that is not allocated to any communication node 2, there is a possibility of partial congestion while efficiently using the communication resource. It is possible to generate an intermediate state that reduces the possibility of congestion as a whole.
- the control application 37 designates a final state that is the final (target) communication resource allocation.
- the control application 37 may be included in the distribution control communication node 3 or may exist outside the distribution control communication node 3. In this embodiment, how to set the final state is not particularly limited.
- the control memory / step counter 38 holds all intermediate states, start states, and end states calculated by the communication resource allocation calculation processing unit 36 in order.
- the control memory / step counter 38 performs scheduling using a step counter or the like.
- control memory / step counter 38 refers to the monitoring result from the communication monitoring unit 35 and performs control based on the monitoring result. Specifically, the control memory / step counter 38 indicates the same allocation of communication resources as the previous time without advancing the step counter when there is a communication node 2 that has not been transmitted with the previously allocated communication resources as a result of monitoring. Resend distribution information. Alternatively, the control memory / step counter 38 partially advances the step. Alternatively, the control memory / step counter 38 instructs the communication resource allocation calculation processing unit 36 to recalculate communication resource allocation. As a result, the communication resource allocation calculation processing unit 36 generates an intermediate state according to the monitoring result of the communication monitoring unit 35.
- control memory / step counter 38 increments the step counter to increase the next communication resource.
- a state (intermediate state or final state) indicating the distribution of the data is written in the control register 39.
- control memory / step counter 38 refers to the monitoring result from the communication monitoring unit 35 and performs control based on the monitoring result.
- the control register 39 holds distribution information indicating the distribution of communication resources to each communication node 2 at the next transmission timing. As described above, the distribution information for each communication node 2 at the next timing is written in the control register 39 by the control memory / step counter 38.
- the distribution control communication node 3 has such a configuration, for example.
- the communication resource allocation calculation processing unit 36 generates, for example, two intermediate states as shown in FIG. 8 based on the start state and the end state shown in FIG.
- the communication resources R1, R2, and R11 to R20 have the same communication node 2 to which they are allocated. Further, the communication resources R3 to R10 are not allocated to any communication node 2.
- the communication resources are not allocated to the communication nodes 2 different from the communication nodes 2 allocated in the start state. I understand.
- communication resources are not allocated to the communication nodes 2 different from the communication nodes 2 allocated in the intermediate state 1.
- the communication resource allocation calculation processing unit 36 generates an intermediate state so that the same communication resource is not allocated to different communication nodes 2 in a continuous allocation state in time series.
- an intermediate state is generated so that communication resources that are not allocated to any communication node 2 exist.
- the communication resource allocation calculation processing unit 36 generates a plurality of intermediate states so that congestion cannot occur between consecutive allocation states.
- generated will also change.
- the assigned value for the communication node X2 is 7.
- the communication resource allocation calculation processing unit 36 generates an intermediate state as shown in FIG. Referring to FIGS. 8 and 9, in FIG. 9, the variation in the number of communication resources allocated to each communication node 2 is smaller than that in FIG. 8, but the number of intermediate states that pass through is increased. I understand that.
- the communication resource allocation calculation processing unit 36 When the assigned value for each communication node 2 is 0, the communication resource allocation calculation processing unit 36 generates an intermediate state 1 in which communication resources are not allocated to any communication node 2 as shown in FIG. Will do. In this case, even if the start state and the end state are any state, the allocation of communication resources changes in the order of the start state, the intermediate state 1, and the end state.
- FIG. 11 shows an example of a process for updating the intermediate state so that an arbitrary communication node 2 is allocated to the communication resource when the intermediate state includes communication resources that are not allocated to any communication node 2.
- FIG. 11 shows a change example of the intermediate state shown in FIG. 9, and an example of an arbitrary communication node 2 is shown in parentheses.
- the communication resources R3 to R6 that have not been allocated to any of the communication nodes 2 in FIG. 9 are arbitrary communication nodes 2 (for example, X4). Has been allocated.
- the communication resource allocation calculation processing unit 36 allocates an arbitrary communication node 2 to a communication resource that is not allocated to any communication node 2 in the intermediate state. You may comprise. As shown in the intermediate state 3 in FIG. 11, the arbitrary communication node 2 assigned by the communication resource allocation calculation processing unit 36 may be different for each communication resource. Further, as shown in the intermediate state 4, even if the communication resource allocation calculation processing unit 36 is configured as described above, it may be configured not to allocate communication resources as necessary.
- the first is a communication control algorithm and hardware that can operate even with hardware that does not have a large-scale arithmetic device, for example, a central processing unit (CPU), by relatively simple means. is there.
- a large-scale arithmetic device for example, a central processing unit (CPU)
- CPU central processing unit
- the first example is suitable for small but stable communication and communication that requires changing communication resource allocation.
- it can be used for control communication in a small aviation vehicle (as a control side).
- the communication resource allocation calculation processing unit 36A which is the first configuration example of the communication resource allocation calculation processing unit 36, is configured as shown in FIG. 12, for example.
- the communication resource allocation calculation processing unit 36A includes a register 361A, a data selection unit 362A, an AND gate 363A, an OR gate 364A, and an update determination unit OR gate 365A.
- the register 361A holds a start state and an end state, and an intermediate state during calculation input from the update determination unit OR gate 365A.
- the data selection unit 362A selects the latest intermediate state from the register 361A, and sequentially selects bit strings to be input to the logic gate (or performs parallel processing).
- the AND gate 363A performs an AND operation on the bool body for each bit with respect to the data set input from the data selection unit 362A.
- the OR gate 364A performs an OR operation on the bool body that converts the number of values input from the AND gate into one value for the data input from the AND gate 363A.
- the update determination unit OR gate 365A performs an OR operation on the Boolean body that converts the number of values input from the OR gate 364A into one value. Further, the update determination unit OR gate 365A performs a process of updating the value if the result of the OR operation by the update determination unit OR gate 365A is 0, and not updating if the result is 1.
- the communication resource allocation calculation processing unit 36A performs, for example, the following processing with the above configuration.
- communication resources R1 and R2 are allocated to the communication node 2 of X1.
- Communication resources R3 and R4 are allocated to the communication node 2 of X2.
- the communication resource R5 is allocated to the communication node 2 of X3.
- communication resource R1 is allocated to communication node 2 of X1
- communication resources R2 and R3 are allocated to communication node 2 of X2
- communication resources R4 and R5 are allocated to communication node 2 of X3. Yes.
- the start state and the end state are stored in the register 361A.
- the data selection unit 362A selects a start state and an end state.
- the data selection unit 362A defines a combination of data passing through the AND gate 363A.
- FIG. 14 and FIG. 15 show an example of data selection and calculation in the logic gate (AND gate 363A, OR gate 364A, update determination unit OR gate 365A).
- AND gate 363A, OR gate 364A, update determination unit OR gate 365A As will be described later, in this algorithm, one node (or a plurality of nodes) is switched from the start state to the communication resource distribution state in the end state for each step.
- the communication node 2 of X1 is allocated the communication resources R1 and R2 in the initial state, and is allocated the communication resource R1 in the final state.
- the communication node 2 of X2 is allocated communication resources R3 and R4 in the start state, and is allocated communication resources R2 and R3 in the end state. Further, the communication node 2 of X3 is allocated R5 in the start state, and is allocated R4 and R5 in the end state.
- each matrix has communication nodes 2 arranged in the column direction and communication resources arranged in the row direction. If communication resources in a row are allocated to the communication nodes 2 in a certain column, The matrix element is 1. For example, the communication resource 2 of X1 is allocated communication resources R1 and R2 in the initial state. Therefore, it will be expressed as (11000).
- the process GP1 on the left side of FIG. 14 shows an example of determining whether or not to replace the distribution of X1 with respect to the communication node 2 to the final state. Further, the middle process GP2 in FIG.
- FIG. 14 shows an example in which it is determined whether or not the distribution of X2 to the communication node 2 is switched to the final state. Further, the process GP3 on the right side of FIG. 14 shows an example of determining whether or not the distribution of X3 to the communication node 2 is switched to the final state.
- the data selection unit 362A determines the first column of the final state GT and the second and third columns (other than the first column) of the start state GS for each bit in order to determine the communication node 2 of X1. , And inputs to the AND gate 363A.
- the calculation result in the AND gate 363A is input to the OR gate 364A.
- the calculation result in the OR gate 364A is input to the update determination unit OR gate 365A.
- the update determination unit OR gate 365A determines that the next allocation of communication resources is the final state for the communication node 2 of X1.
- the data selection unit 362A determines the second column of the final state GT and the first and third columns (other than the second column) of the start state GS for each bit in order to determine the communication node 2 of X2. Are input to the AND gate 363A.
- the update determination unit OR gate 365A determines that the next allocation of communication resources is not updated (starting state) for the communication node 2 of X2.
- an intermediate state 1 in which only the distribution state of X1 is updated to the final state is generated. That is, in the intermediate state 1, the communication resource R1 is allocated to the communication node 2 of X1, the communication resources R3 and R4 are allocated to the communication node 2 of X2, and the communication resource R5 is allocated to the communication node 2 of X3. It becomes.
- the intermediate state 1 obtained as a result of the above calculation is held in the register 361A.
- the intermediate state 1 is regarded as the start state, and the same calculation is performed between the intermediate state 1 and the end state. Since the communication node 2 of X1 is already in the final state, only X2 and X3 need be calculated.
- the intermediate state 1 and the intermediate state 2 shown in FIG. 16 are generated.
- communication resources that are in the final state are allocated to the communication node 2 of X1 as compared with the start state. Accordingly, the communication resource R1 is allocated to the communication node 2 of X1, the communication resources R3 and R4 are allocated to the communication node 2 of X2, and the communication resource R5 is allocated to the communication node 2 of X3.
- communication resources that are in the final state are allocated to the communication node 2 of X 2. Accordingly, the communication resource R1 is allocated to the communication node 2 of X1, the communication resources R2 and R3 are allocated to the communication node 2 of X2, and the communication resource R5 is allocated to the communication node 2 of X3.
- an intermediate state is generated so that the same communication resource is not distributed to different communication nodes 2 in a continuous distribution state in time series.
- the conditions to which the communication resource allocation calculation processing unit 36A can be applied are as follows. 1 When each communication node 2 is expressed as being allocated only continuous communication resources in the initial state, each communication node 2 is allocated only continuous communication resources even in the final state. , The “order” of each communication node 2 is the same based on the allocated communication resource. 3 The limit (assigned value) of the number of communication resources is not less than the smaller value of the start state and the end state for each communication node 2.
- a communication resource allocation calculation processing unit 36B which is a second configuration example of the communication resource allocation calculation processing unit 36, is configured as shown in FIG. 17, for example.
- the communication resource allocation calculation processing unit 36B includes a register 361B, a calculation device 362B, and a memory 363B.
- the arithmetic device 362B is a CPU (Central Processing Unit) or the like, and executes processing for generating an intermediate state by executing a program stored in a storage device such as the memory 363B on the CPU.
- CPU Central Processing Unit
- the second method is to write out all possible patterns of communication resource allocation, link the allocation patterns that can be arranged next to one step without congestion, and generate a graph.
- a sequence of intermediate states connecting the starting state and the ending state with the minimum steps is obtained by searching the shortest path on the graph.
- search tree method repeats the process of writing all the states adjacent to the start state and writing all the states adjacent to the respective states until the end state is found. If the same state appears during processing, the one that appears later is discarded. Since the connection of graphs is represented by a tree diagram based on a certain node, it is called a search tree.
- the register 361B holds a start state, an end state, and an assigned value indicating the number of resources for each communication node 2.
- the arithmetic unit 362B replaces the part that was the logic gate in the first method.
- the arithmetic device 362B is configured to be programmable, and is, for example, a CPU or FPGA (Field Programmable Gate Array).
- the graph structure can be stored in the memory 363B.
- the number of communication resources, the number of communication nodes 2, and the assigned value for each communication node 2 are determined in advance, the calculation time for generating the intermediate state can be greatly shortened by storing the graph structure. Is possible.
- the memory 363B is not necessarily an essential component. Therefore, the communication resource allocation calculation processing unit 36B may not have the memory 363B.
- the communication resource allocation calculation processing unit 36B that executes the second method performs, for example, the following processing with the above configuration.
- the allocation of communication resources is changed from the start state LS to the end state LT shown in FIG.
- the communication resource R1 is allocated to the communication node 2 of X1.
- Communication resources R2 and R3 are allocated to the communication node 2 of X2.
- the communication resource R1 is allocated to the communication node 2 of X2.
- the communication resource R2 is allocated to the communication node 2 of X1.
- the communication resource R3 is not allocated to the communication node 2.
- the arithmetic unit 362B When the register 361B determines the start state LS, the arithmetic unit 362B generates, as shown in FIG. 19, one after another, a state that is not congested with the start state LS and can be adjacent, and creates a tree graph. Alternatively, the arithmetic device 362B refers to the memory 363B and reads the graph structure from the memory 363B. Then, when the arithmetic device 362B generates the final state LT during the generation of the graph or searches the final state LT from the memory 363B, the arithmetic device 362B follows the link to the initial state LS. Thereby, the arithmetic device 362B determines a state between the start state LS and the end state LT as an intermediate state.
- the arithmetic device 362B generates an intermediate state LM1 and an intermediate state LM2.
- the intermediate state LM1 is a state in which the communication resource R1 is allocated to the communication node 2 of X1, the communication resource R2 is not allocated to the communication node 2, and the communication resource R3 is allocated to the communication node 2 of X2. is there.
- the communication resource R1 is not allocated to the communication node 2
- the communication resource R2 is allocated to the communication node 2 of X1
- the communication resource R3 is allocated to the communication node 2 of X2. State.
- an intermediate state is generated so that the same communication resource is not distributed to different communication nodes 2 in a continuous distribution state in time series.
- the second method can generate an intermediate state that reaches the final state in a minimum step with respect to an arbitrary start state, an arbitrary end state, and an arbitrary assigned value for each node.
- the arithmetic device 362B may be configured to generate a graph starting from the end state and search for the start state.
- a third configuration example of the communication resource allocation calculation processing unit 36 will be described.
- the third method a method for determining a communication resource allocation route with a smaller amount of computation in order to achieve the same purpose as the method described in the second method will be described.
- the third method is effective when the number of communication resources and the number of communication nodes 2 are large.
- a method of minimizing the length of the entire path by recombining a plurality of data strings having different lengths with each other will be described.
- the third configuration example of the communication resource allocation calculation processing unit 36 is the same as the communication resource allocation calculation processing unit 36B which is the second configuration example. In the third configuration example, only the algorithm executed by the arithmetic device 362B is different.
- the start state and the end state are regarded as a directed bipartite graph.
- the communication node 2 exceeding the assigned value for each communication node 2 in the start state and the communication resource not allocated to any communication node 2 are “left end points”, and the assigned value for each communication node 2 in the end state
- the communication node 2 exceeding the above and communication resources not allocated to any communication node 2 are defined as “right end points”, and a plurality of paths including all links of the bipartite graph as a whole are arbitrarily configured (FIG. 21).
- the communication node 2 that can be positioned at the left end point and the right end point is expressed as 1 degree of freedom.
- a path is formed in which the communication nodes 2 of X1 and X3 are the left end points and the communication nodes 2 of X4 and X6 are the right end points.
- the arithmetic device 362B performs a “recombination” operation mainly on these roads to generate a combination of roads that minimizes the length of the road having the maximum length. Then, the arithmetic device 362B generates an intermediate state from the combination of roads. In addition, when there is a communication resource that is not allocated to any node in the start state or the end state, the arithmetic device 362B allows the end point of the road to be the communication resource itself that is not allocated, not the communication node 2. It shall generate a way.
- the communication resource allocation calculation processing unit 36B that executes the third method performs, for example, the following process.
- communication resources MR1 and MR2 are allocated to communication node 2 of MX1, and communication resource MR3 is allocated to communication node 2 of MX2.
- Communication resources MR4 and MR5 are allocated to the communication node 2 of MX3, and communication resource MR6 is allocated to the communication node 2 of MX4.
- the communication resource MR7 is allocated to the communication node 2 of MX5, and the communication resource MR8 is allocated to the communication node 2 of MX6.
- the communication resource MR1 is allocated to the communication node 2 of MX1, and the communication resource MR2 is allocated to the communication node 2 of MX2. Further, the communication resource MR3 is allocated to the communication node 2 of MX3, and the communication resources MR4 and MR5 are allocated to the communication node 2 of MX4. The communication resource MR6 is allocated to the communication node 2 of MX5, and the communication resources MR7 and MR8 are allocated to the communication node 2 of MX6.
- the register 361B holds the start state and the end state as described above. This is equivalent to holding the bipartite graph shown in FIG.
- the bipartite graph is generated from the start state and the end state held by the register 361B, for example, by the arithmetic device 362B as described below.
- FIG. 20 shows a case where the number of communication resources is 8 and the number of communication nodes 2 is 6, as described above. Also, it is assumed that the assigned value for each communication node 2 is all one.
- the arithmetic unit 362B arranges the communication resources MR1 to MR8 as one element of the bipartite graph.
- the arithmetic device 362B arranges the communication nodes 2 of MX1 to MX6 as the other element. Then, the arithmetic device 362B establishes a directed link from the communication node 2 to the communication resource allocated to each communication node 2 in the initial state.
- data representing a total of eight links MX1 to MR1, MX1 to MR2, MX2 to MR3, MX3 to MR4, MX3 to MR5, MX4 to MR6, MX5 to MR7, MX6 to MR8, is retained. It will be.
- this link may be held as 8 ⁇ 6 data in which the link existence is 1 and the absence is 0, and the communication resources allocated to each link are held in a nested structure. May be used (assuming an internal register).
- the computing device 362B establishes a link opposite to that in the start state from the communication node 2 for the communication resources allocated to each communication node 2 in the final state.
- MR1 to MX1, MR2 to MX2, MR3 to MX3, MR4 to MX4, MR5 to MX4, MR6 to MX5, MR7 to MX6, MR8 to MX6 are held in total. It will be.
- the arithmetic device 362B holds the link in the final state in the same format as the initial state.
- the arithmetic device 362B generates a “road” (or “series”) from the bipartite graph.
- the processing for generating the road by the arithmetic device 362B will be described with reference to three specific examples including those in the description.
- the computing device 362B generates a plurality of paths exceeding the number determined from the assigned value from the generated bipartite graph. As described above, in the case of FIG. 20, the assigned value for each communication node 2 is 1, and it is 6 if all communication nodes 2 are totaled. Therefore, the number of roads with end points is 2 (8-6).
- the arithmetic device 362B generates MX1, MR2, MX2, MR3, MX3, MR4, MX4, MR6, MX5, MR7, MX6 as the first path (series 1).
- the arithmetic device 362B generates MX3, MR5, and MX4 as the second path (series 2).
- the arithmetic device 362B can generate the above-described path by an arbitrary method.
- the arithmetic device 362B generates a path by following the directed link in order from the end point.
- the arithmetic device 362B when generating a road from a bipartite graph, there is a possibility of generating a cycle without end points. In this case, it is possible to connect to a road having an end point by a method described later.
- the arithmetic unit 362B writes the plurality of road candidates generated in the register 361B.
- the arithmetic device 362B writes the series 1 and the series 2 shown in FIG. 21 into the register 361B.
- the arithmetic device 362B tries to “recombine” the roads (sequences) before and after the communication node 2.
- series 1 and series 2 have MX3 and MX4 communication nodes 2 as a common node (the same communication node 2). Therefore, the arithmetic device 362B performs recombination, for example, at the position of the communication node 2 of the MX3 of the series 1 and the series 2. That is, the two lines are switched in MX3. As a result, MX1, MR2, MX2, MR3, MX3, MR5, and MX4 are generated as the series 1A obtained by rearranging the series 1. Further, MX3, MR4, MX4, MR6, MX5, MR7, and MX6 are generated as the series 2A obtained by rearranging the series 2.
- Arithmetic device 362B rearranges the sequences so that the difference between the maximum value and the minimum value of the sequence length is minimized. If the difference between the maximum value and the minimum value of the sequence length is 2 or less and is not further shortened in any recombination, each sequence having this small difference gives the shortest step in generating an intermediate state.
- the number of intermediate states from the start state to the end state is equal to the length of the maximum sequence, the number of intermediate states to be generated can be minimized by performing the rearrangement as described above.
- the length of the series 1 is 6 and the length of the series 2 is 2.
- the length of the sequence 1A is 4, and the length of the sequence 2A is 4. Therefore, the intermediate state sequence corresponding to the series 1A and the series 2A gives a communication resource allocation schedule at the minimum step.
- intermediate state 1, intermediate state 2, intermediate state 3 as shown in FIG. 22 can be generated.
- the arithmetic device 362B generates the intermediate state by performing parallel processing from the left end for the series 1A and the series 2A shown in FIG.
- the arithmetic device 362B performs the above processing by determining an intermediate state for each communication resource.
- the arithmetic device 362B adds the communication resource to the communication node 2. Perform the process.
- the arithmetic device 362B performs a process of deleting the communication resource from the communication node 2.
- an arrow extends from MX1 which is the communication node 2 to the communication resource MR2.
- An arrow extends from the communication node 2 MX3 to the communication resource MR4. Therefore, the arithmetic device 362B deletes the distribution of MR2 with respect to MX1 and deletes the distribution of MR4 with respect to MX3. As a result, the arithmetic device 362B generates the intermediate state 1 shown in FIG.
- an arrow extends from the communication resource MR2 to MX2 which is the communication node 2, and an arrow extends from MX2 which is the communication node 2 to the communication resource MR3. Further, an arrow extends from the communication resource MR4 to MX4, which is the communication node 2, and an arrow extends from MX4, which is the communication node 2, to the communication resource MR6. Therefore, the arithmetic device 362B distributes MR2 to MX2 and deletes the distribution of MR3 to MX2. Further, the arithmetic device 362B distributes MR4 to MX4 and deletes the distribution of MR6 to MX4. As a result, the arithmetic device 362B generates the intermediate state 2 shown in FIG.
- an arrow extends from the communication resource MR3 to MX3, which is the communication node 2, and an arrow extends from MX3, which is the communication node 2, to the communication resource MR5.
- An arrow extends from the communication resource MR6 to MX5, which is the communication node 2, and an arrow extends from MX5, which is the communication node 2, to the communication resource MR7. Therefore, the arithmetic device 362B distributes MR3 to MX3 and deletes the distribution of MR5 to MX3. Further, the arithmetic device 362B distributes MR6 to MX5 and deletes the distribution of MR7 to MX5. As a result, the arithmetic device 362B generates the intermediate state 3 shown in FIG.
- an arrow extends from the communication resource MR5 to MX4 which is the communication node 2
- an arrow extends from the communication resource MR7 to MX6 which is the communication node 2. Therefore, the arithmetic device 362B distributes MR5 to MX4 and distributes MR7 to MX6. Thereby, it becomes equal to the final state and the processing is completed.
- the average resource utilization rate is maximized.
- the series 1 becomes, for example, a closed circuit NX2, NR3, NX3, NR4, and NX2, as shown in FIG.
- the communication node 2 NX1 moves to the allocated communication resource (NR1 or NR2) and returns immediately in common in the start state and the end state.
- the arithmetic device 362B can select any one of the above methods by any method as long as all resources are equivalent.
- the arithmetic device 362B may select any one of the above-described paths so that resources used by the nodes in the intermediate state are as continuous as possible.
- the arithmetic device 362B selects, for example, NX1, NR2, and NX1 as the series 2 as illustrated in FIG.
- the computing device 362B can add a bi-directional link from any communication resource on the road to any communication node 2 that does not need to be on the road with respect to the road with the endpoint.
- the arithmetic device 362B refers to the loops NX2, NR3, NX3, NR4, and NX2 that are the series 1, and is a bidirectional link to the communication node 2 included in the loop, NR2, NX2, and NR2 Are added to NX1, NR2, and NX1 that are series 2. That is, the arithmetic device 362B generates the expansion equivalent series 2 shown in FIG. When the expansion equivalent series 2 generated by the arithmetic device 362B is expanded with reference to the end points, NX1, NR2, NX2, NR2, and NX1 are obtained.
- the arithmetic device 362B recombines between the generated series (series 1 and extended equivalent series 2). As a result, for example, as illustrated in FIG. 24, the arithmetic device 362B generates one series, NX1, NR2, NX2, NR3, NX3, NR4, NX2, NR2, and NX1. Then, the arithmetic device 362B generates four intermediate states (intermediate state 1, intermediate state 2, intermediate state 3, and intermediate state 4) as shown in FIG. 25 from the generated series.
- the arithmetic device 362B can generate two sequences as shown in FIG. In other words, the arithmetic device 362B can generate the series 1, OX1, OR2, OX2, OR3, OX3, OR4, OX4, OR5, OX5 and the series 2, OX6, OR8, OX7. In this case, since there is no communication node 2 common to the two sequences, it is not possible to perform simple recombination of the sequences.
- the arithmetic device 362B generates the expanded equivalent series 2 as shown in FIG. In other words, a bidirectional link from the communication resource OR8 to the arbitrary communication node 2 OX3 is added to the series 2 that is the end point road.
- OX6, OR8, OX3, OR8, OX7 are obtained.
- the communication node 2 OX3 is common to the series 1 and the extended equivalent series 2. Therefore, the arithmetic device 362B tries to “recombine” the roads (series) before and after OX3 which is the same communication node 2.
- the arithmetic unit 362B generates OX1, OR2, OX2, OR3, OX3, OR8, OX7 as the series 1A. Further, the arithmetic device 362B generates OX6, OR8, OX3, OR4, OX4, OR5, OX5 as the series 2A. Then, the arithmetic device 362B generates three intermediate states based on the generated series 1A and series 2A as shown in FIG.
- sequence length of the sequence 1A after recombination execution is 4, and the sequence length of the sequence 2A is 4. Since the sequence length of the sequence 1 before recombination is 5, it can be seen that the number of intermediate states to be generated can be reduced by executing recombination.
- the extended sequence common node (OX3 in the case of FIG. 27) is the destination of the recombination.
- the arithmetic device 362B generates an intermediate state as follows. Generate a bipartite graph from the start and end states. Generate a sequence based on the bipartite graph. Generate intermediate states from sequences.
- the arithmetic device 362B When the same communication node 2 exists in a plurality of sequences, the sequences are rearranged so that the difference between the maximum value and the minimum value of the sequence length is minimized. • If there is a cycle, add a bidirectional link. If the difference between the maximum value and the minimum value of the sequence length is 3 or more, the sequence length is shortened by adding a bidirectional link.
- the fourth is related to stochastic control, and is the most practical communication resource control means that can select an efficient parameter according to the purpose.
- This method is also a generalization of the communication resource allocation method including the own station (the base station itself).
- the communication resource allocation calculation processing unit 36C which is the fourth configuration example of the communication resource allocation calculation processing unit 36, communicates communication between the communication node 2 that performs resource allocation and the other communication nodes 2. Used in situations where is defined. As shown in FIG. 29, for example, if the communication distance is increased, the received power of the communication node 2 is decreased, and the reliability is decreased (the value indicated by the reliability information is decreased). As described above, the reliability information may be defined by the received power, or may be defined by an error rate or a signal detection rate when data is actually transmitted / received. In the following, for example, it is defined by the signal detection rate. Signal detection is generally performed by the modem 31 before modulation / demodulation. Therefore, defining the reliability by the signal detection rate eliminates the need for a special configuration such as a configuration for measuring the received power.
- FIG. 30 shows an example of the configuration of the communication resource allocation calculation processing unit 36C.
- the communication resource allocation calculation processing unit 36C includes a data division unit 361C, a communication resource allocation calculation processing unit (36A or 36B) 362C, and a data integration unit 363C.
- the communication resource allocation calculation processing unit (36A or 36B) 362C is the communication resource allocation calculation processing unit 36A shown in FIG. 12 or the communication resource allocation calculation processing unit 36B shown in FIG.
- the communication resource allocation calculation processing unit 36C includes the configuration of the communication resource allocation calculation processing unit 36A or the communication resource allocation calculation processing unit 36B.
- the data dividing unit 361C adds a random variable to each communication node 2 (or each communication resource) according to the communication reliability value for each communication node 2. Then, the data dividing unit 361C determines whether or not to allow overlap in a time-series continuous distribution state according to the added random variable. That is, it is determined whether the transition from the start state to the end state is performed in one step or an intermediate state that is not congested is interposed.
- the data dividing unit 361C divides the communication node 2 and the entire communication resource into the communication node 2 and the communication resource that are the parts that do not sandwich the intermediate state, and the communication node 2 and the communication resource that are the parts that sandwich the intermediate state. To divide. Then, the data dividing unit 361C outputs only the communication node 2 and the communication resource that are the part sandwiching the intermediate state to the communication resource allocation calculation processing unit (36A or 36B) 362C.
- the data dividing unit 361C compares the reliability information (signal detection rate) with a predetermined threshold value. Then, based on the comparison result, a value of 1 or 0 is given as a determination value. For example, the data dividing unit 361C gives the determination value 1 to the communication node 2 for which the value indicated by the reliability information is less than the threshold, and sets the determination value 0 for the communication node 2 for which the value indicated by the reliability information is equal to or greater than the threshold. Is granted. Then, the data dividing unit 361C includes the communication node 2 to which the determination value 1 is assigned and the communication resources to which the communication node 2 to which the determination value 1 is assigned are allocated in the start state and not allocated in the end state.
- the data dividing unit 361C determines that the communication node 2 to which the determination value 1 is assigned allocates the communication resource allocated in the start state to the communication node 2 allocated in the end state. The data is output to the communication resource allocation calculation processing unit (36A or 36B) 362C.
- the communication resource allocation calculation processing unit (36A or 36B) 362C has the same configuration as the communication resource allocation calculation processing unit 36A or the communication resource allocation calculation processing unit 36B.
- the communication resource allocation calculation processing unit (36A or 36B) 362C performs the same processing as the communication resource allocation calculation processing unit 36A or the communication resource allocation calculation processing unit 36B.
- the data integration unit 363C moves the communication node 2 and the communication resources that have not been output to the communication resource allocation calculation processing unit (36A or 36B) 362C in the data division unit 361C to the final state in one step (at the time of the intermediate state 1).
- the intermediate state and the final state output from the communication resource allocation calculation processing unit (36A or 36B) 36C2 are combined.
- the communication resource allocation calculation processing unit 36C performs the following processing.
- the allocation of communication resources is changed from the start state shown in FIG. 31 to the end state.
- the communication resource R1 is allocated to the communication node 2 of X1.
- Communication resources R2 and R3 are allocated to the communication node 2 of X2.
- Communication resources R4 and R5 are allocated to the communication node 2 of X3.
- the communication resource R6 is allocated to the communication node 2 of X4.
- the communication resources R1 and R2 are allocated to the communication node 2 of X2.
- the communication resource R3 is allocated to the communication node 2 of X1.
- the communication resource R4 is allocated to the communication node 2 of X3.
- Communication resources R5 and R6 are allocated to the communication node 2 of X4.
- the data dividing unit 361C assigns a determination value 0 to X1, X2, and X4 that are communication nodes 2, and a determination value 1 to X3 that is a communication node 2.
- the data dividing unit 361C determines that the communication node 2 (X3, X4) to which the communication resource R4, R5 allocated in the start state is allocated to the communication node 2 (X3) to which the determination value 1 is allocated is allocated in the final state. Only the communication resources R4, R5, R6 involved in the start state and the end state are output to the communication resource allocation calculation processing unit (36A or 36B) 362C.
- the communication resource allocation calculation processing unit (36A or 36B) 362C performs communication resource allocation calculation processing for the output target.
- the communication resource allocation calculation processing unit (36A or 36B) 362C as shown in FIG. 31, from the state in which R4 and R5 are allocated to X3 and R6 is allocated to X4 as a partial start state, R4 is allocated to X3.
- Intermediate state 1 that is a state in which R6 is allocated to X4 is generated.
- the communication resource allocation calculation processing unit (36A or 36B) 362C outputs the generated partial state column to the data integration unit 363C.
- the data integration unit 363C adds the communication resource allocation in the final state of X1 and X2 as it is after the intermediate state 1 in the state sequence for each step input from the communication resource allocation calculation processing unit (36A or 36B) 362C. . That is, in the intermediate state 1, R3 is allocated to X1, and R1 and R2 are allocated to X2. Also, R4 is allocated to X3, and R5 and R6 are allocated to X4. As a result, it becomes as shown in FIG.
- step S101 information indicating the final state output by the control application 37 is received (step S101). Then, the communication resource allocation calculation processing unit 36 generates a plurality of intermediate states between the start state and the end state so that congestion cannot occur between successive states (step S102).
- the control memory / step counter 38 stores the generated intermediate state, start state, and end state in order (step S103). In the first stage, the step counter is at an initial value, and the distribution of the initial communication resources is written in the control register 39.
- the control memory / step counter 38 increments the counter and writes the intermediate state 1 which is the next state after the start state to the control register 39.
- the transmission switch 33 is turned on in the time domain for the distribution control communication node 3 to transmit, and the modulator / demodulator 31 converts the distribution information for the communication node 2 into a signal waveform together with user data, and transmits it (step S104). ).
- the communication node 2 receives the distribution information and user data. Then, the distribution information is separated and written to the controlled register 22. At this time, it is sufficient for the communication node 2 to write only the time domain information allocated to itself into the controlled register 22. Thereafter, the communication node 2 turns on the transmission switch 23 (in the time domain) using the communication resource to which each is assigned, and transmits user data.
- the distribution control communication node 3 monitors the communication resource used by the communication node 2 for transmission in the communication monitoring unit 35 (step S105). As a result of monitoring by the communication monitoring unit 35, when all the time regions actually transmitted coincide with the previously notified allocation of communication resources stored in the control register 39 or the like (Yes in step S106) Then, it is determined whether or not the communication resource allocation is in a final state (step S107).
- step S107 If it is in the final state (step S107, Yes), the communication resource allocation process is terminated. On the other hand, if it is not the final state (step S107, No), the control memory / step counter 38 increments the counter and writes the communication resource allocation of the next intermediate state 2 to the control register 39. Then, the distribution information is transmitted to each communication node 2 (step S104).
- the communication monitoring unit 35 performs the communication resource allocation calculation processing unit. 36 is instructed to generate the intermediate state again by regarding the actually transmitted time region as a new start state. As a result, the communication resource allocation calculation processing unit 36 generates a plurality of intermediate states such that congestion cannot occur between successive states between the new start state and the end state (step S102). . In other words, the communication resource allocation calculation processing unit 36 generates an intermediate state according to the monitoring result of the communication monitoring unit 35.
- the distribution information indicating the distribution of the same communication resource as the previous time may be transmitted without incrementing the counter 38.
- the communication resource allocation calculation processing unit 36 regards the latest time region actually transmitted from the communication node 2 as the start state. Recalculation can be performed. That is, the start state and the end state can always be updated.
- the distribution control communication node 3 of the communication system 1 in the present embodiment has the communication resource distribution calculation processing unit 36.
- the distribution control communication node 3 changes the distribution of communication resources for the communication node 2 from the start state to the end state, at least one intermediate state is prevented so that a congestion state does not occur due to the change. Can be generated.
- the distribution control communication node 3 can change the distribution of communication resources to each communication node 2 so as to change from the start state to the end state after passing through the intermediate state. As a result, when changing the allocation of communication resources from the start state to the end state, it is possible to reduce the possibility of congestion and to reduce the possibility that the communication speed will rapidly decrease.
- the method described in the present embodiment is combined with an error detection code, an error correction code, particularly an error detection code, thereby suppressing the decoding error itself derived from transmission line noise and reducing the actual congestion probability to zero as much as possible.
- the reliability can be further improved. Specifically, when an error is detected in the information on the communication resource to which the communication node 2 is allocated, the information is not used at the next transmission, and the communication resource allocated at the previous transmission is reused and transmitted as it is. To do. That is, the same processing as when the distribution information is not received may be performed.
- the method described in the present embodiment is not used, it is difficult to simply suppress congestion using codes.
- an intermediate state is generated so that the same communication resource is not distributed to different communication nodes 2 in a time-series continuous distribution state. Therefore, by performing the above method, the congestion probability is minimized in principle, and it is possible to perform communication resource allocation control while suppressing the congestion probability even for a communication person whose control communication is unstable. Furthermore, the communication node 2 that receives communication resource allocation control only needs to use the communication resource according to the received distribution information, and does not need to return control information for authentication.
- the allocation change rate can be increased while allowing the congestion probability to some extent.
- the number of communication resources allocated to each communication node 2 in the intermediate state is guaranteed as the allocated value. For this reason, even during the change of communication resource allocation, fluctuations in the amount of communication can be suppressed and the desired amount of communication can always be maintained.
- the method described in the present embodiment includes, for example, unmanned aircraft control communication, robot control communication, medical device control communication, communication control communication, encryption control communication, other control communication, and long-distance communication. It can be used for (unstable communication), movement (replacement) of goods, and the like.
- the communication control device 4 in the present embodiment includes a transmission unit 41 and an intermediate state generation unit 42.
- the intermediate state generation unit 42 When changing the allocation of communication resources to each of the communication devices from the first distribution state to the second distribution state, the intermediate state generation unit 42 is based on the first distribution state and the second distribution state. The intermediate state indicating the allocation of communication resources is generated.
- the transmission unit 41 transmits allocation information indicating allocation of communication resources used when the communication device performs communication to each of the plurality of communication devices that perform communication using communication resources allocated in advance.
- the transmission unit 41 transmits the distribution information to each of the communication devices so that the second distribution state is obtained after passing through the intermediate state generated by the intermediate state generation unit 42 from the first distribution state.
- the communication control device 4 in the present embodiment includes the transmission unit 41 and the intermediate state generation unit 42.
- the intermediate state generating unit 42 changes the first distribution state and the second distribution state when changing the communication resource distribution to each of the communication devices from the first distribution state to the second distribution state.
- an intermediate state indicating the distribution of communication resources can be generated.
- the transmission unit 41 can transmit the distribution information to each of the communication devices so as to enter the second distribution state after passing through the intermediate state from the first distribution state.
- the communication control device 4 can be realized by incorporating a predetermined program into the communication control device 4.
- the program according to another aspect of the present invention is used when a communication apparatus performs communication with each of a plurality of communication apparatuses that perform communication using communication resources allocated in advance to the communication control apparatus.
- an intermediate state generation unit that generates an intermediate state indicating communication resource allocation is realized, and the transmission unit is generated from the first distribution state by the intermediate state generation unit.
- the information control method executed by the operation of the communication control device 4 described above performs communication with each of a plurality of communication devices that perform communication using communication resources allocated in advance. Distribution information indicating the distribution of communication resources to be used at the time, and when changing the distribution of communication resources to each of the communication devices from the first distribution state to the second distribution state, Based on the second distribution state, an intermediate state indicating communication resource allocation is generated, and each communication device is configured to enter the second distribution state after passing through the intermediate state from the first distribution state. This is a method of transmitting distribution information.
- a transmission unit that transmits distribution information indicating distribution of the communication resource used when the communication device performs communication to each of a plurality of communication devices that perform communication using communication resources allocated in advance; When changing the distribution of the communication resource to each of the communication devices from the first distribution state to the second distribution state, the communication is performed based on the first distribution state and the second distribution state.
- An intermediate state generation unit for generating an intermediate state indicating resource allocation, The transmission unit transmits the distribution information to each of the communication devices so that the second distribution state is obtained after passing through the intermediate state generated by the intermediate state generation unit from the first distribution state.
- Communication control device
- (Appendix 2) The communication control device according to attachment 1, wherein The intermediate state generation unit is different from the communication device in which the communication resource is distributed in the previous distribution state when the distribution of the communication resource to each of the communication devices is changed from the previous distribution state.
- a communication control device that generates the intermediate state in which the previous distribution state is changed so as not to be distributed to the communication device.
- the communication control device according to any one of appendices 1 to 3,
- generation part is a communication control apparatus which produces
- the communication control device according to any one of appendices 1 to 4,
- the intermediate state generation unit generates the intermediate state so that the communication resources that are not allocated to any of the communication devices are present, and then transmits the intermediate state to any one of the generated intermediate states.
- the communication control device according to any one of appendices 1 to 6,
- generation part is a communication control apparatus which produces
- the communication control device according to appendix 7,
- the intermediate state generation unit generates the intermediate state based on a comparison result between the reliability information and a predetermined threshold value.
- the communication control device according to any one of appendices 1 to 7, A communication monitoring unit for monitoring communication performed by the communication device;
- generation part is a communication control apparatus which produces
- Appendix 9-2 The communication control method according to appendix 9 or 9-1, When changing the allocation of the communication resource to each of the communication devices from the previous allocation state, the communication resource is allocated to the same communication device as the communication device allocated in the previous allocation state. Or the communication control method which produces
- a transmission unit that transmits distribution information indicating distribution of the communication resource used when the communication device performs communication to each of a plurality of communication devices that perform communication using communication resources allocated in advance; When changing the distribution of the communication resource to each of the communication devices from the first distribution state to the second distribution state, the communication is performed based on the first distribution state and the second distribution state.
- An intermediate state generation unit that generates an intermediate state indicating resource allocation; The transmission unit transmits the distribution information to each of the communication devices so that the second distribution state is obtained after passing through the intermediate state generated by the intermediate state generation unit from the first distribution state. program.
- Appendix 10-2 The program according to appendix 10 or 10-1, The intermediate state generation unit, when changing the allocation of the communication resources for each of the communication devices from the previous allocation state, the same communication device as the communication device in which the communication resources are allocated in the previous allocation state A program for generating the intermediate state in which the previous distribution state is changed so that the communication resource is distributed or the communication resource is not distributed to any of the communication devices.
- the programs described in the above embodiments and supplementary notes are stored in a storage device or recorded on a computer-readable recording medium.
- the recording medium is a portable medium such as a flexible disk, an optical disk, a magneto-optical disk, and a semiconductor memory.
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Abstract
Description
予め配分された通信資源を用いて通信を行う複数の通信装置のそれぞれに対して、当該通信装置が通信を行う際に使用する前記通信資源の配分を示す配分情報を送信する送信部と、
前記通信装置のそれぞれに対する前記通信資源の配分を第1の配分状態から第2の配分状態へと変化させる際に、前記第1の配分状態と前記第2の配分状態とに基づいて、前記通信資源の配分を示す中間状態を生成する中間状態生成部と、を有し、
前記送信部は、前記第1の配分状態から前記中間状態生成部が生成した中間状態を経由した後に前記第2の配分状態となるよう、前記通信装置のそれぞれに対して前記配分情報を送信する
という構成を採る。
予め配分された通信資源を用いて通信を行う複数の通信装置のそれぞれに対して、当該通信装置が通信を行う際に使用する前記通信資源の配分を示す配分情報を送信し、
前記通信装置のそれぞれに対する前記通信資源の配分を第1の配分状態から第2の配分状態へと変化させる際に、前記第1の配分状態と前記第2の配分状態とに基づいて、前記通信資源の配分を示す中間状態を生成し、
前記第1の配分状態から前記中間状態生成部が生成した中間状態を経由した後に前記第2の配分状態となるよう、前記通信装置のそれぞれに対して前記配分情報を送信する
という構成を採る。
通信制御装置に、
予め配分された通信資源を用いて通信を行う複数の通信装置のそれぞれに対して、当該通信装置が通信を行う際に使用する前記通信資源の配分を示す配分情報を送信する送信部と、
前記通信装置のそれぞれに対する前記通信資源の配分を第1の配分状態から第2の配分状態へと変化させる際に、前記第1の配分状態と前記第2の配分状態とに基づいて、前記通信資源の配分を示す中間状態を生成する中間状態生成部と、を実現させ、
前記送信部は、前記第1の配分状態から前記中間状態生成部が生成した中間状態を経由した後に前記第2の配分状態となるよう、前記通信装置のそれぞれに対して前記配分情報を送信するプログラムを記録した記録媒体である。
本発明の第1の実施形態を図1乃至図32を参照して説明する。図1、図2は、通信資源の一例を示す図である。図3、図4は、通信システム1の構成の一例を示す図である。
図5は、通信ノード2の構成の一例を示す図である。図6は、配分制御通信ノード3の構成の一例を示す図である。図7は、通信資源の配分である始状態と終状態との一例を示す図である。図8乃至図11は、図7で示す始状態から終状態へと変化させる際の中間状態の一例を示す図である。図12は、通信資源配分演算処理部36の構成の一例である通信資源配分演算処理部36Aを示す図である。図13は、始状態と終状態との一例を示す図である。図14乃至図15は、通信資源配分演算処理部36Aの処理の一例を示す図である。図16は、図13で示す始状態と終状態とから通信資源配分演算処理部36Aが生成する中間状態の一例を示す図である。図17は、通信資源配分演算処理部36の他の構成の一例である通信資源配分演算処理部36Bを示す図である。図18は、始状態と終状態との一例を示す図である。図19は、通信資源配分演算処理部36Bの処理の一例を示す図である。図20は、始状態と終状態との一例を示す図である。図21は、通信資源配分演算処理部36Bの他の処理の一例を示す図である。図22は、図20で示す始状態と終状態とから通信資源配分演算処理部36Bが生成する中間状態の一例を示す図である。図23は、始状態と終状態との一例を示す図である。図24は、通信資源配分演算処理部36Bの他の処理の一例を示す図である。図25は、図23で示す始状態と終状態とから通信資源配分演算処理部36Bが生成する中間状態の一例を示す図である。図26は、始状態と終状態との一例を示す図である。図27は、通信資源配分演算処理部36Bの他の処理の一例を示す図である。図28は、図26で示す始状態と終状態とから通信資源配分演算処理部36Bが生成する中間状態の一例を示す図である。図29は、通信システム1の状況の一例を示す図である。図30は、通信資源配分演算処理部36の他の構成の一例である通信資源配分演算処理部36Cを示す図である。図31は、通信資源配分演算処理部36Cが生成する中間状態の一例を示す図である。図32は、配分制御通信ノード3の動作の一例を示すフローチャートである。
被制御用レジスタ22が保持する配分情報は、送信スイッチ23において利用されることになる。
被制御用レジスタ32は、他の配分制御通信ノード3から受信した配分情報を保持する際に用いられ、通信ノード2の被制御用レジスタ22と同等に動作する。
通信監視部35による通信結果に基づいて、制御用メモリ/ステップカウンタ38のカウンタを進めるかなどを判断することになる。
その結果、(10000)AND(00110)=(00000)となり、(10000)AND(00001)=(00000)となることになる。
1 始状態において各通信ノード2が連続する通信資源のみを配分されているように表現する場合、終状態においても各通信ノード2は連続する通信資源のみを配分されている
2 始状態と終状態において、配分通信資源を基準とした、各通信ノード2の「順序」は等しい。
3 通信資源数の制限(割当値)は、通信ノード2毎に、始状態と終状態のうち小さい値以上である。
図21で示す場合、系列1の長さは6であり、系列2の長さは2である。一方で、系列1Aの長さは4であり、系列2Aの長さは4である。そのため、系列1Aと系列2Aに対応する中間状態列が、最小ステップでの通信資源配分スケジュールを与えることになる。
また、通信資源MR6から通信ノード2であるMX5へと矢印が伸びるとともに、通信ノード2であるMX5から通信資源MR7へと矢印が伸びている。そのため、演算装置362Bは、MX3に対してMR3を配分するとともに、MX3に対するMR5の配分を消去する。また、演算装置362Bは、MX5に対してMR6を配分するとともに、MX5に対するMR7の配分を消去する。その結果、演算装置362Bは、図22で示す中間状態3を生成することになる。
そのため、演算装置362Bは、MX4に対してMR5を配分するとともに、MX6に対してMR7を配分する。これにより、終状態と等しくなって処理は完了する。
従って、その差が3あることになる。そこで、演算装置362Bは、図27で示すように、伸長等価系列2を生成する。つまり、端点のある道である系列2に対して、通信資源OR8から任意の通信ノード2であるOX3への双方向リンクを追加する。上記伸長等価系列2を、端点を基準に展開すると、OX6、OR8、OX3、OR8、OX7、となることになる。その結果、系列1と上記伸長等価系列2とで、通信ノード2であるOX3が共通することになる。そこで、演算装置362Bは、同一の通信ノード2であるOX3の前後で、道(系列)の「組み換え」を試みる。
・始状態と終状態から二部グラフを生成する。
・二部グラフに基づいて、系列を生成する。
・系列から中間状態を生成する。
また、演算装置362Bは、
・複数の系列に同一の通信ノード2が存在する場合、系列長の最大値と最小値の差が最小になるように系列の組み替えを行う。
・閉路が存在する場合、双方向リンクを追加する。
・系列長の最大値と最小値との差が三以上ある場合、双方向リンクを追加することで系列長を短くする。
また、通信資源R2とR3とがX2の通信ノード2に配分されている。また、通信資源R4とR5とがX3の通信ノード2に配分されている。また、通信資源R6がX4の通信ノード2に配分されている。また、終状態において、通信資源R1、R2がX2の通信ノード2に配分されている。また、通信資源R3がX1の通信ノード2に配分されている。また、通信資源R4がX3の通信ノード2に配分されている。また、通信資源R5、R6がX4の通信ノード2に配分されている。
次に、図33を参照して、第2の実施形態について説明する。第2の実施形態では、通信制御装置4の構成の概要について説明する。
これにより、第1の配分状態から一斉に第2の配分状態へと変化することにより生じる輻輳の可能性を低減させることが可能となる。
上記実施形態の一部又は全部は、以下の付記のようにも記載されうる。以下、本発明における通信制御装置などの概略を説明する。但し、本発明は、以下の構成に限定されない。
予め配分された通信資源を用いて通信を行う複数の通信装置のそれぞれに対して、当該通信装置が通信を行う際に使用する前記通信資源の配分を示す配分情報を送信する送信部と、
前記通信装置のそれぞれに対する前記通信資源の配分を第1の配分状態から第2の配分状態へと変化させる際に、前記第1の配分状態と前記第2の配分状態とに基づいて、前記通信資源の配分を示す中間状態を生成する中間状態生成部と、を有し、
前記送信部は、前記第1の配分状態から前記中間状態生成部が生成した中間状態を経由した後に前記第2の配分状態となるよう、前記通信装置のそれぞれに対して前記配分情報を送信する
通信制御装置。
付記1に記載の通信制御装置であって、
前記中間状態生成部は、前回の配分状態から前記通信装置のそれぞれに対する前記通信資源の配分を変化させる際に、前記通信資源が前記前回の配分状態において配分されている前記通信装置とは異なる前記通信装置に対して配分されないように、前記前回の配分状態を変化させた前記中間状態を生成する
通信制御装置。
付記1又は2に記載の通信制御装置であって、
前記中間状態生成部は、前回の配分状態から前記通信装置のそれぞれに対する前記通信資源の配分を変化させる際に、前記通信資源が前記前回の配分状態において配分されている前記通信装置と同一の前記通信装置に対して配分されるか、又は、前記通信資源がいずれの前記通信装置に対しても配分されない状態となるように、前記前回の配分状態を変化させた前記中間状態を生成する
通信制御装置。
付記1乃至3のいずれかに記載の通信制御装置であって、
前記中間状態生成部は、いずれの前記通信装置に対しても配分されていない前記通信資源が存在するように前記中間状態を生成する
通信制御装置。
付記1乃至4のいずれかに記載の通信制御装置であって、
前記中間状態生成部は、いずれの前記通信装置に対しても配分されていない前記通信資源が存在するように前記中間状態を生成した後、生成した当該中間状態のうちのいずれの前記通信装置に対しても配分されていない前記通信資源に任意の前記通信装置を割り当てるよう生成した前記中間状態を更新する
通信制御装置。
付記1乃至5のいずれかに記載の通信制御装置であって、
前記通信装置に対する前記通信資源の配分数を示す割当値が予め定められており、
前記中間状態生成部は、前記通信装置に対する前記通信資源の配分数が前記割当値以上になるように前記中間状態を生成する
通信制御装置。
付記1乃至6のいずれかに記載の通信制御装置であって、
前記中間状態生成部は、前記通信装置が行う通信の信頼性を示す信頼性情報に基づいて、前記中間状態を生成する
通信制御装置。
付記7に記載の通信制御装置であって、
前記中間状態生成部は、前記信頼性情報と予め定められた閾値との比較結果に基づいて前記中間状態を生成する
通信制御装置。
付記1乃至7のいずれかに記載の通信制御装置であって、
前記通信装置が行う通信を監視する通信監視部を有し、
前記中間状態生成部は、前記通信監視部の監視結果に応じて前記中間状態を生成する
通信制御装置。
予め配分された通信資源を用いて通信を行う複数の通信装置のそれぞれに対して、当該通信装置が通信を行う際に使用する前記通信資源の配分を示す配分情報を送信し、
前記通信装置のそれぞれに対する前記通信資源の配分を第1の配分状態から第2の配分状態へと変化させる際に、前記第1の配分状態と前記第2の配分状態とに基づいて、前記通信資源の配分を示す中間状態を生成し、
前記第1の配分状態から前記中間状態生成部が生成した中間状態を経由した後に前記第2の配分状態となるよう、前記通信装置のそれぞれに対して前記配分情報を送信する
通信制御方法。
付記9に記載の通信制御方法であって、
前回の配分状態から前記通信装置のそれぞれに対する前記通信資源の配分を変化させる際に、前記通信資源が前記前回の配分状態において配分されている前記通信装置とは異なる前記通信装置に対して配分されないように、前記前回の配分状態を変化させた前記中間状態を生成する
通信制御方法。
付記9又は9-1に記載の通信制御方法であって、
前回の配分状態から前記通信装置のそれぞれに対する前記通信資源の配分を変化させる際に、前記通信資源が前記前回の配分状態において配分されている前記通信装置と同一の前記通信装置に対して配分されるか、又は、前記通信資源がいずれの前記通信装置に対しても配分されない状態となるように、前記前回の配分状態を変化させた前記中間状態を生成する
通信制御方法。
通信制御装置に、
予め配分された通信資源を用いて通信を行う複数の通信装置のそれぞれに対して、当該通信装置が通信を行う際に使用する前記通信資源の配分を示す配分情報を送信する送信部と、
前記通信装置のそれぞれに対する前記通信資源の配分を第1の配分状態から第2の配分状態へと変化させる際に、前記第1の配分状態と前記第2の配分状態とに基づいて、前記通信資源の配分を示す中間状態を生成する中間状態生成部と、を実現させ、
前記送信部は、前記第1の配分状態から前記中間状態生成部が生成した中間状態を経由した後に前記第2の配分状態となるよう、前記通信装置のそれぞれに対して前記配分情報を送信する
プログラム。
付記10に記載のプログラムであって、
前記中間状態生成部は、前回の配分状態から前記通信装置のそれぞれに対する前記通信資源の配分を変化させる際に、前記通信資源が前記前回の配分状態において配分されている前記通信装置とは異なる前記通信装置に対して配分されないように、前記前回の配分状態を変化させた前記中間状態を生成する
プログラム。
付記10又は10-1に記載のプログラムであって、
前記中間状態生成部は、前回の配分状態から前記通信装置のそれぞれに対する前記通信資源の配分を変化させる際に、前記通信資源が前記前回の配分状態において配分されている前記通信装置と同一の前記通信装置に対して配分されるか、又は、前記通信資源がいずれの前記通信装置に対しても配分されない状態となるように、前記前回の配分状態を変化させた前記中間状態を生成する
プログラム。
2 通信ノード
20 アンテナ
21 変復調器
22 被制御用レジスタ
23 送信スイッチ
24 送受信データ用記憶装置
3 配分制御通信ノード
30 アンテナ
31 変復調器
32 被制御用レジスタ
33 送信スイッチ
34 送受信データ用記憶装置
35 通信監視部
36、36A、36B、36C 通信資源配分演算処理部
361A レジスタ
362A データ選択部
363A ANDゲート
364A ORゲート
365A 更新判定部ORゲート
361B レジスタ
362B 演算装置
363B メモリ
361C データ分割部
362C 通信資源配分演算処理部(36A又は36B)
363C データ統合部
37 制御用アプリケーション
38 制御用メモリ/ステップカウンタ
39 制御用レジスタ
4 通信制御装置
41 送信部
42 中間状態生成部
Claims (15)
- 予め配分された通信資源を用いて通信を行う複数の通信装置のそれぞれに対して、当該通信装置が通信を行う際に使用する前記通信資源の配分を示す配分情報を送信する送信手段と、
前記通信装置のそれぞれに対する前記通信資源の配分を第1の配分状態から第2の配分状態へと変化させる際に、前記第1の配分状態と前記第2の配分状態とに基づいて、前記通信資源の配分を示す中間状態を生成する中間状態生成手段と、を有し、
前記送信手段は、前記第1の配分状態から前記中間状態生成手段が生成した中間状態を経由した後に前記第2の配分状態となるよう、前記通信装置のそれぞれに対して前記配分情報を送信する
通信制御装置。 - 請求項1に記載の通信制御装置であって、
前記中間状態生成手段は、前回の配分状態から前記通信装置のそれぞれに対する前記通信資源の配分を変化させる際に、前記通信資源が前記前回の配分状態において配分されている前記通信装置とは異なる前記通信装置に対して配分されないように、前記前回の配分状態を変化させた前記中間状態を生成する
通信制御装置。 - 請求項1又は2に記載の通信制御装置であって、
前記中間状態生成手段は、前回の配分状態から前記通信装置のそれぞれに対する前記通信資源の配分を変化させる際に、前記通信資源が前記前回の配分状態において配分されている前記通信装置と同一の前記通信装置に対して配分されるか、又は、前記通信資源がいずれの前記通信装置に対しても配分されない状態となるように、前記前回の配分状態を変化させた前記中間状態を生成する
通信制御装置。 - 請求項1乃至3のいずれかに記載の通信制御装置であって、
前記中間状態生成手段は、いずれの前記通信装置に対しても配分されていない前記通信資源が存在するように前記中間状態を生成する
通信制御装置。 - 請求項1乃至4のいずれかに記載の通信制御装置であって、
前記中間状態生成手段は、いずれの前記通信装置に対しても配分されていない前記通信資源が存在するように前記中間状態を生成した後、生成した当該中間状態のうちのいずれの前記通信装置に対しても配分されていない前記通信資源に任意の前記通信装置を割り当てるよう生成した前記中間状態を更新する
通信制御装置。 - 請求項1乃至5のいずれかに記載の通信制御装置であって、
前記通信装置に対する前記通信資源の配分数を示す割当値が予め定められており、
前記中間状態生成手段は、前記通信装置に対する前記通信資源の配分数が前記割当値以上になるように前記中間状態を生成する
通信制御装置。 - 請求項1乃至6のいずれかに記載の通信制御装置であって、
前記中間状態生成手段は、前記通信装置が行う通信の信頼性を示す信頼性情報に基づいて、前記中間状態を生成する
通信制御装置。 - 請求項7に記載の通信制御装置であって、
前記中間状態生成手段は、前記信頼性情報と予め定められた閾値との比較結果に基づいて前記中間状態を生成する
通信制御装置。 - 請求項1乃至7のいずれかに記載の通信制御装置であって、
前記通信装置が行う通信を監視する通信監視手段を有し、
前記中間状態生成手段は、前記通信監視手段の監視結果に応じて前記中間状態を生成する
通信制御装置。 - 予め配分された通信資源を用いて通信を行う複数の通信装置のそれぞれに対して、当該通信装置が通信を行う際に使用する前記通信資源の配分を示す配分情報を送信し、
前記通信装置のそれぞれに対する前記通信資源の配分を第1の配分状態から第2の配分状態へと変化させる際に、前記第1の配分状態と前記第2の配分状態とに基づいて、前記通信資源の配分を示す中間状態を生成し、
前記第1の配分状態から前記中間状態を経由した後に前記第2の配分状態となるよう、前記通信装置のそれぞれに対して前記配分情報を送信する
通信制御方法。 - 請求項10に記載の通信制御方法であって、
前回の配分状態から前記通信装置のそれぞれに対する前記通信資源の配分を変化させる際に、前記通信資源が前記前回の配分状態において配分されている前記通信装置とは異なる前記通信装置に対して配分されないように、前記前回の配分状態を変化させた前記中間状態を生成する
通信制御方法。 - 請求項10又は11に記載の通信制御方法であって、
前回の配分状態から前記通信装置のそれぞれに対する前記通信資源の配分を変化させる際に、前記通信資源が前記前回の配分状態において配分されている前記通信装置と同一の前記通信装置に対して配分されるか、又は、前記通信資源がいずれの前記通信装置に対しても配分されない状態となるように、前記前回の配分状態を変化させた前記中間状態を生成する
通信制御方法。 - 通信制御装置に、
予め配分された通信資源を用いて通信を行う複数の通信装置のそれぞれに対して、当該通信装置が通信を行う際に使用する前記通信資源の配分を示す配分情報を送信する送信手段と、
前記通信装置のそれぞれに対する前記通信資源の配分を第1の配分状態から第2の配分状態へと変化させる際に、前記第1の配分状態と前記第2の配分状態とに基づいて、前記通信資源の配分を示す中間状態を生成する中間状態生成手段と、を実現させ、
前記送信手段は、前記第1の配分状態から前記中間状態生成手段が生成した中間状態を経由した後に前記第2の配分状態となるよう、前記通信装置のそれぞれに対して前記配分情報を送信する
プログラムを記録した記録媒体。 - 請求項13に記載のプログラムであって、
前記中間状態生成手段は、前回の配分状態から前記通信装置のそれぞれに対する前記通信資源の配分を変化させる際に、前記通信資源が前記前回の配分状態において配分されている前記通信装置とは異なる前記通信装置に対して配分されないように、前記前回の配分状態を変化させた前記中間状態を生成する
プログラムを記録した記録媒体。 - 請求項13又は14に記載のプログラムであって、
前記中間状態生成手段は、前回の配分状態から前記通信装置のそれぞれに対する前記通信資源の配分を変化させる際に、前記通信資源が前記前回の配分状態において配分されている前記通信装置と同一の前記通信装置に対して配分されるか、又は、前記通信資源がいずれの前記通信装置に対しても配分されない状態となるように、前記前回の配分状態を変化させた前記中間状態を生成する
プログラムを記録した記録媒体。
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