CN106358276B - Communication means based on ID packet - Google Patents

Abstract

The invention relates to a communication method based on an ID packet. The master and the slave are in a dormant mode when data packets are not being transmitted, and the method includes that the dormant master receives an external command and is woken up; the master sends an ID packet to the slave; After the slave receives the ID packet, it returns an ID response packet to the master; both the ID packet and the ID response packet contain the synchronization word and the receiver’s identification; the master and the slave transmit data packets; the master and the slave enter into the sleep mode. In the above-mentioned communication method based on ID packets, the master and slave are in sleep mode when data packets are not being transmitted, which can save power consumption; and before data packets are exchanged, the master and slave first synchronize through ID packets to establish temporary communication channel, the ID packet only includes the synchronization word and the receiver identification, which can further reduce power consumption; in addition, when the master has data to be transmitted, it will conduct temporary networking with the slave, which also reduces the power consumption of the master and slave.

Description

Communication method based on ID packet

technical field

The invention relates to the field of wireless communication, in particular to a communication method based on ID packets.

Background technique

At present, with the rise of the Internet of Things, short-distance wireless communication technologies play an important role in the Internet of Vehicles, smart homes, wireless sensor networks, and remote-controlled toys; short-distance wireless communication protocols are basically WiFi, Zigbee, and Bluetooth technologies. However, among the above three short-distance wireless communication technologies, due to the earlier appearance, under the comprehensive consideration of power consumption, transmission distance, networking and cost, there are the following shortcomings when applied to the Internet of Things:

WiFi technology: Bear the brunt of the power consumption problem, making it impossible to use in applications with small-capacity batteries (such as button batteries); and in terms of cost and protocol complexity, it is difficult to further develop the Internet of Things.

Zigbee technology: Although the networking capability is strong, the protocol is complex and requires additional routing for relay, making it difficult to reduce the cost and apply to the increasingly miniaturized and simplified Internet of Things.

Bluetooth technology: The transmission distance is a limitation of it, which cannot meet the needs of long-distance transmission of the Internet of Things.

Contents of the invention

Based on this, it is necessary to provide a communication method based on ID packets, which has low power consumption, strong networking capability and wide application range.

A kind of communication method based on ID packet, master and slave are in sleep mode when not carrying out data packet transmission, described method comprises the following steps:

The host in sleep mode receives an external command and is woken up;

The host sends an ID packet to the slave;

After the slave machine receives the ID packet, it returns an ID response packet to the master; the ID packet and the ID response packet both include a synchronization word and a receiver identification;

The host performs data packet transmission with the slave;

The master and the slave enter a sleep mode after the transmission of the data packet ends.

In the above-mentioned communication method based on ID packets, the host and the slave are in sleep mode when not transmitting data packets, which can save power consumption; and further, before the host and the slave exchange data packets, they first synchronize through ID packets to establish Temporary communication channel, the ID packet only includes the synchronization word and the receiver identification, which can further reduce power consumption; in addition, when the master has data to be transmitted, it only conducts temporary networking with the slave, which also reduces the power of the master and slave. consumption.

In one of the embodiments, it also includes the step: the slave in sleep mode wakes up periodically to detect whether the ID packet arrives, and when the arrival of the ID packet is not detected, returns to sleep mode, when the ID packet is detected When the ID packet arrives, execute the step of returning an ID response packet to the master after receiving the ID packet from the slave. In this embodiment, when the slave is in sleep mode, it wakes up periodically to detect whether an ID packet arrives, so that the host can form a network through the ID package, and improve the networking capability.

In one embodiment, the sending period of the ID packet is shorter than the duration of detecting whether the ID packet arrives after each periodic wake-up of the slave. In this embodiment, by setting the sending period of the ID packet to be less than the time for detecting whether the ID packet arrives after each periodic wake-up of the slave, it can be ensured that when the master sends an ID packet to the slave, the slave wakes up from the dormant mode Finally, it will inevitably receive an ID packet, so as to establish temporary communication with the host, which reduces power consumption and improves the networking capability.

In one of the embodiments, the communication method is applied in a network including one slave and at least two masters. In this embodiment, the master performs data packet transmission with the slave respectively in a preemptive manner, thereby ensuring that under a multi-master network, the slave communicates with the master in an approximate time-division multiplexing manner, which improves the networking efficiency. ability.

In one of the embodiments, the step of receiving an external command and waking up the host in sleep mode is specifically:

at least two of said hosts in sleep mode receive external commands and are woken up;

The step in which the host sends an ID packet to the slave is specifically:

Both of the at least two masters send ID packets to the slave;

After the slave receives the ID packet, the step of returning an ID response packet to the host is specifically:

The slave receives the ID packet sent by one of the masters, and returns an ID response packet to the master, and the slave no longer receives the ID packets sent by other masters before completing the data packet transmission with the master;

The steps of the master and the slave entering the dormant mode after the data packet transmission is finished, specifically:

The slave and the master that has just transmitted data packets with the slave enter sleep mode, and the slave wakes up periodically in sleep mode to continue to receive ID packets sent by other masters until it needs to communicate with the slave. The host for the data packet transmission completes the data packet transmission with the slave.

In one of the embodiments, the communication method is applied in a network including a master and at least two slaves. In this embodiment, the master performs data packet transmission with the slave respectively in a time-division multiplexing manner, thereby ensuring that under a network with one master and multiple slaves, the master and slave still maintain the above-mentioned temporary networking mode without increasing additional power consumption.

In one of the embodiments, the step of receiving an external command and waking up the host in sleep mode is specifically:

The host in sleep mode receives an external command and is woken up, and the external command is an command for data packet transmission with at least two slaves;

The step in which the host sends an ID packet to the slave is specifically:

The host sends a first ID packet to the first slave;

After the slave receives the ID packet, the step of returning an ID response packet to the host is specifically:

After the first slave receives the first ID packet, it returns a first ID response packet to the master;

The steps of the master and the slave entering the dormant mode after the data packet transmission is finished, specifically:

The first slave enters a dormant mode after the transmission of the data packet is completed;

The master continues to send the second ID packet to the second slave until all the slaves that need to transmit data packets with the master complete the data packet transmission with the master, and the master and all the slaves enter sleep mode.

In one of the embodiments, the data packet transmission rate between the master and the slave is 8 kbps-1 Mbps. In this embodiment, the transmission distance can be increased by reducing the code rate of the host and the slave to 8kbps-1Mbps, and the application range is wider.

In one of the embodiments, the sleep mode is that the host or the slave suspends the running data to the hard disk, or the sleep mode is that the host or the slave saves the running data in memory.

In one of the embodiments, the step of transmitting data packets between the host and the slave refers to exchanging data packets between the host and the slave at fixed intervals.

Description of drawings

Fig. 1 is the flowchart of the communication method based on ID bag in an embodiment;

Fig. 2 is the schematic diagram that the communication method based on ID packet shown in Fig. 1 is applied in the network of a slave multi-master;

Fig. 3 is the flow chart that the communication method based on ID packet shown in Fig. 2 is applied in the network of a multi-master from one;

Fig. 4 is the schematic diagram that the communication method based on ID packet shown in Fig. 1 is applied in the network of one master and many slaves;

FIG. 5 is a flowchart of the application of the ID packet-based communication method shown in FIG. 4 in a network with one master and multiple slaves.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Before describing the embodiments according to the present invention in detail, it should be noted that the described embodiments mainly lie in the combination of steps and system components related to the ID packet-based communication method. Accordingly, pertinent system components and method steps have been indicated at appropriate places in the drawings by conventional symbols, and only details relevant to the understanding of the embodiments of the present invention have been shown so as not to cause confusion to those who would benefit from the present invention. Details that would be apparent to one of ordinary skill in the art obscure the present disclosure.

In this text, relational terms such as left and right, up and down, front and back, first and second are used merely to distinguish one entity or action from another without necessarily requiring or implying such Any actual such relationship or sequence between entities or actions. The terms "comprising", "comprising" or any other variant are intended to cover a non-exclusive inclusion whereby a process, method, article or apparatus comprising a set of elements includes not only those elements but also other elements not expressly listed elements, or elements inherent in such a process, method, article, or apparatus.

The term "hibernation mode" may mean that the master or slave suspends running data to the hard disk, or the term "hibernation mode" may mean that the master or slave keeps running data in memory.

Please refer to shown in Fig. 1, Fig. 1 is the flow chart of the communication method based on ID packet in an embodiment, in this embodiment, master and slave are in dormant mode when not carrying out data packet transmission, can save like this master and power consumption of the slave, to increase the working hours of the master and the slave, the method may include the following steps:

S102: The host in sleep mode receives an external command and wakes up. For example, when the master and the slave are required to perform data packet transmission, a data packet transmission instruction can be sent to the master, such as the instruction shown in Figure 1, so that the master can wake up from the sleep mode.

S104: the master sends an ID packet to the slave. When the master is awakened, it sends ID packets to the slave at a certain period until the slave returns an ID response packet. At this time, both the master and the slave are awakened, and a communication channel has been established for data packet transmission. In one of the embodiments, if the slave has not returned an ID response packet, an error may be reported.

S106: After receiving the ID packet, the slave returns an ID response packet to the master. In this embodiment, the ID packet and the ID response packet all only contain the synchronization word and the recipient identification, which can further reduce power consumption, and in this embodiment, the ID packet and the ID response packet are only used for the master and the slave The synchronization is no longer used for other purposes. The exchange of other information between the master and the slave is carried out during the data packet transmission, thereby reducing the power consumption of the networking process.

S108: The host and the slave transmit data packets. In one embodiment, the data packet transmission between the master and the slave means that the master and the slave exchange data packets at fixed intervals.

S110: the host and the slave enter into a dormant mode after the data packet transmission ends.

In the above-mentioned communication method based on ID packets, the host and the slave are in sleep mode when not transmitting data packets, which can save power consumption; and further, before the host and the slave exchange data packets, they first synchronize through ID packets to establish Temporary communication channel, the ID packet only includes the synchronization word and the receiver identification, which can further reduce power consumption; in addition, when the master has data to be transmitted, it only conducts temporary networking with the slave, which also reduces the power of the master and slave. consumption.

In one of the embodiments, please refer to FIG. 2 and FIG. 4. FIG. 2 is a schematic diagram of the ID packet-based communication method shown in FIG. 1 applied in a one-slave multi-master network. FIG. A schematic diagram of the application of the ID packet-based communication method in a master-multiple-slave network. In the above embodiments, the slave wakes up periodically when it is in sleep mode to detect whether an ID packet arrives, for example, at the place marked "waiting to receive ID packet" in Figure 2 and Figure 4, when the slave does not detect the arrival of the ID packet When the ID packet is detected, the slave will return an ID response packet to the master after receiving the ID packet, that is, step S106, so that a communication channel can be established between the master and the slave , to transmit data packets.

In the above embodiments, the slave wakes up periodically when it is in sleep mode to detect whether an ID packet arrives, so that the master can form a network through the ID package, and improve the networking capability.

In one of the embodiments, the sending cycle of the ID packet is shorter than the duration of detecting whether the ID packet arrives after each periodic wake-up of the slave, thereby ensuring that when the master sends an ID packet to the slave, the slave wakes up from the sleep mode Finally, it will inevitably receive an ID packet, so as to establish temporary communication with the host, which reduces power consumption and improves the networking capability.

In one embodiment, as shown in FIG. 2 , the above communication method can be applied to a network including one slave and at least two masters. When at least two masters need to transmit data packets with the slave, the master performs data packet transmission with the slave in a preemptive manner.

Specifically, please refer to Fig. 3, Fig. 3 is a flowchart of the application of the ID packet-based communication method shown in Fig. 2 in a multi-master network. The computer performs data packet transmission, including the following steps:

S302: At least two hosts in sleep mode receive external commands and wake up. In this embodiment, taking what is shown in FIG. 2 as an example, there are two masters, master 1 and master 2, that need to perform data packet transmission with the slave.

S304: Both the at least two masters send ID packets to the slaves.

S306: The slave will receive the ID packet sent by one of the masters, and return an ID response packet to the master, and when the slave receives the ID packet sent by one of the masters, before completing the data packet transmission with the master, the slave The host no longer receives ID packets sent by other hosts. This embodiment can be understood in this way, that is, the master communicates with the slave in a preemptive manner. As long as the master corresponds to the first ID packet received by the slave, the slave will first transmit data packets with the master, and the During this period, the slave does not exchange ID packets or transmit data packets with other masters. It can be understood that the slave is locked until the data packet transmission between the slave and the master is completed, and the lock of the slave is released. Only hosts can exchange ID packets and transmit data packets with other hosts.

S308: The host and the slave transmit data packets.

S310: the slave and the host that has just transmitted data packets with the slave enter a dormant mode.

S312: The slave wakes up periodically in sleep mode to continue receiving ID packets sent by other masters, until the masters that need to transmit data packets with the slave complete the data packet transmission with the slave.

For example, both host 1 and host 2 shown in Figure 2 need to transmit data packets with the slave. At this time, host 2 sends an ID packet to the slave before host 1, and the slave receives the ID packet sent by host 2 first. Then the slave first returns the ID response packet to the host 2, and establishes a communication channel with the host 2 for data packet transmission, and after the data packet transmission between the host 2 and the slave is completed, both the host 2 and the slave enter the sleep mode again to save power consumption. As shown in Figure 2, when the slave machine enters the sleep mode, it still wakes up periodically to detect whether an ID packet arrives. When the slave machine wakes up again, it can receive the ID packet sent by the master 1. At this time, the slave machine Then return the corresponding ID response packet to the host 1, so that the communication channel between the host 1 and the slave is established for data packet transmission, and after the data packet transmission between the host 1 and the slave is completed, the host 1 and the slave enter the sleep mode again, to save power consumption.

Please refer to FIG. 2 again for further detailed description of the operations of the master and slave in this embodiment. First, the master and the slave are in a dormant state when they are not transmitting data packets, and the slave wakes up periodically to detect whether an ID packet arrives in the dormant state. If not, the slave enters the dormant state again to save power. consumption.

Second, when the master has a data packet to transmit, the master sends an ID packet to the slave, so that the master and the slave wake up periodically to detect whether there is time synchronization for the arrival of the ID packet. In this step, the ID packet is used instead of Data packet communication can further reduce power consumption.

Third, after receiving the ID packet, the slave returns a corresponding ID response packet to the master to notify the master that the communication channel is established and the networking is successful.

Fourth, after the communication channel between the master and the slave is established, the master and the slave perform data packet transmission at fixed intervals.

Fifth, after the data packet transmission of the master and the slave is completed, the master and the slave enter the sleep mode again to reduce power consumption.

In the above-mentioned embodiment, it can be further referred to as shown in FIG. 2. When there are multiple masters that need to transmit data packets with the slaves, the establishment of the temporary network is based on competition, that is, preemption, and the slaves are first The master of the ID packet exchange first performs data packet transmission with the slave, so that the master and the slave maintain the above-mentioned temporary communication mode for temporary communication. For example, in Figure 2, when the master 2 first exchanges the ID packet with the slave, Host 1 is still in the mode of sending ID packets, but not sending data packets, so it will not increase power consumption, and host 2 will enter sleep mode after the data packet transmission with the slave is completed, and will not increase power consumption, so use Figure 2 The networking method shown in will not increase power consumption due to networking.

Please refer to FIG. 4, the above communication method can also be applied in a network including a master and at least two slaves. When the host needs to transmit data packets with at least two slaves, the host performs data packet transmission with the slaves in a time-division multiplexed manner.

Specifically, please refer to Fig. 5, Fig. 5 is a flowchart of the application of the ID packet-based communication method shown in Fig. 4 in a master-multiple-slave network. In this embodiment, the master uses time division multiplexing Carry out packet transmission with slave, the method in the embodiment shown in Figure 1 is applied in this embodiment, can specifically comprise the following steps:

S502: The host in sleep mode receives an external command and is woken up, the external command is an command to transmit data packets with at least two of the slaves. That is, a master needs to transmit data packets with multiple slaves.

S504: The host sends a first ID packet to the first slave.

S506: After receiving the first ID packet, the first slave returns a first ID response packet to the master.

S508: The first slave and the host perform data packet communication.

S510: The first slave enters a sleep mode after the transmission of the data packet ends.

S512: The master continues to send the second ID packet to the second slave until all the slaves that need to transmit data packets with the master complete the data packet transmission with the master, the master and all the slaves machine enters sleep mode.

For example, as shown in Figure 4, when the host needs to transmit data packets with slave 1 and slave 2, the host first sets the network parameters of slave 1, and starts to establish temporary communication with slave 1, that is, sends a message to slave 1. ID packet, after the slave 1 returns the ID response packet to the master, the master and slave 1 establish a communication channel, the master and slave 1 perform data packet transmission, when the master and slave 1 data packet transmission is completed, slave 1 Enter sleep mode again to save power consumption, the master sets the network parameters of the slave 2, and starts to establish temporary communication with the slave 2, that is, sends an ID packet to the slave 2, and waits for the slave 2 to return a corresponding ID response packet to the master Finally, the master and slave 2 establish a communication channel, and the master and slave 2 perform data packet transmission. When the master and slave 2 data packet transmission is completed, the master and slave 2 enter sleep mode again to save power consumption. In the above-mentioned embodiment, the master slave is under multiple networks (because there are multiple slave machines), so the master needs to switch between these networks in a time-sharing manner for communication.

Please refer to FIG. 4 again for further detailed description of the operations of the master and slave in this embodiment. First, the master and the slave are in a dormant state when they are not transmitting data packets, and the slave wakes up periodically to detect whether an ID packet arrives in the dormant state. If not, the slave enters the dormant state again to save power. consumption.

Second, when the host has data packets that need to be transmitted with slave 1 and slave 2, the host first sets the network parameters of slave 1, and starts to establish a temporary communication channel with slave 1 for data packet transmission.

Thirdly, after the data packet transmission between the master and the slave 1 is completed, the slave 1 enters the dormant state again. The master then sets the network parameters of the slave 2, and starts to establish a temporary communication channel with the slave 2 for data packet transmission.

Fourth, after the data packet transmission between the host and the slave 2 is completed, the host and the slave 2 enter into a dormant state again to save power consumption.

In the above embodiment, as shown in Figure 4, when there are multiple slaves that need to transmit data packets with the master, the establishment of the temporary network is based on time division multiplexing, and because each network The parameters are assigned by the slave, so the master exists in multiple networks, so the master needs to switch communication under these networks in a time-sharing manner, and because both the master and the slave maintain the above-mentioned temporary communication mode for temporary communication, for example, Fig. In 4, when the host and slave 1 perform ID packet transmission and data packet transmission, slave 2 is still in sleep mode, and when the data packet transmission between the master and slave 1 is completed, slave 1 enters sleep mode, so the The networking method shown in 4 does not increase power consumption due to networking.

In one embodiment, the data packet transmission rate between the master and the slave is 8kbps-1Mbps. By reducing the code rate of the master and the slave to 8kbps-1Mbps, the transmission distance can be increased and the application range is wider.

And under the crossover network of "one master and multiple slaves" and "one slave and multiple masters", switching the network through time division multiplexing can realize two structures of scatternet and piconet, so as to meet the optimal networking requirements, and after From the above analysis, it can be found that under the above-mentioned cross network, the power consumption does not increase due to the increase of devices. Therefore, the above-mentioned communication method based on ID packets firstly solves the problem of continuous connection status of wireless communication in the traditional technology, so that the host and The slave can stay in sleep mode for more time, effectively reducing power consumption, and through temporary networking, it is convenient to meet the networking requirements of scatternet and piconet, and ensure that the power consumption is not affected by the host and With the increase of slave machines, the application range is wider.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (7)

1. a kind of communication means based on ID packet, which is characterized in that host and slave are in when not carrying out data packet transmission and stop Sleep mode the described method comprises the following steps:

When host needs to transmit there are data, the host in suspend mode receives external command and is waken up；

The host sends ID packet according to predetermined period to the slave, and it is each that the sending cycle of the ID packet is less than the slave The duration that the ID packet reaches is detected whether after periodic wakeup；

After the slave receives the ID packet, Xiang Suoshu host one ID response bag of return so that the slave is waken up, and with master Machine establishes communication channel；The ID packet and the ID response bag are only identified comprising synchronization character and recipient, the host and institute The exchange for stating other information of slave carries out in transmission of data packets；

The host and the slave carry out data packet transmission；

The host and the slave enter suspend mode after the data packet end of transmission；

The communication means is applied in the network comprising a slave and at least two hosts, and the host is in a manner of seizing Data packet transmission is carried out with slave；

Or the communication means is applied in the network comprising a host and at least two slaves, the host is multiple with the time-division Mode and the slave carry out data packet transmission.

2. the communication means according to claim 1 based on ID packet, which is characterized in that further comprise the steps of: in suspend mode mould The slave of formula periodically wakes up to have detected whether that the ID packet reaches, and when not detecting that the ID packet reaches, returns Suspend mode is returned, when having detected that the ID packet reaches, after executing the slave reception ID packet, Xiang Suoshu host is returned The step of one ID response bag.

3. the communication means according to claim 1 based on ID packet, which is characterized in that

The step of host in suspend mode receives external command and is waken up, specifically:

At least two hosts in suspend mode receive external command and are waken up；

The step of host sends ID packet to the slave, specifically:

At least two host sends ID packet to the slave；

After the slave receives the ID packet, the step of Xiang Suoshu host one ID response bag of return, specifically:

The slave receives the ID packet that one of host is sent, and to the host one ID response bag of return, the slave with The host no longer receives the ID packet that other hosts are sent before completing data packet transmission；

The step of host and the slave enter suspend mode after the data packet end of transmission, specifically:

The slave and the host that data packet transmission has just been carried out with the slave enter suspend mode, and the slave is in suspend mode Periodical wakes up to continue to the ID packet of other hosts transmission, until needing to carry out the institute of data packet transmission with the slave It states host and completes data packet transmission with the slave.

4. the communication means according to claim 1 based on ID packet, which is characterized in that

The step of host in suspend mode receives external command and is waken up, specifically:

The host in suspend mode receives external command and is simultaneously waken up, the external command be with described at least two from The instruction of machine progress data packet transmission；

The step of host sends ID packet to the slave, specifically:

The host sends the first ID packet to the first slave；

After the slave receives the ID packet, the step of Xiang Suoshu host one ID response bag of return, specifically:

After first slave receives the first ID packet, Xiang Suoshu host returns to the first ID response bag；

The step of host and the slave enter suspend mode after the data packet end of transmission, specifically:

First slave enters suspend mode after the data packet end of transmission；

The host continues to send the 2nd ID packet to the second slave, until institute's in need and host progress data packet transmission After slave completes data packet transmission with the host, the host and all slaves enter suspend mode.

5. the communication means according to claim 1 based on ID packet, which is characterized in that the host and the slave carry out The code rate of data packet transmission is 8kbps~1Mbps.

6. the communication means according to claim 1 based on ID packet, which is characterized in that the suspend mode is the host Or the data being currently running are suspended to hard disk to the slave or the suspend mode is that the host or the slave will just Memory is stored in the data of operation.

7. the communication means according to claim 1 based on ID packet, which is characterized in that the host and the slave carry out The step of data packet is transmitted refers to that the host and the slave carry out packet-switching with fixed intervals.