CN114095589A - Coexistence processing method and system for multiple communication systems of Internet of things chip - Google Patents
Coexistence processing method and system for multiple communication systems of Internet of things chip Download PDFInfo
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- 238000003672 processing method Methods 0.000 title claims abstract description 13
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- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000003993 interaction Effects 0.000 claims description 4
- 230000000977 initiatory effect Effects 0.000 claims description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/18—Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]
- H04W80/045—Network layer protocols, e.g. mobile IP [Internet Protocol] involving different protocol versions, e.g. MIPv4 and MIPv6
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/08—Upper layer protocols
- H04W80/085—Upper layer protocols involving different upper layer protocol versions, e.g. LCS - SUPL or WSN-SOA-WSDP
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a coexistence processing method and a coexistence processing system for various communication systems of an Internet of things chip, which coordinate coexistence between different communication protocols by using a simple coexistence processing system running on a hardware driving layer. The coexistence processing system is respectively connected with the hardware driving layer of the high-priority communication protocol and the hardware driving layer of the low-priority communication protocol, can receive messages sent by the hardware driving layer of the high-priority communication protocol, and controls the opening and the termination of the hardware driving layer of the low-priority communication protocol. Based on the scheme of the invention, the physical layer and the upper layer of each communication protocol do not need to process coexistence among multiple communication protocols, the terminal application software can call two or more than two communication systems simultaneously, the use states of various communication systems do not need to be inquired, the development of software application is facilitated, and the software development period is obviously shortened. The invention reduces the interference among various communication protocols and effectively improves the energy utilization rate and the communication rate of the chip of the Internet of things.
Description
Technical Field
The invention belongs to the technical field of Internet of things, and particularly relates to a simple coexistence method for multiple communication systems of an Internet of things chip.
Background
Narrowband cellular internet of things (NB-IoT) is one of the important supporting technologies for the outdoor application of the Internet of things. It is compatible with existing 4G cellular networks (LTE) to meet low-rate, low-cost, low-power applications. By means of the 4G cellular network, the outdoor coverage rate of the narrowband cellular Internet of things is high. When the indoor application of thing networking, wiFi, low power consumption Bluetooth (BLE) or zigBee are comparatively popularized. Because the cost is low, the network can be directly formed among a plurality of terminals, and the indoor application rate is high. In outdoor scenarios, due to the lack of infrastructure, these communication protocols are limited in signal propagation distance and have a lower application rate than narrowband cellular internet of things.
Because the thing networking device is with the demand of indoor and outdoor coverage simultaneously, for example motion bracelet, wearable equipment etc. because it possesses the mobility, often need use simultaneously under indoor and outdoor scene, consequently, how to let different communication protocol coexist in same thing networking device is an important problem that awaits the solution urgently.
The traditional internet of things equipment can integrate a plurality of communication chips, and each communication chip supports one or more communication protocols. Each communication protocol can be basically abstracted into a multi-layer structure as shown in fig. 1: the hardware driving layer 101 is responsible for calling the communication hardware of the bottom layer and opening a data path; the physical layer 102 is responsible for modulation, demodulation, coding and decoding of signals to correct errors in the process of receiving and transmitting signals; the protocol layer 103 is responsible for coordinating communications between different network terminals and infrastructure; the application layer 104 abstracts the various interfaces to the top-level development software calls. When multiple communication chips or different communication protocols within the same chip are simultaneously called, interference signals may be generated between different communication technologies, thereby affecting communication quality. The conventional approach is to avoid interfering signals by time-sharing calls 105 by the upper layer application software. This approach can increase the difficulty of developing the terminal application software. The terminal application software needs to query the use states of various communication systems in real time, so that the software overhead is relatively high. The interference signal caused by the failed inquiry can also reduce the communication rate which can be achieved by each communication protocol, and the energy consumption is wasted.
Disclosure of Invention
In order to solve the above problems, the present invention discloses a coexistence processing method and system for multiple communication systems of an internet of things chip, in the internet of things chip integrating multiple communication protocols, a simple coexistence processing system operating in a hardware driver layer is used to coordinate coexistence between different communication protocols.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a coexistence processing method for multiple communication systems of an Internet of things chip is disclosed, wherein all communication protocols are sorted according to priority; the hardware driving layer of the communication protocol with relatively high priority sends a message to the coexistence processing system; a hardware driving layer of a relatively low-priority communication protocol passively accepts the enabling of the bottom hardware of the control of the coexistence processing system; the method specifically comprises the following steps:
301, preparing a relatively high priority communication protocol to initiate a connection using hardware;
step 305, initiating a connection to transmit data by a relatively high priority communication protocol;
308, the communication protocol with relatively high priority sends a message to the coexistence processing system;
and 311, restoring the connection to transmit data according to the communication protocol with the relatively low priority, and completing the data interaction.
Further, when the relatively low-priority communication protocol bottom layer communication hardware is terminated, the data packet loss is processed according to the protocol definition of the relatively low-priority communication protocol bottom layer communication hardware, and the state of a coexistence processing system or other communication protocols does not need to be known.
Furthermore, different communication protocols are concurrently called by adopting terminal upper layer application software.
Further, when a message sent by a plurality of communication protocols requires communication, the coexistence processing system enables the protocol with the highest priority to be used and controls the enablement of all other relatively lower protocols.
The invention also provides a coexistence processing system for various communication systems of the chip of the Internet of things, which is respectively connected with the hardware driving layer of the relatively high-priority communication protocol and the hardware driving layer of the relatively low-priority communication protocol, can receive the message sent by the hardware driving layer of the relatively high-priority communication protocol and control the opening and the termination of the hardware driving layer of the relatively low-priority communication protocol; suspending hardware usage of a relatively low priority communication protocol by sending a message to the coexistence processing system when the relatively high priority communication protocol requires communication; when the communication of the relatively high priority communication protocol is completed, the hardware usage right of the relatively low priority communication protocol is restored by sending a message to the coexistence processing system.
Further, the coexistence processing system is integrated in an internet of things chip, and is an independent hardware module in the chip or a driving software implemented in a hardware driving layer.
Further, each communication protocol is implemented in different hardware modules independent from each other or share the same hardware module.
The invention has the beneficial effects that:
1. the invention provides a coexistence processing method and an implementation system of multiple communication protocols implemented on a hardware driving layer. Based on the scheme of the invention, for each communication protocol, the physical layer and the layers above do not need to process coexistence among a plurality of communication protocols, the terminal application software can call two or more than two communication systems simultaneously without inquiring the use states of the various communication systems, the development of software application is convenient, and the software development period is obviously shortened.
2. The invention reduces the interference caused among various communication protocols through the coexistence processing system and the coexistence processing method, and effectively improves the energy utilization rate and the communication rate of the chip of the Internet of things.
Drawings
Fig. 1 is a diagram illustrating coexistence of multiple communication protocols in a conventional method.
FIG. 2 is a diagram illustrating coexistence of multiple communication protocols according to the present invention.
Fig. 3 is a flowchart of a coexistence processing method for multiple communication systems of the internet of things according to the present invention.
Fig. 4 shows various implementations of the coexistence processing system for various communication systems of the internet of things according to the present invention.
Detailed Description
The technical solutions provided by the present invention will be described in detail below with reference to specific examples, and it should be understood that the following specific embodiments are only illustrative of the present invention and are not intended to limit the scope of the present invention. The connection in the present invention includes various ways capable of forming communication connection, including but not limited to a wired way and various wireless communication ways, in which connection is realized by using communication lines, electric wires, and the like.
The coexistence processing method for multiple communication systems of the internet of things is realized based on the architecture shown in fig. 2. The figure shows a multi-layer structure of two different communication protocols, a coexistence system is bridged between hardware driving layers (202, 203) of the two protocols. Different communication protocols may be invoked concurrently by the terminal upper layer application 207. Some internet of things chips have been implemented to integrate multiple communication protocols, such as WiFi, bluetooth low energy, and Zigbee, with a single chip. This provides the possibility to address coexistence between multiple protocols at the hardware driver layer.
As shown in fig. 3, the coexistence processing system supports a simple coexistence processing protocol, which is implemented as shown in fig. 3, and all communication protocols are prioritized (the user can decide the priority, or the overhead of each communication protocol when processing the packet loss logic). Relatively high priority communication protocols include, but are not limited to, narrowband cellular internet of things (NB-IoT), WiFi. Low priority communication protocols include, but are not limited to, WiFi, Bluetooth Low energy, ZigBee. The hardware driver layer of the relatively high priority communication protocol may send a message to the co-existing processing system; the hardware driver layer of the relatively low priority communication protocol passively accepts the coexistence processing system to control the enabling of the underlying hardware, and the relatively low priority communication protocol does not know at the physical layer and above that the underlying hardware is suspended. The communication protocol with relatively low priority processes the abnormal signal packet loss according to the normal protocol flow. The priority is relative, such as narrowband internet of things > WiFi > bluetooth low energy may be set arbitrarily. When the narrowband internet of things and the WiFi need to be used together, the WiFi is stopped as a relatively low priority communication protocol by the coexistence processing system. When WiFi and bluetooth low energy are required to be used together, WiFi becomes a relatively high priority communication protocol and bluetooth low energy is stopped as a relatively low priority communication protocol by the coexistence processing system. When the number of the communication protocols exceeds two, the coexistence processing system may receive the message request sent by the plurality of communication protocols at the same time to perform communication, and at this time, the system may comprehensively determine to use the protocol with the highest priority and terminate all other relatively low protocols. Based on the above protocol, the coexistence processing method for multiple communication systems of the internet of things provided by the present invention includes the following steps (it should be noted that, in the following steps, the high priority and the low priority are both relatively high and low):
step 301, when the high priority communication protocol needs to use bottom layer hardware, that is, when the hardware is ready to be used to initiate connection;
305, initiating connection transmission data by a high-priority communication protocol;
in step 306, the low priority communication system fails to transmit data and the protocol layer cannot receive the data packet. The low priority communication protocol handles data packet loss (such as retransmission or connection re-initiation after a period of time) according to its protocol definition without knowing the state of the coexistence processing system or other communication protocols. The steps are not necessarily time-ordered with respect to step 305.
at step 310, low priority communication underlay communication hardware may be turned on;
in step 311, the low-priority communication protocol resumes the connection and transmits data, completing the data interaction, but the previous interruption may cause a certain data interaction delay.
Based on the above method, the high priority communication protocol suspends or resumes the hardware usage right of the low priority communication protocol by sending a message to the coexistence processing system. The low-priority communication protocol processes the exception through the signal packet loss of the self protocol, and the high-priority communication protocol recovers the hardware use right of the low-priority communication protocol through the coexistence processing system after completing the communication, so that various communication protocols can be invoked by the upper-layer application software concurrently.
The implementation of the coexistence processing system includes, but is not limited to, a simple hardware module integrated within the internet of things chip or a driver software implemented in a hardware driver layer. Specifically, the coexistence system may be an independent functional hardware module in the internet of things chip, as shown by 401 in fig. 4(a) and 402 in fig. 4(b), or may be embedded in the software kernel of the original internet of things chip in the form of software, as shown by 403 in fig. 4(c) and 404 in fig. 4 (d). At this time, the coexistence processing system becomes a driver software that can be called to access the underlying hardware module. No matter the coexisting processing system adopts a hardware or software implementation mode, the coexisting processing system is respectively connected with the hardware driving layers of the high-priority communication protocol and the low-priority communication protocol, receives the information sent by the high-priority communication protocol and the low-priority communication protocol, and controls the opening and the termination of the bottom layer communication hardware of the relatively low-priority communication protocol. The coexistence processing system needs to process only simple logic to control the enabling operations of the underlying hardware. This completely ignores the increase in the overall chip area. The high priority communication protocol may be integrated with the low priority communication protocol in the same hardware module, as shown in fig. 4(b), 4(d), in which case the co-existing processing system is connected to the hardware driver layer of the high priority communication protocol and the low priority communication protocol within the shared communication hardware. When the high-priority communication protocol and the low-priority communication protocol share one hardware driving layer, the high-priority communication protocol obtains the control right of the hardware driving layer through the coexistence processing system when transmitting data, so that the data conforming to the high-priority communication protocol is transmitted preferentially. It is also possible to integrate a high priority communication protocol in one communication hardware and a low priority communication protocol in another communication hardware, as shown in fig. 4(a) and 4(c), in which case the coexistence processing system is connected to the hardware driver layer in the high priority communication hardware and the hardware driver layer in the low priority communication hardware, respectively. Fig. 4 shows several possible examples for convenience of illustration only, since the priorities of the communication protocols are relative, and there are no absolute high and low scores in most cases, so when there are more than two communication protocols coexisting, one of ordinary skill in the art can arbitrarily combine the hardware of the communication protocols as needed, the communication hardware can be one, two or more, and the protocols integrated in the hardware can be one or more according to actual cost and implementation difficulty. The coexistence processing system is connected with the hardware driving layer of each communication protocol and can receive the information sent by each communication protocol.
It should be noted that the above-mentioned contents only illustrate the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and it is obvious to those skilled in the art that several modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations fall within the protection scope of the claims of the present invention.
Claims (7)
1. A coexistence processing method for multiple communication systems of an Internet of things chip is characterized in that all communication protocols are sorted according to priority; the hardware driving layer of the communication protocol with relatively high priority sends a message to the coexistence processing system; a hardware driving layer of a relatively low-priority communication protocol passively accepts the enabling of the bottom hardware of the control of the coexistence processing system; the method specifically comprises the following steps:
301, preparing a relatively high priority communication protocol to initiate a connection using hardware;
step 302, the hardware driving layer of the communication protocol with relatively high priority sends a message to the coexistence processing system;
step 303, the coexistence processing system terminates the usage right of part or all hardware links of the bottom hardware of the relatively low-priority communication system;
step 304, the relatively low priority communication system bottom layer communication hardware is terminated, and the data link is blocked;
step 305, initiating a connection to transmit data by a relatively high priority communication protocol;
step 306, the data transmission of the communication system with relatively low priority fails, and the protocol layer cannot receive the data packet;
step 307, finishing communication by a communication protocol with relatively high priority, and terminating connection and finishing data transmission;
308, the communication protocol with relatively high priority sends a message to the coexistence processing system;
step 309, the coexistence processing system resumes the enabling right of the low relative priority communication protocol to the bottom layer hardware;
step 310, the relatively low priority communication bottom layer communication hardware can be started;
and 311, restoring the connection to transmit data according to the communication protocol with the relatively low priority, and completing the data interaction.
2. The method as claimed in claim 1, wherein when the communication hardware of the relatively low priority communication protocol is terminated, the data packet loss is processed according to the protocol definition thereof, without knowing the status of the coexistence processing system or other communication protocols.
3. The coexistence processing method for multiple communication systems of an internet of things chip according to claim 1, characterized in that different communication protocols are concurrently invoked by terminal upper layer application software.
4. The coexistence processing method for multiple communication systems of an internet of things chip according to claim 1, wherein when messages sent by multiple communication protocols require communication, the coexistence processing system enables the protocol with the highest priority to be used to control the enablement of all other relatively lower protocols.
5. A coexistence processing system for multiple communication systems of an Internet of things chip is characterized in that the coexistence processing system is respectively connected with a hardware driving layer of a relatively high priority communication protocol and a hardware driving layer of a low priority communication protocol, can receive messages sent by the hardware driving layer of the relatively high priority communication protocol and controls the opening and the termination of the hardware driving layer of the relatively low priority communication protocol; suspending hardware usage of a low relative priority communication protocol by sending a message to the coexistence processing system when the relatively high priority communication protocol requires communication; when the communication of the relatively high priority communication protocol is completed, the hardware usage right of the relatively low priority communication protocol is restored by sending a message to the coexistence processing system.
6. The coexistence processing system for multiple communication systems of internet of things chip according to claim 4, wherein the coexistence processing system is integrated into the internet of things chip, and is an independent hardware module in the chip or is a driver software implemented in a hardware driver layer.
7. The coexistence processing system for multiple communication systems of internet of things chip according to claim 4, wherein each communication protocol is implemented in different hardware modules independent of each other or sharing the same hardware module.
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