CN114095059B - Power line communication method, device and system - Google Patents
Power line communication method, device and system Download PDFInfo
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Abstract
The embodiment of the application discloses a power line communication method and a device, and the method comprises the steps that all nodes in a domain interact respective parameter information, and then according to the indication of a domain main node, the same type of parameters are uniformly calculated locally to obtain the sequence of respective occupied time slots; by using the scheme of the embodiment, the master node is not required to indicate the time slot sequence occupied by each node, the length of the MAP frame is reduced, and the length of the transmission opportunity used for transmitting data in the MAC period is increased, so that the efficiency of transmitting the service information by each node in each MAC period is improved.
Description
Technical Field
The present application relates to the field of power line communication, and in particular, to a method, an apparatus, and a system for power line communication.
Background
Power Line Communication (PLC) is a carrier communication method for transmitting data through a power line. The power line devices communicate with each other in a time division multiplexing manner, and if more power line devices exist in the power line network, more resources need to be occupied by the time slot indication information of data sent by the power line devices, which causes that the efficiency of the power line devices for transmitting service information is not high.
Disclosure of Invention
The embodiment of the application provides a power line communication method, device and system.
In a first aspect, an embodiment of the present application provides a power line communication method, where the method includes: all nodes in the domain interact respective parameter information, then the domain master node indicates all the nodes, and calculates the same type of parameters locally to obtain respective sequence of occupied time slots; by using the scheme of the embodiment, the domain master node does not need to indicate the time slot sequence occupied by each node, the length of the MAP frame is reduced, and the length of the transmission opportunity used for transmitting data in the MAC period is increased, so that the efficiency of transmitting the service information by each node in each MAC period is improved.
Optionally, in some possible embodiments, the parameter information includes three fields for identifying a node identification, a parameter type, and a parameter value, respectively.
Optionally, in some possible embodiments, the parameter information includes two fields, respectively for identifying a node identifier and a parameter value, where a fixed bit position of the parameter value identifies which parameter type the parameter value corresponds to.
Optionally, in some possible embodiments, the parameter information includes one or more of a bit loading table, a forward error correction error rate, a retransmission rate, a maximum kp value/average kp value of a channel estimation window, an average transmission rate, and an average reception rate.
Optionally, in some possible embodiments, the calculation means includes a weighted proportional fair sorting algorithm, a round robin sorting algorithm, a greedy algorithm sorting the channels according to their quality from good to bad, or other sorting algorithms.
Optionally, in some possible embodiments, the domain master node broadcasts and sends a node list message to all common nodes in the domain, where the node list message includes a node identifier set of the domain master node and all common nodes in the domain; the node identification set comprises information which can uniquely identify each node in the domain; the domain master checks whether parameter information of all nodes is collected according to the node list message. Therefore, each node can be ensured to accurately judge whether parameter information of all nodes is collected, and the condition that different nodes are inconsistent when the node sequence is calculated due to missing of information of a certain node is avoided.
In a second aspect, an embodiment of the present application provides a power line communication method, which is described from the perspective of an ordinary node, and specifically includes:
the common node receives and stores parameter information sent by the domain master node and other common nodes; the parameter information at least indicates the identification of the node sending the parameter information and the value of the parameter;
the common node receives strategy indication information sent by the domain master node, wherein the strategy indication information at least indicates a parameter category and a calculation mode for calculating a time slot sequence;
the common terminal calculates the sequence of the time slots occupied by the common terminal according to the parameter type and the calculation mode in the strategy indication information;
and the common method occupies time slots to send data according to the calculated sequence.
By using the scheme of the embodiment, the receiving domain master node does not need to indicate the time slot sequence occupied by each node, the length of the MAP frame is reduced, and the length of the transmission opportunity for transmitting data in the MAC period is increased, so that the efficiency of transmitting the service information by each node (including the common node) in each MAC period is improved.
Optionally, in some possible embodiments, the node list message includes a node identification set of the domain master node and all common nodes in the domain; the all common nodes comprise the common nodes and other common nodes in the domain; the common checks whether parameter information of all nodes is collected according to the node list message. Therefore, each common node can be ensured to accurately judge whether parameter information of all nodes is collected, and the condition that different nodes are inconsistent when the node sequence is calculated due to missing of information of a certain node is avoided.
In a third aspect, an embodiment of the present application provides a power line communication apparatus, serving as a domain master node, including a transceiver, a processor, and a memory, where:
the transceiver is used for broadcasting and sending parameter information of the transceiver to all common nodes, receiving and storing the parameter information sent by the common nodes; the parameter information at least can indicate the identification of the node sending the parameter information and the value of the parameter;
the memory is used for storing the obtained parameter information and forming a corresponding relation table for identifying the node identification, the parameter type and the parameter value;
the transceiver is used for broadcasting and sending strategy indicating information to all common nodes in the domain, wherein the strategy indicating information at least indicates a parameter category and a calculation mode for calculating a time slot sequence;
the processor is used for calculating the sequence of the time slots occupied by the power line communication device according to the parameter types and the calculation modes in the strategy indication information;
the transceiver is further configured to transmit data in the calculated order occupying the time slots.
Optionally, in some possible embodiments, the transceiver is configured to broadcast a node list message to all common nodes in a domain, where the node list message includes a node identification set of the domain master node and all common nodes in the domain; the processor is further configured to check whether parameter information of all nodes is collected according to the node list message.
In a fourth aspect, an embodiment of the present application provides a power line communication apparatus, as a common node, including a transceiver, a processor, and a memory, where:
the transceiver is used for receiving parameter information sent by the domain main node and other common nodes; the parameter information at least can indicate the identification of the node sending the parameter information and the value of the parameter;
the memory is used for storing the obtained parameter information and forming a corresponding relation table for identifying the node identification, the parameter type and the parameter value;
the transceiver is used for receiving the strategy indicating information sent by the domain master node, and the strategy indicating information at least indicates a parameter category and a calculation mode for calculating the time slot sequence;
the processor calculates the sequence of time slots occupied by the power line communication device according to the parameter types and the calculation mode in the strategy indication information;
and the transceiver occupies the time slots to transmit data according to the calculated sequence.
Optionally, in some possible embodiments, the transceiver is further configured to receive a node list message sent by the domain master node, where the node list message includes a node identification set of the domain master node and all common nodes in the domain; the processor is further configured to check whether parameter information of all nodes is collected according to the node list message.
In a fifth aspect, an embodiment of the present application provides a power line communication system, which includes one domain master node described above and at least one common node described above.
In a sixth aspect, embodiments of the present application provide a chip or a chip system, where the chip or the chip system includes at least one processor and a communication interface, where the communication interface and the at least one processor are interconnected by a line, and the at least one processor is configured to execute a computer program or instructions to perform a method according to any one of the above first aspect or the first aspect, or perform a method according to any one of the above second aspect or the second aspect.
In a seventh aspect, the present application provides a computer program product, where the computer program product includes computer software instructions, and the computer software instructions can be loaded by a processor to implement the flow in the method of any one of the first aspect and the second aspect.
According to the technical scheme, the embodiment of the application has the following advantages: the length of the time sequence indication information in the MAP frame is reduced, and the proportion of the transmission opportunity for transmitting data in the MAC period is increased, so that the efficiency of transmitting the service information in each MAC period is improved.
Drawings
FIG. 1 is a schematic diagram of a PLC network architecture;
fig. 2 is a schematic structural diagram of one MAC cycle in PLC communication;
FIG. 3 is a diagram illustrating a MAP frame structure in PLC communication;
fig. 4 is a flowchart of a timeslot allocation method according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a power line communication apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another power line communication apparatus according to an embodiment of the present disclosure;
Detailed Description
The PLC network, also called a carrier communication network, is a communication network that uses power lines as communication media to realize aggregation, transmission, and interaction of power consumption information of power consumers. An exemplary PLC communication system may have the architecture shown in fig. 1. As shown in fig. 1, the power line communication system may include a power line, a gateway device, a plurality of power line communication devices, and a terminal or other network-using device. The power line is used for transmitting current and driving electric appliances. The power line can also be used to provide access to the internet through a gateway device connected to the internet. The power line communication device may include a gateway-side power line communication device (e.g., a first power line communication device shown in fig. 1) to which the gateway-side power line communication device is connected. The power line communication device may further include a terminal-side power line communication device (e.g., a second power line communication device shown in fig. 1) for providing a network signal to a network-using device such as a terminal. The above power line communication device may specifically be a power modem (modem) or other type of power line communication modem.
The first power line communication device may receive data from the internet from the gateway device when transmitting the data from the internet to the terminal. The first power line communication device may also modulate data from the gateway onto the PLC signal and couple to the power line so that the data may be forwarded using the power line. The second power line communication device may be configured to demodulate a PLC signal transmitted by the power line to obtain data, and forward the demodulated data to the terminal in a wireless manner or the like, so that a user device such as the terminal receives the data from the internet. Similarly, the system shown in fig. 1 may also implement data transmission from the terminal to the internet side.
The above power line communication device may be specifically a modem for power line communication or other types of power line communication, and the present application is not limited specifically.
At present, when data is transmitted by the first power line communication device and/or the second power line communication device as shown in fig. 1, the first power line communication device and/or the second power line communication device carries a data packet to be transmitted in a signal frame, modulates the signal into an OFDM symbol sequence, and further transmits the OFDM symbol sequence through the first frequency band signal and/or the second frequency band signal. Accordingly, after receiving the OFDM symbol sequence transmitted by the first frequency band signal and/or the second frequency band signal in the power line, the receiving-end power line communication device may obtain a signal frame through demodulation, and further may parse the data packet according to the signal frame.
Before further describing embodiments, some terms are explained. The terms "first," "second," "third," "fourth," and the like in the description and claims of this application and in the above-described drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged where appropriate. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are not intended to be limited to a "only" inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the current power line communication, in terms of protocol design, according to the channel characteristics of a power line, an Alternating Current (AC) cycle of 2 power lines is used as a Medium Access Control (MAC) cycle of protocol communication. As shown in fig. 2, 1 MAC cycle includes at least two parts of time periods, one part is used to transmit a MAP frame and the other part is used to transmit data, and the part of time period for transmitting data is called transmission opportunity (TXOP). The TXOP is of two types, namely, a free preemption transmit opportunity (CFTXOP) and a shared transmit opportunity (STXOP). The CFTXOP is a transmission time period for contention access of the power line communication device, and the STXOP is a transmission time period uniformly allocated by the master node.
Generally, each powerline communication device in a powerline network area (e.g., a network under a gateway) is peer-to-peer in view of network distribution and may be referred to as a node. There is one domain master node (DM) among all nodes in one area, and non-DM nodes may be referred to as normal nodes. A domain master node allocates a transmission Time Slot (TS) to each power line communication device in the domain through a Medium Access Plan (MAP) frame; thus, in each MAC cycle, all nodes (including the domain master and the normal nodes) receive and transmit data in their own time slots. It should be noted that the domain master node and the common node are divided according to the processing function of each node in actual operation, and they may be the same or different in hardware or software structure. Generally, the role of a node does not change, but changes at different times, for example, a node that assumes the role of the domain master node in one time period acts as a normal node in another time period, and another normal node assumes the role of the domain master node. Fig. 3 shows a related art MAP frame structure. One MAP frame includes a MAP header field (MAP header) and at least one transmission opportunity description information (TXOP descriptor) field. The MAP header field is mainly used to describe information of a next MAC cycle, wherein the next MAC cycle generally refers to one MAC cycle after the MAC cycle in which the MAP frame is transmitted. For the STXOP in the next MAC cycle, multiple TXOP descriptor fields are needed to indicate the order in which each node occupies the STXOP, but for the CFTXOP, since each node competes for preemption and does not need to indicate the order of occupation, only one TXOP descriptor field is needed to describe. Additionally, the MAP frame may further include an extension field (extension) for indicating information of the TXOP slot, such as a start time, an end time, and the like.
In the prior art, the time slot allocation of the STXOP is calculated by a Data Bandwidth Allocation (DBA) module of the domain master node, and then the sequence information of the time slot allocation is uniformly sent to each common node through a MAP frame. For STXOP, how many nodes are in the region, how many transmission opportunity description information fields must be in a MAP frame to indicate the order in which the nodes occupy the STXOP. Since the length of the MAC cycle is fixed, if there are more nodes in the domain, the length of the MAP frame is longer, so that there are fewer transmission occasions actually allocated to each node for transmitting data in one MAC cycle.
The embodiment of the invention provides a transmission resource allocation method, which can reduce the length of time slot indication information in an MAC period and increase the length of transmission opportunity for transmitting data, thereby improving the efficiency of transmitting service information by each node in each MAC period.
As shown in fig. 4, the transmission resource allocation method includes:
step S403, parameter information of the domain master node and any common node, and parameter information of the domain master node and any common node are interacted with other common nodes; the method specifically comprises the following steps: the domain master node broadcasts and sends parameter information of the domain master node, and receives the parameter information sent by a common node; any common node also broadcasts and sends the parameter information of the node, and receives the parameter information sent by other nodes; the parameter information may indicate at least an identity of a node that sent the parameter information and a value of the parameter.
In this document, any common node in the domain refers to any node which is successfully registered in the power line network area where the domain master node is located, except the domain master node; all ordinary nodes refer to all ordinary nodes within the domain. In addition, all nodes in the domain hereinafter include the domain master node and all ordinary nodes in the domain, and any node refers to any one of all nodes in the domain.
As an example, the parameter information includes three fields respectively representing a node identification, a parameter type and a parameter value; as another example, the parameter information includes identification node and parameter value, but does not include a parameter type indication field, and instead, the parameter value is distinguished by a fixed bit position where the parameter value is located, for example, a value represented by a first few bits of an appointment corresponds to one parameter type, and a value represented by a second few bits of the appointment corresponds to another parameter type. And the domain master node and all the common nodes store the parameter information obtained respectively to form a corresponding relation table for identifying the node identification, the parameter type and the parameter value.
Therefore, any node can acquire the parameter information of all nodes in the domain, and each node can store the parameter information corresponding to all the nodes. For the sake of simplicity, the parameter information of all nodes in the domain is referred to as a parameter information set, and the form may be as shown in table 1,
table 1
| Node identification | Type of parameter | |
| Node | ||
| 1 | Parameter A | aa |
| Node 2 | Parameter B | bb |
| Node 3 | Parameter C | cc |
The parameter information includes one or more of a bit loading table (short for B table), a Forward Error Correction (FEC) error rate, a retransmission rate, a maximum kp value/average kp value of a channel estimation window (where the kp value is a total number of bits that can be carried by one OFDM symbol), an average transmission rate, and an average reception rate.
Step S405, the domain master node broadcasts and sends strategy indication information to all common nodes in the domain, and the strategy indication information at least indicates a parameter category and a calculation mode for calculating the time slot sequence;
the calculation mode can be a weighted proportional fair sorting algorithm, a polling sorting algorithm, a greedy algorithm for sorting according to the channel quality from good to bad, or other sorting algorithms.
Step S407, the common node selects corresponding parameters in the interactive information according to the parameter types indicated in the policy indication information, and calculates the sequence of time slots occupied by all nodes by using the selected corresponding parameters; and the domain master node also calculates the sequence of the time slots occupied by all the nodes according to the selected corresponding parameters and the calculation mode.
Since each node has already obtained the same parameter information set in step S403, the parameters of all nodes are selected according to the parameter types indicated in the policy indication information, and then the parameters are calculated according to the calculation method indicated in the policy indication information, so as to obtain the sequence of the time slots occupied by all nodes in the whole domain, and thus obtain whether the node occupies the time slot to send data after the first node or the nodes.
And step S409, the domain master node or the common node occupies the time slot according to the calculated sequence to send data.
Because each node stores the parameter information of all nodes in the domain, the parameter information acquired by each node is consistent, and the time slot sequence of each node acquired by the nodes according to the same parameters and calculation mode is also consistent, the nodes transmit data in the corresponding time slot sequence according to the acquired time slot sequence without conflict.
It should be understood that selecting different parameter categories or different calculation modes may affect different time slot sequences calculated by each node; in other words, the domain master node may broadcast and send different policy indication information to all the common nodes at different times according to the demand or other policies to allocate different time slot orders. As a specific example, assume that there are three nodes within a domain: the node 1 is used as a domain master node and can broadcast and send policy indication information 1 to two common nodes in one period, as shown in a table 2, the policy indication information carries an indication of a parameter type A and a calculation method A, and the three nodes can calculate that the time slot occupation sequence is '123' according to the parameter of the type A and the calculation method A. According to the calculation result, the node 1 preempts the STXOP time slot to send data; after the node 1 finishes sending, the node 2 then occupies the STXOP time slot to send data; after the node 2 finishes sending, the node 3 continues to occupy the STXOP time slot to send data. Similarly, the node 1 as a domain master node may broadcast the transmission policy indication information 2 to two general nodes at another time period. The strategy indication information carries the indication of a parameter type B and a calculation method B, and the three nodes can calculate that the time slot occupation sequence is '132' according to the parameter of the type A and the calculation method A; according to the calculation result, the node 1 preempts the STXOP time slot to send data; after the node 1 finishes sending, the node 3 then occupies the STXOP time slot to send data; after the node 3 finishes transmitting, the node 2 continues to occupy the STXOP time slot to transmit data. Similarly, the node 1, as a domain master node, may also broadcast and send policy indication information 3 to two common nodes in another period, where the policy indication information carries an indication of a parameter class C and a calculation method C, and the three nodes can calculate that the time slot occupation sequence is "321" according to the parameter of the class a and the calculation method a, and the three nodes occupy the time slot according to the sequence "321" to send data.
Table 2
| Policy indication information numbering | Policy-indicating information carrying content | Time slot sequence calculated by each node |
| |
Parameter type A + calculation method A | 123 |
| Policy indication information 2 | Parameter type B + calculation method B | 132 |
| Policy indication information 3 | Parameter type C + calculation method C | 321 |
As an optional implementation manner, before step S403 or after step S403, the following step S401 is further included,
step S401, the domain master node broadcasts and sends a node list message to all common nodes in the domain, wherein the node list message comprises the domain master node and a node identification set of all common nodes in the domain; the node identification set includes information, such as a device identification code (ID) or a MAC address, that uniquely identifies each node in the domain.
Thus, after step S403, each node can check whether parameter information of all nodes is collected according to the received node list message. If the information of a certain node K is lacked, a broadcast transmission message can be used for instructing the node K to retransmit the parameter information of the node K.
Optionally, the method in this embodiment further includes that when an ordinary node registered in the domain leaves the domain, or when a new ordinary node is successfully registered in the domain, the domain master node updates the locally stored node list in the domain, and broadcasts and sends the updated node list to all ordinary nodes in the domain.
By using the embodiment of the invention, the description of an STXOP in the MAP frame does not need to carry information indicating the time slot sequence of each node, but only carries strategy indication information, thereby reducing the length of the MAP frame, correspondingly reducing the length of the MAC period occupied by the MAP frame, increasing the length of the transmission time for transmitting data in the MAC period, and further improving the efficiency of each node for transmitting service information in each MAC period. If the number of nodes in the domain is more, the reduction proportion of the length of the MAP frame is larger, and the efficiency of transmitting the service information by each node in each MAC period is improved more obviously. Further, if the time slot sequence of the STXOP is not changed in some future cycles, the MAP frame may not be repeatedly sent until the time sequence of each node needs to be adjusted, and then the MAP frame is sent, so as to further reduce the length of the MAC cycle occupied by the MAP and improve the efficiency of each node in transmitting the service information in each MAC cycle.
As a specific example, if there are 3 nodes and there are 4 STXOPs in one MAC cycle, 96 bytes are required for a TXOP descriptor field describing slot information of the 3 nodes in one MAP frame (old MAP frame for short) in the prior art, each TXOP descriptor has 3 TXOP extensions (each occupying 1 byte), and only 48 bytes are required for policy indication information carried in the last MAP frame (new MAP frame for short) to which the embodiment of the present invention is applied (that is, only one TXOP descriptor + one TXOP extension is required), which reduces 48 bytes. While the length of the old MAP frame is about 123 bytes, wherein the frame header occupies 22 bytes, and the auxiliary information occupies at least 5 bytes, the embodiment of the present invention reduces the length of the old MAP frame by 48 bytes, i.e. by 39%. Assuming that 1ms is required for sending the old MAP frame, it only needs about 0.61ms for sending each MAP frame in the embodiment of the present invention, and 0.39ms more time slots for transmitting data can be allocated to each node in each MAC cycle.
In the embodiments provided by the present application, the method flows provided by the embodiments of the present application are introduced from the perspective of the functions respectively implemented by the domain master node and the common node. In order to implement the functions in the method provided by the embodiment of the present application, the slave domain master node and the common node may respectively include a hardware structure and/or a software module, and implement the functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. In the slave domain master node and the common node, some of the above functions may be implemented in a hardware structure, a software module, or a hardware structure plus a software module, depending on the specific application and design constraints of the technical solution.
As shown in fig. 5, a power line communication apparatus 500 provided in an embodiment of the present application may include a transceiver 501, a processor 502, and a memory 503, where the transceiver 501, the processor 502, and the memory 503 are coupled to each other. The transceiver 501 may be used to support the power line communication apparatus 500 for communication, for example, to receive and/or transmit data frames through a communication medium such as a power line; the processor 501 may be used to process communication protocols and communication data, as well as to control the transceiver 501 and the memory 503, read data of the memory 503, execute software programs, process data of the software programs, and so on. The memory 502 may be used to store instructions (or programs) and data.
The processor 502 is configured to execute computer instructions, which in cooperation with the transceiver 501 and the memory 503, make the power line communication apparatus 500 operable to perform the steps performed by the domain master in the above method embodiments. The method specifically comprises the following steps:
the transceiver 501 may be configured to broadcast and send parameter information of itself to all common nodes, receive and store the parameter information sent by the common nodes; the parameter information at least indicates the identification of the node sending the parameter information and the value of the parameter; the memory 503 is configured to store the obtained parameter information, and form a corresponding relationship table identifying a node identifier, a parameter type, and a parameter value;
the transceiver 501 is configured to broadcast and send policy indication information to all common nodes in a domain, where the policy indication information at least indicates a parameter type and a calculation method for calculating a time slot sequence;
the processor 502 is configured to calculate a sequence of time slots occupied by the power line communication apparatus according to the parameter type and the calculation manner in the policy indication information;
the transceiver 501 is configured to transmit data in the calculated sequence occupying time slots.
As an alternative embodiment, the transceiver 501 is configured to broadcast a node list message to all common nodes in a domain, where the node list message includes a node identification set of a domain master node and all common nodes in the domain; the processor 502 is further configured to check whether parameter information of all nodes is collected according to the node list message.
In one possible design, the parameter information includes one or more of a B table, an FEC error rate, a retransmission rate, a maximum kp value/average kp value of a channel estimation window, an average transmission rate, and an average reception rate.
In another possible design, the calculation method may be a weighted proportional fair sorting algorithm, a round robin sorting algorithm, a greedy algorithm sorting according to channel quality from good to bad, or other sorting algorithms.
The transceiver 501, the processor 502 and the memory 503 are all used for processing PLC signals, so the power line communication apparatus 500 may further include a filter for filtering out signals other than PLC signals, extracting PLC signals, and sending the extracted PLC signals to the transceiver 501.
It should be noted that the power line communication apparatus 500 in this embodiment plays a role as a domain master node to execute the steps of the method embodiment corresponding to fig. 4, and the detailed description thereof also applies to the actions executed by the transceiver 501, the processor 502 and the memory 503 system in this embodiment, and is not described herein again.
It is to be understood that the above processor 501 and memory 502 may constitute a communication chip. In addition, the chip is coupled to the communication interface 503 to further implement the functions of the above communication apparatus 500.
As shown in fig. 6, a power line communication apparatus 600 provided in an embodiment of the present application may include a transceiver 601, a processor 602, and a memory 603, where the transceiver 601, the processor 602, and the memory 603 are coupled to each other. The transceiver 601 may be used to support the power line communication apparatus 600 to perform communication, for example, to receive and/or transmit data frames through a communication medium such as a power line; the processor 601 may be used to process communication protocols and communication data, as well as to control the transceiver 601 and the memory 603, to read data from the memory 603, to execute software programs, to process data of software programs, and so forth. The memory 602 may be used to store instructions (or programs) and data.
The processor 602 is configured to execute computer instructions, and in cooperation with the transceiver 601 and the memory 603, the power line communication apparatus 500 is configured to perform the steps performed by the common node in the above method embodiments. The method specifically comprises the following steps:
the transceiver 601 is configured to receive parameter information sent by the domain master node and other common nodes; the parameter information at least can indicate the identification of the node sending the parameter information and the value of the parameter; the memory 603 is configured to store the obtained parameter information, and form a correspondence table identifying node identifiers, parameter types, and parameter values.
The transceiver 601 is configured to receive policy indication information sent by the domain master node, where the policy indication information at least indicates a parameter type and a calculation mode for calculating a time slot sequence;
the processor 602 calculates the sequence of time slots occupied by the power line communication device according to the parameter type and the calculation method in the policy indication information;
the transceiver 601 occupies the time slots in the calculated order to transmit data.
As an optional embodiment, the transceiver 601 is further configured to receive a node list message sent by the domain master node, where the node list message includes a node identifier set of the domain master node and all common nodes in the domain; the processor 602 is further configured to check whether parameter information of all nodes is collected according to the node list message.
In one possible design, the parameter information includes one or more of a B table, an FEC error rate, a retransmission rate, a maximum kp value/average kp value of a channel estimation window, an average transmission rate, and an average reception rate.
In another possible design, the calculation method may be a weighted proportional fair sorting algorithm, a round robin sorting algorithm, a greedy algorithm sorting according to channel quality from good to bad, or other sorting algorithms.
The transceiver 601, the processor 602 and the memory 603 are all configured to process the PLC signal, so that the power line communication apparatus 600 may further include a filter configured to filter out signals other than the PLC signal, extract the PLC signal, and send the PLC signal to the transceiver 601.
It should be noted that the power line communication apparatus 600 in this embodiment plays a role as a common node to execute the steps of the method embodiment corresponding to fig. 4, and the detailed description thereof also applies to the actions executed by the transceiver 601, the processor 602, and the memory 603 in this embodiment, and is not described herein again.
It is understood that the above processor 601 and memory 602 may constitute a communication chip. In addition, the chip is coupled to the communication interface 603 to further implement the functions of the above communication apparatus 600. Based on the same concept as the method embodiments, embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program causes the computer to perform the method performed by the transmitting end and/or the receiving end in any one of the possible implementations of the method embodiments and the method embodiments.
Based on the same concept as the method embodiments, the present application further provides a computer program product, which, when being invoked by a computer, enables the computer to implement the method performed by the transmitting end and/or the receiving end in any one of the possible implementation manners of the method embodiments and the method embodiments.
Based on the same concept as the method embodiments described above, the present application also provides a chip or a chip system, which may include a processor. The chip may further include or be coupled with a memory (or a storage module) and/or a communication interface (or a communication module), where the communication interface (or the communication module) may be used to support the chip to perform wired and/or wireless communication, and the memory (or the storage module) may be used to store a program, and the processor may be used to call the program to implement the method performed by the transmitting end and/or the receiving end in any one of the possible implementations of the method embodiment and the method embodiment described above. The chip system may include the above chip, and may also include the above chip and other discrete devices, such as a memory (or a storage module) and/or a communication interface (or a communication module).
Based on the same concept as the method embodiment, the present application also provides a communication system, which may include the power line communication apparatus in the corresponding embodiments of fig. 5 and 6 above. The communication system may be adapted to implement the method described above in any one of the possible implementations of the method embodiments. Illustratively, the communication system may have a structure as shown in fig. 1. The domain master node may be a first power line communication device in the power line communication system shown in fig. 1, and the general node may be a second power line communication device in the power line communication system shown in fig. 1. Alternatively, the domain master node may be a second power line communication device in the power line communication system shown in fig. 1, and the general node may be a first power line communication device in the power line communication system shown in fig. 1.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, and computer program products according to embodiments. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
Claims (22)
1. A power line communication method, comprising:
the domain master node broadcasts and sends the parameter information of the domain master node, receives and stores the parameter information sent by the common node; the parameter information at least can indicate the identification of the node sending the parameter information and the value of the parameter;
the domain master node broadcasts and sends strategy indicating information to all common nodes in the domain, wherein the strategy indicating information at least indicates a parameter category and a calculation mode for calculating a time slot sequence;
the domain master node calculates the sequence of time slots occupied by all nodes in the domain according to the parameter type and the calculation mode in the strategy indication information;
and the domain master node occupies own time slot according to the calculated sequence to send data.
2. The method of claim 1, wherein the parameter information comprises three fields for identifying a node identification, a parameter type, and a parameter value, respectively.
3. The method of claim 1, wherein the parameter information comprises two fields for respectively identifying a node identifier and a parameter value, and wherein a fixed bit position of the parameter value identifies which parameter type the parameter value corresponds to.
4. The method according to any one of claims 1 to 3, wherein the parameter information comprises one or more of a bit loading table, a forward error correction error rate, a retransmission rate, a maximum kp value/average kp value of a channel estimation window, an average transmission rate, and an average reception rate.
5. The method according to any one of claims 1 to 3, wherein the calculation means comprises a weighted proportional fair sorting algorithm, a round robin sorting algorithm, a greedy algorithm sorting according to channel quality from good to bad.
6. The method of claim 1, further comprising:
the domain master node broadcasts and sends a node list message to all common nodes in the domain, wherein the node list message comprises the domain master node and a node identification set of all common nodes in the domain; the node identification set comprises information which can uniquely identify each node in the domain;
the domain master checks whether parameter information of all nodes is collected according to the node list message.
7. The method of claim 6, wherein when a normal node registered in a domain leaves the domain or a new normal node is successfully registered in the domain, the domain master node updates a locally stored intra-domain node list and broadcasts a node list message including the updated node list to all normal nodes in the domain.
8. A power line communication method, comprising:
the first node receives and stores the parameter information sent by the domain main node and other common nodes; the parameter information at least can indicate the identification of the node sending the parameter information and the value of the parameter;
the first node receives strategy indication information sent by the domain master node, wherein the strategy indication information at least indicates a parameter category and a calculation mode for calculating a time slot sequence;
the first node calculates the sequence of time slots occupied by all nodes in the domain according to the parameter type and the calculation mode in the strategy indication information;
and the first node occupies the time slot of the first node according to the calculated sequence to send data.
9. The method of claim 8, wherein the parameter information comprises three fields for identifying a node identification, a parameter type, and a parameter value, respectively.
10. The method of claim 8, wherein the parameter information comprises two fields for respectively identifying a node identifier and a parameter value, and wherein a fixed bit position of the parameter value identifies which parameter type the parameter value corresponds to.
11. The method according to any one of claims 8 to 10, wherein the parameter information comprises one or more of a bit loading table, a forward error correction error rate, a retransmission rate, a maximum kp value/average kp value of a channel estimation window, an average transmission rate, and an average reception rate.
12. The method of any of claims 8 to 10, wherein the computing means comprises a weighted proportional fair ordering algorithm, a round robin ordering algorithm, a greedy algorithm ordering good to bad according to channel quality.
13. The method of claim 8, further comprising:
the first node receives a node list message sent by the domain master node, wherein the node list message comprises the domain master node and a node identification set of all common nodes in the domain; the all common nodes comprise the first node and other common nodes in the domain;
the first node checks whether parameter information of all nodes is collected according to the node list message.
14. A power line communication apparatus, characterized in that the power line communication apparatus is a domain master node, comprising a transceiver (501), a processor (502) and a memory (503), wherein:
the transceiver (501) is used for broadcasting and sending parameter information of the transceiver to all the common nodes, receiving and storing the parameter information sent by the common nodes; the parameter information at least can indicate the identification of the node sending the parameter information and the value of the parameter;
the memory (503) is used for storing the obtained parameter information and forming a corresponding relation table of the node identification, the parameter type and the parameter value;
the transceiver (501) is used for broadcasting and sending strategy indication information to all common nodes in a domain, wherein the strategy indication information at least indicates a parameter category and a calculation mode for calculating a time slot sequence;
the processor (502) is used for calculating the sequence of time slots occupied by all nodes in a domain according to the parameter types and the calculation modes in the strategy indication information;
the transceiver (501) is further configured to transmit data occupying time slots belonging to the domain master in the calculated order.
15. The apparatus of claim 14, wherein the parameter information comprises one or more of a bit loading table, a forward error correction error rate, a retransmission rate, a maximum kp value/average kp value of a channel estimation window, an average transmission rate, and an average reception rate.
16. The apparatus of claim 14 or 15, wherein the calculation means comprises a weighted proportional fair sorting algorithm, a round robin sorting algorithm, and a greedy algorithm for sorting the channel quality from good to bad.
17. The apparatus according to claim 14, wherein said transceiver (501) is configured to broadcast a send node list message to all common nodes within a domain, said node list message comprising a set of node identifications of said domain master node and all common nodes within a domain; the processor (502) is further configured to verify whether parameter information for all nodes is collected based on the node list message.
18. A power line communication apparatus, characterized in that the power line communication apparatus is a common node, comprising a transceiver (601), a processor (602) and a memory (603), wherein:
the transceiver (601) is used for receiving parameter information sent by the domain master node and other common nodes; the parameter information at least can indicate the identification of the node sending the parameter information and the value of the parameter;
the memory (603) is used for storing the obtained parameter information and forming a corresponding relation table of the node identification, the parameter type and the parameter value;
the transceiver (601) is configured to receive policy indication information sent by the domain master node, where the policy indication information indicates at least one parameter type and a calculation mode for calculating a time slot sequence;
the processor (602) calculates the sequence of time slots occupied by all nodes in the domain according to the parameter types and the calculation modes in the strategy indication information;
the transceiver (601) transmits data occupying time slots belonging to the power line communication apparatus in the calculated order.
19. The apparatus of claim 18, wherein the parameter information comprises one or more of a bit loading table, a forward error correction error rate, a retransmission rate, a maximum kp value/average kp value of a channel estimation window, an average transmission rate, and an average reception rate.
20. The apparatus of claim 18 or 19, wherein the calculation means comprises a weighted proportional fair ordering algorithm, a round robin ordering algorithm, a greedy algorithm ordering from good to bad according to channel quality.
21. The apparatus according to claim 18, wherein said transceiver (601) is further configured to receive a node list message sent by said domain master node, said node list message comprising a set of node identifications of the domain master node and all common nodes within a domain; the processor (602) is further configured to verify whether parameter information for all nodes is collected based on the node list message.
22. A power line communication system comprising a domain master node and at least one generic node, wherein the domain master node is an apparatus as claimed in any one of claims 14 to 17 and the generic node is an apparatus as claimed in any one of claims 18 to 21.
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| CN202010857981.7A CN114095059B (en) | 2020-08-24 | 2020-08-24 | Power line communication method, device and system |
| PCT/CN2021/098351 WO2022041914A1 (en) | 2020-08-24 | 2021-06-04 | Power line communication method, device, and system |
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| CN202010857981.7A CN114095059B (en) | 2020-08-24 | 2020-08-24 | Power line communication method, device and system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101107788A (en) * | 2005-10-12 | 2008-01-16 | 松下电器产业株式会社 | Method and apparatus for power line communication |
| CN101779409A (en) * | 2007-10-31 | 2010-07-14 | 高通股份有限公司 | Multiplexing and transmission of multiple data streams in a wireless multi-carrier communication system |
| CN107046494A (en) * | 2016-11-15 | 2017-08-15 | 贵州电网有限责任公司电力科学研究院 | The division methods of time slot in a kind of power information acquisition system based on power line communication |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050063422A1 (en) * | 2003-09-19 | 2005-03-24 | Sashi Lazar | Communication protocol over power line communication networks |
| CN103686862B (en) * | 2012-09-07 | 2016-12-28 | 电信科学技术研究院 | A kind of method and apparatus applying for time interval resource |
| US9762496B2 (en) * | 2014-02-25 | 2017-09-12 | Qualcomm Incorporated | Slotted message access protocol for powerline communication networks |
| US9503189B2 (en) * | 2014-10-10 | 2016-11-22 | At&T Intellectual Property I, L.P. | Method and apparatus for arranging communication sessions in a communication system |
| MX361841B (en) * | 2014-10-30 | 2018-12-18 | Astrolink Int Llc | System and methods for assigning slots and resolving slot conflicts in an electrical distribution grid. |
| CN106034035A (en) * | 2015-03-19 | 2016-10-19 | 上海东软载波微电子有限公司 | Broadcast communication method and device of power line communication (PLC) network |
| CN106506043B (en) * | 2016-11-04 | 2019-07-05 | 重庆邮电大学 | Data transmission method, control device and equipment in a kind of PLC system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101107788A (en) * | 2005-10-12 | 2008-01-16 | 松下电器产业株式会社 | Method and apparatus for power line communication |
| CN101779409A (en) * | 2007-10-31 | 2010-07-14 | 高通股份有限公司 | Multiplexing and transmission of multiple data streams in a wireless multi-carrier communication system |
| CN107046494A (en) * | 2016-11-15 | 2017-08-15 | 贵州电网有限责任公司电力科学研究院 | The division methods of time slot in a kind of power information acquisition system based on power line communication |
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